U.S. patent application number 15/139264 was filed with the patent office on 2016-08-18 for uplink signal sending method and user equipment.
The applicant listed for this patent is ZTE CORPORATION. Invention is credited to Bo DAI, Zhirong LIN, Lu REN, Shuqiang XIA.
Application Number | 20160242121 15/139264 |
Document ID | / |
Family ID | 48798578 |
Filed Date | 2016-08-18 |
United States Patent
Application |
20160242121 |
Kind Code |
A1 |
LIN; Zhirong ; et
al. |
August 18, 2016 |
Uplink Signal Sending Method and User Equipment
Abstract
An uplink signal power reduction method applied to a carrier
aggregation system, comprises: an UE being configured with multiple
timing advances, when symbols in uplink channels carried on
different carriers are not aligned in the time domain and symbols
on different carriers are overlapped in the time domain, if a sum
of the transmission power of each uplink channel of said UE is
determined to be bigger than a maximum transmission power
configured for said UE, then an eNB instructing said UE to reduce a
transmission power of said uplink channels in which symbols are
overlapped in the time domain on different carriers.
Inventors: |
LIN; Zhirong; (Shenzhen,
CN) ; DAI; Bo; (Shenzhen, CN) ; REN; Lu;
(Shenzhen, CN) ; XIA; Shuqiang; (Shenzhen,
CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
ZTE CORPORATION |
Shenzhen City |
|
CN |
|
|
Family ID: |
48798578 |
Appl. No.: |
15/139264 |
Filed: |
April 26, 2016 |
Related U.S. Patent Documents
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
|
|
14372993 |
Jul 17, 2014 |
|
|
|
PCT/CN2012/085724 |
Dec 3, 2012 |
|
|
|
15139264 |
|
|
|
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H04W 56/0045 20130101;
H04W 72/0453 20130101; H04W 56/0005 20130101; Y02D 70/1264
20180101; Y02D 70/00 20180101; H04W 52/0209 20130101; H04W 52/146
20130101; H04L 5/0053 20130101; Y02D 30/70 20200801; Y02D 70/1262
20180101; H04L 5/001 20130101 |
International
Class: |
H04W 52/14 20060101
H04W052/14; H04W 52/02 20060101 H04W052/02 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 20, 2012 |
CN |
201210018906.7 |
Jan 21, 2012 |
CN |
201210019827.8 |
Claims
1. An uplink signal power reduction method in a carrier aggregation
system, comprising: an UE being configured with multiple timing
advances, when symbols in uplink channels carried on different
carriers are not aligned in the time domain and symbols on
different carriers are overlapped in the time domain, if a sum of
the transmission power of each uplink channel of said UE is
determined to be bigger than a maximum transmission power
configured for said UE, then an eNB instructing said UE to reduce a
transmission power of said uplink channels in which symbols are
overlapped in the time domain on different carriers; wherein, said
eNB instructing said UE through a physical layer signaling or a
high layer signaling to reduce the transmission power of said
uplink channels in which symbols are overlapped in the time domain
on different carriers.
2. The method of claim 1, wherein, said eNB instructing said UE of
predefined rules for power reduction; according to said predefined
rule instructed by said eNB, said UE reducing said transmission
power of said uplink channels in which symbols are overlapped in
the time domain on different carriers; wherein, said predefined
rules comprises: reducing said transmission power of said uplink
channels on each uplink carrier by a same ratio, until the
transmission power of said UE does not exceed the maximum
transmission power configured for said UE; or, according to a low
to high order of priorities of said uplink channels reducing power
of each uplink channel, until the transmission power of said UE
does not exceed said maximum transmission power configured by said
UE; or, only reducing the transmission power of said symbols that
are overlapped on said different channels; wherein, priorities of
the uplink channels are determined according to one or a
combination of multiple of the following methods: prioritizing in
accordance with the channel types, and their priorities from high
to low being: PUCCH, PUSCH; prioritizing in accordance with
carriers carrying said uplink channels, and their priorities from
high to low being: PCell, SCell; if said uplink channels in which
symbols are overlapped in the time domain are multiple PUSCHs, in
accordance with whether the UCI is carried to prioritize, their
priorities from high to low being: PUSCHs carrying the UCI, PUSCHs
not carrying the UCI; prioritizing in accordance with the subframe
indexes, and their priorities from high to low being: uplink
channels in a former subframe, and uplink channels in a latter
subframe; prioritizing in accordance with the subframe indexes, and
its priorities from high to low being: uplink channels in said
latter subframe, uplink channels in said former subframe; if said
uplink channels in which the symbols are overlapped in the time
domain are multiple PUSCHs, prioritizing in accordance with whether
said PUSCH carries the retransmitted data or not, and its
priorities from high to low being: PUSCHs carrying newly
transmitted data, PUSCHs carrying retransmitted data.
3. The method of claim 1, wherein, said eNB instructing said UE of
at least one of said power reduction method and power reduction
objects; wherein, said power reduction method comprises: reducing
said transmission power of each uplink channel by the same ratio;
reducing power of each uplink channel according to a low to high
order of priorities of said uplink channels; said power reduction
objects comprising: all uplink channels; designated uplink
channels; wherein, priorities of the uplink channels are determined
according to one or a combination of multiple of the following
methods: prioritizing in accordance with the channel types, and
their priorities from high to low being: PUCCH, PUSCH; prioritizing
in accordance with carriers carrying said uplink channels, and
their priorities from high to low being: PCell, SCell; if said
uplink channels in which symbols are overlapped in the time domain
are multiple PUSCHs, in accordance with whether the UCI is carried
to prioritize, their priorities from high to low being: PUSCHs
carrying the UCI, PUSCHs not carrying the UCI; prioritizing in
accordance with the subframe indexes, and their priorities from
high to low being: uplink channels in a former subframe, and uplink
channels in a latter subframe; prioritizing in accordance with the
subframe indexes, and its priorities from high to low being: uplink
channels in said latter subframe, uplink channels in said former
subframe; if said uplink channels in which the symbols are
overlapped in the time domain are multiple PUSCHs, prioritizing in
accordance with whether said PUSCH carries the retransmitted data
or not, and its priorities from high to low being: PUSCHs carrying
newly transmitted data, PUSCHs carrying retransmitted data.
4. An uplink signal power reduction method in a carrier aggregation
system, comprising: an UE being configured with multiple timing
advances, when symbols in uplink channels carried on different
carriers are not aligned in the time domain and symbols on
different carriers are overlapped in the time domain, if it is
determined that a sum of transmission power of each uplink channel
of said UE exceeds a maximum transmission power configured for said
UE, then said UE reducing the transmission power of said uplink
channels in which symbols are overlapped on different carriers in
the time domain according to predefined rules; wherein, said
predefined rules comprises: reducing said transmission power of
said uplink channels on each uplink carrier by a same ratio, until
the transmission power of said UE does not exceed the maximum
transmission power configured by said UE; or, according to a low to
high order of priorities of said uplink channels, reducing the
power of each uplink channel, until the transmission power of said
UE does not exceed said maximum transmission power configured by
said UE; or, only reducing the transmission power of said symbols
that are overlapped on said different channels; or, wherein, said
UE judging whether a sum of the transmission power of each uplink
channel exceeds the maximum transmission power configured by said
UE or not according to one of the following methods: judging
whether the sum of the transmission power of the uplink channels
carried on each uplink channel in the current subframe exceeds the
maximum transmission power configured for said UE or not; or,
judging whether the sum of the transmission power of the uplink
channels carried on each uplink carrier in the current subframe and
the transmission power of the uplink channels carried in each
uplink carrier that are ready to be transmitted in the next
subframe exceeds the maximum transmission power configured for said
UE or not.
5. The method of claim 4, wherein, when only reducing the
transmission power of said symbols that are overlapped on said
different channels, equal-ratio reducing the transmission power of
said symbols that are overlapped; or, reducing the power of the
symbols that are overlapped in different channels according to a
low to high order of priorities of the uplink channels
corresponding to said symbols that are overlapped.
6. The method of claim 4, wherein, priorities of said uplink
channels are determined by one or a combination of multiple of the
following methods: prioritizing in accordance with channel types,
and their priorities from high to low being: PUCCH, PUSCH;
prioritizing in accordance with carriers carrying said uplink
channels, and their priorities from high to low being: PCell,
SCell; if said uplink channels in which symbols are overlapped in
the time domain are multiple PUSCHs, in accordance with whether the
UCI is carried to prioritize, their priorities from high to low
being: PUSCHs carrying the UCI, PUSCHs not carrying the UCI;
prioritizing in accordance with the subframe indexes, and their
priorities from high to low being: uplink channels in a former
subframe, and uplink channels in a latter subframe; prioritizing in
accordance with the subframe indexes, and its priorities from high
to low being: uplink channels in said latter subframe, uplink
channels in said former subframe; if said uplink channels in which
the symbols are overlapped in the time domain are multiple PUSCHs,
prioritizing in accordance with whether said PUSCH carries the
retransmitted data or not, and its priorities from high to low
being: PUSCHs carrying newly transmitted data, PUSCHs carrying
retransmitted data.
Description
TECHNICAL FIELD
[0001] The present document relates to the field of digital
communication, and more particularly, to 3GPP Long Term Evolution
and 3GPP Long Term Evolution Advanced (referred to as LTE-A), and
more particularly, to an uplink signal sending and power reduction
method and user equipment thereof.
BACKGROUND
[0002] Uplink physical channels in the Long Term Evolution
(referred to as LTE) system comprise: Physical Random Access
Channel (referred to as PARCH), Physical Uplink Shared Channel
(referred to as PUSCH), and Physical Uplink Control Channel
(referred to as PUCCH). Single-carrier OFDM (Orthogonal Frequency
Division Multiplexing) technique is used in the LTE uplink, and the
reference signal and data are multiplexed together in the manner of
TDM (Time Division Multiplexing). The uplink reference signal
comprises demodulation reference signal (referred to as DMRS) and
Sounding Reference Signal (referred to as SRS), wherein, said DMRS
comprises PUCCH demodulation reference signal and PUSCH
demodulation reference signal, which are respectively used for
different channel transmission. The main role of the DMRS is for
estimation of uplink channels and coherent detection and
demodulation of the evolved NodeB (referred to as eNB), and the
main role of the SRS is for measurement of uplink channels,
whereby, the eNB can perform frequency selective scheduling.
[0003] In the LTE (Long Term Evolution) system, in order to achieve
and maintain the uplink synchronization between user equipment
(referred to as UE) and the evolved NodeB, the evolved NodeB sends
Timing Advance (referred to as TA) to each user equipment according
to the transmission delay between itself and said user equipment,
the user equipment advances or retards its respective uplink
transmission timing according to the timing advance sent by the
evolved NodeB, so as to compensate for the transmission delay of
the user terminal to the evolved NodeB, so that uplink signals of
different user equipment can reach the evolved NodeB during the
evolved NodeB's receiving window.
[0004] The LTE-A (LTE Advanced) system is the next generation of
the LTE system, it introduces the concept of Carrier Aggregation.
The LTE system bandwidth of said carrier aggregation can be
regarded as component carrier frequency spectrum, and each
component carrier may also be called a serving cell, that is, one
frequency spectrum can be aggregated with a plurality of component
carriers (serving cells). One R10 UE resource consists of a
plurality of serving cells (component carrier) in the frequency
domain, and one cell therein is called the Primary cell (referred
to as PCell), and the remaining cells are called Secondary cells
(referred to as SCells).
[0005] After the introduction of carrier aggregation technology,
the user equipment can operate simultaneously on a plurality of
component carriers which may be continuous or discontinuous in the
frequency band and may also be within the same frequency band or
come from different frequency bands. In the case that the component
carriers are not continuous, or the component carriers come from
different frequency bands, since each component carrier has
different transmission characteristics, the timing advances of the
component carriers may be different from each other; even if the
component carriers belong to the same frequency band and are
continuous in the frequency band, if each component carrier comes
from different remote radio units (referred to as RRU), or in order
to increase the cell coverage, each component carrier is processed
respectively via different repeater, then the timing advance of
each component carrier may be different. In the LTE system, the UE
only operates on one carrier (which is one carrier in the time
division duplex mode, and one pair of uplink and downlink carriers
in the frequency division duplex mode, for convenience of
description, these two cases are herein referred to as a carrier),
and only needs to maintain the uplink synchronization of one
uplink, while in the carrier aggregation, the UEs can work
simultaneously on a plurality of component carriers, and the TAs of
these component carriers may be different, that is, there are
Multiple Timing Advances (referred to as MTA).
[0006] In the scenario of MTA, since the TAs of different uplink
component carriers may be different, it means that the signal
symbols sent on different uplink component carriers may not be
aligned in the time domain, and there may be possibility that the
signal symbols sent on different uplink component carriers may be
overlapped in the time domain.
[0007] In the LTE system, if the transmission power of the signal
symbols sent on different uplink component carriers exceeds the
maximum transmission power configured by the UE, it needs to reduce
the power of the uplink signals. Existing Rel-10 version of the LTE
protocol only defines the power reduction method for the case that
the uplink signals on multiple uplink carriers are in the same TA,
that is, the uplink signal symbols on each uplink carrier are
aligned in the time domain. This is specified as follows:
[0008] 1. When the uplink channels on multiple uplink carriers
configured by the UE comprise the PUCCH and the PUSCH, and said
PUSCH does not carry the uplink control information (referred to as
UCI), the UE does not reduce the transmission power of the PUCCH,
but equal-ratio reduces the transmission power of all the PUSCHs,
until the transmission power of the UE does not exceed the maximum
transmission power configured by the UE.
[0009] 2. When the uplink channels on multiple uplink carriers
configured by the UE are PUSCHs, some of which carry the UCI, the
UE does not reduce the transmission power of the PUSCHs carrying
the UCI, but equal-ratio reduces the transmission power of all the
PUSCHs not carrying the UCI, until the transmission power of the UE
does not exceed the maximum transmission power configured by said
UE.
[0010] 3. When the uplink channels on a plurality of uplink
carriers configured by the UE are PUSCHs, none of which carries the
UCI, the UE equal-ratio reduces the transmission power of all the
PUSCHs, until the transmission power of the UE does not exceed the
maximum transmission power configured by the UE.
[0011] 4. When the uplink channels on multiple uplink carriers
configured by the UE comprise PUCCHs and PUSCHs, and some of PUSCHs
carry the UCI, the UE does not reduce the power of the PUCCHs and
the PUSCHs carrying UCI, while equal-ratio reduces the transmission
power of the PUSCHs not carrying UCI, until the transmission power
of the UE does not exceed the maximum transmission power configured
by the UE.
[0012] 5. When the uplink signals on multiple uplink carriers
configured by the UE are SRS, the UE equal-ratio reduces the
transmission power of all the SRSs, until the transmission power of
the UE does not exceed the maximum transmission power configured by
the UE.
[0013] Combined with the above description, in the scenario of MTA,
if the transmission power of the overlapped symbols in the time
domain exceeds the maximum transmission power configured by the UE,
it needs to reduce the power of the uplink signals. But in the
current Rel-10 and earlier versions of the LTE protocol, there is
no definition of power reduction method for the case that, when the
transmission symbols are overlapped in the time domain, the
transmission power of the overlapped symbols exceeds the maximum
transmission power configured by the UE. Therefore, to ensure the
normal operation of the carrier aggregation system configured with
MTA, it requires to define a power reduction method in the scenario
of MTA, when the signal symbols sent on different uplink component
carriers overlap in the time domain, and the transmission power of
the overlapped symbols exceeds the maximum transmission power
configured by the UE.
SUMMARY
[0014] The main objective of the present document is to provide an
uplink signal sending method and a user equipment, to solve the
problem of signal transmission in the case that the signal symbols
sent on different uplink component carriers overlap in the time
domain in the scenario of MTA.
[0015] To solve the abovementioned problem, the present document
provides an uplink signal sending method which is applied to a
carrier aggregation system, comprising: after configuring more than
two timing advances, a user equipment (UE) sending uplink channels
and/or uplink signals in which symbols are to be overlapped in a
time domain on different carriers after rate-matching processing on
the uplink channels and/or uplink signals, or sending after
discarding said uplink channels and/or uplink signals, or
simultaneously sending said uplink channels and/or uplink signals
according to a signaling instruction sent from an evolved NodeB
(eNB) or predefined rules.
[0016] Accordingly, the present document also provides an user
equipment to be used in a carrier aggregation system,
comprising:
[0017] a receiving module, configured to receive more than two
timing advances configured by an evolved NodeB;
[0018] a sending module, configured to send after performing rate
matching for the uplink channels and/or uplink signals in which
symbols are overlapped in the time domain on different carriers, or
to send the uplink channels and/or uplink signals after discarding,
or simultaneously sending said uplink channels and/or uplink
signals.
[0019] An uplink signal power reduction method in a carrier
aggregation system,
[0020] an UE being configured with multiple timing advances, when
symbols in uplink channels carried on different carriers are not
aligned in the time domain and symbols on different carriers are
overlapped in the time domain, if a sum of the transmission power
of each uplink channel of said UE is determined to be bigger than a
maximum transmission power configured for said UE, then
[0021] an eNB instructing said UE to reduce a transmission power of
said uplink channels in which symbols are overlapped in the time
domain on different carriers.
[0022] An uplink signal power reduction method in a carrier
aggregation system,
[0023] an UE being configured with multiple timing advances, when
symbols in uplink channels carried on different carriers are not
aligned in the time domain and symbols on different carriers are
overlapped in the time domain, if it is determined that a sum of
transmission power of each uplink channel of said UE exceeds a
maximum transmission power configured for said UE, then
[0024] said UE reducing the transmission power of said uplink
channels in which symbols are overlapped on different carriers in
the time domain according to predefined rules.
[0025] An uplink signal power reduction apparatus in a carrier
aggregation system, and said apparatus comprises a transmission
power judgment unit and a power reduction instruction unit in said
evolved NodeB, and a power reduction execution unit in said UE,
wherein:
[0026] said transmission power judgment unit is configured to: when
said user equipment is configured with multiple timing advances,
and when it determines that the symbols in the uplink channels
carried on different carriers are not aligned in the time domain,
judge whether the symbols on different carriers are overlapped in
the time domain or not, if yes, then judge whether the sum of the
transmission power of each uplink channel of said UE exceeds the
maximum transmission power configured for said UE or not;
[0027] said power reduction instruction unit is configured to: if
said transmission power judgment unit determines that the sum of
the transmission power of each uplink channel of said UE exceeds
the maximum transmission power configured by said UE, instruct said
UE to reduce the transmission power of said uplink channels in
which symbols on different carriers are overlapped in the time
domain;
[0028] said power reduction execution unit is configured to:
according to an instruction from said evolved NodeB, reduce the
transmission power of said uplink channels in which symbols are
overlapped in the time domain on different carriers.
[0029] An uplink signal power reduction apparatus in a carrier
aggregation system, and said apparatus comprises a transmission
power judgment module and a transmission power reduction module in
an UE, wherein:
[0030] said transmission power judgment module is configured to:
said UE is configured with multiple timing advances, when symbols
in the uplink channels carried on different carriers are not
aligned in the time domain, and said symbols on different carriers
are overlapped in the time domain, judge whether the sum of the
transmission power of each uplink channel of the UE exceeds the
maximum transmission power configured by said UE or not;
[0031] said transmission power reduction module is configured to:
if said transmission power judgment module determines that the sum
of the transmission power of each uplink channel of said UE exceeds
the maximum transmission power configured by said UE, reduce the
transmission power of said uplink channels in which symbols are to
be overlapped in the time domain on different carriers according to
said predefined rule.
BRIEF DESCRIPTION OF THE DRAWINGS
[0032] FIG. 1 shows a flow chart of an uplink signal sending method
in accordance with an embodiment of the present document;
[0033] FIG. 2 shows a flow chart of another uplink signal sending
method in accordance with an embodiment of the present
document;
[0034] FIG. 3 is a schematic diagram of an uplink signal in
accordance with the application example 1-1 and the application
example 1-2 of the present document;
[0035] FIG. 4 is a schematic diagram of an uplink signal in the
application example 1-3 of the present document;
[0036] FIG. 5 is a schematic diagram of an uplink signal in the
application example 2-1 and application example 2-2 of the present
document;
[0037] FIG. 6 is a schematic diagram of an uplink signal in
accordance with the application example 2-3 of the present
document;
[0038] FIG. 7 is a schematic diagram of an uplink signal in
accordance with the application example 3-1, the application
example 3-2 and the application example 3-3 of the present
document;
[0039] FIG. 8 is a schematic diagram of an uplink signal in
accordance with the application example 3-4 of the present
document;
[0040] FIG. 9 is a schematic diagram of an uplink signal in
accordance with the application example 4-1 and the application
example 4-2 of the present document;
[0041] FIG. 10 is a schematic diagram of an uplink signal in
accordance with the application example 5-1, the application
example 5-2 and the application example 5-3 of the present
document;
[0042] FIG. 11 is a schematic diagram of an user equipment in
accordance with an embodiment of the present document;
[0043] FIG. 12 is a flow chart of an uplink signal power reduction
method in a carrier aggregation system in accordance with a first
embodiment of the present document;
[0044] FIG. 13 is a flow chart of an uplink signal power reduction
method in a carrier aggregation system in accordance with a second
embodiment of the present document;
[0045] FIG. 14 is a schematic diagram of uplink symbols sent on
different uplink component carriers being partially overlapped in
accordance with embodiments 1'-1, 1'-2, 1'-3 and 1'-11 of the
present document;
[0046] FIG. 15 is a schematic diagram of uplink symbols sent on
different uplink component carriers being partially overlapped in
accordance with embodiments 1'-4 and 1'-5 of the present
document;
[0047] FIG. 16 is a schematic diagram of uplink symbols sent on
different uplink component carriers being partially overlapped in
accordance with embodiments 1'-6, 1'-7, and 1'-8 of the present
document;
[0048] FIG. 17 is a schematic diagram of uplink symbols sent on
different uplink component carriers being partially overlapped in
accordance with embodiments 1'-9 and 1'-10 of the present
document;
[0049] FIG. 18 is a schematic diagram of uplink symbols sent on
different uplink component carriers being partially overlapped in
accordance with embodiments 2'-1, 2'-2, and 2'-3 of the present
document;
[0050] FIG. 19 is a schematic diagram of uplink symbols sent in
different uplink component carriers being partially overlapped in
accordance with embodiments 2'-4 and 2'-5 of the present
document;
[0051] FIG. 20 a schematic diagram of uplink symbols sent in
different uplink component carriers being partially overlapped in
accordance with embodiments 2'-6, 2'-7 and 2'-8 of the present
document;
[0052] FIG. 21 is a schematic diagram of uplink symbols sent on
different uplink component carriers being partially overlapped in
accordance with embodiments 2'-9 and 2'-10 of the present
document;
[0053] FIG. 22 is a schematic diagram of an uplink signal power
reduction apparatus in a carrier aggregation system;
[0054] FIG. 23 is a schematic diagram of an uplink signal power
reduction apparatus in a carrier aggregation system.
PREFERRED EMBODIMENTS OF THE PRESENT DOCUMENT
[0055] Hereinafter, with combination of the accompanying drawings,
the embodiments of the present document will be described in
detail. It should be noted that, in the case of no conflict, the
embodiments and features of the embodiments of the present
application can be arbitrarily combined with each other.
[0056] An uplink signal sending method applied in a carrier
aggregation system, as shown in FIG. 1 and FIG. 2, comprises:
[0057] After configuring more than two TAs, said UE performs rate
matching for uplink channels and/or uplink signals in which symbols
are overlapped in the time domain on different carriers according
to the signaling instruction from the eNB or the predefined rules,
and then transmitting said uplink channels and/or uplink signals,
or firstly discarding and then transmitting said uplink channels
and/or uplink signals, or transmitting said uplink channels and/or
uplink signals simultaneously. Wherein, said uplink channels can be
PUSCH, PUCCH and/or PRACH; and the abovementioned uplink signal may
be SRS, and said SRS may be periodic SRS or aperiodic SRS.
[0058] In a specific implementation, the abovementioned signaling
instruction from said eNB can be physical signaling, or may be
high-level signaling instruction, and the signaling content can be
a triggering instruction and/or transmission instruction.
[0059] When said signaling content is a transmission instruction,
said transmission instruction may instruct that uplink channels
and/or uplink signals in which symbols are to be overlapped in the
time domain on different carriers are allowed to send
simultaneously, or may also instruct said UE to perform rate
matching for said uplink channels and/or uplink signals in which
symbols are to be overlapped in the time domain on different
carriers according to certain rules (for specific rules, please
refer to the following description of sending rule, and they will
not be repeated here), and then send the uplink channels and/or
uplink signals, or to discard and then send, or to simultaneously
send said uplink channels and/or uplink signals.
[0060] Wherein, said simultaneous transmission is specifically:
directly sending said uplink channels and/or uplink signals with
non processing on the uplink channels and/or uplink signals in
which symbols are to be overlapped in the time domain; said rate
matching is specifically: perform Rate Matching (referred to as RM)
for said uplink channels and/or uplink signals in which symbols are
to be overlapped in the time domain, empty one particular symbol in
said uplink channel and do not send within said symbol; said
discarding is particularly: discard the specific uplink channels
and/or uplink signals in which symbols are to be overlapped in the
time domain, and not send the discarded uplink channels and/or
uplink signals.
[0061] Furthermore, the abovementioned predefined rules are
triggering rules and sending rules respectively, and only the
triggering rule is met will the sending rules be processed;
wherein, the triggering rules in the predefined rules are at least
one of the following rules:
[0062] 1) the difference of said TA values of different uplink
carriers configured by said eNB for said UE exceeds a first preset
threshold value;
[0063] 2) said UE finds out that the difference of the actual
sending time of the configured different uplink carriers exceeds a
second preset threshold value.
[0064] said sending rules in said predefined rules are at least one
of the following rules:
[0065] 1) when said uplink channels in which symbols are to be
overlapped in the time domain on different carriers are PUSCHs,
said UE may select any one of the following methods to process:
[0066] a) said UE simultaneously sends the PUSCHs on different
carriers;
[0067] b) said UE discards the PUSCHs with lower priority according
to certain priorities, and sends the PUSCH with higher priority. In
the case that the PUSCHs with the same priority having symbols to
be overlapped in the time domain, said UE simultaneously sends the
PUSCHs with the same priority;
[0068] c) according to said priority rule, said UE performs rate
matching for the PUSCHs with lower priority, and empties the
symbols in the PUSCHs with lower priority that will be overlapped
with the symbols in the PUSCHs with higher priority, and then sends
the PUSCHs on different carriers. When the symbols in the PUSCHs
with the same priority are to be overlapped in the time domain,
said UE simultaneously sends the PUSCHs with the same priority.
[0069] It should be noted that, the priorities in the rule 1) are
at least one of the following priorities:
[0070] I) priorities determined according to whether the uplink
control information (referred to as UCI) is carried or not,
wherein: the priority of the PUSCHs carrying UCI is higher than
that of the PUSCHs not carrying UCI;
[0071] II) determine the priorities in accordance to the carriers
carrying the PUSCH, wherein, the priority of the PUSCHs in the
PCell is higher than that of the PUSCHs in the SCell;
[0072] III) determine the priorities according to the subframe
indexes, wherein: the priority of the PUSCHs in a former sub-frame
is higher than that of the PUSCHs in a latter sub-frame;
[0073] IV) determine the priorities according to the subframe
indexes, wherein: the priority of the PUSCHs in the latter subframe
is higher than that of the PUSCHs in the former subframe;
[0074] V) determine the priorities in accordance with whether there
is newly sent data or not, wherein: the priority of the PUSCHs with
newly sent data is higher than that of the PUSCHs carrying the
resent data.
[0075] 2) When said uplink channels in which symbols are to be
overlapped in the time domain on different carriers are PUSCHs and
PUCCHs, said UE may select any of the following methods to
process:
[0076] a) said UE simultaneously sends the PUSCHs and PUCCHs on
different carriers;
[0077] b) said UE discards the PUSCHs and only sends the
PUCCHs;
[0078] c) said UE performs rate matching for said PUSCHs, and
empties the symbols in the PUSCHs that are to be overlapped with
the symbols in the PUCCHs, and sends the PUCCHs and PUSCHs on
different carriers.
[0079] When said symbols in the PUSCHs and the PUCCHs on different
carriers are overlapped in the time domain, after said UE performs
the same operation on all the PUSCHs overlapped with the PUCCHs
according to the method c), if there are symbols overlapped in the
time domain in the PUSCHs, process the PUSCHs in which the symbols
are overlapped in the time domain on different carriers.
[0080] 3) When the uplink channels in which symbols are overlapped
in the time domain on different carriers are PUSCHs and SRSs, said
UE can select any of the following methods to process:
[0081] a) said UE simultaneously sends the SRSs and PUSCHs on
different carriers;
[0082] b) said UE discards said SRSs, and only sends the
PUSCHs;
[0083] c) said UE discards the PUSCHs, and only send the SRSs;
[0084] d) said UE performs rate matching on said PUSCHs, empties
the symbols in said PUSCHs that are overlapped with said SRSs, and
then sends said PUSCHs and SRSs on different carriers.
[0085] When the PUSCHs on multiple different carriers and the SRSs
on multiple different carriers have symbols to be overlapped in the
time domain, said UE processes all the overlapped PUSCHs and SRSs
according to the method c), and if there is still the case that the
symbols in the PUSCHs are overlapped in the time domain, in
accordance with the rule 1), processes the PUSCHs in which symbols
are overlapped in the time domain on different carriers.
[0086] 4) when the uplink channels in which the symbols are
overlapped in the time domain on different carriers are PUCCHs and
SRSs, said UE can select any of the following methods to
process:
[0087] a) said UE simultaneously sends the PUCCHs and the SRSs on
different carriers;
[0088] b) said UE discards said SRSs, and only sends said
PUCCHs;
[0089] 5) When the symbols in the PUCCHs and SRSs are overlapped in
the time domain on multiple different carriers, said UE can select
any one of the following methods to process:
[0090] a) said UE simultaneously sends the PUCCHs and SRSs on
multiple different carriers;
[0091] b) said UE discards all SRSs and only sends the PUCCHs;
[0092] c) said UE discards all the periodic SRS in which symbols
are overlapped, and simultaneously sends all the aperiodic SRSs and
PUCCHs in which symbols are overlapped.
[0093] In the present embodiment, an user equipment, as shown in
FIG. 11, is applied to the carrier aggregation system,
comprising:
[0094] a receiving module, used to receive more than two timing
advances configured by the evolved NodeB;
[0095] a sending module, used to send after performing rate
matching for the uplink channels and/or uplink signals in which
symbols are overlapped in the time domain on different carriers, or
to send the uplink channels and/or uplink signals after discarding,
or simultaneously sending said uplink channels and/or uplink
signals according to signaling instruction or predetermined rules
sent from the NodeB.
[0096] Preferably, said signaling instruction is a sending
instruction, said transmission instruction is used to instruct said
UE to simultaneously send said uplink channels and/or uplink
signals in which the symbols are overlapped in the time domain on
different carriers, or, to instruct said UE to perform
rate-matching said uplink channels and/or uplink signals in which
symbols are to be overlapped in the time domain on different
carriers according to a certain rule, and then send the said uplink
channels and/or uplink signals, discard and then send said uplink
channels and/or uplink signals, or simultaneously send said uplink
channels and/or uplink signals.
[0097] Preferably, said sending module performs rate matching for
said uplink channels and/or uplink signals in which symbols are to
be overlapped in the time domain on different carriers,
specifically comprising:
[0098] said sending module empties a particular symbol in the
uplink channels for the uplink channels and/or uplink signals in
which symbols are to be overlapped in the time domain, and does not
send in said symbol.
[0099] Preferably, said sending module discards said uplink
channels and/or uplink signals in which symbols are overlapped in
the time domain on different carriers, specifically comprising:
[0100] said sending module discards the uplink channels and/or
uplink signals in which the specific symbols are to be overlapped
in the time domain, and does not send the corresponding uplink
channel and/or uplink signal on the discarded symbols.
[0101] Preferably, said predefined rules comprise triggering rules
and sending rules, and only said triggering rules are met will the
uplink channels and/or uplink signals be processed according to
said sending rules;
[0102] said triggering rules are at least one of the following
rules:
[0103] the difference of the TA values of different uplink carriers
configured by the eNB for the UE exceeds a first preset threshold
value; or
[0104] said UE finds out that the difference of the actual sending
time of the configured different uplink carriers exceeds a second
preset threshold value.
[0105] Preferably, said sending rules comprise:
[0106] when said uplink channels in which symbols are to be
overlapped in the time domain on different carriers are PUSCHs,
said sending module selects any one of the following methods to
process:
[0107] method one: said sending module simultaneously sends the
PUSCHs on different carriers;
[0108] method two: according to certain priorities, said sending
module discards the PUSCHs with lower priority and sends the PUSCHs
with higher priority. In the case that the PUSCHs with the same
priority have symbols to be overlapped in the time domain, said
sending module simultaneously sends the PUSCHs with the same
priority;
[0109] method three: according to the priority rule, said sending
module empties the symbols in the PUSCHs with lower priority that
are to be overlapped with the symbols in the PUSCHs with higher
priority, and then sends the PUSCHs on different carriers. When the
symbols in the PUSCHs with the same priority are to be overlapped
in the time domain, said sending module simultaneously sends said
PUSCHs with the same priority.
[0110] Preferably, when determining the priorities according to
whether the uplink control information (referred to as UCI) is
carried or not, the priority of the PUSCHs carrying UCI is higher
than that of the PUSCHs not carrying UCI;
[0111] when determining the priorities according to the carriers
carrying the PUSCHs, the priority of the PUSCHs in the PCell is
higher than that of the PUSCHs in the SCell;
[0112] when determining the priorities according to the subframe
indexes, the priority of the PUSCHs in the former subframe is
higher than that of the PUSCHs in the latter subframe;
[0113] when determining the priorities according to the subframe
indexes, the priority of the PUSCHs in the latter subframe is
higher than that of the PUSCHs in the former subframe;
[0114] when determining the priorities in accordance with whether
there is newly sent data or not, the priority of the PUSCHs with
newly sent data is higher than that of the PUSCHs carrying resent
data.
[0115] Preferably, said sending rules comprise:
[0116] when the uplink channels in which symbols are to be
overlapped in the time domain on different carriers are PUSCHs and
PUCCHs, said sending module may select any of the following methods
to process:
[0117] method one: said sending module simultaneously sends the
PUSCHs and PUCCHs on different carriers;
[0118] method two: said sending module discards the PUSCHs and only
sends the PUCCHs;
[0119] method three: said sending module performs rate matching,
and empties the symbols in the PUSCHs that are to be overlapped
with the symbols in the PUCCHs, and sends the PUCCHs and PUSCHs on
different carriers.
[0120] Preferably, when the symbols in the PUSCHs and the PUCCHs on
different carriers are overlapped in the time domain, after
processing all said PUSCHs overlapped with said PUCCHs according to
the method three, if there are still symbols in the PUSCHs to be
overlapped in the time domain, select any of the following methods
to process said more than two PUSCHs:
[0121] method one: said sending module simultaneously sends the
PUSCHs on different carriers;
[0122] method two: according to certain priorities, said sending
module discards the PUSCHs with lower priority, and sends the
PUSCHs with higher priority; when the symbols in the PUSCHs with
the same priority are to be overlapped in the time domain, said
sending module simultaneously sends the PUSCHs with same
priority;
[0123] method three: according to certain priorities, said sending
module empties the symbols in the PUSCHs with lower priority that
are to be overlapped with the symbols in the PUSCHs with higher
priority, and then sends the PUSCHs on different carriers; when the
symbols in the PUSCHs with the same priority are to be overlapped
in the time domain, said sending module simultaneously sends the
PUSCHs with the same priority.
[0124] Preferably, said sending rules comprise:
[0125] When said uplink channels in which symbols are to be
overlapped in the time domain on different carriers are PUSCHs and
SRSs, said sending module may select any of the following methods
to process:
[0126] method one: said sending module simultaneously sends the
PUSCHs and the SRSs on different carriers;
[0127] method two: said sending module discards the SRSs and only
sends the PUSCHs;
[0128] method three: said sending module discards the PUSCHs and
only sends the SRSs;
[0129] method four: said sending module empties the symbols in the
PUSCHs that are overlapped with the SRSs, and then sends the PUSCHs
and SRSs on different carriers.
[0130] Preferably, when the PUSCHs on more than two different
carriers and the SRSs on more than two different carriers have
symbols to be overlapped in the time domain, after processing all
the overlapped SRSs and PUSCHs according to the method four, there
are still symbols to be overlapped in the time domain in said more
than two PUSCHs, then said sending module selects any of the
following methods to process said more than two PUSCHs:
[0131] method one: said sending module simultaneously sends the
PUSCHs on different carriers;
[0132] method two: according to certain priorities, said sending
module discards the PUSCHs with lower priority and sends the PUSCHs
with higher priority; when the PUSCHs with the same priority have
symbols to be overlapped in the time domain, said sending module
simultaneously sends the PUSCHs with the same priority;
[0133] method three: according to the priority rule, said sending
module empties the symbols in the PUSCHs with lower priority that
are to be overlapped with the symbols in the PUSCHs with higher
priority, and then sends the PUSCHs on different carriers; when the
PUSCHs with the same priority have symbols to be overlapped in the
time domain, said sending module simultaneously sends the PUSCHs
with the same priority.
[0134] Preferably, said sending rules comprise:
[0135] When the uplink channels in which symbols are to be
overlapped in the time domain on different carriers are PUCCHs and
SRSs, said sending module selects any of the following methods to
process:
[0136] method one: said sending module simultaneously sends the
PUCCHs and SRSs on different carriers;
[0137] method two: said sending module discards the SRSs and only
sends the PUCCHs.
[0138] Preferably, said sending rules comprise:
[0139] when the SRSs and PUCCHs on multiple different carriers have
symbols to be overlapped in the time domain, said sending module
selects any of the following methods to process:
[0140] method one: said sending module simultaneously sends the
PUCCHs and SRSs on multiple different carriers;
[0141] method two: said sending module discards all the SRSs, and
only sends the PUCCHs;
[0142] method three: said sending module discards all the periodic
SRS in which symbols are to be overlapped, and simultaneously sends
all the aperiodic SRSs and PUCCHs in which symbols are to be
overlapped.
[0143] Preferably, said predefined rules comprises triggering rules
and sending rules; in the case that said triggering rules are met,
process said uplink channels and/or uplink signals according to
said sending rules;
[0144] Said triggering rules are at least one of the following
rules:
[0145] the difference of the timing advances of different uplink
carriers configured by Said eNB for said UE exceeds the first
preset threshold value; or,
[0146] said UE finds out that the difference of the actual
transmission time of the configured different uplink carriers
exceeds the second preset threshold value;
[0147] or, said UE is configured with multiple timing advances,
when the uplink channels carried on different carriers have symbols
not aligned in the time domain, and the symbols on different
carriers are to be overlapped in the time domain, it is determined
that the sum of the transmission power of each uplink channel of
said UE exceeds the maximum transmission power configured by said
UE.
[0148] In the following, the present document will be further
described with a plurality of application examples in combination
with the accompanying drawings.
Application Example 1
[0149] In the following application examples 1-1 to 1-5, said UE is
configured with two uplink carriers CC1 and CC2, wherein the CC1 is
a PCell and the CC2 is a SCell. Said CC1 and said CC2 belong to
different TA groups, wherein the CC1 belongs to the TA group 1 and
the CC2 belongs to the TA group 2.
Application Example 1-1
[0150] As shown in FIG. 3, in subframe n, both the CC1 and the CC2
need to send the PUSCHs. Since the CC1 and the CC2 have different
TAs, the PUSCH symbols in the sub-frame n on the CC1 are overlapped
with the PUSCH symbols in the subframe n on the CC2. The TAG in
FIG. 3 represents the TA group, so as those in the following
drawings.
[0151] At this time, if said eNB signaling instructs said UE to
simultaneously send the PUSCHs on both the CC1 and the CC2, said UE
directly sends the PUSCHs on both the CC1 and the CC2, or the UE
simultaneously sends the PUSCHs on both the CC1 and the CC2
according to predefined rules 1).
Application Example 1-2
[0152] As shown in FIG. 3, in the subframe n, both the CC1 and the
CC2 need to send the PUSCHs. Since the CC1 and the CC2 have
different TAs, the PUSCH symbols in the sub-frame n on the CC1 are
partially overlapped with the PUSCH symbols in the subframe n on
the CC2. Moreover, the PUSCH in the CC1 carries UCI, while the
PUSCH in the CC2 does not.
[0153] If at this time the eNB instructs the UE via signaling to
discard the PUSCH on one of the CCs in accordance with the priority
rule, or the UE discards the PUSCH on one of the CCs according to
the priority rule according to the method b) in the predefined rule
1), then:
[0154] If method II) is used to determine the priority at this
time, that is, determining the priority according to the carrier
carrying the PUSCH, since the CC1 is a PCell, the priority of the
PUSCH on the CC1 is higher than that of the PUSCH on the CC2, and
the UE discards the PUSCH on the CC2, while only sends the PUSCH on
the CC1;
[0155] if method I) is used to determine the priority at this time,
that is, determining the priority according to whether it carries
the UCI or not, since the PUSCH in the CC1 carries the UCI, the
priority of the PUSCH on the CC1 is higher than that of the PUSCH
on the CC2, and the UE discards the PUSCH on the CC2, while only
sends the PUSCH on the CC1.
Application Example 1-3
[0156] As shown in FIG. 4, in the subframe n, the CC1 needs to send
the PUSCH, and in the subframe n+1, the CC2 needs to send the
PUSCH. Since the CC1 and the CC2 have different TAs, the last PUSCH
symbol in the sub-frame n on the CC1 is partially overlapped with
the first PUSCH symbol in the subframe n+1 on the CC2. Moreover,
the PUSCH on the CC1 carries the UCI, while the PUSCH on the CC2
does not.
[0157] At this time, if the eNB instructs the UE via signaling to
perform rate matching for one PUSCH according to the priority rule,
and empty the symbol that is overlapped with another PUSCH symbol,
or according to the method c) in the predefined rule 1), said UE
performs rate matching for one PUSCH according to the priority
rule, and empties the symbol that is overlapped with another PUSCH
symbol, then:
[0158] if the method I) is used to determine the priority at this
time, that is, the priority is determined according to whether the
UCI is carried or not, since the PUSCH in the CC1 carries the UCI,
the priority of the PUSCH on the CC1 is higher than that of the
PUSCH on the CC2, therefore the UE performs rate matching for the
PUSCH on the CC2, empties the first PUSCH symbol on the CC2, and
then sends the other PUSCH symbols on the CC1 in the sub-frame n
and on the CC2 in the subframe n+1;
[0159] if Method II) is used to determine the priority at this
time, that is, the priority is determined according to the carriers
carrying the PUSCH, since the CC1 is a PCell, the priority of the
PUSCH on the CC1 is higher than that of the PUSCH on the CC2,
therefore, said UE performs rate matching for the PUSCH on the CC2,
while empties the first symbol in the PUSCH on the CC2, and then
sends the PUSCHs on the CC1 in the subframe n and on the CC2 in the
subframe n+1;
[0160] if method III) is used to determine the priority at this
time, that is, the priority is determined according to the subframe
indexes, and it is regulated that the PUSCH in the former subframe
is higher than that of PUSCH in the latter subframe, since the
subframe index corresponding to the PUSCH on the CC1 is n, while
the subframe index corresponding to the PUSCH on the CC2 is n+1,
the priority of the PUSCH on the CC1 is higher than that of the
PUSCH on the CC2, therefore said UE performs rate matching for the
PUSCH on the CC2, empties the first symbol in the PUSCH on the CC2,
and then sends the PUSCHs on the CC1 in the subframe n and on the
CC2 in the subframe n+1;
[0161] if method IV) is used to determine the priority at this
time, that is, the priority is determined according to the subframe
indexes, and it is regulated that the PUSCH in the latter subframe
is higher than the PUSCH in the former subframe, since the subframe
index corresponding to the PUSCH on the CC1 is n, while the
subframe index corresponding to the PUSCH on the CC2 is n+1, the
priority of the PUSCH on the CC2 is higher than that of the PUSCH
on the CC1, therefore, the UE performs rate matching for the PUSCH
on the CC1, empties the last symbol in the PUSCH on the CC1, and
then sends the PUSCHs on the CC1 in subframe n and on the CC2 in
the sub-frame n+1.
Application Example 1-4
[0162] As shown in FIG. 3, in the subframe n, both the CC1 and the
CC2 need to send the PUSCHs. Since the CC1 and the CC2 have
different TAs, the PUSCH symbols in the sub-frame n on the CC1 are
partially overlapped with the PUSCH symbols in the subframe n on
the CC2. Wherein, the PUSCH on the CC1 is newly sent data, while
the PUSCH on the CC2 is resent data.
[0163] At this time, if the eNB instructs the UE via signaling to
perform rate matching for one of the PUSCHs according to their
priorities, and to empty the symbol that is overlapped with the
other PUSCH symbol, or according to predefined rules 1), the UE
performs rate matching for one of the PUSCHs according to their
priorities, and empties the symbol that is overlapped with the
other PUSCH symbol, and if method VI) is used to determine the
priority at this time, then since the PUSCH in the CC1 carries
newly sent data, while the PUSCH on the CC2 carries resent data,
the priority of the PUSCH on the CC1 is higher than that of the
PUSCH on the CC2, then said UE discards the PUSCH on the CC2, while
only sends the PUSCH on the CC1.
Application Example 1-5
[0164] As shown in FIG. 4, in the subframe n, the CC1 needs to send
the PUSCH, and in the subframe n+1, the CC2 needs to send the
PUSCH. Since the CC1 and the CC2 have different TAs, the last PUSCH
symbol in the sub-frame n on the CC1 is partially overlapped with
the first PUSCH symbol in the subframe n on the CC2. Wherein, the
PUSCH on the CC1 carries newly sent data, while the PUSCH on the
CC2 carries resent data.
[0165] If at this time the eNB instructs the UE via signaling to
discard the PUSCH on one of the CCs in accordance with their
priorities, or according to the method c) in the predefined rules
1), said UE performs rate matching for one of the PUSCHs according
to their priorities, and empties the symbol that is overlapped with
the other PUSCH symbol, the if the prioritizing method at this time
is the method VI), the priority of the PUSCH on the CC1 is higher
than that of the PUSCH on the CC2 since the PUSCH on the CC1 is
newly sent data and the PUSCH on the CC2 is resent data, therefore,
the UE performs rate matching for the PUSCH on the CC2 in the
subframe n+1, empties the first PUSCH symbol on the CC2 in the
sub-frame n+1, and sends the PUSCH on the CC1 in the sub-frame n
and the PUSCH on the CC2 in the subframe n+1.
Application Example 2
[0166] In the following application examples 2-1 to 2-3, said UE is
configured with two uplink carriers CC1 and CC2, wherein the CC1 is
a PCell and the CC2 is a SCell. The CC1 and the CC2 belong to
different TA groups, wherein said CC1 belongs to the TA group 1,
and said CC2 belongs to the TA group 2.
Application Example 2-1
[0167] As shown in FIG. 5, in the subframe n, the CC1 needs to send
the PUCCH, while the CC2 needs to send the PUSCH. Since the CC1 and
the CC2 have different TAs, the PUCCH symbol in the sub-frame n on
the CC1 is partially overlapped with the PUSCH symbol in the
subframe n on the CC2.
[0168] At this time, if the eNB instructs the UE via the signaling
to simultaneously send the PUCCH on the CC1 and the PUSCH on the
CC2, or the UE simultaneously sends the PUSCH on the CC1 and the
PUCCH on the CC2 according to the method a) in the predefined rules
2), the UE directly sends the PUSCH on the CC1 and the PUCCH on the
CC2.
Application Example 2-2
[0169] As shown in FIG. 5, in the subframe n, the CC1 needs to send
the PUCCH, and the CC2 needs to send the PUSCH. Since the CC1 and
the CC2 have different TAs, the PUCCH symbol in the subframe n on
the CC1 is partially overlapped with the PUSCH symbol in the
subframe n on the CC2.
[0170] At this time, if the eNB instructs the UE via signaling to
discard the PUSCH on the CC2 and only send the PUCCH on the CC1, or
the UE discards the PUSCH which has symbol overlapped the PUCCH
according to the method b) in the predefined rules 2), the UE
discards the PUSCH on the CC2 and only sends the PUCCH on the
CC1.
Application Example 2-3
[0171] As shown in FIG. 6, in the subframe n, the CC1 needs to send
the PUCCH, while in the sub-frame n+1, the CC2 needs to send the
PUSCH. Since the CC1 and the CC2 have different TAs, the last PUCCH
symbol in the subframe n on the CC1 is partially overlapped with
the first PUSCH symbol in the subframe n+1 on the CC2.
[0172] At this time, if the eNB instructs the UE via the signaling
to perform rate matching for the PUSCH on the CC2, empty the first
PUSCH symbol in the subframe n+1 on the CC2, and then send the
PUCCH on the CC1 in the subframe n and the PUSCH on the CC2 in the
sub-frame n+1, or the UE performs rate matching for the PUSCH in
which symbol is overlapped with the PUCCH and empties the PUSCH
symbol that is overlapped with the PUCCH according to the method c)
in the predefined rules 2), then said UE performs rate matching for
the PUSCH on the CC2, empties the first PUSCH on the CC2, and then
sends the PUCCH on the CC1 in the sub-frame n and the PUSCH on the
CC2 in the sub-frame n+1.
Application Example 3
[0173] In the following application examples 3-1 to 3-4, said UE is
configured with two uplink carriers CC1 and CC2, wherein the CC1 is
a PCell and the CC2 is a SCell. The CC1 and the CC2 belong to
different TA groups, wherein the CC1 belongs to the TA group 1 and
the CC2 belongs to the TA group 2.
Application Example 3-1
[0174] As shown in FIG. 7, in the subframe n, the CC1 needs to send
the PUSCH and the CC2 needs to send the SRS. Since the CC1 and the
CC2 have different TA, the PUSCH symbol in the sub-frame n on the
CC1 is overlapped with the SRS symbol in the sub-frame n on the
CC2.
[0175] At this time, if the eNB instructs the UE via signaling to
simultaneously send the PUSCH on the CC1 and the SRS on the CC2, or
the UE simultaneously sends the PUSCH on the CC1 and the SRS on the
CC2 according to the method a) in the predefined rule 3), then said
UE simultaneously sends the PUSCH on the CC1 and the SRS on the
CC2.
Application Example 3-2
[0176] As shown in FIG. 7, in the subframe n, the CC1 needs to send
the PUSCH and the CC2 needs to send the SRS. Since the CC1 and the
CC2 have different TAs, the PUSCH symbol in the subframe n on the
CC1 is overlapped with the SRS symbol in the sub-frame n on the
CC2.
[0177] At this time, if the eNB instructs the UE via signaling to
discard the PUSCH on the CC1 and only send the SRS on the CC2, or
the UE discards the PUSCH that has symbol overlapped with the SRS
in the time domain according to the method c) in the predefined
rule 3), then the UE discards the PUSCH on the CC1, while only
sends the SRS on the CC2.
Application Example 3-3
[0178] As shown in FIG. 7, in the subframe n, the CC1 needs to send
the PUSCH and the CC2 needs to send the SRS. Since the CC1 and the
CC2 have different TAs, the PUSCH symbol in the subframe n on the
CC1 is overlapped with the SRS symbol in the subframe n on the
CC2.
[0179] At this time, if the eNB instructs the UE via signaling to
discard the SRS on the CC2 and only send the PUSCH on the CC1, or
the UE discards the SRS which has symbol overlapped with the PUSCH
in the time domain according to the method b) in the predefined
rule 3), then said UE discards the SRS on the CC2 and only sends
the PUSCH on the CC1.
Application Example 3-4
[0180] As shown in FIG. 8, in the subframe n, the CC1 needs to send
the SRS, and in the subframe n+1, the CC2 needs to send the PUSCH.
Since the CC1 and the CC2 have different TAs, the SRS symbol in the
subframe n on the CC1 is overlapped with the PUSCH symbol in the
subframe n+1 on the CC2.
[0181] At this time, if the eNB instructs the UE via the signaling
to perform rate matching for the PUSCH on the CC2 and empty the
symbol in the PUSCH that is overlapped with the SRS on the CC1 in
the time domain, or the UE performs rate matching for the PUSCH on
the CC2 and empties the rate matched PUSCH symbol that is
overlapped with the SRS symbol in the time domain according to the
method d) in the predefined rule 3), then the UE performs rate
matching for the PUSCH on the CC2, empties the first PUSCH symbol
on the CC2, and sends the SRS on the CC1 in the subframe n and the
PUSCH on the CC2 in the subframe n+1.
Application Example 4
[0182] In the following application examples 4-1 and 4-2, the UE is
configured with two uplink carriers CC1 and CC2, wherein the CC1 is
a PCell and the CC2 is a SCell. The CC1 and the CC2 belong to
different TA groups, wherein the CC1 belongs to the TA group 1 and
the CC2 belongs to the TA group 2.
Application Example 4-1
[0183] As shown in FIG. 9, in the subframe n, the CC1 needs to send
the PUCCH, and the CC2 needs to send the SRS. Since the CC1 and the
CC2 have different TAs, the PUCCH symbol in the subframe n on the
CC1 is overlapped with the SRS symbol in the subframe n on the
CC2.
[0184] If at this time the eNB instructs the UE via the signaling
to simultaneously send the PUCCH on the CC1 and the SRS on the CC2,
or the UE simultaneously sends the PUCCH on the CC1 and the SRS on
the CC2 according to the method a) in the predefined rule 4), then
the UE simultaneously sends the PUCCH on the CC1 and the SRS on the
CC2.
Application Example 4-2
[0185] As shown in FIG. 9, in the subframe n, the CC1 needs to send
the PUCCH and the CC2 needs to send the SRS. Since the CC1 and the
CC2 have different TAs, the PUCCH symbol in the subframe n on the
CC1 is overlapped with the SRS symbol in the subframe n on the
CC2.
[0186] At this time, if the eNB instructs the UE via the signaling
to discard the SRS on the CC2 and only send the PUCCH on the CC1,
or the UE discards the SRS which has symbol overlapped with the
PUCCH according to the method b) in the predefined rule 4), then
said UE discards the SRS on the CC2 and sends the PUCCH on the
CC1.
Application Example 5
[0187] In the following application examples 5-1 to 5-3, the UE is
configured with three uplink carriers, which are the CC1, CC2 and
CC3 respectively, wherein the CC1 is a PCell, and the CC2 and the
CC3 are SCells. Wherein the CC1 belongs to the TA group 1 and the
CC2 and the CC3 belong to the TA group 2.
Application Example 5-1
[0188] As shown in FIG. 10, in the subframe n, the CC1 needs to
send the PUCCH, and both the CC2 and the CC3 need to send the SRS,
wherein the CC2 is aperiodic SRS and the CC3 is periodic SRS. Since
the CC1, CC2 and CC3 have different TAs, the PUCCH symbol in the
subframe n on the CC1, the SRS symbol in the subframe n on the CC2,
and the SRS symbol in the subframe n on the CC3 are overlapped.
[0189] At this time, if the eNB instructs the UE via signaling to
simultaneously send the PUCCH on the CC1 and the SRS on both the
CC2 and the CC3, or the UE simultaneously sends the SRS and the
PUCCH according to the method a) in the predefined rule 5), then
the UE simultaneously sends the PUCCH on the CC1 and the SRS on
both the CC2 and the CC3.
Application Example 5-2
[0190] As shown in FIG. 10, in the subframe n, the CC1 needs to
send the PUCCH, while both the CC2 and the CC3 need to send the
SRS, wherein the CC2 is aperiodic SRS and the CC3 is periodic SRS.
Since the CC1, CC2 and CC3 have different TAs, the PUCCH symbol in
the subframe n on the CC1 is overlapped with the SRS symbol in the
subframe n on the CC2 and the SRS symbol in the subframe n on the
CC3.
[0191] At this time, if the eNB instructs the UE via signaling to
discard the SRSs on the CC2 and the CC3 and only send the PUCCH on
the CC1, or the UE discards the SRSs and only send the PUCCH
according to the method b) in the predefined rule 5), then the UE
discards the SRSs on the CC2 and the CC3 and only sends the PUCCH
on the CC1.
Application Example 5-3
[0192] As shown in FIG. 10, in the subframe n, the CC1 needs to
send the PUCCH, while both the CC2 and the CC3 need to send the
SRS, wherein the CC2 is aperiodic SRS and the CC3 is periodic SRS.
Since the CC1, CC2 and CC3 have different TAs, the PUCCH symbol in
the subframe n on the CC1 is overlapped with the SRS symbol in the
sub-frame n on the CC2 and the SRS symbol in the subframe n on the
CC3.
[0193] At this time, if the eNB instructs the UE via signaling to
discard the periodic SRS on the CC3 and only send the PUCCH on the
CC1 and the aperiodic SRS on the CC2, or the UE discards the
periodic SRS and only sends the PUCCH and the non-periodic SRS
according to the method c) in the predefined rule 5), then the UE
discards the periodic SRS on the CC3 and sends the PUCCH on the CC1
and the aperiodic SRS on the CC2.
[0194] This embodiment provides an uplink signal power reduction
method in the carrier aggregation system and uses the following
scheme:
[0195] The user equipment is configured with multiple TAs, when the
symbols in uplink channels carried on different carriers are not
aligned in the time domain, and the symbols on different carriers
are overlapped in the time domain, if the sum of transmission power
of each uplink channel of the UE is determined exceeding the
maximum transmission power configured by the UE, then
[0196] the evolved NodeB instructs the UE to reduce the
transmission power of the uplink channels in which the symbols are
overlapped in the time domain and that are carried on different
carriers.
[0197] Specifically, the evolved NodeB may instruct the UE through
a physical layer signaling or higher layer signaling to reduce the
transmission power of the uplink channels in which symbols are
overlapped in the time domain on different carriers.
[0198] Furthermore, the evolved NodeB can instruct the predefined
rules for the UE reducing the power;
[0199] then said UE reduces the transmission power of the uplink
channels in which symbols on different carriers are overlapped in
the time domain on different carriers according to the predefined
rules instructed by the evolved NodeB.
[0200] Alternatively, the evolved NodeB may also instruct the UE of
the power reduction method, and or the power reduction object;
[0201] Then the UE reduces the transmission power of the power
reduction object (that is, the designated uplink channels)
according to the power reduction method instructed by the evolved
NodeB.
[0202] As shown in FIG. 12, the uplink signal power reduction
method in the carrier aggregation system in accordance with the
present embodiment mainly comprises the following steps:
[0203] step one, in a carrier aggregation system configured with
the MTA, the UE finds out that the symbols in the uplink signals
carried on different uplink carriers are overlapped in the time
domain, and the sum of the transmission power of the overlapped
symbols exceeds the maximum transmission power configured by the
UE.
[0204] Step two, the eNB notifies the UE via signaling about how to
reduce the transmission power of the uplink signals;
[0205] for example, the evolved NodeB informs the UE to reduce
power according to specified predefined rules, or the evolved NodeB
instructs the UE to reduce the transmission of the specified power
reduction object (the uplink channels), and specify the power
reduction method.
[0206] Wherein, the evolved NodeB may instruct the UE to reduce the
transmission power of all the uplink channels; or may also instruct
the UE to reduce only the power of the overlapped symbols on
different channels, while not reduce the power of the symbols that
are not overlapped.
[0207] Wherein, the power reduction method specified by the evolved
NodeB may be: reduce the transmission power of the uplink channels
on different carriers by a same ratio; reduce power based on the
priorities of the uplink channels, first reduce the transmission
power of the uplink channels with lower priority, and then reduce
the transmission power of the uplink channels with higher priority,
and the like.
[0208] Step three, according to the instructions from the eNB, the
UE reduces the transmission power of the uplink signals on
different uplink carriers.
[0209] Step four, reduce the transmission power, until the
transmission power of the UE does not exceed the maximum
transmission power configured by the UE, and the UE transmits the
uplink signals.
[0210] Furthermore, in the abovementioned embodiment, if the UE
determines that the sum of the transmission power of each uplink
channel exceeds the maximum transmission power configured by the
UE, the UE may inform the evolved NodeB through the physical layer
uplink signaling, so that the evolved NodeB learns that the UE is
in the power limited state.
[0211] An uplink signal power reduction method in a carrier
aggregation system provided in another embodiment of the present
document, uses the following scheme:
[0212] the user equipment is configured with multiple TAs, when the
signals in the uplink channels carried by different carriers are
not aligned in the time domain, and the symbols on different
carriers are overlapped in the time domain, if the sum of the
transmission power of each uplink channel of said UE is determined
exceeding the maximum transmission power configured by the UE,
then
[0213] the UE reduces the transmission power of the uplink channels
in which symbol are overlapped in the time domain on different
carriers according to the predefined rules.
[0214] As shown in FIG. 13, the present embodiment provides an
uplink signal power reduction method in the carrier aggregation
system and uses the following scheme:
[0215] step one, in a carrier aggregation system configured with
the MTA, the UE finds out that the symbols in the uplink signals
carried on different uplink carriers are overlapped in the time
domain, and the sum of the transmission power of the overlapped
symbols exceeds the maximum transmission power configured by the
UE.
[0216] Step two, the UE reduces the transmission power of the
uplink signals on different uplink carriers according to the
predefined rules.
[0217] Wherein, the UE can reduce the transmission power of all the
uplink channels by the same ratio; or, can also reduce the power
according to the priorities of the uplink channels, first reduce
the transmission power of the uplink channels with lower priority,
and then reduce the transmission power of the uplink channels with
higher priority; or, might also only reduce the power of the
symbols that are overlapped on different channels, but not reduce
the power of the symbols that are not overlapped; and so on.
[0218] Step three, reduce the transmission power of the UE, until
the transmission power of the UE does not exceed the maximum
transmission power configured by the UE, and the UE transmits the
uplink signals.
[0219] Furthermore, in the abovementioned embodiment, said uplink
channels are PUSCH, and/or PUCCH, and/or PRACH.
[0220] Furthermore, in the abovementioned embodiment, the method
for the UE judging whether the sum of the transmission power of
each uplink channel exceeds the maximum transmission power
configured by the UE or not can be one of the following
methods:
[0221] 1) the UE judges whether the sum of the power of the uplink
channels carried on each uplink channel in the current subframe
exceeds the maximum transmission power configured by the UE or
not.
[0222] 2) the UE judges whether the sum of the power of the uplink
channels carried on each uplink carrier in the current subframe and
the power of the uplink channels carried in each uplink carrier
that are ready to be sent in the next subframe exceeds the maximum
transmission power configured by the UE or not.
[0223] Furthermore, in the abovementioned embodiment, the
abovementioned predefined rules are at least one of the following
rules:
[0224] rule 1, equal-ratio reduce the transmission power of the
uplink channels on each uplink carrier, until the transmission
power of the UE does not exceed the maximum transmission power
configured by the UE.
[0225] rule 2, according to certain priorities, reduce the power of
each uplink channel, and first reduce of the transmission power of
one or more uplink channels with lower priority, and then reduce
the transmission power of one or more uplink channels with higher
priority.
[0226] Rule 3, only reduce the transmission power of the symbols
that are overlapped on different channels, and do not reduce the
transmission power of the symbols that are not overlapped.
[0227] Furthermore, in the abovementioned predefined rule 2, the
number of uplink channels with the same priority may be one or
more.
[0228] Still furthermore, in the abovementioned predefined rule 2,
if the total transmission power of the uplink channels of the UE
does not exceed the maximum transmission power configured by the UE
after reducing the transmission power of one or more uplink
channels with lower priority, do not reduce the transmission power
of one or more uplink channels with higher priority.
[0229] Still furthermore, in the abovementioned-predefined rule 2,
if the power reduction objects are multiple uplink channels, the
power reduction method is equal-ratio reduction.
[0230] Still furthermore, the prioritizing method in the
abovementioned rule 2 is one or a combination of multiple of the
following methods:
[0231] prioritizing method 1: prioritizing in accordance with the
channel types, and their priorities from high to low can be: PUCCH,
PUSCH.
[0232] prioritizing method 2: prioritizing in accordance with the
carriers carrying the uplink channels, their priorities from high
to low can be: PCell, SCell.
[0233] prioritizing method 3: if the uplink channels in which
symbols are overlapped in the time domain are multiple PUSCHs, in
accordance with whether the UCI is carried to prioritize, and their
priorities from high to low can be: PUSCHs carrying the UCI, PUSCHs
not carrying the UCI.
[0234] Prioritizing method 4: prioritizing in accordance with the
subframe indexes, and their priorities from high to low can be:
uplink channels in the former sub-frame, and uplink channels in the
latter sub-frame.
[0235] Prioritizing method 5: prioritizing in accordance with the
subframe indexes, and its priorities from high to low can be:
uplink channels in the latter sub-frame, uplink channels in the
former sub-frame.
[0236] Prioritizing method 6, if the uplink channels in which the
symbols are overlapped in the time domain are multiple PUSCHs,
prioritizing in accordance with whether the PUSCH carries the
resent data or not, and its priorities from high to low can be:
PUSCH carrying newly sent data, PUSCH carrying resent data.
[0237] Furthermore, the power reduction method in the
abovementioned predefined rule 3 can be equal-ratio reduction, or
priority-based power reduction in the rule 2.
[0238] Hereinafter, the embodiments of the present document will be
described in detail with combination of the accompanying drawings.
It should be noted that, in the case of no conflict, the
embodiments and the features in the embodiments in the present
application may be arbitrarily combined with each other.
Embodiment 1'
[0239] The UE is configured with two uplink carriers CC1 and CC2,
wherein the CC1 is a PCell and the CC2 is a SCell. The CC1 and the
CC2 belong to different TA groups, wherein the CC1 belongs to the
TA group 1 and the CC2 belongs to the TA group 2.
Embodiment 1'-1
[0240] As shown in FIG. 14, in the subframe n, both the CC1 and the
CC2 need to send the PUSCHs. Since the CC1 and the CC2 have
different TA, the PUSCH symbol (labeled as ) in the subframe n on
the CC1 is partially overlapped with the PUSCH symbol (labeled as )
in the subframe n on the CC2.
[0241] At this time, if the sum of the transmission power of the
PUSCH on the CC1 and the transmission power of the PUSCH on the CC2
exceeds the maximum transmission power configured by the UE,
then
[0242] the eNB notifies the UE via signaling to simultaneously
equal-ratio reduce the transmission power of the PUSCHs on the CC1
and the CCs and send the PUSCHs out; or
[0243] according to the predefined rule 1, the UE reduces the
transmission power of the uplink channels on all the carriers by
the same ratio.
[0244] Then UE equal-ratio reduces the transmission power of the
PUSCHs on the CC1 and CC2, until the sum of the transmission power
of the PUSCHs on the CC1 and the CC2 does not exceed the maximum
transmission power configured by the UE, and then the UE
simultaneously sends the PUSCHs on the CC1 and the CC2.
Embodiment 1'-2
[0245] As shown in FIG. 3, in the subframe n, both the CC1 and the
CC2 need to send the PUSCHs. Since the CC1 and the CC2 have
different TAs, the PUSCH symbol (labeled as ) in the subframe n on
the CC1 is partially overlapped with the PUSCH symbol (labeled as )
in the subframe n on the CC2.
[0246] At this time, if the sum of the transmission power of the
PUSCH on the CC1 and the transmission power of the PUSCH on the CC2
exceeds the maximum transmission power configured by the UE,
then
[0247] according to the predefined rule 2, the eNB notifies the UE
via the signaling to reduce power according to certain priorities,
to ensure the transmission power of one or more uplink channels
with higher priority, and reduce the transmission power of one or
more uplink channels with lower priority; or
[0248] according to the predefined rule 2, the UE reduces the power
in accordance with the priority rule, ensures the transmission
power of one or more uplink channels with higher priority, and
reduces the transmission power of one or more uplink channels with
lower priority.
[0249] If at this time is the prioritizing method is the
abovementioned prioritizing method 2, since the CC1 is a PCell and
the CC2 is a SCell, the priority of the PUSCH on the CC1 is higher
than that of the PUSCH on the CC2.
[0250] The UE first reduces the transmission power of the PUSCH on
the CC2, and then reduces the transmission power of the PUSCH on
the CC1, until the total transmission power of the uplink channels
of the UE is not higher than the maximum transmission power
configured by the UE.
Embodiment 1'-3
[0251] As shown in FIG. 14, in the subframe n, both the CC1 and the
CC2 need to send the PUSCHs. Wherein, the PUSCH on the CC1 carries
the UCI and the PUSCH on the CC2 does not. Since the CC1 and the
CC2 have different TAs, the PUSCH symbol (labeled as ) in the
subframe n on the CC1 is partially overlapped with the PUSCH symbol
(labeled as ) in the subframe n on the CC2.
[0252] At this time, if the sum of the transmission power of the
PUSCH on the CC1 and the transmission power of the PUSCH on the CC2
exceeds the maximum transmission power configured by the UE,
then
[0253] according to the predefined rule 2, the eNB notifies the UE
via the signaling to reduce power according to certain priorities,
to ensure the transmission power of one or more uplink channels
with higher priority, and to reduce the transmission power of one
or more uplink channels with lower priority; or
[0254] according to the predefined rule 2, the UE reduces power in
accordance with the priority rule, ensures the transmission power
of one or more uplink channels with higher priority, and reduces
the transmission power of one or more uplink channels with lower
priority.
[0255] If the prioritizing method at this time is the prioritizing
method 3, since the PUSCH on the CC1 carries the UCI, while the
PUSCH on the CC2 does not, the priority of the PUSCH on the CC1 is
higher than that of the PUSCH on the CC2.
[0256] The UE first reduces the transmission power of the PUSCH on
the CC2, and then reduce the transmission power of the PUSCH on the
CC1 until the total transmission power of the uplink channels of
the UE is not higher than the maximum transmission power configured
by the UE.
Embodiment 1'-4
[0257] As shown in FIG. 15, in the subframe n, the CC1 needs to
send the PUSCH, and in the sub-frame n+1, the CC2 also needs to
send the PUSCH. Since the CC1 and the CC2 have different TAs, the
PUSCH symbol (labeled as ) in the subframe n on the CC1 is
partially overlapped with the PUSCH symbol (labeled as ) in the
subframe n+1 on the CC2.
[0258] At this time, if the sum of the transmission power of the
PUSCH in the subframe n on the CC1 and the transmission power of
the PUSCH in the subframe n+1 on the CC2 exceeds the maximum
transmission power configured by the UE, then
[0259] according to the predefined rule 2, the eNB notifies the UE
via the signaling to reduce power according to certain priorities,
to ensure the transmission power of one or more uplink channels
with higher priority, and to reduce the transmission power of one
or more uplink channels with lower priority; or
[0260] according to the predefined rule 2, the UE reduces power in
accordance with said certain priority rule, ensures the
transmission power of one or more uplink channels with higher
priority, while reduces the transmission power of one or more
uplink channels with lower priority.
[0261] If the prioritizing method at this time is the
abovementioned prioritizing method 4, the priority of the PUSCH on
the CC1 is higher than that of the PUSCH on the CC2.
[0262] The UE first reduces the transmission power of the PUSCH on
the CC2, and then reduces the transmission power of the PUSCH on
the CC1, until the total transmission power of the uplink channels
of the UE is not higher than the maximum transmission power
configured by the UE.
Embodiment 1'-5
[0263] As shown in FIG. 15, in the subframe n, the CC1 needs to
send the PUSCH, and in the sub-frame n+1, the CC2 also needs to
send the PUSCH. Since the CC1 and the CC2 have different TAs, the
PUSCH symbol (labeled as ) in the subframe n on the CC1 is
partially overlapped with the PUSCH symbol (labeled as ) in the
subframe n+1 on the CC2.
[0264] At this time, if the sum of the transmission power of the
PUSCH on the CC1 in the subframe n and the transmission power of
the PUSCH on the CC2 in the subframe n+1 exceeds the maximum
transmission power configured by the UE, then
[0265] according to the predefined rule 2, the eNB notifies the UE
via the signaling to reduce power according to certain priorities,
to ensure the transmission power of one or more uplink channels
with higher priority, and to reduce the transmission power of one
or more uplink channels with lower priority; or
[0266] according to the predefined rule 2, the UE reduces power in
accordance with said certain priority rule, ensures the
transmission power of one or more uplink channels with higher
priority, while reduces the transmission power of one or more
uplink channels with lower priority.
[0267] If the prioritizing method at this time is the
abovementioned prioritizing method 5, the priority of the PUSCH on
the CC2 is higher than that of the PUSCH on the CC1.
[0268] The UE first reduces the transmission power of the PUSCH on
the CC1, and then reduces the transmission power of the PUSCH on
the CC2, until the total transmission power of the uplink channels
of the UE is not higher than the maximum transmission power
configured by the UE.
Embodiment 1'-6
[0269] As shown in FIG. 16, in the subframe n, both the CC1 and the
CC2 need to send the PUSCHs. Since the CC1 and the CC2 have
different TAs, the PUSCH symbol (labeled as ) in the subframe n on
the CC1 is partially overlapped with the PUSCH symbol (labeled as )
in the subframe n on the CC2, and the symbol in the overlapped part
is labeled as .
[0270] Assuming that the sum of the transmission power of the PUSCH
on the CC1 and the transmission power of the PUSCH on the CC2
exceeds the maximum transmission power configured by the UE,
[0271] then, the eNB notifies the UE through signaling to
equal-ratio reduce the power of the PUSCH symbols that are
overlapped on the CC1 and the CC2; or
[0272] according to a predefined rule 3, the UE equal-ratio reduces
the power of the symbols that are overlapped on different channels,
while does not reduce the power of the symbols that are not
overlapped.
[0273] The UE equal-ratio reduces only the transmission power of
the symbols (labeled as ) that are overlapped in the PUSCHs on the
CC1 and the CC2, until the sum of the transmission power of the
symbols that are overlapped in the PUSCHs on the CC1 and the CC2
does not exceed the maximum transmission power configured by the
UE, and then the UE simultaneously sends the PUSCHs on the CC1 and
the CC2.
Embodiment 1'-7
[0274] As shown in FIG. 16, in the subframe n, both the CC1 and the
CC2 need to send the PUSCHs. Since the CC1 and the CC2 have
different TAs, the PUSCH symbol (labeled as ) in the subframe n on
the CC1 is partially overlapped with the PUSCH symbol (labeled as )
in the subframe n on the CC2, and the symbol in the overlapped part
is labeled as .
[0275] Assuming that the sum of the transmission power of the PUSCH
on the CC1 and the transmission power of the PUSCH on the CC2
exceeds the maximum transmission power configured by the UE,
[0276] then, the eNB notifies the UE via signaling to equal-ratio
reduce the power of the overlapped PUSCH symbols on the CC1 and the
CC2 according to their priorities; or
[0277] according to a predefined rule 3, the UE reduces the power
of the symbols that are overlapped on different channels according
to their priorities, while does not reduce the power of the symbols
that are not overlapped.
[0278] If the prioritizing method is the abovementioned
prioritizing method 2, since the CC1 is a PCell, and the CC2 is a
SCell, the priority of the PUSCH on the CC1 is higher than that of
the PUSCH on the CC2.
[0279] The UE first reduces the transmission power of the symbols
that are overlapped in the PUSCH on the CC2, and then reduces the
transmission power of the symbols that are overlapped in the PUSCH
on the CC1, until the sum of the transmission power of the symbols
that are overlapped in the PUSCH on the CC1 and the CC2 does not
exceed the maximum transmission power configured by the UE, and
then the UE simultaneously sends the PUSCHs on the CC1 and the
CC2.
Embodiment 1'-8
[0280] As shown in FIG. 16, in the subframe n, both the CC1 and the
CC2 need to send the PUSCHs. Wherein, the PUSCH in the CC1 carries
the UCI while the PUSCH in the CC2 does not. Since the CC1 and CC2
have different TAs, the PUSCH symbol (labeled as ) in the subframe
n on the CC1 is partially overlapped with the PUSCH symbol (labeled
as ) in the subframe n on the CC2, and the symbol in the overlapped
part is labeled as )
[0281] Assuming that the sum of the transmission power of the PUSCH
on the CC1 and the transmission power of the PUSCH on the CC2
exceeds the maximum transmission power configured by the UE,
[0282] then, the eNB notifies the UE via signaling to reduce the
power of the overlapped PUSCH symbols on the CC1 and the CC2
according to their priorities; or
[0283] according to the predefined rule 3, the UE reduces the power
of the overlapped symbols on different channels according to their
priorities, while does not reduce the power of the symbols that are
not overlapped.
[0284] If the prioritizing method is the abovementioned
prioritizing method 3, the priority of the PUSCH on the CC1 is
higher than that of the PUSCH on the CC2.
[0285] The UE first reduces the transmission power of the symbols
that are overlapped in the PUSCH on the CC2, and then reduces the
transmission power of the symbols that are overlapped in the PUSCH
on the CC1, until the sum of the transmission power of the symbols
that are overlapped in the PUSCHs on the CC1 and the CC2 does not
exceed the maximum transmission power configured by the UE, and
then the UE simultaneously sends the PUSCHs on the CC1 and the
CC2.
Embodiment 1'-9
[0286] As shown in FIG. 17, in the subframe n, the CC1 needs to
send the PUSCH, and in the subframe n+1, the CC2 need to send the
PUSCH. Since the CC1 and the CC2 have different TAs, the PUSCH
symbol (labeled as ) in the subframe n on the CC1 is partially
overlapped with the PUSCH symbol (labeled as ) in the subframe n+1
on the CC2, and the symbol in the overlapped part is labeled as
.
[0287] Assuming that the sum of the transmission power of the PUSCH
on the CC1 and the transmission power of the PUSCH on the CC2
exceeds the maximum transmission power configured by the UE,
[0288] then, the eNB notifies the UE via signaling to reduce the
power of the PUSCH symbols that are overlapped on the CC1 and the
CC2 according to their priorities; or
[0289] according to a predefined Rule 3, the UE reduces the power
of the symbols that are overlapped on different channels according
to their priorities, while does not reduce the power of the symbols
that are not overlapped.
[0290] If the prioritizing method is the abovementioned
prioritizing method 4, the priority of the PUSCH on the CC1 is
higher than that of the PUSCH on the CC2.
[0291] The UE first reduces the transmission power of the symbols
that are overlapped in the PUSCH on the CC2, and then reduces the
transmission power of the symbols that are overlapped in the PUSCH
on the CC1, until the sum of the transmission power of the symbols
that are overlapped in the PUSCHs on the CC1 and the CC2 does not
exceed the maximum transmission power configured by the UE, and
then the UE simultaneously sends the PUSCHs on the CC1 and the
CC2.
Embodiment 1'-10
[0292] As shown in FIG. 17, in the subframe n, the CC1 needs to
send the PUSCH, and in the subframe n+1, the CC2 needs to send the
PUSCH. Since the CC1 and the CC2 have different TAs, the PUSCH
symbol (labeled as ) in the subframe n on the CC1 is partially
overlapped with the PUSCH symbol (labeled as ) in the subframe n+1
on the CC2, and the symbol in the overlapped part is labeled as
.
[0293] Assuming that the sum of the transmission power of the PUSCH
on the CC1 and the transmission power of the PUSCH on the CC2
exceeds the maximum transmission power configured by the UE,
[0294] then, the eNB notifies the UE via signaling to reduce the
power of the PUSCH symbols that are overlapped on the CC1 and the
CC2 according to their priorities; or
[0295] according to a predefined rule 3, the UE reduces the power
of the symbols that are overlapped on different channels according
to their priorities, while does not reduce the power of the symbols
that are not overlapped.
[0296] If the prioritizing method is the abovementioned
prioritizing 5, the priority of the PUSCH on the CC2 is higher than
that of the PUSCH on the CC1.
[0297] The UE first reduces the transmission power of the symbols
that are overlapped in the PUSCH on the CC1, and then reduces the
transmission power of the symbols that are overlapped in the PUSCH
on the CC2, until the sum of the transmission power of the symbols
that are overlapped in the PUSCHs on the CC1 and the CC2 does not
exceed the maximum transmission power configured by the UE, and
then the UE simultaneously sends the PUSCHs on the CC1 and the
CC2.
Embodiment 1'-11
[0298] As shown in FIG. 14, in the subframe n, both the CC1 and the
CC2 need to send the PUSCHs. Wherein, the PUSCH on the CC1 carries
newly sent data, while the PUSCH on the CC2 carries the resent
data. Since the CC1 and the CC2 have different TAs, the PUSCH
symbol (labeled as ) in the subframe n on the CC1 is partially
overlapped with the PUSCH symbol (labeled as ) in the subframe n on
the CC2.
[0299] At this time, if the sum of the transmission power of the
PUSCH on the CC1 and the transmission power of the PUSCH on the CC2
exceeds the maximum sendter power configured by the UE, then
[0300] according to the predefined rule 2, the eNB notifies the UE
via the signaling to reduce power according to certain priorities,
to ensure the transmission power of one or more uplink channels
with higher priority, and to reduce the transmission power of one
or more uplink channels with lower priority; or
[0301] according to the predefined rule 2, the UE reduces power in
accordance with the priority rule, ensures the transmission power
of one or more uplink channels with higher priority, and reduces
the transmission power of one or more uplink channels with lower
priority.
[0302] If the prioritizing method at this time is the prioritizing
method 6, since the PUSCH on the CC1 carries newly sent data, while
the PUSCH on the CC2 carries the resent data, the priority of the
PUSCH on the CC1 is higher than that of the PUSCH on the CC2.
[0303] The UE first reduces the transmission power of the PUSCH on
the CC2, and then reduce the transmission power of the PUSCH on the
CC1, until the total transmission power of the uplink channels of
the UE is not higher than the maximum transmission power configured
by the UE.
Embodiment 2'
[0304] The UE is configured with two uplink carriers CC1 and CC2,
wherein the CC1 is a PCell and the CC2 is a SCell. The CC1 and the
CC2 belong to different TA groups, wherein the CC1 belongs to the
TA group 1 and the CC2 belongs to the TA group 2.
Embodiment 2'-1
[0305] As shown in FIG. 18, in the subframe n, the CC1 needs to
send the PUCCH and the CC2 needs to send the PUSCH. Since the CC1
and the CC2 have different TAs, the PUCCH symbol (labeled as ) in
the subframe n on the CC1 is partially overlapped with the PUSCH
symbol (labeled as ) in the subframe n on the CC2.
[0306] At this time, if the sum of the transmission power of the
PUCCH on the CC1 and the transmission power of the PUSCH on the CC2
exceeds the maximum transmission power configured by the UE,
then
[0307] the eNB notifies the UE via signaling to equal-ratio reduce
the transmission power of the PUCCH on the CC1 and of the PUSCH on
the CC2 and then send the PUCCH on the CC1 and of the PUSCH on the
CC2 out; or
[0308] according to the predefined rule 1, the UE equal-ratio
reduces the transmission power of the uplink channels on all the
carriers.
[0309] The UE equal-ratio reduces the transmission power of the
PUCCH on the CC1 and the PUSCH on the CC2, until the sum of the
transmission power of the PUCCH on the CC1 and the PUSCH on the CC2
does not exceed the maximum transmission power configured by the
UE, and then the UE simultaneously sends the PUCCH on the CC1 and
the PUSCH on the CC2.
Embodiment 2'-2
[0310] As shown in FIG. 18, in the subframe n, the CC1 needs to
send the PUCCH and the CC2 needs to send the PUSCH. Since the CC1
and the CC2 have different TAs, the PUCCH symbol (labeled as ) in
the subframe n on the CC1 is partially overlapped with the PUSCH
symbol (labeled as ) in the sub-frame n on the CC2.
[0311] At this time, if the sum of the transmission power of the
PUCCH on the CC1 and the transmission power of the PUSCH on the CC2
exceeds the maximum transmission power configured by the UE,
then
[0312] the eNB notifies the UE via the signaling to reduce the
transmission power of the PUCCH on the CC1 and the transmission
power of the PUSCH on the CC2; or
[0313] according to the predefined rule 2, the UE reduces the
transmission power of the uplink channels on all carriers according
to their priorities.
[0314] If at this time is the prioritizing method is the
abovementioned prioritizing method 1, the priority of the PUCCH on
the CC1 is higher than that of the PUSCH on the CC2.
[0315] The UE first reduces the transmission power of the PUSCH on
the CC2, and then reduces the transmission power of the PUCCH on
the CC1, until the sum of the transmission power of the PUCCH on
the CC1 and the transmission power of the PUSCH on the CC2 is not
higher than the maximum transmission power configured by the UE.
Then the UE sends the PUCCH on the CC1 and the PUSCH on the
CC2.
Embodiment 2'-3
[0316] As shown in FIG. 18, in the subframe n, the CC1 needs to
send the PUCCH and the CC2 needs to send the PUSCH. Since the CC1
and the CC2 have different TAs, the PUCCH symbol (labeled as ) in
the subframe n on the CC1 is partially overlapped with the PUSCH
symbol (labeled as ) in the subframe n on the CC2.
[0317] At this time, if the sum of the transmission power of the
PUCCH on the CC1 and the transmission power of the PUSCH on the CC2
exceeds the maximum transmission power configured by the UE,
then
[0318] the eNB notifies the UE via the signaling to reduce the
transmission power of the PUCCH on the CC1 and the transmission
power of the PUSCH on the CC2 according to their priorities; or
[0319] according to the predefined rule 2, the UE reduces the
transmission power of the uplink channels on all the carriers in
accordance with their priorities.
[0320] If the prioritizing method at this time is the prioritizing
method 2, the priority of the PUCCH on the CC1 is higher than that
of the PUSCH on the CC2.
[0321] The UE first reduces the transmission power of the PUSCH on
the CC2, and then reduce the transmission power of the PUCCH on the
CC1, until the sum of the transmission power of the PUCCH on the
CC1 and the transmission power of the PUSCH on the CC2 is not
higher than the maximum transmission power configured by the UE.
Then the UE sends the PUCCH on the CC1 and the PUSCH on the
CC2.
Embodiment 2'-4
[0322] As shown in FIG. 19, in the subframe n, the CC1 needs to
send the PUCCH, and in the subframe n+1, the CC2 needs to send the
PUSCH. Since the CC1 and the CC2 have different TAs, the PUSCH
symbol (labeled as ) in the subframe n on the CC1 is partially
overlapped with the PUSCH symbol (labeled as ) in the subframe n+1
on the CC2.
[0323] If in the subframe n, the sum of the transmission power of
the PUCCH in the subframe n on the CC1 and the transmission power
of the PUSCH in the subframe n+1 on the CC2 exceeds the maximum
transmission power configured by the UE, then
[0324] the eNB notifies the UE via the signaling to reduce the
transmission power of the PUCCH on the CC1 and the PUSCH on the CC2
according to their priorities; or
[0325] according to the predefined rule 2, the UE reduces the
transmission power of the the uplink channels on all the carriers
according to their priorities.
[0326] If the prioritizing method at this time is the
abovementioned prioritizing method 4, the priority of the PUCCH on
the CC1 is higher than that of the PUSCH on the CC2.
[0327] the UE first reduces the transmission power of the PUSCH in
the subframe n+1 on the CC2, and then reduces the transmission
power of the PUCCH in the subframe n on the CC1, until the sum of
the transmission power of the PUCCH in the subframe n on the CC1
and the transmission power of the PUSCH in the subframe n+1 on the
CC2 is not higher than the maximum transmission power configured by
the UE. Then the UE sends the PUCCH on the CC1 and the PUSCH on the
CC2.
Embodiment 2'-5
[0328] As shown in FIG. 19, in the subframe n, the CC1 needs to
send the PUCCH, and in the subframe n+1, the CC2 needs to send the
PUSCH. Since the CC1 and the CC2 have different TAs, the PUSCH
symbol (labeled as ) in the subframe n on the CC1 is partially
overlapped with the PUSCH symbol (labeled as ) in the subframe n+1
on the CC2.
[0329] If the sum of the transmission power of the PUCCH on the CC1
in the subframe n and the transmission power of the PUSCH on the
CC2 in the sub-frame n+1 exceeds the maximum transmission power
configured by the UE, then
[0330] the eNB notifies the UE via the signaling to reduce the
transmission power of the PUCCH on the CC1 and the transmission
power of the PUSCH on the CC2 according to their priorities; or
[0331] according to the predefined rule 2, the UE reduces the
transmission power of the uplink channels on all the carriers
according to their priorities.
[0332] If the prioritizing method at this time is the
abovementioned prioritizing method 5, the priority of the PUSCH on
the CC2 is higher than that of the PUCCH on the CC1.
[0333] The UE first reduces the transmission power of the PUCCH on
the CC1 in the subframe n+1, and then reduces the transmission
power of the PUSCH in the subframe n on the CC2, until the sum of
the transmission power of the PUCCH on the CC1 in the subframe n
and the transmission power of the PUSCH on the CC2 in the subframe
n+1 is not higher than the maximum transmission power configured by
the UE. Then the UE sends the PUCCH on the CC1 and the PUSCH on the
CC2.
Embodiment 2'-6
[0334] As shown in FIG. 20, in the subframe n, the CC1 needs to
send the PUCCH and the CC2 needs to send the PUSCH. Since the CC1
and the CC2 have different TAs, the PUSCH symbol (labeled as ) in
the subframe n on the CC1 is partially overlapped with the PUSCH
symbol (labeled as ) in the sub-frame n on the CC2, and the
overlapped symbol is labeled as .
[0335] If the sum of the transmission power of the PUCCH on the CC1
and the transmission power of the PUSCH on the CC2 exceeds the
maximum transmission power configured by the UE, then
[0336] the eNB notifies the UE via the signaling to equal-ratio
reduce the transmission power of the PUCCH on the CC1 and the
transmission power of the PUSCH on the CC2; or
[0337] according to the predefined rule 3, the UE equal-ratio
reduces the transmission power of the symbols overlapped in the
uplink channels on all the carriers.
[0338] the UE equal-ratio reduces the transmission power of the
symbols overlapped in the PUCCH on the CC1 and in the PUSCH on the
CC2, until the sum of the transmission power of the overlapped
symbols in the PUCCH on the CC1 and in the PUSCH on the CC2 is not
higher than the maximum transmission power configured by the UE.
Then the UE simultaneously sends the PUCCH on the CC1 and the PUSCH
on the CC2.
Embodiment 2'-7
[0339] As shown in FIG. 20, in the subframe n, the CC1 needs to
send the PUCCH and the CC2 needs to send the PUSCH. Since the CC1
and the CC2 have different TAs, the PUCCH symbol (labeled as ) in
the subframe n on the CC1 is partially overlapped with the PUSCH
symbol (labeled as ) in the subframe n on the CC2, and the
overlapped symbol is labeled as .
[0340] If the sum of the transmission power of the PUCCH on the CC1
and the transmission power of the PUSCH on the CC2 exceeds the
maximum transmission power configured by the UE, then
[0341] the eNB notifies the UE via the signaling to reduce the
transmission power of the PUCCH on the CC1 and the transmission
power of the symbols overlapped in the PUSCH on the CC2; or
[0342] according to the predefined rule 3, the UE reduces the
transmission power of the uplink channels on all the carriers
according to their priorities.
[0343] If the prioritizing method at this time is the
abovementioned prioritizing method 1, the priority of the PUCCH on
the CC1 is higher than that of the PUSCH on the CC2.
[0344] The UE first reduces the transmission power of the symbol
overlapped in the PUSCH on the CC2, and then reduces the
transmission power of the symbol overlapped in the PUCCH on the
CC1, until the sum of the transmission power of the symbol
overlapped in the PUCCH on the CC1 and the transmission power of
the symbol overlapped in the PUSCH on the CC2 is not higher than
the maximum transmission power configured by the UE. Then the UE
sends the PUCCH on the CC1 and the PUSCH on the CC2.
Embodiment 2'-8
[0345] As shown in FIG. 20, in the subframe n, the CC1 needs to
send the PUCCH and the CC2 needs to send the PUSCH. Since the CC1
and the CC2 have different TAs, the PUCCH symbol (labeled as ) in
the subframe n on the CC1 is partially overlapped with the PUSCH
symbol (labeled as ) in the subframe n on the CC2, and the
overlapped symbol is labeled as .
[0346] If the sum of the transmission power of the PUCCH on the CC1
and the transmission power of the PUSCH on the CC2 exceeds the
maximum transmission power configured by the UE, then
[0347] the eNB notifies the UE via the signaling to reduce the
transmission power of the PUCCH on the CC1 and the transmission
power of the PUSCH on the CC2 according to their priorities; or
[0348] according to the predefined rule 3, the UE reduces the
transmission power of the symbols overlapped in uplink channels on
all the carriers according to their priorities.
[0349] If the prioritizing method at this time is the
abovementioned prioritizing method 2, the priority of the PUCCH on
the CC1 is higher than that of the PUSCH on the CC2.
[0350] The UE first reduces the transmission power of the symbol
overlapped in the PUSCH on the CC2, and then reduces the
transmission power of the symbol overlapped in the PUCCH on the
CC1, until the sum of the transmission power of the symbol
overlapped in the PUCCH on the CC1 and the transmission power of
the symbol overlapped in PUSCH on the CC2 is not higher than the
maximum transmission power configured by the UE. Then the UE sends
the PUCCH on the CC1 and the PUSCH on the CC2.
Embodiment 2'-9
[0351] As shown in FIG. 21, in the subframe n, the CC1 needs to
send the PUCCH, and in the sub-frame n+1, the CC2 needs to send the
PUSCH. Since the CC1 and the CC2 have different TAs, the PUCCH
symbol (labeled as ) in the subframe n on the CC1 is partially
overlapped with the PUSCH symbol (labeled as ) in the subframe n+1
on the CC2, and the overlapped symbol is labeled as .
[0352] If the sum of the transmission power of the PUCCH on the CC1
and the transmission power of the PUSCH on the CC2 exceeds the
maximum transmission power configured by the UE, then
[0353] the eNB notifies the UE via the signaling to reduce the
transmission power of the PUCCH on the CC1 and the transmission
power of the symbol overlapped in the PUSCH on the CC2 according to
their priorities; or
[0354] according to the predefined rule 3, the UE reduces the
transmission power of the symbols overlapped in the uplink channels
on all the carriers according to their priorities.
[0355] If the prioritizing method at this time is the
abovementioned prioritizing method 4, the priority of the PUCCH on
the CC1 in the subframe n is higher than that of the PUSCH on the
CC2 in the subframe n+1.
[0356] The UE first reduces the transmission power of the symbol
overlapped in the PUSCH on the CC2 in the subframe n+1, and then
reduces the transmission power of the symbol overlapped in the
PUCCH on the CC1 in the subframe n, until the sum of the
transmission power of the symbol overlapped in the PUCCH on the CC1
in the subframe n and the transmission power of the symbol
overlapped in the PUSCH on the CC2 in the subframe n+1 is not
higher than the maximum transmission power configured by the UE.
Then the UE sends the PUCCH on the CC1 and the PUSCH on the
CC2.
Embodiment 2'-10
[0357] As shown in FIG. 21, in the subframe n, the CC1 needs to
send the PUCCH, and in the sub-frame n+1, the CC2 needs to send the
PUSCH. Since the CC1 and the CC2 have different TAs, the PUCCH
symbol (labeled as ) in tdh subframe n on the CC1 is partially
overlapped with the PUSCH symbol (labeled as ) in the sub-frame n+1
on the CC2, and the overlapped symbol is labeled as .
[0358] If at this time, the sum of the transmission power of the
PUCCH on the CC1 and the transmission power of the PUSCH on the CC2
exceeds the maximum transmission power configured by the UE,
then
[0359] the eNB notifies the UE via the signaling to reduce the
transmission power of the PUCCH on the CC1 and the transmission
power of the symbol overlapped in the PUSCH on the CC2 according to
their priorities; or
[0360] according to the predefined rule 3, the UE reduces the
transmission power of the symbols overlapped in the uplink channels
on all the carriers according to their priorities.
[0361] If the prioritizing method at this time is the
abovementioned prioritizing method 5, the priority of the PUSCH on
the CC2 in the subframe n+1 is higher than that of the PUCCH on the
CC1 in the subframe n.
[0362] The UE first reduces the transmission power of the symbol
overlapped in the PUCCH on the CC1 in the subframe n, and then
reduces the transmission power of the symbol overlapped in the
PUSCH on the CC1 in the subframe n+1, until the sum of the
transmission power of the symbol overlapped in the PUCCH on the CC1
in the subframe n and the transmission power of the symbol
overlapped in the PUSCH on the CC2 in the subframe n+1 is not
higher than the maximum transmission power configured by the UE.
Then the UE sends the PUCCH on the CC1 and the PUSCH on the
CC2.
[0363] Furthermore, the embodiment of the present document further
provides an uplink signal power reduction apparatus in a carrier
aggregation system, as shown in FIG. 22, the apparatus mainly
comprises a transmission power judgment unit and a power reduction
instruction unit in the evolved NodeB, and a power reduction
execution unit in the UE, wherein:
[0364] said transmission power judgment unit is used to, when the
user equipment is configured with multiple timing advances and it
is determined that the symbols in uplink channels carried on
different carriers are not aligned in the time domain, judge
whether the symbols are overlapped on the time domain on different
carriers or not, if yes, then judge whether the sum of the
transmission power of each uplink channel of the UE exceeds the
maximum transmission power configured by said UE or not;
[0365] said power reduction instruction device is used to, if said
transmission power judgment unit determines that the sum of the
transmission power of each uplink channel of said UE exceeds the
maximum transmission power configured by the UE, instruct the UE to
reduce the transmission power of the uplink channels in which the
symbols are overlapped in the time domain on different
carriers;
[0366] said power reduction execution unit is used to, according to
the instructions from the evolved NodeB, reduce the transmission
power of the uplink channels in which the symbols are overlapped in
the time domain on different carriers.
[0367] Furthermore, said power reduction instruction unit is used
to instruct predefined rules of said UE for reducing the power;
[0368] said power reduction execution unit is used to, in
accordance with the predefined rules instructed by the power
reduction instruction unit, reduce the transmission power of the
uplink channels in which the symbols are overlapped in the time
domain on different carriers;
[0369] Wherein, said predefined rules comprise: equal-ratio
reducing the transmission power of the uplink channels on each
uplink carrier, until the transmission power of the UE does not
exceed the maximum transmission power configured by the UE; or,
according to the low to high order of the priorities of the uplink
channels, reducing the power of each uplink channel, until the
transmission power of said UE does not exceed the maximum
transmission power configured by the UE; or, only reducing the
transmission power of the symbols overlapped in different
channels.
[0370] Furthermore, said power reduction instruction unit is used
to instruct the UE the power reduction method and/or the power
reduction object;
[0371] said power reduction execution unit is used to, in
accordance with the power reduction method instructed by the power
reduction instruction unit, reduce the transmission power of said
power reduction object;
[0372] Wherein, said power reduction method comprises: equal-ratio
reducing the transmission power of each uplink channel; reducing
the transmission power of each uplink channel according to the
priorities of the uplink channels in the low to high order; said
power reduction object comprises: all uplink channels; designated
uplink channels.
[0373] Furthermore, the transmission power judgment unit is used
to, upon receiving a notification that the UE is in the power
limited state, determine that the sum of the transmission power of
each uplink channel of said UE exceeds the maximum transmission
power configured by the UE.
[0374] Furthermore, said power reduction instruction unit is used
to, by the physical layer signaling or higher-layer signaling,
instruct said UE to reduce the transmission power of the uplink
channels in which symbols are overlapped in the time domain on
different carriers.
[0375] Furthermore, the embodiment of the present document further
provides an uplink signal power reduction apparatus in the carrier
aggregation system, as shown in FIG. 23, the apparatus mainly
comprises a transmission power judgment module and a transmission
power reduction module in the UE, wherein:
[0376] Said transmission power judgment module is used to, said UE
is configured with multiple timing advances, when the symbols in
uplink channels carried on different carriers are not aligned in
the time domain, and the symbols on different carriers are
overlapped in the time domain, judge whether the sum of the
transmission power of each uplink channel of said UE exceeds the
maximum transmission power configured for said UE or not;
[0377] said transmission power reduction module is used to, if said
transmission power judgment module determines that the transmission
power of each uplink channel of said UE exceeds the maximum
transmission power configured by the UE, reduce the transmission
power of the uplink channels in which symbols are overlapped in the
time domain on different carriers according to a predefined
rule.
[0378] Furthermore, said transmission power reduction module is
used to, in accordance with the following predefined rules, reduce
the transmission power of the uplink channels in which the symbols
are overlapped in the time domain on different carriers:
[0379] equal-ratio reducing the transmission power of the uplink
channels on each uplink carrier, until the transmission power of
said UE does not exceed the maximum transmission power configured
by the UE; or
[0380] reducing the power of each uplink channel according to the
priorities of the uplink channels in the low to high order, until
the transmission power of said UE does not exceed the maximum
transmission power configured by the UE; or
[0381] only reducing the transmission power of the symbols
overlapped in different channels.
[0382] Furthermore, when said transmission power reduction module
only reduces the transmission power of the symbols overlapped in
different channels, it equal-ratio reduces the transmission power
of the overlapped symbols, or, reduces the power of the symbols
that are overlapped in different channels according to the low to
high order of the priorities of the uplink channels corresponding
to the symbols that are overlapped.
[0383] Furthermore, said transmission power reduction module is
used to, in accordance with one of the following methods, judge
whether the sum of the transmission power of each uplink channel
exceeds the maximum transmission power configured by the UE or
not:
[0384] judging whether the sum of the transmission power of the
uplink channels carried on each uplink carrier in the current
subframe exceeds the maximum transmission power configured by the
UE or not; or
[0385] judging whether the sum of the transmission power of the
uplink channels carried on each uplink carrier in the current
subframe and the transmission power of the uplink channels carried
on each uplink carrier that the next subframe is ready to send
exceeds the maximum transmission power configured by the UE or
not.
[0386] Those ordinarily skilled in the art can understand that all
or some of steps of the above-mentioned method may be completed by
the programs instructing the relevant hardware, and said programs
may be stored in a computer-readable storage medium, such as read
only memory, magnetic or optical disk. Optionally, all or part of
the steps of the above-mentioned embodiments may also be
implemented by using one or more integrated circuits. Accordingly,
each module/unit in the above-mentioned embodiment may be realized
in the form of hardware or software function module. The present
document is not limited to any specific form of hardware and
software combinations.
[0387] The above description is only preferred embodiments of the
present document, and is not intended to limit the protection scope
of the present document. According to the content of the present
document, there may be also a variety of other embodiments, and
without departing from the spirit and essence of the present
document, those skilled in the field can make all kinds of
corresponding changes and modifications in accordance with the
present document, while within the spirit and principles of the
present document, all changes, equivalent replacements and
improvements should be included within the scope of the present
document.
INDUSTRIAL APPLICABILITY
[0388] With the embodiment of the present document, the problem
that the prior art does not support the signal transmission when
the signal symbols sent on different uplink component carriers are
overlapped in the time domain in the carrier aggregation system
configured with MTA.
* * * * *