U.S. patent application number 16/346481 was filed with the patent office on 2019-12-12 for methods and devices for feeding back and configuring pilot parameters, user terminal and base station.
The applicant listed for this patent is ZTE CORPORATION. Invention is credited to Yijian CHEN, BO GAO, Chuangxin JIANG, Yu Ngok LI, Zhaohua LU.
Application Number | 20190379433 16/346481 |
Document ID | / |
Family ID | 62076638 |
Filed Date | 2019-12-12 |
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United States Patent
Application |
20190379433 |
Kind Code |
A1 |
CHEN; Yijian ; et
al. |
December 12, 2019 |
METHODS AND DEVICES FOR FEEDING BACK AND CONFIGURING PILOT
PARAMETERS, USER TERMINAL AND BASE STATION
Abstract
Provided are a method and device for feeding back a reference
signal parameter, a method and device for configuring a reference
signal parameter a user terminal and a base station. The method for
feeding back a reference signal parameter can include: determining,
by a terminal, at least one of a transmission parameter or a
reception parameter of a reference signal; and feeding back, by the
terminal, the at least one of the transmission parameter or the
reception parameter of the reference signal to a base station.
Inventors: |
CHEN; Yijian; (Shenzhen,
CN) ; LU; Zhaohua; (Shenzhen, CN) ; LI; Yu
Ngok; (Shenzhen, CN) ; JIANG; Chuangxin;
(Shenzhen, CN) ; GAO; BO; (Shenzhen, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
ZTE CORPORATION |
Shenzhen |
|
CN |
|
|
Family ID: |
62076638 |
Appl. No.: |
16/346481 |
Filed: |
November 1, 2017 |
PCT Filed: |
November 1, 2017 |
PCT NO: |
PCT/CN2017/108996 |
371 Date: |
April 30, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H04B 7/0417 20130101;
H04L 5/0048 20130101; H04B 17/24 20150115; H04B 7/0619 20130101;
H04L 5/0051 20130101 |
International
Class: |
H04B 7/0417 20060101
H04B007/0417; H04B 17/24 20060101 H04B017/24; H04B 7/06 20060101
H04B007/06; H04L 5/00 20060101 H04L005/00 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 4, 2016 |
CN |
201610963386.5 |
Claims
1. A method for feeding back a reference signal parameter,
comprising: determining, by a terminal, at least one of a
transmission parameter or a reception parameter of a reference
signal; and feeding back, by the terminal, the at least one of the
transmission parameter or the reception parameter of the reference
signal to a base station.
2. The method of claim 1, wherein when the reception parameter of
the reference signal is determined by the terminal, the reception
parameter comprises at least one of: receive antenna information,
receive port information, receive beam information or receive mode
information.
3. The method of claim 2, wherein when the transmission parameter
of the reference signal is determined by the terminal and in
condition that a type of the reference signal is a demodulation
reference signal, the transmission parameter comprises at least one
of: indication information about a number of repeated transmissions
of demodulation reference signals having same precoding; indication
information about a number of symbols for transmitting the
demodulation reference signal; indication information about a time
domain density of a resource for transmitting the demodulation
reference signal; indication information about a frequency domain
density of the resource for transmitting the demodulation reference
signal; indication information about a position of the demodulation
reference signal; or indication information about a sequence
parameter of the demodulation reference signal; wherein the
sequence parameter comprises: a sequence type, indication
information about a transmission power of the demodulation
reference signal, and indication information about a precoding
binding granularity of the demodulation reference signal.
4. The method of claim 2, wherein in condition that a type of the
reference signal is a demodulation reference signal, demodulation
reference signal resources are grouped; and wherein the feeding
back, by the terminal, the at least one of the transmission
parameter and the reception parameter of the reference signal to
the base station comprises: feeding back, by the terminal, the at
least one of the transmission parameter and the reception parameter
to each of a plurality of different demodulation reference signal
resource groups.
5. (canceled)
6. The method of claim 2, wherein in condition that a type of the
reference signal is a demodulation reference signal, the feeding
back, by the terminal, the at least one of the transmission
parameter or the reception parameter of the reference signal to the
base station comprises: feeding back, by the terminal, the at least
one of the transmission parameter or the reception parameter for
each of a plurality of types of control channel configurations.
7. The method of claim 2, wherein in condition that a type of the
reference signal is a demodulation reference signal, the feeding
back, by the terminal, the at least one of the transmission
parameter or the reception parameter of the reference signal to the
base station comprises: feeding back, by the terminal, the at least
one of the transmission parameter or the reception parameter for
each of a plurality of different transmission areas, wherein the
transmission areas are data transmission areas or control
transmission areas.
8. The method of claim 2, wherein when the transmission parameter
of the reference signal is determined by the terminal and in
condition that the reference signal is a measurement reference
signal, the transmission parameter comprises at least one of: a
number of measurement reference signal blocks to be transmitted; a
rule for transmitting the measurement reference signal blocks; a
number of time domain symbols comprised in the measurement
reference signal blocks; a number of repeated transmissions of the
measurement reference signal; indication information about
precoding corresponding to the measurement reference signal;
information about an optional precoding set corresponding to the
measurement reference signal; or a precoding/beam relationship
between a plurality of measurement reference signals.
9. The method of claim 8, wherein the number of repeated
transmissions comprises: a number of repeated transmissions of a
reference signal corresponding to a same port; or a number of
repeated transmissions of reference signals having a same
transmission mode; or a number of repeated transmissions of
reference signals having a same transmission mode in a same
reference signal resource block; or a number of repeated
transmissions of reference signal resource blocks having a same
transmission mode; or a number of repeated transmissions of a
reference signal corresponding to a same beam.
10. The method of claim 2, further comprising: in condition that
the reference signal is a measurement reference signal, feeding
back, by the terminal, the reference signal parameter for each of
P1 types of measurement reference signals, wherein P1 is an integer
greater than 1.
11. The method of claim 2, further comprising: in condition that
the reference signal is a measurement reference signal, dividing
reference signal resources into P2 groups of reference signal
resources, and feeding back, by the terminal, the reference signal
parameter for each of the P2 groups of reference signal resources,
wherein P2 is an integer greater than 1.
12. The method of claim 2, wherein when the transmission parameter
of the reference signal is determined by the terminal and in
condition that a type of the reference signal is a phase noise
compensation reference signal, the transmission parameter comprises
at least one of: indication information about a number of symbols
for transmitting the phase noise compensation reference signal;
indication information about a time domain density of a resource
for transmitting the phase noise compensation reference signal;
indication information about a frequency domain density of the
resource for transmitting the phase noise compensation reference
signal; indication information about a position of the phase noise
compensation reference signal; indication information about a
sequence parameter of the phase noise compensation reference
signal; indication information about a transmission power of the
phase noise compensation reference signal; indication information
about precoding of the phase noise compensation reference signal;
indication information about a number of precoding ports of the
phase noise compensation reference signal; or indication
information about a type of the phase noise compensation reference
signal.
13. A method for configuring a reference signal parameter,
comprising: determining, by a network side, at least one of a
transmission parameter or a reception parameter of a reference
signal; and configuring, by the network side, the at least one of
the transmission parameter or the reception parameter of the
reference signal for a terminal through downlink signaling.
14. (canceled)
15. The method of claim 13, wherein when the reception parameter of
the reference signal is determined by the network side, the
reception parameter comprises at least one of: receive antenna
information, receive port information, receive beam information or
receive mode information.
16. The method of claim 13, wherein when the transmission parameter
of the reference signal is determined by the network side and in
condition that the reference signal is a demodulation reference
signal, the transmission parameter comprises at least one of:
indication information for a zero power demodulation reference
signal, indication information about a sequence type of the
demodulation reference signal, indication information about a
number of repeated transmissions of demodulation reference signals
having same precoding, or indication information about a precoding
binding granularity of the demodulation reference signal.
17. The method of claim 13, wherein when the transmission parameter
of the reference signal is determined by the network side and in
condition that the reference signal is a measurement reference
signal, the transmission parameter comprises at least one of: a
number of measurement reference signal blocks to be transmitted; a
rule for transmitting the measurement reference signal blocks; a
number of time domain symbols comprised in the measurement
reference signal blocks; a precoding/beam relationship between a
plurality of measurement reference signals; or a number of repeated
transmissions of a reference signal corresponding to a same
port.
18. The method of claim 13, wherein when the transmission parameter
of the reference signal is determined by the network side and in
condition that the reference signal is a measurement reference
signal, the transmission parameter comprises: a number of repeated
transmissions of reference signals having a same transmission mode,
wherein the transmission mode comprises: a transmission beam, a
transmission sequence and a transmission antenna.
19. The method of claim 13, wherein in condition that the reference
signal is a measurement reference signal, diving, by a base
station, measurement reference signal resources into P2 groups of
reference signal resources, and configuring the at least one of the
transmission parameter or the reception parameter for each of the
P2 groups of reference signal resources, wherein P2 is an integer
greater than 1.
20. The method of claim 13, wherein when the transmission parameter
of the reference signal is determined by the network side, the
transmission parameter comprises at least one of: indication
information about a number of symbols for transmitting a phase
noise compensation reference signal; indication information about a
time domain density of a resource for transmitting the phase noise
compensation reference signal; indication information about a
frequency domain density of the resource for transmitting the phase
noise compensation reference signal; indication information about a
position of the phase noise compensation reference signal;
indication information about a sequence parameter of the phase
noise compensation reference signal; indication information about a
transmission power of the phase noise compensation reference
signal; or indication information about a number of precoding ports
of the phase noise compensation reference signal.
21-24. (canceled)
25. A device for configuring a reference signal parameter,
comprising: a processor; a memory, which is configured to store
programs executable by the processor; wherein the processor is
configured to execute the programs, when executed, perform the
method of claim 13.
26-27. (canceled)
28. A user terminal, comprising: a processor and an antenna system,
wherein the processor is configured to determine at least one of a
transmission parameter and a reception parameter of a reference
signal; and the antenna system is configured to feed back the at
least one of the transmission parameter and the reception parameter
of the reference signal to a base station.
29-32. (canceled)
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This is a National Stage Application, filed under 35 U.S.C.
371, of International Patent Application No. PCT/CN2017/108996,
filed on Nov. 1, 2017, which claims priority to Chinese patent
application No. 201610963386.5 filed on Nov. 4, 2016, contents of
both of which are incorporated herein by reference in their
entireties.
TECHNICAL FIELD
[0002] The present disclosure relates to, but is not limited to,
the field of wireless communications and, in particular, relates to
a method and device for feeding back a reference signal parameter,
a method and device for configuring a reference signal parameter, a
user terminal and a base station.
BACKGROUND
[0003] In a wireless communication system, a transmitting end may
use multiple antennas to get a higher transmission rate. Multiple
antennas can bring improvement of the signal-to-noise ratio and
support more spatial multiplexing layers. The multi-input
multi-output (MIMO) technology with the channel state information
(CSI) indication information (closed-loop MIMO precoding) used by
the transmitting end provides a higher capacity and is a
transmission technology used by the current mainstream 4G
standard.
[0004] In the closed-loop MIMO precoding technology, a receiving
end feeds back channel information to the transmitting end. The
transmitting end uses the transmit precoding technology according
to the obtained channel information to obtain the beamforming gain
and the spatial multiplexing gain, thereby greatly improving the
transmission performance. For single-user MIMO, the transmitting
end uses the precoding vector matched with channel feature vector
information to send the precoding. For multi-user MIMO, the
transmitting end performs efficient forming and interference
cancellation according to the channel information.
[0005] In an actual use of the MIMO technology, the involved
reference signal includes: a measurement reference signal, a
demodulation reference signal and a phase noise compensation
reference signal.
[0006] 1) The measurement reference signal is mainly used for
measurement and feedback of the receiving end.
[0007] The following types of measurement reference signals are
defined in 4G LTE-advanced: downlink channel state information
reference signal (CSI-RS); and
[0008] uplink sounding reference signal (SRS).
[0009] The two types of reference signals are respectively used for
downlink and uplink channel information CSI measurement and may be
transmitted in a periodic or aperiodic mode. For specific
configuration and usage, reference may be made to 3GPP technical
specifications, TS 36.211 and TS36.213. Measurement reference
signals for multiple ports are supported in both the downlink and
the uplink.
[0010] Due to the introduction of more antennas and more service
beams in 5G, these reference signals may have some new designs, for
example, may be transmitted in the manner of beam scanning, and the
transmitting configuration will be more diverse.
[0011] In addition, other types of measurement reference signals
further exist due to other measurement requirements, such as
measurement of the receive signal quality of some cells or sectors
related to mobility management, measurement of large scale
properties, etc. These reference signals are also a type of
measurement reference signal. The above measurement functions may
be implemented through the CSI-RS or the SRS. Some other reference
signals, such as a beam reference signal (BRS) or other measurement
reference signals with other names may also be additionally
transmitted.
[0012] 2) The demodulation reference signal includes a data
demodulation reference signal and a control demodulation reference
signal.
[0013] When the channel information is obtained, the transmitting
end may perform pre-coded data or control transmission according to
the channel information, and may use one or more layers of
multi-antenna transmission technology. Generally, each layer has a
corresponding demodulation reference signal (DMRS), and the data or
control information is demodulated by using the channel estimated
by the demodulation reference signal and combining the received
signal. The demodulation reference signal is divided into an uplink
demodulation reference signal (UL DMRS) and a downlink demodulation
reference signal (DL DMRS) respectively for demodulation of
downlink control or data, and demodulation of uplink control or
data.
[0014] 3) The type of phase noise compensation reference signal
(PNCRS) is generally used for phase compensation when the phase
noise is relatively large, may also be used for frequency offset
tracking, and therefore may also be considered as a frequency
offset estimation reference signal. The type of reference signal
may appear alone or as part of the DMRS. When used for data
demodulation, the type of reference signal may also be understood
as a special demodulation reference signal. If the type of
reference signal is defined on the transmission layer and each
layer corresponds to a port of a phase noise supplemental reference
signal, the type of reference signal may be considered as part of
the DMRS.
SUMMARY
[0015] A summary of the subject matter is described hereinafter in
detail. This summary is not intended to limit the scope of the
claims.
[0016] A method and device for feeding back a reference signal
parameter, a method and device for configuring a reference signal
parameter, a user terminal and a base station are provided in the
embodiments of the present disclosure.
[0017] The embodiments are as follows.
[0018] The method for feeding back a reference signal parameter
includes steps described below.
[0019] A terminal determines at least one of a transmission
parameter or a reception parameter of a reference signal.
[0020] The terminal feeds back the at least one of the transmission
parameter or the reception parameter of the reference signal to a
base station.
[0021] The method for configuring a reference signal parameter
includes steps described below.
[0022] A network side determines at least one of a transmission
parameter or a reception parameter of a reference signal.
[0023] The network side configures the at least one of the
transmission parameter or the reception parameter of the reference
signal for a terminal through downlink signaling.
[0024] The device for feeding back a reference signal parameter
includes: a determining unit and a transmitting unit.
[0025] The determining unit is configured to determine at least one
of a transmission parameter or a reception parameter of a reference
signal.
[0026] The transmitting unit is configured to feed back the at
least one of the transmission parameter or the reception parameter
of the reference signal to a base station. A type of the reference
signal is at least one of: a demodulation reference signal, a
measurement reference signal or a phase noise compensation
reference signal.
[0027] The device for configuring a reference signal parameter
includes: a determining unit and a configuration unit.
[0028] The determining unit is configured to determine at least one
of a transmission parameter or a reception parameter of a reference
signal.
[0029] The configuration unit is configured to configure the at
least one of the transmission parameter or the reception parameter
of the reference signal for a terminal through downlink signaling.
A type of the reference signal is at least one of: a demodulation
reference signal, a measurement reference signal or a phase noise
compensation reference signal.
[0030] The user terminal includes a processor and an antenna
system.
[0031] The processor is configured to determine at least one of a
transmission parameter or a reception parameter of a reference
signal.
[0032] The antenna system is configured to feed back the at least
one of the transmission parameter or the reception parameter of the
reference signal to a base station.
[0033] A type of the reference signal is at least one of: a
demodulation reference signal, a measurement reference signal or a
phase noise compensation reference signal.
[0034] The base station includes a processor and an antenna
system.
[0035] The processor is configured to determine at least one of a
transmission parameter or a reception parameter of a reference
signal.
[0036] The antenna system is configured to configure the at least
one of the transmission parameter or the reception parameter of the
reference signal for a terminal through downlink signaling.
[0037] In the embodiments of the pretransmitted disclosure, the
terminal determines at least one of the transmission parameter or
the reception parameter of the reference signal and feeds back the
at least one of the transmission parameter or the reception
parameter of the reference signal to a base station. The base
station can refer to the UE's recommendation for more reasonable
reference signal configuration, so that a good compromise between
reference signal resource utilization and performance is achieved
for different UEs.
BRIEF DESCRIPTION OF DRAWINGS
[0038] FIG. 1 is a flowchart of a method for feeding back a
reference signal parameter according to an embodiment of the
present disclosure;
[0039] FIG. 2 is a flowchart of a method for configuring a
reference signal parameter according to an embodiment of the
present disclosure;
[0040] FIG. 3 is a schematic diagram of a correspondence between
precoding and a reference signal according to an embodiment of the
present disclosure;
[0041] FIG. 4 is a schematic diagram illustrating a mode of
transmitting a measurement reference signal according to an
embodiment of the present disclosure;
[0042] FIG. 5 is a schematic diagram illustrating a second mode of
transmitting a measurement reference signal according to an
embodiment of the present disclosure;
[0043] FIG. 6 is a schematic diagram illustrating a third mode of
transmitting a measurement reference signal according to an
embodiment of the present disclosure;
[0044] FIG. 7 is a structural diagram of a device for feeding back
a reference signal parameter according to an embodiment of the
present disclosure;
[0045] FIG. 8 is a structural diagram for a device for configuring
a reference signal parameter according to an embodiment of the
present disclosure;
[0046] FIG. 9 is a structural diagram of a user terminal according
to an embodiment of the present disclosure; and
[0047] FIG. 10 is a structural diagram of a base station according
to an embodiment of the present disclosure.
DETAILED DESCRIPTION
[0048] In condition that the reference signal configuration is
determined by a base station and then notified to a terminal and
since these reference signals have been designed to take into
account the measurement and demodulation requirements of the
terminal with the mainstream configuration in the typical scenario,
the base station can decide which configuration to use after a
simple judgment. Such method may be sufficient in 4G, while
differences in the following aspects exist in 5G. The difference
between terminals becomes larger, for example, the number of
receive antennas of the terminal increases, and the configuration
is greatly different; the application scenario of 5G is more
complicated, and a wider communication frequency, the moving speed,
more types of services need to be considered; the difference
between requirements from terminals becomes larger; and the same
reference signal may need to implement more functions. Therefore,
the configuration of the reference signal in the 5G completely
determined by the base station cannot be very accurate; and the
configuration of the reference signal completely determined by the
base station results in insufficient reference signal configuration
flexibility, a good reference signal efficiency cannot be obtained,
and a good compromise between reference signal resource utilization
and performance cannot be achieved.
[0049] FIG. 1 is a flowchart of a method for feeding back a
reference signal parameter according to an embodiment of the
present disclosure. As shown in FIG. 1, the method for feeding back
a reference signal parameter according to the embodiment of the
present disclosure includes steps described below.
[0050] In a step 101, at least one of a transmission parameter or a
reception parameter of a reference signal is determined by a
terminal.
[0051] In a step 102, the terminal feeds back the at least one of
the transmission parameter or the reception parameter of the
reference signal to a base station.
[0052] A type of the reference signal includes at least one of: a
demodulation reference signal, a measurement reference signal or a
phase noise compensation reference signal.
[0053] The reception parameter includes one or more of: receive
antenna information, receive port information, receive beam
information and receive mode information.
[0054] When a type of the reference signal is the demodulation
reference signal, the transmission parameter includes one or more
of: indication information about the number of repeated
transmissions of demodulation reference signals having the same
precoding; indication information about the number of symbols for
transmitting the demodulation reference signal;
[0055] indication information about a time domain density of a
resource for transmitting the demodulation reference signal;
[0056] indication information about a frequency domain density of
the resource for transmitting the demodulation reference
signal;
[0057] indication information about a position of the demodulation
reference signal; and
[0058] indication information about a sequence parameter of the
demodulation reference signal.
[0059] Optionally, the sequence parameter includes: a sequence
type;
[0060] indication information about a transmission power of the
demodulation reference signal; and
[0061] indication information about a precoding binding granularity
of the demodulation reference signal.
[0062] In condition that the type of the reference signal is the
demodulation reference signal, demodulation reference signal
resources are grouped, and the terminal feeds back the at least one
of the transmission parameter or the reception parameter to each of
a plurality of different reference signal resource groups. The
resources are at least one of time domain resources, frequency
domain resources, port resources, and beam resources.
[0063] In condition that a type of the reference signal is a
demodulation reference signal, the terminal agrees on with a base
station or the base station configures a set having X1 sets of
demodulation reference signal parameters, and the terminal selects
Y1 sets of demodulation reference signal parameters from the set
having X1 sets of demodulation reference signal parameters and
feeds back corresponding indication information to the base
station. Where Y1 is less than or equal to X1.
[0064] When the type of the reference signal is the demodulation
reference signal, the terminal feeds back the at least one of the
transmission parameter or the reception parameter for each of a
plurality of types of control channel configurations.
[0065] In condition that the type of the reference signal is the
demodulation reference signal, the terminal feeds back the at least
one of the transmission parameter or the reception parameter for
each of a plurality of different transmission areas. The
transmission areas are data transmission areas or control
transmission areas.
[0066] When the type of the reference signal is a measurement
reference signal, the transmission parameter includes at least one
of:
[0067] the number of measurement reference signal blocks to be
transmitted;
[0068] a rule for transmitting the measurement reference signal
blocks;
[0069] the number of time domain symbols included in the
measurement reference signal blocks;
[0070] the number of repeated transmissions of the measurement
reference signal;
[0071] indication information about precoding corresponding to the
measurement reference signal;
[0072] information about an optional precoding set corresponding to
the measurement reference signal; or
[0073] a precoding/beam relationship between a plurality of
measurement reference signals.
[0074] The number of repeated transmissions includes: the number of
repeated transmissions of a reference signal corresponding to a
same port; or the number of repeated transmissions of reference
signals having a same transmission mode; or the number of repeated
transmissions of reference signals having a same transmission mode
in a same reference signal resource block; or the number of
repeated transmissions of reference signal resource blocks having a
same transmission mode; or a number of repeated transmissions of a
reference signal corresponding to a same beam.
[0075] When the type of the reference signal is the measurement
reference signal, the terminal feeds back the reference signal
parameter for each of P1 types of measurement reference signals. P1
is an integer greater than 1.
[0076] When the type of the reference signal is the measurement
reference signal, reference signal resources are divided into P2
groups of reference signal resources, and the terminal feeds back
the reference signal parameter for each of the P2 groups of
reference signal resources. P2 is an integer greater than 1.
[0077] When the type of the reference signal is a phase noise
compensation reference signal, the transmission parameter includes
one or more of:
[0078] indication information about the number of symbols for
transmitting a phase noise compensation reference signal;
[0079] indication information about a time domain density of a
resource for transmitting the phase noise compensation reference
signal;
[0080] indication information about a frequency domain density of
the resource for transmitting the phase noise compensation
reference signal;
[0081] indication information about a position of the phase noise
compensation reference signal;
[0082] indication information about a sequence parameter of the
phase noise compensation reference signal;
[0083] indication information about a transmission power of the
phase noise compensation reference signal; and
[0084] indication information about precoding of the phase noise
compensation reference signal;
[0085] indication information about the number of precoding ports
of the phase noise compensation reference signal; and
[0086] indication information about a type of the phase noise
compensation reference signal.
[0087] FIG. 2 is a flowchart of a method for configuring a
reference signal parameter according to an embodiment of the
present disclosure. As shown in FIG. 2, the method for configuring
a reference signal parameter according to the embodiment of the
present disclosure includes steps described below.
[0088] In a step 201, a network side determines at least one of a
transmission parameter or a reception parameter of a reference
signal.
[0089] In a step 202, the network side configures the at least one
of the transmission parameter or the reception parameter of the
reference signal for a terminal through downlink signaling.
[0090] A type of the reference signal is at least one of: a
demodulation reference signal, a measurement reference signal or a
phase noise compensation reference signal.
[0091] In the embodiment of the present disclosure, the network
side is described by using a base station as an example, and
another network element on the network side may also be used.
[0092] The base station configures the at least one of the
transmission parameter or the reception parameter of the reference
signal for a terminal through downlink signaling.
[0093] The base station configures the at least one of the
transmission parameter or the reception parameter for each of a
plurality of different transmission areas. The transmission areas
are data transmission areas or control transmission areas.
[0094] The reception parameter includes one or more of: receive
antenna information, receive port information, receive beam
information and receive mode information.
[0095] When the reference signal is the demodulation reference
signal, the transmission parameter includes indication information
for a zero power demodulation reference signal.
[0096] When the reference signal is the demodulation reference
signal, the transmission parameter includes indication information
about a sequence type of the demodulation reference signal.
[0097] When the reference signal is the demodulation reference
signal, the transmission parameter includes indication information
about the number of repeated transmissions of demodulation
reference signals having the same precoding.
[0098] When the reference signal is the demodulation reference
signal, the transmission parameter includes indication information
about a precoding binding granularity of the demodulation reference
signal.
[0099] Demodulation reference signal resources are grouped, and the
terminal feeds back the at least one of the transmission parameter
or the reception parameter to each of a plurality of different
demodulation reference signal resource groups. The resources are at
least one of time domain resources, frequency domain resources,
port resources, and beam resources.
[0100] When the reference signal is the measurement reference
signal, the transmission parameter includes the number of
measurement reference signal blocks to be transmitted.
[0101] When the reference signal is the measurement reference
signal, the transmission parameter includes a rule for transmitting
the measurement reference signal blocks.
[0102] When the reference signal is the measurement reference
signal, the transmission parameter includes the number of time
domain symbols included in the measurement reference signal
blocks.
[0103] When the reference signal is the measurement reference
signal, the transmission parameter includes a precoding/beam
relationship between a plurality of measurement reference
signals.
[0104] When the reference signal is the measurement reference
signal, the transmission parameter includes the number of repeated
transmissions of a reference signal corresponding to a same
port.
[0105] When the reference signal is the measurement reference
signal, the transmission parameter includes the number of repeated
transmissions of reference signals having a same transmission mode.
A transmission mode includes: a transmission beam, a transmission
sequence and a transmission antenna.
[0106] When the reference signal is the measurement reference
signal, a base station divides measurement reference signal
resources into P2 groups of reference signal resources, and
configures the at least one of the transmission parameter or the
reception parameter for each of the P2 groups of reference signal
resources. P2 is an integer greater than 1.
[0107] When the reference signal is a phase noise compensation
reference signal, the transmission parameter includes indication
information about the number of symbols for transmitting a phase
noise compensation reference signal.
[0108] When the reference signal is the phase noise compensation
reference signal, the transmission parameter includes indication
information about a time domain density of a resource for
transmitting the phase noise compensation reference signal.
[0109] When the reference signal is the phase noise compensation
reference signal, the transmission parameter includes indication
information about a frequency domain density of the resource for
transmitting the phase noise compensation reference signal.
[0110] When the reference signal is the phase noise compensation
reference signal, the transmission parameter includes indication
information about a position of the phase noise compensation
reference signal.
[0111] When the reference signal is the phase noise compensation
reference signal, the transmission parameter includes indication
information about a sequence parameter of the phase noise
compensation reference signal.
[0112] When the reference signal is the phase noise compensation
reference signal, the transmission parameter includes indication
information about a transmission power of the phase noise
compensation reference signal.
[0113] When the reference signal is a phase noise compensation
reference signal, the transmission parameter includes indication
information about the number of precoding ports of the phase noise
compensation reference signal.
[0114] The essence of the technical solutions of the embodiments of
the present disclosure is further illustrated by specific examples
hereinafter.
EXAMPLE 1
[0115] A transmission parameter of a demodulation reference signal
is determined by a terminal and may include indication information
about a sequence parameter of the demodulation reference signal.
The sequence parameter of the demodulation reference signal may
include a type of the sequence, for example, a Zadoff-off (ZC)
sequence or a Pseudo-Noise (PN) sequence may be selected for the
DMRS. The ZC sequence may be well used for time-frequency offset
estimation. When other signals cannot be used for the
time-frequency offset estimation or cannot meet some requirements
of time-offset estimation or frequency offset estimation, or no
other available reference signal exists for performing the
time-frequency offset estimation, a base station may configure the
ZC sequence for the terminal. If the time-frequency offset
estimation information may be obtained by referring to other
signals, a simpler PN sequence may be used. The number of frequency
domain symbols that the PN sequence needs to occupy may be less,
which is more advantageous for overhead. The PN sequence is a real
sequence, which is also simpler in processing. The size of the
actual frequency offset of the UE and the distance between the
terminal and the base station needs to be considered for
determining whether to configure the ZC sequence. If performance of
the crystal oscillator of the UE is relatively good, the frequency
offset is small, the terminal is close to the base station, and the
delay is not large, a use of the PN sequence can be considered.
[0116] Correspondingly, the base station may use, by default, the
transmission parameter of the demodulation reference signal
determined by the terminal, such as the sequence parameter of the
demodulation reference signal, and the parameter does not need to
be configured again through downlink signaling. Of course, the base
station may also have the final decision, and may take into account
other factors to finally decide the sequence parameter of the
demodulation reference signal which is then configured to the
terminal. For example, the sequence is selected by furthering
considering the possibility that multiple users simultaneously
perform space division transmission, and cannot simply be
determined by the recommended parameter of the terminal.
EXAMPLE 2
[0117] A transmission parameter of a demodulation reference signal
is determined by a terminal and may include indication information
about the number of repeated transmissions of demodulation
reference signals having the same precoding. The terminal may
determine the parameter according to the configuration of a receive
beam. Since the terminal expects at this time that the demodulation
reference signals having the same precoding are repeatedly
transmitted in the time domain for blind detection of the receive
beam, the parameter is related to the setting of the receive beam.
As shown in FIG. 3, the demodulation reference signals
corresponding to the same precoding 1 are repeatedly transmitted on
M1 time domain symbols, and the demodulation reference signals
corresponding to the precoding 2 are repeatedly transmitted on M2
time domain symbols. M1 and M2 may be fed back from the terminal to
the base station. The fed-back parameter represents a configuration
value recommended by the terminal to the base station.
[0118] Merely the case of two different precodings corresponding to
the demodulation reference signals is provided herein. The case of
one precoding and the case of more precodings may be further
included. In addition, it should be noted that the repeated
transmission here is not limited to the continuous repeated
transmission. The repeated transmission refers to that demodulation
reference signals are transmitted on multiple time domain symbols
by using the same precoding. The sequence of the demodulation
reference signals is not limited. The transmission power of the
demodulation reference signals and the transmission bandwidths of
the demodulation reference signals are exactly the same.
[0119] Correspondingly, the base station may use, by default, the
transmission parameter of the demodulation reference signal
determined by the terminal, such as indication information about
the number of repeated transmissions of demodulation reference
signals having the same precoding, and the parameter does not need
to be configured again through downlink signaling. Of course, the
base station may also have the final decision, and may take into
account other factors to finally decide the indication information
about the number of repeated transmissions of demodulation
reference signals having the same precoding which is then
configured to the terminal.
EXAMPLE 3
[0120] A transmission parameter of a demodulation reference signal
is determined by a terminal and may include indication information
about a precoding binding granularity of the demodulation reference
signal. Optionally, the demodulation reference signal may be
divided into multiple subcarrier groups or multiple resource block
(RB) groups in the time domain, and the subcarrier groups or RB
groups are defined and notified to a base station.
[0121] Correspondingly, the base station may use, by default, the
transmission parameter of the demodulation reference signal
determined by the terminal, such as indication information about a
precoding binding granularity of the demodulation reference signal,
and the parameter does not need to be configured again through
downlink signaling. Of course, the base station may also have the
final decision, and may take into account other factors to finally
decide the indication information about a precoding binding
granularity of the demodulation reference signal which is then
configured to the terminal.
EXAMPLE 4
[0122] A transmission parameter of a demodulation reference signal
is determined by a terminal and may include indication information
about the number of symbols for transmitting the demodulation
reference signal or indication information about a time domain
density of a resource for transmitting the demodulation reference
signal. The number of symbols for transmitting the demodulation
reference signal or the time domain density depends on the moving
speed of the terminal. The terminal may estimate the moving speed
of the terminal itself according to a characteristic of a
measurement signal and considers in conjunction with the estimation
result of the moving speed the appropriate number of symbols for
transmitting the demodulation reference signal or density which are
then recommended to a base station.
[0123] The transmission parameter of the demodulation reference
signal is determined by the terminal and may include indication
information about a frequency domain density of the resource for
transmitting the demodulation reference signal. The indication
information about send resource frequency domain density of the
demodulation reference signal depends on the richness of the
multipath, and is related to the scenario in which the terminal is
located. The terminal may estimate the frequency domain selective
fading size, i.e., the frequency domain correlation size, according
to the characteristics of some measurement signals, and recommend
an appropriate demodulation reference signal frequency domain
density to the base station. Similarly, since the terminal is
clearer about the frequency domain correlation, the terminal may
recommend the frequency domain density of the precoding for the
demodulation reference signal to the base station. The binding
refers to that reference signals on a segment of frequency domain
resources are restricted to having the same precoding. Such method
may improve the DMRS demodulation performance but will limit the
precoding flexibility. The advantages and disadvantages of
different channels have different effects on performance. The
terminal may estimate, according to the measured channel
characteristics, the losses of performance and the gains of the
DMRS frequency domain precoding bindings caused by different
granularity bindings, thereby recommending appropriate binding
granularity.
[0124] The transmission parameter of the demodulation reference
signal is determined by the terminal and may further include
indication information about a position of transmitting the
demodulation reference signal. Information about the time-frequency
density, the number of symbols and the number of subcarriers is
implicit in the position indication information. Correspondingly,
the base station may use, by default, the transmission parameter of
the demodulation reference signal determined by the terminal, such
as indication information about the number of symbols for
transmitting the demodulation reference signal or indication
information about a time domain density of a resource for
transmitting the demodulation reference signal or indication
information about a position of transmitting the demodulation
reference signal, and the parameter does not need to be configured
again through downlink signaling. Of course, the base station may
also have the final decision, and may take into account other
factors to finally decide the indication information about the
number of symbols for transmitting the demodulation reference
signal or the indication information about a time domain density of
a resource for transmitting the demodulation reference signal or
the indication information about a position of transmitting the
demodulation reference signal which are then configured to the
terminal.
EXAMPLE 5
[0125] The transmission parameter of the demodulation reference
signal is determined by the terminal and may include indication
information about a transmission power of the demodulation
reference signal. The transmission power may be a relative value,
may be a power difference between different ports of the
demodulation reference signal, a power difference between
demodulation reference signals on different beams or having
different precodings, or a power difference between the
demodulation reference signal transmission and data information
transmission, or a power difference between the demodulation
reference signal transmission and control information
transmission.
[0126] Correspondingly, the base station may use, by default, the
transmission parameter of the demodulation reference signal
determined by the terminal, such as indication information about a
transmission power of the demodulation reference signal, and the
parameter does not need to be configured again through downlink
signaling. Of course, the base station may also have the final
decision, and may take into account other factors to finally decide
the indication information about a transmission power of the
demodulation reference signal which is then configured to the
terminal.
EXAMPLE 6
[0127] A reception parameter of a demodulation reference signal is
determined by a terminal and may include receive antenna
information of the demodulation reference signal, receive port
information of the demodulation reference signal, receive beam
information of the demodulation reference signal and receive mode
information of the demodulation reference signal. When the
receiving end has multiple receive antennas, the terminal may
inform the base station of the receive antenna to be used for
receiving the demodulation reference signal. When the receiving end
has multiple receive ports, the terminal may inform the base
station the receive port to be used for receiving the demodulation
reference signal. When the receiving end has multiple receive
beams, the terminal may inform the base station the receive beam to
be used for receiving the demodulation reference signal. When the
receiving end has multiple receive modes, the terminal may inform
the base station of the to-be-used mode of receiving the
demodulation reference signal.
[0128] In condition that multiple demodulation reference signal
resource groups exist, the terminal may feed back the corresponding
reception parameter of the demodulation reference signal to each of
the multiple demodulation reference signal resource groups.
[0129] Correspondingly, the base station may use, by default, the
reception parameter of the demodulation reference signal determined
by the terminal, such as the receive antenna information of the
demodulation reference signal, the receive port information of the
demodulation reference signal, the receive beam information of the
demodulation reference signal and the receive mode information of
the demodulation reference signal, and the parameter does not need
to be configured again through downlink signaling. Of course, the
base station may also have the final decision, and may take into
account other factors to finally decide the receive antenna
information of the demodulation reference signal, the receive port
information of the demodulation reference signal, the receive beam
information of the demodulation reference signal and the receive
mode information of the demodulation reference signal which are
then configured to the terminal.
[0130] In condition that multiple demodulation reference signal
resource groups exist, the base station may configure the
corresponding reception parameter of the demodulation reference
signal to each of the multiple demodulation reference signal
resource groups.
EXAMPLE 7
[0131] The base station agrees on with the terminal agree on a set
having X1 sets of demodulation reference signal parameters in which
one or more types of one or more types parameters mentioned in the
foregoing embodiments are included. A difference exists in the
value of one or more parameters between every two sets of the set
having X1 sets of demodulation reference signal parameters. The
terminal selects Y1 sets of demodulation reference signal
parameters from the set having X1 sets of demodulation reference
signal parameters and feeds back the corresponding indication
information to the base station. Y1 is a positive integer less than
or equal to X1.
EXAMPLE 8
[0132] A terminal may group the demodulation reference signal
resources, and feeds back at least one of some of the transmission
and reception parameters mentioned in the foregoing embodiments for
each of the plurality of different demodulation reference signal
resource groups. Multiple modes of grouping are provided. One mode
is to group, according to the ports, into multiple demodulation
reference signal port groups, for example, different ports are
grouped into different groups, and of course, multiple ports may be
included in one group. Another mode is to group, according to time
domain symbols, the time domain symbols on which the demodulation
reference signals are located into a plurality of symbol groups.
Grouping may also be performed in the frequency domain, for
example, multiple segments of frequency domain resources are
divided into, and the demodulation reference signals on each
segment of frequency domain resources are in a group. Or
demodulation reference signals transmitted on different beams are
divided into different groups. Then the terminal feeds back the
reference signal parameter for each group of demodulation reference
signals.
[0133] Correspondingly, the base station may also group the
demodulation reference signal resources, and configures at least
one of some of the send and reception parameters mentioned in the
foregoing embodiments for each of a plurality of different resource
groups. The base station and the terminal may use the same mode of
grouping, and may also use a separate mode of grouping.
EXAMPLE 9
[0134] Multiple types of control channels can exist in the uplink
or downlink. Different control channels have different transmission
parameters. Some control channels have good robustness and some
control channels have high transmission efficiency. The terminal
may configure at least one of the transmission parameter or the
reception parameter for each of the multiple types of control
channels.
[0135] Multiple transmission areas may exist in the uplink or
downlink control channel or in the uplink or downlink data channel.
In this case, the terminal feeds back at least one of the
transmission parameter or the reception parameter for each of the
multiple different transmission areas.
Example 10
[0136] The uplink and downlink measurement reference signals are
transmitted in multiple modes, and one mode of transmitting the
measurement reference signal is as shown in FIG. 4.
[0137] In the above mode, M different beams may be transmitted on
each scanning block, and M beams may occupy different time domain
symbols. The receiving end may perform measurement and select the
best beam. Since the receiving end may also have multiple antennas
and multiple receive beams may be formed, the transmitting end may
periodically send these scanning blocks, or send N scanning blocks
for multiple times in succession, so that the receiving end
performs measurement on the quality of transmission beams
corresponding to different receive beams. It should be noted that
although the transmission beams in every scanning block are the
same in the given example herein, a case where the transmission
beams in every scanning block are not identical also exists. The
numbers of symbols and the numbers of beams transmitted in the
measurement reference signal blocks may also be different.
[0138] In addition to the above mode, another transmission case is
described as shown in FIG. 5. Multiple same transmission beams are
included in one scanning block, and different scanning blocks
correspond to different transmission beams. The receiving end may
also complete measurement and selection of the receive and
transmission beams.
[0139] As shown in FIG. 6, another mode of merging is further
provided. Multiple beams are transmitted in one scanning block, and
each beam may be repeated for multiple times.
[0140] Transmission of the measurement reference signal mentioned
above is merely transmission at one port. A beam may be changed on
a symbol in a different time domain for a port and a different beam
may be transmitted. In fact, existence of multiple ports at the
same time on a time domain symbol may also be included, and each
port may correspond to a transmit-antenna channel. On the same time
domain symbol, beams in the same direction or in different
directions may be transmitted on each antenna channel beams.
[0141] For the above transmitting modes, different modes correspond
to different transmitting rules, and the terminal may determine the
transmitting rule of the measurement reference signal block
according to its own capability of switching of the transmission
beam or the receive beam, and feeds back the transmitting rule to
the base station. Correspondingly, the base station may use, by
default, the transmission parameter of the measurement reference
signal determined by the terminal, such as a rule for transmitting
a measurement reference signal block, and the parameter does not
need to be configured again through downlink signaling. Of course,
the base station may also have the final decision, and may take
into account other factors to finally decide the rule for
transmitting a measurement reference signal block which is then
configured to the terminal.
[0142] The number of time domain symbols included in the
measurement reference signal block may also be determined by the
terminal and fed back to the base station. The number of time
domain symbols generally implies setting information of the number
of receive beams or the number of transmission beams. The terminal
is clearer about its own beam setting. Correspondingly, the base
station may use, by default, the transmission parameter of the
measurement reference signal determined by the terminal, such as
the number of time domain symbols included in the measurement
reference signal block, and the parameter does not need to be
configured again through downlink signaling. Of course, the base
station may also have the final decision, and may take into account
other factors to finally decide the number of time domain symbols
included in the measurement reference signal block which is then
configured to the terminal.
[0143] The transmission parameter of the measurement reference
signal is determined by the terminal, and may include the number of
measurement reference signal blocks to be transmitted. The number
of measurement reference signal blocks to be transmitted also
implies setting information of the number of receive beams or the
number of transmission beams. Since the terminal is relatively
clear about the number of receive or transmission beams that the
terminal expects to train, a parameter of the number of scanning
blocks to be transmitted, which may also be referred to as the
number of measurement reference signal blocks to be transmitted,
may be transmitted to the base station. Correspondingly, the base
station may use, by default, the transmission parameter of the
measurement reference signal determined by the terminal, such as
the number of measurement reference signal blocks to be
transmitted, and the parameter does not need to be configured again
through downlink signaling. Of course, the base station may also
have the final decision, and may take into account other factors to
finally decide the number of measurement reference signal blocks to
be transmitted which is then configured to the terminal.
[0144] In addition to the above information, the number of repeated
transmissions of the measurement reference signal may also be
determined by the terminal and includes: the number of repeated
transmissions of a reference signal corresponding to a same port;
or the number of repeated transmissions of reference signals having
a same transmission mode; or the number of repeated transmissions
of reference signals transmitted in the same mode in a same
reference signal resource block; or the number of repeated
transmissions of reference signal resource blocks having a same
transmission mode; or the number of repeated transmissions of a
reference signal corresponding to a same beam. Correspondingly, the
base station may use, by default, the transmission parameter of the
measurement reference signal determined by the terminal, such as
the number of repeated transmissions of the measurement reference
signal, and the parameter does not need to be configured again
through downlink signaling. Of course, the base station may also
have the final decision, and may take into account other factors to
finally decide the number of repeated transmissions of the
measurement reference signal which is then configured to the
terminal.
EXAMPLE 11
[0145] A transmission parameter of a measurement reference signal
is determined by a terminal and may be indication information about
precoding corresponding to the measurement reference signal. The
information is used for indicating the precoding of the measurement
reference signal, that is, the mode of forming a beam.
Correspondingly, a base station may use, by default, the
transmission parameter of the measurement reference signal
determined by the terminal, such as the precoding corresponding to
the measurement reference signal, and the parameter does not need
to be configured again through downlink signaling. Of course, the
base station may also have the final decision, and may take into
account other factors to finally decide the precoding corresponding
to the measurement reference signal which is then configured to the
terminal.
[0146] A set of candidate precodings and an optional precoding set
corresponding to the measurement reference signal may also be
determined by the terminal and fed back to the base station, and
the base station may select precoding from the set for beam
generation. Correspondingly, the base station selects the precoding
corresponding to the measurement reference signal which is then
configured to the terminal.
[0147] The terminal may also feed back a binding relationship of
precodings or beams in the resource block of the measurement
reference signal. For example, when a certain beam is transmitted,
multiple time domain symbols or frequency domain resources need to
be bound. Correspondingly, the base station may use, by default,
the transmission parameter of the measurement reference signal
determined by the terminal, such as the binding relationship of
precodings or beams, and the parameter does not need to be
configured again through downlink signaling. Of course, the base
station may also have the final decision, and may take into account
other factors to finally decide the binding relationship of
precodings or beams which is then configured to the terminal.
EXAMPLE 12
[0148] A reception parameter of a measurement reference signal is
determined by a terminal and may include receive antenna
information of the measurement reference signal, receive port
information of the measurement reference signal, receive beam
information of the measurement reference signal and receive mode
information of the measurement reference signal. When the receiving
end has multiple receive antennas, the terminal may inform the base
station of the receive antenna to be used for receiving the
measurement reference signal. When the receiving end has multiple
receive ports, the terminal may inform the base station the receive
port to be used for receiving the measurement reference signal.
When the receiving end has multiple receive beams, the terminal may
inform the base station the receive beam to be used for receiving
the measurement reference signal. When the receiving end has
multiple receive modes, the terminal may inform the base station of
the to-be-used mode of receiving the measurement reference
signal.
[0149] In condition that multiple sets of measurement reference
signals exist, the terminal may feed back the corresponding
reception parameter of the measurement reference signal to each of
the multiple sets of measurement reference signals.
[0150] Correspondingly, the base station may use, by default, the
reception parameter of the measurement reference signal determined
by the terminal, such as the receive antenna information of the
measurement reference signal, the receive port information of the
measurement reference signal, the receive beam information of the
measurement reference signal and the receive mode information of
the measurement reference signal, and the parameter does not need
to be configured again through downlink signaling. Of course, the
base station may also have the final decision, and may take into
account other factors to finally decide the receive antenna
information of the measurement reference signal, the receive port
information of the measurement reference signal, the receive beam
information of the measurement reference signal and the receive
mode information of the measurement reference signal which are then
configured to the terminal.
[0151] In condition that multiple sets of measurement reference
signals exist, the base station may configure the corresponding
reception parameter of the measurement reference signal to each of
the multiple sets of measurement reference signals.
EXAMPLE 13
[0152] When multiple types of measurement reference signals exist,
the multiple types of measurement reference signals are divided
into P1 groups. The terminal feeds back the reference signal
parameter, including at least one of a transmission parameter or a
reception parameter, for each of the P1 groups of measurement
reference signals. P1 is an integer greater than 1.
[0153] When multiple sets of measurement reference signals exist,
the multiple sets of measurement reference signals are divided into
P2 groups of reference signal resources. The terminal feeds back
the reference signal parameter, including at least one of a
transmission parameter or a reception parameter, for each of the P2
groups of measurement reference signals. P2 is an integer greater
than 1.
EXAMPLE 14
[0154] A transmission parameter of a phase noise compensation
reference signal is determined by a terminal and may include
indication information about the number of symbols for transmitting
the phase noise compensation reference signal, such as the number
of occupied symbols in one subframe or the number of occupied
symbols in one slot. Correspondingly, the base station may use, by
default, the transmission parameter of the phase noise compensation
reference signal determined by the terminal, such as the indication
information about the number of symbols for transmitting the phase
noise compensation reference signal, and the parameter does not
need to be configured again through downlink signaling. Of course,
the base station may also have the final decision, and may take
into account other factors to finally decide the indication
information about the number of symbols for transmitting the phase
noise compensation reference signal which is then configured to the
terminal.
EXAMPLE 15
[0155] A transmission parameter of a phase noise compensation
reference signal is determined by a terminal and may include
indication information about a time domain density of a resource
for transmitting the phase noise compensation reference signal.
Correspondingly, the base station may use, by default, the
transmission parameter of the phase noise compensation reference
signal determined by the terminal, such as the indication
information about a time domain density of a resource for
transmitting the phase noise compensation reference signal, and the
parameter does not need to be configured again through downlink
signaling. Of course, the base station may also have the final
decision, and may take into account other factors to finally decide
the indication information about a time domain density of a
resource for transmitting the phase noise compensation reference
signal which is then configured to the terminal.
EXAMPLE 16
[0156] A transmission parameter of a phase noise compensation
reference signal is determined by a terminal and may include
indication information about a frequency domain density of a
resource for transmitting the phase noise compensation reference
signal, such as an interval between phase noise compensation
reference signals in the frequency domain. Correspondingly, the
base station may use, by default, the transmission parameter of the
phase noise compensation reference signal determined by the
terminal, such as the indication information about a frequency
domain density of a resource for transmitting the phase noise
compensation reference signal, and the parameter does not need to
be configured again through downlink signaling. Of course, the base
station may also have the final decision, and may take into account
other factors to finally decide the indication information about a
frequency domain density of a resource for transmitting the phase
noise compensation reference signal which is then configured to the
terminal.
EXAMPLE 17
[0157] A transmission parameter of a phase noise compensation
reference signal is determined by a terminal and may include
indication information about a position of the phase noise
compensation reference signal, such as a pattern of the phase noise
compensation reference signal. Correspondingly, the base station
may use, by default, the transmission parameter of the phase noise
compensation reference signal determined by the terminal, such as
the indication information about a position of the phase noise
compensation reference signal, and the parameter does not need to
be configured again through downlink signaling. Of course, the base
station may also have the final decision, and may take into account
other factors to finally decide the indication information about a
position of the phase noise compensation reference signal which is
then configured to the terminal.
EXAMPLE 18
[0158] A transmission parameter of a phase noise compensation
reference signal is determined by a terminal and may include
indication information about a sequence parameter of the phase
noise compensation reference signal, such as indication of a type
of a sequence and indication of an initialization parameter of the
sequence. Correspondingly, the base station may use, by default,
the transmission parameter of the phase noise compensation
reference signal determined by the terminal, such as the indication
information about a sequence parameter of the phase noise
compensation reference signal, and the parameter does not need to
be configured again through downlink signaling. Of course, the base
station may also have the final decision, and may take into account
other factors to finally decide the indication information about a
sequence parameter of the phase noise compensation reference signal
which is then configured to the terminal.
EXAMPLE 19
[0159] A transmission parameter of a phase noise compensation
reference signal is determined by a terminal and may include
indication information about a transmission power of the phase
noise compensation reference signal, such as an absolute value of
the transmission power, or a power offset relative to the
demodulation reference signal, or a power offset relative to the
data, or a power offset relative to the synchronization signal, or
a power offset relative to the control channel, or a power offset
relative to the measurement reference signal etc. Correspondingly,
the base station may use, by default, the transmission parameter of
the phase noise compensation reference signal determined by the
terminal, such as the indication information about a sequence
parameter of the phase noise compensation reference signal, and the
parameter does not need to be configured again through downlink
signaling. Of course, the base station may also have the final
decision, and may take into account other factors to finally decide
the indication information about a sequence parameter of the phase
noise compensation reference signal which is then configured to the
terminal.
EXAMPLE 20
[0160] A reception parameter of a phase noise compensation
reference signal is determined by a terminal and may include
receive antenna information of the phase noise compensation
reference signal, receive port information of the phase noise
compensation reference signal, receive beam information of the
phase noise compensation reference signal and receive mode
information of the phase noise compensation reference signal. When
the receiving end has multiple receive antennas, the terminal may
inform the base station of the receive antenna to be used for
receiving the phase noise compensation reference signal. When the
receiving end has multiple receive ports, the terminal may inform
the base station the receive port to be used for receiving the
phase noise compensation reference signal. When the receiving end
has multiple receive beams, the terminal may inform the base
station the receive beam to be used for receiving phase noise
compensation reference signal. When the receiving end has multiple
receive modes, the terminal may inform the base station of the
to-be-used mode of receiving the phase noise compensation reference
signal.
[0161] If multiple sets of phase noise compensation reference
signals exist, the terminal may feed back the corresponding
reception parameter of the phase noise compensation reference
signal to each of the multiple sets of phase noise compensation
reference signals.
[0162] Correspondingly, the base station may use, by default, the
reception parameter of the phase noise compensation reference
signal determined by the terminal, such as the receive antenna
information of the phase noise compensation reference signal, the
receive port information of the phase noise compensation reference
signal, the receive beam information of the phase noise
compensation reference signal and the receive mode information of
the phase noise compensation reference signal, and the parameter
does not need to be configured again through downlink signaling. Of
course, the base station may also have the final decision, and may
take into account other factors to finally decide the receive
antenna information of the phase noise compensation reference
signal, the receive port information of the phase noise
compensation reference signal, the receive beam information of the
phase noise compensation reference signal and the receive mode
information of the phase noise compensation reference signal which
are then configured to the terminal.
[0163] In condition that multiple sets of phase noise compensation
reference signals exist, the base station may configure the
corresponding reception parameter of the phase noise compensation
reference signal to each of the multiple sets of phase noise
compensation reference signals.
[0164] FIG. 7 is a structural diagram of a device for feeding back
a reference signal parameter according to an embodiment of the
present disclosure. As shown in FIG. 7, the device for feeding back
a reference signal parameter according to the embodiment of the
present disclosure includes a determining unit 70 and a
transmitting unit 71.
[0165] The determining unit is configured to determine at least one
of a transmission parameter or a reception parameter of a reference
signal.
[0166] The transmitting unit 71 is configured to feed back the at
least one of the transmission parameter or the reception parameter
of the reference signal to a base station. A type of the reference
signal is at least one of: a demodulation reference signal, a
measurement reference signal or a phase noise compensation
reference signal.
[0167] The reception parameter includes at least one of: receive
antenna information, receive port information, receive beam
information or receive mode information.
[0168] When the type of the reference signal is the demodulation
reference signal, the transmission parameter includes at least one
of:
[0169] indication information about the number of repeated
transmissions of demodulation reference signals having same
precoding;
[0170] indication information about the number of symbols for
transmitting the demodulation reference signal;
[0171] indication information about a time domain density of a
resource for transmitting the demodulation reference signal;
[0172] indication information about a frequency domain density of
the resource for transmitting the demodulation reference
signal;
[0173] indication information about a position of the demodulation
reference signal; or
[0174] indication information about a sequence parameter of the
demodulation reference signal.
[0175] The sequence parameter includes: a sequence type, indication
information about a transmission power of the demodulation
reference signal, and indication information about a precoding
binding granularity of the demodulation reference signal.
[0176] When the type of the reference signal is the measurement
reference signal, the transmission parameter includes at least one
of:
[0177] the number of measurement reference signal blocks to be
transmitted;
[0178] a rule for transmitting the measurement reference signal
blocks;
[0179] the number of time domain symbols comprised in the
measurement reference signal blocks;
[0180] the number of repeated transmissions of the measurement
reference signal;
[0181] indication information about precoding corresponding to the
measurement reference signal;
[0182] information about an optional precoding set corresponding to
the measurement reference signal; or
[0183] a precoding/beam relationship between a plurality of
measurement reference signals.
[0184] It should be understood by those skilled in the art that
implementation of functions of one or more units of the device for
feeding back a reference signal parameter in FIG. 7 may be
understood with reference to the relevant description of the
foregoing method for feeding back a reference signal parameter. The
determination unit or the like shown in FIG. 7 may be implemented
by a microprocessor, a field programmable gate array (FPGA), a
digital signal processor, and the like. The transmitting unit may
be implemented by an antenna system.
[0185] FIG. 8 is a structural diagram of a device for configuring a
reference signal parameter according to an embodiment of the
present disclosure. As shown in FIG. 8, the device for configuring
a reference signal parameter according to the embodiment of the
present disclosure includes a determining unit 80 and a
configuration unit 81.
[0186] The determining unit 80 is configured to determine at least
one of a transmission parameter or a reception parameter of a
reference signal.
[0187] The configuration unit 81 is configured to configure the at
least one of the transmission parameter or the reception parameter
of the reference signal for a terminal through downlink signaling.
A type of the reference signal is at least one of: a demodulation
reference signal, a measurement reference signal or a phase noise
compensation reference signal.
[0188] The configuration unit 81 is further configured to perform
an operation described below. The at least one of the transmission
parameter or the reception parameter is configured for each of a
plurality of different transmission areas. The transmission areas
are data transmission areas or control transmission areas.
[0189] The reception parameter includes at least one of: receive
antenna information, receive port information, receive beam
information or receive mode information.
[0190] It should be understood by those skilled in the art that
implementation of functions of one or more units of the device for
configuring a reference signal parameter in FIG. 8 may be
understood with reference to the relevant description of the
foregoing method for configuring a reference signal parameter. The
determination unit or the like shown in FIG. 8 may be implemented
by a microprocessor, an FPGA, a digital signal processor, and the
like. The configuration unit may be implemented by a processor or a
processing chip or the like having an antenna system.
[0191] FIG. 9 is a structural diagram of a user terminal according
to an embodiment of the present disclosure. As shown in FIG. 9, the
user terminal according to the embodiment of the present disclosure
includes a processor 90, an antenna system 91, a memory 92 and the
like.
[0192] The processor 90 is configured to determine at least one of
a transmission parameter or a reception parameter of a reference
signal.
[0193] The antenna system 91 is configured to feed back the at
least one of the transmission parameter or the reception parameter
of the reference signal to a base station.
[0194] The processor 92 stores executable instructions of the
processor 90, and is configured to support communication
applications and the like of the user equipment.
[0195] A type of the reference signal is at least one of: a
demodulation reference signal, a measurement reference signal or a
phase noise compensation reference signal.
[0196] In the embodiment of the present disclosure, when the type
of the reference signal is the demodulation reference signal, the
transmission parameter includes at least one of:
[0197] indication information about the number of repeated
transmissions of demodulation reference signals having same
precoding;
[0198] indication information about the number of symbols for
transmitting the demodulation reference signal;
[0199] indication information about a time domain density of a
resource for transmitting the demodulation reference signal;
[0200] indication information about a frequency domain density of
the resource for transmitting the demodulation reference
signal;
[0201] indication information about a position of the demodulation
reference signal; or
[0202] indication information about a sequence parameter of the
demodulation reference signal.
[0203] The sequence parameter includes: a sequence type, indication
information about a transmission power of the demodulation
reference signal, and indication information about a precoding
binding granularity of the demodulation reference signal.
[0204] In the embodiment of the present disclosure, when the
reference signal is the measurement reference signal, the
transmission parameter includes at least one of:
[0205] the number of measurement reference signal blocks to be
transmitted;
[0206] a rule for transmitting the measurement reference signal
blocks;
[0207] the number of time domain symbols included in the
measurement reference signal blocks;
[0208] the number of repeated transmissions of the measurement
reference signal;
[0209] indication information about precoding corresponding to the
measurement reference signal;
[0210] information about an optional precoding set corresponding to
the measurement reference signal; or
[0211] a precoding/beam relationship between a plurality of
measurement reference signals.
[0212] In the embodiment of the present disclosure, relevant
functions that can be performed by the user terminal may be
understood with reference to the foregoing relevant description of
the method and device for configuring a reference signal parameter,
and details are not described herein again.
[0213] FIG. 10 is a structural diagram of a base station according
to an embodiment of the present disclosure. As shown in FIG. 10,
the base station according to the embodiment of the present
disclosure includes a processor 1000, an antenna system 1001, a
processor 1002 and the like.
[0214] The processor 1000 is configured to determine at least one
of a transmission parameter or a reception parameter of a reference
signal.
[0215] The antenna system 1001 is configured to configure the at
least one of the transmission parameter or the reception parameter
of the reference signal for a terminal through downlink
signaling.
[0216] The processor 1002 stores executable instructions of the
processor 1000, and is configured to support communication
applications and the like of the user equipment.
[0217] In the embodiment of the present disclosure, a type of the
reference signal is at least one of: a demodulation reference
signal, a measurement reference signal or a phase noise
compensation reference signal.
[0218] The processor 1000 is further configured to configure at
least one of the transmission parameter or the reception parameter
for each of a plurality of different transmission areas. The
transmission areas are data transmission areas or control
transmission areas.
[0219] In the embodiment of the present disclosure, relevant
functions that can be performed by the base station may be
understood with reference to the foregoing relevant description of
the method and device for feeding back a reference signal
parameter, and details are not described herein again.
[0220] An embodiment of the present disclosure further provides a
computer-readable storage medium configured to store
computer-executable instructions which, when executed by a
processor, execute the method described in the above
embodiments.
[0221] It should be understood that the devices and the methods
disclosed in the embodiments of the present disclosure may be
implemented in other ways. The device embodiments described above
are merely illustrative. For example, the unit division is merely a
logical function division, and, in practice, the unit division may
be implemented in other ways. For example, multiple units or
components may be combined or may be integrated into another
system, or some features may be omitted or not executed. In
addition, coupling, direct coupling or communication connections
between the presented or discussed components may be indirect
coupling or communication connections, via interfaces, between
devices or units, and may be electrical, mechanical or in other
forms.
[0222] The units described above as separate components may or may
not be physically separated. Components presented as units may or
may not be physical units, that is, may be located in one place or
may be distributed over multiple network units. Part or all of
these units may be selected according to actual requirements to
achieve objects of the solutions in the embodiments of the present
disclosure.
[0223] Moreover, various function units in the embodiments of the
present disclosure may all be integrated in one processing unit, or
each unit may be used as a separate unit, or two or more units may
be integrated into one unit. The integrated function unit may be
implemented by hardware or may be implemented by hardware plus a
software function unit.
[0224] It should be understood by those skilled in the art that
functional modules/units in all or part of the steps of the method,
the system and the apparatus disclosed above may be implemented as
software, firmware, hardware and appropriate combinations thereof.
In the hardware implementation, the division of functional
modules/units mentioned in the above description may not correspond
to the division of physical units. For example, one physical
component may have several functions, or one function or step may
be executed jointly by several physical components. Some or all
components may be implemented as software executed by processors
such as digital signal processors or microcontrollers, hardware, or
integrated circuits such as application specific integrated
circuits. Such software may be distributed on a computer-readable
medium, which may include a computer storage medium (or a
non-transitory medium) and a communication medium (or a transitory
medium). As is known to those skilled in the art, the term,
computer storage medium, includes volatile and nonvolatile,
removable and non-removable media implemented in any method or
technology for storing information (such as computer-readable
instructions, data structures, program modules or other data). The
computer storage medium includes, but is not limited to, a random
access memory (RAM), a read-only memory (ROM), an electrically
erasable programmable read-only memory (EEPROM), a flash memory or
other memory technologies, a compact disc-read only memory
(CD-ROM), a digital versatile disc (DVD) or other optical disc
storage, a magnetic cassette, a magnetic tape, a magnetic disk
storage or other magnetic storage apparatuses, or any other media
used for storing desired information and accessed by a computer. In
addition, as is known to those skilled in the art, the
communication medium generally includes the computer-readable
instructions, the data structures, the program modules, or other
data in modulated data signals such as carriers or other
transmission mechanisms, and may include any information delivery
medium. The above are only specific embodiments of the present
disclosure and are not intended to limit the present disclosure. It
is easy for those skilled in the art to conceive modifications or
substitutions within the technical scope of the present disclosure.
These modifications or substitutions are within the scope of the
present disclosure. Therefore, the protection scope of the present
disclosure is subject to the scope of the appended claims.
* * * * *