U.S. patent application number 16/095121 was filed with the patent office on 2019-05-16 for delaying transmission depending on transmission type and ue processing capabilities.
The applicant listed for this patent is Telefonaktiebolaget LM Ericsson (publ). Invention is credited to Hakan Andersson, Mattias Frenne, Johan Furuskog, Niclas Wiberg, Qiang Zhang.
Application Number | 20190150007 16/095121 |
Document ID | / |
Family ID | 60116871 |
Filed Date | 2019-05-16 |
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United States Patent
Application |
20190150007 |
Kind Code |
A1 |
Frenne; Mattias ; et
al. |
May 16, 2019 |
Delaying Transmission Depending on Transmission Type and UE
Processing Capabilities
Abstract
Embodiments herein relate to a method performed by a radio
network node (12) for handling transmission of data from a wireless
device (10) in a wireless communication network (1). The radio
network node (12) determines a delay value for a transmission of
data from the wireless device (10) based on a transmission type of
data from the wireless device (10) or a capability of the wireless
device (10). The capability is related to a processing time for
processing received data from the radio network node (12), or for
processing data for transmission to the radio network node. The
radio network node further transmits an indication, to the wireless
device (10), which indication indicates the determined delay
value.
Inventors: |
Frenne; Mattias; (Uppsala,
SE) ; Andersson; Hakan; (Linkoping, SE) ;
Furuskog; Johan; (Stockholm, SE) ; Wiberg;
Niclas; (Linkoping, SE) ; Zhang; Qiang; (Taby,
SE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Telefonaktiebolaget LM Ericsson (publ) |
Stockholm |
|
SE |
|
|
Family ID: |
60116871 |
Appl. No.: |
16/095121 |
Filed: |
November 29, 2016 |
PCT Filed: |
November 29, 2016 |
PCT NO: |
PCT/SE2016/051178 |
371 Date: |
October 19, 2018 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
62324914 |
Apr 20, 2016 |
|
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|
Current U.S.
Class: |
370/252 |
Current CPC
Class: |
H04L 1/1896 20130101;
H04W 76/27 20180201; H04L 5/0055 20130101; H04W 24/08 20130101;
H04W 28/0215 20130101; H04W 72/042 20130101; H04L 1/1819 20130101;
H04W 8/22 20130101; H04W 72/1231 20130101 |
International
Class: |
H04W 24/08 20060101
H04W024/08; H04W 28/02 20060101 H04W028/02; H04W 72/12 20060101
H04W072/12; H04L 5/00 20060101 H04L005/00 |
Claims
1.-60. (canceled)
61. A method performed by a radio network node for handling
transmission of data from a wireless device in a wireless
communication network, the method comprising: determining a delay
value for a transmission of data from the wireless device based on
a transmission type of data from the wireless device or a
capability of the wireless device, which capability is related to a
processing time for processing received data from the radio network
node, or for processing data for transmission to the radio network
node; and transmitting the determined delay value to the wireless
device.
62. A method according to claim 61, wherein the determined delay
value is a default value for the wireless device to use as default
based on the transmission type of data from the wireless
device.
63. A method according to claim 61, wherein the determined delay
value is an adjusted value based on the capability of the wireless
device related to the processing time of the wireless device.
64. A method according to claim 61, further comprising receiving,
from the wireless device, a capability indication indicating the
capability related to the processing time; and wherein the
capability indication is used in the determining of the delay
value, wherein the capability indication is a smallest delay value
supported by the wireless device or is an index value indicating a
set of delay values.
65. A method according to claim 64, further comprising setting a
default value as an initial delay value for the wireless device for
a transmission of data from the wireless device based on a
transmission type of data from the wireless device; and indicating
the set default value to the wireless device with a default
indication.
66. A method according to claim 61, wherein the determined delay
value is an index value of a table mapping the index value to a
delay value.
67. A method performed by a wireless device for handling a
transmission of data in a wireless communication network, the
method comprising: receiving a delay value from a radio network
node, which delay value indicates a delay value for a transmission
of data from the wireless device based on a transmission type of
data from the wireless device or a capability of the wireless
device, which capability is related to a processing time for
processing received data from the radio network node, or for
processing data for transmission to the radio network node; and
performing a transmission of data to the radio network node delayed
based on the received delay value.
68. A method according to claim 67, further comprising
transmitting, to the radio network node, a capability indication
indicating the capability related to the processing time of the
wireless device.
69. A method according to claim 67, wherein the capability
indication is a smallest delay value supported by the wireless
device.
70. A method according to claim 67, wherein the capability
indication is an index value indicating a set of delay values.
71. A method according to claim 67, further comprising obtaining a
default indication indicating a default value of an initial delay
value for the wireless device for a transmission of data from the
wireless device, which default value is based on a transmission
type of data from the wireless device; and using the default value
when performing one or more transmissions of data to the radio
network node until receiving the delay value, and the received
delay value indicates the delay value for a transmission of data
from the wireless device based the capability of the wireless
device.
72. A method according to claim 71, wherein the obtaining the
default indication comprises obtaining a second default value of a
second initial delay value for the wireless device for a
transmission of data from the wireless device, which second default
value is based on a second transmission type of data from the
wireless device; and the using the default value comprises using
the second default value when performing one or more transmissions
of the second transmission type to the radio network node.
73. A method according to claim 67, wherein the delay value is an
index value of a table mapping the index value to a delay
value.
74. A radio network node for handling transmission of data from a
wireless device in a wireless communication network, the radio
network node comprising: a processor and a memory, the memory
comprising instructions executable by the processor whereby the
radio network node is configured to: determine a delay value for a
transmission of data from the wireless device based on a
transmission type of data from the wireless device or a capability
of the wireless device, which capability is related to a processing
time for processing received data from the radio network node, or
for processing data for transmission to the radio network node; and
to transmit the determined delay value to the wireless device.
75. A radio network node according to claim 74, wherein the
determined delay value is a default value for the wireless device
to use as default based on the transmission type of data from the
wireless device.
76. A radio network node according to claim 74, wherein the
determined delay value is an adjusted value based on a capability
of the wireless device related to the processing time of the
wireless device.
77. A radio network node according to claim 74, further configured
to: receive, from the wireless device, a capability indication
indicating the capability related to the processing time of the
wireless device; and determine the delay value based on the
received capability indication, wherein the capability indication
is a smallest delay value supported by the wireless device or is an
index value indicating a set of delay values.
78. A radio network node according to claim 77, further being
configured to set a default value as an initial delay value for the
wireless device for a transmission of data from the wireless device
based on a transmission type of data from the wireless device; and
to indicate the set default value to the wireless device with a
default indication.
79. A radio network node according to claim 74, wherein the
determined delay value is an index value of a table mapping the
index value to a delay value.
80. A wireless device for handling a transmission of data in a
wireless communication network, the wireless device comprising: a
processor and a memory, the memory comprising instructions
executable by the processor whereby the wireless device is
configured to: receive a delay value from a radio network node,
which delay value indicates a delay value for a transmission of
data from the wireless device based on a transmission type of data
from the wireless device or a capability of the wireless device,
which capability is related to a processing time for processing
received data from the radio network node, or for processing data
for transmission to the radio network node; and to perform a
transmission of data to the radio network node delayed based on the
received delay value.
81. A wireless device according to claim 80, further configured to
transmit, to the radio network node, a capability indication
indicating the capability related to the processing time of the
wireless device.
82. A wireless device according to claim 81, wherein the capability
indication is a smallest delay value supported by the wireless
device.
83. A wireless device according to claim 81, wherein the capability
indication is an index value indicating a set of delay values.
84. A wireless device according to claim 81, further configured to
obtain a default indication indicating a default value of an
initial delay value for the wireless device for a transmission of
data from the wireless device, which default value is based on a
transmission type of data from the wireless device; use the default
value when performing one or more transmissions of data to the
radio network node until receiving the delay value, and the
received delay value indicates the delay value for a transmission
of data from the wireless device based the capability of the
wireless device.
85. A wireless device according to claim 84, further configured to:
obtain a second default value of a second initial delay value for
the wireless device for a transmission of data from the wireless
device, which second default value is based on a second
transmission type of data from the wireless device; and use the
second default value when performing one or more transmissions of
the second transmission type to the radio network node.
86. A wireless device according to claim 80, wherein the delay
value is an index value of a table mapping the index value to a
delay value.
Description
TECHNICAL FIELD
[0001] Embodiments herein relate to a radio network node, a
wireless device and methods performed therein. In particular,
embodiments herein relate to handling communication of data, such
as performing data transmission to or from the radio network node,
in a wireless communication network.
BACKGROUND
[0002] In a typical wireless communication network, wireless
devices, also known as wireless communication devices, mobile
stations, stations (STA) and/or user equipments (UE), communicate
via a Radio Access Network (RAN) to one or more core networks (CN).
The RAN covers a geographical area which is divided into service
areas or cell areas, which may also be referred to as a beam or a
beam group, with each service area or cell area being served by a
radio network node such as a radio access node e.g., a Wi-Fi access
point or a radio base station (RBS), which in some networks may
also be denoted, for example, a "NodeB" or "eNodeB". A service area
or cell area is a geographical area where radio coverage is
provided by the radio network node. The radio network node
communicates over an air interface operating on radio frequencies
with the wireless device within range of the radio network
node.
[0003] A Universal Mobile Telecommunications System (UMTS) is a
third generation (3G) telecommunication network, which evolved from
the second generation (2G) Global System for Mobile Communications
(GSM). The UMTS terrestrial radio access network (UTRAN) is
essentially a RAN using wideband code division multiple access
(WCDMA) and/or High Speed Packet Access (HSPA) for user equipments.
In a forum known as the Third Generation Partnership Project
(3GPP), telecommunications suppliers propose and agree upon
standards for third generation networks, and investigate enhanced
data rate and radio capacity. In some RANs, e.g. as in UMTS,
several radio network nodes may be connected, e.g., by landlines or
microwave, to a controller node, such as a radio network controller
(RNC) or a base station controller (BSC), which supervises and
coordinates various activities of the plural radio network nodes
connected thereto. This type of connection is sometimes referred to
as a backhaul connection. The RNCs and BSCs are typically connected
to one or more core networks.
[0004] Specifications for the Evolved Packet System (EPS), also
called a Fourth Generation (4G) network, have been completed within
the 3.sup.rd Generation Partnership Project (3GPP) and this work
continues in the coming 3GPP releases, for example to specify a
Fifth Generation (5G) network. The EPS comprises the Evolved
Universal Terrestrial Radio Access Network (E-UTRAN), also known as
the Long Term Evolution (LTE) radio access network, and the Evolved
Packet Core (EPC), also known as System Architecture Evolution
(SAE) core network. E-UTRAN/LTE is a variant of a 3GPP radio access
network wherein the radio network nodes are directly connected to
the EPC core network rather than to RNCs. In general, in
E-UTRAN/LTE the functions of an RNC are distributed between the
radio network nodes, e.g. eNodeBs in LTE, and the core network. As
such, the RAN of an EPS has an essentially "flat" architecture
comprising radio network nodes connected directly to one or more
core networks, i.e. they are not connected to RNCs. To compensate
for that, the E-UTRAN specification defines a direct interface
between the radio network nodes, this interface being denoted the
X2 interface. EPS is the Evolved 3GPP Packet Switched Domain.
[0005] Advanced Antenna Systems (AASs) is an area where technology
has advanced significantly in recent years and where we also
foresee a rapid technology development in the years to come. Hence
it is natural to assume that AASs in general and massive Multiple
Input Multiple Output (MIMO) transmission and reception in
particular will be a cornerstone in a future Fifth Generation (5G)
system.
[0006] In relation to the AASs, beam-forming is becoming
increasingly popular and capable and it is not only for
transmission of data but also for transmission of control
information. This is one motivation behind a control channel
described in Long Term Evolution (LTE) known as Enhanced Physical
Downlink Control Channel (ePDCCH). When the control channel is
beam-formed, the cost of transmitting the overhead control
information can be reduced due to the increased link budget
provided by the additional antenna gain.
[0007] Automatic repeat-request (ARQ) is an error-control technique
used in many wireless networks. With ARQ, a receiver of data
transmissions sends acknowledgements (ACKs) or negative
acknowledgments (NACKs) to inform the transmitter of whether each
message has been correctly received. Incorrectly received messages,
as well as messages that aren't acknowledged at all, can then be
re-transmitted.
[0008] Hybrid ARQ (HARQ) combines ARQ with forward error-correction
(FEC) coding of the data messages, to improve the ability of the
receiver to receive and correctly decode the transmitted messages.
As with conventional ARQ, receivers employing HARQ send ACKs and
NACKs, as appropriate, after each attempt to decode a message.
These ACKs and NACKs are referred to as "HARQ feedback."
[0009] For downlink HARQ transmissions in LTE today, HARQ feedback
is sent from the wireless device, e.g. a wireless device to the
wireless communication Network (NW) on either Physical Uplink
Control Channel (PUCCH) or Physical Uplink Shared Channel (PUSCH),
depending on whether the wireless device has been scheduled for
uplink PUSCH transmission or not. The NW can thereafter, on an
individual HARQ process basis, draw conclusions on whether the last
HARQ reception for that process was successful or not, e.g. based
on received ACK/NACK, or even if the Downlink (DL) Assignment
reception failed, i.e. the wireless device does not send any
feedback also called Discontinuous Transmission (DTX).
[0010] The timing of the transmitted HARQ feedback in LTE is such
that, for Frequency Division Duplexing (FDD), the feedback from one
HARQ Receive (RX) process is received in the Uplink (UL) in
subframe n+4 if the corresponding DL transmission for that process
was in subframe n, corresponding to a delay of 4 milliseconds (ms)
in total. Hence, there is a fixed timing relationship, also
referred to as k_fix subframes, between the scheduling subframe, or
Physical Downlink Shared Channel (PDSCH) subframe, to the uplink
transmission, so no scheduling of HARQ-ACK is used. For example, in
LTE FDD, a k_fix=4 subframe delay is used for ACK/NACK. For Time
Division Duplexing (TDD), the delay from DL data transmission to UL
feedback reception may be larger than four to cater for the
half-duplex DL-UL split. Providing feedback and scheduling data
transmissions as performed in prior art may limit the performance
of the wireless communication network.
SUMMARY
[0011] An object herein is to provide a mechanism that improves
performance of the wireless communication network during
transmission of data.
[0012] According to embodiments herein the object is achieved by
providing a method performed by a radio network node for handling
transmission of data from a wireless device in a wireless
communication network. The radio network node determines a delay
value, such as a k-value, for a transmission of data from the
wireless device based on a transmission type of data from the
wireless device or a capability of the wireless device. The
capability is related to a processing time for processing received
data from the radio network node, or for processing data for
transmission to the radio network node. The radio network node
transmits an indication, to the wireless device, which indication
indicates the determined delay value. The determined delay value
may be a default value for the wireless device to use as default
based on the transmission type of data from the wireless device,
or, in some embodiments, the radio network node may receive, from
the wireless device, a capability indication indicating the
capability of the wireless device, and the determined delay value
may be a dynamical or adjusted value based on the indicated
capability of the wireless device.
[0013] According to embodiments herein the object is achieved by
providing a method performed by a wireless device for handling a
transmission of data in a wireless communication network. The
wireless device receives an indication, e.g. the k-value or an
index pointing to a k-value, from a radio network node. The
indication indicates a delay value for a transmission of data from
the wireless device based on a transmission type of data from the
wireless device or a capability of the wireless device. The
capability is related to a processing time for processing received
data from the radio network node, or for processing data for
transmission to the radio network node. The wireless device further
performs a transmission of data to the radio network node delayed
based on the received indication, or as indicated by the
indication. The wireless device may in some embodiments further
transmit a capability indication, e.g. a minimum k-value (min_k),
indicating a capability of the wireless device, which capability is
related to processing time for processing received data from the
radio network node or processing time for processing data for
transmission to the radio network node. Then, the wireless device
receives i.e. gets configured with the delay value from the radio
network node. The wireless device then performs the transmission of
data delayed with the indicated delay value or at least with the
indicated delay value, e.g. after receiving data from the radio
network node such as receiving a DL data transmission or a grant
for UL data transmission.
[0014] Additionally, a radio network node and a wireless device
configured to perform the methods herein are also provided.
[0015] According to embodiments herein the object is further
achieved by providing a radio network node for handling
transmission of data from a wireless device in a wireless
communication network. The radio network node is configured to
determine a delay value for a transmission of data from the
wireless device based on a transmission type of data from the
wireless device or a capability of the wireless device. The
capability is related to a processing time for processing received
data from the radio network node, or for processing data for
transmission to the radio network node. The radio network node is
configured to transmit an indication, to the wireless device, which
indication indicates the determined delay value.
[0016] According to embodiments herein the object is further
achieved by providing a wireless device for handling a transmission
of data in a wireless communication network. The wireless device is
configured to receive an indication from a radio network node. The
indication indicates a delay value for a transmission of data from
the wireless device based on a transmission type of data from the
wireless device or a capability of the wireless device. The
capability is related to a processing time for processing received
data from the radio network node, or for processing data for
transmission to the radio network node. The wireless device is
further configured to perform a transmission of data to the radio
network node delayed based on the received indication.
[0017] It is furthermore provided herein a computer program
comprising instructions, which, when executed on at least one
processor, cause the at least one processor to carry out any of the
methods above, as performed by the radio network node or the
wireless device. It is additionally provided herein a
computer-readable storage medium, having stored thereon a computer
program comprising instructions which, when executed on at least
one processor, cause the at least one processor to carry out the
method according to any of the methods above, as performed by the
radio network node or the wireless device.
[0018] Embodiments herein provide a manner of enabling scheduling
data transmission in a wireless communication network in an
efficient manner. By determining or dynamically changing the delay
value for the transmission of data from the wireless device after
receiving data from the radio network node one may adjust the
transmission time based on the capability of the wireless devices
and/or the transmission type of data and thus achieve an efficient
way of transmitting data leading to an improved performance of the
wireless communication network.
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Embodiments will now be described in more detail in relation
to the enclosed drawings, in which:
[0020] FIG. 1 is an overview of scheduling HARQ feedback in a
subframe;
[0021] FIG. 2 is an overview depicting a wireless communication
network according to embodiments herein;
[0022] FIG. 3a is a combined flowchart and signalling scheme
according to embodiments herein;
[0023] FIG. 3b is a combined flowchart and signalling scheme
according to embodiments herein;
[0024] FIG. 4 is a combined flowchart and signalling scheme
according to embodiments herein;
[0025] FIG. 5 is a combined flowchart and signalling scheme
according to embodiments herein;
[0026] FIG. 6 is a combined flowchart and signalling scheme
according to embodiments herein;
[0027] FIG. 7 is a combined flowchart and signalling scheme
according to embodiments herein;
[0028] FIG. 8 is a schematic flowchart depicting a method performed
by a radio network node according to embodiments herein;
[0029] FIG. 9 is a schematic flowchart depicting a method performed
by a wireless device according to embodiments herein;
[0030] FIG. 10 is a block diagram depicting a radio network node
according to embodiments herein; and
[0031] FIG. 11 is a block diagram depicting a wireless device
according to embodiments herein.
DETAILED DESCRIPTION
[0032] According to some embodiments herein, in uplink, e.g. in 5G,
a dynamic or adjusted scheduling delay, k, indicating a time from a
subframe where a scheduling message is received in the downlink to
a subframe where an uplink transmission is transmitted, may be
introduced, for example; indicating when DL HARQ-ACK, i.e. the ACK
or NACK response from the wireless device which has received a DL
data transmission, is scheduled by the radio network node, see
example in FIG. 1, and when UL PUSCH is scheduled by the radio
network node. The UL PUSCH may include a measurement report based
on downlink channel state information reference signals (CSI-RS)
transmitted in the downlink. In e.g. 5G, a DL scheduling Downlink
Control Information (DCI) may be used to schedule an uplink
transmission k subframes later. FIG. 1 shows a DL scheduling DCI
sent in a DL subframe further carrying DL data. The DCI carries
scheduling information and may be referred to as DL scheduling DCI.
In the example, the scheduling of HARQ-ACK may be k subframes later
than the DL scheduling DCI, k=3 is shown as an example. In the DL
subframe there is a guard period to switch from DL to UL before the
time slot for HARQ-ACK transmission from the wireless device to the
radio network node. The value k may be variable, and may be
included in the DCI, for example, 2 bits may be included in the DCI
to indicate the value of k. The DL scheduling DCI may be a DL DCI,
to schedule the DL data, or the UL DCI, to schedule the actual
uplink transmission.
[0033] It is observed that a short value of the k is more demanding
on the wireless device since the wireless device needs time to
process the DL data transmissions and decide on either ACK or NACK,
or the wireless device needs time to prepare e.g. encode, modulate,
etc, an UL data transmission, but a short value of the k shortens
the latency. If the UL transmission contains a measurement report,
the wireless device also needs time to prepare the report.
Different implementations will exist depending on the processing
capability of the wireless device, according to embodiments herein
it is thus suggested to introduce a delay value also referred to as
minimum delay value, based on wireless device capability that the
wireless device signals to the radio network node or a transmission
type of data from the wireless device, e.g. being feedback
transmission or UL data transmission.
[0034] Embodiments herein relate to wireless communication networks
in general. FIG. 2 is a schematic overview depicting a wireless
communication network 1. The wireless communication network 1
comprises one or more RANs and one or more CNs. The wireless
communication network 1 may use one or a number of different
technologies, such as Wi-Fi, Long Term Evolution (LTE),
LTE-Advanced, 5G, Wideband Code Division Multiple Access (WCDMA),
Global System for Mobile communications/enhanced Data rate for GSM
Evolution (GSM/EDGE), Worldwide Interoperability for Microwave
Access (WiMax), or Ultra Mobile Broadband (UMB), just to mention a
few possible implementations. Embodiments herein relate to recent
technology trends that are of particular interest in a 5G context,
however, embodiments are also applicable in further development of
the existing wireless communication systems such as e.g. WCDMA and
LTE.
[0035] In the wireless communication network 1, wireless devices
e.g. a wireless device 10 such as a mobile station, a non-access
point (non-AP) station (STA), a STA, a user equipment and/or a
wireless terminals, communicate via one or more Access Networks
(AN), e.g. RAN, to one or more core networks (CN) and/or other
wireless devices. It should be understood by the skilled in the art
that "wireless device" is a non-limiting term which means any
terminal, wireless communication terminal, user equipment, Machine
Type Communication (MTC) device, Device to Device (D2D) terminal,
or node e.g. smart phone, laptop, mobile phone, sensor, relay,
mobile tablets or even a small base station communicating within a
cell.
[0036] The wireless communication network 1 comprises a radio
network node 12 providing radio coverage over a geographical area,
a service area 11, which may also be referred to as a beam or a
beam group, of a first radio access technology (RAT), such as 5G,
LTE, Wi-Fi or similar. The radio network node 12 may be a
transmission and reception point e.g. a radio access network node
such as a Wireless Local Area Network (WLAN) access point or an
Access Point Station (AP STA), an access controller, a base
station, e.g. a radio base station such as a NodeB, an evolved Node
B (eNB, eNode B), a base transceiver station, a radio remote unit,
an Access Point Base Station, a base station router, a transmission
arrangement of a radio base station, a stand-alone access point or
any other network unit capable of communicating with a wireless
device within the service area served by the radio network node 12
depending e.g. on the first radio access technology and terminology
used. The radio network node 12 may be referred to as a serving
radio network node and communicates with the wireless device 10
with Downlink (DL) transmissions to the wireless device 10 and
Uplink (UL) transmissions from the wireless device 10.
[0037] As stated above embodiments herein relate to the
introduction of a delay, referred to as delay value or minimum
delay value, for scheduling PDSCH and PUSCH to/from the wireless
device 10, and as part of developing embodiments herein one or more
problems have been identified. For example, when the capability of
the wireless device 10 is unknown to the radio network node 12 e.g.
before the wireless device capability has been signaled to the
radio network node 12 from the wireless device 10, the supported
delay value is also unknown. Furthermore, even if the capabilities
of the wireless devices are known, some downlink transmissions may
be group transmissions, such as paging and broadcast of system
information resulting in an insecurity in selecting an appropriate
delay value. Embodiments herein solve at least one of these
disadvantages by the introduction of communicating the determined
delay value.
[0038] FIG. 3a is a combined flowchart and signaling scheme
according to embodiments herein. Actions may be performed in any
suitable order.
[0039] In this example, the radio network node 12 receives data
intended for the wireless device 10. Hence, the radio network node
12 has data intended for the wireless device 10 to schedule as well
as feedback of the data intended for the wireless device 10.
[0040] Action 301. The radio network node 12 may schedule resources
for DL transmissions, DL data, from the radio network node 12.
Additionally, the radio network node 12 may further schedule
resources for carrying feedback of the DL transmission from the
radio network node 12. The scheduling is taking the delay value
into account. The delay value may either by a default value,
denoted as k_0 or k_min_0, or a dynamical or adjusted value,
denoted k or k_min, taking capability of the wireless device 10
into account. The default value may depend on one or several of
these parameters: The transmission type of message, e.g. HARQ-ACK,
uplink transmission, Random Access Channel (RACH) response,
dedicated system info, containing a measurement report, etc; The
message payload being e.g. a table in a specification that
describes the default value to use for different payload ranges
such as up to 1000 bits, from 1001 bits up to 10000 bits, and so
on; and a scheduling bandwidth e.g. a table in a specification that
describe the default value to use for different scheduling
bandwidths such as up to 6 Resource blocks (RB), from 7 RBs up to
100 RBs, and so on. Thus the default value may be considered a
fixed value or a value that is dynamical as well. It should be
noted that the message payload and scheduling bandwidth are also
indications of the transmission type. The delay value being the
dynamical value may depend on a scheduled bandwidth, e.g. number of
RB, for the DL transmission. The dynamical value may be the time
from the subframe containing the DL transmission, which is the same
subframe containing DL DCI, to the subframe containing the
feedback.
[0041] Action 302. The radio network node 12 then transmits a
control message or information, such as a DL grant, indicating
scheduling of resources for carrying the data transmission over the
channel to the wireless device 10 and/or feedback from the wireless
device 10. The control message may thus additionally or
alternatively indicate the scheduling of resources for feedback
transmission of the data transmission from the radio network node
12. In some embodiments scheduling of feedback of data in the
downlink is indicated in the control message with an indication of
the delay value. The delay value indicates a time, also referred to
as processing time, enabling the wireless device 10 to process the
control message, decode the data, and/or generate feedback for the
DL transmission.
[0042] Action 303. The radio network node 12 may then transmit DL
data to the wireless device 10 as scheduled.
[0043] Action 304. The wireless device 10 detects and reads the
control message, attempts to decode the received DL data and
generates feedback regarding the decoding e.g. ACK in case of
successful decoding, NACK in case of unsuccessful decoding of data
and Discontinuous transmission (DTX), i.e. no transmission, in case
of unsuccessful decoding/detection of the control message i.e. not
detecting the control message. Thus, the wireless device 10 decodes
and generates feedback during the delay value, e.g. the default
value, k_0, or the adjusted value, k, signaled in the control
message or a previous control message. The default value may be
preconfigured at the wireless device 10.
[0044] Action 305. The wireless device 10 then transmits the
generated feedback as scheduled, e.g. based on the delay value
indicated in the control message. Feedback indicators of the
feedback may comprise one bit to indicate that the ACK/NACK is
present and where, which resource elements, it is present may be
given by e.g. standard. Action 306. The radio network node 12 may
read the feedback information based on knowledge of the scheduled
resources for the feedback. The radio network node 12 then
determines whether to retransmit any DL data based on the read
feedback.
[0045] This embodiment describes the HARQ-ACK transmission type but
the same solution holds for other transmission types such a UL data
transmissions over PUSCH.
[0046] A DCI bit field may be introduced in a DL data scheduling
DCI message also referred to as a scheduling DCI message.
[0047] The DCI bit field represents the delay value e.g. denoted as
k_HARQ_i, wherein i=0, 1, 2, 3, defining a subframe offset relative
to the subframe for which the wireless device 10 receives the DCI,
assuming an example of 4 values. See table A.
TABLE-US-00001 TABLE A DCI format Bit field Scheduling delay k_HARQ
00 k_HARQ_0 01 k_HARQ_1 10 k_HARQ_2 11 k_HARQ_3
[0048] The delay values or offsets related to the different
indications, k-values, may be configured by higher layer signaling
from the radio base station 12 or a core network node to the
wireless device 10, for example using Radio Resource Control (RRC)
signaling.
[0049] The radio network node 12 will not indicate a smaller
k_HARQ_i in the scheduling DCI message than the wireless device 10
has capability to support. If a smaller offset is anyway received
by the wireless device 10, the wireless device 10 may ignore the
scheduling DCI message or feed back a NACK. Hence, the wireless
device 10 may compare the indicated delay value from the radio
network node 12 and compare it to its own capability of processing
data within the delay value.
[0050] Before the radio network node 12 knows the capability of
delay value of the wireless device 10, at least one of k_HARQ_i is
assumed by the wireless device 10 to be larger or equal to the
default value k_0. For example, k_HARQ_0 can have a default value
given by specifications before capability of the wireless device 10
has been signalled and RRC configuration of the values k_HARQ_i has
been configured.
[0051] Alternatively, a complete nominal table is used before
capability of the wireless device 10 is signalled and RRC
configuration of the table has been established. See table B or
table C. In this case, table A may be used when capability of the
wireless device 10 is known and scheduling delays k_HARQ_i, i=0, 1,
2, 3 has been configured by higher layers.
TABLE-US-00002 TABLE B DCI format Bit field Scheduling delay k_HARQ
00 k_min_0 01 N/A 10 N/A 11 N/A
TABLE-US-00003 TABLE C DCI format Bit field Scheduling delay k_HARQ
00 k_min_0 01 k_min_0 + 1 10 k_min_0 + 2 11 k_min_0 + 3
[0052] Alternatively or additionally, a second or other DCI bit
field is introduced in a scheduling DCI message. The second bit
field may represent the adjusted or dynamic value k_dyn_i, i=0, 1,
2, or a subframe offset relative to the subframe for which the
wireless device 10 receives the DCI, assuming an example of 4
values, plus a static value or offset k_stat. See table D. The
delay values or offsets k_dyn_i may be configured by higher layer
signaling from radio network node 12 to the wireless device 10, for
example using RRC signaling. The radio network node 12 will not
indicate a smaller k_stat+k_dyn_i in the scheduling DCI message
than the wireless device 10 has capability to support. If a smaller
offset or delay value is anyway received by the wireless device 10,
the wireless device 10 may ignore the scheduling message or feed
back a NACK. Before the radio network node 12 knows the capability
of minimum delay of the wireless device 10, at least one of k_dyn_i
is assumed to be equal to k_dyn_0 and k_stat equals k_stat_0 being
an example of the default value k_0. k_dyn_0 and k_stat_0 may be
given by specifications.
TABLE-US-00004 TABLE D DCI format Bit field Scheduling delay k_HARQ
00 k_stat 01 k_stat + k_dyn_0 10 k_stat + k_dyn_1 11 k_stat +
k_dyn_2
[0053] FIG. 3b is a combined flowchart and signaling scheme
according to an example of embodiments herein for scheduling UL
data transmission, i.e. a data transmission over a channel such as
PUSCH from the wireless device 10 to the radio network node 12.
Actions may be performed in any suitable order.
[0054] Action 310. The wireless device 10 has data intended for the
radio network node 12 or for transmission to another node or
another wireless device. The wireless device 10 may then transmit
an UL data request, e.g. a scheduling request, when data are
buffered for transmission at the wireless device 10.
[0055] Action 311. The radio network node 12 schedules resources
for carrying the data transmission over the channel from the
wireless device 10, UL data. The scheduling is taking the delay
value into account. The delay value may either be the default
value, k_0, or the dynamical value, the k, taking capability of the
wireless device 10 into account.
[0056] Action 312. The radio network node 12 then transmits a
control message or information, such as an UL grant, indicating
scheduling of resources for carrying the data transmission over the
channel from the wireless device 10. The control message may
comprise an indication of the delay value, such as a k indication,
for the wireless device 10.
[0057] Action 313. The wireless device 10 detects and reads the
control message.
[0058] Action 314. The wireless device 10 then transmits UL data,
as scheduled, i.e. after the delay value has passed.
[0059] FIG. 4 is a combined flowchart and signalling scheme
according to embodiments herein.
[0060] Action 401. The radio network node 12 may determine the
default value, k_0, for a delay of transmissions from the wireless
device 10. E.g. for a given uplink transmission type the default
value is set to a nominal value. Thus the default value may be
different for different UL transmission types. Uplink transmission
types may e.g. be HARQ-ACK/NACK, data transmission on PUSCH,
measurement reports, and even data transmissions of different
payloads could be defined as different types, e.g. small, medium,
large payloads determined by level of payloads and threshold of the
levels, and thus data transmissions of different payloads may have
different default values.
[0061] Action 402. The radio network node 12 may schedule, i.e.
indicate the scheduling in a control message, a data transmission
from or to the wireless device 10 and in the control message also
indicate the determined default value as scheduled by the radio
network node 12. For example, the radio network node 12 may
transmit an index value in a table of delay values stored at both
the radio network node 12 and the wireless device 10, which index
value is selected based on the transmission type.
[0062] Action 403. The wireless device 10 receives the control
message and performs a transmission delayed with the indicated
delay value, e.g. as indicated by the index value.
[0063] Action 404. The wireless device 10 may then transmit
capability, or an indication of capability, a capability
indication, of the wireless device 10 to the radio network node 12.
E.g. the wireless device 10 may signal the capability indication as
an indication of smallest supported delay value, mink, at the
wireless device 10 for processing data. The delay value being
related to the processing capability, the higher processing
capability the smaller delay value needed.
[0064] Action 405. The radio network node 12 may then determine the
delay value based on the received capability indication, set to the
adjusted value, k. If capability based delay value for a given
transmission type is not used, e.g. UL transmissions, the default
value k_0 for that transmission type may be used instead. The
default value of the delay value may be given by the standard
specifications. For example, the radio network node 12 may schedule
HARQ-ACK or PUSCH with a delay equal to or larger than the default
value, k_0. In an alternative embodiment, the delay is fixed and
equal to the default value, k_0, until adjusted value, k, has been
negotiated or agreed upon.
[0065] Action 406. The radio network node 12 may then send the
determined delay value, i.e. the dynamic or adjusted value to the
wireless device 10. This may be sent separately or as part of other
signaling. E-g--the radio network node 12 may schedule, in a
control message, a data transmission from or to the wireless device
10 and in the control message also indicate the determined adjusted
value as scheduled by the radio network node 12. For example, the
radio network node 12 may transmit an index value in the table of
delay values stored at both the radio network node 12 and the
wireless device 10, which index value is selected based on the
capability of the wireless device 10 indicated by the capability
indication.
[0066] Action 407. The wireless device 10 receives the control
message and performs a transmission delayed with the indicated
delay value, the dynamical value, e.g. as indicated by the index
value.
[0067] FIG. 5 is a combined flowchart and signaling scheme
according to embodiments herein. Illustrating a procedure before
capability negotiation has occurred or been performed.
[0068] Action 501. The radio network node 12 schedules DL data
transmission on PDSCH.
[0069] Action 502. The radio network node 12 then transmits e.g. DL
grant with DCI with the scheduled information, DL data on
PDSCH.
[0070] Action 503. The radio network node 12 schedules feedback for
the DL data transmission on PDSCH.
[0071] Action 504. The radio network node 12 then transmits a
control message with the scheduled information for the feedback.
The control message indicating e.g. scheduled HARQ-ACK, at least
k_0 subframes later than the control message. The control message
in Action 502 and 504 may be the same control message, but may also
be different control messages. The processing delay is however in
any case related to PDSCH so in this case when k in action 504 is
defined as relative the control message it may also fulfil some
minimum delay relative the PDSCH transmission.
[0072] Action 505. The wireless device 10 decodes or attempts to
decode control message and DL PDSCH.
[0073] Action 506. The wireless device 10 transmits feedback of the
DL transmission as scheduled. The scheduled transmission are k_0
subframe delayed from reception of the control message.
[0074] FIG. 6 is a combined flowchart and signaling scheme
according to embodiments herein. Illustrating when determining the
adjusted value, k, using capability negotiation. Transmissions
before negotiation use old k-values e.g. k_0.
[0075] Action 601. The wireless device 10 transmits the capability
indication indicating its capability, also referred to as wireless
device capability, related to the processing time of the wireless
device 10.
[0076] Action 602. The radio network node 12 determines the delay
value, e.g. the dynamical value, k, based on the received
capability.
[0077] Action 603. The radio network node 12 transmits an
indication of the determined delay value. Then transmissions from
the wireless device 10 use determined delay value k.
[0078] FIG. 7 is a combined flowchart and signaling scheme
according to embodiments herein. Illustrating a procedure after
capability negotiation has occurred or been performed.
[0079] Action 701. The radio network node 12 schedules DL data
transmission on PDSCH.
[0080] Action 702. The radio network node 12 then transmits e.g. DL
grant with DCI with the scheduled information, DL data on
PDSCH.
[0081] Action 703. The radio network node 12 schedules feedback for
the DL data transmission on PDSCH.
[0082] Action 704. The radio network node 12 then transmits a
control message with the scheduled information for the feedback.
The control message indicating e.g. scheduled HARQ-ACK, k number of
subframes later, i.e. the delay value, than the control
message.
[0083] Action 705. The wireless device 10 decodes or attempts to
decode control message and DL PDSCH.
[0084] Action 706. The wireless device 10 transmits feedback of the
DL transmission as scheduled. The scheduled transmission are k
subframes delayed from reception of the control message as defined
by the delay value.
[0085] FIG. 8 is a flowchart depicting a method performed by the
radio network node 12 for handling transmission of data, such as
transmission of data over a subframe or feedback, from the wireless
device 10 in the wireless communication network 1. Actions may be
performed in any suitable order and optional actions are marked as
dashed boxes.
[0086] Action 801. The radio network node 12 may receive an UL data
request, a scheduling request for transmitting data, from the
wireless device 10 or detect that a buffer level at the radio
network node 12 is reached for the wireless device 10 for
transmitting data to the wireless device. The radio network node 12
may thus need to schedule a data transmission from the wireless
device, either for the UL data or for feedback of the DL data. The
data may thus be of a transmission type such as feedback data e.g.
HARQ-ACK/NACK, UL data transmission e.g. data over PUSCH, and even
data transmissions of different payloads could be defined as
different transmission types, e.g. small, medium, large payloads
determined by level of payloads and thresholds of the levels.
[0087] Action 802. The radio network node 12 may set a default
value as an initial delay value for the wireless device 10 for a
transmission of data from the wireless device 10 based on the
transmission type of data from the wireless device 10. The radio
network node 12 may further set a second default value as a second
initial delay value for the wireless device 10 for a second
transmission of data from the wireless device 10 based on a second
transmission type of data from the wireless device 10. Action 803.
The radio network node 12 may then indicate the set default value
to the wireless device 10 with a default indication. Alternatively
or additionally, the radio network node 12 may indicate the set
second default value to the wireless device 10 with the default
indication or another default indication. Hence, the radio network
node may provide different default values for e.g. transmission of
uplink data and transmission of HARQ feedback. Different processing
functions at the wireless device are used in these two cases.
[0088] Action 804. The radio network node 12 may receive, from the
wireless device 10, the capability indication indicating the
capability of the wireless device 10. The capability is related to
the processing time of the wireless device e.g. for processing
received data from the radio network node 12 or processing time for
processing data for transmission to the radio network node 12. The
capability indication may be the smallest delay value supported by
the wireless device 10, denoted as mink.
[0089] Action 805. The radio network node 12 determines the delay
value for a transmission of data from the wireless device based on
the transmission type of data from the wireless device 10 or the
capability of the wireless device 10. The capability is related to
the processing time for processing received data from the radio
network node 12, or for processing data for transmission to the
radio network node 12. The radio network node 12 determines the
delay value for the transmission of data from the wireless device
10 based on the transmission type of data from the wireless device,
e.g. for k_min_0. Alternatively or additionally, the radio network
node 12 determines the delay value for the transmission of data
from the wireless device 10 based on the capability of the wireless
device, e.g. based on the received capability indication. The
determined delay value may be a default value, such as the k_0, for
the wireless device 10 to use as default based on the transmission
type of data from the wireless device 10, e.g. different
transmission types may have different default values. The
determined delay value may additionally or alternatively be a
dynamical or adjusted value based on the capability of the wireless
device 10 related to the processing time of the wireless device 10
e.g. the indicated capability of the wireless device 10 indicated
in the capability indication.
[0090] Action 806. The radio network node 12 then transmits the
indication, to the wireless device 10, which indication indicates
the determined delay value. The radio network node 12 may configure
the wireless device 10 with the delay value. The radio network node
12 may schedule feedback for the DL transmission and transmit a
control message with the indication of the determined delay value
indicating the scheduling of the feedback. Additionally or
alternatively, the radio network node 12 may schedule UL data from
the wireless device and transmit a control message with the
indication of the determined delay value indicating the scheduling
of the UL transmission.
[0091] The radio network node 12 may schedule resources for
carrying the data transmission over the channel from the wireless
device 10, and resources for feedback transmission of a data
transmission from the radio network node over the same or different
channel.
[0092] The capability indication may an index value indicating a
set of delay values. Furthermore, the indication and/or the default
indication may be an index value of a table mapping the index value
to a delay value.
[0093] FIG. 9 is a flowchart depicting a method performed by the
wireless device 10 for handling the transmission of data in the
wireless communication network 1, e.g. a data transmission, UL data
or feedback data, to the radio network node 12 in the wireless
communication network 1. Actions may be performed in any suitable
order and optional actions are marked as dashed boxes.
[0094] Action 901. The wireless device 10 may transmit a scheduling
request for UL transmissions.
[0095] Action 902. The wireless device 10 may obtain the default
indication indicating the default value of the initial delay value
for the wireless device 10 for the transmission of data from the
wireless device 10. The default value is based on the transmission
type of data from the wireless device 10. The wireless device may
further obtain the second default value of the second initial delay
value for the wireless device 10 for the transmission of data from
the wireless device 10, which second default value is based on the
second transmission type of data from the wireless device 10. The
wireless device 10 may obtain the default indication from the radio
network node 12 or another radio network node or be preconfigured
with the default values.
[0096] Action 903. The wireless device 10 may use the default value
when performing one or more transmissions of data to the radio
network node 12 until receiving the indication indicating the delay
value, see action 905, which received indication indicates the
delay value for the transmission of data from the wireless device
10 based the capability of the wireless device. Furthermore, the
wireless device may use the second default value when performing
one or more transmissions of the second transmission type to the
radio network node 12.
[0097] Action 904. The wireless device 10 may transmit the
capability indication indicating the capability of the wireless
device, which capability is related to processing time of the
wireless device 10. For example, processing time for processing
received data from the radio network node 12 or processing time for
processing data for transmission to the radio network node 12. The
capability indication may be the smallest delay value supported by
the wireless device 10, denoted as mink. The capability indication
may be an index value indicating a set of delay values.
[0098] Action 905. The wireless device 10 receives, from the radio
network node 12, the indication indicating the delay value,
k-value, for the transmission of data from the wireless device,
which delay value is based on the transmission type of data from
the wireless device or the capability of the wireless device. The
capability is related to the processing time for processing
received data from the radio network node 12, or for processing
data for transmission to the radio network node 12. Thus, the
wireless device gets configured with the delay value from the radio
network node. The delay value received may be used in combination
with the default value. The wireless device 10 may use the
determined delay value but still keep the default value stored,
which default value may be used in some case, for example, after
radio link failure.
[0099] Action 906. The wireless device 10 then performs the
transmission of data delayed based on the received indication, e.g.
delayed with the indicated delay value after receiving data from
the radio network node.
[0100] It should be noted that the indication and/or the default
indication may be an index value of a table mapping the index value
to a delay value.
[0101] FIG. 10 is a block diagram depicting the radio network node
12 for handling transmission of data, such as transmission of data
over a subframe or feedback, from the wireless device 10 in the
wireless communication network 1.
[0102] The radio network node 12 may comprise a processing unit
1001, e.g. one or more processors, configured to perform the
methods herein.
[0103] The radio network node 12 may comprise a receiving module
1002. The radio network node 12, the processing unit 1001, and/or
the receiving module 1002 may be configured to receive an UL data
request, a scheduling request for transmitting data, from the
wireless device 10.
[0104] The radio network node 12 may comprise a detecting module
1003. The radio network node 12, the processing unit 1001, and/or
the detecting module 1003 may be configured to detect that the
buffer level at the radio network node 12 is reached for the
wireless device 10 for transmitting data to the wireless device The
radio network node 12 may comprise a scheduling module 1004. The
radio network node 12, the processing unit 1001, and/or the
scheduling module 1004 may be configured to schedule a data
transmission from the wireless device, either for the UL data or
for feedback of the DL data. The data may thus be of a transmission
type such as feedback data e.g. HARQ-ACK/NACK, UL data transmission
e.g. data over PUSCH, and even data transmissions of different
payloads could be defined as different transmission types, e.g.
small, medium, large payloads determined by level of payloads and
thresholds of the levels.
[0105] The radio network node 12, the processing unit 1001, and/or
the receiving module 1002 may be configured to receive, from the
wireless device 10, the capability indication indicating the
capability related to the processing time of the wireless device
10. The capability is related to processing time for processing
received data from the radio network node 12 or processing time for
processing data for transmission to the radio network node 12. The
capability indication may be the smallest delay value supported by
the wireless device 10, mink. The capability indication may be the
index value indicating the set of delay values (supported by the
wireless device).
[0106] The radio network node 12 may comprise a determining module
1005. The radio network node 12, the processing unit 1001, and/or
the determining module 1005 is configured to determine the delay
value for the transmission of data from the wireless device 10
based on the transmission type of data from the wireless device,
e.g. for k_0. Alternatively or additionally, the radio network node
12 determines the delay value for the transmission of data from the
wireless device 10 based on the capability of the wireless device.
The capability is related to the processing time for processing
received data from the radio network node 12, or for processing
data for transmission to the radio network node 12. The determined
delay value may be a default value, such as the k_0, for the
wireless device to use as default based on the transmission type of
data from the wireless device 10, e.g. different transmission types
may have different default values. The determined delay value may
additionally or alternatively be the dynamical or adjusted value
based on the indicated capability of the wireless device 10 related
to the processing time of the wireless device 10.
[0107] The radio network node 12 may comprise a transmitting module
1006. The radio network node 12, the processing unit 1001, and/or
the transmitting module 1006 is configured to transmit the
indication, to the wireless device 10. The indication indicates the
determined delay value, thus, configures the wireless device 10
with the delay value. The radio network node 12, the processing
unit 1001, and/or the scheduling module 1004 may be configured to
schedule feedback for the DL transmission and the radio network
node 12, the processing unit 1001, and/or the transmitting module
1006 may be configured to transmit a control message with the
indication of the determined delay value indicating the scheduling
of the feedback. Additionally or alternatively, the radio network
node 12, the processing unit 1001, and/or the scheduling module
1004 may be configured to schedule UL data from the wireless device
and the radio network node 12, the processing unit 1001, and/or the
transmitting module 1006 may be configured to transmit a control
message with the indication of the determined delay value
indicating the scheduling of the UL transmission. The indication
and/or the default indication may be the index value of the table
mapping the index value to the delay value.
[0108] The radio network node 12, the processing unit 1001, and/or
the determining module 1005 may further be configured to set the
default value as an initial delay value for the wireless device 10
for a transmission of data from the wireless device 10 based on the
transmission type of data from the wireless device 10.
[0109] The radio network node 12, the processing unit 1001, and/or
the transmitting module 1006 may be configured to indicate the set
default value to the wireless device 10 with a default
indication.
[0110] The radio network node 12, the processing unit 1001, and/or
the determining module 1005 may further be configured to the second
default value as a second initial delay value for the wireless
device 10 for the second transmission of data from the wireless
device 10 based on the second transmission type of data from the
wireless device 10.
[0111] The radio network node 12, the processing unit 1001, and/or
the transmitting module 1006 may be configured to indicate the set
second default value to the wireless device 10 with the default
indication or another default indication.
[0112] The radio network node 12, the processing unit 1001, and/or
the scheduling module 1004 may be configured to schedule resources
for carrying the data transmission over the channel from the
wireless device 10, and resources for feedback transmission of a
data transmission from the radio network node over the same or
different channel.
[0113] The methods according to the embodiments described herein
for the radio network node 12 are respectively implemented by means
of e.g. a computer program 1007 or a computer program product,
comprising instructions, i.e., software code portions, which, when
executed on at least one processor, cause the at least one
processor to carry out the actions described herein, as performed
by the radio network node 12. The computer program 1007 may be
stored on a computer-readable storage medium 1008, e.g. a disc or
similar. The computer-readable storage medium 1008, having stored
thereon the computer program, may comprise the instructions which,
when executed on at least one processor, cause the at least one
processor to carry out the actions described herein, as performed
by the radio network node 12. In some embodiments, the
computer-readable storage medium may be a non-transitory
computer-readable storage medium.
[0114] The radio network node 12 further comprises a memory 1009.
The memory comprises one or more units to be used to store data on,
such as feedback indicators, resources, SRs, DL data, UL/DL Grants,
delay values, tables, applications to perform the methods disclosed
herein when being executed, and similar.
[0115] FIG. 11 is a block diagram depicting the wireless device 10
for handling the transmission of data in the wireless communication
network 1 such as a data transmission, UL data or feedback data, to
the radio network node 12 in the wireless communication network
1.
[0116] The wireless device 10 may comprise a processing unit 1101,
e.g. one or more processors, configured to perform the methods
herein.
[0117] The wireless device 10 may comprise a transmitting module
1102. The wireless device 10, the processing unit 1101, and/or the
transmitting module 1102 may be configured to transmit a scheduling
request for UL transmissions.
[0118] The wireless device 10, the processing unit 1101, and/or the
transmitting module 1102 may be configured to transmit the
capability indication indicating the capability of the wireless
device, which capability is related to processing time of the
wireless device 10, e.g. processing time for processing received
data from the radio network node or processing time for processing
data for transmission to the radio network node. The capability
indication may be the smallest delay value supported by the
wireless device 10. The capability indication may be the index
value indicating the set of delay values e.g. supported by the
wireless device 10.
[0119] The wireless device 10 may comprise a receiving module 1103.
The wireless device 10, the processing unit 1101, and/or the
receiving module 1103 is configured to receive the indication from
the radio network node 12, which indication indicates the delay
value for the transmission of data from the wireless device 10,
which delay value is based on the transmission type of data from
the wireless device or the capability of the wireless device. The
capability is related to the processing time for processing
received data from the radio network node 12, or for processing
data for transmission to the radio network node 12. Thus, the
wireless device gets configured with the delay value from the radio
network node. The delay value received may be used in combination
with the default value. The wireless device 10 may use the
determined delay value but still keep the default value stored,
which default value may be used in some case, for example, after
radio link failure.
[0120] The wireless device 10 may comprise a performing module
1104. The wireless device 10, the processing unit 1101, and/or the
performing module 1104 is configured to perform the transmission of
data to the radio network node 12 delayed based on the received
indication e.g. delayed with the indicated delay value after
receiving data from the radio network node.
[0121] The wireless device 10, the processing unit 1101, and/or the
receiving module 1103 may be configured to obtain the default
indication indicating the default value of the initial delay value
for the wireless device 10 for the transmission of data from the
wireless device 10, which default value is based on the
transmission type of data from the wireless device 10.
[0122] The wireless device 10, the processing unit 1101, and/or the
performing module 1104 may be configured to use the default value
when performing one or more transmissions of data to the radio
network node 12 until receiving the indication indicating the delay
value, and the received indication indicates the delay value for a
transmission of data from the wireless device 10 based the
capability of the wireless device 10.
[0123] The wireless device 10, the processing unit 1101, and/or the
receiving module 1103 may be configured to obtain the second
default value of the second initial delay value for the wireless
device 10 for the transmission of data from the wireless device 10.
The second default value is based on the second transmission type
of data from the wireless device 10.
[0124] The wireless device 10, the processing unit 1101, and/or the
performing module 1104 may be configured to use the second default
value when performing one or more transmissions of the second
transmission type to the radio network node 12.
[0125] The indication and/or the default indication may be an index
value of the table mapping the index value to a delay value.
[0126] The methods according to the embodiments described herein
for the wireless device 10 are respectively implemented by means of
e.g. a computer program 1105 or a computer program product,
comprising instructions, i.e., software code portions, which, when
executed on at least one processor, cause the at least one
processor to carry out the actions described herein, as performed
by the wireless device 10. The computer program 1105 may be stored
on a computer-readable storage medium 1106, e.g. a disc or similar.
The computer-readable storage medium 1106, having stored thereon
the computer program, may comprise the instructions which, when
executed on at least one processor, cause the at least one
processor to carry out the actions described herein, as performed
by the wireless device 10. In some embodiments, the
computer-readable storage medium may be a non-transitory
computer-readable storage medium.
[0127] The the wireless device 10 further comprises a memory 1107.
The memory comprises one or more units to be used to store data on,
such as feedback indicators, resources, SRs, reference signals, UL
data, delay values, tables applications to perform the methods
disclosed herein when being executed, and similar.
[0128] As will be readily understood by those familiar with
communications design, that functions means or modules may be
implemented using digital logic and/or one or more
microcontrollers, microprocessors, or other digital hardware. In
some embodiments, several or all of the various functions may be
implemented together, such as in a single application-specific
integrated circuit (ASIC), or in two or more separate devices with
appropriate hardware and/or software interfaces between them.
Several of the functions may be implemented on a processor shared
with other functional components of a radio network node, for
example.
[0129] Alternatively, several of the functional elements of the
processing means discussed may be provided through the use of
dedicated hardware, while others are provided with hardware for
executing software, in association with the appropriate software or
firmware. Thus, the term "processor" or "controller" as used herein
does not exclusively refer to hardware capable of executing
software and may implicitly include, without limitation, digital
signal processor (DSP) hardware, read-only memory (ROM) for storing
software, random-access memory for storing software and/or program
or application data, and non-volatile memory. Other hardware,
conventional and/or custom, may also be included. Designers of
radio network nodes will appreciate the cost, performance, and
maintenance trade-offs inherent in these design choices.
[0130] It will be appreciated that the foregoing description and
the accompanying drawings represent non-limiting examples of the
methods and apparatus taught herein. As such, the inventive
apparatus and techniques taught herein are not limited by the
foregoing description and accompanying drawings. Instead, the
embodiments herein are limited only by the following claims and
their legal equivalents.
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