TECHNICAL FIELD
5 [0001] Embodiments of the present disclosure generally relate to the field of
telecommunication, and in particular, to methods, devices and computer storage media for
communication.
BACKGROUND
10 [0002] In the 3GPP meeting RAN#86, enhancements on the support for
multi-Transmission and Reception Point (multi-TRP) deployment have been discussed.
For example, it has been proposed to identify and specify features to improve reliability and
robustness for physical channels (such as, Physical Downlink Control Channel (PDCCH),
Physical Uplink Shared Channel (PUSCH) and/or Physical Uplink Control Channel
15 (PUCCH)) other than Physical Downlink Shared Channel (PDSCH) using multi-TRP
and/or multi-panel with Release 16 reliability features as a baseline. It has also been
proposed to identify and specify features to enable inter-cell multi-TRP operations. It has
also been proposed to evaluate and specify enhancements for simultaneous multi-TRP
transmissions with multi-panel receptions.
20 [0003] In the 3GPP meeting RAN1#98-99, it has been proposed to support Physical
Downlink Control Channel (PDCCH) repetitions to improve reliability and robustness for
the PDCCH. That is, downlink control information (DCI) can be repeatedly transmitted
from a network device to a terminal device more than once, so as to improve reliability and
robustness for the PDCCH. If PDCCH repetitions are enabled, it is required to ensure the
25 same DCI payload for the PDCCH repetitions.
SUMMARY
[0004] In general, example embodiments of the present disclosure provide methods,
devices and computer storage media for communication.
30 [0005] In a first aspect, there is provided a method of communication. The method
comprises transmitting, from a network device to a terminal device, downlink control
information (DCI) over a first set of Physical Downlink Control Channel (PDCCH)
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candidates for scheduling a Physical Downlink Shared Channel (PDSCH), wherein the DCI
includes at least one of a counter downlink assignment indicator (DAI) value and a total
DAI value; transmitting the PDSCH from the network device to the terminal device; and
receiving a hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for
5 the PDSCH from the terminal device, wherein the HARQ-ACK codebook is generated at
least based on a first configuration of a second set of PDCCH candidates, and at least one
of the counter DAI value and the total DAI value.
[0006] In a second aspect, there is provided a method of communication. The method
comprises detecting, from a network device and at a terminal device, downlink control
10 information (DCI) over a first set of Physical Downlink Control Channel (PDCCH)
candidates for scheduling a Physical Downlink Shared Channel (PDSCH), wherein the DCI
includes at least one of a counter downlink assignment indicator (DAI) value and a total
DAI value; in response to the DCI being detected over the first set of PDCCH candidates,
receiving the PDSCH transmitted from the network device; generating a hybrid automatic
15 repeat request acknowledgement (HARQ-ACK) codebook for the PDSCH, based on a first
configuration of a second set of PDCCH candidates, and at least one of the counter DAI
value and the total DAI value; and transmitting the HARQ-ACK codebook to the network
device.
[0007] In a third aspect, there is provided a method of communication. The method
20 comprises transmitting, from a network device to a terminal device, downlink control
information (DCI) over a first set of Physical Downlink Control Channel (PDCCH)
candidates for scheduling a communication between the network device and the terminal
device, wherein the DCI includes at least one of offset information for the communication
and first timing information for the communication; and performing the communication
25 with the terminal device based on second timing information, wherein the second timing
information is determined based on a time interval between the first set of PDCCH
candidates and a second set of PDCCH candidates and at least one of a first configuration
of the second set of PDCCH candidates, third timing information corresponding to the DCI
over the second set of PDCCH candidates, the offset information, and the first timing
30 information.
[0008] In a fourth aspect, there is provided a method of communication. The method
comprises detecting, from a network device and at a terminal device, downlink control
information (DCI) over a first set of Physical Downlink Control Channel (PDCCH)
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candidates for scheduling a communication between the network device and the terminal
device, wherein the DCI includes at least one of offset information for the communication
and first timing information for the communication; and in response to the DCI being
detected over the first set of PDCCH candidates, performing the communication with the
5 network device based on second timing information, wherein the second timing information
is determined based on a time interval between the first set of PDCCH candidates and a
second set of PDCCH candidates and at least one of a first configuration of the second set
of PDCCH candidates, third timing information corresponding to the DCI over the second
set of PDCCH candidates, the offset information, and the first timing information.
10 [0009] In a fifth aspect, there is provided a network device. The network device
comprises a processor and a memory coupled to the processor. The memory stores
instructions that when executed by the processor, cause the network device to perform the
method according to the first or third aspect of the present disclosure.
[0010] In a sixth aspect, there is provided a terminal device. The terminal device
15 comprises a processor and a memory coupled to the processor. The memory stores
instructions that when executed by the processor, cause the terminal device to perform the
method according to the second or fourth aspect of the present disclosure.
[0011] In a seventh aspect, there is provided a computer readable medium having
instructions stored thereon. The instructions, when executed on at least one processor,
20 cause the at least one processor to perform the method according to the above first, second,
third or fourth aspect of the present disclosure.
[0012] In an eighth aspect, there is provided a computer program product that is stored on
a computer readable medium and includes machine-executable instructions. The
machine-executable instructions, when being executed, cause a machine to perform the
25 method according to the above first, second, third or fourth aspect of the present disclosure.
30
[0013] It is to be understood that the summary section is not intended to identify key or
essential features of embodiments of the present disclosure, nor is it intended to be used to
limit the scope of the present disclosure. Other features of the present disclosure will
become easily comprehensible through the following description.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Through the more detailed description of some embodiments of the present
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disclosure in the accompanymg drawings, the above and other objects, features and
advantages of the present disclosure will become more apparent, wherein:
[0015] FIG. 1 illustrates an example communication network in which embodiments of
the present disclosure can be implemented;
5 [0016] FIG. 2 illustrates a signaling chart of an example process of communication in
accordance with some embodiments of the present disclosure;
[0017] FIGs 3A-3B illustrate examples of embodiments of the present disclosure;
[0018] FIGs 4A-4B illustrate examples of embodiments of the present disclosure;
[0019] FIG 5 illustrates an example of embodiments of the present disclosure;
10 [0020] FIG 6 illustrates an example of embodiments of the present disclosure;
[0021] FIG 7 illustrates an example of embodiments of the present disclosure;
[0022] FIGs 8A-8B illustrate examples of embodiments of the present disclosure;
[0023] FIG 9 illustrates an example of embodiments of the present disclosure;
[0024] FIGs lOA-lOB illustrate examples of embodiments of the present disclosure;
15 [0025] FIGs llA-llB illustrate examples of embodiments of the present disclosure;
[0026] FIGs 12A-12C illustrate examples of embodiments of the present disclosure;
[0027] FIG 13 illustrates an example of embodiments of the present disclosure;
[0028] FIG 14 illustrates an example of embodiments of the present disclosure;
[0029] FIGs 15A-15B illustrate examples of embodiments of the present disclosure;
20 [0030] FIG 16 illustrates an example of embodiments of the present disclosure;
[0031] FIG. 17 illustrates a signaling chart of an example process of communication in
accordance with some embodiments of the present disclosure;
[0032] FIG. 18 illustrates an example of embodiments of the present disclosure;
[0033] FIG. 19 illustrates a flowchart of an example method in accordance with some
25 embodiments of the present disclosure;
[0034] FIG. 20 illustrates a flowchart of an example method in accordance with some
embodiments of the present disclosure;
[0035] FIG. 21 illustrates a flowchart of an example method in accordance with some
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embodiments of the present disclosure;
[0036] FIG. 22 illustrates a flowchart of an example method in accordance with some
embodiments of the present disclosure; and
[0037] FIG. 23 is a simplified block diagram of a device that is suitable for implementing
5 embodiments of the present disclosure.
[0038] Throughout the drawings, the same or similar reference numerals represent the
same or similar element.
DETAILED DESCRIPTION
10 [0039] Principle of the present disclosure will now be described with reference to some
example embodiments. It is to be understood that these embodiments are described only
for the purpose of illustration and help those skilled in the art to understand and implement
the present disclosure, without suggesting any limitations as to the scope of the disclosure.
The disclosure described herein can be implemented in various manners other than the ones
15 described below.
[0040] In the following description and claims, unless defined otherwise, all technical and
scientific terms used herein have the same meaning as commonly understood by one of
ordinary skills in the art to which this disclosure belongs.