Method for enhancing physical downlink control channel, communication apparatus, and system

Patent metadata

Field	Value
Publication number	US-12538277-B2
Application number	US-202318165130-A
Country	US
Kind code	B2
Filing date	Feb 6, 2023
Priority date	Aug 7, 2020
Publication date	Jan 27, 2026
Grant date	Jan 27, 2026

Abstract

In an embodiment a method for enhancing a physical downlink control channel, the method includes obtaining, by a terminal device, control-resource set (CORESET) configuration information, wherein the CORESET configuration information is used for configuring a time-domain resource and a frequency-domain resource of a CORESET, wherein the time-domain resource comprises X time-domain symbols, wherein the X time-domain symbols are consecutive in time domain, wherein X is an integer greater than or equal to 1 and less than or equal to M, and wherein M is an integer greater than or equal to 4 and determining, by the terminal device, a physical downlink shared channel (PDSCH) time-domain resource configuration set based on the X time-domain symbols, wherein the PDSCH time-domain resource configuration set is for PDSCH time-domain resource allocation.

First claim

What is claimed is:

1 . A method for enhancing a physical downlink control channel, the method comprising:
obtaining, by a terminal device, control-resource set (CORESET) configuration information, wherein the CORESET configuration information is used for configuring a time-domain resource and a frequency-domain resource of a CORESET, wherein the time-domain resource comprises X time-domain symbols, wherein the X time-domain symbols are consecutive in time domain, wherein X is an integer greater than or equal to 1 and less than or equal to M, and wherein M is an integer greater than or equal to 4; and determining, by the terminal device, a physical downlink shared channel (PDSCH) time-domain resource configuration set based on the X time-domain symbols, wherein the PDSCH time-domain resource configuration set is for PDSCH time-domain resource allocation, and wherein determining, by the terminal device, the PDSCH time-domain resource configuration set based on the X time-domain symbols comprises:
determining, by the terminal device, a second PDSCH time-domain resource configuration set when the X time-domain symbols are greater than 3 in number,
wherein the second PDSCH time-domain resource configuration set comprises at least one group of PDSCH time-domain resource allocation information,
wherein the PDSCH time-domain resource allocation information comprises a mapping type of a PDSCH time-domain resource, a PDSCH time-domain start symbol, and a PDSCH time-domain length, and
wherein each group of PDSCH time-domain resource configuration information in the at least one group of PDSCH time-domain resource allocation information corresponds to row indication information.

2 . The method according to claim 1 , wherein the second PDSCH time-domain resource configuration set is a PDSCH time-domain resource configuration table.

3 . The method according to claim 1 , wherein determining, by the terminal device, the PDSCH time-domain resource configuration set based on the X time-domain symbols further comprises determining, by the terminal device, a first PDSCH time-domain resource configuration set when the X time-domain symbols are less than or equal to 3 in number, wherein the first PDSCH time-domain resource configuration set comprises a mapping type of a PDSCH time-domain resource, and the mapping type comprises a mapping type A and a mapping type B.

4 . The method according to claim 1 , further comprising:
when the X time-domain symbols are greater than 3 in number, determining, by the terminal device, target PDSCH time-domain resource allocation information from the second PDSCH time-domain resource configuration set based on the row indication information.

5 . The method according to claim 1 , further comprising:
when the X time-domain symbols are greater than 3 in number, determining, by the terminal device, target PDSCH time-domain resource allocation information from the second PDSCH time-domain resource configuration set based on the row indication information and position information of a demodulation reference signal (DMRS) of PDSCH time-domain resource mapping type A, wherein the target PDSCH time-domain resource allocation information comprises a mapping type of a PDSCH time-domain resource, a PDSCH time-domain start symbol, and a PDSCH time-domain length.

6 . The method according to claim 1 , wherein determining, by the terminal device, the PDSCH time-domain resource configuration information based on the second PDSCH time-domain resource configuration set comprises:
when the X time-domain symbols are greater than 3 in number, determining, by the terminal device, target PDSCH time-domain resource configuration information from the second PDSCH time-domain resource configuration set based on a time-domain resource allocation indication field in downlink control information (DCI) carried on a PDCCH and/or position information of a demodulation reference signal (DMRS) of PDSCH time-domain resource classification mapping type A sent by a network device, and wherein a mapping relationship exists between an indication status of the time-domain resource allocation indication field in the DCI and the row indication information.

7 . The method according to claim 1 , wherein the CORESET configuration information is CORESET0 configuration information, and wherein the method further comprises determining, by the terminal device, a frequency-domain resource of a downlink initial bandwidth part (BWP) based on a frequency-domain resource of a CORESET0.

8 . The method according to claim 1 , wherein obtaining, by the terminal device, the CORESET configuration information comprises:
receiving, by the terminal device, a master information block (MIB) from a network device by using a physical broadcast channel (PBCH), wherein the MIB comprises configuration information of a system information block 1, and the configuration information of the system information block 1 indicates the CORESET configuration information; or receiving, by the terminal device, an MIB from a network device by using a PBCH, wherein an idle bit in the MIB indicates the CORESET configuration information; or receiving, by the terminal device, a newly added timing bit from a network device by using a PBCH, wherein the newly added timing bit indicates the CORESET configuration information; or receiving, by the terminal device, an MIB and a newly added timing bit from a network device by using a PBCH, wherein the MIB and the newly added timing bit indicate the CORESET configuration information; or receiving, by the terminal device, indication information from a network device, wherein the indication information indicates the CORESET configuration information, and the indication information comprises one or more of a system information block 1, radio resource control signaling, media access signaling, and downlink control information.

9 . The method according to claim 1 , wherein the second PDSCH time-domain resource configuration set is a PDSCH time-domain resource matrix.

10 . A method for enhancing a physical downlink control channel, the method comprising:
sending, by a network device, control-resource set (CORESET) configuration information to a terminal device, wherein the CORESET configuration information is used for configuring a time-domain resource and a frequency-domain resource of a CORESET, wherein the time-domain resource comprises X time-domain symbols, wherein the X time-domain symbols are consecutive in time domain, wherein X is an integer greater than or equal to 1 and less than or equal to M, and wherein M is an integer greater than or equal to 4; and communicating, by the network device, with the terminal device by using a resource configured based on the CORESET configuration information; wherein sending, by the network device, the CORESET configuration information to the terminal device comprises:
sending, by the network device, a master information block (MIB) to the terminal device by using a physical broadcast channel (PBCH), wherein the MIB comprises configuration information of a system information block 1, and wherein the configuration information of the system information block 1 indicates the CORESET configuration information; or
sending, by the network device, an MIB to the terminal device by using a PBCH, wherein an idle bit in the MIB indicates the CORESET configuration information; or
sending, by the network device, a newly added timing bit to the terminal device by using a PBCH, wherein the newly added timing bit indicates the CORESET configuration information; or
sending, by the network device, an MIB and a newly added timing bit to the terminal device by using a PBCH, wherein the MIB and the ne

Assignees

• Huawei Tech Co Ltd

Inventors

• Hou Hailong
• Li Chaojun
• Zheng Juan
• Fei Yongqiang

Classifications

• H04W72/232

  the control data signalling from the physical layer, e.g. DCI signalling · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title

• H04W72/0446 Primary

  Resources in time domain, e.g. slots or frames · CPC title

• H04L5/0094

  Indication of how sub-channels of the path are allocated · CPC title

• H04W4/70 Primary

  Services for machine-to-machine communication [M2M] or machine type communication [MTC] · CPC title