US-20260128844-A1 - INFORMATION DETERMINATION METHOD/APPARATUS/DEVICE AND STORAGE MEDIUM

US20260128844A1US 20260128844 A1US20260128844 A1US 20260128844A1US-20260128844-A1

Abstract

A method for determining information includes: receiving configuration information and indication information, the configuration information being configured to configure a physical downlink shared channel (PDSCH) transmission manner, and the indication information being configured to indicate at least one of at least one joint transmission configuration indicator (TCI) state or at least one downlink (DL) TCI state; in response to the PDSCH transmission manner configured by the configuration information being a target transmission manner, determining a TCI state configured for at least one of physical downlink control channel (PDCCH) transmission or downlink signal transmission from at least one of the at least one joint TCI state or the at least one DL TCI state

Inventors

MingJu Li

Assignees

BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.

Dates

Publication Date: 20260507
Application Date: 20220908

Claims (20)

1 . A method for determining information, performed by a terminal device, comprising: receiving configuration information and indication information, wherein the configuration information is configured to configure a physical downlink shared channel (PDSCH) transmission manner, and the indication information is configured to indicate at least one of at least one joint transmission configuration indicator (TCI) state or at least one downlink (DL) TCI state; and in response to the PDSCH transmission manner configured by the configuration information being a target transmission manner, determining a TCI state configured for at least one of physical downlink control channel (PDCCH) transmission or downlink signal transmission from at least one of the at least one joint TCI state and/or the at least one DL TCI state.
2 . The method according to claim 1 , wherein the target transmission manner is coherent joint transmission (CJT).
3 . The method according to claim 1 , wherein the indication information is carried in a first medium access control control element (MAC CE), and the first MAC CE is configured to indicate at least one of the at least one joint TCI state or the at least one DL TCI state, wherein the TCI state indicated by the first MAC CE corresponds to a same codepoint, and an information domain corresponding to the codepoint is contained in first downlink control information (DCI).
4 . (canceled)
5 . The method according to claim 1 , wherein the indication information is carried in a second MAC CE, and the second MAC CE is configured to indicate at least one of the at least one joint TCI state or the at least one DL TCI state corresponding to a plurality of codepoints, respectively, and the method further comprises: receiving second DCI, wherein the second DCI is configured to indicate one codepoint of the plurality of codepoints.
6 . The method according to claim 1 , wherein the configuration information is carried in a radio resource control (RRC), and the RRC is configured to configure the PDSCH transmission manner.
7 . The method according to claim 6 , further comprising at least one of: receiving a third MAC CE, wherein the third MAC CE is configured to indicate a number of at least one of the joint TCI states or the DL TCI states corresponding to the PDSCH; or the third MAC CE is configured to indicate at least one of the at least one joint TCI state or the at least one DL TCI state, the TCI state indicated by the third MAC CE corresponds to a same codepoint, and an information domain corresponding to the codepoint is contained in third DCI; receiving fourth DCI, wherein the fourth DCI is configured to indicate a number of at least one of the joint TCI states or the DL TCI states corresponding to the PDSCH; or the fourth DCI is configured to indicate one codepoint, and the one codepoint corresponds to at least one of at least one joint TCI state or at least one DL TCI state of at least one of the joint TCI states or the DL TCI states indicated by the indication information; or receiving a fourth MAC CE and fifth DCI, wherein the fourth MAC CE is configured to indicate at least one first value, the first value is a candidate value for a number of at least one of the joint TCI states or the DL TCI states corresponding to the PDSCH, the fifth DCI is configured to indicate one codepoint, and the codepoint corresponds to one of the first value; or the fourth MAC CE is configured to indicate at least one of the at least one joint TCI state or the at least one DL TCI state corresponding to a plurality of codepoints, respectively, and the fifth DCI is configured to indicate one codepoint of the plurality of codepoints.
8 . - 9 . (canceled)
10 . The method according to claim 1 , wherein determining the TCI state configured for at least one of the PDCCH transmission or the downlink signal transmission from at least one of the at least one joint TCI state or the at least one DL TCI state comprises at least one of: determining a first TCI state of at least one of the at least one joint TCI state or the at least one DL TCI state indicated by the indication information as the TCI state configured for at least one of the PDCCH transmission or the downlink signal transmission based on at least one of a first signaling or a default rule sent by a network device; determining a first TCI state and a second TCI state of at least one of the at least one joint TCI state or the at least one DL TCI state indicated by the indication information as the TCI states configured for at least one of the PDCCH transmission the downlink signal transmission based on at least one of a second signaling or a default rule sent by a network device; determining one or two TCI states of first two TCI states of at least one of the at least one joint TCI state or the at least one DL TCI state indicated by the indication information as the TCI state configured for at least one of the PDCCH transmission or the downlink signal transmission based on at least one of a third signaling or a default rule sent by a network device; determining one or more TCI states of at least one of the at least one joint TCI state or the at least one DL TCI state indicated by the indication information as the TCI state configured for at least one of the PDCCH transmission or the downlink signal transmission based on at least one of a fourth signaling or a default rule sent by a network device; or determining a TCI state configured for the PDCCH transmission from at least one of the at least one joint TCI state or the at least one DL TCI state, and a TCI state configured to the downlink signal transmission from at least one of the at least one joint TCI state or the at least one DL TCI state, respectively.
11 . The method according to claim 10 , wherein at least one of the joint TCI state or the DL TCI state contains at least one of a quasi co-location (QCL) Type A or a QCL Type B; or at least one of the joint TCI state or the DL TCI state contains a quasi co-location type, and the quasi co-location type comprises at least one of following parameters: an average delay; a delay spread; a Doppler shift; or a Doppler spread.
12 . (canceled)
13 . The method according to claim 10 , wherein the first TCI state is a first TCI state of all TCI states indicated by the indication information; or the first TCI state is a first TCI state of TCI states containing a target QCL Type of all TCI states indicated by the indication information; and/or the second TCI state is a second TCI state of all TCI states indicated by the indication information; or the second TCI state is a second TCI state of TCI states containing a target QCL Type of all TCI states indicated by the indication information; and/or the first two TCI states are first two TCI states of all TCI states indicated by the indication information; or the first two TCI states are first two TCI states of TCI states containing a target QCL Type of all TCI states indicated by the indication information, wherein the target QCL Type contains a QCL Type A or a QCL Type B.
14 .- 17 . (canceled)
18 . The method according to claim 10 , wherein the first signaling, the second signaling, the third signaling or the fourth signaling comprises at least one of: an RRC; an MAC CE; or DCI.
19 . (canceled)
20 . The method according to claim 1 , wherein the downlink signal comprises at least one of: a channel state information reference signal (CSI-RS); a demodulation reference signal (DMRS); a positioning reference signal (PRS); or a tracking reference signal (TRS).
21 . A method for determining information, performed by a network device, comprising: sending configuration information and indication information to a terminal device, wherein the configuration information is configured to configure a physical downlink shared channel (PDSCH) transmission manner, and the indication information is configured to indicate at least one of_at least one joint transmission configuration indicator (TCI) state or at least one downlink (DL) TCI state.
22 . The method according to claim 21 , wherein the indication information is carried in a first medium access control control element (MAC CE), and the first MAC CE is configured to indicate at least one of the at least one joint TCI state or the at least one DL TCI state, wherein the TCI state indicated by the first MAC CE corresponds to a same codepoint, and an information domain corresponding to the codepoint is contained in first downlink control information (DCI).
23 . (canceled)
24 . The method according to claim 21 , wherein the indication information is carried in a second MAC CE, and the second MAC CE is configured to indicate at least one of the at least one joint TCI state or the at least one DL TCI state corresponding to a plurality of codepoints, respectively; and the method further comprising: sending second DCI, wherein the second DCI is configured to indicate one codepoint of the plurality of codepoints.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present application is a U.S. National Stage of International Application No. PCT/CN 2022/117887, filed on Sep. 8, 2022, the content of which is incorporated herein by reference in its entirety for all purposes. FIELD The present disclosure relates to the field of communication technology, and in particular to a method/apparatus/device for determining information and a storage medium. BACKGROUND In multiple-input multiple-output (MIMO) systems, coherent joint transmission (CJT), which is realized by multiple transmission reception points (TRPs) with ideal backhaul connections, is introduced. Further, a single-TRP (S-TRP) case has been considered for a unified transmission configuration indicator (TCI) state currently. Specifically, the unified TCI state is that the same set of TCI states is indicated for multiple channels/signals of a TRP, where the same set of TCI states may currently be indicated separately for uplink and downlink, i.e., respectively indicating the DL (downlink) TCI state and/or UL (uplink) TCI state, or jointly indicating uplink and downlink, i.e., indicating a joint TCI state. Further, the terminal device may be used based on the indicated DL TCI state and/or joint TCI state for physical downlink control channel (PDCCH) transmission, physical downlink shared channel (PDSCH) and/or downlink signal reception. In related art, MIMO currently supports CJT for up to 4 TRPs, then the network device indicates 3 or 4 TCI states to the terminal device. However, only manners for the terminal device to determine which TCI state to use for PDCCH transmission when the network device indicates 1 or 2 TCI states are currently discussed, and thus the manners in the related art cannot be applied to the determination process of the terminal device determining specifically which TCI state to use for PDCCH transmission in the scenario where the network device indicates 3 or 4 TCI states. SUMMARY In a first aspect, embodiments of the present disclosure provide a method for determining information, which is performed by a terminal device and includes: receiving configuration information and indication information, in which the configuration information is configured to configure a physical downlink shared channel (PDSCH) transmission manner, and the indication information is configured to indicate at least one of at least one joint transmission configuration indicator (TCI) state or at least one downlink (DL) TCI state; and in response to the PDSCH transmission manner configured by the configuration information being a target transmission manner, determining a TCI state configured for at least one of physical downlink control channel (PDCCH) transmission or downlink signal transmission from at least one of the at least one joint TCI state or the at least one DL TCI state. In a second aspect, embodiments of the present disclosure provide a method for determining information, which is performed by a network device and includes: sending configuration information and indication information, in which the configuration information is configured to configure a physical downlink shared channel (PDSCH) transmission manner, and the indication information is configured to indicate at least one of at least one joint transmission configuration indicator (TCI) state and/or at least one downlink (DL) TCI state. In a third aspect, embodiments of the present disclosure provide a communication device including a processor and a memory storing a computer program executable by the processor; and the processor is configured to: receive configuration information and indication information, wherein the configuration information is configured to configure a physical downlink shared channel (PDSCH) transmission manner, and the indication information is configured to indicate at least one of at least one joint transmission configuration indicator (TCI) state or at least one downlink (DL) TCI state; and in response to the PDSCH transmission manner configured by the configuration information being a target transmission manner, determine a TCI state configured for at least one of physical downlink control channel (PDCCH) transmission or downlink signal transmission from at least one of the at least one joint TCI state or the at least one DL TCI state. In a fourth aspect, embodiments of the present disclosure provide a communication device including a processor and a memory storing a computer program executable by the processor; and the processor is configured to perform the method in the second aspect described above. BRIEF DESCRIPTION OF THE DRAWINGS These and other aspects and advantages of embodiments of the present disclosure will become apparent and more readily appreciated from the following descriptions made with reference to the drawings, in which: FIG. 1 is a schematic diagram of an architecture of a communication system provided by an embodiment of the present disclosure; FIG. 2 is a