Channel information sending method, channel information receiving method, and related device
A channel information sending method, a channel information receiving method, and a terminal are provided. The channel information sending method includes: receiving a first downlink grant. The first downlink grant is used to indicate reporting of Channel State Information (CSI). The method further includes sending a CSI report on a target Physical Uplink Shared Channel (PUSCH) resource.
1 . A channel information sending method, comprising:
receiving, by a terminal, a first downlink grant, wherein the first downlink grant is used to indicate reporting of Channel State Information (CSI); and
sending, by the terminal, a CSI report on a target Physical Uplink Shared Channel (PUSCH) resource,
wherein: a time domain resource of the target PUSCH resource is determined based on a first time domain resource determined based on P reference time moments and Q time domain offsets, and the Q time domain offsets are determined by at least one of the following: first downlink grant indication, Radio Resource Control (RRC) signaling configuration, or predefinition in a protocol, wherein P and Q are positive integers,
wherein the first time domain resource is determined when at least one of the following is satisfied:
the first time domain resource is located after a first reference time moment, and there is a first time domain offset between the first time domain resource and the first reference time moment, the first reference time moment is a last reference time moment of T reference time moments after being sequentially arranged in chronological order, and the first time domain offset is a largest time domain offset in S time domain offsets, or a sum of the S time domain offsets, or
the first time domain resource is a last time domain resource of L time domain resources after being sequentially arranged in chronological order, each time domain resource in the L time domain resources is determined based on at least one reference time moment in the T reference time moments and at least one time domain offset in the S time domain offsets, and reference time moments or time domain offsets corresponding to different time domain resources are different,
wherein:
the T reference time moments are T reference time moments in the P reference time moments, and T is a positive integer less than or equal to P; and
the S time domain offsets are S time domain offsets in the Q time domain offsets, S is a positive integer less than or equal to Q, and L is an integer greater than or equal to S or T.
2 . The channel information sending method according to claim 1 , wherein a transmission parameter of the target PUSCH resource is determined by at least one of the following: the first downlink grant indication, the RRC signaling configuration, or the predefinition in the protocol.
3 . The channel information sending method according to claim 1 , wherein the Q time domain offsets are determined based on a processing time, and
the processing time is: a time for which the CSI is calculated, or a time for which a Physical Downlink Shared Channel (PDSCH) is processed.
4 . The channel information sending method according to claim 1 , wherein the P reference time moments comprise at least one of the following:
a time moment at which the first downlink grant is received,
a time moment at which Hybrid Automatic Repeat Request (HARQ) feedback information is transmitted, wherein the HARQ feedback information is HARQ feedback information corresponding to a Physical Downlink Shared Channel (PDSCH) of first downlink grant scheduling, or
a time moment at which a first reference signal is received, wherein the first reference signal is a reference signal corresponding to the CSI report.
5 . The channel information sending method according to claim 1 , wherein the time domain resource of the target PUSCH resource is the first available uplink time domain resource after the first time domain resource.
6 . The channel information sending method according to claim 1 , wherein the target PUSCH resource is any one of the following:
a PUSCH resource corresponding to identification information of first downlink grant indication,
a PUSCH resource associated with the CSI report, or
a PUSCH resource determined by the terminal based on a magnitude of load of the CSI report.
7 . The channel information sending method according to claim 1 , wherein a Channel Quality Indicator (CQI) comprised in the CSI report comprises at least one of the following: N CQIs with largest values in R CQIs, a variance of the R CQIs, or M CQIs with smallest values in the R CQIs, and
the CQI is a CQI of a subband, R is equal to a quantity of subbands, and both N and M are positive integers less than or equal to R.
8 . A channel information receiving method, comprising:
sending, by a network side device, a first downlink grant, wherein the first downlink grant is used to indicate reporting of Channel State Information (CSI), and
receiving, by the network side device, a CSI report on a target Physical Uplink Shared Channel (PUSCH) resource,
wherein a time domain resource of the target PUSCH resource is determined based on a first time domain resource determined based on P reference time moments and Q time domain offsets, and the Q time domain offsets are determined by at least one of the following: first downlink grant indication, Radio Resource Control (RRC) signaling configuration, or predefinition in a protocol, wherein P and Q are positive integers,
wherein the first time domain resource is determined when at least one of the following is satisfied:
the first time domain resource is located after a first reference time moment, and there is a first time domain offset between the first time domain resource and the first reference time moment, the first reference time moment is a last reference time moment of T reference time moments after being sequentially arranged in chronological order, and the first time domain offset is a largest time domain offset in S time domain offsets, or a sum of the S time domain offsets, or
the first time domain resource is a last time domain resource of L time domain resources after being sequentially arranged in chronological order, each time domain resource in the L time domain resources is determined based on at least one reference time moment in the T reference time moments and at least one time domain offset in the S time domain offsets, and reference time moments and/or time domain offsets corresponding to different time domain resources are different,
wherein:
the T reference time moments are T reference time moments in the P reference time moments, and T is a positive integer less than or equal to P; and
the S time domain offsets are S time domain offsets in the Q time domain offsets, S is a positive integer less than or equal to Q, and L is an integer greater than or equal to S or T.
9 . The channel information receiving method according to claim 8 , wherein a transmission parameter of the target PUSCH resource is determined by at least one of the following: the first downlink grant indication; the RRC signaling configuration; or the predefinition in the protocol.
10 . The channel information receiving method according to claim 8 , wherein the Q time domain offsets are determined based on a processing time, and
the processing time is: a time for which the CSI is processed, or a time for which a Physical Downlink Shared Channel (PDSCH) is processed.
11 . The channel information receiving method according to claim 8 , wherein the P reference time moments comprise at least one of the following:
a time moment at which the first downlink grant is received;
a time moment at which Hybrid Automatic Repeat Request (HARQ) feedback information is transmitted, wherein the HARQ feedback information is HARQ feedback information corresponding to a Physical Downlink Shared Channel (PDSCH) of first downlink grant scheduling; or
a time moment at which a first reference signal is received, wherein the first reference signal is a reference signal corresponding to the CSI report.
12 . The channel information receiving method according to claim 8 , wherein the time domain resource of the target PUSCH resource is the first available uplink time domain resource after the first time domain resource.
13 . The channel information receiving method according to claim 8 , wherein the target PUSCH resource is any one of the following:
a PUSCH resource corresponding to identification information of first downlink grant indication,
a PUSCH resource associated with the CSI report, or
a PUSCH resource determined by a terminal based on a magnitude of load of the CSI report.
14 . The channel information receiving method according to claim 8 , wherein a Channel Quality Indicator (CQI) comprised in the CSI report comprises at least one of the following: N CQIs with largest values in R CQIs, a variance of the R CQIs, or M CQIs with smallest values in the R CQIs, and
the CQI is a CQI of a subband, R is equal to a quantity of subbands, and both N and M are positive integers less than or equal to R.
15 . A terminal, comprising a processor; and a memory having a computer program or an instruction stored thereon, wherein the computer program or the instruction, when executed by the processor, causes a channel information sending method, comprising:
receiving, by a terminal, a first downlink grant, wherein the first downlink grant is used to indicate reporting of Channel State Information (CSI); and
sending, by the terminal, a CSI report on a target Physical Uplink Shared Channel (PUSCH) resource,
wherein a time domain resource of the target PUSCH resource is determined based on a first time domain resource determined based on P reference time moments and Q time domain offsets, and the Q time domain offsets are determined by at least one of the following: first downlink grant indication, Radio Resource Control (RRC) signaling configuration, or predefinition in a protocol, wherein P and Q are positive integers,
wherein the first time domain resource is determined when at least one of the following is satisfied:
the first time domain resource is located after a first reference time moment, and there is a first time domain offset between the first time domain resource and the first reference time moment, the first reference time moment is a last reference time moment of T reference time moments after being sequentially arranged in chronological order, and the first time domain offset is a largest time domain offset in S time domain offsets, or a sum of the S time domain offsets, or
the first time domain resource is a last time domain resource of L time domain resources after being sequentially arranged in chronological order, each time domain resource in the L time domain resources is determined based on at least one reference time moment in the T reference time moments and at least one time domain offset in the S time domain offsets, and reference time moments or time domain offsets corresponding to different time domain resources are different,
wherein:
the T reference time moments are T reference time moments in the P reference time moments, and T is a positive integer less than or equal to P; and
the S time domain offsets are S time domain offsets in the Q time domain offsets, S is a positive integer less than or equal to Q, and L is an integer greater than or equal to S or T.
16 . The terminal according to claim 15 , wherein a transmission parameter of the target PUSCH resource is determined by at least one of the following: the first downlink grant indication, the RRC signaling configuration, or the predefinition in the protocol.