Data transmission method and apparatus
A data transmission method and an apparatus are disclosed. The method includes that a base station sends configuration information to UE. The UE receives the configuration information, where the configuration information includes an association relationship between a first SRS configuration and one or more PUSCH configurations, and a first BWP in which the first SRS configuration is located is different from a BWP in which each PUSCH configuration is located. The UE sends a first SRS on the first BWP based on the first SRS configuration, and sends a first PUSCH based on a first PUSCH configuration, where the first PUSCH configuration is one of the one or more PUSCH configurations. Correspondingly, the base station receives the first SRS based on the first SRS configuration, and receives the first PUSCH based on the first PUSCH configuration.
1 . A data transmission method, comprising:
receiving configuration information, wherein the configuration information comprises an association relationship between a first sounding reference signal (SRS) configuration and one or more physical uplink shared channel (PUSCH) configurations, and a first bandwidth part (BWP) in which the first SRS configuration is located is different from a BWP in which each of the one or more PUSCH configurations is located;
sending a first SRS on the first BWP based on the first SRS configuration; and
sending a first PUSCH based on a first PUSCH configuration in the one or more PUSCH configurations,
wherein the sending a first SRS on the first BWP based on the first SRS configuration comprises:
switching from a second BWP to the first BWP and sending the first SRS on the first BWP based on the first SRS configuration, wherein the second BWP is one of BWPs in which the one or more PUSCH configurations are located, and a transmission power adjustment value of the first SRS is related to a transmission power adjustment value indicated by a transmission power control (TPC) command value carried in DCI corresponding to one or more PUSCHs on the second BWP.
2 . The method according to claim 1 , wherein the first SRS is a positioning signal.
3 . The method according to claim 1 , wherein the sending a first PUSCH comprises:
sending the first PUSCH through an antenna port that is the same as that of the first SRS; and/or
sending the first PUSCH by using an open-loop power control parameter that is the same as that of the first SRS.
4 . The method according to claim 1 , wherein the first PUSCH configuration is further associated with a second SRS configuration, and the method further comprises:
receiving first DCI, wherein the first DCI carries first indication information indicating that the first PUSCH is associated with the first SRS configuration or is associated with the second SRS configuration.
5 . The method according to claim 4 , wherein the first SRS configuration comprises configuration information of a plurality of SRS resources, the first DCI further carries a sounding reference signal resource indicator (SRI), and the SRI indicates an SRS resource, in the plurality of SRS resources, that is associated with the first PUSCH.
6 . The method according to claim 5 , wherein the SRI further indicates an open-loop power control parameter and/or a closed-loop power control status of the first PUSCH.
7 . The method according to claim 1 , wherein DCI corresponding to a PUSCH on the second BWP is not DCI used to schedule a PUSCH.
8 . The method according to claim 1 , wherein each of the one or more PUSCH configurations on the second BWP corresponds to one or more pieces of DCI.
9 . The method according to claim 1 , wherein
a transmission power adjustment value of the first SRS is related to a transmission power adjustment value indicated by a TPC command value carried in DCI received on a BWP corresponding to one or more BWPs in which the one or more PUSCH configurations are located; or
a transmission power adjustment value of the first SRS is related to a transmission power adjustment value indicated by a TPC command value carried in DCI received by a terminal device on one or more configured carriers (CCs).
10 . A communication apparatus, comprising:
a receiver, configured to receive configuration information, wherein the configuration information comprises an association relationship between a first sounding reference signal (SRS) configuration and one or more physical uplink shared channel (PUSCH) configurations, and a first bandwidth part (BWP) in which the first SRS configuration is located is different from a BWP in which each of the one or more PUSCH configurations is located; and
a sender, configured to: send a first SRS on the first BWP based on the first SRS configuration; and send a first PUSCH based on a first PUSCH configuration in the one or more PUSCH configurations,
wherein the apparatus further comprises a processor, and
the sender is further configured to: switch from a second BWP to the first BWP by using the processor, and send the first SRS on the first BWP based on the first SRS configuration, wherein the second BWP is one of BWPs in which the one or more PUSCH configurations are located, and a transmission power adjustment value of the first SRS is related to a transmission power adjustment value indicated by a TPC command value carried in DCI corresponding to one or more PUSCHs on the second BWP.
11 . The apparatus according to claim 10 , wherein the first SRS is a positioning signal.
12 . The apparatus according to claim 10 , wherein
the sender is further configured to: send the first PUSCH through an antenna port that is the same as that of the first SRS; and/or send the first PUSCH by using an open-loop power control parameter that is the same as that of the first SRS.
13 . The apparatus according to claim 10 , wherein the first PUSCH configuration is further associated with a second SRS configuration; and
the receiver is further configured to receive first DCI, wherein the first DCI carries first indication information indicating that the first PUSCH is associated with the first SRS configuration or is associated with the second SRS configuration.
14 . The apparatus according to claim 13 , wherein the first SRS configuration comprises configuration information of a plurality of SRS resources, the first DCI further carries a sounding reference signal resource indicator (SRI), and the SRI indicates an SRS resource, in the plurality of SRS resources, that is associated with the first PUSCH.
15 . The apparatus according to claim 14 , wherein the SRI further indicates an open-loop power control parameter and/or a closed-loop power control status of the first PUSCH.
16 . The apparatus according to claim 10 , wherein DCI corresponding to a PUSCH on the second BWP is not DCI used to schedule a PUSCH.
17 . The apparatus according to claim 10 , wherein each of the one or more PUSCH configurations on the second BWP corresponds to one or more pieces of DCI.
18 . The apparatus according to claim 10 , wherein
a transmission power adjustment value of the first SRS is related to a transmission power adjustment value indicated by a TPC command value carried in DCI received on a BWP corresponding to one or more BWPs in which the one or more PUSCH configurations are located; or
a transmission power adjustment value of the first SRS is related to a transmission power adjustment value indicated by a TPC command value carried in DCI received by a terminal device on one or more configured carriers (CCs).
19 . A non-transitory computer readable storage medium storing a computer program including instructions that, when executed by at least one processor, cause the at least one processor to perform operations comprising:
receiving configuration information, wherein the configuration information comprises an association relationship between a first sounding reference signal (SRS) configuration and one or more physical uplink shared channel (PUSCH) configurations, and a first bandwidth part (BWP) in which the first SRS configuration is located is different from a BWP in which each of the one or more PUSCH configurations is located;
sending a first SRS on the first BWP based on the first SRS configuration; and
sending a first PUSCH based on a first PUSCH configuration in the one or more PUSCH configurations,
wherein the sending a first SRS on the first BWP based on the first SRS configuration comprises:
switching from a second BWP to the first BWP, and sending the first SRS on the first BWP based on the first SRS configuration, wherein the second BWP is one of BWPs in which the one or more PUSCH configurations are located, and a transmission power adjustment value of the first SRS is related to a transmission power adjustment value indicated by a transmission power control (TPC) command value carried in DCI corresponding to one or more PUSCHs on the second BWP.
20 . The non-transitory computer readable storage medium according to claim 19 , wherein the first SRS is a positioning signal.