Reference signal resource configuration method and apparatus
The present disclosure relates to reference signal resource configuration methods and apparatus. In one example reference signal resource configuration method, a terminal receives sounding reference signal (SRS) resource configuration information from a base station. In response to determining that at least two SRS resources indicated by the SRS resource configuration information are located on a same orthogonal frequency division multiplexing (OFDM) symbol, the terminal maps one of the at least two SRS resources to the OFDM symbol.
1. A sounding reference signal (SRS) resource configuration method, comprising:
receiving, by a terminal, SRS resource configuration information from a base station; and
in response to determining that at least two SRS resources indicated by the SRS resource configuration information are located on a same orthogonal frequency division multiplexing (OFDM) symbol, mapping, by the terminal, one of the at least two SRS resources to the OFDM symbol, wherein the at least two SRS resources include at least one SRS resource configured by the base station for positioning.
2. The method according to claim 1 , wherein:
a first SRS resource of the at least two SRS resources is used for a first purpose, and a second SRS resource of the at least two SRS resources is used for a second purpose; or
the at least two SRS resources are all used for a second purpose, and the terminal maps, to the OFDM symbol, one of the at least two SRS resources used for the second purpose; and
wherein the first purpose comprises any one of beam management, antenna switching, codebook transmission, and non-codebook transmission, and the second purpose comprises positioning.
3. The method according to claim 1 , wherein
when the SRS resource used for positioning and the SRS resource used for another purpose have a same time domain behavior, mapping, to the OFDM symbol, only the SRS resource used for another purpose; or
when the SRS resource used for positioning and the SRS resource used for another purpose have a same time domain behavior, mapping, to the OFDM symbol, only the SRS resource used for positioning; or
when the SRS resource used for positioning and the SRS resource used for another purpose have different time domain behaviors, mapping a SRS resource with a higher time domain behavior to the OFDM symbol.
4. The method according to claim 1 , wherein a quantity of SRS resources indicated by the SRS resource configuration information does not exceed capability information of the terminal.
5. A sounding reference signal (SRS) resource configuration method, comprising:
sending, by a base station, SRS resource configuration information to a terminal, wherein at least two SRS resources indicated by the SRS resource configuration information are located on a same orthogonal frequency division multiplexing (OFDM) symbol, and the at least two SRS resources include at least one SRS resource configured by the base station for positioning; and
receiving, by the base station, one of the at least two SRS resources sent by the terminal on the OFDM symbol.
6. The method according to claim 5 , wherein:
a first SRS resource of the at least two SRS resources is used for a first purpose, and a second SRS resource of the at least two SRS resources is used for a second purpose; or
the at least two SRS resources are all used for a second purpose, and the terminal maps, to the OFDM symbol, one of the at least two SRS resources used for the second purpose; and
wherein the first purpose comprises any one of beam management, antenna switching, codebook transmission, and non-codebook transmission, and the second purpose comprises positioning.
7. The method according to claim 5 , wherein
when the SRS resource used for positioning and the SRS resource used for another purpose have a same time domain behavior, mapping, to the OFDM symbol, only the SRS resource used for another purpose; or
when the SRS resource used for positioning and the SRS resource used for another purpose have a same time domain behavior, mapping, to the OFDM symbol, only the SRS resource used for positioning; or
when the SRS resource used for positioning and the SRS resource used for another purpose have different time domain behaviors, mapping a SRS resource with a higher time domain behavior to the OFDM symbol.
8. The method according to claim 5 , wherein a quantity of SRS resources indicated by the SRS resource configuration information does not exceed capability information of the terminal.
9. A terminal, comprising:
a transceiver, the transceiver configured to receive sounding reference signal (SRS) resource configuration information from a base station;
at least one processor; and
one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to: in response to determining that at least two SRS resources indicated by the SRS resource configuration information are located on a same orthogonal frequency division multiplexing (OFDM) symbol, map one of the at least two SRS resources to the OFDM symbol, wherein the at least two SRS resources include at least one SRS resource configured by the base station for positioning.
10. The terminal according to claim 9 , wherein:
a first SRS resource of the at least two SRS resources is used for a first purpose, and a second SRS resource of the at least two SRS resources is used for a second purpose; or
the at least two SRS resources are all used for a second purpose, and the terminal maps, to the OFDM symbol, one of the at least two SRS resources used for the second purpose; and
wherein the first purpose comprises any one of beam management, antenna switching, codebook transmission, and non-codebook transmission, and the second purpose comprises positioning.
11. The terminal according to claim 9 , wherein the programming instructions for execution by the at least one processor to:
when the SRS resource used for positioning and the SRS resource used for another purpose have a same time domain behavior, map, to the OFDM symbol, only the SRS resource used for another purpose; or
when the SRS resource used for positioning and the SRS resource used for another purpose have a same time domain behavior, mapping, to the OFDM symbol, only the SRS resource used for positioning; or
when the SRS resource used for positioning and the SRS resource used for another purpose have different time domain behaviors, mapping a SRS resource with a higher time domain behavior to the OFDM symbol.
12. The terminal according to claim 9 , wherein a quantity of SRS resources indicated by the SRS resource configuration information does not exceed capability information of the terminal.
13. The base station according to claim 9 , wherein the programming instructions for execution by the at least one processor to:
when the SRS resource used for positioning and the SRS resource used for another purpose have a same time domain behavior, map, to the OFDM symbol, only the SRS resource used for another purpose; or
when the SRS resource used for positioning and the SRS resource used for another purpose have a same time domain behavior, mapping, to the OFDM symbol, only the SRS resource used for positioning; or
when the SRS resource used for positioning and the SRS resource used for another purpose have different time domain behaviors, mapping a SRS resource with a higher time domain behavior to the OFDM symbol.
14. A base station, comprising:
a transceiver;
at least one processor; and
one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to cause the transceiver to:
send sounding reference signal (SRS) resource configuration information to a terminal, wherein at least two SRS resources indicated by the SRS resource configuration information are located on a same orthogonal frequency division multiplexing (OFDM) symbol, and the at least two SRS resources include at least one SRS resource configured by the base station for positioning; and
receive one of the at least two SRS resources sent by the terminal on the OFDM symbol.
15. The base station according to claim 14 , wherein:
a first SRS resource of the at least two SRS resources is used for a first purpose, and a second SRS resource of the at least two SRS resources is used for a second purpose; or
the at least two SRS resources are all used for a second purpose, and the terminal maps, to the OFDM symbol, one of the at least two SRS resources used for the second purpose; and
wherein the first purpose comprises any one of beam management, antenna switching, codebook transmission, and non-codebook transmission, and the second purpose comprises positioning.
16. The base station according to claim 14 , wherein a quantity of SRS resources indicated by the SRS resource configuration information does not exceed capability information of the terminal.