Wireless communication method and device
The embodiments of the present disclosure provide a wireless communication method and device, capable of completing an aperiodic sounding process corresponding to a 1T4R-type antenna switching within one slot, thereby reducing the sounding delay. The wireless communication method includes: receiving, by a terminal device, configuration information, the configuration information indicating G Sounding Reference Signal (SRS) resource sets, the G SRS resource sets including a first SRS resource set, where G is an integer and G≥1. A resource type configuration corresponding to the first SRS resource set is aperiodic, the first SRS resource set corresponds to a 1T4R-type antenna switching configuration, the four SRS resources in the first SRS resource set are on different symbols of a same slot, and the four SRS resources are 1-port SRS resources.
1 . A wireless communication method, comprising:
receiving, by a terminal device, configuration information, the configuration information indicating G Sounding Reference Signal (SRS) resource sets, the G SRS resource sets including a first SRS resource set, where G is an integer and G≥1,
wherein a resource type configuration corresponding to the first SRS resource set is aperiodic, the first SRS resource set corresponds to a 1T4R-type antenna switching configuration, four SRS resources in the first SRS resource set are on different symbols of a same slot, and the four SRS resources are 1-port SRS resources,
wherein the method further comprises:
transmitting, by the terminal device, second terminal capability information, the second terminal capability information indicating that the terminal device supports SRS transmission on last K symbols of a slot, where K is an integer greater than 6.
2 . The method according to claim 1 , wherein:
an interval between adjacent SRS resources among the 4 SRS resources is equal to Y symbols, where Y is an integer and Y≥1.
3 . The method according to claim 2 , wherein:
the symbols in the interval between the four SRS resources are not used for signal transmission.
4 . The method according to claim 2 , wherein
Y is for a part of P subcarrier spacings, each subcarrier spacing in the part of the P subcarrier spacings corresponding to a Y value, where P is an integer and P≥4.
5 . The method according to claim 4 , wherein the part of the P subcarrier spacings comprises the following four types:
15 kHz, 30 kHz, 60 kHz, and 120 kHz;
wherein 15 kHz corresponds to Y=1, 30 kHz corresponds to Y=1, 60 kHz corresponds to Y=1, and 120 kHz corresponds to Y=2.
6 . The method according to claim 2 , wherein
Y is pre-configured or agreed in a protocol, wherein a subcarrier spacing of 15 kHz corresponds to Y=1, a subcarrier spacing of 30 kHz corresponds to Y=1, a subcarrier spacing of 60 kHz corresponds to Y=1, and a subcarrier spacing of 120 kHz corresponds to Y=2; or
Y is determined according to a subcarrier spacing.
7 . The method according to claim 1 , further comprising:
transmitting, by the terminal device, first terminal capability information, the first terminal capability information indicating that the terminal device supports the 1T4R-type antenna switching.
8 . The method according to claim 7 , wherein the first terminal capability information further indicates that the terminal device supports at least one of the following types of antenna switching:
1T2R-type antenna switching, 1T1R-type antenna switching, 2T4R-type antenna switching, 1T6R-type antenna switching, 1T8R-type antenna switching, 2T8R-type antenna switching, 4T6R-type antenna switching, or 4T8R-type antenna switching.
9 . The method according to claim 1 , wherein:
the second terminal capability information is for non-shared spectrum channel access; or
the second terminal capability information is for licensed spectrum channel access.
10 . The method according to claim 1 , further comprising:
transmitting, by the terminal device, third terminal capability information, the third terminal capability information indicating that the terminal device supports transmission of an aperiodic SRS configuration corresponding to the 1T4R type within one slot.
11 . The method according to claim 1 , wherein
a part or all of SRS resources in each of the G SRS resource sets correspond to one of the following subcarrier spacings:
15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, 960 kHz, or 1920 kHz.
12 . The method according to claim 1 , wherein
SRS ports of different SRS resources in a same SRS resource set correspond to different terminal antenna ports.
13 . The method according to claim 1 , wherein said receiving, by the terminal device, the configuration information comprises:
receiving, by the terminal device, the configuration information transmitted by a first device,
wherein the first device comprises at least one of:
a network device or another terminal device.
14 . The method according to claim 1 , further comprising:
transmitting, by the terminal device, an SRS signal according to the configuration information.
15 . A wireless communication device, comprising a processor and a memory, wherein the memory has a computer program stored thereon, and the processor is configured to invoke and execute the computer program stored in the memory to:
receive configuration information, the configuration information indicating G Sounding Reference Signal (SRS) resource sets, the G SRS resource sets including a first SRS resource set, where G is an integer and G≥1,
wherein a resource type configuration corresponding to the first SRS resource set is aperiodic, the first SRS resource set corresponds to a 1T4R-type antenna switching configuration, four SRS resources in the first SRS resource set are on different symbols of a same slot, and the four SRS resources are 1-port SRS resources,
wherein the processor is configured to invoke and execute the computer program stored in the memory to:
transmit second terminal capability information, the second terminal capability information indicating that the terminal device supports SRS transmission on last K symbols of a slot, where K is an integer greater than 6.
16 . A wireless communication device, comprising a processor and a memory, wherein the memory has a computer program stored thereon, and the processor is configured to invoke and execute the computer program stored in the memory to:
transmit configuration information to a terminal device, the configuration information indicating G Sounding Reference Signal (SRS) resource sets, the G SRS resource sets including a first SRS resource set, where G is an integer and G≥1,
wherein a resource type configuration corresponding to the first SRS resource set is aperiodic, the first SRS resource set corresponds to a 1T4R-type antenna switching configuration, four SRS resources in the first SRS resource set are on different symbols of a same slot, and the four SRS resources are 1-port SRS resources,
wherein the processor is configured to invoke and execute the computer program stored in the memory to:
receive second terminal capability information, the second terminal capability information indicating that the terminal device supports SRS transmission on last K symbols of a slot, where K is an integer greater than 6.
17 . The wireless communication device according to claim 16 , wherein the processor is further configured to invoke and execute the computer program stored in the memory to: receive first terminal capability information transmitted by the terminal device, the first terminal capability information indicating that the terminal device supports the 1T4R-type antenna switching.
18 . The wireless communication device according to claim 16 , wherein the processor is further configured to invoke and execute the computer program stored in the memory to: receive third terminal capability information transmitted by the terminal device, the third terminal capability information indicating that the terminal device supports transmission of an aperiodic SRS configuration corresponding to the 1T4R type within one slot.