Beam indication method and apparatus, device, and medium
A beam indication method and apparatus, a device, and a medium. The method includes: receiving beam indication information transmitted by a network-side device, where the beam indication information is used to indicate a plurality of pieces of beam information of a channel or a reference signal, and the plurality of pieces of beam information correspond to different transmission and reception point TRP identification information; and transmitting the channel or the reference signal according to the beam indication information.
1. A beam indication method, comprising:
receiving beam indication information transmitted by a network-side device, wherein the beam indication information is used to indicate a plurality of pieces of beam information of a channel or a reference signal, and the plurality of pieces of beam information correspond to different transmission and reception point TRP identification information; and
transmitting the channel or the reference signal according to the beam indication information;
wherein the channel comprises a PUCCH; and the beam indication information comprises any one of the following:
a spatial relation information pool corresponding to all TRP identification information;
a spatial relation information pool corresponding to each piece of TRP identification information; and
spatial relation information pools corresponding to different cells, wherein each piece of TRP identification information corresponds to a spatial relation information pool corresponding to a cell to which the TRP identification information belongs;
or,
wherein the channel comprises a PDCCH; and the beam indication information comprises any one of the following:
a transmission configuration indication TCI state pool corresponding to all TRP identification information;
a TCI state pool corresponding to each piece of TRP identification information; and
TCI state pools corresponding to different cells, wherein each piece of TRP identification information corresponds to a TCI state pool corresponding to a cell to which the TRP identification information belongs;
wherein before the transmitting the channel or the reference signal according to the beam indication information, the method further comprises:
activating, from the TCI state pool, TCI state information corresponding to different TRP identification information;
wherein when the TCI state information is TCI state information of a PDCCH on a first bandwidth part of a first component carrier and activated by a media access control control element, the TCI state information is applied to a first PDCCH, wherein a control resource set in which the first PDCCH is located is a control resource set having a same control resource set identifier and corresponding to same TRP identification information as a control resource set in which the PDCCH is located, among all component carriers in a component carrier list in which the first component carrier is located; or a control resource set in which the first PDCCH is located is all control resource sets corresponding to same TRP identification information as a control resource set in which the PDCCH is located, among all component carriers in a component carrier list in which the first component carrier is located.
2. The method according to claim 1 , wherein before the transmitting the channel or the reference signal according to the beam indication information, the method further comprises:
activating, from the spatial relation information pool, spatial relation information corresponding to different TRP identification information.
3. The method according to claim 2 , wherein the activating, from the spatial relation information pool, spatial relation information corresponding to different TRP identification information comprises:
activating, from the spatial relation information pool, spatial relation information comprising a plurality of source reference signals, wherein the plurality of source reference signals correspond to different TRP identification information; or
activating a plurality of pieces of spatial relation information from the spatial relation information pool, wherein the plurality of pieces of spatial relation information correspond to different TRP identification information.
4. The method according to claim 2 , wherein when the spatial relation information is spatial relation information of a first PUCCH corresponding to second TRP identification information and activated by a media access control control element, the spatial relation information is applied to all PUCCHs corresponding to the second TRP identification information.
5. The method according to claim 4 , wherein the first PUCCH comprises:
any PUCCH corresponding to the second TRP identification information; or
a PUCCH having a preset PUCCH resource identifier and corresponding to the second TRP identification information.
6. The method according to claim 1 , further comprising:
if the beam indication information does not comprise spatial relation information of the PUCCH, determining the spatial relation information of the PUCCH based on default TCI state information or quasi-co-location information corresponding to preset TRP identification information.
7. The method according to claim 6 , wherein the preset TRP identification information comprises:
TRP identification information associated with a PUCCH resource.
8. The method according to claim 6 , wherein the default TCI state information or the quasi-co-location information comprises:
TCI state information or quasi-co-location information of a control resource set having a smallest control resource set identifier and corresponding to the preset TRP identification information; or
TCI state information having a smallest TCI state identifier in a group of activated TCI state information corresponding to the preset TRP identification information; or
TCI state information corresponding to a lowest codepoint in a TCI field of DCI; or
TCI state information corresponding to a lowest codepoint among codepoints containing one piece of TCI state information in a TCI field of DCI; or
TCI state information corresponding to a lowest codepoint among codepoints containing a plurality of pieces of TCI state information in a TCI field of DCI.
9. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein
when the processor executes the computer program, the following steps are implemented:
receiving beam indication information transmitted by a network-side device, wherein the beam indication information is used to indicate a plurality of pieces of beam information of a channel or a reference signal, and the plurality of pieces of beam information correspond to different transmission and reception point TRP identification information; and
transmitting the channel or the reference signal according to the beam indication information;
wherein the channel comprises a PUCCH; and the beam indication information comprises any one of the following:
a spatial relation information pool corresponding to all TRP identification information;
a spatial relation information pool corresponding to each piece of TRP identification information; and
spatial relation information pools corresponding to different cells, wherein each piece of TRP identification information corresponds to a spatial relation information pool corresponding to a cell to which the TRP identification information belongs;
or,
wherein the channel comprises a PDCCH; and the beam indication information comprises any one of the following:
a transmission configuration indication TCI state pool corresponding to all TRP identification information;
a TCI state pool corresponding to each piece of TRP identification information; and
TCI state pools corresponding to different cells, wherein each piece of TRP identification information corresponds to a TCI state pool corresponding to a cell to which the TRP identification information belongs;
wherein before the transmitting the channel or the reference signal according to the beam indication information, the method further comprises:
activating, from the TCI state pool, TCI state information corresponding to different TRP identification information;
wherein when the TCI state information is TCI state information of a PDCCH on a first bandwidth part of a first component carrier and activated by a media access control control element, the TCI state information is applied to a first PDCCH, wherein a control resource set in which the first PDCCH is located is a control resource set having a same control resource set identifier and corresponding to same TRP identification information as a control resource set in which the PDCCH is located, among all component carriers in a component carrier list in which the first component carrier is located; or a control resource set in which the first PDCCH is located is all control resource sets corresponding to same TRP identification information as a control resource set in which the PDCCH is located, among all component carriers in a component carrier list in which the first component carrier is located.
10. The terminal device according to claim 9 , wherein before the transmitting the channel or the reference signal according to the beam indication information, the method further comprises:
activating, from the spatial relation information pool, spatial relation information corresponding to different TRP identification information.
11. The terminal device according to claim 10 , wherein the activating, from the spatial relation information pool, spatial relation information corresponding to different TRP identification information comprises:
activating, from the spatial relation information pool, spatial relation information comprising a plurality of source reference signals, wherein the plurality of source reference signals correspond to different TRP identification information; or
activating a plurality of pieces of spatial relation information from the spatial relation information pool, wherein the plurality of pieces of spatial relation information correspond to different TRP identification information.
12. The terminal device according to claim 10 , wherein when the spatial relation information is spatial relation information of a first PUCCH corresponding to second TRP identification information and activated by a media access control control element, the spatial relation information is applied to all PUCCHs corresponding to the second TRP identification information.
13. The terminal device according to claim 12 , wherein the first PUCCH comprises:
any PUCCH corresponding to the second TRP identification information; or
a PUCCH having a preset PUCCH resource identifier and corresponding to the second TRP identification information.
14. The terminal device according to claim 9 , further comprising:
if the beam indication information does not comprise spatial relation information of the PUCCH, determining the spatial relation information of the PUCCH based on default TCI state information or quasi-co-location information corresponding to preset TRP identification information.
15. A network-side device, comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein
when the processor executes the computer program, the following steps are implemented:
transmitting beam indication information to a terminal device, so that the terminal device transmits a channel or a reference signal according to the beam indication information, wherein the beam indication information is used to indicate a plurality of pieces of beam information of the channel or the reference signal, and the plurality of pieces of beam information correspond to different TRP identification information;
wherein the channel comprises a PUCCH; and the beam indication information comprises any one of the following:
a spatial relation information pool corresponding to all TRP identification information;
a spatial relation information pool corresponding to each piece of TRP identification information; and
spatial relation information pools corresponding to different cells, wherein each piece of TRP identification information corresponds to a spatial relation information pool corresponding to a cell to which the TRP identification information belongs;
or,
wherein the channel comprises a PDCCH; and the beam indication information comprises any one of the following:
a transmission configuration indication TCI state pool corresponding to all TRP identification information;
a TCI state pool corresponding to each piece of TRP identification information; and
TCI state pools corresponding to different cells, wherein each piece of TRP identification information corresponds to a TCI state pool corresponding to a cell to which the TRP identification information belongs;
wherein before the transmitting the channel or the reference signal according to the beam indication information, the method further comprises:
activating, from the TCI state pool, TCI state information corresponding to different TRP identification information;
wherein when the TCI state information is TCI state information of a PDCCH on a first bandwidth part of a first component carrier and activated by a media access control control element, the TCI state information is applied to a first PDCCH, wherein a control resource set in which the first PDCCH is located is a control resource set having a same control resource set identifier and corresponding to same TRP identification information as a control resource set in which the PDCCH is located, among all component carriers in a component carrier list in which the first component carrier is located; or a control resource set in which the first PDCCH is located is all control resource sets corresponding to same TRP identification information as a control resource set in which the PDCCH is located, among all component carriers in a component carrier list in which the first component carrier is located.
16. The network-side device according to claim 15 , further comprises:
spatial relation information corresponding to different TRP identification information is activated from the spatial relation information pool.
17. The network-side device according to claim 16 , further comprises:
spatial relation information comprising a plurality of source reference signals is activated from the spatial relation information pool, wherein the plurality of source reference signals correspond to different TRP identification information; or
a plurality of pieces of spatial relation information is activated from the spatial relation information pool, wherein the plurality of pieces of spatial relation information correspond to different TRP identification information.
18. The network-side device according to claim 16 , wherein when the spatial relation information is spatial relation information of a first PUCCH corresponding to second TRP identification information and activated by a media access control control element, the spatial relation information is applied to all PUCCHs corresponding to the second TRP identification information.
19. The network-side device according to claim 18 , wherein the first PUCCH comprises:
any PUCCH corresponding to the second TRP identification information; or
a PUCCH having a preset PUCCH resource identifier and corresponding to the second TRP identification information.
20. The network-side device according to claim 15 , further comprising:
if the beam indication information does not comprise spatial relation information of the PUCCH, the spatial relation information of the PUCCH is determined based on default TCI state information or quasi-co-location information corresponding to preset TRP identification information.