Information transmission method and communications device
This disclosure discloses an information transmission method and a communications device. The method includes: obtaining a reference object group containing at least two reference objects, where the reference objects contained in the reference object group are quasi co-located; and performing information transmission based on the reference object group.
1. An information transmission method, performed by a receive end being a terminal, comprising:
receiving spatial information of at least two reference objects from a network device, wherein the spatial information comprises spatial grouping factor;
determining that the reference objects having the same modulo result with respect to the spatial grouping factor are quasi co-located; and
performing information transmission based on the reference objects which are quasi co-located.
2. The information transmission method according to claim 1 , wherein the spatial information further comprises spatial index information, and the reference objects are indicated by reference index information and/or time domain position information.
3. The information transmission method according to claim 1 , wherein the reference objects comprise an SSB, the SSB is indicated by an SSB index, SSB indexes corresponding to a same spatial index are quasi co-located, wherein the spatial index=SSB index mod M, M is a value range of the spatial grouping factor, and a range of M is {1, 2, 4, 8}.
4. The information transmission method according to claim 1 , wherein the step of performing information transmission based on the reference objects which are quasi co-located comprises:
determining an available random access resource based on a first correspondence between the reference objects and random access resources; and performing a random access procedure on the available random access resource;
or
the step of performing information transmission based on the reference objects which are quasi co-located further comprises:
determining a target monitoring occasion based on information about a second correspondence between the reference objects and monitoring occasions; and monitoring downlink information within the target monitoring occasion;
or
the step of performing information transmission based on the reference objects which are quasi co-located further comprises:
performing rate matching or puncturing on target transmission information based on the reference objects and transmitting the rate-matched or punctured target transmission information, wherein the target transmission information is different from the reference objects contained in the reference objects.
5. The information transmission method according to claim 4 , wherein the first correspondence comprises at least one of the following:
information about a quantity of random access resources corresponding to the reference objects;
information about preambles corresponding to the reference objects in the random access resources, wherein the information about preambles is used to indicate at least one of a preamble for contention-based random access, a preamble for contention-free random access, a preamble for a system information (SI) request, a preamble for beam failure recovery BFR, or a preamble for a specified group;
power parameters of the random access resources; or
a measurement threshold for the reference objects.
6. The information transmission method according to claim 4 , wherein the second correspondence comprises:
information about a quantity of monitoring occasions corresponding to the reference objects.
7. The information transmission method according to claim 4 , wherein the step of performing rate matching or puncturing on target transmission information based on the reference objects comprises:
when a resource for at least one reference object in the reference objects and a resource for the target transmission information at least partially overlap, performing rate matching or puncturing on the target transmission information based on one of the following preset modes:
wherein the preset modes comprise: transmitting a reference object in the reference objects on an overlapping resource; or transmitting the target transmission information on the overlapping resource.
8. The information transmission method according to claim 1 , wherein the reference objects having the same modulo result with respect to the spatial grouping factor are quasi co-located comprises:
the reference objects having the same modulo result with respect to the spatial grouping factor are quasi co-located with respect to QCL-TypeA, and QCL-TypeD.
9. A communications device, performed by a receive end being a terminal, comprising a processor, a memory, and a computer program stored in the memory and running on the processor, wherein the processor executes the computer program to:
receive spatial information of at least two reference objects from a network device, wherein the spatial information comprises spatial grouping factor;
determine that the reference objects having the same modulo result with respect to the spatial grouping factor are quasi co-located; and
perform information transmission based on the reference objects which are quasi co-located.
10. The communications device according to claim 9 , wherein
the spatial information further comprises spatial index information, and the reference objects are indicated by reference index information and/or time domain position information.
11. The communications device according to claim 9 , wherein the reference objects comprise an SSB, the SSB is indicated by an SSB index, SSB indexes corresponding to a same spatial index are quasi co-located, wherein the spatial index=SSB index mod M, M is a value range of the spatial grouping factor, and a range of M is {1, 2, 4, 8}.
12. The communications device according to claim 9 , wherein the processor executes the computer program to:
determine an available random access resource based on a first correspondence between the reference objects and random access resources; and
perform a random access procedure on the available random access resource;
or
determine a target monitoring occasion based on information about a second correspondence between the reference objects and monitoring occasions; and monitor downlink information within the target monitoring occasion;
or
perform rate matching or puncturing on target transmission information based on the reference objects and transmit the rate-matched or punctured target transmission information, wherein the target transmission information is different from the reference objects contained in the reference objects.
13. The communications device according to claim 12 , wherein the first correspondence comprises at least one of the following:
information about a quantity of random access resources corresponding to the reference objects;
information about preambles corresponding to the reference objects in the random access resources, wherein the information about preambles is used to indicate at least one of a preamble for contention-based random access, a preamble for contention-free random access, a preamble for a system information (SI) request, a preamble for beam failure recovery (BFR), or a preamble for a specified group;
power parameters of the random access resources; or
a measurement threshold for the reference objects.
14. The communications device according to claim 12 , wherein the second correspondence comprises:
information about a quantity of monitoring occasions corresponding to the reference objects.
15. The communications device according to claim 12 , wherein the processor executes the computer program to:
when a resource for at least one reference object in the reference objects and a resource for the target transmission information at least partially overlap, perform rate matching or puncturing on the target transmission information based on one of the following preset modes:
wherein the preset modes comprise: transmitting a reference object in the reference objects on an overlapping resource; or transmitting the target transmission information on the overlapping resource.
16. The communications device according to claim 9 , wherein the reference objects having the same modulo result with respect to the spatial grouping factor are quasi co-located comprises:
the reference objects having the same modulo result with respect to the spatial grouping factor are quasi co-located with respect to QCL-TypeA, and QCL-TypeD.
17. A communications device, performed by a transmit end being a network device, comprising: a processor, a memory, and a computer program stored in the memory and running on the processor, wherein the processor executes the computer program to:
transmit, to a terminal, spatial information of at least two reference objects, wherein the reference objects having the same modulo result with respect to the spatial grouping factor are quasi co-located.
18. The communications device according to claim 17 , wherein
the spatial information further comprises spatial index information, and the reference objects are indicated by reference index information and/or time domain position information.
19. The communications device according to claim 18 , wherein the reference objects comprise an SSB, the SSB is indicated by an SSB index, SSB indexes corresponding to a same spatial index are quasi co-located, wherein the spatial index=SSB index mod M, M is a value range of the spatial grouping factor, and a range of M is {1, 2, 4, 8}.
20. The communications device according to claim 17 , wherein the processor executes the computer program to:
transmit a first correspondence between the reference objects and random access resources to terminal; or
transmit a second correspondence between the reference objects and monitoring occasions to the terminal;
wherein the first correspondence comprises at least one of the following:
information about a quantity of random access resources corresponding to the reference objects;
information about preambles corresponding to the reference objects in the random access resources, wherein the information about preambles is used to indicate at least one of a preamble for contention-based random access, a preamble for contention-free random access, a preamble for a system information (SI) request, a preamble for beam failure recovery (BFR), or a preamble for a specified group;
power parameters of the random access resources; or
a measurement threshold for the reference objects;
wherein the second correspondence comprises: information about a quantity of monitoring occasions corresponding to the reference objects.