Beam indication method, device, terminal and network side device
The present disclosure discloses a beam indication method, a beam indication device, a terminal and a network side device. The method is applied to a first terminal and includes: receiving, by the first terminal, a first message, wherein the first message includes beam-related information for indicating N beams, N is an integer greater than or equal to 1; transmitting, by the first terminal, at least two target channels and/or target reference signals according to the beam-related information.
1. A beam indication method, applied to a first terminal, comprising:
receiving, by the first terminal, a first message, wherein the first message includes beam-related information for indicating N beams, N is an integer greater than or equal to 1;
transmitting, by the first terminal, at least two target channels and/or target reference signals according to the beam-related information;
wherein the N beams comprise:
beams for each of N channel signal combinations, each channel signal combination includes at least two channels and/or reference signals; or,
beams of M terminals, wherein M is an integer greater than or equal to 2 and less than or equal to N;
wherein the channel signal combination is predefined, or determined by the network side device and indicated to the terminal, or determined by the terminal and fed back to the network side device.
2. The method according to claim 1 , wherein the N beams are indicated by one or more of a Transmission Configuration Indicator (TCI) state, a quasi co-location (QCL) parameter, spatial relationship information (SpatialRelationInfo), an index of an uplink reference signal, an index of a downlink reference signal, an index of a synchronization signal, an uplink channel and a downlink channel.
3. The method according to claim 2 , wherein,
the beam indicated by the index of the uplink reference signal, the index of the downlink reference signal, the index of the synchronization signal, the uplink channel or the downlink channel is: a beam most currently used by the uplink reference signal, the downlink reference signal, the synchronization signal, the uplink channel or the downlink channel.
4. The method according to claim 1 , wherein N is equal to 1;
the transmitting, by the first terminal, at least two target channels and/or target reference signals according to the beam-related information, includes:
determining only one beam indicated by the beam-related information as a first beam;
determining the at least two target channels and/or target reference signals according to preconfigured information or according to combination indication information sent by a network side device and for indicating the channel signal combination;
transmitting the at least two target channels and/or target reference signals based on the first beam.
5. The method according to claim 1 , wherein N is greater than 1;
the transmitting, by the first terminal, at least two target channels and/or target reference signals according to the beam-related information, includes:
when the N beams are the beams for each of the N channel signal combinations, determining a first beam of each channel signal combination according to a first corresponding relationship between the N beams and the channel signal combination, transmitting channels and/or signals in a corresponding channel signal combination based on the first beam of each channel signal combination;
when the N beams are the beams of M terminals, determining a first beam of the first terminal according to a second corresponding relationship between the N beams and the terminal; determining the at least two target channels and/or target reference signals according to the preconfigured information or the combination indication information sent by the network side device and for indicating the channel signal combination; transmitting the at least two target channels and/or target reference signals based on the first beam.
6. The method according to claim 1 , wherein the channel signal combination includes at least one of the following combinations:
an uplink channel and/or an uplink reference signal;
a downlink channel and/or a downlink reference signal;
the uplink channel and the downlink channel;
the uplink channel and the downlink reference signal;
the uplink reference signal and the downlink channel;
the uplink reference signal and the downlink reference signal.
7. The method according to claim 1 , wherein the first message further includes combination indication information for indicating the channel signal combination.
8. The method according to claim 1 , wherein,
a valid time of the beam-related information in the first message is determined by at least one of the following:
determining the valid time according to valid time indication information included in the first message, wherein the valid time indication information indicates a time range of the valid time, or the valid time indicates whether the beam-related information is valid;
determining the valid time according to a predefined time range;
determining the valid time according to configuration on the network side device;
wherein the step of transmitting at least two target channels and/or target reference signals according to the beam-related information is performed only when the beam-related information is valid or when a current time belongs to the valid time.
9. The method according to claim 8 , wherein,
the predefined time range includes at least one of the following:
the predefined time range is a time for transmitting the at least two target channels and/or target reference signals once, and the beam-related information is only valid within the time for transmitting the at least two target channels and/or target reference signals once;
the predefined time range is a duration of the valid time predefined by a system.
10. The method according to claim 8 , further comprising:
obtaining a method of determining the valid time according to the configuration on the network side,
wherein, the method of determining the valid time is indicated by the first message.
11. The method according to claim 1 , further comprising at least one of the following:
receiving, by the first terminal, a second message, wherein the second message includes combination indication information for indicating the channel signal combination;
receiving, by the first terminal, a third message, wherein the third message includes beam valid indication information for indicating whether the channel signal combination uses the beam in the beam-related information, or includes time indication information for indicating a valid time of a beam using the beam in the beam-related information;
the valid time of the beam in the beam-related information used by the channel signal combination is predefined or configured by the network side device;
wherein the step of transmitting at least two target channels and/or target reference signals according to the beam-related information is performed only when the beam valid indication information is valid or a current time belongs to the valid time.
12. The method according to claim 11 , wherein,
the first message, the second message and the third message are indicated by one of RRC signaling, MAC-CE signaling, UE group common DCI, DCI format 0-1, DCI format 0-2, DCI format 1-0, DCI format 1-1 and dedicated physical layer dynamic signaling;
wherein when the message is indicated by DCI format 0-1, DCI format 0-2, DCI format 1-0 or DCI format 1-1, a value of a preset field in the DCI format 0-1, DCI format 0-2, DCI format 1-0 or DCI format 1-1 is a preset value, and the preset value indicates that the DCI format is used to indicate the message.
13. The method according to claim 1 , wherein the at least two channels and/or reference signals are at least two of physical downlink control channel (PDCCH), physical downlink shared channel (PDSCH), physical uplink control channel (PUCCH), physical uplink shared channel (PUSCH), channel state information reference signal (CSI-RS) and sounding reference signal (SRS).
14. The method according to claim 1 , wherein,
the first message is indicated by one of radio resource control (RRC) signaling, medium access control layer control element (MAC-CE) signaling, user equipment group common downlink control information (UE group common DCI), DCI format 0-1, DCI format 0-2, DCI format 1-0, DCI format 1-1 and dedicated physical layer dynamic signaling;
wherein when the first message is indicated by DCI format 0-1, DCI format 0-2, DCI format 1-0 or DCI format 1-1, a value of a preset field in the DCI format 0-1, DCI format 0-2, DCI format 1-0 or DCI format 1-1 is a preset value, and the preset value indicates that the DCI format is used to indicate the first message.
15. The method according to claim 14 , wherein when the first message is indicated by one of UE group common DCI, DCI format 0-1, DCI format 0-2, DCI format 1-0, DCI format 1-1 and dedicated physical layer dynamic signaling, the method further includes:
feeding back, by the first terminal, reception confirmation information of the first message on a first uplink resource, or using the first uplink resource to indicate the reception confirmation information of the first message;
wherein the first uplink resource is determined according to a predefined corresponding relationship between the first message and the first uplink resource, or determined according to an uplink resource allocation indication field included in the first message.
16. A beam indication method, applied to a network side device, comprising:
generating a first message, wherein the first message includes beam-related information for indicating N beams, N is an integer greater than or equal to 1;
sending the first message to a first terminal;
wherein the N beams are:
beams for each of N channel signal combinations, each channel signal combination includes at least two channels and/or reference signals; or,
beams of M terminals, wherein M is an integer greater than or equal to 2 and less than or equal to N;
wherein the channel signal combination is predefined, or determined by the network side device and indicated to the terminal, or determined by the terminal and fed back to the network side device.
17. A network side device, comprising: a memory, a processor, a transceiver, and a program stored in the memory and executed by the processor; wherein,
the processor executes the program to implement the beam indication method according to claim 16 .
18. A first terminal, comprising: a memory, a processor, a transceiver, and a program stored on the memory and executed by the processor; wherein,
the processor executes the program to implement the following steps:
receiving a first message, wherein the first message includes beam-related information for indicating N beams, N is an integer greater than or equal to 1;
transmitting at least two target channels and/or target reference signals according to the beam-related information;
wherein the N beams are:
beams for each of N channel signal combinations, each channel signal combination includes at least two channels and/or reference signals; or
beams of M terminals, wherein M is an integer greater than or equal to 2 and less than or equal to N;
wherein the channel signal combination is predefined, or determined by the network side device and indicated to the terminal, or determined by the terminal and fed back to the network side device.