Beam-based communication method and related apparatus
Embodiments of this application disclose a beam-based communication method. The method includes: receiving configuration information of a physical downlink control channel (PDCCH) from a network device, wherein the PDCCH is corresponding to a control resource set 0 (CORESET0); receiving indication information from the network device, wherein the indication information indicates a first beam; where the configuration information of the PDCCH includes a first parameter, the first parameter indicates that the PDCCH uses the first beam; and receiving the PDCCH by using the first beam.
1 . A communication method, comprising:
receiving configuration information of a physical downlink control channel (PDCCH) from a network device, wherein the PDCCH is corresponding to a control resource set 0 (CORESET 0);
receiving downlink control information (DCI) from the network device, wherein the DCI indicates a first beam; wherein the configuration information of the PDCCH is carried in a radio resource control (RRC) message and includes a first parameter that indicates that the PDCCH uses the first beam indicated by the DCI; and
receiving the PDCCH by using the first beam.
2 . The method according to claim 1 , further comprising:
receiving configuration information of a sounding reference signal (SRS) resource set from the network device, wherein the configuration information comprises a second parameter, the second parameter indicates that an SRS resource in the SRS resource set is transmitted by using the first beam.
3 . The method according to claim 1 , wherein a format of the DCI is 1_1 or 1_2.
4 . The method according to claim 1 , wherein the first beam is a common beam and is used to transmit a plurality of channels and/or a plurality of reference signals.
5 . The method according to claim 4 , wherein:
the plurality of channels comprises one or more of the following: a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), a physical broadcast channel (PBCH), or a physical random access channel (PRACH); and
the plurality of reference signals comprises one or more of the following: a synchronization signal/physical broadcast channel block (SSB), a channel state information reference signal (CSI-RS), a sounding reference signal (SRS), a demodulation reference signal (DMRS), a phase tracking reference signal (PTRS), a cell-specific reference signal (CRS), or a tracking reference signal (TRS).
6 . A communication method, comprising:
sending configuration information of a physical downlink control channel (PDCCH) to a terminal device, wherein the PDCCH is corresponding to a control resource set 0 (CORESET 0);
sending downlink control information (DCI) to the terminal device, wherein the DCI indicates a first beam; wherein the configuration information of the PDCCH is carried in a radio resource control (RRC) message and includes a first parameter that indicates that the PDCCH uses the first beam indicated by the DCI; and
sending the PDCCH by using the first beam.
7 . The method according to claim 6 , wherein the method further comprises:
sending configuration information of a sounding reference signal (SRS) resource set to the terminal device, wherein the configuration information comprises a second parameter, the second parameter indicates that an SRS resource in the SRS resource set is transmitted by using the first beam.
8 . The method according to claim 6 , wherein a format of the DCI is 1_1 or 1_2.
9 . The method according to claim 6 , wherein the first beam is a common beam and is used to transmit a plurality of channels and/or a plurality of reference signals.
10 . The method according to claim 9 , wherein:
the plurality of channels comprises one or more of the following: a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), a physical broadcast channel (PBCH), or a physical random access channel (PRACH); and
the plurality of reference signals comprises one or more of the following: a synchronization signal/physical broadcast channel block (SSB), a channel state information reference signal (CSI-RS), a sounding reference signal (SRS), a demodulation reference signal (DMRS), a phase tracking reference signal (PTRS), a cell-specific reference signal (CRS), or a tracking reference signal (TRS).
11 . A communication apparatus, comprising:
at least one processor, configured to execute programming instructions to cause the apparatus to:
receive configuration information of a physical downlink control channel (PDCCH) from a network device, wherein the PDCCH is corresponding to a control resource set 0 (CORESET 0);
receive downlink control information (DCI) from the network device, wherein the DCI indicates a first beam; wherein the configuration information of the PDCCH is carried in a radio resource control (RRC) message and includes a first parameter that indicates that the PDCCH uses the first beam indicated by the DCI; and
receive the PDCCH by using the first beam.
12 . The communication apparatus according to claim 11 , wherein the at least one processor is further configured to execute the programming instructions to cause the apparatus to:
receive configuration information of a sounding reference signal (SRS) resource set from the network device, wherein the configuration information comprises a second parameter, the second parameter indicates that an SRS resource in the SRS resource set is transmitted by using the first beam.
13 . The communication apparatus according to claim 11 , wherein a format of the DCI is 1_1 or 1_2.
14 . The communication apparatus according to claim 11 , wherein the first beam is a common beam and is used to transmit a plurality of channels and/or a plurality of reference signals.
15 . The communication apparatus according to claim 14 , wherein:
the plurality of channels comprises one or more of the following: a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), a physical broadcast channel (PBCH), or a physical random access channel (PRACH); and
the plurality of reference signals comprises one or more of the following: a synchronization signal/physical broadcast channel block (SSB), a channel state information reference signal (CSI-RS), a sounding reference signal (SRS), a demodulation reference signal (DMRS), a phase tracking reference signal (PTRS), a cell-specific reference signal (CRS), or a tracking reference signal (TRS).
16 . A communication apparatus, comprising:
at least one processor, configured to execute programming instructions to cause the apparatus to:
send configuration information of a physical downlink control channel (PDCCH) to a terminal device, wherein the PDCCH is corresponding to a control resource set 0 (CORESET 0);
send downlink control information (DCI) to the terminal device, wherein the DCI indicates a first beam; wherein the configuration information of the PDCCH is carried in a radio resource control (RRC) message and includes a first parameter that indicates that the PDCCH uses the first beam indicated by the DCI; and
send the PDCCH by using the first beam.
17 . The communication apparatus according to claim 16 , wherein the at least one processor is further configured to execute the programming instructions to cause the apparatus to:
send configuration information of a sounding reference signal (SRS) resource set to the terminal device, wherein the configuration information comprises a second parameter, the second parameter indicates that an SRS resource in the SRS resource set is transmitted by using the first beam.
18 . The communication apparatus according to claim 16 , wherein a format of the DCI is 1_1 or 1_2.
19 . The communication apparatus according to claim 16 , wherein the first beam is a common beam and is used to transmit a plurality of channels and/or a plurality of reference signals.
20 . The communication apparatus according to claim 19 , wherein:
the plurality of channels comprises one or more of the following: a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), a physical broadcast channel (PBCH), or a physical random access channel (PRACH); and
the plurality of reference signals comprises one or more of the following: a synchronization signal/physical broadcast channel block (SSB), a channel state information reference signal (CSI-RS), a sounding reference signal (SRS), a demodulation reference signal (DMRS), a phase tracking reference signal (PTRS), a cell-specific reference signal (CRS), or a tracking reference signal (TRS).