Wireless communication method and apparatus and system for beam failure recovery
A wireless communication apparatus, configured in a terminal equipment, the terminal equipment being related to at least two transmission and reception points (TRPs), includes a monitor configured to monitor second downlink control information according to an antenna port quasi-collocation (QCL) parameter the same as an antenna port QCL parameter associated with a first reference signal after the terminal equipment receives first downlink control information associated with beam failure or link failure, wherein, the first reference signal is associated with a first TRP in the at least two TRPs, a TRP associated with the second downlink control information is identical to the first TRP associated with the first reference signal, and the first reference signal is identified from at least one reference signal for beam recovery.
1 . A wireless communication apparatus, configured in a terminal equipment, the terminal equipment being related to at least two transmission and reception points (TRPs), the apparatus comprising:
a monitor configured to monitor second downlink control information according to an antenna port quasi-collocation (QCL) parameter the same as an antenna port QCL parameter associated with a first reference signal after the terminal equipment receives first downlink control information associated with beam failure or link failure, wherein,
the first reference signal is associated with a first TRP in the at least two TRPs,
a TRP associated with the second downlink control information is identical to the first TRP associated with the first reference signal, and
the first reference signal is identified from at least one reference signal for beam recovery; and
a transmitter configured to transmit second information to a network device before receiving the first downlink control information, the second information being associated with an index of the first reference signal and/or an index of a TRP associated with the first reference signal.
2 . The apparatus according to claim 1 , wherein that the first reference signal is associated with the first TRP is indicated via radio resource control (RRC) signaling.
3 . The apparatus according to claim 2 , wherein the RRC signaling indicates an identifier (ID) of a TRP corresponding to the first reference signal.
4 . The apparatus according to claim 2 , wherein the RRC signaling is RRC signaling for indicating the first TRP.
5 . The apparatus according to claim 1 , wherein that the first reference signal is identified from at least one reference signal for beam recovery refers to that:
the first reference signal is identified from a candidate beam reference signal associated with the first TRP in a candidate beam reference signal list.
6 . The apparatus according to claim 1 , wherein that the first reference signal is identified from at least one reference signal for beam recovery refers to that:
the first reference signal is identified from a candidate beam reference signal list for the first TRP.
7 . The apparatus according to claim 1 , wherein that the terminal equipment is related to at least two TRPs refers to that:
on an active downlink BWP of a serving cell, the terminal equipment is configured with a first control resource set and a second control resource set, wherein,
the first control resource set is not configured with a CORESETPoolIndex or is configured with a CORESETPoolIndex with a value 0; and
the second control resource set is configured with a CORESETPoolIndex with a value 1.
8 . The apparatus according to claim 1 , wherein the apparatus further comprises:
a receiver configured to receive the first downlink control information according to the antenna port QCL parameter associated with the first reference signal.
9 . The apparatus according to claim 1 , wherein the TRP is equivalent to at least one of the following:
a control resource set (CORESET) pool; or
a transmission configuration indication (TCI) state.
10 . The apparatus according to claim 1 , wherein the apparatus further comprises:
a transmitter configured to transmit uplink control information, the uplink control information being associated with the first TRP in the at least two TRPs.
11 . A wireless communication apparatus, configured in a terminal equipment, the terminal equipment being related to at least two transmission and reception points (TRPs), the apparatus comprising:
a monitor configured to monitor second downlink control information according to an antenna port quasi-collocation (QCL) parameter the same as an antenna port QCL parameter associated with a first reference signal after the terminal equipment receives first downlink control information associated with beam failure or link failure, wherein,
the first reference signal is associated with a first TRP in the at least two TRPs,
a TRP associated with the second downlink control information is identical to the first TRP associated with the first reference signal, and
the first reference signal is identified from at least one reference signal for beam recovery; and
a first transmitter configured to transmit first uplink control information according to a spatial filter and/or power associated with a first reference signal after the terminal equipment receives first downlink control information associated with beam failure or link failure, wherein,
the first reference signal is associated with a first TRP in the at least two TRPs,
a TRP associated with the first uplink control information is identical to the first TRP associated with the first reference signal, and
the first reference signal is identified from at least one reference signal for beam recovery.
12 . The apparatus according to claim 11 , wherein that the first reference signal is associated with the first TRP is indicated via RRC signaling.
13 . The apparatus according to claim 12 , wherein the RRC signaling is RRC signaling for indicating the first TRP.
14 . The apparatus according to claim 11 , wherein that the first reference signal is identified from at least one reference signal for beam recovery refers to that:
the first reference signal is identified from a candidate beam reference signal associated with the first TRP in a candidate beam reference signal list.
15 . The apparatus according to claim 11 , wherein that the first reference signal is identified from at least one reference signal for beam recovery refers to that:
the first reference signal is identified from a candidate beam reference signal list for the first TRP.
16 . The apparatus according to claim 11 , wherein that a TRP associated with the first uplink control information is identical to the first TRP associated with the first reference signal refers to at least one of the following:
a TRP associated with a control resource set used for receiving DCI triggering the first uplink control information is identical to the first TRP;
a reference signal for determining space configuration and corresponding to the first uplink control information is identical to a reference signal for beam failure detection and/or for determining candidate beam recovery and associated with the first TRP; or
a TRP associated with a resource corresponding to the first uplink control information is identical to the first TRP.
17 . The apparatus according to claim 11 , wherein the apparatus further comprises:
a receiver configured to receive the first downlink control information according to an antenna port QCL parameter associated with the first reference signal.
18 . The apparatus according to claim 11 , wherein the apparatus further comprises:
a second transmitter configured to transmit second information to a network device before receiving the first downlink control information, the second information being associated with an index of the first reference signal and/or an index of a TRP associated with the first reference signal.
19 . The apparatus according to claim 11 , wherein the TRP is equivalent to at least one of the following:
a control resource set (CORESET) pool; or
a transmission configuration indication (TCI) state.