Wireless communication method and apparatus and system
A wireless communication apparatus, configured in a terminal equipment, includes a receiver configured to receive control information, the control information triggering a physical downlink shared channel, reception or monitoring of the control information being related to two TCI states, and a DCI format corresponding to the control information including no TCI field, and a processor configured to transmit or receive the physical downlink shared channel according to the two TCI states or according to one of the two TCI states.
1 . A wireless communication apparatus, configured in a terminal equipment, the apparatus comprising:
a receiver configured to receive control information, the control information triggering a physical downlink shared channel, reception or monitoring of the control information being related to two TCI states, and a DCI format corresponding to the control information including no TCI field; and
processor circuitry configured to transmit or receive the physical downlink shared channel according to one of the two TCI states;
the one of the two TCI states refers to:
a first TCI state indicated by an MAC-CE command in TCI states of a control resource set (CORESET) used for receiving or monitoring the control information;
wherein a time offset between the control information and the physical downlink shared channel is greater than or equal to a predetermined time period.
2 . The apparatus according to claim 1 , wherein a time frequency resource used for receiving or monitoring the control information is one of the following:
an earliest symbol used for receiving or monitoring the control information;
a PRB of a lowest index used for receiving or monitoring the control information; and
a PRB of a lowest index in an earliest symbol used for receiving or monitoring the control information.
3 . The apparatus according to claim 1 , wherein the physical downlink shared channel being related to a first TCI state, and the first TCI state referring to at least one of the following:
a first TCI state indicated by an MAC-CE command in TCI states of a control resource set (CORESET) used for receiving or monitoring the control information;
a TCI state of a lowest ID in TCI states of a control resource set (CORESET) used for receiving or monitoring the control information;
a TCI state applied by a first control resource set indicated by RRC signaling in two control resource sets used for receiving or monitoring the control information;
a TCI state applied by a control resource set of a lowest ID in two control resource sets used for receiving or monitoring the control information;
a TCI state corresponding to a first search space set indicated by RRC signaling in two search space sets used for receiving or monitoring the control information;
a TCI state corresponding to a search space set of a lowest ID in two search space sets used for receiving or monitoring the control information; and
a TCI state applied by a time frequency resource used for receiving or monitoring the control information.
4 . The apparatus according to claim 3 , wherein the time frequency resource used for receiving or monitoring the control information is one of the following:
an earliest symbol used for receiving or monitoring the control information;
a PRB of a lowest index used for receiving or monitoring the control information; and
a PRB of a lowest index in an earliest symbol used for receiving or monitoring the control information.
5 . The apparatus according to claim 3 , wherein the PDSCH is further related to a second TCI state, the second TCI state referring to:
a TCI state in the two TCI states other than the first TCI state.
6 . The apparatus according to claim 1 , wherein according to RRC signaling or a DCI field of the DCI format, the processor circuitry determines to transmit or receive the physical downlink shared channel according to the two TCI states.
7 . The apparatus according to claim 1 , wherein according to RRC signaling or a DCI field of the DCI format, the processor circuitry determines to transmit or receive the physical downlink shared channel according to one of the two TCI states.
8 . The apparatus according to claim 6 , wherein the DCI field of the DCI format is a TDRA field of the DCI format.
9 . The apparatus according to claim 6 , wherein the RRC signaling is used to indicate whether the physical downlink shared channel is related to one TCI state or two TCI states.