Methods and apparatus for multi-beam operation
A network controller transmits to a communication device a first control message comprising a first indicator indicating a plurality of target elements, wherein the plurality of target elements instruct the communication device to share a plurality of quasi co-location (QCL) information or a plurality of spatial filter information when receiving and/or transmitting on the plurality of target elements.
1 . A method, comprising:
receiving, by a communication device from a network controller, a first control message comprising first indication information indicating a plurality of target channel elements or a plurality of target reference signals;
receiving, by the communication device from the network controller, a second control message comprising second indication information indicating a plurality of source reference signals;
determining, by the communication device, quasi co-location (QCL) information or spatial filter information in accordance with the plurality of source reference signals; and
receiving or transmitting, by the communication device, the plurality of target reference signals or in the plurality of target channel elements using the QCL information or the spatial filter information.
2 . The method of claim 1 , wherein the first control message is a radio resource control (RRC) signaling.
3 . The method of claim 1 , wherein the receiving the second control message is after the receiving the first control message, and wherein the second control message is a downlink control information (DCI) message.
4 . The method of claim 1 , wherein the second indication information comprises a first plurality of TCI state indicators indicating a first plurality of transmission configuration indication (TCI) states, wherein the first plurality of TCI states indicates the plurality of source reference signals, and wherein the first plurality of TCI states are of a first set of TCI states, and wherein the first set of TCI states are for downlink (DL) communication.
5 . The method of claim 1 , wherein the plurality of target channel elements or the plurality of target reference signals use the QCL information or the spatial filter information from a reference signal.
6 . A method, the method comprising:
transmitting, by a network controller to a communication device, a first control message comprising first indication information indicating a plurality of target channel elements or a plurality of target reference signals; and
transmitting, by the network controller to the communication device, a second control message comprising second indication information indicating a plurality of source reference signals, wherein the plurality of source reference signals instructs the communication device to determine quasi co-location (QCL) information or spatial filter information in accordance with the plurality of source reference signals, and
wherein the QCL information or the spatial filter information is used for receiving or transmitting the plurality of target reference signals or in the plurality of target channel elements.
7 . The method of claim 6 , wherein the transmitting the second control message is after the transmitting the first control message, wherein the first control message is a radio resource control (RRC) signaling, and wherein the second control message is a downlink control information (DCI) message.
8 . The method of claim 6 , wherein the second indication information comprises a first plurality of TCI state indicators indicating a first plurality of transmission configuration indication (TCI) states, wherein the first plurality of TCI states indicates the plurality of source reference signals, and wherein the first plurality of TCI states are of a first set of TCI states, and wherein the first set of TCI states are for downlink (DL) communication.
9 . The method of claim 6 , wherein the plurality of target channel elements or the plurality of target reference signals use the QCL information or the spatial filter information from a reference signal.
10 . A user equipment (UE) comprising:
a non-transitory memory storage storing instructions; and
one or more processors in communication with the non-transitory memory storage, wherein the one or more processors execute the instructions to cause the UE to perform operations including:
receiving, from a network controller, a first control message comprising first indication information indicating a plurality of target channel elements or a plurality of target reference signals;
receiving, from the network controller, a second control message comprising second indication information indicating a plurality of source reference signals;
determining quasi co-location (QCL) information or spatial filter information in accordance with the plurality of source reference signals; and
receiving or transmitting the plurality of target reference signals or in the plurality of target channel elements using the QCL information or the spatial filter information.
11 . The UE of claim 10 , wherein the receiving the second control message is after the receiving the first control message, wherein the first control message is a radio resource control (RRC) signaling, and wherein the second control message is a downlink control information (DCI) message.
12 . The UE of claim 10 , wherein the second indication information comprises a first plurality of TCI state indicators indicating a first plurality of transmission configuration indication (TCI) states, wherein the first plurality of TCI states indicates the plurality of source reference signals, and wherein the first plurality of TCI states are of a first set of TCI states, and wherein the first set of TCI states are for downlink (DL) communication.
13 . The UE of claim 10 , wherein the plurality of target channel elements or the plurality of target reference signals use the QCL information or the spatial filter information from a reference signal.
14 . A network controller comprising:
a non-transitory memory storage storing instructions; and
one or more processors in communication with the non-transitory memory storage, wherein the one or more processors execute the instructions to cause the network controller to perform operations including:
transmitting, to a communication device, a first control message comprising a first indication information indicating a plurality of target channel elements or a plurality of target reference signals; and
transmitting, to the communication device, a second control message comprising second indication information indicating a plurality of source reference signals, wherein the plurality of source reference signals instructs the communication device to determine quasi co-location (QCL) information or spatial filter information in accordance with the plurality of source reference signals, and
wherein the QCL information or the spatial filter information is used for receiving or transmitting the plurality of target reference signals or in the plurality of target channel elements.
15 . The network controller of claim 14 , wherein the transmitting the second control message is after the transmitting the first control message, wherein the first control message is a radio resource control (RRC) signaling, and wherein the second control message is a downlink control information (DCI) message.
16 . The network controller of claim 14 , wherein the second indication information comprises a first plurality of TCI state indicators indicating a first plurality of transmission configuration indication (TCI) states, wherein the first plurality of TCI states indicates the plurality of source reference signals, and wherein the first plurality of TCI states are of a first set of TCI states, and wherein the first set of TCI states are for downlink (DL) communication.
17 . The network controller of claim 14 , wherein the plurality of target channel elements or the plurality of target reference signals use the QCL information or the spatial filter information from a reference signal.