Method and device for TCI state configuration

1 . A method for transmission configuration indicator (TCI) state configuration, comprising:

receiving, by a terminal device, configuration of one TCI state from a network device;

wherein the one TCI state comprises one or more of:

quasi co-location (QCL) information for downlink reception;

information for determining a spatial filter for uplink transmission; or

information for determining a path loss reference signal for uplink transmission; wherein the one TCI state comprises a reference signal configured for QCL-TypeD quasi co-location type and for determining a spatial filter for uplink transmission; or, a reference signal for determining a path loss reference signal for uplink transmission;

or

receiving, by a terminal device, configuration of a plurality of TCI states from a network device;

wherein each of the plurality of TCI states comprises one or more of:

quasi co-location (QCL) information for downlink reception;

information for determining a spatial filter for uplink transmission; or

information for determining a path loss reference signal for uplink transmission; wherein each of the plurality of TCI states comprises a reference signal configured for QCL-TypeD quasi co-location type and for determining a spatial filter for uplink transmission; or, a reference signal for determining a path loss reference signal for uplink transmission; the method further comprises:

receiving, by the terminal device from the network device, indication of a TCI state for common TCI state operation in downlink, through downlink control information (DCI) or a media access control (MAC) control element (CE); and applying, by the terminal device, the QCL information in the TCI state to reception on a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH) and a channel state information reference signal (CSI-RS) resource,

or

receiving, by the terminal device from the network device, indication of a TCI state for common TCI state operation in uplink, through downlink control information (DCI) or a media access control (MAC) control element (CE); and applying, by the terminal device, the information for determining a spatial filter and/or a path loss reference signal in the TCI state to transmission on a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH) and a sounding reference signal (SRS) resource,

or,

receiving, by the terminal device from the network device, indication of a TCI state for common TCI state operation for control channels, through downlink control information (DCI) or a media access control (MAC) control element (CE); and applying, by the terminal device, the QCL information in the TCI state to reception on a physical downlink control channel (PDCCH), and applying, by the terminal device, the information for determining a spatial filter and/or a path loss reference signal in the TCI state to transmission on a physical uplink control channel (PUCCH),

or,

receiving, by the terminal device from the network device, indication of a TCI state for common TCI state operation for data channels and reference signals, through downlink control information (DCI) or a media access control (MAC) control element (CE); and applying, by the terminal device, the QCL information in the TCI state to reception on a physical downlink shared channel (PDSCH) and a channel state information reference signal (CSI-RS) resource, and applying, by the terminal device, the information for determining a spatial filter and/or a path loss reference signal in the TCI state to transmission on a physical uplink shared channel (PUSCH) and a sounding reference signal (SRS) resource.

2 . The method of claim 1 , wherein the reference signal configured for QCL-TypeD quasi co-location type is a synchronization signal/physical broadcast channel (SS/PBCH) block, a channel state information reference signal (CSI-RS) resource, or a sounding reference signal (SRS) resource;

the reference signal for determining a spatial filter for uplink transmission is an SS/PBCH block, a CSI-RS resource or an SRS resource.

3 . The method of claim 1 , further comprising:

receiving, by the terminal device from the network device, downlink control information (DCI) indicating a first TCI state; and

in response to the first TCI state does not include configuration of a spatial filter for uplink transmission, deriving, by the terminal device, a spatial filter for uplink transmission by using a reference signal configured for QCL-TypeD quasi co-location type in the first TCI state.

4 . The method of claim 1 , wherein the downlink reception comprises reception on at least one of: a physical downlink shared channel (PDSCH), a physical downlink control channel (PDCCH) or a channel state information reference signal (CSI-RS) resource, and the uplink transmission comprises transmission on at least one of: a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH) or a sounding reference signal (SRS) resource.

5 . The method of claim 1 , further comprising:

receiving, by the terminal device from the network device, indication of a TCI state for common TCI state operation, through downlink control information (DCI) or a media access control (MAC) control element (CE); and

applying, by the terminal device, the QCL information in the TCI state to reception on a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH), and applying, by the terminal device, the information for determining a spatial filter and/or a path loss reference signal in the TCI state to transmission on a physical uplink shared channel (PUSCH) and a physical uplink control channel (PUCCH).

6 . The method of claim 5 , wherein a channel state information reference signal (CSI-RS) resource set is configured with a parameter for indicating whether the terminal device is requested to perform reception on CSI-RS resources in the CSI-RS resource set by following the QCL information in the TCI state for common TCI state operation; or

a channel state information reference signal (CSI-RS) resource is configured with a parameter for indicating whether the terminal device is requested to perform reception on the CSI-RS resource by following the QCL information in the TCI state for common TCI state operation.

7 . The method of claim 5 , wherein a sounding reference signal (SRS) resource set is configured with a parameter for indicating whether the terminal device is requested to perform transmission on SRS resources in the SRS resource set by following the information for determining a spatial filter and/or a path loss reference signal in the TCI state for common TCI state operation; or

a sounding reference signal (SRS) resource is configured with a parameter for indicating whether the terminal device is requested to perform transmission on the SRS resource by following the information for determining a spatial filter and/or a path loss reference signal in the TCI state for common TCI state operation.

8 . The method of claim 5 , further comprising:

applying, by the terminal device, the QCL information in the TCI state for common TCI state operation to reception on channel state information reference signal (CSI-RS) resources in a CSI-RS resource set, and

applying, by the terminal device, the information for determining a spatial filter and/or a path loss reference signal in the TCI state for common TCI state operation to transmission on sounding reference signal (SRS) resources in an SRS resource set.

9 . A terminal device, comprising: a processor and a transceiver, wherein

the transceiver is configured to receive configuration of one transmission configuration indicator (TCI) state from a network device;

wherein the one TCI state comprises one or more of:

quasi co-location (QCL) information for downlink reception;

information for determining a spatial filter for uplink transmission; or

information for determining a path loss reference signal for uplink transmission; wherein the one TCI state comprises a reference signal configured for QCL-TypeD quasi co-location type and for determining a spatial filter for uplink transmission; or, a reference signal for determining a path loss reference signal for uplink transmission;

or

the transceiver is configured to receive configuration of more transmission configuration indicator (TCI) states from a network device;

wherein each of the more TCI states comprises one or more of:

quasi co-location (QCL) information for downlink reception;

information for determining a spatial filter for uplink transmission; or

information for determining a path loss reference signal for uplink transmission; wherein each of the more TCI states comprises a reference signal configured for QCL-TypeD quasi co-location type and for determining a spatial filter for uplink transmission; or, a reference signal for determining a path loss reference signal for uplink transmission; wherein

the transceiver is further configured to receive, from the network device, indication of a TCI state for common TCI state operation in downlink, through downlink control information (DCI) or a media access control (MAC) control element (CE); and the processor is configured to apply the QCL information in the TCI state to reception on a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH) and a channel state information reference signal (CSI-RS) resource,

or

the transceiver is further configured to receive, from the network device, indication of a TCI state for common TCI state operation in uplink, through downlink control information (DCI) or a media access control (MAC) control element (CE); and the processor is configured to apply the information for determining a spatial filter and/or a path loss reference signal in the TCI state to transmission on a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH) and a sounding reference signal (SRS) resource,

or

the transceiver is further configured to receive, from the network device, indication of a TCI state for common TCI state operation for control channels, through downlink control information (DCI) or a media access control (MAC) control element (CE); and the processor is configured to apply the QCL information in the TCI state to reception on a physical downlink control channel (PDCCH), and apply the information for determining a spatial filter and/or a path loss reference signal in the TCI state to transmission on a physical uplink control channel (PUCCH),

or

the transceiver is further configured to receive, from the network device, indication of a TCI state for common TCI state operation for data channels and reference signals, through downlink control information (DCI) or a media access control (MAC) control element (CE); and the processor is configured to apply the QCL information in the TCI state to reception on a physical downlink shared channel (PDSCH) and a channel state information reference signal (CSI-RS) resource, and apply the information for determining a spatial filter and/or a path loss reference signal in the TCI state to transmission on a physical uplink shared channel (PUSCH) and a sounding reference signal (SRS) resource.

10 . The terminal device of claim 9 , wherein the reference signal configured for QCL-TypeD quasi co-location type is a synchronization signal/physical broadcast channel (SS/PBCH) block, a channel state information reference signal (CSI-RS) resource, or a sounding reference signal (SRS) resource;

the reference signal for determining a spatial filter for uplink transmission is an SS/PBCH block, a CSI-RS resource or an SRS resource.

11 . The terminal device of claim 9 , wherein

the transceiver is further configured to receive, from the network device, downlink control information (DCI) indicating a first TCI state; and

the processor is configured to, in response to the first TCI state does not include configuration of a spatial filter for uplink transmission, derive a spatial filter for uplink transmission by using a reference signal configured for QCL-TypeD quasi co-location type in the first TCI state.

12 . The terminal device of claim 9 , wherein the downlink reception comprises reception on at least one of: a physical downlink shared channel (PDSCH), a physical downlink control channel (PDCCH) or a channel state information reference signal (CSI-RS) resource, and the uplink transmission comprises transmission on at least one of: a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH) or a sounding reference signal (SRS) resource.

13 . The terminal device of claim 9 , wherein

the transceiver is further configured to receive, from the network device, indication of a TCI state for common TCI state operation, through downlink control information (DCI) or a media access control (MAC) control element (CE); and

the processor is configured to apply the QCL information in the TCI state to reception on a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH), and apply the information for determining a spatial filter and/or a path loss reference signal in the TCI state to transmission on a physical uplink shared channel (PUSCH) and a physical uplink control channel (PUCCH).

14 . The terminal device of claim 13 , wherein the transceiver is further configured to perform reception on channel state information reference signal (CSI-RS) resources in a CSI-RS resource set by following the QCL information in the TCI state for common TCI state operation, when the CSI-RS resource set is configured with a parameter indicating that the terminal device is requested to perform reception on CSI-RS resources in the CSI-RS resource set by following the QCL information in the TCI state for common TCI state operation; or

the transceiver is further configured to perform reception on a channel state information reference signal (CSI-RS) resource by following the QCL information in the TCI state for common TCI state operation, when the CSI-RS resource is configured with a parameter indicating that the terminal device is requested to perform reception on the CSI-RS resource by following the QCL information in the TCI state for common TCI state operation,

and,

the transceiver is further configured to:

perform transmission on sounding reference signal (SRS) resources in a SRS resource set by following the information for determining a spatial filter and/or a path loss reference signal in the TCI state for common TCI state operation, when the SRS resource set is configured with a parameter indicating that the terminal device is requested to perform transmission on SRS resources in the SRS resource set by following the information for determining a spatial filter and/or a path loss reference signal in the TCI state for common TCI state operation; or

perform transmission on a sounding reference signal (SRS) resource by following the information for determining a spatial filter and/or a path loss reference signal in the TCI state for common TCI state operation, when the SRS resource is configured with a parameter indicating that the terminal device is requested to perform transmission on the SRS resource by following the information for determining a spatial filter and/or a path loss reference signal in the TCI state for common TCI state operation.

15 . The terminal device of claim 13 , wherein the processor is further configured to apply the QCL information in the TCI state for common TCI state operation to reception on channel state information reference signal (CSI-RS) resources in a CSI-RS resource set, and apply the information for determining a spatial filter and/or a path loss reference signal in the TCI state for common TCI state operation to transmission on sounding reference signal (SRS) resources in an SRS resource set.

16 . A network device, comprising: a processor and a transceiver, wherein

the transceiver is configured to send configuration of one transmission configuration indicator (TCI) state to a terminal device;

wherein the one TCI state comprises one or more of:

quasi co-location (QCL) information for downlink reception;

information for determining a spatial filter for uplink transmission; or

information for determining a path loss reference signal for uplink transmission; wherein the one TCI state comprises a reference signal configured for QCL-TypeD quasi co-location type and for determining a spatial filter for uplink transmission; or, a reference signal for determining a path loss reference signal for uplink transmission;

or

the transceiver is configured to send configuration of more transmission configuration indicator (TCI) states to a terminal device;

wherein each of the more TCI states comprises one or more of:

quasi co-location (QCL) information for downlink reception;

information for determining a spatial filter for uplink transmission; or

information for determining a path loss reference signal for uplink transmission; wherein each of the more TCI states comprises a reference signal configured for QCL-TypeD quasi co-location type and for determining a spatial filter for uplink transmission; or, a reference signal for determining a path loss reference signal for uplink transmission; wherein the transceiver is further configured to send indication of a TCI state for common TCI state operation in downlink to the terminal device, through downlink control information (DCI) or a media access control (MAC) control element (CE), wherein the QCL information in the TCI state is to be applied to reception on a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH) and a channel state information reference signal (CSI-RS) resource; or

wherein the transceiver is further configured to send indication of a TCI state for common TCI state operation in uplink to the terminal device, through downlink control information (DCI) or a media access control (MAC) control element (CE), wherein the information for determining a spatial filter and/or a path loss reference signal in the TCI state is to be applied to transmission on a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH) and a sounding reference signal (SRS) resource; or

wherein the transceiver is further configured to send indication of a TCI state for common TCI state operation for control channels to the terminal device, through downlink control information (DCI) or a media access control (MAC) control element (CE), wherein the QCL information in the TCI state is to be applied to reception on a physical downlink control channel (PDCCH), and the information for determining a spatial filter and/or a path loss reference signal in the TCI state is to be applied to transmission on a physical uplink control channel (PUCCH); or

wherein the transceiver is further configured to send indication of a TCI state for common TCI state operation for data channels and reference signals to the terminal device, through downlink control information (DCI) or a media access control (MAC) control element (CE), wherein the QCL information in the TCI state is to be applied to reception on a physical downlink shared channel (PDSCH) and a channel state information reference signal (CSI-RS) resource, and the information for determining a spatial filter and/or a path loss reference signal in the TCI state is to be applied to transmission on a physical uplink shared channel (PUSCH) and a sounding reference signal (SRS) resource.

17 . The network device of claim 16 , wherein the reference signal configured for QCL-TypeD quasi co-location type is a synchronization signal/physical broadcast channel (SS/PBCH) block, a channel state information reference signal (CSI-RS) resource, or a sounding reference signal (SRS) resource;

the reference signal for determining a spatial filter for uplink transmission is an SS/PBCH block, a CSI-RS resource or an SRS resource.

18 . The network device of claim 16 , wherein

the transceiver is further configured to send downlink control information (DCI) indicating a first TCI state to the terminal device;

wherein in response to the first TCI state does not include configuration of a spatial filter for uplink transmission, a reference signal configured for QCL-TypeD quasi co-location type in the first TCI state is used for the terminal device to derive a spatial filter for uplink transmission.

19 . The network device of claim 16 , wherein the downlink reception comprises reception on at least one of: a physical downlink shared channel (PDSCH), a physical downlink control channel (PDCCH) or a channel state information reference signal (CSI-RS) resource, and the uplink transmission comprises transmission on at least one of: a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH) or a sounding reference signal (SRS) resource.