TCI state indication for unified TCI states
A wireless device may receive a first downlink control information (DCI). The first DCI may comprise a frequency domain resource allocation (FDRA) field and a transmission configuration indicator (TCI) state indication field. The wireless device may determine that a TCI state indicated by the TCI state indication field is used for receptions of a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH) based on: the FDRA field being set to a predefined value and the first DCI being received with a configured scheduling radio network temporary identifier (CS-RNTI). Using the TCI state, the wireless device may receive a second DCI via the PDCCH and a transport block (TB) via the PDSCH.
1 . A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
receive one or more radio resource control (RRC) messages comprising a parameter indicating a mode of transmission configuration indicator (TCI) state indication is based on unified TCI states;
receive a first downlink control information (DCI) comprising:
a frequency domain resource allocation (FDRA) field; and
a TCI state indication field;
determine:
that a TCI state indicated by the TCI state indication field is used for receptions of a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH) based on the parameter; and
that the first DCI does not schedule the PDSCH based on:
the FDRA field being set to a predefined value; and
the first DCI being received with a configured scheduling radio network temporary identifier (CS-RNTI); and
using the TCI state, receive:
a second DCI via the PDCCH; and
a transport block (TB) via the PDSCH.
2 . The wireless device of claim 1 , wherein the TCI state, being used for receptions of the PDCCH and the PDSCH, is a unified TCI state.
3 . The wireless device of claim 2 , wherein the TCI state is determined to be the unified TCI state for the receptions of the PDCCH and the PDSCH based on one or more second fields of the first DCI being set to one or more second predefined values.
4 . The wireless device of claim 3 , wherein the one or more second fields comprise at least one of:
a modulation and coding scheme (MCS) field;
a new data indicator (NDI) field; or
a redundancy version (RV) field.
5 . The wireless device of claim 4 , wherein the instructions further cause the wireless device to receive a third DCI indicating activation or deactivation of semi-persistent scheduling (SPS) based on:
at least one of the one or more second fields of the third DCI not being set to the one or more second predefined values; and
the third DCI being received with the CS-RNTI.
6 . The wireless device of claim 1 , wherein:
the one or more RRC messages further comprise configuration parameters of TCI states; and
the configuration parameters comprise at least one of:
a first list of first TCI states for downlink receptions; or
a second list of second TCI states for uplink transmissions.
7 . The wireless device of claim 6 , wherein the determining that the TCI state is used for the receptions of the PDCCH and the PDSCH is further based on determining that the TCI state is from the first list of the first TCI states.
8 . A base station comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the base station to:
transmit, to a wireless device, one or more radio resource control (RRC) messages comprising a parameter indicating a mode of transmission configuration indicator (TCI) state indication is based on unified TCI states;
transmit, to the wireless device, a first downlink control information (DCI) comprising:
a frequency domain resource allocation (FDRA) field; and
a TCI state indication field;
determine:
that a TCI state indicated by the TCI state indication field is used for transmissions of a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH) based on the parameter; and
that the first DCI does not schedule the PDSCH based on:
the FDRA field being set to a predefined value; and
the first DCI being transmitted with a configured scheduling radio network temporary identifier (CS-RNTI); and
using the TCI state, transmit to the wireless device:
a second DCI via the PDCCH; and
a transport block (TB) via the PDSCH.
9 . The base station of claim 8 , wherein the TCI state, being used for transmissions of the PDCCH and the PDSCH, is a unified TCI state.
10 . The base station of claim 9 , wherein the TCI state is determined to be the unified TCI state for the transmissions of the PDCCH and the PDSCH based on one or more second fields of the first DCI being set to one or more second predefined values.
11 . The base station of claim 10 , wherein the one or more second fields comprise at least one of:
a modulation and coding scheme (MCS) field;
a new data indicator (NDI) field; or
a redundancy version (RV) field.
12 . The base station of claim 11 , wherein the instructions further cause the base station to transmit, to the wireless device, a third DCI indicating activation or deactivation of semi-persistent scheduling (SPS) based on:
at least one of the one or more second fields of the third DCI not being set to the one or more second predefined values; and
the third DCI being transmitted with the CS-RNTI.
13 . The base station of claim 8 , wherein:
the one or more RRC messages further comprise configuration parameters of TCI states; and
the configuration parameters comprise at least one of:
a first list of first TCI states for downlink transmissions; or
a second list of second TCI states for uplink receptions.
14 . The base station of claim 13 , wherein the determining that the TCI state is used for the transmissions of the PDCCH and the PDSCH is further based on determining that the TCI state is from the first list of the first TCI states.
15 . A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a wireless device, cause the wireless device to:
receive one or more radio resource control (RRC) messages comprising a parameter indicating a mode of transmission configuration indicator (TCI) state indication is based on unified TCI states;
receive a first downlink control information (DCI) comprising:
a frequency domain resource allocation (FDRA) field; and
a TCI state indication field;
determine:
that a TCI state indicated by the TCI state indication field is used for receptions of a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH) based on the parameter; and
that the first DCI does not schedule the PDSCH based on:
the FDRA field being set to a predefined value; and
the first DCI being received with a configured scheduling radio network temporary identifier (CS-RNTI); and
using the TCI state, receive:
a second DCI via the PDCCH; and
a transport block (TB) via the PDSCH.
16 . The non-transitory computer-readable medium of claim 15 , wherein the TCI state, being used for receptions of the PDCCH and the PDSCH, is a unified TCI state.
17 . The non-transitory computer-readable medium of claim 16 , wherein the TCI state is determined to be the unified TCI state for the receptions of the PDCCH and the PDSCH based on one or more second fields of the first DCI being set to one or more second predefined values.
18 . The non-transitory computer-readable medium of claim 17 , wherein the one or more second fields comprise at least one of:
a modulation and coding scheme (MCS) field;
a new data indicator (NDI) field; or
a redundancy version (RV) field.
19 . The non-transitory computer-readable medium of claim 18 , wherein the instructions further cause the wireless device to receive a third DCI indicating activation or deactivation of semi-persistent scheduling (SPS) based on:
at least one of the one or more second fields of the third DCI not being set to the one or more second predefined values; and
the third DCI being received with the CS-RNTI.
20 . The non-transitory computer-readable medium of claim 15 , wherein:
the one or more RRC messages further comprise configuration parameters of TCI states;
the configuration parameters comprise at least one of:
a first list of first TCI states for downlink receptions; or
a second list of second TCI states for uplink transmissions; and
the determining that the TCI state is used for the receptions of the PDCCH and the PDSCH is further based on determining that the TCI state is from the first list of the first TCI states.