Unified TCI framework
AssigneeApple Inc.
InventorsManasa Raghavan, Dawei Zhang, Qiming Li, Huaning Niu, Jie Cui, Xiang Chen, Yang Tang
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Abstract
A user equipment (UE) is configured to receive a command for a transmission configuration indicator (TCI) state change for a joint TCI state including uplink (UL) and downlink (DL) signals, decode the joint TCI state command and performing measurements necessary to receive and transmit with the target TCI state, the measurements including a pathloss (PL) measurement for an UL channel and switch to receive the DL signals and transmit the UL signals with the target TCI state no later than a time duration for a switching delay.
Claims15
A processor of a user equipment (UE) configured to perform operations comprising:
- receiving a beam switch time parameter from the network;
- receiving a command for a transmission configuration indicator (TCI) state change for a joint TCI state including uplink (UL) and downlink (DL) signals, wherein the command is transmitted via downlink control information (DCI);
- decoding the joint TCI state command and performing measurements necessary to receive and transmit with a target TCI state, the measurements including a pathloss (PL) measurement for an UL channel
- switching to receive the DL signals and transmit the UL signals with the target TCI state within a time duration for a switching delay, wherein the time duration is based on at least the beam switch time parameter;
- and
- switching from a first PL reference signal (PL-RS) to a target PL-RS, wherein the switching from the first PL-RS to the target PL-RS is completed at a same time as the switching to receive the DL signals and transmit the UL signals with the target TCI state.
A user equipment (UE), comprising:
- a transceiver configured to communicate with a network;
- and
- a processor communicatively coupled to the transceiver and configured to perform operations comprising:
- receiving a beam switch time parameter from the network;
- receiving a command for a transmission configuration indicator (TCI) state change for a joint TCI state including uplink (UL) and downlink (DL) signals, wherein the command is transmitted via downlink control information (DCI);
- decoding the joint TCI state command and performing measurements necessary to receive and transmit with a target TCI state, the measurements including a pathloss (PL) measurement for an UL channel;
- switching to receive the DL signals and transmit the UL signals with the target TCI state within a time duration for a switching delay, wherein the time duration is based on at least the beam switch time parameter;
- and
- switching from a first PL reference signal (PL-RS) to a target PL-RS, wherein the switching from the first PL-RS to the target PL-RS is completed at a same time as the switching to receive the DL signals and transmit the UL signals with the target TCI state.
A processor of a user equipment (UE) configured to perform operations comprising:
- receiving a beam switch time parameter from the network;
- receiving a command for a transmission configuration indicator (TCI) state change for a separate uplink (UL) TCI state including UL signals and not including downlink (DL) signals, wherein the command is transmitted via downlink control information (DCI);
- decoding the separate UL TCI state command and performing measurements necessary to receive and transmit with a target TCI state, the measurements including a pathloss (PL) measurement for an UL channel;
- switching to transmit the UL signals with the target TCI state within a time duration for a switching delay, wherein the time duration is based on at least the beam switch time parameter;
- and
- switching from a first PL reference signal (PL-RS) to a target PL-RS, wherein the switching from the first PL-RS to the target PL-RS is completed at a same time as the switching to receive the DL signals and transmit the UL signals with the target TCI state.
Dependencies are inferred from the claim text.