Device and method for synchronous beam switching
AssigneeApple Inc.
InventorsWenting Chang, Yuan Zhu, Yushu Zhang, Gang Xiong, Huaning Niu
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Abstract
Devices for and methods of synchronous beam refinement using a beam refinement reference signal (BRRS) are generally described. In one example embodiment, a UE receives BRRS information indicating switching of a Tx beam. The UE then uses this information to switch an associated Rx beam. In some embodiments, timing information is used to match the switching times. In some embodiments, DCI and CSI-RS operations are used to determine switching for the synchronous beam refinement.
Claims20
An apparatus of a user equipment (UE), the apparatus comprising:
- a memory;
- and
- processing circuitry in communication with the memory and arranged to:
- decode a downlink control information (DCI) received from a network node that includes an indication of transmitter (TX) beam switching;
- in response to the DCI, receive signals from the network node using an updated receive (Rx) beam corresponding to an updated TX beam, instead of a first Rx beam, after application of a time offset for application of beam switching.
A network node, comprising:
- a radio;
- a memory;
- and
- processing circuitry in communication with the memory and the radio and arranged to:
- transmit a downlink control information (DCI) to the UE that includes an indication of transmitter (TX) beam switching, wherein the DCI indicates for the UE to receive signals from the network node using an updated receive (Rx) beam corresponding to an updated TX beam, instead of a first Rx beam, after application of a time offset for application of beam switching;
- and
- transmit signals associated with the updated Tx beam.
A method for operating a user equipment (UE) device, the method comprising:
- decoding a downlink control information (DCI) received from a network node that includes an indication of transmitter (TX) beam switching;
- in response to the DCI, receiving signals from the network node using an updated receive (Rx) beam corresponding to an updated TX beam, instead of a first Rx beam, after application of a time offset for application of beam switching.
Dependencies are inferred from the claim text.