Method and apparatus for performing UE beamforming in a wireless communication system
AssigneeASUSTeK COMPUTER INC.
InventorsYu-Hsuan Guo, Meng-Hui Ou
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Abstract
A method for a wireless communications system is disclosed. In one example, a user equipment (UE) (e.g. a mobile phone), receives an indication from a network about one or more UE beams that the UE can use for transmission or reception. The UE uses the one or more UE beams for transmission or reception. If and when a certain condition is fulfilled, for example, there is a beam tracking failure, the UE transmits or receives a specific signal via a specific UE beam. The specific UE beam is different from the one or more UE beams that were indicated by the network, and is selected by the UE.
Claims20
A method for a user equipment (UE), comprising:
- receiving a first indication from a network node about at least one UE beam to be used for a transmission or a reception in a downlink sweeping subframe;
- receiving a periodic signaling from the network node associated with detection of a change of a serving beam for beam tracking;
- using the at least one UE beam for the transmission or the reception at a first time;
- and
- responsive to the UE detecting failure of the beam tracking based on the periodic signaling at a second time:
- selecting, by the UE, a second UE beam, wherein the second UE beam is different than the at least one UE beam;
- and
- transmitting a second indication about the change of the serving beam using the second UE beam.
A user equipment (UE), comprising:
- a control circuit;
- a processor installed in the control circuit;
- and
- a memory installed in the control circuit and operatively coupled to the processor, wherein the processor is configured to execute a program code stored in the memory to perform operations comprising:
- receiving a first indication from a network node about at least one UE beam to be used for a transmission or a reception in a downlink sweeping subframe;
- receiving a periodic signaling from the network node associated with detection of a change of a serving beam for beam tracking;
- using the at least one UE beam for the transmission or the reception at a first time;
- and
- responsive to the UE detecting failure of the beam tracking based on the periodic signaling at a second time:
- selecting, by the UE, a second UE beam, wherein the second UE beam is different than the at least one UE beam;
- and
- transmitting a second indication about the change of the serving beam using the second UE beam.
Dependencies are inferred from the claim text.