Beamforming interference mitigation signaling
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of an interference threshold for interference caused by beamforming at the UE. The UE may transmit a signal using a beam with an interference value that satisfies the interference threshold. Numerous other aspects are described.
1 . A method of wireless communication performed by a user equipment (UE), comprising:
receiving an indication of an interference threshold for interference caused by a side lobe generated by beamforming at the UE; and
transmitting a signal using a beam with an interference value that satisfies the interference threshold,
wherein the interference threshold indicates a threshold gain offset of the side lobe generated by the beamforming at the UE.
2 . A method of wireless communication performed by a user equipment (UE), comprising:
receiving an indication of an interference threshold for interference caused by a side lobe generated by beamforming at the UE; and
transmitting a signal using a beam with an interference value that satisfies the interference threshold,
wherein a side lobe of the beam with the interference value that satisfies the interference threshold has a first gain, a main lobe of the beam has a second gain, and the interference value satisfies the interference threshold due to the first gain being lower than the second gain by at least the interference threshold.
3 . The method of claim 1 , wherein transmitting using the beam further comprises transmitting using at least a minimum number of antenna elements based at least in part on the interference threshold.
4 . The method of claim 1 , further comprising selecting, from a set of beams corresponding to the interference threshold, the beam.
5 . The method of claim 4 , wherein;
the set of beams correspond to the interference threshold based on the set of beams being generated using a minimum number of antenna elements corresponding to the interference threshold; or
the set of beams comprise at least one of one or more beams defined by a synchronization signal block index, one or more beams defined by a channel state information reference signal index, or one or more beams defined by a sounding reference signal index.
6 . The method of claim 1 , further comprising: transmitting information indicating one or more beamformed reference signals corresponding to one or more beams that violate the interference threshold at the UE.
7 . A method of wireless communication performed by a network entity, comprising:
identifying an interference threshold for interference caused by beamforming at a user equipment (UE); and
outputting an indication of the interference threshold for the interference caused by beamforming at the UE.
8 . A user equipment (UE) for wireless communication, comprising one or more processors, coupled to memory, and configured to cause the UE to:
receive an indication of an interference threshold for interference caused by a side lobe generated by beamforming at the UE; and
transmit a signal using a beam with an interference value that satisfies the interference threshold,
wherein the interference threshold indicates a threshold gain offset of the side lobe generated by the beamforming at the UE.
9 . A network entity for wireless communication, comprising one or more processors, coupled to memory, and configured to cause the network entity to:
identify an interference threshold for interference caused by beamforming at a user equipment (UE); and
output an indication of the interference threshold for the interference caused by beamforming at the UE.
10 . A user equipment (UE) for wireless communication, comprising one or more processors, coupled to memory, and configured to cause the UE to:
receive an indication of an interference threshold for interference caused by a side lobe generated by beamforming at the UE; and
transmit a signal using a beam with an interference value that satisfies the interference threshold,
wherein a side lobe of the beam with the interference value that satisfies the interference threshold has a first gain, a main lobe of the beam has a second gain, and the interference value satisfies the interference threshold due to the first gain being lower than the second gain by at least the interference threshold.
11 . The UE of claim 8 , wherein to transmit using the beam, the one or more processors are further configured to cause the UE to transmit using at least a minimum number of antenna elements based at least in part on the interference threshold.
12 . The UE of claim 8 , wherein the one or more processors are further configured to cause the UE to select, from a set of beams corresponding to the interference threshold, the beam.
13 . The UE of claim 12 , wherein:
the set of beams correspond to the interference threshold based on the set of beams being generated using a minimum number of antenna elements corresponding to the interference threshold; or
the set of beams comprise at least one of: one or more beams defined by a synchronization signal block index, one or more beams defined by a channel state information reference signal index, or one or more beams defined by a sounding reference signal index.
14 . The UE of claim 8 , wherein the one or more processors are further configured to cause the UE to: transmit information indicating one or more beamformed reference signals corresponding to one or more beams that violate the interference threshold at the UE.
15 . The UE of claim 14 , wherein the one or more processors are further configured to cause the UE to; receive an indication to switch to the beam based at least in part on the information indicating the one or more beamformed reference signals; or wherein the one or more processors are further configured to receive a configuration of a set of beamformed reference signals based at least in part on the information indicating the one or more beamformed reference signals.
16 . The method of claim 6 , wherein the method further comprises: receiving an indication to switch to the beam based at least in part on the information indicating the one or more beamformed reference signals; or receiving a configuration of a set of beamformed reference signals based at least in part on the information indicating the one or more beamformed reference signals.
17 . The method of claim 7 , wherein the interference threshold indicates a threshold gain offset of the side lobe generated by the beamforming at the UE.
18 . The network entity of claim 9 , wherein the interference threshold indicates a threshold gain offset of the side lobe generated by the beamforming at the UE.