Methods and apparatus for overload mitigation using uplink transmit power backoff

摘要

Certain aspects of the disclosure relate generally to uplink flow control of wireless devices for mitigation of overload issues. A user equipment (UE) may reduce an average transmit power for the uplink channel based on whether an overload metric (e.g., temperature metric) exceeds a threshold value. The UE may perform duty cycling for an uplink control channel when an overactive uplink control channel is a dominating factor in a thermal issue. The UE may further reduce a maximum power transmit limit (MTPL) for one or more uplink channels, such as physical uplink control channel (PUCCH) and physical uplink shared channel (PUSCH).

主权项

1. A method for wireless communications, comprising:
determining whether an overload metric has exceeded a corresponding threshold value; modifying a transmit power of at least one uplink control channel during a first time interval if the overload metric has exceeded the corresponding threshold value, by selectively not transmitting at least a portion of the uplink control channel during an off-cycle period of the first time interval; determining, after expiration of the first time interval, whether the overload metric still exceeds the threshold value; modifying a duration of the off-cycle period based at least in part on the overload metric; and selectively not transmitting at least a portion of the uplink control channel during a second time interval for a duration of the modified off-cycle period.