QUALCOMM Incorporated
User Device Communications Audio Link Recovery

Abstract:

Methods executed by a processor of a user equipment for recovering a communication audio link during a voice call are disclosed. The processor of the user equipment may detect a potential audio link codec problem during an active voice call based on an audio link pattern, determine whether the detected potential audio link codec problem is resolved before expiration of a failure declaration timer that was started in response to detecting the potential audio link codec problem, and initiating a radio link failure recovery procedure in response to determining that the detected potential audio link codec problem has not been resolved before expiration of the failure declaration timer. The failure declaration timer may be started in response detecting any of a repeating homing sequence, repeating data sequences, threshold data or packet loss, receipt of undecodable patterns in vocoder data, or jitter in vocoder output.