Patent ID: 8755314
Filing Date: 2014-06-17
Classification: H04W,Y02D

Abstract:
1. A method of operating a listening window by a mobile station in a wireless communication system, the method comprising: receiving a sleep response message from a base station during an active mode, the sleep response message including a length of an initial sleep cycle that comprises only a sleep window interval; operating in a sleep mode during the initial sleep cycle based on the received sleep response message; receiving a traffic indication message from the base station during a first listening window of a first sleep cycle after the initial sleep cycle, the first sleep cycle comprising a first sleep window and the first listening window; resetting a length of the first sleep cycle to the length of the initial sleep cycle when the traffic indication message indicates positive traffic; receiving an indicator from the base station during the first listening window, the indicator indicating that a specific protocol data unit (PDU) is a last PDU in a downlink (DL) buffer; terminating the first listening window before an expiration of the first listening window according to the indicator; and entering the first sleep window after terminating the first listening window.