Patent ID: 7688770
Filing Date: 2010-03-30
Classification: H04B,H04L,H04W,Y02D

Abstract:
1. A method of allocating a transmission period in a frame period in a wireless network system, the method comprising: transmitting a first power save multi-poll (PSMP) frame allocating a downlink period and an uplink period to a station (STA); transmitting data to the STA during the downlink period and receiving data from the STA during the uplink period; transmitting a subsequent PSMP frame allocating at least one of an additional downlink period and an additional uplink period to the STA; and retransmitting data to the STA during the additional downlink period in response to there being data to be retransmitted, and receiving data retransmitted from the STA during the additional uplink period in response to there being data to be retransmitted from the STA, wherein the subsequent PSMP frame is an additional PSMP frame to follow the first PSMP frame in the frame period having periodic duration.