Patent ID: 7706816
Filing Date: 2010-04-27
Classification: H04B,H04L,H04W,Y02D

Abstract:
1. A station (STA) apparatus for receiving an allocated transmission period in a frame period in a wireless network system, the apparatus comprising: a processor which analyzes a first power save multi-poll (PSMP) frame allocating a downlink period and an uplink period provided by an access point (AP), and a subsequent PSMP frame provided by the AP allocating at least one of an additional downlink period and an additional uplink period after the downlink and uplink periods; and a transceiver which receives data from the AP during the downlink period and transmits data to the AP during the uplink period, and receives data retransmitted from the AP during the additional downlink period in response to there being data to be retransmitted from the AP and retransmits data to the AP during the additional uplink period in response to there being data to be retransmitted, wherein the subsequent PSMP frame is an additional PSMP frame to follow the first PSMP frame in the frame period having a periodic duration.