Patent ID: 8116329

Claim:
A relay station (RS) for use in a wireless mesh network, the wireless mesh network comprising a base station (BS), the RS being located within a coverage area of the BS, the RS comprising: a receiving/transmission module, being configured to receive a BS beacon of the BS in a first period of time; and a determination module, being configured to determine that the BS attempts to transmit a first data to the RS as a determination result according to the BS beacon; wherein the receiving/transmission module is further configured to transmit a power saving poll to the BS in the first period of time in response to the determination result, receive a power saving poll acknowledgement (ACK) of the BS in response to the transmission of the power saving poll, and receive the first data of the BS in a second period of time after the first period of time, wherein a sum of the first period of time and the second period of time in time length is equal to a beacon interval in time length.