Patent ID: 8218469

Claim:
A system for wireless communication, the system comprising a Relay Station (RS), wirelessly coupled to a Base Station (BS), and to a subscriber station, wherein the RS is configured to receive downlink data from the BS arranged in a first downlink relay zone of a first downlink sub-frame and transmit the downlink data arranged in a second downlink relay zone of a second downlink sub-frame to the subscriber station; and the RS is further configured to receive uplink data from the subscriber station in a second uplink relay zone of a second uplink sub-frame and transmit the uplink data arranged in a first relay zone of a first uplink sub-frame to the BS; wherein, the BS is configured to directly transmit Preamble, Frame Control Header (FCH), Downlink-MAP (DL-MAP), Uplink-MAP (UL-MAP) information to the subscriber station by a predetermined channel encoding and modulation mode, or by employing a predetermined transmission power; wherein multiple timeslots or multiple subchannels defining combinations of Orthogonal Frequency Division Multiple, OFDM, symbols and subchannels are arranged in the downlink and uplink relay zones; and the relay data are transmitted and received based on corresponding timeslots or combination of OFDM symbols and subchannels at entity among the BS, the RS and the subscriber station; wherein an uplink contention timeslot is arranged in the uplink sub-frame of the physical layer frame structure of the BS, an unlink contention timeslot is arranged in the uplink sub-frame of the physical layer frame structure of the RS, an uplink contention transmitting timeslot in the physical layer frame structure of the RS, the uplink contention timeslot of the BS comprising an initial ranging contention timeslot and a bandwidth request contention timeslot, and is configured in each frame; the uplink contention timeslot of the RS arranged when the BS can not directly communicate with a subscriber station within coverage of the RS, comprising an initial ranging contention timeslot and a bandwidth request contention timeslot, if the RS is provided with two radio transceivers, the uplink contention timeslot is configured in physical layer frame structure of a radio transceiver corresponding to a subscriber station; the uplink contention transmitting timeslot of the RS configured in each sub-frame, defining transmitting timeslot of the RS for contending for timeslots within the uplink contention timeslot of the BS, wherein the uplink contention transmitting timeslot of the RS is entirely overlapped and synchronized with the uplink contention transmitting timeslot of the BS; if the RS is provided with two radio transceivers, the uplink contention transmitting timeslot is arranged in physical layer frame structure of a radio transceiver corresponding to the BS.