| 摘要 |
The present invention relates to an method of medium access control for a wireless system that makes possible a subscriber station located out of coverage area of a base station communicate with the base station with the help of a relay station. The method includes broadcasting a polling packet by the relay station during the contention period, receiving the polling packet by the relayed subscriber station, transmitting a packet by the relayed subscriber station to the relay station during a predetermined period, and transmitting the packet to the base station by the relay station in the contention period after passing the predetermined period.
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