Patent ID: 8576738

Claim:
A method for sharing a subchannel, comprising: obtaining downlink state information and uplink state information of a subchannel; and scheduling the subchannel according to the downlink state information and uplink state information of the subchannel, and allocating the subchannel to an uplink Mobile Station (MS) and/or a downlink MS; wherein scheduling the subchannel according to the downlink state information and uplink state information of the subchannel comprises one or more processes of: a process of: calculating a sum of uplink traffic of the uplink MS corresponding to the subchannel and downlink traffic of the downlink MS corresponding to the subchannel according to channel quality and interference information in the uplink state information and downlink state information of the subchannel, selecting a subchannel with the greatest sum of traffic and finding the corresponding uplink MS and downlink MS, and allocating the selected subchannel to the corresponding uplink MS and downlink MS; and a process of: using channel quality and interference in the uplink state information as input, calculating a ratio of channel quality to interference for each subchannel, and selecting a subchannel with the greatest ratio and the corresponding uplink MS as a combination, using channel quality and interference in the downlink state information as input, calculating a ratio of channel quality to interference for each subchannel, and selecting a subchannel with the smallest ratio and the corresponding downlink MS as a combination, and comparing the ratio of uplink channel quality to interference with the ratio of downlink channel quality to interference, and allocating the subchannel in the combination with the greater ratio to the uplink MS or downlink MS in this combination.