| 摘要 |
Provided is a wireless base station device which can effectively utilize DCF and PCF. In a wireless base station device which controls access requests from mobile terminals belonging thereto by the DCF (Distributed Coordination Function) and controls access request from the mobile terminals by the PCF through polling due to an increase in a wireless LAN traffic, when the state where the average data size of data frame transmitted/received to/from the mobile terminals exceeds a certain value continues for a prescribed time, or the state where the accumulated data rate calculating section is higher than a prescribed threshold value, continues for a prescribed time, the communication control system is switched from the DCF to the PCF. Therefore, the time of occupying the wireless medium can be more effectively utilized by using both the DCF and the PCF, compared to the case of using only the DCF as the communication state which has a possibility of collision and requires transmission time for RBO time and DIFS time every time.
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