| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a master station and an access control method being capable of easily avoiding interference between communication systems while assuring QoS of a communication bandwidth of each communication system without performing transmission power control in a plurality of communication systems sharing the same channel. <P>SOLUTION: A communication bandwidth is divided into a beacon period in which all master stations compete for transmission of a beacon packet, a first carrier sense multiple access (CSMA) period in which only authorized specific stations are allowed to compete for access, and a second CSMA period in which all stations are allowed to compete for access. The master stations exchange information with each other about a communication bandwidth being used in the first CSMA period, thereby calculating a communication bandwidth which can be used by each communication system in the first CSMA period, on the basis of the information. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
