Patent ID: 7212546

Claim:
An access control method for controlling a communication band for access to a network in a time-division manner, said method being for use in a communication network system including a plurality of communication terminals, said method comprising: steps performed by a communication terminal that is to transmit data, comprising: generating a transmission packet including transmission information, transmission data, and transmission data length, said transmission information indicating an amount of data remaining in a transmission buffer, said transmission data including data from the transmission buffer, and said transmission data length indicating a length of the transmission data; and transmitting the transmission packet including the generated transmission information, the transmission data, and the transmission data length over the network, and steps performed by any one of the communication terminals, comprising: obtaining transmission information related to transmission between a first communication terminal and a second communication terminal of other communication terminals from the transmission packet transmitted on the network; and controlling communication bands allocated to the first communication terminal and the second communication terminal of the other communication terminals based on the obtained transmission information.