Broadband radio connection communication device

摘要

The communication device extracts frame data originated by the base station and obtains the parameters of using bandwidth, stored in the header of the frame data. Free bandwidth is calculated by subtracting an already used band from the full band of the base station. It is determined whether the free band can accommodate the band that its own terminal desires to use. If it can be accommodated, a network entry sequence is run in order for the terminal to communicate with the base station since communications with the base station is available.