WIRELESS NETWORK

摘要

PROBLEM TO BE SOLVED: To solve a problem of a conventional polling communication whose transmission efficiency reduces to 1/2 in comparison with that of direct communication because a control station relays transmission data even when a destination communication station can directly receive the transmission data in the polling communication for the control station for a non-contention communication period. SOLUTION: A communication station having obtained a permission of use of a time window for a time division period adopts the TDMA system that spontaneously transmits data by a time window that obtains the use of permission when a time denoting start of the designated time window comes. When two-way communication is desired for the time window communication period between specific communication stations, each communication station executes a call connection procedure and acquires each transmission time window to realize the two-way communication. When the time window communication period is finished and the non-contention communication period remains, the control station applies polling to the communication stations to give a transmission right to each communication station.