A distributed multiple access technique for radio resource allocation in unlicensed wireless ATM LANs

A distributed multiple access technique for radio resource management is presented. The proposed Distributed Dynamic Channel Reservation (DDCR) method applies to mutlicarrier wireless ATM LANs, where base stations act as hubs to offer wireless ATM access to mobile units. The method is suitable for unlicensed wireless systems, where base stations are installed in a common coverage area. According to the proposed approach, base stations compete to access and reserve time on separate frequencies, using a dynamic TDMA/TDD technique, combined with listening and competing periods. Etiquette rules, contention disciplines and medium access control mechanisms are proposed. Procedures for terminal association and registration, and solutions for the hidden terminal problem are introduced. Finally, the performance of the presented contention disciplines is evaluated and compared through simulations.