A QoS-oriented dynamic channel assignment method for wireless ATM LANs

A centralized approach for Dynamic Channel Assignment (DCA) in wireless systems is presented. The proposed method applies to structured wireless LANs, where base stations act as hubs to offer wireless access to mobile terminals. We focus on wireless ATM LANs, although the method applies also to other packet-based systems, offering Quality-of-Service (QoS) guarantees. A Central Scheduler for DCA (CSDCA) is introduced for the dynamic assignment of resources to the requesting base stations. This scheduler takes into account mutual interference constraints of the base stations, current resource usage, and delay constraints of active connections. Simulation results have shown the improved performance attained by the proposed method.