Mobility information for resource management in wireless ATM networks

User mobility poses a significant technical challenge to network resource m anagement in wireless ATM (Asynchronous Transfer Mode) networks. In order t o guarantee quality of service (QoS) to mobile users and to achieve a high efficiency in network resource management, the information of mobile users' handoff at a future moment is essential for statistical multiplexing. This paper develops a novel fuzzy logic inference system to estimate the user m obility information for a wireless ATM network which uses a direct sequence code division multiple access (DS/CDMA) protocol. The estimation is based on measured pilot signal strengths from a number of the nearest base statio ns by the mobile user. Numerical results are presented to demonstrate the p erformance of the proposed technique under various path losses and channel shadowing conditions. The proposed technique can achieve simplicity, accura cy and low cost. (C) 1999 Elsevier Science B.V. All rights reserved.