Adaptive algorithm for mobile terminal power on/off state management

Two mobile terminal (MT) power on/off state management schemes are introduc ed based on the level of location registers (LRs) for managing the state in formation of MTs. The performance of the two MT power on/off state manageme nt schemes is compared based on the expected on/off duration and the expect ed number of incoming call arrivals between two consecutive detach and atta ch requests (call-to-transition ratio (CTR)). An adaptive algorithm is prop osed here that incorporates both schemes for each mobile user. The results show that as the CTR value of a mobile user varies, the proposed algorithm adaptively selects an appropriate scheme in real time. (C) 2001 Elsevier Sc ience B.V. All rights reserved.