A new strategy for managing user's locations in PCS networks using hot spots topology: discussion and analysis

Abstract

As PCS networks aim to provide 'anytime-anywhere' cellular services, mobile terminals' (MTs) locations should be managed continuously. Location management (LM) includes two processes; registration and paging. Registration concerned with reporting MTs current locations, while, paging locates the callee MT. Both processes incur signalling cost across the wireless channel, which need to be reduced due to the scarcity of PCS wireless bandwidth. In spite of its minimal latency, blanket paging, used in current networks, wastes the network bandwidth. This paper aims to reduce the paging signalling cost under delay bounds. The paper contributions can be summarised as: 1) establishing a family of paging strategies under two proposed probability based LM strategies (PBLM and MPBLM); 2) introducing a novel topology for PCS registration area called the 'hot spot topology' (HST); 3) based on HST, another new LM strategy called 'flower based location management' (FBLM) is introduced. The proposed paging strategies substantially lower the signalling cost compared with the blanket one. Also, experimental results have shown that FBS dramatically reduce the signalling load (up to 80%) with a minimal increase in paging delay.