Performance Analysis of a Fault-Tolerant Scheme for Location Management of Mobile Hosts

We consider the problem of location management of mobile users. The objective is to keep track of the mobile users in order to deliver calls. The IS-41 is a simple strategy for location management used in North America. This strategy is not e cient for some movement and call patterns. Many strategies have been proposed to address e ciently given movement and call patterns. For mobile users who move frequently but receive relatively rare calls, a forwarding scheme has been shown to outperform the normal IS-41 location management scheme. But the forwarding scheme is more vulnerable to intermediate Visitor Location Registers VLRs failure than the IS-41 scheme. On the other hand, the call set-up with forwarding pointers may be costly, as a list of pointers must be traversed. We propose a simple variation to the forwarding scheme to address the fault tolerance weakness and the call set-up cost. The idea is to maintain two paths from the home location server to the last VLR with each path be...

• Type: Conference
• Year: 1998
• Where: IPPS
• Authors: Saad Biaz, Nitin H. Vaidya
• Keywords: Distributed And Parallel Computing, Forwarding Scheme, IPPS 1998, Location Management, Mobile Users