Invited Talk
Special Topics in Computer Science
Department of Computer Science and Information Engineering
National Chung Cheng University
February 24, 2003
The Strategies of Reducing the Location Update Traffic in Wireless Networks
林詠章 (Ioun-Chang Lin)
國中正大學資工系 (Dept CSIE, National Chung Cheng University)
Abstract
The strategy of location updating is a critical issue for tracking the current
locations of users in wireless networks. Especially when the mobile user is
located near the boundaries of networks, the signaling traffic of the location
updating will be excessively excited. In this talk, we shall propose a newly
developed scheme for reducing both the location updating rate and location
updating cost. The new scheme employs forwarding pointers in the virtual layer
architecture. The forwarding pointer is a useful tool to get rid of the
registrations at the HLR, and thus the location updating cost can be reduced.
The virtual layer architecture is efficient in lowering the high updating rate
of the current location when a user moves around the boundaries of the location
area. The strategy can significantly reduce the location updating traffic.