Mobility Management for Personal Communications Systems

Timothy X Brown Seshadri Mohan

To appear: 1997 IEEE Transactions on Vehicular Technology

Abstract:
Using a combination of empirical data and theoretical models, this
paper develops a model of user behavior for a personal communications
system environment. This model is used to analyze a mobility management
strategy that combines automatic updates by the users-either when they
make significant moves or when they go extended periods without network
interaction; multiple hysteresis in the form of dynamic registration
areas and delayed updates; and a focused paging strategy that minimizes
the number of pages given a constraint on the time allowed to page.
Over a range of system and user parameters, the total paging and update
traffic can be kept below 1 per 2000 user seconds. The impact on the
user's handset is less than 10 brief updates per day. The total traffic
is only a factor of three more than the minimum, immobile users case.