Iterative Optimization of Registration and Paging Policies Sichao Yang and Bruce Hajek Illinois Center for Wireless Systems Problems Ideas Paging Cost. --- bandwidth l Registration Cost. --- power and bandwidth l There is a tradeoff between these two costs l Registration Policy Notation Hexagonal Grid Motion Model Registration Policy l Continuation Region l Continuation Region Continuation Region Conclusions Continuation Region Iteration algorithm can be applied to an general l Markov Chain Mobile issues registration when it is not where l it is expected to be Continuation region tends to move with mobile l Continuation region tends to increase with l d Converge to locally optimal, but not globally l optimal