Heuristic strategy for a delay bound location tracking in PCS networks

Location tracking in a personal communications services (PCS) network requires location update and paging. These procedures incur a large signaling cost as the demand for these services increases. In a location update process, the mobile terminal (MT) registers with the system when it enters into a new location area (LA) that contains many cells. In a paging process, the network system initiates a search process to find the mobile terminal to deliver an incoming call. A heuristic location tracking strategy is proposed based on location probability models that aims to reduce the signaling cost involved in paging process under delay bounds. Numerical results demonstrate that this paging strategy performs better than other methods [W. Wang et al., (2001)] for both uniform and non-uniform location probability distributions.