A study on performance optimization technique of location registration in public transportation

Abstract

Location Registration means that a mobile station (terminal) notifies its location to a base station and MSC. It is helpful to page terminals in cellular system. The location is divided by zone including several cells. When the terminal goes through the boundary between two zones and enters a new zone, it has to register its location through system access procedure. If a lot of terminals transmit location registration messages at the boundary concurrently in case of being transported by public transportation system like subway, many competitions occur and consequently many registrations will fail and have to retry. In this paper, we will present the result measured in real subway environment and test system which varies some parameters in order to optimize the performance.