Edblu: Enhanced Direction-based Location Update Scheme for PCS networks

An enhanced direction-based location update scheme (EDBLU) is presented. Unlike the direction-based location update (DBLU) scheme, in EDBLU the location update depends on both the moving direction and the moving distance. The performance of EDBLU is analysed based on the discrete-time 2D Markov walk model. The results confirm that the EDBLU scheme reduces the signalling cost significantly for different mobility patterns