Development of a mobility management simulator for 3G cellular network

Location management which keeps track of the mobile terminals moving from place to place in a wireless networks is a key issue in resource management particularly in 3G cellular networks. Two basic operations are involved in location management: location update and paging. It is necessary to provide a good trade off between location update and paging to reduce the total cost. This goal however needs good algorithms for both registration and paging. We propose a dynamic movement-base location management scheme for 3G networks where Home Location Registers (HLR´s), Gateway Location Registers (GLR´s), and Visitor Location Registers (VLR´s) are formed into three level hierarchical mobility data base structure. A simulator based on MATLAB which can study location update and paging performance was developed. It is expected that the average number of location updates could be reduced using the movement-base scheme.