Location Tracking in IP-based Mobile Networks

This paper presents a mobility tracking mechanism for IP-based networks. The Motivation behind proposed mechanism is that most of the mobile hosts tend to move locally within a limited geographical area. We have observed that a recently proposed mobility management scheme, called Dynamic hierarchical Mobile IP (DHMIP) performs better than MIP in terms of saving in signaling cost. But, it is not suitable for low call-tomobility ratio (CMR). Our proposal provides significant improvement over DHMIP for low CMR values, typically less than 1. We use random-walk mobility model and analyze the results using continuous-time Markov chain. The result has been compared with MIP and DHMIP. ....................................................................