Performance Evaluation and Optimal Management of Distance-Based Registration Using a Semi-Markov Process

Jae Joon Suh,Jang Hyun Baek,Kyeongtaek Kim,Hee-Seon Jang

doi:10.1155/2017/1432586

Abstract

We consider the distance-based registration (DBR) which is a kind of dynamic location registration scheme in a mobile communication network. In the DBR, the location of a mobile station (MS) is updated when it enters a base station more than or equal to a specified distance away from the base station where the location registration for the MS was done last. In this study, we first investigate the existing performance-evaluation methods on the DBR with implicit registration (DBIR) presented to improve the performance of the DBR and point out some problems of the evaluation methods. We propose a new performance-evaluation method for the DBIR scheme using a semi-Markov process (SMP) which can resolve the controversial issues of the existing methods. The numerical results obtained with the proposed SMP model are compared with those from previous models. It is shown that the SMP model should be considered to get an accurate performance of the DBIR scheme.

Highlights

In a mobile communication system, continuous management of the mobile station (MS) location is required to connect an incoming call to the user, since the user is continually moving
The distance-based registration (DBR) scheme has significant merits in that location registration (LR) happens infrequently compared with the movement-based registration (MBR) scheme and there is no ping-pong effect, which happens in the zone-based registration (ZBR) scheme
Note that the LR cost of the semi-Markov process (SMP) model is less or more than that of the imbedded Markov chain (IMMC) model depending on the cell sojourn-time distributions

Summary

Introduction

In a mobile communication system, continuous management of the mobile station (MS) location is required to connect an incoming call to the user, since the user is continually moving. Various LR schemes have been proposed for mobile communication systems [1,2,3,4,5,6,7,8] They include a DBR scheme [1,2,3,4,5], a movement-based registration (MBR) scheme [2, 6, 7], and a zone-based registration (ZBR) scheme [8]. To improve the performance of the DBR scheme, the DBR considering the implicit registration effect of incoming and outgoing calls, called the DBIR scheme, was proposed and its performance was analyzed by a continuous-time Markov chain (CTMC) or an imbedded Markov chain (IMMC) [3, 5]. We show the exact performanceevaluation results and the optimal management plan for the DBR scheme using the proposed SMP method in various operational environments

Performance-Evaluation Issues of the DBIR Scheme

Existing Performance-Evaluation Methods for the DBIR Scheme

New Performance-Evaluation Method Using SMP

Numerical Results and Comparison

Conclusion