Paging and Location Management in IEEE 802.16j Multihop Relay Network

Kuan-Po Lin,Hung-Yu Wei

doi:10.1155/2010/916569

Abstract

IEEE 802.16j is an emerging wireless broadband networking standard that integrates infrastructure base stations with multihop relay technology. Based on the idle mode operation in IEEE 802.16j, we propose a novel location management and paging scheme. It integrates the paging area-based and the timer-based location update mechanism. In paging area-based scheme, an idle mode mobile station updates when it moves to a new paging area. In timer-based scheme, an idle mode MS updates when the location update timer expires. In this work, we formulate the mathematical model to evaluate the performance of the proposed paging scheme. A new random walk mobility model that is suitable for modeling in multihop relay network is created. Optimization of location update timer is also investigated.

Highlights

IEEE 802.16 standard [1] is an emerging broadband wireless access system to provide users with highspeed multimedia services
Packets are either directly transmitted from Multihop Relay BS (MRBS) to Mobile Stations (MSs), if an MS is located in the central cell, or forwarded through two-hop-relay transmission
We investigated the paging and location management scheme in the IEEE 802.16j multihop relay networks

Summary

Introduction

IEEE 802.16 standard [1] (or WIMAX) is an emerging broadband wireless access system to provide users with highspeed multimedia services. The IEEE 802.16e standard provides mobility support for WiMAX system. Paging mechanism and MS idle mode operation are defined to save power in mobile IEEE 802.16e system. Whenever an incoming data message arrives, the network applies paging mechanism to wake up the dormant MS. MS still needs to update its location occasionally so that network only needs to perform broadcast paging in selected cells when a data message arrives. Tradeoff between signaling cost and location precision of idle mode MS is the main design issue in paging and location update protocol design. We propose a novel paging and location update algorithm that integrates timer-based scheme and location-based paging area scheme for IEEE 802.16j system.

Mobility Model

Paging Performance Analysis

Performance Evaluation

Conclusion

Findings

V: Eigenvector matrix of Ts