Load balancing scheme based on real time traffic in wibro

Abstract

The WiBro operates at the 2.3GHz broadband and the communication infrastructure is a cellular system. The WiBro is based on IEEE 802.16e standard and it is designed to maintain connectivity on mobile environment at a speed of up to 60 km/h. ACR(Access Control Router) manages several RAS(Radio Access Station). When mobile node moves to another domain from the present domain, which is managed by different ACR, MN sends Binding Update to HA (Home Agent) or CN (Correspondent Node). However ACR may be a single point of performance bottleneck because the ACR should not only handle signaling traffics but also process data tunneling traffic for all MNs registered in its domain. In this paper, we propose ACR load balancing method by priority queue. Quantitative results of the performance analysis show that our proposal has superior performance. © 2009 Springer Berlin Heidelberg.