Performance Evaluation of Hand-Off Scheme With Cell Breathing Concept in WCDMA.
Nagendra Sah Neelum Rup Prakash - · International Journal of Advancements in Computing Technology · 2009
There are many issues when we implement a cellular system like bandwidth, channel assignment, cell structure etc. but call admission control in a cellular network become a most important issue. Call admission control not only utilize bandwidth efficiently but also decreases the new call blocking and handoff call dropping probability to an acceptable level. Call admission control (CAC) is a fundamental mechanism used for QOS(Quality of Service) provisioning in a network. It restricts the access to the network based on resource availability in order to prevent network congestion and service degradation for already supported users. In this paper, we consider a call admission control scheme for wideband code division multiple access (WCDMA) system. This call admission control uses cell breathing concept. In this scheme we also consider the condition of neighboring cell while making the decision on call request. The objective is to reduce the new call blocking and handoff call dropping probability and efficient utilization of available bandwidth while maintaining the desired level quality of service requirement.