Call Admission Control in Mobile Communication System Based on Multi-service
Jia Zhen-hong · Jisuanji gongcheng · 2012
Aiming at the problem of high call blocking rate in Movable Boundary and Guard Channel(MBGC) method,this paper presents a novel call admission control algorithm.The strategy is that the new call users can use the guard channel reserved for the handoff call users with a certain probability when the handoff call dropping rate is less than a threshold.The scheme also takes into account the priority of different data types,and only when the data packet in high-priority data queue is empty,the data packets in general data queue can be transmitted.Simulation results show that,in case of affecting dropped call rate of handoff calls smaller,it can effectively reduce the new call blocking rate and high-priority data blocking rate.