Call Admission Control in CDMA2000/WLAN Network Based on User Position Information
Call Admission Control in CDMA2000/WLAN Network Based on User Position Information
复制标题
DOI：
10.4304/jnw.7.8.1220-1226
复制
发表时间：
2012-01
期刊：
影响因子：
--
通讯作者：
Jiayin Wang;Yubin Xu;Lin Ma;Liang Chen
中科院分区：
文献类型：
--
作者：
Jiayin Wang;Yubin Xu;Lin Ma;Liang Chen
本文在CDMA 2000和WLAN的语音和数据异构网络中，提出了一种基于用户位置信息的呼叫接纳控制方案，该方案由参数测量器、新呼叫或切换呼叫到达、可用子网参数以及接纳控制器的位置和移动信息组成。接纳控制器决定是否接纳或拒绝，最后由判决执行器执行最终动作。仿真结果表明，UPBAC能够在保证QoS要求的前提下，适当地接纳或拒绝用户的请求，从而降低乒乓效应。此外，UPBAC可以实现比诸如基于RSS的算法或WLAN优先算法的传统算法更低的阻塞率，并且可以通过有效的负载均衡来显著降低切换丢弃率。
In this paper,a call admission control scheme based on user position information is proposed in the context of CDMA2000 and WLAN hererogeneous networks with voice and data traffic.The user position based call admission (UPBAC) scheme is composed of a parameter measurer,an new call or a handoff call arrives,the parameter of available subnetwork as well as the position and mobility information for the admission controller. the admission controller then decides whether to admit or reject the decision executer carries out the final actions at last. Simulation results show that UPBAC can always reduce pingpang effect while maintaining the QoS requirements in that it can appropriately admit or reject the users' sdmission requests. Also,the UPBAC can achieve lower blocking rate than conventional algorithms such as RSS based algorithm or WLAN first algorithm and can significantly reduce the handoff dropping rate by effective load balancing.