Mitigating Handoff Call Dropping in Wireless Cellular Networks: A Call Admission Control Technique

被引：1

作者：

Ekpenyong M.E. ^{[1
]}

Udoh V.I. ^{[1
]}

Bassey U.J. ^{[2
]}

机构：

[1] Department of Computer Science, University of Uyo, P.M.B. 1017, Uyo

[2] Department of Mathematics and Statistics, University of Uyo, P.M.B. 1017, Uyo

来源：

Journal of The Institution of Engineers (India): Series B | 2016年 / 97卷 / 02期

关键词：

Call admission control; Call dropping; Quality of service; Soft handoff;

D O I：

10.1007/s40031-014-0170-4

中图分类号：

C93 [管理学]; T [工业技术];

学科分类号：

08 ; 12 ; 1201 ; 1202 ; 120202 ;

摘要：

Handoff management has been an important but challenging issue in the field of wireless communication. It seeks to maintain seamless connectivity of mobile users changing their points of attachment from one base station to another. This paper derives a call admission control model and establishes an optimal step-size coefficient (k) that regulates the admission probability of handoff calls. An operational CDMA network carrier was investigated through the analysis of empirical data collected over a period of 1 month, to verify the performance of the network. Our findings revealed that approximately 23 % of calls in the existing system were lost, while 40 % of the calls (on the average) were successfully admitted. A simulation of the proposed model was then carried out under ideal network conditions to study the relationship between the various network parameters and validate our claim. Simulation results showed that increasing the step-size coefficient degrades the network performance. Even at optimum step-size (k), the network could still be compromised in the presence of severe network crises, but our model was able to recover from these problems and still functions normally. © 2014, The Institution of Engineers (India).

引用

页码：167 / 174

页数：7

共 17 条

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