Young-Long Chen1, Jyu-Wei Wang2, Jyh-Liang Chen3 and Jyh-Horng Wen4* 1,3,4 Department of Electrical Engineering, National Chung Cheng University168, University Rd., Ming-Hsiung, Chia-Yi, Taiwan, R.O.C.
1 Department of Electrical Engineering, Chienkuo Technology University, Taiwan. R.O.C.
2 Department of Computer and Communication Engineering, Asia University, Taiwan R.O.C.
4 Department of Electrical Engineering, Tunghai University, Taiwan. R.O.C.
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Conventional call admission control (CAC) methods generally accept (or reject) newcall arrivals on the basis of measured information such as the signal-to-interference ratio (SIR) orthe total received power in the individual cells. However, this paper proposes a novel approachwhich combines the CAC and power control mechanisms and operates in a centralized controlmanner. The essence of the proposed centralized call admission control (CCAC) scheme is tocombine the two mechanisms and to treat the call admission decision as an eigen-decompositionproblem. In the proposed approach, a new call is accepted only if the quality-of-service (QoS)requirements of all the active links in the network can still be maintained. In order to reduce thecomputational complexity of the eigen-decomposition problem, the paper proposes an additionalscheme which uses a norm operation rather than direct computation. The simulation results indicatethat the proposed scheme, even with the norm approximation, outperforms conventional calladmission methods both in terms of its blocking rate and its outage rate.ABSTRACT
Keywords:
call admission control; signal-to-interference ratio (SIR); eigen-decomposition problem, norm operation.
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ARTICLE INFORMATION
Available Online:
2007-05-01
Chen, Y.-L., Wang, J.-W., Chen, J.-L., Wen, J.-H. 2007. Performance of call admission control with power controlin multimedia cellular systems. International Journal of Applied Science and Engineering. 5, 65–74, https://doi.org/10.6703/IJASE.2007.5(1).65
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