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Call admission control for voice/data integrated cellular networks: performance analysis and comparative study

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5 Author(s)
Bin Li ; Dept. of Comput. Sci., Hong Kong Univ. of Sci. & Technol., Kowloon, China ; Lizhong Li ; Bo Li ; Sivalingam, K.M.
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In this paper, we propose a new call admission control scheme called dual threshold bandwidth reservation, or DTBR scheme. The main novelty is that it builds upon a complete sharing approach, in which the channels in each cell are shared among the different traffic types and multiple thresholds are used to meet the specific quality-of-service (QoS) requirements. We present a detailed comparative study based on mathematical and simulation models, and quantitatively demonstrate that the DTBR is capable of providing the QoS guarantee for each type of traffic, while at the same time leading to much better channel efficiency. We further show that the DTBR scheme with elastic data service can offer both service guarantee and service differentiation for voice and data services, and enhance the bandwidth utilization.

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Selected Areas in Communications, IEEE Journal on  (Volume:22 ,  Issue: 4 )