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arXiv 1502.06329cs.NI
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无线蜂窝网络中使用最优呼叫接纳控制的QoS供应

QoS Provisioning Using Optimal Call Admission Control for Wireless Cellular Networks

Md. Asadur Rahman

摘要:

无线网络中对高级服务的日益增长的需求提出了利用适当的资源管理来提供服务质量(QoS)的问题。在这项研究中,这样的无线网络的配置技术是由呼叫准入控制(CAC)。本文提出了一种新的呼叫接入控制方法,即统一分数频带(UFB),用于在无线网络中为新呼叫和切换呼叫提供适当的优先级。该UFB方案基本上是一种新型的切换优先级方案。在该方案中,切换优先级由两个阶段提供,这有助于网络利用更多的资源。此外,切换呼叫速率估计和它的QoS供应的影响进行了广泛的讨论,以达到最佳的QoS在建议的切换优先级方案。在提供多业务的无线网络中,低优先级业务的过度呼叫阻塞经常在非常高的业务速率下发生,这是QoS提供的一个关注问题。为了实现这样的QoS提供多个服务,另一个CAC计划,提出了这项研究工作。该方案被认为是均匀带细化(UBT)方案,它是基于均匀细化技术(UTT),这是非常类似的思想,UFB方案。在该方案中,一组信道经历细分策略。该方案降低了较低优先级业务类的呼叫阻塞概率(CBP),而不会显著增加较高优先级业务类的呼叫阻塞概率。该方案的分析功能推导出一般形式,这是有用的推导任何数量的业务类。此外,数值分析的建议UBT计划表明,性能方面的呼叫阻塞概率,整体呼叫阻塞概率,和信道利用率的改善和优化相比,传统的固定保护信道计划。

英文摘要:

The increasing demand for advanced services in wireless networks raises the problem for quality of service (QoS) provisioning with proper resource management. In this research, such a provisioning technique for wireless networks is performed by Call Admission Control (CAC). A new approach in CAC named by Uniform Fractional Band (UFB) is proposed in this work for the wireless networks for providing proper priority between new calls and handover calls. This UFB scheme is basically a new style of handover priority scheme. Handover priority is provided by two stages in this scheme which help the network to utilize more resources. In addition, the handover call rate estimation and its impact on QoS provisioning is discussed widely to attain the optimum QoS in proposed handover priority scheme. In multiple services providing wireless network, excessive call blocking of lower priority traffic is very often event at very high traffic rate which is a concerning issue for QoS provisioning. To attain such QoS provisioning for multiple services, another CAC scheme is proposed in this research work. This scheme is recognized by Uniform Band Thinning (UBT) scheme which is based on uniform thinning technique (UTT) and this is quite similar idea as UFB scheme. In this scheme, a set of channels experiences the fractionizing policy. This scheme reduces the call blocking probabilities (CBP) of lower priority traffic classes without notably increasing the CBP of the higher priority traffic classes. The analytical functions of this scheme are deduced in general form which is useful to deduce for any number of traffic classes. In addition, numerical analysis of the proposed UBT scheme shows that the performances in terms of call blocking probability, overall call blocking probability, and channel utilization are improved and optimized compared to the conventional fixed guard channel scheme.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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