Estimation of Blocking Performances in Mobile WiMAX Cellular Networks

Anindita Chhotray, H. K. Pati
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引用次数: 2

Abstract

In this paper, we have estimated new call block and handoff call drop performances in Cellular WiMAX. Call Admission Control (CAC) is the process of regulating voice communication, particularly in wireless mobile networks. Further it is a fundamental mechanism used for QoS provisioning in a network. It restricts the access to the network based on resource availability in order to prevent network congestion and service degradation for already supported users. CAC decides whether a new connection can be established or not. Permission is granted only when QoS requirement of the new incoming flow is met without degrading those of the existing flows. The IEEE802.16e standard support for handover (HO) and various services like with Unsolicited Grant Service (UGS), real-time Polling Service (rtPS), non-real-time Polling Service (nrtPS), Best-Effort (BE), and extended real time Polling Service (ertPS). The Quality-of-Service (QoS) parameters used are the new and handoff call blocking. In this paper we investigate the blocking performances of three channel assignment schemes in the context of Cellular WiMAX network. Numerical results are found including the performance of these schemes.
移动WiMAX蜂窝网络中阻塞性能的估计
在本文中,我们估计了蜂窝WiMAX的新呼叫阻塞和切换呼叫丢失性能。呼叫接纳控制(Call Admission Control, CAC)是对语音通信进行控制的过程,特别是在无线移动网络中。此外,它是用于在网络中提供QoS的基本机制。它根据资源可用性限制对网络的访问,以防止已经支持的用户出现网络拥塞和服务降级。CAC决定是否可以建立新的连接。只有在不降低现有流的QoS要求的情况下,满足新流入流的QoS要求时才授予权限。IEEE802.16e标准支持切换(HO)和各种服务,如非请求授权服务(UGS)、实时轮询服务(rtPS)、非实时轮询服务(nrtPS)、尽力而为服务(BE)和扩展实时轮询服务(ertPS)。使用的服务质量(QoS)参数是新的和切换的呼叫阻塞。本文研究了蜂窝WiMAX网络中三种信道分配方案的阻塞性能。数值结果反映了这些方案的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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