Mobility model used for QoS management for wireless multimedia networks
Mobility model used for QoS management for wireless multimedia networks
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DOI：
10.1504/ijwmc.2007.016727
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
S. Rejeb;S. Tabbane;Z. Choukair
中科院分区：
文献类型：
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作者：
S. Rejeb;S. Tabbane;Z. Choukair
对于无线电服务，更具体地，对于多媒体服务，资源的可用性经常根据负载、用户的移动性和传输质量的变化而波动。波动是无线网络运营商在考虑用户移动性的情况下适应资源使用的主要问题。仅在新呼叫到达或切换时才进行各种类型业务的带宽分配。用户的移动性对网络的配置有重要影响。这种小区间切换修改了系统中业务的分布，并产生额外的信令负载。在这项研究中，我们考虑了规模网络中用户的移动性和四种流量模型(语音、视频、WWW和ftp)。此移动性模型允许我们在小区级别以及整个系统级别确定服务质量参数的阈值，超过该阈值可以阻止呼叫。
A radio service and more particularly for multimedia services, the availability of the resources often fluctuates, according to the load, mobility of users and variation of the transmission quality. The fluctuation is a major problem for radio network operators to adapt the use of the resources considering the mobility of the users. The allocation of the bandwidth of various types of traffic is done only at fresh call arrival or for a handover. The mobility of the users has an important influence on the configuration of the network. Such intercellular handover modifies the distribution of the traffic in the system and generates additional signalling load. In this study, we consider the mobility of the users in the dimensioning network and four traffic models (voice, video, www and ftp). This mobility model allows us to determine at the cell level as well as at the entire system level, for QoS parameters, threshold values beyond which a call can be blocked.