"call-level" and "burst-level" priorities for an effective management of multimedia services in UMTS

A. Iera, S. Marano, A. Molinaro
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引用次数: 16

Abstract

It is not an easy task in the UMTS environment to effectively design the transport and the management of traffic belonging to multimedia teleservices, due to the difficult communication requirements of such applications. It is proposed to contemporary use at the "transport" layer of the system several bearers, one for each traffic component of the multimedia service. Furthermore, a two-level (static and dynamic) priority mechanism is to be adopted by the higher protocol levels of the UMTS for the adaptation of call set-up, channel access, and admission control procedures to the nature of the multimedia services and to optimise the sharing of radio channel resources and the management of the reservation buffer. The results achieved demonstrate that the proposed mechanism shows a good performance especially during periods in which the system traffic load is high and reacts well to the worsening of the multimedia service quality, both in terms of information loss and synchronisation of its traffic components.
“呼叫级”和“突发级”优先级用于UMTS中多媒体服务的有效管理
在UMTS环境中,有效地设计属于多媒体远程业务的传输和流量管理不是一件容易的任务,因为这类应用的通信要求很困难。建议在系统的“传输”层使用几个承载,每个承载一个多媒体业务的流量组件。此外,UMTS的较高协议级别将采用两级(静态和动态)优先级机制,以便根据多媒体服务的性质调整呼叫建立、信道访问和准入控制程序,并优化无线信道资源的共享和保留缓冲区的管理。结果表明,该机制在系统流量负荷较大时表现出良好的性能,在信息丢失和流量组件的同步方面对多媒体服务质量的恶化做出了良好的反应。
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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