提高UMTS中SIP的性能

2008 First International Conference on Emerging Trends in Engineering and Technology Pub Date : 2008-07-16 DOI:10.1109/ICETET.2008.275

Dhananjay Kumar, S. Nithya, M. Karthik, R. Sathish, K. S. R. Nawaj

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引用次数: 0

摘要

会话设置时间是多媒体应用程序的一个关键因素。影响会话建立延迟的因素主要有SIP报文的长度、带宽和无线链路的丢包等。本文旨在降低UMTS IP多媒体子系统的会话建立延迟。我们提出了一种基于文本的缓存和空白压缩(TCCB)方法和缓存方案来压缩SIP报头。在缓存方案中，在注册过程中，移动用户的服务呼叫会话控制功能(S-CSCF)地址缓存在查询- cscf (I-CSCF)。通常，查找被呼叫移动用户的服务CSCF的地址需要300 ms，并且可以使用缓存将其最小化。通过仿真分析了SIP报头压缩和缓存方案的效果。结果表明，对于9.6 Kbps信道，可以降低25%，对于19.2 Kbps信道，可以降低19%。

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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Enhancing the Performance of SIP in UMTS

Session setup time is a critical factor for multimedia applications. Some of the factors that affect the session setup delay are length of SIP messages, bandwidth and packet loss in wireless link This paper aims at reducing the session setup delay in UMTS IP Multimedia Subsystem. We propose compression of SIP header by Text-based Compression using Cache and Blank (TCCB) approach and a caching scheme. In caching scheme, during registration, the address of serving call session control function (S-CSCF) of mobile users are cached at Interrogating-CSCF (I-CSCF). Typically, it takes 300 ms to find the address of called mobile user's Serving CSCF and it can be minimized using cache. A simulation has been carried out to analyze the effect of SIP header compression and caching scheme. The result shows that for 9.6 Kbps channel, a reduction of 25% is possible and for 19.2 Kbps channel 19% reduction can be achieved.

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来源期刊

2008 First International Conference on Emerging Trends in Engineering and Technology

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