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| A New SIP Compression Mechanism Based on SigComp in IMS |
| Lin Hui①②; Xu Li① |
| ①Department of Computer Science, Fujian Normal University, Fuzhou 350007, China;②Next Generation Network Application Technology Institute of CQUPT, Chongqing 400065, China |
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Abstract SIP is used in IMS to perform multimedia session setup and maintenance. However, it is text-based and has large messages with sizes frequently exceeding several hundred bytes during the session setup. As a result, it causes more call setup delay. Based on the SigComp, a new algorithm with improved LZW and HUFFMAN is proposed in this paper, which is named as LZW-HUFFMAN. Simulation results prove that the new algorithm can effectively reduce the message sizes and shorten the session setup delay.
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Received: 07 December 2006
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2008, Vol. 30 
