| 摘要: |
| 针对在传输信道带宽有限和传输误码率高的蜂窝移动通信系统中,传输基于IP包交换的话音等实时业务时所面临的协议报头开销大、有用包被丢弃等问题,提出一种ROHC/UDP Lite机制,将ROHC报头压缩算法和UDP Lite传输协议有机结合,以解决上述问题.给出了实验模型,分析了实验结果,表明未来的全IP蜂窝移动通信系统采用此机制,能够高效传输基于IP包交换的话音业务. |
| 关键词: 蜂窝链路 实时IP业务 ROHC UDP Lite |
| DOI： |
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| 基金项目:Supported by the National Natural Science Foundation of China under Grant No.60272098 (国家自然科学基金); the National High-Tech Research and Development Plan of China under Grant No.2001AA112051 (国家高技术研究发展计划(863)) |
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| A Mechanism to Efficiently Transport Wireless Real-Time IP Services over Cellular Links |
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WU Yi-Chuan,HUANG Kui,SUN Li-Min,WU Zhi-Mei
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| Abstract: |
| When transporting real-time IP services such as VoIP in a cellular communication system with limited channel bandwidth and high bit error rate, there exist some problems such as the relatively large overhead imposed by protocol headers and poor data discarding policies. In this paper, a new scheme, ROHC/UDP Lite, is proposed to solve these problems, which combines ROHC with UDP Lite protocol effectively. With the ROHC/UDP Lite, it is possible to efficiently transport IP-based packet-switched voice services in the future IP cellular systems. |
| Key words: cellular link real-time IP service ROHC UDP Lite |
