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RESEARCH_ON_END-TO-END_HANDOFF

于 2010-04-28 发布文件大小:4406KB

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说明：本文在研究IEEE802.16e协议和SIP协议的基础上，提出了利用 SIP解决IEEE802.16接入网络中端到端切换的新方案。该方案采用跨层切换的设计思想，联合MAC层和应用层SIP协议，在底层链路切换的同时，完成应用层会话的修改，加快了切换过程，减少了切换时延，提高了切换成功率。本文基于NS2仿真平台，完成了相应的仿真平台搭建过程，实现了SIP协议模块和WiMAX协议模块的融合，扩展了SIP 协议模块的部分消息，最终在基于SIP协议模块和WiMAX协议的统一 NS2平台上实现了基于WiMAX接入、支持SIP扩展功能的SIP会话建立和修改过程。 ( On the basis of study of WiMfAX and SIP, a new mechanism using SIP to achieve end-to-end handoff under IEEE802.16e access networks is Ob proposed handoffs, in this thesis. The mechanism adopts a cross-layer design which means that the l}iIAC layer handoff procedure can interleaved with that of the application layer. During the handoff at link )

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