基于网络触发的IP流移动性机制
首发时间:2013-01-07
摘要:随着无线移动通信技术的迅猛发展,异构无线网络之间的融合将成为未来移动通信发展的必然趋势。目前3GPP标准化组织在EPS中提出了多接入PDN连通性及IP流移动性的方案,使多模终端同时使用多种不同的无线接入网络路由不同的IP流成为可能。本文从网络触发流移动性的角度,设计了一种基于网络的IP流移动性触发机制,并结合网络性能以及IP流的QoS需求,提出了一种基于IP流的移动性选择算法。并且通过仿真结果验证了IP流移动性机制在实现网络负载均衡的同时,能够获得更好的用户满意度。
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Network-based IP Flow Mobility Trigger Mechanism
Abstract:With the Multi Access Packet Data Network Connectivity and IP flow mobility introduced by 3GPP, mobile devices with multiple wireless interfaces can connect to multiple access networks simultaneously, meanwhile allowing dynamic allocation of different IP flows to different access systems corresponding to their requirements. In order to enable IP flow mobility, an effective IP flow mobility trigger mechanism is indispensible. However, among the existing technical standard and current literatures in IP flow mobility, almost no research involves the trigger mechanism and decision algorithm. This paper proposes a mechanism for network-based IP flow mobility, which includes a trigger process and a network selection decision algorithm based on each IP flow. Simulation results validate the flexibility and efficiency of our proposed mechanism, which can achieve a better network load balancing as well as a higher user satisfaction.
Keywords: IP flow mobility trigger mechanism load balancing
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