Hybrid Distributed Mobility Management for next-generation wireless networks
Hybrid Distributed Mobility Management for next-generation wireless networks
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DOI：
10.1109/nof.2014.7119764
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发表时间：
2014-12
期刊：
影响因子：
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通讯作者：
Giorgos Chochlidakis;V. Friderikos
中科院分区：
文献类型：
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作者：
Giorgos Chochlidakis;V. Friderikos
新兴和未来无线网络的主要挑战之一将是支持无缝分布式 IP 移动管理以支持大量不同的应用。本文提出了提供高效集中式移动代理（MA）部署的优化问题，并为分布式移动管理（DMM）方案开发了现实模型。随后根据各种关键特性（例如路由成本、延迟和拓扑依赖性）对它们进行比较。然后，提出了一种创新的混合分布式移动管理（HDMM）方案，与完全DMM方案相比，该方案在延迟敏感流的切换支持方面提供了改进的网络性能，其性能可能强烈依赖于拓扑。所提出的方案结合了集中式和分布式移动性支持，具体取决于网络的拓扑特征。大量的数值研究揭示了在不同网络情况下 DMM 方案相对于集中式方案的优势，并详细说明了未来网络倾向于分散移动管理功能的原因。仿真结果还表明，所提出的 HDMM 方案可以显着提高网络性能和最终用户所实现的 QoS，从而为延迟不容忍的 Over-the-Top 服务（例如 VoIP）提供无缝移动支持。
One of key challenges for emerging and future wireless networks will be the support of seamless distributed IP mobility management to support a plethora of different applications. In this paper, an optimization problem for provisioning efficient centralized Mobility Agents (MAs) deployment is formulated, as well as a realistic model is developed for the Distributed Mobility Management (DMM) scheme. These are subsequently compared in terms of various key characteristics, such as routing cost, delay and topology dependence. Then, an innovative Hybrid Distributed Mobility Management (HDMM) scheme is presented that provides improved network performance in terms of handover support for delay sensitive flows, compared to fully DMM schemes, which their performance can be strongly topology-dependent. The proposed scheme combines the centralized and distributed mobility support, depending on the network's topology characteristics. A wide set of numerical investigations reveal the advantages of the DMM scheme over the centralized scheme for different network cases and detail the reasons why future networks tend to decentralize mobility management functionalities. Simulation results, also, show that the proposed HDMM scheme can significantly improve the network's performance and the achieved QoS of the end-users, allowing seamless mobility support for delay intolerant over-the-top services (e.g. VoIP).