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M4: MultiMedia Mobility Manager : a seamless mobility management architecture supporting multimedia applications

机译:M4:MultiMedia Mobility Manager:支持多媒体应用程序的无缝移动性管理体系结构

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摘要

In this paper, a proof-of-concept and a software architecture, M4 (MultiMedia Mobility Manager), is presented. In short, M4 is offering seamless mobility management to multimedia appli­cations using a variety of wireless access networks. First, M4 is built on multihomed Mobile IP building on the principle of soft handovers. Second, network selection in M4 is based on a network layer metric combining round-trip times and jitter in round-trip times. Third, the end-user can enter its own preferences on network selection through a policy-based extension to the proposed network selection algorithm.The proposed architecture is evaluated in a live heterogeneous networking environment where handover performance is studied in detail. In addition, user-perceived quality of experience for Voice over IP using the M4 software architecture has been studied. Last, downloads of large amount of data using a combination of high and low capacity wireless networks in M4 were studied.Results indicate that the architecture as a whole and the proposed algorithms perform well. M4 can thus be seen as an imple­mentation of the "Always Best Connected" vision.
机译:在本文中,提出了概念验证和软件体系结构M4(MultiMedia Mobility Manager)。简而言之,M4正在使用各种无线访问网络为多媒体应用程序提供无缝的移动性管理。首先,M4建立在基于软切换原理的多宿主移动IP基础上。其次,M4中的网络选择基于网络层度量,该度量结合了往返时间和往返时间的抖动。第三,最终用户可以通过对所提出的网络选择算法进行基于策略的扩展来输入自己对网络选择的偏好。所提出的体系结构是在实时异构网络环境中评估的,该环境对切换性能进行了详细研究。此外,还研究了使用M4软件体系结构的用户感知的IP语音体验质量。最后,研究了在M4中使用高容量和低容量无线网络的组合下载大量数据的结果。结果表明,该体系结构和所提出的算法整体性能良好。因此,M4可以看作是“始终保持最佳连接”愿景的实现。

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