异构网络环境下自适应实时多媒体的跨层体系结构

E. Piri, T. Sutinen, J. Vehkapera
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引用次数: 18

摘要

尽管有兴趣,但对包括各种访问技术和各种服务和功能在内的当今网络环境的利用仍然很少。市场上已有的多址移动设备提供了移交异构网络的能力,但到目前为止,还没有任何普遍认可的方法来有效地利用这一特性。IEEE 802.21工作组指定的媒体独立切换服务标准有望为异构切换建立基础。虽然IEEE 802.21的用途也超出了异构交换,但它的能力并不能满足自适应多媒体传输的所有要求。例如,上层事件和端到端流量控制通信不在IEEE 802.21的范围内。在本研究中,我们为自适应多媒体引入了一种信息服务体系结构,它能够在本地和网络实体之间收集和传播来自协议栈不同层的事件和信息,而不管它们在网络中的位置如何。我们的架构在IEEE 802.21服务之上提出了一个触发引擎,以引入上层事件、事件分发的灵活性和端到端基于事件的自适应多媒体传输信令。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Cross-layer architecture for adaptive real-time multimedia in heterogeneous network environment
Despite the interest, the utilization of today's networking environment including a variety of access technologies and various services and capabilities is still minimal. Multiaccess mobile devices already on the market provide a capability to hand over the heterogeneous networks but so far there has not been any commonly approved way to efficiently capitalize on this feature. Media Independent Handover Services standard specified by the IEEE 802.21 working group is expected to establish the basis for heterogeneous handovers. Although IEEE 802.21 has usage also beyond heterogeneous handovers, its capabilities do not fulfill all the requirements of adaptive multimedia transmission. For example, upper layer events and end-to-end traffic control communication are outside the scope of IEEE 802.21. In this study, we introduce an information service architecture for adaptive multimedia which enables to collect and disseminate events and information from the different layers of the protocol stack locally and also between network entities regardless of their location in the network. Our architecture presents a Triggering Engine on top of the IEEE 802.21 services in order to introduce upper layer events, flexibility to event distribution, and end-to-end event based signaling to adaptive multimedia transmission.
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