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首页> 外文期刊>Circuits and Systems for Video Technology, IEEE Transactions on >QoS Support in MANETs: a Modular Architecture Based on the IEEE 802.11e Technology
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QoS Support in MANETs: a Modular Architecture Based on the IEEE 802.11e Technology

机译：MANET中的QoS支持：基于IEEE 802.11e技术的模块化体系结构

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摘要

Providing quality-of-service (QoS) in wireless ad hoc networks is an intrinsically complex task due to node mobility, distributed channel access, and fading radio signal effects. This goal can be successfully accomplished only through the cooperation of the different protocol layers involved. In this paper we propose a novel QoS architecture that is able to support applications with the bandwidth, delay, and jitter requirements in MANET environments. The proposed architecture is modular, allowing the plugging in of different protocols, which offers great flexibility. Despite its modularity, we propose optimizations based on interactions between the media access control (MAC), routing, and admission control layers which offer important performance improvements. We validate our proposal in scenarios where different network loads, node mobility degrees, and routing algorithms are tested in order to quantify the benefits offered by our QoS proposal. In particular, we have also used real H.264/AVC video traces to simulate video sources in order to measure the quality in terms of peak signal to noise ratio of the received video, so that the benefits of applying our QoS scheme to video sources can be assessed in terms of user satisfaction (from the applications perspective).
机译：由于节点移动性，分布式信道访问和无线电信号衰落，在无线自组织网络中提供服务质量（QoS）是一项本质上复杂的任务。仅通过所涉及的不同协议层之间的协作才能成功实现此目标。在本文中，我们提出了一种新颖的QoS体系结构，该体系结构能够支持MANET环境中具有带宽，延迟和抖动要求的应用程序。所提议的体系结构是模块化的，允许插入不同的协议，这提供了极大的灵活性。尽管其模块化，我们还是建议基于媒体访问控制（MAC），路由和准入控制层之间的交互进行优化，以提供重要的性能改进。我们在测试了不同网络负载，节点移动度和路由算法的方案中验证了我们的提议，以便量化QoS提议所带来的好处。特别是，我们还使用真实的H.264 / AVC视频轨迹来模拟视频源，以便根据接收视频的峰值信噪比来衡量质量，从而将QoS方案应用于视频源的好处可以根据用户满意度（从应用程序的角度）进行评估。

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