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首页> 外文会议>International Conference on ITS(Intelligent Transport Systems Standardization) Telecommunications Proceedings(ITST2006); 20060621-23; Chengdu(CN) >The MAC Mechanism with QoS Provision Based on Stream-Maintenance in Ad Hoc Networks
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The MAC Mechanism with QoS Provision Based on Stream-Maintenance in Ad Hoc Networks

机译：Ad Hoc网络中基于流维护的具有QoS提供的MAC机制。

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Because the signal of different nodes interferes with each other, the collision happens frequently in Ad Hoc networks. If only adopting contention-based MAC protocol, it is hard to guarantee Quality of Service (QoS) of multi-media services such as voice and video in ad hoc network. A series of periodical realtime service packages from the same source node can be regarded as a real-time data stream. By adopting the resource reserve mechanism to improve the IEEE 802.11 DCF, a new type of MAC mechanism including MAC-FM and MAC-FM (E) is brought forward in this paper. MAC-FM and MAC-FM (E) reserve dynamically the time slots for the real-time data stream in distributed mode to avoid the collision of real-time service packages. In addition, the networks performance including delay and throughput is analyzed in theory and validated via simulation. The result indicates that MAC-FM and MAC-FM (E) can decrease the delay greatly and increase the throughput of Ad Hoc networks.
机译：由于不同节点的信号相互干扰，因此冲突在Ad Hoc网络中经常发生。如果仅采用基于竞争的MAC协议，则很难保证ad hoc网络中语音和视频等多媒体服务的服务质量（QoS）。来自同一源节点的一系列定期实时服务包可被视为实时数据流。通过采用资源保留机制来改进IEEE 802.11 DCF，本文提出了一种新的MAC机制，包括MAC-FM和MAC-FM（E）。 MAC-FM和MAC-FM（E）为分布式模式下的实时数据流动态保留时隙，以避免实时服务包的冲突。此外，对网络性能（包括时延和吞吐量）进行了理论分析，并通过仿真进行了验证。结果表明，MAC-FM和MAC-FM（E）可以大大减少延迟并增加Ad Hoc网络的吞吐量。

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