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首页> 外文会议>International Conference on Ad-Hoc, Mobile, and Wireless Networks(ADHOC-NOW 2006); 20060817-19; Ottawa(CA) >Performance Modeling of a Bottleneck Node in an IEEE 802.11 Ad-Hoc Network
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Performance Modeling of a Bottleneck Node in an IEEE 802.11 Ad-Hoc Network

机译：IEEE 802.11 Ad-Hoc网络中瓶颈节点的性能建模

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摘要

The IEEE 802.11 MAC-protocol, often used in ad-hoc networks, has the tendency to share the capacity equally amongst the active nodes, irrespective of their loads. An inherent drawback of this fair-sharing policy is that a node that serves as a relay-node for multiple flows is likely to become a bottleneck. This paper proposes a flow-level performance model of such a bottleneck node using fluid-flow analysis. Assuming Poisson initiations of new flow transfers at the bottleneck node, we obtain insightful, robust, and explicit expressions for characteristics related to the overall flow transfer time, the buffer occupancy, and the packet delay at the bottleneck node. The analysis is enabled by a translation of the behavior of the bottleneck node and the source nodes in terms of an M/G/1 queueing model. We conclude the paper by an assessment of the impact of alternative capacity sharing amongst source nodes and the bottleneck in order to improve the performance of the bottleneck.
机译：通常在自组织网络中使用的IEEE 802.11 MAC协议趋向于在活动节点之间平均分配容量，而不管它们的负载如何。这种公平共享策略的固有缺点是，充当多个流的中继节点的节点可能会成为瓶颈。本文利用流体流动分析提出了这样一个瓶颈节点的流动水平性能模型。假设在瓶颈节点处出现新的流传输的泊松引发，我们将获得与整体流传输时间，缓冲区占用率和瓶颈节点处的数据包延迟相关的特性的有见地，鲁棒和明确的表达式。通过根据M / G / 1排队模型转换瓶颈节点和源节点的行为来启用分析。我们通过评估源节点和瓶颈之间替代容量共享的影响来评估本文，以提高瓶颈的性能。

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