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A QpS framework to support integrated services in multihop wireless networks with infrastructure support

机译：QpS框架通过基础结构支持来支持多跳无线网络中的集成服务

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摘要

In this paper, we consider a multihop wireless network with infrastructure support (MWNI) which can be built upon existing IEEE 802.11 based WLANs to extend the coverage and provide more flexibility to adapt to the dynamics of the network. To support integrated services in MWNI, a QoS framework is proposed to achieve the following objectives: (1) allow more real-time flows to be admitted into the network, (2) optimize the performance of best-effort traffic without losing fairness and (3) enhance QpS performance of admitted real-time traffic. There are three main components in our framework to provide corresponding solutions. First, a new QoS routing protocol that discovers global optimized topology based on the network interference modeled by flow contention graph. Second, admission control is performed at the access point (AP) so that a flow will be admitted only if the network has enough bandwidth to support its minimum bandwidth requirement. Third, a two-level hierarchical scheduling algorithm based on weighted fair queueing is implemented at the APs. The efficiency of individual component, as well as the QpS framework is evaluated through simulation studies, and the results show our proposed QoS framework is able to enhance the QpS of real-time traffic and still achieve high network utilization.
机译：在本文中，我们考虑了具有基础架构支持（MWNI）的多跳无线网络，该网络可以基于现有的基于IEEE 802.11的WLAN构建，以扩展覆盖范围并提供更大的灵活性以适应网络的动态变化。为了支持MWNI中的集成服务，提出了QoS框架以实现以下目标：（1）允许将更多实时流接纳到网络中;（2）在不损失公平性的情况下优化尽力而为流量的性能;以及（ 3）增强允许的实时流量的QpS性能。我们的框架中有三个主要组件可提供相应的解决方案。首先，一种新的QoS路由协议，该协议基于流争用图建模的网络干扰来发现全局优化拓扑。其次，准入控制是在接入点（AP）上执行的，以便仅当网络具有足够的带宽来支持其最小带宽要求时，才允许流进入。第三，在AP处实现了基于加权公平排队的两级分层调度算法。通过仿真研究评估了各个组件的效率以及QpS框架，结果表明我们提出的QoS框架能够增强实时流量的QpS并仍然实现较高的网络利用率。

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