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A Framework for Joint Scheduling and Diversity Exploitation under Physical Interference in Wireless Mesh Networks

机译:在无线网状网络中物理干扰下的联合调度和多样性开发的框架

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Recently, interest has arisen in use of realistic interference models for transmission scheduling in wireless multihop networks, particularly in mesh networks where throughput is a major concern. In this work, we use the SINR-based physical interference model and develop a uniform framework for transmission scheduling when diverse wireless resources can be exploited. The factors considered are multiple (possibly overlapped) channels, directional antennas, and transmit power control. We develop an efficient heuristic for computing a diversity exploiting schedule based on a new network saturation metric. We prove that, under uniform random node distributions, the schedule produced by our heuristic is within a poly-log factor from optimal with a probability that approaches one as network size increases. Through simulation, we demonstrate the ability of our algorithm to achieve up to a 10-fold throughput improvement with respect to networks without diversity. Our analysis also reveals a number of insights on the ability of diversity exploitation to reduce or eliminate interference.
机译:最近,利用现实干扰模型来实现利益用于在无线多彩网网络中传输调度,特别是在吞吐量是主要问题的网状网络中。在这项工作中,我们使用基于SINR的物理干扰模型,并在可以利用不同的无线资源时开发用于传输调度的统一框架。所考虑的因素是多个(可能重叠的)信道,定向天线和发射功率控制。基于新的网络饱和度量,我们开发了一个高效的启发式,用于计算多样性利用计划。我们证明,在均匀的随机节点分布下,我们启发式产生的时间表是从最佳方式的多对数因子,与网络大小增加一个概率。通过仿真,我们展示了我们算法在没有多样性的网络上实现了高达10倍的吞吐量的能力。我们的分析还揭示了对减少或消除干扰的多样性利用能力的见解。

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