On frame-based scheduling for directional mmWave WPANs
On frame-based scheduling for directional mmWave WPANs
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DOI：
10.1109/infcom.2012.6195598
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发表时间：
2012-03
期刊：
影响因子：
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通讯作者：
I. Son;S. Mao;M. Gong;Yihan Li
中科院分区：
文献类型：
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作者：
I. Son;S. Mao;M. Gong;Yihan Li
60GHz频带中的毫米波（mmWave）通信可以为新兴的带宽密集型应用提供多千兆比特速率，并且因此最近获得了相当大的兴趣。在本文中，我们研究了毫米波无线个域网（WPAN）中的高效调度问题。我们开发了一种基于帧的调度定向MAC协议，称为FDMAC，以实现利用无冲突并发传输，充分利用毫米波WPAN中的空间重用的目标。FDMAC的高效率是通过分摊连续多个并发、连续传输的调度开销来实现的。FDMAC的核心是一个基于图着色的调度算法，称为贪婪着色（GC）算法，它可以计算出接近最优的调度总的传输时间与低复杂度。建议FDMAC的分析和评估下，各种流量模型和模式。其上级性能得到了广泛的仿真验证。
Millimeter wave (mmWave) communications in the 60 GHz band can provide multi-gigabit rates for emerging bandwidth-intensive applications, and has thus gained considerable interest recently. In this paper, we investigate the problem of efficient scheduling in mmWave wireless personal area networks (WPAN). We develop a frame-based scheduling directional MAC protocol, termed FDMAC, to achieve the goal of leveraging collision-free concurrent transmissions to fully exploit spatial reuse in mmWave WPANs. The high efficiency of FDMAC is achieved by amortizing the scheduling overhead over multiple concurrent, back-to-back transmissions in a row. The core of FDMAC is a graph coloring-based scheduling algorithm, termed greedy coloring (GC) algorithm, that can compute near-optimal schedules with respect to the total transmission time with low complexity. The proposed FDMAC is analyzed and evaluated under various traffic models and patterns. Its superior performance is validated with extensive simulations.