Millimeter-Wave V2V Communications: Distributed Association and Beam Alignment
Millimeter-Wave V2V Communications: Distributed Association and Beam Alignment
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DOI：
10.1109/jsac.2017.2719998
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发表时间：
2017-09-01
影响因子：
16.4
通讯作者：
Bennis, Mehdi
中科院分区：
文献类型：
--
作者：
Perfecto, Cristina;Del Ser, Javier;Bennis, Mehdi
最近，毫米波（mmWave）频带已经被假定为适应车辆通信中预见的极端带宽需求的手段，这是由于将传感数据传播到附近的车辆以增强环境意识和提高安全水平。然而，文献是特别稀缺方面的原则性资源分配方案，处理具有挑战性的无线电条件所带来的高流动性的车辆场景。在本文中，我们提出了一种新的框架，融合了匹配理论和群体智能，动态和有效地配对车辆和优化发射和接收波束宽度。这通过在建立车辆到车辆（V2 V）链路时联合考虑信道状态信息和队列状态信息来完成。为了验证所提出的框架，模拟结果和讨论，在吞吐量性能以及延迟/可靠性的权衡所提出的方法进行评估，并与最近提出的几个基准方法在文献中进行比较。本文获得的结果显示，在超密集车辆场景中，与基线相比，V2 V链路活动量增加了50%，可靠性和延迟性能提高了25%。这些结果揭示了毫米波频段的操作限制和实际可行性，作为未来高速率V2 V通信的可行无线电接入解决方案。
Recently, millimeter-wave (mmWave) bands have been postulated as a means to accommodate the foreseen extreme bandwidth demands in vehicular communications, which result from the dissemination of sensory data to nearby vehicles for enhanced environmental awareness and improved safety level. However, the literature is particularly scarce in regards to principled resource allocation schemes that deal with the challenging radio conditions posed by the high mobility of vehicular scenarios. In this paper, we propose a novel framework that blends together matching theory and swarm intelligence to dynamically and efficiently pair vehicles and optimize both transmission and reception beamwidths. This is done by jointly considering channel state information and queue state information when establishing vehicle-to-vehicle (V2V) links. To validate the proposed framework, simulation results are presented and discussed, where the throughput performance as well as the latency/reliability tradeoffs of the proposed approach are assessed and compared with several baseline approaches recently proposed in the literature. The results obtained in this paper show performance gains of 25% in reliability and delay for ultra-dense vehicular scenarios with 50% more active V2V links than the baselines. These results shed light on the operational limits and practical feasibility of mmWave bands, as a viable radio access solution for future high-rate V2V communications.