多运营商场景下车载通信频谱共享

Zhongjie He, Hangguan Shan, Yuanguo Bi, Z. Xiang, Zhou Su, T. Luan
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引用次数: 2

摘要

在5.9 GHz智能交通系统(ITS)频段,有两种相互竞争的标准支持车联网,即专用短程通信(DSRC)和长期演进车辆(LTE-V)。在这项工作中,我们研究了多运营商场景下车辆通信的频谱共享,其中运营商分别基于DSRC和LTE-V部署其车辆网络。特别地,我们研究了在上述场景下,车辆用户如何选择网络接入。为评估时变LTE-V和DSRC网络负载,提出了一种考虑车载用户高移动性的服务质量(QoS)评估机制。我们使用Vickrey-Clarke-Groves (VCG)反向拍卖机制,让车辆用户做出适当的访问决策。此外,为了更好地为车载用户提供频谱效率和QoS,我们提出了一种基于载波感知和自适应传输(CSAT)机制的频谱交易算法,LTE-V和DSRC可以通过该算法协商频谱共享。仿真结果验证了所提车辆用户接入方案的有效性,并展示了车辆密度和传输速率对车辆用户QoS的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Spectrum Sharing for Vehicular Communications in A Multi-operator Scenario
At 5.9 GHz intelligent transportation system (ITS) band, there are two competing standards supporting vehicular networking, namely dedicated short-range communication (DSRC) and long-term evolution-vehicle (LTE-V). In this work, we study spectrum sharing for vehicular communications in a multi-operator scenario, in which the operators deploy their vehicular networks based on DSRC and LTE-V respectively. Specially, we study how vehicular users choose network to access in the aforementioned scenario. To estimate the network load of LTE-V and that of DSRC which are time-varying, we propose a quality-of-service (QoS) assessment mechanism with the consideration of vehicular users' high mobility. We use Vickrey-Clarke-Groves (VCG) reverse auction mechanism to let vehicular users make appropriate access decisions. Moreover, to achieve better spectrum efficiency and QoS provisioning for vehicular users, we propose a spectrum transaction algorithm based on carrier sensing and adaptive transmission (CSAT) mechanism, with which LTE-V and DSRC can negotiate about spectrum sharing. Simulation results verify the effectiveness of the proposed vehicular user access scheme and show the impact of the vehicle density and transmission rate on the QoS of vehicular users.
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