车联网中基于联盟合作博弈的带宽分享策略

Coalition Formation Games for Bandwidth Sharing in VANET

近几年来,车联网领域快速发展并引起广泛关注。在此背景下提出了一种混合Wi-Fi、WiMAX和3G/LTE的网络架构,在这种架构下,车辆可以根据自身的情况选择合适的方式接入网络。网络带宽分享采用基于联盟合作博弈的方式,车辆可以选择加入或离开合作联盟来最大化自身收益。模型从理论上证明了通过车辆间的效用分配与博弈合作,最终将形成一个纳什稳定的联盟划分并能适应车辆的动态变化。仿真结果表明,模型的算法性能接近于最优联盟分配。

There has been significant interest and development in vehicular Ad Hoc network （VANET） during the last several years. An aggregated networking architecture using Wi-Fi,WiMAX and 3G/LTE technologies was proposed. In this architecture, a proper way was chosen by vehicles to achieve low-cost network access. This model used a coalition formation game for bandwidth sharing among vehicles, where each can take an individual decision to join or leave a coalition, depending on its utility. It was showed that the vehicles could self-organize into a Nash-stable partition and adapt this partition to environmental changes. Simulation results show that, this approach works efficiently in bandwidth sharing in VANET compared to optimal partition.