Coalition Formation Games for Distributed Cooperation Among Roadside Units in Vehicular Networks
Coalition Formation Games for Distributed Cooperation Among Roadside Units in Vehicular Networks
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DOI：
10.1109/jsac.2011.110106
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发表时间：
2011-01-01
影响因子：
16.4
通讯作者：
Hossain, Ekram
中科院分区：
文献类型：
--
作者：
Saad, Walid;Han, Zhu;Hossain, Ekram
车辆到路边（V2R）通信使车辆网络能够支持用于提高道路运输效率的广泛应用。虽然现有的工作集中在车辆和路边单元（RSU）之间的V2R通信的非合作技术，本文研究了新的合作策略RSU之间的车辆网络。我们提出了一个方案，通过合作，RSU在车辆网络中可以协调通过V2R通信链路传输到车辆的数据的类别。该方案在利用底层内容共享的车对车通信网络的同时，提高了网络中流通的信息的多样性。我们模型的问题作为一个联盟的形成游戏与可转移的效用，我们提出了一个算法，形成联盟之间的RSU。对于联盟的形成，每个RSU可以根据其效用来决定加入或离开联盟，该效用考虑了所产生的收入和联盟协调的成本。我们表明，RSU可以自组织成一个纳什稳定的分区，并适应这种分区的环境变化。仿真结果表明，根据不同的情况下，联盟形成提出了一个性能的改善，在每个RSU的平均收益，范围在20.5%和33.2%之间，相对于非合作的情况下。
Vehicle-to-roadside (V2R) communications enable vehicular networks to support a wide range of applications for enhancing the efficiency of road transportation. While existing work focused on non-cooperative techniques for V2R communications between vehicles and roadside units (RSUs), this paper investigates novel cooperative strategies among the RSUs in a vehicular network. We propose a scheme whereby, through cooperation, the RSUs in a vehicular network can coordinate the classes of data being transmitted through V2R communication links to the vehicles. This scheme improves the diversity of the information circulating in the network while exploiting the underlying content-sharing vehicle-to-vehicle communication network. We model the problem as a coalition formation game with transferable utility and we propose an algorithm for forming coalitions among the RSUs. For coalition formation, each RSU can take an individual decision to join or leave a coalition, depending on its utility which accounts for the generated revenues and the costs for coalition coordination. We show that the RSUs can self-organize into a Nash-stable partition and adapt this partition to environmental changes. Simulation results show that, depending on different scenarios, coalition formation presents a performance improvement, in terms of the average payoff per RSU, ranging between 20.5% and 33.2%, relative to the non-cooperative case.