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    彭 鑫, 王 东, 李仁发, 曾凡仔, 付 彬. 多接口车载自组织网络频谱分配算法研究[J]. 计算机研究与发展, 2013, 50(4): 750-757.
    引用本文: 彭 鑫, 王 东, 李仁发, 曾凡仔, 付 彬. 多接口车载自组织网络频谱分配算法研究[J]. 计算机研究与发展, 2013, 50(4): 750-757.
    Peng Xin, Wang Dong, Li Renfa, Zeng Fanzi, Fu Bin. An Algorithm for Spectrum Allocation in Multi-Interface Vehicular Ad Hoc Networks[J]. Journal of Computer Research and Development, 2013, 50(4): 750-757.
    Citation: Peng Xin, Wang Dong, Li Renfa, Zeng Fanzi, Fu Bin. An Algorithm for Spectrum Allocation in Multi-Interface Vehicular Ad Hoc Networks[J]. Journal of Computer Research and Development, 2013, 50(4): 750-757.

    多接口车载自组织网络频谱分配算法研究

    An Algorithm for Spectrum Allocation in Multi-Interface Vehicular Ad Hoc Networks

    • 摘要: 如何提升链路的并行传输能力是车载自组网面临的重要问题.如果在车辆上装配多个无线接口,并且分别调制到不同的正交信道可以有效增强链路的并行传输能力,从而提升网络吞吐率.针对拓扑变化对多接口车载自组网动态频谱分配带来的影响,提出了一种多接口车载自组网动态频谱分配算法.算法根据车辆的运动速度进行分簇,然后在簇头间通信中采用离线频谱分配策略,从而避免了网络的拓扑变化对频谱分配造成的影响.而簇内车辆具有相同的运动速度,所以具有稳定的簇内拓扑结构,有利于频谱分配算法的应用.仿真分析表明,提出的算法适用于多接口车载自组网,在动态拓扑环境下表现出了良好的性能.

       

      Abstract: Elevating the capability of simultaneous transmitting is one of the key issues in VANETs studies. If equipped with multiple wireless interfaces, each vehicle can simultaneously transmit over different channels, which has positive impact on the extension of communication window and the promotion of network throughput. Challenging research issues in multi-interface vehicular ad hoc networks are the spectrum allocation and the routing problems. Considering that the negative effects of the topological dynamic on spectrum allocation in VANETs, an algorithm of spectrum allocation based on clustering is presented, which could be utilized in multi-interface VANETs. Firstly, the network is clustered according to the velocity of vehicles. And then an off-line spectrum allocation scheme is applied to the inter-cluster links, thus eliminating the impact of the topological dynamic. Considering that the velocities of the vehicles from same cluster are similar, the topology of intra-cluster is stable. It is helpful to the application of dynamic spectrum allocation technology. Simulation results demonstrate that our method can effectively promote network throughput and perform well on dynamic topology.

       

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