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V2X通信中基于车辆分簇的资源分配机制 被引量:2
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作者 张晨璐 李佳林 +1 位作者 姜炜 刘是枭 《计算机应用与软件》 北大核心 2021年第1期128-134,共7页
基于3GPP(3rd Generation Partnership Project)R15 SA WI阶段定义的两种V2X业务模型,在无基站覆盖区域进行自主资源选择时导致的碰撞和干扰问题,提出一种基于车辆分簇的资源分配机制。对场景中的所有车辆根据其地理位置和行驶方向进行... 基于3GPP(3rd Generation Partnership Project)R15 SA WI阶段定义的两种V2X业务模型,在无基站覆盖区域进行自主资源选择时导致的碰撞和干扰问题,提出一种基于车辆分簇的资源分配机制。对场景中的所有车辆根据其地理位置和行驶方向进行分簇,根据车簇间的相对位置对所有车簇进行分组,进而划分不同的专属时隙资源;由每个簇中"头车"来担任资源协调与资源占用信息获取的角色。仿真结果表明,该机制在低时延要求场景下的性能较LTE-V2X现有自主资源选择的资源分配方式更优。 展开更多
关键词 V2X 无基站 车辆分簇 专属资源 资源分配
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Node deployment strategy optimization for wireless sensor network with mobile base station 被引量:7
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作者 龙军 桂卫华 《Journal of Central South University》 SCIE EI CAS 2012年第2期453-458,共6页
The optimization of network performance in a movement-assisted data gathering scheme was studied by analyzing the energy consumption of wireless sensor network with node uniform distribution. A theoretically analytica... The optimization of network performance in a movement-assisted data gathering scheme was studied by analyzing the energy consumption of wireless sensor network with node uniform distribution. A theoretically analytical method for avoiding energy hole was proposed. It is proved that if the densities of sensor nodes working at the same time are alternate between dormancy and work with non-uniform node distribution. The efficiency of network can increase by several times and the residual energy of network is nearly zero when the network lifetime ends. 展开更多
关键词 wireless sensor network mobile base station network optimization energy consumption balancing density ratio of sensor node network lifetime
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