摘要
针对基于资源竞争与应答重传的传统自组网无法满足电力物联网需求的问题,提出了一种新型的基于蜂窝基础设施的无线自组网架构。该方案融合终端间直接通信(D2D)与自组网技术,利用集中式资源调度与终端间互相协作的优点,可以大幅缩短网络部署时间,提升网络鲁棒性。同时,考虑D2D簇内各终端的蜂窝网链路的阴影衰落具有强相关性,从而在某些场景中存在接收节点都译码失败的情况,现有重传方案效率不高。为解决此问题设计了协作簇内快速重传方案。新方案无需基站重传,而由终端间的协作传输和软信息合并完成组播重传,从而极大地提升了电力自组网的传输效率和鲁棒性。仿真结果表明,所提方案在这种场景中平均重传次数和传输时延性能都得到了改善。
A novel wireless ad hoc network architecture based on cellular infrastructure is proposed for electric internet of things to address the problem in traditional wireless Ad hoc networks.The proposed scheme combines D2D with Ad Hoc network,benefiting from the advantage of centralized resource scheduling and cooperation mechanism,the deployment time and robustness of the network can be greatly improved.At the same time,considering the strong correlation of shadow fading of cellular links in a D2D cluster,the probability of decoding failure for all receiving nodes could dramatically increases in a specific scenario.To address the problem,a fast retransmission and error correction scheme is designed.The proposed scheme exploits the soft information combine technique.Therefore,the base station does not need to retransmit the error packages.Consequently,the capacity of self-healing and robustness of electric internet of things is enhanced.Simulation results show that the proposed cellular D2D ad hoc network and retransmission scheme can achieve better performance in terms of both average number of retransmission and network delay.
作者
黄强
秦剑华
胡成博
路永玲
陶风波
王真
HUANG Qiang;QIN Jian-hua;HU Cheng-bo;LU Yong-ling;TAO Feng-bo;WANG Zhen(Research Institute, State Grid Jiangsu Electric Power Co., Ltd., Nanjing 211103, China)
出处
《哈尔滨理工大学学报》
CAS
北大核心
2021年第5期124-129,共6页
Journal of Harbin University of Science and Technology
基金
国家电网指南项目(5500-202018068A).
关键词
无线自组网
蜂窝网络
电力物联网
终端直接通信
D2D
wireless ad hoc
cellular network
electric internet of things
device to device communication
D2D
