无人机辅助车联网环境下干扰感知的节点接入机制

doi:10.11959/j.issn.1000-436x.2019081

通信学报 ›› 2019, Vol. 40 ›› Issue (6): 90-101.doi: 10.11959/j.issn.1000-436x.2019081

无人机辅助车联网环境下干扰感知的节点接入机制

范茜莹¹,黄传河¹(),朱钧宇²,文少杰¹

¹ 武汉大学计算机学院，湖北武汉 430072
² 工业和信息化部计算机与微电子发展研究中心（中国软件评测中心），北京 100081

修回日期:2019-02-23 出版日期:2019-06-25 发布日期:2019-07-04
作者简介:范茜莹（1990– ），女，河南驻马店人，武汉大学博士生，主要研究方向为无线网络、算法设计与分析、车联网等。|黄传河（1963– ），男，湖北随州人，博士，武汉大学教授、博士生导师，主要研究方向为计算机网络（移动互联网、移动Ad Hoc网络、无线传感器网络、未来互联网）、物联网、网络安全、高性能计算等。|朱钧宇（1987– ），男，河南周口人，博士，工业和信息化部计算机与微电子发展研究中心（中国软件评测中心）工程师，主要研究方向为车联网、自动驾驶等。|文少杰（1987– ），男，河南临颍人，武汉大学博士生，主要研究方向为物联网、移动Ad Hoc网络、无人机网络等。
基金资助:
国家自然科学基金资助项目(61772385);国家自然科学基金资助项目(61373040);国家自然科学基金资助项目(61572370);“十三五”国家重点研发计划课题基金资助项目(SQ2018YFB010236-04-04)

Interference-aware node access scheme in UAV-aided VANET

FAN Xiying¹,HUANG Chuanhe¹(),ZHU Junyu²,WEN Shaojie¹

¹ School of Computer Science,Wuhan University,Wuhan 430072,China
² Research Center for Computer and Microelectronics Industry Development,MIIT(China Software Testing Center),Beijing 100081,China

Revised:2019-02-23 Online:2019-06-25 Published:2019-07-04
Supported by:
The National Natural Science Foundation of China(61772385);The National Natural Science Foundation of China(61373040);The National Natural Science Foundation of China(61572370);The National Key Research and Development Plan(SQ2018YFB010236-04-04)

摘要/Abstract

摘要：

在车联网中，链路频繁切换和信道干扰会导致传输时延增加及网络吞吐量下降。引入无人机与地面车辆进行协同通信，构建无人机辅助的空地一体化车联网，采用发送端自主决策的分布式策略，提出了一种干扰感知的节点接入机制。将节点接入问题形式化为一个与链路传输速率、链路切换次数和节点发射功率相关的多目标优化问题，利用对偶分解法将该问题分解为2个凸优化子问题：联合优化链路切换次数与链路传输速率和在保证链路可靠性的前提下优化节点发射功率。仿真实验表明了所提出节点接入机制可有效地改善数据传递率、平均端到端时延以及网络吞吐量。

关键词: 车联网, 无人机, 干扰感知, 链路切换

Abstract:

In vehicular Ad Hoc network (VANET),frequent link handovers and channel interference can lead to increased transmission delay and decreased network throughput.To address the issues,unmanned aerial vehicle (UAV) were introduced to cooperate with vehicles and construct UAV-assisted air-ground integrated VANET.An interference-aware node access scheme was proposed.The node access problem was formulated as a multi-objective optimization problem considering link transmission rate,link handovers and transmit power.Then the optimization problem was decomposed into two convex optimization sub-problems by dual decomposition method,the sub-problem jointly optimizes handovers and link transmission rate while the sub-problem optimizes the transmit power based on link reliability.Finally,simulation results show that the proposed mechanism can effectively improve data delivery ratio,average end-to-end delay and network throughput.

Key words: VANET, UAV, interference-aware, handovers

中图分类号:

TP393

范茜莹,黄传河,朱钧宇,文少杰. 无人机辅助车联网环境下干扰感知的节点接入机制[J]. 通信学报, 2019, 40(6): 90-101.

FAN Xiying,HUANG Chuanhe,ZHU Junyu,WEN Shaojie. Interference-aware node access scheme in UAV-aided VANET[J]. Journal on Communications, 2019, 40(6): 90-101.

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参数	含义
R_V	车辆通信范围
R_U	无人机通信范围
r _ij	链路ij 的传输速率
P_i	节点i发射功率
n_i	切换次数
d _ij	节点i和j之间的距离
c _ij	链路ij 的最大容量
ε	更新操作步长
γ	更新操作步长
m	调整参数
CT_ij	节点i和j的连通时间
C _i) (P	节点处发射功率产生的成本函数
C _i) (n	切换产生的成本函数
β	信干噪比阈值
α	与切换成本相关的系数
θ	与功率产生成本相关的系数

仿真参数	数值
仿真区域大小	3 km×3 km
车辆移动速度/(m.s^-1)	0~13
无人机移动速度/(m.s^-1)	0~15
节点密度/(n.km^-1)	3~10
信干噪比/dB	2~12

无人机辅助车联网环境下干扰感知的节点接入机制

Interference-aware node access scheme in UAV-aided VANET

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