摘要
对在D2D辅助蜂窝网络中可伸缩视频实时传输中的网络资源分配问题进行研究,提出一个功率分配与频谱共享的优化方案实现用户整体视频质量的最优化。基于可伸缩视频每层的传输速率需求进行单个蜂窝网用户及D2D用户的功率分配,得到最优视频层组合和功率分配方案;基于最大加权二部图匹配方法为D2D用户匹配适当频谱,得到整体资源最优化分配方案。实验结果表明,提案方法在保证D2D用户高接入率的前提下显著提高单个D2D复用所提供的视频质量增益。
To solve the problem of optimal resource allocation in scalable video real-time transmission in a cellular D2D collaborative network,a joint spectrum sharing and power allocation scheme was proposed to achieve the best overall video quality of users.According to the transmission rate requirements of each video layer,power allocation was performed for each single cellular user and D2D user to obtain the optimal video layer combination and power allocation scheme.The maximum weight bipartite matching method was used to match the appropriate spectrum for each D2D user.Therefore,the optimal allocation scheme of overall resources was achieved.Simulation results show that the proposed scheme can significantly improve the video quality gain that provided by proper single frequency band multiplexing while ensuring a high access rate of D2D users.
作者
付明凯
熊炫睿
张媛
刘敏
陈高升
程占伟
FU Ming-kai;XIONG Xuan-rui;ZHANG Yuan;LIU Min;CHEN Gao-sheng;CHENG Zhan-wei(School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;School of Computer and Internet of Things,Chongqing Institute of Engineering,Chongqing 400056,China)
出处
《计算机工程与设计》
北大核心
2021年第5期1208-1214,共7页
Computer Engineering and Design
基金
重庆市基础科学与前沿技术研究专项基金项目(cstc2017jcyjAX0135)
重庆市教委科学技术研究基金项目(KJQN201801908)
重庆邮电大学科研启动基金项目(A2015-14)。
