Minimum Number of Transmission Slots in D2D-Assisted Wireless Coded Broadcast
Minimum Number of Transmission Slots in D2D-Assisted Wireless Coded Broadcast
复制标题
D2D辅助无线编码广播中的最小传输时隙数
DOI：
10.1109/smartcomp.2017.7947022
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Liyue Zhu
中科院分区：
文献类型：
--
作者：
Cheng Zhan;Zhe Wen;Liyue Zhu
向多个用户广播数据在无线应用中被广泛使用。我们考虑一群移动用户，他们彼此接近，对相同的视频内容感兴趣。网络编码广播和协同编码通信分别可以提高无线网络的传输效率和吞吐量。本文研究了具有多接口用户的d2d辅助无线网络编码广播问题，以减少传输时隙的数量。为了获得所有需要的数据包，用户可以同时根据蜂窝链路和本地合作D2D链路接收编码后的数据包。我们分析了传输槽数的下界，并用整数线性规划（ILP）表达了这个问题。我们还针对这种设置开发了启发式解决方案，仿真结果表明，我们的编码方案显著减少了传输时隙的数量。
Broadcasting data to multiple users is widely used in wireless applications. We consider a group of mobile users, within proximity of each other, who are interested in the same video content. Network coded broadcast and cooperative coded communication can improve transmission efficiency and throughput over wireless network separately. In this paper we consider the D2D-assisted wireless network coded broadcast problem for users with multiple interfaces to minimize the number of transmission slots. In order to obtain all needed packets, user can receive encoded packet according to cellular link and local cooperative D2D links simultaneously. We analyze the lower bound of number of transmission slots and formulate the problem with integer linear programming(ILP). We also develop heuristic solution for this setup, and simulation results show that our coding scheme significantly reduces the number of transmission slots.