协作中继和网络编码在车载网络中的应用

Employment of cooperative relaying and network coding in vehicular networks

对于出行者来说,通过路边热点来进行文件共享和内容分发以及车辆间相互通信的车载网已经成为蜂窝网络重要的互补网络。车载网络独有的特点给这些网络的内容分发和连接性等带来了挑战。提出结合协作中继和符号级网络编码来提高车载网络的连接性和信息传输的效率和鲁棒性。通过仿真评估了所提出机制的性能,证明了该机制可以提高网络的误码率和吞吐量。

For vehicle users,the file sharing and content distribution through roadside APs as well as the vehicular ad hoc networks has been an important complement to that through cellular networks.However,the unique characteristics of vehicular networks such as the fast changing topology and the lossy nature of the links have brought many challenges to the network connectivity and capacity.In this paper,we propose to combining cooperative relaying and symbol-level network coding to improve the network connectivity and data transmission efficiency and robustness.In order to validate our mechanism,we have implemented extensive simulations,of which the results demonstrate its effectiveness in terms of Bit Error Rate and throughput.