一种路-车通信中的喷泉协作节能传输机制  

A cooperative energy-saving transmission mechanism based on fountain codes in road-to-vehicle communications

作　　者：雷维嘉[1] 陈佳[1] 李世成[1] 

机构地区：[1]重庆邮电大学移动通信技术重庆市重点实验室,重庆400065

出　　处：《重庆邮电大学学报（自然科学版）》2012年第5期559-565,共7页Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基　　金：国家自然科学基金(61271259);重庆市自然科学基金(CTSC2011jjA40006;CSTC2010BB2415);重庆市教委科学技术研究项目(KJ120501;KJ110530;KJ120502);重庆邮电大学博士启动基金(A2011-03);重庆市教委优秀成果转化项目(Kjzh11206)~~

摘　　要：为了减少路车间通信(road to vehicle communications,RVC)中路边设施的能量消耗,提出一种将由一个路边设施的覆盖区域改为由多个较小功率的路边设施来覆盖,而在路边设施之间通过协作来共同完成向车辆的数据传输。路边设施间的协作传输通过对数据进行喷泉编码、利用喷泉编码的信息累积特性来实现。理论分析和仿真结果表明,采用喷泉协作传输机制,在保证QoS的情况下,路边设施的发送功率有较大的下降。In order to reduce the energy consumption of the roadside infrastructures,the authors will divide the big coverage area of a roadside infrastructure into the small coverage areas of many roadside infrastructures.Meanwhile,the roadside infrastructures commonly finish transmitting data to vehicles by cooperating.The cooperative transmission among the roadside infrastructures is implemented by the fountain codes and exploiting its information accumulation feature.When utilizing the cooperative transmission mechanism based on fountain codes,the theoretical analyses and simulation results show that the transmission power of the roadside infrastructures has a bigger decrease under guaranteeing the quality of the service.

关 键 词：车辆通信 喷泉码 节能传输 中断概率 

分 类 号：TN929.54[电子电信—通信与信息系统]