一种新的基于多节点网络编码的无线广播重传算法  

New Wireless Broadcasting Retransmission Algorithm Based on Multiple Nodes Network Coding

作　　者：王兴亮 卢选民[1] 冯莎[1] 刘亚亮[1] 

机构地区：[1]西北工业大学电子信息学院,陕西西安710129

出　　处：《现代电子技术》2011年第17期51-53,56,共4页Modern Electronics Technique

基　　金：2010西北工业大学研究生创业种子基金项目支持(Z2011098);2010年国家科技重大专项项目的支持(2010ZX03003-003)

摘　　要：提出了一种基于网络编码的无线网络广播重传算法。该算法按照包丢失分布概率的特点生成新的重传序列,采用多节点的网络编码方法进行丢失包组合实现重传。通过数学分析和仿真证明,该算法能保证接收节点的编码可解性,同时重传次数可达到局部最优性;与传统重传方法相比,该算法可以有效地减少信息包的平均传输次数,从而提高传输效率。A wireless network broadcasting retransmission algorithm based on network coding is put forward in this paper. In accordance with the characteristic of packet loss distribution probability, it generates the new retransmission sequences, accomplishes the combination of lost packages, and then realizes the wireless network broadcasting retransmission by means of the multi-node network coding method. The mathematics analysis and simulation results prove that the algorithm can ensure the solvability of the codes at receiving nodes, meanwhile the retransmission frequency can reach the local optimality. Compared with the traditional retransmission method, this algorithm can reduce the average transmission number of message packages more effectively. Therefore, the transmission efficiency was improved.

关 键 词：无线网络 网络编码 广播重传机制 广播重传算法 

分 类 号：TN911-34[电子电信—通信与信息系统]