Ad Hoc网络中一种基于价格策略的协作转发方案  

A Novel Cooperative Forwarding Scheme Based on Pricing in Wireless Ad Hoc Networks

作　　者：王涛[1] 郑宝玉[1] 陈超[1] 赵贤敬[1] 

机构地区：[1]南京邮电大学信号处理与传输研究院,江苏南京210003

出　　处：《南京邮电大学学报（自然科学版）》2007年第6期57-62,共6页Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition

基　　金：国家自然科学基金(60372107);江苏省高校自然科学重大项目(06KJA51001)资助项目

摘　　要：在商用Ad Hoc网络中,对中继而言,为其他用户转发数据会带来额外的能量损耗,同时也会使用户自身的数据传输产生延迟,因此,网络中便会出现一些"自私节点",不愿意为其它用户转发数据,在一定程度上影响了网络的正常运行。根据微观经济学中的博弈理论,给出了一种基于价格的协作转发方案,综合考虑网络收益和用户效用,由源节点决定补偿价格,并对中继进行价格补偿,来激励其转发数据。仿真结果表明,价格机制不仅可以激励转发,增加网络收益,而且改善了用户效用,特别是中继的效用。In commercial Ad Hoc networks, both a real cost of extra energy expenditure and an opportunity cost of possible transmission delay are induced by forwarding for other nodes. Therefore,a node may not be a volunteer to forward data for others, which is called ＂selfish node＂. In this paper, a pricing scheme is proposed to stimulate the relay to forward by reimbursing based on game-theoretic power control. Under this scheme, the network revenue and node utility are optimized jointly. Numerical results show that, the scheme encourages the nodes to forward data to other and improves the efficiency of the networks.

关 键 词：价格机制 AD HOC网络 非合作博弈 中继转发 

分 类 号：F014.31[经济管理—政治经济学] TN911.7[电子电信—通信与信息系统]