J4 ›› 2010, Vol. 37 ›› Issue (1): 73-79.doi: 10.3969/j.issn.1001-2400.2010.01.013

• 研究论文 • 上一篇    下一篇

一种新型动态协同节点选择策略

张琰;盛敏;李建东;田野;姚俊良   

  1. (西安电子科技大学 综合业务网理论及关键技术国家重点实验室,陕西 西安  710071)
  • 收稿日期:2009-01-07 出版日期:2010-02-20 发布日期:2010-03-29
  • 通讯作者: 张琰
  • 作者简介:张琰(1983-),男,西安电子科技大学博士研究生,E-mail: yzhang@pcn.xidian.edu.cn.
  • 基金资助:

    国家杰出青年科学基金资助项目(60725105);国家重点基础研究发展计划(973计划)资助项目(2009CB320404);长江学者和创新团队发展计划资助项目(IRT0852); 863计划课题资助项目(2007AA01Z217);国家自然科学基金资助项目(60972048);国家重点实验室专项基金资助项目(ISN01080301);教育部新世纪优秀人才支持计划资助项目;高等学校创新引智计划资助项目(B08038);教育部科学技术研究重点项目资助项目(107103)

Novel strategy for dynamic partner choice

ZHANG Yan;SHENG Min;LI Jian-dong;TIAN Ye;YAO Jun-liang   

  1. (State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an  710071, China)
  • Received:2009-01-07 Online:2010-02-20 Published:2010-03-29
  • Contact: ZHANG Yan

摘要:

针对编码协同网络中的协同节点选择问题,提出了一种速率自适应协同与动态最大化网络生存期相结合的协同节点选择算法(RAC-DPLM).该算法联合考虑了业务期望的传输速率、信道状态信息(CSI)以及剩余能量信息(RSI)对网络生存期进行优化.通过将非线性优化问题转化为线性规划问题,不仅降低了算法的复杂度,而且达到对网络资源的动态分配,进而为不同的业务速率提供QoS保证,并有效地延长了网络生存期.在不同参数下的仿真结果表明: 相对于固定协同节点选择算法,该算法在保证业务QoS的前提下,将网络生存期延长了4~6倍.

关键词: 编码协同, 节点选择, 资源分配, 网络生存期, 服务质量

Abstract:

Partner choice is a basic problem in a coded cooperative network. In this paper, a novel partner choice algorithm (Rate Adaptation Cooperation-Dynamic Protocol for Lifetime Maximization——RAC-DPLM) is proposed, which can adapt to the transmission rate and maximize network lifetime efficiently. By considering the expected traffic transmission rate, channel state information (CSI) and residual energy information (REI) together, our scheme aims at optimizing the network lifetime. Furthermore, the complexity of our scheme is reduced by converting the nonlinear program into a linear program. Our scheme is able to allocate the network resource dynamically and guarantee the QoS for different traffic rates, which contributes to the extension of the network lifetime. Simulation results show that the network lifetime is prolonged about 4~6 times compared with the fixed priority selection scheme under QoS constrains.

Key words: coded cooperation, partner choice, resource allocation, network lifetime, quality of service

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