电信科学 ›› 2015, Vol. 31 ›› Issue (4): 71-76.doi: 10.11959/j.issn.1000-0801.2015109

• 研究与开发 • 上一篇    下一篇

移动中继多播场景下的节能优化

赵季红1,2,王元1,唐睿2,张振伟2,曲桦2   

  1. 1 西安邮电大学通信与信息工程学院 西安 710061
    2 西安交通大学电子与信息工程学院 西安 710049
  • 出版日期:2015-04-15 发布日期:2015-04-15
  • 基金资助:
    国家自然科学基金资助项目;新一代宽带无线移动通信”国家重大专项基金资助项目

Energy Saving Optimization for Mobile Relays in Multicast Transmission Underlying Cellular Network

Jihong Zhao1,2,Yuan Wang1,Rui Tang2,Zhenwei Zhang2,Hua Qu2   

  1. 1 School of Telecommunication and Information Engineering,Xi'an University of Posts ＆ Telecommunications,Xi'an 710061,China
    2 School of Electronics and Information Engineering,Xi'an Jiaotong University,Xi'an 710049,China
  • Online:2015-04-15 Published:2015-04-15
  • Supported by:
    The National Natural Science Foundation of China;A New Generation of Broadband Wireless Mobile Communication National Science and Technology Major Projects

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摘要：

设备间通信（D2D通信）通过复用蜂窝通信的频带资源，可以使近距离的用户直接通信，而无需通过基站进行中继。它的引入可以提升用户的服务质量，降低终端能耗，拓展小区的覆盖范围。特别的，在CDN场景中，可通过移动中继向请求相同业务内容的用户进行D2D广播传输。但是，在上述场景中，需考虑到移动终端（MT）的能耗和与蜂窝用户之间的同频干扰问题。基于此，提出了一种基于粒子群优化（PSO）算法的联合中继节点选择和功率控制机制来最小化移动中继的总能耗并同时保证两类用户的服务质量（QoS）需求得到满足。通过仿真，此方案效果得到了验证。

关键词: 移动中继, D2D多播, 节能, 服务质量, 中继节点选择, 功率控制, 粒子群优化

Abstract:

Device-to-device（D2D）communication enables direct data transmission between mobile terminals（MT）in proximity by reusing the frequency of traditional cellular network.It is capable to improve individual quality of service（QoS）,reduce MT's energy consumption and expand cell coverage.Particularly,when multiple MT request the same content of service at cell edge,some MT in their vicinity could relay the data to them by means of D2D multicast transmission.However,due to the limited battery lifetime of MT and spectral reusing between D2D and cellular communications,relay node selection and power control are two key techniques needed to be addressed.A particle swarm optimization based scheme to minimize the sum power consumption of mobile relays while guarantee the individual QoS requirement by incorporating both relay node selection and power control was proposed.The efficacy of our scheme was extensively verified through numerical results.

Key words: mobile relay, D2D multicast, energy saving, quality of service, relay node selection, power contro1, particle swarm optimization

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