电信科学 ›› 2016, Vol. 32 ›› Issue (3): 105-112.doi: 10.11959/j.issn.1000-0801.2016043

• 研究与开发 • 上一篇    下一篇

蜂窝通信与设备直通通信混合网络下的资源优化

赵季红1,2,董姣姣1,唐睿2,曲桦2   

  1. 1 西安邮电大学通信与信息工程学院,陕西 西安 710061
    2 西安交通大学电子信息工程学院,陕西 西安 710049
  • 出版日期:2016-03-20 发布日期:2016-03-28

Resource optimization for device-to-device communication underlaying cellular network

Jihong ZHAO1,2,Jiaojiao DONG1,Rui TANG2,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:2016-03-20 Published:2016-03-28

摘要:

设备直通通信通过复用传统蜂窝网络的频带资源,能够充分利用邻近通信对之间良好的信道环境,大幅度降低移动终端能耗,提升系统吞吐量,增加接入链路数目,改善用户的服务质量(quality of service,QoS)。但是频带复用会带来同频干扰,因此资源分配机制的设计受到了广泛的重视。优化了能耗、系统频带利用率、能效(频带利用率与终端总能耗的比值)、接入链路数目和最差接入用户性能这 5 个系统核心性能指标,与此同时保证所有接入链路的QoS 需求。通过仿真,验证了所提算法性能并观察分析了各性能指标优化间的折中关系。

关键词: 设备直通通信, 节能优化, 系统吞吐量, 用户公平性, 性能折中, 资源分配

Abstract:

Device-to-device(D2D)communication underlaying cellular network can greatly reduce the energy consumption for mobile terminals,enhance the aggregate throughput for the system and improve quality-of-service (QoS)experience for individual users by utilizing the proximity gain residing in local communicating pairs.However,intra-cell orthogonality is impaired due to spectral sharing and the design of radio resource allocation mechanism is addressed.Energy consumption,spectral efficiency,energy efficiency,the number of admitted D2D links and the worst individual data rate were optimized and QoS requirement incorporating of all links were guaranteed.With the help of simulations,the efficiency of the proposed mechanism was verified and the trade-offs between different optimization targets was observed.

Key words: D2D communication, energy conservation, system throughput, user fairness, performance trade-off, resource allocation

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