Journal of Computer Applications ›› 2018, Vol. 38 ›› Issue (9): 2610-2615.DOI: 10.11772/j.issn.1001-9081.2018020351

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Joint power controlled resource allocation scheme for device-to-device communication in heterogeneous cellular networks

LI Zhongjie, XIE Dongpeng   

  1. Hubei Key Laboratory of Intelligent Wireless Communication(South-Central University for Nationalities), Wuhan Hubei 430074, China
  • Received:2018-02-07 Revised:2018-04-24 Online:2018-09-10 Published:2018-09-06
  • Contact: 谢东朋
  • Supported by:
    This work is partially supported by the National Natural Science Foundation of China (61379028, 61671483), the Natural Science Foundation of Hubei Province (2016CFA089).

异构蜂窝网络中联合功率控制的终端直通通信资源分配

李中捷, 谢东朋   

  1. 智能无线通信湖北省重点实验室(中南民族大学), 武汉 430074
  • 通讯作者: 谢东朋
  • 作者简介:李中捷(1974—),男,湖北武汉人,副教授,博士,主要研究方向:异构蜂窝网络、毫米波通信;谢东朋(1991—),男,山西运城人,硕士研究生,主要研究方向:终端直通通信。
  • 基金资助:
    国家自然科学基金资助项目(61379028,61671483);湖北省自然科学基金重点资助项目(2016CFA089)。

Abstract: To solve the interference issue caused by Device-to-Device (D2D) users and small cellular users underlaying macro cellular user resources in heterogeneous cellular networks, a joint power controlled resource allocation scheme was proposed. Firstly, the optimal transmit power of each D2D user and small cell user underlaying macro-cell user channel resources was derived according to the system interference model by satisfying the user Signal to Interference and Noise Ratio (SINR) and transmit power constraints. Secondly, the user's channel selection was programmed as a two-sided matching problem between the user and the channel, and a stable matching solution was obtained by using the Gale-Shapley algorithm. Finally, the matching solution was taken as the initial condition, and the allocation scheme was further optimized by the exchange search algorithm. The simulation results show that the system total capacity and energy efficiency of the proposed scheme are 93.62% and 92.14% of the optimal solution. Compared with stochastic resource allocation scheme, the allocation scheme without power control and exchange search, and the allocation scheme with power control without exchange search, the system capacity averagely increases 48.29%, 15.97% and 4.8% respectively, and the system energy efficiency averagely increases 62.72%, 44.48% and 4.45% respectively. The proposed scheme can achieve approximately optimal system total capacity and effectively improves frequency utilization and energy efficiency.

Key words: Device-to-Device (D2D) communication, Gale-Shapley algorithm, heterogeneous cellular network, resource allocation, system capacity

摘要: 针对异构蜂窝网络中终端直通(D2D)用户和小蜂窝用户复用宏蜂窝用户资源产生的干扰问题,提出一种联合功率控制的资源分配方案。首先,在满足用户信号干扰噪声比(SINR)和发射功率约束条件的前提下,根据系统干扰模型推导出每个D2D用户和小蜂窝用户复用宏蜂窝用户信道资源时的最优发射功率;其次,将用户的信道选择规划成用户和信道之间的双边匹配问题,采用延迟接受(Gale-Shapley)算法得到一个稳定的匹配解;最后,以所得的匹配解为初始条件,通过交换搜索算法进一步优化分配方案。仿真结果表明,该方案的系统总容量和能量效率分别是最优解的93.62%和92.14%,与随机资源分配方案、无功率控制和交换搜索的分配方案,以及有功率控制无交换搜索的分配方案相比,系统容量平均增幅分别为48.29%、15.97%和4.8%,系统能量效率平均增幅分别为62.72%、44.48%和4.45%。该方案能够达到近似最优的系统总容量,有效提高频率利用率和能量效率。

关键词: 终端直通通信, 延迟接受算法, 异构蜂窝网络, 资源分配, 系统容量

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