计算机与现代化

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Femtocell网络中基于保证公平性的频谱资源分配算法#br#

  

  1. 1.国电南瑞科技股份有限公司轨道交通技术分公司,江苏南京210032;
     2.江苏省医疗器械检验所机电科,江苏南京210022
  • 收稿日期:2014-06-10 出版日期:2014-10-10 发布日期:2014-11-04
  • 作者简介:陆相成(1989),男,江苏南京人,国电南瑞科技股份有限公司轨道交通技术分公司工程师,硕士,研究方向:计算机应用技术,通信技术; 张莉(1989),女,江苏南京人,江苏省医疗器械检验所机电科工程师,硕士,研究方向:计算机应用技术,通信技术; 柏云(1987),女,江苏南京人,工程师,硕士,研究方向:计算机视觉,通信技术。

Fairness Guaranteed Resource Allocation Algorithm on Femtocell Networks

  1. 1. Rail Technology Branch, Nari Technology Development Limited Company, Nanjing 210032, China;

     2. Electromechanical Department, Jiangsu Province Institute for Medical Equipment Testing, Nanjing 210022, China
  • Received:2014-06-10 Online:2014-10-10 Published:2014-11-04

摘要: 家庭基站是一种低成本低功耗,由用户部署的小型基站,能提供更好的室内覆盖效果和数据速率。但是在无协作频谱复用场景中,小区间干扰已经成为当前主要问题。本文提出一种保证公平性的频谱资源分配算法。首先提出一种基于干扰图的公平系数来确定FAP使用频谱资源数的下界值,保证FAP间资源分配的公平性;然后提出灵活的准则用于资源分配。仿真结果表明,本文提出的公平算法不仅提高了用户平均吞吐量和小区边缘用户吞吐量,同时也确保了资源分配的公平性。

关键词: 关键词: Femtocell, 资源分配, 协作, 吞吐量

Abstract: Userdeployed lowpower Femtocell access points (FAPs) can provide better indoor coverage and higher data rates than conventional cellular networks. However, a major problem in this uncoordinated frequency reuse scenario is the intercell interference. In this paper, we propose a graph based distributed algorithm called fairness guaranteed cooperative resource allocation (FGCRA) to manage interference among Femtocells. Firstly, we propose a specific fairness factor obtained from twohop interference relations, to determine the lower bound amount of subchannels that each FAP can use and guarantee the fairness among Femtocells. Secondly, we propose scalable rules for distributed resource allocation and the solution to avoid the conflicts among interfering neighbors. Simulation results show that our proposed FGCRA significantly enhances both average user throughput and cell edge user throughput, and provides better fairness.

Key words: Key words: , Femtocell, resource allocation, cooperation, throughput

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