Femtocell网络中基于分簇的资源分配机制

doi:10.11959/j.issn.1000-436x.2017003

Abstract

Abstract:

A based-cluster resource allocation mechanism was proposed for suppressing interference between Femtocell and Macrocell in Macro-Femto network.The mechanism included three parts,FBS was put in disjoint clusters by graph theory and convex optimization,then a sub-channel allocation algorithm was adopted to assign sub-channel to the FUE and MUE based on fairness of rate.In the end,power allocation was performed by using distributed algorithm.Simulation results show that the proposed mechanism effectively suppresses cross-tier and co-tier interference in the Macro-Femto network,improves the average rate,meanwhile satisfies the requirements of fairness of rate,which makes users more satisfied.

Key words: resource allocation, convex optimization, cluster, power allocation, Femtocell

CLC Number:

TN929.5

Hai-bo ZHANG,Jian ZOU,Kai-jian LIU,Shan-xue CHEN. Cluster-based resource allocation mechanism for Femtocell network[J]. Journal on Communications, 2017, 38(1): 16-25.

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参数	参数值
载波频率	2.0 GHz
可用信道数\|c\|	4
子信道带宽Δf	180 kHz
每个毫微微基站用户k_f	2～4
毫微微基站与用户距离	仿真时随机设置用户初始位置
宏基站覆盖半径/与建筑中心位置	500 m/100 m
毫微微基站与用户阴影衰落	4 dB
外墙损耗	20 dB
地板损耗	18.3 dB
高斯噪声功率	?174 dBm/Hz
宏基站发射功率	20 W
毫微微基站发射功率	30 mW
最小速率R_f	100 bit/s

Cluster-based resource allocation mechanism for Femtocell network

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