无线蜂窝小区六十度裂向的扇区排布优化算法  

An Optimization Algorithm for Sector Topology Layout of Wireless Cellular Network with Sixty Degrees Sectoring

作　　者：于善泽 瞿重希 苏俊彦 YU Shanze;QU Chongxi;SU Junyan(School of Mechanical,Electrical&Information Engineering,Shandong University,Weihai 264209,China)

机构地区：[1]山东大学机电与信息工程学院,山东威海264209

出　　处：《无线电工程》2023年第6期1467-1478,共12页Radio Engineering

基　　金：山东省科技型中小企业创新能力提升工程项目(2021TSGC1028)。

摘　　要：为了进一步消除无线蜂窝网络中小区的同频干扰,减小同频小区之间干扰的复杂程度,基于小区六十度裂向的划分扇区方式,提出了一种错开同频信道的扇区划分方式。考虑到每个裂向小区中定向天线的辐射角度和正六边形蜂窝网络的几何结构,有规律地调整扇区在小区中的排列顺序,使小区内最坏信干比相比传统裂向算法得到改善,并减少最差信干比区域在小区内的分布。利用扇区的几何排布有效改善同频小区之间干扰的映射关系,实现小区之间的单向干扰而不是相互干扰,从而使提高发射机发射功率来克服同频干扰的方法成为可能。提出的算法通用于任意可实现的簇规模,且复杂度低,易于在庞大无线蜂窝网络体系中布置实施。仿真结果表明,所提算法在进一步降低同频干扰和降低干扰关系复杂度方面相比于传统算法具有优势。To further eliminate the co-channel interference of cells in wireless cellular networks,and reduce the complexity of interference between co-frequency cells,based on sixty degrees sectoring,a sector partition method of staggering the co-frequency channel is proposed.Considering the radiation angle of directional antennas in each sectorized cell and the geometric structure of the regular hexagonal cellular network,the arrangement order of sectors in the cell is regularly arranged,which could improve the worst signal to interference ratio comparing with traditional sectoring algorithm and reduce the distribution of the worst SIR region in the cell.The geometric arrangement of sectors is used to effectively improve the mapping relationship of interference between cells with the same frequency,and realize one-way interference between cells rather than mutual interference,which made it possible to improve transmission power of the transmitter to overcome co-channel interference.The proposed algorithm could be used in any realizable cluster size,and with its low complexity,it is easy to be deployed and implemented in large wireless cellular network systems.Simulation results demonstrate that the proposed algorithm has advantages over traditional algorithms in further reducing co-channel interference and the complexity of interference relationship.

关 键 词：蜂窝网络 小区裂向 同频干扰 干扰关系复杂度 

分 类 号：TN92[电子电信—通信与信息系统]