宏微协同组网下基于小区分簇的联合传输与无线资源分配

针对宏微协同组网下小区间无线资源管理问题,文章提出一种大规模多入多出系统下基于微小区分簇的联合传输和动态频谱分配策略,该策略分两步执行以优化网络加权和速率.首先,所提算法根据各用户当前的信道状态执行微小区分簇,以尽可能地降低小区间干扰,提升系统容量.接着,宏基站和各微小区簇根据所服务用户当前的业务请求信息分别为其动态分配子载波,以最大化网络加权和速率,并提升资源利用率.仿真结果显示,该文提出的微小区分簇和动态频谱分配策略能在尽可能降低宏微协同组网中用户间干扰的同时,有效地提升系统吞吐量.

Cell Clustering-based Joint Transmission and Radio Resource Allocation in Macro-micro Collaborative Networking

For the inter-cell wireless resource management in macro-micro co-networking, proposed is a joint transmission and dynamic spectrum allocation strategy based on micro cell clustering in massive MIMO system. The strategy is implemented in two steps to optimize the network weighted sum rate. First, the proposed algorithm performs micro-cell clustering according to the current channel state information (CSI) of users, so as to reduce the inter-cell interference as much as possible and improve the system capacity. Then, the macro base station (MBS) and each micro-cell cluster dynamically allocate sub-carriers to its service users according to the current traffic request information to maximize the network weighted sum rate and improve the resource utilization. The simulation results show that the proposed micro-cell clustering and dynamic spectrum allocation strategy can not only effectively improve the system throughput but also reduce the interference among users in macro-micro collaborative networking.