5G异构网络用户关联及回传带宽分配技术

User Association and Backhaul Bandwidth Allocation for 5G Heterogeneous Network

由于用户移动特性及无线信道时变特性,如何在网络环境下为用户提供合适的服务,以及如何在网络环境下,根据网络环境下的节点负荷进行高效的资源配置是亟待解决的问题。建立了一个2层无线异构网络的数学模型。以此为基础,通过迫零预编码技术计算该2层无线异构网络的信道容量,并采用了反向时分双工、基站休眠等技术实现对无线异构网络进行干扰管理。此外,提出了一种基于联合优化算法新型的求解算法,该算法可以有效地解决5G异构网络中的干扰管理、小基站接入和回传带宽分配等关键问题,在性能上比现有的基于用户接入和资源配置的算法更优。

Due to the mobile characteristics of users and the time-varying characteristics of wireless channels,it is urgent to provide appropriate services for users in the network environment,as well as to efficiently allocate resources based on the node load in the network environment.The article establishes a mathematical model for a two-layer wireless heterogeneous network.Based on this,the channel capacity of the 2-layer wireless heterogeneous network is calculated using zero forcing precoding technology,and techniques such as reverse time division duplex and base station sleep are used to achieve interference management for the wireless heterogeneous network.Finally,a novel solving algorithm based on joint optimization algorithm was proposed,which can effectively solve key problems such as interference management,small base station access,and bandwidth allocation in 5G heterogeneous networks.The algorithm performs better than existing algorithms based on user access and resource allocation.