基于网络分层的电联4G/5G目标网络架构研究

Research on the 4G/5G Target Network Architecture of ITU Based on Network Layering

通信网络经过多轮迭代建设,从2G网络演进到5G网络,近几年来4G网络基本未投资建设,网络一直被容量问题追着走。目前4G/5G网络共存,而电联4G/5G共享后存在5个频段,电联双方并未进行全面定位,特别是低频。因此亟须重新定位频率、重构物理结构,为后续的频段演进奠定4G/5G网络。文章通过网络分层背景分析,研究电联4G/5G网络演进思路、构造目标网络结构;通过网络分层策略,低频打造深度覆盖层、中频打造基础覆盖层和容量层,高频打造热点容量层,共建成一张三频分层四场景的目标网络结构,此研究具有重要的指导意义。

The communication network has undergone multiple rounds of iterative construction,evolving from the 2G network to the 5G network.In recent years,the 4G network has not been invested in construction,and the network has been pursued by capacity issues.At present,4G/5G networks coexist,while there are five frequency bands after 4G/5G sharing in ITU.The two sides of ITU do not have a comprehensive positioning,especially low frequency.Therefore,it is urgent to reposition the frequency and reconstruct the physical structure to lay a 4G/5G network for the subsequent frequency band evolution.This paper studies the evolution idea and constructs the target network structure of the ITU 4G/5G network through background analysis of network layering.Through the network layering strategy,the deep coverage layer is built at low frequency,the basic coverage layer and the capacity layer are built at medium frequency,the hot spot capacity layer is built at high frequency,and a threefrequency layered and four-scene target network structure is built.This study has important guiding significance.