摘要
Abstract
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 three-frequency layered and four-scene target network structure is built.This study has important guiding significance.关键词
网络分层/覆盖层/容量层/演进思路/网络架构Key words
network layering/covering layer/capacity layer/evolution idea/network architecture分类
信息技术与安全科学
