摘要
Abstract
In order to analyze impacts of the evolution process of mobile communications to 5G on the transport, especially PTN in the next few years, key requirements of 5G development for transport network were analyzed, including ultra-high bandwidth, low delay, network slice and east-west direction trafifc demands. In view of trends above, it was discussed that the metropolitan area transport PTN oriented to 5G will gradually move down to three-layer network, its architecture will be high-capacity, lfatting and lfexible-networking. In addition, based on tests of 5G throughputs in the laboratory, the bandwidth in metropolitan area transport network was calculated by building models to present the evolution direction and the technical feature of core layer, convergence layer and access layer for metropolitan area transport network.关键词
分组传送网/软件定义网络/三层网络/超高带宽需求/低时延需求/网络切片需求/东西向流量需求Key words
packet transport network/SDN three-layer network/ultra high bandwidth requirement/low delay requirement/network subdivision requirement/east-west trafifc requirement分类
信息技术与安全科学
