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广电总局主导建设的下一代广播电视网(NGB),分为骨干网、城域网和接入网几个部分,保证未来每户接入速率达到45Mbps,可以提供广播电视、语音、数据等多种业务。由于光纤建设成本大幅下降与DWDM技术的成熟,干线网络传输带宽已经得到有效缓解,但接入网问题在技术、工程、成本等方?
The Next Generation Broadcasting Network (NGB), which is under the lead construction of SARFT, is divided into several parts: backbone network, metropolitan area network and access network to ensure that each household can access 45Mbps in the future and can provide radio, television, voice, data, etc. Kind of business As the optical fiber construction costs dropped significantly and DWDM technology matures, trunk network transmission bandwidth has been effectively alleviated, but the access network problems in technology, engineering, cost and other parties?