A.高清電視及視頻業(yè)務(wù)場(chǎng)景B.海量機(jī)器類通信業(yè)務(wù)場(chǎng)景C.高可靠低延時(shí)連接業(yè)務(wù)場(chǎng)景D.增強(qiáng)型移動(dòng)寬帶業(yè)務(wù)場(chǎng)景