单项选择题
中国移动2013年开始大规模部署的4G网络属于哪种制式()。
A.TD-LTE B.LTE-FDD C.WCDMA D.GSM
单项选择题 The Uplink State Flag(USF) field is part of:()
单项选择题 How many families of MCS are defined for EGPRS?()
单项选择题 The SCTP layer in the C7 signalling protocol stack is responsible for which of the following:()