Introduction - If you have any usage issues, please Google them yourself
The air interface standard is referred to the network between the UE and the Uu interface, the L1, L2 and L3. L1 is based on TD-SCDMA technology, 3GPP TS 25.200 series specification a detailed description of the L1 L2 and L3 and the UTRA TDD mode, the corresponding description see 3GPP TS 25.300 and 3GPP 25.400 series specifications.