Frequency Division Duplex
The duplex separation of downlink (DL) and uplink (UL) is typically done either by using FDD or by using TDD.
Air interface standards using FDD are, for example, LTE FDD or UMTS FDD. To specify the FDD configuration of various air interfaces, click Air Interface tab and under Duplex Separation, click Settings.
. Select the- Duplex Separation
- Duplex separation between downlink and uplink channel in frequency duplex mode.