LTE physical (PHY) layer Alternative frame structure for TDD only mode.
LTE Physical layer also supports an alternative frame structure to transmit data only in TDD mode over the RF link.
In this structure the radio frame is divided into two half-
frames. Each half- frame is made up of 7 time slots. First time slot (TS0) in frame must contain DwPTs, pilot information for downlink. Second time Slot (TS1) in frame must contain UpPTs pilot information for Uplink. Also TS0 and TS1 should be separated with guard bands (GP).
LTE alternative frame structure to support TDD is discussed below.