LTE TDD frame
36.211 frame structure type 2 (DL / UL / SSF)
| Configuration | 3GPP release |
Downlink to uplink switch point periodicity (ms) |
Subframe number | Number of subframes / frame | |||||||||||||
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | D [DL] | U [UL] | S [SSF] | |||||
| 0 | 8 | 5 | D | S | U | U | U | D | S | U | U | U | 2 | 6 | 2 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 8 | 5 | D | S | U | U | D | D | S | U | U | D | 4 | 4 | 2 | ||
| 2 | 8 | 5 | D | S | U | D | D | D | S | U | D | D | 6 | 2 | 2 | ||
| 3 | 8 | 10 | D | S | U | U | U | D | D | D | D | D | 6 | 3 | 1 | ||
| 4 | 8 | 10 | D | S | U | U | D | D | D | D | D | D | 7 | 2 | 1 | ||
| 5 | 8 | 10 | D | S | U | D | D | D | D | D | D | D | 8 | 1 | 1 | ||
| 6 | 8 | 5 | D | S | U | U | U | D | S | U | U | D | 3 | 5 | 2 | ||
- D
- Downlink subframe
- S
- Special subframe (see befow)
- U
- Uplink subframe
Graphical view of one TDD frame (10ms)
SSF Special SubFrame, normal CP (Dw / GP / Up)
| Configuration | 3GPP release |
DwPTS | UpPTS | Number of OFDM symbols / subframe | |||
| (Ts) | (Ts) | Dw | GP | Up | |||
| 0 | 8 | 6592 | 2192 | 3 | 10 | 1 | |
|---|---|---|---|---|---|---|---|
| 1 | 8 | 19760 | 2192 | 9 | 4 | 1 | |
| 2 | 8 | 21952 | 2192 | 10 | 3 | 1 | |
| 3 | 8 | 24144 | 2192 | 11 | 2 | 1 | |
| 4 | 8 | 26336 | 2192 | 12 | 1 | 1 | |
| 5 | 8 | 6592 | 4384 | 3 | 9 | 2 | |
| 6 | 8 | 19760 | 4384 | 9 | 3 | 2 | |
| 7 | 8 | 21952 | 4384 | 10 | 2 | 2 | |
| 8 | 8 | 24144 | 4384 | 11 | 1 | 2 | |
| 9 | 11 | 13168 | 4384 | 6 | 6 | 2 | |
- DwPTS
- Downlink Pilot Time Slot
- UpPTS
- Uplink Pilot Time Slot
- GP
- Guard period