![R&S CMW-KM5 Series Скачать руководство пользователя страница 33](http://html1.mh-extra.com/html/rands/cmw-km5-series/cmw-km5-series_user-manual_3148802033.webp)
LTE Signaling
R&S
®
CMW-KM5xx/-KS5xx
33
User Manual 1173.9628.02 ─ 16
Fig. 2-13: LTE DL frame structure for FDD
A TDD radio frame is also divided into 10 subframes. But for TDD three subframe
types are defined: DL subframe (two DL slots), UL subframe (two UL slots) and special
subframe. A special subframe contains the fields DwPTS, GP and UpPTS. 3GPP
defines several possible special subframe configurations, resulting in different lengths
of these fields, see 3GPP TS 36.211, table 4.2-1. The total length of a special sub-
frame equals 1 ms (same length for all subframe types).
The type of subframe number 0, 1, 2 and 5 is fixed. The type of the other subframes
depends on the used UL-DL configuration, see
Fig. 2-14: LTE DL frame structure for TDD
Table 2-1: Uplink-downlink configuration 0 to 6
Subframe Number
Configuration
0
1
2
3
4
5
6
7
8
9
0
D
S
U
U
U
D
S
U
U
U
1
D
S
U
U
D
D
S
U
U
D
2
D
S
U
D
D
D
S
U
D
D
3
D
S
U
U
U
D
D
D
D
D
4
D
S
U
U
D
D
D
D
D
D
5
D
S
U
D
D
D
D
D
D
D
6
D
S
U
U
U
D
S
U
U
D
D = downlink, U = uplink, S = special subframe
General Description
深圳德标仪器
135-1095-0799