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WCDMA Generator
R&S
®
CMW-KG4xx/-KM4xx/-KS4xx
916
User Manual 1173.9657.02 ─ 11
Table 6-3: RMC transport channel parameters (12.2 kbps)
Transport Channel Parameter
DTCH
DCCH
Transport Channel Number
1
2
Transport Block Size
244
100
Transport Block Set Size
244
100
Transmission Time Interval
20 ms
40 ms
Type of Error Protection
Convolution Coding
Convolution Coding
Coding Rate
1/3
1/3
Rate Matching attribute
256
256
Size of CRC
16
12
Position of TrCH in radio frame
fixed
fixed
6.2.3.2
Signaling Radio Bearer (SRB)
The data content of the SRB is defined on transport channel level in 3GPP TS 34.108.
The most important layer 1 parameters are shown in the following table.
The listed slot format determines additional parameters, see
SRB 1.7
SRB 2.5
SRB 3.4
SRB 13.6
DPCH Slot Format
0
6
4
8
Transmission Time Interval 80 ms
40 ms
40 ms
10 ms
Coding Type
Convolution Cod-
ing
Convolution Cod-
ing
Convolution Cod-
ing
Convolution Cod-
ing
Coding Rate
1/3
1/3
1/3
1/3
Rate Matching attribute
155
256
155
155
Size of CRC
16 bits
12 bits
16 bits
16 bits
TFS (TF0, TF1)
0 x 148 bits,
1 x 148 bits
0 x 100 bits,
1 x 100 bits
0 x 148 bits,
1 x 148 bits
0 x 148 bits,
1 x 148 bits
6.2.3.3
Blind Transport Format Detection (BTFD)
BTFD means that the UE receives transport blocks that contain no Transport Format
Combination Index (TFCI) and recognizes the transport format autonomously.
According to the conformance specification, BTFD tests are performed on a special set
of Reference Measurement Channels (RMCs) with variable DL DTCH transport format,
corresponding to data rates between 1.95 kbps and 12.2 kbps. The BTFD RMCs are
specified in 3GPP TS 25.101 and 34.121. The physical and transport channel parame-
ters of the RMCs used for BTFD are listed below.
General Description
深圳德标仪器
135-1095-0799