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WCDMA3G_VariableSrc


Description: Variable-rate data source
Library: 3GPPFDD 10-99, Measurement
Class: SDFWCDMA3G_VariableSrc

Parameters

Name

Description

Default

Type

InfoType

information rate type: INFO_8_kbps, INFO_16_kbps, INFO_32_kbps, INFO_64_kbps, INFO_128_kbps, INFO_256_kbps, INFO_512_kbps

INFO_8_kbps

enum

TTI

transmission time interval: TTI_10ms, TTI_20ms, TTI_40ms, TTI_80ms

TTI_10ms

enum

VariableRate

indicate presence of variable rates: Yes, No

Yes

enum

Pin Outputs

Pin

Name

Description

Signal Type

1

TFMax

maximum transport format for current service

int

2

out

information data

int

3

TF

current transport format for current service

int

Notes/Equations
  1. This model is used to implement a variable-rate data source. Random data of one transport block is output each TTI; at the same time, the value of current transport format (TF) and maximum transport format (TFMax) are output several times based on the settings of TTI. Within one TTI, the value of TF cannot change; during different TTIs, it can change to some lower value so that the valid output data can also change. The number of output tokens is listed in the following table.
    Output Tokens
    InfoType TTI Out Tokens TF/TFMax Tokens
    INFO_8_kbps 10ms 80 1
    20ms 160 2
    40ms 320 4
    80ms 640 8
    INFO_16_kbps 10ms 160 1
    20ms 320 2
    40ms 640 4
    80ms 1280 8
    INFO_32_kbps 10ms 320 1
    20ms 640 2
    40ms 1280 4
    80ms 2560 8
    INFO_64_kbps 10ms 640 1
    20ms 1280 2
    40ms 2560 4
    80ms 5120 8
    INFO_128_kbps 10ms 1280 1
    20ms 2560 2
    40ms 5120 4
    80ms 10240 8
    INFO_256_kbps 10ms 2560 1
    20ms 5120 2
    40ms 10240 4
    80ms 20480 8
    INFO_512_kbps 10ms 5120 1
    20ms 10240 2
    40ms 20480 4
    80ms 40960 8
  2. The maximum data length and maximum transport format (TFMax) are calculated based on the settings of InfoType and TTI.
    Within one TTI, the current transport format (TF) and valid length of output data are determined according to the following table.
    Within the valid length of transport block, 0 or 1 is randomly output. All 0s are padded after the valid length in the transport block and all data, TF, and TFMax are output.
    TF/TFMax and Valid Data Length
    InfoType TTI TFMax Possible TFs Valid Data Length
    INFO_8_kbps 10ms 0 0 80
    20ms 1 1 160
    40ms 2 2 320
    80ms 3 3 640
    INFO_16_kbps 10ms 4 0/4 80/160
    20ms 5 1/5 160/320
    40ms 6 2/6 320/640
    80ms 7 3/7 640/1280
    INFO_32_kbps 10ms 8 0/4/8 80/160/320
    20ms 9 1/5/9 160/320/640
    40ms 10 2/6/10 320/640/1280
    80ms 11 3/7/11 640/1280/2560
    INFO_64_kbps 10ms 12 12 640
    20ms 13 13 1280
    40ms 14 14 2560
    80ms 15 15 5120
    INFO_128_kbps 10ms 16 12/16 640/1280
    20ms 17 13/17 1280/2560
    40ms 18 14/18 2560/5120
    80ms 19 15/19 5120/10240
    INFO_256_kbps 10ms 20 12/16/20 640/1280/2560
    20ms 21 13/17/21 1280/2560/5120
    40ms 22 14/18/22 2560/5120/10240
    80ms 23 15/19/23 5120/10240/20480
    INFO_512_kbps 10ms 24 12/16/20/24 640/1280/2560/5120
    20ms 25 13/17/21/25 1280/2560/5120/10240
    40ms 26 14/18/22/26 2560/5120/10240/20480
    80ms 27 15/19/23/27 5120/10240/20480/40960

References
  1. 3GPP Technical Specification TS25.302 V3.1.0,"Services Provided by the Physical Layer," October 1999.
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