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3GPPFDD_ULRadioSeg

Description: Radio frame segmentation
Library: 3GPPFDD, TrCH Multiplexers & Coders
Class: SDF3GPPFDD_ULRadioSeg
Derived From: 3GPPFDD_TrCHBase

Parameters

Name

Description

Default

Unit

Type

Range

SpecVersion

version of specifications: Version_03_00, Version_12_00, Version_03_02

Version_12_00

 

enum

 

DynTFSet

dynamic part of Transport Format Set

244 976

 

int array

TTI

Transmission Time Interval: TTI_10ms, TTI_20ms, TTI_40ms, TTI_80ms

TTI_10ms

 

enum

 

CRC

number of CRC bits: No_CRC, CRC_8_bits, CRC_12_bits, CRC_16_bits, CRC_24_bits

CRC_16_bits

 

enum

 

CHCodingType

channel coding type: No_Coding, CC_HalfRate, CC_OneThirdRate, TurboCoding

CC_HalfRate

 

enum

 

† The range for each element must be in [0:164480]; elements shall be paired integers; the first of the pair is the transport block size; the second one is the transport block set size; the second shall be multiple of the first.

Pin Inputs

Pin

Name

Description

Signal Type

1

SizeIn

input size

int

2

DataIn

input data

int

Pin Outputs

Pin

Name

Description

Signal Type

3

SizeOut

output size

int

4

DataOut

output data

int

Notes/Equations
  1. This model is used to implement uplink radio frame segmentation. When the transmission time interval is longer than 10 msec, the input bit sequence is segmented and mapped onto consecutive Fi radio frames. After rate matching in the DL, the input bit sequence length is guaranteed to be an integer multiple of Fi.
    The input bit sequence is denoted by xi 1, xi 2, xi 3, ..., xiXi where i is the TrCH number and Xi is the number bits. The Fi output bit sequences per TTI are denoted by yi,ni 1, yi,ni 2, yi,ni 3, ..., yi,ni Xi, where n i is the radio frame number in current TTI and Yi is the number of bits per radio frame for TrCH i. The output sequences are defined as follows:

    yi,n,k = xi,((ni - 1) ×Yi ) +k, ni = 1 ... Fi, k = 1 ... Yi

    where

    Yi = ( Xi / Fi ) is the number of bits per segment.

    The nith segment is mapped to the ni th radio frame of the transmission time interval.
  2. This model fires once per radio frame. Each firing, this model inputs a data block of one radio frame, and previous model (first interleaving) inputs a data block of one TTI. ADS will automatically fire this model multiple times, if necessary. For example, if TTI = 40 msec, this model will fire four times while the previous model fires once. To avoid mismatch, the pin SizeIn buffer is set according to TTI.
    Each firing, one token is consumed by pin SizeIn; this token indicates the effective length of data block input at pin DataIn. After radio frame segmentation, the data block is output at pin DataOut, and a token is generated by pin DataOut to indicate the effective length of the output data block.
  3. The DynTFSet parameter requires an integer array. The correct format is transport block size 1, transport block set size 1, transport block size 2, transport block set size 2, etc. The size of this array must be a multiple of 2, and the transport block set size must be a multiple of the relative transport block size.

References
  1. 3GPP Technical Specification TS 25.212 V3.9.0, Multiplexing and Channel Coding (FDD) 2002-03, Release 1999.

    http://www.3gpp.org/ftp/Specs/2002-03/R1999/25_series/25212-390.zip

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