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Data transmission method and device

A data transmission method and equipment technology, applied in digital transmission systems, transmission systems, electrical components, etc., can solve the problems affecting decoding performance, difference in signal-to-noise ratio, and different demodulation performance, and improve data decoding performance. , reducing the difference, the effect of interference equalization

Active Publication Date: 2015-01-14
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the different interference received by each CB, the corresponding signal-to-noise ratio (SINR) will be different, resulting in different demodulation performance of each CB
A decoding error of any CB will cause a decoding error of the entire TB
[0024] In summary, the current resource mapping method will cause different decoding performances of different CBs, thus affecting the decoding performance of the entire TB

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] In this embodiment, one TB is divided into 3 CBs, and the lengths of coded information corresponding to all CBs are equal.

[0118] Step 1: After the sender adds CRC information to the TB to be transmitted, if the TB is larger than 6144 bits, divide the TB into three CBs: CB1, CB2, and CB3, and add CRC information after each CB; Each CB performs turbo encoding and rate matching respectively to obtain the encoding information of each CB;

[0119] Step 2: The sending end interleaves and concatenates the information bit segments contained in the coding information of each CB to obtain the coding information of the TB, such as Figure 8b shown;

[0120] Step 3: The sending end modulates the coded information of the TB, and sends the modulated data;

[0121] Specifically, in step 2, the sending end interleaves and concatenates the information bit segments contained in the coded information of each CB as follows:

[0122] Assume Where L is the length of the coded informa...

Embodiment 2

[0126] In this embodiment, one TB is divided into three CBs, and all CBs have the same length.

[0127] Step 1: The receiving end receives the data corresponding to the TB sent by the sending end, and demodulates the received data to obtain the encoding information of the TB;

[0128] Step 2: The receiving end de-concatenates the coding information of the TB to obtain the coding information of multiple CBs, wherein the coding information of the TB is obtained by interleaving and concatenating information bit segments contained in the coding information of each CB, as shown in Figure 8b shown;

[0129] Step 3: The receiving end performs de-rate matching and decoding processing on each CB.

[0130] Specifically, in step 2, the coding information of the TB is obtained by interleaving and concatenating the information bit segments contained in the coding information of each CB, and the specific method is as follows:

[0131] Assume Where L is the length of the coded informati...

Embodiment 3

[0135] In this embodiment, one TB is divided into three CBs, and there are two kinds of encoded information lengths corresponding to the CBs, CB1 corresponds to a shorter encoded information length, and CB2 and CB3 correspond to longer encoded information lengths.

[0136] Step 1: After the sender adds CRC information to the TB to be transmitted, if the TB is larger than 6144 bits, divide the TB into three CBs: CB1, CB2, and CB3, and add CRC information after each CB; Each CB performs turbo encoding and rate matching respectively to obtain the encoding information of each CB;

[0137] Step 2: The sending end interleaves and concatenates the information bit segments contained in the coding information of each CB to obtain the coding information of the TB, such as Figure 8b shown;

[0138] Step 3: The sending end modulates the coded information of the TB, and sends the modulated data;

[0139] Specifically, in step 2, the sending end interleaves and concatenates the informati...

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Abstract

The embodiment of the invention discloses a data transmission method and device, and relates to the field of wireless communication. The data transmission method and device are used for improving data coding performance of receiving end equipment. According to the scheme, when conducting cascade connection on coding information of all coding blocks (CB) correspondence to a transmission block (TB), sending end equipment conducts interleaving cascade connection on information bit segments contained by the coding information of all the CBs, so that information bits in the coding information of all the CBs are distributed in coding information of the TB in an interwoven mode; in this way, when the modulated coding information of the TB is later mapped to physical resources, the coding information of all the CBs can be evenly distributed in the whole physical channel resources. Accordingly, the effect, caused by the situation that different CBs have different coding properties, on the coding property of the TB is reduced, and the data coding property of the receiving end equipment is improved.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a data transmission method and equipment. Background technique [0002] For the traffic channel of the Long Term Evolution (LTE) system, when a transport block (Transport Block, TB) is larger than 6144 bits (including 24-bit cyclic redundancy check (Cyclic Redundancy Check, CRC) information), it is necessary to perform The code block is divided to obtain multiple code blocks (Code block, CB) with smaller lengths. Then, channel coding (Turbo coding) and rate matching are performed on each CB respectively. Concatenate the coded information independently coded for each CB in order to obtain the TB coded information to be transmitted d(0),...,(M symb -1) M symb The total length of TB coded information, the specific process is as follows figure 1 shown. in, B is the size in terabytes. The lengths of the divided CBs may be equal, or may have two lengths. When ther...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/0057H04L1/0064H04L1/0071
Inventor 林亚男沈祖康
Owner DATANG MOBILE COMM EQUIP CO LTD
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