Data transmission processing method and device

A technology of data transmission and processing methods, which is applied in the field of communication, and can solve problems such as poor use of channels, insufficient use of error correction coding gains, and high decoding complexity

Active Publication Date: 2020-06-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of a low coding rate, it is necessary to pay a greater power penalty to meet the corresponding performance requirements, and the error correction coding gain cannot be fully utilized; The complexity will also be high
[0008] Aiming at the problem that the coding method in the related art cannot make good use of the channel error correction coding gain, no effective solution has been proposed

Method used

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  • Data transmission processing method and device
  • Data transmission processing method and device
  • Data transmission processing method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0149] It is used in the coding scheme design of the control physical layer (control PHY) of the IEEE802.11aj (45GHz) communication system, and the IEEE802.11aj (45GHz) mainly works in the frequency band near 45GHz. When data is transmitted from an access point (AP for short) to a station (station, STA for short) or from a STA to an access point, physical layer data needs to be encoded to improve reliability of data transmission. The terminals that can be used may include: handheld devices such as mobile phones, tablet computers, reading machines, and electronic watches, or other electronic devices that need to be connected to the Internet.

[0150] In this embodiment, a data header (header, equivalent to the above-mentioned source data block) needs to be encoded and transmitted, with a length of 40 bits. The error correction coding method used is LDPC coding, the code rate is 1 / 2, the code length is 672 bits, and the expansion factor is 42, so the information bits required fo...

Embodiment 2

[0157]It is used for the coding scheme design of the control physical layer (control PHY) of the IEEE802.11aj (45G) communication system, and the IEEE802.11aj (45G) mainly works in the frequency band near 45GHz. To transmit data from the access point to the station or from the station to the access point, it is necessary to encode the physical layer data to improve the reliability of data transmission. The terminals that can be used may include: handheld devices such as mobile phones, tablet computers, reading machines, and electronic watches, or other electronic devices that need to be connected to the Internet.

[0158] In this embodiment, the size of the transmission data field (data, equivalent to the above-mentioned source data block) needs to be L=4096 bits (512 bytes). The error correction coding method used is LDPC coding, the code rate is 1 / 2, the code length is 672 bits, and the expansion factor is 42, so the information bits required for LDPC coding are 336 bits, an...

Embodiment 3

[0168] In this embodiment, the size of the source data packet to be transmitted is L=3280 bits (410 bytes). The error correction coding method used is LDPC coding, the code rate is 1 / 2, the code length is 672 bits, and the expansion factor is 42, so the information bits required for LDPC coding are 336 bits, the check bits are 336 bits, and the cyclic redundancy check The code checking sequence length is 8 bits. The encoding processing method for the source data packet includes:

[0169] The longest effective information length of an LDPC code block is k0=328 bits, and the number of LDPC code blocks required by the data domain (data) is m0=ceil(L / k0)=10; in m0=10 LDPC code blocks, the 0th The bit length of ~9 information blocks is k1=ceil(L / m0)=328, there is no information block with bit length k2=k1-1=327, because m2=mod(L,k2)=10; where, ceil (x) represents the smallest integer greater than or equal to the real number x, and mod(x1, x2) represents the remainder operation of...

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Abstract

A data transmission processing method and device. The method comprises: duplicating a code data block to undergo spectrum-spreading into a plurality of code data blocks, and performing a bitwise logic operation for the plurality of code data blocks obtained via duplication and a pre-determined sequence in units of the code data block; or duplicating a constellation symbol modulated via a constellation map of code data to undergo spectrum-spreading into a plurality of constellation symbols, and performing an element multiplication with respect to the plurality of constellation symbols obtained via duplication and a pre-determined complex sequence in units of the constellation symbol of the code data block. The solution of the present invention addresses the problem in which a code method cannot correct a coding gain by utilizing a channel in the related art, thus advantageously utilizing the coding gain.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a data transmission processing method and device. Background technique [0002] IEEE802.11 is a wireless local area network standard, which is mainly used to solve the wireless access data network of user terminals in office local area networks. , After years of research and discussion, IEEE groups have launched multiple standards, such as 802.11a, 802.11b, 802.11m, 802.11ac, 802.11ad, 802.11aj and so on. 802.11aj is a next-generation wireless local area network standard based on China's millimeter-wave frequency band. The operating frequency is around 45 gigahertz (GHz), the available bandwidth is about 5 GHz, and the maximum throughput is expected to reach 10 gigabits per second (Gbps). [0003] figure 1 is a schematic diagram of a data communication system according to related technologies, such as figure 1 As shown, in a general wireless digital communication system, it ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH04B1/69H04L1/00
Inventor 李立广袁志锋许进徐俊
Owner ZTE CORP
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