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A coding modulation method and related device

A coding modulation and coding method technology, applied in the field of coding modulation methods and related devices, can solve problems such as discarding data waste, avoid misjudgment problems, and reduce processing overhead.

Active Publication Date: 2016-06-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the CRC field and the Data field use the same coding and modulation method, and the coding and modulation order of the Data field (the coding and modulation order is inversely proportional to the correct rate of the coding and modulation) is usually higher than that of VHT-SIG-B, so even VHT- The demodulation and decoding of SIG-B's CRC check is wrong, but the subsequent Data field is correct. In this case, it is a great waste to discard all the subsequent data.

Method used

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  • A coding modulation method and related device
  • A coding modulation method and related device
  • A coding modulation method and related device

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Embodiment Construction

[0025] Embodiments of the present invention provide a coding and modulation method and a related device, which are used to avoid misjudgment caused by a high CRC error rate.

[0026] An embodiment of the encoding and modulation method in the embodiment of the present invention includes:

[0027] In the process of encoding and modulating a data packet, the VHT-SIG-B field of the VHT-SIG-B field in the data packet and the cyclic redundancy check code CRC field corresponding to the VHT-SIG-B field use the same modulation method.

[0028] see figure 1 , another embodiment of the encoding and modulation method in the embodiment of the present invention includes:

[0029] 101. The encoding and modulating device performs grouping of data packets;

[0030] In the wireless local area network, the coding and modulating device packs the data packet to be sent, and the data packet includes: a training sequence field, a control message field and a physical layer service data combination...

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Abstract

An embodiment of the invention discloses code modulation method and device. The code modulation method and device are used to avoid misjudgment caused by high CRC (cyclic redundancy check) error rate. The method includes: encoding and modulating data packets, and similarly modulating VHT-SIG-B (very high throughput signal B) fields and CRC fields corresponding to the VHT-SIG-B fields in the data packets. The invention further discloses a device related to the method.

Description

technical field [0001] The present invention relates to the communication field, and in particular designs a coding modulation method and a related device. Background technique [0002] Due to the existence of interference and noise in the channel environment, data transmission often has a certain error probability. In order to reduce the transmission error probability as much as possible, channel coding and Cyclic Redundancy Check (CRC, Cyclic Redundancy Check) protection operations are usually performed at the transmitter. [0003] Channel coding refers to adding certain redundant bits to data bits, so that the receiving end can increase the probability of correct data reception through decoding operations. The receiving end restores the transmitted information bits by decoding. The code rate reflects how much redundancy is added in the encoding process, code rate = number of information bits / (number of information bits + number of redundant bits), the lower the code rat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
Inventor 高磊夏林峰罗龙
Owner HUAWEI TECH CO LTD