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All-in-one feedback retransmission method based on fountain codes

A fountain code and retransmission technology, which is applied in the field of all-in-one feedback retransmission based on fountain codes, can solve the problems of codec complexity feedback retransmission mechanism bandwidth utilization, affecting wireless communication data throughput, etc.

Inactive Publication Date: 2010-03-10
WUHAN ZHONGYUAN HUADIAN SCI & TECH
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Problems solved by technology

[0006] The technical problems to be solved by the present invention are: how to mainly solve the algorithm flow problem of how to use the unique fountain code series to encode and decode each data block; to solve the problems of many factors affecting the throughput rate of wireless communication data; The complexity of the problem and how to improve the bandwidth utilization of the feedback retransmission mechanism and other related technical issues

Method used

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  • All-in-one feedback retransmission method based on fountain codes
  • All-in-one feedback retransmission method based on fountain codes
  • All-in-one feedback retransmission method based on fountain codes

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Embodiment Construction

[0101] Please refer to the attached figure 1 , 2, 3, 4, and 5, in the high-speed data transmission in the field of wireless communication of the present invention, the working mechanism of the error code feedback retransmission method is: when the receiving end of a wireless link still decodes a data packet When a residual error or decoding failure is detected, it notifies the sender to retransmit the packet with the same encoding or to retransmit different parts of the same encoding multiple times until the number of successful decoding or retransmissions of the packet reaches a threshold value, the receiving end will softly combine different copies of the same data packet received or different parts of the same code to complete error correction and decode to get the correct original data; error control methods include: automatic retransmission request ARQ scheme and block coding, convolutional coding and Turbo code pure forward error correction coding FEC scheme; using hybr...

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Abstract

The invention relates to the information technology field of radio electronics and telecommunication technology, and relates to an aggregate of wireless enhancement technology of high-speed data transmission in the wireless communication field, in particular to an all-in-one feedback retransmission method based on fountain code mainly applied to wireless channel data transmission high-speed data service in a general mobile communication system. The method utilizes the ratioless channel coding principle of the fountain code, improves the existing mixed bit error feedback retransmission HARQ method and data coding mode in a wireless link, and mainly solves the relevant technical problems of how to utilize unique fountain code series to carry out the algorithm flow of coding and decoding foreach data block. The method has the beneficial effects that the feedback retransmission method and relevant fountain code design scheme can lead the data throughput of the wireless link to be improvedby 110% compared with the prior art, and the method has higher efficiency when the data blocks segmented in each group is more or the initial transmission groups sharing the same retransmission groupare more.

Description

technical field [0001] The present invention relates to the information technology field of radio electronics and telecommunication technology, especially a collection of wireless enhancement technologies for high-speed data transmission in the field of wireless communication, which is mainly applied to high-speed wireless channel data transmission in general mobile communication systems. Fountain code-based all-in-one feedback retransmission technology for data services. Fountain code is usually used as a type of forward error correction code and used in non-real-time (or high tolerance to delay) applications / occasions. Background technique [0002] The working mechanism of the existing error feedback retransmission technology: when the receiving end of a wireless link still detects residual errors (or decoding failures) after decoding a data packet, it will notify the sending end to retransmit with the same code This data packet (HARQ ChasingCombining) or retransmit differ...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04L1/16H04L1/00
Inventor 李卓群
Owner WUHAN ZHONGYUAN HUADIAN SCI & TECH
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