Fountain Code Transmission Method Based on Probabilistic Feedback and Stages in Self-Organizing Networks
A self-organizing network and transmission method technology, applied in the field of fountain code transmission based on probability feedback and stage type, and the transmission of fountain codes, can solve the problems of high coding and decoding complexity, uncontrollable feedback amount, and low transmission efficiency of fountain codes. , to achieve the effects of controllable feedback, high transmission efficiency, and simple coding and decoding
Active Publication Date: 2021-11-23
XIDIAN UNIV
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Problems solved by technology
[0005] The purpose of the present invention is to address the deficiencies of the above-mentioned prior art, and propose a fountain code transmission method based on probability feedback and stages, which is used to solve the problem of low fountain code transmission efficiency and compiling problems when the channel conditions are good in the existing fountain code transmission method. Technical problems with high code complexity and uncontrollable feedback
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[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0030] Refer to attached figure 1 , to further describe the specific steps of the present invention.
[0031] Step 1. Degree one sending phase.
[0032] When the number of original fountain code groups in the queue to be sent reaches the preset number, the sending end of the self-organizing network enters the first sending stage, and all the original fountain code groups in the queue to be sent are numbered sequentially.
[0033] The preset number is the number set by the user, but is limited by the size of the system memory.
[0034] Set the decoding probability of each original fountain code packet in the queue to be sent to 0, and send the original fountain code packets in the queue to be sent in sequence.
[0035] Step 2. Robust solitary wave distribution sending stage.
[0036] After sending the original fountain code group in the queue to be s...
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The invention discloses a fountain code transmission method based on probability feedback and stages in an ad hoc network, which mainly solves the problem of low fountain code transmission efficiency, high encoding and decoding complexity, and feedback volume when the channel condition is good in the existing fountain code transmission method. Uncontrollable technical problems. The implementation steps of the present invention are: 1, degree-one sending stage; 2, robust solitary wave distribution sending stage; 3, probability feedback part-ack information packet; 4, adjusting coding strategy; 5, completing the transmission of this group of fountain code packets . The present invention divides the sending end of the self-organizing network into two stages of degree-sending stage and robust solitary wave distribution sending stage to send and probabilistically feed back part-ack information packets, thereby improving the transmission efficiency of fountain code packets and reducing the encoding and decoding effort. the complexity.
Description
technical field [0001] The invention belongs to the technical field of communication, and further relates to a fountain code transmission method based on probability feedback and stages in an ad hoc network in the technical field of wireless communication. The invention can be used for the transmission of the fountain code in the ad hoc network. Background technique [0002] In recent years, fountain code technology has opened up new ways to improve network transmission efficiency and reliability. Fountain code is a new channel coding technology born in the early 21st century. It is essentially a rateless code. As long as the receiving end of wireless communication receives enough coded packets, it can realize correct decoding. Fountain codes have broad application prospects and have been adopted by international standards such as 3GPPTS 26.346. However, due to the shortcomings of poor wireless network stability and high packet loss rate, how to achieve efficient transmiss...
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IPC IPC(8): H04L1/00H04L1/16
CPCH04L1/0009H04L1/0043H04L1/0052H04L1/0057H04L1/1607
Inventor 史琰耿佳博盛敏刘俊宇李建东白卫岗
Owner XIDIAN UNIV