Intelligent cooperative retransmission method, device and system thereof in wireless ad hoc network

A wireless self-organization and retransmission technology, applied in transmission systems, digital transmission systems, error prevention, etc., can solve the problems of increased node power consumption, no consideration of RF channel consistency, difficult coherent combining at the receiving end, etc. delay, improve the probability of correct reception, and improve the effect of reliability
CN109995477BActive Publication Date: 2020-10-09JIANGXI LIANCHUANG SPECIAL MICROELECTRONICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGXI LIANCHUANG SPECIAL MICROELECTRONICS
Publication Date
2020-10-09

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Abstract

The invention discloses an intelligent cooperative retransmission method in a wireless ad hoc network and equipment and a system thereof. A destination node used in the wireless ad hoc network requests to retransmit a data packet to a source node through a cooperative retransmission node, the destination node judges the reason of the data packet error according to the received data packet from thesource node, and selects a cooperative retransmission mode if the reason of the data packet error is the error caused by a channel condition between the source node and the destination node; if not,a source node retransmission mode is selected; and a retransmission mode trigger frame is formed according to the selected retransmission mode, and the retransmission mode trigger frame is sent out. According to the invention, the correct receiving probability of data retransmission can be improved, the reliability of data transmission can also be improved, and the time delay of data transmissionis effectively reduced.
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Description

technical field

[0001] The invention relates to an intelligent cooperative retransmission method in a wireless ad hoc network, and also relates to an intelligent cooperative retransmission device and system in a wireless ad hoc network, belonging to the technical field of wireless communication. Background technique

[0002] At present, for data packet retransmission in the wireless ad hoc network, some people have proposed the technical idea of ​​cooperative retransmission, specifically the following three methods.

[0003] The first method is that when the destination node requests retransmission using NACK information, the neighbor node of the direct link detects packet exchange, and retransmits the data packet when a data packet reception error occurs (NACK is detected). This method does not take into account the cause of packet transmission errors. If the data packet reception error is not caused by the poor channel quality of the direct link between the source node an...

Claims

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