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Link retransmission method in wireless sensor network

A wireless sensor and link technology, applied in the field of data packet retransmission, can solve the problems of unable to obtain satisfactory data retransmission effect, consider link attributes in time and space, and achieve the effect of satisfactory data retransmission effect.

Active Publication Date: 2015-05-06
RUN TECH CO LTD
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AI Technical Summary

Problems solved by technology

Existing retransmission strategies implement data retransmission through methods such as end-to-end confirmation, hop-to-hop confirmation, etc., but these strategies do not consider link attributes in both time and space, and cannot achieve satisfactory data retransmission effects

Method used

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  • Link retransmission method in wireless sensor network
  • Link retransmission method in wireless sensor network
  • Link retransmission method in wireless sensor network

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Embodiment Construction

[0049] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0050] The link retransmission method in the wireless sensor network proposed by the present invention involves link burst modeling, link correlation degree modeling, retransmission decision-making, etc., and is used to realize the common retransmission of the forwarding protocol in the wireless sensor network. transmission strategy to further improve the reliability and efficiency of the network.

[0051] This method uses the conditional probability model to obtain the time and space attributes of the data link in the wireless sensor network. When the sending node fails to send data packets continuously, it predicts the probability of successful retransmission, and selects a continuous retransmission stop point to stop going to the network. The link whose link quality has been greatly reduced (the link lower than the link quality index) continues to retransmit...

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Abstract

The invention provides a link retransmission method in wireless sensor network, the method adopts the contingent probability model to obtain the attribute of the data link of the wireless sensor network on the time and space, when the sending node continuously sends the data package for failure, forecasting the retransmission successful probability, selecting one continuous retransmission stop point and stopping retransmitting the data package to the link, the link quality of which is lower than the link quality measurable indicator, selecting the link with highest retransmission successful probability and transmitting the data. Concretely, the link retransmission method comprises the following steps: 1, building the link sudden model; step 2, building the link related model; step 3, sending the node data package retransmission decision algorithm. The data package can be retransmitted successfully and the data package lost probability is reduced.

Description

technical field [0001] The invention relates to a wireless sensor network, in particular to a data packet retransmission method in the wireless sensor network. Background technique [0002] With the increasing maturity of communication, sensor manufacturing, and embedded computing, large-scale wireless sensor network technology develops rapidly and is widely used in many fields such as environment, national defense, medical treatment, and urban management. A typical wireless sensor network is composed of a large number of miniature sensor nodes, which can be rapidly deployed in harsh and dangerous environments, and form a network through wireless self-organization, which is not limited by the existing wired network infrastructure. Sensing data is gathered to the data processing center through multi-hop relay through wireless communication. Wireless sensor networks enable people to obtain a large amount of detailed and reliable information in real time at any time, place and...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04W84/18
Inventor 刘代波何源曹志超王继良韩建康
Owner RUN TECH CO LTD
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