Opportunistic routing protocol data distributing method based on fountain code and network coding

A technology of network coding and routing protocol, applied in the direction of network traffic/resource management, digital transmission system, transmission system, etc., it can solve problems such as data loss, inability to change code rate in real time, network congestion, etc., to save energy loss, reduce The effect of transmission and retransmission times and increasing the amount of information
CN102170332AInactive Publication Date: 2011-08-31XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2011-08-31
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to an opportunistic routing protocol data distributing method based on fountain code and network coding. The method includes the specific steps of numbering all the network nodes and establishing routing information under the TinyOS system; segmenting and numbering the data, calculating the receive threshold of each node; with regard to source nodes, carrying out the precoding to the data via fountain codes, and maintaining a send window which controls the quantity of the data packet in the network; with regard to intermediate nodes, carrying out the network coding to the data packet of the same segment, and sending the coded data by the opportunistic routing method; with regard to information sink codes, carrying out the network decoding to the data, and then carrying out the fountain code decoding to the data which go through the network decoding. The invention realizes the combination of the network coding and the opportunistic routing, increases the contentsof information in single transmission, but decreases the transmission and retransmission frequencies of the data packet, thus having the advantages of reliable data transmission, improved network efficiency, and reduced energy consumption of sensor nodes.
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Description

technical field

[0001] The invention belongs to the technical field of communication, and further relates to a data distribution method using fountain codes, network codes and opportunistic routing protocols in a wireless sensor network. The method uses fountain code and network coding to encode data, uses improved opportunistic routing protocol for data transmission, and the receiving end performs network decoding on the received data to restore the original data information, which can be applied to data distribution of wireless sensor networks. Background technique

[0002] At present, in the field of network communication technology represented by network coding, the combination of network coding technology and opportunistic routing technology is widely used to achieve reliable data transmission and improve network efficiency.

[0003] Chachulski et al proposed a A random chance routing method MORE (MAC-independent opportunistic routing and encoding protocol), which comb...

Claims

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