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Method for improving network coding and data transmission based on RPL protocol

A data transmission method and network coding technology, applied in the direction of link quality-based transmission modification, digital transmission system, transmission system, etc.

Inactive Publication Date: 2017-05-17
UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0040] There is no relevant research on the mechanism of improving data reliability in the RPL network, so a combination of GrowthCodes and RPL routing protocol is needed, and an improved data transmission scheme based on Growth Codes is proposed

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  • Method for improving network coding and data transmission based on RPL protocol
  • Method for improving network coding and data transmission based on RPL protocol
  • Method for improving network coding and data transmission based on RPL protocol

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Embodiment Construction

[0129] Further describe the technical scheme of the present invention in detail below in conjunction with accompanying drawing:

[0130] The network environment set by Growth Codes is "zero configuration", and nodes cannot obtain valid network topology information. In the scenario set in this paper, network coding is applied to the network running the RPL routing protocol, and the nodes can use the known topology information to optimize and improve the network coding process. In this embodiment, the Growth Codes can be improved in the following aspects:

[0131] 1. The node has a part of the topology information and the direction of the data collection node, so it can choose the neighbors close to the data collection node to send data to avoid data loops and data backflow.

[0132] 2. In order to reduce the overhead of sending packets, instead of using the distributed degree growth scheme of Growth Codes, this paper adopts a scheme with coded degree feedback mechanism and mod...

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Abstract

The invention discloses a method for improving network coding and data transmission based on an RPL protocol. The method comprises the steps of topological information obtaining, control over node codability growth, control over sensor node data packet retransmission, data coding and data decoding. The method aims at improving the robustness of data transmission of a wireless sensor network through a network coding scheme; under the condition that loss of the data transmission of the wireless sensor network has high possibility, the distributed data storage and network coding concept of Growth Codes is utilized, and the coding scheme of the Growth Codes is improved with the combination of the RPL routing protocol. By simulation testing and comparison with a network without a network coding scheme, the designed network coding scheme based on the Growth Codes is verified, so that the reliability of data transmission of a wireless sensor network operating the RPL routing protocol is improved obviously.

Description

technical field [0001] The invention relates to an improved network coding and data transmission method based on the RPL protocol. Background technique [0002] Since most application scenarios of wireless sensor networks have the characteristics of poor link quality, in such an environment, data collection will be greatly affected. RPL is a routing protocol used for a class of low-power, lossy-connected networks such as wireless sensor networks. After simulation tests, the protocol can operate normally in networks with poor link quality. However, in such a network environment, there is a common situation of packet loss, and the effectiveness of data transmission in such a network is very poor. As the network scale increases, the number of hops from sensor nodes to data collection nodes increases, and the data of data collection nodes Collection rates tend to drop significantly. [0003] In traditional wireless networks, there are already many solutions to solve the proble...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04W4/00H04W40/02
CPCH04L1/0009H04L1/0076H04W4/70H04W40/02Y02D30/70
Inventor 秦爽冯钢宋志群王刚
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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