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Efficient collection method for reliable storage of related data based on LT Codes

A reliability and data technology, applied in the direction of services based on specific environments, data exchange networks, digital transmission systems, etc., to achieve the effect of alleviating the steep wall effect

Inactive Publication Date: 2020-04-24
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to aim at the defect existing in the prior art, in order to solve the problem of traditional data collection pattern, propose the efficient collection method based on the relevant data reliability storage of LT Codes

Method used

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  • Efficient collection method for reliable storage of related data based on LT Codes
  • Efficient collection method for reliable storage of related data based on LT Codes
  • Efficient collection method for reliable storage of related data based on LT Codes

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Experimental program
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Embodiment 1

[0036] The efficient collection method related to data reliability storage of LT Codes involved in this embodiment includes a preparation stage and a collection stage, and its collection method includes the following steps:

[0037] 1) Preparation stage: according to the distance between the sensing nodes and the edge of the network, the routing hierarchy of the sensing nodes in the network is divided, and the nodes in the outermost circle of the network are selected as super nodes, as shown in the attached figure 1 As shown in , the aggregation node is placed outside the network, and the specific steps at this stage are shown in the attached figure 2 shown, including the following points:

[0038] 1.1) The aggregation node sends an excitation signal around the entire peripheral area of ​​the network, and the outermost nodes within the communication radius of the aggregation node receive the excitation signal, and record their own layer number as 1, and these outermost nodes ...

Embodiment 2

[0048] In order to alleviate the steep wall effect of LT Codes, this embodiment is optimized on the basis of Embodiment 1. The efficient collection method for data reliability storage of LT Codes involved in this embodiment includes the preparation stage and the collection stage. The collection method Include the following steps:

[0049] 1) Preparation stage: according to the distance between the sensing nodes and the edge of the network, the routing hierarchy of the sensing nodes in the network is divided, and the nodes in the outermost circle of the network are selected as super nodes, as shown in the attached figure 1 As shown in , the aggregation node is placed outside the network, and the specific steps at this stage are shown in the attached figure 2 shown, including the following points:

[0050] 1.1) The aggregation node sends an excitation signal around the entire peripheral area of ​​the network, and the outermost nodes within the communication radius of the aggre...

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Abstract

The invention relates to an efficient collection method for reliable storage of related data based on LT Codes. The method is characterized by comprising the following steps: 1) according to the distance between a sensing node and the edge of a network, carrying out routing hierarchy division on the sensing node in the network, selecting the outermost node in the network as a super node, and placing an aggregation node outside the network; 2) enabling the sensing node to forward the data stored by the sensing node layer by layer from the inner layer to the outer layer according to the sequenceof layer numbers from high to low according to the divided layers, enabling the data packet to finally arrive at the super node, enabling the super node to receive and store the data packet, and enabling the aggregation node to obtain the data of the sensing node in the network by accessing the super node so as to finish the data collection work. According to the method, the energy consumption ofthe nodes around the aggregation node can be shared, network paralysis is avoided, the steep wall effect of the LT Codes is relieved, and the decoding efficiency in the collection stage is improved.

Description

technical field [0001] The invention relates to a data collection method for improving LT codes, and more specifically designs a high-efficiency data collection method based on a reliability storage model of LT codes under a large-scale wireless sensor network. Background technique [0002] A wireless sensor network is composed of a series of multi-hop sensing nodes deployed in a designated area. Each sensing node is a resource-constrained, bandwidth-constrained, cheap device. These nodes are used to monitor the surrounding environment, perform some simple data recording and storage, and can periodically share the perceived data with the surrounding environment. Neighbor nodes exchange and transfer. In the collection phase, a sink node is usually fixed at a remote location, and the sensing node transmits the data to the sink node step by step through its neighbor forwarding; or a mobile sink node is used to enter the monitoring area to collect data from the sensing node . ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/38H04W40/02H04L12/715H04L1/00H04W84/18
CPCH04L1/0057H04L45/04H04W40/02H04W84/18H04W4/38
Inventor 王琛超张伟肖凤军熊乃学
Owner HANGZHOU DIANZI UNIV