Data transmission method and data transmission device

A technology for data transmission and source data, applied in the fields of data transmission and network data transmission, it can solve the problems of low success rate of data recovery at the receiving end, increase the workload of decoding processing, and affect the speed of data transmission, so as to avoid low coverage and ensure Transmission rate, the effect of improving transmission quality

Active Publication Date: 2017-01-11
BEIJING UNIV OF POSTS & TELECOMM
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, when data is transmitted in parallel with multiple paths, if the selected primary path is inappropriate, for example, a path with a large load is selected as the primary path, the data transmission speed will be seriously affected
In addition, when using LT codes to encode according to the degree distribution function, if the degree distribution function generates a higher degree, although

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Data transmission method and data transmission device
  • Data transmission method and data transmission device
  • Data transmission method and data transmission device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] see figure 1 , figure 1 It is a flow chart of a data transmission method in an embodiment of the present invention, including the following steps:

[0042] Step 101, when the source node needs to send data, generate routing metric values ​​respectively corresponding to all the paths from the source node to the destination node according to the loads corresponding to each of the paths from the source node to the destination node;

[0043] Step 102, according to the route metric value, determine the path with the smallest load among all the paths from the source node to the destination node as the primary path from the source node to the destination node;

[0044] Step 103, determining all paths from the source node to the destination node other than the active path as backup paths from the source node to the destination node;

[0045] Step 104, grouping the data to be sent by the source node to generate source data packets to be sent;

[0046] Step 105, judging whethe...

Embodiment 2

[0097] On the basis of the first embodiment above, this embodiment illustrates by way of example the determination of the primary path and backup path from the source node to the destination node according to the routing metric value, and the degree adjustment function is used to generate the degree, and the LT code is used to encode according to the degree The specific process of processing. see Figure 9 , Figure 9 It is another flow chart of the data transmission method of the embodiment of the present invention, including the following steps:

[0098] Step 901, when the source node needs to send data, generate routing metric values ​​corresponding to the preset number of paths from the source node to the destination node according to the loads corresponding to all the paths from the source node to the destination node respectively ;

[0099] In the embodiment of the present invention, there are three paths from the source node to the destination node, namely path a, pa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

Embodiments of the invention provide a data transmission method and a data transmission device. The method comprises the following steps: when a source node needs to send data, calculating routing metric values corresponding to all paths from the source node to a destination node according to loading capacities corresponding to the paths; according to the routing metric values, determining the path with minimum loading capacity as a main path, and determining all the paths other than the main path as alternate paths; judging whether the number of coding groups sent by the source node reaches a preset threshold; if the number of coding groups sent by the source node reaches the preset threshold, generating a second degree through a degree adjustment function, and transmitting the coding groups generated through coding processing to the destination node through the main path and the alternate paths; and judging whether data needing to be sent by the source node is sent, and if the data is sent, returning to the step of judging whether the number of coding groups sent by the source node reaches the preset threshold. By implementing the embodiments of the invention, efficient transmission of data in a wireless multi-hop network is realized.

Description

technical field [0001] The invention relates to the technical field of network data transmission, in particular to a data transmission method and device. Background technique [0002] With the rapid development of multimedia technology, the requirements for the quality and rate of multimedia data transmission are getting higher and higher, especially for the transmission of multimedia data in wireless multi-hop networks. On the other hand, due to the unstable structure of the wireless multi-hop network, the transmission path often changes, and the data is easily interfered in the transmission process of the wireless signal, and the packet loss rate is high. The data recombination efficiency at the receiving end is low, resulting in a low accuracy rate of data transmission, all of which have a negative impact on the transmission of multimedia data in the wireless multi-hop network. [0003] At present, AOMDV (Ad Hoc On-demand Multipath Distance Vector Routing, Ad Hoc On-dema...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04W40/02H04L12/707H04L45/24
CPCH04L45/22H04W40/02
Inventor 段鹏瑞马华东
Owner BEIJING UNIV OF POSTS & TELECOMM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap