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Opportunistic routing method based on network coding in wireless network

A wireless network and network coding technology, which is applied in the field of opportunistic routing based on network coding in wireless networks, can solve the problems of lower overall throughput and longer transmission time of unit data packets, so as to improve throughput, improve coding opportunities, The effect of reducing the number of transfers

Active Publication Date: 2021-03-30
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This filling method will lead to a large amount of invalid transmission data in the network, which will lengthen the transmission unit data packet time and bring more unnecessary delays. At the same time, these invalid transmission data will also reduce the overall throughput of the system.

Method used

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  • Opportunistic routing method based on network coding in wireless network
  • Opportunistic routing method based on network coding in wireless network
  • Opportunistic routing method based on network coding in wireless network

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Embodiment Construction

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] In the opportunistic sensing routing of the present invention, the candidate forwarding set is determined by the expected number of transmissions ETX, the source node sends data packets to the downstream nodes through the candidate forwarding set, the nodes in the candidate forwarding set use the buffered data packets to provide encoding opportunities, and the downstream Nodes utilize buffered packets to provide decoding opportu...

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Abstract

The invention relates to the field of opportunistic routing selection in a wireless communication network, in particular to an opportunistic routing selection method based on network coding in a wireless network, which comprises the following steps that: a source node sends a data stream and selects a candidate forwarding set; the node in the candidate forwarding set obtains a coding opportunity and a data packet length according to the monitored information of the downstream node; the candidate node calculates a routing metric according to the node storage information and the information in the candidate forwarding set of the node; and the nodes in the candidate forwarding set set set forwarding priorities according to the routing metrics of the nodes so as to coordinately forward the data packets. When code forwarding is carried out, effective data transmission can be further increased through matching of the length of the data packet and searching of the coding opportunity, and therefore the network throughput and the transmission stability are improved.

Description

technical field [0001] The invention relates to the technical field of opportunistic routing under network coding, in particular to an opportunistic routing method based on network coding in a wireless network. Background technique [0002] A wireless multi-hop network is a wireless communication system constructed by nodes with wireless transceivers in a self-organizing manner. Each node in the network has the same function and status, there is no centralized node, and no network infrastructure is required. The wireless multi-hop network can quickly deploy the network in extreme environments, and the network has the advantages of flexible networking, rapid deployment, low cost, The advantages of strong scalability, invulnerability and robustness. Although wireless networks are easy to organize and transfer locations, there are still some restrictive features, such as multi-path effects, channel collisions, signal fading, and network environment instability, which can great...

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Application Information

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IPC IPC(8): H04W40/02
CPCH04W40/02Y02D30/70
Inventor 王练殷豪
Owner CHONGQING UNIV OF POSTS & TELECOMM
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