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A Opportunistic Routing Method Based on Network Coding in Wireless Networks

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

Active Publication Date: 2022-06-03
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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  • A Opportunistic Routing Method Based on Network Coding in Wireless Networks
  • A Opportunistic Routing Method Based on Network Coding in Wireless Networks
  • A Opportunistic Routing Method Based on Network Coding in Wireless Networks

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Experimental program
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Embodiment Construction

[0026] (2) The node can always listen to the transmission situation of the neighbor node.

[0027] A slight adjustment to the above assumptions can be applied in an actual communication system.

[0039] The calculation of the forwarding priority of the present invention is jointly determined by the encoding opportunity and the length of the encoded data packet. edit

[0040] ETX(gp1,d)<=ETX(gp2,d)<=...<=ETX(gpn,d) (1)

[0042]

[0044]

[0045] P(i, gpl, k) represents the probability that the node k in the candidate forwarding set of the data packet pl can encode the forwarding.

[0047]

[0066] In some preferred embodiments, for some intermediate nodes, FIG. 6 shows the data packets of the preferred embodiment of the present invention

[0072] In the present invention, unless otherwise expressly specified and limited, the terms "installation", "arrangement", "connection", "fixation",

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Abstract

The present invention relates to the field of opportunistic routing in wireless communication networks, and in particular to a method for opportunistic routing based on network coding in a wireless network. The method includes sending a data stream from a source node and selecting a candidate forwarding set; the candidate forwarding set The node in the node obtains the encoding opportunity and the data packet length according to the information of the downstream node intercepted; the candidate node calculates the routing metric according to the information stored in the node and the information in the candidate forwarding set of the node; the candidate forwarding set in the The node sets the forwarding priority according to the routing metric of the node to coordinate forwarding data packets. When encoding and forwarding, the present invention can further increase the transmission of effective data by matching the length of data packets and searching for encoding opportunities, thereby improving the network throughput and transmission stability.

Description

An Opportunistic Routing Method Based on Network Coding in Wireless Networks technical field The present invention relates to the opportunity routing technology field under network coding, be specifically related to a kind of wireless network based on Opportunistic routing methods for network coding. Background technique A wireless multi-hop network is a wireless communication network constructed by nodes with wireless transceivers in an ad hoc manner. letter system. 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, fast deployment and low cost Inexpensive, scalable, invulnerable and robust. Although wireless networks are easy to organize and transfer locations easily, there are In some restrictive features, such as multipath effect, chann...

Claims

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Application Information

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