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An improved multipath method based on dsr protocol

A multi-path and protocol technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems such as low reliability, large network transmission delay, and network congestion.

Active Publication Date: 2018-08-31
成都电科智联科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the DSR protocol is a single-path routing protocol, and only one route can be obtained in a route discovery process.
The disadvantage of the single-path routing protocol is that the reliability is not high. Once some links in the route are disconnected, only the route discovery process can be started, which will lead to a large network transmission delay and a high packet loss rate.
In addition, for data packets with the same destination node, the source node always uses the same route to send, and the nodes in the routing line are always in a busy state, which will cause local network congestion

Method used

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  • An improved multipath method based on dsr protocol

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Embodiment Construction

[0017] Below we will further illustrate the present invention in conjunction with accompanying drawing.

[0018] A kind of multipath improvement method based on DSR agreement, comprises the following steps:

[0019] 1. Regarding the improvement of the data structure:

[0020] Add a flag variable flag to distinguish the number of forwarding times of the RREQ packet in the route application form item class, and the flag is initialized to 0 in the constructor of the class. This flag is used to indicate the number of times the RREQ packet is forwarded by this node. The update method is as follows: After the node forwards the RREQ packet sent by the source node, the value of the flag increases by 1.

[0021] Add the variable last_route that records the last used route in the route buffer class, and last_route is initialized to be empty. The function of this variable is to assist the route selection function, so that the route selected from the route buffer each time is diffe...

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Abstract

A multi-path improvement method based on the DSR protocol, including the improvement of the data structure and the improved routing discovery algorithm, compared with the DSR protocol, the protocol of the present invention can generate two routing lines in a routing discovery process, and alternately use The routing selection method of two routes can improve the local congestion of the network, improve the packet receiving rate and reduce the network delay.

Description

technical field [0001] The invention relates to the field of wireless ad hoc networks, in particular to an improved multipath method based on the DSR protocol. Background technique [0002] In recent years, wireless group organization networks have been widely used in many fields such as military defense, mobile office, and industrial control. Wireless ad hoc networks refer to networks in which communication nodes can move freely. Due to the instability of topology, wireless ad hoc networks require routing protocols to have the characteristics of quickly establishing routes and quickly adapting to changes in topology. Dynamic Source Routing (Dynamic Source Routing, DSR) protocol can well meet the requirements of mobile ad hoc networks and is widely used. However, the DSR protocol is a single-path routing protocol, and only one route can be obtained in a route discovery process. The disadvantage of a single-path routing protocol is that it is not very reliable. Once some li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/721H04L12/733H04W84/18H04L45/122
Inventor 李迅波郑亚飞王振林何长江
Owner 成都电科智联科技有限公司
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