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RPL routing method and related device

A routing and unified technology, applied in the field of network communication, can solve the problem of high occupancy rate of node buffer area, achieve the effect of reducing control overhead and reducing the number of transmissions

Active Publication Date: 2019-09-13
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of this application is to provide a RPL routing method, a RPL routing system, a computer-readable storage medium and a network server, which solve the problem of high occupancy rate of the node buffer area caused by too many DAO-ACK control messages

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  • RPL routing method and related device
  • RPL routing method and related device

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Embodiment Construction

[0056] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0057] The following four kinds of control information in LIN are first introduced. The following four kinds of control messages are mainly used in the process of constructing a destination-oriented directed acyclic graph (Destination Oriented Directed Acyclic Graph, DODAG) in LLN. The following four kinds of control messages are aimed at functions ar...

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Abstract

The invention provides an RPL routing method which comprises the following steps: after a root node receives a DAO message, generating a corresponding DAO-ACK message; aggregating all the DAO-ACK messages needing to pass through the same link within a preset time to obtain a total DAO-ACK message; sending a total DAO-ACK message in a multicast mode; the common node reading all destination node information in the total DAO-ACK message; and if the child node of the DAO-ACK message exists in the destination node information contained in the total DAO-ACK message, reserving the address of the child node in the destination address field, and forwarding the total DAO-ACK message. According to the method, the sending number of the DAO-ACK control messages is reduced, so that the control overheadis reduced. The invention further provides an RPL routing system, a computer readable storage medium and a network server, which have the above beneficial effects.

Description

technical field [0001] The present application relates to the field of network communication, in particular to an RPL routing method and related devices. Background technique [0002] At present, in the non-storage mode of the RPL routing protocol, although ordinary nodes do not store and maintain the routing table, as the network scale expands, the return of a large number of DAO messages will cause network congestion, reduce network throughput, and a large number of data packets Accumulated at the root node, resulting in packet loss in the node replacement area, forcing DAO messages to be retransmitted. The literature proposes an improved scheme, through the improvement of the Delay DAO timer, to control the forwarding of DAO messages and minimize the possibility of network congestion. [0003] The improved algorithm includes two main sub-mechanisms, node congestion detection and adjustment of Delay DAO timer. The algorithm uses two congestion detection methods: congesti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04L12/801H04L29/06
CPCH04L1/1607H04L1/1642H04L47/10H04L47/15H04L69/06Y02D30/50
Inventor 肖勇李鹏金鑫张乐平罗奕
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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