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A device and method for optimizing routing failure using modified pathless DAO signaling

A routing and path technology, applied in the field of pathless DAO signaling to optimize routing failure, to achieve the effect of reducing control overhead, improving routing failure efficiency, and improving routing failure

Active Publication Date: 2021-06-22
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0032] The above disadvantages of existing mechanisms for NPDAO messaging are only intended to provide an overview of some of the problems with traditional systems / mechanisms / techniques and are not exhaustive

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  • A device and method for optimizing routing failure using modified pathless DAO signaling
  • A device and method for optimizing routing failure using modified pathless DAO signaling
  • A device and method for optimizing routing failure using modified pathless DAO signaling

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Embodiment Construction

[0084] The technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0085] The invention can be implemented in numerous ways, including as a process, an apparatus, a system, a composition of matter, a computer readable medium such as a computer readable storage medium, or a computer network where program instructions are transmitted over optical or electronic communication links. In this specification, these implementations, or any other form that the invention may take, may be referred to as techniques. In general, the order of steps i...

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Abstract

An apparatus and method for optimizing routing failure using modified pathless DAO signaling are disclosed. According to the present invention, a node that switches its current parent node is used to send a regular Directed Acyclic Graph DODAG Advertisement Object DAO message. With varying signaling, the common ancestor node generates an NPDAO on behalf of the switch node when it receives an updated DAO from an alternate path. The common ancestor node provided by the present invention multiplexes the PathSequence in the conventional DAO, wherein the NPDAO is generated based on the conventional DAO. The common ancestor node detects the routing anomaly through the next hop mismatch when receiving the DAO, so as to generate the NPDAO on behalf of the target node. Instead of other DAO messages moving upstream in a conventional way, the pathless DAO moves downstream along the previous path. The present invention provides a new signaling mechanism for limiting routing failures in the network.

Description

technical field [0001] The inventive subject matter described herein relates generally to routing packets in communication networks, and more particularly to optimizing routing failures with modified pathless DAO signaling. Background technique [0002] The Internet of Things (IoT) enables all available general-purpose devices / appliances and sensors / actuators in the network to be connected to the Internet, so that there can be better control in monitoring and command at any time and any place these devices. An example is building automation, where all sensors (fire sensors, temperature sensors, etc.), light fixtures, room curtains, door locks are connected to the internet and can be controlled remotely / locally with a mobile app or any other convenient device. [0003] Low Power and Lossy Networks (LLN) is a network composed of spatially distributed autonomous and resource-constrained sensors / actuators for monitoring physical or environmental conditions such as temperature, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/24H04W84/18H04L45/121H04L45/02H04L45/24H04L45/28
CPCH04W84/18H04L45/02H04L45/123H04L45/22H04L45/28H04L45/48G06F16/9024H04L45/021H04L45/121H04L45/26
Inventor 拉胡尔·阿尔温德·贾达夫拉比·纳拉扬·萨胡曹振
Owner HUAWEI TECH CO LTD
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