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Fault diagnosis method and device

A fault diagnosis and fault technology, applied in the field of communication, to achieve the effect of improving communication overhead and diagnosis reliability

Active Publication Date: 2015-05-27
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is: for each suspected fault, once the diagnosis process is triggered, it is necessary to build a complete diagnosis tree and collect the evidence of all relevant nodes through the diagnosis tree

Method used

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  • Fault diagnosis method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The embodiment of the present invention provides a fault diagnosis method, which is applied to nodes in an Ad hoc network. figure 2 Is the flow chart of the method, please refer to figure 2 , The method includes:

[0032] Step 201: The node sends a first survival message, starts a timer for the suspected node, and stores the survival node corresponding to the first survival message and the information of the suspected node in the survival message table. The first survival message Contains information about the surviving node and the suspected node, the surviving node is the node;

[0033] Step 202: If within the time period of the timer for the suspected node, a second survival message broadcast by the suspected node is received, the second survival message includes the suspected node as the surviving node and the node as the surviving node Information of the suspected node, it is determined that the link between the node and the suspected node is faulty; otherwise, it is ...

Embodiment 2

[0051] The embodiment of the present invention also provides a fault diagnosis method, which is applied to nodes in the Ad hoc network. Figure 4 Is the flow chart of the method, please refer to Figure 4 , The method includes:

[0052] Step 401: When receiving a survival message (referred to as the third survival message in this embodiment) sent by other nodes, determine the local (ie, the surviving node and the suspected node) according to the information contained in the surviving message Whether the node) is the destination node of the survival message;

[0053] Step 402: If the node is not the destination node of the received survival message, the node forwards the received survival message according to the information contained in the received survival message;

[0054] Step 403: If the node is the destination node of the received survival message, the node performs fault diagnosis and / or processing according to the information contained in the received survival message.

[0055...

Embodiment 3

[0112] The embodiment of the present invention provides a node in an Ad hoc network. Figure 8 Is a schematic diagram of the composition of the node, please refer to Figure 8 , The node 800 includes: a sending unit 801, a storage unit 802, and a first determining unit 803, where:

[0113] The sending unit 801, which sends a first survival message to start a timer for the suspected node, the first survival message contains information about the surviving node and the suspected node, and the surviving node is the node;

[0114] The storage unit 802, which stores the information of the surviving node corresponding to the first surviving message and the suspected node in the surviving message table after the sending unit 801 sends the first survival message

[0115] The first determining unit 803, when receiving the second survival message broadcasted by the suspected node within the timing time of the timer for the suspected node, if the second survival message contains the suspected no...

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PUM

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Abstract

The embodiment of the invention provides a fault diagnosis method and a device. The method comprises the steps that a node transmits a first surviving message and starts a timer for a suspected node, wherein the first surviving message comprises information of a surviving node and the suspected node, and the surviving node is the node; if a second surviving message broadcasted by the suspected node is received within the timing time of the timer for the suspected node, a link fault between the node and the suspected node is determined, wherein the second surviving message comprises information of the suspected node serving as the surviving node and the node serving as the suspected node; or else, a suspected node fault or a suspicious node fault is determined. According to the method and the device, fault diagnosis is achieved without inquiring a state of the suspected node for the node or collecting evidence from other neighbor nodes of the suspicious fault node, so that communication overhead and diagnosis reliability are improved.

Description

Technical field [0001] The present invention relates to the field of communications, in particular to a fault diagnosis method and device. Background technique [0002] In wireless networks, link and node status are important parameters for the reliability of the network. Obtaining these statuses timely and accurately is one of the functions of network maintenance. Traditional network fault diagnosis requires the establishment of a fault diagnosis tree composed of the neighbor nodes of the suspected node. The status of the suspected node is determined by collecting the link status (evidence) from the suspected node to all neighboring nodes and fusing these states. The judgment. This method is called fault diagnosis based on active inquiry. The disadvantage of this method is that for each suspected fault, once the diagnosis process is triggered, a complete diagnosis tree needs to be established, and evidence of all related nodes is collected through the diagnosis tree. In some...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26
Inventor 底欣张兆宇奥琛田军
Owner FUJITSU LTD
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