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Node diagnosis device and system

A technology for diagnosing devices and nodes, applied in the network field, can solve problems such as ineffective work, and achieve the effects of simple signaling and low identification complexity

Active Publication Date: 2021-01-26
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Usually in wireless systems using Carrier Sense Multiple Access / Collision Avoidance (Carrier Sense Multiple Access / Collision Avoidance, CSMA / CA) mechanism for channel access (such as Institute of Electrical and Electronics Engineers (IEEE) 802.11, 802.15.4, 802.15.6), there will be an exposed node problem. When the exposed node problem occurs, the mechanism of the Media Access Protocol (MAC), such as the CSMA / CA mechanism, cannot work effectively

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  • Node diagnosis device and system

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Experimental program
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Embodiment 1

[0054] Embodiment 1 of the present invention provides a node diagnosis method, which is applied to the control node side. Figure 8 is a schematic diagram of a node diagnosis method according to an embodiment of the present invention, such as Figure 8 As shown, the node diagnosis method includes:

[0055] Step 801, receiving notifications related to channel busyness reported by other nodes;

[0056] Step 802, after receiving the first notification related to channel busyness reported by the first node and the second notification related to channel busyness reported by the second node, and the first node and the second node are in different basic services When set (BasicService Set, BSS), send a control signal to the first node and the second node, so that the first node and the second node send test data packets respectively within the first time according to the control signal;

[0057] Step 803, receiving one or more first parameters related to the success rate of data tr...

Embodiment 2

[0084] Embodiment 2 of the present invention provides a node diagnosis method, the method is applied to the first node and / or the second node, wherein the first node and / or the second node is the network without the control described in Embodiment 1 Other ordinary nodes outside the node. Since the processes of the first node and the second node are the same or similar, the first node will be used as an example for description below.

[0085] Figure 9 is a schematic diagram of a node diagnosis method according to an embodiment of the present invention, such as Figure 9 As shown, the node diagnosis method includes:

[0086] Step 901, generating a first notification related to channel busyness;

[0087] Step 902, reporting the first notification to the control node;

[0088] Step 903, receiving the control signal issued by the control node; where the control signal is determined by the control node and also receives a second notification related to channel busyness reported...

Embodiment 3

[0106] Embodiment 3 of the present invention provides a node diagnosis method, which is further described from the perspective of the network, and the same content as Embodiments 1 and 2 will not be repeated.

[0107] Figure 10 is a schematic diagram of a node diagnosis method according to an embodiment of the present invention, such as Figure 10 As shown, the node diagnosis method includes:

[0108] Step 1001, a node in the network generates a notification related to channel busyness and reports the notification to the control node;

[0109] Wherein, the specific implementation manner of the node (for example, the first node or the second node) generating the notification and reporting it to the control node can refer to steps 901-902 in Embodiment 2, which will not be repeated here.

[0110] Step 1002, the control node receives a notification reported by one or more nodes;

[0111] Step 1003, the control node judges whether the first notification related to channel busy...

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Abstract

Embodiments of the present invention provide a node diagnosis device and system. The node diagnosis device includes: a first receiving unit, which is used to receive notifications related to channel busyness reported by other nodes; a first sending unit, which is used to receive the first notification reported by the first node at the first receiving unit notification and the second notification reported by the second node, and when the first node and the second node are in different basic service sets, send a control signal to the first node and the second node; the second receiving unit is used for receiving one or more first parameters reported by the first node, and receiving one or more second parameters reported by the second node; a first determination unit, which is used to determine one or more of the first parameters and one When one or more of the second parameters satisfy the predetermined condition, it is determined that the first node and the second node are exposed nodes. Through this embodiment, whether a certain node is an exposed node can be well identified, and the identification complexity is low, and the signaling is simple.

Description

technical field [0001] The embodiments of the present invention relate to network technologies, and in particular to a node diagnosis device and system in network fault diagnosis. Background technique [0002] In wireless networks, the exposed node problem, or exposed terminal problem, occurs when a node is prevented from sending packets to other nodes due to its neighbor's transmitter. figure 1 is a schematic diagram of exposed node scenarios in the existing network, such as figure 1 As shown, there are four nodes T1, R1, T2, R2 in the network. Among them, the receivers R1 and R2 are respectively outside the broadcast range of each other, and the transmitters T1 and T2 in the middle are respectively located within the broadcast range of each other, so that when data transmission occurs between T1 and R1, the carrier sense , T2 speculates that it will interfere with the data transmission of its neighbor T1, therefore, T2 is prevented from transmitting data to R2. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02H04W24/04H04W72/54
CPCH04W24/02H04W24/04H04W24/06H04W74/0816H04L43/16H04L43/50H04W72/541G06F11/1425H04W68/12
Inventor 易粟王昊范小菁王乐菲薛文倩松仓隆一
Owner FUJITSU LTD
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