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Communication method, communication program, and node device

A communication method and node technology, applied in the field of communication, can solve the problems of delay, longer time spent, complex frame forwarding and processing, etc.

Inactive Publication Date: 2019-01-01
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the number of node devices that can be the forwarding destination of the frame is large, the node device performs processing for determining the forwarding destination of the frame, so the forwarding process of the frame becomes complicated.
In addition, if the path determination process becomes complicated, it will take longer to determine the path, and delays may occur.

Method used

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  • Communication method, communication program, and node device
  • Communication method, communication program, and node device
  • Communication method, communication program, and node device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach ＞

[0084] Hereinafter, it is divided into the case where the sub-gateway is newly set and the case where the sub-gateway is changed due to the increase or decrease of the node device 10, and an example of the setting method of the sub-gateway will be described.

[0085] [Settings of sub-gateway]

[0086] Figure 8 It is a diagram explaining an example of the setting method of the sub-gateway. in Figure 8 In the example, cluster C1 and cluster C7 are adjacent. Cluster C1 includes nodes N1 to N5, and cluster C7 includes nodes N6 to N8. By transmitting and receiving Hello frames with adjacent nodes, it is recognized that a node device capable of receiving Hello frames from node devices included in the adjacent cluster is a boundary node. in Figure 8 In the example of (a), the nodes N3 to N6 and N8 can become boundary nodes. Figure 8 In, the nodes that can become boundary nodes are surrounded by dotted lines. The boundary node determines the main cluster by comparing the cluster ID ...

no. 2 Embodiment approach ＞

[0262] As a second embodiment, a case will be described where the node device 10 participating in the ad hoc network determines whether the adjacent node device 10 has a failure, and if a failure is detected, the sub-gateway is dynamically changed.

[0263] In the second embodiment, the border node in the master-side cluster monitors the interval of receiving Hello frames from the master node to determine whether the master node has a failure. In the case of a failure of the dominant node, the boundary node in the primary cluster changes the dominant node. For example, the border node that detects the failure of the dominant node sends a Hello frame to the neighboring node to designate its own node as the dominant node to change the dominant node.

[0264] The leading node determines whether the primary-side sub-gateway fails by detecting the interval of sending Hello frames from the primary-side sub-gateway. If the master node detects the failure of the sub-gateway on the main si...

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PUM

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Abstract

The present invention relates to a communication method, a communication program, and a node device. Make inter-cluster communication more efficient. The selection means is selected from the first group. The first group is a group of node devices located in the first cluster and capable of communicating with node devices in the second cluster adjacent to the first cluster. The selection device transmits and receives a notification frame with an adjacent node device, and the notification frame notifies the identifier of the node device included in the first group. The selection means selects from the first group a first relay device that relays a relay frame used for communication between a node device in the first cluster and a node device in the second cluster. The first relay device determines the node device adjacent to the first relay device among the node devices included in the second group as the second relay device, and the second relay device relays the relay to the node devices in the second cluster. frame. The second group is a group of node devices located in the second cluster and capable of communicating with node devices in the first cluster.

Description

Technical field [0001] The present invention relates to communication performed in a network including a plurality of node devices. Background technique [0002] Node devices participating in the ad hoc network can form a network by sending and receiving Hello frames (hello frames) with other node devices. For example, node A belonging to a certain self-organizing network generates a Hello frame that includes path information held by node A, and broadcasts it periodically. Node B receiving the Hello frame compares the path information held by Node B with the information contained in the Hello frame, and obtains the path information that Node B does not hold from the Hello frame. [0003] If the number of node devices included in the ad hoc network becomes larger, such as figure 1 As shown, sometimes the self-organizing network is divided into multiple clusters. figure 1 The black circle indicates the node device. in figure 1 In the example, the self-organizing network is divided ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/02H04W84/18
CPCH04W40/02H04W88/04H04L67/10G06F11/2033G06F2201/85H04L67/60
Inventor 曾根田达也山本哲西本教人岩尾忠重
Owner FUJITSU LTD