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Multi-subnet fusion method for power line communication based on subnet volume

A technology of power line communication and sub-network integration, applied in distribution line transmission systems, electrical components, wired transmission systems, etc., can solve the problems of node conflict, unfavorable node management and maintenance, long time, etc., to reduce the probability of conflict, improve Integrate efficiency and achieve the effect of consistency

Inactive Publication Date: 2017-11-17
HARBIN INST OF TECH
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AI Technical Summary

Problems solved by technology

However, the main research at this stage is the networking of a single subnet in a certain area, and there are few studies on the integration of multiple subnets in different areas. The main reason is that the multi-subnet integration mechanism is relatively complicated, and there are still the following problems at this stage:
At this stage, it takes a long time to converge multiple master nodes into a single master node, and the efficiency is low, which is not conducive to the management and maintenance of other nodes in the network;
[0005] 3. At the current stage, in the process of mutual integration between subnets, since the common nodes between subnets will receive beacon frames sent by multiple nodes, conflicts will occur between nodes in the process of receiving beacon frames, resulting in multiple subnets. It is difficult to integrate with each other

Method used

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  • Multi-subnet fusion method for power line communication based on subnet volume
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  • Multi-subnet fusion method for power line communication based on subnet volume

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specific Embodiment approach 1

[0033] Specific embodiments 1. Power line communication multi-subnet fusion method based on subnet volume. In the low-voltage power line quasi-spider-web logic topology, since nodes are distributed in different areas, multiple quasi-spider-web fractal networking methods will be formed. spider web, and the network topology in each quasi-spider web is as follows figure 1 and figure 2 shown.

[0034] The invention emphatically elaborates the mutual fusion process among multiple quasi-spider webs. In order to effectively illustrate the fusion process between multi-quasi spider webs, the image 3 Quasi-spider web 1 and quasi-spider web 2 in the example are described as examples, such as Figure 4 Shown:

[0035] Figure 4 middle:

[0036] Node sends unicast counter: node_unicast_count1=0;

[0037] Node sends broadcast counter: node_broadcast_count2=0;

[0038] 1. When the nodes in area 1 and area 2 use the quasi-spider web hierarchical fractal method to complete the networ...

specific Embodiment

[0043] In the low-voltage power line network, since the nodes are distributed in different areas, multiple quasi-spider subnets will be formed by using the quasi-spider fractal networking method. Since sub-nodes in different quasi-spider subnets will periodically send beacon frames to nodes within their communication range, if a sub-node in another quasi-spider subnet receives the beacon frame, the node needs to compare the The size of the spider web MAC address is used to determine the fusion direction of the quasi-spider web. In the present invention, it is defined that the direction of the quasi-spider subnet with a large master node MAC is fused, and then the quasi-spider subnet with a small master node MAC needs to be disbanded, and the disbanded nodes will join the network one by one by registering as a new node. Until all nodes join the network.

[0044] According to the above process, the process of mutual fusion between multiple quasi-spider webs can be realized.

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Abstract

The invention provides a power line communication multi-subnet fusion method based on subnet mass, and relates to a power line communication multi-subnet fusion method. The power line communication multi-subnet fusion method solves the problem that an existing method for correcting frequency shift among multi subnets is not avail to mutual fusion among multi subnets and is low in efficiency. In the low voltage power line network, the power line communication multi-subnet fusion method can utilize a standard spider web fractal networking method to form a plurality of standard sub spider webs as the nodes are distributed in different areas. As the sub nodes in different standard sub spider webs send beacon frames to the nodes in the communication range at regular intervals and if the sub nodes in another standard sub spider web receive the beacon frame, the node needs to compare the size of the MAC address of the standard sub spider webs so as to perform fusion based on the principle for following the direction of the standard sub spider web in which the MAC for the main node is larger; the standard sub spider web in which the MAC for the main node is smaller, is dismantled; and the nodes after being dismantled join the network one by one as new nodes through registration until all the nodes join the network. The power line communication multi-subnet fusion method based on subnet mass is suitable for a power line communication multi-subnet fusion field.

Description

technical field [0001] The invention relates to a multi-subnet fusion method for power line communication. Background technique [0002] With the continuous development of network fusion technology, it will become a research hotspot to effectively integrate multiple subnets into a single network in low voltage power line network. However, the main research at this stage is the networking of a single subnet in a certain area, and there are few studies on the integration of multiple subnets in different areas. The main reason is that the multi-subnet integration mechanism is relatively complicated, and there are still the following problems at this stage: [0003] 1. Since the frequency among nodes in a subnet is the same, but the frequency among multiple subnets is different from each other. At this stage, the frequency offset between multiple subnets is corrected, and the implementation mechanism is relatively complicated, which is not conducive to the mutual integration of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B3/54H04B3/56
CPCH04B3/544H04B3/56
Inventor 刘晓胜崔莹刘佳生姚友素张芮刘浩徐殿国
Owner HARBIN INST OF TECH
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