Communication method, communication device and communication system

A communication device and communication path technology, applied in the field of communication, can solve problems such as difficult communication paths, easy frequency attenuation, poor self-adaptive ability, etc.

CN103312547AActive Publication Date: 2013-09-18HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-09-18

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Abstract

An embodiment of the invention discloses a communication method, a communication device and a communication system. The communication method includes dynamically detecting communication paths and dynamically maintaining a local routing table by each station in a power line carrier communication network, wherein the local routing table records at least one routing table item, each routing table item at least contains a through path for reaching an ultimate destination address, and each path contains a next-hop direct address; processes for dynamically detecting the communication paths include: generating a detecting message bringing a source address and the ultimate destination address to serve as a target message; at least taking stations corresponding to the through next-hop direct addresses for reaching the ultimate destination address as to-be-evaluated stations; at least screening an optimal communication station in the to-be-evaluated stations; at least sending the target message to the optimal communication station; taking the received detecting message and the target message when the detecting message is received; and executing a transmitting strategy.
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Description

technical field

[0001] The present invention relates to the technical field of communication, and more specifically, to a communication method, device and system. Background technique

[0002] In the power line carrier communication network, a centralized routing scheme is generally used to realize the communication between the concentrator and other sites: the concentrator manages the communication paths of the entire network in a unified manner, records the full path to each site, and the concentrator sends data to a certain site , the full path information will be added to the packet header.

[0003] However, because the power line network channel has the characteristics of time-varying, frequency attenuation and strong interference, there are serious defects in the unified management of the communication path of the whole network by the concentrator—when the power line network channel changes, the concentrator gets a new The communication path is very difficult and take...

Examples

Embodiment Construction

[0120] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0121] With the development of technology, low-voltage power line carrier communication technology has developed rapidly, and the huge low-voltage power line network provides a good foundation for communication. Figure 1a It shows the structure of the centralized reading system based on low-voltage power line carrier technology (also called power line carrier communication network). It can be seen that the concentrator 101 is located at the transformer of the c...