Communication method, device and system
A communication device and communication path technology, applied in the field of communication, can solve the problems of strong interference, difficult communication path, poor adaptive ability, etc.
Active Publication Date: 2016-06-29
HUAWEI TECH CO LTD
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[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 takes a long time, so the adaptive ability is poor, it cannot meet real-time communication, and the effectiveness is very poor
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[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...
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The embodiment of the invention discloses a communication method, device and system. The method includes: each station in the power line carrier communication network dynamically detects the communication path and dynamically maintains a local routing table; the local routing table records at least one routing entry, and each routing entry at least includes The path includes the next hop direct address; the dynamic detection communication path includes: generating a detection message as a target message, and the detection message carries an active source address and a final destination address; at least the final destination address will be reached The site corresponding to the next hop direct address via which the destination address passes is used as the site to be evaluated; at least the optimal communication site is selected from the sites to be evaluated; at least the target message is sent to the optimal communication site; When receiving the detection message, take the received detection message as the target message; execute the forwarding strategy.
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...
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IPC IPC(8): H04L12/24H04L12/26H04L12/741H04L45/74
Inventor 徐德超杜彬
Owner HUAWEI TECH CO LTD