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A power line carrier communication method

A technology of power line carrier and communication method, which is applied in the direction of distribution line transmission system, signal transmission/reception through power distribution, transmission/reception of signal by adding signal to wave, etc., which can solve the harsh channel environment and is not enough to fight against Power line and other problems, to achieve reliable communication, reduce network failure rate, and maintain normal operation

Active Publication Date: 2017-05-10
STATE GRID CORP OF CHINA +4
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the performance gains obtained by adding redundancy are not sufficient to combat the harsh channel environment of power lines

Method used

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  • A power line carrier communication method
  • A power line carrier communication method
  • A power line carrier communication method

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with accompanying drawing.

[0049] The present invention provides a power line carrier communication method, which includes a preamble-based low-speed robust communication method, the robust communication method provides an auxiliary method when the conventional communication mode cannot provide effective communication in a harsh channel environment communication mode.

[0050] Power line carrier communication needs to make two communication nodes complete time synchronization on one or more frequencies. In order to achieve the above purpose, one node needs to send a beacon signal on one or more frequencies, and the other node needs to detect the beacon signal. The node that sends the beacon signal is called the master station, and the other node is called the slave station. Data packets are transferred between the master and slave after synchronization.

[0051] The method of the present invention ...

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Abstract

Provided in the present invention is a power-line carrier communication method, comprising a preamble sequence-based low-speed robust communication method. The robust communication method provides an auxiliary communication mode when effective communication cannot be provided by a conventional communication mode in a harsh channel environment. Based on a preamble signal and a processing method therefor, the method allows timing and synchronization in a packet-switched data network. When normal communication cannot be carried out under the conventional communication mode, communication via the robust communication mode is attempted. The robust communication mode provided in the present invention is capable of providing low-speed and reliable communication when the conventional communication mode cannot work reliably, thus satisfying basic communication requirements of a network, and reducing network failure rate.

Description

technical field [0001] The invention relates to a method for connecting medium and low voltage power lines to the network field, in particular to a power line carrier communication method. Background technique [0002] The application of typical smart grids in medium and low voltage access networks generally adopts a centralized master-slave network architecture. To facilitate the synchronization and establishment of a communication connection between the slave station and the master station, the master station usually defines a Media Access Control (MAC) frame structure and periodically sends a beacon signal in each MAC frame. In addition, each physical layer (Physical, PHY) data block usually begins with a preamble signal for synchronization and timing. [0003] Since the reliability of the preamble is much stronger than that of the data, successfully detecting the preamble signal is a sufficient condition for successfully detecting the following data symbols, and the rob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B3/54
CPCH04B3/54H04B2203/5416
Inventor 刘伟麟安春燕李建岐高鸿坚杨冰赵勇赵涛陆阳陶峰褚广斌马平
Owner STATE GRID CORP OF CHINA
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