Time calibration method and device for broadband power line communication network

A broadband power line and communication network technology, applied in the field of timing methods and devices for broadband power line communication networks, can solve problems such as inaccurate timing, and achieve the effects of avoiding timing operations, improving timing efficiency, and low application costs

Inactive Publication Date: 2017-12-01
BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY +2
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  • Abstract
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Problems solved by technology

[0009] The purpose of the present invention is to provide a method and device for adjusting the time of a broadband

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  • Time calibration method and device for broadband power line communication network
  • Time calibration method and device for broadband power line communication network
  • Time calibration method and device for broadband power line communication network

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Embodiment Construction

[0042] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Unless expressly stated otherwise, throughout the specification and claims, the term "co...

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Abstract

The invention discloses a time calibration method and device in a broadband power line communication network. The method includes the steps of sending, to a subordinate node, a first packet including a first time that is the time for sending the first packet; receiving a response packet fed back by the subordinate node, the response packet including a second time and a third time; determining a fourth time when the response packet is received, and determining the link delay and processing delay according to the first time, the second time, the third time and the fourth time; and sending a second packet to the subordinate node at a fifth time, and instructing the subordinate node to perform time calibration processing according to the second packet which includes the fifth time, the link delay, and the processing delay. The method can accurately determine the link delay of the packet transmission and the processing delay of the lower node processing the packet, and by comprehensively considering the link delay and the processing delay, the lower node is allowed to complete the accurate time calibration according to the link delay and the processing delay.

Description

technical field [0001] The invention relates to the technical field of power line communication, in particular to a method and device for adjusting the time of a broadband power line communication network. Background technique [0002] At present, in the power consumption information collection system based on Power Line Communication (PLC), most of the time synchronization methods use a two-level synchronization method in which the master station synchronizes the time with the concentrator, and the concentrator performs time synchronization with the terminal communication nodes every day. time method. However, if the communication between the master station and the collection terminal is delayed due to transmission, or the failure of the collection terminal itself, there will be a large error in the clock of the energy meter. [0003] At present, there are two main solutions to the clock synchronization problem of the power consumption information collection system: [00...

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Application Information

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IPC IPC(8): H04B3/54H04J3/06
CPCH04B3/54H04J3/0638
Inventor 白晖峰王立城宋彦斌赵冲刘全春
Owner BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY
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