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Method, device and system for acquiring data transmission time

A technology for transmitting time and obtaining data, which is applied in the field of communication and can solve problems such as high cost

Active Publication Date: 2021-03-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] A synchronization circuit for synchronization with Beidou satellite or GPS needs to be deployed in the first device, and the timing signal of Beidou satellite or GPS is received through the synchronization circuit. The synchronization circuit also needs to be deployed in the second device, and the cost is relatively high

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  • Method, device and system for acquiring data transmission time
  • Method, device and system for acquiring data transmission time
  • Method, device and system for acquiring data transmission time

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Embodiment Construction

[0041] The PLC communication network can be a power transmission network or a power distribution network, etc. The power transmission network is a power transmission network that connects power plants and substations and connects substations and substations, and is used for long-distance transmission of electric energy generated by power plants. For example, see figure 1 As shown in the transmission network, the transmission network includes facilities such as a power plant a and multiple substations b. The power plant a and the plurality of substations b are connected through power lines.

[0042] The power distribution network includes multi-level power distribution equipment, which is a network that receives power from the transmission network and distributes power to various power-consuming equipment through the multi-level power distribution equipment. For example, see figure 2 or image 3 The power distribution network is shown, and the power distribution network in...

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Abstract

An embodiment of the invention discloses a method, device and system for obtaining data transmission time, and belongs to the field of communication. The method comprises the steps that first equipment sends a first message to second equipment, and a first sending timestamp of the first message is acquired; the first device receives a second message corresponding to the first message sent by the second device, and obtains a first receiving timestamp of the second message; the first equipment calculates a second receiving timestamp of the second equipment for receiving the first message and a second sending timestamp of the second equipment for sending the second message according to the timing frequency of the second equipment; the first equipment calculates the data transmission time between the first equipment and the second equipment according to the first sending timestamp, the first receiving timestamp, the second sending timestamp and the second receiving timestamp. According tothe invention, the cost can be reduced.

Description

technical field [0001] The present application relates to the communication field, and in particular to a method, device and system for obtaining data transmission time. Background technique [0002] Power line communication (power line communication, PLC) may use a power line transmitting current as a communication carrier. In this way, in the PLC network, the sending end can load the carrier signal carrying data to the power line, and transmit the carrier signal through the power line. The receiving end uses a dedicated demodulator to separate the carrier signal from the power line, and demodulates the data from the carrier signal. Sometimes it is necessary to measure the data transmission time between two devices in the PLC network. For example, the two devices may be two substations, sometimes it is necessary to measure the data transmission time between the two substations, and calculate the length of the power line between the two substations based on the data transm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/46H04B3/54
CPCH04B3/46H04B3/54H04J3/0667H04B3/542H04B3/546H04J3/0661
Inventor 张锡权郭俊张伟贤
Owner HUAWEI TECH CO LTD