A clock signal transmission method and device
A clock signal and clock output technology, applied in the field of communication, can solve the problems of high cost and no reserved clock source interface circuit, etc.
Active Publication Date: 2019-07-23
HUAWEI DIGITAL TECH SUZHOU
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Problems solved by technology
However, many Ethernet devices were shipped before the application of IEEE 1588 technology, so there is no reserved clock source interface circuit.
Therefore, if the above-mentioned IEEE 1588 technology is to be used in the existing network to realize clock synchronization of Ethernet devices, it is necessary to replace a large number of Ethernet devices in the existing Ethernet with devices with clock source interface circuits, and the cost is relatively high
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[0041] The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.
[0042] The clock signal transmission method, device, and system provided by the embodiments of the present invention can be applied to a process in which a clock source server transmits a clock source signal to a network device.
[0043] Please refer to figure 1 , Which shows a schematic diagram of the composition of a clock signal transmission system provided by an embodiment of the present invention. Such as figure 1 As shown, the clock signal transmission system 10 may include: a clock source connector 11 and a network device 12.
[0044] The clock source connector 11 is connected to the network device 12; specifically, the clock source connector 11 can be...
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The embodiment of the invention discloses a clock signal transmission method and equipment, which can provide IEEE 1588 synchronous clock signals for Ethernet devices without clock interfaces. The specific solution is: the network device determines that the first service interface among the multiple service interfaces of the network device is the clock master port; the pseudo service flow sent by the clock source connector is received through the first service interface, and the pseudo service flow includes the IEEE 1588 clock Information, the clock information includes frequency and time; the clock information is extracted from the pseudo service flow for clock synchronization. Wherein, the clock information in the pseudo service flow is obtained by the clock connector from the received PTP-based clock source signal; the clock source connector is plugged into the first service interface.
Description
Technical field [0001] The embodiments of the present invention relate to the field of communication technology, and in particular to a clock signal transmission method and device. Background technique [0002] With the development of the third generation mobile communication technology (English: the 3th Generation mobile communication technology, abbreviation: 3G) and the fourth generation mobile communication technology (English: the 4th Generation mobile communication technology, abbreviation: 4G), the time synchronization requirements of the communication network Higher and higher, this requires clock synchronization of the communication network. [0003] Precision Time Protocol (English: Precision Time Protocol, abbreviated as: PTP) is a protocol for clock synchronization of standard Ethernet equipment, that is, time and frequency synchronization. It is also called Ethernet synchronization technology and the Institute of Electrical and Electronics Engineers (English: Institut...
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IPC IPC(8): H04J3/06
CPCH04J3/0638H04J3/0667H04J3/0697
Inventor 刘尧周建兵马朝阳倪刚
Owner HUAWEI DIGITAL TECH SUZHOU