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Communication method and device

A communication method and technology of a communication device, applied in the field of communication, can solve problems such as poor compatibility, inability to efficiently utilize time-frequency resources of a wireless network, unsmooth scheduling IEEE1588 process, etc., to achieve the effect of improving user experience

Inactive Publication Date: 2019-10-18
HUAWEI TECH CO LTD
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Problems solved by technology

[0003] However, IEEE 1588 is a clock synchronization scheme designed for the application layer of wired networks. For future wireless communication networks, the IEEE 1588 synchronization scheme at the application layer is not compatible with the underlying protocols of wireless communication networks.
In addition, the IEEE 1588 synchronization scheme based on application layer data packets cannot efficiently utilize the time-frequency resources of the wireless network, and the data packet scheduling of the wireless network also causes the IEEE 1588 process to be unsmooth
Therefore, directly combining IEEE 1588 synchronization schemes with wireless networks cannot provide high-precision clock synchronization performance

Method used

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Embodiment Construction

[0098] The technical solution in this application will be described below with reference to the accompanying drawings.

[0099] The terms "component", "module", "system" and the like are used in this specification to refer to a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and / or a computer. By way of illustration, both an application running on a computing device and the computing device can be components. One or more components can reside within a process and / or thread of execution and a component can be localized on one computer and / or distributed between two or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. A component may, for example, b...

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Abstract

The invention provides a communication method and device. The method comprises: a terminal device receiving time information through a first channel, wherein the first channel is a broadcast channel and / or a control channel; wherein the time information comprises first time information and second time information, the first time information indicates a first moment when the network device sends the first reference signal, and the second time information indicates a second moment when the network device receives the second reference signal; according to the first moment, the second moment, thethird moment and the fourth moment, determining the time deviation between the terminal device and the network equipment, the third moment being the moment when the terminal device receives the firstreference signal, and the fourth moment being the moment when the terminal device sends the second reference signal. According to the time deviation correction clock, the time information is transmitted in the wireless system, so that the time information is periodically and accurately acquired for time correction, and the user experience is improved.

Description

technical field [0001] The present application relates to the field of communication, and more particularly, to a method and apparatus for time synchronization. Background technique [0002] The full name of the Institute of Electrical and Electronics Engineers (IEEE) 1588 protocol is "Precision Clock Synchronization Protocol Standard for Network Measurement and Control Systems", which defines a precision time protocol (precision time protocol, PTP), which Its basic function is to enable the distributed communication network to have strict timing synchronization, and the function of clock synchronization can be realized through the interaction of application layer data packets. In practical applications, IEEE1588 is a master-slave synchronization system. For example, in the synchronization process between network devices and terminal devices, network devices periodically publish time synchronization packets and timestamp information, and terminal devices obtain relevant tim...

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Application Information

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IPC IPC(8): H04W56/00H04J3/06
CPCH04J3/0638H04J3/0661H04J3/0682H04W56/001H04W56/004H04J3/06H04L7/00H04W56/00
Inventor 温容慧吕永霞宋兴华
Owner HUAWEI TECH CO LTD
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