Time service method, terminal device and network device

A technology of terminal equipment and network equipment, which is applied in the field of embodiments, can solve problems such as mobility restrictions, difficulty in post-maintenance, and failure to consider signal transmission delay issues, and achieve the goals of reducing timing errors, information interaction, and transmission overhead Effect

Active Publication Date: 2018-07-31
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, TSN is based on wired Ethernet technology, and industrial robots need to be connected to Ethernet cables for production operations
Industrial robots based on TSN technology have two shortcomings: first, the construction and deployment of wired networks are complex, and subsequent maintenance is also difficult; second, industrial robots are limited in mobility because they need to connect to Ethernet cables
This timing method does not consider the delay problem in the signal transmission process, so that there is a delay in signal propagation and a timing error

Method used

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  • Time service method, terminal device and network device
  • Time service method, terminal device and network device
  • Time service method, terminal device and network device

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Embodiment Construction

[0090] The technical solution in this application will be described below with reference to the accompanying drawings.

[0091] figure 1 is a schematic diagram of an application scenario of an embodiment of the present invention.

[0092] The embodiment of the present invention can be applied to a cellular network communication system in which terminals require absolute time service. The system may include at least one network device and at least one terminal device, wherein some or all of the at least one terminal device requires absolute time service. . For example, if figure 1 As shown, the embodiment of the present invention can be applied to a cellular network communication system including two terminal devices requiring absolute time service.

[0093] It should be understood that the embodiments of the present invention will be described by taking a cellular network communication system as an example, but the present invention is not limited thereto. That is to say, ...

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Abstract

Embodiments of the invention provide a time service method, a terminal device and a network device. The method comprises the steps that: the terminal device determines a first moment of a first downlink message, and determines a second moment of the first downlink message; the terminal device determines a third moment of a first uplink message, and determines a fourth moment of the first uplink message; and the terminal device determines the time deviation between the terminal device and the network device according to the first moment, the second moment, the third moment and the fourth moment. According to the method provided in the embodiments of the invention, the terminal device takes the uplink and downlink propagation time delay into consideration, thereby enabling a time service ofabsolute time for the terminal server by using the first moment and the second moment of the first downlink message as well as the third moment and the fourth moment of the first uplink message, and effectively reducing errors on the time service.

Description

technical field [0001] The embodiments of the present invention relate to the field, and more particularly, to a timing method, a terminal device, and a network device. Background technique [0002] With the development of industrial automation, more and more industrial robots are used in industrial production. In many scenarios, industrial robots need to work together. Collaborative operation requires information interaction between industrial robots. In addition to information interaction, high-precision absolute time synchronization is also required between robots in order to work together. [0003] In industrial scenarios, the communication of industrial robots mainly adopts time sensitive network (TSN) technology. TSN can provide communication services as well as timing services for robots. [0004] However, TSN is based on wired Ethernet technology, and industrial robots need to connect Ethernet cables for production operations. Industrial robots based on TSN tech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00
CPCH04W56/001H04W56/0055H04W56/0015H04W56/0065H04W56/003H04W56/0045
Inventor 高峰于光炜于峰张武荣
Owner HUAWEI TECH CO LTD
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