CN113497663A - Distributed network architecture and time synchronization method thereof - Google Patents
Distributed network architecture and time synchronization method thereof Download PDFInfo
- Publication number
- CN113497663A CN113497663A CN202110590618.8A CN202110590618A CN113497663A CN 113497663 A CN113497663 A CN 113497663A CN 202110590618 A CN202110590618 A CN 202110590618A CN 113497663 A CN113497663 A CN 113497663A
- Authority
- CN
- China
- Prior art keywords
- time
- management controller
- bus management
- distributed network
- local time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004458 analytical method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0658—Clock or time synchronisation among packet nodes
- H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0677—Localisation of faults
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer And Data Communications (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
The application belongs to the technical field of time synchronization design of a distributed network architecture, and relates to the distributed network architecture, which comprises the following steps: the distributed network comprises a bus management controller and a plurality of network node machines; wherein: the bus management controller distributes a time message corresponding to the local time of the bus management controller; each network node machine receives the time information distributed by the bus management controller, updates the local time to the corresponding time, and generates a corresponding time stamp according to the local time. Furthermore, a method of time synchronization for a distributed network is related, comprising: a bus management controller in the distributed network distributes time information corresponding to local time of the bus management controller; each network node machine in the distributed network receives the time message distributed by the bus management controller, updates the local time to corresponding time, and generates corresponding time stamp according to the local time.
Description
Technical Field
The application belongs to the technical field of distributed network architecture time synchronization design, and particularly relates to a distributed network architecture and a time synchronization method thereof.
Background
With the development of the technology, the network of the aircraft-mounted system is increasingly complex, wherein the realization of a certain function from a sensor to a calculation control unit to an actuation part can be completed only by the joint participation of a plurality of node devices, and when a fault occurs and fault analysis is carried out, because a unified clock is not arranged among the node devices, the time among the node devices is not unified, the occurrence moment of the fault is difficult to determine, the accurate positioning of the fault is difficult to realize, and the reliability and the safety of the aircraft-mounted system are influenced.
The present application has been made in view of the above-mentioned technical drawbacks.
It should be noted that the above background disclosure is only for the purpose of assisting understanding of the inventive concept and technical solutions of the present invention, and does not necessarily belong to the prior art of the present patent application, and the above background disclosure should not be used for evaluating the novelty and inventive step of the present application without explicit evidence to suggest that the above content is already disclosed at the filing date of the present application.
Disclosure of Invention
It is an object of the present application to provide a distributed network architecture and a time synchronization method thereof to overcome or alleviate technical deficiencies of at least one aspect known to exist.
The technical scheme of the application is as follows:
one aspect provides a distributed network architecture comprising:
the distributed network comprises a bus management controller and a plurality of network node machines; wherein:
the bus management controller distributes a time message corresponding to the local time of the bus management controller;
each network node machine receives the time information distributed by the bus management controller, updates the local time to the corresponding time, and generates a corresponding time stamp according to the local time.
According to at least one embodiment of the present application, in the distributed network architecture, the bus management controller distributes a time message corresponding to its local time, specifically:
the bus management controller distributes the time message corresponding to its local time in the form of a broadcast message.
According to at least one embodiment of the present application, in the distributed network architecture, the bus management controller periodically distributes the time message corresponding to the local time of the bus management controller;
each network node machine receives the time information periodically distributed by the bus management controller, updates the local time to the corresponding time, and generates a corresponding time stamp according to the local time.
According to at least one embodiment of the present application, in the distributed network architecture described above, the local time of the bus management controller is accumulated at a resolution of 20 us.
According to at least one embodiment of the present application, in the distributed network architecture described above, the local time of each network node machine is accumulated according to a resolution of 20 us.
In another aspect, a distributed network time synchronization method is provided, including:
a bus management controller in the distributed network distributes time information corresponding to local time of the bus management controller;
each network node machine in the distributed network receives the time message distributed by the bus management controller, updates the local time to corresponding time, and generates corresponding time stamp according to the local time.
According to at least one embodiment of the present application, in the above method for time synchronization of a distributed network, a bus management controller in the distributed network distributes a time message corresponding to its local time, specifically:
a bus management controller in a distributed network distributes time messages corresponding to its local time in the form of broadcast messages.
According to at least one embodiment of the present application, in the above-mentioned distributed network time synchronization method, the bus management controller periodically distributes the time message corresponding to its local time;
each network node machine receives the time information periodically distributed by the bus management controller, updates the local time to the corresponding time, and generates a corresponding time stamp according to the local time.
According to at least one embodiment of the present application, in the distributed network time synchronization method, the local time of the bus management controller is accumulated according to a resolution of 20 us.
According to at least one embodiment of the present application, in the distributed network time synchronization method, the local time of each network node machine is accumulated according to a resolution of 20 us.
Drawings
Fig. 1 is a schematic diagram of a distributed network architecture provided by an embodiment of the present application;
fig. 2 is a flowchart of a distributed network time synchronization method provided in an embodiment of the present application;
wherein:
1-a bus management controller (1); 2-network node machine.
For the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; further, the drawings are for illustrative purposes, and terms describing positional relationships are limited to illustrative illustrations only and are not to be construed as limiting the patent.
Detailed Description
In order to make the technical solutions and advantages of the present application clearer, the technical solutions of the present application will be further clearly and completely described in the following detailed description with reference to the accompanying drawings, and it should be understood that the specific embodiments described herein are only some of the embodiments of the present application, and are only used for explaining the present application, but not limiting the present application. It should be noted that, for convenience of description, only the parts related to the present application are shown in the drawings, other related parts may refer to general designs, and the embodiments and technical features in the embodiments in the present application may be combined with each other to obtain a new embodiment without conflict.
In addition, unless otherwise defined, technical or scientific terms used in the description of the present application shall have the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer", and the like used in the description of the present application, which indicate orientations, are used only to indicate relative directions or positional relationships, and do not imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and when the absolute position of the object to be described is changed, the relative positional relationships may be changed accordingly, and thus, should not be construed as limiting the present application. The use of "first," "second," "third," and the like in the description of the present application is for descriptive purposes only to distinguish between different components and is not to be construed as indicating or implying relative importance. The use of the terms "a," "an," or "the" and similar referents in the context of describing the application is not to be construed as an absolute limitation on the number, but rather as the presence of at least one. The word "comprising" or "comprises", and the like, when used in this description, is intended to specify the presence of stated elements or items, but not the exclusion of other elements or items.
Further, it is noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and the like are used in the description of the invention in a generic sense, e.g., connected as either a fixed connection or a removable connection or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected through the inside of two elements, and those skilled in the art can understand their specific meaning in this application according to the specific situation.
The present application is described in further detail below with reference to fig. 1-2.
One aspect provides a distributed network architecture comprising:
the distributed network comprises a bus management controller 1 and a plurality of network node machines 2; wherein:
the bus management controller 1 distributes a time message corresponding to its local time;
each network node machine 2 receives the time message distributed by the bus management controller 1, updates the local time to the corresponding time, and generates a corresponding timestamp according to the local time.
For the distributed network architecture disclosed in the above embodiments, it can be understood by those skilled in the art that the bus management controller 1 distributes a time message corresponding to its local time to each network node machine 2, and each network node machine 2 updates the local time and generates a corresponding timestamp after receiving the time message distributed by the bus management controller 1, thereby implementing definition of a unified clock in the distributed network architecture.
For the distributed network architecture disclosed in the above embodiments, it can be further understood by those skilled in the art that the distributed network architecture can be used for an aircraft onboard system, and when the distributed network architecture is used for the aircraft onboard system, because a unified clock is defined, the time between each node device can be unified, so that when a fault occurs and fault analysis is performed, the occurrence time of the fault can be easily determined, the fault can be accurately located, and the reliability and the safety of the aircraft onboard system can be ensured.
In some optional embodiments, in the foregoing distributed network architecture, the bus management controller 1 distributes a time message corresponding to its local time, specifically:
the bus management controller 1 distributes a time message corresponding to its local time in the form of a broadcast message.
In some optional embodiments, in the distributed network architecture described above, the bus management controller 1 periodically distributes the time message corresponding to its local time;
each network node machine 2 receives the time message periodically distributed by the bus management controller 1, updates the local time to the corresponding time, and generates a corresponding timestamp according to the local time, that is, each network node machine 2 can periodically update the local time according to the time message periodically distributed by the bus management controller 1, and generates a corresponding timestamp, so as to ensure the consistency of the time among the network node machines 2 without large deviation.
In some alternative embodiments, in the above-mentioned distributed network architecture, the local time of the bus management controller 1 is accumulated according to the 20us resolution, i.e. a time counter may be designed, and the time counter may be initialized to 0 and then accumulated according to the 20us resolution.
In some optional embodiments, in the above-mentioned distributed network architecture, the local time of each network node machine 2 is accumulated according to a resolution of 20us, that is, a time counter may be designed, and the time counter may be initialized to 0, periodically updated according to the time message distributed by the receiving bus management controller 1, and then accumulated according to a resolution of 20 us.
In another aspect, a distributed network time synchronization method is provided, including:
the bus management controller 1 in the distributed network distributes the time information corresponding to the local time;
each network node machine 2 in the distributed network receives the time message distributed by the bus management controller 1, updates the local time to the corresponding time, and generates a corresponding timestamp according to the local time.
For the distributed network time synchronization method disclosed in the above embodiment, as can be understood by those skilled in the art, the bus management controller 1 distributes a time message corresponding to the local time of each network node machine 2 to each network node machine 2, so that each network node machine 2 updates the local time and generates a corresponding timestamp after receiving the time message distributed by the bus management controller 1, thereby implementing definition of a unified clock in a distributed network architecture.
For the distributed network time synchronization method disclosed in the above embodiment, it can be further understood by those skilled in the art that the method can be used for an aircraft onboard system, and when the method is used for the aircraft onboard system, because a unified clock is defined, the time between each node device can be unified, so that when a fault occurs and fault analysis is performed, the occurrence time of the fault can be easily determined, the fault can be accurately positioned, and the reliability and the safety of the aircraft onboard system can be ensured.
In some optional embodiments, in the above method for time synchronization of a distributed network, the bus management controller 1 in the distributed network distributes a time message corresponding to its local time, specifically:
the bus management controller 1 in the distributed network distributes the time message corresponding to its local time in the form of a broadcast message.
In some optional embodiments, in the above-mentioned distributed network time synchronization method, the bus management controller 1 periodically distributes the time message corresponding to its local time;
each network node machine 2 receives the time message periodically distributed by the bus management controller 1, updates the local time to the corresponding time, and generates a corresponding timestamp according to the local time, that is, each network node machine 2 can periodically update the local time according to the time message periodically distributed by the bus management controller 1, and generates a corresponding timestamp, so as to ensure the consistency of the time among the network node machines 2 without large deviation.
In some alternative embodiments, in the above-mentioned distributed network time synchronization method, the local time of the bus management controller 1 is accumulated according to a resolution of 20us, i.e. a time counter may be designed, and the time counter may be initialized to 0 and then accumulated according to a resolution of 20 us.
In some optional embodiments, in the distributed network time synchronization method, the local time of each network node machine 2 is accumulated according to a resolution of 20us, that is, a time counter may be designed, and the time counter may be initialized to 0, periodically updated according to the time message distributed by the receiving bus management controller 1, and then accumulated according to a resolution of 20 us.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
Having thus described the present application in connection with the preferred embodiments illustrated in the accompanying drawings, it will be understood by those skilled in the art that the scope of the present application is not limited to those specific embodiments, and that equivalent modifications or substitutions of related technical features may be made by those skilled in the art without departing from the principle of the present application, and those modifications or substitutions will fall within the scope of the present application.
Claims (10)
1. A distributed network architecture, comprising:
a distributed network comprising a bus management controller (1), a plurality of network node machines (2); wherein:
the bus management controller (1) distributes a time message corresponding to its local time;
each network node machine (2) receives the time message distributed by the bus management controller (1), updates the local time to the corresponding time, and generates a corresponding time stamp according to the local time.
2. The distributed network architecture of claim 1,
the bus management controller (1) distributes a time message corresponding to the local time, specifically:
the bus management controller (1) distributes the time message corresponding to its local time in the form of a broadcast message.
3. The distributed network architecture of claim 1,
the bus management controller (1) periodically distributes time messages corresponding to the local time of the bus management controller;
each network node machine (2) receives the time information periodically distributed by the bus management controller (1), updates the local time to the corresponding time, and generates a corresponding time stamp according to the local time.
4. The distributed network architecture of claim 1,
the local time of the bus management controller (1) is accumulated with a resolution of 20 us.
5. The distributed network architecture of claim 1,
the local time of each of the network node machines (2) is accumulated according to a resolution of 20 us.
6. A method for time synchronization in a distributed network, comprising:
a bus management controller (1) in a distributed network distributes a time message corresponding to its local time;
each network node machine (2) in the distributed network receives the time message distributed by the bus management controller (1), updates the local time to the corresponding time, and generates a corresponding time stamp according to the local time.
7. The distributed network time synchronization method of claim 6,
the bus management controller (1) in the distributed network distributes time information corresponding to the local time of the bus management controller, and the method specifically comprises the following steps:
a bus management controller (1) in a distributed network distributes time messages corresponding to its local time in the form of broadcast messages.
8. The distributed network time synchronization method of claim 6,
the bus management controller (1) periodically distributes time messages corresponding to the local time of the bus management controller;
each network node machine (2) receives the time information periodically distributed by the bus management controller (1), updates the local time to the corresponding time, and generates a corresponding time stamp according to the local time.
9. The distributed network time synchronization method of claim 6,
the local time of the bus management controller (1) is accumulated with a resolution of 20 us.
10. The distributed network time synchronization method of claim 6,
the local time of each of the network node machines (2) is accumulated according to a resolution of 20 us.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110590618.8A CN113497663A (en) | 2021-05-28 | 2021-05-28 | Distributed network architecture and time synchronization method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110590618.8A CN113497663A (en) | 2021-05-28 | 2021-05-28 | Distributed network architecture and time synchronization method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113497663A true CN113497663A (en) | 2021-10-12 |
Family
ID=77997509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110590618.8A Pending CN113497663A (en) | 2021-05-28 | 2021-05-28 | Distributed network architecture and time synchronization method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113497663A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116010413A (en) * | 2022-12-27 | 2023-04-25 | 箭牌家居集团股份有限公司 | Identification generation method, server and storage medium |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1520645A (en) * | 2001-04-03 | 2004-08-11 | ��ķɭ��ɹ�˾ | Clock synchronization over powerline modem network for multiple devices |
| CN101420350A (en) * | 2009-01-14 | 2009-04-29 | 中国科学院电工研究所 | Master node failure tolerant method for TTCAN bus network time |
| US8432942B1 (en) * | 2003-05-16 | 2013-04-30 | Apple Inc. | Providing a timing source for multiple nodes coupled to a circuit-switched network |
| CN104468072A (en) * | 2014-12-04 | 2015-03-25 | 中国航空工业集团公司第六三一研究所 | IMA platform clock synchronization method |
| CN105429725A (en) * | 2015-11-17 | 2016-03-23 | 中南大学 | SOPC (System on a Programmable Chip) networking based sub-microsecond level clock synchronizing method and system |
| CN105553592A (en) * | 2015-12-10 | 2016-05-04 | 中国航空工业集团公司西安航空计算技术研究所 | IMA processor system clock synchronization method |
| CN108809466A (en) * | 2017-05-05 | 2018-11-13 | 中国航空无线电电子研究所 | A kind of method of synchronous TTE networks and TTP bus network clocks |
| US20180332548A1 (en) * | 2017-05-09 | 2018-11-15 | U.S.A. as represented by the Administrator of NASA | System and Method to Synchronize Clocks Across a Distributed Network of Nodes |
| CN109842456A (en) * | 2019-03-25 | 2019-06-04 | 中国航空无线电电子研究所 | A kind of clock synchronizing method based on AFDX network |
| CN110224778A (en) * | 2019-06-14 | 2019-09-10 | 中国航空工业集团公司西安飞机设计研究所 | A kind of clock synchronizing method of distributed system |
| CN112073278A (en) * | 2020-08-25 | 2020-12-11 | 中国航空工业集团公司沈阳飞机设计研究所 | Airborne electromechanical integrated management system |
| CN112640332A (en) * | 2020-12-01 | 2021-04-09 | 华为技术有限公司 | Communication method and device |
| US20210112512A1 (en) * | 2019-10-14 | 2021-04-15 | Rosemount Aerospace Inc. | Time synchronization of distributed devices |
-
2021
- 2021-05-28 CN CN202110590618.8A patent/CN113497663A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1520645A (en) * | 2001-04-03 | 2004-08-11 | ��ķɭ��ɹ�˾ | Clock synchronization over powerline modem network for multiple devices |
| US8432942B1 (en) * | 2003-05-16 | 2013-04-30 | Apple Inc. | Providing a timing source for multiple nodes coupled to a circuit-switched network |
| CN101420350A (en) * | 2009-01-14 | 2009-04-29 | 中国科学院电工研究所 | Master node failure tolerant method for TTCAN bus network time |
| CN104468072A (en) * | 2014-12-04 | 2015-03-25 | 中国航空工业集团公司第六三一研究所 | IMA platform clock synchronization method |
| CN105429725A (en) * | 2015-11-17 | 2016-03-23 | 中南大学 | SOPC (System on a Programmable Chip) networking based sub-microsecond level clock synchronizing method and system |
| CN105553592A (en) * | 2015-12-10 | 2016-05-04 | 中国航空工业集团公司西安航空计算技术研究所 | IMA processor system clock synchronization method |
| CN108809466A (en) * | 2017-05-05 | 2018-11-13 | 中国航空无线电电子研究所 | A kind of method of synchronous TTE networks and TTP bus network clocks |
| US20180332548A1 (en) * | 2017-05-09 | 2018-11-15 | U.S.A. as represented by the Administrator of NASA | System and Method to Synchronize Clocks Across a Distributed Network of Nodes |
| CN109842456A (en) * | 2019-03-25 | 2019-06-04 | 中国航空无线电电子研究所 | A kind of clock synchronizing method based on AFDX network |
| CN110224778A (en) * | 2019-06-14 | 2019-09-10 | 中国航空工业集团公司西安飞机设计研究所 | A kind of clock synchronizing method of distributed system |
| US20210112512A1 (en) * | 2019-10-14 | 2021-04-15 | Rosemount Aerospace Inc. | Time synchronization of distributed devices |
| CN112073278A (en) * | 2020-08-25 | 2020-12-11 | 中国航空工业集团公司沈阳飞机设计研究所 | Airborne electromechanical integrated management system |
| CN112640332A (en) * | 2020-12-01 | 2021-04-09 | 华为技术有限公司 | Communication method and device |
Non-Patent Citations (1)
| Title |
|---|
| 阿永嘎;叶凌云;: "网络式仪器总线同步协议的精确时间戳生成方法的研究", 机电工程, no. 11 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116010413A (en) * | 2022-12-27 | 2023-04-25 | 箭牌家居集团股份有限公司 | Identification generation method, server and storage medium |
| CN116010413B (en) * | 2022-12-27 | 2024-02-06 | 箭牌家居集团股份有限公司 | Identification generation method, server and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104821870B (en) | Clock synchronizing method based on main website intelligent grid supporting system technology | |
| JPH05307424A (en) | Method for controlling clock time in computer network | |
| US20110264244A1 (en) | Systems and methods for identifying fieldbus devices in a control system | |
| CN113497663A (en) | Distributed network architecture and time synchronization method thereof | |
| CN102609342A (en) | Methods and systems for diagnosing hardware and software faults using time-stamped events | |
| CN102003347A (en) | System, device and method for monitoring communication in wind farm network | |
| EP3630578A1 (en) | Method for operating a rail vehicle | |
| DE102014221678A1 (en) | A method and apparatus for providing a tachograph service for vehicle diagnostics using an in-vehicle time synchronization message. | |
| US8775885B2 (en) | IEEE1588 protocol negative testing method | |
| JP2016212921A (en) | Equipment management device | |
| CN108023656A (en) | A kind of method for synchronizing time and equipment | |
| CN103458024A (en) | Data updating and synchronizing method for human-computer interface in automatic train supervision system | |
| CN112654551B (en) | Railway diagnostic system and method | |
| CN106549904A (en) | The method and device of packet parsing | |
| CN104767597B (en) | A kind of redundancy control method and device of Ethernet | |
| US8560668B2 (en) | Alarm correlation system | |
| CN112104432B (en) | Time verification method, system, base station and bearing network in mobile communication network | |
| CN109446291B (en) | Road network state statistical method and device and computer readable storage medium | |
| CN107947999A (en) | A kind of method and device of definite alarm order of occurrence | |
| EP3669278A1 (en) | Method and device for a reaction-free and integrity-protected synchronization of log data | |
| CN106470083B (en) | A kind of synchronizing network detection method and device | |
| WO2016030141A1 (en) | Energy management method, energy management device, switching device for an energy management device, and computer software product | |
| CN110098971A (en) | A kind of network link asymmetry measurement method and network node | |
| WO2007071378A1 (en) | Method and arrangement for the reliable monitoring and evaluation of operating states of at least one traffic control system, and use of the same | |
| CN114180096A (en) | Maintenance and detection method for airborne product |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211012 |
|
| RJ01 | Rejection of invention patent application after publication |