CN116599914A - A wide-area measurement, control and protection method, device, equipment and readable storage medium - Google Patents
A wide-area measurement, control and protection method, device, equipment and readable storage medium Download PDFInfo
- Publication number
- CN116599914A CN116599914A CN202310494400.1A CN202310494400A CN116599914A CN 116599914 A CN116599914 A CN 116599914A CN 202310494400 A CN202310494400 A CN 202310494400A CN 116599914 A CN116599914 A CN 116599914A
- Authority
- CN
- China
- Prior art keywords
- service
- delay
- wide area
- area measurement
- eos
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/76—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/80—Actions related to the user profile or the type of traffic
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The application provides a wide area measurement and control protection method, a device, equipment and a readable storage medium, which relate to the technical field of wide area measurement and control protection and comprise the steps of acquiring Ethernet data frames of a service side; adopting a multi-service transmission platform to form a special line channel, and establishing EOS service mapping and SDH virtual concatenation related to the Ethernet data frame for each network element in the multi-service transmission platform; calculating the time delay of EOS service according to different Ethernet packet lengths; the application is used for solving the technical problem that the time delay requirement cannot be met when the 2M binding bandwidth is adopted in a mode that a special line channel is built by adopting an MSTP transmission system based on SDH in a high-speed railway in the prior art.
Description
Technical Field
The application relates to the technical field of wide area measurement and control protection, in particular to a method, a device and equipment for wide area measurement and control protection and a readable storage medium.
Background
The wide area measurement and control protection function in the intelligent power supply dispatching system of the high-speed railway is based on a shared data network of an intelligent traction substation, a subarea, an opening and closing station and an AT station, and network relay protection taking a power supply arm unit as an object is realized by comprehensively utilizing information such as the electric quantity, the switching value and the intelligent equipment state of each power supply equipment. To achieve this function, a redundant, low latency (less than 10 ms) shared ethernet ring must be employed between kiosks. In the prior art, a special line channel is constructed by adopting an MSTP transmission system based on SDH, and when a 2M binding bandwidth is adopted, the time delay requirement cannot be met.
Disclosure of Invention
The application aims to provide a wide area measurement and control protection method, a device, equipment and a readable storage medium, so as to solve the problems. In order to achieve the above purpose, the technical scheme adopted by the application is as follows:
in a first aspect, the present application provides a wide area measurement and control protection method, including:
acquiring an Ethernet data frame of a service side;
adopting a multi-service transmission platform to form a special line channel, and establishing EOS service mapping and SDH virtual concatenation related to the Ethernet data frame for each network element in the multi-service transmission platform;
calculating the time delay of EOS service according to different Ethernet packet lengths;
and changing the binding bandwidth of the SDH according to the time delay of the EOS service corresponding to different Ethernet packet lengths so as to reduce the time delay of the EOS service.
In a second aspect, the present application further provides a wide area measurement and control protection device, including:
the acquisition module is used for: the method comprises the steps of acquiring an Ethernet data frame of a service side;
and a mapping module: the system is used for forming a special line channel by adopting a multi-service transmission platform, and establishing EOS service mapping and SDH virtual concatenation related to the Ethernet data frame for each network element in the multi-service transmission platform;
a first calculation module: the delay calculation module is used for calculating the delay of EOS service according to different Ethernet packet lengths;
and an adjustment module: and the method is used for changing the binding bandwidth of the SDH according to the time delay of the EOS service corresponding to different Ethernet packet lengths so as to reduce the time delay of the EOS service.
In a third aspect, the present application further provides a wide area measurement and control protection device, including:
a memory for storing a computer program;
and the processor is used for realizing the steps of the wide area measurement and control protection method when executing the computer program.
In a fourth aspect, the present application further provides a readable storage medium, where a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method based on wide area measurement and control protection described above.
The beneficial effects of the application are as follows:
according to the time delay requirement of the wide area measurement and control protection channel, the application provides a technical route which can reduce the time delay by increasing the bandwidth, and the transmission system is utilized to construct the traction power supply wide area measurement and control protection channel, so that the use amount of fiber cores of long-distance optical cables is saved, the running condition of the channel can be monitored through a transmission network manager, and the maintenance and guarantee level is improved.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the embodiments of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a wide area measurement and control protection method according to an embodiment of the application;
FIG. 2 is a schematic diagram of a wide area measurement and control protection device according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a wide area measurement and control protection device according to an embodiment of the present application.
The marks in the figure:
800. wide area measurement and control protection equipment; 801. a processor; 802. a memory; 803. a multimedia component; 804. an I/O interface; 805. a communication component.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
Example 1:
the embodiment provides a wide area measurement and control protection method.
Referring to fig. 1, the method is shown to include:
s1, acquiring an Ethernet data frame of a service side;
s2, adopting a multi-service transmission platform (MSTP forms a special line channel, and establishing EOS service mapping and SDH virtual concatenation related to the Ethernet data frame for each network element in the multi-service transmission platform;
the MSTP transmission system adopts SDH technical system on the optical layer, the Ethernet service is mapped into the frame structure of SDH after being bundled (virtual concatenation) by VC, the MSTP technology is adopted to realize the transmission of Ethernet, and two Ethernet processing modes are adopted:
(1) And the bus type structure adopts 1 vcttung to carry out east service and the other 1 vcttung to carry out west service at the system level, and simultaneously binds 2 vcttung and Ethernet physical ports into 1 Ethernet service port. (
2) In the ring structure, 1 vcttung is adopted to bind east traffic and Ethernet ports at the system level, and another 1 vcttung is adopted to bind west traffic and Ethernet ports
The two structures mentioned above, the mapping of Ethernet service generates EOS delay, and the two structures are not different, only the bus type service will use the two-layer Ethernet switching function of the transmission node, the physical interface is 1 less than the ring networking, and the delay is increased by 1 two-layer switching service (us level).
S3, calculating the time delay of EOS service according to different Ethernet packet lengths, and specifically:
1) EOS based on VC 12:
the delay for computing a VCG transport L (Bytes) packet long message containing N VCs 12 is about:
Latency＝(L/272/N+0.5)ms；(1)
wherein, the payload bandwidth of the VC12 service is 34 Bytes/frame×8000 frames/s=272 KBytes/s; the Ethernet message length is 256B/s, then there are:
when N is taken as 1, there is latency= (256/272/1+0.5) ms=1.441 1ms.
When N is taken as 10, there is latency= (256/272/10+0.5) ms=0.594 1ms.
2) EOS based on VC 3:
the delay of a VCG transport L (Bytes) packet long message containing N VCs 3 is approximately:
Latency ＝ (L/6048/N + 0.125) ms ； (2)
wherein, the payload bandwidth of the VC3 service is 756 Bytes/frame×8000 frame/s=6048K Bytes/s, and the Ethernet message length is 256B/s, the following are:
n is taken as 1, then there is latency= (256/6048/1+0.125) ms=0.167 ms.
From the above theoretical calculation, to reduce the delay of EOS, the bundling bandwidth of SDH is required, and the larger the bandwidth, the smaller the delay of EOS.
S4, changing the binding bandwidth of SDH according to the time delay of EOS service corresponding to different Ethernet packet lengths so as to reduce the time delay of EOS service.
Based on the above embodiments, after the changing the binding bandwidth of the SDH according to the delay of the EOS service corresponding to different ethernet packet lengths to reduce the delay of the EOS service, the method tests the changing binding bandwidth of the SDH:
testing the channel delay under different communication networking scheme environments;
taking ports at two ends of a communication transmission network and ports at two ends of a power supply professional switch channel as starting and stopping ends of a tested link channel;
and detecting the packet loss rate and delay of the starting and stopping ends.
For example: 6 service landing nodes of one high-speed rail are provided, the Ethernet service passes through 5 hops, and 2 EOS (Ethernet over coax) occurs in each hop; the SDH forwarding delay of the non-service floor node is calculated according to 60 mu s, and the end-to-end delay is calculated as follows:
a. 1 VC12 and 2M bandwidth bundling mapping is employed:
end-to-end delay = 5 x Latency x 2+6 x 60 μs + optical transmission delay = 5 x 1.4411 x 2+6 x 0.06 = 14.771ms.
b. 10 VCs 12 and 20M bandwidth bundling mapping are employed:
end-to-end delay = 5 x Latency x 2+6 x 60 μs + optical transmission delay = 5 x 0.5941 x 2+6 x 0.06 = 6.301ms.
c. Adopting VC3 bandwidth binding mapping:
end-to-end delay = 5 x Latency x 2+6 x 60 μs + optical transmission delay = 5 x 0.167 x 2+6 x 0.06 = 2.03ms.
From the calculation analysis, if the Ethernet service mapping is performed by adopting 2Mb/s meeting the bandwidth requirement, the time delay requirement is not met.
Aiming at the analysis, the channel delay under different communication networking scheme environments is tested, the influence of the different networking scheme environments on the channel delay is analyzed and compared, the feasibility of the transmission system for carrying the wide area measurement and control service is verified, and the wide area channel bandwidth and service configuration scheme is determined, so that the wide area channel bandwidth and service configuration scheme meets the technical conditions of normal operation of the wide area protection measurement and control system, and the test result is as follows:
(1) The communication networking affects the channel delay secondarily, and the bus networking delay is lower than that of the ring networking. Under the condition of the same bandwidth, the influence range of the communication network on the channel delay is between 0.58 and 0.85ms, and the influence of the communication network on the whole channel delay is less than 10 percent;
(2) The switch has small influence on the channel delay, the influence on the channel delay ranges from 0.06 ms to 0.23ms, and the switch occupies the whole channel delay influence.
Finally, through the analysis, the time delay of the MSTP transmission system is mainly caused by EOS, the time delay of the EOS is reduced, the binding bandwidth of SDH is increased, and the larger the bandwidth is, the smaller the time delay of the EOS is; the time delay difference between the bus networking mode and the annular networking mode is not great; the above findings were validated in network testing. The MSTP transmission system is adopted to construct a traction power supply wide area protection special line channel, and the time delay can meet the requirement under the condition that the binding bandwidth of SDH is large enough (more than or equal to 20M).
Example 2:
as shown in fig. 2, the present embodiment provides a wide area measurement and control protection device, which includes:
the acquisition module is used for: the method comprises the steps of acquiring an Ethernet data frame of a service side;
and a mapping module: the system is used for forming a special line channel by adopting a multi-service transmission platform, and establishing EOS service mapping and SDH virtual concatenation related to the Ethernet data frame for each network element in the multi-service transmission platform;
a first calculation module: the delay calculation module is used for calculating the delay of EOS service according to different Ethernet packet lengths;
and an adjustment module: and the method is used for changing the binding bandwidth of the SDH according to the time delay of the EOS service corresponding to different Ethernet packet lengths so as to reduce the time delay of the EOS service.
Based on the above embodiments, the mapping module includes:
making 1 vctthenk as east service and 1 vctthenk as west service;
the 2 vctrunnk and ethernet physical ports are simultaneously bound to ethernet traffic ports.
Based on the above embodiment, the mapping module further includes a second calculating module:
a first calculation unit: a first time delay for calculating 1 VCG transmission message based on VC 12;
a second calculation unit: second delay for calculating 10 VCG-based transport messages of VC12
A third calculation unit: a third delay for calculating 1 VCG transmission message based on VC 13;
a fourth calculation unit: for calculating a fourth delay of 10 VCG transmission messages based on VC 13.
Based on the above embodiment, the adjusting module further includes:
test unit: the method is used for testing channel delay under different communication networking scheme environments;
and a detection unit: the method is used for detecting the packet loss rate and the delay of the starting and stopping ends by taking the ports at the two ends of the communication transmission network and the ports at the two ends of the power supply professional exchanger channel as the starting and stopping ends of the tested link channel.
It should be noted that, regarding the apparatus in the above embodiments, the specific manner in which the respective modules perform the operations has been described in detail in the embodiments regarding the method, and will not be described in detail herein.
Example 3:
corresponding to the above method embodiment, a wide area measurement and control protection device is further provided in this embodiment, and a wide area measurement and control protection device described below and a wide area measurement and control protection method described above may be referred to correspondingly.
FIG. 3 is a block diagram of a wide area measurement and control protection device 800, shown in accordance with an exemplary embodiment. As shown in fig. 3, the wide area measurement and control protection device 800 may include: a processor 801, a memory 802. The wide area measurement and control protection device 800 may also include one or more of a multimedia component 803, an i/O interface 804, and a communication component 805.
The processor 801 is configured to control the overall operation of the wide area measurement and control protection device 800, so as to complete all or part of the steps in the wide area measurement and control protection method. The memory 802 is used to store various types of data to support operation on the wide area dongle 800, which may include, for example, instructions for any application or method operating on the wide area dongle 800, as well as application related data such as contact data, messages, pictures, audio, video, and the like. The Memory 802 may be implemented by any type or combination of volatile or non-volatile Memory devices, such as static random access Memory (Static Random Access Memory, SRAM for short), electrically erasable programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory, EEPROM for short), erasable programmable Read-Only Memory (Erasable Programmable Read-Only Memory, EPROM for short), programmable Read-Only Memory (Programmable Read-Only Memory, PROM for short), read-Only Memory (ROM for short), magnetic Memory, flash Memory, magnetic disk, or optical disk. The multimedia component 803 may include a screen and an audio component. Wherein the screen may be, for example, a touch screen, the audio component being for outputting and/or inputting audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signals may be further stored in the memory 802 or transmitted through the communication component 805. The audio assembly further comprises at least one speaker for outputting audio signals. The I/O interface 804 provides an interface between the processor 801 and other interface modules, which may be a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 805 is configured to perform wired or wireless communication between the wide area measurement and control protection device 800 and other devices. Wireless communication, such as Wi-Fi, bluetooth, near field communication (Near FieldCommunication, NFC for short), 2G, 3G or 4G, or a combination of one or more thereof, the respective communication component 805 may thus comprise: wi-Fi module, bluetooth module, NFC module.
In an exemplary embodiment, the wide area measurement and control protection device 800 may be implemented by one or more application specific integrated circuits (Application Specific Integrated Circuit, abbreviated as ASIC), digital signal processors (DigitalSignal Processor, abbreviated as DSP), digital signal processing devices (Digital Signal Processing Device, abbreviated as DSPD), programmable logic devices (Programmable Logic Device, abbreviated as PLD), field programmable gate arrays (Field Programmable Gate Array, abbreviated as FPGA), controllers, microcontrollers, microprocessors, or other electronic components for performing the wide area measurement and control protection method described above.
In another exemplary embodiment, a computer readable storage medium is also provided that includes program instructions that, when executed by a processor, implement the steps of the wide area measurement and control protection method described above. For example, the computer readable storage medium may be the memory 802 including program instructions described above, which are executable by the processor 801 of the wide area measurement and control protection device 800 to perform the wide area measurement and control protection method described above.
Example 4:
corresponding to the above method embodiment, a readable storage medium is further provided in this embodiment, and a readable storage medium described below and a wide area measurement and control protection method described above may be referred to correspondingly.
A readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the wide area measurement and control protection method of the above method embodiment.
The readable storage medium may be a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, and the like.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (10)
1. The wide area measurement and control protection method is characterized by comprising the following steps of:
acquiring an Ethernet data frame of a service side;
adopting a multi-service transmission platform to form a special line channel, and establishing EOS service mapping and SDH virtual concatenation related to the Ethernet data frame for each network element in the multi-service transmission platform;
calculating the time delay of EOS service according to different Ethernet packet lengths;
and changing the binding bandwidth of the SDH according to the time delay of the EOS service corresponding to different Ethernet packet lengths so as to reduce the time delay of the EOS service.
2. The method for protecting wide area measurement and control according to claim 1, wherein said adopting a multi-service transmission platform to form a dedicated channel comprises:
making 1 vctthenk as east service and 1 vctthenk as west service;
the 2 vctrunnk and ethernet physical ports are simultaneously bound to ethernet traffic ports.
3. The method of claim 1, wherein the calculating the time delay of the EOS service according to different ethernet packet lengths comprises:
calculating a first time delay of 1 VCG transmission message based on VC 12;
calculating a second time delay of 10 VCG transmission messages based on VC12
Calculating a third time delay of 1 VCG transmission message based on VC 13;
a fourth delay of 10 VCG transport messages based on VC13 is calculated.
4. The method for protecting wide area measurement and control according to claim 1, wherein after changing the binding bandwidth of the SDH according to the delay of the EOS service corresponding to the different ethernet packet lengths to reduce the delay of the EOS service, further comprises testing the changed binding bandwidth of the SDH:
testing the channel delay under different communication networking scheme environments;
taking ports at two ends of a communication transmission network and ports at two ends of a power supply professional switch channel as starting and stopping ends of a tested link channel;
and detecting the packet loss rate and delay of the starting and stopping ends.
5. A wide area measurement and control protection device, comprising:
the acquisition module is used for: the method comprises the steps of acquiring an Ethernet data frame of a service side;
and a mapping module: the system is used for forming a special line channel by adopting a multi-service transmission platform, and establishing EOS service mapping and SDH virtual concatenation related to the Ethernet data frame for each network element in the multi-service transmission platform;
a first calculation module: the delay calculation module is used for calculating the delay of EOS service according to different Ethernet packet lengths;
and an adjustment module: and the method is used for changing the binding bandwidth of the SDH according to the time delay of the EOS service corresponding to different Ethernet packet lengths so as to reduce the time delay of the EOS service.
6. The wide area measurement and control protection device of claim 5, wherein the mapping module comprises:
making 1 vctthenk as east service and 1 vctthenk as west service;
the 2 vctrunnk and ethernet physical ports are simultaneously bound to ethernet traffic ports.
7. The wide area measurement and control protection device of claim 5, further comprising, after the mapping module:
a first calculation unit: a first time delay for calculating 1 VCG transmission message based on VC 12;
a second calculation unit: second delay for calculating 10 VCG-based transport messages of VC12
A third calculation unit: a third delay for calculating 1 VCG transmission message based on VC 13;
a fourth calculation unit: for calculating a fourth delay of 10 VCG transmission messages based on VC 13.
8. The wide area measurement and control protection device of claim 5, further comprising, after the adjustment module:
test unit: the method is used for testing channel delay under different communication networking scheme environments;
and a detection unit: the method is used for detecting the packet loss rate and the delay of the starting and stopping ends by taking the ports at the two ends of the communication transmission network and the ports at the two ends of the power supply professional exchanger channel as the starting and stopping ends of the tested link channel.
9. A wide area measurement and control protection device, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the wide area measurement and control protection method according to any one of claims 1 to 4 when executing said computer program.
10. A readable storage medium, characterized by: the readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the wide area measurement and control protection method according to any of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310494400.1A CN116599914A (en) | 2023-05-05 | 2023-05-05 | A wide-area measurement, control and protection method, device, equipment and readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310494400.1A CN116599914A (en) | 2023-05-05 | 2023-05-05 | A wide-area measurement, control and protection method, device, equipment and readable storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116599914A true CN116599914A (en) | 2023-08-15 |
Family
ID=87603724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310494400.1A Pending CN116599914A (en) | 2023-05-05 | 2023-05-05 | A wide-area measurement, control and protection method, device, equipment and readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116599914A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1937527A (en) * | 2006-09-30 | 2007-03-28 | 华为技术有限公司 | Virtual concatenation group management method and system |
| CN101141350A (en) * | 2007-08-15 | 2008-03-12 | 中兴通讯股份有限公司 | A device and method for processing Ethernet services in a synchronous digital transmission network |
-
2023
- 2023-05-05 CN CN202310494400.1A patent/CN116599914A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1937527A (en) * | 2006-09-30 | 2007-03-28 | 华为技术有限公司 | Virtual concatenation group management method and system |
| CN101141350A (en) * | 2007-08-15 | 2008-03-12 | 中兴通讯股份有限公司 | A device and method for processing Ethernet services in a synchronous digital transmission network |
Non-Patent Citations (2)
| Title |
|---|
| 付暾等: "基于MSTP的EOS传输通道性能测试", 电力系统通信, vol. 29, no. 184, 10 February 2008 (2008-02-10), pages 13 - 16 * |
| 王城伟等: "浅析MSTP设备传送以太网业务的延时", 有线电视技术, no. 12, 10 December 2005 (2005-12-10) * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3817298A1 (en) | Data message detection method, device and system | |
| CN106357537B (en) | A link monitoring method based on SDN multipath transmission | |
| US7961602B2 (en) | Method and device using a backup communication path to transmit excess traffic | |
| CN103716147A (en) | Sampling value transmission and synchronization method with path delay measurement function | |
| CN107547371A (en) | A kind of message forwarding method and device | |
| CN110391951A (en) | Ethernet segment identifies adjacent detection processing method and device, storage medium | |
| US9465701B2 (en) | Relay device and recovery method | |
| US9313122B2 (en) | Frame transmission system, frame transmission apparatus, and frame transmission method | |
| CN101009518B (en) | Processing method of the failure relevancy monitoring for serial connection at different levels | |
| CN110943889A (en) | Intelligent substation in-place looped network communication testing device and method | |
| Jereb | Network reliability: models, measures and analysis | |
| CN116599914A (en) | A wide-area measurement, control and protection method, device, equipment and readable storage medium | |
| EP2832047A1 (en) | Mac copy in nodes detecting failure in a ring protection communication network | |
| CN117319241A (en) | GRE tunnel detection method, device, network equipment and storage medium | |
| CN106953779B (en) | Redundant ring network node monitoring method and system | |
| WO1999000779A2 (en) | Method of routing and bundling demands with low utilization in a telecommunications network | |
| US7170908B2 (en) | System and method of selecting sources for a network element having redundant sources | |
| Ra et al. | Implementation of FPGA‐based MPLS‐TP linear protection switching for 4000+ tunnels in packet transport network for optical carrier Ethernet | |
| CN104378602B (en) | Video transmission method and device | |
| US7355985B2 (en) | Automatic update of squelch tables for optical network applications | |
| CN103117924A (en) | Method and device for protection switching | |
| KR100248406B1 (en) | Line Plan Multiple Selector Multi-Layer Recovery Method in Mesh Structure Network Using Circuit Distribution System | |
| JP4992377B2 (en) | Ringlet switching device and ringlet switching program | |
| CN112702185A (en) | Pre-analysis system for service switching flow based on transmission PTN network link interruption | |
| Dimitrova et al. | Contemporary Trends for Increasing the Reliability of the SCADA systems Communication Level |
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 |