CN105790965A - Method and device for link switching and line card - Google Patents
Method and device for link switching and line card Download PDFInfo
- Publication number
- CN105790965A CN105790965A CN201410789877.3A CN201410789877A CN105790965A CN 105790965 A CN105790965 A CN 105790965A CN 201410789877 A CN201410789877 A CN 201410789877A CN 105790965 A CN105790965 A CN 105790965A
- Authority
- CN
- China
- Prior art keywords
- control board
- link
- line card
- slave control
- message
- 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
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
Abstract
The invention provides a method and a device for link switching and a line card. The method comprises the following steps of establishing a link between a standby main board and the line card; and sending an indication message to the line card through the link between the standby main board and the line card under the circumstance that an active main board has a fault, wherein the indication message is used for indicating the line card to switch to the link between the standby main board and the line card. Through the method and the device for link switching and the line card, a problem that the correlation technique cannot quickly carry out link switching after system switching without affecting the business is solved, so that an effect of quickly carrying out link switching without affecting the business can be realized.
Description
Technical field
The present invention relates to the communications field, in particular to link switch-over method, device and line card.
Background technology
Telecom communication system requires significantly high for the real-time of communication and the protection of business, so usually can provide, two-shipper is active and standby to be run simultaneously, and after main control board is due to abnormal machine of delaying, system is switched to standby host master control borad at once, to ensure the stable and reliable of business.Owing to the communication between master control borad and business line card is relatively more frequent, after masterslave switchover, how fast communication between the new master control borad of quick-recovery and business line card becomes business is stablized critically important index, if not, will cause service disconnection owing to losing message.
Stability and the real-time of business are desirable that significantly high by communication apparatus; system architecture is typically all main-apparatus protection and service distribution formula is main; so the stability requirement of communication link is significantly high; in embedded OS; general with transmission control protocol (TransmissionControlProtocol; referred to as TCP) mode is main, because TCP is reliable and stable, has flow-control, has the bottom stabiliser such as message repeating transmission automatically.But the demand with main-apparatus protection; so being also required to when system generation masterslave switchover; TCP link can monitor rapidly line link switching of going forward side by side; but it practice, the detection that TCP link disconnects is not rapidly, because there is the situation that physical link is unstable after all; if not carrying out stabilization and filtration; may frequently occurring the false alarm of link down, like this can cause the frequent interruption of business, effect is more bad on the contrary.
Accordingly, it is desirable to provide a kind of scheme, it is possible to after system is switched, it is rapidly performed by link switching and does not affect business, and in Link State at ordinary times detects also relatively accurately.
For correlation technique not realizing be rapidly performed by link switching after system is switched and not traffic affecting problem, effective solution is not yet proposed at present.
Summary of the invention
The invention provides link switch-over method, device and line card, at least to solve correlation technique can not realize be rapidly performed by link switching after system is switched and not traffic affecting problem.
According to an aspect of the invention, it is provided a kind of link switch-over method, including: set up the link between slave control board and line card；When main control board breaks down, instruction message is sent by line card described in the chain road direction between described slave control board and described line card, wherein, the link that described instruction message is switched between described slave control board and described line card for indicating described line card.
Further, before the link set up between described slave control board and described line card, also include: described slave control board is set and processes the timeout value timeout value less than described main control board process message of message；Be switched to described slave control board and described line card at described line card after, described main control board be set and process the timeout value timeout value less than described slave control board process message of message.
Further, also include after the link set up between described slave control board and described line card: between described main control board and described slave control board, set up communication link, wherein, described communication link carries out data syn-chronization for described main control board and described slave control board.
According to a further aspect in the invention, it is provided that a kind of link switch-over method, including: receiving the instruction message that main control board breaks down, wherein, described instruction message is to be sent by the link between slave control board and line card；According to described instruction message by the link the link switching between main control board to described slave control board.
According to a further aspect in the invention, it is provided that a kind of link switching device, including: first sets up module, for setting up the link between slave control board and line card；Sending module, for when main control board breaks down, instruction message is sent by line card described in the chain road direction between described slave control board and described line card, wherein, the link that described instruction message is switched between described slave control board and described line card for indicating described line card.
Further, described device also includes: first arranges module, processes the timeout value timeout value less than described main control board process message of message for arranging described slave control board；Second arranges module, for be switched to described slave control board and described line card at described line card after, arrange described main control board and processes the timeout value timeout value less than described slave control board process message of message.
Further, described device also includes: second sets up module, and for setting up communication link between described main control board and described slave control board, wherein, described communication link carries out data syn-chronization for described main control board and described slave control board.
According to a further aspect in the invention, it is provided that a kind of link switching device, including: receiver module, it is used for receiving the instruction message that main control board breaks down, wherein, described instruction message is to be sent by the link between slave control board and line card；Handover module, is used for according to described instruction message by the link the link switching between main control board to described slave control board.
According to a further aspect in the invention, it is provided that a kind of line card, including above-mentioned device.
By the present invention, adopt the link setting up between slave control board and line card；When described main control board breaks down, instruction message is sent by line card described in the chain road direction between described slave control board and described line card, wherein, the link that described instruction message is switched between described slave control board and described line card for indicating described line card, solve and correlation technique can not realize after system is switched, be rapidly performed by link switching and not traffic affecting problem, and then can quickly carry out link switching and not traffic affecting effect.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart one of link switch-over method according to embodiments of the present invention；
Fig. 2 is the flowchart 2 of link switch-over method according to embodiments of the present invention；
Fig. 3 is the block diagram one of link switching device according to embodiments of the present invention；
Fig. 4 is the block diagram one of link switching device according to the preferred embodiment of the invention；
Fig. 5 is the block diagram two of link switching device according to the preferred embodiment of the invention；
Fig. 6 is the block diagram two of link switching device according to embodiments of the present invention；
Fig. 7 is the schematic diagram of system TCP link according to embodiments of the present invention；
Fig. 8 is the flow chart that masterslave switchover according to embodiments of the present invention quickly detects link.
Detailed description of the invention
Below with reference to accompanying drawing and describe the present invention in detail in conjunction with the embodiments.It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
Providing a kind of link switch-over method in the present embodiment, Fig. 1 is the flow chart one of link switch-over method according to embodiments of the present invention, as it is shown in figure 1, this flow process comprises the steps:
Step S102, sets up the link between slave control board and line card；
Step S104, when this main control board breaks down, instruction message is sent by this line card of chain road direction between this slave control board and this line card, wherein, the link that this instruction message is switched between this slave control board and this line card for indicating this line card.
Pass through above-mentioned steps, set up the link between slave control board and line card, when this main control board breaks down, instruction message is sent by this line card of chain road direction between this slave control board and this line card, wherein, the link that this instruction message is switched between this slave control board and this line card for indicating this line card, solve and correlation technique can not realize after system is switched, be rapidly performed by link switching and not traffic affecting problem, and then can quickly carry out link switching and not traffic affecting effect.
Further, before the link set up between this slave control board and this line card, it is also possible to this slave control board is set and processes the timeout value timeout value less than this main control board process message of message；Be switched to this slave control board and this line card at this line card after, this main control board be set and process the timeout value timeout value less than this slave control board process message of message, such that it is able to realize in the short time.
Further, after setting up the link between slave control board and line card, setting up communication link between this main control board and this slave control board, wherein, this communication link carries out data syn-chronization for this main control board and this slave control board.
The embodiment of the present invention additionally provides a kind of link switch-over method, and Fig. 2 is the flowchart 2 of link switch-over method according to embodiments of the present invention, as in figure 2 it is shown, this flow process comprises the steps:
Step S202, receives the instruction message that main control board breaks down, and wherein, this instruction message is to be sent by the link between slave control board and line card；
Step S204, according to this instruction message by the link the link switching between main control board to this slave control board.
Embodiments providing a kind of link switching device, this device is used for realizing above-described embodiment and preferred implementation, has be carried out repeating no more of explanation.As used below, term " module " can realize the software of predetermined function and/or the combination of hardware.
Fig. 3 is the block diagram one of link switching device according to embodiments of the present invention, as it is shown on figure 3, include: first sets up module 32 and sending module 34, below modules is briefly described.
First sets up module 32, for setting up the link between slave control board and line card；
Sending module 34, it is connected to above-mentioned first and sets up module 32, for when this main control board breaks down, instruction message is sent by this line card of chain road direction between this slave control board and this line card, wherein, the link that this instruction message is switched between this slave control board and this line card for indicating this line card.
Fig. 4 is the block diagram one of link switching device according to the preferred embodiment of the invention, and as shown in Figure 4, this device also includes:
First arranges module 42, is connected to above-mentioned first and sets up module 32, processes the timeout value timeout value less than this main control board process message of message for arranging this slave control board；
Second arranges module 44, is connected to above-mentioned sending module 34, for be switched to this slave control board and this line card at this line card after, arrange this main control board and processes the timeout value timeout value less than this slave control board process message of message.
Fig. 5 is the block diagram two of link switching device according to the preferred embodiment of the invention, as it is shown in figure 5, this device also includes:
Second sets up module 52, is connected to above-mentioned first and sets up module 32 and sending module 34, and for setting up communication link between this main control board and this slave control board, wherein, this communication link carries out data syn-chronization for this main control board and this slave control board.
The embodiment of the present invention additionally provides a kind of link switching device, and Fig. 6 is the block diagram two of link switching device according to embodiments of the present invention, as shown in Figure 6, and including:
Receiver module 62, for receiving the instruction message that main control board breaks down, wherein, this instruction message is to be sent by the link between slave control board and line card；
Handover module 64, is connected to above-mentioned receiver module 62, is used for according to this instruction message by the link the link switching between main control board to this slave control board.
The embodiment of the present invention additionally provides a kind of line card, including above-mentioned device.
Below in conjunction with alternative embodiment, the embodiment of the present invention is further described.
This alternative embodiment correctly can quickly detect and be quickly switched into new passage with recovery business; can so that the main-apparatus protection mechanism of telecom communication equipment be more reliable; stability for business provides guarantee; by implementing; the program solves some practical business Problems existing; in such as MSAG equipment, masterslave switchover has probability can cause the 30B+D service disconnection under soft switch control.By multiple technology point co-ordinations to accomplish the end in view, including:
Fig. 7 is the schematic diagram of system TCP link according to embodiments of the present invention, as shown in Figure 7, system carries out double; two TCP communication link, one piece of business line card sets up two TCP links, article one, carry out link setup with main control board, other one and slave control board carry out link setup, main frame and standby host and also set up a communication link, for detection and some other the Message Processing at ordinary times of Link State.The TCP link of standby machine, when main frame and standby host process message, the timeout value of the process message arranged is different, and in embedded systems, TCP link is collected message and is usually block type, owing to standby host not having practical business, in order to quickly process message, the timeout value of standby host link is arranged shorter, so after system is switched, standby host can recover to block in the short period of time, and notifies line card；And with a large number of services on main frame, in order to not affect the accuracy of efficiency and link, timeout value arranges relatively big, it is generally 5 seconds.Increase the chain circuit message of a link switching, when masterslave switchover occurs, standby host can notify line card, after line card receives message, business active link before disconnecting immediately, it is switched to new link (disconnecting, so being cannot directly notify line card) owing to former active link is probably direct physical.
This alternative embodiment does not interfere with the detection of normal Link State, because the timeout value of active link or long.And after system is switched, then can be quickly detected link down, and be switched to new in, it is ensured that the smooth and seamless linking of business.
The core of this alternative embodiment is that Fig. 8 is the flow chart that masterslave switchover according to embodiments of the present invention quickly detects link, as shown in Figure 8, including herein below by a plurality of TCP link and collaborative process:
After system start-up, main frame and standby host set up a communication link, are mainly used in master/slave data and synchronize and standby machine link detecting；Wherein, in the process of main frame, it is relatively big that the message of setting accepts timeout value, is generally 5 seconds, be in order to stabilization and and the consideration of efficiency, and that standby host is arranged is shorter, is traditionally arranged to be 2 seconds.Line card all sets up a TCP link after starting respectively with main frame standby host, and its link neutralizing main frame is active link, and the link of standby host link setup is reserve link；The message stream of business generally only walks active link.When system is switched time, the communication link of active and standby, at host computer side, it is probably direct physical interruption owing to switching, so direct lost contact after switching；And in standby host side, owing to link timeout value is shorter, Message Processing is recovered in short time (general 2 seconds), detect this time and break with host link, and system also confirms that system there occurs and switches, its work mainly notifies all of business line card system generation active/standby link switchover, and oneself is set to new host work state, including the value of main frame before message blocking timeout value is set to, such as 5 seconds.The reserve link of each business line card have received before after the active/standby link switchover message that sends of standby host, reserve link before is set to active link, and the active link before disconnecting, and attempts re-establishing a reserve link.
In this alternative embodiment, after the masterslave switchover of system, main/slave link can be quickly detected the interruption of link, and recovers the link with business line card rapidly.In actual use, this process is very fast and smooth, and business is essentially unaffected.
Obviously, those skilled in the art should be understood that, each module of the above-mentioned present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or it is distributed on the network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, can be stored in storage device is performed by calculation element, and in some cases, shown or described step can be performed with the order being different from herein, or they are fabricated to respectively each integrated circuit modules, or the multiple modules in them or step are fabricated to single integrated circuit module realize.So, the present invention is not restricted to the combination of any specific hardware and software.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (9)
1. a link switch-over method, it is characterised in that including:
Set up the link between slave control board and line card；
When main control board breaks down, instruction message is sent by line card described in the chain road direction between described slave control board and described line card, wherein, the link that described instruction message is switched between described slave control board and described line card for indicating described line card.
2. method according to claim 1, it is characterised in that before the link set up between described slave control board and described line card, also include:
Described slave control board is set and processes the timeout value timeout value less than described main control board process message of message；
Be switched to described slave control board and described line card at described line card after, described main control board be set and process the timeout value timeout value less than described slave control board process message of message.
3. method according to claim 1, it is characterised in that after the link set up between described slave control board and described line card, also include:
Setting up communication link between described main control board and described slave control board, wherein, described communication link carries out data syn-chronization for described main control board and described slave control board.
4. a link switch-over method, it is characterised in that including:
Receiving the instruction message that main control board breaks down, wherein, described instruction message is to be sent by the link between slave control board and line card；
According to described instruction message by the link the link switching between main control board to described slave control board.
5. a link switching device, it is characterised in that including:
First sets up module, for setting up the link between slave control board and line card；
Sending module, for when main control board breaks down, instruction message is sent by line card described in the chain road direction between described slave control board and described line card, wherein, the link that described instruction message is switched between described slave control board and described line card for indicating described line card.
6. device according to claim 5, it is characterised in that described device also includes:
First arranges module, processes the timeout value timeout value less than described main control board process message of message for arranging described slave control board；
Second arranges module, for be switched to described slave control board and described line card at described line card after, arrange described main control board and processes the timeout value timeout value less than described slave control board process message of message.
7. device according to claim 5, it is characterised in that described device also includes:
Second sets up module, and for setting up communication link between described main control board and described slave control board, wherein, described communication link carries out data syn-chronization for described main control board and described slave control board.
8. a link switching device, it is characterised in that including:
Receiver module, for receiving the instruction message that main control board breaks down, wherein, described instruction message is to be sent by the link between slave control board and line card；
Handover module, is used for according to described instruction message by the link the link switching between main control board to described slave control board.
9. a line card, it is characterised in that include the device described in claim 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410789877.3A CN105790965A (en) | 2014-12-17 | 2014-12-17 | Method and device for link switching and line card |
| PCT/CN2015/073912 WO2016095344A1 (en) | 2014-12-17 | 2015-03-09 | Link switching method and device, and line card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410789877.3A CN105790965A (en) | 2014-12-17 | 2014-12-17 | Method and device for link switching and line card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105790965A true CN105790965A (en) | 2016-07-20 |
Family
ID=56125725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410789877.3A Pending CN105790965A (en) | 2014-12-17 | 2014-12-17 | Method and device for link switching and line card |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105790965A (en) |
| WO (1) | WO2016095344A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108123889A (en) * | 2016-11-30 | 2018-06-05 | 阿里巴巴集团控股有限公司 | A kind of stream calculation data link support method and system |
| CN110213065A (en) * | 2018-02-28 | 2019-09-06 | 杭州宏杉科技股份有限公司 | A kind of method and device of path switching |
| CN110932970A (en) * | 2019-12-04 | 2020-03-27 | 锐捷网络股份有限公司 | Processing method and device of Transmission Control Protocol (TCP) session |
| CN112954722A (en) * | 2021-01-26 | 2021-06-11 | 深圳震有科技股份有限公司 | System and method for rapidly switching 5G UPF (unified power flow) main link and standby link |
| CN114531475A (en) * | 2020-11-02 | 2022-05-24 | 中兴通讯股份有限公司 | Service transmission method, communication equipment and storage medium |
| WO2022199033A1 (en) * | 2021-03-22 | 2022-09-29 | 中兴通讯股份有限公司 | Network device, inter-board communication method, and storage medium |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109274763B (en) * | 2018-10-24 | 2022-06-07 | 科华恒盛股份有限公司 | Information synchronization method and dual-computer hot standby equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931550A (en) * | 2009-06-23 | 2010-12-29 | 中兴通讯股份有限公司 | Method and device for synchronizing main and standby main control boards |
| CN101964719A (en) * | 2009-07-23 | 2011-02-02 | 中兴通讯股份有限公司 | Data processing method based on operating/standby switch of master control boards, line card and master control boards |
| CN203482216U (en) * | 2013-09-24 | 2014-03-12 | 浙江大华系统工程有限公司 | Network equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100530996C (en) * | 2004-08-06 | 2009-08-19 | 华为技术有限公司 | System and method for realizing veneer active/standby changeover in communication equipment |
| CN101710865A (en) * | 2009-12-23 | 2010-05-19 | 中兴通讯股份有限公司 | Method and device for rapid active-standby switching in network equipment |
| CN103825817B (en) * | 2014-02-18 | 2017-09-15 | 新华三技术有限公司 | Routing Protocol restarts the implementation method uninterruptedly routeing afterwards and device |
-
2014
- 2014-12-17 CN CN201410789877.3A patent/CN105790965A/en active Pending
-
2015
- 2015-03-09 WO PCT/CN2015/073912 patent/WO2016095344A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931550A (en) * | 2009-06-23 | 2010-12-29 | 中兴通讯股份有限公司 | Method and device for synchronizing main and standby main control boards |
| CN101964719A (en) * | 2009-07-23 | 2011-02-02 | 中兴通讯股份有限公司 | Data processing method based on operating/standby switch of master control boards, line card and master control boards |
| CN203482216U (en) * | 2013-09-24 | 2014-03-12 | 浙江大华系统工程有限公司 | Network equipment |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108123889A (en) * | 2016-11-30 | 2018-06-05 | 阿里巴巴集团控股有限公司 | A kind of stream calculation data link support method and system |
| CN108123889B (en) * | 2016-11-30 | 2021-08-27 | 阿里巴巴集团控股有限公司 | Stream computing data link guarantee method and system |
| CN110213065A (en) * | 2018-02-28 | 2019-09-06 | 杭州宏杉科技股份有限公司 | A kind of method and device of path switching |
| CN110213065B (en) * | 2018-02-28 | 2022-11-25 | 杭州宏杉科技股份有限公司 | Method and device for switching paths |
| CN110932970A (en) * | 2019-12-04 | 2020-03-27 | 锐捷网络股份有限公司 | Processing method and device of Transmission Control Protocol (TCP) session |
| CN110932970B (en) * | 2019-12-04 | 2022-03-18 | 锐捷网络股份有限公司 | Processing method and device of Transmission Control Protocol (TCP) session |
| CN114531475A (en) * | 2020-11-02 | 2022-05-24 | 中兴通讯股份有限公司 | Service transmission method, communication equipment and storage medium |
| CN112954722A (en) * | 2021-01-26 | 2021-06-11 | 深圳震有科技股份有限公司 | System and method for rapidly switching 5G UPF (unified power flow) main link and standby link |
| CN112954722B (en) * | 2021-01-26 | 2023-02-03 | 深圳震有科技股份有限公司 | System and method for quickly switching 5G UPF (unified power flow) main link and standby link |
| WO2022199033A1 (en) * | 2021-03-22 | 2022-09-29 | 中兴通讯股份有限公司 | Network device, inter-board communication method, and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016095344A1 (en) | 2016-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105790965A (en) | Method and device for link switching and line card | |
| GB2444170A (en) | Ethernet protection using a redundant link, with link up of a remote port being triggered using a "link status control mechanism". | |
| US8117337B2 (en) | Method and device for implementing link pass through in point-to-multipoint network | |
| EP2352253A1 (en) | Method and apparatus for protecting link aggregation group of ethernet ring | |
| CN102006188B (en) | Path back switching method and device in transport network | |
| CN103780407A (en) | Gateway dynamic switching method and apparatus in distributed resilient network interconnection (DRNI) | |
| US8711686B2 (en) | Packet transmission system and fault recovery method | |
| CN105024798A (en) | Method and device for time synchronization | |
| US20130121683A1 (en) | Apparatus and method for determining a location of failure in a transmission network | |
| WO2016086582A1 (en) | Signal detection method and device | |
| CN104639867A (en) | Method and system for resuming video conferences | |
| CN112218321B (en) | Master-slave link switching method, device, communication equipment and storage medium | |
| CN103036716A (en) | Method and system for link switchover | |
| CN102571458A (en) | Switching method and device for tunnel protection sets | |
| CN101989933A (en) | Method and system for failure detection | |
| EP2928229A1 (en) | Cross-device linear multiplex section overhead method, gateway and controller | |
| CN105634774A (en) | Method, service line card and system for recovering link communication | |
| CN107431655B (en) | Method and apparatus for fault propagation in segment protection | |
| CN101453744B (en) | Service control method and apparatus | |
| CN103414591A (en) | Method and system for fast converging when port failure is recovered | |
| RU2596999C1 (en) | Method and device for processing single optical fibre failures | |
| CN101667863B (en) | Device and method for enhancing channel alarm triggering in multiplex section shared ring net protection | |
| CN101494801A (en) | Method, system and network appliance for fault recovery | |
| CN101217405B (en) | SGSN backup method and communication system, communication device | |
| CN102710358A (en) | Method, device and system for transmitting GM (Grandmaster Clock) state |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160720 |
|
| WD01 | Invention patent application deemed withdrawn after publication |