CN105306188A - Multilink master clock switching method, device and PTN equipment - Google Patents
Multilink master clock switching method, device and PTN equipment Download PDFInfo
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- CN105306188A CN105306188A CN201410362339.6A CN201410362339A CN105306188A CN 105306188 A CN105306188 A CN 105306188A CN 201410362339 A CN201410362339 A CN 201410362339A CN 105306188 A CN105306188 A CN 105306188A
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- 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
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- 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
- H04J3/0641—Change of the master or reference, e.g. take-over or failure of the master
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- 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
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0823—Errors, e.g. transmission errors
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
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- Synchronisation In Digital Transmission Systems (AREA)
Abstract
The invention provides a multilink master clock switching method, device and PTN equipment. The multilink master clock switching method is applied to PTN (Packet Transport Network) equipment and the multiple links belong to the same clock domain. The switching method comprises the following steps: according to the status information of a jitter buffer in the PNT equipment and the data transmission information of the current master clock link, judging whether master clock link switching is in need or not; and if master clock link switching is in need, selecting one of the multiple links except the current master clock link as a new master clock link. With adoption of the technical scheme provided by the invention, whether the current master clock link needs to be switched or not can be adjusted according to the service transmission situation in PTN; and when the current master clock link needs to be switched, a new master clock link can be selected, thus avoiding the problem of the reduction of service transmission quality due to frequent switching of the master clock link.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of multilink master clock changing method, device and PTN device.
Background technology
In the process of legacy network IPization, the TDM such as a large amount of public switched telephone networks (TimeDivisionMultiplex, time division multiplexing) the unified access of service needed and transmitting, TDMoverIP theory is arisen at the historic moment, the tdm data being encapsulated as IP bag is transparent to opposite end by PTN (Packet Transport Network, PacketTransportNetwork).PTN supports the multiple two-way point-to-point interface channel based on packet switching service; there is applicable various large or fine granule business, end to end networking capability; provide " flexibility " transmission pipeline being more suitable for IP operation characteristic; the protection of point to point connect passage switches and can complete in 50 milliseconds, can realize service protection and the recovery of transfer level.
Traditional fixed network is with SDH (SynchronousDigitalHierarchy, SDH (Synchronous Digital Hierarchy)) be standard, require to keep clock synchronous, and concrete requirement is not proposed to clock synchronous after network IPization, therefore, when business transmits in an ip network, clock information can be lost, if bag stream is reduced into TDM business and uses local clock by opposite end, asynchronous with service source clock, at present, conventional in PTN data transmission procedure clock recovery techniques mainly comprises two kinds: adaptive clock recovery technology and differential clocks recovery technology.Wherein, self-adaptation clock is the main flow clock recovery techniques of industry, as shown in Figure 1, its operation principle is: by PTN device A, business datum is sent to PTN device B at the entrance a place of PTN network, the adaptive clock recovery module of PTN device B goes out business clock according to the rate recovery that arrives at of business data packet, and adopts this clock to send business datum.
In existing network application, often use to go out transmission link by some and bundle, use same clock to send, also namely multilink belongs to same clock zone.Realize E1 to use PTN carrying and converge to STM-1, normally the E1 signal multiplexing of 2Mbit/s is entered the STM-1 signal of 155Mbit/s at a high speed, and the clock of 2Mbit/s can be recovered by Ethernet packet receiving.A kind of current adaptive clock recovery method is all recovered by the clock of each E1, as the clock of tributary signal in STM-1 signal, because time delay or shake may appear in transmission link, the frequency recovering every bar E1 can be caused all different, can make to occur pointer regulation frequently on the low order channel of STM-1.And as adaptive clock recovery module, all implement adaptive clock recovery algorithm, consume a large amount of resources to every bar link, this expense is particularly outstanding when inadequate resource.
Therefore, for this phenomenon, in prior art, provide a kind of multilink clock zone restoration methods, be subordinated in the multilink of same clock zone and select a link as master clock link, the clock of master clock link is recovered, as the tranmitting data register of all links of this clock zone.But, if when there is problem in the recovered clock of this primary link, the recovered clock of all links belonging to a clock zone with this master clock link together may be caused all to go wrong, need to reselect master clock link, but, if carry out the gravity treatment of master clock link continually, service transmission quality can be made to reduce, therefore, need to control the reuse adoption process of master clock link.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of multilink master clock changing method, device and PTN device, judge that current master clock link is the need of switching according to business transmission situation in PTN network, and reselect master clock link when needs switch, thus avoid master clock link and frequently switch the problem causing service transmission quality to reduce.
To achieve these goals, the invention provides a kind of multilink master clock changing method, for grouping conveying network PTN device, described multilink belongs to same clock zone, described changing method comprises: according to the state information of the shake register in described PTN device and the data transmission information of current master clock link, judge whether to need to carry out master clock link switching; When needs carry out master clock link switching, from the multilink except described current master clock link, select a link as new master clock link.
Above-mentioned multilink master clock changing method, wherein, describedly judge whether that needing to carry out master clock link switching is specially: according to the state information of the shake register in the described PTN device got every Preset Time and the data transmission information of current master clock link, judge whether described current master clock link lost efficacy; When the number of times that described current master clock link lost efficacy continuously reaches preset times, judge to need to carry out master clock link switching.
Above-mentioned multilink master clock changing method, wherein, the state information of described shake register comprises: shake register overflow or shake register underflow, when meeting the arbitrary condition in following condition, judge described current master clock link failure: as the data transmission information of shake register underflow or described current master clock link, the state information of described shake register shows that described current master clock link is current as the state information of shake register overflow, described shake register and do not transmit any data.
Above-mentioned multilink master clock changing method, wherein, describedly from the multilink except described current master clock link, a link is selected to comprise as new master clock link: the data transmission information obtaining the every bar link in multilink except described current master clock link; From the multilink except described current master clock link, select the link of current transmission data as new master clock link.
Above-mentioned multilink master clock changing method, wherein, the described link of current transmission data of selecting from the multilink except described current master clock link is specially as new master clock link: from next link of described current master clock link, search the link of current transmission data as new master clock link according to link number.
Present invention also offers a kind of multilink master clock switching device shifter, for grouping conveying network PTN device, described multilink belongs to same clock zone, described switching device shifter comprises: the first judge module, for according to the state information of the shake register in described PTN device and the data transmission information of current master clock link, judge whether to need to carry out master clock link switching; Select module, for when needs carry out master clock link switching, from the multilink except described current master clock link, select a link as new master clock link.
Above-mentioned multilink master clock switching device shifter, wherein, described first judge module comprises: the first judging unit, for according to the state information of shake register in the described PTN device got every Preset Time and the data transmission information of current master clock link, judge whether described current master clock link lost efficacy; Second judging unit, for when the number of times that described current master clock link lost efficacy continuously reaches preset times, judges to need to carry out master clock link switching.
Above-mentioned multilink master clock switching device shifter, wherein, the state information of described shake register comprises: shake register overflow or shake register underflow, when meeting the arbitrary condition in following condition, judge described current master clock link failure: as the data transmission information of shake register underflow or described current master clock link, the state information of described shake register shows that described current master clock link is current as the state information of shake register overflow, described shake register and do not transmit any data.
Above-mentioned multilink master clock switching device shifter, wherein, described selection module comprises: acquiring unit, for obtaining the data transmission information of the every bar link in the multilink except described current master clock link; Selected cell, for selecting the link of current transmission data as new master clock link from the multilink except described current master clock link.
Above-mentioned multilink master clock switching device shifter, wherein, described selected cell is further used for searching the link of current transmission data as new master clock link according to link number from next link of described current master clock link.
Present invention also offers a kind of PTN device, comprise multilink master clock switching device shifter as above.
The beneficial effect of technique scheme of the present invention is as follows:
The invention provides a kind of multilink master clock changing method, device and PTN device, judge that current master clock link is the need of switching according to business transmission situation in PTN network, and reselect master clock link when needs switch, thus avoid master clock link and frequently switch the problem causing service transmission quality to reduce.
Accompanying drawing explanation
Fig. 1 is PTN network configuration diagram.
The schematic flow sheet of the multilink master clock changing method that Fig. 2 provides for the embodiment of the present invention 1.
The schematic flow sheet of the multilink master clock changing method that Fig. 3 provides for the embodiment of the present invention 2.
Embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The embodiment of the present invention is in prior art, for the multilink belonging to same clock zone, when the clock recovery of master clock link goes wrong, need to reselect master clock link, and gravity treatment master clock link can reduce the problem of service transmission quality continually, provide a kind of multilink master clock changing method, device and PTN device, judge that current master clock link is the need of switching according to business transmission situation in PTN network, and reselect master clock link when needs switch, thus avoid master clock link and frequently switch the problem causing service transmission quality to reduce.
The multilink master clock changing method that the embodiment of the present invention 1 provides, for grouping conveying network PTN device, described multilink belongs to same clock zone, and as shown in Figure 2, described changing method comprises:
Step S200, according to the state information of the shake register in described PTN device and the data transmission information of current master clock link, judges whether to need to carry out master clock link switching;
Step S202, when needs carry out master clock link switching, selects a link as new master clock link from the multilink except described current master clock link.
In multilink master clock changing method provided by the invention, multilink belongs to same clock zone, a link in this multilink is as master clock link, clock recovery is carried out to this master clock link, and using the clock of recovery as the tranmitting data register of all links of this clock zone, according to the state information of the shake register in PTN device and the data transmission information of current master clock link, judge whether to need to carry out master clock link switching, and when needed, just carry out master clock link switching.Thus achieve the control of the handoff procedure to master clock link, avoid master clock link and frequently switch the problem causing service transmission quality to reduce.
Above-mentioned multilink master clock changing method, wherein, describedly judge whether that needing to carry out master clock link switching can be specially: according to the state information of the shake register in the described PTN device got every Preset Time and the data transmission information of current master clock link, judge whether described current master clock link lost efficacy; When the number of times that described current master clock link lost efficacy continuously reaches preset times, judge to need to carry out master clock link switching.
In multilink master clock changing method provided by the invention, link switching when adopting the method for statistics to judge whether to need to carry out main, namely a relevant information is obtained at regular intervals, whether lost efficacy according to this relevant information determination master clock link, when the number of times that master clock link continues to lose efficacy reaches pre-determined number, judge to need to carry out master clock link switching, otherwise think without the need to carrying out master clock link switching.Such as obtain a relevant information every 2S, if when the continuous information got for 8 times all shows master clock link failure, think and need to switch master clock link.Namely be not only obtain result according to primary information to master clock link the need of the judgement switched, but according to repeatedly acquisition of information result, thus avoid because sporadic problem causes the frequent switching of master clock link.
Above-mentioned multilink master clock changing method, wherein, the state information of described shake register comprises: shake register overflow or shake register underflow, when meeting the arbitrary condition in following condition, described current master clock link failure can be judged: as the data transmission information of shake register underflow or described current master clock link, the state information of described shake register shows that described current master clock link is current as the state information of shake register overflow, described shake register and do not transmit any data.
In multilink master clock changing method provided by the invention, judge whether master clock link occurs losing efficacy according to the up/down state of overflowing of the shake register of PSN side message and recovered clock, described by IETFRFC4553, in PTN network, use the message that shake register jitterbuffer buffer memory is come from PSN side.In the application scenarios that have employed adaptive clock recovery algorithm:
(1) if buffer occurs that overflow illustrates that the message data that the clock recovered sends than actual PSN side is slower, the message had little time in buffer is caused to send from line side, and there is overflow, namely cause business to be transmitted according to the clock of the current master clock link-recovery selected as tranmitting data register to go wrong, master clock link failure;
(2) if buffer occurs that underflow illustrates that the message data that the clock recovered sends than actual PSN side is faster, cause after the message in buffer all being sent, PSN does not also have enough time to send new message, and there is lower spilling, namely cause business to be transmitted according to the clock of the current master clock link-recovery selected as tranmitting data register to go wrong, master clock link failure;
(3) if PSN does not just have message data to arrive at all, namely the current master clock link selected does not have business data transmission, therefore, cannot carry out adaptive clock recovery according to this master clock link, master clock link failure yet.
When master clock link needs to switch, can from other links in the clock zone belonging to it, select a link as new master clock link, in order to avoid chosen new master clock link failure, therefore, above-mentioned multilink master clock changing method, wherein, describedly from the multilink except described current master clock link, a link is selected can to comprise as new master clock link: the data transmission information obtaining the every bar link in multilink except described current master clock link; From the multilink except described current master clock link, select the link of current transmission data as new master clock link.
The object of aforesaid operations is, avoids being chosen by the link of inefficacy as new master clock link.Before selecting, obtain the data transmission information of other links described, the current link not transmitting data is the link lost efficacy, and the link lost efficacy can not as new master clock link, therefore, new master clock link should be chosen from other links of current transmission data.
In aforesaid operations process, judge whether it lost efficacy according to the current data of whether transmitting of other links, certainly, in concrete implementation process, whether can to lose efficacy to other links according to other criterions and judge, can judge according to statistical method, for every bar link, every data transmission information obtaining link at regular intervals, when occurring that once this link does not transmit the situation of data in the time period of presetting one, judges this link failure.Such as, for other all links except master clock link in clock zone, every 2S run-down, scan 10 times altogether, used time is 20S, if in these 10 scanning results, occurs for certain link the situation once not transmitting data, then think this link failure, this link can not be chosen as new master clock link.
Above-mentioned multilink master clock changing method, wherein, the described link of current transmission data of selecting from the multilink except described current master clock link is specially as new master clock link: from next link of described current master clock link, search the link of current transmission data as new master clock link according to link number.
When selecting new master clock link, link number can be utilized as index, search, supposing in certain clock zone, there are 5 links, be numbered 1 respectively, 2,3,4,5.Current master clock link is numbered 2, once after link 2 inefficacy, search from link 3, find effective link as new master clock link always, if until again find link 2, do not find effective link yet, then still using link 2 as master clock link, namely do not carry out master clock link switching.
Certainly, in specific implementation process, various ways can be adopted select, be not limited to aforesaid way, it can be such as the link establishment failure logging (record) in clock zone, select the minimum link of Failure count as new master clock link according to failure logging (record), new master clock link can certainly be specified by user.
The schematic flow sheet of the multilink master clock changing method that Fig. 3 provides for the embodiment of the present invention 2, as shown in the figure, described changing method comprises:
Step S300, to the every bar link in clock zone and shake Register Scan 10 times, obtains the state information of shake register and the data transmission information of every bar link, every 2S run-down;
Step S302, adds up the link failure in 10 scanning;
Step S304, judges that master clock link is in 10 scanning processes, whether occurs 8 failure logging (record)s continuously, when present, enters step S306, otherwise, enter step S316;
Step S306, judges to need to carry out master clock link switching, searches the failure statistics situation of next link in this scanning record of current master clock link;
Step S308, judges whether this link lost efficacy, and when this link failure, enters step S310, otherwise enters step S314;
Step S310, searches the failure statistics situation of next link in this scanning record of this link;
Step S312, judges whether this link is current master clock link, if so, enters step S316, otherwise enters step S308;
Step S314, using this link as new master clock link;
Step S316, without the need to carrying out master clock link switching, continues to use this master clock link.
Present invention also offers a kind of multilink master clock switching device shifter, for grouping conveying network PTN device, described multilink belongs to same clock zone, described switching device shifter comprises: the first judge module, for according to the state information of the shake register in described PTN device and the data transmission information of current master clock link, judge whether to need to carry out master clock link switching; Select module, for when needs carry out master clock link switching, from the multilink except described current master clock link, select a link as new master clock link.
Above-mentioned multilink master clock switching device shifter, wherein, described first judge module comprises: the first judging unit, for according to the state information of shake register in the described PTN device got every Preset Time and the data transmission information of current master clock link, judge whether described current master clock link lost efficacy; Second judging unit, for when the number of times that described current master clock link lost efficacy continuously reaches preset times, judges to need to carry out master clock link switching.
Above-mentioned multilink master clock switching device shifter, wherein, the state information of described shake register comprises: shake register overflow or shake register underflow, when meeting the arbitrary condition in following condition, judge described current master clock link failure: as the data transmission information of shake register underflow or described current master clock link, the state information of described shake register shows that described current master clock link is current as the state information of shake register overflow, described shake register and do not transmit any data.
Above-mentioned multilink master clock switching device shifter, wherein, described selection module comprises: acquiring unit, for obtaining the data transmission information of the every bar link in the multilink except described current master clock link; Selected cell, for selecting the link of current transmission data as new master clock link from the multilink except described current master clock link.
Above-mentioned multilink master clock switching device shifter, wherein, described selected cell is further used for searching the link of current transmission data as new master clock link according to link number from next link of described current master clock link.
Present invention also offers a kind of PTN device, comprise multilink master clock switching device shifter as above.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (11)
1. a multilink master clock changing method, is characterized in that, for grouping conveying network PTN device, described multilink belongs to same clock zone, and described changing method comprises:
According to the state information of the shake register in described PTN device and the data transmission information of current master clock link, judge whether to need to carry out master clock link switching;
When needs carry out master clock link switching, from the multilink except described current master clock link, select a link as new master clock link.
2. changing method as claimed in claim 1, is characterized in that, described in judge whether that needing to carry out master clock link switching is specially:
According to the state information of the shake register in the described PTN device got every Preset Time and the data transmission information of current master clock link, judge whether described current master clock link lost efficacy;
When the number of times that described current master clock link lost efficacy continuously reaches preset times, judge to need to carry out master clock link switching.
3. changing method as claimed in claim 2, it is characterized in that, the state information of described shake register comprises: shake register overflow or shake register underflow, when meeting the arbitrary condition in following condition, judge described current master clock link failure:
The data transmission information that the state information of described shake register is shake register overflow, the state information of described shake register is shake register underflow or described current master clock link shows that described current master clock link is current and does not transmit any data.
4. changing method as claimed in claim 1, is characterized in that, described from the multilink except described current master clock link except a selection link comprise as new master clock link:
Obtain the data transmission information of the every bar link in the multilink except described current master clock link;
From the multilink except described current master clock link, select the link of current transmission data as new master clock link.
5. changing method as claimed in claim 4, is characterized in that, the described link of current transmission data of selecting from the multilink except described current master clock link is specially as new master clock link:
The link of current transmission data is searched as new master clock link according to link number from next link of described current master clock link.
6. a multilink master clock switching device shifter, is characterized in that, for grouping conveying network PTN device, described multilink belongs to same clock zone, and described switching device shifter comprises:
First judge module, for according to the state information of the shake register in described PTN device and the data transmission information of current master clock link, judges whether to need to carry out master clock link switching;
Select module, for when needs carry out master clock link switching, from the multilink except described current master clock link, select a link as new master clock link.
7. switching device shifter as claimed in claim 6, it is characterized in that, described first judge module comprises:
First judging unit, for according to the state information of shake register in the described PTN device got every Preset Time and the data transmission information of current master clock link, judges whether described current master clock link lost efficacy;
Second judging unit, for when the number of times that described current master clock link lost efficacy continuously reaches preset times, judges to need to carry out master clock link switching.
8. switching device shifter as claimed in claim 7, it is characterized in that, the state information of described shake register comprises: shake register overflow or shake register underflow, when meeting the arbitrary condition in following condition, judge described current master clock link failure:
The data transmission information that the state information of described shake register is shake register overflow, the state information of described shake register is shake register underflow or described current master clock link shows that described current master clock link is current and does not transmit any data.
9. switching device shifter as claimed in claim 6, it is characterized in that, described selection module comprises:
Acquiring unit, for obtaining the data transmission information of the every bar link in the multilink except described current master clock link;
Selected cell, for selecting the link of current transmission data as new master clock link from the multilink except described current master clock link.
10. switching device shifter as claimed in claim 9, it is characterized in that, described selected cell is further used for searching the link of current transmission data as new master clock link according to link number from next link of described current master clock link.
11. 1 kinds of PTN device, is characterized in that, comprise the multilink master clock switching device shifter as described in any one of claim 6-10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410362339.6A CN105306188A (en) | 2014-07-23 | 2014-07-23 | Multilink master clock switching method, device and PTN equipment |
| PCT/CN2014/089085 WO2015117387A1 (en) | 2014-07-23 | 2014-10-21 | Method and device for switching multi-link master clock, and ptn device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410362339.6A CN105306188A (en) | 2014-07-23 | 2014-07-23 | Multilink master clock switching method, device and PTN equipment |
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| CN105306188A true CN105306188A (en) | 2016-02-03 |
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| CN201410362339.6A Withdrawn CN105306188A (en) | 2014-07-23 | 2014-07-23 | Multilink master clock switching method, device and PTN equipment |
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| CN (1) | CN105306188A (en) |
| WO (1) | WO2015117387A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113141672A (en) * | 2021-04-08 | 2021-07-20 | 成都极米科技股份有限公司 | Link configuration method, device, system and storage medium in multi-link system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112422425B (en) * | 2020-10-10 | 2023-01-10 | 锐捷网络股份有限公司 | Line determining method, device, gateway equipment and storage medium |
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| CN101640578A (en) * | 2009-08-25 | 2010-02-03 | 北京邮电大学 | TDM service clock recovery method for packet transport network |
| CN101980463A (en) * | 2010-10-26 | 2011-02-23 | 中兴通讯股份有限公司 | Adaptive clock processing method and device in packet transport network |
| CN102487301A (en) * | 2010-12-01 | 2012-06-06 | 中兴通讯股份有限公司 | Method and device for recovering multilink clock |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103297216A (en) * | 2012-02-27 | 2013-09-11 | 中兴通讯股份有限公司 | Method and device for enabling equipment to achieve synchronization |
| CN103051493A (en) * | 2012-12-13 | 2013-04-17 | 中兴通讯股份有限公司 | Service clock determination method and device and packet transport network equipment |
-
2014
- 2014-07-23 CN CN201410362339.6A patent/CN105306188A/en not_active Withdrawn
- 2014-10-21 WO PCT/CN2014/089085 patent/WO2015117387A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640578A (en) * | 2009-08-25 | 2010-02-03 | 北京邮电大学 | TDM service clock recovery method for packet transport network |
| CN101980463A (en) * | 2010-10-26 | 2011-02-23 | 中兴通讯股份有限公司 | Adaptive clock processing method and device in packet transport network |
| CN102487301A (en) * | 2010-12-01 | 2012-06-06 | 中兴通讯股份有限公司 | Method and device for recovering multilink clock |
| WO2012071838A1 (en) * | 2010-12-01 | 2012-06-07 | 中兴通讯股份有限公司 | Multi-link clock recovery method and apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113141672A (en) * | 2021-04-08 | 2021-07-20 | 成都极米科技股份有限公司 | Link configuration method, device, system and storage medium in multi-link system |
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| WO2015117387A1 (en) | 2015-08-13 |
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Application publication date: 20160203 |