WO2014044190A1 - 以太网数据传输速率的调整方法及装置 - Google Patents
以太网数据传输速率的调整方法及装置 Download PDFInfo
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- WO2014044190A1 WO2014044190A1 PCT/CN2013/083771 CN2013083771W WO2014044190A1 WO 2014044190 A1 WO2014044190 A1 WO 2014044190A1 CN 2013083771 W CN2013083771 W CN 2013083771W WO 2014044190 A1 WO2014044190 A1 WO 2014044190A1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/25—Flow control; Congestion control with rate being modified by the source upon detecting a change of network conditions
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- 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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/14—Channel dividing arrangements, i.e. in which a single bit stream is divided between several baseband channels and reassembled at the receiver
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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
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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
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
Definitions
- the present invention relates to the field of communications, and in particular to a method and apparatus for adjusting an Ethernet data transmission rate.
- BACKGROUND Ethernet is the most widely used local area network, including standard Ethernet (10 Mbps), Fast Ethernet (100 Mbps), Gigabit Ethernet (1000 Mbps), etc., using carrier sense multiple access/collision detection with collision detection ( The Carrier Sense Multiple Access/Collision Detect (CSMA/CD) access control method is in compliance with the IEEE802.3 standard.
- CSMA/CD Carrier Sense Multiple Access/Collision Detect
- 10GBASE-T is an Ethernet specification using copper cable connection (6 types of shielded or unshielded twisted pair), the effective bandwidth of the data layer is 10Gbit/s, and the longest transmission distance is reachable. 100m. Since data is transmitted at a high speed of 10 GBps, the stability and reliability of data transmission is particularly important. At present, in the transmission process of Ethernet, if the unshielded twisted pair has a corresponding fault, such as one of the twisted pairs is damaged, the entire Ethernet communication link is broken, and the data can no longer be transmitted. However, with the increasing requirements for the stability and reliability of data transmission, especially in some important data transmissions, if the Ethernet communication link suddenly fails, the data transmission is interrupted, which is unacceptable to the user.
- the present invention provides a method and apparatus for adjusting an Ethernet data transmission rate to solve at least the above problems, in view of the problem in the related art that a data transmission link failure in an Ethernet network affects stable and reliable transmission of data.
- a method for adjusting an Ethernet data transmission rate is provided, the method comprising: monitoring a connection condition of a data transmission link; adjusting a rate of data transmission according to the monitored connection condition; Rate for data transfer.
- Adjusting the rate of data transmission in the Ethernet according to the monitored connection situation includes: negotiating the adjustment of the foregoing rate according to the monitored connection situation; and adjusting the foregoing rate of data transmission in the Ethernet according to the negotiation result.
- the negotiation of the foregoing rate adjustment includes: in the case that one or more links in the data transmission link are detected to be faulty, the negotiation determines to reduce the foregoing rate of data transmission in the Ethernet; In the event that one or more of the above-mentioned links that have failed to be detected are recovered, the negotiation determines to increase the above rate of data transmission in the Ethernet.
- Adjusting the foregoing rate of data transmission in the Ethernet according to the foregoing negotiation result includes: inserting an idle IDLE code stream into the code stream of the current data transmission to reduce the foregoing rate (the above-mentioned data transmission code stream) An IDLE code stream) / a rate of current data transmission of the code stream X of the above data transmission; in the case of negotiating and determining to increase the rate, extracting the IDLE code stream in the current data stream of the data transmission, increasing the rate to a full rate .
- the method further includes: performing data transmission according to the adjusted rate.
- Performing data transmission according to the adjusted rate includes: when monitoring the failure of one or more of the foregoing links, allocating data to be transmitted to the remaining normal links, and performing data transmission according to the reduced rate; When the one or more links that have failed to be recovered are recovered, the data to be transmitted is allocated to the current normal link, and the data is transmitted according to the increased rate.
- the foregoing connection situation of monitoring the foregoing data transmission link is implemented by one of the following methods: a signal echo mode, a near-end crosstalk mode, and a far-end crosstalk mode.
- an apparatus for adjusting an Ethernet data transmission rate comprising: a monitoring module configured to monitor a connection condition of a data transmission link; and an adjustment module configured to be monitored according to the monitoring module In the above connection situation, the rate of data transmission is adjusted; the transmission module is set to perform data transmission according to the adjusted rate of the above adjustment module.
- the foregoing adjustment module includes: a negotiating unit, configured to negotiate the adjustment of the rate according to the monitored connection situation; and the adjusting unit is configured to adjust the foregoing rate of data transmission in the Ethernet according to the negotiation result of the negotiating unit.
- the negotiating unit includes: a first negotiating subunit, configured to negotiate to determine to reduce the foregoing rate of data transmission in the Ethernet when detecting that one or more links in the data transmission link are faulty;
- the negotiation sub-unit is arranged to negotiate to determine to increase the above rate of data transmission in the Ethernet in the event that the one or more links that have failed to be detected are recovered.
- the adjusting unit includes: a first adjusting subunit, configured to insert an IDLE code stream into the current data transmission stream when the negotiation determines to reduce the rate, and reduce the rate to be (the data stream of the data transmission is idle) IDLE code stream) / the current data transmission rate of the data stream X of the above data transmission; the second adjustment subunit, configured to extract the IDLE code stream in the current data transmission stream stream when the negotiation determines to increase the rate Increase the above rate to full rate.
- the device further includes: a transmission module configured to perform data transmission according to the adjusted rate of the adjustment module.
- the foregoing transmission module includes: a first transmission unit configured to allocate data to be transmitted to the remaining normal links in the case that the one or more links are detected to be faulty, and perform data transmission according to the reduced rate And a second transmission unit configured to allocate the data to be transmitted to the current normal link in the case that the one or more links that have failed to be detected are recovered, and perform data transmission according to the increased rate.
- FIG. 1 is a flow chart of a method for adjusting an Ethernet data transmission rate according to an embodiment of the present invention
- FIG. 2 is a flow chart of Ethernet data transmission according to an embodiment of the present invention
- FIG. 4 is a schematic diagram of an Ethernet hierarchical structure according to an embodiment of the present invention
- FIG. 5 is a schematic diagram of a first mapping relationship of an Ethernet data packet according to an embodiment of the present invention
- Is a schematic diagram of a second mapping relationship of an Ethernet data packet according to an embodiment of the present invention
- 7 is a schematic diagram of a third mapping relationship of an Ethernet data packet according to an embodiment of the present invention
- FIG. 8 is a schematic diagram of a fourth mapping relationship of an Ethernet data packet according to an embodiment of the present invention
- FIG. 10 is a block diagram showing a specific structure of an apparatus for adjusting an Ethernet data transmission rate according to an embodiment of the present invention
- FIG. 11 is an Ethernet data transmission protection apparatus according to an embodiment of the present invention
- Schematic diagram of the structure
- the embodiment of the invention provides a method and a device for adjusting an Ethernet data transmission rate.
- the network connection link is continuously detected to determine the connection status of the link. If a certain signal line fails, the data is reduced.
- the transmission rate ensures the stability and reliability of the data transmission. After the link returns to normal, it is retransmitted at the normal rate.
- the embodiment provides a method for adjusting an Ethernet data transmission rate, and a flowchart of a method for adjusting an Ethernet data transmission rate, as shown in FIG. 1, the method includes the following steps (step S102 to step S104): Step S102, Monitoring the connection of the data transmission link in the Ethernet; Step S104, adjusting the data transmission rate in the Ethernet according to the monitored connection situation.
- Step S102 Monitoring the connection of the data transmission link in the Ethernet
- Step S104 adjusting the data transmission rate in the Ethernet according to the monitored connection situation.
- Monitoring the connection of the data transmission link is implemented by one of the following methods: signal echo mode, near-end crosstalk mode, and far-end crosstalk mode. Which method is used can be determined according to the actual situation, as long as the link connection can be monitored. Of course, the above monitoring may be performed periodically or irregularly, depending on the actual situation.
- the access control layer (Medium Access Control, MAC for short) sends information to the PHY layer (physical layer), and then transmits the data to the peer PHY layer through the twisted pair.
- the peer PHY layer and the peer MAC layer are exchanged.
- the link is monitored by means of signal echo. Assuming that there are two non-screened twisted pairs without echo, the twisted pair link is broken.
- the local end sends the detection result to the peer end through the other three pairs of normal non-screening twisted pair transmission links. After receiving the link detection result of the local end, the peer end transmits the signal to the 3/4 rate level through the MAC layer. After the local end receives the relevant result, the local end adjusts the local Ethernet transmission rate according to the received link detection result.
- the present embodiment provides a preferred implementation manner, that is, adjusting the data transmission rate in the Ethernet according to the monitored connection situation, including: adjusting the rate adjustment according to the monitored connection situation; adjusting according to the negotiation result The rate of data transfer in Ethernet.
- the negotiation of the rate adjustment includes: in the case that one or more links in the data transmission link are detected to be faulty, the negotiation determines to reduce the rate of data transmission in the Ethernet; In the event that one or more links of the failure are recovered, the negotiation determines to increase the rate of data transmission in the Ethernet.
- the rate adjustment method can be determined more reasonably, effectively, and specifically.
- various implementation manners can be adopted as long as the rate can be adjusted accordingly.
- This embodiment provides a preferred implementation manner, that is, the rate is reduced by inserting an IDLE (idle) code stream into the code stream of the data transmission.
- adjusting the rate of data transmission in the Ethernet according to the negotiation result includes: In the case of negotiating to determine the rate of decrease, the IDLE code stream is inserted into the code stream of the current data transmission, and the rate is reduced (the code stream of the data transmission - the IDLE code stream) / the current data transmission rate of the data stream X of the data transmission; In the case of negotiating and determining the rate of increase, the IDLE code stream is extracted in the code stream of the current data transmission, and the above rate is increased to a full rate. Assuming that the code stream of the data transmission is M and the inserted IDLE code stream is N, the reduced rate is (MN) / Mx pre-adjustment rate.
- the data transmission is performed according to the adjusted rate.
- the data to be transmitted is allocated to the remaining normal links.
- the reduced rate is used for data transmission; in the case that the one or more links that have failed to be recovered are recovered, the data to be transmitted is allocated to the current normal link, and the data is transmitted according to the increased rate.
- the data transmission method introduced in this embodiment is mainly applied in the Ethernet transmission process, especially 10G-BASE.
- Step S202 by monitoring the Ethernet transmission link, confirming The link connection status between the local end and the peer end.
- the local and remote ends of Ethernet 10GBASE-T are generally connected by four pairs of non-screen shielded twisted pairs.
- the detection method is not limited.
- the signal echo may be used, that is, if the signal is sent, there is no echo, indicating that the link is broken.
- Step S204 According to the connection status of the link, the local end and the opposite end perform corresponding information negotiation. If the link connection condition is that there is no link break, step S206 is performed. If one link is broken, step S208 is performed. If there are two links broken, step S210 is performed, if there are three links broken. Then, step S212 is performed. If there are four links broken, step S214 is performed. For example, by using the data transmission link in FIG.
- the MAC of the local end sends information to the PHY layer, and then transmits the information to the PHY layer of the opposite end through the twisted pair, and exchanges information between the PHY layer and the opposite MAC layer of the opposite end. If the detection link is abnormal, the data is exchanged by using the remaining normally connected non-screened twisted pair cable, and the link information is sent to the peer end through the local end. The peer then sends the relevant information, as well as the need to slow down and the corresponding slowdown level information to the local end. In step S206, no link is broken, and data transmission is performed at a normal rate. In step S208, one link is broken, the local end and the opposite end transmit data at a rate of 3/4, and a warning is issued.
- Step S210 two links are broken, and the local end and the opposite end are 1/2.
- the data is transmitted at the rate, and the notification is sent.
- Step S212 three links are broken, the local end and the opposite end transmit data at a rate of 1/4, and the notification is sent.
- Step S214 and four links are broken.
- the local end and the peer end stop data transmission and issue a fault alarm.
- 4 is a schematic diagram of an Ethernet hierarchy according to an embodiment of the present invention. As shown in FIG. 4, an interface between an Ethernet MAC layer and a PHY layer (including a PCS layer and a PMA layer) is a *GMI interface, and the rate is fixed, if it is XGMII.
- the rate is 10G, if it is GMII, the rate is 1G, and the interface rate of PMA and Medium is also Fixed, in order to achieve the purpose of reducing the rate, the following methods can be used: Take a large FIFO at the PCS layer to buffer the data, enable the MAC to control the interval for sending data, and insert an IDLE code at the PCS layer. Assuming that the data transmission code stream is M and the inserted IDLE code stream is N, the reduced rate is (MN) / Mx pre-adjustment rate.
- FIG. 5 is a schematic diagram of a first mapping relationship of an Ethernet data packet according to an embodiment of the present invention. As shown in FIG.
- the input 4 equal-part data is counter-typed at a counter of 1, 2, 3, 4 cycles, the counter is 1, then it is transmitted on the first road with normal line; if the counter is 2, it is transmitted on the second road with normal line; if the counter is 3, it is transmitted on the 3rd line with normal line; Counter If it is 4, it will be transmitted on the 4th road with normal line.
- 6 is a schematic diagram of a second mapping relationship of an Ethernet data packet according to an embodiment of the present invention. As shown in FIG. 6, if one of the links fails, the input 4 aliquot data is countered by a counter mode.
- FIG. 7 is a schematic diagram of a third mapping relationship of an Ethernet data packet according to an embodiment of the present invention. As shown in FIG. 7, if two links are faulty, the input 4 equal-part data is counter mode counter. In the 1, 2, 3, 4 cycle, the counter is 1, 3, then the first line is transmitted on the normal line; the counter is 2, 4 is transmitted on the second line with the line normal. 8 is a schematic diagram of a fourth mapping relationship of an Ethernet data packet according to an embodiment of the present invention. As shown in FIG.
- the input 4 equal-part data is mapped to a unique normal. Transfer along the way.
- the following describes the data transmission method by taking 10GBASE-T Ethernet data transmission as an example.
- 10GBASE-T Ethernet data transmission VIP users access important videos stored in the server through Ethernet.
- the local end and the opposite end of the data transmission simultaneously detect the link.
- the method of online echo, near-end crosstalk and far-end crosstalk cancellation detection is adopted, and it is assumed that there are two non-screen shielded twisted pairs without echo.
- the twisted pair link is broken.
- the local end sends the detection result of the other three pairs of normal non-screening twisted pair transmission links to the opposite end.
- the peer end After receiving the link detection result of the local end, the peer end performs the speed reduction to the 3/4 rate level signal through the MAC layer. After returning to the local end, the local end receives the relevant result. The local end adjusts the local Ethernet transmission rate according to the received link detection result.
- the local and the peer are transmitted at a rate of 1/2, and further to the link. Test. If two of the links fail, the local end and the peer end transmit at a rate of 1/2, and according to the Ethernet packet mapping diagram, the input 4 equals the data by the counter mode counter at 1, 2 Loop, the counter is 1, then it is transmitted on the first road with normal line.
- FIG. 9 is a structural block diagram of an apparatus for adjusting an Ethernet data transmission rate according to an embodiment of the present invention. As shown in FIG. 9, the apparatus includes: a monitoring module 10 and an adjustment module 20. The structure will be specifically described below.
- the monitoring module 10 is configured to monitor the connection status of the data transmission link in the Ethernet; the adjustment module 20 is connected to the monitoring module 10, and is configured to adjust the data transmission rate in the Ethernet according to the connection situation monitored by the monitoring module.
- the monitoring module 10 monitors the data transmission link, and then the adjustment module 20 adjusts the data transmission rate according to the monitored link connection situation, and solves the related art in the data transmission link failure in the Ethernet to affect the data.
- the problem of stable and reliable transmission greatly improves the stability and reliability of data transmission and improves the user experience.
- FIG. 10 is a block diagram showing a specific structure of an apparatus for adjusting an Ethernet data transmission rate according to an embodiment of the present invention. As shown in FIG. 10, the apparatus further includes: in addition to the modules in FIG.
- the unit 22 is configured to negotiate the adjustment of the rate according to the monitored connection situation; the adjusting unit 24 is connected to the negotiating unit 22, and is configured to adjust the foregoing rate of data transmission in the Ethernet according to the negotiation result of the negotiating unit.
- Monitoring the connection of the data transmission link is implemented by one of the following methods: signal echo mode, near-end crosstalk mode, and far-end crosstalk mode. After the connection of the data transmission link is monitored, the local end of the data transmission interacts with the peer end to perform the Ethernet link.
- the negotiating unit 22 includes: Negotiating the subunit, configured to negotiate to determine to reduce the above rate of data transmission in the Ethernet when monitoring that one or more links in the data transmission link are faulty; the second negotiation subunit, In the event that one or more of the above-described links that have failed to be detected are recovered, the negotiation determines to increase the above rate of data transmission in the Ethernet. After the local end and the opposite end negotiate, the rate is adjusted according to the negotiation result, that is, the adjusting unit 24 includes: a first adjusting subunit, configured to insert in the current data transmission stream when the negotiation determines to reduce the rate.
- the device further includes a transmission module, and is configured to perform data according to the adjusted rate of the adjustment module. transmission.
- the transmission module includes: a first transmission unit, configured to allocate data to be transmitted to the remaining normal links when the one or more links are detected to be faulty, and perform data transmission according to the reduced rate;
- the second transmission unit is configured to allocate the data to be transmitted to the current normal link in the case that the one or more links that have failed to be detected are recovered, and perform data transmission according to the increased rate.
- FIG. 11 is a schematic structural diagram of an Ethernet data transmission protection apparatus according to an embodiment of the present invention. As shown in FIG. 11, the apparatus includes an Ethernet detection module, an Ethernet negotiation module, and an Ethernet rate dynamic adjustment module.
- the Ethernet detection module has the same function as the monitoring module in the above embodiment, and is configured to detect the link of the Ethernet transmission process to determine whether the relevant link is connected.
- the Ethernet negotiation module has the same function as the negotiation unit in the foregoing embodiment, and is configured to perform information interaction between the local end and the opposite end of the Ethernet, and the MAC layer and the PHY layer link interact.
- the Ethernet rate dynamic adjustment module has the same function as the adjustment module in the above embodiment, and is configured to dynamically adjust the Ethernet transmission rate according to the connectivity of the Ethernet-related link to ensure stable and reliable data transmission.
- the present invention determines the link connection condition by continuously detecting the link. If a certain signal line in the Ethernet fails, the local end and the opposite end perform an Ethernet link. The situation is interactive, and the method of reducing the data transmission speed is adopted to ensure reliable transmission of data.
- modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
- the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
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Priority Applications (3)
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JP2015532290A JP6639232B2 (ja) | 2012-09-20 | 2013-09-18 | イーサネットデータ伝送レートの調整方法及び装置 |
US14/430,204 US9705809B2 (en) | 2012-09-20 | 2013-09-18 | Method and device for adjusting rate of data transmission in Ethernet |
EP13839539.7A EP2899923A4 (en) | 2012-09-20 | 2013-09-18 | METHOD AND DEVICE FOR ADJUSTING THE ETHERNET DATA TRANSMISSION RATE |
Applications Claiming Priority (2)
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CN201210351613.0 | 2012-09-20 | ||
CN201210351613.0A CN103684672A (zh) | 2012-09-20 | 2012-09-20 | 以太网数据传输速率的调整方法及装置 |
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WO (1) | WO2014044190A1 (zh) |
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CN105100681B (zh) * | 2014-04-28 | 2018-09-28 | 浙江大华技术股份有限公司 | 视频矩阵级联控制方法、装置及系统 |
GB201518176D0 (en) * | 2015-10-14 | 2015-11-25 | Mood Entpr Ltd | Method and system for causal relationship discovery and analysis |
US10536366B1 (en) * | 2018-09-13 | 2020-01-14 | Charter Communication Operating, LLC | Methods and apparatus for controlling and making link bundle advertisements to support routing decisions |
CN114499674A (zh) * | 2021-12-24 | 2022-05-13 | 华为技术有限公司 | 一种光路配置方法、设备及系统 |
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- 2013-09-18 WO PCT/CN2013/083771 patent/WO2014044190A1/zh active Application Filing
- 2013-09-18 JP JP2015532290A patent/JP6639232B2/ja active Active
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US20150229571A1 (en) | 2015-08-13 |
EP2899923A4 (en) | 2015-10-07 |
CN103684672A (zh) | 2014-03-26 |
JP6639232B2 (ja) | 2020-02-05 |
JP2015534363A (ja) | 2015-11-26 |
EP2899923A1 (en) | 2015-07-29 |
US9705809B2 (en) | 2017-07-11 |
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