WO2011158431A1 - 経路制御装置及び経路制御方法 - Google Patents
経路制御装置及び経路制御方法 Download PDFInfo
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- WO2011158431A1 WO2011158431A1 PCT/JP2011/002757 JP2011002757W WO2011158431A1 WO 2011158431 A1 WO2011158431 A1 WO 2011158431A1 JP 2011002757 W JP2011002757 W JP 2011002757W WO 2011158431 A1 WO2011158431 A1 WO 2011158431A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
- H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/302—Route determination based on requested QoS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
Definitions
- the present invention relates to a route control device and a route control method, and more particularly to a route control device for setting a route using a radio link and a route control method using the route control device.
- a network constructed by wireless links such as fixed wireless access (FWA) using a wireless system using a frequency such as a millimeter wave band capable of broadband transmission is used in a cellular phone network or the like.
- FWA fixed wireless access
- the communication quality of the radio link varies depending on the SNR (Signal to Noise Ratio) of the received signal.
- SNR Signal to Noise Ratio
- adaptive modulation techniques are used to realize a wider bandwidth of the radio link.
- the adaptive modulation technique is a technique that adaptively finds and uses a modulation mode with the highest transmission efficiency from the radio condition of the radio link. By using the adaptive modulation technique, it is possible to perform optimal wireless communication according to the wireless environment, and an improvement in frequency efficiency can be expected.
- the modulation mode to be used in the future by each wireless link can be predicted, the communication quality of traffic flowing through the network can be guaranteed.
- An example of a radio link using an adaptive modulation technique is disclosed in JP-T-2006-505221. As shown in this document, in a radio link using an adaptive modulation technique, a modulation mode used in the future may have some correlation with a past history. Therefore, it is possible to predict (estimate) the modulation mode used by the radio link.
- Non-Patent Document 1 exists.
- Patent Document 1 and Non-Patent Document 1 when the techniques disclosed in Patent Document 1 and Non-Patent Document 1 are used, the following problems occur.
- a modulation mode to be used in the future by each radio link is predicted and route setting is performed using stability predicted or estimated based on the predicted modulation mode, only the stability known at the time of route setting is used. For this reason, when the stability of each link band changes due to a change in environment or the like, there arises a problem that it is impossible to add or delete a redundant path depending on the situation.
- the present invention has been made to solve such a problem, and provides a path control device and a path control method capable of adaptively responding to network changes such as traffic changes and link quality changes.
- the purpose is to do.
- a route control device is a route control device that sets a communication route using a plurality of wireless links that connect a plurality of communication devices, and each of the plurality of wireless links includes a plurality of wireless links.
- a link information management unit for managing the first communication quality, a traffic information management unit for managing a traffic situation flowing through the plurality of radio links, and at least one of a change in the first communication quality and a change in the traffic situation A path setting unit configured to set the path of the flow so that the first communication quality satisfies the second communication quality required by the flow flowing through the wireless link.
- a path control method is a path control method for setting a communication path using a plurality of radio links that connect a plurality of communication devices, and each of the plurality of radio links Based on at least one of a change in the first communication quality and a change in the traffic situation flowing through the plurality of radio links, the first communication quality is a second communication quality required by a flow flowing through the radio link. Setting a route of the flow so as to satisfy the condition.
- FIG. 1 is a configuration diagram of a path control device according to a first exemplary embodiment; 1 is a network configuration diagram according to a first exemplary embodiment; 1 is a configuration diagram of a path control device according to a first exemplary embodiment; 1 is a network configuration diagram according to a first exemplary embodiment; FIG. 3 is a diagram illustrating a reserved band and stability in each modulation scheme according to the first exemplary embodiment.
- 1 is a configuration diagram of a communication apparatus according to a first embodiment.
- FIG. 5 is a diagram illustrating a flow of a flow setting process according to the first embodiment.
- FIG. 10 is a diagram illustrating a flow of a flow setting process according to the second exemplary embodiment.
- FIG. 10 is a diagram illustrating a flow of flow setting processing according to the third exemplary embodiment;
- the route control device 10 includes a link information management unit 11, a traffic information management unit 12, and a route setting unit 13.
- the route control device 10 sets a communication route using a plurality of wireless links that connect a plurality of communication devices. Therefore, the path control device 10 is connected to each communication device. The route control device 10 notifies the set communication route to each communication device.
- the link information management unit 11 manages each communication quality in a plurality of wireless links.
- the communication quality of the wireless link changes due to changes in weather conditions. Therefore, the link information management unit 11 acquires the communication quality of the radio link via the communication device in which the radio link is set.
- the link information management unit 11 outputs the communication quality of the managed radio link to the route setting unit 13.
- the traffic information management unit 12 manages the traffic situation flowing through the radio link.
- the communication device transmits and receives data via a wireless link.
- the amount of data transmitted / received in the wireless link varies depending on the increase / decrease in the number of flows set by the communication device.
- the traffic information management unit 12 acquires information on increase / decrease in the number of flows set in the communication device from the communication device. Or you may acquire the information regarding the increase / decrease in the number of flows set to a communication apparatus from the path
- the traffic information management unit 12 outputs information managed regarding the traffic situation flowing through the radio link to the route setting unit 13.
- the path setting unit 13 determines that the communication quality of the radio link is The flow path is set so that the flow that flows through the network satisfies the required communication quality.
- the flow flowing between the communication devices requires a predetermined communication quality.
- the required communication quality differs for each flow.
- the path setting unit 13 is already set when it detects a change in communication quality or a change in traffic status of a radio link to which a flow is set, or a change in communication quality and a change in traffic situation of a radio link.
- the path of the flow is reset so as to satisfy the communication quality required by the flow being processed.
- the flow path is set so that the newly set flow satisfies the required communication quality.
- the path control device 10 As described above, by using the path control device 10 according to the first exemplary embodiment of the present invention, it is possible to adaptively change the flow path even when the communication quality of the radio link changes or the traffic situation changes. Can be controlled.
- Each of the communication devices 21 to 24 transmits / receives data to / from other communication devices via a wireless link.
- the communication devices 21 to 24 are connected in a full mesh, but for example, a configuration in which some sections are not connected, such as a connection between the communication devices 21 and 22, is not used. Good.
- positioned in a partial area may be used.
- the route control device 10 is connected to the communication devices 21 to 24.
- a wireless link or a wired cable may be used.
- the route control device 10 manages the entire network and executes reception or termination of a new flow.
- the path control device 10 periodically acquires information on the communication quality of the radio link from the communication devices 21 to 24.
- the communication quality includes a bit error rate or a modulation method used.
- the communication devices 21 to 24 transmit data using an adaptive modulation technique that adaptively selects a modulation scheme according to the communication quality of the radio link.
- an adaptive modulation technique that adaptively selects a modulation scheme according to the communication quality of the radio link.
- QPSK QPSK
- 16QAM 16QAM
- 32QAM 32QAM
- 64QAM 64QAM
- the communication quality of the radio link varies depending on the SNR received by the communication devices 21 to 24.
- the route control device 10 includes a link information management unit 11, a traffic information management unit 12, a route setting unit 13, a topology information management unit 14, and a communication unit 15. Since the link information management unit 11, the traffic information management unit 12, and the route setting unit 13 are the same as those in FIG. 1, they will be described with the same reference numerals.
- the link information management unit 11 performs information management of radio links provided between the communication devices 21 to 24.
- the wireless link information includes a bit error rate of a flow that flows through each link, a modulation scheme used, stability for each modulation scheme, and the like. Here, the stability for each modulation method will be described.
- Stability is an index indicating the probability that each modulation method can be used. That is, the stability indicates how stably the band of the radio link that changes due to adaptive modulation can be used. A method for calculating the stability will be specifically described.
- the modulation mode used in a certain radio link is QPSK, 16QAM, 32QAM, or 64QAM.
- the modulation mode used by the radio link and the usage time thereof were 64 QAM for 2 hours, 32 QAM for 1 hour, and 16 QAM for 1 hour.
- the stability in each modulation mode is the ratio of each modulation mode occupied by the modulation mode equal to or higher than that modulation mode
- the link information management unit 11 periodically updates the radio link information.
- the traffic information management unit 12 manages information on flows flowing through the network.
- the flow information includes information indicating the used bandwidth for each flow in a certain wireless link and where and how much traffic flows through the wireless link.
- the topology information management unit 14 manages network topology information.
- the topology information includes information related to connection relationships between communication devices.
- the route setting unit 13 sets the route of each flow using the information output from the link information management unit 11, the traffic information management unit 12, and the topology information management unit 14. The route of the flow determined by the route setting unit 13 is notified to each communication device via the communication unit 15.
- the network configuration in FIG. 4 includes a path control device 10 and communication devices 31 to 33.
- a wireless link that connects the communication device 31 and the communication device 32 is a wireless link 41
- a wireless link that connects the communication device 31 and the communication device 33 is a wireless link 42
- a wireless link that connects the communication device 32 and the communication device 33 is a wireless link 43.
- FIG. 5 shows the stability of each modulation method in the radio links 41 to 43 and the bandwidth that can be secured in each modulation method.
- the modulation method is QPSK
- a band of 40 Mbps can be secured and the stability is 100%.
- the modulation method is 16QAM
- a band of 40 Mbps can be further secured as compared with QPSK. That is, when the modulation method is 16QAM, a total bandwidth of 80 Mbps can be secured.
- a band can be secured using QPSK or 16 QAM up to 40 Mbps, but a band of 41 Mbps or more and 80 Mbps or less needs to use 16 QAM.
- the modulation method is 16QAM
- the stability is 80%.
- the modulation method is 32QAM
- a band of 28 Mbps can be secured as compared with 16QAM. That is, a total bandwidth of 108 Mbps can be secured.
- the modulation method is 32QAM
- the stability is 50%.
- a 30 Mbps flow A that requires 95% communication quality uses 30 Mbps of 40 Mbps that can be secured by QPSK in the wireless links 41 and 43, and communicates. It flows between the device 31 and the communication device 33.
- (2) 30 Mbps flow B requiring 90% communication quality uses 30 Mbps of 40 Mbps that can be secured by 16QAM of the wireless link 42 as a normal route, and the wireless links 41 and 43 as redundant routes Similarly, 30 Mbps of the bandwidth that can be secured by 16QAM is used and flows between the communication devices 31 and 33.
- the path control apparatus 10 extracts a flow that does not require a redundant path due to an improvement in stability, among the flows using the wireless link 42.
- the flow B satisfies the communication quality 90% required by the flow B when 30 Mbps is used.
- the route setting unit 13 can delete the wireless links 41 and 43 which are redundant routes set in the flow B.
- the route setting unit 13 newly sets a redundant route that uses 30 Mbps of bandwidth that can be secured by 16QAM of the wireless link 42 as a redundant route in the flow A.
- Flow A can maintain a route that satisfies the communication quality requirement of flow A by providing a redundant route.
- the communication device 50 is the same as the communication devices 21 to 24 in FIG. 2 and the communication devices 31 to 33 in FIG.
- the communication device 50 includes a resource management unit 51, a traffic control unit 52, and a communication unit 53.
- the resource management unit 51 manages information related to the flow.
- the information related to the flow is the allocated bandwidth of the flow using the wireless link, the transfer destination of the flow, and the like.
- the resource management unit 51 stores the resource allocation information notified from the route control device 10.
- the traffic control unit 52 performs traffic control based on the information stored in the resource management unit 51 and outputs data from the communication unit 53.
- the resource management unit 51 monitors the communication unit 53 and, when detecting a change in the link quality of the radio link, notifies the route control device 10 of the information.
- the route setting unit 13 receives a notification of a change in the quality of the radio link from the link information management unit 11 that manages the quality information of the radio link (S11). Specifically, the route setting unit 13 receives a notification from the link information management unit 11 regarding a change in stability in each band of the radio link.
- the path setting unit 13 determines whether or not the stability of each band in the wireless link has been improved (S12). If the route setting unit 13 determines that the stability has improved, the route setting unit 13 extracts a flow using the redundant route from the list of flows managed by the traffic information management unit 12 (S13).
- the path setting unit 13 determines whether there is a flow that does not require a redundant path in order to satisfy the communication quality required by the flow (S14).
- the path setting unit 13 ends the process when there is no flow that does not require a redundant path.
- the route setting unit 13 notifies the communication device to delete the redundant route in the flow (S15).
- the deleted redundant route can be used for traffic having a lower priority than the flow in which the redundant route is unnecessary, such as best effort traffic, so that it can be used again when the stability of the bandwidth decreases. Good.
- the deleted redundant path can be used preferentially as needed by the corresponding flow.
- step S12 if the path setting unit 13 determines that the stability has decreased, the flow setting unit 13 extracts a flow that cannot maintain the communication quality required by the flow from the list of flows managed by the traffic information management unit 12. (S16).
- the path setting unit 13 determines whether or not the communication quality required by the flow can be maintained by changing the allocated bandwidth or setting the redundant path for the extracted flow (S17). If the path setting unit 13 determines that the communication quality required by the flow cannot be maintained even if the allocated bandwidth is changed or the redundant path setting is used, the process ends. If the path setting unit 13 determines that the communication quality required by the flow can be maintained by changing the allocated band or using the redundant path setting, the path setting unit 13 performs the band reallocation or the redundant path setting to the communication device. (S18).
- the path control device As described above, by using the path control device according to the first exemplary embodiment of the present invention, it is possible to reset the optimal path of the flow according to the change in the communication quality of the radio link.
- the communication quality of the flow can be maintained even if the stability is lowered after the route is set by changing the allocated bandwidth or setting the redundant route.
- the redundant route is deleted if the communication quality required by the flow is satisfied.
- the available bandwidth can be used by other best effort traffic, thereby improving the network utilization efficiency.
- a 30 Mbps flow D requiring 95% communication quality flows between the communication device 31 and the communication device 33 using 30 Mbps of 40 Mbps that can be secured by QPSK in the wireless links 41 and 43. Yes.
- (3) 30 Mbps flow F requiring 90% communication quality uses 30 Mbps of the bandwidth that can be secured by 16QAM of the wireless link 42 as a normal route, and 16QAM in the wireless links 41 and 43 as redundant routes
- the communication apparatus 31 and 33 use 30 Mbps of the bandwidth that can be secured in the network.
- the route control device 10 checks whether there is another flow that uses the wireless link 42 and that does not require a redundant route by allocating the released band.
- the path control device 10 reassigns the bandwidth 30 Mbps secured by QPSK to the flow F using the wireless link 42.
- the flow F can secure a route having a communication quality of 90% or more without a redundant route. Therefore, the path control device 10 notifies the communication devices 31 and 33 of the change of the allocated bandwidth of the flow F and the deletion of the redundant route of the flow F to the communication devices 31 to 33.
- the bandwidth secured by 16QAM used as the redundant path of the flow F in the wireless links 41 and 43 can be allocated to a new flow.
- the route setting unit 13 receives an end notification of an existing flow from the communication device (S21).
- the route setting unit 13 acquires information on a band released when the existing flow is terminated from the traffic information management unit 12. Further, the flow using the radio link of the released band is extracted from the link information management unit 11 (S22).
- the path setting unit 13 determines whether or not a redundant path can be deleted by assigning a free band to the extracted flow (S23).
- the route setting unit 13 ends the process when there is no flow that can delete the redundant route. If it is determined that there is a flow that can delete the redundant route, the route setting unit 13 notifies the communication device of the change of the allocated bandwidth for the corresponding flow and the deletion of the redundant route (S24). Further, the route setting unit 13 updates information on the link information management unit 11 and the traffic information management unit 12.
- the path control device As described above, by using the path control device according to the second exemplary embodiment of the present invention, it is possible to reset the optimal path of the flow according to a change in the traffic status of the radio link.
- a redundant route can be deleted by using the free bandwidth after the flow is completed, the bandwidth used in the redundant route can be used for best effort traffic, and the network utilization efficiency can be further improved. Can do.
- FIG. 4 showing the network configuration and the stability of each modulation scheme in the radio links 41 to 43 and FIG. 5 showing the band that can be secured are used in the description of the second embodiment of the present invention.
- a 30 Mbps flow G requiring 95% communication quality flows between the communication device 31 and the communication device 33 using 30 Mbps of 40 Mbps that can be secured by QPSK in the wireless links 41 and 43. Yes.
- the flow H it is determined whether the flow H can be reassigned from the bandwidth that can be secured by QPSK to the bandwidth that can be secured by 16QAM while satisfying the quality required by the flow H.
- the communication quality required by the flow H cannot be satisfied.
- the path control device 10 changes the allocated band and sets the redundant path for the flow H, and releases the band that can be secured by QPSK of the radio link 42. Then, as a flow I route, a route that uses a band with 100% stability that can be secured by QPSK of the wireless link 42 is set. Thereby, the network can newly accommodate the flow I while maintaining the communication quality of the flow H at a certain level or higher.
- the path setting unit 13 accepts a high-priority flow, but determines that there is no available bandwidth and a path cannot be set (S31).
- the path setting unit 13 extracts a radio link in which there is a band to which a high priority flow can be allocated, but the stability of the band does not satisfy the stability required by the high priority flow (S32). ).
- the route setting unit 13 extracts from the link information management unit 11 an existing flow that uses a stability band required by the high priority flow (S33).
- the route setting unit 13 acquires the flow information from the link information management unit 11 and the topology information from the topology information management unit 14, and sets the existing flow to a low stability band by setting a redundant route or the like. It is determined whether or not it is possible (S34).
- the route setting unit 13 determines that the path cannot be set to the existing flow with a low stability band, the process ends.
- the route setting unit 13 determines that the route can be set in the low-stability band for the existing flow, the route setting for the high-priority new flow is performed (S35), and the new flow is accommodated (S36).
- the path control device As described above, by using the path control device according to the third embodiment of the present invention, it becomes possible to accommodate a new high priority flow while maintaining the communication quality of the existing flow. Furthermore, even when it is necessary to prepare a redundant path to satisfy the communication quality required by the newly added flow as it is accommodated, it is newly added by changing the bandwidth allocation to the existing flow. Flows can be accommodated without redundant paths.
- the present invention is applicable to a route control device that sets a route using a wireless link.
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Abstract
Description
以下、図面を参照して本発明の実施の形態について説明する。図1を用いて本発明の実施の形態1にかかる経路制御装置の構成例について説明する。経路制御装置10は、リンク情報管理部11と、トラヒック情報管理部12と、経路設定部13と、を備えている。
続いて、本発明の実施の形態2にかかるフロー設定の動作について説明する。本発明の実施の形態2においては、既存フローの終了により空いた帯域を用いることで既存フローの冗長経路を削除する動作について説明する。なお、ネットワーク構成を示す図4及び無線リンク41~43における各変調方式の安定度と確保できる帯域とを示す図5を本発明の実施の形態2の説明にも用いる。
続いて、本発明の実施の形態3にかかるフロー設定の動作について説明する。本発明の実施の形態3においては、新たに高優先フローの収容が必要になった場合の動作について説明する。なお、ネットワーク構成を示す図4及び無線リンク41~43における各変調方式の安定度と、確保できる帯域を示す図5とを本発明の実施の形態2の説明に用いる。
11 リンク情報管理部
12 トラヒック情報管理部
13 経路設定部
14 トポロジー情報管理部
15 通信部
21~24 通信装置
31~33 通信装置
50 通信装置
51 リソース管理部
52 トラヒック制御部
53 通信部
Claims (10)
- 複数の通信装置間を接続する複数の無線リンクを用いた通信経路の設定を行う経路制御装置であって、
前記複数の無線リンクにおけるそれぞれの第1の通信品質を管理するリンク情報管理手段と、
前記複数の無線リンクを流れるトラヒック状況を管理するトラヒック情報管理手段と、
前記第1の通信品質の変化及び前記トラヒック状況の変化のうち少なくとも一方に基づいて、前記通信経路における前記第1の通信品質が、前記無線リンクを流れるフローが要求する第2の通信品質を満たすように、前記フローの通信経路を設定する経路設定手段と、を備える経路制御装置。 - 前記無線リンクは、適応変調により複数の変調方式が用いられ、前記第1の通信品質は、前記変調方式毎に定められる、請求項1記載の経路制御装置。
- 前記経路設定手段は、
前記フローに対して、前記フローに用いられる変調方式に応じて定まる帯域を割り当てる、請求項1又は2記載の経路制御装置。 - 前記経路設定手段は、
前記フローに設定した通常経路が、当該フローが要求する通信品質を満たさない場合、さらに冗長経路を設定する、請求項1乃至3のいずれか1項に記載の経路制御装置。 - 前記経路設定手段は、
前記通常経路の前記第1の通信品質が向上し、前記通常経路のみを使用することにより前記冗長経路が設定されたフローが要求する第2の通信品質を満たす場合、当該フローに設定された冗長経路を削除し
前記通常経路の前記第1の通信品質が劣化し、前記通常経路のみが設定された前記フローが要求する第2の通信品質を満たさなくなる場合、当該フローに前記冗長経路を設定する、請求項4記載の経路制御装置。 - 前記経路設定手段は、
前記フローに割り当てられていた帯域が開放され、前記トラヒック状況が変化した場合に、当該開放された帯域が割り当てられることにより冗長経路に割り当てられている帯域を開放しても前記第2の通信品質を満たすフローを抽出し、当該抽出されたフローの冗長経路を削除する、請求項4記載の経路制御装置。 - 前記経路設定手段は、
新規フローの経路設定を行う時に、前記新規フローよりも優先度が低い既存フローの帯域を前記新規フローに割り当てるとともに、前記新規フローに割り当てられた帯域よりも通信品質が劣る帯域を既存フローに割り当て、
前記割り当てられた帯域においては、前記既存フローが要求する第2の通信品質を満たさない場合、当該既存フローに冗長経路を設定する、請求項4記載の経路制御装置。 - 前記通信品質は、適応変調が利用可能な前記無線リンクにおいて、それぞれの変調方式を利用可能な確率を示す安定度を含む請求項1乃至7のいずれか1項に記載の経路制御装置。
- 前記安定度は、前記無線リンクにおいて使用された変調方式の履歴及び前記無線リンクの電波環境を示す情報の履歴のうち少なくとも一方に基づいて算出される、請求項8記載の経路制御装置。
- 複数の通信装置間を接続する複数の無線リンクを用いた通信経路の設定を行う経路制御方法であって、
前記複数の無線リンクにおけるそれぞれの第1の通信品質の変化及び前記複数の無線リンクを流れるトラヒック状況の変化のうち少なくとも一方に基づいて、前記通信経路における前記第1の通信品質が、前記無線リンクを流れるフローが要求する第2の通信品質を満たすように、前記フローの通信経路を設定するステップ、を備える経路制御方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP11795339.8A EP2584839B1 (en) | 2010-06-17 | 2011-05-18 | Pathway control device and pathway control method |
JP2012520257A JP5803911B2 (ja) | 2010-06-17 | 2011-05-18 | 経路制御装置及び経路制御方法 |
CN201180029861.7A CN102960028B (zh) | 2010-06-17 | 2011-05-18 | 路径控制设备和路径控制方法 |
US13/702,006 US8929199B2 (en) | 2010-06-17 | 2011-05-18 | Path control device and path control method |
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EP (1) | EP2584839B1 (ja) |
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WO2016132429A1 (ja) * | 2015-02-16 | 2016-08-25 | 株式会社日立製作所 | 通信システム、通信制御方法、および、制御サーバ |
JP2017188810A (ja) * | 2016-04-07 | 2017-10-12 | 住友電気工業株式会社 | 管理装置および管理システム |
JPWO2020031269A1 (ja) * | 2018-08-07 | 2021-08-02 | 株式会社Nttドコモ | 無線ノード、及び、無線通信方法 |
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Also Published As
Publication number | Publication date |
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CN102960028B (zh) | 2016-06-29 |
CN102960028A (zh) | 2013-03-06 |
US8929199B2 (en) | 2015-01-06 |
EP2584839A4 (en) | 2017-01-11 |
JP5803911B2 (ja) | 2015-11-04 |
EP2584839B1 (en) | 2019-06-26 |
EP2584839A1 (en) | 2013-04-24 |
JPWO2011158431A1 (ja) | 2013-08-19 |
US20130083663A1 (en) | 2013-04-04 |
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