WO2015072129A1 - アクセスネットワーク装置、管理装置、通信システム、情報通知方法、管理方法およびプログラム - Google Patents
アクセスネットワーク装置、管理装置、通信システム、情報通知方法、管理方法およびプログラム Download PDFInfo
- Publication number
- WO2015072129A1 WO2015072129A1 PCT/JP2014/005638 JP2014005638W WO2015072129A1 WO 2015072129 A1 WO2015072129 A1 WO 2015072129A1 JP 2014005638 W JP2014005638 W JP 2014005638W WO 2015072129 A1 WO2015072129 A1 WO 2015072129A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- access network
- communication
- network device
- management
- lldp
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
-
- 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
- H04L41/34—Signalling channels for network management communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/12—Setup of transport tunnels
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/14—Interfaces between hierarchically different network devices between access point controllers and backbone network device
Definitions
- the present invention relates to an access network device, a management device, a communication system, an information notification method, a management method, and a program, and in particular, an access network device, a management device, a communication system, and information that transmit information managed by the access network device.
- the present invention relates to a notification method, a management method and a program.
- FIG. 12 of Patent Document 1 describes a network monitoring system in which the monitoring system obtains information managed by each of a plurality of monitoring target devices using LLDP (Link Layer Discovery Protocol).
- LLDP Link Layer Discovery Protocol
- LLDP is a layer 2 level protocol defined in IEEE (Institut of Electric and Electronics Engineers) 802.1AB.
- IEEE Institute of Electric and Electronics Engineers 802.1AB.
- an LLDP frame indicating management information of a node is transmitted and received between nodes adjacent to each other (hereinafter referred to as “adjacent nodes”).
- Each node notifies an adjacent node of management information managed by the own node by transmitting an LLDP frame.
- Each node recognizes management information managed by the adjacent node using the LLDP frame from the adjacent node.
- the monitoring system described in Patent Document 1 obtains management information managed by a monitoring target device using LLDP.
- An object of the present invention is to provide an access network device, a management device, a communication system, an information notification method, a management method, and a program that can solve the above problems.
- An access network device is an access network device that is incorporated into an access network, and the management device that manages the access network after the access network device is incorporated into the access network and the access network device. And a communication means for transmitting a layer 2 message including information managed by the access network device via the communication tunnel.
- a management device is a management device that manages an access network, from an access network device incorporated in the access network, via a communication tunnel set between the management device and the access network device.
- the communication system of the present invention includes an access network device incorporated in an access network, and a management device that manages the access network, the access network device after the access network device is incorporated in the access network, Control means for setting a communication tunnel between the management device and the access network device, and first communication means for transmitting a layer 2 message including information managed by the access network device via the communication tunnel
- the management device has second communication means for receiving the layer 2 message from the access network device via the communication tunnel.
- the information notification method of the present invention is an information notification method performed by an access network device incorporated in an access network, the management device managing the access network after the access network device is incorporated in the access network, and the access A communication tunnel is set up with the network device, and a layer 2 message including information managed by the access network device is transmitted through the communication tunnel.
- the management method of the present invention is a management method performed by a management device that manages an access network, and is a communication set between the management device and the access network device from an access network device incorporated in the access network.
- a layer 2 message including information managed by the access network device is received via the tunnel.
- the program of the present invention is managed by a computer, a control procedure for setting a communication tunnel between a management device that manages the access network and the computer after the computer is incorporated into the access network.
- the program of the present invention is a program that manages information managed by the access network device from an access network device incorporated in the access network via a communication tunnel established between the computer and the access network device.
- a reception procedure for receiving a layer 2 message including is executed.
- the management device can obtain management information managed by the access network device even if a node exists between the management device and the access network device.
- FIG. 1 is a block diagram illustrating a communication system 100 according to a first embodiment of the present invention. It is the block diagram which showed radio base station eNB1. It is the figure which showed switch SW1. It is the figure which showed BRM3. It is a flowchart for demonstrating operation
- movement of BRM3. 6 is a diagram illustrating an example of information stored in a storage unit 62.
- FIG. 1 is a block diagram illustrating an example of a communication system 100. FIG. It is the figure which showed the wireless base station which consists of the communication tunnel control part 44 and the LLDP process part 45.
- FIG. 3 is a diagram illustrating a switch including a communication tunnel control unit 53 and an LLDP processing unit 54.
- FIG. 3 is a diagram showing a management device including a management unit 63.
- FIG. It is the figure which showed the wireless base station eNB used in 2nd Embodiment. It is the figure which showed switch SW used in 2nd Embodiment.
- FIG. 6 is a diagram illustrating an example of a storage unit 62 in which determination results using first to third threshold values are stored. It is the figure which showed the format example of the LLDP frame.
- FIG. 1 is a block diagram showing a communication system 100 according to the first embodiment of the present invention.
- the communication system 100 includes an access network 1, an EPC (Evolved Packet Core) network 2, and a management device 3.
- the management device is also referred to as a BRM (Backhaul Resource Manager).
- the access network 1 includes radio base stations eNB1 and eNB2, which are eNBs (evolved Node B), and networks 10A, 10B, and 10C.
- eNB1 and eNB2 which are eNBs (evolved Node B)
- networks 10A, 10B, and 10C are eNBs (evolved Node B)
- the networks 10A, 10B, and 10C connect the radio base stations eNB1 and eNB2 and the EPC network 2, respectively.
- Each of the networks 10A, 10B, and 10C includes a plurality of switches and a plurality of routers.
- switches SW1 to SW4 in the network 10A, switches SW5 to SW6 in the network 10B, and switches SW7 to SW8 in the network 10C are shown.
- Each of the switches SW1 to SW8 is, for example, an L2 (layer 2) switch or an L3 (layer 3) switch.
- the network 10A is a network to which the radio base stations eNB1 and eNB2 are connected during normal times.
- the networks 10B and 10C are networks used as detour routes when congestion or failure occurs in the network 10A.
- the network 10B or 10C may be used as a bypass route after establishing a security tunnel in the network 10B or 10C.
- the Internet is an example of a network that needs to consider security.
- the network that needs to consider security is not limited to the Internet.
- An example of a security tunnel is an IPsec (Internet Protocol Security) tunnel.
- the security tunnel is not limited to an IPsec tunnel.
- Each of the radio base stations eNB1 and eNB2 and the switches SW1 to SW8 is an example of an access network device and a second access network device.
- FIG. 2 is a block diagram showing the radio base station eNB1.
- the radio base station eNB1 includes a radio communication IF (interface) 41, a network IF 42, a communication processing unit 43, a communication tunnel control unit 44, and an LLDP processing unit 45.
- the wireless communication IF 41 is wirelessly connected to a terminal (not shown) such as a mobile phone or a smartphone.
- the network IF 42 is connected to an access network device (in the example shown in FIG. 1, the switch SW1) that communicates directly with the radio base station eNB1.
- an access network device in the example shown in FIG. 1, the switch SW1 that communicates directly with the radio base station eNB1.
- the communication processing unit 43 executes a function of a general radio base station (eNB). For example, the communication processing unit 43 controls communication between a terminal wirelessly connected to the wireless communication IF 41 and the EPC network 2.
- eNB general radio base station
- the communication tunnel control unit 44 is an example of a control unit.
- the communication tunnel control unit 44 sets a communication tunnel (hereinafter referred to as “first communication tunnel”) between the BRM 3 and the radio base station eNB1 after the radio base station eNB1 is incorporated into the access network 1.
- first communication tunnel a communication tunnel
- the communication tunnel control unit 44 sets the first communication tunnel using, for example, a VLAN (Virtual Local Network) or a VRF (Virtual Routing and Forwarding).
- VLAN Virtual Local Network
- VRF Virtual Routing and Forwarding
- the communication tunnel control unit 44 communicates with the BRM 3 and executes a setting process for setting the first communication tunnel. Since the communication tunnel setting method is a known technique, a detailed description thereof is omitted.
- the LLDP processing unit 45 is an example of a communication unit and a first communication unit.
- the LLDP processing unit 45 generates an LLDP frame including information managed by the radio base station eNB1 (hereinafter referred to as “first management information”).
- first management information information managed by the radio base station eNB1
- the LLDP processing unit 45 manages the first management information.
- the LLDP frame including the first management information is referred to as a “first LLDP frame”.
- the first management information is an example of management information.
- the first management information includes identification information of the radio base station eNB1 and information indicating the communication state of the radio base station eNB1.
- the information indicating the communication state of the radio base station eNB1 includes whether the radio base station eNB1 is in a normal state, a congestion state, or a failure state, the node 1 hop ahead of the radio base station eNB1 in the access network 1, and the radio base station eNB1 And the bandwidth usage on the line between the two.
- the first LLDP frame is an example of a layer 2 message.
- the LLDP processing unit 45 transmits the first LLDP frame via the first communication tunnel.
- the LLDP processing unit 45 performs encapsulation corresponding to the first communication tunnel on the first LLDP frame to generate a notification packet (hereinafter referred to as “first notification packet”).
- the LLDP processing unit 45 transmits the first notification packet via the first communication tunnel.
- the radio base station eNB2 has the same function as the radio base station eNB1.
- the description of the radio base station eNB2 is made by replacing “radio base station eNB1” with “radio base station eNB2” in the description of the radio base station eNB1 described above.
- the network IF 42 in the radio base station eNB2 is connected to an access network apparatus (switches SW1 and SW5 in the example shown in FIG. 1) that directly communicates with the radio base station eNB2.
- FIG. 3 is a diagram showing the switch SW1.
- the switch SW1 includes a network IF 51, a communication processing unit 52, a communication tunnel control unit 53, and an LLDP processing unit 54.
- the network IF 51 is connected to an access network device (in the example shown in FIG. 1, the radio base stations eNB1 and eNB2 and the switches SW2, SW4, SW5, and SW7) that communicate directly with the switch SW1.
- an access network device in the example shown in FIG. 1, the radio base stations eNB1 and eNB2 and the switches SW2, SW4, SW5, and SW7 that communicate directly with the switch SW1.
- the communication processing unit 52 has a switch function. For example, when the switch SW1 is an L2 switch, the communication processing unit 52 executes a function of a general L2 switch. Further, when the switch SW1 is an L3 switch, the communication processing unit 52 executes a function of a general L3 switch.
- the communication tunnel control unit 53 is an example of a control unit.
- the communication tunnel control unit 53 sets a communication tunnel (hereinafter referred to as “second communication tunnel”) between the BRM 3 and the switch SW1 after the switch SW1 is incorporated into the access network 1.
- the communication tunnel control unit 53 sets the second communication tunnel using, for example, VLAN or VRF. Since the communication tunnel setting method is a known technique as described above, a detailed description thereof is omitted.
- the LLDP processing unit 54 is an example of a communication unit and a first communication unit.
- the LLDP processing unit 54 generates an LLDP frame including information managed by the switch SW1 (hereinafter referred to as “second management information”).
- the LLDP processing unit 54 manages the second management information.
- the LLDP frame including the second management information is referred to as a “second LLDP frame”.
- the second management information is an example of management information.
- the second management information includes identification information of the switch SW1 and information indicating the communication state of the switch SW1.
- the information indicating the communication state of the switch SW1 includes whether the switch SW1 is in the normal state, the congestion state, or the failure state, and the bandwidth usage on the line between the node 1 hop ahead of the switch SW1 and the switch SW1 in the access network 1 And.
- the second LLDP frame is an example of a layer 2 message.
- the LLDP processing unit 54 transmits the second LLDP frame via the second communication tunnel.
- the LLDP processing unit 54 performs encapsulation corresponding to the second communication tunnel on the second LLDP frame to generate a notification packet (hereinafter referred to as “second notification packet”).
- the LLDP processing unit 54 transmits the second notification packet via the second communication tunnel.
- each of the switches SW2 to SW8 is made by replacing “switch SW1” with “switch SW2”, “switch SW3”... “Switch SW8” in the above description of the switch SW1.
- the network IF 51 in the switch SW2 is connected to an access network device (in the example shown in FIG. 1, the switches SW1 and SW3) that directly communicate with the switch SW2.
- each network IF 51 in the switches SW3 to SW8 is connected to an access network device that directly communicates with the switches SW3 to SW8, respectively.
- FIG. 4 is a diagram showing BRM3.
- the BRM 3 includes a network IF 61, a storage unit 62, and a management unit 63.
- the network IF 61 is connected to an access network device that directly communicates with the BRM 3.
- the storage unit 62 stores the communication state of each device in the access network 1 (in the example shown in FIG. 1, the radio base stations eNB1 and eNB2 and the switches SW1 to SW8).
- the management unit 63 is an example of a communication unit and a second communication unit.
- the management unit 63 receives each notification packet from each of the radio base stations eNB1 and eNB2 and the switches SW1 to SW8 via each communication tunnel.
- the management unit 63 decapsulates each notification packet to obtain each LLDP frame.
- the management unit 63 stores the communication state indicated in the LLDP frame in the storage unit 62.
- the management unit 63 controls the communication state of the access network 1 using the communication state of each device (wireless base stations eNB1 and eNB2 and switches SW1 to SW8) stored in the storage unit 62.
- the operation of the radio base station eNB1 will be described. Since the operation of the radio base station eNB2 conforms to the operation of the radio base station eNB1, its description is omitted.
- FIG. 5 is a flowchart for explaining the operation of the radio base station eNB1.
- the communication tunnel control unit 44 sets the first communication tunnel between the BRM 3 and the radio base station eNB1 after the radio base station eNB1 is incorporated into the access network 1 (step S101).
- the communication tunnel control unit 44 when the radio base station eNB1 is incorporated into the access network 1 and then the power supply voltage is input to the radio base station eNB1, the first communication tunnel between the BRM 3 and the radio base station eNB1. Set.
- the communication tunnel control unit 44 notifies the LLDP processing unit 45 of the first communication tunnel information indicating the IP (Internet Protocol) addresses of the radio base stations eNB1 and BRM3 that are both ends of the first communication tunnel.
- the LLDP processing unit 45 holds the first communication tunnel information.
- the communication processing unit 43 executes a function of a general radio base station (eNB) and further specifies a communication state of the radio base station eNB1 ( Step S102).
- eNB general radio base station
- the communication processing unit 43 uses the amount of data exchanged between the communication processing unit 43 and the network IF 42, so that the node between the wireless base station eNB1 and the wireless base station eNB1 is one hop ahead.
- the bandwidth usage on the line is specified as the communication state of the radio base station eNB1.
- the data is a packet or a frame.
- the communication processing unit 43 uses the amount of data exchanged between the communication processing unit 43 and the network IF 42 to determine whether the radio base station eNB1 is in a normal state, a congestion state, or a failure state. It is specified as the communication state of eNB1.
- the communication processing unit 43 outputs the communication state of the radio base station eNB1 to the LLDP processing unit 45.
- the LLDP processing unit 45 holds and manages the communication state of the radio base station eNB1 (step S103).
- the LLDP processing unit 45 generates a first LLDP frame indicating the communication state of the radio base station eNB1 and the identification information of the radio base station eNB1 (step S104).
- the LLDP processing unit 45 refers to the first communication tunnel information, performs encapsulation corresponding to the first communication tunnel on the first LLDP frame, and generates a first notification packet (step S105).
- the encapsulation corresponding to the first communication tunnel is to add a header indicating the IP address of the radio base station eNB1 as the transmission source and the IP address of the BRM3 as the transmission destination to the first LLDP frame. means.
- the LLDP processing unit 45 transmits a first notification packet from the network IF 42 (step S106).
- the first notification packet Since the first notification packet is encapsulated corresponding to the first communication tunnel, the first notification packet is received by the BRM 3 through the first communication tunnel.
- the LLDP processing unit 45 waits until a preset first time elapses after transmitting the first notification packet (step S107).
- the LLDP processing unit 45 When the first time has elapsed since the transmission of the first notification packet, the LLDP processing unit 45 outputs an output instruction to the communication processing unit 43.
- Step S102 When the communication processing unit 43 receives the output instruction, the communication processing unit 43 executes Step S102.
- switch SW1 Next, the operation of switch SW1 will be described. Note that the operation of the switches SW2 to SW8 conforms to the operation of the switch SW1, and therefore the description thereof is omitted.
- FIG. 6 is a flowchart for explaining the operation of the switch SW1.
- the communication tunnel control unit 53 sets the second communication tunnel between the BRM 3 and the switch SW1 when the power supply voltage is input to the switch SW1 after the switch SW1 is incorporated in the access network 1 (step S201).
- the communication tunnel control unit 53 notifies the LLDP processing unit 54 of the second communication tunnel information indicating the IP addresses of the radio base station eNB1 and the switch SW1 that are both ends of the second communication tunnel.
- the LLDP processing unit 54 holds the second communication tunnel information.
- the communication processing unit 52 executes a function of a general switch and further specifies the communication state of the switch SW1 (step S202).
- the communication processing unit 52 uses the amount of data exchanged between the communication processing unit 52 and the network IF 51, and uses a line between the node that is one hop ahead of the switch SW1 and the switch SW1.
- the bandwidth usage is specified as the communication state of the switch SW1.
- the communication processing unit 52 uses the amount of data exchanged between the communication processing unit 52 and the network IF 51 to determine whether the switch SW1 is in a normal state, a congestion state, or a failure state. As specified.
- the communication processing unit 52 outputs the communication state of the switch SW1 to the LLDP processing unit 54.
- the LLDP processing unit 54 holds and manages the communication state of the switch SW1 (step S203).
- the LLDP processing unit 54 generates a second LLDP frame indicating the communication state of the switch SW1 and the identification information of the switch SW1 (step S204).
- the LLDP processing unit 54 refers to the second communication tunnel information, executes encapsulation corresponding to the second communication tunnel for the second LLDP frame, and generates a second notification packet (step S205).
- the encapsulation corresponding to the second communication tunnel means that a header indicating the IP address of the switch SW1 as a transmission source and the IP address of the BRM3 as a transmission destination is added to the second LLDP frame. .
- the LLDP processing unit 54 transmits a second notification packet from the network IF 51 (step S206).
- the second notification packet Since the second notification packet is encapsulated corresponding to the second communication tunnel, the second notification packet is received by the BRM 3 through the second communication tunnel.
- the LLDP processing unit 54 waits until a preset second time elapses after transmitting the second notification packet (step S207).
- the second time may be the same as or different from the first time.
- the LLDP processing unit 54 When the second time has elapsed since the transmission of the second notification packet, the LLDP processing unit 54 outputs an output instruction to the communication processing unit 52.
- Step S202 When the communication processing unit 52 receives the output instruction, the communication processing unit 52 executes Step S202.
- FIG. 7 is a flowchart for explaining the operation of BRM3.
- notification packet When receiving the first notification packet or the second notification packet (hereinafter collectively referred to as “notification packet”) via the network IF 61 (step S301), the management unit 63 decapsulates the notification packet. An LLDP frame is detected (step S302).
- the management unit 63 stores the communication state of the transmission source of the LLDP frame indicated in the LLDP frame and the identification information of the transmission source in the storage unit 62 in association with each other (step S303).
- FIG. 8 is a diagram illustrating an example of information stored in the storage unit 62.
- eNB1 to eNB2 and SW1 to SW8 are shown as identification information of each device.
- the management unit 63 uses the information stored in the storage unit 62 to monitor the occurrence of congestion and failures in the access network 1.
- the management unit 63 issues a routing information change instruction to each device (wireless base station or switch) in the access network 1 according to the congestion or failure status in the access network 1.
- the management unit 63 operates as follows in order to avoid deterioration in service quality due to packet loss or delay in the access network 1.
- the management unit 63 refers to the storage unit 62, and transmits to the radio base station eNB2 an instruction to update the routing information to switch the traffic of the radio base station eNB2 to the switch SW # 5 having sufficient bandwidth usage.
- the communication processing unit 43 switches the traffic of the radio base station eNB2 to the switch SW # 5 in accordance with the routing information update instruction from the management unit 63.
- the management unit 63 refers to the storage unit 62 and performs band control (for example, change of transmission / reception band or change of line band for low priority service) for the radio base station eNB1 connected only to the switch SW1. You may go.
- band control for example, change of transmission / reception band or change of line band for low priority service
- the communication tunnel control unit 44 sets the first communication tunnel between the BRM 3 and the radio base station eNB1 after the radio base station eNB1 is incorporated into the access network 1.
- the LLDP processing unit 45 transmits the first LLDP frame via the first communication tunnel.
- the first LLDP frame reaches the BRM3.
- the communication tunnel control unit 53 sets the second communication tunnel between the BRM 3 and the switch SW1 after the switch SW1 is incorporated in the access network 1.
- the LLDP processing unit 54 transmits the second LLDP frame via the second communication tunnel.
- the management unit 63 of the BRM 3 receives the first LLDP frame and the second LLDP frame via each communication tunnel.
- the BRM 3 can obtain information managed by the access network device from the LLDP frame. It becomes possible.
- the access network device for example, the radio base station eNB1 or the switch SW1
- a radio base station including the communication tunnel control unit 44 and the LLDP processing unit 45, a switch including the communication tunnel control unit 53 and the LLDP processing unit 54, and a BRM including the management unit 63.
- FIG. 10A is a diagram showing a radio base station including a communication tunnel control unit 44 and an LLDP processing unit 45.
- FIG. 10B is a diagram illustrating a switch including the communication tunnel control unit 53 and the LLDP processing unit 54.
- FIG. 11 is a diagram showing a BRM including the management unit 63.
- the first LLDP frame includes information indicating the communication state of the radio base station eNB1.
- the second LLDP frame includes information indicating the communication state of the switch SW1.
- the BRM 3 can obtain the communication state of the access network device.
- the state management (bandwidth usage monitoring and fault monitoring) in the L2 network can be centrally managed by the BRM 3.
- the storage unit 62 stores information indicating the communication state of each access network device. For this reason, the management unit 63 can refer to the information stored in the storage unit 62 and execute, for example, a traffic routing setting in consideration of the entire access network 1 and a bandwidth control instruction for each access network device. become.
- the management unit 63 realizes effective use of the resources of the access network 1 by performing centralized monitoring at the L2 level using the LLDP function for the traffic status and failure status in the access network, and is stable for the end user. Service can be provided.
- each access network device transmits information managed by the own device to the BRM 3 via a communication tunnel.
- the access network device uses the LLDP frame to create a communication tunnel between the information managed by the own device and the information managed by another adjacent access network device. To BRM3.
- each access network device (wireless base station or switch) exchanges LLDP frames with other adjacent access network devices and acquires the communication state of the other access network devices.
- adjacent devices other adjacent access network devices are referred to as “adjacent devices”.
- the LLDP frame exchanged between the access network device and the neighboring device includes the normal state, congestion state, or failure state of the LLDP frame source, and the line between the source one-hop destination node and the source.
- the bandwidth usage at is shown as the communication state of the transmission source.
- FIG. 12 is a diagram illustrating a radio base station eNB used in the second embodiment.
- the same components as those shown in FIG. 12 are identical to those shown in FIG. 12
- the radio base station eNB includes a radio communication IF (interface) 41, a network IF 42, a communication processing unit 43, a communication tunnel control unit 44, and an LLDP processing unit 45a.
- the LLDP processing unit 45a is an example of a communication unit.
- the LLDP processing unit 45a exchanges LLDP frames with adjacent devices.
- the LLDP processing unit 45a manages the communication state of the radio base station eNB1 notified from the communication processing unit 43 and the communication state of the adjacent device notified from the adjacent device.
- the LLDP processing unit 45a generates a third LLDP frame indicating the communication state and identification information of the radio base station eNB1 and the communication state and identification information of the neighboring device.
- the LLDP processing unit 45a refers to the first communication tunnel information, executes encapsulation corresponding to the first communication tunnel on the third LLDP frame, and generates a third notification packet.
- the LLDP processing unit 45a transmits a third notification packet from the network IF.
- FIG. 13 is a diagram showing the switch SW used in the second embodiment.
- the same components as those shown in FIG. 13 are identical to those shown in FIG. 13;
- the switch SW includes a network IF 51, a communication processing unit 52, a communication tunnel control unit 53, and an LLDP processing unit 54a.
- the LLDP processing unit 54a is an example of a communication unit.
- the LLDP processing unit 54a exchanges LLDP frames with adjacent devices.
- the LLDP processing unit 54a manages the communication state of the switch SW notified from the communication processing unit 52 and the communication state of the adjacent device notified from the adjacent device.
- the LLDP processing unit 54a generates a fourth LLDP frame indicating the communication state and identification information of the switch SW and the communication state and identification information of the neighboring device.
- the LLDP processing unit 54a refers to the second communication tunnel information, performs encapsulation corresponding to the second communication tunnel on the fourth LLDP frame, and generates a fourth notification packet.
- the LLDP processing unit 54a transmits the fourth notification packet from the network IF 51.
- notification packet when receiving the third notification packet or the fourth notification packet (hereinafter collectively referred to as “notification packet”) via the network IF 61, the management unit 63 decapsulates the notification packet and generates an LLDP frame. To detect.
- the management unit 63 stores the communication state of the transmission source of the LLDP frame and the identification information of the transmission source, the communication state of the adjacent device, and the identification information of the adjacent storage, which are indicated in the LLDP frame, in the storage unit 62.
- the LLDP processing unit 45a generates a third LLDP frame indicating the communication state of the radio base station eNB and the communication state of the adjacent device.
- the LLDP processing unit 45a transmits the third LLDP frame via the first communication tunnel.
- the LLDP processing unit 54a generates a fourth LLDP frame indicating the communication state of the switch SW and the communication state of the adjacent device.
- the LLDP processing unit 54a transmits the fourth LLDP frame via the second communication tunnel.
- the BRM 3 can obtain information managed by the access network device in which another node exists with the BRM 3 from the LLDP frame.
- the BRM 3 can manage the communication state of the access network 1. become.
- the access network device does not calculate bandwidth information (bandwidth usage), and BRM3 calculates bandwidth information.
- bandwidth information bandwidth usage
- standard MIB Management information information base
- IfInOctets and IfOutOctets are transmitted from the access network apparatus to the BRM 3 via the communication tunnel in an LLDP frame.
- the BRM 3 calculates bandwidth information (bandwidth usage) using the information of the standard MIB.
- the standard MIB is defined in RFC (Request For Comment) 1213.
- the access network device when the level required for the monitoring of the access network 1 is not high, the access network device does not notify the BRM 3 of the band information (band usage), and the BRM 3 monitors the band information. You don't have to.
- the access network device manages the bandwidth usage of data sent and received in units of physical lines and logical lines (VLAN units and virtual IP addresses), and sends LLDP frames representing the bandwidth usage information via communication tunnels. May be transmitted to BRM3.
- the BRM 3 can monitor the bandwidth usage in units of logical lines. Therefore, the bandwidth usage can be finely managed in VLAN units or service units, and the BRM 3 can perform fine control.
- the management unit 63 may hold the first threshold for congestion determination, and may determine that the line is in a congestion state when the bandwidth usage of a certain line exceeds the first threshold.
- the management unit 63 holds the second threshold value for determining congestion release, and determines that the congestion state has been released on the line when the bandwidth usage of the line determined to be in the congestion state is lower than the second threshold value. May be. Note that the second threshold value is smaller than the first threshold value.
- the management unit 63 holds a third threshold value for determining a quasi-congestion state that is approaching congestion, and the bandwidth usage of a certain line exceeds the third threshold value and is equal to or less than the first threshold value, the line is You may determine with a semi-congestion state.
- the third threshold value is smaller than the first threshold value and larger than the second threshold value.
- FIG. 14 is a diagram showing an example of the storage unit 62 in which determination results using the first to third threshold values are stored.
- 680 Mbps is used as the first threshold
- 650 Mbps is used as the second threshold
- 480 Mbps is used as the third threshold.
- the first to third threshold values are not limited to 680 Mbps, 650 Mbps, and 480 Mbps, and can be changed as appropriate.
- the line indicated by the slanting line rising to the right is determined to be “congested”.
- the line indicated by the horizontal line is determined to be “quasi-congested”.
- the priority path (Path) and the priority traffic are stored in the storage unit 62 for each of the access network devices (radio base stations eNB1 to eNB2, switches SW1 to SW8).
- the priority path (Path) and the priority traffic are set according to an instruction from an administrator terminal of the access network 1, for example.
- the priority path is a path to which data is preferentially transferred when the access network device to which the priority path is set has a plurality of paths.
- the priority traffic indicates information such as a priority service, a VLAN, and a DSCP (Differentiated Services-Code Code Point) when an access network device in which the priority traffic is set transfers data.
- a priority service e.g., a priority service, a VLAN, and a DSCP (Differentiated Services-Code Code Point) when an access network device in which the priority traffic is set transfers data.
- DSCP Differentiated Services-Code Code Point
- the management unit 63 instructs the access network device to perform a bandwidth control instruction or a priority control instruction for reducing traffic different from the priority traffic. Send.
- the access network device receives the bandwidth control instruction or the priority control instruction, the access network device controls traffic according to the bandwidth control instruction or the priority control instruction.
- FIG. 15 is a diagram showing a format example of an LLDP frame used in each embodiment and each modification.
- LLDP Vendor Specific TLV (Type, Length, Value) is newly provided with bandwidth information for the state of the own device and the line between adjacent devices.
- the management unit 63 can execute certain traffic control from information that can be acquired from the existing standard MIB. For this reason, it is also possible to apply each said embodiment to the existing access network.
- the access network to be monitored by BRM3 is not limited to EUTRAN (Evolved Universal Terrestrial Radio Access Network) for LTE (Long Term Evolution).
- the access network to be monitored by the BRM 3 may be a 3GPP (3rd Generation Partnership Project) UTRAN (Universal Terrestrial Radio Access Network).
- the access network to be monitored by BRM 3 may be GSM (Global System for Mobile Communications) (registered trademark) GERAN (Enhanced Data Rate for GSM Radio Access Network).
- the access network to be monitored by the BRM 3 may be the Internet. In this case, it is desirable that the radio base station eNB can be connected to a Multiple RAT (Radio Access Technology) access network.
- RAT Radio Access Technology
- the radio base station eNB may be realized by a computer.
- the computer reads and executes a program recorded on a recording medium such as a CD-ROM (Compact Disk Read Only Memory) readable by the computer, and executes each function of the radio base station eNB.
- a recording medium such as a CD-ROM (Compact Disk Read Only Memory) readable by the computer, and executes each function of the radio base station eNB.
- the recording medium is not limited to the CD-ROM and can be changed as appropriate.
- the switch SW may be realized by a computer.
- the computer reads and executes a program recorded on a computer-readable recording medium to execute each function of the switch SW.
- An access network device incorporated in an access network wherein after the access network device is incorporated in the access network, a communication tunnel is formed between the management device that manages the access network and the access network device.
- An access network device comprising: a communication unit that transmits a layer 2 message including information managed by the access network device via the communication tunnel.
- a management device for managing an access network A layer 2 message including information managed by the access network device is received from an access network device incorporated in the access network via a communication tunnel established between the management device and the access network device.
- a management device having a communication unit.
- the communication unit receives the layer 2 message from each of the plurality of access network devices via a communication tunnel set between the management device and the access network device.
- the management apparatus as described in.
- the management device according to supplementary note 5, further comprising a storage unit that stores information included in each layer 2 message.
- the access network device is A controller configured to set a communication tunnel between the management device and the access network device after the access network device is incorporated into the access network; A first communication unit that transmits a layer 2 message including information managed by the access network device via the communication tunnel; The management device A communication system comprising a second communication unit that receives the layer 2 message from the access network device via the communication tunnel.
- a second access network device different from the access network device is: A second control unit that sets a communication tunnel between the second access network device and the management device after the second access network device is incorporated into the communication system; A third communication unit that transmits a layer 2 message including second information managed by the second access network device via the communication tunnel; The communication system according to appendix 8, wherein the second communication unit of the management device receives a layer 2 message including the second information.
- the management device (Supplementary Note 10) The management device The management apparatus according to appendix 9, further comprising a storage unit that stores the information included in the layer 2 message including the information and the second information included in the layer 2 message including the second information. .
- An information notification method performed by an access network device incorporated in an access network A control step of setting a communication tunnel between a management device that manages the access network and the access network device after the access network device is incorporated into the access network; A transmission step of transmitting a layer 2 message including information managed by the access network device via the communication tunnel.
- a management method performed by a management device that manages an access network A layer 2 message including information managed by the access network device is received from an access network device incorporated in the access network via a communication tunnel established between the management device and the access network device.
- a management method having a receiving step.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
図1は、本発明の第1実施形態の通信システム100を示したブロック図である。
また、第2LLDPフレームは、スイッチSW1の通信状態を表す情報を含む。
第1実施形態では、各アクセスネットワーク装置は、自装置が管理している情報を、通信トンネルを介してBRM3に送信する。これに対して、第2実施形態では、アクセスネットワーク装置は、自装置が管理している情報と、隣接する他のアクセスネットワーク装置が管理している情報とを、LLDPフレームを用いて通信トンネルを介してBRM3に送信する。
この場合、コンピュータは、コンピュータにて読み取り可能な記録媒体に記録されたプログラムを読込み実行して、スイッチSWが有する各機能を実行する。
前記アクセスネットワーク装置が管理している情報を含むレイヤ2メッセージを、前記通信トンネルを介して送信する通信部と、を有するアクセスネットワーク装置。
前記アクセスネットワークに組み込まれたアクセスネットワーク装置から、前記管理装置と前記アクセスネットワーク装置との間に設定された通信トンネルを介して、前記アクセスネットワーク装置が管理している情報を含むレイヤ2メッセージを受信する通信部を有する管理装置。
前記アクセスネットワーク装置は、
前記アクセスネットワーク装置が前記アクセスネットワークに組み込まれた後に、前記管理装置と前記アクセスネットワーク装置との間に通信トンネルを設定する制御部と、
前記アクセスネットワーク装置が管理している情報を含むレイヤ2メッセージを、前記通信トンネルを介して送信する第1通信部と、を有し、
前記管理装置は、
前記アクセスネットワーク装置から、前記通信トンネルを介して前記レイヤ2メッセージを受信する第2通信部を有する、通信システム。
前記アクセスネットワーク装置とは異なる第2のアクセスネットワーク装置を更に有し、
前記第2のアクセスネットワーク装置は、
前記第2のアクセスネットワーク装置が前記通信システムに組み込まれた後に、前記第2のアクセスネットワーク装置と前記管理装置との間に通信トンネルを設定する第2の制御部と、
前記第2のアクセスネットワーク装置が管理している第2の情報を含むレイヤ2メッセージを、前記通信トンネルを介して送信する第3通信部と、を有し、
前記管理装置の第2通信部は、前記第2の情報を含むレイヤ2メッセージを受信する、付記8に記載の通信システム。
前記情報を含むレイヤ2メッセージに含まれる前記情報と、前記第2の情報を含むレイヤ2メッセージに含まれる前記第2の情報と、を記憶する記憶部をさらに有する、付記9に記載の管理装置。
前記アクセスネットワーク装置が前記アクセスネットワークに組み込まれた後に、前記アクセスネットワークを管理する管理装置と前記アクセスネットワーク装置との間に通信トンネルを設定する制御ステップと、
前記アクセスネットワーク装置が管理している情報を含むレイヤ2メッセージを、前記通信トンネルを介して送信する送信ステップと、を有する情報通知方法。
前記アクセスネットワークに組み込まれたアクセスネットワーク装置から、前記管理装置と前記アクセスネットワーク装置との間に設定された通信トンネルを介して、前記アクセスネットワーク装置が管理している情報を含むレイヤ2メッセージを受信する受信ステップを有する管理方法。
前記コンピュータがアクセスネットワークに組み込まれた後に、アクセスネットワークを管理する管理装置と前記コンピュータとの間に通信トンネルを設定する制御手順と、
前記コンピュータが管理している情報を含むレイヤ2メッセージを、前記通信トンネルを介して送信する送信手順と、を実行させるためのプログラム。
アクセスネットワークに組み込まれたアクセスネットワーク装置から、前記コンピュータと前記アクセスネットワーク装置との間に設定された通信トンネルを介して、前記アクセスネットワーク装置が管理している情報を含むレイヤ2メッセージを受信する受信手順を実行させるためのプログラム。
1 アクセスネットワーク
2 EPCネットワーク
3 BRM(管理装置)
41 無線通信IF
42 ネットワークIF
43 通信処理部
44 通信トンネル制御部
45、45a LLDP処理部
51 ネットワークIF
52 通信処理部
53 通信トンネル制御部
54、54a LLDP処理部
61 ネットワークIF
62 記憶部
63 管理部
10A~10C ネットワーク
eNB1~eNB2 無線基地局
SW1~SW8 スイッチ
Claims (10)
- アクセスネットワークに組み込まれるアクセスネットワーク装置であって、
前記アクセスネットワーク装置が前記アクセスネットワークに組み込まれた後に、前記アクセスネットワークを管理する管理装置と前記アクセスネットワーク装置との間に通信トンネルを設定する制御手段と、
前記アクセスネットワーク装置が管理する情報を含むレイヤ2メッセージを、前記通信トンネルを介して送信する通信手段と、を有するアクセスネットワーク装置。 - 前記情報は、前記アクセスネットワーク装置の通信状態を表す情報を含むものである、請求項1に記載のアクセスネットワーク装置。
- 前記情報は、さらに、前記アクセスネットワーク装置とレイヤ2レベルで通信する通信装置の通信状態を表す情報を含むものである、請求項2に記載のアクセスネットワーク装置。
- アクセスネットワークを管理する管理装置であって、
前記アクセスネットワークに組み込まれたアクセスネットワーク装置から、前記管理装置と前記アクセスネットワーク装置との間に設定された通信トンネルを介して、前記アクセスネットワーク装置が管理している情報を含むレイヤ2メッセージを受信する通信手段を有する管理装置。 - 前記通信部は、複数の前記アクセスネットワーク装置の各々から、前記管理装置と前記アクセスネットワーク装置との間に設定された通信トンネルを介して、前記レイヤ2メッセージを受信する、請求項4に記載の管理装置。
- アクセスネットワークに組み込まれるアクセスネットワーク装置と、前記アクセスネットワークを管理する管理装置と、を含み、
前記アクセスネットワーク装置は、
前記アクセスネットワーク装置が前記アクセスネットワークに組み込まれた後に、前記管理装置と前記アクセスネットワーク装置との間に通信トンネルを設定する制御手段と、前記アクセスネットワーク装置が管理している情報を含むレイヤ2メッセージを、前記通信トンネルを介して送信する第1通信手段と、を有し、
前記管理装置は、
前記アクセスネットワーク装置から、前記通信トンネルを介して前記レイヤ2メッセージを受信する第2通信手段を有する、通信システム。 - アクセスネットワークに組み込まれるアクセスネットワーク装置が行う情報通知方法であって、
前記アクセスネットワーク装置が前記アクセスネットワークに組み込まれた後に、前記アクセスネットワークを管理する管理装置と前記アクセスネットワーク装置との間に通信トンネルを設定し、
前記アクセスネットワーク装置が管理している情報を含むレイヤ2メッセージを、前記通信トンネルを介して送信する、情報通知方法。 - アクセスネットワークを管理する管理装置が行う管理方法であって、
前記アクセスネットワークに組み込まれたアクセスネットワーク装置から、前記管理装置と前記アクセスネットワーク装置との間に設定された通信トンネルを介して、前記アクセスネットワーク装置が管理している情報を含むレイヤ2メッセージを受信する、管理方法。 - コンピュータに、
前記コンピュータがアクセスネットワークに組み込まれた後に、アクセスネットワークを管理する管理装置と前記コンピュータとの間に通信トンネルを設定する制御手順と、
前記コンピュータが管理している情報を含むレイヤ2メッセージを、前記通信トンネルを介して送信する送信手順と、を実行させるためのプログラム。 - コンピュータに、
アクセスネットワークに組み込まれたアクセスネットワーク装置から、前記コンピュータと前記アクセスネットワーク装置との間に設定された通信トンネルを介して、前記アクセスネットワーク装置が管理している情報を含むレイヤ2メッセージを受信する受信手順を実行させるためのプログラム。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14861510.7A EP3070889B1 (en) | 2013-11-15 | 2014-11-10 | Access network management |
US15/036,484 US20160270133A1 (en) | 2013-11-15 | 2014-11-10 | Access-network device, management device, communication system, information provision method, management method, and program |
JP2015547633A JP6179602B2 (ja) | 2013-11-15 | 2014-11-10 | アクセスネットワーク装置、管理装置、通信システム、情報通知方法、管理方法およびプログラム |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013-236576 | 2013-11-15 | ||
JP2013236576 | 2013-11-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015072129A1 true WO2015072129A1 (ja) | 2015-05-21 |
Family
ID=53057079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/005638 WO2015072129A1 (ja) | 2013-11-15 | 2014-11-10 | アクセスネットワーク装置、管理装置、通信システム、情報通知方法、管理方法およびプログラム |
Country Status (4)
Country | Link |
---|---|
US (1) | US20160270133A1 (ja) |
EP (1) | EP3070889B1 (ja) |
JP (1) | JP6179602B2 (ja) |
WO (1) | WO2015072129A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017029811A1 (ja) * | 2015-08-20 | 2017-02-23 | 日本電気株式会社 | 通信システム、基地局装置、制御装置、及び通信方法 |
WO2019172190A1 (ja) * | 2018-03-05 | 2019-09-12 | 日本電信電話株式会社 | ネットワークサービス選択装置及びネットワークサービス選択方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11894997B2 (en) * | 2021-07-13 | 2024-02-06 | Nile Global, Inc. | Methods and systems for network diagnostic |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090003337A1 (en) * | 2007-06-29 | 2009-01-01 | World Wide Packets, Inc. | Determining the State of a Tunnel with Respect to a Control Protocol |
JP2012134616A (ja) | 2010-12-20 | 2012-07-12 | Nec Corp | ネットワーク監視システムおよびその監視対象装置の登録方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101741678B (zh) * | 2008-11-26 | 2012-02-29 | 华为技术有限公司 | 一种建立虚拟局域网连接的方法、设备与系统 |
-
2014
- 2014-11-10 WO PCT/JP2014/005638 patent/WO2015072129A1/ja active Application Filing
- 2014-11-10 EP EP14861510.7A patent/EP3070889B1/en active Active
- 2014-11-10 JP JP2015547633A patent/JP6179602B2/ja active Active
- 2014-11-10 US US15/036,484 patent/US20160270133A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090003337A1 (en) * | 2007-06-29 | 2009-01-01 | World Wide Packets, Inc. | Determining the State of a Tunnel with Respect to a Control Protocol |
JP2012134616A (ja) | 2010-12-20 | 2012-07-12 | Nec Corp | ネットワーク監視システムおよびその監視対象装置の登録方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3070889A4 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017029811A1 (ja) * | 2015-08-20 | 2017-02-23 | 日本電気株式会社 | 通信システム、基地局装置、制御装置、及び通信方法 |
JPWO2017029811A1 (ja) * | 2015-08-20 | 2018-05-10 | 日本電気株式会社 | 通信システム、基地局装置、制御装置、及び通信方法 |
US10624021B2 (en) | 2015-08-20 | 2020-04-14 | Nec Corporation | Communication system, base station device, control device, and communication method |
WO2019172190A1 (ja) * | 2018-03-05 | 2019-09-12 | 日本電信電話株式会社 | ネットワークサービス選択装置及びネットワークサービス選択方法 |
Also Published As
Publication number | Publication date |
---|---|
JP6179602B2 (ja) | 2017-08-16 |
JPWO2015072129A1 (ja) | 2017-03-16 |
US20160270133A1 (en) | 2016-09-15 |
EP3070889A4 (en) | 2017-07-05 |
EP3070889B1 (en) | 2020-03-11 |
EP3070889A1 (en) | 2016-09-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10412650B2 (en) | Data transmission method, apparatus and system | |
EP3793240A1 (en) | Configuration method, data transmission method and apparatus | |
EP3474597B1 (en) | Communication network apparatus, communication network system, and method of communication network apparatus | |
EP2846498B1 (en) | Label distribution method and device | |
US9882819B2 (en) | Method and apparatus for controlling service quality in communication system, and communication apparatus | |
US20150138952A1 (en) | Communication system and method for path control | |
US10136412B2 (en) | Communication system, communication apparatus, and control method and control apparatus thereof | |
JP2018510553A (ja) | アクセス制御装置、システム、及び方法 | |
WO2013182059A1 (zh) | 多协议标签交换流量工程隧道建立方法及设备 | |
WO2015136875A1 (ja) | 通信装置およびトラフィック制御方法 | |
US20160072930A1 (en) | Data transmission method and apparatus, communications device, and communications system | |
ES2774286T3 (es) | Método y dispositivo para desviar datos | |
JP7482997B2 (ja) | データパケット送信方法および装置 | |
US20190260857A1 (en) | Data Packet Processing Method, Control Plane Network Element, And User Plane Network Element | |
EP3962157B1 (en) | Mdbv determining methods and apparatuses | |
JP6128116B2 (ja) | 通信端末、通信方法、通信システムおよびプログラム | |
JP6179602B2 (ja) | アクセスネットワーク装置、管理装置、通信システム、情報通知方法、管理方法およびプログラム | |
KR20240004972A (ko) | 노드의 마이그레이션을 처리하기 위한 제1 노드, 제2 노드, 및 그에 의해 실행되는 방법 | |
WO2015113281A1 (zh) | 用户数据处理方法、装置及网络系统 | |
WO2020042986A1 (zh) | 一种多跳数据传输方法及装置 | |
CN110582993B (zh) | 通过局域网连接进行通信的方法和装置 | |
WO2015141229A1 (ja) | 通信装置、通信方法、通信システムおよびプログラム | |
JP2024519639A (ja) | Integrated Access and Backhaulネットワークにおけるバックホールリンク問題 | |
JP5855171B2 (ja) | 改善されたサービス品質処理のための通信方法、通信プロトコル及び通信装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14861510 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2015547633 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15036484 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REEP | Request for entry into the european phase |
Ref document number: 2014861510 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2014861510 Country of ref document: EP |