WO2011085586A1 - 隧道建立方法、设备及网络系统 - Google Patents
隧道建立方法、设备及网络系统 Download PDFInfo
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- WO2011085586A1 WO2011085586A1 PCT/CN2010/075790 CN2010075790W WO2011085586A1 WO 2011085586 A1 WO2011085586 A1 WO 2011085586A1 CN 2010075790 W CN2010075790 W CN 2010075790W WO 2011085586 A1 WO2011085586 A1 WO 2011085586A1
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- WIPO (PCT)
- Prior art keywords
- bras
- tunnel
- capwap
- wtp
- address
- Prior art date
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/02—Access restriction performed under specific conditions
- H04W48/06—Access restriction performed under specific conditions based on traffic conditions
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- 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
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- 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]
- H04L12/2854—Wide area networks, e.g. public data networks
- H04L12/2856—Access arrangements, e.g. Internet access
- H04L12/2869—Operational details of access network equipments
- H04L12/287—Remote access server, e.g. BRAS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
- H04L61/5014—Internet protocol [IP] addresses using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/12—Setup of transport tunnels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/25—Maintenance of established connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
Definitions
- the present invention claims the priority of a Chinese patent application filed on January 13, 2010 by the Chinese Patent Office, the application number is 201010001236.9, and the invention is entitled "Tunnel Establishment Method, Equipment and Network System". The entire contents are incorporated herein by reference.
- the present invention relates to the field of communications technologies, and in particular, to a tunnel establishing method, device, and network system. Background technique
- FIG. 1 shows a WLAN access method provided by the prior art.
- the control message is transmitted between the wireless access point (WTP) and the access control (AC) through a Control and Provisioning of Wireless Access Points (CAPWAP) tunnel. data flow.
- WTP obtains the IP address of the AC from the dynamic host configuration protocol (DHCP) server, and establishes a CAPWAP control tunnel with the AC.
- DHCP dynamic host configuration protocol
- the tunnel is controlled by the CAPWAP.
- the AC downloads the configuration information such as the software version, radio frequency, and power. After the information is configured, the CAPWAP data tunnel is established with the AC.
- the terminal device When the terminal device wants to access the Internet, it initiates an access request to the WTP through the wireless network card, and the WTP sends the access request to the AC through the CAPWAP data tunnel, and the AC sends the access request to the broadband remote access server (Broadband Remote) Access Server, BRAS), BRAS performs access authentication for the terminal device. After the authentication succeeds, the AC notifies the WTP that the access authentication of the terminal device is successful. The WTP establishes an air interface data channel with the terminal device, and the terminal device accesses the Internet successfully. .
- Broadband Remote Access Server Broadband Remote Access Server
- Embodiments of the present invention provide a tunnel establishment method, device, and network system, which can establish a CAPWAP data tunnel between a WTP and a BRAS.
- a tunnel establishment method includes:
- the wireless access point WTP obtains the address of the access control point AC and the address of the broadband access server BRAS from the dynamic host configuration protocol DHCP server;
- WTP uses the address of the AC to establish a wireless access point control protocol CAPWAP control tunnel with the AC;
- WTP uses the address of the BRAS to establish a CAPWAP data tunnel with the BRAS.
- a device for tunnel establishment comprising:
- An obtaining unit configured to obtain an address of an AC and an address of a BRAS from a DHCP server; and a control tunnel establishing unit, configured to establish a CAPWAP control tunnel with the AC by using an address of the AC;
- a data tunnel establishing unit is configured to establish a CAPWAP data tunnel with the BRAS by using the address of the BRAS.
- a network system including: WTP, AC, and BRAS, wherein
- the WTP is configured to obtain an AC address and a BRAS address from a DHCP server, establish a CAPWAP control tunnel with the AC by using an address of the AC, and establish a CAPWAP data tunnel with the BRAS by using the address of the BRAS;
- the AC is used to establish a CAPWAP control tunnel with the WTP;
- the BRAS is used to establish a CAPWAP data tunnel between WTPs.
- the embodiment of the present invention establishes a CAPWAP control tunnel between WTP and AC, in WTP and
- a CAPWAP data tunnel is established between the BRASs, which enables the AC to control tunnel management through CAPWAP.
- WTP can also directly transmit the data of the terminal to the BRAS by using the CAPWAP data tunnel, which solves the problem that the AC cannot process large traffic data when a large number of terminals in the prior art access the Internet.
- FIG. 1 is a schematic diagram of a WLAN access method provided by the prior art
- FIG. 2 is a flowchart of a tunnel establishment method according to an embodiment of the present invention.
- FIG. 3 is a schematic diagram of a tunnel establishment method according to another embodiment of the present invention.
- FIG. 4 is a schematic diagram of a format of an Option provided by an embodiment of the present invention.
- FIG. 5 is a schematic diagram of another Option format provided by an embodiment of the present invention.
- FIG. 6 is a structural diagram of a device for tunnel establishment according to an embodiment of the present invention.
- FIG. 7 is a structural diagram of a network system according to an embodiment of the present invention. 2 an embodiment of the present invention provides a tunnel establishment method, where the method includes: 201.
- a WTP obtains an address of an AC and an address of a BRAS from a DHCP server.
- the WTP uses the DHCP protocol message to exchange information with the DHCP server to obtain the address of the AC and the address of the BRAS.
- the WTP broadcast dynamic host configuration protocol discovers a DHCP Discover message, and multiple DHCP servers send a dynamic offer configuration protocol to the WTP to provide a DHCP Offer message, where the DHCP Offer message carries the AC address and the BRAS address; WTP selects and manages its own DHCP server. And sending a dynamic host configuration protocol request DHCP Request message to the selected DHCP server, and receiving a dynamic host configuration protocol acknowledgement DHCP ACK message sent by the DHCP server, where the DHCP ACK message carries the address of the AC and the address of the BRAS.
- the DHCP server corresponding to the first DHCP Offer message received by the WTP is to manage its own DHCP server.
- the WTP uses the address of the AC to establish a CAPWAP control tunnel with the AC.
- the WTP uses the CAPWAP control tunnel to obtain management control information from the AC.
- the management control information includes: software version, radio frequency, power, and other configuration information. WTP uses these management control information to configure it so that WTP can work.
- the WTP establishes a CAPWAP data tunnel with the BRAS by using the address of the BRAS.
- the embodiment of the present invention controls the tunnel through the CAPWAP established between the WTP and the AC, in the WTP and
- the CAP WAP data tunnel is established between the BRASs, and the AC can manage the WTP through the CAP WAP control tunnel.
- the WTP can also directly transmit the data of the terminal to the BRAS by using the CAP WAP data tunnel, which solves the problem that a large number of terminals in the prior art access the Internet. , AC can not handle the problem of large traffic data.
- FIG. 3 is a detailed description of a method for establishing a tunnel, and the method specifically includes:
- WTP broadcasts a DHCP Discover message.
- the WTP receives a DHCP Offer message sent by multiple DHCP servers, where the DHCP Offer message carries an AC address list and a BRAS address list corresponding to the DHCP server.
- each DHCP server is configured with one AC address and one BRAS address. Multiple AC addresses and multiple BRAS addresses can also be configured. .
- the Option in the DHCP Offer message can be used to carry the AC address list and the BRAS address list in the Option of the DHCP Offer message.
- the WTP selects and manages its own DHCP server, and sends a DHCP Request message to the selected DHCP server.
- the DHCP server corresponding to the first DHCP Offer message received by the WTP is to manage its own DHCP server.
- the WTP receives a DHCP ACK message sent by the DHCP server, where the DHCP ACK message carries an AC address list and a BRAS address list.
- the Option in the DHCP ACK message can be used to carry the AC address list and the BRAS address list by using the option Option in the DHCP ACK message.
- FIG. 4 shows the format of the Option in the DHCP Offer message or the DHCP ACK message in the DHCPv4 version.
- FIG. 5 shows the format of the Option in the DHCP Offer message or the DHCP ACK message in the DHCPv6 version.
- the WTP uses the address of the AC to establish a CAP WAP control tunnel with the AC.
- the WTP selects an AC address from which the AC address is selected.
- the first AC address if the CAPWAP control tunnel cannot be established with the AC corresponding to the first AC address in this step 305, the next AC address is selected to establish a CAPWAP control tunnel between the ACs corresponding to the AC address. 306.
- the WTP sends a first keepalive (KEEPALIVE) message to the AC through the CAPWAP control tunnel according to the first predetermined period, and determines whether the AC receives the response message of the first keepalive message in the specific time. If yes, determine the CAPWAP control. The tunnel is connected. If no, the CAPWAP control tunnel is determined to be disconnected.
- KEEPALIVE first keepalive
- the WTP sends a first KEEPALIVE message to the AC through the CAPWAP control tunnel every 5 minutes to determine the connectivity of the CAPWAP control tunnel.
- the WTP obtains the configuration information such as the software version, the radio frequency, and the power from the AC, and uses the configuration information to perform corresponding configuration, so that the WTP is in a normal working state.
- the WTP uses the address of the BRAS to establish a CAP WAP data tunnel with the BRAS. If the Option in the DHCP Offer message in step 302 and the BRAS address list carried in the Option in the DHCP ACK message in step 304 include multiple BRAS addresses, the WTP selects a BRAS address from which the BRAS address list is generally selected. The first BRAS address, if the CAPWAP data tunnel cannot be established with the BRAS corresponding to the first BRAS address in this step 308, the next BRAS address is selected to establish a CAPWAP data tunnel between the BRASs corresponding to the BRAS address.
- the WTP sends a second keepalive (KEEPALIVE) message to the BRAS through the CAPWAP data tunnel according to the second predetermined period, and determines whether the BRAS receives the response message of the second keepalive message in the specific time. If yes, determine the CAPWAP. The data tunnel is connected. If no, the CAPWAP data tunnel is determined to be disconnected.
- KEPALIVE second keepalive
- the WTP sends a second KEEPALIVE message to the BRAS through the CAPWAP data tunnel every 6 minutes to determine the connectivity of the CAPWAP data tunnel.
- the time of the first predetermined period and the second predetermined period may be the same or different, and does not affect the implementation of the present invention.
- the WTP receives an access request sent by the terminal.
- the WTP sends the access request to the BRAS through the CAPWAP data tunnel.
- the BRAS performs access authentication on the terminal. After the authentication succeeds, the CAPWAP data tunnel sends an authentication success notification message to the WTP, and the subsequent terminal can use the CAPWAP data tunnel. The data message of the terminal is transmitted to the BRAS, and accesses the Internet.
- WTP periodically detects the connectivity of the CAPWAP control tunnel and the CAPWAP data tunnel. Specifically, the WTP sends the first keep-alive packet to the AC through the CAPWAP control tunnel according to the first predetermined period, and determines whether the response of the AC to the first keep-alive packet is received within a certain period of time. If yes, the CAPWAP control is determined. The tunnel is connected, so that the subsequent WTP uses the CAPWAP control tunnel to exchange management control information with the AC. If no, the CAPWAP control tunnel is determined to be disconnected, and then the control information is not exchanged with the AC. For example, the subsequent AC 4 dynamically adjusts the network traffic. WTP transmit power.
- the WTP cannot exchange information with the AC. Therefore, the adjusted WTP transmit power cannot be obtained, and the WTP does not send the terminal's data packet to the BRAS, and then performs CAPWAP.
- the CAPWAP control tunnel is connected.
- the WTP can exchange control information with the AC and send the data packet of the terminal to the BRAS.
- the WTP sends a second keepalive message to the BRAS through the CAPWAP data tunnel according to the second predetermined period, and determines whether the BRAS receives the response message of the second keepalive message in the specific time. If yes, the CAPWAP data tunnel is determined to be connected.
- the WTP does not send the data of the terminal to the BRAS. If the CAPWAP data tunnel connectivity is detected, the CAPWAP data tunnel is connected. Then, the WTP can send the data of the terminal to the BRAS.
- a CAPWAP control tunnel is established between the WTP and the AC
- a CAPWAP data tunnel is established between the WTP and the BRAS, so that the AC can manage the WTP through the CAPWAP control tunnel, and the WTP can also directly transmit the data of the terminal by using the CAPWAP data tunnel.
- the problem that the AC cannot handle large traffic data when a large number of terminals in the prior art access the Internet is solved.
- an embodiment of the present invention provides an apparatus for tunnel establishment, including: an obtaining unit 601, configured to acquire an address of an AC and an address of a BRAS from a DHCP server; and a control tunnel establishing unit 602, configured to use an AC Address, establish a CAPWAP control tunnel with the AC;
- the data tunnel establishing unit 603 is configured to establish a CAPWAP data tunnel with the BRAS by using the address of the BRAS.
- the device also includes:
- the first detecting unit 604 is configured to send, by using the CAPWAP control tunnel, the first keep-alive packet to the AC according to the first predetermined period, and determine whether the response packet of the AC to the first keep-alive packet is received in the specific time period. If yes, determine that the CAPWAP control tunnel is connected. If not, determine that the CAPWAP control tunnel is not connected.
- the first control unit 605 is configured to: when the CAPWAP control tunnel is disconnected, control not to use the CAPWAP control tunnel to exchange control information with the AC, and control not to use the CAPWAP data tunnel to send data packets to the BRAS.
- the second detecting unit 606 is configured to send, by using the CAPWAP data tunnel, a second keep-alive message to the BRAS according to the second predetermined period, and determine whether the response of the BRAS to the second keep-alive file is received in a specific time period. If yes, determine that the CAPWAP data tunnel is connected. If not, determine that the CAP WAP data tunnel is not connected.
- the second control unit 607 is configured to: when the CAPWAP data tunnel is disconnected, control to not use the CAPWAP data tunnel to send data to the BRAS.
- the first transceiver unit 608 is configured to: when the CAPWAP data tunnel is connected, send the data packet from the terminal to the BRAS through the established CAPWAP data tunnel; and/or pass the data packet from the BRAS through the established CAPWAP data. The tunnel is sent to the terminal.
- the first transceiver unit 608 is further configured to send an access request from the terminal to the BRAS through the CAPWAP data tunnel, and receive an authentication success notification message for the access request sent by the BRAS through the CAPWAP data tunnel.
- the obtaining unit 601 includes: a second transceiver subunit 6011 and a selection subunit 6012; a second transceiver subunit 6011, configured to broadcast a DHCP Discover message; receive a DHCP Offer message sent by multiple DHCP servers; and select a subunit 6012
- the selected DHCP server sends a DHCP Request message; receives a DHCP ACK message sent by the selected DHCP server; wherein the DHCP Offer message includes an AC address and a BRAS address corresponding to the DHCP server, and/or, the DHCP ACK message includes DHCP The AC address and BRAS address corresponding to the server;
- the selecting subunit 6012 is configured to select to manage its own DHCP server among the plurality of DHCP servers after receiving the DHCP Offer message sent by the multiple DHCP servers.
- a CAPWAP control tunnel is established between the WTP and the AC
- a CAPWAP data tunnel is established between the WTP and the BRAS, so that the AC can manage the WTP through the CAPWAP control tunnel, and can also directly transmit the data of the terminal to the CAPWAP data tunnel.
- BRAS solution
- an embodiment of the present invention provides a network system, including: WTP 701, AC 702, and BRAS 703, where
- the WTP 701 is configured to obtain an AC address and a BRAS address from the DHCP server, establish a CAP WAP control tunnel with the AC by using the address of the AC, and establish a CAPWAP data tunnel with the BRAS by using the address of the BRAS;
- AC 702 used to establish a CAPWAP control tunnel with the WTP
- BRAS 703 used to establish a CAPWAP data tunnel between WTPs.
- the WTP 701 receives the access request sent by the terminal, and sends the access request to the BRAS through the CAPWAP data tunnel; the BRAS 703 performs access authentication on the terminal, and after the authentication succeeds, sends the authentication to the WTP through the CAPWAP data tunnel.
- the success notification message is such that the terminal transmits the data message of the terminal to the BRAS by using the CAPWAP data tunnel.
- the WTP 701 is further configured to send the data from the terminal to the BRAS through the established CAPWAP data tunnel, and send the data from the BRAS to the terminal through the established CAPWAP data tunnel.
- the WTP 701 is further configured to send, by using the CAPWAP control tunnel, the first keep-alive packet to the AC according to the first predetermined period, and determine whether the response packet of the AC to the first keep-alive packet is received in the specific time period. If yes, determine that the CAPWAP control tunnel is connected. If not, determine that the CAPWAP control tunnel is not connected. When the CAPWAP control tunnel is not connected, the control does not use CAPWAP to control the tunnel and AC interaction control management information, and control does not use the CAPWAP data tunnel to send to the BRAS. Data message.
- the WTP 701 is configured to send, by using the CAPWAP data tunnel, a second keep-alive message to the BRAS according to the second predetermined period, to determine whether the response of the BRAS to the second keepalive text is received in a specific time period. If yes, determine CAPWAP data tunnel connectivity. If no, determine that the CAPWAP data tunnel is not connected. When the CAPWAP data tunnel is not connected, control does not use the CAPWAP data tunnel to send data packets to the BRAS.
- a CAPWAP control tunnel is established between the WTP and the AC
- a CAPWAP data tunnel is established between the WTP and the BRAS, so that the AC can control the tunnel through the CAPWAP.
- WTP can also directly transmit the data of the terminal to the BRAS by using the CAPWAP data tunnel, which solves the problem that the AC cannot process large traffic data when a large number of terminals in the prior art access the Internet.
- the program may be instructed to perform related hardware, and the program may be stored in a computer readable storage medium such as a read only memory, a magnetic disk or an optical disk.
- the tunnel establishment method, device, and network system provided by the embodiments of the present invention are performed above.
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- Computer Networks & Wireless Communication (AREA)
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- Mobile Radio Communication Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Small-Scale Networks (AREA)
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10842869.9A EP2469961B1 (en) | 2010-01-13 | 2010-08-09 | Method, apparatus and network system for tunnel establishment |
JP2012535605A JP5453545B2 (ja) | 2010-01-13 | 2010-08-09 | トンネル確立のための方法、装置、およびネットワークシステム |
IL218733A IL218733A (en) | 2010-01-13 | 2012-03-19 | A method and system for establishing a system of communication channels |
US13/548,036 US8929214B2 (en) | 2010-01-13 | 2012-07-12 | Method, device, and network system of establishing a tunnel |
US14/558,030 US9277575B2 (en) | 2010-01-13 | 2014-12-02 | Method, device and network system of establishing a tunnel |
US15/005,824 US9468030B2 (en) | 2010-01-13 | 2016-01-25 | Method, device, and network system of establishing a tunnel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010100012369A CN101771612B (zh) | 2010-01-13 | 2010-01-13 | 隧道建立方法、设备及网络系统 |
CN201010001236.9 | 2010-01-13 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/548,036 Continuation US8929214B2 (en) | 2010-01-13 | 2012-07-12 | Method, device, and network system of establishing a tunnel |
Publications (1)
Publication Number | Publication Date |
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WO2011085586A1 true WO2011085586A1 (zh) | 2011-07-21 |
Family
ID=42504223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/CN2010/075790 WO2011085586A1 (zh) | 2010-01-13 | 2010-08-09 | 隧道建立方法、设备及网络系统 |
Country Status (6)
Country | Link |
---|---|
US (3) | US8929214B2 (zh) |
EP (1) | EP2469961B1 (zh) |
JP (1) | JP5453545B2 (zh) |
CN (1) | CN101771612B (zh) |
IL (1) | IL218733A (zh) |
WO (1) | WO2011085586A1 (zh) |
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US8929214B2 (en) | 2010-01-13 | 2015-01-06 | Huawei Technologies Co., Ltd. | Method, device, and network system of establishing a tunnel |
RU2572825C1 (ru) * | 2012-01-18 | 2016-01-20 | Хуавей Текнолоджиз Ко., Лтд. | СПОСОБ И УСТРОЙСТВО ДЛЯ Wi-Fi ТЕРМИНАЛА ДЛЯ ДОПУСКА К РАЗЛИЧНЫМ ДОМЕНАМ УСЛУГ |
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JP2013509117A (ja) | 2013-03-07 |
IL218733A (en) | 2016-08-31 |
EP2469961A1 (en) | 2012-06-27 |
US20150098324A1 (en) | 2015-04-09 |
US20160143071A1 (en) | 2016-05-19 |
US9468030B2 (en) | 2016-10-11 |
EP2469961B1 (en) | 2017-01-18 |
US9277575B2 (en) | 2016-03-01 |
US8929214B2 (en) | 2015-01-06 |
JP5453545B2 (ja) | 2014-03-26 |
EP2469961A4 (en) | 2012-06-27 |
CN101771612A (zh) | 2010-07-07 |
CN101771612B (zh) | 2012-07-04 |
US20120275303A1 (en) | 2012-11-01 |
IL218733A0 (en) | 2012-06-28 |
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