WO2002041587A2 - Procede et systeme assurant la commande centralisee de reseaux locaux sans fil - Google Patents

Procede et systeme assurant la commande centralisee de reseaux locaux sans fil Download PDF

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Publication number
WO2002041587A2
WO2002041587A2 PCT/US2001/051306 US0151306W WO0241587A2 WO 2002041587 A2 WO2002041587 A2 WO 2002041587A2 US 0151306 W US0151306 W US 0151306W WO 0241587 A2 WO0241587 A2 WO 0241587A2
Authority
WO
WIPO (PCT)
Prior art keywords
access point
mobile device
initial
target
piconet
Prior art date
Application number
PCT/US2001/051306
Other languages
English (en)
Other versions
WO2002041587A3 (fr
Inventor
B. David Crosbie
Original Assignee
Bluesocket, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US09/911,092 external-priority patent/US7260638B2/en
Application filed by Bluesocket, Inc. filed Critical Bluesocket, Inc.
Priority to JP2002543871A priority Critical patent/JP2004514383A/ja
Priority to AU2002239788A priority patent/AU2002239788A1/en
Priority to CA002426482A priority patent/CA2426482A1/fr
Priority to EP01987586A priority patent/EP1330894A2/fr
Publication of WO2002041587A2 publication Critical patent/WO2002041587A2/fr
Publication of WO2002041587A3 publication Critical patent/WO2002041587A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H04L69/161—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H04L69/169—Special adaptations of TCP, UDP or IP for interworking of IP based networks with other networks 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/03—Protecting confidentiality, e.g. by encryption
    • H04W12/033—Protecting confidentiality, e.g. by encryption of the user plane, e.g. user's traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/06—Transport layer protocols, e.g. TCP [Transport Control Protocol] over wireless
    • 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]
    • 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
    • H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface

Definitions

  • the roaming server 22 determines that a mobile device 26 should change its LAN connection point from access point 24-1 to access point 24-2 based on a triggering or initiating event.
  • a triggering or initiating event can be the moving of the mobile device 26 (e.g., when the user moves the mobile device 26 from one location to another), or receiving a request from a mobile device 26 or access point 24 to move the mobile device 26.
  • Fig. 2 is a block diagram illustrating the components within the roaming server 22. These components include a digital processor 40, a device database 42, and a communications interface 44.
  • the digital processor 40 hosts and executes a gateway application 46 in the working memory of the roaming server 22.
  • the gateway application 46 serves to provide for the management of the connections of the roaming server 22 to other devices, such as access points 24 and mobile devices 26 (typically through connections through access points 24).
  • the gateway application 46 may instruct an access point 24-1 to perform a transfer of wireless connections 30-1 so that the mobile device 26 can establish a new connection 30-2 with a different access point 24-2.
  • the gateway application 46 is implemented partially or totally in hardware, such as in an ASIC (application-specific integrated circuit).
  • the roaming server 22 instructs the target or secondary access point 24-5 to listen for a packet from the mobile device 26-2 even if the packet is addressed to another access point (e.g., 24-4) having a different MAC address , so that packets could be returned from either access point (e.g., 24-4 or 24-5).
  • another access point e.g., 24-4 having a different MAC address
  • each access point 24 is aware of all the packets that arrive on a radio channel (e.g., assuming the channel can be accessed by both access points 24-4 and 24- 5).
  • the present invention provides that the look-up table be expanded to include a new category called "watch out".
  • the watch out category includes device addresses 52 (MAC addresses) and spoofing channels that the access point 24 should look out for.
  • MAC addresses device addresses 52
  • RSSI receiver signal strength
  • the server wireless protocol stack 74 (for a roaming server 22 or master access point 24) includes the TCP/IP (Transmission Control Protocol/Internet Protocol) layer 84, the PPP (point to point) layer 86, the RFCOMM (serial cable emulation protocol) layer 88, the L2CAP (logical link controller adaptation protocol) layer 90, the HCI transport layer 92-1, and the UDP/TP (User Datagram Protocol/Internet Protocol) transport layer 94-1.
  • the access point wireless protocol stack 76 includes the HCI transport layer 92-2, the UDP/IP fransport layer 94-2, the link manager layer 100 (e.g., Bluetooth link manager), the link controller layer 102 (e.g., Bluetooth link controller), and the radio layer 104.
  • Fig. 9 illustrates the HCI UDP packet format for an encapsulated packet 64 that includes a host controller interface command 72 (e.g., HCI command) based on a network based packet protocol (e.g., UDP).
  • a host controller interface command 72 e.g., HCI command
  • UDP network based packet protocol
  • the encapsulated host controller command 72 is part of the payload 122 when UDP packets are used for the HCI transport layer.
  • the version field 112 is a 1-byte value that identifies the version of the packet format used. For the first version of the HCI UDP protocol, the value 0x01 is used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Small-Scale Networks (AREA)

Abstract

Un réseau local sans fil (WLAN) comprend des dispositifs mobiles qui sont autorisés à transférer des connexions sans fil entre des sous-réseaux WLAN ou des canaux ayant des points d'accès différents. Les points d'accès se connectent à un contrôleur central ou à un serveur d'itinérance qui accepte des transferts directs de dispositifs mobiles d'un point d'accès à un autre point d'accès. Le serveur d'itinérance accepte les redistributions de paramètres de données de session d'un point d'accès à un autre (par exemple, le brouillage de l'adresse d'un point d'accès) de manière à ce que le dispositif mobile puisse utiliser les mêmes paramètres pour communiquer avec un nouveau point d'accès. Le serveur d'itinérance accepte également le transfert direct d'un dispositif mobile d'un point d'accès à un autre au moyen d'une technique de commutation maître-esclave effectuée entre deux picoréseaux. Le serveur d'itinérance facilite également la commande de points d'accès au moyen de la création d'une interface de contrôleur hôte et d'un mécanisme de transport sans fil dans le serveur d'itinérance et d'un autre mécanisme de transport sans fil complémentaire dans le point d'accès. Le serveur d'itinérance encapsule ensuite des commandes de contrôleur hôte dans un protocole de réseau par paquets utilisé pour la communication entre le serveur d'itinérance et les points d'accès.
PCT/US2001/051306 2000-10-23 2001-10-22 Procede et systeme assurant la commande centralisee de reseaux locaux sans fil WO2002041587A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2002543871A JP2004514383A (ja) 2000-10-23 2001-10-22 無線ローカルエリアネットワークの中央制御を可能にするための方法及びシステム
AU2002239788A AU2002239788A1 (en) 2000-10-23 2001-10-22 Method and system for enabling centralized control of wireless local area networks
CA002426482A CA2426482A1 (fr) 2000-10-23 2001-10-22 Procede et systeme assurant la commande centralisee de reseaux locaux sans fil
EP01987586A EP1330894A2 (fr) 2000-10-23 2001-10-22 Procede et systeme assurant la commande centralisee de reseaux locaux sans fil

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US24197500P 2000-10-23 2000-10-23
US60/241,975 2000-10-23
US09/911,092 2001-07-23
US09/911,092 US7260638B2 (en) 2000-07-24 2001-07-23 Method and system for enabling seamless roaming in a wireless network

Publications (2)

Publication Number Publication Date
WO2002041587A2 true WO2002041587A2 (fr) 2002-05-23
WO2002041587A3 WO2002041587A3 (fr) 2003-02-27

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PCT/US2001/051306 WO2002041587A2 (fr) 2000-10-23 2001-10-22 Procede et systeme assurant la commande centralisee de reseaux locaux sans fil

Country Status (5)

Country Link
EP (1) EP1330894A2 (fr)
JP (1) JP2004514383A (fr)
AU (1) AU2002239788A1 (fr)
CA (1) CA2426482A1 (fr)
WO (1) WO2002041587A2 (fr)

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US7126937B2 (en) 2000-12-26 2006-10-24 Bluesocket, Inc. Methods and systems for clock synchronization across wireless networks
US7016325B2 (en) 2001-01-18 2006-03-21 Strix Systems, Inc. Link context mobility method and system for providing such mobility, such as a system employing short range frequency hopping spread spectrum wireless protocols
US7546126B2 (en) 2001-05-02 2009-06-09 Strix Systems, Inc. Wireless base station neighbor discovery in a communication system, such as a system employing a short-range frequency hopping scheme
US7251489B2 (en) 2001-05-02 2007-07-31 Strix Systems, Inc. Wireless base station neighbor discovery in a communication system, such as a system employing a short-range frequency hopping scheme
US7194010B2 (en) 2001-05-02 2007-03-20 Strix Systems, Inc. Wireless base station to base station synchronization in a communication system, such as a system employing a short range frequency hopping or time division duplex scheme
US7151757B2 (en) 2001-05-02 2006-12-19 Strix Systems, Inc. Wireless base station to base station synchronization in a communication system, such as a system employing a short-range frequency hopping or time division duplex scheme
GB2389005B (en) * 2002-05-23 2005-09-07 Inc Motorola Communications methods and apparatus for use therein
GB2389005A (en) * 2002-05-23 2003-11-26 Inc Motorola Enabling cooperation between network kinds such as cellular and wlan
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WO2003105499A1 (fr) 2002-06-05 2003-12-18 Airflow Networks Commutateur virtuel
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WO2004004227A1 (fr) 2002-06-26 2004-01-08 Nokia Corporation Reseau de communication sans fil a equilibrage des charges
EP1516454B1 (fr) * 2002-06-26 2010-06-09 Nokia Corporation Reseau de communication sans fil a equilibrage des charges
US8484695B2 (en) 2002-10-10 2013-07-09 Rpx Corporation System and method for providing access control
US7630347B2 (en) 2002-10-17 2009-12-08 Alcatel Hybrid UMTS/WLAN telecommunication system
EP1411670A1 (fr) * 2002-10-17 2004-04-21 Alcatel Système de télécommunication hybride UMTS/WLAN
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CN100362822C (zh) * 2003-01-23 2008-01-16 三星电子株式会社 无线局域网中的切换方法、执行切换方法的接入点和移动站
EP1448000A1 (fr) 2003-02-05 2004-08-18 TeliaSonera Finland Oyj Procédé et système permettant d'authentifier un abboné
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JP2010279057A (ja) * 2003-03-27 2010-12-09 Thomson Licensing 無線アクセスポイント間での安全なローミング
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JP2006521763A (ja) * 2003-03-27 2006-09-21 トムソン ライセンシング 無線アクセスポイント間での安全なローミング
JP2007524271A (ja) * 2003-06-27 2007-08-23 オラクル・インターナショナル・コーポレイション 異なるアクセス機構およびネットワーク技術を超えたローミング
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JP2004514383A (ja) 2004-05-13

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