CA2221231A1 - System and method for providing seamless handover in a wireless computer network - Google Patents

System and method for providing seamless handover in a wireless computer network

Info

Publication number
CA2221231A1
CA2221231A1 CA002221231A CA2221231A CA2221231A1 CA 2221231 A1 CA2221231 A1 CA 2221231A1 CA 002221231 A CA002221231 A CA 002221231A CA 2221231 A CA2221231 A CA 2221231A CA 2221231 A1 CA2221231 A1 CA 2221231A1
Authority
CA
Canada
Prior art keywords
mobile station
access point
computer network
wireless computer
data
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002221231A
Other languages
French (fr)
Other versions
CA2221231C (en
Inventor
Wilhelmus J. M. Diepstraten
Leo Monteban
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia of America Corp
Original Assignee
Lucent Technologies 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
Application filed by Lucent Technologies Inc filed Critical Lucent Technologies Inc
Publication of CA2221231A1 publication Critical patent/CA2221231A1/en
Application granted granted Critical
Publication of CA2221231C publication Critical patent/CA2221231C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/02—Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

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

Abstract

For use with a wireless computer network having a plurality of access points, a mobile station adapted for communicating with the network via a current access point and having a scanning circuit for locating a new access point, the scanning circuit requiring a scanning period for time to locate the new access point, a method of operation of the mobile station and a wireless computer network infrastructure. The mobile station comprises: (1) a detection circuit that generates a ready-to scan signal indicating that the mobile station is about to activate the scanning circuit and (2) a suspension circuit, coupled to the detection circuit, that receives the ready-to-scan signal and generates, in response thereto, a data suspend signal for transmission to the current access point, the data suspend signal causing the current access point to suspend transmission of data to the mobile station, thereby preventing loss of the data during the scanning period.
CA002221231A 1996-12-30 1997-11-17 System and method for providing seamless handover in a wireless computer network Expired - Fee Related CA2221231C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US775,122 1996-12-30
US08/775,122 US5991287A (en) 1996-12-30 1996-12-30 System and method for providing seamless handover in a wireless computer network

Publications (2)

Publication Number Publication Date
CA2221231A1 true CA2221231A1 (en) 1998-06-30
CA2221231C CA2221231C (en) 2001-03-27

Family

ID=25103391

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002221231A Expired - Fee Related CA2221231C (en) 1996-12-30 1997-11-17 System and method for providing seamless handover in a wireless computer network

Country Status (5)

Country Link
US (1) US5991287A (en)
EP (1) EP0851631B1 (en)
JP (1) JPH10210053A (en)
KR (1) KR100558582B1 (en)
CA (1) CA2221231C (en)

Families Citing this family (131)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8606851B2 (en) 1995-06-06 2013-12-10 Wayport, Inc. Method and apparatus for geographic-based communications service
US5835061A (en) 1995-06-06 1998-11-10 Wayport, Inc. Method and apparatus for geographic-based communications service
EP0976211B1 (en) 1998-01-16 2007-02-28 Symbol Technologies, Inc. Infrastructure for wireless lans
JP3641128B2 (en) * 1998-02-20 2005-04-20 株式会社東芝 MOBILE COMPUTER DEVICE, MOBILE COMPUTER MANAGEMENT DEVICE, MOBILE COMPUTER MANAGEMENT METHOD, AND COMMUNICATION CONTROL METHOD
CN1221110C (en) * 1998-07-17 2005-09-28 松下电器产业株式会社 Communication system, its network juncture, radio information terminal and radio communication method
AU5910999A (en) * 1998-09-11 2000-04-03 Sharewave, Inc. Dynamic communication channel switching for computer networks
US6304899B1 (en) * 1998-10-08 2001-10-16 International Business Machines Corporation Data processing system and method for powering-on a remote client computer system utilizing a wireless signal
US6272541B1 (en) * 1998-10-08 2001-08-07 International Business Machines Corporation Data processing system and method for determining a physical location of a client computer system coupled to a server via a physical network
US6590884B1 (en) * 1999-01-07 2003-07-08 Texas Instruments Incorporated Method and apparatus providing spatial diversity within an indoor network
EP1033896A3 (en) * 1999-03-04 2000-10-18 Canon Kabushiki Kaisha Method and device for communicating a message on a network and systems using them.
US8462810B2 (en) 1999-05-21 2013-06-11 Wi-Lan, Inc. Method and system for adaptively obtaining bandwidth allocation requests
US20090219879A1 (en) 1999-05-21 2009-09-03 Wi-Lan, Inc. Method and apparatus for bandwidth request/grant protocols in a wireless communication system
US7006530B2 (en) 2000-12-22 2006-02-28 Wi-Lan, Inc. Method and system for adaptively obtaining bandwidth allocation requests
US6925068B1 (en) 1999-05-21 2005-08-02 Wi-Lan, Inc. Method and apparatus for allocating bandwidth in a wireless communication system
US6891820B1 (en) * 1999-07-06 2005-05-10 Broadcom Corporation Utilization of the internet protocol to facilitate communication involving mobile devices
US6477373B1 (en) * 1999-08-10 2002-11-05 Research Foundation Of State University Of New York Method and apparatus to maintain connectivity for mobile terminals in wireless and cellular communications systems
AU7594800A (en) * 1999-10-22 2001-05-08 Microsoft Corporation A method for communicating with multiple network nodes
EP1226697B1 (en) * 1999-11-03 2010-09-22 Wayport, Inc. Distributed network communication system which enables multiple network providers to use a common distributed network infrastructure
US20020196763A1 (en) * 1999-12-08 2002-12-26 Reynolds Russell R. Wireless network system software protocol
WO2001043467A1 (en) * 1999-12-08 2001-06-14 Proxim, Inc. Flexible wireless lan architecture based on a communication server
JP3338818B2 (en) * 1999-12-14 2002-10-28 エヌイーシーインフロンティア株式会社 Power management system for wireless LAN terminals
US6961762B1 (en) * 2000-02-14 2005-11-01 Sygate Technologies, Inc. Automatic switching network points based on configuration profiles
FI109163B (en) * 2000-02-24 2002-05-31 Nokia Corp Method and apparatus for supporting mobility in a telecommunication system
FI120478B (en) * 2000-02-24 2009-10-30 Nokia Corp Method and apparatus for connecting to a telecommunications network
US7173923B2 (en) 2000-03-17 2007-02-06 Symbol Technologies, Inc. Security in multiple wireless local area networks
US7173922B2 (en) 2000-03-17 2007-02-06 Symbol Technologies, Inc. Multiple wireless local area networks occupying overlapping physical spaces
US7284266B1 (en) * 2000-03-21 2007-10-16 Broadcom Corporation System and method for secure biometric identification
US20020022483A1 (en) * 2000-04-18 2002-02-21 Wayport, Inc. Distributed network communication system which allows multiple wireless service providers to share a common network infrastructure
DE10020966A1 (en) * 2000-04-28 2001-10-31 Tenovis Gmbh & Co Kg Telecommunication device, radio station and telecommunication system
US7308279B1 (en) 2000-08-18 2007-12-11 Nortel Networks Limited Dynamic power level control on transmitted messages in a wireless LAN
US7366103B2 (en) * 2000-08-18 2008-04-29 Nortel Networks Limited Seamless roaming options in an IEEE 802.11 compliant network
US7280495B1 (en) * 2000-08-18 2007-10-09 Nortel Networks Limited Reliable broadcast protocol in a wireless local area network
US7339892B1 (en) 2000-08-18 2008-03-04 Nortel Networks Limited System and method for dynamic control of data packet fragmentation threshold in a wireless network
US6947483B2 (en) * 2000-08-18 2005-09-20 Nortel Networks Limited Method, apparatus, and system for managing data compression in a wireless network
TW532040B (en) 2000-10-20 2003-05-11 Koninkl Philips Electronics Nv Method and system for transferring a communication session
US6839331B2 (en) * 2000-11-02 2005-01-04 Sharp Laboratories Of America, Inc. Method to dynamically change all MIB parameters of a wireless data network
EP1206069A1 (en) * 2000-11-08 2002-05-15 AT&T Corp. Quality of service maintenance of a wireless link in a wireless LAN
US6816493B2 (en) * 2001-03-09 2004-11-09 Motorola, Inc. Method and apparatus employing a mediation device to facilitate communication among devices in an asynchronous communications network
US7171476B2 (en) * 2001-04-20 2007-01-30 Motorola, Inc. Protocol and structure for self-organizing network
US7251222B2 (en) * 2001-05-15 2007-07-31 Motorola, Inc. Procedures for merging the mediation device protocol with a network layer protocol
US6693888B2 (en) * 2001-06-06 2004-02-17 Networks Associates Technology, Inc. Method and apparatus for filtering that specifies the types of frames to be captured and to be displayed for an IEEE802.11 wireless LAN
US7353416B2 (en) * 2001-07-25 2008-04-01 Hewlett-Packard Development Company, L.P. Wireless access point seek mode for wireless access clients
US20030039226A1 (en) * 2001-08-24 2003-02-27 Kwak Joseph A. Physical layer automatic repeat request (ARQ)
US8014305B1 (en) * 2001-09-07 2011-09-06 Qualcomm Atheros, Inc. Wireless LAN using transmission monitoring
US6674738B1 (en) * 2001-09-17 2004-01-06 Networks Associates Technology, Inc. Decoding and detailed analysis of captured frames in an IEEE 802.11 wireless LAN
US7269448B2 (en) * 2001-11-09 2007-09-11 Electronics And Telecommunications Research Institute Method for recognizing request for data transmission by mobile/base station RRC using network transfer device
JP2003158481A (en) * 2001-11-21 2003-05-30 Nec Corp Radio access communication system
US6760318B1 (en) * 2002-01-11 2004-07-06 Airflow Networks Receiver diversity in a communication system
US7149196B1 (en) 2002-01-11 2006-12-12 Broadcom Corporation Location tracking in a wireless communication system using power levels of packets received by repeaters
US7515557B1 (en) 2002-01-11 2009-04-07 Broadcom Corporation Reconfiguration of a communication system
US8027637B1 (en) 2002-01-11 2011-09-27 Broadcom Corporation Single frequency wireless communication system
US7672274B2 (en) 2002-01-11 2010-03-02 Broadcom Corporation Mobility support via routing
US7876704B1 (en) 2002-01-11 2011-01-25 Broadcom Corporation Tunneling protocols for wireless communications
US6862448B1 (en) * 2002-01-11 2005-03-01 Broadcom Corporation Token-based receiver diversity
US7689210B1 (en) 2002-01-11 2010-03-30 Broadcom Corporation Plug-n-playable wireless communication system
US6788658B1 (en) 2002-01-11 2004-09-07 Airflow Networks Wireless communication system architecture having split MAC layer
US7130289B2 (en) * 2002-03-14 2006-10-31 Airmagnet, Inc. Detecting a hidden node in a wireless local area network
KR100424620B1 (en) * 2002-03-27 2004-03-25 삼성전자주식회사 Apparatus and method for providing mobility of mobile node among the sub-networks in wireless local area network
US20030186679A1 (en) * 2002-03-27 2003-10-02 International Business Machines Corporation Methods, apparatus and program product for monitoring network security
US7158778B2 (en) * 2002-04-11 2007-01-02 Intel Corporation Method for virtual network connectivity for powered off stations in wireless LAN networks
EP1355505B1 (en) * 2002-04-11 2013-07-24 Accenture Global Services Limited Localization of radio-frequency transceivers
US7440462B2 (en) * 2002-05-23 2008-10-21 Motorola, Inc. Quality of service (QOS) control mechanisms using mediation devices in an asynchronous network
US7492773B2 (en) * 2002-05-23 2009-02-17 Motorola, Inc. Media access control and distributed data processing using mediation devices in an asynchronous network
US20030233580A1 (en) * 2002-05-29 2003-12-18 Keeler James D. Authorization and authentication of user access to a distributed network communication system with roaming features
US7113498B2 (en) * 2002-06-05 2006-09-26 Broadcom Corporation Virtual switch
CN1309266C (en) * 2002-06-06 2007-04-04 摩托罗拉公司(在特拉华州注册的公司) Protocol and structure for mobile nodes in a self-organizing communication network
US8787988B2 (en) 2003-01-29 2014-07-22 Intellectual Ventures I Llc Power management for wireless direct link
US7933293B2 (en) * 2002-06-12 2011-04-26 Xocyst Transfer Ag L.L.C. Link margin notification using return frame
US6791962B2 (en) * 2002-06-12 2004-09-14 Globespan Virata, Inc. Direct link protocol in wireless local area networks
US8050360B2 (en) * 2002-06-12 2011-11-01 Intellectual Ventures I Llc Direct link relay in a wireless network
US7948951B2 (en) * 2002-06-12 2011-05-24 Xocyst Transfer Ag L.L.C. Automatic peer discovery
USRE43127E1 (en) 2002-06-12 2012-01-24 Intellectual Ventures I Llc Event-based multichannel direct link
JP3654284B2 (en) 2002-10-03 2005-06-02 日本電気株式会社 Wireless terminal apparatus and wireless communication system using the same
US7590079B2 (en) * 2002-10-25 2009-09-15 Motorola, Inc. Method of communication device initiated frame exchange
US7907564B2 (en) * 2002-11-12 2011-03-15 Cisco Technology, Inc. Method and apparatus for supporting user mobility in a communication system
US7693117B2 (en) * 2002-12-16 2010-04-06 Avaya Inc. Power-saving mechanism for periodic traffic streams in wireless local-area networks
DE10261201A1 (en) * 2002-12-20 2004-07-15 Philips Semiconductors Dresden Ag Method for establishing a connection between a mobile station and a communication network
US7593718B2 (en) * 2002-12-31 2009-09-22 Motorola, Inc. WLAN communication system and method with mobile base station
KR100580244B1 (en) * 2003-01-23 2006-05-16 삼성전자주식회사 A handoff method in wirelessLAN
US20050047381A1 (en) * 2003-01-27 2005-03-03 Proxim Corporation, A Delaware Corporation System and method for a topology map related to access point usage in a wireless network
US20050014505A1 (en) * 2003-01-27 2005-01-20 Proxim Corporation, A Delaware Corporation System and method for sending data to a mobile device in a wireless network
US7340615B2 (en) * 2003-01-31 2008-03-04 Microsoft Corporation Method and apparatus for managing power in network interface modules
US20040255008A1 (en) * 2003-04-21 2004-12-16 International Business Machines Corporation System for low power operation of wireless LAN
JP4478686B2 (en) * 2003-05-28 2010-06-09 シンボル テクノロジーズ， インコーポレイテッド Backup cell controller
JP2007504786A (en) * 2003-05-28 2007-03-01 シンボル テクノロジーズ， インコーポレイテッド Improved wireless network cell controller
US20050036465A1 (en) * 2003-06-30 2005-02-17 Shai Waxman Device, system and method of signal detection for wireless network
US7447177B2 (en) * 2003-08-26 2008-11-04 Intel Corporation Method and apparatus of secure roaming
US20050130634A1 (en) * 2003-10-31 2005-06-16 Globespanvirata, Inc. Location awareness in wireless networks
KR100590866B1 (en) * 2003-12-04 2006-06-19 삼성전자주식회사 apparatus and method for registering wireless terminal using wireless network
US6917598B1 (en) * 2003-12-19 2005-07-12 Motorola, Inc. Unscheduled power save delivery method in a wireless local area network for real time communication
US7466678B2 (en) * 2003-12-29 2008-12-16 Lenovo (Singapore) Pte. Ltd. System and method for passive scanning of authorized wireless channels
US8526950B2 (en) * 2003-12-30 2013-09-03 Nokia Corporation Determining handover based on state of mobile terminal
US7603146B2 (en) * 2004-01-12 2009-10-13 Avaya Inc. Efficient power management in wireless local area networks
DE102004004681A1 (en) * 2004-01-29 2005-08-25 Deutsche Telekom Ag Handover method in mobile communication terminal in at least one internet based (IP) radio network from first to second radio network access appliance
US7969937B2 (en) * 2004-03-23 2011-06-28 Aruba Networks, Inc. System and method for centralized station management
US9432848B2 (en) 2004-03-23 2016-08-30 Aruba Networks, Inc. Band steering for multi-band wireless clients
US20050261970A1 (en) * 2004-05-21 2005-11-24 Wayport, Inc. Method for providing wireless services
DE102004040406B4 (en) * 2004-08-19 2008-07-31 Nec Europe Ltd. A method for improving the quality of service (QoS) in a wireless network
KR100630170B1 (en) 2004-09-17 2006-09-29 삼성전자주식회사 A Method and An Apparatus for Managing Demodulation Timing of UE by cells In Asynchronous Mobile Telecommunication Syatem
KR100678147B1 (en) * 2005-01-05 2007-02-02 삼성전자주식회사 Method and apparatus controlling timer of relation to automatic retransmission request in wireless broadband internet system and the system therefor
US8005032B2 (en) * 2005-01-21 2011-08-23 Research In Motion Limited Maintaining delivery traffic indication message (DTIM) periods on a per-wireless client device basis
US7593417B2 (en) * 2005-01-21 2009-09-22 Research In Motion Limited Handling broadcast and multicast traffic as unicast traffic in a wireless network
US7813295B2 (en) * 2005-03-09 2010-10-12 Broadcom Corporation Co-location interference avoidance in multiple protocol communication networks
US20070104145A1 (en) * 2005-11-08 2007-05-10 Hsiao-Shun Jan Data accessing method for a wireless communication device performing a handover operation between wireless stations
US7672248B2 (en) * 2006-06-13 2010-03-02 Scenera Technologies, Llc Methods, systems, and computer program products for automatically changing network communication configuration information when a communication session is terminated
US7570927B2 (en) * 2006-06-16 2009-08-04 Motorola, Inc. Decentralized wireless communication network and method having a plurality of devices
CN101141335A (en) * 2006-09-07 2008-03-12 日电（中国）有限公司 Subscriber terminal based fast skip zone switching method and equipment
US9179394B2 (en) * 2006-10-20 2015-11-03 Stmicroelectronics, Inc. Apparatus and method for coordinated sensing of wireless devices in a communication system
JP5290511B2 (en) * 2006-11-29 2013-09-18 京セラ株式会社 Wireless communication terminal and handoff method in wireless communication terminal
TWI329466B (en) * 2006-12-01 2010-08-21 Hon Hai Prec Ind Co Ltd Mobile station and method for verifying an access point thereof
US20080159204A1 (en) * 2006-12-28 2008-07-03 Qi Emily H Techniques for lossless packet transition across basic service sets in wireless networks
US20080176515A1 (en) * 2007-01-19 2008-07-24 Hiles Paul E Wireless hotspot detection system and method
KR101398628B1 (en) * 2007-02-12 2014-05-22 삼성전자주식회사 Handoff Control System by Using Power Save Mode and Handoff Control Method Thereof
US8261327B2 (en) 2007-07-12 2012-09-04 Wayport, Inc. Device-specific authorization at distributed locations
KR100989716B1 (en) * 2008-01-21 2010-10-26 엘지전자 주식회사 Method for suspending and resuming delivery of content
US8566839B2 (en) 2008-03-14 2013-10-22 William J. Johnson System and method for automated content presentation objects
US8600341B2 (en) 2008-03-14 2013-12-03 William J. Johnson System and method for location based exchanges of data facilitating distributed locational applications
US8761751B2 (en) 2008-03-14 2014-06-24 William J. Johnson System and method for targeting data processing system(s) with data
US8634796B2 (en) 2008-03-14 2014-01-21 William J. Johnson System and method for location based exchanges of data facilitating distributed location applications
US8639267B2 (en) 2008-03-14 2014-01-28 William J. Johnson System and method for location based exchanges of data facilitating distributed locational applications
CN101562871B (en) * 2008-04-18 2011-09-28 鸿富锦精密工业（深圳）有限公司 Mobile station and method for preventing attack
KR101039617B1 (en) * 2008-05-02 2011-06-09 삼성전자주식회사 Method and Apparatus for data transmission in a wireless local access network and System therefor
US20090279503A1 (en) 2008-05-11 2009-11-12 Qualcomm Incorporated Systems and methods for multimode wireless communication handoff
US9036599B2 (en) 2008-05-11 2015-05-19 Qualcomm Incorporated Systems and methods for multimode wireless communication handoff
US8699450B2 (en) 2008-05-11 2014-04-15 Qualcomm Incorporated Systems and methods for multimode wireless communication handoff
CN101610558B (en) * 2008-06-16 2013-02-13 鸿富锦精密工业（深圳）有限公司 Mobile terminal device and wandering method thereof
US8897741B2 (en) 2009-11-13 2014-11-25 William J. Johnson System and method for mobile device usability by locational conditions
EP2823413A4 (en) 2012-03-07 2016-05-04 Snap Trends Inc Methods and systems of aggregating information of social networks based on geographical locations via a network
US9477991B2 (en) 2013-08-27 2016-10-25 Snap Trends, Inc. Methods and systems of aggregating information of geographic context regions of social networks based on geographical locations via a network
US9894489B2 (en) 2013-09-30 2018-02-13 William J. Johnson System and method for situational proximity observation alerting privileged recipients
US10237824B2 (en) * 2015-03-24 2019-03-19 Avago Technologies International Sales Pte. Limited Power efficient networking

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5673031A (en) * 1988-08-04 1997-09-30 Norand Corporation Redundant radio frequency network having a roaming terminal communication protocol
US5815811A (en) * 1989-06-29 1998-09-29 Symbol Technologies, Inc. Preemptive roaming in a cellular local area wireless network
GB9223890D0 (en) * 1992-11-13 1993-01-06 Ncr Int Inc Wireless local area network system
GB9300310D0 (en) * 1993-01-08 1993-03-03 Ncr Int Inc Handover method for mobile wireless station
GB9321657D0 (en) * 1993-10-20 1993-12-08 Ncr Int Inc Power management system for a wireless network
US5570084A (en) * 1994-06-28 1996-10-29 Metricom, Inc. Method of loose source routing over disparate network types in a packet communication network
JP3223055B2 (en) * 1994-11-11 2001-10-29 株式会社日立製作所 Wireless LAN system and base station device thereof
CA2137587C (en) * 1994-12-08 1999-03-23 Murray Charles Baker Broadcast/multicast filtering by the bridge-based access point
JP3251797B2 (en) * 1995-01-11 2002-01-28 富士通株式会社 Wireless LAN system
US5533026A (en) * 1995-03-06 1996-07-02 International Business Machines Corporation Communication system including method and apparatus for maintaining communications with a mobile terminal
US5572528A (en) * 1995-03-20 1996-11-05 Novell, Inc. Mobile networking method and apparatus
US5768531A (en) * 1995-03-27 1998-06-16 Toshiba America Information Systems Apparatus and method for using multiple communication paths in a wireless LAN
US5633888A (en) * 1995-06-05 1997-05-27 Advanced Micro Devices, Inc. Method of using an access point adjacency matrix to establish handoff in a wireless LAN
US5774461A (en) * 1995-09-27 1998-06-30 Lucent Technologies Inc. Medium access control and air interface subsystem for an indoor wireless ATM network
US5987062A (en) * 1995-12-15 1999-11-16 Netwave Technologies, Inc. Seamless roaming for wireless local area networks

Also Published As

Publication number Publication date
EP0851631A3 (en) 2000-11-22
KR100558582B1 (en) 2006-06-23
JPH10210053A (en) 1998-08-07
EP0851631B1 (en) 2011-07-13
KR19980064775A (en) 1998-10-07
EP0851631A2 (en) 1998-07-01
CA2221231C (en) 2001-03-27
US5991287A (en) 1999-11-23

Similar Documents

Publication Publication Date Title
CA2221231A1 (en) System and method for providing seamless handover in a wireless computer network
CA2216225A1 (en) System, method and apparatus for soft handoff
CA2307754A1 (en) Handoff device and method for mobile communication system
TW357314B (en) Coordinate input device
CA2228744A1 (en) Method and apparatus for time division duplex pilot signal generation
CA2143761A1 (en) A Method of Performing Handoff in a Cellular Communication System
MY122199A (en) Method and apparatus for determining if a mobile station is present in an area
EP0984652B8 (en) Method and device for communication on a network
MY106895A (en) Multiple access handling in a cellular communications system
WO1998036588A3 (en) Method of and apparatus for merging pilot neighbor lists in a mobile telephone system
CA2290584A1 (en) Method of continuously transmitting user data on a reverse common channel in a mobile communication system
EP0981254A3 (en) Handoff method selection in a CDMA mobile communication system
MY118178A (en) Method and apparatus for performing soft hand-off in a wireless communication system.
NZ503841A (en) Method and apparatus for high rate packet data transmission in cellular or radio network
CA2255349A1 (en) Method and apparatus for delivering local information to travelers
HK1038128A1 (en) Determining the position of a mobile station in a cdma cellular telephone system
EP1183882A4 (en) Method and apparatus in a wireless communication system for adaptively selecting a resolution for determining and reporting location information
HK1048374A1 (en) Method for communication within a vehicle dispatchsystem.
ATE517535T1 (en) TEMPORARY INTERRUPTION OF SERVICE FOR HIGH SPEED DATA TRANSMISSION
HK1023471A1 (en) Seamless handoff system and method.
MY133733A (en) Communication system with a mobile terminal supporting mobile assisted signal strenght measurements for a plurality of networks and methods for operating the same
GB2346297A (en) Radio link short hold mode for mobile circuit data applications
EP0863682A4 (en) Mobile communication system
CA2212420A1 (en) Method of mobile communication using orthogonal alert codes
EP2271158A3 (en) Device and method for communication between base station and subscriber unit in CDMA communication system

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20171117

MKLA Lapsed

Effective date: 20171117