WO2004107638A2 - Improved wireless network cell controller - Google Patents

Improved wireless network cell controller Download PDF

Info

Publication number
WO2004107638A2
WO2004107638A2 PCT/US2004/016804 US2004016804W WO2004107638A2 WO 2004107638 A2 WO2004107638 A2 WO 2004107638A2 US 2004016804 W US2004016804 W US 2004016804W WO 2004107638 A2 WO2004107638 A2 WO 2004107638A2
Authority
WO
WIPO (PCT)
Prior art keywords
cell controller
ports
functions
perform
mobile units
Prior art date
Application number
PCT/US2004/016804
Other languages
French (fr)
Other versions
WO2004107638A3 (en
Inventor
Frank James
John Klein
Robert Beach
Original Assignee
Symbol 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 Symbol Technologies, Inc. filed Critical Symbol Technologies, Inc.
Priority to JP2006533472A priority Critical patent/JP2007504786A/en
Priority to EP04753606A priority patent/EP1634466A4/en
Publication of WO2004107638A2 publication Critical patent/WO2004107638A2/en
Publication of WO2004107638A3 publication Critical patent/WO2004107638A3/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices
    • H04W88/085Access point devices with remote components
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W80/00Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/04Network layer protocols, e.g. mobile IP [Internet Protocol]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10Small scale networks; Flat hierarchical networks
    • H04W84/12WLAN [Wireless Local Area Networks]

Definitions

  • the present invention related to improved cell controllers for wireless networks, and particularly for wireless networks that use the IEEE Standard 802.11 Protocol for wireless communications between a computer or a wired network and mobile units.
  • RF Ports are provided for communicating (e.g. relaying signals and messages) with mobile units
  • at least one cell controller is provided for relaying data communications packets between a wired network and the RF Ports, and wherein the cell controller is arranged to perform association and roaming functions for the RF Ports including, for example, sending and receiving association signals between said RF port and said cell controller.
  • the improvement the cell controller is further arranged to perform network control functions (e.g., Layer 3 networking functions of the common seven-layer open system interconnection (OSI) reference model).
  • the Layer 3 functions may include filtering addressing, routing, packet formation, Internet protocol (LP) and Quality of Service (QoS) functions.
  • the cell controller performs IP routing functions for the wired network.
  • the cell controller is arranged to perform QoS functions for data packets.
  • Figure 1 is a block diagram showing a local area network including arrangements for wireless data communications with mobile units according to the prior art.
  • FIG. 2 is a block diagram of a local area network including arrangements for wireless data communications in accordance with the principles of the present invention.
  • Network 10 includes a router 12, which directs messages within the wired network according to the Internet address and other characteristics of the message.
  • the functions performed by router 12 in addition to switching messages are referred to as layer 3 functions.
  • network management which may include prioritization of message traffic.
  • packet messages include an LP address field identifying the destination of the message.
  • the router uses the data in this field to send the packet to the corresponding destination, which may be an access point for further relay over the AP35063 - 072797.0143 wireless media, a server such as servers 14 or 16, or a wide area network interface 18.
  • router 12 Among the functions performed by router 12 are filtering functions that involve message priority, called Quality of Service (QoS) functions, such as giving priority to message packets to or from destinations associated with emergency functions, such as security.
  • QoS Quality of Service
  • VoIP voice over LP
  • the router 12 may have functions involving messages that require encrypting and their transmission over encrypted links.
  • the router 12 may function to direct packets to a portal associated with a virtual network sharing the local area network.
  • the system 10 illustrated for example in figure 1 includes a first network branch A having conventional access points 20A, 22A and 24A.
  • a second branch B includes access points 20B, 22B, and 24B.
  • a cell controller 25 connected to a third branch C and having RF Ports 32C and 34C.
  • the access points and RF ports communicate with associated mobile units 26, 28 and 30.
  • the combination of the cell controller and RF Ports provide the functions alternately provided by the access points.
  • FIG 2 there is shown an exemplary embodiment of the improvement according to the invention wherein the cell controller 48 is arranged to carry out functions usually provided by a router 12, a switching hub or a bridging switch, in connection with local area network layer 3 filtering and switching, in addition to providing higher level MAC functions for the RF Ports connected thereto.
  • the arrangement of figure 2 includes the two servers 14, 16 and WAN interface 18 of the system 10 of figure 1, which are directly connected to ports of cell controller 48.
  • Cell controller 48 is also connected directly by an ethernet cable to RF Ports 50, 52, 54, 56, 58, as described in the referenced co-pending application, which communicate with mobile units 42, 44.
  • cell controller 48 is configured to provide LP routing, priority and QoS, switching and packet functions usually provided by router 12 in the configuration of figure 1, and additionally provides the higher level MAC functions usually performed by access points or the cell controller 25 of the system of figure 1. Additionally the cell controller 48 can use the identification of mobile units (e.g., Extended Service Set Identifiers (ESSLD)) to route packets and assign priority to packets. In addition, cell controller 48 can analyze network traffic and perform AP35063 - 072797.0143 management of network traffic to and from RF Ports.
  • mobile units e.g., Extended Service Set Identifiers (ESSLD)
  • ESSLD Extended Service Set Identifiers
  • cell controller 48 can analyze network traffic and perform AP35063 - 072797.0143 management of network traffic to and from RF Ports.
  • the cell controller 48 which controls the association and roaming functions for the RF Ports, can operate to reassign mobile units to other, less-burdened RF Ports. Since the cell controller has direct control over the operation of the RF Ports, it is in a better position to perform such asset and traffic management functions than router 12 of the system of figure 1.
  • the arrangement of the system of figure 2 eliminates the additional hardware associated with the router 12 of system 10 of figure 1 and enables more efficient control of network traffic.
  • the system administrator can specify the amount of system bandwidth allocated to various users by their ESSLD, and use the cell controller 48 of figure 2 to manage the allocation and give preferential or non- preferential treatment to packets based on ESSLD identification in each packet.
  • system of figure 2 can be expanded to include one or more additional cell controllers and associated RF Ports.
  • duties and rales concerning network management must be established in all cell controllers and coordinated between them to provide effective network management.

Abstract

A local area network is provided with a cell controller (48) that operates with RF Ports (50-58) and provides the higher level MAC functions of an access point. In addition the cell controller replaces the router usually used in the local area network to provide layer (3) routing and filtering functions.

Description

IMPROVED WIRELESS NETWORK CELL CONTROLLER
SPECIFICATION CROSS-REFERENCE TO RELATED APPLICATION
This application claims the benefit of U.S. provisional patent application Serial No. 60/473,755, filed on May 28, 2004.
BACKGROUND OF INVENTION The present invention related to improved cell controllers for wireless networks, and particularly for wireless networks that use the IEEE Standard 802.11 Protocol for wireless communications between a computer or a wired network and mobile units.
In co-assigned and co-pending U. S. patent application Serial Number 09/528,697, filed March 17, 2000, which is hereby incorporated by reference in its entirety herein, there is described an improved arrangement for carrying out wireless data communications wherein access points are replaced with simplified RF Ports, and wherein certain higher level medium access control (MAC) functions of the access points, such as association and roaming functions are carried out in a cell controller which preferably is a board level personal computer.
It is an object of the present invention to provide an improved cell controller that performs additional functions of a local area network. )
SUMMARY OF THE INVENTION In accordance with the invention there is provided an improvement in a data communications system wherein RF Ports are provided for communicating (e.g. relaying signals and messages) with mobile units, wherein at least one cell controller is provided for relaying data communications packets between a wired network and the RF Ports, and wherein the cell controller is arranged to perform association and roaming functions for the RF Ports including, for example, sending and receiving association signals between said RF port and said cell controller. In accordance with AP35063 - 072797.0143 the improvement the cell controller is further arranged to perform network control functions (e.g., Layer 3 networking functions of the common seven-layer open system interconnection (OSI) reference model). The Layer 3 functions may include filtering addressing, routing, packet formation, Internet protocol (LP) and Quality of Service (QoS) functions.
In one arrangement the cell controller performs IP routing functions for the wired network. In addition, or alternatively, the cell controller is arranged to perform QoS functions for data packets.
For a better understanding of the present invention, together with other and further objects thereof, reference is made to the following description, taken in conjunction with the accompanying drawings, and its scope will be pointed out in the appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a block diagram showing a local area network including arrangements for wireless data communications with mobile units according to the prior art.
Figure 2 is a block diagram of a local area network including arrangements for wireless data communications in accordance with the principles of the present invention.
DESCRIPTION OF THE INVENTION
Referring to figure 1 there is shown an example of a local area network 10, which includes arrangements for wireless data communications with mobile units according to the prior art. Network 10 includes a router 12, which directs messages within the wired network according to the Internet address and other characteristics of the message. The functions performed by router 12 in addition to switching messages are referred to as layer 3 functions. Among the additional the functions performed by router 12 are network management, which may include prioritization of message traffic. Typically packet messages include an LP address field identifying the destination of the message. The router uses the data in this field to send the packet to the corresponding destination, which may be an access point for further relay over the AP35063 - 072797.0143 wireless media, a server such as servers 14 or 16, or a wide area network interface 18. Among the functions performed by router 12 are filtering functions that involve message priority, called Quality of Service (QoS) functions, such as giving priority to message packets to or from destinations associated with emergency functions, such as security. In addition, voice over LP (VoLP) messages may be given priority to provide continuous voice service at the destination. Further the router 12 may have functions involving messages that require encrypting and their transmission over encrypted links. Further, the router 12 may function to direct packets to a portal associated with a virtual network sharing the local area network. The system 10 illustrated for example in figure 1 includes a first network branch A having conventional access points 20A, 22A and 24A. A second branch B includes access points 20B, 22B, and 24B. Also illustrated is an arrangement described in the referenced co-pending application that includes a cell controller 25 connected to a third branch C and having RF Ports 32C and 34C. The access points and RF ports communicate with associated mobile units 26, 28 and 30. In this arrangement the combination of the cell controller and RF Ports provide the functions alternately provided by the access points.
Referring to figure 2 there is shown an exemplary embodiment of the improvement according to the invention wherein the cell controller 48 is arranged to carry out functions usually provided by a router 12, a switching hub or a bridging switch, in connection with local area network layer 3 filtering and switching, in addition to providing higher level MAC functions for the RF Ports connected thereto. The arrangement of figure 2 includes the two servers 14, 16 and WAN interface 18 of the system 10 of figure 1, which are directly connected to ports of cell controller 48. Cell controller 48 is also connected directly by an ethernet cable to RF Ports 50, 52, 54, 56, 58, as described in the referenced co-pending application, which communicate with mobile units 42, 44. Accordingly cell controller 48 is configured to provide LP routing, priority and QoS, switching and packet functions usually provided by router 12 in the configuration of figure 1, and additionally provides the higher level MAC functions usually performed by access points or the cell controller 25 of the system of figure 1. Additionally the cell controller 48 can use the identification of mobile units (e.g., Extended Service Set Identifiers (ESSLD)) to route packets and assign priority to packets. In addition, cell controller 48 can analyze network traffic and perform AP35063 - 072797.0143 management of network traffic to and from RF Ports. For example, if a particular RF Port has association with an excess or disproportunate number of mobile units (e.g., at a gathering of a large number of users for a meeting), the cell controller 48, which controls the association and roaming functions for the RF Ports, can operate to reassign mobile units to other, less-burdened RF Ports. Since the cell controller has direct control over the operation of the RF Ports, it is in a better position to perform such asset and traffic management functions than router 12 of the system of figure 1.
The arrangement of the system of figure 2 eliminates the additional hardware associated with the router 12 of system 10 of figure 1 and enables more efficient control of network traffic. The system administrator can specify the amount of system bandwidth allocated to various users by their ESSLD, and use the cell controller 48 of figure 2 to manage the allocation and give preferential or non- preferential treatment to packets based on ESSLD identification in each packet.
Those skilled in the art will recognize that the system of figure 2 can be expanded to include one or more additional cell controllers and associated RF Ports. In this case, duties and rales concerning network management must be established in all cell controllers and coordinated between them to provide effective network management.
While there have been described what are believed to be the preferred embodiments of the invention, those skilled in the art will recognize that other and further changes and modifications may be made thereto without departing from the spirit of the invention and it is intended to claim all such changes and modifications as fall within the true scope of the invention.

Claims

AP35063 - 072797.0143 WE CLAIM:
1. In a wireless data communications system, wherein RF Ports are provided for communicating with mobile units, wherein at least one cell controller is provided for relaying data communications packets between a wired network and said RF Ports, and wherein said cell controller is arranged to perform association and roaming functions for said RF Ports, the improvement wherein said cell controller is further arranged to perform layer 3 network control functions.
2. The improvement specified in claim 1 wherein said layer 3 network control functions comprise filtering and switching functions.
3. The improvement specified in claim 1 wherein said cell controller is arranged to perform routing functions.
4. The improvement specified in claim 1 wherein said cell controller is arranged to perform Quality of Service functions.
5. The improvement specified in claim 1 wherein said cell controller is arranged to perform packet formation functions.
6. The improvement specified in claim 1 wherein said cell controller is arranged to perform addressing functions.
7. In a wireless data communications system, wherein RF Ports are provided for communicating with mobile units, wherein at least one cell controller is provided for relaying data communications packets between a wired network and said RF Ports, and wherein said cell controller is arranged to perform association and roaming functions for said RF Ports, the improvement wherein said cell controller is further arranged to perform a function of a router.
8. The improvement specified in claim 7 wherein said cell controller is arranged to perform asset and traffic management functions of a router.
9. The improvement specified in claim 7 wherein said cell controller is arranged to control the assignment of mobile units to the RF ports.
10. The improvement specified in claim 7 wherein said cell controller is arranged to manage bandwidth allocations based on mobile unit identifications.
11. A method for operating a wireless local area network having at least one RF port, a plurality of mobile units and a cell controller coupled to said RF port, comprising: AP35063 - 072797.0143 operating said RF port to relay signals received from mobile units to said cell controller and to relay signals received from said cell controller to said mobile units; operating said cell controller to control association of said mobile units with said RF port, including sending and receiving association signals between said RF port and said cell controller; operating said cell controller to send messages to and from said mobile unit via said RF ports; and operating said cell controller to perform a network control function.
12. The method of claim 11 wherein said network control function is a layer 3 network control function.
13. The method of claim 12 wherein said layer 3 network control function is a routing function.
14. The method of claim 12 wherein said layer 3 network control function is a Quality of Service function.
15. The method of claim 12 wherein said layer 3 network control function is a packet formation function.
16. The method of claim 12 wherein layer 3 network control function is a filtering function.
17. The method of claim 12 wherein layer 3 network control function is an addressing function.
18. A method for operating a wireless local area network that is provided with RF Ports for communicating with mobile units and at least one cell controller for relaying data communications packets between a wired network and said RF Ports, wherein said cell controller is arranged to perform association and roaming functions for said RF Ports, the method comprising using said cell controller to perform the network functions of a router.
19. A method for operating a wireless local area network that is provided with RF Ports for communicating with mobile units and at least one cell controller for relaying data communications packets between a wired network and said RF Ports, wherein said cell controller is arranged to perform association and roaming functions AP35063 - 072797.0143 for said RF Ports, the method comprising using said cell controller to control the assignment of mobile units to the RF ports.
20. A method for operating a wireless local area network that is provided with RF Ports for communicating with mobile units and at least one cell controller for relaying data communications packets between a wired network and said RF Ports, wherein said cell controller is arranged to perform association and roaming functions for said RF Ports, the method comprising using said cell controller manage bandwidth allocations based on mobile unit identifications.
PCT/US2004/016804 2003-05-28 2004-05-28 Improved wireless network cell controller WO2004107638A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2006533472A JP2007504786A (en) 2003-05-28 2004-05-28 Improved wireless network cell controller
EP04753606A EP1634466A4 (en) 2003-05-28 2004-05-28 Improved wireless network cell controller

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US47375503P 2003-05-28 2003-05-28
US60/473,755 2003-05-28

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WO2004107638A3 WO2004107638A3 (en) 2005-03-10

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EP (1) EP1634466A4 (en)
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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2184937A1 (en) 2005-09-19 2010-05-12 Qualcomm Incorporated Packet routing in a wireless communications environment
US7962142B2 (en) 2003-01-31 2011-06-14 Qualcomm Incorporated Methods and apparatus for the utilization of core based nodes for state transfer
CN102572848A (en) * 2012-01-16 2012-07-11 华为技术有限公司 Wireless local area network and method for conducting communication by utilizing wireless local area network
CN101305565B (en) * 2005-09-19 2012-11-28 高通股份有限公司 Packet routing in a wireless communications environment
US8391256B2 (en) 2000-03-17 2013-03-05 Symbol Technologies, Inc. RF port for multiple wireless local area networks
US8509799B2 (en) 2005-09-19 2013-08-13 Qualcomm Incorporated Provision of QoS treatment based upon multiple requests
US8588777B2 (en) 1998-09-22 2013-11-19 Qualcomm Incorporated Method and apparatus for robust handoff in wireless communication systems
US8615241B2 (en) 2010-04-09 2013-12-24 Qualcomm Incorporated Methods and apparatus for facilitating robust forward handover in long term evolution (LTE) communication systems
US8687610B2 (en) 1998-01-16 2014-04-01 Symbol Technologies, Inc. Infrastructure for wireless LANS
US8830818B2 (en) 2007-06-07 2014-09-09 Qualcomm Incorporated Forward handover under radio link failure
US8886180B2 (en) 2003-01-31 2014-11-11 Qualcomm Incorporated Enhanced techniques for using core based nodes for state transfer
US8983468B2 (en) 2005-12-22 2015-03-17 Qualcomm Incorporated Communications methods and apparatus using physical attachment point identifiers
US8982835B2 (en) 2005-09-19 2015-03-17 Qualcomm Incorporated Provision of a move indication to a resource requester
US9078084B2 (en) 2005-12-22 2015-07-07 Qualcomm Incorporated Method and apparatus for end node assisted neighbor discovery
US9083355B2 (en) 2006-02-24 2015-07-14 Qualcomm Incorporated Method and apparatus for end node assisted neighbor discovery
US9094173B2 (en) 2007-06-25 2015-07-28 Qualcomm Incorporated Recovery from handoff error due to false detection of handoff completion signal at access terminal
US9155008B2 (en) 2007-03-26 2015-10-06 Qualcomm Incorporated Apparatus and method of performing a handoff in a communication network
US9736752B2 (en) 2005-12-22 2017-08-15 Qualcomm Incorporated Communications methods and apparatus using physical attachment point identifiers which support dual communications links

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7173923B2 (en) * 2000-03-17 2007-02-06 Symbol Technologies, Inc. Security in multiple wireless local area networks
EP1634171B1 (en) * 2003-05-28 2007-11-14 Symbol Technologies, Inc. Backup cell controller
US7996894B1 (en) * 2005-02-15 2011-08-09 Sonicwall, Inc. MAC address modification of otherwise locally bridged client devices to provide security
US9210579B2 (en) * 2009-10-14 2015-12-08 Huawei Technologies Co., Ltd. System and method for communicating in a wireless communications system
US9590916B2 (en) * 2013-09-04 2017-03-07 Aruba Networks, Inc. Method and system for dynamically prioritizing user connections on network
US9717088B2 (en) 2014-09-11 2017-07-25 Arizona Board Of Regents On Behalf Of Arizona State University Multi-nodal wireless communication systems and methods

Family Cites Families (94)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5668803A (en) * 1989-06-29 1997-09-16 Symbol Technologies, Inc. Protocol for packet data communication system
US5239673A (en) * 1990-10-29 1993-08-24 International Business Machines Corporation Scheduling methods for efficient frequency reuse in a multi-cell wireless network served by a wired local area network
US5504746A (en) * 1991-10-01 1996-04-02 Norand Corporation Radio frequency local area network
US5461627A (en) * 1991-12-24 1995-10-24 Rypinski; Chandos A. Access protocol for a common channel wireless network
US5502726A (en) * 1992-01-31 1996-03-26 Nellcor Incorporated Serial layered medical network
US5353331A (en) * 1992-03-05 1994-10-04 Bell Atlantic Network Services, Inc. Personal communications service using wireline/wireless integration
GB9223890D0 (en) * 1992-11-13 1993-01-06 Ncr Int Inc Wireless local area network system
GB9226707D0 (en) * 1992-12-22 1993-02-17 Ncr Int Inc Wireless local area network system with mobile station handover
US5459759A (en) * 1993-02-17 1995-10-17 Interdigital Technology Corporation Frequency hopping code division multiple access system and method
US6006090A (en) * 1993-04-28 1999-12-21 Proxim, Inc. Providing roaming capability for mobile computers in a standard network
JPH06350562A (en) * 1993-06-08 1994-12-22 Ricoh Co Ltd Spread spectrum communication system
AU7210894A (en) * 1993-06-25 1995-01-17 Xircom, Inc. Virtual carrier detection for wireless local area network with distributed control
GB9321657D0 (en) * 1993-10-20 1993-12-08 Ncr Int Inc Power management system for a wireless network
US5546397A (en) * 1993-12-20 1996-08-13 Norand Corporation High reliability access point for wireless local area network
US5960344A (en) * 1993-12-20 1999-09-28 Norand Corporation Local area network having multiple channel wireless access
US5457557A (en) * 1994-01-21 1995-10-10 Ortel Corporation Low cost optical fiber RF signal distribution system
CA2176401C (en) * 1994-02-17 2003-07-08 John H. Cafarella A high-data-rate wireless local-area network
US5636220A (en) * 1994-03-01 1997-06-03 Motorola, Inc. Packet delivery method for use in a wireless local area network (LAN)
DE19526586A1 (en) * 1994-07-21 1996-01-25 Mitel Corp Integrated telecommunication system
CA2129197C (en) * 1994-07-29 1999-11-09 Roger Y.M. Cheung Method and apparatus for connecting a wireless lan to a wired lan
US5490139A (en) * 1994-09-28 1996-02-06 International Business Machines Corporation Mobility enabling access point architecture for wireless attachment to source routing networks
DE69427404T2 (en) * 1994-10-26 2001-11-08 Ibm Allocation method and apparatus for reusing network resources in a wireless communication system
JP3349861B2 (en) * 1995-03-17 2002-11-25 富士通株式会社 Wireless LAN system
JP3047767B2 (en) * 1995-03-20 2000-06-05 株式会社日立製作所 Wireless LAN system
US5761619A (en) * 1995-03-23 1998-06-02 Telefoanktiebolaget Lm Ericsson Distributed telecommunications system
US5768531A (en) * 1995-03-27 1998-06-16 Toshiba America Information Systems Apparatus and method for using multiple communication paths in a wireless LAN
US5717737A (en) * 1995-06-01 1998-02-10 Padcom, Inc. Apparatus and method for transparent wireless communication between a remote device and a host system
US5765112A (en) * 1995-06-06 1998-06-09 Flash Comm. Inc. Low cost wide area network for data communication using outbound message specifying inbound message time and frequency
US5734963A (en) * 1995-06-06 1998-03-31 Flash Comm, Inc. Remote initiated messaging apparatus and method in a two way wireless data communications network
US5623495A (en) * 1995-06-15 1997-04-22 Lucent Technologies Inc. Portable base station architecture for an AD-HOC ATM lan
US5737328A (en) * 1995-10-04 1998-04-07 Aironet Wireless Communications, Inc. Network communication system with information rerouting capabilities
US6353599B1 (en) * 1995-10-16 2002-03-05 Nec Corporation Wireless enumeration
US6330231B1 (en) * 1995-10-16 2001-12-11 Nec Corporation Dynamic server allocation for load balancing wireless remote interface processing
US6005884A (en) * 1995-11-06 1999-12-21 Ems Technologies, Inc. Distributed architecture for a wireless data communications system
US5771353A (en) * 1995-11-13 1998-06-23 Motorola Inc. System having virtual session manager used sessionless-oriented protocol to communicate with user device via wireless channel and session-oriented protocol to communicate with host server
US5958006A (en) * 1995-11-13 1999-09-28 Motorola, Inc. Method and apparatus for communicating summarized data
US5944659A (en) * 1995-11-13 1999-08-31 Vitalcom Inc. Architecture for TDMA medical telemetry system
JPH103421A (en) * 1995-11-20 1998-01-06 Matsushita Electric Ind Co Ltd Virtual file management system
US5835696A (en) * 1995-11-22 1998-11-10 Lucent Technologies Inc. Data router backup feature
US6101531A (en) * 1995-12-19 2000-08-08 Motorola, Inc. System for communicating user-selected criteria filter prepared at wireless client to communication server for filtering data transferred from host to said wireless client
US5794153A (en) * 1995-12-26 1998-08-11 Lucent Technologies Inc. Estimating PCS traffic from radio port measurements
US5889816A (en) * 1996-02-02 1999-03-30 Lucent Technologies, Inc. Wireless adapter architecture for mobile computing
US5850526A (en) * 1996-02-07 1998-12-15 Kingston Technology Co. LAN station for determining the destination LAN station is capable of decompressing by comparing destination address to block of addresses assigned by a LAN manufacturer
US5999295A (en) * 1996-03-29 1999-12-07 Compaq Computer Corporation Stackable network modules using infrared communications
US5796729A (en) * 1996-05-09 1998-08-18 Bell Communications Research, Inc. Integrated telecommunication system architecture for wireless and wireline access featuring PACS radio technology
US5907544A (en) * 1996-05-10 1999-05-25 Rypinski; Chandos A. Hub controller architecture and function for a multiple access-point wireless communication network
US5946617A (en) * 1996-06-28 1999-08-31 Telxon Corporation Cellular communication system with remote power source for providing power to access points
US6701361B1 (en) * 1996-08-22 2004-03-02 Intermec Ip Corp. Enhanced mobility and address resolution in a wireless premises based network
US6330244B1 (en) * 1996-09-05 2001-12-11 Jerome Swartz System for digital radio communication between a wireless lan and a PBX
DE19639845C1 (en) * 1996-09-27 1998-04-02 Philips Patentverwaltung Local network with sending and receiving device
US5918181A (en) * 1996-10-15 1999-06-29 Tatung Telecom Corporation Method and apparatus for tracking location of wireless terminals in a nanocellular digital cordless terminal network coupled to a local exchange
US6137797A (en) * 1996-11-27 2000-10-24 International Business Machines Corporation Process definition for source route switching
US5991287A (en) * 1996-12-30 1999-11-23 Lucent Technologies, Inc. System and method for providing seamless handover in a wireless computer network
US5974034A (en) * 1997-01-16 1999-10-26 Gwcom, Inc. System and method for synchronized wide and local area communications utilizing a single frequency
US6272120B1 (en) * 1997-01-28 2001-08-07 Cisco Technology, Inc. Multi-radio bridge
US6154461A (en) * 1997-05-14 2000-11-28 Telxon Corporation Seamless roaming among multiple networks
US5994998A (en) * 1997-05-29 1999-11-30 3Com Corporation Power transfer apparatus for concurrently transmitting data and power over data wires
JP3792013B2 (en) * 1997-08-12 2006-06-28 富士通株式会社 Wireless LAN and in-system transmission / reception device
US6067291A (en) * 1997-09-23 2000-05-23 Lucent Technologies Inc. Wireless local area network with enhanced carrier sense provision
USH1836H (en) * 1997-09-26 2000-02-01 Fletcher; Anthony G. Integrated telecommunications system
US6512754B2 (en) * 1997-10-14 2003-01-28 Lucent Technologies Inc. Point-to-point protocol encapsulation in ethernet frame
US6414950B1 (en) * 1997-10-14 2002-07-02 Lucent Technologies Inc. Sequence delivery of messages
US6400722B1 (en) * 1997-10-14 2002-06-04 Lucent Technologies Inc. Optimum routing system
US6078566A (en) * 1998-04-28 2000-06-20 Genesys Telecommunications Laboratories, Inc. Noise reduction techniques and apparatus for enhancing wireless data network telephony
US6795406B2 (en) * 1999-07-12 2004-09-21 Genesys Telecommunications Laboratories, Inc. Methods and apparatus for enhancing wireless data network telephony, including quality of service monitoring and control
US6259898B1 (en) * 1998-05-05 2001-07-10 Telxon Corporation Multi-communication access point
FI105978B (en) * 1998-05-12 2000-10-31 Nokia Mobile Phones Ltd Method of connecting a wireless data terminal in a data transmission network and a wireless data terminal
US6195705B1 (en) * 1998-06-30 2001-02-27 Cisco Technology, Inc. Mobile IP mobility agent standby protocol
US6590885B1 (en) * 1998-07-10 2003-07-08 Malibu Networks, Inc. IP-flow characterization in a wireless point to multi-point (PTMP) transmission system
US6205495B1 (en) * 1998-07-15 2001-03-20 Gateway, Inc. Wireless interface for standard modems
US6119162A (en) * 1998-09-25 2000-09-12 Actiontec Electronics, Inc. Methods and apparatus for dynamic internet server selection
US6212561B1 (en) * 1998-10-08 2001-04-03 Cisco Technology, Inc. Forced sequential access to specified domains in a computer network
US6600734B1 (en) * 1998-12-17 2003-07-29 Symbol Technologies, Inc. Apparatus for interfacing a wireless local network and a wired voice telecommunications system
CN1350741A (en) * 1998-12-23 2002-05-22 奥普斯威夫网络公司 Wireless local loop system, supporting voice/IP
US6590884B1 (en) * 1999-01-07 2003-07-08 Texas Instruments Incorporated Method and apparatus providing spatial diversity within an indoor network
US6629151B1 (en) * 1999-03-18 2003-09-30 Microsoft Corporation Method and system for querying the dynamic aspects of wireless connection
US6415323B1 (en) * 1999-09-03 2002-07-02 Fastforward Networks Proximity-based redirection system for robust and scalable service-node location in an internetwork
US6717926B1 (en) * 1999-09-13 2004-04-06 Nokia Corporation Apparatus and associated method, by which to transmit beacon signals in a radio communication system
US7024222B2 (en) * 1999-09-21 2006-04-04 Ipr Licensing, Inc. Dual mode unit for short range, high rate and long range, lower rate data communications
DE60041829D1 (en) * 1999-12-08 2009-04-30 Symbol Technologies Inc ARCHITECTURE FOR A FLEXIBLE WIRELESS LAN BASED ON A COMMUNICATION SERVER
WO2001054353A1 (en) * 2000-01-19 2001-07-26 Sony Corporation Radio station and data packet transmitting/receiving method
US7173922B2 (en) * 2000-03-17 2007-02-06 Symbol Technologies, Inc. Multiple wireless local area networks occupying overlapping physical spaces
US7173923B2 (en) * 2000-03-17 2007-02-06 Symbol Technologies, Inc. Security in multiple wireless local area networks
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
US6760859B1 (en) * 2000-05-23 2004-07-06 International Business Machines Corporation Fault tolerant local area network connectivity
US7010715B2 (en) * 2001-01-25 2006-03-07 Marconi Intellectual Property (Ringfence), Inc. Redundant control architecture for a network device
US8019335B2 (en) * 2001-01-29 2011-09-13 Nokia Corporation Identifying neighboring cells in telecommunication network
US6901259B2 (en) * 2001-02-15 2005-05-31 Motorola, Inc. Communication system that provides adjustable communication service availability to subscribers
US6751250B2 (en) * 2001-05-24 2004-06-15 Proxim Corporation High-data-rate frequency-hopping wireless communication system
US6724730B1 (en) * 2002-03-04 2004-04-20 Azimuth Networks, Inc. Test system for simulating a wireless environment and method of using same
US7113498B2 (en) * 2002-06-05 2006-09-26 Broadcom Corporation Virtual switch
US20040022222A1 (en) * 2002-07-31 2004-02-05 Allister Clisham Wireless metropolitan area network system and method
US8619728B2 (en) * 2002-09-17 2013-12-31 Broadcom Corporation Method and system for providing an intelligent switch for bandwidth management in a hybrid wired/wireless local area network
EP1634171B1 (en) * 2003-05-28 2007-11-14 Symbol Technologies, Inc. Backup cell controller

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of EP1634466A4 *

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8687610B2 (en) 1998-01-16 2014-04-01 Symbol Technologies, Inc. Infrastructure for wireless LANS
US8588777B2 (en) 1998-09-22 2013-11-19 Qualcomm Incorporated Method and apparatus for robust handoff in wireless communication systems
US8391256B2 (en) 2000-03-17 2013-03-05 Symbol Technologies, Inc. RF port for multiple wireless local area networks
US7962142B2 (en) 2003-01-31 2011-06-14 Qualcomm Incorporated Methods and apparatus for the utilization of core based nodes for state transfer
US8886180B2 (en) 2003-01-31 2014-11-11 Qualcomm Incorporated Enhanced techniques for using core based nodes for state transfer
US11129062B2 (en) 2004-08-04 2021-09-21 Qualcomm Incorporated Enhanced techniques for using core based nodes for state transfer
CN101305565B (en) * 2005-09-19 2012-11-28 高通股份有限公司 Packet routing in a wireless communications environment
US8509799B2 (en) 2005-09-19 2013-08-13 Qualcomm Incorporated Provision of QoS treatment based upon multiple requests
US9066344B2 (en) 2005-09-19 2015-06-23 Qualcomm Incorporated State synchronization of access routers
US9313784B2 (en) 2005-09-19 2016-04-12 Qualcomm Incorporated State synchronization of access routers
US8982778B2 (en) 2005-09-19 2015-03-17 Qualcomm Incorporated Packet routing in a wireless communications environment
US8982835B2 (en) 2005-09-19 2015-03-17 Qualcomm Incorporated Provision of a move indication to a resource requester
EP2184937A1 (en) 2005-09-19 2010-05-12 Qualcomm Incorporated Packet routing in a wireless communications environment
US8983468B2 (en) 2005-12-22 2015-03-17 Qualcomm Incorporated Communications methods and apparatus using physical attachment point identifiers
US9078084B2 (en) 2005-12-22 2015-07-07 Qualcomm Incorporated Method and apparatus for end node assisted neighbor discovery
US9736752B2 (en) 2005-12-22 2017-08-15 Qualcomm Incorporated Communications methods and apparatus using physical attachment point identifiers which support dual communications links
US9083355B2 (en) 2006-02-24 2015-07-14 Qualcomm Incorporated Method and apparatus for end node assisted neighbor discovery
US9155008B2 (en) 2007-03-26 2015-10-06 Qualcomm Incorporated Apparatus and method of performing a handoff in a communication network
US8830818B2 (en) 2007-06-07 2014-09-09 Qualcomm Incorporated Forward handover under radio link failure
US9094173B2 (en) 2007-06-25 2015-07-28 Qualcomm Incorporated Recovery from handoff error due to false detection of handoff completion signal at access terminal
US8615241B2 (en) 2010-04-09 2013-12-24 Qualcomm Incorporated Methods and apparatus for facilitating robust forward handover in long term evolution (LTE) communication systems
US9131410B2 (en) 2010-04-09 2015-09-08 Qualcomm Incorporated Methods and apparatus for facilitating robust forward handover in long term evolution (LTE) communication systems
EP2615884A1 (en) * 2012-01-16 2013-07-17 Huawei Technologies Co., Ltd. Wireless local area network and method for communicating by using wireless local area network
CN102572848A (en) * 2012-01-16 2012-07-11 华为技术有限公司 Wireless local area network and method for conducting communication by utilizing wireless local area network

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EP1634466A4 (en) 2011-03-16
US20050157690A1 (en) 2005-07-21
CN1833451A (en) 2006-09-13
EP1634466A2 (en) 2006-03-15
WO2004107638A3 (en) 2005-03-10

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