WO2002054820A3 - Automatic seamless vertical roaming between wireless local area networks and wireless wide area networks - Google Patents

Automatic seamless vertical roaming between wireless local area networks and wireless wide area networks Download PDF

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Publication number
WO2002054820A3
WO2002054820A3 PCT/US2001/045874 US0145874W WO02054820A3 WO 2002054820 A3 WO2002054820 A3 WO 2002054820A3 US 0145874 W US0145874 W US 0145874W WO 02054820 A3 WO02054820 A3 WO 02054820A3
Authority
WO
WIPO (PCT)
Prior art keywords
wwan
wlan
radio
call
egc
Prior art date
Application number
PCT/US2001/045874
Other languages
French (fr)
Other versions
WO2002054820A2 (en
Inventor
Raj Bridgelall
Original Assignee
Symbol Technologies Inc
Raj Bridgelall
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, Raj Bridgelall filed Critical Symbol Technologies Inc
Priority to AT01984968T priority Critical patent/ATE456272T1/en
Priority to CN018055982A priority patent/CN1606891B/en
Priority to JP2002555577A priority patent/JP2004517574A/en
Priority to BRPI0108933A priority patent/BRPI0108933B1/en
Priority to DE60141162T priority patent/DE60141162D1/en
Priority to AU2002233965A priority patent/AU2002233965B2/en
Priority to EP01984968A priority patent/EP1346597B1/en
Priority to CA2398185A priority patent/CA2398185C/en
Publication of WO2002054820A2 publication Critical patent/WO2002054820A2/en
Publication of WO2002054820A3 publication Critical patent/WO2002054820A3/en

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
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/04—Reselecting a cell layer in multi-layered cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16—Gateway arrangements

Abstract

A Mobile Station (MS) is able to vertically roam in either direction between two different network, i.e. WWAN and WLAN. The MS is equipped with a dual mode Radio for WWAN and WLAN transmissions. The WLAN Radio is linked to a WLAN Enterprise Gateway Controller (EGC) via a first air link and the WWAN Radio is linked to a WWAN Base Transceiver Station (BTS) via a second air link. The EGC is connected to a Mobile Switching Center (MSC) which is in turn connected to the BTS. An outgoing VoIP call from the WLAN Radio to a remote party on the WWAN will transition or seamlessly switch over to a WWAN connection when the MS detects packet error rates, frequent scale back or consistent signal degradation. Upon such conditions, the WLAN Radio requests the EGC to request an Explicit Call Transfer via the MSC to the MS integrated WWAN Radio portion which automatically accepts the call based on referenced information stored in the user's subscriber identification module (SIM). Once the WWAN Radio is confirmed connected to the remote party on the WWAN, the WLAN Radio drops the WLAN connection. An incoming call between the MS and a remote user via the WWAN will transition to the WLAN Radio when the MS enters WLAN coverage. The MS issues an ECT to the WLAN. After user verification by the WLAN Radio and the EGC signals acceptance of the call, the WWAN Radio connection is dropped and the call is now established between the WLAN Radio and the remote party on the WWAN.
PCT/US2001/045874 2000-12-28 2001-12-27 Automatic seamless vertical roaming between wireless local area networks and wireless wide area networks WO2002054820A2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
AT01984968T ATE456272T1 (en) 2000-12-28 2001-12-27 AUTOMATIC AND SEAMLESS VERTICAL ROAMING BETWEEN LOCAL WIRELESS NETWORKS AND WIDE AREA WIRELESS NETWORKS
CN018055982A CN1606891B (en) 2000-12-28 2001-12-27 Automatic seamless vertical roaming method and system between WLANs and WWANs
JP2002555577A JP2004517574A (en) 2000-12-28 2001-12-27 Automatic seamless vertical roaming between WLAN and WWAN
BRPI0108933A BRPI0108933B1 (en) 2000-12-28 2001-12-27 uninterrupted automatic vertical roaming method
DE60141162T DE60141162D1 (en) 2000-12-28 2001-12-27 AUTOMATIC AND TRANSITIONLESS VERTICAL ROAMING BETWEEN LOCAL WIRELESS NETWORKS AND ROAD TRANSPORT NETWORKS
AU2002233965A AU2002233965B2 (en) 2000-12-28 2001-12-27 Automatic seamless vertical roaming between wireless local area networks and wireless wide area networks
EP01984968A EP1346597B1 (en) 2000-12-28 2001-12-27 Automatic seamless vertical roaming between wlans and wwans
CA2398185A CA2398185C (en) 2000-12-28 2001-12-27 Automatic seamless vertical roaming between wlans wwans

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US25866900P 2000-12-28 2000-12-28
US60/258,669 2000-12-28
US27702001P 2001-03-19 2001-03-19
US60/277,020 2001-03-19
US10/014,448 US7039027B2 (en) 2000-12-28 2001-12-14 Automatic and seamless vertical roaming between wireless local area network (WLAN) and wireless wide area network (WWAN) while maintaining an active voice or streaming data connection: systems, methods and program products
US10/014,448 2001-12-14

Publications (2)

Publication Number Publication Date
WO2002054820A2 WO2002054820A2 (en) 2002-07-11
WO2002054820A3 true WO2002054820A3 (en) 2003-03-13

Family

ID=27360105

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/045874 WO2002054820A2 (en) 2000-12-28 2001-12-27 Automatic seamless vertical roaming between wireless local area networks and wireless wide area networks

Country Status (11)

Country Link
US (2) US7039027B2 (en)
EP (1) EP1346597B1 (en)
JP (1) JP2004517574A (en)
KR (1) KR100880751B1 (en)
CN (1) CN1606891B (en)
AT (1) ATE456272T1 (en)
AU (1) AU2002233965B2 (en)
BR (1) BRPI0108933B1 (en)
CA (1) CA2398185C (en)
DE (1) DE60141162D1 (en)
WO (1) WO2002054820A2 (en)

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* Cited by examiner, † Cited by third party
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US9144111B2 (en) 2005-08-01 2015-09-22 Ubiquisys Limited Self-configuring cellular basestation

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