WO2005006570A3 - Communication unit with a handoff - Google Patents

Communication unit with a handoff Download PDF

Info

Publication number
WO2005006570A3
WO2005006570A3 PCT/US2004/019006 US2004019006W WO2005006570A3 WO 2005006570 A3 WO2005006570 A3 WO 2005006570A3 US 2004019006 W US2004019006 W US 2004019006W WO 2005006570 A3 WO2005006570 A3 WO 2005006570A3
Authority
WO
WIPO (PCT)
Prior art keywords
communication unit
local area
wireless local
network
handoff
Prior art date
Application number
PCT/US2004/019006
Other languages
French (fr)
Other versions
WO2005006570A2 (en
Inventor
Uday C Sagi
Jheroen P Dorenbosch
Anand B Alen
Original Assignee
Motorola Inc
Uday C Sagi
Jheroen P Dorenbosch
Anand B Alen
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 Motorola Inc, Uday C Sagi, Jheroen P Dorenbosch, Anand B Alen filed Critical Motorola Inc
Priority to AT04755283T priority Critical patent/ATE525876T1/en
Priority to EP04755283A priority patent/EP1678835B1/en
Priority to CA2529556A priority patent/CA2529556C/en
Priority to JP2006518646A priority patent/JP4607871B2/en
Publication of WO2005006570A2 publication Critical patent/WO2005006570A2/en
Publication of WO2005006570A3 publication Critical patent/WO2005006570A3/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H04L65/1104—Session initiation protocol [SIP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2662—Arrangements for Wireless System Synchronisation
    • H04B7/2671—Arrangements for Wireless Time-Division Multiple Access [TDMA] System Synchronisation
    • H04B7/2678—Time synchronisation
    • 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
    • H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]
    • 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
    • H04W36/34—Reselection control
    • H04W36/36—Reselection control by user or terminal equipment

Abstract

A communication unit (10) includes a mobility agent (225) for providing handoffs between a cellular network and a wireless local area network (11). The communication unit (10) determines if it should switch between the wireless local area network (11) and the cellular network for obtaining service, requests a handoff to the wireless local area network (11) or to the cellular network by sending a SIP message addressed to either a public number (229) or a private number (231) associated with the communication unit (10) upon making the determination. The communication unit (10) accepts a new call from an enterprise server (12) over the determined network. Corresponding methods of providing a hand-off is described.
PCT/US2004/019006 2003-06-30 2004-06-16 Communication unit with a handoff WO2005006570A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT04755283T ATE525876T1 (en) 2003-06-30 2004-06-16 DUAL-MODE COMMUNICATIONS TERMINAL AND CALL SWITCHING METHOD
EP04755283A EP1678835B1 (en) 2003-06-30 2004-06-16 Dual-mode communication device and call handoff method
CA2529556A CA2529556C (en) 2003-06-30 2004-06-16 Communication unit with a handoff
JP2006518646A JP4607871B2 (en) 2003-06-30 2004-06-16 Communication unit for handoff

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/610,277 2003-06-30
US10/610,277 US20040264410A1 (en) 2003-06-30 2003-06-30 Method and apparatus for providing a communication unit with a handoff between networks

Publications (2)

Publication Number Publication Date
WO2005006570A2 WO2005006570A2 (en) 2005-01-20
WO2005006570A3 true WO2005006570A3 (en) 2007-03-01

Family

ID=33541100

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/019006 WO2005006570A2 (en) 2003-06-30 2004-06-16 Communication unit with a handoff

Country Status (7)

Country Link
US (2) US20040264410A1 (en)
EP (1) EP1678835B1 (en)
JP (1) JP4607871B2 (en)
KR (1) KR100755199B1 (en)
AT (1) ATE525876T1 (en)
CA (1) CA2529556C (en)
WO (1) WO2005006570A2 (en)

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KR100755199B1 (en) 2007-09-05
US20040264410A1 (en) 2004-12-30
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US20070217366A1 (en) 2007-09-20
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ATE525876T1 (en) 2011-10-15
CA2529556C (en) 2012-01-24

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