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WO2002089502A3 - Pre-synchronization handoff mechanisms for wireless communication networks - Google Patents

Pre-synchronization handoff mechanisms for wireless communication networks Download PDF

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Publication number
WO2002089502A3
WO2002089502A3 PCT/US2002/014286 US0214286W WO02089502A3 WO 2002089502 A3 WO2002089502 A3 WO 2002089502A3 US 0214286 W US0214286 W US 0214286W WO 02089502 A3 WO02089502 A3 WO 02089502A3
Authority
WO
WIPO (PCT)
Prior art keywords
handoff
cell
synchronization
dropping
wireless communication
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.)
Ceased
Application number
PCT/US2002/014286
Other languages
French (fr)
Other versions
WO2002089502A2 (en
Inventor
Xiaohong Gong
Joseph Ho
Junbi Chen
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.)
Linkair Communications Inc
Original Assignee
Linkair Communications 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 Linkair Communications Inc filed Critical Linkair Communications Inc
Priority to AU2002305404A priority Critical patent/AU2002305404A1/en
Publication of WO2002089502A2 publication Critical patent/WO2002089502A2/en
Publication of WO2002089502A3 publication Critical patent/WO2002089502A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • H04W36/0079—Transmission or use of information for re-establishing the radio link in case of hand-off failure or rejection
    • 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
    • H04B7/2687—Inter base stations synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Handoff is one of the key components in today's cellular networks. Handoff allows the reuse of scarce wireless bandwidth resource from cell to cell, and is critical for the operation of cellular networks. Prior art hard handoff mechanisms have a high connection dropping rate. This invention presents a mechanism for reducing the probability of dropping connections caused by hard-handoff by performing pre-synchronization. In one embodiment, the mobile station first completes synchronization, and optionally resource allocation, with a neighboring cell before dropping the connection in the current cell. This result is shorter interruption during handoff and thus better voice and data quality.
PCT/US2002/014286 2001-05-02 2002-05-02 Pre-synchronization handoff mechanisms for wireless communication networks Ceased WO2002089502A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002305404A AU2002305404A1 (en) 2001-05-02 2002-05-02 Pre-synchronization handoff mechanisms for wireless communication networks

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US28774501P 2001-05-02 2001-05-02
US60/287,745 2001-05-02

Publications (2)

Publication Number Publication Date
WO2002089502A2 WO2002089502A2 (en) 2002-11-07
WO2002089502A3 true WO2002089502A3 (en) 2003-02-27

Family

ID=23104146

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/014286 Ceased WO2002089502A2 (en) 2001-05-02 2002-05-02 Pre-synchronization handoff mechanisms for wireless communication networks

Country Status (2)

Country Link
AU (1) AU2002305404A1 (en)
WO (1) WO2002089502A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10206206B2 (en) 2014-03-04 2019-02-12 Telefonaktiebolaget Lm Ericsson (Publ) Method and first network node for managing a request for connectivity for a service of a wireless device

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100893860B1 (en) * 2004-06-10 2009-04-20 엘지전자 주식회사 Method of performing handover applied to broadband wireless access system and method of resuming communication in case of handover failure
JP4557762B2 (en) * 2005-03-17 2010-10-06 富士通株式会社 Method for measuring communication environment of mobile station and mobile station
CN101248686B (en) 2005-08-23 2012-02-01 日本电气株式会社 Synchronization system and method for mobile station and multiple base stations in uplink radio transmission
EP1858282A1 (en) 2006-05-10 2007-11-21 Nokia Siemens Networks Gmbh & Co. Kg Handover in a wiresess communication system
WO2008055169A2 (en) * 2006-10-31 2008-05-08 Qualcomm Incorporated Inter-enode b handover procedure
EP1940190B1 (en) * 2006-12-29 2013-11-20 Motorola Mobility LLC A cellular wireless communication device and method for managing the receipt of a handover command
US9392504B2 (en) 2007-06-19 2016-07-12 Qualcomm Incorporated Delivery of handover command
US8700043B2 (en) 2007-08-08 2014-04-15 Samsung Electronics Co., Ltd Apparatus and method for connecting radio link in wireless communication system having private network cell

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0474138A2 (en) * 1990-09-05 1992-03-11 Nokia Mobile Phones Ltd. Timing logic for portable telephone in the GSM system
EP0589753A1 (en) * 1992-09-15 1994-03-30 Alcatel Mobile Communication France Method of transmitting, together with a handover command in a cellular system, a timing advance signal to a mobile
US5640679A (en) * 1993-01-03 1997-06-17 Telefonaktiebolaget Lm Ericsson Method and an apparatus for handing off mobile station from a first to a second channel in a mobile communication system
WO1999037037A1 (en) * 1998-01-16 1999-07-22 Qualcomm Incorporated Mobile station assisted timing synchronization in a cdma communication system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0474138A2 (en) * 1990-09-05 1992-03-11 Nokia Mobile Phones Ltd. Timing logic for portable telephone in the GSM system
EP0589753A1 (en) * 1992-09-15 1994-03-30 Alcatel Mobile Communication France Method of transmitting, together with a handover command in a cellular system, a timing advance signal to a mobile
US5640679A (en) * 1993-01-03 1997-06-17 Telefonaktiebolaget Lm Ericsson Method and an apparatus for handing off mobile station from a first to a second channel in a mobile communication system
WO1999037037A1 (en) * 1998-01-16 1999-07-22 Qualcomm Incorporated Mobile station assisted timing synchronization in a cdma communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10206206B2 (en) 2014-03-04 2019-02-12 Telefonaktiebolaget Lm Ericsson (Publ) Method and first network node for managing a request for connectivity for a service of a wireless device

Also Published As

Publication number Publication date
AU2002305404A1 (en) 2002-11-11
WO2002089502A2 (en) 2002-11-07

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