WO2005125232A3 - Cellular communications system - Google Patents

Cellular communications system Download PDF

Info

Publication number
WO2005125232A3
WO2005125232A3 PCT/US2005/019829 US2005019829W WO2005125232A3 WO 2005125232 A3 WO2005125232 A3 WO 2005125232A3 US 2005019829 W US2005019829 W US 2005019829W WO 2005125232 A3 WO2005125232 A3 WO 2005125232A3
Authority
WO
WIPO (PCT)
Prior art keywords
frequency band
handovers
signal strength
communications system
cellular communications
Prior art date
Application number
PCT/US2005/019829
Other languages
French (fr)
Other versions
WO2005125232A2 (en
Inventor
Tubagus Rizal
Yat-Lung Kwong
Original Assignee
Motorola Inc
Tubagus Rizal
Yat-Lung Kwong
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, Tubagus Rizal, Yat-Lung Kwong filed Critical Motorola Inc
Priority to EP05791278A priority Critical patent/EP1759540A4/en
Priority to CN2005800160048A priority patent/CN101385363B/en
Publication of WO2005125232A2 publication Critical patent/WO2005125232A2/en
Publication of WO2005125232A3 publication Critical patent/WO2005125232A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point
    • 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
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00837—Determination of triggering parameters for hand-off
    • 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
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • 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
    • H04W36/142—Reselecting a network or an air interface over the same radio air interface technology
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • 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

Abstract

A method, and apparatus, for operating a cellular communications system (1) in which a call is handed over between a first frequency band (9) and a second frequency band (18) according to a predicted signal strength on the second frequency band (18) calculated from a signal strength measured on the first frequency band (9), and in which the call is handed back from the second frequency band (18) to the first frequency band (9) according to a signal strength measured on the second frequency band (18); comprising: counting the number of handovers between the frequency bands that take place in a first period of time; comparing the counted number of handovers with a predetermined threshold level of allowed number of handovers ; and blocking, if the counted number of handovers exceeds the predetermined threshold level of allowed number of handovers, further handovers for a second period of time.
PCT/US2005/019829 2004-06-15 2005-06-06 Cellular communications system WO2005125232A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP05791278A EP1759540A4 (en) 2004-06-15 2005-06-06 Cellular communications system
CN2005800160048A CN101385363B (en) 2004-06-15 2005-06-06 Cellular communications system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0413330A GB2415323B (en) 2004-06-15 2004-06-15 Cellular communications system
GB0413330.2 2004-06-15

Publications (2)

Publication Number Publication Date
WO2005125232A2 WO2005125232A2 (en) 2005-12-29
WO2005125232A3 true WO2005125232A3 (en) 2008-07-31

Family

ID=32749914

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/019829 WO2005125232A2 (en) 2004-06-15 2005-06-06 Cellular communications system

Country Status (4)

Country Link
EP (1) EP1759540A4 (en)
CN (1) CN101385363B (en)
GB (1) GB2415323B (en)
WO (1) WO2005125232A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101047968B (en) * 2006-03-30 2012-06-20 华为技术有限公司 Method and device for controlling user equipment switchover radio evolution network
BRPI1016006B1 (en) * 2009-06-30 2021-03-09 Deutsche Telekom (Uk) Limited method for handling communication between a user's equipment and a radio network controller
WO2014111156A1 (en) * 2013-01-18 2014-07-24 Nokia Solutions And Networks Oy Detection and inhibition of multiple consecutive inter-rat ping-pong handovers
KR20150018135A (en) 2013-08-09 2015-02-23 삼성전자주식회사 Apparatus and method for providing a packet service
CN109495936A (en) * 2018-10-25 2019-03-19 惠州Tcl移动通信有限公司 The switching method and storage device of a kind of mobile device and its communication band

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0660627A2 (en) * 1993-12-22 1995-06-28 Nokia Mobile Phones Ltd. Multi-mode radio telephone
US5778316A (en) * 1993-11-01 1998-07-07 Telefonaktiebolaget Lm Ericsson Method and apparatus for selecting a control channel based on service availability
US6456847B1 (en) * 1998-12-11 2002-09-24 Nokia Mobile Phones Ltd. Timing of handover
EP0966173B1 (en) * 1998-06-17 2002-10-30 Motorola, Inc. Handover determination in a mobile communication system
US20020183030A1 (en) * 2001-03-30 2002-12-05 Morten Damgaard Frequency plan
US6505043B1 (en) * 1999-05-20 2003-01-07 Nec Corporation Mobile communication system capable of selecting relevant base station to be connected to mobile station from base-station-described neighbor list produced based on the number of times of hand-over operations
US6594241B1 (en) * 1999-12-08 2003-07-15 Telefonaktiebolaget Lm Ericsson (Publ) Channel-type switching control
US20050059401A1 (en) * 2000-04-07 2005-03-17 Tao Chen Method of handoff within a telecommunications system containing digital base stations with different spectral capabilities

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5396645A (en) * 1992-04-09 1995-03-07 Comcast Pcs Communications, Inc. System and method for determining whether to assign a macrocell or microcell communication frequency to a mobile communication terminal
GB2301733B (en) * 1995-05-27 1999-09-22 Motorola Inc Method for determining handover in a multicellular communications system
KR19990048321A (en) * 1997-12-09 1999-07-05 윤종용 Hard Handoff Processing Method in Digital Mobile Communication System
US5999814A (en) * 1998-05-05 1999-12-07 Telefonaktiebolaget Lm Ericsson (Publ) Method of detecting and inhibiting mobile station handoff oscillations in a cellular telecommunications network
FI981942A (en) * 1998-09-10 2000-03-11 Nokia Networks Oy Method for channel allocation and arrangement in a two frequency network
JP4604432B2 (en) * 2001-08-29 2011-01-05 日本電気株式会社 MOBILE COMMUNICATION SYSTEM, MOBILE DEVICE USED FOR THE SAME, ITS CONTROL METHOD AND PROGRAM
CN100450238C (en) * 2002-10-18 2009-01-07 株式会社Ntt都科摩 Mobile station, mobile communication system and network selecting method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5778316A (en) * 1993-11-01 1998-07-07 Telefonaktiebolaget Lm Ericsson Method and apparatus for selecting a control channel based on service availability
EP0660627A2 (en) * 1993-12-22 1995-06-28 Nokia Mobile Phones Ltd. Multi-mode radio telephone
EP0966173B1 (en) * 1998-06-17 2002-10-30 Motorola, Inc. Handover determination in a mobile communication system
US6456847B1 (en) * 1998-12-11 2002-09-24 Nokia Mobile Phones Ltd. Timing of handover
US6505043B1 (en) * 1999-05-20 2003-01-07 Nec Corporation Mobile communication system capable of selecting relevant base station to be connected to mobile station from base-station-described neighbor list produced based on the number of times of hand-over operations
US6594241B1 (en) * 1999-12-08 2003-07-15 Telefonaktiebolaget Lm Ericsson (Publ) Channel-type switching control
US20050059401A1 (en) * 2000-04-07 2005-03-17 Tao Chen Method of handoff within a telecommunications system containing digital base stations with different spectral capabilities
US20020183030A1 (en) * 2001-03-30 2002-12-05 Morten Damgaard Frequency plan

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
MIN-HUA ET AL.: "THE MOBILE IP HANDOFF BETWEEN HYBRID NETWORKS", PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, 2002, THE 13TH IEEE INTERNATIONAL SYMPOSIUM, vol. 1, 15 September 2002 (2002-09-15) - 18 September 2002 (2002-09-18), pages 265 - 269, XP010614228 *
RANSOM: "HANDOFF CONSIDERATIONS IN MICROCELLULAR SYSTEMS PLANNING", PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, 1995. PIMRC'95. MERGING ONTO THE INFORMATION SUPERHIGHWAY. SIXTH IEEE INTERNATIONAL SYMPOSIUM, vol. 2, 27 September 1995 (1995-09-27) - 29 September 1995 (1995-09-29), pages 804 - 808, XP010150894 *

Also Published As

Publication number Publication date
CN101385363A (en) 2009-03-11
CN101385363B (en) 2011-01-05
WO2005125232A2 (en) 2005-12-29
GB0413330D0 (en) 2004-07-21
GB2415323A (en) 2005-12-21
GB2415323B (en) 2006-06-28
EP1759540A4 (en) 2011-07-27
EP1759540A2 (en) 2007-03-07

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