EP1759540A4 - Cellular communications system - Google Patents

Cellular communications system

Info

Publication number
EP1759540A4
EP1759540A4 EP05791278A EP05791278A EP1759540A4 EP 1759540 A4 EP1759540 A4 EP 1759540A4 EP 05791278 A EP05791278 A EP 05791278A EP 05791278 A EP05791278 A EP 05791278A EP 1759540 A4 EP1759540 A4 EP 1759540A4
Authority
EP
European Patent Office
Prior art keywords
frequency
handovers
mhz
quality
hand over
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.)
Withdrawn
Application number
EP05791278A
Other languages
German (de)
French (fr)
Other versions
EP1759540A2 (en
Inventor
Tubagus Rizal
Yat-Lung Kwong
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.)
Motorola Mobility LLC
Original Assignee
Motorola Mobility LLC
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 Mobility LLC filed Critical Motorola Mobility LLC
Publication of EP1759540A2 publication Critical patent/EP1759540A2/en
Publication of EP1759540A4 publication Critical patent/EP1759540A4/en
Withdrawn legal-status Critical Current

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

Landscapes

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

Abstract

Within a telecommunication cell there are two frequency bands available for use, 900 MHz and 1800 MHz, of which a mobile user is assigned to. If it appears that the quality of the other frequency is better, then the system can hand over the mobile user to the other frequency, known as intra cell hand over. However, if the quality is not actually better, this can result in a user being passed back and fore between the frequencies repeatedly when it would be more beneficial to remain on a single frequency (known as ping pong handover). This reduces power efficiency and increases system resources. This is overcome by counting the number of handovers within a certain time. If this number exceeds a predetermined threshold, then no handovers are allowed to take place for a second predetermined period of time.
EP05791278A 2004-06-15 2005-06-06 Cellular communications system Withdrawn EP1759540A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0413330A GB2415323B (en) 2004-06-15 2004-06-15 Cellular communications system
PCT/US2005/019829 WO2005125232A2 (en) 2004-06-15 2005-06-06 Cellular communications system

Publications (2)

Publication Number Publication Date
EP1759540A2 EP1759540A2 (en) 2007-03-07
EP1759540A4 true EP1759540A4 (en) 2011-07-27

Family

ID=32749914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05791278A Withdrawn EP1759540A4 (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
WO2011000475A1 (en) * 2009-06-30 2011-01-06 T-Mobile International Uk Limited Method for handling communication between a user equipment and a radio network controller and program for controlling 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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999057933A1 (en) * 1998-05-05 1999-11-11 Telefonaktiebolaget Lm Ericsson (Publ) Method of detecting and inhibiting mobile station handoff oscillations in a cellular telecommunications network
WO2000016578A1 (en) * 1998-09-10 2000-03-23 Nokia Networks Oy Method and system for channel allocation in dual band network

Family Cites Families (13)

* 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
US5603081A (en) * 1993-11-01 1997-02-11 Telefonaktiebolaget Lm Ericsson Method for communicating in a wireless communication system
GB2285198B (en) * 1993-12-22 1998-03-04 Nokia Mobile Phones Ltd Multi-mode radio telephone
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
GB2338624A (en) * 1998-06-17 1999-12-22 Motorola Inc Handover determination in a mobile communications system
FI107773B (en) * 1998-12-11 2001-09-28 Nokia Mobile Phones Ltd Set handover timing
JP3344472B2 (en) * 1999-05-20 2002-11-11 日本電気株式会社 Mobile communication method
US6594241B1 (en) * 1999-12-08 2003-07-15 Telefonaktiebolaget Lm Ericsson (Publ) Channel-type switching control
US6535739B1 (en) * 2000-04-07 2003-03-18 Qualcomm Incorporated Method of handoff within a telecommunications system containing digital base stations with different spectral capabilities
US6671500B2 (en) * 2001-03-30 2003-12-30 Skyworks Solutions, Inc. Frequency plan
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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999057933A1 (en) * 1998-05-05 1999-11-11 Telefonaktiebolaget Lm Ericsson (Publ) Method of detecting and inhibiting mobile station handoff oscillations in a cellular telecommunications network
WO2000016578A1 (en) * 1998-09-10 2000-03-23 Nokia Networks Oy Method and system for channel allocation in dual band network

Also Published As

Publication number Publication date
GB2415323B (en) 2006-06-28
GB0413330D0 (en) 2004-07-21
WO2005125232A3 (en) 2008-07-31
EP1759540A2 (en) 2007-03-07
CN101385363A (en) 2009-03-11
GB2415323A (en) 2005-12-21
WO2005125232A2 (en) 2005-12-29
CN101385363B (en) 2011-01-05

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