GB2415323B - Cellular communications system - Google Patents

Cellular communications system

Info

Publication number
GB2415323B
GB2415323B GB0413330A GB0413330A GB2415323B GB 2415323 B GB2415323 B GB 2415323B GB 0413330 A GB0413330 A GB 0413330A GB 0413330 A GB0413330 A GB 0413330A GB 2415323 B GB2415323 B GB 2415323B
Authority
GB
United Kingdom
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.)
Expired - Fee Related
Application number
GB0413330A
Other versions
GB2415323A (en
GB0413330D0 (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 Solutions Inc
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Priority to GB0413330A priority Critical patent/GB2415323B/en
Publication of GB0413330D0 publication Critical patent/GB0413330D0/en
Priority to CN2005800160048A priority patent/CN101385363B/en
Priority to EP05791278A priority patent/EP1759540A4/en
Priority to PCT/US2005/019829 priority patent/WO2005125232A2/en
Publication of GB2415323A publication Critical patent/GB2415323A/en
Application granted granted Critical
Publication of GB2415323B publication Critical patent/GB2415323B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04Q7/3851—
    • 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.
GB0413330A 2004-06-15 2004-06-15 Cellular communications system Expired - Fee Related GB2415323B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB0413330A GB2415323B (en) 2004-06-15 2004-06-15 Cellular communications system
CN2005800160048A CN101385363B (en) 2004-06-15 2005-06-06 Cellular communications system
EP05791278A EP1759540A4 (en) 2004-06-15 2005-06-06 Cellular communications system
PCT/US2005/019829 WO2005125232A2 (en) 2004-06-15 2005-06-06 Cellular communications system

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
GB0413330D0 GB0413330D0 (en) 2004-07-21
GB2415323A GB2415323A (en) 2005-12-21
GB2415323B true GB2415323B (en) 2006-06-28

Family

ID=32749914

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0413330A Expired - Fee Related GB2415323B (en) 2004-06-15 2004-06-15 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
CA2766973C (en) * 2009-06-30 2014-02-11 Deutsche Telekom (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
GB2301733A (en) * 1995-05-27 1996-12-11 Motorola Inc Method for determining handoff in an environment having macrocells and microcells
GB2381420A (en) * 2001-08-29 2003-04-30 Nec Corp Mobile communication system, mobile station, control method and recording medium

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
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
GB2338624A (en) * 1998-06-17 1999-12-22 Motorola Inc Handover determination in a mobile communications system
FI981942A (en) * 1998-09-10 2000-03-11 Nokia Networks Oy Method for channel allocation and arrangement in a two frequency network
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
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
GB2301733A (en) * 1995-05-27 1996-12-11 Motorola Inc Method for determining handoff in an environment having macrocells and microcells
GB2381420A (en) * 2001-08-29 2003-04-30 Nec Corp Mobile communication system, mobile station, control method and recording medium

Also Published As

Publication number Publication date
WO2005125232A3 (en) 2008-07-31
EP1759540A4 (en) 2011-07-27
WO2005125232A2 (en) 2005-12-29
GB2415323A (en) 2005-12-21
EP1759540A2 (en) 2007-03-07
GB0413330D0 (en) 2004-07-21
CN101385363B (en) 2011-01-05
CN101385363A (en) 2009-03-11

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20110127 AND 20110202

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20150615