BR9916552A - Método e aparelho para manuseio inter-frequência em sistema de comunicação sem fio - Google Patents

Método e aparelho para manuseio inter-frequência em sistema de comunicação sem fio

Info

Publication number
BR9916552A
BR9916552A BR9916552-0A BR9916552A BR9916552A BR 9916552 A BR9916552 A BR 9916552A BR 9916552 A BR9916552 A BR 9916552A BR 9916552 A BR9916552 A BR 9916552A
Authority
BR
Brazil
Prior art keywords
frequency
new frequency
power received
new
wireless communication
Prior art date
Application number
BR9916552-0A
Other languages
English (en)
Inventor
Wen-Yi Kuo
Martin Howard Meyers
Carl Francis Weaver
Original Assignee
Lucent Technologies 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 Lucent Technologies Inc filed Critical Lucent Technologies Inc
Publication of BR9916552A publication Critical patent/BR9916552A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data

Landscapes

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

Abstract

<B>MéTODO E APARELHO PARA MANUSEIO INTER-FREQuêNCIA EM SISTEMA DE COMUNICAçãO SEM FIO<D> Aparelho e método os quais, em um sistema de comunicação sem fio, melhoram a qualidade das transferências a partir de uma freq³ência de conexão de chamada existente para uma nova freq³ência mediante minimização de transferências entre freq³ências oscilantes entre a freq³ência de conexão de chamada existente e a nova freq³ência, e mediante minimização de sintonização reduntante e desnecessária e busca na nova freq³ência. A presente invenção realiza este aperfeiçoamento mediante adição de valores de comparação de limite específico (ou gatilhos) dentro das mensagens existentes e através de informe de dados mais robustos, a partir da unidade móvel para a estação de base, quando é realizada a sintonização e busca. Particularmente, dois gatilhos comparativos providos pela presente invenção evitam a sintonização e busca desnecessárias na nova freq³ência, deste modo reduzindo degradação de voz e o risco de chamadas interrompidas enquanto em ação de busca piloto na freq³ência atual. Adicionalmente, uma modalidade alternativa da presente invenção compara a potência recebida na nova freq³ência com a potência recebida na freq³ência original. Se a potência recebida na freq³ência nova não exceder a potência recebida na freq³ência original mediante um valor limite de histérese especificado, então uma busca da nova freq³ência é desnecessária e a unidade móvel "re-sintoniza" na freq³ência original.
BR9916552-0A 1998-03-30 1999-03-22 Método e aparelho para manuseio inter-frequência em sistema de comunicação sem fio BR9916552A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/050,535 US6181943B1 (en) 1998-03-30 1998-03-30 Method and apparatus for inter-frequency hand-off in wireless communication systems

Publications (1)

Publication Number Publication Date
BR9916552A true BR9916552A (pt) 2001-10-02

Family

ID=21965809

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9916552-0A BR9916552A (pt) 1998-03-30 1999-03-22 Método e aparelho para manuseio inter-frequência em sistema de comunicação sem fio

Country Status (8)

Country Link
US (1) US6181943B1 (pt)
EP (1) EP0948231B1 (pt)
JP (1) JP3574945B2 (pt)
KR (1) KR100447694B1 (pt)
CN (1) CN1235502A (pt)
BR (1) BR9916552A (pt)
CA (1) CA2264471A1 (pt)
TW (1) TW421936B (pt)

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Also Published As

Publication number Publication date
KR100447694B1 (ko) 2004-09-08
JPH11331912A (ja) 1999-11-30
CA2264471A1 (en) 1999-09-30
JP3574945B2 (ja) 2004-10-06
EP0948231A3 (en) 2000-04-19
EP0948231B1 (en) 2015-09-02
US6181943B1 (en) 2001-01-30
KR19990078387A (ko) 1999-10-25
CN1235502A (zh) 1999-11-17
EP0948231A2 (en) 1999-10-06
TW421936B (en) 2001-02-11

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Legal Events

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B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 4O, 5O, 6O, 7O E 8O ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1913 DE 04/09/2007.

B15K Others concerning applications: alteration of classification

Ipc: H04W 36/30 (2009.01)