BRPI0418747A - métodos e aparelho para selecionar entre múltiplas portadoras que utilizam uma única cadeia de recepção sintonizada em uma única portadora - Google Patents

métodos e aparelho para selecionar entre múltiplas portadoras que utilizam uma única cadeia de recepção sintonizada em uma única portadora

Info

Publication number
BRPI0418747A
BRPI0418747A BRPI0418747-4A BRPI0418747A BRPI0418747A BR PI0418747 A BRPI0418747 A BR PI0418747A BR PI0418747 A BRPI0418747 A BR PI0418747A BR PI0418747 A BRPI0418747 A BR PI0418747A
Authority
BR
Brazil
Prior art keywords
carrier
band
signal
methods
selecting
Prior art date
Application number
BRPI0418747-4A
Other languages
English (en)
Inventor
Rajiv Laroia
Junyi Li
Frank A Lane
Original Assignee
Qualcomm Flarion Tech
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 Qualcomm Flarion Tech filed Critical Qualcomm Flarion Tech
Publication of BRPI0418747A publication Critical patent/BRPI0418747A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H04B1/406—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with more than one transmission mode, e.g. analog and digital modes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H04B17/327—Received signal code power [RSCP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Circuits Of Receivers In General (AREA)
  • Radio Transmission System (AREA)
  • Transceivers (AREA)
  • Superheterodyne Receivers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

"MéTODOS E APARELHO PARA SELECIONAR ENTRE MúLTIPLAS PORTADORAS QUE UTILIZAM UMA úNICA CADEIA DE RECEPçãO SINTONIZADA EM UMA úNICA PORTADORA" São descritos receptores que acomodam métodos de seleção de freqüência portadora em sistemas de comunicação sem tio que empregam múltiplas freqüências portadoras. Embora o receptor esteja sintonizado em uma única banda, uma estimativa da qualidade de canal correspondente à portadora atualmente utilizada e uma portadora alternativa é gerada sem comutar entre portadoras. Os transmissores de células e/ou de setores diferentes essencialmente utilizam diferentes freqüências portadoras mas periodicamente transmitem utilizando uma freqüência portadora do setor vizinho. Os receptores de nó móveis utilizam uma única cadeia RF com um filtro RF controlável para receber e processar o sinal dentro de uma primeira banda portadora selecionada que inclui dois componentes, um primeiro componente de sinal identificado com a primeira banda atualmente selecionada e um segundo componente de sinal identificado com uma segunda banda alternativa. Valores indicadores de qualidade separados são obtidos do primeiro e do segundo componentes de sinal, comparados, e é feita a determinação sobre se o filtro RF do receptor deve ser comutado para a segunda banda.
BRPI0418747-4A 2004-04-15 2004-10-15 métodos e aparelho para selecionar entre múltiplas portadoras que utilizam uma única cadeia de recepção sintonizada em uma única portadora BRPI0418747A (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US56290004P 2004-04-15 2004-04-15
US10/872,674 US6990324B2 (en) 2004-04-15 2004-06-21 Methods and apparatus for selecting between multiple carriers using a single receiver chain tuned to a single carrier
PCT/US2004/034129 WO2005109701A1 (en) 2004-04-15 2004-10-15 Methods and apparatus for selecting between multiple carriers using a single receiver chain tuned to a single carrier

Publications (1)

Publication Number Publication Date
BRPI0418747A true BRPI0418747A (pt) 2007-09-11

Family

ID=35096887

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0418747-4A BRPI0418747A (pt) 2004-04-15 2004-10-15 métodos e aparelho para selecionar entre múltiplas portadoras que utilizam uma única cadeia de recepção sintonizada em uma única portadora

Country Status (16)

Country Link
US (2) US6990324B2 (pt)
EP (2) EP1735930B1 (pt)
JP (3) JP2007533253A (pt)
KR (1) KR100883527B1 (pt)
CN (2) CN1998170B (pt)
AU (2) AU2004319484C1 (pt)
BR (1) BRPI0418747A (pt)
CA (1) CA2562680C (pt)
EG (1) EG24346A (pt)
IL (1) IL178605A (pt)
MX (1) MXPA06011856A (pt)
NO (1) NO20065210L (pt)
NZ (1) NZ550515A (pt)
RU (2) RU2369006C2 (pt)
WO (1) WO2005109701A1 (pt)
ZA (1) ZA200608583B (pt)

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KR100883527B1 (ko) 2009-02-13
US6990324B2 (en) 2006-01-24
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