BR9712090A - Método e equipamento para prover diversidade em repasse duro para um sistema cdma. - Google Patents

Método e equipamento para prover diversidade em repasse duro para um sistema cdma.

Info

Publication number
BR9712090A
BR9712090A BR9712090-1A BR9712090A BR9712090A BR 9712090 A BR9712090 A BR 9712090A BR 9712090 A BR9712090 A BR 9712090A BR 9712090 A BR9712090 A BR 9712090A
Authority
BR
Brazil
Prior art keywords
base station
remote unit
communication signal
active communication
antenna
Prior art date
Application number
BR9712090-1A
Other languages
English (en)
Inventor
Edward G Tiedemann
Original Assignee
Qualcomm 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24612837&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR9712090(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of BR9712090A publication Critical patent/BR9712090A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
    • H04B7/0671—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different delays between antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2603—Arrangements for wireless physical layer control
    • H04B7/2606—Arrangements for base station coverage control, e.g. by using relays in tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/16—Deriving transmission power values from another channel
    • 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)
  • Radio Transmission System (AREA)
  • Radio Relay Systems (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

Patente de Invenção: MéTODO E EQUIPAMENTO PARA PROVER DIVERSIDADE EM REPASSE DURO PARA UM SISTEMA CDMA. Em uma rede de comunicações, um usuário da rede se comunica utilizando uma unidade remota (125) com outro usuário (30) através de pelo menos uma estação base (B~ 1a~). A rede de comunicações possui uma primeira estação base (B~ 1a~) possuindo uma primeira área de cobertura e uma segunda estação base (B~ 2a~) possuindo uma segunda área de cobertura. Na situação em que a comunicação não está estabelecida entre a segunda estação base (B~ 2a~) e a unidade remota (125), para prover comunicação entre a unidade remota (125) e a primeira estação base (B~ 1a~) quando a unidade remota (125) está na primeira e simultaneamente na segunda área de cobertura, a primeira estação base (B~ 1a~) produz um primeiro sinal de comunicação ativa destinado à unidade remota (125). A primeira estação base transmite o primeiro sinal de comunicação ativa a partir de uma primeira antena (130). A estação base retarda o primeiro sinal de comunicação ativa para produzir um primeiro sinal de comunicação ativa retardado e o transmite através de uma segunda antena (135) em que a segunda antena (135) está orientada em relação à primeira antena (130) de tal forma que o primeiro sinal de comunicação ativa e o primeiro sinal de comunicação ativa retardado se enfraquecem ou sofrem fading independentemente tal como é percebido pela unidade remota. A primeira estação base (B~ 1a~) pode medir um retardo de ida e volta do primeiro sinal de comunicação ativa de modo a identificar que a unidade remota (125) está localizada dentro da segunda área de cobertura.
BR9712090-1A 1996-05-22 1997-05-22 Método e equipamento para prover diversidade em repasse duro para um sistema cdma. BR9712090A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/651,430 US5926470A (en) 1996-05-22 1996-05-22 Method and apparatus for providing diversity in hard handoff for a CDMA system
PCT/US1997/008671 WO1997044983A2 (en) 1996-05-22 1997-05-22 Method and apparatus for providing diversity in hard handoff for a cdma system

Publications (1)

Publication Number Publication Date
BR9712090A true BR9712090A (pt) 1999-08-31

Family

ID=24612837

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9712090-1A BR9712090A (pt) 1996-05-22 1997-05-22 Método e equipamento para prover diversidade em repasse duro para um sistema cdma.

Country Status (14)

Country Link
US (1) US5926470A (pt)
EP (1) EP0900512B1 (pt)
JP (2) JP4191249B2 (pt)
CN (1) CN1158889C (pt)
AT (1) ATE302535T1 (pt)
AU (1) AU3209197A (pt)
BR (1) BR9712090A (pt)
CA (1) CA2256409C (pt)
DE (1) DE69733997T2 (pt)
HK (1) HK1018874A1 (pt)
IL (1) IL127171A (pt)
TW (1) TW361021B (pt)
WO (1) WO1997044983A2 (pt)
ZA (1) ZA974384B (pt)

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CN1158889C (zh) 2004-07-21
TW361021B (en) 1999-06-11
CN1225788A (zh) 1999-08-11
DE69733997T2 (de) 2006-06-29
EP0900512B1 (en) 2005-08-17
JP4191249B2 (ja) 2008-12-03
WO1997044983A2 (en) 1997-11-27
ZA974384B (en) 1998-08-24
HK1018874A1 (en) 2000-01-07
DE69733997D1 (de) 2005-09-22
JP4643600B2 (ja) 2011-03-02
AU3209197A (en) 1997-12-09
IL127171A0 (en) 1999-09-22
EP0900512A2 (en) 1999-03-10
JP2000511377A (ja) 2000-08-29
WO1997044983A3 (en) 1997-12-24
IL127171A (en) 2003-06-24
CA2256409C (en) 2011-08-02
JP2007195206A (ja) 2007-08-02
ATE302535T1 (de) 2005-09-15
CA2256409A1 (en) 1997-11-27
US5926470A (en) 1999-07-20

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