BR0309957A - Método para verificar confiabilidade de link de comunicação - Google Patents

Método para verificar confiabilidade de link de comunicação

Info

Publication number
BR0309957A
BR0309957A BR0309957-1A BR0309957A BR0309957A BR 0309957 A BR0309957 A BR 0309957A BR 0309957 A BR0309957 A BR 0309957A BR 0309957 A BR0309957 A BR 0309957A
Authority
BR
Brazil
Prior art keywords
packet data
terminal
reliability
communication link
snr
Prior art date
Application number
BR0309957-1A
Other languages
English (en)
Inventor
Durga P Malladi
Alkinoos Hector Vayanos
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
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of BR0309957A publication Critical patent/BR0309957A/pt

Links

Classifications

    • 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
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
    • H04W52/286—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission during data packet transmission, e.g. high speed packet access [HSPA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1438—Negotiation of transmission parameters prior to communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0025—Transmission of mode-switching indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1835—Buffer management
    • H04L1/1845—Combining techniques, e.g. code combining

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Communication Control (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
  • Transmitters (AREA)

Abstract

"MéTODO PARA VERIFICAR A CONFIABILIDADE DE UM LINK DE COMUNICAçãO". Trata-se de técnicas para atenuar os efeitos do desequilíbrio de link no uplink entre um terminal (ou UE) e várias estações base (ou Nó de Bs) . Sob um aspecto, a estação base servidora (isto é, a designada para transmitir dados de pacote ao terminal) monitora a SNR de uplink recebida para cada terminal designado para receber a transmissão dos dados de pacote. A estação base servidora determina em seguida, com base na SNR de uplink recebida e em um limite de SNR, se ou não o desequilíbrio de link existe potencialmente para cada terminal. Sob outro aspecto, se for determinado que o desequilíbrio de link existe potencialmente, então, é efetuado um estabelecimento de comunicação tridirecional para se verificar a confiabilidade do mecanismo de realimentação utilizado na transmissão de dados de pacote. Em resposta, medidas apropriadas podem ser tomadas com base no resultado da verificação.
BR0309957-1A 2002-05-13 2003-05-13 Método para verificar confiabilidade de link de comunicação BR0309957A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/145,430 US7352722B2 (en) 2002-05-13 2002-05-13 Mitigation of link imbalance in a wireless communication system
PCT/US2003/015198 WO2003096598A1 (en) 2002-05-13 2003-05-13 Method to check communication link reliability

Publications (1)

Publication Number Publication Date
BR0309957A true BR0309957A (pt) 2005-04-05

Family

ID=29400445

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0309957-1A BR0309957A (pt) 2002-05-13 2003-05-13 Método para verificar confiabilidade de link de comunicação

Country Status (12)

Country Link
US (2) US7352722B2 (pt)
EP (1) EP1504556B1 (pt)
JP (1) JP4422608B2 (pt)
KR (2) KR100969833B1 (pt)
CN (1) CN100590999C (pt)
AT (1) ATE450093T1 (pt)
AU (1) AU2003229082A1 (pt)
BR (1) BR0309957A (pt)
DE (1) DE60330234D1 (pt)
HK (1) HK1081354A1 (pt)
TW (1) TWI279147B (pt)
WO (1) WO2003096598A1 (pt)

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US8014363B2 (en) 2011-09-06
ATE450093T1 (de) 2009-12-15
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WO2003096598A1 (en) 2003-11-20
US20030210668A1 (en) 2003-11-13
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AU2003229082A1 (en) 2003-11-11
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US7352722B2 (en) 2008-04-01
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