WO2009012446A3 - Access point with simultaneous downlink transmission of independent data for multiple client stations - Google Patents

Access point with simultaneous downlink transmission of independent data for multiple client stations Download PDF

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Publication number
WO2009012446A3
WO2009012446A3 PCT/US2008/070466 US2008070466W WO2009012446A3 WO 2009012446 A3 WO2009012446 A3 WO 2009012446A3 US 2008070466 W US2008070466 W US 2008070466W WO 2009012446 A3 WO2009012446 A3 WO 2009012446A3
Authority
WO
WIPO (PCT)
Prior art keywords
data streams
downlink transmission
independent data
access point
multiple client
Prior art date
Application number
PCT/US2008/070466
Other languages
French (fr)
Other versions
WO2009012446A2 (en
Inventor
Rohit U Nabar
Hongyuan Zhang
Hui-Ling Lou
Original Assignee
Marvell World Trade Ltd
Rohit U Nabar
Hongyuan Zhang
Hui-Ling Lou
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 Marvell World Trade Ltd, Rohit U Nabar, Hongyuan Zhang, Hui-Ling Lou filed Critical Marvell World Trade Ltd
Priority to EP13000642.2A priority Critical patent/EP2592766B1/en
Priority to JP2010517184A priority patent/JP5350380B2/en
Priority to CN2008800249801A priority patent/CN101755391B/en
Priority to EP08782051.0A priority patent/EP2171879B1/en
Publication of WO2009012446A2 publication Critical patent/WO2009012446A2/en
Publication of WO2009012446A3 publication Critical patent/WO2009012446A3/en

Links

Classifications

    • 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
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • 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
    • H04B7/0413—MIMO systems
    • H04B7/0452—Multi-user MIMO systems
    • 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
    • H04B7/0697—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 spatial multiplexing
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0215—Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/04—Scheduled or contention-free access
    • H04W74/06—Scheduled or contention-free access using polling

Abstract

A wireless network device comprises R modulation modules that receive R independent data streams, that modulate the R independent data streams, and that apply a multiplexing matrix to generate M modulated and multiplexed data streams, respectively, where R and M are integers greater than one. M summing modules sum portions of each of the M modulated and multiplexed data streams to generate M transmit data streams. M transmitters simultaneously transmit the M transmit data streams during a simultaneous downlink transmission (SDT) period.
PCT/US2008/070466 2007-07-18 2008-07-18 Access point with simultaneous downlink transmission of independent data for multiple client stations WO2009012446A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP13000642.2A EP2592766B1 (en) 2007-07-18 2008-07-18 Access point with simultaneous downlink transmission of independent data for multiple client stations
JP2010517184A JP5350380B2 (en) 2007-07-18 2008-07-18 Access point for simultaneous downlink transmission of independent data to multiple client stations
CN2008800249801A CN101755391B (en) 2007-07-18 2008-07-18 Access point with simultaneous downlink transmission of independent data for multiple client stations
EP08782051.0A EP2171879B1 (en) 2007-07-18 2008-07-18 Access point with simultaneous downlink transmission of independent data for multiple client stations

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US95042907P 2007-07-18 2007-07-18
US60/950,429 2007-07-18
US5760908P 2008-05-30 2008-05-30
US61/057,609 2008-05-30

Publications (2)

Publication Number Publication Date
WO2009012446A2 WO2009012446A2 (en) 2009-01-22
WO2009012446A3 true WO2009012446A3 (en) 2009-03-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/070466 WO2009012446A2 (en) 2007-07-18 2008-07-18 Access point with simultaneous downlink transmission of independent data for multiple client stations

Country Status (5)

Country Link
US (4) US8144647B2 (en)
EP (2) EP2171879B1 (en)
JP (3) JP5350380B2 (en)
CN (1) CN101755391B (en)
WO (1) WO2009012446A2 (en)

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