WO2007074453A3 - A method of secure wlan communication - Google Patents

A method of secure wlan communication Download PDF

Info

Publication number
WO2007074453A3
WO2007074453A3 PCT/IL2006/001491 IL2006001491W WO2007074453A3 WO 2007074453 A3 WO2007074453 A3 WO 2007074453A3 IL 2006001491 W IL2006001491 W IL 2006001491W WO 2007074453 A3 WO2007074453 A3 WO 2007074453A3
Authority
WO
WIPO (PCT)
Prior art keywords
stations
precoding matrix
demonstrative embodiments
wlan communication
beamforming vectors
Prior art date
Application number
PCT/IL2006/001491
Other languages
French (fr)
Other versions
WO2007074453A2 (en
Inventor
Gilad Rozen
Nir Shapira
Original Assignee
Celeno Comm Ltd
Gilad Rozen
Nir Shapira
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
Priority claimed from US11/319,659 external-priority patent/US7672400B2/en
Priority claimed from US11/319,526 external-priority patent/US7656965B2/en
Priority claimed from US11/386,879 external-priority patent/US7751353B2/en
Application filed by Celeno Comm Ltd, Gilad Rozen, Nir Shapira filed Critical Celeno Comm Ltd
Publication of WO2007074453A2 publication Critical patent/WO2007074453A2/en
Publication of WO2007074453A3 publication Critical patent/WO2007074453A3/en

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
    • H04B7/0615—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 weighted versions of same signal
    • H04B7/0617—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 weighted versions of same signal for beam forming
    • 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
    • H04L25/0222—Estimation of channel variability, e.g. coherence bandwidth, coherence time, fading frequency
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03414—Multicarrier
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03426—Arrangements for removing intersymbol interference characterised by the type of transmission transmission using multiple-input and multiple-output channels
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03777—Arrangements for removing intersymbol interference characterised by the signalling
    • H04L2025/03802—Signalling on the reverse channel
    • 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
    • H04L25/0204—Channel estimation of multiple channels
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03343—Arrangements at the transmitter end
    • 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
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • H04W52/346—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading distributing total power among users or channels
    • 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
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Landscapes

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

Abstract

Some demonstrative embodiments of the invention include a method device and/or system of secure communication in a wireless network using a spatial division multiple access transmission scheme. The method, according to some demonstrative embodiments may include generating a set of N spatial channels to be transmitted, using a set of N respective antennas, to a set of K destination stations, by applying at least one precoding matrix to a set of inputs including K transmissions intended to the K destination stations, respectively, and one or more dither sequences, wherein the precoding matrix includes K beamforming vectors based on channel state information of the K stations, respectively, and one or more additional vectors orthogonal to the beamforming vectors. Other embodiments are described and claimed.
PCT/IL2006/001491 2005-12-29 2006-12-27 A method of secure wlan communication WO2007074453A2 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US11/319,659 US7672400B2 (en) 2005-12-29 2005-12-29 Method of secure WLAN communication
US11/319,526 US7656965B2 (en) 2005-12-29 2005-12-29 Method of secure WLAN communication
US11/319,526 2005-12-29
US11/319,659 2005-12-29
US11/386,879 2006-03-23
US11/386,879 US7751353B2 (en) 2005-12-29 2006-03-23 Device, system and method of securing wireless communication

Publications (2)

Publication Number Publication Date
WO2007074453A2 WO2007074453A2 (en) 2007-07-05
WO2007074453A3 true WO2007074453A3 (en) 2009-04-09

Family

ID=38218381

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2006/001491 WO2007074453A2 (en) 2005-12-29 2006-12-27 A method of secure wlan communication

Country Status (1)

Country Link
WO (1) WO2007074453A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4770939B2 (en) 2009-02-13 2011-09-14 ソニー株式会社 COMMUNICATION DEVICE, COMMUNICATION CONTROL METHOD, AND COMMUNICATION SYSTEM
US8923219B2 (en) * 2010-02-17 2014-12-30 Qualcomm Incorporated Method and apparatus for supporting adaptive channel state information feedback rate in multi-user communication systems

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030128658A1 (en) * 2002-01-08 2003-07-10 Walton Jay Rod Resource allocation for MIMO-OFDM communication systems
US20060030364A1 (en) * 2004-08-06 2006-02-09 Interdigital Technology Corporation Method and apparatus to improve channel quality for use in wireless communications systems with multiple-input multiple-output (MIMO) antennas
US20060104379A1 (en) * 2004-11-15 2006-05-18 Qinghua Li Technique to increase a code rate in a MIMO system using virtual channels

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030128658A1 (en) * 2002-01-08 2003-07-10 Walton Jay Rod Resource allocation for MIMO-OFDM communication systems
US20060039312A1 (en) * 2002-01-08 2006-02-23 Walton Jay R Resource allocation for MIMO-OFDM communication systems
US20060030364A1 (en) * 2004-08-06 2006-02-09 Interdigital Technology Corporation Method and apparatus to improve channel quality for use in wireless communications systems with multiple-input multiple-output (MIMO) antennas
US20060104379A1 (en) * 2004-11-15 2006-05-18 Qinghua Li Technique to increase a code rate in a MIMO system using virtual channels

Also Published As

Publication number Publication date
WO2007074453A2 (en) 2007-07-05

Similar Documents

Publication Publication Date Title
MY153247A (en) Method and arrangement in a wireless communications system
WO2009047739A3 (en) Method and system for managing precoding in a multi-user wireless communications system
WO2008118067A3 (en) Preparation phase for switching between su-mimo and mu-mimo
TW200718065A (en) Method and apparatus for providing antenna diversity in a wireless communication system
WO2007139305A3 (en) Phase shift based precoding method and transceiver for supporting the same
WO2020072961A3 (en) Multi-user preamble format for a wireless local area network
TW201613322A (en) Control signaling in wireless communications
TWI316339B (en) Apparatus and method for transmitting/receiving data in a mobile communication system using multiple antennas
MY162402A (en) Beamforming of control information in a wireless communication system
TW200709630A (en) A method of providing a service on a downlink shared channel
WO2012027060A3 (en) Communication station and method for efficiently providing channel feedback for mimo communications
WO2008104907A3 (en) Method and apparatus for selecting pre-coding vectors
ATE338388T1 (en) WIRELESS COMMUNICATION USING MULTIPLE TRANSMIT AND RECEIVE ANTENNA ARRANGEMENT
WO2009157705A3 (en) Inter-cell interference avoidance for downlink transmission
JP5478780B2 (en) MIMO system having multiple service antennas for data transmission and reception and method thereof
EP2660991A3 (en) Wireless communication apparatus, wireless communication system and wireless communication method
WO2008035915A3 (en) A method of transmitting using phase shift-based precoding and a device for implementing the same in a wireless communication system
WO2006029050A3 (en) Spatial spreading with space-time and space-frequency transmit diversity schemes for a wireless communication system
WO2011096646A3 (en) Method and apparatus for transmitting downlink reference signal in wireless communication system supporting multiple antennas
WO2010019445A3 (en) Method and apparatus for supporting distributed mimo in a wireless communication system
WO2011005048A3 (en) Mobile station, base station, and operation method of mobile station
WO2005060144A8 (en) Spatial spreading in a multi-antenna communication system
WO2008133582A3 (en) Method and arrangement for adapting a multi-antenna transmission
WO2009136736A3 (en) Method for transmitting and receiving data in a cooperative multiple-input multiple-output mobile communication system
UA91880C2 (en) Precoding for planning for wireless communication systems, which depends on segments

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06821672

Country of ref document: EP

Kind code of ref document: A2