WO2011136473A3 - Method for avoiding interference in wireless communication system and apparatus for the same - Google Patents

Method for avoiding interference in wireless communication system and apparatus for the same Download PDF

Info

Publication number
WO2011136473A3
WO2011136473A3 PCT/KR2011/001995 KR2011001995W WO2011136473A3 WO 2011136473 A3 WO2011136473 A3 WO 2011136473A3 KR 2011001995 W KR2011001995 W KR 2011001995W WO 2011136473 A3 WO2011136473 A3 WO 2011136473A3
Authority
WO
WIPO (PCT)
Prior art keywords
sta
interference
transmission
wireless communication
communication system
Prior art date
Application number
PCT/KR2011/001995
Other languages
French (fr)
Other versions
WO2011136473A2 (en
Inventor
Dae Won Lee
In Kyu Lee
Kyoung Jae Lee
Yong Ho Seok
Original Assignee
Lg Electronics Inc.
Korea University Research And Business Foundation
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 KR1020110000114A external-priority patent/KR20110119520A/en
Application filed by Lg Electronics Inc., Korea University Research And Business Foundation filed Critical Lg Electronics Inc.
Publication of WO2011136473A2 publication Critical patent/WO2011136473A2/en
Publication of WO2011136473A3 publication Critical patent/WO2011136473A3/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
    • H04B7/0619—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 using feedback from receiving side
    • 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
    • H04B7/0426—Power distribution
    • H04B7/0434—Power distribution using multiple eigenmodes
    • H04B7/0439—Power distribution using multiple eigenmodes utilizing channel inversion
    • 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
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
    • H04B7/0465—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account taking power constraints at power amplifier or emission constraints, e.g. constant modulus, into account

Landscapes

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

Abstract

Disclosed are a method for avoiding interference in a wireless communication system and an apparatus supporting the same. The method for avoiding interference by an access point (AP) in a wireless local area network (WLAN) system includes: acquiring first effective channel information between the AP and a first station (STA) targeted for multi user-multiple input multiple output (MU-MIMO) transmission; acquiring second effective channel information between the AP and a second STA that receives data from a third STA during the MU-MIMO transmission; and performing the MU-MIMO transmission to a target STA including the first STA by beamforming based on an interference-avoiding precoding that eliminates interference due to data transmission from the third STA to the second STA from a receiving signal of the first STA and interference due to the MU-MIMO transmission from a receiving signal of the second STA.
PCT/KR2011/001995 2010-04-26 2011-03-23 Method for avoiding interference in wireless communication system and apparatus for the same WO2011136473A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US32815010P 2010-04-26 2010-04-26
US61/328,150 2010-04-26
KR1020110000114A KR20110119520A (en) 2010-04-26 2011-01-03 Method for avoiding interference in wireless communication system and apparatus for the same
KR10-2011-0000114 2011-01-03

Publications (2)

Publication Number Publication Date
WO2011136473A2 WO2011136473A2 (en) 2011-11-03
WO2011136473A3 true WO2011136473A3 (en) 2012-01-19

Family

ID=44862170

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2011/001995 WO2011136473A2 (en) 2010-04-26 2011-03-23 Method for avoiding interference in wireless communication system and apparatus for the same

Country Status (1)

Country Link
WO (1) WO2011136473A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140118097A (en) 2013-03-28 2014-10-08 한국전자통신연구원 Apparatus for multi-user multi-antenna transmission based on double codebook and method for the same
US9615309B2 (en) 2013-05-06 2017-04-04 Huawei Technologies Co., Ltd. System and method for Wi-Fi downlink-uplink protocol design for uplink interference alignment
EP2939350B1 (en) 2013-12-19 2019-02-20 Huawei Technologies Co., Ltd. Method and apparatus for multi-user multiple-input and multiple-output precoding

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
P. JANIS ET AL.: "Interference-avoiding MIMO schemes for device-to- device radio underlaying cellular networks", 2009 IEEE 20TH INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, 16 September 2009 (2009-09-16), pages 2385 - 2389 *
R. TANNIOUS ET AL.: "The interference channel with MIMO relay: Degrees of freedom", IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY (ISIT 2008), 11 July 2008 (2008-07-11), pages 1908 - 1912 *
T. WANG ET AL.: "Relaying schemes for MIMO broadcast channels: Coexistence of direct-link and relay-link users", 2009 IEEE 70TH VEHICULAR TECHNOLOGY CONFERENCE FALL (VTC 2009-FALL), 23 September 2009 (2009-09-23), pages 1 - 6 *

Also Published As

Publication number Publication date
WO2011136473A2 (en) 2011-11-03

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