WO2008152612A8 - Method and system for operating a multi-user multiple-input multiple-output (mu-mimo) wireless communications system - Google Patents

Method and system for operating a multi-user multiple-input multiple-output (mu-mimo) wireless communications system Download PDF

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Publication number
WO2008152612A8
WO2008152612A8 PCT/IB2008/052353 IB2008052353W WO2008152612A8 WO 2008152612 A8 WO2008152612 A8 WO 2008152612A8 IB 2008052353 W IB2008052353 W IB 2008052353W WO 2008152612 A8 WO2008152612 A8 WO 2008152612A8
Authority
WO
WIPO (PCT)
Prior art keywords
base station
mimo
operating
output
wireless communications
Prior art date
Application number
PCT/IB2008/052353
Other languages
French (fr)
Other versions
WO2008152612A3 (en
WO2008152612A2 (en
Inventor
Kai Xu
Chen Zixiong
Ni Ma
Kai Sun
Bei Zhou
Ying Wang
Ping Zhang
Original Assignee
Nxp B.V.
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 Nxp B.V. filed Critical Nxp B.V.
Priority to EP08763340.0A priority Critical patent/EP2174428B1/en
Priority to JP2010511776A priority patent/JP5335778B2/en
Priority to US12/452,067 priority patent/US7944906B2/en
Publication of WO2008152612A2 publication Critical patent/WO2008152612A2/en
Publication of WO2008152612A3 publication Critical patent/WO2008152612A3/en
Publication of WO2008152612A8 publication Critical patent/WO2008152612A8/en
Priority to US13/108,109 priority patent/US8958394B2/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
    • 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
    • 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
    • H04L1/0026—Transmission of channel quality 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
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H04L1/0618—Space-time coding
    • H04L1/0625—Transmitter arrangements
    • 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

Abstract

A technique for operating a wireless communications system that supports multi-user multiple-input multiple-output (MU-MIMO) communications between a base station and multiple mobile stations involves generating inter-cell interference information at the mobile stations and providing the inter-cell interference information to the base station. The base station uses the inter-cell interference information to calculate channel quality indicators (CQIs) and then makes scheduling decisions in response to the CQIs. Data is transmitted from the base station to the mobile stations according to the scheduling decisions.
PCT/IB2008/052353 2007-06-14 2008-06-13 Method and system for operating a multi-user multiple-input multiple-output (mu-mimo) wireless communications system WO2008152612A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP08763340.0A EP2174428B1 (en) 2007-06-14 2008-06-13 Method and system for operating a multi-user multiple-input multiple-output (mu-mimo) wireless communications system
JP2010511776A JP5335778B2 (en) 2007-06-14 2008-06-13 Method and system for operating a multi-user multi-input multi-output (MU-MIMO) wireless communication system
US12/452,067 US7944906B2 (en) 2007-06-14 2008-06-13 Method and system for operating a multi-user multiple-input multiple-output (MU-MIMO) wireless communications system
US13/108,109 US8958394B2 (en) 2007-06-14 2011-05-16 Method and system for operating a multi-user multiple-input multiple output (MU-MIMO) wireless communications system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2007101282753A CN101325741B (en) 2007-06-14 2007-06-14 Method and system for operating MU-MIMO wireless communication system
CN200710128275.3 2007-06-14

Publications (3)

Publication Number Publication Date
WO2008152612A2 WO2008152612A2 (en) 2008-12-18
WO2008152612A3 WO2008152612A3 (en) 2009-03-12
WO2008152612A8 true WO2008152612A8 (en) 2010-03-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/052353 WO2008152612A2 (en) 2007-06-14 2008-06-13 Method and system for operating a multi-user multiple-input multiple-output (mu-mimo) wireless communications system

Country Status (5)

Country Link
US (2) US7944906B2 (en)
EP (1) EP2174428B1 (en)
JP (1) JP5335778B2 (en)
CN (1) CN101325741B (en)
WO (1) WO2008152612A2 (en)

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Also Published As

Publication number Publication date
EP2174428A2 (en) 2010-04-14
WO2008152612A3 (en) 2009-03-12
US8958394B2 (en) 2015-02-17
WO2008152612A2 (en) 2008-12-18
EP2174428B1 (en) 2016-04-27
US20110211485A1 (en) 2011-09-01
US7944906B2 (en) 2011-05-17
US20100195514A1 (en) 2010-08-05
CN101325741A (en) 2008-12-17
JP5335778B2 (en) 2013-11-06
CN101325741B (en) 2012-12-12
JP2011514690A (en) 2011-05-06

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