WO2011103309A3 - Methods and systems for csi-rs transmission in lte-advance systems - Google Patents

Methods and systems for csi-rs transmission in lte-advance systems Download PDF

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Publication number
WO2011103309A3
WO2011103309A3 PCT/US2011/025272 US2011025272W WO2011103309A3 WO 2011103309 A3 WO2011103309 A3 WO 2011103309A3 US 2011025272 W US2011025272 W US 2011025272W WO 2011103309 A3 WO2011103309 A3 WO 2011103309A3
Authority
WO
WIPO (PCT)
Prior art keywords
csi
resource elements
transmission
systems
prb
Prior art date
Application number
PCT/US2011/025272
Other languages
French (fr)
Other versions
WO2011103309A2 (en
Inventor
Wenfeng Zhang
Original Assignee
Zte (Usa) 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 Zte (Usa) Inc. filed Critical Zte (Usa) Inc.
Priority to CN2011800007039A priority Critical patent/CN102742238A/en
Priority to EP11745237A priority patent/EP2489165A2/en
Priority to MX2011006037A priority patent/MX2011006037A/en
Priority to BRPI1100024A priority patent/BRPI1100024A2/en
Priority to JP2012501039A priority patent/JP2012514443A/en
Priority to RU2011132116/07A priority patent/RU2486687C2/en
Priority to US13/578,767 priority patent/US20130094411A1/en
Publication of WO2011103309A2 publication Critical patent/WO2011103309A2/en
Publication of WO2011103309A3 publication Critical patent/WO2011103309A3/en

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Classifications

    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Landscapes

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

Abstract

A method of allocating resource elements in an orthogonal frequency division multiplexing (OFDM) system for transmission of a channel state information reference signal (CSI-RS) is disclosed. The method includes converting resource elements to a two-dimensional frequency-time domain. The converted resource elements can then be partitioned to units of a physical resource block (PRB), which can be one subframe, for example. It can be determined whether a portion of a PRB is being used by another signal; and if the portion of the PRB is not being used, it can be allocated for transmission of the CSI-RS. The CSI-RS can be transmitted at resource element locations determined by the resource elements available to the CSI-RS in a regular or a frequency-division duplexing (FDD) downlink subframe, for example. The CSI-RS can be transmitted in a downlink subframe configured as a Multi-Media Broadcast over a Single Frequency Network (MBSFN) or a non-MBSFN subframe.
PCT/US2011/025272 2010-02-17 2011-02-17 Methods and systems for csi-rs transmission in lte-advance systems WO2011103309A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CN2011800007039A CN102742238A (en) 2010-02-17 2011-02-17 Methods and systems for CSI-RS transmission in LTE-ADVANCE systems
EP11745237A EP2489165A2 (en) 2010-02-17 2011-02-17 Methods and systems for csi-rs transmission in lte-advance systems
MX2011006037A MX2011006037A (en) 2010-02-17 2011-02-17 Methods and systems for csi-rs transmission in lte-advance systems.
BRPI1100024A BRPI1100024A2 (en) 2010-02-17 2011-02-17 methods and systems for csi-rs transmission in advanced lte systems
JP2012501039A JP2012514443A (en) 2010-02-17 2011-02-17 Method and system for CSI-RS transmission in LTE-ADVANCE system
RU2011132116/07A RU2486687C2 (en) 2010-02-17 2011-02-17 Methods and systems for csi-rs transmission in lte-advance systems
US13/578,767 US20130094411A1 (en) 2010-02-17 2011-02-17 Methods and systems for csi-rs transmission in lte-advance systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US30551210P 2010-02-17 2010-02-17
US61/305,512 2010-02-17

Publications (2)

Publication Number Publication Date
WO2011103309A2 WO2011103309A2 (en) 2011-08-25
WO2011103309A3 true WO2011103309A3 (en) 2011-12-29

Family

ID=44483568

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/025272 WO2011103309A2 (en) 2010-02-17 2011-02-17 Methods and systems for csi-rs transmission in lte-advance systems

Country Status (9)

Country Link
US (1) US20130094411A1 (en)
EP (1) EP2489165A2 (en)
JP (1) JP2012514443A (en)
KR (1) KR20120017410A (en)
CN (1) CN102742238A (en)
BR (1) BRPI1100024A2 (en)
MX (1) MX2011006037A (en)
RU (1) RU2486687C2 (en)
WO (1) WO2011103309A2 (en)

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Also Published As

Publication number Publication date
US20130094411A1 (en) 2013-04-18
EP2489165A2 (en) 2012-08-22
WO2011103309A2 (en) 2011-08-25
RU2011132116A (en) 2013-02-10
RU2486687C2 (en) 2013-06-27
BRPI1100024A2 (en) 2016-05-03
MX2011006037A (en) 2011-10-28
CN102742238A (en) 2012-10-17
KR20120017410A (en) 2012-02-28
JP2012514443A (en) 2012-06-21

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