GB2495168B - Method and apparatus for multiple input multiple output distributed antenna arrays - Google Patents

Method and apparatus for multiple input multiple output distributed antenna arrays

Info

Publication number
GB2495168B
GB2495168B GB1211156.3A GB201211156A GB2495168B GB 2495168 B GB2495168 B GB 2495168B GB 201211156 A GB201211156 A GB 201211156A GB 2495168 B GB2495168 B GB 2495168B
Authority
GB
United Kingdom
Prior art keywords
transmission
joint
user terminal
points
precoding matrix
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
GB1211156.3A
Other versions
GB201211156D0 (en
GB2495168A (en
Inventor
Tommi Tapani Koivisto
Mihai Horatiu Enescu
Timo E Roman
Karol Schober
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renesas Electronics Corp
Original Assignee
Renesas Mobile Corp
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 Renesas Mobile Corp filed Critical Renesas Mobile Corp
Priority to GB1211156.3A priority Critical patent/GB2495168B/en
Publication of GB201211156D0 publication Critical patent/GB201211156D0/en
Publication of GB2495168A publication Critical patent/GB2495168A/en
Application granted granted Critical
Publication of GB2495168B publication Critical patent/GB2495168B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [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
    • H04B7/0486—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking channel rank into account
    • 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
    • H04B7/0621—Feedback content
    • H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
    • 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
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • 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
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • 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
    • H04L1/0001—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
    • H04L1/0028—Formatting
    • H04L1/0031—Multiple signaling transmission
    • 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
    • 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
    • H04B7/0469—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account taking special antenna structures, e.g. cross polarized antennas into account

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)

Abstract

The present invention is concerned with transmissions from multiple distributed transmission points to a user terminal. The transmit points and the user terminal each have a multiple-input-multiple-output (MIMO) capability. For example, the present invention could be applied to coordinated multi-point (CoMP) transmissions. The user terminal determines a transmission rank and a precoding matrix for each of at least two transmission points of a plurality of transmission points. A joint transmission rank for a joint transmission involving each of the at least two transmission points is determined. Next, the user terminal selects a joint precoding matrix which provides the joint transmission rank and is based on the precoding matrices of respective transmission points. Furthermore, a sub-matrix of the joint precoding matrix is obtained by applying column permutations to one of the transmission point precoding matrices (see the third equation on page 20). The user terminals transmit channel state information (CSI) including a description of the selected joint precoding matrix.
GB1211156.3A 2011-09-27 2011-09-27 Method and apparatus for multiple input multiple output distributed antenna arrays Active GB2495168B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1211156.3A GB2495168B (en) 2011-09-27 2011-09-27 Method and apparatus for multiple input multiple output distributed antenna arrays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1211156.3A GB2495168B (en) 2011-09-27 2011-09-27 Method and apparatus for multiple input multiple output distributed antenna arrays

Publications (3)

Publication Number Publication Date
GB201211156D0 GB201211156D0 (en) 2012-08-08
GB2495168A GB2495168A (en) 2013-04-03
GB2495168B true GB2495168B (en) 2013-10-16

Family

ID=46704098

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1211156.3A Active GB2495168B (en) 2011-09-27 2011-09-27 Method and apparatus for multiple input multiple output distributed antenna arrays

Country Status (1)

Country Link
GB (1) GB2495168B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019023828A1 (en) * 2017-07-31 2019-02-07 华为技术有限公司 Jt precoding weight matrix generation method, device, and system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010105415A1 (en) * 2009-03-17 2010-09-23 Huawei Technologies Co., Ltd. Method for generating a codebook
US20100273495A1 (en) * 2009-01-06 2010-10-28 Texas Instruments Incorporated Predecoding for Joint Processing Coordinated Multi-Point Transmission

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100273495A1 (en) * 2009-01-06 2010-10-28 Texas Instruments Incorporated Predecoding for Joint Processing Coordinated Multi-Point Transmission
WO2010105415A1 (en) * 2009-03-17 2010-09-23 Huawei Technologies Co., Ltd. Method for generating a codebook

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Hitachi, "An issue on multi-cell antenna allocation for joint approaches", 3GPP Draft R1-090598, 4 Feb 2009. *

Also Published As

Publication number Publication date
GB201211156D0 (en) 2012-08-08
GB2495168A (en) 2013-04-03

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