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CN103718593A - Information feedback method, configuration method and device in cooperative multipoint transmission mode - Google Patents

Information feedback method, configuration method and device in cooperative multipoint transmission mode Download PDF

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Publication number
CN103718593A
CN103718593A CN201180072729.4A CN201180072729A CN103718593A CN 103718593 A CN103718593 A CN 103718593A CN 201180072729 A CN201180072729 A CN 201180072729A CN 103718593 A CN103718593 A CN 103718593A
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CN
China
Prior art keywords
service point
main service
pmi
terminal
modes
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Pending
Application number
CN201180072729.4A
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Chinese (zh)
Inventor
张元涛
王轶
张翼
周华
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Fujitsu Ltd
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Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of CN103718593A publication Critical patent/CN103718593A/en
Pending legal-status Critical Current

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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
    • H04B7/06—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
    • H04B7/0645—Variable feedback
    • H04B7/065—Variable contents, e.g. long-term or short-short
    • 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
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • 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

Landscapes

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

Abstract

Provided are an information feedback method and device in a coordinated multipoint transmission mode. The method includes: a terminal determining whether to feed back only one piece of rank information (RI) according to high layer configuration; if only one piece of RI is to be fed back, then the terminal feeding back to the network side the RI, precoding matrix information (PMI) and channel quality information (CQI) based on a hypothesis that only a master serving node performs sending, and feeding back to the network side the PMI and CQI of an adjacent serving node based on the RI which performs coordinated multipoint transmission (CoMP) with the master serving node according to the CoMP mode. The method and device provided by the embodiments of the present invention can reduce feedback overhead under the premise of supporting dynamic handover in various CoMP modes.

Description

PCT国内申请，说明书已公开。PCT domestic application, specification has been published.

Claims (1)

1st, the information feedback method under a kind of cooperation multipoint transmission mode, wherein, methods described includes：
Terminal determines whether only to feed back a rank information according to high level configuration（RI) ;
If only feeding back a RI, terminal feeds back RI, the precoding matrix information sent based on only main service point when assuming to network side（) and channel quality information PMI（), CQI and according to cooperation multiple spot（CoMP) transmission means, PMI and CQI of the adjacent service point based on the RI that CoMP is with main service point are fed back to network side.
2nd, according to the method described in claim 1, wherein,
If feeding back multiple RI, terminal feeds back RI, PMI and CQI when hypothesis is sent based on only main service point to network side, and determines cooperation multiple spot according to high level configuration（CoMP) the RI design conditions of transmission means, RI, PMI and CQI of the correspondence CoMP transmission mode are fed back according to the RI design conditions of the CoMP transmission mode to network side.
3rd, method according to claim 1 or 2, wherein, the terminal, which feeds back RI, PMI and the CQI for sending hypothesis based on only main service point to network side, to be included：
The RI for the main service point that terminal is fed back according to needed for being determined high-rise configuration calculation；
Terminal calculates the RI of the main service point according to the RI of main service point calculation;
Terminal determines the PMI of main service point according to the RI of the main service point;
Terminal calculates the CQI of main service point according to the RI and PMI of the main service point;
Terminal is by RI, PMI and CQI feedback of the main service point to network side.
4th, method according to claim 3, wherein, the RI of main service point calculation includes：RI is calculated according to the channel status of main service point to the terminal, the RI calculated is regard as the RI sent based on only main service point when assuming;Or
Assume to calculate RI according to corresponding send of CoMP transmission mode, regard the RI calculated as the RI sent based on only main service point when assuming.
5th, method according to claim 2, wherein, if CoMP transmission mode sends for joint（JT) mode, then RI, PMI and polymerization CQI that the transmission that terminal feeds back the correspondence JT modes according to the JT modes to network side is assumed, is specifically included：
Terminal is assumed to calculate the RI of the JT modes according to the transmission of the JT modes;
PMI when terminal is sent according to the RI of the JT modes and based on only main service point, and with main service point The PMI of JT adjacent service point is, the polymerization CQI of the JT modes is calculated;
Terminal feeds back the RI of the JT modes to network side, and the PMI and the JT modes for doing JT adjacent service point with main service point polymerize CQI.
6th, method according to claim 2, wherein, if CoMP transmission mode sends for joint（JT) mode, then RI, PMI and polymerization CQI that the transmission that terminal feeds back the correspondence JT modes according to the JT modes to network side is assumed, is specifically included：
Terminal is assumed to calculate the RI of the JT modes according to the transmission of the JT modes;
Terminal determines the PMI of the main service point needs use of the JT modes according to the RI of the JT modes and the PMI of JT adjacent service point is with main service point;
The PMI that terminal needs to use according to the RI of the JT modes and main service point, and with the PMI that main service point does JT adjacent service point calculates the JT modes polymerize CQI;
Terminal is the PMI of JT adjacent service point to the RI of the network side feedback JT modes, the PMI of main service point needs use, with main service point and polymerize CQI.
7th, method according to claim 2, wherein, if CoMP transmission mode sends point selection (DPS) mode for dynamic, RI, PMI and CQI that the transmission that terminal feeds back the correspondence DPS modes according to the DPS modes to network side is assumed are specifically included：
Terminal calculates respective RI according to the channel status of each sending point to the terminal;
Terminal determines the PMI of each sending point according to the RI of each sending point;
Terminal calculates the CQI of each sending point according to the RI and PMI of each sending point;
Terminal feeds back RI, PMI and CQI of each sending point to network side.
8th, the feedback of the information collocation method under a kind of cooperation multipoint transmission mode, wherein, methods described includes：Base station configured according to the CoMP transmission mode of terminal need terminal feed back RI number, and/or the RI of main service point calculation, and/or under CoMP transmission mode RI design conditions；
The number for the RI that terminal is fed back the need for base station will be configured, and/or the RI of main service point calculation, and/or RI design conditions are sent to terminal by high-level signaling under CoMP transmission mode.
9th, a kind of terminal device, wherein, the terminal device includes：
First determining unit, it determines whether only to feed back a rank information according to high level configuration（RI) value；First feedback unit, it feeds back to network side sends the RI assumed, precoding matrix information based on only main service point（) and channel quality information PMI（), CQI and according to cooperation multiple spot（CoMP) transmission means, to network side Feedback is CoMP PMI and CQI of the adjacent service point based on the RI with main service point.
10th, terminal device according to claim 9, wherein, the terminal device also includes：
Second determining unit, it determines cooperation multiple spot when first determining unit determines to feed back multiple RI according to high level configuration（CoMP) the RI design conditions of transmission means；
Second feedback unit, the RI design conditions of its CoMP transmission mode determined according to second determining unit feed back RI, PMI and CQI of the correspondence CoMP transmission mode to network side.
11st, terminal device according to claim 9, wherein, first feedback unit includes：First determining module, the RI of its main service point fed back according to needed for being determined high-rise configuration calculation；First computing module, the RI of its main service point determined according to first determining module calculation calculates the RI of the main service point;
Second determining module, the RI of its main service point calculated according to first computing module determines the PMI of main service point;
The PMI for the main service point that second computing module, the RI of its main service point calculated according to first computing module and second determining module are determined calculates the CQI of main service point;
First feedback module, the CQI feedback of the main service point that the PMI and second computing module of the main service point that the RI of its main service point for calculating first computing module, second determining module are determined are calculated to network
12nd, terminal device according to claim 11, wherein, the RI of main service point calculation includes：
RI is calculated according to the channel status of main service point to the terminal device, the RI calculated is regard as the RI that hypothesis is sent based on only main service point;Or
Assumed to calculate RI according to the transmission of CoMP transmission mode, regard the RI calculated as the RI that hypothesis is sent based on only main service point.
13rd, terminal device according to claim 10, wherein, second feedback unit includes：3rd computing module, it sends in the CoMP transmission mode for joint（JT) during mode, assumed to calculate the RI of the JT modes according to the transmission of the JT modes;
PMI when the 4th computing module, the RI of its JT mode calculated according to the 3rd computing module and transmission based on only main service point, and with the PMI that main service point does JT adjacent service point calculates the JT modes polymerize CQI; Second feedback module, it feeds back the RI for the JT modes that the 3rd computing module is calculated to network side, PMI of adjacent service point and the JT modes of the 4th computing module calculating for being JT with main service point polymerize CQI
14th, terminal device according to claim 10, wherein, second feedback unit includes：5th computing module, it sends in the CoMP transmission mode for joint（JT) during mode, assumed to calculate the RI of the JT modes according to the transmission of the JT modes;
3rd determining module, the RI of its JT mode calculated according to the 5th computing module determines that the main service point of the JT modes needs the PMI of use and the PMI of JT adjacent service point is with main service point;
6th computing module, the main service point for the JT modes that the RI of its JT mode calculated according to the 5th computing module and the 3rd determining module are determined needs the PMI used, and the PMI of JT adjacent service point is with main service point, calculate the polymerization CQI of the JT modes;
3rd feedback module, its main service point that the JT modes that the RI for the JT modes that the 5th computing module is calculated, the 3rd determining module are determined are fed back to network side needs the PMI used, the PMI of adjacent service point and the JT modes of the 6th computing module calculating that are JT with main service point polymerize CQI
15th, terminal device according to claim 10, wherein, second feedback unit includes：7th computing module, it sends point selection in the CoMP transmission mode for dynamic（DPS) during mode, respective RI is calculated according to the channel status of each sending point;
4th determining module, the RI of its each sending point calculated according to the 7th computing module determines the PMI of each sending point;
The PMI for each sending point that 8th computing module, the RI of its each sending point calculated according to the 7th computing module and the 4th determining module are determined calculates the CQI of each sending point;
4th feedback module, the CQI for each sending point that its PMI and the 8th computing module that each sending point that the RI for each sending point that the 7th computing module is calculated, the 4th determining module are determined is fed back to network side are calculated
16th, a kind of base station, wherein, the base station includes：
Dispensing unit, its configured according to the CoMP transmission mode of terminal need terminal feed back RI number, and/or the RI of main service point calculation, and/or under CoMP transmission mode RI design conditions；
Transmitting element, the number for the RI that terminal is fed back the need for it configures the dispensing unit, and/or the RI of main service point calculation, and/or RI design conditions are sent to end by high-level signaling under CoMP transmission mode 17th, a kind of computer-readable program, wherein, when performing the program in terminal device, the program causes computer perform claim in the terminal device to require the information feedback method under the cooperation multipoint transmission mode described in any one of 1-7.
18th, a kind of storage medium for the computer-readable program that is stored with, wherein, the computer-readable program causes computer perform claim in terminal device to require the information feedback method under the cooperation multipoint transmission mode described in any one of 1-7.
19th, a kind of computer-readable program, wherein, when performing the program in terminal device, the program causes the feedback of the information collocation method under cooperation multipoint transmission mode of the computer in the terminal device described in perform claim requirement 8.
20th, a kind of storage medium for the computer-readable program that is stored with, wherein, the computer-readable program causes the feedback of the information collocation method under cooperation multipoint transmission mode of the computer in terminal device described in perform claim requirement 8.
CN201180072729.4A 2011-11-08 2011-11-08 Information feedback method, configuration method and device in cooperative multipoint transmission mode Pending CN103718593A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2011/081947 WO2013067689A1 (en) 2011-11-08 2011-11-08 Information feedback method, configuration method and device in coordinated multipoint transmission mode

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CN103718593A true CN103718593A (en) 2014-04-09

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WO (1) WO2013067689A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11477710B2 (en) * 2017-10-20 2022-10-18 Nokia Solutions And Networks Oy Method and apparatus for realizing dynamic point selection

Citations (5)

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Publication number Priority date Publication date Assignee Title
US20100027456A1 (en) * 2008-08-01 2010-02-04 Texas Instruments Incorporated Network mimo reporting, control signaling and transmission
CN101827387A (en) * 2009-03-04 2010-09-08 中兴通讯股份有限公司 Channel quality reporting method and corresponding device
CN101969367A (en) * 2010-09-30 2011-02-09 中兴通讯股份有限公司 Channel information feedback method and terminal
CN101986588A (en) * 2010-11-09 2011-03-16 中兴通讯股份有限公司 Channel state information feedback method and terminal
CN102201897A (en) * 2011-04-29 2011-09-28 中兴通讯股份有限公司 Channel state information (CSI) processing method, device and system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100027456A1 (en) * 2008-08-01 2010-02-04 Texas Instruments Incorporated Network mimo reporting, control signaling and transmission
CN101827387A (en) * 2009-03-04 2010-09-08 中兴通讯股份有限公司 Channel quality reporting method and corresponding device
CN101969367A (en) * 2010-09-30 2011-02-09 中兴通讯股份有限公司 Channel information feedback method and terminal
CN101986588A (en) * 2010-11-09 2011-03-16 中兴通讯股份有限公司 Channel state information feedback method and terminal
CN102201897A (en) * 2011-04-29 2011-09-28 中兴通讯股份有限公司 Channel state information (CSI) processing method, device and system

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