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WO2013054979A1 - Procédé et dispositif de transmission d'informations de commande de liaison descendante - Google Patents

Procédé et dispositif de transmission d'informations de commande de liaison descendante Download PDF

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Publication number
WO2013054979A1
WO2013054979A1 PCT/KR2011/009589 KR2011009589W WO2013054979A1 WO 2013054979 A1 WO2013054979 A1 WO 2013054979A1 KR 2011009589 W KR2011009589 W KR 2011009589W WO 2013054979 A1 WO2013054979 A1 WO 2013054979A1
Authority
WO
WIPO (PCT)
Prior art keywords
control information
downlink control
pdcch
transmitting
information
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.)
Ceased
Application number
PCT/KR2011/009589
Other languages
English (en)
Korean (ko)
Inventor
박병성
김상하
장일두
이희봉
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.)
Ericsson LG Co Ltd
Original Assignee
LG Ericsson Co 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
Priority claimed from KR1020110130322A external-priority patent/KR20130039638A/ko
Application filed by LG Ericsson Co Ltd filed Critical LG Ericsson Co Ltd
Publication of WO2013054979A1 publication Critical patent/WO2013054979A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • 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
    • 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
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the present invention relates to the field of LTE systems, and more particularly, to a method and apparatus for transmitting downlink control information.
  • 3GPP 3rd Generation Partnership Project
  • LTE Long Term Evolution
  • a control channel (PDCCH) and a data channel (PDSCH) are allocated in a frequency-time domain on the downlink. Allocate and use The PDCCH is used to transmit various types of downlink control information formats according to uplink scheduling assignment information and downlink control information (DCI) such as a power control command. Since a physical resource capable of transmitting a PDCCH is limited to a maximum of 4 symbols, the capacity of the PDCCH itself may also be limited according to the limitation of the physical resource. CoMP (coordinated multi-point operatoin), which will be introduced in the system after LTE 11, is expected to require more scheduling information.
  • DCI downlink control information
  • the present invention provides a method and apparatus for transmitting downlink control information.
  • the apparatus for transmitting downlink control information allocates a portion of a physical downlink shared channel (PDSCH) resource region to an enhanced physical downlink control channel (E-PDCCH) region to control downlink information (DCI) for the mobile communication terminal. send information).
  • PDSCH physical downlink shared channel
  • E-PDCCH enhanced physical downlink control channel
  • DCI control downlink information
  • a method of transmitting downlink control information includes: a) allocating a portion of a physical downlink shared channel (PDSCH) resource region to an enhanced physical downlink control channel (E-PDCCH); And b) transmitting downlink cotnrol information (DCI) for the mobile communication terminal using PDCCH or E-PDCCH.
  • PDSCH physical downlink shared channel
  • E-PDCCH enhanced physical downlink control channel
  • DCI downlink cotnrol information
  • efficient cooperative scheduling between PDCCH and E-PDCCH can be performed.
  • 1 is an exemplary view showing a PDCCH and a PDSCH resource region in an LTE system.
  • FIG. 2 is an exemplary view showing the configuration of an LTE-Advanced system according to an embodiment of the present invention.
  • FIG 3 is an exemplary view showing an E-PDCCH resource region according to an embodiment of the present invention.
  • FIG 4 is an exemplary view showing an E-PDCCH PRB structure according to an embodiment of the present invention.
  • FIG. 2 is an exemplary view showing the configuration of an LTE-Advanced system according to an embodiment of the present invention.
  • the LTE-Advanced system includes a base station 10 and a terminal 20.
  • the base station 10 may provide a communication service through a wireless link to the terminal 20 in a coverage region where the base station provides a network access service.
  • UE 1 (20a) can transmit downlink control information to the E-PDCCH.
  • the S-CH may include a physical downlink shared channel (PDSCH) or a physical uplink shared channel (PUSCH) that carries user data.
  • PDSCH physical downlink shared channel
  • PUSCH physical uplink shared channel
  • downlink control information may be transmitted through an E-PDCCH.
  • MU-MIMO Multi User MIMO
  • the information may be transferred to the E-PDCCH.
  • the control channel (PDCCH) and the data channel (PDSCH) for the terminals 30a to 30c are allocated and used in the frequency-time domain on the downlink.
  • the PDCCH is used to transmit various types of downlink control information formats according to uplink scheduling assignment information and downlink control information (DCI) such as a power control command.
  • DCI downlink control information
  • the PDCCH includes common purpose such as transmission of system information, power control command, and response information for random access attempt, and uplink and downlink allocation information for scheduling user request data.
  • a physical resource capable of transmitting a PDCCH is limited to a maximum of 4 symbols, the capacity itself of the PDCCH may be limited accordingly.
  • CoMP Coordinated multi-point operatoin
  • LTE release 10 supports cross carrier scheduling, which enables scheduling of all carriers in a component carrier having a good channel state.
  • the capacity of the PDCCH that can be used in the carrier increases.
  • multi-user access schemes are available for downlink antennas increased after release 10, this also increases the PDCCH capacity.
  • E-PDCCH Enhanced-Physical Downlink Control Channel
  • the apparatus for transmitting downlink control information according to the present invention may transmit downlink control information for the mobile communication terminal by allocating a part of the PDSCH resource region to the E-PDCCH.
  • E-PDCCH Error-PDCCH Due to the capacity problem of the downlink control information, an improved control channel (E-PDCCH) is being discussed in order to improve the capacity of the control channel by introducing the downlink control information into the data region as shown in FIG. 3.
  • the capacity of the E-PDCCH is extended as much as the added physical resource region, and the transmission scheme of the PDSCH can be utilized.
  • PRB physical resource block
  • the PDCCH uses a Quadrature Phase Shift Keying (QPSK) modulation and demodulation technique based on a Cell Reference Signal (CRS). signal and / or link adaptive modulation and demodulation techniques may cause capacity and performance differences between PDCCH and E-PDCCH.
  • QPSK Quadrature Phase Shift Keying
  • CRS Cell Reference Signal
  • PDCCH and E- for effective cooperative scheduling when applying a multi-user access method such as MU-MIMO (MU-MIMO) that can be supported in Release 9 or 10, or CoMP, which will be introduced in Release 11, etc.
  • MU-MIMO multi-user access method
  • CoMP which will be introduced in Release 11, etc.
  • a method of allocating downlink control information between PDCCHs is required.
  • the present invention describes a method of allocating downlink control information to the E-PDCCH and the PDCCH.
  • PRBs there are a plurality of PRBs as radio resources for the PDSCH, and in the present invention, some of the PRB resources for the PDSCH are allocated for the E-PDCCH. Some or all of the resources of the PRB time domain allocated for the E-PDCCH may be used for the E-PDCCH.
  • the PDCCH is a physical channel using orthogonal frequency division multiplexing (OFDM) symbols within first to fourth in a subframe for the entire PRB region.
  • OFDM orthogonal frequency division multiplexing
  • any one of the following methods or a combination of the following methods is used to transmit downlink control information for the E-PDCCH and the PDCCH.
  • Downlink control information for a terminal supporting LTE release (Release) 11 or more standard is transmitted using a PDCCH or an E-PDCCH.
  • the downlink control information of the common search space including the system, paging, random access control channel (RACH) response, group power control information, etc. is transmitted using the PDCCH, and the user Downlink control information of a UE-specific search space including scheduling information for data transmission of a user equipment is separately transmitted using E-PDCCH.
  • the scheduling information for data transmission of the user terminal includes a resource allocation method, a resource size, a modulation scheme, precoding information, and the like.
  • the user search region downlink control information of a UE involved in cooperative scheduling such as coordinated multi-point operatoin (CoMP) and multi-user MIMO (MU-MIMO) is transmitted through a PDCCH or an E-PDCCH.
  • CoMP coordinated multi-point operatoin
  • MU-MIMO multi-user MIMO
  • the downlink control information is transmitted to the PDCCH or the E-PDCCH according to the downlink or uplink channel information.
  • Computer-readable recording media include all kinds of recording devices that store data that can be read by a computer system. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disks, optical data storage devices, and the like, which are also implemented in the form of carrier waves (for example, transmission over the Internet). Include.
  • the computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.
  • functional programs, codes, and code segments for implementing the above embodiments can be easily inferred by programmers in the art to which the present invention belongs.

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

Abstract

La présente invention porte sur un procédé et un dispositif de transmission d'informations de commande de liaison descendante dans un système LTE. Le dispositif de transmission d'informations de commande de liaison descendante selon la présente invention attribue une partie d'une région de ressource de canal partagé de liaison descendante physique (PDSCH) à une région de canal de commande de liaison descendante physique amélioré (E-PDCCH), et transmet des informations de commande de liaison descendante (DCI) concernant un terminal de communication mobile sur un PDCCH ou un E-PDCCH.
PCT/KR2011/009589 2011-10-12 2011-12-13 Procédé et dispositif de transmission d'informations de commande de liaison descendante Ceased WO2013054979A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2011-0104244 2011-10-12
KR20110104244 2011-10-12
KR10-2011-0130322 2011-12-07
KR1020110130322A KR20130039638A (ko) 2011-10-12 2011-12-07 하향 링크 제어 정보 전송 방법 및 장치

Publications (1)

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WO2013054979A1 true WO2013054979A1 (fr) 2013-04-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021134577A1 (fr) * 2019-12-31 2021-07-08 华为技术有限公司 Dispositif et procédé de transmission de données

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080092222A (ko) * 2007-04-11 2008-10-15 엘지전자 주식회사 Ｔｄｄ 시스템에서의 데이터 전송 방법
JP2009272827A (ja) * 2008-05-02 2009-11-19 Ntt Docomo Inc 移動通信システムにおける基地局装置、ユーザ装置及び方法
WO2010053984A2 (fr) * 2008-11-04 2010-05-14 Nortel Networks Limited Établissement de structure de commande de liaison descendante dans une première porteuse pour indiquer une information de commande dans une seconde porteuse différente
KR20100123631A (ko) * 2009-05-14 2010-11-24 엘지전자 주식회사 다중 반송파 시스템에서 제어채널을 모니터링하는 장치 및 방법
KR20110138073A (ko) * 2010-06-18 2011-12-26 삼성전자주식회사 이동 통신 시스템에서 제어 채널 자원 그룹핑 방법 및 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080092222A (ko) * 2007-04-11 2008-10-15 엘지전자 주식회사 Ｔｄｄ 시스템에서의 데이터 전송 방법
JP2009272827A (ja) * 2008-05-02 2009-11-19 Ntt Docomo Inc 移動通信システムにおける基地局装置、ユーザ装置及び方法
WO2010053984A2 (fr) * 2008-11-04 2010-05-14 Nortel Networks Limited Établissement de structure de commande de liaison descendante dans une première porteuse pour indiquer une information de commande dans une seconde porteuse différente
KR20100123631A (ko) * 2009-05-14 2010-11-24 엘지전자 주식회사 다중 반송파 시스템에서 제어채널을 모니터링하는 장치 및 방법
KR20110138073A (ko) * 2010-06-18 2011-12-26 삼성전자주식회사 이동 통신 시스템에서 제어 채널 자원 그룹핑 방법 및 장치

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021134577A1 (fr) * 2019-12-31 2021-07-08 华为技术有限公司 Dispositif et procédé de transmission de données
US12408140B2 (en) 2019-12-31 2025-09-02 Huawei Technologies Co., Ltd. Data transmission method and apparatus

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