WO2011111955A2 - Procédé de communication de terminal dans système à plusieurs porteuses utilisant pluralité de porteuses composantes - Google Patents

Procédé de communication de terminal dans système à plusieurs porteuses utilisant pluralité de porteuses composantes Download PDF

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Publication number
WO2011111955A2
WO2011111955A2 PCT/KR2011/001519 KR2011001519W WO2011111955A2 WO 2011111955 A2 WO2011111955 A2 WO 2011111955A2 KR 2011001519 W KR2011001519 W KR 2011001519W WO 2011111955 A2 WO2011111955 A2 WO 2011111955A2
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WO
WIPO (PCT)
Prior art keywords
control information
downlink control
carrier
terminal
message
Prior art date
Application number
PCT/KR2011/001519
Other languages
English (en)
Korean (ko)
Other versions
WO2011111955A3 (fr
Inventor
문성호
정재훈
한승희
김소연
Original Assignee
엘지전자 주식회사
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 KR1020110005235A external-priority patent/KR101707691B1/ko
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to US13/583,574 priority Critical patent/US9084249B2/en
Publication of WO2011111955A2 publication Critical patent/WO2011111955A2/fr
Publication of WO2011111955A3 publication Critical patent/WO2011111955A3/fr

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    • 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • 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
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • 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 signaling, i.e. of overhead other than pilot signals
    • 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
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • 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
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • the method may further include transmitting an acknowledgment (ACK) / not-acknowledgement (NACK) signal according to whether the configuration change message has been successfully decoded.
  • ACK acknowledgment
  • NACK not-acknowledgement
  • the terminal may transmit the configuration change complete message based on resource allocation information included in the first downlink control information.
  • the predetermined search space may be a common search space.
  • FIG. 1 illustrates an example of a wireless communication system in which the present invention may be implemented.
  • FIG. 16 illustrates an example of a signaling process between a base station and a terminal when changing the setting of the CIF.
  • the downlink slot includes a plurality of OFDM symbols in the time domain and includes N RB resource blocks (RBs) in the frequency domain.
  • the RB includes one slot in the time domain and a plurality of consecutive subcarriers in the frequency domain in resource allocation units.
  • the physical control format indicator channel (PCFICH), the physical hybrid ARQ indicator channel (PHICH), and the physical downlink control channel (PDCCH) may be transmitted to the control region.
  • the PCFICH is a physical channel for transmitting a format indicator indicating a format of a PDCCH, that is, a number of OFDM symbols constituting the PDCCH, to be included in every subframe.
  • the format indicator may be called a control format indicator (CFI).
  • the PHICH carries HARQ ACK / NACK signals in response to uplink transmission.
  • DCI format 1A The following information is transmitted in DCI format 1A. 1) flag to distinguish DCI format 0 and DCI format 1A, 2) localization / distribution VRB designation flag, 3) resource block designation, 4) modulation and coding scheme, 5) HARQ process number, 6) new data indicator, 7 9) TPC command for PUCCH, 9) DL designation index (TDD only). If the number of information bits of DCI format 1A is less than the number of information bits of DCI format 0, bits having a value of '0' are added to make the payload size of DCI format 0 the same. If the number of information bits in DCI format 1A is equal to any one of ⁇ 12, 14, 16, 20, 24, 26, 32, 40, 44, 56 ⁇ , a bit having a value of '0' is assigned to DCI format 1A. Add.
  • DCI format 1B is used for simple scheduling of one PDSCH codeword including precoding information. The following information is transmitted in DCI format 1B.
  • L format0 is equal to the payload size of DCI format 0 before the CRC is pasted. If the floor L format0 / 2 is smaller than (L format0 / 2), one bit having a value of '0' is added.
  • M TPC commands where M is the same as the payload size of DCI format 0 before L format0 is pasted CRC.
  • the UE may need to perform blind decoding up to 44 times.
  • the UE may know in advance the payload size of the PDCCH that should be detected during blind decoding by receiving information on the bandwidth, transmission mode, the number of antenna ports, etc. of the carrier through system information from the base station.
  • uplink may use the SC-FDMA transmission scheme.
  • the transmission scheme in which IFFT is performed after DFT spreading is called SC-FDMA.
  • SC-FDMA may also be referred to as DFT-s OFDM.
  • PAPR peak-to-average power ratio
  • CM cubic metric
  • the 3GPP LTE-A system may support a carrier aggregation system.
  • the carrier aggregation system may refer to 3GPP TR 36.815 V9.0.0 (2010-3).
  • the carrier aggregation system refers to a system in which one or more carriers having a bandwidth smaller than the target broadband is configured to configure the broadband when the wireless communication system attempts to support the broadband.
  • the carrier aggregation system may be called other names such as a multiple carrier system, a bandwidth aggregation system, and the like.
  • the carrier aggregation system may be classified into a contiguous carrier aggregation system in which each carrier is continuous and a non-contiguous carrier aggregation system in which each carrier is separated from each other.
  • a multi-carrier system or a carrier aggregation system it should be understood to include both the case where the component carrier is continuous and the case where it is discontinuous.
  • FIG. 8 is an example of a base station and a terminal constituting a carrier aggregation system.
  • one MAC manages and operates all n carriers to transmit and receive data. This also applies to the terminal of FIG. 8- (b).
  • One transport block and one HARQ entity per component carrier may exist from the UE's point of view.
  • the terminal may be scheduled for a plurality of carriers at the same time.
  • the carrier aggregation system of FIG. 8 may be applied to both a continuous carrier aggregation system and a discontinuous carrier aggregation system.
  • Each carrier managed by one MAC does not need to be adjacent to each other, and thus has an advantage in that it is flexible in terms of resource management.
  • a carrier indicator indicating a DL CC / UL CC through which a PDSCH / PUSCH for which PDCCH provides control information is transmitted is required.
  • a field including such a carrier indicator is hereinafter called a carrier indication field (CIF).
  • the base station may inform the configuration change of the downlink control information by transmitting an RRC connection reconfiguration message (retransmission if necessary) (S210). For example, it may be informed that the setting 1 for transmitting the DCI not including the CIF is changed to the setting 2 for transmitting the DCI including the CIF.
  • the base station does not know exactly whether the terminal monitors the DCI including the CIF or DCI not including the CIF. In other words, it is unclear at which point the base station should transmit the DCI including the CIF.
  • this time interval is indicated as a PDCCH size uncertainty period.
  • the PDCCH size unclear period may be, for example, a period from a subframe in which the base station transmits an RRC connection reconfiguration message to a subframe in which the base station receives an RRC connection reconfiguration complete message from the terminal.
  • the base station may change the setting of the CIF from the CIF setting 1 to the CIF setting 2.
  • CIF setting 1 may be a case where CIF is not included in DCI
  • CIF setting 2 may be a case where CIF is included in DCI.
  • DCI transmitted before / after such configuration change may have different payload sizes due to the CIF field. If the CIF field consists of 3 bits, the DCI including the CIF may increase the payload size by 3 bits.
  • the base station transmits an RRC connection reconfiguration message (M1 message) to the terminal in order to change the setting of the CIF from the CIF configuration 1 to the CIF configuration 2 (S410). If the UE fails to decode the M1 message, the terminal transmits a NACK signal to the base station (S420). In this case, the base station may incorrectly recognize the NACK as an ACK due to an error due to various reasons.
  • M1 message RRC connection reconfiguration message
  • the base station transmits the DCI according to the CIF configuration 1 after the n (for example, 4) subframe in the subframe receiving the RRC connection reset complete message (S460).
  • the base station transmits the RRC resetting message to the terminal again (S470). That is, the base station can know that the UE has failed to change the CIF configuration through the RRC connection reset complete message. Therefore, it attempts to change the CIF setting by sending an RRC connection reset message again.
  • DCI for non-cross carrier scheduling may be transmitted only in a form that does not include CIF in a specific CC in which an arbitrary CC or a PDCCH is transmitted. That is, it may be determined that DCI is transmitted only in a predetermined predetermined format.
  • variable Y k is defined as follows.
  • 19 shows another example of a search space in which DCI for non-cross carrier scheduling is transmitted and a search space in which DCI for cross-carrier scheduling is transmitted.
  • the base station 100 includes a processor 110, a memory 120, and an RF unit 130.
  • the processor 110 implements the proposed functions, processes and / or methods. For example, the processor 110 transmits a configuration change message indicating whether the carrier indication field (CIF) is included in the downlink control information (DCI) to the terminal.
  • the ACK / NACK signal for the configuration change message is received from the terminal, and two types of downlink control information are transmitted until the configuration change complete message is received from the terminal. That is, two types of downlink control information before and after the configuration change of the CIF by the configuration change message are transmitted.
  • After receiving the configuration change complete message from the terminal to check whether the configuration change is complete. If the configuration is changed, the downlink control information according to the new configuration is transmitted.
  • the terminal 200 includes a processor 210, a memory 220, and an RF unit 230.
  • the processor 210 implements the proposed functions, processes and / or methods. For example, the processor 210 receives a configuration change message indicating whether a carrier indication field (CIF) is included in the downlink control information (DCI), and transmits a configuration change complete message that is a response to the configuration change message. Receive a plurality of downlink control information indicating the resources used. Also, a configuration change completion message is transmitted based on resource allocation information included in downlink control information that has been successfully decoded among a plurality of downlink control information.
  • a configuration change completion message is transmitted based on resource allocation information included in downlink control information that has been successfully decoded among a plurality of downlink control information.
  • the processor 210 receives a plurality of downlink control information from one DL CC of a plurality of downlink component carriers (DL CCs), and is included in any one of downlink control information of the plurality of downlink control information.
  • the uplink signal is transmitted based on the resource allocation information.
  • the plurality of downlink control information may include downlink control information including a carrier indication field and downlink control information not including a carrier indication field, wherein any one of the downlink control information is a carrier indication field.
  • the format may be predetermined as downlink control information that does not include a.

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

Abstract

L'invention porte sur un procédé de communication d'un terminal, dans un système à plusieurs porteuses utilisant une pluralité de porteuses composantes. Le procédé comporte les étapes suivantes : la réception d'un message de reconfiguration qui indique si des informations de commande de liaison descendante (DCI) contiennent ou non un champ d'indication de porteuse (CIF) ; la réception d'une pluralité d'informations de commande de liaison descendante qui indiquent une ressource devant être utilisée pour la transmission d'un message d'achèvement de reconfiguration en réponse au message de reconfiguration, et l'envoi du message d'achèvement de reconfiguration concernant les informations d'attribution de ressources contenues dans les informations de commande de liaison descendante qui ont été décodées avec succès parmi la pluralité d'informations de commande de liaison descendante. La pluralité d'informations de commande de liaison descendante contiennent les premières informations de commande de liaison descendante qui existent avant la modification de la configuration de champ d'indication de porteuse des informations de commande de liaison descendante par le message de reconfiguration, et les secondes informations de commande de liaison descendante qui sont obtenues après la modification de la configuration de champ d'indication de porteuse des informations de commande de liaison descendante par le message de reconfiguration.
PCT/KR2011/001519 2010-03-09 2011-03-04 Procédé de communication de terminal dans système à plusieurs porteuses utilisant pluralité de porteuses composantes WO2011111955A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/583,574 US9084249B2 (en) 2010-03-09 2011-03-04 Communication method for a terminal in a multi-carrier system using a plurality of component carriers

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US31177910P 2010-03-09 2010-03-09
US61/311,779 2010-03-09
KR1020110005235A KR101707691B1 (ko) 2010-03-09 2011-01-19 복수의 요소 반송파를 사용하는 다중 반송파 시스템에서 단말의 통신 방법
KR10-2011-0005235 2011-01-19

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WO2011111955A2 true WO2011111955A2 (fr) 2011-09-15
WO2011111955A3 WO2011111955A3 (fr) 2012-01-12

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105052068A (zh) * 2013-03-19 2015-11-11 Lg电子株式会社 使终端能够在无线通信系统中收发信号的方法及装置
CN110168943A (zh) * 2016-11-04 2019-08-23 瑞典爱立信有限公司 使用多于一个波束对链路发送控制信息

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US20090175243A1 (en) * 2007-12-24 2009-07-09 Lg Electronics Inc. Method for transmitting and receiving signals using multi-band radio frequencies
US20090300456A1 (en) * 2008-04-25 2009-12-03 Interdigital Patent Holdings, Inc. Harq process utilization in multiple carrier wireless communications
US20090316659A1 (en) * 2008-06-19 2009-12-24 Telefonaktiebolaget L M Ericsson (Publ) Identifying Multi-Component Carrier Cells
US20100118720A1 (en) * 2008-10-31 2010-05-13 Interdigital Patent Holdings, Inc. Method and apparatus for monitoring and processing component carriers

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
US20090175243A1 (en) * 2007-12-24 2009-07-09 Lg Electronics Inc. Method for transmitting and receiving signals using multi-band radio frequencies
US20090300456A1 (en) * 2008-04-25 2009-12-03 Interdigital Patent Holdings, Inc. Harq process utilization in multiple carrier wireless communications
US20090316659A1 (en) * 2008-06-19 2009-12-24 Telefonaktiebolaget L M Ericsson (Publ) Identifying Multi-Component Carrier Cells
US20100118720A1 (en) * 2008-10-31 2010-05-13 Interdigital Patent Holdings, Inc. Method and apparatus for monitoring and processing component carriers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105052068A (zh) * 2013-03-19 2015-11-11 Lg电子株式会社 使终端能够在无线通信系统中收发信号的方法及装置
US10306611B2 (en) 2013-03-19 2019-05-28 Lg Electronics Inc. Method for enabling terminal to transmit and receive signal in wireless communications system and apparatus therefor
CN105052068B (zh) * 2013-03-19 2019-08-02 Lg电子株式会社 使终端能够在无线通信系统中收发信号的方法及装置
CN110168943A (zh) * 2016-11-04 2019-08-23 瑞典爱立信有限公司 使用多于一个波束对链路发送控制信息

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