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WO2015046811A1 - Procédé pour établir une synchronisation harq-ack de liaison descendante et appareil associé - Google Patents

Procédé pour établir une synchronisation harq-ack de liaison descendante et appareil associé Download PDF

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Publication number
WO2015046811A1
WO2015046811A1 PCT/KR2014/008708 KR2014008708W WO2015046811A1 WO 2015046811 A1 WO2015046811 A1 WO 2015046811A1 KR 2014008708 W KR2014008708 W KR 2014008708W WO 2015046811 A1 WO2015046811 A1 WO 2015046811A1
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WO
WIPO (PCT)
Prior art keywords
harq
tdd
ack timing
pcell
scell
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/KR2014/008708
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English (en)
Korean (ko)
Inventor
노민석
최우진
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KT Corp
Original Assignee
KT 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
Priority claimed from KR1020140027531A external-priority patent/KR101561838B1/ko
Application filed by KT Corp filed Critical KT Corp
Priority to CN201480053584.7A priority Critical patent/CN105594147A/zh
Priority to US15/024,873 priority patent/US10432361B2/en
Publication of WO2015046811A1 publication Critical patent/WO2015046811A1/fr
Anticipated expiration legal-status Critical
Priority to US16/542,513 priority patent/US10742364B2/en
Ceased legal-status Critical Current

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Classifications

    • 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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements

Definitions

  • the present invention relates to a method for setting downlink HARQ-ACK timing and an apparatus therefor, and more particularly, to perform carrier aggregation and joint operation in which duplex modes of two or more cells are set to TDD and FDD, respectively.
  • LTE Long Term Evolution
  • LTE-Advanced of the current 3GPP series are high-speed and large-capacity communication systems that can transmit and receive various data such as video and wireless data out of voice-oriented services.
  • the development of technology capable of transferring large amounts of data is required.
  • deployments such as a plurality of cells or small cells are introduced, there is a need for a technique and a method for enabling carrier aggregation to be applicable in various deployment scenarios.
  • a duplex mode of two or more cells is set to FDD and TDD, respectively, so that there is a need for a technology that supports joint operation and carrier aggregation performing transmission and reception in a plurality of base stations or heterogeneous networks under different situations.
  • how the duplex modes of the Pcell and the Scell set the timing of the downlink HARQ-ACK in different joint operations affects the efficiency of the entire network.
  • the present invention is to improve the communication efficiency by setting the timing of the downlink HARQ-ACK between the base station and the UE under the situation that the duplex mode of two or more cells are set to FDD and TDD, respectively, to perform different carrier merging and joint operations. .
  • a method of setting a downlink HARQ-ACK timing when a Pcell and a Scell having different duplex modes are configured in a terminal includes: receiving, by the terminal, a downlink signal through a Scell; and The terminal includes applying the HARQ-ACK timing configured to be used in the duplex mode of the Pcell as the HARQ-ACK timing for the received downlink signal.
  • a method for configuring a downlink HARQ-ACK timing in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD includes: receiving, by the terminal, a downlink signal through an FDD Scell; and When the UE has a switch point periodicity interval of K in the downlink combining set for each uplink subframe configured in the TDD Pcell with the HARQ-ACK timing for the downlink signal, the downlink per uplink subframe And applying HARQ-ACK timing with the K added to the combined set.
  • a method for configuring a downlink HARQ-ACK timing in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD comprises the steps of: receiving, by the terminal, a downlink signal through an FDD Scell; And applying, by the UE, HARQ-ACK timing added to one uplink subframe within a switch point periodicity set in a TDD Pcell as an HARQ-ACK timing for the downlink signal.
  • a method for configuring a downlink HARQ-ACK timing in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD comprises the steps of: receiving, by the terminal, a downlink signal through an FDD Scell; And the UE applies HARQ-ACK timing added according to downlink subframe order in which the downlink signal is transmitted to a downlink combined set for each uplink subframe of a TDD Pcell as the HARQ-ACK timing for the downlink signal. It includes a step.
  • a method for configuring a downlink HARQ-ACK timing when a Pcell and a Scell having different duplex modes are configured to a UE may include transmitting a downlink signal to the UE by a Scell. And receiving an HARQ-ACK for the downlink signal from the terminal in an uplink subframe to which HARQ-ACK timing applied for use in a duplex mode of the Pcell is applied.
  • a method for setting a downlink HARQ-ACK timing in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD is performed by the base station transmitting a downlink signal to an FDD Scell.
  • HARQ-ACK in which K is added to the downlink combination set for each uplink subframe when the switch point periodicity interval is K in the downlink combination set for each uplink subframe configured in the TDD Pcell.
  • a method for configuring a downlink HARQ-ACK timing in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD may include transmitting a downlink signal to a user equipment through an FDD Scell. And receiving a HARQ-ACK for the downlink signal from the terminal in an uplink subframe to which HARQ-ACK timing added to one uplink subframe in a switch point periodicity set in a TDD Pcell is applied. It includes a step.
  • a method for setting a downlink HARQ-ACK timing in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD is performed by the base station transmitting a downlink signal to an FDD Scell. And the downlink signal from the terminal in an uplink subframe applying HARQ-ACK timing added according to the downlink subframe order in which the downlink signal is transmitted to a downlink combined set for each uplink subframe of a TDD Pcell. Receiving a HARQ-ACK for the.
  • a terminal for setting downlink HARQ-ACK timing when Pcells and Scells having different duplex modes are configured for the UE includes: a receiving unit for receiving a downlink signal to the Scell, and the received down And a controller for applying the HARQ-ACK timing configured to be used in the duplex mode of the Pcell as the HARQ-ACK timing for the link signal.
  • a terminal for setting downlink HARQ-ACK timing in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD includes: a receiving unit receiving a downlink signal through an FDD Scell, and the downlink signal When the switch point periodicity interval is K in the downlink combining set for each uplink subframe configured in the TDD Pcell with HARQ-ACK timing for the K, add K to the downlink combining set for each uplink subframe. And a control unit for applying one HARQ-ACK timing.
  • a terminal for setting downlink HARQ-ACK timing in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD includes: a receiving unit receiving a downlink signal through an FDD Scell, and the downlink signal And a controller for applying the HARQ-ACK timing added to one uplink subframe within the switch point periodicity set in the TDD Pcell as the HARQ-ACK timing for the TDD Pcell.
  • a terminal for setting downlink HARQ-ACK timing in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD includes: a receiving unit receiving a downlink signal through an FDD Scell, and the downlink signal And a controller for applying the HARQ-ACK timing added according to the downlink subframe order in which the downlink signal is transmitted to the downlink combination set for each uplink subframe of the TDD Pcell as the HARQ-ACK timing for the TDD Pcell.
  • a base station for setting downlink HARQ-ACK timing when configuring Pcells and Scells having different duplex modes to the UE may include a transmitter and a Pcell for transmitting downlink signals to the Scell. And a receiver for receiving a HARQ-ACK for the downlink signal from the terminal in an uplink subframe to which HARQ-ACK timing applied for use in a duplex mode, and a controller for controlling the transmitter and the receiver.
  • a base station for setting downlink HARQ-ACK timing in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD is transmitted to a TDD Pcell.
  • the switch point periodicity interval is K in the downlink combination set for each uplink subframe
  • an uplink sub-subject to which HARQ-ACK timing to which K is added is added to the downlink combination set for each uplink subframe.
  • a receiver for receiving a HARQ-ACK for the downlink signal from the terminal in a frame, and a controller for controlling the transmitter and the receiver.
  • a base station for setting downlink HARQ-ACK timing in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD is transmitted to a TDD Pcell.
  • a receiver for receiving a HARQ-ACK for the downlink signal from the terminal in an uplink subframe to which HARQ-ACK timing is added to one uplink subframe within a set switch point periodicity, and the transmitter And a control unit for controlling the receiving unit.
  • a base station for setting downlink HARQ-ACK timing in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD is a transmitter that transmits a downlink signal to an FDD Scell to a UE.
  • HARQ-ACK timing is added according to the downlink subframe order in which the downlink signal is transmitted to the downlink combined set for each uplink subframe, HARQ-ACK for the downlink signal is received from the terminal.
  • a control unit for controlling the transmitter and the receiver.
  • transmission efficiency of HARQ-ACK can be improved in applying DL HARQ-ACK timing in different duplex modes of FDD and TDD joint operations and FDD and TDD carrier merging.
  • FIG. 1 is a diagram illustrating small cell deployment according to an embodiment.
  • FIG. 2 is a diagram illustrating a small cell deployment scenario.
  • 3 to 6 show detailed scenarios in small cell deployment.
  • FIG. 7 is a diagram illustrating various scenarios of carrier aggregation.
  • FIG. 8 illustrates a TDD UL-DL configuration on a TDD frame structure.
  • FIG. 9 is a diagram illustrating DL combining for TDD DL HARQ-ACK transmission under the TDD UL-DL configuration of FIG. 8.
  • FIG. 10 is a diagram illustrating a reference TDD UL-DL configuration.
  • FIG. 11 is a diagram showing a timing relationship by method a-2-1) according to an embodiment of the present invention.
  • Tcell ULDD configuration 4 according to method a-2-1 according to an embodiment of the present invention is a Pcell.
  • FIG. 14 is a view showing a timing relationship by method a-2-2) according to an embodiment of the present invention.
  • Tcell ULDD configuration 4 according to method a-2-2 according to an embodiment of the present invention is a Pcell.
  • 17 to 23 illustrate a case where a TDD Cell and an FDD Cell having respective TDD UL-DL configurations 0 to 6 are CA for each TDD-FDD joint operation.
  • 24 is a diagram illustrating an operation of a terminal according to an embodiment of the present invention.
  • 25 is a diagram illustrating the operation of a base station according to an embodiment of the present invention.
  • FIG. 26 illustrates an operation of a terminal implementing a-2-1 (detail method 1) according to an embodiment of the present invention.
  • FIG. 27 is a diagram illustrating the operation of a base station implementing a-2-1 (detailed method 1) according to an embodiment of the present invention.
  • FIG. 28 is a diagram illustrating an operation of a terminal that implements DL HARQ-ACK timing for an FDD Scell in a specific uplink subframe as shown in FIGS. 12 and 13 according to an embodiment of the present invention.
  • FIG. 29 illustrates an operation of a base station for implementing DL HARQ-ACK timing for an FDD Scell in a specific uplink subframe as shown in FIGS. 12 and 13 according to an embodiment of the present invention.
  • FIG. 30 is a diagram illustrating an operation of a terminal implementing method a-2-2 according to an embodiment of the present invention.
  • 31 is a diagram illustrating the operation of a base station implementing method a-2-2 according to an embodiment of the present invention.
  • 32 is a diagram illustrating a configuration of a base station according to another embodiment.
  • 33 is a diagram illustrating a configuration of a user terminal according to another embodiment.
  • the wireless communication system in the present invention is widely deployed to provide various communication services such as voice, packet data, and the like.
  • the wireless communication system includes a user equipment (UE) and a base station (base station, BS, or eNB).
  • a user terminal is a generic concept meaning a terminal in wireless communication.
  • user equipment (UE) in WCDMA, LTE, and HSPA, as well as mobile station (MS) in GSM, user terminal (UT), and SS It should be interpreted as a concept that includes a subscriber station, a wireless device, and the like.
  • the user terminal may be abbreviated as a terminal.
  • the user terminal may be referred to as a terminal for short.
  • a base station or a cell generally refers to a station that communicates with a user terminal, and includes a Node-B, an evolved Node-B, an Sector, a Site, and a BTS.
  • Other terms such as a base transceiver system, an access point, a relay node, a remote radio head (RRH), a radio unit (RU), and a small cell may be called.
  • RRH remote radio head
  • RU radio unit
  • a base station or a cell is interpreted in a comprehensive sense to indicate some areas or functions covered by a base station controller (BSC) in CDMA, a Node-B in WCDMA, an eNB or a sector (site) in LTE, and the like. It is meant to cover various coverage areas such as mega cell, macro cell, micro cell, pico cell, femto cell and relay node, RRH, RU, small cell communication range.
  • BSC base station controller
  • the base station may be interpreted in two senses. i) the device providing the megacell, the macrocell, the microcell, the picocell, the femtocell, the small cell in relation to the wireless area, or ii) the wireless area itself. In i) all devices which provide a given wireless area are controlled by the same entity or interact with each other to cooperatively configure the wireless area to direct the base station.
  • the base station may indicate the radio area itself to receive or transmit a signal from a viewpoint of a user terminal or a neighboring base station.
  • megacells macrocells, microcells, picocells, femtocells, small cells, RRHs, antennas, RUs, low power nodes (LPNs), points, eNBs, transmit / receive points, transmit points, and receive points are collectively referred to as base stations. do.
  • the user terminal and the base station are two transmitting and receiving entities used to implement the technology or technical idea described in this specification in a comprehensive sense and are not limited by the terms or words specifically referred to.
  • the user terminal and the base station are two types of uplink or downlink transmitting / receiving subjects used to implement the technology or the technical idea described in the present invention, and are used in a generic sense and are not limited by the terms or words specifically referred to.
  • the uplink (Uplink, UL, or uplink) refers to a method for transmitting and receiving data to the base station by the user terminal
  • the downlink (Downlink, DL, or downlink) means to transmit and receive data to the user terminal by the base station It means the way.
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • OFDM-FDMA OFDM-TDMA
  • OFDM-CDMA OFDM-CDMA
  • One embodiment of the present invention can be applied to resource allocation in the fields of asynchronous wireless communication evolving to LTE and LTE-Advanced through GSM, WCDMA, HSPA, and synchronous wireless communication evolving to CDMA, CDMA-2000 and UMB.
  • the present invention should not be construed as being limited or limited to a specific wireless communication field, but should be construed as including all technical fields to which the spirit of the present invention can be applied.
  • the uplink transmission and the downlink transmission may use a time division duplex (TDD) scheme that is transmitted using different times, or may use a frequency division duplex (FDD) scheme that is transmitted using different frequencies.
  • TDD time division duplex
  • FDD frequency division duplex
  • a standard is configured by configuring uplink and downlink based on one carrier or a pair of carriers.
  • the uplink and the downlink include a Physical Downlink Control CHannel (PDCCH), a Physical Control Format Indicator CHannel (PCFICH), a Physical Hybrid ARQ Indicator CHannel (PHICH), a Physical Uplink Control CHannel (PUCCH), an Enhanced Physical Downlink Control CHannel (EPDCCH), and the like.
  • Control information is transmitted through the same control channel, and data is configured by a data channel such as a physical downlink shared channel (PDSCH) and a physical uplink shared channel (PUSCH).
  • PDSCH physical downlink shared channel
  • PUSCH physical uplink shared channel
  • control information may also be transmitted using an enhanced PDCCH (EPDCCH or extended PDCCH).
  • EPDCCH enhanced PDCCH
  • extended PDCCH extended PDCCH
  • a cell means a component carrier having a coverage of a signal transmitted from a transmission / reception point or a signal transmitted from a transmission point or a transmission / reception point, and the transmission / reception point itself. Can be.
  • a wireless communication system to which embodiments are applied may be a coordinated multi-point transmission / reception system (CoMP system) or a coordinated multi-antenna transmission scheme in which two or more transmission / reception points cooperate to transmit a signal.
  • antenna transmission system a cooperative multi-cell communication system.
  • the CoMP system may include at least two multiple transmission / reception points and terminals.
  • the multiple transmit / receive point is at least one having a base station or a macro cell (hereinafter referred to as an eNB) and a high transmission power or a low transmission power in a macro cell region, which is wired controlled by an optical cable or an optical fiber to the eNB. May be RRH.
  • an eNB a base station or a macro cell
  • a high transmission power or a low transmission power in a macro cell region which is wired controlled by an optical cable or an optical fiber to the eNB. May be RRH.
  • downlink refers to a communication or communication path from a multiple transmission / reception point to a terminal
  • uplink means a communication or communication path from a terminal to multiple transmission / reception points.
  • a transmitter may be part of multiple transmission / reception points, and a receiver may be part of a terminal.
  • a transmitter may be part of a terminal, and a receiver may be part of multiple transmission / reception points.
  • a situation in which a signal is transmitted and received through a channel such as a PUCCH, a PUSCH, a PDCCH, an EPDCCH, and a PDSCH may be expressed in the form of 'sending and receiving a PUCCH, a PUSCH, a PDCCH, an EPDCCH, and a PDSCH.
  • a description of transmitting or receiving a PDCCH or transmitting or receiving a signal through the PDCCH may be used as a meaning including transmitting or receiving an EPDCCH or transmitting or receiving a signal through the EPDCCH.
  • the physical downlink control channel described below may mean PDCCH or EPDCCH, and may also be used to include both PDCCH and EPDCCH.
  • the EPDCCH which is an embodiment of the present invention, may be applied to the portion described as the PDCCH, and the EPDCCH may be applied to the portion described as the EPDCCH as an embodiment of the present invention.
  • high layer signaling described below includes RRC signaling for transmitting RRC information including an RRC parameter.
  • An eNB which is an embodiment of a base station, performs downlink transmission to terminals.
  • the eNB includes downlink control information and an uplink data channel (eg, a physical downlink shared channel (PDSCH), which is a primary physical channel for unicast transmission, and scheduling required to receive the PDSCH.
  • a physical downlink control channel (PDCCH) for transmitting scheduling grant information for transmission on a physical uplink shared channel (PUSCH) may be transmitted.
  • PUSCH physical uplink shared channel
  • Low power nodes represent nodes that use lower transmit (Tx) power than typical macro nodes.
  • a small cell can be constructed using a low power remote radio head (RRH), which is a geographically dispersed antenna within macro cell coverage.
  • RRH remote radio head
  • the macro cell and the RRH cell are constructed to be scheduled under the control of one base station.
  • an ideal backhaul is required between the macro cell node and the RRH.
  • An ideal backhaul means a backhaul that exhibits very high throughput and very low latency, such as optical fiber, dedicated point-to-point connections using LOS microwaves (Line Of Sight microwave).
  • non-ideal backhaul backhaul that exhibits relatively low throughput and large delay, such as digital subscriber line (xDSL) and Non LOS microwaves.
  • the plurality of serving cells may be merged through the single base station-based CA technology described above to provide a service to the terminal. That is, a plurality of serving cells may be configured for a terminal in a Radio Resource Control (RRC) connected state, and when an ideal backhaul is established between the macro cell node and the RRH, the macro cell And the RRH cell may be configured with serving cells to provide a service to the terminal.
  • RRC Radio Resource Control
  • the terminal may have only one RRC connection with the network.
  • one serving cell is a Non-Access Stratum (hereinafter referred to as 'NAS') mobility information (eg, TAI: Tracking). Area Identity) and one serving cell provides security input in RRC connection reset / handover.
  • 'NAS' Non-Access Stratum
  • TAI Tracking
  • Area Identity eg., Area Identity
  • Pcell primary cell
  • Scells Secondary Cells
  • Scells may be configured as Serving Cells together with Pcells according to UE capabilities.
  • the present invention provides a joint operation between FDD and TDD to a UE belonging to a corresponding base station when a small cell and an arbitrary cell / base station / RRH / antenna / RU support different duplexes, that is, FDD and TDD in a multi-cell structure.
  • An operation method and apparatus of a terminal for enabling an operation), a base station method using the method, and an apparatus thereof are provided.
  • each duplex mode is used in macro cell and small cell and any cell / base station / RRH / antenna / RU, and supports CA and joint operation of macro cell and small cell, and dual connectivity.
  • the present invention relates to a method of designating a secondary cell.
  • FIG. 1 is a diagram illustrating small cell deployment according to an embodiment.
  • FIG. 1 illustrates a configuration in which a small cell and a macro cell coexist, and in FIGS. 2 to 3 below, whether macro coverage is present and whether the small cell is for outdoor or indoor.
  • the deployment of the small cell is divided in more detail according to whether or not to use the same frequency spectrum as the macro in terms of spectrum. The detailed configuration of the scenario will be described with reference to FIGS. 2 to 6.
  • FIG. 2 is a diagram illustrating a small cell deployment scenario.
  • FIG. 2 shows a typical representative configuration for the scenario of FIGS. 3 to 6.
  • 2 illustrates a small cell deployment scenario and includes scenarios # 1, # 2a, # 2b and # 3.
  • 200 denotes a macro cell
  • 210 and 220 denote small cells.
  • the overlapping macro cell may or may not exist.
  • Coordination may be performed between the macro cell 200 and the small cells 210 and 220, and coordination may also be performed between the small cells 210 and 220.
  • the overlapped areas of 200, 210, and 220 may be bundled into clusters.
  • 3 to 6 show detailed scenarios in small cell deployment.
  • Scenario # 1 is a co-channel deployment scenario of a small cell and a macro cell in the presence of an overhead macro and is an outdoor small cell scenario.
  • 310 denotes a case where both the macro cell 311 and the small cell are outdoors, and 312 indicates a small cell cluster. Users are distributed both indoors and outdoors.
  • Solid lines connecting the small cells in the small cell 312 mean a backhaul link within a cluster.
  • the dotted lines connecting the base station of the macro cell and the small cells in the cluster mean a backhaul link between the small cell and the macro cell.
  • Scenario 2a is a deployment scenario in which the small cell and the macro use different frequency spectrums in the presence of an overlay macro and an outdoor small cell scenario. Both macro cell 411 and small cells are outdoors and 412 indicates a small cell cluster. Users are distributed both indoors and outdoors.
  • Solid lines connecting the small cells in the small cell 412 mean a backhaul link within a cluster.
  • the dotted lines connecting the base station of the macro cell and the small cells in the cluster mean a backhaul link between the small cell and the macro cell.
  • Scenario 2b is a deployment scenario in which the small cell and the macro use different frequency spectrums in the presence of an overlay macro and an indoor small cell scenario.
  • Macro cell 511 is outdoors, small cells are all indoors, and 512 indicates a small cell cluster. Users are distributed both indoors and outdoors.
  • Solid lines connecting the small cells in the small cell 512 mean a backhaul link within a cluster.
  • the dotted lines connecting the base station of the macro cell and the small cells in the cluster mean a backhaul link between the small cell and the macro cell.
  • Scenario 3 is an indoor small cell scenario in the absence of coverage of macros. 612 indicates a small cell cluster. In addition, small cells are all indoors, and users are distributed both indoors and outdoors.
  • Solid lines connecting the small cells in the small cell 612 mean a backhaul link within a cluster.
  • the dotted lines connecting the base station of the macro cell and the small cells in the cluster mean a backhaul link between the small cell and the macro cell.
  • the frequencies F1 and F2 used in the various small cell scenarios of FIGS. 1 and 2 to 6 described above may be frequencies supporting the same duplex mode, or F1 and F2 may have different duplex modes.
  • F1 may be a frequency that supports the FDD mode
  • F2 may be a frequency that supports the TDD mode or vice versa.
  • FIG. 7 is a diagram illustrating various scenarios of carrier aggregation.
  • the corresponding F1 and F2 may be frequencies supporting the same duplex mode, or the frequencies supporting different duplex modes may be considered.
  • F1 and F2 cells are co-located and overlapped under almost the same coverage.
  • Two layers are scenarios that provide sufficient coverage and mobility, and scenarios in which aggregation between overlapped F1 and F2 cells are possible.
  • F1 and F2 cells co-locate and overlap, but the coverage of F2 is smaller than that of F1.
  • F1 has sufficient coverage, mobility support is performed based on F1 coverage, and
  • F2 is a scenario used for improving throughput, and a scenario in which overlapping F1 and F2 cells are merged is possible.
  • F1 and F2 cells co-locate, but F2 antennas are directed to the cell edge to increase cell edge throughput.
  • Mobility support is performed based on F1 coverage, where F1 has sufficient coverage but F2 is potentially a coverage hole, and F1 and F2 cells on the same eNB can be merged where coverage overlaps. That is the scenario.
  • Scenario 740 is a scenario in which F1 has macro coverage and RRH at F2 is used to improve throughput in hot spot areas. Mobility support is performed based on F1 coverage and is based on F1 macro cell. This is a scenario in which F2 RRHs cells can be merged together.
  • F1 and F2 cells in the same eNB is a scenario that can be merged where the coverage overlap.
  • the terminal when the terminal configures dual connectivity, forms an RRC connection with the terminal, terminates the base station or S1-MME providing a cell (for example, Pcell) that is the basis of handover, and mobility to the core network.
  • a base station serving as an anchor is described as a master base station or a first base station.
  • the master base station or the first base station may be a base station providing a macro cell, and may be a base station providing any one small cell in a dual connectivity situation between the small cells.
  • a base station that is distinguished from a master base station in a dual connectivity environment and provides additional radio resources to a terminal is described as a secondary base station or a second base station.
  • the first base station (master base station) and the second base station (secondary base station) may provide at least one cell to the terminal, respectively, and the first base station and the second base station may be connected through an interface between the first base station and the second base station. have.
  • a cell associated with the first base station may be referred to as a macro cell, and a cell associated with the second base station may be referred to as a small cell for clarity.
  • a cell associated with the first base station may also be described as a small cell.
  • the macro cell may mean each of at least one or more cells, and may be described as representing a whole cell associated with the first base station.
  • the small cell may also mean each of at least one or more cells, and may also be described as representing a whole cell associated with the second base station.
  • the cell may be a cell associated with the first base station.
  • the cell of the second base station may be described as another small cell or another small cell.
  • the macro cell may be associated with the master base station or the first base station
  • the small cell may be associated with the secondary base station or the second base station
  • a base station or a second base station may be associated with the macro cell, and the present invention also applies to a situation where the master base station or the first base station is associated with the small cell.
  • carrier aggregation in each of FDD and TDD duplex modes is considered, and in case of carrier aggregation in the same mode as in each of FDD and TDD May be configured to distinguish component carriers (component carriers, CCs) as follows.
  • the primary cell Primary Cell, Pcell
  • Primary Cell Primary Cell
  • the terminal When the CA is configured, the terminal has one RRC connection with the network, and one serving cell is NAS mobility information at the time of RRC connection establishment / re-establishment / handover. (NAS mobility information), and one serving cell provides a security input during RRC connection reset / handover.
  • NAS mobility information NAS mobility information
  • Such cells are referred to as primary cells.
  • the carrier corresponding to the Pcell is a downlink primary component carrier (DL PCC)
  • DL PCC downlink primary component carrier
  • UPCC uplink primary component carrier
  • the Pcell can only be changed into a handover procedure, and the Pcell is used for transmission of the PUCCH. Also, unlike Scells, Pcells cannot be de-activated. In addition, re-establishment is triggered when the Pcell experiences RLF (Radio Link Failure), and no reset is performed when the Scell experiences RLF. NAS information is also obtained from the Pcell.
  • RLF Radio Link Failure
  • Scells may be configured in the form of a set of serving cells together with a Pcell.
  • the carrier corresponding to the Scell in the downlink is a DL Secondary Component Carrier (DL SCC), and the carrier corresponding to the Scell in the uplink is an Uplink Secondary Component Carrier (UL SCC). to be.
  • DL SCC DL Secondary Component Carrier
  • UL SCC Uplink Secondary Component Carrier
  • a set of serving cells configured in one terminal always consists of one Pcell and one or more Scells.
  • the number of serving cells that can be configured depends on the aggregation capability of the terminal.
  • Reconfiguration, addition and removal of Scells can be performed by the RRC, and the RRC is used for use with the target Pcell during intra-LTE handover in LTE. You can reset, add, or remove scells.
  • RRC signaling is used to transmit all required system information of the Scell. In the connected mode, the terminal does not need to directly obtain broadcast system information from Scells.
  • FIG. 8 is a diagram illustrating a TDD UL-DL configuration on a TDD frame structure.
  • D is a downlink subframe
  • U is an uplink subframe
  • S is a special subframe.
  • FIG. 9 illustrates a downlink association for TDD DL HARQ-ACK transmission under the TDD UL-DL configuration of FIG. 8.
  • 9 relates to DL HARQ-ACK timing for TDD and indicates a connection relationship between (n-k) th DL PDSCHs for HARQ-ACK transmission transmitted in subframe n.
  • a value in FIG. 9 means a set that k can have.
  • FIG. 10 is a diagram illustrating a reference TDD UL-DL configuration.
  • FIG. 10 illustrates DL scheduling and DL HARQ used in TDD according to different TDD UL-DL configurations configured for Pcell and Scell in different TDD UL-DL configurations during inter-band TDD carrier aggregation
  • the TDD DL reference TDD UL-DL configuration is defined for the -ACK timing.
  • carrier aggregation is considered in each of FDD and TDD duplex modes, and in the related art, merging between carriers having different duplex modes, such as FDD and TDD, is proposed in the present invention.
  • the implementation of the joint operation is not considered.
  • the UE when considering a joint operation of FDD and TDD and carrier aggregation of FDD and TDD, which are different duplex modes, the UE relates to DL HARQ-ACK timing.
  • An operation method and an operation method in the base station are proposed.
  • the operation at the base station may be a method of setting an operation for the terminal from the base station.
  • the present invention proposes a method of operating a terminal in a corresponding case, an operation setting method for a terminal from a base station, and a device and a base station apparatus of a terminal related thereto.
  • the present invention first proposes a method for a DL HARQ-ACK timing that may vary depending on a duplex mode of a cell designated as Pcell and Scell during a TDD-FDD joint operation.
  • the UE procedure for the DL HARQ-ACK timing in the TDD-FDD joint operation is as follows.
  • TDD is Pcell and FDD is Scell.
  • the DL HARQ-ACK timing for the FDD Scell is k + 4 by the grant received in the existing k th subframe.
  • the DL HARQ-ACK timing transmitted at the first time was used. Therefore, when the TDD Pcell UL is designated, HARQ-ACK and PUCCH for the PDSCH transmitted to the FDD Scell cannot be transmitted when the k + 4th timing is not set to the UL subframe in the corresponding TDD Pcell. do. Accordingly, there is a need for a method for improving DL HARQ-ACK timing for a corresponding FDD Scell for a UE capable of TDD-FDD joint operation.
  • Method a-1 is a DL HARQ-ACK timing in which the TDD Pcell uses DL HARQ-ACK timing for the FDD Scell when the UE configured the TDD Pcell adds the FDD Scell to the Scell for the TDD-FDD joint operation and the CA. May be considered. That is, regardless of the configuration of transmitting the corresponding HARQ-ACK with the k + 4th UL for the PDSCH received the grant in the kth subframe configured in the existing FDD-FDD CA of the FDD Scell, the TDD Pcell The TDD DL HARQ-ACK timing associated with the TDD UL-DL subframe configuration used is applied to the FDD Scell. This is applied to FDD Scell in the same way as TDD Scell is added.
  • the scheme of applying the DL HARQ-ACK timing of the TDD Pcell may be additionally expressed in two forms.
  • One may consider a method of setting DL HARQ-ACK timing of an FDD Scell according to a reference configuration used in a TDD Pcell.
  • the TDD UL-DL configuration having the smallest UL subframe is set as a reference setting among the TDD UL-DL configurations considered as the TDD Pcell, under the same switch-point periodicity criterion.
  • a method for setting DL HARQ-ACK timing may be considered.
  • the TDD UL-DL configuration 5 may be considered to be set independently when setting the reference through the switch point periodicity.
  • TDD UL-DL configurations 0, 1, 2, and 6 having the same switch point periodicity of 5 ms refer to TDD UL-DL configuration 2 having the smallest number of UL subframes.
  • a TDD UL-DL configuration 3 or 4 having the same switch point periodicity of 10 ms may be set as a reference configuration, and the TDD UL-DL configuration 4 having the smallest number of UL subframes may be set as a reference configuration.
  • the TDD UL-DL configuration 5 having the smallest number of UL subframes may be set as the reference setting.
  • the TDD UL-DL configuration 5 when setting according to the reference, the TDD UL-DL configuration 5 may be set as the reference configuration for the TDD UL-DL configuration 5 having the smallest number of UL subframes.
  • HARQ-ACK and PUCCH due to the UL subframe of the TDD Pcell does not exist at the k + 4th by a grant received in the kth subframe for the FDD Scell addressed in the present invention. It is possible to prevent the situation that cannot be transmitted.
  • Method a-2 follows the DL HARQ-ACK timing according to the TDD UL-DL configuration set in the TDD Pcell in transmitting the HARQ-ACK for the DL transmitted in the FDD Scell under the specific TDD UL-DL configuration set in the specific TDD Pcell.
  • the FDD Scell DL subframe that is aligned with the UL subframe of the TDD Pcell there is no DL HARQ-ACK timing information since the corresponding subframe was a UL subframe in the existing TDD Pcell.
  • the present invention defines a HARQ-ACK timing of the additional DL for the DL of the corresponding FDD Scell as a method for solving this.
  • the DL HARQ-ACK timing to the TDD Pcell for the DL subframe of the FDD Scell is indicated by PDCCH / EPDCCH detection for DL SPS release in the (n-4) th subframe or corresponding.
  • PDCCH / EPDCCH detection for DL SPS release in the (n-4) th subframe or corresponding In order to have a DL HARQ-ACK timing in a TDD Pcell for an FDD Scell configured to be transmitted in at least nth subframe, even for the transmission of the fastest HARQ-ACK for the PDSCH transmission indicated by the detection of a PDCCH Set it.
  • Method a-2 can also be considered two methods: One sets the DL HARQ-ACK timing of the FDD Scell according to the TDD UL-DL reference configuration used in the TDD Pcell. That is, the timing of the UL subframe for transmitting HARQ-ACK may not exist for the DL PDSCH transmitted in the FDD Scell DL subframe index having the same subframe index as the UL subframe index of the reference configuration used for the TDD Pcell. Accordingly, since the DL subframe cannot be transmitted in the FDD Scell, a method of defining DL HARQ-ACK timing of an additional FDD Scell for this purpose may be considered.
  • the TDD UL-DL configuration having the smallest UL subframe based on the same switch point periodicity among the TDD UL-DL configurations considered as the TDD Pcell is set as the reference setting, and the UL subframe of the reference setting is used.
  • the timing of the UL subframe for transmitting the HARQ-ACK may not exist for the DL PDSCH transmitted in the FDD Scell DL subframe index having the same subframe index as the index. Therefore, since the DL subframe cannot be transmitted in the FDD Scell, a method of defining DL HARQ-ACK timing of the additional FDD Scell for this purpose may be considered.
  • the TDD UL-DL configuration 5 when setting the reference through the switch point periodicity, the TDD UL-DL configuration 5 may be considered to be set independently.
  • TDD UL-DL configuration 2 having the smallest number of UL subframes may be set as a reference setting.
  • the TDD UL-DL configuration 4 having the smallest number of UL subframes may be set as the reference setting.
  • the TDD UL-DL configuration 5 having the smallest number of UL subframes may be set as the reference setting.
  • the TDD UL-DL configuration 5 when setting according to the reference, may be set as the reference configuration for the TDD UL-DL configuration 5 having the smallest number of UL subframes.
  • Method a-2-1 Detailed Method 1: A method of adding TDD UL-DL subframe switch periodicity to each TDD UL-DL configuration for each DL association set.
  • the following embodiment defines a DL HARQ-ACK timing relationship for transmitting the HARQ-ACK of the DL for the FDD Scell according to the UL-DL subframe configuration of the TDD Pcell on the TDD Pcell. That is, as shown in FIG. 11, a DL HARQ-ACK timing relation from the TDD Pcell to the FDD Scell is proposed for the case where the TDD is Pcell and the FDD is Scell at the time of the TDD-FDD joint operation and CA.
  • FIG. 11 is a diagram showing a timing relationship by method a-2-1) according to an embodiment of the present invention.
  • FIG. 11 shows downlink association set index K: ⁇ k 0 , k 1 ,...
  • k M-1 ⁇ for TDD-FDD Joint Operation for TDD-FDD Joint Operation.
  • FIG. 11 illustrates the downlink combining set for the TDD-FDD joint operation by adding timing for the FDD-Scell when compared to the downlink combining set of FIG. 9. Portions highlighted in FIG. 11 (parts indicated by underline and bold) are timings for the FDD-Scell added in the present invention.
  • TDD DL HARQ-ACK timing information for different FDD Scells in each TDD UL-DL configuration may be independent, and in the present specification, for convenience, rather than presenting the relationships of the seven combinations in a table, as shown in FIG. 11. I would like to present it as a table.
  • the above example shows HARQ-ACK for FDD Scell on TDD UL subframes for the portion requiring definition of additional DL HARQ-ACK timing transmitted in FDD Scell in TDD UL subframe under method a-2-1). This is an example that can be distributed evenly or equally.
  • the switch point periodicity interval is K in the downlink combination set for each uplink subframe configured in the TDD Pcell as a characteristic of the timing for the FDD-Scell added in FIG. 11, the downlink per uplink subframe This is the HARQ-ACK timing of adding the K to the combined set. That is, in the embodiment of the switch point periodicity 5 (UL / DL Conf. 0, 1, 2), since K is 5, "5 (FDD Scell)" is added to each uplink subframe. Next, in the embodiment of the switch point periodicity 10 (UL / DL Conf. 3, 4, 5, 6), since the K is 10, "10 (FDD Scell)" is added to each uplink subframe.
  • a method of configuring DL HARQ-ACK timing for an FDD Scell may be considered such that HARQ-ACK for the corresponding FDD Scell is allocated to a specific TDD UL subframe.
  • Tcell ULDD configuration 4 according to method a-2-1 according to an embodiment of the present invention is a Pcell.
  • 12 and 13 both the downlink for TDD-FDD coupling joint operation set K: ⁇ k 0, k 1 , ..., k M-1 ⁇ (Downlink association set index K: ⁇ k 0, k 1,. .., k M-1 ⁇ for TDD-FDD Joint Operation).
  • 12 shows method a-2-1-a
  • FIG. 13 shows method a-2-1-b.
  • a method of configuring DL HARQ-ACK timing may be considered to allocate HARQ-ACK for a DL PDSCH of a corresponding FDD Scell to a specific TDD subframe.
  • Can be. 12 and 13 illustrate the TDD UL-DL configuration 4 as an example, but may be applied to other TDD UL-DL configurations with the same principle.
  • the TDD UL-DL configuration 0,1,3,6 is applied to the TDD UL-DL configuration 0,1,3,6 so as to be distinguished from the proposed TDD UL-DL configuration 0,1,3,6.
  • a method of setting the DL HARQ-ACK timing of the FDD Scell for the DL configuration 0,1,3,6 may be added.
  • FIG. 12 it can be seen that “10, 9 (FDD Scell)” is added to the second subframe.
  • HARQ-ACK timing added to one uplink subframe (eg, subframe 3) within the switch point periodicity may be applied.
  • Method a-2-2 Detailed Method 2: Regardless of the TDD UL-DL subframe switch periodicity, the TDD DL HARQ-ACK timing for the FDD Scell is determined first in the time domain. This is a method of adding to the TDD UL-DL configuration of each DL association set so that the FDD Scell DL transmitted first for a frame can be allocated.
  • Figure 14 is a view showing a timing relationship by method a-2-2) according to an embodiment of the present invention.
  • Figure 14 is a combined downlink for TDD-FDD joint operations and CA set K: ⁇ k 0, k 1 , ..., k M-1 ⁇ (Downlink association set index K: ⁇ k 0, k 1, .. , k M-1 ⁇ for TDD-FDD Joint Operation).
  • FIG. 14 illustrates the downlink combining set for the TDD-FDD joint operation in addition to the timing for the FDD-Scell when compared to the downlink combining set of FIG. 9. Portions highlighted in FIG. 14 (parts indicated by underline and bold) are timing for the FDD-Scell added in the present invention.
  • TDD DL HARQ-ACK timing information for different FDD Scells in each TDD UL-DL configuration may be independent, and in the present specification, as shown in FIG. I would like to present it as a table.
  • the above example performs HARQ-ACK on the FDD Scell on the TDD UL subframes for the portion requiring the definition of additional DL HARQ-ACK timing transmitted in the FDD Scell in the TDD UL subframe under method a-2-2). This is an example that can be distributed evenly or equally.
  • the UE adds HARQ-ACK timing according to downlink subframe order in which the downlink signal is transmitted to a downlink combined set for each uplink subframe of a TDD Pcell as HARQ-ACK timing for the downlink signal.
  • TDD UL-DL configuration in case of TDD UL-DL configuration 0, “5 (FDD Scell)” is added to uplink subframes 2, 3, 4, 7, 8, and 9, respectively, which is a sub-transmitted downlink signal.
  • HARQ-ACK timing is applied according to the frame order.
  • the method a-2-2) similarly provides another additional embodiment in which the DL HARQ- for the FDD Scell is allocated such that the HARQ-ACK for the corresponding FDD Scell is allocated to a specific TDD UL subframe.
  • a method of setting the ACK timing may be considered.
  • 15 and 16 illustrate a case in which Tcell ULDD configuration 4 according to method a-2-2 according to an embodiment of the present invention is a Pcell.
  • 15 and 16 both the downlink for TDD-FDD coupling joint operations and CA set K: ⁇ k 0, k 1 , ..., k M-1 ⁇ (Downlink association set index K: ⁇ k 0, k 1 , ..., k M-1 ⁇ for TDD-FDD Joint Operation).
  • 15 shows method a-2-2-a
  • FIG. 16 shows method a-2-2-b.
  • TDD UL-DL configuration 4 is used as a Pcell
  • a method of configuring DL HARQ-ACK timing to allocate HARQ-ACK for DL PDSCH of a corresponding FDD Scell mentioned above to a specific TDD subframe is described. May be considered.
  • 15 and 16 illustrate the TDD configuration 4 as an example, but may be applied to other TDD UL-DL configurations 0, 1, 3, and 6 with the same principle.
  • a specific Pcell UL subframe may be overloaded.
  • the transmission rate of the DL traffic transmitted to the TDD Scell may be reduced due to errors that may occur due to a bad channel environment in the transmission of HARQ-ACK transmitted in the corresponding Pcell UL subframe. . Accordingly, there is a need for a method for improving a DL HARQ-ACK timing for a corresponding TDD Scell for a UE capable of a TDD-FDD joint operation.
  • Method b-1) When the UE configured the FDD Pcell adds the SDD for the TDD Scell to the TDD-FDD joint operation and the CA, the HARQ-ACK timing used for the DL HARQ-ACK timing for the TDD Scell is used. Methods to be applied may be considered. In other words, regardless of the TDD DL HARQ-ACK timing associated with the TDD UL-DL subframe configuration of the TDD Scell, the DL HARQ-ACK timing used by the FDD Pcell is applied to the TDD Scell.
  • the DL HARQ-ACK timing used in the FDD is set to transmit the corresponding HARQ-ACK to the k + 4th UL for the PDSCH received the grant in the kth subframe, as if the FDD Scell was added to the TDD Scell. Is applied in a way. In the case of applying the method, it is possible to prevent a phenomenon in which the performance of the system is highly dependent on the detection probability of the PUCCH transmitted in a specific subframe without HARQ-ACK and PUCCH in a specific UL subframe raised in the present invention. Can be.
  • the scenario to which the present invention is applied is a scenario used in the operation of the TDD-FDD joint operation, when CA can be used through two or more component carriers in UL and CA cannot be used in UL. All are applicable to the case of using the component carrier.
  • 17 to 23 show examples of a case where a TDD Cell and an FDD Cell having respective TDD UL-DL configurations 0 to 6 are CA for each TDD-FDD joint operation.
  • the shaded information on the downlink in the FDD Cell means that additional transmission of HARQ-ACK timing for downlink transmission to the corresponding FDD Cell DL is required. Detailed description of corresponding HARQ-ACK timing is described in detail in the present invention.
  • FIG. 17 is a diagram illustrating a case in which a TDD Cell and an FDD Cell having a TDD UL-DL configuration of 0 according to an embodiment of the present invention become a CA. Subframes 2, 3, 4, 7, 8, and 9 of the FDD correspond to FIG. It is suggested that additional transmission of HARQ-ACK timing for downlink transmission to the FDD Cell DL is required.
  • FIG. 18 is a diagram illustrating a case in which a TDD Cell and an FDD Cell having a TDD UL-DL configuration of 1 according to an embodiment of the present invention become CA.
  • Subframes 2, 3, 7, and 8 of the FDD are referred to as corresponding FDD Cell DL. This suggests that additional transmission of HARQ-ACK timing for outgoing downlink transmission is necessary.
  • FIG. 19 is a diagram illustrating a case where a TDD Cell and an FDD Cell having a TDD UL-DL configuration of 2 according to an embodiment of the present invention become CA. Subframes 2 and 7 of the FDD transmit downlink transmissions to the corresponding FDD Cell DL. It is suggested that additional transmission of HARQ-ACK timing is needed.
  • FIG. 20 is a diagram illustrating a case where a TDD Cell and an FDD Cell having a TDD UL-DL configuration of 3 according to an embodiment of the present invention become CA. Subframes 2, 3, and 4 of the FDD are sent to the corresponding FDD Cell DL. This suggests that additional transmission of HARQ-ACK timing for link transmission is necessary.
  • FIG. 21 is a diagram illustrating a case in which a TDD Cell and an FDD Cell having a TDD UL-DL configuration of 4 become CA according to an embodiment of the present invention.
  • Subframes 2 and 3 of the FDD transmit downlink transmissions to a corresponding FDD Cell DL. It is suggested that additional transmission of HARQ-ACK timing is needed.
  • FIG. 22 illustrates a case in which a TDD Cell and an FDD Cell having a TDD UL-DL configuration of 5 according to an embodiment of the present invention become CA.
  • Subframe 2 of FDD corresponds to downlink transmission sent to a corresponding FDD Cell DL. It is suggested that transmission of HARQ-ACK timing is additionally necessary.
  • FIG. 23 is a diagram illustrating a case in which a TDD Cell and an FDD Cell having a TDD UL-DL configuration of 6 according to an embodiment of the present invention become CA. Subframes 2, 3, 4, 7, and 8 of the FDD correspond to the corresponding FDD Cells. It is suggested that additional transmission of HARQ-ACK timing for downlink transmission to the DL is needed.
  • 24 is a diagram illustrating an operation of a terminal according to an embodiment of the present invention.
  • the UE of FIG. 24 is a process in which the UE sets downlink HARQ-ACK timing in the TDD-FDD joint operation and the CA, and the UE receives the downlink signal through the Scell (S2410).
  • the terminal applies the HARQ-ACK timing configured to be used in the duplex mode of the Pcell as the HARQ-ACK timing of the received downlink signal (S2420).
  • the terminal transmits an HARQ-ACK for the received downlink signal in an uplink subframe corresponding to the applied HARQ-ACK timing (S2430).
  • the step of applying S2420 may include HARQ-ACK timing configured to be used in the FDD Pcell as the HARQ-ACK timing of the Scell. In one embodiment to apply the. Detailed examples thereof have been described in Method b-1.
  • the step of applying the S2420 is to use the HARQ-ACK timing set to be used in the TDD Pcell as the HARQ-ACK timing of the Scell.
  • applying the S2420 may apply an additional HARQ-ACK timing to the HARQ-ACK timing of the Scell as the HARQ-ACK timing. Can be.
  • Embodiments for a) may be the above-described method a-1, method a-2, method a-2-1, method a-2-2, and the like.
  • 25 is a diagram illustrating the operation of a base station according to an embodiment of the present invention.
  • FIG. 25 is a diagram illustrating a process of setting a downlink HARQ-ACK timing by a base station in a TDD-FDD joint operation.
  • the base station transmits a downlink signal to the Scell to the terminal (S2510). Thereafter, the terminal applies the HARQ-ACK timing configured to be used in the duplex mode of the Pcell as the HARQ-ACK timing for the received downlink signal (S2520).
  • the base station receives the HARQ-ACK for the downlink signal from the terminal in an uplink subframe to which the HARQ-ACK timing applied for use in the duplex mode of the Pcell is applied (S2530).
  • the uplink subframe is HARQ-ACK timing configured to be used in the FDD Pcell as the HARQ-ACK timing of the TDD Scell.
  • it is an uplink subframe to which is applied. Detailed examples thereof have been described in Method b-1.
  • the uplink subframe uses the HARQ-ACK timing configured to be used by the TDD Pcell as the HARQ-ACK timing of the FDD Scell. It may be an applied uplink subframe.
  • the uplink subframe applies an additional HARQ-ACK timing to the HARQ-ACK timing of the TDD Pcell as the HARQ-ACK timing of the FDD Scell. It may be an applied uplink subframe.
  • Embodiments for a) may be the above-described method a-1, method a-2, method a-2-1, method a-2-2, and the like.
  • FIG. 26 illustrates an operation of a terminal implementing a-2-1 (detail method 1) according to an embodiment of the present invention.
  • the terminal receives the downlink signal to the Scell in the process of setting the downlink HARQ-ACK timing.
  • the switch point periodicity interval is K in the downlink combining set for each uplink subframe configured in the TDD Pcell at the HARQ-ACK timing for the downlink signal
  • the terminal corresponds to the downlink combining set for each uplink subframe.
  • HARQ-ACK timing with K added is applied (S2620).
  • the terminal transmits an HARQ-ACK for the received downlink signal in an uplink subframe corresponding to the applied HARQ-ACK timing (S2630).
  • FIG. 27 is a diagram illustrating the operation of a base station implementing a-2-1 (detailed method 1) according to an embodiment of the present invention.
  • FIG. 27 is a diagram illustrating a process of setting a downlink HARQ-ACK timing by a base station in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD.
  • the base station transmits a downlink signal to the Scell to the terminal (S2710).
  • the UE adds the K to the downlink combination set for each uplink subframe when the switch point periodicity interval is K in the downlink combination set for each uplink subframe configured in the TDD Pcell.
  • the timing is applied as the HARQ-ACK timing for the received downlink signal (S2720).
  • the base station receives HARQ-ACK for the downlink signal from the terminal in an uplink subframe to which the HARQ-ACK timing is applied (S2730).
  • FIG. 28 is a diagram illustrating an operation of a terminal that implements DL HARQ-ACK timing for an FDD Scell in a specific uplink subframe as shown in FIGS. 12 and 13 according to an embodiment of the present invention.
  • the UE receives the downlink signal to the Scell in the process of setting the downlink HARQ-ACK timing (S2810).
  • the terminal applies HARQ-ACK timing added to one uplink subframe within a switch point periodicity set in a TDD Pcell as HARQ-ACK timing for the downlink signal (S2820).
  • the terminal transmits an HARQ-ACK for the received downlink signal in an uplink subframe corresponding to the applied HARQ-ACK timing (S2830).
  • FIG. 29 illustrates an operation of a base station for implementing DL HARQ-ACK timing for an FDD Scell in a specific uplink subframe as shown in FIGS. 12 and 13 according to an embodiment of the present invention.
  • FIG. 29 is a diagram illustrating a process of setting a downlink HARQ-ACK timing by a base station in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD.
  • the base station transmits a downlink signal to the Scell to the terminal (S2910).
  • the UE applies HARQ-ACK timing for the downlink signal received HARQ-ACK timing added to one uplink subframe within the switch point periodicity set in the TDD Pcell (S2920).
  • the base station receives HARQ-ACK for the downlink signal from the terminal in an uplink subframe to which the HARQ-ACK timing is applied (S2930).
  • FIG. 30 is a diagram illustrating an operation of a terminal implementing method a-2-2 according to an embodiment of the present invention.
  • the UE receives the downlink signal to the Scell in the process of setting the downlink HARQ-ACK timing (S3010).
  • the UE applies HARQ-ACK timing added according to the downlink subframe order in which the downlink signal is transmitted to a downlink combined set for each uplink subframe of a TDD Pcell as the HARQ-ACK timing for the downlink signal. (S3020).
  • the terminal transmits an HARQ-ACK for the received downlink signal in an uplink subframe corresponding to the applied HARQ-ACK timing (S3030).
  • HARQ-ACK timing for the downlink signal is distributed to the two or more uplink subframes in FIG. 14 and FIG. We have seen in the related description.
  • 31 is a diagram illustrating the operation of a base station implementing method a-2-2 according to an embodiment of the present invention.
  • FIG. 31 is a diagram illustrating a process of setting a downlink HARQ-ACK timing by a base station in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD.
  • the base station transmits a downlink signal to the Scell to the terminal (S3110).
  • the UE applies HARQ-ACK timing added according to the downlink subframe order in which the downlink signal is transmitted to the downlink combined set for each uplink subframe of the TDD Pcell (S3120).
  • the base station receives the HARQ-ACK for the downlink signal from the terminal in an uplink subframe to which the HARQ-ACK timing is applied (S3130).
  • HARQ-ACK timing for the downlink signal is distributed to the two or more uplink subframes in FIG. 14 and FIG. We have seen in the related description.
  • 32 is a diagram illustrating a configuration of a base station according to another embodiment.
  • the base station 3200 includes a controller 3210, a transmitter 3220, and a receiver 3230.
  • the control unit 3210 is responsible for the overall operation of the base station according to the DL HARQ-ACK timing in consideration of the joint operation of FDD and TDD and the carrier merging of FDD and TDD, which are different duplex modes required for carrying out the present invention. To control.
  • the transmitter 3220 and the receiver 3230 are used to transmit and receive signals, messages, and data necessary for carrying out the above-described present invention.
  • the base station 3200 sets the downlink HARQ-ACK timing in the TDD-FDD joint operation.
  • the transmitter 3220 transmits a downlink signal to the Scell to the UE
  • the receiver 3230 is a duplex of the Pcell.
  • Receive HARQ-ACK for the downlink signal from the terminal in the uplink subframe to which the HARQ-ACK timing applied to use in the mode.
  • the controller 3210 controls the transmitter 3220 and the receiver 3230.
  • the uplink subframe is HARQ-ACK timing configured to be used in the FDD Pcell as the HARQ-ACK timing of the TDD Scell.
  • it is an uplink subframe to which is applied. Detailed examples thereof have been described in Method b-1.
  • the uplink subframe uses the HARQ-ACK timing configured to be used by the TDD Pcell as the HARQ-ACK timing of the FDD Scell. According to an embodiment, it is an applied uplink subframe. In another embodiment, when the Pcell is set to TDD and the Scell is set to FDD, the uplink subframe applies an additional HARQ-ACK timing to the HARQ-ACK timing of the TDD Pcell as the HARQ-ACK timing of the FDD Scell. In one embodiment, it is an uplink subframe.
  • Embodiments for a) may be the above-described method a-1, method a-2, method a-2-1, method a-2-2, and the like.
  • the base station 3200 sets downlink HARQ-ACK timing in a mobile communication network in which Pcell is set to TDD and Scell is set to FDD, and the transmitter 3220 transmits a downlink signal to an FDD Scell to a terminal.
  • 3210 controls the transmitter 3220 and the receiver 3230.
  • the receiving unit 3230 determines the uplink subframe when the switch point periodicity interval is K in the downlink combining set for each uplink subframe configured in the TDD Pcell.
  • the HARQ-ACK for the downlink signal is received from the UE in an uplink subframe in which the HARQ-ACK timing to which the K is added to each downlink combined set is applied.
  • K is 5 or 10 has been described in the description of FIGS. 11 and a-2-1.
  • the receiver 3230 is one up within the switch point periodicity set in the TDD Pcell.
  • HARQ-ACK for the downlink signal is received from the terminal.
  • the switch point periodicity interval is 10 subframes, the case in which one uplink subframe is subframe 2 has been described with reference to FIG. 12 and related descriptions.
  • the receiver 3230 When applying the method a-2-2, the receiver 3230 adds HARQ-ACK timing according to the downlink subframe order in which the downlink signal is transmitted to the downlink combined set for each uplink subframe of the TDD Pcell. Receives HARQ-ACK for the downlink signal from the terminal in the uplink subframe to which is applied.
  • HARQ-ACK timing for the downlink signal is distributed to the two or more uplink subframes in FIG. 14 and FIG. We have seen in the related description.
  • 33 is a diagram illustrating a configuration of a user terminal according to another embodiment.
  • a user terminal 3300 includes a receiver 3330, a controller 3310, and a transmitter 3320.
  • the receiver 3330 receives downlink control information, data, and a message from a base station through a corresponding channel.
  • controller 3310 is the overall operation of the UE according to the DL HARQ-ACK timing in consideration of the joint operation of the FDD and TDD and the carrier merging of the FDD and TDD, which are different duplex modes required for carrying out the present invention described above. To control.
  • the transmitter 3320 transmits uplink control information, data, and messages to the base station through a corresponding channel.
  • the receiver 3330 receives the downlink signal through the Scell.
  • the controller 3310 applies the HARQ-ACK timing configured to be used in the duplex mode of the Pcell as the HARQ-ACK timing of the received downlink signal.
  • the transmitter 3320 transmits the HARQ-ACK for the received downlink signal in an uplink subframe corresponding to the HARQ-ACK timing applied by the controller 3310.
  • the controller 3310 uses the HARQ-ACK timing of the TDD Scell to be used in the FDD Pcell. In one embodiment to apply the. Detailed examples thereof have been described in Method b-1.
  • the controller 3310 uses the HARQ-ACK timing configured to be used in the TDD Pcell as the HARQ-ACK timing of the FDD Scell. Applicable In another embodiment, when the Pcell is set to TDD and the Scell is set to FDD, the controller 3310 applies an additional HARQ-ACK timing to the HARQ-ACK timing of the TDD Pcell as the HARQ-ACK timing of the FDD Scell. can do.
  • Embodiments for a) may be the above-described method a-1, method a-2, method a-2-1, method a-2-2, and the like.
  • the UE 3300 sets downlink HARQ-ACK timing in a mobile communication network in which the Pcell is set to TDD and the Scell is set to FDD, and the receiver 3330 receives the downlink signal through the FDD Scell.
  • method a-2-1 when the control unit 3310 has a switch point periodicity interval of K in the downlink combination set for each uplink subframe configured in the TDD Pcell with the HARQ-ACK timing for the downlink signal, HARQ-ACK timing with the K added to the downlink combination set for each uplink subframe is applied.
  • K is 5 or 10 has been described in the description of FIGS. 11 and a-2-1.
  • the controller 3310 may switch point configured in the TDD Pcell as the HARQ-ACK timing for the downlink signal.
  • the HARQ-ACK timing added to one uplink subframe in the switch point periodicity is applied.
  • the switch point periodicity interval is 10 subframes, the case in which one uplink subframe is subframe 2 has been described with reference to FIG. 12 and related descriptions.
  • the controller 3310 uses the downlink sub-transmitted downlink signal in the downlink combined set for each uplink subframe of the TDD Pcell at the HARQ-ACK timing for the downlink signal.
  • the HARQ-ACK timing added according to the frame order is applied.
  • HARQ-ACK timing for the downlink signal is distributed to the two or more uplink subframes in FIG. 14 and FIG. We have seen in the related description.
  • the terminal transmits a downlink signal to an Scell.
  • the applying step may be performed by applying an additional HARQ-ACK timing to the HARQ-ACK timing of the TDD Pcell as the HARQ-ACK timing of the FDD Scell. It provides a method characterized in that the step.
  • the present invention provides a method for setting a downlink HARQ-ACK timing when the base station configures the Pcell and the Scell having a different duplex mode, the base station, the base station transmitting the downlink signal to the Scell to the terminal; And receiving an HARQ-ACK for the downlink signal from the terminal in an uplink subframe to which HARQ-ACK timing applied for use in a duplex mode of a Pcell is applied.
  • the uplink subframe applies HARQ-ACK timing to the HARQ-ACK timing of the TDD Pcell as the HARQ-ACK timing of the FDD Scell.
  • an uplink subframe is provided.
  • the present invention provides a terminal for setting downlink HARQ-ACK timing when a Pcell and a Scell having different duplex modes are configured for a terminal, the terminal comprising: a receiving unit for receiving a downlink signal to the Scell; And a controller configured to apply the HARQ-ACK timing configured to be used in the duplex mode of the Pcell as the HARQ-ACK timing for the received downlink signal.
  • the controller when the Pcell is set to FDD and the Scell is set to TDD, the controller provides a HARQ-ACK timing configured to be used in the FDD Pcell as the HARQ-ACK timing of the TDD Scell. do.
  • the controller when the Pcell is set to TDD and the Scell is set to FDD, the controller provides a terminal device characterized by applying the HARQ-ACK timing configured to be used in the TDD Pcell as the HARQ-ACK timing of the FDD Scell. .
  • the controller applies an additional HARQ-ACK timing to the HARQ-ACK timing of the TDD Pcell as the HARQ-ACK timing of the FDD Scell. Provide the device.
  • the present invention provides a terminal for setting downlink HARQ-ACK timing in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD, the terminal comprising: a receiver configured to receive a downlink signal through an FDD Scell; And a downlink combining set for each uplink subframe when the switch point periodicity interval is K in the downlink combining set for each uplink subframe configured in the TDD Pcell as the HARQ-ACK timing for the downlink signal. It provides a terminal device including a control unit for applying the HARQ-ACK timing added to the K. In addition, the present invention provides a terminal device, characterized in that K is 5 or 10.
  • the present invention provides a terminal for setting downlink HARQ-ACK timing in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD, the terminal comprising: a receiver configured to receive a downlink signal through an FDD Scell; And a controller for applying HARQ-ACK timing added to one uplink subframe within a switch point periodicity set in a TDD Pcell as the HARQ-ACK timing for the downlink signal.
  • the present invention provides a terminal device, characterized in that the one uplink subframe is a subframe 2 when the switch point periodicity interval is 10 subframes.
  • the present invention provides a terminal for setting downlink HARQ-ACK timing in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD. And a control unit for applying the HARQ-ACK timing added according to the downlink subframe order in which the downlink signal is transmitted to the downlink combined set for each uplink subframe of the TDD Pcell as the HARQ-ACK timing for the downlink signal. It provides a terminal device including. In addition, according to the present invention, when two or more uplink subframes exist within a switch point periodicity of the TDD Pcell, HARQ-ACK timing for the downlink signal is distributed to the two or more uplink subframes. A terminal device is provided.
  • the present invention provides a base station for setting the downlink HARQ-ACK timing when configuring the Pcell and Scell having a different duplex mode to the terminal, the base station comprising: a transmitter for transmitting a downlink signal to the Scell to the terminal; A receiver for receiving a HARQ-ACK for the downlink signal from the terminal in an uplink subframe to which HARQ-ACK timing applied for use in a duplex mode of a Pcell is applied; And it provides a base station apparatus including a control unit for controlling the transmitter and the receiver.
  • the uplink subframe is an uplink subframe to which HARQ-ACK timing is set to be used in the FDD Pcell as the HARQ-ACK timing of the TDD Scell. It provides a base station apparatus characterized in that the frame. Also, in the present invention, when the Pcell is set to TDD and the Scell is set to FDD, the uplink subframe is an uplink subframe to which the HARQ-ACK timing configured to be used in the TDD Pcell is used as the HARQ-ACK timing of the FDD Scell. A base station apparatus is provided.
  • the uplink subframe applies HARQ-ACK timing to the HARQ-ACK timing of the TDD Pcell as the HARQ-ACK timing of the FDD Scell.
  • a base station apparatus which is an uplink subframe.
  • the present invention provides a base station for setting downlink HARQ-ACK timing in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD, the base station comprising: a transmitter for transmitting a downlink signal to an FDD Scell to a terminal; If the switch point periodicity interval is K in the downlink combining set for each uplink subframe configured in the TDD Pcell, HARQ-ACK timing is applied by adding the K to the downlink combining set for each uplink subframe.
  • a receiver configured to receive an HARQ-ACK for the downlink signal from the terminal in an uplink subframe; And it provides a base station apparatus including a control unit for controlling the transmitter and the receiver.
  • the present invention provides a base station apparatus, characterized in that K is 5 or 10.
  • the present invention provides a base station for setting downlink HARQ-ACK timing in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD, the base station comprising: a transmitter for transmitting a downlink signal to an FDD Scell to a terminal; A receiver for receiving a HARQ-ACK for the downlink signal from the terminal in an uplink subframe to which HARQ-ACK timing is added to one uplink subframe within a switch point periodicity set in a TDD Pcell; And it provides a base station apparatus including a control unit for controlling the transmitter and the receiver.
  • the present invention also provides a base station apparatus when the switch point periodicity interval is 10 subframes, the one uplink subframe is subframe two.
  • the present invention provides a base station for setting downlink HARQ-ACK timing in a mobile communication network in which a Pcell is set to TDD and an Scell is set to FDD, the base station comprising: a transmitter for transmitting a downlink signal to an FDD Scell to a terminal; HARQ for the downlink signal from the UE in an uplink subframe in which HARQ-ACK timing added according to the downlink subframe order in which the downlink signal is transmitted is applied to a downlink combined set for each uplink subframe of a TDD Pcell.
  • a receiving unit for receiving an ACK And it provides a base station apparatus including a control unit for controlling the transmitter and the receiver.
  • HARQ-ACK timing for the downlink signal is distributed to the two or more uplink subframes.
  • a base station apparatus is provided.
  • the embodiments of the present invention discussed so far describe operations of a terminal and a base station that implement DL HARQ-ACK timing in consideration of a joint operation of FDD and TDD, which are different duplex modes, and carrier aggregation of FDD and TDD. Suggesting.

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

Abstract

La présente invention concerne un procédé pour établir une synchronisation HARQ-ACK de liaison descendante, et un appareil associé. Le procédé pour établir, au moyen d'un terminal, une synchronisation HARQ-ACK de liaison descendante lorsque le terminal consiste en une Pcell et une Scell ayant des modes de duplexage différents, selon un mode de réalisation de la présente invention, comprend les étapes consistant à : recevoir, au moyen du terminal, un signal de liaison descendante au moyen de la Scell ; et à appliquer, au moyen du terminal, une synchronisation HARQ-ACK établie pour être utilisée dans un mode de duplexage de la Pcell en tant que synchronisation HARQ-ACK pour le signal de liaison descendante reçu.
PCT/KR2014/008708 2013-09-26 2014-09-18 Procédé pour établir une synchronisation harq-ack de liaison descendante et appareil associé Ceased WO2015046811A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201480053584.7A CN105594147A (zh) 2013-09-26 2014-09-18 下行链路harq-ack时序设置方法及为此的装置
US15/024,873 US10432361B2 (en) 2013-09-26 2014-09-18 Method for establishing downlink HARQ-ACK timing and apparatus therefor
US16/542,513 US10742364B2 (en) 2013-09-26 2019-08-16 Method for establishing downlink HARQ-ACK timing and apparatus therefor

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR10-2013-0114763 2013-09-26
KR20130114763 2013-09-26
KR10-2013-0138703 2013-11-15
KR20130138703 2013-11-15
KR1020140027531A KR101561838B1 (ko) 2013-09-26 2014-03-10 다운링크 harq-ack 타이밍 설정 방법 및 이를 위한 장치
KR10-2014-0027531 2014-03-10

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US15/024,873 A-371-Of-International US10432361B2 (en) 2013-09-26 2014-09-18 Method for establishing downlink HARQ-ACK timing and apparatus therefor
US16/542,513 Continuation US10742364B2 (en) 2013-09-26 2019-08-16 Method for establishing downlink HARQ-ACK timing and apparatus therefor

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CN105406891A (zh) * 2015-11-28 2016-03-16 广东欧珀移动通信有限公司 一种通信终端的载波聚合模式设定方法及通信终端
WO2018021881A1 (fr) * 2016-07-29 2018-02-01 삼성전자 주식회사 Procédé et appareil de remise d'informations d'état de canal dans un système de communication mobile
US12184427B2 (en) 2016-07-29 2024-12-31 Samsung Electronics Co., Ltd Method and apparatus for transmitting and receiving downlink data corresponding to resource allocation information and indicator in mobile communication system

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