WO2015012593A1 - Procédé et appareil d'agrégation de porteuses - Google Patents

Procédé et appareil d'agrégation de porteuses Download PDF

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Publication number
WO2015012593A1
WO2015012593A1 PCT/KR2014/006704 KR2014006704W WO2015012593A1 WO 2015012593 A1 WO2015012593 A1 WO 2015012593A1 KR 2014006704 W KR2014006704 W KR 2014006704W WO 2015012593 A1 WO2015012593 A1 WO 2015012593A1
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WO
WIPO (PCT)
Prior art keywords
scell
base station
pcell
index
carrier
Prior art date
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PCT/KR2014/006704
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English (en)
Korean (ko)
Inventor
노민석
최우진
Original Assignee
주식회사 케이티
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 KR1020140007158A external-priority patent/KR20150012986A/ko
Priority claimed from KR1020140015093A external-priority patent/KR101615804B1/ko
Application filed by 주식회사 케이티 filed Critical 주식회사 케이티
Priority to CN201480042329.2A priority Critical patent/CN105409139B/zh
Priority to US14/897,233 priority patent/US9900924B2/en
Publication of WO2015012593A1 publication Critical patent/WO2015012593A1/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
    • H04L5/0001—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
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
    • 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
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections

Definitions

  • the present invention relates to a method and apparatus for performing carrier aggregation, and more particularly, the duplex mode of two or more cells is set to Frequency Division Duplex (FDD) and Time Division Duplex (TDD), respectively, in different situations or small.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • 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 technique for controlling a carrier aggregation and a joint operation for performing transmission and reception in a plurality of base stations or heterogeneous networks.
  • a duplex mode of two or more cells is set to a frequency division duplex (FDD) and a time division duplex (TDD), respectively.
  • FDD frequency division duplex
  • TDD time division duplex
  • a carrier merging and a joint operation are performed to perform scheduling by merging carriers, thereby improving communication efficiency, and to provide an operation process of the base station and a terminal and an apparatus for implementing the same. do.
  • carrier aggregation and joint operation are performed to perform scheduling by merging carriers when supporting carrier aggregation and joint operation of macro cell and small cell and dual connectivity.
  • To improve the communication efficiency by performing to provide an operation process of the base station and the terminal for this purpose and an apparatus for implementing the same.
  • the method according to an embodiment of the present invention to perform the carrier merge the index of at least one SCell controlled by the first base station and the index of at least one SCell controlled by the second base station Receiving, and performing the function of the PCell by using one of the SCell of the SCell of the second base station.
  • the function of the Pcell may include a function of transmitting an uplink control channel (PUCCH).
  • the SCell performing the function of the Pcell may be set so that cross carrier scheduling cannot be performed.
  • the function of the Pcell may include at least one of a cross carrier scheduling function or a function of receiving a random access response message in a non-competition based random access procedure.
  • Receiving the index of the SCell may comprise the step of independently setting so that the SCell index of the first base station and the SCell index of the second base station overlap.
  • Receiving the index of the SCell may include setting without distinguishing so that the SCell index of the first base station and the SCell index of the second base station do not overlap.
  • a method of performing carrier aggregation by a first base station includes setting an index of at least one SCell controlled by the first base station and an index of at least one SCell controlled by a second base station. Setting to perform the function of the PCell by using one of the SCells of the base station 2 and transmitting information indicating to perform the function of the PCell by using one of the SCells of the SCell of the second base station to the terminal Steps.
  • the function of the Pcell may include a function of receiving an uplink control channel (PUCCH).
  • the method may further include setting a SCell that performs the function of the Pcell such that it cannot be cross-carrier scheduled.
  • the function of the Pcell may include any one or more of a cross carrier scheduling function or a function of transmitting a random access response message in a non-competition based random access procedure.
  • the setting of the index of the SCell may include independently setting the SCell index of the first base station to overlap with the SCell index of the second base station.
  • the setting of the index of the SCell may include setting without distinction such that the SCell index of the first base station and the SCell index of the second base station do not overlap.
  • a terminal for performing carrier aggregation includes a transmitter for transmitting uplink to a first base station and / or a second base station, a receiver for receiving downlink from a first base station and / or a second base station, And a control unit for receiving an index of at least one SCell controlled by the first base station and an index of at least one SCell controlled by the second base station, wherein the control unit uses one of the SCells of the second base station to control the PCell. And controlling the transmitter and the receiver to perform a function.
  • the function of the Pcell may be that the transmitter transmits an uplink control channel (PUCCH).
  • PUCCH uplink control channel
  • SCell performing the function of the Pcell may be set so that cross-carrier scheduling cannot be performed.
  • the function of the Pcell may include at least one of a cross carrier scheduling function or a function of receiving a random access response message in a non-competition based random access procedure.
  • the controller may independently set the SCell index of the first base station and the SCell index of the second base station to overlap.
  • the controller may be set without discriminating so that the SCell index of the first base station and the SCell index of the second base station do not overlap.
  • a base station performing carrier aggregation may include a transmitter for transmitting a downlink to a terminal, a receiver for receiving an uplink from a terminal, and an index of one or more SCells controlled by the base station and the base station. And a controller configured to set an index of at least one SCell controlled by a second base station, and to perform a function of a PCell by using one of the SCells of the second base station. The transmitter and the receiver are controlled to transmit information indicating to perform the function of the PCell to the terminal using one of the SCell.
  • the function of the Pcell may be that the receiver receives an uplink control channel (PUCCH).
  • PUCCH uplink control channel
  • the control unit may set the SCell performing the function of the Pcell such that cross carrier scheduling cannot be performed.
  • the function of the Pcell may include any one or more of a cross carrier scheduling function or a function of transmitting a random access response message in a non-competition based random access procedure.
  • the controller may independently set the SCell index of the base station and the SCell index of the second base station to overlap. In addition, the controller may distinguish the SCell index of the base station from the overlapping SCell index of the second base station.
  • the carrier in a second duplex mode different from the first duplex mode of the PCell connected to the terminal under a different duplex mode Transmitting information set to a first SCell to the terminal, and performing functions of the terminal and the PCell using the first SCell.
  • the function of the PCell may be any one or more of transmission and reception of a PUCCH, cross carrier scheduling, or transmission and reception of a random access response.
  • the first SCell may be configured to self-carrier scheduling.
  • the first SCell may be configured not to be cross-carrier scheduled.
  • the first SCell may have the lowest SCell index.
  • an index of one or more SCells of the first duplex mode and an index of one or more SCells of the second duplex mode may be independently set.
  • the method may further include setting an index of at least one SCell of the first duplex mode and an index of at least one SCell of the second duplex mode without distinction.
  • one carrier of the second duplex mode sets a second PCell distinguished from the PCell
  • one carrier of the first duplex mode sets a second SCell distinguished from the first SCell. It may include.
  • a method of performing carrier aggregation by a terminal includes information on setting a carrier of a second duplex mode different from a first duplex mode of a PCell connected to a base station under a different duplex mode to the first SCell. Receiving from a base station, and performing the functions of the base station and the PCell by using the first SCell.
  • the function of the PCell may be any one or more of transmission and reception of a PUCCH, cross carrier scheduling, or transmission and reception of a random access response.
  • the first SCell may be self carrier scheduled.
  • the first SCell may not be cross-carrier scheduled.
  • the first SCell may have the lowest SCell index.
  • the indexes of one or more SCells of the first duplex mode and the indexes of one or more SCells of the second duplex mode may be independently set.
  • an index of one or more SCells of the first duplex mode and an index of one or more SCells of the second duplex mode may be set without distinction.
  • One carrier of the second duplex mode establishes a second PCell distinct from the PCell, and one carrier of the first duplex mode further comprises establishing a second SCell distinct from the first SCell Can be.
  • a base station performing carrier aggregation may include a receiver for receiving uplink from a terminal under a different duplex mode, and a carrier of a second duplex mode different from the first duplex mode of a PCell to which the terminal is connected. And a control unit for generating information set to 1 SCell, and a transmission unit for transmitting the generated information to the terminal, wherein the control unit performs the functions of the terminal and PCell by using the first SCell. It characterized in that to control.
  • the controller may perform any one or more of transmission and reception of PUCCH, cross carrier scheduling, and transmission and reception of random access response using the first SCell.
  • the first SCell may be configured to self-carrier scheduling.
  • the first SCell may be configured not to be cross-carrier scheduled.
  • the first SCell may have the lowest SCell index.
  • the controller may independently set an index of one or more SCells of the first duplex mode and an index of one or more SCells of the second duplex mode.
  • the controller may set an index of at least one SCell of the first duplex mode and an index of at least one SCell of the second duplex mode without distinction.
  • the controller may set a second PCell in which one carrier of the second duplex mode is distinguished from the PCell, and set a second SCell in which one carrier of the first duplex mode is distinguished from the first SCell.
  • a terminal performing carrier aggregation may include a transmitter for transmitting an uplink to a base station under a different duplex mode, and a carrier of a second duplex mode different from a first duplex mode of a PCell connected to the base station. And a receiving unit for receiving information set to 1 SCell from the base station, and a control unit for controlling the transmitting unit and the receiving unit to perform the functions of the base station and the PCell using the first SCell.
  • the controller may perform any one or more of transmission and reception of PUCCH, cross carrier scheduling, and transmission and reception of random access response using the first SCell.
  • the first SCell may be self-carrier scheduled.
  • the first SCell may not be cross-carrier scheduled.
  • the first SCell may have the lowest SCell index.
  • the controller may independently set indexes of at least one SCell of the first duplex mode and indexes of at least one SCell of the second duplex mode.
  • the controller may be configured to set the index of at least one SCell of the first duplex mode and the index of at least one SCell of the second duplex mode without distinction.
  • the controller may set a second PCell in which one carrier of the second duplex mode is distinguished from the PCell, and set a second SCell in which one carrier of the first duplex mode is distinguished from the first SCell.
  • the SCell may be configured when the base station considers the duplex mode of the FDD and TDD joint operation and the carrier merging of the FDD and TDD to the terminal. Can be implemented.
  • SCell Secondary cell
  • SCell can be designated in case of supporting carrier aggregation and joint operation and dual connectivity between the macro cell and the small cell.
  • 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 is a diagram illustrating a process of configuring a SCell by a base station under different duplex modes according to an embodiment of the present invention.
  • FIG. 9 is a diagram for setting a SCell that performs a PCell function when applying Embodiment 2 and Embodiment A of the present invention.
  • FIG. 9 is a diagram for setting a SCell that performs a PCell function when applying Embodiment 2 and Embodiment A of the present invention.
  • FIG. 10 is a diagram for setting a SCell that performs a PCell function when applying Embodiment 2 and Embodiment B of the present invention.
  • FIG. 10 is a diagram for setting a SCell that performs a PCell function when applying Embodiment 2 and Embodiment B of the present invention.
  • FIG. 11 is a diagram of setting a SCell that performs a PCell function when applying Embodiment 3 of the present invention.
  • FIG. 11 is a diagram of setting a SCell that performs a PCell function when applying Embodiment 3 of the present invention.
  • FIG. 12 is a diagram of setting a SCell performing a PCell function when applying Embodiment 3 of the present invention.
  • FIG. 13 is a diagram illustrating an operation in a terminal according to an embodiment of the present invention.
  • FIG. 14 illustrates a configuration of a base station according to an embodiment of the present invention.
  • 15 is a diagram illustrating a configuration of a user terminal according to an embodiment of the present invention.
  • 16 is a diagram illustrating a process of controlling a SCell by a terminal in a small cell environment according to another embodiment of the present invention.
  • FIG. 17 is a diagram illustrating a process of controlling a SCell by a base station in a small cell environment according to another embodiment of the present invention.
  • FIGS. 18 and 19 are diagrams illustrating an example in which an SCell configured to perform a function of a Pcell is applied by applying an embodiment of the present invention to M-1 to M-4.
  • 20 and 21 illustrate an example in which an SCell configured to perform a function of a Pcell is applied by applying an embodiment of the present invention to N-1 to N-4.
  • 22 and 23 are diagrams illustrating an example of independently setting an index.
  • 24 is a diagram illustrating a configuration of a user terminal according to an embodiment of the present invention.
  • 25 is a diagram illustrating a configuration of a base station according to an embodiment of the present invention.
  • 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 could 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 UE in a Radio Resource Control (RRC) connected state, and when an ideal backhaul is established between a macro cell node and an RRH, 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
  • PCell primary cell
  • SCells Secondary Cells
  • SCells may be configured as a serving cell together with a PCell.
  • 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.
  • the present invention relates to a method and apparatus for operating a terminal, and a base station method and apparatus using the method.
  • each duplex mode is used in macro cell and small cell and any cell / base station / RRH / antenna / RU, regardless of the duplex mode, and CA and joint operation between macro cell and small cell, and dual connectivity. In the case of supporting the 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.
  • FIG. 2 is a diagram illustrating a small cell deployment scenario.
  • FIG. 2 shows a typical representative configuration for the scenario of FIG. 3.
  • 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 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 an 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.
  • the macro cell 511 is outdoors, the 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 area. Mobility support is performed based on F1 coverage and with F1 macro cell. This is a scenario in which F2 RRHs cells can be merged.
  • 750 is a scenario in which frequency selective repeaters are deployed for coverage expansion of one carrier, similar to the scenario of 720.
  • F1 and F2 cells in the same eNB is a scenario that can be merged where the coverage overlap.
  • the terminal configures dual connectivity, forms an RRC connection with the terminal, terminates the base station or S1-MME providing a cell (for example, a 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 in which 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.
  • PCell 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 may be changed only by a handover procedure, and the PCell is used for transmission of the PUCCH.
  • PCell unlike SCells, PCell cannot be de-activated.
  • re-establishment is triggered when the PCell experiences the RLF, and no reset occurs when the SCell experiences the RLF.
  • NAS information is also obtained from PCell.
  • SCells Secondary Cells
  • SCells may be configured in the form of a set of serving cells together with a PCell.
  • the carrier corresponding to the SCell in downlink is a downlink secondary component carrier (DL SCC)
  • the carrier corresponding to the SCell in the uplink is an uplink secondary component carrier (UL SCC). to be.
  • DL SCC downlink 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 may be performed by RRC, and RRC may be used with a 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 the SCells.
  • carrier aggregation in each mode of FDD and TDD duplex modes is considered, and aggregation between carriers having different duplex modes, such as FDD and TDD, to be proposed in the present invention. And joint operations were not considered.
  • the present invention proposes an operation method in a terminal and an operation method in a base station in consideration of a joint operation of FDD and TDD, which are different duplex modes, and carrier aggregation of FDD and TDD.
  • each duplex mode is used in the small cell, and the CA and joint operations between the macro cell and the small cell, and dual connectivity are performed.
  • the operation method in the terminal and the operation in the base station are performed in the existing duplex mode. It is necessary to be defined differently from the case of performing the present invention, and therefore, a method of operating the terminal, an operation setting method for the terminal from the base station, and related apparatuses and base station apparatuses in the corresponding case are proposed.
  • each duplex mode is used in the small cell regardless of the duplex mode in the macro cell and the small cell environment considering the non-ideal backhaul, and the CA and joint operation between the macro cell and the small cell, and the dual connectivity
  • the operation method in the terminal and the operation in the base station need to be defined differently from the case of performing carrier aggregation from one base station. And it proposes about the apparatus of the terminal and the base station apparatus related thereto.
  • the operation method in the terminal and the operation in the base station are performed in the existing duplex mode. It is necessary to be defined differently from the case of performing the present invention, and therefore, a method of operating the terminal, an operation setting method for the terminal from the base station, and related apparatuses and base station apparatuses are proposed in this case.
  • the present invention enables to designate a SCell (Secondary cell) in the case of supporting carrier aggregation, joint operation, and dual connectivity between a macro cell and a small cell.
  • SCell Secondary cell
  • the following method may be considered for the definition / designation / configuration method of the PCell when the TDD-FDD joint operation and the carrier are merged.
  • Embodiment 1 is a method of defining a PCell depending on the duplex mode, when the carrier of the FDD is configured to one or more multiple component carriers, and the carrier of the TDD is configured to one or more multiple component carriers for the component carrier configured in the terminal For each FDD and TDD duplex mode, one PCell is specified.
  • FDD and TDD perform DL control / data and UL control / data for each duplex mode to follow the operation of PCell and SCells designated for each duplex mode. It is an embodiment to make it. It is also to follow the operation of the terminal and the base station according to the PCell and SCell according to the duplex mode for the operation of the PCell and SCell transmitting HARQ-ACK / NACK and uplink control information (UCI) as feedback for the DL data To define.
  • uplink control information can be transmitted using a method in which a PUCCH defined for each duplex mode is transmitted only to a PCell.
  • a rule about which component carriers, a PCell, or a SCell is transmitted may be set. For example, if there is a PUSCH in the PCell, the UCI is transmitted through the PUSCH of the PCell. If there is no PUSCH in the PCell and there are PUSCHs in the SCells, the PUSCH is in the SCell having the lowest index among the corresponding SCells. Can be set to send.
  • the UE may be configured to transmit the UCI to the PUSCH in the PCell or the SCell indicated by the UL grant indicating the aperiodic CSI request.
  • the PDSCH and the BS are controlled according to the operation method of the UE and the BS under the control of the PCell defined in each duplex mode in terms of PUSCH transmission, PDSCH transmission, and PUSCH transmission under carrier aggregation.
  • PUSCH can be set to be transmitted.
  • the terminal operation and the base station configuration according to the TDD-FDD joint operation using the method applied in the carrier aggregation defined for each FDD or TDD duplex mode is only the FDD duplex mode under CA (FDD Duplex mode only)
  • FDD Duplex mode only In comparison with the case of supporting the TDD duplex mode only (CA only) and the case of supporting only, it can be considered as a method of minimizing the impact on the operation of legacy terminals. That is, since there are operations as PCells according to FDD and TDD duplex modes, respectively, the operation of the terminal and the operation of the base station can be performed independently between the duplex modes according to the operation of the PCell and the SCell defined in each duplex mode. In case of defining / specifying / setting, it is possible to perform TDD-FDD joint operation and carrier merging while minimizing the influence on the operation of legacy terminals.
  • a method may be considered in which the duplex mode for performing access is first set so that the access procedure is performed according to the setting of the corresponding PCell.
  • the access procedure include a cell search procedure, a random access procedure, a handover procedure, and the like.
  • the access procedure follows the PCell depending on whether the synchronization channel used for the FDD carrier is first detected or the synchronization channel used for the TDD carrier. .
  • the priority for a particular duplex mode so that, for example, if the LTE network is deployed using an FDD carrier, and the FDD carrier has sufficient coverage and mobility support, the FDD carrier should be given priority.
  • the TDD carrier is given priority. To perform the access procedure. This may solve the ambiguity between the terminal and the base station that may occur in the access procedure according to the configuration of the PCell between different duplex modes.
  • Embodiment 1 is applicable even when the terminal does not have the capability (capability) to support the duplex mode for the support of TDD-FDD joint operation and carrier aggregation. That is, even non-CA and CA capable terminals having an FDD only mode that supports only FDD, when accessing a network capable of supporting the corresponding FDD-TDD dual mode, the non-CA mode is set to FDD only mode. It is possible to enable CA and CA operation. Also, in case of a non-CA and CA capable terminal having a TDD only mode that supports only TDD, the operation of the terminal having the TDD only mode is accessed as described above in a network capable of supporting the corresponding FDD-TDD dual mode. In TDD only mode, non-CA and CA operations can be performed smoothly.
  • Embodiment 2 A method of configuring one PCell and configuring other component carriers using the same or different duplex modes as SCells by setting under one duplex mode
  • PCell and SCell settings according to the duplex modes of FDD and TDD can be set using a method used in the existing duplex mode.
  • one PCell is configured and the other component carriers are configured as SCells, such as a carrier aggregation of FDDs and a carrier aggregation of TDDs.
  • SCells such as a carrier aggregation of FDDs and a carrier aggregation of TDDs.
  • A-1 and A- It can be configured to consist of 2, A-3, A-4, and A-5.
  • A-3 PCell (FDD), SCell-0 (FDD), SCell-1 (TDD), SCell-2 (FDD or TDD) ⁇
  • A-4 PCell (FDD), SCell-0 (TDD), SCell-1 (FDD), SCell-2 (FDD or TDD) ⁇
  • A-5 PCell (FDD), SCell-0 (TDD), SCell-1 (FDD), SCell-2 (FDD or TDD), SCell-3 (FDD or TDD) ⁇
  • one carrier supporting TDD is configured as a PCell and the other carriers, that is, carriers supporting FDD or carriers supporting TDD except for a carrier configured as PCell, are configured as SCells, B-1, B-2, Can be configured to consist of B-3, B-4, B-5.
  • Configuration B-2 PCell (TDD), SCell-0 (FDD), SCell-1 (TDD or FDD) ⁇
  • TDD PCell
  • SCell-0 FDD
  • SCell-1 TDD
  • SCell-2 TDD or FDD
  • TDD PCell
  • SCell-0 FDD
  • SCell-1 TDD
  • SCell-2 TDD or FDD
  • SCell-3 TDD or FDD
  • a parameter for distinguishing and indicating a duplex mode of FDD and TDD may be explicitly added, or an implicitly indicated downlink carrier frequency ( According to the downlink carrier frequency, it is possible to know whether the SCell supports the FDD duplex or the SCell supports the TDD duplex.
  • the third embodiment is a method of preferentially setting a component carrier supporting the FDD duplex mode as a PCell during a TDD-FDD joint operation.
  • TDD is set to PCell with priority
  • PUSCH / PDSCH / PHICH / UCI should be transmitted according to UL-DL subframe configuration set in a component carrier supporting the TDD duplex mode.
  • Timing needs to be defined. That is, a setting for timing for transmitting PUSCH / PDSCH / PHICH / UCI between FDD and TDD is required, which needs to be defined in advance regarding the timing relationship for each channel for FDD and TDD.
  • the third embodiment does not change the existing technical configuration and only the terminal supporting the TDD-FDD joint operation and carrier aggregation presented in the third embodiment has a corresponding TDD-FDD.
  • TDD-FDD joint operation and carrier aggregation can be supported only by configuring / setting / specifying PCell by giving FDD priority.
  • the present invention can be applied to a case in which PCell settings are not separately configured for each duplex mode as in the method of Embodiments 2 and 3 considered as a PCell designation method, and component carriers having different duplex modes.
  • the component carrier in the duplex mode may be configured to function as the PCell for the lowest SCell index among the SCell indexes that support the duplex mode even though the component carrier is called the SCell. That's how.
  • Examples of some of the functions include 1) transmitting PUCCH, 2) performing cross-carrier scheduling, and 3) performing a non-contention based random access procedure. 4) the ability to send a random access response, 4) if the relationship between the PCell and the SCell in different duplex modes is configured, the SCell with the lowest SCell index under the same duplex mode in the component carrier set to SCell is the cross carrier. It may be configured to have a function of performing scheduling, and may also be configured such that cross carrier scheduling is not applicable to the corresponding SCell. That is, the SCell may be configured to be scheduled only by self-carrier scheduling, similarly to the configuration of the PCell such that the PCell cannot be cross-carrier scheduled from another SCell.
  • the SCell described above is based on the PCell and SCell configuration shown in Embodiment 2, and the above-described FDD is designated as the PCell.
  • the examples of A-1 to A-5 support the TDD mode.
  • the SCell having the lowest SCell index under component carriers is SCell-0 (TDD) for A-1, SCell-0 (TDD) for A-2, SCell-1 (TDD) for A-3, A SCell-0 (TDD) for -4, SCell-0 (TDD) for A-5, and the above TDD is designated as PCell.
  • component carrier supporting FDD mode SCell having the lowest SCell index under these fields is SCell-0 (FDD), SCell-0 (FDD), SCell-1 (FDD), SCell-0 (FDD), SCell-0 ( FDD).
  • the operation of the UE and the base station used independently in the TDD only (TDD only) and the FDD only (FDD only) for some of the functions presented above is not possible. It may be considered as a method to solve the ambiguity of the operation of the base station and the terminal according to the TDD-FDD joint operation by allowing the same operation independently during the TDD-FDD joint operation and the carrier merge.
  • the present invention designates the SCell index as a method applicable to all PCell designation methods, namely, the first, second and third embodiments of the present invention, when performing TDD-FDD joint operation and carrier merging. As to how to do this, two methods are suggested.
  • Embodiment A Method for Independently Setting the SCell Index for Each Duplex Mode, That is, for Each FDD Mode and TDD Mode
  • the method is to configure the SCell index between component carriers supporting the FDD mode, and to configure the SCell index between component carriers supporting the TDD mode.
  • Embodiment B Method of Setting SCell Index According to Configuration of Carrier Regardless of Duplex Mode or Without Duplex Mode
  • the method is a method of assigning SCell indexes between component carriers configured in a terminal without discriminating according to duplex for SCell index when allocating SCell indexes between component carriers supporting FDD and TDD modes. That is, when a component carrier is added to the SCell, the base station configures the SCell index without distinguishing the duplex. For example, if the FDD configures the PCell, and additionally, the component carrier supporting the TDD mode or the FDD mode is added to the SCell, the component carrier is set to have an index of SCell-0, and the additional TDD mode is added here. Alternatively, when one more component carrier supporting the FDD mode is added to the SCell, the corresponding component carrier is set to have the SCell-1 index.
  • TDD constitutes a PCell
  • a component carrier supporting FDD mode or TDD mode is added to the SCell
  • the component carrier is configured to have an index of SCell-0
  • the corresponding component carrier is set to have an SCell-1 index.
  • each SCell index for each FDD and TDD mode is used. Independently setting or setting the SCell index based on the configuration of the carrier regardless of the FDD and TDD mode will be described.
  • any one of the carriers configured as the SCell may perform some functions of the PCell.
  • FIG. 8 is a diagram illustrating a process of configuring a SCell by a base station under different duplex modes according to an embodiment of the present invention.
  • the base station transmits information for setting a carrier of the second duplex mode different from the first duplex mode of the PCell to which the terminal is connected to the first SCell (S810) and using the first SCell, Perform a function (S820).
  • a SCell that performs the functions of the PCell described above is configured, but the SCell is in a duplex mode different from the duplex mode of the PCell.
  • the function of the PCell has been described to perform transmission and reception of PUCCH, cross carrier scheduling, or transmission and reception of a random access response.
  • the first SCell may be self-carrier scheduling, and the first SCell may be configured not to be cross-carrier scheduled when performing one or more of the functions of the PCell. If one PCell is configured for the UE regardless of the duplex mode, the first SCell may perform cross-carrier scheduling for another SCell.
  • the first SCell may be set to be the lowest SCell index. That is, the SCell having the lowest SCell index may be configured to perform the function of the PCell.
  • each SCell index may be independently assigned to each of the duplex modes.
  • the base station further includes independently setting indexes of at least one SCell of the first duplex mode and indexes of at least one SCell of the second duplex mode. The case of assigning the independent SCell index will be described with reference to FIGS. 9 and 11.
  • the SCell index may be allocated without distinguishing the duplex mode.
  • the base station further includes setting the index of at least one SCell of the first duplex mode and the index of at least one SCell of the second duplex mode without distinction. The case of allocating the SCell index without distinction will be described with reference to FIGS. 10 and 12.
  • the base station may configure a second PCell in which one carrier of the second duplex mode is distinguished from the PCell.
  • one carrier of the first duplex mode may be set as a second SCell that is distinguished from the first SCell.
  • the configuration of the first SCell or the configuration of the second PCell and the second SCell encompasses a process in which the base station transmits configuration information through various signaling such as RRC signaling or MAC CE signaling, and the terminal receives the configuration information.
  • FIG. 9 is a diagram for setting a SCell that performs a PCell function when applying Embodiment 2 and Embodiment A of the present invention.
  • FIG. FIG. 9 is a diagram illustrating Embodiment A in which an SCell index is independently used in each of the duplex modes according to an embodiment of the present invention.
  • the FDD and TDD configuration of the UE 1 supporting different duplex modes and the PCell / SCell configuration result thereof are the same as 910.
  • the FDD, TDD configuration of the terminal 2 and the PCell / SCell configuration results thereof are the same as 920.
  • the UE1 has the FDD-PCell set to CC1, and the TDD-SCell_0 915 of CC3 having the lowest index among the SCells of TDD, which is a different duplex mode, becomes the first SCell that performs the function of the PCell.
  • the UE2 has a TDD-PCell set to CC3, and the FDD-SCell_0 925 of CC1 having the lowest index among SCells of FDD having a different duplex mode becomes the first SCell that performs the function of the PCell.
  • FIG. 10 is a diagram for setting a SCell that performs a PCell function when applying Embodiment 2 and Embodiment B of the present invention.
  • FIG. FIG. 10 is a diagram illustrating Embodiment B in which an SCell index is used without distinction of a duplex mode.
  • the base station When the base station operates CC1, CC2, CC3 as the FDD carrier, CC4, CC5 as the TDD carrier (1000), the FDD and TDD configuration of the terminal 1 supporting different duplex modes and the PCell / SCell configuration result thereof are the same as 1010. . In addition, the FDD, TDD configuration of the terminal 2 and the PCell / SCell configuration results thereof are the same as 1020.
  • the UE1 has the FDD-PCell set to CC1, and TDD-SCell_01015, which is CC4 having the lowest index among SCells of TDD in a different duplex mode, becomes the first SCell that performs the function of the PCell.
  • the SCell index of CC2 may be FDD-SCell_0 and the SCell index of CC4 may be TDD-SCell_1.
  • the UE2 has a TDD-PCell set to CC4, and the FDD-SCell_01025 of CC2 having the lowest index among SCells of FDD having a different duplex mode becomes a first SCell that performs the function of the PCell.
  • the SCell index of CC2 may be FDD-SCell_1 and the SCell index of CC5 may be TDD-SCell_0.
  • FIG. 11 is a diagram of setting a SCell that performs a PCell function when applying Embodiment 3 of the present invention.
  • FIG. FIG. 11 is a diagram illustrating Embodiment A in which an SCell index is used independently of each of the duplex modes.
  • the carrier of the FDD is configured as CC 1 and CC 2 1101 independently of the TDD and the carrier of the TDD is configured as CC 1 3, CC 4 and CC 5 independently of the FDD as shown in 1102.
  • CC1 is an FDD-PCell.
  • TDD-SCell_0 which is CC4 having the lowest SCell index, performs the function of the PCell as the first SCell as in 1115.
  • UE 2 is a FDD-PCell.
  • CC3, CC4, and CC5 as TDD, not FDD, and TDD-SCell_0, which is CC3 having the lowest SCell index, performs the function of the PCell as the first SCell as in 1125.
  • FIG. 12 is a diagram of setting a SCell performing a PCell function when applying Embodiment 3 of the present invention.
  • FIG. 12 is a diagram illustrating Embodiment B in which an SCell index is set without distinguishing a duplex mode.
  • the carriers of the FDD are CC1 and CC2, and the carriers of the TDD are CC3, CC4, and CC5 as 1200.
  • UE1 is the FDD-PCell CC1 as shown in 1210. There are CC4 and CC5 as TDDs rather than FDDs, and CC4 having the lowest SCell index performs the function of the PCell as the first SCell as 1215.
  • UE2 is the FDD-PCell CC2 as shown in 1220.
  • CC3 and CC4 are TDDs rather than FDDs, and CC3 having the lowest SCell index performs the function of the PCell as the first SCell as in 1225.
  • the terminal 1 and the terminal 2 is to express that can be configured to configure the UE-specific PCell and SCell, the configuration of the PCell and SCell configuration of the terminal 1 and terminal 2 It may be different, but it does not always mean different and may be set identically according to the operation of the network.
  • FIG. 13 is a diagram illustrating an operation in a terminal according to an embodiment of the present invention.
  • the UE performs the operation of FIG. 13 to configure the SCell by the UE under different duplex modes.
  • the terminal receives information for setting a carrier of a second duplex mode different from the first duplex mode of the PCell connected to the base station as the first SCell from the base station (S1310), and then uses the first SCell to communicate with the base station. Performs the function of the PCell (S1320).
  • the function of the PCell means performing at least one of transmitting and receiving PUCCH, cross carrier scheduling, and transmitting and receiving random access response.
  • the first SCell may be configured to be self-carrier scheduling.
  • the first SCell may be configured to be the lowest SCell index.
  • the first SCell may be configured not to be cross-carrier scheduled when performing one or more of the functions of the PCell.
  • an index of one or more SCells of the first duplex mode and an index of one or more SCells of the second duplex mode may be independently set. This has been described with reference to FIGS. 9 and 11.
  • the indexes of one or more SCells of the first duplex mode and the indexes of one or more SCells of the second duplex mode may be set regardless of the duplex mode.
  • the case in which the SCell index is allocated without distinguishing the duplex mode has been described with reference to FIGS. 10 and 12.
  • one carrier of the second duplex mode sets a second PCell distinguished from the PCell, and one carrier of the first duplex mode is a second SCell distinguished from the first SCell. Can be set.
  • the configuration of the first SCell, or the configuration of the second PCell and the second SCell encompasses a process in which the base station transmits configuration information through various signaling such as RRC signaling or MAC CE signaling, and the terminal receives the configuration information.
  • the UE and the base station solve the ambiguity between the UE and the base station regarding the behavior of the UE operating according to the PCell configuration and the base station configuration.
  • FIG. 14 illustrates a configuration of a base station according to an embodiment of the present invention.
  • a base station 1400 includes a controller 1410, a transmitter 1420, and a receiver 1430.
  • the controller 1410 controls the overall operation of the base station according to the configuration of the SCell in consideration of the joint operation of FDD and TDD and the merging of carriers of the FDD and TDD in different duplex modes required for carrying out the above-described present invention. .
  • the control unit 1410 is a method for configuring a SCell by the terminal required to perform the present invention described above, the carrier merge and joint operation, dual connectivity under different macro cell and small cell environment (or macro eNB and small cell eNB) If is performed, the overall control of the operation of the base station according to the designation of the PCell / SCell according to the different duplex mode applicable regardless of the duplex mode.
  • the transmitter 1420 and the receiver 1430 are used to transmit and receive signals, messages, and data necessary for carrying out the above-described present invention.
  • the configuration of the base station 1400 to configure the SCell in different duplex mode is a receiver 1430 for receiving the uplink from the terminal, the carrier of the second duplex mode different from the first duplex mode of the PCell connected to the terminal to the first SCell And a control unit 1410 for generating setting information, and a transmitting unit 1420 for transmitting the generated information to the terminal, wherein the control unit 1410 uses the first SCell to perform functions of the terminal and the PCell.
  • the transmitter 1420 and the receiver 1430 are controlled to perform the same.
  • a SCell that performs the functions of the PCell described above is configured, but the SCell is in a duplex mode different from the duplex mode of the PCell.
  • the controller 1410 may perform any one or more of transmitting and receiving PUCCH, a cross carrier scheduling, and a random access response, which are functions of a PCell, by using the first SCell.
  • the first SCell may be self-carrier scheduling, and the first SCell may be configured not to be cross-carrier scheduled when performing one or more of the functions of the PCell. If one PCell is configured for the UE regardless of the duplex mode, the first SCell may perform cross-carrier scheduling for another SCell.
  • the first SCell may be set to be the lowest SCell index. That is, the SCell having the lowest SCell index may be configured to perform the function of the PCell.
  • each SCell index may be independently assigned to each of the duplex modes.
  • the controller 1410 may independently set an index of at least one SCell of the first duplex mode and an index of at least one SCell of the second duplex mode. The case of assigning the independent SCell index has been described with reference to FIGS. 9 and 11.
  • the SCell index may be allocated without distinguishing the duplex mode.
  • the controller 1410 may set an index of one or more SCells of the first duplex mode and an index of one or more SCells of the second duplex mode without distinction. The case of allocating the SCell index without distinction has been described with reference to FIGS. 10 and 12.
  • the controller 1410 may set a second PCell in which one carrier of the second duplex mode is distinguished from the PCell.
  • one carrier of the first duplex mode may be set as a second SCell that is distinguished from the first SCell.
  • the configuration of the first SCell, or the configuration of the second PCell and the second SCell may be transmitted by the transmitter 1420 through various signaling such as RRC signaling or MAC CE signaling, and may be received by the terminal.
  • 15 is a diagram illustrating a configuration of a user terminal according to an embodiment of the present invention.
  • a user terminal 1500 includes a receiver 1530, a controller 1510, and a transmitter 1520.
  • the receiver 1530 receives downlink control information, data, and a message from a base station through a corresponding channel.
  • controller 1510 controls the overall operation of the terminal according to the configuration of the SCell in consideration of the joint operation of the FDD and TDD and the merge of the carrier of the FDD and TDD in different duplex modes required to carry out the above-described present invention. do.
  • control unit 1120 is a method for configuring the SCell by the terminal required to perform the present invention described above, the carrier merge and joint operation, under the different macro cell and small cell environment (or macro eNB and small cell eNB), dual
  • the overall terminal operation is controlled according to designation of the PCell / SCell according to different duplex modes applicable regardless of the duplex mode.
  • the transmitter 1520 transmits uplink control information, data, and a message to a base station through a corresponding channel.
  • the terminal 1500 configured to configure the SCell in different duplex modes includes a transmitter 1520 for transmitting an uplink to a base station and a carrier having a second duplex mode different from a first duplex mode of a PCell connected to the base station.
  • the controller 1510 may perform any one or more of transmission and reception of PUCCH, a cross carrier scheduling, and transmission and reception of a random access response, which are functions of a PCell, by using the first SCell.
  • the first SCell may be configured to be self-carrier scheduling, and the first SCell may be configured not to be cross-carrier scheduled when performing at least one of the functions of the PCell.
  • the first SCell may be configured to be the lowest SCell index.
  • the controller 1510 may independently set an index of one or more SCells of the first duplex mode and an index of one or more SCells of the second duplex mode. This has been described with reference to FIGS. 9 and 19.
  • the controller 1510 may set an index of at least one SCell of the first duplex mode and an index of at least one SCell of the second duplex mode without distinction.
  • the SCell index is allocated without distinction has been described with reference to FIGS. 10 and 12.
  • the controller 1510 sets a second PCell in which one carrier of the second duplex mode is different from the PCell, and one carrier of the first duplex mode is the first SCell. It is possible to set a second SCell distinct from the.
  • the base station transmits configuration information through various signaling such as RRC signaling or MAC CE signaling, and the reception unit 1530 may configure the configuration of the first SCell or the configuration of the second PCell and the second SCell.
  • various signaling such as RRC signaling or MAC CE signaling
  • the embodiments of the present disclosure described so far provide a method and apparatus for operating a base station and a terminal for configuring a SCell when a base station considers a duplex mode of a joint operation of FDD and TDD and carrier aggregation of FDD and TDD. to provide.
  • Each SCell index is independently set for each of the FDD and TDD modes, or the SCell index is set based on a carrier configuration regardless of the FDD and TDD modes.
  • the Pcell / SCell designation method according to the different duplex modes described above is related to the duplex mode when carrier merging and joint operations are performed under different macro cell and small cell environments (or macro eNB and small cell eNB). It may be applicable without, and in more detail the methods described below may be considered.
  • Embodiment 4 similarly to Embodiment 1 in which carrier aggregation is independently performed for each duplex mode of the present invention, base station type dependent Pcell is performed to independently perform carrier aggregation for different base stations. Definition methods may be considered. That is, in case that each macro eNB and small cell eNB are configured, it is possible to designate a Pcell for each eNB of a different type and to perform an operation of a UE possible in the Pcell described in the present invention.
  • the method is a method for defining a Pcell depending on the base station, the carrier belonging to the macro base station is set to one or more multiple component carriers for the component carrier configured in the terminal, the carrier is one or more in the small cell base station For the case of configuring the multi-component carrier to the Pcell is specified for each eNB of a different type.
  • This method allows each of the macro base station and the small cell base station to follow the operation of the designated Pcell and SCells for each base station in transmitting DL control / data and UL control / data.
  • the PLC and the SCells As feedback for the PLC and the SCells to transmit HARQ-ACK / NACK and uplink control information (UCI), it is defined to follow the operations of the UE and the BS according to the Pcells and SCells according to the configuration of each base station.
  • the PUCCH defined for each base station type can transmit the uplink control information using a method of transmitting only the Pcell, and the uplink control information is piggybacked into the PUSCH.
  • a PSCH has a PUSCH
  • a rule about which component carriers, a Pcell, or a SCell should be transmitted is transmitted. If the Pcell has a PUSCH, the Ucell is transmitted to the PUcell of the Pcell. If there is no PUSCH in the SCells, a method of transmitting to the PUSCH in the SCell having the lowest index among the corresponding SCells is used, or when an aperiodic CSI request is specified from the base station. For Pcell under the base station indicated by the UL grant indicating the aperiodic CSI request Alternatively, a method of transmitting the UCI to the PUSCH in the SCell may be used.
  • the PUSCH transmission, the PDSCH transmission, and the PUSCH transmission aspects under carrier merging can be transmitted according to the operation method of the terminal and the base station under the control of the Pcell defined in each base station.
  • Embodiment 1 is used in the end to define the UE and base station operation under each macro base station and small cell base station, which is used under a single base station at the time of carrier aggregation for each FDD or TDD duplex mode or TDD duplex mode.
  • FDD duplex mode only under single base station carrier aggregation and when supporting TDD duplex mode under carrier aggregation Compared with, it can be considered as a way to minimize the impact of interoperability on legacy systems.
  • the operation of the terminal and the base station can be independently performed between the base stations according to the operation of the Pcell and the SCell defined in each base station type.
  • it enables dual connectivity or joint operation or carrier merging under the macro base station and the small cell base station while minimizing the effect such as interoperability with legacy systems.
  • the macro base station is first set as the base station performing the access first, and according to the Pcell setting, the access procedure (ex. Cell search procedure, random access procedure) is performed. , handover procedure, etc.) may be considered.
  • the access procedure may be determined depending on whether the synchronization channel used in the macro base station is first detected or the synchronization channel used in the small cell base station is first detected. This method is to follow the Pcell.
  • the macro base station and the small cell base station may be set to give priority to the macro base station, for example, if the existing LTE network is deployed using the macro base station to provide sufficient coverage and mobility support.
  • the small cell base station can be performed with the access procedure. Can be considered. This may solve the ambiguity between the terminal and the base station that may occur in the access procedure according to the configuration of the Pcell between different base station types.
  • the fourth embodiment is a non-CA under a macro base station when accessing a network capable of supporting the dual connectivity even if the terminal does not support the carrier merging and joint operation of the macro base station and the small cell base station and the dual connectivity.
  • -CA and CA operation and non-CA and CA operation under a small cell base station.
  • the fifth embodiment supports the CA and dual connectivity of the macro base station and the small cell base station similarly to the second embodiment
  • the configuration of the Pcell and the SCell constitutes one Pcell as in the existing one base station.
  • the remaining component carriers are configured to use a scheme of configuring SCells. An example of such a case is as follows.
  • One carrier supporting a macro base station is configured as a Pcell, and carriers other than the carriers under the other macro base station and the small cell base station, that is, a carrier set as a Pcell are configured as SCell.
  • X-1, X-2, X-3, The configuration of X-4 and X-5 is as follows.
  • Configuration X-4 Pcell (macro), SCell-0 (small cell), SCell-1 (macro), SCell-2 (macro or small cell) ⁇
  • One carrier supporting the small cell base station is configured as a Pcell, and the carriers other than the carriers under the other macro base station and the small cell base station, that is, the carrier set as the Pcell are configured as SCell.
  • Y-1, Y-2, Y-3 Looking at the configuration of, Y-4, Y-5 is as follows.
  • Composition Y-2 ⁇ Pcell (Small cell), SCell-0 (macro), SCell-1 (Small cell or macro) ⁇
  • Composition Y-3 ⁇ Pcell (Small cell), SCell-0 (small cell), SCell-1 (macro), SCell-2 (Small cell or macro) ⁇
  • Composition Y-5 ⁇ Pcell (Small cell), SCell-0 (macro), SCell-1 (Small cell), SCell-2 (Small cell or macro), SCell-3 (Small cell or macro) ⁇
  • Embodiment 6 is a method for prioritizing PCell definition of a carrier belonging to a macro base station.
  • robust mobility support may be insufficient compared to a macro cell base station in which a component carrier supporting the small cell base station is deployed in advance.
  • a coverage hole may be found and a problem may occur in transmitting / receiving data of uplink and downlink of a terminal, such as falling into a radio link failure (RLF). Consideration may be given to how selection can be avoided.
  • RLF radio link failure
  • the present invention can be applied to a case where the configuration of the Pcell is not separately configured for each base station type as in the method of Embodiments 5 and 6 considered as the Pcell designation method.
  • the component carrier having a different base station type may be used as a Pcell for the lowest SCell index among SCell indexes that support the base station type, even though the component carrier is SCell. How to set some functions.
  • the SCell having the lowest SCell index under the same base station type in the component carrier configured as SCell is cross-carrier. It may be configured to have a function of performing scheduling, and may also be configured such that cross carrier scheduling is not applicable to the corresponding SCell. That is, the SCell may be configured to be scheduled only by self-carrier scheduling, similarly to that the Pcell is not configured to be cross-carrier scheduled from another SCell. As described above, the SCell described above is based on the Pcell and the SCell configuration shown in Embodiment 5). When the carrier supporting the macro base station described above is designated as the Pcell, X-1 to X In the example of -5, the SCell having the lowest SCell index under component carriers supporting the small cell base station is as follows.
  • SCell-0 Small cell
  • the component carrier supporting the small cell base station is designated as Pcell.
  • the SCell having the lowest SCell index under the component carriers supporting the macro base station is Y-1 to Y-5. For each case is as follows.
  • This method supports both CA and dual connectivity of macro cell base station and small cell base station, and support of dual connectivity of macro and small cell for some of the functions presented above when Pcell is configured and SCell is configured regardless of duplex mode.
  • the operation of the base station and the terminal so that the operation of the terminal and the base station used independently in the carrier aggregation of TDD only (TDD only) and FDD only (FDD only) can operate in the network that supports dual connectivity. It can be considered as a way to resolve the ambiguity.
  • the present invention provides a method for designating a Pcell when a UE belonging to a different base station type performs CA and dual connectivity, that is, a method applicable to all of the fourth, fifth, and sixth embodiments of the present invention.
  • a method for designating a Pcell when a UE belonging to a different base station type performs CA and dual connectivity that is, a method applicable to all of the fourth, fifth, and sixth embodiments of the present invention.
  • the following two methods are proposed as to a method of designating an SCell index.
  • Embodiment C Method for Independently Setting SCell Index for Each Base Station Type, i.e., Macro Base Station and Small Cell Base Station
  • the method is to configure the SCell index between the component carriers supported in the macro base station, and to configure the SCell index between the component carriers supported in the small cell base station.
  • the macro base station and the small cell base station operate in a CA and joint operation and dual connectivity, and in the case of a network or a base station, the base station and the base station have different types of operations that are independently used in each base station.
  • it can be considered as a way to solve the ambiguity of the operation of the base station type and the terminal by allowing them to operate independently independently.
  • Embodiment D Method of Setting SCell Index According to Component Carrier Configured for UE without Regarding Each Base Station Type or Separately from Base Station Type
  • the corresponding method is a method of assigning SCell indexes between component carriers configured in a terminal without distinguishing the SCell index according to the base station type when allocating SCell indexes between component carriers supported for each base station type. That is, the base station is a method for setting the SCell index without distinction according to the base station type when one component carrier is added to the SCell. For example, when the macro base station configures a Pcell, and additionally, a small cell base station or a component carrier supporting the macro base station is added to the SCell, the component carrier is set to have an index of SCell-0, and further When one more component carrier supporting the small cell base station or the macro base station is added to the SCell, the corresponding component carrier is set to have the SCell-1 index.
  • the component carrier when a small cell constitutes a Pcell, and additionally a macro base station or a component carrier supporting a small cell base station is added to the SCell, the component carrier is set to have an index of SCell-0, and the macro base station is further added thereto.
  • the corresponding component carrier when one more component carrier supporting the small cell base station is added to the SCell, the corresponding component carrier is configured to have the SCell-1 index.
  • the SCell of the second base station that performs all or part of the functions provided by the Pcell of the first base station is selected and the functions of the Pcell, for example, PUCCH transmission and crossover are selected. Functions such as performing carrier scheduling and transmitting a random access response of a non-competition based random access procedure may be performed.
  • 16 is a diagram illustrating a process of controlling a SCell by a terminal in a small cell environment according to another embodiment of the present invention.
  • the terminal sets an index of one or more SCells controlled by the first base station and an index of one or more SCells controlled by the second base station (S1610).
  • a function of the Pcell is performed using one SCell among the SCells of the second base station.
  • an embodiment of the function of the Pcell may be a function of transmitting a PUCCH.
  • a function of receiving a random access response message in a cross-carrier scheduling function or a non-competition based random access procedure may be a function of the Pcell function. This can be an embodiment.
  • the SCell performing the function of the Pcell may be set so that cross carrier scheduling cannot be performed.
  • the setting of the SCell index of S1610 may be independently set such that the SCell index of the first base station and the SCell index of the second base station overlap with each other by applying the independent setting method of Embodiment C.
  • the SCell index of the S1610 may be set without discriminating the SCell index of the first base station and the SCell index of the second base station by applying the discriminating setting method of Embodiment D.
  • the first base station controls the Pcell
  • the second base station controls the SCell performing the function of the Pcell.
  • the first base station sets an index of at least one SCell controlled by the first base station and an index of at least one SCell controlled by the second base station (S1710), and uses one SCell of the SCell of the second base station. It is set to perform the function of the Pcell (S1715), and using the SCell of one of the SCell of the second base station to transmit information indicating to perform the function of the Pcell (S1720).
  • an embodiment of the function of the Pcell may be a function of receiving a PUCCH, and in addition, a function of the base station transmitting a random access response message in a cross-carrier scheduling function or a non-competition based random access procedure may be a function of the Pcell function. This can be an embodiment.
  • the SCell performing the function of the Pcell may be set so that cross carrier scheduling cannot be performed.
  • the setting of the SCell index of S1710 may be independently set such that the SCell index of the first base station and the SCell index of the second base station overlap with each other by applying the independent setting method of Embodiment C.
  • the SCell index of S1710 may be set without discriminating the SCell index of the first base station and the SCell index of the second base station by applying the discriminating setting method of Embodiment D.
  • a SCell index is set without distinguishing a first base station and a second base station.
  • first base station mac_1 and the second base station abbreviated sma_2 are as follows.
  • M-2 Pcell (mac_1), SCell-0 (sma_2), SCell-1 (mac_1 or sma_2) ⁇
  • M-3 Pcell (mac_1), SCell-0 (mac_1), SCell-1 (sma_2), SCell-2 (mac_1 or sma_2) ⁇
  • M-4 Pcell (mac_1), SCell-0 (sma_2), SCell-1 (mac_1), SCell-2 (mac_1 or sma_2) ⁇
  • FIG. 18 and 19 are diagrams illustrating an example in which an SCell for performing a function of a Pcell is applied by applying another embodiment of the present invention to M-1 to M-4.
  • the SCell index that performs the function of the Pcell is an embodiment of the SCell of the lowest index.
  • the present invention is not limited thereto, and the SCell of the high index may also be implemented to perform the function of the Pcell.
  • 1810 is an embodiment applying the configuration of M-1.
  • the SCell performing the function of the Pcell is SCell-0.
  • 1821 is an embodiment in which mac_1 is an SCell controlling SCell-1 among M-2 configurations
  • 1822 is an embodiment in which sma_2 is an SCell controlling SCell-1 among M-2 configurations, and functions as a Pcell in 1821 and 1822.
  • SCell to perform is SCell-0.
  • 1831 is an embodiment in which mac_1 is an SCell controlling SCell-0 and SCell-2 among M-3 configurations
  • 1832 is an embodiment in which sma_2 is SCell controlling SCell-1 and SCell-2 among M-3 configurations.
  • SCell performing the function of Pcell at 1831 and 1832 is SCell-1.
  • 1841 shows an embodiment in which mac_1 is an SCell controlling SCell-1 and SCell-2 among M-4 configurations
  • 1842 is an embodiment in which sma_2 is SCell controlling SCell-0 and SCell-2 among M-4 configurations.
  • SCell performing the function of Pcell at 1841 and 1842 is SCell-0.
  • the first base station is a small cell and the second base station is a macro cell
  • configurations such as N-1 to N-4 may be used as embodiments.
  • the abbreviation of the first base station sma_1, the second base station abbreviated as mac_2 as follows.
  • N-2 Pcell (sma_1), SCell-0 (mac_2), SCell-1 (sma_1 or mac_2) ⁇
  • N-3 Pcell (sma_1), SCell-0 (sma_1), SCell-1 (mac_2), SCell-2 (sma_1 or mac_2) ⁇
  • N-4 Pcell (sma_1), SCell-0 (mac_2), SCell-1 (sma_1), SCell-2 (sma_1 or mac_2) ⁇
  • FIG. 20 and 21 are diagrams illustrating an example in which an SCell configured to perform a function of a Pcell is configured by applying another embodiment of the present invention to N-1 to N-4.
  • the SCell index performing the function of the Pcell is an embodiment of the SCell of the lowest index.
  • the present invention is not limited thereto, and the SCell of the high index may also be configured to perform the function of the Pcell.
  • 2010 illustrates an embodiment of applying the configuration of N-1.
  • SCell performing a function of a Pcell is SCell-0.
  • 2021 is an embodiment in which sma_1 is a SCell controlling SCell-1 among N-2 configurations
  • 2022 is an embodiment in which mac_2 is a SCell controlling SCell-1 among configurations of N-2, and functions of a Pcell in 2021 and 2022.
  • SCell to perform is SCell-0.
  • 2031 is an embodiment in which sma_1 is a SCell controlling SCell-2 among N-3 configurations
  • 2032 is an embodiment in which mac_2 is a SCell controlling SCell-2 among configurations of N-3, and functions of a Pcell in 2031 and 2032.
  • SCell performing the operation is SCell-1.
  • 2041 is an embodiment in which sma_1 is a SCell controlling SCell-2 among N-4 configurations
  • 2042 is an embodiment in which mac_2 is a SCell controlling SCell-2 among configurations in N-4, and functions of a Pcell in 2041 and 2042.
  • SCell to perform is SCell-0.
  • the SCell performing the function of the Pcell of FIGS. 18 to 21 may provide a function of receiving a PUCCH.
  • the base station transmits a random access response message in a cross-carrier scheduling function or a contention-free random access procedure. This can provide the ability to receive.
  • the SCell performing the function of the Pcell may be set so that cross carrier scheduling cannot be performed.
  • 18 to 21 show a case where the index of the SCell is set without distinction.
  • 22 and 23 are diagrams illustrating an example of independently setting an index.
  • first base station mac_1 and the second base station abbreviated sma_2 are as follows.
  • the configuration of P-1 is shown in 2210, where the SCell performing the function of the Pcell is SCell-0 (SCell-0 (sma_2)) of the second base station.
  • the configuration of the P-2 is 2210
  • the configuration of the P-3 is 2230
  • the configuration of the P-4 is 2240
  • the configuration of the P-5 is 2250.
  • the SCell performing the function of the Pcell is SCell-0 of the second base station.
  • SCell-0 (sma_2) the SCell of the SCell index other than the lowest SCell index may be set to perform the PCell function.
  • the first base station is a small cell and the second base station is a macro cell
  • a configuration such as Q-1 to Q-5 may be used as an embodiment.
  • the configuration of Q-1 is shown in 2310, where the SCell performing the function of the Pcell is SCell-0 (SCell-0 (mac_2)) of the second base station.
  • the configuration of Q-2 is 2310
  • the configuration of Q-3 is 2330
  • configuration of Q-4 is 2340
  • configuration of Q-5 is 2350
  • SCell performing the function of the Pcell is SCell-0 of the second base station.
  • SCell-0 (mac_2)
  • the SCell of the SCell index other than the lowest SCell index may be set to perform the PCell function.
  • the UE when performing CA between base stations having different base station types, that is, inter-base station carrier aggregation and dual connectivity, the UE operates according to the configuration of a Pcell and a SCell between different base station types.
  • the access procedure and up / downlink data transmission between the terminal and the base station and up / down link control channel transmission and reception operations including HARQ operation can be accurately performed.
  • the reliability of the data transmission of the terminal under a different base station and the terminal which also allows to increase the data rate of the uplink / downlink.
  • 24 is a diagram illustrating a configuration of a user terminal according to another embodiment of the present invention.
  • a user terminal 2400 includes a receiver 2430, a controller 2410, and a transmitter 2420.
  • the receiver 2430 receives downlink control information, data, and a message from a base station through a corresponding channel.
  • control unit 2410 controls the overall operation of the terminal according to the configuration of the SCell in consideration of the joint operation of the FDD and TDD and the carrier merging of the FDD and TDD in different duplex modes required to carry out the above-described present invention. do.
  • control unit 2410 is a method for configuring the SCell by the terminal required to perform the present invention described above, the carrier merge and joint operation, dual operation under different macro cell and small cell environment (or macro eNB and small cell eNB) When the connectivity is performed, it controls the overall operation of the terminal according to designating Pcell / SCell according to different base station types applicable regardless of the duplex mode.
  • the transmitter 2420 transmits uplink to the first base station and / or the second base station, and the receiver 2430 receives the downlink from the first base station and / or the second base station.
  • the controller 2410 receives the indexes of one or more SCells controlled by the first base station and the indexes of one or more SCells controlled by the second base station. Thereafter, the controller 2410 controls the transmitter 2420 and the receiver 2410 to perform a function of a Pcell using one SCell of the SCell of the second base station.
  • the function of the Pcell includes the transmitter 2420 transmitting the PUCCH.
  • the function of the Pcell includes a cross carrier scheduling function or a function of receiving a random access response message in a non-competition based random access procedure.
  • the SCell performing the function of the Pcell may be configured to not be cross-carrier scheduled.
  • the control unit 2410 may independently set so that the SCell index of the first base station and the SCell index of the second base station overlap, whereas the SCell index of the first base station and the SCell index of the second base station do not overlap. It can be set without distinction.
  • 25 is a diagram illustrating a configuration of a base station according to another embodiment of the present invention.
  • a base station 2500 includes a controller 2510, a transmitter 2520, and a receiver 2530.
  • the controller 2510 controls the overall operation of the base station according to the configuration of the SCell in consideration of the joint operation of FDD and TDD and the merging of carriers of the FDD and TDD in different duplex modes required to carry out the above-described present invention. .
  • the control unit 2510 is a method for configuring a SCell by the terminal required to perform the above-described invention, the carrier merge and joint operation, dual connectivity under different macro cell and small cell environment (or macro eNB and small cell eNB) If is performed, the operation of the overall base station according to the designation of the Pcell / SCell according to the different base station types applicable regardless of the duplex mode is controlled.
  • the transmitter 2520 and the receiver 2530 are used to transmit and receive signals, messages, and data necessary for carrying out the above-described present invention.
  • the transmitter 2520 transmits downlink control information, data, and messages to the terminal through a corresponding channel.
  • the transmitter 2520 transmits a downlink to the terminal, and the receiver 2530 receives an uplink from the terminal.
  • the controller 2510 sets an index of at least one SCell controlled by the base station and an index of at least one SCell controlled by a second base station different from the base station, and uses one SCell of the SCell of the second base station. Set to perform the function of the Pcell. Thereafter, the controller 2510 may control the transmitter 2520 and the receiver 2530 to transmit information indicating to perform the function of the Pcell by using one SCell of the SCell of the second base station to the terminal. have.
  • the function of the Pcell is that the reception unit 2530 receives the PUCCH.
  • the function of the Pcell may be to transmit a random access response message in a cross-carrier scheduling function or a contention free random access procedure. It may include any one or more of the functions.
  • the controller 2510 may be set so that the SCell performing the function of the Pcell can not be cross-carrier scheduling.
  • the controller 2510 may independently set the SCell index of the base station 2500 so that the SCell index of the second base station overlaps.
  • the SCell index of the base station 2500 and the SCell index of the second base station Can be set without distinction so as not to overlap.
  • the embodiments of the present disclosure described so far provide a method and apparatus for operating a base station and a terminal for configuring a SCell when a base station considers a duplex mode of a joint operation of FDD and TDD and carrier aggregation of FDD and TDD. to provide.
  • a UE in a method for configuring a SCell, performs a duplex mode of FDD and TDD joint operation and FDD and TDD carrier aggregation (carrier aggregation, carrier aggregation).
  • FDD and TDD carrier aggregation carrier aggregation, carrier aggregation.
  • each SCell index is set independently for each of the FDD and TDD modes, or the SCell index is set based on a carrier configuration regardless of the FDD and TDD modes.
  • duplexing is performed when carrier merging, joint operation, and dual connectivity are performed under different macro cell and small cell environments (or macro eNB and small cell eNB).
  • macro cell and small cell environments or macro eNB and small cell eNB.

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Abstract

La présente invention concerne un procédé et un appareil servant à réaliser une agrégation de porteuses. Le procédé comprend les étapes suivantes : la réception d'un indice d'au moins une cellule S commandée par une première station de base et un indice d'au moins une cellule S commandée par une seconde station de base ; et l'exécution de la fonction de la cellule P à l'aide d'une cellule S à partir des cellules S de la seconde station de base.
PCT/KR2014/006704 2013-07-26 2014-07-23 Procédé et appareil d'agrégation de porteuses WO2015012593A1 (fr)

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CN201480042329.2A CN105409139B (zh) 2013-07-26 2014-07-23 执行载波聚合的方法及执行载波聚合的装置
US14/897,233 US9900924B2 (en) 2013-07-26 2014-07-23 Method and apparatus for carrier aggregation

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KR10-2013-0088899 2013-07-26
KR20130088899 2013-07-26
KR10-2013-0125615 2013-10-21
KR20130125615 2013-10-21
KR1020140007158A KR20150012986A (ko) 2013-07-26 2014-01-21 캐리어 병합을 설정하는 방법 및 이를 위한 장치
KR10-2014-0007158 2014-01-21
KR1020140015093A KR101615804B1 (ko) 2013-07-26 2014-02-10 스몰 셀 환경에서 캐리어 병합을 제어하는 방법 및 그 장치
KR10-2014-0015093 2014-02-10

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