WO2017222324A1 - Procédé d'émission et de réception de données dans un système de communication sans fil et dispositif pour le prendre en charge - Google Patents

Procédé d'émission et de réception de données dans un système de communication sans fil et dispositif pour le prendre en charge Download PDF

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Publication number
WO2017222324A1
WO2017222324A1 PCT/KR2017/006603 KR2017006603W WO2017222324A1 WO 2017222324 A1 WO2017222324 A1 WO 2017222324A1 KR 2017006603 W KR2017006603 W KR 2017006603W WO 2017222324 A1 WO2017222324 A1 WO 2017222324A1
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Prior art keywords
base station
data
cell
terminal
carrier
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PCT/KR2017/006603
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English (en)
Korean (ko)
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심현진
강지원
김희진
변일무
조희정
한진백
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엘지전자(주)
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • the present invention relates to a method for transmitting and receiving data of a terminal in a wireless communication system, and more particularly, to a method for transmitting and receiving the same data repeatedly by adding a cell / carrier and an apparatus for supporting the same.
  • Mobile communication systems have been developed to provide voice services while ensuring user activity.
  • the mobile communication system has expanded not only voice but also data service.As a result of the explosive increase in traffic, a shortage of resources and users are demanding higher speed services, a more advanced mobile communication system is required. have.
  • An object of the present invention is to provide a method and apparatus for transmitting the same data in duplicate in order to increase the reliability of the data transmission.
  • the present invention provides a method and apparatus for adding a New Radio Access Technology (RAT) network for transmitting and receiving the same plurality of data to a Long Term Evolution (LTE) network in a multi-radio access technology (Multi-Radio Access Technology) environment
  • RAT New Radio Access Technology
  • LTE Long Term Evolution
  • Multi-Radio Access Technology Multi-Radio Access Technology
  • Another object of the present invention is to provide a method and apparatus for transmitting and receiving the same plurality of data by adding a cell / carrier to which carrier aggregation (CA) is applied.
  • CA carrier aggregation
  • an object of the present invention is to provide a method and apparatus for transmitting and receiving the same plurality of data by adding a base station using Dual Connectivity.
  • the present invention provides a method and apparatus for transmitting and receiving data by a terminal in a wireless communication system in order to solve the above problems.
  • the data transmission and reception method receiving capability information (Capability information) associated with the first specific function of the second base station from the first base station, the first specific function is the second
  • Capability information Capability information
  • the first specific function is the second
  • a base station receives a same data from the terminal as the first base station; Establishing a connection with the second base station based on the capability information; Receiving first control information indicating whether the first specific function of the second base station is activated from the first base station; Transmitting specific data to the first base station; And transmitting the duplicated data to the second base station according to whether the first specific function is activated, wherein the duplicated data is generated using the specific data.
  • the communication unit for transmitting and receiving a wireless signal with the outside; And a process operatively coupled with the communication unit, wherein the process receives from the first base station Capability information related to the first specific function of the second base station, wherein the first specific function is the first specific function.
  • a second base station is a function for receiving the same data as the first base station from the terminal, establishes a connection with the second base station based on the capability information, and the first specific function of the second base station from the first base station; Receiving first control information indicating whether is activated, transmitting specific data to the first base station, and transmitting duplicate data to the second base station according to whether the first specific function is activated, The duplicated data is provided by using the specific data.
  • the present invention has the effect of producing a plurality of the same data for providing the same service by generating a plurality of duplicate data through the duplication of data.
  • the present invention has the effect of transmitting and receiving a plurality of the same data by adding a cell / carrier using Carrier Aggregation (CA) or Dual Connectivity.
  • CA Carrier Aggregation
  • the present invention transmits the same data through a plurality of component carriers (CC) to which Carrier Aggregation (CA) or a plurality of base stations and / or cells to which dual connectivity (Dual Connectivity) is applied, thereby ensuring the reliability of data transmission (Reliability) There is an effect to increase.
  • CC component carriers
  • CA Carrier Aggregation
  • Dual Connectivity Dual Connectivity
  • FIG. 1 is a diagram illustrating an example of an EPS (Evolved Packet System) related to an LTE system to which the present invention can be applied.
  • EPS Evolved Packet System
  • FIG. 2 is a flowchart illustrating a process of establishing an RRC connection to which the present invention can be applied.
  • FIG. 3 is a flowchart illustrating a RRC connection resetting process to which the present invention can be applied.
  • FIGS. 4 and 5 are diagrams illustrating an example of a layer 2 structure in carrier aggregation to which the present invention can be applied.
  • FIG. 6 is a diagram illustrating an example of a component carrier and carrier aggregation in a wireless communication system to which the present invention can be applied.
  • FIGS. 7 to 9 are diagrams illustrating an example of a structure of a dual connectivity and a network interface to which the present invention can be applied.
  • FIG. 10 is a flowchart illustrating an example of transmitting and receiving a plurality of data by adding a new RAT in a multi-RAT environment proposed in the present specification.
  • 11 is a flowchart illustrating an example of transmitting and receiving a plurality of the same data through the addition of a base station using dual connectivity proposed in the present specification.
  • FIG. 12 is a flowchart illustrating an example of transmitting and receiving a plurality of identical data through cell / carrier addition using carrier aggregation proposed in the present specification.
  • FIG. 13 is a flowchart illustrating another example of transmitting and receiving a plurality of data by adding a new RAT in a multi-RAT environment proposed in the present specification.
  • FIG. 14 is a flowchart illustrating still another example of transmitting and receiving a plurality of identical data through the addition of a base station using dual connectivity proposed in the present specification.
  • FIG. 15 is a flowchart illustrating still another example of transmitting and receiving a plurality of identical data through cell / carrier addition using carrier aggregation proposed in the present specification.
  • 16 is a flowchart illustrating an example of a method for transmitting and receiving a plurality of identical data by adding a base station or a cell by the terminal proposed in the present specification.
  • 17 is a diagram illustrating an example of an internal block diagram of a wireless device to which the present invention can be applied.
  • a base station has a meaning as a terminal node of a network that directly communicates with a terminal.
  • the specific operation described as performed by the base station in this document may be performed by an upper node of the base station in some cases. That is, it is obvious that various operations performed for communication with a terminal in a network composed of a plurality of network nodes including a base station may be performed by the base station or other network nodes other than the base station.
  • a 'base station (BS)' may be replaced by terms such as a fixed station, a Node B, an evolved-NodeB (eNB), a base transceiver system (BTS), an access point (AP), and the like. .
  • a 'terminal' may be fixed or mobile, and may include a user equipment (UE), a mobile station (MS), a user terminal (UT), a mobile subscriber station (MSS), a subscriber station (SS), and an AMS ( Advanced Mobile Station (WT), Wireless Terminal (WT), Machine-Type Communication (MTC) Device, Machine-to-Machine (M2M) Device, Device-to-Device (D2D) Device, etc.
  • UE user equipment
  • MS mobile station
  • UT user terminal
  • MSS mobile subscriber station
  • SS subscriber station
  • AMS Advanced Mobile Station
  • WT Wireless Terminal
  • MTC Machine-Type Communication
  • M2M Machine-to-Machine
  • D2D Device-to-Device
  • downlink means communication from a base station to a terminal
  • uplink means communication from a terminal to a base station.
  • a transmitter may be part of a base station, and a receiver may be part of a terminal.
  • a transmitter may be part of a terminal and a receiver may be part of a base station.
  • CDMA code division multiple access
  • FDMA frequency division multiple access
  • TDMA time division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • GSM global system for mobile communications
  • GPRS general packet radio service
  • EDGE enhanced data rates for GSM evolution
  • OFDMA may be implemented in a wireless technology such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, evolved UTRA (E-UTRA).
  • UTRA is part of a universal mobile telecommunications system (UMTS).
  • 3rd generation partnership project (3GPP) long term evolution (LTE) is a part of evolved UMTS (E-UMTS) using E-UTRA, and employs OFDMA in downlink and SC-FDMA in uplink.
  • LTE-A (advanced) is the evolution of 3GPP LTE.
  • Embodiments of the present invention may be supported by standard documents disclosed in at least one of IEEE 802, 3GPP, and 3GPP2, which are wireless access systems. That is, steps or parts which are not described to clearly reveal the technical spirit of the present invention among the embodiments of the present invention may be supported by the above documents. In addition, all terms disclosed in the present document can be described by the above standard document.
  • EPS stands for Evolved Packet System and means a core network supporting a Long Term Evolution (LTE) network.
  • LTE Long Term Evolution
  • UMTS evolved network
  • PDN Public Data Network
  • APN Access Point Name: A name of an access point managed in a network, which is provided to a UE. That is, the name (string) of the PDN. Based on the name of the access point, the corresponding PDN for the transmission and reception of data is determined.
  • Tunnel Endpoint Identifier An end point ID of a tunnel established between nodes in a network, and is set for each section in bearer units of each UE.
  • MME Mobility Management Entity
  • a session is a channel for data transmission.
  • the unit may be a PDN, a bearer, or an IP flow unit.
  • the difference between each unit can be divided into the entire unit network unit (APN or PDN unit), QoS classification unit (Bearer unit), and destination IP address unit as defined in 3GPP.
  • APN unit network unit
  • PDN unit QoS classification unit
  • Bearer unit destination IP address unit as defined in 3GPP.
  • EPS Bearer Logical path created between the UE and the gateway through which various kinds of traffic are transmitted and received.
  • Default EPS Bear As a logical path for data transmission and reception basically created when the terminal accesses the network, it may be maintained until the terminal exits from the network.
  • Dedicated EPS Bearer A logical path created when needed to provide additional services after the Default EPS Bearer is created.
  • IP flow Various types of traffic transmitted and received through a logical path between a terminal and a gateway.
  • Service Data Flow The IP flow or combination of multiple IP flows of user traffic classified by service type.
  • PDN connection (connection) A connection from the terminal to the PDN, that is, the association (connection) of the terminal represented by the IP address with the PDN represented by the APN.
  • UE Context The context information of the UE used to manage the UE in the network, that is, the context information consisting of UE id, mobility (current location, etc.), and attributes of the session (QoS, priority, etc.)
  • FIG. 1 is a diagram illustrating an example of an EPS (Evolved Packet System) related to an LTE system to which the present invention can be applied.
  • EPS Evolved Packet System
  • the LTE system aims to provide seamless Internet Protocol connectivity between the user equipment (UE) and the packet data network (PDN) without interfering with the end user's use of the application on the go. .
  • the LTE system completes the evolution of wireless access through the Evolved Universal Terrestrial Radio Access Network (E-UTRAN), which defines a radio protocol architecture between the user terminal and the base station, which is an Evolved Packet Core (EPC) network. It is also achieved through evolution in non-wireless terms by the inclusion of System Architecture Evolution (SAE).
  • SAE System Architecture Evolution
  • LTE and SAE include an Evolved Packet System (EPS).
  • EPS Evolved Packet System
  • the EPS uses the concept of EPS bearers to route IP traffic from the gateway to the user terminal in the PDN.
  • a bearer is an IP packet flow having a specific Quality of Service (QoS) between the gateway and the user terminal.
  • QoS Quality of Service
  • E-UTRAN and EPC both set up and release bearers required by the application.
  • EPC also called CN (core network)
  • CN core network
  • a node (logical or physical node) of an EPC of the SAE includes a mobility management entity (MME) 30, a PDN-GW or a PDN gateway (P-GW) 50, and an S-GW ( Serving Gateway (40), Policy and Charging Rules Function (PCRF) 60, Home Subscriber Server (HSS) 70, and the like.
  • MME mobility management entity
  • P-GW PDN gateway
  • S-GW Serving Gateway
  • PCRF Policy and Charging Rules Function
  • HSS Home Subscriber Server
  • the MME 30 is a control node that handles signaling between the UE and the CN.
  • the protocol exchanged between the UE and the CN is known as the Non-Access Stratum (NAS) protocol.
  • NAS Non-Access Stratum
  • Examples of functions supported by the MME 30 include functions related to bearer management operated by the session management layer in the NAS protocol, including network setup, management, and release of bearers, network and It is manipulated by the connectivity layer or mobility management layer in the NAS protocol layer, including the establishment of connection and security between UEs.
  • the S-GW 40 serves as a local mobility anchor for data bearers when the UE moves between base stations (eNodeBs). All user IP packets are sent via the S-GW 40.
  • the S-GW 40 may also temporarily downlink data while the UE is in an idle state known as the ECM-IDLE state and the MME initiates paging of the UE to re-establish the bearer. Maintain bearer related information when buffering. It also serves as a mobility anchor for inter-working with other 3GPP technologies such as General Packet Radio Service (GRPS) and Universal Mobile Telecommunications System (UMTS).
  • GRPS General Packet Radio Service
  • UMTS Universal Mobile Telecommunications System
  • the P-GW 50 performs IP address assignment for the UE and performs flow-based charging in accordance with QoS enforcement and rules from the PCRF 60.
  • the P-GW 50 performs QoS enforcement for GBR bearers (Guaranteed Bit Rate (GBR) bearers). It also serves as a mobility anchor for interworking with non-3GPP technologies such as CDMA2000 or WiMAX networks.
  • GBR bearers Guard Bit Rate (GBR) bearers
  • the PCRF 60 performs policy control decision-making and performs flow-based charging.
  • the HSS 70 is also called a home location register (HLR) and includes SAE subscription data including information on EPS-subscribed QoS profiles and access control for roaming. It also includes information about the PDN that the user accesses. This information may be maintained in the form of an Access Point Name (APN), which is a Domain Name system (DNS) -based label that identifies the PDN address that represents the access point or subscribed IP address for the PDN.
  • API Access Point Name
  • DNS Domain Name system
  • various interfaces such as S1-U, S1-MME, S5 / S8, S11, S6a, Gx, Rx, and SG may be defined between EPS network elements.
  • Mobility Management is a procedure to reduce overhead on the E-UTRAN and processing at the UE.
  • MME mobility management
  • the UE can inform the network about the new location whenever it leaves the current tracking area (TA) so that the network can contact the UE in the ECM-IDLE state.
  • This procedure may be called “Tracking Area Update”, which may be called “Routing Area Update” in universal terrestrial radio access network (UTRAN) or GSM EDGE Radio Access Network (GERAN) system.
  • the MME performs the function of tracking the user's location while the UE is in the ECM-IDLE state.
  • the MME transmits a paging message to all base stations (eNodeBs) on the tracking area (TA) where the UE is registered.
  • eNodeBs base stations
  • TA tracking area
  • the base station then begins paging for the UE over a radio interface.
  • a procedure for causing the state of the UE to transition to the ECM-CONNECTED state is performed.
  • This procedure can be called a “Service Request Procedure”. Accordingly, information related to the UE is generated in the E-UTRAN, and all bearers are re-established.
  • the MME is responsible for resetting the radio bearer and updating the UE context on the base station.
  • a mobility management (MM) backoff timer may be further used.
  • the UE may transmit a tracking area update (TAU) to update the TA, and the MME may reject the TAU request due to core network congestion, in which case the MM backoff timer You can provide a time value.
  • the UE may activate the MM backoff timer.
  • TAU tracking area update
  • FIG. 2 is a flowchart illustrating a process of establishing an RRC connection to which the present invention can be applied.
  • the terminal sends an RRC connection request message to the network requesting an RRC connection (S2010).
  • the network sends an RRC connection setup message in response to the RRC connection request (S2020). After receiving the RRC connection configuration message, the terminal enters the RRC connection mode.
  • the UE sends an RRC Connection Setup Complete message used to confirm successful completion of RRC connection establishment to the network (S2030).
  • FIG. 3 is a flowchart illustrating a RRC connection resetting process to which the present invention can be applied.
  • RRC connection reconfiguration is used to modify an RRC connection. It is used to establish / modify / release RBs, perform handovers, set up / modify / release measurements, add / modify / release cells / carriers.
  • the network sends an RRC connection reconfiguration message for modifying the RRC connection to the terminal (S3010).
  • the RRC connection reset message is a command for changing an RRC connection.
  • the RRC connection reset message may convey information about measurement configuration, mobility control, radio resource configuration (including RB, MAC main configuration and physical channel configuration), including associated dedicated NAS information and security configuration.
  • the terminal In response to the RRC connection reconfiguration, the terminal sends an RRC connection reconfiguration complete message used to confirm successful completion of the RRC connection reconfiguration to the network (S3020).
  • the communication environment considered in the embodiments of the present invention includes both multi-carrier support environments.
  • the multicarrier system or carrier aggregation (CA) system used in the present invention is one or more having a bandwidth smaller than the target band when configuring the target broadband to support the broadband
  • the multi-carrier means the aggregation of carriers (or carrier aggregation), wherein the aggregation of carriers means not only merging between contiguous carriers but also merging between non-contiguous carriers.
  • the number of component carriers aggregated between downlink and uplink may be set differently.
  • the case where the number of downlink component carriers (hereinafter referred to as 'DL CC') and the number of uplink component carriers (hereinafter referred to as 'UL CC') is the same is called symmetric aggregation. This is called asymmetric aggregation.
  • carrier aggregation may be used interchangeably with terms such as carrier aggregation, bandwidth aggregation, spectrum aggregation, and the like.
  • Carrier aggregation in which two or more component carriers are combined, aims to support up to 100 MHz bandwidth in an LTE-A system.
  • the bandwidth of the combining carrier may be limited to the bandwidth used by the existing system to maintain backward compatibility with the existing IMT system.
  • the existing 3GPP LTE system supports ⁇ 1.4, 3, 5, 10, 15, 20 ⁇ MHz bandwidth
  • the 3GPP LTE-advanced system i.e., LTE-A
  • the carrier aggregation system used in the present invention may support carrier aggregation by defining a new bandwidth regardless of the bandwidth used in the existing system.
  • the LTE-A system uses the concept of a cell to manage radio resources.
  • the carrier aggregation environment described above may be referred to as a multiple cell environment.
  • a cell is defined as a combination of a downlink resource (DL CC) and an uplink resource (UL CC), but the uplink resource is not an essential element. Accordingly, the cell may be configured with only downlink resources or with downlink resources and uplink resources.
  • DL CC downlink resource
  • UL CC uplink resource
  • the cell may be configured with only downlink resources or with downlink resources and uplink resources.
  • a specific UE When a specific UE has only one configured serving cell, it may have one DL CC and one UL CC, but when a specific UE has two or more configured serving cells, as many DLs as the number of cells Has a CC and the number of UL CCs may be the same or less.
  • the DL CC and the UL CC may be configured on the contrary. That is, when a specific UE has a plurality of configured serving cells, a carrier aggregation environment in which a UL CC has more than the number of DL CCs may be supported. That is, carrier aggregation may be understood as merging two or more cells, each having a different carrier frequency (center frequency of a cell).
  • carrier aggregation may be understood as merging two or more cells, each having a different carrier frequency (center frequency of a cell).
  • the term 'cell' should be distinguished from the 'cell' as an area covered by a generally used base station.
  • Cells used in the LTE-A system include a primary cell (PCell: Primary Cell) and a secondary cell (SCell: Secondary Cell).
  • PCell Primary Cell
  • SCell Secondary Cell
  • P cell and S cell may be used as a serving cell.
  • the UE that is in the RRC_CONNECTED state but the carrier aggregation is not configured or does not support the carrier aggregation, there is only one serving cell composed of the PCell.
  • one or more serving cells may exist, and the entire serving cell includes a PCell and one or more SCells.
  • Serving cells may be configured through an RRC parameter.
  • PhysCellId is a cell's physical layer identifier and has an integer value from 0 to 503.
  • SCellIndex is a short identifier used to identify an SCell and has an integer value from 1 to 7.
  • ServCellIndex is a short identifier used to identify a serving cell (P cell or S cell) and has an integer value from 0 to 7. A value of 0 is applied to the Pcell, and SCellIndex is pre-assigned to apply to the Scell. That is, a cell having the smallest cell ID (or cell index) in ServCellIndex becomes a P cell.
  • the P cell refers to a cell operating on a primary frequency (or primary CC).
  • the UE may be used to perform an initial connection establishment process or to perform a connection re-establishment process and may also refer to a cell indicated in a handover process.
  • the P cell refers to a cell serving as a center of control-related communication among serving cells configured in a carrier aggregation environment. That is, the terminal may receive and transmit a PUCCH only in its own Pcell, and may use only the Pcell to acquire system information or change a monitoring procedure.
  • the Evolved Universal Terrestrial Radio Access (E-UTRAN) uses a higher layer RRC Connection Reconfiguration message including mobility control information to a terminal supporting a carrier aggregation environment for a handover procedure. You can only change it.
  • the S cell may refer to a cell operating on a secondary frequency (or, secondary CC). Only one PCell may be allocated to a specific UE, and one or more SCells may be allocated.
  • the SCell is configurable after the RRC connection is established and can be used to provide additional radio resources.
  • the E-UTRAN may provide all system information related to the operation of the related cell in the RRC_CONNECTED state through a dedicated signal.
  • the change of the system information may be controlled by the release and addition of the related SCell, and at this time, an RRC connection reconfiguration message of a higher layer may be used.
  • the E-UTRAN may perform dedicated signaling having different parameters for each terminal, rather than broadcasting in the related SCell.
  • the E-UTRAN may configure a network including one or more Scells in addition to the Pcells initially configured in the connection establishment process.
  • the Pcell and the SCell may operate as respective component carriers.
  • the primary component carrier (PCC) may be used in the same sense as the PCell
  • the secondary component carrier (SCC) may be used in the same sense as the SCell.
  • FIGS. 4 and 5 are diagrams illustrating an example of a layer 2 structure in carrier aggregation to which the present invention can be applied.
  • FIG. 4 shows an example of a layer 2 structure in carrier aggregation for downlink data transmission
  • FIG. 8 shows a carrier aggregation for uplink data transmission.
  • An example of a layer 2 structure of a is shown.
  • the multi-carriers of the physical layer are only revealed in the MAC layer in order to require one HARQ entity in each serving cell.
  • one transport block is generated for each TTI in each serving cell.
  • Each transport block and its potential HARQ retransmissions are mapped to a single serving cell.
  • FIG. 6 is a diagram illustrating an example of a component carrier and carrier aggregation in a wireless communication system to which the present invention can be applied.
  • Component carriers include a DL CC and an UL CC.
  • One component carrier may have a frequency range of 20 MHz.
  • FIG. 6 (b) shows a carrier aggregation structure used in the LTE_A system.
  • three component carriers having a frequency size of 20 MHz are combined.
  • the number of DL CCs and UL CCs is not limited.
  • the UE may simultaneously monitor three CCs, receive downlink signals / data, and transmit uplink signals / data.
  • the network may allocate M (M ⁇ N) DL CCs to the UE.
  • the UE may monitor only M limited DL CCs and receive a DL signal.
  • the network may give L (L ⁇ M ⁇ N) DL CCs to allocate a main DL CC to the UE, in which case the UE must monitor the L DL CCs. This method can be equally applied to uplink transmission.
  • the linkage between the carrier frequency (or DL CC) of the downlink resource and the carrier frequency (or UL CC) of the uplink resource may be indicated by a higher layer message or system information such as an RRC message.
  • a combination of DL resources and UL resources may be configured by a linkage defined by SIB2 (System Information Block Type2).
  • SIB2 System Information Block Type2
  • the linkage may mean a mapping relationship between a DL CC on which a PDCCH carrying a UL grant is transmitted and a UL CC using the UL grant, and a DL CC (or UL CC) and HARQ ACK on which data for HARQ is transmitted. It may mean a mapping relationship between UL CCs (or DL CCs) through which a / NACK signal is transmitted.
  • FIGS. 7 to 9 are diagrams illustrating an example of a structure of a dual connectivity and a network interface to which the present invention can be applied.
  • the E-UTRAN is provided by a scheduler with two separate RX / TX UEs in RRC_CONNECTED and a non-ideal backhaul via the X2 interface. It supports dual connectivity (DC) operation configured to use radio resources located in two eNBs connected through the PC.
  • DC dual connectivity
  • Dual connectivity can imply control and data separation.
  • control signaling for mobility is provided through the macro cell at the same time that the high-speed data connection is provided through the small cell.
  • ENBs associated with dual connectivity for a particular UE may assume two different roles.
  • one eNB may act as a MeNB or SeNB as shown in FIGS. 7 to 9.
  • the UE may be connected with one MeNB and one SeNB.
  • the MeNB is an eNB that terminates at least one S1-MME in dual connectivity (DC)
  • the SeNB is an eNB that provides additional radio resources for the UE, but is not a master eNB in dual connectivity.
  • the DC configured with the CA means an operation mode of the UE in the RRC connection state, and is composed of a Master Cell Group and a Secondary Cell Group.
  • cell group indicates a group of serving cells associated with a master eNB (MeNB) or a secondary eNB (SeNB) in dual connectivity.
  • MeNB master eNB
  • SeNB secondary eNB
  • a “Master Cell Group (MCG)” is a group of serving cells associated with a MeNB and includes a primary cell (PCell) and optionally one or more secondary cells (SCells) in dual connectivity. .
  • SCG Secondary Cell Group
  • a cell should be distinguished from the “cell” as a general area covered by the eNB. That is, a cell represents a combination of downlink and optionally uplink resources.
  • the link between the carrier frequency of the downlink resource (eg, the center frequency of the cell) and the carrier frequency of the uplink resource is indicated in system information transmitted from the downlink resources.
  • the MCG bearer is a radio protocol located only in MeNB to use only MeNB resources in dual connectivity
  • the SCG bearer is a radio protocol located only in SeNB to use SeNB resources in dual connectivity.
  • split bearer is a radio protocol located in both MeNB and SeNB to use both MeNB and SeNB resources in dual connectivity.
  • FIG 9 shows an example of a user plane structure in dual connectivity.
  • the MeNB does not need to buffer or process packets for the EPS bearers sent by the SeNB.
  • Direct support for local breakout and content caching at SeNB for dual connectivity UEs
  • SeNB mobility visible to CN SeNB mobility visible to CN.
  • Offloading must be performed by the MME and cannot be very dynamic.
  • the interruption such as handover in the SeNB
  • the interruption is changed to transfer between SeNBs (for the bearers handled by SeNB, handover-like interruption at SeNB change with forwarding between SeNBs).
  • logical channel prioritization affects the transmission of uplink data (radio resource allocation is limited to the eNB where the radio bearer terminates).
  • FIG. 9B shows an example of a combination of MeNB and S1-U ending with bearer split in independent RLSs for split bearers.
  • Radio resources are available at the MeNB and SeNB for the same bearer.
  • MeNB -Relaxed requirements for SeNB mobility
  • PDCP is responsible for the reordering of PDCP PDUs for routing and receiving PDCP PDUs towards the eNB for transmission.
  • logical channel prioritization affects handling of RLC retransmissions and RLC status PDUs (limited to the eNB where the corresponding RLC entity resides).
  • SeNB does not support local breakout and content caching.
  • 5G demands to support various real-time application services such as health care, traffic safety, disaster safety, remote medical control, etc.
  • 5G realizes it is awkward for users to provide the internet with the most sensitive touch information of the five senses.
  • the goal is to build an ultra-low latency system with extremely short response times.
  • High-latency, high-reliability services require high reliability by transmitting data packets on short TTIs.
  • a time diversity method and a frequency diversity method may be used.
  • the time diversity method refers to a method in which when the transmitting side transmits the same data several times over a time axis on the time axis, the receiving side may recombine these received signals to obtain good transmission quality.
  • the transmitting side when the transmitting side carries the same data on several frequencies on the frequency axis and transmits the same data, it is possible to prevent fading by selecting a good reception signal or combining different signals using properties having different reception characteristics for each frequency. Means the way.
  • frequency diversity gain can be obtained.
  • DC dual connectivity
  • CA carrier aggregation technology
  • CC component carriers
  • the existing DC and CA are technologies for transmitting different data, and thus cannot transmit or receive the same data for a low delay high reliability service.
  • the present invention proposes a method in which DC and CA technologies can increase data reliability as well as data throughput.
  • DC and CA technology proposes a method of transmitting and receiving a plurality of the same data through the cell / carrier addition procedure.
  • FIG. 10 is a flowchart illustrating an example of transmitting and receiving a plurality of data by adding a new RAT in a multi-RAT environment proposed in the present specification.
  • the serving cell / carrier (or serving base station) may be referred to as a first cell / carrier (or first base station), and the secondary cell / carrier (or secondary base station) is referred to as a second cell / carrier ( Or, it may be called a second base station) or a third cell / carrier (or a third base station).
  • the first cell / carrier may receive information related to redundant transmission of data from the second cell / carrier added in the process of adding the second cell / carrier of the new RAT (S10010).
  • Information related to the redundant transmission of data may include: index information indicating whether the added second cell / carrier supports a copy data transmission / reception function, numerology information, and a bearer indicating a radio bear on which duplicate data is transmitted. May contain information.
  • the neuralology information may include location information indicating a location where a synchronization signal allocated in a radio resource is transmitted.
  • the first cell / carrier transmits information related to redundant transmission of data to the terminal (S10020).
  • the terminal may form a connection after synchronizing with the added second cell / carrier based on the neuralology information included in the information transmitted from the first cell / carrier.
  • the terminal may recognize whether the added second cell / carrier supports the copy data transmission / reception function through the information transmitted from the first cell / carrier.
  • the first cell / carrier transmits control information indicating that a duplicate data transmission / reception function is performed in a second cell / carrier added to the terminal in order to duplicately transmit data for providing a specific service requiring low delay and high reliability. (S10030).
  • the information transmitted and received between the UE and the first cell / carrier in steps S10020 and S10030 may be physical layer control information (for example, downlink control information transmitted through PDCCH / ePDCCH, etc.) or higher layer control information (layer 2 or more). For example, it may be included in the RRC Connection Reconfiguration message and the like and transmitted.
  • step S10010 may be omitted, and information related to the redundant transmission of data of step S10020 may be received from the second cell / carrier. Can be sent to.
  • the second cell / carrier supports a copy data transmission / reception function through the index information transmitted from the first cell / carrier or the second cell / carrier.
  • the terminal transmits / receives a plurality of identical data for the specific service requiring low delay and high reliability with the first cell / carrier and the second cell / carrier. Can not.
  • the terminal may transmit a plurality of pieces of the same data for providing a specific service requiring low delay and high reliability with the first cell / carrier and the second cell / carrier.
  • the plurality of identical data may be composed of one data and at least one copy data replicated using one data.
  • the terminal may transmit and receive specific data for providing a specific service with the first cell / carrier and transmit and receive duplicate data generated using the specific data with the second cell / carrier.
  • 11 is a flowchart illustrating an example of transmitting and receiving a plurality of the same data through the addition of a base station using dual connectivity proposed in the present specification.
  • a base station is added using dual connectivity in a multi-RAT environment, and the added base station, the first base station, and the terminal reduce the delay of data transmission and reception by transmitting and receiving a plurality of identical data for providing a specific service. And reliability can be ensured.
  • the first base station transmits an additional request message for requesting addition of a cell / carrier to the second base station in order to add a cell / carrier using dual connectivity (S11010).
  • the second base station may be a base station supporting a copy data transmission / reception function.
  • the second base station transmits an additional request Acknowledge to the first base station in response to the additional request message (S11020).
  • the additional request Acknowledge may include information related to the redundant transmission of data of step S10010 of FIG. 10.
  • the first base station terminates the procedure if the second base station does not accept the addition of the cell / carrier.
  • the first base station transmits an RRC connection reconfiguration message for adding the cell to the terminal (S11030).
  • the RRC connection reconfiguration message may include a parameter for adding a second base station and information related to redundant transmission of data received from the second base station.
  • the UE may recognize that the second base station is added through the received RRC connection reconfiguration message, and may recognize whether the second base station supports the copy data transmission / reception function based on the index information included in the RRC connection reconfiguration message. have.
  • the terminal may synchronize with the second base station based on the location information of the synchronization signal included in the RRC connection reconfiguration message, it may form a connection.
  • an RRC connection reconfiguration complete message is transmitted to the first base station (S11040).
  • the first base station may know that the cell / carrier addition through the RRC connection reconfiguration procedure is completed through the connection reconfiguration complete message transmitted from the terminal, and informs the second base station of the additional completion message for notifying that the cell / carrier addition has been completed. It transmits (S11050).
  • the terminal may transmit / receive a plurality of pieces of the same data for providing a specific service through the cell / carrier of the first base station and the added cell / carrier of the second base station.
  • the terminal may transmit and receive specific data for providing a specific service through the cell / carrier of the first base station, and transmit and receive duplicate data generated using the specific data through the cell / carrier of the second base station.
  • the terminal in the case of uplink data, the terminal generates at least one identical copy data using data for providing a specific service.
  • the terminal may transmit specific data to the first base station, and transmit at least one copy data generated using the specific data to the second base station.
  • the first base station in the case of downlink data, the first base station generates at least one identical copy data by using data for providing a specific service, and transmits the generated at least one copy data to the second base station.
  • the first base station and the second base station may transmit data and at least one copy data to the terminal.
  • the third base station may be added by performing the same procedure as the steps S11010 to S11050 with the third base station.
  • step S11060 to step S11100 are the same as step S11010 to step S11050, description thereof will be omitted.
  • FIG. 12 is a flowchart illustrating an example of transmitting and receiving a plurality of identical data through cell / carrier addition using carrier aggregation proposed in the present specification.
  • a cell / carrier is added using carrier aggregation, and the added cell / carrier and the first cell and the terminal transmit and receive data by transmitting and receiving a plurality of identical data for providing a specific service. Can reduce the delay and ensure the reliability.
  • the first cell forms an RRC connection with the UE through an RRC connection procedure.
  • the terminal transmits a buffer status report and / or a measurement report message to the second cell in order to add a cell / carrier using carrier aggregation (S12010).
  • the second cell If the second cell satisfies the cell addition condition, the second cell transmits an RRC connection reconfiguration message for adding the cell / carrier to the terminal (S12020).
  • the second cell may be a base station supporting a copy data transmission / reception function.
  • the RRC connection reconfiguration message may include a parameter for adding a cell / carrier of a second cell and information related to redundant transmission of data described with reference to FIG. 10.
  • the UE may recognize that the cell / carrier of the second cell is added through the received RRC connection reconfiguration message, and whether the second cell supports the function of transmitting / receiving duplicate data based on the index information included in the RRC connection reconfiguration message. Can be recognized.
  • an RRC connection reconfiguration complete message is transmitted to the second cell (S12030).
  • the second cell may know that the cell / carrier addition through the RRC connection reconfiguration procedure is completed through the connection reconfiguration complete message transmitted from the UE.
  • the terminal may transmit / receive a plurality of same data for providing a specific service through the cell / carrier of the first cell and the added cell / carrier of the second cell. have.
  • the terminal may transmit and receive specific data for providing a specific service with the first cell / carrier and transmit and receive duplicate data generated using the specific data with the second cell / carrier.
  • the terminal may generate at least one piece of identical copy data using specific data for providing a specific service.
  • the terminal may transmit specific data to the first cell / carrier and transmit at least one copy data generated from the specific data to the second cell / carrier.
  • the first cell in the case of downlink data, the first cell generates at least one identical copy data by using data for providing a specific service, and transmits the generated at least one copy data to the second cell.
  • the first cell and the second cell may transmit data and at least one copy data to the terminal.
  • the cell / carrier of the third cell may be added by performing the same procedure as that of the steps S12010 to S12030 with the third cell.
  • step S12040 to step S12060 are the same as step S12010 to step S12030, description thereof will be omitted.
  • FIG. 13 is a flowchart illustrating another example of transmitting and receiving a plurality of data by adding a new RAT in a multi-RAT environment proposed in the present specification.
  • a second cell / carrier of a new RAT supporting a function for transmitting and receiving a plurality of identical data to a first cell / carrier in a multi-RAT environment is added, and the first cell / carrier or second cell is added.
  • the carrier may transmit and receive a plurality of identical data for providing a specific service requiring low delay and high reliability by activating a function for transmitting and receiving a plurality of identical data of the terminal.
  • the first cell / carrier may receive information related to redundant transmission of data from the second cell / carrier added in the process of adding the second cell / carrier supporting the new RAT (S13010).
  • Information related to redundant transmission of data includes N bit index information indicating whether the added second cell / carrier supports the function of transmitting / receiving duplicate data, numerology information, and radio bearer to which duplicated data is transmitted. It may include bearer information indicating.
  • N means a positive integer greater than zero.
  • Table 1 shows an example of whether or not to support the data transmission / reception function according to the index information value.
  • the index information is information indicating whether or not the corresponding cell / carrier can transmit and receive the same data as the first cell / carrier.
  • the value of the index information is '00', the added cell / carrier supports the copy data transmission / reception function and when the connection state is in the connected state, the copy data transmission / reception function is always activated.
  • the index information When the value of the index information is '01' or '10', it supports the function of transmitting / receiving a duplicate data, and means that the duplicated cell transmit / receive function may be activated according to the radio state of the added second cell / carrier. .
  • the first cell / carrier and the added second cell / carrier can transmit and receive a plurality of identical data with the terminal.
  • the value of the index information is '10', it means that the copy data transmission / reception function is supported, but the copy data transmission / reception function is deactivated. Therefore, the first cell / carrier and the added second cell / carrier cannot transmit and receive a plurality of identical data with the terminal.
  • first cell / carrier and the added second cell / carrier are not physically separated, that is, if they are physically connected, information related to redundant transmission of data may be transferred to an internal operation.
  • the first cell / carrier recognizes whether the second cell / carrier supports the copy data transmission / reception function through the information related to the redundant transmission of data transmitted from the second cell / carrier, and the second cell / carrier added to the terminal. Transmits the capability information related to whether or not the same plurality of data can be transmitted (S13020).
  • the capability information may include index information indicating whether the added second cell / carrier supports a copy data transmission / reception function, numerology information, and bearer information indicating a radio bear on which duplicate data is transmitted. have.
  • the neuralology information may include location information indicating a location where a synchronization signal allocated in a radio resource is transmitted, TTI length information, type information of a RAT, parameters of each layer, and the like.
  • the terminal may form a connection after synchronizing with the added second cell / carrier based on the neuralology information included in the information transmitted from the first cell / carrier.
  • the terminal configures parameters of each layer (eg, -parameters, phyLayerParameters, rf-Parameters, measParameter, etc.) of each layer according to the type of the RAT configured using the capability information, in the c of the UE-EUTRA-Capability field of the UECapabilityInformation message.
  • parameters of each layer eg, -parameters, phyLayerParameters, rf-Parameters, measParameter, etc.
  • the capability information may be transmitted by being included in physical layer control information (eg, downlink control information transmitted through PDCCH / ePDCCH) or higher layer control information (eg, RRC Connection Reconfiguration message, etc.) of layer 2 or more. Can be.
  • physical layer control information eg, downlink control information transmitted through PDCCH / ePDCCH
  • higher layer control information eg, RRC Connection Reconfiguration message, etc.
  • the terminal may recognize whether the added second cell / carrier supports the copy data transmission / reception function through capability information transmitted from the first cell / carrier.
  • the terminal needs to report a specific service requiring low delay and high reliability (for example, to predict an accident in a scenario of an autonomous vehicle or to report an emergency situation around the base station to a nearby base station with high speed and high reliability). If data needs to be transmitted / received), a request message for requesting transmission / reception of a plurality of identical data is transmitted to the first cell / carrier or the second cell / carrier (S13030).
  • the terminal may transmit a request message for activating the copy data transmission / reception function to the first cell / carrier or the second cell / carrier.
  • the terminal transmits a request message requesting activation of the redundant data transmission / reception function to the first cell / carrier, and the first cell / carrier Transmits it to the second cell / carrier.
  • the second cell / carrier activates the redundant data transmission / reception function and transmits a response message indicating that the redundant data transmission / reception function is activated to the first cell / carrier.
  • the first cell / carrier transmits a response message including control information indicating that the redundant data transmission / reception function of the second cell / carrier is activated to the terminal based on the response message received from the second cell / carrier.
  • the terminal may inform the second cell / carrier of the status of the terminal (e.g., buffer status report and / or second cell / carrier). Along with a measurement report of a carrier) and transmits a request message requesting activation of a redundant data transmission / reception function.
  • the second cell / carrier may inform the second cell / carrier of the status of the terminal (e.g., buffer status report and / or second cell / carrier). Along with a measurement report of a carrier) and transmits a request message requesting activation of a redundant data transmission / reception function.
  • the second cell / carrier activates the redundant data transmission / reception function and transmits a response message including control information indicating that the redundant data transmission / reception function is activated to the terminal.
  • the second cell / carrier which wants to transmit / receive a plurality of identical data to provide a specific service is control information (for example, MAC control element instructing activation or deactivation of the redundant data transmission / reception function of the terminal to the first cell / carrier). N-bit indication, etc. included), and the first cell / carrier transmits it to the terminal (S13040).
  • control information for example, MAC control element instructing activation or deactivation of the redundant data transmission / reception function of the terminal to the first cell / carrier.
  • N-bit indication, etc. included N-bit indication, etc. included
  • the terminal activates / deactivates its own redundant data transmission / reception function based on the control information transmitted from the first cell / carrier.
  • control information of the second cell / carrier is transmitted for each cell.
  • control information of all added second cells may be transmitted in one first cell.
  • the terminal activates its own redundant data transmission function and the first cell / carrier and the added second cell / carrier.
  • the carrier transmits and receives a plurality of the same data for providing a specific service (S13050).
  • the terminal transmits and receives specific data for providing a specific service with the first cell / carrier and transmits and receives duplicate data generated using the specific data with the second cell / carrier.
  • the terminal In the case of uplink data, the terminal generates at least one identical copy data using specific data for providing a specific service.
  • the terminal may transmit specific data to the first cell / carrier and transmit at least one copy data generated from the specific data to the second cell / carrier.
  • the first cell In the case of downlink data, the first cell generates at least one identical copy data using data for providing a specific service, and transmits the generated at least one copy data to the added second cell.
  • the first cell and the second cell transmit data and at least one copy data to the terminal.
  • the terminal deactivates the redundant data transmission function of the terminal and the first cell / carrier and the added second cell.
  • the terminal may receive capability information from a plurality of second cells / carriers, and may add only some of the plurality of second cells / carriers by comparing the capability information.
  • the redundant data transmission / reception function of the terminal and the second cell / carrier Can be disabled.
  • the capability information transmitted from the plurality of second cells / carriers may further include available resource information of each of the second cells / carriers, channel state information indicating a channel state, and the like.
  • FIG. 14 is a flowchart illustrating still another example of transmitting and receiving a plurality of identical data through the addition of a base station using dual connectivity proposed in the present specification.
  • a plurality of identical data can be transmitted and received.
  • steps S14010 to S14050 are the same as steps S11010 to S11050 of FIG. 11, description thereof will be omitted.
  • the terminal adding the cell / carrier of the second base station through steps S14010 to S14050 transmits a request message requesting transmission and reception of duplicate data to the first base station when data of a specific service requiring low delay and high reliability occurs. And, the first base station transmits it to the second base station (S14060, S14070).
  • the terminal transmits a request message for activating the redundant data transmission / reception function of the second base station to the second base station through the first base station.
  • the second base station Upon receiving the request message from the terminal, the second base station activates its redundant data transmission / reception function and transmits a request acknowledgment indicating that the redundant data transmission / reception function is activated to the terminal through the first base station (S14080 and S14090).
  • the terminal may recognize that the redundant data transmission / reception function of the second base station is activated through the request acknowledgment.
  • the first base station transmits control information indicating activation or deactivation of the redundant data transmission / reception function of the terminal, and the terminal activates or deactivates the redundant data transmission / reception function according to the received control information.
  • the terminal when the first cell / carrier transmits control information indicating activation of the redundant data transmission function of the terminal to the terminal (S14100), the terminal activates its own redundant data transmission function and the cell / carrier of the first base station. And transmit and receive a plurality of identical data for providing a specific service through the added cell / carrier of the second base station (S14110).
  • the terminal In the case of uplink data, the terminal generates at least one identical copy data using specific data for providing a specific service.
  • the terminal may transmit specific data to the first base station and transmit at least one copy data generated from the specific data to the second base station.
  • the first base station In the case of downlink data, the first base station generates at least one identical copy data by using data for providing a specific service, and transmits the generated at least one copy data to the added second base station.
  • the first base station and the second base station transmit data and at least one copy data to the terminal.
  • the terminal receives control information indicating deactivation of the redundant data transmission function of the terminal from the first base station (S14120), the terminal deactivates its redundant data transmission function and the first base station and the added second base station.
  • the transmission and reception of a plurality of identical data for providing a specific service with the base station is stopped (S14130).
  • FIG. 15 is a flowchart illustrating still another example of transmitting and receiving a plurality of identical data through cell / carrier addition using carrier aggregation proposed in the present specification.
  • a plurality of identical cells for adding a second cell / carrier using carrier aggregation in a multi-RAT environment and for providing a specific service with a cell / carrier and a first cell / carrier to which the terminal is actively added are provided.
  • a plurality of identical data can be transmitted and received.
  • the first cell forms an RRC connection with the UE through an RRC connection procedure.
  • the second cell transmits an RRC connection reconfiguration message for the addition of the cell / carrier to the terminal (S15010).
  • the second cell may be a cell that supports a copy data transmission / reception function.
  • the RRC connection reconfiguration message may include a parameter for adding a cell / carrier of a second cell and information related to redundant transmission of data described with reference to FIG. 10.
  • the UE may recognize that the cell / carrier of the second cell is added through the received RRC connection reconfiguration message, and whether the second cell supports the function of transmitting / receiving duplicate data based on the index information included in the RRC connection reconfiguration message. Can be recognized.
  • an RRC connection reconfiguration complete message is transmitted to the second cell (S15020).
  • the second cell may know that the addition of the cell / carrier is completed through the RRC connection reconfiguration procedure through the connection reconfiguration complete message transmitted from the UE.
  • the terminal transmits a buffer status report message and / or a measurement report message for requesting transmission and reception of duplicate data to the added second cell (S15030).
  • the terminal transmits a request message for activating the redundant data transmission / reception function of the second cell to the second cell.
  • the second cell Upon receiving the request message from the terminal, the second cell activates its own redundant data transmission / reception function, and transmits a request acknowledgment indicating that the redundant data transmission / reception function is activated (S15040).
  • the terminal may recognize that the redundant data transmission / reception function of the second cell is activated through the request acknowledgment.
  • the first cell transmits control information indicating activation or deactivation of the redundant data transmission / reception function of the terminal, and the terminal activates or deactivates the redundant data transmission / reception function thereof according to the received control information.
  • the terminal activates its own redundant data transmission function, the cell / carrier and A plurality of identical data for providing a specific service is transmitted and received through the added cell / carrier of the second cell (S15060).
  • the terminal In the case of uplink data, the terminal generates at least one identical copy data using specific data for providing a specific service.
  • the terminal may transmit specific data to the first cell and transmit at least one copy data generated from the specific data to the second cell.
  • the first cell In the case of downlink data, the first cell generates at least one identical copy data using data for providing a specific service, and transmits the generated at least one copy data to the added second cell.
  • the first cell and the second cell transmit data and at least one copy data to the terminal.
  • control information transmitted from the first cell receives control information indicating deactivation of the redundant data transmission function of the terminal (S15070)
  • the terminal deactivates its own redundant data transmission function and the first cell. And the transmission and reception of the plurality of the same data for providing a specific service and the added second cell (S15080).
  • 16 is a flowchart illustrating an example of a method for transmitting and receiving a plurality of identical data by adding a base station or a cell by the terminal proposed in the present specification.
  • the terminal receives capability information related to the first specific function of the second base station through a procedure of adding a cell / carrier of the second base station from the first base station (S16010).
  • the first specific function means a function of transmitting and receiving the same data as the first base station by the second base station
  • the capability information includes the same information as the capability information described with reference to FIGS. 13 to 15.
  • the capability information may be transmitted by being included in physical layer control information (eg, downlink control information transmitted through PDCCH / ePDCCH) or higher layer control information (eg, RRC Connection Reconfiguration message, etc.) of layer 2 or more. Can be.
  • physical layer control information eg, downlink control information transmitted through PDCCH / ePDCCH
  • higher layer control information eg, RRC Connection Reconfiguration message, etc.
  • the terminal synchronizes with the second base station and forms a connection in order to add the cell / carrier of the second base station based on the capability information received from the first base station (S16020).
  • the terminal receives first control information indicating whether the first specific function of the second base station is activated from the first base station (S16030).
  • the control information may be transmitted by being included in physical layer control information (for example, downlink control information transmitted through PDCCH / ePDCCH) or higher layer control information (for example, RRC Connection Reconfiguration message, etc.) of layer 2 or more. Can be.
  • the terminal may generate at least one copy data from the specific data for providing a specific service (for example, a service requiring low delay and high reliability).
  • a specific service for example, a service requiring low delay and high reliability.
  • the terminal transmits specific data to the first base station (S16040), and transmits at least one copy data generated from the specific data to the second base station according to whether the first specific function is activated (S16050).
  • the at least one copy data is generated through the same method as the uplink data described with reference to FIGS. 13 and 16.
  • 17 is a diagram illustrating an example of an internal block diagram of a wireless device to which the present invention can be applied.
  • the wireless device may be a base station and a UE, and the base station includes both a macro base station and a small base station.
  • the base station 1710 and the UE 1720 include a communication unit (transmitter / receiver unit, RF unit, 1713, 1723), processor 1711, 1721, and memory 1712, 1722.
  • a communication unit transmitter / receiver unit, RF unit, 1713, 1723
  • processor 1711, 1721, and memory 1712, 1722 included in the base station 1710 and the UE 1720.
  • the base station and the UE may further include an input unit and an output unit.
  • the communication units 1713 and 1723, the processors 1711 and 1721, the input unit, the output unit, and the memory 1712 and 1722 are functionally connected to perform the method proposed in the present specification.
  • the communication unit transmitter / receiver unit or RF unit, 1713, 1723
  • the communication unit receives the information generated from the PHY protocol (Physical Layer Protocol)
  • the received information is transferred to the RF-Radio-Frequency Spectrum, filtered, and amplified.
  • the communication unit functions to move an RF signal (Radio Frequency Signal) received from the antenna to a band that can be processed by the PHY protocol and perform filtering.
  • the communication unit may also include a switch function for switching the transmission and reception functions.
  • Processors 1711 and 1721 implement the functions, processes, and / or methods proposed herein. Layers of the air interface protocol may be implemented by a processor.
  • the processor may be represented by a controller, a controller, a control unit, a computer, or the like.
  • the memories 1712 and 1722 are connected to a processor and store protocols or parameters for performing an uplink resource allocation method.
  • Processors 1711 and 1721 may include application-specific integrated circuits (ASICs), other chipsets, logic circuits, and / or data processing devices.
  • the memory may include read-only memory (ROM), random access memory (RAM), flash memory, memory card, storage medium and / or other storage device.
  • the communication unit may include a baseband circuit for processing a wireless signal.
  • the above-described technique may be implemented as a module (process, function, etc.) for performing the above-described function.
  • the module may be stored in memory and executed by a processor.
  • the memory may be internal or external to the processor and may be coupled to the processor by various well known means.
  • the output unit (display unit or display unit) is controlled by a processor and outputs information output from the processor together with a key input signal generated at the key input unit and various information signals from the processor.
  • Orientation-based device discovery method is not limited to the configuration and method of the embodiments described as described above, the embodiments are all or part of each of the embodiments is optional so that various modifications can be made It may be configured in combination.
  • the direction-based device search method of the present specification may be implemented as processor-readable code in a processor-readable recording medium provided in a network device.
  • the processor-readable recording medium includes all kinds of recording devices that store data that can be read by the processor. Examples of the processor-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like, and may also be implemented in the form of a carrier wave such as transmission over the Internet. .
  • the processor-readable recording medium can also be distributed over network coupled computer systems so that the processor-readable code is stored and executed in a distributed fashion.
  • the RRC connection method has been described with reference to an example applied to the 3GPP LTE / LTE-A system.
  • the RRC connection method may be applied to various wireless communication systems in addition to the 3GPP LTE / LTE-A system.

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Abstract

La présente invention concerne un procédé et un dispositif d'émission de données par un terminal dans un système de communication sans fil. La présente invention peut concerner un procédé et un dispositif qui reçoivent, en provenance d'une première station de base, des informations de capacité associées à une première fonction spécifique d'une deuxième station de base; établissent une connexion avec la deuxième station de base d'après les informations de capacité; reçoivent, en provenance de la première station de base, des premières informations de commande indiquant si la première fonction spécifique de la deuxième station de base est activée ou non; envoient des données spécifiques à la première station de base; et envoient des données dupliquées à la deuxième station de base suivant que la première fonction spécifique a été activée ou non.
PCT/KR2017/006603 2016-06-24 2017-06-22 Procédé d'émission et de réception de données dans un système de communication sans fil et dispositif pour le prendre en charge WO2017222324A1 (fr)

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