WO2014182131A1 - Procédé permettant de configurer un identifiant de terminal dans un système de communication sans fil supportant la double connectivité et appareil associé - Google Patents

Procédé permettant de configurer un identifiant de terminal dans un système de communication sans fil supportant la double connectivité et appareil associé Download PDF

Info

Publication number
WO2014182131A1
WO2014182131A1 PCT/KR2014/004184 KR2014004184W WO2014182131A1 WO 2014182131 A1 WO2014182131 A1 WO 2014182131A1 KR 2014004184 W KR2014004184 W KR 2014004184W WO 2014182131 A1 WO2014182131 A1 WO 2014182131A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
rnti
terminal
dual connectivity
small
Prior art date
Application number
PCT/KR2014/004184
Other languages
English (en)
Korean (ko)
Inventor
권기범
안재현
허강석
Original Assignee
주식회사 팬택
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
Application filed by 주식회사 팬택 filed Critical 주식회사 팬택
Publication of WO2014182131A1 publication Critical patent/WO2014182131A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
    • H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B

Definitions

  • the present invention relates to wireless communication, and more particularly, to a method and apparatus for configuring a terminal identifier in a wireless communication system supporting dual connectivity.
  • Cellular is a concept proposed to overcome the limitations of coverage area, frequency and subscriber capacity. This is a method of providing a call right by replacing a high power single base station with a plurality of low power base stations.
  • adjacent cells are assigned different frequencies, and two cells that are sufficiently far apart from each other and do not cause interference can use the same frequency band to spatially reuse frequencies. To make it possible.
  • a multiple component carrier system refers to a wireless communication system capable of supporting carrier aggregation.
  • Carrier aggregation is a technique for efficiently using fragmented small bands.
  • a base station uses a logically large band by grouping a plurality of physically continuous or non-continuous bands in the frequency domain. It is intended to produce the same effect.
  • the multi-component carrier system supports a plurality of component carriers (CCs) distinguished in the frequency domain.
  • the component carrier includes an uplink component carrier used for uplink and a downlink component carrier used in downlink.
  • One serving cell may be configured by combining the downlink component carrier and the uplink component carrier. Alternatively, one serving cell may be configured only with a downlink component carrier.
  • a macro cell In a heterogeneous network environment, a macro cell is a large coverage cell, and a small cell such as a femto cell and a pico cell is a small coverage cell. Coverage overlap occurs between multiple macro cells and small cells in a heterogeneous network environment.
  • dual connectivity is used as a cell planning technique for distributing excessive loads or loads requiring specific QoS to small cells without handover procedure and efficiently transmitting data.
  • the UE transmits and receives data by wirelessly connecting two or more different base stations (for example, a macro base station including a macro cell and a small base station including a small cell) through the same or different frequency bands. can do.
  • C-RNTI Cell-Radio Network Temporary Identifier
  • 3GPP 3rd Generation Partnership Project
  • LTE Long Term Evolution
  • the UE acquires Temporary C-RNTI through a contention based radnom access procedure that proceeds when establishing a Radio Resource Control (RRC) connection for the first time, and then eliminates contention. (contention resolution)
  • RRC Radio Resource Control
  • the C-RNTI is allocated to the UE.
  • the C-RNTI allocated by the above procedure is not changed until the RRC connection of the terminal is released or the terminal is handed over to another serving cell.
  • C-RNTI operates independently for each base station scheduler.
  • the C-RNTI is a terminal in a dual connectivity situation. May cause conflicts. Therefore, a new method for allocating C-RNTI to a terminal is required in a wireless communication system supporting dual connectivity.
  • An object of the present invention is to provide a method and apparatus for configuring a terminal identifier in a wireless communication system supporting dual connectivity.
  • Another technical problem of the present invention is to provide a collision avoidance method of C-RNTI in a wireless communication system supporting dual connectivity.
  • Another technical problem of the present invention is to configure different C-RNTI for each base station connected to a terminal for establishing dual connectivity.
  • Another technical problem of the present invention is to change a C-RNTI of another terminal for a terminal for establishing dual connectivity.
  • Another technical problem of the present invention is to classify the C-RNTI range that can be used in the base stations for establishing the dual connectivity.
  • a C-RNTI Cell-Radio Network Temporary Identifier
  • the method may include receiving, by the terminal, a measurement report including a result of performing measurement on a small cell of a small eNB from the terminal, and receiving a dual connectivity request message generated based on the measurement report. And transmitting the RRC connection reconfiguration message for the dual connectivity configuration to the terminal, wherein the terminal is configured to receive the macro base station in a dual connectivity situation. It is characterized in that the C-RNTI for and the C-RNTI for the small base station is allocated.
  • a C-RNTI allocation method for collision avoidance performed by a small base station in a wireless communication system supporting dual connectivity.
  • the method includes receiving a dual connectivity request message from a macro base station, controlling C-RNTI allocation for the small base station in consideration of collision avoidance, and transmitting a dual connectivity response message to the macro base station;
  • the C-RNTI for the macro base station and the C-RNTI for the small base station are allocated to a terminal configured with dual connectivity.
  • a C-RNTI allocation method for collision avoidance performed by a terminal in a wireless communication system supporting dual connectivity.
  • the method includes transmitting to the macro base station a measurement report including a result of performing measurements on a small known small cell, receiving an RRC connection reconfiguration message for dual connectivity from the macro base station, wherein The terminal is assigned a C-RNTI for the macro base station and a C-RNTI for the small base station in a dual connectivity situation.
  • the C-RNTI value of the terminal constituting the dual connection may be allocated.
  • FIG. 1 shows a wireless communication system to which the present invention is applied.
  • FIG. 2 is a block diagram illustrating a radio protocol architecture for a user plane.
  • FIG. 3 is a block diagram illustrating a radio protocol structure for a control plane.
  • FIG. 4 shows an example of a dual connection of a terminal applied to the present invention.
  • 5 is an example of a C-RNTI collision phenomenon in a wireless communication system to which a dual connectivity scheme is applied.
  • FIG. 6 shows an example of a dual connectivity configuration procedure according to the present invention.
  • FIG. 7 is a flowchart of a C-RNTI collision avoidance method performed by a macro base station in a wireless communication system supporting dual connectivity according to the present invention.
  • FIG. 8 is a flowchart of a C-RNTI collision avoidance method performed by a small base station in a wireless communication system supporting dual connectivity according to the present invention.
  • FIG. 9 is a flowchart illustrating a C-RNTI collision avoidance method performed by a terminal in a wireless communication system supporting dual connectivity according to the present invention.
  • FIG. 10 is a block diagram of a macro base station, a small base station and a terminal for C-RNTI collision avoidance in a wireless communication system supporting dual connectivity according to the present invention.
  • the present specification describes a wireless communication network
  • the operation performed in the wireless communication network is performed in the process of controlling the network and transmitting data in the system (for example, the base station) that is in charge of the wireless communication network, or the corresponding wireless Work may be done at the terminal coupled to the network.
  • E-UMTS Evolved-Universal Mobile Telecommunications System
  • LTE Long Term Evolution
  • LTE-A Advanced
  • Wireless communication systems are widely deployed to provide various communication services such as voice, packet data, and the like.
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single Carrier-FDMA
  • OFDM-FDMA OFDM-TDMA
  • various multiple access schemes such as OFDM-CDMA may be used.
  • 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
  • the E-UTRAN includes a base station (BS) 20 that provides a control plane and a user plane to a user equipment (UE).
  • the user plane is a protocol stack for user data transmission
  • the control plane is a protocol stack for control signal transmission.
  • the terminal 10 may be fixed or mobile and may be called by other terms such as mobile station (MS), advanced MS (AMS), user terminal (UT), subscriber station (SS), and wireless device (Wireless Device). .
  • the base station 20 generally refers to a station communicating with the terminal 10, and includes an evolved-NodeB (eNodeB), a Base Transceiver System (BTS), an Access Point, an femto-eNB, It may be called other terms such as a pico-eNB, a home eNB, and a relay.
  • the base station 20 may provide at least one cell to the terminal.
  • the cell may mean a geographic area where the base station 20 provides a communication service or may mean a specific frequency band.
  • the cell may mean a downlink frequency resource and an uplink frequency resource. Alternatively, the cell may mean a combination of a downlink frequency resource and an optional uplink frequency resource.
  • the base stations 20 may be connected to each other through an X2 interface.
  • the base station 20 is connected to a Serving Gateway (S-GW) through an MME (Mobility Management Entity) and an S1-U through an Evolved Packet Core (EPC) 30, more specifically, an S1-MME through an S1 interface.
  • S-GW Serving Gateway
  • MME Mobility Management Entity
  • EPC Evolved Packet Core
  • S1 interface exchanges OAM (Operation and Management) information for supporting the movement of the terminal 10 by exchanging signals with the MME.
  • OAM Operaation and Management
  • EPC 30 includes MME, S-GW and P-GW (Packet Data Network-Gateway).
  • the MME has access information of the terminal 10 or information on the capability of the terminal 10, and this information is mainly used for mobility management of the terminal 10.
  • the S-GW is a gateway having an E-UTRAN as an endpoint
  • the P-GW is a gateway having a PDN (Packet Data Network) as an endpoint.
  • Integrating the E-UTRAN and the EPC 30 may be referred to as an EPS (Evoled Packet System), and the traffic flows from the radio link that the terminal 10 connects to the base station 20 to the PDN connecting to the service entity are all IP. It works based on (Internet Protocol).
  • EPS Evoled Packet System
  • the radio interface between the terminal and the base station is called a Uu interface.
  • Layers of the radio interface protocol between the terminal and the network are based on the lower three layers of the Open System Interconnection (OSI) reference model, which is widely known in communication systems.
  • OSI Open System Interconnection
  • L2 second layer
  • L3 third layer
  • the RRC Radio Resource Control
  • the RRC layer located in the third layer plays a role of controlling radio resources between the terminal and the network.
  • the RRC layer exchanges an RRC message between the terminal and the base station.
  • FIG. 2 is a block diagram showing a radio protocol architecture for a user plane
  • FIG. 3 is a block diagram showing a radio protocol architecture for a control plane.
  • the user plane is a protocol stack for user data transmission
  • the control plane is a protocol stack for control signal transmission.
  • a physical layer (PHY) layer provides an information transfer service to a higher layer using a physical channel.
  • the physical layer is connected to a medium access control (MAC) layer, which is an upper layer, through a transport channel.
  • MAC medium access control
  • Data is transmitted through a transport channel between the MAC layer and the physical layer. Transport channels are classified according to how data is transmitted over the air interface.
  • data is transmitted through a physical channel between different physical layers (ie, between physical layers of a transmitter and a receiver).
  • the physical channel may be modulated by an orthogonal frequency division multiplexing (OFDM) scheme and utilizes time and frequency as radio resources.
  • OFDM orthogonal frequency division multiplexing
  • the physical downlink control channel (PDCCH) of the physical channel informs the UE of resource allocation of a paging channel (PCH) and downlink shared channel (DL-SCH) and hybrid automatic repeat request (HARQ) information related to the DL-SCH.
  • the PDCCH may carry an uplink scheduling grant informing the UE of resource allocation of uplink transmission.
  • a physical control format indicator channel (PCFICH) informs the UE of the number of OFDM symbols used for PDCCHs and is transmitted every subframe.
  • the PHICH physical hybrid ARQ Indicator Channel
  • the physical uplink control channel (PUCCH) carries uplink control information such as HARQ ACK / NAK, scheduling request, and CQI for downlink transmission.
  • a physical uplink shared channel (PUSCH) carries an uplink shared channel (UL-SCH).
  • the MAC layer may perform multiplexing or demultiplexing into a transport block provided as a physical channel on a transport channel of a MAC service data unit (SDU) belonging to the logical channel and mapping between the logical channel and the transport channel.
  • SDU MAC service data unit
  • the MAC layer provides a service to a Radio Link Control (RLC) layer through a logical channel.
  • RLC Radio Link Control
  • the logical channel may be divided into a control channel for transmitting control region information and a traffic channel for delivering user region information.
  • Functions of the RLC layer include concatenation, segmentation, and reassembly of RLC SDUs.
  • the RLC layer In order to guarantee the various quality of service (QoS) required by the radio bearer (RB), the RLC layer has a transparent mode (TM), an unacknowledged mode (UM), and an acknowledged mode (Acknowledged Mode). Three modes of operation (AM).
  • Functions of the Packet Data Convergence Protocol (PDCP) layer in the user plane include delivery of user data, header compression, and ciphering.
  • Functions of the PDCP layer in the user plane include the transfer of control plane data and encryption / integrity protection.
  • PDCP Packet Data Convergence Protocol
  • the RRC layer is responsible for the control of logical channels, transport channels, and physical channels in connection with configuration, re-configuration, and release of RBs.
  • RB means a logical path provided by the first layer (PHY layer) and the second layer (MAC layer, RLC layer, PDCP layer) for data transmission between the terminal and the network. Or it may mean a logical path provided by the RRC layer, PDCP layer.
  • the configuration of the RB means a process of defining characteristics of a radio protocol layer and a channel to provide a specific service, and setting each specific parameter and operation method.
  • the RB may be further classified into a signaling RB (SRB) and a data RB (DRB).
  • SRB signaling RB
  • DRB data RB
  • the NAS layer is located above the RRC layer and performs functions such as session management and mobility management.
  • the UE If there is an RRC connection between the RRC layer of the UE and the RRC layer of the E-UTRAN, the UE is in an RRC connected state, otherwise it is in an RRC idle state. do.
  • a terminal In order for a terminal to transmit user data (eg, an IP packet) to an external internet network or to receive user data from an external internet network, the terminal exists between mobile communication network entities existing between the terminal and the external internet network. Resources must be allocated to different paths. Thus, a path in which resources are allocated between mobile communication network entities and data transmission and reception is possible is called a bearer.
  • the downlink transmission channel for transmitting data from the network to the UE includes a BCH (Broadcast Channel) for transmitting system information and a downlink shared channel (SCH) for transmitting user traffic or control messages.
  • Traffic or control messages of a downlink multicast or broadcast service may be transmitted through a downlink SCH or may be transmitted through a separate downlink multicast channel (MCH).
  • the uplink transport channel for transmitting data from the terminal to the network includes a random access channel (RACH) for transmitting an initial control message and an uplink shared channel (SCH) for transmitting user traffic or control messages.
  • RACH random access channel
  • SCH uplink shared channel
  • BCCH broadcast control channel
  • PCCH paging control channel
  • CCCH common control channel
  • MCCH multicast control channel
  • MTCH multicast traffic
  • the physical channel is composed of several symbols in the time domain and several sub-carriers in the frequency domain.
  • One sub-frame consists of a plurality of OFDM symbols in the time domain.
  • One subframe consists of a plurality of resource blocks, and one resource block consists of a plurality of symbols and a plurality of subcarriers.
  • each subframe may use specific subcarriers of specific symbols (eg, the first symbol) of the corresponding subframe for the physical downlink control channel (PDCCH).
  • the transmission time interval (TTI) which is a unit time for transmitting data, is 1 ms corresponding to one subframe.
  • C-RNTI Cell Radio Network Temporary Identifier
  • the UE may be allocated a C-RNTI through a random access (RA) procedure during an RRC connection establishment procedure.
  • the terminal transmits the MSG1 including the random access preamble to the base station.
  • the base station transmits an MSG2 including a temporary C-RNTI and an uplink grant to the terminal.
  • the terminal transmits the MSG3 including the PUSCH including the RRC connection establishment request message to the base station.
  • the base station scrambles the MSG4 including the PDCCH including the terminal ID (48-bit) information for contention resolution with the received temporary C-RNTI and transmits it to the terminal.
  • the terminal ID information for contention resolution matches, the terminal converts the temporary C-RNTI into a C-RNTI and recognizes it.
  • the source base station may include the C-RNTI provided from the target base station in the mobility control information (MCI) to transmit to the terminal through a handover command.
  • MCI mobility control information
  • the C-RNTI allocated by the above procedures is not changed until the RRC connection of the terminal is released or the terminal is handed over to another serving cell.
  • FIG. 4 shows an example of dual connectivity of a terminal applied to an embodiment of the present invention.
  • the terminal may receive a service through a different frequency band from a small base station including only at least one small cell and a macro base station including only at least one macro cell. This is also called a dual connection of the terminal.
  • the macro base station may be called an anchor base station or a master base station or a primary base station
  • the small base station may be called an assisting base station or a secondary base station.
  • a base station with a low transmission power, such as a small base station, is also referred to as a low power node (LPN).
  • LPN low power node
  • a base station including a small cell (called a small base station) and a base station including a macro cell (called a macro base station) use different frequency bands (for example, a small base station uses F1).
  • the frequency band is used and the macro base station uses the F2 frequency band) or the small base station and the macro base station use the same frequency band.
  • the terminal may receive the service through the macro cell from the macro base station and at the same time receive the service through the small cell from the small base station. That is, the terminal may be provided with a service through each serving cell of two or more base stations.
  • a terminal configured with a CA is the same (one) with respect to a PDCCH or an enhanced PDCCH (EPDCCH) received through a plurality of serving cells.
  • C-RNTI was used. That is, one C-RNTI is allocated to one base station of the terminal.
  • the terminal may be connected to two or more different base stations to receive a service. In this case, the C-RNTI operates independently for each base station scheduler.
  • C-RNTI may be independently operated by two or more different base stations of a wireless communication system to which a dual connectivity scheme supporting a wireless connection between a plurality of base stations and a single terminal is applied.
  • a dual connectivity scheme supporting a wireless connection between a plurality of base stations and a single terminal is applied.
  • collisions may occur when different base stations (eg, macro base stations and small base stations) allocate C-RNTIs to terminals.
  • 5 is an example of a C-RNTI collision phenomenon in a wireless communication system to which a dual connectivity scheme is applied.
  • UE 1 501 has an RRC connection setup with a small base station 530 located in an f1 frequency band, and UE 1 501 has been assigned an R-RC connection setup with the small base station 530.
  • the RNTI value is 100.
  • the terminal 2 502 has an RRC connection setup with the macro base station 560 located in the f2 frequency band, and the C-RNTI value allocated when establishing the RRC connection with the macro base station 560 may also be 100.
  • the scheduler in each base station may independently determine a C-RNTI to be allocated for each UE that performs RRC connection establishment with the corresponding base station, and a range of RNTI values that can be allocated to the C-RNTI is determined for each base station. They can overlap the same or very wide ranges.
  • the range of RNTI values may be set as follows.
  • RA-RNTI is used for random access response
  • ring-scheduling RNTI is used for semi-continuously scheduled unicast transmission
  • TPC-PUCCH-RNTI and TPC-PUSCH-RNTI are physical layer uplinks.
  • M-RNTI is used for multicast control channel (MCCH) information change notification
  • P-RNTI is used for paging and system information change notification
  • SI-RNTI is used for broadcasting system information.
  • the C-RNTI allocated to the terminal in the base station may be any one of the values of 0001-003C or 003D-FFF3 as exemplified in Table 1. Therefore, the same C-RNTI value as the C-RNTI value assigned to the terminal in one base station may be allocated to the other terminal in the other base station.
  • the terminal 2 502 may be duplexed with the small base station 530. Due to the request for connection, additional connection establishment between the terminal 2 502 and the small base station 530 may be performed. In this case, after additional connection establishment between the terminal 2 (502) and the small base station 530, the C-RNTI to receive the PDCCH information for uplink / downlink resource allocation in the small cell serving as the serving cell of the small base station 530 Must be assigned. In this case, a problem may occur when allocating the same C-RNTI value as in the case of the existing CA.
  • the terminal 2 502 allocates 100 equal to the C-RNTI value for the macro cell to the C-RNTI value for the small cell, the C of the terminal 1 501 previously connected to the small base station 530 is allocated. A conflict with the -RNTI value may occur.
  • the small base station 530 transmits the PDCCH scrambled to the terminal 1 501 with the C-RNTI value 100, the terminal 2 502 as well as the terminal 1 501 decodes the PDCCH.
  • the 501 and the terminal 2 502 may operate based on the same uplink / downlink resource allocation information.
  • a C-RNTI is allocated to a terminal, and thus a new method for avoiding collision is required.
  • FIG. 6 shows an example of a dual connectivity configuration procedure according to an embodiment of the present invention.
  • a terminal is connected to an RRC with a macro base station and is allocated a C-RNTI (for example, a macro C-RNTI) for the macro base station.
  • C-RNTI for example, a macro C-RNTI
  • the terminal performs a measurement report to the macro base station (S600).
  • the measurement report includes the measurement result for the small cell. This may be the case where the terminal enters the service area of the small cell in the small base station.
  • the terminal may report the result of performing the measurement on the small cell to the macro base station based on the measurement report configuration information configured in the macro base station to the macro base station.
  • the UE performs measurement to determine the existence of neighbor cells.
  • neighboring cells present in the intra-frequency transmit a signal through the same frequency band as the current serving cell. Therefore, while transmitting and receiving with the serving cell, it is possible to measure the neighboring cells at the same time.
  • the terminal stops transmission and reception with the serving cell at present and retunes the RF chain. Receive a signal for a frequency band that is determined to be present.
  • the RF chain refers to the portion of the antenna combined with the filter and power amp.
  • the measurement report may be performed through a measurement report message.
  • the measurement report message may include reference signal received power (RSRP), reference signal received quality (RSRQ) values, physical cell ID (PCI), and cell global ID (CGI). Can be.
  • RSRP reference signal received power
  • RSRQ reference signal received quality
  • PCI physical cell ID
  • CGI cell global ID
  • the macro base station may determine whether to configure a dual connection with the small base station for the terminal based on the measurement report. If the macro base station determines to configure the dual connection, generates a dual connection request message and transmits to the small base station (S610). The dual connectivity request message can be transmitted to the small base station through the X2 interface.
  • the small base station generates a dual connectivity response message based on the dual connectivity request message and transmits it to the macro base station (S620).
  • the dual connectivity response message may be transmitted to the macro base station through the X2 interface.
  • a separate C-RTNI value for the small base station may or may not be included in the dual connectivity response message. This will be described later.
  • the macro base station configures dual connectivity to the terminal through the RRC connection reconfiguration procedure (S630-1).
  • the small C-RNTI value is included in an RRC connection reconfiguration message that the macro base station transmits to the terminal to configure the dual connectivity. It may be transmitted to the terminal.
  • the small base station may configure a dual connection to the terminal through a direct RRC connection reconfiguration procedure (S630-2).
  • the C-RNTI for the small base station may be included in an RRC connection reconfiguration message transmitted by the small base station to the terminal.
  • the dual connectivity terminal may receive the data service through the small cell of the small base station as well as the macro cell of the macro base station (S640).
  • the present invention proposes C-RNTI allocation schemes for collision avoidance in a wireless communication system supporting dual connectivity.
  • a terminal for configuring dual connectivity may configure different C-RNTI for each base station to which the connection is established. That is, multiple or dual C-RNTI may be configured in the terminal.
  • the macro C-RNTI and the small C-RNTI may be divided and configured in the terminal.
  • the C-RNTI allocated for the small base station may be included in a dual connectivity response message transmitted by the small base station in the S620 procedure described above with reference to FIG. 6 and transmitted to the macro base station. That is, the dual connectivity response message may include a C-RNTI (for example, a small C-RNTI) for the small base station.
  • the C-RNTI (macro C-RNTI) value allocated for the macro base station (or anchor base station) and the C-RNTI allocated for the small base station (or assisting base station) in S630-1 or S630-2 of FIG. 6.
  • the (small C-RNTI) values may be the same or may be different.
  • the terminal distinguishes the serving cell (s) in the macro base station and the serving cell (s) in the small base station and decodes the PDCCH. Apply the C-RNTI value to be used.
  • the division of the serving cell in the macro base station and the serving cell in the small base station may be performed based on timing advance group information.
  • a C-RNTI value is configured for each serving cell, and a serving cell used when initially configuring a main serving cell (Pcell) or an RRC connection is implicitly set to an initially allocated C-RNTI value.
  • the C-RNTI value of the secondary serving cell (Scell) or the remaining serving cells may be allocated through RRC signaling.
  • the UE does not distinguish between serving cells in the macro base station and serving cells in the small base station and is not allowed to apply all C-RNTI values secured during PDCCH decoding. That is, the terminal decodes the PDCCH by distinguishing between the macro C-RNTI and the small C-RNTI.
  • the small base station of another terminal that has already been assigned the n value as a C-RNTI value Change the C-RNTI value.
  • the terminal configured with dual connectivity may treat the n value as its C-RNTI value even for the small base station, and operate based on the same C-RNTI value in the macro base station and the small base station.
  • the dual connectivity request message transmitted from the macro base station to the small base station in step S610 may include information on the C-RNTI value allocated to the terminal from the macro base station.
  • the small base station changes the C-RNTI value of another terminal assigned the same C-RNTI value in the small base station based on the information on the C-RNTI value assigned to the corresponding terminal. Can be.
  • the small base station may perform RRC connection establishment again after RRC release of the other UE.
  • different C-RNTI values may be assigned to different terminals.
  • the small base station may allocate another C-RNTI value through an RRC connection reconfiguration procedure including MCI information.
  • This is a method of handover (HO) the other terminal to the current serving cell. That is, the actual HO does not occur, but the C-RNTI value can be changed using the HO procedure.
  • the small base station may instruct the terminal to race-based random access (RA) procedure and change the C-RNTI after the contention cancellation (CR).
  • RA race-based random access
  • CR contention cancellation
  • the small base station may instruct the other terminal to start the contention based random access procedure through a PDCCH order.
  • the contention-based RA procedure is initiated by the small base station, if the temporary C-RNTI included in the random access response (RAR) is confirmed by the CR, the C-RNTI allocated to the other terminal may be changed.
  • RAR random access response
  • the range of C-RNTI values that can be used for initial RRC connection establishment in the macro base station and the small base station (s) can be set so as not to overlap.
  • the macro base station and the small base station allocate the C-RNTIs of terminals connected through the small base station within the C-RNTI value range assigned thereto.
  • the ranges of the C-RNTI values may be defined so as not to overlap in advance.
  • the small base station may use the same C-RNTI value as the C-RNTI value previously assigned to the terminal by the macro base station for the terminal configured with dual connectivity.
  • the terminal configured with dual connectivity may operate based on the same C-RNTI (C-RNTI assigned to the macro base station) in the macro base station and the small base station.
  • C-RNTI assigned to the macro base station
  • the small base station since the C-RNTI value does not overlap with the range of the C-RNTI value assigned to the terminal that the small base station is not configured for dual connectivity, no collision occurs.
  • the usable C-RNTI range can be determined, and based on this, the C-RNTI range that can be used in the macro base station and the small base station can be determined.
  • the C-TNRI using the remainder in the macro base station. You can also decide by range.
  • the macro base station may determine an available C-RNTI range for each base station through information exchange with small base stations within the coverage of the macro base station.
  • FIG. 7 is a flowchart of a C-RNTI collision avoidance method performed by a macro base station in a wireless communication system supporting dual connectivity according to an embodiment of the present invention.
  • the macro base station receives a measurement report from the terminal (S700).
  • the measurement report includes the measurement result for the small cell.
  • the macro base station determines whether to configure the dual connection with the small station based on the measurement report, and if the macro base station determines to configure the dual connection, generates a dual connection request message and transmits to the small base station (S710). ).
  • the dual connectivity request message may include information on the C-RNTI value allocated to the terminal in the macro base station.
  • the macro base station receives a dual connectivity response message from the small base station (S720).
  • the dual connectivity response message may include information on the C-RNTI value for the small base station.
  • the macro base station performs an RRC connection reconfiguration procedure for the dual connectivity configuration to the terminal (S730).
  • the RRC connection reconfiguration procedure may include a step in which the macro base station generates an RRC connection reconfiguration message and transmits it to the terminal, and the terminal transmits an RRC connection reconfiguration complete message to the macro base station.
  • the RRC connection reconfiguration message may include information on the C-RNTI value for the small base station.
  • FIG. 8 is a flowchart illustrating a C-RNTI collision avoidance method performed by a small base station in a wireless communication system supporting dual connectivity according to an embodiment of the present invention.
  • the small base station receives a dual connectivity request message from the macro base station (S810).
  • the dual connectivity request message may include information on the C-RNTI value allocated to the terminal in the macro base station.
  • the small base station changes the C-RNTI value of the other terminal to which the same C-RNTI value as the C-RNTI value assigned to the corresponding terminal in the macro base station. This is to allow a terminal configured with dual connectivity to receive user data without collision with one C-RNTI value.
  • the small base station generates a dual connectivity response message and transmits it to the macro base station (S820).
  • the dual connectivity response message may include information on the C-RNTI value for the small base station.
  • the dual connectivity response message may not include information on a separate C-RNTI value for the small base station. This is because the macro base station and the small base station can use the same C-RNTI value for the corresponding terminal according to the method 2 or 3.
  • the small base station can perform the RRC connection reconfiguration procedure for a dual connection configuration with the direct terminal, and according to the above-described method 1, the RRC connection reconfiguration message transmitted by the small base station to the terminal is a C- It may include information about the RNTI value.
  • FIG. 9 is a flowchart illustrating a C-RNTI collision avoidance method performed by a terminal in a wireless communication system supporting dual connectivity according to an embodiment of the present invention.
  • the terminal performs a measurement report to the macro base station (S900).
  • the measurement report includes the measurement result for the small cell.
  • the terminal performs an RRC connection reconfiguration procedure for the dual connectivity configuration (S930).
  • the RRC connection reconfiguration procedure may include a step in which the macro base station generates an RRC connection reconfiguration message and transmits it to the terminal, and the terminal transmits an RRC connection reconfiguration complete message to the macro base station.
  • the RRC connection reconfiguration message may include information on the C-RNTI value for the small base station.
  • the terminal may receive the user data from the small base station based on the C-RNTI value allocated from the macro base station. That is, the terminal may check both the PDCCH received from the macro base station and the PDCCH received from the small base station based on one C-RNTI value.
  • the terminal may perform an RRC connection reconfiguration procedure for dual connectivity with the small base station.
  • the RRC connection reconfiguration message may include a C-RNTI for the small base station.
  • 10 is a block diagram of a macro base station, a small base station and a terminal for C-RNTI collision avoidance in a wireless communication system supporting dual connectivity according to an embodiment of the present invention. 10 illustrates a case in which a terminal is RRC-connected with a macro base station and a C-RNTI value for the macro base station is allocated to the terminal.
  • the terminal 1000 may configure dual connectivity with the macro base station 1030 and the small base station 1060.
  • the terminal 1000 includes a terminal receiver 1005, a terminal transmitter 1010, and a terminal processor 1020.
  • the terminal processor 1020 performs functions and controls necessary to implement the features of the present invention as described above.
  • the terminal transmitter 1010 transmits a measurement report message to the macro base station 1030.
  • the measurement report message may include a measurement result for the small cell.
  • the terminal receiver 1010 receives an RRC connection reconfiguration message for dual connectivity from the macro base station 1030 or the small base station 1060.
  • the RRC connection reconfiguration message may include a C-RNTI value for the small base station 1060. This may be the case according to the above-described method 1.
  • the terminal processor 1020 may perform a dual connection configuration at the terminal 1000 terminal and control the receiver 1010 to receive user data at the macro base station 1030 and the small base station 1060. For example, when multiple or dual C-RNTI values are allocated according to the macro base station 1030 and the small base station 1060 as described above, the terminal processor 1020 is based on the multiple or dual C-RNTI values. As such, the user data transmitted from the macro base station 1030 to the terminal 1000 and the user data transmitted from the small base station 1060 to the terminal 1000 may be distinguished.
  • the terminal processor 1020 may use the one C- Based on the RNTI value, the macro base station 1030 and the small base station 1060 may receive user data transmitted to the terminal 1000.
  • the macro base station 1030 includes a macro transmitter 1035, a macro receiver 1040, and a macro processor 1050.
  • the macro processor 1050 performs the functions and controls necessary to implement the features of the present invention as described above.
  • the macro receiver 1040 receives a measurement report message from the terminal 1000.
  • the measurement report message includes a measurement result for the small cell.
  • the macro processor 1050 determines whether to configure a dual connection with the terminal 1000 based on the measurement result included in the measurement report message.
  • the macro processor 1050 determines to configure dual connectivity with the terminal 1000
  • the macro processor 1050 generates a dual connectivity request message.
  • the dual connection request message may include information on the C-RNTI value allocated to the terminal 1000 by the macro processor 1050.
  • the macro transmitter 1035 transmits the dual connectivity request message to the small base station 1060.
  • the macro receiver 1040 may receive a dual connectivity response message from the small base station 1060.
  • the dual connectivity response message may include information on the C-RNTI value for the small base station.
  • the macro processor 1050 may generate an RRC connection reconfiguration message for the dual connectivity configuration based on the dual connectivity response message and transmit the generated RRC connection reconfiguration message to the terminal 1000 through the macro transmitter 1035.
  • the macro processor 1050 may generate the RRC connection reconfiguration message including information on the C-RNTI value for the small base station.
  • the small base station 1060 includes a small transmitter 1065, a small receiver 1070, and a small processor 1080.
  • the small processor 1080 performs functions and controls necessary to implement the features of the present invention as described above.
  • the small receiver 1070 receives the dual connectivity request message from the macro base station 1030.
  • the small processor 1080 may perform control to avoid C-RNTI collision with respect to the terminal 1000 in a dual connectivity configuration. According to the above-described method 1, since the multiple or dual C-RNTIs for the macro base station 1030 and the small base station 1040 are configured for the terminal 1000, the small processor 1080 is separately provided for the small base station 1060. Configure a C-RNTI of the C-RNTI and generate the dual connectivity response message including information on the C-RNTI value for the small base station 1060.
  • the same C-RNTI value is allocated to the terminal 1000 by the macro base station 1030 and the small base station 1040. Accordingly, the small processor 1080 is assigned the same C-RNTI value as the C-RNTI value assigned to the terminal 1000 in the macro base station 1030 to change the C-RNTI of another terminal connected to the small base station 1080. In this case, the small processor 1080 may not include information on a separate C-RNTI value in generating the dual connectivity response message.
  • the small transmitter 1065 transmits the generated dual connectivity response message to the macro base station 1030.
  • the small base station 1060 when the small base station 1060 can perform an RRC related procedure for the terminal 1000, the small base station 1060 generates an RRC connection reconfiguration message, and the terminal 1000 through the small transmitter 1065. Can be sent to.
  • the RRC connection reconfiguration message may include information about the C-RNTI value for the small base station 1060.

Landscapes

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

Abstract

La présente invention porte sur la communication sans fil et plus particulièrement sur un procédé permettant de configurer un identifiant de terminal dans un système de communication sans fil supportant une double connectivité et un appareil associé. Les étapes d'un procédé d'allocation C-RNTI permettant d'éviter la collision effectué par un terminal dans le système de communication sans fil supportant la double connectivité selon la présente invention consistent : à transmettre une déclaration de mesure comprenant un résultat de mesure d'une petite cellule d'une petite station de base à une macrostation de base ; et à recevoir un message de reconfiguration de connexion RRC pour une configuration de double connectivité pour la macrostation de base, un C-RNTI pour la macrostation de base et un C-RNTI pour la petite station de base étant alloués au terminal dans un état de double connectivité. En conséquence, quand les C-RNTI sont alloués au terminal dans lequel une double connectivité est configurée, la collision peut être évitée.
PCT/KR2014/004184 2013-05-10 2014-05-09 Procédé permettant de configurer un identifiant de terminal dans un système de communication sans fil supportant la double connectivité et appareil associé WO2014182131A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2013-0053096 2013-05-10
KR1020130053096A KR102003273B1 (ko) 2013-05-10 2013-05-10 이중연결을 지원하는 무선 통신 시스템에서 단말 식별자 구성 방법 및 그 장치

Publications (1)

Publication Number Publication Date
WO2014182131A1 true WO2014182131A1 (fr) 2014-11-13

Family

ID=51867524

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2014/004184 WO2014182131A1 (fr) 2013-05-10 2014-05-09 Procédé permettant de configurer un identifiant de terminal dans un système de communication sans fil supportant la double connectivité et appareil associé

Country Status (2)

Country Link
KR (1) KR102003273B1 (fr)
WO (1) WO2014182131A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2528913A (en) * 2014-08-04 2016-02-10 Samsung Electronics Co Ltd Signalling in dual connectivity mobile communication networks
WO2017019116A1 (fr) * 2015-07-29 2017-02-02 Intel IP Corporation Équipement d'utilisateur (ue) et procédés de communication dynamique de cellules crayon à ondes millimétriques
KR20170102168A (ko) * 2014-12-29 2017-09-07 후아웨이 테크놀러지 컴퍼니 리미티드 셀 무선 네트워크 임시 식별자 할당 방법 및 장치
CN111787628A (zh) * 2019-04-03 2020-10-16 中国移动通信有限公司研究院 一种传输方法、终端及网络设备
WO2023037318A1 (fr) * 2021-09-10 2023-03-16 Telefonaktiebolaget Lm Ericsson (Publ) Procédés et appareils de sélection d'identité d'eu avec des configurations mtrp inter-cellules

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102319836B1 (ko) 2014-12-16 2021-11-01 삼성전자 주식회사 무선 통신 시스템에서 기지국과 단말 간 통신 방법을 결정하는 방법 및 장치
WO2018201483A1 (fr) 2017-05-05 2018-11-08 华为技术有限公司 Procédé de transmission de données, dispositif terminal et dispositif de réseau d'accès
MX2020003878A (es) 2017-11-16 2020-08-17 Ericsson Telefon Ab L M Configuracion de rrc completa en en-dc.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011096742A2 (fr) * 2010-02-04 2011-08-11 엘지전자 주식회사 Procédé et appareil pour la transmission/réception de données dans un système de communications sans fil sur lequel fonctionne une pluralité de porteuses composantes
WO2012020933A2 (fr) * 2010-08-11 2012-02-16 (주)팬택 Procédé et dispositif permettant de transmettre/recevoir de façon apériodique un signal de référence pour estimer un canal sans conflit de ressources
WO2012093902A2 (fr) * 2011-01-06 2012-07-12 엘지전자 주식회사 Procédé et dispositif pour résoudre l'interférence entre cellules
WO2012173385A2 (fr) * 2011-06-13 2012-12-20 엘지전자 주식회사 Procédé et appareil pour allouer une ressource dans un système de communication sans fil

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101662084B1 (ko) * 2009-06-23 2016-10-04 엘지전자 주식회사 이동 통신 시스템에서 스케줄링 정보를 이용하여 신호를 전송하는 장치 및 그 방법
US8615241B2 (en) * 2010-04-09 2013-12-24 Qualcomm Incorporated Methods and apparatus for facilitating robust forward handover in long term evolution (LTE) communication systems

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011096742A2 (fr) * 2010-02-04 2011-08-11 엘지전자 주식회사 Procédé et appareil pour la transmission/réception de données dans un système de communications sans fil sur lequel fonctionne une pluralité de porteuses composantes
WO2012020933A2 (fr) * 2010-08-11 2012-02-16 (주)팬택 Procédé et dispositif permettant de transmettre/recevoir de façon apériodique un signal de référence pour estimer un canal sans conflit de ressources
WO2012093902A2 (fr) * 2011-01-06 2012-07-12 엘지전자 주식회사 Procédé et dispositif pour résoudre l'interférence entre cellules
WO2012173385A2 (fr) * 2011-06-13 2012-12-20 엘지전자 주식회사 Procédé et appareil pour allouer une ressource dans un système de communication sans fil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NTT DOCOMO: "Physical Layer Design for Dual Collectivity", R1-130409, 3GPP TGS RAN WG1 MEETING #72, 1 February 2013 (2013-02-01) *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2528913A (en) * 2014-08-04 2016-02-10 Samsung Electronics Co Ltd Signalling in dual connectivity mobile communication networks
US11038859B2 (en) 2014-08-04 2021-06-15 Samsung Electronics Co., Ltd. Signalling in dual connectivity mobile communication networks
US11743244B2 (en) 2014-08-04 2023-08-29 Samsung Electronics Co., Ltd. Signaling in dual connectivity mobile communication networks
KR20170102168A (ko) * 2014-12-29 2017-09-07 후아웨이 테크놀러지 컴퍼니 리미티드 셀 무선 네트워크 임시 식별자 할당 방법 및 장치
KR101971207B1 (ko) 2014-12-29 2019-04-22 후아웨이 테크놀러지 컴퍼니 리미티드 셀 무선 네트워크 임시 식별자 할당 방법 및 장치
US10772077B2 (en) 2014-12-29 2020-09-08 Huawei Technologies Co., Ltd. Cell radio network temporary identifier C-RNTI allocation method and device
WO2017019116A1 (fr) * 2015-07-29 2017-02-02 Intel IP Corporation Équipement d'utilisateur (ue) et procédés de communication dynamique de cellules crayon à ondes millimétriques
US10602374B2 (en) 2015-07-29 2020-03-24 Apple Inc. User equipment (UE) and methods for dynamic millimeter wave pencil cell communication
US11356861B2 (en) 2015-07-29 2022-06-07 Apple Inc. User equipment (UE) and methods for dynamic millimeter wave pencil cell communication
CN111787628A (zh) * 2019-04-03 2020-10-16 中国移动通信有限公司研究院 一种传输方法、终端及网络设备
WO2023037318A1 (fr) * 2021-09-10 2023-03-16 Telefonaktiebolaget Lm Ericsson (Publ) Procédés et appareils de sélection d'identité d'eu avec des configurations mtrp inter-cellules

Also Published As

Publication number Publication date
KR20140133232A (ko) 2014-11-19
KR102003273B1 (ko) 2019-10-01

Similar Documents

Publication Publication Date Title
WO2017052144A1 (fr) Procédé pour réaliser une procédure d'accès aléatoire dans un mode de couverture améliorée dans un système de communication sans fil et dispositif associé
WO2014182131A1 (fr) Procédé permettant de configurer un identifiant de terminal dans un système de communication sans fil supportant la double connectivité et appareil associé
WO2016163845A1 (fr) Procédé et appareil pour exécuter un procédé d'accès aléatoire en fonction d'un conflit plutôt qu'un procédé d'accès aléatoire sans conflit dans un système de communication sans fil
WO2016048082A1 (fr) Procédé et appareil permettant d'annuler un bsr prose déclenché dans un système de communication sans fil
WO2013005972A9 (fr) Procédé permettant à un terminal de contrôler un groupe d'avance de synchronisation dans un système de communication sans fil, et dispositif pour la mise en œuvre dudit procédé
WO2015142132A1 (fr) Procédé et appareil d'indication d'informations d2d dans un système de communication sans fil
WO2015133869A1 (fr) Procédé et dispositif d'émission d'informations de commande d'accès au support dans un système de communications sans fil prenant en charge les communications de dispositif à dispositif
WO2016163746A1 (fr) Procédé permettant de réaliser une procédure d'accès aléatoire dans une agrégation de porteuses avec au moins une cellule secondaire fonctionnant dans un spectre non autorisé et dispositif associé
WO2011084005A2 (fr) Procédé et appareil destines à recevoir une commande d'avance de temps dans un système de communication sans fil
WO2018131935A1 (fr) Procédé de communication sans fil basé sur une proximité et équipement utilisateur
WO2016117889A1 (fr) Procédé d'établissement d'une procédure d'accès aléatoire dans un système d'agrégation de porteuses et dispositif associé
WO2017191994A1 (fr) Procédé et appareil de réception de bloc osi dans un système de communication sans fil
WO2016144082A1 (fr) Procédé d'exploitation de procédure d'accès aléatoire dans un système de communication sans fil, et dispositif à cet effet
WO2014142628A2 (fr) Procédé et appareil pour effectuer une synchronisation dans un système de communication sans fil
WO2015167266A1 (fr) Procédé et appareil de gestion de temporisateur de désactivation de cellule secondaire de système de communication sans fil
WO2016068644A1 (fr) Procédé et appareil pour effectuer une initiation d'accès et une réponse pour une cellule sur porteuse sans licence dans un système de communication sans fil
WO2017065468A1 (fr) Procédé et appareil de contrôle de procédure d'attente pour une amélioration de couverture dans un système de communications sans fil
WO2016126029A1 (fr) Procédé pour appliquer une nouvelle configuration de pucch dans un système d'agrégation de porteuses, et dispositif associé
WO2016144084A1 (fr) Procédé d'exécution d'une procédure d'accès aléatoire rapide dans un système de communication sans fil et dispositif associé
WO2014196741A1 (fr) Procédé et appareil pour réaliser une synchronisation de temporisation dans un système de communication sans fil
WO2014098538A1 (fr) Procédé et appareil pour commander les intervalles de mesure de cellules de desserte dans un système de communication mobile
WO2016163687A1 (fr) Procédé pour effectuer une procédure d'accès aléatoire dans une agrégation de porteuses avec au moins une cellule secondaire fonctionnant dans un spectre sans licence, et dispositif correspondant
WO2019031797A1 (fr) Procédé permettant de réaliser une procédure d'accès aléatoire dans un système de communication sans fil et dispositif s'y rapportant
WO2016117937A1 (fr) Procédé pour initier une procédure d'accès aléatoire dans un système d'agrégation de porteuses et dispositif associé
WO2016117886A1 (fr) Procédé pour initier une procédure d'accès aléatoire dans un système d'agrégation de porteuses et dispositif associé

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14795265

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14795265

Country of ref document: EP

Kind code of ref document: A1