WO2024019396A1 - Procédé et appareil de connexion initiale pour répéteur commandé par réseau dans un système de communication mobile de prochaine génération - Google Patents

Procédé et appareil de connexion initiale pour répéteur commandé par réseau dans un système de communication mobile de prochaine génération Download PDF

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WO2024019396A1
WO2024019396A1 PCT/KR2023/009850 KR2023009850W WO2024019396A1 WO 2024019396 A1 WO2024019396 A1 WO 2024019396A1 KR 2023009850 W KR2023009850 W KR 2023009850W WO 2024019396 A1 WO2024019396 A1 WO 2024019396A1
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ncr
terminal
message
base station
random access
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PCT/KR2023/009850
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English (en)
Korean (ko)
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황준
에기월아닐
강현정
정병훈
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삼성전자 주식회사
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15507—Relay station based processing for cell extension or control of coverage area
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • 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
    • 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
    • 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
    • H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations

Definitions

  • This disclosure relates to a network controlled repeater system.
  • the 5G communication system or pre-5G communication system is called a Beyond 4G Network communication system or a Post LTE system.
  • 5G communication systems are being considered for implementation in ultra-high frequency (mmWave) bands (such as the 60 GHz band).
  • mmWave ultra-high frequency
  • the 5G communication system uses beamforming, massive array multiple input/output (massive MIMO), and full dimension multiple input/output (FD-MIMO).
  • the 5G communication system uses advanced small cells, advanced small cells, cloud radio access networks (cloud RAN), and ultra-dense networks. , Device to Device communication (D2D), wireless backhaul, moving network, cooperative communication, CoMP (Coordinated Multi-Points), and interference cancellation. Technology development is underway.
  • the 5G system uses FQAM (Hybrid FSK and QAM Modulation) and SWSC (Sliding Window Superposition Coding), which are advanced coding modulation (ACM) methods, and advanced access technologies such as FBMC (Filter Bank Multi Carrier) and NOMA. (non orthogonal multiple access), and SCMA (sparse code multiple access) are being developed.
  • IoT Internet of Things
  • IoE Internet of Everything
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • IoT Internet Technology
  • IoT Internet Technology
  • fields such as smart home, smart building, smart city, smart car or connected car, smart grid, healthcare, smart home appliances, and advanced medical services through the convergence and combination of existing IT (information technology) technology and various industries. It can be applied to .
  • 5G communication system technologies such as sensor network, Machine to Machine (M2M), and Machine Type Communication (MTC) are implemented through 5G communication technologies such as beam forming, MIMO, and array antennas.
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • cloud RAN cloud radio access network
  • One purpose of the present disclosure is to provide a method for a network control repeater to connect to a network and configure necessary operations.
  • one purpose of the present disclosure is to provide an apparatus and method that can effectively provide services in a mobile communication system.
  • the method includes receiving system information from a base station; Checking whether the system information includes an indicator indicating support for a network controlled repeater (NCR); and transmitting a random access preamble for a random access procedure to the base station based on the indicator being included in the system information, and the terminal may be a terminal supporting the NCR function.
  • NCR network controlled repeater
  • the method includes generating an indicator indicating support for a network controlled repeater (NCR); Broadcasting system information including the indicator; And it may include receiving a random access preamble from the terminal based on the system information.
  • NCR network controlled repeater
  • a terminal includes: a transceiver; And from a base station, control the transceiver to receive system information, check whether the system information includes an indicator indicating support for NCR (network controlled repeater), and based on the indicator being included in the system information, and a control unit that controls the transceiver to transmit a random access preamble for a random access procedure to the base station, and the terminal can support the NCR function.
  • NCR network controlled repeater
  • a base station includes a transceiver; and generating an indicator indicating support for NCR (network controlled repeater), controlling the transceiver to broadcast system information including the indicator, and receiving a random access preamble from a terminal based on the system information. It may include a control unit that controls the unit.
  • NCR network controlled repeater
  • a specific method of operating a network control repeater by attempting to connect to a base station and receiving necessary configuration information from the network can be provided.
  • the serving cell distinguishes between cells that can operate a control repeater and cells that cannot operate the control repeater, and then performs an operation to selectively allow access, After the control repeater is connected, it performs an operation to inform the corresponding cell that it is a network control repeater, which has the effect of allowing signals for controlling the control repeater to be properly transmitted/received between the cell and the network control repeater.
  • Figure 1 is a diagram showing the structure of an LTE system according to an embodiment of the present disclosure.
  • Figure 2 is a diagram showing the wireless protocol structure of an LTE system according to an embodiment of the present disclosure.
  • Figure 3 is a diagram showing the structure of a next-generation mobile communication system according to an embodiment of the present disclosure.
  • Figure 4 is a diagram showing the wireless protocol structure of a next-generation mobile communication system according to an embodiment of the present disclosure.
  • Figure 5 is a block diagram showing the internal structure of a terminal according to an embodiment of the present disclosure.
  • Figure 6 is a block diagram showing the configuration of a base station according to an embodiment of the present disclosure.
  • Figure 7 is a diagram showing the configuration of a network control repeater according to an embodiment of the present disclosure.
  • Figure 8a is a flowchart of how NCR-MT announces that it is an NCR entity using the RRCSetupComplete message.
  • Figure 8b is a flowchart of how NCR-MT announces that it is an NCR entity using the RRCSetupComplete message.
  • Figure 9a is a flowchart of how NCR-MT uses the RRCSetupRequest message to announce that it is an NCR entity.
  • Figure 9b is a flowchart of how NCR-MT uses the RRCSetupRequest message to announce that it is an NCR entity.
  • connection node a term referring to network entities
  • a term referring to messages a term referring to an interface between network objects
  • a term referring to various types of identification information a term referring to various types of identification information.
  • the following are examples for convenience of explanation. Accordingly, the present disclosure is not limited to the terms described below, and other terms referring to objects having equivalent technical meaning may be used.
  • the present disclosure uses terms and names defined in the 3rd Generation Partnership Project Long Term Evolution (3GPP LTE) standard.
  • 3GPP LTE 3rd Generation Partnership Project Long Term Evolution
  • each block of the processing flow diagrams and combinations of the flow diagram diagrams can be performed by computer program instructions.
  • These computer program instructions can be mounted on a processor of a general-purpose computer, special-purpose computer, or other programmable data processing equipment, so that the instructions performed through the processor of the computer or other programmable data processing equipment are described in the flow chart block(s). It creates the means to perform functions.
  • These computer program instructions may also be stored in computer-usable or computer-readable memory that can be directed to a computer or other programmable data processing equipment to implement a function in a particular manner, so that the computer-usable or computer-readable memory It is also possible to produce manufactured items containing instruction means that perform the functions described in the flowchart block(s).
  • Computer program instructions can also be mounted on a computer or other programmable data processing equipment, so that a series of operational steps are performed on the computer or other programmable data processing equipment to create a process that is executed by the computer, thereby generating a process that is executed by the computer or other programmable data processing equipment. Instructions that perform processing equipment may also provide steps for executing the functions described in the flow diagram block(s).
  • each block may represent a module, segment, or portion of code that includes one or more executable instructions for executing specified logical function(s).
  • each block may represent a module, segment, or portion of code that includes one or more executable instructions for executing specified logical function(s).
  • the term ' ⁇ unit' used in this embodiment refers to software or hardware components such as FPGA (Field Programmable Gate Array) or ASIC (Application Specific Integrated Circuit), and ' ⁇ unit' performs certain roles. do.
  • ' ⁇ part' is not limited to software or hardware.
  • the ' ⁇ part' may be configured to reside in an addressable storage medium and may be configured to reproduce on one or more processors. Therefore, as an example, ' ⁇ part' refers to components such as software components, object-oriented software components, class components, and task components, processes, functions, properties, and procedures. , subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables.
  • components and 'parts' may be combined into a smaller number of components and 'parts' or may be further separated into additional components and 'parts'. Additionally, components and 'parts' may be implemented to regenerate one or more CPUs within a device or a secure multimedia card. Additionally, in an embodiment, ' ⁇ part' may include one or more processors.
  • the terminal may refer to a MAC entity within the terminal that exists for each Master Cell Group (MCG) and Secondary Cell Group (SCG), which will be described later.
  • MCG Master Cell Group
  • SCG Secondary Cell Group
  • the present disclosure uses terms and names defined in the 3rd Generation Partnership Project Long Term Evolution (3GPP LTE) standard.
  • 3GPP LTE 3rd Generation Partnership Project Long Term Evolution
  • the base station is the entity that performs resource allocation for the terminal and may be at least one of gNode B, eNode B, Node B, BS (Base Station), wireless access unit, base station controller, or node on the network.
  • a terminal may include a UE (User Equipment), MS (Mobile Station), a cellular phone, a smartphone, a computer, or a multimedia system capable of performing communication functions. Of course, it is not limited to the above example.
  • the present disclosure is applicable to 3GPP NR (5th generation mobile communication standard).
  • this disclosure provides intelligent services (e.g., smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail, security and safety-related services) based on 5G communication technology and IoT-related technology. etc.) can be applied.
  • eNB may be used interchangeably with gNB for convenience of explanation. That is, a base station described as an eNB may represent a gNB.
  • the term terminal can refer to mobile phones, NB-IoT devices, sensors, as well as other wireless communication devices.
  • Wireless communication systems have moved away from providing early voice-oriented services to, for example, 3GPP's HSPA (High Speed Packet Access), LTE (Long Term Evolution or E-UTRA (Evolved Universal Terrestrial Radio Access)), and LTE-Advanced.
  • Broadband wireless that provides high-speed, high-quality packet data services such as communication standards such as (LTE-A), LTE-Pro, 3GPP2's High Rate Packet Data (HRPD), UMB (Ultra Mobile Broadband), and IEEE's 802.16e. It is evolving into a communication system.
  • the LTE system uses Orthogonal Frequency Division Multiplexing (OFDM) in the downlink (DL), and Single Carrier Frequency Division Multiple Access (SC-FDMA) in the uplink (UL).
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • Uplink refers to a wireless link in which a terminal (UE; User Equipment or MS; Mobile Station) transmits data or control signals to a base station (eNode B or BS; Base Station), and downlink refers to a wireless link in which the base station transmits data or control signals to the terminal. It refers to a wireless link that transmits signals.
  • the multiple access method described above differentiates each user's data or control information by allocating and operating the time-frequency resources to carry data or control information for each user so that they do not overlap, that is, orthogonality is established. .
  • Enhanced Mobile BroadBand eMBB
  • massive Machine Type Communication mMTC
  • Ultra Reliability Low Latency Communication URLLC
  • eMBB may aim to provide more improved data transmission rates than those supported by existing LTE, LTE-A, or LTE-Pro.
  • eMBB must be able to provide a peak data rate of 20Gbps in the downlink and 10Gbps in the uplink from the perspective of one base station.
  • the 5G communication system may need to provide the maximum transmission rate and at the same time provide an increased user perceived data rate.
  • the 5G communication system may require improvements in various transmission and reception technologies, including more advanced multi-antenna (MIMO; Multi Input Multi Output) transmission technology.
  • MIMO Multi Input Multi Output
  • the 5G communication system uses a frequency bandwidth wider than 20 MHz in the 3 to 6 GHz or above 6 GHz frequency band, meeting the requirements of the 5G communication system. Data transfer speed can be satisfied.
  • mMTC is being considered to support application services such as Internet of Things (IoT) in 5G communication systems.
  • IoT Internet of Things
  • mMTC may require support for access to a large number of terminals within a cell, improved coverage of terminals, improved battery time, and reduced terminal costs.
  • the Internet of Things provides communication functions by attaching various sensors and various devices, it must be able to support a large number of terminals (for example, 1,000,000 terminals/km 2 ) within a cell.
  • terminals supporting mMTC are likely to be located in shadow areas that cannot be covered by cells, such as the basement of a building, so wider coverage may be required compared to other services provided by the 5G communication system.
  • Terminals that support mMTC must be composed of low-cost terminals, and since it is difficult to frequently replace the terminal's battery, a very long battery life time, such as 10 to 15 years, may be required.
  • URLLC Ultra-low latency
  • ultra-reliability very high reliability
  • a service supporting URLLC must satisfy an air interface latency of less than 0.5 milliseconds and may have a packet error rate of 10 -5 or less.
  • the 5G system must provide a smaller Transmit Time Interval (TTI) than other services, and at the same time, a design that requires allocating wide resources in the frequency band to ensure the reliability of the communication link. Specifications may be required.
  • TTI Transmit Time Interval
  • the three services considered in the above-described 5G communication system namely eMBB, URLLC, and mMTC, can be multiplexed and transmitted in one system.
  • different transmission/reception techniques and transmission/reception parameters can be used between services to satisfy the different requirements of each service.
  • the above-described mMTC, URLLC, and eMBB are only examples of different service types, and the service types to which this disclosure is applied are not limited to the above-described examples.
  • embodiments of the present invention will be described using LTE, LTE-A, LTE Pro or 5G (or NR, next-generation mobile communication) systems as examples, but the present invention can also be applied to other communication systems with similar technical background or channel type. Examples of may be applied.
  • embodiments of the present invention may be applied to other communication systems through some modifications without significantly departing from the scope of the present invention at the discretion of a person with skilled technical knowledge.
  • Figure 1 is a diagram showing the structure of an LTE system according to an embodiment of the present disclosure.
  • the wireless access network of the LTE system includes a next-generation base station (Evolved Node B, hereinafter referred to as ENB, Node B or base station) (1-05, 1-10, 1-15, 1-20) and It may be composed of a Mobility Management Entity (MME) (1-25) and S-GW (1-30, Serving-Gateway).
  • MME Mobility Management Entity
  • S-GW Serving-Gateway
  • UE or terminal 1-35 can access an external network through ENB (1-05 to 1-20) and S-GW (1-30).
  • ENBs 1-05 to 1-20 may correspond to the existing Node B of the UMTS system.
  • the ENB is connected to the UE (1-35) through a wireless channel and can perform a more complex role than the existing Node B.
  • all user traffic including real-time services such as VoIP (Voice over IP) through the Internet protocol, can be serviced through a shared channel. Therefore, a device that collects status information such as buffer status, available transmission power status, and channel status of UEs and performs scheduling may be needed, and the ENB (1-05 to 1-20) may be responsible for this.
  • One ENB can typically control multiple cells.
  • the LTE system can use Orthogonal Frequency Division Multiplexing (OFDM) as a wireless access technology in, for example, a 20 MHz bandwidth.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the ENB can apply the Adaptive Modulation & Coding (AMC) method, which determines the modulation scheme and channel coding rate according to the channel status of the terminal.
  • AMC Adaptive Modulation & Coding
  • the S-GW (1a-30) is a device that provides a data bearer, and can create or remove a data bearer under the control of the MME (1-25).
  • the MME is a device that handles various control functions as well as mobility management functions for the terminal and can be connected to multiple base stations.
  • Figure 2 is a diagram showing the wireless protocol structure of an LTE system according to an embodiment of the present disclosure.
  • the wireless protocols of the LTE system are Packet Data Convergence Protocol (PDCP) (2-05, 2-40) and Radio Link Control (RLC) (Radio Link Control, RLC) in the terminal and ENB, respectively. 2-10, 2-35) and Medium Access Control (MAC) (2-15, 2-30).
  • PDCP may be responsible for operations such as IP (internet protocol) header compression/restoration.
  • IP internet protocol
  • the Radio Link Control (2-10, 2-35) reconfigures the PDCP Packet Data Unit (PDU) to an appropriate size to perform an automatic repeat request (ARQ) operation. etc. can be performed.
  • RLC Radio Link Control
  • PDU Packet Data Unit
  • ARQ automatic repeat request
  • RLC SDU deletion function (RLC SDU discard (only for UM and AM data transfer)
  • MAC (2-15, 2-30) is connected to several RLC layer devices configured in one terminal, and performs an operation of multiplexing RLC PDUs to MAC PDUs and demultiplexing RLC PDUs from MAC PDUs. can do.
  • the main functions of MAC can be summarized as follows. Of course, this is not limited to the examples below.
  • the physical layer (2-20, 2-25) channel codes and modulates upper layer data, creates an OFDM symbol and transmits it over a wireless channel, or demodulates an OFDM symbol received through a wireless channel and transmits it to the channel. You can decode and transmit it to the upper layer.
  • this is not limited to the examples below.
  • Figure 3 is a diagram showing the structure of a next-generation mobile communication system according to an embodiment of the present disclosure.
  • the radio access network of the next-generation mobile communication system includes a next-generation base station (New Radio Node B, hereinafter referred to as NR gNB or NR base station) (3-10) and a next-generation wireless core network (New Radio Core). Network, NR CN) (3-05).
  • the next-generation wireless user equipment (New Radio User Equipment, NR UE or UE) (3-15) can access an external network through NR gNB (3-10) and NR CN (3-05).
  • the NR gNB (3-10) may correspond to an Evolved Node B (eNB) of the existing LTE system.
  • NR gNB is connected to NR UE (3-15) through a wireless channel and can provide superior services than the existing Node B.
  • eNB Evolved Node B
  • NR gNB is connected to NR UE (3-15) through a wireless channel and can provide superior services than the existing Node B.
  • all user traffic can be serviced through a shared channel. Therefore, a device that collects status information such as buffer status, available transmission power status, and channel status of UEs and performs scheduling may be needed, and the NR gNB 3-10 may be responsible for this.
  • One NR gNB (3-10) can control multiple cells.
  • Beamforming technology may be additionally used using Orthogonal Frequency Division Multiplexing (OFDM) as a wireless access technology.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the NR gNB (3-10) uses Adaptive Modulation & Coding (hereinafter referred to as Adaptive Modulation & Coding) to determine the modulation scheme and channel coding rate according to the channel status of the terminal. (referred to as AMC) method may be applied.
  • NR CN (3-05) can perform functions such as mobility support, bearer setup, and QoS setup.
  • NR CN (3-05) is a device responsible for various control functions as well as mobility management functions for the terminal and can be connected to multiple base stations.
  • the next-generation mobile communication system can be linked to the existing LTE system, and NR CN can be connected to the MME (3-25) through a network interface.
  • MME (3-25) can be connected to eNB (3-30), which is an existing base station.
  • Figure 4 is a diagram showing the wireless protocol structure of a next-generation mobile communication system according to an embodiment of the present disclosure.
  • the wireless protocols of the next-generation mobile communication system are NR Service Data Adaptation Protocol (SDAP) (4-01, 4-45) and NR PDCP (4-05, 4-05) in the terminal and NR base station, respectively. 4-40), NR RLC (4-10, 4-35), and NR MAC (4-15, 4-30).
  • SDAP NR Service Data Adaptation Protocol
  • NR PDCP (4-05, 4-05) in the terminal and NR base station, respectively.
  • 4-40 NR RLC (4-10, 4-35), and NR MAC (4-15, 4-30).
  • the main functions of NR SDAP (4-01, 4-45) may include some of the following functions. However, it is not limited to the examples below.
  • the terminal uses a Radio Resource Control (RRC) message to determine whether to use the header of the SDAP layer device for each PDCP layer device, for each bearer, or for each logical channel, or whether to use the function of the SDAP layer device. can be set.
  • RRC Radio Resource Control
  • the terminal sets a 1-bit indicator (NAS reflective QoS) that reflects the Non-Access Stratum (NAS) QoS (Quality of Service) in the SDAP header and the access layer (Access Stratum).
  • NAS Non-Access Stratum
  • AS QoS reflection setting 1-bit indicator
  • AS reflective QoS can indicate that the terminal can update or reset mapping information for uplink and downlink QoS flows and data bearers.
  • the SDAP header may include QoS flow ID information indicating QoS.
  • QoS information can be used as data processing priority, scheduling information, etc. to support smooth service.
  • the main functions of NR PDCP (4-05, 4-40) may include some of the following functions. However, it is not limited to the examples below.
  • the reordering function of the NR PDCP device may mean the function of reordering PDCP PDUs received from the lower layer in order based on PDCP sequence number (SN).
  • the reordering function of the NR PDCP device may include the function of delivering data to a higher layer in the reordered order, or may include the function of delivering data directly without considering the order, and may include the function of transmitting data directly without considering the order, and reordering the data may cause loss. It may include a function to record lost PDCP PDUs, it may include a function to report the status of lost PDCP PDUs to the transmitting side, and it may include a function to request retransmission of lost PDCP PDUs. there is.
  • the main functions of NR RLC (4-10, 4-35) may include some of the following functions. However, it is not limited to the examples below.
  • the in-sequence delivery function of the NR RLC device may mean the function of delivering RLC SDUs received from the lower layer to the upper layer in order.
  • the in-sequence delivery function of the NR RLC device may include the function of reassembling and delivering it.
  • the in-sequence delivery function of the NR RLC device may include a function to rearrange the received RLC PDUs based on the RLC SN (sequence number) or PDCP SN (sequence number), and rearrange the order to prevent loss. It may include a function to record lost RLC PDUs, it may include a function to report the status of lost RLC PDUs to the transmitting side, and it may include a function to request retransmission of lost RLC PDUs. there is.
  • the in-sequence delivery function of the NR RLC device may include a function of delivering only the RLC SDUs up to the lost RLC SDU in order when there is a lost RLC SDU to the upper layer.
  • the in-sequence delivery function of the NR RLC device may include a function of delivering all RLC SDUs received before the timer starts to the upper layer in order if a predetermined timer expires even if there are lost RLC SDUs. there is.
  • the in-sequence delivery function of the NR RLC device may include a function of delivering all RLC SDUs received to date to the upper layer in order if a predetermined timer expires even if there are lost RLC SDUs.
  • the NR RLC device can process RLC PDUs in the order they are received and deliver them to the NR PDCP device, regardless of the order of the sequence number (out-of sequence delivery).
  • the NR RLC device When the NR RLC device receives a segment, it can receive segments stored in a buffer or to be received later, reconstruct them into one complete RLC PDU, and then transmit it to the NR PDCP device.
  • the NR RLC layer may not include a concatenation function, and may perform the function in the NR MAC layer or replace it with the multiplexing function of the NR MAC layer.
  • the out-of-sequence delivery function of the NR RLC device may refer to the function of directly delivering RLC SDUs received from a lower layer to the upper layer regardless of their order.
  • the out-of-sequence delivery function of the NR RLC device may include a function of reassembling and delivering when one RLC SDU is originally received by being divided into several RLC SDUs.
  • the out-of-sequence delivery function of the NR RLC device may include a function of storing the RLC SN or PDCP SN of received RLC PDUs, sorting the order, and recording lost RLC PDUs.
  • the NR MAC (4-15, 4-30) may be connected to several NR RLC layer devices configured in one terminal, and the main functions of the NR MAC may include some of the following functions. . However, it is not limited to the examples below.
  • the NR PHY layer (4-20, 4-25) channel-codes and modulates the upper layer data, creates OFDM symbols and transmits them to the wireless channel, or demodulates and channel decodes the OFDM symbols received through the wireless channel and transmits them to the upper layer.
  • the transfer operation can be performed.
  • Figure 5 is a block diagram showing the internal structure of a terminal to which the present invention is applied.
  • the terminal may include an RF (Radio Frequency) processing unit 5-10, a baseband processing unit 5-20, a storage unit 5-30, and a control unit 5-40. there is. Of course, it is not limited to the above example, and the terminal may include fewer or more components than those shown in FIG. 5.
  • RF Radio Frequency
  • the RF processing unit 5-10 can perform functions for transmitting and receiving signals through a wireless channel, such as band conversion and amplification of signals. That is, the RF processing unit 5-10 up-converts the baseband signal provided from the baseband processing unit 5-20 into an RF band signal and transmits it through an antenna, and converts the RF band signal received through the antenna into a baseband signal. It can be down-converted into a signal.
  • the RF processing unit 5-10 may include a transmission filter, a reception filter, an amplifier, a mixer, an oscillator, a digital to analog convertor (DAC), an analog to digital convertor (ADC), etc. there is. Of course, it is not limited to the above example. In FIG.
  • the RF processing unit 5-10 may include a plurality of RF chains. Additionally, the RF processing unit 5-10 can perform beamforming. For beamforming, the RF processing unit 5-10 can adjust the phase and size of each signal transmitted and received through a plurality of antennas or antenna elements. Additionally, the RF processing unit 5-10 can perform MIMO (Multi Input Multi Output) and can receive multiple layers when performing a MIMO operation.
  • MIMO Multi Input Multi Output
  • the baseband processing unit 5-20 performs a conversion function between baseband signals and bit strings according to the physical layer specifications of the system. For example, when transmitting data, the baseband processing unit 5-20 generates complex symbols by encoding and modulating the transmission bit string. Additionally, when receiving data, the baseband processing unit 5-20 can restore the received bit stream by demodulating and decoding the baseband signal provided from the RF processing unit 5-10. For example, when following the OFDM (orthogonal frequency division multiplexing) method, when transmitting data, the baseband processing unit 5-20 generates complex symbols by encoding and modulating the transmission bit string, and maps the complex symbols to subcarriers.
  • OFDM orthogonal frequency division multiplexing
  • OFDM symbols are configured through IFFT (inverse fast Fourier transform) operation and CP (cyclic prefix) insertion.
  • the baseband processing unit 5-20 divides the baseband signal provided from the RF processing unit 5-10 into OFDM symbol units, and signals mapped to subcarriers through FFT (fast Fourier transform). After restoring the received bit string, the received bit string can be restored through demodulation and decoding.
  • the baseband processing unit 5-20 and the RF processing unit 5-10 transmit and receive signals as described above.
  • the baseband processing unit 5-20 and the RF processing unit 5-10 may be referred to as a transmitting unit, a receiving unit, a transceiving unit, or a communication unit.
  • at least one of the baseband processing unit 5-20 and the RF processing unit 5-10 may include a plurality of communication modules to support a plurality of different wireless access technologies.
  • at least one of the baseband processing unit 5-20 and the RF processing unit 5-10 may include different communication modules to process signals in different frequency bands.
  • different wireless access technologies may include wireless LAN (eg, IEEE 802.11), cellular network (eg, LTE), etc.
  • the different frequency bands may include a super high frequency (SHF) (e.g., 2.NRHz, NRhz) band and a millimeter wave (e.g., 60GHz) band.
  • SHF super high frequency
  • the terminal can transmit and receive signals with the base station using the baseband processing unit 5-20 and the RF processing unit 5-10, and the signals may include control information and data.
  • the storage unit 5-30 stores data such as basic programs, application programs, and setting information for operation of the terminal.
  • the storage unit 5-30 may store information related to an access node that performs wireless communication using a second wireless access technology. Additionally, the storage unit 5-30 provides stored data upon request from the control unit 5-40.
  • the storage unit 5-30 may be composed of a storage medium such as ROM, RAM, hard disk, CD-ROM, and DVD, or a combination of storage media. Additionally, the storage unit 5-30 may be composed of a plurality of memories.
  • the control unit 5-40 controls the overall operations of the terminal. For example, the control unit 5-40 transmits and receives signals through the baseband processing unit 5-20 and the RF processing unit 5-10. Additionally, the control unit 5-40 writes and reads data into the storage unit 5-30.
  • the control unit 5-40 may include at least one processor.
  • the control unit 5-40 may include a communication processor (CP) that performs control for communication and an application processor (AP) that controls upper layers such as application programs. Additionally, at least one component within the terminal may be implemented with one chip.
  • Figure 6 is a block diagram showing the configuration of a base station according to an embodiment of the present disclosure.
  • the base station may include an RF processing unit 6-10, a baseband processing unit 6-20, a backhaul communication unit 6-30, a storage unit 6-40, and a control unit 6-50. You can. Of course, it is not limited to the above example, and the base station may include fewer or more configurations than the configuration shown in FIG. 6.
  • the RF processing unit 6-10 can perform functions for transmitting and receiving signals through a wireless channel, such as band conversion and amplification of signals. That is, the RF processing unit 6-10 up-converts the baseband signal provided from the baseband processing unit 6-20 into an RF band signal and transmits it through an antenna, and converts the RF band signal received through the antenna into a baseband signal. Downconvert it to a signal.
  • the RF processing unit 6-10 may include a transmission filter, a reception filter, an amplifier, a mixer, an oscillator, a DAC, an ADC, etc. In Figure 6, only one antenna is shown, but the RF processing unit 6-10 may be equipped with a plurality of antennas.
  • the RF processing unit 6-10 may include a plurality of RF chains. Additionally, the RF processing unit 6-10 can perform beamforming. For beamforming, the RF processing unit 6-10 can adjust the phase and size of each signal transmitted and received through a plurality of antennas or antenna elements. The RF processing unit can perform downward MIMO operation by transmitting one or more layers.
  • the baseband processing unit 6-20 may perform a conversion function between a baseband signal and a bit string according to the physical layer standard of the first wireless access technology. For example, when transmitting data, the baseband processing unit 6-20 may generate complex symbols by encoding and modulating the transmission bit stream. Additionally, when receiving data, the baseband processing unit 6-20 can restore the received bit stream by demodulating and decoding the baseband signal provided from the RF processing unit 6-10. For example, when following the OFDM method, when transmitting data, the baseband processing unit 6-20 generates complex symbols by encoding and modulating the transmission bit string, maps the complex symbols to subcarriers, and performs IFFT operation and OFDM symbols are configured through CP insertion.
  • the baseband processing unit 6-20 when receiving data, divides the baseband signal provided from the RF processing unit 6-10 into OFDM symbols, restores the signals mapped to subcarriers through FFT operation, and then , the received bit string can be restored through demodulation and decoding.
  • the baseband processing unit 6-20 and the RF processing unit 6-10 can transmit and receive signals as described above. Accordingly, the baseband processing unit 6-20 and the RF processing unit 6-10 may be referred to as a transmitting unit, a receiving unit, a transceiving unit, a communication unit, or a wireless communication unit.
  • the base station can transmit and receive signals with the terminal using the baseband processing unit 6-20 and the RF processing unit 6-10, and the signals can include control information and data.
  • the backhaul communication unit 6-30 provides an interface for communicating with other nodes in the network.
  • the backhaul communication unit 6-30 converts a bit string transmitted from the main base station to another node, for example, an auxiliary base station, a core network, etc., into a physical signal, and converts a physical signal received from another node into a bit string. can do.
  • the backhaul communication unit 6-30 may be included in the communication unit.
  • the storage unit 6-40 stores data such as basic programs, application programs, and setting information for operation of the base station.
  • the storage unit 6-40 can store information about bearers assigned to the connected terminal, measurement results reported from the connected terminal, etc. Additionally, the storage unit 6-40 may store information that serves as a criterion for determining whether to provide or suspend multiple connections to the terminal. Additionally, the storage unit 6-40 provides stored data upon request from the control unit 6-50.
  • the storage unit 6-40 may be composed of a storage medium such as ROM, RAM, hard disk, CD-ROM, and DVD, or a combination of storage media. Additionally, the storage unit 6-40 may be composed of a plurality of memories. According to some embodiments, the storage unit 6-40 may store a program for performing the buffer status reporting method according to the present disclosure.
  • the control unit 6-50 controls the overall operations of the base station. For example, the control unit 6-50 transmits and receives signals through the baseband processing unit 6-20 and the RF processing unit 6-10 or through the backhaul communication unit 6-30. Additionally, the control unit 6-50 writes and reads data into the storage unit 6-40.
  • the control unit 6-50 may include at least one processor. Additionally, at least one component of the base station may be implemented with one chip.
  • NCR network controlled repeater
  • NCR-MT mobile termination
  • NCR-FWD forwarding
  • Figure 7 is a diagram showing the configuration of a network control repeater according to an embodiment of the present disclosure.
  • the network controlled repeater consists of NCR (network controlled repeater) - MT and NCR-FWD.
  • MT stands for mobile termination, and can receive control signals for NCR operation from the serving base station and transmit control information to NCR-FWD.
  • NCR-FWD stands for forwarding and performs the role of amplifying the RF signal received from the base station and transmitting it to the terminal.
  • NCR-FWD can perform additional operations through control information received from NCR-MT.
  • NCR-FWD can deliver a signal amplified using a specific beam to the terminal or receive a signal transmitted by the terminal.
  • NCR-FWD may or may not receive/amplify/transmit a signal from a base station according to a specific time division duplex (TDD) pattern, or receive/amplify/transmit a signal from a terminal.
  • TDD time division duplex
  • NCR and the network In order to perform the above operations, NCR and the network must be able to distinguish between each other. Below, we will explain how the NCR and the network, that is, the serving base station, distinguish between each other and how to exchange configuration information specific to the NCR accordingly.
  • the cell may include a separate cell for controlling NCR.
  • the NCR can perform operations required when accessing the separate cell, and for this purpose, it can receive control information from the separate cell.
  • the separate cell needs to provide an indicator indicating that it is a cell for NCR use, and the NCR that confirms that it is a cell for NCR use can continue attempting to connect to the separate cell.
  • the serving base station can support a general terminal and may be a base station that simultaneously supports a general terminal and NCR, or it may be a base station that cannot support a general terminal and NCR at the same time. Depending on the example, it can be divided into the following cases.
  • a base station supporting NCR or the NCR function may broadcast including an NCR support indicator in a master information block (MIB) or system information block (SIB).
  • MIB master information block
  • SIB system information block
  • the base station may introduce intraFreqReselection-NCR bit (IFR bit) in SIB.
  • the bit can have the value of allowed or not-allowed. The presence of this bit may mean that this cell supports NCR.
  • NCR-MT can attempt to access the cell by performing random access if this bit is included in the SIB.
  • the NCR-MT When selecting/reselecting a cell, if this bit does not exist in the SIB of the cell, the NCR-MT considers this cell as barred and the intraFreqReselection-NCR bit is set to allowed, and selects/reselects another cell. When reselecting, you can select/reselect another cell with the same frequency as the barred cell.
  • the NCR-MT can attempt to access this cell, and if it is barred while trying to access, it can use a frequency other than the frequency of the barred cell. Frequency must be considered when selecting/reselecting cells. In other words, the corresponding frequency is also considered barred.
  • the NCR-MT can attempt to access this cell, and if it is barred while attempting access, it will cell a cell on the same frequency as the frequency of the barred cell. This can be taken into consideration when selecting/reselecting.
  • the NCR-MT can selectively attempt to connect to an NCR-supporting cell during the cell selection/reselection process. After that, if there is a process of establishing an RRC connection, the NCR-MT must inform the corresponding cell that it is an NCR entity or NCR-MT. Here's how to do this:
  • Case 1 Notification method during RACH (random access channel) preamble transmission process.
  • NCR-MT may receive a dedicated random access preamble and/or rach occasion (RO) and/or RACH resources in advance.
  • the NCR-MT can receive RACH-related settings from the MIB or SIB of the cell it is attempting to connect to.
  • the NCR-MT may attempt random access to access the cell.
  • the gNB may attempt the access. The terminal attempting can identify that it is NCR, and then the base station can transmit control information for NCR-FWD through NCR-MT.
  • MSG (Message) 3 may include an NCR-specific LCID (logical channel ID).
  • This LCID is used to identify the common control channel (CCCH) included in the MSG3 or MSGA MAC PDU, and this LCID may be included in the MAC subheader in the MAC PDU.
  • the UL CCCH may be, for example, RRCSetupRequest.
  • the base station that successfully receives MSG 3 or MSG A learns that the corresponding terminal is NCR based on this. Afterwards, the base station can transmit control information for NCR-FWD through NCR-MT.
  • the NCR-MT After cell selection/reselection, when the NCR-MT receives a UL (uplink) grant with a successful RACH procedure, it delivers MSG3 to the serving base station through the RRCSetupRequest message, and when the serving base station delivers the RRCSetup message, the settings are applied. Afterwards, the RRCSetupComplete message is delivered to the serving base station. At this time, the RRCSetupComplete message may be delivered by including an indicator indicating that it is NCR. The following shows the detailed flow, which can correspond to the procedures shown in FIGS. 8A and 8B. In this example, the NCR support bit is included in the MIB/SIB as an example, but it is also possible to utilize the intra-Frequency Reselection bit.
  • 8A and 8B are flowcharts of how the NCR-MT uses the RRCSetupComplete message to announce that it is an NCR entity.
  • the NCR-MT 810 can be switched from an idle state to a connected state or powered on (S801).
  • the NCR-MT (810) is a synchronization signal block (SSB) radiated from surrounding cells (e.g., base station 1 (gNB 1 (830)) and base station 2 (gNB 2 (820)) as shown in FIG. 8A. ) is received to derive the signal strength of the cell, and based on this measurement, a cell that satisfies the cell selection conditions is selected (S802).
  • the cell selected by the NCT-MT (810) is gNB. Assume it is a cell of 2 (820).
  • the NCR-MT (810) receives the MIB or SIB1 of the selected cell and confirms that the cell is not an NCR support cell, it assumes a cell barred state (S803) and assumes a cell barred state (S803), and determines that another cell (e.g., gNB Cell 1 (cell of 830) is selected (S804), and MIB/SIB1 of the corresponding cell is received to check whether it is an NCR-supporting cell (S805).
  • gNB Cell 1 cell of 830
  • the NCR-MT 810 can perform a random access procedure to the corresponding cell (S806). For example, in this procedure, the NCR-MT (810) transmits MSG 3 through an RRCSetupRequest message to the corresponding cell (830) (S806a) and receives an RRCsetup message from the cell (830) in response (S806b). You can. At this time, the RRCSetupRequest message may include information about the connection establishment cause (EstablishmentCause) specific to NCR.
  • the NCR-MT 810 which has received the RRCSetup message, can apply the master cell group (MCG) settings for the MAC and PHY obtained from the corresponding cell 830, as shown in FIG. 8b (S807).
  • the NCR-MT 810 may transmit an RRCSetupComplete message to the corresponding cell to complete RRC connection setup (S808).
  • the RRCSetupComplete message includes an indicator indicating that the NCR-MT 810 is an NCR, NCR- At least one of an MT ID or a NAS registration request may be included.
  • gNB supporting NCR broadcasts the NCR-support indication in MIB or SIB.2)
  • UE which is NCR-MT is powered on(or UE is in Idle/inactive), it can first search frequency to camp and select the cell based on measurement result (i.e., do legacy cell(re)selection procedure).
  • NCR-MT applies the configurations in MIB and SIB1 of the selected cell.
  • NCR-MT When NCR-MT tries to setup RRC connection, NCR-MT does random access procedure with gNB. NCR-MT sends RRCSetupRequest msg to gNB, and gNB responds with RRCSetup msg to NCR-MT. Within RRCSetupRequest msg, there is new cause value for Establishment indicating NCR control traffic. After NCR-MT configures the received RRCsetup msg, UE can add NCR-MT indication within RRCSetupComplete message and transmit it upon successful RRC setup procedure.
  • RRCSetupComplete msg can also include: NCR specific entity ID (and/or (MT) ID , and/or FWD ID) either in legacy NAS msg 'Registration Request' or out, and transfer this.
  • Serving gNB identifies that the accessed UE is NCR-MT, and some UE ID visible in CN can be transferred to CN for authorization (like 5G TMSI or 5G-GUTI, or NCR-FWD ID).
  • NCR-FWD ID is transferred to CN within IE 'NCR', then CN can identify NCR-FWD.
  • the serving base station 830 may transmit a Registration Request to the AMF 840 using the NGAP initial UE message (S808).
  • the NGAP initial UE message may include an Establishment cause indicating that it is an RRC connection indicator for NCR control, obtained during the RRC connection process.
  • the ID of the NCR-MT or NCR entity, or NCR-Fwd ID may be included in the message. This information can be transmitted from the serving base station 830 to the AMF 840 (S809) and used for authorization and authentication of the NCR entity in the core network 850 (S810, S811).
  • the AMF 840 receiving an indicator that identifies the terminal as an NCR node through an Initial UE message from the serving base station 830 (e.g. , NCR MT's terminal ID) can be confirmed by transmitting it to a separate server on the core network (850) that holds the ID or to the AMF (840) and co-located server (850). If it is confirmed that the terminal is authenticated as an NCR node, a separate server on the core network 850 or a server co-located with the AMF 840 may transmit an indication that it has been authorized to the AMF 840.
  • the AMF 840 that receives this is the serving base station 830 and can provide an indication that the corresponding terminal has been authorized through an initial UE context setup request message.
  • the NCR authorization confirmation operation of the AMF and co-located server described above can be replaced by the implementation of AMF.
  • the serving base station 830 may transmit control information for operation of the NCR-Fwd to the NCR-MT 810.
  • the configuration information of the L1/L2 channel for transmitting this control information may be transmitted to the NCR-MT 810 through a DL RRC message or RRCReconfiguration message (S812). More detailed settings transmitted at this time may be as follows.
  • NCR specific configurations i.e., PDCCH/PDSCH configuration for side control information channel, PUCCH/PUSCH configuration for side control information channel, configuration for DCI/UCI and MAC CE for side control information reception and transmission.
  • the NCR-MT (810) can receive side control information for NCR-Fwd from the serving base station (830) through the L1/L2 control signal (S813).
  • the NCR-MT After cell selection/reselection, when the NCR-MT receives a UL grant through a successful RACH procedure, it delivers MSG3 to the serving base station through the RRCSetupRequest message, and when the serving base station delivers the RRCSetup message in response, the settings are applied. Afterwards, the RRCSetupComplete message is delivered to the serving base station. At this time, the RRCSetupRequest message may be delivered with an indicator indicating that it is NCR.
  • FIGS. 9A and 9B shows the detailed flow, which can correspond to the procedures shown in FIGS. 9A and 9B. In this example, the case of including the NCR support bit in the MIB/SIB is explained, but it is also possible to utilize the intra-Frequency Reselection bit.
  • 9A and 9B are flowcharts of how the NCR-MT uses the RRCSetupRequest message to announce that it is an NCR entity.
  • the NCR-MT (910) may be converted from an idle state to a connected state or may be powered on (S901).
  • the NCR-MT (910) receives SSBs radiated from surrounding cells (e.g., base station 1 (gNB 1 (930)) and base station 2 (gNB 2 (920)) as shown in FIG. 9A and connects the cell to the cell.
  • the signal strength of is derived, and based on this measurement, a cell that satisfies the cell selection conditions is selected (S902).
  • the cell selected by the NCT-MT (910) is that of gNB 2 (920). Assume it is a cell.
  • the NCR-MT (910) receives the MIB or SIB1 of the selected cell and confirms that the cell is not an NCR support cell, it assumes a cell barred state (S903) and connects to another cell (e.g., gNB 1).
  • a cell of (830) is selected (S904), and the MIB/SIB1 of the corresponding cell is received to check whether it is an NCR-supporting cell (S905).
  • the MIB/SIB1 may include an NCR support indicator indicating that the corresponding cell supports NCR.
  • the NCR-MT 910 can perform a random access procedure to the corresponding cell (S906).
  • the NCR-MT 910 may, for example, transmit (S906a) MSG 3 to the corresponding cell 930 through an RRCSetupRequest.
  • the RRCSetupRequest message includes an NCR-MT indicator indicating that it is an NCR-MT.
  • NCR-specific connection establishment cause (EstablishmentCause) and/or NCR-related ID may be included.
  • gNB supporting NCR broadcasts the NCR-support indication in MIB or SIB.
  • NCR-MT applies the configurations in MIB and SIB1 of the selected cell
  • UE can add 1-bit indication to indicate NCR-MT or NCR entity within RRCSetupRequest msg and transmit it upon obtaining UL grant.
  • legacy 'InitialUE-Identity' field can indicate NCR specific UE ID, or NCR specific UE ID can be further indicated in separate IE than 'initialUE-Identity' field.
  • 'EstablishmentCause' can further indicate 'NCR MT access' value
  • Serving gNB Upon receiving above RRCSetupRequest msg, Serving gNB identifies that the accessed UE is NCR-MT, and select the radio resource and schedule the resource accordingly for NCR MT (frequency /time domain resource assignment, MCS selection etc.) via PDCCH
  • D> serving gNB setup SRB1 and send RRCSetup msg to NCR-MT.
  • UE applies the received RRCSetup configuration, and generates RRCSetupComplete msg which can include: NCR specific entity ID (and/or UE ID, and/or FWD ID) either in legacy NAS msg 'Registration Request' or out , and transmit this.
  • the serving base station 930 based on the information received from the NCR-MT 910, confirms that the connected terminal is an NCR-MT and sets the NCR-specific master cell group (e.g., mac-CellGroupConfig, PhysicalCellGroupConfig) can be provided (S907). Such settings can be transmitted to the NCR-MT (910) through an RRCSetup message (S907a).
  • the NCR-MT 910 which has received NCR specific cell group settings for the MAC layer or PHY layer from the serving base station 930, can apply the corresponding cell group settings (S908).
  • the NCR-MT (910) can transmit (S909) a NAS message including a registration request to the serving base station (930) through the RRCSetupComplete message, and after establishing an RRC connection with the NCR-MT (910),
  • the serving base station 930 may transmit a Registration Request to the AMF 940 using the NGAP initial UE message (S910).
  • the NGAP initial UE message may also include an Establishment cause indicating that it is an RRC connection indicator for NCR control, obtained during the RRC connection process.
  • the ID of the NCR-MT or NCR entity, or NCR-Fwd ID may be included in the message.
  • This information can be transmitted from the serving base station 930 to the AMF 940 and used for authorization and authentication of the NCR entity in the core network 950 (S911, S912).
  • the authentication procedure between the AMF (940) and the core network (950) is the same as described above in FIGS. 8A and 8B.
  • the serving base station 930 may transmit control information for operation of the NCR-Fwd to the NCR-MT 910.
  • the configuration information of the L1/L2 channel for transmitting this control information may be transmitted to the NCR-MT 910 through a DL RRC message or RRCReconfiguration message (S913). More detailed settings transmitted at this time may be as follows.
  • NCR specific configurations i.e., PDCCH/PDSCH configuration for side control information channel, PUCCH/PUSCH configuration for side control information channel, configuration for DCI/UCI and MAC CE for side control information reception and transmission.
  • the NCR-MT 910 can receive side control information for NCR-Fwd from the serving base station 930 through the L1/L2 control signal (S914).

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Abstract

La présente invention concerne : une technique de communication pour fusionner une technologie de l'IDO avec un système de communication 5G pour prendre en charge un débit de transmission de données supérieur à celui d'un système 4G; et un système associé. La présente invention peut être appliquée à des services intelligents (par exemple, des maisons intelligentes, des bâtiments intelligents, des villes intelligentes, des voitures intelligentes ou des voitures connectées, des soins de santé, l'enseignement numérique, le commerce de détail, des services liés à la sécurité et à la sûreté, et analogues) sur la base de la technologie de communication 5G et de la technologie associée à l'IDO. La présente invention concerne un appareil et un procédé associés à un système de répéteur commandé par réseau.
PCT/KR2023/009850 2022-07-21 2023-07-11 Procédé et appareil de connexion initiale pour répéteur commandé par réseau dans un système de communication mobile de prochaine génération WO2024019396A1 (fr)

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