WO2021053827A1 - Terminal - Google Patents

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Publication number
WO2021053827A1
WO2021053827A1 PCT/JP2019/037092 JP2019037092W WO2021053827A1 WO 2021053827 A1 WO2021053827 A1 WO 2021053827A1 JP 2019037092 W JP2019037092 W JP 2019037092W WO 2021053827 A1 WO2021053827 A1 WO 2021053827A1
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WIPO (PCT)
Prior art keywords
access
network
npn
wireless
ue200a
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PCT/JP2019/037092
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English (en)
Japanese (ja)
Inventor
高橋　秀明
天楊 閔
Original Assignee
株式会社Ｎｔｔドコモ
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 株式会社Ｎｔｔドコモ filed Critical 株式会社Ｎｔｔドコモ
Priority to CN201980100184.XA priority Critical patent/CN114375587B/zh
Priority to PCT/JP2019/037092 priority patent/WO2021053827A1/fr
Priority to CN202410356346.9A priority patent/CN118019145A/zh
Publication of WO2021053827A1 publication Critical patent/WO2021053827A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer

Definitions

  • the present invention relates to a terminal that executes access control to a network.
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced
  • 5th generation mobile communication system for the purpose of further speeding up LTE.
  • Specifications also called 5G, New Radio (NR) or Next Generation (NG) are also underway.
  • NR defines the technology to provide high-reliability and low-latency communication (URLLC: Ultra-Reliable and Low Latency Communications).
  • Non-Public Network PLMN: Public Land Mobile Network
  • the NR stipulates that terminals for NPN (User Equipment, UE, hereinafter also referred to as NPN-UE) can access PLMN services via NPN or autonomously (Non-Patent Documents). 2).
  • NPN-UE User Equipment
  • Non-Patent Documents Non-Patent Documents
  • the above-mentioned NPN-UE access to PLMN services has the following problems. Specifically, if the NPN-UE cannot connect to the NPN due to an NPN failure or the like, the NPN-UE may request a connection with the PLMN.
  • NPN-UE may be used to provide URLLC and requires high quality of service (QoS), especially when a large number of NPN-UEs access PLMN all at once (connection request).
  • QoS quality of service
  • Wireless resources are tight, and there is a concern that it will adversely affect the communication of UE for PLMN (hereinafter, also referred to as PLMN-UE).
  • the present invention has been made in view of such a situation, and even when URLLC such as NPN-UE is provided and PLMN is accessed, the communication of other terminals such as PLMN-UE is adversely affected.
  • the purpose is to provide a terminal that can be suppressed.
  • One aspect of the present disclosure is to establish a connection between a control unit (access control unit 230) that controls access to a network and an access type indicating that the access type to the network is higher reliability or lower delay communication than other access types. It is a terminal (UE200A) including a transmission unit (connection message transmission unit 240) that transmits a message including a reason to the network.
  • a control unit access control unit 230
  • an access type indicating that the access type to the network is higher reliability or lower delay communication than other access types.
  • UE200A including a transmission unit (connection message transmission unit 240) that transmits a message including a reason to the network.
  • FIG. 1 is an overall schematic configuration diagram of the wireless communication system 10.
  • FIG. 2 is a functional block configuration diagram of the UE 200A.
  • FIG. 3 is a functional block configuration diagram of the gNB 100A.
  • FIG. 4 is a diagram showing an example of a communication sequence related to establishment of an RRC connection and access control between a terminal (UE200A) and a network.
  • FIG. 5 is a diagram showing a configuration example of RRCSetupRequest.
  • FIG. 6 is a diagram showing a configuration example of a mapping table used for access control in the UE 200A.
  • FIG. 7 is a diagram showing an example of the hardware configuration of gNB100A, gNB100B, UE200A and UE200B.
  • FIG. 1 is an overall schematic configuration diagram of the wireless communication system 10 according to the present embodiment.
  • the wireless communication system 10 is a wireless communication system according to 5G New Radio (NR).
  • NR 5G New Radio
  • the wireless communication system 10 may include a plurality of mobile communication networks. Specifically, the wireless communication system 10 includes PublicLandMobileNetwork20 (hereinafter, PLMN20) and Non-PublicNetwork40 (hereinafter, NPN40).
  • PLMN20 PublicLandMobileNetwork20
  • NPN40 Non-PublicNetwork40
  • PLMN20 may be called a public mobile communication network, a mobile communication network, a public terrestrial mobile network, etc.
  • PLMN20 includes a network node 30 and a radio base station 100A (hereinafter, gNB100A).
  • gNB100A radio base station 100A
  • PLMN20 may be interpreted as an operator (telecommunications carrier) that provides services using PLMN20.
  • Network node 30 is a network device that constitutes PLMN20. Specifically, the network node 30 may be interpreted as a communication node that realizes functions such as Access and Mobility Management Function (AMF) and Session Management Function (SMF).
  • AMF Access and Mobility Management Function
  • SMF Session Management Function
  • gNB100A is a wireless base station that complies with 5G (NR) and executes wireless communication according to 5G with user terminal 200A (User Equipment 200A, hereinafter UE200A) and user terminal 200B (User Equipment 200B, hereinafter UE200B). To do.
  • the gNB100A is also a network device constituting the PLMN20, and the gNB100A may realize some of the functions of the AMF or SMF in place of the AMF or SMF.
  • NPN40 may be called a non-public mobile communication network, a non-public network, a dedicated network, etc., and the NPN40 includes a radio base station 100B (hereinafter, gNB100B).
  • gNB100B radio base station 100B
  • NPN40 may be intended for single use of private entities such as enterprises, and can be deployed in various configurations using both virtual and physical elements. Specifically, it may be deployed as a completely standalone network (Stand-alone Non-Public Network (SNPN)), hosted by PLMN20, or provided as a slice of PLMN20.
  • SNPN Tin-alone Non-Public Network
  • the NPN may be called a Closed Access Group (CAG).
  • CAG Closed Access Group
  • wireless communication system 10 may support Non-Public Network (NPN) and NPN that provides coverage within a specific geographic area.
  • NPN Non-Public Network
  • 5G systems can support both physical and virtual NPNs and may support standalone operation of NPNs.
  • the 5G system may provide access to the subscribed PLMN service via NPN, or access to the selected NPN service via PLMN.
  • wireless communication system 10 supports the mechanism for UE200A for NPN to identify and select NPN.
  • a mobile communication network including PLMN20 and NPN40 different from PLMN20 may be simply expressed as a network. That is, the network may include PLMN20 and NPN40.
  • GNB100A forms cell C10.
  • gNB100B forms cell C20.
  • UE200B (PLMN-UE) for PLMN is located in cell C10 and can be connected to gNB100A.
  • the UE200A (NPN-UE) for NPN can also access the subscribed PLMN service via NPN, as described above.
  • UE200A is in cell C20 and can be connected to gNB100B. If access to the selected NPN service is provided via PLMN, the UE200B can also access the NPN service.
  • UE200B for PLMN may be understood as a terminal having a contract with an operator who provides services using PLMN20.
  • the UE200A for NPN does not necessarily have to be a terminal that has a contract with an operator that provides services using NPN40, but even if it is understood that the use of services using NPN40 is permitted. Good.
  • gNB and UE are Massive MIMO that generates a beam with higher directivity by controlling radio signals transmitted from multiple antenna elements, and carrier aggregation (CA) that bundles and uses multiple component carriers (CC). ), And dual connectivity (DC) that communicates between the UE and each of the two NG-RAN Nodes at the same time.
  • Massive MIMO that generates a beam with higher directivity by controlling radio signals transmitted from multiple antenna elements
  • CA carrier aggregation
  • CC component carriers
  • DC dual connectivity
  • FIG. 2 is a functional block configuration diagram of the UE 200A.
  • the UE 200A includes a wireless transmission unit 210, a wireless reception unit 220, an access control unit 230, a connection message transmission unit 240, and an access category holding unit 250.
  • the wireless transmitter 210 transmits a wireless signal according to the 5G specifications.
  • the wireless receiver 220 receives a wireless signal according to the 5G specifications.
  • the access control unit 230 controls access to the UE200A network. Specifically, the access control unit 230 controls access (which may be called a connection) of the UE 200A to PLMN20 and NPN40. In the present embodiment, the access control unit 230 constitutes a control unit.
  • the access control unit 230 executes access control to the network in accordance with the integrated access control (UAC) specified in 3GPP TS24.501 and the like.
  • UAC integrated access control
  • the access control unit 230 determines a table (Mapping table for access) held in the access category holding unit 250 in order to determine an access type (which may be called an access category) applicable to the access attempt (attempt) of the UE 200A. Check the rules of categories) (see TS24.501 Table 4.5.2.2) and use the access categories that match the barring check.
  • the access control unit 230 controls access to the network based on the access type (access category) held in the access category holding unit 250.
  • Access control unit 230 executes access control for access attempts defined by the following event list.
  • the connection message transmitter 240 transmits a message requesting a connection to the network. Specifically, the connection message transmission unit 240 transmits a message including a reason for establishing a connection with the network (establishment cause) to the network. In the present embodiment, the connection message transmission unit 240 constitutes a transmission unit.
  • connection message transmitter 240 uses mo (mobile originating) -Data, mo-VoiceCall, mo-VideoCall, mo-SMS (Short Message Service), mps (multimedia priority service) -PriorityAccess, mcs (mission critical) as the reason for establishing the connection. service)-Can send messages containing Priority Access.
  • connection message transmission unit 240 can also transmit a message including high-reliability and low-delay communication (URLLC) as a reason for establishing the connection. That is, the connection message transmission unit 240 can send a message to the network including a connection establishment reason indicating that the access type (access category) to the network is higher reliability or lower delay communication than other access types. ..
  • URLLC high-reliability and low-delay communication
  • URLLC used as the reason for establishing a connection
  • it may be URLLC service (low latency service), industrial IoT (IIOT) service, high security, high reliability service, high QoS service, or the like. That is, any name may be used as long as it indicates high demanding at various service levels such as speed (delay), radio quality, and error tolerance.
  • the connection message transmission unit 240 can send an RRC message including the reason for establishing the connection. Specifically, the connection message transmission unit 240 can send an RRCSetupRequest including establishment cause such as URLLC.
  • the connection message transmission unit 240 may use another RRC message (for example, RRCReconfiguration), or may use a message of another layer if it can be shown that the access type is URLLC.
  • the transmission timing of the message (specifically, the reason for establishing the connection) is not particularly limited, and may be any time from the start to the completion of the connection procedure with the network, or even after the connection with the network is completed.
  • the connection message transmission unit 240 can transmit a message including the reason for establishing the connection to the PLMN 20.
  • the access category holding unit 250 holds information about the access category. As described above, the access category may be called an access type (type) or the like.
  • the access category holding unit 250 holds the table (Mapping table for access categories, see FIG. 6) specified in TS24.501 Table 4.5.2.2.
  • the table includes URLLC as a new access category.
  • the access category holding unit 250 constitutes a holding unit that holds an access type (access category) associated with high-reliability or low-delay communication.
  • FIG. 3 is a functional block configuration diagram of the gNB 100A.
  • the gNB100A includes a wireless transmission unit 110, a wireless reception unit 120, a connection processing unit 130, and an access regulation unit 140.
  • the wireless transmitter 110 transmits a wireless signal according to the 5G specifications.
  • the wireless receiver 120 receives a wireless signal according to the 5G specifications.
  • connection processing unit 130 executes processing related to connection with UE200A (and UE200B, the same applies hereinafter). Specifically, the connection processing unit 130 executes processing related to the connection (RRC connection) in the RRC layer.
  • connection processing unit 130 sets a wireless bearer (Signalling Radio Bearer (SRB), Data Radio Bearer (DRB)) via a channel set as UE200A. Further, the connection processing unit 130 transmits / receives Protocol Data Unit (PDU) and Service Data Unit (SDU), specifically, a plurality of layers (medium access control layer (MAC), wireless link control layer (RLC), and Performs PDU / SDU assembly / decomposition at the Packet Data Convergence Protocol Layer (PDCP), etc.).
  • SRB Signal Radio Bearer
  • DRB Data Radio Bearer
  • PDU Protocol Data Unit
  • SDU Service Data Unit
  • MAC medium access control layer
  • RLC wireless link control layer
  • PDCP Packet Data Convergence Protocol Layer
  • the Channels include control channels and data channels.
  • the control channel includes PDCCH (Physical Downlink Control Channel), PUCCH (Physical Uplink Control Channel), PRACH (Physical Random Access Channel), PBCH (Physical Broadcast Channel) and the like.
  • the data channels include PDSCH (Physical Downlink Shared Channel) and PUSCH (Physical Uplink Shared Channel).
  • PDSCH Physical Downlink Shared Channel
  • PUSCH Physical Uplink Shared Channel
  • the reference signal includes Demodulation reference signal (DMRS), Sounding Reference Signal (SRS), Phase Tracking Reference Signal (PTRS), and Channel State Information-Reference Signal (CSI-RS), and the signal includes a channel.
  • DMRS Demodulation reference signal
  • SRS Sounding Reference Signal
  • PTRS Phase Tracking Reference Signal
  • CSI-RS Channel State Information-Reference Signal
  • RRC layer and other control signals and reference signals are included.
  • the data may mean data transmitted via a data channel.
  • Access control unit 140 regulates access to the UE200A network. Specifically, the access control unit 140 implements access control in accordance with UAC specified in 3GPP TS24.501 and the like.
  • the access regulation unit 140 acquires the access category to which the access regulation is applied based on a plurality of access categories defined in the network.
  • the access regulation unit 140 may acquire the access category to which the access regulation is applied from the network node 30, or may determine the access category to which the access regulation is applied by itself according to the load status of the gNB 100A. Further, the number of access categories to which access regulation is applied at the same time may be one or a plurality.
  • the access control unit 140 notifies the acquired access category in cell C20. Specifically, the access control unit 140 notifies the acquired access category in the cell C20 by using the system information, that is, the System Information Block (SIB).
  • SIB System Information Block
  • the type of SIB used for the notification is not particularly limited, but typically uac-BarringInfo included in SIB1 is used.
  • NPN-UE may be used to provide URLLC, the required quality of service (QoS) is high, and the required wireless resources tend to increase. Therefore, if the success of NPN-UE is allowed without restriction and without limitation, PLMN-UE may have inconveniences such as difficulty in starting a random access procedure using RACH.
  • QoS quality of service
  • the NPN-UE can make an RRC connection to the PLMN20.
  • QoS quality of service
  • this embodiment suppresses adverse effects on PLMN-UE by effectively regulating access to the NPN-UE network (PLMN20) used to provide URLLC while following the UAC mechanism.
  • PLMN20 NPN-UE network
  • a new access category (high reliability / low latency communication) is defined, and UE access requests are controlled according to UAC.
  • the new access category (high-reliability, low-latency communication) is positioned as a category that requires support for extremely low latency and extremely high communication service availability. This may mean very high reliability.
  • the overall service delay depends on the delay of the wireless interface, transmission within the 5G system, transmission to servers outside the 5G system, and data processing.
  • Scenarios that require such very low latency and very high communication service availability support include motion control, discrete automation, process automation, power distribution automation, intelligent transportation systems, remote control, and rail communications. And AR (Augmented Reality) / VR (Virtual Reality).
  • FIG. 4 shows an example of a communication sequence related to establishment of an RRC connection and access control between a terminal (UE200A) and a network.
  • the UE200A (NPN-UE) sends an RRCSetupRequest to the network (here, assuming the transition from NPN40 to PLMN20 (cell reselection)) (S10).
  • the RRCSetupRequest includes the establishment cause of the RRC connection.
  • FIG. 5 shows a configuration example of RRCSetupRequest.
  • the RRCSetupRequest includes an establishment cause.
  • URLLC service (see underlined part), which means highly reliable and low-delay communication, is defined.
  • UE200A sends an RRC Setup Request with URLLC service set as the reason for establishing a connection.
  • the network executes the RRC connection establishment procedure based on the received RRCSetupRequest and establishes the RRC connection with the UE200A (S20 to S40). In addition, settings such as SRB and DRB (not shown in FIG. 4) are executed, and the UE200A starts communication via the network.
  • the network can activate access restrictions according to the congestion status of the network.
  • the network activates access restrictions for the URLLC service.
  • the network sets the URLLC service in the uac-Access Category of uac-BarringInfo included in SIB1, and SIB1 including such uac-BarringInfo is transmitted to UE200A (S50).
  • URLLC service by UE200A is subject to access regulation
  • other services for example, mo-Data, mo-VoiceCall, etc.
  • UE200A executes access control based on the contents of uac-BarringInfo included in the received SIB1 (S60).
  • FIG. 6 shows a configuration example of a mapping table used for access control in UE200A. Specifically, FIG. 6 is a configuration example of Mapping table for access categories defined in 3GPP TS24.501 Table 4.5.2.2.
  • the mapping table includes URLLC as an access category.
  • the UE200A first executes an access control check to determine whether access is permitted.
  • the UE200A checks the rules in the mapping table and uses the access category that matches the barring check to determine the access category applicable to the attempt.
  • the access category with the lowest rule number is selected. Further, if the access attempt matches the access category definition of a plurality of operator definitions, the UE may select the access category from the access category definition of the operator definition having the lowest priority value.
  • UE200A (same for UE200B) indicates that the access type (access category) to the network (PLMN20) is higher reliability or lower latency communication (URLLC) than other access types (connection establishment reason).
  • a message (RRCSetupRequest) containing (establish cause) can be sent to the network (PLMN20).
  • the network (specifically, gNB100A) can recognize that UE200A (NPN-UE) accesses PLMN20 to provide URLLC.
  • NPN-UE UE200A
  • the network can efficiently regulate the URLLC service, which has a high required quality of service (QoS) and a tendency to increase the required wireless resources, if necessary.
  • QoS quality of service
  • the UE 200A can control access to the network based on the access type it holds, specifically, the mapping table shown in FIG. Since the mapping table includes URLLC as described above, the UE200A can realize reliable access control for URLLC. As a result, adverse effects on communication of other terminals such as PLMN-UE can be reliably suppressed.
  • access regulation and access control are executed especially for NPN-UE that provides URLLC. Therefore, even when NPN-UE transitions to PLMN20, access by NPN-UE associated with URLLC can be reliably regulated. As a result, adverse effects on communication of other terminals such as PLMN-UE can be suppressed more reliably.
  • access regulation and access control for UE200A for NPN40 that provides URLLC have been described, but URLLC, that is, high-reliability and low-delay communication is provided. If it is a terminal, access regulation and access control may be executed not necessarily for NPN-UE but for PLMN-UE.
  • each functional block is realized by any combination of at least one of hardware and software.
  • the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one physically or logically coupled device, or two or more physically or logically separated devices can be directly or indirectly (eg, for example). , Wired, wireless, etc.) and may be realized using these plurality of devices.
  • the functional block may be realized by combining the software with the one device or the plurality of devices.
  • Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and assumption.
  • broadcasting notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but only these. I can't.
  • a functional block (constituent unit) for functioning transmission is called a transmitting unit or a transmitter.
  • the method of realizing each of them is not particularly limited.
  • FIG. 7 is a diagram showing an example of the hardware configuration of the device.
  • the device may be configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.
  • the word “device” can be read as a circuit, device, unit, etc.
  • the hardware configuration of the device may be configured to include one or more of each of the devices shown in the figure, or may be configured not to include some of the devices.
  • Each functional block of the device (see FIGS. 2 and 3) is realized by any hardware element of the computer device or a combination of the hardware elements.
  • the processor 1001 performs an operation by loading predetermined software (program) on the hardware such as the processor 1001 and the memory 1002, and controls the communication by the communication device 1004, or the memory. It is realized by controlling at least one of reading and writing of data in 1002 and storage 1003.
  • predetermined software program
  • Processor 1001 operates, for example, an operating system to control the entire computer.
  • the processor 1001 may be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, and the like.
  • CPU central processing unit
  • the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these.
  • a program program code
  • a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used.
  • the various processes described above may be executed by one processor 1001 or may be executed simultaneously or sequentially by two or more processors 1001.
  • Processor 1001 may be implemented by one or more chips.
  • the program may be transmitted from the network via a telecommunication line.
  • the memory 1002 is a computer-readable recording medium, and is composed of at least one such as ReadOnlyMemory (ROM), ErasableProgrammableROM (EPROM), Electrically ErasableProgrammableROM (EEPROM), and RandomAccessMemory (RAM). May be done.
  • the memory 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like.
  • the memory 1002 can store a program (program code), a software module, or the like that can execute the method according to the embodiment of the present disclosure.
  • the storage 1003 is a computer-readable recording medium, for example, an optical disk such as Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disk, an optical magnetic disk (for example, a compact disk, a digital versatile disk, or a Blu-ray). It may consist of at least one (registered trademark) disk), smart card, flash memory (eg, card, stick, key drive), floppy (registered trademark) disk, magnetic strip, and the like.
  • Storage 1003 may be referred to as auxiliary storage.
  • the recording medium described above may be, for example, a database, server or other suitable medium containing at least one of the memory 1002 and the storage 1003.
  • the communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like.
  • the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be composed of.
  • FDD frequency division duplex
  • TDD time division duplex
  • the input device 1005 is an input device (for example, keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts input from the outside.
  • the output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside.
  • the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
  • Bus 1007 may be configured using a single bus or may be configured using different buses for each device.
  • the device includes hardware such as a microprocessor, a digital signal processor (Digital Signal Processor: DSP), an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), and a Field Programmable Gate Array (FPGA).
  • the hardware may implement some or all of each functional block.
  • processor 1001 may be implemented using at least one of these hardware.
  • information notification includes physical layer signaling (for example, Downlink Control Information (DCI), Uplink Control Information (UCI), upper layer signaling (eg, RRC signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block)). (MIB), System Information Block (SIB)), other signals or a combination thereof.
  • DCI Downlink Control Information
  • UCI Uplink Control Information
  • RRC signaling may also be referred to as an RRC message, for example, RRC Connection Setup. ) Message, RRC Connection Reconfiguration message, etc. may be used.
  • LTE LongTermEvolution
  • LTE-A LTE-Advanced
  • SUPER3G IMT-Advanced
  • 4G 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • FutureRadioAccess FAA
  • NewRadio NR
  • W-CDMA registered trademark
  • GSM registered trademark
  • CDMA2000 Code Division Multiple Access 2000
  • UMB UltraMobile Broadband
  • IEEE802.11 Wi-Fi (registered trademark)
  • IEEE802.16 WiMAX®
  • IEEE802.20 Ultra-WideBand (UWB), Bluetooth®, and other systems that utilize appropriate systems and at least one of the next generation systems extended based on them.
  • a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).
  • the specific operation performed by the base station in the present disclosure may be performed by its upper node.
  • various operations performed for communication with a terminal are performed by the base station and other network nodes other than the base station (for example, MME or). It is clear that it can be done by at least one of (but not limited to, S-GW, etc.).
  • S-GW network node
  • the case where there is one network node other than the base station is illustrated above, it may be a combination of a plurality of other network nodes (for example, MME and S-GW).
  • Information and signals can be output from the upper layer (or lower layer) to the lower layer (or upper layer).
  • Input / output may be performed via a plurality of network nodes.
  • the input / output information may be stored in a specific location (for example, memory) or may be managed using a management table. Input / output information can be overwritten, updated, or added. The output information may be deleted. The input information may be transmitted to another device.
  • the determination may be made by a value represented by 1 bit (0 or 1), by a true / false value (Boolean: true or false), or by comparing numerical values (for example, a predetermined value). It may be done by comparison with the value).
  • the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.
  • Software whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name, is an instruction, instruction set, code, code segment, program code, program, subprogram, software module.
  • Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted.
  • software, instructions, information, etc. may be transmitted and received via a transmission medium.
  • a transmission medium For example, a website, where the software uses at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technology (infrared, microwave, etc.).
  • wired technology coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.
  • wireless technology infrared, microwave, etc.
  • the information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.
  • a channel and a symbol may be a signal (signaling).
  • the signal may be a message.
  • the component carrier (CC) may be referred to as a carrier frequency, a cell, a frequency carrier, or the like.
  • system and “network” used in this disclosure are used interchangeably.
  • the information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values from predetermined values, or using other corresponding information. It may be represented.
  • the radio resource may be indexed.
  • Base Station BS
  • Wireless Base Station Wireless Base Station
  • NodeB NodeB
  • eNodeB eNodeB
  • gNodeB gNodeB
  • Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.
  • the base station can accommodate one or more (for example, three) cells (also called sectors). When a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (Remote Radio)). Communication services can also be provided by Head: RRH).
  • a base station subsystem eg, a small indoor base station (Remote Radio)
  • Communication services can also be provided by Head: RRH).
  • cell refers to a base station that provides communication services in this coverage, and part or all of the coverage area of at least one of the base station subsystems.
  • MS mobile station
  • UE user equipment
  • terminal terminal
  • Mobile stations can be subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless, depending on the trader. It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
  • At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, or the like.
  • At least one of the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like.
  • the moving body may be a vehicle (eg, car, airplane, etc.), an unmanned moving body (eg, drone, self-driving car, etc.), or a robot (manned or unmanned). ) May be.
  • at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation.
  • at least one of a base station and a mobile station may be an Internet of Things (IoT) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be read as a mobile station (user terminal, the same applies hereinafter).
  • communication between a base station and a mobile station has been replaced with communication between a plurality of mobile stations (for example, it may be called Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.).
  • D2D Device-to-Device
  • V2X Vehicle-to-Everything
  • Each aspect / embodiment of the present disclosure may be applied to the configuration.
  • the mobile station may have the functions of the base station.
  • words such as "up” and “down” may be read as words corresponding to inter-terminal communication (for example, "side").
  • an uplink channel, a downlink channel, and the like may be read as a side channel.
  • the mobile station in the present disclosure may be read as a base station.
  • the base station may have the functions of the mobile station.
  • the radio frame may be composed of one or more frames in the time domain. Each one or more frames in the time domain may be referred to as a subframe. Subframes may further consist of one or more slots in the time domain.
  • the subframe may have a fixed time length (eg, 1 ms) that is independent of numerology.
  • the numerology may be a communication parameter that applies to at least one of the transmission and reception of a signal or channel.
  • Numerology includes, for example, SubCarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, wireless frame configuration, transmission / reception.
  • SCS SubCarrier Spacing
  • TTI transmission time interval
  • At least one of a specific filtering process performed by the machine in the frequency domain, a specific windowing process performed by the transmitter / receiver in the time domain, and the like may be indicated.
  • the slot may be composed of one or more symbols (Orthogonal Frequency Division Multiple Access (OFDM) symbol, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol, etc.) in the time domain. Slots may be unit of time based on numerology.
  • OFDM Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • the slot may include a plurality of mini slots. Each minislot may consist of one or more symbols in the time domain.
  • the mini-slot may also be referred to as a sub-slot.
  • a minislot may consist of a smaller number of symbols than the slot.
  • PDSCH (or PUSCH) transmitted in time units larger than the minislot may be referred to as PDSCH (or PUSCH) mapping type A.
  • the PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (or PUSCH) mapping type B.
  • the wireless frame, subframe, slot, minislot and symbol all represent the time unit when transmitting a signal.
  • the radio frame, subframe, slot, minislot and symbol may have different names corresponding to each.
  • one subframe may be referred to as a transmission time interval (TTI)
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI slot or one minislot
  • at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (eg, 1-13 symbols), or a period longer than 1ms. It may be.
  • the unit representing TTI may be called a slot, a mini slot, or the like instead of a subframe.
  • TTI refers to, for example, the minimum time unit of scheduling in wireless communication.
  • a base station schedules each user terminal to allocate radio resources (frequency bandwidth that can be used in each user terminal, transmission power, etc.) in TTI units.
  • the definition of TTI is not limited to this.
  • the TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation.
  • the time interval for example, the number of symbols
  • the transport block, code block, code word, etc. may be shorter than the TTI.
  • one or more TTIs may be the minimum time unit for scheduling. Further, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
  • a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel.8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, or the like.
  • TTIs shorter than normal TTIs may also be referred to as shortened TTIs, short TTIs, partial TTIs (partial or fractional TTIs), shortened subframes, short subframes, minislots, subslots, slots, and the like.
  • the long TTI (for example, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms
  • the short TTI (for example, shortened TTI, etc.) may be read as less than the TTI length of the long TTI and 1 ms. It may be read as a TTI having the above TTI length.
  • the resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers in the frequency domain.
  • the number of subcarriers contained in RB may be the same regardless of numerology, and may be, for example, 12.
  • the number of subcarriers contained in the RB may be determined based on numerology.
  • the time domain of RB may include one or more symbols, and may have a length of 1 slot, 1 mini slot, 1 subframe, or 1 TTI.
  • Each 1TTI, 1 subframe, etc. may be composed of one or a plurality of resource blocks.
  • One or more RBs include a physical resource block (Physical RB: PRB), a sub-carrier group (Sub-Carrier Group: SCG), a resource element group (Resource Element Group: REG), a PRB pair, an RB pair, and the like. May be called.
  • Physical RB Physical RB: PRB
  • SCG sub-carrier Group
  • REG resource element group
  • PRB pair an RB pair, and the like. May be called.
  • the resource block may be composed of one or a plurality of resource elements (ResourceElement: RE).
  • RE resource elements
  • 1RE may be a radio resource area of 1 subcarrier and 1 symbol.
  • Bandwidth Part (which may also be called partial bandwidth, etc.) may represent a subset of consecutive common resource blocks (RBs) for a neurology in a carrier. Good.
  • the common RB may be specified by the index of the RB with respect to the common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • BWP may include BWP for UL (UL BWP) and BWP for DL (DL BWP).
  • BWP for UL
  • DL BWP BWP for DL
  • One or more BWPs may be set in one carrier for the UE.
  • At least one of the configured BWPs may be active, and the UE may not expect to send or receive a given signal / channel outside the active BWP.
  • “cell”, “carrier” and the like in this disclosure may be read as “BWP”.
  • the above-mentioned structures such as wireless frames, subframes, slots, mini slots and symbols are merely examples.
  • the number of subframes contained in a wireless frame the number of slots per subframe or wireless frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, included in RB.
  • the number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP) length, and other configurations can be changed in various ways.
  • connection means any direct or indirect connection or connection between two or more elements, and each other. It can include the presence of one or more intermediate elements between two “connected” or “combined” elements.
  • the connection or connection between the elements may be physical, logical, or a combination thereof.
  • connection may be read as "access”.
  • the two elements use at least one of one or more wires, cables and printed electrical connections, and, as some non-limiting and non-comprehensive examples, the radio frequency domain.
  • Electromagnetic energies with wavelengths in the microwave and light (both visible and invisible) regions, etc. can be considered to be “connected” or “coupled” to each other.
  • the reference signal can also be abbreviated as Reference Signal (RS), and may be called a pilot (Pilot) depending on the applicable standard.
  • RS Reference Signal
  • Pilot pilot
  • references to elements using designations such as “first”, “second” as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted there, or that the first element must somehow precede the second element.
  • determining and “determining” used in this disclosure may include a wide variety of actions.
  • “Judgment” and “decision” are, for example, judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigation (investigating), search (looking up, search, inquiry). (For example, searching in a table, database or another data structure), ascertaining may be regarded as “judgment” or “decision”.
  • judgment and “decision” are receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access.
  • Accessing (for example, accessing data in memory) may be regarded as "judgment” or “decision”.
  • judgment and “decision” mean that the things such as solving, selecting, choosing, establishing, and comparing are regarded as “judgment” and “decision”. Can include. That is, “judgment” and “decision” may include considering some action as “judgment” and “decision”. Further, “judgment (decision)” may be read as “assuming”, “expecting”, “considering” and the like.
  • the term "A and B are different” may mean “A and B are different from each other”.
  • the term may mean that "A and B are different from C”.
  • Terms such as “separate” and “combined” may be interpreted in the same way as “different”.
  • Wireless communication system 20 PLMN 30 network nodes 40 NPN 100A, 100B gNB 110 Wireless transmitter 120 Wireless receiver 130 Connection processing unit 140 Access control unit 200A, 200B UE 210 Wireless transmitter 220 Wireless receiver 230 Access control unit 240 Connection message transmitter 250 Access category holder 1001 Processor 1002 Memory 1003 Storage 1004 Communication device 1005 Input device 1006 Output device 1007 Bus

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

Abstract

L'invention concerne un UE (200A) qui contrôle l'accès à un réseau et à partir de celui-ci. L'UE (200A) transmet au réseau un message comprenant une cause d'établissement de connexion indiquant que le type d'accès au réseau est une communication plus fiable ou à latence inférieure par rapport à un autre type d'accès.
PCT/JP2019/037092 2019-09-20 2019-09-20 Terminal WO2021053827A1 (fr)

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