WO2020166031A1 - Dispositif terminal, dispositif de station de base et procédé de communication sans fil - Google Patents

Dispositif terminal, dispositif de station de base et procédé de communication sans fil Download PDF

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Publication number
WO2020166031A1
WO2020166031A1 PCT/JP2019/005435 JP2019005435W WO2020166031A1 WO 2020166031 A1 WO2020166031 A1 WO 2020166031A1 JP 2019005435 W JP2019005435 W JP 2019005435W WO 2020166031 A1 WO2020166031 A1 WO 2020166031A1
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WO
WIPO (PCT)
Prior art keywords
terminal device
version
information
base station
conforming
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Application number
PCT/JP2019/005435
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English (en)
Japanese (ja)
Inventor
賢一 木原
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ソフトバンク株式会社
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Priority to PCT/JP2019/005435 priority Critical patent/WO2020166031A1/fr
Publication of WO2020166031A1 publication Critical patent/WO2020166031A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • 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
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters

Definitions

  • the present invention relates to a terminal device, a base station device, and a wireless communication method.
  • NR New Radio
  • LTE Long Term Evolution
  • URLLC Ultra-Reliable and Low Latency Communication
  • IoT Internet of Things
  • NR has a high degree of freedom in setting the frequency bandwidth in order to support high-speed communication between the base station device and the terminal device. For example, in NR, it is possible to add a new frequency bandwidth that is not specified in the previous release.
  • Non-Patent Documents 1 and 2 when a use band is assigned to a terminal device as the lowest frequency band among frequency bands of a newly defined bandwidth, it affects signals of other adjacent services (for example, PHS). there is a possibility. Therefore, in order to prevent the above-described interference, it is possible to transmit control information for suppressing communication power to the terminal device (see Non-Patent Documents 1 and 2).
  • Non-Patent Documents 1 and 2 the terminal device that complies with the standard of the earlier release is recognized. If the controllable information includes the newly added control information, the terminal device may stop operating.
  • the present invention can prevent the operation of the terminal device conforming to the first version (for example, the preceding release) from being stopped, and the second version (for example, newly added). It is an object of the present invention to provide a technique capable of appropriately executing communication control of a terminal device conforming to a subsequent release corresponding to a certain bandwidth).
  • a base station device is a base station device that performs wireless communication with a terminal device, and includes a control information generation unit that generates control information that controls communication of the terminal device, and control information for the terminal device.
  • a terminal device is a terminal device that performs wireless communication with a base station device, and controls a communication of the terminal device based on the control information and a receiving unit that receives control information from the base station device.
  • the terminal device is configured so that it is not recognized by the device and recognized by the second terminal device, and the terminal device is the second terminal device.
  • the control information for controlling the communication of the terminal device includes the first information complying with the first version and the second information complying with the second version different from the first version. ..
  • the first information is configured to be recognized by both the first terminal device conforming to the first version and the second terminal device conforming to the second version, and the second information is the first information.
  • the first terminal device is not recognized, and the second terminal device is recognized. Therefore, the control information includes the second information in a form that is not recognized by the first terminal device conforming to the first version. Therefore, it is possible to prevent the operation of the terminal device conforming to the first version from being stopped, and it is possible to appropriately execute the communication control of the terminal device conforming to the second version. ..
  • FIG. 1 is a schematic configuration diagram showing an example of a configuration of a wireless communication system according to an embodiment of the present invention.
  • FIG. 2 is a conceptual diagram showing an example of a conventional communication control process.
  • FIG. 3 is a conceptual diagram showing an example of communication control processing according to the embodiment of the present invention.
  • FIG. 4 is a schematic configuration diagram showing an example of the configuration of the base station apparatus according to the embodiment of the present invention.
  • FIG. 5 is a schematic configuration diagram showing an example of the configuration of the terminal device according to the embodiment of the present invention.
  • FIG. 6 is a flowchart showing an example of communication control processing according to the embodiment of the present invention.
  • FIG. 7 is a diagram showing an example of the hardware configuration of the computer according to the embodiment of the present invention.
  • the wireless communication system according to the embodiment of the present invention targets a wireless communication standard regarding NR (5G: Fifth Generation), but is not limited thereto.
  • NR 5G: Fifth Generation
  • the present invention is LTE or LTE? It can also be applied to the wireless communication standard regarding Advanced. Further, it is also applicable to a wireless communication system using NR as a part of the wireless communication system.
  • the present invention can be applied to any wireless communication system including at least a terminal device and a base station device, and can also be applied to future wireless communication systems.
  • Advanced is also called E-UTRA (Evolved Universal Terrestrial Radio Access), its meaning is the same.
  • Standard means an international standard, for example, NR or LTE/LTE? Includes international standards such as Advanced.
  • Release means the status of revision within the standard. “Release” includes, for example, LTE release 9, or LTE release 10 indicating a release in which LTE release 9 is revised.
  • “Version” is information that identifies “standard” or “release”.
  • the “first version” is a version established before the establishment of the “second version”.
  • the "first version” may be the LTE standard and the “second version” may be the NR standard.
  • the "first version” is release 15 in the NR standard (for example, the above-described preceding release), and the “second version” is release 16 in the NR standard that is the same standard (for example, the above-mentioned new addition). Subsequent releases corresponding to the allocated bandwidth).
  • the area (cover area) formed by the base station device is called a cell, and E-UTRA and 5G are cellular communication systems constructed by a plurality of cells.
  • E-UTRA and 5G are cellular communication systems constructed by a plurality of cells.
  • either the TDD (Time Division Duplex) or the FDD (Frequency Division Duplex) method may be applied, or a different method may be applied for each cell.
  • FIG. 1 is a schematic configuration diagram showing an example of the configuration of a wireless communication system according to an embodiment of the present invention.
  • the terminal device 1a or the terminal device 1n is wirelessly connected to the base station device 2a or the base station device 2n. Further, each of the terminal device 1a or the terminal device 1n may be wirelessly connected to the base station device 2a and the base station device 2n at the same time.
  • E-UTRA or 5G can be used for the base station device 2a and the base station device 2n.
  • the base station device 2 may use 5G and the base station device 2n may use E-UTRA, or vice versa.
  • the base station apparatus in E-UTRA is called an eNB (evolved NodeB), and the base station apparatus in NR is called a gNB (g-NodeB).
  • eNB evolved NodeB
  • g-NodeB base station apparatus
  • a terminal device in E-UTRA and NR is called a UE (User Equipment).
  • the base station apparatus gNB in NR may connect with a terminal device using a part (BWP:Carrier bandwidth part) of the frequency band used.
  • BWP Carrier bandwidth part
  • the term “cell” includes BWP.
  • terminal devices 1a and 1n are illustrated as the n terminal devices 1 in the figure. However, in the following description, when these n terminal devices 1 are described without distinction, some of the reference numerals are omitted and they are simply referred to as “terminal device 1 ”. Further, in the figure, the base station device 2a and the base station device 2n are illustrated as the n base station devices 2. However, in the following description, in the case where the n base station devices 2 are described without distinction, some reference numerals are omitted and the base station devices 2 are simply referred to as "base station devices 2".
  • the terminal device 1 may be connected to the base station device 2 in cell units, for example, and may be connected using a plurality of cells (carrier aggregation).
  • the base station device initially connected is the master node (MN: Master Node), and the base station device additionally connected is the secondary node ( SN: Secondary Node).
  • the base station devices are connected by a base station interface.
  • the base station device 2 and the core device 4 are connected by a core interface.
  • the base station interface is used for exchanging control signals necessary for handover and cooperative operation between base station devices.
  • the core device 4 has, for example, the base station device 2 as a subordinate thereof, and mainly handles load control between the base station devices, movement control such as calling (paging) of the terminal device 1 and location registration.
  • the terminal device 1 and the base station device 2 send and receive RRC messages in the radio resource control (RRC: Radio Resource Control) layer.
  • RRC Radio Resource Control
  • the terminal device 1 and the base station device 2 transmit/receive a MAC control element (MACCE:MACControlElement) in a medium access control (MAC:MediumAccessControl) layer.
  • the RRC message is transmitted as an RRC PDU (Protocol Data Unit), and as a logical channel to be mapped, a common control channel (CCCH: Common Control Channel), a dedicated control channel (DCCH: Dedicated Control Channel), and a paging control channel (PCCH:PCCH: Paging Control Channel), broadcast control channel (BCCH: Broadcast Control Channel), or multicast control channel (MCCH: Multicast Control Channel) is used.
  • the MAC CE is transmitted as a MAC PDU (or MAC subPDU).
  • the MAC sub PDU is equal to a service data unit (SDU: Service Data Unit) in the MAC layer to which, for example, an 8-bit header is added, and the MAC PDU includes one or more MAC sub PDUs.
  • SDU Service Data Unit
  • PBCH Physical Broadcast Channel
  • PRACH Physical RandomAccess Channel
  • PDCCH Physical Downlink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • a synchronization signal Primary Synchronization Signal, Secondary Synchronization Signal
  • PUCCH Physical Uplink Control Channel
  • PDSCH Physical Downlink Shared Channel
  • SRS Scheduling Reference Signal
  • DMRS Demodulation Reference Signal
  • the physical broadcast channel PBCH is transmitted from the base station device to the terminal device, and is used to notify common parameters (broadcast information, system information) in cells under the control of the base station device.
  • the system information is further classified into a master information block (MIB) and a system information block (SIB).
  • the system information block is further subdivided and transmitted as SIB1, SIB2,....
  • the system information includes information necessary for connecting to the cell.
  • the MIB includes a system frame number and information indicating whether or not camping on the cell is possible.
  • the SIB1 includes parameters for calculating cell quality (cell selection parameters), cell common channel information (random access control information, PUCCH control information, PUSCH control information), and scheduling information of other system information. include.
  • the physical random access channel PRACH is used to transmit a random access preamble.
  • the PRACH is generally used in a state where uplink synchronization with the base station apparatus is not established, and is used for transmission timing adjustment information (timing advance) and uplink radio resource request.
  • the radio resource capable of transmitting the random access preamble is transmitted to the terminal device using the broadcast information.
  • the physical downlink control channel PDCCH is transmitted from the base station apparatus to notify the terminal apparatus of downlink control information (DCI: Downlink Control Information).
  • the downlink control information includes uplink radio resource information (uplink grant (UL grant)) or downlink radio resource information (downlink grant (DL grant)) that can be used by the terminal device.
  • the downlink grant is information indicating scheduling of the physical downlink shared channel PDSCH.
  • the uplink grant is information indicating scheduling of the physical uplink shared channel PUSCH.
  • the physical uplink shared channel PUSCH is transmitted from the terminal device in order to notify the base station device of the uplink data (user data) and the uplink control data (RRC message).
  • the PUSCH can also include physical layer control signals such as downlink reception quality and ACK/NACK.
  • the terminal device transmits the PUSCH corresponding to the uplink grant included in the random access response, the PUSCH includes information (message 3) of the terminal device related to the random access.
  • FIG. 2 is a conceptual diagram showing an example of a conventional communication control process.
  • contents related to reducing the communication power of the terminal device for example, “A-MPR (Additional-Maximum Power Reduction)” are specified.
  • A-MPR Additional-Maximum Power Reduction
  • NS value Network Signaling Value
  • the NS value is transmitted by the ASE (Additional Spectrum Emission) of the SIB described above.
  • the NS value is, for example, 0 (NS_01) indicating that no special action is required, 1 (NS_100), 2 (NS_05), or 3 which is set according to the legislation of the country or region. (NS_05U) is included.
  • the terminal device conforming to the new version is the NS value (NS_XX). Can be recognized, so that the communication power of the terminal device conforming to the new version can be reduced.
  • the terminal device conforming to the old version can recognize the ASE conforming to the old version, but Unable to recognize the included NS value (NS_XX). Therefore, the terminal device conforming to the old version stops operating.
  • the information compliant with the old version is included in the information that the terminal device compliant with the old version can recognize. If the information that is not included is included, the terminal device conforming to the old version stops operating.
  • FIG. 3 is a conceptual diagram showing an example of communication control processing according to the embodiment of the present invention.
  • the control information for controlling the communication of the terminal device includes ASE (first information) conforming to the old version and ASE-compliant to the new version.
  • BC Backward Compatible
  • the ASE (first information) is configured to be recognized by both the terminal device conforming to the old version and the terminal device conforming to the new version, and the ASE-BC (second information) corresponds to the old version.
  • the terminal device is not recognized by the compliant terminal device and is recognized by the terminal device compliant with the new version.
  • the control information includes the ASE-BC in a form that is not recognized by the terminal device conforming to the old version. Therefore, it is possible to prevent the operation of the terminal device conforming to the old version from being stopped, and it is possible to appropriately execute the communication control of the terminal device conforming to the new version.
  • the communication control of the terminal device conforming to the new version includes, for example, control of suppressing the communication power of the terminal device conforming to the new version.
  • FIG. 4 is a schematic configuration diagram showing an example of the configuration of the base station device according to the embodiment of the present invention.
  • the base station device 2 is illustratively configured to include an information processing unit 21, a receiving unit 25, a transmitting unit 27, and a transmitting/receiving antenna unit 29.
  • the information processing unit 21 exemplarily includes a communication bandwidth designation unit 211 and a control information generation unit 213.
  • the information processing unit 21 generates information for controlling the reception unit 25 and the transmission unit 27, for example.
  • the information processing unit 21 performs processing related to, for example, a wireless resource control layer, a packet data integration protocol (Packet Data Convergence Protocol: PDCP) layer, a wireless link control (Radio Link Control: RLC) layer, and a medium access control layer. Execute.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • the communication bandwidth specifying unit 211 specifies the communication bandwidth used in the physical downlink and the physical uplink, for example.
  • the communication bandwidth designation unit 211 generates designation information regarding the communication bandwidth and outputs it to the transmission unit 27.
  • the control information generation unit 213 generates control information that controls communication of the terminal device 1.
  • the control information includes, for example, information for suppressing the communication power of the terminal device 1.
  • the receiving unit 25 separates, demodulates, and decodes various signals received from the terminal device 1 via the transmitting/receiving antenna unit 29, for example.
  • the receiving unit 25 outputs the decrypted information to the information processing unit 21.
  • the reception unit 25 may measure the state of the uplink channel from the received uplink signal and output the measurement result to the information processing unit 21, for example.
  • the transmitter 27 generates a downlink reference signal.
  • the transmission unit 27 transmits information to the terminal device 1 via the transmission/reception antenna unit 29 by encoding, modulating, multiplexing, etc., various information input from the information processing unit 21.
  • FIG. 5 is a schematic configuration diagram showing an example of the configuration of the terminal device according to the embodiment of the present invention.
  • the terminal device 1 exemplarily includes an information processing unit 11, a receiving unit 15, a transmitting unit 17, and a transmitting/receiving antenna unit 19.
  • the information processing unit 11 is illustratively configured to include a communication bandwidth determination unit 111 and a communication control unit 113.
  • the information processing unit 11 generates information for controlling the reception unit 15 and the transmission unit 17, for example.
  • the information processing unit 11 executes, for example, processing related to the radio resource control layer, the packet data integration protocol layer, the radio link control layer, and the medium access control layer.
  • the communication bandwidth determination unit 111 determines the communication bandwidth used in the communication of the terminal device 1 based on, for example, the designation information regarding the communication bandwidth generated by the communication bandwidth designation unit 211 shown in FIG.
  • the communication control unit 113 controls the communication of the terminal device 1 based on the control information generated by the control information generation unit 213 shown in FIG. 4, for example.
  • the communication control unit 113 suppresses the communication power of the terminal device 1, for example.
  • the receiving unit 15 separates, demodulates, and decodes various information received from the base station device 2 via the transmitting/receiving antenna unit 19.
  • the receiving unit 15 transfers the decrypted information to the information processing unit 11.
  • the transmitting unit 17 generates a physical uplink signal and encodes and modulates the physical uplink signal input from the processing unit 11.
  • the transmission unit 17 multiplexes various signals and transmits them to the base station device 2 via the transmission/reception antenna unit 19.
  • FIG. 6 is a flowchart showing an example of communication control processing according to the embodiment of the present invention.
  • Step S1 The terminal device 1 receives the synchronization signal from the base station device 2. Further, the terminal device 1 receives the cell ID from the base station device 2. Further, the terminal device 1 executes the measurement of the radio field intensity (for example, RSRP, RSSI, etc.) by receiving the reference signal from the base station device 2 with respect to the cell that can be synchronized based on the synchronization signal. To do.
  • the radio field intensity for example, RSRP, RSSI, etc.
  • the terminal device 1 determines, for example, the cell of the base station having the highest radio field intensity based on the measured radio field intensity. In addition, the terminal device 1 may determine the communication bandwidth of at least one of the uplink and the downlink based on the information included in the SIB or the MIB notified by the physical broadcast channel PBCH from the base station device 2.
  • the terminal device 1 receives the control information from the base station device 2.
  • the control information may be transmitted as notification information transmitted to one or more unspecified terminal devices 1. Further, the control information may be transmitted as individual information associated with each of the one or a plurality of terminal devices 1. With this configuration, it is possible to increase the degree of freedom regarding the setting of the control information transmission mode.
  • the notification information may be composed of a physical layer code.
  • Step S4 The terminal device 1 executes communication control such as limiting the communication power of the terminal device 1 based on the received control information.
  • the control information for controlling the communication of the terminal device includes the ASE (first information) conforming to the old version and the ASE-BC (second information) conforming to the new version. .. ASE is configured to be recognized by both the terminal device conforming to the old version and the terminal device conforming to the new version, and ASE-BC is not recognized by the terminal device conforming to the old version, and It is configured to be recognized by the terminal device conforming to the version.
  • the NS value conforming to the new version is stored in the ASE-BC conforming to the new version. Therefore, the control information includes the ASE-BC in a form that is not recognized by the terminal device conforming to the old version. Therefore, the operation of the terminal device conforming to the old version can be prevented from stopping, and the communication control of the terminal device conforming to the new version can be appropriately executed.
  • FIG. 7 is a diagram showing an example of the hardware configuration of the computer according to the embodiment of the present invention. Referring to FIG. 7, it can be used as the terminal device 1, the base station device 2, or the core device 4 shown in FIG. 1, or can be used to configure the terminal device 1, the base station device 2, or the core device 4. An example of the hardware configuration of the computer will be described.
  • the computer 40 mainly includes, as hardware resources, a processor 41, a main recording device 42, an auxiliary recording device 43, an input/output interface 44, and a communication interface 45. These are connected to each other via a bus line 46 including an address bus, a data bus, a control bus and the like. An interface circuit (not shown) may be interposed between the bus line 46 and each hardware resource.
  • the processor 41 controls the entire computer.
  • the main storage device 42 provides a work area to the processor 41, and is a volatile memory such as SRAM (Static Random Access Memory) and DRAM (Dynamic Random Access Memory).
  • the auxiliary storage device 43 is a non-volatile memory such as an HDD, an SSD, or a flash memory, which stores programs such as software and data. The program, data, etc. are loaded from the auxiliary recording device 43 to the main recording device 42 via the bus line 46 at any time.
  • the input/output interface 44 performs one or both of presenting information and receiving information input, and includes, for example, a digital camera, a keyboard, a mouse, a display, a touch panel display, a microphone, a speaker, and a temperature sensor.
  • the communication interface 45 is connected to a network (not shown) and transmits/receives data via the network.
  • the communication interface 45 and the network can be connected by wire or wirelessly.
  • the communication interface 45 may also acquire information on the network, for example, information on the access point, information on the base station device of the communication carrier, and the like.
  • the computer 40 can function as a desired means, perform a desired step, and realize a desired function by the cooperation of the hardware resources and the software exemplified above. ..
  • the “base station device” is not limited to a so-called base station and may include other devices that generate control information for controlling the terminal device and provide the control information to the terminal device, as described above.
  • the present invention it is possible to prevent the operation of the terminal device conforming to the first version from being stopped, and to appropriately execute the communication control of the terminal device conforming to the second version. It is possible to provide a terminal device, a base station device, and a wireless communication method capable of performing the same.

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

Abstract

L'invention concerne un dispositif de station de base permettant d'exécuter une communication sans fil avec un dispositif terminal, comprenant une unité de génération d'informations de commande pour générer des informations de commande destinées à commander la communication du dispositif terminal, et une unité de transmission pour transmettre les informations de commande au dispositif terminal. Les informations de commande comprennent des premières informations conformes à une première version et des secondes informations conformes à une seconde version qui est différente de la première version, les premières informations étant constituées de manière à être reconnues par un premier dispositif terminal conforme à la première version et un second dispositif terminal conforme à la seconde version, les secondes informations étant constituées de manière à ne pas être reconnues par le premier dispositif terminal et reconnues par le second dispositif terminal. Ainsi, il est possible d'empêcher le fonctionnement du dispositif terminal conforme à la première version d'arrêter et d'exécuter de manière appropriée la commande de communication du dispositif terminal conforme à la seconde version.
PCT/JP2019/005435 2019-02-14 2019-02-14 Dispositif terminal, dispositif de station de base et procédé de communication sans fil WO2020166031A1 (fr)

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US11330407B2 (en) * 2017-05-25 2022-05-10 Fujitsu Limited Base station device, terminal device, wireless communication system, and radio resource information notification method

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JP2017085531A (ja) * 2015-08-27 2017-05-18 株式会社Ｎｔｔドコモ ユーザ装置、移動通信システム、及びセル選択方法

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11330407B2 (en) * 2017-05-25 2022-05-10 Fujitsu Limited Base station device, terminal device, wireless communication system, and radio resource information notification method

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