WO2020075721A1 - ユーザ装置及び基地局装置 - Google Patents
ユーザ装置及び基地局装置 Download PDFInfo
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- WO2020075721A1 WO2020075721A1 PCT/JP2019/039686 JP2019039686W WO2020075721A1 WO 2020075721 A1 WO2020075721 A1 WO 2020075721A1 JP 2019039686 W JP2019039686 W JP 2019039686W WO 2020075721 A1 WO2020075721 A1 WO 2020075721A1
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- base station
- inactivity timer
- data inactivity
- mac
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/25—Maintenance of established connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/19—Connection re-establishment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present invention relates to a user device and a base station device in a wireless communication system.
- 5G Fifth Generation Partnership Project
- NR New Radio
- E-UTRA-NR dual connectivity hereinafter, also referred to as “EN-DC”
- MR-DC Multi Radio Access Technology
- the present invention has been made in view of the above points, and it is an object of the present invention to appropriately monitor a communication state in a communication to which dual connectivity is applied.
- a dual communication is applied to perform a first communication with a first base station apparatus and a second communication section with a second base station apparatus, and the first communication. And when a transmission or reception occurs in any of the second communication, both the MAC (Media Access Control) entity relating to the first communication and the MAC entity relating to the second communication cause a data inactivity timer. And a control unit for starting or restarting the device.
- MAC Media Access Control
- FIG. 2 is a diagram illustrating an example of a functional configuration of a base station device 10 according to an embodiment of the present invention.
- FIG. 2 is a diagram illustrating an example of a functional configuration of a user device 20 according to the embodiment of the present invention. It is a figure which shows an example of the hardware constitutions of the base station apparatus 10 or the user apparatus 20 in embodiment of this invention.
- LTE Long Term Evolution
- NR NR-Advanced
- LAN Local Area Network
- the duplex system may be a TDD (Time Division Duplex) system, an FDD (Frequency Division Duplex) system, or any other system (for example, Flexible Duplex). May be used.
- TDD Time Division Duplex
- FDD Frequency Division Duplex
- Flexible Duplex any other system (for example, Flexible Duplex). May be used.
- the “configure” of the wireless parameter or the like may mean that a predetermined value is set in advance (Pre-configure), or the base station apparatus 10 Alternatively, a wireless parameter notified from the user device 20 may be set.
- FIG. 1 is a diagram for explaining a mismatch of RRC states.
- the user apparatus or UE (User Equipment) 20 when the user apparatus or UE (User Equipment) 20 has an RRC state of “RRC Connected” in both the base station apparatus or eNB 10, it receives a call release instruction “RRC Connection Release” from the eNB 10. If it fails, the eNB 10 transits to “RRC Idle” and the UE 20 maintains “RRC Connected”, resulting in a mismatch of RRC states between the eNB 10 and the UE 20.
- the RRC state is “RRC Idle” in the eNB 10 and “RRC Connected” in the UE 20, even if the eNB 10 transmits the Paging to the UE 20, the UE 20 does not receive the Paging. Therefore, an event occurs in which an incoming call to the UE 20 cannot be communicated. It is specified that the RRC state in which the UE receives the paging from the eNB 10 is “RRC Idle” only.
- FIG. 2 is a diagram for explaining the operation of resolving the mismatch of RRC states.
- the “Data Inactivity Monitoring” function is introduced to eliminate the inconsistency in RRC state.
- the eNB 10 sets “Data Inactivity Timer” to the UE 20 in “RRC Connected”.
- the UE 20 measures the DL (Downlink) or UL (Uplink) non-communication period by the "Data Inactivity Timer”.
- the “Data Inactivity Timer” expires, the UE 20 autonomously transits to the “RRC Idle” state.
- the UE 20 will “RRC Idle” when the “Data Inactivity Timer” has expired. Transition to the state. That is, by transitioning to the “RRC Idle” state in both the eNB 10 and the UE 20, the RRC states of the eNB 10 and the UE 20 can be matched.
- the MAC (Media Access Control) entity received the MAC SDU (Service data unit) of the DTCH (Dedicated Traffic Channel) logical channel, the DCCH (Dedicated Control Channel) logical channel, or the CCCH (Common Control Channel) logical channel.
- DTCH Dedicated Traffic Channel
- DCCH Dedicated Control Channel
- CCCH Common Control Channel
- FIG. 3 is a diagram showing an example of a wireless communication system according to the embodiment of the present invention.
- FIG. 3 is a schematic diagram showing a wireless communication system at the time of EN-DC.
- the UE 20 which is a user device, includes a base station device 10A provided by the LTE system and a base station device 10B provided by the NR system (hereinafter, the base station device 10A and the base station device 10B are distinguished from each other. Otherwise, it may be referred to as "base station device 10").
- the user equipment 20 uses the base station apparatus 10A as a master node (hereinafter also referred to as “MN”) and the base station apparatus 10B as a secondary node (hereinafter also referred to as “SN”) LTE-NR dual connectivity, That is, it supports EN-DC.
- MN master node
- SN secondary node
- the user apparatus 20 simultaneously uses a plurality of component carriers provided by the base station apparatus 10A that is the master node and the base station apparatus 10B that is the secondary node, and the base station apparatus 10A that is the master node and the base that is the secondary node. It is possible to perform simultaneous transmission or simultaneous reception with the station device 10B.
- the LTE system and the NR system each have only one base station. However, generally, a large number of base station devices 10 that cover the service areas of the LTE system and the NR system are arranged.
- the dual connectivity of the wireless communication system according to the embodiment of the present invention is not limited to LTE-NR dual connectivity, and different RATs are used. It may be dual connectivity between a plurality of wireless communication systems, that is, MR-DC (Multi-RAT Dual Connectivity). Further, the dual connectivity of the wireless communication system in the embodiment of the present invention may be NE-DC (NR-E-UTRA Dual Connectivity), or both the base station device 10A and the base station device 10B are LTE systems. It may be a certain dual connectivity, or may be a dual connectivity in which both the base station device 10A and the base station device 10B are NR systems.
- FIG. 4 is a diagram for explaining an operation example of the wireless communication system.
- each MAC entity has a “Data Inactivity Monitoring” function. Therefore, as shown in FIG. 4, when the UE 20 is performing communication with dual connectivity with the MN 10A and the SN 10B, even if the SCG is communicating with the MN 10A forming the MCG (Master Cell Group). If the non-communication with the SN10B that constitutes the (Secondary Cell Group) continues, the Data Inactivity Timer related to the SCG MAC entity expires, and the SRC RRC state transitions to "RRC Idle". On the other hand, since the RRC state of the MCG is "RRC Connected", a mismatch occurs between the RCG states of the MCG and SCG.
- the "Data Inactivity Monitoring” function is not executed in the MAC entity unit during dual connectivity, but the “Data Inactivity Monitoring” function is executed in 20 user device units. That is, when the transmission or reception of the MAC SDU occurs in any one of the multiple MAC entities, the “Data Inactivity Timer” may be started or restarted in all the MAC entities. Reception of MAC SDU is reception on a DTCH logical channel, DCCH logical channel or CCCH logical channel, and transmission of MAC PDU is transmission on a DTCH logical channel or DCCH logical channel.
- the user device 20 does not actually transmit wirelessly, but “transmits” the PDU (Protocol Data Unit) or SDU created before the actual transmission timing, that is, the transmission. May or may not be considered to have occurred. Further, when the “Data Inactivity Timer” has expired in any of the MAC entities, the MAC entity may notify the upper layer of the expiration of the “Data Inactivity Timer”.
- PDU Protocol Data Unit
- SDU Serial Data Unit
- FIG. 5 is a flowchart for explaining a monitoring operation example (1) in the embodiment of the present invention.
- FIG. 5 shows an operation example related to the “Data Inactivity Monitoring” function of the UE 20.
- step S11 the UE 20 performs monitoring for each MAC entity. Subsequently, the expiration of Data Inactivity Timer is detected in any of the MAC entities (S12). Then, from the MAC entity whose Data Inactivity Timer expiration has been detected, the expiration is notified to the other MAC entities and the flow ends (S13).
- FIG. 6 is a flowchart for explaining an operation example (2) of monitoring in the embodiment of the present invention.
- FIG. 6 shows an operation example related to the “Data Inactivity Monitoring” function of the UE 20.
- step S21 the UE 20 performs monitoring for each MAC entity. Subsequently, the expiration of the Data Inactivity Timer is detected in any of the MAC entities (S22). Subsequently, the UE 20 determines whether the cell group of MAC entity in which the expiration of the Data Inactivity Timer is detected is MCG or SCG (S23). If it is MCG, the process proceeds to step S24, and if it is SCG, the process proceeds to step S25.
- step S24 the UE 20 autonomously transits to the “RRC Idle” state and ends the flow.
- step S25 the UE 20 transmits “SCG Failure” to the network and ends the flow.
- SCG Failure indicates that a wireless link failure has occurred in SCG.
- the “SCG Failure” may be transmitted from the UE 20 to the MN.
- FIG. 7 is a sequence diagram for explaining an operation example related to monitoring in the embodiment of the present invention.
- the eNB 10 illustrated in FIG. 7 is an example when the system is LTE.
- eNB10 may be replaced by gNB10.
- the UE 20 transmits a “UE capability report” to the eNB 10.
- the “UE capability report” includes information indicating the capability related to the “Data Inactivity Monitoring” function.
- the information indicating the capability related to the “Data Inactivity Monitoring” function may include, for example, information indicating whether or not the “Data Inactivity Monitoring” function is supported at the time of dual connectivity. Information indicating whether to support the "Data Inactivity Monitoring” function may be included.
- Each cell group is, for example, MCG or SCG.
- step S32 the eNB 10 transmits “Data Inactivity Timer setting” to the UE 20.
- “Data Inactivity Timer setting” may include information that specifies the MAC entity for monitoring.
- the “Data Inactivity Timer setting” for example, only the MAC entity of MCG may be designated, only the MAC entity of SCG may be designated, or both the MCG and SCG MAC entity may be designated.
- the "Data Inactivity Timer setting" may include information that specifies the necessity of monitoring for each cell group.
- step S31 and step S32 may be executed individually and independently, or the order of execution may be reversed.
- the user device 20 resets the Data Inactivity Timer by all the MAC entities when data is transmitted / received by any of the MAC entities in the communication to which the dual connectivity is applied. It is possible to prevent the RRC states from becoming inconsistent with each other.
- the communication status can be appropriately monitored.
- the base station device 10 and the user device 20 include a function for implementing the above-described embodiment. However, each of the base station device 10 and the user device 20 may include only some of the functions in the embodiment.
- FIG. 8 is a diagram showing an example of a functional configuration of the base station device 10. As illustrated in FIG. 8, the base station device 10 includes a transmission unit 110, a reception unit 120, a setting unit 130, and a control unit 140.
- the functional configuration shown in FIG. 8 is merely an example.
- the names of the functional divisions and functional units may be any names as long as the operations according to the embodiments of the present invention can be performed.
- the transmission unit 110 has a function of generating a signal to be transmitted to the user device 20 and transmitting the signal wirelessly.
- the receiving unit 120 includes a function of receiving various signals transmitted from the user device 20 and acquiring, for example, information of a higher layer from the received signals.
- the transmitting unit 110 has a function of transmitting an NR-PSS, an NR-SSS, an NR-PBCH, a DL / UL control signal, a DL reference signal, and the like to the user device 20.
- the setting unit 130 stores in the storage device the setting information set in advance and various setting information to be transmitted to the user device 20, and reads out the setting information from the storage device as needed.
- the content of the setting information is, for example, information related to the setting of the communication to which the dual connectivity is applied.
- control unit 140 performs the process related to the setting for the user device 20 to perform the communication to which the dual connectivity is applied.
- the control unit 140 transmits the scheduling of the communication to which the dual connectivity is applied to the user device 20 via the transmission unit 110.
- a function unit related to signal transmission in control unit 140 may be included in transmitting unit 110, and a function unit related to signal reception in control unit 140 may be included in receiving unit 120.
- FIG. 9 is a diagram illustrating an example of a functional configuration of the user device 20.
- the user device 20 includes a transmission unit 210, a reception unit 220, a setting unit 230, and a control unit 240.
- the functional configuration shown in FIG. 9 is merely an example.
- the names of the functional divisions and functional units may be any names as long as the operations according to the embodiments of the present invention can be performed.
- the transmitter 210 generates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
- the receiving unit 220 wirelessly receives various signals and acquires signals of higher layers from the received physical layer signals.
- the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, a DL / UL / SL control signal, a reference signal, and the like transmitted from the base station device 10.
- the setting unit 230 stores various setting information received from the base station device 10 or the user device 20 by the receiving unit 220 in a storage device, and reads from the storage device as necessary.
- the setting unit 230 also stores preset setting information.
- the content of the setting information is, for example, information related to the setting of the communication to which the dual connectivity is applied.
- the control unit 240 controls the communication to which the dual connectivity is applied, as described in the embodiment. In addition, the control unit 240 controls monitoring for detecting data inactivation of communication to which dual connectivity is applied.
- a function unit related to signal transmission in control unit 240 may be included in transmission unit 210, and a function unit related to signal reception in control unit 240 may be included in reception unit 220.
- each functional block may be realized using one device physically or logically coupled, or directly or indirectly (for example, two or more devices physically or logically separated from each other). , Wired, wireless, etc.), and may be implemented using these multiple devices.
- the functional block may be realized by combining one device or the plurality of devices with software.
- Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, deemed, Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, but not limited to these I can't.
- a functional block (configuration unit) that causes transmission to function is called a transmitting unit (transmitting unit) or a transmitter (transmitter).
- the realization method is not particularly limited.
- the base station device 10, the user device 20, and the like may function as a computer that performs processing of the wireless communication method according to the present disclosure.
- FIG. 10 is a diagram illustrating an example of a hardware configuration of the base station device 10 and the user device 20 according to the embodiment of the present disclosure.
- the above-described base station device 10 and user device 20 are physically configured as computer devices including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. May be done.
- the term “apparatus” can be read as a circuit, a device, a unit, or the like.
- the hardware configurations of the base station device 10 and the user device 20 may be configured to include one or more of the devices illustrated in the drawing, or may be configured without including some devices.
- the functions of the base station device 10 and the user device 20 are performed by reading predetermined software (program) on hardware such as the processor 1001 and the storage device 1002 so that the processor 1001 performs an arithmetic operation and the communication by the communication device 1004 is performed. This is realized by controlling, or controlling at least one of reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.
- the processor 1001 controls the entire computer by operating an operating system, for example.
- the processor 1001 may be configured by a central processing unit (CPU: Central Processing Unit) including an interface with a peripheral device, a control device, an arithmetic device, a register, and the like.
- CPU Central Processing Unit
- the control unit 140 and the control unit 240 described above may be realized by the processor 1001.
- the processor 1001 reads a program (program code), software module, data, or the like from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and executes various processes according to these.
- a program program that causes a computer to execute at least a part of the operation described in the above embodiment is used.
- the control unit 140 of the base station device 10 illustrated in FIG. 8 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
- the control unit 240 of the user device 20 shown in FIG. 9 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
- Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via a telecommunication line.
- the storage device 1002 is a computer-readable recording medium, and includes, for example, at least one of a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), and a RAM (Random Access Memory). It may be configured.
- the storage device 1002 may be called a register, a cache, a main memory (main storage device), or the like.
- the storage device 1002 can store a program (program code), a software module, and the like that can be executed to execute the communication method according to an embodiment of the present disclosure.
- the auxiliary storage device 1003 is a computer-readable recording medium, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, Blu -Ray (registered trademark) disk), smart card, flash memory (eg, card, stick, key drive), floppy (registered trademark) disk, magnetic strip, or the like.
- the storage medium described above may be, for example, a database including at least one of the storage device 1002 and the auxiliary storage device 1003, a server, or another appropriate medium.
- the communication device 1004 is hardware (transmission / reception device) for performing communication 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 a high-frequency switch, a duplexer, a filter, a frequency synthesizer, and the like, for example, in order to realize at least one of frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex). May be configured.
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- a transmitting / receiving antenna, an amplifier unit, a transmitting / receiving unit, a transmission line interface, and the like may be realized by the communication device 1004.
- the transmission / reception unit may be physically or logically separated from the transmission unit and the reception unit.
- the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, and the like) that receives an external input.
- the output device 1006 is an output device (for example, a display, a speaker, an LED lamp, and the like) that performs output to the outside. Note that the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
- the devices such as the processor 1001 and the storage device 1002 are connected by a bus 1007 for communicating information.
- the bus 1007 may be configured using a single bus, or may be configured using a different bus for each device.
- the base station device 10 and the user device 20 include a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), an FPGA (Field Programmable Gate Array), and the like. It may be configured to include hardware, and the hardware may implement part or all of each functional block. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.
- DSP Digital Signal Processor
- ASIC Application Specific Integrated Circuit
- PLD Programmable Logic Device
- FPGA Field Programmable Gate Array
- the dual connectivity is applied to perform the first communication with the first base station apparatus and the second communication with the second base station apparatus.
- the MAC Media Access Control
- the user device 20 resets the Data Inactivity Timer in all the MAC entities when data is transmitted / received in any of the MAC entities, so that the MAC in between the MAC entities. It is possible to prevent the RRC states from becoming inconsistent. That is, in the communication to which the dual connectivity is applied, the communication state can be appropriately monitored.
- the user device 20 can perform processing with a certain MAC entity triggered by the expiration of the Data Inactivity Timer detected in the other MAC entity.
- the RRC (Radio Resource Control) state may be transited to RRC Idle.
- the user device 20 can transition to the RRC Idle state when the communication related to the MN is stopped.
- an SCG (Secondary Cell Group) Failure may be transmitted to the first base station device.
- the user equipment 20 can report the SCG Failure to the MN when the radio link failure occurs in the SCG.
- the communication unit may send information indicating whether to support monitoring using a data inactivity timer to the network when applying dual connectivity.
- the user device 20 can report whether or not the base station device 10 has a Data Inactivity Monitoring function.
- the dual connectivity in the communication unit that communicates with the user device, in any of a plurality of MAC (Media Access Control) entity related to the communication to which the dual connectivity is applied.
- the user device 20 resets the Data Inactivity Timer in all the MAC entities when data is transmitted / received in any of the MAC entities, so that the MAC in between the MAC entities. It is possible to prevent the RRC states from becoming inconsistent. That is, in the communication to which the dual connectivity is applied, the communication state can be appropriately monitored.
- the operation of a plurality of functional units may be physically performed by one component, or the operation of one functional unit may be physically performed by a plurality of components.
- the order of the processing may be changed as long as there is no contradiction.
- the base station device 10 and the user device 20 have been described using a functional block diagram for convenience of description of the process, such a device may be realized by hardware, software, or a combination thereof.
- the software operated by the processor of the base station apparatus 10 according to the embodiment of the present invention and the software operated by the processor of the user apparatus 20 according to the embodiment of the present invention are a random access memory (RAM), a flash memory, and a read memory, respectively.
- the data may be stored in a dedicated memory (ROM), an EPROM, an EEPROM, a register, a hard disk (HDD), a removable disk, a CD-ROM, a database, a server, or any other suitable storage medium.
- notification of information is not limited to the aspect / embodiment described in the present disclosure, and may be performed using another method.
- information is notified by physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, It may be implemented by broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof, and RRC signaling may be called an RRC message, for example, RRC message. It may be a connection setup (RRC Connection Setup) message, an RRC connection reconfiguration message, or the like.
- LTE Long Term Evolution
- LTE-A Long Term Evolution-Advanced
- SUPER 3G IMT-Advanced
- 4G 4th generation mobile communication system
- 5G 5th generation mobile communication
- FRA Full Radio Access
- NR new Radio
- W-CDMA registered trademark
- GSM registered trademark
- CDMA2000 Code Division Multiple Access 2000
- UMB Universal Mobile Broadband
- IEEE 802.11 Wi-Fi (registered trademark)
- Systems using IEEE@802.16 WiMAX®
- IEEE@802.20 UWB (Ultra-WideBand
- Bluetooth® and other suitable systems and extensions based thereon. It may be applied to at least one of the next generation systems.
- a plurality of systems may be combined (for example, a combination of at least one of LTE and LTE-A with 5G) and applied.
- the specific operation that is performed by the base station device 10 in this specification may be performed by its upper node in some cases.
- a network including one or a plurality of network nodes (network @ nodes) having the base station device 10 various operations performed for communication with the user device 20 are performed by the base station device 10 and other operations other than the base station device 10. It is clear that this can be done by at least one of the following network nodes (for example, but not limited to MME or S-GW, etc.).
- MME Mobility Management Entity
- S-GW Serving Mobility Management Entity
- ⁇ Information, signals, and the like described in the present disclosure can be output from an upper layer (or lower layer) to a lower layer (or upper layer). Input and output may be performed via a plurality of network nodes.
- the input and output information may be stored in a specific place (for example, a memory) or may be managed using a management table. Information that is input and output can be overwritten, updated, or added. The output information or the like may be deleted. The input information or the like may be transmitted to another device.
- the determination in the present disclosure may be performed by a value represented by 1 bit (0 or 1), may be performed by a Boolean value (Boolean: true or false), or may be compared by numerical values (for example, , Comparison with a predetermined value).
- software, instructions, information, and the like may be transmitted and received via a transmission medium.
- a transmission medium For example, if 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.), the website, When transmitted from a server or other remote source, at least one of these wired and / or wireless technologies is included within the definition of a transmission medium.
- the information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies.
- data, instructions, commands, information, signals, bits, symbols, chips, etc. that can be referred to throughout the above description are not limited to voltages, currents, electromagnetic waves, magnetic or magnetic particles, optical or photons, or any of these. May be represented by a combination of
- At least one of the channel and the symbol may be a signal (signaling).
- the signal may also be a message.
- a component carrier (CC: Component @ Carrier) may be called a carrier frequency, a cell, a frequency carrier, or the like.
- system and “network” used in this disclosure are used interchangeably.
- the information, parameters, and the like described in the present disclosure may be expressed using an absolute value, may be expressed using a relative value from a predetermined value, or may be expressed using another corresponding information. May be represented.
- the radio resource may be indicated by an index.
- base station (BS: Base @ Station)”, “wireless base station”, “base station device”, “fixed station (fixed @ station)”, “NodeB”, “eNodeB (eNB)”, “gNodeB” (GNB) ",” access point (access @ point) “,” transmission point (transmission @ point) “,” reception point (reception @ point) “,” transmission / reception point (transmission / reception @ point) “,” cell “,” sector “, Terms such as “cell group”, “carrier”, “component carrier” may be used interchangeably.
- a base station may also be referred to as a macro cell, a small cell, a femto cell, a pico cell, or the like.
- a base station can accommodate one or more (eg, three) cells. If the base station accommodates multiple cells, the entire coverage area of the base station can be partitioned into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (RRH: The communication service can also be provided by Remote @ Radio @ Head.
- RRH small indoor base station
- the communication service can also be provided by Remote @ Radio @ Head.
- Cell or “sector” is a part or the whole of the coverage area of at least one of the base station and the base station subsystem that provides the communication service in this coverage. Point to.
- MS mobile station
- UE user equipment
- terminal terminal
- Mobile stations are defined by those skilled in the art as 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. 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 unit, the mobile unit itself, or the like.
- the moving object may be a vehicle (for example, a car, an airplane, or the like), may be an unmanned moving object (for example, a drone, an autonomous vehicle), or may be a robot (maned or unmanned). ).
- at least one of the base station and the mobile station includes a device that does not necessarily move during a communication operation.
- at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.
- IoT Internet of Things
- the base station in the present disclosure may be replaced by the user terminal.
- communication between a base station and a user terminal is replaced with communication between a plurality of user devices 20 (for example, it may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.).
- D2D Device-to-Device
- V2X Vehicle-to-Everything
- Each aspect / embodiment of the present disclosure may be applied to the configuration described above.
- the configuration may be such that the user device 20 has the function of the base station device 10 described above.
- words such as “up” and “down” may be read as words corresponding to communication between terminals (for example, “side”).
- the uplink channel and the downlink channel may be replaced with the side channel.
- a user terminal in the present disclosure may be replaced by a base station.
- the configuration may be such that the base station has the function of the user terminal described above.
- determining may encompass a wide variety of operations.
- “Judgment” and “decision” are, for example, judgment, calculation, computing, processing, processing, deriving, investigating, and looking up, search, inquiry. (Eg, searching in a table, database, or another data structure), ascertaining to be regarded as “judgment” and “decision” may be included.
- “decision” and “decision” include receiving (eg, receiving information), transmitting (eg, transmitting information), input (input), output (output), access (accessing) (for example, accessing data in a memory) may be regarded as “judging” and “deciding”.
- ⁇ judgment '' and ⁇ decision '' means that resolving, selecting, selecting, establishing, establishing, comparing, etc. are regarded as ⁇ judgment '' and ⁇ decided ''. May be included.
- “judgment” and “decision” may include deeming any operation as “judgment” and “determined”. “Judgment (determination)” may be read as “assuming”, “expecting”, “considering”, or the like.
- connection means any direct or indirect connection or connection between two or more elements that It may include the presence of one or more intermediate elements between the two elements “connected” or “coupled.”
- the coupling or connection between the elements may be physical, logical, or a combination thereof.
- connection may be read as “access”.
- two elements may be implemented using at least one of one or more wires, cables, and printed electrical connections, and as some non-limiting and non-exhaustive examples, in the radio frequency domain. , Can be considered “connected” or “coupled” to each other using electromagnetic energy having wavelengths in the microwave and optical (both visible and invisible) regions, and the like.
- the reference signal may be abbreviated as RS (Reference Signal), and may be referred to as a pilot depending on an applied standard.
- RS Reference Signal
- references to elements using the designations “first,” “second,” etc. as used in this disclosure does not generally limit the amount or order of those elements. These designations may be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, references to first and second elements do not mean that only two elements can be employed, or that the first element must precede the second element in some way.
- a radio frame may be composed of one or more frames in the time domain. Each frame or frames in the time domain may be referred to as a subframe. A subframe may be further configured by one or more slots in the time domain. The subframe may be a fixed time length (eg, 1 ms) that does not depend on numerology.
- Numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel.
- Numerology includes, for example, a subcarrier interval (SCS: SubCarrier @ Spacing), a bandwidth, a symbol length, a cyclic prefix length, a transmission time interval (TTI: Transmission @ Time @ Interval), a number of symbols per TTI, a radio frame configuration, and a transceiver.
- SCS SubCarrier @ Spacing
- TTI Transmission @ Time @ Interval
- TTI Transmission @ Time @ Interval
- a number of symbols per TTI a radio frame configuration
- transceiver At least one of a specific filtering process performed in a frequency domain and a specific windowing process performed by a transceiver in a time domain may be indicated.
- the slot may be configured with one or a plurality of symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.) in the time domain.
- a slot may be a time unit based on numerology.
- a slot may include multiple minislots. Each minislot may be constituted by one or more symbols in the time domain. Also, the mini-slot may be called a sub-slot. Minislots may be configured with a smaller number of symbols than slots.
- a PDSCH (or PUSCH) transmitted in time units larger than minislots may be referred to as PDSCH (or PUSCH) mapping type A.
- a PDSCH (or PUSCH) transmitted using a minislot may be referred to as a PDSCH (or PUSCH) mapping type B.
- Radio frame, subframe, slot, minislot, and symbol all represent the time unit when transmitting a signal.
- the radio frame, the subframe, the slot, the minislot, and the symbol may have different names corresponding to each.
- one subframe may be called a transmission time interval (TTI: Transmission @ Time @ Interval)
- TTI Transmission @ Time @ Interval
- TTI Transmission Time interval
- a plurality of consecutive subframes may be called a TTI
- one slot or one minislot is called a TTI.
- You may. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in the existing LTE, a period shorter than 1 ms (for example, 1 to 13 symbols), or a period longer than 1 ms. It may be.
- the unit representing the TTI may be called a slot, a minislot, or the like instead of a subframe.
- the TTI refers to, for example, a minimum time unit of scheduling in wireless communication.
- the base station performs scheduling for allocating radio resources (frequency bandwidth, transmission power, and the like that can be used in each user device 20) to each user device 20 in TTI units.
- radio resources frequency bandwidth, transmission power, and the like that can be used in each user device 20
- 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 and link adaptation. Note that when a TTI is given, a time section (for example, the number of symbols) in which a transport block, a code block, a codeword, and the like are actually mapped may be shorter than the TTI.
- one slot or one minislot is called a TTI
- one or more TTIs may be the minimum time unit for scheduling. Further, the number of slots (mini-slot number) constituting the minimum time unit of the scheduling may be controlled.
- a TTI having a time length of 1 ms may be referred to as 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, and the like.
- a TTI shorter than the normal TTI may be called a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a minislot, a subslot, a slot, and the like.
- a long TTI (eg, normal TTI, subframe, etc.) may be read as a TTI having a time length exceeding 1 ms, and a short TTI (eg, shortened TTI, etc.) is 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 included in the RB may be the same regardless of the numerology, and may be, for example, 12.
- the number of subcarriers included in the RB may be determined based on numerology.
- the time domain of the RB may include one or more symbols, and may be one slot, one minislot, one subframe, or one TTI.
- One TTI, one subframe, and the like may each be configured with one or a plurality of resource blocks.
- one or more RBs include a physical resource block (PRB: Physical @ RB), a subcarrier group (SCG: Sub-Carrier @ Group), a resource element group (REG: Resource @ Element @ Group), a PRB pair, an RB pair, and the like. May be called.
- PRB Physical @ RB
- SCG Sub-Carrier @ Group
- REG Resource @ Element @ Group
- PRB pair an RB pair, and the like. May be called.
- a resource block may be composed of one or more resource elements (RE: Resource @ Element).
- RE Resource @ Element
- one RE may be a radio resource area of one subcarrier and one symbol.
- a ⁇ bandwidth part (which may be referred to as a partial bandwidth or the like) may represent a subset of consecutive common RBs (common resource blocks) for a certain numerology in a certain carrier.
- the common RB may be specified by an index of the RB based on the common reference point of the carrier.
- PRBs may be defined in a BWP and numbered within that BWP.
- $ BWP may include a BWP for UL (UL @ BWP) and a BWP for DL (DL @ BWP).
- BWP for a UE, one or more BWPs may be configured in one carrier.
- At least one of the configured BWPs may be active, and the UE does not have to assume to transmit and receive a given signal / channel outside the active BWP.
- “cell”, “carrier”, and the like in the present disclosure may be replaced with “BWP”.
- the structures of the above-described radio frames, subframes, slots, minislots, and symbols are merely examples.
- the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, included in an RB The configuration of the number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP: Cyclic @ Prefix) length, and the like can be variously changed.
- the term “A and B are different” may mean that “A and B are different from each other”.
- the term may mean that “A and B are different from C”.
- Terms such as “separate”, “coupled” and the like may be interpreted similarly to "different”.
- Each aspect / embodiment described in the present disclosure may be used alone, may be used in combination, or may be used by switching with execution. Further, the notification of the predetermined information (for example, the notification of “X”) is not limited to being explicitly performed, and is performed implicitly (for example, not performing the notification of the predetermined information). Is also good.
- the transmission unit 210 and the reception unit 220 are examples of the communication unit.
- the MN is an example of a first base station device.
- the SN is an example of the second base station device.
- Data Inactivity Timer is an example of a data inactivity timer.
- Base station device 110 transmitter 120 receiver 130 setting unit 140 controller 20 user equipment (UE) 210 transmitter 220 receiver 230 setting unit 240 controller 1001 processor 1002 storage device 1003 auxiliary storage device 1004 communication device 1005 input device 1006 output device
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Abstract
Description
次に、これまでに説明した処理及び動作を実行する基地局装置10及びユーザ装置20の機能構成例を説明する。基地局装置10及びユーザ装置20は上述した実施例を実施する機能を含む。ただし、基地局装置10及びユーザ装置20はそれぞれ、実施例の中の一部の機能のみを備えることとしてもよい。
図8は、基地局装置10の機能構成の一例を示す図である。図8に示されるように、基地局装置10は、送信部110と、受信部120と、設定部130と、制御部140とを有する。図8に示される機能構成は一例に過ぎない。本発明の実施の形態に係る動作を実行できるのであれば、機能区分及び機能部の名称はどのようなものでもよい。
図9は、ユーザ装置20の機能構成の一例を示す図である。図9に示されるように、ユーザ装置20は、送信部210と、受信部220と、設定部230と、制御部240とを有する。図9に示される機能構成は一例に過ぎない。本発明の実施の形態に係る動作を実行できるのであれば、機能区分及び機能部の名称はどのようなものでもよい。
上記実施形態の説明に用いたブロック図(図8及び図9)は、機能単位のブロックを示している。これらの機能ブロック(構成部)は、ハードウェア及びソフトウェアの少なくとも一方の任意の組み合わせによって実現される。また、各機能ブロックの実現方法は特に限定されない。すなわち、各機能ブロックは、物理的又は論理的に結合した1つの装置を用いて実現されてもよいし、物理的又は論理的に分離した2つ以上の装置を直接的又は間接的に(例えば、有線、無線などを用いて)接続し、これら複数の装置を用いて実現されてもよい。機能ブロックは、上記1つの装置又は上記複数の装置にソフトウェアを組み合わせて実現されてもよい。
以上、説明したように、本発明の実施の形態によれば、デュアルコネクティビティを適用して、第1の基地局装置と第1の通信を行い、第2の基地局装置と第2の通信を行う通信部と、前記第1の通信及び前記第2の通信のいずれかにおいて送信又は受信が発生した場合、前記第1の通信に係るMAC(Media Access Control)エンティティ及び前記第2の通信に係るMACエンティティの双方で、データ非活動タイマをスタート又は再スタートさせる制御部とを有するユーザ装置が提供される。
以上、本発明の実施の形態を説明してきたが、開示される発明はそのような実施形態に限定されず、当業者は様々な変形例、修正例、代替例、置換例等を理解するであろう。発明の理解を促すため具体的な数値例を用いて説明がなされたが、特に断りのない限り、それらの数値は単なる一例に過ぎず適切な如何なる値が使用されてもよい。上記の説明における項目の区分けは本発明に本質的ではなく、2以上の項目に記載された事項が必要に応じて組み合わせて使用されてよいし、ある項目に記載された事項が、別の項目に記載された事項に(矛盾しない限り)適用されてよい。機能ブロック図における機能部又は処理部の境界は必ずしも物理的な部品の境界に対応するとは限らない。複数の機能部の動作が物理的には1つの部品で行われてもよいし、あるいは1つの機能部の動作が物理的には複数の部品により行われてもよい。実施の形態で述べた処理手順については、矛盾の無い限り処理の順序を入れ替えてもよい。処理説明の便宜上、基地局装置10及びユーザ装置20は機能的なブロック図を用いて説明されたが、そのような装置はハードウェアで、ソフトウェアで又はそれらの組み合わせで実現されてもよい。本発明の実施の形態に従って基地局装置10が有するプロセッサにより動作するソフトウェア及び本発明の実施の形態に従ってユーザ装置20が有するプロセッサにより動作するソフトウェアはそれぞれ、ランダムアクセスメモリ(RAM)、フラッシュメモリ、読み取り専用メモリ(ROM)、EPROM、EEPROM、レジスタ、ハードディスク(HDD)、リムーバブルディスク、CD-ROM、データベース、サーバその他の適切な如何なる記憶媒体に保存されてもよい。
110 送信部
120 受信部
130 設定部
140 制御部
20 ユーザ装置(UE)
210 送信部
220 受信部
230 設定部
240 制御部
1001 プロセッサ
1002 記憶装置
1003 補助記憶装置
1004 通信装置
1005 入力装置
1006 出力装置
Claims (6)
- デュアルコネクティビティを適用して、第1の基地局装置と第1の通信を行い、第2の基地局装置と第2の通信を行う通信部と、
前記第1の通信及び前記第2の通信のいずれかにおいて送信又は受信が発生した場合、前記第1の通信に係るMAC(Media Access Control)エンティティ及び前記第2の通信に係るMACエンティティの双方で、データ非活動タイマをスタート又は再スタートさせる制御部とを有するユーザ装置。 - 前記第1の通信に係るMACエンティティ及び前記第2の通信に係るMACエンティティのいずれかにおいて前記データ非活動タイマの満了が検出された場合、前記データ非活動タイマの満了が検出されたMACエンティティから他方のMACエンティティに前記データ非活動タイマの満了検出を通知する請求項1記載のユーザ装置。
- 前記第1の通信に係るMACエンティティにおいて前記データ非活動タイマの満了が検出された場合、RRC(Radio Resource Control)状態をRRC Idleに遷移させる請求項1記載のユーザ装置。
- 前記第2の通信に係るMACエンティティにおいて前記データ非活動タイマの満了が検出された場合、前記第1の基地局装置にSCG(Secondary Cell Group) Failureを送信する請求項1記載のユーザ装置。
- 前記通信部は、デュアルコネクティビティ適用時にデータ非活動タイマを使用するモニタリングをサポートするか否かを示す情報をネットワークに送信する請求項1記載のユーザ装置。
- デュアルコネクティビティを適用して、ユーザ装置と通信を行う通信部と、
デュアルコネクティビティが適用された通信に係る複数のMAC(Media Access Control)エンティティのいずれにおいて、データ非活動タイマを使用するモニタリングを実行するかを示す情報を前記ユーザ装置に通知する制御部とを有する基地局装置。
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JP2023016940A (ja) | 2023-02-02 |
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JP7537837B2 (ja) | 2024-08-21 |
JPWO2020075721A1 (ja) | 2021-09-02 |
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EP3866557A4 (en) | 2022-07-06 |
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