WO2023073968A1 - 端末及び通信方法 - Google Patents
端末及び通信方法 Download PDFInfo
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- WO2023073968A1 WO2023073968A1 PCT/JP2021/040158 JP2021040158W WO2023073968A1 WO 2023073968 A1 WO2023073968 A1 WO 2023073968A1 JP 2021040158 W JP2021040158 W JP 2021040158W WO 2023073968 A1 WO2023073968 A1 WO 2023073968A1
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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
- H04W28/04—Error control
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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 terminal and communication method in a wireless communication system.
- NR New Radio
- LTE Long Term Evolution
- NTN Non-Terrestrial Network
- NTN uses non-terrestrial networks such as satellites to provide services to areas that cannot be covered by terrestrial 5G networks mainly due to cost (for example, Non-Patent Document 2 and Non-Patent Document 3).
- 3GPP TS 38.300 V16.6.0 (2021-06)
- 3GPP TR 38.821 V16.0.0 (2019-12) Konishi et al., "Study on Downlink Frequency Sharing in HAPS Mobile Communication Systems", The Institute of Electronics, Information and Communication Engineers General Conference, B-17-1, 2020 3GPP TS 38.214 V16.6.0 (2021-06)
- NTN Network
- TN Terrestrial Network
- LEO Low Earth orbit
- HAPS High Altitude Platform Station
- PDSCH Physical Downlink Shared Channel
- MBS Multicast and broadcast services
- the present invention has been made in view of the above points, and it is an object of the present invention to appropriately activate SPS (Semi-persistent scheduling) in a wireless communication system.
- SPS Semi-persistent scheduling
- control information for activating SPS (Semi-persistent scheduling)-PDSCH Physical Downlink Shared Channel
- NTN Non-Terrestrial Network or MBS (Multicast and broadcast services)
- MBS Multicast and broadcast services
- a receiving unit a control unit that determines an operation method related to feedback corresponding to the control information based on a first setting set by the base station; and a transmitter for transmitting to the base station.
- FIG. 10 is a diagram showing an example of receiving SPS PDSCH;
- FIG. 4 is a diagram showing an example of PTM transmission;
- 4 is a flow chart showing an example (1) of SPS activation according to the embodiment of the present invention;
- 4 is a flow chart showing an example (2) of SPS activation according to the embodiment of the present invention;
- FIG. 10 is a flow chart showing an example (3) of SPS activation in the embodiment of the present invention;
- FIG. 2 is a diagram showing an example of the functional configuration of terminal 20 according to the embodiment of the present invention
- FIG. 2 is a diagram showing an example of hardware configuration of base station 10 or terminal 20 according to an embodiment of the present invention
- FIG. It is a figure showing an example of composition of vehicles 2001 in an embodiment of the invention.
- LTE Long Term Evolution
- LTE-Advanced LTE-Advanced and subsequent systems (eg, NR) unless otherwise specified.
- SS Synchronization signal
- PSS Primary SS
- SSS Secondary SS
- PBCH Physical broadcast channel
- PRACH Physical random access channel
- PDCCH Physical Downlink Control Channel
- PDSCH Physical Downlink Shared Channel
- PUCCH Physical Uplink Control Channel
- PUSCH Physical Uplink Shared Channel
- NR corresponds to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, NR-PDCCH, NR-PDSCH, NR-PUCCH, NR-PUSCH, and the like.
- NR- even a signal used for NR is not necessarily specified as "NR-".
- the duplex system may be a TDD (Time Division Duplex) system, an FDD (Frequency Division Duplex) system, or other (for example, Flexible Duplex etc.) method may be used.
- TDD Time Division Duplex
- FDD Frequency Division Duplex
- "configuring" wireless parameters and the like may mean that predetermined values are preset (Pre-configure), and the base station 10 or A wireless parameter notified from the terminal 20 may be set.
- FIG. 1 is a diagram showing an example (1) of NTN.
- NTN Non-Terrestrial Network
- uses non-terrestrial devices such as satellites to provide services to areas that cannot be covered by terrestrial 5G networks mainly due to cost.
- NTN can provide more reliable services. For example, it is assumed to be applied to IoT (Inter of things), ships, buses, trains, and critical communications. NTN also has scalability through efficient multicast or broadcast.
- a satellite 10A retransmits a signal transmitted from a terrestrial base station 10B to provide service to an area where no terrestrial base station is deployed, such as mountainous areas. can be done.
- a terrestrial 5G network includes one or more base stations 10 and terminals 20 .
- the base station 10 is a communication device that provides one or more cells and wirelessly communicates with the terminal 20 .
- a physical resource of a radio signal is defined in the time domain and the frequency domain.
- the time domain may be defined by the number of OFDM symbols, and the frequency domain may be defined by the number of subcarriers or resource blocks.
- the base station 10 transmits synchronization signals and system information to the terminal 20 . Synchronization signals are, for example, NR-PSS and NR-SSS.
- the system information is transmitted by, for example, NR-PBCH, and is also called broadcast information.
- the base station 10 transmits control signals or data to the terminal 20 on DL (Downlink), and receives control signals or data from the terminal 20 on UL (Uplink). Both the base station 10 and the terminal 20 can perform beamforming to transmit and receive signals. Also, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Also, both the base station 10 and the terminal 20 may communicate via SCell (Secondary Cell) and PCell (Primary Cell) by CA (Carrier Aggregation).
- SCell Secondary Cell
- PCell Primary Cell
- the terminal 20 is a communication device with a wireless communication function, such as a smartphone, mobile phone, tablet, wearable terminal, or M2M (Machine-to-Machine) communication module.
- the terminal 20 receives a control signal or data from the base station 10 on the DL and transmits the control signal or data to the base station 10 on the UL, thereby using various communication services provided by the wireless communication system.
- FIG. 2 is a diagram showing an example (2) of NTN.
- the area per cell or beam in NTN is very large compared to terrestrial networks (Terrestrial Network, TN).
- FIG. 2 shows an example of an NTN composed of retransmissions by satellite.
- the connection between satellite 10A and NTN gateway 10B is called a feeder link, and the connection between satellite 10A and UE 20 is called a service link.
- the difference in delay between the near side UE 20A and the far side UE 20B is, for example, 10.3 ms for Geosynchronous orbit (GEO). , 3.2 ms in the case of LEO (Low Earth orbit).
- the beam size in NTN is, for example, 3500 km for GEO and 1000 km for LEO.
- FIG. 3 is a diagram showing an example (3) of NTN.
- NTN is implemented by satellites in space or air vehicles in the air.
- a GEO satellite may be a satellite located at an altitude of 35,786 km and having a geostationary orbit.
- a LEO satellite may be a satellite located at an altitude of 500-2000 km and orbiting with a period of 88-127 minutes.
- HAPS High Altitude Platform Station
- HAPS High Altitude Platform Station
- GEO satellites, LEO satellites and HAPS air vehicles may be connected to ground stations gNB via gateways. Also, the service area may increase in order of HAPS, LEO, and GEO.
- NTN can extend the coverage of 5G networks to unserviced or serviced areas. Also, for example, NTN can improve service continuity, availability and reliability on ships, buses, trains or other critical communications. Note that the NTN may be notified by transmitting a dedicated parameter to the terminal 20, and the dedicated parameter is, for example, based on information related to the satellite or the aircraft. Related to TA (Timing Advance) determination It may be a parameter.
- FIG. 4 is a diagram showing an example (4) of NTN.
- FIG. 4 shows an example of the NTN network architecture assumed for transparent payloads.
- CN Core Network
- gNB 10C Gateway 10B
- Gateway 10B is connected to satellite 10A via a feeder link.
- Satellite 10A is connected to terminal 20A or VSAT (Very small aperture terminal) 20B via a service link.
- NR Uu is established between gNB 10C and terminal 20A or VSAT 20B.
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- terrestrial cells may be fixed or mobile.
- Terminal 20 may also have GNSS (Global Navigation Satellite System) capability.
- FR1 may assume a power class 3 handheld device.
- a VSAT device may also be assumed, at least in FR2.
- NTN's network architecture may assume a regenerative payload.
- gNB functionality may be onboard a satellite or air vehicle.
- the gNB-DU may be mounted on a satellite or air vehicle, and the gNB-CU may be deployed as a ground station.
- HARQ feedback may be disabled. If HARQ feedback is disabled, two consecutive DL transport blocks can be sent in one HARQ process without waiting for feedback.
- FIG. 5 is a diagram illustrating an example of receiving the SPS PDSCH.
- the K1 value is the offset from the PDSCH to the PUCCH that transmits the corresponding HARQ-ACK.
- the activation DCI allocates initial PDSCH reception and signals activation of the SPS.
- a HARQ-ACK corresponding to the initial PDSCH reception is used to confirm successful activation.
- the SPS-PDSCH that follows the initial PDSCH is transmitted in a predetermined cycle without transmitting the corresponding PDCCH.
- the release DCI notifies that the SPS has been released without PDSCH allocation.
- a HARQ-ACK corresponding to the release DCI is used to confirm successful release.
- the HARQ process number corresponding to each PDSCH reception is determined based on higher layer parameters that define the slot index and the number of HARQ processes assigned to the SPS.
- the HARQ process ID may be calculated as follows.
- CURRENT_slot is [(SFN * numberOfSlotsPerFrame) + number of slots in frame], where numberOfSlotsPerFrame is the number of consecutive slots per frame.
- HARQ feedback corresponding to SPS release may always be performed regardless of whether feedback is enabled or disabled.
- the success or failure of receiving the activation command should be reported to the base station 10. If the activation command fails to be received and the failure is not reported to the base station 10 , many subsequent SPS-PDSCHs will not be received by the terminal 20 . On the other hand, when feedback is enabled to perform HARQ feedback corresponding to the initial SPS-PDSCH, all subsequent HARQ feedbacks of SPS-PDSCH are also enabled.
- MBS Multicast and broadcast services
- a group scheduling mechanism such as reporting HARQ feedback to the base station 10
- MBS may be applied for UEs in RRC_IDLE or RRC_INACTIVE state in addition to UEs in RRC_CONNECTED state.
- a UE in RRC_CONNECTED state may receive MBS simultaneously with unicast reception operations, or may improve reliability by performing UL feedback on MBS reception.
- the UE may be able to receive PTM (Point to Multipoint), or may be able to operate in the same manner as the UE operation in the RRC_CONNECTED state.
- PTM Point to Multipoint
- FIG. 6 is a diagram showing an example of PTM transmission.
- the group-common PDSCH is scheduled by the group-common PDCCH.
- CRC (Cyclic redundancy check) of group common PDCCH and PDSCH are scrambled by group common RNTI (Radio Network Temporary Identifier).
- group common RNTI Radio Network Temporary Identifier
- PTP Point to Point
- RAN nodes deliver separate copies of MBS data packets to individual UEs.
- the UE-specific PDCCH is used to schedule the UE-specific PDSCH for UEs in RRC_CONNECTED state.
- CRC of PDCCH and PDSCH are scrambled by UE-specific RNTI. That is, MBS packets are transmitted by unicast transmission.
- ACK/NACK feedback may be supported.
- a terminal 20 that successfully receives and decodes may transmit an ACK.
- a terminal 20 that fails to receive and decode may transmit a NACK. It may be possible to set PUCCH-Config for multicast.
- the sharing or orthogonality of PUCCH resources between UEs may be determined by the network.
- the HARQ-ACK codebook may support Type 1 and Type 2. Unicast and multicast may be multiplexed.
- NACK-only feedback may be supported.
- a terminal 20 that has successfully received and decoded may not send feedback.
- a terminal 20 that fails to receive and decode may transmit a NACK.
- PUCCH resource configuration may be configured separately for unicast and groupcast.
- PUCCH resource configurations may be shared between UEs or may be orthogonal. PUCCH resources may be shared or separated.
- feedback may always be activated or feedback may be deactivated by RRC signaling for each UE.
- Valid or invalid may be signaled by the DCI.
- the DCI that schedules the group common PDSCH may notify the feedback validity or invalidity.
- the feedback for the initial SPS-PDSCH corresponding to SPS activation may be set as shown in A)-C) below.
- any of the following A) to C) may be applied without setting.
- the settings shown in A) to C) may be configured for each HARQ process or may be configured for each UE.
- the terminal 20 may receive from the base station 10 information indicating which of A) to C) below is to be applied.
- A) HARQ-ACK may be reported regardless of configuration or signaling by the network indicating that HARQ feedback on SPS-PDSCH is enabled or disabled. That is, HARQ-ACK may be reported regardless of whether HARQ feedback applied to SPS-PDSCHs after the initial SPS-PDSCH is enabled or disabled.
- the terminal 20 may assume that the DAI (Downlink Assignment Index) included in the activation DCI will increase.
- DAI Downlink Assignment Index
- FIG. 7 is a flowchart showing an example (1) of SPS activation according to the embodiment of the present invention.
- the terminal 20 receives DCI that activates the SPS-PDSCH.
- the terminal 20 reports HARQ-ACK corresponding to the initial SPS-PDSCH to the network regardless of the setting or instruction from the network of the HARQ feedback applied to the SPS-PDSCH after the initial SPS-PDSCH. do.
- HARQ-ACK may be reported based on configuration or signaling by the network indicating whether HARQ feedback for the initial SPS-PDSCH is enabled or disabled. That is, the terminal 20 may apply, to the HARQ feedback for the initial SPS-PDSCH, the setting or notification by the network indicating the validity or invalidity of the HARQ feedback applied to the SPS-PDSCH after the initial SPS-PDSCH.
- FIG. 8 is a flow chart showing an example (2) of SPS activation according to the embodiment of the present invention.
- the terminal 20 receives DCI that activates the SPS-PDSCH.
- the terminal 20 reports HARQ-ACK corresponding to the initial SPS-PDSCH to the network based on the setting or instruction from the network of the HARQ feedback applied to the SPS-PDSCH after the initial SPS-PDSCH. Decide whether to
- HARQ feedback for the initial SPS-PDSCH may be reported to the network in ways other than HARQ feedback.
- FIG. 9 is a flow chart showing an example (3) of SPS activation according to the embodiment of the present invention.
- the terminal 20 receives DCI that activates the SPS-PDSCH.
- the terminal 20 reports HARQ-ACK corresponding to the initial SPS-PDSCH to the network by means other than HARQ feedback.
- the network can decide whether to make feedback mandatory or not based on the level of performance required and the amount of available PUCCH resources.
- the UE capabilities shown in 1)-4) below may be reported to the network.
- the UE capabilities may be defined per HARQ process or per UE.
- the network can decide whether feedback is mandatory or not based on the behavior of the terminal 20.
- the terminal 20 can choose between simple implementation and subsequent PUCCH transmission to improve the reliability of activation without consuming resources.
- the method of reporting the successful detection of SPS activation other than HARQ feedback in C) above may be SR (Scheduling Request).
- the method may be MAC-CE (Medium Access Control - Control Element).
- a MAC-CE field that notifies detection confirmation of SPS activation may be defined, and the MAC-CE field may be notified to the network.
- '0' may indicate failure and '1' may indicate success.
- the MAC-CE does not include a field for notifying detection confirmation of SPS activation and the network receives the MAC-CE, it may be assumed that the detection confirmation of SPS activation has succeeded.
- multiple bit fields may signal multiple CC, BWP and/or SPS activation or deactivation (release) values.
- the terminal 20 may transmit information indicating the successful detection of the SPS activation at the next earliest transmission opportunity (eg SR or PUSCH).
- the next earliest transmission opportunity may be determined based on processing time. For example, when an activation is received in slot n, the next earliest transmission opportunity may be the earliest transmission opportunity after slot n plus the PUSCH preparation period.
- confirmation of detection of SPS activation may be requested via DCI or MAC-CE other than activation DCI.
- the terminal 20 may report the success or failure of detection of SPS activation as described above.
- the request may be made per UE or per HARQ process.
- the request may be notified by a new DCI format, a DCI field, a CRC for scrambling the RNTI of DCI, a search space, a CORESET (Control resource set), or a new MAC-CE.
- the DCI field may be a new field or a combination of existing fields.
- the DCI format may be an existing DCI format, such as DCI format 1_0, 1_1 or 2_X.
- the request may be notified by group common signaling or by UE-specific signaling.
- the signaling that notifies the request may include information indicating which SPS to activate.
- ACK or NACK may be reported by the request.
- ACK may indicate successful detection of SPS activation and NACK may indicate failure to detect SPS activation.
- NACK may be reported by the request. It may not be sent if SPS activation is successfully detected, and a NACK may be sent if SPS activation is not detected.
- the terminal 20 can control the feedback to the initial SPS-PDSCH as necessary in the NTN environment or MBS environment to improve the reliability of SPS activation.
- SPS Semi-persistent scheduling
- the base stations 10 and terminals 20 contain the functionality to implement the embodiments described above. However, each of the base station 10 and terminal 20 may have only part of the functions in the embodiment.
- FIG. 10 is a diagram showing an example of the functional configuration of base station 10 according to the embodiment of the present invention.
- the base station 10 has a transmitting section 110, a receiving section 120, a setting section 130, and a control section 140.
- the functional configuration shown in FIG. 10 is merely an example. As long as the operation according to the embodiment of the present invention can be executed, the functional division and the names of the functional units may be arbitrary.
- the transmission unit 110 includes a function of generating a signal to be transmitted to the terminal 20 side and wirelessly transmitting the signal.
- the transmitter 110 also transmits inter-network-node messages to other network nodes.
- the receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, higher layer information from the received signals. Also, the transmitting unit 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, etc. to the terminal 20 .
- the receiving unit 120 also receives inter-network node messages from other network nodes.
- the setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20 .
- the content of the setting information is, for example, information related to communication in NTN.
- the control unit 140 controls communication in NTN as described in the embodiment. Also, the control unit 140 controls communication with the terminal 20 based on the UE capability report regarding radio parameters received from the terminal 20 .
- a functional unit related to signal transmission in control unit 140 may be included in transmitting unit 110
- a functional unit related to signal reception in control unit 140 may be included in receiving unit 120 .
- FIG. 11 is a diagram showing an example of the functional configuration of terminal 20 according to the embodiment of the present invention.
- the terminal 20 has a transmitting section 210, a receiving section 220, a setting section 230, and a control section 240.
- the functional configuration shown in FIG. 11 is merely an example. As long as the operation according to the embodiment of the present invention can be executed, the functional division and the names of the functional units may be arbitrary.
- the transmission unit 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
- the receiving unit 220 wirelessly receives various signals and acquires a higher layer signal from the received physical layer signal. Also, the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL/UL/SL control signals and the like transmitted from the base station 10 .
- the transmission unit 210 as D2D communication, to the other terminal 20, PSCCH (Physical Sidelink Control Channel), PSSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel) etc.
- PSCCH Physical Sidelink Control Channel
- PSSCH Physical Sidelink Shared Channel
- PSDCH Physical Sidelink Discovery Channel
- PSBCH Physical Sidelink Broadcast Channel
- the setting unit 230 stores various setting information received from the base station 10 by the receiving unit 220 .
- the setting unit 230 also stores preset setting information.
- the content of the setting information is, for example, information related to communication in NTN.
- the control unit 240 controls communication in NTN as described in the embodiment.
- a functional unit related to signal transmission in control unit 240 may be included in transmitting unit 210
- a functional unit related to signal reception in control unit 240 may be included in receiving unit 220 .
- each functional block may be implemented using one device that is physically or logically coupled, or directly or indirectly using two or more devices that are physically or logically separated (e.g. , wired, wireless, etc.) and may be implemented using these multiple devices.
- a functional block may be implemented by combining software in the one device or the plurality of devices.
- Functions include judging, determining, determining, calculating, calculating, processing, deriving, investigating, searching, checking, receiving, transmitting, outputting, accessing, resolving, selecting, choosing, establishing, comparing, assuming, expecting, assuming, Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc. can't
- a functional block (component) that performs transmission is called a transmitting unit or transmitter.
- the implementation method is not particularly limited.
- the base station 10, the terminal 20, etc. may function as a computer that performs processing of the wireless communication method of the present disclosure.
- FIG. 12 is a diagram illustrating an example of hardware configurations of the base station 10 and the terminal 20 according to an embodiment of the present disclosure.
- the base station 10 and terminal 20 described above are physically configured as a computer device 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. good too.
- the term "apparatus” can be read as a circuit, device, unit, or the like.
- the hardware configuration of the base station 10 and terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured without some devices.
- Each function of the base station 10 and the terminal 20 is performed by the processor 1001 performing calculations and controlling communication by the communication device 1004 by loading predetermined software (programs) onto hardware such as the processor 1001 and the storage device 1002. or by controlling at least one of data reading and writing in the storage device 1002 and the auxiliary storage device 1003 .
- the processor 1001 for example, operates an operating system and controls the entire computer.
- the processor 1001 may be configured with a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, registers, and the like.
- CPU central processing unit
- the control unit 140 , the control unit 240 and the like described above may be implemented by the processor 1001 .
- the processor 1001 reads programs (program codes), software modules, data, etc. 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 them.
- programs program codes
- software modules software modules
- data etc.
- the program a program that causes a computer to execute at least part of the operations described in the above embodiments is used.
- control unit 140 of base station 10 shown in FIG. 10 may be implemented by a control program stored in storage device 1002 and operated by processor 1001 .
- the control unit 240 of the terminal 20 shown in FIG. 11 may be implemented by a control program stored in the storage device 1002 and operated by the processor 1001.
- FIG. Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via an electric communication line.
- the storage device 1002 is a computer-readable recording medium, for example, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. may be configured.
- the storage device 1002 may also be called a register, cache, main memory (main storage device), or the like.
- the storage device 1002 can store executable programs (program code), software modules, etc. for implementing a 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, a Blu -ray disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, and/or the like.
- the storage medium described above may be, for example, a database, server, or other suitable medium including at least one of storage device 1002 and secondary storage device 1003 .
- the communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called 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, etc., in order to realize at least one of, for example, frequency division duplex (FDD) and time division duplex (TDD).
- FDD frequency division duplex
- TDD time division duplex
- the transceiver may be physically or logically separate implementations for the transmitter and receiver.
- the input device 1005 is an input device (for example, keyboard, mouse, microphone, switch, button, sensor, etc.) that receives input from the outside.
- the output device 1006 is an output device (for example, display, speaker, LED lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated (for example, a touch panel).
- Each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information.
- the bus 1007 may be configured using a single bus, or may be configured using different buses between devices.
- the base station 10 and the terminal 20 include hardware such as microprocessors, digital signal processors (DSPs), ASICs (Application Specific Integrated Circuits), PLDs (Programmable Logic Devices), and FPGAs (Field Programmable Gate Arrays). , and part or all of each functional block may be implemented by the hardware.
- processor 1001 may be implemented using at least one of these pieces of hardware.
- a vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, and various sensors 2021-2029. , an information service unit 2012 and a communication module 2013 .
- Each aspect/embodiment described in the present disclosure may be applied to a communication device mounted on vehicle 2001, and may be applied to communication module 2013, for example.
- the driving unit 2002 is configured by, for example, an engine, a motor, or a hybrid of the engine and the motor.
- the steering unit 2003 includes at least a steering wheel (also referred to as steering wheel), and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.
- the electronic control unit 2010 is composed of a microprocessor 2031 , a memory (ROM, RAM) 2032 and a communication port (IO port) 2033 . Signals from various sensors 2021 to 2029 provided in the vehicle 2001 are input to the electronic control unit 2010 .
- the electronic control unit 2010 may also be called an ECU (Electronic Control Unit).
- the signals from the various sensors 2021 to 2029 include the current signal from the current sensor 2021 that senses the current of the motor, the rotation speed signal of the front and rear wheels acquired by the rotation speed sensor 2022, and the front wheel acquired by the air pressure sensor 2023. and rear wheel air pressure signal, vehicle speed signal obtained by vehicle speed sensor 2024, acceleration signal obtained by acceleration sensor 2025, accelerator pedal depression amount signal obtained by accelerator pedal sensor 2029, brake pedal sensor 2026 obtained by There are a brake pedal depression amount signal, a shift lever operation signal acquired by the shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028, and the like.
- the information service unit 2012 includes various devices such as car navigation systems, audio systems, speakers, televisions, and radios for providing various types of information such as driving information, traffic information, and entertainment information, and one or more devices for controlling these devices. ECU.
- the information service unit 2012 uses information acquired from an external device via the communication module 2013 or the like to provide passengers of the vehicle 2001 with various multimedia information and multimedia services.
- Driving support system unit 2030 includes millimeter wave radar, LiDAR (Light Detection and Ranging), camera, positioning locator (e.g., GNSS, etc.), map information (e.g., high-definition (HD) map, automatic driving vehicle (AV) map, etc. ), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, AI processors, etc., to prevent accidents and reduce the driver's driving load. and one or more ECUs for controlling these devices.
- the driving support system unit 2030 transmits and receives various information via the communication module 2013, and realizes a driving support function or an automatic driving function.
- the communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via communication ports.
- the communication module 2013 communicates with the vehicle 2001 through the communication port 2033, the drive unit 2002, the steering unit 2003, the accelerator pedal 2004, the brake pedal 2005, the shift lever 2006, the front wheels 2007, the rear wheels 2008, the axle 2009, the electronic Data is transmitted and received between the microprocessor 2031 and memory (ROM, RAM) 2032 in the control unit 2010 and the sensors 2021-29.
- the communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it transmits and receives various information to and from an external device via wireless communication.
- Communication module 2013 may be internal or external to electronic control unit 2010 .
- the external device may be, for example, a base station, a mobile station, or the like.
- the communication module 2013 transmits the current signal from the current sensor input to the electronic control unit 2010 to an external device via wireless communication.
- the communication module 2013 receives the rotation speed signal of the front and rear wheels obtained by the rotation speed sensor 2022, the air pressure signal of the front and rear wheels obtained by the air pressure sensor 2023, and the vehicle speed sensor. 2024, an acceleration signal obtained by an acceleration sensor 2025, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by a brake pedal sensor 2026, and a shift lever.
- a shift lever operation signal obtained by the sensor 2027 and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by the object detection sensor 2028 are also transmitted to an external device via wireless communication.
- the communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from external devices, and displays it on the information service unit 2012 provided in the vehicle 2001 .
- Communication module 2013 also stores various information received from external devices in memory 2032 available to microprocessor 2031 .
- the microprocessor 2031 controls the drive unit 2002, the steering unit 2003, the accelerator pedal 2004, the brake pedal 2005, the shift lever 2006, the front wheels 2007, the rear wheels 2008, and the axle 2009 provided in the vehicle 2001.
- sensors 2021 to 2029 and the like may be controlled.
- SPS Semi-persistent scheduling
- PDSCH Physical Downlink Shared Channel
- NTN Non-Terrestrial Network or MBS (Multicast and broadcast services)
- a receiving unit that receives control information to be activated from a base station; a control unit that determines an operation method related to feedback corresponding to the control information based on a first setting set by the base station; and a transmitter for transmitting said feedback to said base station if determined to do so.
- the terminal 20 can control the feedback to the initial SPS-PDSCH as necessary in the NTN environment or MBS environment to improve the reliability of SPS activation. That is, in a wireless communication system, activation of SPS (Semi-persistent scheduling) can be properly performed.
- the control unit may determine to always perform feedback corresponding to the control information regardless of the second setting indicating whether to perform feedback on the SPS-PDSCH.
- the terminal 20 can control the feedback to the initial SPS-PDSCH as necessary in the NTN environment or the MBS environment, and improve the reliability of SPS activation.
- the control unit may determine whether or not to perform feedback corresponding to the control information based on a second setting indicating whether or not to perform feedback on the SPS-PDSCH.
- the terminal 20 can control the feedback to the initial SPS-PDSCH as necessary in the NTN environment or the MBS environment, and improve the reliability of SPS activation.
- the transmission unit may transmit the feedback to the base station via HARQ (Hybrid automatic repeat request) feedback, SR (Scheduling request) or MAC-CE (Medium Access Control - Control Element).
- HARQ Hybrid automatic repeat request
- SR Service Request
- MAC-CE Medium Access Control - Control Element
- the receiving unit may receive the signal requesting the feedback from the base station.
- the terminal 20 can control the feedback to the initial SPS-PDSCH as necessary in the NTN environment or the MBS environment, and improve the reliability of SPS activation.
- control information for activating SPS (Semi-persistent scheduling)-PDSCH (Physical Downlink Shared Channel) in NTN (Non-Terrestrial Network or MBS (Multicast and broadcast services) a receiving procedure received from a base station; a control procedure for determining an operation method related to feedback corresponding to the control information based on a first setting set by the base station; a transmission procedure for transmitting said feedback to said base station.
- SPS Semi-persistent scheduling
- PDSCH Physical Downlink Shared Channel
- NTN Non-Terrestrial Network or MBS (Multicast and broadcast services
- the terminal 20 can control the feedback to the initial SPS-PDSCH as necessary in the NTN environment or MBS environment to improve the reliability of SPS activation. That is, in a wireless communication system, activation of SPS (Semi-persistent scheduling) can be properly performed.
- the operations of a plurality of functional units may be physically performed by one component, or the operations of one functional unit may be physically performed by a plurality of components.
- the processing order may be changed as long as there is no contradiction.
- the base station 10 and the terminal 20 have been described using functional block diagrams for convenience of explanation of processing, such devices may be implemented in hardware, software, or a combination thereof.
- the software operated by the processor of the base station 10 according to the embodiment of the present invention and the software operated by the processor of the terminal 20 according to the embodiment of the present invention are stored in random access memory (RAM), flash memory, read-only memory, respectively. (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other appropriate storage medium.
- notification of information is not limited to the aspects/embodiments described in the present disclosure, and may be performed using other methods.
- notification of information includes physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (e.g., 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.
- RRC signaling may also be called an RRC message, for example, RRC It may be a connection setup (RRC Connection Setup) message, an RRC connection reconfiguration message, or the like.
- Each aspect/embodiment described in the present disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system) system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer, a decimal number)), FRA (Future Radio Access), NR (new Radio), New radio access ( NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802 .16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and other suitable systems, and any extensions, modifications, creations, and provisions based on these systems. It may be applied to
- a specific operation performed by the base station 10 in this specification may be performed by its upper node in some cases.
- various operations performed for communication with terminal 20 may be performed by base station 10 and other network nodes other than base station 10 (eg, but not limited to MME or S-GW).
- base station 10 e.g, but not limited to MME or S-GW
- the other network node may be a combination of a plurality of other network nodes (for example, MME and S-GW).
- Information, signals, etc. described in the present disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). It may be input and output via multiple network nodes.
- Input/output information may be stored in a specific location (for example, memory) or managed using a management table. Input/output information and the like can be overwritten, updated, or appended. The output information and the like may be deleted. The entered information and 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 performed by comparing numerical values (e.g. , comparison with a predetermined value).
- Software whether referred to as software, firmware, middleware, microcode, hardware description language or otherwise, includes instructions, instruction sets, code, code segments, program code, programs, subprograms, and software modules. , applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and the like.
- software, instructions, information, etc. may be transmitted and received via a transmission medium.
- 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.) to website, Wired and/or wireless technologies are included within the definition of transmission medium when sent from a server or other remote source.
- wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.
- wireless technology infrared, microwave, etc.
- data, instructions, commands, information, signals, bits, symbols, chips, etc. may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. may be represented by a combination of
- the channel and/or symbols may be signaling.
- a signal may also be a message.
- a component carrier may also be called a carrier frequency, a cell, a frequency carrier, or the like.
- system and “network” used in this disclosure are used interchangeably.
- information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values from a predetermined value, or may be expressed using other corresponding information.
- radio resources may be indexed.
- base station BS
- radio base station base station
- base station device fixed station
- NodeB NodeB
- eNodeB eNodeB
- gNodeB gNodeB
- a base station can accommodate one or more (eg, three) cells.
- the overall coverage area of the base station can be partitioned into multiple smaller areas, each smaller area being associated with a base station subsystem (e.g., an indoor small base station (RRH:
- RRH indoor small base station
- the term "cell” or “sector” refers to part or all of the coverage area of at least one of the base stations and base station subsystems serving communication services in this coverage.
- MS Mobile Station
- UE User Equipment
- a mobile station is defined by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless It may also be called a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
- At least one of the base station and 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 a mobile object, the mobile object itself, or the like.
- the mobile object may be a vehicle (e.g., car, airplane, etc.), an unmanned mobile object (e.g., drone, self-driving car, etc.), or a robot (manned or unmanned ).
- at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations.
- at least one of the base station and 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 read as a user terminal.
- communication between a base station and a user terminal is replaced with communication between a plurality of terminals 20 (for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.)
- the terminal 20 may have the functions of the base station 10 described above.
- words such as "up” and “down” may be replaced with words corresponding to inter-terminal communication (for example, "side”).
- uplink channels, downlink channels, etc. may be read as side channels.
- user terminals in the present disclosure may be read as base stations.
- the base station may have the functions that the above-described user terminal has.
- determining and “determining” used in this disclosure may encompass a wide variety of actions.
- “Judgement” and “determination” are, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (eg, lookup in a table, database, or other data structure), ascertaining as “judged” or “determined”, and the like.
- "judgment” and “determination” are used for receiving (e.g., receiving information), transmitting (e.g., transmitting information), input, output, access (accessing) (for example, accessing data in memory) may include deeming that a "judgment” or “decision” has been made.
- judgment and “decision” are considered to be “judgment” and “decision” by resolving, selecting, choosing, establishing, comparing, etc. can contain.
- judgment and “decision” may include considering that some action is “judgment” and “decision”.
- judgment (decision) may be read as “assuming”, “expecting”, “considering”, or the like.
- connection means any direct or indirect connection or coupling between two or more elements, It can include the presence of one or more intermediate elements between two elements being “connected” or “coupled.” Couplings or connections between elements may be physical, logical, or a combination thereof. For example, “connection” may be read as "access”.
- two elements are defined 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. , electromagnetic energy having wavelengths in the microwave and optical (both visible and invisible) regions, and the like.
- the reference signal can also be abbreviated as RS (Reference Signal), and may also be called Pilot depending on the applicable standard.
- RS Reference Signal
- any reference to elements using the "first,” “second,” etc. designations used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, reference to a first and second element does not imply that only two elements can be employed or that the first element must precede the second element in any way.
- a radio frame may consist 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 also consist of one or more slots in the time domain. A subframe may be of a fixed length of time (eg, 1 ms) independent of numerology.
- a numerology may be a communication parameter that applies to the transmission and/or reception of a signal or channel. Numerology, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, transceiver It may indicate at least one of certain filtering operations performed in the frequency domain, certain windowing operations performed by the transceiver in the time domain, and/or the like.
- SCS subcarrier spacing
- TTI transmission time interval
- transceiver It may indicate at least one of certain filtering operations performed in the frequency domain, certain windowing operations performed by the transceiver in the time domain, and/or the like.
- a slot may consist of one or more 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 unit of time based on numerology.
- a slot may contain multiple mini-slots. Each minislot may consist of one or more symbols in the time domain. A minislot may also be referred to as a subslot. A minislot may consist of fewer symbols than a slot.
- PDSCH (or PUSCH) transmitted in time units larger than minislots may be referred to as PDSCH (or PUSCH) mapping type A.
- PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.
- Radio frames, subframes, slots, minislots and symbols all represent time units when transmitting signals. Radio frames, subframes, slots, minislots and symbols may be referred to by other corresponding designations.
- one subframe may be called a Transmission Time Interval (TTI)
- TTI Transmission Time Interval
- TTI Transmission Time Interval
- TTI Transmission Time Interval
- one slot or one minislot may be called a TTI.
- TTI Transmission Time Interval
- at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1-13 symbols), or a period longer than 1 ms may be Note that the unit representing the TTI may be called a slot, mini-slot, or the like instead of a subframe.
- TTI refers to, for example, the minimum scheduling time unit in wireless communication.
- the base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each terminal 20) to each terminal 20 on a TTI basis.
- radio resources frequency bandwidth, transmission power, etc. that can be used by each terminal 20
- TTI is not limited to this.
- a TTI may be a transmission time unit such as a channel-encoded data packet (transport block), code block, or codeword, or may be a processing unit such as scheduling and link adaptation. Note that when a TTI is given, the time interval (for example, the number of symbols) in which transport blocks, code blocks, codewords, etc. are actually mapped may be shorter than the TTI.
- one or more TTIs may be the minimum scheduling time unit. Also, the number of slots (the 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), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, or the like.
- a TTI that is shorter than a normal TTI may be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a slot, and the like.
- the long TTI (e.g., normal TTI, subframe, etc.) may be replaced with a TTI having a time length exceeding 1 ms
- the short TTI e.g., shortened TTI, etc.
- a TTI having the above TTI length may be read instead.
- a resource block is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain.
- the number of subcarriers included in the RB may be the same regardless of the numerology, and may be 12, for example.
- the number of subcarriers included in an RB may be determined based on numerology.
- the time domain of an RB may include one or more symbols and may be 1 slot, 1 minislot, 1 subframe, or 1 TTI long.
- One TTI, one subframe, etc. may each consist of one or more resource blocks.
- One or more RBs are physical resource blocks (PRBs), sub-carrier groups (SCGs), resource element groups (REGs), PRB pairs, RB pairs, etc. may be called.
- PRBs physical resource blocks
- SCGs sub-carrier groups
- REGs resource element groups
- PRB pairs RB pairs, etc. may be called.
- a resource block may be composed of one or more resource elements (RE: Resource Element).
- RE Resource Element
- 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
- a bandwidth part (which may also be called a bandwidth part) may represent a subset of contiguous common resource blocks (RBs) for a certain numerology on a certain carrier.
- the common RB may be identified by an RB index based on the common reference point of the carrier.
- PRBs may be defined in a BWP and numbered within that BWP.
- the BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP).
- UL BWP UL BWP
- DL BWP DL BWP
- One or multiple BWPs may be configured for a UE within one carrier.
- At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal/channel outside the active BWP.
- BWP bitmap
- radio frames, subframes, slots, minislots and symbols described above are only examples.
- the number of subframes contained in a radio frame the number of slots per subframe or radio frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, the number of Configurations such as the number of subcarriers, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc.
- CP cyclic prefix
- a and B are different may mean “A and B are different from each other.”
- the term may also mean that "A and B are different from C”.
- Terms such as “separate,” “coupled,” etc. may also be interpreted in the same manner as “different.”
- notification of predetermined information is not limited to being performed explicitly, but may be performed implicitly (for example, not notifying the predetermined information). good too.
- base station 110 transmitting unit 120 receiving unit 130 setting unit 140 control unit 20 terminal 210 transmitting unit 220 receiving unit 230 setting unit 240 control unit 1001 processor 1002 storage device 1003 auxiliary storage device 1004 communication device 1005 input device 1006 output device
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Abstract
Description
HARQ Process ID = [floor (CURRENT_slot × 10 / (numberOfSlotsPerFrame × periodicity))] modulo nrofHARQ-Processes + harq-ProcID-Offset
2)上記A)に示される動作をサポートするか否か。
3)上記B)に示される動作をサポートするか否か。
4)上記C)に示される動作をサポートするか否か。
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10及び端末20の機能構成例を説明する。基地局10及び端末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10及び端末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10は、本発明の実施の形態における基地局10の機能構成の一例を示す図である。図10に示されるように、基地局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10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11は、本発明の実施の形態における端末20の機能構成の一例を示す図である。図11に示されるように、端末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11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10及び図11)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、NTN(Non-Terrestrial Network又はMBS(Multicast and broadcast services)において、SPS(Semi-persistent scheduling)-PDSCH(Physical Downlink Shared Channel)をアクティベーションする制御情報を基地局から受信する受信部と、前記制御情報に対応するフィードバックに係る動作方法を、前記基地局から設定される第1の設定に基づいて決定する制御部と、前記フィードバックを実行すると決定された場合、前記フィードバックを前記基地局に送信する送信部とを有する端末が提供される。
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10及び端末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端末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 端末
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)
- NTN(Non-Terrestrial Network又はMBS(Multicast and broadcast services)において、SPS(Semi-persistent scheduling)-PDSCH(Physical Downlink Shared Channel)をアクティベーションする制御情報を基地局から受信する受信部と、
前記制御情報に対応するフィードバックに係る動作方法を、前記基地局から設定される第1の設定に基づいて決定する制御部と、
前記フィードバックを実行すると決定された場合、前記フィードバックを前記基地局に送信する送信部とを有する端末。 - 前記制御部は、SPS-PDSCHに対するフィードバックを実行するか否かを示す第2の設定によらず、常に前記制御情報に対応するフィードバックを実行すると決定する請求項1記載の端末。
- 前記制御部は、SPS-PDSCHに対するフィードバックを実行するか否かを示す第2の設定に基づいて、前記制御情報に対応するフィードバックを実行するか否か決定する請求項1記載の端末。
- 前記送信部は、前記フィードバックを、HARQ(Hybrid automatic repeat request)フィードバック、SR(Scheduling request)又はMAC-CE(Medium Access Control - Control Element)を介して前記基地局に送信する請求項1記載の端末。
- 前記受信部は、前記フィードバックを要求する信号を前記基地局から受信する請求項1記載の端末。
- NTN(Non-Terrestrial Network又はMBS(Multicast and broadcast services)において、SPS(Semi-persistent scheduling)-PDSCH(Physical Downlink Shared Channel)をアクティベーションする制御情報を基地局から受信する受信手順と、
前記制御情報に対応するフィードバックに係る動作方法を、前記基地局から設定される第1の設定に基づいて決定する制御手順と、
前記フィードバックを実行すると決定された場合、前記フィードバックを前記基地局に送信する送信手順とを端末が実行する通信方法。
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