WO2025210928A1 - Terminal, station de base et procédé de communication - Google Patents

Terminal, station de base et procédé de communication

Info

Publication number
WO2025210928A1
WO2025210928A1 PCT/JP2024/014191 JP2024014191W WO2025210928A1 WO 2025210928 A1 WO2025210928 A1 WO 2025210928A1 JP 2024014191 W JP2024014191 W JP 2024014191W WO 2025210928 A1 WO2025210928 A1 WO 2025210928A1
Authority
WO
WIPO (PCT)
Prior art keywords
sequence
overlaid
information
ofdm
base station
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2024/014191
Other languages
English (en)
Japanese (ja)
Inventor
慎也 熊谷
崇伸 小野田
大樹 武田
椋己 平野
真哉 岡村
聡 永田
ユー ジャン
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTT Docomo Inc
Original Assignee
NTT Docomo Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTT Docomo Inc filed Critical NTT Docomo Inc
Priority to PCT/JP2024/014191 priority Critical patent/WO2025210928A1/fr
Publication of WO2025210928A1 publication Critical patent/WO2025210928A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • 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, a base station, and a communication method in a wireless communication system.
  • 3GPP registered trademark (3rd Generation Partnership Project) is considering technologies to achieve even greater system capacity, even faster data transmission speeds, and even lower latency in wireless sections (for example, Non-Patent Document 1 and Non-Patent Document 2). Furthermore, 3GPP Rel-19 is discussing low-power wake-up signal (LP (Low Power)-WUS (Wake-Up Signal))/LP-WUR (Wake-Up Receiver) technologies to reduce power consumption in wireless communication systems.
  • LP Low Power
  • WUS Wideke-Up Signal
  • LP-WUR Low-WUR
  • an OOK-based LP-WUS with an OFDM (Orthogonal Frequency Division Multiplexing) sequence overlaid on an OOK (On-Off-Keying) symbol is being considered.
  • the terminal comprises a receiving unit that receives a signal from a base station that includes a sequence overlaid on a predetermined symbol, and a control unit that determines whether the overlaid sequence is a sequence that carries information bits of the signal or a sequence that does not carry the information bits, and the receiving unit receives the low-power wake-up signal based on the determination.
  • This embodiment defines the optimal OFDM sequence configuration for a low-power wake-up signal in a wireless communication system.
  • FIG. 1 is a diagram illustrating a wireless communication system according to an embodiment of the present invention.
  • 1 shows an example of the configuration of an overlaid OFDM sequence in this embodiment.
  • 1 shows an example of the configuration of an overlaid OFDM sequence in this embodiment.
  • 1 shows an example of the configuration of an overlaid OFDM sequence in this embodiment.
  • 1 shows an example of the configuration of an overlaid OFDM sequence in this embodiment.
  • 1 shows an example of the configuration of an overlaid OFDM sequence in this embodiment.
  • FIG. 2 is a diagram showing an example of the configuration of an overlaid OFDM sequence in which the same single known sequence is used in this embodiment.
  • FIG. 1 shows an example of the configuration of an overlaid OFDM sequence in which the same single known sequence is used in this embodiment.
  • 10 is a diagram showing an example of the configuration of an overlaid OFDM sequence in which different known sequences are used in this embodiment.
  • 10 shows an example of the configuration of an overlaid OFDM sequence according to a modified example of option 3-1 in this embodiment.
  • 10 shows an example of the configuration of an overlaid OFDM sequence according to a modified example of option 3-1 in this embodiment.
  • 10 shows an example of the configuration of an overlay OFDM sequence of option 3-1 in this embodiment.
  • 10 shows an example of the configuration of an overlaid OFDM sequence of option 3-1 in this embodiment.
  • 10 shows an example of the configuration of an overlaid OFDM sequence of option 3-1 in this embodiment.
  • 10 shows an example of the configuration of an overlay OFDM sequence of option 3-2 in this embodiment.
  • 10 shows an example of the configuration of an overlaid OFDM sequence of option 3-2 in this embodiment.
  • 10 shows an example of the configuration of an overlaid OFDM sequence of option 3-2 in this embodiment.
  • 10 shows an example of the configuration of an overlay OFDM sequence according to a first modification of the present embodiment.
  • 10 shows an example of the configuration of an overlaid OFDM sequence according to a first modification of the present embodiment.
  • 10 shows an example of the configuration of an overlaid OFDM sequence according to a first modification of the present embodiment.
  • 10 shows an example of the configuration of an overlay OFDM sequence according to a first modification of the present embodiment.
  • 10 shows an example of the configuration of an overlaid OFDM sequence according to a first modification of the present embodiment.
  • 10 shows an example of the configuration of an overlay OFDM sequence according to Modification 2 of this embodiment.
  • 10 shows an example of the configuration of an overlaid OFDM sequence according to a second modification of the present embodiment.
  • 10 shows an example of the configuration of an overlaid OFDM sequence according to a second modification of the present embodiment.
  • 10 shows an example of the configuration of an overlay OFDM sequence according to Modification 2 of this embodiment.
  • 10 shows an example of the configuration of an overlaid OFDM sequence according to a second modification of the present embodiment.
  • 10 shows an example of the configuration of an LP-WUS according to a third modification of the present embodiment.
  • 10 shows an example of the configuration of an LP-WUS according to a third modification of the present embodiment.
  • 10 shows an example of the configuration of an LP-WUS according to a third modification of the present embodiment.
  • 10 shows an example of the configuration of an LP-WUS according to a third modification of the present embodiment.
  • 10 shows an example of the configuration of an LP-WUS according to a third modification of the present embodiment.
  • 10 shows an example of the configuration of an LP-WUS according to a third modification of the present embodiment.
  • 10 shows an example of the configuration of an LP-WUS according to a third modification of the present embodiment.
  • 10 shows an example of the configuration of an LP-WUS according to a third modification of the present embodiment.
  • 10 shows an example of the configuration of an LP-WUS according to a third modification of the present embodiment.
  • FIG. 10 shows an example of the configuration of an LP-WUS according to a third modification of the present embodiment. 10 shows an example of the configuration of an LP-WUS according to a third modification of the present embodiment. 10 shows an example of the configuration of an LP-WUS according to a third modification of the present embodiment.
  • FIG. 2 is a diagram illustrating an example of a functional configuration of a base station according to the present embodiment.
  • FIG. 2 is a diagram illustrating an example of a functional configuration of a terminal according to the present embodiment.
  • FIG. 2 is a diagram illustrating an example of a hardware configuration of a base station or a terminal according to the present embodiment.
  • 1 is a diagram illustrating an example of a configuration of a vehicle according to an embodiment of the present invention.
  • LR Low-Power Wake Up Signal
  • MR Main Radio
  • LR may have a function that triggers the power OFF of the MR or the power ON of the MR when it receives an LP-WUS signal.
  • Case 3 The OFDM sequence carries information.
  • the gNB constructs a set of Ns known sequences, and one of the Ns sequences can be transmitted to carry log2(Ns) bits.
  • Case 2 has better detection performance for OFDM-based LP-WUR than Case 3. However, it requires that the OFDM-based LP-WUR receive all OFDM symbols of the LP-WUS. That is, longer reception requires higher power consumption.
  • Case 3 requires the OFDM-based LP-WUR to receive only a portion of the LP-WUS's OFDM symbols. That is, shorter reception can result in lower power consumption. However, the detection performance of the OFDM-based LP-WUR in Case 3 is lower than in Case 2.
  • a common OFDM sequence X may be applied to all information bits as the OFDM sequence overlaid on the 1 of the OOK symbol. For example, when information bit 0 is modulated to 0 and 1 of the OOK symbol, OFDM sequence X may be applied to this 1, and when information bit 1 is modulated to 1 and 0 of the OOK symbol, OFDM sequence X may be applied to this 1.
  • the overlaid OFDM sequence does not carry any information and a "known sequence" may be used as the overlaid OFDM sequence.
  • Option 3-1 The overlaid OFDM sequence carries a portion of the information bits of the LP-WUS.
  • the OFDM-based LP-WUR can obtain the entire information bits through the OFDM sequence and OOK symbols.
  • Option 3-2 The overlaid OFDM sequence carries all the information bits of the LP-WUS.
  • the OFDM-based LP-WUR can obtain all the information bits through the OFDM sequence.
  • the base station 10 may transmit information indicating the option to be used to the terminal 20 using at least one of system information (SIB, etc.), RRC, MAC CE, or DCI.
  • SIB system information
  • RRC Radio Resource Control
  • MAC CE MAC CE
  • DCI DCI
  • the system information may also be referred to as broadcast information.
  • the overlaid OFDM sequence does not carry any information. Whether to transmit the overlaid OFDM sequence may depend on the implementation of the base station 10.
  • the "known sequences” may differ between LP-WUS OOK ON chips.
  • the different "known sequences” may be predefined by the specification.
  • the different "known sequences” may be included in a set of predefined sequences, and the system information and/or RRC may indicate the sequences to use as the set of sequences or the different "known sequences" included in the set of sequences.
  • the overlaid OFDM sequence may carry information: one of the sequences included in the set of known sequences may be transmitted to carry the information bits.
  • the "set of known sequences" may be predefined by a specification or may be indicated by system information and/or RRC.
  • the number of information bits in each sequence included in the set of known sequences may be predefined by a specification or may be indicated by system information and/or RRC.
  • the overlaid OFDM sequence may carry part of the information bits of the LP-WUS, and the OFDM-based LP-WUR may obtain the entire information bits through the OFDM sequence and the OOK symbols.
  • Figures 2A-2C show an example of the configuration of the overlaid OFDM sequence in Option 3-1.
  • N1 may be predefined by the specifications or may be indicated by system information and/or RRC.
  • the overlaid OFDM sequence may carry all the information bits of the LP-WUS, and the OFDM-based LP-WUR can obtain all the information bits through the OFDM sequence.
  • the overlaid OFDM sequence in the variation of Option 3-1 described above is overlaid on the first N1 OOK symbols, i.e., the bits overlaid in the overlaid OFDM sequence are the bits corresponding to the first N1 OOK symbols (or the bits in the same positions as the first N1 OOK symbols).
  • the number of information bits carried by the overlaid OFDM sequence of one OOK symbol may be determined based on the total number of OOK symbols (N) of one LP-WUS and N1.
  • N1 may have one or more values (candidate values).
  • each overlaid OFDM sequence carries 1 bit of information.
  • the OFDM sequence overlaid on the 1st bit indicates 1 bit of information, "1".
  • the OFDM sequences overlaid on the 2nd to 4th bits each indicate 1 bit of information, "0", "0", or "1".
  • the information "1" indicated in the OFDM sequence overlaid on the 1st bit 1 is set for the 5th bit.
  • 0, 0, or 1 is set for the 6th to 8th bits, respectively.
  • each overlaid OFDM sequence carries 3 bits of information.
  • the OFDM sequence overlaid on the first bit indicates 3 bits of information "011”
  • the OFDM sequence overlaid on the second bit indicates 3 bits of information "001”.
  • 0, 1, and 1 are set for bits 3-5, respectively.
  • 0, 0, and 1 are set for bits 6-8, respectively.
  • Figures 7A-7C show an example of the configuration of LP-WUS information for option 3-1.
  • Figures 7D-7F show an example of the configuration of LP-WUS information for option 3-2.
  • an overlaid OFDM sequence may be applied to the (N-1) symbols following the first symbol (in the case of Option 3-1) or the (N-N1) symbols following the first N1 OOK symbols (in the case of Option 3-2).
  • the overlaid OFDM sequence applied to these (N-1) or (N-N1) symbols may be the same OFDM sequence as the first symbol in the case of Option 3-1, or the same OFDM sequence as the first N1 symbols in the case of Option 3-2.
  • the overlaid OFDM sequence for the first bit indicates "10”
  • the overlaid OFDM sequence for the second bit indicates "01".
  • the same overlaid OFDM sequence as the overlaid OFDM sequence for the first bit is applied to the third bit symbol in the frame in Figure 8D.
  • the same overlaid OFDM sequence as the overlaid OFDM sequence for the second bit is applied to the fourth bit symbol in the frame in Figure 8D.
  • variant 2 of this embodiment similar to variant 1, in the case of N-symbol LP-WUS, the overlaid OFDM sequence is applied to the (N-1) symbols following the first symbol (in the case of option 3-1) or the (N-N1) symbols following the first N1 OOK symbols (in the case of option 3-2).
  • the overlaid OFDM sequence applied to these (N-1) or (N-N1) symbols may be any overlaid OFDM sequence, and may be, for example, predefined by a specification or indicated by system information and/or RRC.
  • any overlaid OFDM sequence is applied to the symbols within the box.
  • the overlaid OFDM sequence may be the same or different for each repetition of the LP-WUS. Whether the overlaid OFDM sequence is the same or different may be predefined by the specifications or may be indicated by system information and/or RRC.
  • the same LP-WUS (repetition 1) as shown in FIG. 10A is repeated as the LP-WUS for repetition 2 in FIG. 10B and the LP-WUS for repetition 3 in FIG. 10C.
  • the same LP-WUS (repetition 1) as shown in FIG. 10D is repeated as the LP-WUS for repetition 2 in FIG. 10E and the LP-WUS for repetition 3 in FIG. 10F.
  • FIGS. 11A-11C and 11D-11F The same applies to FIGS. 11A-11C and 11D-11F.
  • the capability to support LP-WUS reception may be transmitted from the terminal 20 to the base station 10.
  • the capability may be at least one of the following:
  • Ability to support LP-WUS reception with overlaid OFDM sequences Ability to support LP-WUS reception using overlaid OFDM sequences that do not carry information. Ability to support LP-WUS reception using overlaid OFDM sequences that carry information. Ability to support LP-WUS reception using overlaid OFDM sequences that carry some of the information bits of the LP-WUS. Ability to support LP-WUS reception using overlaid OFDM sequences that carry all of the information bits of the LP-WUS. Ability to support LP-WUS reception using overlaid OFDM sequences with repetition.
  • the base station 10 and the terminal 20 include functions for implementing the above-described embodiments. However, the base station 10 and the terminal 20 may each include only a part of the functions of the embodiments.
  • Fig. 12 is a diagram showing an example of the functional configuration of the base station 10 in this embodiment.
  • the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140.
  • the functional configuration shown in Fig. 12 is merely an example.
  • the names of the functional divisions and functional units may be any names as long as they can execute the operations according to this embodiment.
  • the setting unit 130 stores pre-set setting information and various setting information to be sent to the terminal 20.
  • the setting information includes, for example, information related to measurements of low-power signals.
  • Fig. 13 is a diagram showing an example of the functional configuration of the terminal 20 in this embodiment.
  • the terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240.
  • the functional configuration shown in Fig. 13 is merely an example. As long as the operations according to this embodiment can be executed, the names of the functional divisions and functional units may be any.
  • the transmitting unit 210 and the receiving unit 220 may be collectively referred to as a communication unit.
  • the transmitter 210 creates a transmission signal from the transmission data and transmits the transmission signal wirelessly.
  • the transmitter 210 also transmits capability information related to the low-power wake-up signal to the base station 10.
  • the receiver 220 receives various signals wirelessly and acquires higher-layer signals from the received physical layer signals.
  • the receiver 220 also has the function of receiving PSS, SSS, PBCH, DL/UL/SL control signals, etc. transmitted from the base station 10.
  • the receiver 220 also receives paging notification information and configuration information, instructions, and notifications related to the low-power wake-up signal from the base station 10.
  • the receiver 220 receives a low-power wake-up signal from the base station 10.
  • the configuration unit 230 stores various configuration information received by the receiver 220 from the base station 10.
  • the configuration unit 230 also stores pre-configured configuration information.
  • the configuration information includes, for example, information related to measurements of low-power signals.
  • each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (e.g., wired, wireless, etc.) and these multiple devices.
  • the functional block may also be realized by combining software with the single device or multiple devices.
  • Functions include, but are not limited to, judgment, determination, assessment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, regard, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment.
  • a functional block (component) that performs transmission functions is called a transmitting unit or transmitter.
  • transmitting unit or transmitter As mentioned above, there are no particular limitations on how these functions are implemented.
  • the base station 10, terminal 20, etc. in one embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure.
  • Figure 14 is a diagram showing an example of the hardware configuration of the base station 10 and terminal 20 in one embodiment of the present disclosure.
  • the above-mentioned base station 10 and terminal 20 may be 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, etc.
  • the term "apparatus" can be interpreted as a circuit, device, unit, etc.
  • the hardware configuration of the base station 10 and terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured to exclude some of the devices.
  • the functions of the base station 10 and terminal 20 are realized by loading specific software (programs) onto hardware such as the processor 1001 and storage device 1002, causing the processor 1001 to perform calculations, control communications via the communication device 1004, and control at least one of the reading and writing of data from and to the storage device 1002 and auxiliary storage device 1003.
  • the processor 1001 for example, runs an operating system to control the entire computer.
  • the processor 1001 may be configured as a central processing unit (CPU) that includes an interface with peripheral devices, a control unit, an arithmetic unit, registers, etc.
  • CPU central processing unit
  • control unit 140, control unit 240, etc. may be realized by the processor 1001.
  • the processor 1001 reads programs (program code), software modules, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002, and executes various processes in accordance with these.
  • the programs used are those that cause a computer to execute at least some of the operations described in the above-mentioned embodiments.
  • the control unit 140 of the base station 10 shown in FIG. 12 may be stored in the storage device 1002 and implemented by a control program running on the processor 1001.
  • the control unit 240 of the terminal 20 shown in FIG. 13 may be stored in the storage device 1002 and implemented by a control program running on the processor 1001.
  • While the various processes described above have been described as being executed by a single processor 1001, they may also be executed simultaneously or sequentially by two or more processors 1001.
  • the processor 1001 may be implemented on one or more chips.
  • the programs may also be transmitted from a network via a telecommunications line.
  • the storage device 1002 is a computer-readable recording medium and may be composed of, for example, at least one of a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), a RAM (Random Access Memory), etc.
  • the storage device 1002 may also be called a register, a cache, a main memory, etc.
  • the storage device 1002 can store executable programs (program code), software modules, etc. for implementing a communication method according to one embodiment of the present disclosure.
  • Auxiliary storage device 1003 is a computer-readable recording medium, and may be composed of at least one of, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk), a smart card, flash memory (e.g., a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, etc.
  • the above-mentioned storage medium may be, for example, a database, a server, or other suitable medium that includes at least one of storage device 1002 and auxiliary 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 referred to as a network device, network controller, network card, or communication module, for example.
  • the communication device 1004 may be configured to include high-frequency switches, duplexers, filters, frequency synthesizers, etc. to implement at least one of frequency division duplex (FDD) and time division duplex (TDD).
  • FDD frequency division duplex
  • TDD time division duplex
  • the transmitting/receiving antenna, amplifier unit, transmitting/receiving unit, transmission path interface, etc. may be implemented by the communication device 1004.
  • the transmitting/receiving unit may be implemented as a physically or logically separated transmitting unit and receiving unit.
  • the input device 1005 is an input device (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts input from the outside.
  • the output device 1006 is an output device (e.g., a display, speaker, LED lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one device (e.g., 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 each device.
  • the base station 10 and the terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized by this hardware.
  • the processor 1001 may be implemented using at least one of these pieces of hardware.
  • the drive unit 2002 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor.
  • the steering unit 2003 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels and 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, memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals are input to the electronic control unit 2010 from various sensors 2021 to 2029 provided on the vehicle 2001.
  • the electronic control unit 2010 may also be called an ECU (Electronic Control Unit).
  • Signals from the various sensors 2021-2029 include a current signal from a current sensor 2021 that senses the motor current, a front or rear wheel rotation speed signal acquired by a rotation speed sensor 2022, a front or rear wheel air pressure signal acquired by an air pressure sensor 2023, a vehicle speed signal acquired by a vehicle speed sensor 2024, an acceleration signal acquired by an acceleration sensor 2025, an accelerator pedal depression amount signal acquired by an accelerator pedal sensor 2029, a brake pedal depression amount signal acquired by a brake pedal sensor 2026, a shift lever operation signal acquired by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by an object detection sensor 2028.
  • the information service unit 2012 is composed of various devices, such as a car navigation system, audio system, speakers, television, and radio, for providing (outputting) various types of information, such as driving information, traffic information, and entertainment information, as well as one or more ECUs that control these devices.
  • the information service unit 2012 uses information obtained from external devices via the communication module 2013, etc., to provide various types of multimedia information and multimedia services to the occupants of the vehicle 2001.
  • the information service unit 2012 may include input devices that accept input from the outside (e.g., a keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.), and may also include output devices that output to the outside (e.g., a display, speaker, LED lamp, touch panel, etc.).
  • 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 external devices. For example, it sends and receives various information to and from external devices via wireless communication.
  • the communication module 2013 may be located either inside or outside the electronic control unit 2010.
  • the external device may be, for example, a base station, a mobile station, etc.
  • the communications module 2013 may transmit, via wireless communication, to an external device at least one of the following: signals from the various sensors 2021-2028 input to the electronic control unit 2010; information obtained based on these signals; and information based on input from the outside (user) obtained via the information service unit 2012.
  • the electronic control unit 2010, the various sensors 2021-2028, the information service unit 2012, etc. may also be referred to as input units that accept input.
  • the PUSCH transmitted by the communications module 2013 may include information based on the above input.
  • the overlaid sequence is a sequence that carries a portion of the information bits of the signal; the predetermined symbol is an OOK (On-Off-Keying) symbol, 2.
  • the control unit estimates a total number of information bits of the signal based on a first predetermined number of the OOK symbols and the number of information bits carried by the overlaid sequence, as shown in the figure below.
  • the overlaid sequence is a sequence that carries all of the information bits of the signal; 2.
  • the control unit estimates a total number of information bits of the signal based on the overlaid sequence.
  • (Section 5) a transmitter for transmitting a signal including the sequence overlaid on a predetermined symbol to a terminal; a control unit that includes in the signal a sequence that carries information bits of the signal or a sequence that does not carry the information bits.
  • (Section 6) A communication method performed by a terminal, comprising: receiving a signal from a base station including a sequence overlaid on a predetermined symbol; a control step of assuming that the overlaid sequence is a sequence carrying information bits of the signal or a sequence not carrying said information bits, A communication method, wherein the receiving step receives the signal based on the assumption.
  • the base station 10 and terminal 20 have been described using functional block diagrams, but such devices may be realized by hardware, software, or a combination thereof.
  • the software operated by the processor of the base station 10 according to this embodiment and the software operated by the processor of the terminal 20 according to this embodiment may each be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.
  • the notification of information is not limited to the aspects/embodiments described in this disclosure, and may be performed using other methods.
  • the notification of information may be performed by 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), broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination of these.
  • RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc.
  • Each aspect/embodiment described in this disclosure may be applied to at least one of systems utilizing LTE (Long Term Evolution), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), FRA (Future Radio Access), NR (New Radio), 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), or other suitable systems, and next generation systems enhanced based on these. Additionally, multiple systems may be combined (for example, a combination of at least one of LTE and LTE-A with 5G).
  • certain operations described as being performed by the base station 10 may also be performed by its upper node in some cases.
  • a network consisting of one or more network nodes having a base station 10 it is clear that various operations performed for communication with the terminal 20 may be performed by at least one of the base station 10 and other network nodes other than the base station 10 (such as, but not limited to, an MME or S-GW). While the above example illustrates a case where there is one other network node other than the base station 10, the other network node may also be a combination of multiple other network nodes (for example, an MME and an S-GW).
  • the information, signals, etc. described in this disclosure may be output from a higher layer (or lower layer) to a lower layer (or higher layer). They may also be input/output via multiple network nodes.
  • Input and output information may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information may be overwritten, updated, or added to. Output information may be deleted. Input information may be sent to another device.
  • the determination may be made based on a value represented by one bit (0 or 1), a Boolean value (true or false), or a numerical comparison (e.g., comparison with a predetermined value).
  • Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
  • software, instructions, information, etc. may be transmitted and received via a transmission medium.
  • a transmission medium such as coaxial cable, fiber optic cable, twisted pair, or Digital Subscriber Line (DSL)
  • wired technology such as coaxial cable, fiber optic cable, twisted pair, or Digital Subscriber Line (DSL)
  • wireless technology such as infrared or microwave
  • 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 may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.
  • a channel and a symbol may be a signal (signaling).
  • a signal may be a message.
  • a component carrier CC may be called a carrier frequency, a cell, a frequency carrier, etc.
  • system and “network” are used interchangeably.
  • radio resources may be indicated by an index.
  • the names used for the parameters described above are not intended to be limiting in any way. Furthermore, the mathematical formulas using these parameters may differ from those explicitly disclosed in this disclosure.
  • the various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.
  • MS Mobile Station
  • UE User Equipment
  • judgment and “decision” can include regarding actions such as resolving, selecting, choosing, establishing, and comparing as having been “judgment” or “decision.” In other words, “judgment” and “decision” can include regarding some action as having been “judgment” or “decision.” Furthermore, “judgment (decision)” can be interpreted as “assuming,” “expecting,” “considering,” etc.
  • the reference signal may also be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.
  • the phrase “based on” does not mean “based only on,” unless expressly stated otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”
  • a slot may consist of one or more symbols in the time domain (such as OFDM (Orthogonal Frequency Division Multiplexing) symbols or SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols).
  • a slot may also be a time unit based on numerology.
  • a slot may include multiple minislots. Each minislot may consist of one or more symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot.
  • a PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A.
  • a PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.
  • Radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals. Other names corresponding to radio frame, subframe, slot, minislot, and symbol may also be used.
  • one subframe may be called a transmission time interval (TTI)
  • TTI transmission time interval
  • multiple consecutive subframes may be called a TTI
  • one slot or one minislot may be called a TTI.
  • at least one of the subframe and the TTI may be a subframe (1 ms) as in existing LTE, or a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms.
  • the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.
  • the TTI may be a transmission time unit for a channel-encoded data packet (transport block), code block, code word, etc., or may be a processing unit for scheduling, link adaptation, etc.
  • the time interval e.g., number of symbols
  • the time interval to which a transport block, code block, code word, etc. is actually mapped may be shorter than the TTI.
  • one or more RBs may also be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.
  • PRB physical resource block
  • SCG sub-carrier group
  • REG resource element group
  • PRB pair an RB pair, etc.
  • a bandwidth part (which may also be referred to as a partial bandwidth) may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier.
  • common RBs may be identified by the index of the RB relative to a common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • the structures of the radio frames, subframes, slots, minislots, and symbols described above 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, the number of subcarriers included in an RB, as well as the number of symbols in a TTI, symbol length, and cyclic prefix (CP) length can be changed in various ways.
  • notification of specified information is not limited to being done explicitly, but may also be done implicitly (e.g., not notifying the specified information).
  • Base station 110 Transmitter 120 Receiver 130 Setting unit 140 Control unit 20 Terminal 210 Transmitter 220 Receiver 230 Setting unit 240 Control unit 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device 2001 Vehicle 2002 Drive unit 2003 Steering unit 2004 Accelerator pedal 2005 Brake pedal 2006 Shift lever 2007 Front wheels 2008 Rear wheels 2009 Axle 2010 Electronic control unit 2012 Information service unit 2013 Communication module 2021 Current sensor 2022 Rotation speed sensor 2023 Air pressure sensor 2024 Vehicle speed sensor 2025 Acceleration sensor 2026 Brake pedal sensor 2027 Shift lever sensor 2028 Object detection sensor 2029 Accelerator pedal sensor 2030: Driving assistance system unit 2031: Microprocessor 2032: Memory (ROM, RAM) 2033 Communication port (IO port)

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

Abstract

Ce terminal comprend : une unité de réception qui reçoit, en provenance d'une station de base, un signal comprenant une séquence superposée à un symbole prédéterminé ; et une unité de commande qui détermine si la séquence superposée est une séquence qui transporte un bit d'information du signal ou une séquence dans laquelle le bit d'information n'est pas transporté. L'unité de réception reçoit le signal sur la base de cette détermination.
PCT/JP2024/014191 2024-04-05 2024-04-05 Terminal, station de base et procédé de communication Pending WO2025210928A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/JP2024/014191 WO2025210928A1 (fr) 2024-04-05 2024-04-05 Terminal, station de base et procédé de communication

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Application Number Priority Date Filing Date Title
PCT/JP2024/014191 WO2025210928A1 (fr) 2024-04-05 2024-04-05 Terminal, station de base et procédé de communication

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WO2025210928A1 true WO2025210928A1 (fr) 2025-10-09

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Country Link
WO (1) WO2025210928A1 (fr)

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
HONGCHAO LI, PANASONIC: "Discussion on the LP-WUS and LP-SS design", 3GPP DRAFT; R1-2400904; TYPE DISCUSSION; NR_LPWUS-CORE, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), vol. RAN WG1, 19 February 2024 (2024-02-19), FR, XP052568677 *
PATRICK MERIAS, MODERATOR (VIVO): "Summary of discussions on LP-WUS and LP-SS design", 3GPP DRAFT; R1-2401665; TYPE DISCUSSION; NR_LPWUS-CORE, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), vol. RAN WG1, 27 February 2024 (2024-02-27), FR, XP052577487 *

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