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WO2025224922A1 - Terminal et procédé de détection - Google Patents

Terminal et procédé de détection

Info

Publication number
WO2025224922A1
WO2025224922A1 PCT/JP2024/016247 JP2024016247W WO2025224922A1 WO 2025224922 A1 WO2025224922 A1 WO 2025224922A1 JP 2024016247 W JP2024016247 W JP 2024016247W WO 2025224922 A1 WO2025224922 A1 WO 2025224922A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
base station
sensing
information
unit
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/JP2024/016247
Other languages
English (en)
Japanese (ja)
Inventor
立樹 大川
翔貴 井上
桂 安藤
佑太 寒河江
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/JP2024/016247 priority Critical patent/WO2025224922A1/fr
Publication of WO2025224922A1 publication Critical patent/WO2025224922A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H04W76/38—Connection release triggered by timers
    • 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 a sensing method in a wireless communication system.
  • NR New Radio
  • LTE Long Term Evolution
  • 3GPP registered trademark
  • ISAC Integrated Sensing and Communication
  • 3GPP TS 38.322 V18.0.0 (2023-12) 3GPP TS 38.331 V18.0.0 (2023-12)
  • the terminal is a receiver that receives sensing signals
  • the terminal will be unable to report sensing results to the base station.
  • the terminal will waste power on monitoring sensing signals, etc.
  • the present invention was made in consideration of the above points, and aims to provide technology for reducing unnecessary power consumption in terminals that receive sensing signals.
  • a receiving unit that receives a sensing signal; and a control unit that stops monitoring the sensing signal and stops reporting the sensing result when a predetermined trigger is detected.
  • the disclosed technology provides a technique for reducing unnecessary power consumption in a terminal that receives a sensing signal.
  • FIG. 1 is a diagram illustrating a wireless communication system according to an embodiment of the present invention.
  • 1 is a diagram illustrating a wireless communication system according to an embodiment of the present invention.
  • FIG. 1 illustrates an example of an ISAC implementation on a 3GPP system.
  • FIG. 1 illustrates an example of an architecture for performing sensing.
  • FIG. 1 illustrates an example of an architecture for performing sensing.
  • FIG. 1 illustrates an example of an architecture for performing sensing.
  • FIG. 1 is a diagram for explaining a problem.
  • FIG. 1 is a diagram for explaining a problem.
  • 1 is a flowchart of embodiment 1-1. These are existing specifications that are referenced in embodiments 1 to 3. These are existing specifications that are referenced in embodiments 1 to 3. 10 is a flowchart of embodiment 2-1.
  • FIG. 1 is a diagram illustrating a wireless communication system according to an embodiment of the present invention.
  • FIG. 1 illustrates an example of an ISAC implementation on a 3GPP system.
  • FIG. 2 is a diagram illustrating an example of a functional configuration of a base station according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating an example of a functional configuration of a terminal according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating an example of a hardware configuration of a base station or a terminal according to an embodiment of the present invention.
  • 1 is a diagram showing an example of a configuration of a vehicle according to an embodiment of the present invention;
  • existing technology is used as appropriate.
  • existing technology may be, for example, existing LTE or existing NR, but is not limited to existing LTE or NR.
  • terms used in existing LTE or NR such as 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), and PUSCH (Physical Uplink Shared Channel), may be used. This is for convenience of description, and similar signals, functions, etc. may be called by other names.
  • the duplex method may be a TDD (Time Division Duplex) method, an FDD (Frequency Division Duplex) method, or another method (for example, Flexible Duplex, etc.).
  • "configuring" radio parameters etc. may mean that predetermined values are pre-configured, or that radio parameters notified from the base station 10 or terminal 20 are configured.
  • Fig. 1 is a diagram showing a configuration example (1) of a wireless communication system according to an embodiment of the present invention.
  • the wireless communication system according to the embodiment of the present invention includes a base station 10 and a terminal 20.
  • Fig. 1 shows one base station 10 and one terminal 20, this is an example, and there may be a plurality of each.
  • the base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20.
  • the physical resources of the wireless signal are defined in the time domain and the frequency domain, and the time domain may be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks.
  • the TTI Transmission Time Interval
  • the time domain may be a slot, or the TTI may be a subframe.
  • the base station 10 transmits synchronization signals and system information to the terminal 20.
  • the synchronization signals are, for example, NR-PSS and NR-SSS.
  • the system information is transmitted, for example, via NR-PBCH, and is also called broadcast information.
  • the synchronization signals and system information may also be called SSB (SS/PBCH block).
  • the base station 10 transmits control signals or data to the terminal 20 via DL (Downlink) and receives control signals or data from the terminal 20 via UL (Uplink).
  • Both the base station 10 and the terminal 20 are capable of transmitting and receiving signals by performing beamforming.
  • both the base station 10 and the terminal 20 are capable of applying MIMO (Multiple Input Multiple Output) communication to the DL or UL.
  • MIMO Multiple Input Multiple Output
  • both the base station 10 and the terminal 20 may communicate via a secondary cell (SCell: Secondary Cell) and a primary cell (PCell: Primary Cell) using CA (Carrier Aggregation).
  • SCell Secondary Cell
  • PCell Primary Cell
  • CA Carrier Aggregation
  • the terminal 20 may communicate via the primary cell of the base station 10 and a primary secondary cell group cell (PSCell: Primary SCG Cell) of another base station 10 using DC (Dual Connectivity).
  • DC Dual Connectivity
  • the terminal 20 is a communication device equipped with wireless communication functions, such as a smartphone, mobile phone, tablet, wearable device, or M2M (Machine-to-Machine) communication module. As shown in FIG. 1, the terminal 20 receives control signals or data from the base station 10 via DL and transmits control signals or data to the base station 10 via UL, thereby utilizing various communication services provided by the wireless communication system. The terminal 20 also receives various reference signals transmitted from the base station 10 and measures propagation path quality based on the reception results of the reference signals.
  • the terminal 20 may also be referred to as a UE, and the base station 10 as a gNB.
  • FIG. 2 is a diagram illustrating an example (2) of a wireless communication system in an embodiment of the present invention.
  • Figure 2 shows an example of the configuration of a wireless communication system when DC (Dual connectivity) is implemented.
  • base station 10A which serves as the MN (Master Node)
  • base station 10B which serves as the SN (Secondary Node).
  • Base station 10A and base station 10B are each connected to a core network.
  • Terminal 20 can communicate with both base station 10A and base station 10B.
  • the cell group provided by base station 10A which is an MN
  • the MCG Master Cell Group
  • the cell group provided by base station 10B which is an SN
  • the SCG Secondary Cell Group
  • the MCG consists of one PCell and one or more SCells
  • the SCG consists of one PSCell (Primary SCG Cell) and one or more SCells.
  • the processing operations in this embodiment may be performed using the system configuration shown in FIG. 1, the system configuration shown in FIG. 2, or any other system configuration.
  • Both the base station 10 and the terminal 20 can function as both a transmitting node and a receiving node. Specific use cases include, for example, intruder detection in a smart home, drone flight position tracking, and object detection on public roads.
  • the 5G network shall be able to activate, configure, and deactivate 5G wireless sensing based on parameters such as location and network conditions (e.g., network load).” That is, the 5G network can activate/configure/deactivate sensing depending on the situation. Although specific discussion of sensing deactivation has not been conducted, activation/configure/deactivation may be performed at a granularity such as per terminal 10/base station 20 or per radio resource.
  • This embodiment is directed to a case where the transmitter or receiver is the terminal 10. Examples of sensing patterns in a case where the transmitter or receiver is the terminal 10 are shown in Fig. 4 to Fig. 6. Fig. 4 to Fig. 6 show examples in which the sensing target is an object 30 (drone, etc.).
  • the terminal 20 receives a sensing signal reflected from the object 30.
  • the terminal 20 transmits a sensing signal.
  • the terminal 20A transmits a sensing signal
  • the terminal 20B receives the sensing signal reflected from the object 30.
  • Case 1 When the terminal 20 is a receiver As shown in Figures 7(a) and (b), in a situation where the terminal 20 receives a sensing signal reflected from an object 30, the terminal 20 goes outside the coverage of the base station 10.
  • the terminal 20 will report the configured sensing results to the base station 10. However, as shown in Figure 7(b), in this case, the terminal 20 cannot report the sensing results to the base station 10.
  • the base station 10 can perform sensing deactivation when the terminal 20 goes out of coverage, but cannot send a deactivation instruction to the terminal 20. As a result, the terminal 20 cannot stop monitoring the configured radio resources, saving the sensing results, or reporting the sensing results. Therefore, the terminal 20 wastes power.
  • the terminal 20 is usually assumed to continue transmitting the configured sensing signal. However, in this case, there is a possibility that the sensing signal will reach the base station 10 ((b) Case 2-1), or that it will not reach the base station 10 ((c) Case 2-2).
  • the base station 10 can perform sensing deactivation, but cannot send a deactivation instruction to the terminal 20. As a result, the terminal 20 cannot stop transmitting sensing signals using the configured wireless resources. Therefore, the terminal 20 wastes power.
  • Embodiments 1 and 2 will be described below as technologies for solving the above problems.
  • Embodiment 1 corresponds to the above case 1, and is an embodiment in which the terminal 20 functions as a receiver.
  • Embodiment 2 corresponds to the above case 2, and is an embodiment in which the terminal 20 functions as a transmitter.
  • Embodiment 1 includes embodiments 1-1 to 1-3, and embodiment 2 includes embodiments 2-1 to 2-3. Each embodiment will be described below.
  • the "NW (network)" that performs settings on the terminal 20 may be the base station 10, or a network node other than the base station 10.
  • a timer is introduced to automatically stop receiving the sensing signal.
  • the timer is as follows.
  • the network sets a new timer for the terminal 20 with the following characteristics (trigger for activation/update, action upon expiration). Note that the timer may be set for each terminal 20 or for each radio resource. The terminal 20 may also store the timer in advance without being set by the network.
  • the start trigger is when the NW sets sensing for the terminal 20. That is, when the terminal 20 receives a setting from the NW so that the terminal 20 receives a sensing signal using a specific wireless resource, the terminal 20 starts the timer. Note that the start trigger is not limited to this, and for example, the terminal 20 may start the timer when it receives a signal from the NW instructing the terminal 20 to start the timer.
  • the terminal 20 updates the timer (returns it to its initial value) when either (1) or (2) below occurs.
  • the terminal 20 may use only either (1) or (2) as the trigger for updating, or may use both (1) and (2) as the trigger for updating.
  • the terminal 20 deactivates sensing. As a result of the deactivation, the following operation (2) may be performed.
  • Terminal 20 stops sensing. More specifically, terminal 20 performs the following operation (2-1) or (2-2).
  • the terminal 20 releases the set radio resource for the sensing signal, stops monitoring the sensing signal, and stops reporting the sensing result.
  • the terminal 20 releases the set radio resource for the sensing signal, stops monitoring the sensing signal, discards the sensing result that it has stored, and stops reporting the sensing result.
  • ⁇ Processing flow> An example of the processing procedure of the terminal 20 will be described along the procedure of the flowchart shown in Fig. 9.
  • the terminal 20 is set to perform sensing from the NW.
  • the terminal 20 starts a timer. When the timer expires (Yes in S103), in S104, the terminal 20 releases the radio resources, ends monitoring of the sensing signal, and discards the results. In addition, the terminal 20 stops reporting the sensing results.
  • the terminal 20 performs RRC reconfiguration or receives a new MAC CE. In S106, the terminal 20 updates the timer.
  • a threshold value of channel quality (reception quality) for automatically stopping sensing is introduced.
  • the threshold value may be defined in the specifications or may be set by the base station 10 to the terminal 20 by, for example, RRC configuration.
  • the terminal 20 When the terminal 20 detects that the reception quality of a received signal (for example, a reference signal emitted by the base station 10, such as a CSI RS) has fallen below a threshold, it performs the following operation (1) or (2).
  • a received signal for example, a reference signal emitted by the base station 10, such as a CSI RS
  • reception quality has a broad meaning and includes received power.
  • Reception quality is, for example, RSRP, RSRQ, etc.
  • the terminal 20 deactivates sensing. As a result of the deactivation, the following operation (2) may be performed.
  • Terminal 20 stops sensing. More specifically, terminal 20 performs the following operation (2-1) or (2-2).
  • the terminal 20 releases the set radio resource for the sensing signal, stops monitoring the sensing signal, and stops reporting the sensing result.
  • the terminal 20 releases the set radio resource for the sensing signal, stops monitoring the sensing signal, discards the sensing result that it has stored, and stops reporting the sensing result.
  • sensing is automatically stopped when the number of RLC retransmissions exceeds the limit. More specifically, this is as follows.
  • terminal 20 When terminal 20 detects that the number of ARQ retransmissions in the RLC (Radio Link Control) layer has reached its upper limit, it performs the following operation (1) or (2).
  • RLC Radio Link Control
  • existing specifications TS38.322, TS38.331 describe the operation of terminal 20 when it detects that the number of ARQ retransmissions in the RLC layer has reached its upper limit (underlined portions in Figures 10 and 11), and terminal 20 may perform the following operation (1) or (2) in addition to the operation specified in the existing specifications.
  • the terminal 20 deactivates sensing. As a result of the deactivation, the following operation (2) may be performed.
  • Terminal 20 stops sensing. More specifically, terminal 20 performs the following operation (2-1) or (2-2).
  • the terminal 20 releases the set radio resource for the sensing signal, stops monitoring the sensing signal, and stops reporting the sensing result.
  • the terminal 20 releases the set radio resource for the sensing signal, stops monitoring the sensing signal, discards the sensing result that it has stored, and stops reporting the sensing result.
  • the terminal 20 when the terminal 20 is outside the coverage of the base station 10, the terminal 20 can automatically stop monitoring the sensing signal. This makes it possible to reduce unnecessary power consumption of the terminal 20.
  • a timer is introduced to automatically stop the transmission of the sensing signal.
  • the timer is as follows.
  • the network sets a new timer for the terminal 20 with the following characteristics (trigger for activation/update, action upon expiration). Note that the timer may be set for each terminal 20 or for each radio resource.
  • the terminal 20 may also store the timer in advance without the network setting.
  • the start trigger is when the NW sets sensing for the terminal 20. That is, when the terminal 20 receives a setting from the NW so that the terminal 20 transmits or receives a sensing signal using a specific wireless resource, the terminal 20 starts the timer. Note that the start trigger is not limited to this, and for example, the terminal 20 may start the timer when it receives a signal from the NW instructing the terminal 20 to start the timer.
  • the terminal 20 updates the timer (returns it to its initial value) when either (1) or (2) below occurs.
  • the terminal 20 may use only either (1) or (2) as the trigger for updating, or may use both (1) and (2) as the trigger for updating.
  • the terminal 20 deactivates sensing. As a result of the deactivation, the following operation (2) may be performed.
  • the terminal 20 stops transmitting the sensing signal. More specifically, the terminal 20 releases the configured wireless resource for the sensing signal and stops transmitting the sensing signal.
  • the terminal 20 performs RRC reconfiguration or receives a new MAC CE.
  • the terminal 20 updates the timer.
  • a threshold value of channel quality (reception quality) for automatically stopping transmission of a sensing signal is introduced.
  • the threshold value may be defined in the specifications or may be set by the base station 10 to the terminal 20 by, for example, RRC configuration.
  • the terminal 20 When the terminal 20 detects that the reception quality of a received signal (for example, a reference signal emitted by the base station 10, such as a CSI RS) has fallen below a threshold, it performs the following operation (1) or (2).
  • a received signal for example, a reference signal emitted by the base station 10, such as a CSI RS
  • reception quality has a broad meaning and includes received power.
  • Reception quality is, for example, RSRP, RSRQ, etc.
  • the terminal 20 deactivates sensing. As a result of the deactivation, the following operation (2) may be performed.
  • the terminal 20 stops transmitting the sensing signal. More specifically, the terminal 20 releases the configured wireless resource for the sensing signal and stops transmitting the sensing signal.
  • the transmission of the sensing signal is automatically stopped when the number of RLC (Radio Link Control) retransmissions exceeds the limit. More specifically, this is as follows.
  • terminal 20 When terminal 20 detects that the number of ARQ retransmissions in the RLC layer has reached its upper limit, it performs the following operation (1) or (2).
  • existing specifications TS38.322, TS38.331 describe the operation of terminal 20 when it detects that the number of ARQ retransmissions in the RLC layer has reached its upper limit (the underlined parts in Figures 10 and 11 mentioned above), and terminal 20 may perform the following operation (1) or (2) in addition to the operation specified in the existing specifications.
  • the terminal 20 deactivates sensing. As a result of the deactivation, the following operation (2) may be performed.
  • the terminal 20 stops transmitting the sensing signal. More specifically, the terminal 20 releases the configured wireless resource for the sensing signal and stops transmitting the sensing signal.
  • the terminal 20 can automatically stop transmitting a sensing signal when the terminal 20 is outside the coverage of the base station 10. This can reduce unnecessary power consumption of the terminal 20.
  • the threshold value in embodiment 1-2 and the threshold value in embodiment 2-2 may be the same or different. Furthermore, the terminal 20 may use the threshold value set from the NW in embodiment 1-2 in embodiment 2-2 in addition to using it in embodiment 1-2. Furthermore, the terminal 20 may use the threshold value set from the NW in embodiment 2-2 in embodiment 1-2 in addition to using it in embodiment 2-2.
  • invention 2 Two or all of the embodiments 1-1 to 1-3 may be combined within embodiment 1.
  • the terminal 20 may stop monitoring the sensing signal when it detects a trigger in embodiment 1-2 or embodiment 1-3, even before the timer expires.
  • embodiment 2 two or all of embodiments 2-1 to 2-3 may be combined.
  • the terminal 20 may stop transmitting the sensing signal when it detects a trigger for embodiment 2-2 or embodiment 2-3, even before the timer expires.
  • FIG. 13 is a diagram showing an example of the functional configuration of the base station 10.
  • 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. 13 is merely an example. As long as the operations related to the embodiment of the present invention can be performed, the names of the functional divisions and functional units may be any.
  • the transmitting unit 110 and the receiving unit 120 may be collectively referred to as a communication unit.
  • the transmitter 110 has the function of generating signals to be transmitted to the terminal 20 and transmitting these signals wirelessly.
  • the receiver 120 has the function of receiving various signals transmitted from the terminal 20 and obtaining, for example, information of higher layers from the received signals.
  • the transmitter 110 also has the function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, DCI via PDCCH, data via PDSCH, etc. to the terminal 20.
  • the setting unit 130 stores pre-set setting information and various setting information to be sent to the terminal 20 in a storage device provided in the setting unit 130, and reads it from the storage device as needed.
  • the control unit 140 controls the base station 10.
  • the functional units in the control unit 140 related to signal transmission may be included in the transmitting unit 110, and the functional units in the control unit 140 related to signal reception may be included in the receiving unit 120.
  • the transmitting unit 110 may be called a transmitter, and the receiving unit 120 may be called a receiver.
  • Fig. 14 is a diagram showing an example of the functional configuration of the terminal 20.
  • 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. 14 is merely an example. As long as the operations related to the embodiment of the present invention can be performed, 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 receiver 220 receives various signals wirelessly and obtains higher layer signals from the received physical layer signals.
  • the receiver 220 also has the function of receiving NR-PSS, NR-SSS, NR-PBCH, DL/UL/SL control signals, DCI via PDCCH, data via PDSCH, etc. transmitted from the base station 10.
  • the transmitter 210 may transmit a PSCCH (Physical Sidelink Control Channel), a PSSCH (Physical Sidelink Shared Channel), a PSDCH (Physical Sidelink Discovery Channel), a PSBCH (Physical Sidelink Broadcast Channel), etc. to another terminal 20 as D2D communication
  • the receiver 120 may receive a PSCCH, a PSSCH, a PSDCH, a PSBCH, etc. from the other terminal 20.
  • the setting unit 230 stores various setting information received by the receiving unit 220 from the base station 10 or other terminals in a storage device provided in the setting unit 230, and reads it from the storage device as needed.
  • the setting unit 230 also stores setting information that has been set in advance.
  • the control unit 240 controls the terminal 20.
  • ⁇ Appendix 1> (Additional note 1) a receiving unit that receives a sensing signal; and a control unit that stops monitoring the sensing signal and stops reporting the sensing result when a predetermined trigger is detected. (Additional note 2) The terminal according to claim 1, wherein the control unit discards the stored sensing result when the predetermined trigger is detected. (Additional note 3) The terminal according to claim 1, wherein the predetermined trigger is expiration of a timer. (Additional note 4) The terminal according to Supplementary Item 1, wherein the predetermined trigger is that the signal reception quality falls below a threshold. (Additional note 5) The terminal according to Supplementary Item 1, wherein the predetermined trigger is that the number of retransmissions in the RLC layer has reached an upper limit. (Additional note 6) receiving a sensing signal; and a step of stopping monitoring the sensing signal and stopping reporting of the sensing result when a predetermined trigger is detected.
  • any of the configurations described above provide technology for reducing unnecessary power consumption in a terminal receiving a sensing signal.
  • retained sensing results are discarded, making it possible to avoid reporting old sensing results, for example, when entering coverage.
  • a timer is used, making it possible to reliably stop monitoring, etc.
  • reception quality is used, making it possible to make a quick judgment.
  • the number of retransmissions in the RLC layer is used, making it possible to accurately detect link degradation (e.g., going out of coverage).
  • ⁇ Appendix 2> (Additional note 1) a transmitter that transmits a sensing signal; a control unit that stops transmission of the sensing signal when a predetermined trigger is detected. (Additional note 2) The terminal according to claim 1, wherein the predetermined trigger is expiration of a timer. (Additional note 3) The terminal according to Supplementary Item 1, wherein the predetermined trigger is that the signal reception quality falls below a threshold. (Additional note 4) The terminal according to Supplementary Item 1, wherein the predetermined trigger is that the number of retransmissions in the RLC layer has reached an upper limit. (Additional note 5) transmitting a sensing signal; and stopping transmission of the sensing signal when a predetermined trigger is detected.
  • Supplementary item 2 uses a timer, ensuring that the transmission of the sensing signal can be stopped.
  • Supplementary item 3 uses reception quality, allowing for quick judgments.
  • Supplementary item 4 uses the number of retransmissions in the RLC layer, enabling link degradation (e.g., going out of coverage) to be detected with high accuracy.
  • 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 the single device or multiple devices with software.
  • Functions include, but are not limited to, judgment, determination, assessment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, 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 15 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 also loads 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-described embodiments.
  • the control unit 140 of the base station 10 shown in FIG. 13 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. 14 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 telecommunications lines.
  • 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.
  • FIG. 16 shows an example configuration of a vehicle 2001.
  • the 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, various sensors 2021-2029, an information service unit 2012, and a communication module 2013.
  • the terminal 20 or base station 10 according to each aspect/embodiment described in this disclosure may be applied to a communication device mounted on the vehicle 2001, and may be applied to the communication module 2013, for example.
  • 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 and rear wheel rotation speed signal obtained by a rotation speed sensor 2022, a front and rear wheel air pressure signal obtained by an air pressure sensor 2023, a vehicle speed signal obtained by a 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, a shift lever operation signal obtained by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained 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 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, switches, buttons, sensors, 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 driving assistance system unit 2030 is composed of various devices that provide functions to prevent accidents and reduce the driver's driving burden, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g., GNSS, etc.), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps, etc.), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices.
  • the driving assistance system unit 2030 also transmits and receives various information via the communication module 2013 to realize driving assistance functions or autonomous driving functions.
  • the communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via the communication port.
  • the communication module 2013 transmits and receives data via the communication port 2033 between the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021-29, all of which are provided on the vehicle 2001.
  • 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 communication module 2013 can perform the operations described in embodiments 1 and 2.
  • 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 communication module 2013 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from external devices and displays it on the information service unit 2012 provided in the vehicle 2001.
  • the information service unit 2012 may also be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH (or data/information decoded from the PDSCH) received by the communication module 2013).
  • the communication module 2013 also stores the various information received from external devices in memory 2032 that can be used by the microprocessor 2031. Based on the information stored in memory 2032, the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021-2029, etc. provided in the vehicle 2001.
  • the operations of multiple functional units may be performed by a single physical component, or the operations of a single functional unit may be performed by multiple physical components.
  • the order of processing steps described in the embodiments may be reversed as long as there is no contradiction.
  • the base station 10 and terminal 20 have been described using functional block diagrams, but such devices may be implemented in hardware, software, or a combination thereof.
  • the software operated by the processor of the base station 10 in accordance with an embodiment of the present invention and the software operated by the processor of the terminal 20 in accordance with an embodiment of the present invention 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 the present 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.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution
  • SUPER 3G IMT-Advanced
  • 4G 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • 6G 6th generation mobile communication system
  • xG xG (x is, for example, an integer or decimal number)
  • FRA Full Radio Access Network
  • the present invention may be applied to at least one of systems using IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20 (Ultra-Wideband), Bluetooth (registered trademark), CDMA2000, NR (new 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 (registere
  • 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.
  • Base station BS
  • radio base station base station
  • base station fixed station
  • NodeB eNodeB
  • gNodeB gNodeB
  • Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.
  • a base station can accommodate one or more (e.g., three) cells.
  • a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, and each smaller area can also be provided with communication services by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head)).
  • RRH Remote Radio Head
  • the terms "cell” or “sector” refer to part or all of the coverage area of at least one of the base station and base station subsystem that provides communication services within this coverage area.
  • a base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control or operate based on the information.
  • MS Mobile Station
  • UE User Equipment
  • a mobile station may also be referred to 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 terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.
  • At least one of the base station and the mobile station may be referred to as a transmitting device, a receiving device, a communication device, etc.
  • At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, etc.
  • the mobile object is a movable object, and may move at any speed. Naturally, this also includes cases where the mobile object is stationary.
  • the mobile object examples include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones (registered trademark), multicopters, quadcopters, balloons, and objects mounted thereon.
  • the mobile object may also be a mobile object that moves autonomously based on an operation command.
  • the mobile object may also be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned).
  • at least one of the base station and the mobile station may be a device that does not necessarily move during communication operations.
  • at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be read as a user terminal.
  • the aspects/embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple terminals 20 (which may be called, for example, D2D (Device-to-Device) or V2X (Vehicle-to-Everything)).
  • the terminals 20 may be configured to have the functions possessed by the base station 10 described above.
  • terms such as “uplink” and “downlink” may be read as terms corresponding to communication between terminals (for example, "side”).
  • terms such as uplink channel and downlink channel may be read as side channel.
  • the user terminal in this disclosure may be interpreted as a base station.
  • the base station may be configured to have the functions possessed by the user terminal described above.
  • determining may encompass a wide variety of actions.
  • Determining and “determining” may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (e.g., searching a table, database, or other data structure), and ascertaining something that is considered to be a “determination.”
  • Determining and “determining” may also include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and so on.
  • 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.
  • connection refers to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled” to each other.
  • the coupling or connection between elements may be physical, logical, or a combination thereof.
  • “connected” may be read as "access.”
  • two elements may be considered to be “connected” or “coupled” to each other using at least one of one or more wires, cables, and printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and optical (both visible and invisible) range, as some non-limiting and non-exhaustive examples.
  • 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.”
  • any reference to an element using a designation such as "first,” “second,” etc. 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, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.
  • a radio frame may be composed of one or more frames in the time domain. Each of the one or more frames in the time domain may be called a subframe. A subframe may further be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.
  • Numerology may be a communication parameter that applies to at least one of the transmission and reception of a signal or channel. Numerology may indicate, for example, at least one of the following: subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering operations performed by the transmitter/receiver in the frequency domain, and specific windowing operations performed by the transmitter/receiver in the time domain.
  • SCS subcarrier spacing
  • TTI transmission time interval
  • radio frame structure specific filtering operations performed by the transmitter/receiver in the frequency domain
  • specific windowing operations performed by the transmitter/receiver in the time domain specific windowing operations performed by the transmitter/receiver in the time domain.
  • 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), multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI.
  • TTI transmission time interval
  • the subframe and the TTI may be a subframe (1 ms) as in existing LTE, 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.
  • One slot may also be called a unit time. The unit time may differ for each cell depending on the numerology.
  • TTI refers to, for example, the smallest time unit for scheduling in wireless communication.
  • a base station performs scheduling to allocate wireless resources (such as frequency bandwidth and transmission power that can be used by each terminal 20) to each terminal 20 in TTI units.
  • wireless resources such as frequency bandwidth and transmission power that can be used by each terminal 20
  • TTI is not limited to this.
  • 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 slot or one minislot is called a TTI
  • one or more TTIs may be the smallest time unit for scheduling.
  • the number of slots (minislots) that make up the smallest time unit for scheduling may be controlled.
  • a TTI with a time length of 1 ms may be called a regular TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc.
  • a TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial TTI (partial or fractional TTI), shortened subframe, short subframe, minislot, subslot, slot, etc.
  • a long TTI (e.g., a normal TTI, subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms
  • a short TTI e.g., a shortened TTI, etc.
  • a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain.
  • the number of subcarriers included in an RB may be the same regardless of numerology, and may be, for example, 12.
  • the number of subcarriers included in an RB may also be determined based on numerology.
  • the time domain of an RB may include one or more symbols and may be one slot, one minislot, one subframe, or one TTI in length.
  • One TTI, one subframe, etc. may each be composed of one or more resource blocks.
  • 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 resource block may be composed of one or more resource elements (REs).
  • REs resource elements
  • one RE may be a radio resource region of one subcarrier and one symbol.
  • 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.
  • the common RBs may be identified by the index of the RB relative to the common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • BWPs 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 more BWPs may be configured within one carrier for a terminal 20.
  • At least one of the configured BWPs may be active, and the terminal 20 may not be expected to transmit or receive a specific signal/channel outside the active BWP.
  • BWP bit stream
  • 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.
  • a and B are different may mean “A and B are different from each other.” Note that this term may also mean “A and B are each different from C.” Terms such as “separate” and “combined” may also be interpreted in the same way as “different.”
  • 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

L'invention concerne un terminal équipé : d'une unité de réception qui reçoit un signal de détection ; et d'une unité de commande qui arrête la surveillance du signal de détection et arrête la transmission d'un résultat de détection lorsqu'un déclencheur prédéfini est détecté.
PCT/JP2024/016247 2024-04-25 2024-04-25 Terminal et procédé de détection Pending WO2025224922A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2024/016247 WO2025224922A1 (fr) 2024-04-25 2024-04-25 Terminal et procédé de détection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2024/016247 WO2025224922A1 (fr) 2024-04-25 2024-04-25 Terminal et procédé de détection

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WO2025224922A1 true WO2025224922A1 (fr) 2025-10-30

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013115443A (ja) * 2011-11-24 2013-06-10 Fujitsu Ltd サーバ装置、通信制御方法、及び通信制御プログラム
WO2017195535A1 (fr) * 2016-05-12 2017-11-16 ソニー株式会社 Dispositif de communication, procédé de communication et programme informatique
JP2020009120A (ja) * 2018-07-06 2020-01-16 富士通株式会社 機器管理プログラム、機器管理システム、及び機器管理方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013115443A (ja) * 2011-11-24 2013-06-10 Fujitsu Ltd サーバ装置、通信制御方法、及び通信制御プログラム
WO2017195535A1 (fr) * 2016-05-12 2017-11-16 ソニー株式会社 Dispositif de communication, procédé de communication et programme informatique
JP2020009120A (ja) * 2018-07-06 2020-01-16 富士通株式会社 機器管理プログラム、機器管理システム、及び機器管理方法

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