Terminal and communication method

Abstract

This terminal has a reception unit that receives a power supply signal from another device and receives power supply, and a control unit that controls the operation of receiving the power supply signal, wherein the power supply signal is a signal used for energy harvesting or a signal for applications other than energy harvesting, and the other device is a base station or another terminal.

Description

Technical Field

[0001] The present invention relates to a terminal and a communication method in a wireless communication system.

Background Art

[0002] In 3GPP (3rd Generation Partnership Project), in order to achieve further increase in system capacity, further increase in data transmission speed, further reduction in latency in the wireless section, etc., a wireless communication method called 5G or NR (New Radio) (hereinafter, this wireless communication method is referred to as "NR") is being studied. In 5G, in order to meet the requirement of achieving a throughput of 10 Gbps or more and reducing the latency in the wireless section to 1 ms or less, various wireless technologies and network architectures are being studied (for example, Non-Patent Document 1).

[0003] In addition, studies on future systems or 6G beyond 5G have been started. In such future systems, further improvement in communication performance and diversification of use cases are assumed.

Prior Art Documents

Non-Patent Documents

[0004]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] For example, improvement of wireless communication assuming a device utilizing technologies such as energy harvesting or wireless power supply is required.

[0006] The present invention has been made in view of the above points, and an object thereof is to realize power supply by wireless signals in a wireless communication system.

Means for Solving the Problem

[0007] According to the disclosed technology, there is provided a receiving unit that receives a signal for supplying power from another device and receives power supply, and a control unit that controls an operation of receiving the signal for supplying power. The signal for supplying power is a signal used for energy harvesting and a signal for other uses than energy harvesting, and the other device is a base station and another terminal provided with a terminal.

Effect of the Invention

[0008] According to the disclosed technology, in a wireless communication system, power supply by a wireless signal can be realized.

Brief Description of the Drawings

[0009]

Figure 1

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Figure 10

Embodiments for Carrying Out the Invention

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the embodiments described below are merely examples, and the embodiments to which the present invention is applied are not limited to the following embodiments.

[0011] In the operation of the wireless communication system according to the embodiment of the present invention, existing technologies are appropriately used. However, the existing technology is, for example, existing LTE, but is not limited to existing LTE. In addition, the term "LTE" used in this specification shall have a broad meaning including LTE-Advanced and subsequent systems (e.g., NR) unless otherwise specified.

[0012] Also, in the embodiments of the present invention described below, terms 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), PUSCH (Physical Uplink Shared Channel) used in existing LTE are used. This is for convenience of description, and signals, functions, etc. similar to these may be called by other names. Also, the above terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc. However, even for signals used in NR, they are not necessarily specified as "NR-".

[0013] In addition, in the embodiments of the present invention, the duplex mode may be a TDD (Time Division Duplex) mode, an FDD (Frequency Division Duplex) mode, or another mode (for example, Flexible Duplex, etc.).

[0014] In addition, in the embodiments of the present invention, the phrase "configured" for wireless parameters, etc. may mean that predetermined values are pre-configured, or that wireless parameters notified from the base station 10 or the terminal 20 are configured.

[0015] FIG. 1 is a diagram for explaining 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 as shown in FIG. 1. In FIG. 1, one base station 10 and one terminal 20 are shown, but this is an example, and there may be a plurality of each.

[0016] 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. 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. Also, the TTI (Transmission Time Interval) in the time domain may be a slot or a sub-slot, or the TTI may be a sub-frame.

[0017] The base station 10 is capable of performing carrier aggregation in which a plurality of cells (a plurality of CCs (Component Carriers)) are bundled to communicate with the terminal 20. In carrier aggregation, one primary cell (PCell, Primary Cell) and one or more secondary cells (SCells, Secondary Cells) are used.

[0018] The base station 10 transmits synchronization signals, system information, etc. to the terminal 20. The synchronization signals are, for example, NR-PSS and NR-SSS. The system information is transmitted, for example, by NR-PBCH or PDSCH, and is also called broadcast information. As shown in FIG. 1, the base station 10 transmits control signals or data to the terminal 20 in the DL (Downlink) and receives control signals or data from the terminal 20 in the UL (Uplink). Here, what is transmitted on control channels such as PUCCH and PDCCH is called a control signal, and what is transmitted on shared channels such as PUSCH and PDSCH is called data, but such a naming method is just an example.

[0019] The terminal 20 is a communication device equipped with a wireless communication function such as a smartphone, a mobile phone, a tablet, a wearable terminal, a communication module for M2M (Machine-to-Machine), etc. As shown in FIG. 1, the terminal 20 receives control signals or data from the base station 10 in the DL and transmits control signals or data to the base station 10 in the UL, thereby using various communication services provided by the wireless communication system. Note that the terminal 20 may be called a UE, and the base station 10 may be called a gNB.

[0020] The terminal 20 is capable of performing carrier aggregation in which a plurality of cells (a plurality of CCs) are bundled to communicate with the base station 10. In carrier aggregation, one primary cell and one or more secondary cells are used. Also, a PUCCH-SCell having a PUCCH may be used.

[0021] Here, studies on systems in the future beyond 5G or 6G have been started. In the future system, further improvement in communication performance and diversification of use cases are assumed. For example, improvement in wireless communication assuming devices that utilize technologies such as energy harvesting or wireless power supply is required.

[0022] A signal or channel that supplies power to the terminal 20 (hereinafter also referred to as a "power supply signal") may be, for example, any of 1)-3) shown below.

[0023] 1) An energy harvesting reference signal. It is defined as a reference signal used for energy harvesting. It may be transmitted from the base station 10 or may be transmitted from the terminal 20.

[0024] 2) An existing reference signal or other signal. For example, it may be a signal not for energy harvesting. For example, CSI-RS (Channel State Information Reference Signal), TRS (Tracking Reference Signal), DMRS (Demodulation Reference Signal), PTRS (Phase Tracking Reference Signal), PRS (Positioning Reference Signal), SRS (Sounding Reference Signal), SSB (SS / PBCH block) may be the power supply signal. It may be a signal for its own device or a signal for other devices. It may be a signal from the serving cell or a signal from an adjacent cell. It may also be a signal from another terminal 20 such as UL or SL.

[0025] 3) A control signal and / or a data signal. For example, a signal for another terminal 20 in DL may be used, or a signal for its own terminal 20 in DL may be used. It may also be a signal from another terminal 20 such as UL or SL.

[0026] FIG. 2 is a sequence diagram showing an example of energy harvesting in an embodiment of the present invention. In step S11, the base station 10 transmits information related to the power supply signal to the terminal 20. In the subsequent step S12, the terminal 20 executes energy harvesting based on the information related to the received power supply signal. Note that in step S11, another terminal 20 may transmit information related to the power supply signal to the terminal 20.

[0027] For example, as information related to the power supply signal, information regarding the UL signal of another terminal 20 may be transmitted from the base station 10 or another terminal 20.

[0028] For example, the terminal 20 may receive a UL signal or an SL signal that can be used as a power supply signal from a terminal 20 with surplus power, such as a terminal 20 with sufficient power supply. For example, the condition for the terminal 20 to transmit a power supply signal may be notified by the network or defined by the specification. The condition may be a threshold related to power. For example, information indicating whether to transmit a power supply signal may be notified from the network to the terminal 20. The notification may be transmitted via DCI, MAC-CE, or RRC signaling.

[0029] For example, the terminal 20 may set or update the beam to be applied to the power supply signal. For example, the terminal 20 may notify the network of the selected beam or the power supply signal. Also, the conditions, thresholds, etc. of the beam to be selected may be notified by the network or defined by the specification. In the embodiments of the present invention, the beam may be a transmission beam or a reception beam.

[0030] The terminal 20 may apply or associate a beam that is being used as another channel or another signal as the power supply signal. The correspondence relationship of the association between the beam of another channel or another signal and the power supply signal may be notified or defined. The network may notify the terminal 20 of the beam to be applied to the power supply signal, and may notify the terminal 20 of the beam used by one or more terminals 20 among the beams to be applied to the power supply signal.

[0031] For example, the operation related to the power supply signal may be switched according to the state or type of the terminal 20, such as the connected mode, the idle / non-active mode, the state related to mobility, etc. For example, when the terminal 20 is in the idle / non-active mode, an existing signal such as an SSB may be used as the power supply signal, or when in the connected mode, a control signal, a data signal, and / or an energy harvesting reference signal may be used as the power supply signal.

[0032] For example, when in the idle / non-active mode, the terminal 20 may autonomously update the beam applied to the power supply signal, or when in the connected mode, the beam applied to another signal or another channel may be applied to or associated with the power supply signal. For example, for a fixed device or a device in a state where it hardly moves, a dedicated beam applied to the power supply signal may be set.

[0033] FIG. 3 is a diagram showing an example of transmitting a normal signal. As shown in FIG. 3, the physical configurations of the normal signals transmitted from the base station 10A to the terminal 20A and from the base station 10B to the terminal 20A are different. The physical configuration of the signal may be, for example, a frequency, a sequence ID used for generating the signal, or a resource position in the frequency domain and / or the time domain.

[0034] FIG. 4 is a diagram showing an example (1) of transmitting a power supply signal in an embodiment of the present invention. As shown in FIG. 4, the power supply signal may be common in a plurality of cells. For example, power supply signals having the same physical configuration may be transmitted in different cells. The power supply signal may form an SFN (Single Frequency Network) in each base station 10. Note that the cell formed by the power supply signal may be smaller or larger than the cell formed by the normal signal.

[0035] Information for identifying a cell, such as a cell ID or a PCI (Physical Cell ID), may be defined separately for a power supply signal from a normal cell. Information for identifying a cell for a power supply signal may be notified from a network to the terminal 20, or may be associated with a physical configuration of the power supply signal or the like.

[0036] Information for identifying a cell for a normal cell and information for identifying a cell for a power supply signal may be associated with each other. The association between the information for identifying a cell for a normal cell and the information for identifying a cell for a power supply signal may be notified from a network to the terminal 20, or may be defined in a specification.

[0037] FIG. 5 is a diagram showing an example (2) of transmitting a power supply signal in an embodiment of the present invention. As shown in FIG. 5, the power supply signal may be transmitted with a transmission power different from that of a normal signal, and a terminal 20 located in a cell different from the cell of the base station 10 that has transmitted the power supply signal may receive the power supply signal. A cell configuration of the power supply signal assuming a coverage area of the power supply signal may be assumed separately from a normal signal. The power supply signal may be transmitted with a transmission power larger than that of a normal signal, or may be transmitted with a smaller transmission power. The coverage of the power supply signal may be larger than the coverage of a normal signal, or may be smaller than the coverage of a normal signal. Information indicating the transmission power of the power supply signal may be notified from a network. For example, it may be notified as an absolute value, or may be notified as a relative value with respect to another signal or the like.

[0038] A base station 10 that transmits a power supply signal and a base station 10 that does not transmit a power supply signal may be installed. Information indicating from which base station 10 the power supply signal is being transmitted may be notified from a network to the terminal 20. Information indicating whether the base station 10 of the currently located cell is transmitting a power supply signal may be notified from a network to the terminal 20. Information indicating whether it is possible to receive a power supply signal in the currently located cell may be notified from a network to the terminal 20.

[0039] Information for identifying cells such as cell IDs and PCIs may be defined separately for a normal cell and for a power supply signal destination. Information for identifying a cell for a power supply signal may be notified from the network to the terminal 20, or may be associated with the physical configuration of the power supply signal or the like.

[0040] Information for identifying a cell for a normal cell and information for identifying a cell for a power supply signal may be associated. The association between information for identifying a cell for a normal cell and information for identifying a cell for a power supply signal may be notified from the network to the terminal 20, or may be defined in a specification.

[0041] FIG. 6 is a diagram showing an example (3) of transmitting a power supply signal in an embodiment of the present invention. As shown in FIG. 6, power supply signals may be exchanged between terminals 20. For example, a terminal 20 located in a certain cell may transmit a power supply signal to a terminal 20 located in another cell. Also, power supply signals may be exchanged between terminals 20 located in close proximity. For example, power supply signals may be exchanged between terminals 20 located in adjacent cells as shown in FIG. 6. Note that, similar to the operation of the base station 10 in FIGS. 4 and 5, the terminal 20 may transmit a power supply signal.

[0042] The transmission trigger of the power supply signal may be triggered as shown in 1)-5) below.

[0043] 1) Always. The base station 10 may always transmit a power supply signal to the terminal 20.

[0044] 2) The base station 10 may transmit a power supply signal based on information reported by the terminal 20. The information reported by the terminal 20 may be the battery status, the power supply status, the UE capabilities related to energy harvesting, or the like. Whether a power sharing signal is transmitted based on the reported information may be notified to the terminal 20, or it may be defined that a power supply signal is assumed to be transmitted according to the UE report information (i.e., the terminal state / capability).

[0045] 3) Notify the base station 10 of the information that triggers the transmission of the power supply signal from the terminal 20. That is, the transmission of the power supply signal to the base station 10 may be triggered on demand from the terminal 20.

[0046] 4) When the base station 10 transmits data, a reporting instruction, etc. to the terminal 20, the transmission of the power supply signal may be triggered accordingly. The base station 10 may notify the terminal 20 of the information indicating whether the power supply signal is to be transmitted together with the data, the reporting instruction, etc. The notification may be notified to the terminal 20 in advance by RRC signaling, or may be notified by a wake-up signal or the like, or may be notified by DCI of data scheduling or the like. The terminal 20 may perform blind detection of the power supply signal.

[0047] 5) The base station 10 may transmit the power supply signal in accordance with the period during which the terminal 20 wakes up. The base station 10 may notify the terminal 20 of the information indicating whether the power supply signal is transmitted during the period, or the terminal 20 may perform blind detection of the power supply signal. The notification may be notified in advance by RRC signaling, or may be notified by a wake-up signal or the like. For example, the power supply signal may be transmitted in accordance with the position related to the timing of paging-related monitoring, the timing of wake-up signal monitoring, the on duration timing of CDRX, etc., and the relative position with respect to those timings may be notified or specified.

[0048] The power supply signal may be transmitted as shown in 1)-3) below. 1) It may be transmitted periodically. 2) It may be transmitted by SPS (Semi-persistent scheduling) from the triggered timing, or may be stopped by a timer or deactivation. 3) It may be transmitted aperiodically from the triggered timing. The number of consecutive transmissions, etc. may be notified from the base station 10 to the terminal 20.

[0049] Also, based on the current power supply amount, the status of the battery remaining amount, the request for power consumption, etc., the control related to the power supply signal may be switched dynamically or by the UE autonomously based on an event trigger. A UE capability indicating whether to support the operation may be defined, and the UE capability may be reported to the base station 10. Conditions or thresholds for the UE to autonomously switch the control related to the power supply signal may be notified or specified.

[0050] Also, a UE capability indicating whether to support statically or semi-statically performing control related to the power supply signal may be defined, and the UE capability may be reported to the base station 10. The UE capability may be defined in association with categories, RedCap UEs, LTE IoT, etc.

[0051] In the embodiments of the present invention, the base station may be replaced with a TRP (Transmission reception point), a cell, a power supply point, a relay node, an IAB (Integrated Access Backhaul), a relay, a repeater, etc.

[0052] Whether the above-described embodiments are applicable may be notified to the terminal 20 by RRC signaling, MAC-CE, DCI, etc. A UE capability indicating whether to support some or all of the above-described embodiments may be defined and reported from the terminal 20 to the base station 10. Whether the above-described embodiments are applicable may be determined based on UE capabilities, UE categories, UE types, traffic types, or QoS (Quality of service), etc.

[0053] According to the above-described embodiments, the terminal 20 can receive a power supply signal from the base station 10 or another terminal 20 and perform energy harvesting.

[0054] That is, in a wireless communication system, power supply by a wireless signal can be realized.

[0055] (Device Configuration) Next, a functional configuration example of the base station 10 and the terminal 20 that execute the processes and operations described so far will be described. The base station 10 and the terminal 20 include functions for executing the above-described embodiments. However, the base station 10 and the terminal 20 may each be provided with only any one of the functions of the embodiments.

[0056] <Base station 10> FIG. 7 is a diagram showing an example of the functional configuration of the base station 10. As shown in FIG. 7, the base station 10 includes a transmission unit 110, a reception unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in FIG. 7 is merely an example. As long as the operations according to the embodiments of the present invention can be executed, the functional classification and the names of the functional units may be anything. The transmission unit 110 and the reception unit 120 may be referred to as a communication unit.

[0057] The transmission unit 110 includes a function of generating a signal to be transmitted to the terminal 20 side and wirelessly transmitting the signal. The reception unit 120 includes a function of receiving various signals transmitted from the terminal 20 and obtaining information of a higher layer, for example, from the received signals. Further, the transmission unit 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals, DL data, etc. to the terminal 20. Further, the transmission unit 110 transmits the setting information etc. described in the embodiments.

[0058] The setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20 in a storage device and reads it out from the storage device as necessary. The control unit 140 performs, for example, resource allocation, control of the entire base station 10, etc. Note that a functional unit related to signal transmission in the control unit 140 may be included in the transmission unit 110, and a functional unit related to signal reception in the control unit 140 may be included in the reception unit 120. Further, the transmission unit 110 and the reception unit 120 may be referred to as a transmitter and a receiver, respectively.

[0059] <Terminal 20> FIG. 8 is a diagram showing an example of the functional configuration of the terminal 20. As shown in FIG. 8, the terminal 20 includes a transmission unit 210, a reception unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in FIG. 8 is merely an example. As long as the operations according to the embodiments of the present invention can be executed, the functional classification and the names of the functional units may be anything. The transmission unit 210 and the reception unit 220 may be called a communication unit.

[0060] The transmission unit 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal. The reception unit 220 wirelessly receives various signals and acquires signals of a higher layer from the received physical layer signals. Further, the transmission unit 210 transmits HARQ-ACK, and the reception unit 220 receives the setting information and the like described in the embodiments.

[0061] The setting unit 230 stores various setting information received from the base station 10 by the reception unit 220 in a storage device and reads it out from the storage device as necessary. The setting unit 230 also stores preset setting information. The control unit 240 controls the entire terminal 20. Note that a functional unit related to signal transmission in the control unit 240 may be included in the transmission unit 210, and a functional unit related to signal reception in the control unit 240 may be included in the reception unit 220. Also, the transmission unit 210 and the reception unit 220 may be called a transmitter and a receiver, respectively.

[0062] (Hardware Configuration) The block diagrams (FIGS. 7 and 8) used in the description of the above embodiments show blocks in terms of functions. These functional blocks (components) are realized by an arbitrary combination of at least one of hardware and software. Also, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one physically or logically combined device, or two or more physically or logically separated devices may be directly or indirectly (for example, using wired, wireless, etc.) connected and realized using these multiple devices. The functional block may be realized by combining software with the above one device or the above multiple devices.

[0063] Functions include, but are not limited to, judgment, decision-making, determination, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection determination, establishment, comparison, assumption, expectation, presumption, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating (mapping), assigning, etc. For example, a functional block (component) that enables transmission is referred to as a transmitting unit or a transmitter. In any case, as described above, the implementation method is not particularly limited.

[0064] For example, the base station 10, the terminal 20, etc. in one embodiment of the present disclosure may function as a computer that performs the processing of the wireless communication method of the present disclosure. FIG. 9 is a diagram showing an example of the hardware configuration of the base station 10 and the terminal 20 according to one embodiment of the present disclosure. Physically, the above-described base station 10 and terminal 20 may be configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

[0065] In the following description, the term "device" can be read as a circuit, a device, a unit, etc. The hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured without including some devices.

[0066] Each function in the base station 10 and the terminal 20 is realized by causing the processor 1001 to perform calculations and control communication by the communication device 1004, or to control at least one of reading and writing data in the storage device 1002 and the auxiliary storage device 1003, by loading a predetermined software (program) onto hardware such as the processor 1001 and the storage device 1002.

[0067] The processor 1001 controls the entire computer by operating, for example, an operating system. The processor 1001 may be composed of a central processing unit (CPU: Central Processing Unit) including an interface with peripheral devices, a control device, an arithmetic device, registers, and the like. For example, the above-described control unit 140, control unit 240, etc. may be realized by the processor 1001.

[0068] Further, the processor 1001 reads a program (program code), software module, 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 according thereto. As the program, a program for causing a computer to execute at least a part of the operations described in the above embodiments is used. For example, the control unit 140 of the base station 10 shown in FIG. 7 may be stored in the storage device 1002 and realized by a control program operating on the processor 1001. Also, for example, the control unit 240 of the terminal 20 shown in FIG. 8 may be stored in the storage device 1002 and realized by a control program operating on the processor 1001. Although it has been described that the above various processes are executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be mounted by one or more chips. Note that the program may be transmitted from a network via a telecommunication line.

[0069] The memory device 1002 is a computer-readable recording medium and may be constituted by at least one of, for example, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. The memory device 1002 may be referred to as a register, a cache, a main memory (main storage device), etc. The memory device 1002 can store a program (program code), a software module, etc. that are executable for implementing the communication method according to an embodiment of the present disclosure.

[0070] The auxiliary storage device 1003 is a computer-readable recording medium and may be constituted by 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 (for example, a compact disc, a digital versatile disc, a Blu-ray (registered trademark) disc), a smart card, a flash memory (for example, a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, etc. The above-described storage medium may be, for example, a database, a server, or other appropriate medium including at least one of the memory device 1002 and the auxiliary storage device 1003.

[0071] The communication device 1004 is hardware (a transceiver device) for performing communication between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc. The communication device 1004 may be configured to include, for example, a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to implement at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, a transceiver antenna, an amplifier section, a transceiver section, a transmission line interface, etc. may be implemented by the communication device 1004. The transceiver section may be physically or logically separated into a transmission section and a reception section.

[0072] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an external input. The output device 1006 is an output device (e.g., a display, a speaker, an LED lamp, etc.) that performs an output to the outside. Note that the input device 1005 and the output device 1006 may have an integrated configuration (e.g., a touch panel).

[0073] Also, 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 for each device.

[0074] In addition, 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), and a field programmable gate array (FPGA), and some or all of the functional blocks may be realized by the hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0075] FIG. 10 shows a configuration example of the vehicle 2001. As shown in FIG. 10, 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 to 2029, an information service unit 2012, and a communication module 2013. Each aspect / embodiment described in the present disclosure may be applied to a communication device mounted on the vehicle 2001, for example, it may be applied to the communication module 2013.

[0076] 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 handwheel), and is configured to steer at least one of the front wheels and the rear wheels based on an operation of the steering wheel operated by a user.

[0077] The electronic control unit 2010 is composed of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals from various sensors 2021 to 2029 provided in the vehicle 2001 are input to the electronic control unit 2010. The electronic control unit 2010 may also be referred to as an ECU (Electronic Control Unit).

[0078] As signals from various sensors 2021 to 2029, there are a current signal from a current sensor 2021 that senses the current of the motor, a rotational speed signal of the front and rear wheels acquired by a rotational speed sensor 2022, an air pressure signal of the front and rear wheels 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, a depression amount signal of the accelerator pedal acquired by an accelerator pedal sensor 2029, a depression amount signal of the brake pedal acquired by a brake pedal sensor 2026, an operation signal of the shift lever acquired by a shift lever sensor 2027, a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by an object detection sensor 2028, etc.

[0079] The information service unit 2012 is composed of various devices for providing various information such as driving information, traffic information, and entertainment information, such as a car navigation system, an audio system, speakers, a TV, and a radio, and one or more ECUs that control these devices. The information service unit 2012 uses the information acquired from an external device via a communication module 2013, etc., to provide various multimedia information and multimedia services to the passengers of the vehicle 2001.

[0080] The driving support system unit 2030 is composed of various devices for providing functions for preventing accidents and reducing the driving load of the driver, such as a millimeter-wave radar, LiDAR (Light Detection and Ranging), a camera, a positioning locator (e.g., GNSS, etc.), map information (e.g., high-definition (HD) map, autonomous vehicle (AV) map, etc.), a gyro system (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), an AI (Artificial Intelligence) chip, an AI processor, etc., and one or more ECUs that control these devices. In addition, the driving support system unit 2030 transmits and receives various information via the communication module 2013 to realize a driving support function or an autonomous driving function.

[0081] The communication module 2013 can communicate with the microprocessor 2031 and the components of the vehicle 2001 via a communication port. For example, the communication module 2013 can send and receive data with the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, the microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 2029 provided in the vehicle 2001 via the communication port 2033.

[0082] The communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it can send and receive various information via wireless communication with the external device. The communication module 2013 may be either inside or outside the electronic control unit 2010. The external device may be, for example, a base station, a mobile station, etc.

[0083] The communication module 2013 transmits the current signal from the current sensor input to the electronic control unit 2010 to an external device via wireless communication. Also, the communication module 2013 transmits, via wireless communication to an external device, the rotation speed signals of the front and rear wheels acquired by the rotation speed sensor 2022, the air pressure signals of the front and rear wheels acquired by the air pressure sensor 2023, the vehicle speed signal acquired by the vehicle speed sensor 2024, the acceleration signal acquired by the acceleration sensor 2025, the depression amount signal of the accelerator pedal acquired by the accelerator pedal sensor 2029, the depression amount signal of the brake pedal acquired by the brake pedal sensor 2026, the operation signal of the shift lever acquired by the shift lever sensor 2027, and the detection signals for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028, etc., which are input to the electronic control unit 2010.

[0084] The communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from an external device and displays it to the information service unit 2012 provided in the vehicle 2001. Further, the communication module 2013 stores various information received from the external device in the memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the 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 to 2029, etc. provided in the vehicle 2001.

[0085] (Summary of Embodiment) As described above, according to the embodiment of the present invention, there is provided a receiving unit that receives a signal for supplying power from another device and receives power supply, and a control unit that controls an operation of receiving the signal for supplying power. The signal for supplying power is a signal used for energy harvesting and a signal for other uses than energy harvesting, and the other device is a base station and another terminal.

[0086] With the above configuration, the terminal 20 can receive a power supply signal from the base station 10 or another terminal 20 and execute energy harvesting. That is, in a wireless communication system, power supply by a wireless signal can be realized.

[0087] The signal for other uses than energy harvesting is a reference signal, a synchronization signal, a control signal, or a data signal, and may be a signal in a self-cell and other cells, or a signal addressed to the self-device and a device other than the self-device. With this configuration, the terminal 20 can receive a power supply signal from the base station 10 or another terminal 20 and execute energy harvesting.

[0088] The signal used for energy harvesting may have the same physical configuration in a plurality of cells. With this configuration, the terminal 20 can efficiently receive a power supply signal from the base station 10 and execute energy harvesting.

[0089] The coverage by the signal used for the energy harvesting may be different from the coverage of the signal for uses other than the energy harvesting. With this configuration, the terminal 20 can efficiently receive a power supply signal from the base station 10 and execute energy harvesting.

[0090] The control unit may control the operation based on information indicating whether a power supply signal is transmitted. With this configuration, the terminal 20 can receive a power supply signal from the base station 10 or another terminal 20 and execute energy harvesting.

[0091] Further, according to an embodiment of the present invention, a terminal executes a reception procedure of receiving a signal for supplying power from another device and receiving power supply, and a control procedure of controlling an operation of receiving the signal for supplying power, and the signal for supplying power is a signal used for energy harvesting and a signal for uses other than energy harvesting, and the other device is a base station and another terminal, and a communication method is provided.

[0092] With the above configuration, the terminal 20 can receive a power supply signal from the base station 10 or another terminal 20 and execute energy harvesting. That is, in a wireless communication system, power feeding by a wireless signal can be realized.

[0093] (Supplement of the embodiment) The embodiments of the present invention have been described above. However, the disclosed invention is not limited to such embodiments, and those skilled in the art will understand various variations, modifications, alternatives, substitutions, etc. Although specific numerical examples have been used for the purpose of facilitating the understanding of the invention, unless otherwise specified, those numerical values are merely examples and any appropriate values may be used. The classification of items in the above description is not essential to the present invention, and the matters described in two or more items may be used in combination as needed, or the matters described in one item may be applied to the matters described in another item (as long as there is no contradiction). The boundaries of the functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries of physical components. The operations of a plurality of functional units may be physically performed by one component, or conversely, the operation of one functional unit may be physically performed by a plurality of components. Regarding the processing procedures described in the embodiments, the order of processing may be changed as long as there is no contradiction. For the sake of convenience in explaining the processing, the base station 10 and the terminal 20 have been described using functional block diagrams, but such devices may be implemented in hardware, software, or a combination thereof. The software that operates by the processor included in the base station 10 according to the embodiment of the present invention and the software that operates by the processor included in the terminal 20 according to the embodiment of the present invention may be stored in a random access memory (RAM), a flash memory, a read-only memory (ROM), an EPROM, an EEPROM, a register, a hard disk drive (HDD), a removable disk, a CD-ROM, a database, a server, or any other appropriate storage medium, respectively.

[0094] Furthermore, the notification of information is not limited to the aspects / embodiments described in the present disclosure, and other methods may be used. For example, the notification of information may be implemented by physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, notification information (MIB (Master Information Block), SIB (System Information Block)), other signals, or combinations thereof. Also, the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC connection setup (RRC Connection Setup) message, an RRC connection reconfiguration (RRC Connection Reconfiguration) message, etc.

[0095] Each aspect / embodiment described in the present disclosure may be applied to at least one of systems using LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (x is, for example, an integer or a decimal), FRA (Future Radio Access), NR (new Radio), New radio access (NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and other appropriate systems, and to next-generation systems extended, modified, created, and defined based on these. Also, multiple systems may be combined and applied (for example, a combination of at least one of LTE and LTE-A and 5G, etc.).

[0096] The processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this specification may be reordered as long as there is no contradiction. For example, for the methods described in the present disclosure, the elements of various steps are presented using an exemplary order and are not limited to the specific order presented.

[0097] The specific operations assumed to be performed by the base station 10 in this specification may, in some cases, be performed by its upper node. In a network consisting of one or more network nodes having the base station 10, it is obvious that various operations performed for communication with the terminal 20 can be performed by at least one of the base station 10 and other network nodes other than the base station 10 (for example, but not limited to, MME or S-GW, etc.). Although the case where there is one other network node other than the base station 10 is exemplified above, the other network node may be a combination of a plurality of other network nodes (for example, MME and S-GW).

[0098] The information or signals, etc. described in this disclosure can be output from an upper layer (or a lower layer) to a lower layer (or an upper layer). They may be input and output via a plurality of network nodes.

[0099] The input and output information, etc. may be stored in a specific location (for example, a memory), or may be managed using a management table. The input and output information, etc. can be overwritten, updated, or appended. The output information, etc. may be deleted. The input information, etc. may be transmitted to other devices.

[0100] The determination in this disclosure may be made by a value represented by 1 bit (0 or 1), or may be made by a Boolean value (true or false), or may be made by a numerical comparison (for example, comparison with a predetermined value).

[0101] Software should be broadly construed to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc., whether called software, firmware, middleware, microcode, a hardware description language, or by any other name.

[0102] Also, software, instructions, information, etc. may be transmitted and received via a transmission medium. For example, when software is transmitted from a website, server, or other remote source using at least one of wired technologies (such as coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL)) and wireless technologies (such as infrared, microwave), at least one of these wired and wireless technologies is included within the definition of a transmission medium.

[0103] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc., which may be referred to throughout the above description, may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0104] Note that terms described in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Also, a signal may be a message. Also, a component carrier (CC) may be referred to as a carrier frequency, a cell, a frequency carrier, etc.

[0105] The terms "system" and "network" as used in this disclosure are used interchangeably.

[0106] Also, the information, parameters, etc. described in the present disclosure may be represented using absolute values, relative values from a predetermined value, or using other corresponding information. For example, radio resources may be indicated by an index.

[0107] The names used for the above-described parameters are not limiting names in any way. Furthermore, the mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. Since various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, the various names assigned to these various channels and information elements are not limiting names in any way.

[0108] In the present disclosure, terms such as "base station (BS:Base Station)", "radio base station", "base station", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", "access point", "transmission point", "reception point", "transmission / reception point", "cell", "sector", "cell group", "carrier", "component carrier", etc. may be used interchangeably. The base station may also be called by terms such as macro cell, small cell, femto cell, pico cell, etc.

[0109] A base station can accommodate one or more (e.g., three) cells. When the base station accommodates a plurality of cells, the entire coverage area of the base station can be divided into a plurality of smaller areas, and each of the smaller areas can also provide communication services by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head)). The term "cell" or "sector" refers to a part or the whole of the coverage area of at least one of a base station and a base station subsystem that provides communication services in this coverage.

[0110] In the present disclosure, terms such as "mobile station (MS)", "user terminal", "user equipment (UE)", and "terminal" can be used interchangeably.

[0111] 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 terms.

[0112] 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. Note that at least one of the base station and the mobile station may be a device mounted on a moving body, the moving body itself, etc. The moving body may be a vehicle (e.g., a car, an airplane, etc.), a moving body that moves unmanned (e.g., a drone, an autonomous vehicle, etc.), or a robot (humanoid or unmanned). Note that at least one of the base station and the mobile station also includes a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

[0113] In addition, the base station in the present disclosure may be replaced by a user terminal. For example, for a configuration in which communication between the base station and the user terminal is replaced by communication between a plurality of terminals 20 (which may be referred to as, for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.), each aspect / embodiment of the present disclosure may be applied. In this case, the functions of the above-described base station 10 may be configured to be functions of the terminal 20. Also, terms such as "uplink" and "downlink" may be replaced with terms corresponding to inter-terminal communication (for example, "side"). For example, an uplink channel, a downlink channel, etc. may be replaced with a side channel.

[0114] Similarly, the user terminal in the present disclosure may be replaced by a base station. In this case, the functions of the above-described user terminal may be configured to be functions of the base station.

[0115] The terms "determining" and "deciding" as used in this disclosure may encompass a wide variety of actions. "Determining" and "deciding" may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database, or other data structure), ascertaining, and considering something as having been "determined" or "decided". Also, "determining" and "deciding" may include considering something as having been "determined" or "decided" after receiving (e.g., receiving information), transmitting (e.g., transmitting information), inputting, outputting, accessing (e.g., accessing data in memory), etc. Further, "determining" and "deciding" may include considering something as having been "determined" or "decided" after resolving, selecting, choosing, establishing, comparing, etc. That is, "determining" and "deciding" may include considering that some action has been "determined" or "decided". Also, "determining (deciding)" may be read as "assuming", "expecting", "considering", etc.

[0116] The terms "connected" and "coupled," or any variations thereof, mean any direct or indirect connection or coupling between two or more elements, and can 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 can be physical, logical, or a combination thereof. For example, "connected" may be read as "accessed." As used in this disclosure, two elements can be considered to be "connected" or "coupled" to each other using at least one of one or more electrical wires, cables, and printed electrical connections, as well as, by way of some non-limiting and non-inclusive examples, electromagnetic energy having wavelengths in the radio frequency region, microwave region, and optical (both visible and invisible) region.

[0117] The reference signal can also be abbreviated as RS (Reference Signal) and may be called a Pilot depending on the applicable standard.

[0118] As used in this disclosure, the description "based on" does not mean "based only on" unless otherwise specified. In other words, the description "based on" means both "based only on" and "based at least on."

[0119] Any reference to an element using designations such as "first," "second," etc. used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, a reference to a first and second element does not mean that only two elements can be employed, or that the first element must precede the second element in any form.

[0120] The "means" in the configuration of each of the above devices may be replaced with a "section," "circuit," "device," etc.

[0121] In the present disclosure, when terms such as "include", "including" and their variants are used, these terms are intended to be inclusive, similar to the term "comprising". Further, the term "or" used in the present disclosure is not intended to be an exclusive disjunction.

[0122] The 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. The subframe may further be composed of one or more slots in the time domain. The subframe may have a fixed time length (e.g., 1 ms) independent of numerology.

[0123] Numerology may be a communication parameter applied to at least one of transmission and reception of a certain signal or channel. Numerology may indicate, for example, at least one of subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, specific filtering processing performed by a transceiver in the frequency domain, specific windowing processing performed by a transceiver in the time domain, etc.

[0124] The slot may be composed of one or more symbols (such as OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.) in the time domain. The slot may be a time unit based on numerology.

[0125] The slot may include a plurality of mini-slots. Each mini-slot may be composed of one or more symbols in the time domain. Also, the mini-slot may be called a sub-slot. The mini-slot may be composed of a smaller number of symbols than the slot. The PDSCH (or PUSCH) transmitted in a time unit larger than the mini-slot may be called PDSCH (or PUSCH) mapping type A. The PDSCH (or PUSCH) transmitted using the mini-slot may be called PDSCH (or PUSCH) mapping type B.

[0126] The radio frame, sub-frame, slot, mini-slot, and symbol all represent time units when transmitting signals. Different names corresponding to each of them may also be used.

[0127] For example, one sub-frame may be called a Transmission Time Interval (TTI), or a plurality of consecutive sub-frames may be called TTI, or one slot or one mini-slot may be called TTI. That is, at least one of the sub-frame and TTI may be the sub-frame (1 ms) in the existing LTE, or a period shorter than 1 ms (for example, 1 - 13 symbols), or a period longer than 1 ms. Note that the unit representing TTI may be called a slot, mini-slot, etc. instead of a sub-frame.

[0128] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the base station performs scheduling to allocate radio resources (such as the frequency bandwidth and transmission power that can be used in each terminal 20) to each terminal 20 in TTI units. Note that the definition of TTI is not limited to this.

[0129] The TTI may be a transmission time unit such as a channel-coded data packet (transport block), code block, codeword, etc., or may be a processing unit such as scheduling and link adaptation. When the TTI is given, the time interval (e.g., number of symbols) in which a transport block, code block, codeword, etc. are actually mapped may be shorter than the TTI.

[0130] In addition, when one slot or one mini-slot is called a TTI, one or more TTIs (i.e., one or more slots or one or more mini-slots) may be the minimum time unit for scheduling. Also, the number of slots (number of mini-slots) constituting the minimum time unit for the scheduling may be controlled.

[0131] A TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel.8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc. A TTI shorter than the normal TTI may be called a shortened TTI, short TTI, partial TTI (partial or fractional TTI), shortened subframe, short subframe, mini-slot, sub-slot, slot, etc.

[0132] In addition, a long TTI (e.g., normal TTI, subframe, etc.) may be read as a TTI having a time length exceeding 1 ms, and a short TTI (e.g., shortened TTI, etc.) may be read as a TTI having a TTI length less than that of the long TTI and equal to or more than 1 ms.

[0133] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and in the frequency domain, it may include one or more consecutive subcarriers. The number of subcarriers included in the RB may be the same regardless of the numerology, for example, it may be 12. The number of subcarriers included in the RB may be determined based on the numerology.

[0134] Also, the time domain of the RB may include one or more symbols, and may have the length of 1 slot, 1 mini-slot, 1 sub-frame, or 1 TTI. 1 TTI, 1 sub-frame, etc. may each be composed of one or more resource blocks.

[0135] Note that one or more RBs may be referred to as physical resource blocks (PRBs), sub-carrier groups (SCGs), resource element groups (REGs), PRB pairs, RB pairs, etc.

[0136] Also, a resource block may be composed of one or more resource elements (REs). For example, 1 RE may be a radio resource region of 1 sub-carrier and 1 symbol.

[0137] A bandwidth part (BWP) (which may also be called a partial bandwidth, etc.) may represent a subset of consecutive common resource blocks (common RBs) for a certain numerology in a certain carrier. Here, the common RB may be specified by the index of the RB based on the common reference point of the carrier. A PRB is defined in a certain BWP and may be numbered within the BWP.

[0138] The BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP). One or more BWPs may be set within one carrier for the terminal 20.

[0139] At least one of the set BWPs may be active, and the terminal 20 may not be assumed to transmit and receive a predetermined signal / channel outside the active BWP. Note that "cell", "carrier", etc. in the present disclosure may be read as "BWP".

[0140] The structures such as the above-described radio frames, sub-frames, slots, mini-slots, and symbols are merely illustrative. For example, the number of sub-frames included in a radio frame, the number of slots per sub-frame or radio frame, the number of mini-slots included in a slot, the number of symbols and RBs included in a slot or mini-slot, the number of sub-carriers included in an RB, and the number of symbols, symbol length, cyclic prefix (CP) length, etc. within a TTI can be variously changed.

[0141] In the present disclosure, for example, when articles are added by translation as in the case of a, an, and the in English, the present disclosure may include that the nouns following these articles are in the plural form.

[0142] In the present disclosure, the term "A and B are different" may mean that "A and B are different from each other". Note that the term may also mean that "A and B are each different from C". Terms such as "separate" and "coupled" may also be interpreted in the same way as "different".

[0143] Each aspect / embodiment described in the present disclosure may be used alone, in combination, or switched and used during execution. Also, the notification of predetermined information (for example, the notification of "being X") is not limited to being explicitly performed, and may be performed implicitly (for example, without performing the notification of the predetermined information).

[0144] As described above in detail for the present disclosure, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described in the present disclosure. The present disclosure can be implemented as modified and changed aspects without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the description of the present disclosure is for the purpose of illustrative explanation and has no restrictive meaning for the present disclosure.

Description of Reference Numerals

[0145] 10 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 Memory device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device 2001 Vehicle 2002 Driving unit 2003 Steering unit 2004 Accelerator pedal 2005 Brake pedal 2006 Shift lever 2007 Front wheel 2008 Rear wheel 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 support system unit 2031 Microprocessor 2032 Memory (ROM, RAM) 2033 Communication port (IO port)

Claims

1. a receiving unit that receives a signal for supplying power from another device and receives power supply; a control unit that controls an operation of receiving the signal for supplying power, wherein the signal for supplying power is a signal used for energy harvesting and a signal for other uses than energy harvesting, and the other device is a base station and a terminal which is another terminal.

2. The terminal according to claim 1, wherein the signal for other uses than energy harvesting is a reference signal, a synchronization signal, a control signal or a data signal, and is a signal in a self-cell and other cells, or a signal addressed to the self-device and devices other than the self-device.

3. The terminal according to claim 1, wherein the signal used for energy harvesting has the same physical configuration in a plurality of cells.

4. The terminal according to claim 1, wherein the coverage by the signal used for energy harvesting is different from the coverage of the signal for other uses than energy harvesting.

5. The terminal according to claim 1, wherein the control unit controls the operation based on information indicating whether a power supply signal is transmitted.

6. a receiving procedure in which a terminal receives a signal for supplying power from another device and receives power supply; a control procedure in which the terminal controls an operation of receiving the signal for supplying power, wherein the signal for supplying power is a signal used for energy harvesting and a signal for other uses than energy harvesting, and the other device is a base station and a terminal which is another terminal.

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