Terminals, base stations, communication systems, and communication methods

Abstract

A terminal comprising: a reception unit that receives, from a base station, information indicating a frequency bandwidth for the measurement of a communication environment; and a transmission unit that transmits, to the base station, information indicating the measurement result obtained by measuring in the frequency bandwidth.

Description

Technical Field

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

Background Art

[0002] In NR (New Radio), which is a successor system to LTE (Long Term Evolution) (also referred to as "5G"), technologies that satisfy requirements such as a large-capacity system, high data transmission speed, low latency, simultaneous connection of a large number of terminals, low cost, and power saving are being studied (for example, Non-Patent Document 1).

[0003] In NR Release 17, it is being studied to use a higher frequency band than in conventional releases (for example, Non-Patent Document 2). For example, applicable numerologies including subcarrier spacing, channel bandwidth, etc. in the frequency band from 52.6 GHz to 71 GHz, the design of the physical layer, and obstacles assumed in actual wireless communication are being studied.

[0004] In addition, in NR, a wireless communication system using an IAB (Integrated access and backhaul) node is being studied. The IAB node is a communication device that supports a wireless backhaul and relay link that enables flexible and very high-density deployment of NR cells without the need to densify the wired transport network. The IAB node includes an MT (Mobile Termination) having a terminal function in the backhaul link and a DU (Distributed Unit) having a base station function in the access link.

Prior Art Documents

Non-Patent Documents

[0005]

Non-Patent Document 1

[0006] In the newly implemented frequency bands using higher frequencies than before, it is assumed that larger sub-carrier spacings (SCS) will be used, and a larger number of beams will be utilized. However, conventional RSSI and CO measurements and reports have not taken into account the characteristics of the newly introduced high-frequency bands. Specifically, there is a problem in that it is not possible to set the width of the frequency band being measured.

[0007] This invention has been made in view of the above points, and aims to enable measurement within an appropriate frequency band width. [Means for solving the problem]

[0008] According to the disclosed technology, the system includes a receiving unit that receives setting information from a base station indicating the frequency bandwidth in the measurement of a received signal strength index, and a transmitting unit that transmits the measurement result of the received signal strength index measured using the frequency bandwidth set based on the setting information to the base station. In the setting information, the frequency bandwidth in Hertz units is set as the RRC parameter. A device will be provided. [Effects of the Invention]

[0009] The disclosed technology provides a technique that enables measurements within an appropriate frequency bandwidth. [Brief explanation of the drawing]

[0010] [Figure 1] This figure illustrates a wireless communication system according to an embodiment of the present invention. [Figure 2] This figure shows an example of a frequency range according to an embodiment of the present invention. [Figure 3] This is a diagram illustrating an example of sensing. [Figure 4] This is a diagram illustrating an example of a communication environment. [Figure 5] This flowchart shows an example of the measurement process flow according to an embodiment of the present invention. [Figure 6] This is a diagram illustrating the setpoints related to conventional measurements. [Figure 7] This is a diagram illustrating the information related to Option 1-2 of Example 1. [Figure 8] This is a diagram illustrating the MAC-CE instructions related to option 1-1 of Example 2. [Figure 9] This figure shows an example of the functional configuration of a base station according to an embodiment of the present invention. [Figure 10] This figure shows an example of the functional configuration of a terminal according to an embodiment of the present invention. [Figure 11] This figure shows an example of the hardware configuration of a base station or terminal according to an embodiment of the present invention. [Figure 12] This figure shows an example of the configuration of a vehicle according to an embodiment of the present invention. [Modes for carrying out the invention]

[0011] Embodiments of the present invention will be described below with reference to the drawings. Note that the embodiments described below are examples, and the embodiments to which the present invention is applied are not limited to those described below.

[0012] In the operation of the wireless communication system according to the embodiments of the present invention, existing technologies may be used as appropriate. Such existing technologies include, but are not limited to, existing NR or LTE. Furthermore, the term "LTE" as used herein has a broad meaning that includes LTE-Advanced and LTE-Advanced and later technologies (e.g., NR), unless otherwise specified.

[0013] In addition, 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), etc. that are 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-mentioned terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc. However, even for signals used in NR, it is not always necessary to specify "NR-".

[0014] 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.).

[0015] In addition, in the embodiments of the present invention, when a radio parameter or the like is "configured", it may mean that a predetermined value is pre-configured, or it may mean that a radio parameter notified from a base station or a terminal is configured.

[0016] (System configuration) FIG. 1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention. A wireless communication system according to an embodiment of the present invention includes a base station 10 and a terminal 20, as shown in Figure 1. Although Figure 1 shows one base station 10 and one terminal 20, this is an example, and there may be multiple base stations 10 and terminal 20.

[0017] Base station 10 is a communication device that provides one or more cells and performs wireless communication with 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 resource blocks. In addition, the TTI (Transmission Time Interval) in the time domain may be a slot, or the TTI may be a subframe.

[0018] 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). As shown in Figure 1, 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 using beamforming. Furthermore, both the base station 10 and the terminal 20 are capable of applying MIMO (Multiple Input Multiple Output) communication to DL or UL. In addition, both the base station 10 and the terminal 20 may communicate via secondary cells (SCell) and primary cells (PCell) using CA (Carrier Aggregation). Furthermore, terminal 20 may communicate via the primary cell of base station 10 and the primary secondary cell group cell (PSCell: Primary SCG Cell) of other base stations 10 using DC (Dual Connectivity).

[0019] Terminal 20 is a communication device equipped with wireless communication capabilities, such as a smartphone, mobile phone, tablet, wearable device, or M2M (Machine-to-Machine) communication module. As shown in Figure 1, 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. Terminal 20 also receives various reference signals transmitted from the base station 10 and performs propagation path quality measurements based on the reception results of these reference signals. Terminal 20 may also be referred to as UE and base station 10 as gNB.

[0020] Figure 2 shows an example of frequency ranges according to an embodiment of the present invention. The NR specifications of 3GPP Release 15 and Release 16 consider operating in frequency bands above 52.6 GHz, for example. As shown in Figure 2, the currently defined frequency range FR (Frequency range) 1 is from 410 MHz to 7.125 GHz, with a Subcarrier Spacing (SCS) of 15, 30, or 60 kHz and a bandwidth of 5 MHz to 100 MHz. FR2-1 is from 24.25 GHz to 52.6 GHz, with an SCS of 60, 120, or 240 kHz and a bandwidth of 50 MHz to 400 MHz. Furthermore, the newly introduced frequency band, FR2-2, is from 52.6 GHz to 71 GHz.

[0021] In the newly operated frequency band FR2-2, up to 64 SSB beams may be supported in both the licensed and unlicensed bands. Furthermore, in the initial Bandwidth Part (BWP), 120kHz SCS for SSB and 120kHz SCS for initial access signals and channels may be supported.

[0022] In addition to 120kHz SCS, SSB at 480kHz SCS may be supported. This SSB may enable initial access to support CORESET (Control Resource Set)#0 / Type0-PDCCH included in the MIB. However, the following limitations may apply: For example, the entry number of the synchronization raster may be restricted. Also, in the case of 480kHz SCS SSB, only 480kHz SCS CORESET#0 / Type0-PDCCH may be supported. Furthermore, SSB-CORESET multiplexing pattern 1 (SS / PBCH block and CORESET multiplexing pattern 1) may be preferred.

[0023] It may be supported to uniquely identify the ANR (Automatic Neighbor Relation) and PCI (Physical Cell Identity) for detecting 120kHz SCS, 480kHz SCS, and 960kHz SCS SSBs. Furthermore, CORESET#0 / Type0-PDCCH included in the MIB of 120kHz SCS, 480kHz SCS, and 960kHz SSBs may be supported. Additionally, one CORESET#0 / Type0-PDCCH SCS may be supported per SSB SCS. For example, {SSB SCS, CORESET#0 / Type0-PDCCH SCS} may support {120,120}, {480,480}, and {960,960}. Furthermore, SSB-CORESET multiplexing pattern 1 may be preferred.

[0024] NR Release 17 specifies a channel access mechanism that assumes beam-based operation to comply with regulatory requirements applicable to unlicensed spectra in the frequency band from 52.6 GHz to 71 GHz.

[0025] Specifically, procedures related to both LBT and No-LBT are specified, but no additional detection mechanisms are specified for the No-LBT case. Furthermore, omnidirectional LBT, directional LBT, and receiver-assisted information in channel access are considered and specified as needed. Additionally, extensions to the energy detection threshold are considered and specified as needed.

[0026] Figure 3 illustrates an example of sensing. In the newly operated frequency band, it is assumed that a narrower beam will be applied to transmission to compensate for large propagation losses. Here, LBT is performed to meet regulatory requirements in the unlicensed band. LBT is sensing to check whether the channel is occupied or not before transmission begins. Receive beamforming is applied to sense the beam. As shown in Figure 3, conventional omnidirectional sensing can sense in a wider range of directions and has lower gain compared to directional sensing. On the other hand, directional sensing applied to high-frequency bands can sense in a narrower range of directions and has higher gain compared to omnidirectional sensing.

[0027] Figure 4 illustrates an example of a communication environment. It is anticipated that the application of directional sensing beams will cause a hidden node problem where interference is detected at the receiving device but not at the transmitting device. For example, as shown in Figure 4, terminal 20 detects interference between transmissions from base station 10A and base station 10B. However, base station 10A or base station 10B cannot detect interference from its own transmissions at terminal 20.

[0028] Therefore, it is necessary for terminal 20 to transmit the measurement results of the communication environment to base station 10 so that base station 10 can predict the occurrence of interference at terminal 20.

[0029] Conventional measurement methods for NR in the unlicensed frequency band include RSSI (Received Signal Strength Indicator) measurement and channel occupancy (CO) measurement. Specifically, terminal 20 reports the measured RSSI in dBm units to base station 10. Terminal 20 also reports the channel occupancy, which indicates the percentage of samples where the RSSI exceeds a set threshold, to base station 10.

[0030] Figure 5 is a flowchart illustrating the measurement in an embodiment of the present invention. In step S1, terminal 20 receives settings related to RSSI and CO measurement from the base station. In the following step S2, terminal 20 performs RSSI and CO measurement on the DL signal. In the following step S3, terminal 20 reports the RSSI and CO measurement results to the base station.

[0031] Figure 6 is a diagram illustrating the settings for conventional measurements. In NR Release 16, the measured RSSI (RSSI-Result-r16) and channel occupancy (ChannelOccupancy-r16) are set as information indicating the measurement results.

[0032] Furthermore, the measurement settings for RSSI and CO may also be called RMTC (RSSI measurement timing configuration). For example, RMTC consists of the measurement period (rmtc-Periodicity-r16), subframe offset value (rmtc-SubframeOffset-r16), measurement time (measDurationSymbols-r16), measurement frequency (rmtc-Frequency-r16), SCS reference value (ref-SCS-CP-r16), etc.

[0033] For example, the RSSI measurement time may be calculated based on the set number of symbols and the set SCS. The RSSI reported value may also be the average of sample values ​​supplied from lower layers. Furthermore, CO may be the percentage of samples with values ​​exceeding a set threshold.

[0034] In contrast, conventional RSSI and CO measurements and reports did not take into account the characteristics of the newly introduced high-frequency band. Specifically, there was a problem in that it was not possible to set the width of the frequency band being measured (hereinafter referred to as the measurement bandwidth). In the unlicensed frequency band of NR Release 16, this was not a problem because the LBT bandwidth was fixed at 20 MHz. However, in the high-frequency band of 52.6 GHz to 71 GHz in NR Release 17, the LBT bandwidth changes according to the channel bandwidth and BWP, so it is necessary to measure RSSI and CO with a bandwidth corresponding to the LBT bandwidth.

[0035] (Summary of this embodiment) Therefore, this embodiment describes a method for setting the measurement bandwidth in RSSI or CO measurement and reporting. Specifically, Example 1 describes an example of adding a new RRC parameter for setting the measurement bandwidth in RSSI or CO measurement and reporting. Example 2 describes an example of adding MAC-CE for activating or updating the measurement bandwidth in RSSI or CO measurement. Example 3 describes an example of adding a DCI item for indicating the measurement bandwidth in RSSI or CO measurement.

[0036] (Example 1) This example describes how to add a new RRC parameter to set the measurement bandwidth in RSSI or CO measurement and reporting.

[0037] <Option 1> The information set by the new RRC parameters may be as follows. That is, terminal 20 measures RSSI, CO, etc., based on the information set by the RRC parameters shown below.

[0038] <Option 1-1> The information set by the new RRC parameter may also be the measurement bandwidth in Hz units. In this case, the measurement bandwidth can be set directly, providing greater flexibility.

[0039] <Option 1-2> The information set by the new RRC parameter may be an index indicating the measurement bandwidth. For example, the index indicating the measurement bandwidth may be an index for identifying CBW (Channel Bandwidth), BWP (Bandwidth Part), PSCell (Primary SCG Cell), or Scell ​​(Secondary Cell). In the case of an index for identifying PSCell (Primary SCG Cell) or Scell ​​(Secondary Cell), it may refer to the bandwidth (e.g., CBW) assigned to the cell indicated by that index.

[0040] Here, a specific index (for example, "00") may be used to indicate the CBW, BWP, etc., set on terminal 20.

[0041] The index indicating the measurement bandwidth may be associated with existing higher-layer parameters (e.g., BWP-Id, SCellIndex, etc.).

[0042] Figure 7 is a diagram illustrating the information related to Option 1-2 of Example 1. In Figure 7, a number for identifying CBW or BWP is associated with an index indicating the measurement bandwidth.

[0043] <Options 1-3> The information set by the new RRC parameter may also be the RIV (resource indicator value) representing the measurement bandwidth.

[0044] <Options 1-4> The information set by the new RRC parameters may also be information indicating that an activated BWP is applied. In this case, terminal 20 measures RSSI, CO, etc., based on the measurement bandwidth of the activated BWP at the time of measurement. The activated BWP may be an activated downlink BWP or an activated uplink BWP.

[0045] <Option 2> The behavior when new RRC parameter information is not set may also be specified.

[0046] <Option 2-1> If no new RRC parameter information is set, the activated BWP may be applied. In this case, terminal 20 measures RSSI, CO, etc., based on the measurement bandwidth of the activated BWP at the time of measurement. The activated BWP may be the activated downlink BWP or the activated uplink BWP.

[0047] <Option 3> The number of pieces of information set by the new RRC parameters may be as follows:

[0048] <Option 3-1> The number of pieces of information set in the new RRC parameter may be one. In this case, terminal 20 can determine the measurement bandwidth based only on the information set in RRC.

[0049] <Option 3-2> The number of pieces of information set by the new RRC parameters may be two or more. That is, multiple sets of information are set by the RRC. In this case, terminal 20 selects the measurement bandwidth from the multiple pieces of information set by the RRC.

[0050] A value may be specified from a set based on at least one of DCI and MAC-CE. In this case, terminal 20 selects the measurement bandwidth based on the information specified in at least one of DCI and MAC-CE.

[0051] According to this embodiment, the bandwidth to be measured by terminal 20 can be appropriately set.

[0052] (Example 2) This embodiment describes an example of adding MAC-CE to activate or update the measurement bandwidth in RSSI or CO measurements.

[0053] The added MAC-CE may include at least one of the following pieces of information:

[0054] The first piece of information is identification information for identifying information related to the measurement bandwidth. This information related to the measurement bandwidth may be, for example, the BWP ID, Scell ​​ID, or Serving Cell Index.

[0055] The second piece of information is a value indicating the measurement bandwidth. This value is, for example, RIV (Rapid Operating Value).

[0056] The third piece of information is the measurement bandwidth, expressed in Hz.

[0057] The fourth piece of information is a value indicating that the activated BWP is applied. For example, a specific index (e.g., "00") may be the value indicating that the activated BWP is applied. This allows terminal 20 to measure RSSI, CO, etc., based on the measurement bandwidth of the activated BWP at the time of measurement, when a specific index is specified in MAC-CE.

[0058] <Option 1> The number of candidate values ​​included in MAC-CE may be as follows:

[0059] <Option 1-1> The number of possible values ​​included in MAC-CE may be 32. That is, the number of possible values ​​included in MAC-CE may be the same as the maximum number of configurable Scells. In this case, the value included in MAC-CE is a 5-bit value.

[0060] Figure 8 is a diagram illustrating the MAC-CE instructions for Option 1-1 of Example 2. The added MAC-CE consists of one octet and includes a 3-bit reserved item and a 5-bit measurement bandwidth specification item.

[0061] <Option 1-2> The number of possible values ​​included in MAC-CE may be 4. That is, the number of possible values ​​included in MAC-CE may be the same as the maximum number of configurable BWPs. In this case, the value included in MAC-CE is a 2-bit value.

[0062] This MAC-CE may represent a value selected from a set of multiple candidate values ​​set in a higher layer such as RRC, as shown in Option 3-2 of Example 1.

[0063] According to this embodiment, the bandwidth measured by terminal 20 can be dynamically changed.

[0064] (Example 3) This embodiment describes an example of adding a DCI item to specify the measurement bandwidth in RSSI or CO measurements.

[0065] The additional DCI items may include at least one of the following pieces of information:

[0066] The first piece of information is identification information for identifying information related to the measurement bandwidth. This information related to the measurement bandwidth may be, for example, the BWP ID, Scell ​​ID, or Serving Cell Index.

[0067] The second piece of information is a value indicating the measurement bandwidth. This value is, for example, RIV (Rapid Operating Value).

[0068] The third piece of information is the measurement bandwidth, expressed in Hz.

[0069] The fourth piece of information is a value indicating that the activated BWP is applied. For example, a specific index (e.g., "00") may be the value indicating that the activated BWP is applied. Alternatively, the activated BWP may be applied if the DCI received by terminal 20 does not contain that item. This allows terminal 20 to measure RSSI, CO, etc., based on the measurement bandwidth of the activated BWP at the time of measurement, either when a specific index is specified in the DCI or when the received DCI does not contain that item.

[0070] <Option 1> The number of possible values ​​to be set in the DCI item may be as follows:

[0071] <Option 1-1> The number of possible values ​​that can be set in a DCI item may be 32. In other words, the number of possible values ​​that can be set in a DCI item may be the same as the maximum number of configurable Scells. In this case, the value set in the DCI item is a 5-bit value.

[0072] <Option 1-2> The number of possible values ​​to be set in the DCI field may be 4. That is, the number of possible values ​​to be set in the DCI field may be the same as the maximum number of BWPs that can be set. In this case, the value set in the DCI field is a 2-bit value.

[0073] This DCI item may represent a value selected from a set of multiple candidate values ​​set in a higher layer, such as RRC, as shown in Option 3-2 of Example 1.

[0074] According to this embodiment, the bandwidth measured by terminal 20 can be changed more dynamically than in embodiment 2.

[0075] In this embodiment, any arbitrary names can be used for the RRC parameter names, MAC-CE names, DCI item names, etc.

[0076] The method according to this embodiment may be limited to a specific frequency band (e.g., FR2-2), or it may be limited to a specific subcarrier interval (at least one of the subcarrier intervals of 120kHz, 480kHz, and 960kHz).

[0077] The method according to this embodiment may be limited to terminals (or IAB nodes with terminal functionality) that have transmitted a specific terminal capability signaling. For example, it may be limited to terminals that have reported supporting at least one of the operations of Example 1, Example 2, and Example 3.

[0078] (Device configuration) Next, we will describe an example of the functional configuration of the base station 10 and terminal 20 that perform the processes and operations described above. The base station 10 and terminal 20 include functions to perform the embodiments described above. However, the base station 10 and terminal 20 may each be equipped with only one of the proposed functions from the embodiments.

[0079] <Base station 10> Figure 9 shows an example of the functional configuration of a base station. As shown in Figure 9, 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 Figure 9 is merely an example. The names of the functional categories and functional units can be anything as long as they can perform the operations according to the embodiment of the present invention. The transmitting unit 110 and the receiving unit 120 may be called the communication unit.

[0080] The transmitting unit 110 includes the function of generating a signal to be transmitted to the terminal 20 and transmitting the signal wirelessly. The receiving unit 120 includes the function of receiving various signals transmitted from the terminal 20 and obtaining information from the received signals, for example, information of a higher layer. The transmitting unit 110 also has the function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals, DL data, etc. to the terminal 20. The transmitting unit 110 also transmits setting information, etc., as described in the embodiment.

[0081] The setting unit 130 stores pre-configured setting information and various setting information to be transmitted to the terminal 20 in a storage device and reads it from the storage device as needed. The control unit 140 performs control of the entire base station 10, including control related to signal transmission and reception. The signal transmission function unit of the control unit 140 may be included in the transmission unit 110, and the signal reception function unit of the control unit 140 may be included in the reception unit 120. The transmission unit 110 and the reception unit 120 may also be called the transmitter and receiver, respectively.

[0082] <Terminal 20> Figure 10 shows an example of the functional configuration of a terminal. As shown in Figure 10, 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 Figure 10 is merely an example. The names of the functional categories and functional units can be anything as long as they can perform the operations according to the embodiment of the present invention. The transmitting unit 210 and the receiving unit 220 may be called the communication unit.

[0083] The transmitting unit 210 creates a transmission signal from the transmission data and transmits the transmission signal wirelessly. The receiving unit 220 wirelessly receives various signals and obtains signals from higher layers from the received physical layer signals. The transmitting unit 210 also transmits a HARQ-ACK, and the receiving unit 220 receives the configuration information and the like as described in the embodiment.

[0084] The setting unit 230 stores various setting information received from the base station 10 by the receiving unit 220 in a storage device and reads it from the storage device as needed. The setting unit 230 also stores pre-set setting information. The control unit 240 controls the entire terminal 20, including control related to signal transmission and reception. The signal transmission function in the control unit 240 may be included in the transmission unit 210, and the signal reception function in the control unit 240 may be included in the reception unit 220. The transmission unit 210 and the reception unit 220 may also be called the transmitter and receiver, respectively.

[0085] The terminal or base station of this embodiment may be configured as one of the terminals or base stations described in the following sections. Furthermore, the following communication methods may be implemented.

[0086] <Configuration of this embodiment> (Section 1) A receiving unit that receives information indicating the frequency bandwidth in the measurement of the communication environment from a base station, The system includes a transmitting unit that transmits information indicating the measurement results measured in the aforementioned frequency bandwidth to the base station. Terminal. (Section 2) The receiving unit receives information indicating the frequency bandwidth as RRC, MAC-CE, or DCI. The terminal described in paragraph 1. (Section 3) The system includes a control unit that selects a frequency bandwidth specified by the MAC-CE or DCI from a plurality of pieces of information indicating the frequency bandwidth set by the RRC, The transmitting unit transmits information indicating the measurement results measured in the frequency bandwidth selected by the control unit to the base station. The terminal described in paragraph 2. (Section 4) A transmitting unit that transmits information indicating the frequency bandwidth in the measurement of the communication environment to a terminal, The system includes a receiving unit that receives information from the terminal indicating the measurement results measured in the aforementioned frequency bandwidth. Base station. (Section 5) The steps include receiving information from a base station indicating the frequency bandwidth in the measurement of the communication environment, The process includes the step of transmitting information indicating the measurement results measured in the aforementioned frequency bandwidth to the base station. The communication method used by the terminal.

[0087] Any of the above configurations provides a technique that enables measurement in an appropriate frequency bandwidth. According to paragraph 2, information indicating the frequency bandwidth can be flexibly set or specified. According to paragraph 3, it is possible to flexibly select from multiple pieces of information indicating a pre-set frequency bandwidth.

[0088] (Hardware configuration) The block diagrams (Figures 9 and 10) used in the description of the above embodiments show functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one device that is physically or logically coupled, or it may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wired or wireless connections). A functional block may be realized by combining the one or more devices with software.

[0089] Functions include, but are not limited to, judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, assumption, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating (mapping), and assigning. For example, a functional block (configuration part) that enables transmission is called a transmitting unit or transmitter. As mentioned above, the method of implementation is not particularly limited.

[0090] For example, the base station 10, terminal 20, etc. in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure. Figure 11 is a diagram showing an example of the hardware configuration of the base station 10 and terminal 20 according to 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.

[0091] In the following explanation, the term "device" can be replaced with "circuit," "device," "unit," etc. The hardware configuration of the base station 10 and terminal 20 may include one or more of the devices shown in the figure, or it may be configured without some of the devices.

[0092] Each function in the base station 10 and terminal 20 is realized by loading predetermined software (programs) onto hardware such as the processor 1001 and storage device 1002, which allows the processor 1001 to perform calculations, control communication by the communication device 1004, and control at least one of the reading and writing of data in the storage device 1002 and auxiliary storage device 1003.

[0093] The processor 1001 controls the entire computer, for example, by running an operating system. The processor 1001 may consist of a central processing unit (CPU) that includes interfaces with peripheral devices, control devices, arithmetic units, registers, etc. For example, the control unit 140, control unit 240, etc., described above may be implemented by the processor 1001.

[0094] Furthermore, the processor 1001 reads programs (program code), software modules, or data from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002, and executes various processes accordingly. The program used is one that causes a computer to execute at least a part of the operations described in the above embodiment. For example, the control unit 140 of the base station 10 shown in Figure 9 may be implemented by a control program stored in the storage device 1002 and operated by the processor 1001. Also, for example, the control unit 240 of the terminal 20 shown in Figure 10 may be implemented by a control program stored in the storage device 1002 and operated by the processor 1001. Although the above processes have been described as being executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The program may be transmitted from the network via a telecommunications line.

[0095] The storage device 1002 is a computer-readable recording medium and may consist of at least one of the following: ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. The storage device 1002 may also be called a register, cache, 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 this disclosure.

[0096] The auxiliary storage device 1003 is a computer-readable recording medium and may consist of at least one of the following: an optical disc such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disc, a digital multipurpose disc, a Blu-ray® disc), a smart card, flash memory (e.g., a card, a stick, a key drive), a floppy® disk, a magnetic strip, etc. The above-mentioned storage medium may also be a database, server, or other suitable medium that includes at least one of the storage device 1002 and the auxiliary storage device 1003.

[0097] The communication device 1004 is hardware (transceiver / receiver 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, communication module, etc. The communication device 1004 may include high-frequency switches, duplexers, filters, frequency synthesizers, etc., to implement at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the transmit / receive antenna, amplifier section, transmit / receive section, transmission path interface, etc., may be implemented by the communication device 1004. The transmit / receive section may be implemented with physically or logically separated transmitting and receiving sections.

[0098] The input device 1005 is an input device that accepts input from an external source (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to an external source (e.g., a display, speaker, LED lamp, etc.). The input device 1005 and the output device 1006 may be configured as an integrated unit (e.g., a touch panel).

[0099] Furthermore, 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 different buses may be configured for each device.

[0100] Furthermore, the base station 10 and terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array), and some or all of each functional block may be realized by such hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0101] Figure 12 shows an example of the configuration of vehicle 2001. As shown in Figure 12, vehicle 2001 comprises 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. Each aspect / embodiment described in this disclosure may be applied to a communication device mounted on vehicle 2001, for example, to the communication module 2013.

[0102] The drive unit 2002 consists 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 the rear wheels based on the operation of the steering wheel, which is operated by the user.

[0103] The electronic control unit 2010 consists of a microprocessor 2031, memory (ROM, RAM) 2032, and communication ports (IO ports) 2033. Signals from various sensors 2021 to 2029 installed in the vehicle 2001 are input to the electronic control unit 2010. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

[0104] Signals from various sensors 2021-2029 include current signals from current sensor 2021 which senses motor current, front and rear wheel rotation speed signals obtained by rotation speed sensor 2022, front and rear wheel air pressure signals obtained by air pressure sensor 2023, vehicle speed signals obtained by vehicle speed sensor 2024, acceleration signals obtained by acceleration sensor 2025, accelerator pedal depression signals obtained by accelerator pedal sensor 2029, brake pedal depression signals obtained by brake pedal sensor 2026, shift lever operation signals obtained by shift lever sensor 2027, and detection signals obtained by object detection sensor 2028 for detecting obstacles, vehicles, pedestrians, etc.

[0105] The Information Services Unit 2012 consists of various devices for providing various types of information, such as driving information, traffic information, and entertainment information, including a car navigation system, audio system, speakers, television, and radio, and one or more ECUs that control these devices. The Information Services Unit 2012 uses information acquired from external devices via a communication module 2013, etc., to provide various multimedia information and multimedia services to the occupants of the vehicle 2001.

[0106] The driver assistance system unit 2030 consists of various devices that provide functions to prevent accidents or reduce the driver's workload, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g., GNSS), 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 driver assistance system unit 2030 also sends and receives various information via the communication module 2013 to realize driver assistance functions or autonomous driving functions.

[0107] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via its communication port. For example, the communication module 2013 sends and receives data via its communication port 2033 to the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, the microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021-29 provided in the vehicle 2001.

[0108] 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 can send and receive various types of 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 or a mobile station.

[0109] The communication module 2013 transmits current signals from current sensors input to the electronic control unit 2010 to an external device via wireless communication. The communication module 2013 also transmits, via wireless communication, other signals input to the electronic control unit 2010, including front and rear wheel rotation speed signals obtained by the rotation speed sensor 2022, front and rear wheel air pressure signals obtained by the air pressure sensor 2023, vehicle speed signals obtained by the vehicle speed sensor 2024, acceleration signals obtained by the acceleration sensor 2025, accelerator pedal depression signals obtained by the accelerator pedal sensor 2029, brake pedal depression signals obtained by the brake pedal sensor 2026, shift lever operation signals obtained by the shift lever sensor 2027, and detection signals obtained by the object detection sensor 2028 for detecting obstacles, vehicles, pedestrians, etc.

[0110] The communication module 2013 receives various information (traffic information, signal information, distance information, etc.) transmitted from an external device and displays it on the information service unit 2012 installed in the vehicle 2001. The communication module 2013 also stores the various information received from the external device in memory 2032, which is available to 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., installed in the vehicle 2001.

[0111] (Supplement to the embodiment) While embodiments of the present invention have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art will understand various modifications, alterations, alternatives, substitutions, etc. Specific numerical examples have been used to facilitate understanding of the invention, but unless otherwise specified, these numerical values ​​are merely examples, and any appropriate values ​​may be used. The division of items in the above description is not essential to the present invention, and matters described in two or more items may be combined as needed, and matters described in one item may be applied to matters described in another item (as long as they do not contradict each other). The boundaries of functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries of physical parts. The operation of multiple functional units may be physically performed by one part, or the operation of one functional unit may be physically performed by multiple parts. Regarding the processing procedures described in the embodiments, the order of processing may be changed as long as it does not contradict each other. For the convenience of explaining the processing, 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 according to an embodiment of the present invention and the software operated by the processor of the terminal 20 according to an embodiment of the present invention may be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server, or any other suitable storage medium.

[0112] Furthermore, the notification of information is not limited to the embodiments / models described herein and may be carried out by other methods. For example, the notification of information may be carried out 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, broadcast information (MIB (Master Information Block), SIB (System Information Block))), other signals, or combinations thereof. Also, RRC signaling may be called RRC messages, and may be, for example, RRC Connection Setup messages, RRC Connection Reconfiguration messages, etc.

[0113] Each aspect / embodiment described in this disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (where x is, for example, an integer or 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)), and IEEE This may apply to at least one system utilizing 802.20, UWB (Ultra-WideBand), Bluetooth®, or other appropriate systems, and to next-generation systems extended, modified, created, or defined based thereon. It may also apply to a combination of multiple systems (for example, a combination of at least one of LTE and LTE-A with 5G).

[0114] The processing procedures, sequences, flowcharts, etc., of each aspect / embodiment described herein may be reordered, provided they are consistent with each other. For example, the methods described herein present various step elements in an exemplary order and are not limited to that specific order.

[0115] In this specification, specific operations performed by the base station 10 may, in some cases, be performed by its upper node. In 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 can be performed by the base station 10 and at least one of the other network nodes (for example, an MME or S-GW, but not limited to these). Although the above example illustrates the case where there is one other network node besides the base station 10, the other network node may be a combination of multiple other network nodes (for example, an MME and an S-GW).

[0116] The information or signals 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 and output via multiple network nodes.

[0117] Input and output information may be stored in a specific location (e.g., memory) or managed using a management table. Input and output information may be overwritten, updated, or appended to. Output information may be deleted. Input information may be transmitted to other devices.

[0118] The determination in this disclosure may be made by a value represented by one bit (0 or 1), by a boolean value (true or false), or by a numerical comparison (for example, a comparison with a predetermined value).

[0119] Software should be broadly interpreted 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, and so on, whether they are called software, firmware, middleware, microcode, hardware description languages, or by any other name.

[0120] Furthermore, software, instructions, information, etc., may be transmitted and received via a transmission medium. For example, if software is transmitted from a website, server, or other remote source using at least one of wired technology (such as coaxial cable, fiber optic cable, twisted pair, or digital subscriber line (DSL)) and wireless technology (such as infrared or microwave), then at least one of these wired and wireless technologies is included in the definition of a transmission medium.

[0121] The information, signals, etc. described in this disclosure may be represented using any of the various different techniques. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that 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.

[0122] In addition, terms used 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 the channel and symbol may be a signal (signaling). Also, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, cell, frequency carrier, etc.

[0123] The terms “system” and “network” as used in this disclosure are interchangeable.

[0124] Furthermore, the information, parameters, etc., described in this disclosure may be expressed using absolute values, relative values ​​from a given value, or other corresponding information. For example, wireless resources may be indicated by an index.

[0125] The names used for the parameters described above are not restrictive in any way. Furthermore, the formulas and other expressions using these parameters may differ from those expressly disclosed in this disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, and therefore, the various names assigned to these various channels and information elements are not restrictive in any way.

[0126] In this disclosure, terms such as "base station (BS)", "wireless 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", and "component carrier" may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0127] A base station can accommodate one or more (e.g., three) cells. If a base station accommodates multiple cells, the entire coverage area of ​​the base station can be divided into several smaller areas, each of which may also be provided with communication services by a base station subsystem (e.g., a Remote Radio Head (RRH)). The terms “cell” or “sector” refer to part or all of the coverage area of ​​at least one of the base station and / or base station subsystems that provide communication services in that coverage.

[0128] In this disclosure, terms such as "Mobile Station (MS)," "user terminal," "User Equipment (UE)," and "terminal" may be used interchangeably.

[0129] 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 several other appropriate terms.

[0130] At least one of the base station and the mobile station may be called 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 body, the mobile body itself, etc. The mobile body may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile body (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 operation. 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.

[0131] Furthermore, the term "base station" in this disclosure may be interpreted as "user terminal." For example, the various aspects / embodiments of this 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), V2X (Vehicle-to-Everything), etc.). In this case, the terminals 20 may have the functions that the base station 10 has. Also, terms such as "uplink" and "downlink" may be interpreted as terms corresponding to terminal-to-terminal communication (for example, "side"). For example, uplink channel, downlink channel, etc., may be interpreted as side channel.

[0132] Similarly, the term "user terminal" in this disclosure may be replaced with "base station." In this case, the base station may be configured to have the same functions as the user terminal described above.

[0133] As used in this disclosure, the terms “determining” and “determining” may encompass a wide variety of actions. “Determining” may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiry (e.g., searching in a table, database, or other data structure), and ascertaining. “Determining” may also include, for example, receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, and accessing (e.g., accessing data in memory). Furthermore, "judgment" and "decision" can include considering something as having been "judged" or "decided" after resolving, selecting, choosing, establishing, comparing, etc. In other words, "judgment" and "decision" can include considering something as having been "judged" or "decided" after some action. Also, "judgment (decision)" can be reinterpreted as "assuming," "expecting," or "considering."

[0134] The terms “connected,” “coupled,” or any variation thereof, mean 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” with each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, “connection” may be reinterpreted as “access.” As used in this disclosure, two elements may be considered to be “connected” or “coupled” with each other using at least one of one or more wires, cables, and printed electrical connections, and, in some non-limiting and non-exclusive examples, electromagnetic energy having wavelengths in the radio frequency domain, microwave domain, and optical (both visible and invisible) domain.

[0135] The reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot depending on the applicable standard.

[0136] In this disclosure, the phrase "based on" does not mean "based solely on" unless otherwise specified. In other words, the phrase "based on" means both "based solely on" and "based at least on."

[0137] Any reference to elements using the designations “first,” “second,” etc., as used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Accordingly, references to the first and second elements do not imply that only two elements may be employed, or that the first element must precede the second element in any way.

[0138] In the configuration of each of the above devices, "means" may be replaced with "part," "circuit," "device," etc.

[0139] Where the terms “include,” “including,” and variations thereof are used in this disclosure, these terms are intended to be inclusive, as is the term “comprising.” Furthermore, the term “or” as used in this disclosure is not intended to mean exclusive OR.

[0140] A wireless frame may consist of one or more frames in the time domain. Each of these frames in the time domain may be called a subframe. A subframe may further consist 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.

[0141] Numerical logic may be communication parameters applied to at least one of the transmission and reception of a signal or channel. Numerical logic may include, 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 configuration, specific filtering processes performed by the transceiver in the frequency domain, and specific windowing processes performed by the transceiver in the time domain.

[0142] A slot may consist of one or more symbols in the time domain (such as OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.). A slot may also be a time unit based on neurology.

[0143] A slot may include multiple minislots. Each minislot may consist of one or more symbols in the time domain. Minislots may also be called subslots. Minislots 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.

[0144] Wireless frames, subframes, slots, minislots, and symbols all represent units of time when transmitting a signal. Different names may be used for each of these terms.

[0145] For example, one subframe may be called a Transmission Time Interval (TTI), multiple consecutive subframes may be called a TTI, or one slot or one mini-slot may be called a TTI. In other words, at least one of a subframe and a TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, mini-slot, etc., instead of a subframe.

[0146] Here, TTI refers to, for example, the smallest unit of time for scheduling in wireless communication. For example, in an LTE system, the base station schedules each terminal 20 to allocate wireless resources (such as the frequency bandwidth and transmission power available to each terminal 20) in TTI units. However, the definition of TTI is not limited to this.

[0147] TTI may be a transmission time unit for channel-encoded data packets (transport blocks), code blocks, code words, etc., or it may be a processing unit for scheduling, link adaptation, etc. Given a TTI, the actual time interval (e.g., number of symbols) to which the transport block, code block, code word, etc. are mapped may be shorter than the given TTI.

[0148] Furthermore, if one slot or one mini-slot is referred to as TTI, then one or more TTIs (i.e., one or more slots or one or more mini-slots) may constitute the minimum time unit of scheduling. In addition, the number of slots (number of mini-slots) that constitute the minimum time unit of scheduling may be controlled.

[0149] A TTI with a time length of 1ms may also be called a normal TTI, long TTI, normal subframe, long subframe, slot, etc. A TTI shorter than a normal TTI may also be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, mini slot, sub slot, slot, etc.

[0150] Furthermore, long TTIs (e.g., normal TTIs, subframes, etc.) may be interpreted as TTIs with a time length exceeding 1 ms, and short TTIs (e.g., shortened TTIs, etc.) may be interpreted as TTIs with a TTI length less than that of a long TTI but 1 ms or more.

[0151] A resource block (RB) is a resource allocation unit in the time domain and frequency domain, and in the frequency domain, it may contain one or more consecutive subcarriers. The number of subcarriers in an RB may be the same regardless of the neurology, for example, 12. The number of subcarriers in an RB may be determined based on the neurology.

[0152] Furthermore, the time domain of RB may contain one or more symbols and may be the length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc., may each consist of one or more resource blocks.

[0153] One or more RBs may also be called a Physical RB (PRB), Sub-Carrier Group (SCG), Resource Element Group (REG), PRB pair, RB pair, etc.

[0154] Furthermore, a resource block may consist of one or more resource elements (REs). For example, one RE may be a radio resource area comprising one subcarrier and one symbol.

[0155] A Bandwidth Part (BWP), also known as a partial bandwidth, may represent a subset of consecutive common resource blocks (RBs) for a particular neurology system in a given carrier. These common RBs may be identified by an index of the RBs relative to a common reference point of the carrier. The PRBs may be defined and numbered within a given BWP.

[0156] A BWP may include a BWP for UL (Ultraviolet Link) and a BWP for DL ​​(Download Link). One or more BWPs may be set for a terminal 20 within a single carrier.

[0157] At least one of the configured BWPs may be active, and terminal 20 does not need to be expected to send or receive a predetermined signal / channel outside of the active BWP. In this disclosure, terms such as "cell" and "carrier" may be read as "BWP".

[0158] The structures described above, such as wireless frames, subframes, slots, minislots, and symbols, are merely illustrative. For example, the number of subframes included in a wireless frame, the number of slots per subframe or wireless 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, and the number of symbols, symbol length, and cyclic prefix (CP) length within a TTI can be varied in various ways.

[0159] In this disclosure, if articles are added through translation, such as a, an, and the in English, this disclosure may include the fact that the noun following these articles is plural.

[0160] In this disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "combine" may be interpreted similarly to "different."

[0161] Each aspect / embodiment described herein may be used individually, in combination, or switched between as needed during implementation. Furthermore, notification of specific information (e.g., notification that "X is") is not limited to explicit notification, but may also be implicit (e.g., by not providing such notification).

[0162] Although the present disclosure has been described in detail above, it will be clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in modified and altered forms without departing from the intent and scope of the present disclosure as defined by the claims. Therefore, the descriptions in the present disclosure are illustrative and not intended to be restrictive in any way. (Section 1) A receiving unit that receives information indicating the frequency bandwidth in the measurement of the communication environment from a base station, The system includes a transmitting unit that transmits information indicating the measurement results measured in the aforementioned frequency bandwidth to the base station. Terminal. (Section 2) The receiving unit receives information indicating the frequency bandwidth as RRC, MAC-CE, or DCI. The terminal described in paragraph 1. (Section 3) The system includes a control unit that selects a frequency bandwidth specified by the MAC-CE or DCI from a plurality of pieces of information indicating the frequency bandwidth set by the RRC, The transmitting unit transmits information indicating the measurement results measured in the frequency bandwidth selected by the control unit to the base station. The terminal described in paragraph 2. (Section 4) A transmitting unit that transmits information indicating the frequency bandwidth in the measurement of the communication environment to a terminal, The system includes a receiving unit that receives information from the terminal indicating the measurement results measured in the aforementioned frequency bandwidth. Base station. (Section 5) The steps include receiving information from a base station indicating the frequency bandwidth in the measurement of the communication environment, The process includes the step of transmitting information indicating the measurement results measured in the aforementioned frequency bandwidth to the base station. The communication method used by the terminal. [Explanation of Symbols]

[0163] 10 base station 110 Transmitter 120 Receiver 130 Setting section 140 Control Unit 20 devices 210 Transmitter 220 Receiver 230 Setting section 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 Department 2004 Accelerator pedal 2005 Brake pedal 2006 Shift Lever 2007 Front Wheel 2008 Rear wheel 2009 Axle 2010 Electronic Control Unit 2012 Information Services Department 2013 Communication Module 2021 Current Sensor 2022 Rotation speed sensor 2023 Pneumatic Sensor 2024 Vehicle Speed ​​Sensor 2025 Accelerometer 2026 Brake Pedal Sensor 2027 Shift lever sensor 2028 Object Detection Sensor 2029 Accelerator pedal sensor 2030 Driver Support Systems Department 2031 Microprocessor 2032 memory (ROM, RAM) 2033 Communication port (I / O port)

Claims

1. A receiving unit that receives setting information indicating the frequency bandwidth in the measurement of the received signal strength index from the base station, The system includes a transmitting unit that transmits the measurement result of a received signal strength index measured using the frequency bandwidth set based on the setting information to the base station, In the above setting information, the frequency bandwidth in Hertz units is set as the RRC parameter. Terminal.

2. A transmitting unit that transmits setting information indicating the frequency bandwidth in the measurement of the received signal strength index to a terminal, The system includes a receiving unit that receives from the terminal the measurement result of a received signal strength index measured using the frequency bandwidth set based on the setting information, In the above setting information, the frequency bandwidth in Hertz units is set as the RRC parameter. Base station.

3. A transmitting unit that transmits setting information indicating the frequency bandwidth in the measurement of the received signal strength index to a terminal, A receiving unit that receives from the terminal the measurement result of a received signal strength index measured using the frequency bandwidth set based on the setting information, A base station equipped with, A receiving unit that receives the aforementioned setting information from the base station, A transmitting unit that transmits the measurement results to the base station, A terminal equipped with, Equipped with, In the above setting information, the frequency bandwidth in Hertz units is set as the RRC parameter. Communication system.

4. The steps include receiving setting information from the base station that indicates the frequency bandwidth in the measurement of the received signal strength index, The system includes the step of transmitting the measurement result of a received signal strength index measured using the frequency bandwidth set based on the setting information to the base station. In the above setting information, the frequency bandwidth in Hertz units is set as the RRC parameter. The communication method used by the terminal.

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