WO2024034031A1 - Terminal and wireless communication method - Google Patents

Abstract

A terminal according to the preset invention receives an activation request from a secondary cell, and if a quality measurement and reporting in a lower-order layer of a transition destination candidate cell have been completed, the terminal assumes that a transmission configuration display to be linked with a synchronization signal block used in the quality measurement is known, or applies the result of the quality measurement to the activation of the secondary cell.

Description

Terminal and wireless communication method

The present disclosure relates to a terminal and a wireless communication method that support expansion of wireless resource management.

The 3rd Generation Partnership Project (3GPP: registered trademark) specifies the 5th generation mobile communication system (5G, also known as New Radio (NR) or Next Generation (NG)), and furthermore specifies the next generation called Beyond 5G, 5G Evolution or 6G. Generation specifications are also being developed.

In 3GPP Release 18, with regard to radio resource management (RRM), mitigation (reduction) of the delay until secondary cell (SCell) activation delay (FR2 SCell activation delay) in FR2 (Frequency Range 2) will be considered. (Non-patent document 1).

Additionally, in 3GPP Release 17, inter-cell mobility (L1/L2 inter cell mobility) of terminals (User Equipment, UE) using Layer 1/Layer 2 was introduced.

Regarding RRM, some regulations when using FR2 require a relatively long time, so the issue is that the FR2 SCell activation delay is large. On the other hand, considering the L1/L2 inter cell mobility introduced in 3GPP Release 17, there is a possibility that the FR2 SCell activation delay can be alleviated.

Therefore, the following disclosure was made in view of this situation, and aims to provide a terminal and a wireless communication method that can alleviate the delay until activation of a secondary cell in a high frequency band such as FR2. .

One aspect of the present disclosure is that when the receiving unit (control signal/reference signal processing unit 240) that receives the activation request of the secondary cell and the lower layer quality measurement and reporting in the transition destination candidate cell have been completed, , a terminal (control unit 270) that assumes that the transmission configuration display associated with the synchronization signal block used in the quality measurement is known, or that applies the result of the quality measurement to the activation of the secondary cell (control unit 270); UE200).

One aspect of the present disclosure provides a step of receiving an activation request for a secondary cell, and, if quality measurement and reporting in a lower layer in a transition destination candidate cell have been completed, a synchronization signal block used for the quality measurement. The wireless communication method includes a step of assuming that a linked transmission configuration display is known, or applying a result of the quality measurement to activation of the secondary cell.

FIG. 1 is an overall schematic configuration diagram of a wireless communication system 10. As shown in FIG. FIG. 2 is a diagram showing frequency bands used in the wireless communication system 10. FIG. 3 is a diagram showing a configuration example of a radio frame, subframe, and slot used in the radio communication system 10. FIG. 4 is a functional block configuration diagram of the gNB 100 and the UE 200. FIG. 5 is a diagram illustrating an example of TCI state in a serving cell and a non-serving cell (in which a PCI different from that of the serving cell is set). FIG. 6 is a diagram illustrating an operation flow regarding mitigation of FR2 SCell activation delay according to operation example 1. FIG. 7 is a diagram illustrating an operation flow regarding mitigation of FR2 SCell activation delay according to operation example 2. FIG. 8 is a diagram illustrating an operation flow regarding mitigation of FR2 SCell activation delay according to operation example 3. FIG. 9 is a diagram illustrating an operation flow regarding mitigation of FR2 SCell activation delay according to operation example 4. FIG. 10 is a diagram showing an example of the hardware configuration of the gNB 100 and the UE 200. FIG. 11 is a diagram showing an example of the configuration of vehicle 2001.

Hereinafter, embodiments will be described based on the drawings. Note that the same functions and configurations are given the same or similar symbols, and the description thereof will be omitted as appropriate.

(1) Overall schematic configuration of wireless communication system FIG. 1 is an overall schematic configuration diagram of a wireless communication system 10 according to the present embodiment. The wireless communication system 10 is a wireless communication system that complies with 5G New Radio (NR), and includes a Next Generation-Radio Access Network 20 (hereinafter referred to as NG-RAN20) and a terminal 200 (hereinafter referred to as UE200, User Equipment, UE). Note that the wireless communication system 10 may be a wireless communication system that follows a system called Beyond 5G, 5G Evolution, or 6G.

NG-RAN 20 includes a radio base station 100 (hereinafter referred to as gNB 100). Note that the specific configuration of the wireless communication system 10 including the number of gNBs and UEs is not limited to the example shown in FIG. 1.

NG-RAN20 actually includes multiple NG-RAN Nodes, specifically gNB (or ng-eNB), and is connected to a 5G-compliant core network (5GC, not shown). Note that NG-RAN20 and 5GC may be simply expressed as "networks".

gNB100 is a 5G-compliant wireless base station, and performs 5G-compliant wireless communication with UE200. gNB100 and UE200 use Massive MIMO (Multiple-Input Multiple-Output), which generates a highly directional antenna beam (beam BM) by controlling radio signals transmitted from multiple antenna elements. It can support carrier aggregation (CA), which uses component carriers (CC) in a bundle, and dual connectivity (DC), which simultaneously communicates between the UE and two NG-RAN nodes.

Note that the type of DC may be Multi-RAT Dual Connectivity (MR-DC), which uses multiple radio access technologies, or NR-NR Dual Connectivity (NR-DC), which uses only NR. In addition, MR-DC may be E-UTRA-NR Dual Connectivity (EN-DC), where the eNB constitutes the master node (MN) and the gNB constitutes the secondary node (SN), or vice versa. -E-UTRA Dual Connectivity (NE-DC) may also be used.

Any gNB 100 may constitute a master node (MN), and the other gNB 100 may constitute a secondary node (SN).

A master cell group (MCG) and a secondary cell group (SCG) may be set in the DC. The MCG may include a primary cell (PCell), and the SCG may include a secondary cell (SCell).

Additionally, the SCell may include a primary/secondary cell (PSCell). PSCell is a type of SCell, but may be interpreted as a special SCell that has functions equivalent to PCell. Similar to PCell, PSCell may perform functions such as PUCCH (Physical Uplink Control Channel) transmission, contention-based random access procedure (CBRA), and Radio Link Monitoring (downlink radio quality monitoring) functions.

The gNB 100 can spatially and time-divisionally transmit multiple beams BM having different transmission directions (which may also be referred to simply as directions, radiation directions, coverage, etc.). Note that the gNB 100 may transmit multiple beams BM simultaneously.

Additionally, the wireless communication system 10 may support multiple frequency ranges (FR). FIG. 2 shows frequency bands used in the wireless communication system 10.

・FR1: 410 MHz to 7.125 GHz
・FR2
・FR2-1: 24.25 GHz to 52.6 GHz
・FR2-2: Over 52.6GHz ~ 71GHz
In FR1, Sub-Carrier Spacing (SCS) of 15, 30 or 60kHz is used, and a bandwidth (BW) of 5-100MHz may be used. FR2 is higher frequency than FR1 and may use a subcarrier spacing (SCS) of 60 or 120kHz (and may include 240kHz) and a bandwidth (BW) of 50-400MHz.

Note that SCS may also be interpreted as numerology. Numerology is defined in 3GPP TS38.300 and corresponds to one subcarrier spacing in the frequency domain.

Furthermore, the wireless communication system 10 may also support a frequency band higher than the frequency band of FR2-2.

When using a band over 52.6GHz, even if you apply Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM)/Discrete Fourier Transform-Spread (DFT-S-OFDM) with larger Sub-Carrier Spacing (SCS) good.

Furthermore, in a high frequency band such as FR2-2, as mentioned above, an increase in phase noise between carriers becomes a problem. This may require the application of a larger (wider) SCS or a single carrier waveform.

The larger the SCS, the shorter the symbol/CP (Cyclic Prefix) period and slot period (if the 14 symbol/slot configuration is maintained). FIG. 3 shows an example of the configuration of radio frames, subframes, and slots used in the radio communication system 10.

If the 14 symbol/slot configuration is maintained, the larger (wider) the SCS, the shorter the symbol period (and slot period). Note that the symbol period may also be referred to as symbol length, time direction, time domain, or the like. Further, the frequency direction may be called a frequency domain, resource block, subcarrier, BWP (Bandwidth part), or the like.

Frequency resources may include component carriers, subcarriers, resource blocks (RB), resource block groups (RBG), BWPs (Bandwidth parts), etc. The time resources may include symbols, slots, minislots, subframes, radio frames, DRX (Discontinuous Reception) periods, and the like.

Note that the number of symbols constituting one slot does not necessarily have to be 14 symbols (for example, 28 or 56 symbols). Also, the number of slots per subframe may vary depending on the SCS.

In the wireless communication system 10, a synchronization signal block (SSB (SS/PBCH Block)) consisting of a synchronization signal (SS) and a physical downlink channel (PBCH) may be used.

The SSB is periodically transmitted from the network mainly for the UE 200 to detect the cell ID and reception timing when starting communication. In NR, SSB is also used to measure the reception quality of each cell. The SSB transmission period (periodity) may be 5, 10, 20, 40, 80, 160 milliseconds, or the like. Note that the initial access UE 200 may be assumed to have a transmission cycle of 20 milliseconds.

Additionally, the wireless communication system 10 may support various operations related to radio resource management (RRM) defined in 3GPP TS38.133. Specifically, various quality measurements for RRM may also be supported. For example, RRM may include measurements based on SSB and/or Channel State Information-Reference Signal (CSI-RS). Such measurements may be performed in an STMC window according to SSB based RRM Measurement Timing Configuration (SMTC).

The SMTC may indicate periodicity/duration/offset information of the measurement window of the UE RRM measurement for each carrier frequency.

Additionally, a measurement interval called MG (Measurement Gap) may be applied to such measurements. The MG may be set for each UE, each FR, etc. The MG length (MGL) may be longer than the SMTC window. As MGL, for example, 1.5, 3, 3.5, 4, 5.5, 6ms may be set.

Additionally, the wireless communication system 10 may support inter-cell mobility (L1/L2 inter cell mobility) of the UE 200 based on layer 1/layer 2. For example, the UE 200 can transmit and receive uplink (UL)/downlink (DL) channels and/or reference signals between cells whose PCI (Physical Cell ID) is different from that of the serving cell. Therefore, if the RSRP (Reference Signal Received Power) of the non-serving cell is larger than that of the serving cell, the UE 200 can transmit and receive the channel and reference signal with the non-serving cell without handover.

(2) Functional block configuration of wireless communication system Next, the functional block configuration of the wireless communication system 10 will be explained. Specifically, the functional block configuration of UE 200 will be mainly explained. FIG. 4 is a functional block configuration diagram of the gNB 100 and the UE 200.

As shown in FIG. 4, the UE 200 includes a radio signal transmission/reception section 210, an amplifier section 220, a modulation/demodulation section 230, a control signal/reference signal processing section 240, an encoding/decoding section 250, a data transmission/reception section 260, and a control section 270. .

It should be noted that in FIG. 4, only the main functional blocks related to the description of the embodiment are shown, and the UE 200 (gNB 100) has other functional blocks (for example, a power supply unit, etc.). Moreover, FIG. 4 shows the functional block configuration of the UE 200, and please refer to FIG. 10 for the hardware configuration.

The wireless signal transmitting/receiving unit 210 transmits and receives wireless signals according to NR. The radio signal transmitting/receiving unit 210 uses Massive MIMO, which generates a highly directional beam by controlling radio (RF) signals transmitted from multiple antenna elements, and a carrier that uses multiple component carriers (CC) in a bundle. It can support aggregation (CA) and dual connectivity (DC), which allows simultaneous communication between the UE and two NG-RAN nodes.

The amplifier section 220 is composed of a PA (Power Amplifier)/LNA (Low Noise Amplifier), etc. Amplifier section 220 amplifies the signal output from modulation/demodulation section 230 to a predetermined power level. Furthermore, the amplifier section 220 amplifies the RF signal output from the radio signal transmitting/receiving section 210.

The modulation/demodulation unit 230 performs data modulation/demodulation, transmission power setting, resource block allocation, etc. for each predetermined communication destination (gNB 100, etc.). The modulation/demodulation unit 230 may apply Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM)/Discrete Fourier Transform-Spread (DFT-S-OFDM). Further, DFT-S-OFDM may be used not only for uplink (UL) but also for downlink (DL).

The control signal/reference signal processing unit 240 executes processing related to various control signals transmitted and received by the UE 200 and processing related to various reference signals transmitted and received by the UE 200.

Specifically, the control signal/reference signal processing unit 240 receives various control signals transmitted from the gNB 100 via a predetermined control channel, for example, a radio resource control layer (RRC) control signal. Furthermore, the control signal/reference signal processing unit 240 transmits various control signals to the gNB 100 via a predetermined control channel.

The control signal/reference signal processing unit 240 executes processing using reference signals (RS) such as Demodulation Reference Signal (DMRS) and Phase Tracking Reference Signal (PTRS).

DMRS is a known reference signal (pilot signal) between a terminal-specific base station and the terminal for estimating a fading channel used for data demodulation. PTRS is a terminal-specific reference signal for the purpose of estimating phase noise, which is a problem in high frequency bands.

In addition to DMRS and PTRS, the reference signal may include a Channel State Information-Reference Signal (CSI-RS), a Sounding Reference Signal (SRS), and a Positioning Reference Signal (PRS) for position information.

Additionally, the channels include a control channel and a data channel. Control channels include PDCCH (Physical Downlink Control Channel), PUCCH (Physical Uplink Control Channel), RACH (Random Access Channel, Downlink Control Information (DCI) including Random Access Radio Network Temporary Identifier (RA-RNTI)), and Physical Broadcast Channel (PBCH) etc. may be included.

Additionally, data channels include PDSCH and PUSCH (Physical Uplink Shared Channel). Data may refer to data transmitted over a data channel.

Additionally, the control signal/reference signal processing unit 240 can receive a secondary cell (SCell) activation request. In this embodiment, the control signal/reference signal processing section 240 may constitute a receiving section. Specifically, the control signal/reference signal processing unit 240 may receive the SCell activation command in any slot. The command may be implemented, for example, by a control element (CE) of a medium access control layer (MAC). Note that the activation may be requested in a lower layer such as DCI.

Furthermore, when the control signal/reference signal processing unit 240 receives an activation command in a certain slot (Slot n), it is in a state where it can transmit a CSI report by slot n+[X]. [X] may be defined as follows (see TS 38.133 Sec.8.3.1):

・T _HARQ (ms): Time from sending downlink data to acknowledgment (see TS 38.213)
・T _{activation_time} (ms): Delay time until SCell activation ・T _{CSI_Reporting} (ms): UE's CSI reporting time (downlink reference time, processing time, resource preparation period, etc.)

Note that T _{activation_time} may be called SCell activation delay, and particularly when using FR2, it may be called FR2 SCell activation delay.

Additionally, the control signal/reference signal processing unit 240 may transmit the capability information of the UE 200 to the network. In this embodiment, the control signal/reference signal processing unit 240 can transmit UE Capability Information regarding quality measurement to the gNB 100 based on RRM (see FIG. 1).

Specifically, the control signal/reference signal processing unit 240 can transmit UE Capability Information including time related to quality measurement to the network. In this embodiment, the control signal/reference signal processing section 240 constitutes a transmitting section. Assuming that L1/L2 inter cell mobility is supported, the time related to quality measurement transmitted as UE Capability Information is reduced compared to the normal case (specifically, the value of T _FineTiming described later). etc.).

The encoding/decoding unit 250 performs data division/concatenation, channel coding/decoding, etc. for each predetermined communication destination (gNB 100 or other gNB).

Specifically, the encoding/decoding unit 250 divides the data output from the data transmitting/receiving unit 260 into predetermined sizes, and performs channel coding on the divided data. Furthermore, the encoding/decoding section 250 decodes the data output from the modulation/demodulation section 230 and concatenates the decoded data.

The data transmitting and receiving unit 260 transmits and receives Protocol Data Units (PDUs) and Service Data Units (SDUs). Specifically, the data transceiver 260 transmits PDUs/SDUs in multiple layers (such as a medium access control layer (MAC), a radio link control layer (RLC), and a packet data convergence protocol layer (PDCP)). Assemble/disassemble etc. The data transmitting/receiving unit 260 also performs data error correction and retransmission control based on hybrid automatic repeat request (ARQ).

The control unit 270 controls each functional block that configures the UE 200. In particular, in this embodiment, the control unit 270 executes control regarding RRM. Specifically, the control unit 270 can shorten the time related to SCell activation on the premise that the UE 200 supports L1/L2 inter cell mobility.

More specifically, if the quality measurement and reporting at the lower layer (L1 and/or L2) in the candidate cell to which the UE 200 transitions is completed, the control unit 270 links it with the SSB used for the quality measurement. It may be assumed that the Transmission Configuration Indication (TCI) to be transmitted is known. Alternatively, the control unit 270 may apply the result of the quality measurement to the activation of the SCell.

More specifically, if L1-RSRP beam measurement/reporting of a gNB 100 (cell) with a different PCI is completed, even if the TCI state associated with the SSB used for the measurement is known, the control unit 270 good. Further, the control unit 270 may use the result of the TCI state for SCell activation.

In this way, the control unit 270 may perform operations that contribute to alleviating the delay until SCell activation (SCell activation delay). In particular, the control unit 270 can perform operations that contribute to alleviating the FR2 SCell activation delay.

For example, when there is no serving cell in FR2, which is a higher frequency band than FR1, and a specific downlink reference signal is used, the control unit 270 may reduce the time related to the quality measurement described above. Specifically, the value of T _FineTiming may be reduced. Note that the details of each parameter will be described later (the same applies hereinafter). The specific downlink reference signal is typically CSI-RS, but may be other downlink reference signals, or may be expanded to include SSB.

In addition, when independent beam management is applied in carrier aggregation (CA) using FR1 and FR2 or a band combination of FR2 and a specific downlink reference signal is used, the control unit 270 takes the time related to quality measurement. May be reduced. Specifically, the values of T _FineTiming , T _{L1-RSRP, measure} , and T _{L1-RSRP, report} may be reduced.

Additionally, the gNB 100 (control signal/reference signal processing unit 240) may transmit an SCell activation command, for example, MAC-CE, to the UE 200, or receive a CSI report or UE Capability Information from the UE 200.

(3) Operation of wireless communication system Next, the operation of the wireless communication system 10 will be explained. Specifically, the operation of the UE 200 regarding mitigation (reduction) of the FR2 SCell activation delay will be described.

(3.1) Assumptions and issues 3GPP Release 17 stipulates the following cases regarding RRM provisions in FR2.

- (i) If there is at least one active serving cell in the FR2 band - (ii) If there is at least one active serving cell in the FR2 band and the UE supports scellWithoutSSB and the SMTC is not known - (iii) ) When the PCell or PSCell is FR1/FR2 and the target Scell is known, and there is no active serving cell in the FR2 band (when the UE uses semi-persistent CSI-RS with CSI reporting)
- (iv) When the PCell or PSCell is FR1/FR2, the target Scell is known, and there is no active serving cell in the FR2 band (when the UE uses periodic CSI-RS with CSI reporting)
- (v) In the case of IBM between FR1/FR2 CA or FR2 band pair, target Scell is unknown and the value when UE performs CSI reporting using semi-persistent CSI-RS is E^s /Iot ≥ -2dB - (vi) In the case of IBM (independent beam management) between FR1/FR2 CA or FR2 band pair, target Scell is unknown and UE performs CSI reporting using periodic CSI-RS. When the value satisfies E^s/Iot ≧-2dB Considering L1/L2 inter cell mobility specified in 3GPP Release 17, FR2 SCell activation There is a possibility that the delay can be alleviated.

In particular, some of the provisions of FR2 require a relatively long time due to the following factors.

・T _FineTiming (ms): The first complete measurement of the available SSB corresponding to the TCI state after the UE completes processing of the activation instruction of the last received PDCCH TCI or PDSCH TCI (if applicable). - T _{L1-RSRP, measure} : L1-RSRP delay time (T _{L1-RSRP,Measurement_Period_SSB} or T _{L1-RSRP,Measurement_Period_CSI -RS} ). Specifically, the L1-RSRP measurement delay (TL1-RSRP_Measurement_Period_SSB, or TL1-RSRP_Measurement_Period_CSI-RS, where M=1 is applied) specified in 3GPP TS 38.133 Sec.9.5
・T _{L1-RSRP, report} : Time required to acquire CSI reporting resources Therefore, if L1-RSRP beam measurement/reporting of a base station with a different physical cell ID (PCI) has been completed, the The TCI state associated with SSB may be known. Further, the result of the TCI state may be used for SCell activation.

FIG. 5 shows an example of TCI state in a serving cell and a non-serving cell (a PCI different from that of the serving cell is set). As shown in FIG. 5, the UE may assume that TCI state #2 is known, or may use the result of TCI state #2 for SCell activation.

In addition, the time when the result can be considered valid may be in accordance with the existing Inter-cell SSB based L1-RSRP Reporting regulations (see TS 38.133 Sec.9.13.4.1), or may be reported to the network as UE Capability Information. .

(3.2) Operation example 1
FIG. 6 shows an operation flow regarding relaxation of FR2 SCell activation delay according to operation example 1. Specifically, this operation example corresponds to case (iii) regarding the RRM regulations in FR2 described above.

As shown in Figure 6, when the PCell or PSCell is FR1/FR2 and the target Scell is known and there is no active serving cell in the FR2 band, the UE uses semi-persistent CSI-RS for CSI reporting. In this case, T _{activation_time} may be determined as follows.

・3ms + max(T _{uncertainty_MAC} + T _FineTiming + 2ms, T _{uncertainty_SP} ), where T _{uncertainty_MAC} =0 and T _{uncertainty_SP} =0 if UE receives the SCell activation command, semi-persistent CSI-RS activation command and TCI state activation command at the Same time.
Here, the value of T _FineTiming may be set to 0. However, the value of T _FineTiming does not necessarily have to be 0, and may be a value reduced so that the FR2 SCell activation delay can be alleviated (the same applies hereinafter). Additionally, the applied T _FineTiming value may be reported by UE Capability Information.

(3.3) Operation example 2
FIG. 7 shows an operation flow regarding relaxation of FR2 SCell activation delay according to operation example 2. This operation example corresponds to case (iv) regarding the RRM regulations in FR2 mentioned above.

As shown in Figure 7, when the PCell or PSCell is FR1/FR2, the target Scell is known, and there is no active serving cell in the FR2 band, and the UE uses periodic CSI-RS for CSI reporting, T _{activation_time} may be determined as follows.

・max(T _{uncertainty_MAC} + 5ms + T _FineTiming , T _{uncertainty_RRC} + T _{RRC_delay} -T _HARQ ), where T _{uncertainty_MAC} =0 if UE receives the SCell activation command and TCI state activation commands at the same time.
Here, the value of T _FineTiming may be set to 0. Additionally, the applied T _FineTiming value may be reported by UE Capability Information.

(3.4) Operation example 3
FIG. 8 shows an operation flow regarding relaxation of FR2 SCell activation delay according to operation example 3. This operation example corresponds to case (v) regarding the RRM regulations in FR2 mentioned above.

As shown in Figure 8, in the case of IBM between FR1/FR2 CA or FR2 band pair, target Scell is unknown and the value when UE performs CSI reporting using semi-persistent CSI-RS is E^s /Iot ≧-2dB, T _{activation_time} may be determined as follows.

・6ms + T _{FirstSSB_MAX} + 15*T _{SMTC_MAX} + 8*T _rs + T _{L1-RSRP, measure} + T _{L1-RSRP, report} + T _HARQ + max(T _{uncertainty_MAC} + T _FineTiming + 2ms, T _{uncertainty_SP} ).
Here, T _FineTiming , T _{L1-RSRP, measure} , and T _{L1-RSRP, report} may be set to 0. Additionally, the applied T _FineTiming value may be reported by UE Capability Information.

(3.5) Operation example 4
FIG. 9 shows an operation flow regarding relaxation of FR2 SCell activation delay according to operation example 4. This operation example corresponds to case (vi) regarding the RRM regulations in FR2 mentioned above.

As shown in Figure 9, in the case of IBM between FR1/FR2 CA or FR2 band pair, target Scell is unknown and the value when UE performs CSI reporting using periodic CSI-RS is E^s/Iot. If ≧-2dB is satisfied, T _{activation_time} may be determined as follows.

・3ms + T _{FirstSSB_MAX} + 15*T _{SMTC_MAX} + 8*T _rs + T _{L1-RSRP, measure} + T _{L1-RSRP, report} + max {(T _HARQ + T _{uncertainty_MAC} + 5ms + T _FineTiming ), (T _{uncertainty_RRC} + T _{RRC_delay} )}.
Here, T _FineTiming , T _{L1-RSRP, measure} , and T _{L1-RSRP, report} may be set to 0. Additionally, the applied T _FineTiming value may be reported by UE Capability Information.

(4) Actions and Effects According to the embodiment described above, the following effects can be obtained. Specifically, if L1-RSRP beam measurement/reporting of gNB 100 (cell) with different PCI has been completed, UE 200 can assume that the TCI state associated with the SSB used for the measurement is known. Further, the UE 200 can also use the result of the TCI state for SCell activation.

Therefore, the time related to FR2 SCell activation delay (T _{activation_time} ) can be reduced. Specifically, the values of T _FineTiming , T _{L1-RSRP, measure} , and T _{L1-RSRP, report} used to determine T _{activation_time} can be determined to 0 (or a value lower than normal), resulting in FR2 SCell activation delay is shortened. That is, according to the UE 200, the delay until SCell activation in a high frequency band such as FR2 can be alleviated.

In particular, in the embodiment described above, the FR2 SCell activation delay can be reliably reduced for cases (iii) to (vi) of the case classification regarding the RRM provisions in FR2.

(5) Other Embodiments Although the embodiments have been described above, it is obvious to those skilled in the art that the embodiments are not limited to the description of the embodiments, and that various modifications and improvements can be made.

For example, in the embodiment described above, the operation related to alleviating the FR2 SCell activation delay has been described, but FR2 may be interpreted as one or both of FR2-1 and FR2-2. Furthermore, frequency ranges other than FR2 may be targeted.

For example, in the above description, the words configure, activate, update, indicate, enable, specify, and select may be used interchangeably. good. Similarly, link, associate, correspond, and map may be used interchangeably; allocate, assign, and monitor. , map may also be read interchangeably.

Further, the terms "specific", "dedicated", "UE specific", and "UE individual" may be interchanged. Similarly, common, shared, group-common, UE-common, and UE-shared may be interchanged.

In this disclosure, "precoding", "precoder", "weight (precoding weight)", "quasi-co-location (QCL)", "Transmission Configuration Indication state (TCI state)", "spatial "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", Terms such as "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", and "panel" are interchangeable. can be used.

Furthermore, the block configuration diagram (FIG. 4) used to explain the embodiment described above shows blocks in functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using one physically or logically coupled device, or may be realized using two or more physically or logically separated devices directly or indirectly (e.g. , wired, wireless, etc.) and may be realized using a plurality of these devices. The functional block may be realized by combining software with the one device or the plurality of devices.

Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, These include, but are not limited to, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning. I can't. For example, a functional block (configuration unit) that performs transmission is called a transmitting unit or a transmitter. In either case, as described above, the implementation method is not particularly limited.

Furthermore, the gNB 100 and UE 200 (the devices) described above may function as a computer that performs processing of the wireless communication method of the present disclosure. FIG. 10 is a diagram showing an example of the hardware configuration of the device. As shown in FIG. 10, the device may be configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

Note that in the following description, the word "apparatus" can be read as a circuit, a device, a unit, etc. The hardware configuration of the device may include one or more of the devices shown in the figure, or may not include some of the devices.

Each functional block of the device (see FIG. 4) is realized by any hardware element of the computer device or a combination of hardware elements.

In addition, each function in the device is performed by loading predetermined software (programs) onto hardware such as the processor 1001 and memory 1002, so that the processor 1001 performs calculations, controls communication by the communication device 1004, and controls the memory This is realized by controlling at least one of data reading and writing in the storage 1002 and the storage 1003.

The processor 1001, for example, operates an operating system to control the entire computer. The processor 1001 may be configured by a central processing unit (CPU) that includes an interface with peripheral devices, a control device, an arithmetic unit, registers, and the like.

Furthermore, the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes according to these. As the program, a program that causes a computer to execute at least part of the operations described in the above embodiments is used. Further, the various processes described above may be executed by one processor 1001, or may be executed by two or more processors 1001 simultaneously or sequentially. Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via a telecommunications line.

The memory 1002 is a computer-readable recording medium, and includes at least one of Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), Random Access Memory (RAM), etc. may be done. Memory 1002 may be called a register, cache, main memory, or the like. The memory 1002 can store programs (program codes), software modules, etc. that can execute a method according to an embodiment of the present disclosure.

The storage 1003 is a computer-readable recording medium, such as an optical disk such as a Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disk, a magneto-optical disk (such as a compact disk, a digital versatile disk, or a Blu-ray disk). (registered trademark disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, etc. Storage 1003 may also be called auxiliary storage. The above-mentioned recording medium may be, for example, a database including at least one of memory 1002 and storage 1003, a server, or other suitable medium.

The communication device 1004 is hardware (transmission/reception device) for communicating 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, network controller, network card, communication module, etc.

The communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be composed of.

The input device 1005 is an input device (eg, keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that performs output to the outside. Note that the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).

Further, each device such as the processor 1001 and the memory 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.

Furthermore, the device includes 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). A part or all of each functional block may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these hardwares.

Furthermore, the notification of information is not limited to the aspects/embodiments described in this disclosure, and may be performed using other methods. For example, information notification can be performed using physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), upper layer signaling (e.g., RRC signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB)), other signals, or a combination thereof. RRC signaling may also be referred to as RRC messages, such as RRC Connection Setup (RRC Connection Setup). ) message, RRC Connection Reconfiguration message, etc.

Each aspect/embodiment described in this disclosure includes Long Term Evolution (LTE), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system ( 5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (x is an integer or decimal, for example), Future Radio Access (FRA), New Radio (NR), W-CDMA (registered trademark) , GSM®, CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi®), IEEE 802.16 (WiMAX®), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth ( (registered trademark), other appropriate systems, and next-generation systems expanded based on these. Furthermore, a combination of multiple systems (for example, a combination of at least one of LTE and LTE-A with 5G) may be applied.

The order of the processing procedures, sequences, flowcharts, etc. of each aspect/embodiment described in this disclosure may be changed as long as there is no contradiction. For example, the methods described in this disclosure use an example order to present elements of the various steps and are not limited to the particular order presented.

In some cases, the specific operations performed by the base station in this disclosure may be performed by its upper node. In a network consisting of one or more network nodes including a base station, various operations performed for communication with a terminal are performed by the base station and other network nodes other than the base station (e.g., MME or It is clear that this can be done by at least one of the following: (conceivable, but not limited to) S-GW, etc.). Although the case where there is one network node other than the base station is illustrated above, it may be a combination of multiple other network nodes (for example, MME and S-GW).

Information, signals (information, etc.) can be output from an upper layer (or lower layer) to a lower layer (or upper layer). It may be input/output via multiple network nodes.

The input/output information may be stored in a specific location (for example, memory) or may be managed using a management table. Information that is input and output may be overwritten, updated, or additionally written. The output information may be deleted. The input information may be sent to other devices.

Judgment may be made using a value expressed by 1 bit (0 or 1), a truth value (Boolean: true or false), or a comparison of numerical values (for example, a predetermined value). (comparison with a value).

Each aspect/embodiment described in this disclosure may be used alone, in combination, or may be switched and used in accordance with execution. In addition, notification of prescribed information (for example, notification of "X") is not limited to being done explicitly, but may also be done implicitly (for example, not notifying the prescribed information). Good too.

Software includes instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name. , should be broadly construed to mean an application, software application, software package, routine, subroutine, object, executable, thread of execution, procedure, function, etc.

Additionally, software, instructions, information, etc. may be sent and received via a transmission medium. For example, if the software uses wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) to When transmitted from a server or other remote source, these wired and/or wireless technologies are included within the definition of transmission medium.

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. that may be referred to throughout the above description may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of the foregoing. It may also be represented by a combination of

Note that terms explained in this disclosure and terms necessary for understanding this disclosure may be replaced with terms that have the same or similar meanings. For example, at least one of the channel and the symbol may be a signal. Also, the signal may be a message. Further, a component carrier (CC) may also be called a carrier frequency, cell, frequency carrier, etc.

As used in this disclosure, the terms "system" and "network" are used interchangeably.

In addition, the information, parameters, etc. described in this disclosure may be expressed using absolute values, relative values from a predetermined value, or using other corresponding information. may be expressed. For example, radio resources may be indicated by an index.

The names used for the parameters mentioned above are not restrictive in any respect. Furthermore, the mathematical formulas etc. using these parameters may differ from those explicitly disclosed in this disclosure. Since the various channels (e.g. PUCCH, PDCCH, etc.) and information elements can be identified by any suitable designation, the various names assigned to these various channels and information elements are in no way exclusive designations. isn't it.

In this disclosure, "base station (BS)", "wireless base station", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", " "access point", "transmission point", "reception point", "transmission/reception point", "cell", "sector", "cell group", " The terms "carrier", "component carrier", etc. may be used interchangeably. A base station is sometimes referred to by terms such as macrocell, small cell, femtocell, and picocell.

A base station can accommodate one or more (eg, three) cells (also called sectors). If a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, and each smaller area is divided into multiple subsystems (e.g., small indoor base stations (Remote Radio Communication services can also be provided by Head: RRH).

The term "cell" or "sector" refers to part or all of the coverage area of a base station and/or base station subsystem that provides communication services in this coverage.

In the present disclosure, the base station transmitting information to the terminal may be read as the base station instructing the terminal to control/operate based on the information.

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

A mobile station is defined by a person skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

At least one of the base station and the mobile station may be called a transmitting device, receiving device, communication device, etc. Note that at least one of the base station and the mobile station may be a device mounted on a mobile body, the mobile body itself, or the like. The moving object may be a vehicle (e.g., a car, an airplane, etc.), an unmanned moving object (e.g., a drone, a self-driving car, etc.), or a robot (manned or unmanned). ). Note that at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

Additionally, the base station in the present disclosure may be read as a mobile station (user terminal, hereinafter the same). For example, communication between a base station and a mobile station is replaced with communication between multiple mobile stations (for example, it may be called Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.). Regarding the configuration, each aspect/embodiment of the present disclosure may be applied. In this case, the mobile station may have the functions that the base station has. Further, words such as "up" and "down" may be replaced with words corresponding to inter-terminal communication (for example, "side"). For example, uplink channels, downlink channels, etc. may be replaced with side channels (or side links).

Similarly, the mobile station in the present disclosure may be read as a base station. In this case, the base station may have the functions that the mobile station has.

A radio frame may be composed of one or more frames in the time domain. Each frame or frames in the time domain may be called a subframe. A subframe may further be composed of one or more slots in the time domain. A subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.

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

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

A slot may include multiple mini-slots. Each minislot may be made up of one or more symbols in the time domain. Furthermore, a mini-slot may also be called a sub-slot. A minislot may be made up of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be referred to as a PDSCH (or PUSCH) mapping type A. PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.

Radio frames, subframes, slots, minislots, and symbols all represent time units when transmitting signals. Other names may be used for the radio frame, subframe, slot, minislot, and symbol.

For example, one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, and one slot or minislot may be called a TTI. In other words, at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (for example, 1-13 symbols), or a period longer than 1ms. It may be. Note that the unit representing TTI may be called a slot, minislot, etc. instead of a subframe.

Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each user terminal) to each user terminal on a TTI basis. Note that the definition of TTI is not limited to this.

The TTI may be a unit of transmission time such as a channel-coded data packet (transport block), a code block, or a codeword, or may be a unit of processing such as scheduling or link adaptation. Note that when a TTI is given, the time interval (for example, the number of symbols) to which transport blocks, code blocks, code words, etc. are actually mapped may be shorter than the TTI.

Note that when one slot or one minislot is called a TTI, one or more TTIs (that is, one or more slots or one or more minislots) may be the minimum time unit for scheduling. Further, the number of slots (minislot number) that constitutes the minimum time unit of the scheduling may be controlled.

A TTI with 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 that is shorter than the normal TTI may be referred to as a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

Note that long TTI (e.g., normal TTI, subframe, etc.) may be read as TTI with a time length exceeding 1ms, and short TTI (e.g., shortened TTI, etc.) may be interpreted as TTI with a time length of less than the long TTI and 1ms. It may also be read as a TTI having a TTI length of the above length.

A resource block (RB) is a resource allocation unit in the time domain and frequency domain, and may include one or more continuous subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of the new merology, and may be 12, for example. The number of subcarriers included in an RB may be determined based on newerology.

Additionally, the time domain of an RB may include one or more symbols and may be one slot, one minislot, one subframe, or one TTI in length. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

Note that one or more RBs are classified into physical resource blocks (Physical RBs: PRBs), sub-carrier groups (Sub-Carrier Groups: SCGs), resource element groups (Resource Element Groups: REGs), PRB pairs, RB pairs, etc. May be called.

Additionally, a resource block may be configured by one or more resource elements (RE). For example, 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.

Bandwidth Part (BWP) (also called partial bandwidth, etc.) refers to a subset of contiguous common resource blocks for a certain numerology in a certain carrier. good. Here, the common RB may be specified by an RB index based on a common reference point of the carrier. PRBs may be defined in a BWP and numbered within that BWP.

BWP may include BWP for UL (UL BWP) and BWP for DL (DL BWP). One or more BWPs may be configured within one carrier for the UE.

At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal/channel outside the active BWP. Note that "cell", "carrier", etc. in the present disclosure may be replaced with "BWP".

The structures of radio frames, subframes, slots, minislots, symbols, etc. described above are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of symbols included in an RB, The number of subcarriers, the number of symbols within a TTI, the symbol length, the cyclic prefix (CP) length, and other configurations can be changed in various ways.

The terms "connected", "coupled", or any variations thereof, refer to any connection or coupling, direct or indirect, between two or more elements and to each other. It can include the presence of one or more intermediate elements between two elements that are "connected" or "coupled." The bonds or connections between elements may be physical, logical, or a combination thereof. For example, "connection" may be replaced with "access." As used in this disclosure, two elements may include one or more electrical wires, cables, and/or printed electrical connections, as well as in the radio frequency domain, as some non-limiting and non-inclusive examples. , electromagnetic energy having wavelengths in the microwave and optical (both visible and non-visible) ranges, and the like.

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

As used in this disclosure, the phrase "based on" does not mean "based solely on" unless explicitly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

"Means" in the configurations of each of the above devices may be replaced with "unit", "circuit", "device", etc.

As used in this disclosure, any reference to elements using the designations "first," "second," etc. does not generally limit the amount or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, reference to a first and second element does not imply that only two elements may be employed therein or that the first element must precede the second element in any way.

Where "include", "including" and variations thereof are used in this disclosure, these terms, like the term "comprising," are inclusive. It is intended that Furthermore, the term "or" as used in this disclosure is not intended to be exclusive or.

In the present disclosure, when articles are added by translation, such as a, an, and the in English, the present disclosure may include that the nouns following these articles are plural.

As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of operations. "Judgment" and "decision" include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, search, and inquiry. (e.g., searching in a table, database, or other data structure); In addition, "judgment" and "decision" refer to receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, and access. (accessing) (for example, accessing data in memory) may be considered to be a "judgment" or "decision." In addition, "judgment" and "decision" refer to resolving, selecting, choosing, establishing, comparing, etc. may be included. In other words, "judgment" and "decision" may include regarding some action as "judgment" and "decision". Further, "judgment (decision)" may be read as "assuming", "expecting", "considering", etc.

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 similarly to "different."

FIG. 11 shows an example of the configuration of the vehicle 2001. As shown in FIG. 11, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, an axle 2009, an electronic control unit 2010, Equipped with various sensors 2021 to 2029, an information service section 2012, and a communication module 2013.

The drive unit 2002 includes, 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 referred to as a steering wheel), and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.
The electronic control unit 2010 includes a microprocessor 2031, memory (ROM, RAM) 2032, and communication port (IO port) 2033. Signals from various sensors 2021 to 2027 provided in the vehicle are input to the electronic control unit 2010. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

Signals from various sensors 2021 to 2028 include current signals from current sensor 2021 that senses motor current, front and rear wheel rotation speed signals obtained by rotation speed sensor 2022, and front wheel rotation speed signals obtained by air pressure sensor 2023. and rear wheel air pressure signal, vehicle speed signal acquired by vehicle speed sensor 2024, acceleration signal acquired by acceleration sensor 2025, accelerator pedal depression amount signal acquired by accelerator pedal sensor 2029, and brake pedal sensor 2026. These include a brake pedal depression amount signal, a shift lever operation signal acquired by the shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028.

The Information Services Department 2012 provides various devices such as car navigation systems, audio systems, speakers, televisions, and radios that provide various information such as driving information, traffic information, and entertainment information, as well as one or more devices that control these devices. It consists of an ECU. The information service unit 2012 provides various multimedia information and multimedia services to the occupants of the vehicle 1 using information acquired from an external device via the communication module 2013 and the like.

The driving support system unit 2030 includes millimeter wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g. GNSS, etc.), map information (e.g. high definition (HD) maps, autonomous vehicle (AV) maps, etc.) ), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors that prevent accidents and reduce the driver's driving burden. It consists of various devices that provide functions for the purpose and one or more ECUs that control these devices. Further, the driving support system unit 2030 transmits and receives various information via the communication module 2013, and realizes a driving support function or an automatic driving function.

The communication module 2013 can communicate with the microprocessor 2031 and the components of the vehicle 1 via the communication port. For example, the communication module 2013 communicates with the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, which are included in the vehicle 2001, through the communication port 2033. Data is transmitted and received between the axle 2009, the microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and the sensors 2021 to 2028.

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, various information is transmitted and received with an external device via wireless communication. Communication module 2013 may be located either inside or outside electronic control unit 2010. The external device may be, for example, a base station, a mobile station, or the like.

The communication module 2013 transmits the current signal from the current sensor input to the electronic control unit 2010 to an external device via wireless communication. In addition, the communication module 2013 also receives the front wheel and rear wheel rotational speed signals acquired by the rotational speed sensor 2022, the front wheel and rear wheel air pressure signals acquired by the air pressure sensor 2023, and the vehicle speed sensor, which are input to the electronic control unit 2010. A vehicle speed signal obtained by the acceleration sensor 2024, an acceleration signal obtained by the acceleration sensor 2025, an accelerator pedal depression amount signal obtained by the accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by the brake pedal sensor 2026, and a shift lever. The shift lever operation signal acquired by the sensor 2027, the detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028 are also transmitted to the external device via wireless communication.

The communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from external devices, and displays it on the information service section 2012 provided in the vehicle. Communication module 2013 also stores various information received from external devices into memory 2032 that can be used by microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 controls the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, left and right front wheels 2007, and left and right rear wheels provided in the vehicle 2001. 2008, axle 2009, sensors 2021 to 2028, etc. may be controlled.

(Additional note)
The above disclosure may be expressed as follows.

The first feature is a receiving unit that receives a secondary cell activation request;
If the quality measurement and reporting in the lower layer in the transition destination candidate cell has been completed, it is assumed that the transmission configuration display associated with the synchronization signal block used for the quality measurement is known, or the result of the quality measurement is The terminal includes a control unit that applies to activation of a secondary cell.

A second feature is that in the first feature, when there is no serving cell in a second frequency range that is a higher frequency band than the first frequency range and a specific downlink reference signal is used, the control unit determines the quality of the downlink reference signal. Reduce time related to measurements.

A third feature is that in the first or second feature, the control unit performs carrier aggregation using a first frequency range and a second frequency range that is a higher frequency band than the first frequency range; Independent beam management is applied in the band combination of the second frequency range to reduce the time associated with said quality measurement when using a specific downlink reference signal.

A fourth feature, in the first to third features, includes a transmitter that transmits capability information including time related to the reduced quality measurement to the network.

Although the present disclosure has been described in detail above, it is clear for 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 modifications and variations without departing from the spirit and scope of the present disclosure as determined by the claims. Therefore, the description of the present disclosure is for the purpose of illustrative explanation and is not intended to have any limiting meaning on the present disclosure.

10 Wireless communication system 20 NG-RAN
100 gNB
200 U.E.
210 Wireless signal transmission/reception unit 220 Amplifier unit 230 Modulation/demodulation unit 240 Control signal/reference signal processing unit 250 Encoding/decoding unit 260 Data transmission/reception unit 270 Control unit 1001 Processor 1002 Memory 1003 Storage 1004 Communication device 1005 Input device 1006 Output device 1007 Bus 2001 Vehicle 2002 Drive unit 2003 Steering unit 2004 Accelerator pedal 2005 Brake pedal 2006 Shift lever 2007 Left and right front wheels 2008 Left and right rear wheels 2009 Axle 2010 Electronic control unit 2012 Information service department 2013 Communication module 2021 Current sensor 2022 Rotational 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 section 2031 Microprocessor 2032 Memory (ROM, RAM)
2033 communication port

Claims (5)

1. a receiving unit that receives a secondary cell activation request;
   If the quality measurement and reporting in the lower layer in the transition destination candidate cell has been completed, it is assumed that the transmission configuration display associated with the synchronization signal block used for the quality measurement is known, or the result of the quality measurement is A terminal comprising a control unit applied to activation of a secondary cell.
2. The control unit reduces the time related to the quality measurement when there is no serving cell in a second frequency range that is a higher frequency band than the first frequency range and a specific downlink reference signal is used. terminal.
3. The control unit may apply carrier aggregation using a first frequency range and a second frequency range having a higher frequency band than the first frequency range, or apply independent beam management in a band combination of the second frequency range. The terminal according to claim 1, wherein the time related to the quality measurement is reduced when using a specific downlink reference signal.
4. The terminal according to claim 2 or 3, further comprising a transmitter configured to transmit capability information including time related to the reduced quality measurement to a network.
5. receiving a secondary cell activation request;
   If the quality measurement and reporting in the lower layer in the transition destination candidate cell has been completed, it is assumed that the transmission configuration display associated with the synchronization signal block used for the quality measurement is known, or the result of the quality measurement is applying to activation of a secondary cell.

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