WO2020202397A1 - ユーザ装置及び通信方法 - Google Patents
ユーザ装置及び通信方法 Download PDFInfo
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- WO2020202397A1 WO2020202397A1 PCT/JP2019/014348 JP2019014348W WO2020202397A1 WO 2020202397 A1 WO2020202397 A1 WO 2020202397A1 JP 2019014348 W JP2019014348 W JP 2019014348W WO 2020202397 A1 WO2020202397 A1 WO 2020202397A1
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- WIPO (PCT)
- Prior art keywords
- secondary cell
- user device
- reactivated
- base station
- measurement result
- Prior art date
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0868—Hybrid systems, i.e. switching and combining
- H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0665—Feed forward of transmit weights to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0096—Indication of changes in allocation
- H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
Definitions
- the present invention relates to a user device and a communication method in a wireless communication system.
- NR New Radio
- PDSCH Physical Downlink Sharped Channel
- PDCCH Physical Downlink Control Channel
- SSB Synchronization Signal / Physical Broadcast Channel
- CSI-RS Channel State Information Reference Signal
- Beam forming is applied when doing.
- TCI Transmission Configuration Indication
- the 3GPP RAN4 Radio Resource Management defines the permissible time to complete the activation of the deactivated Secondary Cell (SCell). Specifically, it is stipulated that the user device 20 can send an accurate Channel State Information (CSI) report to the target SCell x seconds after the user device 20 receives the SCell activation command in slot n. There is. There is a need for technology that can reduce the time it takes to complete SCell activation after it has been deactivated.
- CSI Channel State Information
- a receiving unit that receives a reference signal from a secondary cell, a transmitting unit that transmits a measurement result of the reference signal, and a secondary cell after the transmitting unit transmits the measurement result. Is deactivated and the secondary cell is reactivated, and the time interval from the timing when the transmitter transmits the measurement result to the timing when the secondary cell is reactivated is within a predetermined time interval.
- a user apparatus including a control unit that selects a reception beam applied to the secondary cell when the transmission unit transmits the measurement result as a reception beam applied to the reactivated secondary cell.
- a technique capable of reducing the time from deactivation to the completion of SCell activation is provided.
- SS Synchronization signal
- PSS Primary SS
- SSS Secondary SS
- PBCH Physical broadcast channel
- PRACH Physical
- NR-SS NR-SS
- NR-PBCH Physical broadcast channel
- PRACH Physical
- the duplex system may be a TDD (Time Division Duplex) system, an FDD (Frequency Division Duplex) system, or other system (for example, Flexible Duplex, etc.). Method may be used.
- TDD Time Division Duplex
- FDD Frequency Division Duplex
- Method may be used.
- the method of transmitting a signal using the transmission beam may be digital beamforming for transmitting a signal obtained by multiplying the precoding vector (precoded by the precoding vector). It may be analog beamforming that realizes beamforming by using a variable phase shifter in an RF (Radio Frequency) circuit. Similarly, the method of receiving a signal using the received beam may be digital beamforming in which a predetermined weight vector is multiplied by the received signal, or beamforming is realized by using a variable phase device in the RF circuit. It may be analog beamforming. Hybrid beamforming, which combines digital beamforming and analog beamforming, may be applied for transmission and / or reception.
- transmitting a signal using a transmission beam may be transmitting a signal at a specific antenna port.
- receiving a signal using a receive beam may be receiving a signal at a particular antenna port.
- the antenna port refers to a logical antenna port or a physical antenna port defined by the 3GPP standard.
- the precoding or beamforming may be referred to as a precoder or a spatial domain filter or the like.
- the method of forming the transmission beam and the reception beam is not limited to the above method.
- a method of changing the angle of each antenna may be used, or a method of using a precoding vector and a method of changing the angle of the antenna may be used in combination.
- different antenna panels may be switched and used, a method of combining a method of using a plurality of antenna panels in combination may be used, or another method may be used.
- a plurality of different transmission beams may be used in the high frequency band.
- the use of multiple transmission beams is called multi-beam operation, and the use of one transmission beam is called single-beam operation.
- the radio parameter or the like being "configured” may mean that a predetermined value is set in advance (Pre-confile), or the base station 10 or The radio parameter notified from the user device 20 may be set.
- FIG. 1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention.
- the wireless communication system according to the embodiment of the present invention includes a base station 10 and a user device 20 as shown in FIG.
- FIG. 1 shows one base station 10 and one user device 20, this is an example, and there may be a plurality of each.
- the base station 10 is a communication device that provides one or more cells and performs wireless communication with the user device 20.
- the physical resources of the radio signal are defined in the time domain and the frequency domain, the time domain may be defined by the number of OFDM symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks.
- the base station 10 transmits a synchronization signal and system information to the user apparatus 20. Synchronous signals are, for example, NR-PSS and NR-SSS. A part of the system information is transmitted by, for example, NR-PBCH, and is also referred to as broadcast information.
- the synchronization signal and the broadcast information may be periodically transmitted as an SS block (SS / PBCH block) composed of a predetermined number of OFDM symbols.
- the base station 10 transmits a control signal or data to the user device 20 by DL (Downlink), and receives the control signal or data from the user device 20 by UL (Uplink). Both the base station 10 and the user device 20 can perform beamforming to transmit and receive signals.
- the reference signal transmitted from the base station 10 includes CSI-RS (Channel State Information Reference Signal), and the channel transmitted from the base station 10 is PDCCH (Physical Downlink Control Channel). And PDSCH (Physical Downlink Shared Channel) are included.
- CSI-RS Channel State Information Reference Signal
- PDCCH Physical Downlink Control Channel
- PDSCH Physical Downlink Shared Channel
- the user device 20 is a communication device having a wireless communication function such as a smartphone, a mobile phone, a tablet, a wearable terminal, and a communication module for M2M (Machine-to-Machine).
- the user device 20 uses various communication services provided by the wireless communication system by receiving the control signal or data from the base station 10 by DL and transmitting the control signal or data to the base station 10 by UL.
- the channels transmitted from the user apparatus 20 include PUCCH (Physical Uplink Control Channel) and PUSCH (Physical Uplink Shared Channel).
- NR New Radio
- PDSCH Physical Downlink Sharped Channel
- PDCCH Physical Downlink Control Channel
- SSB Synchronization Signal / Physical Broadcast Channel
- CSI-RS Channel State Information Reference Signal
- Beam forming is applied when doing.
- FR2 Frequency Range 2
- FR1 Frequency Range 1
- 8 beams can be used.
- TCI Transmission Configuration Indication
- QCL Quantum-Co-Location
- the fact that the PDSCH, which is a channel for transmitting reference signals and data such as CSI-RS (or SS / PBCH), is QCL means that these reference signals and data are transmitted by the same beam. Means to have.
- QCL Type D When transmitting beam information, QCL Type D is mainly used. QCL Type D means that the same beam is transmitted. Others, such as the QCL Type A, are used for coordination, for example, notifying whether the base station 10 is in the same location.
- the NR defines a beam management function for selecting the optimum pair of beams used by the base station 10 for transmission and beams used by the user apparatus 20 for reception.
- FIG. 3 is a diagram showing an example of NR beam management processing.
- the base station 10 notifies the user apparatus 20 of the setting of the reference signal and the setting of the report.
- the user apparatus 20 measures the quality of the beam (RSRP: Reference Signal Received Power) using the reference signal transmitted by the notified resource, and transmits the measured quality to the base station 10.
- RSRP Reference Signal Received Power
- the base station 10 calculates an optimum beam based on the quality of each beam reported from the user device 20, and uses information indicating that the calculated beam is used to transmit data and / or a control signal as a TCI state in the user device. Notify 20 (step S103).
- the following RS resource configuration function, Beam reporting function, and Beam indication function are known as functions that can be used in the beam management procedure.
- the RS resource configuration function is a function for setting a reference signal used for beam management (beam quality report: beam reporting / L1-RSRP reporting) by RRC signaling.
- beam quality report beam reporting / L1-RSRP reporting
- SSB or CSI-RS can be set as the reference signal used for the beam quality report.
- aperiodic, semi-persistent, and periodic are supported as the transmission cycle of CSI-RS.
- Rx beam RRC signaling
- the Beam reporting function is a function for reporting beam quality by diverting the framework of CSI-RS reporting.
- the user device 20 reports the beam quality to the base station 10. As the reporting period, aperiodic, semi-persistent, and periodic are supported.
- Beam indication function TCI-state (Transmission Indication Instruction) for notifying the user apparatus 20 of information indicating which beam the base station 10 is using for transmitting each reference signal, data, and control signal by the Beam indication function from the network.
- -State Transmission Indication Instruction
- FIG. 4 is a diagram showing an example of a TCI state set in the user device 20.
- RRC Radio Resource Control
- TCI states for PDCCH among the TCI states set by RRC signaling in the user device 20, it is possible to activate up to 8 TCI states by the Medium Access Control Control Element (MAC CE). It is possible to deactivate the TCI state that is present and has been started.
- the user device 20 monitors the active TCI status.
- the TCI states for PDSCH among the TCI states set by RRC signaling in the user device 20, it is possible to activate up to 8 TCI states by the Medium Access Control Control Element (MAC CE). It is possible to deactivate the TCI state that is present and has been started. Further, the base station 10 can specify the TCI status of the PDSCH by the Downlink Control Information (DCI) among the TCI states activated by the MAC CE. In this case, the user device 20 receives the data transmitted by PDSCH, assuming the TCI status specified by DCI.
- DCI Downlink Control Information
- the operation of the user device 20 when switching the TCI state is currently being discussed in RAN4 of 3GPP.
- the 3GPP RAN4 Radio Resource Management defines the permissible time to complete the activation of the deactivated Secondary Cell (SCell).
- the user device 20 can send an accurate Channel State Information (CSI) report to the target SCell x seconds after the user device 20 receives the SCell activation command in slot n. There is.
- CSI Channel State Information
- the following time is included: -Time for the user device 20 to decode the Medium Access Control (MAC) command received in slot n.
- MAC Medium Access Control
- PSS Precision System Synchronization Signal
- SSS Social Security Synchronization Signal
- CSI CSI-Reference Signal
- the user device 20 receives the Physical Downlink Shared Channel (PDSCH) and the Physical Downlink Control Channel (PDCCH) based on the TCI status information notified from the base station 10.
- PDSCH Physical Downlink Shared Channel
- PDCCH Physical Downlink Control Channel
- the base station 10 causes the user apparatus 20 to report the Synchronization Signal Block (SSB) and / or the Layer 1-Reference Signal Received power (L1-RSRP) based on CSI-RS, and which SSB and / or The user apparatus 20 is notified as a Transmission Synchronization Indication (TCI) state whether the CSI-RS is the same radio channel as the PDSCH and the PDCCH (whether it is transmitted by the same beam).
- TCI Transmission Synchronization Indication
- Non-Patent Document 2 It is specified in Non-Patent Document 2 that the L1-RSRP and CSI reporting operations are not performed on the deactivated SCell (measurement of L1-RSRP is a part of CSI reporting). 1> if the SCell is activated: 2> not transmit SRS on the SCell; 2> not report CSI for the SCell; 2> not transmit on UL-SCH on the SCell; 2> not transmit on RACH on the SCell; 2> not monitor the PDCCH on the SCell; 2> not monitor the PDCCH for the SCell; 2> not transmit PUCCH on the SCell.
- the base station 10 may not be able to determine which SSB or CSI-RS is suitable as a QCL resource (beam). Therefore, the user device 20 may not be able to transmit the CSI report in an appropriate direction.
- the user device 20 performs the Layer 3 (L3) measurement, and therefore determines which SSB or CSI-RS is appropriate as the QCL resource based on the result of the L3 measurement. It has been proposed to be used for. However, this proposal has the following problems.
- L3 measurement is set as Event trigger reporting
- the user device 20 does not report L3 measurement unless an event occurs. Therefore, unless an event occurs, the base station 10 cannot obtain the report of L3 measurement.
- the measurement result is calculated by averaging the measurement results using a plurality of samples. Therefore, the received beam of the user device 20 determined to be optimal based on the L3 measurement may be different from the received beam of the user device 20 determined to be optimal by the L1-RSRP measurement.
- Efficient network control and communication between base station 10 and user equipment 20 by clarifying the conditions for the received beam applicable to the user equipment 20 when the SCell is deactivated and reactivated. Can be optimized.
- Method 1 Before the SCell is deactivated, the conditions that can determine the receive beam to be applied when the SCell is activated are clarified based on the information measured by the user device 20, and if the conditions are satisfied, the user device is used. 20 is an activated SCell assuming the same TCI status or QCL as before the SCell was deactivated (ie, assuming that the transmit and receive beams before the SCell was deactivated). The received beam may be applied to the.
- the SCell is reactivated from the timing of the measurement and the report. If the time interval to the timing is within y seconds, the user apparatus 20 may apply the received beam at the time of making the measurement and reporting to the activated SCell. In this case, the user device 20 does not have to perform L1-RSRP reporting and UE Rx beam sweeping. Alternatively, the user apparatus 20 may complete the L1-RSRP reporting and the UE Rx beam sweeping with fewer measurements (and / or reports) than usual.
- L1-RSRP L1-RSRP
- one or more of the following may be applied to the measurement / report performed by the user apparatus 20 before the SCell is deactivated.
- ⁇ L3 measurement -Rx beam measurement (measurement by CSI-RS with "repetition” set).
- -Radio Link Monitoring -Beam Failure Detection, Candidate Beam Detection.
- y-second may be switched depending on which of the above-mentioned measurements is applied. Further, “y seconds” may be equivalent to TA timer.
- the base station 10 will perform the SCell.
- the TCI status at the time of the last report before is deactivated may be set for the user device 20.
- the user device 20 may autonomously assume the QCL (that is, the same transmission beam and reception beam as before the SCell was deactivated). , It may be assumed that it is applicable to communication with the activated SCell).
- the user device 20 may perform the Random Access procedure, and perform CSI reporting on the assumption that the SSBs monitored at that time are PDCCH, PDSCH, and QCL.
- the user device 20 determines the received beam based on the measurement made on the deactivated SCell, and after the SCell is reactivated, the user device 20 uses the reference used for the measurement regardless of the TCI status. It may be assumed that the signal (RS) and the PDSCH and PDCCH are QCLs (that is, the reference signal used for the measurement and the PDSCH signal and the PDCCH signal are transmitted by the same beam). Based on the above assumption, the user device 20 may perform CSI reporting after SCell is activated.
- the last measurement taken by the user device 20 before the SCell was activated regardless of whether it was reported to the base station 10.
- the user apparatus 20 may take over the reference signal and the received beam used at the time of measurement. In this case, the user apparatus 20 may apply the inherited reference signal and the received beam to the CSI reporting after the SCell is activated.
- An example of the measurement performed by the user device on the deactivated SCell is L3 measurement.
- the user device 20 when the user device 20 performs L3 measurement on the deactivated SCell, even if the result of L3 measurement is not reported to the base station 10, the user before the SCell is activated again.
- the user device 20 may take over the reference signal and the received beam used at the last L3 measurement performed by the device 20. In this case, the user apparatus 20 may apply the inherited reference signal and the received beam to the CSI reporting after the SCell is reactivated.
- the user device 20 may determine the received beam based on measurements made on other serving cells rather than measurements made on the deactivated SCell.
- the user apparatus 20 may assume a QCL based on the results measured by the PCell and / or PSCell.
- the measurement performed on the other serving cell may be, for example, any of the following measurements.
- -Rx beam measurement (measurement by CSI-RS with "repetition” set).
- -Radio Link Monitoring. -Beam Failure Detection, Candidate Beam Detection.
- the base station 10 and the user device 20 have all the functions described in the present embodiment. However, the base station 10 and the user device 20 may include only a part of the functions described in the present embodiment.
- the base station 10 and the user device 20 may be collectively referred to as a communication device.
- FIG. 5 is a diagram showing an example of the functional configuration of the base station 10. As shown in FIG. 5, the base station 10 has a transmitting unit 110, a receiving unit 120, and a control unit 130.
- the functional configuration shown in FIG. 5 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the present embodiment can be executed.
- the transmission unit 110 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
- the receiving unit 120 wirelessly receives various signals and acquires a signal of a higher layer from the received signal of the physical layer. Further, the receiving unit 120 includes a measuring unit that measures the received signal and acquires the received power and the like.
- the control unit 130 controls the base station 10.
- the function of the control unit 130 related to transmission may be included in the transmission unit 110, and the function of the control unit 130 related to reception may be included in the reception unit 120.
- the control unit 130 calculates an optimum beam based on the quality of each beam reported from the user device 20, and provides information indicating that the calculated beam transmits data and / or a control signal. Generate as TCI status.
- the transmission unit 110 transmits a signal including the TCI status to the user device 20.
- the transmission unit 110 in addition to one beam for transmitting the PDCCH signal and the PDSCH signal, the transmission unit 110 has a Beam Management Reference signal (BM-RS), a Radio Link Monitoring Reference signal (RLM-RS), and a Radio Link Reference signal (RLM-RS). Etc., and multiple reference signals (beams) are transmitted periodically.
- BM-RS Beam Management Reference signal
- RLM-RS Radio Link Monitoring Reference signal
- RLM-RS Radio Link Reference signal
- FIG. 6 is a diagram showing an example of the functional configuration of the user device 20.
- the user device 20 includes a transmission unit 210, a reception unit 220, and a control unit 230.
- the functional configuration shown in FIG. 6 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the present embodiment can be executed.
- the transmission unit 210 includes a function of generating a signal to be transmitted to the base station 10 side and transmitting the signal wirelessly.
- the receiving unit 220 includes a function of receiving various signals transmitted from the base station 10 and acquiring information of, for example, a higher layer from the received signals. Further, the receiving unit 220 includes a measuring unit that measures the received signal and acquires the received power and the like.
- the control unit 230 controls the user device 20.
- the function of the control unit 230 related to transmission may be included in the transmission unit 210, and the function of the control unit 230 related to reception may be included in the reception unit 220.
- the receiving unit 220 measures the beam quality (RSRP: Reference Signal Received Power) using the reference signal transmitted by the resource notified from the base station 10, and the transmitting unit 210 measures the measured quality. Is transmitted to the base station 10.
- RSRP Reference Signal Received Power
- the control unit 230 may apply the received beam at the time of making the measurement and the report to the activated SCell. In this case, the control unit 230 does not have to perform L1-RSRP reporting and UE Rx beam sweeping. Alternatively, the control unit 230 may complete the L1-RSRP reporting and the UE Rx beam sweeping with fewer measurements (and / or reports) than usual.
- L1-RSRP L1-RSRP
- one or more of the following may be applied to the measurement / report performed by the control unit 230 before the SCell is deactivated.
- ⁇ L3 measurement -Rx beam measurement (measurement by CSI-RS with "repetition” set).
- -Radio Link Monitoring -Beam Failure Detection, Candidate Beam Detection.
- control unit 230 determines the received beam based on the measurement performed on the deactivated SCell, and after the SCell is reactivated, the control unit 230 is used for the measurement regardless of the TCI status. It may be assumed that the reference signal (RS) and the PDSCH and PDCCH are QCLs (that is, the reference signal used for the measurement, the PDSCH signal, and the PDCCH signal are transmitted by the same beam). Based on the above assumption, the control unit 230 may perform CSI reporting after SCell is activated.
- RS reference signal
- the PDSCH and PDCCH are QCLs (that is, the reference signal used for the measurement, the PDSCH signal, and the PDCCH signal are transmitted by the same beam). Based on the above assumption, the control unit 230 may perform CSI reporting after SCell is activated.
- control unit 230 may determine the received beam based on measurements made on other serving cells rather than measurements made on the deactivated SCell. For example, if there is a Primery Cell (PCell), a Primary Secondary Cell (PSCell), or an activated SCell in the same frequency band as the frequency band of the deactivated SCell other than the deactivated SCell, Even if the base station 10 does not notify the TCI status, the control unit 230 may assume a QCL based on the results measured by the PCell and / or PSCell and / or SCell.
- PCell Primery Cell
- PSCell Primary Secondary Cell
- SCell Primary Secondary Cell
- each functional block may be realized by using one device that is physically or logically connected, or directly or indirectly (for example, by using two or more physically or logically separated devices). , Wired, wireless, etc.) and may be realized using these plurality of devices.
- the functional block may be realized by combining the software with the one device or the plurality of devices.
- Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and assumption. Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but limited to these I can't.
- a functional block (constituent unit) for functioning transmission is called a transmitting unit or a transmitter.
- the method of realizing each of them is not particularly limited.
- the base station 10 and the user device 20 in one embodiment of the present invention may both function as computers that perform processing according to the present embodiment.
- FIG. 7 is a diagram showing an example of the hardware configuration of the base station 10 and the user device 20 according to the present embodiment.
- the base station 10 and the user device 20 described above may be physically configured as computer devices 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. Good.
- the word “device” can be read as a circuit, device, unit, etc.
- the hardware configuration of the base station 10 and the user device 20 may be configured to include one or more of the devices shown by 1001 to 1006 shown in the figure, or may be configured not to include some of the devices. You may.
- the processor 1001 For each function of the base station 10 and the user device 20, the processor 1001 performs an operation by loading predetermined software (program) on the hardware such as the processor 1001 and the memory 1002, and controls the communication by the communication device 1004. It is realized by controlling at least one of reading and writing of data in the memory 1002 and the storage 1003.
- predetermined software program
- Processor 1001 operates, for example, an operating system to control the entire computer.
- the processor 1001 may be configured by a central processing unit (CPU: Central Processing Unit) including an interface with a peripheral device, a control device, an arithmetic unit, a register, and the like.
- CPU Central Processing Unit
- the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these.
- a program program code
- the control unit 130 of the base station 10 may be realized by a control program stored in the memory 1002 and operating in the processor 1001, and may be realized in the same manner for other functional blocks.
- the various processes described above are executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001.
- Processor 1001 may be implemented by one or more chips.
- the program may be transmitted from the network via a telecommunication line.
- the memory 1002 is a computer-readable recording medium, and is composed of at least one such as a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EPROM (Electrically Erasable Programmable ROM), and a RAM (Random Access Memory). May be done.
- the memory 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like.
- the memory 1002 can store a program (program code), a software module, or the like that can be executed to implement the wireless communication method according to the embodiment of the present disclosure.
- the storage 1003 is a computer-readable recording medium, and is, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, or a Blu-ray). It may consist of at least one (registered trademark) disk), smart card, flash memory (eg, card, stick, key drive), floppy (registered trademark) disk, magnetic strip, and the like.
- the storage 1003 may be referred to as an auxiliary storage device.
- the storage medium described above may be, for example, a database, server or other suitable medium containing at least one of memory 1002 and storage 1003.
- 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, a network controller, a network card, a communication module, or the like.
- the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, and the like in order to realize at least one of frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex). It may be composed of.
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an input from the outside.
- the output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside.
- the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
- each device such as the processor 1001 and the memory 1002 is connected by the bus 1007 for communicating information.
- the bus 1007 may be configured by using a single bus, or may be configured by using a different bus for each device.
- the base station 10 and the user device 20 are a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), an FPGA (Field Programmable Gate Array), etc., respectively. It may be configured to include hardware, and the hardware may realize a part or all of each functional block. For example, processor 1001 may be implemented using at least one of these hardware.
- DSP Digital Signal Processor
- ASIC Application Specific Integrated Circuit
- PLD Programmable Logic Device
- FPGA Field Programmable Gate Array
- the secondary cell After the receiving unit that receives the reference signal from the secondary cell, the transmitting unit that transmits the measurement result of the reference signal, and the transmitting unit transmit the measurement result, the secondary cell is deactivated and the secondary cell becomes In the case of reactivation, if the time interval from the timing when the transmitting unit transmits the measurement result to the timing when the secondary cell is reactivated is within a predetermined time interval, the transmitting unit transmits the measurement result.
- a user device including a control unit that selects a reception beam applied to the secondary cell at the time of transmission as a reception beam applied to the reactivated secondary cell.
- the user apparatus selects the received beam by using the measurement result of the measurement made in the past to select the received beam without performing the measurement for selecting the received beam again. This allows you to reduce the time it takes to reactivate the deactivated secondary cell.
- the receiving unit makes a measurement on the deactivated secondary cell, and the controlling unit sets a time interval from the timing when the transmitting unit transmits the measurement result to the timing when the secondary cell is reactivated. If the time interval is exceeded, the receive beam applied by the receiver during the measurement of the deactivated secondary cell is reactivated immediately before the secondary cell is reactivated. It may be selected as the receive beam applied to the secondary cell.
- the control unit executes a random access procedure. May be good.
- the receiving unit may measure the deactivated secondary cell, and the controlling unit may select the receiving beam to be applied to the reactivated secondary cell based on the measurement result by the receiving unit. ..
- the secondary cell is deactivated and the secondary cell is reactivated after the step of receiving the reference signal from the secondary cell, the step of transmitting the measurement result of the reference signal, and the step of transmitting the measurement result.
- the reception beam applied to the secondary cell when transmitting the measurement result is within a predetermined time interval.
- the boundary of the functional unit or the processing unit in the functional block diagram does not always correspond to the boundary of the physical component.
- the operation of the plurality of functional units may be physically performed by one component, or the operation of one functional unit may be physically performed by a plurality of components. With respect to the processing procedure described in the embodiment, the order of processing may be changed as long as there is no contradiction.
- the base station 10 and the user device 20 have been described with reference to 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 the embodiment of the present invention and the software operated by the processor of the user apparatus 20 according to the embodiment of the present invention are random access memory (RAM), flash memory, and read-only, respectively. It may be stored in a memory (ROM), EPROM, EEPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.
- information notification includes physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, etc. It may be carried out by notification information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof.
- the RRC signaling may be called an RRC message, and may be, for example, an RRC connection setup (RRC Connection Setup) message, an RRC connection reconfiguration (RRC Connection Reconfiguration) message, or the like.
- Each aspect / embodiment described in the present disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), and 5G (5th generation mobile communication).
- system FRA (Future Radio Access), NR (new Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)) )), IEEE 802.16 (WiMAX®), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth®, and other systems that utilize suitable systems and have been extended based on these. It may be applied to at least one of the next generation systems. Further, a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).
- the specific operation performed by the user device 20 in the present disclosure may be performed by its upper node (upper node).
- upper node In a network consisting of one or more network nodes having a user device 20, various operations performed for communication with a terminal are performed by the user device 20 and other network nodes other than the user device 20 (for example,). , MME, S-GW, and the like, but not limited to these).
- MME Mobility Management Entity
- S-GW Serving Mobility Management Entity
- the input / output information and the like may be saved in a specific location (for example, memory), or may be managed using a management table. Input / output information and the like can be overwritten, updated, or added. The output information and the like may be deleted. The input information or the like may be transmitted to another device.
- the determination may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparing numerical values (for example, a predetermined value). It may be done by comparison with the value).
- the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit notification, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.
- Software is an instruction, instruction set, code, code segment, program code, program, subprogram, software module, whether called software, firmware, middleware, microcode, hardware description language, or another name.
- Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc. should be broadly interpreted to mean.
- software, instructions, information, etc. may be transmitted and received via a transmission medium.
- a transmission medium For example, a website that uses at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL: Digital Subscriber Line), etc.) and wireless technology (infrared, microwave, etc.) When transmitted from a server, or other remote source, at least one of these wired and wireless technologies is included within the definition of transmission medium.
- data, instructions, commands, information, signals, bits, symbols, chips, etc. may be voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.
- a channel and a symbol may be a signal (signaling).
- the signal may be a message.
- the component carrier CC: Component Carrier
- CC Component Carrier
- system and “network” used in this disclosure are used interchangeably.
- information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values from predetermined values, or using other corresponding information. It may be represented.
- the radio resource may be one indicated by an index.
- base station Base Station
- wireless base station fixed station
- NodeB NodeB
- eNodeB eNodeB
- gNodeB gNodeB
- Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.
- the base station can accommodate one or more (for example, three) cells.
- a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (RRH:)).
- Communication services can also be provided by Remote Radio Head).
- the term "cell” or “sector” refers to part or all of the coverage area of at least one of the base stations and base station subsystems that provide communication services in this coverage. Point to.
- MS Mobile Station
- UE User Equipment
- Mobile stations can be subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless, depending on the trader. It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
- At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, or the like.
- At least one of the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like.
- the moving body may be a vehicle (eg, car, airplane, etc.), an unmanned moving body (eg, drone, self-driving car, etc.), or a robot (manned or unmanned). ) May be.
- at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation.
- at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.
- IoT Internet of Things
- the base station in the present disclosure may be read by the user terminal.
- communication between a base station and a user terminal has been replaced with communication between a plurality of user terminals (for example, it may be called D2D (Dvice-to-Device), V2X (Vehicle-to-Everything), etc.).
- D2D Device-to-Device
- V2X Vehicle-to-Everything
- Each aspect / embodiment of the present disclosure may be applied to the configuration.
- the user terminal 20 may have the functions of the user device 20 described above.
- words such as "up” and “down” may be read as words corresponding to communication between terminals (for example, "side”).
- the uplink, downlink, and the like may be read as side channels.
- the user terminal in the present disclosure may be read as a base station.
- the user device 20 may have the functions of the user terminal 20 described above.
- connection means any direct or indirect connection or connection between two or more elements, and each other. It can include the presence of one or more intermediate elements between two “connected” or “combined” elements.
- the connection or connection between the elements may be physical, logical, or a combination thereof.
- connection may be read as "access”.
- the two elements use at least one of one or more wires, cables and printed electrical connections, and, as some non-limiting and non-comprehensive examples, the radio frequency domain. Can be considered to be “connected” or “coupled” to each other using electromagnetic energies having wavelengths in the microwave and light (both visible and invisible) regions.
- the reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot depending on the applicable standard.
- RS Reference Signal
- the term "A and B are different” may mean “A and B are different from each other”.
- the term may mean that "A and B are different from C”.
- Terms such as “separate” and “combined” may be interpreted in the same way as “different”.
- Base station 110 Transmitter 120 Receiver 130 Control 20
- User device 210 Transmitter 220 Receiver 230
- Control 1001 Processor 1002 Memory
- Storage 1004
- Communication device 1005
- Input device 1006 Output device
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Abstract
Description
NRにおいて、基地局10が送信のために使用するビーム及びユーザ装置20が受信のために使用するビームの最適ペアを選択するための、ビームマネジメント(Beam management)機能が規定されている。
RS resource configuration機能は、ビームマネジメント(ビーム品質報告:beam reporting/L1-RSRP reporting)に用いる参照信号をRRCシグナリングで設定する機能である。ここで、ビーム品質報告に用いる参照信号として、SSB又はCSI-RSを設定することが可能である。また、CSI-RSの送信周期として、aperiodic、semi-persistent、及びperiodicがサポートされている。さらに、ユーザ装置20における受信ビーム(Rx beam)を最適化するための機能として、基地局10がCSI-RSを同じビームで繰り返し送信するrepetitionをRRCシグナリングで設定することが可能である(CSI-RS with repetition on or off)。
Beam reporting機能は、CSI-RS reportのフレームワークを流用した、ビーム品質を報告する機能である。ユーザ装置20がビーム品質を基地局10に報告する。報告周期(reporting period)として、aperiodic、semi-persistent、及びperiodicがサポートされている。
Beam indication機能により、各参照信号、データ、制御信号の送信のために、基地局10がどのビームを用いているかを示す情報をネットワークからユーザ装置20に通知するためのTCI-state(Transmission Configuration Indication-state)を設定することが可能である。
図4は、ユーザ装置20において設定されるTCI stateの例を示す図である。
・スロットnで受信したMedium Access Control(MAC)コマンドをユーザ装置20が復号化する時間。
・ターゲットSCellのPrimary Synchronization Signal(PSS)/Secondary Synchronization Signal(SSS)検出と、時間及び周波数同期に要する時間。
・Channel State Inforamtion(CSI)-Reference Signal(RS)受信タイミング、レポート送信可能タイミング等により発生するCSIレポートに関する遅延時間。
ディアクティベートされたSCellでは、L1-RSRP及びCSI reporting動作は実施されないことが非特許文献2において規定されている(L1‐RSRPの測定は、CSI reportingの一部である)。
1> if the SCell is deactivated:
2> not transmit SRS on the SCell;
2> not report CSI for the SCell;
2> not transmit on UL-SCH on the SCell;
2> not transmit on RACH on the SCell;
2> not monitor the PDCCH on the SCell;
2> not monitor the PDCCH for the SCell;
2> not transmit PUCCH on the SCell.
SCellがディアクティベートされる前に、ユーザ装置20が測定した情報を基に、SCellがアクティベートされた際に適用する受信ビームを決定できる条件を明確化し、その条件が満たされる場合には、ユーザ装置20は、SCellがディアクティベートされる前と同じTCI state又はQCLを想定して(すなわち、SCellがディアクティベートされる前の送信ビーム及び受信ビームが有効であることを想定して)アクティベートされたSCellに対して受信ビームを適用してもよい。
・L3 measurement。
・Rx beam measurement(「repetition」が設定されたCSI-RSでの測定)。
・Radio Link Monitoring。
・Beam Failure Detection、Candidate Beam Detection。
ユーザ装置20は、ディアクティベートされたSCellに対して行った測定に基づいて、受信ビームを決定し、SCellが再度アクティベートされた後、ユーザ装置20は、TCI stateにかかわらず、測定に使用したリファレンス信号(RS)とPDSCH及びPDCCHがQCLであると想定(すなわち、測定に使用したリファレンス信号とPDSCHの信号及びPDCCHの信号が同一のビームで送信されると想定)してもよい。ユーザ装置20は上記想定をもとに、SCellがアクティベートされた後にCSI reportingを行ってもよい。
・L3 measurement。
・L1-RSRP reporting。
・Rx beam measurement(「repetition」が設定されたCSI-RSでの測定)。
・Radio Link Monitoring。
・Beam Failure Detection、Candidate Beam Detection。
次に、これまでに説明した処理動作を実行する基地局10及びユーザ装置20の機能構成例を説明する。基地局10及びユーザ装置20は、本実施の形態で説明した全ての機能を備えている。ただし、基地局10及びユーザ装置20は、本実施の形態で説明した全ての機能のうちの一部のみの機能を備えてもよい。なお、基地局10及びユーザ装置20を総称して通信装置と称してもよい。
図5は、基地局10の機能構成の一例を示す図である。図5に示すように、基地局10は、送信部110と、受信部120と、制御部130と、を有する。図5に示す機能構成は一例に過ぎない。本実施の形態に係る動作を実行できるのであれば、機能区分及び機能部の名称はどのようなものでもよい。
図6は、ユーザ装置20の機能構成の一例を示す図である。図6に示されるように、ユーザ装置20は、送信部210と、受信部220と、制御部230と、を有する。図6に示す機能構成は一例に過ぎない。本実施の形態に係る動作を実行できるのであれば、機能区分及び機能部の名称はどのようなものでもよい。
・L3 measurement。
・Rx beam measurement(「repetition」が設定されたCSI-RSでの測定)。
・Radio Link Monitoring。
・Beam Failure Detection、Candidate Beam Detection。
上記実施の形態の説明に用いたブロック図(図5~図6)は、機能単位のブロックを示している。これらの機能ブロック(構成部)は、ハードウェア及びソフトウェアの少なくとも一方の任意の組み合わせによって実現される。また、各機能ブロックの実現方法は特に限定されない。すなわち、各機能ブロックは、物理的又は論理的に結合した1つの装置を用いて実現されてもよいし、物理的又は論理的に分離した2つ以上の装置を直接的又は間接的に(例えば、有線、無線などを用いて)接続し、これら複数の装置を用いて実現されてもよい。機能ブロックは、上記1つの装置又は上記複数の装置にソフトウェアを組み合わせて実現されてもよい。機能には、判断、決定、判定、計算、算出、処理、導出、調査、探索、確認、受信、送信、出力、アクセス、解決、選択、選定、確立、比較、想定、期待、見做し、報知(broadcasting)、通知(notifying)、通信(communicating)、転送(forwarding)、構成(configuring)、再構成(reconfiguring)、割り当て(allocating、mapping)、割り振り(assigning)などがあるが、これらに限られない。たとえば、送信を機能させる機能ブロック(構成部)は、送信部(transmitting unit)や送信機(transmitter)と呼称される。いずれも、上述したとおり、実現方法は特に限定されない。
本明細書には、少なくとも下記のユーザ装置及び通信方法が開示されている。
以上、本発明の実施の形態を説明してきたが、開示される発明はそのような実施形態に限定されず、当業者は様々な変形例、修正例、代替例、置換例等を理解するであろう。発明の理解を促すため具体的な数値例を用いて説明がなされたが、特に断りのない限り、それらの数値は単なる一例に過ぎず適切な如何なる値が使用されてもよい。上記の説明における項目の区分けは本発明に本質的ではなく、2以上の項目に記載された事項が必要に応じて組み合わせて使用されてよいし、ある項目に記載された事項が、別の項目に記載された事項に(矛盾しない限り)適用されてよい。機能ブロック図における機能部又は処理部の境界は必ずしも物理的な部品の境界に対応するとは限らない。複数の機能部の動作が物理的には1つの部品で行われてもよいし、あるいは1つの機能部の動作が物理的には複数の部品により行われてもよい。実施の形態で述べた処理手順については、矛盾の無い限り処理の順序を入れ替えてもよい。処理説明の便宜上、基地局10とユーザ装置20は機能的なブロック図を用いて説明されたが、そのような装置はハードウェアで、ソフトウェアで又はそれらの組み合わせで実現されてもよい。本発明の実施の形態に従って基地局10が有するプロセッサにより動作するソフトウェア及び本発明の実施の形態に従ってユーザ装置20が有するプロセッサにより動作するソフトウェアはそれぞれ、ランダムアクセスメモリ(RAM)、フラッシュメモリ、読み取り専用メモリ(ROM)、EPROM、EEPROM、レジスタ、ハードディスク(HDD)、リムーバブルディスク、CD-ROM、データベース、サーバその他の適切な如何なる記憶媒体に保存されてもよい。
110 送信部
120 受信部
130 制御部
20 ユーザ装置
210 送信部
220 受信部
230 制御部
1001 プロセッサ
1002 メモリ
1003 ストレージ
1004 通信装置
1005 入力装置
1006 出力装置
Claims (5)
- セカンダリセルからの参照信号を受信する受信部と、
前記参照信号の測定結果を送信する送信部と、
前記送信部が前記測定結果を送信した後、前記セカンダリセルがディアクティベートされ、前記セカンダリセルが再度アクティベートされる場合において、前記送信部が前記測定結果を送信したタイミングから前記セカンダリセルが再度アクティベートされるタイミングまでの時間間隔が所定の時間間隔以内である場合、前記送信部が前記測定結果を送信する際に前記セカンダリセルに適用していた受信ビームを前記再度アクティベートされたセカンダリセルに適用する受信ビームとして選択する制御部と、
を備えるユーザ装置。 - 前記受信部は、前記ディアクティベートされたセカンダリセルに対する測定を行い、前記制御部は、前記送信部が前記測定結果を送信したタイミングから前記セカンダリセルが再度アクティベートされるタイミングまでの時間間隔が前記所定の時間間隔を超過している場合、前記セカンダリセルが再度アクティベートされる直前に、前記受信部が前記ディアクティベートされたセカンダリセルの測定の際に適用していた受信ビームを、前記再度アクティベートされたセカンダリセルに適用する受信ビームとして選択する、
請求項1に記載のユーザ装置。 - 前記制御部は、前記送信部が前記測定結果を送信したタイミングから前記セカンダリセルが再度アクティベートされるタイミングまでの時間間隔が前記所定の時間間隔を超過している場合、ランダムアクセス手順を実行する、
請求項2に記載のユーザ装置。 - 前記受信部は、前記ディアクティベートされたセカンダリセルの測定を行い、前記制御部は、前記受信部による測定結果に基づき、前記再度アクティベートされたセカンダリセルに適用する前記受信ビームを選択する、
請求項1に記載のユーザ装置。 - セカンダリセルからの参照信号を受信するステップと、
前記参照信号の測定結果を送信するステップと、
前記測定結果を送信した後、前記セカンダリセルがディアクティベートされ、前記セカンダリセルが再度アクティベートされる場合において、前記測定結果を送信したタイミングから前記セカンダリセルが再度アクティベートされるタイミングまでの時間間隔が所定の時間間隔以内である場合、前記測定結果を送信する際に前記セカンダリセルに適用していた受信ビームを前記再度アクティベートされたセカンダリセルに適用する受信ビームとして選択するステップと、
を備える、ユーザ装置による通信方法。
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US20210344469A1 (en) * | 2020-05-04 | 2021-11-04 | Qualcomm Incorporated | Estimating features of a radio frequency band based on an inter-band reference signal |
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JP5687296B2 (ja) * | 2012-09-28 | 2015-03-18 | 株式会社Nttドコモ | 移動局及び無線基地局 |
US10721720B2 (en) * | 2014-01-30 | 2020-07-21 | Qualcomm Incorporated | Cell On-Off procedure for dual connectivity |
WO2016117928A1 (ko) * | 2015-01-20 | 2016-07-28 | 엘지전자(주) | 무선 통신 시스템에서 셀 활성화/비활성화 방법 및 이를 위한 장치 |
PL3696988T3 (pl) * | 2016-11-04 | 2023-01-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Sposoby i systemy zarządzania procesem śledzenia wiązki przy użyciu wskaźników i odpowiadających systemów |
WO2019097478A1 (en) * | 2017-11-16 | 2019-05-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Configuring spatial qcl reference in a tci state |
US10944455B2 (en) * | 2018-02-26 | 2021-03-09 | Qualcomm Incorporated | Beam tracking for periodic user equipment movement |
CA3050207A1 (en) * | 2018-07-19 | 2020-01-19 | Comcast Cable Communications, Llc | Resource management for wireless communications using a power saving state |
CN116963169A (zh) * | 2018-12-04 | 2023-10-27 | 华为技术有限公司 | 一种通信方法及设备 |
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US20210344469A1 (en) * | 2020-05-04 | 2021-11-04 | Qualcomm Incorporated | Estimating features of a radio frequency band based on an inter-band reference signal |
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MX2021011232A (es) | 2021-10-22 |
JPWO2020202397A1 (ja) | 2020-10-08 |
CN113661778A (zh) | 2021-11-16 |
BR112021016977A2 (pt) | 2021-11-30 |
AU2019438908A1 (en) | 2021-09-30 |
EP3952608A1 (en) | 2022-02-09 |
US20220174507A1 (en) | 2022-06-02 |
EP3952608A4 (en) | 2022-11-09 |
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