WO2020166018A1 - ユーザ装置 - Google Patents
ユーザ装置 Download PDFInfo
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- WO2020166018A1 WO2020166018A1 PCT/JP2019/005410 JP2019005410W WO2020166018A1 WO 2020166018 A1 WO2020166018 A1 WO 2020166018A1 JP 2019005410 W JP2019005410 W JP 2019005410W WO 2020166018 A1 WO2020166018 A1 WO 2020166018A1
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- Prior art keywords
- reception quality
- sub
- component carriers
- scc
- rsrp
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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
- H04L5/0058—Allocation criteria
- H04L5/0066—Requirements on out-of-channel emissions
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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
- H04L5/0094—Indication of how sub-channels of the path are allocated
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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
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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
Definitions
- the present invention relates to wireless communication, specifically, a user apparatus that executes carrier aggregation using a plurality of component carriers.
- LTE Long Term Evolution
- LTE-Advanced LTE-Advanced
- 5G New Radio (NR) or Next Generation (NG) 5G New Radio
- Non-Patent Document 1 the number of cells and the number of SS/PBCH Blocks (SSB) (the number of SSB) that the user equipment (User Equipment, UE) can simultaneously monitor the reception quality for each frequency range (FR). ) And the like are defined (Non-Patent Document 1).
- the UE monitors at least 24 SSBs in one serving cell carrier with different SSB index and/or physical cell ID (PCI). It has been specified that it must be done (TS38.133 9.2.3.2).
- Intra-Frequency is specified on the assumption that the transmission (radio base station) side is installed (co-locate) in the same place.
- the network side may not be able to acquire a valid RSRP that can judge the reception quality of the CA as a whole.
- the present invention has been made in view of such a situation, and in carrier aggregation using an Intra-Frequency band of a predetermined frequency range (FR), to provide a user apparatus that can always measure an appropriate reception quality. To aim.
- FR predetermined frequency range
- One aspect of the present invention is a user equipment (UE200), wherein the user equipment uses a plurality of component carriers (CC30) allocated in a predetermined band (Intra-Frequency) of a predetermined frequency range (FR2).
- CC30 component carriers allocated in a predetermined band (Intra-Frequency) of a predetermined frequency range (FR2).
- SCC sub-component carriers
- FR2 predetermined frequency range
- transmission unit 210 for transmitting the measurement result of the reception quality.
- One aspect of the present invention is a user apparatus (UE200), the user apparatus performs carrier aggregation using a plurality of component carriers allocated in a predetermined band of a predetermined frequency range, within the predetermined band
- a receiving unit (reception unit 220) that receives setting information that specifies a sub-component carrier that is a target of reception quality measurement among the plurality of sub-component carriers
- a transmission unit (transmission unit 210) that transmits the measurement result of the reception quality measured based on the setting information.
- FIG. 1 is an overall schematic configuration diagram of a wireless communication system 10.
- FIG. 2 is a functional block configuration diagram of the UE 200.
- FIG. 3 is a diagram showing an example of allocation of component carriers (CC) to predetermined bands.
- FIG. 4 is a diagram showing a configuration example of the SSB transmitted from the gNB 100 (or another gNB).
- FIG. 5 is a diagram showing an example of component carrier (CC) allocation in a CA using FR1 and FR2.
- FIG. 6 is a diagram showing an SCC selection operation flow by the UE 200.
- FIG. 7 is a diagram showing an example of a message transmission/reception sequence in the radio resource control layer (RRC layer).
- FIG. 8 is a figure which shows an example of the hardware constitutions of UE200.
- 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 according to 5G New Radio (NR), and includes a Next Generation-Radio Access Network 20 (hereinafter, NG-RAN 20 and a user apparatus 200 (hereinafter, UE 200)).
- NR 5G New Radio
- NG-RAN 20 Next Generation-Radio Access Network
- UE 200 user apparatus 200
- NG-RAN20 includes a wireless base station 100 (hereinafter, gNB100).
- gNB100 wireless base station 100
- the specific configuration of the wireless communication system 10 including the numbers of gNBs and UEs is not limited to the example shown in FIG.
- 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).
- the NG-RAN 20 and 5GC may be simply expressed as Network.
- the gNB100 is a 5G-compliant wireless base station, and executes 5G-compliant wireless communication with the UE200.
- gNB100 and UE200 by controlling radio signals transmitted from multiple antenna elements, Massive MIMO that generates a beam with higher directivity, carrier aggregation (CA) using multiple component carriers (CC), and multiple It is possible to support dual connectivity (DC) that simultaneously transmits component carriers between the NG-RAN node and the UE.
- Massive MIMO that generates a beam with higher directivity
- CA carrier aggregation
- CC component carriers
- DC dual connectivity
- FR1 and FR2 are set.
- FR1 and FR2 are as follows.
- ⁇ FR1 Frequency Range 1
- ⁇ FR2 Frequency Range 2
- the channel bandwidth per CC is up to 100 MHz in FR1 (when subcarrier spacing of 30 or 60 kHz is applied) and up to 400 MHz in FR2 (when subcarrier spacing of 120 kHz is applied).
- UE200 executes CA using a plurality of CCs 30 (not shown in FIG. 1, see FIG. 3) allocated in a band (predetermined band) of FR1 or FR2 (predetermined frequency range).
- FIG. 2 is a functional block configuration diagram of the UE 200. As shown in FIG. 2, the UE 200 includes a transmitter 210, a receiver 220, and a controller 230.
- the transmitter 210 transmits an uplink signal (UL signal) according to NR.
- the receiving unit 220 also receives a downlink signal (DL signal) according to NR.
- the control unit 230 executes control regarding the UL signal transmitted by the transmission unit 210 and the DL signal received by the reception unit 220.
- the transmission unit 210 transmits a UL signal composed of a plurality of CCs to the gNB 100, and the reception unit 220 receives a DL signal composed of a plurality of CCs from the gNB 100. That is, the UE 200 uses a plurality of CCs at the same time to execute carrier aggregation (CA) that realizes wideband communication.
- CA carrier aggregation
- FIG. 3 shows an example of allocation of component carriers (CC) to predetermined bands.
- CC component carriers
- a plurality of bands specifically Band A and Band B, are set.
- two CCs 30 are continuously arranged in the same band (Band A) on the frequency axis.
- a CA using the CC 30 having such an arrangement is called an Intra-band contiguous CA.
- the control unit 230 controls the receiving unit 220 and monitors SS (Synchronization Signal)/PBCH (Physical Broadcast Channel) Block (SSB) transmitted from the gNB 100 and other gNBs (cells).
- SS Synchronization Signal
- PBCH Physical Broadcast Channel Block
- FIG. 4 shows a configuration example of SSB transmitted from gNB100 (or another gNB).
- the SSB 40 is transmitted in a predetermined transmission cycle (5, 10, 20, 40, 80 or 160 ms) from the cell (Cell A) formed by the gNB 100 (or another gNB). That is, SSB is transmitted in a predetermined transmission cycle for each cell or CC.
- the control unit 230 monitors a predetermined number of SSB 40 transmitted at such a predetermined cycle and measures the reception quality of the CC 30.
- Table 1 shows the number of cells that the UE 200 can measure (monitor) at the same time, and the number of SSBs (the number of beams) with different cell IDs (PCI).
- FR2 Intra-Frequency specifies two SSB patterns. This is due to the following reasons.
- beamforming is a technology that forms a directional pattern on the antenna by controlling the amplitude and phase of multiple antennas and increases/decreases the antenna gain in a specific direction.
- SSB monitoring in UE200 when using FR2 Intra-Frequency is stipulated on the assumption that the transmission (gNB) side is installed (co-locate) in the same place.
- RSRP Reference Signal Received Power
- Fig. 5 shows an example of component carrier (CC) allocation in a CA that uses FR1 and FR2.
- PCC, PSCC and SCC are assigned to FR1 and FR2.
- the PCC may also be assigned to FR2 and CA may be executed using only FR2.
- the operation of the UE 200 according to the allocation example shown in FIG. 5 will be further described later.
- the control unit 230 is a predetermined band, specifically, when only a plurality of SCCs are allocated in the Intra-Frequency band of FR2, among the plurality of SCCs, the SCC whose reception quality is to be measured is selected. select. Specifically, the control unit 230 selects the SCC that is the RSRP measurement target.
- the control unit 230 monitors the SSB transmitted using the selected SCC and measures the RSRP.
- the transmitting unit 210 transmits the measured RSRP measurement result. Specifically, the transmitter 210 transmits the measured value of RSRP (or the rank of the measured value) to the gNB 100.
- control unit 230 may select any of the SCCs that are measurement targets.
- the control unit 230 can arbitrarily select one of the SCCs. That is, the criterion for selecting which SCC the UE 200 selects may not be specified in particular and may be left to the implementation.
- the receiving unit 220 can receive the reception quality, specifically, the setting information that specifies the SCC that is the RSRP measurement target.
- the setting information specifies the SCC of the reception quality measurement target among the plurality of SCCs when only the plurality of SCCs are allocated in the FR2 Intra-Frequency band (predetermined band).
- the setting information for example, MeasConfig which is an information element defined in 3GPP TS38.331 can be used.
- the control unit 230 monitors the SSB corresponding to the SCC selected based on the setting information and measures the RSRP. Further, the transmission unit 210 transmits the RSRP measurement result measured based on the setting information to the gNB 100.
- FIG. 5 shows an example of component carrier (CC) allocation in CA using Intra-Frequency of FR1 and FR2. Specifically, FIG. 5 shows three allocation examples.
- CC component carrier
- PCC is allocated to FR1
- PSCC PSCC
- multiple SCCs are allocated to FR2.
- PCC is assigned to FR1 and multiple SCCs are assigned to FR2. That is, PSCC is not assigned to FR2.
- SCC SCCw/ RSRP in the figure
- the allocation example 2 also includes SCCs (SCCw/oRSRPs in the figure) that are not RSRP measurement targets.
- PCCs are allocated to FR1 and multiple SCCs are allocated to FR2.
- a plurality (two) of SCCs (SCCW/ RSRPs in the figure) that are RSRP measurement targets are included.
- SCC sub-component carrier
- FIG. 6 shows an operation flow of SCC selection by the UE 200. As shown in FIG. 6, UE200 determines whether PCC is allocated to FR2 (S10).
- the UE200 monitors the SS/PBCH Block (SSB) corresponding to the PCC, that is, the PCC (S20).
- SSB SS/PBCH Block
- the UE200 monitors 24 SSBs according to the FR2 Intra-Frequency band specification (see Table 1) (the same applies below).
- Table 1 the same applies below.
- the transmitting (gNB) side is installed (co-locate) in the same place, so 24 CCs are selected in the selected CC. It is enough to monitor SSB and measure RSRP.
- UE200 determines whether PSCC is assigned to FR2 (S30).
- the UE200 monitors 24 SSBs in the PSCC (S40).
- Such an allocation state corresponds to allocation example 1 in FIG.
- the UE200 determines whether the SCC that is the RSRP measurement target is assigned to FR2 (S50).
- the UE 200 determines whether there are multiple SCCs that are the measurement target of RSRP, that is, SCC (S60).
- the UE 200 monitors the 24 SSBs corresponding to the SCC, that is, the SCC (S70).
- SCC S70
- Such an allocation state corresponds to allocation example 2 in FIG.
- the UE 200 selects any SCC from the multiple SCCs (S80).
- Such an allocation state corresponds to allocation example 3 in FIG.
- UE200 also monitors 24 SSBs in the selected SCC (S90).
- UE200 monitors the selected SSB and measures RSRP (S100).
- FIG. 7 shows an example of a message transmission/reception sequence in the radio resource control layer (RRC layer).
- RRC layer radio resource control layer
- the network (specifically, NG-RAN20) transmits RRC Reconfiguration to UE200 (S110).
- RRRC Reconfiguration includes MeasConfig, which is an information element that indicates the settings related to measurement in UE200.
- MeasConfig includes setting information that specifies the SCC that is the RSRP measurement target.
- UE200 that received RRC Reconfiguration may select the SCC that is the measurement target of RSRP based on the configuration information. In this case, the SCC selection operation flow shown in FIG. 6 is not applied.
- UE200 executes the process based on the contents of RRC Reconfiguration and returns RRC Reconfiguration Complete to the network (S120).
- the following operation/effect can be obtained. Specifically, when only a plurality of SCCs are assigned in the FR2 Intra-Frequency band, the UE 200 selects the SCC that is the RSRP measurement target among the plurality of SCCs.
- the SCC that is the measurement target of RSRP is extremely suitable as a CC for judging the reception quality of the CA as a whole. That is, the UE 200 can always select an appropriate component carrier to be monitored in the Intra-Frequency band of FR2 (predetermined frequency range).
- UE200 can always measure an appropriate reception quality in carrier aggregation using FR2 Intra-Frequency. By this means, it is possible to avoid the UE 200 from reporting a measurement result of the reception quality that is not intended by the network side, and it is possible to achieve more appropriate operation as the entire wireless communication system 10.
- the UE 200 selects the SCC that is the RSRP measurement target. For this reason, the network side can surely acquire information sufficient for determining the reception quality of the CA as a whole using FR2 Intra-Frequency.
- the UE 200 selects one of the SCCs for which the reception quality (RSRP) is to be measured when there are a plurality of SCCs for which the reception quality (RSRP) is to be measured. Therefore, the reception quality can be reliably measured even when there are a plurality of SCCs.
- the UE 200 can receive the setting information that specifies the SCC for which the reception quality (RSRP) is to be measured. Therefore, it is possible to specify the SCC whose reception quality is to be measured on the initiative of the network. This enables flexible selection of the measurement target SCC in consideration of the state of the wireless communication system 10.
- RSRP reception quality
- RSRP was measured as the reception quality, but the reception quality other than RSRP, for example, RSRQ, Signal-to-Interference plus plus Noise Power Ratio (SINR) may be included. ..
- each functional block may be implemented by using one device that is physically or logically coupled, or directly or indirectly (for example, two or more devices that are physically or logically separated). , Wired, wireless, etc.) and may be implemented using these multiple devices.
- the functional block may be realized by combining the one device or the plurality of devices with software.
- Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, observation, Broadcasting, notifying, communicating, forwarding, configuration, reconfiguring, allocating, mapping, assigning, etc., but not limited to these.
- a functional block (component) that causes transmission to function is called a transmitter (transmitting unit) or a transmitter (transmitter).
- the implementation method is not particularly limited as described above.
- FIG. 8 is a figure which shows an example of the hardware constitutions of UE200.
- the UE 200 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.
- the word “device” can be read as a circuit, device, unit, or the like.
- the hardware configuration of the device may be configured to include one or a plurality of each device illustrated in the figure, or may be configured not to include some devices.
- Each functional block of the UE 200 (see FIG. 2) is realized by any hardware element of the computer device or a combination of the hardware elements.
- each function in the UE 200 by causing a predetermined software (program) to be loaded on hardware such as the processor 1001 and the memory 1002, the processor 1001 performs an operation and controls communication by the communication device 1004, and the memory 1002. Also, it is realized by controlling at least one of reading and writing of data in the storage 1003.
- a predetermined software program
- the processor 1001 for example, runs an operating system to control the entire computer.
- the processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, a calculation device, a register, and the like.
- CPU central processing unit
- the processor 1001 reads a program (program code), 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 various processes described above may be executed by one processor 1001 or may be executed simultaneously or sequentially by two or more processors 1001.
- the processor 1001 may be implemented by one or more chips.
- the program may be transmitted from the network via an electric communication line.
- the memory 1002 is a computer-readable recording medium, and is configured by at least one of, for example, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), and Random Access Memory (RAM). May be done.
- the memory 1002 may be called a register, a cache, a main memory (main storage device), or the like.
- the memory 1002 may store a program (program code) capable of executing the method according to an embodiment of the present disclosure, a software module, and the like.
- the storage 1003 is a computer-readable recording medium, for example, an optical disc such as a Compact Disc ROM (CD-ROM), a hard disc drive, a flexible disc, a magneto-optical disc (for example, a compact disc, a digital versatile disc, a Blu-ray disc). At least one of a (registered trademark) disk, a smart card, a flash memory (for example, a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, or the like may be used.
- the storage 1003 may be called an auxiliary storage device.
- the above-described recording medium may be, for example, a database including at least one of the memory 1002 and the storage 1003, a server, or another appropriate medium.
- the communication device 1004 is hardware (transmission/reception device) for performing communication between computers via at least one of a wired network and a wireless network, and is also called, for example, a network device, a network controller, a network card, a communication module, or the like.
- the communication device 1004 includes a high frequency switch, a duplexer, a filter, a frequency synthesizer, and the like in order to realize at least one of, for example, frequency division duplex (FDD) and time division duplex (TDD). May be composed of
- FDD frequency division duplex
- TDD time division duplex
- the input device 1005 is an input device (eg, keyboard, mouse, microphone, switch, button, 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 performs output to the outside.
- the input device 1005 and the output device 1006 may be integrated (for example, a touch panel).
- 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 by using a single bus, or may be configured by using a different bus for each device.
- the device is configured to include hardware such as a microprocessor, digital signal processor (DSP), Application Specific Integrated Circuit (ASIC), Programmable Logic Device (PLD), Field Programmable Gate Array (FPGA).
- DSP digital signal processor
- ASIC Application Specific Integrated Circuit
- PLD Programmable Logic Device
- FPGA Field Programmable Gate Array
- processor 1001 may be implemented with at least one of these hardware.
- the notification of information is not limited to the mode/embodiment described in the present disclosure, and may be performed using another method.
- information is notified by physical layer signaling (for example, Downlink Control Information (DCI), Uplink Control Information (UCI), upper layer signaling (for example, 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 be referred to as RRC message, for example, RRC Connection Setup (RRC Connection Setup). ) Message, RRC connection reconfiguration message, or the like.
- LTE Long Term Evolution
- LTE-A LTE-Advanced
- SUPER 3G IMT-Advanced
- 4th generation mobile communication system 4th generation mobile communication system
- 5G 5 th generation mobile communication system
- Future Radio Access FAA
- New Radio NR
- W-CDMA registered trademark
- GSM registered trademark
- UMB Ultra Mobile Broadband
- IEEE 802.11 Wi-Fi (registered trademark)
- IEEE 802.16 WiMAX (registered trademark)
- IEEE 802.20 Ultra-WideBand (UWB), Bluetooth (registered trademark), and other suitable systems
- at least a next-generation system based on these systems It may be applied to one. Further, a plurality of systems may be combined and applied (for example, a combination of at least one of LTE and LTE-A and 5G).
- the specific operation that is performed by the base station in the present disclosure may be performed by its upper node in some cases.
- various operations performed for communication with a terminal include a base station and other network nodes other than the base station (eg, MME or S-GW and the like are conceivable, but not limited to these).
- MME or S-GW and the like are conceivable, but not limited to these.
- a combination of a plurality of other network nodes for example, MME and S-GW may be used.
- Information and signals can be output from the upper layer (or lower layer) to the lower layer (or upper layer). Input/output may be performed via a plurality of network nodes.
- the input/output information may be stored in a specific location (for example, memory) or may be managed using a management table.
- the input/output information may be overwritten, updated, or added.
- the output information may be deleted.
- the input information may be transmitted to another device.
- the determination may be performed by a value represented by 1 bit (whether 0 or 1), may be performed by a Boolean value (Boolean: true or false), and may be performed by comparing numerical values (for example, a predetermined value). Value comparison).
- the notification of the predetermined information (for example, the notification of “being X”) is not limited to the explicit notification, and is performed implicitly (for example, the notification of the predetermined information is not performed). Good.
- software, instructions, information, etc. may be transmitted and received via a transmission medium.
- the software uses a wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) websites, When sent from a server, or other remote source, at least one of these wired and wireless technologies is included within the definition of transmission medium.
- wired technology coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.
- wireless technology infrared, microwave, etc.
- data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description include voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any of these. May be represented by a combination of
- At least one of the channel and the symbol may be a signal (signaling).
- the signal may also be a message.
- a component carrier (Component Carrier: CC) may be called a carrier frequency, a cell, a frequency carrier, or the like.
- system and “network” used in this disclosure are used interchangeably.
- the information, parameters, etc. described in the present disclosure may be represented by using an absolute value, may be represented by using a relative value from a predetermined value, or by using other corresponding information. May be represented.
- the radio resources may be those indicated by the index.
- Base Station BS
- Wireless Base Station Wireless Base Station
- NodeB NodeB
- eNodeB eNodeB
- gNodeB gNodeB
- a base station may be referred to by terms such as macro cell, small cell, femto cell, and pico cell.
- a base station can accommodate one or more (eg, three) cells (also called sectors). When 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 (e.g., a small indoor base station (Remote Radio Radio). Head: RRH) can also provide communication services.
- a base station subsystem e.g., a small indoor base station (Remote Radio Radio). Head: RRH) can also provide communication services.
- cell refers to a part or the entire coverage area of at least one of the base station and the base station subsystem that provide communication services in this coverage.
- MS mobile station
- UE user equipment
- Mobile stations are defined by those skilled in the art as 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. 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 transmission device, a reception device, a communication device, or the like.
- 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 type or unmanned type).
- At least one of the base station and the mobile station also 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 Internet of Things (IoT) device such as a sensor.
- IoT Internet of Things
- the base station in the present disclosure may be read as a mobile station (user terminal, hereinafter the same).
- the communication between base stations and mobile stations has been replaced with communication between multiple mobile stations (eg, Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.)
- the mobile station may have the function of the base station.
- the wording such as “up” and “down” may be replaced with the wording corresponding to the terminal-to-terminal communication (for example, “side”).
- the uplink channel and the downlink channel may be replaced with the side channel.
- the mobile station in the present disclosure may be read as a base station.
- the base station may have the function of the mobile station.
- connection means any direct or indirect connection or coupling between two or more elements, and It can include the presence of one or more intermediate elements between two elements that are “connected” or “coupled.”
- the connections or connections between the elements may be physical, logical, or a combination thereof.
- connection may be read as “access”.
- two elements are in the radio frequency domain, with at least one of one or more wires, cables and printed electrical connections, and as some non-limiting and non-exhaustive examples. , Can be considered to be “connected” or “coupled” to each other, such as with electromagnetic energy having wavelengths in the microwave and light (both visible and invisible) regions.
- the reference signal can also be abbreviated as Reference Signal (RS), or may be referred to as Pilot depending on the applied standard.
- RS Reference Signal
- the phrase “based on” does not mean “based only on,” unless expressly specified otherwise. In other words, the phrase “based on” means both "based only on” and “based at least on.”
- references to elements using designations such as “first”, “second”, etc. as used in this disclosure 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, references to the first and second elements do not mean that only two elements may be employed there, or that the first element must precede the second element in any way.
- 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”.
- the terms “remove”, “coupled” and the like may be construed similarly as “different”.
- Wireless communication system 20 NG-RAN 30 CC 40 SSB 100 gNB 200 UE 210 transmitter 220 receiver 230 controller 1001 processor 1002 memory 1003 storage 1004 communication device 1005 input device 1006 output device 1007 bus
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Abstract
Description
図1は、本実施形態に係る無線通信システム10の全体概略構成図である。無線通信システム10は、5G New Radio(NR)に従った無線通信システムであり、Next Generation-Radio Access Network 20(以下、NG-RAN20、及びユーザ装置200(以下、UE200)を含む。
・FR2(Frequency Range 2):24,250~52,600MHz
1CC当りのチャネル帯域幅は、FR1では最大100MHz(30もしくは60kHzのサブキャリア間隔適用時)であり、FR2では最大400MHz(120kHzのサブキャリア間隔適用時)である。
次に、無線通信システム10の機能ブロック構成について説明する。具体的には、UE200の機能ブロック構成について説明する。
次に、無線通信システム10の動作について説明する。具体的には、UE200による受信品質の測定対象となる副コンポーネントキャリア(SCC)選択動作について説明する。
上述したように、図5は、FR1、及びFR2のIntra-Frequencyを利用したCAにおけるコンポーネントキャリア(CC)の割当例を示す。具体的には、図5では、3つの割当例が示されている。
図6は、UE200によるSCCの選択動作フローを示す。図6に示すように、UE200は、PCCがFR2に割り当てられているか否かを判定する(S10)。
図7は、無線リソース制御レイヤ(RRCレイヤ)におけるメッセージの送受信シーケンスの一例を示す。
上述した実施形態によれば、以下の作用効果が得られる。具体的には、UE200は、FR2のIntra-Frequencyバンド内に複数のSCCのみが割り当てられている場合、当該複数のSCCのうち、RSRPの測定対象となっているSCCを選択する。
以上、実施例に沿って本発明の内容を説明したが、本発明はこれらの記載に限定されるものではなく、種々の変形及び改良が可能であることは、当業者には自明である。
20 NG-RAN
30 CC
40 SSB
100 gNB
200 UE
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
1007 バス
Claims (5)
- ユーザ装置であって、
前記ユーザ装置は、所定周波数レンジの所定バンド内に割り当てられた複数のコンポーネントキャリアを用いてキャリアアグリゲーションを実行し、
前記所定バンド内に複数の副コンポーネントキャリアのみが割り当てられている場合、前記複数の副コンポーネントキャリアのうち、受信品質の測定対象となっている副コンポーネントキャリアを選択する制御部と、
前記受信品質の測定結果を送信する送信部と
を備えるユーザ装置。 - 前記制御部は、Reference Signal Received Powerの測定対象となっている前記副コンポーネントキャリアを選択する請求項1に記載のユーザ装置。
- 前記制御部は、前記受信品質の測定対象となっている前記副コンポーネントキャリアが複数存在する場合、前記受信品質の測定対象となっている前記副コンポーネントキャリアの何れかを選択する請求項1に記載のユーザ装置。
- ユーザ装置であって、
前記ユーザ装置は、所定周波数レンジの所定バンド内に割り当てられた複数のコンポーネントキャリアを用いてキャリアアグリゲーションを実行し、
前記所定バンド内に複数の副コンポーネントキャリアのみが割り当てられている場合、前記複数の副コンポーネントキャリアのうち、受信品質の測定対象となる副コンポーネントキャリアを指定する設定情報を受信する受信部と、
前記設定情報に基づいて測定された受信品質の測定結果を送信する送信部と
を備えるユーザ装置。 - 前記受信部は、Reference Signal Received Powerの測定対象となる前記副コンポーネントキャリアを指定する前記設定情報を受信する請求項4に記載のユーザ装置。
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EP19914772.9A EP3927042A1 (en) | 2019-02-14 | 2019-02-14 | User equipment |
PCT/JP2019/005410 WO2020166018A1 (ja) | 2019-02-14 | 2019-02-14 | ユーザ装置 |
US17/431,129 US12088515B2 (en) | 2019-02-14 | 2019-02-14 | User equipment |
CN201980091791.4A CN113424619B (zh) | 2019-02-14 | 2019-02-14 | 用户装置 |
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WO2023010480A1 (en) * | 2021-08-05 | 2023-02-09 | Apple Inc. | Carrier specific scaling factor for deactivated pscell |
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US11477760B2 (en) * | 2019-12-19 | 2022-10-18 | Qualcomm Incorporated | Frequency diversity techniques for single frequency networks |
US11825373B2 (en) * | 2020-04-24 | 2023-11-21 | Qualcomm Incorporated | Reference measurement timing selection for wireless communication mobility |
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JP5474003B2 (ja) * | 2011-07-28 | 2014-04-16 | 株式会社Nttドコモ | 移動通信方法、移動局及び無線基地局 |
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HUAWEI ET AL.: "CR for measurement capability (section 9.2.3.2)", 3GPP TSG-RAN WG4 #89 R4- 1815084, 2 November 2018 (2018-11-02), XP051483737 * |
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WO2023010480A1 (en) * | 2021-08-05 | 2023-02-09 | Apple Inc. | Carrier specific scaling factor for deactivated pscell |
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US20220123878A1 (en) | 2022-04-21 |
CN113424619A (zh) | 2021-09-21 |
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