WO2020179037A1 - ユーザ装置及び基地局装置 - Google Patents
ユーザ装置及び基地局装置 Download PDFInfo
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- WO2020179037A1 WO2020179037A1 PCT/JP2019/008967 JP2019008967W WO2020179037A1 WO 2020179037 A1 WO2020179037 A1 WO 2020179037A1 JP 2019008967 W JP2019008967 W JP 2019008967W WO 2020179037 A1 WO2020179037 A1 WO 2020179037A1
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- carrier
- random access
- serving cell
- access procedure
- base station
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present invention relates to a user device and a base station device in a wireless communication system.
- NR New Radio
- LTE Long Term Evolution
- Non-Patent Document 2 uses random access for synchronization establishment or scheduling request between the user equipment and base station equipment, as in LTE.
- CBRA Contention based random access
- CFRA Contention free random access
- a NUL (Normal Uplink) carrier or a SUL (Supplementary Uplink) carrier may be selected.
- the serving cell supports SUL and the user equipment does not support SUL, the user equipment sometimes executes a redundant determination operation related to the use of SUL.
- the present invention has been made in view of the above points, and an object thereof is to execute an efficient random access procedure.
- a transmitter that transmits a signal related to a random access procedure in a serving cell
- a receiver that receives a signal related to the random access procedure in the serving cell
- It has a control unit that determines a carrier to be used for the random access procedure set in the serving cell.
- the control unit determines whether or not a first carrier is set in the serving cell, and when the first carrier is set in the serving cell, the control unit sets a first carrier of the serving cell.
- the control unit determines to use the first carrier in a random access procedure, the carrier to be used in the random access procedure.
- a user apparatus is provided in which the action of determining is performed at at least one of the MAC (Media Access Control) layer and the RRC (Radio Resource Control) layer.
- an efficient random access procedure can be executed.
- FIG. 3 is a diagram for explaining a wireless communication system according to an embodiment of the present invention. It is a sequence diagram for explaining an example (1) of a random access procedure. It is a sequence diagram for explaining an example (2) of a random access procedure. It is a figure for explaining an example of NUL and SUL. It is a sequence diagram for demonstrating an example of the operation of carrier selection of a random access procedure performed in a MAC (Media Access Control) layer. It is a sequence diagram for demonstrating the example of operation
- MAC Media Access Control
- RRC Radio Resource Control
- the existing technology is appropriately used for the operation of the wireless communication system according to the embodiment of the present invention.
- the existing technology is, for example, existing LTE, but is not limited to existing LTE.
- LTE Long Term Evolution
- LTE-Advanced and LTE-Advanced and subsequent schemes eg, NR
- SS Synchronization signal
- PSS Primary SS
- SSS Secondary SS
- PBCH Physical broadcast channel
- PRACH Physical random
- the duplex system may be a TDD (Time Division Duplex) system, an FDD (Frequency Division Duplex) system, or other (for example, Flexible Duplex) system. It may be a method.
- “configuring” the wireless parameter and the like may mean that a predetermined value is set in advance (Pre-configure), or the base station device 10 or The wireless 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 in the embodiment of the present invention includes a base station device 10 and a user device 20, as shown in FIG. Although one base station apparatus 10 and one user apparatus 20 are shown in FIG. 1, this is an example, and a plurality of each may be provided.
- the base station device 10 is a communication device that provides one or more cells and performs wireless communication with the user device 20.
- the physical resource of the radio signal is 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 device 10 transmits a synchronization signal and system information to the user device 20. Synchronous signals are, for example, NR-PSS and NR-SSS.
- the system information is transmitted by, for example, NR-PBCH, and is also referred to as broadcast information. As illustrated in FIG.
- the base station device 10 transmits a control signal or data to the user device 20 by DL (Downlink), and receives a control signal or data from the user device 20 by UL (Uplink). Both the base station device 10 and the user device 20 can perform beamforming to transmit and receive signals. Further, both the base station device 10 and the user device 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Moreover, both the base station apparatus 10 and the user apparatus 20 may communicate via SCell (Secondary Cell) and PCell (Primary Cell) by CA (Carrier Aggregation).
- SCell Secondary Cell
- PCell Primary Cell
- 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). As shown in FIG. 1, the user equipment 20 receives a control signal or data from the base station apparatus 10 in DL and transmits the control signal or data to the base station apparatus 10 in UL, thereby providing the wireless communication system. Use various communication services.
- user equipment 20 uses a random access preamble or UE (User Equipment) identifier as a UL signal at the base station.
- the base station apparatus 10 transmits the information to the user apparatus 20 as a DL signal, and transmits the information to the user apparatus 20 to perform random access response and collision resolution.
- FIG. 2 is a sequence diagram for explaining an example (1) of the random access procedure.
- the example of the random access procedure shown in FIG. 2 is a collision random access procedure.
- the user apparatus 20 transmits a random access preamble to the base station apparatus 10.
- the base station apparatus 10 transmits a random access response to the user apparatus 20 (S12).
- the user apparatus 20 performs the transmission scheduled by the random access response to the base station apparatus 10 (S13).
- information identifying the user device 20 is transmitted.
- the base station apparatus 10 transmits information for performing collision resolution to the user apparatus 20 (S14). If the conflict resolution is successful, the random access procedure is successfully completed.
- FIG. 3 is a sequence diagram for explaining an example (2) of the random access procedure.
- An example of the random access procedure shown in FIG. 3 is a non-collision random access procedure.
- the base station apparatus 10 allocates the random access preamble to the user apparatus 20.
- the user apparatus 20 transmits the allocated random access preamble to the base station apparatus 10 (S22).
- the base station device 10 transmits a random access response to the user device 20.
- FIG. 4 is a diagram for explaining an example of NUL and SUL.
- a NUL (Normal Uplink) carrier and a SUL (Supplementary Uplink) carrier are set separately in the frequency domain.
- the SUL carrier is set to a lower frequency band than the NUL carrier.
- the user device 20 uses a NUL carrier or a SUL carrier to perform a random access procedure.
- FIGS. 5 and 6 are flowcharts for explaining an example of the carrier selection operation of the random access procedure according to the embodiment of the present invention.
- the operation of selecting a carrier which is a part of the random access procedure in the user apparatus 20 will be described with reference to FIGS. 5 and 6.
- the operation may be an operation mainly performed in the MAC (Media Access Control) layer, or as shown in FIG. 6, the operation is mainly performed in the RRC (Radio Resource Control) layer. It may be an operation. Further, it may be a combination of operations of both layers.
- MAC Media Access Control
- RRC Radio Resource Control
- step S31 the user equipment 20 starts a random access procedure in the serving cell. Then, the user apparatus 20 flushes the message 3 buffer, sets the preamble transmission counter to 1, sets the preamble power ramping counter to 1, and sets the preamble backoff to 0 ms (S32).
- step S33 the user device 20 determines whether the carrier used for random access is explicitly signaled. If the carrier used for random access is explicitly signaled (YES in S33), the process proceeds to step S34, and if the carrier used for random access is not explicitly signaled (NO in S33), step S35 is performed. move on.
- step S34 the user device 20 uses the signaled carrier for the random access procedure and sets the maximum power.
- step S35 the user equipment 20 determines whether or not SUL is set in the serving cell. If SUL is set in the serving cell (YES in S35), the process proceeds to step S36, and if SUL is not set in the serving cell (NO in S35), the process proceeds to step S39.
- step S36 the user device 20 determines whether or not to support the SUL of the serving cell. If the SUL of the serving cell is supported (YES in S36), the process proceeds to step S37. If the SUL of the serving cell is not supported (NO in S36), the process proceeds to step S39.
- the determination in step S36 may be whether or not the user apparatus 20 supports a band combination including the SUL band applied to the serving cell.
- step S37 the user device 20 determines whether or not the RSRP (Reference Signal Received Power) of the DL (Downlink) path loss reference is less than a predetermined threshold value. If the RSRP of the DL path loss reference is less than the predetermined threshold value (YES in S37), the process proceeds to step S38, and if the RSRP of the DL path loss reference is not less than the predetermined threshold value (NO in S37), the process proceeds to step S39.
- RSRP Reference Signal Received Power
- step S38 the user device 20 uses the SUL carrier for the random access procedure and sets the maximum power.
- step S39 the user apparatus 20 uses the NUL carrier for the random access procedure and sets the maximum power.
- step S41 the user device 20 determines whether or not the SUL information exists in the setting information of the serving cell. If the SUL information exists (YES in S41), the process proceeds to step S42. If the SUL information does not exist (NO in S41), the selection operation ends.
- step 42 the user device 20 determines whether or not to support one or more frequency bands of the frequency bands shown in the frequency band list for SUL. When one or more frequency bands are supported (YES in S42), the process proceeds to step S43, and when one or more frequency bands are not supported (NO in S42), the selection operation ends.
- step 43 the user apparatus 20 determines whether to support at least one spectrum emission in the maximum power list for the supported frequency bands. When at least one spectrum emission is supported (YES in S43), the process proceeds to step S44, and when at least one spectrum emission is not supported (NO in S43), the selection operation ends.
- step S44 the user device 20 determines whether or not to support the bandwidth of the initial uplink BWP (Bandwidth Part).
- the process proceeds to step S45, and when the bandwidth of the initial uplink BWP is not supported (NO in S44), the selection operation ends.
- step S45 the user apparatus 20 determines that SUL is set in the serving cell, and in step 46, applies a predetermined spectrum emission and a predetermined maximum power.
- the determination that SUL is set in the serving cell in step S45 leads to the operation when SUL is set in the serving cell in the existing random access procedure of the MAC layer.
- the user equipment 20 can efficiently select the carrier to be used in the random access procedure using the SUL carrier or the NUL carrier.
- Example of regulation of carrier selection operation 7A and 7B are diagrams for explaining an example of the regulation of the carrier selection operation of the random access procedure performed in the MAC (Media Access Control) layer, and in the MAC (Media Access Control) layer of FIG. Corresponds to a sequence diagram for explaining an example of a carrier selection operation of a random access procedure performed.
- the provision of "if the RSRP of the downlink pathloss reference is less than rsrp-Threshold SSB-SUL" in FIG. 7A states that the user device 20 is the DL (Downlink) path loss reference RSRP (Reference Signal Received) in step S37 of FIG. Power) corresponds to the operation of determining whether or not it is less than a predetermined threshold value.
- RSRP Reference Signal Received
- FIG. 8A and 8B are diagrams for explaining an example of the regulation of the carrier selection operation of the random access procedure performed in the RRC (Radio Resource Control) layer, and in the RRC (Radio Resource Control) layer of FIG. It corresponds to a sequence diagram for explaining an example of the operation of the carrier selection of the random access procedure performed.
- FIG. 8A shows a procedure performed after the user apparatus 20 receives the broadcast information (SIB1).
- the provision of "if supplementaryUplink is present in servingCellConfigCommon" in FIG. 8B corresponds to the operation of the user device 20 in step S41 of FIG. 6 to determine whether or not SUL information exists in the setting information of the serving cell. To do.
- the base station device 10 and the user device 20 include a function for implementing the above-described embodiment.
- the base station apparatus 10 and the user apparatus 20 may each have only a part of the functions in the embodiment.
- FIG. 9 is a diagram showing an example of the functional configuration of the base station device 10.
- the base station device 10 includes a transmission unit 110, a reception unit 120, a setting unit 130, and a control unit 140.
- the functional configuration shown in FIG. 9 is merely an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be executed.
- the transmitting unit 110 includes a function of generating a signal to be transmitted to the user device 20 side and wirelessly transmitting the signal.
- the reception unit 120 includes a function of receiving various signals transmitted from the user device 20 and acquiring, for example, information of a higher layer from the received signals. Further, the transmission unit 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL/UL control signal, DL/UL data signal, etc. to the user apparatus 20.
- the setting unit 130 stores preset setting information and various setting information to be transmitted to the user device 20 in the storage device, and reads them out from the storage device as needed.
- the contents of the setting information are, for example, settings related to random access.
- the control unit 140 executes a random access procedure with the user device 20 as described in the embodiment.
- the functional unit related to signal transmission in the control unit 140 may be included in the transmission unit 110, and the functional unit related to signal reception in the control unit 140 may be included in the reception unit 120.
- FIG. 10 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, a setting unit 230, and a control unit 240.
- the functional configuration shown in FIG. 7 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be executed.
- the transmitter 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
- the receiving unit 220 wirelessly receives various signals and acquires signals of higher layers from the received physical layer signals. Further, the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals and the like transmitted from the base station apparatus 10. Further, for example, the transmission unit 210 performs P2CH communication to the other user apparatus 20 with PSCCH (Physical Sidelink Control Channel), PSSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), and PSBCH (Physical Sidelink Broadcast Channel). ) Etc., and the receiving unit 220 receives the PSCCH, PSCH, PSDCH, PSBCH, etc. from the other user device 20.
- PSCCH Physical Sidelink Control Channel
- PSSCH Physical Sidelink Shared Channel
- PSDCH Physical Sidelink Discovery Channel
- PSBCH Physical Sidelink Broadcast Channel
- the setting unit 230 stores various setting information received from the base station device 10 or the user device 20 by the receiving unit 220 in the storage device, and reads it out from the storage device as needed.
- the setting unit 230 also stores preset setting information.
- the contents of the setting information are, for example, settings related to random access.
- the control unit 240 executes a random access procedure with the base station device 10 as described in the embodiment.
- the functional unit related to signal transmission in the control unit 240 may be included in the transmission unit 210, and the functional unit related to signal reception in the control unit 240 may be included in the reception unit 220.
- each functional block may be realized by using one device physically or logically coupled, or directly or indirectly (for example, two or more devices physically or logically separated). , 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, configuration, reconfiguring, allocating, mapping, assigning, etc., but not limited to these. I can't.
- a functional block that functions transmission is called a transmitting unit or a transmitter.
- the implementation method is not particularly limited.
- the base station device 10, the user device 20, and the like according to the embodiment of the present disclosure may function as a computer that performs the process of the wireless communication method of the present disclosure.
- FIG. 11 is a diagram illustrating an example of a hardware configuration of the base station device 10 and the user device 20 according to the embodiment of the present disclosure.
- the above-mentioned base station device 10 and user device 20 are physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. May be done.
- the word “apparatus” can be read as a circuit, device, unit, or the like.
- the hardware configuration of the base station device 10 and the user device 20 may be configured to include one or more of the devices shown in the figure, or may be configured not to include some of the devices.
- Each function in the base station device 10 and the user device 20 causes a predetermined software (program) to be loaded onto hardware such as the processor 1001, the storage device 1002, etc., so that the processor 1001 performs an arithmetic operation and communication by the communication device 1004. It is realized by controlling or at least one of reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.
- the processor 1001 operates an operating system to control the entire computer, for example.
- the processor 1001 may be composed of 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 control unit 140, the control unit 240, and the like described above may be realized by the processor 1001.
- the processor 1001 reads a program (program code), a software module, data, or the like from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002, and executes various processes according to these.
- a program that causes a computer to execute at least part of the operations described in the above-described embodiments is used.
- the control unit 140 of the base station device 10 illustrated in FIG. 9 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
- the control unit 240 of the user device 20 shown in FIG. 10 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
- the various processes described above are executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001.
- the processor 1001 may be implemented by one or more chips.
- the program may be transmitted from the network via an electric communication line.
- the storage device 1002 is a computer-readable recording medium, for example, by at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), and the like. It may be configured.
- the storage device 1002 may be called a register, a cache, a main memory (main storage device), or the like.
- the storage device 1002 can store a program (program code), a software module, or the like that can be executed to implement the communication method according to the embodiment of the present disclosure.
- the auxiliary storage device 1003 is a computer-readable recording medium, 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, Blu).
- -It may be composed of at least one of a ray (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, and the like.
- the above-described storage medium may be, for example, a database including at least one of the storage device 1002 and the auxiliary storage device 1003, a server, or another appropriate 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, 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, etc. in order to realize at least one of frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD). May be composed of
- FDD Frequency Division Duplex
- TDD time division duplex
- the transmitter/receiver may be implemented by physically or logically separating the transmitter and the receiver.
- 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 outputs 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 storage device 1002 is connected by a bus 1007 for communicating information.
- the bus 1007 may be configured using a single bus, or may be configured using different buses for each device.
- the base station device 10 and the user device 20 include 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), and the like. It may be configured to include hardware, and the hardware may realize a part or all of each functional block. For example, the processor 1001 may be implemented using at least one of these hardware.
- a transmitter that transmits a signal related to a random access procedure in a serving cell
- a receiver that receives a signal related to a random access procedure in the serving cell
- the serving cell a control unit that determines a carrier to be used for the random access procedure set to, the control unit determines whether the first carrier is set in the serving cell, and the first in the serving cell. If a carrier is set, the control unit determines whether to support the first carrier of the serving cell, and if the first carrier of the serving cell is supported, the control unit is the first carrier. Is used in a random access procedure, and an operation of determining a carrier to be used in the random access procedure is performed in at least one of a MAC (Media Access Control) layer and an RRC (Radio Resource Control) layer.
- a device is provided.
- the user device 20 can efficiently select the carrier to be used in the random access procedure using the SUL carrier or the NUL carrier. That is, an efficient random access procedure can be executed.
- the first carrier may be SUL (Supplementary Uplink).
- SUL Supplemental Uplink
- the control unit may decide to use the second carrier for the random access procedure if the serving cell is set with a first carrier and does not support the first carrier of the serving cell. .. With this configuration, the user apparatus can efficiently select the carrier to be used in the random access procedure using the SUL carrier or the NUL carrier.
- the second carrier may be NUL (Normal Uplink).
- NUL Normal Uplink
- a receiving unit that receives a signal related to the random access procedure in the serving cell from the user device, and a transmitting unit that transmits a signal related to the random access procedure in the serving cell to the user device.
- the control unit has a control unit for determining a carrier to be used for the random access procedure set in the serving cell, and the control unit is used when the first carrier is set in the serving cell and the user device is described.
- the operation of deciding to use the first carrier for the random access procedure and determining the carrier to be used for the random access procedure is the MAC (Media Access Control) layer and A base station apparatus is provided, which is performed at at least one of the RRC (Radio Resource Control) layers.
- the user device 20 can efficiently select the carrier to be used in the random access procedure using the SUL carrier or the NUL carrier. That is, an efficient random access procedure can be executed.
- 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 the plurality of components.
- the processing order may be changed as long as there is no contradiction.
- the base station apparatus 10 and the user apparatus 20 have been described using functional block diagrams for convenience of processing description, such an apparatus may be realized by hardware, software, or a combination thereof.
- the software operated by the processor included in the base station device 10 according to the embodiment of the present invention and the software operated by the processor included in the user device 20 according to the embodiment of the present invention are respectively a random access memory (RAM), a flash memory, and a read memory. It may be stored in a dedicated memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other suitable storage medium.
- 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, DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, It may be implemented by broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof, and RRC signaling may be called an RRC message, for example, RRC message. It may be a connection setup (RRC Connection Setup) message, an 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 (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), other systems using appropriate systems, and extensions based on these. It may be applied to at least one of the next-generation systems. Also, 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 performed by the base station apparatus 10 in the present specification may be performed by its upper node (upper node).
- various operations performed for communication with the user device 20 are other than the base station device 10 and the base station device 10. It is clear that this can be done by at least one of the network nodes (eg, MME or S-GW, etc., but not limited to these).
- the network nodes eg, MME or S-GW, etc., but not limited to these.
- the other network nodes may be a combination of a plurality of other network nodes (for example, MME and S-GW). Good.
- Information, signals, etc. described in the present disclosure may 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.
- Information that has been input and output may be stored in a specific location (for example, memory), or may be managed using a management table. Information that is input/output may be overwritten, updated, or added. The output information and the like may be deleted. The input information and the like may be transmitted to another device.
- the determination in the present disclosure 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). , Comparison with a predetermined value).
- 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, features, etc. should be broadly interpreted to mean.
- software, instructions, information, etc. may be transmitted and received via a transmission medium.
- the software uses a wired technology (coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL: Digital Subscriber Line), 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, optical fiber cable, twisted pair, digital subscriber line (DSL: Digital Subscriber Line), 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 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 expressed using absolute values, relative values from predetermined values, or using other corresponding information. May be represented.
- the radio resources may be those indicated by the index.
- base station Base Station
- radio base station base station
- base station device fixed station
- NodeB NodeB
- eNodeB eNodeB
- GNB nodeB
- access point access point
- transmission point transmission point
- reception point transmission/reception point
- cell cell
- cell group carrier
- component carrier component carrier
- a base station can accommodate one or more (eg, three) cells.
- a base station accommodates multiple cells, the entire coverage area of the base station can be partitioned into multiple smaller areas, each smaller area being defined by a base station subsystem (eg, indoor small base station (RRH: Communication service can also be provided by Remote Radio Head.
- RRH indoor small base station
- the term "cell” or “sector” means a part or the whole of the coverage area of at least one of the base station and the base station subsystem that perform communication service in this coverage. Refers to.
- MS Mobile Station
- UE User Equipment
- a mobile station can be 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, by a person skilled in the art. 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 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 IoT (Internet of Things) device such as a sensor.
- IoT Internet of Things
- the base station in the present disclosure may be replaced by the user terminal.
- the communication between the base station and the user terminal is replaced with communication between a plurality of user devices 20 (eg, may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.)
- a plurality of user devices 20 eg, may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.
- the user apparatus 20 may have the function of the base station apparatus 10 described above.
- words such as "up” and “down” may be read as words corresponding to inter-terminal communication (for example, "side").
- the uplink channel and the downlink channel may be replaced with the side channel.
- the user terminal in the present disclosure may be replaced by the base station.
- the base station may have the function of the above-mentioned user terminal.
- determining and “determining” as used in this disclosure may encompass a wide variety of actions.
- “Judgment” and “decision” are, for example, judgment, calculation, computing, processing, processing, deriving, investigating, and looking up, search, inquiry. It can include (eg, searching in a table, database or another data structure), ascertaining as being considered a “judgment” or “decision”.
- “decision” and “decision” include receiving (eg, receiving information), transmitting (eg, transmitting information), input (input), output (output), access (accessing) (for example, accessing data in a memory) may be regarded as “judging” and “deciding”.
- judgment and “decision” are considered to be “judgment” and “decision” when things such as resolving, selecting, choosing, establishing, establishing, and comparing are done. May be included. That is, the “judgment” and “decision” may include considering some action as “judgment” and “decision”. Further, “judgment (decision)” may be read as “assuming", “expecting”, “considering” and the like.
- 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 elements that are “connected” or “coupled”.
- the connections or connections between the elements may be physical, logical, or a combination thereof. For example, “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 may be abbreviated as RS (Reference Signal), or may be referred to as a pilot (Pilot) depending on the applied standard.
- RS Reference Signal
- Pilot pilot
- 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 quantity or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Therefore, references to the first and second elements do not mean that only two elements can be adopted, or that the first element must somehow precede the second element.
- 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 referred to as a subframe. A subframe may also 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.
- Numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel.
- Numerology includes, for example, subcarrier spacing (SCS: SubCarrier Spacing), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI: Transmission Time Interval), number of symbols per TTI, radio frame configuration, transceiver At least one of a specific filtering process performed in the frequency domain and a specific windowing process performed by the transceiver in the time domain may be shown.
- a slot may be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.) in the time domain.
- a slot may be a time unit based on numerology.
- a slot may include multiple minislots. Each minislot may be composed of one or more symbols in the time domain. The minislot may also be called a subslot. Minislots may be configured with fewer symbols than slots.
- a PDSCH (or PUSCH) transmitted in time units larger than the minislot may be referred to as a PDSCH (or PUSCH) mapping type A.
- the PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (or PUSCH) mapping type B.
- Radio frame, subframe, slot, minislot, and symbol all represent the time unit for signal transmission. Radio frames, subframes, slots, minislots, and symbols may have different names corresponding to them.
- one subframe may be called a transmission time interval (TTI)
- TTI transmission time interval
- TTI transmission time interval
- TTI transmission time interval
- TTI transmission time interval
- TTI means, for example, a minimum time unit of scheduling in wireless communication.
- the base station schedules each user device 20 to allocate radio resources (frequency bandwidth that can be used in each user device 20, transmission power, etc.) in TTI units.
- the definition of TTI is not limited to this.
- the TTI may be a transmission time unit of a channel-encoded data packet (transport block), code block, codeword, or the like, or may be a processing unit of scheduling, link adaptation, or the like.
- the time interval eg, the number of symbols
- the transport block, code block, codeword, etc. may be shorter than the TTI.
- one or more TTIs may be the minimum time unit for scheduling.
- the number of slots (the number of mini-slots) forming the minimum time unit of the scheduling may be controlled.
- a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, or the like.
- a TTI shorter than the normal TTI may be called a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a minislot, a subslot, a slot, and the like.
- a long TTI (eg, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms, and a short TTI (eg, shortened TTI, etc.) is less than the TTI length of the long TTI and 1 ms. It may be read as a TTI having the above TTI length.
- a resource block is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers in the frequency domain.
- the number of subcarriers included in the RB may be the same regardless of the numerology, and may be 12, for example.
- the number of subcarriers included in the RB may be determined based on numerology.
- the time domain of the RB may include one or more symbols, and may be 1 slot, 1 minislot, 1 subframe, or 1 TTI in length.
- One TTI, one subframe, etc. may be configured with one or a plurality of resource blocks.
- One or more RBs are physical resource blocks (PRBs: Physical RBs), subcarrier groups (SCGs: Sub-Carrier Groups), resource element groups (REGs: Resource Element Groups), PRB pairs, RB pairs, etc. May be called.
- PRBs Physical resource blocks
- SCGs Sub-Carrier Groups
- REGs Resource Element Groups
- PRB pairs RB pairs, etc. May be called.
- the resource block may be composed of one or more resource elements (RE: Resource Element).
- RE Resource Element
- 1 RE may be a radio resource area of 1 subcarrier and 1 symbol.
- a bandwidth part (may be called a partial bandwidth) may represent a subset of continuous common RBs (common resource blocks) for a certain numerology in a certain carrier.
- the common RB may be specified by the index of the RB based on the common reference point of the carrier.
- PRBs may be defined in a BWP and numbered within the BWP.
- BWP may include BWP for UL (UL BWP) and BWP for DL (DL BWP).
- BWP for UL
- DL BWP DL BWP
- one or more BWPs may be set in one carrier.
- At least one of the configured BWPs may be active, and the UE does not have to expect to send and receive a given signal/channel outside the active BWP.
- “cell”, “carrier”, and the like in the present disclosure may be read as “BWP”.
- the structure of the wireless frame, subframe, slot, minislot, symbol, etc. described above is just an 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, and included in RBs
- the number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP) length, and other configurations can be variously changed.
- 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 as “different” as well.
- 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.
- SUL is an example of the first carrier.
- NUL is an example of the second carrier.
- base station device 110 transmission unit 120 reception unit 130 setting unit 140 control unit 20 user device 210 transmission unit 220 reception unit 230 setting unit 240 control unit 1001 processor 1002 storage device 1003 auxiliary storage device 1004 communication device 1005 input device 1006 output device
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Abstract
Description
前記サービングセルにおけるランダムアクセス手順に係る信号を受信する受信部と、
前記サービングセルに設定されるランダムアクセス手順に使用するキャリアを決定する制御部とを有し、
前記制御部は、前記サービングセルに第1のキャリアが設定されているか否かを判定し、前記サービングセルに第1のキャリアが設定されている場合、前記制御部は、前記サービングセルの第1のキャリアをサポートするかを判定し、前記サービングセルの第1のキャリアをサポートする場合、前記制御部は、前記第1のキャリアをランダムアクセス手順に使用することを決定し、前記ランダムアクセス手順に使用するキャリアを決定する動作は、MAC(Media Access Control)レイヤ及びRRC(Radio Resource Control)レイヤの少なくともいずれかにおいて行われる、ユーザ装置が提供される。
ランダムアクセス手順の一部であるキャリアを選択する動作がMAC(Media Access Control)レイヤにおいて行われる例について図5を用いて説明する。
次に、ランダムアクセス手順の一部であるキャリアを選択する動作がRRC(Radio Resource Control)レイヤにおいて行われる例について図6を用いて説明する。
図7Aおよび図7Bは、MAC(Media Access Control)レイヤにおいて行われる、ランダムアクセス手順のキャリア選択の動作の規定の例を説明するための図であり、図5のMAC(Media Access Control)レイヤにおいて行われる、ランダムアクセス手順のキャリア選択の動作の例を説明するためのシーケンス図に対応する。
次に、これまでに説明した処理及び動作を実行する基地局装置10及びユーザ装置20の機能構成例を説明する。基地局装置10及びユーザ装置20は上述した実施例を実施する機能を含む。ただし、基地局装置10及びユーザ装置20はそれぞれ、実施例の中の一部の機能のみを備えることとしてもよい。
図9は、基地局装置10の機能構成の一例を示す図である。図9に示されるように、基地局装置10は、送信部110と、受信部120と、設定部130と、制御部140とを有する。図9に示される機能構成は一例に過ぎない。本発明の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10は、ユーザ装置20の機能構成の一例を示す図である。図10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、設定部230と、制御部240とを有する。図7に示される機能構成は一例に過ぎない。本発明の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。
上記実施形態の説明に用いたブロック図(図9及び図10)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。
以上、説明したように、本発明の実施の形態によれば、サービングセルにおけるランダムアクセス手順に係る信号を送信する送信部と、前記サービングセルにおけるランダムアクセス手順に係る信号を受信する受信部と、前記サービングセルに設定されるランダムアクセス手順に使用するキャリアを決定する制御部とを有し、前記制御部は、前記サービングセルに第1のキャリアが設定されているか否かを判定し、前記サービングセルに第1のキャリアが設定されている場合、前記制御部は、前記サービングセルの第1のキャリアをサポートするかを判定し、前記サービングセルの第1のキャリアをサポートする場合、前記制御部は、前記第1のキャリアをランダムアクセス手順に使用することを決定し、前記ランダムアクセス手順に使用するキャリアを決定する動作は、MAC(Media Access Control)レイヤ及びRRC(Radio Resource Control)レイヤの少なくともいずれかにおいて行われる、ユーザ装置が提供される。
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、基地局装置10及びユーザ装置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装置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 設定部
140 制御部
20 ユーザ装置
210 送信部
220 受信部
230 設定部
240 制御部
1001 プロセッサ
1002 記憶装置
1003 補助記憶装置
1004 通信装置
1005 入力装置
1006 出力装置
Claims (6)
- サービングセルにおけるランダムアクセス手順に係る信号を送信する送信部と、
前記サービングセルにおけるランダムアクセス手順に係る信号を受信する受信部と、
前記サービングセルに設定されるランダムアクセス手順に使用するキャリアを決定する制御部とを有し、
前記制御部は、前記サービングセルに第1のキャリアが設定されているか否かを判定し、前記サービングセルに第1のキャリアが設定されている場合、前記制御部は、前記サービングセルの第1のキャリアをサポートするかを判定し、前記サービングセルの第1のキャリアをサポートする場合、前記制御部は、前記第1のキャリアをランダムアクセス手順に使用することを決定し、前記ランダムアクセス手順に使用するキャリアを決定する動作は、MAC(Media Access Control)レイヤ及びRRC(Radio Resource Control)レイヤの少なくともいずれかにおいて行われる、ユーザ装置。 - 前記制御部は、所定の最大電力を設定する、請求項1記載のユーザ装置。
- 前記第1のキャリアは、SUL(Supplementary Uplink)である請求項1または2記載のユーザ装置。
- 前記制御部は、前記サービングセルに第1のキャリアが設定されており、かつ、前記サービングセルの第1のキャリアをサポートしない場合、第2のキャリアをランダムアクセス手順に使用することを決定する請求項3記載のユーザ装置。
- 前記第2のキャリアは、NUL(Normal Uplink)である請求項4記載のユーザ装置。
- サービングセルにおけるランダムアクセス手順に係る信号をユーザ装置から受信する受信部と、
前記サービングセルにおけるランダムアクセス手順に係る信号を前記ユーザ装置に送信する送信部と、
前記サービングセルに設定されるランダムアクセス手順に使用するキャリアを決定する制御部とを有し、
前記制御部は、前記サービングセルに第1のキャリアが設定されている場合、かつ、前記ユーザ装置が、前記サービングセルの第1のキャリアをサポートする場合、前記第1のキャリアをランダムアクセス手順に使用することを決定し、前記ランダムアクセス手順に使用するキャリアを決定する動作は、MAC(Media Access Control)レイヤ及びRRC(Radio Resource Control)レイヤの少なくともいずれかにおいて行われる、基地局装置。
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US20130010711A1 (en) * | 2011-07-06 | 2013-01-10 | Daniel Larsson | Random Access with Primary and Secondary Component Carrier Communications |
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- 2019-03-06 US US17/435,255 patent/US20220132585A1/en active Pending
- 2019-03-06 JP JP2021503355A patent/JP7221374B2/ja active Active
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- 2019-03-06 WO PCT/JP2019/008967 patent/WO2020179037A1/ja unknown
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Also Published As
Publication number | Publication date |
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JPWO2020179037A1 (ja) | 2020-09-10 |
US20220132585A1 (en) | 2022-04-28 |
EP3937585A4 (en) | 2022-08-31 |
CA3130519A1 (en) | 2020-09-10 |
JP7221374B2 (ja) | 2023-02-13 |
CN113545160A (zh) | 2021-10-22 |
EP3937585A1 (en) | 2022-01-12 |
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