WO2022208817A1 - 無線基地局及び端末 - Google Patents
無線基地局及び端末 Download PDFInfo
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- WO2022208817A1 WO2022208817A1 PCT/JP2021/014058 JP2021014058W WO2022208817A1 WO 2022208817 A1 WO2022208817 A1 WO 2022208817A1 JP 2021014058 W JP2021014058 W JP 2021014058W WO 2022208817 A1 WO2022208817 A1 WO 2022208817A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
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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
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
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- H—ELECTRICITY
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- H04W76/15—Setup of multiple wireless link connections
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
Definitions
- This disclosure relates to radio base stations and terminals that support carrier aggregation.
- the 3rd Generation Partnership Project (3GPP) has specified the 5th generation mobile communication system (also called 5G, New Radio (NR) or Next Generation (NG)), and the next generation specification called Beyond 5G, 5G Evolution or 6G We are also proceeding with 5G, 5G Evolution or 6G We are also proceeding with 5G, 5G Evolution or 6G We are also proceeding with 5G, 5G Evolution or 6G We are also proceeding with 5G, 5G Evolution or 6G We are also proceeding with 5G, 5G Evolution or 6G
- a terminal (User Equipment, UE) is assigned a serving cell identifier (servCellIndex) with the smallest value. It is stipulated that uplink control information (UCI: Uplink Control Information) is multiplexed on (PUSCH: Physical Uplink Shared Channel) (Non-Patent Document 1).
- UCI Uplink Control Information
- PUSCH Physical Uplink Shared Channel
- a secondary cell is configured based on a secondary cell identifier (SCellIndex), and a primary secondary cell (PSCell), which is a primary cell in multiple secondary cells, is configured based on a serving cell identifier (servCellIndex).
- SCellIndex secondary cell identifier
- PSCellIndex serving cell identifier
- SCellIndex assigned to the SCell is also applied to the SCell's servCellIndex.
- the UE multiplexes the UCI to the PUSCH of the serving cell to which the servCellIndex with the smallest value is assigned, but there is a possibility that the servCellIndex assigned to the PSCell and the SCellIndex assigned to the SCell overlap.
- the UE cannot determine which of the PUSCH of the PSCell and the PUSCH of the SCell should be multiplexed with the UCI. .
- One aspect of the present disclosure is a secondary cell identifier assigned to a secondary cell and a serving cell identifier assigned to a primary/secondary cell, which is a primary cell in the plurality of secondary cells included in the same cell group, and a control unit that sets the identifier to a different value.
- control unit 140 and a transmission unit (RRC processing unit 120) that transmits configuration information including the secondary cell identifier and the serving cell identifier to the terminal (gNB 100).
- One aspect of the present disclosure is a secondary cell identifier assigned to a secondary cell, and a serving cell identifier assigned to a primary/secondary cell that is a primary cell in a plurality of the secondary cells included in the same cell group Configuration information including a serving cell identifier
- RRC processing unit 220 When the secondary cell identifier and the serving cell identifier overlap with the receiving unit (RRC processing unit 220), uplink control information is multiplexed on the physical uplink shared channel transmitted via the primary/secondary cell.
- FIG. 1 is an overall schematic configuration diagram of a radio communication system 10.
- FIG. 2 is a functional block configuration diagram of the gNB100.
- FIG. 3 is a functional block configuration diagram of UE200.
- FIG. 4 is a diagram showing an example where the SCellIndex assigned to the SCell and the servCellIndex assigned to the PSCell overlap.
- FIG. 5 is a diagram showing an example of a communication sequence between the UE 200 and the network according to Operation Example 1.
- FIG. FIG. 6 is a diagram showing a multiple operation flow of UCI to PUSCH in UE 200 according to operation example 2.
- FIG. 7 is a diagram showing an example of the hardware configuration of gNB100 and UE200.
- FIG. 1 is an overall schematic configuration diagram of a radio communication system 10 according to the present embodiment.
- the radio communication system 10 is a radio communication system according to 5G New Radio (NR), and includes a Next Generation-Radio Access Network 20 (hereinafter NG-RAN 20 and terminals 200 (User Equipment 200, hereinafter UE 200).
- NG-RAN 20 Next Generation-Radio Access Network 20
- UE 200 User Equipment 200
- the radio communication system 10 may be a radio communication system conforming to a scheme called Beyond 5G, 5G Evolution, or 6G.
- the NG-RAN 20 includes a radio base station 100 (hereinafter gNB 100).
- gNB 100 radio base station 100
- the specific configuration of the radio communication system 10 including the number of gNBs and UEs is not limited to the example shown in FIG.
- NG-RAN 20 actually includes multiple NG-RAN Nodes, specifically gNBs (or ng-eNBs), and is connected to a 5G-compliant core network (5GC, not shown). Note that NG-RAN 20 and 5GC may simply be referred to as a "network”.
- gNBs or ng-eNBs
- 5GC 5G-compliant core network
- the gNB100 is an NR-compliant radio base station and performs NR-compliant radio communication with the UE200.
- the gNB 100 and UE 200 may perform radio communication via radio bearers, specifically Signaling Radio Bearer (SRB) or DRB Data Radio Bearer (DRB).
- SRB Signaling Radio Bearer
- DRB DRB Data Radio Bearer
- the gNB100 and UE200 use Massive MIMO, which generates beams with higher directivity by controlling radio signals transmitted from multiple antenna elements, and carrier aggregation (CA), which bundles multiple component carriers (CC). ), and dual connectivity (DC) in which communication is performed simultaneously between the UE and each of a plurality of NG-RAN Nodes.
- Massive MIMO which generates beams with higher directivity by controlling radio signals transmitted from multiple antenna elements
- CA carrier aggregation
- CC component carriers
- DC dual connectivity
- a master cell group (MCG) and a secondary cell group (SCG) may be set in the DC (and CA).
- the MCG may include a primary cell (PCell), and the SCG may include a secondary cell (SCell).
- the SCell may include a primary/secondary cell (PSCell).
- PSCell is a type of SCell, but may be interpreted as a special SCell having functions equivalent to those of a PCell.
- PSCell may be interpreted as a CC that secures connectivity among CCs supported by SCell (which may be referred to as a secondary radio base station) in DC or Multi-RAT Dual Connectivity (MR-DC). .
- MR-DC Multi-RAT Dual Connectivity
- PUCCH Physical Uplink Control Channel
- CBRA contention-based random access procedure
- Radio Link Monitoring downlink radio quality monitoring
- control information may be transmitted and received in the downlink (DL) and uplink.
- DCI downlink control information
- UCI uplink control information
- PUCCH may be interpreted as a UL physical channel used for UCI transmission.
- UCI can be sent on either PUCCH or PUSCH depending on the situation. Note that the DCI may always be transmitted via a PDCCH (Physical Downlink Control Channel) and may not be transmitted via a PDSCH (Physical Downlink Shared Channel).
- PDCCH Physical Downlink Control Channel
- PDSCH Physical Downlink Shared Channel
- the UCI may include at least one of hybrid automatic repeat request (HARQ) acknowledgment (ACK)/negative acknowledgment (NACK), scheduling request (SR) from UE 200, and Channel State Information (CSI).
- HARQ hybrid automatic repeat request
- ACK acknowledgment
- NACK negative acknowledgment
- SR scheduling request
- CSI Channel State Information
- the UCI reporting procedure (3GPP TS38.213 Chapter 9) may be applied to both MCG and SCG.
- the terms secondary cell (which may include a plural form) and serving cell (which may include a plural form) refer to secondary cells (not including PSCells) and serving cells belonging to the SCG.
- PCell may refer to the PSCell of the SCG.
- the serving cell may simply be interpreted as the cell to which the UE 200 is connected, but more strictly, in the case of an RRC_CONNECTED UE in which CA is not set, only one serving cell is required to configure the PCell.
- serving cell may be interpreted to refer to a set of one or more cells, including the PCell and all PCells.
- FIG. 2 is a functional block configuration diagram of the gNB100.
- the gNB 100 includes a radio communication unit 110, an RRC processing unit 120, a CA processing unit 130 and a control unit 140.
- the radio communication unit 110 transmits downlink signals (DL signals) according to LTE.
- Radio communication section 110 also receives an uplink signal (UL signal) according to LTE.
- the RRC processing unit 120 executes various processes in the radio resource control layer (RRC). For example, RRC processing section 120 can transmit RRC Reconfiguration to UE 200 . Also, RRC processing section 120 can receive RRC Reconfiguration Complete, which is a response to RRC Reconfiguration, from UE 200 .
- RRC radio resource control layer
- the RRC processing unit 120 can transmit and receive other RRC layer messages (RRC Setup Request, RRC Setup, RRC Setup Complete, etc.).
- the RRC processing unit 120 can transmit configuration information including cell identification information to the UE 200 .
- RRC processing section 120 can transmit RRC Reconfiguration including CellGroupConfig to UE 200 .
- the information element (IE) of CellGroupConfig includes SCellIndex (secondary cell identifier) that uniquely identifies the SCell and servCellIndex (serving cell identifier) that uniquely identifies the serving cell within the same cell group, specifically the SCG. good.
- the RRC processing unit 120 may constitute a transmitting unit that transmits configuration information including the secondary cell identifier and the serving cell identifier to the UE200.
- the SCellIndex may also be applied to the servCellIndex (serving cell identifier) of the SCell.
- the servCellIndex IE relates to the short identifier (ID) used to identify the serving cell (PCell, PSCell or SCell), a value of 0 applies to the PCell, and the previously assigned SCellIndex may be applied to the SCell.
- the secondary cell identifier and/or serving cell identifier may not necessarily be included in CellGroupConfig, and may be included in other IEs.
- the CA processing unit 130 executes processing related to carrier aggregation (CA) and dual connectivity (DC).
- CA carrier aggregation
- DC dual connectivity
- CA processing section 130 performs configuration related to multiple component carriers (CC), cells (PCell/PSCell/SCell), and cell groups in order to support CA (and/or DC). good.
- CC component carriers
- PCell/PSCell/SCell PCell/PSCell/SCell
- cell groups in order to support CA (and/or DC). good.
- the CA processing unit 130 can acquire UCI multiplexed on PUCCH or PUSCH during CA (or DC).
- UCI can be transmitted on either PUCCH or PUSCH.
- it may be determined which cell's PUSCH the UCI is multiplexed on based on cell identification information, specifically, the value of servCellIndex.
- the control unit 140 controls each functional block that configures the gNB100.
- the control unit 140 can perform control regarding setting of identification information assigned to cells during CA or DC.
- control unit 140 can determine the value of the secondary cell identifier (SCellIndex) assigned to the secondary cell (SCell).
- SCellIndex is typically a numerical value such as a natural number, but is not necessarily limited to a numerical value.
- control unit 140 can determine the value of the serving cell identifier (servCellIndex) assigned to the serving cell.
- the value of servCellIndex is also typically a numerical value such as a natural number, but is not necessarily limited to a numerical value.
- control unit 140 can set different values for SCellIndex and servCellIndex assigned to SCGs included in the same cell group (specifically, SCG).
- control unit 140 determines the value of the servCellIndex and the value of the SCellIndex so that the servCellIndex assigned to the PSCell and the SCellIndex assigned to the SCell do not overlap within the same cell group (SCG). For example, when servCellIndex assigned to PSCell is set to 1, control section 140 may set a numerical value other than 1 (for example, 2 or later) to SCellIndex.
- control unit 140 may set different values for the SCellIndex assigned to the SCell and the servCellIndex assigned to the PSCell, which is the primary cell in a plurality of SCells included in the same cell group.
- FIG. 3 is a functional block configuration diagram of UE200. As shown in FIG. 3 , UE 200 includes radio communication section 210 , RRC processing section 220 , CA processing section 230 and control section 240 .
- the radio communication unit 210 transmits an uplink signal (UL signal) according to NR. Also, the radio communication unit 210 receives a downlink signal (DL signal) conforming to NR.
- UE200 can access gNB100 (NG-RAN20) and can support CA and DC.
- the RRC processing unit 220 executes various processes in the radio resource control layer (RRC). Specifically, the RRC processing unit 220 can transmit and receive radio resource control layer messages.
- RRC radio resource control layer
- the RRC processing unit 220 can receive RRC Reconfiguration from the network, specifically from the NG-RAN 20. Also, the RRC processing unit 220 can transmit RRC Reconfiguration Complete, which is a response to RRC Reconfiguration, to the network.
- the RRC processing unit 220 can receive RRC Reconfiguration including CellGroupConfig.
- the information element (IE) of CellGroupConfig includes the same cell group, specifically, SCellIndex (secondary cell identifier) that uniquely identifies the SCell and servCellIndex (serving cell identifier) that uniquely identifies the serving cell in the SCG. ) may be included.
- the RRC processing unit 220 receives CellGroupConfig (configuration information) including SCellIndex assigned to SCells and servCellIndex assigned to PSCells that are PCells in a plurality of SCells included in the same cell group. may constitute a part.
- CellGroupConfig configuration information
- SCellIndex assigned to SCells
- servCellIndex assigned to PSCells that are PCells in a plurality of SCells included in the same cell group. may constitute a part.
- the CA processing unit 230 executes processing related to carrier aggregation (CA) and dual connectivity (DC).
- CA carrier aggregation
- DC dual connectivity
- the CA processing unit 230 performs configuration related to multiple component carriers (CC), cells (PCell/PSCell/SCell), and cell groups in order to support CA (and/or DC). good.
- CC component carriers
- PCell/PSCell/SCell PCell/PSCell/SCell
- cell groups in order to support CA (and/or DC). good.
- the CA processing unit 230 can multiplex the uplink control information (UCI) to PUCCH or PUSCH.
- UCI uplink control information
- CA processing section 230 when a plurality of SCells are configured during CA (and/or DC), can be transmitted via any SCell.
- the UCI may be multiplexed on the PUSCH (hereinafter abbreviated as SCell PUSCH as appropriate).
- the CA processing unit 230 may multiplex the UCI to any one of the plurality of PUSCHs under the control of the control unit 240.
- the control unit 240 controls each functional block that configures the UE200.
- the control unit 240 can control transmission of uplink control information (UCI).
- UCI uplink control information
- control unit 240 can determine the cells in which the UCI should be multiplexed, specifically the uplink channels of the cells, based on the cell identification information during CA (and/or DC). More specifically, the control unit 240 can determine the PUSCH of the SCell on which the UCI should be multiplexed, based on the SCellIndex assigned to the SCell and the serving cell, especially the servCellIndex assigned to the PSCell.
- control section 240 may multiplex the UCI to the PUSCH of the serving cell to which the smallest servCellIndex value is assigned, but the servCellIndex assigned to the PSCell and the SCellIndex assigned to the SCell may overlap. .
- control section 240 may multiplex UCI to PUSCH transmitted via PSCell.
- overlapping SCellIndex and servCellIndex may be interpreted as assigning the same number when numerical values such as natural numbers are used as described above.
- part of SCellIndex is the same as part of servCellIndex, it may be interpreted that SCellIndex and servCellIndex overlap.
- control unit 240 may multiplex UCI by giving priority to PUSCH transmitted via PSCell over SCell to which SCellIndex that overlaps with servCellIndex is assigned. Specifically, when SCellIndex and servCellIndex overlap, control section 240 may preferentially use the PUSCH of the PSCell over the PUSCH of the relevant SCell for multiplexing the UCI. In this case, the transmission of UCI by the PUSCH of the SCell is not excluded, and it may include a state in which many UCIs are multiplexed by the PUSCH of the PSCell.
- the UCI reporting procedure (3GPP TS38.213 Chapter 9) specifies that UCI is multiplexed with PUSCH transmitted via the serving cell to which the smallest servCellIndex value is assigned.
- SCell When CA is executed, that is, when UE 200 configures SCG, SCell may be configured by SCellIndex. Also, PSCell may be set by servCellIndex. Specifically, as described above, servCellIndex may be set by SpCellConfig included in the IE of CellGroupConfig, and SCellIndex may be set by SCellConfig (see 3GPP TS38.331 Section 6.3.2).
- the SCellIndex assigned to the SCell is also applied to the SCell's servCellIndex.
- the servCellIndex IE is related to a short identifier (ID) used to identify the serving cell (PCell, PSCell or SCell), a value of 0 applies to PCell and the previously assigned SCellIndex applies to SCell. obtain.
- the UE 200 multiplexes the UCI to the PUSCH of the serving cell having the smallest value of servCellIndex, but either the PSCell or the SCell. cannot determine whether UCI should be multiplexed on PUSCH of
- FIG. 4 shows an example where the SCellIndex assigned to the SCell and the servCellIndex assigned to the PSCell overlap.
- Example 1 PSCell's servCellIndex(1) overlaps with SCell's SCellIndex(1) (boxed numbers). Note that multiple SCells may be configured, and different SCellIndex may be assigned to each. In this case, the UE 200 cannot determine which of the PUSCH of the PSCell or the SCell of SCellIndex (1) should be multiplexed with the UCI.
- PSCell's servCellIndex (3) overlaps with SCell's SCellIndex (3) (boxed numbers).
- SCellIndex (3) boxed numbers.
- FIG. 5 shows an example of a communication sequence between the UE 200 and the network according to Operation Example 1.
- the network (gNB 100) assigns a different value (number) to the servCellIndex assigned to the PSCell from the SCellIndex assigned to the SCell in the same cell group. That is, within the same cell group (specifically, SCG), the servCellIndex assigned to a PSCell and the SCellIndex assigned to an SCell must not overlap.
- 3GPP TS38.331 servCellIndex may be defined as follows.
- the IE ServCellIndex concerns a short identity, used to identify a serving cell (ie the PCell, the PSCell or an SCell). Value 0 applies for the PCell, while the SCellIndex that has previously been assigned applies for SCells. For servCellIndex of PSCell , the value shall be assigned other than SCellIndex used for SCells within SCG.” Thus, for the servCellIndex of a PSCell, a value other than the SCellIndex used for SCells within the SCG may be assigned.
- the network sets the servCellIndex assigned to the PSCell (step 1). For example, the network sets the servCellIndex assigned to the PSCell to '1'.
- the network sets the SCellIndex assigned to the SCell (step 2). For example, the network sets the SCellIndex assigned to the SCell to '2'. If there are multiple SCells, similar processing may be repeated, but values other than "1" and "2" are assigned. Also, the order of operations in steps 1 and 2 may be interchanged.
- the network sends an RRC message including the set servCellIndex and SCellIndex to UE 200 (step 3). Specifically, the network may transmit RRC Reconfiguration including CellGroupConfig, and CellGroupConfig may include the configured servCellIndex and SCellIndex.
- the UE 200 selects a PUSCH to multiplex the UCI, and multiplexes the UCI on the selected PUSCH (step 4).
- the UE 200 may multiplex the UCI to the serving cell assigned the smallest value of servCellIndex (1), specifically the PUSCH of the PSCell.
- FIG. 6 shows a multiple operation flow of UCI to PUSCH in UE 200 according to operation example 2.
- the UE 200 can multiplex the UCI to the PUSCH of the cell with the smallest servCellIndex value (the smallest servCellIndex cell) in the same cell group.
- the UE 200 may multiplex the UCI to the PUSCH of the PSCell or preferentially multiplex it to the PUSCH of the PSCell.
- UE 200 receives RRC Reconfiguration including CellGroupConfig (step 10).
- CellGroupConfig may include servCellIndex assigned to PSCell and SCellIndex assigned to SCell.
- the UE 200 determines whether or not the servCellIndex of the PSCell overlaps with the SCellIndex of the SCell (step 20). For example, when the servCellIndex of a PSCell is "3" and the SCellIndex of one of the SCells is "3" (see example 2 in FIG. 4), it may be determined that the servCellIndex of the PSCell overlaps with the SCellIndex of the SCell.
- the UE 200 may decide to multiplex the UCI to the PSCell's PUSCH (step 30).
- the UE 200 transmits the PUSCH of the PSCell multiplexed with the UCI (step 40). Note that the UE 200 may multiplex all UCIs onto the PUSCH of the PSCell, or may preferentially use the PUSCH of the PSCell and multiplex the UCI onto the PUSCH of the SCell.
- the network can set different values for SCellIndex assigned to SCells and servCellIndex assigned to PSCells that are primary cells in multiple SCells included in the same cell group.
- the UE 200 may multiplex or preferentially multiplex the UCI to the PUSCH transmitted via the PSCell.
- multiplexing of UCI to appropriate PUSCH can be realized. That is, at the time of NR CA (and/or DC), when multiplexing UCI to PUSCH on the cell with the smallest servCellIndex value (the smallest servCellIndex cell), UE200 can distinguish between PSCell and SCell, and UE200 can solve the problem that can not determine the multiple destination of UCI.
- SCellIndex and servCellIndex are included in CellGroupConfig, but at least one of SCellIndex and servCellIndex may be included in another IE or the like.
- configure, activate, update, indicate, enable, specify, and select may be read interchangeably. good.
- link, associate, correspond, and map may be read interchangeably to allocate, assign, monitor. , map, may also be read interchangeably.
- each functional block may be implemented using one device physically or logically coupled, or directly or indirectly using two or more physically or logically separate devices (e.g. , wired, wireless, etc.) and may be implemented using these multiple devices.
- a functional block may be implemented by combining software in the one device or the plurality of devices.
- Functions include judging, determining, determining, calculating, calculating, processing, deriving, investigating, searching, checking, receiving, transmitting, outputting, accessing, resolving, selecting, choosing, establishing, comparing, assuming, expecting, assuming, Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc. can't
- a functional block (component) that performs transmission is called a transmitting unit or transmitter.
- the implementation method is not particularly limited.
- FIG. 7 is a diagram showing an example of the hardware configuration of the device.
- the device may be configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.
- the term "apparatus” can be read as a circuit, device, unit, or the like.
- the hardware configuration of the device may be configured to include one or more of each device shown in the figure, or may be configured without some of the devices.
- Each functional block of the device (see FIGS. 2 and 3) is realized by any hardware element of the computer device or a combination of the hardware elements.
- each function of the device is implemented by causing the processor 1001 to perform calculations, controlling communication by the communication device 1004, and controlling the It is realized by controlling at least one of data reading and writing in 1002 and storage 1003 .
- a processor 1001 operates an operating system and controls the entire computer.
- the processor 1001 may be configured by a central processing unit (CPU) including interfaces with peripheral devices, a control unit, an arithmetic unit, registers, and the like.
- CPU central processing unit
- the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes according to them.
- programs program codes
- software modules software modules
- data etc.
- the various processes described above may be executed by one processor 1001, or may be executed by two or more processors 1001 simultaneously or sequentially.
- Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via an electric communication line.
- the memory 1002 is a computer-readable recording medium, and is composed of at least one of Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), Random Access Memory (RAM), etc. may be
- ROM Read Only Memory
- EPROM Erasable Programmable ROM
- EEPROM Electrically Erasable Programmable ROM
- RAM Random Access Memory
- the memory 1002 may also be called a register, cache, main memory (main storage device), or the like.
- the memory 1002 can store programs (program code), software modules, etc. capable of executing a method according to an embodiment of the present disclosure.
- the storage 1003 is a computer-readable recording medium, for example, an optical disc such as a Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disc, a magneto-optical disc (for example, a compact disc, a digital versatile disc, a Blu-ray disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, and/or the like.
- Storage 1003 may also be referred to as an auxiliary storage device.
- the recording medium described above may be, for example, a database, server, or other suitable medium including at least one of memory 1002 and storage 1003 .
- the communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, or the like.
- the communication device 1004 includes a high-frequency switch, duplexer, filter, frequency synthesizer, etc., for realizing at least one of frequency division duplex (FDD) and time division duplex (TDD).
- FDD frequency division duplex
- TDD time division duplex
- the input device 1005 is an input device (for example, keyboard, mouse, microphone, switch, button, sensor, etc.) that receives input from the outside.
- the output device 1006 is an output device (eg, display, speaker, LED lamp, etc.) that outputs to the outside. Note that 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 using a single bus, or may be configured using different buses between devices.
- the device includes hardware such as a microprocessor, digital signal processor (DSP), application specific integrated circuit (ASIC), programmable logic device (PLD), field programmable gate array (FPGA), etc.
- DSP digital signal processor
- ASIC application specific integrated circuit
- PLD programmable logic device
- FPGA field programmable gate array
- notification of information is not limited to the aspects/embodiments described in the present disclosure, and may be performed using other methods.
- the notification of information may include physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI), higher layer signaling (e.g., RRC signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), other signals, or combinations thereof, and RRC signaling may also be referred to as RRC messages, e.g., RRC Connection Setup ) message, RRC Connection Reconfiguration message, or the like.
- DCI Downlink Control Information
- UCI Uplink Control Information
- RRC signaling e.g., RRC signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), other signals, or combinations thereof
- RRC signaling may also be referred to as RRC messages, e.g., RRC Connection Setup ) message, R
- LTE Long Term Evolution
- LTE-A LTE-Advanced
- SUPER 3G IMT-Advanced
- 4G 4th generation mobile communication system
- 5G 5th generation mobile communication system
- Future Radio Access FAA
- New Radio NR
- W-CDMA registered trademark
- GSM registered trademark
- CDMA2000 Code Division Multiple Access 2000
- UMB Ultra Mobile Broadband
- IEEE 802.11 Wi-Fi (registered trademark)
- IEEE 802.16 WiMAX®
- IEEE 802.20 Ultra-WideBand (UWB), Bluetooth®, other suitable systems, and/or next-generation systems enhanced therefrom.
- a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).
- a specific operation that is performed by a base station in the present disclosure may be performed by its upper node in some cases.
- various operations performed for communication with a terminal may be performed by the base station and other network nodes other than the base station (e.g. MME or S-GW, etc., but not limited to).
- MME or S-GW network nodes
- the case where there is one network node other than the base station is exemplified above, it may be a combination of a plurality of other network nodes (for example, MME and S-GW).
- Information, signals can be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). It may be input and output via multiple network nodes.
- Input/output information may be stored in a specific location (for example, memory) or managed using a management table. Input and output information may be overwritten, updated, or appended. The output information may be deleted. The entered information may be transmitted to other devices.
- the determination may be made by a value represented by one bit (0 or 1), by a true/false value (Boolean: true or false), or by numerical comparison (for example, a predetermined value).
- notification of predetermined information is not limited to being performed explicitly, but may be performed implicitly (for example, not notifying the predetermined information). good too.
- Software whether referred to as software, firmware, middleware, microcode, hardware description language or otherwise, includes instructions, instruction sets, code, code segments, program code, programs, subprograms, and software modules. , applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and the like.
- software, instructions, information, etc. may be transmitted and received via a transmission medium.
- the Software uses wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) to access websites, Wired and/or wireless technologies are included within the definition of transmission medium when sent from a server or other remote source.
- 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. may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. may be represented by a combination of
- the channel and/or symbols may be signaling.
- a signal may also be a message.
- a component carrier may also be called a carrier frequency, a cell, a frequency carrier, or the like.
- system and “network” used in this disclosure are used interchangeably.
- information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values from a predetermined value, or may be expressed using other corresponding information.
- radio resources may be indexed.
- base station BS
- radio base station fixed station
- NodeB NodeB
- eNodeB eNodeB
- gNodeB gNodeB
- a base station may also be referred to by terms such as macrocell, small cell, femtocell, picocell, and the like.
- a base station can accommodate one or more (eg, three) cells (also called sectors). When a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, each smaller area corresponding to a base station subsystem (e.g., a small indoor base station (Remote Radio)). Head: RRH) can also provide communication services.
- a base station subsystem e.g., a small indoor base station (Remote Radio)
- Head: RRH can also provide communication services.
- cell refers to part or all of the coverage area of at least one of a base station and base station subsystem that provides communication services in this coverage.
- MS Mobile Station
- UE User Equipment
- a mobile station is defined by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless It may also be called a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
- At least one of the base station and 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 a mobile object, the mobile object itself, or the like.
- the mobile body may be a vehicle (e.g., car, airplane, etc.), an unmanned mobile body (e.g., drone, self-driving car, etc.), or a robot (manned or unmanned ).
- at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations.
- at least one of the base station and 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).
- communication between a base station and a mobile station is replaced with communication between multiple mobile stations (for example, Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.)
- D2D Device-to-Device
- V2X Vehicle-to-Everything
- each aspect/embodiment of the present disclosure may be applied.
- the mobile station may have the functions that the base station has.
- words such as "up” and “down” may be replaced with words corresponding to inter-terminal communication (for example, "side”).
- uplink channel, downlink channel, etc. may be read as side channel (or side link).
- a radio frame may consist 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 consist of one or more slots in the time domain. A subframe may be a fixed time length (eg, 1 ms) independent of numerology.
- a numerology may be a communication parameter that applies to the transmission and/or reception of a signal or channel. Numerology, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, transmission and reception specific filtering operations performed by the receiver in the frequency domain, specific windowing operations performed by the transceiver in the time domain, and/or the like.
- SCS subcarrier spacing
- TTI transmission time interval
- number of symbols per TTI radio frame structure
- transmission and reception specific filtering operations performed by the receiver in the frequency domain specific windowing operations performed by the transceiver in the time domain, and/or the like.
- a slot may consist of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain.
- OFDM Orthogonal Frequency Division Multiplexing
- SC-FDMA Single Carrier Frequency Division Multiple Access
- a slot may be a unit of time based on numerology.
- a slot may contain multiple mini-slots. Each minislot may consist of one or more symbols in the time domain. A minislot may also be referred to as a subslot. A minislot may consist of fewer symbols than a slot.
- a PDSCH (or PUSCH) that is transmitted in time units larger than a minislot may be referred to as PDSCH (or PUSCH) mapping type A.
- PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.
- Radio frames, subframes, slots, minislots and symbols all represent time units when transmitting signals. Radio frames, subframes, slots, minislots and symbols may be referred to by other corresponding designations.
- one subframe may be called a transmission time interval (TTI)
- TTI transmission time interval
- multiple consecutive subframes may be called a TTI
- one slot or one minislot may be called a TTI. That is, at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, may be a period shorter than 1ms (eg, 1-13 symbols), or a period longer than 1ms may be Note that the unit representing the TTI may be called a slot, minislot, or the like instead of a subframe.
- TTI refers to, for example, the minimum scheduling time unit in wireless communication.
- a base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each user terminal) to each user terminal on a TTI basis.
- radio resources frequency bandwidth, transmission power, etc. that can be used by each user terminal
- the TTI may be a transmission time unit for channel-encoded data packets (transport blocks), code blocks, codewords, etc., or may be a processing unit for scheduling, link adaptation, etc. Note that when a TTI is given, the time interval (for example, the number of symbols) in which transport blocks, code blocks, codewords, etc. are actually mapped may be shorter than the TTI.
- one slot or one minislot is called a TTI
- one or more TTIs may be the minimum scheduling time unit.
- the number of slots (the number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
- a TTI with a time length of 1 ms may be called a normal TTI (TTI in LTE Rel.8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc.
- TTI that is shorter than a regular TTI may also be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a slot, and so on.
- long TTI for example, normal TTI, subframe, etc.
- short TTI for example, shortened TTI, etc.
- a TTI having a TTI length greater than or equal to this value may be read as a replacement.
- a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain.
- the number of subcarriers included in an RB may be the same regardless of neurology, and may be 12, for example.
- the number of subcarriers included in an RB may be determined based on neumerology.
- the time domain of an RB may include one or more symbols and may be 1 slot, 1 minislot, 1 subframe, or 1 TTI long.
- One TTI, one subframe, etc. may each consist of one or more resource blocks.
- One or more RBs are physical resource blocks (Physical RB: PRB), sub-carrier groups (SCG), resource element groups (REG), PRB pairs, RB pairs, etc. may be called.
- PRB Physical resource blocks
- SCG sub-carrier groups
- REG resource element groups
- PRB pairs RB pairs, etc.
- a resource block may be composed of one or more resource elements (Resource Element: RE).
- RE resource elements
- 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
- a Bandwidth Part (which may also be called a Bandwidth Part) represents a subset of contiguous common resource blocks (RBs) for a neumerology in a carrier. good.
- the common RB may be identified by an RB index based on the common reference point of the carrier.
- PRBs may be defined in a BWP and numbered within that BWP.
- BWP may include BWP for UL (UL BWP) and BWP for DL (DL BWP).
- BWP may include BWP for UL (UL BWP) and BWP for DL (DL BWP).
- One or more BWPs may be configured in one carrier for a UE.
- At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal/channel outside the active BWP.
- BWP bitmap
- radio frames, subframes, slots, minislots and symbols described above are only examples.
- the number of subframes included in a radio frame the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of Configurations such as the number of subcarriers and the number of symbols in a TTI, symbol length, cyclic prefix (CP) length, etc.
- CP cyclic prefix
- connection means any direct or indirect connection or coupling between two or more elements, It can include the presence of one or more intermediate elements between two elements being “connected” or “coupled.” Couplings or connections between elements may be physical, logical, or a combination thereof. For example, “connection” may be read as "access”.
- two elements are defined using at least one of one or more wires, cables and printed electrical connections and, as some non-limiting and non-exhaustive examples, in the radio frequency domain. , electromagnetic energy having wavelengths in the microwave and light (both visible and invisible) regions, and the like.
- the reference signal can also be abbreviated as Reference Signal (RS), and may also be called Pilot depending on the applicable standard.
- RS Reference Signal
- any reference to elements using the "first,” “second,” etc. designations 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 method of distinguishing between two or more elements. Thus, references to first and second elements do not imply that only two elements may be employed therein or that the first element must precede the second element in any way.
- determining and “determining” used in this disclosure may encompass a wide variety of actions.
- “Judgement” and “determination” are, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (eg, lookup in a table, database, or other data structure), ascertaining as “judged” or “determined”, and the like.
- "judgment” and “determination” are used for receiving (e.g., receiving information), transmitting (e.g., transmitting information), input, output, access (accessing) (for example, accessing data in memory) may include deeming that a "judgment” or “decision” has been made.
- judgment and “decision” are considered to be “judgment” and “decision” by resolving, selecting, choosing, establishing, comparing, etc. can contain.
- judgment and “decision” can include considering that some action is “judgment” and “decision”.
- judgment (decision) may be read as “assuming”, “expecting”, “considering”, or the like.
- a and B are different may mean “A and B are different from each other.”
- the term may also mean that "A and B are different from C”.
- Terms such as “separate,” “coupled,” etc. may also be interpreted in the same manner as “different.”
- Radio communication system 20 NG RAN 100 gNB 110 radio communication unit 120 RRC processing unit 130 CA processing unit 140 control unit 200 UE 210 wireless communication unit 220 RRC processing unit 230 CA processing unit 240 control unit 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、及び端末200(User Equipment 200、以下、UE200)を含む。
NG-RAN20は、無線基地局100(以下、gNB100)を含む。なお、gNB及びUEの数を含む無線通信システム10の具体的な構成は、図1に示した例に限定されない。
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、gNB100及びUE200の機能ブロック構成について説明する。
図2は、gNB100の機能ブロック構成図である。図2に示すように、gNB100は、無線通信部110、RRC処理部120、CA処理部130及び制御部140を備える。
図3は、UE200の機能ブロック構成図である。図3に示すように、UE200は、無線通信部210、RRC処理部220、CA処理部230及び制御部240を備える。
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、CA(及び/またはDC、以下同)時におけるセルの識別情報の設定、及び当該識別情報に基づく上りリンク制御情報(UCI)のPUSCHへの多重に関する動作について説明する。
UCIの報告手順(3GPP TS38.213 9章)では、最も小さい値のservCellIndexが割り当てられたサービングセルを介して送信されるPUSCHにUCIを多重することが規定されている。
本動作例では、ネットワーク側において、PSCellに割り当てられたservCellIndexと、SCellに割り当てられたSCellIndexとの重複を回避する動作について説明する。
このように、PSCellのservCellIndexの場合、SCG内のSCellに使用されるSCellIndex以外の値が割り当てられてよい。
本動作例では、PSCellに割り当てられたservCellIndexと、SCellに割り当てられたSCellIndexとが重複する場合におけるUE200でのUCIのPUSCHへの多重動作について説明する。
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、ネットワーク(gNB100)は、SCellに割り当てるSCellIndexと、同一セルグループに含まれる複数のSCell内のプライマリーセルであるPSCellに割り当てるservCellIndexとを異なる値に設定できる。
以上、実施形態について説明したが、当該実施形態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。
無線フレームは時間領域において1つまたは複数のフレームによって構成されてもよい。時間領域において1つまたは複数の各フレームはサブフレームと呼ばれてもよい。サブフレームはさらに時間領域において1つまたは複数のスロットによって構成されてもよい。サブフレームは、ニューメロロジー(numerology)に依存しない固定の時間長(例えば、1ms)であってもよい。
20 NG RAN
100 gNB
110 無線通信部
120 RRC処理部
130 CA処理部
140 制御部
200 UE
210 無線通信部
220 RRC処理部
230 CA処理部
240 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 (4)
- セカンダリーセルに割り当てるセカンダリーセル識別子と、同一セルグループに含まれる複数の前記セカンダリーセル内のプライマリーセルであるプライマリー・セカンダリーセルに割り当てるサービングセル識別子とを異なる値に設定する制御部と、
前記セカンダリーセル識別子及び前記サービングセル識別子を含む設定情報を端末に送信する送信部と
を備える無線基地局。 - 前記セカンダリーセル識別子は、前記セカンダリーセルのサービングセル識別子にも適用される請求項1に記載の無線基地局。
- セカンダリーセルに割り当てられたセカンダリーセル識別子、及び同一セルグループに含まれる複数の前記セカンダリーセル内のプライマリーセルであるプライマリー・セカンダリーセルに割り当てられたサービングセル識別子を含む設定情報を受信する受信部と、
前記セカンダリーセル識別子と前記サービングセル識別子とが重複する場合、前記プライマリー・セカンダリーセルを介して送信される物理上りリンク共有チャネルに上りリンク制御情報を多重する制御部と
を備える端末。 - 前記制御部は、前記サービングセル識別子と重複した前記セカンダリーセル識別子が割り当てられた前記セカンダリーセルよりも、前記プライマリー・セカンダリーセルを介して送信される前記物理上りリンク共有チャネルを優先して前記上りリンク制御情報を多重する請求項3に記載の端末。
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EP21934979.2A EP4319380A1 (en) | 2021-03-31 | 2021-03-31 | Wireless base station and user equipment |
US18/284,434 US20240172054A1 (en) | 2021-03-31 | 2021-03-31 | Radio base station and terminal |
BR112023019728A BR112023019728A2 (pt) | 2021-03-31 | 2021-03-31 | Estação rádio base, método e sistema de radiocomunicação |
JP2023510089A JPWO2022208817A1 (ja) | 2021-03-31 | 2021-03-31 | |
PCT/JP2021/014058 WO2022208817A1 (ja) | 2021-03-31 | 2021-03-31 | 無線基地局及び端末 |
CN202180096057.4A CN117063565A (zh) | 2021-03-31 | 2021-03-31 | 无线基站以及终端 |
CONC2023/0014468A CO2023014468A2 (es) | 2021-03-31 | 2023-10-26 | Estación base inalámbrica y equipo de usuario |
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2023
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Non-Patent Citations (6)
Title |
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"3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Radio Resource Control (RRC) protocol specification (Release 15)", 3GPP STANDARD; TECHNICAL SPECIFICATION; 3GPP TS 38.331, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. V15.12.0, 6 January 2021 (2021-01-06), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , pages 1 - 541, XP051999703 * |
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3GPP: "3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Radio Resource Control (RRC) protocol specification (Release 15", 3GPP TS 38.331, December 2020 (2020-12-01) |
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NTTDOCOMO, INC.: "Clarification on SCellIndex and ServCellIndex", 3GPP DRAFT; R2-2103752, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Electronic meeting; 20210412 - 20210420, 2 April 2021 (2021-04-02), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052175138 * |
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BR112023019728A2 (pt) | 2023-10-31 |
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US20240172054A1 (en) | 2024-05-23 |
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