WO2019175989A1 - ユーザ端末及び無線通信方法 - Google Patents
ユーザ端末及び無線通信方法 Download PDFInfo
- Publication number
- WO2019175989A1 WO2019175989A1 PCT/JP2018/009812 JP2018009812W WO2019175989A1 WO 2019175989 A1 WO2019175989 A1 WO 2019175989A1 JP 2018009812 W JP2018009812 W JP 2018009812W WO 2019175989 A1 WO2019175989 A1 WO 2019175989A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- information
- unit
- signal
- user terminal
- control
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]
Definitions
- the present disclosure relates to a user terminal and a wireless communication method in a next generation mobile communication system.
- LTE Long Term Evolution
- Non-patent Document 1 LTE Advanced, LTE Rel. 10, 11, 12, 13
- LTE Rel. 8, 9 LTE Advanced, LTE Rel. 10, 11, 12, 13
- LTE successor systems for example, FRA (Future Radio Access), 5G (5th generation mobile communication system), 5G + (plus), NR (New Radio), NX (New radio access), FX (Future generation radio access), LTE Also referred to as Rel.
- a radio base station for example, eNB (eNode B)
- eNB eNode B
- a physical layer control signal for example, downlink control information (DCI: Downlink Control Information)
- DCI Downlink Control Information
- UE User Equipment
- a control channel for example, PDCCH (Physical Downlink Control Channel)
- control resource set (CORESET: CONtrol REsource SET) that is a candidate area for control channel allocation (monitor) ( Alternatively, it has been studied to detect DCI by searching.
- the CORESET configuration information is set to user terminal (UE) -specific configuration information (for example, UE-specific PDCCH configuration information (UE-specific PDCCH configuration information). It is also considered to be included in the PDCCH-Config etc.)) and to notify the user terminal.
- UE user terminal
- the present invention has been made in view of such a point, and an object of the present invention is to provide a user terminal and a wireless communication method in which a user terminal can appropriately set CORESET.
- a user terminal includes a receiving unit that receives setting information of a control resource set included in common setting information used for setting a cell-specific downlink control channel parameter, and based on the setting information
- a control unit for controlling the setting of the control resource set It is characterized by comprising.
- the user terminal can appropriately set CORESET.
- FIG. 1 is a diagram illustrating an example of CORESET setting information.
- FIG. 2 is a diagram showing an example of PDCCH-ConfigCommon according to the present embodiment.
- FIG. 3 is a diagram showing an example of a schematic configuration of the radio communication system according to the present embodiment.
- FIG. 4 is a diagram illustrating an example of the overall configuration of the radio base station according to the present embodiment.
- FIG. 5 is a diagram illustrating an example of a functional configuration of the radio base station according to the present embodiment.
- FIG. 6 is a diagram showing an example of the overall configuration of the user terminal according to the present embodiment.
- FIG. 7 is a diagram illustrating an example of a functional configuration of the user terminal according to the present embodiment.
- FIG. 8 is a diagram illustrating an example of the hardware configuration of the radio base station and the user terminal according to the present embodiment.
- wireless base stations for example, BS.
- DCI downlink control information
- BS wireless base stations
- TRP Transmission / Reception Point
- eNB eNodeB
- gNB NR NodeB
- CORESET COntrol REsource SET
- the CORESET is an allocation candidate area of a control channel (for example, PDCCH (Physical Downlink Control Channel)).
- the CORESET may include a predetermined frequency domain resource and a time domain resource (for example, 1 or 2 OFDM symbols).
- PDCCH or DCI is mapped to a predetermined resource unit in CORESET.
- the predetermined resource unit includes, for example, a control channel element (CCE: Control Channel Element), a CCE group including one or more CCEs, and a resource element group (REG: Resource Element) including one or more resource elements (RE: Resource Element). Group), one or more REG bundles (REG group), and at least one physical resource block (PRB).
- CCE Control Channel Element
- CCE group including one or more CCEs
- REG Resource Element
- Group resource elements
- REG group Resource Element
- PRB physical resource block
- the user terminal monitors (blind decoding) DCI mapped to a predetermined resource unit in CORESET (or search space in CORESET), and detects DCI for the user terminal.
- the user terminal is notified of CORESET configuration information (which may be referred to as CORESET setting information, CORESET-config, ControlResourceSet information element (IE), ControlResourceSet, etc.) from the radio base station.
- CORESET configuration information which may be referred to as CORESET setting information, CORESET-config, ControlResourceSet information element (IE), ControlResourceSet, etc.
- the user terminal sets one or more CORESETs based on the CORESET setting information.
- the CORESET setting information may be used for setting at least one of the time domain and the frequency domain (time / frequency domain) of CORESET for searching DCI.
- FIG. 1 is a diagram illustrating an example of CORESET setting information.
- the CORESET setting information may include, for example, at least one of the following information (parameters).
- CORESET identifier ControlResourceSetId.
- CORESET frequency resources (frequencyDomainResources).
- CORESET time resource (duration). For example, the period may be composed of one or more symbols.
- the type of mapping between CCE and REG (CCE-REG mapping type (cce-REG-MappingType)).
- the CCE-REG mapping type may indicate interleaved or non-interleaved.
- REG bundle size (reg-BundleSize, CORESET-REG-bundle-size)
- CORESET interleaver size (interleaverSize, CORESET-interleaver-size)
- -Index of shift amount in the case of interleaving shift index, shiftIndex, CORESET-shift-index.
- Precoder granularity in the frequency domain precoderGranularity, CORESET-precoder-granuality). The granularity is specified for the same or all resource blocks as the size of the REG bundle.
- the state of the transmission configuration identifier (TCI) for PDCCH (TCI state).
- the TCI state may indicate (may include) information related to PDCCH pseudo-collocation (QCL) (also referred to as QCL information or QCL information for PDCCH).
- QCL information for the PDCCH is, for example, information on the QCL between the PDCCH (or the DMRS port for the PDCCH) and the downlink reference signal (DL-RS) in the CORESET, for example, a DL-RS that has a QCL relationship Information (DL-RS related information) and information indicating the QCL type (QCL type information) may be included.
- DL-RS related information information on the QCL between the PDCCH (or the DMRS port for the PDCCH) and the downlink reference signal (DL-RS) in the CORESET, for example, a DL-RS that has a QCL relationship Information (DL-RS related information) and information indicating the QCL type (QCL type information) may be included.
- DL-RS related information information indicating the QCL type
- QCL type information information indicating the
- the radio base station uses the CORESET setting information as setting information specific to the user terminal (UE) (for example, setting information used for setting UE-specific PDCCH parameters (also referred to as UE-specific PDCCH setting information or PDCCH-Config)). ) To notify the user terminal.
- the PDCCH-Config may be notified to the user terminal by higher layer signaling, for example.
- the user terminal may not properly detect DCI mapped in the CORESET during a predetermined procedure only by transmitting the CORESET configuration information included in the UE-specific PDCCH configuration information (PDCCH-Config). There is. Specifically, in at least one of the following procedures, DCI mapped in CORESET may not be detected properly.
- a handover for switching a radio base station to which a user terminal is connected.
- -Random access RA
- SCell Secondary Cell
- CA Carrier Aggregation
- SCell master cell group
- SCG secondary cell group of dual connectivity
- the DC may be, for example, EN-DC (E-UTRA NR Dual Connectivity with MCG using E-UTRA and SCG using NR), or may be DR of MCG and SCG using NR. Good. -Addition of primary secondary cell (PSCell) of DC SCG. ⁇ paging.
- EN-DC E-UTRA NR Dual Connectivity with MCG using E-UTRA and SCG using NR
- PSCell primary secondary cell
- the radio base station is configured to use cell-specific (that is, user terminal (UE) common) PDCCH parameter setting information (common setting information, UE common PDCCH setting). Transmission of information or PDCCH-ConfigCommon) is also under consideration.
- cell-specific that is, user terminal (UE) common
- PDCCH parameter setting information common setting information, UE common PDCCH setting.
- the present inventors include the above CORESET setting information in the PDCCH-ConfigCommon and notify the user terminal so that in a predetermined procedure (for example, the above-described HO, RA, CA, and DC (including EN-DC)). It was conceived that DCI mapped in CORESET can be appropriately detected even between SCell and / or PSCell).
- a predetermined procedure for example, the above-described HO, RA, CA, and DC (including EN-DC)
- the user terminal receives CORESET configuration information (control resource set configuration information) included in PDCCH-ConfigCommon (common configuration information used for setting a cell-specific downlink control channel parameter).
- CORESET configuration information control resource set configuration information
- PDCCH-ConfigCommon common configuration information used for setting a cell-specific downlink control channel parameter.
- the user terminal controls the setting of the CORESET (control resource set) based on the CORESET setting information.
- the user terminal may receive PDCCH-ConfigCommon including the CORESET setting information in the system information block (SIB, for example, SIB1). Further, the user terminal may receive PDCCH-ConfigCommon including the CORESET configuration information by higher layer signaling in at least one of a handover procedure, a secondary cell addition procedure, and a primary secondary cell addition procedure.
- SIB system information block
- FIG. 2 is a diagram showing an example of PDCCH-ConfigCommon according to the present embodiment.
- the PDCCH-ConfigCommon may include one or more CORESET setting information (ControlResourceSet) (for example, first and second COERSET setting information described later).
- Each CORESET setting information may include at least one information (parameter) described with reference to FIG.
- the first CORESET setting information included in PDCCH-ConfigCommon may be used for at least one reception procedure of SIB1, OSI, and paging.
- the user terminal may set CORESET based on the first CORESET setting information, and may receive at least one of SIB1, OSI, and paging based on DCI detected in the CORESET.
- the user terminal may receive at least one of SIB1, OSI, and paging using a downlink shared channel (PDSCH: Physical Downlink Shared Channel) scheduled by the DCI.
- PDSCH Physical Downlink Shared Channel
- the CORESET setting information for SIB1 (ControlResourceSetSIB1, SIB1-ControlResourceSet), the CORESET setting information for OSI (ControlResourceSetOtherSystemInformation, OtherSystemInformation-ControlResourceSet), and the CORESET setting information for paging (ControlResourceSetPagin, Paging) -ControlResourceSet) may be included.
- the second CORESET setting information included in PDCCH-ConfigCommon may be used for a random access procedure.
- the user terminal sets CORESET based on the second CORESET setting information, and is also referred to as a random access response (RAR: Random Access Response, message 2) based on DCI detected in the CORESET.
- RAR Random Access Response
- a message for contention resolution Contention Resolution message, also referred to as message 4
- the user terminal may receive at least one of the messages 2 and 4 using the PDSCH scheduled by the DCI.
- the second CORESET setting information may include CORE SET setting information (ControlResourceSetRandomAccess, ra-ControlResourceSet).
- PDCCH-ConfigCommon may include at least one of the following information (parameters).
- Search space for example, search space common to one or more user terminals
- search space setting information may be called search space setting information, CommonSearchSpace, SearchSpace, SearchSpace information element (IE), etc.
- IE SearchSpace information element
- the search space setting information will be described later.
- An identifier of a search space for DCI that schedules at least one of SIB1 and RMSI also referred to as a search space ID (Identifier), searchSpaceSIB1, SearchSpaceId, etc.
- An identifier of a search space for DCI that schedules other system information (for example, SIB2) (also referred to as a search space ID, searchSpace Other System Information, osi-Search Space, Search Space Id, etc.).
- a search space identifier for DCI that scales paging also referred to as search space ID, pagingSearchSpace, paging-SearchSpace, SearchSpaceId, etc.
- An identifier of a search space for DCI that scales at least one of the messages 2 and 4 in the random access procedure also referred to as a search space ID, RASearchSpace, ra-SearchSpace, SearchSpaceId, etc.).
- the PDCCH-ConfigCommon configured as described above may be included in the system information (for example, SIB1).
- SIB1 includes information common to user terminals that access the cell (for example, the location of the SSB within the SS (Synchronization Signal) burst set (ssb-PositionsisInBurst), the transmission cycle of the SSB (Synchronization Signal Block) , UL / DL configuration, etc. in TDD).
- the SSB is a block including a synchronization signal and / or a broadcast channel.
- PDCCH-ConfigCommon may be included in system information other than SIB (for example, MIB: Master Information Block, RMSI: Remaining Minimum System Information, OSI: Other System Information).
- SIB Master Information Block
- RMSI Remaining Minimum System Information
- OSI Other System Information
- wireless communication system Wireless communication system
- communication is performed using any one or a combination of the wireless communication methods according to the above-described embodiments of the present disclosure.
- FIG. 3 is a diagram illustrating an example of a schematic configuration of the wireless communication system according to the present embodiment.
- carrier aggregation (CA) and / or dual connectivity (DC) in which a plurality of basic frequency blocks (component carriers) each having a system bandwidth (for example, 20 MHz) of the LTE system as one unit are applied. can do.
- DC dual connectivity
- the wireless communication system 1 includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), LTE-B (LTE-Beyond), SUPER 3G, IMT-Advanced 4G (4th generation mobile communication system), 5G. (5th generation mobile communication system), NR (New Radio), FRA (Future Radio Access), New-RAT (Radio Access Technology), etc., or a system that realizes these.
- the radio communication system 1 includes a radio base station 11 that forms a macro cell C1 having a relatively wide coverage, and a radio base station 12 (12a-12c) that is arranged in the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. It is equipped with. Moreover, the user terminal 20 is arrange
- the user terminal 20 can be connected to both the radio base station 11 and the radio base station 12. It is assumed that the user terminal 20 uses the macro cell C1 and the small cell C2 at the same time using CA or DC. Moreover, the user terminal 20 may apply CA or DC using a plurality of cells (CC).
- CC a plurality of cells
- Communication between the user terminal 20 and the radio base station 11 can be performed using a carrier having a relatively low frequency band (for example, 2 GHz) and a narrow bandwidth (also referred to as an existing carrier or a legacy carrier).
- a carrier having a relatively high frequency band for example, 3.5 GHz, 5 GHz, etc.
- the same carrier may be used.
- the configuration of the frequency band used by each radio base station is not limited to this.
- the user terminal 20 can perform communication using time division duplex (TDD) and / or frequency division duplex (FDD) in each cell.
- TDD time division duplex
- FDD frequency division duplex
- a single neurology may be applied, or a plurality of different neurology may be applied.
- Numerology may be a communication parameter applied to transmission and / or reception of a certain signal and / or channel, for example, subcarrier interval, bandwidth, symbol length, cyclic prefix length, subframe length. , TTI length, number of symbols per TTI, radio frame configuration, specific filtering process performed by the transceiver in the frequency domain, specific windowing process performed by the transceiver in the time domain, and the like.
- subcarrier interval bandwidth, symbol length, cyclic prefix length, subframe length.
- TTI length number of symbols per TTI
- radio frame configuration specific filtering process performed by the transceiver in the frequency domain
- specific windowing process performed by the transceiver in the time domain and the like.
- the wireless base station 11 and the wireless base station 12 are connected by wire (for example, optical fiber compliant with CPRI (Common Public Radio Interface), X2 interface, etc.) or wirelessly. May be.
- the radio base station 11 and each radio base station 12 are connected to the higher station apparatus 30 and connected to the core network 40 via the higher station apparatus 30.
- the upper station device 30 includes, for example, an access gateway device, a radio network controller (RNC), a mobility management entity (MME), and the like, but is not limited thereto.
- RNC radio network controller
- MME mobility management entity
- Each radio base station 12 may be connected to the higher station apparatus 30 via the radio base station 11.
- the radio base station 11 is a radio base station having a relatively wide coverage, and may be called a macro base station, an aggregation node, an eNB (eNodeB), a transmission / reception point, or the like.
- the radio base station 12 is a radio base station having local coverage, and includes a small base station, a micro base station, a pico base station, a femto base station, a HeNB (Home eNodeB), an RRH (Remote Radio Head), and transmission / reception. It may be called a point.
- the radio base stations 11 and 12 are not distinguished, they are collectively referred to as a radio base station 10.
- Each user terminal 20 is a terminal that supports various communication schemes such as LTE and LTE-A, and may include not only a mobile communication terminal (mobile station) but also a fixed communication terminal (fixed station).
- orthogonal frequency division multiple access (OFDMA) is applied to the downlink, and single carrier-frequency division multiple access (SC-FDMA) is used for the uplink.
- SC-FDMA single carrier-frequency division multiple access
- Frequency Division Multiple Access and / or OFDMA is applied.
- OFDMA is a multi-carrier transmission scheme that performs communication by dividing a frequency band into a plurality of narrow frequency bands (subcarriers) and mapping data to each subcarrier.
- SC-FDMA is a single carrier transmission in which the system bandwidth is divided into bands each composed of one or continuous resource blocks for each terminal, and a plurality of terminals use different bands to reduce interference between terminals. It is a method.
- the uplink and downlink radio access schemes are not limited to these combinations, and other radio access schemes may be used.
- downlink channels include a downlink shared channel (PDSCH) shared by each user terminal 20, a broadcast channel (PBCH: Physical Broadcast Channel), a downlink L1 / L2 control channel, and the like. Used. User data, higher layer control information, SIB (System Information Block), etc. are transmitted by PDSCH. Moreover, MIB (Master Information Block) is transmitted by PBCH.
- PDSCH downlink shared channel
- PBCH Physical Broadcast Channel
- SIB System Information Block
- MIB Master Information Block
- Downlink L1 / L2 control channels include PDCCH (Physical Downlink Control Channel), EPDCCH (Enhanced Physical Downlink Control Channel), PCFICH (Physical Control Format Indicator Channel), PHICH (Physical Hybrid-ARQ Indicator Channel), and the like.
- Downlink control information (DCI: Downlink Control Information) including PDSCH and / or PUSCH scheduling information is transmitted by the PDCCH.
- scheduling information may be notified by DCI.
- DCI for scheduling DL data reception may be referred to as DL assignment
- DCI for scheduling UL data transmission may be referred to as UL grant.
- the number of OFDM symbols used for PDCCH is transmitted by PCFICH.
- the PHICH transmits HARQ (Hybrid Automatic Repeat reQuest) delivery confirmation information (for example, retransmission control information, HARQ-ACK, ACK / NACK, etc.) to the PUSCH.
- HARQ Hybrid Automatic Repeat reQuest
- EPDCCH is frequency-division multiplexed with PDSCH (downlink shared data channel), and is used for transmission of DCI and the like in the same manner as PDCCH.
- an uplink shared channel (PUSCH) shared by each user terminal 20
- an uplink control channel (PUCCH: Physical Uplink Control Channel)
- a random access channel (PRACH: Physical Random Access Channel)
- User data, higher layer control information, etc. are transmitted by PUSCH.
- downlink radio quality information CQI: Channel Quality Indicator
- delivery confirmation information SR
- scheduling request etc.
- a random access preamble for establishing connection with the cell is transmitted by the PRACH.
- a cell-specific reference signal CRS
- CSI-RS channel state information reference signal
- DMRS demodulation reference signal
- PRS Positioning Reference Signal
- a measurement reference signal SRS: Sounding Reference Signal
- a demodulation reference signal DMRS
- the DMRS may be referred to as a user terminal specific reference signal (UE-specific Reference Signal). Further, the transmitted reference signal is not limited to these.
- FIG. 4 is a diagram illustrating an example of the overall configuration of the radio base station according to the present embodiment.
- the radio base station 10 includes a plurality of transmission / reception antennas 101, an amplifier unit 102, a transmission / reception unit 103, a baseband signal processing unit 104, a call processing unit 105, and a transmission path interface 106.
- the transmission / reception antenna 101, the amplifier unit 102, and the transmission / reception unit 103 may each be configured to include one or more.
- User data transmitted from the radio base station 10 to the user terminal 20 via the downlink is input from the higher station apparatus 30 to the baseband signal processing unit 104 via the transmission path interface 106.
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- MAC Medium Access
- Retransmission control for example, HARQ transmission processing
- scheduling transmission format selection, channel coding, Inverse Fast Fourier Transform (IFFT) processing, precoding processing, and other transmission processing
- IFFT Inverse Fast Fourier Transform
- precoding processing precoding processing, and other transmission processing
- the downlink control signal is also subjected to transmission processing such as channel coding and inverse fast Fourier transform, and is transferred to the transmission / reception unit 103.
- the transmission / reception unit 103 converts the baseband signal output by precoding for each antenna from the baseband signal processing unit 104 to a radio frequency band and transmits the converted signal.
- the radio frequency signal frequency-converted by the transmission / reception unit 103 is amplified by the amplifier unit 102 and transmitted from the transmission / reception antenna 101.
- the transmission / reception unit 103 can be configured by a transmitter / receiver, a transmission / reception circuit, or a transmission / reception device described based on common recognition in the technical field according to the present disclosure.
- the transmission / reception part 103 may be comprised as an integral transmission / reception part, and may be comprised from a transmission part and a receiving part.
- the radio frequency signal received by the transmission / reception antenna 101 is amplified by the amplifier unit 102.
- the transmission / reception unit 103 receives the uplink signal amplified by the amplifier unit 102.
- the transmission / reception unit 103 converts the frequency of the received signal into a baseband signal and outputs it to the baseband signal processing unit 104.
- the baseband signal processing unit 104 performs fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT: Inverse Discrete Fourier Transform) processing, and error correction on user data included in the input upstream signal.
- FFT fast Fourier transform
- IDFT inverse discrete Fourier transform
- Decoding, MAC retransmission control reception processing, RLC layer and PDCP layer reception processing are performed and transferred to the upper station apparatus 30 via the transmission path interface 106.
- the call processor 105 performs communication channel call processing (setting, release, etc.), status management of the radio base station 10, radio resource management, and the like.
- the transmission path interface 106 transmits and receives signals to and from the higher station apparatus 30 via a predetermined interface.
- the transmission path interface 106 transmits / receives signals (backhaul signaling) to / from other radio base stations 10 via an interface between base stations (for example, an optical fiber compliant with CPRI (Common Public Radio Interface), X2 interface). May be.
- CPRI Common Public Radio Interface
- X2 interface May be.
- the transmission / reception unit 103 may transmit downlink control information (for example, DCI) using a control resource set (CORESET: CORN RESOURCE SET) associated with a specific search space.
- DCI downlink control information
- CORESET CORN RESOURCE SET
- the transmission / reception unit 103 may transmit control resource set setting information (CORESET setting information) included in the common setting information used for setting the cell-specific downlink control channel parameters.
- CORESET setting information included in the common setting information used for setting the cell-specific downlink control channel parameters.
- the transmission / reception unit 103 receives the common control information included in the system information block (SIB), or uses the common information by higher layer signaling in at least one of a handover procedure, a secondary cell addition procedure, and a primary secondary cell addition procedure. Setting information may be transmitted.
- SIB system information block
- FIG. 5 is a diagram illustrating an example of a functional configuration of the radio base station according to the embodiment of the present disclosure.
- the functional block of the characteristic part in this embodiment is mainly shown, and it may be assumed that the wireless base station 10 also has other functional blocks necessary for wireless communication.
- the baseband signal processing unit 104 includes at least a control unit (scheduler) 301, a transmission signal generation unit 302, a mapping unit 303, a reception signal processing unit 304, and a measurement unit 305. These configurations may be included in the radio base station 10, and a part or all of the configurations may not be included in the baseband signal processing unit 104.
- the control unit (scheduler) 301 controls the entire radio base station 10.
- the control unit 301 can be configured by a controller, a control circuit, or a control device described based on common recognition in the technical field according to the present disclosure.
- the control unit 301 controls, for example, signal generation in the transmission signal generation unit 302, signal allocation in the mapping unit 303, and the like.
- the control unit 301 also controls signal reception processing in the reception signal processing unit 304, signal measurement in the measurement unit 305, and the like.
- the control unit 301 schedules system information, downlink data signals (for example, signals transmitted by PDSCH), downlink control signals (for example, signals transmitted by PDCCH and / or EPDCCH, delivery confirmation information, etc.) (for example, resource Control). In addition, the control unit 301 controls generation of a downlink control signal, a downlink data signal, and the like based on a result of determining whether or not retransmission control is necessary for the uplink data signal.
- downlink data signals for example, signals transmitted by PDSCH
- downlink control signals for example, signals transmitted by PDCCH and / or EPDCCH, delivery confirmation information, etc.
- resource Control for example, resource Control
- the control unit 301 controls scheduling of synchronization signals (for example, PSS (Primary Synchronization Signal) / SSS (Secondary Synchronization Signal)), downlink reference signals (for example, CRS, CSI-RS, DMRS).
- synchronization signals for example, PSS (Primary Synchronization Signal) / SSS (Secondary Synchronization Signal)
- downlink reference signals for example, CRS, CSI-RS, DMRS.
- the control unit 301 includes an uplink data signal (for example, a signal transmitted by PUSCH), an uplink control signal (for example, a signal transmitted by PUCCH and / or PUSCH, delivery confirmation information, etc.), a random access preamble (for example, by PRACH). (Sending signal), scheduling of uplink reference signals and the like are controlled.
- an uplink data signal for example, a signal transmitted by PUSCH
- an uplink control signal for example, a signal transmitted by PUCCH and / or PUSCH, delivery confirmation information, etc.
- a random access preamble for example, by PRACH.
- the control unit 301 may perform control to transmit DCI using CORESET.
- the control unit 301 may perform control to generate and transmit DCI using a specific DCI format and an RNTI corresponding to the format in a specific search space.
- the transmission signal generation unit 302 generates a downlink signal (downlink control signal, downlink data signal, downlink reference signal, etc.) based on an instruction from the control unit 301, and outputs it to the mapping unit 303.
- the transmission signal generation unit 302 can be configured by a signal generator, a signal generation circuit, or a signal generation device described based on common recognition in the technical field according to the present disclosure.
- the transmission signal generation unit 302 generates, for example, a DL assignment for notifying downlink data allocation information and / or a UL grant for notifying uplink data allocation information based on an instruction from the control unit 301.
- the DL assignment and UL grant are both DCI and follow the DCI format.
- the downlink data signal is subjected to coding processing and modulation processing according to a coding rate, a modulation scheme, and the like determined based on channel state information (CSI: Channel State Information) from each user terminal 20.
- CSI Channel State Information
- the mapping unit 303 maps the downlink signal generated by the transmission signal generation unit 302 to a predetermined radio resource based on an instruction from the control unit 301, and outputs it to the transmission / reception unit 103.
- the mapping unit 303 can be configured by a mapper, a mapping circuit, or a mapping device described based on common recognition in the technical field according to the present disclosure.
- the reception signal processing unit 304 performs reception processing (for example, demapping, demodulation, decoding, etc.) on the reception signal input from the transmission / reception unit 103.
- the received signal is, for example, an uplink signal (uplink control signal, uplink data signal, uplink reference signal, etc.) transmitted from the user terminal 20.
- the reception signal processing unit 304 can be configured by a signal processor, a signal processing circuit, or a signal processing device described based on common recognition in the technical field according to the present disclosure.
- the reception signal processing unit 304 outputs the information decoded by the reception processing to the control unit 301. For example, when receiving PUCCH including HARQ-ACK, HARQ-ACK is output to control section 301.
- the reception signal processing unit 304 outputs the reception signal and / or the signal after reception processing to the measurement unit 305.
- the measurement unit 305 performs measurement on the received signal.
- the measurement unit 305 can be configured from a measurement device, a measurement circuit, or a measurement device described based on common recognition in the technical field according to the present disclosure.
- the measurement unit 305 may perform RRM (Radio Resource Management) measurement, CSI (Channel State Information) measurement, and the like based on the received signal.
- the measurement unit 305 includes received power (for example, RSRP (Reference Signal Received Power)), received quality (for example, RSRQ (Reference Signal Received Quality), SINR (Signal to Interference plus Noise Ratio), SNR (Signal to Noise Ratio)).
- Signal strength for example, RSSI (Received Signal Strength Indicator)
- propagation path information for example, CSI
- the measurement result may be output to the control unit 301.
- FIG. 6 is a diagram showing an example of the overall configuration of the user terminal according to the present embodiment.
- the user terminal 20 includes a plurality of transmission / reception antennas 201, an amplifier unit 202, a transmission / reception unit 203, a baseband signal processing unit 204, and an application unit 205.
- the transmission / reception antenna 201, the amplifier unit 202, and the transmission / reception unit 203 may each be configured to include one or more.
- the radio frequency signal received by the transmission / reception antenna 201 is amplified by the amplifier unit 202.
- the transmission / reception unit 203 receives the downlink signal amplified by the amplifier unit 202.
- the transmission / reception unit 203 converts the frequency of the received signal into a baseband signal and outputs it to the baseband signal processing unit 204.
- the transmission / reception unit 203 can be configured by a transmitter / receiver, a transmission / reception circuit, or a transmission / reception device described based on common recognition in the technical field according to the present disclosure.
- the transmission / reception unit 203 may be configured as an integral transmission / reception unit, or may be configured from a transmission unit and a reception unit.
- the baseband signal processing unit 204 performs FFT processing, error correction decoding, retransmission control reception processing, and the like on the input baseband signal.
- the downlink user data is transferred to the application unit 205.
- the application unit 205 performs processing related to layers higher than the physical layer and the MAC layer. Also, broadcast information of downlink data may be transferred to the application unit 205.
- uplink user data is input from the application unit 205 to the baseband signal processing unit 204.
- the baseband signal processing unit 204 performs transmission / reception units for retransmission control (for example, HARQ transmission processing), channel coding, precoding, discrete Fourier transform (DFT) processing, IFFT processing, and the like. 203.
- the transmission / reception unit 203 converts the baseband signal output from the baseband signal processing unit 204 into a radio frequency band and transmits it.
- the radio frequency signal frequency-converted by the transmission / reception unit 203 is amplified by the amplifier unit 202 and transmitted from the transmission / reception antenna 201.
- the transmission / reception unit 203 may monitor a control resource set (CORESET: Control REsource SET) using a specific search space determined by the control unit 401 described later.
- CORESET Control REsource SET
- the transmission / reception unit 203 may receive control resource set setting information (CORESET setting information) included in common setting information used for setting a cell-specific downlink control channel parameter.
- CORESET setting information included in common setting information used for setting a cell-specific downlink control channel parameter.
- the transmission / reception unit 203 receives the common control information included in the system information block (SIB), or uses the common information by higher layer signaling in at least one of a handover procedure, a secondary cell addition procedure, and a primary secondary cell addition procedure. Configuration information may be received.
- SIB system information block
- FIG. 7 is a diagram illustrating an example of a functional configuration of the user terminal according to the present embodiment.
- the functional block of the characteristic part in this embodiment is mainly shown, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication.
- the baseband signal processing unit 204 included in the user terminal 20 includes at least a control unit 401, a transmission signal generation unit 402, a mapping unit 403, a reception signal processing unit 404, and a measurement unit 405. Note that these configurations may be included in the user terminal 20, and some or all of the configurations may not be included in the baseband signal processing unit 204.
- the control unit 401 controls the entire user terminal 20.
- the control unit 401 can be configured by a controller, a control circuit, or a control device described based on common recognition in the technical field according to the present disclosure.
- the control unit 401 controls, for example, signal generation in the transmission signal generation unit 402, signal allocation in the mapping unit 403, and the like.
- the control unit 401 also controls signal reception processing in the reception signal processing unit 404, signal measurement in the measurement unit 405, and the like.
- the control unit 401 acquires the downlink control signal and the downlink data signal transmitted from the radio base station 10 from the reception signal processing unit 404.
- the control unit 401 controls the generation of the uplink control signal and / or the uplink data signal based on the result of determining the necessity of retransmission control for the downlink control signal and / or the downlink data signal.
- the control unit 401 may control the setting of the control resource set based on the setting information of the control resource set included in the common setting information used for setting the cell-specific downlink control channel parameter.
- the control resource set may be used for searching for downlink control information that schedules at least one of system information block (SIB) 1, other system information (OSI), and paging.
- SIB system information block
- OSI system information
- the control resource set may be used for searching for downlink control information for scheduling a message in a random access procedure.
- the control unit 401 Based on one or more search space settings, the control unit 401 detects a DCI format that is scrambled by a CRC (Cyclic Redundancy Check) by a random access RNTI (Radio Network Temporary Identifier), and a user.
- the terminal-specific search space (UE-SS) type and at least two types may be determined.
- the UE-SS type may indicate UE-SS.
- the UE-SS may not be configured to further include multiple types.
- the search space type information may be information indicating C-SS or UE-SS.
- control unit 401 may update parameters used for control based on the information.
- the transmission signal generation unit 402 generates an uplink signal (uplink control signal, uplink data signal, uplink reference signal, etc.) based on an instruction from the control unit 401 and outputs the uplink signal to the mapping unit 403.
- the transmission signal generation unit 402 can be configured by a signal generator, a signal generation circuit, or a signal generation device described based on common recognition in the technical field according to the present disclosure.
- the transmission signal generation unit 402 generates an uplink control signal related to delivery confirmation information, channel state information (CSI), and the like based on an instruction from the control unit 401, for example. In addition, the transmission signal generation unit 402 generates an uplink data signal based on an instruction from the control unit 401. For example, the transmission signal generation unit 402 is instructed by the control unit 401 to generate an uplink data signal when the UL grant is included in the downlink control signal notified from the radio base station 10.
- CSI channel state information
- the mapping unit 403 maps the uplink signal generated by the transmission signal generation unit 402 to a radio resource based on an instruction from the control unit 401, and outputs the radio signal to the transmission / reception unit 203.
- the mapping unit 403 can be configured by a mapper, a mapping circuit, or a mapping device described based on common recognition in the technical field according to the present disclosure.
- the reception signal processing unit 404 performs reception processing (for example, demapping, demodulation, decoding, etc.) on the reception signal input from the transmission / reception unit 203.
- the received signal is, for example, a downlink signal (downlink control signal, downlink data signal, downlink reference signal, etc.) transmitted from the radio base station 10.
- the reception signal processing unit 404 can be configured by a signal processor, a signal processing circuit, or a signal processing device described based on common recognition in the technical field according to the present disclosure. Further, the reception signal processing unit 404 can constitute a reception unit according to the present disclosure.
- the reception signal processing unit 404 outputs the information decoded by the reception processing to the control unit 401.
- the reception signal processing unit 404 outputs, for example, broadcast information, system information, RRC signaling, DCI, and the like to the control unit 401.
- the reception signal processing unit 404 outputs the reception signal and / or the signal after reception processing to the measurement unit 405.
- the measurement unit 405 performs measurement on the received signal.
- the measurement unit 405 can be configured from a measurement device, a measurement circuit, or a measurement device described based on common recognition in the technical field according to the present disclosure.
- the measurement unit 405 may perform RRM measurement, CSI measurement, and the like based on the received signal.
- the measurement unit 405 may measure reception power (for example, RSRP), reception quality (for example, RSRQ, SINR, SNR), signal strength (for example, RSSI), propagation path information (for example, CSI), and the like.
- the measurement result may be output to the control unit 401.
- each functional block is realized using one device physically and / or logically coupled, or directly and / or two or more devices physically and / or logically separated. Alternatively, it may be realized indirectly by connecting (for example, using wired and / or wireless) and using these plural devices.
- the wireless base station, the user terminal, and the like in the present embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure.
- FIG. 8 is a diagram illustrating an example of the hardware configuration of the radio base station and the user terminal according to the present embodiment.
- the wireless base station 10 and the user terminal 20 described above may be physically 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. Good.
- the term “apparatus” can be read as a circuit, a device, a unit, or the like.
- the hardware configurations of the radio base station 10 and the user terminal 20 may be configured to include one or a plurality of each device illustrated in the figure, or may be configured not to include some devices.
- processor 1001 may be implemented by one or more chips.
- Each function in the radio base station 10 and the user terminal 20 is calculated by causing the processor 1001 to perform calculations by reading predetermined software (programs) on hardware such as the processor 1001 and the memory 1002, for example, via the communication device 1004. This is realized by controlling communication and controlling reading and / or writing of data in the memory 1002 and the storage 1003.
- the processor 1001 controls the entire computer by operating an operating system, for example.
- the processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like.
- CPU central processing unit
- the baseband signal processing unit 104 (204) and the call processing unit 105 described above may be realized by the processor 1001.
- the processor 1001 reads programs (program codes), software modules, data, and the like from the storage 1003 and / or the communication device 1004 to the memory 1002, and executes various processes according to these.
- programs program codes
- software modules software modules
- data data
- the control unit 401 of the user terminal 20 may be realized by a control program stored in the memory 1002 and operating in the processor 1001, and may be realized similarly for other functional blocks.
- the memory 1002 is a computer-readable recording medium such as a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically EPROM), a RAM (Random Access Memory), or any other suitable storage medium. It may be configured by one.
- the memory 1002 may be called a register, a cache, a main memory (main storage device), or the like.
- the memory 1002 can store a program (program code), a software module, and the like that can be executed to implement the wireless communication method according to the present embodiment.
- the storage 1003 is a computer-readable recording medium such as a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (for example, a compact disk (CD-ROM (Compact Disc ROM)), a digital versatile disk, Blu-ray® disk), removable disk, hard disk drive, smart card, flash memory device (eg, card, stick, key drive), magnetic stripe, database, server, or other suitable storage medium It may be constituted by.
- the storage 1003 may be referred to as an auxiliary storage device.
- the communication device 1004 is hardware (transmission / reception device) for performing communication between computers via a wired and / or wireless network, and is also referred to as 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 frequency division duplex (FDD) and / or time division duplex (TDD). It may be configured.
- FDD frequency division duplex
- TDD time division duplex
- the transmission / reception antenna 101 (201), the amplifier unit 102 (202), the transmission / reception unit 103 (203), the transmission path interface 106, and the like described above may be realized by the communication device 1004.
- the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts an input from the outside.
- the output device 1006 is an output device (for example, a display, a speaker, an LED (Light Emitting Diode) lamp, etc.) that performs output to the outside.
- the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
- the devices such as the processor 1001 and the memory 1002 are connected by a bus 1007 for communicating information.
- the bus 1007 may be configured using a single bus, or may be configured using a different bus for each device.
- the radio base station 10 and the user terminal 20 include a microprocessor, a digital signal processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), an FPGA (Field Programmable Gate Array), and the like. It may be configured including hardware, and a part or all of each functional block may be realized using the hardware. For example, the processor 1001 may be implemented using at least one of these hardware.
- DSP digital signal processor
- ASIC Application Specific Integrated Circuit
- PLD Programmable Logic Device
- FPGA Field Programmable Gate Array
- the channel and / or symbol may be a signal (signaling).
- the signal may be a message.
- the reference signal may be abbreviated as RS (Reference Signal), and may be referred to as a pilot, a pilot signal, or the like depending on an applied standard.
- a component carrier CC: Component Carrier
- CC Component Carrier
- the radio frame may be configured by one or a plurality of periods (frames) in the time domain.
- Each of the one or more periods (frames) constituting the radio frame may be referred to as a subframe.
- a subframe may be composed of one or more slots in the time domain.
- the subframe may have a fixed time length (eg, 1 ms) that does not depend on the neurology.
- the slot may be configured by one or a plurality of symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.) in the time domain.
- the slot may be a time unit based on the numerology.
- the slot may include a plurality of mini slots. Each minislot may be configured with one or more symbols in the time domain. The minislot may also be called a subslot.
- Radio frame, subframe, slot, minislot, and symbol all represent time units when transmitting signals. Different names may be used for the radio frame, subframe, slot, minislot, and symbol.
- one subframe may be called a transmission time interval (TTI)
- TTI transmission time interval
- a plurality of consecutive subframes may be called a TTI
- TTI slot or one minislot
- a unit representing TTI may be called a slot, a minislot, or the like instead of a subframe.
- TTI means, for example, a minimum time unit for scheduling in wireless communication.
- a radio base station performs scheduling for assigning radio resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) to each user terminal in units of TTI.
- 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), a code block, and / or a code word, or may be a processing unit such as scheduling or link adaptation.
- a time interval for example, the number of symbols
- a transport block, a code block, and / or a code word is actually mapped may be shorter than the TTI.
- one or more TTIs may be the minimum scheduling unit. Further, the number of slots (the number of mini-slots) constituting 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, or a long subframe.
- a TTI shorter than a 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, or a subslot.
- a long TTI (eg, normal TTI, subframe, etc.) may be read as a TTI having a time length exceeding 1 ms, and a short TTI (eg, shortened TTI) is less than the TTI length of the long TTI and 1 ms. It may be replaced with 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 (subcarriers) in the frequency domain. Further, the RB may include one or a plurality of symbols in the time domain, and may have a length of 1 slot, 1 mini slot, 1 subframe, or 1 TTI. One TTI and one subframe may each be composed of one or a plurality of resource blocks.
- One or more RBs include physical resource blocks (PRB), sub-carrier groups (SCG), resource element groups (REG), PRB pairs, RB pairs, etc. May be called.
- the resource block may be configured by one or a plurality of resource elements (RE: Resource Element).
- RE Resource Element
- 1RE may be a radio resource region of 1 subcarrier and 1 symbol.
- the structure of the above-described radio frame, subframe, slot, minislot, symbol, etc. is merely 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 the slot, the number of symbols and RBs included in the slot or minislot, and the RB The number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP) length, and the like can be variously changed.
- the information, parameters, and the like described in this specification may be expressed using absolute values, may be expressed using relative values from a predetermined value, or other corresponding information may be used. May be represented.
- the radio resource may be indicated by a predetermined index.
- names used for parameters and the like are not limited names in any way.
- various channels PUCCH (Physical Uplink Control Channel), PDCCH (Physical Downlink Control Channel), etc.
- information elements can be identified by any suitable name, so the various channels and information elements assigned to them.
- the name is not limited in any way.
- information, signals, etc. can be output from the upper layer to the lower layer and / or from the lower layer to the upper layer.
- Information, signals, and the like may be input / output via a plurality of network nodes.
- the input / output information, signals, etc. may be stored in a specific location (for example, a memory) or may be managed using a management table. Input / output information, signals, and the like can be overwritten, updated, or added. The output information, signals, etc. may be deleted. Input information, signals, and the like may be transmitted to other devices.
- information notification includes physical layer signaling (eg, downlink control information (DCI), uplink control information (UCI)), upper layer signaling (eg, RRC (Radio Resource Control) signaling), It may be implemented by broadcast information (Master Information Block (MIB), System Information Block (SIB), etc.), MAC (Medium Access Control) signaling), other signals, or a combination thereof.
- DCI downlink control information
- UCI uplink control information
- RRC Radio Resource Control
- MIB Master Information Block
- SIB System Information Block
- MAC Medium Access Control
- the physical layer signaling may be referred to as L1 / L2 (Layer 1 / Layer 2) control information (L1 / L2 control signal), L1 control information (L1 control signal), or the like.
- the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC connection setup (RRCConnectionSetup) message, an RRC connection reconfiguration (RRCConnectionReconfiguration) message, or the like.
- the MAC signaling may be notified using, for example, a MAC control element (MAC CE (Control Element)).
- notification of predetermined information is not limited to explicit notification, but implicitly (for example, by not performing notification of the predetermined information or other information) May be performed).
- the determination may be performed by a value represented by 1 bit (0 or 1), or may be performed by a boolean value represented by true or false.
- the comparison may be performed by numerical comparison (for example, comparison with a predetermined value).
- software, instructions, information, etc. may be sent and received via a transmission medium.
- software can use websites, servers using wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and / or wireless technology (infrared, microwave, etc.) , Or other remote sources, these wired and / or wireless technologies are included within the definition of transmission media.
- system and “network” used in this specification are used interchangeably.
- base station BS
- radio base station eNB
- gNB gNodeB
- cell gNodeB
- cell group a base station
- carrier a base station
- a base station may also be called in terms such as a fixed station, NodeB, eNodeB (eNB), access point, transmission point, reception point, femtocell, and small cell.
- the base station can accommodate one or a plurality of (for example, three) cells (also called sectors). If the base station accommodates multiple cells, the entire coverage area of the base station can be partitioned into multiple smaller areas, each smaller area being a base station subsystem (eg, an indoor small base station (RRH: Remote Radio Head)) can also provide communication services.
- a base station subsystem eg, an indoor small base station (RRH: Remote Radio Head)
- RRH Remote Radio Head
- the term “cell” or “sector” refers to part or all of the coverage area of a base station and / or base station subsystem that provides communication services in this coverage.
- 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 terminal, remote terminal, handset, user agent, mobile client, client or some other suitable terminology.
- the radio base station in this specification may be read by the user terminal.
- each aspect / embodiment of the present disclosure may be applied to a configuration in which communication between a radio base station and a user terminal is replaced with communication between a plurality of user terminals (D2D: Device-to-Device).
- the user terminal 20 may have a function that the wireless base station 10 has.
- words such as “up” and “down” may be read as “side”.
- the uplink channel may be read as a side channel.
- a user terminal in this specification may be read by a radio base station.
- the wireless base station 10 may have a function that the user terminal 20 has.
- the operation performed by the base station may be performed by the upper node in some cases.
- various operations performed for communication with a terminal may include a base station and one or more network nodes other than the base station (for example, It is obvious that this can be done by MME (Mobility Management Entity), S-GW (Serving-Gateway), etc., but not limited thereto) or a combination thereof.
- MME Mobility Management Entity
- S-GW Serving-Gateway
- each aspect / embodiment described in this specification may be used alone, may be used in combination, or may be switched according to execution.
- the order of the processing procedures, sequences, flowcharts, and the like of each aspect / embodiment described in this specification may be changed as long as there is no contradiction.
- the methods described herein present the elements of the various steps in an exemplary order and are not limited to the specific order presented.
- Each aspect / embodiment described in this specification includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), LTE-B (LTE-Beyond), SUPER 3G, IMT-Advanced, 4G (4th generation mobile) communication system), 5G (5th generation mobile communication system), FRA (Future Radio Access), New-RAT (Radio Access Technology), NR (New Radio), NX (New radio access), FX (Future generation radio access), GSM (registered trademark) (Global System for Mobile communications), 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) ), A system using another appropriate wireless communication method, and / or a next generation system extended based on these methods.
- LTE Long Term Evolution
- LTE-A Long Term Evolution-Advanced
- 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.”
- any reference to elements using designations such as “first”, “second”, etc. as used herein does not generally limit the amount or order of those elements. These designations can be used herein as a convenient way to distinguish between two or more elements. Thus, reference to the first and second elements does not mean that only two elements can be employed or that the first element must precede the second element in some way.
- determining may encompass a wide variety of actions. For example, “determination” means calculating, computing, processing, deriving, investigating, looking up (eg, table, database or other data). It may be considered to “judge” (search in structure), ascertaining, etc.
- “determination (decision)” includes receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), access ( accessing) (e.g., accessing data in memory), etc. may be considered to be “determining”. Also, “determination” is considered to be “determination (resolving)”, “selecting”, “choosing”, “establishing”, “comparing”, etc. Also good. That is, “determination (determination)” may be regarded as “determination (determination)” of some operation.
- connection is any direct or indirect connection between two or more elements or By coupling, it can include the presence of one or more intermediate elements between two elements that are “connected” or “coupled” to each other.
- the coupling or connection between the elements may be physical, logical, or a combination thereof. For example, “connection” may be read as “access”.
- the radio frequency domain can be considered “connected” or “coupled” to each other, such as with electromagnetic energy having wavelengths in the microwave and / or light (both visible and invisible) regions.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
Description
を具備することを特徴とする。
・CORESETの識別子(ControlResourceSetId)。
・CORESETの周波数リソース(frequencyDomainResources)。
・CORESETの時間リソース(期間(duration))。例えば、当該期間は、一以上のシンボルで構成されてもよい。
・CCEとREGとのマッピングのタイプ(CCE-REGマッピングタイプ(cce-REG-MappingType))。例えば、CCE-REGマッピングタイプは、インターリーブ(interleaved)又はノンインターリーブ(nonInterleaved)を示してもよい。
・REGバンドルのサイズ(reg-BundleSize、CORESET-REG-bundle-size)
・CORESETのインタリーバーのサイズ(interleaverSize、CORESET-interleaver-size)
・インターリーブの場合のシフト量のインデックス(シフトインデックス、shiftIndex、CORESET-shift-index)。
・周波数領域におけるプリコーダーの粒度(precoderGranularity、CORESET-precoder-granuality)。当該粒度は、REGバンドルのサイズと同じ又は全てのリソースブロックに指定される。
・PDCCH用の送信構成識別子(TCI:Transmission Configuration Indication)の状態(TCI状態)。TCI状態は、PDCCHの疑似コロケーション(QCL)に関する情報(QCL情報又はPDCCH用のQCL情報等ともいう)を示してもよい(含んでもよい)。当該PDCCH用のQCL情報は、例えば、当該PDCCH(又は当該PDCCH用のDMRSポート)とCORESET内の下り参照信号(DL-RS)とのQCLに関する情報であり、例えば、QCL関係となるDL-RSに関する情報(DL-RS関連情報)及び上記QCLタイプを示す情報(QCLタイプ情報)の少なくとも一つを含んでもよい。
・TCIフィールドの有効化/無効化。
・ユーザ端末が接続する無線基地局を切り替えるハンドオーバ(HO:Handover)。
・ランダムアクセス(RA:Random Access)。
・キャリアアグリゲーション(CA:Carrier Aggregation)におけるセカンダリセル(SCell:Secondary Cell)の追加。
・デュアルコネクティビティ(DC:Dual Connectivity)のマスタセルグループ(MCG)又はセカンダリセルグループ(SCG)におけるSCellの追加。なお、DCは、例えば、EN-DC(E-UTRA NR Dual Connectivity with MCG using E-UTRA and SCG using NR)であってもよいし、又は、NRを用いたMCGとSCGのDRであってもよい。
・DCのSCGのプライマリセカンダリセル(PSCell:Primary Secondary Cell)の追加。
・ページング。
・サーチスペース(例えば、一以上のユーザ端末に共通のサーチスペース)の設定情報(サーチスペース設定情報、CommonSearchSpace、SearchSpace、SearchSpace information element(IE)等と呼ばれてもよい)。サーチスペース設定情報については、後述する。
・SIB1及びRMSIの少なくとも一つをスケジューリングするDCI用のサーチスペースの識別子(サーチスペースID(Identifier)、searchSpaceSIB1、SearchSpaceId等ともいう)。
・他のシステム情報(例えば、SIB2など)をスケジューリングするDCI用のサーチスペースの識別子(サーチスペースID、searchSpaceOtherSystemInformation、osi-SearchSpace、SearchSpaceId等ともいう)。
・ページングをスケーリングするDCI用のサーチスペースの識別子(サーチスペースID、pagingSearchSpace、paging-SearchSpace、SearchSpaceId等ともいう)。
・ランダムアクセス手順におけるメッセージ2、4の少なくとも一つをスケーリングするDCI用のサーチスペースの識別子(サーチスペースID、RASearchSpace、ra-SearchSpace、SearchSpaceId等ともいう)。
以下、本開示の本実施の形態に係る無線通信システムの構成について説明する。この無線通信システムでは、本開示の上記各実施形態に係る無線通信方法のいずれか又はこれらの組み合わせを用いて通信が行われる。
図4は、本実施の形態に係る無線基地局の全体構成の一例を示す図である。無線基地局10は、複数の送受信アンテナ101と、アンプ部102と、送受信部103と、ベースバンド信号処理部104と、呼処理部105と、伝送路インターフェース106と、を備えている。なお、送受信アンテナ101、アンプ部102、送受信部103は、それぞれ1つ以上を含むように構成されればよい。
図6は、本実施の形態に係るユーザ端末の全体構成の一例を示す図である。ユーザ端末20は、複数の送受信アンテナ201と、アンプ部202と、送受信部203と、ベースバンド信号処理部204と、アプリケーション部205と、を備えている。なお、送受信アンテナ201、アンプ部202、送受信部203は、それぞれ1つ以上を含むように構成されればよい。
なお、上記実施形態の説明に用いたブロック図は、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/又はソフトウェア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、物理的及び/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、物理的及び/又は論理的に分離した2つ以上の装置を直接的及び/又は間接的に(例えば、有線及び/又は無線を用いて)接続し、これら複数の装置を用いて実現されてもよい。
なお、本明細書において説明した用語及び/又は本明細書の理解に必要な用語については、同一の又は類似する意味を有する用語と置き換えてもよい。例えば、チャネル及び/又はシンボルは信号(シグナリング)であってもよい。また、信号はメッセージであってもよい。参照信号は、RS(Reference Signal)と略称することもでき、適用される標準によってパイロット(Pilot)、パイロット信号などと呼ばれてもよい。また、コンポーネントキャリア(CC:Component Carrier)は、セル、周波数キャリア、キャリア周波数などと呼ばれてもよい。
Claims (5)
- セル固有の下り制御チャネル用パラメータの設定に用いられる共通設定情報に含まれる、制御リソースセットの設定情報を受信する受信部と、
前記設定情報に基づいて、前記制御リソースセットの設定を制御する制御部と、
を具備することを特徴とするユーザ端末。 - 前記制御リソースセットは、システム情報ブロック(SIB)1、他のシステム情報(OSI)及びページングの少なくとも一つをスケジューリングする下り制御情報のサーチに用いられることを特徴とする請求項1に記載のユーザ端末。
- 前記制御リソースセットは、ランダムアクセス手順におけるメッセージをスケジューリングする下り制御情報のサーチに用いられることを特徴とする請求項1又は請求項2に記載のユーザ端末。
- 前記受信部は、システム情報ブロック(SIB)に含まれる前記共通制御情報を受信する、又は、ハンドオーバ手順、セカンダリセルの追加手順、プライマリセカンダリセルの追加手順の少なくとも一つにおいて上位レイヤシグナリングにより前記共通設定情報を受信することを特徴とする請求項1から請求項3のいずれかに記載のユーザ端末。
- ユーザ端末において、
セル固有の下り制御チャネル用パラメータの設定に用いられる共通設定情報に含まれる、制御リソースセットの設定情報を受信する工程と、
前記設定情報に基づいて、前記制御リソースセットの設定を制御する工程と、
を具備することを特徴とする無線通信方法。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020506004A JP7140824B2 (ja) | 2018-03-13 | 2018-03-13 | 端末、無線通信方法、基地局及びシステム |
IL277302A IL277302B2 (en) | 2018-03-13 | 2018-03-13 | User terminal unit and radio communication method |
US16/980,170 US11646933B2 (en) | 2018-03-13 | 2018-03-13 | Terminal, radio communication method, and base station |
SG11202008830XA SG11202008830XA (en) | 2018-03-13 | 2018-03-13 | User terminal and radio communication method |
EP18910045.6A EP3768009A4 (en) | 2018-03-13 | 2018-03-13 | USER EQUIPMENT AND WIRELESS COMMUNICATION PROCESS |
PCT/JP2018/009812 WO2019175989A1 (ja) | 2018-03-13 | 2018-03-13 | ユーザ端末及び無線通信方法 |
CN201880092734.3A CN112106416B (zh) | 2018-03-13 | 2018-03-13 | 用户终端以及无线通信方法 |
BR112020018584-1A BR112020018584A2 (pt) | 2018-03-13 | 2018-03-13 | Terminal de usuário e método de radiocomunicação |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2018/009812 WO2019175989A1 (ja) | 2018-03-13 | 2018-03-13 | ユーザ端末及び無線通信方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019175989A1 true WO2019175989A1 (ja) | 2019-09-19 |
Family
ID=67907622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2018/009812 WO2019175989A1 (ja) | 2018-03-13 | 2018-03-13 | ユーザ端末及び無線通信方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US11646933B2 (ja) |
EP (1) | EP3768009A4 (ja) |
JP (1) | JP7140824B2 (ja) |
CN (1) | CN112106416B (ja) |
BR (1) | BR112020018584A2 (ja) |
IL (1) | IL277302B2 (ja) |
SG (1) | SG11202008830XA (ja) |
WO (1) | WO2019175989A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021518089A (ja) * | 2018-04-13 | 2021-07-29 | 維沃移動通信有限公司Vivo Mobile Communication Co., Ltd. | 制御方法及び端末 |
WO2021160159A1 (en) * | 2020-02-14 | 2021-08-19 | Mediatek Singapore Pte. Ltd. | Methods and apparatus of group scheduling for nr multicast service |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113677025B (zh) * | 2020-05-15 | 2024-05-14 | 华为技术有限公司 | 一种通信方法和通信装置 |
JP7425259B2 (ja) * | 2021-04-01 | 2024-01-30 | 京セラ株式会社 | 通信制御方法及び基地局 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103313404B (zh) | 2012-03-16 | 2017-06-13 | 华为技术有限公司 | 一种控制信道资源传输方法、用户设备及基站 |
US20150181568A1 (en) * | 2012-06-05 | 2015-06-25 | Lg Electronics Inc. | Method and apparatus for receiving control information in wireless communication system |
US9736829B2 (en) * | 2013-10-14 | 2017-08-15 | Qualcomm Incorporated | Downlink control management in an unlicensed or shared spectrum |
JP6239756B2 (ja) * | 2014-07-11 | 2017-11-29 | 株式会社Nttドコモ | ユーザ端末、無線基地局及び無線通信方法 |
JP6081531B2 (ja) * | 2015-06-26 | 2017-02-15 | 株式会社Nttドコモ | ユーザ端末、無線基地局及び無線通信方法 |
WO2017073651A1 (ja) * | 2015-10-27 | 2017-05-04 | 株式会社Nttドコモ | ユーザ端末、無線基地局及び無線通信方法 |
EP3410625B1 (en) * | 2016-03-16 | 2020-08-26 | LG Electronics Inc. | Techniques for transmission and reception of control information in a wireless communication system |
WO2018012619A1 (ja) | 2016-07-15 | 2018-01-18 | 株式会社Nttドコモ | ユーザ端末及び無線通信方法 |
US10631178B2 (en) * | 2017-02-06 | 2020-04-21 | Qualcomm Incorporated | Control resource set group design for improved communications devices, systems, and networks |
US11395338B2 (en) * | 2017-07-12 | 2022-07-19 | Samsung Electronics Co., Ltd. | Method and apparatus for control resource set configuration for 5G next radio system |
CN107659994A (zh) * | 2017-09-05 | 2018-02-02 | 宇龙计算机通信科技(深圳)有限公司 | 资源指示方法、相关设备及通信系统 |
US20190158205A1 (en) * | 2017-11-17 | 2019-05-23 | Sharp Laboratories Of America, Inc. | User equipments, base stations and methods |
CA3034009A1 (en) * | 2018-02-15 | 2019-08-15 | Comcast Cable Communications, Llc | Wireless communications using wireless device information |
-
2018
- 2018-03-13 EP EP18910045.6A patent/EP3768009A4/en active Pending
- 2018-03-13 CN CN201880092734.3A patent/CN112106416B/zh active Active
- 2018-03-13 IL IL277302A patent/IL277302B2/en unknown
- 2018-03-13 US US16/980,170 patent/US11646933B2/en active Active
- 2018-03-13 JP JP2020506004A patent/JP7140824B2/ja active Active
- 2018-03-13 BR BR112020018584-1A patent/BR112020018584A2/pt unknown
- 2018-03-13 SG SG11202008830XA patent/SG11202008830XA/en unknown
- 2018-03-13 WO PCT/JP2018/009812 patent/WO2019175989A1/ja unknown
Non-Patent Citations (3)
Title |
---|
"3rd Generation Partnership Project; Technical Specification Group Radio Access Network NR Radio Resource Control (RRC) protocol specification (Release 15)", 3GPP TS 38.331, V15.0.0, December 2017 (2017-12-01), XP051392365, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/Specs/2017-12/Rel-15/38_series/38331-f00.zip> [retrieved on 20180104] * |
"Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8", 3GPP TS 36.300, April 2010 (2010-04-01) |
SAMSUNG: "Corrections on Search Space Design", 3GPP TSG-RAN WG1 #92 R1-1801974, 20 February 2018 (2018-02-20), XP051398349, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGRl_92/Docs/Rl-1801974.zip> * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021518089A (ja) * | 2018-04-13 | 2021-07-29 | 維沃移動通信有限公司Vivo Mobile Communication Co., Ltd. | 制御方法及び端末 |
JP7128289B2 (ja) | 2018-04-13 | 2022-08-30 | 維沃移動通信有限公司 | 制御方法及び端末 |
US11800545B2 (en) | 2018-04-13 | 2023-10-24 | Vivo Mobile Communication Co., Ltd. | Control method and terminal |
WO2021160159A1 (en) * | 2020-02-14 | 2021-08-19 | Mediatek Singapore Pte. Ltd. | Methods and apparatus of group scheduling for nr multicast service |
WO2021159466A1 (en) * | 2020-02-14 | 2021-08-19 | Mediatek Singapore Pte. Ltd. | Methods and apparatus of group scheduling for nr multicast service |
CN115088356A (zh) * | 2020-02-14 | 2022-09-20 | 联发科技(新加坡)私人有限公司 | 用于nr多播服务的组调度方法和设备 |
Also Published As
Publication number | Publication date |
---|---|
CN112106416B (zh) | 2024-05-07 |
EP3768009A1 (en) | 2021-01-20 |
JPWO2019175989A1 (ja) | 2021-02-25 |
CN112106416A (zh) | 2020-12-18 |
US11646933B2 (en) | 2023-05-09 |
IL277302B2 (en) | 2024-02-01 |
IL277302B1 (en) | 2023-10-01 |
JP7140824B2 (ja) | 2022-09-21 |
SG11202008830XA (en) | 2020-10-29 |
US20210028979A1 (en) | 2021-01-28 |
EP3768009A4 (en) | 2021-10-27 |
IL277302A (en) | 2020-10-29 |
BR112020018584A2 (pt) | 2020-12-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR102456057B1 (ko) | 유저단말 및 무선 통신 방법 | |
CN112930704B (zh) | 终端、基站、系统以及无线通信方法 | |
WO2019171518A1 (ja) | ユーザ端末及び無線通信方法 | |
JP2022159522A (ja) | 端末、無線通信方法及びシステム | |
JP7395468B2 (ja) | 端末、無線通信方法、基地局及びシステム | |
WO2019215794A1 (ja) | ユーザ端末及び無線通信方法 | |
WO2019171519A1 (ja) | ユーザ端末及び無線通信方法 | |
JP7163320B2 (ja) | 端末、無線通信方法、基地局およびシステム | |
CN111434162B (zh) | 用户终端以及无线通信方法 | |
WO2018143389A1 (ja) | ユーザ端末及び無線通信方法 | |
WO2018207369A1 (ja) | ユーザ端末及び無線通信方法 | |
WO2019176032A1 (ja) | ユーザ端末及び無線通信方法 | |
WO2019234929A1 (ja) | ユーザ端末及び無線通信方法 | |
WO2019215921A1 (ja) | ユーザ端末及び無線通信方法 | |
CN112567844B (zh) | 用户终端以及无线通信方法 | |
WO2019193666A1 (ja) | ユーザ端末及び無線基地局 | |
WO2019159296A1 (ja) | ユーザ端末及び無線通信方法 | |
WO2019220624A1 (ja) | ユーザ端末及び無線基地局 | |
WO2018207374A1 (ja) | ユーザ端末及び無線通信方法 | |
WO2019239503A1 (ja) | ユーザ端末 | |
WO2019159295A1 (ja) | ユーザ端末及び無線通信方法 | |
WO2019135288A1 (ja) | ユーザ端末及び無線通信方法 | |
WO2019135287A1 (ja) | ユーザ端末及び無線通信方法 | |
WO2019155637A1 (ja) | 送信装置、受信装置及び無線通信方法 | |
WO2019138510A1 (ja) | ユーザ端末及び無線通信方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18910045 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2020506004 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2018910045 Country of ref document: EP Effective date: 20201013 |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112020018584 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: 112020018584 Country of ref document: BR Kind code of ref document: A2 Effective date: 20200911 |