WO2016163503A1 - ユーザ端末、無線基地局、無線通信システムおよび無線通信方法 - Google Patents
ユーザ端末、無線基地局、無線通信システムおよび無線通信方法 Download PDFInfo
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- WO2016163503A1 WO2016163503A1 PCT/JP2016/061498 JP2016061498W WO2016163503A1 WO 2016163503 A1 WO2016163503 A1 WO 2016163503A1 JP 2016061498 W JP2016061498 W JP 2016061498W WO 2016163503 A1 WO2016163503 A1 WO 2016163503A1
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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
- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0016—Time-frequency-code
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0037—Inter-user or inter-terminal allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/121—Wireless traffic scheduling for groups of terminals or users
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
Definitions
- the present invention relates to a user terminal, a radio base station, a radio communication system, and a radio communication method in a next generation mobile communication system.
- LTE Long Term Evolution
- FRA Full Radio Access
- the 10/11 system band includes at least one component carrier (CC: Component Carrier) having the system band of the LTE system as a unit.
- CC Component Carrier
- CA carrier aggregation
- LTE Rel. Is a further successor system of LTE. 12, various scenarios in which a plurality of cells are used in different frequency bands (carriers) are being studied.
- carriers frequency bands
- the radio base stations forming a plurality of cells are substantially the same, the above-described carrier aggregation can be applied.
- radio base stations forming a plurality of cells are completely different, it is conceivable to apply dual connectivity (DC).
- DC dual connectivity
- E-UTRA Evolved Universal Terrestrial Radio Access
- E-UTRAN Evolved Universal Terrestrial Radio Access Network
- LTE Rel In carrier aggregation in 10/11/12, the maximum number of component carriers that can be set per user terminal is limited to five. LTE Rel. From 13 onwards, in order to realize more flexible and high-speed wireless communication, the number of component carriers that can be set per user terminal is six or more, and extended carrier aggregation for bundling these component carriers is being studied.
- CCS Cross Carrier Scheduling
- PDCCH Physical Downlink Control Channel
- EPDCCH Enhanced
- DCI Downlink Control Information
- the present invention has been made in view of this point, and provides a user terminal, a radio base station, a radio communication system, and a radio communication method that can reduce control information required for cross carrier scheduling in extended carrier aggregation. For the purpose.
- a user terminal is a user terminal that can communicate with a radio base station using six or more component carriers, includes scheduling control information for a plurality of component carriers, and includes an information field common to a plurality of component carriers, It has a receiving part which receives the downlink control channel containing group DCI (Downlink Control Information) comprised from the information field specific to each component carrier.
- group DCI Downlink Control Information
- extended carrier aggregation in which the limit of the number of component carriers that can be set per user terminal is eliminated is being studied. In the extended aggregation, for example, it is considered to bundle up to 32 component carriers. Extended carrier aggregation enables more flexible and faster wireless communication. In addition, a large number of continuous ultra-wideband component carriers can be bundled by extended carrier aggregation.
- one component carrier performs cross carrier scheduling to a maximum of five component carriers including its own component carrier.
- one component carrier performs cross-carrier scheduling to a maximum of 32 component carriers including its own component carrier. Therefore, one PDCCH (Physical Downlink Control Channel) or EPDCCH (Enhanced PDCCH) needs to support cross-carrier scheduling of more than five component carriers.
- PDCCH Physical Downlink Control Channel
- EPDCCH Enhanced PDCCH
- FIG. 1A shows an example in which a maximum of 32 component carriers are divided into a plurality of cell groups composed of 1 to 8 component carriers and cross carrier scheduling is performed for each cell group.
- One component carrier performs cross-carrier scheduling on more component carriers (eight in FIG. 1A) than five component carriers.
- the existing 3-bit CIF Carrier Indicator Field
- FIG. 1B illustrates an example in which one component carrier performs cross-carrier scheduling on a maximum of 32 component carriers (32 in FIG. 1B).
- One component carrier that performs cross-carrier scheduling may be a component carrier in a license band, and the remaining 31 component carriers may be component carriers in an unlicensed band.
- the license band refers to a frequency band licensed by an operator, and the unlicensed band refers to a frequency band that does not require a license.
- one PDCCH or EPDCCH supports cross carrier scheduling of five component carriers.
- one PDCCH or EPDCCH supports cross carrier scheduling of 6 or more component carriers (6 to 32 component carriers).
- the user terminal performs blind decoding on the PDCCH or EPDCCH, and detects DCI (Downlink Control Information) that is a control signal addressed to the terminal itself.
- DCI Downlink Control Information
- DCI Downlink Control Information
- FIG. 2 When performing cross-carrier scheduling of 32 component carriers, 64 DCIs are required for uplink and downlink. Therefore, the capacity of PDCCH or EPDCCH is limited as the number of component carriers supported for cross carrier scheduling increases.
- the present inventors have found a new DCI format configuration that supports cross-carrier scheduling of a plurality of component carriers. Specifically, the DCIs for a plurality of component carriers are grouped into one DCI, thereby reducing control information required for cross carrier scheduling.
- the DCI may be a control signal detected by blind decoding of PDCCH or EPDCCH as one DCI.
- DCI format 1A group DCI including scheduling control information of a plurality of component carriers is defined (see FIG. 3A).
- a plurality of DCI formats 1A are grouped into one new DCI format.
- DCI format 1A includes control information such as CIF, Flag (Flag for format differentiation), RBA (Resource Block Assignment), MCS (Modulation and Coding Scheme), HPN (HARQ (Hybrid Automatic Repeat Request) Process Number), NDI (New Data Indicator (Indicator), RV (Redundancy Version), TPC (Transmission Power Control) command and SRS (Sounding Reference Signal) request.
- the DCI to be grouped is not limited to the DCI format 1A.
- it may be a DCI format 2C including scheduling information of a plurality of layers of component carriers targeted by DCI, or a data demodulation DM-RS (Demodulation Reference Signal) scramble sequence is notified.
- DCI format 2D including fields (Antenna port (s), Scrambling identity and number of layers) for notification, fields for reporting PDSCH mapping pattern information (PDSCH RE Mapping and Quasi-Co-Location Indicator), etc. It may be a thing.
- the new DCI format is composed of an information field common to a plurality of component carriers and an information field unique to each component carrier (see FIG. 3B).
- the information field common to the component carriers includes scheduling control information common to a plurality of component carriers.
- the component carrier specific information field includes scheduling control information specific to each component carrier.
- HPC Physical Uplink Shared Channel
- NDI Physical Uplink Shared Channel
- MCS Physical Uplink Shared Channel
- RBA TPC command (only DCI format 0/4) for PUSCH (Physical Uplink Shared Channel), SRS request, and the like can be included in the component carrier specific information field.
- precoding information cyclic shift information for DM-RS (cyclic shift for DMRS and OCC (Orthogonal Cover Codes) index) (DCI format 0/4 only) and uplink index (TDD (Time Division Duplex)) UL-DL configuration # 0 only) can also be included in the component carrier specific information field.
- DM-RS cyclic shift for DMRS and OCC (Orthogonal Cover Codes) index
- TDD Time Division Duplex
- information for notifying DM-RS scramble sequences for data demodulation (Antenna port (s), Scrambling identity and number of layers), information for notifying PDSCH mapping pattern information (PDSCH RE Mapping and Quasi- Co-Location Indicator) can also be included in the information field specific to the component carrier.
- CPC Physical Uplink Control Channel
- ARO Acknowledgement Resource Offset
- DAI Downlink Assignment Index
- CSI Channel State Information
- FIG. 4A shows an example of a group DCI that transmits a downlink assignment.
- FIG. 4B shows an example of a group DCI that transmits an uplink grant.
- a field with a white background indicates an information field common to component carriers, and a field with a halftone background indicates an information field unique to each component carrier.
- group DCI When group DCI is set, only one CIF field may be used regardless of the number of component carriers, and the index of the cell group to which group DCI assigns may be specified by the value. For example, if CC # 0 to # 5 are group # 1, CC # 6 to # 10 are group 2, and group DCI is transmitted and received for each group, which group is in the CIF field included in group DCI? To be notified. Thereby, since it is not necessary to insert a CIF field for every component carrier, the overhead for a CIF field can be reduced when scheduling with respect to many component carriers.
- the component carrier individual scheduling information of the component carrier corresponding to a value of 0 in the bitmap may not be included in the group DCI.
- the user terminal determines which component carrier dedicated scheduling information is included for which component carrier from the CIF value. Thereby, the component carrier individual scheduling information for the component carrier having no scheduling can be reduced, so that the overhead can be further reduced.
- the user terminal determines all the components included in the group DCI according to the value of the Flag bit. It may be determined whether the carrier scheduling information is a downlink assignment or an uplink grant. This eliminates the need for individual component carrier flag bits, thereby reducing the overhead of PDCCH or EPDCCH.
- the flag bits may not be inserted, and the group DCIs of the respective payloads may be blind-decoded. Thereby, when the payloads are different, the Flag bit is not used, so that the overhead can be further reduced.
- the Flag bit may be included in the information field unique to each component carrier.
- the user terminal identifies whether the DCI of the individual component carrier transmits a downlink assignment or an uplink grant from the information field unique to each component carrier.
- downlink assignments and uplink grants for different component carriers can be multiplexed in one group DCI, so that scheduling information can be transmitted and received by one group DCI even when there are both upper and lower scheduling. Become. As a result, scheduling control information can be transmitted efficiently.
- the SRS request field included in the downlink assignment is a bit that triggers SRS transmission of the PUCCH transmission cell, and the SRS request field included in the uplink grant triggers SRS transmission of the cell to which the PUSCH is allocated. Has been interpreted as a bit.
- the group DCI that transmits the downlink assignment includes the SRS request field in the information field common to the component carriers.
- the SRS request field is unique to each component carrier. May be included in the information field.
- group DCI that transmits the uplink grant since SRS transmission can be requested for each component carrier, channel measurement control can be individually performed for each component carrier.
- the probability that the transmission power of the user terminal reaches the upper limit (becomes Power-limited) can be reduced. . As a result, channel quality measurement by SRS can be performed more accurately.
- the TPC command field included in the downlink assignment is a bit for controlling the PUCCH transmission power of the PUCCH transmission cell
- the TPC command field included in the uplink grant is the PUSCH / SRS transmission of the cell to which the PUSCH is allocated. It has been interpreted as a bit that controls power.
- the group DCI that transmits the downlink assignment includes the TPC command field in the information field common to the component carriers, and the group DCI that transmits the uplink grant includes the TPC command field unique to each component carrier. May be included in the information field.
- transmission power can be controlled for each component carrier. Therefore, it is possible to increase transmission power only for component carriers with insufficient power, and to reduce transmission power for component carriers with excessive power. Become. As a result, since component carriers with excessive transmission power can be reduced, it is possible to reduce interference power with respect to neighboring cells and further improve uplink performance.
- DAI field Conventionally, in TDD, except for the case of UL-DL configuration # 0, DAI is inserted in each downlink DCI and uplink DCI. In the case of UL-DL configuration # 0, DAI is not used and an uplink index is used. Note that DAI exists only in the case of TDD, and does not exist in the case of FDD (Frequency Division Duplex).
- the DAI field may be included in the information field common to the component carriers, and the uplink index field may be included in the information field specific to each component carrier.
- the DAI field in the information field common to the component carriers, overhead can be reduced.
- the uplink index field in the information field for each component carrier, it is possible to appropriately schedule the uplink subframe for each component carrier.
- the DAI field may be included in the information field unique to each component carrier.
- the CSI request field is a bit used to trigger a CSI report, and the user terminal has been able to transmit one or more CSIs on the PUSCH in response to the trigger.
- the CSI request field may be included in the information field common to the component carriers. Thereby, overhead can be reduced.
- the total payload of the group DCI generally increases as the number of component carriers increases. In a situation where carrier aggregation is performed for a large number of component carriers, it is more important to increase throughput by bundling a wide band and communicating at once than fine scheduling control for each component carrier. Therefore, it is possible to further reduce the total payload of the group DCI by making the scheduling control rough.
- FIG. 5A shows an example of a group DCI that transmits a downlink assignment.
- FIG. 5B shows an example of a group DCI that transmits an uplink grant.
- a field with a white background indicates an information field common to component carriers, and a field with a background dot indicates an information field specific to each component carrier.
- an RBA field, an MCS field, a TPC command field for PUSCH, and an SRS request field are further included in an information field common to component carriers.
- an RBA field, an MCS field, a TPC command field for PUSCH, and an SRS request field are further included in an information field common to component carriers.
- Control example Next, an example of control when a new DCI format is applied will be described.
- the user terminal is set to cross carrier scheduling by higher layer signaling.
- the user terminal is simultaneously notified of the scheduling source and scheduling destination component carriers in the cross carrier scheduling.
- the user terminal may determine that the new DCI format is applied by higher layer signaling, may determine based on the number of component carriers, or may determine based on the serving cell index or secondary cell index. Also good. For example, the user terminal may determine that group DCI is used in cross-carrier scheduling exceeding a predetermined number of component carriers (for example, 5). The user terminal may determine to use the group DCI when the serving cell index (ServCellIndex) or the secondary cell index (SCellIndex) is 5 or more. That is, the user terminal may use the group DCI only for the component carriers whose cell index is 5 or later, and apply the existing cross carrier scheduling for the component carriers whose cell index is 4 or less.
- serving cell index Serving CellIndex
- SCellIndex secondary cell index
- the User terminal performs blind decoding of group DCI sent on PDCCH or EPDCCH.
- the number of trials of blind decoding is not proportional to the number of component carriers included in the group DCI, and the number of trials for each aggregation level is determined for each group DCI.
- the number of blind decoding attempts is increased in proportion to the number.
- the search space which is an area for which blind decoding is attempted, may be moved for each group DCI for different cell groups.
- the start position of the search space is expressed by the following equation (1).
- N CI in equation (1) is replaced by the cell group index.
- FIG. 6 is a schematic configuration diagram illustrating an example of a wireless communication system according to the present embodiment.
- carrier aggregation and / or dual connectivity in which a plurality of basic frequency blocks (component carriers) having the system bandwidth of the LTE system as one unit are integrated can be applied.
- the radio communication system 1 is in a cell formed by a plurality of radio base stations 10 (11 and 12) and each radio base station 10, and is configured to be able to communicate with each radio base station 10.
- Each of the radio base stations 10 is connected to the higher station apparatus 30 and connected to the core network 40 via the higher station apparatus 30.
- the radio base station 11 is composed of, for example, a macro base station having a relatively wide coverage, and forms a macro cell C1.
- the radio base station 12 is configured by a small base station having local coverage, and forms a small cell C2.
- the number of radio base stations 11 and 12 is not limited to the number shown in FIG.
- the macro cell C1 may be operated in the license band and the small cell C2 may be operated in the unlicensed band.
- a part of the small cell C2 may be operated in the unlicensed band, and the remaining small cells C2 may be operated in the license band.
- the radio base stations 11 and 12 are connected to each other via an inter-base station interface (for example, optical fiber, X2 interface).
- 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 that use different frequencies simultaneously by carrier aggregation or dual connectivity.
- the upper station apparatus 30 includes, for example, an access gateway apparatus, 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
- a downlink shared channel (PDSCH: Physical Downlink Shared Channel) shared by each user terminal 20, a downlink control channel (PDCCH: Physical Downlink Control Channel, EPDCCH: Enhanced PDCCH), broadcast A channel (PBCH: Physical Broadcast Channel) or the like is used.
- PDSCH Physical Downlink Shared Channel
- EPDCCH Physical Downlink Control Channel
- PBCH Physical Broadcast Channel
- DCI Downlink Control Information
- an uplink shared channel (PUSCH: Physical Uplink Shared Channel) shared by each user terminal 20, an uplink control channel (PUCCH: Physical Uplink Control Channel), or the like is used as an uplink channel.
- PUSCH Physical Uplink Shared Channel
- PUCCH Physical Uplink Control Channel
- User data and higher layer control information are transmitted by PUSCH.
- FIG. 7 is an overall configuration diagram of the radio base station 10 according to the present embodiment.
- the radio base station 10 includes a plurality of transmission / reception antennas 101 for MIMO (Multiple-input and Multiple-output) transmission, an amplifier unit 102, a transmission / reception unit (transmission unit and reception unit) 103, A baseband signal processing unit 104, a call processing unit 105, and an interface unit 106.
- MIMO Multiple-input and Multiple-output
- 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 interface unit 106.
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- MAC Medium Access Control
- HARQ Hybrid Automatic Repeat Request
- IFFT inverse fast Fourier transform
- Each transmission / reception unit 103 converts the downlink signal output from the baseband signal processing unit 104 by precoding for each antenna to a radio frequency band.
- the amplifier unit 102 amplifies the frequency-converted radio frequency signal and transmits the amplified signal using the transmission / reception antenna 101.
- the transmitter / receiver 103, a transmitter / receiver, a transmitter / receiver circuit, or a transmitter / receiver described based on common recognition in the technical field according to the present invention can be applied.
- Each transmission / reception section 103 includes scheduling control information for a plurality of component carriers, and includes a downlink control channel (PDCCH or EPDCCH) including a group DCI composed of information fields common to the plurality of component carriers and information fields specific to each component carrier. ).
- a downlink control channel (PDCCH or EPDCCH) including a group DCI composed of information fields common to the plurality of component carriers and information fields specific to each component carrier.
- the radio frequency signal received by each transmission / reception antenna 101 is amplified by the amplifier unit 102, frequency-converted by each transmission / reception unit 103, converted into a baseband signal, and input 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 interface unit 106.
- the call processing unit 105 performs call processing such as communication channel setting and release, state management of the radio base station 10, and radio resource management.
- the interface unit 106 transmits / receives a signal (backhaul signaling) to / from an adjacent radio base station via an inter-base station interface (for example, optical fiber, X2 interface). Alternatively, the interface unit 106 transmits and receives signals to and from the higher station apparatus 30 via a predetermined interface.
- a signal backhaul signaling
- inter-base station interface for example, optical fiber, X2 interface
- FIG. 8 is a main functional configuration diagram of the baseband signal processing unit 104 included in the radio base station 10 according to the present embodiment.
- the baseband signal processing unit 104 included in the radio base station 10 includes at least a control unit 301, a transmission signal generation unit 302, a mapping unit 303, and a reception signal processing unit 304. Has been.
- the control unit 301 controls scheduling of downlink user data transmitted on the PDSCH, downlink control information transmitted on both or either of the PDCCH and the extended PDCCH (EPDCCH), downlink reference signals, and the like. In addition, the control unit 301 also performs scheduling control (allocation control) of an RA preamble transmitted on the PRACH, uplink data transmitted on the PUSCH, uplink control information transmitted on the PUCCH or PUSCH, and uplink reference signals. Information related to allocation control of uplink signals (uplink control signals, uplink user data) is notified to the user terminal 20 using downlink control signals (DCI).
- DCI downlink control signals
- the control unit 301 controls allocation of radio resources to the downlink signal and the uplink signal based on the instruction information from the higher station apparatus 30 and the feedback information from each user terminal 20. That is, the control unit 301 has a function as a scheduler. A controller, a control circuit, or a control device described based on common recognition in the technical field according to the present invention can be applied to the control unit 301.
- the transmission signal generation unit 302 generates a downlink signal based on an instruction from the control unit 301 and outputs it to the mapping unit 303. For example, based on an instruction from the control unit 301, the transmission signal generation unit 302 generates a downlink assignment for notifying downlink signal allocation information and an uplink grant for notifying uplink signal allocation information. Further, 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) 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.
- a mapper, a mapping circuit, or a mapping device described based on common recognition in the technical field according to the present invention can be applied.
- Received signal processing section 304 receives UL signals transmitted from user terminals (for example, acknowledgment signals (HARQ-ACK), data signals transmitted on PUSCH, random access preambles transmitted on PRACH, etc.). Processing (for example, demapping, demodulation, decoding, etc.) is performed. The processing result is output to the control unit 301.
- the received signal processing unit 304 may measure received power (for example, RSRP (Reference Signal Received Power)), received quality (RSRQ (Reference Signal Received Quality)), channel state, and the like using the received signal. The measurement result may be output to the control unit 301.
- a signal processor, a signal processing circuit, or a signal processing device, and a measuring device, a measurement circuit, or a measurement device described based on common recognition in the technical field according to the present invention can be applied.
- FIG. 9 is an overall configuration diagram of the user terminal 20 according to the present embodiment.
- the user terminal 20 includes a plurality of transmission / reception antennas 201 for MIMO transmission, an amplifier unit 202, a transmission / reception unit (transmission unit and reception unit) 203, a baseband signal processing unit 204, an application Unit 205.
- the radio frequency signal received by the transmission / reception antenna 201 is amplified by the amplifier unit 202, frequency-converted by the transmission / reception unit 203, and converted into a baseband signal.
- the baseband signal is subjected to FFT processing, error correction decoding, retransmission control reception processing, and the like by the baseband signal processing unit 204.
- 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.
- broadcast information in the downlink data is also transferred to the application unit 205.
- the transmitter / receiver 203 may be a transmitter / receiver, a transmitter / receiver circuit, or a transmitter / receiver described based on common recognition in the technical field according to the present invention.
- Uplink user data is input from the application unit 205 to the baseband signal processing unit 204.
- the baseband signal processing unit 204 performs retransmission control (HARQ) transmission processing, channel coding, precoding, discrete Fourier transform (DFT) processing, inverse fast Fourier transform (IFFT) processing, and the like, and performs transmission and reception units 203.
- HARQ retransmission control
- DFT discrete Fourier transform
- IFFT inverse fast Fourier transform
- the transmission / reception unit 203 converts the baseband signal output from the baseband signal processing unit 204 into a radio frequency band.
- the amplifier unit 202 amplifies the frequency-converted radio frequency signal and transmits the amplified signal using the transmission / reception antenna 201.
- FIG. 10 is a main functional configuration diagram of the baseband signal processing unit 204 included in the user terminal 20.
- FIG. 10 mainly shows functional blocks of characteristic portions in the present embodiment, and 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, and a reception signal processing unit 404. ing.
- the control unit 401 acquires, from the received signal processing unit 404, a downlink control signal (a signal transmitted by PDCCH / EPDCCH) and a downlink data signal (a signal transmitted by PDSCH) transmitted from the radio base station 10.
- the control unit 401 generates an uplink control signal (for example, an acknowledgment signal (HARQ-ACK)) or an uplink data signal based on a downlink control signal, a result of determining whether retransmission control is required for the downlink data signal, or the like.
- HARQ-ACK acknowledgment signal
- the control unit 401 controls the transmission signal generation unit 402 and the mapping unit 403.
- the control unit 401 detects the group DCI by blind decoding the downlink control signal (downlink control channel).
- the transmission signal generation unit 402 generates an uplink signal based on an instruction from the control unit 401 and outputs the uplink signal to the mapping unit 403. For example, the transmission signal generation unit 402 generates an uplink control signal such as a delivery confirmation signal (HARQ-ACK) or channel state information (CSI) based on an instruction from the control unit 401.
- the transmission signal generation unit 402 generates an uplink data signal based on an instruction from the control unit 401.
- the transmission signal generation unit 402 is instructed by the control unit 401 to generate an uplink data signal when the downlink control signal notified from the radio base station 10 includes an uplink grant.
- a signal generator or a signal generation circuit described based on common recognition in the technical field according to the present invention can be applied to the transmission signal generation unit 402.
- 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.
- a mapper, a mapping circuit, or a mapping device described based on common recognition in the technical field according to the present invention can be applied.
- Reception signal processing section 404 performs reception processing (for example, demapping, demodulation, decoding, etc.) on downlink signals (for example, downlink control signals transmitted from radio base stations, downlink data signals transmitted by PDSCH, etc.). )I do.
- the reception signal processing unit 404 outputs information received from the radio base station 10 to the control unit 401.
- Reception signal processing section 404 outputs, for example, broadcast information, system information, paging information, RRC signaling, DCI, and the like to control section 401.
- the received signal processing unit 404 may measure received power (RSRP), received quality (RSRQ), channel state, and the like using the received signal.
- the measurement result may be output to the control unit 401.
- the received signal processing unit 404 can be applied to a signal processor, a signal processing circuit or a signal processing device, and a measuring device, a measuring circuit or a measuring device which are described based on common recognition in the technical field according to the present invention.
- the block diagram used in the description of the above embodiment shows functional unit blocks. These functional blocks (components) are realized by any combination of hardware and software.
- the means for realizing each functional block is not particularly limited. Each functional block may be realized by one physically coupled device, or may be realized by two or more devices physically connected to each other by wired or wireless connection.
- radio base station 10 and the user terminal 20 are realized using hardware such as ASIC (Application Specific Integrated Circuit), PLD (Programmable Logic Device), and FPGA (Field Programmable Gate Array). May be.
- the radio base station 10 and the user terminal 20 may be realized by a computer device including a processor (CPU), a communication interface for network connection, a memory, and a computer-readable storage medium holding a program.
- the computer-readable recording medium is a storage medium such as a flexible disk, a magneto-optical disk, a ROM, an EPROM, a CD-ROM, a RAM, and a hard disk.
- the program may be transmitted from the network via a telecommunication line.
- the radio base station 10 and the user terminal 20 may include an input device such as an input key and an output device such as a display.
- the functional configurations of the radio base station 10 and the user terminal 20 may be realized by the hardware described above, may be realized by a software module executed by a processor, or may be realized by a combination of both.
- the processor controls the entire user terminal by operating an operating system.
- the processor reads programs, software modules, and data from the storage medium into the memory, and executes various processes according to these.
- the program may be a program that causes a computer to execute the operations described in the above embodiments.
- the control unit 401 of the user terminal 20 may be realized by a control program stored in a memory and operated by a processor, and may be realized similarly for other functional blocks.
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Abstract
Description
LTE Rel.13において、ユーザ端末あたりに設定可能なコンポーネントキャリア数の制限をなくした拡張キャリアアグリゲーションが検討されている。拡張アグリゲーションでは、たとえば最大32個のコンポーネントキャリアを束ねることが検討されている。拡張キャリアアグリゲーションにより、より柔軟かつ高速な無線通信が実現される。また、拡張キャリアアグリゲーションにより、連続する超広帯域の多数のコンポーネントキャリアを束ねることができる。
従来、クロスキャリアスケジューリングを適用する場合に、各DCIに含まれる3ビットのCIFによりスケジューリングされるセルのインデックスを通知していた。
従来、DCIフォーマット1AとDCIフォーマット0とは同一ペイロードのため、ユーザ端末は、DCIに含まれるFlagビットの値により、検出したDCIがどちらのフォーマットか識別していた。
従来、下りリンクアサインメントに含まれるSRSリクエストフィールドは、PUCCH送信セルのSRS送信をトリガするビットとして、また、上りリンクグラントに含まれるSRSリクエストフィールドは、PUSCHを割り当てたセルのSRS送信をトリガするビットとして解釈されてきた。
従来、下りリンクアサインメントに含まれるTPCコマンドフィールドは、PUCCH送信セルのPUCCH送信電力を制御するビットとして、また、上りリンクグラントに含まれるTPCコマンドフィールドは、PUSCHを割り当てたセルのPUSCH/SRS送信電力を制御するビットとして解釈されてきた。
従来、TDDでは、UL-DL構成#0の場合を除き、各下りリンクDCIおよび上りリンクDCIにDAIが挿入されていた。UL-DL構成#0の場合は、DAIは用いられず、上りリンクインデックスが用いられていた。なお、DAIはTDDの場合のみ存在し、FDD(Frequency Division Duplex)の場合は存在しない。
従来、CSIリクエストフィールドは、CSI報告をトリガするために用いるビットであり、ユーザ端末は当該トリガにより1つまたは複数のCSIをPUSCHで送信していいた。
グループDCIのトータルのペイロードは、一般にコンポーネントキャリア数が増えるほど大きくなる。多数のコンポーネントキャリアをキャリアアグリゲーションする状況では、コンポーネントキャリア個別の細かいスケジューリング制御よりも、広い帯域を束ねて一気に通信することによるスループット増大が重要である。したがって、スケジューリング制御を粗くすることで、さらにグループDCIのトータルのペイロードを減らすことが可能となる。
続いて、新しいDCIフォーマットを適用する場合の制御例について説明する。ユーザ端末は、上位レイヤシグナリングによりクロスキャリアスケジューリングを設定される。ユーザ端末には、同時に、クロスキャリアスケジューリングにおけるスケジューリング元およびスケジューリング先のコンポーネントキャリアが通知される。
以下、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、上述のグループDCIを用いる無線通信方法が適用される。
Claims (10)
- 6個以上のコンポーネントキャリアを利用して無線基地局と通信可能なユーザ端末であって、
複数のコンポーネントキャリアに対するスケジューリング制御情報を含み、複数のコンポーネントキャリア共通の情報フィールドと各コンポーネントキャリア固有の情報フィールドとから構成されるグループDCI(Downlink Control Information)を含む下りリンク制御チャネルを受信する受信部を有することを特徴とするユーザ端末。 - 前記グループDCIが、前記複数のコンポーネントキャリア共通の情報フィールドにCIF(Carrier Indicator Field)フィールドを含み、
前記CIFフィールドの値が、前記グループDCIが割り当てを行うセルグループのインデックスを指定することを特徴とする請求項1に記載のユーザ端末。 - 前記グループDCIが、前記複数のコンポーネントキャリア共通の情報フィールドにFlagフィールドを含み、
前記Flagフィールドの値が、前記グループDCIに含まれるすべてのコンポーネントキャリアのスケジューリング情報が下りリンクアサインメントか上りリンクグラントかを指定することを特徴とする請求項1に記載のユーザ端末。 - 前記グループDCIが下りリンクアサインメントを送信する場合、前記複数のコンポーネントキャリア共通の情報フィールドにSRS(Sounding Reference Signal)リクエストフィールドを含み、
前記グループDCIが上りリンクグラントを送信する場合、前記各コンポーネントキャリア固有の情報フィールドにSRSリクエストフィールドを含むことを特徴とする請求項1に記載のユーザ端末。 - 前記グループDCIが下りリンクアサインメントを送信する場合、前記複数のコンポーネントキャリア共通の情報フィールドにTPC(Transmission Power Control)コマンドフィールドを含み、
前記グループDCIが上りリンクグラントを送信する場合、前記各コンポーネントキャリア固有の情報フィールドにTPCコマンドフィールドを含むことを特徴とする請求項1に記載のユーザ端末。 - 前記グループDCIが、前記複数のコンポーネントキャリア共通の情報フィールドにDAI(Downlink Assignment Index)フィールドを含むことを特徴とする請求項1に記載のユーザ端末。
- 前記グループDCIが、前記複数のコンポーネントキャリア共通の情報フィールドにCSI(Channel State Information)リクエストフィールドを含むことを特徴とする請求項1に記載のユーザ端末。
- 6個以上のコンポーネントキャリアを利用してユーザ端末と通信可能な無線基地局であって、
複数のコンポーネントキャリアに対するスケジューリング制御情報を含み、複数のコンポーネントキャリア共通の情報フィールドと各コンポーネントキャリア固有の情報フィールドとから構成されるグループDCI(Downlink Control Information)を含む下りリンク制御チャネルを送信する送信部を有することを特徴とする無線基地局。 - 6個以上のコンポーネントキャリアを利用して通信を行う無線基地局とユーザ端末とを有する無線通信システムであって、
前記無線基地局は、
複数のコンポーネントキャリアに対するスケジューリング制御情報を含み、複数のコンポーネントキャリア共通の情報フィールドと各コンポーネントキャリア固有の情報フィールドとから構成されるグループDCI(Downlink Control Information)を含む下りリンク制御チャネルを送信する送信部を有し、
前記ユーザ端末は、
前記下りリンク制御チャネルを受信する受信部と、
前記下りリンク制御チャネルをブラインド復号して前記グループDCIを検出する制御部と、を有することを特徴とする無線通信システム。 - 6個以上のコンポーネントキャリアを利用して無線基地局と通信可能なユーザ端末の無線通信方法であって、
複数のコンポーネントキャリアに対するスケジューリング制御情報を含み、複数のコンポーネントキャリア共通の情報フィールドと各コンポーネントキャリア固有の情報フィールドとから構成されるグループDCI(Downlink Control Information)を含む下りリンク制御チャネルを受信する工程を有することを特徴とする無線通信方法。
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019084928A1 (zh) * | 2017-11-03 | 2019-05-09 | Oppo广东移动通信有限公司 | 无线通信方法和设备 |
WO2020008647A1 (ja) * | 2018-07-06 | 2020-01-09 | 株式会社Nttドコモ | ユーザ端末 |
WO2021140671A1 (ja) * | 2020-01-10 | 2021-07-15 | 株式会社Nttドコモ | 端末及び通信方法 |
JP2022522207A (ja) * | 2019-02-27 | 2022-04-14 | 維沃移動通信有限公司 | 伝送リソース指示方法、伝送方法、ネットワーク機器及び端末 |
US11540300B2 (en) | 2017-09-08 | 2022-12-27 | Huawei Technologies Co., Ltd. | Method and apparatus for transmission of group common PDCCHs |
JP2023514276A (ja) * | 2020-02-12 | 2023-04-05 | 北京紫光展鋭通信技術有限公司 | ダウンリンク制御情報を認識する方法及び装置 |
JP2023515836A (ja) * | 2020-04-13 | 2023-04-14 | 維沃移動通信有限公司 | リソース決定方法、リソース指示方法及び通信機器 |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113271132A (zh) * | 2015-08-12 | 2021-08-17 | 苹果公司 | 多用户多输入多输出通信系统和方法 |
US11032850B2 (en) | 2016-09-30 | 2021-06-08 | Qualcomm Incorporated | PRACH and/or SRS switching enhancements |
US10505697B2 (en) | 2016-11-03 | 2019-12-10 | At&T Intellectual Property I, L.P. | Facilitating a mobile device specific physical downlink shared channel resource element mapping indicator |
CN108401303B (zh) * | 2017-02-04 | 2021-07-20 | 华为技术有限公司 | 终端、网络设备和通信方法 |
US10091777B1 (en) | 2017-03-31 | 2018-10-02 | At&T Intellectual Property I, L.P. | Facilitating physical downlink shared channel resource element mapping indicator |
US20200029317A1 (en) * | 2018-07-20 | 2020-01-23 | Qualcomm Incorporated | Multi-carrier scheduling and search space activation |
US11212062B2 (en) * | 2018-09-28 | 2021-12-28 | Qualcomm Incorporated | Limits on quantity of downlink control information (DCI) processed |
US11178655B2 (en) * | 2018-11-13 | 2021-11-16 | Qualcomm Incorporated | Physical downlink control channel limit for dual connectivity |
US20220086882A1 (en) * | 2019-01-11 | 2022-03-17 | Ntt Docomo, Inc. | User terminal and radio communication method |
WO2020161912A1 (ja) * | 2019-02-08 | 2020-08-13 | 株式会社Nttドコモ | ネットワークノード |
US11743886B2 (en) * | 2019-08-16 | 2023-08-29 | Qualcomm Incorporated | Downlink (DL) hybrid automatic request (HARQ) timing and uplink shared channel scheduling timing |
CN113162737B (zh) * | 2020-01-22 | 2023-06-27 | 维沃移动通信有限公司 | Csi传输方法、csi传输控制方法、终端和网络侧设备 |
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US11792812B2 (en) * | 2020-04-02 | 2023-10-17 | Qualcomm Incorporated | Search space configurations for multi-component carrier scheduling |
CN113543321B (zh) * | 2020-04-15 | 2024-04-05 | 大唐移动通信设备有限公司 | Harq-ack反馈时序的确定方法及设备 |
US11706774B2 (en) | 2020-06-24 | 2023-07-18 | Qualcomm Incorporated | Downlink control information for scheduling multiple component carriers |
US20220046688A1 (en) * | 2020-08-06 | 2022-02-10 | Lg Electronics Inc. | Method and apparatus for transmitting/receiving wireless signal in wireless communication system |
BR112023002325A2 (pt) * | 2020-08-07 | 2023-03-21 | Lenovo Beijing Ltd | Método e aparelho para alocação de recursos para agregação de portadora |
CN117528786A (zh) * | 2022-08-03 | 2024-02-06 | 大唐移动通信设备有限公司 | 一种pdcch候选的频域位置确定方法及终端 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011530964A (ja) * | 2008-08-11 | 2011-12-22 | クゥアルコム・インコーポレイテッド | マルチキャリアワイヤレス通信システムにおけるダウンリンク認可 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014038886A1 (en) * | 2012-09-06 | 2014-03-13 | Samsung Electronics Co., Ltd. | Method and apparatus for communicating downlink control information in an asymmetric multicarrier communication network environment |
US10419168B2 (en) * | 2012-12-18 | 2019-09-17 | Lg Electronics Inc. | Method and apparatus for transmitting downlink control information in wireless communication system |
US10397908B2 (en) * | 2013-09-27 | 2019-08-27 | Lg Electronics Inc. | Method and apparatus for decoding downlink control information by terminal in wireless communication system |
-
2016
- 2016-04-08 CN CN201680020859.6A patent/CN107432018A/zh active Pending
- 2016-04-08 US US15/564,745 patent/US20180115965A1/en not_active Abandoned
- 2016-04-08 WO PCT/JP2016/061498 patent/WO2016163503A1/ja active Application Filing
- 2016-04-08 JP JP2017511082A patent/JPWO2016163503A1/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011530964A (ja) * | 2008-08-11 | 2011-12-22 | クゥアルコム・インコーポレイテッド | マルチキャリアワイヤレス通信システムにおけるダウンリンク認可 |
Non-Patent Citations (1)
Title |
---|
NOKIA CORPORATION ET AL.: "New WI proposal: LTE Carrier Aggregation Enhancement Beyond 5 Carriers", 3GPP TSG RAN MEETING #66 RP-142286, 12 December 2014 (2014-12-12), pages 1 - 9, XP050900256 * |
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US11337243B2 (en) | 2017-11-03 | 2022-05-17 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Wireless communication method and device for configuring available resources |
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