WO2020054693A1 - 端末装置 - Google Patents
端末装置 Download PDFInfo
- Publication number
- WO2020054693A1 WO2020054693A1 PCT/JP2019/035470 JP2019035470W WO2020054693A1 WO 2020054693 A1 WO2020054693 A1 WO 2020054693A1 JP 2019035470 W JP2019035470 W JP 2019035470W WO 2020054693 A1 WO2020054693 A1 WO 2020054693A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- transmission
- grant
- uplink
- terminal device
- information
- Prior art date
Links
Images
Classifications
-
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0072—Error control for data other than payload data, e.g. control data
- H04L1/0073—Special arrangements for feedback channel
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
- H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
Definitions
- the present invention relates to a terminal device.
- This application claims priority based on Japanese Patent Application No. 2018-169582 for which it applied to Japan on September 11, 2018, and uses the content here.
- the fifth generation mobile communication system 5G: 5th Generation mobile telecommunications systems
- MTC massive Machine Type Communications
- ULC ultra-high reliability and low delay communication
- eMBB enhanced Mobile Broadband
- 3GPP 3rd Generation Partnership Project
- NR New Radio
- MA Multiple Access
- a terminal device uses a random access procedure (Random Access Procedure) or scheduling.
- a request (SR: Scheduling Request) or the like is used to request a base station apparatus (BS: also called Base Station, eNB: evolved Node B) for a radio resource for transmitting uplink data.
- the base station apparatus gives an uplink transmission permission (UL @ Grant) to each terminal apparatus based on the SR.
- the terminal apparatus Upon receiving the UL @ Grant of the control information from the base station apparatus, the terminal apparatus transmits uplink data using predetermined radio resources based on uplink transmission parameters included in the UL @ Grant (Scheduled access, grant- base @ access, called transmission by dynamic scheduling, hereinafter referred to as scheduled access).
- the base station device controls all uplink data transmissions (the base station device grasps the radio resources of the uplink data transmitted by each terminal device).
- an orthogonal multiple access (OMA: Orthogonal Multiple Access) can be realized by controlling an uplink radio resource by a base station apparatus.
- the problem with the $ 5G mMTC is that the amount of control information increases when scheduled access is used.
- the URLLC there is a problem that the use of the scheduled access increases the delay. Accordingly, the terminal device does not perform a random access procedure or SR transmission, and grants free access (grant free access, grant less access, contention-based access, autonomous access, resource allocation, etc.) that performs data transmission without performing UL grant reception or the like.
- Uplink transmission management with grant, configured grant type 1 transmission, etc. hereinafter referred to as grant-free access
- SPS Semi-persistent scheduling
- BWP Bandwidth @ Part
- eMBB can use a wideband BWP
- mMTC can use a narrowband BWP
- URLLC can use a BWP with a wide subcarrier interval (short OFDM symbol length).
- BWP can be dynamically switched by DCI formats 0_1 and 1_1.
- One aspect of the present invention has been made in view of such circumstances, and a purpose thereof is to set a plurality of configured uplink grants for grant-free access in one serving cell or one BWP, and to transmit those grants.
- An object of the present invention is to provide a base station device, a terminal device, and a communication method that enable normal transmission of uplink data even when resource contention occurs.
- configurations of a base station device, a terminal device, and a communication method according to one embodiment of the present invention are as follows.
- the present invention has been made to solve the above-described problem, and is a terminal device of a communication system including at least a base station device and a terminal device according to an aspect of the present invention, and performs uplink according to an RRC message from the RRC.
- a control unit configured to perform link data transmission setting; and a transmission unit configured to transmit uplink data according to the uplink data transmission setting, wherein the RRC message includes at least a first and a second configured uplink grant for each BWP.
- a plurality of configured uplink grant setting information wherein the plurality of configured uplink grant setting information includes first and second configured uplink grant transmission section setting information; , A plurality of configured uplink grant configuration information for each BWP included in the RRC message Accordingly, a plurality of configured uplink grants are set for each BWP, and the transmitting unit, if at least a part of each of the transmission sections of the first and second configured uplink grants overlaps, sets the first and second configured uplink grants.
- the present invention is characterized in that one of the uplink data transmissions by the second configured uplink grant is interrupted and the other uplink data transmission is performed.
- the terminal device is the terminal device described above, wherein the transmitting unit interrupts any one of the uplink data transmissions by the first and second configured uplink grants. Then, after the other uplink data transmission is completed, the suspended uplink data transmission is restarted.
- the terminal device is the terminal device described above, wherein the transmitting unit resumes the uplink data transmission based on the interrupted configured uplink grant, and then performs the interrupted configuration.
- the uplink data transmission is performed until the transmission section of the completed uplink grant ends.
- the terminal device is the terminal device described above, wherein the transmitting unit resumes the uplink data transmission using the interrupted configured uplink grant, and then transmits the configured uplink data.
- the transmission of the uplink data is performed until the number of repeated transmissions of the link grant is reached.
- the terminal device is the terminal device described above, wherein the control unit is configured to control at least a part of each of the transmission sections of the first and second configured uplink grants.
- overlap which is to be interrupted is determined by the configuration information of the plurality of configured uplink grants included in the RRC message, the transmission unit, according to the order determined by the control unit, the transmission unit, Either the first or second configured uplink grant is interrupted for uplink data transmission.
- the terminal device is the terminal device described above, wherein the control unit is configured to perform the control according to a parameter such as an MCS table configuration included in the configuration information of the plurality of configured uplink grants. The order is determined.
- a parameter such as an MCS table configuration included in the configuration information of the plurality of configured uplink grants. The order is determined.
- the terminal device is the terminal device described above, wherein the control unit determines the order according to a setting order of the configuration information of the plurality of configured uplink grants.
- the terminal device is the terminal device described above, wherein the control unit is configured to control the priority based on the priority included in the configuration information of the plurality of configured uplink grants. Determine the order.
- a plurality of configured uplink grants for grant-free access are set in one serving cell or one BWP, and transmission of uplink data is performed even when contention for those transmission resources occurs. Can be performed normally.
- FIG. 1 is a diagram illustrating an example of a communication system according to a first embodiment.
- FIG. 2 is a diagram illustrating an example of a radio frame configuration of the communication system according to the first embodiment.
- FIG. 2 is a schematic block diagram illustrating an example of a configuration of a base station device 10 according to the first embodiment.
- FIG. 3 is a diagram illustrating an example of a signal detection unit according to the first embodiment.
- FIG. 2 is a schematic block diagram illustrating an example of a configuration of a terminal device 20 according to the first embodiment.
- FIG. 3 is a diagram illustrating an example of a signal detection unit according to the first embodiment.
- FIG. 4 is a diagram illustrating an example of a sequence chart of uplink data transmission in dynamic scheduling.
- FIG. 4 is a diagram illustrating an example of a sequence chart of uplink data transmission in dynamic scheduling.
- FIG. 3 is a diagram illustrating an example of a configuration of an RRC message according to the first embodiment.
- FIG. 6 is a diagram illustrating an example of transmission opportunity allocation of a plurality of configured uplink grants according to the first embodiment.
- FIG. 14 is a diagram illustrating an example of transmission opportunity allocation of a plurality of configured uplink grants according to the second embodiment.
- FIG. 15 is a diagram illustrating an example of transmission opportunity allocation of a plurality of configured uplink grants according to the third embodiment.
- FIG. 17 is a diagram illustrating an example of transmission opportunity allocation of a plurality of configured uplink grants according to the fourth embodiment. It is a figure showing an example of transmission opportunity allocation of a plurality of constituted uplink grants concerning a 5th embodiment.
- FIG. 25 is a diagram illustrating an example of transmission opportunity allocation of a plurality of configured uplink grants according to the sixth embodiment.
- FIG. 25 is a diagram illustrating an example of a method for determining a length of a transmission opportunity of a configured uplink grant according to the seventh embodiment.
- FIG. 25 is a diagram illustrating an example of a method for determining a length of a transmission opportunity of a configured uplink grant according to the seventh embodiment.
- FIG. 25 is a diagram illustrating an example of a method for determining a length of a transmission opportunity of a configured uplink grant according to the seventh embodiment.
- FIG. 25 is a diagram illustrating an example of a method for determining a length of a transmission opportunity of a configured uplink grant according to the seventh embodiment.
- FIG. 25 is a diagram illustrating an example of transmission opportunity allocation of a plurality of configured uplink grants according to the seventh embodiment.
- the communication system includes a base station device (cell, small cell, pico cell, serving cell, component carrier, eNodeB (eNB), Home eNodeB, Low Power Node, Remote Radio Head, gNodeB (gNB), control station, Bandwidth). Part (BWP), also referred to as Supplementary @ Uplink (SUL)) and a terminal device (terminal, mobile terminal, mobile station, UE: also referred to as User @ Equipment).
- BWP Supplementary @ Uplink
- terminal device terminal, mobile terminal, mobile station, UE: also referred to as User @ Equipment
- the base station device in the case of downlink, the base station device becomes a transmitting device (transmitting point, transmitting antenna group, transmitting antenna port group), and the terminal device becomes a receiving device (receiving point, receiving terminal, receiving antenna group, receiving antenna port). Group).
- the base station device becomes a receiving device
- the terminal device becomes a transmitting device.
- the communication system is also applicable to D2D (Device-to-Device) communication. In that case, both the transmitting device and the receiving device are terminal devices.
- the communication system is not limited to data communication between a terminal device and a base station device in which a human intervenes, but includes MTC (Machine Type Communication), M2M communication (Machine-to-Machine Communication), and IoT (Internet of Things). ), Communication such as NB-IoT (Narrow @ Band-IoT) (hereinafter referred to as MTC), and data communication that does not require human intervention.
- MTC Machine Type Communication
- M2M communication Machine-to-Machine Communication
- IoT Internet of Things
- Communication such as NB-IoT (Narrow @ Band-IoT) (hereinafter referred to as MTC)
- MTC Network of Things
- the terminal device is an MTC terminal.
- the communication system uses DFTS-OFDM (Discrete Fourier Transform Spread) -Orthogonal Frequency Division Multiplexing, SC-FDMA (Single Carrier-Responsible for Digital Equipment Co-Response) -A multi-carrier transmission system such as ⁇ Orthogonal ⁇ Frequency ⁇ Division ⁇ Multiplexing) can be used.
- DFTS-OFDM Discrete Fourier Transform Spread
- SC-FDMA Single Carrier-Responsible for Digital Equipment Co-Response
- a multi-carrier transmission system such as ⁇ Orthogonal ⁇ Frequency ⁇ Division ⁇ Multiplexing
- the communication system includes an FBMC (Filter Bank Multi Carrier) to which a filter is applied, an f-OFDM (Filtered II-OFDM), a UF-OFDM (Universal Filtered II-OFDM), a W-OFDM (Window using OFDM), and a sparse transmission using a sparse code.
- FBMC Breast Bank Multi Carrier
- f-OFDM Frtered II-OFDM
- UF-OFDM Universal Filtered II-OFDM
- W-OFDM Window using OFDM
- sparse transmission using a sparse code a sparse code.
- SCMA Sparse Code Multiple Access
- the communication system may apply DFT precoding and use a signal waveform using the above filter.
- the communication system may perform code spreading, interleaving, sparse code, and the like in the transmission scheme. In the following, a case will be described in which at least one of DFTS-OFDM transmission and CP-OF
- the base station device and the terminal device include a so-called licensed band (licensed band), for which a license is obtained from a country or region where the wireless service provider provides services, and / or Communication is possible in a frequency band called an unlicensed band (unlicensed band) that does not require a license (license) from a country or region.
- a so-called licensed band for which a license is obtained from a country or region where the wireless service provider provides services
- an unlicensed band unlicensed band
- communication based on carrier sense for example, listen @ before @ talk system
- X / Y includes the meaning of “X or Y”. In the present embodiment, “X / Y” includes the meanings of “X and Y”. In the present embodiment, “X / Y” includes the meaning of “X and / or Y”.
- FIG. 1 is a diagram illustrating a configuration example of a communication system according to the present embodiment.
- the communication system according to the present embodiment includes a base station device 10 and terminal devices 20-1 to 20-n1 (n1 is the number of terminal devices connected to the base station device 10).
- the terminal devices 20-1 to 20-n1 are also collectively referred to as a terminal device 20.
- the coverage 10a is a range (communication area) in which the base station device 10 can connect to the terminal device 20 (also referred to as a cell).
- the wireless communication of the uplink r30 includes at least the following uplink physical channels.
- the uplink physical channel is used for transmitting information output from an upper layer.
- -Physical uplink control channel (PUCCH) -Physical uplink shared channel (PUSCH) -Physical random access channel (PRACH)
- PUCCH Physical uplink control channel
- PUSCH Physical uplink shared channel
- PRACH Physical random access channel
- PUCCH is a physical channel used to transmit uplink control information (Uplink Control Information: UCI).
- Uplink control information Downlink control information, downlink data (Downlink transport block, Medium Access Control Protocol Data Unit: MAC PDU, Downlink-Shared Channel: DL-SCH, Physical Downlink Shared Channel: PDSCH) acknowledgment of (positive acknowledgement: ACK) / Includes a negative acknowledgment (Negative acknowledgment: NACK).
- the ACK / NACK is also referred to as HARQ-ACK (Hybrid Automatic Repeat Repeat request ACKnowledgement), HARQ feedback, HARQ response, or HARQ control information, and a signal indicating transmission confirmation.
- HARQ-ACK Hybrid Automatic Repeat Repeat request ACKnowledgement
- the uplink control information includes a scheduling request (Scheduling Request: SR) used to request a PUSCH (Uplink-Shared Channel: UL-SCH) resource for initial transmission.
- the scheduling request includes a positive scheduling request (positive @ scheduling @ request) or a negative scheduling request (negative @ scheduling @ request).
- a positive scheduling request indicates requesting UL-SCH resources for initial transmission.
- a negative scheduling request indicates that no UL-SCH resources are required for the initial transmission.
- the uplink control information includes downlink channel state information (Channel State Information: CSI).
- the downlink channel state information includes: a rank indicator (Rank Indicator: RI) indicating a suitable number of spatial multiplexing (number of layers); a precoding matrix indicator (Precoding Matrix Indicator: PMI) indicating a suitable precoder; Channel quality indicator (Channel CQI) or the like.
- the PMI indicates a codebook determined by the terminal device.
- the codebook relates to precoding of a physical downlink shared channel.
- the CQI As the CQI, a suitable modulation scheme (for example, QPSK, 16 QAM, 64 QAM, 256 QAM, etc.) in a predetermined band, a coding rate (coding rate), and an index (CQI index) indicating frequency use efficiency can be used.
- the terminal device selects, from the CQI table, a CQI index that can be received by the PDSCH transport block without exceeding a predetermined block error probability (for example, an error rate of 0.1).
- the terminal device may have a plurality of predetermined error probabilities (error rates) for the transport block. For example, the error rate of eMBB data may target 0.1, and the error rate of URLLC may target 0.00001.
- the terminal device may perform CSI feedback for each target error rate (transport block error rate) when set in an upper layer (for example, setup by RRC signaling from a base station), or a plurality of targets in an upper layer.
- CSI feedback of the set target error rate may be performed when one of the error rates is set in the upper layer.
- the error rate for the eMBB e.g., whether the error rate is set by the RRC signaling or not
- the CSI may be calculated based on an error rate other than 0.1).
- PUCCH defines PUCCH formats 0 to 4, PUCCH formats 0 and 2 are transmitted with 1-2 OFDM symbols, and PUCCH formats 1, 3, and 4 are transmitted with 4 to 14 OFDM symbols.
- PUCCH formats 0 and 1 are used for notification of 2 bits or less, and can notify only HARQ-ACK, only SR, or HARQ-ACK and SR simultaneously.
- PUCCH formats 1, 3, and 4 are used for reporting more than two bits, and can simultaneously report HARQ-ACK, SR, and CSI.
- the number of OFDM symbols used for PUCCH transmission is set in an upper layer (for example, setup by RRC signaling). Which PUCCH format is used depends on the timing (slot, OFDM symbol) for transmitting PUCCH, and determines whether to use SR transmission or the like. It depends on whether or not there is CSI transmission.
- PUCCH-config which is PUCCH configuration information (configuration), information on whether to use PUCCH formats 1 to 4, PUCCH resources (starting physical resource block, PRB-Id), and PUCCH format association information that can be used in each PUCCH resource , Intra-slot hopping setting, and SchedulingRequestResourceConfig, which is setting information of the SR.
- the setting information of the SR includes a scheduling request ID, a cycle and an offset of the scheduling request, and information of a PUCCH resource to be used.
- the scheduling request ID is used for associating the SR prohibition timer set in the SchedulingRequestConfig in the MAC-CellGroupConfig, the maximum number of transmissions of the SR, and the setting.
- PUSCH is a physical channel used to transmit uplink data (UplinklTransport Block, Uplink-Shared Channel: UL-SCH).
- the PUSCH may be used to transmit HARQ-ACK and / or channel state information for downlink data along with the uplink data.
- PUSCH may be used to transmit only channel state information.
- PUSCH may be used to transmit only HARQ-ACK and channel state information.
- the PUSCH is used for transmitting radio resource control (Radio Resource Control: RRC) signaling.
- RRC signaling is also referred to as RRC message / RRC layer information / RRC layer signal / RRC layer parameter / RRC information / RRC information element.
- RRC signaling is information / signals processed in the radio resource control layer.
- RRC signaling transmitted from the base station device may be common signaling to a plurality of terminal devices in the cell.
- the RRC signaling transmitted from the base station device may be dedicated signaling (also referred to as dedicated @ signaling) for a certain terminal device. That is, user device-specific (UE-specific) information is transmitted to a certain terminal device using dedicated signaling.
- the RRC message can include the UE @ Capability of the terminal device.
- UE @ Capability is information indicating a function supported by the terminal device.
- the PUSCH is also used to transmit a MAC CE (Medium Access Control Element).
- MAC @ CE is information / signal processed (transmitted) in a medium access control layer (Medium @ Access @ Control @ layer).
- the power headroom (PH: ⁇ Power ⁇ Headroom) may be included in the MAC ⁇ CE and reported via the physical uplink shared channel. That is, the MAC @ CE field is used to indicate the power headroom level.
- Uplink data may include an RRC message, MAC @ CE.
- RRC signaling and / or MAC @ CE are also referred to as higher layer signals.
- RRC signaling and / or MAC @ CE are included in the transport block.
- the PUSCH is a dynamic scheduling (periodic periodic transmission) that performs uplink data transmission on designated radio resources based on uplink transmission parameters (for example, resource allocation in the time domain, resource allocation in the frequency domain, etc.) included in the DCI format. Wireless resource allocation).
- PUSCH includes frequency hopping by configured GrantConfig included in the RRC message, DMRS configuration, mcs table, mcs table transform precoder, uci-onPUSCH, resource allocation type, RBG size, closed loop transmission power control (powerControlLoopToUse) target, Power and ⁇ set (p0-PUSCH-Alpha), TransformPrecoder (precoder), nrof HARQ (number of HARQ processes), number of repeated transmissions of the same data (repK), repK-RV (redundancy version pattern for repeated transmission of the same data) , Configured Grant Type 1 and Type 2 After receiving a timer for NACK reception of period (Periodicity) and Configured Grant, CRC receives DCI format 0_0 / 0_1 / 1_0 / 1_1 scrambled by CS-RNTI, and further receives DCI format 0_0 / 0_1 / 1_0 DL_1 SPS (Semi-Persisten
- the field used for validation all bits of the HARQ process number and 2 bits of RV may be used.
- a field used for validation of control information of deactivated (release) of configured ⁇ grant ⁇ type2 ⁇ transmission is all bits of the HARQ process number, all bits of the MCS, all bits of the resource block assignment, two bits of the RV, and the like. May be used.
- the PUSCH is used even in a configured ⁇ grant ⁇ type1 ⁇ transition in which periodic data transmission is permitted by receiving the rrcConfiguredUplinkGrant in addition to the information of the ⁇ configured ⁇ grant ⁇ type2 ⁇ transmission by the RRC.
- the information of rrcConfiguredUplinkGrant includes time domain resource allocation, time domain offset, frequency domain resource allocation, antenna port, DMRS sequence initialization, precoding and number of layers, SRS resource indicator, mcs and TBS, frequency hopping offset, A path loss reference index may be included. Also, in the same serving cell (within the component carrier), when configured ⁇ grant ⁇ type1 ⁇ transmission and configured ⁇ type2 ⁇ grant ⁇ transmission are set, the configured ⁇ grant ⁇ type1transition may be prioritized.
- the uplink grant of configured ⁇ grant ⁇ type 1 @ transmission and the uplink grant of dynamic scheduling overlap in the time domain within the same serving cell the uplink grant of dynamic scheduling is overridden (only overriding, dynamic scheduling is used, and ⁇ configured @ grant @ type1 transmission grant may be reversed).
- a plurality of uplink grants overlap in the time domain may mean that they overlap in at least some of the OFDM symbols, and when the subcarrier intervals (SCS) are different, the OFDM symbol lengths are different. It may mean that some times in an OFDM symbol overlap.
- SCS subcarrier intervals
- the setting of configured ⁇ grant ⁇ type1 ⁇ transmission can also be set to SCells that have not been activated by RRC, and the Scell with configured ⁇ grant ⁇ type1 ⁇ transmission is set to enable the configuration of the transmission link after the activation is enabled. May be.
- PRACH is used to transmit a preamble used for random access.
- the PRACH is used to indicate an initial connection establishment (initial connection establishment) procedure, a handover procedure, a connection reestablishment procedure (connection @ re-establishment) procedure, synchronization (timing adjustment) for uplink transmission, and a request for a PUSCH (UL-SCH) resource. Used for
- an uplink reference signal (Uplink Reference Signal: UL RS) is used as an uplink physical signal.
- the uplink reference signal includes a demodulation reference signal (Demodulation Reference Signal: DMRS) and a sounding reference signal (Sounding Reference Signal: SRS).
- DMRS is related to the transmission of the physical uplink shared channel / physical uplink control channel.
- the base station apparatus 10 uses a demodulation reference signal to perform channel estimation / channel correction.
- the base station apparatus specifies the maximum number of OFDM symbols of front-loaded @ DMRS and additional setting of the DMRS symbol (DMRS-add-pos) by RRC.
- front-loaded @ DMRS is one OFDM symbol (single-symbol DMRS)
- DCI indicates how different frequency domain allocation is used in the frequency domain allocation, the value of the cyclic shift in the frequency domain, and the OFDM symbol including the DMRS.
- the front-loaded @ DMRS is 2 OFDM symbols (double symbol DMRS)
- the setting of the time spreading of length 2 is specified by DCI.
- SRS Sounding Reference Signal
- the terminal device transmits the SRS periodically or aperiodically regardless of the presence or absence of uplink data transmission.
- a terminal device transmits an SRS based on a parameter notified by a higher layer signal (for example, RRC) from a base station device.
- the terminal apparatus performs an SRS based on a parameter notified by a higher layer signal (eg, RRC) from the base station apparatus and a physical downlink control channel (eg, DCI) indicating the transmission timing of the SRS.
- Send The base station apparatus 10 uses the SRS to measure the uplink channel state (CSI @ Measurement).
- the base station apparatus 10 may perform timing alignment and closed-loop transmission power control based on the measurement result obtained by receiving the SRS.
- the following downlink physical channels are used in the wireless communication of the downlink r31.
- the downlink physical channel is used for transmitting information output from an upper layer.
- PBCH Physical broadcast channel
- PDCH Physical downlink control channel
- PDSCH Physical downlink shared channel
- the PBCH is used to broadcast a master information block (Master Information Block: MIB, Broadcast Channel: BCH) commonly used in the terminal device.
- MIB is one type of system information.
- the MIB includes a downlink transmission bandwidth setting and a system frame number (SFN: System ⁇ Frame ⁇ number).
- SFN System ⁇ Frame ⁇ number
- the MIB may include information indicating a slot number in which the PBCH is transmitted, a subframe number, and at least a part of a radio frame number.
- $ PDCCH is used to transmit downlink control information (Downlink ⁇ Control ⁇ Information: $ DCI).
- DCI Downlink ⁇ Control ⁇ Information
- the DCI format may be defined based on the type of DCI and the number of bits constituting one DCI format.
- the downlink control information includes control information for transmitting downlink data and control information for transmitting uplink data.
- the DCI format for downlink data transmission is also referred to as downlink assignment (or downlink grant, DL @ Grant).
- the DCI format for transmitting uplink data is also referred to as an uplink grant (or an uplink assignment, UL @ Grant).
- DCI formats for downlink data transmission include DCI format 1_0 and DCI format 1_1.
- the DCI format 1_0 is for downlink data transmission for fallback, and has fewer parameters (fields) that can be set than the DCI format 1_1 supporting MIMO or the like. Further, the presence / absence (valid / invalid) of the parameter (field) to be notified can be changed in the DCI format 1_1, and the number of bits is larger than that of the DCI format 1_0 depending on the field to be validated.
- the DCI format 1_1 can notify of MIMO, transmission of a plurality of codewords, ZP CSI-RS trigger, CBG transmission information, and the like. CE) is added according to the setting.
- One downlink assignment is used for scheduling one PDSCH in one serving cell.
- BWP When BWP is set, it is used for scheduling one PDSCH in an effective BWP in one serving cell.
- the downlink grant may be used at least for scheduling the PDSCH in the same slot / subframe as the slot / subframe in which the downlink grant was transmitted.
- Downlink grant, in order from said downlink link grant is the transmission slot / sub-frame scheduling of K 0 after slot / subframe PDSCH, may be used.
- the downlink grant may be used for scheduling the PDSCH of a plurality of slots / subframes.
- the following fields are included in the downlink assignment in the DCI format 1_0.
- DCI format identifier For example, DCI format identifier, frequency domain resource assignment (resource block allocation and resource allocation for PDSCH), time domain resource assignment, mapping from VRB to PRB, MCS (Modulation and Coding Scheme, modulation multi-value for PDSCH) Information indicating the number and coding rate), NDI (NEW Data Indicator) for instructing initial transmission or retransmission, information indicating the HARQ process number in the downlink, information of redundant bits added to the codeword during error correction coding Version (RV), DAI (Downlink Assignment Index), PUCCH transmission power control (TPC: Transmission Power) Control) commands, PUCCH resource indicators, and the like indicators of HARQ feedback timing from PDSCH.
- MCS Modulation and Coding Scheme, modulation multi-value for PDSCH
- NDI NW Data Indicator
- RV error correction coding Version
- DAI Downlink Assignment Index
- TPC Transmission Power
- the DCI format for each downlink data transmission includes information (field) necessary for the purpose among the above information.
- One or both of the DCI format 1_0 and the DCI format 1_1 may be used for activation and deactivation (release) of the downlink SPS.
- the DCI format 1_1 may instruct switching of a valid (Active) BWP.
- DCI formats for uplink data transmission include DCI format 0_0 and DCI format 0_1.
- DCI format 0_0 is for uplink data transmission for fallback, and has fewer parameters (fields) that can be set than DCI format 0_1 that supports MIMO and the like.
- the presence / absence (valid / invalid) of the parameter (field) to be notified can be changed in the DCI format 0_1, and the number of bits is larger than that of the DCI format 0_0 depending on the field to be validated.
- DCI format 0_1 is for MIMO or multiple codeword transmission
- SRS resource indicator precoding information, antenna port information, SRS request information, CSI request information, CBG transmission information, uplink PTRS association, DMRS sequence Initialization and the like can be notified, and the presence or absence of some fields and the number of bits are added according to the setting of an upper layer (for example, RRC signaling).
- One uplink grant is used to notify the terminal device of the scheduling of one PUSCH in one serving cell.
- BWP is set, it is used for scheduling one PUSCH in an effective BWP in one serving cell.
- Uplink grant for the said uplink (UL) grant is transmitted slots / sub-frame of the scheduling of PUSCH after K 2 slots / sub-frames may be used. Also, the uplink grant may be used for PUSCH scheduling of a plurality of slots / subframes.
- An uplink grant based on DCI format 0_0 includes the following fields. For example, DCI format identifier, frequency domain resource assignment (information on resource block allocation for transmitting PUSCH and time domain resource assignment, frequency hopping flag, information on MSCH of PUSCH, RV, NDI, HARQ process in uplink Number information, TPC command for PUSCH, UL / SUL (Supplemental UL) indicator, etc.
- DCI format 0_0 and DCI format 0_1 are activated and deactivated (release of uplink SPS)
- DCI format 1_0 When a plurality of BWPs are set, switching of an effective (Active) BWP is performed in the DCI format 1_0.
- one BWP is valid in one serving cell.
- the DCI format may be used for reporting a slot format indicator (SFI) in DCI format 2_0 in which CRC is scrambled in SFI-RNTI.
- the DCI format is a DCI format 2_1 in which the CRC is scrambled in the INT-RNTI, and the terminal device may assume that there is no downlink data transmission intended for its own station, PRB (1 or more) and OFDM. It may be used for notifying a symbol (one or more).
- the DCI format is a DCI format 2_2 in which a CRC is scrambled by TPC-PUSCH-RNTI or TPC-PUCCH-RNTI, and may be used for transmitting a TPC command for PUSCH and PUCCH.
- the DCI format is a DCI format 2_3 in which a CRC is scrambled by TPC-SRS-RNTI, and may be used for transmission of a group of TPC commands for SRS transmission by one or more terminal devices. DCI format 2_3 may also be used for SRS requests.
- the DCI format is a DCI format 2_X (for example, DCI format 2_4, DCI format 2_1A) in which a CRC is scrambled by INT-RNTI or another RNTI (for example, UL-INT-RNTI), and scheduling is performed at UL Grant / Configured UL Grant.
- the terminal device may be used for notifying the PRB (one or more) and the OFDM symbol (one or more) for which the terminal device does not perform data transmission.
- the MCS for the PDSCH / PUSCH can use an index (MCS index) indicating the modulation order of the PDSCH / PUSCH and the target coding rate.
- the modulation order is associated with a modulation scheme.
- the modulation orders "2", “4", and “6” indicate “QPSK”, "16QAM”, and “64QAM”, respectively.
- 256 QAM or 1024 QAM is set in an upper layer (for example, RRC signaling)
- a notification of the modulation order “8” and “10” is possible, and indicates “256 QAM” and “1024 QAM”, respectively.
- the target coding rate is used to determine a TBS (transport block size), which is the number of bits to be transmitted, according to the number of PDSCH / PUSCH resource elements (number of resource blocks) scheduled on the PDCCH.
- the communication system 1 (the base station device 10 and the terminal device 20) calculates a transport block size based on the MCS, the target coding rate, and the number of resource elements (the number of resource blocks) allocated for the PDSCH / PUSCH transmission. To share.
- the PDCCH is generated by adding a cyclic redundancy check (Cyclic Redundancy Check: CRC) to the downlink control information.
- CRC Cyclic Redundancy Check
- CRC parity bits are scrambled (also referred to as an exclusive OR operation, or a mask) using a predetermined identifier.
- Parity bits are C-RNTI (Cell-Radio Network Temporary Identifier), CS (Configured Scheduling) -RNTI, TC (Temporary C) -RNTI, P (Paging) -RNTI, SI (Symmetry) Access) -RNTI, scrambled by INT-RNTI, SFI (Slot @ Format @ Indicator) -RNTI, TPC-PUSCH-RNTI, TPC-PUCCH-RNTI, or TPC-SRS-RNTI.
- C-RNTI is an identifier for identifying a terminal device in a cell by dynamic scheduling
- CS-RNTI is SPS / Grant-Free Access / Configured ⁇ Grant ⁇ Type1 or Type2.
- Temporary @ C-RNTI is an identifier for identifying a terminal device that has transmitted a random access preamble during a contention-based random access procedure (contention-based-random-access-procedure).
- C-RNTI and Temporary @ C-RNTI are used to control PDSCH transmission or PUSCH transmission in a single subframe.
- CS-RNTI is used for periodically allocating PDSCH or PUSCH resources.
- the P-RNTI is used to transmit a paging message (Paging @ Channel: @PCH).
- SI-RNTI is used for transmitting SIB, and RA-RNTI is used for transmitting a random access response (message 2 in a random access procedure).
- the SFI-RNTI is used to notify a slot format.
- the INT-RNTI is used to report downlink / uplink pre-emption (Pre-emption).
- TPC-PUSCH-RNTI, TPC-PUCCH-RNTI, and TPC-SRS-RNTI are used to notify the transmission power control values of PUSCH, PUCCH, and SRS, respectively.
- the identifier may include a CS-RNTI for each setting in order to set a plurality of grant-free access / SPS / Configured ⁇ Grant ⁇ Type 1 or Type 2.
- the DCI added with the CRC scrambled by the CS-RNTI can be used for grant-free access activation, deactivation (release), parameter change and retransmission control (ACK / NACK transmission).
- Resource settings (DMRS setting parameters, frequency-domain / time-domain resources for grant-free access, MCS used for grant-free access, number of repetitions, presence / absence of frequency hopping, etc.) can be included.
- PDSCH is used to transmit downlink data (downlink transport block, DL-SCH).
- the PDSCH is used to transmit a system information message (also referred to as “System Information Block”: SIB). Part or all of the SIB can be included in the RRC message.
- SIB System Information Block
- the PDSCH is used to transmit RRC signaling.
- the RRC signaling transmitted from the base station device may be common (cell-specific) to a plurality of terminal devices in the cell. That is, the information common to the user devices in the cell is transmitted using cell-specific RRC signaling.
- the RRC signaling transmitted from the base station apparatus may be a message dedicated to a certain terminal apparatus (also referred to as dedicated @ signaling). That is, the information specific to the user apparatus (UE-Specific) is transmitted to a certain terminal apparatus using a dedicated message.
- the $ PDSCH is used to transmit a MAC $ CE.
- RRC signaling and / or MAC @ CE are also referred to as higher layer signals.
- the PMCH is used to transmit multicast data (Multicast @ Channel: @MCH).
- a synchronization signal (Synchronization signal: SS) and a downlink reference signal (Downlink Reference Signal: DL RS) are used as downlink physical signals.
- SS Synchronization signal
- DL RS Downlink Reference Signal
- the synchronization signal is used by the terminal device to synchronize the downlink frequency domain and the time domain.
- the downlink reference signal is used by the terminal device to perform channel estimation / channel correction of a downlink physical channel.
- the downlink reference signal is used for demodulating PBCH, PDSCH, and PDCCH.
- the downlink reference signal can also be used by the terminal device to measure the downlink channel state (CSI @ measurement).
- the downlink reference signal includes CRS (Cell-specific Reference Signal), CSI-RS (Channel state Information reference, Signal), DRS (Discovery Reference Signal, and DMRS (Digital Signal).
- a downlink physical channel and a downlink physical signal are collectively referred to as a downlink signal.
- the uplink physical channel and the uplink physical signal are collectively referred to as an uplink signal.
- the downlink physical channel and the uplink physical channel are collectively referred to as a physical channel.
- the downlink physical signal and the uplink physical signal are collectively referred to as a physical signal.
- BCH, UL-SCH and DL-SCH are transport channels.
- Channels used in the MAC layer are called transport channels.
- the unit of the transport channel used in the MAC layer is also called a transport block (TB: Transport @ Block) or a MAC @ PDU (Protocol @ Data @ Unit).
- the transport block is a unit of data that the MAC layer passes (delivers) to the physical layer. In the physical layer, transport blocks are mapped to codewords, and coding processing and the like are performed for each codeword.
- the upper layer processing includes a medium access control (Medium Access Control: MAC) layer, a packet data integration protocol (Packet Data Convergence Protocol): PDCP layer, a radio link control (Radio Link Control: RLC) layer, and a radio resource control (Radio Control). : Perform processing of layers higher than the physical layer such as the (RRC) layer.
- MAC Medium Access Control
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- Radio Control Radio Control
- MAC Medium access control
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- Radio Resource Control Radio Resource Control, etc.
- the upper layer processing unit sets various RNTIs for each terminal device.
- the RNTI is used for encryption (scrambling) of PDCCH, PDSCH, and the like.
- downlink data transport block, DL-SCH
- system information System ⁇ Information ⁇ Block: ⁇ SIB
- RRC message MAC @ CE, or the like
- MAC @ CE or the like
- an upper node Get from and send.
- various setting information of the terminal device 20 is managed. A part of the function of the radio resource control may be performed in the MAC layer or the physical layer.
- information on the terminal device such as a function (UE @ capability) supported by the terminal device is received from the terminal device 20.
- the terminal device 20 transmits its function to the base station device 10 by an upper layer signal (RRC signaling).
- RRC signaling The information on the terminal device includes information indicating whether the terminal device supports a predetermined function, or information indicating that the terminal device has completed the installation and test for the predetermined function. Whether a given function is supported includes whether implementation and testing for the given function has been completed.
- the terminal device transmits information (parameter) indicating whether or not the terminal device supports the predetermined function.
- the terminal device does not have to transmit information (parameter) indicating whether the terminal device supports the predetermined function. That is, whether or not to support the predetermined function is notified by transmitting or not transmitting information (parameter) indicating whether or not to support the predetermined function.
- the information (parameter) indicating whether or not a predetermined function is supported may be notified using one bit of 1 or 0.
- a base station apparatus 10 and a terminal apparatus 20 provide grant-free access (grant-free access, grant-less access, contention-based access, autonomous access access, up-regulation, foreground exchange access, and grant-free access guidance) in the uplink.
- Multiple access (MA: Multiple @ Access) using grant-free access (hereinafter also referred to as grant-free access) is supported.
- Grant-free access refers to transmission of an SR by a terminal apparatus and physical resources for data transmission by UL @ Grant (also referred to as UL @ Grant by L1 signaling) using DCI by a base station apparatus without performing a procedure of designating a physical resource and transmission timing. This is a method in which a device transmits uplink data (such as a physical uplink channel).
- the terminal device uses RRC signaling (Configured GrantConfig) to allocate available resources, the target reception power, the value of fractional TPC ( ⁇ ), the number of HARQ processes, the RV pattern at the time of repeated transmission of the same transport, and the RRC pattern.
- RRC signaling Configured GrantConfig
- ⁇ fractional TPC
- Physical resources frequency domain resource assignments, time domain resource assignments
- transmission parameters DMRS cyclic shift and DMRS cyclic shift
- Configured Uplink Grant (rrcConfiguredUplinkGrant, configured uplink grant) for signaling OCC, antenna port number, position and number of OFDM symbols for arranging DMRS, repetition of the same transport And the like returns the number of transmissions leave receive also good)
- rrcConfiguredUplinkGrant configured uplink grant
- the terminal device when the terminal device receives the Configured GrantConfig but does not receive the RRC-ConfiguredUplinkGrant of the RRC signaling, the terminal device activates by UL @ Grant (DCI format), and the UL @ SPS (configured @ grant @ type2.sigma.data in the same way as the configured grant) You can also send.
- UL @ Grant DCI format
- SPS configured @ grant @ type2.sigma.data in the same way as the configured grant
- the first configured ⁇ grant ⁇ type1 ⁇ transmission ⁇ (UL-TWG-type1) is that the base station apparatus transmits a transmission parameter related to grant-free access to the terminal apparatus by a signal of an upper layer (for example, RRC), and further transmits data of grant-free access.
- RRC transmission permission start
- release permission end
- transmission parameter changes are also transmitted by upper layer signals.
- transmission parameters related to grant-free access include physical resources (time-domain and frequency-domain resource assignments) that can be used for grant-free access data transmission, physical resource period, MCS, presence / absence of repeated transmission, number of repetitions.
- the transmission parameter for grant-free access and the start of data transmission permission may be set at the same time, or, after the transmission parameter for grant-free access is set, grant-free at a different timing (for SCell activation, SCell activation, etc.). Permission start of access data transmission may be set.
- the base station apparatus transmits a transmission parameter related to grant-free access to the terminal apparatus by a signal of an upper layer (for example, RRC), and grant-free access is performed.
- the permission start (activation) and the permission end (deactivation (release)) of the data transmission of, and the change of the transmission parameter are transmitted by DCI (L1 @ signaling).
- the RRC includes the period of the physical resource, the number of repetitions, the setting of the RV at the time of repetitive transmission, the number of HARQ processes, the information of the transformer precoder, and the information about the setting related to the TPC.
- the transmission parameter for grant-free access and the permission start of data transmission may be set at the same time, or after the transmission parameter for grant-free access is set, the permission start of grant-free access data transmission is set at a different timing. Is also good.
- the present invention may be applied to any of the above grant-free access.
- SPS Semi-Persistent Scheduling
- VoIP Voice over Internet Protocol
- the SPS uses DCI to specify the start timing of periodic physical resources (periodic allocation of resource blocks) and to start permission (activation) with UL @ Grant including transmission parameters such as MCS.
- UL-TWG-type1 the type of permitting start (activation) by a signal of a higher layer (for example, RRC) of grant-free access has a different start procedure from that of SPS.
- UL-TWG-type2 has the same point of permitting start (activation) by DCI (L1 @ signaling), but it can be used in SCell, BWP, SUL, the number of repetitions by RRC signaling, and the setting of RV at the time of repetitive transmission. May be different.
- the base station apparatus may scramble using different types of RNTI in DCI (L1 signaling) used in grant-free access (configured UL grant type 1 and configured UL grant type 2) and DCI used in dynamic scheduling.
- CS-RNTI the same RNTI
- CS-RNTI the same RNTI
- DCI used for UL-TWG-type 1 retransmission control activation and deactivation (release) of UL-TWG-type 2 and DCI used for retransmission control
- CS-RNTI the same RNTI
- the base station device 10 and the terminal device 20 may support non-orthogonal multiple access in addition to orthogonal multiple access.
- the base station device 10 and the terminal device 20 can support both grant-free access and scheduled access (dynamic scheduling).
- the uplink scheduled access means that the terminal device 20 transmits data according to the following procedure.
- the terminal device 20 requests a radio resource for transmitting uplink data from the base station device 10 using a random access procedure (Random @ Access @ Procedure) or SR.
- the base station apparatus gives UL @ Grant to each terminal apparatus by DCI based on RACH and SR.
- the terminal apparatus transmits uplink data using a predetermined radio resource based on the uplink transmission parameters included in the UL @ Grant.
- the downlink control information for uplink physical channel transmission may include a shared field for scheduled access and grant-free access.
- the base station apparatus 10 instructs to transmit an uplink physical channel by grant-free access
- the base station apparatus 10 and the terminal apparatus 20 transmit the bit sequence stored in the shared field to grant-free access.
- the base station device 10 instructs to transmit an uplink physical channel by scheduled access
- the base station device 10 and the terminal device 20 interpret the shared field according to the setting for the scheduled access. .
- the transmission of an uplink physical channel in grant-free access is called asynchronous data transmission (Asynchronous data transmission). Note that transmission of a scheduled uplink physical channel is referred to as synchronous data transmission (Synchronous data transmission).
- the terminal device 20 may randomly select a radio resource for transmitting uplink data. For example, the terminal device 20 has been notified of a plurality of available radio resource candidates from the base station device 10 as a resource pool, and randomly selects a radio resource from the resource pool.
- the radio resources for transmitting the uplink data by the terminal device 20 may be preset by the base station device 10. In this case, the terminal device 20 transmits the uplink data using the preset radio resource without receiving the UL @ Grant of DCI (including the designation of the physical resource).
- the radio resource includes a plurality of uplink multi-access resources (resources to which uplink data can be mapped).
- the terminal device 20 transmits uplink data using one or a plurality of uplink multi-access resources selected from a plurality of uplink multi-access resources.
- the radio resource for transmitting uplink data by the terminal device 20 may be determined in advance in a communication system configured by the base station device 10 and the terminal device 20.
- the radio resources for transmitting the uplink data are transmitted by the base station apparatus 10 via a physical broadcast channel (for example, Physical Broadcast Channel) / Radio Resource Control RRC (Radio Resource Control) / system information (for example, SIB: System).
- Physical downlink control channel (downlink control information, for example, PDCCH: Physical Downlink @ Control @ Channel, EPDCCH: Enhanced @ PDCCH, MPDCCH: MTC @ PDCCH, NPDCH: NDCCH is also used as a terminal and PDCCH terminal 20) Good.
- PDCCH Physical Downlink @ Control @ Channel
- EPDCCH Enhanced @ PDCCH
- MPDCCH MTC @ PDCCH
- NPDCH NDCCH is also used as a terminal and PDCCH terminal 20) Good.
- the uplink multi-access resource is composed of a multi-access physical resource and a multi-access signature resource (Multi Access Signature Resource).
- the multi-access physical resource is a resource composed of time and frequency.
- the multi-access physical resource and the multi-access signature resource can be used to specify an uplink physical channel transmitted by each terminal device.
- the resource block is a unit to which the base station device 10 and the terminal device 20 can map a physical channel (for example, a physical data sharing channel, a physical control channel).
- the resource block includes one or more subcarriers (for example, 12 subcarriers and 16 subcarriers) in the frequency domain.
- the multi-access signature resource includes at least one multi-access signature among a plurality of multi-access signature groups (also referred to as a multi-access signature pool).
- the multi-access signature is information indicating features (marks, indicators) for distinguishing (identifying) uplink physical channels transmitted by each terminal device.
- the multi-access signature includes a spatial multiplexing pattern, a spread code pattern (Walsh code, OCC; Orthogonal Cover Code, cyclic shift for data spreading, sparse code, etc.), an interleave pattern, a reference signal pattern for demodulation (reference signal sequence, cyclic Shift, OCC, IFDM) / identification signal pattern, transmission power, etc., and at least one of these is included.
- the terminal device 20 transmits uplink data using one or a plurality of multi-access signatures selected from the multi-access signature pool.
- the terminal device 20 can notify the base station device 10 of a usable multi-access signature.
- the base station device 10 can notify the terminal device of a multi-access signature used when the terminal device 20 transmits uplink data.
- the base station device 10 can notify the terminal device 20 of a group of multi-access signatures that can be used when the terminal device 20 transmits uplink data.
- the group of available multi-access signatures may be notified using a broadcast channel / RRC / system information / downlink control channel. In this case, the terminal device 20 can transmit the uplink data using the multi-access signature selected from the notified multi-access signature group.
- the terminal device 20 transmits uplink data using the multi-access resource.
- the terminal device 20 can map uplink data to a multi-access resource composed of one multi-access physical resource and a multi-carrier signature resource composed of a spreading code pattern and the like.
- the terminal device 20 can also assign uplink data to a multi-access resource composed of one multi-access physical resource and a multi-carrier signature resource composed of an interleave pattern.
- the terminal device 20 can also map uplink data to a multi-access resource composed of one multi-access physical resource and a multi-access signature resource composed of a demodulation reference signal pattern / identification signal pattern.
- the terminal device 20 can also map uplink data to a multi-access resource composed of one multi-access physical resource and a multi-access signature resource composed of a transmission power pattern (for example, the data of each uplink). May be set such that a reception power difference occurs in the base station apparatus 10).
- a transmission power pattern for example, the data of each uplink.
- the uplink data transmitted by the plurality of terminal devices 20 is overlapped (superimposed, spatial multiplexed, non-orthogonal multiplexed) in the physical resources of the uplink multi-access. , Collision) and transmitted.
- the base station device 10 detects a signal of uplink data transmitted by each terminal device in grant-free access.
- the base station apparatus 10 performs SLIC (Symbol Level Interference Cancellation) that removes interference based on the demodulation result of the interference signal, and CWIC (Codeword Level) that performs interference removal based on the decoding result of the interference signal.
- SLIC Symbol Level Interference Cancellation
- CWIC Codeword Level
- Interference @ Cancellation successive interference canceller; SIC or parallel interference canceller; also referred to as PIC
- turbo equalization maximum likelihood detection (MLD: maximum likelihood @ detection, R-MLD) for searching for the most likely transmission signal candidate : Reduced complexity, maximum, likelihood, detection, and interference signal by linear operation.
- EMMSE-IRC Enhanced Minimum Mean Square Error-Interference Rejection Combining
- message passing by the signal detection BP: Belief propagation
- matched filter and MF Matched Filter
- FIG. 2 is a diagram illustrating an example of a radio frame configuration of the communication system according to the present embodiment.
- the radio frame configuration indicates a configuration in a time-domain multi-access physical resource.
- One radio frame is composed of a plurality of slots (may be subframes).
- FIG. 2 is an example in which one radio frame is composed of ten slots.
- the terminal device 20 has a subcarrier interval (reference numerology) serving as a reference.
- the subframe is composed of a plurality of OFDM symbols generated at a subcarrier interval serving as a reference.
- FIG. 2 shows an example in which the subcarrier interval is 15 kHz, one frame is composed of ten slots, one subframe is composed of one slot, and one slot is composed of fourteen OFDM symbols.
- the subcarrier interval is 15 kHz ⁇ 2 ⁇ ( ⁇ is an integer of 0 or more)
- one frame is composed of 2 ⁇ ⁇ 10 slots and one subframe is composed of 2 ⁇ slots.
- FIG. 2 shows a case where the reference subcarrier interval is the same as the subcarrier interval used for uplink data transmission.
- the slot may be a minimum unit on which the terminal device 20 maps a physical channel (for example, a physical data sharing channel or a physical control channel).
- a physical channel for example, a physical data sharing channel or a physical control channel.
- one slot is a resource block unit in the time domain.
- the minimum unit for mapping the physical channel by the terminal device 20 may be one or a plurality of OFDM symbols (for example, 2 to 13 OFDM symbols).
- the base station device 10 one or a plurality of OFDM symbols is a resource block unit in the time domain.
- the base station device 10 may signal the minimum unit for mapping the physical channel to the terminal device 20.
- FIG. 3 is a schematic block diagram showing the configuration of the base station device 10 according to the present embodiment.
- the base station apparatus 10 includes a reception antenna 202, a reception unit (reception step) 204, an upper layer processing unit (upper layer processing step) 206, a control unit (control step) 208, a transmission unit (transmission step) 210, and a transmission antenna 212. It is comprised including.
- Receiving section 204 includes radio receiving section (wireless receiving step) 2040, FFT section 2041 (FFT step), demultiplexing section (multiplexing / demultiplexing step) 2042, propagation path estimating section (propagation path estimating step) 2043, signal detecting section (signal (Detection step) 2044.
- the transmission unit 210 includes an encoding unit (encoding step) 2100, a modulation unit (modulation step) 2102, a multiple access processing unit (multiple access processing step) 2106, a multiplexing unit (multiplexing step) 2108, a wireless transmission unit (wireless transmission step). ) 2110, an IFFT section (IFFT step) 2109, a downlink reference signal generation section (downlink reference signal generation step) 2112, and a downlink control signal generation section (downlink control signal generation step) 2113.
- the receiving unit 204 demultiplexes, demodulates, and decodes an uplink signal (uplink physical channel, uplink physical signal) received from the terminal device 10 via the reception antenna 202.
- Receiving section 204 outputs a control channel (control information) separated from the received signal to control section 208.
- Receiving section 204 outputs the decoding result to upper layer processing section 206.
- the receiving unit 204 acquires an ACK / NACK and CSI for SR and downlink data transmission included in the received signal.
- Radio receiving section 2040 converts the uplink signal received via receiving antenna 202 into a baseband signal by down-conversion, removes unnecessary frequency components, and increases the amplification level so that the signal level is appropriately maintained. It controls and quadrature demodulates based on the in-phase and quadrature components of the received signal, and converts the quadrature-demodulated analog signal into a digital signal. Radio receiving section 2040 removes a part corresponding to CP (Cyclic @ Prefix) from the converted digital signal. FFT section 2041 performs fast Fourier transform on the downlink signal from which the CP has been removed (demodulation processing for OFDM modulation), and extracts a signal in the frequency domain.
- CP Cyclic @ Prefix
- Propagation path estimation section 2043 performs channel estimation for signal detection of an uplink physical channel using a demodulation reference signal.
- the channel estimation unit 2043 receives from the control unit 208 the resources to which the demodulation reference signal is mapped and the demodulation reference signal sequence assigned to each terminal device.
- the channel estimation unit 2043 measures the channel state (channel state) between the base station device 10 and the terminal device 20 using the demodulation reference signal sequence.
- the channel estimation unit 2043 can identify a terminal device using the result of channel estimation (impulse response and frequency response of the channel state) (for this reason, it is also referred to as an identification unit).
- the channel estimation unit 2043 determines that the terminal device 20 associated with the demodulation reference signal for which the channel state has been successfully extracted has transmitted the uplink physical channel.
- the demultiplexing unit 2042 converts the frequency domain signal (including the signals of the plurality of terminal devices 20) input from the FFT unit 2041 in the resource determined by the propagation path estimation unit 2043 to have transmitted the uplink physical channel. Extract.
- the demultiplexing unit 2042 separates and extracts uplink physical channels (physical uplink control channels, physical uplink shared channels) and the like included in the extracted uplink signals in the frequency domain.
- the demultiplexing unit outputs the physical uplink channel to the signal detection unit 2044 / control unit 208.
- the signal detection unit 2044 uses the channel estimation result estimated by the channel estimation unit 2043 and the signal in the frequency domain input from the demultiplexing unit 2042 to transmit uplink data (uplink physical channel) of each terminal device. ) Is detected.
- Signal detection section 2044 detects a signal of terminal apparatus 20 associated with a demodulation reference signal (a demodulation reference signal for which channel state has been successfully extracted) allocated to terminal apparatus 20 that has determined that uplink data has been transmitted. Perform processing.
- FIG. 4 is a diagram illustrating an example of the signal detection unit according to the present embodiment.
- the signal detection unit 2044 includes an equalization unit 2504, a multiple access signal separation unit 2506-1 to 2506-u, an IDFT unit 2508-1 to 2508-u, a demodulation unit 2510-1 to 2510-u, and a decoding unit 2512-1 to 2512-u.
- u indicates that in the case of grant-free access, the propagation path estimator 2043 determines that uplink data has been transmitted in the same or overlapping multiple access physical resources (at the same time and at the same frequency) (success in channel state extraction). ) Is the number of terminal devices.
- u is the number of terminal devices that have permitted uplink data transmission in the same or overlapping multiple access physical resources in DCI (at the same time, for example, in OFDM symbols and slots).
- Each part configuring the signal detection unit 2044 is controlled using the setting regarding grant-free access of each terminal device input from the control unit 208.
- Equalization section 2504 generates an equalization weight based on the MMSE criterion from the frequency response input from propagation path estimation section 2043.
- the equalization process may use MRC or ZF.
- the equalization unit 2504 multiplies the frequency domain signal (including the signal of each terminal device) input from the demultiplexing unit 2042 by the equalization weight, and extracts the frequency domain signal of each terminal device.
- Equalization section 2504 outputs the frequency domain signal of each terminal device after the equalization to IDFT sections 2508-1 to 2508-u.
- IDFT sections 2508-1 to 2508-u where, when detecting data transmitted by the terminal device 20 having a signal waveform of DFTS-OFDM, a signal in the frequency domain is output to the IDFT units 2508-1 to 2508-u.
- the terminal device 20 when receiving data transmitted by the terminal device 20 having the signal waveform of OFDM, the terminal device 20 outputs a frequency domain signal to the multiple access signal separation units 2506-1 to 2506-u.
- IDFT sections 2508-1 to 2508-u convert frequency domain signals of each terminal device after equalization into time domain signals.
- the IDFT units 2508-1 to 2508-u correspond to the processing performed by the DFT unit of the terminal device 20.
- the multiple-access signal separation units 2506-1 to 2506-u separate the signals multiplexed by the multi-access signature resource from the time domain signal of each terminal device after the IDFT (multiple-access signal separation processing). For example, when code spreading is used as a multi-access signature resource, each of the multiple access signal separation units 2506-1 to 2506-u performs a despreading process using a spreading code sequence assigned to each terminal device. .
- a deinterleaving process is performed on a time-domain signal of each terminal device after IDFT (deinterleaving unit).
- the demodulation units 2510-1 to 2510-u receive, from the control unit 208, information (BPSK, QPSK, 16QAM, 64QAM, 256QAM, etc.) of the modulation scheme of each terminal device that has been notified or determined in advance. Is done.
- the demodulation units 2510-1 to 2510-u perform demodulation processing on the signal after demultiplexing the multiple access signal based on the information on the modulation scheme, and output a bit sequence LLR (Log @ Likelihood @ Ratio).
- Decoding sections 2512-1 to 2512-u perform a decoding process on the LLR sequence output from the demodulation sections 2511-1 to 2510-u, and transmit the decoded uplink data / uplink control information to the upper layer. Output to the processing unit 206.
- the decoding units 2512-1 to 2512-u generate replicas from external LLRs or posterior LLRs of decoding unit outputs, and cancel. Processing may be performed.
- SIC Successive Interference Canceller
- the difference between the external LLR and the posterior LLR is whether or not to subtract the prior LLR input to each of the decoding units 2512-1 to 2512-u from the LLR after decoding.
- the decoding units 2512-1 to 2512-u make hard decisions on the LLRs after the decoding processing, and determine the uplink data of each terminal device.
- the bit sequence may be output to the upper layer processing unit 206.
- signal detection using turbo equalization processing but also signal generation without replica cancellation and maximum likelihood detection without interference removal, EMMSE-IRC, or the like can be used.
- the control unit 208 performs setting information related to uplink reception / setting information related to downlink transmission included in an uplink physical channel (physical uplink control channel, physical uplink shared channel, etc.)
- the receiving unit 204 and the transmitting unit 210 are controlled using RRC, SIB, or the like).
- the control unit 208 acquires from the upper layer processing unit 206 the setting information related to uplink reception / setting information related to downlink transmission.
- control section 208 When transmitting section 210 transmits the physical downlink control channel, control section 208 generates downlink control information (DCI: Downlink ⁇ Control ⁇ information) and outputs it to transmitting section 210.
- DCI Downlink ⁇ Control ⁇ information
- a part of the function of the control unit 108 can be included in the upper layer processing unit 102.
- the control unit 208 may control the transmission unit 210 according to the parameter of the CP length added to the data signal.
- the upper layer processing unit 206 includes a medium access control (MAC: Medium Access Control) layer, a packet data integration protocol (PDCP: Packet Data Convergence Protocol) layer, a radio link control (RLC: Radio Link Control) layer, and a radio resource control (RRC). : Performs processing of a layer higher than a physical layer such as a Radio / Resource / Control layer.
- Upper layer processing section 206 generates information necessary for controlling transmission section 210 and reception section 204 and outputs the information to control section 208.
- Upper layer processing section 206 outputs downlink data (for example, DL-SCH), broadcast information (for example, BCH), hybrid automatic repeat request (Hybrid Automatic Repeat Request) indicator (HARQ indicator), and the like to transmitting section 210. .
- the upper layer processing unit 206 receives, from the receiving unit 204, information on a function (UE @ capability) of the terminal device supported by the terminal device. For example, the upper layer processing unit 206 receives information on the function of the terminal device by signaling of the RRC layer.
- a function UE @ capability
- the information on the function of the terminal device includes information indicating whether the terminal device supports a predetermined function, or information indicating that the terminal device has completed installation and test for the predetermined function. Whether a given function is supported includes whether implementation and testing for the given function has been completed.
- the terminal device transmits information (parameter) indicating whether the terminal device supports the predetermined function. If the terminal device does not support the predetermined function, the terminal device may not transmit information (parameter) indicating whether the terminal device supports the predetermined function. That is, whether or not to support the predetermined function is notified by transmitting or not transmitting information (parameter) indicating whether or not to support the predetermined function.
- the information (parameter) indicating whether or not a predetermined function is supported may be notified using one bit of 1 or 0.
- the information on the functions of the terminal device includes information indicating that grant-free access is supported (information as to whether to support configured UL grant type 1 and configured UL grant type 2 respectively).
- the upper layer processing unit 206 can receive information indicating whether or not each function is supported.
- the information indicating that grant-free access is supported includes information indicating a multi-access physical resource and a multi-access signature resource supported by the terminal device.
- the information indicating that grant-free access is supported may include setting of a reference table for setting of the multi-access physical resource and the multi-access signature resource.
- Information indicating that grant-free access is supported includes capabilities corresponding to a plurality of tables indicating antenna ports, scrambling identities and the number of layers, capabilities corresponding to a predetermined number of antenna ports, and a predetermined transmission mode. May be included in part or all of the ability corresponding to.
- the transmission mode is determined by the number of antenna ports, transmission diversity, the number of layers, and whether grant-free access is supported or not.
- the information about the function of the terminal device may include information indicating that the function about the URLLC is supported.
- information about the URLLC For example, as a DCI format of dynamic scheduling of uplink, SPS / grant-free access, dynamic scheduling of downlink, or SPS, there is a compact @ DCI format in which the total number of information bits of a field in the DCI format is small.
- the information on the information may include information indicating that the reception processing (blind decoding) of the compact @ DCI format is supported.
- the DCI format is arranged and transmitted in the search space of the PDCCH, but the number of resources that can be used is determined for each aggregation level.
- the DCI format is set in a predetermined resource element (search space). Therefore, when the number of resource elements (aggregation level) is fixed, a DCI format having a large payload size is transmitted at a higher coding rate than a DCI format having a small payload size, and it is difficult to satisfy high reliability.
- the information about the function of the terminal device may include information indicating that the function about the URLLC is supported. For example, by repeatedly transmitting the information of the DCI format of the dynamic scheduling of the uplink and the downlink, it may include information indicating that detection of the PDCCH with high reliability (detection by blind decoding) is supported.
- the base station apparatus associates a blind decoding candidate, an aggregation level, a search space, a RESET, a BWP, a serving cell, and a slot in a repeatedly transmitted search space with a predetermined value. Information of the same DCI format may be repeatedly transmitted according to rules.
- the information about the function of the terminal device may include information indicating that the terminal device supports a function related to carrier aggregation.
- the information on the function of the terminal device is information indicating that the terminal device supports a function on simultaneous transmission of a plurality of component carriers (serving cells) (including overlap in a time domain and overlap in at least some OFDM symbols). May be included.
- the upper layer processing unit 206 manages various setting information of the terminal device. Part of the various setting information is input to the control unit 208. The various setting information is transmitted from the base station device 10 using the downlink physical channel via the transmission unit 210. The various setting information includes setting information regarding grant-free access input from the transmission unit 210. The setting information related to the grant-free access includes setting information of a multi-access resource (a multi-access physical resource and a multi-access signature resource).
- uplink resource block setting start position of OFDM symbol to be used and number of OFDM symbols / number of resource blocks
- setting of demodulation reference signal / identification signal reference signal sequence, cyclic shift, OFDM symbol to be mapped, etc.
- Spreading code setting Walsh code, OCC; Orthogonal Cover Code, sparse code and spreading factor of these spreading codes, etc.
- interleave setting transmission power setting, transmitting and receiving antenna setting, transmitting and receiving beamforming setting, etc.
- the association of a multi-access signature resource is indicated by a multi-access signature process index.
- the setting information on the grant-free access may include a reference table setting for setting the multi-access physical resource and the multi-access signature resource.
- the setting information regarding grant-free access may include information indicating setup and release of grant-free access, ACK / NACK reception timing information for an uplink data signal, retransmission timing information for an uplink data signal, and the like.
- the upper layer processing unit 206 based on the setting information on grant-free access notified as control information, grant-free uplink data (transport block) multi-access resources (multi-access physical resources, multi-access signature resources) Manage.
- the upper layer processing unit 206 outputs information for controlling the receiving unit 204 to the control unit 208 based on the setting information regarding grant-free access.
- the upper layer processing unit 206 outputs the generated downlink data (for example, DL-SCH) to the transmission unit 210.
- the downlink data may include a field for storing a UE @ ID (RNTI).
- the upper layer processing unit 206 adds a CRC to the downlink data.
- the CRC parity bit is generated using the downlink data.
- the CRC parity bits are scrambled (also referred to as exclusive OR operation, mask, and encryption) with the UE @ ID (RNTI) assigned to the destination terminal device.
- RNTI UE @ ID
- the upper layer processing unit 206 generates system information (MIB, SIB) to be broadcast or obtains it from an upper node.
- the upper layer processing unit 206 outputs the broadcasted system information to the transmission unit 210.
- the broadcasted system information may include information indicating that the base station apparatus 10 supports grant-free access.
- the upper layer processing unit 206 can include a part or all of setting information related to grant-free access (eg, setting information related to a multi-access resource such as a multi-access physical resource and a multi-access signature resource) in the system information.
- Uplink The system control information is mapped to a physical broadcast channel / physical downlink shared channel in transmitting section 210.
- the upper layer processing unit 206 generates downlink data (transport block), system information (SIB), RRC message, MAC @ CE, etc., which are mapped to the physical downlink shared channel, or obtains the information from the upper node, and transmits the data. Output to 210.
- the upper layer processing unit 206 can include, in these upper layer signals, some or all of the setting information related to grant-free access and the parameters indicating the setup and release of grant-free access.
- the upper layer processing unit 206 may generate a dedicated SIB for notifying setting information regarding grant-free access.
- the upper layer processing unit 206 maps the multi-access resource to the terminal device 20 supporting the grant-free access.
- the base station device 10 may hold a reference table of setting parameters related to the multi-access signature resource.
- the upper layer processing unit 206 assigns each setting parameter to the terminal device 20.
- the upper layer processing unit 206 generates setting information on grant-free access to each terminal device using the multi-access signature resource.
- the upper layer processing unit 206 generates a downlink shared channel including a part or all of setting information regarding grant-free access to each terminal device.
- the upper layer processing unit 206 outputs the setting information regarding the grant-free access to the control unit 208 / transmission unit 210.
- the upper-layer processing unit 206 sets a UE ID for each terminal device and notifies the terminal device of the UE ID.
- the UE @ ID may use a radio network temporary identifier (RNTI: Cell ⁇ Network ⁇ Temporary ⁇ Identifier).
- the UE @ ID is used for scrambling the CRC added to the downlink control channel and the downlink shared channel.
- the UE @ ID is used for scrambling a CRC added to the uplink shared channel.
- the UE @ ID is used for generating an uplink reference signal sequence.
- Upper layer processing section 206 may set a UE @ ID unique to SPS / grant-free access.
- the upper layer processing unit 206 may set the UE @ ID depending on whether the terminal device supports grant-free access.
- the downlink physical channel UE ID is different from the downlink physical channel UE ID. It may be set separately.
- Upper layer processing section 206 outputs the setting information on the UE @ ID to transmitting section 210 / control section 208 / receiving section 204.
- the upper layer processing unit 206 determines the coding rate, modulation scheme (or MCS), transmission power, and the like of a physical channel (physical downlink shared channel, physical uplink shared channel, and the like). Upper layer processing section 206 outputs the coding rate / modulation scheme / transmission power to transmitting section 210 / control section 208 / receiving section 204. The upper layer processing unit 206 can include the coding rate / modulation scheme / transmission power in a signal of an upper layer.
- the transmission unit 210 transmits a physical downlink shared channel when downlink data to be transmitted occurs.
- transmitting section 210 transmits a physical downlink shared channel by scheduled access, and transmits a physical downlink shared channel of SPS when activating SPS. You may.
- Transmitting section 210 generates a physical downlink shared channel and a demodulation reference signal / control signal associated therewith in accordance with the settings related to scheduled access / SPS input from control section 208.
- Encoding section 2100 encodes downlink data input from upper layer processing section 206 (including repetition) using an encoding scheme predetermined / set by control section 208.
- a coding method convolutional coding, turbo coding, LDPC (Low Density Parity Check) coding, Polar coding, or the like can be applied.
- An LDPC code may be used for data transmission
- a Polar code may be used for transmission of control information
- different error correction coding may be used depending on the downlink channel used.
- different error correction coding may be used depending on the size of data to be transmitted or control information.For example, when the data size is smaller than a predetermined value, a convolutional code is used, and in other cases, the correction coding is used. May be.
- the coding may use a mother code having a low coding rate of 1/6 or 1/12 in addition to the coding rate of 1/3.
- a coding rate used for data transmission may be realized by rate matching (puncturing).
- Modulating section 2102 converts the coded bits input from coding section 2100 into downlink control information such as BPSK, QPSK, 16QAM, 64QAM, 256QAM (which may also include ⁇ / 2 shift BPSK and ⁇ / 4 shift QPSK). Modulation is performed according to the notified modulation method or the modulation method predetermined for each channel.
- Multiple access processing section 2106 allows base station apparatus 10 to detect a signal even if a plurality of data are multiplexed with respect to the sequence output from modulation section 2102 in accordance with the multi-access signature resource input from control section 208. Convert the signal as follows. If the multi-access signature resource is spread, the spread code sequence is multiplied according to the setting of the spread code sequence. When interleaving is set as a multi-access signature resource, the multiple access processing unit 2106 can be replaced with an interleave unit. The interleaving unit performs an interleaving process on the sequence output from the modulation unit 2102 according to the setting of the interleave pattern input from the control unit 208.
- the transmitting unit 210 and the multiple access processing unit 2106 perform spreading processing and interleaving.
- the multiple access processing unit 2106 inputs the signal after the multiple access processing to the multiplexing unit 2108.
- the downlink reference signal generation unit 2112 generates a demodulation reference signal according to the setting information of the demodulation reference signal input from the control unit 208.
- the setting information of the demodulation reference signal / identification signal is based on information such as the number of OFDM symbols notified by the base station device in downlink control information, the OFDM symbol position where the DMRS is arranged, cyclic shift, and time domain spreading. Generate a sequence determined by a predetermined rule.
- the multiplexing unit 2108 multiplexes (maps and arranges) downlink physical channels and downlink reference signals to resource elements for each transmission antenna port.
- SCMA SCMA resource pattern
- the multiplexing unit 2108 arranges the downlink physical channel in a resource element according to the SCMA resource pattern input from the control unit 208.
- the IFFT section 2109 performs an inverse fast Fourier transform (Inverse Fast Fourier Transform: IFFT) on the multiplexed signal, performs OFDM modulation, and generates an OFDM symbol.
- Radio transmitting section 2110 adds a CP to the OFDM-modulated symbol to generate a baseband digital signal. Further, the radio transmission unit 2110 converts the baseband digital signal into an analog signal, removes unnecessary frequency components, converts the baseband digital signal into a carrier frequency by up-conversion, amplifies power, and transmits the terminal device via the transmission antenna 212. 20.
- Radio transmitting section 2110 includes a transmission power control function (transmission power control section). The transmission power control follows the transmission power setting information input from control section 208. When FBMC, UF-OFDM, or F-OFDM is applied, the OFDM symbol is filtered on a subcarrier or subband basis.
- FIG. 5 is a schematic block diagram showing the configuration of the terminal device 20 in the present embodiment.
- the terminal device 20 and the base station device 10 include an upper layer processing unit (upper layer processing step) 102, a transmission unit (transmission step) 104, a transmission antenna 106, a control unit (control step) 108, a reception antenna 110, and a reception unit (reception step). ) 112.
- the transmitting unit 104 includes an encoding unit (encoding step) 1040, a modulation unit (modulation step) 1042, a multiple access processing unit (multiple access processing step) 1043, a multiplexing unit (multiplexing step) 1044, and a DFT unit (DFT step) 1045.
- Receiving section 112 includes radio receiving section (wireless receiving step) 1120, FFT section (FFT step) 1121, channel estimating section (channel estimating step) 1122, demultiplexing section (demultiplexing step) 1124, and signal detecting section (signal (Detection step) 1126.
- the upper layer processing unit 102 includes a medium access control (MAC: Medium Access Control) layer, a packet data integration protocol (PDCP: Packet Data Convergence Protocol) layer, a radio link control (RLC: Radio Link Control) layer, and a radio resource control (RRC). : Performs processing of a layer higher than a physical layer such as a Radio ⁇ Resource ⁇ Control layer.
- Upper layer processing section 102 generates information necessary for controlling transmission section 104 and reception section 112 and outputs the information to control section 108.
- the upper layer processing unit 102 outputs uplink data (eg, UL-SCH), uplink control information, and the like to the transmission unit 104.
- the upper-layer processing unit 102 transmits information about the terminal device such as the function of the terminal device (UE @ capability) from the base station device 10 (via the transmission unit 104).
- the information about the terminal device is information indicating that grant / free access and reception / detection / blind decoding of compact @ DCI are supported, and reception / detection / blind decoding is performed when information of the repetitive DCI format is transmitted on the PDCCH. And information indicating whether to support each function.
- the information indicating that the grant-free access is supported and the information indicating whether the function is supported for each function may be distinguished by the transmission mode.
- the control unit 108 controls the transmission unit 104 and the reception unit 112 based on various setting information input from the upper layer processing unit 102.
- the control unit 108 generates uplink control information (UCI) based on the setting information related to the control information input from the upper layer processing unit 102, and outputs it to the transmission unit 104.
- UCI uplink control information
- the transmission unit 104 encodes and modulates uplink control information, an uplink shared channel, and the like input from the upper layer processing unit 102 for each terminal device, and converts a physical uplink control channel and a physical uplink shared channel. Generate.
- Encoding section 1040 encodes the uplink control information and the uplink shared channel (including repetition) by using a coding scheme that has been notified by predetermined / control information. As a coding method, convolutional coding, turbo coding, LDPC (Low Density Parity Check) coding, Polar coding, or the like can be applied.
- Modulating section 1042 modulates the coded bits input from coding section 1040 by a modulation method notified by predetermined / control information such as BPSK, QPSK, 16QAM, 64QAM, 256QAM.
- Multiple access processing section 1043 allows base station apparatus 10 to detect a signal of a sequence output from modulating section 1042 even when a plurality of data are multiplexed according to a multi-access signature resource input from control section 108. Convert the signal as follows. If the multi-access signature resource is spread, the spread code sequence is multiplied according to the setting of the spread code sequence. The setting of the spreading code sequence may be associated with another grant-free access-related setting such as the demodulation reference signal / identification signal. Note that the multiple access processing may be performed on the stream after the DFT processing. When interleaving is set as a multi-access signature resource, the multiple access processing unit 1043 can be replaced with an interleave unit.
- the interleave unit performs an interleave process on the sequence output from the DFT unit according to the setting of the interleave pattern input from the control unit 108.
- code spreading and interleaving are set as the multi-access signature resources
- the transmitting unit 104 and the multiple access processing unit 1043 perform spreading processing and interleaving. The same applies when other multi-access signature resources are applied, and sparse codes or the like may be applied.
- the multiple access processing unit 1043 inputs the signal after multiple access processing to the DFT unit 1045 or the multiplexing unit 1044 depending on whether the signal waveform is DFTS-OFDM or OFDM.
- DFT section 1045 rearranges the modulation symbols output from multiple access processing section 1043 after the multiple access processing in parallel, and then performs discrete Fourier transform (Discrete Fourier Transform: $ DFT) processing. I do.
- a signal waveform that uses a zero section instead of the CP in the time signal after the IFFT may be performed by performing a DFT by adding a zero symbol sequence to the modulation symbol.
- a specific sequence such as a Gold sequence or a Zadoff-Chu sequence may be added to the modulation symbol, and DFT may be performed to obtain a signal waveform using a specific pattern instead of the CP for the time signal after IFFT.
- the signal waveform is OFDM
- the signal after multiple access processing is input to multiplexing section 1044 because DFT is not applied.
- the control unit 108 sets the zero symbol sequence (such as the number of bits of the symbol sequence) and the specific sequence setting (sequence type (seed), sequence length, and the like) included in the setting information related to the grant-free access. Use and control.
- the uplink control signal generator 1046 adds a CRC to the uplink control information input from the controller 108 to generate a physical uplink control channel.
- the uplink reference signal generation section 1048 generates an uplink reference signal.
- the multiplexing unit 1044 maps the modulation symbol of each uplink physical channel modulated by the multiple access processing unit 1043 or the DFT unit 1045, the physical uplink control channel, and the uplink reference signal to resource elements.
- the multiplexing unit 1044 maps the physical uplink shared channel and the physical uplink control channel to resources allocated to each terminal device.
- the IFFT section 1049 generates an OFDM symbol by performing an inverse fast Fourier transform (Inverse Fast Fourier Transform: IFFT) on the multiplexed modulation symbol of each uplink physical channel.
- the wireless transmission unit 1050 adds a cyclic prefix (cyclic @ prefix: @CP) to the OFDM symbol to generate a baseband digital signal.
- radio transmitting section 1050 converts the digital signal into an analog signal, removes unnecessary frequency components by filtering, up-converts the carrier signal to a carrier frequency, amplifies power, and outputs the signal to transmitting antenna 106 for transmission.
- Receiving section 112 detects a downlink physical channel transmitted from base station apparatus 10 using a demodulation reference signal.
- the receiving unit 112 detects a downlink physical channel based on the setting information notified from the base station apparatus by control information (DCI, RRC, SIB, etc.).
- receiving section 112 performs blind decoding on a search space included in the PDCCH with respect to a predetermined candidate or a candidate notified by higher layer control information (RRC signaling).
- the receiving unit 112 uses the C-RNTI, CS-RNTI, INT-RNTI (both downlink and uplink may be present) as a result of the blind decoding, and CRCs scrambled by other RNTIs, Detect DCI.
- the blind decoding may be performed by the signal detection unit 1126 in the reception unit 112 or not shown in the drawing, but has a separate control signal detection unit and is performed by the control signal detection unit. May be.
- Radio receiving section 1120 converts the uplink signal received via receiving antenna 110 into a baseband signal by down-conversion, removes unnecessary frequency components, and increases the amplification level so that the signal level is appropriately maintained. And quadrature demodulation based on the in-phase and quadrature components of the received signal, and convert the quadrature-demodulated analog signal into a digital signal. Radio receiving section 1120 removes a portion corresponding to CP from the converted digital signal.
- the FFT unit 1121 performs fast Fourier transform (Fast Fourier Transform: $ FFT) on the signal from which the CP has been removed, and extracts a signal in the frequency domain.
- the channel estimation unit 1122 performs channel estimation for signal detection of a downlink physical channel using the demodulation reference signal.
- the channel estimation unit 1122 receives from the control unit 108 the resources to which the demodulation reference signal is mapped and the demodulation reference signal sequence assigned to each terminal device.
- the channel estimation unit 1122 measures the channel state (channel state) between the base station device 10 and the terminal device 20 using the demodulation reference signal sequence.
- the demultiplexing unit 1124 extracts a signal in the frequency domain (including signals of a plurality of terminal devices 20) input from the wireless reception unit 1120.
- the signal detection unit 1126 detects a downlink data (uplink physical channel) signal using the channel estimation result and the frequency domain signal input from the demultiplexing unit 1124.
- the upper layer processing unit 102 acquires downlink data (bit sequence after hard decision) from the signal detection unit 1126.
- the upper layer processing unit 102 performs descrambling (exclusive OR operation) on the CRC included in the downlink data after decoding of each terminal device, using the UE @ ID (RNTI) assigned to each terminal. Do.
- the upper layer processing unit 102 determines that the downlink data has been correctly received.
- FIG. 6 is a diagram illustrating an example of the signal detection unit according to the present embodiment.
- the signal detection unit 1126 includes an equalization unit 1504, multiple access signal separation units 1506-1 to 1506-c, demodulation units 1510-1 to 1510-c, and decoding units 1512-1 to 1512-c.
- Equalization section 1504 generates equalization weights based on the MMSE criterion from the frequency response input from propagation path estimation section 1122.
- the equalization process may use MRC or ZF.
- Equalization section 1504 multiplies the frequency domain signal input from demultiplexing section 1124 by the equalization weight, and extracts a frequency domain signal.
- Equalization section 1504 outputs the frequency domain signal after equalization to multiple access signal separation sections 1506-1 to 1506-c.
- c is 1 or more, and is the number of signals received in the same subframe, the same slot, and the same OFDM symbol, for example, PUSCH and PUCCH. Other downlink channels may be received at the same timing.
- the multiple access signal separation units 1506-1 to 1506-c separate a signal multiplexed by a multi-access signature resource from a signal in the time domain (multiple access signal separation processing). For example, when code spreading is used as the multi-access signature resource, each of the multiple access signal separation units 1506-1 to 1506-c performs a despreading process using the used spreading code sequence. When interleaving is applied as a multi-access signature resource, a deinterleaving process is performed on a signal in the time domain (deinterleaving unit).
- ⁇ Information of a previously notified or predetermined modulation scheme is input from the control unit 108 to the demodulation units 1510-1 to 1510-c.
- the demodulation units 1510-1 to 1510-c perform demodulation processing on the demultiplexed signal based on the information on the modulation scheme, and output a bit sequence LLR (Log @ Likelihood @ Ratio).
- the information of the coding rate notified or predetermined is input from the control unit 108 to the decoding units 1512-1 to 1512-c.
- the decoding units 1512-1 to 1512-c perform decoding processing on the LLR sequences output from the demodulation units 1510-1 to 1510-c.
- the decoding units 1512-1 to 1512-c generate replicas from external LLRs or posterior LLRs of decoding unit outputs, and cancel. Processing may be performed.
- the difference between the external LLR and the post LLR is whether to subtract the prior LLR input to the decoding units 1512-1 to 1512-c from the decoded LLR, respectively.
- FIG. 7 shows an example of a sequence chart of uplink data transmission in dynamic scheduling.
- the base station apparatus 10 periodically transmits a synchronization signal and a broadcast channel in a downlink according to a predetermined radio frame format.
- the terminal device 20 performs an initial connection using a synchronization signal, a broadcast channel, and the like (S201).
- the terminal device 20 performs frame synchronization and symbol synchronization in the downlink using the synchronization signal.
- the broadcast channel includes setting information related to grant-free access
- the terminal device 20 acquires the setting related to grant-free access in the connected cell.
- the base station device 10 can notify each terminal device 20 of the UE @ ID in the initial connection.
- the terminal device 20 transmits UE Capability (S202).
- the base station apparatus 10 uses the UE @ Capability to determine whether the terminal apparatus 20 supports grant-free access, supports URLLC data transmission, supports eMBB data transmission, and transmits multiple types of SRs.
- Support support for data transmission using different MCS tables, support for detection of Compact DCI with fewer bits than DCI formats 0_0 and 0_1, support for detection of DCI format transmitted repeatedly, It is possible to specify whether or not the detection of the group common DCI is supported.
- the terminal device 20 can transmit a physical random access channel in order to acquire resources for uplink synchronization or an RRC connection request.
- the base station device 10 transmits setting information of a scheduling request (SR) for requesting a radio resource for uplink data transmission to each of the terminal devices 20 using the RRC message, the SIB, and the like (S203).
- SR scheduling request
- setting information of two types of scheduling requests (SRs) for requesting radio resources for uplink data transmission may be transmitted to each of the terminal devices 20.
- the SR is set by setting a plurality of PUCCH formats (0 or 1) to be used, resources of the PUCCH, a period of a transmission prohibition timer after transmission of the SR, a maximum number of transmissions of the SR, a period and an offset in which the SR can be transmitted.
- the base station apparatus may notify the setting information of three types of SR including the SR for mMTC.
- An example of a method of notifying the SR for the eMBB and the URLLC includes a plurality of SR transmission settings (PUCCH resource, PUCCH format, SR transmittable cycle and offset, period of transmission prohibition timer after transmission of SR, SR , The maximum number of times of transmission is one set), one or more settings (one or more sets) may be specified as a transmission setting of the SR for URLLC by an upper layer signal such as RRC. .
- one or more IDs are set as the transmission setting of the SR for URLLC by the ID (SchedulingRequestId) indicating the set of the maximum number of times of transmission of the SR, and the upper layer signal such as RRC is set. May be specified.
- one or more IDs are designated by an upper layer signal such as an RRC as a transmission setting of a URLLC SR using an ID (SchedulingRequestResourceId) indicating a set of a PUCCH resource, a PUCCH format, an SR transmittable cycle and an offset. May be.
- the transmission setting of the SR for URLLC is notified using the set of the transmission setting of the SR and any ID, and a plurality of sets or a plurality of IDs are designated as the transmission setting of the URLLC
- the valid settings may be switched by the BWP switch or the activation / deactivation of the serving cell if the settings are not valid, up to a predetermined number.
- the base station apparatus specifies three sets or IDs as the transmission setting of the SR for URLLC and makes only one valid in the transmission setting of the SR for URLLC, the base station apparatus sets the ID of the SR for valid URLLC.
- the request becomes a URLLC scheduling request
- the SR transmission based on the other two specified SR transmission settings for the URLLC becomes an eMBB scheduling request.
- the associated BWP may be invalid even if the SR transmission setting is performed. Therefore, when a plurality of sets or IDs are designated as the transmission setting of the URLLC SR, priority information is also added, and the set or ID associated with the high priority and valid BWP is assigned to the URLLC SR. Transmission settings may be used.
- the setting of the priority is not the setting information of the SR, but the type (for example, PCell priority) of BWP, serving cell, PCell / PSCell / SCell, the type of cell group (CG) (for example, MCG priority), and whether or not SUL.
- CG cell group
- SUL priority a set subcarrier interval (for example, a wider subcarrier interval takes precedence), or a unit of the set PUCCH format. Note that four BWPs can be set in one serving cell, and only one can be enabled.
- the bandwidth that can be used in a valid BWP switch or a deactivation of a serving cell by a timer or DCI changes.
- the transmission setting of the SR for URLLC can also be switched.
- the RRC message and SIB may include setting information on Compact @ DCI and grant-free access.
- the setting information regarding grant-free access may include assignment of a multi-access signature resource.
- the RRC message and the SIB may include setting information regarding BWP.
- the terminal device 20 When the uplink data of the URLLC is generated, the terminal device 20 generates a signal of the designated PUCCH format SR based on the transmission setting of the URLLC SR (S204).
- the occurrence of the uplink data of the URLLC may mean that the upper layer has provided the transport block of the URLLC data.
- the terminal device 20 transmits an SR signal on the uplink control channel based on the transmission setting of the URLLC SR (S205).
- the base station apparatus 10 When detecting the SR based on the transmission setting of the URLLC SR, the base station apparatus 10 transmits the UL @ Grant for the URLLC in the DCI format to the terminal device 20 on the downlink control channel (S206).
- the UL @ Grant for URLLC may use Compact @ DCI, may repeatedly transmit the same DCI, may specify the scheduling information indicated by UL @ Grant, the method of specifying the MCS, and the method of specifying the HARQ process number. May be different from eMBB data transmission.
- the uplink physical channel and the demodulation reference signal are transmitted (initial transmission) (S207).
- the terminal device 20 uses a physical channel used for data transmission in transmission based on UL @ Grant of dynamic scheduling and transmission based on grant-free access / SPS, and uses resources available at data transmission timing (slot or OFDM symbol). May be transmitted.
- the base station device 10 detects an uplink physical channel transmitted by the terminal device 20 (S208).
- the base station device 10 transmits ACK / NACK to the terminal device 20 using the DCI format on the downlink control channel based on the result of the error detection (S209). If no error is detected in S208, base station apparatus 10 determines that the received uplink data has been correctly received, and transmits ACK. On the other hand, when an error is detected in S208, base station apparatus 10 determines that the received uplink data has been incorrectly received, and transmits NACK.
- ACK / NACK notification for uplink data transmission in the DCI format uses the HARQ process ID and NDI in the DCI format used in the uplink grant. More specifically, when the DCI format including the HARQ process ID that transmitted the data is detected, the NDI has been changed from the previous NDI value when the DCI format of the same HARQ process ID was detected (it is a toggle for one bit).
- ACK (in FIG. 7, the DCI detected in S206 and S209 indicates the same HARQ process ID and ACK if NDI is toggled), and the detected DCI format is for new data transmission. In the case where the NDI value is the same (when the TDI is not toggled), it is a NACK (in FIG. 7, the DCI detected in S206 and S209 indicates the same HARQ process ID, and the NDI has not been toggled). NACK). When the NACK DCI format is detected, the detected DCI format becomes an uplink grant for retransmission data transmission.
- the DCI format for notifying the uplink grant in S206 is based on information on frequency resources (resource blocks, resource block groups, subcarriers) used for uplink data transmission and the slot n where the DCI format is detected on the PDCCH.
- the relative time up to the data transmission timing of the link (for example, if the relative time is k, slot n + k is the uplink data transmission timing) and the number of OFDM symbols used in the slot of the uplink data transmission timing And the start position and the number of consecutive OFDM symbols.
- the uplink grant may notify data transmission of a plurality of slots, and when a relative time indicating uplink data transmission timing is k, data transmission from slot n + k to slot n + k + n ′ is permitted.
- the uplink grant includes the information of n ′.
- the terminal device When the terminal device detects the uplink grant by the blind decoding of the PDCCH, the terminal device transmits the uplink data at the uplink data transmission timing designated by the uplink grant.
- the uplink grant has a HARQ process number (for example, 4 bits), and the terminal device performs data transmission of the uplink grant corresponding to the HARQ process number specified in the uplink grant.
- FIG. 8 shows an example of a sequence chart of uplink data transmission according to configuredntgrant.
- the differences between FIG. 8 and FIG. 7 are S303 and S307 to S309, and the processing of the difference from FIG. 7 will be described.
- the terminal device notifies that the terminal device supports URLLC and eMBB data transmission using UE @ Capability.
- the difference between the data of the eMBB and the URLLC is that the uplink grant is received in the DCI format 0_0 / 0_1 and that the uplink grant is received in the compact DCI composed of a smaller number of control information bits than the DCI format 0_0 / 0_1.
- a table using the lowest frequency utilization efficiency (Spectral efficiency) of the MCS table used for data transmission may be used, a table using a low table may be used, and an MCS table used for data transmission may be used.
- the target block error rate is different
- the case of dynamic scheduling and the case of UL @ SPS / Configured @ grant / grant-free access and HAR
- the number of processes may be 16 and the number of HARQ processes may be 4, or the number of repetitions of data transmission may be equal to or less than a predetermined value (for example, 1 or less) and the number of repetitions may be larger than the predetermined value.
- LCH Logical @ Channel
- QCI QoS @ Class @ Indicator
- the base station apparatus 10 transmits the configured information of the configured $ grant to each of the terminal apparatuses 20 using the RRC message, the SIB, and the like (S303).
- the setting of Configured @ grant may be the above-mentioned Configured GrantConfig, or the Configured GrantConfig may include rrc-ConfiguredGrant or may not include the rrc-ConfiguredGrant.
- the Configured GrantConfig includes rrc-ConfiguredGrant, data transmission is possible without notification (activation) of the DCI format, and notification of the DCI format is received when the ConfiguredGrantConfig does not include the rrc-ConfiguredGrant. Later, data transmission becomes possible.
- the terminal device transmits (initial transmission) the uplink physical channel and the demodulation reference signal based on the configured information of the configured $ grant or the configured information of the configured $ grant and the UL $ Grant for URLLC indicated by DCI (S307). .
- the terminal device starts a configured grant timer which is a NACK detection period when transmitting data using the configured grant configuration information.
- the base station apparatus 10 detects an uplink physical channel based on configured @ grant transmitted by the terminal apparatus 20 (S308). If the detection of the uplink physical channel by the configured grant transmitted by the terminal device 20 has failed, the base station apparatus 10 transmits a NACK in the DCI format before the configured ⁇ Grant ⁇ Timer expires (S309). In the retransmission processing of transmission by configured @ grant, since the processing shifts to dynamic scheduling, the subsequent processing is the same as in FIG. 7 and the description is omitted.
- FIG. 9 shows an example of a sequence chart of uplink data transmission according to configured ⁇ grant.
- FIG. 8 shows a case where data transmission based on configured @ grant is NACK
- FIG. 9 shows a case where data transmission based on configured @ grant is ACK.
- the base station apparatus 10 detects an uplink physical channel based on configured @ grant transmitted by the terminal apparatus 20 (S308).
- the base station apparatus 10 does not notify anything when the uplink physical channel is successfully detected by configured @ grant transmitted from the terminal apparatus 20. That is, the terminal device does not detect the DCI format until the Configured ⁇ Grant ⁇ Timer expires and does not detect the NACK, and thus determines that the ACK has been performed (S310).
- FIG. 8 illustrates an example of setting of a plurality of configured uplink grants included in the RRC message.
- information of individual setting for each uplink BWP called BWP-UplinkDedicated is included in the RRC message, and there are as many as the number of BWPs to be set.
- Each BWP-UplinkDedicated includes Configurated GrantConfig, which is configuration information of the configured uplink grant, and is set for the number of configured uplink grants set in each BWP.
- Configurated GrantConfig is configuration information of the configured uplink grant, and is set for the number of configured uplink grants set in each BWP.
- BWP-UplinkDedicated # 1
- two Configured Grant Configs are set.
- Configured Grant Configs may be set, or the Configurated Grant Configs may not be set.
- ConfiguredGrantConfig includes parameters (Periodicity: cycle, mcs-Table: MCS table, repK: number of repeated transmissions, repK-RV: RV (Redundancy @ Version) pattern at the time of repeated transmission, Etc.) are included.
- the Configured GrantConfig may or may not include the rrc-ConfiguredUplinkGrant.
- the configuration is configured as the configured UL grant type 1 (configured uplink grant type 1), and when the configuration is not included, the configured uplink grant is the uplink grant link configuration.
- rrc-ConfiguredUplinkGrant includes parameters (TimeDomainAllocation: time-axis transmission resource allocation, TimeDomainOffset: time-axis transmission start offset, Frequency-domain transmission Offset: TBS, frequency-direction transmission axis) related to uplink data transmission by the configured uplink grant type 1. Modulation scheme / coding rate and transport block size).
- Configured GrantConfig without the rrc-ConfiguredUplinkGrant, that is, in the case of the configured uplink grant type 2, all or part of the contents of the rrc-ConfiguredUplinkGrant is separately notified by the DCI.
- the parameters included in the Configured GrantConfig and the rrc-ConfiguredUplinkGrant are not limited to those described in FIG. 8, and other parameters may or may not be included. If not included, a predetermined value may be used implicitly. The names of the parameters are not limited to these. When a plurality of Configured Grant Configs are set, different values may be set for each of the parameters included in the Configurable Grant Config, or the same values may be set for each of the Configurable Grant Configs.
- FIG. 9 illustrates an example in which the terminal device 20 allocates transmission resources (transmission opportunities) using a plurality of configured uplink grants according to an RRC message in which a plurality of Configured GrantConfig is included in one uplink BWP setting (BWP-UplinkDedicated). Is illustrated. Here, it is assumed that two configured uplink grants, a configured uplink grant A and a configured uplink grant B, have been set. In a CG (Configured UL Grant) (A) transmission opportunity and a CG (B) transmission opportunity, each square represents a transmission opportunity (TO: Transmission @ Opportunity), and a resource for transmitting uplink data by each configured uplink grant. Is assigned. The character strings in the squares are conveniently described for identifying each transmission opportunity.
- a # 00 indicates the 0th transmission opportunity of the repeated transmission number of the 0th uplink data of the configured uplink grant A.
- one uplink data transmission resource of each configured uplink grant is allocated at transmission opportunities for the number of continuous repetition transmissions.
- the repetition transmission number indicates the number of repetition transmissions of one uplink data, and does not indicate the redundancy version (RV: Redundancy @ Version) itself.
- RV a value corresponding to the repetition transmission number from the RV pattern specified by the RRC message is used.
- transmission opportunities may conflict with each other in time.
- a # 10 and B # 00, A # 20 and B # 11, and A # 21 and B # 12 temporally compete.
- transmission opportunities conflict it is possible to transmit both at the same time, but this is not preferable from the viewpoint of PAPR increase and the like. Therefore, a measure for selecting and transmitting one of them is required.
- the configuration is performed in the order of the configured uplink grant A and the configured uplink grant B, and when a competition of the transmission opportunity occurs, the transmission opportunity of the configured uplink grant B in the later order is repeated later.
- An example is shown in which everything is skipped, including transmission.
- the upper row shows the transmission opportunity before correction, that is, the transmission opportunity according to the setting of the RRC message
- the lower row shows the transmission opportunity after correction, that is, the transmission opportunity after skipping at the time of contention in the order described above.
- the transmission opportunity to be skipped is represented by a black square. According to the above-described order, all of B # 00 to B # 03 including B # 00 competing with A # 01 are skipped. Also, B # 11 and B # 12 competing with A # 20 and A # 21, respectively, are skipped, and transmission opportunities for subsequent repeated transmission are also skipped. In FIG. 9, all transmission opportunities from B # 00 to B # 03 are skipped, and no transmission is performed. Therefore, the transmission is controlled to be performed at the next transmission opportunity B # 10 and thereafter.
- a method of determining the order of transmission with priority may be used in which the setting order of the Configured GrantConfig in the RRC message is an order.
- a method may be used in which the order is determined from parameters in each Configured Grant Config.
- the MCS table may prioritize the configured uplink grant set in the URLLC MCS table.
- a parameter indicating a priority may be introduced into each Configured GrantConfig, and the order may be determined according to the priority.
- the transmission opportunities of the respective configured uplink grants compete with each other. Even in this case, transmission can be performed appropriately.
- FIG. 10 illustrates a case where the configured uplink grant A and the configured uplink grant B are set as in FIG. 9, and the same applies to competing transmission opportunities.
- B # 00 is skipped. Since the subsequent B # 01 to B # 03 do not compete with each other, they are used for transmission without skipping. Note that the repeated transmission number remains unchanged. Similarly, B # 11 and B # 12 competing with A # 20 and A # 21 are skipped, but B # 10 and B # 13 have the same repeated transmission number.
- FIG. 11 illustrates a case where the configured uplink grant A and the configured uplink grant B are set similarly to FIG. 10, and the same applies to competing transmission opportunities.
- the transmission opportunity B # 00 is shifted to the timing of the transmission opportunity B # 01 at which the transmission opportunity of A # 01 ends.
- transmission opportunity B # 01 is shifted to the timing of B # 02, and B # 02 is shifted to the timing of B # 03.
- FIG. 12 illustrates a case where the configured uplink grant A and the configured uplink grant B are set similarly to FIGS. 9, 10 and 11, and the same applies to competing transmission opportunities.
- the CG (A) transmission opportunity the lower part shows the transmission opportunity before the correction, that is, the transmission opportunity according to the setting of the RRC message, and the upper part shows the transmission opportunity after the correction, that is, after performing the skip or the shift in the conflict. .
- FIG. 13 illustrates a case where the configured uplink grant A and the configured uplink grant B are set as in FIG. 12, and the same applies to competing transmission opportunities.
- B # 00 is skipped in order to give priority to the transmission opportunity of the uplink data transmission of the configured uplink grant A already started from A # 00.
- the transmission opportunities B # 01, B # 02, and B # 03 that have no contention are used as they are for the transmission of the uplink data of the configured uplink grant B.
- transmission opportunities A # 20 and B # 11 and A # 21 and B # 12 compete with each other, priority is given to the transmission opportunity of the uplink data transmission of the configured uplink grant B already started from B # 10. Therefore, transmission opportunities A # 20 and A # 21 are skipped. Note that the uplink data of the configured uplink grant A that was to be transmitted at transmission opportunities A # 20 and A # 21 is rescheduled for transmission at the next transmission opportunity.
- FIG. 14 illustrates a case where the configured uplink grant A and the configured uplink grant B are set similarly to FIG. 12, and the same applies to competing transmission opportunities.
- the transmission opportunities A # 01 and B # 00 compete, the transmission opportunity of A # 01 is prioritized for the transmission opportunity of the uplink data transmission of the configured uplink grant A already started from A # 00.
- the transmission opportunity B # 00 is shifted to the timing of the transmission opportunity B # 01, which is the timing when the processing ends.
- transmission opportunity B # 01 is shifted to the timing of B # 02, and B # 02 is shifted to the timing of B # 03. Since the transmission opportunity B # 03 before correction cannot be shifted, it is canceled.
- transmission opportunities A # 20 and B # 11 and A # 21 and B # 12 compete with each other, priority is given to the transmission opportunity of the uplink data transmission of the configured uplink grant B already started from B # 10. I do. However, since A # 20 and A # 21 cannot be shifted, they are canceled. Note that the uplink data of the configured uplink grant A that was scheduled to be transmitted at transmission opportunities A # 20 and A # 21 is rescheduled for transmission at the next transmission opportunity.
- the length of the transmission opportunity (the number of transmission opportunities) used for transmitting one uplink data of the configured uplink grant is defined by ConfiguredLength.
- the number is 6, but the number is not limited to 6.
- the value of the Configured Length may be notified by an RRC message or DCI, or a value implicitly determined in advance may be used.
- the number of repetitions (repK) is set to 4
- the RV pattern (repK-RV) is set to “0231”.
- the number of RVs (numRV) is four.
- the number of RVs is four.
- FIG. 15 illustrates four transmission patterns a to d as examples.
- the squares represent individual transmission opportunities, and the numbers described in the squares represent RV.
- Arbitrary continuous transmission opportunities may be used as in the transmission patterns a to c, or discontinuous transmission opportunities may be used as in the transmission pattern d.
- a value corresponding to the repetition transmission number from the RV pattern is used as the RV used in each transmission opportunity.
- the method of determining the length of the transmission opportunity used for one uplink data transmission is not limited to the method of FIG.
- an example in which the number obtained by multiplying the number of RVs (numRV) by the ConfiguredLength is the length of the transmission opportunity (the number of transmission opportunities) used for transmitting one uplink data of the configured uplink grant.
- FIG. 17 shows an example in which the number obtained by multiplying the number of repetitions (repK) by Configured Length is the length of the transmission opportunity (the number of transmission opportunities) used for transmitting one uplink data of the configured uplink grant.
- repK number of repetitions
- the number obtained by adding the configured length to the number of repeated transmissions (repK) is the length of the transmission opportunity (the number of transmission opportunities) used for transmitting one uplink data of the configured uplink grant.
- the length of the transmission opportunity (the number of transmission opportunities) used for one uplink data transmission of the configured uplink grant there are various determination methods for the length of the transmission opportunity (the number of transmission opportunities) used for one uplink data transmission of the configured uplink grant, and the method is not limited to the above example.
- FIG. 19 illustrates that the terminal device 20 allocates a transmission resource (transmission opportunity) by a plurality of configured uplink grants according to an RRC message in which a plurality of Configured GrantConfigs are included in one uplink BWP setting (BWP-UplinkDedicated) and a ConfiguredLength. It is a diagram illustrating an example of the operation performed.
- FIG. 19 illustrates that the terminal device 20 allocates a transmission resource (transmission opportunity) by a plurality of configured uplink grants according to an RRC message in which a plurality of Configured GrantConfigs are included in one uplink BWP setting (BWP-UplinkDedicated) and a ConfiguredLength.
- CG configured uplink grants
- a and B are set, and CG (A) is set with Configured Length: 4, repK: 2, Periodicity: 5, and CG (B) Is set with Configured Length: 6, repK: 4, Periodicity: 8.
- the squares represent each transmission opportunity, the white squares represent transmission opportunities actually used for transmission, and the black squares represent transmission opportunities not used for transmission.
- the numbers in the squares are provided for convenience to identify each transmission opportunity. For example, “A # 12” is used for the first uplink data transmission of the configured uplink grant A. It represents the second transmission opportunity of the transmission opportunity. As shown in FIG. 19, by appropriately selecting the transmission opportunity of the transmission-configured uplink grant A and the transmission opportunity of the configured uplink grant B to be actually used for uplink data transmission, the transmission opportunity of the transmission grant Conflicts can be avoided.
- embodiments of the present specification may be applied by combining a plurality of embodiments, or may be applied only to each embodiment.
- the program that operates on the device according to the present invention may be a program that controls a Central Processing Unit (CPU) and the like to cause a computer to function so as to realize the functions of the above-described embodiment according to the present invention.
- the program or information handled by the program is temporarily read into a volatile memory such as a Random Access Memory (RAM) during processing, or is stored in a non-volatile memory such as a flash memory or a Hard Disk Drive (HDD). In response, reading, correction and writing are performed by the CPU.
- a volatile memory such as a Random Access Memory (RAM) during processing
- a non-volatile memory such as a flash memory or a Hard Disk Drive (HDD).
- HDD Hard Disk Drive
- a part of the device in the above-described embodiment may be realized by a computer.
- a program for implementing the functions of the embodiments may be recorded on a computer-readable recording medium.
- the program may be realized by causing a computer system to read and execute the program recorded on the recording medium.
- the “computer system” is a computer system built in the device, and includes an operating system and hardware such as peripheral devices.
- the “computer-readable recording medium” may be any of a semiconductor recording medium, an optical recording medium, a magnetic recording medium, and the like.
- ⁇ The“ computer system ” also includes a homepage providing environment (or display environment) if a WWW system is used.
- a "computer-readable recording medium” is a medium that dynamically holds a program for a short time, such as a communication line for transmitting a program through a network such as the Internet or a communication line such as a telephone line.
- a program holding a program for a certain period of time such as a volatile memory in a computer system serving as a server or a client, may be included.
- the above-mentioned program may be for realizing a part of the above-mentioned functions, or may be for realizing the above-mentioned functions in combination with a program already recorded in a computer system.
- each functional block or various features of the device used in the above-described embodiments can be implemented or executed by an electric circuit, that is, typically, an integrated circuit or a plurality of integrated circuits.
- An electrical circuit designed to perform the functions described herein may be a general purpose processor, digital signal processor (DSP), application specific integrated circuit (ASIC), field programmable gate array (FPGA), or other Logic devices, discrete gate or transistor logic, discrete hardware components, or a combination thereof.
- a general purpose processor may be a microprocessor, or may be a conventional processor, controller, microcontroller, or state machine.
- the above-described electric circuit may be configured by a digital circuit or an analog circuit. In the case where a technology for forming an integrated circuit that replaces the current integrated circuit appears due to the progress of semiconductor technology, an integrated circuit based on the technology can be used.
- the present invention is not limited to the above embodiment.
- an example of the device is described.
- the present invention is not limited to this, and stationary or non-movable electronic devices installed indoors and outdoors, for example, AV devices, kitchen devices, It can be applied to terminal devices or communication devices such as cleaning / washing equipment, air conditioning equipment, office equipment, vending machines, and other living equipment.
- the present invention is suitable for use in wired and wireless communication systems and communication devices.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
図1は、本実施形態に係る通信システムの構成例を示す図である。本実施形態における通信システムは、基地局装置10、端末装置20-1~20-n1(n1は基地局装置10と接続している端末装置数)を備える。端末装置20-1~20-n1を総称して端末装置20とも称する。カバレッジ10aは、基地局装置10が端末装置20と接続可能な範囲(通信エリア)である(セルとも呼ぶ)。
・物理上りリンク制御チャネル(PUCCH)
・物理上りリンク共有チャネル(PUSCH)
・物理ランダムアクセスチャネル(PRACH)
・物理報知チャネル(PBCH)
・物理下りリンク制御チャネル(PDCCH)
・物理下りリンク共有チャネル(PDSCH)
本実施形態では、複数の構成済み上りリンクグラントの送信機会が競合した場合に、順序が下位の構成済み上りリンクグラントの競合した送信機会のみをスキップする方法の一例について説明する。図10は、図9と同様に構成済み上りリンクグラントAと構成済み上りリンクグラントBが設定された場合を図示しており、競合する送信機会も同様である。まず、送信機会A#01とB#00が競合した場合、B#00がスキップされる。その後のB#01からB#03までは競合していないので、スキップされずそのまま送信に用いられる。なお、繰り返し送信番号もそのままである。同様に、A#20、A#21と競合するB#11、B#12はスキップされるが、B#10およびB#13は繰り返し送信番号もそのままである。
本実施形態では、複数の構成済み上りリンクグラントの送信機会が競合した場合に、順序が下位の構成済み上りリンクグラントの競合した送信機会をシフトする方法の一例について説明する。図11は、図10と同様に構成済み上りリンクグラントAと構成済み上りリンクグラントBが設定された場合を図示していて、競合する送信機会も同様である。まず、送信機会A#01とB#00が競合した場合、A#01の送信機会が終了するタイミングである送信機会B#01のタイミングに送信機会B#00をシフトする。以降、送信機会B#01をB#02のタイミングに、B#02をB#03のタイミングにそれぞれシフトする。補正前の送信機会B#03はシフトできないので、キャンセルされる。同様に、A#20と競合するB#11は、A#21が終了するタイミングである送信機会B#13のタイミングまでシフトされる。A#21と競合するB#12、およびB#13はシフト不可となるので、キャンセルされる。
本実施形態では、複数の構成済み上りリンクグラントの送信機会が競合した場合に、先行する構成済み上りリンクグラントの送信機会を優先する方法を説明する。図12は図9、10、11と同様に構成済み上りリンクグラントAと構成済み上りリンクグラントBが設定された場合を図示していて、競合する送信機会も同様である。なお、CG(A)送信機会については、下段が補正前、すなわちRRCメッセージの設定に従った送信機会、上段が補正後、すなわち競合時にスキップやシフトなどを行った後の送信機会を表している。まず、送信機会A#01とB#00が競合した場合、すでにA#00から開始されている構成済み上りリンクグラントAの上りリンクデータ送信の送信機会を優先するため、B#00をスキップし、また残りの繰り返し送信で使用されるB#01、B#02およびB#03もすべてスキップする。なお、送信機会B#00からB#03で送信される予定だった構成済み上りリンクグラントBの上りリンクデータは、次の送信機会での送信に再スケジューリングされる(本実施形態では送信機会B#10からB#13)。次に送信機会A#20とB#11、およびA#21とB#12が競合した場合、すでにB#10から開始されている構成済み上りリンクグラントBの上りリンクデータ送信の送信機会を優先するため、送信機会A#20とA#21はスキップされる。なお、送信機会A#20およびA#21で送信される予定だった構成済み上りリンクグラントAの上りリンクデータは、次の送信機会での送信に再スケジューリングされる。
本実施形態では、複数の構成済み上りリンクグラントの送信機会が競合した場合に、先行する構成済み上りリンクグラントの送信機会を優先し、競合する送信機会のみをスキップする方法を説明する。図13は図12と同様に構成済み上りリンクグラントAと構成済み上りリンクグラントBが設定された場合を図示していて、競合する送信機会も同様である。まず、送信機会A#01とB#00が競合した場合、すでにA#00から開始されている構成済み上りリンクグラントAの上りリンクデータ送信の送信機会を優先するため、B#00をスキップするが、競合がない送信機会B#01、B#02およびB#03は、そのまま構成済み上りリンクグラントBの上りリンクデータの送信に使用される。次に送信機会A#20とB#11、およびA#21とB#12が競合した場合、すでにB#10から開始されている構成済み上りリンクグラントBの上りリンクデータ送信の送信機会を優先するため、送信機会A#20とA#21はスキップされる。なお、送信機会A#20およびA#21で送信される予定だった構成済み上りリンクグラントAの上りリンクデータは、次の送信機会での送信に再スケジューリングされる。
本実施形態では、複数の構成済み上りリンクグラントの送信機会が競合した場合に、先行する構成済み上りリンクグラントの送信機会を優先し、競合する送信機会をシフトする方法の一例を説明する。図14は図12と同様に構成済み上りリンクグラントAと構成済み上りリンクグラントBが設定された場合を図示していて、競合する送信機会も同様である。まず、送信機会A#01とB#00が競合した場合、すでにA#00から開始されている構成済み上りリンクグラントAの上りリンクデータ送信の送信機会を優先するため、A#01の送信機会が終了するタイミングである送信機会B#01のタイミングに送信機会B#00をシフトする。以降、送信機会B#01をB#02のタイミングに、B#02をB#03のタイミングにそれぞれシフトする。補正前の送信機会B#03はシフトできないので、キャンセルされる。次に送信機会A#20とB#11、およびA#21とB#12が競合した場合、すでにB#10から開始されている構成済み上りリンクグラントBの上りリンクデータ送信の送信機会を優先する。しかし、A#20とA#21はシフトできないので、キャンセルされる。なお、送信機会A#20およびA#21で送信される予定だった構成済み上りリンクグラントAの上りリンクデータは、次の送信機会での送信として再スケジューリングされる。
次に、構成済み上りリンクグラントの一つの上りリンクデータ送信に使用する送信機会の長さを繰り返し送信回数よりも多く割り当てる方法の一例について説明する。図15は構成済み上りリンクグラントの一つの上りリンクデータ送信に使用する送信機会の長さ(送信機会の個数)をConfiguredLengthで定めている。ここでは6としているが、これに限るものではない。ConfiguredLengthの値はRRCメッセージあるいはDCIなどによって通知されてもよいし、予め暗黙的に決められた値を使用してもよい。また、例として繰り返し送信回数(repK)を4、RVパターン(repK-RV)を「0231」とする。この場合、RVの数(numRV)は4となる。一つの上りリンクデータ送信に割り当てられたすべての送信機会のうち、任意のrepK個の送信機会を使用して上りリンクデータの繰り返し送信が可能とする。図15では、例として4つの送信パターンa~dを図示している。なお、四角は個々の送信機会を表し、四角の中に記載している数字は、RVを表している。送信パターンa~cのように、任意の連続する送信機会を使用してもよいし、送信パターンdのように不連続な送信機会を使用してもよい。その際、個々の送信機会で使用されるRVは、RVパターンの中から繰り返し送信番号に対応した値が使用される。
Claims (8)
- 基地局装置および端末装置を少なくとも含む通信システムの端末装置であって、
RRCからのRRCメッセージに従って上りリンクデータ送信設定を行う制御部と、
前記上りリンクデータ送信設定に従って上りリンクデータの送信を行う送信部を備え、
前記RRCメッセージはBWP毎に少なくとも第1および第2の構成済み上りリンクグラントを含む複数の構成済み上りリンクグラントの設定情報を含み、
前記複数の構成済み上りリンクグラントの設定情報は、第1および第2の構成済み上りリンクグラントの送信区間の設定情報を含み、
前記制御部は、前記RRCメッセージに含まれる前記BWP毎の複数の構成済み上りリンクグラント設定情報に従ってBWP毎に複数の構成済み上りリンクグラントを設定し、
前記送信部は、前記第1および第2の構成済み上りリンクグラントのそれぞれの送信区間の少なくとも一部が重複した場合、前記第1と第2の構成済み上りリンクグラントによる上りリンクデータ送信のいずれかを中断して、他方の上りリンクデータ送信を行う
ことを特徴とする、端末装置。 - 前記送信部は、前記第1と第2の構成済み上りリンクグラントによる上りリンクデータ送信のいずれかを中断して他方の上りリンクデータ送信が完了した後に、中断した上りリンクデータ送信を再開する
ことを特徴とする、請求項1記載の端末装置。 - 前記送信部は、前記中断した構成済み上りリンクグラントによる前記上りリンクデータ送信を再開後、前記中断した構成済み上りリンクグラントの前記送信区間が終了するまで前記上りリンクデータ送信を行う
ことを特徴とする、請求項1から2記載の端末装置。 - 前記送信部は、前記中断した構成済み上りリンクグラントによる前記上りリンクデータ送信を再開後、前記構成済み上りリンクグラントの繰り返し送信回数設定に達するまで前記上りリンクデータ送信を行う
ことを特徴とする、請求項1から2記載の端末装置。 - 前記制御部は、前記第1および第2の構成済み上りリンクグラントのそれぞれの送信区間の少なくとも一部が重複した場合に、どちらを中断するかを前記RRCメッセージに含まれる前記複数の構成済み上りリンクグラントの設定情報によって順序を決定し、前記送信部は、前記制御部が決定した前記順序にしたがって、第1または第2の構成済み上りリンクグラントによる上りリンクデータ送信のいずれかを中断する
ことを特徴とする、請求項1から4記載の端末装置。 - 前記制御部は、前記複数の構成済み上りリンクグラントの設定情報に含まれるMCSテーブル設定などのパラメータによって前記順序を決定する
ことを特徴とする、請求項1から5記載の端末装置。 - 前記制御部は、前記複数の構成済み上りリンクグラントの設定情報の設定順によって前記順序を決定する
ことを特徴とする、請求項1から5記載の端末装置。 - 前記制御部は、前記複数の構成済み上りリンクグラントの設定情報に含まれる優先度によって前記順序を決定する
ことを特徴とする、請求項1から5記載の端末装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19860721.0A EP3852476A4 (en) | 2018-09-11 | 2019-09-10 | TERMINAL |
CN201980059361.4A CN112673700B (zh) | 2018-09-11 | 2019-09-10 | 终端装置 |
US17/275,168 US20210368534A1 (en) | 2018-09-11 | 2019-09-10 | Terminal device |
BR112021004405-1A BR112021004405A2 (pt) | 2018-09-11 | 2019-09-10 | dispositivo terminal |
SG11202102516TA SG11202102516TA (en) | 2018-09-11 | 2019-09-10 | Terminal device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018-169582 | 2018-09-11 | ||
JP2018169582A JP7199184B2 (ja) | 2018-09-11 | 2018-09-11 | 通信システムおよび通信装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020054693A1 true WO2020054693A1 (ja) | 2020-03-19 |
Family
ID=69778389
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2019/035470 WO2020054693A1 (ja) | 2018-09-11 | 2019-09-10 | 端末装置 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20210368534A1 (ja) |
EP (1) | EP3852476A4 (ja) |
JP (1) | JP7199184B2 (ja) |
CN (1) | CN112673700B (ja) |
BR (1) | BR112021004405A2 (ja) |
SG (1) | SG11202102516TA (ja) |
WO (1) | WO2020054693A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022152269A1 (zh) * | 2021-01-15 | 2022-07-21 | 维沃移动通信有限公司 | 配置授权的配置的处理方法、装置、设备及存储介质 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220116985A1 (en) * | 2019-01-11 | 2022-04-14 | Ntt Docomo, Inc. | User terminal and radio communication method |
US11611981B2 (en) * | 2019-10-18 | 2023-03-21 | Qualcomm Incorporated | UE feedback of content processing time for bi-directional traffic |
BR112022015564A2 (pt) * | 2020-02-10 | 2022-09-27 | Ericsson Telefon Ab L M | Método e aparelho para acesso aleatório |
US11758551B2 (en) * | 2020-04-24 | 2023-09-12 | Qualcomm Incorporated | Cancellation of transmission occasions |
US11917689B2 (en) * | 2020-07-07 | 2024-02-27 | Qualcomm Incorporated | Redundancy version (RV) determination for message repetition |
US11968148B2 (en) * | 2020-08-06 | 2024-04-23 | Lg Electronics Inc. | Method and apparatus for transmitting or receiving HARQ feedback for multicast/broadcast signal |
US20220217713A1 (en) * | 2021-01-06 | 2022-07-07 | Qualcomm Incorporated | Latency reduction and coverage enhancement for extended reality |
US11528635B2 (en) * | 2021-01-12 | 2022-12-13 | Verizon Patent And Licensing Inc. | Method and system for radio resource management and network slicing |
US11722170B2 (en) * | 2021-04-06 | 2023-08-08 | Qualcomm Incorporated | Frequency-hopping with zero offset for indication of no joint channel estimation |
WO2023029003A1 (en) * | 2021-09-03 | 2023-03-09 | Apple Inc. | Configured grant enhancement |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018169582A (ja) | 2017-03-30 | 2018-11-01 | 古河電気工業株式会社 | 光ファイバアレイ |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9451631B2 (en) * | 2013-08-14 | 2016-09-20 | Lg Electronics Inc. | Method and apparatus for transmitting signal in device-to-device communication |
SG10201913454UA (en) * | 2015-09-18 | 2020-03-30 | Sharp Kk | Terminal device, base station device, communication method, and integrated circuit |
ES2824475T3 (es) * | 2016-05-12 | 2021-05-12 | Asustek Comp Inc | Transmisión de enlace ascendente en intervalos de tiempo de transmisión acortados en un sistema de comunicación inalámbrico |
US10728927B2 (en) * | 2016-11-11 | 2020-07-28 | FG Innovation Company Limited | Data packet delivery in RRC inactive state |
US20180176937A1 (en) * | 2016-12-16 | 2018-06-21 | Asustek Computer Inc. | Method and apparatus of handling multiple uplink resource collisions in a wireless communication system |
ES2962256T3 (es) * | 2018-01-12 | 2024-03-18 | Nokia Technologies Oy | Informe periódico de múltiples células/CSI de SPS para la red inalámbrica |
US10756852B2 (en) * | 2018-02-15 | 2020-08-25 | Ofinno, Llc | Control element trigger |
TWI702871B (zh) * | 2018-04-03 | 2020-08-21 | 財團法人資訊工業策進會 | 用於行動通訊系統之使用者裝置及基地台 |
-
2018
- 2018-09-11 JP JP2018169582A patent/JP7199184B2/ja active Active
-
2019
- 2019-09-10 US US17/275,168 patent/US20210368534A1/en active Pending
- 2019-09-10 BR BR112021004405-1A patent/BR112021004405A2/pt unknown
- 2019-09-10 SG SG11202102516TA patent/SG11202102516TA/en unknown
- 2019-09-10 EP EP19860721.0A patent/EP3852476A4/en active Pending
- 2019-09-10 CN CN201980059361.4A patent/CN112673700B/zh active Active
- 2019-09-10 WO PCT/JP2019/035470 patent/WO2020054693A1/ja unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018169582A (ja) | 2017-03-30 | 2018-11-01 | 古河電気工業株式会社 | 光ファイバアレイ |
Non-Patent Citations (5)
Title |
---|
"Cellular system support for ultra-low complexity and low throughput Internet of Things (CIoT", 3GPP, TR45.820 V13.0.0, August 2015 (2015-08-01) |
"Physical layer procedures for data (Release 15", 3GPP, TS38.214 V15.1.0, March 2018 (2018-03-01) |
"Study on provision of low-cost Machine-Type Communications (MTC) User Equipments (UEs) based on LTE", 3GPP, TR36.888 VI2.0.0, June 2013 (2013-06-01) |
OPPO: "Remaining issues on transmission collision", 3GPP TSG RAN WG1 ADHOC_NR_AH_1801 R1-1800512, 13 January 2018 (2018-01-13), XP051384902, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_AH/NR_AH_1801/Docs/R1-1800512.zip> [retrieved on 20191112] * |
See also references of EP3852476A4 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022152269A1 (zh) * | 2021-01-15 | 2022-07-21 | 维沃移动通信有限公司 | 配置授权的配置的处理方法、装置、设备及存储介质 |
Also Published As
Publication number | Publication date |
---|---|
JP2020043470A (ja) | 2020-03-19 |
CN112673700B (zh) | 2024-05-07 |
BR112021004405A2 (pt) | 2021-07-20 |
JP7199184B2 (ja) | 2023-01-05 |
US20210368534A1 (en) | 2021-11-25 |
CN112673700A (zh) | 2021-04-16 |
EP3852476A1 (en) | 2021-07-21 |
EP3852476A4 (en) | 2022-06-15 |
SG11202102516TA (en) | 2021-04-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2020031983A1 (ja) | 端末装置および基地局装置 | |
US11265912B2 (en) | Terminal apparatus | |
WO2020054693A1 (ja) | 端末装置 | |
US11937263B2 (en) | Terminal apparatus for transmitting data using uplink grants | |
WO2019194270A1 (ja) | 端末装置 | |
JP6723388B2 (ja) | 基地局装置、端末装置およびその通信方法 | |
WO2019208774A1 (ja) | 端末装置 | |
WO2019138912A1 (ja) | 基地局装置および端末装置 | |
WO2017195815A1 (ja) | 基地局装置、端末装置およびその通信方法 | |
WO2019150889A1 (ja) | 基地局装置および端末装置 | |
JP2020031260A (ja) | 基地局装置、端末装置およびその通信方法 | |
WO2019031603A1 (ja) | 端末装置および通信方法 | |
WO2018123720A1 (ja) | 基地局装置、端末装置およびその通信方法 | |
JP2019125823A (ja) | 送信装置および受信装置 |
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: 19860721 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112021004405 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: 2019860721 Country of ref document: EP Effective date: 20210412 |
|
ENP | Entry into the national phase |
Ref document number: 112021004405 Country of ref document: BR Kind code of ref document: A2 Effective date: 20210309 |