WO2022201462A1 - 端末、無線通信システム及び無線通信方法 - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present disclosure relates to a terminal, a base station, and a wireless communication method that perform wireless communication, and particularly to a terminal, a wireless communication system, and a wireless communication method related to reporting of power reserve information.
- the 3rd Generation Partnership Project (3GPP) has specified the 5th generation mobile communication system (also called 5G, New Radio (NR) or Next Generation (NG)), and the next generation specification called Beyond 5G, 5G Evolution or 6G We are also proceeding with 5G, 5G Evolution or 6G We are also proceeding with 5G, 5G Evolution or 6G We are also proceeding with 5G, 5G Evolution or 6G We are also proceeding with 5G, 5G Evolution or 6G We are also proceeding with 5G, 5G Evolution or 6G
- 3GPP Release 15 supports simultaneous transmission of two or more uplink channels (PUCCH (Physical Uplink Control Channel) and PUSCH (Physical Uplink Shared Channel)) transmitted in the same slot.
- PUCCH Physical Uplink Control Channel
- PUSCH Physical Uplink Shared Channel
- Non-Patent Document 1 UCI (Uplink Control Information) with different priorities to PUSCH.
- the object is to provide a communication system and a wireless communication method.
- the present disclosure is a terminal, a control unit that multiplexes two or more pieces of uplink control information having different priorities into an uplink shared channel, and the uplink sharing in which the two or more pieces of uplink control information are multiplexed. and a communication unit that transmits an uplink signal using a channel, wherein the control unit determines resources for the two or more uplink control information based on a method of specifying.
- the present disclosure is a wireless communication system comprising a terminal and a base station, wherein the terminal includes a control unit that multiplexes two or more pieces of uplink control information having different priorities into an uplink shared channel, and the two or more pieces of and a communication unit that transmits an uplink signal using the uplink shared channel in which uplink control information is multiplexed, and the control unit is configured to specify resources of the two or more uplink control information based on a method of specifying.
- the gist is that the
- the present disclosure is a wireless communication method, comprising a step A of multiplexing two or more pieces of uplink control information having different priorities into an uplink shared channel; and Step B of transmitting an uplink signal using a link shared channel, wherein said step A includes a step of determining said two or more uplink control information resources based on an identification method.
- FIG. 1 is an overall schematic configuration diagram of a radio communication system 10.
- FIG. 2 is a diagram illustrating frequency ranges used in wireless communication system 10.
- FIG. 3 is a diagram showing a configuration example of radio frames, subframes and slots used in the radio communication system 10.
- FIG. 4 is a functional block configuration diagram of UE200.
- FIG. 5 is a functional block configuration diagram of gNB100.
- FIG. 6 is a diagram for explaining rate matching.
- FIG. 7 is a diagram for explaining rate matching.
- FIG. 8 is a diagram for explaining rate matching.
- FIG. 9 is a diagram showing an operation example.
- FIG. 10 is a diagram showing an example of the hardware configuration of gNB100 and UE200.
- FIG. 1 is an overall schematic configuration diagram of a radio communication system 10 according to an embodiment.
- the radio communication system 10 is a radio communication system according to 5G New Radio (NR), and includes a Next Generation-Radio Access Network 20 (hereinafter NG-RAN 20 and a terminal 200 (hereinafter UE 200).
- NR 5G New Radio
- NG-RAN 20 Next Generation-Radio Access Network
- UE 200 terminal 200
- the wireless communication system 10 may be a wireless communication system according to a system called Beyond 5G, 5G Evolution, or 6G.
- NG-RAN 20 includes a radio base station 100A (hereinafter gNB100A) and a radio base station 100B (hereinafter gNB100B).
- gNB100A radio base station 100A
- gNB100B radio base station 100B
- the specific configuration of the radio communication system 10 including the number of gNBs and UEs is not limited to the example shown in FIG.
- NG-RAN 20 actually includes multiple NG-RAN Nodes, specifically gNBs (or ng-eNBs), and is connected to a 5G-compliant core network (5GC, not shown). Note that NG-RAN 20 and 5GC may simply be referred to as a "network”.
- gNBs or ng-eNBs
- 5GC 5G-compliant core network
- gNB100A and gNB100B are 5G-compliant radio base stations and perform 5G-compliant radio communication with UE200.
- gNB100A, gNB100B and UE200 generate BM beams with higher directivity by controlling radio signals transmitted from multiple antenna elements Massive MIMO (Multiple-Input Multiple-Output), multiple component carriers (CC ), and dual connectivity (DC) that simultaneously communicates with two or more transport blocks between the UE and each of the two NG-RAN Nodes.
- Massive MIMO Multiple-Input Multiple-Output
- CC multiple component carriers
- DC dual connectivity
- the wireless communication system 10 supports multiple frequency ranges (FR).
- FIG. 2 shows the frequency ranges used in wireless communication system 10. As shown in FIG.
- the wireless communication system 10 supports FR1 and FR2.
- the frequency bands of each FR are as follows.
- FR1 410MHz to 7.125GHz
- FR2 24.25 GHz to 52.6 GHz
- SCS Sub-Carrier Spacing
- BW bandwidth
- FR2 is higher frequency than FR1 and may use an SCS of 60 or 120 kHz (240 kHz may be included) and a bandwidth (BW) of 50-400 MHz.
- SCS may be interpreted as numerology.
- numerology is defined in 3GPP TS38.300 and corresponds to one subcarrier spacing in the frequency domain.
- the wireless communication system 10 also supports frequency bands higher than the FR2 frequency band. Specifically, the wireless communication system 10 supports frequency bands above 52.6 GHz and up to 71 GHz or 114.25 GHz. Such high frequency bands may be conveniently referred to as "FR2x".
- Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM)/ Discrete Fourier Transform - Spread (DFT-S-OFDM) may be applied.
- FIG. 3 shows a configuration example of radio frames, subframes and slots used in the radio communication system 10.
- one slot consists of 14 symbols, and the larger (wider) the SCS, the shorter the symbol period (and slot period).
- the SCS is not limited to the intervals (frequencies) shown in FIG. For example, 480 kHz, 960 kHz, etc. may be used.
- the number of symbols forming one slot does not necessarily have to be 14 symbols (for example, 28 or 56 symbols). Furthermore, the number of slots per subframe may vary between SCSs.
- time direction (t) shown in FIG. 3 may be called the time domain, symbol period, symbol time, or the like.
- the frequency direction may be called a frequency domain, resource block, subcarrier, bandwidth part (BWP), or the like.
- DMRS is a type of reference signal and is prepared for various channels.
- it may mean a downlink data channel, specifically DMRS for PDSCH (Physical Downlink Shared Channel).
- DMRS for PDSCH Physical Downlink Shared Channel
- an uplink data channel specifically, a DMRS for PUSCH (Physical Uplink Shared Channel) may be interpreted in the same way as a DMRS for PDSCH.
- DMRS can be used for channel estimation in devices, eg, UE 200, as part of coherent demodulation.
- DMRS may reside only in resource blocks (RBs) used for PDSCH transmission.
- a DMRS may have multiple mapping types. Specifically, DMRS has mapping type A and mapping type B. For mapping type A, the first DMRS is placed in the 2nd or 3rd symbol of the slot. In mapping type A, the DMRS may be mapped relative to slot boundaries, regardless of where in the slot the actual data transmission begins. The reason the first DMRS is placed in the second or third symbol of the slot may be interpreted as to place the first DMRS after the control resource sets (CORESET).
- CORESET control resource sets
- mapping type B the first DMRS may be placed in the first symbol of data allocation. That is, the position of the DMRS may be given relative to where the data is located rather than relative to slot boundaries.
- DMRS may have multiple types (Type). Specifically, DMRS has Type 1 and Type 2. Type 1 and Type 2 differ in mapping in the frequency domain and the maximum number of orthogonal reference signals. Type 1 can output up to 4 orthogonal signals with single-symbol DMRS, and Type 2 can output up to 8 orthogonal signals with double-symbol DMRS.
- FIG. 4 is a functional block diagram of the UE200.
- the UE 200 includes a radio signal transmission/reception unit 210, an amplifier unit 220, a modem unit 230, a control signal/reference signal processing unit 240, an encoding/decoding unit 250, a data transmission/reception unit 260, and a control unit 270. .
- the radio signal transmitting/receiving unit 210 transmits/receives radio signals according to NR.
- the radio signal transmitting/receiving unit 210 supports Massive MIMO, CA that bundles multiple CCs, and DC that simultaneously communicates between the UE and each of the two NG-RAN Nodes.
- the amplifier section 220 is configured by a PA (Power Amplifier)/LNA (Low Noise Amplifier) and the like. Amplifier section 220 amplifies the signal output from modem section 230 to a predetermined power level. In addition, amplifier section 220 amplifies the RF signal output from radio signal transmission/reception section 210 .
- PA Power Amplifier
- LNA Low Noise Amplifier
- the modulation/demodulation unit 230 executes data modulation/demodulation, transmission power setting, resource block allocation, etc. for each predetermined communication destination (gNB 100 or other gNB).
- the modem unit 230 may apply Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM)/Discrete Fourier Transform-Spread (DFT-S-OFDM). Also, DFT-S-OFDM may be used not only for uplink (UL) but also for downlink (DL).
- the control signal/reference signal processing unit 240 executes processing related to various control signals transmitted and received by the UE 200 and processing related to various reference signals transmitted and received by the UE 200.
- control signal/reference signal processing unit 240 receives various control signals transmitted from the gNB 100 via a predetermined control channel, for example, radio resource control layer (RRC) control signals. Also, the control signal/reference signal processing unit 240 transmits various control signals to the gNB 100 via a predetermined control channel.
- RRC radio resource control layer
- the control signal/reference signal processing unit 240 executes processing using reference signals (RS) such as Demodulation Reference Signal (DMRS) and Phase Tracking Reference Signal (PTRS).
- RS reference signals
- DMRS Demodulation Reference Signal
- PTRS Phase Tracking Reference Signal
- a DMRS is a known reference signal (pilot signal) between a terminal-specific base station and a terminal for estimating the fading channel used for data demodulation.
- PTRS is a terminal-specific reference signal for estimating phase noise, which is a problem in high frequency bands.
- reference signals may include Channel State Information-Reference Signal (CSI-RS), Sounding Reference Signal (SRS), and Positioning Reference Signal (PRS) for position information.
- CSI-RS Channel State Information-Reference Signal
- SRS Sounding Reference Signal
- PRS Positioning Reference Signal
- control channels include Physical Downlink Control Channel (PDCCH), Physical Uplink Control Channel (PUCCH), Random Access Channel (RACH), Downlink Control Information (DCI) including Random Access Radio Network Temporary Identifier (RA-RNTI), and Physical Broadcast Channel (PBCH) etc. are included.
- PDCCH Physical Downlink Control Channel
- PUCCH Physical Uplink Control Channel
- RACH Random Access Channel
- DCI Downlink Control Information
- RA-RNTI Random Access Radio Network Temporary Identifier
- PBCH Physical Broadcast Channel
- data channels include PDSCH (Physical Downlink Shared Channel) and PUSCH (Physical Uplink Shared Channel).
- Data means data transmitted over a data channel.
- a data channel may be read as a shared channel.
- control signal/reference signal processing unit 240 may receive downlink control information (DCI).
- DCI has existing fields such as DCI Formats, Carrier indicator (CI), BWP indicator, FDRA (Frequency Domain Resource Allocation), TDRA (Time Domain Resource Allocation), MCS (Modulation and Coding Scheme), HPN (HARQ Process Number) , NDI (New Data Indicator), RV (Redundancy Version), etc.
- the value stored in the DCI Format field is an information element that specifies the DCI format.
- the value stored in the CI field is an information element that specifies the CC to which DCI is applied.
- the value stored in the BWP indicator field is an information element that specifies the BWP to which DCI applies.
- the BWP that can be specified by the BWP indicator is configured by an information element (BandwidthPart-Config) included in the RRC message.
- the value stored in the FDRA field is an information element that specifies the frequency domain resource to which DCI is applied.
- a frequency domain resource is identified by a value stored in the FDRA field and an information element (RA Type) included in the RRC message.
- the value stored in the TDRA field is an information element that specifies the time domain resource to which DCI applies.
- the time domain resource is specified by the value stored in the TDRA field and information elements (pdsch-TimeDomainAllocationList, pusch-TimeDomainAllocationList) included in the RRC message.
- a time-domain resource may be identified by a value stored in the TDRA field and a default table.
- the value stored in the MCS field is an information element that specifies the MCS to which DCI applies.
- the MCS is specified by the values stored in the MCS and the MCS table.
- the MCS table may be specified by RRC messages or identified by RNTI scrambling.
- the value stored in the HPN field is an information element that specifies the HARQ Process to which DCI is applied.
- the value stored in NDI is an information element for specifying whether data to which DCI is applied is initial transmission data.
- the value stored in the RV field is an information element that specifies the data redundancy
- the encoding/decoding unit 250 performs data segmentation/concatenation, channel coding/decoding, etc. for each predetermined communication destination (gNB 100 or other gNB).
- the encoding/decoding unit 250 divides the data output from the data transmission/reception unit 260 into pieces of a predetermined size, and performs channel coding on the divided data. Also, encoding/decoding section 250 decodes the data output from modem section 230 and concatenates the decoded data.
- the data transmission/reception unit 260 executes transmission/reception of Protocol Data Unit (PDU) and Service Data Unit (SDU). Specifically, the data transmitting/receiving unit 260 performs PDU/SDU in multiple layers (medium access control layer (MAC), radio link control layer (RLC), packet data convergence protocol layer (PDCP), etc.). Assemble/disassemble etc. The data transmission/reception unit 260 also performs data error correction and retransmission control based on HARQ (Hybrid Automatic Repeat Request).
- MAC medium access control layer
- RLC radio link control layer
- PDCP packet data convergence protocol layer
- HARQ Hybrid Automatic Repeat Request
- the control unit 270 controls each functional block that configures the UE200.
- the control unit 270 constitutes a control unit that multiplexes two or more pieces of uplink control information (UCI: Uplink Control Information) having different priorities to an uplink shared channel (PUSCH).
- UCI Uplink Control Information
- the control unit 270 determines resources for two or more UCIs based on the identification method.
- a UCI may contain an acknowledgment (HARQ-ACK) for one or more TBs.
- the UCI may include an SR (Scheduling Request) requesting resource scheduling, and may include a CSI (Channel State Information) representing the channel state. Details of the identification method will be described later.
- control unit 270 controls the control signal/reference signal processing unit 240 described above, and the control signal/reference signal processing unit 240 transmits an uplink signal via PUSCH in which two or more UCIs are multiplexed.
- a communication unit for transmission may be configured.
- FIG. 5 is a functional block configuration diagram of gNB100. As shown in FIG. 5, the gNB 100 has a receiver 110, a transmitter 120 and a controller .
- the receiving unit 110 receives various signals from the UE200.
- the receiver 110 may receive the UL signal via PUCCH or PUSCH.
- the transmission unit 120 transmits various signals to the UE200.
- Transmitting section 120 may transmit the DL signal via PDCCH or PDSCH.
- the control unit 130 controls the gNB100.
- Control section 130 assumes reception of an uplink signal via PUSCH in which two or more UCIs whose resources are determined based on a specific method are multiplexed.
- Rate Matching Rate matching will be described below. Specifically, UCI rate matching in the case of multiplexing UCI to UL SCH will be described.
- HARQ-ACK, CSI Part 1, and CSI Part 2 are exemplified as UCI. Note that HARQ-ACK, CSI-Part 1 and CSI-Part 2 are performed separately.
- a bit sequence of "C00, C01, " is obtained by applying channel coding to HARQ-ACK having a bit sequence of " X0 , X1, ## Rate matching is applied to such bit sequences.
- Q NL is the number of PUSCH transmission layers.
- Q m is the PUSCH modulation condition.
- Q' ACK is represented by the following formula (TS38.212 V16.3.0 ⁇ 6.3.2.4.1.1 "HARQ-ACK").
- Q' ACK is the minimum value of the item (left side) defined by the coefficient ( ⁇ ) and the item (right side) defined by the scaling factor ( ⁇ ). Therefore, it should be noted that the RE (Resource Element) used for HARQ-ACK transmission may be limited by the scaling factor ( ⁇ ).
- a bit sequence of "C00, C01, " is obtained by applying channel coding to CSI Part 1 having a bit sequence of "Y0, Y1, !. Rate matching is applied to such bit sequences.
- Q NL is the number of PUSCH transmission layers.
- Q m is the PUSCH modulation condition.
- Q' CSI- part1 is represented by the following formula (TS38.212 V16.3.0 ⁇ 6.3.2.4.1.2 "CSI part 1").
- Q' ACK is the minimum value of the item (left side) defined by the coefficient ( ⁇ ) and the item (right side) defined by the scaling factor ( ⁇ ). Therefore, it should be noted that the RE (Resource Element) used for transmitting CSI Part 1 can be limited by the scaling factor ( ⁇ ).
- a bit sequence of "C00, C01, " is obtained by applying channel coding to CSI Part 2 having a bit sequence of " Z0 , Z1, !. Rate matching is applied to such bit sequences.
- Q NL is the number of PUSCH transmission layers.
- Q m is the PUSCH modulation condition.
- Q' CSI- part2 is represented by the following formula (TS38.212 V16.3.0 ⁇ 6.3.2.4.1.3 "CSI part 2").
- Q' ACK is the minimum value of the item (left side) defined by the coefficient ( ⁇ ) and the item (right side) defined by the scaling factor ( ⁇ ). Therefore, it should be noted that the RE (Resource Element) used for transmitting CSI Part 2 can be limited by the scaling factor ( ⁇ ).
- the identification method is a method of determining resources for two or more UCIs in a case where two or more different UCIs are multiplexed on the PUSCH.
- the identification method is to assign LP (Low Priority) UCI (e.g., HARQ-ACK) to HP PUSCH carrying HP (High Priority) UCI (e.g., HARQ-ACK and/or CSI) and UL-SCH. May be applied in multiple cases.
- the identification method may be applied in the case of multiplexing HP UCI (eg HARQ-ACK) over LP UCI (eg HARQ-ACK and/or CSI) and LP PUSCH carrying UL-SCH.
- HP UCI eg HARQ-ACK
- LP UCI eg HARQ-ACK and/or CSI
- LP PUSCH carrying UL-SCH.
- the first identification method will be described below.
- the UE 200 individually determines resources for each of two or more UCIs.
- the i-th UCI resource may be represented by the following formula.
- the i-th UCI resource may be represented by the following equation.
- the following items are referred to as the first item.
- the i-th UCI may be any of HARQ-ACK, SR, and CSI-RS.
- the number of bits of UCI1 (O UCI1 ) is used as O part-1
- the number of bits of CRC applied to UCI1 (L UCI1 ) is used as L part-1
- ⁇ part- ⁇ UCI1 ⁇ PUSCH is used as i ⁇ PUSCH.
- the UCI coding part contains two or more UCI types with different priorities.
- the UCI coding part includes UCI coding part 1, and the UCIs included in UCI coding part 1 are UCI1 and UCI2.
- O eff-part-1 is used as O part-1
- O eff-part-1 is represented by the number of bits of UCI1 and UCI2 (O UCI1 +O UCI2 ).
- L eff-part-1 is used as L part-1
- L eff-part-1 is represented by the number of CRC bits (L UCI1 +L UCI2 ) applied to UCI1 and UCI2.
- ⁇ eff-part1 ⁇ PUSCH is used as ⁇ part-i ⁇ PUSCH.
- ⁇ eff- part1 ⁇ PUSCH may be the maximum value of ⁇ UCI1 ⁇ PUSCH and ⁇ UCI2 ⁇ PUSCH (max( ⁇ UCI1 ⁇ PUSCH, ⁇ UCI2 ⁇ PUSCH)), and ⁇ UCI1 ⁇ PUSCH and ⁇ UCI2 It may be the minimum value of ⁇ PUSCH (min( ⁇ UCI1 ⁇ PUSCH, ⁇ UCI2 ⁇ PUSCH)) and the average value of ⁇ UCI1 ⁇ PUSCH and ⁇ UCI2 ⁇ PUSCH (ave( ⁇ UCI1 ⁇ PUSCH, ⁇ UCI2 ⁇ PUSCH) ).
- ⁇ _eff-part1 ⁇ PUSCH may be a specific parameter ( ⁇ UCI1_UCI2 ⁇ PUSCH) set by RRC.
- a specific parameter may be set by a combination of UCIs (here, UCI1 and UCI2) multiplexed on the PUSCH.
- Option 1 uses ⁇ ( ⁇ e as described above) common to UCI coding parts.
- ⁇ common that is set in common to all UCIs multiplexed on the PUSCH may be defined as ⁇ e . That is, one ⁇ common is used as ⁇ e .
- ⁇ e the maximum value of ⁇ for each UCI multiplexed on the PUSCH, the minimum value of ⁇ for each UCI multiplexed on the PUSCH, or the average value of ⁇ for each UCI multiplexed on the PUSCH is used.
- ⁇ e is max( ⁇ UCI1 , ⁇ UCI2 , ⁇ UCI3 ), min( ⁇ UCI1 , ⁇ UCI2 , ⁇ UCI3 ) or ave( ⁇ UCI1 , ⁇ UCI2 , ⁇ UCI3 ) may be used.
- ⁇ e may be a specific parameter set by RRC.
- a specific parameter may be set by a combination of UCIs multiplexed on PUSCH.
- ⁇ UCI1_UCI2_UCI3 may be defined as a specific parameter.
- the priority for each UCI coding part may be defined for the limitation on the second term (that is, the limitation on the total resources of UCI).
- the priority of the UCI coding part may be set by RRC or predefined in the wireless communication system 10 based on the UCI type and PHY (physical layer) priority contained in the UCI coding part. For example, if UCI coding part 1 has a higher priority than UCI coding part 2, the second term for UCI coding part 1 and UCI coding part 2 may be expressed by the following equations.
- the second term is exemplified in a case where repeated transmission of PUSCH (eg, repetition type B) is not applied, but the priority of UCI coding part is repeated transmission of PUSCH (eg, repetition type B) is applied. It is also applicable to the second term in the case where
- Option 2 uses a separate ⁇ for each UCI coding part ( ⁇ part-i described later).
- ⁇ part-1 is the scaling factor applied to the ith UCI.
- new limits may be introduced such that the total resources of two or more UCIs do not exceed the resources available on PUSCH.
- such a limitation may be the third term used in repeated transmissions of PUSCH (eg, repetition type B).
- the priority for each UCI coding part may be defined for the limitation on the second term (that is, the limitation on the total resources of UCI).
- the priority of the UCI coding part may be set by RRC or predefined in the wireless communication system 10 based on the UCI type and PHY (physical layer) priority contained in the UCI coding part. For example, if UCI coding part 1 has a higher priority than UCI coding part 2, the second term for UCI coding part 1 and UCI coding part 2 may be expressed by the following equations.
- the second term is exemplified in a case where PUSCH repetition transmission (eg, repetition type B) is not applied, but the UCI coding part priority is determined by PUSCH repetition transmission (eg, repetition type B). It is also applicable to the second term in the case where
- ⁇ part-i may be determined as follows.
- the UCI coding part contains one UCI type with the same priority.
- the UCI coding part includes UCI coding part 1, and the UCI included in UCI coding part 1 is UCI1.
- ⁇ UCI1 applied to UCI1 is used as ⁇ part-1 .
- the UCI coding part contains two or more UCI types with different priorities.
- the UCI coding part includes UCI coding part 1, and the UCIs included in UCI coding part 1 are UCI1 and UCI2.
- ⁇ eff-part1 is used as ⁇ part-1 .
- ⁇ eff- part1 may be the maximum value of ⁇ UCI1 and ⁇ UCI2 (max( ⁇ UCI1 , ⁇ UCI2 )), or the minimum value of ⁇ UCI1 and ⁇ UCI2 (min( ⁇ UCI1 , ⁇ UCI2 )). may be the average value of ⁇ UCI1 and ⁇ UCI2 (ave( ⁇ UCI1 , ⁇ UCI2 )).
- ⁇ eff- part1 may be a specific parameter ( ⁇ UCI1_UCI2 ) set by RRC.
- a specific parameter may be set by a combination of UCIs (here, UCI1 and UCI2) multiplexed on the PUSCH.
- Clause 3 may be used as a limitation on the total resources of the UCI, similar to the existing technology.
- priority may be defined for each UCI coding part.
- the priority of the UCI coding part may be set by RRC or predefined in the wireless communication system 10 based on the UCI type and PHY (physical layer) priority contained in the UCI coding part. For example, if UCI coding part 1 has a higher priority than UCI coding part 2, the third term for UCI coding part 1 and UCI coding part 2 may be expressed by the following equations.
- the second identification method will be described below.
- the UE 200 determines the overall resources of two or more UCIs and then distributes the resources to each of the two or more UCIs.
- the overall resources of two or more UCIs are represented as follows.
- the i-th UCI resource may be expressed by the following formula.
- the i-th UCI resource may be expressed by the following formula.
- O eff is used in place of O part-i in the first specifying method
- L eff is used in place of L part-i in the first specifying method
- ⁇ eff ⁇ PUSCH is used instead of ⁇ part-i ⁇ PUSCH in one specific method.
- Other points are the same as the first specifying method.
- O eff may be the total number of UCI bits multiplexed on the PUSCH.
- O eff may be a value obtained by weighting the number of UCI bits multiplexed on the USCH by a coefficient ( ⁇ ) for each UCI.
- ⁇ a coefficient for each UCI.
- O eff may be O UCI1 +O UCI2 and O eff may be ⁇ 1 ⁇ O UCI1 + ⁇ 2 ⁇ O UCI2 .
- the factor ( ⁇ ) may be a parameter determined by the target code rate relationship of UCI.
- L eff may be the sum of the number of CRC bits applied to the UCI multiplexed on the PUSCH.
- L eff may be a value obtained by weighting the number of bits of CRC applied to UCI multiplexed on PUSCH by a coefficient ( ⁇ ) for each UCI.
- ⁇ a coefficient for each UCI.
- L eff may be L UCI1 +L UCI2 and O eff may be ⁇ 1 L UCI1 + ⁇ 2 L UCI2 .
- the factor ( ⁇ ) may be a parameter determined by the target code rate relationship of UCI.
- ⁇ eff ⁇ PUSCH may be the maximum, minimum, or average value of ⁇ applied to UCI multiplexed on PUSCH.
- ⁇ eff ⁇ PUSCH may be a value obtained by weighting ⁇ applied to UCIs multiplexed on PUSCH by a coefficient ( ⁇ ) for each UCI. For example, a case where the UCIs multiplexed on the PUSCH are UCI1 and UCI2 will be illustrated.
- ⁇ eff ⁇ PUSCH is max( ⁇ UCI1 ⁇ PUSCH, ⁇ UCI2 ⁇ PUSCH), min( ⁇ UCI1 ⁇ PUSCH, ⁇ UCI2 ⁇ PUSCH) or ave( ⁇ UCI1 ⁇ PUSCH, ⁇ UCI2 ⁇ PUSCH) may be ⁇ eff ⁇ PUSCH may be ⁇ 1 ⁇ UCI1 ⁇ PUSCH+ ⁇ 2 ⁇ UCI2 ⁇ PUSCH.
- the factor ( ⁇ ) may be a parameter determined by the target code rate relationship of UCI.
- ⁇ eff ⁇ PUSCH may be a specific parameter ( ⁇ UCI1_UCI2 ⁇ PUSCH) set by RRC, similar to the first specific method.
- a specific parameter may be set by a combination of UCIs (here, UCI1 and UCI2) multiplexed on the PUSCH.
- the second term (for example, ⁇ ) and the third term can be determined in the same manner as in the first identification method, so the explanation regarding the second term and the third term will be omitted.
- the UE 200 distributes the determined resource (ie, Q'total_UCI ) to each of two or more UCIs.
- the determined resource ie, Q'total_UCI
- the following options are conceivable.
- a factor ( ⁇ ) is defined for allocating the resource, in other words the total Q′ total_UCI of the resource of the UCI.
- the coefficient ( ⁇ ) is a coefficient that satisfies the condition that the sum of resources ( Q'part -i ) of the i-th UCI coding part is Q'total_UCI.
- the coefficient ( ⁇ ) may be set by RRC or predetermined in the wireless communication system 10 .
- the factor ( ⁇ ) may be determined based on other parameters.
- UCI coding part 1 and UCI coding part 2 are included, ⁇ /( ⁇ +1) ⁇ Q' total_UCI is distributed as the resource (Q' part1 ) of UCI coding part 1, and UCI coding part 1 ⁇ 1/( ⁇ +1) ⁇ Q′ total_UCI may be distributed as a resource (Q′ part2 ) of .
- ⁇ may be a newly defined parameter, Q'part1 / Q'part2 , Q'part2 / Q'part1 , or Q'part2 / Q'total_UCI. or Q'part1 / Q'total_UCI .
- a factor ( ⁇ ) is defined for distributing the resource, in other words the factor ( ⁇ ) for distributing the total Q'total_UCI of the resources of the UCI.
- the coefficient ( ⁇ ) is a parameter determined by the UCI code rate relationship.
- UCI coding part 1 and UCI coding part 2 are included, ⁇ /( ⁇ +1) ⁇ Q' total_UCI is distributed as the resource (Q' part1 ) of UCI coding part 1, and UCI coding part 1 ⁇ 1/( ⁇ +1) ⁇ Q′ total_UCI may be distributed as resources (Q′ part2 ) of .
- ⁇ may be ⁇ 1 / ⁇ 2 or ⁇ 2 / ⁇ 1 .
- ⁇ 1 may be (O part1 +L part1 )/Q' part1 and ⁇ 2 may be (O part2 +L part2 )/Q' part2 .
- ⁇ 1 may be the target code rate of UCI coding part 1 ( ⁇ part1 )
- ⁇ 2 may be the target code rate of UCI coding part 2 ( ⁇ part2 ).
- step S10 UE 200 transmits a message including UE Capability to NG-RAN 20.
- the UE Capability may include an information element that explicitly or implicitly indicates whether or not the UE has the capability to multiplex two or more UCIs with different priorities onto the PUSCH.
- UE100 receives an RRC message from NG-RAN20.
- the RRC message may contain information elements used in the first identification method or the second identification method.
- An information element explicitly or implicitly indicates parameters for ⁇ ( ⁇ UCI1_UCI2 ⁇ PUSCH), parameters for ⁇ (e.g., ⁇ e , ⁇ UCI1_UCI2 ), UCI coding part priority, coefficient ( ⁇ ). may contain.
- step S12 the UE 200 receives one or more DCIs from the NG-RAN 20 via the PDCCH.
- step S13 the UE 200 transmits an uplink signal using the UCI-multiplexed UL-SCH (PUSCH).
- PUSCH UCI-multiplexed UL-SCH
- the UE 200 determines UCI resources to be multiplexed on the PUSCH based on the specific conditions described above.
- the UE 200 determines resources for two or more UCIs based on a specific method. According to such a configuration, since the identification method is defined assuming a case where UCIs having different priorities are multiplexed to PUSCH, even if such a case is newly assumed, two or more UCI resources can be determined appropriately.
- which of the above-described options is applied may be set by higher layer parameters, may be reported by UE 200 capability information (UE Capability), and may be wireless communication It may be predetermined in system 10 . Furthermore, which of the above options to apply may be determined by higher layer parameters and UE Capabilities.
- UE Capability UE capability information
- the UE Capability may include the following information elements. Specifically, the UE Capability may include an information element indicating whether to support the function of multiplexing UCIs with different priorities to PUSCH. UE Capability may include an information element indicating whether to support the function of multiplexing UCI to PUSCH when PUCCH includes HP UCI and LP UCI in two or more UCI coding parts. The UE Capability may contain an information element indicating whether to support the capability to apply rate matching separately for different UCI coding parts (separate coding). The UE Capability may include an information element indicating whether or not to support a function (joint coding) that applies rate matching to the entire UCI.
- one UCI coding part may contain one UCI or two or more UCIs.
- each functional block may be implemented using one device that is physically or logically coupled, or directly or indirectly using two or more devices that are physically or logically separated (e.g. , wired, wireless, etc.) and may be implemented using these multiple devices.
- a functional block may be implemented by combining software in the one device or the plurality of devices.
- Functions include judging, determining, determining, calculating, calculating, processing, deriving, investigating, searching, checking, receiving, transmitting, outputting, accessing, resolving, selecting, choosing, establishing, comparing, assuming, expecting, assuming, Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc. can't
- a functional block (component) that performs transmission is called a transmitting unit or transmitter.
- the implementation method is not particularly limited.
- FIG. 10 is a diagram showing an example of the hardware configuration of the device. As shown in FIG. 10, the device may be configured as a computing device including a processor 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, and the like.
- the term "apparatus” can be read as a circuit, device, unit, or the like.
- the hardware configuration of the device may be configured to include one or more of each device shown in the figure, or may be configured without some of the devices.
- Each functional block of the device (see FIG. 4) is realized by any hardware element of the computer device or a combination of the hardware elements.
- each function of the device is implemented by causing the processor 1001 to perform calculations, controlling communication by the communication device 1004, and controlling the It is realized by controlling at least one of data reading and writing in 1002 and storage 1003 .
- a processor 1001 operates an operating system and controls the entire computer.
- the processor 1001 may be configured by a central processing unit (CPU) including interfaces with peripheral devices, a control unit, an arithmetic unit, registers, and the like.
- CPU central processing unit
- the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes according to them.
- programs program codes
- software modules software modules
- data etc.
- the program a program that causes a computer to execute at least part of the operations described in the above embodiments is used.
- the above-described various processes may be executed by one processor 1001, or may be executed by two or more processors 1001 simultaneously or sequentially.
- Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via an electric communication line.
- the memory 1002 is a computer-readable recording medium, and is composed of at least one of Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), Random Access Memory (RAM), etc. may be
- ROM Read Only Memory
- EPROM Erasable Programmable ROM
- EEPROM Electrically Erasable Programmable ROM
- RAM Random Access Memory
- the memory 1002 may also be called a register, cache, main memory (main storage device), or the like.
- the memory 1002 can store programs (program code), software modules, etc. capable of executing a method according to an embodiment of the present disclosure.
- the storage 1003 is a computer-readable recording medium, for example, an optical disc such as a Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disc, a magneto-optical disc (for example, a compact disc, a digital versatile disc, a Blu-ray disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, and/or the like.
- Storage 1003 may also be referred to as an auxiliary storage device.
- the recording medium described above may be, for example, a database, server, or other suitable medium including at least one of memory 1002 and storage 1003 .
- the communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, or the like.
- the communication device 1004 includes a high-frequency switch, duplexer, filter, frequency synthesizer, etc., for realizing at least one of frequency division duplex (FDD) and time division duplex (TDD).
- FDD frequency division duplex
- TDD time division duplex
- the input device 1005 is an input device (for example, keyboard, mouse, microphone, switch, button, sensor, etc.) that receives input from the outside.
- the output device 1006 is an output device (eg, display, speaker, LED lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated (for example, a touch panel).
- each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information.
- the bus 1007 may be configured using a single bus, or may be configured using different buses between devices.
- the device includes hardware such as a microprocessor, digital signal processor (DSP), application specific integrated circuit (ASIC), programmable logic device (PLD), field programmable gate array (FPGA), etc.
- DSP digital signal processor
- ASIC application specific integrated circuit
- PLD programmable logic device
- FPGA field programmable gate array
- notification of information is not limited to the aspects/embodiments described in the present disclosure, and may be performed using other methods.
- the notification of information may include physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI), higher layer signaling (e.g., RRC signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), other signals, or a combination thereof
- RRC signaling may also be referred to as RRC messages, e.g., RRC Connection Setup ) message, RRC Connection Reconfiguration message, or the like.
- LTE Long Term Evolution
- LTE-A LTE-Advanced
- SUPER 3G IMT-Advanced
- 4G 4th generation mobile communication system
- 5G 5th generation mobile communication system
- Future Radio Access FAA
- New Radio NR
- W-CDMA registered trademark
- GSM registered trademark
- CDMA2000 Code Division Multiple Access 2000
- UMB Ultra Mobile Broadband
- IEEE 802.11 Wi-Fi (registered trademark)
- IEEE 802.16 WiMAX®
- IEEE 802.20 Ultra-WideBand (UWB), Bluetooth®, other suitable systems, and/or next-generation systems enhanced therefrom.
- a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).
- a specific operation that is performed by a base station in the present disclosure may be performed by its upper node in some cases.
- various operations performed for communication with a terminal may be performed by the base station and other network nodes other than the base station (e.g. MME or S-GW, etc., but not limited to).
- MME or S-GW network nodes
- the case where there is one network node other than the base station is exemplified above, it may be a combination of a plurality of other network nodes (for example, MME and S-GW).
- Information, signals can be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). It may be input and output via multiple network nodes.
- Input/output information may be stored in a specific location (for example, memory) or managed using a management table. Input and output information may be overwritten, updated, or appended. The output information may be deleted. The entered information may be transmitted to other devices.
- the determination may be made by a value represented by one bit (0 or 1), by a true/false value (Boolean: true or false), or by numerical comparison (for example, a predetermined value).
- notification of predetermined information is not limited to being performed explicitly, but may be performed implicitly (for example, not notifying the predetermined information). good too.
- Software whether referred to as software, firmware, middleware, microcode, hardware description language or otherwise, includes instructions, instruction sets, code, code segments, program code, programs, subprograms, and software modules. , applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and the like.
- software, instructions, information, etc. may be transmitted and received via a transmission medium.
- the Software uses wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) to access websites, Wired and/or wireless technologies are included within the definition of transmission medium when sent from a server or other remote source.
- wired technology coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.
- wireless technology infrared, microwave, etc.
- data, instructions, commands, information, signals, bits, symbols, chips, etc. may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. may be represented by a combination of
- the channel and/or symbols may be signaling.
- a signal may also be a message.
- a component carrier may also be called a carrier frequency, a cell, a frequency carrier, or the like.
- system and “network” used in this disclosure are used interchangeably.
- information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values from a predetermined value, or may be expressed using other corresponding information.
- radio resources may be indexed.
- base station BS
- radio base station fixed station
- NodeB NodeB
- eNodeB eNodeB
- gNodeB gNodeB
- a base station may also be referred to by terms such as macrocell, small cell, femtocell, picocell, and the like.
- a base station can accommodate one or more (eg, three) cells (also called sectors). When a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, each smaller area corresponding to a base station subsystem (e.g., a small indoor base station (Remote Radio)). Head: RRH) can also provide communication services.
- a base station subsystem e.g., a small indoor base station (Remote Radio)
- Head: RRH can also provide communication services.
- cell refers to part or all of the coverage area of at least one of a base station and base station subsystem that provides communication services in this coverage.
- MS Mobile Station
- UE User Equipment
- a mobile station is defined by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless It may also be called a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
- At least one of the base station and mobile station may be called a transmitting device, a receiving device, a communication device, or the like.
- At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, or the like.
- the mobile object may be a vehicle (e.g., car, airplane, etc.), an unmanned mobile object (e.g., drone, self-driving car, etc.), or a robot (manned or unmanned ).
- at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations.
- at least one of the base station and mobile station may be an Internet of Things (IoT) device such as a sensor.
- IoT Internet of Things
- the base station in the present disclosure may be read as a mobile station (user terminal, hereinafter the same).
- communication between a base station and a mobile station is replaced with communication between multiple mobile stations (for example, Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.)
- the mobile station may have the functions that the base station has.
- words such as "up” and “down” may be replaced with words corresponding to inter-terminal communication (for example, "side”).
- uplink channels, downlink channels, etc. may be read as side channels.
- a mobile station in the present disclosure may be read as a base station.
- the base station may have the functions that the mobile station has.
- a radio frame may consist of one or more frames in the time domain. Each frame or frames in the time domain may be referred to as a subframe.
- a subframe may further consist of one or more slots in the time domain.
- a subframe may be a fixed time length (eg, 1 ms) independent of numerology.
- a numerology may be a communication parameter that applies to the transmission and/or reception of a signal or channel. Numerology, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, transmission and reception specific filtering operations performed by the receiver in the frequency domain, specific windowing operations performed by the transceiver in the time domain, and/or the like.
- SCS subcarrier spacing
- TTI transmission time interval
- number of symbols per TTI radio frame structure
- transmission and reception specific filtering operations performed by the receiver in the frequency domain specific windowing operations performed by the transceiver in the time domain, and/or the like.
- a slot may consist of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain.
- OFDM Orthogonal Frequency Division Multiplexing
- SC-FDMA Single Carrier Frequency Division Multiple Access
- a slot may be a unit of time based on numerology.
- a slot may contain multiple mini-slots. Each minislot may consist of one or more symbols in the time domain. A minislot may also be referred to as a subslot. A minislot may consist of fewer symbols than a slot.
- a PDSCH (or PUSCH) that is transmitted in time units larger than a minislot may be referred to as PDSCH (or PUSCH) mapping type A.
- PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.
- Radio frames, subframes, slots, minislots and symbols all represent time units when transmitting signals. Radio frames, subframes, slots, minislots and symbols may be referred to by other corresponding designations.
- one subframe may be called a transmission time interval (TTI)
- TTI transmission time interval
- TTI transmission time interval
- TTI transmission time interval
- one slot or one minislot may be called a TTI. That is, at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, may be a period shorter than 1ms (eg, 1-13 symbols), or a period longer than 1ms may be Note that the unit representing the TTI may be called a slot, minislot, or the like instead of a subframe.
- TTI refers to, for example, the minimum scheduling time unit in wireless communication.
- a base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each user terminal) to each user terminal on a TTI basis.
- radio resources frequency bandwidth, transmission power, etc. that can be used by each user terminal
- the TTI may be a transmission time unit for channel-encoded data packets (transport blocks), code blocks, codewords, etc., or may be a processing unit for scheduling, link adaptation, etc. Note that when a TTI is given, the time interval (for example, the number of symbols) in which transport blocks, code blocks, codewords, etc. are actually mapped may be shorter than the TTI.
- one slot or one minislot is called a TTI
- one or more TTIs may be the minimum scheduling time unit.
- the number of slots (the number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
- a TTI with a time length of 1 ms may be called a normal TTI (TTI in LTE Rel.8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc.
- TTI that is shorter than a normal TTI may also be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a slot, and so on.
- long TTI for example, normal TTI, subframe, etc.
- short TTI for example, shortened TTI, etc.
- a TTI having a TTI length greater than or equal to this value may be read as a replacement.
- a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain.
- the number of subcarriers included in an RB may be the same regardless of neurology, and may be 12, for example.
- the number of subcarriers included in an RB may be determined based on neumerology.
- the time domain of an RB may include one or more symbols and may be 1 slot, 1 minislot, 1 subframe, or 1 TTI long.
- One TTI, one subframe, etc. may each be configured with one or a plurality of resource blocks.
- One or more RBs are physical resource blocks (PRB), sub-carrier groups (SCG), resource element groups (REG), PRB pairs, RB pairs, etc. may be called.
- PRB physical resource blocks
- SCG sub-carrier groups
- REG resource element groups
- PRB pairs RB pairs, etc.
- a resource block may be composed of one or more resource elements (Resource Element: RE).
- RE resource elements
- 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
- a Bandwidth Part (which may also be called a Bandwidth Part) represents a subset of contiguous common resource blocks (RBs) for a neumerology in a carrier. good.
- the common RB may be identified by an RB index based on the common reference point of the carrier.
- PRBs may be defined in a BWP and numbered within that BWP.
- BWP may include BWP for UL (UL BWP) and BWP for DL (DL BWP).
- BWP may include BWP for UL (UL BWP) and BWP for DL (DL BWP).
- One or more BWPs may be configured in one carrier for the UE.
- At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal/channel outside the active BWP.
- BWP bitmap
- radio frames, subframes, slots, minislots and symbols described above are only examples.
- the number of subframes included in a radio frame the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of Configurations such as the number of subcarriers and the number of symbols in a TTI, symbol length, cyclic prefix (CP) length, etc.
- CP cyclic prefix
- connection means any direct or indirect connection or coupling between two or more elements, It can include the presence of one or more intermediate elements between two elements being “connected” or “coupled.” Couplings or connections between elements may be physical, logical, or a combination thereof. For example, “connection” may be read as "access”.
- two elements are defined using at least one of one or more wires, cables, and printed electrical connections and, as some non-limiting and non-exhaustive examples, in the radio frequency domain. , electromagnetic energy having wavelengths in the microwave and optical (both visible and invisible) regions, and the like.
- the reference signal can also be abbreviated as Reference Signal (RS), and may also be called Pilot depending on the applicable standard.
- RS Reference Signal
- any reference to elements using the "first”, “second”, etc. designations used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, references to first and second elements do not imply that only two elements may be employed therein, or that the first element must precede the second element in any way.
- determining and “determining” used in this disclosure may encompass a wide variety of actions.
- “Judgement” and “determination” are, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (eg, lookup in a table, database, or other data structure), ascertaining as “judged” or “determined”, and the like.
- "judgment” and “determination” are used for receiving (e.g., receiving information), transmitting (e.g., transmitting information), input, output, access (accessing) (for example, accessing data in memory) may include deeming that a "judgment” or “decision” has been made.
- judgment and “decision” are considered to be “judgment” and “decision” by resolving, selecting, choosing, establishing, comparing, etc. can contain.
- judgment and “decision” may include considering that some action is “judgment” and “decision”.
- judgment (decision) may be read as “assuming”, “expecting”, “considering”, or the like.
- a and B are different may mean “A and B are different from each other.”
- the term may also mean that "A and B are different from C”.
- Terms such as “separate,” “coupled,” etc. may also be interpreted in the same manner as “different.”
- Radio communication system 20 NG-RAN 100 gNB 110 receiver 120 transmitter 130 controller 200 UE 210 radio signal transmission/reception unit 220 amplifier unit 230 modulation/demodulation unit 240 control signal/reference signal processing unit 250 encoding/decoding unit 260 data transmission/reception unit 270 control unit 1001 processor 1002 memory 1003 storage 1004 communication device 1005 input device 1006 output device 1007 bus
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Abstract
Description
(1)無線通信システムの全体概略構成
図1は、実施形態に係る無線通信システム10の全体概略構成図である。無線通信システム10は、5G New Radio(NR)に従った無線通信システムであり、Next Generation-Radio Access Network 20(以下、NG-RAN20、及び端末200(以下、UE200)を含む。
・FR2:24.25 GHz~52.6 GHz
FR1では、15, 30又は60kHzのSub-Carrier Spacing(SCS)が用いられ、5~100MHzの帯域幅(BW)が用いられてもよい。FR2は、FR1よりも高周波数であり、60,又は120kHz(240kHzが含まれてもよい)のSCSが用いられ、50~400MHzの帯域幅(BW)が用いられてもよい。
次に、無線通信システム10の機能ブロック構成について説明する。
以下において、レートマッチングについて説明する。具体的には、UCIをUL SCHに多重するケースにおけるUCIのレートマッチングについて説明する。ここでは、UCIとして、HARQ-ACK、CSI Part 1、CSI Part 2について例示する。なお、HARQ-ACK、CSI-Part 1及びCSI-Part 2は別々に実行される。
以下において、実施形態の特定方法について説明する。特定方法は、異なる2以上のUCIをPUSCHに多重するケースにおいて、2以上のUCIのリソースを決定する方法である。例えば、特定方法は、HP(High Priority) UCI(例えば、HARQ-ACK及び/又はCSI)及びUL-SCHを搬送するHP PUSCHに対して、LP(Low Priority) UCI(例えば、HARQ-ACK)を多重するケースで適用されてもよい。特定方法は、LP UCI(例えば、HARQ-ACK及び/又はCSI)及びUL-SCHを搬送するLP PUSCHに対して、HP UCI(例えば、HARQ-ACK)を多重するケースで適用されてもよい。ここでは、2以上のUCIが別々にコーディングされるケース(Separate Coding)について例示する。
以下において、第1特定方法について説明する。第1特定方法では、UE200は、2以上のUCIのそれぞれのリソースを個別に決定する。
第1に、UCI coding partが同じ優先度の1つのUCI typeを含むケースについて説明する。ここでは、UCI coding partがUCI coding part 1を含み、UCI coding part 1に含まれるUCIがUCI1であるケースについて例示する。
ここでは、スケーリングファクタ(α)として、UCIに共通のαが設定可能であるケース、UCI毎に別々のαが設定可能であるケースについて考える。このようなケースにおいては、以下に示すオプションが考えられる。
第3項については、既存技術と同様に、UCIの総リソースに関する限定として用いられてもよい。
以下において、第2特定方法について説明する。第2特定方法では、UE200は、2以上のUCIの全体のリソースを決定した上で、2以上のUCIのそれぞれにリソースを分配する。第2特定方法において、2以上のUCIの全体のリソースは以下のように表される。
以下において、実施形態の動作例について説明する。以下においては、UL-SCH(PUSCH)に対するUCIの多重について主として説明する。
実施形態では、UE200は、互いに異なる優先度を有するUCIをPUSCHに多重する場合において、2以上のUCIのリソースを特定方法に基づいて決定する。このような構成によれば、互いに異なる優先度を有するUCIをPUSCHに多重するケースを想定して特定方法が定義されるため、このようなケースを新たに想定した場合であっても、2以上のUCIのリソースを適切に決定することができる。
以上、実施形態に沿って本発明の内容を説明したが、本発明はこれらの記載に限定されるものではなく、種々の変形及び改良が可能であることは、当業者には自明である。
20 NG-RAN
100 gNB
110 受信部
120 送信部
130 制御部
200 UE
210 無線信号送受信部
220 アンプ部
230 変復調部
240 制御信号・参照信号処理部
250 符号化/復号部
260 データ送受信部
270 制御部
1001 プロセッサ
1002 メモリ
1003 ストレージ
1004 通信装置
1005 入力装置
1006 出力装置
1007 バス
Claims (5)
- 互いに異なる優先度を有する2以上の上りリンク制御情報を上りリンク共有チャネルに多重する制御部と、
前記2以上の上りリンク制御情報が多重された前記上りリンク共有チャネルを用いて、上りリンク信号を送信する通信部と、を備え、
前記制御部は、前記2以上の上りリンク制御情報のリソースを特定方法に基づいて決定する、端末。 - 前記制御部は、前記特定方法において、前記2以上の上りリンク制御情報のそれぞれのリソースを個別に決定する、請求項1に記載の端末。
- 前記制御部は、前記特定方法において、前記2以上の上りリンク制御情報の全体のリソースを決定した上で、前記前記2以上の上りリンク制御情報のそれぞれにリソースを分配する、請求項1に記載の端末。
- 端末と基地局とを備え、
前記端末は、
互いに異なる優先度を有する2以上の上りリンク制御情報を上りリンク共有チャネルに多重する制御部と、
前記2以上の上りリンク制御情報が多重された前記上りリンク共有チャネルを用いて、上りリンク信号を送信する通信部と、を備え、
前記制御部は、前記2以上の上りリンク制御情報のリソースを特定方法に基づいて決定する、無線通信システム。 - 互いに異なる優先度を有する2以上の上りリンク制御情報を上りリンク共有チャネルに多重するステップAと、
前記2以上の上りリンク制御情報が多重された前記上りリンク共有チャネルを用いて、上りリンク信号を送信するステップBと、を備え、
前記ステップAは、前記2以上の上りリンク制御情報のリソースを特定方法に基づいて決定するステップを含む、無線通信方法。
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Non-Patent Citations (2)
Title |
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LG ELECTRONICS: "Discussion on Intra-UE multiplexing/prioritization", 3GPP DRAFT; R1-2100883, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20210125 - 20210205, 19 January 2021 (2021-01-19), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051971235 * |
QUALCOMM INCORPORATED: "Intra-UE multiplexing and prioritization for IOT and URLLC", 3GPP DRAFT; R1-2101462, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20210125 - 20210205, 19 January 2021 (2021-01-19), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051971627 * |
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