WO2022149223A1 - Terminal, station de base et procédé de communication - Google Patents

Terminal, station de base et procédé de communication Download PDF

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Publication number
WO2022149223A1
WO2022149223A1 PCT/JP2021/000238 JP2021000238W WO2022149223A1 WO 2022149223 A1 WO2022149223 A1 WO 2022149223A1 JP 2021000238 W JP2021000238 W JP 2021000238W WO 2022149223 A1 WO2022149223 A1 WO 2022149223A1
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WIPO (PCT)
Prior art keywords
terminal
base station
frequency hopping
transmission
pusch
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PCT/JP2021/000238
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English (en)
Japanese (ja)
Inventor
真哉 岡村
翔平 吉岡
優元 ▲高▼橋
慎也 熊谷
真由子 岡野
Original Assignee
株式会社Ｎｔｔドコモ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 株式会社Ｎｔｔドコモ filed Critical 株式会社Ｎｔｔドコモ
Priority to CN202180082454.6A priority Critical patent/CN116569628A/zh
Priority to PCT/JP2021/000238 priority patent/WO2022149223A1/fr
Publication of WO2022149223A1 publication Critical patent/WO2022149223A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to a terminal, a base station and a communication method in a wireless communication system.
  • 5G or NR New Radio
  • 3GPP 3rd Generation Partnership Project
  • 5G or NR New Radio
  • 5G various radio techniques and network architectures have been studied in order to satisfy the requirement that the delay of the radio section be 1 ms or less while achieving a throughput of 10 Gbps or more (for example, Non-Patent Document 1).
  • Non-Patent Document 2 when a terminal autonomously selects a resource without using SR (Scheduling Request), repeated transmission is supported in order to improve reliability and delay performance (for example, Non-Patent Document 2). ..
  • the present invention has been made in view of the above points, and an object of the present invention is to improve reliability in the case of repeated transmission in a wireless communication system.
  • the control unit includes a transmission unit that repeatedly transmits a physical uplink shared channel to a base station, and a control unit that applies frequency hopping between a plurality of component carriers to the repeated transmission.
  • a transmission unit that repeatedly transmits a physical uplink shared channel to a base station
  • a control unit that applies frequency hopping between a plurality of component carriers to the repeated transmission.
  • Provides a terminal that determines the plurality of component carriers based on signaling from the base station or the type of the physical uplink shared channel.
  • a technique for improving reliability in the case of repeated transmission is provided.
  • the existing technique may be appropriately used in the operation of the wireless communication system according to the embodiment of the present invention.
  • the existing technique is, for example, an existing NR or LTE, but is not limited to the existing NR or LTE.
  • FIG. 1 is a diagram for explaining an example (1) of a wireless communication system according to an embodiment of the present invention.
  • the wireless communication system according to the embodiment of the present invention includes a base station 10 and a terminal 20 as shown in FIG.
  • FIG. 1 shows one base station 10 and one terminal 20, this is an example, and each of them may be plural.
  • the base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20.
  • the physical resources of the radio signal are defined in the time domain and the frequency domain, the time domain may be defined by the number of OFDM symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks. Further, the TTI (Transmission Time Interval) in the time domain may be a slot, or the TTI may be a subframe.
  • TTI Transmission Time Interval
  • the base station 10 can perform carrier aggregation that bundles a plurality of cells (a plurality of CCs (component carriers)) and communicates with the terminal 20.
  • carrier aggregation one PCell (primary cell) and one or more SCells (secondary cells) are used.
  • the base station 10 transmits a synchronization signal, system information, and the like to the terminal 20.
  • Synchronous signals are, for example, NR-PSS and NR-SSS.
  • the system information is transmitted by, for example, NR-PBCH or PDSCH, and is also referred to as broadcast information.
  • the base station 10 transmits a control signal or data to the terminal 20 by DL (Downlink), and receives the control signal or data from the terminal 20 by UL (Uplink).
  • DL Downlink
  • UL Uplink
  • the terminal 20 is a communication device having a wireless communication function such as a smartphone, a mobile phone, a tablet, a wearable terminal, and a communication module for M2M (Machine-to-Machine). As shown in FIG. 1, the terminal 20 receives a control signal or data from the base station 10 by DL, and transmits the control signal or data to the base station 10 by UL, so that various types provided by the wireless communication system are provided. Use communication services.
  • the terminal 20 may be referred to as a UE, and the base station 10 may be referred to as a gNB.
  • the terminal 20 can perform carrier aggregation that bundles a plurality of cells (a plurality of CCs (component carriers)) and communicates with the base station 10.
  • carrier aggregation one PCell (primary cell) and one or more SCells (secondary cells) are used.
  • PUCCH-S Cell having PUCCH may be used.
  • FIG. 2 is a diagram for explaining an example (2) of a wireless communication system according to an embodiment of the present invention.
  • FIG. 2 shows a configuration example of a wireless communication system when DC (Dual connectivity) is executed.
  • a base station 10A serving as an MN (MasterNode) and a base station 10B serving as an SN (SecondaryNode) are provided.
  • Base station 10A and base station 10B are each connected to the core network.
  • the terminal 20 can communicate with both the base station 10A and the base station 10B.
  • the cell group provided by the MN base station 10A is called an MCG (Master Cell Group), and the cell group provided by the SN base station 10B is called an SCG (Secondary Cell Group).
  • MCG Master Cell Group
  • SCG Secondary Cell Group
  • the MCG is composed of one PCell and one or more SCells
  • the SCG is composed of one PSCell (Primary SCG Cell) and one or more SCells.
  • the DC may be a communication method using two communication standards, and any communication standard may be combined.
  • the combination may be any of NR and 6G standard, LTE and 6G standard.
  • the DC may be a communication method using three or more communication standards, and may be called by another name different from the DC.
  • the processing operation in the present embodiment may be executed in the system configuration shown in FIG. 1, may be executed in the system configuration shown in FIG. 2, or may be executed in a system configuration other than these. ..
  • the resource for transmitting UL data is allocated by the network based on the SR (Scheduling Request) transmitted by the terminal 20 to the base station 10.
  • the network executes a resource setting (Configured grant) capable of transmitting UL data that does not require SR to the terminal 20.
  • a resource setting Configured grant
  • the terminal 20 autonomously selects a resource. That is, UE-centric transmission / reception is assumed.
  • NR release 15/16 supports PUSCH repetitive transmission in continuous slots or symbols and PUSCH frequency hopping in the CC to ensure reliability.
  • NR release 15/16 supports PUSCH repetitive transmission in continuous slots or symbols and PUSCH frequency hopping in the CC to ensure reliability.
  • more terminals 20 will autonomously select resources, and it is expected that the collision probability of UL data will increase.
  • different CCs may be selected between the terminals 20, and a wider spread frequency hopping, for example, frequency hopping between CCs may be applied.
  • FIG. 3 is a sequence diagram for explaining an example of a transmission operation according to the embodiment of the present invention.
  • the base station 10 sets the PUSCH repeat transmission to the terminal 20.
  • the terminal 20 may assume that a frequency hopping pattern is also set when PUSCH repeated transmission is set.
  • the PUSCH repeat transmission setting may include a frequency hopping pattern.
  • the frequency hopping pattern may be defined in advance in the specifications, or the frequency hopping pattern may be determined by settings other than PUSCH repeated transmission (for example, UL cell setting, UL-BWP setting, etc.).
  • the frequency hopping pattern may be set for each CC, or may be set in common among the CCs.
  • step S1 different PUSCH repeat transmission and / or frequency hopping patterns may be set for the SR-based PUSCH and the non-SR-based PUSCH, and a common PUSCH repeat transmission and / or frequency hopping pattern may be set. It may be set.
  • step S2 the base station 10 may send a notification to enable the frequency hopping of the PUSCH to the terminal 20.
  • the notification may be executed by signaling such as RRC (RadioResourceControl), MAC-CE (MediaAccessControl-ControlElement), DCI (DownlinkControlInformation) and the like. Note that step S2 does not have to be executed, and the terminal 20 may assume that frequency hopping is effective when a frequency hopping pattern is set, for example.
  • steps S1 and S2 may not be executed, and the terminal 20 may start execution from step S3. That is, the terminal 20 may autonomously start applying frequency hopping.
  • step S1 PUSCH repeat transmission not including the frequency hopping pattern may be set, and then step S3 may be executed.
  • the terminal 20 may transmit a notification for executing PUSCH repeated transmission to the base station 10.
  • the terminal 20 may notify the base station 10 which of the frequency hopping patterns specified in the specifications is to be used.
  • the terminal 20 may notify the number of times the PUSCH repeated transmission is performed, or may notify the number of times the PUSCH repeated transmission is performed.
  • the terminal 20 may notify the frequency hopping pattern in addition to the notification of executing the PUSCH repeated transmission, or notify the base station 10 of the number of times of the PUSCH repeated transmission and the like. You may.
  • the terminal 20 may transmit a notification for executing PUSCH repetitive transmission to the base station 10 via a dedicated channel (for example, a frequency hopping control channel (FHControlChannel)).
  • a dedicated channel for example, a frequency hopping control channel (FHControlChannel)
  • FHControlChannel frequency hopping control channel
  • step S4 the terminal 20 applies the set frequency hopping and repeatedly executes PUSCH.
  • the terminal 20 may assume frequency hopping between a plurality of CCs when repeatedly transmitting PUSCH. For example, when a notification for enabling frequency hopping of PUSCH is received in step S2, frequency hopping between a plurality of CCs may be assumed.
  • the terminal 20 may switch the number of CCs that execute PUSCH frequency hopping based on signaling such as RRC, MAC-CE, or DCI. Further, the terminal 20 may execute switching of the number of CCs for executing PUSCH frequency hopping in association with other signaling. For example, in SR-based PUSCH transmission, PUSCH frequency hopping may be executed within 1 CC, and in non-SR-based PUSCH transmission, PUSCH frequency hopping may be executed between N (> 1) CCs.
  • the base station 10 may notify the terminal 20 of the CC that performs PUSCH transmission by signaling such as RRC, MAC-CE, or DCI.
  • the terminal 20 may determine the CC that performs the PUSCH transmission.
  • the terminal 20 may determine all CCs that have received the PDSCH as CCs that perform PUSCH transmission, or may determine all enabled CCs as CCs that perform PUSCH transmission.
  • the terminal 20 may acquire CC candidates from the base station 10 by signaling such as RRC, MAC-CE or DCI.
  • the CC candidates may be notified to the terminal 20 together with their associated priorities, and the terminal 20 may decide to perform PUSCH transmission with U CCs having higher priorities among the CC candidates.
  • U may be notified from the base station 10 by signaling such as RRC, MAC-CE or DCI.
  • the terminal 20 may determine whether PUSCH frequency hopping is valid or invalid among a plurality of CCs based on the PUSCH type to be transmitted.
  • the type may correspond to RA (Random Access) type, SR type, or the like.
  • PUSCH type X1 is an SR-based PUSCH and PUSCH type X2 is a non-SR-based PUSCH
  • PUSCH type X1 disables frequency hopping between a plurality of CCs
  • PUSCH type X2 is a non-SR-based PUSCH. Frequency hopping may be enabled.
  • the terminal 20 may assume PUSCH frequency hopping for each PUCCH group (closed to the PUCCH group). That is, the terminal 20 may assume frequency hopping between a plurality of CCs corresponding to the PUCCH group. Further, for example, the terminal 20 may assume PUSCH frequency hopping (closed to the PUCCH group) for each PUCCH group, or may assume PUSCH frequency hopping not closed to the PUCCH group. For example, when performing PUSCH frequency hopping that is not closed to the PUCCH group, if the CC or radio resource used for PUSCH transmission collides between the PUCCH groups, it is based on the priority (for example, the priority associated with the PUCCH group). Then, the PUSCH transmission having a lower priority may be dropped.
  • the priority for example, the priority associated with the PUCCH group
  • the terminal 20 may assume PUSCH frequency hopping for each TAG (Timing Advance Group) group (that is, closed to the TAG group). That is, the terminal 20 may assume frequency hopping between a plurality of CCs corresponding to the TAG group.
  • TAG Transmission Advance Group
  • the terminal 20 may assume PUSCH frequency hopping for each cell group to which a plurality of CCs belong (that is, closed in the cell group). That is, the terminal 20 may assume frequency hopping between a plurality of CCs corresponding to the cell group.
  • FIG. 4 is a diagram showing an example (1) of repeated transmission in the embodiment of the present invention.
  • the terminal 20 assumes PUSCH frequency hopping transmission between a plurality of CCs, it is assumed that PUSCH repeated transmission and / or frequency hopping in RB (Resource Block) units within 1 CC is set.
  • RB Resource Block
  • a start symbol, a repeat length, or the like may be set as a setting for PUSCH repeat transmission, and a start RB, an RB offset, or the like may be set as a setting for frequency hopping.
  • FIG. 4 shows an example in which repetition 1 and repetition 4 are frequency positions at the start, and repetition 2 and repetition 3 are frequency positions to which an offset of frequency hopping is added.
  • FIG. 4 shows repeated transmission in slot units, it may be repeated transmission in symbol units within or between slots.
  • FIG. 5 is a diagram showing an example (2) of repeated transmission in the embodiment of the present invention.
  • the terminal 20 may assume that PUSCH repeated transmission and / or frequency hopping in CC units is set.
  • a start symbol, a repeat length, or the like may be set as a setting for PUSCH repeat transmission
  • a start RB, a CC offset, or the like may be set as a setting for frequency hopping.
  • FIG. 5 shows an example in which repetition 1 and repetition 4 are frequency positions at the start, and repetition 2 and repetition 3 are frequency positions to which an offset of frequency hopping is added.
  • FIG. 5 shows repeated transmission in slot units, it may be repeated transmission in symbol units within or between slots.
  • FIG. 6 is a diagram showing an example (3) of repeated transmission in the embodiment of the present invention.
  • the terminal 20 when assuming PUSCH frequency hopping transmission between a plurality of CCs, the terminal 20 performs RB unit PUSCH repeated transmission and / or frequency hopping within 1 CC, and CC unit PUSCH repeated transmission and /.
  • frequency hopping is set.
  • a start symbol, a repeat length, and the like may be set as PUSCH repeat transmission settings
  • a start RB, RB offset, CC offset, and the like may be set as frequency hopping settings.
  • FIG. 6 shows an example in which repetition 1 and repetition 4 are frequency positions at the start, and repetition 2 and repetition 3 are frequency positions to which an offset of frequency hopping is added.
  • FIG. 6 shows repeated transmission in slot units, it may be repeated transmission in symbol units within or between slots.
  • the above settings related to PUSCH repeated transmission and / or frequency hopping may be notified from the base station 10 to the terminal 20 by signaling such as RRC, MAC-CE, or DCI. Further, the terminal 20 may assume that only a part of the settings are updated by MAC-CE, DCI, or the like.
  • Switching between repeated transmission and frequency hopping shown in FIG. 4, repeated transmission and frequency hopping shown in FIG. 5, and repeated transmission and frequency hopping shown in FIG. 6 is performed by signaling such as RRC, MAC-CE, or DCI.
  • the base station 10 may notify the terminal 20. Further, the base station 10 may notify the terminal 20 of the switching to a communication method other than the above-mentioned repeated transmission and frequency hopping by signaling such as RRC, MAC-CE or DCI.
  • the terminal 20 assumes PUSCH frequency hopping transmission between a plurality of CCs in interband CA (Carrier Aggregation), it may be assumed as options 1) -7) shown below.
  • Option 1 When the terminal 20 assumes PUSCH frequency hopping transmission between a plurality of CCs in interband CA (Carrier Aggregation), it is assumed that PUSCH repeated transmission and / or frequency hopping in RB units within 1 CC is set. You may. For example, a start symbol, a repeat length, or the like may be set as a setting for PUSCH repeat transmission, and a start RB, an RB offset, or the like may be set as a setting for frequency hopping.
  • a start symbol, a repeat length, or the like may be set as a setting for PUSCH repeat transmission
  • a start RB, an RB offset, or the like may be set as a setting for frequency hopping.
  • Option 2 When the terminal 20 assumes PUSCH frequency hopping transmission between a plurality of CCs in interband CA, it may be assumed that PUSCH repeated transmission and / or frequency hopping in CC units is set.
  • a start symbol, a repeat length, or the like may be set as a setting for PUSCH repeat transmission
  • a start RB, a CC offset, or the like may be set as a setting for frequency hopping.
  • PUSCH frequency hopping transmission between a plurality of CCs in interband CA it may be assumed that PUSCH repeated transmission and / or frequency hopping for each band is set.
  • a start symbol, a repeat length, or the like may be set as a setting for PUSCH repeat transmission
  • a start RB, a band offset, or the like may be set as a setting for frequency hopping.
  • a start symbol, a repeat length, and the like may be set as PUSCH repeat transmission settings, and a start RB, RB offset, CC offset, and the like may be set as frequency hopping settings.
  • the terminal 20 assumes PUSCH frequency hopping transmission between a plurality of CCs in interband CA, the PUSCH repeated transmission and / or frequency hopping in RB units within 1 CC and the PUSCH repeated transmission and / or in band units It may be assumed that frequency hopping is set.
  • a start symbol, a repeat length, and the like may be set as PUSCH repeat transmission settings, and a start RB, RB offset, band offset, and the like may be set as frequency hopping settings.
  • the terminal 20 When the terminal 20 assumes PUSCH frequency hopping transmission between a plurality of CCs in interband CA, the terminal 20 performs PUSCH repeated transmission and / or frequency hopping in CC units and PUSCH repeated transmission and / or frequency hopping in band units. May be assumed to be set. For example, a start symbol, a repeat length, and the like may be set as PUSCH repeat transmission settings, and a start RB, CC offset, band offset, and the like may be set as frequency hopping settings.
  • Option 7 When the terminal 20 assumes PUSCH frequency hopping transmission between a plurality of CCs in interband CA, RB unit PUSCH repeated transmission and / or frequency hopping within 1 CC and CC unit PUSCH repeated transmission and / or It may be assumed that frequency hopping and band-based PUSCH repeat transmission and / or frequency hopping are set.
  • a start symbol, a repeat length, and the like may be set as PUSCH repeat transmission settings
  • a start RB, RB offset, CC offset, band offset, and the like may be set as frequency hopping settings.
  • the switching of the above options 1) -7) may be notified from the base station 10 to the terminal 20 by signaling such as RRC, MAC-CE or DCI. Further, switching to a communication method other than the above options may be notified from the base station 10 to the terminal 20 by signaling such as RRC, MAC-CE or DCI.
  • frequency hopping is similarly applied not only to PUSCH repeated transmission but also to PDSCH repeated transmission.
  • frequency hopping may mean a function of using different frequency resources for each predetermined unit in a certain transmission.
  • the above-mentioned repeated transmission and frequency hopping may be applied to all channels or signals transmitted from the terminal 20 such as PUCCH, SRS, and RACH.
  • non-SR-based may be replaced with “Configured grant”, “Grant free”, or the like. Even if “frequency hopping” is replaced with “frequency multiplexing”, “FDM (Frequency division multiplexing)", “frequency bundling”, “frequency repetition”, etc. good. Further, “PUSCH” may be replaced with "UL data”, “user data” and the like.
  • the terminal 20 can improve the reliability by applying the extended frequency hopping when repeatedly transmitting.
  • the base station 10 and the terminal 20 include a function of executing the above-described embodiment. However, the base station 10 and the terminal 20 may each have only the proposed function of any one of the embodiments.
  • FIG. 7 is a diagram showing an example of the functional configuration of the base station 10.
  • the base station 10 has a transmission unit 110, a reception unit 120, a setting unit 130, and a control unit 140.
  • the functional configuration shown in FIG. 7 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be performed.
  • the transmitting unit 110 and the receiving unit 120 may be referred to as a communication unit.
  • the transmission unit 110 includes a function of generating a signal to be transmitted to the terminal 20 side and transmitting the signal wirelessly.
  • the receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 and acquiring information of, for example, a higher layer from the received signals. Further, the transmission unit 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signal, DL data, etc. to the terminal 20. Further, the transmission unit 110 transmits the setting information and the like described in the embodiment.
  • the setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20 in the storage device, and reads them out from the storage device as needed.
  • the control unit 140 controls the entire base station 10 including resource allocation and frequency hopping, for example.
  • the function unit related to signal transmission in the control unit 140 may be included in the transmission unit 110, and the function unit related to signal reception in the control unit 140 may be included in the reception unit 120.
  • the transmitter 110 and the receiver 120 may be referred to as a transmitter and a receiver, respectively.
  • FIG. 8 is a diagram showing an example of the functional configuration of the terminal 20.
  • the terminal 20 has a transmission unit 210, a reception unit 220, a setting unit 230, and a control unit 240.
  • the functional configuration shown in FIG. 8 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be performed.
  • the transmitting unit 210 and the receiving unit 220 may be referred to as a communication unit.
  • the transmission unit 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
  • the receiving unit 220 wirelessly receives various signals and acquires a signal of a higher layer from the received signal of the physical layer. Further, the transmitting unit 210 transmits HARQ-ACK, and the receiving unit 220 receives the setting information and the like described in the embodiment.
  • the setting unit 230 stores various setting information received from the base station 10 by the receiving unit 220 in the storage device, and reads it out from the storage device as needed.
  • the setting unit 230 also stores preset setting information.
  • the control unit 240 controls the entire terminal 20 including frequency hopping.
  • the transmission unit 210 may include the function unit related to signal transmission in the control unit 240
  • the reception unit 220 may include the function unit related to signal reception in the control unit 240.
  • the transmitter 210 and the receiver 220 may be referred to as a transmitter and a receiver, respectively.
  • each functional block may be realized using one physically or logically coupled device, or two or more physically or logically separated devices can be directly or indirectly (eg, for example). , Wired, wireless, etc.) and may be realized using these plurality of devices.
  • the functional block may be realized by combining the software with the one device or the plurality of devices.
  • Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and assumption. Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but limited to these I can't.
  • a functional block (configuration unit) that makes transmission function is called a transmitting unit (transmitting unit) or a transmitter (transmitter).
  • the realization method is not particularly limited.
  • the base station 10, the terminal 20, and the like in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure.
  • FIG. 9 is a diagram showing an example of the hardware configuration of the base station 10 and the terminal 20 according to the embodiment of the present disclosure.
  • the above-mentioned base station 10 and terminal 20 are physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. May be good.
  • the word “device” can be read as a circuit, device, unit, etc.
  • the hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured not to include some of the devices.
  • the processor 1001 For each function in the base station 10 and the terminal 20, by loading predetermined software (program) on the hardware such as the processor 1001 and the storage device 1002, the processor 1001 performs an calculation and controls the communication by the communication device 1004. It is realized by controlling at least one of reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.
  • the processor 1001 operates, for example, an operating system to control the entire computer.
  • the processor 1001 may be configured by a central processing unit (CPU: Central Processing Unit) including an interface with peripheral devices, a control device, an arithmetic unit, a register, and the like.
  • CPU Central Processing Unit
  • control unit 140, control unit 240, and the like may be realized by the processor 1001.
  • the processor 1001 reads a program (program code), a software module, data, or the like from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002, and executes various processes according to these.
  • a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used.
  • the control unit 140 of the base station 10 shown in FIG. 7 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
  • the control unit 240 of the terminal 20 shown in FIG. 8 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001.
  • the various processes described above are executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001.
  • Processor 1001 may be mounted by one or more chips.
  • the program may be transmitted from the network via a telecommunication line.
  • the storage device 1002 is a computer-readable recording medium, and is, for example, by at least one of ROM (ReadOnlyMemory), EPROM (ErasableProgrammableROM), EEPROM (ElectricallyErasableProgrammableROM), RAM (RandomAccessMemory), and the like. It may be configured.
  • the storage device 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like.
  • the storage device 1002 can store a program (program code), a software module, or the like that can be executed to implement the communication method according to the embodiment of the present disclosure.
  • the auxiliary storage device 1003 is a computer-readable recording medium, and is, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, an optical magnetic disk (for example, a compact disk, a digital versatile disk, Blu).
  • -It may be composed of at least one of a ray (registered trademark) disk), a smart card, a flash memory (for example, a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, and the like.
  • the storage medium described above may be, for example, a database, server or other suitable medium containing at least one of the storage device 1002 and the auxiliary storage device 1003.
  • the communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like.
  • the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, and the like in order to realize at least one of frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex). It may be composed of.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the transmission / reception unit may be physically or logically separated from each other in the transmission unit and the reception unit.
  • the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts an input from the outside.
  • the output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside.
  • the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
  • each device such as the processor 1001 and the storage device 1002 is connected by the bus 1007 for communicating information.
  • the bus 1007 may be configured by using a single bus, or may be configured by using a different bus for each device.
  • the base station 10 and the terminal 20 are hardware such as a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array). It may be configured to include, and a part or all of each functional block may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these hardware.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • PLD Programmable Logic Device
  • FPGA Field Programmable Gate Array
  • a transmission unit that repeatedly transmits a physical uplink shared channel to a base station and frequency hopping between a plurality of component carriers are applied to the repeated transmission.
  • the control unit includes a control unit, and the control unit is provided with a terminal that determines the plurality of component carriers based on signaling from the base station or the type of the physical uplink shared channel.
  • the terminal 20 can improve reliability by applying extended frequency hopping when repeatedly transmitting. That is, in a wireless communication system, reliability in the case of repeated transmission can be improved.
  • the plurality of component carriers may correspond to a group of physical uplink control channels, a timing advance group, or a cell group.
  • the terminal 20 can improve reliability by applying extended frequency hopping between the associated CCs when repeatedly transmitting.
  • the transmission unit may notify the base station that the repeated transmission is to be executed and autonomously start the repeated transmission.
  • the terminal 20 can improve reliability by applying extended frequency hopping between the associated CCs when repeatedly transmitting.
  • the control unit may further apply frequency hopping between a plurality of bands and frequency hopping within one component carrier to the repeated transmission.
  • the terminal 20 can improve reliability by applying extended frequency hopping between bands, between CCs, and within 1 CC when repeatedly transmitting.
  • a transmission unit that transmits information for determining a plurality of component carriers to a terminal and a physical uplink shared channel to which frequency hopping is applied between the plurality of component carriers are repeatedly transmitted. Is provided with a base station having a receiving unit that receives the above from the terminal.
  • the terminal 20 can improve reliability by applying extended frequency hopping when repeatedly transmitting. That is, in a wireless communication system, reliability in the case of repeated transmission can be improved.
  • a transmission procedure for repeatedly transmitting a physical uplink shared channel to a base station, a control procedure for applying frequency hopping between a plurality of component carriers to the repeated transmission, and the above-mentioned A communication method is provided in which a terminal executes a procedure for determining a plurality of component carriers based on signaling from the base station or the type of the physical uplink shared channel.
  • the terminal 20 can improve reliability by applying extended frequency hopping when repeatedly transmitting. That is, in a wireless communication system, reliability in the case of repeated transmission can be improved.
  • the operation of the plurality of functional units may be physically performed by one component, or the operation of one functional unit may be physically performed by a plurality of components.
  • the processing order may be changed as long as there is no contradiction.
  • the base station 10 and the terminal 20 have been described with reference to functional block diagrams, but such devices may be implemented in hardware, software, or a combination thereof.
  • the software operated by the processor of the base station 10 according to the embodiment of the present invention and the software operated by the processor of the terminal 20 according to the embodiment of the present invention are random access memory (RAM), flash memory, and read-only memory, respectively. It may be stored in (ROM), EPROM, EPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.
  • information notification includes physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, etc. It may be carried out by broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof.
  • RRC signaling may be referred to as an RRC message, for example, RRC. It may be a connection setup (RRCConnectionSetup) message, an RRC connection reconfiguration (RRCConnectionReconfiguration) message, or the like.
  • Each aspect / embodiment described in the present disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), and 5G (5th generation mobile communication).
  • system FRA (Future Radio Access), NR (new Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)) )), LTE 802.16 (WiMAX®), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth®, and other systems that utilize appropriate systems and have been extended based on these. It may be applied to at least one of the next generation systems. Further, a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).
  • the specific operation performed by the base station 10 in the present specification may be performed by its upper node (upper node).
  • various operations performed for communication with the terminal 20 are performed by the base station 10 and other network nodes other than the base station 10 (for example, MME, S-GW, etc. are conceivable, but it is clear that it can be done by at least one of these).
  • MME, S-GW, etc. are conceivable, but it is clear that it can be done by at least one of these.
  • the case where there is one network node other than the base station 10 is illustrated, but the other network node may be a combination of a plurality of other network nodes (for example, MME and S-GW). ..
  • the information, signals, etc. described in the present disclosure can be output from the upper layer (or lower layer) to the lower layer (or upper layer). Input / output may be performed via a plurality of network nodes.
  • the input / output information and the like may be stored in a specific location (for example, memory) or may be managed using a management table. Information to be input / output may be overwritten, updated, or added. The output information and the like may be deleted. The input information or the like may be transmitted to another device.
  • the determination in the present disclosure may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparison of numerical values (for example). , Comparison with a predetermined value).
  • software, instructions, information, etc. may be transmitted and received via a transmission medium.
  • the software may use at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL: Digital Subscriber Line), etc.) and wireless technology (infrared, microwave, etc.) to create a website.
  • wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL: Digital Subscriber Line), etc.
  • wireless technology infrared, microwave, etc.
  • the information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.
  • a channel and a symbol may be a signal (signaling).
  • the signal may be a message.
  • the component carrier CC: Component Carrier
  • CC Component Carrier
  • system and “network” used in this disclosure are used interchangeably.
  • the information, parameters, etc. described in the present disclosure may be expressed using an absolute value, a relative value from a predetermined value, or another corresponding information. It may be represented.
  • the radio resource may be one indicated by an index.
  • base station Base Station
  • wireless base station base station
  • base station fixed station
  • NodeB nodeB
  • eNodeB eNodeB
  • gNodeB gNodeB gNodeB
  • Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.
  • the base station can accommodate one or more (eg, 3) cells. When a base station accommodates multiple cells, the entire base station coverage area can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (RRH:)). Communication services can also be provided by Remote Radio Head).
  • a base station subsystem eg, a small indoor base station (RRH:)
  • Communication services can also be provided by Remote Radio Head).
  • the term "cell” or “sector” refers to a portion or all of the coverage area of at least one of a base station and a base station subsystem that provides communication services in this coverage. Point to.
  • MS Mobile Station
  • UE User Equipment
  • Mobile stations can be used by those skilled in the art as subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless. It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
  • At least one of the base station and the 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 the mobile body, a mobile body itself, or the like.
  • the moving body may be a vehicle (eg, car, airplane, etc.), an unmanned moving body (eg, drone, self-driving car, etc.), or a robot (manned or unmanned). ) May be.
  • at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation.
  • at least one of a base station and a mobile station may be an IoT (Internet of Things) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be read by the user terminal.
  • the communication between the base station and the user terminal is replaced with the communication between a plurality of terminals 20 (for example, it may be referred to as D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.).
  • D2D Device-to-Device
  • V2X Vehicle-to-Everything
  • Each aspect / embodiment of the present disclosure may be applied to the configuration.
  • the terminal 20 may have the functions of the base station 10 described above.
  • words such as "up” and “down” may be read as words corresponding to communication between terminals (for example, "side”).
  • the upstream channel, the downstream channel, and the like may be read as a side channel.
  • the user terminal in the present disclosure may be read as a base station.
  • the base station may have the functions of the above-mentioned user terminal.
  • determining and “determining” used in this disclosure may include a wide variety of actions.
  • “Judgment” and “decision” are, for example, judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigation (investigating), search (looking up, search, inquiry). It may include (eg, searching in a table, database or another data structure), ascertaining as “judgment” or “decision”.
  • judgment and “decision” are receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access. It may include (for example, accessing data in memory) to be regarded as “judgment” or “decision”.
  • judgment and “decision” are considered to be “judgment” and “decision” when the things such as solving, selecting, choosing, establishing, and comparing are regarded as “judgment” and “decision”. Can include. That is, “judgment” and “decision” may include considering some action as “judgment” and “decision”. Further, “judgment (decision)” may be read as “assuming", “expecting”, “considering” and the like.
  • connection means any direct or indirect connection or connection between two or more elements and each other. It can include the presence of one or more intermediate elements between two “connected” or “combined” elements.
  • the connection or connection between the elements may be physical, logical, or a combination thereof.
  • connection may be read as "access”.
  • the two elements use at least one of one or more wires, cables and printed electrical connections, and as some non-limiting and non-comprehensive examples, the radio frequency region.
  • Electromagnetic energies with wavelengths in the microwave and light (both visible and invisible) regions, etc. can be considered to be “connected” or “coupled” to each other.
  • the reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot (Pilot) depending on the applied standard.
  • RS Reference Signal
  • Pilot Pilot
  • references to elements using designations such as “first” and “second” as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Therefore, references to the first and second elements do not mean that only two elements can be adopted, or that the first element must somehow precede the second element.
  • each of the above devices may be replaced with a "part”, a “circuit”, a “device”, or the like.
  • the wireless frame may be composed of one or more frames in the time domain. Each one or more frames in the time domain may be referred to as a subframe.
  • the subframe may further be composed of one or more slots in the time domain.
  • the subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.
  • the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel.
  • Numerology includes, for example, subcarrier interval (SCS: SubCarrier Spacing), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI: Transmission Time Interval), number of symbols per TTI, wireless frame configuration, transmitter / receiver. It may indicate at least one of a specific filtering process performed in the frequency domain, a specific windowing process performed by the transmitter / receiver in the time domain, and the like.
  • the slot may be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.) in the time region. Slots may be time units based on numerology.
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • the slot may include a plurality of mini slots.
  • Each minislot may be composed of one or more symbols in the time domain. Further, the mini-slot may be referred to as a sub-slot.
  • a minislot may consist of a smaller number of symbols than the slot.
  • PDSCH (or PUSCH) transmitted in time units larger than the minislot may be referred to as PDSCH (or PUSCH) mapping type A.
  • the PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (or PUSCH) mapping type B.
  • the wireless frame, subframe, slot, minislot and symbol all represent the time unit when transmitting a signal.
  • the radio frame, subframe, slot, minislot and symbol may use different names corresponding to each.
  • one subframe may be called a transmission time interval (TTI), a plurality of consecutive subframes may be called TTI, and one slot or one minislot may be called TTI.
  • TTI transmission time interval
  • You may. That is, at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1-13 symbols), or a period longer than 1 ms. May be.
  • the unit representing TTI may be called a slot, a mini slot, or the like instead of a subframe.
  • TTI refers to, for example, the minimum time unit of scheduling in wireless communication.
  • the base station schedules each terminal 20 to allocate radio resources (frequency bandwidth that can be used in each terminal 20, transmission power, etc.) in TTI units.
  • the definition of TTI is not limited to this.
  • the TTI may be a transmission time unit such as a channel-coded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation.
  • the time interval for example, the number of symbols
  • the transport block, code block, code word, etc. may be shorter than the TTI.
  • one or more TTIs may be the minimum time unit for scheduling. Further, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
  • a TTI having a time length of 1 ms may be referred to as a normal TTI (TTI in LTE Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, or the like.
  • a TTI shorter than a normal TTI may be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a minislot, a subslot, a slot, or the like.
  • the long TTI (for example, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms
  • the short TTI (for example, shortened TTI, etc.) may be read as a TTI less than the TTI length of the long TTI and 1 ms. It may be read as a TTI having the above TTI length.
  • the resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers in the frequency domain.
  • the number of subcarriers contained in the RB may be the same regardless of the numerology, and may be, for example, 12.
  • the number of subcarriers contained in the RB may be determined based on numerology.
  • the time domain of the RB may include one or more symbols, and may have a length of 1 slot, 1 mini slot, 1 subframe, or 1 TTI.
  • Each 1TTI, 1 subframe, etc. may be composed of one or a plurality of resource blocks.
  • One or more RBs include a physical resource block (PRB: Physical RB), a sub-carrier group (SCG: Sub-Carrier Group), a resource element group (REG: Resource Element Group), a PRB pair, an RB pair, and the like. May be called.
  • PRB Physical resource block
  • SCG Sub-Carrier Group
  • REG Resource Element Group
  • PRB pair an RB pair, and the like. May be called.
  • the resource block may be composed of one or a plurality of resource elements (RE: Resource Element).
  • RE Resource Element
  • 1RE may be a radio resource area of 1 subcarrier and 1 symbol.
  • the bandwidth part (which may also be called partial bandwidth) may represent a subset of consecutive common resource blocks (RBs) for a certain neurology in a carrier.
  • RBs common resource blocks
  • PRBs may be defined in a BWP and numbered within that BWP.
  • the BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP).
  • UL BWP UL BWP
  • DL BWP DL BWP
  • One or more BWPs may be set in one carrier for the terminal 20.
  • At least one of the configured BWPs may be active, and the terminal 20 does not have to assume that a predetermined signal / channel is transmitted or received outside the active BWP.
  • “cell”, “carrier” and the like in this disclosure may be read as “BWP”.
  • the above-mentioned structures such as wireless frames, subframes, slots, mini slots and symbols are merely examples.
  • the number of subframes contained in a radio frame the number of slots per subframe or radioframe, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, included in the RB.
  • the number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP: Cyclic Prefix) length, and other configurations can be changed in various ways.
  • the term "A and B are different” may mean “A and B are different from each other”.
  • the term may mean that "A and B are different from C”.
  • Terms such as “separate” and “combined” may be interpreted in the same way as “different”.
  • the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.
  • PUSCH is an example of a physical uplink shared channel.
  • PUCCH is an example of a physical uplink control channel.
  • Base station 110 Transmission unit 120 Reception unit 130 Setting unit 140 Control unit 20 Terminal 210 Transmission unit 220 Reception unit 230 Setting unit 240 Control unit 30 Core network 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Ce terminal comprend une unité de transmission pour exécuter des transmissions répétées d'un canal physique partagé montant à une station de base, et une unité de commande pour appliquer un saut de fréquence parmi une pluralité de porteuses composantes aux transmissions répétées, l'unité de commande déterminant la pluralité de porteuses composantes sur la base d'une signalisation en provenance de la station de base ou du type du canal physique partagé montant.
PCT/JP2021/000238 2021-01-06 2021-01-06 Terminal, station de base et procédé de communication WO2022149223A1 (fr)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO2024055137A1 (fr) * 2022-09-12 2024-03-21 Qualcomm Incorporated Détection de commutation de signal de référence à travers des composants de porteuse

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Publication number Priority date Publication date Assignee Title
WO2015114694A1 (fr) * 2014-01-30 2015-08-06 日本電気株式会社 Terminal machine-machine (m2m), station de base, procédé et support lisible par un ordinateur
WO2016047628A1 (fr) * 2014-09-26 2016-03-31 京セラ株式会社 Station de base et station mobile
JP2020048110A (ja) * 2018-09-20 2020-03-26 シャープ株式会社 端末装置および基地局装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015114694A1 (fr) * 2014-01-30 2015-08-06 日本電気株式会社 Terminal machine-machine (m2m), station de base, procédé et support lisible par un ordinateur
WO2016047628A1 (fr) * 2014-09-26 2016-03-31 京セラ株式会社 Station de base et station mobile
JP2020048110A (ja) * 2018-09-20 2020-03-26 シャープ株式会社 端末装置および基地局装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024055137A1 (fr) * 2022-09-12 2024-03-21 Qualcomm Incorporated Détection de commutation de signal de référence à travers des composants de porteuse

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