WO2022196770A1 - Équipement terminal, dispositif de station de base et procédé de communication - Google Patents

Équipement terminal, dispositif de station de base et procédé de communication Download PDF

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Publication number
WO2022196770A1
WO2022196770A1 PCT/JP2022/012363 JP2022012363W WO2022196770A1 WO 2022196770 A1 WO2022196770 A1 WO 2022196770A1 JP 2022012363 W JP2022012363 W JP 2022012363W WO 2022196770 A1 WO2022196770 A1 WO 2022196770A1
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WO
WIPO (PCT)
Prior art keywords
bandwidth
terminal device
cell
pbch
redcap
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Application number
PCT/JP2022/012363
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English (en)
Japanese (ja)
Inventor
宏樹 高橋
昇平 山田
麗清 劉
猛 程
Original Assignee
シャープ株式会社
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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Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Priority to JP2023507185A priority Critical patent/JPWO2022196770A1/ja
Publication of WO2022196770A1 publication Critical patent/WO2022196770A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information

Definitions

  • An object of the present invention is to provide a terminal device, a base station device, and a communication method that enable efficient communication in the wireless communication system as described above.
  • a terminal device in one aspect of the present invention comprises a receiving unit for receiving a system information block including first information for setting parameters of a first cell, and a processing unit, wherein the first information is , a parameter indicating the carrier bandwidth of the first cell, a parameter indicating the bandwidth of the initial uplink BWP of the first cell, and a parameter indicating the maximum allocated bandwidth of the first cell.
  • FIG. 4 is a diagram showing an example of the relationship between carrier bandwidth, initial uplink BWP, maximum allocated bandwidth, and uplink channel bandwidth and uplink allocated bandwidth supported by terminal device 1 in a certain cell according to the embodiment of the present invention; .
  • FIG. 10 is a flow chart showing another example of the restricted cell determination process in the terminal device 1 according to the embodiment of the present invention. It is a figure showing an example of beamforming concerning an embodiment of the present invention.
  • 1 is a schematic block diagram showing the configuration of a terminal device 1 according to an embodiment of the present invention
  • FIG. 1 is a schematic block diagram showing the configuration of a base station device 3 according to an embodiment of the present invention
  • OFDM symbols are used as the transmission method in the present embodiment, a case of using the other transmission method described above is also included in one aspect of the present invention.
  • TDD Time Division Duplex
  • FDD Frequency Division Duplex
  • a TDD (Time Division Duplex) scheme or an FDD (Frequency Division Duplex) scheme may be applied to all of the plurality of cells.
  • a cell to which the TDD scheme is applied and a cell to which the FDD scheme is applied may be aggregated.
  • the TDD scheme may be referred to as unpaired spectrum operation.
  • the FDD scheme may be referred to as paired spectrum operation.
  • FIG. 3 is a diagram showing an example of the relationship between subframes, slots, and minislots in the time domain.
  • a subframe is 1 ms regardless of subcarrier spacing, and the number of OFDM symbols included in a slot is 7 or 14 (however, if the cyclic prefix (CP) added to each symbol is Extended CP, 6 or 12), the slot length depends on the subcarrier spacing.
  • CP cyclic prefix
  • 6 or 12 Extended CP, 6 or 12
  • the slot length depends on the subcarrier spacing.
  • the subcarrier interval is 15 kHz
  • 14 OFDM symbols are included in one subframe.
  • a downlink slot may be referred to as PDSCH mapping type A.
  • the uplink slot may be referred to as PUSCH mapping type A.
  • the REDCAP PBCH may be used to broadcast a REDCAP important information block (also called REDCAP MIB, REDCAP EIB, REDCAP BCH, R-MIB) containing important system information required by the terminal device 1.
  • REDCAP MIB may be used only for the terminal device 1 that satisfies specific conditions (for example, indicates specific parameters in UE Capability and/or UE Category).
  • Terminal device 1 determines PDCCH monitoring opportunities from searchSpaceZero in PDCCH-ConfigSIB1-RC. However, the value indicated by searchSpaceZero is applied to a given table as an index. However, the terminal device 1 may determine the table to apply based on the supported UE category and/or UE Capability. However, the terminal device 1 may determine the table to apply based on the frequency range. However, the terminal device 1 may determine the table to apply based on the multiplexing pattern of REDCAP PBCH and CORESET. FIG. 6 shows an example of a table to which the value of searchSpaceZero is applied as an index.
  • the terminal device 1 receives the REDCAP MIB including the RRC parameter PDCCH-repetitions on the REDCAP PBCH, determines the number of repetition transmissions of the PDCCH indicating the scheduling information of the REDCAP SIB1 based on the PDCCH-repetitions, and the PDCCH-repetitions is predetermined. , it is considered that the PDCCH has not been transmitted.
  • DCI format 0_0 may be used for PUSCH scheduling in a serving cell.
  • DCI format 0_0 may include information indicating PUSCH scheduling information (frequency domain resource allocation and time domain resource allocation).
  • DCI format 0_0 is a Radio Network Temporary Identifier (RNTI), Cell-RNTI (C-RNTI), Configured Scheduling (CS)-RNTI), MCS-C-RNTI, and/or Temporary C-NRTI.
  • RNTI Radio Network Temporary Identifier
  • C-RNTI Cell-RNTI
  • CS-RNTI Configured Scheduling
  • MCS-C-RNTI MCS-C-RNTI
  • Temporary C-NRTI Temporary C-NRTI.
  • a CRC Cyclic Redundancy Check
  • TC-RNTI Cyclic Redundancy Check
  • ZP CSI-RS may be defined as a CSI-RS resource with zero transmit power or no transmission
  • PTRS is used to track phase over time in order to compensate for frequency offsets caused by phase noise.
  • TRS is used to ensure Doppler shift when moving at high speed.
  • TRS may be used as one setting of CSI-RS.
  • CSI-RS of one port is wireless as TRS. Resources may be configured.
  • the PSS may be mapped to the first symbol in the SS/PBCH block (the OFDM symbol whose OFDM symbol number is 0 relative to the start symbol of the SS/PBCH block).
  • the PSS sequence consists of 127 symbols, and the 57th to 183rd subcarriers in the SS/PBCH block (the subcarriers with subcarrier numbers 56 to 182 relative to the starting subcarrier of the SS/PBCH block) ).
  • SS/PBCH blocks with the same relative time within each SS burst set in multiple SS burst sets may be assigned the same SSB index.
  • SS/PBCH blocks with the same relative time within each SS burst set in multiple SS burst sets may be assumed to be QCL (or have the same downlink transmit beam applied).
  • antenna ports in SS/PBCH blocks with the same relative time within each SS burst set in multiple SS burst sets may be assumed to be QCL with respect to mean delay, Doppler shift, and spatial correlation.
  • the REDCAP PBCH according to this embodiment is transmitted in OFDM symbols associated with corresponding SS/PBCH blocks or corresponding synchronization signals (PSS, SSS).
  • the time position of the half-frame to which the REDCAP PBCH block is mapped is combined with information identifying the SFN and/or information identifying the half-frame contained in the PBCH of the corresponding SS/PBCH block and/or the REDCAP PBCH of the REDCAP PBCH block. It may be identified based on the time offsets of the corresponding SS/PBCH blocks and REDCAP PBCH blocks. However, the information identifying the SFN and/or the information identifying the half-frame included in the REDCAP PBCH of the REDCAP PBCH block may be the information identifying the SFN and half-frame in which the corresponding SS/PBCH block is transmitted.
  • a terminal device 1 that receives a REDCAP PBCH block may identify the SFN and half-frame in which the corresponding SS/PBCH block is transmitted based on the received REDCAPPBCH block.
  • the terminal device 1 receives the PSS and SSS in the SS/PBCH block, and receives the PBCH in the SS/PBCH block and/or one or more REDCAP PBCHs corresponding to the SS/PBCH block. do.
  • the terminal device 1 can improve the detection accuracy of the MIB or the REDCAP MIB, and can expand the cell coverage in which the terminal device 1 can receive the MIB or the REDCAP MIB.
  • the terminal device 1 that receives the REDCAP PBCH may be only the terminal device 1 having a predetermined capability.
  • the initial uplink BWP may be defined/configured in the initialUplinkBWP provided in SIB1 (REDCAP SIB1, or other SIBs).
  • the terminal device 1 may determine the initial uplink BWP based on the initialUplinkBWP provided by the received SIB1.
  • Terminal device 1 may be configured with multiple initial uplink sub-BWPs by SIB1.
  • the terminal device 1 may determine one or more initial uplink sub-BWPs based on the initialUplinkBWP provided by SIB1. At least one of the multiple initial uplink sub-BWPs may be configured to include physical random access channel resources.
  • the terminal device 1 may operate considering the initial uplink sub-BWP as the initial uplink BWP.
  • Multiple initial uplink sub-BWPs may be regarded as multiple initial uplink BWPs.
  • Multiple initial uplink sub-BWPs may be designed to be included in the frequency band of one initial uplink BWP.
  • the initial uplink sub-BWP may also be referred to as an uplink BWP or an uplink sub-BWP.
  • the SCS-SpecificCarrier may contain parameters indicating the actual carrier position, bandwidth, and carrier bandwidth. More specifically, the information element SCS-SpecificCarrier in frequencyInfoDL indicates settings for a specific carrier and includes subcarrierSpacing, carrierbandwidth and/or offsetToCarrier.
  • subcarrierSpacing is a parameter that indicates the subcarrier spacing of the carrier (for example, FR1 indicates 15 kHz or 30 kHz, and FR2 indicates 60 kHz or 120 kHz).
  • carrierbandwidth is a parameter that indicates the bandwidth of the carrier in terms of the number of PRBs (Physical Resource Blocks).
  • allocationBandwidth may be a parameter included in the SCS-SpecificCarrier information element.
  • the information indicating the maximum allocation bandwidth indicated by allocationBandwidth may be the number of resource blocks corresponding to the subcarrier interval indicated by subcarrierSpacing of the SCS-SpecificCarrier information element including the parameter.
  • the information indicating the maximum allocated bandwidth may be information specifying the maximum allocated bandwidth by a ratio value with respect to the carrier bandwidth notified by SCS-SpecificCarrier.
  • the terminal device 1 may regard the cell as a restricted cell. However, if the downlink channel allocation bandwidth supported by the terminal device 1 is narrower than the maximum allocated bandwidth, the terminal device 1 may regard the cell as a restricted cell.
  • Each entry in the list of information indicating frequency locations and bandwidths may correspond to each of a plurality of initial uplink sub-BWPs.
  • Each entry in the list of information indicating frequency location and bandwidth may be a BWP information element (subcarrierSpacing, locationAndBandwidth, cyclicPrefix, etc.).
  • the multiple initial uplink sub-BWPs have a common bandwidth, and initialUplinkBWP-rc may indicate a list of frequency locations of the initial uplink sub-BWPs and the common bandwidth.
  • the terminal device 1 When the terminal device 1 does not support any frequency band for the TDD downlink and the frequency band for the FDD uplink for the frequency bands indicated in the frequencyBandList included in the frequencyInfoDL and the frequencyBandList included in the frequencyInfoUL.
  • the cell may be regarded as a regulation cell.
  • the terminal device 1 supports one or more frequency bands for the TDD downlink for the frequency bands indicated in frequencyBandList included in frequencyInfoDL, or the terminal device 1 is included in frequencyInfoUL
  • the terminal device 1 determines whether the cell is a regulated cell based on whether one or more frequency bands for the FDD uplink are supported for the frequency bands indicated in frequencyBandList.
  • the terminal device 1 may determine whether a cell is a regulated cell based on the bandwidths of a plurality of initial uplink sub-BWPs set by the received SIB1 corresponding to the cell. Based on whether the terminal device 1 supports an uplink bandwidth that is the same as or wider than the widest bandwidth among the bandwidths of each of the multiple initial uplink sub-BWPs set by SIB1, the cell is It may determine whether it is a regulated cell. For example, if the terminal device 1 does not support an uplink bandwidth equal to or wider than the widest bandwidth among the bandwidths of each of the multiple initial uplink sub-BWPs set by SIB1, the terminal device 1 , the cell may be regarded as a regulation cell.
  • the carrier bandwidth may be the carrier bandwidth corresponding to the subcarrier spacing of the initial uplink BWP set in the received SIB1.
  • the carrier bandwidth may be a carrier bandwidth corresponding to a subcarrier interval common to multiple initial uplink sub-BWPs set in the received SIB1.
  • parameters set in SIB1 may be broadcast in SIB1 (or REDCAP SIB1), may be broadcast in another SIB (or REDCAP SIB), or may be notified in an RRC message.
  • Beam management consists of analog and/or digital beams at the transmitting device (base station device 3 for the downlink and terminal device 1 for the uplink) and the receiving device (terminal device 1 for the downlink). , the base station device 3 in the case of uplink) to align analog and/or digital beams and obtain beam gain.
  • the reception beam that receives the signal from antenna port 1 receives the signal from antenna port 2. It means that the beam can be inferred.
  • the upper layer processing unit 14 outputs uplink data (which may be referred to as a transport block) generated by a user's operation or the like to the radio transmitting/receiving unit 10.
  • the upper layer processing unit 14 includes a medium access control (MAC) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, a radio resource control (Radio Resource Control: Handles all or part of the RRC layer.
  • the upper layer processing unit 14 has a function of acquiring bit information of the MIB (which may be the REDCAP MIB), SIB1 (which may be the REDCAP SIB1), and other SIBs (which may be the REDCAP SIB).
  • the upper layer processing unit 14 may have a function of determining whether a cell is a restricted cell based on information in system information blocks (SIB1, REDCAP SIB1, SIB and/or REDCAP SIB).
  • the baseband unit 13 converts the analog signal input from the RF unit 12 into a digital signal.
  • the baseband unit 13 removes the portion corresponding to the CP (Cyclic Prefix) from the converted digital signal, performs Fast Fourier Transform (FFT) on the CP-removed signal, and converts the signal in the frequency domain to Extract.
  • FFT Fast Fourier Transform
  • the upper layer processing unit 34 includes a medium access control (MAC) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, a radio resource control (Radio Resource Control: Handles all or part of the RRC layer.
  • the upper layer processing unit 34 may have a function of generating DCI based on the upper layer signal transmitted to the terminal device 1 and the time resource for transmitting the PUSCH.
  • the upper layer processing unit 34 may have a function of outputting the generated DCI and the like to the radio transmitting/receiving unit 30 .
  • the upper layer processing unit 34 may have a function of generating bit information of the MIB transport block.
  • the upper layer processing unit 34 may have a function of generating bit information of transport blocks of the REDCAP MIB.
  • the upper layer processing unit 34 may have a function to generate a system information block (SIB1, REDCAP SIB1, SIB and/or REDCAP SIB) containing information for the terminal device to determine whether a given cell is a
  • the radio transmitting/receiving unit 30 transmits an upper layer signal (RRC message), DCI, etc. to the terminal device 1 . Also, the radio transmitting/receiving unit 30 receives an uplink signal transmitted from the terminal device 1 based on an instruction from the upper layer processing unit 34 .
  • the radio transmitting/receiving unit 30 may have a function of transmitting PDCCH and/or PDSCH.
  • the radio transceiver 30 may be capable of receiving one or more PUCCHs and/or PUSCHs.
  • the radio transmitting/receiving unit 30 may have a function of transmitting DCI on the PDCCH.
  • the radio transmitting/receiving unit 30 may have a function of transmitting the DCI output by the upper layer processing unit 34 on the PDCCH.
  • the radio transmitting/receiving unit 30 may have a function of transmitting SSB, PSS, SSS, PBCH, DMRS for PBCH, REDCAP PBCH, and/or DMRS for REDCAP PBCH.
  • the radio transmitting/receiving unit 30 may have a function of transmitting SS/PBCH blocks and/or REDCAP PBCH blocks.
  • the radio transmitting/receiving unit 30 may have a function of transmitting RRC messages (which may be RRC parameters).
  • the wireless transmission/reception unit 30 may have a function for the terminal device 1 to transmit system information blocks (SIB1, REDCAP SIB1, SIB and/or REDCAP SIB).
  • the terminal device 1 comprises a receiving unit 10 for receiving a system information block containing first information for setting the parameters of the first cell, and a processing unit 14,
  • the first information includes a parameter (carrierbandwidth) indicating the carrier bandwidth of the first cell, a parameter (initialDownlinkBWP, locationAndBandwidth) indicating the bandwidth of the initial downlink BWP of the first cell, and the first and a parameter (allocationBandwidth) indicating the maximum allocated bandwidth of the cell
  • the processing unit 14 determines the maximum transmission bandwidth of the bandwidth equal to or less than the carrier bandwidth and equal to or greater than the bandwidth of the initial downlink BWP.
  • One aspect of the present invention is, for example, a communication system, a communication device (e.g., a mobile phone device, a base station device, a wireless LAN device, or a sensor device), an integrated circuit (e.g., a communication chip), or a program, etc. be able to.
  • a communication device e.g., a mobile phone device, a base station device, a wireless LAN device, or a sensor device
  • an integrated circuit e.g., a communication chip
  • a program etc. be able to.

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

Abstract

Cet équipement terminal reçoit un SIB comprenant des premières informations d'une première cellule, lesdites premières informations contenant un paramètre indiquant la bande passante de porteuse, un paramètre indiquant la bande passante de la BWP UL initiale, et un paramètre indiquant la bande passante allouée maximale. L'équipement terminal détermine également si la première cellule est une cellule limitée ou non, sur la base du fait qu'il existe ou non un support pour une bande passante de canal UL qui n'est pas supérieure à la bande passante de porteuse et qui n'est pas inférieure à la bande passante de BWP UL initiale, et du fait qu'il existe ou non un support pour une bande passante allouée qui est égale ou supérieure à la bande passante allouée maximale.
PCT/JP2022/012363 2021-03-19 2022-03-17 Équipement terminal, dispositif de station de base et procédé de communication WO2022196770A1 (fr)

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JP2023507185A JPWO2022196770A1 (fr) 2021-03-19 2022-03-17

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JP2021045413 2021-03-19
JP2021-045413 2021-03-19

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WO (1) WO2022196770A1 (fr)

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
HUAWEI, HISILICON: "On the bandwidth of initial BWP", 3GPP DRAFT; R4-1909102 ON THE BANDWIDTH OF INITIAL BWP, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG4, no. Ljubljana, Slovenia; 20190826 - 20190830, 16 August 2019 (2019-08-16), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051772007 *
NOKIA, NOKIA SHANGHAI BELL: "UE Complexity Reduction", 3GPP DRAFT; R1-2100499, 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, 18 January 2021 (2021-01-18), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051970412 *
SHARP: "Discussion on UE complexity reduction", 3GPP DRAFT; R1-2101542, 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 , XP051971707 *

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