WO2019184484A1 - Procédés et appareils d'indication et de détermination de ressources - Google Patents

Procédés et appareils d'indication et de détermination de ressources Download PDF

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Publication number
WO2019184484A1
WO2019184484A1 PCT/CN2018/124041 CN2018124041W WO2019184484A1 WO 2019184484 A1 WO2019184484 A1 WO 2019184484A1 CN 2018124041 W CN2018124041 W CN 2018124041W WO 2019184484 A1 WO2019184484 A1 WO 2019184484A1
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Prior art keywords
information
pucch
resource
index
dci
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PCT/CN2018/124041
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English (en)
Chinese (zh)
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缪德山
高雪娟
托尼
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电信科学技术研究院有限公司
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Publication of WO2019184484A1 publication Critical patent/WO2019184484A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present application relates to the field of communications technologies, and in particular, to resource indication, determining methods, and devices.
  • PUCCH Physical Uplink Control Channel
  • ACK acknowledgement
  • NACK non-acknowledgement
  • the Physical Downlink Control Channel (PDCCH) of the Physical Downlink Shared Channel (PDSCH), which is a physical downlink control channel (PDCCH) corresponds to a specific PUCCH resource.
  • the PDCCH of the scheduling information (message 4) is mapped to one PUCCH resource to carry the feedback of the ACK/NACK.
  • the embodiment of the present application provides a resource indication, a determining method, and a device, to implement a more flexible PUCCH resource indication and determination scheme.
  • a resource indication method provided by the embodiment of the present application includes:
  • Determining resource indication information for instructing the terminal to determine a physical uplink control channel PUCCH resource where the resource indication information includes downlink control information DCI, where the DCI is used to determine a resource index in a PUCCH resource set; the PUCCH resource set Indicated to the terminal by the remaining minimum system information RMSI;
  • the resource indication information used by the terminal to determine the physical uplink control channel PUCCH resource where the resource indication information includes downlink control information DCI, where the DCI is used to determine a resource index in the PUCCH resource set;
  • the set of PUCCH resources is indicated to the terminal by the remaining minimum system information RMSI; the resource indication information is sent to the terminal, so that the PUCCH resource set can be indicated by the RMSI, and the resource index in the PUCCH resource set can be dynamically indicated by the DCI.
  • RMSI remaining minimum system information
  • a more flexible PUCCH resource indication scheme is implemented to avoid resource conflicts and waste.
  • the method before the sending the resource indication information to the terminal, the method further includes:
  • the PUCCH resource set can be indicated to the terminal by the RMSI.
  • the PUCCH resource set may be pre-agreed in the embodiment of the present application, and the network side does not need to indicate the PUCCH resource set to the terminal by using the RMSI, or only when the PUCCH resource set needs to be updated, the latest PUCCH resource set is indicated by the RMSI. terminal.
  • the resource indication information further includes implicit information.
  • the implicit information in the embodiment of the present application may be different from the DCI, that is, not belonging to the DCI, and may be used together with the DCI for the indication of the PUCCH resource index, and may also be used for the indication of other information related to the PUCCH resource, so that The application of the resource indication information is flexible, and the resource indication is flexible and variable.
  • the DCI and the implicit information occupy a 4-bit information field, wherein the recessive information occupies a 1-bit information field.
  • the number of bits occupied by the DCI and the implicit information may be set according to actual needs, and the number of bits occupied by the implicit information.
  • the implicit information is indicated by a minimum control channel element CCE index of the PDCCH.
  • the CCECH resource related information can be indicated using the CCE index.
  • the implicit information is at a high level of 4 bits, or at a low level of 4 bits. That is, the 1-bit recessive information may be located in a higher bit of the 4-bit information field occupied by the DCI, or a lower bit, for example, the 1-bit recessive information is located in the first bit or the last bit of the 4-bit information field. Bit.
  • the specific location can be pre-agreed according to actual needs.
  • the implicit information separately indicates frequency hopping or cyclic shift information of the PUCCH. Therefore, the frequency hopping or cyclic shift information of the PUCCH can be separately indicated by the recessive information in the DCI, so that the indication of the PUCCH resource related information is more flexible and diverse.
  • each resource index of the PUCCH corresponds to a cyclic shift CS index, where multiple orthogonal mask OCCs are configured in the same PRB, and multiple cyclic shift indexes correspond to the same orthogonal mask.
  • the adjacent cyclic shift index corresponds to a different orthogonal mask OCC.
  • ⁇ 0, 4, 8 ⁇ corresponds to the OCC code 1
  • ⁇ 2, 6, 10 ⁇ corresponds to the OCC code 2 so that the OCCs of two adjacent CSs are orthogonal, which can maximize the suppression of interference between users. .
  • the PUCCH resource set includes at least 16 PUCCH resources, and the DCI occupies at least 4 bit information fields.
  • the PUCCH resource set may further include other numbers of PUCCH resources, and correspondingly, the DCI may also occupy other information fields of the number of bits.
  • the DCI indicates the domain indication only through dedicated PUCCH information
  • the DCI is jointly formed by a dedicated PUCCH information indication field and an information domain other than the dedicated PUCCH information indication domain.
  • the DCI may not only indicate the domain indication through the dedicated PUCCH information, but also may jointly indicate by the dedicated PUCCH information indication domain and the information domain other than the dedicated PUCCH information indication domain, that is, the DCI
  • the indication method is very flexible and can be determined according to actual needs.
  • the dedicated PUCCH information indicates an information field outside the domain, including a downlink scheduling signaling index DAI information bit or a part or all bits of a hybrid automatic repeat request HARQ information bit field, for indicating a PUCCH resource index. Or used to indicate PUCCH parameters.
  • the PUCCH resource index or the PUCCH parameter may be indicated by some or all of the bits in the HARQ information bit field through DAI information bits or hybrid automatic repeat request.
  • the dedicated PUCCH information indicates an information field outside the domain, including a downlink scheduling signaling index DAI information bit, used to indicate a PUCCH parameter.
  • the PUCCH parameters can be indicated by the DAI information bits.
  • the PUCCH parameter includes one or a combination of the following:
  • the information content of the PUCCH start symbol, the index of the PUCCH physical resource block PRB, whether the offset is based on the specified PUCCH start symbol, whether the offset is based on the specified physical resource block PRB index, or the like may be indicated by the DAI information bit.
  • the set of resources indicated by the RMSI is determined by at least an indicated parameter cyclic shift CS interval or a minimum cyclic shift interval, and a PRB offset value;
  • the cyclic shift CS interval or the minimum cyclic shift interval indicated by the RMSI is used to determine a PUCCH resource number of each PRB bearer, and the RMSI indicates a PRB offset value for determining a starting position of the PRB.
  • a resource determining method provided by the embodiment of the present application includes:
  • resource indication information that is sent by the network side to indicate that the terminal determines a physical uplink control channel PUCCH resource, where the resource indication information includes downlink control information DCI, where the DCI is used to determine a resource index in a PUCCH resource set;
  • the set of PUCCH resources is indicated to the terminal by the RMSI;
  • a PUCCH resource is determined according to the resource indication information and the RMSI.
  • the resource indication information that is sent by the network side to indicate that the terminal determines the physical uplink control channel PUCCH resource is obtained by the method, where the resource indication information includes downlink control information DCI, where the DCI is used to determine the PUCCH resource set. a resource index; the PUCCH resource set is indicated to the terminal by the RMSI; the PUCCH resource is determined according to the resource indication information and the RMSI, and therefore, the PUCCH resource set may be determined by the RMSI, and the PUCCH resource set is determined by using resource indication information such as DCI.
  • the resources in the network can be more flexible to determine PUCCH resources through DCI and RMSI.
  • the method before acquiring the resource indication information sent by the network side, the method further includes:
  • a PUCCH resource set can be determined.
  • the PUCCH resource set may be pre-agreed, and the RMSI sent by the network side may not be acquired, or the RMSI sent by the network side may be acquired only when the PUCCH resource set is updated, and the latest PUCCH is determined by the RMSI. Resource collection.
  • the resource indication information further includes implicit information.
  • the DCI and the implicit information occupy a 4-bit information field, wherein the recessive information occupies a 1-bit information field.
  • the implicit information is indicated by a minimum control channel element CCE index of the PDCCH.
  • the implicit information is at a high level of 4 bits, or at a low level of 4 bits.
  • the implicit information separately indicates frequency hopping or cyclic shift information of the PUCCH.
  • each resource index of the PUCCH corresponds to a cyclic shift CS index, where multiple orthogonal mask OCCs are configured in the same PRB, and multiple cyclic shift indexes correspond to the same orthogonal mask.
  • the adjacent cyclic shift index corresponds to a different orthogonal mask OCC.
  • the PUCCH resource set includes at least 16 PUCCH resources, and the DCI occupies at least 4 bit information fields.
  • the DCI indicated by the network side is obtained only by using a dedicated PUCCH information indication domain
  • the DCI indicated by the network side is obtained by using a dedicated PUCCH information indication domain and an information domain other than the dedicated PUCCH information indication domain.
  • the dedicated PUCCH information indicates an information field outside the domain, including a downlink scheduling signaling index DAI information bit or a part or all bits of a hybrid automatic repeat request HARQ information bit field, for indicating a PUCCH resource index. Or used to indicate PUCCH parameters.
  • the PUCCH parameter includes one or a combination of the following:
  • determining the PUCCH resource according to the resource indication information and the RMSI specifically, determining, according to the resource indication information and the RMSI, a physical resource block PRB index where the PUCCH resource is located.
  • the terminal can be made to determine the PRB index in which the PUCCH resource is located based on the DCI and the RMSI.
  • the set of resources indicated by the RMSI is determined by at least an indicated parameter cyclic shift CS interval or a minimum cyclic shift interval, and a PRB offset value;
  • the cyclic shift CS interval or the minimum cyclic shift interval indicated by the RMSI is used to determine a PUCCH resource number of each PRB bearer, and the RMSI indicates a PRB offset value for determining a starting position of the PRB.
  • the terminal can be made to determine the number of PUCCH resources per PRB bearer based on the cyclic shift CS interval or the minimum cyclic shift interval indicated by the RMSI; and determine the starting position of the PRB based on the PRB offset value indicated by the RMSI.
  • the DCI specifically indicates a resource index and frequency hopping information of the PUCCH; or the control channel unit CCE index of the DCI and the PDCCH jointly indicates a resource index and frequency hopping information of the PUCCH;
  • the PRB index of the PUCCH resource is determined according to the PUCCH resource index and the frequency hopping information, and the indication information of the RMSI.
  • the terminal can determine the PRB index of the PUCCH resource based on the PUCCH resource index and the frequency hopping information indicated by the DCI and the indication information of the RMSI.
  • a resource indication device provided by the embodiment of the present application includes:
  • a memory for storing program instructions
  • a processor configured to invoke a program instruction stored in the memory, and execute the resource indication method described by the network side according to the obtained program.
  • a resource determining apparatus provided by the embodiment of the present application includes:
  • a memory for storing program instructions
  • a processor configured to invoke a program instruction stored in the memory, and execute the resource determining method described by the terminal side according to the obtained program.
  • another resource indication device provided by the embodiment of the present application includes:
  • a determining unit configured to determine resource indication information used by the terminal to determine a physical uplink control channel PUCCH resource, where the resource indication information includes downlink control information DCI, where the DCI is used to determine a resource index in a PUCCH resource set;
  • the PUCCH resource set is indicated to the terminal by remaining minimum system information RMSI;
  • a sending unit configured to send the resource indication information to the terminal.
  • another resource determining apparatus provided by the embodiment of the present application includes:
  • An acquiring unit configured to acquire resource indication information that is sent by the network side to indicate that the terminal determines a physical uplink control channel PUCCH resource, where the resource indication information includes downlink control information DCI, where the DCI is used to determine a PUCCH resource set. Resource index; the PUCCH resource set is indicated to the terminal by the RMSI;
  • a determining unit configured to determine a PUCCH resource according to the resource indication information and the RMSI.
  • Another embodiment of the present application provides a computer storage medium storing computer executable instructions for causing the computer to execute any of the methods provided by the above self-application embodiment. .
  • FIG. 1 is a schematic flowchart of a resource indication method according to an embodiment of the present application
  • FIG. 2 is a schematic flowchart of a resource determining method according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of PUCCH resource mapping according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a resource indication apparatus according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a resource determining apparatus according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of another resource indication apparatus according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of another resource determining apparatus according to an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • UMTS Universal Mobile Telecommunication System
  • NR New Radio
  • the user equipment includes but is not limited to a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal), a mobile phone (Mobile Telephone), a mobile phone (handset). And portable devices, etc., the user equipment can communicate with one or more core networks via a Radio Access Network (RAN), for example, the user equipment can be a mobile phone (or "cellular"
  • RAN Radio Access Network
  • the user equipment can be a mobile phone (or "cellular"
  • the telephone device, the computer with wireless communication function, etc., the user equipment can also be a portable, portable, handheld, computer built-in or vehicle-mounted mobile device.
  • a base station may refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB) in TD-SCDMA or WCDMA, or may be an evolved base station (eNodeB or eNB or e- in LTE).
  • NodeB, evolutional Node B), or a base station (gNB) in 5G NR the present invention is not limited.
  • the embodiment of the present application provides a resource indication, a determining method, and a device, to implement a more flexible PUCCH resource indication and determination scheme.
  • the PUCCH resource allocation needs to consider two scenarios: the initial access phase and the Radio Resource Control (RRC) connection.
  • RRC Radio Resource Control
  • the RRC signaling is added to the two-level indication method of dynamic DCI signaling.
  • the RRC signaling is used to indicate a resource set
  • the DCI signaling is used to indicate a resource in the resource set.
  • Index resource index
  • the embodiment of the present application provides a method for combining the indication based on the system information RMSI and DCI to notify the UE in the initial access phase.
  • the PUCCH resource of message 4 can effectively and flexibly implement PUCCH resource indication by using this method.
  • the technical system of the 5G NR there may be two PUCCH resource indication methods, and one is an explicit indication method, that is, first, the RRC signaling is used to indicate an allocated resource set of the UE, and then the DCI is used to notify the UE of a specific resource.
  • the other method is an implicit resource indication mode, which is to use the LTE method to map to a specific PUCCH resource by using the index C of the corresponding smallest CCE of the PDCCH. Both methods have advantages and disadvantages, the explicit method is more flexible, and the implicit method can save signaling overhead.
  • the PUCCH resource set may be indicated by the RMSI information, and then the DCI and the implicit indication are combined to indicate a resource index in the resource set.
  • the PUCCH resource set includes 14 PUCCH resources, and uses a 3-bit plus 1-bit implicit indication to determine one PUCCH resource in the PUCCH resource set. If the minimum CCE index of the PDCCH is used for implicit indication, in order to distinguish 16 PUCCH resources, the CCE indexes of the two UEs may not be the same or the parity mapping of the CCE index may be the same, because the 3 bits can only distinguish 8 resource subsets. The CCE index must complete the resource indication in the last resource subset. For more flexible resource indication, a fully explicit 4-bit resource indication can be used as a more efficient implementation. The embodiment of the present application fully applies DCI to complete dynamic indication to avoid resource conflict and waste.
  • the embodiment of the present application provides a method for indicating PUCCH parameters or resources by relying on RMSI.
  • An example is given in Table 1 below.
  • the PUCCH set indicated by the RMSI contains 16 each of which corresponds to one configuration and a corresponding set of resources, each set containing 16 resources.
  • the PUCCH parameter in each set is determined by a corresponding parameter indication in a row, and may include one or a combination of the following: PUCCH format, PUCCH start symbol, PUCCH symbol number (length), PRB offset value (offset) , PUCCH minimum cyclic shift gap.
  • the minimum cyclic shift interval can be used to determine the number of resources carried by one PRB, because one PRB contains a total of 12 cyclic shift CSs. If the interval is 3, 4 resources can be multiplexed on one PRB.
  • the embodiment of the present application provides a PUCCH resource indication and determination method, which may be used for resource indication in an initial access phase.
  • the main principle is to use RMSI information to indicate a physical uplink control channel including 16 PUCCH resources. (Physical Uplink Control Channel, PUCCH) resource set, and then use 4 bits of Downlink Control Information (DCI) indication information to indicate a specific resource index in the resource set.
  • RMSI information Physical Uplink Control Channel, PUCCH
  • DCI Downlink Control Information
  • a single DCI information field may be used, or a plurality of DCI information fields may be used to jointly indicate a PUCCH resource in a resource set determined by Remaining Minimum System Information (RMSI). index.
  • RMSI Remaining Minimum System Information
  • the resource index of the PUCCH may be combined into a final resource index by the PUCCH resource indication field of the DCI and the 1-bit implicit information indication.
  • the 1-bit indication information is used to indicate a hopping pattern of the PUCCH, and each hopping pattern corresponds to 8 resource indexes, and is further indicated by a 3-bit DCI.
  • the bit recessive information is indicated by the minimum CCE index index of the PDCCH.
  • the recessive information bits may be in the upper bits of 4 bits or in the lower bits of 4 bits; the use of recessive information may separately use partial information of the PUCCH or may jointly indicate the PUCCH resource index.
  • the technical solution provided by the embodiment of the present application further includes a dominant indication method of the DCI indication.
  • a single 4-bit DCI information field may be used to indicate 16 PUCCH resources, and the DCI bit information and the PUCCH resource index are in one-to-one correspondence; this separate 4-bit information field may be a dedicated PUCCH information indication field or other information.
  • the information field shared by the domain.
  • a plurality of DCI information fields may be jointly used to indicate 16 PUCCH resource indexes, where the multiple DCI information fields include a 3-bit PUCCH dedicated information field and 1 bit of other information fields, or a combination of multiple other information fields.
  • Embodiment 1 The lower bits of 2-bit DAI information, or the upper 1 bit and the dedicated 3 bits are combined into 4-bit PUCCH resource indication information.
  • the information field of the Downlink Assignment Index (DAI) is not used for specific purposes, and thus can be used for PUCCH resource indication.
  • DAI Downlink Assignment Index
  • Embodiment 2 The 1-bit information of the DAI and the dedicated 3 bits are combined into 4-bit PUCCH resource indication information, and the other 1-bit DAI information is used to indicate the start position of the PUCCH. For example, when the time domain length of the PUCCH is 2 symbols, the DAI information of this bit is 1 for indicating that the PUCCH start symbol is 10, and the DAI information is 0 for indicating the PUCCH start symbol 12.
  • DAI DAI
  • the additional DAI bit may indicate whether to maintain the original start.
  • the symbol is 12, or is offset by 2 symbols.
  • the offset can be forward offset or backward bias. Move, you can pre-set according to actual needs.
  • the 1 bit has another use for indicating whether the location of the physical resource block (PRB) of the PUCCH is the PRB itself corresponding to the PUCCH resource indicated by 4 bits in the DCI, or based on the
  • the offset may be a low frequency offset or a high frequency offset, and may be preset according to actual needs.
  • Embodiment 3 Using 16 information fields to indicate 16 PUCCH resource indexes, and then using the remaining bits of the information field to indicate parameter information of the PUCCH, including one or a combination of the following: cyclic shift, orthogonal mask ( Cover code OCC) index, PUCCH start symbol, PUCCH format, etc.
  • the PUCCH resource set indicated by the RMSI includes more than 16 resources, more DCI information bits are needed to indicate the PUCCH resource index. For example, when a resource set contains 32 resources, 5 bits are needed. At this time, a 3-bit PUCCH dedicated information field and 2-bit DAI information bits constitute a 5-bit indication field; if a resource set contains 64 resources, 6 bits are required. In this case, a 3-bit PUCCH dedicated information field and a 3-bit HARQ information bit form a 6-bit indication field.
  • Hybrid Automatic Repeat Request (HARQ) is used to indicate the retransmission process.
  • the indication field of the information at which time an indication for the PUCCH is borrowed.
  • the technical solution provided by the embodiment of the present application includes a corresponding method of a PUCCH resource index and an OCC index.
  • the PUCCH fomat is format 1, and a PRB can be shifted by 6 cycles ⁇ 0, 2, 4, 6, 8, 10 ⁇ .
  • Different PUCCH lengths may use different OCCs.
  • the OCC length may be 2 or 3 due to frequency hopping, and the OCC length may be 4 or 3 when the number of symbols is 14.
  • the generation of orthogonal sequences is shown in Table 2 below.
  • NSF represents the OCC spread length
  • m represents the OCC sequence bit index.
  • i represents the OCC orthogonal mask index.
  • Table 2 Indicates the spread length.
  • the minimum OCC length of the reference signal and data of the PUCCH is 2, as shown in Table 2 above, there are two OCC codes, and in order to minimize interference between users, it is necessary to make neighbors
  • the CS index corresponds to a different OCC. For example, ⁇ 0, 4, 8 ⁇ corresponds to the OCC code 1, and ⁇ 2, 6, 10 ⁇ corresponds to the OCC code 2, so that the OCCs of two adjacent CSs are orthogonal, Maximize the suppression of interference between users.
  • a resource indication method provided by an embodiment of the present application includes:
  • the resource indication information used by the terminal to determine the physical uplink control channel PUCCH resource where the resource indication information includes downlink control information DCI, where the DCI is used to determine a resource index in the PUCCH resource set;
  • the set of PUCCH resources is indicated to the terminal by the remaining minimum system information RMSI; the resource indication information is sent to the terminal, so that the PUCCH resource set can be indicated by the RMSI, and the resource index in the PUCCH resource set can be dynamically indicated by the DCI.
  • RMSI remaining minimum system information
  • a more flexible PUCCH resource indication scheme is implemented to avoid resource conflicts and waste.
  • the method before the sending the resource indication information to the terminal, the method further includes:
  • the PUCCH resource set can be indicated to the terminal by the RMSI.
  • the PUCCH resource set may be pre-agreed in the embodiment of the present application, and the network side does not need to indicate the PUCCH resource set to the terminal by using the RMSI, or only when the PUCCH resource set needs to be updated, the latest PUCCH resource set is indicated by the RMSI. terminal.
  • the resource indication information further includes implicit information.
  • the implicit information described in the embodiment of the present application may be used together with the DCI for the indication of the PUCCH resource index, and may also be used for the indication of other information related to the PUCCH resource, so that the application of the resource indication information is flexible. To achieve flexible and variable resource indications.
  • the DCI and the implicit information occupy a 4-bit information field, wherein the recessive information occupies a 1-bit information field.
  • the number of bits occupied by the DCI and the implicit information may be set according to actual needs, and the number of bits occupied by the implicit information.
  • the implicit information is indicated by a minimum control channel element CCE index of the PDCCH.
  • the CCECH resource related information can be indicated using the CCE index.
  • the implicit information is at a high level of 4 bits, or at a low level of 4 bits. That is, the 1-bit recessive information may be located in a higher bit of the 4-bit information field occupied by the DCI, or a lower bit, for example, the 1-bit recessive information is located in the first bit or the last bit of the 4-bit information field. Bit.
  • the specific location can be pre-agreed according to actual needs.
  • the implicit information separately indicates frequency hopping or cyclic shift information of the PUCCH. Therefore, the frequency hopping or cyclic shift information of the PUCCH can be separately indicated by the recessive information in the DCI, so that the indication of the PUCCH resource related information is more flexible and diverse.
  • each resource index of the PUCCH corresponds to a cyclic shift CS index, where multiple orthogonal mask OCCs are configured in the same PRB, and multiple cyclic shift indexes correspond to the same orthogonal mask.
  • the adjacent cyclic shift index corresponds to a different orthogonal mask OCC.
  • ⁇ 0, 4, 8 ⁇ corresponds to the OCC code 1
  • ⁇ 2, 6, 10 ⁇ corresponds to the OCC code 2 so that the OCCs of two adjacent CSs are orthogonal, which can maximize the suppression of interference between users. .
  • the PUCCH resource set includes at least 16 PUCCH resources, and the DCI occupies at least 4 bit information fields.
  • the PUCCH resource set may further include other numbers of PUCCH resources, and correspondingly, the DCI may also occupy other information fields of the number of bits.
  • the DCI indicates the domain indication only through dedicated PUCCH information
  • the DCI is jointly formed by a dedicated PUCCH information indication field and an information domain other than the dedicated PUCCH information indication domain.
  • the DCI may not only indicate the domain indication through the dedicated PUCCH information, but also may jointly indicate by the dedicated PUCCH information indication domain and the information domain other than the dedicated PUCCH information indication domain, that is, the DCI
  • the indication method is very flexible and can be determined according to actual needs.
  • the dedicated PUCCH information indicates an information field outside the domain, including a downlink scheduling signaling index DAI information bit or a part or all bits of a hybrid automatic repeat request HARQ information bit field, for indicating a PUCCH resource index. Or used to indicate PUCCH parameters.
  • the PUCCH resource index or the PUCCH parameter can be indicated by a partial or all bits of the DAI information bit or hybrid automatic repeat request in the HARQ information bit field.
  • the dedicated PUCCH information indicates an information field outside the domain, including a downlink scheduling signaling index DAI information bit, used to indicate a PUCCH parameter.
  • the PUCCH parameters can be indicated by the DAI information bits.
  • the PUCCH parameter includes one or a combination of the following:
  • the information content of the PUCCH start symbol, the index of the PUCCH physical resource block PRB, whether the offset is based on the specified PUCCH start symbol, whether the offset is based on the specified physical resource block PRB index, or the like may be indicated by the DAI information bit.
  • the set of resources indicated by the RMSI is determined by at least an indicated parameter cyclic shift CS interval or a minimum cyclic shift interval, and a PRB offset value;
  • the cyclic shift CS interval or the minimum cyclic shift interval indicated by the RMSI is used to determine a PUCCH resource number of each PRB bearer, and the RMSI indicates a PRB offset value for determining a starting position of the PRB.
  • a resource determining method provided by an embodiment of the present application includes:
  • the resource indication information that is sent by the network side to indicate that the terminal determines the physical uplink control channel PUCCH resource is obtained by the method, where the resource indication information includes downlink control information DCI, where the DCI is used to determine the PUCCH resource set. a resource index; the PUCCH resource set is indicated to the terminal by the RMSI; the PUCCH resource is determined according to the resource indication information and the RMSI, and therefore, the PUCCH resource set is determined by the RMSI, and the resource in the PUCCH resource set is determined by the DCI, That is, the PUCCH resources can be determined more flexibly through DCI and RMSI.
  • the method before acquiring the resource indication information sent by the network side, the method further includes:
  • a PUCCH resource set can be determined.
  • the PUCCH resource set may be pre-agreed, and the RMSI sent by the network side may not be acquired, or the RMSI sent by the network side may be acquired only when the PUCCH resource set is updated, and the latest PUCCH is determined by the RMSI. Resource collection.
  • the resource indication information further includes implicit information.
  • the DCI and the implicit information occupy a 4-bit information field, wherein the recessive information occupies a 1-bit information field.
  • the implicit information is indicated by a minimum control channel element CCE index of the PDCCH.
  • the implicit information is at a high level of 4 bits, or at a low level of 4 bits.
  • the implicit information separately indicates frequency hopping or cyclic shift information of the PUCCH.
  • each resource index of the PUCCH corresponds to a cyclic shift CS index, where multiple orthogonal mask OCCs are configured in the same PRB, and multiple cyclic shift indexes correspond to the same orthogonal mask.
  • the adjacent cyclic shift index corresponds to a different orthogonal mask OCC.
  • the PUCCH resource set includes at least 16 PUCCH resources, and the DCI occupies at least 4 bit information fields.
  • the DCI indicated by the network side is obtained only by using a dedicated PUCCH information indication domain
  • the DCI indicated by the network side is obtained by using a dedicated PUCCH information indication domain and an information domain other than the dedicated PUCCH information indication domain.
  • the dedicated PUCCH information indicates an information field outside the domain, including a downlink scheduling signaling index DAI information bit or a part or all bits of a hybrid automatic repeat request HARQ information bit field, for indicating a PUCCH resource index. Or used to indicate PUCCH parameters.
  • the PUCCH parameter includes one or a combination of the following:
  • determining the PUCCH resource according to the resource indication information and the RMSI specifically, determining, according to the resource indication information and the RMSI, a physical resource block PRB index where the PUCCH resource is located.
  • the terminal can be made to determine the PRB index in which the PUCCH resource is located based on the DCI and the RMSI.
  • the RMSI indicates a cyclic shift CS interval or a minimum cyclic shift interval, and a PRB offset value;
  • the cyclic shift CS interval or the minimum cyclic shift interval indicated by the RMSI is used to determine a PUCCH resource number of each PRB bearer, and the RMSI indicates a PRB offset value for determining a starting position of the PRB.
  • the terminal can be made to determine the number of PUCCH resources per PRB bearer based on the cyclic shift CS interval or the minimum cyclic shift interval indicated by the RMSI; and determine the starting position of the PRB based on the PRB offset value indicated by the RMSI.
  • the DCI specifically indicates a resource index and frequency hopping information of the PUCCH; or the control channel unit CCE index of the DCI and the PDCCH jointly indicates a resource index and frequency hopping information of the PUCCH;
  • the PRB index of the PUCCH resource is determined according to the PUCCH resource index and the frequency hopping information, and the indication information of the RMSI.
  • the terminal can determine the PRB index of the PUCCH resource based on the PUCCH resource index and the frequency hopping information indicated by the DCI and the indication information of the RMSI.
  • the embodiment of the present application further provides an embodiment to implement a method for determining a PRB resource index of a PUCCH, which is specifically introduced as follows:
  • the cyclic shift CS interval or the minimum cyclic shift interval indicated by the RMSI determines the number of PUCCH resources carried by one PRB, and the PRB offset offset value indicated by the RMSI determines the starting position of the PRB;
  • the DCI indicates a resource index and frequency hopping information of the PUCCH, or jointly indicates a resource index and frequency hopping information of the PUCCH by using a DCI indication and a CCE index of the PDCCH.
  • the terminal may determine the PRB index of the PUCCH resource according to the obtained PUCCH resource index and the frequency hopping information and the indication information of the RMSI.
  • the terminal first obtains a set indication information of 16 resources according to the RMSI, and then determines a resource index and frequency hopping information of the PUCCH according to the information of the DCI or the DCI and the recessive indication CCE index, and of course, the frequency hopping information may also be A part of the resource index, such as a total of 16 PUCCH resources, of which 8 PUCCH resources are subject to the frequency hopping pattern 1, and the other 8 PUCCH resources are subject to the frequency hopping pattern 2.
  • Number of PUCCH resources that a PRB can carry It is determined by the minimum cyclic shift interval that after the terminal obtains the information of the resource index n PUCCH of the PUCCH , the terminal may derive an intermediate value of the PRB index according to the following formula:
  • the above formula is a mathematical operation that takes the bounds off.
  • PRB_offset is indicated by the RMSI information, indicating the PRB offset value of the relative band boundary. Therefore, the index n PRB of the PRB is derived by the following formula:
  • BWP BandWidth Part
  • f frequency
  • t time
  • the same filling pattern represents a physical mapping of a resource, for example, when the minimum cyclic shift interval
  • a resource indication apparatus provided by the embodiment of the present application includes:
  • a memory 520 configured to store program instructions
  • the processor 500 is configured to invoke a program instruction stored in the memory, and execute according to the obtained program:
  • Determining resource indication information for instructing the terminal to determine a physical uplink control channel PUCCH resource where the resource indication information includes downlink control information DCI, where the DCI is used to determine a resource index in a PUCCH resource set; the PUCCH resource set Indicated to the terminal by the remaining minimum system information RMSI;
  • the resource indication information is sent to the terminal by the transceiver 510.
  • processor 500 is further configured to:
  • the RMSI is transmitted to the terminal by the transceiver 510 before transmitting the resource indication information to the terminal through the transceiver 510.
  • the resource indication information further includes implicit information.
  • the implicit information in the embodiment of the present application may be different from the DCI, that is, not belonging to the DCI, and may be used together with the DCI for the indication of the PUCCH resource index, and may also be used for the indication of other information related to the PUCCH resource, so that The application of the resource indication information is flexible, and the resource indication is flexible and variable.
  • the DCI and the implicit information occupy a 4-bit information field, wherein the recessive information occupies a 1-bit information field.
  • the number of bits occupied by the DCI and the implicit information may be set according to actual needs, and the number of bits occupied by the implicit information.
  • the implicit information is indicated by a minimum control channel element CCE index of the PDCCH.
  • the CCECH resource related information can be indicated using the CCE index.
  • the implicit information is at a high level of 4 bits, or at a low level of 4 bits. That is, the 1-bit recessive information may be located in a higher bit of the 4-bit information field occupied by the DCI, or a lower bit, for example, the 1-bit recessive information is located in the first bit or the last bit of the 4-bit information field. Bit.
  • the specific location can be pre-agreed according to actual needs.
  • the implicit information separately indicates frequency hopping or cyclic shift information of the PUCCH. Therefore, the frequency hopping or cyclic shift information of the PUCCH can be separately indicated by the recessive information in the DCI, so that the indication of the PUCCH resource related information is more flexible and diverse.
  • each resource index of the PUCCH corresponds to a cyclic shift CS index, where multiple orthogonal mask OCCs are configured in the same PRB, and multiple cyclic shift indexes correspond to the same orthogonal mask.
  • the adjacent cyclic shift index corresponds to a different orthogonal mask OCC.
  • ⁇ 0, 4, 8 ⁇ corresponds to the OCC code 1
  • ⁇ 2, 6, 10 ⁇ corresponds to the OCC code 2 so that the OCCs of two adjacent CSs are orthogonal, which can maximize the suppression of interference between users. .
  • the PUCCH resource set includes at least 16 PUCCH resources, and the DCI occupies at least 4 bit information fields.
  • the PUCCH resource set may further include other numbers of PUCCH resources, and correspondingly, the DCI may also occupy other information fields of the number of bits.
  • the DCI indicates the domain indication only through dedicated PUCCH information
  • the DCI is jointly formed by a dedicated PUCCH information indication field and an information domain other than the dedicated PUCCH information indication domain.
  • the DCI may not only indicate the domain indication through the dedicated PUCCH information, but also may jointly indicate by the dedicated PUCCH information indication domain and the information domain other than the dedicated PUCCH information indication domain, that is, the DCI
  • the indication method is very flexible and can be determined according to actual needs.
  • the dedicated PUCCH information indicates an information field outside the domain, including a downlink scheduling signaling index DAI information bit or a part or all bits of a hybrid automatic repeat request HARQ information bit field, for indicating a PUCCH resource index. Or used to indicate PUCCH parameters.
  • the PUCCH resource index or the PUCCH parameter may be indicated by some or all of the bits in the HARQ information bit field through DAI information bits or hybrid automatic repeat request.
  • the dedicated PUCCH information indicates an information field outside the domain, including a downlink scheduling signaling index DAI information bit, used to indicate a PUCCH parameter.
  • the PUCCH parameters can be indicated by the DAI information bits.
  • the PUCCH parameter includes one or a combination of the following:
  • the information content of the PUCCH start symbol, the index of the PUCCH physical resource block PRB, whether the offset is based on the specified PUCCH start symbol, whether the offset is based on the specified physical resource block PRB index, or the like may be indicated by the DAI information bit.
  • the set of resources indicated by the RMSI is determined by at least an indicated parameter cyclic shift CS interval or a minimum cyclic shift interval, and a PRB offset value;
  • the cyclic shift CS interval or the minimum cyclic shift interval indicated by the RMSI is used to determine a PUCCH resource number of each PRB bearer, and the RMSI indicates a PRB offset value for determining a starting position of the PRB.
  • the transceiver 510 is configured to receive and transmit data under the control of the processor 500.
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 500 and various circuits of memory represented by memory 520.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 510 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 500 when performing operations.
  • the processor 500 can be a central buried device (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (Complex Programmable Logic Device). , CPLD).
  • CPU central buried device
  • ASIC application specific integrated circuit
  • FPGA field-programmable gate array
  • CPLD complex programmable logic device
  • a resource determining apparatus provided by an embodiment of the present application includes:
  • a memory 620 configured to store program instructions
  • the processor 600 is configured to invoke a program instruction stored in the memory, and execute according to the obtained program:
  • resource indication information that is sent by the network side to indicate that the terminal determines a physical uplink control channel PUCCH resource, where the resource indication information includes downlink control information DCI, where the DCI is used to determine a resource index in a PUCCH resource set;
  • the set of PUCCH resources is indicated to the terminal by the RMSI;
  • a PUCCH resource is determined according to the resource indication information and the RMSI.
  • the processor 600 is further configured to: acquire, by the transceiver 610, the RMSI sent by the network side before acquiring the downlink control information DCI sent by the network side by the transceiver 610.
  • a PUCCH resource set can be determined.
  • the PUCCH resource set may be pre-agreed, and the RMSI sent by the network side may not be acquired, or the RMSI sent by the network side may be acquired only when the PUCCH resource set is updated, and the latest PUCCH is determined by the RMSI. Resource collection.
  • the resource indication information further includes implicit information.
  • the DCI and the implicit information occupy a 4-bit information field, wherein the recessive information occupies a 1-bit information field.
  • the implicit information is indicated by a minimum control channel element CCE index of the PDCCH.
  • the implicit information is at a high level of 4 bits, or at a low level of 4 bits.
  • the implicit information separately indicates frequency hopping or cyclic shift information of the PUCCH.
  • each resource index of the PUCCH corresponds to a cyclic shift CS index, where multiple orthogonal mask OCCs are configured in the same PRB, and multiple cyclic shift indexes correspond to the same orthogonal mask.
  • the adjacent cyclic shift index corresponds to a different orthogonal mask OCC.
  • the PUCCH resource set includes at least 16 PUCCH resources, and the DCI occupies at least 4 bit information fields.
  • the processor 600 may obtain the DCI indicated by the network side only by using a dedicated PUCCH information indication domain;
  • the processor 600 may obtain the DCI indicated by the network side by using a dedicated PUCCH information indication domain and an information domain other than the dedicated PUCCH information indication domain.
  • the dedicated PUCCH information indicates an information field outside the domain, including a downlink scheduling signaling index DAI information bit or a part or all bits of a hybrid automatic repeat request HARQ information bit field, for indicating a PUCCH resource index. Or used to indicate PUCCH parameters.
  • the PUCCH parameter includes one or a combination of the following:
  • determining the PUCCH resource according to the resource indication information and the RMSI specifically, determining, according to the resource indication information and the RMSI, a physical resource block PRB index where the PUCCH resource is located.
  • the terminal can be made to determine the PRB index in which the PUCCH resource is located based on the DCI and the RMSI.
  • the set of resources indicated by the RMSI is determined by at least an indicated parameter cyclic shift CS interval or a minimum cyclic shift interval, and a PRB offset value;
  • the cyclic shift CS interval or the minimum cyclic shift interval indicated by the RMSI is used to determine a PUCCH resource number of each PRB bearer, and the RMSI indicates a PRB offset value for determining a starting position of the PRB.
  • the terminal can be made to determine the number of PUCCH resources per PRB bearer based on the cyclic shift CS interval or the minimum cyclic shift interval indicated by the RMSI; and determine the starting position of the PRB based on the PRB offset value indicated by the RMSI.
  • the DCI specifically indicates a resource index and frequency hopping information of the PUCCH; or the control channel unit CCE index of the DCI and the PDCCH jointly indicates a resource index and frequency hopping information of the PUCCH;
  • the PRB index of the PUCCH resource is determined according to the PUCCH resource index and the frequency hopping information, and the indication information of the RMSI.
  • the terminal can determine the PRB index of the PUCCH resource based on the PUCCH resource index and the frequency hopping information indicated by the DCI and the indication information of the RMSI.
  • the transceiver 610 is configured to receive and transmit data under the control of the processor 600.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 600 and various circuits of memory represented by memory 620.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 610 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 630 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 can store data used by the processor 600 in performing operations.
  • the processor 600 can be a central buried device (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device ( Complex Programmable Logic Device,) CPLD.
  • CPU central buried device
  • ASIC application specific integrated circuit
  • FPGA field-programmable gate array
  • CPLD complex programmable logic device
  • another resource indication apparatus provided by the embodiment of the present application includes:
  • the determining unit 11 is configured to determine resource indication information used by the terminal to determine a physical uplink control channel PUCCH resource, where the resource indication information includes downlink control information DCI, where the DCI is used to determine a resource index in the PUCCH resource set
  • the PUCCH resource set is indicated to the terminal by the remaining minimum system information RMSI;
  • the sending unit 12 is configured to send the resource indication information to the terminal.
  • another resource determining apparatus provided by the embodiment of the present application includes:
  • the acquiring unit 21 is configured to acquire resource indication information that is sent by the network side to instruct the terminal to determine a physical uplink control channel PUCCH resource, where the resource indication information includes downlink control information DCI, where the DCI is used to determine a PUCCH resource set. a resource index in the UE; the PUCCH resource set is indicated to the terminal by the RMSI;
  • the determining unit 22 is configured to determine a PUCCH resource according to the resource indication information and the RMSI.
  • the above determining unit 11, the transmitting unit 12, the obtaining unit 21, and the determining unit 22 can all be implemented by a physical device such as a processor.
  • the embodiment of the present application provides a computer storage medium for storing the computer program instructions used by the apparatus provided in the foregoing application, which includes any method provided by the foregoing embodiment of the present application (which may be a network side). Either method can also be a program of any method on the terminal side.
  • the computer storage medium can be any available media or data storage device accessible by a computer, including but not limited to magnetic storage (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (eg, CD, DVD, BD, HVD, etc.), and semiconductor memories (for example, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state hard disk (SSD)).
  • magnetic storage eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.
  • optical storage eg, CD, DVD, BD, HVD, etc.
  • semiconductor memories for example, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state hard disk (SSD)).
  • the method provided by the embodiment of the present application can be applied to a terminal device, and can also be applied to a network device.
  • the terminal device may also be referred to as a user equipment (User Equipment, referred to as "UE"), a mobile station (Mobile Station, referred to as "MS”), a mobile terminal (Mobile Terminal), etc.
  • UE User Equipment
  • MS Mobile Station
  • Mobile Terminal Mobile Terminal
  • the terminal may The ability to communicate with one or more core networks via a Radio Access Network (RAN), for example, the terminal can be a mobile phone (or “cellular” phone), or a computer with mobile nature, etc.
  • RAN Radio Access Network
  • the terminal can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device.
  • a network device may be a base station (e.g., an access point) that refers to a device in the access network that communicates with the wireless terminal over one or more sectors over the air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), or it may be gNB in a 5G system.
  • BTS Base Transceiver Station
  • NodeB base station
  • NodeB evolved base station in LTE
  • eNB evolved base station
  • e-NodeB evolutional Node B
  • the information field of the DCI may be combined into 4 bits for displaying a specific resource index in the resource set specified by the RMSI; and the resource index indicating the PUCCH is performed by using the two-bit information of the DAI.
  • Other parameter information the embodiment of the present application can provide flexible DCI information indicating that the PUCCH resource index does not add DCI overhead.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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

Abstract

L'invention concerne des procédés et des appareils d'indication et de détermination de ressources, qui sont utilisés pour permettre une indication de ressources PUCCH et des schémas de détermination plus souples. Un procédé d'indication de ressource proposé par la présente invention consiste : à déterminer des informations d'indication de ressources pour ordonner à un terminal de déterminer une ressource de commande de canal de liaison montante physique (PUCCH), les informations d'indication de ressources comprenant des informations de commande de liaison descendante (DCI), et les DCI étant utilisées pour déterminer un indice de ressource dans un ensemble de ressources PUCCH ; à indiquer l'ensemble de ressources PUCCH à un terminal au moyen d'informations de système minimum restantes (RMSI) ; à envoyer les informations d'indication de ressources au terminal.
PCT/CN2018/124041 2018-03-28 2018-12-26 Procédés et appareils d'indication et de détermination de ressources WO2019184484A1 (fr)

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