WO2019154185A1 - 下行控制信息dci的传输方法、装置及网络设备 - Google Patents

下行控制信息dci的传输方法、装置及网络设备 Download PDF

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Publication number
WO2019154185A1
WO2019154185A1 PCT/CN2019/073671 CN2019073671W WO2019154185A1 WO 2019154185 A1 WO2019154185 A1 WO 2019154185A1 CN 2019073671 W CN2019073671 W CN 2019073671W WO 2019154185 A1 WO2019154185 A1 WO 2019154185A1
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domain
time domain
indication
dci
configuration
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PCT/CN2019/073671
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English (en)
French (fr)
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彭淑燕
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维沃移动通信有限公司
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Priority to EP19750603.3A priority Critical patent/EP3755089B1/en
Priority to KR1020207024303A priority patent/KR102445177B1/ko
Priority to ES19750603T priority patent/ES2930950T3/es
Priority to US16/969,227 priority patent/US11464019B2/en
Priority to JP2020564997A priority patent/JP7221990B2/ja
Publication of WO2019154185A1 publication Critical patent/WO2019154185A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/53Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H04L1/0004Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes applied to control information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H04L1/1819Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/2605Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446Resources in time domain, e.g. slots or frames
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • H04L5/0092Indication of how the channel is divided

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a method, an apparatus, and a network device for transmitting downlink control information DCI.
  • broadcast information can be divided into a master information block (MIB), remaining minimum system information (RMSI), and other system information (OSI). ) and paging information;
  • MIB master information block
  • RMSI remaining minimum system information
  • OSI system information
  • the MIB is transmitted in a physical broadcast channel (PBCH);
  • PBCH physical broadcast channel
  • the RMSI and the OSI are transmitted in a physical downlink shared channel (PDSCH) and are scheduled by a corresponding physical downlink control channel (PDCCH).
  • the paging information can be classified into two types: one in the PDCCH (The physical downlink control channel directly indicates that one type of paging information is transmitted for the PDCCH (Physical Downlink Control Channel) scheduling PDSCH (Physical Downlink Shared Channel).
  • the MIB, RMSI, OSI, and paging are all broadcast information, and the coverage of the cell is the intersection of the coverage of the MIB, SI, paging, and SI/paging PDCCH.
  • the PBCH uses QPSK coding.
  • DCI format 1_0 downlink fallback DCI
  • DCI format 1_0 downlink fallback DCI
  • the load of DCI format 1_0 is about 64 bits, and the aggregation level (AL) of PDCCH can be 4, 8, and 16. Under different aggregation levels, the number of DMRS symbols is reduced by 1/4.
  • the number of available REs is as follows. :
  • a Control Channel Element contains 6 RE groups (REG), and one REG is 12 REs;
  • the frequency domain resources of the RMSI control resource set are 24 RBs, 48 RBs, and 96 RBs; wherein RB is a resource block;
  • RMSI CORESET configures the initial BWP (initial BWP) bandwidth equal to the bandwidth of the RMSI CORESET.
  • the initial bandwidth part is 24 RBs, 48 RBs, and 96 RBs according to the configuration. If it is a mini-slot scheduling, the number of symbols that can be occupied is 2/4/7 OFDM symbols, and SI/paging With single-port transmission and configuration type 2 using Demodulation Reference Signal (DMRS), the DMRS occupies 1/3 of the RE resources of the first OFDM symbol.
  • the available resources are as follows:
  • the code rate is too large when the aggregation level is 4 or 8, (the MIB code rate is 0.065 compared to MIB), and the PDCCH may not reach the coverage of the MIB.
  • SI and paging are fixed using QPSK modulation.
  • the DCI format 0_0/1_0 is used to schedule data in the Ultra Reliable & Low Latency Communication (URLLC), and the code rate is high, resulting in a small PDCCH coverage.
  • URLLC Ultra Reliable & Low Latency Communication
  • the embodiments of the present disclosure provide a method, an apparatus, and a network device for transmitting downlink control information DCI, to solve the problem that the PDCCH code rate is high and the coverage is insufficient when DCI transmission is related in the related art.
  • an embodiment of the present disclosure provides a method for transmitting downlink control information DCI, which is applied to a network device, and includes:
  • Determining a DCI format for transmitting downlink control information DCI includes: a time domain resource allocation domain, an aggregated transmission indication domain, a first indication domain, or a second indication domain, where the first indication domain indicates a time domain resource a configuration value of the configuration value and the modulation order, the second indication field indicating a configuration value of the time domain resource and a configuration value of the aggregate transmission indication;
  • the DCI is transmitted according to the DCI format.
  • the embodiment of the present disclosure further provides a transmission apparatus for downlink control information DCI, which is applied to a network device, and includes:
  • a processing module configured to determine a DCI format for transmitting downlink control information DCI, where the DCI format includes: a time domain resource allocation domain, an aggregated transmission indication domain, a first indication domain, or a second indication domain, where the first indicator domain And a configuration value indicating a configuration value of the time domain resource and a configuration value of the modulation order, where the second indication field indicates a configuration value of the time domain resource and a configuration value of the aggregation transmission indication;
  • transceiver module configured to transmit the DCI according to the DCI format.
  • an embodiment of the present disclosure provides a network device, including:
  • a processor configured to determine a DCI format for transmitting downlink control information DCI, where the DCI format includes: a time domain resource allocation domain, an aggregated transmission indication domain, a first indication domain, or a second indication domain, where the first indicator domain And a configuration value indicating a configuration value of the time domain resource and a configuration value of the modulation order, where the second indication field indicates a configuration value of the time domain resource and a configuration value of the aggregation transmission indication;
  • a transceiver configured to transmit the DCI according to the DCI format.
  • an embodiment of the present disclosure provides a network device, where the network device includes a processor, a memory, and a computer program stored on the memory and executable on the processor, where the processor executes The steps of the transmission method of the downlink control information DCI as described above are implemented in the case of the computer program.
  • an embodiment of the present disclosure provides a computer readable storage medium, where the computer readable storage medium stores a computer program, and when the computer program is executed by the processor, implements downlink control information DCI as described above. The steps of the transfer method.
  • the method for transmitting downlink control information DCI of the embodiment of the present disclosure determines a DCI format for transmitting downlink control information DCI, where the DCI format includes: a time domain resource allocation domain, an aggregated transmission indication domain, a first indication domain, or a a second indication field, where the first indication field indicates a configuration value of a time domain resource and a configuration value of a modulation order, and the second indication field indicates a configuration value of the time domain resource and a configuration value of the aggregation transmission indication;
  • the DCI is transmitted; thus, the DCI configured with a smaller load is implemented, and in a limited resource configuration, the code rate of the PDCCH is reduced, and the coverage of the PDCCH is improved.
  • FIG. 1 shows a first flowchart of a method of transmitting a DCI of an embodiment of the present disclosure
  • FIG. 2 is a second flowchart showing a method of transmitting a DCI of an embodiment of the present disclosure
  • FIG. 3 is a third flowchart showing a method of transmitting a DCI of an embodiment of the present disclosure
  • FIG. 4 shows a first exemplary diagram of a time domain location of a time domain resource allocation when CORESET, RMSI, and SSB are transmitted together in an embodiment of the present disclosure
  • FIG. 5 is a second exemplary diagram showing a time domain location of a time domain resource allocation when CORESET, RMSI, and SSB are transmitted together in an embodiment of the present disclosure
  • FIG. 6 is a third exemplary diagram showing a time domain location of a time domain resource allocation when CORESET, RMSI, and SSB are transmitted together in an embodiment of the present disclosure
  • FIG. 7 is a schematic diagram showing the time domain location of the time domain resource allocation when the RMSI and CORESET control resource sets are retransmitted after the SSB synchronization information block is sent, in the embodiment of the present disclosure
  • FIG. 8 is a fourth flowchart showing a transmission method of an embodiment DCI of the present disclosure.
  • FIG. 9 is a diagram showing an example of a symbol shift of a PDSCH with respect to CORESET in an embodiment of the present disclosure.
  • Figure 10 shows a first exemplary diagram of an interval between aggregated transmissions in an embodiment of the present disclosure
  • Figure 11 shows a second exemplary diagram of the interval between aggregated transmissions in an embodiment of the present disclosure
  • FIG. 12 is a fourth flowchart showing a method of transmitting DCI according to an embodiment of the present disclosure.
  • FIG. 13 is a block diagram showing a module of a transmission apparatus of a DCI according to an embodiment of the present disclosure
  • Figure 14 shows a block diagram of a network device of an embodiment of the present disclosure.
  • a method for transmitting downlink control information DCI in an embodiment of the present disclosure is applied to a network device, including:
  • Step 11 Determine a DCI format for transmitting downlink control information DCI, where the DCI format includes: a time domain resource allocation domain, an aggregated transmission indication domain, a first indication domain, or a second indication domain, where the first indication domain indicates a configuration value of the domain resource and a configuration value of the modulation order, where the second indication field indicates a configuration value of the time domain resource and a configuration value of the aggregation transmission indication;
  • Step 12 Transmit the DCI according to the DCI format.
  • the method for transmitting the downlink control information DCI of the embodiment of the present disclosure determines a DCI format for transmitting downlink control information DCI, where the DCI format includes: a time domain resource allocation domain, an aggregated transmission indication domain, a first indication domain, or a second indication a first indicator field indicating a configuration value of a time domain resource and a configuration value of a modulation order, the second indication field indicating a configuration value of the time domain resource and a configuration value of the aggregate transmission indication; and according to the DCI format
  • the DCI is transmitted; thus, the DCI configured with a smaller load is implemented, and in a limited resource configuration, the code rate of the PDCCH is reduced, and the coverage of the PDCCH is improved.
  • the method for transmitting downlink control information DCI in the embodiment of the present disclosure is applied to a network device, including:
  • Step 21 Determine a DCI format for transmitting downlink control information (DCI), where the DCI format includes: a first indication field, where the first indication field indicates a configuration value of a time domain resource and a configuration value of a modulation order, and the first indication
  • the configuration value of the time domain resource indicated by the domain includes: the number of OFDM symbols indicated by the time domain resource domain; the configuration value of the modulation order indicated by the first indication domain includes: determined according to the number of OFDM symbols indicated by the time domain resource domain The modulation order.
  • Step 22 Transmit the DCI according to the DCI format.
  • the modulation order determined according to the number of OFDM symbols indicated by the time domain resource domain is a first type coding mode, where n is the number of OFDM symbols indicated by the time domain resource allocation indication.
  • N ⁇ K, N, K are configured values or pre-configured fixed values.
  • the first type of coding method herein may be one of 16QAM, 64QAM, and QPSK, and is of course not limited to these coding modes.
  • the modulation order determined according to the number of OFDM symbols indicated by the time domain resource domain is a second type coding mode, where n is indicated by the time domain resource allocation field.
  • the number of OFDM symbols, and M ⁇ N, N, M are configured values or pre-configured fixed values.
  • the second type of coding method herein may be one of 16QAM, 64QAM, and QPSK, and is of course not limited to these coding modes.
  • the modulation order determined according to the number of OFDM symbols indicated by the time domain resource domain is a third type coding mode, where n is an OFDM symbol indicated by the time domain resource allocation field.
  • Number, M is the configured value or a pre-configured fixed value.
  • the third type of coding method herein may be one of 16QAM, 64QAM, and QPSK, and is of course not limited to these coding modes.
  • the modulation order determined according to the number of OFDM symbols indicated by the time domain resource domain is a fourth type coding mode, where n is an OFDM symbol indicated by the time domain resource allocation field.
  • the number, L is the configured value or a pre-configured fixed value.
  • the fourth type of coding method herein may be one of 16QAM, 64QAM, and QPSK, and is of course not limited to these coding modes.
  • the number of symbols allocated by the time domain resource is n OFDM symbols, and when K ⁇ n ⁇ N (N ⁇ K), 64 Quadrature Amplitude Modulation (QAM) is fixed, when N ⁇ n When ⁇ M(M ⁇ N), 16QAM is fixed.
  • QPSK Quadrature Phase Shift Keying
  • n 2 64QAM 2 ⁇ n ⁇ 4 16QAM n>4 QPSK
  • P1 and P2 are configured values, as shown in Table 3 below:
  • the number of symbols allocated by the time domain resource is n OFDM symbols, when 2 ⁇ n ⁇ 4, 16QAM is fixed, and when n>4, QPSK coding is used, as shown in Table 4:
  • the method for transmitting downlink control information DCI in the embodiment of the present disclosure is applied to a network device, including:
  • Step 31 Determine a DCI format for transmitting downlink control information DCI, where the DCI format includes: a flag field, a first indication domain (specifically, a time domain resource allocation and a modulation scheme domain), a frequency domain resource allocation domain, and a hybrid automatic The number of retransmission request processes indicates a domain, a redundancy version domain, a transport block size indication domain, and a cyclic redundancy check domain;
  • a flag field specifically, a time domain resource allocation and a modulation scheme domain
  • the number of retransmission request processes indicates a domain, a redundancy version domain, a transport block size indication domain, and a cyclic redundancy check domain;
  • the first indication field may be indicated by a bit less than or equal to 5 bits, and may specifically be 5 bits or 4 bits.
  • Step 32 Transmit the DCI according to the DCI format.
  • the specific format of the DCI is as follows, including the following fields:
  • Frequency domain resource allocation (frequency domain resource allocation domain);
  • Time domain and modulation scheme time domain resource allocation and modulation order domain
  • Cyclic redundancy check (CRC).
  • the modulation order domain and the time domain resource allocation domain are performed by means of joint indication, assuming that the number of symbols allocated by the time domain resource is n OFDM symbols, and when K ⁇ n ⁇ N (N ⁇ K), 64QAM is fixedly adopted; When N ⁇ n ⁇ M(M ⁇ N), 16QAM is fixed; when n>M, QPSK coding is used, as shown in Table 5 below:
  • the DCI when the DCI is scrambled by SI-RNTI, the DCI is used to schedule the RMSI/OSI, and the compact DCI may adopt the following domain values:
  • Time domain and modulation scheme 5 bits
  • TB size indication (transport block size indication field): 3 bits;
  • HARQ process number (mixed automatic repeat request process number indication field): 1 bit;
  • RV redundant version
  • the frequency domain resource allocation granularity is 1 RB;
  • the frequency domain resource allocation granularity is 2 RBs
  • the frequency domain resource allocation granularity is 4 RBs
  • Time domain and modulation scheme A time domain resource allocation table is configured by default, wherein 5 bits are used to indicate the time domain resource allocation of the SI, and each code point indicates a time domain resource allocation in the table. Configuration.
  • the TB size indication may be indicated by less than or equal to 5 bits, for example, 3 bits may be used to indicate the transport block size.
  • n 2 64QAM 2 ⁇ n ⁇ 4 16QAM n>4 QPSK
  • Time domain resource allocation defined relative to the slot boundary:
  • time domain resource allocation For example, if CORESET (control resource set), RMSI, and SSB (synchronization information block) are sent together, the possible values of time domain resource allocation are:
  • the SSB synchronization information block adopts a numerology (digital) of 15 kHz or 30 kHz, and the SSB and the RMSI are TDM time division multiplexing.
  • the time domain resources and SSBs that represent the RMSI and the CORESET that schedules the RMSI are sent on different time domain symbols.
  • RMSI can be used at 15KHz subcarrier spacing.
  • SSB and RMSI use TDM time division multiplexing.
  • the location of the CORESET where the RMSI control signaling is located is derived from the location of the SSB. The possible locations are shown in Figure 4.
  • the RMSI may be scheduled in the remaining unoccupied resources, as shown.
  • the occupied resource is (0, 2, #6)
  • "0" indicates that the PDSCH and the CORESET that schedules the PDSCH are offset by 0 slots, that is, transmitted in the same slot
  • "2" indicates that the PDSCH transmission occupies 2 OFDM.
  • the symbol “#6” indicates that the PDSCH can be occupied from the symbol of the slot number 6 (i.e., the 7th OFDM symbol of the slot).
  • the SSB uses 30KHz SCS, and 4 SSBs can be placed in 2 slots. The position is as shown in the figure. If the RMSI uses 30KHz SCS, the resources that can be occupied are shown in the figure. If the available resources are (1, 4, #10), "1" indicates that the PDSCH and the CORESET that schedules the PDSCH are offset by 1 slot, that is, the next slot is transmitted in the slot where the CORESET is located, and "4" indicates the PDSCH transmission. Occupies 4 OFDM symbols. "#10" indicates that the PDSCH can be occupied from the symbol with the slot number 10 (ie, the 11th OFDM symbol of the slot).
  • the SSB uses a numerology of 120 kHz or 240 kHz, and the SSB and the RMSI can be multiplexed for FDM or TDM.
  • the SSS of the SSB is 120KHz, up to 4 SSBs can be transmitted in 2 slots, as shown in Figure 5. If the RMSI is configured to be 120 kHz, the available resources for it can be represented as (0, 2, #6), (0, 2, #10) as shown.
  • the time domain resources and SSBs occupied by the RMSI and the CORESET scheduling the RMSI are transmitted on different time domain symbols.
  • the SSB uses 120KHz SCS, up to 8 SSBs can be placed in 4 slots, the location of which is shown in Figure 6. If the RMSI is at this time, the subcarrier spacing of 120KHz is used. The resources that the RMSI can occupy are as shown.
  • the available time domain resources are configured as: (0, 2, #2), (0, 2, #4), (0, 2, #6), (0, 2 , #8), (0, 2, #12); (1, 2, #0), (1, 2, #6), (1, 2, #10), (1, 2, #12); (1, 4, #10); a total of 10 time domain resource allocation schemes.
  • the location of the RMSI is not limited by the SSB location.
  • N represents the number of search spaces in a slot
  • M is a parameter defined in the protocol. According to M and N, the relationship between the time domain relative positions between the PDCCH monitoring windows of the Type 0 common search space corresponding to two consecutive nominal SSBs (there may be other symbols in the middle of two consecutive SSBs) may be determined.
  • the time domain resource allocation scheme may be: consider a configuration in which the PDSCH can be subsequently transmitted after the PDCCH is transmitted. Its sometimes domain resource configuration: (0, 4, #2), (0, 4, #4), (0, 4, #6), (0, 4, #10); (0, 7, #2) , (0, 7, #4), (0, 7, #7); (0, 12, #2); (0, 10, #2).
  • the TB size indication can be indicated by 3 bits.
  • Use 000 to represent the minimum TBS of the SI 111 to represent the maximum TBS of the SI; quantize the SI to 8 values, and define the size of each code point, as shown in Table 8 below:
  • the DCI when the DCI is scrambled by the P-RNTI, the DCI is used to schedule paging information (Paging), and the DCI may adopt the following domain values:
  • Flag 1 bit
  • Time domain and modulation scheme 4bits
  • Flag is used to distinguish between Paging/direct indication, 0 means direct indication by direct indication, and 1 means paging.
  • Frequency domain resource allocation When the BWP is limited to 24 RBs, the frequency domain resource allocation granularity is 1 RB. When the BWP is limited to 48 RBs, the frequency domain resource allocation granularity is 2 RBs. When the BWP is limited to 96 RBs. The frequency domain resource allocation granularity is 4RBs. Use the downlink resource allocation type1 to allocate.
  • time domain resource allocation and modulation order of the time domain resource allocation and modulation order are as follows:
  • a table For example, a 16-line time domain resource allocation table is configured by default. Of course, the configuration value in the table is not limited to 16 rows. When 16 rows, 4 bits can be used to indicate the paging time domain resource allocation, each code. Point indicates a time domain resource allocation configuration in the table.
  • n>4 QPSK encoding is used, as shown in Table 9 below:
  • n 2 64QAM 2 ⁇ n ⁇ 4 16QAM n>4 QPSK
  • the time domain resource allocation can be configured as follows: a table is defined, and the configuration value in the table is not limited to 16 rows. For example, 16 time domain resource allocation modes are configured, and 4 bits indicates time domain resource configuration, as shown in Table 10 below. Show:
  • the TB size indication is indicated by 3 bits
  • the minimum TBS of paging is indicated by 000
  • the maximum TBS of paging information is indicated by 111
  • the paging information is quantized into 8 values, and the size of each code point is defined.
  • the method for transmitting downlink control information DCI in the embodiment of the present disclosure is applied to a network device, including:
  • Step 81 Determine a DCI format for transmitting downlink control information DCI, where the DCI format includes a time domain resource allocation domain and an aggregate transmission indication field; or the DCI format includes a second indication domain, where the second indication domain indicates The configuration value of the domain resource and the configuration value indicated by the aggregate transmission;
  • Step 82 Transmit the DCI according to the DCI format.
  • the time domain resource allocation domain is used to indicate: a first configuration value
  • the first configuration value is one of L1 configuration values, and the L1 configuration value is L1 in all or part of the configuration of the time domain resource;
  • the first configuration value includes: a time domain symbol length occupied by one PDSCH and an offset value, where the offset value is an offset of the PDSCH relative to a starting OFDM symbol or an ending OFDM symbol of the control resource set; L1 is the configured value
  • time domain resource allocation field when the time domain resource allocation field is indicated, a 2-bit indication is used, and of course, other length bits may also be used for indication.
  • the time domain resource assignment is 2 bits
  • four configurations may be selected from the following table 12, and the four configuration values may be predefined or configured by the upper layer through high layer signaling.
  • the 2bits indication is to select a configuration value to configure to the UE:
  • the Length shown in the table indicates the time domain symbol length occupied by the physical downlink shared channel PDSCH; Offset is the symbol offset value relative to CORESET (Control Resource Set), an example is shown in FIG.
  • the aggregated transmission indication domain is used to indicate: a second configuration value
  • the second configuration value is one of L2 configuration values, and the L2 configuration values are L2 in all or part of the configuration of the aggregate transmission indication field;
  • the second configuration value includes: an aggregation level and an interval, where the interval is an interval between aggregate transmissions; and L2 is a configured value.
  • the configuration of the Aggregation transmission indication domain includes: aggregation level (1, 2, 4, 8) and the interval between the aggregation transmissions (Interval), which can be selected from the following table.
  • Value, 2bits indicates that a configuration value is selected for configuration to the UE. As shown in Table 13:
  • the candidate value set is ⁇ 0,1,2 ⁇ 2
  • the candidate value set is ⁇ 0,1,2 ⁇ 4
  • the candidate value set is ⁇ 0,1,2 ⁇ 8
  • the candidate value set is ⁇ 0,1,2 ⁇
  • the intervals in the table indicate the intervals between aggregated transmissions, as shown in Figures 10 and 11.
  • the configuration value of the time domain resource indicated by the second indication domain and the configuration value of the aggregate transmission indication include: a third configuration value
  • the third configuration value is one of L3 configuration values, and the L3 configuration values are L3 in all or part of the configuration of the time domain resource domain and the aggregate transmission indication domain;
  • the third configuration value includes: a time domain symbol length occupied by one physical downlink shared channel, an offset value, an aggregation level, and an interval between aggregate transmissions; L3 is a configured value.
  • a table may be configured by the high-level signaling according to a predefined size, for example, the RRC configures 16 configuration values for the UE, and is indicated by 4 bits, as shown in Table 14 below:
  • the method for transmitting downlink control information DCI in the embodiment of the present disclosure is applied to a network device, including:
  • Step 121 Determine a DCI format for transmitting downlink control information DCI, where the DCI format includes a time domain resource allocation domain and an aggregate transmission indication field, or the DCI format includes a second indication domain, where the second indication domain indicates The configuration value of the domain resource and the configuration value indicated by the aggregate transmission;
  • the DCI format further includes: a DCI format identifier field, a frequency domain resource allocation domain, a virtual resource block VRB to a physical resource block PRB mapping domain, a modulation and coding scheme domain, a new data indication domain, a redundancy version domain, and a hybrid automatic weight
  • the HARQ process number indication field, the downlink allocation index indication field, the transmission power control TPC indication field of the physical uplink control channel PUCCH, the PUCCH resource indication field, the feedback time indication field of the physical downlink shared channel PDSCH to HARQ, and the cyclic redundancy check At least one of the domains.
  • Step 122 Transmit the DCI according to a DCI format.
  • the DCI when the DCI is scrambled by the C-RNTI, the DCI can be used to schedule data in the URLLC scenario, where the time domain resource allocation and the aggregate transmission are respectively indicated, and the domain values are as follows:
  • DCI format identifier 1 bit;
  • Frequency domain resource assignment X bits
  • Time domain resource assignment 2bits
  • VRB-to-PRB mapping mapping from VB to PRB: 1 bit
  • Modulation and coding scheme 2bits
  • HARQ process number 2 bits
  • TPC command for PUCCH transmission power control command of PUCCH: 2 bits;
  • PUCCH resource indicator 2 bits
  • PDSCH-to-HARQ feedback timing indicator 1 bit
  • the PDSCH-to-HARQ_feedback timing indicator 1 bit, one state indicates that the PDSCH and the HARQ-ack are transmitted in the same time slot, and the other state indicates that the HARQ-ack is transmitted in the subsequent time slot immediately adjacent to the time slot in which the PDSCH is located.
  • the DCI When the DCI is scrambled by C-RNTI, the DCI can be used to schedule data in the URLLC scenario, where the time domain resource allocation and the aggregate transmission are jointly indicated, and the domain values are as follows:
  • Time domain resource assignment&aggregation transmission indication 4 bits
  • VRB-to-PRB mapping mapping from VB to PRB: 1 bit
  • Modulation and coding scheme 2bits
  • HARQ process number 2 bits
  • TPC command for PUCCH transmission power control command of PUCCH: 2 bits;
  • PUCCH resource indicator 2 bits
  • PDSCH-to-HARQ feedback timing indicator 1 bit
  • the PDSCH-to-HARQ_feedback timing indicator is 1 bit; one state indicates that the PDSCH and the HARQ-ack are transmitted in the same slot, and the other state indicates that the HARQ-ack is transmitted in the subsequent slot adjacent to the slot where the PDSCH is located.
  • the DCI When the DCI is scrambled by C-RNTI, the DCI can be used to schedule downlink data in the URLLC scenario, where the time domain resource allocation and the aggregate transmission are jointly indicated, and the domain values are as follows:
  • Modulation and coding scheme 2bits
  • the DCI When the DCI is scrambled by C-RNTI, the DCI can be used to schedule uplink data in the URLLC scenario, where the time domain resource allocation and the aggregate transmission are jointly indicated, and the domain values are as follows:
  • Modulation and coding scheme 2bits
  • the method in the foregoing embodiment of the present disclosure adds at least one of a time domain resource allocation domain, a modulation order domain, and an aggregate transmission indication field in a DCI, and a time domain resource allocation domain, a modulation order domain joint indication, or a time
  • the domain resource allocation domain and the aggregate transmission indication joint indication reduce the load of the DCI, and under the limited resource configuration, thereby reducing the code rate of the PDCCH and improving the coverage of the PDCCH.
  • DCI is used to schedule SI/paging
  • the coverage of DCI for scheduling SI/paging can be improved, and the efficiency of SI/paging spectrum can be improved while the code rate is reduced.
  • DCI is used to schedule PDSCH/PUSCH transmission in a URLLC scenario, the reliability of DCI transmission can be improved.
  • the configuration values in the table are merely illustrative, and do not include all configuration values, and the size of the specific configuration values is not limited to the values listed in the table.
  • the specific bit lengths used for the various fields of the DCI are not limited to the values listed in the foregoing embodiments, and may be indicated by other length bits, or may be used. Other indications are indicated.
  • the transmission apparatus 130 of the downlink control information DCI of the embodiment of the present disclosure can implement the details of the DCI transmission method described in all the foregoing embodiments, and achieve the same effect, and the DCI transmission apparatus 130 specifically Includes the following functional modules:
  • the processing module 131 is configured to determine a DCI format for transmitting downlink control information DCI, where the DCI format includes: a time domain resource allocation domain, an aggregated transmission indication domain, a first indication domain, or a second indication domain, where the first indication The domain indicates a configuration value of the time domain resource and a configuration value of the modulation order, and the second indication domain indicates a configuration value of the time domain resource and a configuration value of the aggregate transmission indication;
  • the transceiver module 132 is configured to transmit the DCI according to the DCI format.
  • the configuration value of the time domain resource indicated by the first indication domain includes: the number of OFDM symbols indicated by the time domain resource domain;
  • the configuration value of the modulation order indicated by the first indication field includes the determined modulation order according to the number of OFDM symbols indicated by the time domain resource domain.
  • the modulation order determined according to the number of OFDM symbols indicated by the time domain resource domain is a first type of coding mode, where n is the number of OFDM symbols indicated by the time domain resource allocation, And N ⁇ K, N, K are configured values or pre-configured fixed values.
  • the modulation order determined according to the number of OFDM symbols indicated by the time domain resource domain is a second type coding mode, where n is the number of OFDM symbols indicated by the time domain resource allocation field
  • M ⁇ N, N, M are configured values or pre-configured fixed values.
  • the modulation order determined according to the number of OFDM symbols indicated by the time domain resource domain is a third type coding mode, where n is the number of OFDM symbols indicated by the time domain resource allocation field, M A fixed value for the configured value or pre-configured.
  • the modulation order determined according to the number of OFDM symbols indicated by the time domain resource domain is a fourth type coding mode, where n is the number of OFDM symbols indicated by the time domain resource allocation field, L A fixed value for the configured value or pre-configured.
  • the first type coding mode, the second type coding mode, the third type coding mode, and the fourth type coding mode may be one of 16QAM, 64QAM, and QPSK, of course, and are not limited to these coding modes.
  • the DCI further includes: a flag domain, a frequency domain resource allocation domain, a hybrid automatic repeat request HARQ process number indication domain, a redundancy version domain, a transport block size indication domain, and at least a cyclic redundancy check domain.
  • a flag domain a flag domain, a frequency domain resource allocation domain, a hybrid automatic repeat request HARQ process number indication domain, a redundancy version domain, a transport block size indication domain, and at least a cyclic redundancy check domain.
  • the time domain resource allocation field is used to indicate: a first configuration value; the first configuration value is one of L1 configuration values, and the L1 configuration value is Is the L1 species in all or part of the configuration of the time domain resource;
  • the first configuration value includes: a time domain symbol length occupied by one PDSCH and an offset value, where the offset value is a deviation of the PDSCH from a starting OFDM symbol or an ending OFDM symbol of the control resource set.
  • Move; L1 is the configured value.
  • the aggregate transmission indication field is used to indicate: a second configuration value
  • the second configuration value is one of L2 configuration values, and the L2 configuration values are L2 in all or part of the configuration of the aggregate transmission indication field;
  • the second configuration value includes: an aggregation level and an interval, where the interval is an interval between aggregate transmissions; and L2 is a configured value.
  • the configuration value of the time domain resource indicated by the second indication field and the configuration value of the aggregate transmission indication include: a third configuration value
  • the third configuration value is one of L3 configuration values, and the L3 configuration values are L3 in all or part of the configuration of the time domain resource domain and the aggregate transmission indication domain;
  • the third configuration value includes: a time domain symbol length occupied by one physical downlink shared channel, an offset value, an aggregation level, and an interval between aggregate transmissions; and L3 is a configured value.
  • the DCI further includes: a DCI format identifier field, a frequency domain resource allocation domain, a virtual resource block VRB to a physical resource block PRB mapping domain, a modulation and coding scheme domain, a new data indication domain, and a redundancy version domain.
  • a hybrid automatic retransmission HARQ process number indication field a downlink allocation index indication field, a physical uplink control channel PUCCH transmission power control TPC indication field, a PUCCH resource indication domain, a physical downlink shared channel PDSCH to HARQ feedback time indication domain, and At least one of the cyclic redundancy check fields.
  • the transmission device of the DCI of the embodiment of the present disclosure adopts the same implementation method as the above method, and all the implementation manners of the foregoing methods are applicable to the embodiment of the device, and the same technical effects can be achieved.
  • an embodiment of the present disclosure further provides a network device 140, including:
  • the processor 141 is configured to determine a DCI format for transmitting downlink control information DCI, where the DCI format includes: a time domain resource allocation domain, an aggregated transmission indication domain, a first indication domain, or a second indication domain, where the first indication is The domain indicates a configuration value of the time domain resource and a configuration value of the modulation order, and the second indication domain indicates a configuration value of the time domain resource and a configuration value of the aggregate transmission indication;
  • the transceiver is configured to transmit the DCI according to the DCI format, and specifically includes an antenna, a radio frequency device, and the like.
  • the network device may further include: an antenna 143, a radio frequency device 144, and a baseband device 145.
  • the antenna 143 is connected to the radio frequency device 144.
  • the radio frequency device 144 receives the information via the antenna 143 and transmits the received information to the baseband device 145 for processing.
  • the baseband device 145 processes the information to be transmitted and transmits it to the radio frequency device 144.
  • the radio frequency device 144 processes the received information and transmits it via the antenna 143.
  • the above-described DCI transmission device may be located in the baseband device 145, and the method performed by the network device in the above embodiment may be implemented in the baseband device 145, which includes the processor 141 and the memory 142.
  • the baseband device 145 may include, for example, at least one baseband board having a plurality of chips disposed thereon, as shown in FIG. 14, one of which is, for example, a processor 141, coupled to the memory 142 to invoke a program in the memory 142 to execute The operations shown in the above method embodiments.
  • the baseband device 145 can also include a network interface 146 for interacting with the radio frequency device 144, such as a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the processor here may be a processor or a collective name of multiple processing elements.
  • the processor may be a CPU, an ASIC, or one or more configured to implement the method performed by the above network device.
  • Integrated circuits such as one or more microprocessors, one or more DSPs, or one or more field programmable gate array FPGAs.
  • the storage element can be a memory or a collective name for a plurality of storage elements.
  • Memory 142 can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
  • SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SDRAM Synchronous Connection Dynamic Random Access Memory
  • DRRAM direct memory bus random access memory
  • Embodiments of the present disclosure also provide a network device including a processor, a memory, and a computer program stored on the memory and executable on the processor, the processor implementing the DCI as described above when executing the computer program The steps in the transfer method.
  • the network device of an embodiment of the present disclosure further includes a computer program stored on the memory and operable on the processor, the processor invoking a computer program in the memory to execute the method performed by each module shown in FIG.
  • the computer program when invoked by the processor 141, can be used to perform the steps of the DCI transmission method as described above.
  • the network device may be a Global System of Mobile communication (GSM) or a Base Transceiver Station (BTS) in Code Division Multiple Access (CDMA), or may be a wideband code division multiple access.
  • GSM Global System of Mobile communication
  • BTS Base Transceiver Station
  • CDMA Code Division Multiple Access
  • a base station (NodeB, NB) in the (Wideband Code Division Multiple Access, WCDMA) may also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or an access point, or in a future 5G network.
  • the base station or the like is not limited herein.
  • the DCI configured in the network device in the embodiment of the present disclosure can improve the coverage of the DCI used for scheduling SI/paging when the DCI is used for scheduling SI/paging, and can also improve the efficiency of the SI/paging spectrum while reducing the code rate. To improve the coverage of SI/paging.
  • DCI is used to schedule PDSCH/PUSCH transmission in a URLLC scenario, the reliability of DCI transmission can be improved.
  • each module of the above network device and terminal is only a division of logical functions. In actual implementation, it may be integrated into one physical entity in whole or in part, or may be physically separated. And these modules can all be implemented by software in the form of processing component calls; or all of them can be implemented in hardware form; some modules can be realized by processing component calling software, and some modules are realized by hardware.
  • the determining module may be a separately set processing element, or may be integrated in one of the above-mentioned devices, or may be stored in the memory of the above device in the form of program code, by a processing element of the above device. Call and execute the functions of the above determination module.
  • the implementation of other modules is similar.
  • each step of the above method or each of the above modules may be completed by an integrated logic circuit of hardware in the processor element or an instruction in a form of software.
  • the above modules may be one or more integrated circuits configured to implement the above methods, such as one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors, or One or more digital signal processors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), and the like.
  • ASICs Application Specific Integrated Circuits
  • DSPs digital signal processors
  • FPGAs Field Programmable Gate Arrays
  • the processing component can be a general purpose processor, such as a central processing unit (CPU) or other processor that can invoke program code.
  • these modules can be integrated and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • the computer readable storage medium such as a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, a portion of the technical solution of the present disclosure that contributes in essence or to the related art or a part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several The instructions are for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present disclosure.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
  • the objects of the present disclosure can also be achieved by running a program or a set of programs on any computing device.
  • the computing device can be a well-known general purpose device.
  • the objects of the present disclosure may also be realized by merely providing a program product including program code for implementing the method or apparatus. That is to say, such a program product also constitutes the present disclosure, and a storage medium storing such a program product also constitutes the present disclosure.
  • the storage medium may be any known storage medium or any storage medium developed in the future.
  • various components or steps may be decomposed and/or recombined.

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Abstract

本申请公开了一种下行控制信息DCI的传输方法、装置及网络设备,其中,方法包括:确定用于传输下行控制信息DCI的DCI格式,所述DCI格式包括:时域资源分配域、聚合传输指示域、第一指示域或第二指示域,所述第一指示域指示时域资源的配置值和调制阶数的配置值,所述第二指示域指示时域资源的配置值和聚合传输指示的配置值;根据所述DCI格式,传输所述DCI。

Description

下行控制信息DCI的传输方法、装置及网络设备
相关申请的交叉引用
本申请主张在2018年2月12日在中国提交的中国专利申请号No.201810147628.2的优先权,其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域,尤其涉及一种下行控制信息DCI的传输方法、装置及网络设备。
背景技术
在新无线(New Radio,NR)系统中,广播信息可以分为主信息块(master information block,MIB),剩余最小系统信息(remaining minimum system information,RMSI)和其它系统信息(other system information,OSI)和寻呼(paging)信息;
其中,MIB在物理广播信道(physical broadcast channel,PBCH)中传输;
RMSI和OSI在物理下行共享信道(physical downlink shared channel,PDSCH)中传输,由相应的物理下行控制信道(physical downlink control channel,PDCCH)调度;寻呼信息可以分为两种:一种在PDCCH(物理下行控制信道)中直接指示,一种为PDCCH(物理下行控制信道)调度PDSCH(物理下行共享信道)传输寻呼信息。
MIB,RMSI,OSI和paging均为广播信息,小区的覆盖范围为MIB,SI,paging以及SI/paging PDCCH的覆盖范围的交集。
在NR系统中,MIB的负载为56bits,NR PBCH的符号数为576资源粒子(resource elements,REs),其中DMRS占1/4,所以有576*(1-1/4)=432REs用于传输数据。PBCH采用QPSK编码,PBCH中只包含MIB信息,故MIB的编码比特可以达到432*2=864bits,码率为56/864=0.065,且MIB可传输4次,在终端进行合并。
在NR系统中,相关技术中可以采用DCI format 1_0(downlink fallback  DCI,下行回退DCI)来调度RMSI/OSI/paging信息。
DCI format 1_0的负载为64bits左右,PDCCH可采用的聚合等级(aggregation level,AL)为4,8,16,不同聚合等级下,减去1/4的DMRS符号数,可用的REs数目如下所示:
AL RE number 编码比特(bits) 码率
4 216 432 0.148
8 432 864 0.074
16 864 1728 0.052
一个控制信道粒子(Control Channel Element,CCE)包含6个RE组(REG),一个REG为12REs;
当AL=4时,可用的RE为4*6*12*(1-1/4)=216REs。
RMSI的控制资源集(Control-resource Set,CORESET)频域资源为24RBs,48RBs,96RBs;其中,RB为资源块;
RMSI CORESET配置初始BWP(initial BWP)的带宽,等于RMSI CORESET的带宽。
所以初始带宽部分(initial Bandwidth Part,initial BWP)根据配置,为24RBs,48RBs,96RBs,若为微时隙(mini-slot)调度,可占用的符号数为2/4/7OFDM符号,SI/paging采用单端口传输,且采用解调参考信号(Demodulation Reference Signal,DMRS)配置(configuration)type2,则DMRS占用第一个OFDM符号的1/3的RE资源,其可用资源如下:
Max REs 24RBs 48RBs 96RBs
2 OFDM symbols 480 960 1920
4 OFDM symbols 1056 2112 4224
7 OFDM symbols 1920 3840 7680
若以2OFDM symbols,24RBs传输,可用REs计算为:2*12*24–1*12*24*1/3=432REs。
采用DCI format 1_0调度SI/paging时,在聚合等级为4或8的时候,码率偏大(相比MIB而言,MIB码率为0.065),PDCCH可能达不到MIB的覆盖范围。
在LTE中,SI及paging固定采用QPSK调制。
在NR系统中,DCI format 0_0/1_0用于调度高可靠低时延场景(Ultra Reliable&Low Latency Communication,URLLC)下的数据,其码率较高,导致PDCCH覆盖范围较小。
发明内容
本公开实施例提供了一种下行控制信息DCI的传输方法、装置及网络设备,以解决相关技术中DCI传输时,PDCCH码率较高的问题,覆盖范围不足的问题。
第一方面,本公开实施例提供了一种下行控制信息DCI的传输方法,应用于网络设备,包括:
确定用于传输下行控制信息DCI的DCI格式,所述DCI格式包括:时域资源分配域、聚合传输指示域、第一指示域或第二指示域,所述第一指示域指示时域资源的配置值和调制阶数的配置值,所述第二指示域指示时域资源的配置值和聚合传输指示的配置值;
根据所述DCI格式,传输所述DCI。
第二方面,本公开实施例还提供了一种下行控制信息DCI的传输装置,应用于网络设备,包括:
处理模块,用于确定用于传输下行控制信息DCI的DCI格式,所述DCI格式包括:时域资源分配域、聚合传输指示域、第一指示域或第二指示域,所述第一指示域指示时域资源的配置值和调制阶数的配置值,所述第二指示域指示时域资源的配置值和聚合传输指示的配置值;
收发模块,用于根据所述DCI格式,传输所述DCI。
第三方面,本公开实施例提供了一种网络设备,包括:
处理器,用于确定用于传输下行控制信息DCI的DCI格式,所述DCI格式包括:时域资源分配域、聚合传输指示域、第一指示域或第二指示域,所述第一指示域指示时域资源的配置值和调制阶数的配置值,所述第二指示域指示时域资源的配置值和聚合传输指示的配置值;
收发机,用于根据所述DCI格式,传输所述DCI。
第四方面,本公开实施例提供了一种网络设备,所述网络设备包括处理器、存储器以及存储于所述存储器上并可在所述处理器上运行的计算机程序,所述处理器执行所述计算机程序时实现如上所述的下行控制信息DCI的传输方法的步骤。
第五方面,本公开实施例提供了一种计算机可读存储介质,所述计算机可读存储介质上存储有计算机程序,所述计算机程序被处理器执行时实现如上所述的下行控制信息DCI的传输方法的步骤。
这样,本公开实施例的下行控制信息DCI的传输方法,确定用于传输下行控制信息DCI的DCI格式,所述DCI格式包括:时域资源分配域、聚合传输指示域、第一指示域或第二指示域,所述第一指示域指示时域资源的配置值和调制阶数的配置值,所述第二指示域指示时域资源的配置值和聚合传输指示的配置值;并根据所述DCI格式,传输所述DCI;从而实现了配置较小负载的DCI,在有限的资源配置下,从而降低了PDCCH的码率,提高PDCCH的覆盖范围。
附图说明
为了更清楚地说明本公开实施例的技术方案,下面将对本公开实施例的描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本公开的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1表示本公开的实施例DCI的传输方法的第一流程图;
图2表示本公开的实施例DCI的传输方法的第二流程图;
图3表示本公开的实施例DCI的传输方法的第三流程图;
图4表示本公开的实施例中,CORESET、RMSI和SSB一起发送时,时域资源分配的时域位置的第一示例图;
图5表示本公开的实施例中,CORESET、RMSI和SSB一起发送时,时域资源分配的时域位置示意第二示例图;
图6表示本公开的实施例中,CORESET、RMSI和SSB一起发送时,时域资源分配的时域位置示意第三示例图;
图7表示本公开的实施例中,RMSI及CORESET控制资源集合在SSB同步信息块发送完后再发送时,时域资源分配的时域位置示意图;
图8表示本公开的实施例DCI的传输方法的第四流程图;
图9表示本公开的实施例中,PDSCH相对于CORESET的符号偏移的示例图;
图10表示本公开的实施例中,聚合传输之间的间隔第一示例图;
图11表示本公开的实施例中,聚合传输之间的间隔第二示例图;
图12表示本公开的实施例的DCI的传输方法的第四流程图;
图13表示本公开的实施例的DCI的传输装置的模块框图;
图14表示本公开的实施例的网络设备的模块框图。
具体实施方式
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例,然而应当理解,可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反,提供这些实施例是为了能够更透彻地理解本公开,并且能够将本公开的范围完整的传达给本领域的技术人员。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便这里描述的本申请的实施例例如能够以除了在这里图示或描述的那些以外的顺序实施。此外,术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含,例如,包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元,而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
如图1所示,本公开实施例的下行控制信息DCI的传输方法,应用于网络设备,包括:
步骤11,确定用于传输下行控制信息DCI的DCI格式,所述DCI格式包括:时域资源分配域、聚合传输指示域、第一指示域或第二指示域,所述第一指示域指示时域资源的配置值和调制阶数的配置值,所述第二指示域指 示时域资源的配置值和聚合传输指示的配置值;
步骤12,根据所述DCI格式,传输所述DCI。
本公开实施例的下行控制信息DCI的传输方法,确定用于传输下行控制信息DCI的DCI格式,所述DCI格式包括:时域资源分配域、聚合传输指示域、第一指示域或第二指示域,所述第一指示域指示时域资源的配置值和调制阶数的配置值,所述第二指示域指示时域资源的配置值和聚合传输指示的配置值;并根据所述DCI格式,传输所述DCI;从而实现了配置较小负载的DCI,在有限的资源配置下,从而降低了PDCCH的码率,提高PDCCH的覆盖范围。
如图2所示,本公开实施例的下行控制信息DCI的传输方法,应用于网络设备,包括:
步骤21,确定用于传输下行控制信息DCI的DCI格式,所述DCI格式包括:第一指示域,第一指示域指示时域资源的配置值和调制阶数的配置值,所述第一指示域指示的时域资源的配置值包括:时域资源域指示的OFDM符号数目;所述第一指示域指示的调制阶数的配置值包括:根据时域资源域指示的OFDM符号数目,确定的所述调制阶数。
步骤22,根据所述DCI格式,传输所述DCI。
具体的,当K≤n≤N时,根据时域资源域指示的OFDM符号数目确定的所述调制阶数为第一类型编码方式,其中,n为所述时域资源分配指示的OFDM符号数目,且N≥K,N、K为配置的值或者预配置的固定值。这里的第一类型编码方式可以为16QAM、64QAM、QPSK中的一种,当然并不限于这些编码方式。
该实施例中,当N<n≤M时,根据时域资源域指示的OFDM符号数目确定的所述调制阶数为第二类型编码方式,其中,n为所述时域资源分配域指示的OFDM符号数目,且M≥N,N、M为配置的值或者预配置的固定值。这里的第二类型编码方式可以为16QAM、64QAM、QPSK中的一种,当然并不限于这些编码方式。
该实施例中,当n>M时,根据时域资源域指示的OFDM符号数目确定的所述调制阶数为第三类型编码方式,其中,n为所述时域资源分配域指示 的OFDM符号数目,M为配置的值或者预配置的固定值。这里的第三类型编码方式可以为16QAM、64QAM、QPSK中的一种,当然并不限于这些编码方式。
该实施例中,当n=L时,根据时域资源域指示的OFDM符号数目确定的所述调制阶数为第四类型编码方式,其中,n为所述时域资源分配域指示的OFDM符号数目,L为配置的值或者预配置的固定值。这里的第四类型编码方式可以为16QAM、64QAM、QPSK中的一种,当然并不限于这些编码方式。
具体来说,假设时域资源分配的符号数目为n OFDM symbols,当K≤n≤N(N≥K)的时候,固定采用64正交幅度调制(Quadrature Amplitude Modulation,QAM),当N<n≤M(M≥N)时,固定采用16QAM,当n>M时,采用四相相移键控(Quadrature Phase Shift Keying,QPSK)编码,如下表1所示:
符号数n 调制阶数
K≤n≤N 64QAM
N<n≤M 16QAM
n>M QPSK
表1
具体实现时,假设时域资源分配的符号数目为n OFDM symbols,当n=2的时候,固定采用64QAM,当2<n≤4时,固定采用16QAM,当n>4时,采用QPSK编码,具体如下表2所示:
符号数n 调制阶数
n=2 64QAM
2<n≤4 16QAM
n>4 QPSK
表2
当然,在一些特定场景下,上述根据时域资源域分配的OFDM符号数目,确定所述调制阶数域采用的调制阶数的方式中,可以考虑其中的至少一种,如下表所示,为考虑其中两种的情况:
比如,假设时域资源分配的符号数目为n OFDM symbols,当P1≤n≤P2的时候,固定采用16QAM,当n>P2时,采用QPSK编码。P1、P2为配置的值,如下表3所示:
符号数n 调制阶数
P1≤n≤P2 16QAM
n>P2 QPSK
表3
具体实现时,假设时域资源分配的符号数目为n OFDM symbols,当2≤n≤4的时候,固定采用16QAM,当n>4时,采用QPSK编码,如表4所示:
符号数n 调制阶数
2≤n≤4 16QAM
n>4 QPSK
表4
如图3所示,本公开实施例的下行控制信息DCI的传输方法,应用于网络设备,包括:
步骤31,确定用于传输下行控制信息DCI的DCI格式,所述DCI格式包括:标志域、第一指示域(具体可以是时域资源分配和调制方案域)、频域资源分配域、混合自动重传请求进程数指示域、冗余版本域、传输块大小指示域以及循环冗余检查域;
所述第一指示域可以采用小于或者等于5比特的比特位进行指示,具体可以是5比特或者4比特。
步骤32,根据所述DCI格式,传输所述DCI。
该实施例中,DCI的具体格式如下,包括以下域:
Flag(标志域);
frequency domain resource allocation(频域资源分配域);
time domain and modulation scheme(时域资源分配和调制方案):时域资源分配域(time domain resource allocation)和调制阶数(modulation order)域;
TB size indication(传输块大小指示);以及
循环冗余检查域(cyclic redundancy check,CRC)。
其中,调制阶数域和时域资源分配域采用联合指示的方式进行,假设时域资源分配的符号数目为n OFDM symbols,当K≤n≤N(N≥K)的时候,固定采用64QAM;当N<n≤M(M≥N)时,固定采用16QAM;当n>M时,采用QPSK编码,如下表5所示:
符号数n 调制阶数
K≤n≤N 64QAM
N<n≤M 16QAM
n>M QPSK
表5
本公开的该实施例在具体实现时,当DCI采用SI-RNTI加扰时,DCI用于调度RMSI/OSI,compact DCI可采用以下域值:
Frequency domain resource allocation(频域资源分配域):9bits;
time domain and modulation scheme(时域资源分配和调制方案):5bits;
TB size indication(传输块大小指示域):3bits;
HARQ process number(混合自动重传请求进程数指示域):1bit;
RV(冗余版本):1bit;
CRC(循环冗余检查):16bits;
Frequency domain resource allocation(频域资源分配):9bits;
当initial BWP(初始带宽部分)限制在24RBs内时,频域资源分配粒度为1RB;
当initial BWP限制在48RBs内时,频域资源分配粒度为2RBs;
当initial BWP限制在96RBs内时,频域资源分配粒度为4RBs;
采用downlink resource allocation type1(下行资源分配类型一)进行分配。
Time domain and modulation scheme(时域资源分配和调制方案):默认配置一个时域资源分配表格,其中,可以采用5bits指示SI的时域资源分配,每个码点指示表格中一种时域资源分配配置。
TB size indication(传输块大小指示域)可以采用小于或者等于5bits进行指示,例如,可以用3bits来指示传输块大小。
其中,modulation order(调制阶数)和time domain resource allocation(时域资源分配)联合编码时,假设时域资源分配的符号数目为n OFDM symbols,当n=2的时候,固定采用64QAM,当2<n≤4时,固定采用16QAM,当n>4时,采用QPSK编码,如下表6所示:
符号数n 调制阶数
n=2 64QAM
2<n≤4 16QAM
n>4 QPSK
表6
time domain resource allocation(时域资源分配),相对于slot boundary(时隙边界)来定义:
比如:若CORESET(控制资源集合)、RMSI和SSB(同步信息块)一起发送,则其时域资源分配的可能值为:
如图4所示,若采用低频段,SSB同步信息块采用numerology(数字)为15KHz或30KHz,此时SSB和RMSI为TDM时分复用。
TDM复用时,表示RMSI占用的时域资源和SSB以及调度RMSI的CORESET在不同的时域符号上发送。
当SSB采用15KHz SCS(sub carrier spacing,子载波间隔),1个slot内最多可以放置2个SSB,其位置如图4所示。
若此时RMSI可采用15KHz的子载波间隔。SSB和RMSI采用TDM时分复用。RMSI的控制信令所在的CORESET的位置是根据SSB的位置推算得到,可能位置如图4所示,则RMSI可能在剩余未占用的资源中进行调度,如图所示。
若其占用资源为(0,2,#6),“0”表示PDSCH和调度该PDSCH的CORESET偏移0个slot,即在同一个slot中传输,“2”表示该PDSCH传输占用2个OFDM符号,“#6”表示PDSCH从该slot编号为6的符号(即该slot的第7个OFDM符号)开始可占用。
再如图4所示,SSB采用30KHz SCS,2个slots内可放置4个SSB,位置如图所示,若RMSI采用30KHz SCS,其可占用的资源如图所示。若可占 用的资源为(1,4,#10),“1”表示PDSCH和调度该PDSCH的CORESET偏移1个slot,即在CORESET所在slot的下一个slot传输,“4”表示该PDSCH传输占用4个OFDM符号。“#10”表示PDSCH从该slot编号为10的符号(即该slot的第11个OFDM符号)开始可占用。
如图5所示,若采用高频段,SSB采用numerology为120KHz或240KHz,此时SSB和RMSI可以为FDM或者TDM复用。
若为FDM复用,表示RMSI占用的时域资源在SSB时域资源范围内,SSB和RMSI可用的频域资源不同的情况。
若SSB的SCS为120KHz,在2个slots内最多可传输4个SSB,具体位置如图5所示。若RMSI配置为120KHz,可以为其可用资源如图所示,可以表示为(0,2,#6)、(0,2,#10)。
如图6所示,若为TDM复用,表示RMSI占用的时域资源和SSB以及调度RMSI的CORESET在不同的时域符号上发送。当SSB采用120KHz SCS,4个slot内最多可以放置8个SSB,其位置如图6所示。若此时RMSI采用120KHz的子载波间隔。则RMSI可占用的资源如图所示。从图4-图6中可以看出,可用的时域资源配置为:(0,2,#2),(0,2,#4),(0,2,#6),(0,2,#8),(0,2,#12);(1,2,#0),(1,2,#6),(1,2,#10),(1,2,#12);(1,4,#10);总共10种时域资源分配方案。
如果RMSI及CORESET控制资源集合在SSB同步信息块发送完后再发送,那么RMSI的位置不受SSB位置的限制。
CORESET可能的位置有三种情况,如下图7所示:
N=2,M=1/2,如图中的情景(case)1和case 1’;
N=1,M=1,如图中的case 2;
N=1,M=2,如图中的case 3;
N表示一个slot中搜索空间的数目,和M是协议中定义的参数。根据M和N可以确定两个连续的名义上的SSB(两个连续的SSB中间可能有其他符号)对应的Type 0公共搜索空间的PDCCH监测窗之间的时域相对位置的关系。
假设CORESET和RMSI在同一个时隙内进行调度,即K0=0的情况下, 时域资源分配方案可以是:考虑在PDCCH发送完后可以接着发送PDSCH的配置。其有时域资源配置:(0,4,#2),(0,4,#4),(0,4,#6),(0,4,#10);(0,7,#2),(0,7,#4),(0,7,#7);(0,12,#2);(0,10,#2)。
若调度14个符号,假设K0=1,时域配置为(1,14,#0)。总共也有10种情况,结合上述图4-图6,总共是20种情况。如下表7所示,其他的码点可以预留,这里一种配置为一个码点:
Figure PCTCN2019073671-appb-000001
Figure PCTCN2019073671-appb-000002
表7
该实施例中,TB size indication(传输块大小指示)可以用3bits指示。
用000表示SI的最小TBS,111表示SI的最大TBS;将SI量化为8个值,定义出每个码点的大小,可如下表8所示:
I TBS 0 1 2 3 4 5 6 7
TBS 40 136 224 328 552 776 1064 1736
表8
该实施例中,当DCI采用P-RNTI加扰时,DCI用于调度寻呼信息(Paging),DCI可采用以下域值:
Flag(标志域):1bit;
Frequency domain resource allocation(频域资源分配域):9bits;
time domain and modulation scheme(时域资源分配和调制方案):4bits;
CRC(循环冗余检查域):16bits;
Flag用于区分Paging/direct indication(直接指示),0表示采用direct indication直接指示,1表示用paging(寻呼)。
Frequency domain resource allocation(频域资源分配):当BWP限制在24RBs内时,频域资源分配粒度为1RB,当BWP限制在48RBs内时,频域资源分配粒度为2RBs,当BWP限制在96RBs内时,频域资源分配粒度为4RBs。采用downlink resource allocation type1进行分配。
本公开的实施例中,时域资源分配和调制阶数的时域资源分配和调制命令如下:
预定义一个表格,例如,默认配置一个16行时域资源分配表格,当然,该表格中的配置值不限于是16行,16行时,可以用4bits指示paging的时域资源分配,每个码点指示表格中一种时域资源分配配置。
调制阶数和时域资源分配联合编码指示时,假设时域资源分配的符号数目为n OFDM symbols,当n=2的时候,固定采用64QAM,当2<n≤4时,固定采用16QAM,当n>4时,采用QPSK编码,如下表9所示:
符号数n 调制阶数
n=2 64QAM
2<n≤4 16QAM
n>4 QPSK
表9
时域资源分配可采用以下配置:定义一个表格,该表格中的配置值不限于是16行,例如,在配置了16种时域资源分配方式,由4bits指示时域资源配置,如下表10所示:
Figure PCTCN2019073671-appb-000003
表10
TB size indication用3bits指示时,用000表示paging的最小TBS,111表示寻呼信息的最大TBS;将寻呼信息量化为8个值,定义出每个码点的大小。
I TBS 0 1 2 3 4 5 6 7
TBS 40 136 224 328 552 776 1064 1736
表11
如图8所示,本公开实施例的下行控制信息DCI的传输方法,应用于网络设备,包括:
步骤81,确定用于传输下行控制信息DCI的DCI格式,所述DCI格式包括时域资源分配域和聚合传输指示域;或者所述DCI格式包括第二指示域,所述第二指示域指示时域资源的配置值和聚合传输指示的配置值;
步骤82,根据所述DCI格式,传输所述DCI。
该实施例中,所述DCI格式包括时域资源分配域和聚合传输指示域时,所述时域资源分配域用于指示:第一种配置值;
所述第一种配置值是L1种配置值中的一种,所述L1种配置值是时域资源的全部或者部分配置中的L1种;
其中,第一种配置值包括:一个PDSCH占用的时域符号长度和一个偏移值,所述偏移值是所述PDSCH相对于控制资源集合的起始OFDM符号或者结束OFDM符号的偏移;L1为配置的值
其中,所述时域资源分配域指示时,采用2比特指示,当然也可以采用其它长度的比特位进行指示。
具体实现时,Time domain resource assignment(时域资源分配)为2bits时,可以从下表12中选择4个配置给UE,该4个配置值可以是预定义或者由高层通过高层信令进行配置,而时域资源分配采用2bits指示时,采用该2bits指示是选择一个配置值配置给UE:
Figure PCTCN2019073671-appb-000004
表12
表格中所示Length表示:物理下行共享信道PDSCH占用的时域符号长 度;Offset为相对于CORESET(控制资源集合)的符号偏移值,示例如图9所示。
该实施例中,
所述DCI格式包括时域资源分配域和聚合传输指示域时,所述聚合传输指示域用于指示:第二种配置值;
所述第二种配置值是L2种配置值中的一种,所述L2种配置值是聚合传输指示域的全部或者部分配置中的L2种;
其中,所述第二种配置值包括:一个聚合等级和一个间隔,所述间隔是聚合传输之间的间隔;L2为配置的值。
其中,所述聚合传输指示域单独指示时,采用2比特指示,当然也可以采用其它长度的比特位进行指示。
具体实现时,Aggregation transmission indication(聚合传输指示)域的配置中,包括:聚合等级(1,2,4,8)以及聚合传输之间的间隔(Interval),可以由下表中选择4个配置值,2bits指示选择一个配置值配置给UE。如表13所示:
AL Interval
1 候选值集为{0,1,2}
2 候选值集为{0,1,2}
4 候选值集为{0,1,2}
8 候选值集为{0,1,2}
表13
表格中的间隔表示聚合传输之间的间隔,示例如图10和图11所示。
该实施例中,所述DCI格式包括第二指示域时,所述第二指示域指示的时域资源的配置值和聚合传输指示的配置值包括:第三种配置值;
所述第三种配置值是L3种配置值中的一种,所述L3种配置值是时域资源域和聚合传输指示域的全部或者部分配置中的L3种;
其中,所述第三种配置值包括:一个物理下行共享信道占用的时域符号长度、一个偏移值、一个聚合等级和一个聚合传输之间的间隔;L3为配置的值
具体实现时,可由高层信令根据预定义的大小配置一个表格给UE,如RRC为UE配置16个配置值,用4bits指示,如下表14所示:
Figure PCTCN2019073671-appb-000005
表14
如图12所示,本公开实施例的下行控制信息DCI的传输方法,应用于网络设备,包括:
步骤121,确定用于传输下行控制信息DCI的DCI格式,所述DCI格式 包括时域资源分配域和聚合传输指示域;或者所述DCI格式包括第二指示域,所述第二指示域指示时域资源的配置值和聚合传输指示的配置值;
所述DCI格式还包括:DCI格式标识符域、频域资源分配域、虚拟资源块VRB到物理资源块PRB映射域、调制和编码方案域、新数据指示域、冗余版本域、混合自动重传HARQ进程数指示域、下行链路分配索引指示域、物理上行控制信道PUCCH的传输功率控制TPC指示域、PUCCH资源指示域、物理下行共享信道PDSCH到HARQ的反馈时间指示域以及循环冗余检查域中的至少一个。
步骤122,根据DCI格式,传输所述DCI。
具体实现时,当DCI采用C-RNTI加扰时,DCI可用于URLLC场景中调度数据,其中时域资源分配和聚合传输分别指示,其域值如下所示:
Identifier for DCI formats DCI(DCI格式标识符):1bit;
Frequency domain resource assignment(频域资源分配):X bits;
Time domain resource assignment(时域资源分配):2bits;
Aggregation transmission indication(聚合传输指示):2bits;
VRB-to-PRB mapping(VRB到PRB的映射):1bit;
Modulation and coding scheme(调制和编码方案):2bits;
New data indicator(新数据指示):1bit;
Redundancy version(冗余版本):1bit;
HARQ process number(HARQ进程数):2bits;
Downlink Assignment Index(下行分配索引):0bit;
TPC command for PUCCH(PUCCH的传输功率控制命令):2bits;
PUCCH resource indicator(PUCCH资源指示):2bits;
PDSCH-to-HARQ feedback timing indicator(PDSCH到HARQ反馈时间指示):1bit;
CRC(循环冗余检查);
其中,PDSCH-to-HARQ_feedback timing indicator:1bit,一个状态表示PDSCH与HARQ-ack在相同时隙传输,另一个状态表示HARQ-ack在PDSCH所在时隙紧邻的后续时隙中传输。
当DCI采用C-RNTI加扰时,DCI可用与URLLC场景中调度数据,其中时域资源分配和聚合传输联合指示,其域值如下所示:
Identifier for DCI formats(DCI格式标识符):1bit;
Frequency domain resource assignment(频域资源分配):X bit;
Time domain resource assignment&aggregation transmission indication(时域资源分配和聚合传输指示):4bits;
VRB-to-PRB mapping(VRB到PRB的映射):1bit;
Modulation and coding scheme(调制和编码方案):2bits;
New data indicator(新数据指示):1bit;
Redundancy version(冗余版本):1bit;
HARQ process number(HARQ进程数):2bits;
Downlink Assignment Index(下行分配索引):0bit;
TPC command for PUCCH(PUCCH的传输功率控制命令):2bits;
PUCCH resource indicator(PUCCH资源指示):2bits;
PDSCH-to-HARQ feedback timing indicator(PDSCH到HARQ反馈时间指示):1bit;
CRC(循环冗余检查);
其中,PDSCH-to-HARQ_feedback timing indicator为1bit;一个状态表示PDSCH与HARQ-ack在相同slot传输,另一个状态表示HARQ-ack在PDSCH所在slot相邻的后续slot传输。
当DCI采用C-RNTI加扰时,DCI可用与URLLC场景中调度下行链路数据,其中时域资源分配和聚合传输联合指示,其域值如下所示:
Identifier for DCI formats(DCI格式标识符):1bit;
Frequency domain resource assignment(频域资源分配):X bit;
Modulation and coding scheme(调制和编码方案):2bits;
当DCI采用C-RNTI加扰时,DCI可用与URLLC场景中调度上行链路数据,其中时域资源分配和聚合传输联合指示,其域值如下所示:
Identifier for DCI formats(DCI格式标识符):1bit;
Frequency domain resource assignment(频域资源分配):X bit;
Modulation and coding scheme(调制和编码方案):2bits;
本公开上述实施例中的方法,通过在DCI中增加时域资源分配域、调制阶数域和聚合传输指示域中的至少一个,且时域资源分配域、调制阶数域联合指示,或者时域资源分配域和聚合传输指示联合指示,减小了DCI的负载,在有限的资源配置下,从而降低了PDCCH的码率,提高PDCCH的覆盖范围。当DCI用于调度SI/paging,可以提高用于调度SI/paging的DCI的覆盖范围,也可以提高SI/paging频谱效率,同时减小码率。当DCI用于URLLC场景下调度PDSCH/PUSCH传输,可以提高DCI传输的可靠性。
需要说明的是:本公开的上述实施例中,表格中的配置值仅为举例说明,并不包含全部的配置值,且具体配置值的大小也不限于该表格中列出的数值。本公开的上述实施例中,列出DCI的各个域在指示时,采用的具体比特位长度可以不限于是上述实施例中列出的数值,也可以采用其它长度的比特位来指示,或者采用其它指示方式进行指示。
以上实施例分别详细介绍了不同场景下的DCI的传输方法,下面本实施例将结合附图对其对应的装置及设备做进一步介绍。
如图13所示,本公开实施例的下行控制信息DCI的传输装置130,能实现上述所有实施例中所述的DCI的传输方法的细节,并达到相同的效果,该DCI的传输装置130具体包括以下功能模块:
处理模块131,用于确定用于传输下行控制信息DCI的DCI格式,所述DCI格式包括:时域资源分配域、聚合传输指示域、第一指示域或第二指示域,所述第一指示域指示时域资源的配置值和调制阶数的配置值,所述第二指示域指示时域资源的配置值和聚合传输指示的配置值;
收发模块132,用于根据所述DCI格式,传输所述DCI。
该实施例中,所述第一指示域指示的时域资源的配置值包括:时域资源域指示的OFDM符号数目;
所述第一指示域指示的调制阶数的配置值包括:根据时域资源域指示的OFDM符号数目,确定的所述调制阶数。
其中,当K≤n≤N时,根据时域资源域指示的OFDM符号数目确定的所述调制阶数为第一类型编码方式,其中,n为所述时域资源分配指示的 OFDM符号数目,且N≥K,N、K为配置的值或者预配置的固定值。
其中,当N<n≤M时,根据时域资源域指示的OFDM符号数目确定的所述调制阶数为第二类型编码方式,其中,n为所述时域资源分配域指示的OFDM符号数目,且M≥N,N、M为配置的值或者预配置的固定值。
其中,当n>M时,根据时域资源域指示的OFDM符号数目确定的所述调制阶数为第三类型编码方式,其中,n为所述时域资源分配域指示的OFDM符号数目,M为配置的值或者预配置的固定值。
其中,当n=L时,根据时域资源域指示的OFDM符号数目确定的所述调制阶数为第四类型编码方式,其中,n为所述时域资源分配域指示的OFDM符号数目,L为配置的值或者预配置的固定值。
这里的第一类型编码方式、第二类型编码方式、第三类型编码方式、第四类型编码方式分别可以为16QAM、64QAM、QPSK中的一种,当然并不限于这些编码方式。
该实施例中,所述DCI还包括:标志域、频域资源分配域、混合自动重传请求HARQ进程数指示域、冗余版本域、传输块大小指示域以及循环冗余检查域中的至少一个。
本公开的另一具体实施例中,所述时域资源分配域用于指示:第一种配置值;所述第一种配置值是L1种配置值中的一种,所述L1种配置值是时域资源的全部或者部分配置中的L1种;
其中,所述第一种配置值包括:一个PDSCH占用的时域符号长度和一个偏移值,所述偏移值是所述PDSCH相对于控制资源集合的起始OFDM符号或者结束OFDM符号的偏移;L1为配置的值。
其中,所述聚合传输指示域用于指示:第二种配置值;
所述第二种配置值是L2种配置值中的一种,所述L2种配置值是聚合传输指示域的全部或者部分配置中的L2种;
其中,所述第二种配置值包括:一个聚合等级和一个间隔,所述间隔是聚合传输之间的间隔;L2为配置的值。
其中,所述第二指示域指示的时域资源的配置值和聚合传输指示的配置值包括:第三种配置值;
所述第三种配置值是L3种配置值中的一种,所述L3种配置值是时域资源域和聚合传输指示域的全部或者部分配置中的L3种;
其中,所述第三种配置值包括:一个物理下行共享信道占用的时域符号长度、一个偏移值、一个聚合等级和一个聚合传输之间的间隔;L3为配置的值。
该实施例中,所述DCI还包括:DCI格式标识符域、频域资源分配域、虚拟资源块VRB到物理资源块PRB映射域、调制和编码方案域、新数据指示域、冗余版本域、混合自动重传HARQ进程数指示域、下行链路分配索引指示域、物理上行控制信道PUCCH的传输功率控制TPC指示域、PUCCH资源指示域、物理下行共享信道PDSCH到HARQ的反馈时间指示域以及循环冗余检查域中的至少一个。
值得指出的是,本公开实施例的DCI的传输装置采用了和上述方法相同的实现手段,上述方法中的所有实现方式均适用于该装置的实施例中,也能达到相同的技术效果。
为了更好的实现上述目的,如图14所示,本公开的实施例还提供了一种网络设备140,包括:
处理器141,用于确定用于传输下行控制信息DCI的DCI格式,所述DCI格式包括:时域资源分配域、聚合传输指示域、第一指示域或第二指示域,所述第一指示域指示时域资源的配置值和调制阶数的配置值,所述第二指示域指示时域资源的配置值和聚合传输指示的配置值;
收发机,用于根据所述DCI格式,传输所述DCI,具体可以包括天线和射频装置等。
该网络设备还可以进一步包括:天线143、射频装置144、基带装置145。天线143与射频装置144连接。在上行方向上,射频装置144通过天线143接收信息,将接收的信息发送给基带装置145进行处理。在下行方向上,基带装置145对要发送的信息进行处理,并发送给射频装置144,射频装置144对收到的信息进行处理后经过天线143发送出去。
上述DCI的传输装置可以位于基带装置145中,以上实施例中网络设备执行的方法可以在基带装置145中实现,该基带装置145包括处理器141和 存储器142。
基带装置145例如可以包括至少一个基带板,该基带板上设置有多个芯片,如图14所示,其中一个芯片例如为处理器141,与存储器142连接,以调用存储器142中的程序,执行以上方法实施例中所示的操作。
该基带装置145还可以包括网络接口146,用于与射频装置144交互信息,该接口例如为通用公共无线接口(common public radio interface,CPRI)。
这里的处理器可以是一个处理器,也可以是多个处理元件的统称,例如,该处理器可以是CPU,也可以是ASIC,或者是被配置成实施以上网络设备所执行方法的一个或多个集成电路,例如:一个或多个微处理器,一个或多个DSP,或,一个或者多个现场可编程门阵列FPGA等。存储元件可以是一个存储器,也可以是多个存储元件的统称。
存储器142可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器(Electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(Static RAM,SRAM)、动态随机存取存储器(Dynamic RAM,DRAM)、同步动态随机存取存储器(Synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM,DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM,SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM,DRRAM)。本申请描述的存储器142旨在包括但不限于这些和任意其它适合类型的存储器。
本公开的实施例还提供了一种网络设备,该网络设备包括处理器、存储器以及存储于存储器上并可在处理器上运行的计算机程序,处理器执行计算机程序时实现如上所述的DCI的传输方法中的步骤。
本公开实施例的网络设备还包括:存储在存储器上并可在处理器上运行 的计算机程序,处理器调用存储器中的计算机程序执行图13所示各模块执行的方法。
具体地,计算机程序被处理器141调用时可用于执行:如上所述的DCI的传输方法的步骤。
其中,网络设备可以是全球移动通讯(Global System of Mobile communication,GSM)或码分多址(Code Division Multiple Access,CDMA)中的基站(Base Transceiver Station,BTS),也可以是宽带码分多址(Wideband Code Division Multiple Access,WCDMA)中的基站(NodeB,NB),还可以是LTE中的演进型基站(Evolutional Node B,eNB或eNodeB),或者中继站或接入点,或者未来5G网络中的基站等,在此并不限定。
本公开实施例中的网络设备中配置的DCI,当DCI用于调度SI/paging,可以提高用于调度SI/paging的DCI的覆盖范围,也可以提高SI/paging频谱效率,同时减小码率,提高SI/paging的覆盖范围。当DCI用于URLLC场景下调度PDSCH/PUSCH传输,可以提高DCI传输的可靠性。
需要说明的是,应理解以上网络设备和终端的各个模块的划分仅仅是一种逻辑功能的划分,实际实现时可以全部或部分集成到一个物理实体上,也可以物理上分开。且这些模块可以全部以软件通过处理元件调用的形式实现;也可以全部以硬件的形式实现;还可以部分模块通过处理元件调用软件的形式实现,部分模块通过硬件的形式实现。例如,确定模块可以为单独设立的处理元件,也可以集成在上述装置的某一个芯片中实现,此外,也可以以程序代码的形式存储于上述装置的存储器中,由上述装置的某一个处理元件调用并执行以上确定模块的功能。其它模块的实现与之类似。此外这些模块全部或部分可以集成在一起,也可以独立实现。这里所述的处理元件可以是一种集成电路,具有信号的处理能力。在实现过程中,上述方法的各步骤或以上各个模块可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。
例如,以上这些模块可以是被配置成实施以上方法的一个或多个集成电路,例如:一个或多个特定集成电路(Application Specific Integrated Circuit,ASIC),或,一个或多个微处理器,或,一个或多个数字信号处理器(digital  signal processor,DSP),或,一个或者多个现场可编程门阵列(Field Programmable Gate Array,FPGA)等。再如,当以上某个模块通过处理元件调度程序代码的形式实现时,该处理元件可以是通用处理器,例如中央处理器(Central Processing Unit,CPU)或其它可以调用程序代码的处理器。再如,这些模块可以集成在一起,以片上系统(system-on-a-chip,SOC)的形式实现。
所述的计算机可读存储介质,如只读存储器(Read-Only Memory,ROM)、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本公开的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的实施例中,应该理解到,所揭露的装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本公开各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单 元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本公开的技术方案本质上或者说对相关技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
此外,需要指出的是,在本公开的装置和方法中,显然,各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本公开的等效方案。并且,执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行,但是并不需要一定按照时间顺序执行,某些步骤可以并行或彼此独立地执行。对本领域的普通技术人员而言,能够理解本公开的方法和装置的全部或者任何步骤或者部件,可以在任何计算装置(包括处理器、存储介质等)或者计算装置的网络中,以硬件、固件、软件或者它们的组合加以实现,这是本领域普通技术人员在阅读了本公开的说明的情况下运用他们的基本编程技能就能实现的。
因此,本公开的目的还可以通过在任何计算装置上运行一个程序或者一组程序来实现。所述计算装置可以是公知的通用装置。因此,本公开的目的也可以仅仅通过提供包含实现所述方法或者装置的程序代码的程序产品来实现。也就是说,这样的程序产品也构成本公开,并且存储有这样的程序产品的存储介质也构成本公开。显然,所述存储介质可以是任何公知的存储介质或者将来所开发出来的任何存储介质。还需要指出的是,在本公开的装置和方法中,显然,各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本公开的等效方案。并且,执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行,但是并不需要一定按照时间顺序执行。某些步骤可以并行或彼此独立地执行。
以上所述的是本公开的可选实施方式,应当指出对于本技术领域的普通 人员来说,在不脱离本公开所述的原理前提下还可以作出若干改进和润饰,这些改进和润饰也在本公开的保护范围内。

Claims (25)

  1. 一种下行控制信息DCI的传输方法,应用于网络设备,包括:
    确定用于传输下行控制信息DCI的DCI格式,所述DCI格式包括:时域资源分配域、聚合传输指示域、第一指示域或第二指示域,所述第一指示域指示时域资源的配置值和调制阶数的配置值,所述第二指示域指示时域资源的配置值和聚合传输指示的配置值;
    根据所述DCI格式,传输所述DCI。
  2. 根据权利要求1所述的DCI的传输方法,其中,
    所述第一指示域指示的时域资源的配置值包括:时域资源域指示的OFDM符号数目;
    所述第一指示域指示的调制阶数的配置值包括:根据时域资源域指示的OFDM符号数目确定的所述调制阶数。
  3. 根据权利要求2所述的DCI的传输方法,其中,
    当K≤n≤N时,根据时域资源域指示的OFDM符号数目确定的所述调制阶数为第一类型编码方式,其中,n为所述时域资源分配指示的OFDM符号数目,且N≥K,N、K为配置的值或者预配置的固定值。
  4. 根据权利要求2所述的DCI的传输方法,其中,
    当N<n≤M时,根据时域资源域指示的OFDM符号数目确定的所述调制阶数为第二类型编码方式,其中,n为所述时域资源分配域指示的OFDM符号数目,且M≥N,N、M为配置的值或者预配置的固定值。
  5. 根据权利要求2所述的DCI的传输方法,其中,
    当n>M时,根据时域资源域指示的OFDM符号数目确定的所述调制阶数为第三类型编码方式,其中,n为所述时域资源分配域指示的OFDM符号数目,M为配置的值或者预配置的固定值。
  6. 根据权利要求2所述的DCI的传输方法,其中,
    当n=L时,根据时域资源域指示的OFDM符号数目确定的所述调制阶数为第四类型编码方式,其中,n为所述时域资源分配域指示的OFDM符号数目,L为配置的值或者预配置的固定值。
  7. 根据权利要求2-6任一项所述的DCI的传输方法,其中,所述DCI还包括:标志域、频域资源分配域、混合自动重传请求HARQ进程数指示域、冗余版本域、传输块大小指示域以及循环冗余检查域中的至少一个。
  8. 根据权利要求1所述的DCI的传输方法,其中,所述时域资源分配域用于指示:第一种配置值;
    所述第一种配置值是L1种配置值中的一种,所述L1种配置值是时域资源的全部或者部分配置中的L1种;
    其中,所述第一种配置值包括:一个PDSCH占用的时域符号长度和一个偏移值,所述偏移值是所述PDSCH相对于控制资源集合的起始OFDM符号或者结束OFDM符号的偏移;L1为配置的值。
  9. 根据权利要求1所述的DCI的传输方法,其中,所述聚合传输指示域用于指示:第二种配置值;
    所述第二种配置值是L2种配置值中的一种,所述L2种配置值是聚合传输指示域的全部或者部分配置中的L2种;
    其中,所述第二种配置值包括:一个聚合等级和一个间隔,所述间隔是聚合传输之间的间隔;L2为配置的值。
  10. 根据权利要求1所述的DCI的传输方法,其中,所述第二指示域指示的时域资源的配置值和聚合传输指示的配置值包括:第三种配置值;
    所述第三种配置值是L3种配置值中的一种,所述L3种配置值是时域资源域和聚合传输指示域的全部或者部分配置中的L3种;
    其中,所述第三种配置值包括:一个物理下行共享信道占用的时域符号长度、一个偏移值、一个聚合等级和一个聚合传输之间的间隔;L3为配置的值。
  11. 根据权利要求8-10任一项所述的DCI的传输方法,其中,所述DCI还包括:DCI格式标识符域、频域资源分配域、虚拟资源块VRB到物理资源块PRB映射域、调制和编码方案域、新数据指示域、冗余版本域、混合自动重传HARQ进程数指示域、下行链路分配索引指示域、物理上行控制信道PUCCH的传输功率控制TPC指示域、PUCCH资源指示域、物理下行共享信道PDSCH到HARQ的反馈时间指示域以及循环冗余检查域中的至少一个。
  12. 一种下行控制信息DCI的传输装置,应用于网络设备,包括:
    处理模块,用于确定用于传输下行控制信息DCI的DCI格式,所述DCI格式包括:时域资源分配域、聚合传输指示域、第一指示域或第二指示域,所述第一指示域指示时域资源的配置值和调制阶数的配置值,所述第二指示域指示时域资源的配置值和聚合传输指示的配置值;
    收发模块,用于根据所述DCI格式,传输所述DCI。
  13. 根据权利要求12所述的DCI的传输装置,其中,
    所述第一指示域指示的时域资源的配置值包括:时域资源域指示的OFDM符号数目;
    所述第一指示域指示的调制阶数的配置值包括:根据时域资源域指示的OFDM符号数目,确定的所述调制阶数。
  14. 根据权利要求13所述的DCI的传输装置,其中,当K≤n≤N时,根据时域资源域指示的OFDM符号数目确定的所述调制阶数为第一类型编码方式,其中,n为所述时域资源分配指示的OFDM符号数目,且N≥K,N、K为配置的值或者预配置的固定值。
  15. 根据权利要求13所述的DCI的传输装置,其中,
    当N<n≤M时,根据时域资源域指示的OFDM符号数目确定的所述调制阶数为第二类型编码方式,其中,n为所述时域资源分配域指示的OFDM符号数目,且M≥N,N、M为配置的值或者预配置的固定值。
  16. 根据权利要求13所述的DCI的传输装置,其中,当n>M时,根据时域资源域指示的OFDM符号数目确定的所述调制阶数为第三类型编码方式,其中,n为所述时域资源分配域指示的OFDM符号数目,M为配置的值或者预配置的固定值。
  17. 根据权利要求13所述的DCI的传输装置,其中,当n=L时,根据时域资源域指示的OFDM符号数目确定的所述调制阶数为第四类型编码方式,其中,n为所述时域资源分配域指示的OFDM符号数目,L为配置的值或者预配置的固定值。
  18. 根据权利要求13-17任一项所述的DCI的传输装置,其中,所述DCI还包括:标志域、频域资源分配域、混合自动重传请求HARQ进程数指示域、 冗余版本域、传输块大小指示域以及循环冗余检查域中的至少一个。
  19. 根据权利要求12所述的DCI的传输装置,其中,
    所述时域资源分配域用于指示:第一种配置值;
    所述第一种配置值是L1种配置值中的一种,所述L1种配置值是时域资源的全部或者部分配置中的L1种;
    其中,所述第一种配置值包括:一个PDSCH占用的时域符号长度和一个偏移值,所述偏移值是所述PDSCH相对于控制资源集合的起始OFDM符号或者结束OFDM符号的偏移;L1为配置的值。
  20. 根据权利要求12所述的DCI的传输装置,其中,所述聚合传输指示域用于指示:第二种配置值;
    所述第二种配置值是L2种配置值中的一种,所述L2种配置值是聚合传输指示域的全部或者部分配置中的L2种;
    其中,所述第二种配置值包括:一个聚合等级和一个间隔,所述间隔是聚合传输之间的间隔;L2为配置的值。
  21. 根据权利要求12所述的DCI的传输装置,其中,所述第二指示域指示的时域资源的配置值和聚合传输指示的配置值包括:第三种配置值;
    所述第三种配置值是L3种配置值中的一种,所述L3种配置值是时域资源域和聚合传输指示域的全部或者部分配置中的L3种;
    其中,所述第三种配置值包括:一个物理下行共享信道占用的时域符号长度、一个偏移值、一个聚合等级和一个聚合传输之间的间隔;L3为配置的值。
  22. 根据权利要求19-21任一项所述的DCI的传输装置,其中,所述DCI还包括:DCI格式标识符域、频域资源分配域、虚拟资源块VRB到物理资源块PRB映射域、调制和编码方案域、新数据指示域、冗余版本域、混合自动重传HARQ进程数指示域、下行链路分配索引指示域、物理上行控制信道PUCCH的传输功率控制TPC指示域、PUCCH资源指示域、物理下行共享信道PDSCH到HARQ的反馈时间指示域以及循环冗余检查域中的至少一个。
  23. 一种网络设备,包括:
    处理器,用于确定用于传输下行控制信息DCI的DCI格式,所述DCI 格式包括:时域资源分配域、聚合传输指示域、第一指示域或第二指示域,所述第一指示域指示时域资源的配置值和调制阶数的配置值,所述第二指示域指示时域资源的配置值和聚合传输指示的配置值;
    收发机,用于根据所述DCI格式,传输所述DCI。
  24. 一种网络设备,包括处理器、存储器以及存储于所述存储器上并可在所述处理器上运行的计算机程序,所述处理器执行所述计算机程序时实现如权利要求1至11任一项所述的下行控制信息DCI的传输方法的步骤。
  25. 一种计算机可读存储介质,存储有计算机程序,所述计算机程序被处理器执行时实现如权利要求1至11任一项所述的下行控制信息DCI的传输方法的步骤。
PCT/CN2019/073671 2018-02-12 2019-01-29 下行控制信息dci的传输方法、装置及网络设备 WO2019154185A1 (zh)

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US20210007107A1 (en) 2021-01-07
CN110167153A (zh) 2019-08-23
KR20200110787A (ko) 2020-09-25
US11464019B2 (en) 2022-10-04
CN114449666A (zh) 2022-05-06
CN110167153B (zh) 2022-09-13
KR102445177B1 (ko) 2022-09-19
JP7221990B2 (ja) 2023-02-14
EP3755089B1 (en) 2022-10-26
HUE060555T2 (hu) 2023-03-28
EP3755089A4 (en) 2021-03-31
ES2930950T3 (es) 2022-12-22

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