WO2022141007A1 - Signal transmission method and device, base station, terminal, and computer storage medium - Google Patents

Signal transmission method and device, base station, terminal, and computer storage medium Download PDF

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Publication number
WO2022141007A1
WO2022141007A1 PCT/CN2020/140481 CN2020140481W WO2022141007A1 WO 2022141007 A1 WO2022141007 A1 WO 2022141007A1 CN 2020140481 W CN2020140481 W CN 2020140481W WO 2022141007 A1 WO2022141007 A1 WO 2022141007A1
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Prior art keywords
low
sequence
papr
base station
papr sequence
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PCT/CN2020/140481
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French (fr)
Chinese (zh)
Inventor
刘宁
高珂增
张福恩
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海能达通信股份有限公司
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Priority to PCT/CN2020/140481 priority Critical patent/WO2022141007A1/en
Publication of WO2022141007A1 publication Critical patent/WO2022141007A1/en

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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

Definitions

  • the present invention relates to the technical field of communication transmission, and in particular, to a signal transmission method, device, base station, terminal and computer storage medium.
  • the base station transmits the synchronization broadcast block (Synchronization Signal/PBCH Block, SSB) and the control resource set (Control-resource set, CORESET) 0 and the supplementary cell specific reference signal (Additional cell specific reference signal).
  • SSB Synchronization Signal/PBCH Block
  • CORESET Control-resource set
  • Additional CRS is mapped to the corresponding frequency domain resource, and then the corresponding time domain signal is generated for broadcasting.
  • the terminal demodulates the SSB and CORSEST 0, thereby completing the downlink synchronization and the acquisition of the system message.
  • the present application provides a signal transmission method, device, base station, terminal and computer storage medium.
  • the channel can still be performed normally. Estimate, and complete downlink synchronization and acquisition of system messages.
  • a first aspect of the present application provides a signal transmission method, which is applied to a base station, and the signal transmission method includes:
  • the time domain signal including the first Additional CRS is broadcast.
  • the acquiring the synchronous broadcast block SSB of the base station includes:
  • the PSS, the SSS and the PBCH are mapped according to the satellite NR protocol to obtain the SSB of the base station.
  • the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station obtain the first low-peak-to-average power ratio sequence Low-PAPR Sequence, including:
  • Discrete Fourier transform is performed on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station to obtain the first low-peak-to-average power ratio sequence Low-PAPR Sequence.
  • the second Low-PAPR Sequence is obtained, including:
  • Discrete Fourier transform is performed on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station to obtain a second Low-PAPR Sequence.
  • the use of the The first Low-PAPR Sequence and the second Low-PAPR Sequence generate the first Additional CRS, including:
  • the first Additional Sequence is generated by using the first Low-PAPR Sequence and the second Low-PAPR Sequence.
  • CRS including:
  • a second aspect of the present application provides a signal transmission method, which is applied to a terminal, and the signal transmission method includes:
  • the time domain signal includes a first auxiliary cell-specific reference signal Additional CRS; the first Additional CRS uses a first low peak-to-average power ratio sequence Low-PAPR Sequence and a second Low-PAPR Sequence PAPR Sequence generation;
  • the third Low-PAPR Sequence is generated by using the generation method of the first Low-PAPR Sequence in the first Additional CRS, and the signal in the frequency range corresponding to the SSB and the third Low-PAPR Sequence are extracted from the received time domain signal.
  • Three Low-PAPR Sequence completes downlink synchronization;
  • a fourth Low-PAPR Sequence is generated using the generation method of the second Low-PAPR Sequence in the first Additional CRS, and the signal in the CORESET 0 frequency domain range from the received time domain signal and the The fourth Low-PAPR Sequence obtains configuration information required for uplink synchronization.
  • the generation method of the first Low-PAPR Sequence in the first Additional CRS is used to generate the third Low-PAPR Sequence, and the frequency domain corresponding to the SSB is obtained by extracting the received time domain signal.
  • the signals within the range and the third Low-PAPR Sequence complete downlink synchronization, including:
  • the generation method of the second Low-PAPR Sequence in the first Additional CRS is used to generate the fourth Low-PAPR Sequence, and the CORESET 0 frequency domain range in the received time domain signal is used.
  • the signal and the fourth Low-PAPR Sequence obtain the configuration information required for uplink synchronization, including:
  • the target content in the three Low-PAPR Sequences is the overlapping content of the third Low-PAPR Sequence;
  • the system message 1 is obtained, and the configuration information required for synchronization with the uplink is obtained by using the system message 1.
  • a third aspect of the present application provides a signal transmission device, which is applied to a base station, and the signal transmission device includes:
  • a first acquiring unit configured to acquire the synchronous broadcast block SSB of the base station
  • the first generation unit is used to generate the pseudo-random sequence of the Additional CRS of the auxiliary cell exclusive reference signal in the corresponding frequency domain of the SSB of the base station, according to the pseudo-random sequence of the Additional CRS in the corresponding frequency domain of the SSB of the base station, Obtain the first low peak-to-average power ratio sequence Low-PAPR Sequence;
  • the second generating unit is configured to generate a pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the control resource set CORESET 0 of the base station, according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station, Obtain the second Low-PAPR Sequence;
  • a third generating unit configured to generate a first Additional CRS by using the first Low-PAPR Sequence and the second Low-PAPR Sequence;
  • a broadcasting unit configured to broadcast the time domain signal including the first Additional CRS.
  • the first obtaining unit includes:
  • a signal generating unit for generating a primary synchronization signal PSS, a secondary synchronization signal SSS and a physical broadcast channel PBCH;
  • mapping unit configured to map the PSS, the SSS and the PBCH according to the satellite NR protocol to obtain the SSB of the base station.
  • the first generating unit includes:
  • the first discrete Fourier transform unit is configured to perform discrete Fourier transform on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station, to obtain a first low peak-to-average power ratio sequence Low-PAPR Sequence.
  • the second generating unit includes:
  • the second discrete Fourier transform unit is configured to perform discrete Fourier transform on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station to obtain the second Low-PAPR Sequence.
  • the third generation unit for:
  • the third generation unit is used for:
  • a fourth aspect of the present application provides a signal transmission device, which is applied to a terminal, and the signal transmission device includes:
  • a receiving unit configured to receive a time-domain signal broadcast by a base station; wherein, the time-domain signal includes a first auxiliary cell-specific reference signal Additional CRS; the first Additional CRS utilizes a first low peak-to-average power ratio sequence Low-PAPR Sequence and the second Low-PAPR Sequence is generated;
  • the fourth generation unit is used for generating the third Low-PAPR Sequence by using the generation method of the first Low-PAPR Sequence in the first Additional CRS, and using the SSB corresponding frequency domain extracted from the received time domain signal The signal within the range and the third Low-PAPR Sequence complete downlink synchronization;
  • the fifth generation unit is used for generating the fourth Low-PAPR Sequence by adopting the generation mode of the second Low-PAPR Sequence in the first Additional CRS; and using the CORESET 0 frequency domain in the received time domain signal
  • the signal within the range and the fourth Low-PAPR Sequence obtain the configuration information required for uplink synchronization.
  • the fourth generating unit includes:
  • a fourth generating subunit configured to generate a pseudo-random sequence of the synchronous broadcast block SSB of the terminal, and perform discrete Fourier transform on the pseudo-random sequence of the synchronous broadcast block SSB of the terminal to obtain the third Low-PAPR Sequence;
  • the first channel estimation unit is configured to perform channel estimation by using the signal in the frequency domain range corresponding to the SSB obtained from the received time domain signal and the third Low-PAPR Sequence to obtain the channel estimation result, and using The channel estimation result demodulates the physical broadcast channel to obtain the main system information MIB;
  • a downlink synchronization unit configured to complete downlink synchronization according to the MIB.
  • the fifth generating unit includes:
  • a second obtaining unit configured to obtain the configuration information of CORESET 0 of the terminal according to the MIB information
  • the fifth generation subunit is used to generate the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the terminal, and the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the terminal is subjected to discrete Fu. Liye transform to obtain the fourth Low-PAPR Sequence;
  • a replacement unit configured to replace the part that overlaps with the third Low-PAPR Sequence on the fourth Low-PAPR Sequence with the target content of the third Low-PAPR Sequence to obtain a second Additional CRS;
  • the target content in the third Low-PAPR Sequence is the overlapping content of the third Low-PAPR Sequence;
  • a second channel estimation unit configured to perform channel estimation by using the signal in the CORESET 0 frequency domain range from the received time domain signal and the second Additional CRS to obtain the CORESET 0 of the terminal in the frequency domain The frequency domain channel response within the range;
  • a blind detection unit configured to blindly detect downlink control information formats 1-0 in the time-frequency resources of CORESET 0 of the terminal;
  • a third acquiring unit configured to: if the blind detection unit succeeds in blindly detecting the downlink control information format 1-0 in the time-frequency resource of the CORESET 0 of the terminal, then the downlink control information format 1-0 In the physical downlink shared channel PDSCH corresponding to the time-frequency resource indicated in , obtain the system message 1, and use the system message 1 to obtain the configuration information required for synchronization with the uplink.
  • a fifth aspect of the present application provides a base station, including:
  • processors one or more processors
  • the one or more programs when executed by the one or more processors, cause the one or more processors to implement the method of any one of the first aspect.
  • a sixth aspect of the present application provides a terminal, including:
  • processors one or more processors
  • the one or more programs when executed by the one or more processors, cause the one or more processors to implement the method of any one of the second aspect.
  • a seventh aspect of the present application provides a computer storage medium on which a computer program is stored, wherein when the computer program is executed by a processor, the method described in any one of the first aspect, or any of the second aspect, is implemented. one of the methods described.
  • the present application provides a signal transmission method, device, base station, terminal and computer storage medium.
  • the first Additional CRS is generated by using the first Low-PAPR Sequence and the second Low-PAPR Sequence, and the first Low-PAPR Sequence is obtained according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station.
  • the second Low-PAPR Sequence is obtained according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station, therefore, in the case where the lower boundary of the frequency band of the SSB of the base station is located above the lower boundary of the frequency band of the CORESET 0 of the base station , in the frequency domain corresponding to CORESET 0, the starting point of the first Additional CRS is aligned with the lowest sub-carrier of CORESET 0 used for initial access, and the first Additional CRS can be used without knowing the width of the bandwidth.
  • the Additional CRS obtains system messages; in the frequency domain corresponding to the SSB, the starting point of the first Additional CRS is aligned with the lowest subcarrier of the SSB used for initial access, ensuring that the terminal does not know the width of the bandwidth. Downlink synchronization is performed using the first Additional CRS.
  • FIG. 1 is a specific flowchart of a signal transmission method provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of an SSB on an OFDM symbol according to another embodiment of the present application.
  • FIG. 3 is a specific flowchart of a signal transmission method provided by another embodiment of the present application.
  • FIG. 4 is a schematic diagram of a CRS and an Additional CRS on an OFDM symbol provided by another embodiment of the present application;
  • FIG. 5 is a schematic diagram of placing a CRS under different frequency-domain density factors according to another embodiment of the present application.
  • FIG. 6 is a schematic diagram of a mode of multiplexing CORESET 0 and SSB provided by another embodiment of the present application;
  • FIG. 7 is a schematic diagram of obtaining a first Additional CRS when CORESET 0 and SSB overlap, provided by another embodiment of the present application;
  • FIG. 8 is a schematic diagram of obtaining the first Additional CRS when CORESET 0 and SSB do not overlap, provided by another embodiment of the present application;
  • FIG. 9 is a specific flowchart of a signal transmission method provided by another embodiment of the present application.
  • FIG. 11 is a specific flowchart of a signal transmission method provided by another embodiment of the present application.
  • FIG. 12 is a schematic diagram of PAPR distribution in an experimental process provided by another embodiment of the present application.
  • FIG. 13 is a schematic diagram of a signal transmission apparatus applied to a base station according to another embodiment of the present application.
  • FIG. 14 is a schematic diagram of a signal transmission apparatus applied to a terminal provided by another embodiment of the present application.
  • FIG. 15 is a schematic diagram of a fourth generation unit provided by another embodiment of the present application.
  • 16 is a schematic diagram of a fifth generation unit provided by another embodiment of the present application.
  • FIG. 17 is a schematic diagram of a base station for performing a signal transmission method according to another embodiment of the present application.
  • FIG. 18 is a schematic diagram of a terminal for performing a method for transmitting a signal according to another embodiment of the present application.
  • An embodiment of the present application provides a method for transmitting a signal, as shown in FIG. 1 , which specifically includes the following steps:
  • the base station acquires the synchronous broadcast block SSB of the base station.
  • PSS Primary Synchronization Signals
  • SSS Secondary Synchronization Signals
  • PBCH Physical Broadcast Channel
  • the SSB occupies a total of 4 Orthogonal Frequency Division Multiplexing (OFDM) symbols in the time domain, and a total of 240 subcarriers (20 RBs) in the frequency domain.
  • the numbers are from 0 to 239.
  • the PSS is located in the middle 127 subcarriers of OFDM symbol 0.
  • SSS is located in the middle 127 subcarriers of OFDM symbol 2; in order to protect PSS and SSS, different subcarriers are filled with bits 0 at both ends of them.
  • PBCH is located in OFDM symbols 1 and 3, occupying all sub-carriers from 0 to 239.
  • an implementation manner of step S101, as shown in FIG. 3 includes:
  • S301 Generate a primary synchronization signal PSS, a secondary synchronization signal SSS, and a physical broadcast channel PBCH.
  • the SSB of the base station is obtained after the PSS, SSS and PBCH are mapped in a synchronization signal (Synchronization signal, SS/PBCH) block.
  • a synchronization signal Synchronization signal, SS/PBCH
  • the mapping manner can be understood as corresponding to the content of FIG. 2 as described above, the PSS is located in the middle 127 subcarriers of the OFDM symbol 0 .
  • SSS is located in the middle 127 sub-carriers of OFDM symbol 2;
  • PBCH is located in OFDM symbols 1 and 3, occupying all sub-carriers from 0 to 239.
  • the base station generates a pseudo-random sequence of the Additional CRS of the auxiliary cell-specific reference signal in the frequency domain corresponding to the SSB of the base station, and performs discrete Fourier transform on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station to obtain the first A Low-PAPR Sequence.
  • CRS is used for demodulation of physical broadcast channel (Physical broadcast channel, PBCH), PDSCH and physical downlink control channel (Physical downlink control channel, PDCCH), time-frequency synchronization tracking and Doppler frequency shift estimation, channel quality measurement and Beam signal measurement, etc.
  • CRS is divided into conventional CRS and Additional CRS. As shown in FIG. 4 , the generation and mapping of conventional CRS (that is, the reference signal CRS in FIG. 4 ) and the Additional CRS (that is, the auxiliary reference signal CRS in FIG. 4 ) are consistent.
  • the conventional CRS signal is fixed on the OFDM symbol with each slot number 0; the Additional CRS appears on the OFDM symbol with the slot number 7 in the SSB time slot, the purpose is to improve the detection accuracy rate of PBCH .
  • discrete Fourier transform is performed on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station to obtain the first Low-PAPR Sequence.
  • the pseudo-random sequence of the Additional CRS in the frequency domain range obtains an embodiment of the first low-peak-to-average power ratio sequence Low-PAPR Sequence.
  • initialize the PN sequence that is, generate the first value of the PN sequence.
  • the initialization calculation formula of the PN sequence is as follows:
  • C init is the PN sequence
  • i SSB is the two least significant bits (LSB) of the SSB index.
  • L max is the number of SSBs existing in one SSB cycle.
  • the pseudo-random sequence of the auxiliary cell-specific reference signal Additional CRS in the frequency domain corresponding to the SSB of the base station is obtained by calculation.
  • pseudo random (Pseudo-random sequence, PN) sequence generation formula is:
  • r(m) is the last generated PN sequence
  • M CRS is the length of the output sequence r(m)
  • f density is the frequency domain density factor of CRS
  • c refers to c(n); c(n) is defined as:
  • x 1 (n+31) (x 1 (n+3)+x 1 (n))mod2
  • x 2 (n+31) (x 2 (n+3)+x 2 (n+2)+x 2 (n+1)+x 2 (n))mod2
  • discrete Fourier transform is performed on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station to obtain a first low peak-to-average power ratio sequence (Low- In the process of Peak to Average Power Ratio Sequence, Low-PAPR Sequence), the discrete Fourier transform formula used is:
  • the purpose of the discrete Fourier transform is to ensure that the generated sequence maintains single-carrier characteristics.
  • the process of obtaining the first Low-PAPR Sequence in this step can be understood as:
  • N ssb 240/f density .
  • the base station generates a pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the control resource set CORESET 0 of the base station, and performs discrete Fourier transform on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station, to obtain the first Two Low-PAPR Sequence.
  • the frequency domain range corresponding to the control resource set CORESET 0 of the base station may be the same as or different from the frequency domain range corresponding to the SSB of the base station, which is not limited here.
  • the discrete Fourier transform is performed on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station to obtain the second Low-PAPR Sequence, which is a kind of frequency domain corresponding to the CORESET 0 of the base station.
  • the pseudo-random sequence of the Additional CRS within the range obtains an implementation of the second Low-PAPR Sequence.
  • the method of generating the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the control resource set CORESET 0 of the base station, and generating the pseudo-random sequence of the auxiliary cell-specific reference signal Additional CRS in the frequency domain corresponding to the SSB of the base station are calculated by using the preset PN sequence generation formula, which will not be repeated here.
  • the discrete Fourier transform of the pseudo-random sequence of the Additional CRS in the corresponding frequency domain of the SSB is the same, which is calculated by using the preset discrete Fourier transform formula, and will not be repeated here.
  • the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the control resource set CORESET 0 of the base station is obtained by calculating, and using the preset discrete Fourier transform formula,
  • the control resource set CORESET 0 of the base station performs discrete Fourier transform on the pseudo-random sequence of the Additional CRS in the frequency domain to obtain the second Low-PAPR Sequence, namely a cor (0), a cor (1),... , a cor (N cor -1), N cor is the length of the second Low-PAPR Sequence sequence.
  • the time-frequency position of CORESET 0 is indicated by the field 'pdcch-ConfigSIB1' in the MIB. It is assumed that CORESET 0 occupies a total of RB, then
  • mode 1 that is, the lower boundary of the frequency band of the SSB of the base station is located above the lower boundary of the frequency band of the CORESET 0 of the base station.
  • mode 2 the SSB and CORESET 0 do not overlap in the frequency domain, and the SSB may be above or below the CORESET 0.
  • the base station will belong to the second Low-PAPR Sequence and the first one in the second Low-PAPR Sequence.
  • the overlapping content of the Low-PAPR Sequence is replaced with the target content in the first Low-PAPR Sequence to obtain the first Additional CRS.
  • the target content in the first Low-PAPR Sequence is the overlapped content of the first Low-PAPR Sequence.
  • the second Low-PAPR Sequence a cor (0),a cor (1),...,a cor (N cor -1) belong to the first Low-PAPR Sequence, a ssb (0),a ssb (1),..., a ssb (N ssb -1) coincident content, a cor (M),a cor (M+1),...,a(M+N SSB -1) are replaced with the target in the first Low-PAPR Sequence
  • the contents, ie a ssb (0), a ssb (1), . . . , a ssb (N ssb -1) obtain the first Additional CRS.
  • the area outside the frequency domain range of SSB and CORESET 0 also needs to be filled with predetermined values.
  • the base station combines the first Low-PAPR Sequence and the second Low-PAPR Sequence to obtain the first Additional CRS; wherein, the first Additional CRS belongs to the first The region outside the frequency domain range of the Low-PAPR Sequence and the second Low-PAPR Sequence is filled with a predetermined value.
  • the predetermined value may be 0, may also be 1, etc., only to illustrate that the resource element is a resource element other than the first Additional CRS, which is not limited here.
  • the base station broadcasts the time domain signal including the first Additional CRS.
  • an implementation manner of step S105 includes:
  • the first Additional CRS is mapped to the OFDM symbol numbered 7 with the orthogonal frequency division multiplexing technology.
  • the terminal receives the time domain signal broadcast by the base station.
  • the time domain signal includes the first auxiliary cell-specific reference signal Additional CRS; when the lower frequency band boundary of the synchronous broadcast block SSB of the base station is located above the lower frequency band boundary of the control resource set CORESET 0 of the base station, the first Additional CRS adopts the The content in the second Low-PAPR Sequence that overlaps with the first Low-PAPR Sequence is obtained by replacing it with the target content in the first Low-PAPR Sequence; wherein, the content in the first Low-PAPR Sequence The target content is the superimposed content of the first Low-PAPR Sequence.
  • the first Low-PAPR Sequence and the second Low-PAPR Sequence are as shown in the contents of steps S102 and S103.
  • the terminal adopts the generation method of the first Low-PAPR Sequence in the first Additional CRS to generate a third Low-PAPR Sequence, and uses the signal in the corresponding frequency domain range of the SSB and the third Low-PAPR Sequence to be extracted from the received time domain signal.
  • Three Low-PAPR Sequences complete downlink synchronization.
  • the terminal obtains the frequency domain position where the SSB is located by searching in the frequency domain, and obtains the time domain data of the resource blocks occupied by the SSB through filtering; performs PSS search on the obtained time domain data, obtains timing information, and obtains Demodulate the SSS according to the timing information to get to get
  • the terminal and the base station have agreed on the generation method of the Low-PAPR Sequence. Therefore, after receiving the time domain signal, the terminal will also use the agreed generation method to generate a third Low-PAPR Sequence, which is expressed as a ssb (0 ),a ssb (1),...,a ssb (N ssb -1).
  • an implementation manner of step S107, as shown in FIG. 10 includes:
  • the method for generating the third Low-PAPR Sequence reference may be made to the method for generating the first Low-PAPR Sequence in the foregoing embodiment, and the third Low-PAPR Sequence and the first Low-PAPR Sequence are generated in the same manner.
  • the signals Sssb(0), Sssb(1),...Sssb(Nssb-1) and a ssb (0), a ssb (1) in the frequency domain corresponding to the SSB are extracted from the received time domain signal. , .
  • the terminal adopts the generation method of the second Low-PAPR Sequence in the first Additional CRS, generates the fourth Low-PAPR Sequence, and uses the signal in the CORESET 0 frequency domain range from the received time domain signal and the fourth Low-PAPR Sequence.
  • -PAPR Sequence obtains the configuration information required for uplink synchronization.
  • an implementation manner of step S108, as shown in FIG. 11 includes:
  • the time-frequency resource location of CORESET 0 is obtained according to the field 'ssb-SubcarrierOffset' and the field 'pdcch-ConfigSIB1' in the MIB.
  • S1102. Generate a pseudo-random sequence of Additional CRS in the frequency domain corresponding to CORESET 0 of the terminal, and perform discrete Fourier transform on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to CORESET 0 of the terminal to obtain a fourth Low-PAPR Sequence.
  • the target content in the third Low-PAPR Sequence is the overlapped content of the third Low-PAPR Sequence.
  • the second Additional CRS can be expressed as:
  • s [a cor (0),a cor (1),...,a cor (M-1),a ssb (0),a ssb (1),...,a ssb (N ssb -1 ), a cor (M+N ssb ),...,a cor (N cor -1)].
  • the first step is obtained in the manner of step S1103.
  • Two Additional CRS In the case that the SSB of the base station and the CORESET 0 of the base station have no overlapping area in the frequency domain, the fourth Low-PAPR Sequence and the third Low-PAPR Sequence are combined to obtain the second Additional CRS.
  • the second Additional CRS belongs to the region outside the frequency domain range of the third Low-PAPR Sequence and the fourth Low-PAPR Sequence, and is filled with a predetermined value.
  • channel estimation is performed using S and S', and the channel information in the frequency domain range of CORESET 0 is obtained.
  • the subcarrier spacing in the satellite protocol is 120khz, so this simulation specially selects the corresponding table 13-8 in [3, TS 38.213] that the subcarrier spacing for SSB and PDCCH is 120kHz, and selects all 9 kinds of SSB and CORESET in the table.
  • the offset in is the number of RBs occupied by CORESET.
  • the offset is in RB and the direction is from the lower boundary of CORESET to the lower boundary of SSB.
  • the offset is positive, and when the lower boundary of CORESET is located at the lower boundary of SSB Above, the offset is negative, and when the lower boundary of CORESET coincides with the lower boundary of SSB, the offset is 0.
  • the Old curve in Figure 12 refers to the PAPR distribution of the Additional CRS in the existing satellite NR protocol; the NewCase0 to NewCase8 curves are the PAPR distribution of the Additional CRS obtained according to the method of the present invention, respectively corresponding to the 9 of the SSB and CORESET in the above table. kind of relative position.
  • the method of the present invention can significantly reduce the PAPR of the Additional CRS.
  • the first Additional CRS is generated by using the first Low-PAPR Sequence and the second Low-PAPR Sequence, and the first Low-PAPR Sequence is based on the SSB of the base station.
  • the pseudo-random sequence of the Additional CRS in the corresponding frequency domain is obtained, and the second Low-PAPR Sequence is obtained according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station.
  • the lower boundary of the frequency band of the SSB of the base station is located at In the case that the base station's CORESET 0 is above the lower boundary of the frequency band, in the frequency domain range corresponding to CORESET 0, the starting point of the first Additional CRS is aligned with the lowest sub-carrier of CORESET 0 used for initial access. In the case of the width of the bandwidth, the first Additional CRS is used to obtain the system message; in the frequency domain range corresponding to the SSB, the starting point of the first Additional CRS is aligned with the lowest sub-carrier of the SSB used for initial access , to ensure that the terminal uses the first Additional CRS to perform downlink synchronization without knowing the width of the bandwidth.
  • the signal transmission apparatus specifically includes:
  • the first obtaining unit 1301 is configured to obtain the synchronous broadcast block SSB of the base station.
  • an implementation manner of the first obtaining unit 1301 includes:
  • the signal generating unit is used for generating the primary synchronization signal PSS, the secondary synchronization signal SSS and the physical broadcast channel PBCH.
  • the mapping unit is used for mapping the PSS, SSS and PBCH according to the satellite NR protocol to obtain the SSB of the base station.
  • the first generating unit 1302 is used to generate the pseudo-random sequence of the auxiliary cell-specific reference signal Additional CRS in the frequency domain corresponding to the SSB of the base station, and obtain the first according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station.
  • Low-PAPR Sequence is used to generate the pseudo-random sequence of the auxiliary cell-specific reference signal Additional CRS in the frequency domain corresponding to the SSB of the base station.
  • an implementation manner of the first generating unit 1302 includes:
  • the first discrete Fourier transform unit is used to perform discrete Fourier transform on the pseudo-random sequence of the Additional CRS in the frequency domain range corresponding to the SSB of the base station, to obtain a first low peak-to-average power ratio sequence Low-PAPR Sequence.
  • the second generating unit 1303 is configured to generate a pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the control resource set CORESET 0 of the base station, and obtain the second pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station Low-PAPR Sequence.
  • an implementation manner of the second generating unit 1303 includes:
  • the second discrete Fourier transform unit is used to perform discrete Fourier transform on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station to obtain the second Low-PAPR Sequence.
  • the third generating unit 1304 is configured to generate the first Additional CRS by using the first Low-PAPR Sequence and the second Low-PAPR Sequence.
  • the broadcasting unit 1305 is configured to broadcast the time domain signal including the first Additional CRS.
  • the third generation unit for:
  • the target content in the first Low-PAPR Sequence is the overlapped content of the first Low-PAPR Sequence.
  • the third generating unit is used for:
  • the first Low-PAPR Sequence and the second Low-PAPR Sequence are combined to obtain the first Additional CRS.
  • the first Additional CRS belongs to the region outside the frequency domain range of the first Low-PAPR Sequence and the second Low-PAPR Sequence, and is filled with a predetermined value.
  • a signal transmission device applied to a base station obtains the synchronous broadcast block SSB of the base station through the first obtaining unit 1301, and then the first generating unit 1302 generates the SSB of the base station within the corresponding frequency domain range.
  • the pseudo-random sequence of the auxiliary cell-specific reference signal Additional CRS according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station, the first low peak-to-average power ratio sequence Low-PAPR Sequence is obtained.
  • the second generating unit 1303 generates a pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the control resource set CORESET 0 of the base station, and obtains the second Low-PAPR according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station Sequence.
  • the third generating unit 1304 uses the first Low-PAPR Sequence and the second Low-PAPR Sequence to generate the first Additional CRS.
  • the broadcasting unit 1305 broadcasts the time domain signal including the first Additional CRS.
  • the starting point of the first Additional CRS is the same as the CORESET used for initial access.
  • the lowest subcarrier alignment of 0 can use the first Additional CRS to obtain system messages without knowing the width of the bandwidth; in the frequency domain corresponding to the SSB, the starting point of the first Additional CRS and the Aligning the lowest subcarrier of the SSB initially accessed to ensure that the terminal uses the first Additional CRS to perform downlink synchronization without knowing the width of the bandwidth.
  • the signal transmission device specifically includes:
  • the receiving unit 1401 is configured to receive the time domain signal broadcast by the base station.
  • the time domain signal includes the first auxiliary cell-specific reference signal Additional CRS; the first Additional CRS is generated by using the first low peak-to-average power ratio sequence Low-PAPR Sequence and the second Low-PAPR Sequence.
  • the fourth generation unit 1402 is used to adopt the generation mode of the first Low-PAPR Sequence in the first Additional CRS, to generate the third Low-PAPR Sequence, and to extract the SSB corresponding frequency domain from the received time domain signal.
  • the signal and the third Low-PAPR Sequence complete downlink synchronization.
  • an implementation manner of the fourth generating unit 1402, as shown in FIG. 15 includes:
  • the fourth generation subunit 1501 is used to generate a pseudo-random sequence of the synchronous broadcast block SSB of the terminal, and perform discrete Fourier transform on the pseudo-random sequence of the synchronous broadcast block SSB of the terminal to obtain a third Low-PAPR Sequence.
  • the first channel estimation unit 1502 is used to perform channel estimation using the signal in the frequency domain corresponding to the SSB obtained from the received time domain signal and the third Low-PAPR Sequence to obtain a channel estimation result, and demodulate using the channel estimation result Physical broadcast channel, get the main system information MIB.
  • the downlink synchronization unit 1503 is configured to complete downlink synchronization according to the MIB.
  • the fifth generation unit 1403 is used to generate the fourth Low-PAPR Sequence by using the generation mode of the second Low-PAPR Sequence in the first Additional CRS; and utilize the CORESET 0 frequency domain from the received time domain signal.
  • the signal and the fourth Low-PAPR Sequence obtain configuration information required for uplink synchronization.
  • an implementation manner of the fifth generating unit 1403, as shown in FIG. 16 includes:
  • the second obtaining unit 1601 is configured to obtain the configuration information of CORESET 0 of the terminal according to the MIB information.
  • the fifth generation subunit 1602 is used to generate the pseudo-random sequence of the Additional CRS in the corresponding frequency domain of the terminal's CORESET 0, and the pseudo-random sequence of the Additional CRS in the corresponding frequency domain of the terminal's CORESET 0 is subjected to discrete Fourier transform , the fourth Low-PAPR Sequence is obtained.
  • the replacement unit 1603 is configured to replace the part of the fourth Low-PAPR Sequence that overlaps with the third Low-PAPR Sequence sequence with the target content of the third Low-PAPR Sequence to obtain a second Additional CRS.
  • the target content in the third Low-PAPR Sequence is the overlapped content of the third Low-PAPR Sequence.
  • the second channel estimation unit 1604 is configured to perform channel estimation using the signal in the CORESET 0 frequency domain range from the received time domain signal and the second Additional CRS to obtain the frequency domain channel response of the terminal's CORESET 0 in the frequency domain range .
  • the blind detection unit 1605 is configured to blindly detect the downlink control information format 1-0 in the time-frequency resource of CORESET 0 of the terminal.
  • the third acquiring unit 1606 is configured to, if the blind detection unit 1605 succeeds in blindly detecting the downlink control information format 1-0 in the time-frequency resources of the CORESET 0 of the terminal, then the time-frequency resources indicated in the downlink control information format 1-0 In the corresponding physical downlink shared channel PDSCH, the system message 1 is obtained, and the configuration information required for synchronization with the uplink is obtained by using the system message 1.
  • a signal transmission device applied to a terminal provided by the present application receives a time domain signal broadcast by a base station through the receiving unit 1401 .
  • the time domain signal includes the first auxiliary cell-specific reference signal Additional CRS; the first Additional CRS is generated by using the first low peak-to-average power ratio sequence Low-PAPR Sequence and the second Low-PAPR Sequence.
  • the fourth generation unit 1402 adopts the generation method of the first Low-PAPR Sequence in the first Additional CRS to generate the third Low-PAPR Sequence, and uses the signal in the frequency domain corresponding to the SSB to be extracted from the received time domain signal. Complete downlink synchronization with the third Low-PAPR Sequence.
  • the fifth generation unit 1403 adopts the generation method of the second Low-PAPR Sequence in the first Additional CRS to generate the fourth Low-PAPR Sequence; and utilizes the signal in the CORESET 0 frequency domain range from the received time domain signal and the fourth Low-PAPR Sequence to obtain configuration information required for uplink synchronization. In order to achieve the purpose of ensuring that the terminal uses the first Additional CRS to perform downlink synchronization without knowing the width of the bandwidth.
  • FIG. 17 Another embodiment of the present application provides a base station, as shown in FIG. 17 , including:
  • Storage device 1702 on which one or more programs are stored.
  • the one or more processors 1701 When the one or more programs are executed by the one or more processors 1701, the one or more processors 1701 are caused to implement the method as steps S101-S105 in the above embodiments.
  • FIG. 18 Another embodiment of the present application provides a terminal, as shown in FIG. 18 , including:
  • a storage device 1802 having one or more programs stored thereon.
  • the one or more processors 1801 When the one or more programs are executed by the one or more processors 1801, the one or more processors 1801 are caused to implement the method as steps S106-S108 in the above embodiments.
  • Another embodiment of the present application provides a computer storage medium on which a computer program is stored, wherein when the computer program is executed by a processor, the method described in any one of the foregoing embodiments is implemented.
  • each block in the flowchart or block diagrams may represent a module, segment, or portion of code that contains one or more functions for implementing the specified logical function(s) executable instructions. It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures.
  • each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations can be implemented in dedicated hardware-based systems that perform the specified functions or actions , or can be implemented in a combination of dedicated hardware and computer instructions.
  • each functional module in each embodiment of the present disclosure may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.
  • the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the computer software products are stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a live broadcast device, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present disclosure.
  • the aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .

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Abstract

The present application provides a signal transmission method and device, a base station, a terminal, and a computer storage medium. The method comprises: acquiring an SSB; generating a pseudo-random sequence of an additional CRS, and obtaining a first low peak-to-average power ratio (PAPR) sequence; similarly, generating a second low PAPR sequence of a CORESET 0; and generating a first additional CRS by using the first low PAPR sequence and the second low PAPR sequence, and broadcasting a time domain signal comprising the first additional CRS.

Description

信号的传输方法、装置、基站、终端及计算机存储介质Signal transmission method, device, base station, terminal and computer storage medium 技术领域technical field
本发明涉及通信传输技术领域，特别涉及一种信号的传输方法、装置、基站、终端及计算机存储介质。The present invention relates to the technical field of communication transmission, and in particular, to a signal transmission method, device, base station, terminal and computer storage medium.
背景技术Background technique
目前，在现有的卫星协议中，基站通过将同步广播块(Synchronization Signal/PBCH Block，SSB)和控制资源集合(Control-resource set，CORESET)0以及辅助小区专属参考信号(Additional cell specific reference signal，Additional CRS)映射至相应的频域资源后，生成对应的时域信号进行广播。终端在接收到包含Additional CRS对应的时域信号后，解调SSB和CORSEST 0，从而完成下行同步和***消息的获取。At present, in the existing satellite protocol, the base station transmits the synchronization broadcast block (Synchronization Signal/PBCH Block, SSB) and the control resource set (Control-resource set, CORESET) 0 and the supplementary cell specific reference signal (Additional cell specific reference signal). , Additional CRS) is mapped to the corresponding frequency domain resource, and then the corresponding time domain signal is generated for broadcasting. After receiving the time domain signal corresponding to the Additional CRS, the terminal demodulates the SSB and CORSEST 0, thereby completing the downlink synchronization and the acquisition of the system message.
但是，在实际的应用过程中，当SSB的频带下边界位于CORESET 0的频带下边界的上方时，由于不知道部分***带宽的宽度，因此，无法得知SSB的频带下边界以下区域内的Additional CRS的原始数据，故而无法进行信道估计，从而影响SSB和CORESET 0的解调，进而不能完成下行同步以及***消息的获取。However, in the actual application process, when the lower frequency band boundary of SSB is located above the lower frequency band boundary of CORESET 0, since the width of part of the system bandwidth is unknown, it is impossible to know the Additional in the area below the lower frequency band boundary of SSB. The original data of the CRS cannot be used for channel estimation, which affects the demodulation of SSB and CORESET 0, and thus cannot complete downlink synchronization and acquisition of system messages.
发明内容SUMMARY OF THE INVENTION
基于上述现有技术的问题，本申请提供一种信号的传输方法、装置、基站、终端及计算机存储介质，当SSB的频带下边界位于CORESET 0的频带下边界的上方时，依旧可以正常进行信道估计，并完成下行同步以及***消息的获取。Based on the above-mentioned problems in the prior art, the present application provides a signal transmission method, device, base station, terminal and computer storage medium. When the lower boundary of the frequency band of the SSB is located above the lower boundary of the frequency band of CORESET 0, the channel can still be performed normally. Estimate, and complete downlink synchronization and acquisition of system messages.
本申请第一方面提供了一种信号的传输方法，应用于基站，所述信号的传输方法，包括：A first aspect of the present application provides a signal transmission method, which is applied to a base station, and the signal transmission method includes:
获取基站的同步广播块SSB；Obtain the synchronous broadcast block SSB of the base station;
生成所述基站的SSB对应频域范围内的辅助小区专属参考信号Additional CRS的伪随机序列，根据所述基站的SSB对应频域范围内的Additional CRS的伪随机序列，得到第一低峰均值功率比序列Low-PAPR Sequence；Generate a pseudo-random sequence of the auxiliary cell-specific reference signal Additional CRS in the corresponding frequency domain of the SSB of the base station, and obtain the first low peak-average power according to the pseudo-random sequence of the Additional CRS in the corresponding frequency domain of the SSB of the base station Compare the sequence Low-PAPR Sequence;
生成所述基站的控制资源集合CORESET 0对应频域范围内的 Additional CRS的伪随机序列，根据所述基站的CORESET 0对应频域范围内的Additional CRS的伪随机序列，得到第二Low-PAPR Sequence；Generate a pseudo-random sequence of Additional CRS in the frequency domain corresponding to the control resource set CORESET 0 of the base station, and obtain a second Low-PAPR Sequence according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to CORESET 0 of the base station ;
利用所述第一Low-PAPR Sequence和所述第二Low-PAPR Sequence，生成第一Additional CRS；Using the first Low-PAPR Sequence and the second Low-PAPR Sequence to generate a first Additional CRS;
将包含所述第一Additional CRS的时域信号进行广播。The time domain signal including the first Additional CRS is broadcast.
可选的，所述获取基站的同步广播块SSB，包括：Optionally, the acquiring the synchronous broadcast block SSB of the base station includes:
生成主同步信号PSS、辅同步信号SSS和物理广播信道PBCH；Generate the primary synchronization signal PSS, the secondary synchronization signal SSS and the physical broadcast channel PBCH;
按照卫星NR协议对所述PSS、所述SSS和所述PBCH进行映射，得到所述基站的SSB。The PSS, the SSS and the PBCH are mapped according to the satellite NR protocol to obtain the SSB of the base station.
可选的，所述根据所述基站的SSB对应频域范围内的Additional CRS的伪随机序列，得到第一低峰均值功率比序列Low-PAPR Sequence，包括：Optionally, according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station, obtain the first low-peak-to-average power ratio sequence Low-PAPR Sequence, including:
将所述基站的SSB对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到第一低峰均值功率比序列Low-PAPR Sequence。Discrete Fourier transform is performed on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station to obtain the first low-peak-to-average power ratio sequence Low-PAPR Sequence.
可选的，所述根据所述基站的CORESET 0对应频域范围内的Additional CRS的伪随机序列，得到第二Low-PAPR Sequence，包括：Optionally, according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station, the second Low-PAPR Sequence is obtained, including:
将所述基站的CORESET 0对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到第二Low-PAPR Sequence。Discrete Fourier transform is performed on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station to obtain a second Low-PAPR Sequence.
可选的，若所述基站的SSB的频带下边界位于所述基站的CORESET 0的频带下边界的上方，且所述基站的SSB和所述基站的CORESET 0有重合区域，所述利用所述第一Low-PAPR Sequence和所述第二Low-PAPR Sequence，生成第一Additional CRS，包括：Optionally, if the lower boundary of the frequency band of the SSB of the base station is located above the lower boundary of the frequency band of the CORESET 0 of the base station, and the SSB of the base station and the CORESET 0 of the base station have an overlapping area, the use of the The first Low-PAPR Sequence and the second Low-PAPR Sequence generate the first Additional CRS, including:
将所述第二Low-PAPR Sequence中属于与所述第一Low-PAPR Sequence重合的内容，替换为所述第一Low-PAPR Sequence中的目标内容，得到所述第一Additional CRS；其中，所述第一Low-PAPR Sequence中的目标内容为所述第一Low-PAPR Sequence被重合的内容。Replace the content that overlaps with the first Low-PAPR Sequence in the second Low-PAPR Sequence with the target content in the first Low-PAPR Sequence to obtain the first Additional CRS; wherein, the The target content in the first Low-PAPR Sequence is the overlapped content of the first Low-PAPR Sequence.
可选的，若所述基站的SSB和所述基站的CORESET 0在频域上没有重合区域，所述利用所述第一Low-PAPR Sequence和所述第二Low-PAPR Sequence，生成第一Additional CRS，包括：Optionally, if the SSB of the base station and the CORESET 0 of the base station have no overlapping area in the frequency domain, the first Additional Sequence is generated by using the first Low-PAPR Sequence and the second Low-PAPR Sequence. CRS, including:
组合所述第一Low-PAPR Sequence和所述第二Low-PAPR Sequence，得到所述第一Additional CRS；其中，所述第一Additional CRS中属于所述第一Low-PAPR Sequence和所述第二Low-PAPR Sequence频域范围外区域，填 充有预定数值。Combining the first Low-PAPR Sequence and the second Low-PAPR Sequence to obtain the first Additional CRS; wherein the first Additional CRS belongs to the first Low-PAPR Sequence and the second Low-PAPR Sequence Low-PAPR Sequence The area outside the frequency domain range is filled with a predetermined value.
本申请第二方面提供了一种信号的传输方法，应用于终端，所述信号的传输方法，包括：A second aspect of the present application provides a signal transmission method, which is applied to a terminal, and the signal transmission method includes:
接收基站广播的时域信号；其中，所述时域信号包括第一辅助小区专属参考信号Additional CRS；所述第一Additional CRS利用第一低峰均值功率比序列Low-PAPR Sequence和第二Low-PAPR Sequence生成；Receive a time domain signal broadcast by a base station; wherein, the time domain signal includes a first auxiliary cell-specific reference signal Additional CRS; the first Additional CRS uses a first low peak-to-average power ratio sequence Low-PAPR Sequence and a second Low-PAPR Sequence PAPR Sequence generation;
采用所述第一Additional CRS中的第一Low-PAPR Sequence的生成方式，生成第三Low-PAPR Sequence，利用从接收的所述时域信号中提取得到SSB对应频率范围内的信号和所述第三Low-PAPR Sequence完成下行同步；The third Low-PAPR Sequence is generated by using the generation method of the first Low-PAPR Sequence in the first Additional CRS, and the signal in the frequency range corresponding to the SSB and the third Low-PAPR Sequence are extracted from the received time domain signal. Three Low-PAPR Sequence completes downlink synchronization;
采用所述第一Additional CRS中的第二Low-PAPR Sequence的生成方式，生成第四Low-PAPR Sequence，并利用从接收的所述时域信号中的CORESET 0频域范围内的信号和所述第四Low-PAPR Sequence获取上行同步所需的配置信息。A fourth Low-PAPR Sequence is generated using the generation method of the second Low-PAPR Sequence in the first Additional CRS, and the signal in the CORESET 0 frequency domain range from the received time domain signal and the The fourth Low-PAPR Sequence obtains configuration information required for uplink synchronization.
可选的，所述采用所述第一Additional CRS中的第一Low-PAPR Sequence的生成方式，生成第三Low-PAPR Sequence，并利用从接收的所述时域信号中提取得到SSB对应频域范围内的信号和所述第三Low-PAPR Sequence完成下行同步，包括：Optionally, the generation method of the first Low-PAPR Sequence in the first Additional CRS is used to generate the third Low-PAPR Sequence, and the frequency domain corresponding to the SSB is obtained by extracting the received time domain signal. The signals within the range and the third Low-PAPR Sequence complete downlink synchronization, including:
生成所述终端的同步广播块SSB的伪随机序列，将所述终端的同步广播块SSB的伪随机序列进行离散傅里叶变换，得到所述第三Low-PAPR Sequence；generating a pseudo-random sequence of the synchronous broadcast block SSB of the terminal, and performing discrete Fourier transform on the pseudo-random sequence of the synchronous broadcast block SSB of the terminal to obtain the third Low-PAPR Sequence;
利用所述从接收的所述时域信号中提取得到SSB对应频域范围内的信号和所述第三Low-PAPR Sequence进行信道估计，得到信道估计结果，并利用所述信道估计结果解调物理广播信道，得到主***信息MIB；Use the signal in the frequency domain corresponding to the SSB extracted from the received time domain signal and the third Low-PAPR Sequence to perform channel estimation to obtain a channel estimation result, and use the channel estimation result to demodulate the physical Broadcast channel, get the main system information MIB;
根据所述MIB完成下行同步。Downlink synchronization is completed according to the MIB.
可选的，所述采用所述第一Additional CRS中的第二Low-PAPR Sequence的生成方式，生成第四Low-PAPR Sequence，并利用从接收的所述时域信号中的CORESET 0频域范围内的信号和所述第四Low-PAPR Sequence获取上行同步所需的配置信息，包括：Optionally, the generation method of the second Low-PAPR Sequence in the first Additional CRS is used to generate the fourth Low-PAPR Sequence, and the CORESET 0 frequency domain range in the received time domain signal is used. The signal and the fourth Low-PAPR Sequence obtain the configuration information required for uplink synchronization, including:
根据所述MIB信息，获取所述终端的CORESET 0的配置信息；According to the MIB information, obtain the configuration information of the CORESET 0 of the terminal;
生成所述终端的CORESET 0对应频域范围内的Additional CRS的伪随 机序列，将所述终端的CORESET 0对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到第四Low-PAPR Sequence；Generate a pseudo-random sequence of Additional CRS in the frequency domain corresponding to CORESET 0 of the terminal, perform discrete Fourier transform on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to CORESET 0 of the terminal, and obtain the fourth Low -PAPR Sequence;
将所述第四Low-PAPR Sequence上属于与所述第三Low-PAPR Sequence序列相重合的部分替换为所述第三Low-PAPR Sequence的目标内容，得到第二Additional CRS；其中，所述第三Low-PAPR Sequence中的目标内容为所述第三Low-PAPR Sequence被重合的内容；Replace the part of the fourth Low-PAPR Sequence that overlaps with the third Low-PAPR Sequence with the target content of the third Low-PAPR Sequence to obtain a second Additional CRS; The target content in the three Low-PAPR Sequences is the overlapping content of the third Low-PAPR Sequence;
利用所述从接收的所述时域信号中的CORESET 0频域范围内的信号和所述第二Additional CRS进行信道估计，得到所述终端的CORESET 0在频域范围内的频域信道响应；Perform channel estimation by using the signal in the CORESET 0 frequency domain range and the second Additional CRS received from the time domain signal to obtain the frequency domain channel response of the CORESET 0 of the terminal in the frequency domain range;
在所述终端的CORESET 0的时频资源中，盲检下行控制信息格式1-0；In the time-frequency resource of CORESET 0 of the terminal, blindly detect downlink control information format 1-0;
若在所述终端的CORESET 0的时频资源中，盲检所述下行控制信息格式1-0成功，则在所述下行控制信息格式1-0中指示的时频资源对应的物理下行共享信道PDSCH中，获取所述***消息1，并利用所述***消息1获取与上行同步所需的配置信息。If the blind detection of the downlink control information format 1-0 is successful in the time-frequency resource of CORESET 0 of the terminal, the physical downlink shared channel corresponding to the time-frequency resource indicated in the downlink control information format 1-0 In the PDSCH, the system message 1 is obtained, and the configuration information required for synchronization with the uplink is obtained by using the system message 1.
本申请第三方面提供了一种信号的传输装置，应用于基站，所述信号的传输装置，包括：A third aspect of the present application provides a signal transmission device, which is applied to a base station, and the signal transmission device includes:
第一获取单元，用于获取基站的同步广播块SSB；a first acquiring unit, configured to acquire the synchronous broadcast block SSB of the base station;
第一生成单元，用于生成所述基站的SSB对应频域范围内的辅助小区专属参考信号Additional CRS的伪随机序列，根据所述基站的SSB对应频域范围内的Additional CRS的伪随机序列，得到第一低峰均值功率比序列Low-PAPR Sequence；The first generation unit is used to generate the pseudo-random sequence of the Additional CRS of the auxiliary cell exclusive reference signal in the corresponding frequency domain of the SSB of the base station, according to the pseudo-random sequence of the Additional CRS in the corresponding frequency domain of the SSB of the base station, Obtain the first low peak-to-average power ratio sequence Low-PAPR Sequence;
第二生成单元，用于生成所述基站的控制资源集合CORESET 0对应频域范围内的Additional CRS的伪随机序列，根据所述基站的CORESET 0对应频域范围内的Additional CRS的伪随机序列，得到第二Low-PAPR Sequence；The second generating unit is configured to generate a pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the control resource set CORESET 0 of the base station, according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station, Obtain the second Low-PAPR Sequence;
第三生成单元，用于利用所述第一Low-PAPR Sequence和所述第二Low-PAPR Sequence，生成第一Additional CRS；a third generating unit, configured to generate a first Additional CRS by using the first Low-PAPR Sequence and the second Low-PAPR Sequence;
广播单元，用于将包含所述第一Additional CRS的时域信号进行广播。A broadcasting unit, configured to broadcast the time domain signal including the first Additional CRS.
可选的，所述第一获取单元，包括：Optionally, the first obtaining unit includes:
信号生成单元，用于生成主同步信号PSS、辅同步信号SSS和物理广播信道PBCH；a signal generating unit for generating a primary synchronization signal PSS, a secondary synchronization signal SSS and a physical broadcast channel PBCH;
映射单元，用于按照卫星NR协议对所述PSS、所述SSS和所述PBCH进行映射，得到所述基站的SSB。a mapping unit, configured to map the PSS, the SSS and the PBCH according to the satellite NR protocol to obtain the SSB of the base station.
可选的，所述第一生成单元，包括：Optionally, the first generating unit includes:
第一离散傅里叶变换单元，用于将所述基站的SSB对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到第一低峰均值功率比序列Low-PAPR Sequence。The first discrete Fourier transform unit is configured to perform discrete Fourier transform on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station, to obtain a first low peak-to-average power ratio sequence Low-PAPR Sequence.
可选的，所述第二生成单元，包括：Optionally, the second generating unit includes:
第二离散傅里叶变换单元，用于将所述基站的CORESET 0对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到第二Low-PAPR Sequence。The second discrete Fourier transform unit is configured to perform discrete Fourier transform on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station to obtain the second Low-PAPR Sequence.
可选的，若所述基站的SSB的频带下边界位于所述基站的CORESET 0的频带下边界的上方，且所述基站的SSB和所述基站的CORESET 0有重合区域，所述第三生成单元，用于：Optionally, if the lower boundary of the frequency band of the SSB of the base station is located above the lower boundary of the frequency band of the CORESET 0 of the base station, and the SSB of the base station and the CORESET 0 of the base station have an overlapping area, the third generation unit for:
将所述第二Low-PAPR Sequence中属于与所述第一Low-PAPR Sequence重合的内容，替换为所述第一Low-PAPR Sequence中的目标内容，得到所述第一Additional CRS；其中，所述第一Low-PAPR Sequence中的目标内容为所述第一Low-PAPR Sequence被重合的内容。Replace the content that overlaps with the first Low-PAPR Sequence in the second Low-PAPR Sequence with the target content in the first Low-PAPR Sequence to obtain the first Additional CRS; wherein, the The target content in the first Low-PAPR Sequence is the overlapped content of the first Low-PAPR Sequence.
可选的，若所述基站的SSB和所述基站的CORESET 0在频域上没有重合区域，所述第三生成单元，用于：Optionally, if the SSB of the base station and the CORESET 0 of the base station have no overlapping area in the frequency domain, the third generation unit is used for:
组合所述第一Low-PAPR Sequence和所述第二Low-PAPR Sequence，得到所述第一Additional CRS；其中，所述第一Additional CRS中属于所述第一Low-PAPR Sequence和所述第二Low-PAPR Sequence频域范围外区域，填充有预定数值。Combining the first Low-PAPR Sequence and the second Low-PAPR Sequence to obtain the first Additional CRS; wherein the first Additional CRS belongs to the first Low-PAPR Sequence and the second Low-PAPR Sequence Low-PAPR Sequence The area outside the frequency domain range is filled with a predetermined value.
本申请第四方面提供了一种信号的传输装置，应用于终端，所述信号的传输装置，包括：A fourth aspect of the present application provides a signal transmission device, which is applied to a terminal, and the signal transmission device includes:
接收单元，用于接收基站广播的时域信号；其中，所述时域信号包括第一辅助小区专属参考信号Additional CRS；所述第一Additional CRS利用第一低峰均值功率比序列Low-PAPR Sequence和第二Low-PAPR Sequence生成；a receiving unit, configured to receive a time-domain signal broadcast by a base station; wherein, the time-domain signal includes a first auxiliary cell-specific reference signal Additional CRS; the first Additional CRS utilizes a first low peak-to-average power ratio sequence Low-PAPR Sequence and the second Low-PAPR Sequence is generated;
第四生成单元，用于采用所述第一Additional CRS中的第一Low-PAPR Sequence的生成方式，生成第三Low-PAPR Sequence，利用从接收的所述 时域信号中提取得到SSB对应频域范围内的信号和所述第三Low-PAPR Sequence完成下行同步；The fourth generation unit is used for generating the third Low-PAPR Sequence by using the generation method of the first Low-PAPR Sequence in the first Additional CRS, and using the SSB corresponding frequency domain extracted from the received time domain signal The signal within the range and the third Low-PAPR Sequence complete downlink synchronization;
第五生成单元，用于采用所述第一Additional CRS中的第二Low-PAPR Sequence的生成方式，生成第四Low-PAPR Sequence；并利用从接收的所述时域信号中的CORESET 0频域范围内的信号和所述第四Low-PAPR Sequence获取上行同步所需的配置信息。The fifth generation unit is used for generating the fourth Low-PAPR Sequence by adopting the generation mode of the second Low-PAPR Sequence in the first Additional CRS; and using the CORESET 0 frequency domain in the received time domain signal The signal within the range and the fourth Low-PAPR Sequence obtain the configuration information required for uplink synchronization.
可选的，所述第四生成单元，包括：Optionally, the fourth generating unit includes:
第四生成子单元，用于生成所述终端的同步广播块SSB的伪随机序列，将所述终端的同步广播块SSB的伪随机序列进行离散傅里叶变换，得到所述第三Low-PAPR Sequence；a fourth generating subunit, configured to generate a pseudo-random sequence of the synchronous broadcast block SSB of the terminal, and perform discrete Fourier transform on the pseudo-random sequence of the synchronous broadcast block SSB of the terminal to obtain the third Low-PAPR Sequence;
第一信道估计单元，用于利用所述从接收的所述时域信号中提取得到SSB对应频域范围内的信号和所述第三Low-PAPR Sequence进行信道估计，得到信道估计结果，并利用所述信道估计结果解调物理广播信道，得到主***信息MIB；The first channel estimation unit is configured to perform channel estimation by using the signal in the frequency domain range corresponding to the SSB obtained from the received time domain signal and the third Low-PAPR Sequence to obtain the channel estimation result, and using The channel estimation result demodulates the physical broadcast channel to obtain the main system information MIB;
下行同步单元，用于根据所述MIB完成下行同步。A downlink synchronization unit, configured to complete downlink synchronization according to the MIB.
可选的，所述第五生成单元，包括：Optionally, the fifth generating unit includes:
第二获取单元，用于根据所述MIB信息，获取所述终端的CORESET 0的配置信息；A second obtaining unit, configured to obtain the configuration information of CORESET 0 of the terminal according to the MIB information;
第五生成子单元，用于生成所述终端的CORESET 0对应频域范围内的Additional CRS的伪随机序列，将所述终端的CORESET 0对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到所述第四Low-PAPR Sequence；The fifth generation subunit is used to generate the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the terminal, and the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the terminal is subjected to discrete Fu. Liye transform to obtain the fourth Low-PAPR Sequence;
替换单元，用于将所述第四Low-PAPR Sequence上属于与所述第三Low-PAPR Sequence序列相重合的部分替换为所述第三Low-PAPR Sequence的目标内容，得到第二Additional CRS；其中，所述第三Low-PAPR Sequence中的目标内容为所述第三Low-PAPR Sequence被重合的内容；A replacement unit, configured to replace the part that overlaps with the third Low-PAPR Sequence on the fourth Low-PAPR Sequence with the target content of the third Low-PAPR Sequence to obtain a second Additional CRS; Wherein, the target content in the third Low-PAPR Sequence is the overlapping content of the third Low-PAPR Sequence;
第二信道估计单元，用于利用所述从接收的所述时域信号中的CORESET 0频域范围内的信号和所述第二Additional CRS进行信道估计，得到所述终端的CORESET 0在频域范围内的频域信道响应；A second channel estimation unit, configured to perform channel estimation by using the signal in the CORESET 0 frequency domain range from the received time domain signal and the second Additional CRS to obtain the CORESET 0 of the terminal in the frequency domain The frequency domain channel response within the range;
盲检单元，用于在所述终端的CORESET 0的时频资源中，盲检下行控制信息格式1-0；a blind detection unit, configured to blindly detect downlink control information formats 1-0 in the time-frequency resources of CORESET 0 of the terminal;
第三获取单元，用于若所述盲检单元在所述终端的CORESET 0的时频资源中，盲检所述下行控制信息格式1-0成功，则在所述下行控制信息格式1-0中指示的时频资源对应的物理下行共享信道PDSCH中，获取所述***消息1，并利用所述***消息1获取与上行同步所需的配置信息。a third acquiring unit, configured to: if the blind detection unit succeeds in blindly detecting the downlink control information format 1-0 in the time-frequency resource of the CORESET 0 of the terminal, then the downlink control information format 1-0 In the physical downlink shared channel PDSCH corresponding to the time-frequency resource indicated in , obtain the system message 1, and use the system message 1 to obtain the configuration information required for synchronization with the uplink.
本申请第五方面提供了一种基站，包括：A fifth aspect of the present application provides a base station, including:
一个或多个处理器；one or more processors;
存储装置，其上存储有一个或多个程序；a storage device on which one or more programs are stored;
当所述一个或多个程序被所述一个或多个处理器执行时，使得所述一个或多个处理器实现如第一方面任意一项所述的方法。The one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method of any one of the first aspect.
本申请第六方面提供了一种终端，包括：A sixth aspect of the present application provides a terminal, including:
一个或多个处理器；one or more processors;
存储装置，其上存储有一个或多个程序；a storage device on which one or more programs are stored;
当所述一个或多个程序被所述一个或多个处理器执行时，使得所述一个或多个处理器实现如第二方面任意一项所述的方法。The one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method of any one of the second aspect.
本申请第七方面提供了一种计算机存储介质，其上存储有计算机程序，其中，所述计算机程序被处理器执行时实现如第一方面任意一项所述的方法，或者如第二方面任意一项所述的方法。A seventh aspect of the present application provides a computer storage medium on which a computer program is stored, wherein when the computer program is executed by a processor, the method described in any one of the first aspect, or any of the second aspect, is implemented. one of the methods described.
本申请提供一种信号的传输方法、装置、基站、终端及计算机存储介质。该方法中，由于利用第一Low-PAPR Sequence和第二Low-PAPR Sequence，生成第一Additional CRS，且第一Low-PAPR Sequence根据基站的SSB对应频域范围内的Additional CRS的伪随机序列得到，第二Low-PAPR Sequence根据基站的CORESET 0对应频域范围内的Additional CRS的伪随机序列得到，因此，在基站的SSB的频带下边界位于基站的CORESET 0的频带下边界的上方的情况下，在CORESET 0对应的频域范围内，第一Additional CRS的起始点与用于初始接入的CORESET 0的最低子载波对齐，可以在不知道带宽的宽度的情况下的情况下，利用第一Additional CRS进行***消息的获取；在SSB对应的频域范围内，第一Additional CRS的起始点与用于初始接入的SSB的最低子载波对齐，确保终端在不知道带宽的宽度的情况下，利用第一Additional CRS进行下行同步。The present application provides a signal transmission method, device, base station, terminal and computer storage medium. In this method, the first Additional CRS is generated by using the first Low-PAPR Sequence and the second Low-PAPR Sequence, and the first Low-PAPR Sequence is obtained according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station. , the second Low-PAPR Sequence is obtained according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station, therefore, in the case where the lower boundary of the frequency band of the SSB of the base station is located above the lower boundary of the frequency band of the CORESET 0 of the base station , in the frequency domain corresponding to CORESET 0, the starting point of the first Additional CRS is aligned with the lowest sub-carrier of CORESET 0 used for initial access, and the first Additional CRS can be used without knowing the width of the bandwidth. The Additional CRS obtains system messages; in the frequency domain corresponding to the SSB, the starting point of the first Additional CRS is aligned with the lowest subcarrier of the SSB used for initial access, ensuring that the terminal does not know the width of the bandwidth. Downlink synchronization is performed using the first Additional CRS.
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，而可依照说明书的内容予以实施，并且为了让本发明的上述和其它目的、特征和优点能够更明显易懂，以下特举本发明的具体实施方式。The above description is only an overview of the technical solutions of the present invention, in order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand , the following specific embodiments of the present invention are given.
附图说明Description of drawings
通过阅读下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本发明的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are for the purpose of illustrating preferred embodiments only and are not to be considered limiting of the invention. Also, the same components are denoted by the same reference numerals throughout the drawings. In the attached image:
图1为本申请实施例提供的一种信号的传输方法的具体流程图；FIG. 1 is a specific flowchart of a signal transmission method provided by an embodiment of the present application;
图2为本申请另一实施例提供的一种SSB在OFDM符号上的示意图；FIG. 2 is a schematic diagram of an SSB on an OFDM symbol according to another embodiment of the present application;
图3为本申请另一实施例提供的一种信号的传输方法的具体流程图；FIG. 3 is a specific flowchart of a signal transmission method provided by another embodiment of the present application;
图4为本申请另一实施例提供的一种CRS和Additional CRS在OFDM符号上的示意图；4 is a schematic diagram of a CRS and an Additional CRS on an OFDM symbol provided by another embodiment of the present application;
图5为本申请另一实施例提供的一种CRS在不同频域密度因子的情况下进行放置的示意图；5 is a schematic diagram of placing a CRS under different frequency-domain density factors according to another embodiment of the present application;
图6为本申请另一实施例提供的一种CORESET 0和SSB复用的模式的示意图；6 is a schematic diagram of a mode of multiplexing CORESET 0 and SSB provided by another embodiment of the present application;
图7为本申请另一实施例提供的一种在CORESET 0和SSB有重合的情况下，得到第一Additional CRS的示意图；7 is a schematic diagram of obtaining a first Additional CRS when CORESET 0 and SSB overlap, provided by another embodiment of the present application;
图8为本申请另一实施例提供的一种在CORESET 0和SSB没有重合的情况下，得到第一Additional CRS的示意图；8 is a schematic diagram of obtaining the first Additional CRS when CORESET 0 and SSB do not overlap, provided by another embodiment of the present application;
图9为本申请另一实施例提供的一种信号的传输方法的具体流程图；FIG. 9 is a specific flowchart of a signal transmission method provided by another embodiment of the present application;
图10为本申请另一实施例提供的一种信号的传输方法的具体流程图；10 is a specific flowchart of a signal transmission method provided by another embodiment of the present application;
图11为本申请另一实施例提供的一种信号的传输方法的具体流程图；11 is a specific flowchart of a signal transmission method provided by another embodiment of the present application;
图12为本申请另一实施例提供的一种实验过程中PAPR分布的示意图；12 is a schematic diagram of PAPR distribution in an experimental process provided by another embodiment of the present application;
图13为本申请另一实施例提供的一种应用于基站的信号的传输装置的示意图；13 is a schematic diagram of a signal transmission apparatus applied to a base station according to another embodiment of the present application;
图14为本申请另一实施例提供的一种应用于终端的信号的传输装置 的示意图；14 is a schematic diagram of a signal transmission apparatus applied to a terminal provided by another embodiment of the present application;
图15为本申请另一实施例提供的一种第四生成单元的示意图；15 is a schematic diagram of a fourth generation unit provided by another embodiment of the present application;
图16为本申请另一实施例提供的一种第五生成单元的示意图；16 is a schematic diagram of a fifth generation unit provided by another embodiment of the present application;
图17为本申请另一实施例提供的一种用于执行信号的传输方法的基站的示意图；FIG. 17 is a schematic diagram of a base station for performing a signal transmission method according to another embodiment of the present application;
图18为本申请另一实施例提供的一种用于执行信号的传输方法的终端的示意图。FIG. 18 is a schematic diagram of a terminal for performing a method for transmitting a signal according to another embodiment of the present application.
具体实施方式Detailed ways
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。Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be more thoroughly understood, and will fully convey the scope of the present disclosure to those skilled in the art.
本申请实施例提供了一种信号的传输方法，如图1所示，具体包括以下步骤：An embodiment of the present application provides a method for transmitting a signal, as shown in FIG. 1 , which specifically includes the following steps:
S101、基站获取基站的同步广播块SSB。S101. The base station acquires the synchronous broadcast block SSB of the base station.
其中，SSB是由主同步信号(Primary Synchronization Signals，PSS)、辅同步信号(Secondary Synchronization Signals，SSS)、物理广播信道(Physical broadcast channel，PBCH)三部分共同组成。Among them, SSB is composed of three parts: Primary Synchronization Signals (PSS), Secondary Synchronization Signals (SSS), and Physical Broadcast Channel (PBCH).
需要说明的是，如图2所示，SSB在时域上共占用4个正交频分复用技术(Orthogonal Frequency Division Multiplexing，OFDM)符号，频域共占用240个子载波(20个RB)，编号为0～239。PSS位于OFDM符号0的中间127个子载波。SSS位于OFDM符号2的中间127个子载波；为了保护PSS、SSS，它们的两端分别有不同的子载波填充比特0。PBCH位于OFDM符号1、3，占0～239所有子载波。It should be noted that, as shown in Figure 2, the SSB occupies a total of 4 Orthogonal Frequency Division Multiplexing (OFDM) symbols in the time domain, and a total of 240 subcarriers (20 RBs) in the frequency domain. The numbers are from 0 to 239. The PSS is located in the middle 127 subcarriers of OFDM symbol 0. SSS is located in the middle 127 subcarriers of OFDM symbol 2; in order to protect PSS and SSS, different subcarriers are filled with bits 0 at both ends of them. PBCH is located in OFDM symbols 1 and 3, occupying all sub-carriers from 0 to 239.
可选的，在本申请的另一实施例中，步骤S101的一种实施方式，如图3所示，包括：Optionally, in another embodiment of the present application, an implementation manner of step S101, as shown in FIG. 3 , includes:
S301、生成主同步信号PSS、辅同步信号SSS和物理广播信道PBCH。S301. Generate a primary synchronization signal PSS, a secondary synchronization signal SSS, and a physical broadcast channel PBCH.
S302、按照卫星NR协议对PSS、SSS和PBCH进行映射，得到基站的SSB。S302. Map the PSS, SSS, and PBCH according to the satellite NR protocol to obtain the SSB of the base station.
其中，在同步信号(Synchronization signal，SS/PBCH)块内映射PSS、SSS和PBCH后，得到基站的SSB。具体的，映射的方式可以理解成如上述对应图2的内容，PSS位于OFDM符号0的中间127个子载波。SSS位于OFDM符号2的中间127个子载波；PBCH位于OFDM符号1、3，占0～239所有子载波。The SSB of the base station is obtained after the PSS, SSS and PBCH are mapped in a synchronization signal (Synchronization signal, SS/PBCH) block. Specifically, the mapping manner can be understood as corresponding to the content of FIG. 2 as described above, the PSS is located in the middle 127 subcarriers of the OFDM symbol 0 . SSS is located in the middle 127 sub-carriers of OFDM symbol 2; PBCH is located in OFDM symbols 1 and 3, occupying all sub-carriers from 0 to 239.
S102、基站生成基站的SSB对应频域范围内的辅助小区专属参考信号Additional CRS的伪随机序列，将基站的SSB对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到第一低峰均值功率比序列Low-PAPR Sequence。S102. The base station generates a pseudo-random sequence of the Additional CRS of the auxiliary cell-specific reference signal in the frequency domain corresponding to the SSB of the base station, and performs discrete Fourier transform on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station to obtain the first A Low-PAPR Sequence.
其中，CRS用于物理广播信道(Physical broadcast channel，PBCH)、PDSCH和物理下行控制信道(Physical downlink control channel，PDCCH)的解调、时频同步追踪和多普勒频移估计、信道质量测量和波束信号测量等。CRS分为常规CRS和Additional CRS，如图4所示，常规CRS(即图4中的参考信号CRS)和Additional CRS(即图4中的辅助参考信号CRS)的生成和映射是一致的。常规CRS信号，固定在每个时隙编号为0的OFDM符号上；Additional CRS在SSB的时隙中，出现在一个时隙编号为7的OFDM符号上，目的是用于提高PBCH的检测正确率。Among them, CRS is used for demodulation of physical broadcast channel (Physical broadcast channel, PBCH), PDSCH and physical downlink control channel (Physical downlink control channel, PDCCH), time-frequency synchronization tracking and Doppler frequency shift estimation, channel quality measurement and Beam signal measurement, etc. CRS is divided into conventional CRS and Additional CRS. As shown in FIG. 4 , the generation and mapping of conventional CRS (that is, the reference signal CRS in FIG. 4 ) and the Additional CRS (that is, the auxiliary reference signal CRS in FIG. 4 ) are consistent. The conventional CRS signal is fixed on the OFDM symbol with each slot number 0; the Additional CRS appears on the OFDM symbol with the slot number 7 in the SSB time slot, the purpose is to improve the detection accuracy rate of PBCH .
需要说明的是，将基站的SSB对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到第一低峰均值功率比序列Low-PAPR Sequence，是一种根据基站的SSB对应频域范围内的Additional CRS的伪随机序列，得到第一低峰均值功率比序列Low-PAPR Sequence的实施方式。It should be noted that discrete Fourier transform is performed on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station to obtain the first Low-PAPR Sequence. The pseudo-random sequence of the Additional CRS in the frequency domain range obtains an embodiment of the first low-peak-to-average power ratio sequence Low-PAPR Sequence.
首先，对PN序列进行初始化，即生成PN序列的第一个值，PN序列的初始化计算公式如下：First, initialize the PN sequence, that is, generate the first value of the PN sequence. The initialization calculation formula of the PN sequence is as follows:
Figure PCTCN2020140481-appb-000001
Figure PCTCN2020140481-appb-000001
其中，
Figure PCTCN2020140481-appb-000002
是小区ID。
Figure PCTCN2020140481-appb-000003
的含义与NR相同，当L max＝4时，
Figure PCTCN2020140481-appb-000004
n hf是半帧指示，当PBCH在一个帧中的前半帧中传输时，n hf＝0，当PBCH在一个帧中的后半帧中传输时，n hf＝1；C init为PN序列的第一个值；i SSB是SSB索引的两位最低有效位(least significant bit，LSB)。当L max＝8或L max＝64时，
Figure PCTCN2020140481-appb-000005
i SSB是SSB索引的三位LSB。L max是一个SSB周期 内存在的SSB个数。 in,
Figure PCTCN2020140481-appb-000002
is the cell ID.
Figure PCTCN2020140481-appb-000003
The meaning is the same as NR, when L max =4,
Figure PCTCN2020140481-appb-000004
n hf is a half frame indication, when PBCH is transmitted in the first half of a frame, n hf =0, when PBCH is transmitted in the second half of a frame, n hf =1; C init is the PN sequence The first value; i SSB is the two least significant bits (LSB) of the SSB index. When L max =8 or L max =64,
Figure PCTCN2020140481-appb-000005
i SSB is the three-bit LSB of the SSB index. L max is the number of SSBs existing in one SSB cycle.
然后，利用预设的Additional CRS的伪随机序列生成公式，计算得到基站的SSB对应频域范围内的辅助小区专属参考信号Additional CRS的伪随机序列。Then, using the preset pseudo-random sequence generation formula of the Additional CRS, the pseudo-random sequence of the auxiliary cell-specific reference signal Additional CRS in the frequency domain corresponding to the SSB of the base station is obtained by calculation.
其中，伪随机(Pseudo-random sequence，PN)序列生成公式为：Among them, the pseudo random (Pseudo-random sequence, PN) sequence generation formula is:
Figure PCTCN2020140481-appb-000006
Figure PCTCN2020140481-appb-000006
r(m)为最后生成的PN序列；M CRS为输出序列r(m)的长度，
Figure PCTCN2020140481-appb-000007
f density是CRS的频域密度因子；
Figure PCTCN2020140481-appb-000008
是频率范围内的资源元素(Resource Element，RE)的个数；j是复数的虚数表示,与j相乘的数值表示复数的虚部；如图5所示，当f density＝1时，CRS是无间隔放置的；当f density＝2时，CRS是间隔1个资源元素(Resource Element，RE)放置一个。 r(m) is the last generated PN sequence; M CRS is the length of the output sequence r(m),
Figure PCTCN2020140481-appb-000007
f density is the frequency domain density factor of CRS;
Figure PCTCN2020140481-appb-000008
is the number of resource elements (Resource Element, RE) in the frequency range; j is the imaginary representation of the complex number, and the value multiplied by j represents the imaginary part of the complex number; as shown in Figure 5, when f density = 1, CRS It is placed without interval; when f density = 2, the CRS is placed at an interval of 1 resource element (Resource Element, RE).
上述公式中，c指代c(n)；c(n)被定义为：In the above formula, c refers to c(n); c(n) is defined as:
c(n)＝(x 1(n+N C)+x 2(n+N C))mod2 c(n)=(x 1 (n+ NC )+x 2 (n+ NC ))mod2
x 1(n+31)＝(x 1(n+3)+x 1(n))mod2 x 1 (n+31)=(x 1 (n+3)+x 1 (n))mod2
x 2(n+31)＝(x 2(n+3)+x 2(n+2)+x 2(n+1)+x 2(n))mod2 x 2 (n+31)=(x 2 (n+3)+x 2 (n+2)+x 2 (n+1)+x 2 (n))mod2
当N C＝1600，x 1(n)被初始化为x 1(0)＝1,x 1(n)＝0,n＝1,2,...,30，x 2(n)被表示为
Figure PCTCN2020140481-appb-000009
When NC = 1600, x 1 (n) is initialized as x 1 (0)=1, x 1 (n)=0, n=1, 2, . . . , 30, and x 2 (n) is expressed as
Figure PCTCN2020140481-appb-000009
本步骤中，利用预设的离散傅里叶变换公式，对基站的SSB对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到第一低峰均值功率比序列(Low-Peak to Average Power Ratio Sequence，Low-PAPR Sequence)的过程中，所采用的离散傅里叶变换公式为：In this step, using a preset discrete Fourier transform formula, discrete Fourier transform is performed on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station to obtain a first low peak-to-average power ratio sequence (Low- In the process of Peak to Average Power Ratio Sequence, Low-PAPR Sequence), the discrete Fourier transform formula used is:
Figure PCTCN2020140481-appb-000010
Figure PCTCN2020140481-appb-000010
需要说明的是，离散傅里叶变换的目的是，确保生成的序列保持单载波特性。It should be noted that the purpose of the discrete Fourier transform is to ensure that the generated sequence maintains single-carrier characteristics.
本步骤得到第一Low-PAPR Sequence的过程可以理解为：The process of obtaining the first Low-PAPR Sequence in this step can be understood as:
按照上述PN序列的生成公式，生成N ssb点的PN序列r(m)，m＝0,1,...,N ssb-1后，再利用上述离散傅里叶变换公式对m＝0,1,...,N ssb-1做N ssb点的离散傅里叶变换，得到第一Low-PAPR Sequence，即a ssb(0),a ssb(1),...,a ssb(N ssb-1)。 According to the generation formula of the above PN sequence, generate the PN sequence r(m) of N ssb points, m=0,1,...,N ssb -1, and then use the above discrete Fourier transform formula for m=0, 1,...,N ssb -1 do the discrete Fourier transform of N ssb points to obtain the first Low-PAPR Sequence, namely a ssb (0),a ssb (1),...,a ssb (N ssb -1).
并且，由于SSB的带宽是固定的，共有240个RE，即20个资源块(Resource Block，RB)，所以N ssb＝240/f density。 Furthermore, since the bandwidth of the SSB is fixed, there are 240 REs in total, that is, 20 resource blocks (Resource Block, RB), so N ssb =240/f density .
S103、基站生成基站的控制资源集合CORESET 0对应频域范围内的Additional CRS的伪随机序列，将基站的CORESET 0对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到第二Low-PAPR Sequence。S103, the base station generates a pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the control resource set CORESET 0 of the base station, and performs discrete Fourier transform on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station, to obtain the first Two Low-PAPR Sequence.
其中，基站的控制资源集合CORESET 0对应频域范围和基站的SSB对应频域范围可以一样，也可以不一样，此处不做限定。The frequency domain range corresponding to the control resource set CORESET 0 of the base station may be the same as or different from the frequency domain range corresponding to the SSB of the base station, which is not limited here.
需要说明的是，将基站的CORESET 0对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到第二Low-PAPR Sequence，是一种根据所述基站的CORESET 0对应频域范围内的Additional CRS的伪随机序列，得到第二Low-PAPR Sequence的实施方式。It should be noted that the discrete Fourier transform is performed on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station to obtain the second Low-PAPR Sequence, which is a kind of frequency domain corresponding to the CORESET 0 of the base station. The pseudo-random sequence of the Additional CRS within the range, obtains an implementation of the second Low-PAPR Sequence.
需要说明的是，生成基站的控制资源集合CORESET 0对应频域范围内的Additional CRS的伪随机序列，与生成基站的SSB对应频域范围内的辅助小区专属参考信号Additional CRS的伪随机序列的方式相同，都是采用预设的PN序列生成公式，进行计算得到，此处不再赘述；将基站的CORESET 0对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，与将基站的SSB对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换的方式相同，都是采用预设的离散傅里叶变换公式计算得到，此处不再赘述。It should be noted that the method of generating the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the control resource set CORESET 0 of the base station, and generating the pseudo-random sequence of the auxiliary cell-specific reference signal Additional CRS in the frequency domain corresponding to the SSB of the base station The same, both are calculated by using the preset PN sequence generation formula, which will not be repeated here. The discrete Fourier transform of the pseudo-random sequence of the Additional CRS in the corresponding frequency domain of the SSB is the same, which is calculated by using the preset discrete Fourier transform formula, and will not be repeated here.
具体的，利用预设的Additional CRS的伪随机序列生成公式，计算得到 基站的控制资源集合CORESET 0对应频域范围内的Additional CRS的伪随机序列，利用预设的离散傅里叶变换公式，对基站的控制资源集合CORESET 0对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到第二Low-PAPR Sequence，即a cor(0),a cor(1),...,a cor(N cor-1)，N cor是第二Low-PAPR Sequence序列长度，需要说明的是，CORESET 0的时频位置由MIB中的字段‘pdcch-ConfigSIB1’指示，假设CORESET 0共占据
Figure PCTCN2020140481-appb-000011
个RB，则
Figure PCTCN2020140481-appb-000012
Specifically, by using the preset pseudo-random sequence generation formula of the Additional CRS, the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the control resource set CORESET 0 of the base station is obtained by calculating, and using the preset discrete Fourier transform formula, The control resource set CORESET 0 of the base station performs discrete Fourier transform on the pseudo-random sequence of the Additional CRS in the frequency domain to obtain the second Low-PAPR Sequence, namely a cor (0), a cor (1),... , a cor (N cor -1), N cor is the length of the second Low-PAPR Sequence sequence. It should be noted that the time-frequency position of CORESET 0 is indicated by the field 'pdcch-ConfigSIB1' in the MIB. It is assumed that CORESET 0 occupies a total of
Figure PCTCN2020140481-appb-000011
RB, then
Figure PCTCN2020140481-appb-000012
S104、利用第一Low-PAPR Sequence和第二Low-PAPR Sequence，生成第一Additional CRS。S104. Generate a first Additional CRS by using the first Low-PAPR Sequence and the second Low-PAPR Sequence.
需要说明的是，如图6所示，CORESET 0和SSB复用的模式有3种，分别为模式1、模式2和模式3。模式1中，即基站的SSB的频带下边界位于基站的CORESET 0的频带下边界的上方。模式2和模式3中，SSB与CORESET 0在频域上不重叠，其中，SSB有可能在CORESET 0的上方或下方。It should be noted that, as shown in Figure 6, there are three modes of multiplexing between CORESET 0 and SSB, namely mode 1, mode 2 and mode 3. In mode 1, that is, the lower boundary of the frequency band of the SSB of the base station is located above the lower boundary of the frequency band of the CORESET 0 of the base station. In Mode 2 and Mode 3, the SSB and CORESET 0 do not overlap in the frequency domain, and the SSB may be above or below the CORESET 0.
若基站的SSB的频带下边界位于基站的CORESET 0的频带下边界的上方且基站的SSB和基站的CORESET 0在频域上有重合区域，则基站将第二Low-PAPR Sequence中属于与第一Low-PAPR Sequence重合的内容，替换为第一Low-PAPR Sequence中的目标内容，得到第一Additional CRS。其中，第一Low-PAPR Sequence中的目标内容为第一Low-PAPR Sequence被重合的内容。If the lower boundary of the frequency band of the SSB of the base station is located above the lower boundary of the frequency band of the CORESET 0 of the base station and the SSB of the base station and the CORESET 0 of the base station have an overlapping area in the frequency domain, the base station will belong to the second Low-PAPR Sequence and the first one in the second Low-PAPR Sequence. The overlapping content of the Low-PAPR Sequence is replaced with the target content in the first Low-PAPR Sequence to obtain the first Additional CRS. Wherein, the target content in the first Low-PAPR Sequence is the overlapped content of the first Low-PAPR Sequence.
具体的，如图7所示，在基站的SSB的频带下边界位于基站的CORESET 0的频带下边界的上方，且SSB与CORESET 0具有重合部分的情况下，则将第二Low-PAPR Sequence，a cor(0),a cor(1),...,a cor(N cor-1)中属于与第一Low-PAPR Sequence，a ssb(0),a ssb(1),...,a ssb(N ssb-1)重合的内容，a cor(M),a cor(M+1),...,a(M+N SSB-1)替换为第一Low-PAPR Sequence中的目标内容，即a ssb(0),a ssb(1),...,a ssb(N ssb-1)，得到第一Additional CRS。 Specifically, as shown in FIG. 7 , when the lower frequency band boundary of the SSB of the base station is located above the lower frequency band boundary of the CORESET 0 of the base station, and the SSB and CORESET 0 have overlapping parts, the second Low-PAPR Sequence, a cor (0),a cor (1),...,a cor (N cor -1) belong to the first Low-PAPR Sequence,a ssb (0),a ssb (1),..., a ssb (N ssb -1) coincident content, a cor (M),a cor (M+1),...,a(M+N SSB -1) are replaced with the target in the first Low-PAPR Sequence The contents, ie a ssb (0), a ssb (1), . . . , a ssb (N ssb -1), obtain the first Additional CRS.
当然，在第一Additional CRS中，在SSB和CORESET 0频域范围之外的区域，也需要填充预定数值。Of course, in the first Additional CRS, the area outside the frequency domain range of SSB and CORESET 0 also needs to be filled with predetermined values.
若基站的SSB和基站的CORESET 0在频域上没有重合区域，则基站 组合第一Low-PAPR Sequence和第二Low-PAPR Sequence，得到第一Additional CRS；其中，第一Additional CRS中属于第一Low-PAPR Sequence和第二Low-PAPR Sequence频域范围外区域，填充有预定数值。If the SSB of the base station and the CORESET 0 of the base station have no overlapping area in the frequency domain, the base station combines the first Low-PAPR Sequence and the second Low-PAPR Sequence to obtain the first Additional CRS; wherein, the first Additional CRS belongs to the first The region outside the frequency domain range of the Low-PAPR Sequence and the second Low-PAPR Sequence is filled with a predetermined value.
具体的，如图8所示，在CORESET 0和SSB没有重合的情况下，直接将第一Low-PAPR Sequence和第二Low-PAPR Sequence之外的部分填充为预定数值后，得到第一Additional CRS。Specifically, as shown in FIG. 8 , in the case where CORESET 0 and SSB do not overlap, directly fill the part other than the first Low-PAPR Sequence and the second Low-PAPR Sequence with a predetermined value to obtain the first Additional CRS .
需要说明的是，预定数值可以是0、也可以是以1等，只是为了说明此资源元素为在第一Additional CRS之外的资源元素，此处不做限定。It should be noted that the predetermined value may be 0, may also be 1, etc., only to illustrate that the resource element is a resource element other than the first Additional CRS, which is not limited here.
S105、基站将包含第一Additional CRS的时域信号进行广播。S105, the base station broadcasts the time domain signal including the first Additional CRS.
可选的，在本申请的另一实施例中，步骤S105的一种实施方式，如图9所示，包括：Optionally, in another embodiment of the present application, an implementation manner of step S105, as shown in FIG. 9 , includes:
S901、将第一Additional CRS映射至正交频分复用技术OFDM的符号上。S901. Map the first Additional CRS to the symbol of the orthogonal frequency division multiplexing technology OFDM.
具体的，根据现有卫星NR协议将第一Additional CRS映射至编号为7的正交频分复用技术OFDM的符号上。Specifically, according to the existing satellite NR protocol, the first Additional CRS is mapped to the OFDM symbol numbered 7 with the orthogonal frequency division multiplexing technology.
S902、将OFDM的符号上第一Additional CRS之外的资源元素填充为预定数值，得到待调制的OFDM的符号。S902. Fill the resource elements other than the first Additional CRS on the OFDM symbol with a predetermined value to obtain the OFDM symbol to be modulated.
S903、将待调制的OFDM的符号进行快速傅里叶逆转换，得到时域信号，并广播时域信号。S903. Perform inverse fast Fourier transform on the OFDM symbol to be modulated to obtain a time-domain signal, and broadcast the time-domain signal.
S106、终端接收基站广播的时域信号。S106. The terminal receives the time domain signal broadcast by the base station.
其中，时域信号包括第一辅助小区专属参考信号Additional CRS；在基站的同步广播块SSB的频带下边界位于基站的控制资源集合CORESET 0的频带下边界的上方时，第一Additional CRS采用将第二低峰均值功率比序列Low-PAPR Sequence中属于与第一Low-PAPR Sequence重合的内容，替换为第一Low-PAPR Sequence中的目标内容的方式得到；其中，第一Low-PAPR Sequence中的目标内容为第一Low-PAPR Sequence被重合的内容。Wherein, the time domain signal includes the first auxiliary cell-specific reference signal Additional CRS; when the lower frequency band boundary of the synchronous broadcast block SSB of the base station is located above the lower frequency band boundary of the control resource set CORESET 0 of the base station, the first Additional CRS adopts the The content in the second Low-PAPR Sequence that overlaps with the first Low-PAPR Sequence is obtained by replacing it with the target content in the first Low-PAPR Sequence; wherein, the content in the first Low-PAPR Sequence The target content is the superimposed content of the first Low-PAPR Sequence.
第一Low-PAPR Sequence和第二Low-PAPR Sequence如步骤S102和S103的内容所示。The first Low-PAPR Sequence and the second Low-PAPR Sequence are as shown in the contents of steps S102 and S103.
S107、终端采用第一Additional CRS中的第一Low-PAPR Sequence的生成方式，生成第三Low-PAPR Sequence，利用从接收的所述时域信号中提取得到SSB对应频域范围内的信号和第三Low-PAPR Sequence完成下行同 步。S107. The terminal adopts the generation method of the first Low-PAPR Sequence in the first Additional CRS to generate a third Low-PAPR Sequence, and uses the signal in the corresponding frequency domain range of the SSB and the third Low-PAPR Sequence to be extracted from the received time domain signal. Three Low-PAPR Sequences complete downlink synchronization.
具体的，终端通过频域搜索获取SSB所在的频域位置，并通过滤波获取SSB所占资源块的时域数据；对获取的时域数据进行PSS搜索，获取定时信息，并得到
Figure PCTCN2020140481-appb-000013
根据定时信息解调SSS，得到
Figure PCTCN2020140481-appb-000014
进而得到
Figure PCTCN2020140481-appb-000015
Specifically, the terminal obtains the frequency domain position where the SSB is located by searching in the frequency domain, and obtains the time domain data of the resource blocks occupied by the SSB through filtering; performs PSS search on the obtained time domain data, obtains timing information, and obtains
Figure PCTCN2020140481-appb-000013
Demodulate the SSS according to the timing information to get
Figure PCTCN2020140481-appb-000014
to get
Figure PCTCN2020140481-appb-000015
终端和基站对Low-PAPR Sequence的生成方式的进行了约定，因此，终端在接收到时域信号之后，还会利用约定的生成方式，生成第三Low-PAPR Sequence，其表达为a ssb(0),a ssb(1),...,a ssb(N ssb-1)。 The terminal and the base station have agreed on the generation method of the Low-PAPR Sequence. Therefore, after receiving the time domain signal, the terminal will also use the agreed generation method to generate a third Low-PAPR Sequence, which is expressed as a ssb (0 ),a ssb (1),...,a ssb (N ssb -1).
可选的，在本申请的另一实施例中，步骤S107的一种实施方式，如图10所示，包括：Optionally, in another embodiment of the present application, an implementation manner of step S107, as shown in FIG. 10 , includes:
S1001、生成终端的同步广播块SSB的伪随机序列，将终端的同步广播块SSB的伪随机序列进行离散傅里叶变换，得到第三Low-PAPR Sequence。S1001. Generate a pseudo-random sequence of the synchronous broadcast block SSB of the terminal, and perform discrete Fourier transform on the pseudo-random sequence of the synchronous broadcast block SSB of the terminal to obtain a third Low-PAPR Sequence.
具体的，生成第三Low-PAPR Sequence的方法可以参见上述实施例中的生成第一Low-PAPR Sequence的方法，第三Low-PAPR Sequence和第一Low-PAPR Sequence生成的方式是一样的。Specifically, for the method for generating the third Low-PAPR Sequence, reference may be made to the method for generating the first Low-PAPR Sequence in the foregoing embodiment, and the third Low-PAPR Sequence and the first Low-PAPR Sequence are generated in the same manner.
S1002、利用从接收的时域信号中提取得到SSB对应频域范围内的信号和第三Low-PAPR Sequence进行信道估计，得到信道估计结果，并利用信道估计结果解调物理广播信道，得到主***信息MIB。S1002. Use the signal in the frequency domain corresponding to the SSB extracted from the received time domain signal and the third Low-PAPR Sequence to perform channel estimation to obtain the channel estimation result, and use the channel estimation result to demodulate the physical broadcast channel to obtain the primary system Information MIB.
具体的，利用从接收的时域信号中提取得到SSB对应频域范围内的信号Sssb(0),Sssb(1),…Sssb(Nssb-1)和a ssb(0),a ssb(1),...,a ssb(N ssb-1)进行信道估计；根据得到的信道估计盲检PBCH，得到MIB(主***信息，Master Information Block)。 Specifically, the signals Sssb(0), Sssb(1),...Sssb(Nssb-1) and a ssb (0), a ssb (1) in the frequency domain corresponding to the SSB are extracted from the received time domain signal. , .
S1003、根据MIB完成下行同步。S1003. Complete downlink synchronization according to the MIB.
S108、终端采用第一Additional CRS中的第二Low-PAPR Sequence的生成方式，生成第四Low-PAPR Sequence，并利用从接收的时域信号中的CORESET 0频域范围内的信号和第四Low-PAPR Sequence获取上行同步所需的配置信息。S108, the terminal adopts the generation method of the second Low-PAPR Sequence in the first Additional CRS, generates the fourth Low-PAPR Sequence, and uses the signal in the CORESET 0 frequency domain range from the received time domain signal and the fourth Low-PAPR Sequence. -PAPR Sequence obtains the configuration information required for uplink synchronization.
可选的，在本申请的另一实施例中，步骤S108的一种实施方式，如图11所示，包括：Optionally, in another embodiment of the present application, an implementation manner of step S108, as shown in FIG. 11 , includes:
S1101、根据MIB信息，获取终端的CORESET 0的配置信息。S1101. Acquire the configuration information of CORESET 0 of the terminal according to the MIB information.
具体的，根据MIB中的字段‘ssb-SubcarrierOffset’和字段 ‘pdcch-ConfigSIB1’得到CORESET 0的时频资源位置。Specifically, the time-frequency resource location of CORESET 0 is obtained according to the field 'ssb-SubcarrierOffset' and the field 'pdcch-ConfigSIB1' in the MIB.
S1102、生成终端的CORESET 0对应频域范围内的Additional CRS的伪随机序列，将终端的CORESET 0对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到第四Low-PAPR Sequence。S1102. Generate a pseudo-random sequence of Additional CRS in the frequency domain corresponding to CORESET 0 of the terminal, and perform discrete Fourier transform on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to CORESET 0 of the terminal to obtain a fourth Low-PAPR Sequence.
需要说明的是，生成第四Low-PAPR Sequence的方法可以参见上述实施例中的生成第二Low-PAPR Sequence的方法，第四Low-PAPR Sequence和第二Low-PAPR Sequence生成的方式是一样的。It should be noted that, for the method for generating the fourth Low-PAPR Sequence, reference may be made to the method for generating the second Low-PAPR Sequence in the foregoing embodiment, and the methods for generating the fourth Low-PAPR Sequence and the second Low-PAPR Sequence are the same .
S1103、将第四Low-PAPR Sequence上属于与第三Low-PAPR Sequence序列相重合的部分替换为第三Low-PAPR Sequence的目标内容，得到第二Additional CRS。S1103. Replace the part of the fourth Low-PAPR Sequence that overlaps with the third Low-PAPR Sequence sequence with the target content of the third Low-PAPR Sequence to obtain a second Additional CRS.
其中，第三Low-PAPR Sequence中的目标内容为第三Low-PAPR Sequence被重合的内容。Wherein, the target content in the third Low-PAPR Sequence is the overlapped content of the third Low-PAPR Sequence.
需要说明的是，生成第二Additional CRS的方法可以参见上述实施例中的生成第一Additional CRS的方法，此处不再赘述，此处第二Additional CRS可以表达为：It should be noted that, for the method for generating the second Additional CRS, reference may be made to the method for generating the first Additional CRS in the above-mentioned embodiment, which will not be repeated here. Here, the second Additional CRS can be expressed as:
s＝[a cor(0),a cor(1),...,a cor(M-1),a ssb(0),a ssb(1),...,a ssb(N ssb-1),a cor(M+N ssb),...,a cor(N cor-1)]。 s=[a cor (0),a cor (1),...,a cor (M-1),a ssb (0),a ssb (1),...,a ssb (N ssb -1 ), a cor (M+N ssb ),...,a cor (N cor -1)].
需要说明的是，若基站的SSB的频带下边界位于基站的CORESET 0的频带下边界的上方，且基站的SSB和基站的CORESET 0在频域上有重合区域，则按照步骤S1103的方式得到第二Additional CRS。在基站的SSB和基站的CORESET 0在频域上没有重合区域的情况下，组合第四Low-PAPR Sequence和第三Low-PAPR Sequence，得到第二Additional CRS。当然，第二Additional CRS属于第三Low-PAPR Sequence和第四Low-PAPR Sequence频域范围外区域，填充有预定数值。It should be noted that, if the lower boundary of the frequency band of the SSB of the base station is located above the lower boundary of the frequency band of the CORESET 0 of the base station, and the SSB of the base station and the CORESET 0 of the base station have an overlapping area in the frequency domain, then the first step is obtained in the manner of step S1103. Two Additional CRS. In the case that the SSB of the base station and the CORESET 0 of the base station have no overlapping area in the frequency domain, the fourth Low-PAPR Sequence and the third Low-PAPR Sequence are combined to obtain the second Additional CRS. Of course, the second Additional CRS belongs to the region outside the frequency domain range of the third Low-PAPR Sequence and the fourth Low-PAPR Sequence, and is filled with a predetermined value.
S1104、利用从接收的时域信号中的CORESET 0频域范围内的信号和第二Additional CRS进行信道估计，得到终端的CORESET 0在频域范围内的频域信道响应。S1104. Use the signal in the received time domain signal in the CORESET 0 frequency domain range and the second Additional CRS to perform channel estimation to obtain the frequency domain channel response of the terminal's CORESET 0 in the frequency domain range.
其中：从接收的时域信号中的CORESET 0频域范围内的信号表达为：S′＝[Scor(0),Scor(1),…Sssb(M-1),Sssb(0),Sssb(1),…Sssb(Nssb-1),Scor(M+Nssb),…Sssb(Ncor-1))]。Among them: the signal in the CORESET 0 frequency domain range from the received time domain signal is expressed as: S'=[Scor(0),Scor(1),...Sssb(M-1),Sssb(0),Sssb( 1),…Sssb(Nssb-1),Scor(M+Nssb),…Sssb(Ncor-1))].
具体的，利用S和S′进行信道估计，得到CORESET 0的频域范围内的 信道信息。Specifically, channel estimation is performed using S and S', and the channel information in the frequency domain range of CORESET 0 is obtained.
S1105、根据CORESET 0的频域范围内的信道信息，在终端的CORESET 0的时频资源中，盲检下行控制信息格式1-0。S1105. According to the channel information in the frequency domain of CORESET 0, in the time-frequency resource of CORESET 0 of the terminal, blindly detect the downlink control information format 1-0.
S1106、若在终端的CORESET 0的时频资源中，盲检下行控制信息格式1-0成功，则在下行控制信息格式1-0中指示的时频资源对应的物理下行共享信道PDSCH中，获取***消息1，并利用***消息1获取与上行同步所需的配置信息。S1106. If the blind detection of the downlink control information format 1-0 is successful in the time-frequency resources of CORESET 0 of the terminal, obtain the PDSCH in the physical downlink shared channel PDSCH corresponding to the time-frequency resources indicated in the downlink control information format 1-0. System message 1, and use system message 1 to obtain the configuration information required for synchronization with the uplink.
为了衡量本发明对降低PAPR的作用，特做了仿真如下。In order to measure the effect of the present invention on reducing PAPR, a simulation is specially made as follows.
卫星协议中的子载波间隔为120khz，故，本仿真特选取[3,TS 38.213]中适用于SSB和PDCCH的子载波间隔为120kHz的相应表格13-8，选取表格中全部9种SSB与CORESET 0的相对位置，如表1所示：The subcarrier spacing in the satellite protocol is 120khz, so this simulation specially selects the corresponding table 13-8 in [3, TS 38.213] that the subcarrier spacing for SSB and PDCCH is 120kHz, and selects all 9 kinds of SSB and CORESET in the table. The relative position of 0, as shown in Table 1:
Figure PCTCN2020140481-appb-000016
Figure PCTCN2020140481-appb-000016
表1Table 1
其中，
Figure PCTCN2020140481-appb-000017
是CORESET所占的RB数。偏移以RB为单位，方向是从CORESET的下边界到SSB的下边界，当CORESET的下边界位于SSB的下边界之下时，偏移为正值，当CORESET的下边界位于SSB的下边界之上时，偏移为负值，当CORESET的下边界与SSB的下边界重合时，偏移为0。 in,
Figure PCTCN2020140481-appb-000017
is the number of RBs occupied by CORESET. The offset is in RB and the direction is from the lower boundary of CORESET to the lower boundary of SSB. When the lower boundary of CORESET is below the lower boundary of SSB, the offset is positive, and when the lower boundary of CORESET is located at the lower boundary of SSB Above, the offset is negative, and when the lower boundary of CORESET coincides with the lower boundary of SSB, the offset is 0.
当SSB位于BWP中的不同位置时，生成的时域数据的PAPR分布会有轻微波动，为了研究一般性，特选取SSB偏移为[50 70 90 110 130 150 170]RB时的情况，SSB偏移选取的原则是让SSB于CORESET在上述9种情况下，均 位于资源网格中，然后求取PAPR分布的平均值，结果如图12所示：When the SSB is located at different positions in the BWP, the PAPR distribution of the generated time-domain data will fluctuate slightly. The principle of shifting selection is to let SSB and CORESET be located in the resource grid in the above 9 cases, and then calculate the average value of PAPR distribution, and the result is shown in Figure 12:
图12中的Old曲线是指现有卫星NR协议中，Additional CRS的PAPR分布；NewCase0～NewCase8曲线是按照本发明的方法，得到的Additional CRS的PAPR分布，分别对应上表中SSB与CORESET的9种相对位置。The Old curve in Figure 12 refers to the PAPR distribution of the Additional CRS in the existing satellite NR protocol; the NewCase0 to NewCase8 curves are the PAPR distribution of the Additional CRS obtained according to the method of the present invention, respectively corresponding to the 9 of the SSB and CORESET in the above table. kind of relative position.
由图12可知，本发明的方法可明显降低Additional CRS的PAPR。It can be seen from FIG. 12 that the method of the present invention can significantly reduce the PAPR of the Additional CRS.
由以上方案可知，本申请提供的一种信号的传输方法中，由于利用第一Low-PAPR Sequence和第二Low-PAPR Sequence，生成第一Additional CRS，且第一Low-PAPR Sequence根据基站的SSB对应频域范围内的Additional CRS的伪随机序列得到，第二Low-PAPR Sequence根据基站的CORESET 0对应频域范围内的Additional CRS的伪随机序列得到，因此，在基站的SSB的频带下边界位于基站的CORESET 0的频带下边界的上方的情况下，在CORESET 0对应的频域范围内，第一Additional CRS的起始点与用于初始接入的CORESET 0的最低子载波对齐，可以在不知道带宽的宽度的情况下的情况下，利用第一Additional CRS进行***消息的获取；在SSB对应的频域范围内，第一Additional CRS的起始点与用于初始接入的SSB的最低子载波对齐，确保终端在不知道带宽的宽度的情况下，利用第一Additional CRS进行下行同步。It can be seen from the above scheme that in a signal transmission method provided by the present application, the first Additional CRS is generated by using the first Low-PAPR Sequence and the second Low-PAPR Sequence, and the first Low-PAPR Sequence is based on the SSB of the base station. The pseudo-random sequence of the Additional CRS in the corresponding frequency domain is obtained, and the second Low-PAPR Sequence is obtained according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station. Therefore, the lower boundary of the frequency band of the SSB of the base station is located at In the case that the base station's CORESET 0 is above the lower boundary of the frequency band, in the frequency domain range corresponding to CORESET 0, the starting point of the first Additional CRS is aligned with the lowest sub-carrier of CORESET 0 used for initial access. In the case of the width of the bandwidth, the first Additional CRS is used to obtain the system message; in the frequency domain range corresponding to the SSB, the starting point of the first Additional CRS is aligned with the lowest sub-carrier of the SSB used for initial access , to ensure that the terminal uses the first Additional CRS to perform downlink synchronization without knowing the width of the bandwidth.
本申请另一实施例提供了一种信号的传输装置，应用于基站，如图13所示，信号的传输装置具体包括：Another embodiment of the present application provides a signal transmission apparatus, which is applied to a base station. As shown in FIG. 13 , the signal transmission apparatus specifically includes:
第一获取单元1301，用于获取基站的同步广播块SSB。The first obtaining unit 1301 is configured to obtain the synchronous broadcast block SSB of the base station.
可选的，在本申请的另一实施例中，第一获取单元1301的一种实施方式，包括：Optionally, in another embodiment of the present application, an implementation manner of the first obtaining unit 1301 includes:
信号生成单元，用于生成主同步信号PSS、辅同步信号SSS和物理广播信道PBCH。The signal generating unit is used for generating the primary synchronization signal PSS, the secondary synchronization signal SSS and the physical broadcast channel PBCH.
映射单元，用于按照卫星NR协议对PSS、SSS和PBCH进行映射，得到基站的SSB。The mapping unit is used for mapping the PSS, SSS and PBCH according to the satellite NR protocol to obtain the SSB of the base station.
本申请上述实施例公开的单元的具体工作过程，可参见对应的方法实施例内容，如图3所示，此处不再赘述。For the specific working process of the units disclosed in the foregoing embodiments of the present application, reference may be made to the content of the corresponding method embodiment, as shown in FIG. 3 , and details are not repeated here.
第一生成单元1302，用于生成基站的SSB对应频域范围内的辅助小区专属参考信号Additional CRS的伪随机序列，根据基站的SSB对应频域范 围内的Additional CRS的伪随机序列，得到第一低峰均值功率比序列Low-PAPR Sequence。The first generating unit 1302 is used to generate the pseudo-random sequence of the auxiliary cell-specific reference signal Additional CRS in the frequency domain corresponding to the SSB of the base station, and obtain the first according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station. Low-PAPR Sequence.
可选的，在本申请的另一实施例中，第一生成单元1302的一种实施方式，包括：Optionally, in another embodiment of the present application, an implementation manner of the first generating unit 1302 includes:
第一离散傅里叶变换单元，用于将基站的SSB对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到第一低峰均值功率比序列Low-PAPR Sequence。The first discrete Fourier transform unit is used to perform discrete Fourier transform on the pseudo-random sequence of the Additional CRS in the frequency domain range corresponding to the SSB of the base station, to obtain a first low peak-to-average power ratio sequence Low-PAPR Sequence.
本申请上述实施例公开的单元的具体工作过程，可参见对应的方法实施例内容，此处不再赘述。For the specific working process of the units disclosed in the above embodiments of the present application, reference may be made to the contents of the corresponding method embodiments, which will not be repeated here.
第二生成单元1303，用于生成基站的控制资源集合CORESET 0对应频域范围内的Additional CRS的伪随机序列，根据基站的CORESET 0对应频域范围内的Additional CRS的伪随机序列，得到第二Low-PAPR Sequence。The second generating unit 1303 is configured to generate a pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the control resource set CORESET 0 of the base station, and obtain the second pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station Low-PAPR Sequence.
可选的，在本申请的另一实施例中，第二生成单元1303的一种实施方式，包括：Optionally, in another embodiment of the present application, an implementation manner of the second generating unit 1303 includes:
第二离散傅里叶变换单元，用于将基站的CORESET 0对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到第二Low-PAPR Sequence。The second discrete Fourier transform unit is used to perform discrete Fourier transform on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station to obtain the second Low-PAPR Sequence.
本申请上述实施例公开的单元的具体工作过程，可参见对应的方法实施例内容，此处不再赘述。For the specific working process of the units disclosed in the above embodiments of the present application, reference may be made to the contents of the corresponding method embodiments, which will not be repeated here.
第三生成单元1304，用于利用第一Low-PAPR Sequence和第二Low-PAPR Sequence，生成第一Additional CRS。The third generating unit 1304 is configured to generate the first Additional CRS by using the first Low-PAPR Sequence and the second Low-PAPR Sequence.
广播单元1305，用于将包含第一Additional CRS的时域信号进行广播。The broadcasting unit 1305 is configured to broadcast the time domain signal including the first Additional CRS.
本申请上述实施例公开的单元的具体工作过程，可参见对应的方法实施例内容，如图1所示，此处不再赘述。For the specific working process of the units disclosed in the above embodiments of the present application, reference may be made to the content of the corresponding method embodiment, as shown in FIG. 1 , and details are not repeated here.
可选的，在本申请的另一实施例中，若基站的SSB的频带下边界位于基站的CORESET 0的频带下边界的上方，且基站的SSB和基站的CORESET 0有重合区域，第三生成单元，用于：Optionally, in another embodiment of the present application, if the lower boundary of the frequency band of the SSB of the base station is located above the lower boundary of the frequency band of the CORESET 0 of the base station, and the SSB of the base station and the CORESET 0 of the base station have an overlapping area, the third generation unit for:
将第二Low-PAPR Sequence中属于与第一Low-PAPR Sequence重合的内容，替换为第一Low-PAPR Sequence中的目标内容，得到第一Additional CRS。Replace the content that overlaps with the first Low-PAPR Sequence in the second Low-PAPR Sequence with the target content in the first Low-PAPR Sequence to obtain the first Additional CRS.
其中，第一Low-PAPR Sequence中的目标内容为第一Low-PAPR Sequence被重合的内容。Wherein, the target content in the first Low-PAPR Sequence is the overlapped content of the first Low-PAPR Sequence.
本申请上述实施例公开的单元的具体工作过程，可参见对应的方法实施例内容，此处不再赘述。For the specific working process of the units disclosed in the above embodiments of the present application, reference may be made to the contents of the corresponding method embodiments, which will not be repeated here.
可选的，在本申请的另一实施例中，若基站的SSB和基站的CORESET 0在频域上没有重合区域，第三生成单元，用于：Optionally, in another embodiment of the present application, if the SSB of the base station and the CORESET 0 of the base station have no overlapping area in the frequency domain, the third generating unit is used for:
组合第一Low-PAPR Sequence和第二Low-PAPR Sequence，得到第一Additional CRS。The first Low-PAPR Sequence and the second Low-PAPR Sequence are combined to obtain the first Additional CRS.
其中，第一Additional CRS中属于第一Low-PAPR Sequence和第二Low-PAPR Sequence频域范围外区域，填充有预定数值。Wherein, the first Additional CRS belongs to the region outside the frequency domain range of the first Low-PAPR Sequence and the second Low-PAPR Sequence, and is filled with a predetermined value.
本申请上述实施例公开的单元的具体工作过程，可参见对应的方法实施例内容，此处不再赘述。For the specific working process of the units disclosed in the above embodiments of the present application, reference may be made to the contents of the corresponding method embodiments, which will not be repeated here.
由以上方案可知，本申请提供的一种应用于基站的信号的传输装置，通过第一获取单元1301获取基站的同步广播块SSB，然后，第一生成单元1302生成基站的SSB对应频域范围内的辅助小区专属参考信号Additional CRS的伪随机序列，根据基站的SSB对应频域范围内的Additional CRS的伪随机序列，得到第一低峰均值功率比序列Low-PAPR Sequence。第二生成单元1303生成基站的控制资源集合CORESET 0对应频域范围内的Additional CRS的伪随机序列，根据基站的CORESET 0对应频域范围内的Additional CRS的伪随机序列，得到第二Low-PAPR Sequence。第三生成单元1304再利用第一Low-PAPR Sequence和第二Low-PAPR Sequence，生成第一Additional CRS。最终，广播单元1305将包含第一Additional CRS的时域信号进行广播。从而达到在基站的SSB的频带下边界位于基站的CORESET 0的频带下边界的上方的情况下，在CORESET 0对应的频域范围内，第一Additional CRS的起始点与用于初始接入的CORESET 0的最低子载波对齐，可以在不知道带宽的宽度的情况下的情况下，利用第一Additional CRS进行***消息的获取；在SSB对应的频域范围内，第一Additional CRS的起始点与用于初始接入的SSB的最低子载波对齐，确保终端在不知道带宽的宽度的情况下，利用第一Additional CRS进行下行同步的目的。It can be seen from the above solutions that a signal transmission device applied to a base station provided by the present application obtains the synchronous broadcast block SSB of the base station through the first obtaining unit 1301, and then the first generating unit 1302 generates the SSB of the base station within the corresponding frequency domain range. The pseudo-random sequence of the auxiliary cell-specific reference signal Additional CRS, according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station, the first low peak-to-average power ratio sequence Low-PAPR Sequence is obtained. The second generating unit 1303 generates a pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the control resource set CORESET 0 of the base station, and obtains the second Low-PAPR according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station Sequence. The third generating unit 1304 uses the first Low-PAPR Sequence and the second Low-PAPR Sequence to generate the first Additional CRS. Finally, the broadcasting unit 1305 broadcasts the time domain signal including the first Additional CRS. Thus, in the case where the lower boundary of the frequency band of the SSB of the base station is located above the lower boundary of the frequency band of the CORESET 0 of the base station, in the frequency domain range corresponding to CORESET 0, the starting point of the first Additional CRS is the same as the CORESET used for initial access. The lowest subcarrier alignment of 0 can use the first Additional CRS to obtain system messages without knowing the width of the bandwidth; in the frequency domain corresponding to the SSB, the starting point of the first Additional CRS and the Aligning the lowest subcarrier of the SSB initially accessed to ensure that the terminal uses the first Additional CRS to perform downlink synchronization without knowing the width of the bandwidth.
本申请另一实施例提供了一种信号的传输装置，应用于终端，如图14所示，信号的传输装置具体包括：Another embodiment of the present application provides a signal transmission device, which is applied to a terminal. As shown in FIG. 14 , the signal transmission device specifically includes:
接收单元1401，用于接收基站广播的时域信号。The receiving unit 1401 is configured to receive the time domain signal broadcast by the base station.
其中，时域信号包括第一辅助小区专属参考信号Additional CRS；第一Additional CRS利用第一低峰均值功率比序列Low-PAPR Sequence和第二Low-PAPR Sequence生成。Wherein, the time domain signal includes the first auxiliary cell-specific reference signal Additional CRS; the first Additional CRS is generated by using the first low peak-to-average power ratio sequence Low-PAPR Sequence and the second Low-PAPR Sequence.
第四生成单元1402，用于采用第一Additional CRS中的第一Low-PAPR Sequence的生成方式，生成第三Low-PAPR Sequence，利用从接收的时域信号中提取得到SSB对应频域范围内的信号和第三Low-PAPR Sequence完成下行同步。The fourth generation unit 1402 is used to adopt the generation mode of the first Low-PAPR Sequence in the first Additional CRS, to generate the third Low-PAPR Sequence, and to extract the SSB corresponding frequency domain from the received time domain signal. The signal and the third Low-PAPR Sequence complete downlink synchronization.
可选的，在本申请的另一实施例中，第四生成单元1402的一种实施方式，如图15所示，包括：Optionally, in another embodiment of the present application, an implementation manner of the fourth generating unit 1402, as shown in FIG. 15 , includes:
第四生成子单元1501，用于生成终端的同步广播块SSB的伪随机序列，将终端的同步广播块SSB的伪随机序列进行离散傅里叶变换，得到第三Low-PAPR Sequence。The fourth generation subunit 1501 is used to generate a pseudo-random sequence of the synchronous broadcast block SSB of the terminal, and perform discrete Fourier transform on the pseudo-random sequence of the synchronous broadcast block SSB of the terminal to obtain a third Low-PAPR Sequence.
第一信道估计单元1502，用于利用从接收的时域信号中提取得到SSB对应频域范围内的信号和第三Low-PAPR Sequence进行信道估计，得到信道估计结果，并利用信道估计结果解调物理广播信道，得到主***信息MIB。The first channel estimation unit 1502 is used to perform channel estimation using the signal in the frequency domain corresponding to the SSB obtained from the received time domain signal and the third Low-PAPR Sequence to obtain a channel estimation result, and demodulate using the channel estimation result Physical broadcast channel, get the main system information MIB.
下行同步单元1503，用于根据MIB完成下行同步。The downlink synchronization unit 1503 is configured to complete downlink synchronization according to the MIB.
本申请上述实施例公开的单元的具体工作过程，可参见对应的方法实施例内容，如图10所示，此处不再赘述。For the specific working process of the units disclosed in the foregoing embodiments of the present application, reference may be made to the content of the corresponding method embodiment, as shown in FIG. 10 , and details are not repeated here.
第五生成单元1403，用于采用第一Additional CRS中的第二Low-PAPR Sequence的生成方式，生成第四Low-PAPR Sequence；并利用从接收的时域信号中的CORESET 0频域范围内的信号和第四Low-PAPR Sequence获取上行同步所需的配置信息。The fifth generation unit 1403 is used to generate the fourth Low-PAPR Sequence by using the generation mode of the second Low-PAPR Sequence in the first Additional CRS; and utilize the CORESET 0 frequency domain from the received time domain signal. The signal and the fourth Low-PAPR Sequence obtain configuration information required for uplink synchronization.
本申请上述实施例公开的单元的具体工作过程，可参见对应的方法实施例内容，如图1所示，此处不再赘述。For the specific working process of the units disclosed in the above embodiments of the present application, reference may be made to the content of the corresponding method embodiment, as shown in FIG. 1 , and details are not repeated here.
可选的，在本申请的另一实施例中，第五生成单元1403的一种实施方式，如图16所示，包括：Optionally, in another embodiment of the present application, an implementation manner of the fifth generating unit 1403, as shown in FIG. 16 , includes:
第二获取单元1601，用于根据MIB信息，获取终端的CORESET 0的 配置信息。The second obtaining unit 1601 is configured to obtain the configuration information of CORESET 0 of the terminal according to the MIB information.
第五生成子单元1602，用于生成终端的CORESET 0对应频域范围内的Additional CRS的伪随机序列，将终端的CORESET 0对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到第四Low-PAPR Sequence。The fifth generation subunit 1602 is used to generate the pseudo-random sequence of the Additional CRS in the corresponding frequency domain of the terminal's CORESET 0, and the pseudo-random sequence of the Additional CRS in the corresponding frequency domain of the terminal's CORESET 0 is subjected to discrete Fourier transform , the fourth Low-PAPR Sequence is obtained.
替换单元1603，用于将第四Low-PAPR Sequence上属于与第三Low-PAPR Sequence序列相重合的部分替换为第三Low-PAPR Sequence的目标内容，得到第二Additional CRS。The replacement unit 1603 is configured to replace the part of the fourth Low-PAPR Sequence that overlaps with the third Low-PAPR Sequence sequence with the target content of the third Low-PAPR Sequence to obtain a second Additional CRS.
其中，第三Low-PAPR Sequence中的目标内容为第三Low-PAPR Sequence被重合的内容。Wherein, the target content in the third Low-PAPR Sequence is the overlapped content of the third Low-PAPR Sequence.
第二信道估计单元1604，用于利用从接收的时域信号中的CORESET 0频域范围内的信号和第二Additional CRS进行信道估计，得到终端的CORESET 0在频域范围内的频域信道响应。The second channel estimation unit 1604 is configured to perform channel estimation using the signal in the CORESET 0 frequency domain range from the received time domain signal and the second Additional CRS to obtain the frequency domain channel response of the terminal's CORESET 0 in the frequency domain range .
盲检单元1605，用于在终端的CORESET 0的时频资源中，盲检下行控制信息格式1-0。The blind detection unit 1605 is configured to blindly detect the downlink control information format 1-0 in the time-frequency resource of CORESET 0 of the terminal.
第三获取单元1606，用于若盲检单元1605在终端的CORESET 0的时频资源中，盲检下行控制信息格式1-0成功，则在下行控制信息格式1-0中指示的时频资源对应的物理下行共享信道PDSCH中，获取***消息1，并利用***消息1获取与上行同步所需的配置信息。The third acquiring unit 1606 is configured to, if the blind detection unit 1605 succeeds in blindly detecting the downlink control information format 1-0 in the time-frequency resources of the CORESET 0 of the terminal, then the time-frequency resources indicated in the downlink control information format 1-0 In the corresponding physical downlink shared channel PDSCH, the system message 1 is obtained, and the configuration information required for synchronization with the uplink is obtained by using the system message 1.
本申请上述实施例公开的单元的具体工作过程，可参见对应的方法实施例内容，如图11所示，此处不再赘述。For the specific working process of the units disclosed in the foregoing embodiments of the present application, reference may be made to the content of the corresponding method embodiment, as shown in FIG. 11 , and details are not described herein again.
由以上方案可知，本申请提供的一种应用于终端的信号的传输装置，通过接收单元1401接收基站广播的时域信号。其中，时域信号包括第一辅助小区专属参考信号Additional CRS；第一Additional CRS利用第一低峰均值功率比序列Low-PAPR Sequence和第二Low-PAPR Sequence生成。然后，第四生成单元1402采用第一Additional CRS中的第一Low-PAPR Sequence的生成方式，生成第三Low-PAPR Sequence，利用从接收的时域信号中提取得到SSB对应频域范围内的信号和第三Low-PAPR Sequence完成下行同步。最后，第五生成单元1403采用第一Additional CRS中的第二Low-PAPR Sequence的生成方式，生成第四Low-PAPR Sequence；并利用从接收的时域信号中的CORESET 0频域范围内的信号和第四 Low-PAPR Sequence获取上行同步所需的配置信息。以达到确保终端在不知道带宽的宽度的情况下，利用第一Additional CRS进行下行同步的目的。It can be seen from the above solutions that a signal transmission device applied to a terminal provided by the present application receives a time domain signal broadcast by a base station through the receiving unit 1401 . Wherein, the time domain signal includes the first auxiliary cell-specific reference signal Additional CRS; the first Additional CRS is generated by using the first low peak-to-average power ratio sequence Low-PAPR Sequence and the second Low-PAPR Sequence. Then, the fourth generation unit 1402 adopts the generation method of the first Low-PAPR Sequence in the first Additional CRS to generate the third Low-PAPR Sequence, and uses the signal in the frequency domain corresponding to the SSB to be extracted from the received time domain signal. Complete downlink synchronization with the third Low-PAPR Sequence. Finally, the fifth generation unit 1403 adopts the generation method of the second Low-PAPR Sequence in the first Additional CRS to generate the fourth Low-PAPR Sequence; and utilizes the signal in the CORESET 0 frequency domain range from the received time domain signal and the fourth Low-PAPR Sequence to obtain configuration information required for uplink synchronization. In order to achieve the purpose of ensuring that the terminal uses the first Additional CRS to perform downlink synchronization without knowing the width of the bandwidth.
本申请另一实施例提供了一种基站，如图17所示，包括：Another embodiment of the present application provides a base station, as shown in FIG. 17 , including:
一个或多个处理器1701。One or more processors 1701.
存储装置1702，其上存储有一个或多个程序。 Storage device 1702 on which one or more programs are stored.
当所述一个或多个程序被所述一个或多个处理器1701执行时，使得所述一个或多个处理器1701实现如上述实施例中步骤S101-S105的方法。When the one or more programs are executed by the one or more processors 1701, the one or more processors 1701 are caused to implement the method as steps S101-S105 in the above embodiments.
本申请另一实施例提供了一种终端，如图18所示，包括：Another embodiment of the present application provides a terminal, as shown in FIG. 18 , including:
一个或多个处理器1801。One or more processors 1801.
存储装置1802，其上存储有一个或多个程序。A storage device 1802 having one or more programs stored thereon.
当所述一个或多个程序被所述一个或多个处理器1801执行时，使得所述一个或多个处理器1801实现如上述实施例中步骤S106-S108的方法。When the one or more programs are executed by the one or more processors 1801, the one or more processors 1801 are caused to implement the method as steps S106-S108 in the above embodiments.
本申请另一实施例提供了一种计算机存储介质，其上存储有计算机程序，其中，计算机程序被处理器执行时实现如上述实施例中任意一项所述的方法。Another embodiment of the present application provides a computer storage medium on which a computer program is stored, wherein when the computer program is executed by a processor, the method described in any one of the foregoing embodiments is implemented.
在本申请公开的上述实施例中，应该理解到，所揭露的装置和方法，也可以通过其它的方式实现。以上所描述的装置和方法实施例仅仅是示意性的，例如，附图中的流程图和框图显示了根据本公开的多个实施例的装置、方法和计算机程序产品的可能实现的体系架构、功能和操作。在这点上，流程图或框图中的每个方框可以代表一个模块、程序段或代码的一部分，所述模块、程序段或代码的一部分包含一个或多个用于实现规定的逻辑功能的可执行指令。也应当注意，在有些作为替换的实现方式中，方框中所标注的功能也可以以不同于附图中所标注的顺序发生。例如，两个连续的方框实际上可以基本并行地执行，它们有时也可以按相反的顺序执行，这依所涉及的功能而定。也要注意的是，框图和/或流程图中的每个方框、以及框图和/或流程图中的方框的组合，可以用执行规定的功能或动作的专用的基于硬件的***来实现，或者可以用专用硬件与计算机指令的组合来实现。In the above-mentioned embodiments disclosed in this application, it should be understood that the disclosed apparatus and method may also be implemented in other manners. The apparatus and method embodiments described above are merely illustrative, for example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, possible implementations of apparatus, methods and computer program products according to various embodiments of the present disclosure, function and operation. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code that contains one or more functions for implementing the specified logical function(s) executable instructions. It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It is also noted that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented in dedicated hardware-based systems that perform the specified functions or actions , or can be implemented in a combination of dedicated hardware and computer instructions.
另外，在本公开各个实施例中的各功能模块可以集成在一起形成一个独立的部分，也可以是各个模块单独存在，也可以两个或两个以上模块集 成形成一个独立的部分。所述功能如果以软件功能模块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现有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，直播设备，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、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。In addition, each functional module in each embodiment of the present disclosure may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part. If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the present disclosure can be embodied in the form of software products in essence, or the parts that contribute to the prior art or the parts of the technical solutions. The computer software products are stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a live broadcast device, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present disclosure. The aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .
专业技术人员能够实现或使用本申请。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本申请的精神或范围的情况下，在其它实施例中实现。因此，本申请将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。A skilled person can implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, this application is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (20)

  1. 一种信号的传输方法，其特征在于，应用于基站，所述信号的传输方法，包括：A signal transmission method, characterized in that, applied to a base station, the signal transmission method includes:
    获取基站的同步广播块SSB；Obtain the synchronous broadcast block SSB of the base station;
    生成所述基站的SSB对应频域范围内的辅助小区专属参考信号Additional CRS的伪随机序列，根据所述基站的SSB对应频域范围内的Additional CRS的伪随机序列，得到第一低峰均值功率比序列Low-PAPR Sequence；Generate a pseudo-random sequence of the auxiliary cell-specific reference signal Additional CRS in the corresponding frequency domain of the SSB of the base station, and obtain the first low peak-average power according to the pseudo-random sequence of the Additional CRS in the corresponding frequency domain of the SSB of the base station Compare the sequence Low-PAPR Sequence;
    生成所述基站的控制资源集合CORESET 0对应频域范围内的Additional CRS的伪随机序列，根据所述基站的CORESET 0对应频域范围内的Additional CRS的伪随机序列，得到第二Low-PAPR Sequence；Generate a pseudo-random sequence of Additional CRS in the frequency domain corresponding to the control resource set CORESET 0 of the base station, and obtain a second Low-PAPR Sequence according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to CORESET 0 of the base station ;
    利用所述第一Low-PAPR Sequence和所述第二Low-PAPR Sequence，生成第一Additional CRS；Using the first Low-PAPR Sequence and the second Low-PAPR Sequence to generate a first Additional CRS;
    将包含所述第一Additional CRS的时域信号进行广播。The time domain signal including the first Additional CRS is broadcast.
  2. 根据权利要求1所述的传输方法，其特征在于，所述获取基站的同步广播块SSB，包括：The transmission method according to claim 1, wherein the acquiring the synchronous broadcast block SSB of the base station comprises:
    生成主同步信号PSS、辅同步信号SSS和物理广播信道PBCH；Generate the primary synchronization signal PSS, the secondary synchronization signal SSS and the physical broadcast channel PBCH;
    按照卫星NR协议对所述PSS、所述SSS和所述PBCH进行映射，得到所述基站的SSB。The PSS, the SSS and the PBCH are mapped according to the satellite NR protocol to obtain the SSB of the base station.
  3. 根据权利要求1所述的传输方法，其特征在于，所述根据所述基站的SSB对应频域范围内的Additional CRS的伪随机序列，得到第一低峰均值功率比序列Low-PAPR Sequence，包括：The transmission method according to claim 1, wherein the obtaining the first Low-PAPR Sequence according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station, comprises the following steps: :
    将所述基站的SSB对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到第一低峰均值功率比序列Low-PAPR Sequence。Discrete Fourier transform is performed on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station to obtain the first low-peak-to-average power ratio sequence Low-PAPR Sequence.
  4. 根据权利要求1所述的传输方法，其特征在于，所述根据所述基站的CORESET 0对应频域范围内的Additional CRS的伪随机序列，得到第二Low-PAPR Sequence，包括：The transmission method according to claim 1, wherein the obtaining of the second Low-PAPR Sequence according to the pseudo-random sequence of the Additional CRS in the frequency domain range corresponding to CORESET 0 of the base station, comprises:
    将所述基站的CORESET 0对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到第二Low-PAPR Sequence。Discrete Fourier transform is performed on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station to obtain the second Low-PAPR Sequence.
  5. 根据权利要求1所述的传输方法，其特征在于，若所述基站的SSB的频带下边界位于所述基站的CORESET 0的频带下边界的上方，且所述 基站的SSB和所述基站的CORESET 0有重合区域，所述利用所述第一Low-PAPR Sequence和所述第二Low-PAPR Sequence，生成第一Additional CRS，包括：The transmission method according to claim 1, wherein, if the lower boundary of the frequency band of the SSB of the base station is located above the lower boundary of the frequency band of the CORESET 0 of the base station, and the SSB of the base station and the CORESET of the base station 0 has an overlapping area, and the first Additional CRS is generated by using the first Low-PAPR Sequence and the second Low-PAPR Sequence, including:
    将所述第二Low-PAPR Sequence中属于与所述第一Low-PAPR Sequence重合的内容，替换为所述第一Low-PAPR Sequence中的目标内容，得到所述第一Additional CRS；其中，所述第一Low-PAPR Sequence中的目标内容为所述第一Low-PAPR Sequence被重合的内容。Replace the content that overlaps with the first Low-PAPR Sequence in the second Low-PAPR Sequence with the target content in the first Low-PAPR Sequence to obtain the first Additional CRS; wherein, the The target content in the first Low-PAPR Sequence is the overlapped content of the first Low-PAPR Sequence.
  6. 根据权利要求1所述的传输方法，其特征在于，若所述基站的SSB和所述基站的CORESET 0在频域上没有重合区域，所述利用所述第一Low-PAPR Sequence和所述第二Low-PAPR Sequence，生成第一Additional CRS，包括：The transmission method according to claim 1, wherein, if the SSB of the base station and the CORESET 0 of the base station do not have an overlapping area in the frequency domain, the first Low-PAPR Sequence and the first Low-PAPR Sequence are used. Two Low-PAPR Sequence, generating the first Additional CRS, including:
    组合所述第一Low-PAPR Sequence和所述第二Low-PAPR Sequence，得到所述第一Additional CRS；其中，所述第一Additional CRS中属于所述第一Low-PAPR Sequence和所述第二Low-PAPR Sequence频域范围外区域，填充有预定数值。Combining the first Low-PAPR Sequence and the second Low-PAPR Sequence to obtain the first Additional CRS; wherein the first Additional CRS belongs to the first Low-PAPR Sequence and the second Low-PAPR Sequence Low-PAPR Sequence The area outside the frequency domain range is filled with a predetermined value.
  7. 一种信号的传输方法，其特征在于，应用于终端，所述信号的传输方法，包括：A signal transmission method, characterized in that, applied to a terminal, the signal transmission method includes:
    接收基站广播的时域信号；其中，所述时域信号包括第一辅助小区专属参考信号Additional CRS；所述第一Additional CRS利用第一低峰均值功率比序列Low-PAPR Sequence和第二Low-PAPR Sequence生成；Receive a time domain signal broadcast by a base station; wherein, the time domain signal includes a first auxiliary cell-specific reference signal Additional CRS; the first Additional CRS uses a first low peak-to-average power ratio sequence Low-PAPR Sequence and a second Low-PAPR Sequence PAPR Sequence generation;
    采用所述第一Additional CRS中的第一Low-PAPR Sequence的生成方式，生成第三Low-PAPR Sequence，利用从接收的所述时域信号中提取得到SSB对应频域范围内的信号和所述第三Low-PAPR Sequence完成下行同步；Using the generation method of the first Low-PAPR Sequence in the first Additional CRS, a third Low-PAPR Sequence is generated, and the signal in the frequency domain corresponding to the SSB and the The third Low-PAPR Sequence completes downlink synchronization;
    采用所述第一Additional CRS中的第二Low-PAPR Sequence的生成方式，生成第四Low-PAPR Sequence，并利用从接收的所述时域信号中的CORESET 0频域范围内的信号和所述第四Low-PAPR Sequence获取上行同步所需的配置信息。A fourth Low-PAPR Sequence is generated using the generation method of the second Low-PAPR Sequence in the first Additional CRS, and the signal in the CORESET 0 frequency domain range from the received time domain signal and the The fourth Low-PAPR Sequence obtains configuration information required for uplink synchronization.
  8. 根据权利要求7所述的传输方法，其特征在于，所述采用所述第一Additional CRS中的第一Low-PAPR Sequence的生成方式，生成第三Low-PAPR Sequence，利用从接收的所述时域信号中提取得到SSB对应频 域范围内的信号和所述第三Low-PAPR Sequence完成下行同步，包括：The transmission method according to claim 7, wherein the generation method of the first Low-PAPR Sequence in the first Additional CRS is used to generate the third Low-PAPR Sequence, and the Domain signals are extracted to obtain the signal in the corresponding frequency domain of the SSB and the third Low-PAPR Sequence to complete downlink synchronization, including:
    生成所述终端的同步广播块SSB的伪随机序列，将所述终端的同步广播块SSB的伪随机序列进行离散傅里叶变换，得到所述第三Low-PAPR Sequence；generating a pseudo-random sequence of the synchronous broadcast block SSB of the terminal, and performing discrete Fourier transform on the pseudo-random sequence of the synchronous broadcast block SSB of the terminal to obtain the third Low-PAPR Sequence;
    利用所述从接收的所述时域信号中提取得到SSB对应频域范围内的信号和所述第三Low-PAPR Sequence进行信道估计，得到信道估计结果，并利用所述信道估计结果解调物理广播信道，得到主***信息MIB；Use the signal in the frequency domain corresponding to the SSB extracted from the received time domain signal and the third Low-PAPR Sequence to perform channel estimation to obtain a channel estimation result, and use the channel estimation result to demodulate the physical Broadcast channel, get the main system information MIB;
    根据所述MIB完成下行同步。Downlink synchronization is completed according to the MIB.
  9. 根据权利要求7所述的传输方法，其特征在于，所述采用所述第一Additional CRS中的第二Low-PAPR Sequence的生成方式，生成第四Low-PAPR Sequence，并利用从接收的所述时域信号中的CORESET 0频域范围内的信号和所述第四Low-PAPR Sequence获取上行同步所需的配置信息，包括：The transmission method according to claim 7, wherein the generation method of the second Low-PAPR Sequence in the first Additional CRS is used to generate a fourth Low-PAPR Sequence, and the received In the time domain signal, the signal in the CORESET 0 frequency domain range and the fourth Low-PAPR Sequence obtain the configuration information required for uplink synchronization, including:
    根据所述MIB信息，获取所述终端的CORESET 0的配置信息；According to the MIB information, obtain the configuration information of the CORESET 0 of the terminal;
    生成所述终端的CORESET 0对应频域范围内的Additional CRS的伪随机序列，将所述终端的CORESET 0对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到所述第四Low-PAPR Sequence；Generate a pseudo-random sequence of Additional CRS in the frequency domain corresponding to CORESET 0 of the terminal, perform discrete Fourier transform on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to CORESET 0 of the terminal, and obtain the first Four Low-PAPR Sequence;
    将所述第四Low-PAPR Sequence上属于与所述第三Low-PAPR Sequence序列相重合的部分替换为所述第三Low-PAPR Sequence的目标内容，得到第二Additional CRS；其中，所述第三Low-PAPR Sequence中的目标内容为所述第三Low-PAPR Sequence被重合的内容；Replace the part of the fourth Low-PAPR Sequence that overlaps with the third Low-PAPR Sequence with the target content of the third Low-PAPR Sequence to obtain a second Additional CRS; The target content in the three Low-PAPR Sequences is the overlapping content of the third Low-PAPR Sequence;
    利用所述从接收的所述时域信号中的CORESET 0频域范围内的信号和所述第二Additional CRS进行信道估计，得到所述终端的CORESET 0在频域范围内的频域信道响应；Perform channel estimation by using the signal in the CORESET 0 frequency domain range and the second Additional CRS received from the time domain signal to obtain the frequency domain channel response of the CORESET 0 of the terminal in the frequency domain range;
    在所述终端的CORESET 0的时频资源中，盲检下行控制信息格式1-0；In the time-frequency resource of CORESET 0 of the terminal, blindly detect downlink control information format 1-0;
    若在所述终端的CORESET 0的时频资源中，盲检所述下行控制信息格式1-0成功，则在所述下行控制信息格式1-0中指示的时频资源对应的物理下行共享信道PDSCH中，获取所述***消息1，并利用所述***消息1获取与上行同步所需的配置信息。If the blind detection of the downlink control information format 1-0 is successful in the time-frequency resource of CORESET 0 of the terminal, the physical downlink shared channel corresponding to the time-frequency resource indicated in the downlink control information format 1-0 In the PDSCH, the system message 1 is obtained, and the configuration information required for synchronization with the uplink is obtained by using the system message 1.
  10. 一种信号的传输装置，其特征在于，应用于基站，所述信号的传输装置，包括：A signal transmission device, characterized in that, when applied to a base station, the signal transmission device includes:
    第一获取单元，用于获取基站的同步广播块SSB；a first acquiring unit, configured to acquire the synchronous broadcast block SSB of the base station;
    第一生成单元，用于生成所述基站的SSB对应频域范围内的辅助小区专属参考信号Additional CRS的伪随机序列，根据所述基站的SSB对应频域范围内的Additional CRS的伪随机序列，得到第一低峰均值功率比序列Low-PAPR Sequence；The first generation unit is used to generate the pseudo-random sequence of the Additional CRS of the auxiliary cell exclusive reference signal in the corresponding frequency domain of the SSB of the base station, according to the pseudo-random sequence of the Additional CRS in the corresponding frequency domain of the SSB of the base station, Obtain the first low peak-to-average power ratio sequence Low-PAPR Sequence;
    第二生成单元，用于生成所述基站的控制资源集合CORESET 0对应频域范围内的Additional CRS的伪随机序列，根据所述基站的CORESET 0对应频域范围内的Additional CRS的伪随机序列，得到第二Low-PAPR Sequence；The second generating unit is configured to generate a pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the control resource set CORESET 0 of the base station, according to the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the base station, Obtain the second Low-PAPR Sequence;
    第三生成单元，用于利用所述第一Low-PAPR Sequence和所述第二Low-PAPR Sequence，生成第一Additional CRS；a third generating unit, configured to generate a first Additional CRS by using the first Low-PAPR Sequence and the second Low-PAPR Sequence;
    广播单元，用于将包含所述第一Additional CRS的时域信号进行广播。A broadcasting unit, configured to broadcast the time domain signal including the first Additional CRS.
  11. 根据权利要求10所述的传输装置，其特征在于，所述第一获取单元，包括：The transmission device according to claim 10, wherein the first acquisition unit comprises:
    信号生成单元，用于生成主同步信号PSS、辅同步信号SSS和物理广播信道PBCH；a signal generating unit for generating a primary synchronization signal PSS, a secondary synchronization signal SSS and a physical broadcast channel PBCH;
    映射单元，用于按照卫星NR协议对所述PSS、所述SSS和所述PBCH进行映射，得到所述基站的SSB。a mapping unit, configured to map the PSS, the SSS and the PBCH according to the satellite NR protocol to obtain the SSB of the base station.
  12. 根据权利要求10所述的传输装置，其特征在于，所述第一生成单元，用于：The transmission device according to claim 10, wherein the first generating unit is used for:
    将所述基站的SSB对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到第一低峰均值功率比序列Low-PAPR Sequence。Discrete Fourier transform is performed on the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the SSB of the base station to obtain a first low-peak-to-average power ratio sequence Low-PAPR Sequence.
  13. 根据权利要求10所述的传输装置，其特征在于，若所述基站的SSB的频带下边界位于所述基站的CORESET 0的频带下边界的上方，且所述基站的SSB和所述基站的CORESET 0有重合区域，所述第三生成单元，用于：The transmission device according to claim 10, wherein if the lower boundary of the frequency band of the SSB of the base station is located above the lower boundary of the frequency band of the CORESET 0 of the base station, and the SSB of the base station and the CORESET of the base station 0 has overlapping regions, the third generation unit is used to:
    将所述第二Low-PAPR Sequence中属于与所述第一Low-PAPR Sequence重合的内容，替换为所述第一Low-PAPR Sequence中的目标内容，得到所述第一Additional CRS；其中，所述第一Low-PAPR Sequence中的目标内容为所述第一Low-PAPR Sequence被重合的内容。Replace the content that overlaps with the first Low-PAPR Sequence in the second Low-PAPR Sequence with the target content in the first Low-PAPR Sequence to obtain the first Additional CRS; wherein, the The target content in the first Low-PAPR Sequence is the overlapped content of the first Low-PAPR Sequence.
  14. 根据权利要求10所述的传输装置，其特征在于，若所述基站的 SSB和所述基站的CORESET 0在频域上没有重合区域，所述第三生成单元，用于：The transmission device according to claim 10, wherein if the SSB of the base station and the CORESET 0 of the base station do not have an overlapping area in the frequency domain, the third generating unit is configured to:
    组合所述第一Low-PAPR Sequence和所述第二Low-PAPR Sequence，得到所述第一Additional CRS；其中，所述第一Additional CRS中属于所述第一Low-PAPR Sequence和所述第二Low-PAPR Sequence频域范围外区域，填充有预定数值。Combining the first Low-PAPR Sequence and the second Low-PAPR Sequence to obtain the first Additional CRS; wherein the first Additional CRS belongs to the first Low-PAPR Sequence and the second Low-PAPR Sequence Low-PAPR Sequence The area outside the frequency domain range is filled with a predetermined value.
  15. 一种信号的传输装置，其特征在于，应用于终端，所述信号的传输装置，包括：A signal transmission device, characterized in that, applied to a terminal, the signal transmission device includes:
    接收单元，用于接收基站广播的时域信号；其中，所述时域信号包括第一辅助小区专属参考信号Additional CRS；所述第一Additional CRS利用第一低峰均值功率比序列Low-PAPR Sequence和第二Low-PAPR Sequence生成；a receiving unit, configured to receive a time-domain signal broadcast by a base station; wherein, the time-domain signal includes a first auxiliary cell-specific reference signal Additional CRS; the first Additional CRS utilizes a first low peak-to-average power ratio sequence Low-PAPR Sequence and the second Low-PAPR Sequence is generated;
    第四生成单元，用于采用所述第一Additional CRS中的第一Low-PAPR Sequence的生成方式，生成第三Low-PAPR Sequence，利用从接收的所述时域信号中提取得到SSB对应频域范围内的信号和所述第三Low-PAPR Sequence完成下行同步；The fourth generation unit is used for generating the third Low-PAPR Sequence by using the generation method of the first Low-PAPR Sequence in the first Additional CRS, and using the SSB corresponding frequency domain extracted from the received time domain signal The signal within the range and the third Low-PAPR Sequence complete downlink synchronization;
    第五生成单元，用于采用所述第一Additional CRS中的第二Low-PAPR Sequence的生成方式，生成第四Low-PAPR Sequence；并利用从接收的所述时域信号中的CORESET 0频域范围内的信号和所述第四Low-PAPR Sequence获取上行同步所需的配置信息。The fifth generation unit is used for generating the fourth Low-PAPR Sequence by adopting the generation mode of the second Low-PAPR Sequence in the first Additional CRS; and using the CORESET 0 frequency domain in the received time domain signal The signal within the range and the fourth Low-PAPR Sequence obtain the configuration information required for uplink synchronization.
  16. 根据权利要求15所述的传输装置，其特征在于，所述第四生成单元，包括：The transmission device according to claim 15, wherein the fourth generating unit comprises:
    第四生成子单元，用于生成所述终端的同步广播块SSB的伪随机序列，将所述终端的同步广播块SSB的伪随机序列进行离散傅里叶变换，得到所述第三Low-PAPR Sequence；a fourth generating subunit, configured to generate a pseudo-random sequence of the synchronous broadcast block SSB of the terminal, and perform discrete Fourier transform on the pseudo-random sequence of the synchronous broadcast block SSB of the terminal to obtain the third Low-PAPR Sequence;
    第一信道估计单元，用于利用所述从接收的所述时域信号中提取得到SSB对应频域范围内的信号和所述第三Low-PAPR Sequence进行信道估计，得到信道估计结果，并利用所述信道估计结果解调物理广播信道，得到主***信息MIB；The first channel estimation unit is configured to perform channel estimation by using the signal in the frequency domain range corresponding to the SSB obtained from the received time domain signal and the third Low-PAPR Sequence to obtain the channel estimation result, and using The channel estimation result demodulates the physical broadcast channel to obtain the main system information MIB;
    下行同步单元，用于根据所述MIB完成下行同步。A downlink synchronization unit, configured to complete downlink synchronization according to the MIB.
  17. 根据权利要求15所述的传输装置，其特征在于，所述第五生成单 元，包括：The transmission device according to claim 15, wherein the fifth generating unit comprises:
    第二获取单元，用于根据所述MIB信息，获取所述终端的CORESET 0的配置信息；A second obtaining unit, configured to obtain the configuration information of CORESET 0 of the terminal according to the MIB information;
    第五生成子单元，用于生成所述终端的CORESET 0对应频域范围内的Additional CRS的伪随机序列，将所述终端的CORESET 0对应频域范围内的Additional CRS的伪随机序列进行离散傅里叶变换，得到所述第四Low-PAPR Sequence；The fifth generation subunit is used to generate the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the terminal, and the pseudo-random sequence of the Additional CRS in the frequency domain corresponding to the CORESET 0 of the terminal is subjected to discrete Fu. Liye transform to obtain the fourth Low-PAPR Sequence;
    替换单元，用于将所述第四Low-PAPR Sequence上属于与所述第三Low-PAPR Sequence序列相重合的部分替换为所述第三Low-PAPR Sequence的目标内容，得到第二Additional CRS；其中，所述第三Low-PAPR Sequence中的目标内容为所述第三Low-PAPR Sequence被重合的内容；A replacement unit, configured to replace the part that overlaps with the third Low-PAPR Sequence on the fourth Low-PAPR Sequence with the target content of the third Low-PAPR Sequence to obtain a second Additional CRS; Wherein, the target content in the third Low-PAPR Sequence is the overlapping content of the third Low-PAPR Sequence;
    第二信道估计单元，用于利用所述从接收的所述时域信号中的CORESET 0频域范围内的信号和所述第二Additional CRS进行信道估计，得到所述终端的CORESET 0在频域范围内的频域信道响应；A second channel estimation unit, configured to perform channel estimation by using the signal in the CORESET 0 frequency domain range from the received time domain signal and the second Additional CRS to obtain the CORESET 0 of the terminal in the frequency domain The frequency domain channel response within the range;
    盲检单元，用于在所述终端的CORESET 0的时频资源中，盲检下行控制信息格式1-0；a blind detection unit, configured to blindly detect downlink control information formats 1-0 in the time-frequency resources of CORESET 0 of the terminal;
    第三获取单元，用于若所述盲检单元在所述终端的CORESET 0的时频资源中，盲检所述下行控制信息格式1-0成功，则在所述下行控制信息格式1-0中指示的时频资源对应的物理下行共享信道PDSCH中，获取所述***消息1，并利用所述***消息1获取与上行同步所需的配置信息。a third acquiring unit, configured to: if the blind detection unit succeeds in blindly detecting the downlink control information format 1-0 in the time-frequency resource of the CORESET 0 of the terminal, then the downlink control information format 1-0 In the physical downlink shared channel PDSCH corresponding to the time-frequency resource indicated in , obtain the system message 1, and use the system message 1 to obtain the configuration information required for synchronization with the uplink.
  18. 一种基站，其特征在于，包括：A base station, characterized in that it includes:
    一个或多个处理器；one or more processors;
    存储装置，其上存储有一个或多个程序；a storage device on which one or more programs are stored;
    当所述一个或多个程序被所述一个或多个处理器执行时，使得所述一个或多个处理器实现如权利要求1至6中任一所述的方法。The one or more programs, when executed by the one or more processors, cause the one or more processors to implement a method as claimed in any one of claims 1 to 6.
  19. 一种终端，其特征在于，包括：A terminal, characterized in that it includes:
    一个或多个处理器；one or more processors;
    存储装置，其上存储有一个或多个程序；a storage device on which one or more programs are stored;
    当所述一个或多个程序被所述一个或多个处理器执行时，使得所述一个或多个处理器实现如权利要求7至9中任一所述的方法。The one or more programs, when executed by the one or more processors, cause the one or more processors to implement a method as claimed in any one of claims 7 to 9.
  20. 一种计算机存储介质，其特征在于，其上存储有计算机程序，其 中，所述计算机程序被处理器执行时实现如权利要求1至6中任一所述的方法，或者如权利要求7至9中任一所述的方法。A computer storage medium, characterized in that a computer program is stored thereon, wherein, when the computer program is executed by a processor, the method according to any one of claims 1 to 6, or the method as claimed in any of claims 7 to 9, is implemented. any of the methods described above.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106559206A (en) * 2015-09-30 2017-04-05 中兴通讯股份有限公司 The transmission method and device of synchronizing signal
US20170187563A1 (en) * 2015-12-24 2017-06-29 Lg Electronics Inc. Method for transceiving signal in a wireless communication system and apparatus for the same
CN107231690A (en) * 2016-03-25 2017-10-03 中兴通讯股份有限公司 Method for sending information and device
CN109495413A (en) * 2017-09-11 2019-03-19 ***通信有限公司研究院 The transmission of synchronization signal block, the measurement method of cell quality, base station and terminal
US10291457B2 (en) * 2016-10-28 2019-05-14 Nanchang Coolpad Intellectual Technology Company Limited Information transmission method, a base station and a terminal
CN110519033A (en) * 2019-08-23 2019-11-29 展讯半导体(南京)有限公司 Cell own reference symbol arranging method and device, storage medium, base station, user equipment
CN110719625A (en) * 2019-10-18 2020-01-21 海能达通信股份有限公司 SSB sending method and device, base station and system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106559206A (en) * 2015-09-30 2017-04-05 中兴通讯股份有限公司 The transmission method and device of synchronizing signal
US20170187563A1 (en) * 2015-12-24 2017-06-29 Lg Electronics Inc. Method for transceiving signal in a wireless communication system and apparatus for the same
CN107231690A (en) * 2016-03-25 2017-10-03 中兴通讯股份有限公司 Method for sending information and device
US10291457B2 (en) * 2016-10-28 2019-05-14 Nanchang Coolpad Intellectual Technology Company Limited Information transmission method, a base station and a terminal
CN109495413A (en) * 2017-09-11 2019-03-19 ***通信有限公司研究院 The transmission of synchronization signal block, the measurement method of cell quality, base station and terminal
CN110519033A (en) * 2019-08-23 2019-11-29 展讯半导体(南京)有限公司 Cell own reference symbol arranging method and device, storage medium, base station, user equipment
CN110719625A (en) * 2019-10-18 2020-01-21 海能达通信股份有限公司 SSB sending method and device, base station and system

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