WO2020088636A1 - 信号的发送方法及终端 - Google Patents

信号的发送方法及终端 Download PDF

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Publication number
WO2020088636A1
WO2020088636A1 PCT/CN2019/114966 CN2019114966W WO2020088636A1 WO 2020088636 A1 WO2020088636 A1 WO 2020088636A1 CN 2019114966 W CN2019114966 W CN 2019114966W WO 2020088636 A1 WO2020088636 A1 WO 2020088636A1
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Prior art keywords
ofdm symbol
ssb
synchronization signal
pss
sss
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PCT/CN2019/114966
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English (en)
French (fr)
Inventor
任晓涛
赵锐
郑方政
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电信科学技术研究院有限公司
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Publication of WO2020088636A1 publication Critical patent/WO2020088636A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation

Definitions

  • the present disclosure relates to the field of communication technologies, and in particular, to a signal transmission method and terminal.
  • the PC5 port (Sidelink, direct link) is used for direct communication between the terminal and the terminal.
  • the PC5 port (Sidelink, direct link) is used for direct communication between the terminal and the terminal.
  • the method of establishing synchronization is that one terminal A sends synchronization and broadcast signals, and the other terminal B receives the synchronization and broadcast signals sent by terminal A. Once terminal B receives and demodulates successfully, the two terminals can establish synchronization as the next step. The communication is ready.
  • the synchronization signal of the NR UU port is carried through the SSB block (Synchronization Signal Block, synchronization signal block).
  • Each Slot includes 2 SSBs, each SSB is composed of PSS (Primary Synchronization Signal, primary synchronization signal), SSS (Secondary Synchronization Signal, auxiliary synchronization signal) and PBCH (Physical Physical Broadcast Channel), physical broadcast channel ) Channel composition.
  • PSS Primary Synchronization Signal, primary synchronization signal
  • SSS Secondary Synchronization Signal, auxiliary synchronization signal
  • PBCH Physical Physical Broadcast Channel
  • Physical Broadcast Channel Physical Broadcast Channel
  • the abscissa is the time domain, and each column represents an OFDM symbol.
  • the ordinate is the frequency domain, which is 20RB in the figure.
  • Two SSBs are accommodated in one slot, which are located in OFDM symbols # 2 ⁇ # 5 and # 8 ⁇ # 11.
  • a synchronous broadcast block includes PSS signals and SSS signals that occupy one symbol in the time domain and 12 RBs in the frequency domain, and PBCH signals that occupy 48 RBs in total, and are distributed on 3 OFDM symbols.
  • the SSB of the NR UU port needs to perform beam scanning (Beam Sweeping).
  • the beam scanning refers to that the base station sends the SSB once in each possible beam direction within a certain time interval (5ms). Then the terminal measures the SSB signal strength of each beam and reports the measurement result to the base station. The base station selects the most suitable beam to send data to the terminal according to the measurement result reported by the terminal.
  • the number of directions in which beam scanning is required is also different.
  • the maximum values of SSB beam scanning candidate directions in different carrier frequency ranges are: 4/8/64, and the number of actually configured beam scanning directions cannot exceed this maximum value.
  • NR V2X Sidelink When NR V2X Sidelink is used to send synchronization information, it also needs to use the SSB beam scanning method, so as to ensure that the SSB beam coverage is large enough to ensure better V2X synchronization performance.
  • the sending and receiving parties are terminals, multiple SSBs sent by a sending UE in a Slot may need to be received by multiple different receiving UEs. Because the receiving UEs have different locations, they are different. When the SSB signal arrives at the receiving UE, the change in signal strength of different SSB may be relatively large, and the evaluation shows that the dynamic range of the signal strength can reach 80dB.
  • the embodiments of the present disclosure provide a signal transmission method and a terminal, which solve the problem of an increase in the error rate of SSB detection caused by a large change in the strength of the SSB received signal on the through link.
  • the embodiments of the present disclosure provide the following technical solutions:
  • Embodiments of the present disclosure provide a signal transmission method, including:
  • a synchronization signal block SSB is transmitted; each time slot includes at least two SSBs, and a reference signal occupying at least one orthogonal frequency division multiplexing OFDM symbol is in front of each SSB
  • the SSB is a combination block of the main synchronization signal PSS, the auxiliary synchronization signal SSS and the physical broadcast channel PBCH.
  • the group of time slots includes at least one time slot.
  • the reference signal is a reference signal for automatic gain control or channel estimation.
  • Each SSB includes a primary synchronization signal PSS located on at least one OFDM symbol, a secondary synchronization signal SSS located on at least one OFDM symbol, a physical broadcast channel PBCH located on at least one OFDM symbol, and located on at least one The demodulation reference signal DMRS on the OFDM symbol; or
  • Each SSB includes a primary synchronization signal PSS located on at least one OFDM symbol, a secondary synchronization signal SSS located on at least one OFDM symbol, and a physical broadcast channel P BCH located on at least one OFDM symbol.
  • the PBCH and the SSS are frequency division multiplexed.
  • the OFDM symbol where the DMRS is located is adjacent to the OFDM symbol where the PBCH is located.
  • the OFDM symbol where the PSS is located is adjacent to the OFDM symbol where the DMRS is located or adjacent to the OFDM symbol where the SSS is located.
  • one or three OFDM symbols used for data transmission are spaced between the two SSBs.
  • the PBCH occupies at least 2 OFDM symbols or the PSS occupies at least 2 OFDM symbols.
  • the OFDM symbol occupied by the SSS is located between the PBCH occupies at least 2 OFDM symbols, or the PBCH occupies at least 2 consecutive OFDM symbols;
  • the PSS occupies at least 2 consecutive OFDM symbols.
  • the OFDM symbol where the PSS is located is adjacent to the OFDM symbol where the PBCH is located.
  • the reference signal is the main synchronization signal PSS or the auxiliary synchronization signal SSS.
  • the SSB is a through link synchronization signal block S-SSB
  • the PSS is a through link primary synchronization signal S-PSS
  • the SSS is a through link secondary synchronization signal S-SSS
  • the PBCH is a through link Road physical broadcast channel PSBCH.
  • An embodiment of the present disclosure also provides a terminal, including:
  • the transceiver is used to send a synchronization signal block SSB in each time slot of a group of time slots; each time slot includes at least two SSBs, and at least one orthogonal frequency division multiplexing is occupied in front of each SSB Reference signal of OFDM symbol; the SSB is a combined block of the primary synchronization signal PSS, the secondary synchronization signal SSS and the physical broadcast channel PBCH.
  • Each SSB includes a primary synchronization signal PSS located on at least one OFDM symbol, a secondary synchronization signal SSS located on at least one OFDM symbol, a physical broadcast channel PBCH located on at least one OFDM symbol, and located on at least one The demodulation reference signal DMRS on the OFDM symbol;
  • each SSB includes a primary synchronization signal PSS located on at least one OFDM symbol, a secondary synchronization signal SSS located on at least one OFDM symbol, and a physical broadcast channel P BCH located on at least one OFDM symbol.
  • the SSB is a through link synchronization signal block S-SSB
  • the PSS is a through link primary synchronization signal S-PSS
  • the SSS is a through link secondary synchronization signal S-SSS
  • the PBCH is a through link Road physical broadcast channel PSBCH.
  • An embodiment of the present disclosure also provides a signal transmission device, including:
  • the transceiver module is used to send a synchronization signal block SSB in each time slot of a group of time slots; each time slot includes at least two SSBs, and at least one orthogonal frequency division multiplexing is occupied in front of each SSB Reference signal of OFDM symbol; the SSB is a combined block of the primary synchronization signal PSS, the secondary synchronization signal SSS and the physical broadcast channel PBCH.
  • An embodiment of the present disclosure also provides a terminal, including: a processor configured to perform the following functions: in each time slot of a set of time slots, a synchronization signal block SSB is sent; each time slot includes at least two SSBs In front of each SSB, there is a reference signal occupying at least one orthogonal frequency division multiplexing OFDM symbol; the SSB is a combined block of a primary synchronization signal PSS, a secondary synchronization signal SSS, and a physical broadcast channel PBCH.
  • a processor configured to perform the following functions: in each time slot of a set of time slots, a synchronization signal block SSB is sent; each time slot includes at least two SSBs In front of each SSB, there is a reference signal occupying at least one orthogonal frequency division multiplexing OFDM symbol; the SSB is a combined block of a primary synchronization signal PSS, a secondary synchronization signal SSS, and a physical broadcast channel PBCH.
  • Embodiments of the present disclosure also provide a computer storage medium, including instructions, which when executed on a computer, cause the computer to execute the method as described above.
  • each time slot of a set of time slots a synchronization signal block SSB is sent; each time slot includes at least two SSBs, and at least one orthogonal frequency is occupied in front of each SSB
  • the reference signal of the OFDM symbol is multiplexed. Therefore, it is possible to solve the problem of an increase in the SSB detection error rate caused by a large change in the SSB received signal strength.
  • Figure 1 is a schematic diagram of the design of 5G NR synchronization signal block
  • FIG. 2 is a flowchart of a signal sending method provided by an embodiment of the present disclosure
  • 3 to 18 are schematic diagrams of a design scheme of a transmission pattern of a synchronization signal block in an embodiment of the present disclosure
  • FIG. 19 is a schematic structural diagram of a terminal of the present disclosure.
  • FIG. 20 is a schematic diagram of the reference signal in the transmission pattern of the synchronization signal block being PSS / SSS in the embodiment of the present disclosure.
  • the embodiments of the present disclosure send synchronization signal blocks in the wireless channel, which reduces the SSB detection error rate and improves the SSB coverage.
  • the signal transmission method provided by the embodiments of the present disclosure includes:
  • Step 21 in each time slot of a group of time slots, a synchronization signal block SSB is sent; each time slot includes at least two SSBs, and at least one orthogonal frequency division multiplexing OFDM symbol is occupied in front of each SSB Reference signal; the SSB is a combination block of the main synchronization signal PSS, the auxiliary synchronization signal SSS and the physical broadcast channel PBCH;
  • the reference signal here may be an automatic gain control signal (Automatic Gain Control, AGC) or a channel estimation reference signal; the reference signal may be a primary synchronization signal (PSS) or a secondary synchronization signal (SSS).
  • AGC Automatic Gain Control
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • the set of time slots here includes at least one time slot.
  • the signal transmission method of this embodiment can be applied to the signal transmission of the through link, but is not limited to the signal transmission of the through link.
  • the SSB is an S-SSB (through link synchronization signal block)
  • the PSS is an S-PSS (through link primary synchronization signal).
  • the SSS is S-SSS (Through Link Secondary Synchronization Signal)
  • the PBCH is PSBCH (Through Link Physical Broadcast Channel).
  • an implementation manner of step 21 includes:
  • each S-SSB includes S-PSS (pass-through link primary synchronization signal) located on at least one OFDM symbol, and S-SSS (pass-through link) located on at least one OFDM symbol Secondary synchronization signal), SPBCH (Through Link Physical Broadcast Channel) located on at least one OFDM symbol, and DMRS located on at least one OFDM symbol.
  • S-PSS pass-through link primary synchronization signal
  • S-SSS pass-through link located on at least one OFDM symbol Secondary synchronization signal
  • SPBCH Three Link Physical Broadcast Channel
  • DMRS located on at least one OFDM symbol.
  • each Slot contains 2 S-SSBs.
  • the S-PSS signal is located in OFDM symbol # 1
  • DMRS is located in OFDM symbol # 3
  • PSBCH is located in OFDM symbols # 2 and # 4
  • S-SSS is located in OFDM symbol # 5.
  • the S-PSS signal is located in OFDM symbol # 8
  • DMRS is located in OFDM symbol # 10
  • PSBCH is located in OFDM symbols # 9 and # 11
  • S-SSS is located in OFDM symbol # 12.
  • AGC is located in OFDM symbol # 0 and OFDM symbol # 7.
  • the OFDM symbol #n represents the n + 1th symbol inside a Slot.
  • OFDM symbol # 3 represents the fourth symbol in a slot; the OFDM symbol where the DMRS is located is adjacent to the OFDM symbol where the PSBCH is located.
  • One OFDM symbol is spaced between the two S-SSBs for data service transmission; the PSBCH occupies at least two OFDM symbols.
  • This embodiment adopts the DFT-s-OFDM waveform, covering a long distance; and occupies a narrow bandwidth, which improves the spectrum efficiency of the system.
  • each Slot contains 2 S-SSBs.
  • the S-PSS signal is located in OFDM symbol # 1
  • the DMRS is located in OFDM symbol # 5
  • the PSBCH is located in OFDM symbols # 2 and # 4
  • the S-SSS is located in OFDM symbol # 3.
  • the S-PSS signal is located at OFDM symbol # 8
  • DMRS is located at OFDM symbol # 12
  • PSBCH is located at OFDM symbols # 9 and # 11
  • S-SSS is located at OFDM symbol # 10.
  • AGC is located in OFDM symbol # 0 and OFDM symbol # 7.
  • the OFDM symbol #n represents the n + 1th symbol inside a Slot.
  • OFDM symbol # 3 represents the fourth symbol in a slot; the OFDM symbol where the DMRS is located is adjacent to the OFDM symbol where the PSBCH is located.
  • An OFDM symbol is spaced between the two S-SSBs for data service transmission; the PSBCH occupies at least two OFDM symbols, and the OFDM symbol occupied by the S-SSS is located between the PSBCH occupying at least two OFDM symbols.
  • the advantage of the embodiment is that the DFT-s-OFDM waveform is adopted, the coverage distance is longer; and the occupied bandwidth is narrower, which improves the spectrum efficiency of the system.
  • each Slot contains 2 S-SSBs.
  • the S-PSS signal is located in OFDM symbol # 1
  • DMRS is located in OFDM symbol # 4
  • PSBCH is located in OFDM symbols # 3 and # 5
  • S-SSS is located in OFDM symbol # 2.
  • the S-PSS signal is located at OFDM symbol # 8
  • DMRS is located at OFDM symbol # 11
  • PSBCH is located at OFDM symbols # 10 and # 12
  • S-SSS is located at OFDM symbol # 9.
  • AGC is located in OFDM symbol # 0 and OFDM symbol # 7.
  • the OFDM symbol #n represents the n + 1th symbol inside a Slot.
  • OFDM symbol # 3 represents the fourth symbol in a slot; the OFDM symbol where the DMRS is located is adjacent to the OFDM symbol where the PSBCH is located.
  • An OFDM symbol is spaced between the two S-SSBs for data service transmission; the OFDM symbol where the S-PSS is located is adjacent to the OFDM symbol where the S-SSS is located; the PSBCH occupies at least two OFDM symbol.
  • This embodiment adopts the DFT-s-OFDM waveform, covering a long distance; and occupies a narrow bandwidth, which improves the spectrum efficiency of the system.
  • each Slot contains 2 S-SSBs.
  • the S-PSS signal is located in OFDM symbol # 1
  • the DMRS is located in OFDM symbol # 2
  • the PSBCH is located in OFDM symbols # 3 and # 5
  • the S-SSS is located in OFDM symbol # 4.
  • the S-PSS signal is located in OFDM symbol # 8
  • DMRS is located in OFDM symbol # 9
  • PSBCH is located in OFDM symbols # 10 and # 12
  • S-SSS is located in OFDM symbol # 11.
  • AGC is located in OFDM symbol # 0 and OFDM symbol # 7.
  • the OFDM symbol #n represents the n + 1th symbol inside a Slot.
  • OFDM symbol # 3 represents the fourth symbol in a slot; the OFDM symbol where the DMRS is located is adjacent to the OFDM symbol where the PSBCH is located.
  • An OFDM symbol is spaced between the two S-SSBs for data service transmission; the OFDM symbol where the S-PSS is located is adjacent to the OFDM symbol where the DMRS is located; the PSBCH occupies at least two OFDM symbols , The OFDM symbol occupied by the S-SSS is located between at least two OFDM symbols occupied by the PSBCH.
  • the DFT-s-OFDM waveform is used, which covers a long distance; and the occupied bandwidth is narrow, which improves the spectrum efficiency of the system.
  • each Slot contains 2 S-SSBs.
  • the S-PSS signal is located in OFDM symbol # 1
  • DMRS is located in OFDM symbol # 2
  • PSBCH is located in OFDM symbols # 3 and # 4
  • S-SSS is located in OFDM symbol # 5.
  • the S-PSS signal is located at OFDM symbol # 8
  • DMRS is located at OFDM symbol # 9
  • PSBCH is located at OFDM symbols # 10 and # 11
  • S-SSS is located at OFDM symbol # 12.
  • AGC is located in OFDM symbol # 0 and OFDM symbol # 7.
  • the OFDM symbol #n represents the n + 1th symbol inside a Slot.
  • OFDM symbol # 3 represents the fourth symbol in a slot; the OFDM symbol where the DMRS is located is adjacent to the OFDM symbol where the PSBCH is located.
  • An OFDM symbol is spaced between the two S-SSBs for data service transmission; the OFDM symbol where the S-PSS is located is adjacent to the OFDM symbol where the DMRS is located; the PSBCH occupies at least two consecutive OFDM symbol.
  • This embodiment adopts the DFT-s-OFDM waveform, covering a long distance; and occupies a narrow bandwidth, which improves the spectrum efficiency of the system.
  • each Slot contains 2 S-SSBs.
  • the S-PSS signal is located in OFDM symbol # 1
  • the DMRS is located in OFDM symbol # 5
  • the PSBCH is located in OFDM symbols # 3 and # 4
  • the S-SSS is located in OFDM symbol # 2.
  • the S-PSS signal is located at OFDM symbol # 8
  • DMRS is located at OFDM symbol # 12
  • PSBCH is located at OFDM symbols # 10 and # 11
  • S-SSS is located at OFDM symbol # 9.
  • AGC is located in OFDM symbol # 0 and OFDM symbol # 7.
  • the OFDM symbol #n represents the n + 1th symbol inside a Slot.
  • OFDM symbol # 3 represents the fourth symbol in a slot; the OFDM symbol where the DMRS is located is adjacent to the OFDM symbol where the PSBCH is located.
  • An OFDM symbol is spaced between the two S-SSBs for data service transmission; the OFDM symbol where the S-PSS is located is adjacent to the OFDM symbol where the S-SSS is located; the PSBCH occupies at least two Continuous OFDM symbols.
  • This embodiment adopts the DFT-s-OFDM waveform, covering a long distance; and occupies a narrow bandwidth, which improves the spectrum efficiency of the system.
  • each Slot contains 2 S-SSBs, and the first S-SSB
  • the S-PSS signal is located in OFDM symbol # 1, DMRS is located in OFDM symbol # 2, PSBCH is located in OFDM symbol # 3, and S-SSS is located in OFDM symbol # 4.
  • the S-PSS signal is located in OFDM symbol # 9
  • DMRS is located in OFDM symbol # 10
  • PSBCH is located in OFDM symbol # 11
  • S-SSS is located in OFDM symbol # 12.
  • AGC is located in OFDM symbol # 0 and OFDM symbol # 8.
  • the OFDM symbol #n represents the n + 1th symbol inside a Slot.
  • OFDM symbol # 3 represents the fourth symbol within a slot; the OFDM symbol where the DMRS is located is adjacent to the OFDM symbol where the PSBCH is located, and there are 3 OFDM symbols separated between the two S-SSBs for Transmission of data services.
  • the OFDM symbol where the S-PSS is located is adjacent to the OFDM symbol where the DMRS is located.
  • the DFT-s-OFDM waveform is used, and the coverage distance is relatively long; and there are 3 symbols in the middle of the 2 S-SSBs that can be used for the transmission of delay-sensitive services, which reduces the data transmission delay.
  • each Slot contains 2 S-SSBs.
  • the S-PSS signal is located in OFDM symbol # 1
  • S-SSS is located in OFDM symbol # 2
  • PSBCH is located in OFDM symbol # 3
  • DMRS is located in OFDM symbol # 4.
  • the S-PSS signal is located in OFDM symbol # 9
  • S-SSS is located in OFDM symbol # 10
  • PSBCH is located in OFDM symbol # 11
  • DMRS is located in OFDM symbol # 12.
  • AGC is located in OFDM symbol # 0 and OFDM symbol # 8.
  • the OFDM symbol #n represents the n + 1th symbol inside a Slot.
  • OFDM symbol # 3 represents the fourth symbol in a Slot; the OFDM symbol where the S-PSS is located is adjacent to the OFDM symbol where the S-SSS is located, and the OFDM symbol where the DMRS is located is where the PSBCH is located. OFDM symbols are adjacent. Three OFDM symbols are spaced between the two S-SSBs and used to transmit data services.
  • the DFT-s-OFDM waveform is used, and the coverage distance is relatively long; and there are 3 symbols in the middle of the 2 S-SSBs that can be used for the transmission of delay-sensitive services, which reduces the data transmission delay.
  • each Slot contains 2 S-SSBs.
  • the S-PSS signal is located at OFDM symbol # 1 and # 2
  • the DMRS is located at OFDM symbol # 3
  • the PSBCH is located at OFDM symbol # 4
  • the S-SSS is located at OFDM symbol # 5.
  • the S-PSS signal is located at OFDM symbol # 8 and # 9
  • DMRS is located at OFDM symbol # 10
  • PSBCH is located at OFDM symbol # 11
  • S-SSS is located at OFDM symbol # 12.
  • the OFDM symbol #n represents the n + 1th symbol inside a Slot.
  • OFDM symbol # 3 represents the fourth symbol in a slot; the OFDM symbol where the DMRS is located is adjacent to the OFDM symbol where the PSBCH is located.
  • One OFDM symbol is spaced between the two S-SSBs for transmitting data services; the S-PSS occupies at least two OFDM symbols.
  • This embodiment uses a DFT-s-OFDM waveform, covering a long distance; and the time domain of the main synchronization signal S-PSS is repeated to ensure the synchronization detection performance of the S-PSS.
  • each Slot contains 2 S-SSBs.
  • the S-PSS signal is located at OFDM symbol # 1 and # 2
  • S-SSS is located at OFDM symbol # 3
  • PSBCH is located at OFDM symbol # 4
  • DMRS is located at OFDM symbol # 5.
  • the S-PSS signal is located at OFDM symbol # 8 and # 9
  • S-SSS is located at OFDM symbol # 10
  • PSBCH is located at OFDM symbol # 11
  • DMRS is located at OFDM symbol # 12.
  • the OFDM symbol #n represents the n + 1th symbol inside a Slot.
  • OFDM symbol # 3 represents the fourth symbol in a slot; the OFDM symbol where the DMRS is located is adjacent to the OFDM symbol where the PSBCH is located.
  • An OFDM symbol is spaced between the two S-SSBs for data service transmission; the OFDM symbol where the S-PSS is located is adjacent to the OFDM symbol where the S-SSS is located, and the S-PSS occupies at least at least Two consecutive OFDM symbols.
  • This embodiment uses a DFT-s-OFDM waveform, covering a long distance; and the time domain of the main synchronization signal S-PSS is repeated to ensure the synchronization detection performance of the S-PSS.
  • each S-SSB occupies 4 consecutive symbol.
  • a reference signal occupying one symbol is placed in front of each S-SSB, and this reference signal is used for automatic gain control.
  • the symbols where DMRS and PSBCH are located are in close proximity, ensuring the channel estimation performance of the broadcast signal PSBCH.
  • the frequency domain bandwidth of 50 RBs (resource blocks) also ensures that there are sufficient frequency domain resources on PSBCH symbols to accommodate broadcast information.
  • step 21 includes:
  • each S-SSB includes a direct link primary synchronization signal S-PSS located on at least one OFDM symbol, a direct link secondary synchronization signal S-SSS located on at least one OFDM symbol, The direct link physical broadcast channel PSBCH located on at least 1 OFDM symbol.
  • the waveform used by the S-SSB on the through link is a cyclic prefix orthogonal frequency division multiplexing CP-OFDM waveform, the transmission pattern is adopted.
  • each Slot contains 2 S-SSBs.
  • the S-PSS signal is located in the OFDM symbol # 1
  • the S-SSS is located in the OFDM symbol # 3
  • the PSBCH is located in the OFDM symbols # 2 to # 4
  • the PSBCH and S-SSS signals are frequency-divided on the symbol # 3 Multiplexing
  • the DMRS signal is embedded in the PSBCH RE.
  • the S-PSS signal is located in the OFDM symbol # 9
  • the S-SSS is located in the OFDM symbol # 11
  • the PSBCH is located in the OFDM symbols # 10 ⁇ # 12
  • the PSBCH and S-SSS signals are frequency-divided on the symbol # 11 Multiplexed
  • the DMRS signal is embedded in the PSBCH RE (resource unit).
  • the OFDM symbol #n represents the n + 1th symbol inside a Slot.
  • OFDM symbol # 3 represents the fourth symbol in a slot; the PSBCH and the S-SSS frequency division multiplexing; the DMRS signal is embedded in the PSBCH RE; the two S-SSBs are separated by 3 OFDM Symbol; the OFDM symbol where the S-PSS is located is adjacent to the OFDM symbol where the PSBCH is located.
  • This embodiment occupies less bandwidth, which improves the spectrum efficiency of the system; and there are 3 symbols in the middle of the 2 S-SSBs that can be used for the transmission of delay-sensitive services, reducing the data transmission delay.
  • each Slot contains 2 S-SSBs.
  • the S-PSS signal is located in the OFDM symbol # 1
  • the S-SSS is located in the OFDM symbol # 2
  • the PSBCH is located in the OFDM symbols # 2 to # 4
  • the PSBCH and S-SSS signals are frequency-divided on the symbol # 2 Multiplexing
  • the DMRS signal is embedded in the PSBCH RE.
  • the S-PSS signal is located at the OFDM symbol # 9
  • the S-SSS is located at the OFDM symbol # 10
  • the PSBCH is located at the OFDM symbols # 10 ⁇ # 12
  • the PSBCH and S-SSS signals are frequency-divided on the symbol # 10 Multiplexing
  • the DMRS signal is embedded in the PSBCH RE.
  • the OFDM symbol #n represents the n + 1th symbol inside a Slot.
  • OFDM symbol # 3 represents the fourth symbol in a slot; the PSBCH and the S-SSS frequency division multiplexing; the DMRS signal is embedded in the PSBCH RE; the two S-SSBs are separated by 3 OFDM Symbol; the PSBCH occupies at least 2 OFDM symbols.
  • the advantage of this embodiment is that the occupied bandwidth is small, which improves the spectrum efficiency of the system; and there are 3 symbols in the middle of the 2 S-SSBs that can be used for the transmission of delay-sensitive services, reducing the data transmission delay.
  • each Slot contains 2 S-SSBs.
  • the S-PSS signal is located in the OFDM symbol # 1
  • the S-SSS is located in the OFDM symbol # 3
  • the PSBCH is located in the OFDM symbols # 2 and # 4
  • the DMRS signal is embedded in the PSBCH RE.
  • the S-PSS signal is located in the OFDM symbol # 9
  • the S-SSS is located in the OFDM symbol # 11
  • the PSBCH is located in the OFDM symbols # 10 and # 12
  • the DMRS signal is embedded in the PSBCH RE.
  • the OFDM symbol #n represents the n + 1th symbol inside a Slot.
  • OFDM symbol # 3 represents the fourth symbol in a slot; the DMRS signal is embedded in the PSBCH RE, and the two S-SSBs are separated by 3 OFDM symbols; the PSBCH occupies at least 2 OFDM symbols, S- SSS is located between 2 OFDM symbols occupied by PSBCH.
  • This embodiment occupies less bandwidth, which improves the spectrum efficiency of the system; and there are 3 symbols in the middle of the 2 S-SSBs that can be used for the transmission of delay-sensitive services, reducing the data transmission delay.
  • each Slot contains 2 S-SSBs.
  • the S-PSS signal is located in the OFDM symbol # 1
  • the S-SSS is located in the OFDM symbol # 2
  • the PSBCH is located in the OFDM symbols # 3 and # 4
  • the DMRS signal is embedded in the PSBCH RE.
  • the S-PSS signal is located in the OFDM symbol # 9
  • the S-SSS is located in the OFDM symbol # 10
  • the PSBCH is located in the OFDM symbols # 11 and # 12
  • the DMRS signal is embedded in the PSBCH RE.
  • the OFDM symbol #n represents the n + 1th symbol inside a Slot.
  • OFDM symbol # 3 represents the 4th symbol within a Slot; 3 OFDM symbols are separated between the two S-SSBs; the PSBCH occupies at least 2 OFDM symbols, and the OFDM symbol where the S-PSS is located is The OFDM symbols where the S-SSS is located are adjacent.
  • This embodiment occupies less bandwidth, which improves the spectrum efficiency of the system; and there are 3 symbols in the middle of the 2 S-SSBs that can be used for the transmission of delay-sensitive services, reducing the data transmission delay.
  • each Slot contains 2 S-SSBs.
  • the S-PSS signal is located at OFDM symbol # 1 and # 2
  • S-SSS is located at OFDM symbol # 4
  • PSBCH is located at OFDM symbol # 3 ⁇ # 5
  • PSBCH and S-SSS are located on symbol # 4
  • the signal is frequency-division multiplexed, and the DMRS signal is embedded in the PSBCH RE.
  • the S-PSS signal is located at OFDM symbol # 8 and # 9
  • S-SSS is located at OFDM symbol # 11
  • PSBCH is located at OFDM symbol # 10 ⁇ # 12
  • PSBCH and S-SSS are located on symbol # 11
  • the signal is frequency-division multiplexed, and the DMRS signal is embedded in the PSBCH RE.
  • the OFDM symbol #n represents the n + 1th symbol inside a Slot.
  • OFDM symbol # 3 represents the fourth symbol in a slot; the DMRS signal is embedded in the PSBCH RE, and the two S-SSBs are separated by 1 OFDM symbol; the PSBCH occupies at least 2 OFDM symbols, S- The SSS is located between the 2 OFDM symbols occupied by the PSBCH; the PSBCH and the S-SSS are frequency division multiplexed.
  • the advantage of this embodiment is that the occupied bandwidth is smaller, which improves the spectrum efficiency of the system; and the time domain of the main synchronization signal S-PSS is repeated, which improves the synchronization detection performance of the S-PSS.
  • each Slot contains 2 S-SSBs.
  • the S-PSS signal is located at OFDM symbol # 1 and # 2
  • S-SSS is located at OFDM symbol # 3
  • PSBCH is located at OFDM symbol # 3 ⁇ # 5
  • PSBCH and S-SSS are located on symbol # 3
  • the signal is frequency-division multiplexed, and the DMRS signal is embedded in the PSBCH RE.
  • the S-PSS signal is located at OFDM symbol # 8 and # 9
  • S-SSS is located at OFDM symbol # 10
  • PSBCH is located at OFDM symbol # 10 ⁇ # 12
  • PSBCH and S-SSS are located on symbol # 110
  • the signal is frequency-division multiplexed, and the DMRS signal is embedded in the PSBCH RE.
  • the OFDM symbol #n represents the n + 1th symbol inside a Slot.
  • OFDM symbol # 3 represents the fourth symbol in a slot; the DMRS signal is embedded in the PSBCH RE, and the two S-SSBs are separated by 1 OFDM symbol; the PSBCH occupies at least 2 OFDM symbols; S-PSS occupies at least 2 OFDM symbols, and the PSBCH and the S-SSS are frequency-division multiplexed.
  • the bandwidth occupied by this embodiment is small, which improves the spectrum efficiency of the system; and the time domain of the main synchronization signal S-PSS is repeated, which improves the synchronization detection performance of the S-PSS.
  • a reference signal occupying at least one symbol is added in front of each S-SSB, which is used for automatic gain control or channel estimation, which is helpful for the distance to the S-SSB transmitting terminal in V2X communication
  • different receiving terminals receive different S-SSBs, they respectively perform automatic gain control, thereby reducing the bit error rate of S-SSB detection on Sidelink, improving the coverage distance of the synchronous broadcast block, and enabling as many UEs as possible to access Into the V2X system, which further improves the performance of the V2X communication system.
  • an embodiment of the present disclosure also provides a terminal 190, including:
  • the transceiver 191 is used to send a synchronization signal block SSB in each time slot of a group of time slots; each time slot includes at least two SSBs, and each SSB occupies at least one orthogonal frequency division multiplexing
  • the reference signal of the OFDM symbol is used; the SSB is a combined block of the primary synchronization signal PSS, the secondary synchronization signal SSS and the physical broadcast channel PBCH.
  • the group of time slots includes at least one time slot.
  • the reference signal is a reference signal for automatic gain control or channel estimation.
  • the reference signal may be a primary synchronization signal PSS or a secondary synchronization signal SSS.
  • Each SSB includes a primary synchronization signal PSS located on at least one OFDM symbol, a secondary synchronization signal S-SSS located on at least one OFDM symbol, a physical broadcast channel PBCH located on at least one OFDM symbol, and a location located on at least one OFDM symbol.
  • Demodulation reference signal DMRS on 1 OFDM symbol;
  • each SSB includes a primary synchronization signal PSS located on at least one OFDM symbol, a secondary synchronization signal SSS located on at least one OFDM symbol, and a physical broadcast channel PBCH located on at least one OFDM symbol.
  • the PBCH and the SSS are frequency division multiplexed.
  • the OFDM symbol where the DMRS is located is adjacent to the OFDM symbol where the PBCH is located.
  • the OFDM symbol where the PSS is located is adjacent to the OFDM symbol where the DMRS is located or adjacent to the OFDM symbol where the SSS is located.
  • the PBCH occupies at least 2 OFDM symbols or the PSS occupies at least 2 OFDM symbols.
  • the OFDM symbol occupied by the SSS is located between the PBCH occupies at least 2 OFDM symbols, or the PBCH occupies at least 2 consecutive OFDM symbols;
  • the PSS occupies at least 2 consecutive OFDM symbols.
  • the OFDM symbol where the PSS is located is adjacent to the OFDM symbol where the PBCH is located.
  • the SSB is an S-SSB (pass-through link synchronization signal block)
  • the PSS is an S-PSS (pass-through link primary synchronization signal)
  • the SSS is an S-SSS (pass-through link secondary synchronization signal)
  • the PBCH is PSBCH (Direct Link Physical Broadcast Channel).
  • the terminal may further include: a processor 192, a memory 193, etc., the transceiver 191 and the memory 193, and the transceiver 191 and the processor 192 may be connected through a bus interface, and the function of the processor 192 may also be realized by the transceiver 191, The function of the transceiver 191 may also be implemented by the processor 192.
  • An embodiment of the present disclosure also provides a signal transmission device, including:
  • the processing module is used to send a synchronization signal block SSB in each time slot of a group of time slots; each time slot includes at least two SSBs, and at least one orthogonal frequency division multiplexing is occupied in front of each SSB Reference signal of OFDM symbol; the SSB is a combined block of the primary synchronization signal PSS, the secondary synchronization signal SSS and the physical broadcast channel PBCH.
  • FIGS. 3 to 18 are also applicable to the embodiment of the device, and can also achieve the same technical effect.
  • An embodiment of the present disclosure also provides a terminal, including: a processor configured to perform the following functions:
  • a synchronization signal block SSB is transmitted; each time slot includes at least two SSBs, and a reference signal occupying at least one orthogonal frequency division multiplexing OFDM symbol is in front of each SSB
  • the SSB is a combination block of the main synchronization signal PSS, the auxiliary synchronization signal SSS and the physical broadcast channel PBCH.
  • FIGS. 3 to 18 are also applicable to the embodiment of the device, and can also achieve the same technical effect.
  • Embodiments of the present disclosure also provide a computer storage medium, including instructions, which when executed on a computer, cause the computer to execute the method as described above.
  • each Slot contains 2 SSBs.
  • the S-PSS signal is located at OFDM symbol # 0 and # 1
  • DMRS is located at OFDM symbol # 3
  • PSBCH is located at OFDM symbol # 2 and # 4
  • S-SSS is located at OFDM symbol # 5.
  • the S-PSS signals are located at OFDM symbol # 7 and # 8
  • DMRS is located at OFDM symbol # 10
  • PSBCH is located at OFDM symbol # 9 and # 11
  • S-SSS is located at OFDM symbol # 12.
  • the S-PSS located at symbols # 0 and # 7 can also be used for AGC.
  • a reference signal occupying at least one symbol is added in front of each S-SSB, which is used for automatic gain control or channel estimation, which is helpful for the distance to the S-SSB transmitting terminal in V2X communication
  • different receiving terminals receive different S-SSBs, they respectively perform automatic gain control, thereby reducing the bit error rate of S-SSB detection on Sidelink, improving the coverage distance of the synchronous broadcast block, and enabling as many UEs as possible to access Into the V2X system, which further improves the performance of the V2X communication system.
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a division of logical functions.
  • there may be other divisions for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present disclosure essentially or part of the contribution to the related technology or part of the technical solution can be embodied in the form of a software product, the computer software product is stored in a storage medium, including several
  • the instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present disclosure.
  • the foregoing storage media include various media that can store program codes, such as a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
  • each component or each step can be decomposed and / or recombined.
  • These decompositions and / or recombinations should be regarded as equivalent solutions of the present disclosure.
  • the steps for performing the above-mentioned series of processing can naturally be executed in chronological order in the order described, but it does not necessarily need to be executed in chronological order, and some steps can be executed in parallel or independently of each other.
  • the embodiments described in the embodiments of the present disclosure may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the processing unit can be implemented in one or more application specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing device (DSP Device, DSPD), programmable Logic device (Programmable Logic Device, PLD), field programmable gate array (Field-Programmable Gate Array, FPGA), general-purpose processor, controller, microcontroller, microprocessor, others for performing the functions described in this disclosure Electronic unit or its combination.
  • ASIC Application Specific Integrated Circuits
  • DSP Digital Signal Processing
  • DSP Device digital signal processing device
  • DPD digital signal processing device
  • PLD programmable Logic Device
  • FPGA field programmable gate array
  • controller microcontroller, microprocessor, others for performing the functions described in this disclosure Electronic unit or its combination.
  • the technology described in the embodiments of the present disclosure may be implemented through modules (e.g., procedures, functions, etc.) that perform the functions described in the embodiments of the present disclosure.
  • the software codes can be stored in the memory and executed by the processor.
  • the memory may be implemented in the processor or external to the processor.
  • the purpose of the present disclosure can also be achieved by running a program or a group of programs on any computing device.
  • the computing device may be a well-known general-purpose device. Therefore, the object of the present disclosure can also be achieved only by providing a program product containing program code for implementing the method or device. That is, such a program product also constitutes the present disclosure, and a storage medium storing such a program product also constitutes the present disclosure.
  • the storage medium may be any known storage medium or any storage medium developed in the future. It should also be noted that, in the device and method of the present disclosure, obviously, each component or each step can be decomposed and / or recombined.

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Abstract

公开了一种信号的发送方法及终端，其中，信号的发送方法包括：在一组时隙的每个时隙中，发送同步信号块SSB；每个时隙包括至少两个SSB，每个所述SSB的前面有占用至少一个正交频分复用OFDM符号的参考信号；所述SSB为主同步信号PSS、辅同步信号SSS与物理广播信道的组合块。

Description

信号的发送方法及终端
相关申请的交叉引用
本申请主张在2018年11月2日在中国提交的中国专利申请No.201811302712.3的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，尤其涉及一种信号的发送方法及终端。
背景技术
在5G NR(NR Radio Access，新无线接入技术)系统中,终端与终端之间使用PC5口(Sidelink，直通链路)进行直接通信。在进行业务数据传输之前，首先需要进行通信的两个终端之间在PC5口(Sidelink)建立同步。建立同步的方法就是一个终端A发送同步与广播信号，另外一个终端B接收终端A发送的同步与广播信号，一旦终端B接收并解调成功，这两个终端就能够建立同步，为下一步直接通信做好了准备。
NR UU口的同步信号是通过SSB块(Synchronization Signal Block，同步信号块)携带的。
如图1所示，是5G NR同步广播块的设计示意图。每个Slot(时隙)中包括有2个SSB，每个SSB是由PSS(Primary Synchronization Signal，主同步信号)、SSS(Secondary Synchronization Signal，辅助同步信号)以及PBCH(Physical Broadcast Channel，物理广播信道)信道组成。
图1中，横坐标是时域，每列代表一个OFDM符号。纵坐标是频域，该图中是20RB。一个Slot里容纳了两个SSB，分别位于OFDM符号#2～#5以及#8～#11。一个同步广播块包括有时域占用一个符号并且频域占用12个RB的PSS信号、SSS信号，以及共占用48个RB的PBCH信号，分布在3个OFDM符号上。
为了完成波束测量与波束选择，NR UU口的SSB需要做波束扫描(Beam Sweeping)，波束扫描是指基站在一定的时间区间内(5ms)，将SSB在可能 的各个波束方向上都发送一次，然后终端测量各个波束的SSB信号强度并将测量结果上报给基站，基站根据终端上报的测量结果，选择最合适的波束给终端发送数据。根据不同的载波频率与不同的子载波间隔，需要做波束扫描的方向的数量也是不同的。SSB波束扫描候选方向在不同的载频范围的最大值分别为：4/8/64个，实际配置的波束扫描方向的数量不能超过该最大值。
NR V2X Sidelink做同步信息发送时，也需要采用SSB波束扫描的方式，这样才能保证SSB波束的覆盖范围足够大，从而确保V2X的同步性能较好。
对于V2X Sidelink通信链路而言，由于收发双方都是终端，一个发送UE在一个Slot中所发送的多个SSB可能需要被多个不同的接收UE所接收，由于接收UE的位置不同，那么不同的SSB信号到达接收UE的时候，不同的SSB信号强度的变化可能会比较大，评估表明信号强度的动态范围可达80dB。如果不进行任何处理，如此大的动态范围会导致模数转换器件ADC的量化误差增加，进而导致SSB检测误码率上升，降低了同步广播块SSB的覆盖距离，会导致很多UE无法接入到V2X系统中，影响了V2X通信系统的性能。
发明内容
本公开实施例提供了一种信号的发送方法及终端，解决直通链路上SSB接收信号强度变化大所导致的SSB检测误码率上升的问题。
为解决上述技术问题，本公开的实施例提供如下技术方案：
本公开的实施例提供一种信号的发送方法，包括：
在一组时隙的每个时隙中，发送同步信号块SSB；每个时隙包括至少两个SSB，每个所述SSB的前面有占用至少一个正交频分复用OFDM符号的参考信号；所述SSB为主同步信号PSS、辅同步信号SSS与物理广播信道PBCH的组合块。
其中，所述一组时隙中包括至少一个时隙。
其中，所述参考信号为进行自动增益控制或者信道估计的参考信号。
其中，每个SSB中包括位于至少1个OFDM符号上的主同步信号PSS、位于至少1个OFDM符号上的辅同步信号SSS、位于至少1个OFDM符号上的物理广播信道PBCH以及位于至少1个OFDM符号上的解调参考信号 DMRS；或者
每个SSB中包括位于至少1个OFDM符号上的主同步信号PSS、位于至少1个OFDM符号上的辅同步信号SSS、位于至少1个OFDM符号的物理广播信道P BCH。
其中，所述PBCH与所述SSS频分复用。
其中，所述DMRS所在的OFDM符号与所述PBCH所在的OFDM符号相邻。
其中，所述PSS所在的OFDM符号与所述DMRS所在的OFDM符号相邻或者与所述SSS所在的OFDM符号相邻。
其中，所述两个SSB之间间隔1个或者3个用于传输数据的OFDM符号。
其中，所述两个SSB之间间隔1个OFDM符号时，所述PBCH占用至少2个OFDM符号或者所述PSS占用至少2个OFDM符号。
其中，所述PBCH占用至少2个OFDM符号时，所述SSS占用的OFDM符号位于所述PBCH占用至少2个OFDM符号之间，或者所述PBCH占用至少2个连续的OFDM符号；
所述PSS占用至少2个连续的OFDM符号。
其中，所述PSS所在的OFDM符号与所述PBCH所在的OFDM符号相邻。
其中，所述参考信号为主同步信号PSS或者辅同步信号SSS。
其中，所述SSB为直通链路同步信号块S-SSB，所述PSS为直通链路主同步信号S-PSS，所述SSS为直通链路辅同步信号S-SSS，所述PBCH为直通链路物理广播信道PSBCH。
本公开的实施例还提供一种终端，包括：
收发机，用于在一组时隙的每个时隙中，发送同步信号块SSB；每个时隙包括至少两个SSB，每个所述SSB的前面有占用至少一个正交频分复用OFDM符号的参考信号；所述SSB为主同步信号PSS、辅同步信号SSS与物理广播信道PBCH的组合块。
其中，每个SSB中包括位于至少1个OFDM符号上的主同步信号PSS、 位于至少1个OFDM符号上的辅同步信号SSS、位于至少1个OFDM符号上的物理广播信道PBCH以及位于至少1个OFDM符号上的解调参考信号DMRS；
或者，每个SSB中包括位于至少1个OFDM符号上的主同步信号PSS、位于至少1个OFDM符号上的辅同步信号SSS、位于至少1个OFDM符号的物理广播信道P BCH。
其中，所述SSB为直通链路同步信号块S-SSB，所述PSS为直通链路主同步信号S-PSS，所述SSS为直通链路辅同步信号S-SSS，所述PBCH为直通链路物理广播信道PSBCH。
本公开的实施例还提供一种信号的发送装置，包括：
收发模块，用于在一组时隙的每个时隙中，发送同步信号块SSB；每个时隙包括至少两个SSB，每个所述SSB的前面有占用至少一个正交频分复用OFDM符号的参考信号；所述SSB为主同步信号PSS、辅同步信号SSS与物理广播信道PBCH的组合块。
本公开的实施例还提供一种终端，包括：处理器，被配置为执行如下功能：在一组时隙的每个时隙中，发送同步信号块SSB；每个时隙包括至少两个SSB，每个所述SSB的前面有占用至少一个正交频分复用OFDM符号的参考信号；所述SSB为主同步信号PSS、辅同步信号SSS与物理广播信道PBCH的组合块。
本公开的实施例还提供一种计算机存储介质，包括指令，当所述指令在计算机运行时，使得计算机执行如上所述的方法。
本公开实施例的有益效果是：
本公开的上述实施例中，在一组时隙的每个时隙中，发送同步信号块SSB；每个时隙包括至少两个SSB，每个所述SSB的前面有占用至少一个正交频分复用OFDM符号的参考信号。从而可以解决SSB接收信号强度变化大所导致的SSB检测误码率上升的问题。
附图说明
图1为5G NR同步信号块的设计示意图；
图2为本公开的实施例提供的信号的发送方法流程图；
图3至图18为本公开的实施例中，同步信号块的发送图案的设计方案示意图；
图19为本公开的终端的架构示意图；
图20为本公开的实施例中，同步信号块的发送图案中参考信号为PSS/SSS的示意图。
具体实施方式
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。
本公开的实施例在无线信道中发送同步信号块,降低了SSB检测误码率，提升了SSB的覆盖范围。
如图2所示，本公开的实施例提供的信号的发送方法，包括：
步骤21，在一组时隙的每个时隙中，发送同步信号块SSB；每个时隙包括至少两个SSB，每个所述SSB的前面有占用至少一个正交频分复用OFDM符号的参考信号；所述SSB为主同步信号PSS、辅同步信号SSS与物理广播信道PBCH的组合块；
这里的参考信号可以是自动增益控制信号(Automatic Gain Control，AGC)或者信道估计的参考信号；所述参考信号可以为主同步信号(PSS)或辅同步信号(SSS)。
这里的一组时隙包括至少一个时隙。
该实施例的信号的发送方法，可以应用于直通链路的信号传输中，但不限于直通链路的信号传输。应用于直通链路的信号传输时，本公开的实施例中，所述SSB为S-SSB(直通链路同步信号块)，所述PSS为S-PSS(直通链路主同步信号)，所述SSS为S-SSS(直通链路辅同步信号)，所述PBCH为PSBCH(直通链路物理广播信道)。
以下以直通链路的信号的传输为例进行说明：
本公开的一些具体实施例中，步骤21的一种实现方式包括：
S-SSB的发送图案中：每个S-SSB中包括位于至少1个OFDM符号上的S-PSS(直通链路主同步信号)、位于至少1个OFDM符号上的S-SSS(直通链路辅同步信号)、位于至少1个OFDM符号上的SPBCH(直通链路物理广播信道)以及位于至少1个OFDM符号上的DMRS。可选的，直通链路上所述S-SSB采用的波形为离散傅里叶变换扩频的正交频分复用DFT-s-OFDM波形时，采用该发送图案。
该发送图案的第一种实现方式如图3所示，S-SSB在单个Slot内的分布模式为：每1个Slot里面包含2个S-SSB。第一个S-SSB中S-PSS信号位于OFDM号符号#1，DMRS位于OFDM符号#3，PSBCH位于OFDM符号#2和#4，S-SSS位于OFDM符号#5。第二个S-SSB中S-PSS信号位于OFDM号符号#8，DMRS位于OFDM符号#10，PSBCH位于OFDM符号#9和#11，S-SSS位于OFDM符号#12。AGC位于OFDM符号#0和OFDM符号#7。
该实施例中，OFDM符号#n表示一个Slot内部的第n+1个符号。例如，OFDM符号#3表示一个Slot内部第4个符号；所述DMRS所在的OFDM符号与所述PSBCH所在的OFDM符号相邻。所述两个S-SSB之间间隔1个OFDM符号，用于传输数据业务；所述PSBCH占用至少两个OFDM符号。
该实施例采用了DFT-s-OFDM波形，覆盖距离较远；并且占用的带宽较窄，提升了系统的频谱效率。
该发送图案的第二种实现方式如图4所示，S-SSB在单个Slot内的分布模式为：每1个Slot里面包含2个S-SSB。第一个S-SSB中S-PSS信号位于OFDM号符号#1，DMRS位于OFDM符号#5，PSBCH位于OFDM符号#2和#4，S-SSS位于OFDM符号#3。第二个S-SSB中S-PSS信号位于OFDM号符号#8，DMRS位于OFDM符号#12，PSBCH位于OFDM符号#9和#11，S-SSS位于OFDM符号#10。AGC位于OFDM符号#0和OFDM符号#7。
该实施例中，OFDM符号#n表示一个Slot内部的第n+1个符号。例如，OFDM符号#3表示一个Slot内部第4个符号；所述DMRS所在的OFDM符号与所述PSBCH所在的OFDM符号相邻。所述两个S-SSB之间间隔1个OFDM符号，用于传输数据业务；所述PSBCH占用至少两个OFDM符号， S-SSS占用的OFDM符号位于PSBCH占用至少两个OFDM符号之间。
实施例的优点是采用了DFT-s-OFDM波形，覆盖距离较远；并且占用的带宽较窄，提升了系统的频谱效率。
该发送图案的第三种实现方式如图5所示，S-SSB在单个Slot内的分布模式为：每1个Slot里面包含2个S-SSB。第一个S-SSB中S-PSS信号位于OFDM号符号#1，DMRS位于OFDM符号#4，PSBCH位于OFDM符号#3和#5，S-SSS位于OFDM符号#2。第二个S-SSB中S-PSS信号位于OFDM号符号#8，DMRS位于OFDM符号#11，PSBCH位于OFDM符号#10和#12，S-SSS位于OFDM符号#9。AGC位于OFDM符号#0和OFDM符号#7。
该实施例中，OFDM符号#n表示一个Slot内部的第n+1个符号。例如，OFDM符号#3表示一个Slot内部第4个符号；所述DMRS所在的OFDM符号与所述PSBCH所在的OFDM符号相邻。所述两个S-SSB之间间隔1个OFDM符号，用于传输数据业务；所述S-PSS所在的OFDM符号与所述S-SSS所在的OFDM符号相邻；所述PSBCH占用至少两个OFDM符号。
该实施例采用了DFT-s-OFDM波形，覆盖距离较远；并且占用的带宽较窄，提升了系统的频谱效率。
该发送图案的第四种实现方式如图6所示，S-SSB在单个Slot内的分布模式为：每1个Slot里面包含2个S-SSB。第一个S-SSB中S-PSS信号位于OFDM号符号#1，DMRS位于OFDM符号#2，PSBCH位于OFDM符号#3和#5，S-SSS位于OFDM符号#4。第二个S-SSB中S-PSS信号位于OFDM号符号#8，DMRS位于OFDM符号#9，PSBCH位于OFDM符号#10和#12，S-SSS位于OFDM符号#11。AGC位于OFDM符号#0和OFDM符号#7。
该实施例中，OFDM符号#n表示一个Slot内部的第n+1个符号。例如，OFDM符号#3表示一个Slot内部第4个符号；所述DMRS所在的OFDM符号与所述PSBCH所在的OFDM符号相邻。所述两个S-SSB之间间隔1个OFDM符号，用于传输数据业务；所述S-PSS所在的OFDM符号与所述DMRS所在的OFDM符号相邻；所述PSBCH占用至少两个OFDM符号，S-SSS占用的OFDM符号位于PSBCH占用至少两个OFDM符号之间。
该实施例采用了DFT-s-OFDM波形，覆盖距离较远；并且占用的带宽较 窄，提升了系统的频谱效率。
该发送图案的第五种实现方式如图7所示，S-SSB在单个Slot内的分布模式为：每1个Slot里面包含2个S-SSB。第一个S-SSB中S-PSS信号位于OFDM号符号#1，DMRS位于OFDM符号#2，PSBCH位于OFDM符号#3和#4，S-SSS位于OFDM符号#5。第二个S-SSB中S-PSS信号位于OFDM号符号#8，DMRS位于OFDM符号#9，PSBCH位于OFDM符号#10和#11，S-SSS位于OFDM符号#12。AGC位于OFDM符号#0和OFDM符号#7。
该实施例中，OFDM符号#n表示一个Slot内部的第n+1个符号。例如，OFDM符号#3表示一个Slot内部第4个符号；所述DMRS所在的OFDM符号与所述PSBCH所在的OFDM符号相邻。所述两个S-SSB之间间隔1个OFDM符号，用于传输数据业务；所述S-PSS所在的OFDM符号与所述DMRS所在的OFDM符号相邻；所述PSBCH占用至少两个连续的OFDM符号。
该实施例采用了DFT-s-OFDM波形，覆盖距离较远；并且占用的带宽较窄，提升了系统的频谱效率。
该发送图案的第六种实现方式如图8所示，S-SSB在单个Slot内的分布模式为：每1个Slot里面包含2个S-SSB。第一个S-SSB中S-PSS信号位于OFDM号符号#1，DMRS位于OFDM符号#5，PSBCH位于OFDM符号#3和#4，S-SSS位于OFDM符号#2。第二个S-SSB中S-PSS信号位于OFDM号符号#8，DMRS位于OFDM符号#12，PSBCH位于OFDM符号#10和#11，S-SSS位于OFDM符号#9。AGC位于OFDM符号#0和OFDM符号#7。
该实施例中，OFDM符号#n表示一个Slot内部的第n+1个符号。例如，OFDM符号#3表示一个Slot内部第4个符号；所述DMRS所在的OFDM符号与所述PSBCH所在的OFDM符号相邻。所述两个S-SSB之间间隔1个OFDM符号，用于传输数据业务；所述S-PSS所在的OFDM符号与所述S-SSS所在的OFDM符号相邻；所述PSBCH占用至少两个连续的OFDM符号。
该实施例采用了DFT-s-OFDM波形，覆盖距离较远；并且占用的带宽较窄，提升了系统的频谱效率。
该发送图案的第七种实现方式如图9所示，S-SSB在单个Slot(时隙)内 的分布模式为：每1个Slot里面包含2个S-SSB，第一个S-SSB中S-PSS信号位于OFDM号符号#1，DMRS位于OFDM符号#2，PSBCH位于OFDM符号#3，S-SSS位于OFDM符号#4。第二个S-SSB中S-PSS信号位于OFDM号符号#9，DMRS位于OFDM符号#10，PSBCH位于OFDM符号#11，S-SSS位于OFDM符号#12。AGC位于OFDM符号#0和OFDM符号#8。
该实施例中，OFDM符号#n表示一个Slot内部的第n+1个符号。例如，OFDM符号#3表示一个Slot内部第4个符号；所述DMRS所在的OFDM符号与所述PSBCH所在的OFDM符号相邻，所述两个S-SSB之间间隔3个OFDM符号，用于传输数据业务。所述S-PSS所在的OFDM符号与所述DMRS所在的OFDM符号相邻。
该实施例采用了DFT-s-OFDM波形，覆盖距离较远；并且在2个S-SSB中间有3个符号可以用来做时延敏感业务的传输，降低了数据传输时延。
该发送图案的第八种实现方式如图10所示，S-SSB在单个Slot内的分布模式为：每1个Slot里面包含2个S-SSB。第一个S-SSB中S-PSS信号位于OFDM号符号#1，S-SSS位于OFDM符号#2，PSBCH位于OFDM符号#3，DMRS位于OFDM符号#4。第二个S-SSB中S-PSS信号位于OFDM号符号#9，S-SSS位于OFDM符号#10，PSBCH位于OFDM符号#11，DMRS位于OFDM符号#12。AGC位于OFDM符号#0和OFDM符号#8。
该实施例中，OFDM符号#n表示一个Slot内部的第n+1个符号。例如，OFDM符号#3表示一个Slot内部第4个符号；所述S-PSS所在的OFDM符号与所述S-SSS所在的OFDM符号相邻，所述DMRS所在的OFDM符号与所述PSBCH所在的OFDM符号相邻。所述两个S-SSB之间间隔3个OFDM符号，用于传输数据业务。
该实施例采用了DFT-s-OFDM波形，覆盖距离较远；并且在2个S-SSB中间有3个符号可以用来做时延敏感业务的传输，降低了数据传输时延。
该发送图案的第九种实现方式如图11所示，S-SSB在单个Slot内的分布模式为：每1个Slot里面包含2个S-SSB。第一个S-SSB中S-PSS信号位于OFDM号符号#1和#2，DMRS位于OFDM符号#3，PSBCH位于OFDM符号#4，S-SSS位于OFDM符号#5。第二个S-SSB中S-PSS信号位于OFDM号 符号#8和#9，DMRS位于OFDM符号#10，PSBCH位于OFDM符号#11，S-SSS位于OFDM符号#12。
该实施例中，OFDM符号#n表示一个Slot内部的第n+1个符号。例如，OFDM符号#3表示一个Slot内部第4个符号；所述DMRS所在的OFDM符号与所述PSBCH所在的OFDM符号相邻。所述两个S-SSB之间间隔1个OFDM符号，用于传输数据业务；所述S-PSS占用至少两个OFDM符号。
该实施例采用了DFT-s-OFDM波形，覆盖距离较远；并且主同步信号S-PSS的时域重复，以保证S-PSS的同步检测性能。
该发送图案的第十种实现方式如图12所示，S-SSB在单个Slot内的分布模式为：每1个Slot里面包含2个S-SSB。第一个S-SSB中S-PSS信号位于OFDM号符号#1和#2，S-SSS位于OFDM符号#3，PSBCH位于OFDM符号#4，DMRS位于OFDM符号#5。第二个S-SSB中S-PSS信号位于OFDM号符号#8和#9，S-SSS位于OFDM符号#10，PSBCH位于OFDM符号#11，DMRS位于OFDM符号#12。
该实施例中，OFDM符号#n表示一个Slot内部的第n+1个符号。例如，OFDM符号#3表示一个Slot内部第4个符号；所述DMRS所在的OFDM符号与所述PSBCH所在的OFDM符号相邻。所述两个S-SSB之间间隔1个OFDM符号，用于传输数据业务；所述S-PSS所在的OFDM符号与所述S-SSS所在的OFDM符号相邻，所述S-PSS占用至少两个连续的OFDM符号。
该实施例采用了DFT-s-OFDM波形，覆盖距离较远；并且主同步信号S-PSS的时域重复，以保证S-PSS的同步检测性能。
本公开的上述实施例，S-SSB采用了DFT-s-OFDM波形时，可以在1个Slot里面的14个OFDM符号中，容纳2个S-SSB，每个S-SSB占用连续的4个符号。每个S-SSB的前面放置了占用一个符号的参考信号，该参考信号用来做自动增益控制。DMRS和PSBCH所在符号紧邻，确保了广播信号PSBCH的信道估计性能。50个RB(资源块)的频域带宽也确保了在PSBCH符号上有足够的频域资源容纳广播信息。这两个S-SSB之间还有1或3个OFDM符号可以用作数据传输，比如时延敏感业务的及时传输。
本公开的一些实施例中，步骤21的另一种实现方式包括：
S-SSB发送图案中：每个S-SSB中包括位于至少1个OFDM符号上的直通链路主同步信号S-PSS、位于至少1个OFDM符号上的直通链路辅同步信号S-SSS、位于至少1个OFDM符号的直通链路物理广播信道PSBCH。可选的，直通链路上所述S-SSB采用的波形为循环前缀的正交频分复用CP-OFDM波形时，采用该发送图案。
该发送图案的第一种实现方式如图13所示，S-SSB在单个Slot内的分布模式为：每1个Slot里面包含2个S-SSB。第一个S-SSB中S-PSS信号位于OFDM号符号#1，S-SSS位于OFDM符号#3，PSBCH位于OFDM符号#2～#4，在符号#3上PSBCH与S-SSS信号频分复用，并且DMRS信号嵌入在PSBCH RE中。第二个S-SSB中S-PSS信号位于OFDM号符号#9，S-SSS位于OFDM符号#11，PSBCH位于OFDM符号#10～#12，在符号#11上PSBCH与S-SSS信号频分复用，并且DMRS信号嵌入在PSBCH RE(资源单元)中。
该实施例中，OFDM符号#n表示一个Slot内部的第n+1个符号。例如，OFDM符号#3表示一个Slot内部第4个符号；所述PSBCH与所述S-SSS频分复用；DMRS信号嵌入在PSBCH RE中；所述两个S-SSB之间间隔3个OFDM符号；所述S-PSS所在的OFDM符号与所述PSBCH所在的OFDM符号相邻。
该实施例占用的带宽较小，提升了系统的频谱效率；并且在2个S-SSB中间有3个符号可以用来做时延敏感业务的传输，降低了数据传输时延。
该发送图案的第二种实现方式如图14所示，S-SSB在单个Slot内的分布模式为：每1个Slot里面包含2个S-SSB。第一个S-SSB中S-PSS信号位于OFDM号符号#1，S-SSS位于OFDM符号#2，PSBCH位于OFDM符号#2～#4，在符号#2上PSBCH与S-SSS信号频分复用，并且DMRS信号嵌入在PSBCH RE中。第二个S-SSB中S-PSS信号位于OFDM号符号#9，S-SSS位于OFDM符号#10，PSBCH位于OFDM符号#10～#12，在符号#10上PSBCH与S-SSS信号频分复用，并且DMRS信号嵌入在PSBCH RE中。
该实施例中，OFDM符号#n表示一个Slot内部的第n+1个符号。例如，OFDM符号#3表示一个Slot内部第4个符号；所述PSBCH与所述S-SSS频分复用；DMRS信号嵌入在PSBCH RE中；所述两个S-SSB之间间隔3个 OFDM符号；所述PSBCH占用至少2个OFDM符号。
该实施例的优点是占用的带宽较小，提升了系统的频谱效率；并且在2个S-SSB中间有3个符号可以用来做时延敏感业务的传输，降低了数据传输时延。
该发送图案的第三种实现方式如图15所示，S-SSB在单个Slot内的分布模式为：每1个Slot里面包含2个S-SSB。第一个S-SSB中S-PSS信号位于OFDM号符号#1，S-SSS位于OFDM符号#3，PSBCH位于OFDM符号#2和#4，并且DMRS信号嵌入在PSBCH RE中。第二个S-SSB中S-PSS信号位于OFDM号符号#9，S-SSS位于OFDM符号#11，PSBCH位于OFDM符号#10和#12，并且DMRS信号嵌入在PSBCH RE中。
该实施例中，OFDM符号#n表示一个Slot内部的第n+1个符号。例如，OFDM符号#3表示一个Slot内部第4个符号；DMRS信号嵌入在PSBCH RE中，所述两个S-SSB之间间隔3个OFDM符号；所述PSBCH占用至少2个OFDM符号，S-SSS位于PSBCH占用的2个OFDM符号之间。
该实施例占用的带宽较小，提升了系统的频谱效率；并且在2个S-SSB中间有3个符号可以用来做时延敏感业务的传输，降低了数据传输时延。
该发送图案的第四种实现方式如图16所示，S-SSB在单个Slot内的分布模式为：每1个Slot里面包含2个S-SSB。第一个S-SSB中S-PSS信号位于OFDM号符号#1，S-SSS位于OFDM符号#2，PSBCH位于OFDM符号#3和#4，并且DMRS信号嵌入在PSBCH RE中。第二个S-SSB中S-PSS信号位于OFDM号符号#9，S-SSS位于OFDM符号#10，PSBCH位于OFDM符号#11和#12，并且DMRS信号嵌入在PSBCH RE中。
该实施例中，OFDM符号#n表示一个Slot内部的第n+1个符号。例如，OFDM符号#3表示一个Slot内部第4个符号；所述两个S-SSB之间间隔3个OFDM符号；所述PSBCH占用至少2个OFDM符号，所述S-PSS所在的OFDM符号与所述S-SSS所在的OFDM符号相邻。
该实施例占用的带宽较小，提升了系统的频谱效率；并且在2个S-SSB中间有3个符号可以用来做时延敏感业务的传输，降低了数据传输时延。
该发送图案的第五种实现方式如图17所示，S-SSB在单个Slot内的分布 模式为：每1个Slot里面包含2个S-SSB。第一个S-SSB中S-PSS信号位于OFDM号符号#1和#2，S-SSS位于OFDM符号#4，PSBCH位于OFDM符号#3～#5，在符号#4上PSBCH与S-SSS信号频分复用，DMRS信号嵌入在PSBCH RE中。第二个S-SSB中S-PSS信号位于OFDM号符号#8和#9，S-SSS位于OFDM符号#11，PSBCH位于OFDM符号#10～#12，在符号#11上PSBCH与S-SSS信号频分复用，DMRS信号嵌入在PSBCH RE中。
该实施例中，OFDM符号#n表示一个Slot内部的第n+1个符号。例如，OFDM符号#3表示一个Slot内部第4个符号；DMRS信号嵌入在PSBCH RE中，所述两个S-SSB之间间隔1个OFDM符号；所述PSBCH占用至少2个OFDM符号，S-SSS位于PSBCH占用的2个OFDM符号之间；所述PSBCH与所述S-SSS频分复用。
该实施例的优点是占用的带宽较小，提升了系统的频谱效率；并且主同步信号S-PSS的时域重复，提升了S-PSS的同步检测性能。
该发送图案的第六种实现方式如图18所示，S-SSB在单个Slot内的分布模式为：每1个Slot里面包含2个S-SSB。第一个S-SSB中S-PSS信号位于OFDM号符号#1和#2，S-SSS位于OFDM符号#3，PSBCH位于OFDM符号#3～#5，在符号#3上PSBCH与S-SSS信号频分复用，DMRS信号嵌入在PSBCH RE中。第二个S-SSB中S-PSS信号位于OFDM号符号#8和#9，S-SSS位于OFDM符号#10，PSBCH位于OFDM符号#10～#12，在符号#110上PSBCH与S-SSS信号频分复用，DMRS信号嵌入在PSBCH RE中。
该实施例中，OFDM符号#n表示一个Slot内部的第n+1个符号。例如，OFDM符号#3表示一个Slot内部第4个符号；DMRS信号嵌入在PSBCH RE中，所述两个S-SSB之间间隔1个OFDM符号；所述PSBCH占用至少2个OFDM符号；所述S-PSS占用至少2个OFDM符号，所述PSBCH与所述S-SSS频分复用。
该实施例占用的带宽较小，提升了系统的频谱效率；并且主同步信号S-PSS的时域重复，提升了S-PSS的同步检测性能。
本公开的上述实施例，在每个S-SSB前面增加了至少占用一个符号的参考信号，用来做自动增益控制或信道估计，有助于在V2X通信中，与S-SSB 发送终端距离远近不同的接收终端在接收不同的S-SSB时，分别进行自动增益控制，从而降低了Sidelink上S-SSB检测的误码率，提升了同步广播块的覆盖距离，使得尽可能多的UE接入到V2X系统中，进而提升了V2X通信系统的性能。
如图19所示，本公开的实施例还提供一种终端190，包括：
收发机191，用于在一组时隙的每个时隙中，发送同步信号块SSB；每个时隙包括至少两个SSB，每个所述SSB的前面有占用至少一个正交频分复用OFDM符号的参考信号；所述SSB为主同步信号PSS、辅同步信号SSS与物理广播信道PBCH的组合块。
其中，所述一组时隙中包括至少一个时隙。
所述参考信号为进行自动增益控制或者信道估计的参考信号。
所述参考信号可以为主同步信号PSS或辅同步信号SSS。
其中，每个SSB中包括位于至少1个OFDM符号上的主同步信号PSS、位于至少1个OFDM符号上的辅同步信号S-SSS、位于至少1个OFDM符号上的物理广播信道PBCH以及位于至少1个OFDM符号上的解调参考信号DMRS；
或者，每个SSB中包括位于至少1个OFDM符号上的主同步信号PSS、位于至少1个OFDM符号上的辅同步信号SSS、位于至少1个OFDM符号的物理广播信道PBCH。
所述PBCH与所述SSS频分复用。
所述DMRS所在的OFDM符号与所述PBCH所在的OFDM符号相邻。
所述PSS所在的OFDM符号与所述DMRS所在的OFDM符号相邻或者与所述SSS所在的OFDM符号相邻。
所述两个SSB之间间隔1个或者3个用于传输数据的OFDM符号。
所述两个SSB之间间隔1个OFDM符号时，所述PBCH占用至少2个OFDM符号或者所述PSS占用至少2个OFDM符号。
所述PBCH占用至少2个OFDM符号时，所述SSS占用的OFDM符号位于所述PBCH占用至少2个OFDM符号之间，或者所述PBCH占用至少2个连续的OFDM符号；
所述PSS占用至少2个连续的OFDM符号。
所述PSS所在的OFDM符号与所述PBCH所在的OFDM符号相邻。
所述SSB为S-SSB(直通链路同步信号块)，所述PSS为S-PSS(直通链路主同步信号)，所述SSS为S-SSS(直通链路辅同步信号)，所述PBCH为PSBCH(直通链路物理广播信道)。
需要说明的是，上述图3至图18所示的实施例同样适用于该终端的实施例中，也能达到相同的技术效果。该终端还可以包括：处理器192、存储器193等，收发机191与存储器193，以及收发机191与处理器192均可以通过总线接口通讯连接，处理器192的功能也可以由收发机191实现，收发机191的功能也可以由处理器192实现。
本公开的实施例还提供一种信号的发送装置，包括：
处理模块，用于在一组时隙的每个时隙中，发送同步信号块SSB；每个时隙包括至少两个SSB，每个所述SSB的前面有占用至少一个正交频分复用OFDM符号的参考信号；所述SSB为主同步信号PSS、辅同步信号SSS与物理广播信道PBCH的组合块。
需要说明的是，上述图3至图18所示的实施例同样适用于该装置的实施例中，也能达到相同的技术效果。
本公开的实施例还提供一种终端，包括：处理器，被配置为执行如下功能：
在一组时隙的每个时隙中，发送同步信号块SSB；每个时隙包括至少两个SSB，每个所述SSB的前面有占用至少一个正交频分复用OFDM符号的参考信号；所述SSB为主同步信号PSS、辅同步信号SSS与物理广播信道PBCH的组合块。
需要说明的是，上述图3至图18所示的实施例同样适用于该装置的实施例中，也能达到相同的技术效果。
本公开的实施例还提供一种计算机存储介质，包括指令，当所述指令在计算机运行时，使得计算机执行如上所述的方法。
如图20所示，本公开的上述所有实施例中，参考信号为PSS或者SSS时，每1个Slot里面包含2个SSB。第一个SSB中S-PSS信号位于OFDM 号符号#0和#1，DMRS位于OFDM符号#3，PSBCH位于OFDM符号#2和#4，S-SSS位于OFDM符号#5。第二个SSB中S-PSS信号位于OFDM号符号#7和#8，DMRS位于OFDM符号#10，PSBCH位于OFDM符号#9和#11，S-SSS位于OFDM符号#12。位于符号#0和#7的S-PSS同时还可以用来做AGC使用。
本公开的上述实施例，在每个S-SSB前面增加了至少占用一个符号的参考信号，用来做自动增益控制或信道估计，有助于在V2X通信中，与S-SSB发送终端距离远近不同的接收终端在接收不同的S-SSB时，分别进行自动增益控制，从而降低了Sidelink上S-SSB检测的误码率，提升了同步广播块的覆盖距离，使得尽可能多的UE接入到V2X系统中，进而提升了V2X通信系统的性能。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本公开的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本公开所提供的实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或 者全部单元来实现本实施例方案的目的。
另外，在本公开各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本公开的技术方案本质上或者说对相关技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
此外，需要指出的是，在本公开的装置和方法中，显然，各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本公开的等效方案。并且，执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行，但是并不需要一定按照时间顺序执行，某些步骤可以并行或彼此独立地执行。对本领域的普通技术人员而言，能够理解本公开的方法和装置的全部或者任何步骤或者部件，可以在任何计算装置(包括处理器、存储介质等)或者计算装置的网络中，以硬件、固件、软件或者它们的组合加以实现，这是本领域普通技术人员在阅读了本公开的说明的情况下运用他们的基本编程技能就能实现的。
可以理解的是，本公开实施例描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现，处理单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits，ASIC)、数字信号处理器(Digital Signal Processing，DSP)、数字信号处理设备(DSP Device，DSPD)、可编程逻辑设备(Programmable Logic Device，PLD)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本公开所述功能的其它电子单元或其组合中。
对于软件实现，可通过执行本公开实施例所述功能的模块(例如过程、函 数等)来实现本公开实施例所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
因此，本公开的目的还可以通过在任何计算装置上运行一个程序或者一组程序来实现。所述计算装置可以是公知的通用装置。因此，本公开的目的也可以仅仅通过提供包含实现所述方法或者装置的程序代码的程序产品来实现。也就是说，这样的程序产品也构成本公开，并且存储有这样的程序产品的存储介质也构成本公开。显然，所述存储介质可以是任何公知的存储介质或者将来所开发出来的任何存储介质。还需要指出的是，在本公开的装置和方法中，显然，各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本公开的等效方案。并且，执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行，但是并不需要一定按照时间顺序执行。某些步骤可以并行或彼此独立地执行。
以上所述的是本公开的可选实施方式，应当指出对于本技术领域的普通人员来说，在不脱离本公开所述的原理前提下还可以作出若干改进和润饰，这些改进和润饰也在本公开的保护范围内。

Claims (19)

  1. 一种信号的发送方法，包括：
    在一组时隙的每个时隙中，发送同步信号块SSB；每个时隙包括至少两个SSB，每个所述SSB的前面有占用至少一个正交频分复用OFDM符号的参考信号；所述SSB为主同步信号PSS、辅同步信号SSS与物理广播信道PBCH的组合块。
  2. 根据权利要求1所述的信号的发送方法，其中，所述一组时隙中包括至少一个时隙。
  3. 根据权利要求1所述的信号的发送方法，其中，所述参考信号为进行自动增益控制或者信道估计的参考信号。
  4. 根据权利要求1所述的信号的发送方法，其中，每个SSB中包括位于至少1个OFDM符号上的主同步信号PSS、位于至少1个OFDM符号上的辅同步信号SSS、位于至少1个OFDM符号上的物理广播信道PBCH以及位于至少1个OFDM符号上的解调参考信号DMRS；或者每个SSB中包括位于至少1个OFDM符号上的主同步信号PSS、位于至少1个OFDM符号上的辅同步信号SSS、位于至少1个OFDM符号的物理广播信道PBCH。
  5. 根据权利要求4所述的信号的发送方法，其中，
    所述PBCH与所述SSS频分复用。
  6. 根据权利要求4所述的信号的发送方法，其中，
    所述DMRS所在的OFDM符号与所述PBCH所在的OFDM符号相邻。
  7. 根据权利要求4所述的信号的发送方法，其中，
    所述PSS所在的OFDM符号与所述DMRS所在的OFDM符号相邻或者与所述SSS所在的OFDM符号相邻。
  8. 根据权利要求4所述的信号的发送方法，其中，
    所述两个SSB之间间隔1个或者3个用于传输数据的OFDM符号。
  9. 根据权利要求8所述的信号的发送方法，其中，
    所述两个SSB之间间隔1个OFDM符号时，所述PBCH占用至少2个OFDM符号或者所述PSS占用至少2个OFDM符号。
  10. 根据权利要求9所述的信号的发送方法，其中，
    所述PBCH占用至少2个OFDM符号时，所述SSS占用的OFDM符号位于所述PBCH占用至少2个OFDM符号之间，或者所述PBCH占用至少2个连续的OFDM符号；
    所述PSS占用至少2个连续的OFDM符号。
  11. 根据权利要求4所述的信号的发送方法，其中，
    所述PSS所在的OFDM符号与所述PBCH所在的OFDM符号相邻。
  12. 根据权利要求1所述的信号的发送方法，其中，所述参考信号为主同步信号PSS或者辅同步信号SSS。
  13. 根据权利要求1至12中任一项所述的信号的发送方法，其中，
    所述SSB为直通链路同步信号块S-SSB，所述PSS为直通链路主同步信号S-PSS，所述SSS为直通链路辅同步信号S-SSS，所述PBCH为直通链路物理广播信道PSBCH。
  14. 一种终端，包括：
    收发机，用于在一组时隙的每个时隙中，发送同步信号块SSB；每个时隙包括至少两个SSB，每个所述SSB的前面有占用至少一个正交频分复用OFDM符号的参考信号；所述SSB为主同步信号PSS、辅同步信号SSS与物理广播信道PBCH的组合块。
  15. 根据权利要求14所述的终端，其中，
    每个SSB中包括位于至少1个OFDM符号上的主同步信号PSS、位于至少1个OFDM符号上的辅同步信号SSS、位于至少1个OFDM符号上的物理广播信道PBCH以及位于至少1个OFDM符号上的解调参考信号DMRS；
    或者，每个SSB中包括位于至少1个OFDM符号上的主同步信号PSS、位于至少1个OFDM符号上的辅同步信号SSS、位于至少1个OFDM符号的物理广播信道PBCH。
  16. 根据权利要求15所述的信号的终端，其中，
    所述SSB为直通链路同步信号块S-SSB，所述PSS为直通链路主同步信号S-PSS，所述SSS为直通链路辅同步信号S-SSS，所述PBCH为直通链路物理广播信道PSBCH。
  17. 一种信号的发送装置，包括：
    收发模块，用于在一组时隙的每个时隙中，发送同步信号块S-SSB；每个时隙包括至少两个SSB，每个所述SSB的前面有占用至少一个正交频分复用OFDM符号的参考信号；所述SSB为主同步信号PSS、辅同步信号SSS与物理广播信道PBCH的组合块。
  18. 一种终端，其中，包括：处理器，被配置为执行如下功能：在一组时隙的每个时隙中，发送同步信号块SSB；每个时隙包括至少两个SSB，每个所述SSB的前面有占用至少一个正交频分复用OFDM符号的参考信号；所述SSB为主同步信号PSS、辅同步信号SSS与物理广播信道PBCH的组合块。
  19. 一种计算机存储介质，其中，包括指令，当所述指令在计算机运行时，使得计算机执行如权利要求1至13中任一项所述的方法。
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