WO2020088637A1

WO2020088637A1 - Signal sending method, and terminal

Info

Publication number: WO2020088637A1
Application number: PCT/CN2019/114967
Authority: WO
Inventors: 任晓涛; 郑方政; 赵锐
Original assignee: 电信科学技术研究院有限公司
Priority date: 2018-11-02
Filing date: 2019-11-01
Publication date: 2020-05-07
Also published as: CN111147213B; CN111147213A

Abstract

Disclosed are a signal sending method, and a terminal. The signal sending method comprises: in each slot among a group of slots, sending a synchronization signal block (SSB), wherein each slot comprises at least two SSBs; a secondary synchronization signal (SSS) in each of the SSBs is subjected to frequency-division multiplexing with a demodulation reference signal (DMRS) on at least one OFDM symbol; and the SSB is a combination block of a primary synchronization signal (PSS), the secondary synchronization signal (SSS) and a physical broadcast channel (PBCH).

Description

Signal transmission method and terminal

Cross-reference of related applications

This application claims the priority of Chinese Patent Application No. 201811303661.6 filed in China on November 2, 2018, the entire contents of which are hereby incorporated by reference.

Technical field

The present disclosure relates to the field of communication technologies, and in particular, to a signal transmission method and terminal.

Background technique

In a 5G NR (NR Radio Access, new wireless access technology) vehicle-to-vehicle (V2X) system, a PC5 port (Sidelink) is used for direct communication between the terminal and the terminal. Before performing business data transmission, it is necessary to establish synchronization between the two terminals that are communicating at the PC5 port. 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 (slot) carries 2 SSB blocks, and PSS (Primary Synchronization Signal) and SSS (Secondary Synchronization Signal) have no time-domain repetition mechanism.

Before the UE prepares to perform service transmission on the through link, it first needs to achieve synchronization on the through link. In order to expand the coverage of the synchronization signal, it is necessary to repeat the time domain of the PSS / SSS signal to enhance the detection performance of the synchronization signal.

As shown in Figure 1, it is a schematic diagram of R14 synchronous broadcast information design. The abscissa is the time domain, and each column represents an OFDM symbol. The ordinate is the frequency domain, which is 6RB in this figure. A Slot contains a synchronization signal block (SSB). A synchronization signal block includes S-PSS (Sidelink Primary Synchronization Signal), S-SSS (Sidelink Secondary Synchronization Signal), direct link secondary synchronization Signal), PSBCH (Physical Sidelink Broadcast Channel), and the necessary DMRS (Demodulation Reference Signal, demodulation reference signal).

In order to complete beam measurement and beam selection, 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. According to different carrier frequencies and different subcarrier intervals, 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.

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 synchronization period of LTE V2X is 160ms, and at most 3 synchronization subframes can be configured in each synchronization period. For NR V2X, the number of synchronized subframes may increase, but in order to ensure that the service transmission has sufficient time, the number of synchronized subframes will also be very limited.

In addition, in order to expand the coverage of the synchronization signal, it may be necessary to repeat the time domain of the S-PSS and S-SSS signals, which will occupy more time domain symbols, so if you continue to reuse the R14 mechanism, each slot Only one SSB block can be carried. There is only one SSB in each slot, which will result in a longer time for SSB beam scanning, so that the time available for service transmission on Sidelink will become shorter, affecting the timeliness and available resources of service transmission on Sidelink , Leading to an increase in the latency of service transmission on Sidelink and a reduction in available resources.

Summary of the invention

Embodiments of the present disclosure provide a signal sending method and terminal, which can avoid the problems of increased service transmission delay and reduced available resources on the through link.

To solve the above technical problems, the embodiments of the present disclosure provide the following technical solutions:

Embodiments of the present disclosure provide a signal transmission method, including:

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, and the secondary synchronization signal SSS and the demodulation reference signal DMRS in each SSB are in at least one OFDM symbol Frequency division multiplexing; the SSB is a combined block of the main synchronization signal PSS, the auxiliary synchronization signal SSS and the physical broadcast channel PBCH.

Wherein, the group of time slots includes at least one time slot.

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.

Wherein, the OFDM symbol where the DMRS is located is adjacent to the OFDM symbol where the PBCH is located.

Wherein, the OFDM symbol where the PSS is located is adjacent to the OFDM symbol where the DMRS is located, or the OFDM symbol where the SSS is located, or the OFDM symbol where the PBCH is located.

Among them, there are 0, 1, or 3 OFDM symbols used to transmit data between two adjacent SSBs.

Wherein, the PBCH occupies at least 2 OFDM symbols or the PSS occupies at least 2 OFDM symbols or the SSS occupies at least 2 OFDM symbols.

Wherein, when the PBCH occupies at least 2 OFDM symbols, the OFDM symbols occupied by the SSS or the OFDM symbols occupied by the DMRS are located between the PBCH occupying at least 2 OFDM symbols, or the PBCH occupying at least 2 Consecutive OFDM symbols;

The PSS occupies at least 2 consecutive OFDM symbols.

The SSB is a direct link synchronization signal block S-SSB, the PSS is a direct link primary synchronization signal S-PSS, the SSS is a direct link secondary synchronization signal S-SSS, and the PBCH is a direct link 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 set of time slots; each time slot includes at least two SSBs, and the secondary synchronization signal SSS and the demodulation reference signal DMRS in each SSB Frequency division multiplexing on at least one 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 signal transmission device, including:

The processing module is used to send an upper synchronization signal block SSB in each time slot of a group of time slots; each time slot includes at least two SSBs, and the secondary synchronization signal SSS and demodulation reference signal in each SSB The DMRS is frequency-division multiplexed on at least one 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 , The secondary synchronization signal SSS and the demodulation reference signal DMRS in each SSB are frequency-division multiplexed on at least one 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 .

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.

The beneficial effects of the embodiments of the present disclosure are:

In the above embodiments of the present disclosure, by transmitting a synchronization signal block SSB in each time slot of a set of time slots; each time slot includes at least two SSBs, and the secondary synchronization signal SSS in each of the SSBs and the solution The modulation reference signal DMRS is frequency-division multiplexed on at least one OFDM symbol; the SSB is a combined block of the synchronization signal and the physical broadcast channel PBCH. The secondary synchronization signal SSS and the demodulation reference signal DMRS are used for frequency division multiplexing on at least one OFDM symbol for transmission, which helps to accommodate more SSBs in a slot, which can reduce the time taken for beam scanning , Reserve more time for the service transmission on the through link, reduce the delay of the service transmission on the through link, and increase the available resources for the service transmission on the through link.

BRIEF DESCRIPTION

Figure 1 is a schematic diagram of the design of 5G NR synchronization signal block;

2 is a flowchart of a signal sending method provided by an embodiment of the present disclosure;

3 to 10 are schematic diagrams of a design scheme of a transmission pattern of a synchronization signal block in an embodiment of the present disclosure;

11 is a schematic structural diagram of a terminal of the present disclosure;

FIG. 12 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.

detailed description

Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

An embodiment of the present disclosure proposes a method for sending synchronous broadcast information, which is used to send synchronization and broadcast signals in a wireless channel, which reduces the time taken by beam scanning and reserves more time for service transmission.

As shown in FIG. 2, an embodiment of the present disclosure provides a signal transmission method, including:

Step 21: 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, and the secondary synchronization signal SSS and the demodulation reference signal DMRS in each SSB are at least Frequency division multiplexing on one OFDM symbol (that is, there is at least one OFDM symbol with SSS and DMRS signals distributed on it, but the two occupy different subcarriers); the SSB is the main synchronization signal PSS, the secondary synchronization signal SSS and the physical The combined block of the broadcast channel PBCH.

The group of time slots includes at least one time slot. Optionally, a reference signal occupying at least one orthogonal frequency division multiplexing OFDM symbol is in front of each SSB; 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 PSS or SSS.

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. When applied to the signal transmission of the through link, in the embodiment of the present disclosure, the SSB is an S-SSB (through link synchronization signal block), and the PSS is an S-PSS (through link primary synchronization signal). The SSS is S-SSS (Through Link Secondary Synchronization Signal), and the PBCH is PSBCH (Through Link Physical Broadcast Channel).

The following uses the signal transmission of the through link as an example:

In some specific embodiments of the present disclosure, an implementation manner of step 21 includes:

In the S-SSB transmission pattern: each S-SSB includes a direct link primary synchronization signal S-PSS located on at least one OFDM symbol, and a direct link secondary synchronization signal S-SSS located on at least one OFDM symbol , A direct link physical broadcast channel PSBCH located on at least one OFDM symbol and a demodulation reference signal DMRS located on at least one OFDM symbol. Optionally, when the bandwidth occupied by the synchronization signal block is 50RB, the transmission pattern is adopted.

The first implementation of the transmission pattern is shown in Figure 3. The distribution pattern of S-SSB in a single slot is:

Each Slot contains 3 S-SSBs. In the first S-SSB, the S-PSS signal is located in OFDM symbol # 1, the PSBCH is located in OFDM symbol # 2, and S-SSS and DMRS are located in OFDM symbol # 3 using frequency division multiplexing. In the second S-SSB, the S-PSS signal is located in OFDM symbol # 5, the PSBCH is located in OFDM symbol # 6, and S-SSS and DMRS are located in OFDM symbol # 7 using frequency division multiplexing. In the third S-SSB, the S-PSS signal is located in the OFDM symbol # 10, the PSBCH is located in the OFDM symbol # 11, and the S-SSS and DMRS are located in the OFDM symbol # 12 using frequency division multiplexing.

In this embodiment, the OFDM symbol #n represents the n + 1th symbol inside a Slot. For example, OFDM symbol # 3 represents the fourth symbol within a slot; the DMRS and the S-SSS are frequency-division multiplexed; the first SS-SSB and the second SS-SSB are separated by 0 for transmission OFDM symbol of data, that is, the first SS-SSB is adjacent to the second SS-SSB, and the second S-SSB and the third S-SSB are separated by one OFDM symbol for data transmission; the S- The OFDM symbol where the PSS is located is adjacent to the OFDM symbol where the PSBCH is located.

This embodiment uses a transmission bandwidth of 50RB, and the number of S-SSBs contained in one slot is large; and there is a symbol between the second S-SSB and the third S-SSB that can be used for time. Delay the transmission of sensitive services, reducing the data transmission delay.

The second implementation of the transmission pattern is shown in Figure 4. The distribution pattern of S-SSB in a single slot is:

Each Slot contains 3 S-SSBs. In the first S-SSB, the S-PSS signal is located in OFDM symbol # 1, the PSBCH is located in OFDM symbol # 3, and S-SSS and DMRS are located in OFDM symbol # 2 using frequency division multiplexing. In the second S-SSB, the S-PSS signal is located in OFDM symbol # 5, the PSBCH is located in OFDM symbol # 7, and S-SSS and DMRS are located in OFDM symbol # 6 using frequency division multiplexing. In the third S-SSB, the S-PSS signal is located at OFDM symbol # 10, the PSBCH is located at OFDM symbol # 12, and S-SSS and DMRS are located at OFDM symbol # 11 using frequency division multiplexing.

In this embodiment, the OFDM symbol #n represents the n + 1th symbol inside a Slot. For example, OFDM symbol # 3 represents the fourth symbol within a slot; the DMRS and the S-SSS are frequency-division multiplexed; the first SS-SSB and the second SS-SSB are separated by 0 for transmission OFDM symbol of data, that is, the first SS-SSB is adjacent to the second SS-SSB, and the second SS-SSB and the third SS-SSB are separated by one OFDM symbol for data transmission; The OFDM symbol where the S-PSS is located is adjacent to the OFDM symbol where the S-SSS is located.

The third implementation of the transmission pattern is shown in Figure 5. The distribution pattern of S-SSB in a single slot is:

Each Slot contains 2 S-SSBs. In the first S-SSB, the S-PSS signals are located at OFDM symbol # 1 and # 2, the PSBCH is located at OFDM symbol # 3, and S-SSS and DMRS are located at OFDM symbols # 4 and # 5 using frequency division multiplexing. In the second S-SSB, S-PSS signals are located at OFDM symbol # 8 and # 9, PSBCH is located at OFDM symbol # 10, and S-SSS and DMRS are located at OFDM symbols # 11 and # 12 using frequency division multiplexing.

In this embodiment, the OFDM symbol #n represents the n + 1th symbol inside a Slot. For example, OFDM symbol # 3 represents the fourth symbol within a slot; the DMRS and the S-SSS are frequency-division multiplexed, and the two S-SSBs are separated by one OFDM symbol for data transmission; the S -PSS occupies two consecutive OFDM symbols, the DMRS occupies two consecutive OFDM symbols, the OFDM symbol where the S-PSS is located is adjacent to the OFDM symbol where the PSBCH is located.

In this embodiment, the S-PSS and S-SSS symbols are repeated, and the detection performance of the S-PSS and S-SSS is relatively good; and there is one symbol between the two S-SSBs for delay The transmission of sensitive services reduces the data transmission delay.

The fourth implementation of the transmission pattern is shown in Figure 6. The distribution pattern of S-SSB in a single slot is:

Each Slot contains 2 S-SSBs. In the first S-SSB, the S-PSS signals are located at OFDM symbol # 1 and # 2, the PSBCH is located at OFDM symbol # 5, and S-SSS and DMRS are located at OFDM symbols # 3 and # 4 using frequency division multiplexing. In the second S-SSB, S-PSS signals are located at OFDM symbol # 8 and # 9, PSBCH is located at OFDM symbol # 12, and S-SSS and DMRS are located at OFDM symbols # 10 and # 11 using frequency division multiplexing.

In this embodiment, the OFDM symbol #n represents the n + 1th symbol inside a Slot. For example, OFDM symbol # 3 represents the fourth symbol within a slot; the DMRS and the S-SSS are frequency-division multiplexed, and the two S-SSBs are separated by one OFDM symbol for data transmission; the S -PSS occupies two consecutive OFDM symbols, the DMRS occupies two consecutive OFDM symbols, the OFDM symbol where the S-PSS is located is adjacent to the OFDM symbol where the DMRS is located.

In some specific embodiments of the present disclosure, another implementation manner of step 21 includes:

In the S-SSB transmission pattern: each S-SSB includes a direct link primary synchronization signal S-PSS located on at least one OFDM symbol, and a direct link secondary synchronization signal S-SSS located on at least one OFDM symbol , A direct link physical broadcast channel PSBCH located on at least one OFDM symbol and a demodulation reference signal DMRS located on at least two OFDM symbols. Optionally, when the bandwidth occupied by the synchronization signal block is 25 RB, the transmission pattern is adopted.

The first implementation of the transmission pattern is shown in Figure 7. The distribution pattern of S-SSB in a single slot is:

Each Slot contains 2 S-SSBs. The S-PSS signal in the first S-SSB is located in OFDM symbol # 1, PSBCH is located in OFDM symbols # 2 and # 4, S-SSS and DMRS are located in OFDM symbol # 3 using frequency division multiplexing, and there is another The column DMRS occupies the symbol # 5. In the second S-SSB, the S-PSS signal is located in OFDM symbol # 8, PSBCH is located in OFDM symbols # 9 and # 11, S-SSS and DMRS are located in OFDM symbol # 10 using frequency division multiplexing, and there is another The column DMRS occupies the symbol # 12.

In this embodiment, the OFDM symbol #n represents the n + 1th symbol inside a Slot. For example, OFDM symbol # 3 represents the fourth symbol within a slot; the DMRS and the S-SSS are frequency-division multiplexed, and the two S-SSBs are separated by one OFDM symbol for data transmission; the S -The OFDM symbol occupied by the PSS is adjacent to the OFDM symbol occupied by the PSBCH; the PSBCH occupies 2 OFDM symbols, and the OFDM symbol occupied by the S-SSS is located between the two OFDM symbols occupied by the PSBCH.

In this embodiment, a transmission bandwidth of 25 RB is used, and the spectrum efficiency of the system is high; and there is one symbol in the middle of the two S-SSBs that can be used for transmission of delay-sensitive services, which reduces the data transmission delay.

The second implementation of the transmission pattern is shown in Figure 8. The distribution pattern of S-SSB in a single slot is:

Each Slot contains 2 S-SSBs. In the first S-SSB, the S-PSS signal is located in OFDM symbol # 1, PSBCH is located in OFDM symbols # 3 and # 4, S-SSS and DMRS are located in OFDM symbol # 2 using frequency division multiplexing. The column DMRS occupies the symbol # 5. In the second S-SSB, the S-PSS signal is located in OFDM symbol # 8, PSBCH is located in OFDM symbols # 10 and # 11, S-SSS and DMRS are located in OFDM symbol # 9 by frequency division multiplexing, and there is another The column DMRS occupies the symbol # 12.

In this embodiment, the OFDM symbol #n represents the n + 1th symbol inside a Slot. For example, OFDM symbol # 3 represents the fourth symbol within a slot; the DMRS and the S-SSS are frequency-division multiplexed, and the two S-SSBs are separated by one OFDM symbol for data transmission; the S -The OFDM symbol occupied by the PSS is adjacent to the OFDM symbol occupied by the S-SSS; the PSBCH occupies 2 consecutive OFDM symbols.

The third implementation of the transmission pattern is shown in Figure 9. The distribution pattern of S-SSB in a single slot is:

Each Slot contains 2 S-SSBs. In the first S-SSB, the S-PSS signals are located in OFDM symbols # 1 and # 2, the PSBCH are located in OFDM symbols # 3 and # 5, and S-SSS and DMRS are located in OFDM symbol # 4 using frequency division multiplexing. In the second S-SSB, the S-PSS signals are located at OFDM symbol # 8 and # 9, the PSBCH is located at OFDM symbol # 10 and # 12, and S-SSS and DMRS are located at OFDM symbol # 11 using frequency division multiplexing.

In this embodiment, the OFDM symbol #n represents the n + 1th symbol inside a Slot. For example, OFDM symbol # 3 represents the 4th symbol in a Slot; the DMRS and the S-SSS are frequency-division multiplexed, and the two S-SSBs are separated by one OFDM symbol for data transmission; the S -PSS occupies 2 consecutive OFDM symbols, the PSBCH occupies 2 OFDM symbols, and the OFDM symbol occupied by the S-SSS is located between the 2 OFDM symbols occupied by the PSBCH.

In this embodiment, a transmission bandwidth of 25 RB is used, and the spectrum efficiency of the system is high; and the S-PSS symbol repetition method is used for transmission, and the detection performance of the S-PSS is relatively good; and there is one between the two S-SSBs. Symbols can be used to transmit delay-sensitive services, reducing data transmission delay.

The fourth implementation of the transmission pattern is shown in Figure 10. The distribution pattern of S-SSB in a single slot is:

Each Slot contains 2 S-SSBs. In the first S-SSB, the S-PSS signal is located in OFDM symbol # 1, PSBCH is located in OFDM symbols # 2 and # 5, and S-SSS and DMRS are located in OFDM symbols # 3 and # 4 using frequency division multiplexing. In the second S-SSB, the S-PSS signal is located at OFDM symbol # 8, the PSBCH is located at OFDM symbols # 9 and # 12, and S-SSS and DMRS are located at OFDM symbols # 10 and # 11 using frequency division multiplexing.

In this embodiment, the OFDM symbol #n represents the n + 1th symbol inside a Slot. For example, OFDM symbol # 3 represents the fourth symbol within a slot; the DMRS and the S-SSS are frequency-division multiplexed, and the two S-SSBs are separated by one OFDM symbol for data transmission; the S -The OFDM symbol occupied by the PSS is adjacent to the OFDM symbol occupied by the PSBCH, the PSBCH occupies 2 OFDM symbols, the S-SSS occupies 2 consecutive OFDM symbols, and the S-SSS occupies 2 consecutive OFDM symbols located at the Between 2 OFDM symbols occupied by PSBCH.

In this embodiment, a transmission bandwidth of 25 RB is used, and the spectrum efficiency of the system is high; and S-SSS symbol repetition is used for transmission, and the detection performance of S-SSS is relatively good; and there is one in the middle of two S-SSBs. Symbols can be used to transmit delay-sensitive services, reducing data transmission delay.

The above embodiments of the present disclosure adopt Sidelink secondary synchronization signal S-SSS and demodulation reference signal DMRS to be transmitted by frequency division multiplexing on at least one OFDM symbol, thereby helping to accommodate more S in one slot -SSB, which can reduce the time taken by beam scanning, reserve more time for service transmission on the through link, reduce the delay of service transmission on the through link, and increase the availability of service transmission on the through link Resources.

As shown in FIG. 11, an embodiment of the present disclosure also provides a terminal 110, including:

The transceiver 111 is used to send an upper synchronization signal block SSB in each time slot of a group of time slots; each time slot includes at least two SSBs, and the secondary synchronization signal SSS and demodulation reference in each SSB The signal DMRS is frequency-division multiplexed on at least one 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.

Wherein, the group of time slots includes at least one time slot. Optionally, a reference signal occupying at least one orthogonal frequency division multiplexing OFDM symbol is in front of each SSB; the reference signal is a reference signal for automatic gain control or channel estimation.

The PSS occupies at least 2 consecutive OFDM symbols.

It should be noted that the embodiments shown in FIG. 3 to FIG. 10 are also applicable to the embodiment of the terminal, and can also achieve the same technical effect. The terminal may further include: a processor 112, a memory 113, etc., the transceiver 111 and the memory 113, and both the transceiver 111 and the processor 112 may be connected through a bus interface, and the function of the processor 112 may also be realized by the transceiver 111. The function of the transceiver 111 may also be realized by the processor 112.

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 the secondary synchronization signal SSS and the demodulation reference signal DMRS in each SSB Frequency division multiplexing on at least one 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.

It should be noted that the above embodiments shown in FIGS. 3 to 10 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: 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 , The secondary synchronization signal SSS and the demodulation reference signal DMRS in each SSB are frequency-division multiplexed on at least one 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 . The above embodiments shown in FIGS. 3 to 10 are also applicable to the embodiments of the terminal, and can also achieve the same technical effect.

As shown in FIG. 12, in all the above embodiments of the present disclosure, when the reference signal is PSS or SSS, each Slot contains 2 SSBs. In the first SSB, 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, and S-SSS is located at OFDM symbol # 5. In the second SSB, the S-PSS signal is located at OFDM symbol # 7 and # 8, the DMRS is located at OFDM symbol # 10, the PSBCH is located at OFDM symbol # 9 and # 11, and the S-SSS is located at OFDM symbol # 12. The S-PSS located at symbols # 0 and # 7 can also be used for AGC.

The above-mentioned embodiments of the present disclosure use the secondary synchronization signal S-SSS and the demodulation reference signal DMRS to perform frequency division multiplexing on at least one OFDM symbol for transmission, thereby helping to accommodate more SSBs in one slot. Furthermore, the time taken by the beam scanning can be reduced, more time is reserved for the service transmission on the through link, the delay of the service transmission on the through link is reduced, and the available resources for the service transmission on the through link are increased.

Those of ordinary skill in the art may realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application of the technical solution and design constraints. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present disclosure.

Those skilled in the art can clearly understand that for the convenience and conciseness of the description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

In the embodiments provided by the present disclosure, it should be understood that the disclosed device and method may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a division of logical functions. In actual implementation, 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. In addition, 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.

In addition, 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.

If 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. Based on such an understanding, the technical solution of the present disclosure essentially or part of the contribution to the existing technology or part of the technical solution may be embodied in the form of a software product, the computer software product is stored in a storage medium, including Several 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.

In addition, it should be pointed out that, in the device and method of the present disclosure, obviously, 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. Moreover, 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. For those of ordinary skill in the art, all or any steps or components of the methods and devices of the present disclosure can be understood, and can be implemented in hardware, firmware in any computing device (including a processor, a storage medium, etc.) or a network of computing devices , Software, or a combination thereof, which can be achieved by those of ordinary skill in the art using their basic programming skills after reading the description of the present disclosure.

It can be understood that the embodiments described in the embodiments of the present disclosure may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, 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.

For software implementation, the technology described in the embodiments of the present disclosure may be implemented through modules (eg, 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.

Therefore, 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. Obviously, the storage medium may be any well-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. These decompositions and / or recombinations should be regarded as equivalent solutions of the present disclosure. Moreover, the steps for performing the above-mentioned series of processing can naturally be performed in chronological order in the order described, but it does not necessarily need to be performed in chronological order. Certain steps can be performed in parallel or independently of each other.

The above is an optional embodiment of the present disclosure. It should be noted that those of ordinary skill in the art can make several improvements and retouching without departing from the principles described in the present disclosure. Within the scope of this disclosure.

Claims

A signal transmission method, including:

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, and the secondary synchronization signal SSS and the demodulation reference signal DMRS in each SSB are in at least one OFDM symbol Frequency division multiplexing; the SSB is a combined block of the main synchronization signal PSS, the auxiliary synchronization signal SSS and the physical broadcast channel PBCH.
The signal transmission method according to claim 1, wherein the set of time slots includes at least one time slot.
The signal transmission method according to claim 1, wherein 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 at least one OFDM symbol The physical broadcast channel PBCH on the symbol and the demodulation reference signal DMRS located on at least one OFDM symbol.
The signal transmission method according to claim 3, wherein the OFDM symbol where the DMRS is located is adjacent to the OFDM symbol where the PBCH is located.
The signal transmission method according to claim 3, wherein 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 or the OFDM where the PBCH is located Symbols are adjacent.
The signal transmission method according to claim 3, wherein 0, 1, or 3 OFDM symbols used to transmit data are spaced between two adjacent SSBs.
The signal transmission method according to claim 3, wherein the PBCH occupies at least 2 OFDM symbols or the PSS occupies at least 2 OFDM symbols or the SSS occupies at least 2 OFDM symbols.
The signal transmission method according to claim 7, wherein when the PBCH occupies at least 2 OFDM symbols, the OFDM symbol occupied by the SSS or the OFDM symbol occupied by the DMRS is located at least 2 OFDM symbols occupied by the PBCH Between, or, the PBCH occupies at least 2 consecutive OFDM symbols;

The PSS occupies at least 2 consecutive OFDM symbols.
The signal transmission method according to any one of claims 1 to 8, wherein

The SSB is a direct link synchronization signal block S-SSB, the PSS is a direct link primary synchronization signal S-PSS, the SSS is a direct link secondary synchronization signal S-SSS, and the PBCH is a direct link physical Broadcast channel PSBCH.
A terminal, including:

The transceiver is used to send a synchronization signal block SSB in each time slot of a set of time slots; each time slot includes at least two SSBs, and the secondary synchronization signal SSS and the demodulation reference signal DMRS in each SSB Frequency division multiplexing on at least one 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.
The terminal according to claim 10, wherein each SSB includes a primary synchronization signal PSS on at least one OFDM symbol, a secondary synchronization signal SSS on at least one OFDM symbol, Physical broadcast channel PBCH and demodulation reference signal DMRS located on at least one OFDM symbol.
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 the secondary synchronization signal SSS and the demodulation reference signal DMRS in each SSB Frequency division multiplexing on at least one 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.
A terminal includes: 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, each of the SSBs The secondary synchronization signal SSS and the demodulation reference signal DMRS are frequency-division multiplexed on at least one OFDM symbol; the SSB is a combined block of the primary synchronization signal PSS, the secondary synchronization signal SSS and the physical broadcast channel.
A computer storage medium including instructions, wherein when the instructions are run on a computer, the computer is caused to perform the method according to any one of claims 1 to 9.