CN111417079B

CN111417079B - Synchronous broadcast information sending and detecting method and device

Info

Publication number: CN111417079B
Application number: CN201910017245.8A
Authority: CN
Inventors: 任晓涛; 赵锐; 郑方政
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2019-01-08
Filing date: 2019-01-08
Publication date: 2022-02-22
Anticipated expiration: 2039-01-08
Also published as: CN111417079A; WO2020143432A1

Abstract

The application discloses a method and a device for sending and detecting synchronous broadcast information, wherein the method comprises the following steps: the first device generates a through link-synchronization signal and a physical broadcast channel block S-SSB; the S-SSB at least comprises a direct link-primary synchronization signal S-PSS, a direct link-secondary synchronization signal S-SSS and a physical direct link broadcast channel PSBCH signal, and does not comprise a demodulation reference signal DMRS; the first equipment sends the S-SSB; the method has the advantage of having the same S-SSB under the CP-OFDM waveform and the DFT-S-OFDM waveform.

Description

Synchronous broadcast information sending and detecting method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for sending and detecting synchronous broadcast information.

Background

In a new 5G Radio Access (NR) intelligent networking automobile technology (V2X) system, a near-field Communication Port 5 (PC 5) is used for direct Communication between terminals. Before the service data transmission is carried out, synchronization is established between two terminals which need to communicate at first at a port of the PC 5. The method for establishing synchronization is that one terminal A sends synchronization and broadcast signals, the other terminal B receives the synchronization and broadcast signals sent by the terminal A, once the terminal B successfully receives and demodulates, the two terminals can establish synchronization, and preparation is made for the next step of direct communication.

In the direct link (Sidelink) communication of the V2X system, a Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM) waveform may be adopted, or a Discrete Fourier Transform spread Orthogonal Frequency Division Multiplexing (DFT-S-OFDM) waveform may also be adopted, and due to the limitation of data Multiplexing under the DFT-S-OFDM waveform, different direct link-Synchronization Signal and Physical Broadcast Channel Block (S-SSB) need to be designed for different waveforms, which may bring complexity of S-SSB design and complexity of standard making, and complexity of implementation of subsequent products.

Disclosure of Invention

The embodiment of the application provides a method and a device for sending and detecting synchronous broadcast information, which are used for enabling S-SSBs generated by first equipment to at least comprise S-PSS, S-SSS and PSBCH signals in V2X communication, and do not comprise Demodulation Reference signals (DMRS), so that the same S-SSBs are realized under CP-OFDM and DFT-S-OFDM waveforms.

In a first aspect, a method for sending synchronized broadcast information is provided, including: the first device generates a through link-synchronization signal and a physical broadcast channel block S-SSB; wherein the S-SSB comprises at least a direct link-primary synchronization signal (S-PSS), a direct link-secondary synchronization signal (S-SSS) and a physical direct link broadcast channel (PSBCH) signal, and does not comprise a demodulation reference signal (DMRS); the first device sends the S-SSB.

Optionally, the S-SSS is for demodulating the PSBCH signal.

Optionally, the sending, by the first device, the S-SSB includes: the first device sends two S-SSBs in a time slot, a data transmission area is formed between symbols occupied by the two S-SSBs, and the data transmission area at least comprises two symbols.

Optionally, the data transmission region and the S-SSB located in front of the data transmission region belong to different receiving devices, and then the first symbol in the data transmission region is used for automatic gain control AGC.

Optionally, the S-PSS and the S-SSS in the S-SSB occupy 1 symbol and the PSBCH signal in the S-SSB occupies 2 symbols, respectively.

Optionally, the symbols occupied by the S-PSS and the S-SSS are not adjacent, and the 2 symbols occupied by the PSBCH signal are not adjacent.

Optionally, a first symbol of the S-SSB is occupied by the S-PSS, a second symbol of the S-SSB is occupied by the PSBCH signal, a third symbol of the S-SSB is occupied by the S-SSS, and a fourth symbol of the S-SSB is occupied by the PSBCH signal; or, a first symbol in the S-SSB is occupied by the PSBCH signal, a second symbol in the S-SSB is occupied by the S-SSS, a third symbol in the S-SSB is occupied by the PSBCH signal, and a fourth symbol in the S-SSB is occupied by the S-PSS.

Optionally, the S-SSB further comprises an AGC signal occupying one symbol, the AGC occupied symbol preceding the symbols used for transmitting the S-PSS, the S-SSS and the PSBCH signal.

Optionally, before the first device sends the S-SSB, the method further includes: the first device transmits the AGC signal, the AGC signal occupying one symbol.

Optionally, the sending, by the first device, the S-SSB includes: the first device sends the S-SSB through a through link, wherein the through link is a through link adopting an orthogonal frequency division multiplexing (CP-OFDM) waveform with a cyclic prefix, or an orthogonal frequency division multiplexing (DFT-S-OFDM) waveform with discrete Fourier transform spread spectrum.

Optionally, the first device is a terminal device.

In a second aspect, a method for detecting synchronous broadcast information is provided, including: the second equipment receives a direct link-synchronization signal and a physical broadcast channel block S-SSB, wherein the S-SSB at least comprises a direct link-primary synchronization signal S-PSS, a direct link-secondary synchronization signal S-SSS and a physical direct link broadcast channel PSBCH signal, and does not comprise a demodulation reference signal DMRS; the second device detects the S-SSB.

Optionally, the detecting, by the second device, the synchronized broadcast information in the S-SSB includes: the second device demodulates the PSBCH signal in the S-SSB according to the S-SSS in the S-SSB.

Optionally, the receiving, by the second device, the S-SSB includes: the second device receives two S-SSBs in one time slot, and a data transmission area is formed between symbols occupied by the two S-SSBs, and the data transmission area at least comprises two symbols.

Optionally, the data transmission region and the S-SSB located in front of the data transmission region belong to different transmitting devices, and then the first symbol in the data transmission region is used for automatic gain control AGC.

Optionally, before the second device receives the S-SSB, the method further includes: the second device receives the AGC signal, which occupies one symbol.

Optionally, the receiving, by the second device, the S-SSB includes: the second device receives the S-SSB through a through link, where the through link is a through link that uses an orthogonal frequency division multiplexing CP-OFDM waveform with a cyclic prefix, or a through link that uses an orthogonal frequency division multiplexing DFT-S-OFDM waveform with a discrete Fourier transform spread spectrum.

Optionally, the second device is a terminal device.

In a third aspect, an apparatus is provided, comprising: a generating unit for generating a through link-synchronization signal and a physical broadcast channel block S-SSB; wherein the S-SSB comprises at least a direct link-primary synchronization signal (S-PSS), a direct link-secondary synchronization signal (S-SSS) and a physical direct link broadcast channel (PSBCH) signal, and does not comprise a demodulation reference signal (DMRS); and the sending unit is used for sending the S-SSB.

In a fourth aspect, there is provided an apparatus comprising: a receiving unit, configured to receive a direct link-synchronization signal and a physical broadcast channel block S-SSB, where the S-SSB includes at least a direct link-primary synchronization signal S-PSS, a direct link-secondary synchronization signal S-SSS, and a physical direct link broadcast channel PSBCH signal, and does not include a demodulation reference signal DMRS; and the detection unit is used for detecting the synchronous broadcast information in the S-SSB.

In a fifth aspect, a communication apparatus is provided, including: a processor, a memory, and a transceiver; the processor is configured to read a program in the memory and execute the method according to any one of the first aspect.

In a sixth aspect, a communication apparatus is provided, including: a processor, a memory, and a transceiver; the processor is configured to read a program in the memory and execute the method according to any one of the second aspects.

In a seventh aspect, there is provided a computer-readable storage medium having stored thereon computer-executable instructions for causing the computer to perform the method of any of the above first aspects.

In an eighth aspect, there is provided a computer-readable storage medium having stored thereon computer-executable instructions for causing the computer to perform the method of any of the second aspects above.

In the above embodiments of the present application, the first device generates an S-SSB including at least S-PSS, S-SSS, and PSBCH signals, but not DMRS, and transmits the S-SSB; the S-SSB designed in the way is irrelevant to the waveform, so that the same S-SSB is realized under two waveforms of CP-OFDM and DFT-S-OFDM, the complexity of S-SSB design is reduced, and the time frequency resource occupied by the S-SSB is saved; when the second device detects the received synchronous broadcast information in the S-SSB, the second device can demodulate the PSBCH signal according to the S-SSS because the S-SSB does not comprise the DMRS, so that the demodulation complexity of the second device can be reduced, the error rate of the PSBCH signal and the resource utilization rate of the S-SSB are improved, the realization is simple, and the power resource is saved.

Drawings

FIG. 1 is a diagram of S-SSB under a CP-OFDM waveform in an embodiment of the present application;

FIG. 2 is a diagram of S-SSB under DFT-S-OFDM waveform in the embodiment of the present application;

fig. 3 is a flowchart of a method for sending a synchronized broadcast message according to an embodiment of the present application;

fig. 4 is a flowchart of a method for detecting synchronization broadcast information according to an embodiment of the present application;

fig. 5 is a schematic diagram of a timeslot distribution provided in embodiment 1 of the present application;

fig. 6 is a schematic diagram of a timeslot distribution provided in embodiment 1 of the present application;

fig. 7 is a schematic diagram of a timeslot distribution provided in embodiment 2 of the present application;

fig. 8 is a schematic diagram of a timeslot distribution provided in embodiment 2 of the present application;

fig. 9 is a schematic diagram of a timeslot distribution provided in embodiment 3 of the present application;

fig. 10 is a schematic diagram of a timeslot distribution provided in embodiment 4 of the present application;

FIG. 11 is a schematic diagram of an S-SSB distribution provided in example 5 of the present application;

FIG. 12 is a schematic structural diagram of an apparatus provided in an embodiment of the present application;

fig. 13 is a schematic structural diagram of an apparatus provided in an embodiment of the present application;

fig. 14 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

(1) "first" and "second" are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence.

(2) A "first device" and a "second device" are terminal devices, which may refer to devices that provide voice and/or data connectivity to a user, handheld devices having wireless connection capability, or other processing devices connected to a wireless modem. The names of the terminal devices may also be different in different systems, for example, in a 5G system, the terminal devices may be referred to as User Equipments (UEs). Wireless terminal devices, which may be mobile terminal devices such as mobile telephones (or "cellular" telephones) and computers with mobile terminal devices, e.g., mobile devices that may be portable, pocket, hand-held, computer-included, or vehicle-mounted, communicate with one or more core networks via the RAN. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in this embodiment of the present application.

The following detailed description of embodiments of the present application will be made with reference to the accompanying drawings.

In the 5G NR V2X system, terminals communicate directly with each other using a PC5 port. Before the service data transmission is carried out, synchronization is established between two terminals which need to communicate at first at a port of the PC 5. The method for establishing synchronization is that one terminal A sends synchronization and broadcast signals, the other terminal B receives the synchronization and broadcast signals sent by the terminal A, once the terminal B successfully receives and demodulates, the two terminals can establish synchronization, and preparation is made for next step of direct communication, wherein the synchronization and broadcast signals are carried through S-SSB.

Referring to FIGS. 1 and 2, the S-SSB under CP-OFDM waveform and the S-SSB under DFT-S-OFDM waveform are illustrated respectively.

As shown, the abscissa is the time domain, and each column represents one Orthogonal Frequency Division Multiplexing (OFDM) symbol. The ordinate is the frequency domain, which in this figure is 25 Resource Blocks (RBs). Two S-SSBs are accommodated in a Slot (Slot), a data transmission region is formed between time-frequency resources occupied by the two S-SSBs, the data transmission region comprises data or DMRS, an Automatic Gain Control (AGC) signal occupies a first OFDM symbol, and a Guard Period (GP) occupies a last OFDM symbol. One S-SSB includes a direct link-Primary Synchronization Signal (S-PSS), a direct link-Secondary Synchronization Signal (S-SSS), a Physical direct link Broadcast Channel (PSBCH), and DMRS.

As shown in fig. 1 and fig. 2, the S-SSB under the two waveforms is obviously different, and the main difference is that the DMRS signals are mapped differently, and the DMRS signals under the CP-OFDM waveform are embedded in the PSBCH signal, while the DMRS signals under the DFT-S-OFDM waveform occupy one symbol separately.

For the V2X Sidelink communication link, different S-SSBs need to be designed for different waveforms because the communication link may use CP-OFDM waveform or DFT-S-OFDM waveform, which has the limitation of data multiplexing. This introduces complexity into the design of the S-SSB and the specification of the standard, and complexity into the implementation of subsequent products.

In order to solve the above problem, an embodiment of the present application proposes a method for transmitting synchronization broadcast information, in which a terminal generates an S-SSB including at least an S-PSS, an S-SSS, and a PSBCH signal but not a DMRSD, and transmits the S-SSB; the S-SSB designed in the way is irrelevant to the adopted waveform, namely the same S-SSB is provided under the CP-OFDM waveform and the DFT-S-OFDM waveform, so that the complexity of S-SSB design and the complexity of standard formulation are reduced.

Fig. 3 is a flowchart of a method for sending a synchronized broadcast message according to an embodiment of the present application.

As shown, the process includes:

s301: the first device generates an S-SSB.

Wherein, the S-SSB at least comprises S-PSS, S-SSS and PSBCH signals, but does not comprise DMRS, and the S-SSS is used for demodulating the PSBCH signals.

In practical applications, the first device may send two identical S-SSBs in one timeslot, where a data transmission region is located between time-frequency resources occupied by the two S-SSBs, and the data transmission region includes at least two symbols.

For the data transmission area, if the data transmission area and the S-SSB positioned in front of the data transmission area belong to the same user for receiving, AGC training is not needed; if the data transmission region and the S-SSB located in front of the data transmission region belong to different terminal reception, AGC training is required, namely, the first symbol in the data transmission region is used for AGC.

Optionally, the S-PSS and the S-SSS in the S-SSB respectively occupy 1 symbol, the PSBCH signal in the S-SSB occupies 2 symbols, the symbols occupied by the S-PSS and the symbols occupied by the S-SSS are not adjacent, and the 2 symbols occupied by the PSBCH signal are not adjacent. Specifically, a first symbol in S-SSB is occupied by S-PSS, a second symbol in S-SSB is occupied by PSBCH signal, a third symbol in S-SSB is occupied by S-SSS, and a fourth symbol in S-SSB is occupied by PSBCH signal; or, the first symbol in the S-SSB is occupied by the PSBCH signal, the second symbol in the S-SSB is occupied by the S-SSS, the third symbol in the S-SSB is occupied by the PSBCH signal, and the fourth symbol in the S-SSB is occupied by the S-PSS.

Optionally, the S-SSB generated by the first device comprises an AGC signal occupying one symbol and the symbol used for transmitting the AGC signal precedes the symbols used for transmitting the S-PSS, S-SSS and PSBCH signals.

Optionally, the first device further needs to transmit an AGC signal before transmitting the S-SSB, the AGC signal occupying one symbol that precedes the symbols transmitting the S-PSS, S-SSS and PSBCH signals.

S302: the first device transmits the S-SSB.

The first equipment sends the S-SSB carrying the synchronous broadcast information to the receiving end, so that the receiving end detects the synchronous broadcast information in the S-SSB, and further synchronization is established to prepare for next direct communication.

Based on the same technical concept, the embodiment of the present application further provides a method for detecting synchronous broadcast information, which can detect the synchronous broadcast information in the S-SSB sent in the foregoing embodiment.

Fig. 4 is a flowchart of a method for detecting synchronization broadcast information according to an embodiment of the present application.

S401: the second device receives the S-SSB.

Wherein, the S-SSB at least comprises S-PSS, S-SSS and PSBCH signals but not DMRS, and the time-frequency resource occupation positions of the S-PSS, S-SSS and PSBCH in the S-SSB are consistent with the previous embodiment.

Optionally, the S-SSB received by the second device comprises an AGC signal occupying one symbol and preceding the symbol used for transmission of the S-PSS, S-SSS and PSBCH signals.

Optionally, the second device receives an AGC signal, wherein the AGC signal occupies one symbol before the symbols for transmitting the S-PSS, S-SSS and PSBCH signals.

S402: the second device detects the synchronized broadcast information in the S-SSB.

And the second equipment demodulates the synchronous broadcast information carried in the S-SSB, and if the demodulation is successful, the second equipment establishes synchronization with a sending end sending the S-SSB so as to prepare for the next step of direct communication.

In S402, the second device uses the S-SSS in the S-SSB to perform channel estimation and demodulates the PSBCH signal by using the channel estimation value because the S-SSB received by the second device does not include the DMRS, so that the demodulation complexity of the second device can be reduced, the error rate of the PSBCH signal and the resource utilization rate of the S-SSB can be improved, the implementation is simple, and the power resource can be saved.

In the above embodiments of the present application, the first device generates an S-SSB including at least S-PSS, S-SSS, and PSBCH signals, but not DMRS, and transmits the S-SSB; the S-SSB designed in the way is irrelevant to the waveform, so that the same S-SSB is realized under two waveforms of CP-OFDM and DFT-S-OFDM, the complexity of S-SSB design is reduced, and the time frequency resource occupied by the S-SSB is saved; when the second device detects the received synchronous broadcast information in the S-SSB, the second device can demodulate the PSBCH signal according to the S-SSS because the S-SSB does not comprise the DMRS, so that the demodulation complexity of the terminal can be reduced, the error rate of the PSBCH signal and the resource utilization rate of the S-SSB are improved, the realization is simple, and the power resource is saved.

The following description will take an example in which one slot includes 2S-SSBs and a data transmission region occupies 3 OFDM symbols.

Example 1: referring to fig. 5, a schematic diagram of the distribution of the next slot of the CP-OFDM waveform is shown; as shown, for the first S-SSB, the S-PSS occupies symbol #1, the S-SSS occupies symbol #3, and the PSBCH signal occupies symbols #2 and # 4; for the second S-SSB, the S-PSS occupies symbol #9, the S-SSS occupies symbol #11, and the PSBCH signal occupies symbols #10 and # 12.

Symbols #5 to #7 are data transmission regions, and if the data transmission region and the S-SSB located in front of the data transmission region belong to the same user for reception, the symbol #5 does not need to be used for AGC training, as shown in fig. 5; if the data transmission region and the S-SSB located in front of the data transmission region belong to different terminals for reception, then the symbol #5 needs AGC training, and it is possible to drop the symbol #5 for rate re-matching, and the distribution diagram of the slot is shown in fig. 6.

The S-SSB can also comprise an AGC signal, wherein the AGC signal occupies one symbol, and the symbol occupied by the AGC signal is positioned before the symbols used for transmitting the S-PSS, the S-SSS and the PSBCH signals; FIG. 7 is a schematic diagram of another embodiment of the S-SSB; as shown, the S-SSB includes AGC signals occupying symbol #0, S-PSS occupying symbol #1, S-SSS occupying symbol #3, and PSBCH signals occupying symbol #2 and # 4.

In the embodiment, a DMRS does not need to be embedded in a symbol occupied by a PSBCH signal in an S-SSB under a CP-OFDM waveform, a receiving end uses an S-SSS to carry out channel estimation after receiving the S-SSB, and demodulates the PSBCH signal by using a channel estimation value of the channel; therefore, the complexity of receiving end demodulation can be reduced, the implementation is simple, and the power resource is saved.

Example 2: referring to fig. 8, a schematic diagram of the distribution of the next slot of the DFT-s-OFDM waveform is shown; as shown, for the first S-SSB, the S-PSS occupies symbol #1, the S-SSS occupies symbol #3, and the PSBCH signal occupies symbols #2 and # 4; for the second S-SSB, the S-PSS occupies symbol #9, the S-SSS occupies symbol #11, and the PSBCH signal occupies symbols #10 and # 12.

Symbols #5 to #7 are data transmission regions, and if the data transmission region and the S-SSB located in front of the data transmission region belong to the same user for reception, the symbol #5 does not need to be used for AGC training, as shown in fig. 8; if the data transmission region and the S-SSB located in front of the data transmission region belong to different terminals for reception, then the symbol #5 needs AGC training, and it is possible to drop the symbol #5 for rate re-matching, and the distribution diagram of the slot is shown in fig. 9.

The S-SSB may further include an AGC signal, where the AGC signal occupies one symbol, and the symbol occupied by the AGC signal is located before the symbol used for transmitting the S-PSS, the S-SSS, and the PSBCH signal, and the symbol positions thereof can be referred to fig. 7, which is not described herein again. In the embodiment, an S-SSB under a DFT-S-OFDM waveform does not comprise an independent DMRS column, a receiving end uses an S-SSS to carry out channel estimation after receiving the S-SSB, and demodulates a PSBCH signal by using a channel estimation value of the channel; therefore, the complexity of receiving end demodulation can be reduced, the implementation is simple, and the power resource is saved.

Example 3: referring to fig. 10, a schematic diagram of the distribution of the next slot of the CP-OFDM waveform is shown; as shown, for the first S-SSB, the S-PSS occupies symbol #4, the S-SSS occupies symbol #2, and the PSBCH signal occupies symbols #1 and # 3; for the second S-SSB, the S-PSS occupies symbol #12, the S-SSS occupies symbol #10, and the PSBCH signal occupies symbols #9 and # 11.

Symbols #5 to #7 are data transmission regions, and if the data transmission region and the S-SSB located in front of the data transmission region belong to the same user for reception, symbol #5 does not need to be used for AGC training, as shown in fig. 10; if the data transmission region and the S-SSB located in front of the data transmission region belong to different terminals for reception, the symbol #5 needs to perform AGC training, and the symbol #5 may be dropped, so as to perform rate re-matching.

The S-SSB may further include an AGC signal, where the AGC signal occupies one symbol, and the symbol occupied by the AGC signal is located before the symbol used for transmitting the S-PSS, the S-SSS, and the PSBCH signal, and the symbol positions thereof can be referred to fig. 7, which is not described herein again. Example 4: referring to fig. 11, a schematic diagram of the distribution of the next slot of the DFT-s-OFDM waveform is shown; as shown, for the first S-SSB, the S-PSS occupies symbol #4, the S-SSS occupies symbol #2, and the PSBCH signal occupies symbols #1 and # 3; for the second S-SSB, the S-PSS occupies symbol #12, the S-SSS occupies symbol #10, and the PSBCH signal occupies symbols #9 and # 11.

Symbols #5 to #7 are data transmission regions, and if the data transmission region and the S-SSB located in front of the data transmission region belong to the same user for reception, the symbol #5 does not need to be used for AGC training, as shown in fig. 11; if the data transmission region and the S-SSB located in front of the data transmission region belong to different terminals for reception, the symbol #5 needs to perform AGC training, and the symbol #5 may be dropped, so as to perform rate re-matching.

The S-SSB may further include an AGC signal, where the AGC signal occupies one symbol, and the symbol occupied by the AGC signal is located before the symbol used for transmitting the S-PSS, the S-SSS, and the PSBCH signal, and the symbol positions thereof can be referred to fig. 7, which is not described herein again.

In the embodiment, an S-SSB under a DFT-S-OFDM waveform does not comprise an independent DMRS column, a receiving end uses an S-SSS to carry out channel estimation after receiving the S-SSB, and demodulates a PSBCH signal by using a channel estimation value of the channel; therefore, the complexity of receiving end demodulation can be reduced, the implementation is simple, and the power resource is saved.

Based on the same technical concept, the embodiment of the present application further provides an apparatus, which can implement the process performed by the first apparatus in fig. 3 in the foregoing embodiment.

As shown in fig. 12, which is a schematic structural diagram of an apparatus provided in an embodiment of the present application, as shown in the drawing, the apparatus includes: generation section 1201 and transmission section 1202.

A generating unit 1201 for an S-SSB; wherein the S-SSB at least comprises S-PSS, S-SSS and PSBCH signals, and the S-SSB does not comprise DMRS.

A sending unit 1202, configured to send the S-SSB.

Based on the same technical concept, the embodiment of the present application further provides an apparatus, which can implement the process performed by the second apparatus in fig. 4 in the foregoing embodiment.

As shown in fig. 13, which is a schematic structural diagram of an apparatus provided in an embodiment of the present application, as shown in the drawing, the apparatus includes: receiving section 1301 and detecting section 1302.

A receiving unit 1301, configured to receive an S-SSB, where the S-SSB at least includes an S-PSS, an S-SSS, and a PSBCH signal, and the S-SSB does not include a DMRS.

A detecting unit 1302, configured to detect the synchronization broadcast information in the S-SSB.

Based on the same technical concept, the embodiment of the present application further provides a communication device, which can implement the flow executed in fig. 12 in the foregoing embodiment.

Fig. 14 shows a schematic structural diagram of a communication apparatus 1400 provided in an embodiment of the present application, that is, shows another schematic structural diagram of a first device. Referring to fig. 14, the communication device 1400 includes a processor 1401, a memory 1402, and optionally a transceiver 1403. The processor 1401 may also be a controller. The processor 1401 is configured to enable the terminal to perform the functions referred to in the preceding flow. A memory 1402 is used coupled to the processor 1401, which stores program instructions and data necessary for the terminal. The processor 1401 is connected to the memory 1402, the memory 1402 is used for storing instructions, and the processor 1401 is used for executing the instructions stored in the memory 1402, so as to complete the steps of the client device executing the corresponding functions in the above method.

In the embodiment of the present application, for concepts, explanations, detailed descriptions, and other steps related to the first device and the communication apparatus 1400 in relation to the technical solutions provided in the embodiment of the present application, please refer to the description of the foregoing methods or the other embodiments, which is not described herein again.

It should be noted that the processor referred to in the embodiments of the present application may be a Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic devices, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like. Wherein the memory may be integrated in the processor or may be provided separately from the processor.

Based on the same technical concept, the embodiment of the present application further provides a communication device, which can implement the flow executed in fig. 13 in the foregoing embodiment.

Fig. 15 shows a schematic structural diagram of a communication apparatus 1500 provided in an embodiment of the present application, that is, shows another schematic structural diagram of a second device. Referring to fig. 15, the communication device 1500 includes a processor 1501, a memory 1502, and optionally, a transceiver 1503. The processor 1501 may also be a controller. The processor 1501 is configured to enable the terminal to perform the functions involved in the aforementioned flows. A memory 1502 is used for coupling with the processor 1501 and holds the necessary program instructions and data for the terminal. The processor 1501 is connected to the memory 1502, the memory 1502 is configured to store instructions, and the processor 1501 is configured to execute the instructions stored in the memory 1502, so as to complete the steps of the method for the client device to execute the corresponding functions.

In the embodiment of the present application, the concepts, explanations, details, and other steps related to the second device and the communication apparatus 1500 in relation to the technical solutions provided in the embodiment of the present application refer to the descriptions of the foregoing methods or other embodiments, and are not described herein again.

Based on the same technical concept, the embodiment of the application also provides a computer readable storage medium. The computer-readable storage medium stores computer-executable instructions for causing a computer to perform the process performed in fig. 3.

Based on the same technical concept, the embodiment of the application also provides a computer readable storage medium. The computer-readable storage medium stores computer-executable instructions for causing a computer to perform the process performed in fig. 4.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method for transmitting synchronized broadcast information, comprising:

the first device generates a through link-synchronization signal and a physical broadcast channel block S-SSB; wherein the S-SSB comprises at least a direct link-primary synchronization signal (S-PSS), a direct link-secondary synchronization signal (S-SSS) and a physical direct link broadcast channel (PSBCH) signal, excluding a demodulation reference signal (DMRS), the S-SSS being used for demodulating the PSBCH signal;

the first device sends the S-SSB over a through link, the through link being an orthogonal frequency division multiplexing (CP-OFDM) waveform with cyclic prefix or an orthogonal frequency division multiplexing (DFT-S-OFDM) waveform with discrete Fourier transform spread spectrum, the S-SSB having the same pattern under the CP-OFDM waveform as under the DFT-S-OFDM waveform.

2. The method of claim 1, wherein the first device sending the S-SSB comprises:

the first device sends two S-SSBs in a time slot, a data transmission area is formed between symbols occupied by the two S-SSBs, and the data transmission area at least comprises two symbols.

3. The method of claim 2, wherein the data transmission region belongs to a different receiving device than an S-SSB located in front of the data transmission region, and a first symbol in the data transmission region is used for automatic gain control, AGC.

4. The method of claim 1, wherein the S-PSS and the S-SSS in the S-SSB occupy 1 symbol, respectively, and the PSBCH signal in the S-SSB occupies 2 symbols.

5. The method of claim 4, wherein symbols occupied by the S-PSS are not adjacent to symbols occupied by the S-SSS, and wherein 2 symbols occupied by the PSBCH signal are not adjacent.

6. The method of claim 5, wherein a first symbol in the S-SSB is occupied by the S-PSS, a second symbol in the S-SSB is occupied by the PSBCH signal, a third symbol in the S-SSB is occupied by the S-SSS, and a fourth symbol in the S-SSB is occupied by the PSBCH signal;

or, a first symbol in the S-SSB is occupied by the PSBCH signal, a second symbol in the S-SSB is occupied by the S-SSS, a third symbol in the S-SSB is occupied by the PSBCH signal, and a fourth symbol in the S-SSB is occupied by the S-PSS.

7. The method of any of claims 1-6, wherein the S-SSB further comprises an AGC signal occupying one symbol, the AGC occupied symbol preceding a symbol used for transmission of the S-PSS, the S-SSS and the PSBCH signal.

8. The method of any of claims 1-6, wherein prior to the first device sending the S-SSB, further comprising:

the first device transmits an AGC signal, the AGC signal occupying one symbol.

9. The method of any one of claims 1 to 6, wherein the first device is a terminal device.

10. A method for detecting synchronized broadcast information, comprising:

a second device receives a direct link-synchronization signal and physical broadcast channel block S-SSB through a direct link, wherein the S-SSB comprises at least a direct link-primary synchronization signal S-PSS, a direct link-secondary synchronization signal S-SSS and a physical direct link broadcast channel PSBCH signal, excluding a demodulation reference signal DMRS, and the S-SSS is used for demodulating the PSBCH signal; the S-SSB is a direct link of an orthogonal frequency division multiplexing (CP-OFDM) waveform adopting cyclic prefix or an orthogonal frequency division multiplexing (DFT-S-OFDM) waveform adopting discrete Fourier transform spread spectrum, and the S-SSB has the same pattern under the CP-OFDM waveform and the DFT-S-OFDM waveform;

the second device detects the S-SSB.

11. The method of claim 10, wherein the second device detecting the synchronized broadcast information in the S-SSB comprises:

the second device demodulates the PSBCH signal in the S-SSB according to the S-SSS in the S-SSB.

12. The method of claim 10, wherein the second device receives an S-SSB, comprising:

the second device receives two S-SSBs in one time slot, and a data transmission area is formed between symbols occupied by the two S-SSBs, and the data transmission area at least comprises two symbols.

13. The method of claim 12, wherein the data transmission region belongs to a different transmitting device than an S-SSB located in front of the data transmission region, and a first symbol in the data transmission region is used for automatic gain control AGC.

14. The method of claim 10, wherein the S-PSS and the S-SSS in the S-SSB occupy 1 symbol, respectively, and the PSBCH signal in the S-SSB occupies 2 symbols.

15. The method of claim 14, wherein symbols occupied by the S-PSS and the S-SSS are not adjacent, and wherein 2 symbols occupied by the PSBCH signal are not adjacent.

16. The method of claim 15, wherein a first symbol in the S-SSB is occupied by the S-PSS, a second symbol in the S-SSB is occupied by the PSBCH signal, a third symbol in the S-SSB is occupied by the S-SSS, and a fourth symbol in the S-SSB is occupied by the PSBCH signal;

17. The method of any of claims 10 to 16, wherein the S-SSB further comprises an AGC signal occupying one symbol, the AGC occupied symbol preceding a symbol used for transmission of the S-PSS, the S-SSS and the PSBCH signal.

18. The method of any of claims 10-16, wherein prior to the second device receiving the S-SSB, further comprising:

the second device receives an AGC signal, the AGC signal occupying one symbol.

19. The method of any of claims 10 to 16, wherein the second device is a terminal device.

20. An apparatus, comprising:

a generating unit for generating a through link-synchronization signal and a physical broadcast channel block S-SSB; wherein the S-SSB comprises at least a direct link-primary synchronization signal (S-PSS), a direct link-secondary synchronization signal (S-SSS) and a physical direct link broadcast channel (PSBCH) signal, excluding a demodulation reference signal (DMRS), the S-SSS being used for demodulating the PSBCH signal;

a sending unit, configured to send the S-SSB through a direct link, where the direct link is a direct link that uses an orthogonal frequency division multiplexing CP-OF DM waveform with a cyclic prefix, or a direct link that uses an orthogonal frequency division multiplexing DFT-S-OFDM waveform with discrete fourier transform spread spectrum, and the S-SSB has the same pattern in the CP-OFDM waveform as in the DFT-S-OFDM waveform.

21. An apparatus, comprising:

a receiving unit, configured to receive a direct link-synchronization signal and physical broadcast channel block S-SSB through a direct link, where the S-SSB includes at least a direct link-primary synchronization signal S-PSS, a direct link-secondary synchronization signal S-SSS, and a physical direct link broadcast channel PSBCH signal, and does not include a demodulation reference signal DMRS, and the S-SSS is used to demodulate the PSBCH signal; the S-SSB is a direct link of an orthogonal frequency division multiplexing (CP-OFDM) waveform adopting cyclic prefix or an orthogonal frequency division multiplexing (DFT-S-OFDM) waveform adopting discrete Fourier transform spread spectrum, and the S-SSB has the same pattern under the CP-OFDM waveform and the DFT-S-OFDM waveform;

and the detection unit is used for detecting the synchronous broadcast information in the S-SSB.

22. A communications apparatus, comprising: a processor, a memory, and a transceiver;

the memory to store computer instructions;

the processor for executing the computer instructions to implement the method of any one of claims 1 to 9.

23. A communications apparatus, comprising: a processor, a memory, and a transceiver;

the memory to store computer instructions;

the processor for executing the computer instructions to implement the method of any one of claims 10 to 19.

24. A computer-readable storage medium, characterized in that the storage medium stores computer instructions which, when executed by a processor, implement the method of any one of claims 1 to 9.

25. A computer-readable storage medium, characterized in that the storage medium stores computer instructions which, when executed by a processor, implement the method of any one of claims 10 to 19.