WO2021226963A1 - Ssb determination method and apparatus, and communication device - Google Patents

Abstract

Embodiments of the present application provide an SSB determination method and apparatus, and a communication device. The method comprises: a first device determining a first SSB transmission occasion corresponding to a first subcarrier spacing, the first subcarrier spacing being greater than 240 kHz, and the first SSB transmission occasion comprising N SSBs, wherein an SSB comprises a primary synchronization signal (PSS), a secondary synchronization signal (SSS) and a physical broadcast channel (PBCH), the first SSB transmission occasion is used to achieve an initial cell access to a cell corresponding to the first device, and N is a positive integer.

Description

A method and device for determining SSB, and communication equipment Technical field

The embodiments of the present application relate to the field of mobile communication technologies, and in particular to a method and device for determining an SSB, and communication equipment.

Background technique

The research of New Radio (NR) system currently mainly considers two frequency bands, namely Frequency Range 1 (FR1) and Frequency Range 2 (FR2). Among them, the synchronization signal block (Synchronization Signal/PBCH Block, SSB or SS/PBCH block) pattern supported by FR1 includes 3 cases, and the SSB pattern supported by FR2 includes 2 cases.

In the evolution of the New Radio (NR) system, in order to support high-frequency transmission, it is necessary to introduce a larger subcarrier spacing than the subcarrier spacing supported by the FR2 frequency band. Correspondingly, the SSB in the high frequency also needs to be redesigned.

Summary of the invention

The embodiments of the present application provide a method and device for determining an SSB, and communication equipment.

The method for determining the SSB provided in the embodiment of this application includes:

The first device determines the first SSB transmission opportunity corresponding to the first subcarrier interval, the first subcarrier interval is greater than 240kHz, the first SSB transmission opportunity includes N SSBs, and one SSB includes the primary synchronization signal ( Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), and Physical Broadcast Channel (PBCH), the first SSB transmission opportunity is used for the initial cell access of the cell corresponding to the first device , N is a positive integer.

The SSB determining apparatus provided in the embodiment of the present application is applied to a first device, and the apparatus includes:

The determining unit is configured to determine a first SSB transmission opportunity corresponding to a first subcarrier interval, where the first subcarrier interval is greater than 240kHz, and the first SSB transmission opportunity includes N SSBs, where one SSB includes PSS, SSS and PBCH, the first SSB transmission opportunity is used for the initial cell access of the cell corresponding to the first device, and N is a positive integer.

The communication device provided by the embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the above-mentioned method for determining the SSB.

The chip provided in the embodiment of the present application is used to implement the above-mentioned method for determining the SSB.

Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the above-mentioned method for determining the SSB.

The computer-readable storage medium provided by the embodiment of the present application is used to store a computer program, and the computer program enables the computer to execute the above-mentioned method for determining the SSB.

The computer program product provided by the embodiment of the present application includes computer program instructions that cause the computer to execute the above-mentioned method for determining SSB.

The computer program provided in the embodiment of the present application, when it runs on a computer, causes the computer to execute the above-mentioned method for determining the SSB.

Through the above technical solution, for the first sub-carrier interval greater than 240 kHz, the first SSB transmission opportunity corresponding to the first sub-carrier interval is clarified, so that high-frequency transmission can be supported.

Description of the drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The exemplary embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation of the application. In the attached picture:

FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

2 is a schematic diagram of the SSB pattern of FR1 provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of an SSB pattern of FR2 provided by an embodiment of the present application;

FIG. 4 is a schematic flowchart of a method for determining an SSB provided by an embodiment of the present application;

FIG. 5 is a first schematic diagram of a high-frequency SSB pattern provided by an embodiment of the present application;

FIG. 6 is a second schematic diagram of a high-frequency SSB pattern provided by an embodiment of the present application;

Figure 7-1 is a first schematic diagram of SSB patterns corresponding to different subcarrier intervals provided by an embodiment of the present application;

FIG. 7-2 is a second schematic diagram of SSB patterns corresponding to different subcarrier intervals provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of the structural composition of an SSB determining apparatus provided by an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a chip of an embodiment of the present application;

FIG. 11 is a schematic block diagram of a communication system provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The technical solutions of the embodiments of this application can be applied to various communication systems, for example: global system of mobile communication (GSM) system, code division multiple access (CDMA) system, broadband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE Time division duplex (TDD) system, advanced long term evolution (LTE-A) system, new radio (NR) system, evolution system of NR system, LTE on unlicensed frequency bands (LTE-based access to unlicensed spectrum, LTE-U) system, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed frequency bands, universal mobile telecommunication system (UMTS), global Connected microwave access (worldwide interoperability for microwave access, WiMAX) communication systems, wireless local area networks (WLAN), wireless fidelity (WiFi), next-generation communication systems or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, device to device (device to device, D2D) communication, machine to machine (M2M) communication, machine type communication (MTC), and vehicle to vehicle (V2V) communication, etc. The embodiments of this application can also be applied to these communications system.

The system architecture and business scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. Those of ordinary skill in the art will know that with the network With the evolution of architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

Exemplarily, the communication system 100 applied in the embodiment of the present application is shown in FIG. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminals located in the coverage area. Optionally, the network device 110 may be an evolved base station (Evolutional Node B, eNB, or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or The network equipment can be a mobile switching center, a relay station, an access point, an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network side device in a 5G network, or a network device in a future communication system, etc.

As an example and not a limitation, in the embodiments of the present application, the network device may have mobile characteristics, for example, the network device may be a mobile device. Optionally, the network equipment can be a satellite or a balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a Medium Earth Orbit (MEO) satellite, a Geostationary Earth Orbit (GEO) satellite, or a High Elliptical Orbit (HEO) satellite. ) Satellite etc. Optionally, the network device may also be a base station installed in a location such as land or water.

The communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110. The "terminal" used here includes, but is not limited to, connection via a wired line, such as via a public switched telephone network (PSTN), digital subscriber line (Digital Subscriber Line, DSL), digital cable, and direct cable connection; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM-FM Broadcast transmitter; and/or another terminal's device configured to receive/send communication signals; and/or Internet of Things (IoT) equipment. A terminal set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal" or a "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio telephone transceivers Electronic device. Terminal can refer to access terminal, user equipment (UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user Device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in 5G networks, or terminals in the future evolution of PLMN, etc.

As an example and not a limitation, in the embodiments of the present application, the terminal device can be deployed on land, including indoor or outdoor, hand-held, worn or car-mounted; it can also be deployed on the water (such as a ship, etc.); it can also be deployed in the air ( Such as airplanes, balloons and satellites, etc.).

Optionally, the terminal devices 120 may perform direct terminal connection (Device to Device, D2D) communication.

Optionally, the 5G communication system or 5G network may also be referred to as a New Radio (NR) system or NR network.

FIG. 1 exemplarily shows one network device and two terminals. Optionally, the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminals. This embodiment of the present application There is no restriction on this.

Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.

It should be understood that the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 having a communication function and a terminal device 120. The network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here. The communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities and other network entities, which are not limited in the embodiment of the present application.

It should be understood that the terms "system" and "network" in this article are often used interchangeably in this article. The term "and/or" in this article is only an association relationship describing the associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship.

In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and they all belong to the embodiments of the present application. protected range. The embodiments of this application include at least part of the following content.

●High frequency

The research of NR system mainly considers two frequency bands, namely FR1 and FR2, among them, FR1 and FR2 include the frequency domain range as shown in Table 1 below.

Frequency band definition	Corresponding frequency range
FR1	410MHz–7.125GHz
FR2	24.25GHz–52.6GHz

Table 1: Frequency band definition

With the evolution of the NR system, new frequency bands, namely high-frequency technologies, have also begun to be studied. The frequency domain range included in the new frequency band is shown in Table 2 below. For ease of description, FRX is used in the embodiment of the present application. It should be understood that the name of the frequency band should not constitute any limitation. For example, FR3 can be used to represent the frequency range of 52.6GHz-71GHz.

high frequency	Corresponding frequency range
FRX	52.6GHz–71GHz

Table 2: New frequency band range

The FRX frequency band includes licensed spectrum as well as unlicensed spectrum. In other words, the FRX frequency band includes non-shared spectrum as well as shared spectrum.

Unlicensed spectrum is a spectrum that can be used for radio equipment communications divided by countries and regions. This spectrum is usually considered to be a shared spectrum, that is, communication devices in different communication systems as long as they meet the regulatory requirements set by the country or region on the spectrum. To use this spectrum, there is no need to apply for a proprietary spectrum authorization from the government.

In order to allow various communication systems that use unlicensed spectrum for wireless communication to coexist friendly on the spectrum, some countries or regions have stipulated the legal requirements that must be met when using unlicensed spectrum. For example, communication equipment follows the "Listen Before Talk (LBT)" principle, that is, the communication equipment needs to perform channel detection before sending signals on channels of unlicensed spectrum, only when the channel detection result is channel When it is idle, the communication device can send signals; if the channel detection result of the communication device on the channel of the unlicensed spectrum is that the channel is busy, the communication device cannot send signals. For another example, in order to ensure fairness, in one transmission, the duration of signal transmission by a communication device using an unlicensed spectrum channel cannot exceed a certain length of time. For another example, in order to avoid that the power of the signal transmitted on the channel of the unlicensed spectrum is too large, affecting the transmission of other important signals on the channel, the communication device needs to follow the maximum power spectrum when using the channel of the unlicensed spectrum for signal transmission. Density limit.

The subcarrier spacing considered in the FRX frequency band is larger than that of FR2. The current candidate subcarrier spacing includes the following: 480kHz, 960kHz, 1.92MHz, 3.84MHz. Correspondingly, the corresponding parameter sets (Numerology) under these candidate subcarrier intervals are shown in Table 3 below.

Subcarrier spacing	Symbol length	Normal CP length	Extend CP length	Slot length
480kHz	2.08 microseconds	0.146 microseconds	0.52 microseconds	31.25 microseconds
960kHz	1.04 microseconds	0.073 microseconds	0.26 microseconds	15.625 microseconds
1.92MHz	0.52 microseconds	0.037 microseconds	0.13 microseconds	7.8125 microseconds
3.84MHz	0.26 microseconds	0.018 microseconds	0.065 microseconds	3.90625 microseconds

Table 3: Parameter set corresponding to candidate sub-carrier spacing

●NR SSB pattern

In the NR system, the SSB pattern supported by FR1 includes 3 cases (Case A, B, C), and the SSB pattern supported by FR2 includes 2 cases (Case D, E). Among them, one SSB transmission opportunity may include one or more SSBs, one SSB includes 4 symbols in the time domain, and one SSB transmission opportunity should complete the transmission within one half frame (5 milliseconds). Assuming that the index of the first symbol of the first slot in a half frame is symbol 0:

Case A-15kHz sub-carrier spacing SSB:

· The index of the first symbol of SSB includes {2,8}+14*n;

·For non-shared spectrum:

If the carrier frequency is less than or equal to 3GHz, n=0,1;

If the carrier frequency in FR1 is greater than 3GHz, n=0,1,2,3;

· For shared spectrum: n=0,1,2,3,4.

Case B-30kHz subcarrier spacing SSB:

·The index of the first symbol of SSB includes {4,8,16,20}+28*n;

If the carrier frequency is less than or equal to 3GHz, n=0;

If the carrier frequency in FR1 is greater than 3GHz, n=0,1.

Case C-30kHz sub-carrier spacing SSB:

· The index of the first symbol of SSB includes {2,8}+14*n;

·For non-shared spectrum and paired spectrum (for example, FDD scenario):

If the carrier frequency is less than or equal to 3GHz, n=0,1;

If the carrier frequency in FR1 is greater than 3GHz, n=0,1,2,3;

·For non-shared spectrum and non-paired spectrum (such as TDD scenario):

If the carrier frequency is less than or equal to 2.4GHz, n=0,1;

If the carrier frequency in FR1 is greater than 2.4GHz, n=0,1,2,3;

· For shared spectrum: n=0,1,2,3,4,5,6,7,8,9.

Case D-120kHz sub-carrier spacing SSB:

·The index of the first symbol of SSB includes {4,8,16,20}+28*n;

·For the carrier frequency in FR2: n=0,1,2,3,5,6,7,8,10,11,12,13,15,16,17,18;

Case E-240kHz sub-carrier spacing SSB:

· The index of the first symbol of SSB includes {8,12,16,20,32,36,40,44}+56*n;

·For the carrier frequency in FR2: n=0,1,2,3,5,6,7,8.

Figures 2 and 3 respectively show schematic diagrams of part of the SSB patterns in the above-mentioned different situations. Among them, Figure 2 respectively shows a part of the SSB pattern of Case A-15kHz subcarrier spacing, a part of the SSB pattern of Case B-30kHz subcarrier spacing, and a part of the SSB pattern of Case C-30kHz subcarrier spacing. Figure 3 shows part of the SSB pattern of Case D-120kHz subcarrier spacing, and part of the SSB pattern of Case E-240kHz subcarrier spacing.

●NR-U SSB pattern

In the NR-U system, the initial access process of the terminal device can be completed by detecting the SSB in the Discovery Burst window. The discovery signal transmission opportunity window appears periodically, and the discovery signal transmission opportunity window may include multiple candidate locations for SSB transmission. When the network device sends the SSB within the discovery signal transmission opportunity window, it can make multiple LBT attempts, and can perform SSB transmission through at least one of the multiple candidate locations after the LBT is successful. In different discovery signal transmission opportunity windows, the base station may select a candidate location that obtains the channel use right from the SSB candidate locations in the discovery signal transmission opportunity window according to the LBT result for SSB transmission.

In the evolution of the NR system, in order to support high-frequency transmission, it is necessary to introduce a larger sub-carrier spacing than the sub-carrier spacing supported by the FR2 frequency band. Correspondingly, the SSB in the high frequency also needs to be redesigned. For this reason, the following technical solutions of its own embodiments are proposed. The technical solutions of the embodiments of this application are aimed at the design of the SSB pattern under the new subcarrier interval.

FIG. 4 is a schematic flowchart of a method for determining SSB provided by an embodiment of the present application. As shown in FIG. 4, the method for determining SSB includes the following steps:

Step 401: The first device determines the first SSB transmission opportunity corresponding to the first subcarrier interval, the first subcarrier interval is greater than 240kHz, the first SSB transmission opportunity includes N SSBs, and one SSB includes the PSS , SSS and PBCH, the first SSB transmission opportunity is used for the initial cell access of the cell corresponding to the first device, and N is a positive integer.

In the embodiment of the present application, the first subcarrier interval is greater than 240 kHz. In an optional manner, the first subcarrier interval includes at least one of the following: 480kHz, 960kHz, 1.92MHz, 3.84MHz. For example, the value of the first sub-carrier interval may be 480 kHz, or 960 kHz, or 1.92 MHz, or 3.84 MHz.

In an example, the first device communicates on the FRX frequency band, where the FRX frequency band is higher than FR2 and belongs to the high frequency frequency band. Correspondingly, the sub-carrier spacing of the FRX frequency band is larger than that of FR2. Optionally, the subcarrier spacing of the FRX frequency band includes at least one of the following: 480kHz, 960kHz, 1.92MHz, 3.84MHz. Wherein, the first subcarrier interval belongs to a subcarrier interval of the FRX frequency band.

In the embodiment of the present application, the first device determines the first SSB transmission opportunity corresponding to the first subcarrier interval, where the first SSB transmission opportunity includes N SSBs, and N is a positive integer. Optionally, N is a positive integer greater than or equal to 64. Optionally, each of the N SSBs is associated with a beam (Beam), so as to support beamforming (Beamforming) transmission at high frequencies.

For one SSB in the first SSB transmission opportunity, one SSB includes PSS, SSS, and PBCH, and the first SSB transmission opportunity is used for the initial cell access of the cell corresponding to the first device.

In an optional manner, the first device is a terminal device, and the terminal device receives the SSB based on the first SSB transmission opportunity. For example, the terminal device blindly detects the SSB, and completes downlink synchronization, such as frame timing, for the cell that sends the first SSB transmission opportunity based on the detected SSB and the SSB pattern corresponding to the first SSB transmission opportunity, thereby completing the cell Initial access. Optionally, the cell corresponding to the terminal device may refer to that the cell is the cell to which the terminal device performs initial access.

In another optional manner, the first device is a network device, and the network device sends an SSB based on the first SSB transmission opportunity. For example, the network device (such as a base station) determines the candidate location of the SSB based on the SSB pattern corresponding to the first SSB transmission opportunity, and sends the SSB at one or more candidate locations. Further, in the case of unlicensed spectrum, the network device needs to perform LBT before sending the SSB, and send the SSB at one or more candidate locations after the LBT is successful. Optionally, the cell corresponding to the network device may refer to the cell in which the network device transmits at least one SSB according to the first SSB transmission opportunity (or according to a pattern corresponding to the first SSB transmission opportunity).

The specific implementation of the first SSB transmission opportunity corresponding to the first subcarrier interval will be described below. It should be noted that the following solutions can be implemented separately or in any combination.

● The SSB index of the first SSB in the N SSBs is indicated by X bits, and X is a positive integer, wherein some or all of the X bits are carried by the PBCH in the first SSB; or, Some or all of the X bits are carried by reference signals in the first SSB, and the reference signals include PSS, SSS, and demodulation reference signals (Demodulation Reference Signal, DMRS) in the first SSB At least one of, wherein the DMRS is used to demodulate the PBCH in the first SSB.

In an optional manner, the N is equal to 64, and the X is equal to 6, that is, 6 bits are required to indicate the SSB index. Wherein, 3 bits of the 6 bits are carried by the PBCH in the first SSB, and the other 3 bits of the 6 bits are carried by the reference signal (such as DMRS) in the first SSB.

In another optional manner, the N is a positive integer greater than 64, and the X is a positive integer greater than 6. The X bits include a first partial bit and a second partial bit; the first partial bit is carried by the PBCH in the first SSB, and the second partial bit is carried by a reference signal (such as PSS, At least one of SSS and DMRS) carried. Optionally, the first partial bits include 3 bits, and the second partial bits include X-3 bits; or, the first partial bits include X-3 bits, and the second partial bits include 3 bits.

For example, the N is 128, and the X is equal to 7, that is, 7 bits are required to indicate the SSB index. Wherein, 3 bits of the 7 bits are carried by the PBCH in the first SSB, and the other 4 bits of the 7 bits are carried by the reference signal in the first SSB. Alternatively, 4 bits of the 7 bits are carried by the PBCH in the first SSB, and the other 3 bits of the 7 bits are carried by the reference signal in the first SSB.

● The N SSBs include M groups of SSBs, and M is a positive integer greater than or equal to 2.

In an optional manner, the length of the time domain resource occupied by each group of SSBs in the M group of SSBs in the time domain is less than or equal to the first duration. The first duration will be described below.

Optionally, the first time length is less than or equal to the length of the time domain resources allowed for transmission in the first channel access mode (ie LBT mode), so that the network device performs channel access in the first channel access mode. A group of SSB can be transmitted after the entry is successful (that is, the LBT is successful).

Optionally, the first duration is less than or equal to 1 millisecond; or, the first duration is less than or equal to 584 microseconds.

In an example, if the network device uses a channel access method with a fixed detection time slot length of, for example, 25 microseconds, the first time length that the network device can transmit after successful channel access is less than or equal to 1 millisecond.

In another example, if the network device uses a channel access method with a fixed detection time slot length of, for example, 16 microseconds, the first time length that the network device can transmit after successful channel access is less than or equal to 584 microseconds.

Optionally, the first duration includes an integer number of symbols; or, the first duration includes an integer number of time slots.

As an example, the first duration is 1 millisecond, and if the first subcarrier interval is 480 kHz, the transmission duration of a group of SSBs is less than or equal to 32 time slots. As another example, the first duration is 584 microseconds, and if the first subcarrier interval is 480 kHz, then the transmission duration of a group of SSBs is less than or equal to 18 time slots. As another example, the first duration is 250 microseconds, and if the first subcarrier interval is 480 kHz, the transmission duration of a group of SSBs is less than or equal to 8 time slots.

● Any two groups of SSBs in the M group of SSBs have the same SSB pattern in the time domain.

● The time-domain interval between two adjacent sets of SSBs in the M set of SSBs is greater than or equal to the second duration. The second duration will be described below.

Optionally, the second duration is greater than or equal to the duration of the transceiving conversion time.

Here, the length of the transmission and reception conversion time refers to the length of time required to change from the state of receiving signals to the state of transmitting; or, the length of time required to change from the state of transmitting to the state of receiving; or, from the first state of transmitting The length of time required to change the state to the second signaled state; or, the length of time required to change from the first state of receiving signals to the second state of receiving signals.

Here, optionally, the transmission and reception conversion time length is less than or equal to 5 microseconds.

Here, since the second duration is greater than or equal to the length of the transceiving conversion time, the first device (such as a terminal device) can transmit high-priority services (such as URLLC services) through the resources in the second duration, or the network device can Complete the corresponding LBT for transmitting the next set of SSB.

Optionally, the second duration is used to transmit a physical channel and/or a physical signal of a specific priority.

Here, the specific priority is, for example, high priority. It should be noted that high priority refers to a priority greater than or equal to the priority threshold.

Here, the physical channel includes, for example, a Physical Uplink Control Channel (PUCCH), a Physical Random Access Channel (PRACH), and a Physical Uplink Shared Channel (PUSCH). The physical signal includes (Sounding Reference Signal, SRS), for example.

Optionally, the second duration includes an integer number of symbols; or, the second duration includes an integer number of time slots.

● For a group of SSBs in the M group of SSBs, the interval between at least two adjacent SSBs included in the group of SSBs in the time domain is greater than or equal to the third duration. The third duration will be described below.

Optionally, the third duration includes an integer number of symbols; or, the third duration includes an integer number of time slots.

Here, the third duration may be used to transmit system messages or to transmit high-priority services or to switch the direction of the beam for transmitting the SSB.

● The number of symbols included in the one SSB is greater than or equal to 4.

Optionally, four SSBs are included in two time slots.

Optionally, two SSBs are included in one time slot.

Optionally, one SSB is included in one time slot.

Here, considering that the symbols become shorter due to the increase in the subcarrier spacing at high frequencies, the number of symbols included in the SSB can be increased, so that the transmission power of the SSB can be increased, and the transmission reliability of the SSB can be increased.

● The length of the time domain resource occupied by the first SSB transmission opportunity in the time domain is less than or equal to the fourth time length.

Optionally, the fourth duration includes an integer number of symbols; or, the fourth duration includes an integer number of time slots.

In an example, the fourth duration is 5 milliseconds or 2.5 milliseconds.

● The first symbol of the first SSB in the first SSB transmission opportunity is the first symbol of the first time slot included in the fourth duration.

In an example, the index of the first symbol of the first slot in the fourth duration is symbol 0, and then the first symbol of the first SSB in the first SSB transmission opportunity is symbol 0.

Here, since there is no need to consider coexistence with other systems at high frequencies, SSB transmission can start from the first symbol of the first time slot.

In the embodiment of the present application, optionally, the first device determines the second SSB transmission opportunity corresponding to the second subcarrier interval in addition to determining the first SSB transmission opportunity corresponding to the first subcarrier interval. In an optional manner, the second sub-carrier spacing is greater than 240 kHz. In an optional manner, the second subcarrier interval includes at least one of the following: 480kHz, 960kHz, 1.92MHz, 3.84MHz. In an optional manner, the second sub-carrier interval is 120 kHz or 240 kHz.

In an optional manner, the second subcarrier interval is an integer multiple of the first subcarrier interval. For example: the first subcarrier interval is 480kHz, and the second subcarrier interval is 960kHz.

In another optional manner, the first subcarrier interval is an integer multiple of the second subcarrier interval. For example: the first subcarrier spacing is 960kHz, and the second subcarrier spacing is 480kHz. For another example, the first subcarrier interval is 480kHz, and the second subcarrier interval is 240kHz.

In the embodiment of the present application, the SSB pattern corresponding to the first SSB transmission opportunity and the second SSB transmission opportunity includes at least one of the following features:

If the second subcarrier interval is an integer multiple of the first subcarrier interval, the time domain resources occupied by the first SSB transmission opportunity in the time domain include the time domain resources occupied by the second SSB transmission opportunity in the time domain Time domain resources;

If the first subcarrier interval is an integer multiple of the second subcarrier interval, the time domain resources occupied by the second SSB transmission opportunity in the time domain include the time domain resources occupied by the first SSB transmission opportunity in the time domain Time domain resources;

The SSB pattern corresponding to the second SSB transmission opportunity is a scaling pattern of the SSB pattern corresponding to the first SSB transmission opportunity;

The number of SSBs included in the second SSB transmission opportunity is the same as the number of SSBs included in the first SSB transmission opportunity.

The above-mentioned technical solutions of the embodiments of the present application will be illustrated below in conjunction with specific application examples.

Application example one

5, assuming that the first subcarrier interval is 480kHz, N=64, M=4, that is, one SSB transmission opportunity includes 64 SSBs, and the 64 SSBs are divided into 4 groups of SSBs, and each group of SSBs includes 16 SSBs. The first duration is 584 microseconds, that is, the transmission duration of a group of SSB is less than or equal to 18 time slots. It takes 1125 microseconds to transmit an SSB transmission opportunity.

Among them, the number of symbols included in one SSB is 6, and there are 4 SSBs in two time slots. Taking time slot 0 and time slot 1 as examples, symbols 0 to 5 in time slot 0 correspond to the time domain resources of the first SSB, and symbols 6 to 11 in time slot 0 correspond to the time domain resources of the second SSB , Symbols 12 to 13 in slot 0 and symbols 0 to 3 in slot 1 correspond to the time domain resources of the third SSB, and symbols 4 to 9 in slot 1 correspond to the time domain of the fourth SSB resource.

Application example two

Referring to FIG. 6, N=64 and M=8, that is, one SSB transmission opportunity includes 64 SSBs, the 64 SSBs are divided into 8 groups of SSBs, and each group of SSBs includes 8 SSBs. According to the first duration, the transmission duration of a group of SSBs is less than or equal to 10 time slots. It takes 80 time slots to transmit one SSB transmission opportunity.

Among them, the number of symbols included in one SSB is 6, and one SSB is included in one time slot. Taking time slot 0 as an example, symbols 0 to 5 in time slot 0 correspond to one SSB time domain resource.

Application example three

Assuming that the first sub-carrier interval is 480 kHz, the second sub-carrier interval is 960 kHz, and the SSB pattern corresponding to the first sub-carrier interval is the same as FIG. 5.

Referring to Figure 7-1, in the SSB pattern of the second subcarrier interval, one SSB includes 6 symbols, and two time slots include 4 SSBs. The number of SSBs included in the SSB pattern of the second subcarrier interval is the same as the number of SSBs included in the SSB pattern of the first subcarrier interval. The time domain resources occupied by the SSB pattern of the first subcarrier interval include the time domain resources occupied by the SSB pattern of the second subcarrier interval, and the time domain resources occupied by the SSB pattern of the second subcarrier interval are the SSB of the first subcarrier interval Part of the time domain resources occupied by the pattern.

Referring to Figure 7-2, in the SSB pattern of the second subcarrier interval, one SSB includes 6 symbols, and two time slots include 4 SSBs. The number of SSBs included in the SSB pattern of the second subcarrier interval is the same as the number of SSBs included in the SSB pattern of the first subcarrier interval. The SSB pattern of the second subcarrier interval is obtained by reducing the SSB pattern of the first subcarrier interval by 0.5 times in the time domain.

FIG. 8 is a schematic structural composition diagram of an SSB determining apparatus provided by an embodiment of the present application, which is applied to a first device. As shown in FIG. 8, the SSB determining apparatus includes:

The determining unit 801 is configured to determine a first SSB transmission opportunity corresponding to a first subcarrier interval, where the first subcarrier interval is greater than 240kHz, the first SSB transmission opportunity includes N SSBs, and one SSB includes PSS , SSS and PBCH, the first SSB transmission opportunity is used for the initial cell access of the cell corresponding to the first device, and N is a positive integer.

In an optional manner, the SSB index of the first SSB among the N SSBs is indicated by X bits, where X is a positive integer, and some or all of the X bits pass through the first SSB. Carried by the PBCH; or,

Part or all of the X bits are carried by a reference signal in the first SSB, and the reference signal includes at least one of PSS, SSS, and DMRS in the first SSB, wherein the The DMRS is used to demodulate the PBCH in the first SSB.

In an optional manner, the X is a positive integer greater than 6, and the X bits include a first partial bit and a second partial bit; the first partial bit is carried by the PBCH in the first SSB, and the first partial bit is carried by the PBCH in the first SSB. The two partial bits are carried by the reference signal in the first SSB.

In an optional manner, the first partial bit includes 3 bits, and the second partial bit includes X-3 bits; or,

The first part of bits includes X-3 bits, and the second part of bits includes 3 bits.

In an optional manner, the N SSBs include M groups of SSBs, and M is a positive integer greater than or equal to 2.

In an optional manner, the length of the time domain resource occupied by each group of SSBs in the M group of SSBs in the time domain is less than or equal to the first duration.

In an optional manner, the first duration is less than or equal to the length of the time domain resource allowed for transmission in the first channel access manner.

In an optional manner, the first duration is less than or equal to 1 millisecond; or, the first duration is less than or equal to 584 microseconds.

In an optional manner, the first duration includes an integer number of symbols; or, the first duration includes an integer number of time slots.

In an optional manner, any two groups of SSBs in the M group of SSBs have the same SSB pattern in the time domain.

In an optional manner, the interval in the time domain between two adjacent sets of SSBs in the M set of SSBs is greater than or equal to the second duration.

In an optional manner, the second time length is greater than or equal to the transmission and reception conversion time length.

In an optional manner, the second duration is used to transmit a physical channel and/or a physical signal of a specific priority.

In an optional manner, the second duration includes an integer number of symbols; or, the second duration includes an integer number of time slots.

In an optional manner, for a group of SSBs in the M group of SSBs, an interval in the time domain between at least two adjacent SSBs included in the group of SSBs is greater than or equal to a third duration.

In an optional manner, the third duration includes an integer number of symbols; or, the third duration includes an integer number of time slots.

In an optional manner, the number of symbols included in the one SSB is greater than or equal to 4.

In an optional manner, the four SSBs are included in two time slots; or,

One time slot includes two of the SSBs; or,

One time slot includes one SSB.

In an optional manner, the length of the time domain resource occupied by the first SSB transmission opportunity in the time domain is less than or equal to the fourth duration.

In an optional manner, the fourth duration includes an integer number of symbols; or, the fourth duration includes an integer number of time slots.

In an optional manner, the first symbol of the first SSB in the first SSB transmission opportunity is the first symbol of the first time slot included in the fourth duration.

In an optional manner, the determining unit 801 is further configured to determine the second SSB transmission opportunity corresponding to the second subcarrier interval, where:

The second subcarrier interval is an integer multiple of the first subcarrier interval; or,

The first subcarrier interval is an integer multiple of the second subcarrier interval.

In an optional manner, the SSB pattern corresponding to the first SSB transmission opportunity and the second SSB transmission opportunity includes at least one of the following features:

If the second subcarrier interval is an integer multiple of the first subcarrier interval, the time domain resources occupied by the first SSB transmission opportunity in the time domain include the time domain resources occupied by the second SSB transmission opportunity in the time domain Time domain resources;

If the first subcarrier interval is an integer multiple of the second subcarrier interval, the time domain resources occupied by the second SSB transmission opportunity in the time domain include the time domain resources occupied by the first SSB transmission opportunity in the time domain Time domain resources;

The SSB pattern corresponding to the second SSB transmission opportunity is a scaling pattern of the SSB pattern corresponding to the first SSB transmission opportunity;

The number of SSBs included in the second SSB transmission opportunity is the same as the number of SSBs included in the first SSB transmission opportunity.

In an optional manner, the first subcarrier interval includes at least one of the following: 480kHz, 960kHz, 1.92MHz, 3.84MHz.

In an optional manner, the first device is a terminal device, and the apparatus further includes:

The communication unit 802 is configured to receive an SSB based on the first SSB transmission opportunity.

In an optional manner, the first device is a network device,

The device also includes:

The communication unit 802 is configured to send an SSB based on the first SSB transmission opportunity.

Those skilled in the art should understand that the relevant description of the foregoing SSB determining apparatus in the embodiment of the present application can be understood with reference to the relevant description of the SSB determining method in the embodiment of the present application.

FIG. 9 is a schematic structural diagram of a communication device 900 provided by an embodiment of the present application. The communication device may be a terminal device or a network device. The communication device 900 shown in FIG. 9 includes a processor 910, and the processor 910 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 9, the communication device 900 may further include a memory 920. The processor 910 may call and run a computer program from the memory 920 to implement the method in the embodiment of the present application.

The memory 920 may be a separate device independent of the processor 910, or may be integrated in the processor 910.

Optionally, as shown in FIG. 9, the communication device 900 may further include a transceiver 930, and the processor 910 may control the transceiver 930 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.

Wherein, the transceiver 930 may include a transmitter and a receiver. The transceiver 930 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 900 may specifically be a network device of an embodiment of the application, and the communication device 900 may implement the corresponding process implemented by the network device in each method of the embodiment of the application. For the sake of brevity, details are not repeated here. .

Optionally, the communication device 900 may specifically be a mobile terminal/terminal device of an embodiment of the present application, and the communication device 900 may implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application. For the sake of brevity , I won’t repeat it here.

FIG. 10 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 1000 shown in FIG. 10 includes a processor 1010, and the processor 1010 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 10, the chip 1000 may further include a memory 1020. The processor 1010 can call and run a computer program from the memory 1020 to implement the method in the embodiment of the present application.

The memory 1020 may be a separate device independent of the processor 1010, or may be integrated in the processor 1010.

Optionally, the chip 1000 may further include an input interface 1030. The processor 1010 can control the input interface 1030 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.

Optionally, the chip 1000 may further include an output interface 1040. The processor 1010 can control the output interface 1040 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, details are not described herein again.

Optionally, the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application. For the sake of brevity, here No longer.

It should be understood that the chip mentioned in the embodiment of the present application may also be referred to as a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip, etc.

FIG. 11 is a schematic block diagram of a communication system 1100 according to an embodiment of the present application. As shown in FIG. 11, the communication system 1100 includes a terminal device 1110 and a network device 1120.

Wherein, the terminal device 1110 can be used to implement the corresponding function implemented by the terminal device in the above method, and the network device 1120 can be used to implement the corresponding function implemented by the network device in the above method. For brevity, it will not be repeated here. .

It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method embodiments may be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Rate SDRAM, DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), Synchronous Link Dynamic Random Access Memory (Synchlink DRAM, SLDRAM) ) And Direct Rambus RAM (DR RAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.

It should be understood that the foregoing memory is exemplary but not restrictive. For example, the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is to say, the memory in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable types of memory.

The embodiments of the present application also provide a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, here No longer.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application , For the sake of brevity, I won’t repeat it here.

The embodiments of the present application also provide a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, it is not here. Go into details again.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For the sake of brevity, I will not repeat them here.

The embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the network device in the embodiment of the present application. When the computer program runs on the computer, it causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity , I won’t repeat it here.

Optionally, the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application. When the computer program runs on the computer, the computer executes each method in the embodiment of the present application. For the sake of brevity, the corresponding process will not be repeated here.

A person of ordinary skill in the art may realize that the units and algorithm steps of the examples described in combination 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 by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

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

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method can be implemented in other ways. For example, the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It 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 they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in the various embodiments of the present application 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 function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims (57)

1. A method for determining a synchronization signal block SSB, the method includes:

   The first device determines the first SSB transmission opportunity corresponding to the first subcarrier interval, the first subcarrier interval is greater than 240kHz, the first SSB transmission opportunity includes N SSBs, and one SSB includes the primary synchronization signal PSS , The secondary synchronization signal SSS and the physical broadcast channel PBCH, the first SSB transmission opportunity is used for the initial cell access of the cell corresponding to the first device, and N is a positive integer.
2. The method according to claim 1, wherein the SSB index of the first SSB among the N SSBs is indicated by X bits, and X is a positive integer, wherein some or all of the X bits pass through the The PBCH in the first SSB is carried; or,

   Some or all of the X bits are carried by a reference signal in the first SSB, and the reference signal includes at least one of PSS, SSS, and a demodulation reference signal DMRS in the first SSB, Wherein, the DMRS is used to demodulate the PBCH in the first SSB.
3. The method according to claim 2, wherein the X is a positive integer greater than 6, and the X bits include a first partial bit and a second partial bit; the first partial bit is carried by the PBCH in the first SSB , The second part of bits is carried by the reference signal in the first SSB.
4. The method according to claim 3, wherein the first part of bits includes 3 bits, and the second part of bits includes X-3 bits; or,

   The first part of bits includes X-3 bits, and the second part of bits includes 3 bits.
5. The method according to any one of claims 1 to 4, wherein the N SSBs include M groups of SSBs, and M is a positive integer greater than or equal to 2.
6. The method according to claim 5, wherein the length of the time domain resource occupied by each group of SSBs in the M group of SSBs in the time domain is less than or equal to the first duration.
7. The method according to claim 6, wherein the first duration is less than or equal to the length of the time domain resource allowed for transmission in the first channel access mode.
8. The method according to claim 6 or 7, wherein the first duration is less than or equal to 1 millisecond; or, the first duration is less than or equal to 584 microseconds.
9. The method according to any one of claims 6 to 8, wherein the first duration includes an integer number of symbols; or, the first duration includes an integer number of time slots.
10. The method according to any one of claims 5 to 9, wherein any two groups of SSBs in the M group of SSBs have the same SSB pattern in the time domain.
11. The method according to any one of claims 5 to 10, wherein the interval in the time domain between two adjacent sets of SSBs in the M group of SSBs is greater than or equal to a second duration.
12. 11. The method according to claim 11, wherein the second duration is greater than or equal to the duration of the transceiving conversion time.
13. The method according to claim 11 or 12, wherein the second duration is used to transmit a physical channel and/or a physical signal of a specific priority.
14. The method according to any one of claims 11 to 13, wherein the second duration includes an integer number of symbols; or, the second duration includes an integer number of time slots.
15. The method according to any one of claims 5 to 14, wherein for a group of SSBs in the M group of SSBs, the interval between at least two adjacent SSBs included in the group of SSBs in the time domain is greater than Or equal to the third duration.
16. The method according to claim 15, wherein the third duration includes an integer number of symbols; or, the third duration includes an integer number of time slots.
17. The method according to any one of claims 1 to 16, wherein the number of symbols included in the one SSB is greater than or equal to 4.
18. The method of claim 17, wherein:

    Four of the SSBs are included in two time slots; or,

    One time slot includes two of the SSBs; or,

    One time slot includes one SSB.
19. The method according to any one of claims 1 to 18, wherein the length of the time domain resource occupied by the first SSB transmission opportunity in the time domain is less than or equal to the fourth duration.
20. The method according to claim 19, wherein the fourth duration includes an integer number of symbols; or, the fourth duration includes an integer number of time slots.
21. The method according to claim 19 or 20, wherein the first symbol of the first SSB in the first SSB transmission opportunity is the first symbol of the first slot included in the fourth duration .
22. The method according to any one of claims 1 to 21, wherein the method further comprises:

    The first device determines the second SSB transmission opportunity corresponding to the second subcarrier interval, where:

    The second subcarrier interval is an integer multiple of the first subcarrier interval; or,

    The first subcarrier interval is an integer multiple of the second subcarrier interval.
23. The method according to claim 22, wherein the SSB pattern corresponding to the first SSB transmission opportunity and the second SSB transmission opportunity includes at least one of the following characteristics:

    If the second subcarrier interval is an integer multiple of the first subcarrier interval, the time domain resources occupied by the first SSB transmission opportunity in the time domain include the time domain resources occupied by the second SSB transmission opportunity in the time domain Time domain resources;

    If the first subcarrier interval is an integer multiple of the second subcarrier interval, the time domain resources occupied by the second SSB transmission opportunity in the time domain include the time domain resources occupied by the first SSB transmission opportunity in the time domain Time domain resources;

    The SSB pattern corresponding to the second SSB transmission opportunity is a scaling pattern of the SSB pattern corresponding to the first SSB transmission opportunity;

    The number of SSBs included in the second SSB transmission opportunity is the same as the number of SSBs included in the first SSB transmission opportunity.
24. The method according to any one of claims 1 to 23, wherein the first subcarrier interval comprises at least one of the following: 480kHz, 960kHz, 1.92MHz, 3.84MHz.
25. The method according to any one of claims 1 to 24, wherein the first device is a terminal device, and the method further comprises:

    The terminal device receives the SSB based on the first SSB transmission opportunity.
26. The method according to any one of claims 1 to 24, wherein the first device is a network device, and the method further comprises:

    The network device sends the SSB based on the first SSB transmission opportunity.
27. A device for determining SSB is applied to a first device, and the device includes:

    The determining unit is configured to determine a first SSB transmission opportunity corresponding to a first subcarrier interval, where the first subcarrier interval is greater than 240kHz, and the first SSB transmission opportunity includes N SSBs, where one SSB includes PSS, SSS and PBCH, the first SSB transmission opportunity is used for the initial cell access of the cell corresponding to the first device, and N is a positive integer.
28. The apparatus according to claim 27, wherein the SSB index of the first SSB among the N SSBs is indicated by X bits, and X is a positive integer, wherein some or all of the X bits pass through the The PBCH in the first SSB is carried; or,

    Part or all of the X bits are carried by a reference signal in the first SSB, and the reference signal includes at least one of PSS, SSS, and DMRS in the first SSB, wherein the The DMRS is used to demodulate the PBCH in the first SSB.
29. The apparatus according to claim 28, wherein the X is a positive integer greater than 6, and the X bits include a first partial bit and a second partial bit; the first partial bit is carried by the PBCH in the first SSB , The second part of bits is carried by the reference signal in the first SSB.
30. The apparatus according to claim 29, wherein the first partial bit includes 3 bits, and the second partial bit includes X-3 bits; or,

    The first part of bits includes X-3 bits, and the second part of bits includes 3 bits.
31. The device according to any one of claims 27 to 30, wherein the N SSBs include M groups of SSBs, and M is a positive integer greater than or equal to 2.
32. The apparatus according to claim 31, wherein the length of the time domain resource occupied by each group of SSBs in the M group of SSBs in the time domain is less than or equal to the first duration.
33. The apparatus according to claim 32, wherein the first duration is less than or equal to the length of the time domain resource allowed for transmission in the first channel access mode.
34. The device according to claim 32 or 33, wherein the first duration is less than or equal to 1 millisecond; or, the first duration is less than or equal to 584 microseconds.
35. The apparatus according to any one of claims 32 to 34, wherein the first duration includes an integer number of symbols; or, the first duration includes an integer number of time slots.
36. The apparatus according to any one of claims 31 to 35, wherein any two groups of SSBs in the M group of SSBs have the same SSB pattern in the time domain.
37. The apparatus according to any one of claims 31 to 36, wherein the interval between two adjacent two sets of SSBs in the M set of SSBs in the time domain is greater than or equal to a second duration.
38. The apparatus according to claim 37, wherein the second duration is greater than or equal to the duration of the transceiving conversion time.
39. The apparatus according to claim 37 or 38, wherein the second duration is used to transmit a physical channel and/or a physical signal of a specific priority.
40. The apparatus according to any one of claims 37 to 39, wherein the second duration includes an integer number of symbols; or, the second duration includes an integer number of time slots.
41. The apparatus according to any one of claims 31 to 40, wherein for a group of SSBs in the M group of SSBs, the interval between at least two adjacent SSBs included in the group of SSBs in the time domain is greater than Or equal to the third duration.
42. The apparatus of claim 41, wherein the third duration includes an integer number of symbols; or, the third duration includes an integer number of time slots.
43. The apparatus according to any one of claims 27 to 42, wherein the number of symbols included in the one SSB is greater than or equal to 4.
44. The device of claim 43, wherein:

    Four of the SSBs are included in two time slots; or,

    One time slot includes two of the SSBs; or,

    One time slot includes one SSB.
45. The apparatus according to any one of claims 27 to 43, wherein the length of the time domain resource occupied by the first SSB transmission opportunity in the time domain is less than or equal to the fourth duration.
46. The apparatus of claim 45, wherein the fourth duration includes an integer number of symbols; or, the fourth duration includes an integer number of time slots.
47. The apparatus according to claim 45 or 46, wherein the first symbol of the first SSB in the first SSB transmission opportunity is the first symbol of the first slot included in the fourth duration .
48. The apparatus according to any one of claims 27 to 47, wherein the determining unit is further configured to determine a second SSB transmission opportunity corresponding to a second subcarrier interval, wherein:

    The second subcarrier interval is an integer multiple of the first subcarrier interval; or,

    The first subcarrier interval is an integer multiple of the second subcarrier interval.
49. The apparatus of claim 48, wherein the SSB pattern corresponding to the first SSB transmission opportunity and the second SSB transmission opportunity includes at least one of the following characteristics:

    If the second subcarrier interval is an integer multiple of the first subcarrier interval, the time domain resources occupied by the first SSB transmission opportunity in the time domain include the time domain resources occupied by the second SSB transmission opportunity in the time domain Time domain resources;

    If the first subcarrier interval is an integer multiple of the second subcarrier interval, the time domain resources occupied by the second SSB transmission opportunity in the time domain include the time domain resources occupied by the first SSB transmission opportunity in the time domain Time domain resources;

    The SSB pattern corresponding to the second SSB transmission opportunity is a scaling pattern of the SSB pattern corresponding to the first SSB transmission opportunity;

    The number of SSBs included in the second SSB transmission opportunity is the same as the number of SSBs included in the first SSB transmission opportunity.
50. The apparatus according to any one of claims 27 to 49, wherein the first subcarrier interval comprises at least one of the following: 480kHz, 960kHz, 1.92MHz, 3.84MHz.
51. The apparatus according to any one of claims 27 to 50, wherein the first device is a terminal device, and the apparatus further comprises:

    The communication unit is configured to receive the SSB based on the first SSB transmission opportunity.
52. The apparatus according to any one of claims 27 to 50, wherein the first device is a network device,

    The device also includes:

    The communication unit is configured to send the SSB based on the first SSB transmission opportunity.
53. A communication device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any one of claims 1 to 26 Methods.
54. A chip comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 26.
55. A computer-readable storage medium for storing a computer program that enables a computer to execute the method according to any one of claims 1 to 26.
56. A computer program product comprising computer program instructions that cause a computer to execute the method according to any one of claims 1 to 26.
57. A computer program that causes a computer to execute the method according to any one of claims 1 to 26.

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