CN115486148A

CN115486148A - SSB determining method and device and communication equipment

Info

Publication number: CN115486148A
Application number: CN202080100466.2A
Authority: CN
Inventors: 吴作敏
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2022-12-16
Also published as: WO2021226963A1

Abstract

The embodiment of the application provides a method and a device for determining an SSB (secure State bridge) and communication equipment, wherein the method comprises the following steps: the method comprises the steps that first equipment determines a first SSB transmission opportunity corresponding to a first subcarrier interval, wherein the first subcarrier interval is larger than 240kHz, the first SSB transmission opportunity comprises N SSBs, one SSB comprises a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS) and a Physical Broadcast Channel (PBCH), the first SSB transmission opportunity is used for cell initial access of a cell corresponding to the first equipment, and N is a positive integer.

Description

SSB determining method and device and communication equipment

Technical Field

The embodiment of the application relates to the technical field of mobile communication, in particular to a method and a device for determining an SSB (secure service bus), and communication equipment.

Background

The research of New Radio (NR) systems currently mainly considers two Frequency bands, i.e. Frequency band 1 (fr1) and Frequency band 2 (fr2). The FR1 supported Synchronization Signal Block (PBCH Block, SSB or SS/PBCH Block) pattern includes 3 cases, and the FR2 supported SSB pattern includes 2 cases.

In the evolution of New Radio (NR) systems, in order to support high frequency transmission, a subcarrier spacing larger than that supported by the FR2 band needs to be introduced. Accordingly, SSB in high frequency also needs to be redesigned.

Disclosure of Invention

The embodiment of the application provides a method and a device for determining an SSB (secure service bus), and communication equipment.

The method for determining the SSB provided by the embodiment of the application comprises the following steps:

the method comprises the steps that first equipment determines a first SSB transmission opportunity corresponding to a first subcarrier interval, wherein the first subcarrier interval is larger than 240kHz, the first SSB transmission opportunity comprises N SSBs, one SSB comprises a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS) and a Physical Broadcast Channel (PBCH), the first SSB transmission opportunity is used for cell initial access of a cell corresponding to the first equipment, and N is a positive integer.

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

a determining unit, 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, where one SSB includes PSS, SSS, and PBCH, the first SSB transmission opportunity is used for cell initial access of a cell corresponding to the first device, and N is a positive integer.

The communication device provided by the embodiment of the application comprises a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the determination method of the SSB.

The chip provided by the embodiment of the application is used for realizing the SSB determining method.

Specifically, the chip includes: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the determination method of the SSB.

A computer-readable storage medium provided in an embodiment of the present application stores a computer program, where the computer program enables a computer to execute the SSB determination method described above.

The computer program product provided by the embodiment of the present application includes computer program instructions, which enable a computer to execute the above-mentioned SSB determination method.

The computer program provided in the embodiments of the present application, when running on a computer, causes the computer to execute the above-described SSB determination method.

Through the technical scheme, for the first subcarrier interval which is larger than 240kHz, the first SSB transmission opportunity corresponding to the first subcarrier interval is determined, so that high-frequency transmission can be supported.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

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

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

FIG. 3 is a schematic view 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 in 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 the SSB pattern of high frequency provided in the embodiment of the present application;

FIG. 7-1 is a first schematic diagram of SSB patterns corresponding to different subcarrier spacings, according to an embodiment of the present disclosure;

fig. 7-2 is a second schematic diagram of SSB patterns corresponding to different subcarrier spacings, according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural component diagram of an SSB determination apparatus provided in an embodiment of the present application;

fig. 9 is a schematic structural diagram of a communication device provided in 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 according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a global system for mobile communications (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a long term evolution (long term evolution, LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, an advanced long term evolution (advanced long term evolution, LTE-a) system, a new radio (new radio), NR) system, an evolution system of the NR system, an LTE (LTE-based access to unlicensed spectrum, LTE-U) system on an unlicensed frequency band, an NR (NR-based access to unlicensed spectrum, NR-U) system on an unlicensed frequency band, a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a Wireless Local Area Network (WLAN), a wireless fidelity (WiFi), a next-generation communication system, or other communication systems.

Generally, conventional communication systems support a limited number of connections and are easy to implement, however, with the development of communication technology, mobile communication systems will support not only conventional communication, but also, for example, device to device (D2D) communication, machine to machine (M2M) communication, machine Type Communication (MTC), and vehicle to vehicle (V2V) communication, and the embodiments of the present application can also be applied to these communication systems.

The system architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

Illustratively, a 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 referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminals located within the coverage area. Optionally, the Network device 110 may be an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the Network device may be a mobile switching center, a relay station, an Access point, a vehicle-mounted 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, and the like.

By way of example and not limitation, in the embodiments of the present application, the network device may have a mobile characteristic, for example, the network device may be a mobile device. Alternatively, the network device may be a satellite, balloon station. For example, the satellites may be Low Earth Orbit (LEO) satellites, medium Earth Orbit (MEO) satellites, geostationary Earth Orbit (GEO) satellites, high Elliptical Orbit (HEO) satellites, and the like. Alternatively, the network device may be a base station installed on land, water, or the like.

The communication system 100 further comprises at least one terminal device 120 located within the coverage area of the network device 110. As used herein, "terminal" includes, but is not limited to, connection via a wireline, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a Digital cable, a direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., for a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or means of another terminal arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal that is arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A terminal can refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal in a 5G network, or a terminal in a future evolved PLMN, etc.

By way of example and not limitation, in embodiments of the present application, the terminal device may be deployed on land, including indoors or outdoors, hand-held, worn, or worn by a vehicle; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., aircraft, balloons, satellites, etc.).

Optionally, a Device to Device (D2D) communication may be performed between the terminal devices 120.

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

Fig. 1 exemplarily shows one network device and two terminals, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminals within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above and are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

For convenience of understanding of technical solutions of the embodiments of the present application, the following description is provided for related technologies of the embodiments of the present application, and the following related technologies may be arbitrarily combined with the technical solutions of the embodiments of the present application as alternatives, which all belong to the protection scope of the embodiments of the present application. The embodiment of the present application includes at least part of the following contents.

● High frequency

The research of NR system mainly considers two frequency bands, FR1 and FR2, wherein FR1 and FR2 include frequency domain ranges as shown in table 1 below.

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

Table 1: frequency band definition

As NR systems evolve, new frequency bands, i.e., technologies at high frequencies, are also being investigated. The new frequency band includes frequency domain ranges as shown in table 2 below, and is denoted by FRX in the embodiment of the present application for convenience of description, and it should be understood that the frequency band name should not be construed as any limitation. For example, the frequency band range of 52.6GHz-71GHz can be expressed by FR 3.

High Frequency	Corresponding frequency band range
FRX	52.6GHz–71GHz

Table 2: new frequency range

The FRX band includes licensed spectrum and also includes unlicensed spectrum. Or, the FRX band includes an unshared spectrum and also includes a shared spectrum.

Unlicensed spectrum is a nationally and regionally divided spectrum available for communication by radio devices, which is generally considered a shared spectrum, i.e., a spectrum that can be used by communication devices in different communication systems as long as the regulatory requirements set by the country or region on the spectrum are met, without requiring a proprietary spectrum license to be applied to the government.

In order for various communication systems using unlicensed spectrum for wireless communication to coexist friendly on the spectrum, some countries or regions stipulate regulatory requirements that must be met using unlicensed spectrum. For example, the communication device follows the principle of "Listen Before Talk (LBT)", that is, before the communication device performs signal transmission on a channel of an unlicensed spectrum, it needs to perform channel sensing first, and only when the channel sensing result is that the channel is idle, the communication device can perform signal transmission; if the channel sensing result of the communication device on the channel of the unlicensed spectrum is that the channel is busy, the communication device cannot perform signal transmission. For another example, in order to ensure fairness, in one-time transmission, the communication device cannot use the channel of the unlicensed spectrum for signal transmission for a period of time longer than a certain period 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, which affects the transmission of other important signals on the channel, the communication device needs to follow a limit not exceeding the maximum power spectral density when transmitting signals using the channel of the unlicensed spectrum.

The FRX band considers the subcarrier spacing to be larger than that of FR2, and the current candidate subcarrier spacing includes the following: 480kHz, 960kHz, 1.92MHz, 3.84MHz. Correspondingly, the corresponding parameter set (Numerology) at these candidate subcarrier spacings is shown in table 3 below.

Subcarrier spacing	Length of symbol	Normal CP Length	Extending CP Length	Time slot length
480kHz	2.08 microseconds	0.146 microseconds	0.52 microsecond	31.25 microseconds
960kHz	1.04 microseconds	0.073 microseconds	0.26 microsecond	15.625 microseconds
1.92MHz	0.52 microsecond	0.037 microseconds	0.13 microsecond	7.8125 microseconds
3.84MHz	0.26 microsecond	0.018 microsecond	0.065 microseconds	3.90625 microseconds

Table 3: parameter set corresponding to candidate subcarrier interval

● NR SSB pattern

In the NR system, the FR 1-supported SSB patterns include 3 cases (Case A, B, C), and the FR 2-supported SSB patterns include 2 cases (Case D, E). Wherein, 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 transmission within one half frame (5 ms). Assume that the index of the first symbol of the first slot within a half frame is symbol 0:

case A-15kHz subcarrier spacing SSB:

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

for unshared spectrum:

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

if the carrier frequency in FR1 is more 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 the SSB includes {4,8,16,20} +28 xn;

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

if the carrier frequency in FR1 is more than 3GHz, n =0,1.

Case C-30kHz subcarrier spacing SSB:

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

for unshared spectrum and belonging to paired spectrum (e.g. FDD scenario):

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

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

for unshared spectrum and belonging to unpaired spectrum (e.g. TDD scenario):

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

if the carrier frequency in FR1 is more 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 subcarrier spacing SSB:

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

for carrier frequencies within FR 2: n =0,1,2,3,5,6,7,8,10,11,12,13,15,16,17,18;

SSB of Case E-240kHz subcarrier spacing:

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

for carrier frequencies within FR 2: n =0,1,2,3,5,6,7,8.

Fig. 2 and 3 respectively show schematic diagrams of the partial SSB patterns in the different cases described above. Wherein FIG. 2 shows the partial SSB pattern of Case A-15kHz subcarrier spacing, the partial SSB pattern of Case B-30kHz subcarrier spacing, and the partial SSB pattern of Case C-30kHz subcarrier spacing, respectively. FIG. 3 shows the partial SSB pattern for Case D-120kHz subcarrier spacing and the partial SSB pattern for Case E-240kHz subcarrier spacing, respectively.

● NR-U SSB Pattern

In the NR-U system, the initial access procedure of the terminal device may be completed by detecting SSBs in a Discovery signal transmission opportunity (Discovery Burst) window. The discovery signal transmission opportunity window is periodically occurring and may include a plurality of candidate locations for SSB transmission. The network device may perform a plurality of LBT attempts when sending the SSB within the discovery signal transmission opportunity window, and may perform an SSB transmission through at least one candidate location of the plurality of candidate locations after LBT is successful. The base station can select candidate positions for obtaining channel use right from the SSB candidate positions in the discovery signal transmission opportunity window for SSB transmission according to the LBT result in different discovery signal transmission opportunity windows.

In the evolution of NR systems, in order to support high frequency transmission, a subcarrier spacing larger than that supported by the FR2 band needs to be introduced. Accordingly, SSB in high frequency also needs to be redesigned. For this reason, the following technical solutions of the embodiments of the present application are proposed, and the technical solutions of the embodiments of the present application aim to design an SSB pattern at a new subcarrier spacing.

Fig. 4 is a schematic flowchart of a method for determining an SSB provided in an embodiment of the present application, and as shown in fig. 4, the method for determining an SSB includes the following steps:

step 401: the method comprises the steps that first equipment determines a first SSB transmission opportunity corresponding to a first subcarrier interval, wherein the first subcarrier interval is larger than 240kHz, the first SSB transmission opportunity comprises N SSBs, one SSB comprises a PSS, a SSS and a PBCH, the first SSB transmission opportunity is used for cell initial access of a cell corresponding to the first equipment, and N is a positive integer.

In the embodiment of the present application, the first subcarrier spacing is greater than 240kHz. In an alternative, the first subcarrier spacing includes at least one of: 480kHz, 960kHz, 1.92MHz, 3.84MHz. For example: the value of the first subcarrier spacing may be 480kHz, or 960kHz, or 1.92MHz, or 3.84MHz.

In one example, the first device communicates on an FRX frequency band, where the FRX frequency band is higher than FR2, belonging to a high frequency band. Accordingly, the sub-carrier spacing of the FRX band is larger than that of FR 2. Optionally, the subcarrier spacing of the FRX band includes at least one of: 480kHz, 960kHz, 1.92MHz, 3.84MHz. Wherein the first subcarrier interval belongs to a subcarrier interval of an FRX frequency band.

In this embodiment of the present application, a first device determines a first SSB transmission opportunity corresponding to a 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 SSB of the N SSBs is associated with a Beam (Beam), such that Beamforming (Beamforming) transmission at high frequencies may be supported.

Wherein, for one SSB in the first SSB transmission opportunity, the one SSB includes PSS, SSS and PBCH, and the first SSB transmission opportunity is used for cell initial 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 an SSB based on the first SSB transmission opportunity. For example, the terminal device blindly detects the SSB, and completes downlink synchronization, for example, completes frame timing, on the basis of the detected SSB and the SSB pattern corresponding to the first SSB transmission opportunity, to the cell that sends the first SSB transmission opportunity, thereby completing initial access of the cell. Optionally, the cell corresponding to the terminal device may refer to that the cell is a cell to which the terminal device initially accesses.

In another alternative, the first device is a network device that sends SSBs based on the first SSB transmission opportunity. For example, the network device (e.g., a base station) determines candidate positions of SSBs based on the SSB pattern corresponding to the first SSB transmission opportunity, and transmits the SSBs at one or more candidate positions. Further, for 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 LBT is successful. Optionally, the network device corresponding cell may refer to that the cell is a 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 following describes a specific implementation of the first SSB transmission opportunity corresponding to the first subcarrier interval, and it should be noted that the following schemes may be implemented individually or in any combination.

● An SSB index of a first SSB of the N SSBs is indicated by X bits, X being a positive integer, wherein some or all of the X bits are carried by a PBCH in the first SSB; or, some or all of the X bits are carried by a Reference Signal in the first SSB, where the Reference Signal includes at least one of a PSS, an SSS, and a Demodulation Reference Signal (DMRS) in the first SSB, where the DMRS is used to demodulate a PBCH in the first SSB.

In an alternative, N equals 64, X equals 6, i.e. 6 bits are needed to indicate the SSB index. Wherein 3 of the 6 bits are carried by a PBCH in the first SSB, and the other 3 of the 6 bits are carried by a reference signal (e.g., DMRS) in the first SSB.

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

For example: the N is 128 and the X equals 7, i.e. 7 bits are needed to indicate the SSB index. Wherein 3 of the 7 bits are carried by the PBCH in the first SSB, and the other 4 of the 7 bits are carried by the reference signal in the first SSB. Or 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 comprise 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 SSB in the M groups of SSBs in the time domain is less than or equal to the first duration. The first time length is explained below.

Optionally, the first time length is less than or equal to a length of a time domain resource allowed to be transmitted in a first channel access manner (i.e., LBT manner), so that the network device may transmit a set of SSBs after performing channel access successfully (i.e., LBT successfully) using the first channel access manner.

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

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

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

Optionally, the first time length comprises an integer number of symbols; alternatively, the first time length comprises an integer number of time slots.

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

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

● And the interval of two adjacent groups of SSBs in the M groups of SSBs in the time domain is greater than or equal to a second duration. The second period of time is explained below.

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

Here, the transmission/reception conversion time length is a time length required for converting the state of the received signal into the state of the transmitted signal; or, the length of time required to transition from a signaling state to a receiving state; or, a length of time required to transition from the first state of signaling to the second state of signaling; or the length of time required to transition from the first state of the received signal to the second state of the received signal.

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

Here, since the second duration is greater than or equal to the transceive transition time length, the first device (e.g., the terminal device) may be enabled to transmit high priority traffic (e.g., URLLC traffic) through the resource in the second duration, or the network device may be enabled to complete the corresponding LBT for transmitting the next set of SSBs.

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

Here, the specific priority is, for example, a 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), a Physical Uplink Shared Channel (PUSCH), and the like. Examples of the physical Signal include a Sounding Reference Signal (SRS).

Optionally, the second duration comprises an integer number of symbols; alternatively, the second duration may include an integer number of slots.

● For a set of SSBs of the M sets of SSBs, an interval in the time domain of at least two adjacent SSBs included in the set of SSBs is greater than or equal to a third duration. The third period of time is explained below.

Optionally, the third duration includes an integer number of symbols; alternatively, the third duration may include an integer number of slots.

Here, the third duration may be used for transmitting a system message or for transmitting high priority traffic or for switching a direction of a beam transmitting the SSB.

● The one SSB includes a number of symbols greater than or equal to 4.

Optionally, 4 SSBs are included in two slots.

Optionally, 2 SSBs are included in one slot.

Optionally, 1 SSB is included in one slot.

Here, it is considered that the number of symbols included in the SSB can be increased since the symbol becomes shorter due to the increase of the subcarrier spacing at high frequencies, so that the transmission power of the SSB can be made large, increasing the transmission reliability of the SSB.

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

Optionally, the fourth time length comprises an integer number of symbols; alternatively, the fourth time period comprises an integer number of time slots.

In one 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 slot included within the fourth time duration.

In one 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, SSB transmission may start from the first symbol of the first slot on high frequencies since coexistence with other systems need not be considered.

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

In an alternative, the second subcarrier spacing is an integer multiple of the first subcarrier spacing. For example: the first subcarrier spacing is 480kHz and the second subcarrier spacing is 960kHz.

In another alternative, the first subcarrier spacing is an integer multiple of the second subcarrier spacing. For example: the first subcarrier spacing is 960kHz and the second subcarrier spacing is 480kHz. Also for example, the first subcarrier spacing is 480kHz and the second subcarrier spacing is 240kHz.

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

if the second subcarrier spacing is an integer multiple of the first subcarrier spacing, 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;

if the first subcarrier spacing is an integer multiple of the second subcarrier spacing, 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;

the SSB pattern corresponding to the second SSB transmission opportunity is a scaled 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 technical solutions of the embodiments of the present application are illustrated below with reference to specific application examples.

Application example 1

Referring to fig. 5, it is assumed that the first subcarrier spacing is 480khz, n =64, m =4, that is, 64 SSBs are included in one SSB transmission opportunity, and the 64 SSBs are divided into 4 sets of SSBs, each set of SSBs including 16 SSBs. The first duration is 584 microseconds, i.e., the transmission duration of a set of SSBs is less than or equal to 18 time slots. 1125 microseconds is needed to transmit a single SSB transmission opportunity.

One SSB includes 6 symbols, and two slots include 4 SSBs. Taking slot 0 and slot 1 as an example, symbol 0 to symbol 5 in slot 0 correspond to the time domain resources of the first SSB, symbol 6 to symbol 11 in slot 0 correspond to the time domain resources of the second SSB, symbol 12 to symbol 13 in slot 0 and symbol 0 to symbol 3 in slot 1 correspond to the time domain resources of the third SSB, and symbol 4 to symbol 9 in slot 1 correspond to the time domain resources of the fourth SSB.

Application example two

Referring to fig. 6, n =64, m =8, that is, 64 SSBs are included in one SSB transmission opportunity, and the 64 SSBs are divided into 8 sets of SSBs, each set of SSBs including 8 SSBs. The transmission duration of a set of SSBs is less than or equal to 10 slots according to the first duration. 80 slots are needed to transmit one SSB transmission opportunity.

Wherein, one SSB includes 6 symbols, and one slot includes 1 SSB. Taking slot 0 as an example, symbol 0 to symbol 5 in slot 0 correspond to time domain resources of one SSB.

Application example three

Assuming that the first subcarrier spacing is 480kHz and the second subcarrier spacing is 960kHz, the SSB pattern corresponding to the first subcarrier spacing is the same as that of fig. 5.

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

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

Fig. 8 is a schematic structural component diagram of an SSB determination apparatus provided in an embodiment of the present application, and is applied to a first device, and as shown in fig. 8, the SSB determination apparatus includes:

a determining unit 801, 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, where one SSB includes PSS, SSS, and PBCH, the first SSB transmission opportunity is used for cell initial access of a cell corresponding to the first device, and N is a positive integer.

In an optional manner, an SSB index of a first SSB of the N SSBs is indicated by X bits, where X is a positive integer, where some or all of the X bits are carried by a PBCH in the first SSB; or,

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

In an optional mode, 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 part of bits are carried by a PBCH in the first SSB, and the second part of bits are carried by a reference signal in the first SSB.

In an alternative, the first portion of bits comprises 3 bits and the second portion of bits comprises X-3 bits; or,

the first portion of bits comprises X-3 bits and the second portion of bits comprises 3 bits.

In an alternative, the N SSBs include M sets of SSBs, where 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 SSB in the M groups of SSBs in the time domain is less than or equal to the first duration.

In an optional manner, the first time length is less than or equal to a length of a time domain resource allowed to be transmitted in the first channel access manner.

In an alternative, the first time period is less than or equal to 1 millisecond; alternatively, the first time period is less than or equal to 584 microseconds.

In an alternative, the first time period comprises an integer number of symbols; alternatively, the first time length comprises an integer number of time slots.

In an alternative, the SSB patterns of any two SSBs in the M sets of SSBs are the same in the time domain.

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

In an optional manner, the second duration is greater than or equal to the transceive transition time length.

In an alternative, the second duration is used for transmitting a physical channel and/or a physical signal of a specific priority.

In an alternative, the second duration comprises an integer number of symbols; alternatively, the second duration may include an integer number of slots.

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

In an alternative, the third duration comprises an integer number of symbols; alternatively, the third duration may include an integer number of slots.

In an alternative, the one SSB includes a number of symbols greater than or equal to 4.

In an alternative, two slots include 4 of the SSBs; or,

2 of the SSBs are included in one slot; or,

one slot includes 1 of the SSBs.

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

In an alternative, the fourth time length comprises an integer number of symbols; alternatively, the fourth time period comprises an integer number of time slots.

In an alternative, 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 time duration.

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

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

the first subcarrier spacing is an integer multiple of the second subcarrier spacing.

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

In an alternative, the first subcarrier spacing includes at least one of: 480kHz, 960kHz, 1.92MHz, 3.84MHz.

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

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

In an alternative, the first device is a network device,

the device further comprises:

a communication unit 802, configured to send an SSB based on the first SSB transmission opportunity.

It should be understood by those skilled in the art that the description of the determination apparatus of SSB in the embodiments of the present application can be understood by referring to the description of the determination method of SSB in the embodiments of the present application.

Fig. 9 is a schematic structural diagram of a communication device 900 according to an embodiment of the present application. The communication device may be a terminal device or a network device, and the communication device 900 shown in fig. 9 includes a processor 910, and the processor 910 may call and execute 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 also include a memory 920. From the memory 920, the processor 910 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 920 may be a separate device from 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, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

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

Optionally, the communication device 900 may specifically be a network device in this embodiment, and the communication device 900 may implement a corresponding process implemented by the network device in each method in this embodiment, which is not described herein again for brevity.

Optionally, the communication device 900 may specifically be a mobile terminal/terminal device according to this embodiment, and the communication device 900 may implement a corresponding process implemented by the mobile terminal/terminal device in each method according to this embodiment, which is not described herein again for brevity.

Fig. 10 is a schematic structural diagram of a chip of the embodiment of the present application. The chip 1000 shown in fig. 10 includes a processor 1010, and the processor 1010 may 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. 10, the chip 1000 may further include a memory 1020. From the memory 1020, the processor 1010 may call and execute a computer program to implement the method in the embodiment of the present application.

The memory 1020 may be a separate device from the processor 1010 or may be integrated into the processor 1010.

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

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

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

Optionally, the chip may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, and for brevity, no further description is given here.

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

Fig. 11 is a schematic block diagram of a communication system 1100 provided in 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.

The terminal device 1110 may be configured to implement the corresponding function implemented by the terminal device in the foregoing method, and the network device 1120 may be configured to implement the corresponding function implemented by the network device in the foregoing method, which is not described herein again for brevity.

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), enhanced Synchronous SDRAM (ESDRAM), synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), synchronous Link DRAM (SLDRAM), direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

An embodiment of the present application further provides a computer-readable storage medium for storing a computer program.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions enable the computer to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instruction causes the computer to execute a corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of determination of a synchronization signal block SSB, the method comprising:

the method comprises the steps that first equipment determines a first SSB transmission opportunity corresponding to a first subcarrier interval, wherein the first subcarrier interval is larger than 240kHz, the first SSB transmission opportunity comprises N SSBs, one SSB comprises a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS) and a Physical Broadcast Channel (PBCH), the first SSB transmission opportunity is used for cell initial access of a cell corresponding to the first equipment, and N is a positive integer.
The method of claim 1, wherein an SSB index of a first SSB of the N SSBs is indicated by X bits, X being a positive integer, wherein some or all of the X bits are carried by a PBCH in the first SSB; or,

some or all of the X bits are carried by a reference signal in the first SSB, the reference signal including at least one of a PSS, a SSS and a demodulation reference signal (DMRS) in the first SSB, wherein the DMRS is used for demodulating a PBCH in the first SSB.
The method of claim 2, wherein the X is a positive integer greater than 6, the X bits comprising a first partial bit and a second partial bit; the first part of bits are carried by a PBCH in the first SSB, and the second part of bits are carried by a reference signal in the first SSB.
The method of claim 3, wherein the first portion of bits comprises 3 bits and the second portion of bits comprises X-3 bits; or,

the first portion of bits comprises X-3 bits and the second portion of bits comprises 3 bits.
The method of any of claims 1-4, wherein the N SSBs comprise M groups of SSBs, M being a positive integer greater than or equal to 2.
The method of claim 5, wherein each of the M sets of SSBs occupies time domain resources in the time domain that are less than or equal to a first duration.
The method of claim 6, wherein the first time length is less than or equal to a length of a time domain resource allowed to be transmitted in the first channel access mode.
The method of claim 6 or 7, wherein the first time duration is less than or equal to 1 millisecond; alternatively, the first time period is less than or equal to 584 microseconds.
The method of any of claims 6 to 8, wherein the first time length comprises an integer number of symbols; alternatively, the first time length comprises an integer number of time slots.
The method of any of claims 5-9, wherein any two of the M sets of SSBs have the same SSB pattern in the time domain.
The method of any of claims 5-10, wherein adjacent ones of the M sets of SSBs are separated in the time domain by greater than or equal to a second duration.
The method of claim 11, wherein the second duration is greater than or equal to a transceive transition time length.
The method according to claim 11 or 12, wherein the second duration is used for transmitting a physical channel and/or a physical signal of a specific priority.
The method of any of claims 11-13, wherein the second duration comprises an integer number of symbols; alternatively, the second duration may include an integer number of slots.
The method of any of claims 5-14, wherein, for a set of SSBs in the M sets of SSBs, at least two neighboring SSBs included in the set of SSBs are separated in the time domain by greater than or equal to a third duration.
The method of claim 15, wherein the third duration comprises an integer number of symbols; alternatively, the third duration may include an integer number of slots.
The method of any of claims 1-16, wherein the one SSB comprises a number of symbols greater than or equal to 4.
The method of claim 17, wherein,

two slots contain 4 of the SSBs; or,

2 of the SSBs are included in one slot; or,

one slot includes 1 of the SSBs.
The method of any of claims 1-18, wherein the length of time domain resources occupied in the time domain by the first SSB transmission opportunity is less than or equal to a fourth duration.
The method of claim 19, wherein the fourth time length comprises an integer number of symbols; alternatively, the fourth time length comprises an integer number of time slots.
The method of 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 within the fourth time duration.
The method of any one of claims 1 to 21, wherein the method further comprises:

the first device determines a second SSB transmission opportunity corresponding to a second subcarrier spacing, wherein,

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

the first subcarrier spacing is an integer multiple of the second subcarrier spacing.
The method of claim 22, wherein the SSB patterns corresponding to the first and second SSB transmission opportunities comprise at least one of:

if the second subcarrier spacing is an integer multiple of the first subcarrier spacing, 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;

if the first subcarrier spacing is an integer multiple of the second subcarrier spacing, 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;

the SSB pattern corresponding to the second SSB transmission opportunity is a scaled 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 method of any of claims 1-23, wherein the first subcarrier spacing comprises at least one of: 480kHz, 960kHz, 1.92MHz, 3.84MHz.
The method of any of claims 1-24, wherein the first device is a terminal device, the method further comprising:

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

the network device sends an SSB based on the first SSB transmission opportunity.
An apparatus for determining an SSB, applied to a first device, the apparatus comprising:

a determining unit, 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, where one SSB includes PSS, SSS, and PBCH, the first SSB transmission opportunity is used for cell initial access of a cell corresponding to the first device, and N is a positive integer.
The apparatus of claim 27, wherein an SSB index of a first SSB of the N SSBs is indicated by X bits, X being a positive integer, wherein some or all of the X bits are carried by a PBCH in the first SSB; or,

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

the first portion of bits comprises X-3 bits and the second portion of bits comprises 3 bits.
The apparatus of any of claims 27-30, wherein the N SSBs comprise M groups SSBs, M being a positive integer greater than or equal to 2.
The apparatus of claim 31, wherein each of the M sets of SSBs occupies time domain resources in the time domain that are less than or equal to a first duration.
The apparatus of claim 32, wherein the first time duration is less than or equal to a length of time domain resources allowed for transmission in the first channel access manner.
The apparatus of claim 32 or 33, wherein the first time period is less than or equal to 1 millisecond; alternatively, the first time period is less than or equal to 584 microseconds.
The apparatus of any one of claims 32-34, wherein the first time length comprises an integer number of symbols; alternatively, the first time length comprises an integer number of time slots.
The apparatus of any one of claims 31-35, wherein any two of the M sets of SSBs have the same SSB pattern in the time domain.
The apparatus of any of claims 31-36, wherein adjacent ones of the M sets of SSBs are separated in the time domain by greater than or equal to a second duration.
The apparatus of claim 37, wherein the second duration is greater than or equal to a transceive transition time length.
The apparatus of claim 37 or 38, wherein the second duration is used for transmission of a physical channel and/or a physical signal of a particular priority.
The apparatus of any of claims 37-39, wherein the second duration comprises an integer number of symbols; alternatively, the second duration may include an integer number of slots.
The apparatus of any one of claims 31-40, wherein, for a set of SSBs of the M sets of SSBs, at least two neighboring SSBs included in the set of SSBs are separated in the time domain by greater than or equal to a third duration.
The apparatus of claim 41, wherein the third duration comprises an integer number of symbols; alternatively, the third duration may include an integer number of slots.
The apparatus of any of claims 27-42, wherein the one SSB comprises a number of symbols greater than or equal to 4.
The apparatus of claim 43, wherein,

two slots contain 4 of the SSBs; or,

2 of the SSBs are included in one slot; or,

one slot includes 1 of the SSBs.
The apparatus of any of claims 27-43, wherein a length of time domain resources occupied in a time domain by the first SSB transmission opportunity is less than or equal to a fourth duration.
The apparatus of claim 45, wherein the fourth time length comprises an integer number of symbols; alternatively, the fourth time length comprises an integer number of time slots.
The apparatus of 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 within the fourth time duration.
The apparatus of any of claims 27-47, wherein the means for determining is further configured to determine a second SSB transmission opportunity corresponding to a second subcarrier spacing, wherein,

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

the first subcarrier spacing is an integer multiple of the second subcarrier spacing.
The apparatus of claim 48, wherein the SSB patterns corresponding to the first and second SSB transmission opportunities comprise at least one of:

if the second subcarrier spacing is an integer multiple of the first subcarrier spacing, 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;

if the first subcarrier spacing is an integer multiple of the second subcarrier spacing, 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;

the SSB pattern corresponding to the second SSB transmission opportunity is a scaled 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 apparatus of any one of claims 27-49, wherein the first subcarrier spacing comprises at least one of: 480kHz, 960kHz, 1.92MHz, 3.84MHz.
The apparatus of any of claims 27-50, wherein the first device is a terminal device, the apparatus further comprising:

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

the device further comprises:

a communication unit configured to send an SSB based on the first SSB transmission opportunity.
A communication device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and execute the computer program stored in the memory, performing the method of any of claims 1 to 26.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 26.
A computer-readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 26.
A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 1 to 26.
A computer program for causing a computer to perform the method of any one of claims 1 to 26.