A method and apparatus for determining SSB, and a communication device

Abstract

An embodiment of this application provides a method and apparatus for determining an SSB, and a communication device. The method includes: A first device determines a first SSB transmission opportunity corresponding to a first subcarrier spacing, the first subcarrier spacing being greater than 240 kHz. The first SSB transmission opportunity includes N SSBs, where one SSB includes 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 the cell corresponding to the first device, and N is a positive integer.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of mobile communication technologies, and particularly to a method and apparatus for determining an SSB, and a communication device. Background Art

[0002] The research on the New Radio (NR) system currently mainly considers two frequency bands, namely Frequency range 1 (FR1) and Frequency range 2 (FR2). Among them, the patterns of the Synchronization Signal / PBCH Block (SSB or SS / PBCH block) supported by FR1 include 3 cases, and the SSB patterns supported by FR2 include 2 cases.

[0003] In the evolution of the New Radio (NR) system, in order to support high-frequency transmission, a subcarrier spacing larger than that supported by the FR2 frequency band needs to be introduced. Correspondingly, the SSB in high frequency also needs to be redesigned. Summary of the Invention

[0004] The embodiments of the present application provide a method and apparatus for determining an SSB, and a communication device.

[0005] The method for determining an SSB provided by the embodiments of the present application includes:

[0006] A first device determines a first SSB transmission opportunity corresponding to a first subcarrier spacing, the first subcarrier spacing being greater than 240 kHz, the first SSB transmission opportunity including N SSBs, where one SSB includes a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH), and the first SSB transmission opportunity is used for cell initial access of the cell corresponding to the first device, and N is a positive integer.

[0007] The apparatus for determining an SSB provided by the embodiments of the present application is applied to a first device, and the apparatus includes:

[0008] A determination unit, configured to determine a first SSB transmission opportunity corresponding to a first subcarrier spacing, the first subcarrier spacing being greater than 240 kHz, the first SSB transmission opportunity including N SSBs, where one SSB includes a PSS, an SSS, and a PBCH, and the first SSB transmission opportunity is used for cell initial access of the cell corresponding to the first device, and N is a positive integer.

[0009] 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.

[0010] The chip provided by the embodiment of the present application is used to implement the above-mentioned method for determining the SSB.

[0011] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device installed with the chip executes the above-mentioned method for determining the SSB.

[0012] 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 a computer to execute the above-mentioned method for determining the SSB.

[0013] The computer program product provided by the embodiment of the present application includes computer program instructions, and the computer program instructions enable a computer to execute the above-mentioned method for determining the SSB.

[0014] The computer program provided by the embodiment of the present application, when running on a computer, enables the computer to execute the above-mentioned method for determining the SSB.

[0015] Through the above technical solution, for a first subcarrier spacing greater than 240 kHz, the first SSB transmission opportunity corresponding to the first subcarrier spacing is clarified, so as to support high-frequency transmission. Description of the Drawings

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0017] Figure 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

[0018] Figure 2 is a schematic diagram of the SSB pattern of FR1 provided by an embodiment of the present application;

[0019] Figure 3 is a schematic diagram of the SSB pattern of FR2 provided by an embodiment of the present application;

[0020] Figure 4 is a schematic flowchart of the method for determining the SSB provided by an embodiment of the present application;

[0021] Figure 5 is a schematic diagram of the SSB pattern of high frequency provided by an embodiment of the present application Figure 1;

[0022] Figure 6 This is a schematic diagram of the high-frequency SSB pattern provided by the embodiments of the present application Figure 2 ;

[0023] Figure 7-1 Figure 1 This is a schematic diagram of the SSB patterns corresponding to different subcarrier intervals provided by the embodiments of the present application Figure 1 ;

[0024] Figure 7-2 This is a schematic diagram of the SSB patterns corresponding to different subcarrier intervals provided by the embodiments of the present application Figure 2 ;

[0025] Figure 8 This is a schematic diagram of the structural composition of the SSB determination device provided by the embodiments of the present application;

[0026] Figure 9 This is a schematic structural diagram of a communication device provided by the embodiments of the present application;

[0027] Figure 10 This is a schematic structural diagram of the chip provided by the embodiments of the present application;

[0028] Figure 11 This is a schematic block diagram of a communication system provided by the embodiments of the present application. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present application will be described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0030] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, 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, the evolved system of the NR system, LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), next-generation communication system or other communication systems, etc.

[0031] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technologies, mobile communication systems will not only support traditional communications, but also support, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine type communication (MTC), and vehicle-to-vehicle (V2V) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0032] The system architecture and business scenarios described in the embodiments of this application are used to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Those of ordinary skill in the art will know that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0033] Exemplarily, the communication system 100 to which the embodiments of this application are applied is as Figure 1 shown. 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, terminal). The network device 110 may provide communication coverage for a specific geographical area and may communicate with terminals located within 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 radio 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, etc.

[0034] By way of example and not limitation, in the embodiments of this application, the network device may have mobility characteristics. For example, the network device may be a mobile device. Optionally, the network device may be a satellite, 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, a High Elliptical Orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set at locations such as land, water areas, etc.

[0035] The communication system 100 further includes at least one terminal device 120 within the coverage range of the network device 110. As used herein, "terminal" includes, but is not limited to, being connected via a wired line, such as via a Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connection; and / or another data connection / network; and / or via a wireless interface, such as, for a cellular network, Wireless Local Area Network (WLAN), digital television network such as a DVB-H network, satellite network, AM-FM broadcast transmitter; and / or a device of another terminal configured to receive / transmit communication signals; and / or an Internet of Things (IoT) device. A terminal configured to communicate via 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 phones; Personal Communications System (PCS) terminals that can combine cellular radiotelephone with data processing, fax, and data communication capabilities; PDAs that may include a radiotelephone, pager, Internet / intranet access, web browser, notepad, calendar, and / or Global Positioning System (GPS) receiver; and conventional laptop and / or palmtop receivers or other electronic devices including radiotelephone transceivers. A terminal may refer to an access terminal, User Equipment (UE), user unit, user station, mobile station, mobile unit, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. An access terminal may be a cellular phone, cordless phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), handheld device with wireless communication capabilities, computing device, or other processing device connected to a wireless modem, in-vehicle device, wearable device, a terminal in a 5G network, or a terminal in a future evolved PLMN, etc.

[0036] By way of example and not limitation, in the embodiments of the present application, the terminal device may be deployed on land, including indoor or outdoor, handheld, wearable or in-vehicle; it may also be deployed on water (such as on a ship, etc.); it may also be deployed in the air (such as on an airplane, balloon, satellite, etc.).

[0037] Optionally, direct device - to - device (D2D) communication can be performed between the terminal devices 120.

[0038] Optionally, the 5G communication system or 5G network can also be referred to as a New Radio (NR) system or NR network.

[0039] Figure 1 Exemplarily, one network device and two terminals are shown. Optionally, the communication system 100 may include multiple network devices, and the coverage range of each network device may include other numbers of terminals. This application embodiment does not make any limitations in this regard.

[0040] Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity. This application embodiment does not make any limitations in this regard.

[0041] It should be understood that in the embodiments of this application, a device with communication functions in a network / system can be referred to as a communication device. Taking Figure 1 the shown communication system 100 as an example, the communication devices may include the network device 110 and the terminal device 120 with communication functions. The network device 110 and the terminal device 120 can be the specific devices described above, which will not be elaborated here; the communication devices may also include other devices in the communication system 100, such as other network entities like a network controller and a mobility management entity. This application embodiment does not make any limitations in this regard.

[0042] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is merely a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0043] To facilitate the understanding of the technical solutions of the embodiments of this application, the related technologies of the embodiments of this application are described below. The following related technologies can be arbitrarily combined with the technical solutions of the embodiments of this application as optional solutions, and they all fall within the protection scope of the embodiments of this application. The embodiments of this application include at least some of the following contents.

[0044] ● High frequency

[0045] The research of the NR system mainly considers two frequency bands, namely FR1 and FR2. The frequency domain ranges included in FR1 and FR2 are shown in Table 1 below.

[0046] Frequency Band Definition Corresponding Frequency Band Range FR1 410 MHz – 7.125 GHz FR2 24.25 GHz – 52.6 GHz

[0047] Table 1: Band Definition

[0048] With the evolution of the NR system, technologies in new frequency bands, namely high frequencies, have also started to be studied. The frequency domain ranges included in the new frequency bands are shown in Table 2 below. For ease of description, in the embodiments of this application, it is represented by FRX. It should be understood that the name of this frequency band should not constitute any limitation. For example, the frequency band range of 52.6 GHz - 71 GHz can be represented by FR3.

[0049] High Frequency Corresponding Frequency Band Range FRX 52.6 GHz – 71 GHz

[0050] Table 2: New Frequency Band Range

[0051] The FRX frequency band includes licensed spectrum and also includes unlicensed spectrum. Or rather, the FRX frequency band includes non - shared spectrum and also includes shared spectrum.

[0052] Unlicensed spectrum is the spectrum divided by countries and regions that can be used for radio device communication. This spectrum is usually considered shared spectrum, that is, as long as the communication devices in different communication systems meet the regulatory requirements set by the country or region on this spectrum, they can use this spectrum without applying to the government for exclusive spectrum authorization.

[0053] In order to enable various communication systems using unlicensed spectrum for wireless communication to coexist amicably on this spectrum, some countries or regions have stipulated the regulatory requirements that must be met for using unlicensed spectrum. For example, communication devices follow the "Listen Before Talk (LBT)" principle, that is, before a communication device sends a signal on a channel of unlicensed spectrum, it needs to first perform channel sensing. Only when the channel sensing result shows that the channel is idle can this communication device send a signal; if the channel sensing result of a communication device on a channel of unlicensed spectrum shows that the channel is busy, this communication device cannot send a signal. Another example is that in order to ensure fairness, in one transmission, the duration for which a communication device uses a channel of unlicensed spectrum for signal transmission cannot exceed a certain time length. Another example is that in order to avoid the power of the signal transmitted on a channel of unlicensed spectrum being too large and affecting the transmission of other important signals on this channel, a communication device needs to follow the limit of not exceeding the maximum power spectral density when using a channel of unlicensed spectrum for signal transmission.

[0054] The sub - carrier spacing considered in the FRX frequency band is larger than that of FR2. The current candidate sub - carrier spacings include the following: 480 kHz, 960 kHz, 1.92 MHz, 3.84 MHz. Correspondingly, the parameter sets (Numerology) corresponding to these candidate sub - carrier spacings are shown in Table 3 below.

[0055] Subcarrier Spacing Symbol Length Normal CP Length Extended CP Length Time Slot Length 480 kHz 2.08 microseconds 0.146 microseconds 0.52 microseconds 31.25 microseconds 960 kHz 1.04 microseconds 0.073 microseconds 0.26 microseconds 15.625 microseconds 1.92 MHz 0.52 microseconds 0.037 microseconds 0.13 microseconds 7.8125 microseconds 3.84 MHz 0.26 microseconds 0.018 microseconds 0.065 microseconds 3.90625 microseconds

[0056] Table 3: Parameter sets corresponding to candidate subcarrier spacings

[0057] ● NR SSB pattern

[0058] In the NR system, the SSB patterns supported by FR1 include 3 cases (Case A, B, C), and the SSB patterns supported by FR2 include 2 cases (Case D, E). Among them, one SSB transmission opportunity can include one or more SSBs. One SSB includes 4 symbols in the time domain, and one SSB transmission opportunity should be completed within one half-frame (5 milliseconds). Assume that the index of the first symbol in the first time slot within one half-frame is symbol 0:

[0059] Case A - SSB with a 15 kHz subcarrier spacing:

[0060] · The index of the first symbol of the SSB includes {2, 8} + 14 * n;

[0061] · For non-shared spectrum:

[0062] If the carrier frequency is less than or equal to 3 GHz, n = 0, 1;

[0063] If the carrier frequency within FR1 is greater than 3 GHz, n = 0, 1, 2, 3;

[0064] · For shared spectrum: n = 0, 1, 2, 3, 4.

[0065] Case B - SSB with a 30 kHz subcarrier spacing:

[0066] · The index of the first symbol of the SSB includes {4, 8, 16, 20} + 28 * n;

[0067] If the carrier frequency is less than or equal to 3 GHz, n = 0;

[0068] If the carrier frequency within FR1 is greater than 3 GHz, n = 0, 1.

[0069] Case C - SSB with a 30 kHz subcarrier spacing:

[0070] · The index of the first symbol of the SSB includes {2, 8} + 14 * n;

[0071] · For non-shared spectrum and paired spectrum (such as FDD scenario):

[0072] If the carrier frequency is less than or equal to 3 GHz, n = 0, 1;

[0073] If the carrier frequency within FR1 is greater than 3 GHz, n = 0, 1, 2, 3;

[0074] · For non-shared spectrum and non-paired spectrum (e.g., TDD scenario):

[0075] If the carrier frequency is less than or equal to 2.4 GHz, n = 0, 1;

[0076] If the carrier frequency within FR1 is greater than 2.4 GHz, n = 0, 1, 2, 3;

[0077] · For shared spectrum: n = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

[0078] Case D - SSB with 120 kHz subcarrier spacing:

[0079] · The index of the first symbol of the SSB includes {4, 8, 16, 20} + 28 * n;

[0080] · For the carrier frequency within FR2: n = 0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18;

[0081] Case E - SSB with 240 kHz subcarrier spacing:

[0082] · The index of the first symbol of the SSB includes {8, 12, 16, 20, 32, 36, 40, 44} + 56 * n;

[0083] · For the carrier frequency within FR2: n = 0, 1, 2, 3, 5, 6, 7, 8.

[0084] Figure 2 and Figure 3 respectively give the schematic diagrams of partial SSB patterns in the above different cases. Among them, Figure 2 respectively give the partial SSB patterns of Case A - with 15 kHz subcarrier spacing, Case B - with 30 kHz subcarrier spacing, and Case C - with 30 kHz subcarrier spacing. Figure 3 respectively give the partial SSB patterns of Case D - with 120 kHz subcarrier spacing and Case E - with 240 kHz subcarrier spacing.

[0085] ● NR-U SSB pattern

[0086] 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 Burst window appears periodically, and the Discovery Burst window can include multiple candidate positions for SSB transmission. When the network device sends the SSB within the Discovery Burst window, it can perform multiple LBT attempts, and after successful LBT, it can transmit the SSB through at least one of the multiple candidate positions. The base station can select a candidate position that obtains the channel usage right from the SSB candidate positions within the Discovery Burst window according to the LBT result for SSB transmission in different Discovery Burst windows.

[0087] In the evolution of the NR system, in order to support high-frequency transmission, it is necessary to introduce a subcarrier spacing larger than that supported by the FR2 frequency band. Correspondingly, the SSB in high frequency also needs to be redesigned. For this reason, the following technical solutions of the present embodiment are proposed. The technical solutions of the embodiments of the present application are aimed at the design of the SSB pattern under the new subcarrier spacing.

[0088] Figure 4 It is a schematic flowchart of the method for determining the SSB provided by the embodiments of the present application, as Figure 4 shown, the method for determining the SSB includes the following steps:

[0089] Step 401: The first device determines a first SSB transmission opportunity corresponding to a first subcarrier spacing, the first subcarrier spacing is greater than 240 kHz, and the first SSB transmission opportunity includes N SSBs, where one SSB includes PSS, SSS, and PBCH, and the first SSB transmission opportunity is used for the cell initial access of the cell corresponding to the first device, and N is a positive integer.

[0090] In the embodiments of the present application, the first subcarrier spacing is greater than 240 kHz. In an optional manner, the first subcarrier spacing includes at least one of the following: 480 kHz, 960 kHz, 1.92 MHz, 3.84 MHz. For example: the value of the first subcarrier spacing can be 480 kHz, or 960 kHz, or 1.92 MHz, or 3.84 MHz.

[0091] In one 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 band. Correspondingly, the subcarrier 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: 480 kHz, 960 kHz, 1.92 MHz, 3.84 MHz. Among them, the first subcarrier spacing belongs to a subcarrier spacing of the FRX frequency band.

[0092] In an embodiment of the present application, a first device determines a first SSB transmission opportunity corresponding to a first subcarrier spacing, 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, so as to support beamforming transmission at high frequencies.

[0093] Among them, for an SSB in the first SSB transmission opportunity, an SSB includes a PSS, an SSS, and a PBCH, and the first SSB transmission opportunity is used for the cell initial access of the cell corresponding to the first device.

[0094] In an alternative 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 based on the detected SSB and the SSB pattern corresponding to the first SSB transmission opportunity, completes downlink synchronization for the cell that sends the first SSB transmission opportunity, such as completing frame timing, so as to complete the initial access to the cell. Optionally, the cell corresponding to the terminal device may refer to the cell to which the terminal device performs initial access.

[0095] In another alternative 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 candidate positions of the SSB based on the SSB pattern corresponding to the first SSB transmission opportunity, and sends the SSB at one or more candidate positions. Further, for the case of unlicensed spectrum, before sending the SSB, the network device needs to perform LBT, and after successful LBT, sends the SSB at one or more candidate positions. Optionally, the cell corresponding to the network device may refer to the cell in which the network device sends at least one SSB according to the first SSB transmission opportunity (or according to the pattern corresponding to the first SSB transmission opportunity).

[0096] The following describes the specific implementation of the first SSB transmission opportunity corresponding to the first subcarrier spacing. It should be noted that the following solutions can be implemented separately or combined in any way.

[0097] ● The SSB index of the first SSB among the N SSBs is indicated by X bits, where X is a positive integer. Among them, some or all of the X bits are carried by the PBCH in the first SSB; alternatively, some or all of the X bits are carried by the reference signal in the first SSB, and the reference signal includes at least one of the PSS, SSS, and Demodulation Reference Signal (DMRS) in the first SSB, where the DMRS is used to demodulate the PBCH in the first SSB.

[0098] In an alternative manner, N is equal to 64 and X is equal to 6, that is, 6 bits are required to indicate the SSB index. Among them, 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.

[0099] In another alternative manner, N is a positive integer greater than 64, and X is a positive integer greater than 6. The X bits include a first part of bits and a second part of bits; the first part of bits is carried by the PBCH in the first SSB, and the second part of bits is carried by the reference signal (such as at least one of PSS, SSS, and DMRS) in the first SSB. Optionally, 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.

[0100] For example: N is 128 and X is equal to 7, that is, 7 bits are required to indicate the SSB index. Among them, 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. 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.

[0101] ● The N SSBs include M groups of SSBs, where M is a positive integer greater than or equal to 2.

[0102] In an alternative manner, the length of the time-domain resource occupied by each group of SSBs in the M groups of SSBs in the time domain is less than or equal to a first duration. The following describes the first duration.

[0103] Optionally, the first duration is less than or equal to the length of the time-domain resource allowed to be transmitted in a first channel access mode (i.e., the LBT mode), so that the network device can transmit a group of SSBs after successfully performing channel access (i.e., LBT success) using the first channel access mode.

[0104] Optionally, the first duration is less than or equal to 1 millisecond; or, the first duration is less than or equal to 584 microseconds.

[0105] In one example, if the network device uses a channel access mode with a fixed detection time slot length, such as 25 microseconds, then the first duration that the network device can transmit after successful channel access is less than or equal to 1 millisecond.

[0106] In another example, if the network device uses a channel access mode with a fixed detection time slot length, such as 16 microseconds, then the first duration that the network device can transmit after successful channel access is less than or equal to 584 microseconds.

[0107] Optionally, the first duration includes an integer number of symbols; or, the first duration includes an integer number of time slots.

[0108] As an example, the first duration is 1 millisecond. If the first subcarrier spacing is 480 kHz, then 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. If the first subcarrier spacing is 480 kHz, then the transmission duration of a group of SSBs is less than or equal to 18 time slots. As yet another example, the first duration is 250 microseconds. If the first subcarrier spacing is 480 kHz, then the transmission duration of a group of SSBs is less than or equal to 8 time slots.

[0109] ● The SSB patterns of any two groups of SSBs among the M groups of SSBs are the same in the time domain.

[0110] ● The interval between two adjacent groups of SSBs among the M groups of SSBs in the time domain is greater than or equal to a second duration. The second duration is described below.

[0111] Optionally, the second duration is greater than or equal to the transceiver conversion time length.

[0112] Here, the transceiver conversion time length refers to the time length required to convert from the state of receiving a signal to the state of transmitting a signal; or, the time length required to convert from the state of transmitting a signal to the state of receiving a signal; or, the time length required to convert from the first state of transmitting a signal to the second state of transmitting a signal; or, the time length required to convert from the first state of receiving a signal to the second state of receiving a signal.

[0113] Here, optionally, the transceiver conversion time length is less than or equal to 5 microseconds.

[0114] Here, since the second duration is greater than or equal to the transceiver switching time length, 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 SSBs.

[0115] Optionally, the second duration is used to transmit physical channels and / or physical signals with a specific priority.

[0116] 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.

[0117] Here, physical channels include, for example, Physical Uplink Control Channel (PUCCH), Physical Random Access Channel (PRACH), Physical Uplink Shared Channel (PUSCH), etc. Physical signals include, for example, (Sounding Reference Signal, SRS), etc.

[0118] Optionally, the second duration includes an integer number of symbols; or, the second duration includes an integer number of time slots.

[0119] ● For a group of SSBs in the M groups of SSBs, the time domain interval between at least two adjacent SSBs included in the group of SSBs is greater than or equal to a third duration. The third duration is described below.

[0120] Optionally, the third duration includes an integer number of symbols; or, the third duration includes an integer number of time slots.

[0121] Here, the third duration can be used to transmit system messages or to transmit high-priority services or to switch the direction of the beam for transmitting the SSB.

[0122] ● The number of symbols included in one SSB is greater than or equal to 4.

[0123] Optionally, four of the SSBs are included in two time slots.

[0124] Optionally, two of the SSBs are included in one time slot.

[0125] Optionally, one of the SSBs is included in one time slot.

[0126] Here, considering that at high frequencies, due to the increase in subcarrier spacing and the shortening of symbols, 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 improved.

[0127] ● 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.

[0128] Optionally, the fourth duration includes an integer number of symbols; or, the fourth duration includes an integer number of time slots.

[0129] In one example, the fourth duration is 5 milliseconds or 2.5 milliseconds.

[0130] ● 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.

[0131] In one example, if the index of the first symbol of the first time slot within the fourth duration is symbol 0, then the first symbol of the first SSB in the first SSB transmission opportunity is symbol 0.

[0132] Here, at high frequencies, since there is no need to consider coexistence with other systems, the SSB transmission can start from the first symbol of the first time slot.

[0133] In an embodiment of the present application, optionally, in addition to determining the first SSB transmission opportunity corresponding to the first subcarrier spacing, the first device also determines a second SSB transmission opportunity corresponding to a second subcarrier spacing. In an optional manner, the second subcarrier spacing is greater than 240 kHz. In an optional manner, the second subcarrier spacing includes at least one of the following: 480 kHz, 960 kHz, 1.92 MHz, 3.84 MHz. In an optional manner, the second subcarrier spacing is 120 kHz or 240 kHz.

[0134] In an optional manner, the second subcarrier spacing is an integer multiple of the first subcarrier spacing. For example: the first subcarrier spacing is 480 kHz and the second subcarrier spacing is 960 kHz.

[0135] In another optional manner, the first subcarrier spacing is an integer multiple of the second subcarrier spacing. For example: the first subcarrier spacing is 960 kHz and the second subcarrier spacing is 480 kHz. Another example is that the first subcarrier spacing is 480 kHz and the second subcarrier spacing is 240 kHz.

[0136] 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:

[0137] 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;

[0138] 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;

[0139] 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;

[0140] 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.

[0141] The above technical solutions of the embodiments of the present application will be illustrated below with specific application examples.

[0142] Application Example 1

[0143] Refer to Figure 5 , assuming that the first subcarrier spacing is 480 kHz, N = 64, M = 4, that is, one SSB transmission opportunity includes 64 SSBs, and the 64 SSBs are divided into 4 groups of SSBs, with each group of SSBs including 16 SSBs. The first duration is 584 microseconds, that is, the transmission duration of one group of SSBs is less than or equal to 18 time slots. It takes 1125 microseconds to complete one SSB transmission opportunity.

[0144] Among them, the number of symbols included in one SSB is 6, and 4 SSBs are included in two time slots. Taking time slot 0 and time slot 1 as an example, symbols 0 to 5 in time slot 0 correspond to the time-domain resources of the first SSB, symbols 6 to 11 in time slot 0 correspond to the time-domain resources of the second SSB, symbols 12 to 13 in time slot 0 and symbols 0 to 3 in time slot 1 correspond to the time-domain resources of the third SSB, and symbols 4 to 9 in time slot 1 correspond to the time-domain resources of the fourth SSB.

[0145] Application Example 2

[0146] Refer to Figure 6 , N = 64, M = 8, that is, one SSB transmission opportunity includes 64 SSBs, and the 64 SSBs are divided into 8 groups of SSBs, with each group of SSBs including 8 SSBs. According to the first duration, the transmission duration of one group of SSBs is less than or equal to 10 time slots. It takes 80 time slots to complete one SSB transmission opportunity.

[0147] Among them, the number of symbols included in one SSB is 6, and one time slot includes 1 SSB. Taking time slot 0 as an example, symbols 0 to 5 in time slot 0 correspond to the time domain resources of one SSB.

[0148] Application Example 3

[0149] Assume that the first subcarrier spacing is 480 kHz and the second subcarrier spacing is 960 kHz. The SSB pattern corresponding to the first subcarrier spacing is the same as Figure 5 the same.

[0150] Refer to Figure 7-1 , in the SSB pattern with the second subcarrier spacing, the number of symbols included in one SSB is 6, and 4 SSBs are included in two time slots. The number of SSBs included in the SSB pattern with the second subcarrier spacing is the same as the number of SSBs included in the SSB pattern with the first subcarrier spacing. The time domain resources occupied by the SSB pattern with the first subcarrier spacing include the time domain resources occupied by the SSB pattern with the second subcarrier spacing, and the time domain resources occupied by the SSB pattern with the second subcarrier spacing are a part of the time domain resources occupied by the SSB pattern with the first subcarrier spacing.

[0151] Refer to Figure 7-2 , in the SSB pattern with the second subcarrier spacing, the number of symbols included in one SSB is 6, and 4 SSBs are included in two time slots. The number of SSBs included in the SSB pattern with the second subcarrier spacing is the same as the number of SSBs included in the SSB pattern with the first subcarrier spacing. The SSB pattern with the second subcarrier spacing is obtained by reducing the SSB pattern with the first subcarrier spacing by 0.5 times in the time domain.

[0152] Figure 8 is a schematic structural composition diagram of the SSB determination device provided by the embodiment of the present application, applied to the first device. As Figure 8 shown, the SSB determination device includes:

[0153] A determination unit 801, configured to determine a first SSB transmission opportunity corresponding to the first subcarrier spacing. The first subcarrier spacing is greater than 240 kHz. The first SSB transmission opportunity includes N SSBs. Among them, one SSB includes a PSS, an SSS, and a PBCH. The first SSB transmission opportunity is used for the cell initial access of the cell corresponding to the first device, and N is a positive integer.

[0154] 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. Among them, some or all of the X bits are carried by the PBCH in the first SSB; or,

[0155] 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 PSS, SSS, and DMRS in the first SSB, where the DMRS is used to demodulate the PBCH in the first SSB.

[0156] In an optional manner, X is a positive integer greater than 6, and the X bits include a first part of bits and a second part of bits; the first part of bits is carried by the PBCH in the first SSB, and the second part of bits is carried by the reference signal in the first SSB.

[0157] In an optional manner, the first part of bits includes 3 bits, and the second part of bits includes X - 3 bits; or,

[0158] the first part of bits includes X - 3 bits, and the second part of bits includes 3 bits.

[0159] In an optional manner, the N SSBs include M groups of SSBs, where M is a positive integer greater than or equal to 2.

[0160] In an optional manner, the length of the time-domain resource occupied by each group of SSBs in the M groups of SSBs in the time domain is less than or equal to a first duration.

[0161] In an optional manner, the first duration is less than or equal to the length of the time-domain resource allowed to be transmitted in a first channel access mode.

[0162] 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.

[0163] In an optional manner, the first duration includes an integer number of symbols; or, the first duration includes an integer number of time slots.

[0164] In an optional manner, the SSB patterns of any two groups of SSBs in the M groups of SSBs are the same in the time domain.

[0165] In an optional manner, the interval between two adjacent groups of SSBs in the M groups of SSBs in the time domain is greater than or equal to a second duration.

[0166] In an optional manner, the second duration is greater than or equal to the transceiver switching time length.

[0167] In an optional manner, the second duration is used to transmit physical channels and / or physical signals with a specific priority.

[0168] In an optional manner, the second duration includes an integer number of symbols; or, the second duration includes an integer number of time slots.

[0169] In an optional manner, for a group of SSBs among the M groups of SSBs, the time domain interval between at least two adjacent SSBs included in the group of SSBs is greater than or equal to a third duration.

[0170] In an optional manner, the third duration includes an integer number of symbols; or, the third duration includes an integer number of time slots.

[0171] In an optional manner, the number of symbols included in one SSB is greater than or equal to 4.

[0172] In an optional manner, 4 of the SSBs are included in two time slots; or,

[0173] 2 of the SSBs are included in one time slot; or,

[0174] 1 of the SSBs is included in one time slot.

[0175] 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 a fourth duration.

[0176] In an optional manner, the fourth duration includes an integer number of symbols; or, the fourth duration includes an integer number of time slots.

[0177] 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.

[0178] In an optional manner, the determining unit 801 is further configured to determine a second SSB transmission opportunity corresponding to a second subcarrier spacing, where

[0179] the second subcarrier spacing is an integer multiple of the first subcarrier spacing; or,

[0180] the first subcarrier spacing is an integer multiple of the second subcarrier spacing.

[0181] In an optional manner, the SSB patterns corresponding to the first SSB transmission opportunity and the second SSB transmission opportunity include at least one of the following features:

[0182] If the second subcarrier spacing is an integer multiple of the first subcarrier spacing, the time domain resource occupied by the first SSB transmission opportunity in the time domain includes the time domain resource occupied by the second SSB transmission opportunity in the time domain;

[0183] If the first subcarrier spacing is an integer multiple of the second subcarrier spacing, the time domain resource occupied by the second SSB transmission opportunity in the time domain includes the time domain resource occupied by the first SSB transmission opportunity in the time domain;

[0184] 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;

[0185] 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.

[0186] In an optional manner, the first subcarrier spacing includes at least one of the following: 480 kHz, 960 kHz, 1.92 MHz, 3.84 MHz.

[0187] In an optional manner, the first device is a terminal device, and the apparatus further includes:

[0188] A communication unit 802, configured to receive an SSB based on the first SSB transmission opportunity.

[0189] In an optional manner, the first device is a network device,

[0190] The apparatus further includes:

[0191] A communication unit 802, configured to send an SSB based on the first SSB transmission opportunity.

[0192] Those skilled in the art should understand that the relevant descriptions of the above SSB determination apparatus in the embodiments of the present application can be understood with reference to the relevant descriptions of the SSB determination method in the embodiments of the present application.

[0193] Figure 9 It 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. Figure 9 As shown, the communication device 900 includes a processor 910. The processor 910 can call and run a computer program from a memory to implement the method in the embodiments of the present application.

[0194] Optionally, as Figure 9 shown, the communication device 900 may further include a memory 920. Among them, the processor 910 can call and run a computer program from the memory 920 to implement the method in the embodiments of the present application.

[0195] Among them, the memory 920 may be a separate device independent of the processor 910, or may be integrated in the processor 910.

[0196] Optionally, as Figure 9As shown, the communication device 900 may further include a transceiver 930. 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 information or data sent by other devices.

[0197] Among them, 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.

[0198] Optionally, the communication device 900 may specifically be the network device of the embodiments of the present application, and the communication device 900 may implement the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, details are not described herein again.

[0199] Optionally, the communication device 900 may specifically be the mobile terminal / terminal device of the embodiments of the present application, and the communication device 900 may implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, details are not described herein again.

[0200] Figure 10 It is a schematic structural diagram of the chip of the embodiments of the present application. Figure 10 The chip 1000 shown includes a processor 1010. The processor 1010 may call and run a computer program from a memory to implement the methods in the embodiments of the present application.

[0201] Optionally, as Figure 10 shown, the chip 1000 may further include a memory 1020. Among them, the processor 1010 may call and run a computer program from the memory 1020 to implement the methods in the embodiments of the present application.

[0202] Among them, the memory 1020 may be a separate device independent of the processor 1010, or may be integrated in the processor 1010.

[0203] Optionally, the chip 1000 may further include an input interface 1030. Among them, the processor 1010 may control the input interface 1030 to communicate with other devices or chips. Specifically, it may obtain information or data sent by other devices or chips.

[0204] Optionally, the chip 1000 may further include an output interface 1040. Among them, the processor 1010 may control the output interface 1040 to communicate with other devices or chips. Specifically, it may output information or data to other devices or chips.

[0205] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, details are not described herein again.

[0206] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiments of the present application. For the sake of brevity, details are not described herein again.

[0207] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip, etc.

[0208] Figure 11 is a schematic block diagram of a communication system 1100 provided by the embodiments of the present application. As Figure 11 shown, the communication system 1100 includes a terminal device 1110 and a network device 1120.

[0209] Among them, the terminal device 1110 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1120 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, details are not described herein again.

[0210] It should be understood that the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the above method embodiments can be completed by the integrated logic circuit in the hardware of the processor or by instructions in software form. The above processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as being executed by the hardware decoding processor, or by a combination of the hardware and software modules in the decoding processor. The software module may be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and combines its hardware to complete the steps of the above method.

[0211] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchlink dynamic random access memory (SLDRAM), and direct rambus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include but not be limited to these and any other suitable types of memory.

[0212] It should be understood that the above memory is by way of example but not limitation. For example, the memory in the embodiments of the present application can also be a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synch link dynamic random access memory (SLDRAM), and a direct rambus random access memory (Direct Rambus RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not be limited to these and any other suitable types of memory.

[0213] The embodiments of the present application also provide a computer-readable storage medium for storing a computer program.

[0214] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, details are not described herein again.

[0215] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiments of the present application. For the sake of brevity, details are not described herein again.

[0216] The embodiments of the present application also provide a computer program product including computer program instructions.

[0217] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, details are not described herein again.

[0218] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiments of the present application. For the sake of brevity, details are not described herein again.

[0219] The embodiments of the present application also provide a computer program.

[0220] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on the computer, it causes the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, details are not described herein again.

[0221] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, it causes the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiments of the present application. For the sake of brevity, details are not described herein again.

[0222] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or in a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. A person skilled in the art can use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of this application.

[0223] Those skilled in the art can clearly understand that for the sake of convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0224] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods 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 can be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, and the indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.

[0225] 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 can be located in one place, or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0226] In addition, the functional units in the various embodiments of this application can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0227] When the above-mentioned functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art or a part of this technical solution can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs that can store program codes.

[0228] As described above, the above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed in this application can easily think of changes or substitutions, and all should be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A method for determining a Synchronization Signal Block (SSB), the method comprising: A first device determines a first SSB transmission opportunity corresponding to a first subcarrier spacing, the first subcarrier spacing being greater than 240 kHz, the first SSB transmission opportunity including N SSBs, where one SSB includes a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH), and the first SSB transmission opportunity is used for cell initial access of the cell corresponding to the first device, and N is a positive integer; Wherein, the N SSBs include M groups of SSBs, M is a positive integer greater than or equal to 2, the length of the time-domain resources occupied by each group of SSBs in the M groups of SSBs in the time domain is less than or equal to a first duration, the SSB patterns of any two groups of SSBs in the M groups of SSBs are the same in the time domain, and the interval between two adjacent groups of SSBs in the M groups of SSBs in the time domain is greater than or equal to a second duration.

2. The method according to claim 1, wherein The SSB index of the first SSB among the N SSBs is indicated by X bits, 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 a reference signal in the first SSB, the reference signal including at least one of the PSS, SSS, and 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 part of bits and a second part of bits; the first part of bits is carried by the PBCH in the first SSB, and 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 first duration is less than or equal to the length of the time-domain resources allowed to be transmitted in a first channel access mode.

6. The method according to any one of claims 1 to 4, wherein The first duration is less than or equal to 1 millisecond; or, the first duration is less than or equal to 584 microseconds.

7. The method according to any one of claims 1 to 4, wherein The first duration includes an integer number of symbols; or, the first duration includes an integer number of time slots.

8. The method according to any one of claims 1 to 4, wherein The second duration is greater than or equal to the length of the transceiver conversion time.

9. The method according to any one of claims 1 to 4, wherein The second duration is used to transmit physical channels and / or physical signals with a specific priority.

10. The method according to any one of claims 1 to 4, wherein The second duration includes an integer number of symbols; or, the second duration includes an integer number of time slots.

11. The method according to any one of claims 1 to 4, wherein For a group of SSBs in the M groups 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 a third duration.

12. The method according to claim 11, wherein, The third duration includes an integer number of symbols; or, the third duration includes an integer number of time slots.

13. The method according to any one of claims 1 to 4, wherein, The number of symbols included in one SSB is greater than or equal to 4.

14. According to the method of claim 13, wherein, Four of the SSBs are included in two time slots; or, Two of the SSBs are included in one time slot; or, One of the SSBs is included in one time slot.

15. The method according to any one of claims 1 to 4, wherein, The length of the time-domain resources occupied by the first SSB transmission opportunity in the time domain is less than or equal to the fourth duration.

16. The method according to claim 15, wherein, The fourth duration includes an integer number of symbols; or, the fourth duration includes an integer number of time slots.

17. The method according to claim 16, wherein, The first symbol of the first SSB in the first SSB transmission opportunity is the first symbol of the first time slot included within the fourth duration.

18. The method according to any one of claims 1 to 4, wherein The method further includes: The first device determines a second SSB transmission opportunity corresponding to a second subcarrier spacing, where 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.

19. The method according to claim 18, wherein, 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.

20. The method according to any one of claims 1 to 4, wherein The first subcarrier spacing includes at least one of the following: 480 kHz, 960 kHz, 1.92 MHz, 3.84 MHz.

21. The method according to any one of claims 1 to 4, wherein The first device is a terminal device, and the method further includes: The terminal device receives an SSB based on the first SSB transmission opportunity.

22. The method according to any one of claims 1 to 4, wherein, The first device is a network device, and the method further includes: The network device sends an SSB based on the first SSB transmission opportunity.

23. A device for determining an SSB, applied to a first device, the device includes: A determination unit, configured to determine a first SSB transmission opportunity corresponding to a first subcarrier spacing, the first subcarrier spacing being greater than 240 kHz, the first SSB transmission opportunity including N SSBs, where one SSB includes a PSS, an SSS, and a PBCH, and the first SSB transmission opportunity is used for cell initial access of the cell corresponding to the first device, and N is a positive integer; Wherein, the N SSBs include M groups of SSBs, M is a positive integer greater than or equal to 2, the length of the time-domain resources occupied by each group of SSBs in the M groups of SSBs in the time domain is less than or equal to a first duration, the SSB patterns of any two groups of SSBs in the M groups of SSBs are the same in the time domain, and the interval between two adjacent groups of SSBs in the M groups of SSBs in the time domain is greater than or equal to a second duration.

24. The device according to claim 23, wherein, The SSB index of the first SSB among the N SSBs is indicated by X bits, X is a positive integer, where 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 a reference signal in the first SSB, where the reference signal includes at least one of PSS, SSS, and DMRS in the first SSB, and the DMRS is used to demodulate the PBCH in the first SSB.

25. The apparatus according to claim 24, wherein, The X is a positive integer greater than 6, and the X bits include a first part of bits and a second part of bits; the first part of bits is carried by the PBCH in the first SSB, and the second part of bits is carried by the reference signal in the first SSB.

26. The device according to claim 25, 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.

27. The apparatus according to any one of claims 23 to 26, wherein, The first duration is less than or equal to the length of the time-domain resources allowed for transmission in the first channel access mode.

28. The apparatus according to any one of claims 23 to 26, wherein The first duration is less than or equal to 1 millisecond; or, the first duration is less than or equal to 584 microseconds.

29. The device according to any one of claims 23 to 26, wherein, The first duration includes an integer number of symbols; or, the first duration includes an integer number of time slots.

30. The device according to any one of claims 23 to 26, wherein, The second duration is greater than or equal to the transceiver conversion time length.

31. The device according to any one of claims 23 to 26, wherein, The second duration is used to transmit physical channels and / or physical signals with a specific priority.

32. The apparatus according to any one of claims 23 to 26, wherein, The second duration includes an integer number of symbols; or, the second duration includes an integer number of time slots.

33. The apparatus according to any one of claims 23 to 26, wherein, For a group of SSBs in the M groups of SSBs, the time-domain interval between at least two adjacent SSBs included in the group of SSBs is greater than or equal to a third duration.

34. The apparatus according to claim 33, wherein, The third duration includes an integer number of symbols; or, the third duration includes an integer number of time slots.

35. The apparatus according to any one of claims 23 to 26, wherein The number of symbols included in one SSB is greater than or equal to 4.

36. The apparatus according to claim 35, wherein, Four of the SSBs are included in two time slots; or, Two of the SSBs are included in one time slot; or, One of the SSBs is included in one time slot.

37. The device according to any one of claims 23 to 26, wherein, The length of the time-domain resources occupied by the first SSB transmission opportunity in the time domain is less than or equal to a fourth duration.

38. The apparatus according to claim 37, wherein, The fourth duration includes an integer number of symbols; or, the fourth duration includes an integer number of time slots.

39. The apparatus according to claim 38, wherein, 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.

40. The device according to any one of claims 23 to 26, wherein, The determining unit is further configured to determine a second SSB transmission opportunity corresponding to a second subcarrier spacing, where, 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.

41. The apparatus according to claim 40, wherein, 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.

42. The device according to any one of claims 23 to 26, wherein, The first subcarrier spacing includes at least one of the following: 480 kHz, 960 kHz, 1.92 MHz, 3.84 MHz.

43. The apparatus according to any one of claims 23 to 26, wherein, The first device is a terminal device, and the apparatus further includes: A communication unit, configured to receive an SSB based on the first SSB transmission opportunity.

44. The apparatus according to any one of claims 23 to 26, wherein The first device is a network device, The apparatus further includes: A communication unit, configured to send an SSB based on the first SSB transmission opportunity.

45. A communication device, comprising: A processor and a memory, the memory is configured to store a computer program, and the processor is configured to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 22.

46. A chip applied to a communication device, comprising: A processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the method according to any one of claims 1 to 22.

47. A computer-readable storage medium, configured to store a computer program, where the computer program causes a computer to execute the method according to any one of claims 1 to 22.

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