SSB transmission methods on unlicensed spectrum, apparatus, and device

Abstract

The present application belongs to the field of communications. Disclosed are SSB transmission methods on an unlicensed spectrum, an apparatus and a device. An SSB transmission method on an unlicensed spectrum of the embodiments of the present application comprises: a terminal receives or detects an SSB, the SSB meeting at least one of the following: FDM with other SSBs, FDM between different portions within the SSB, using interleaved resources, being located in a specific bandwidth, and being associated with a specific waveform, wherein the width of the specific bandwidth is less than or equal to a first threshold, and the corresponding bandwidth of the specific waveform on the unlicensed spectrum is greater than or equal to a second threshold. In the embodiments of the present application, the SSB meets at least one of the following: FDM with other SSBs, FDM between different portions within the SSB, using interleaved resources, being located at the specific bandwidth and being associated with the specific waveform, thereby improving the spectrum bandwidth occupied by the SSB to meet OCB requirements.

Description

SSB transmission method, device and equipment on unlicensed spectrum

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on January 2, 2024, with application number 202410013317.2 and titled “SSB transmission method, device and apparatus on unlicensed spectrum”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of communications, and more specifically, to a method, apparatus, and device for transmitting SSB on an unlicensed spectrum. Background Art

[0004] In unlicensed spectrum, there are clear requirements for occupied channel bandwidth (OCB). OCB is defined as the bandwidth that occupies 99% of the signal energy, generally ranging from 80% to 100% of the nominal channel bandwidth (NCB). For example, for a 20MHz channel bandwidth, to meet the 80% OCB requirement, the terminal's uplink signal must occupy 16MHz of spectrum bandwidth.

[0005] When a synchronization signal block (SSB) is transmitted on an unlicensed spectrum, how to design the SSB to meet the OCB requirements is a problem that needs to be solved. Summary of the Invention

[0006] The embodiments of the present application provide a method, apparatus, and device for transmitting SSB on an unlicensed spectrum, wherein the SSB satisfies at least one of the following: FDM between other SSBs, FDM between different parts of the SSB, use of interleaved resources, location in a specific bandwidth, and association with a specific waveform, thereby increasing the spectrum bandwidth occupied by the SSB to meet OCB requirements and solving the problem that SSB transmission on the unlicensed spectrum cannot meet OCB requirements.

[0007] In a first aspect, a method for SSB transmission in an unlicensed spectrum is provided, comprising:

[0008] The terminal receives or detects a synchronization signal block SSB;

[0009] The SSB satisfies at least one of the following: frequency division multiplexing (FDM) with other SSBs, FDM between different parts of the SSB, uses interleaved resources, is located in a specific bandwidth, and is associated with a specific waveform;

[0010] The width of the specific bandwidth is less than or equal to a first threshold, and the bandwidth corresponding to the specific waveform on the unlicensed spectrum is greater than or equal to a second threshold.

[0011] In a second aspect, a method for SSB transmission on an unlicensed spectrum is provided, including:

[0012] The network side device sends a synchronization signal block SSB;

[0013] The SSB satisfies at least one of the following: frequency division multiplexing (FDM) with other SSBs, uses interleaved resources, is located in a specific bandwidth, and is associated with a specific waveform;

[0014] The width of the specific bandwidth is less than or equal to a first threshold, and the bandwidth corresponding to the specific waveform on the unlicensed spectrum is greater than or equal to a second threshold.

[0015] In a third aspect, a SSB transmission apparatus on an unlicensed spectrum is provided, including:

[0016] A transceiver unit, configured to receive or detect a synchronization signal block SSB;

[0017] The SSB satisfies at least one of the following: frequency division multiplexing (FDM) with other SSBs, FDM between different parts of the SSB, uses interleaved resources, is located in a specific bandwidth, and is associated with a specific waveform;

[0018] The width of the specific bandwidth is less than or equal to a first threshold, and the bandwidth corresponding to the specific waveform on the unlicensed spectrum is greater than or equal to a second threshold.

[0019] In a fourth aspect, a SSB transmission apparatus on an unlicensed spectrum is provided, including:

[0020] A transceiver unit, configured to send a synchronization signal block SSB;

[0021] The SSB satisfies at least one of the following: frequency division multiplexing (FDM) with other SSBs, FDM between different parts of the SSB, uses interleaved resources, is located in a specific bandwidth, and is associated with a specific waveform;

[0022] The width of the specific bandwidth is less than or equal to a first threshold, and the bandwidth corresponding to the specific waveform on the unlicensed spectrum is greater than or equal to a second threshold.

[0023] In a fifth aspect, a terminal is provided, comprising a transceiver, a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0024] In a sixth aspect, a terminal is provided, comprising a processor and a communication interface;

[0025] Wherein, the communication interface is used to receive or detect a synchronization signal block SSB;

[0026] The SSB satisfies at least one of the following: frequency division multiplexing (FDM) with other SSBs, FDM between different parts of the SSB, uses interleaved resources, is located in a specific bandwidth, and is associated with a specific waveform;

[0027] The width of the specific bandwidth is less than or equal to a first threshold, and the bandwidth corresponding to the specific waveform on the unlicensed spectrum is greater than or equal to a second threshold.

[0028] In the seventh aspect, a network side device is provided, which includes a transceiver, a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0029] In an eighth aspect, a network-side device is provided, including a processor and a communication interface;

[0030] Wherein, the communication interface is used to send a synchronization signal block SSB;

[0031] The SSB satisfies at least one of the following: frequency division multiplexing (FDM) with other SSBs, FDM between different parts of the SSB, uses interleaved resources, is located in a specific bandwidth, and is associated with a specific waveform;

[0032] The width of the specific bandwidth is less than or equal to a first threshold, and the bandwidth corresponding to the specific waveform on the unlicensed spectrum is greater than or equal to a second threshold.

[0033] In the ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0034] In the tenth aspect, a wireless communication system is provided, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect.

[0035] In the eleventh aspect, a chip is provided, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0036] In the twelfth aspect, a computer program / program product is provided, which is stored in a storage medium and executed by at least one processor to implement the steps of the SSB transmission method on unlicensed spectrum as described in the first aspect or the second aspect.

[0037] In embodiments of the present application, an SSB satisfies at least one of the following: FDM between other SSBs, FDM between different parts of the SSB, use of interleaved resources, location in a specific bandwidth, and association with a specific waveform. This increases the spectral bandwidth occupied by the SSB to meet OCB requirements, resolving the issue of SSB transmission on unlicensed spectrum failing to meet OCB requirements. For example, by designing an FDM-based SSB (FDMed SSB), the spectral bandwidth occupied by the SSB can be increased, thereby meeting OCB requirements and reducing SSB transmission latency. For another example, by designing an interlace structure that supports transmission of at least one of the PSS, SSS, and PBCH within the SSB, the spectral bandwidth occupied by the SSB can be increased, thereby meeting OCB requirements. For another example, if the width of the specific bandwidth is less than or equal to a first threshold, designing the specific bandwidth can increase the spectral bandwidth occupied by the SSB to meet OCB requirements. For another example, if the bandwidth corresponding to the specific waveform on the unlicensed spectrum is greater than or equal to a second threshold, designing the specific waveform can increase the spectral bandwidth occupied by the SSB to meet OCB requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0039] FIG1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application.

[0040] FIG2 is a schematic diagram of an SSB provided in this application.

[0041] Figure 3 is a schematic flowchart of an SSB transmission method on an unlicensed spectrum provided according to an embodiment of the present application.

[0042] 4 to 7 are schematic diagrams of frequency division multiplexing SSB provided according to embodiments of the present application.

[0043] Figure 8 is a schematic block diagram of an SSB transmission device on an unlicensed spectrum provided according to an embodiment of the present application.

[0044] Figure 9 is a schematic block diagram of another SSB transmission device on unlicensed spectrum provided according to an embodiment of the present application.

[0045] FIG10 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

[0046] FIG11 is a schematic diagram of the hardware structure of a terminal provided according to an embodiment of the present application.

[0047] FIG12 is a schematic block diagram of a network-side device provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0048] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0049] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0050] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0051] It is worth noting that the technology described in the embodiments of the present application is not limited to the Internet of Things (IoT) system, but can also be used in other wireless communication systems, such as Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), Bluetooth systems, or other systems. In the embodiments of the present application, the terms "system" and "network" are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these techniques can also be applied to systems other than NR systems, such as 6G (6 th Generation, 6G) communication system.

[0052] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, vehicle-mounted controller, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application.

[0053] The network side device 12 may include an access network device or a core network device.

[0054] Access network equipment can also be referred to as radio access network (RAN) equipment, radio access network functions, or radio access network units. Access network equipment can include base stations, wireless local area network (WLAN) access points (AS), or wireless fidelity (WiFi) nodes. Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home evolved Node B (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0055] Among them, the core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (MME), access mobility management function (AMF), session management function (SMF), user plane function (UPF), policy control function (PCF), policy and charging rules function unit (PCRF), edge application service discovery function (EASDF), unified data management (UDM), unified data repository (UDR), home user server (HSS), centralized network configuration (CNC), network storage function (NRF), network exposure function (NEF), local NEF (L-NEF), binding support function (BSF), application function ( Function, AF), Network Data Analytics Function (NWDAF), Location Management Function (LMF), etc. It should be noted that in the embodiment of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0056] To facilitate a better understanding of the embodiments of the present application, the synchronization signal and PBCH are explained.

[0057] In order for the terminal to search for a reasonable cell and synchronize with the selected cell, the network usually needs to broadcast a synchronization signal and provide certain master information about the cell. Specifically, the SSB can be shown in Figure 2. The synchronization signal (SS) mainly includes the primary synchronization signal (PSS) and the secondary synchronization signal (SSS). Among them, the PSS and SSS can occupy 127 subcarriers, and the physical broadcast channel (PBCH) on both sides of the SSS can occupy 4 physical resource blocks (PRBs). The PBCH can carry the main system information, also known as the master information block (Master Information Block).

[0058] It should be noted that SSB can also be called synchronization signal / physical broadcast channel block (SS / PBCH block).

[0059] To facilitate a better understanding of the embodiments of the present application, a sync raster and GSCN are described.

[0060] 5G NR defines a synchronization raster for the 0-100 GHz frequency band. The synchronization raster number is called the Global Synchronization Channel Number (GSCN). Base stations can send SSBs (also known as synchronization signals / physical broadcast signal blocks (SS / PBCH blocks)) on the synchronization raster. The location and calculation of the GSCN in different frequency domains are shown in Table 1 below.

[0061] For example, when GSCN=2, it can be deduced that N=1, M=1, and thus the corresponding frequency domain position is 1250 kHz.

[0062] Table 1

[0063] According to NR's frequency domain planning, supportable channel bandwidths (bands) are defined for different operating frequency bands based on different subcarrier spacings (SCS). Table 2 below provides information about the channel bandwidth for band n1. For example, for band n1, when the SCS of the transmitted data / control signal is 15 kHz, the minimum channel bandwidth for this band is 5 MHz.

[0064] Table 2

[0065] NR defines GSCN ranges and step sizes for different bands. The step size is the difference between the GSCN numbers of two adjacent synchronization grids belonging to the band. For example, the GSCN range for n41 is 6246–6714. With a step size of 3, the GSCN numbers within the n41 range are 6246, 6249, ..., 6714.

[0066] It should be noted that there may be frequency overlap between different bands. For example, as shown in Table 3 below, band n38 and band n41 overlap, but the GSCN step sizes are different.

[0067] Table 3

[0068] To facilitate a better understanding of the embodiments of the present application, interleaved resource allocation on an unlicensed band is described.

[0069] In the unlicensed spectrum, it is defined that the spectrum should be used in a fair manner, and there are clear requirements for OCB. OCB is defined as the bandwidth that occupies 99% of the signal energy, generally between 80% and 100% of the nominal occupied bandwidth (NCB) (70% to 100% for the 60GHz band). For example, for a 20MHz channel bandwidth, to meet the 80% OCB bandwidth requirement, the terminal's uplink signal needs to be converted to occupy a 16MHz spectrum bandwidth. The nominal occupied bandwidth (NCB) refers to the widest frequency band allocated to a single channel, including guard band channels. In addition, spectrum power density (SPD) limits are defined for unlicensed spectrum. SPD is the average equivalent isotropic radiated power (EIRP) density, measured in dBm / MHz, and cannot exceed a certain upper limit. For example, for the frequency band from 5470MHz to 5725MHz, for terminals that allow transmit power control, the power density cannot exceed 17dBm / MHz; for terminals that do not allow transmit power control, the power density cannot exceed 14dBm / MHz.

[0070] To meet OCB requirements and increase transmit power while still meeting SPD requirements, interleave-based resource allocation is designed. This divides frequency domain resources into different interlaces, with resource allocation performed on an interlace basis, such as in Type 2 UL resource allocation. The number of interlaces within a Band Width Part (BWP) is related to the subcarrier spacing (SCS). For example, with a 15 kHz subcarrier spacing, the number of interlaces, M, is 10 (i.e., the spacing between two adjacent physical resource blocks (PRBs) within an interlace). The number of PRBs within each interlace is related to the bandwidth. For example, with a 20 MHz bandwidth, the total number of PRBs within the bandwidth is 106, with each interlace containing 10 or 11 PRBs. For another example, with a 30 kHz subcarrier spacing, M is 5. The number of PRBs within each interlace is related to the bandwidth. For example, with a 20 MHz bandwidth, the total number of PRBs within the bandwidth is 51, with each interlace containing 10 or 11 PRBs.

[0071] In order to indicate the interlaces allocated to the terminal, when allocating resources, a 5-bit bitmap is used to indicate which interlaces are allocated to the terminal at 30kHz; a 6-bit Resource Indication Value (RIV) is used to indicate which interlaces are allocated at 15kHz.

[0072] In unlicensed spectrum, it is necessary to listen before talking (LBT) before transmission. Since the frequency domain granularity of clear channel assessment (CCA) on 5GHz is 20MHz, resource allocation in NR (NR-based access to unlicensed spectrum, NR-U) on unlicensed spectrum needs to be performed in units of LBT frequency domain granularity, such as 20MHz, 40MHz, 60MHz, and 80MHz. When the BWP bandwidth is larger than one LBT bandwidth, when scheduling the physical uplink shared channel (PUSCH) transmission, the base station can schedule the PUSCH for transmission on part of the BWP, that is, by indicating the allocated LBT bandwidth (or resource block set (RB set), one RB set corresponds to one LBT bandwidth) to schedule the PUSCH for transmission on all or part of the BWP. The terminal determines the PRB resources allocated for the PUSCH according to the indicated interlace and RB set and intra-carrier guard band (Radio Resource Control (RRC) configuration or protocol agreement).

[0073] For the NR-U random access response (Random Access Response, RAR) uplink grant (UL grant) contains 12 bits to indicate the frequency domain resource allocation, where X (if the SCS of the activated BWP is 15kHz, X=6, if the SCS of the activated BWP is 30kHz, X=5) bit is used to indicate the allocated interlace.

[0074] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be combined arbitrarily with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0075] FIG3 is a schematic flowchart of a method 200 for transmitting SSB over an unlicensed spectrum according to an embodiment of the present application. As shown in FIG3 , the method 200 for transmitting SSB over an unlicensed spectrum may include at least part of the following:

[0076] S210: The network-side device sends an SSB; wherein the SSB satisfies at least one of the following conditions: FDM between other SSBs, FDM between different parts of the SSB, uses interleaved resources, is located in a specific bandwidth, and is associated with a specific waveform; wherein the width of the specific bandwidth is less than or equal to a first threshold, and the bandwidth corresponding to the specific waveform in the unlicensed spectrum is greater than or equal to a second threshold;

[0077] S220: The terminal receives or detects the SSB.

[0078] It should be understood that Figure 3 shows the steps or operations of the SSB transmission method 200 on the unlicensed spectrum, but these steps or operations are only examples. The embodiments of the present application can also perform other operations or variations of the various operations in Figure 3.

[0079] The SSB described in the embodiments of the present application can be used interchangeably with the synchronization signal / physical broadcast signal block (SS / PBCH block), and can also be called any information block or resource block that contains at least one of a synchronization signal, a broadcast signal, a broadcast channel, other system messages, and a downlink broadcast channel.

[0080] For example, the frequency division multiplexing (FDM) between the SSB described in the embodiment of the present application and other SSBs, or the FDM between different parts of the SSB described in the embodiment of the present application, can increase the spectrum bandwidth occupied by the SSB by designing an FDM SSB (FDMed SSB), thereby meeting the OCB requirements and reducing the transmission delay of the SSB. Optionally, the other SSB can be an SSB on an unlicensed spectrum or an SSB on an authorized spectrum.

[0081] Exemplarily, in order to meet the OCB requirement and reduce the detection complexity of SSB, at least two SSBs can be frequency-division multiplexed, and each SSB is on a certain sync raster, or there is a frequency domain interval between at least two SSBs.

[0082] For example, the SSB described in the embodiment of the present application uses interlaced resources (Interlaced SSB). By designing an interlaced structure (interlace) that supports the transmission of at least one of the PSS, SSS and PBCH in the SSB, the spectrum bandwidth occupied by the SSB can be increased, thereby meeting the OCB requirements.

[0083] Exemplarily, the SSB described in the embodiment of the present application is located in a specific bandwidth, wherein the width of the specific bandwidth is less than or equal to a first threshold. By designing the specific bandwidth, the spectrum bandwidth occupied by the SSB can be increased, thereby meeting the OCB requirements.

[0084] Optionally, the specific bandwidth may be a narrowband, and the specific bandwidth may be agreed upon by a protocol or configured by a network side.

[0085] Optionally, the first threshold is agreed upon by a protocol, or the first threshold is configured by a network side.

[0086] Exemplarily, the SSB associated with the specific waveform described in the embodiment of the present application, wherein the bandwidth corresponding to the specific waveform on the unlicensed spectrum is greater than or equal to the second threshold, can increase the spectrum bandwidth occupied by the SSB by designing the specific waveform, thereby meeting the OCB requirements.

[0087] Optionally, the specific beam may be an orthogonal time and frequency space (OTFS) waveform or other waveforms, which is not limited in the embodiment of the present application.

[0088] Optionally, the second threshold is agreed upon by a protocol, or the second threshold is configured by the network side.

[0089] In an embodiment of the present application, the SSB satisfies at least one of the following: FDM between other SSBs, FDM between different parts of the SSB, use of interleaved resources, location in a specific bandwidth, and association with a specific waveform, thereby increasing the spectrum bandwidth occupied by the SSB to meet the OCB requirements and solving the problem that SSB transmission on unlicensed spectrum cannot meet the OCB requirements.

[0090] In some embodiments, at least two SSBs can be located in different frequency domain positions through frequency division multiplexing. Even if some SSBs are not sent, or some SSBs are on-demand SSBs (on demand SSBs) and are activated or deactivated, it will not affect the downlink LBT requirements. Therefore, this embodiment is suitable for network energy-saving unlicensed frequency domain transmission and can reduce network energy consumption.

[0091] In some embodiments, at least two SSBs can be in different interlace structures. Even if some SSBs are not sent, or some SSBs are on-demand SSBs and are activated or deactivated, it will not affect the downlink LBT requirements. Therefore, this embodiment is suitable for network energy-saving unlicensed frequency domain transmission and can reduce network energy consumption.

[0092] In some embodiments, the network side device can additionally schedule other downlink signals in the non-SSB frequency band in the time unit where the SSB is located as described in the embodiments of the present application, thereby increasing the spectrum bandwidth occupied by the SSB to meet the OCB requirements.

[0093] In some embodiments, the SSB of the FDM satisfies at least one of the following:

[0094] Located in the unlicensed band;

[0095] Located on a synchronization grid, wherein at least two synchronization grids exist in one or each frequency domain unit of the preset frequency domain unit, and an SSB exists on each synchronization grid of the at least two synchronization grids;

[0096] The frequency domain span of at least two SSBs in one or each of the preset frequency domain units is greater than or equal to a third threshold;

[0097] The ratio of the frequency domain span of at least two SSBs in one or each frequency domain unit in the preset frequency domain unit to the frequency domain unit is greater than or equal to a fourth threshold (such as 80%);

[0098] There are two specific SSBs on one or each frequency domain unit in the preset frequency domain units, wherein one specific SSB is located at an upper edge of the frequency domain and the other specific SSB is located at a lower edge of the frequency domain;

[0099] There are two specific SSBs in one or each frequency domain unit in the preset frequency domain units, wherein one specific SSB is located at an upper edge of the frequency domain, and the other specific SSB is located at a lower edge of the frequency domain, and a frequency domain interval between the specific SSB located at the upper edge of the frequency domain and the specific SSB located at the lower edge of the frequency domain is greater than or equal to a fifth threshold;

[0100] There are two specific SSBs in one or each of the preset frequency domain units, one specific SSB is located at an upper edge of the frequency domain, and the other specific SSB is located at a lower edge of the frequency domain, and a ratio of the frequency domain interval between the specific SSB located at the upper edge of the frequency domain and the specific SSB located at the lower edge of the frequency domain to the frequency domain unit is greater than or equal to a sixth threshold (e.g., 80%);

[0101] There is at least one first SSB, where the first SSB is used to indicate whether there is an SSB that is repeated in the frequency domain.

[0102] Whether an SSB has an SSB that repeats its frequency domain is associated with at least one of the following: bandwidth (band), subband (subband), subcarrier spacing (SCS), waveform;

[0103] There are at least two SSBs in the same time unit, and the at least two SSBs are in different synchronization rasters;

[0104] At least two SSBs are located in the same time unit, and the at least two SSBs include a second SSB, the second SSB is located on the synchronization grid, and there is a frequency domain offset between other SSBs in the at least two SSBs and the second SSB;

[0105] There are at least two SSBs, wherein the at least two SSBs include a third SSB, and the third SSB is frequency-division multiplexed with a portion of a signal or channel in another SSB on a portion of time domain resources;

[0106] There are at least two SSBs, wherein the at least two SSBs include a fourth SSB, which is frequency-division multiplexed with a portion of the signal or channel in one SSB on a portion of the time domain resources, and the fourth SSB is frequency-division multiplexed with a portion of the signal or channel in another SSB on another portion of the time domain resources.

[0107] In some embodiments, at least one SSB may exist between two specific SSBs existing in one or each frequency domain unit.

[0108] In some embodiments, the first SSB is located on a sync raster.

[0109] In some embodiments, the second SSB is used to indicate system information required for cell access, such as SIB1.

[0110] In some embodiments, whether an SSB has a frequency-domain duplicate SSB may be determined by a protocol, or whether an SSB has a frequency-domain duplicate SSB may be configured by the network. For example, whether a corresponding SSB has a frequency-domain duplicate SSB may be predetermined for different bands, subbands, subcarrier spacings, and waveforms.

[0111] In some embodiments, one or each of the preset frequency domain units is an entire bandwidth (such as 20M), or, one or each of the preset frequency domain units is a partial bandwidth in the entire bandwidth, or, one or each of the preset frequency domain units is at least two discontinuous bandwidths.

[0112] In some embodiments, one of the preset frequency domain units may be a specific frequency domain unit.

[0113] In some embodiments, the SCS that can be supported by the SSB of FDM includes but is not limited to at least one of the following: 15kHz, 30kHz, 60kHz.

[0114] Exemplarily, there is at least one first SSB, where the first SSB is used to indicate whether there is an SSB that repeats with its frequency domain. This embodiment can improve the coverage performance of the SSB. For example, there can be more than two synchronization rasters (sync rasters) within 20 MHz, and a larger number of SSBs can be sent in an FDM manner to improve coverage. The terminal can determine whether there is an SSB that repeats with its frequency domain based on the first SSB.

[0115] In some embodiments, the frequency domain unit described in the embodiments of the present application may include one of the following: cell, carrier, BWP, resource pool, frequency band (band), subband (subband).

[0116] In some embodiments, the time unit described in the embodiments of the present application includes but is not limited to at least one of the following:

[0117] OFDM symbol, time slot, subframe, frame, microsecond, millisecond, second, minute, hour, day.

[0118] For example, as shown in FIG4 , in the unlicensed spectrum, a frequency domain offset may be configured between two FDMed SSBs, wherein the PBCH may occupy X resource blocks (RBs), for example, X=12.

[0119] Exemplarily, there are at least two SSBs in the unlicensed spectrum, wherein the at least two SSBs include a third SSB, and the third SSB is frequency-division multiplexed with a portion of the signal or channel in another SSB on a portion of the time domain resources, thereby reducing the overhead of the SSB resources. For example, as shown in FIG5 , the third SSB can multiplex a portion of the PBCH signal of another SSB on the high frequency portion of the first symbol and the second symbol.

[0120] Exemplarily, there are at least two SSBs in an unlicensed spectrum, wherein the at least two SSBs include a fourth SSB, the fourth SSB is frequency-division multiplexed with a portion of a signal or channel in one SSB on a portion of time domain resources, and the fourth SSB is frequency-division multiplexed with a portion of a signal or channel in another SSB on another portion of time domain resources, thereby reducing the overhead of SSB resources. For example, as shown in FIG6 , the fourth SSB may multiplex a portion of the PBCH signal of one SSB in the high-frequency portion of the first and second symbols, and the fourth SSB may multiplex a portion of the PBCH signal of another SSB in the low-frequency portion of the third and fourth symbols.

[0121] For example, in an unlicensed spectrum, there is an SSB, where different parts of the SSB are frequency-division multiplexed. For example, as shown in FIG7 , the PSS signal in an SSB is frequency-multiplexed with the PBCH signal, and the SSS signal in the SSB is frequency-multiplexed with the PBCH signal, thereby enabling large-bandwidth SSB transmission and meeting OCB requirements.

[0122] In some embodiments, transmission of at least one of the PSS, SSS, and PBCH in the SSB using interleaved resources supports at least one of the following:

[0123] Interleaving structure based on PRB group granularity, interleaving structure based on PRB granularity, interleaving structure based on sub-PRB granularity, interleaving structure based on subcarrier granularity, and interleaving structure based on specific frequency domain unit granularity.

[0124] It should be noted that the interleaving structure based on the PRB group granularity may refer to the interleaving structure configured at the PRB group granularity, the interleaving structure based on the PRB granularity may refer to the interleaving structure configured at the PRB granularity, the interleaving structure based on the sub-PRB granularity may refer to the interleaving structure configured at the sub-PRB granularity, the interleaving structure based on the subcarrier granularity may refer to the interleaving structure configured at the subcarrier granularity, and the interleaving structure based on the specific frequency domain unit granularity may refer to the interleaving structure configured at the specific frequency domain unit granularity.

[0125] Optionally, the specific frequency domain unit may be agreed upon by a protocol, or the specific frequency domain unit may be configured by the network side.

[0126] In some embodiments, the interleaving structure supported by transmission of at least one of the PSS, SSS, and PBCH in the SSB using interleaved resources satisfies at least one of the following:

[0127] The intervals between two adjacent frequency domain units are the same;

[0128] The intervals between two adjacent frequency domain units are different;

[0129] At least one of the size of each frequency domain unit, the interval between two adjacent frequency domain units, and the total number of frequency domain units is agreed upon by the protocol or configured on the network side;

[0130] At least one of the size of each frequency domain unit, the interval between two adjacent frequency domain units, and the total number of frequency domain units is determined based on the capability reported by the terminal;

[0131] Different frequency domain units use different cyclic shift or phase rotation methods.

[0132] For example, different frequency domain units of interlaced SSB use different cyclic shifts, phase rotations, and other means to reduce peak-to-average power ratio (PAPR).

[0133] In some embodiments, resources of SSBs and their associated signals using interleaved resources are multiplexed in different interleaving structures. Alternatively, resources of SSBs and their associated signals using interleaved resources are time-division multiplexed in different interleaving structures; or resources of SSBs and their associated signals using interleaved resources are frequency-division multiplexed in different interleaving structures. Exemplarily, the multiplexing method of resources of SSBs and their associated signals using interleaved resources may be configured by the network or agreed upon by a protocol.

[0134] In some embodiments, the SSB-associated signal using interleaved resources includes but is not limited to at least one of the following:

[0135] Positioning reference signals (PRS), tracking reference signal (TRS), channel state information reference signal (CSI-RS), downlink broadcast signal.

[0136] In some embodiments, the relationship between the SSB using the interleaved resources and the synchronization grid satisfies at least one of the following:

[0137] The center frequency of the frequency domain span of the SSB using interleaved resources is on the synchronization grid;

[0138] The starting or ending frequency point of the frequency domain span of the SSB using interleaved resources is on the synchronization grid;

[0139] The center frequency point of a specific frequency domain unit corresponding to the SSB using interleaved resources is on the synchronization grid;

[0140] The starting or ending frequency point of a specific frequency domain unit corresponding to the SSB using interleaved resources is on the synchronization grid.

[0141] In this embodiment, frequency domain resource information of the SSB using interleaved resources may be determined based on the relationship between the SSB using interleaved resources and the synchronization grid.

[0142] Exemplarily, the relationship between the cell defined (CD) SSB using interleaved resources and the synchronization grid satisfies at least one of the following:

[0143] The center frequency of the frequency domain span of the SSB using interleaved resources is on the synchronization grid;

[0144] The starting or ending frequency point of the frequency domain span of the SSB using interleaved resources is on the synchronization grid;

[0145] The center frequency point of a specific frequency domain unit corresponding to the SSB using interleaved resources is on the synchronization grid;

[0146] The starting or ending frequency point of a specific frequency domain unit corresponding to the SSB using interleaved resources is on the synchronization grid.

[0147] Optionally, the specific frequency domain unit corresponding to the SSB using the interleaved resources may include at least one of the following:

[0148] The starting frequency domain unit of the SSB using interleaved resources, the ending frequency domain unit of the SSB using interleaved resources, and the middle frequency domain unit of the SSB using interleaved resources.

[0149] In some embodiments, when determining the offset corresponding to the frequency domain resource grid, the reference frequency point is at least one of the following:

[0150] The center frequency of the frequency domain span of the SSB using interleaved resources, the starting or ending frequency of the frequency domain span of the SSB using interleaved resources, the center frequency of the specific frequency domain unit corresponding to the SSB using interleaved resources, and the starting or ending frequency of the specific frequency domain unit corresponding to the SSB using interleaved resources.

[0151] Exemplarily, the frequency domain resource grid may be a common resource block grid (Common RB grid).

[0152] In this embodiment, the reference frequency point when determining the offset corresponding to the frequency domain resource grid can be determined based on the frequency domain resource information of the SSB using interleaved resources.

[0153] In some embodiments, when determining the offset corresponding to the frequency domain resource grid, the reference frequency domain granularity unit is at least one of the following: the center frequency domain granularity unit of the frequency domain span of the SSB using interleaved resources, the starting or ending frequency domain granularity unit of the frequency domain span of the SSB using interleaved resources, the center frequency domain granularity unit of the specific frequency domain unit corresponding to the SSB using interleaved resources, and the starting or ending frequency domain granularity unit of the specific frequency domain unit corresponding to the SSB using interleaved resources.

[0154] Exemplarily, the frequency domain granularity unit may be at least one of the following: a subcarrier, an RB.

[0155] In this embodiment, the reference frequency domain granularity unit when determining the offset corresponding to the frequency domain resource grid can be determined based on the frequency domain resource information of the SSB using interleaved resources.

[0156] In some embodiments, when determining the offset of the control resource set (such as CORESET 0) associated with the scheduling system information indicated by the downlink control channel of the scheduling system information, the reference frequency is at least one of the following: the center frequency of the frequency domain span of the SSB using interleaved resources, the starting or ending frequency of the frequency domain span of the SSB using interleaved resources, the center frequency of the specific frequency domain unit corresponding to the SSB using interleaved resources, and the starting or ending frequency of the specific frequency domain unit corresponding to the SSB using interleaved resources.

[0157] In this embodiment, the reference frequency point for determining the offset of the control resource set (such as CORESET 0) associated with the scheduling system information indicated by the downlink control channel of the scheduling system information can be determined based on the frequency domain resource information of the SSB using interleaved resources.

[0158] In some embodiments, when determining the offset of the control resource set (such as CORESET 0) associated with the scheduling system information indicated by the downlink control channel of the scheduling system information, the reference frequency domain granularity unit is at least one of the following: the center frequency domain granularity unit of the frequency domain span of the SSB using interleaved resources, the starting or ending frequency domain granularity unit of the frequency domain span of the SSB using interleaved resources, the center frequency domain granularity unit of the specific frequency domain unit corresponding to the SSB using interleaved resources, and the starting or ending frequency domain granularity unit of the specific frequency domain unit corresponding to the SSB using interleaved resources.

[0159] In this embodiment, the reference frequency domain granularity unit when determining the offset of the control resource set (such as CORESET 0) associated with the scheduling system information indicated by the downlink control channel of the scheduling system information can be determined based on the frequency domain resource information of the SSB using interleaved resources.

[0160] Therefore, in an embodiment of the present application, the SSB satisfies at least one of the following: FDM SSB with other SSBs, FDM between different parts of the SSB, use of interleaved resources, location in a specific bandwidth, and association with a specific waveform, thereby increasing the spectrum bandwidth occupied by the SSB to meet the OCB requirements and reduce the transmission delay of the SSB. At the same time, the embodiment of the present application can support network energy-saving transmission, thereby reducing network energy consumption. For example, by designing an FDM SSB (FDMed SSB), the spectrum bandwidth occupied by the SSB can be increased, thereby meeting the OCB requirements and reducing the transmission delay of the SSB. For another example, by designing an interleaved structure (interlace) supported by the transmission of at least one of the PSS, SSS, and PBCH in the SSB, the spectrum bandwidth occupied by the SSB can be increased, thereby meeting the OCB requirements. For another example, the width of the specific bandwidth is less than or equal to the first threshold. By designing the specific bandwidth, the spectrum bandwidth occupied by the SSB can be increased, thereby meeting the OCB requirements. For another example, the bandwidth corresponding to the specific waveform in the unlicensed spectrum is greater than or equal to the second threshold. By designing the specific waveform, the spectrum bandwidth occupied by SSB can be increased, thereby meeting the OCB requirements.

[0161] The SSB transmission method on the unlicensed spectrum provided in the embodiments of the present application can be performed by an SSB transmission device on the unlicensed spectrum, or a processing unit in the SSB transmission device on the unlicensed spectrum for performing the SSB transmission method on the unlicensed spectrum. In the embodiments of the present application, the SSB transmission device on the unlicensed spectrum performing the SSB transmission method on the unlicensed spectrum is taken as an example to illustrate the SSB transmission device on the unlicensed spectrum provided in the embodiments of the present application.

[0162] FIG8 shows a schematic block diagram of an SSB transmission apparatus 300 on an unlicensed spectrum according to an embodiment of the present application.

[0163] As shown in FIG8 , the SSB transmission apparatus 300 on the unlicensed spectrum includes:

[0164] The transceiver unit 310 is configured to receive or detect a synchronization signal block SSB;

[0165] The SSB satisfies at least one of the following: frequency division multiplexing (FDM) with other SSBs, FDM between different parts of the SSB, uses interleaved resources, is located in a specific bandwidth, and is associated with a specific waveform;

[0166] The width of the specific bandwidth is less than or equal to a first threshold, and the bandwidth corresponding to the specific waveform on the unlicensed spectrum is greater than or equal to a second threshold.

[0167] In some embodiments, the SSB of the FDM satisfies at least one of the following:

[0168] Located in unlicensed spectrum;

[0169] Located on a synchronization grid, wherein at least two synchronization grids exist in one or each frequency domain unit of the preset frequency domain unit, and an SSB exists on each synchronization grid of the at least two synchronization grids;

[0170] The frequency domain span of at least two SSBs in one or each of the preset frequency domain units is greater than or equal to a third threshold;

[0171] The ratio of the frequency domain span of at least two SSBs in one or each of the preset frequency domain units to the frequency domain unit is greater than or equal to a fourth threshold;

[0172] There are two specific SSBs on one or each frequency domain unit in the preset frequency domain units, wherein one specific SSB is located at an upper edge of the frequency domain and the other specific SSB is located at a lower edge of the frequency domain;

[0173] There are two specific SSBs in one or each frequency domain unit in the preset frequency domain units, wherein one specific SSB is located at an upper edge of the frequency domain, and the other specific SSB is located at a lower edge of the frequency domain, and a frequency domain interval between the specific SSB located at the upper edge of the frequency domain and the specific SSB located at the lower edge of the frequency domain is greater than or equal to a fifth threshold;

[0174] There are two specific SSBs in one or each frequency domain unit in the preset frequency domain units, one specific SSB is located at the upper edge of the frequency domain, and the other specific SSB is located at the lower edge of the frequency domain, and the ratio of the frequency domain interval between the specific SSB located at the upper edge of the frequency domain and the specific SSB located at the lower edge of the frequency domain to the frequency domain unit is greater than or equal to a sixth threshold;

[0175] There is at least one first SSB, where the first SSB is used to indicate whether there is an SSB that is repeated in the frequency domain.

[0176] Whether an SSB has an SSB that repeats its frequency domain is associated with at least one of the following: bandwidth, subband, subcarrier spacing SCS, waveform;

[0177] There are at least two SSBs located in the same time unit, and the at least two SSBs are located in different synchronization grids;

[0178] At least two SSBs are located in the same time unit, and the at least two SSBs include a second SSB, the second SSB is located on a synchronization grid, and there is a frequency domain offset between other SSBs in the at least two SSBs and the second SSB;

[0179] There are at least two SSBs, wherein the at least two SSBs include a third SSB, and the third SSB is frequency-division multiplexed with a portion of a signal or channel in another SSB on a portion of time domain resources;

[0180] There are at least two SSBs, wherein the at least two SSBs include a fourth SSB, wherein the fourth SSB is frequency-division multiplexed with a portion of the signal or channel in one SSB on a portion of the time domain resources, and the fourth SSB is frequency-division multiplexed with a portion of the signal or channel in another SSB on another portion of the time domain resources.

[0181] In some embodiments, the first SSB is located on a synchronization grid.

[0182] In some embodiments, the second SSB is used to indicate system information required for cell access.

[0183] In some embodiments, one or each of the preset frequency domain units is an entire bandwidth, or one or each of the preset frequency domain units is a partial bandwidth in an entire bandwidth, or one or each of the preset frequency domain units is at least two discontinuous bandwidths.

[0184] In some embodiments, transmission of at least one of a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH) in an SSB using interleaved resources supports at least one of the following:

[0185] Interleaving structure based on physical resource block (PRB) group granularity, interleaving structure based on PRB granularity, interleaving structure based on sub-PRB granularity, interleaving structure based on subcarrier granularity, and interleaving structure based on specific frequency domain unit granularity.

[0186] In some embodiments, the interleaving structure supported by transmission of at least one of the PSS, SSS, and PBCH in the SSB using interleaved resources satisfies at least one of the following:

[0187] The intervals between two adjacent frequency domain units are the same;

[0188] The intervals between two adjacent frequency domain units are different;

[0189] At least one of the size of each frequency domain unit, the interval between two adjacent frequency domain units, and the total number of frequency domain units is agreed upon by the protocol or configured on the network side;

[0190] At least one of the size of each frequency domain unit, the interval between two adjacent frequency domain units, and the total number of frequency domain units is determined based on the capability reported by the terminal;

[0191] Different frequency domain units use different cyclic shift or phase rotation methods.

[0192] In some embodiments, the resources of SSBs using interleaved resources and their associated signals are multiplexed in different interleaving structures.

[0193] In some embodiments, the SSBs using interleaved resources and their associated signal resources are time-division multiplexed in different interleaving structures; or,

[0194] The SSB using interleaved resources and its associated signal resources are frequency-division multiplexed in different interleaving structures.

[0195] In some embodiments, the signal associated with the SSB using interleaved resources includes at least one of the following: a positioning reference signal PRS, a tracking reference signal TRS, a channel state information reference signal CSI-RS, and a downlink broadcast signal.

[0196] In some embodiments, the relationship between the SSB using the interleaved resources and the synchronization grid satisfies at least one of the following:

[0197] The center frequency of the frequency domain span of the SSB using interleaved resources is on the synchronization grid;

[0198] The starting or ending frequency point of the frequency domain span of the SSB using interleaved resources is on the synchronization grid;

[0199] The center frequency point of a specific frequency domain unit corresponding to the SSB using interleaved resources is on the synchronization grid;

[0200] The starting or ending frequency point of a specific frequency domain unit corresponding to the SSB using interleaved resources is on the synchronization grid.

[0201] In some embodiments, the SSB using interleaved resources is an SSB using interleaved resources defined by a cell.

[0202] In some embodiments, when determining the offset corresponding to the frequency domain resource grid, the reference frequency point is at least one of the following: the center frequency point of the frequency domain span of the SSB using interleaved resources, the starting or ending frequency point of the frequency domain span of the SSB using interleaved resources, the center frequency point of a specific frequency domain unit corresponding to the SSB using interleaved resources, and the starting or ending frequency point of a specific frequency domain unit corresponding to the SSB using interleaved resources; or

[0203] When determining the offset corresponding to the frequency domain resource grid, the reference frequency domain granularity unit is at least one of the following: the center frequency domain granularity unit of the frequency domain span of the SSB using interleaved resources, the starting or ending frequency domain granularity unit of the frequency domain span of the SSB using interleaved resources, the center frequency domain granularity unit of the specific frequency domain unit corresponding to the SSB using interleaved resources, and the starting or ending frequency domain granularity unit of the specific frequency domain unit corresponding to the SSB using interleaved resources.

[0204] In some embodiments, when determining the offset of the control resource set associated with the scheduling system information indicated by the downlink control channel of the scheduling system information, the reference frequency is at least one of the following: the center frequency of the frequency domain span of the SSB using interleaved resources, the starting or ending frequency of the frequency domain span of the SSB using interleaved resources, the center frequency of a specific frequency domain unit corresponding to the SSB using interleaved resources, and the starting or ending frequency of a specific frequency domain unit corresponding to the SSB using interleaved resources; or

[0205] When determining the offset of the control resource set associated with the scheduling system information indicated by the downlink control channel of the scheduling system information, the reference frequency domain granularity unit is at least one of the following: the center frequency domain granularity unit of the frequency domain span of the SSB using interleaved resources, the starting or ending frequency domain granularity unit of the frequency domain span of the SSB using interleaved resources, the center frequency domain granularity unit of the specific frequency domain unit corresponding to the SSB using interleaved resources, and the starting or ending frequency domain granularity unit of the specific frequency domain unit corresponding to the SSB using interleaved resources.

[0206] In some embodiments, the transceiver unit 310 may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip.

[0207] It should be understood that the SSB transmission device 300 on the unlicensed spectrum according to the embodiment of the present application may correspond to the terminal in the method embodiment of the present application, and the various units in the SSB transmission device 300 on the unlicensed spectrum are respectively for implementing the corresponding processes of the terminal in the method 200 shown in Figure 3. For the sake of brevity, they will not be repeated here.

[0208] Therefore, in an embodiment of the present application, the SSB satisfies at least one of the following: FDM between other SSBs, FDM between different parts of the SSB, use of interleaved resources, being located in a specific bandwidth, and being associated with a specific waveform, thereby increasing the spectrum bandwidth occupied by the SSB to meet the OCB requirements and reducing the transmission delay of the SSB. At the same time, the embodiment of the present application can support network energy-saving transmission, thereby reducing network energy consumption. For example, by designing an FDM SSB (FDMed SSB), the spectrum bandwidth occupied by the SSB can be increased, thereby meeting the OCB requirements and reducing the transmission delay of the SSB. For another example, by designing an interleaved structure (interlace) supported by the transmission of at least one of the PSS, SSS, and PBCH in the SSB, the spectrum bandwidth occupied by the SSB can be increased, thereby meeting the OCB requirements. For another example, the width of the specific bandwidth is less than or equal to the first threshold. By designing the specific bandwidth, the spectrum bandwidth occupied by the SSB can be increased, thereby meeting the OCB requirements. For another example, the bandwidth corresponding to the specific waveform in the unlicensed spectrum is greater than or equal to the second threshold. By designing the specific waveform, the spectrum bandwidth occupied by SSB can be increased, thereby meeting the OCB requirements.

[0209] FIG9 shows a schematic block diagram of an SSB transmission apparatus 400 on an unlicensed spectrum according to an embodiment of the present application.

[0210] As shown in FIG9 , the SSB transmission apparatus 400 on the unlicensed spectrum includes:

[0211] The transceiver unit 410 is configured to send a synchronization signal block SSB;

[0212] The SSB satisfies at least one of the following: frequency division multiplexing (FDM) with other SSBs, FDM between different parts of the SSB, uses interleaved resources, is located in a specific bandwidth, and is associated with a specific waveform;

[0213] The width of the specific bandwidth is less than or equal to a first threshold, and the bandwidth corresponding to the specific waveform on the unlicensed spectrum is greater than or equal to a second threshold.

[0214] In some embodiments, the SSB of the FDM satisfies at least one of the following:

[0215] Located in unlicensed spectrum;

[0216] Located on a synchronization grid, wherein at least two synchronization grids exist in one or each frequency domain unit of the preset frequency domain unit, and an SSB exists on each synchronization grid of the at least two synchronization grids;

[0217] The frequency domain span of at least two SSBs in one or each of the preset frequency domain units is greater than or equal to a third threshold;

[0218] The ratio of the frequency domain span of at least two SSBs in one or each of the preset frequency domain units to the frequency domain unit is greater than or equal to a fourth threshold;

[0219] There are two specific SSBs on one or each frequency domain unit in the preset frequency domain units, wherein one specific SSB is located at an upper edge of the frequency domain and the other specific SSB is located at a lower edge of the frequency domain;

[0220] There are two specific SSBs in one or each frequency domain unit in the preset frequency domain units, wherein one specific SSB is located at an upper edge of the frequency domain, and the other specific SSB is located at a lower edge of the frequency domain, and a frequency domain interval between the specific SSB located at the upper edge of the frequency domain and the specific SSB located at the lower edge of the frequency domain is greater than or equal to a fifth threshold;

[0221] There are two specific SSBs in one or each frequency domain unit in the preset frequency domain units, one specific SSB is located at the upper edge of the frequency domain, and the other specific SSB is located at the lower edge of the frequency domain, and the ratio of the frequency domain interval between the specific SSB located at the upper edge of the frequency domain and the specific SSB located at the lower edge of the frequency domain to the frequency domain unit is greater than or equal to a sixth threshold;

[0222] There is at least one first SSB, where the first SSB is used to indicate whether there is an SSB that is repeated in the frequency domain.

[0223] Whether an SSB has an SSB that repeats its frequency domain is associated with at least one of the following: bandwidth, subband, subcarrier spacing SCS, waveform;

[0224] There are at least two SSBs located in the same time unit, and the at least two SSBs are located in different synchronization grids;

[0225] At least two SSBs are located in the same time unit, and the at least two SSBs include a second SSB, the second SSB is located on a synchronization grid, and there is a frequency domain offset between other SSBs in the at least two SSBs and the second SSB;

[0226] There are at least two SSBs, wherein the at least two SSBs include a third SSB, and the third SSB is frequency-division multiplexed with a portion of a signal or channel in another SSB on a portion of time domain resources;

[0227] There are at least two SSBs, wherein the at least two SSBs include a fourth SSB, wherein the fourth SSB is frequency-division multiplexed with a portion of the signal or channel in one SSB on a portion of the time domain resources, and the fourth SSB is frequency-division multiplexed with a portion of the signal or channel in another SSB on another portion of the time domain resources.

[0228] In some embodiments, the first SSB is located on a synchronization grid.

[0229] In some embodiments, the second SSB is used to indicate system information required for cell access.

[0230] In some embodiments, one or each of the preset frequency domain units is an entire bandwidth, or one or each of the preset frequency domain units is a partial bandwidth in an entire bandwidth, or one or each of the preset frequency domain units is at least two discontinuous bandwidths.

[0231] In some embodiments, transmission of at least one of a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH) in an SSB using interleaved resources supports at least one of the following:

[0232] Interleaving structure based on physical resource block (PRB) group granularity, interleaving structure based on PRB granularity, interleaving structure based on sub-PRB granularity, interleaving structure based on subcarrier granularity, and interleaving structure based on specific frequency domain unit granularity.

[0233] In some embodiments, the interleaving structure supported by transmission of at least one of the PSS, SSS, and PBCH in the SSB using interleaved resources satisfies at least one of the following:

[0234] The intervals between two adjacent frequency domain units are the same;

[0235] The intervals between two adjacent frequency domain units are different;

[0236] At least one of the size of each frequency domain unit, the interval between two adjacent frequency domain units, and the total number of frequency domain units is agreed upon by the protocol or configured on the network side;

[0237] At least one of the size of each frequency domain unit, the interval between two adjacent frequency domain units, and the total number of frequency domain units is determined based on the capability reported by the terminal;

[0238] Different frequency domain units use different cyclic shift or phase rotation methods.

[0239] In some embodiments, the resources of SSBs using interleaved resources and their associated signals are multiplexed in different interleaving structures.

[0240] In some embodiments, the SSBs using interleaved resources and their associated signal resources are time-division multiplexed in different interleaving structures; or,

[0241] The SSB using interleaved resources and its associated signal resources are frequency-division multiplexed in different interleaving structures.

[0242] In some embodiments, the signal associated with the SSB using interleaved resources includes at least one of the following: a positioning reference signal PRS, a tracking reference signal TRS, a channel state information reference signal CSI-RS, and a downlink broadcast signal.

[0243] In some embodiments, the relationship between the SSB using the interleaved resources and the synchronization grid satisfies at least one of the following:

[0244] The center frequency of the frequency domain span of the SSB using interleaved resources is on the synchronization grid;

[0245] The starting or ending frequency point of the frequency domain span of the SSB using interleaved resources is on the synchronization grid;

[0246] The center frequency point of a specific frequency domain unit corresponding to the SSB using interleaved resources is on the synchronization grid;

[0247] The starting or ending frequency point of a specific frequency domain unit corresponding to the SSB using interleaved resources is on the synchronization grid.

[0248] In some embodiments, the SSB using interleaved resources is an SSB using interleaved resources defined by a cell.

[0249] In some embodiments, when determining the offset corresponding to the frequency domain resource grid, the reference frequency point is at least one of the following: the center frequency point of the frequency domain span of the SSB using interleaved resources, the starting or ending frequency point of the frequency domain span of the SSB using interleaved resources, the center frequency point of a specific frequency domain unit corresponding to the SSB using interleaved resources, and the starting or ending frequency point of a specific frequency domain unit corresponding to the SSB using interleaved resources; or

[0250] When determining the offset corresponding to the frequency domain resource grid, the reference frequency domain granularity unit is at least one of the following: the center frequency domain granularity unit of the frequency domain span of the SSB using interleaved resources, the starting or ending frequency domain granularity unit of the frequency domain span of the SSB using interleaved resources, the center frequency domain granularity unit of the specific frequency domain unit corresponding to the SSB using interleaved resources, and the starting or ending frequency domain granularity unit of the specific frequency domain unit corresponding to the SSB using interleaved resources.

[0251] In some embodiments, when determining the offset of the control resource set associated with the scheduling system information indicated by the downlink control channel of the scheduling system information, the reference frequency is at least one of the following: the center frequency of the frequency domain span of the SSB using interleaved resources, the starting or ending frequency of the frequency domain span of the SSB using interleaved resources, the center frequency of a specific frequency domain unit corresponding to the SSB using interleaved resources, and the starting or ending frequency of a specific frequency domain unit corresponding to the SSB using interleaved resources; or

[0252] When determining the offset of the control resource set associated with the scheduling system information indicated by the downlink control channel of the scheduling system information, the reference frequency domain granularity unit is at least one of the following: the center frequency domain granularity unit of the frequency domain span of the SSB using interleaved resources, the starting or ending frequency domain granularity unit of the frequency domain span of the SSB using interleaved resources, the center frequency domain granularity unit of the specific frequency domain unit corresponding to the SSB using interleaved resources, and the starting or ending frequency domain granularity unit of the specific frequency domain unit corresponding to the SSB using interleaved resources.

[0253] In some embodiments, the transceiver unit 410 may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip.

[0254] It should be understood that the SSB transmission device 400 on the unlicensed spectrum according to the embodiment of the present application may correspond to the network side device in the method embodiment of the present application, and the various units in the SSB transmission device 400 on the unlicensed spectrum are respectively for implementing the corresponding processes of the network side device in the method 200 shown in Figure 3. For the sake of brevity, they will not be repeated here.

[0255] Therefore, in an embodiment of the present application, the SSB satisfies at least one of the following: FDM between other SSBs, FDM between different parts of the SSB, use of interleaved resources, being located in a specific bandwidth, and being associated with a specific waveform, thereby increasing the spectrum bandwidth occupied by the SSB to meet the OCB requirements and reducing the transmission delay of the SSB. At the same time, the embodiment of the present application can support network energy-saving transmission, thereby reducing network energy consumption. For example, by designing an FDM SSB (FDMed SSB), the spectrum bandwidth occupied by the SSB can be increased, thereby meeting the OCB requirements and reducing the transmission delay of the SSB. For another example, by designing an interleaved structure (interlace) supported by the transmission of at least one of the PSS, SSS, and PBCH in the SSB, the spectrum bandwidth occupied by the SSB can be increased, thereby meeting the OCB requirements. For another example, the width of the specific bandwidth is less than or equal to the first threshold. By designing the specific bandwidth, the spectrum bandwidth occupied by the SSB can be increased, thereby meeting the OCB requirements. For another example, the bandwidth corresponding to the specific waveform in the unlicensed spectrum is greater than or equal to the second threshold. By designing the specific waveform, the spectrum bandwidth occupied by SSB can be increased, thereby meeting the OCB requirements.

[0256] The SSB transmission device on the unlicensed spectrum in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or chip. The electronic device can be a terminal or a network-side device, or can be a device other than a terminal or a network-side device. For example, the terminal can include but is not limited to the types of the terminal 11 listed above, the network-side device can include but is not limited to the types of the network-side device 12 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0257] The SSB transmission device on the unlicensed spectrum provided in the embodiment of the present application can implement the various processes implemented in the method embodiment of Figure 3 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0258] As shown in FIG10 , an embodiment of the present application further provides a communication device 500 , including a processor 501 and a memory 502 , where the memory 502 stores programs or instructions that can be run on the processor 501 .

[0259] For example, when the communication device 500 is a terminal, the program or instruction is executed by the processor 501 to implement the various steps performed by the terminal in the above-mentioned embodiment of the SSB transmission method on the unlicensed spectrum, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0260] For another example, when the communication device 500 is a network-side device, the program or instruction is executed by the processor 501 to implement the various steps performed by the network-side device in the above-mentioned SSB transmission method embodiment on the unlicensed spectrum, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0261] The present application also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps performed by the terminal in the method embodiment shown in FIG3 . This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect. Specifically, FIG11 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0262] The terminal 600 includes but is not limited to: a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609 and at least some of the components of the processor 610.

[0263] Those skilled in the art will appreciate that the terminal 600 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 610 via a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in FIG11 does not constitute a limitation of the terminal. The terminal may include more or fewer components than shown, or may combine certain components, or have different component arrangements, which will not be described in detail here.

[0264] It should be understood that in an embodiment of the present application, the input unit 604 may include a graphics processing unit (GPU) 6041 and a microphone 6042, and the graphics processor 6041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 606 may include a display panel 6061, and the display panel 6061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 607 includes a touch panel 6071 and at least one of other input devices 6072. The touch panel 6071 is also called a touch screen. The touch panel 6071 may include two parts: a touch detection device and a touch controller. Other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0265] In the embodiment of the present application, after receiving downlink data from a network-side device, the radio frequency unit 601 may transmit the data to the processor 610 for processing. Furthermore, the radio frequency unit 601 may send uplink data to the network-side device. Typically, the radio frequency unit 601 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0266] The memory 609 can be used to store software programs or instructions and various data. The memory 609 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 609 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may 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 may be a random access memory (RAM), 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 (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct memory bus random access memory (DRRAM). The memory 609 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0267] Processor 610 may include at least one processing unit. Optionally, processor 610 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes SSB transmission signals on unlicensed spectrum, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 610.

[0268] The radio frequency unit 601 is used to detect or receive SSB;

[0269] The SSB satisfies at least one of the following: frequency division multiplexing (FDM) with other SSBs, FDM between different parts of the SSB, uses interleaved resources, is located in a specific bandwidth, and is associated with a specific waveform;

[0270] The width of the specific bandwidth is less than or equal to a first threshold, and the bandwidth corresponding to the specific waveform on the unlicensed spectrum is greater than or equal to a second threshold.

[0271] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be described here.

[0272] The present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps performed by the network-side device in the method embodiment shown in FIG3 . This network-side device embodiment corresponds to the aforementioned network-side device method embodiment, and each implementation process and implementation method of the aforementioned method embodiment is applicable to this network-side device embodiment and can achieve the same technical effects. For the sake of brevity, they are not further described here.

[0273] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 12, the network-side device 700 includes an antenna 71, a radio frequency device 72, a baseband device 73, a processor 74, and a memory 75. Antenna 71 is connected to radio frequency device 72. In the uplink direction, radio frequency device 72 receives information via antenna 71 and sends the received information to baseband device 73 for processing. In the downlink direction, baseband device 73 processes the information to be transmitted and sends it to radio frequency device 72. Radio frequency device 72 processes the received information and then sends it through antenna 71.

[0274] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 73 , which includes a baseband processor.

[0275] The baseband device 73 may include, for example, at least one baseband board, on which at least two chips are provided, as shown in FIG12 , one of the chips being, for example, a baseband processor, which is connected to the memory 75 via a bus interface to call the program in the memory 75 and execute the network device operations shown in the above method embodiment.

[0276] The network side device may further include a network interface 76, which is, for example, a Common Public Radio Interface (CPRI).

[0277] Specifically, the network side device 700 of the embodiment of the present application also includes: instructions or programs stored in the memory 75 and can be run on the processor 74. The processor 74 calls the instructions or programs in the memory 75 to execute the method executed by each unit shown in Figure 9 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0278] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned SSB transmission method embodiment on the unlicensed spectrum are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0279] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0280] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned SSB transmission method embodiment on the unlicensed spectrum, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0281] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0282] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned SSB transmission method embodiment on the unlicensed spectrum, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0283] An embodiment of the present application also provides a communication system, including: a terminal and a network-side device, wherein the terminal can be used to execute the steps performed by the terminal in the SSB transmission method on the unlicensed spectrum as described above, and the network-side device can be used to execute the steps performed by the network-side device in the SSB transmission method on the unlicensed spectrum as described above.

[0284] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0285] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0286] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. An SSB transmission method on unlicensed spectrum, comprising: The terminal receives or detects a Synchronization Signal Block (SSB); Wherein, the SSB satisfies at least one of the following: frequency division multiplexing (FDM) with other SSBs, FDM between different parts of the SSB, using interleaved resources, located in a specific bandwidth, associated with a specific waveform; Wherein, the width of the specific bandwidth is less than or equal to a first threshold, and the bandwidth corresponding to the specific waveform on the unlicensed spectrum is greater than or equal to a second threshold.

2. The method according to claim 1, Among them, The SSB with FDM satisfies at least one of the following: Located on the unlicensed spectrum; Located on a synchronization grid, wherein there are at least two synchronization grids in one or each of the preset frequency domain units, and there is one SSB on each of the at least two synchronization grids; The frequency domain span of at least two SSBs on one or each of the preset frequency domain units is greater than or equal to a third threshold; The proportion of the frequency domain span of at least two SSBs on one or each of the preset frequency domain units in the frequency domain unit where they are located is greater than or equal to a fourth threshold; There are two specific SSBs on one or each of the preset frequency domain units, wherein one specific SSB is located at the upper edge of the frequency domain, and the other specific SSB is located at the lower edge of the frequency domain; There are two specific SSBs on one or each of the preset frequency domain units, wherein one specific SSB is located at the upper edge of the frequency domain, and the other specific SSB is located at the lower edge of the frequency domain, and the frequency domain interval between the specific SSB located at the upper edge of the frequency domain and the specific SSB located at the lower edge of the frequency domain is greater than or equal to a fifth threshold; There are two specific SSBs on one or each of the preset frequency domain units, one specific SSB is located at the upper edge of the frequency domain, and the other specific SSB is located at the lower edge of the frequency domain, and the proportion of the frequency domain interval between the specific SSB located at the upper edge of the frequency domain and the specific SSB located at the lower edge of the frequency domain in the frequency domain unit where they are located is greater than or equal to a sixth threshold; There is at least one first SSB, wherein the first SSB is used to indicate whether there is an SSB with frequency domain repetition with it; Whether an SSB has an SSB with frequency domain repetition with it is associated with at least one of the following: bandwidth, sub-band, Subcarrier Spacing (SCS), waveform; There are at least two SSBs located in the same time unit, and the at least two SSBs are respectively in different synchronization grids; There are at least two SSBs located in the same time unit, and the at least two SSBs include a second SSB, the second SSB is located on the synchronization grid, and there is a frequency domain offset between the other SSBs in the at least two SSBs and the second SSB; There are at least two SSBs, wherein the at least two SSBs include a third SSB, and the third SSB is frequency division multiplexed with part of the signals or channels in another SSB on part of the time domain resources; There are at least two SSBs, where the at least two SSBs include a fourth SSB, and the fourth SSB is frequency-division multiplexed with a part of signals or channels in one SSB on a part of time-domain resources, and the fourth SSB is frequency-division multiplexed with a part of signals or channels in another SSB on another part of time-domain resources.

3. The method according to claim 2, Among them, The first SSB is located on the synchronization grid.

4. The method according to claim 2, Among them, The second SSB is used to indicate the system information required for cell access.

5. The method according to claim 2, Among them, One or each of the preset frequency-domain units is an entire bandwidth, or one or each of the preset frequency-domain units is a partial bandwidth of an entire bandwidth, or one or each of the preset frequency-domain units is at least two discontinuous bandwidths.

6. The method according to claim 1, Among them, The transmission of at least one of the primary synchronization signal PSS, the secondary synchronization signal SSS, and the physical broadcast channel PBCH in the SSB using the interleaved resources supports at least one of the following: An interleaving structure based on the physical resource block PRB group granularity, an interleaving structure based on the PRB granularity, an interleaving structure based on the sub-PRB granularity, an interleaving structure based on the subcarrier granularity, an interleaving structure based on the specific frequency-domain unit granularity.

7. The method according to claim 1 or 6, Among them, The interleaving structure supported by the transmission of at least one of PSS, SSS, and PBCH in the SSB using the interleaved resources satisfies at least one of the following: The interval between two adjacent frequency-domain units is the same; The interval between two adjacent frequency-domain units is different; At least one of the size of each frequency-domain unit, the interval between two adjacent frequency-domain units, and the total number of frequency-domain units is agreed by the protocol or configured by the network side; At least one of the size of each frequency-domain unit, the interval between two adjacent frequency-domain units, and the total number of frequency-domain units is determined based on the capabilities reported by the terminal; Different cyclic shift or phase rotation methods are used between different frequency-domain units.

8. The method according to claim 6 or 7, Among them, The resource multiplexing of the SSB using the interleaved resources and its associated signals is in different interleaving structures.

9. The method according to claim 8, Among them, The resource time-division multiplexing of the SSB using the interleaved resources and its associated signals is in different interleaving structures; or the resource frequency-division multiplexing of the SSB using the interleaved resources and its associated signals is in different interleaving structures.

10. The method according to claim 8 or 9, Among them, The signals associated with the SSB using the interleaved resources include at least one of the following: positioning reference signal PRS, tracking reference signal TRS, channel state information reference signal CSI-RS, downlink broadcast signal.

11. The method according to any one of claims 1, 6 to 10, Among them, The relationship between the SSB using the interleaved resources and the synchronization grid satisfies at least one of the following: The center frequency point of the frequency-domain span of the SSB using the interleaved resources is on the synchronization grid; The start or end frequency point of the frequency-domain span of the SSB using the interleaved resources is on the synchronization grid; The central frequency point of a specific frequency-domain unit corresponding to an SSB using interleaved resources is on the synchronization grid; The starting or ending frequency point of a specific frequency-domain unit corresponding to an SSB using interleaved resources is on the synchronization grid.

12. The method according to claim 11, Among them, The SSB using interleaved resources is the SSB using interleaved resources defined for the cell.

13. The method according to any one of claims 1, 6 to 12, Among them, When determining the offset corresponding to the frequency-domain resource grid, the reference frequency point is at least one of the following: the central frequency point of the frequency-domain span of the SSB using interleaved resources, the starting or ending frequency point of the frequency-domain span of the SSB using interleaved resources, the central frequency point of a specific frequency-domain unit corresponding to the SSB using interleaved resources, the starting or ending frequency point of a specific frequency-domain unit corresponding to the SSB using interleaved resources; or, When determining the offset corresponding to the frequency-domain resource grid, the reference frequency-domain granularity unit is at least one of the following: the central frequency-domain granularity unit of the frequency-domain span of the SSB using interleaved resources, the starting or ending frequency-domain granularity unit of the frequency-domain span of the SSB using interleaved resources, the central frequency-domain granularity unit of a specific frequency-domain unit corresponding to the SSB using interleaved resources, the starting or ending frequency-domain granularity unit of a specific frequency-domain unit corresponding to the SSB using interleaved resources.

14. The method according to any one of claims 1, 6 to 13, wherein, When determining the offset of the control resource set associated with the scheduling system information indicated by the downlink control channel for scheduling the system information, the reference frequency point is at least one of the following: the central frequency point of the frequency-domain span of the SSB using interleaved resources, the starting or ending frequency point of the frequency-domain span of the SSB using interleaved resources, the central frequency point of a specific frequency-domain unit corresponding to the SSB using interleaved resources, the starting or ending frequency point of a specific frequency-domain unit corresponding to the SSB using interleaved resources; or, When determining the offset of the control resource set associated with the scheduling system information indicated by the downlink control channel for scheduling the system information, the reference frequency-domain granularity unit is at least one of the following: the central frequency-domain granularity unit of the frequency-domain span of the SSB using interleaved resources, the starting or ending frequency-domain granularity unit of the frequency-domain span of the SSB using interleaved resources, the central frequency-domain granularity unit of a specific frequency-domain unit corresponding to the SSB using interleaved resources, the starting or ending frequency-domain granularity unit of a specific frequency-domain unit corresponding to the SSB using interleaved resources.

15. An SSB transmission method on unlicensed spectrum, comprising: The network-side device sends a synchronization signal block SSB; Wherein, the SSB satisfies at least one of the following: frequency division multiplexing (FDM) with other SSBs, FDM between different parts of the SSB, using interleaved resources, being in a specific bandwidth, being associated with a specific waveform; Wherein, the width of the specific bandwidth is less than or equal to a first threshold, and the bandwidth corresponding to the specific waveform on the unlicensed spectrum is greater than or equal to a second threshold.

16. The method according to claim 15, Among them, The SSBs with FDM satisfy at least one of the following: Being in the unlicensed spectrum; Located on the synchronization grid, where there are at least two synchronization grids in one or each of the preset frequency domain units, and there is one SSB on each of the at least two synchronization grids; The frequency domain span of at least two SSBs on one or each of the preset frequency domain units is greater than or equal to a third threshold; The proportion of the frequency domain span of at least two SSBs on one or each of the preset frequency domain units in the frequency domain unit where they are located is greater than or equal to a fourth threshold; There are two specific SSBs on one or each of the preset frequency domain units, where one specific SSB is located at the upper edge of the frequency domain, and the other specific SSB is located at the lower edge of the frequency domain; There are two specific SSBs on one or each of the preset frequency domain units, where one specific SSB is located at the upper edge of the frequency domain, and the other specific SSB is located at the lower edge of the frequency domain, and the frequency domain interval between the specific SSB located at the upper edge of the frequency domain and the specific SSB located at the lower edge of the frequency domain is greater than or equal to a fifth threshold; There are two specific SSBs on one or each of the preset frequency domain units, one specific SSB is located at the upper edge of the frequency domain, and the other specific SSB is located at the lower edge of the frequency domain, and the proportion of the frequency domain interval between the specific SSB located at the upper edge of the frequency domain and the specific SSB located at the lower edge of the frequency domain in the frequency domain unit where they are located is greater than or equal to a sixth threshold; There is at least one first SSB, where the first SSB is used to indicate whether there is an SSB with the same frequency domain as it; Whether an SSB has an SSB with the same frequency domain as it is associated with at least one of the following: bandwidth, subband, subcarrier spacing SCS, waveform; There are at least two SSBs located in the same time unit, and the at least two SSBs are respectively on different synchronization grids; There are at least two SSBs located in the same time unit, and the at least two SSBs include a second SSB, the second SSB is located on the synchronization grid, and there is a frequency domain offset between the second SSB and the other SSBs among the at least two SSBs; There are at least two SSBs, where the at least two SSBs include a third SSB, and the third SSB is frequency division multiplexed with a part of the signal or channel in another SSB on part of the time domain resources; There are at least two SSBs, where the at least two SSBs include a fourth SSB, the fourth SSB is frequency division multiplexed with a part of the signal or channel in one SSB on a part of the time domain resources, and the fourth SSB is frequency division multiplexed with a part of the signal or channel in another SSB on another part of the time domain resources.

17. According to the method described in claim 16, Among them, The first SSB is located on the synchronization grid.

18. According to the method described in claim 16, Among them, The second SSB is used to indicate the system information required for cell access.

19. According to the method described in claim 16, Among them, One or each of the preset frequency-domain units is an entire bandwidth, or one or each of the preset frequency-domain units is a partial bandwidth within an entire bandwidth, or one or each of the preset frequency-domain units is at least two discontinuous bandwidths.

20. The method according to claim 15, Among them, The transmission of at least one of the primary synchronization signal PSS, the secondary synchronization signal SSS, and the physical broadcast channel PBCH in the SSB using the interleaved resource supports at least one of the following: An interleaved structure based on the physical resource block PRB group granularity, an interleaved structure based on the PRB granularity, an interleaved structure based on the sub-PRB granularity, an interleaved structure based on the sub-carrier granularity, an interleaved structure based on the specific frequency-domain unit granularity.

21. The method according to claim 15 or 20, Among them, The interleaved structure supported by the transmission of at least one of PSS, SSS, and PBCH in the SSB using the interleaved resource satisfies at least one of the following: The interval between two adjacent frequency-domain units is the same; The interval between two adjacent frequency-domain units is different; At least one of the size of each frequency-domain unit, the interval between two adjacent frequency-domain units, and the total number of frequency-domain units is agreed by the protocol or configured by the network side; At least one of the size of each frequency-domain unit, the interval between two adjacent frequency-domain units, and the total number of frequency-domain units is determined based on the capabilities reported by the terminal; Different cyclic shifts or phase rotation methods are used between different frequency-domain units.

22. The method according to claim 20 or 21, Among them, The resource multiplexing of the SSB using the interleaved resource and its associated signal is in different interleaved structures.

23. The method according to claim 22, Among them, The resource time-division multiplexing of the SSB using the interleaved resource and its associated signal is in different interleaved structures; or the resource frequency-division multiplexing of the SSB using the interleaved resource and its associated signal is in different interleaved structures.

24. The method according to claim 22 or 23, Among them, The signal associated with the SSB using the interleaved resource includes at least one of the following: positioning reference signal PRS, tracking reference signal TRS, channel state information reference signal CSI-RS, downlink broadcast signal.

25. The method according to any one of claims 15, 20 to 24, Among them, The relationship between the SSB using the interleaved resource and the synchronization grid satisfies at least one of the following: The center frequency point of the frequency-domain span of the SSB using the interleaved resource is on the synchronization grid; The starting or ending frequency point of the frequency-domain span of the SSB using the interleaved resource is on the synchronization grid; The center frequency point of the specific frequency-domain unit corresponding to the SSB using the interleaved resource is on the synchronization grid; The starting or ending frequency point of the specific frequency-domain unit corresponding to the SSB using the interleaved resource is on the synchronization grid.

26. The method according to claim 25, Among them, The SSB using the interleaved resource is the SSB defined for the cell using the interleaved resource.

27. The method according to any one of claims 15, 20 to 26, wherein, When determining the offset corresponding to the frequency-domain resource grid, the reference frequency point is at least one of the following: the central frequency point of the frequency-domain span of the SSB using the interleaved resource, the start or end frequency point of the frequency-domain span of the SSB using the interleaved resource, the central frequency point of a specific frequency-domain unit corresponding to the SSB using the interleaved resource, the start or end frequency point of a specific frequency-domain unit corresponding to the SSB using the interleaved resource; or, When determining the offset corresponding to the frequency-domain resource grid, the reference frequency-domain granularity unit is at least one of the following: the central frequency-domain granularity unit of the frequency-domain span of the SSB using the interleaved resource, the start or end frequency-domain granularity unit of the frequency-domain span of the SSB using the interleaved resource, the central frequency-domain granularity unit of a specific frequency-domain unit corresponding to the SSB using the interleaved resource, the start or end frequency-domain granularity unit of a specific frequency-domain unit corresponding to the SSB using the interleaved resource.

28. The method according to any one of claims 15, 20 to 27, wherein, When determining the offset of the control resource set associated with the scheduling system information indicated by the downlink control channel of the scheduling system information, the reference frequency point is at least one of the following: the central frequency point of the frequency-domain span of the SSB using the interleaved resource, the start or end frequency point of the frequency-domain span of the SSB using the interleaved resource, the central frequency point of a specific frequency-domain unit corresponding to the SSB using the interleaved resource, the start or end frequency point of a specific frequency-domain unit corresponding to the SSB using the interleaved resource; or, When determining the offset of the control resource set associated with the scheduling system information indicated by the downlink control channel of the scheduling system information, the reference frequency-domain granularity unit is at least one of the following: the central frequency-domain granularity unit of the frequency-domain span of the SSB using the interleaved resource, the start or end frequency-domain granularity unit of the frequency-domain span of the SSB using the interleaved resource, the central frequency-domain granularity unit of a specific frequency-domain unit corresponding to the SSB using the interleaved resource, the start or end frequency-domain granularity unit of a specific frequency-domain unit corresponding to the SSB using the interleaved resource.

29. An SSB transmission device on unlicensed spectrum, comprising: a transceiver unit for receiving or detecting a synchronization signal block SSB; wherein, the SSB satisfies at least one of the following: frequency-division multiplexing FDM with other SSBs, FDM between different parts of the SSB, using interleaved resources, located in a specific bandwidth, associated with a specific waveform; wherein, the width of the specific bandwidth is less than or equal to a first threshold, and the bandwidth corresponding to the specific waveform on the unlicensed spectrum is greater than or equal to a second threshold.

30. The device according to claim 29, Among them, The SSB with FDM satisfies at least one of the following: Located on unlicensed spectrum; Located on a synchronization grid, wherein there are at least two synchronization grids in one or each of the preset frequency-domain units, and there is one SSB on each of the at least two synchronization grids; The frequency-domain span of at least two SSBs on one or each of the preset frequency-domain units is greater than or equal to a third threshold; The proportion of the frequency-domain span of at least two SSBs on one or each of the preset frequency-domain units in the frequency-domain unit where they are located is greater than or equal to a fourth threshold; There are two specific SSBs on one or each of the preset frequency-domain units, where one specific SSB is located at the upper edge of the frequency domain, and the other specific SSB is located at the lower edge of the frequency domain; There are two specific SSBs on one or each of the preset frequency-domain units, where one specific SSB is located at the upper edge of the frequency domain, and the other specific SSB is located at the lower edge of the frequency domain, and the frequency-domain interval between the specific SSB located at the upper edge of the frequency domain and the specific SSB located at the lower edge of the frequency domain is greater than or equal to the fifth threshold; There are two specific SSBs on one or each of the preset frequency-domain units, one specific SSB is located at the upper edge of the frequency domain, and the other specific SSB is located at the lower edge of the frequency domain, and the proportion of the frequency-domain interval between the specific SSB located at the upper edge of the frequency domain and the specific SSB located at the lower edge of the frequency domain in the frequency-domain unit where they are located is greater than or equal to the sixth threshold; There is at least one first SSB, where the first SSB is used to indicate whether there is an SSB with frequency repetition with it; Whether an SSB has an SSB with frequency repetition with it is associated with at least one of the following: bandwidth, subband, subcarrier spacing SCS, waveform; There are at least two SSBs located in the same time unit, and the at least two SSBs are respectively in different synchronization grids; There are at least two SSBs located in the same time unit, and the at least two SSBs include a second SSB, the second SSB is located on the synchronization grid, and there is a frequency-domain offset between the second SSB and other SSBs among the at least two SSBs; There are at least two SSBs, where the at least two SSBs include a third SSB, and the third SSB is frequency-division multiplexed with part of the signals or channels in another SSB on part of the time-domain resources; There are at least two SSBs, where the at least two SSBs include a fourth SSB, the fourth SSB is frequency-division multiplexed with part of the signals or channels in one SSB on a part of the time-domain resources, and the fourth SSB is frequency-division multiplexed with part of the signals or channels in another SSB on another part of the time-domain resources.

31. The device according to claim 29, Among them, The transmission of at least one of the primary synchronization signal PSS, the secondary synchronization signal SSS, and the physical broadcast channel PBCH in the SSB using the interleaved resources supports at least one of the following: An interleaved structure based on the physical resource block PRB group granularity, an interleaved structure based on the PRB granularity, an interleaved structure based on the sub-PRB granularity, an interleaved structure based on the subcarrier granularity, an interleaved structure based on the specific frequency-domain unit granularity.

32. The device according to claim 29 or 31, Among them, The interleaved structure supported by the transmission of at least one of PSS, SSS, and PBCH in the SSB using the interleaved resources satisfies at least one of the following: The interval between two adjacent frequency-domain units is the same; The interval between two adjacent frequency-domain units is different; At least one of the size of each frequency-domain unit, the interval between two adjacent frequency-domain units, and the total number of frequency-domain units is agreed by the protocol or configured by the network side; The size of each frequency-domain unit, the interval between two adjacent frequency-domain units, and at least one of the total number of frequency-domain units are determined based on the capabilities reported by the terminal; Different cyclic shifts or phase rotation methods are used between different frequency-domain units.

33. The apparatus according to claim 31 or 32, Among them, The resource multiplexing of the SSB using the interleaved resource and its associated signal is in different interleaved structures.

34. An SSB transmission apparatus on unlicensed spectrum, comprising: A transceiver unit for transmitting a synchronization signal block SSB; Wherein, the SSB satisfies at least one of the following: an SSB frequency-division multiplexed (FDM) with other SSBs, FDM between different parts of the SSB, using interleaved resources, located in a specific bandwidth, associated with a specific waveform; Wherein, the width of the specific bandwidth is less than or equal to a first threshold, and the bandwidth corresponding to the specific waveform on the unlicensed spectrum is greater than or equal to a second threshold.

35. The apparatus according to claim 34, Among them, The SSB of FDM satisfies at least one of the following: Located in the unlicensed spectrum; Located on a synchronization grid, wherein there are at least two synchronization grids in one or each of the preset frequency-domain units, and there is one SSB on each of the at least two synchronization grids; The frequency-domain span of at least two SSBs on one or each of the preset frequency-domain units is greater than or equal to a third threshold; The proportion of the frequency-domain span of at least two SSBs on one or each of the preset frequency-domain units in the frequency-domain unit where they are located is greater than or equal to a fourth threshold; There are two specific SSBs on one or each of the preset frequency-domain units, wherein one specific SSB is located at the upper edge of the frequency domain, and the other specific SSB is located at the lower edge of the frequency domain; There are two specific SSBs on one or each of the preset frequency-domain units, wherein one specific SSB is located at the upper edge of the frequency domain, and the other specific SSB is located at the lower edge of the frequency domain, and the frequency-domain interval between the specific SSB located at the upper edge of the frequency domain and the specific SSB located at the lower edge of the frequency domain is greater than or equal to a fifth threshold; There are two specific SSBs on one or each of the preset frequency-domain units, one specific SSB is located at the upper edge of the frequency domain, and the other specific SSB is located at the lower edge of the frequency domain, and the proportion of the frequency-domain interval between the specific SSB located at the upper edge of the frequency domain and the specific SSB located at the lower edge of the frequency domain in the frequency-domain unit where they are located is greater than or equal to a sixth threshold; There is at least one first SSB, wherein the first SSB is used to indicate whether there is an SSB with frequency repetition with it; Whether an SSB has an SSB with frequency repetition with it is associated with at least one of the following: bandwidth, sub-band, sub-carrier spacing (SCS), waveform; There are at least two SSBs located in the same time unit, and the at least two SSBs are respectively in different synchronization grids; There are at least two SSBs located in the same time unit, and the at least two SSBs include a second SSB, the second SSB is located on a synchronization grid, and there is a frequency-domain offset between the second SSB and other SSBs among the at least two SSBs; There are at least two SSBs, where the at least two SSBs include a third SSB, and the third SSB is frequency-division multiplexed with partial signals or channels in another SSB on partial time-domain resources; There are at least two SSBs, where the at least two SSBs include a fourth SSB, the fourth SSB is frequency-division multiplexed with partial signals or channels in one SSB on a part of time-domain resources, and the fourth SSB is frequency-division multiplexed with partial signals or channels in another SSB on another part of time-domain resources.

36. The apparatus according to claim 34, Among them, The transmission of at least one of the primary synchronization signal PSS, the secondary synchronization signal SSS, and the physical broadcast channel PBCH in the SSB using interleaved resources supports at least one of the following: An interleaving structure based on the physical resource block PRB group granularity, an interleaving structure based on the PRB granularity, an interleaving structure based on the sub-PRB granularity, an interleaving structure based on the subcarrier granularity, an interleaving structure based on a specific frequency-domain unit granularity.

37. The apparatus according to claim 34 or 36, Among them, The interleaving structure supported by the transmission of at least one of PSS, SSS, and PBCH in the SSB using interleaved resources satisfies at least one of the following: The interval between two adjacent frequency-domain units is the same; The interval between two adjacent frequency-domain units is different; At least one of the size of each frequency-domain unit, the interval between two adjacent frequency-domain units, and the total number of frequency-domain units is agreed by the protocol or configured by the network side; At least one of the size of each frequency-domain unit, the interval between two adjacent frequency-domain units, and the total number of frequency-domain units is determined based on the capabilities reported by the terminal; Different cyclic shift or phase rotation methods are adopted between different frequency-domain units.

38. The apparatus according to claim 36 or 37, Among them, The resource multiplexing of the SSB using interleaved resources and its associated signals is in different interleaving structures.

39. A terminal, comprising a transceiver, a processor, and a memory, the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the SSB transmission method on the unlicensed spectrum as described in any one of claims 1 to 14 are implemented.

40. A network-side device, comprising a transceiver, a processor, and a memory, the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the SSB transmission method on the unlicensed spectrum as described in any one of claims 15 to 28 are implemented.

41. A readable storage medium, wherein, A program or instruction is stored on the readable storage medium, and when the program or instruction is executed by the processor, the steps of the SSB transmission method on the unlicensed spectrum as described in any one of claims 1 to 14 are implemented, or the steps of the SSB transmission method on the unlicensed spectrum as described in any one of claims 15 to 28 are implemented.

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