SSB transmission method, device and equipment on unlicensed spectrum

Abstract

The invention discloses an SSB transmission method, device and equipment on an unlicensed spectrum, and belongs to the field of communication, and the SSB transmission method on the unlicensed spectrum in the embodiment of the invention comprises the steps that a terminal receives or detects an SSB; wherein the SSB satisfies at least one of the following conditions: FDM between the SSB and other SSBs, FDM between different parts in the SSB, use of interleaving resources, positioning in a specific bandwidth, and association with a specific waveform; wherein the width of the specific bandwidth is smaller than or equal to a first threshold value, and the corresponding bandwidth of the specific waveform on the unlicensed spectrum is larger than or equal to a second threshold value. In the embodiment of the invention, the SSB meets at least one of the following conditions: FDM between the SSB and other SSBs, FDM between different parts in the SSB, use of interleaving resources, positioning in a specific bandwidth and association of a specific waveform, so that the spectral bandwidth occupied by the SSB can be improved to meet the OCB requirement.

Description

Technical Field

[0001] This application relates to the field of communications, and more particularly, to a method, apparatus, and device for SSB transmission on unlicensed spectrum. Background Art

[0002] On unlicensed spectrum, there are clear requirements for the Occupied channel bandwidth (OCB). Among them, OCB is defined as the bandwidth that occupies 99% of the signal energy, generally 80% to 100% of the nominal channel bandwidth (NCB). For example, for a 20 MHz channel bandwidth, to meet the 80% OCB bandwidth requirement, the uplink signal of the terminal needs to be transformed into a spectrum bandwidth that occupies 16 MHz.

[0003] When the Synchronization Signal Block (SSB) is transmitted on unlicensed spectrum, how to design the SSB to meet the OCB requirement is a problem that needs to be solved. Summary of the Invention

[0004] Embodiments of this application provide a method, apparatus, and device for SSB transmission on unlicensed spectrum. The SSB satisfies at least one of the following: FDM between other SSBs, FDM between different parts of the SSB, using interleaved resources, being located in a specific bandwidth, and being associated with a specific waveform. Thus, the spectrum bandwidth occupied by the SSB can be increased to meet the OCB requirement, and the problem that the SSB transmission on unlicensed spectrum cannot meet the OCB requirement can be solved.

[0005] In a first aspect, a method for SSB transmission on unlicensed spectrum is provided, including:

[0006] A terminal receives or detects a Synchronization Signal Block SSB;

[0007] Wherein, the SSB satisfies at least one of the following: Frequency Division Multiplexing (FDM) between other SSBs, FDM between different parts of the SSB, using interleaved resources, being located in a specific bandwidth, and being associated with a specific waveform;

[0008] 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 unlicensed spectrum is greater than or equal to a second threshold.

[0009] In a second aspect, a method for SSB transmission on unlicensed spectrum is provided, including:

[0010] A network-side device transmits a Synchronization Signal Block SSB;

[0011] Among them, the SSB satisfies at least one of the following: frequency division multiplexing (FDM) with other SSBs, using interleaved resources, located in a specific bandwidth, associated with a specific waveform;

[0012] Among them, 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.

[0013] In a third aspect, a SSB transmission device in an unlicensed spectrum is provided, including:

[0014] A transceiver unit, configured to receive or detect a synchronization signal block (SSB);

[0015] Among them, 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;

[0016] Among them, 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.

[0017] In a fourth aspect, a SSB transmission device in an unlicensed spectrum is provided, including:

[0018] A transceiver unit, configured to transmit a synchronization signal block (SSB);

[0019] Among them, 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;

[0020] Among them, 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.

[0021] In a fifth aspect, a terminal is provided. The terminal includes a transceiver, a processor, and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0022] In a sixth aspect, a terminal is provided, including a processor and a communication interface;

[0023] Among them, the communication interface is configured to receive or detect a synchronization signal block (SSB);

[0024] Among them, 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;

[0025] 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.

[0026] In a seventh aspect, a network-side device is provided, which includes a transceiver, a processor, and a memory. The memory stores programs or instructions that can run on the processor. When the programs or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0027] In an eighth aspect, a network-side device is provided, including a processor and a communication interface;

[0028] Wherein, the communication interface is used to send a Synchronization Signal Block (SSB);

[0029] 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;

[0030] 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.

[0031] In a ninth aspect, a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are 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.

[0032] In a tenth aspect, a wireless communication system is provided, including: a terminal and a network-side device. 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.

[0033] In an eleventh aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the method described in the first aspect, or to implement the method described in the second aspect.

[0034] In a twelfth aspect, a computer program / program product is provided. The computer program / program product is stored in a storage medium. The program / program product is executed by at least one processor to implement the steps of the method for SSB transmission on the unlicensed spectrum described in the first aspect or the second aspect.

[0035] In the embodiments of the present application, the SSB satisfies at least one of the following: FDM between other SSBs, FDM between different parts of the SSB, using interleaved resources, being located in a specific bandwidth, and being associated with a specific waveform, so as to improve the spectral bandwidth occupied by the SSB to meet the OCB requirements and solve the problem that the SSB transmission on the unlicensed spectrum cannot meet the OCB requirements. For example, by designing the FDM SSB (FDMed SSB), the spectral bandwidth occupied by the SSB can be improved, so as to meet the OCB requirements and reduce the transmission delay of the SSB. For another example, by designing the interleaved structure (interlace) supported by the transmission of at least one of the PSS, SSS, and PBCH in the SSB, the spectral bandwidth occupied by the SSB can be improved, so as to meet 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 spectral bandwidth occupied by the SSB can be improved, so as to meet the OCB requirements. For yet another example, the bandwidth corresponding to the specific waveform on the unlicensed spectrum is greater than or equal to the second threshold. By designing the specific waveform, the spectral bandwidth occupied by the SSB can be improved, so as to meet the OCB requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0037] Figure 1 It is a schematic diagram of a communication system architecture provided by the embodiments of the present application.

[0038] Figure 2 It is a schematic diagram of an SSB provided by the present application.

[0039] Figure 3 It is a schematic flowchart of a method for SSB transmission on the unlicensed spectrum provided by the embodiments of the present application.

[0040] Figures 4 to 7 They are respectively schematic diagrams of the frequency division multiplexed SSB provided by the embodiments of the present application.

[0041] Figure 8 It is a schematic block diagram of a device for SSB transmission on the unlicensed spectrum provided by the embodiments of the present application.

[0042] Figure 9 It is a schematic block diagram of another device for SSB transmission on the unlicensed spectrum provided by the embodiments of the present application.

[0043] Figure 10 It is a schematic block diagram of a communication device provided according to an embodiment of the present application.

[0044] Figure 11 It is a schematic diagram of the hardware structure of a terminal provided according to an embodiment of the present application.

[0045] Figure 12 It is a schematic block diagram of a network-side device provided according to an embodiment of the present application. Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0047] The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first" and "second" are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "or" in the present application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0048] The term "indication" in the present application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly tells the receiver specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0049] It should be noted that the technology described in the embodiments of this application is not limited to the Ambient 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. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes the New Radio (NR) system for illustrative purposes, and the NR term is used in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th Generation (6 th Generation, 6G) communication system.

[0050] Figure 1The block diagram of a wireless communication system to which the embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a 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, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home devices with wireless communication functions, such as refrigerators, TVs, washing machines, or furniture, etc.), a game console, a personal computer (PC), a teller machine, or a self-service machine, etc., which are terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be referred to as a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip, or a vehicle unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application.

[0051] The network-side device 12 may include an access network device or a core network device.

[0052] Among them, the access network device may also be referred to as a Radio Access Network (RAN) device, a radio access network function, or a radio access network unit. The access network device may include a base station, a Wireless Local Area Network (WLAN) Access Point (AP), or a Wireless Fidelity (WiFi) node, etc. Among them, the base station may 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, Transmission Reception Point (TRP), or some other suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to a specific technical term. It should be noted that in the embodiments of this application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0053] Among them, the core network devices may include but are not limited to at least one of the following: core network nodes, core network functions, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), Binding Support Function (BSF), Application Function (AF), Network Data Analytics Function (NWDAF), Location Management Function (LMF), etc. It should be noted that in the embodiments of this application, only the core network devices in the NR system are taken as examples for introduction, and the specific types of core network devices are not limited.

[0054] To facilitate a better understanding of the embodiments of this application, the synchronization signal and PBCH are described.

[0055] In order for the terminal to search for a reasonable cell and synchronize with the selected cell, it is usually necessary for the network to broadcast the synchronization signal and provide certain primary information about the cell. Specifically, the SSB can be as Figure 2As shown in the figure, the synchronization signal (SS) mainly includes the primary synchronization signal (PSS) and the secondary synchronization signal (SSS). Among them, PSS and SSS can occupy 127 subcarriers, and the physical broadcast channel (PBCH) on both sides of SSS can occupy 4 physical resource blocks (PRBs). PBCH can carry the main system information, also known as the master information block (MIB).

[0056] It should be noted that SSB can also be referred to as the synchronization signal / physical broadcast channel block (SS / PBCH block).

[0057] To facilitate a better understanding of the embodiments of this application, the sync raster and GSCN are described.

[0058] 5G NR defines a synchronization raster for 0 - 100 GHz. The number of the synchronization raster is called the global synchronization channel number (GSCN). The base station can send SSB (which can also be referred to as the synchronization signal / physical broadcast signal block (SS / PBCH block)) on the synchronization raster. The positions and calculations of GSCN in different frequency domains are shown in Table 1 below.

[0059] For example, when GSCN = 2, it can be deduced that N = 1 and M = 1, and thus the corresponding frequency domain position is 1250 kHz.

[0060] Table 1

[0061]

[0062] According to the frequency domain planning of NR, based on different subcarrier spacings (SCS), the supported channel bandwidths (bands) are defined for different operating frequency bands. Table 2 below shows the information related to the channel bandwidth of band n1. For example, for band n1, when the SCS of the transmitted data / control signal is 15 kHz, the minimum channel bandwidth on this band is 5 MHz.

[0063] Table 2

[0064]

[0065] In NR, the range and step size (or interval) of GSCN are defined 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 of n41 is 6246–6714, the step size is 3, and the GSCN numbers within the range of n41 are 6246, 6249, ……, 6714.

[0066] It should be noted that there may be frequency domain overlap between different bands. For example, for band n38 and band n41, as can be seen from Table 3 below, although there is overlap between these two frequency bands, the step sizes of GSCN are different.

[0067] Table 3

[0068]

[0069] To facilitate a better understanding of the embodiments of the present application, the interleaved resource allocation on the unlicensed spectrum is described.

[0070] 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 60 GHz band). For example, for a 20 MHz channel bandwidth, to meet the 80% OCB bandwidth requirement, the uplink signal of the terminal needs to be transformed into a spectrum bandwidth that occupies 16 MHz. The nominal occupied bandwidth (NCB) refers to the widest frequency band allocated to a single channel, including the guard band channels. In addition, for the unlicensed spectrum, the limit of the spectrum power density (SPD) is also defined. SPD is the average equivalent isotropic radiated power (EIRP) density, with the unit of dBm / MHz and cannot exceed a certain upper limit. For example, for the frequency band from 5470 MHz to 5725 MHz, for terminals that allow transmission power control, its power density cannot exceed 17 dBm / MHz, and for terminals that do not allow transmission power control, its power density cannot exceed 14 dBm / MHz.

[0071] To meet the OCB and increase the transmission power on the premise of meeting the SPD, a resource allocation based on an interleaved structure is designed. That is, the frequency-domain resources are divided into different interleaved structures (interlace), and the resource allocation is carried out in units of interlace, such as type 2 uplink resource allocation. Among them, the number of interlaces included in a BandWidth Part (BWP) is related to the subcarrier spacing (SCS). For example, when the subcarrier spacing is 15 kHz, the number of interlaces M is 10 (that is, in one interlace, the spacing between two adjacent physical resource blocks (PRB)), and the number of PRBs included in each interlace is related to the bandwidth. For example, when the bandwidth is 20 MHz, the total number of PRBs in the bandwidth is 106, and each interlace contains 10 / 11 PRBs. Another example is that when the subcarrier spacing is 30 kHz, the number of interlaces M is 5, and the number of PRBs included in each interlace is related to the bandwidth. For example, when the bandwidth is 20 MHz, the total number of PRBs in the bandwidth is 51, and each interlace contains 10 / 11 PRBs.

[0072] To indicate the interlaces allocated to the terminal, during resource allocation, when the subcarrier spacing is 30 kHz, a 5-bit bitmap is used to indicate which interlaces are allocated to the terminal; when the subcarrier spacing is 15 kHz, a 6-bit Resource Indication Value (RIV) is used to indicate which interlaces are allocated.

[0073] In unlicensed spectrum, it is necessary to listen to the channel before transmission (Listen Before Talk, LBT). Since the frequency-domain granularity of the clear channel assessment (CCA) on 5 GHz is 20 MHz, the resource allocation in NR (NR-based access to unlicensed spectrum, NR-U) on unlicensed spectrum needs to be in units of the LBT frequency-domain granularity, such as 20 MHz, 40 MHz, 60 MHz, 80 MHz. When the BWP bandwidth is greater than one LBT bandwidth, when the base station schedules the transmission of the Physical Uplink Shared Channel (PUSCH), the PUSCH can be scheduled to be transmitted on part of the BWP, that is, by indicating the allocated LBT bandwidth (or the resource block set (RB set), and one RB set corresponds to one LBT bandwidth) to schedule the PUSCH to be transmitted on all or part of the BWP. The terminal determines the PRB resources allocated to the PUSCH according to the indicated interlace, RB set, and intra-carrier guard band (configured by Radio Resource Control (RRC) or agreed upon by the protocol).

[0074] For the random access response (Random Access Response, RAR) uplink grant in NR-U, 12 bits are included to indicate the frequency-domain resource allocation, where X (if the SCS of the activated BWP is 15 kHz, X = 6; if the SCS of the activated BWP is 30 kHz, X = 5) bits are used to indicate the allocated interlace.

[0075] To facilitate the 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, and they all fall within the protection scope of the embodiments of the present application. The embodiments of the present application include at least some of the following contents.

[0076] Figure 3 It is a schematic flowchart of the SSB transmission method 200 on unlicensed spectrum according to the embodiments of the present application. As Figure 3 shown, the SSB transmission method 200 on unlicensed spectrum may include at least some of the following contents:

[0077] S210, the network - side device transmits an SSB; wherein, the SSB satisfies at least one of the following: FDM between the SSB and 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;

[0078] S220, the terminal receives or detects the SSB.

[0079] 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, and the embodiments of the present application may also perform other operations or Figure 3 variations of each operation therein.

[0080] 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 includes at least one of synchronization signals, broadcast signals, broadcast channels, other system messages, and downlink broadcast channels.

[0081] Exemplarily, for the SSB described in the embodiments of the present application, frequency - division multiplexing (FDM) between the SSB and other SSBs, or FDM between different parts of the SSB described in the embodiments of the present application. By designing the FDM SSB (FDMed SSB), the spectral bandwidth occupied by the SSB can be increased, so that the OCB requirements can be met, and the transmission delay of the SSB can also be reduced. Optionally, the other SSB can be an SSB on the unlicensed spectrum or an SSB on the licensed spectrum.

[0082] Exemplarily, in order to meet the OCB requirements and reduce the detection complexity of the 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.

[0083] Exemplarily, for the SSB described in the embodiments of the present application, using interleaved resources (Interlaced SSB), by designing the interleaved structure (interlace) supported by the transmission of at least one of PSS, SSS, and PBCH in the SSB, the spectral bandwidth occupied by the SSB can be increased, so that the OCB requirements can be met.

[0084] Exemplarily, for the SSB described in the embodiments of the present application, it 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 spectral bandwidth occupied by the SSB can be increased, so as to meet the OCB requirements.

[0085] Optionally, the specific bandwidth may be a narrowband, and the specific bandwidth may be agreed upon by a protocol or configured by the network side.

[0086] Optionally, the first threshold is agreed upon by a protocol, or the first threshold is configured by the network side.

[0087] Exemplarily, the SSB described in the embodiments of the present application is associated with a specific waveform, where the bandwidth corresponding to the specific waveform on the unlicensed spectrum is greater than or equal to a second threshold. By designing the specific waveform, the spectrum bandwidth occupied by the SSB can be increased, thereby meeting the OCB requirements.

[0088] Optionally, the specific beam may be an orthogonal time and frequency space (OTFS) waveform, or may be other waveforms, and the embodiments of the present application do not limit this.

[0089] Optionally, the second threshold is agreed upon by a protocol, or the second threshold is configured by the network side.

[0090] In the embodiments of the present application, the SSB satisfies at least one of the following: FDM between other SSBs, FDM between different parts of the SSB, using interleaved resources, being located in a specific bandwidth, and being associated with a specific waveform, so as to increase the spectrum bandwidth occupied by the SSB to meet the OCB requirements, and can solve the problem that the SSB transmission on the unlicensed spectrum cannot meet the OCB requirements.

[0091] In some embodiments, at least two SSBs may be located at different frequency domain positions through frequency division multiplexing. Even if some SSBs are not transmitted, or some SSBs belong to on demand SSBs and are activated or deactivated, it will not affect the downlink LBT requirements. Therefore, this embodiment is suitable for unlicensed frequency domain transmission for network energy saving and can reduce network energy consumption.

[0092] In some embodiments, at least two SSBs may be in different interlace structures. Even if some SSBs are not transmitted, or some SSBs belong to on demand SSBs and are activated or deactivated, it will not affect the downlink LBT requirements. Therefore, this embodiment is suitable for unlicensed frequency domain transmission for network energy saving and can reduce network energy consumption.

[0093] In some embodiments, the network side device may additionally schedule other downlink signals on the frequency band of non-SSB in the time unit where the SSB described in the embodiments of the present application is located, so as to increase the spectrum bandwidth occupied by the SSB to meet the OCB requirements.

[0094] In some embodiments, the SSB of FDM satisfies at least one of the following:

[0095] Located in the unlicensed band;

[0096] 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;

[0097] 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;

[0098] 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 (such as 80%);

[0099] 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;

[0100] 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;

[0101] 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 (such as 80%);

[0102] There is at least one first SSB, where the first SSB is used to indicate whether there is an SSB with a frequency domain repetition with it;

[0103] Whether an SSB has an SSB with a frequency domain repetition with it is associated with at least one of the following: bandwidth, subband, subcarrier spacing (SCS), waveform;

[0104] There are at least two SSBs located in the same time unit, and the at least two SSBs are respectively in different synchronization grids;

[0105] There are at least two SSBs located in the same time unit, and the at least two SSBs include a second SSB which is located on the synchronization raster, and there is a frequency-domain offset between the second SSB and other SSBs among the at least two SSBs;

[0106] There are at least two SSBs, where the at least two SSBs include a third SSB which frequency-division multiplexes with partial signals or channels in another SSB on partial time-domain resources;

[0107] There are at least two SSBs, where the at least two SSBs include a fourth SSB which frequency-division multiplexes with partial signals or channels in one SSB on a part of time-domain resources, and the fourth SSB frequency-division multiplexes with partial signals or channels in another SSB on another part of time-domain resources.

[0108] In some embodiments, there may also be at least one SSB between two specific SSBs existing on one or each frequency-domain unit.

[0109] In some embodiments, the first SSB is located on the synchronization raster.

[0110] In some embodiments, the second SSB is used to indicate system information required for cell access, for example, SIB1.

[0111] In some embodiments, whether there is an SSB with frequency-domain repetition for an SSB can be agreed upon by the protocol, or whether there is an SSB with frequency-domain repetition for an SSB can be configured by the network side. For example, it is stipulated in advance whether there is an SSB with frequency-domain repetition for corresponding SSBs in cases of different bands, sub-bands, sub-carrier intervals, and waveforms.

[0112] 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 an entire bandwidth, or one or each of the preset frequency-domain units is at least two discontinuous bandwidths.

[0113] In some embodiments, one of the preset frequency-domain units can be a specific frequency-domain unit.

[0114] In some embodiments, the SCSs supported by the SSBs of FDM include but are not limited to at least one of the following: 15 kHz, 30 kHz, 60 kHz.

[0115] Exemplarily, there is at least one first SSB, where the first SSB is used to indicate whether there is an SSB that is frequency-domain repeated with it. This embodiment can improve the coverage performance of the SSB. For example, there can be more than two synchronization rasters within 20 MHz, and more SSBs can be sent in the FDM manner to improve the coverage. The terminal can determine whether there is an SSB that is frequency-domain repeated with it according to the first SSB.

[0116] 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, band, subband.

[0117] 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:

[0118] OFDM symbol, time slot, subframe, frame, microsecond, millisecond, second, minute, hour, day.

[0119] Exemplarily, as Figure 4 shown, in the unlicensed spectrum, a frequency-domain offset can be configured between two FDM'ed SSBs, where the PBCH can occupy X resource blocks (RBs), for example, X = 12.

[0120] Exemplarily, in the unlicensed spectrum, 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 in part of the time-domain resources, so as to reduce the overhead of the SSB resources. For example, as Figure 5 shown, the third SSB can multiplex part of the PBCH signal of another SSB in the high-frequency part of the first symbol and the second symbol.

[0121] Exemplarily, in the unlicensed spectrum, 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 part of the signals or channels in one SSB in 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 in another part of the time-domain resources, so as to reduce the overhead of the SSB resources. For example, as Figure 6 shown, the fourth SSB can multiplex part of the PBCH signal of one SSB in the high-frequency part of the first symbol and the second symbol, and the fourth SSB can multiplex part of the PBCH signal of another SSB in the low-frequency part of the third symbol and the fourth symbol.

[0122] Exemplarily, in the unlicensed spectrum, there is an SSB, where frequency division multiplexing is performed between different parts of the SSB. For example, as Figure 7 shown, the PSS signal and the PBCH signal in an SSB are multiplexed in the frequency domain, and the SSS signal and the PBCH signal in the SSB are multiplexed in the frequency domain, so that SSB transmission with a large bandwidth can be achieved to meet the OCB requirements.

[0123] In some embodiments, the transmission of at least one of PSS, SSS, and PBCH in the SSB using interleaved resources supports at least one of the following:

[0124] An interleaving structure based on PRB group (PRB group) granularity, an interleaving structure based on PRB granularity, an interleaving structure based on sub-PRB (sub-PRB) granularity, an interleaving structure based on subcarrier granularity, and an interleaving structure based on specific frequency domain unit granularity.

[0125] It should be noted that the interleaving structure based on PRB group (PRB group) granularity may refer to the interleaving structure configured under the PRB group granularity, the interleaving structure based on PRB granularity may refer to the interleaving structure configured under the PRB granularity, the interleaving structure based on sub-PRB granularity may refer to the interleaving structure configured under the sub-PRB granularity, the interleaving structure based on subcarrier granularity may refer to the interleaving structure configured under the subcarrier granularity, and the interleaving structure based on specific frequency domain unit granularity may refer to the interleaving structure configured under the specific frequency domain unit granularity.

[0126] Optionally, the specific frequency domain unit may be agreed upon by the protocol, or the specific frequency domain unit may be configured by the network side.

[0127] In some embodiments, 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:

[0128] The interval between two adjacent frequency domain units is the same;

[0129] The interval between two adjacent frequency domain units is different;

[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 agreed upon by the protocol or configured by the network side;

[0131] 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;

[0132] Different cyclic shift or phase rotation methods are adopted between different frequency domain units.

[0133] Exemplarily, different means such as Cyclic shift and phase rotation are adopted between different frequency domain units of interlaced SSB to reduce the peak-to-average power ratio (PAPR).

[0134] In some embodiments, the resource multiplexing of the SSB using interleaved resources and its associated signal is in different interleaved structures. Optionally, the resource time-division multiplexing of the SSB using interleaved resources and its associated signal is in different interleaved structures; or, the resource frequency-division multiplexing of the SSB using interleaved resources and its associated signal is in different interleaved structures. Exemplarily, the multiplexing method of the resources of the SSB using interleaved resources and its associated signal can be configured by the network side or agreed upon by the protocol.

[0135] In some embodiments, the signals associated with the SSB using interleaved resources include but are not limited to at least one of the following:

[0136] Positioning reference signals (PRS), Tracking reference signal (TRS), Channel State Information Reference Signal (CSI-RS), downlink broadcast signal.

[0137] In some embodiments, the relationship between the SSB using interleaved resources and the synchronization grid satisfies at least one of the following:

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

[0139] The starting or ending frequency point of the frequency domain span of the SSB using interleaved resources is on the synchronization grid;

[0140] The center frequency point of a specific frequency domain unit corresponding to the SSB using interleaved resources is on the synchronization grid;

[0141] The starting or ending frequency point of a specific frequency domain unit corresponding to the SSB using interleaved resources is on the synchronization grid.

[0142] In this embodiment, the frequency domain resource information of the SSB using interleaved resources can be determined based on the relationship between the SSB using interleaved resources and the synchronization grid.

[0143] Exemplarily, the relationship between the SSB using interleaved resources and the synchronization grid defined by the cell (CD) satisfies at least one of the following:

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

[0145] The starting or ending frequency point of the frequency domain span of the SSB using interleaved resources is on the synchronization grid;

[0146] The center frequency point of the specific frequency domain unit corresponding to the SSB using interleaved resources is on the synchronization grid;

[0147] The starting or ending frequency point of the specific frequency domain unit corresponding to the SSB using interleaved resources is on the synchronization grid.

[0148] Optionally, the specific frequency domain unit corresponding to the SSB using interleaved resources may include at least one of the following:

[0149] The starting frequency domain unit of the SSB using interleaved resources, the terminating frequency domain unit of the SSB using interleaved resources, the intermediate frequency domain unit of the SSB using interleaved resources.

[0150] 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:

[0151] 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 the specific frequency domain unit corresponding to the SSB using interleaved resources, the starting or ending frequency point of the specific frequency domain unit corresponding to the SSB using interleaved resources.

[0152] Exemplarily, the frequency domain resource grid may be a Common RB grid.

[0153] In this embodiment, the reference frequency point when determining the offset corresponding to the frequency domain resource grid may be determined based on the frequency domain resource information of the SSB using interleaved resources.

[0154] 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, the starting or ending frequency domain granularity unit of the specific frequency domain unit corresponding to the SSB using interleaved resources.

[0155] Exemplarily, the frequency domain granularity unit may be at least one of the following: sub - carrier, RB.

[0156] In this embodiment, the reference frequency-domain granularity unit for 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.

[0157] 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 point is at least one of the following: the central frequency point of the frequency-domain span of the SSB using interleaved resources, the start or end 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, and the start or end frequency point of a specific frequency-domain unit corresponding to the SSB using interleaved resources.

[0158] 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.

[0159] 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 central frequency-domain granularity unit of the frequency-domain span of the SSB using interleaved resources, the start or end 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, and the start or end frequency-domain granularity unit of a specific frequency-domain unit corresponding to the SSB using interleaved resources.

[0160] In this embodiment, the reference frequency-domain granularity unit 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.

[0161] Therefore, in the embodiments of the present application, the SSB satisfies at least one of the following: the SSB with frequency division multiplexing (FDM) between other SSBs, FDM between different parts of the SSB, using interleaved resources, located in a specific bandwidth, associated with a specific waveform, so as to improve the spectral bandwidth occupied by the SSB to meet the OCB requirements, and also reduce the transmission delay of the SSB. At the same time, the embodiments of the present application can support energy-saving transmission of the network, thereby reducing the network energy consumption. For example, by designing the SSB with FDM (FDMed SSB), the spectral bandwidth occupied by the SSB can be improved, so as to meet the OCB requirements and reduce the transmission delay of the SSB. For another example, by designing the interleaved structure (interlace) supported by the transmission of at least one of the PSS, SSS, and PBCH in the SSB, the spectral bandwidth occupied by the SSB can be improved, so as to meet 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 spectral bandwidth occupied by the SSB can be improved, so as to meet 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 spectral bandwidth occupied by the SSB can be improved, so as to meet the OCB requirements.

[0162] In the SSB transmission method on the unlicensed spectrum provided by the embodiments of the present application, the execution subject may be an SSB transmission device on the unlicensed spectrum, or a processing unit in the SSB transmission device on the unlicensed spectrum for executing the SSB transmission method on the unlicensed spectrum. In the embodiments of the present application, taking the SSB transmission device on the unlicensed spectrum executing the SSB transmission method on the unlicensed spectrum as an example, the SSB transmission device on the unlicensed spectrum provided by the embodiments of the present application is described.

[0163] Figure 8 Fig. shows a schematic block diagram of an SSB transmission device 300 on the unlicensed spectrum according to an embodiment of the present application.

[0164] As Figure 8 shown, the SSB transmission device 300 on the unlicensed spectrum includes:

[0165] a transceiver unit 310, configured to receive or detect a synchronization signal block SSB;

[0166] wherein, the SSB satisfies at least one of the following: frequency division multiplexing (FDM) between the SSB and other SSBs, FDM between different parts of the SSB, using interleaved resources, located in a specific bandwidth, associated with a specific waveform;

[0167] 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.

[0168] In some embodiments, the SSB of FDM satisfies at least one of the following:

[0169] Located in unlicensed spectrum;

[0170] Located on a 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;

[0171] 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;

[0172] The ratio of the frequency domain span of at least two SSBs on one or each of the preset frequency domain units to the frequency domain unit where they are located is greater than or equal to a fourth threshold;

[0173] 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;

[0174] 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;

[0175] 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 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 where they are located is greater than or equal to a sixth threshold;

[0176] There is at least one first SSB, where the first SSB is used to indicate whether there is an SSB with frequency domain repetition with it;

[0177] Whether an SSB has an SSB with frequency domain repetition with it is associated with at least one of the following: bandwidth, sub-band, sub-carrier spacing SCS, waveform;

[0178] There are at least two SSBs located in the same time unit, and the at least two SSBs are respectively on different synchronization grids;

[0179] 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;

[0180] 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;

[0181] 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.

[0182] In some embodiments, the first SSB is located on a synchronization grid.

[0183] In some embodiments, the second SSB is used to indicate system information required for cell access.

[0184] 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.

[0185] In some embodiments, 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:

[0186] 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.

[0187] In some embodiments, 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:

[0188] The interval between two adjacent frequency-domain units is the same;

[0189] The interval between two adjacent frequency-domain units is different;

[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 agreed by the protocol or configured by the network side;

[0191] 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;

[0192] Different cyclic shift or phase rotation methods are adopted between different frequency domain units.

[0193] In some embodiments, the resource multiplexing of the SSB using the interleaved resource and the signal associated therewith is in different interleaved structures.

[0194] In some embodiments, the resource time division multiplexing of the SSB using the interleaved resource and the signal associated therewith is in different interleaved structures; or,

[0195] The resource frequency division multiplexing of the SSB using the interleaved resource and the signal associated therewith is in different interleaved structures.

[0196] In some embodiments, 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.

[0197] In some embodiments, the relationship between the SSB using the interleaved resource and the synchronization grid satisfies at least one of the following:

[0198] The center frequency point of the frequency domain span of the SSB using the interleaved resource is on the synchronization grid;

[0199] The start or end frequency point of the frequency domain span of the SSB using the interleaved resource is on the synchronization grid;

[0200] The center frequency point of the specific frequency domain unit corresponding to the SSB using the interleaved resource is on the synchronization grid;

[0201] The start or end frequency point of the specific frequency domain unit corresponding to the SSB using the interleaved resource is on the synchronization grid.

[0202] In some embodiments, the SSB using the interleaved resource is the cell-defined SSB using the interleaved resource.

[0203] 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 the interleaved resource, the start or end frequency point of the frequency domain span of the SSB using the interleaved resource, the center frequency point of the specific frequency domain unit corresponding to the SSB using the interleaved resource, the start or end frequency point of the specific frequency domain unit corresponding to the SSB using the interleaved resource; or,

[0204] 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 starting or ending frequency-domain granularity unit of the frequency-domain span of the SSB using the interleaved resource, the central frequency-domain granularity unit of the specific frequency-domain unit corresponding to the SSB using the interleaved resource, and the starting or ending frequency-domain granularity unit of the specific frequency-domain unit corresponding to the SSB using the interleaved resource.

[0205] 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 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 starting or ending frequency point of the frequency-domain span of the SSB using the interleaved resource, the central frequency point of the specific frequency-domain unit corresponding to the SSB using the interleaved resource, and the starting or ending frequency point of the specific frequency-domain unit corresponding to the SSB using the interleaved resource; or,

[0206] 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 starting or ending frequency-domain granularity unit of the frequency-domain span of the SSB using the interleaved resource, the central frequency-domain granularity unit of the specific frequency-domain unit corresponding to the SSB using the interleaved resource, and the starting or ending frequency-domain granularity unit of the specific frequency-domain unit corresponding to the SSB using the interleaved resource.

[0207] In some embodiments, the above transceiver unit 310 may be a communication interface or transceiver, or an input / output interface of a communication chip or system-on-chip.

[0208] It should be understood that the SSB transmission device 300 on the unlicensed spectrum according to the embodiments of the present application may correspond to the terminal in the method embodiments of the present application, and each unit in the SSB transmission device 300 on the unlicensed spectrum respectively Figure 3 to implement the corresponding processes of the terminal in the method 200 shown. For the sake of brevity, details are not described herein again.

[0209] Therefore, in the embodiments of the present application, the SSB satisfies at least one of the following: frequency division multiplexing (FDM) between other SSBs, FDM between different parts of the SSB, using interleaved resources, being located in a specific bandwidth, and being associated with a specific waveform, so as to improve the spectral bandwidth occupied by the SSB to meet the OCB requirements and reduce the transmission delay of the SSB. At the same time, the embodiments of the present application can support energy-saving transmission of the network, thereby reducing network energy consumption. For example, by designing the SSB with FDM (FDMed SSB), the spectral bandwidth occupied by the SSB can be improved, so as to meet the OCB requirements and reduce the transmission delay of the SSB. For another example, by designing the interleaved structure (interlace) supported by the transmission of at least one of the PSS, SSS, and PBCH in the SSB, the spectral bandwidth occupied by the SSB can be improved, so as to meet 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 spectral bandwidth occupied by the SSB can be improved, so as to meet the OCB requirements. For yet 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 spectral bandwidth occupied by the SSB can be improved, so as to meet the OCB requirements.

[0210] Figure 9 FIG. 4 shows a schematic block diagram of an SSB transmission device 400 on an unlicensed spectrum according to an embodiment of the present application.

[0211] As Figure 9 shown, the SSB transmission device 400 on the unlicensed spectrum includes:

[0212] a transceiver unit 410, configured to transmit a synchronization signal block SSB;

[0213] wherein, the SSB satisfies at least one of the following: frequency division multiplexing (FDM) between other SSBs, FDM between different parts of the SSB, using interleaved resources, being located in a specific bandwidth, and being associated with a specific waveform;

[0214] wherein, the width of the specific bandwidth is less than or equal to the first threshold, and the bandwidth corresponding to the specific waveform in the unlicensed spectrum is greater than or equal to the second threshold.

[0215] In some embodiments, the SSB with FDM satisfies at least one of the following:

[0216] being located in the unlicensed spectrum;

[0217] being 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;

[0218] 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;

[0219] The ratio of the frequency-domain span of at least two SSBs on one or each of the preset frequency-domain units to the frequency-domain unit where they are located is greater than or equal to a fourth threshold;

[0220] 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;

[0221] 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;

[0222] 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 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 where they are located is greater than or equal to a sixth threshold;

[0223] 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;

[0224] Whether an SSB has an SSB with the same frequency domain as it is associated with at least one of the following: bandwidth, sub-band, sub-carrier spacing SCS, waveform;

[0225] There are at least two SSBs located in the same time unit, and the at least two SSBs are respectively in different synchronization grids;

[0226] 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;

[0227] 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;

[0228] 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 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.

[0229] In some embodiments, the first SSB is located on the synchronization grid.

[0230] In some embodiments, the second SSB is used to indicate the system information required for cell access.

[0231] 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.

[0232] In some embodiments, 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:

[0233] 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 sub-carrier granularity, an interleaving structure based on the specific frequency-domain unit granularity.

[0234] In some embodiments, 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:

[0235] The interval between two adjacent frequency-domain units is the same;

[0236] The interval between two adjacent frequency-domain units is different;

[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 agreed by the protocol or configured by the network side;

[0238] 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;

[0239] Different cyclic shift or phase rotation methods are used between different frequency-domain units.

[0240] In some embodiments, the resource multiplexing of the SSB using the interleaved resources and its associated signals is in different interleaving structures.

[0241] In some embodiments, the resource time division multiplexing of the SSB using interleaved resources and its associated signal is in different interleaved structures; or,

[0242] The resource frequency division multiplexing of the SSB using interleaved resources and its associated signal is in different interleaved structures.

[0243] In some embodiments, the signal associated with the SSB using interleaved resources 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.

[0244] In some embodiments, the relationship between the SSB using interleaved resources and the synchronization grid satisfies at least one of the following:

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

[0246] The starting or ending frequency point of the frequency domain span of the SSB using interleaved resources is on the synchronization grid;

[0247] The center frequency point of the specific frequency domain unit corresponding to the SSB using interleaved resources is on the synchronization grid;

[0248] The starting or ending frequency point of the specific frequency domain unit corresponding to the SSB using interleaved resources is on the synchronization grid.

[0249] In some embodiments, the SSB using interleaved resources is the cell-defined SSB using interleaved resources.

[0250] 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 the specific frequency domain unit corresponding to the SSB using interleaved resources, the starting or ending frequency point of the specific frequency domain unit corresponding to the SSB using interleaved resources; or,

[0251] 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, the starting or ending frequency domain granularity unit of the specific frequency domain unit corresponding to the SSB using interleaved resources.

[0252] 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 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 the specific frequency domain unit corresponding to the SSB using the interleaved resource, the start or end frequency point of the specific frequency domain unit corresponding to the SSB using the interleaved resource; or,

[0253] 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 the specific frequency domain unit corresponding to the SSB using the interleaved resource, the start or end frequency domain granularity unit of the specific frequency domain unit corresponding to the SSB using the interleaved resource.

[0254] In some embodiments, the above 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.

[0255] It should be understood that the SSB transmission device 400 on the unlicensed spectrum according to the embodiments of the present application may correspond to the network-side device in the method embodiments of the present application, and each unit in the SSB transmission device 400 on the unlicensed spectrum is respectively for implementing Figure 3 the corresponding processes of the network-side device in the method 200 shown. For the sake of brevity, they will not be described herein again.

[0256] Therefore, in the embodiments of the present application, the SSB satisfies at least one of the following: FDM between other SSBs, FDM between different parts of the SSB, using interleaved resources, being located in a specific bandwidth, and being associated with a specific waveform, so as to improve the spectral bandwidth occupied by the SSB to meet the OCB requirements and also reduce the transmission delay of the SSB. At the same time, the embodiments of the present application can support energy-saving transmission of the network, thereby reducing the network energy consumption. For example, by designing the SSB with FDM (FDMed SSB), the spectral bandwidth occupied by the SSB can be improved, so as to meet the OCB requirements and also reduce the transmission delay of the SSB. For another example, by designing the interleaved structure (interlace) supported by the transmission of at least one of PSS, SSS, and PBCH in the SSB, the spectral bandwidth occupied by the SSB can be improved, so as to meet 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 spectral bandwidth occupied by the SSB can be improved, so as to meet the OCB requirements. For yet another example, the bandwidth corresponding to the specific waveform on the unlicensed spectrum is greater than or equal to the second threshold. By designing the specific waveform, the spectral bandwidth occupied by the SSB can be improved, so as to meet the OCB requirements.

[0257] The SSB transmission device on the unlicensed spectrum in the embodiments 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 a chip. The electronic device can be a terminal or a network-side device, or other devices other than the terminal or the network-side device. Exemplarily, 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 a server, a Network Attached Storage (NAS), etc. The embodiments of the present application do not make specific limitations.

[0258] The SSB transmission device on the unlicensed spectrum provided by the embodiments of the present application can implement Figure 3 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein again.

[0259] As Figure 10 shown, the embodiments of the present application further provide a communication device 500, including a processor 501 and a memory 502, and a program or instruction that can run on the processor 501 is stored on the memory 502.

[0260] For example, when the communication device 500 is a terminal, when the program or instruction is executed by the processor 501, it implements each step executed by the terminal in the method embodiments of the SSB transmission on the unlicensed spectrum and can achieve the same technical effects. To avoid repetition, details are not described herein again.

[0261] For another example, when the communication device 500 is a network-side device, when the program or instruction is executed by the processor 501, it implements each step executed by the network-side device in the above-mentioned SSB transmission method embodiment on the unauthorized spectrum, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0262] The embodiment of the present application also provides a terminal, including a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement as Figure 3 the steps executed by the terminal in the method embodiment shown. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment. Each implementation process and implementation manner of the above method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect. Specifically, Figure 11 FIG. is a schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0263] The terminal 600 includes, but is not limited to: at least some components such as 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 a processor 610.

[0264] Those skilled in the art can understand that the terminal 600 may further include a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 610 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 11 The terminal structure shown in does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0265] It should be understood that in the embodiments of the present application, the input unit 604 may include a Graphics Processing Unit (GPU) 6041 and a microphone 6042. The graphics processor 6041 processes the image data of static pictures or videos obtained by an image capturing device (such as a camera) in the video capturing mode or the image capturing mode. The display unit 606 may include a display panel 6061, and the display panel 6061 may be configured in the form of, for example, a liquid crystal display, an organic light emitting diode, etc. The user input unit 607 includes at least one of a touch panel 6071 and other input devices 6072. The touch panel 6071 is also referred to as a touch screen. The touch panel 6071 may include two parts: a touch detection device and a touch controller. The 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 elaborated here.

[0266] In the embodiments of the present application, after receiving downlink data from a network-side device, the radio frequency unit 601 may transmit it to the processor 610 for processing; in addition, the radio frequency unit 601 may send uplink data to the network-side device. Generally, 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, etc.

[0267] The memory 609 can be used to store software programs or instructions as well as 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. Among them, the first storage area may store an operating system, application programs 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 (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct rambus random access memory (DRRAM). The memory 609 in the embodiments of the present application includes but is not limited to these and any other suitable types of memories.

[0268] The processor 610 may include at least one processing unit; optionally, the processor 610 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes SSB transmission signals on the unlicensed spectrum, such as a baseband processor. It can be understood that the above modem processor may not be integrated into the processor 610 either.

[0269] Among them, the radio frequency unit 601 is used to detect or receive SSB;

[0270] Among them, 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;

[0271] 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.

[0272] It can be understood that the implementation processes of the implementation manners mentioned in this embodiment may refer to the relevant descriptions of the method embodiment and achieve the same or corresponding technical effects. To avoid repetition, they will not be elaborated here.

[0273] The embodiment of the present application further provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is configured to run a program or instruction to implement as Figure 3 the steps executed by the network-side device in the method embodiment shown. This network-side device embodiment corresponds to the above network-side device method embodiment. Each implementation process and implementation manner of the above method embodiment can be applied to this network-side device embodiment and can achieve the same technical effects. For the sake of brevity, they will not be elaborated here.

[0274] Specifically, the embodiment of the present application further provides a network-side device. As Figure 12 shown, 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. The antenna 71 is connected to the radio frequency device 72. In the uplink direction, the radio frequency device 72 receives information through the antenna 71 and sends the received information to the baseband device 73 for processing. In the downlink direction, the baseband device 73 processes the information to be sent and sends it to the radio frequency device 72. After processing the received information, the radio frequency device 72 sends it out through the antenna 71.

[0275] The method executed by the network-side device in the above embodiment can be implemented in the baseband device 73, and the baseband device 73 includes a baseband processor.

[0276] The baseband device 73 may include, for example, at least one baseband board, and at least two chips are provided on the baseband board. As Figure 12 shown, one of the chips is, for example, a baseband processor, which is connected to the memory 75 through a bus interface to call the program in the memory 75 and execute the operations of the network device shown in the above method embodiment.

[0277] The network-side device may further include a network interface 76, and this interface is, for example, a Common Public Radio Interface (CPRI).

[0278] Specifically, the network-side device 700 in the embodiment of the present application further includes: instructions or programs stored on the memory 75 and executable on the processor 74. The processor 74 calls the instructions or programs in the memory 75 to execute Figure 9The methods executed by the units shown achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0279] The embodiments of the present application further provide a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, it implements each process of the above-mentioned embodiment of the SSB transmission method on the unlicensed spectrum and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0280] Among them, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disks, or optical discs, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0281] The embodiments of the present application further provide a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to implement each process of the above-mentioned embodiment of the SSB transmission method on the unlicensed spectrum and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0282] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip.

[0283] The embodiments of the present application further provide 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 each process of the above-mentioned embodiment of the SSB transmission method on the unlicensed spectrum and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0284] The embodiments of the present application further provide a communication system, including: a terminal and a network-side device. Among them, the terminal can be used to execute the steps executed by the terminal in the above-mentioned SSB transmission method on the unlicensed spectrum, and the network-side device can be used to execute the steps executed by the network-side device in the above-mentioned SSB transmission method on the unlicensed spectrum.

[0285] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or apparatus comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or apparatus. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising such element. In addition, it should be pointed out that the scope of the methods and apparatuses 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 a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0286] From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions for causing a terminal or a network-side device to execute the methods described in various embodiments of the present application.

[0287] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms of embodiments without departing from the spirit and scope protected by the claims of the present application. These embodiments are all within the protection scope of the present application.

Claims

1. A method for SSB transmission on unlicensed spectrum, characterized in that, including: 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 in the unlicensed spectrum is greater than or equal to a second threshold.

2. The method according to claim 1, wherein the SSBs with FDM satisfy 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 ratio of the frequency domain span of at least two SSBs on one or each of the preset frequency domain units to 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 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 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, 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 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, wherein 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 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 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.

3. The method according to claim 2, wherein The first SSB is located on a synchronization grid.

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

5. The method according to claim 2, wherein 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.

6. The method according to claim 1, wherein 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 sub-carrier granularity, an interleaving structure based on the specific frequency-domain unit granularity.

7. The method according to claim 1 or 6, wherein 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 shifts or phase rotation methods are used between different frequency-domain units.

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

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

10. The method according to claim 8 or 9, wherein The signals associated with the SSB using 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, wherein The relationship between the SSB using interleaved resources and the synchronization grid satisfies at least one of the following: The central frequency point of the frequency-domain span of the SSB using interleaved resources is on the synchronization raster; The starting or ending frequency point of the frequency-domain span of the SSB using interleaved resources is on the synchronization raster; The central frequency point of the specific frequency-domain unit corresponding to the SSB using interleaved resources is on the synchronization raster; The starting or ending frequency point of the specific frequency-domain unit corresponding to the SSB using interleaved resources is on the synchronization raster.

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

13. The method according to any one of claims 1, 6 to 12, 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 interleaved resources, the starting or ending frequency point of the frequency-domain span of the SSB using interleaved resources, the central frequency point of the specific frequency-domain unit corresponding to the SSB using interleaved resources, the starting or ending frequency point of the 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 the specific frequency-domain unit corresponding to the SSB using interleaved resources, the starting or ending frequency-domain granularity unit of the 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 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 interleaved resources, the starting or ending frequency point of the frequency-domain span of the SSB using interleaved resources, the central frequency point of the specific frequency-domain unit corresponding to the SSB using interleaved resources, the starting or ending frequency point of the 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 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 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 the specific frequency-domain unit corresponding to the SSB using interleaved resources, the starting or ending frequency-domain granularity unit of the specific frequency-domain unit corresponding to the SSB using interleaved resources.

15. A method for SSB transmission on unlicensed spectrum, characterized in that, including: 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, wherein The SSB of FDM satisfies at least one of the following: Located in unlicensed spectrum; Located on a synchronization raster, where there are at least two synchronization rasters in one or each of the preset frequency-domain units, and there is an SSB on each of the at least two synchronization rasters; 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 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, 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 on different synchronization rasters; 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 raster, 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, where the at least two SSBs include a third SSB, and the third SSB is frequency-division multiplexed with 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 part of the signal or channel in one SSB on one part of the time-domain resources, and the fourth SSB is frequency-division multiplexed with part of the signal or channel in another SSB on another part of the time-domain resources.

17. The method according to claim 16, wherein The first SSB is located on a synchronization raster.

18. The method according to claim 16, wherein The second SSB is used to indicate the system information required for cell access.

19. The method according to claim 16, wherein 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, wherein 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 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 sub-carrier granularity, an interleaving structure based on the specific frequency-domain unit granularity.

21. The method according to claim 15 or 20, wherein The interleaving 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 shift or phase rotation methods are used between different frequency-domain units.

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

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

24. The method according to claim 22 or 23, wherein 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, wherein 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 start or end 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 start or end 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, wherein 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, characterized in that, 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, characterized in that, 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, being located 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.

30. The apparatus according to claim 29, characterized in that, The SSBs with FDM satisfy at least one of the following: being located in the unlicensed spectrum; being 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 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 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 one 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, wherein 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, wherein 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; 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.

33. The apparatus according to claim 31 or 32, wherein The SSB using the interleaved resource and the resource of its associated signal are multiplexed in different interleaved structures.

34. An SSB transmission device on unlicensed spectrum, characterized in that, Comprising: A transceiver unit for transmitting a synchronization signal block SSB; Wherein, the SSB satisfies at least one of the following: an SSB that is frequency division multiplexed (FDM) with other SSBs, FDM between different parts of the SSB, using an interleaved resource, located in a specific bandwidth, and 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, wherein The SSB of FDM satisfies at least one of the following: Located in the unlicensed spectrum; Located on the 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 whose frequency domain is repeated with it; Whether an SSB has an SSB whose frequency domain is repeated 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 the synchronization grid, and there is a frequency domain offset between the other SSBs among the at least two SSBs and the second SSB; 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, wherein 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 sub-carrier granularity, an interleaving structure based on the specific frequency-domain unit granularity.

37. The apparatus according to claim 34 or 36, wherein 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 shifts or phase rotation methods are adopted between different frequency-domain units.

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

39. A terminal, characterized in that, Comprising a transceiver, a processor, and a memory, the memory stores programs or instructions that can run on the processor, and when the programs or instructions are 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, characterized in that, Comprising a transceiver, a processor, and a memory, the memory stores programs or instructions that can run on the processor, and when the programs or instructions are 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, characterized in that, Programs or instructions are stored on the readable storage medium, and when the programs or instructions are executed by the processor, the steps of the SSB transmission method on the unlicensed spectrum as described in any one of claims 1 - 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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