Method and apparatus for designing a synchronous grating

Abstract

The application provides a design method and device of a synchronization raster, the method comprising: determining, by a network device, a first bandwidth, a frequency range corresponding to the first bandwidth being higher than 52.6 gigahertz (GHz); and configuring, by the network device, a plurality of synchronization rasters in the first bandwidth according to a first rule, each synchronization raster being configured to place a synchronization signal block (SSB), and each synchronization raster corresponding to a global synchronization number. The design method of the synchronization raster provided by the application can provide adaptive first bandwidths under different subcarrier spacings, and the synchronization rasters in the first bandwidths are reasonably designed to place SSBs, so that a terminal device can access a target SSB by traversing as few SSBs as possible within a search capability range, thereby saving power consumption of the terminal device and improving the efficiency of the terminal device in searching for SSBs.

Description

Technical Field

[0001] This application relates to the field of communications, and more specifically, to a design method and apparatus for a synchronization grating. Background Technology

[0002] As technology evolves, the available frequency bands continue to increase. New Radio (NR) primarily divides frequency bands into two parts: FR1 (Frequency Range 1) and FR2 (Frequency Range 2). FR1 mainly refers to the 450MHz–6GHz bandwidth, while FR2 mainly refers to the 24.25GHz–52.6GHz bandwidth. In addition, the 52.6GHz–71GHz band (above 52.6GHz) is also included in the usage scope of the next 5G mobile communication system. For this spectrum, both shared and non-shared spectrum exist.

[0003] Cell search is the first step for terminal devices to obtain base station services. Through cell search, terminal devices can search for and discover suitable cells and access them. The cell search process includes frequency scanning, cell detection, and broadcast information acquisition. For frequency scanning, terminal devices mainly obtain relevant cell broadcast information by searching for Synchronization Signal Block Patterns (SS / PBCH Block / SSB).

[0004] The frequency domain location information of a terminal device scanning a Service SSB (SSB) can be defined using a synchronization raster, which represents a series of frequency points that can be used to transmit the SSB. When deploying a base station, cells need to be established, and each cell requires a specific SSB. The frequency domain location corresponding to each SSB is the synchronization raster location. The introduction of the synchronization raster concept mainly aims to ensure that the terminal device performs a corresponding search at a specific frequency point location during cell search, avoiding excessive access latency and energy loss caused by the uncertainty of blind searches. The larger the granularity of the synchronization raster configuration, the fewer synchronization raster points per unit frequency domain, and the fewer search locations the terminal needs to traverse to search for a cell, thus shortening the overall cell search time. However, the design of the synchronization raster cannot infinitely expand its deployment granularity; it should ensure that at least one synchronization raster exists within the cell's frequency domain for transmitting the SSB.

[0005] Above 52.6 GHz, due to the increased subcarrier spacing of the SSB, a reasonable synchronization grating design is required to enable terminal equipment to quickly access its corresponding SSB. Summary of the Invention

[0006] This application provides a design method for a synchronization grating, which provides an adaptive first bandwidth under different subcarrier spacings. Within the first bandwidth, a synchronization grating is rationally designed to place synchronization signal blocks (SSBs), enabling the terminal device to access the target SSB by traversing as few SSBs as possible within its search capability range, thereby saving the power consumption of the terminal device and improving the efficiency of the terminal device in searching for SSBs.

[0007] In a first aspect, a design method for synchronization gratings is provided. The method includes: a network device determining a first bandwidth, the frequency range corresponding to the first bandwidth being higher than 52.6 GHz; the network device configuring multiple synchronization gratings within the first bandwidth according to a first rule, each synchronization grating containing a synchronization signal block (SSB), and each synchronization grating corresponding to a global synchronization number.

[0008] According to the design method of the synchronization grating provided in this application, an adaptive first bandwidth is provided under different subcarrier intervals. Within the first bandwidth, the synchronization grating is reasonably designed to transmit the synchronization signal block SSB at the frequency domain position corresponding to the synchronization grating. This enables the terminal device to access the target SSB by traversing as few SSBs as possible within its search capability range, thereby saving the power consumption of the terminal device and improving the efficiency of the terminal device in searching for SSBs.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, the network device determines the first bandwidth based on the first subcarrier spacing of the SSB, wherein,

[0010] Optionally, when the first subcarrier spacing is 120 kHz, the first bandwidth is 100 MHz.

[0011] Optionally, when the first subcarrier spacing is 480kHz, the first bandwidth is 400MHz.

[0012] Optionally, when the first subcarrier spacing is 960kHz, the first bandwidth is 400MHz.

[0013] The size of the first bandwidth is determined based on the operating bandwidth of the terminal device and the frequency domain size occupied by the SSB. The size of the first bandwidth is adapted to the operating bandwidth of the terminal device. More than one synchronization grating can also be designed within the first bandwidth for transmitting the SSB.

[0014] In conjunction with the first aspect, in certain implementations of the first aspect, the type of the synchronization grating may include a shared spectrum synchronization grating and a non-shared spectrum synchronization grating. The shared spectrum synchronization grating represents the SSB (Security Service Bus) on the synchronization grating used for transmission to terminal devices on the shared spectrum, and the non-shared spectrum synchronization grating represents the SSB on the synchronization grating used for transmission to terminal devices on the non-shared spectrum. The shared spectrum synchronization grating corresponds to the global synchronization number of the shared spectrum, and the non-shared spectrum synchronization grating corresponds to the global synchronization number of the non-shared spectrum.

[0015] In conjunction with the first aspect, in some implementations of the first aspect, when designing the synchronization grating, the synchronization gratings for the shared spectrum and the synchronization gratings for the non-shared spectrum are configured at different frequency domain positions within the first bandwidth. Optionally, the terminal device determines the method for resolving the SSB based on whether the target SSB is found on the synchronization grating for the shared spectrum or the synchronization grating for the non-shared spectrum.

[0016] Optionally, the synchronization gratings for the shared spectrum within the first bandwidth are located at the frequency domain positions corresponding to the synchronization gratings with the smallest and / or largest global synchronization numbers within the first bandwidth, and the synchronization gratings for the non-shared spectrum are located at the frequency domain positions corresponding to the synchronization gratings with the remaining global synchronization numbers, or...

[0017] Optionally, the synchronization gratings of the non-shared spectrum within the first bandwidth are located in the frequency domain corresponding to the synchronization gratings with the smallest and / or largest global synchronization numbers, while the synchronization gratings of the shared spectrum are located in the frequency domain corresponding to the synchronization gratings with the remaining global synchronization numbers.

[0018] In conjunction with the first aspect, in some implementations of the first aspect, when designing the synchronization grating, the frequency domain positions of the synchronization grating within the first bandwidth are not distinguished between shared-spectrum and non-shared-spectrum synchronization gratings. When the network device sends an SSB to the terminal device on the synchronization grating, it may carry a first signaling message, which indicates whether the target SSB corresponds to a non-shared-spectrum or a shared-spectrum SSB. The terminal device parses the target SSB according to the first signaling message.

[0019] Secondly, a design method for a synchronization grating is provided. This method includes: a terminal device determining a frequency range corresponding to a first bandwidth; and the terminal device searching for a synchronization signal block (SSB) at the frequency domain position of the synchronization grating corresponding to the global synchronization number within the frequency range corresponding to the first bandwidth.

[0020] According to the design method of the synchronization grating provided in this application, an adaptive first bandwidth is provided under different subcarrier intervals. Within the first bandwidth, the synchronization grating is reasonably designed to transmit the synchronization signal block SSB at the frequency domain position corresponding to the synchronization grating. This enables the terminal device to access the target SSB by traversing as few SSBs as possible within its search capability range, thereby saving the power consumption of the terminal device and improving the efficiency of the terminal device in searching for SSBs.

[0021] In conjunction with the second aspect, in some implementations of the second aspect, the size of the first bandwidth is determined by the size of the first subcarrier spacing of the SSB, wherein,

[0022] Optionally, when the first subcarrier spacing is 120 kHz, the first bandwidth is 100 MHz.

[0023] Optionally, when the first subcarrier spacing is 480kHz, the first bandwidth is 400MHz.

[0024] Optionally, when the first subcarrier spacing is 960kHz, the first bandwidth is 400MHz.

[0025] The size of the first bandwidth is determined based on the operating bandwidth of the terminal device and the frequency domain size occupied by the SSB. The size of the first bandwidth is adapted to the operating bandwidth of the terminal device. More than one synchronization grating can also be designed within the first bandwidth for transmitting the SSB.

[0026] In conjunction with the first aspect, in certain implementations of the first aspect, the type of the synchronization grating may include a shared spectrum synchronization grating and a non-shared spectrum synchronization grating. The shared spectrum synchronization grating represents the SSB (Security Service Bus) on the synchronization grating used for transmission to terminal devices on the shared spectrum, and the non-shared spectrum synchronization grating represents the SSB on the synchronization grating used for transmission to terminal devices on the non-shared spectrum. The shared spectrum synchronization grating corresponds to the global synchronization number of the shared spectrum, and the non-shared spectrum synchronization grating corresponds to the global synchronization number of the non-shared spectrum.

[0027] In conjunction with the second aspect, in some implementations of the second aspect, when designing the synchronization grating, the synchronization gratings for the shared spectrum and the synchronization gratings for the non-shared spectrum are configured at different frequency domain positions within the first bandwidth. Optionally, the terminal device determines the method for resolving the SSB based on whether the target SSB is found on the synchronization grating for the shared spectrum or the synchronization grating for the non-shared spectrum.

[0028] Optionally, the synchronization gratings for the shared spectrum within the first bandwidth are located at the frequency domain positions corresponding to the synchronization gratings with the smallest and / or largest global synchronization numbers, while the synchronization gratings for the non-shared spectrum are located at the frequency domain positions corresponding to the synchronization gratings with the remaining global synchronization numbers, or...

[0029] Optionally, the synchronization gratings of the non-shared spectrum within the first bandwidth are located in the frequency domain corresponding to the synchronization gratings with the smallest and / or largest global synchronization numbers, while the synchronization gratings of the shared spectrum are located in the frequency domain corresponding to the synchronization gratings with the remaining global synchronization numbers.

[0030] In conjunction with the second aspect, in some implementations of the second aspect, when designing the synchronization grating, the frequency domain positions of the synchronization grating within the first bandwidth are not distinguished between shared and non-shared spectrum. When the network device sends an SSB to the terminal device on the synchronization grating, it may carry a first signaling message, which indicates whether the target SSB corresponds to a non-shared spectrum or a shared spectrum. The terminal device parses the target SSB according to the first signaling message.

[0031] Thirdly, a communication apparatus is provided, comprising units for performing the steps of the communication method described in the first aspect and its implementations.

[0032] In one design, the communication device is a communication chip, which may include input circuitry or interface for transmitting information or data, and output circuitry or interface for receiving information or data.

[0033] In another design, the communication device is a communication equipment (e.g., a network device), and the communication chip may include a transmitter for sending information and a receiver for receiving information or data.

[0034] Fourthly, a communication apparatus is provided, comprising units for performing the steps of the communication method described in the second aspect and its implementations.

[0035] In one design, the communication device is a communication chip, which may include input circuitry or interface for transmitting information or data, and output circuitry or interface for receiving information or data.

[0036] In another design, the communication device is a communication equipment (e.g., a terminal device), and the communication chip may include a transmitter for sending information and a receiver for receiving information or data.

[0037] Fifthly, a communication device is provided, comprising a processor and a memory for storing a computer program, the processor for calling and running the computer program from the memory, causing the communication device to perform the communication methods described in the first or second aspect and their respective implementations.

[0038] Optionally, the processor may be one or more, and the memory may be one or more.

[0039] Optionally, the memory may be integrated with the processor, or the memory may be separated from the processor.

[0040] Optionally, the communication device may also include a transmitter and a receiver.

[0041] In a sixth aspect, a computer program product is provided, the computer program product comprising: a computer program (also referred to as code or instructions), which, when the computer program is run, causes a computer to execute the communication methods in the first or second aspect and their respective implementations described above.

[0042] In a seventh aspect, a computer-readable medium is provided that stores a computer program (also referred to as code or instructions) that, when executed on a computer, causes the computer to perform the communication methods described in the first or second aspect and their respective implementations.

[0043] Eighthly, a communication system is provided, comprising: at least one device according to any one of the third aspects and one device according to any one of the fourth aspects.

[0044] A ninth aspect provides a chip system including a memory and a processor, the memory for storing a computer program and the processor for calling and running the computer program from the memory, causing a communication device equipped with the chip system to perform the communication methods described in the first or second aspect and their respective implementations.

[0045] The chip system may include input circuits or interfaces for transmitting information or data, and output circuits or interfaces for receiving information or data. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the system architecture of an embodiment of this application.

[0047] Figure 2 This is an example of a method for designing a synchronization grating according to an embodiment of this application.

[0048] Figure 3 This is a schematic diagram illustrating an example of the relationship between the synchronization signal block and the synchronization grating in an embodiment of this application.

[0049] Figure 4 This is a schematic diagram of an example of a synchronization grating with a non-shared spectrum and a synchronization grating with a shared spectrum within a first bandwidth, according to embodiments of this application.

[0050] Figure 5 This is an example of a communication device for designing a synchronization grating according to an embodiment of this application.

[0051] Figure 6 This is yet another example of a communication device for designing a synchronization grating according to an embodiment of this application. Detailed Implementation

[0052] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0053] The technical solutions of this application embodiment can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) system, 5th Generation (5G) system, or New Radio (NR), etc.

[0054] In this application, the terminal device can refer to user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user equipment. The terminal device can also be a cellular phone, cordless phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, vehicle-mounted device, wearable device, terminal device in a 5G network, or terminal device in an evolved Public Land Mobile Network (PLMN), etc. This application does not limit the scope of the terminal device to these specific types.

[0055] The network device in this application embodiment can be a device for communicating with terminal devices. The network device can be a base station (BTS) in a Global System of Mobile communication (GSM) system or Code Division Multiple Access (CDMA), a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, an evolved NodeB (eNB or eNodeB) in an LTE system, or a radio controller in a Cloud Radio Access Network (CRAN) scenario. Alternatively, the network device can be a relay station, access point, vehicle-mounted device, wearable device, or a network device in a 5G network or an evolved PLMN network, etc. The embodiments of this application are not limited to these.

[0056] Figure 1 This is a schematic diagram of the system architecture of an embodiment of this application, as shown below. Figure 1 As shown in the embodiments of this application, a communication system can be composed of a base station and multiple terminal devices. In this communication system, each terminal device can communicate with the base station. Its link environment can include uplink transmission, downlink transmission, and side-link transmission. The information transmitted in the link includes the actual transmitted data information and control information used to indicate and schedule the actual data. Any two terminal devices can also form a communication system, with its link transmission being the same as described above. The specific information interaction depends on the configuration of the network devices.

[0057] Figure 2 This is an example of a design method for a synchronization grating according to an embodiment of this application. For example... Figure 2 The method 200 includes:

[0058] S210, the network device determines the first bandwidth.

[0059] Specifically, the first bandwidth is the search bandwidth required for the terminal device to perform one cell search, and the terminal device accesses the appropriate cell through the search synchronization signal block (SSB).

[0060] Optionally, in this embodiment of the application, the frequency range of the first bandwidth is Above 52.6GHz, that is, 52.6GHz-71GHz, and the first bandwidth is a segment of 52.6GHz-71GHz.

[0061] It should be understood that, in this embodiment of the application, the design of a sync raster is carried out using the Above 52.6 GHz frequency band as an example. When the frequency range is higher than the frequency band of the example of this embodiment of the application, the method of this embodiment of the application can also be used to design a sync raster. This embodiment of the application does not limit this.

[0062] Optionally, the network device determines the size of the first bandwidth based on the first subcarrier spacing of the SSB.

[0063] In some embodiments, the first subcarrier spacing of the SSB is 120 kHz, and the network device determines that the first bandwidth can be 100 MHz.

[0064] In some embodiments, the first subcarrier spacing of the SSB is 480 kHz, and the network device determines that the first bandwidth can be 400 MHz.

[0065] In some embodiments, the subcarrier spacing of the SSB is 960 kHz, and the network device determines that the first bandwidth can be 400 MHz.

[0066] It should be noted that the network device can determine the size of the first bandwidth based on the size of the SSB corresponding to the first subcarrier interval and the bandwidth supported by the terminal device. The size of the first bandwidth should ensure that it can adapt to the capabilities of the terminal device, and also enable the terminal device to traverse fewer frequency domain positions when searching for SSBs, thereby shortening the time required for cell search. It should also ensure that there is more than one synchronization grating within the first bandwidth.

[0067] S220, network devices determine the global synchronization number within the frequency range corresponding to the first bandwidth.

[0068] It should be noted that one global synchronization number corresponds to one synchronization grating, and one synchronization grating corresponds to one SSB. Network devices transmit SSBs at the frequency domain location of the synchronization grating corresponding to the global synchronization number. Correspondingly, terminal devices receive SSBs at the location of the synchronization grating. It should also be noted that the terminal device searches for the target SSB within the frequency range corresponding to the first bandwidth, and when the target SSB is found, it receives it.

[0069] It should be noted that the network device determines the frequency domain position of the synchronization grating within the first bandwidth frequency range according to the following formula:

[0070] f = 24250.8MHz + AMHz × N,

[0071] Where f represents the frequency corresponding to the global synchronization number, A represents the granularity of the synchronization grating, and N+22256 represents the global synchronization number corresponding to frequency f, where N is a positive integer greater than or equal to 0. It should be understood that one frequency corresponds to one global synchronization number.

[0072] In one possible implementation, the network device determines the Global Synchronization Number (GSSN) within a first bandwidth according to a first rule. The network device determines that SSBs (Security Switching Arrays) for terminal devices located in the shared spectrum are transmitted on synchronization gratings corresponding to certain GSSNs within the frequency range of the first bandwidth. The synchronization gratings for transmitting SSBs for terminal devices located in the shared spectrum are shared spectrum synchronization gratings, and their corresponding GSSNs are shared spectrum GSSNs. Alternatively, the network device determines that SSBs for terminal devices located in the non-shared spectrum are transmitted on synchronization gratings corresponding to certain GSSNs. The synchronization gratings for transmitting SSBs for terminal devices located in the non-shared spectrum are non-shared spectrum synchronization gratings, and their corresponding GSSNs are non-shared spectrum GSSNs. In one possible implementation, the shared spectrum synchronization gratings are the synchronization gratings with the smallest and / or largest numbers within the first bandwidth, and the others are synchronization gratings for the non-shared spectrum. Or, in one possible implementation, the non-shared spectrum synchronization gratings are the synchronization gratings with the smallest and / or largest numbers within the first bandwidth, and the others are shared spectrum synchronization gratings.

[0073] In some embodiments, according to the first rule described above, when the subcarrier spacing is 120 kHz, the network device determines the first bandwidth to be 100 MHz. In the Above 52.6 GHz band, the global synchronization numbers determined according to the first formula and the first bandwidth are shown in Table 1 below, where the synchronization grating granularity is 17.28 MHz. Table 1 uses the synchronization gratings of the shared spectrum as the smallest and largest numbered synchronization gratings within the first bandwidth, and the others as synchronization gratings of the non-shared spectrum as examples. Conversely, in other cases, only the global synchronization numbers of the shared spectrum in the table need to be replaced with the global synchronization numbers of the non-shared spectrum, and vice versa. Table 2 uses the synchronization gratings of the shared spectrum as the smallest numbered synchronization grating within the first bandwidth, and the others as gratings of the non-shared spectrum as examples. Conversely, only the global synchronization numbers of the shared spectrum in the table need to be replaced with the global synchronization numbers of the non-shared spectrum, and vice versa. Table 3 uses the synchronization gratings of the shared spectrum as the synchronization gratings with the largest number in the first bandwidth, and the others as gratings of the non-shared spectrum as examples. In the opposite case, simply replace the global synchronization number of the shared spectrum in the table with the global synchronization number of the non-shared spectrum, and replace the global synchronization number of the non-shared spectrum with the global synchronization number of the shared spectrum.

[0074] It should be noted that the utilization rate of this first bandwidth cannot reach 100%, for example, it can only reach 95.04%. Within 100MHz, the position of the largest synchronization grating in the frequency domain is less than or equal to the 99.88MHz - 14.4MHz - 2.42MHz = 83.06MHz within this bandwidth, and the position of the smallest synchronization grating in the frequency domain is greater than or equal to the 14.4MHz + 2.42MHz = 16.82MHz within 100MHz. It should also be noted that in some embodiments, within the first bandwidth, a complete SSB can be placed for the synchronization grating corresponding to each global synchronization number. This application uses this as an example, but is not limited to this.

[0075] It should be noted that when the first subcarrier spacing is 120kHz, the corresponding SSB occupies a bandwidth of 28.8MHz in the frequency domain (i.e., 120kHz * 12 * 20). 12 indicates that a resource block (RB) contains 12 subcarriers, and 20 indicates that an SSB occupies 20 RBs. It should also be noted that in this embodiment, the synchronization grating is located in the middle of the SSB. Therefore, the SSB occupies 14.4MHz above and below the synchronization grating, as shown in the schematic diagram below. Figure 3 As shown. It should be noted that, corresponding to the formula above, the frequency in the formula for the synchronization grating corresponds to the center frequency of the SSB placed on the synchronization grating.

[0076] It should be noted that since the 52.6GHz-57GHz spectrum is a non-shared spectrum for all countries, only the synchronous grating design method in the 57GHz-71GHz band is given here.

[0077] Table 1 shows the global synchronization numbers for shared and non-shared spectrum in the frequency band 57GHz-71GHz, with a synchronization grating granularity of 17.28MHz and an SSB subcarrier spacing of 120kHz.

[0078]

[0079]

[0080]

[0081]

[0082]

[0083] Table 2 shows the global synchronization numbers for shared and non-shared spectrum in the frequency band 57GHz-71GHz, with a synchronization grating granularity of 17.28MHz and an SSB subcarrier spacing of 120kHz.

[0084]

[0085]

[0086]

[0087]

[0088]

[0089]

[0090] Table 3 shows the global synchronization numbers for shared and non-shared spectrum in the frequency band 57GHz-71GHz, with a synchronization grating granularity of 17.28MHz and an SSB subcarrier spacing of 120kHz.

[0091]

[0092]

[0093]

[0094]

[0095]

[0096]

[0097] As an example, and not a limitation, the frequency range corresponding to the first bandwidth is 63.9 GHz to 64.0 GHz. According to the above design, the synchronization gratings with the largest and smallest global synchronization numbers within the first bandwidth are the global synchronization numbers for the shared spectrum, while the others are the global synchronization numbers for the non-shared spectrum. Figure 4 The diagram illustrates an example of this design method. Terminal devices sharing the spectrum transmit their SSBs on synchronization gratings with global synchronization numbers 24668 and 24671, while terminal devices not sharing the spectrum transmit their SSBs on synchronization gratings with global synchronization numbers 24669 and 24670. 24667 is a synchronization grating that does not meet the conditions, meaning it cannot correspond to a complete SSB within the frequency range of the first bandwidth. It should be noted that the opposite is also possible: the synchronization grating with the largest global synchronization number within the first bandwidth is a synchronization grating for the shared spectrum; or the synchronization grating with the smallest global synchronization number within the first bandwidth is a synchronization grating for the shared spectrum, and the others are synchronization gratings for the non-shared spectrum, or vice versa. It should be understood that the network device only needs to specify a placement rule and publish this rule to the terminal device, enabling the terminal device, in the method provided in this embodiment, to determine whether the searched SSB corresponds to a non-shared spectrum or a shared spectrum SSB.

[0098] Table 4 below shows the synchronization grating design when the synchronization grating granularity is 34.56MHz. In this table, the global synchronization number for the shared spectrum is the smallest global synchronization number within the first bandwidth, and the global synchronization number for the non-shared spectrum is any other global synchronization number within the first bandwidth. It should be noted that, alternatively, the global synchronization number for the non-shared spectrum can be the smallest global synchronization number within the first bandwidth, and the global synchronization number for the shared spectrum can be any other global synchronization number within the first bandwidth.

[0099] It should be noted that when the granularity of the synchronization grating is doubled, the global synchronization number remains unchanged, and the search granularity changes from searching once for each number to searching once for every other number. In one example, as shown in Table 5, it should be understood that when the first bandwidth corresponds to 57.0GHz-57.1GHz, all global synchronization numbers can also be 24154 and 24156, as long as they satisfy the first formula. Among them, the global synchronization number for shared spectrum can be 24154, and the global synchronization number for non-shared spectrum can be 24156, or vice versa. This application does not limit this.

[0100] Table 4 shows the global synchronization numbers for non-shared and shared spectrum in the 57GHz-71GHz frequency band, with a synchronization grating granularity of 34.56MHz and an SSB subcarrier spacing of 120kHz.

[0101]

[0102]

[0103]

[0104]

[0105]

[0106]

[0107] Table 5 shows the global synchronization numbering for non-shared and shared spectrum in the frequency band 57GHz-71GHz, with a synchronization grating granularity of 34.56MHz and an SSB subcarrier spacing of 120kHz.

[0108]

[0109]

[0110]

[0111]

[0112]

[0113]

[0114] It should be noted that Tables 4 and 5 above can be interpreted as either searching for SSBs with a 240kHz subcarrier spacing at a synchronization grating granularity of 17.28MHz, or searching for SSBs with a 120kHz subcarrier spacing at a synchronization grating granularity of 34.56MHz.

[0115] In some embodiments, according to the first rule described above, when the subcarrier spacing is 480kHz, the network device determines the first bandwidth to be 400MHz. In the Above 52.6GHz band, the global synchronization numbers determined according to the first formula and the first bandwidth are shown in Table 6 below, where the synchronization grating granularity is 17.28MHz. Table 6 uses the synchronization gratings of the shared spectrum as the smallest and largest numbered synchronization gratings within the first bandwidth, and the others as synchronization gratings of the non-shared spectrum as examples. Conversely, in the opposite case, only the global synchronization numbers of the shared spectrum in the table need to be replaced with the global synchronization numbers of the non-shared spectrum, and vice versa. It should be noted that, alternatively, the synchronization gratings of the shared spectrum can also be the smallest numbered synchronization grating within the first bandwidth, and the others as synchronization gratings of the non-shared spectrum, and vice versa. It should be noted that, as an example, the synchronization grating for the shared spectrum can be the synchronization grating with the largest number within the first bandwidth, and the others can be synchronization gratings for the non-shared spectrum. In the opposite case, simply replace the global synchronization number of the shared spectrum in the table with the global synchronization number of the non-shared spectrum, and replace the global synchronization number of the non-shared spectrum with the global synchronization number of the shared spectrum.

[0116] It should be noted that the utilization rate of this first bandwidth cannot reach 100%; for example, it can only reach 95.04%. Within 400MHz, the position of the frequency domain maximum synchronization grating is less than or equal to the 332.42MHz position within this bandwidth, and the position of the frequency domain minimum synchronization grating is greater than or equal to the 67.46MHz position within 400MHz. It should also be noted that in some embodiments, within the first bandwidth, a complete SSB can be placed for each global synchronization number corresponding to the synchronization grating; this application uses this as an example but is not limited thereto.

[0117] It should be noted that when the first subcarrier spacing is 480kHz, the corresponding SSB occupies a bandwidth of 115.2MHz in the frequency domain (i.e., 480kHz * 12 * 20), where 12 indicates that a resource block (RB) contains 12 subcarriers, and 20 indicates that an SSB occupies 20 RBs. It should also be noted that in this embodiment, the synchronization grating is located in the middle of the SSB. Therefore, the SSB occupies 57.6MHz above and below the synchronization grating.

[0118] It should be noted that since the 52.6GHz-57GHz spectrum is a non-shared spectrum for all countries, only the synchronous grating design method in the 57GHz-71GHz band is given here.

[0119] Table 6 shows the global synchronization numbers for shared and non-shared spectrum in the frequency band 57GHz-66GHz, with a synchronization grating granularity of 17.28MHz and an SSB subcarrier spacing of 480kHz.

[0120]

[0121]

[0122]

[0123]

[0124]

[0125]

[0126] Specifically, for SSBs operating on shared spectrum, they can be placed on synchronization gratings corresponding to some or all of the global synchronization numbers in Table 6 above; for SSBs operating on non-shared spectrum, they can be placed on synchronization gratings corresponding to some or all of the global synchronization numbers in Table 6 above.

[0127] In one possible implementation, within the first bandwidth, the number of global synchronization numbers for the available shared spectrum can be two, located at the largest and smallest global synchronization numbers within the first bandwidth. The number of global synchronization numbers for the non-shared spectrum can also be two. Specifically, the global synchronization number of the non-shared spectrum located at a lower frequency position differs from the global synchronization number of the shared spectrum located at a lower frequency position by an interval of N1, where N1 can be equal to 3 or 4; the global synchronization number of the non-shared spectrum located at a higher frequency position differs from the global synchronization number of the shared spectrum located at a higher frequency position by an interval of N2, where N2 can be equal to 3 or 4; the interval N3 between the two global synchronization numbers in the non-shared spectrum can differ by 5 or 3. For example, for the first bandwidth of 70.4 GHz to 70.8 GHz, the global synchronization numbers used for the shared spectrum in the synchronization grating can be 24931 and 24945, and the global synchronization numbers used for the non-shared spectrum in the synchronization grating can be 24936 and 24940. The values ​​of N1, N2, and N3 are not specifically limited in this application.

[0128] In one possible implementation, within the first bandwidth, the number of global synchronization numbers for the available shared spectrum can be 2, located at the largest and smallest global synchronization numbers within the first bandwidth. The number of global synchronization numbers for the non-shared spectrum can be 1. The interval N4 between the global synchronization number of the non-shared spectrum and the global synchronization numbers at lower and higher frequency positions in the shared spectrum can differ by any number from 5 to 7. For example, for the first bandwidth of 70.4 GHz to 70.8 GHz, the global synchronization numbers for the shared spectrum in the synchronization grating are 24931 and 24945, N4 = 6, and the global synchronization number for the non-shared spectrum in the synchronization grating is 24938. The value of N4 is not particularly limited in this application.

[0129] In some embodiments, according to the first rule described above, when the subcarrier spacing is 960 kHz, the network device determines the first bandwidth to be 400 MHz. In the Above 52.6 GHz band, the global synchronization numbers determined according to the first formula and the first bandwidth are shown in Table 7 below, where the synchronization grating granularity is 17.28. Table 7 uses the synchronization gratings of the shared spectrum as the smallest and largest numbered synchronization gratings within the first bandwidth, and the others as synchronization gratings of the non-shared spectrum as examples. Conversely, in other cases, only the global synchronization numbers of the shared spectrum in the table need to be replaced with the global synchronization numbers of the non-shared spectrum, and vice versa. Alternatively, the synchronization gratings of the shared spectrum can be used as the smallest numbered synchronization grating within the first bandwidth, and the others as synchronization gratings of the non-shared spectrum, and vice versa. One example is that the synchronization grating of the shared spectrum is the synchronization grating with the largest number in the first bandwidth, and the others are synchronization gratings of the non-shared spectrum. In the opposite case, simply replace the global synchronization number of the shared spectrum in the table with the global synchronization number of the non-shared spectrum, and replace the global synchronization number of the non-shared spectrum with the global synchronization number of the shared spectrum.

[0130] It should be noted that the utilization rate of this first bandwidth cannot reach 100%; for example, it can only reach 95.04%. Within 400MHz, the position of the largest synchronization grating in the frequency domain is less than or equal to the 274.82MHz position within this bandwidth, and the position of the smallest synchronization grating in the frequency domain is greater than or equal to the 125.06MHz position within 400MHz. It should also be noted that in some embodiments, within the first bandwidth, a complete SSB can be placed for each global synchronization number corresponding to the synchronization grating; this application uses this as an example but is not limited thereto.

[0131] It should be noted that when the first subcarrier spacing is 960kHz, the corresponding SSB occupies a bandwidth of 230.4MHz in the frequency domain (i.e., 960kHz * 12 * 20), where 12 indicates that a resource block (RB) contains 12 subcarriers, and 20 indicates that an SSB occupies 20 RBs. It should also be noted that in this embodiment, the synchronization grating is located in the middle of the SSB. Therefore, the SSB occupies 57.6MHz above and below the synchronization grating.

[0132] It should be noted that since the 52.6GHz-57GHz spectrum is a shared spectrum for all countries, only the design method of the synchronization grating in the 57GHz-71GHz band is given here.

[0133] Table 7 shows the global synchronization numbers for shared and non-shared spectrum in the frequency band 57GHz-71GHz, with a synchronization grating granularity of 17.28MHz and an SSB subcarrier spacing of 960kHz.

[0134]

[0135]

[0136]

[0137]

[0138]

[0139] Specifically, for SSBs operating on shared spectrum, they can be placed on the global synchronization number of some or all of the shared spectrum in Table 7 above; for SSBs operating on non-shared spectrum, they can be placed on the global synchronization number of some or all of the shared spectrum in Table 7 above.

[0140] In one possible implementation, within the first bandwidth, the number of global synchronization numbers for the available shared spectrum can be 2, located at the largest and smallest global synchronization numbers within the first bandwidth. The number of global synchronization numbers for the non-shared spectrum can be 1. The interval N5 between the global synchronization number of the non-shared spectrum and the global synchronization numbers at lower and higher frequency positions in the shared spectrum can differ by any number between 2 and 3. For example, for the first bandwidth of 70.4 GHz to 70.8 GHz, the global synchronization numbers for the shared spectrum in the synchronization grating are 24934 and 24942, N5 = 3, and the global synchronization number for the non-shared spectrum in the synchronization grating is 24938. The specific value of N5 is not limited in this application.

[0141] In some embodiments, the first rule is that when designing synchronization gratings, network devices do not distinguish between certain gratings specifically used for transmitting SSBs corresponding to terminal devices with shared spectrum, nor do they distinguish between certain gratings specifically used for transmitting SSBs corresponding to terminal devices with non-shared spectrum. When sending an SSB to a terminal device, the network device carries a first signaling instruction indicating whether the terminal device's current target SSB is a non-shared spectrum SSB or a shared spectrum SSB. This corresponds to the fact that Tables 1-7 above do not distinguish between global synchronization numbers for non-shared spectrum and global synchronization numbers for shared spectrum.

[0142] S230, the network device sends an SSB to the terminal device according to the synchronization grating type.

[0143] In one possible implementation, the network device determines that the frequency range corresponding to the first bandwidth is the shared spectrum corresponding to the terminal device, and the network device sends an SSB to the terminal device on the synchronization grating of the shared spectrum. Alternatively, the network device determines that the frequency range corresponding to the first bandwidth is the non-shared spectrum corresponding to the terminal device, and the network device sends an SSB to the terminal device on the synchronization grating of the non-shared spectrum.

[0144] In one possible implementation, the network device determines that the frequency range corresponding to the first bandwidth is either a shared spectrum or a non-shared spectrum corresponding to the terminal device. The network device sends an SSB to the terminal device, the SSB including a first signaling, which is used to indicate the parsing method of the SSB, or to indicate that the SSB is a non-shared spectrum SSB or a shared spectrum SSB.

[0145] S240, the terminal device searches for the target SSB within the frequency range corresponding to the first bandwidth.

[0146] The terminal device searches for SSBs within the frequency range corresponding to the first bandwidth.

[0147] In one possible implementation, if the global synchronization number of the synchronization grating corresponding to the searched target SSB is a global synchronization number for a non-shared spectrum, the terminal device resolves the SSB according to the method corresponding to the non-shared spectrum. If the global synchronization number of the synchronization grating corresponding to the searched target SSB is a global synchronization number for a shared spectrum, the terminal device resolves the SSB according to the method corresponding to the shared spectrum.

[0148] In one possible implementation, the target SSB searched by the terminal device includes a first signaling message, and the terminal device parses the SSB based on the content of the first signaling message.

[0149] The method for designing a synchronization grating provided in this application provides an adaptive first bandwidth under different subcarrier intervals. Within the first bandwidth, a synchronization grating is reasonably designed to place synchronization signal blocks (SSBs), enabling the terminal device to access the target SSB by traversing as few SSBs as possible within its search capability range. This saves the power consumption of the terminal device and improves the efficiency of the terminal device in searching for SSBs.

[0150] Figure 5 This is a schematic diagram of a communication device 500 according to an embodiment of this application. Each unit in the communication device 500 can be implemented by software.

[0151] In some embodiments, the communication device 500 may be a network device as described in method embodiment 200 above, or it may be a chip used to implement the functions of the network device in the method embodiment above. It should be understood that the communication device 500 may correspond to the steps of the network device in method 200 of this application embodiment. The communication device 500 includes:

[0152] The transceiver unit 510 is used to send SSBs to the terminal device.

[0153] Processing unit 520 is used to determine the first bandwidth.

[0154] Specifically, the first bandwidth is the search bandwidth required for the terminal device to perform one cell search, and the terminal device accesses the appropriate cell through the search synchronization signal block (SSB).

[0155] Optionally, in this embodiment of the application, the frequency range of the first bandwidth is Above 52.6GHz, that is, 52.6GHz-71GHz, and the first bandwidth is a segment of 52.6GHz-71GHz.

[0156] It should be understood that, in this embodiment of the application, the design of a sync raster is carried out using the Above 52.6 GHz frequency band as an example. When the frequency range is higher than the frequency band of the example of this embodiment of the application, the method of this embodiment of the application can also be used to design a sync raster. This embodiment of the application does not limit this.

[0157] Optionally, the processing unit 520 determines the size of the first bandwidth based on the first subcarrier spacing of the SSB.

[0158] In some embodiments, the first subcarrier spacing of the SSB is 120 kHz, and the processing unit 520 determines that the first bandwidth can be 100 MHz.

[0159] In some embodiments, the first subcarrier spacing of the SSB is 480 kHz, and the processing unit 520 determines that the first bandwidth can be 400 MHz.

[0160] In some embodiments, the subcarrier spacing of the SSB is 960 kHz, and the processing unit 520 determines that the first bandwidth can be 400 MHz.

[0161] It should be noted that the processing unit 520 can determine the size of the first bandwidth based on the size of the SSB corresponding to the first subcarrier spacing and the bandwidth supported by the terminal device. The size of the first bandwidth should ensure that it can adapt to the capabilities of the terminal device, and also enable the terminal device to traverse fewer frequency domain positions when searching for SSBs, thereby shortening the time required for cell search. It should also ensure that there is more than one synchronization grating within the first bandwidth.

[0162] The processing unit 520 is also used to determine the global synchronization number within the frequency range corresponding to the first bandwidth.

[0163] It should be noted that one global synchronization number corresponds to one synchronization grating, and one synchronization grating corresponds to one SSB. The transceiver unit 510 transmits the SSB at the frequency domain position of the synchronization grating corresponding to the global synchronization number. Correspondingly, the terminal device receives the SSB at the position of the synchronization grating. It should also be noted that the terminal device searches for the target SSB within the frequency range corresponding to the first bandwidth, and receives the target SSB when it is found.

[0164] It should be noted that the processing unit 520 determines the frequency domain position of the synchronization grating within the frequency range of the first bandwidth according to the following formula:

[0165] f = 24250.8MHz + AMHz × N,

[0166] Where f represents the frequency corresponding to the global synchronization number, A represents the granularity of the synchronization grating, and N+22256 represents the global synchronization number, where N is a positive integer greater than or equal to 0. It should be understood that one frequency corresponds to one global synchronization number.

[0167] In one possible implementation, processing unit 520 determines the global synchronization number within the first bandwidth according to a first rule. Processing unit 520 determines that SSBs for terminal devices located in the shared spectrum are transmitted on synchronization gratings corresponding to certain global synchronization numbers within the frequency range of the first bandwidth. The synchronization gratings for transmitting SSBs for terminal devices located in the shared spectrum are shared spectrum synchronization gratings, and their corresponding global synchronization numbers are shared spectrum global synchronization numbers. SSBs for terminal devices located in the non-shared spectrum are transmitted on synchronization gratings corresponding to certain global synchronization numbers. The synchronization gratings for transmitting SSBs for terminal devices located in the non-shared spectrum are non-shared spectrum synchronization gratings, and their corresponding global synchronization numbers are non-shared spectrum global synchronization numbers. In one possible implementation, the shared spectrum synchronization gratings are the synchronization gratings with the smallest and / or largest numbers within the first bandwidth, and the others are synchronization gratings for the non-shared spectrum. Alternatively, in one possible implementation, the non-shared spectrum synchronization gratings are the synchronization gratings with the smallest and / or largest numbers within the first bandwidth, and the others are synchronization gratings for the shared spectrum.

[0168] In some embodiments, according to the first rule described above, when the subcarrier spacing is 120 kHz, the processing unit 520 determines the first bandwidth to be 100 MHz. In the Above 52.6 GHz band, the global synchronization numbers determined according to the first formula and the first bandwidth are shown in Table 1 below, where the synchronization grating granularity is 17.28 MHz. Table 1 uses shared spectrum synchronization gratings as examples, with the smallest and largest numbers within the first bandwidth, and the others being non-shared spectrum synchronization gratings. Conversely, in other cases, only the shared spectrum global synchronization numbers in the table need to be replaced with the non-shared spectrum global synchronization numbers, and the non-shared spectrum global synchronization numbers need to be replaced with the shared spectrum global synchronization numbers. Table 2 uses shared spectrum synchronization gratings as examples, with the smallest numbers within the first bandwidth, and the others being non-shared spectrum synchronization gratings. Conversely, only the shared spectrum global synchronization numbers in the table need to be replaced with the non-shared spectrum global synchronization numbers, and the non-shared spectrum global synchronization numbers need to be replaced with the shared spectrum global synchronization numbers. Table 3 uses the synchronization gratings of the shared spectrum as the synchronization gratings with the largest number in the first bandwidth, and the others as synchronization gratings of the non-shared spectrum as examples. In the opposite case, simply replace the global synchronization number of the shared spectrum in the table with the global synchronization number of the non-shared spectrum, and replace the global synchronization number of the non-shared spectrum with the global synchronization number of the shared spectrum.

[0169] It should be noted that the utilization rate of this first bandwidth cannot reach 100%, for example, it can only reach 95.04%. Within 100MHz, the position of the largest synchronization grating in the frequency domain is less than or equal to the 99.88MHz - 14.4MHz - 2.42MHz = 83.06MHz within this bandwidth, and the position of the smallest synchronization grating in the frequency domain is greater than or equal to the 14.4MHz + 2.42MHz = 16.82MHz within 100MHz. It should also be noted that in some embodiments, within the first bandwidth, a complete SSB can be placed for the synchronization grating corresponding to each global synchronization number. This application uses this as an example, but is not limited to this.

[0170] It should be noted that when the first subcarrier spacing is 120kHz, the corresponding SSB occupies a bandwidth of 28.8MHz in the frequency domain (i.e., 120kHz * 12 * 20). 12 indicates that a resource block (RB) contains 12 subcarriers, and 20 indicates that an SSB occupies 20 RBs. It should also be noted that in this embodiment, the synchronization grating is located in the middle of the SSB. Therefore, the SSB occupies 14.4MHz above and below the synchronization grating, as shown in the schematic diagram below. Figure 3 As shown. It should be noted that, corresponding to the formula above, the frequency in the formula for the synchronization grating corresponds to the center frequency of the SSB placed on the synchronization grating.

[0171] It should be noted that since the 52.6GHz-57GHz spectrum is a shared spectrum for all countries, only the design method of the synchronization grating in the 57GHz-71GHz band is given here.

[0172] As an example, and not a limitation, the frequency range corresponding to the first bandwidth is 63.9 GHz to 64.0 GHz. According to the above design, the synchronization gratings with the largest and smallest global synchronization numbers within the first bandwidth are the global synchronization numbers for the shared spectrum, while the others are the global synchronization numbers for the non-shared spectrum. Figure 4 The diagram illustrates an example of this design approach. Shared spectrum SSBs are located on global synchronization numbers 24668 and 24671, while non-shared spectrum SSBs are located on global synchronization numbers 24669 and 24670. 24667 is a synchronization grating that does not meet the conditions, meaning it cannot correspond to a complete SSB within the frequency range of the first bandwidth. It should be noted that the opposite is also possible: the synchronization grating with the largest global synchronization number within the first bandwidth is a shared spectrum synchronization grating; or the synchronization grating with the smallest global synchronization number within the first bandwidth is a shared spectrum synchronization grating, and the others are non-shared spectrum synchronization gratings, or vice versa. It should be understood that the processing unit 520 only needs to specify a placement rule and publish this rule to the terminal device, enabling the terminal device to determine whether the searched SSB is of non-shared or shared spectrum in the method provided in this embodiment.

[0173] Tables 4 and 5 show the sync grating design when the sync grating granularity is 34.56MHz.

[0174] It should be noted that Tables 4 and 5 above can be interpreted as searching for SSBs with a 240kHz subcarrier spacing at a synchronization grating granularity of 17.28MHz, or as searching for SSBs with a synchronization grating granularity of 34.56MHz.

[0175] In some embodiments, according to the first rule described above, when the subcarrier spacing is 480 kHz, the processing unit 520 determines the first bandwidth to be 400 MHz. In the Above 52.6 GHz band, the global synchronization numbers determined according to the first formula and the first bandwidth are shown in Table 6, where the synchronization grating granularity is 17.28 MHz. Table 6 uses the synchronization gratings of the shared spectrum as the smallest and largest numbered synchronization gratings within the first bandwidth, and the others as synchronization gratings of the non-shared spectrum as examples. Conversely, in other cases, only the global synchronization numbers of the shared spectrum in the table need to be replaced with the global synchronization numbers of the non-shared spectrum, and vice versa. Alternatively, the synchronization gratings of the shared spectrum can be used as the smallest numbered synchronization grating within the first bandwidth, and the others as synchronization gratings of the non-shared spectrum, and vice versa. In this example, the synchronization grating with the highest number within the first bandwidth can be used as the example, with the others being synchronization gratings with non-shared spectrum. Conversely, in the opposite case, simply replace the global synchronization number of the shared spectrum in the table with the global synchronization number of the non-shared spectrum, and vice versa. This application does not limit this.

[0176] It should be noted that the utilization rate of this first bandwidth cannot reach 100%; for example, it can only reach 95.04%. Within 400MHz, the position of the frequency domain maximum synchronization grating is less than or equal to the 332.42MHz position within this bandwidth, and the position of the frequency domain minimum synchronization grating is greater than or equal to the 67.46MHz position within 400MHz. It should also be noted that in some embodiments, within the first bandwidth, a complete SSB can be placed for each global synchronization number corresponding to the synchronization grating; this application uses this as an example but is not limited thereto.

[0177] It should be noted that when the first subcarrier spacing is 480kHz, the corresponding SSB occupies a bandwidth of 115.2MHz in the frequency domain (i.e., 480kHz * 12 * 20), where 12 indicates that a resource block (RB) contains 12 subcarriers, and 20 indicates that an SSB occupies 20 RBs. It should also be noted that in this embodiment, the synchronization grating is located in the middle of the SSB. Therefore, the SSB occupies 57.6MHz above and below the synchronization grating.

[0178] It should be noted that since the 52.6GHz-57GHz spectrum is non-shared spectrum for all countries, only the synchronization grating design method within the 57GHz-71GHz band is given here. The global synchronization number for shared spectrum can also be the same as that for non-shared spectrum, and vice versa.

[0179] In some embodiments, according to the first rule described above, when the subcarrier spacing is 960 kHz, the processing unit 520 determines the first bandwidth to be 400 MHz. In the Above 52.6 GHz band, the global synchronization numbers determined according to the first formula and the first bandwidth are shown in Table 7, where the synchronization grating granularity is 17.28. Table 7 uses the synchronization gratings of the shared spectrum as the smallest and largest numbered synchronization gratings within the first bandwidth, and the others as synchronization gratings of the non-shared spectrum as examples. Conversely, in other cases, only the global synchronization numbers of the shared spectrum in the table need to be replaced with the global synchronization numbers of the non-shared spectrum, and vice versa. Alternatively, the synchronization gratings of the shared spectrum can be used as the smallest numbered synchronization grating within the first bandwidth, and the others as synchronization gratings of the non-shared spectrum, and vice versa. Alternatively, one could use the synchronization grating of the shared spectrum as the synchronization grating with the highest number within the first bandwidth, and the others as synchronization gratings of the non-shared spectrum, as an example. Conversely, in the opposite case, simply replace the global synchronization number of the shared spectrum in the table with the global synchronization number of the non-shared spectrum, and vice versa. This application does not impose any limitations on this.

[0180] It should be noted that the utilization rate of this first bandwidth cannot reach 100%; for example, it can only reach 95.04%. Within 400MHz, the position of the largest synchronization grating in the frequency domain is less than or equal to the 274.82MHz position within this bandwidth, and the position of the smallest synchronization grating in the frequency domain is greater than or equal to the 125.06MHz position within 400MHz. It should also be noted that in some embodiments, within the first bandwidth, a complete SSB can be placed for each global synchronization number corresponding to the synchronization grating; this application uses this as an example but is not limited thereto.

[0181] It should be noted that when the first subcarrier spacing is 960kHz, the corresponding SSB occupies a bandwidth of 230.4MHz in the frequency domain (i.e., 960kHz * 12 * 20), where 12 indicates that a resource block (RB) contains 12 subcarriers, and 20 indicates that an SSB occupies 20 RBs. It should also be noted that in this embodiment, the synchronization grating is located in the middle of the SSB. Therefore, the SSB occupies 57.6MHz above and below the synchronization grating.

[0182] It should be noted that since the 52.6GHz-57GHz spectrum is a shared spectrum for all countries, only the design method of the synchronization grating in the 57GHz-71GHz band is given here.

[0183] In some embodiments, the first rule is that when designing the synchronization grating, the processing unit 520 does not distinguish between certain gratings specifically used for transmitting SSBs corresponding to terminal devices with shared spectrum, nor does it distinguish between certain gratings specifically used for transmitting SSBs corresponding to terminal devices with non-shared spectrum. When sending an SSB to the terminal device, the transceiver unit 510 carries a first signaling instruction indicating whether the terminal device's current target SSB is a shared spectrum SSB or a non-shared spectrum SSB.

[0184] The transceiver unit 510 is also used to send SSBs to the terminal device according to the type of synchronization grating.

[0185] In one possible implementation, processing unit 520 determines that the frequency range corresponding to the first bandwidth is the shared spectrum corresponding to the terminal device, and transceiver unit 510 transmits an SSB to the terminal device on the synchronization grating of the shared spectrum. Alternatively, processing unit 520 determines that the frequency range corresponding to the first bandwidth is the non-shared spectrum corresponding to the terminal device, and transceiver unit 510 transmits an SSB to the terminal device on the synchronization grating of the non-shared spectrum.

[0186] In one possible implementation, the processing unit 520 determines that the frequency range corresponding to the first bandwidth is a shared spectrum or a non-shared spectrum corresponding to the terminal device, and the transceiver unit 510 sends an SSB to the terminal device. The SSB includes a first signaling, which is used to indicate the parsing method of the SSB, or to indicate that the SSB is an SSB of a non-shared spectrum or an SSB of a shared spectrum.

[0187] In some embodiments, the communication device 500 may be the terminal device in the method embodiment 200 above, or it may be a chip for implementing the functions of the terminal device in the method embodiment above. It should be understood that the communication device 500 may correspond to the steps of the terminal device in the method 200 of this application embodiment. The communication device 500 includes:

[0188] Transceiver unit 510: Used to receive SSB.

[0189] Processing unit 520: Used to parse SSB.

[0190] Specifically, the first bandwidth is the search bandwidth required for the processing unit 520 to perform a cell search. The processing unit 520 accesses a suitable cell through the search synchronization signal block (SSB).

[0191] Optionally, in this embodiment of the application, the frequency range of the first bandwidth is Above 52.6GHz, that is, 52.6GHz-71GHz, and the first bandwidth is a segment of 52.6GHz-71GHz.

[0192] It should be understood that, in this embodiment of the application, the design of a sync raster is carried out using the Above 52.6 GHz frequency band as an example. When the frequency range is higher than the frequency band of the example of this embodiment of the application, the method of this embodiment of the application can also be used to design a sync raster. This embodiment of the application does not limit this.

[0193] Optionally, the network device determines the size of the first bandwidth based on the first subcarrier spacing of the SSB.

[0194] In some embodiments, the first subcarrier spacing of the SSB is 120 kHz, and the network device determines that the first bandwidth can be 100 MHz.

[0195] In some embodiments, the first subcarrier spacing of the SSB is 480 kHz, and the network device determines that the first bandwidth can be 400 MHz.

[0196] In some embodiments, the subcarrier spacing of the SSB is 960 kHz, and the network device determines that the first bandwidth can be 400 MHz.

[0197] It should be noted that the network device can determine the size of the first bandwidth based on the size of the SSB corresponding to the first subcarrier interval and the bandwidth supported by the processing unit 520. The size of the first bandwidth should be able to adapt to the capabilities of the processing unit 520, and should also enable the processing unit 520 to traverse fewer frequency domain positions when searching for SSBs, thereby shortening the time required for cell search. Furthermore, the first bandwidth should contain more than one synchronization grating.

[0198] It should be noted that one global synchronization number corresponds to one synchronization grating, and one synchronization grating corresponds to one SSB. The network device transmits the SSB at the frequency domain position of the synchronization grating corresponding to the global synchronization number. Correspondingly, the transceiver unit 510 receives the SSB at the position of the synchronization grating. It should also be noted that the processing unit 520 searches for the target SSB within the frequency range corresponding to the first bandwidth, and receives the target SSB when it is found.

[0199] It should be noted that the network device determines the number of the synchronization grating within the frequency range of the first bandwidth according to the following formula:

[0200] f = 24250.8MHz + AMHz × N,

[0201] Where f represents the frequency corresponding to the global synchronization number, A represents the granularity of the synchronization grating, and N+22256 represents the global synchronization number, where N is a positive integer greater than or equal to 0 and less than or equal to 4383. It should be understood that one frequency corresponds to one global synchronization number.

[0202] In one possible implementation, the network device determines the global synchronization number within a first bandwidth according to a first rule. The network device determines that a SSB (Service Subsystem for Broadband) for a processing unit 520 located in the shared spectrum is transmitted on synchronization gratings corresponding to certain global synchronization numbers within the frequency range of the first bandwidth. The synchronization gratings for transmitting SSBs for terminal devices located in the shared spectrum are shared spectrum synchronization gratings, and their corresponding global synchronization numbers are shared spectrum global synchronization numbers. Similarly, SSBs for a processing unit 520 located in the non-shared spectrum are transmitted on synchronization gratings corresponding to certain global synchronization numbers. The synchronization gratings for transmitting SSBs for processing units 520 located in the non-shared spectrum are non-shared spectrum synchronization gratings, and their corresponding global synchronization numbers are non-shared spectrum global synchronization numbers. In one possible implementation, the non-shared spectrum synchronization gratings are the synchronization gratings with the smallest and / or largest numbers within the first bandwidth, and the others are shared spectrum synchronization gratings. Alternatively, in one possible implementation, the shared spectrum synchronization gratings are the synchronization gratings with the smallest and / or largest numbers within the first bandwidth, and the others are non-shared spectrum synchronization gratings.

[0203] In some embodiments, according to the first rule described above, when the subcarrier spacing is 120 kHz, the network device determines the first bandwidth to be 100 MHz. In the Above 52.6 GHz band, the global synchronization numbers determined according to the first formula and the first bandwidth are shown in Table 1 below, where the synchronization grating granularity is 17.28 MHz. Table 1 uses synchronization gratings of non-shared spectrum as the smallest and largest numbered synchronization gratings within the first bandwidth, with the others being synchronization gratings of shared spectrum as examples. Conversely, in other cases, only the shared spectrum global synchronization numbers in the table need to be replaced with the non-shared spectrum global synchronization numbers, and vice versa. Table 2 uses synchronization gratings of non-shared spectrum as the smallest numbered synchronization grating within the first bandwidth, with the others being synchronization gratings of shared spectrum as examples. Conversely, only the shared spectrum global synchronization numbers in the table need to be replaced with the non-shared spectrum global synchronization numbers, and vice versa. Table 3 uses the synchronization gratings of non-shared spectrum as the synchronization gratings with the largest number in the first bandwidth, and the others as synchronization gratings of shared spectrum as examples. In the opposite case, simply replace the global synchronization number of shared spectrum in the table with the global synchronization number of non-shared spectrum, and replace the global synchronization number of non-shared spectrum with the global synchronization number of shared spectrum.

[0204] It should be noted that the utilization rate of this first bandwidth cannot reach 100%, for example, it can only reach 95.04%. Within 100MHz, the position of the largest synchronization grating in the frequency domain is less than or equal to the 99.88MHz - 14.4MHz - 2.42MHz = 83.06MHz within this bandwidth, and the position of the smallest synchronization grating in the frequency domain is greater than or equal to the 14.4MHz + 2.42MHz = 16.82MHz within 100MHz. It should also be noted that in some embodiments, within the first bandwidth, a complete SSB can be placed for the synchronization grating corresponding to each global synchronization number. This application uses this as an example, but is not limited to this.

[0205] It should be noted that when the first subcarrier spacing is 120kHz, the corresponding SSB occupies a bandwidth of 28.8MHz in the frequency domain (i.e., 120kHz * 12 * 20). 12 indicates that a resource block (RB) contains 12 subcarriers, and 20 indicates that an SSB occupies 20 RBs. It should also be noted that in this embodiment, the synchronization grating is located in the middle of the SSB. Therefore, the SSB occupies 14.4MHz above and below the synchronization grating, as shown in the schematic diagram below. Figure 3 As shown. It should be noted that, corresponding to the formula above, the frequency in the formula for the synchronization grating corresponds to the center frequency of the SSB placed on the synchronization grating.

[0206] It should be noted that since the 52.6GHz-57GHz spectrum is shared by all countries, only the synchronization grating design method for the 57GHz-71GHz band is given here. The global synchronization number for shared spectrum can also be the same as the global synchronization number for non-shared spectrum, and vice versa.

[0207] As an example and not a limitation, the frequency range corresponding to the first bandwidth is 63.9GHz-64.0GHz. According to the above design, the synchronization gratings with the largest and smallest global synchronization numbers within the first bandwidth are synchronization gratings with non-shared spectrum, while the others are synchronization gratings with shared spectrum, such as... Figure 4 The diagram illustrates an example of this design approach. SSBs on shared spectrum bands are located on global synchronization numbers 24668 and 24671, while SSBs on non-shared bands are located on global synchronization numbers 24669 and 24670. 24667 is a synchronization grating that does not meet the conditions, meaning it cannot correspond to a complete SSB within the frequency range of the first bandwidth. It should be noted that the opposite is also possible: the synchronization grating with the largest global synchronization number within the first bandwidth is a shared spectrum synchronization grating; or the synchronization grating with the smallest global synchronization number within the first bandwidth is a shared spectrum synchronization grating, and the others are non-shared spectrum synchronization gratings, or vice versa. It should be understood that the network device only needs to specify a placement rule and publish this rule to the processing unit 520, enabling the processing unit 520, in the method provided in this embodiment, to determine whether the searched SSB is on a non-shared spectrum or a shared spectrum.

[0208] Tables 4 and 5 show the sync grating designs when the sync grating granularity is 34.56MHz.

[0209] It should be noted that Tables 4 and 5 above can be interpreted as searching for SSBs with a 240kHz subcarrier spacing at a synchronization grating granularity of 17.28MHz, or as searching for SSBs with a 120kHz subcarrier spacing at a synchronization grating granularity of 34.56MHz.

[0210] In some embodiments, according to the first rule described above, when the subcarrier spacing is 480 kHz, the network device determines the first bandwidth to be 400 MHz. In the Above 52.6 GHz band, the global synchronization numbers determined according to the first formula and the first bandwidth are shown in Table 6 below, where the synchronization grating granularity is 17.28. Table 6 uses the synchronization gratings of the shared spectrum as the smallest and largest numbered synchronization gratings within the first bandwidth, and the others as synchronization gratings of the non-shared spectrum as examples. Conversely, in other cases, only the shared spectrum global synchronization numbers in the table need to be replaced with the non-shared spectrum global synchronization numbers, and vice versa. Alternatively, the shared spectrum synchronization gratings can be used as the smallest numbered synchronization grating within the first bandwidth, and the others as synchronization gratings of the non-shared spectrum, and vice versa. In this example, the synchronization grating with the largest number within the first bandwidth can be used as the example, with the others being synchronization gratings with non-shared spectrum. Conversely, in the opposite case, simply replace the global synchronization number of the shared spectrum in the table with the global synchronization number of the non-shared spectrum, and vice versa. This application does not impose any limitations on this.

[0211] It should be noted that the utilization rate of this first bandwidth cannot reach 100%; for example, it can only reach 95.04%. Within 400MHz, the position of the frequency domain maximum synchronization grating is less than or equal to the 332.42MHz position within this bandwidth, and the position of the frequency domain minimum synchronization grating is greater than or equal to the 67.46MHz position within 400MHz. It should also be noted that in some embodiments, within the first bandwidth, a complete SSB can be placed for each global synchronization number corresponding to the synchronization grating; this application uses this as an example but is not limited thereto.

[0212] It should be noted that when the first subcarrier spacing is 480kHz, the corresponding SSB occupies a bandwidth of 115.2MHz in the frequency domain (i.e., 480kHz * 12 * 20), where 12 indicates that a resource block (RB) contains 12 subcarriers, and 20 indicates that an SSB occupies 20 RBs. It should also be noted that in this embodiment, the synchronization grating is located in the middle of the SSB. Therefore, the SSB occupies 57.6MHz above and below the synchronization grating.

[0213] It should be noted that since the 52.6GHz-57GHz spectrum is shared by all countries, only the synchronization grating design method for the 57GHz-71GHz band is given here. The global synchronization number for shared spectrum can also be the same as the global synchronization number for non-shared spectrum, and vice versa.

[0214] In some embodiments, according to the first rule described above, when the subcarrier spacing is 960 kHz, the network device determines the first bandwidth to be 400 MHz. In the Above 52.6 GHz band, the global synchronization numbers determined according to the first formula and the first bandwidth are shown in Table 4 below, where the synchronization grating granularity is 17.28. Table 7 uses synchronization gratings of non-shared spectrum as the smallest and largest numbered synchronization gratings within the first bandwidth, with the others being synchronization gratings of shared spectrum, as an example. Conversely, in other cases, only the shared spectrum global synchronization numbers in the table need to be replaced with the non-shared spectrum global synchronization numbers, and vice versa. Alternatively, the non-shared spectrum synchronization grating can be used as the smallest numbered synchronization grating within the first bandwidth, with the others being synchronization gratings of shared spectrum, and vice versa. In this example, the synchronization grating with the highest number within the first bandwidth can be used as the non-shared spectrum synchronization grating, and the others can be shared spectrum synchronization gratings. Conversely, in the opposite case, simply replace the shared spectrum global synchronization number in the table with the non-shared spectrum global synchronization number, and vice versa. This application does not impose any limitations on this.

[0215] It should be noted that the utilization rate of this first bandwidth cannot reach 100%; for example, it can only reach 95.04%. Within 400MHz, the position of the largest synchronization grating in the frequency domain is less than or equal to the 274.82MHz position within this bandwidth, and the position of the smallest synchronization grating in the frequency domain is greater than or equal to the 125.06MHz position within 400MHz. It should also be noted that in some embodiments, within the first bandwidth, a complete SSB can be placed for each global synchronization number corresponding to the synchronization grating; this application uses this as an example but is not limited thereto.

[0216] It should be noted that when the first subcarrier spacing is 960kHz, the corresponding SSB occupies a bandwidth of 230.4MHz in the frequency domain (i.e., 960kHz * 12 * 20), where 12 indicates that a resource block (RB) contains 12 subcarriers, and 20 indicates that an SSB occupies 20 RBs. It should also be noted that in this embodiment, the synchronization grating is located in the middle of the SSB. Therefore, the SSB occupies 57.6MHz above and below the synchronization grating.

[0217] It should be noted that since the 52.6GHz-57GHz spectrum is a shared spectrum for all countries, only the design method of the synchronization grating in the 57GHz-71GHz band is given here.

[0218] In some embodiments, the first rule is that when designing synchronization gratings, the network device does not distinguish between SSBs corresponding to processing units 520 that are specifically used for transmitting shared spectrum spectrum, nor does it distinguish between SSBs corresponding to processing units 520 that are specifically used for transmitting non-shared spectrum spectrum. When the network device sends an SSB to the transceiver unit 510, it carries a first signaling indicating that the current target SSB of the processing unit 520 is either a non-shared spectrum SSB or a shared spectrum SSB. This corresponds to the fact that Tables 1-4 above do not distinguish between global synchronization numbers for non-shared and shared spectrum spectrums.

[0219] The transceiver unit 510 is also used to receive SSBs.

[0220] In one possible implementation, the network device determines that the frequency range corresponding to the first bandwidth is the shared spectrum corresponding to the processing unit 520, and the network device transmits an SSB to the transceiver unit 510 on the synchronization grating of the shared spectrum. Alternatively, the network device determines that the frequency range corresponding to the first bandwidth is the non-shared spectrum corresponding to the processing unit 520, and the network device transmits an SSB to the transceiver unit 510 on the synchronization grating of the non-shared spectrum.

[0221] In one possible implementation, the network device determines that the frequency range corresponding to the first bandwidth is either a shared spectrum or a non-shared spectrum corresponding to the processing unit 520. The network device sends an SSB to the transceiver unit 510. The SSB includes a first signaling, which indicates the parsing method of the SSB, or indicates that the SSB is an SSB of a non-shared spectrum or an SSB of a shared spectrum.

[0222] Processing unit 520 is also used to search for SSBs within the frequency range corresponding to the first bandwidth.

[0223] In one possible implementation, if the global synchronization number of the synchronization grating corresponding to the searched target SSB is the previous synchronization number of the non-shared spectrum, the processing unit 520 parses the SSB according to the method corresponding to the non-shared spectrum. If the global synchronization number of the synchronization grating corresponding to the searched target SSB is the previous synchronization number of the shared spectrum, the processing unit 520 parses the SSB according to the method corresponding to the shared spectrum.

[0224] In one possible implementation, the target SSB searched by the processing unit 520 includes a first signaling message, and the processing unit 520 parses the SSB according to the content of the first signaling message.

[0225] Figure 6 This is a schematic diagram of a communication device 600 according to an embodiment of this application. The communication device 600 includes a transceiver 610, a processor 620, and a memory 630. The memory 630 is used to store instructions. The processor 620 is coupled to the memory 630 and is used to execute the instructions stored in the memory to perform the methods provided in the embodiments of this application described above.

[0226] Specifically, the transceiver 610 in the communication device 600 can correspond to the transceiver unit 510 in the communication device 500, and the processor 620 in the communication device 600 can correspond to the processing unit 520 in the communication device 500.

[0227] It should be understood that the memory 630 and processor 620 described above can be combined into a single processing device, with the processor 620 executing the program code stored in the memory 630 to achieve the aforementioned functions. In specific implementations, the memory 630 can be integrated into the processor 620 or independent of the processor 620.

[0228] It should be understood that the specific process by which each transceiver processor performs the corresponding steps described above has been explained in detail in the above method embodiments, and will not be repeated here for the sake of brevity.

[0229] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0230] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0231] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0232] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0233] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0234] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0235] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for designing a synchronization grating, characterized in that, include: The network device determines a first bandwidth, the frequency range corresponding to the first bandwidth being higher than 52.6 GHz; The network device configures multiple synchronization gratings within the first bandwidth according to a first rule. Each synchronization grating holds a synchronization signal block (SSB), and each synchronization grating corresponds to a global synchronization number. When the first subcarrier spacing of the SSB is 120 kHz: The SSB operating on the shared spectrum is placed on the synchronization grating corresponding to the global synchronization number of the shared spectrum. The global synchronization numbers include: 24692, 24698, 24710, 24728, 24731, 24734, 24737, 24740, 24743, 24746, 24749, 24752, 24755, 24761, 24767, 24773, 24779, and 2481. 2, 24815, 24818, 24821, 24824, 24827, 24830, 24833, 24836, 24842, 24848, 24854, 24860, 24893, 24896, 24899, 24902, 24905, 24908, 24911, 24914, 24917, 24923, 24929, 24935, 24941; The SSB operating on the non-shared spectrum is placed on the synchronization grating corresponding to the global synchronization number of the non-shared spectrum. The global synchronization numbers include: 24692, 24698, 24704, 24710, 24716, 24722, 24761, 24767, 24773, 24779, 24785, 24791, 24797, 24803, 24842, 24848, 24854, 24860, 24866, 24872, 24878, 24884, 24890, 24923, 24929, 24935, 24941, 24947, 24953, and 24959. or, When the first subcarrier spacing of the SSB is 480 kHz: The SSB operating on the shared spectrum is placed on the synchronization grating corresponding to the global synchronization number of the shared spectrum. The global synchronization numbers include: 24676, 24691, 24700, 24714, 24723, 24737, 24746, 24760, 24769, 24783, 24792, 24807, 24815, 24830, 24839, 24853, 24862, 24876, 24885, 24899, 24908, 24922, 24931, 24945. The SSB operating on the non-shared spectrum is placed on the synchronization grating corresponding to the global synchronization number of the non-shared spectrum. The global synchronization numbers include: 24677, 24689, 24701, 24713, 24725, 24749, 24773, 24797, 24821, 24845, 24869, 24893, 24917, and 24941. or, When the first subcarrier spacing of the SSB is 960 kHz: The SSB operating on the shared spectrum is placed on the synchronization grating corresponding to the global synchronization number of the shared spectrum. The global synchronization numbers include: 24680, 24687, 24703, 24711, 24726, 24734, 24749, 24757, 24772, 24780, 24796, 24803, 24819, 24826, 24842, 24850, 24865, 24873, 24888, 24911, 24919, 24934, 24942. The SSB operating on the non-shared spectrum is placed on the synchronization grating corresponding to the global synchronization number of the non-shared spectrum. The global synchronization numbers include: 24686, 24704, 24710, 24728, 24752, 24776, 24800, 24824, 24848, 24866, 24872, 24890, 24914, and 24938.

2. The method according to claim 1, characterized in that, The network device determines the first bandwidth, including: The network device determines the first bandwidth based on the first subcarrier spacing of the SSB, wherein... When the first subcarrier spacing is 120 kHz, the first bandwidth is 100 MHz. When the first subcarrier spacing is 480kHz, the first bandwidth is 400MHz. When the first subcarrier spacing is 960kHz, the first bandwidth is 400MHz.

3. The method according to claim 1 or 2, characterized in that, Within the first bandwidth, the number of global synchronization numbers for the available shared spectrum is 2, the number of global synchronization numbers for the non-shared spectrum is 2, and the global synchronization number interval for the shared spectrum is 3.

4. The method according to claim 1 or 2, characterized in that, The first rule is: Within the first bandwidth, the synchronization grating of the shared spectrum and the synchronization grating of the non-shared spectrum are located at different frequency domain positions.

5. A method for designing a synchronization grating, characterized in that, include: The terminal device determines the frequency range corresponding to the first bandwidth, and the frequency range corresponding to the first bandwidth is higher than 52.6 GHz. The terminal device searches for the synchronization signal block SSB at the frequency domain position of the synchronization grating corresponding to the global synchronization number within the frequency range corresponding to the first bandwidth. When the first subcarrier spacing of the SSB is 120 kHz: The SSB operating on the shared spectrum is placed on the synchronization grating corresponding to the global synchronization number of the shared spectrum. The global synchronization numbers include: 24692, 24698, 24710, 24728, 24731, 24734, 24737, 24740, 24743, 24746, 24749, 24752, 24755, 24761, 24767, 24773, 24779, and 2481. 2, 24815, 24818, 24821, 24824, 24827, 24830, 24833, 24836, 24842, 24848, 24854, 24860, 24893, 24896, 24899, 24902, 24905, 24908, 24911, 24914, 24917, 24923, 24929, 24935, 24941; The SSB operating on the non-shared spectrum is placed on the synchronization grating corresponding to the global synchronization number of the non-shared spectrum. The global synchronization numbers include: 24692, 24698, 24704, 24710, 24716, 24722, 24761, 24767, 24773, 24779, 24785, 24791, 24797, 24803, 24842, 24848, 24854, 24860, 24866, 24872, 24878, 24884, 24890, 24923, 24929, 24935, 24941, 24947, 24953, and 24959. or, When the first subcarrier spacing of the SSB is 480 kHz: The SSB operating on the shared spectrum is placed on the synchronization grating corresponding to the global synchronization number of the shared spectrum. The global synchronization numbers include: 24676, 24691, 24700, 24714, 24723, 24737, 24746, 24760, 24769, 24783, 24792, 24807, 24815, 24830, 24839, 24853, 24862, 24876, 24885, 24899, 24908, 24922, 24931, 24945. The SSB operating on the non-shared spectrum is placed on the synchronization grating corresponding to the global synchronization number of the non-shared spectrum. The global synchronization numbers include: 24677, 24689, 24701, 24713, 24725, 24749, 24773, 24797, 24821, 24845, 24869, 24893, 24917, and 24941. or, When the first subcarrier spacing of the SSB is 960 kHz: The SSB operating on the shared spectrum is placed on the synchronization grating corresponding to the global synchronization number of the shared spectrum. The global synchronization numbers include: 24680, 24687, 24703, 24711, 24726, 24734, 24749, 24757, 24772, 24780, 24796, 24803, 24819, 24826, 24842, 24850, 24865, 24873, 24888, 24911, 24919, 24934, 24942. The SSB operating on the non-shared spectrum is placed on the synchronization grating corresponding to the global synchronization number of the non-shared spectrum. The global synchronization numbers include: 24686, 24704, 24710, 24728, 24752, 24776, 24800, 24824, 24848, 24866, 24872, 24890, 24914, and 24938.

6. The method according to claim 5, characterized in that, The first bandwidth is determined by the first subcarrier spacing of the SSB, wherein, When the first subcarrier spacing is 120 kHz, the first bandwidth is 100 MHz. When the first subcarrier spacing is 480kHz, the first bandwidth is 400MHz. When the first subcarrier spacing is 960kHz, the first bandwidth is 400MHz.

7. The method according to claim 5 or 6, characterized in that, Within the first bandwidth, the number of global synchronization numbers for the available shared spectrum is 2, the number of global synchronization numbers for the non-shared spectrum is 2, and the global synchronization number interval for the shared spectrum is 3.

8. The method according to claim 5 or 6, characterized in that, Within the first bandwidth, the synchronization grating of the shared spectrum and the synchronization grating of the non-shared spectrum are located at different frequency domain positions.

9. A communication device, characterized in that, include: Memory is used to store program instructions and data; A processor, coupled to the memory, for executing instructions in the memory to implement the method as described in any one of claims 1 to 4.

10. A communication device, characterized in that, include: Memory is used to store program instructions and data; A processor, coupled to the memory, for executing instructions in the memory to implement the method as described in any one of claims 5 to 8.

11. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 1 to 8.

12. A chip, characterized in that, It includes a processor and a memory, the memory being used to store computer programs, and the processor being used to invoke and run computer media stored in the memory to perform the method as described in any one of claims 1 to 8.

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