Method and apparatus for determining center frequency point of synchronization signal block

Abstract

Disclosed in the present application are a method and apparatus for determining a center frequency point of a synchronization signal block, a storage medium, and an electronic apparatus. The method comprises: obtaining a target frequency band, the target frequency band being a frequency band which is added in a new wireless network; on the basis of an absolute frequency point number of the target frequency band, a first correlation, and a second correlation, determining a frequency range of a target synchronization signal block which matches the target frequency band, the first correlation being the relationship between a synchronization signal block and a system bandwidth, and the second correlation being the relationship between a control resource set and the system bandwidth; on the basis of the frequency range of the target synchronization signal block, generating a center frequency of a synchronization signal block for the target frequency band; and converting the center frequency of the synchronization signal block into a center frequency point of a synchronization signal block for the target frequency band. Adopting the described technical solution solves the problems in the related technology that the efficiency of determining a center frequency point of a synchronization signal block is relatively low, etc.

Description

Method and device for determining the center frequency of synchronization signal block

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on July 18, 2023, with application number 2023108825035 and invention name “Method and device for determining the center frequency of a synchronization signal block”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communications, and specifically, to a method and device for determining the center frequency of a synchronization signal block, a storage medium, and an electronic device. Background Art

[0003] SSB stands for Synchronization Signal and PBCH block. It consists of the Primary Synchronization Signals (PSS), Secondary Synchronization Signals (SSS), PBCH, and its associated Demodulation Reference Signal (DMRS). To access a NR (New Radio) network, a UE (User Equipment) must go through a process including cell search, obtaining cell system information, and random access. In NR, the UE uses the synchronization signals PSS / SSS to search for a cell, obtaining the cell's physical layer identity document (PCI) and downlink frequency synchronization. The UE then receives the PBCH and reads the Management Information Base (MIB) to obtain the cell's most important system information and information on how to receive other system information (SIB1). After receiving the PBCH, the UE can obtain the cell's downlink timing information (including the system frame number and subframe 0 position), thereby achieving downlink time synchronization. The UE then receives other system information (including SIB1 and SI messages) to learn how the cell operates and how to access it. Next, the UE initiates a random access procedure to acquire uplink synchronization and establish an RRC (Radio Resource Control) connection with the network. During this process, the SSB center frequency plays a crucial role in enabling the UE to access the cell.

[0004] In related technologies, a fixed SSB center frequency is set according to the deployed frequency band. This is because the current NR system mainly supports several fixed frequencies. However, with the expansion of NR services, more NR services need to support more frequency bands. However, this method cannot be used in all cell search scenarios, and its scalability and adaptability are relatively low in actual use.

[0005] There is no effective solution to the problem of low efficiency in determining the center frequency of the synchronization signal block in related technologies.

[0006] Summary of the Invention

[0007] The embodiments of the present application provide a method and device for determining the center frequency of a synchronization signal block, a storage medium, and an electronic device, so as to at least solve the problem of low efficiency in determining the center frequency of a synchronization signal block in related technologies.

[0008] According to one embodiment of the embodiments of the present application, a method for determining the center frequency of a synchronization signal block is provided, including: obtaining a target frequency band, wherein the target frequency band is a frequency band added in a new wireless network; determining a target synchronization signal block frequency range that matches the target frequency band based on the absolute frequency number of the target frequency band, a first association relationship, and a second association relationship, wherein the first association relationship is the relationship between the synchronization signal block and the system bandwidth, and the second association relationship is the relationship between the control resource set and the system bandwidth; generating the synchronization signal block center frequency of the target frequency band based on the target synchronization signal block frequency range; and converting the synchronization signal block center frequency into the synchronization signal block center frequency of the target frequency band.

[0009] Optionally, the target synchronization signal block frequency range matching the target frequency band is determined according to the absolute frequency point number of the target frequency band, the first association relationship and the second association relationship, including: calculating the target frequency value according to the absolute frequency point number, wherein the target frequency value is the frequency value corresponding to the common reference band point of the resource block grid; determining the target synchronization signal block frequency range according to the target frequency value, the first association relationship and the second association relationship.

[0010] Optionally, determining the target synchronization signal block frequency range based on the target frequency value, the first association relationship, and the second association relationship includes: determining the first synchronization signal block frequency range based on the target frequency value and the first association relationship, and determining the second synchronization signal block frequency range based on the target frequency value and the second association relationship; taking the intersection of the first synchronization signal block frequency range and the second synchronization signal block frequency range to obtain the target synchronization signal block frequency range.

[0011] Optionally, determining the first synchronization signal block frequency range according to the target frequency value and the first association relationship includes: determining the first synchronization signal block frequency range by using the following formula:

[0012] Among them, SSB start is the frequency lower edge of the synchronization signal block, F SSB1 is the first synchronization signal block frequency, F PointA is the target frequency value, SSB end is the frequency upper edge of the synchronization signal block, F REF is the absolute frequency, N RB is the number of resource blocks, It is the number of subcarriers contained in each resource block.

[0013] Optionally, determining the second synchronization signal block frequency range according to the target frequency value and the second association relationship includes: determining the second synchronization signal block frequency range by using the following formula:

[0014] The frequency lower edge SSB of the synchronization signal block is determined by the following formula: start : F SSB2 is the second synchronization signal block frequency, F PointA is the target frequency value, F REF is the absolute frequency, N RB is the number of resource blocks, The number of subcarriers in each resource block, CORESET0 start To control the starting position of the resource set, CORESET0 end To control the end position of the resource set, K SSB is the subcarrier offset.

[0015] Optionally, the synchronization signal block center frequency is generated according to the target synchronization signal block frequency range, including: using the synchronization signal block frequency range to construct a synchronization signal block reference frequency range calculation formula; performing optimal calculation on the synchronization signal block reference frequency range calculation formula to obtain the synchronization signal block center frequency.

[0016] Optionally, an optimization calculation formula for the reference frequency range of the synchronization signal block is performed to obtain the center frequency of the synchronization signal block, including: calculating the reference frequency range calculation formula for the synchronization signal block to obtain a parameter range of a target parameter, wherein the target parameter is used to represent the offset of the reference frequency relative to the target reference point; determining the minimum parameter value in the parameter range as the target parameter value of the target parameter; and using the target parameter value to solve the reference frequency calculation formula to obtain the center frequency of the synchronization signal block.

[0017] According to another embodiment of the embodiments of the present application, a device for determining the center frequency of a synchronization signal block is also provided, including: an acquisition module, configured to acquire a target frequency band, wherein the target frequency band is a frequency band added in a new wireless network; a determination module, configured to determine a target synchronization signal block frequency range that matches the target frequency band based on the absolute frequency number of the target frequency band, a first association relationship and a second association relationship, wherein the first association relationship is the relationship between the synchronization signal block and the system bandwidth, and the second association relationship is the relationship between the control resource set and the system bandwidth; a generation module, configured to generate the synchronization signal block center frequency of the target frequency band according to the target synchronization signal block frequency range; and a conversion module, configured to convert the synchronization signal block center frequency into the synchronization signal block center frequency of the target frequency band.

[0018] According to another aspect of the embodiments of the present application, a computer-readable storage medium is also provided, in which a computer program is stored, wherein the computer program is configured to execute the above-mentioned method for determining the center frequency of the synchronization signal block when running.

[0019] According to another aspect of an embodiment of the present application, an electronic device is also provided, including a memory, a processor, and a computer program stored in the memory and runnable on the processor, wherein the processor executes the method for determining the center frequency of the synchronization signal block through the computer program.

[0020] In an embodiment of the present application, a target frequency band is obtained, wherein the target frequency band is a frequency band added in a new wireless network; a target synchronization signal block frequency range matching the target frequency band is determined according to the absolute frequency point number of the target frequency band, a first association relationship, and a second association relationship, wherein the first association relationship is the relationship between the synchronization signal block and the system bandwidth, and the second association relationship is the relationship between the control resource set and the system bandwidth; a synchronization signal block center frequency of the target frequency band is generated according to the target synchronization signal block frequency range; the synchronization signal block center frequency is converted into the synchronization signal block center frequency point of the target frequency band, that is, there is a first association relationship between the synchronization signal block and the system bandwidth, and there is a second management relationship between the control resource set and the system bandwidth, and then after obtaining the target frequency band, the target synchronization signal block frequency range matching the target frequency band can be determined according to the absolute frequency point number of the target frequency band, the first management relationship, and the second management relationship, and then the synchronization signal block center frequency component of the target frequency band can be generated according to the synchronization signal block frequency range, and then the synchronization signal block center frequency is converted into the corresponding frequency point identifier to obtain the synchronization signal block center frequency point. The above technical solution solves the problem of low efficiency in determining the center frequency of the synchronization signal block in the related technology, and achieves the technical effect of improving the efficiency in determining the center frequency of the synchronization signal block. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] FIG1 is a schematic diagram of a hardware environment for a method for determining a synchronization signal block center frequency according to an embodiment of the present application;

[0024] FIG2 is a flowchart of a method for determining a synchronization signal block center frequency according to an embodiment of the present application;

[0025] FIG3 is a schematic diagram of an optional device interaction according to an embodiment of the present application;

[0026] FIG4 is a schematic diagram of an optional target synchronization signal block frequency range determination according to an embodiment of the present application;

[0027] FIG5 is a schematic diagram of an optional system bandwidth according to an embodiment of the present application;

[0028] FIG6 is a flowchart of an optional SSB center frequency calculation according to an embodiment of the present application;

[0029] FIG7 is a schematic diagram of an optional target frequency value conversion according to an embodiment of the present application;

[0030] Figure 8 is a structural block diagram of a device for determining the center frequency of a synchronization signal block according to an embodiment of the present application. DETAILED DESCRIPTION

[0031] To help those skilled in the art better understand the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention, in conjunction with the accompanying drawings. It should be understood that the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] The method embodiments provided in the embodiments of the present application can be executed in a computer terminal, a device terminal or a similar computing device. Taking operation on a computer terminal as an example, FIG1 is a hardware environment diagram of a method for determining the center frequency of a synchronization signal block according to an embodiment of the present application. As shown in FIG1 , the computer terminal may include one or more (only one is shown in FIG1 ) processors 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 configured to store data. In an exemplary embodiment, the computer terminal may also include a transmission device 106 and an input / output device 108 configured to have a communication function. It will be understood by those skilled in the art that the structure shown in FIG1 is only illustrative and does not limit the structure of the computer terminal. For example, the computer terminal may also include more or fewer components than those shown in FIG1 , or have a different configuration with equivalent functions or more functions than those shown in FIG1 .

[0034] The memory 104 can be configured to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the method for sending a message push in the embodiment of the present invention. The processor 102 executes the computer program stored in the memory 104 to perform various functional applications and data processing, that is, to implement the above-mentioned method. The memory 104 may include a high-speed random access memory and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may include a memory remotely located relative to the processor 102, and these remote memories may be connected to the computer terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0035] The transmission device 106 is configured to receive or transmit data via a network. A specific example of the aforementioned network may include a wireless network provided by a computer terminal's communications provider. In one embodiment, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to enable communication with the Internet. In another embodiment, the transmission device 106 may be a radio frequency (RF) module configured to communicate with the Internet wirelessly.

[0036] This embodiment provides a method for determining the center frequency of a synchronization signal block. FIG2 is a flowchart of a method for determining the center frequency of a synchronization signal block according to an embodiment of the present application. The flow includes the following steps:

[0037] Step S202: acquiring a target frequency band, wherein the target frequency band is a frequency band added in the new wireless network;

[0038] Step S204: determining a target synchronization signal block frequency range that matches the target frequency band based on the absolute frequency point number of the target frequency band, the first association relationship, and the second association relationship, wherein the first association relationship is the relationship between the synchronization signal block and the system bandwidth, and the second association relationship is the relationship between the control resource set and the system bandwidth;

[0039] Step S206: Generate the synchronization signal block center frequency of the target frequency band according to the target synchronization signal block frequency range.

[0040] Step S208: Convert the center frequency of the synchronization signal block to the center frequency point of the synchronization signal block of the target frequency band.

[0041] Through the above steps, a first association relationship is established between the synchronization signal block and the system bandwidth, and a second management relationship is established between the control resource set and the system bandwidth. Therefore, after obtaining the target frequency band, the target synchronization signal block frequency range that matches the target frequency band can be determined based on the absolute frequency point number of the target frequency band, the first management relationship, and the second management relationship. Furthermore, the synchronization signal block center frequency component of the target frequency band can be generated based on the synchronization signal block frequency range, and the synchronization signal block center frequency can be converted into a corresponding frequency point identifier to obtain the synchronization signal block center frequency point. The above technical solution solves the problem of low efficiency in determining the synchronization signal block center frequency point in related technologies, and achieves the technical effect of improving the efficiency of determining the synchronization signal block center frequency point.

[0042] In the technical solution provided in the above step S202, the target frequency band may be, but is not limited to, determined according to the communication scenario and communication requirements, and may include, but is not limited to, frequency bands such as N40, N48, N77, and N78.

[0043] In the technical solution provided in the above step S204, the absolute frequency point number of the target frequency band may be an absolute frequency point number corresponding to the target frequency band determined from frequency bands and absolute frequency point numbers having a corresponding relationship.

[0044] Optionally, in this embodiment, the target synchronization signal block frequency range can be obtained by optimizing the first association relationship and the second association relationship using the absolute frequency point number of the target frequency band, or the first synchronization signal block frequency range can be calculated based on the absolute frequency point number and the first association relationship, and the second synchronization signal block frequency range can be calculated based on the absolute frequency point number and the second association relationship, and then the intersection of the first synchronization signal block frequency range and the second synchronization signal block frequency range is taken to obtain the target synchronization signal block frequency range. This solution does not limit this.

[0045] In the technical solution provided in the above step S206, the center frequency of the synchronization signal block can be obtained by optimizing the frequency in the target synchronization signal block frequency range. For example, the minimum value in the target synchronization signal block frequency range is determined as the center frequency of the synchronization signal block. This solution does not limit this.

[0046] In the technical solution provided in step S208 above, the center frequency of the synchronization signal block can be, but is not limited to, calculated using the following formula: REF =F REF-Offs +ΔF Global (NN REF-Offs )

[0047] Among them, F REF is the center frequency of the synchronization signal block, ΔF Global is the change in the global frame interval, F REF-Offs Indicates the time offset of the FREF signal relative to a specific reference point, N REF-Offs Refers to the offset of the NR reference signal relative to the resource block (RB) boundary, where N is the center frequency of the synchronization signal block.

[0048] The embodiment of the present application can be applied to a cell search scenario when a UE wants to access an NR network, wherein the UE device may include but is not limited to a mobile phone, a smart wearable device, a tablet computer, etc. FIG3 is an optional device interaction diagram according to an embodiment of the present application. As shown in FIG3 , when the user equipment accesses the NR network, it searches for a cell and thereby accesses the NR network.

[0049] As an optional embodiment, determining the target synchronization signal block frequency range matching the target frequency band according to the absolute frequency point number of the target frequency band, the first association relationship, and the second association relationship includes:

[0050] Calculate the target frequency value according to the absolute frequency point number, where the target frequency value is the frequency value corresponding to the common reference band point of the resource block grid;

[0051] The target synchronization signal block frequency range is determined based on the target frequency value, the first association relationship and the second association relationship.

[0052] Optionally, in this embodiment, the target frequency value may be calculated using the following formula:

[0053] Among them, F REF It is the frequency representation of the given uplink and downlink center frequency points, N RB is the number of RBs corresponding to the bandwidth, The number of subcarriers in each RB. The current configuration is fixed to 12, Δf = 2 μ 15[kHz], currently μ is set to 1, i.e. Δf = 30(KHz), F PointA is the target frequency value.

[0054] Optionally, in this embodiment, the target synchronization signal block frequency range can be obtained by optimizing the first association relationship and the second association relationship using the target frequency value, or the first synchronization signal block frequency range can be calculated based on the target frequency value and the first association relationship, and the second synchronization signal block frequency range can be calculated based on the absolute frequency point number and the second association relationship, and then the intersection of the first synchronization signal block frequency range and the second synchronization signal block frequency range is taken to obtain the target synchronization signal block frequency range. This solution does not limit this.

[0055] As an optional embodiment, determining the target synchronization signal block frequency range according to the target frequency value, the first association relationship, and the second association relationship includes:

[0056] Determine a first synchronization signal block frequency range according to the target frequency value and the first association relationship, and determine a second synchronization signal block frequency range according to the target frequency value and the second association relationship;

[0057] The intersection of the first synchronization signal block frequency range and the second synchronization signal block frequency range is taken to obtain the target synchronization signal block frequency range.

[0058] Optionally, in this embodiment, in order to satisfy that the entire bandwidth of SSB must be within the system bandwidth range, and to satisfy the constraint relationship between SSB, CORESET0 and the entire system bandwidth, the first synchronization signal block frequency range and the second synchronization signal block frequency range are intersected so that the calculated SSB satisfies the above conditions at the same time. Figure 4 is an optional target synchronization signal block frequency range determination schematic diagram according to an embodiment of the present application. As shown in Figure 4, the first synchronization signal block frequency range is determined according to the target frequency value and the first association relationship, and the second synchronization signal block frequency range is determined according to the target frequency value and the second association relationship. By intersecting the two synchronization signal frequency ranges, the synchronization signal block frequencies within the final obtained frequency range all meet the constraint conditions.

[0059] Optionally, in this embodiment, when determining the frequency range of the first synchronization signal block, it is necessary to follow the principle that the entire bandwidth of the SSB must be within the system bandwidth.

[0060] Optionally, in this embodiment, when determining the frequency range of the second synchronization signal block, it is necessary to consider the relationship between SSB, CORESET0 (control resource set) and the entire bandwidth. Figure 5 is a schematic diagram of an optional system bandwidth according to an embodiment of the present application. As shown in Figure 5, the meaning and setting of the offset in the above figure can be known from Chapter 13 of Protocol 38.213. For example, we currently implement the configuration that both SSB and PDCCH are 30kHz, and select parameters according to Table 1:

[0061] Table 1

[0062] The frequency domain starting position of CORESET0 must also be greater than PointA, and the ending position must be lower than the maximum frequency of the system bandwidth. The bandwidth of CORESET0 is expressed as , which can be obtained by setting the index and querying the table above.

[0063] As an optional embodiment, determining the first synchronization signal block frequency range according to the target frequency value and the first association relationship includes:

[0064] The frequency range of the first synchronization signal block is determined by the following formula:

[0065] Among them, SSB start is the frequency lower edge of the synchronization signal block, F SSB1 is the first synchronization signal block frequency, F PointA is the target frequency value, SSB end is the frequency upper edge of the synchronization signal block, F REF is the absolute frequency, N RB is the number of resource blocks, It is the number of subcarriers contained in each resource block.

[0066] As an optional embodiment, determining the second synchronization signal block frequency range according to the target frequency value and the second association relationship includes:

[0067] The second synchronization signal block frequency range is determined by the following formula:

[0068] The frequency lower edge SSB of the synchronization signal block is determined by the following formula: start : F SSB2 is the second synchronization signal block frequency, F PointA is the target frequency value, F REF is the absolute frequency, N RB is the number of resource blocks, The number of subcarriers in each resource block, CORESET0 start To control the starting position of the resource set, CORESET0 end To control the end position of the resource set, K SSB is the subcarrier offset.

[0069] Optionally, in this embodiment, the protocol stipulates that K SSB The subcarrier spacing is Δf'=15kHz, K SSB The value range is 0 to 23. Then the channel grid condition needs to be met. The step size of different frequency bands is different. Table 2 is an optional channel grid table according to an embodiment of the present application, as shown in Table 2:

[0070] Table 2

[0071] As an optional embodiment, generating a synchronization signal block center frequency according to a target synchronization signal block frequency range includes:

[0072] Use the synchronization signal block frequency range to construct a synchronization signal block reference frequency range calculation formula;

[0073] The calculation formula of the reference frequency range of the synchronization signal block is optimized to obtain the center frequency of the synchronization signal block.

[0074] Optionally, in this embodiment, the center frequency of the synchronization signal block must meet the synchronization grid condition, and then the synchronization signal block reference frequency range calculation formula can be constructed based on this condition. Table 3 is an optional correspondence table of GSCN values ​​and frequencies according to an embodiment of the present application, as shown in Table 3:

[0075] Table 3

[0076] Then, a calculation formula for the reference frequency range of the synchronization signal block can be constructed based on the characterization content. For example, the corresponding SS Block frequency position SSREF formula can be selected according to the current Frequency range to construct a calculation formula for the reference frequency range of the synchronization signal block.

[0077] As an optional embodiment, performing an optimization calculation on a synchronization signal block reference frequency range calculation formula to obtain a synchronization signal block center frequency includes:

[0078] Calculating a synchronization signal block reference frequency range calculation formula to obtain a parameter range of a target parameter, where the target parameter is used to represent an offset of the reference frequency relative to a target reference point;

[0079] determining the minimum parameter value in the parameter range as the target parameter value of the target parameter;

[0080] The reference frequency calculation formula is solved using the target parameter value to obtain the center frequency of the synchronization signal block.

[0081] Optionally, in this embodiment, according to Table 5.4.3.1 of the communication protocol 38.101, when the frequency range is 0-3000 MHz, the corresponding formula is N*1200 kHz+M*50 kHz, and the target parameters include N and M. When the frequency range is 3000-24250 MHz, the corresponding formula is 3000 MHz+N*1.44 MHz, and the target parameters include N.

[0082] Optionally, in this embodiment, after the target parameters are calculated, they are substituted into the corresponding SS Block frequency position SSREF calculation formula recorded in Table 5.4.3.1 of communication protocol 38.101 to obtain the synchronization signal block center frequency.

[0083] In this application, when the uplink and downlink center frequencies are known, F REF is known; the bandwidth is known, N RB It is also known that the index of CORESET 0 can be set in advance, so the offset and All are known. SSB In combination with Table 5.4.3.1-1 and Table 5.4.2.1-1, it is expressed by N (or N and M). When the entire bandwidth of SSB is satisfied and the constraint relationship between SSB, CORESET0 and the entire system bandwidth is satisfied, and the requirements of the channel grid and synchronization grid step are satisfied, the value range of N can be derived. Generally, the minimum value of N is taken as the center frequency of the SSB actually used. Figure 6 is an optional SSB center frequency calculation flow chart according to an embodiment of the present application. As shown in Figure 6, it includes at least the following steps

[0084] S601, obtaining corresponding uplink and downlink center frequency target values;

[0085] S602, the entire bandwidth of SSB must be within the system bandwidth. The frequency domain of SSB is fixed at 20 RBs, so the frequency lower edge of SSB is expressed as

[0086] The upper frequency edge of SSB is expressed as

[0087] S603, the frequency domain starting position of CORESET0 must also be greater than PointA, and the ending position must be lower than the maximum frequency of the system bandwidth. The bandwidth of CORESET0 is expressed as The starting position of CORESET0 can be expressed as:

[0088] The end position of CORESET0 can be expressed as:

[0089] At step S604, since the calculated SSB center frequency must satisfy the channel grid conditions and the synchronization grid conditions, the value range of N can be determined by combining Table 5.4.2.3-1 of communication protocol 38.101 and Table 5.4.3.1 of communication protocol 38.101.

[0090] S605, take the minimum value of N and convert N into SS REF .

[0091] In actual use, the uplink and downlink center frequencies are expressed as N REF , a target frequency value is obtained by converting it. FIG7 is a schematic diagram of an optional target frequency value conversion according to an embodiment of the present application, as shown in FIG7 :

[0092] The uplink and downlink center frequency is represented by N REFThe center frequency we usually use is expressed in frequency, which involves the conversion between frequency and ARFCN, and also involves the concept of frequency grid. The frequency F is obtained by the following formula and 5.4.2.1 of protocol 38.101 REF： F REF =F REF-Offs +ΔF Global (N REF -N REF-Offs )

[0093] Table 4 is an optional frequency grid table according to an embodiment of the present application.

[0094] Table 4

[0095] Different frequency ranges use different values ​​to calculate the formula. The frequency of Point A is the frequency of the uplink and downlink center frequencies minus 1 / 2 of the bandwidth, that is:

[0096] Among them F REF It is the frequency representation of the given uplink and downlink center frequency points, N RB is the number of RBs corresponding to the bandwidth, The number of subcarriers in each RB. The current configuration is fixed to 12, Δf = 2 μ 15 [kHz], currently μ is set to 1, i.e. Δf = 30 (kHz).

[0097] The number of RBs corresponding to different bandwidths is shown in Table 5:

[0098] Table 5

[0099] In order to better understand the above process, the above process is described below in conjunction with optional embodiments, but it is not used to limit the technical solutions of the embodiments of the present application.

[0100] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software and the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods of each embodiment of the present application.

[0101] FIG8 is a structural block diagram of a device for determining a center frequency of a synchronization signal block according to an embodiment of the present application; as shown in FIG8 , the device includes:

[0102] An acquisition module 82 is configured to acquire a target frequency band, wherein the target frequency band is a frequency band added in the new wireless network;

[0103] a determination module 84 configured to determine a target synchronization signal block frequency range that matches the target frequency band based on the absolute frequency point number of the target frequency band, a first association relationship, and a second association relationship, wherein the first association relationship is a relationship between the synchronization signal block and the system bandwidth, and the second association relationship is a relationship between the control resource set and the system bandwidth;

[0104] A generating module 86 is configured to generate a synchronization signal block center frequency of a target frequency band according to a target synchronization signal block frequency range;

[0105] The conversion module 88 is configured to convert the center frequency of the synchronization signal block into the center frequency point of the synchronization signal block of the target frequency band.

[0106] Through the above embodiment, a first association relationship is established between the synchronization signal block and the system bandwidth, and a second management relationship is established between the control resource set and the system bandwidth. Therefore, after obtaining the target frequency band, the target synchronization signal block frequency range that matches the target frequency band can be determined based on the absolute frequency point number of the target frequency band, the first management relationship, and the second management relationship. Furthermore, the synchronization signal block center frequency component of the target frequency band can be generated based on the synchronization signal block frequency range, and the synchronization signal block center frequency can be converted into a corresponding frequency point identifier to obtain the synchronization signal block center frequency point. The above technical solution solves the problem of low efficiency in determining the synchronization signal block center frequency point in related technologies, and achieves the technical effect of improving the efficiency of determining the synchronization signal block center frequency point.

[0107] Optionally, determine the modules, including:

[0108] A calculation unit is configured to calculate a target frequency value according to an absolute frequency point number, wherein the target frequency value is a frequency value corresponding to a common reference band point of a resource block grid;

[0109] The determination unit is configured to determine the target synchronization signal block frequency range based on the target frequency value, the first association relationship and the second association relationship.

[0110] Optionally, determine the unit, set to:

[0111] Determine a first synchronization signal block frequency range according to the target frequency value and the first association relationship, and determine a second synchronization signal block frequency range according to the target frequency value and the second association relationship;

[0112] The intersection of the first synchronization signal block frequency range and the second synchronization signal block frequency range is taken to obtain the target synchronization signal block frequency range.

[0113] Optionally, determine the unit, set to:

[0114] The frequency range of the first synchronization signal block is determined by the following formula:

[0115] Among them, SSB start is the frequency lower edge of the synchronization signal block, F SSB1 is the first synchronization signal block frequency, F PointA is the target frequency value, SSB end is the frequency upper edge of the synchronization signal block, F REF is the absolute frequency, N RB is the number of resource blocks, It is the number of subcarriers contained in each resource block.

[0116] Optionally, determine the unit, set to:

[0117] The second synchronization signal block frequency range is determined by the following formula:

[0118] The frequency lower edge SSB of the synchronization signal block is determined by the following formula: start : F SSB2 is the second synchronization signal block frequency, F PointA is the target frequency value, F REF is the absolute frequency, N RB is the number of resource blocks, The number of subcarriers in each resource block, CORESET0 start To control the starting position of the resource set, CORESET0 end To control the end position of the resource set, K SSB is the subcarrier offset.

[0119] Optionally, generate modules, including:

[0120] A construction unit is configured to construct a synchronization signal block reference frequency range calculation formula using the synchronization signal block frequency range;

[0121] The calculation unit is configured to perform an optimization calculation on the reference frequency range calculation formula of the synchronization signal block to obtain the center frequency of the synchronization signal block.

[0122] Optionally, the calculation unit is set to:

[0123] Calculating a synchronization signal block reference frequency range calculation formula to obtain a parameter range of a target parameter, where the target parameter is used to represent an offset of the reference frequency relative to a target reference point;

[0124] determining the minimum parameter value in the parameter range as the target parameter value of the target parameter;

[0125] The reference frequency calculation formula is solved using the target parameter value to obtain the center frequency of the synchronization signal block.

[0126] An embodiment of the present application also provides a storage medium, which includes a stored program, wherein when the above program is run, any of the above methods for determining the center frequency of the synchronization signal block is executed.

[0127] Optionally, in this embodiment, the storage medium may be configured to store program codes for executing the following steps: acquiring a target frequency band, wherein the target frequency band is a frequency band added in the new wireless network;

[0128] Determine, according to the absolute frequency point number of the target frequency band, the first association relationship and the second association relationship, the target synchronization signal block frequency range that matches the target frequency band, wherein the first association relationship is the relationship between the synchronization signal block and the system bandwidth, and the second association relationship is the relationship between the control resource set and the system bandwidth;

[0129] Generate a synchronization signal block center frequency of a target frequency band according to a target synchronization signal block frequency range;

[0130] Convert the synchronization signal block center frequency to the synchronization signal block center frequency point of the target frequency band.

[0131] An embodiment of the present application also provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute the steps in any of the above-mentioned embodiments of the method for determining the center frequency of a synchronization signal block.

[0132] Optionally, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0133] Optionally, in this embodiment, the processor may be configured to perform the following steps through a computer program: acquiring a target frequency band, wherein the target frequency band is a frequency band added in the new wireless network;

[0134] Determine, according to the absolute frequency point number of the target frequency band, the first association relationship and the second association relationship, the target synchronization signal block frequency range that matches the target frequency band, wherein the first association relationship is the relationship between the synchronization signal block and the system bandwidth, and the second association relationship is the relationship between the control resource set and the system bandwidth;

[0135] Generate a synchronization signal block center frequency of a target frequency band according to a target synchronization signal block frequency range;

[0136] Convert the synchronization signal block center frequency to the synchronization signal block center frequency point of the target frequency band.

[0137] Optionally, in this embodiment, the above-mentioned storage medium may include but is not limited to: a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and other media that can store program codes.

[0138] Optionally, specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation modes, and this embodiment will not be described in detail here.

[0139] Obviously, those skilled in the art should understand that the modules or steps of the present application described above can be implemented using a general-purpose computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices. Alternatively, they can be implemented using program code executable by the computing device, so that they can be stored in a storage device and executed by the computing device. In some cases, the steps shown or described can be performed in a different order than herein, or they can be made into separate integrated circuit modules, or multiple modules or steps can be made into a single integrated circuit module for implementation. Thus, the present application is not limited to any specific combination of hardware and software.

[0140] The above is only an optional implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for determining a center frequency of a synchronization signal block, comprising: Acquire a target frequency band, wherein the target frequency band is a frequency band added in the new wireless network; Determine, according to the absolute frequency point number of the target frequency band, a first association relationship and a second association relationship a target synchronization signal block frequency range matching the target frequency band, wherein the first association relationship is a relationship between a synchronization signal block and a system bandwidth, and the second association relationship is a relationship between a control resource set and the system bandwidth; Generating a synchronization signal block center frequency of the target frequency band according to the target synchronization signal block frequency range; The synchronization signal block center frequency is converted into the synchronization signal block center frequency point of the target frequency band.

2. The method according to claim 1, wherein: The determining, according to the absolute frequency point number of the target frequency band, the first association relationship and the second association relationship, a target synchronization signal block frequency range matching the target frequency band includes: Calculate a target frequency value according to the absolute frequency point number, wherein the target frequency value is a frequency value corresponding to a common reference band point of a resource block grid; The target synchronization signal block frequency range is determined according to the target frequency value, the first association relationship and the second association relationship.

3. The method according to claim 2, wherein: The determining the target synchronization signal block frequency range according to the target frequency value, the first association relationship, and the second association relationship includes: Determine a first synchronization signal block frequency range according to the target frequency value and the first association relationship, and determine a second synchronization signal block frequency range according to the target frequency value and the second association relationship; The intersection of the first synchronization signal block frequency range and the second synchronization signal block frequency range is taken to obtain the target synchronization signal block frequency range.

4. The method according to claim 3, wherein: The determining the first synchronization signal block frequency range according to the target frequency value and the first association relationship includes: The frequency range of the first synchronization signal block is determined by the following formula: Among them, SSB start is the frequency lower edge of the synchronization signal block, F SSB1 is the first synchronization signal block frequency, F PointA is the target frequency value, SSB end is the frequency upper edge of the synchronization signal block, F REF is the absolute frequency, N RB is the number of resource blocks, It is the number of subcarriers contained in each resource block.

5. The method according to claim 3, wherein: The determining the second synchronization signal block frequency range according to the target frequency value and the second association relationship includes: The frequency range of the second synchronization signal block is determined by the following formula: Among them, the frequency lower edge SSB of the synchronization signal block is determined by the following formula start : F SSB2 is the second synchronization signal block frequency, F PointA is the target frequency value, F REF is the absolute frequency, N RB is the number of resource blocks, is the number of subcarriers contained in each resource block, CORESET0 start is the starting position of the control resource set, CORESET0 end is the end position of the control resource set, K SSB is the subcarrier offset.

6. The method according to claim 1, wherein: Generating the synchronization signal block center frequency according to the target synchronization signal block frequency range includes: Construct a synchronization signal block reference frequency range calculation formula using the synchronization signal block frequency range; The calculation formula for the reference frequency range of the synchronization signal block is optimized to obtain the center frequency of the synchronization signal block.

7. The method according to claim 6, wherein: The optimizing calculation of the synchronization signal block reference frequency range calculation formula to obtain the synchronization signal block center frequency includes: Calculating the synchronization signal block reference frequency range calculation formula to obtain a parameter range of a target parameter, wherein the target parameter is used to represent an offset of the reference frequency relative to a target reference point; Determining the minimum parameter value in the parameter range as the target parameter value of the target parameter; The target parameter value is used to solve the reference frequency calculation formula to obtain the center frequency of the synchronization signal block.

8. A device for determining the center frequency of a synchronization signal block, wherein: include: An acquisition module is configured to acquire a target frequency band, wherein the target frequency band is a frequency band added in the new wireless network; A determination module is configured to determine a target synchronization signal block frequency range matching the target frequency band according to an absolute frequency point number of the target frequency band, a first association relationship, and a second association relationship, wherein the first association relationship is a relationship between a synchronization signal block and a system bandwidth, and the second association relationship is a relationship between a control resource set and the system bandwidth; A generating module, configured to generate a synchronization signal block center frequency of the target frequency band according to the target synchronization signal block frequency range; The conversion module is configured to convert the center frequency of the synchronization signal block into the center frequency point of the synchronization signal block of the target frequency band.

9. A computer-readable storage medium, wherein: The computer-readable storage medium includes a stored program, wherein the program executes the method according to any one of claims 1 to 7 when executed.

10. An electronic device comprising a memory and a processor, wherein: A computer program is stored in the memory, and the processor is configured to execute the method according to any one of claims 1 to 7 through the computer program.

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