Method and apparatus for determining synchronization signal block center frequency point

Abstract

The application discloses a method and device for determining a synchronization signal block center frequency point, a storage medium and an electronic device. The method comprises the following steps: acquiring a target frequency band, wherein the target frequency band is a frequency band added in a new radio network; determining a target synchronization signal block frequency range matched with the target frequency band according to an absolute frequency point number of the target frequency band, a first correlation relationship and a second correlation relationship, wherein the first correlation relationship is a relationship between a synchronization signal block and a system bandwidth, and the second correlation 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; and converting the synchronization signal block center frequency into a synchronization signal block center frequency point of the target frequency band. By using the above technical solution, the problem of low determination efficiency of the synchronization signal block center frequency point in the related art is solved.

Description

Technical Field

[0001] This application relates to the field of communications, and more specifically, to a method and apparatus for determining the center frequency of a synchronization signal block, a storage medium, and an electronic device. Background Technology

[0002] SSB is short 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). For a UE (User Equipment) to access the NR network, it must go through processes such as cell search, obtaining cell system information, and random access. In NR, the UE performs a cell search using the PSS / SSS to obtain the cell's Physical Layer Cell ID (PCI) and downlink frequency synchronization. Then, the UE receives the PBCH and reads the System Information Block (MIB) to obtain the cell's most important system information and information on how to receive other system information (SIB1). Furthermore, after receiving the PBCH, the UE can obtain the cell's downlink timing information (including the system frame number, subframe 0 position, etc.), thus achieving downlink time synchronization. Then, by receiving other system information (including SIB1 and SI messages), the UE can obtain information on how the cell operates and how to access it. Next, the UE will initiate a random access procedure to obtain uplink synchronization and establish an RRC connection with the network. During this process, the SSB center frequency plays a crucial role in the UE's access to the cell.

[0003] 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 a few fixed frequency points. However, with the expansion of NR services, more NR services need to support more frequency bands. However, this method cannot be used for all cell search scenarios, and its scalability and adaptability are relatively low in actual use.

[0004] There is still no effective solution to the problem of low efficiency in determining the center frequency of the synchronization signal block in related technologies. Summary of the Invention

[0005] This application provides a method and apparatus for determining the center frequency of a synchronization signal block, a storage medium, and an electronic device, to at least solve the problem of low efficiency in determining the center frequency of a synchronization signal block in related technologies.

[0006] According to one embodiment of this application, a method for determining the center frequency of a synchronization signal block is provided, comprising: acquiring 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 matching 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 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 center frequency of the synchronization signal block of the target frequency band based on the target synchronization signal block frequency range; and converting the center frequency of the synchronization signal block into the center frequency point of the synchronization signal block of the target frequency band.

[0007] Optionally, determining the target synchronization signal block frequency range matched by 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 includes: calculating a target frequency value based on 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; and determining the target synchronization signal block frequency range based on the target frequency value, the first association relationship, and the second association relationship.

[0008] Optionally, determining the target synchronization signal block frequency range based on the target frequency value, the first correlation relationship, and the second correlation relationship includes: determining a first synchronization signal block frequency range based on the target frequency value and the first correlation relationship, and determining a second synchronization signal block frequency range based on the target frequency value and the second correlation 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.

[0009] Optionally, determining the frequency range of the first synchronization signal block based on the target frequency value and the first correlation includes: determining the frequency range of the first synchronization signal block using the following formula:

[0010]

[0011]

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

[0013] Optionally, determining the frequency range of the second synchronization signal block based on the target frequency value and the second correlation includes: determining the frequency range of the second synchronization signal block using the following formula:

[0014]

[0015]

[0016] The lower frequency edge SSB of the synchronization signal block is determined by the following formula. start : F SSB2 F is the frequency of the second synchronization signal block. PointA For the target frequency value, F REF For absolute frequency, N RB For the number of resource blocks, This refers to the number of subcarriers contained in each resource block, CORESET0. start CORESET0 is the starting position of the control resource set. end K represents the end position of the control resource set. SSB This is the subcarrier offset.

[0017] Optionally, generating the center frequency of the synchronization signal block based on the target synchronization signal block frequency range includes: constructing a calculation formula for the synchronization signal block reference frequency range using the synchronization signal block frequency range; and performing optimization calculations on the synchronization signal block reference frequency range calculation formula to obtain the center frequency of the synchronization signal block.

[0018] Optionally, the optimization calculation of the synchronization signal block reference frequency range formula to obtain the center frequency of the synchronization signal block includes: calculating the synchronization signal block reference frequency range formula to obtain the parameter range of the 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; and using the target parameter value to solve the reference frequency formula to obtain the center frequency of the synchronization signal block.

[0019] According to another embodiment of this application, a device for determining the center frequency of a synchronization signal block is also provided, comprising: an acquisition module for acquiring a target frequency band, wherein the target frequency band is a frequency band added in a new wireless network; a determination module for determining a target synchronization signal block frequency range matching 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 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 for generating the center frequency of the synchronization signal block of the target frequency band based on the target synchronization signal block frequency range; and a conversion module for converting the center frequency of the synchronization signal block into the center frequency of the synchronization signal block of the target frequency band.

[0020] According to another aspect of the embodiments of this application, a computer-readable storage medium is also provided, wherein a computer program is stored in the computer program, and the computer program is configured to execute the above-described method for determining the center frequency point of the synchronization signal block when it is run.

[0021] According to another aspect of the embodiments of this application, an electronic device is also provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the method for determining the center frequency point of the synchronization signal block through the computer program.

[0022] In this embodiment, a target frequency band is obtained, wherein the target frequency band is a frequency band added in a new wireless network; 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, 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; the 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 a second management relationship between the control resource set and the system bandwidth. Therefore, 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. 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 the synchronization signal block center frequency is converted into the corresponding frequency point identifier to obtain the synchronization signal block center frequency point. By adopting the above technical solution, the problem of low efficiency in determining the center frequency of the synchronization signal block in related technologies is solved, and the technical effect of improving the efficiency of determining the center frequency of the synchronization signal block is achieved. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the hardware environment for a method of determining the center frequency point of a synchronization signal block according to an embodiment of this application;

[0026] Figure 2 This is a flowchart of a method for determining the center frequency of a synchronization signal block according to an embodiment of this application;

[0027] Figure 3 This is an optional device interaction diagram according to an embodiment of this application;

[0028] Figure 4 This is a schematic diagram illustrating an optional target synchronization signal block frequency range determination according to an embodiment of this application;

[0029] Figure 5 This is a schematic diagram of an optional system bandwidth according to an embodiment of this application;

[0030] Figure 6 This is a flowchart of an optional SSB center frequency calculation according to an embodiment of this application;

[0031] Figure 7 This is a schematic diagram of an optional target frequency value conversion according to an embodiment of this application;

[0032] Figure 8 This is a structural block diagram of a device for determining the center frequency of a synchronization signal block according to an embodiment of this application. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0034] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0035] The methods and embodiments provided in this application can be executed on a computer terminal, device terminal, or similar computing device. Taking running on a computer terminal as an example, Figure 1 This is a schematic diagram of the hardware environment for a method of determining the center frequency point of a synchronization signal block according to an embodiment of this application. Figure 1 As shown, a computer terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. In one exemplary embodiment, the computer terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the computer terminal described above. For example, the computer terminal may also include components that are more complex than those described above. Figure 1 The more or fewer components shown, or having the same Figure 1 Equivalent functions or ratios shown Figure 1 The functions shown have more different configurations.

[0036] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the message push sending method in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer programs stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to a computer terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0037] The transmission device 106 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider for the computer terminal. In one example, the transmission device 106 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 106 may be a Radio Frequency (RF) module used for wireless communication with the Internet.

[0038] This embodiment provides a method for determining the center frequency of a synchronization signal block. Figure 2 This is a flowchart of a method for determining the center frequency of a synchronization signal block according to an embodiment of this application. The process includes the following steps:

[0039] Step S202: Obtain the target frequency band, wherein the target frequency band is a frequency band added in the new wireless network;

[0040] Step S204: Determine the target synchronization signal block frequency range matching 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;

[0041] Step S206: Generate the center frequency of the synchronization signal block in the target frequency band based on the target synchronization signal block frequency range.

[0042] Step S208: Convert the center frequency of the synchronization signal block into the center frequency point of the synchronization signal block in the target frequency band.

[0043] Through the above steps, a first correlation 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 acquiring the target frequency band, the target synchronization signal block frequency range matching 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. Then, the center frequency component of the synchronization signal block in the target frequency band can be generated based on this frequency range, and the center frequency of the synchronization signal block is converted into a corresponding frequency point identifier to obtain the center frequency point of the synchronization signal block. This technical solution solves the problem of low efficiency in determining the center frequency point of the synchronization signal block in related technologies, achieving the technical effect of improving the efficiency of determining the center frequency point of the synchronization signal block.

[0044] In the technical solution provided in step S202 above, 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.

[0045] In the technical solution provided in step S204 above, the absolute frequency point number of the target frequency band can be the absolute frequency point number corresponding to the target frequency band determined from the frequency bands and absolute frequency point numbers that have a corresponding relationship.

[0046] 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 it can be obtained by calculating the first synchronization signal block frequency range based on the absolute frequency point number and the first association relationship, and calculating the second synchronization signal block frequency range based on the absolute frequency point number and the second association relationship, and then 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. This solution does not limit this.

[0047] In the technical solution provided in step S206 above, 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 can be determined as the center frequency of the synchronization signal block. This solution does not limit this.

[0048] In the technical solution provided in step S208 above, the center frequency of the synchronization signal block can be calculated, but is not limited to, by the following formula:

[0049] F REF =F REF-Offs +ΔF Global (N–N REF-Offs )

[0050] Among them, F REF ΔF is the center frequency of the synchronization signal block. Global F represents the change in the global frame interval. REF-Offs N indicates the time offset of the FREF signal relative to a specific reference point. REF-Offs The offset of the NR reference signal relative to the boundary of the resource block (RB) is N, where N is the center frequency of the synchronization signal block.

[0051] This application's embodiments can be applied to cell search scenarios when a UE wants to access an NR network, wherein the UE device can be, but is not limited to, mobile phones, smart wearable devices, tablets, etc. Figure 3 This is an optional device interaction diagram according to an embodiment of this application, such as... Figure 3 As shown, when a user equipment accesses the NR network, it performs a cell search to access the NR network.

[0052] As an optional embodiment, determining the target synchronization signal block frequency range matching 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 includes:

[0053] The target frequency value is calculated based on 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;

[0054] The target synchronization signal block frequency range is determined based on the target frequency value, the first correlation, and the second correlation.

[0055] Optionally, in this embodiment, the target frequency value can be calculated using the following formula:

[0056]

[0057] Among them, F REF It is the frequency representation of the given uplink and downlink center frequencies, N RB That is the number of RBs corresponding to the bandwidth. This refers to the number of subcarriers contained in each RB. The current configuration has a fixed size of 12, and Δf = 2. μ ·15[kHz], currently μ is set to 1, i.e. Δf=30(KHz), F PointA The target frequency value.

[0058] Optionally, in this embodiment, the target synchronization signal block frequency range can be obtained by optimizing the first correlation relationship and the second correlation relationship using the target frequency value, or it can be obtained by calculating the first synchronization signal block frequency range based on the target frequency value and the first correlation relationship, and calculating the second synchronization signal block frequency range based on the absolute frequency point number and the second correlation relationship, and then 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. This solution does not limit this.

[0059] As an optional embodiment, determining the target synchronization signal block frequency range based on the target frequency value, the first correlation relationship, and the second correlation relationship includes:

[0060] The frequency range of the first synchronization signal block is determined based on the target frequency value and the first correlation relationship, and the frequency range of the second synchronization signal block is determined based on the target frequency value and the second correlation relationship.

[0061] The target synchronization signal block frequency range is obtained by taking the intersection of the frequency range of the first synchronization signal block and the frequency range of the second synchronization signal block.

[0062] Optionally, in this embodiment, in order to satisfy the requirement that the entire bandwidth of the SSB must be within the system bandwidth, and to satisfy the constraint relationship between the SSB, CORESET0, and the entire system bandwidth, the intersection of the frequency range of the first synchronization signal block and the frequency range of the second synchronization signal block is taken, so that the calculated SSB simultaneously satisfies the above conditions. Figure 4 This is a schematic diagram illustrating an optional target synchronization signal block frequency range determination according to an embodiment of this application, as shown below. Figure 4 As shown, the frequency range of the first synchronization signal block is determined according to the target frequency value and the first correlation relationship, and the frequency range of the second synchronization signal block is determined according to the target frequency value and the second correlation relationship. By taking the intersection of the two synchronization signal frequency ranges, the frequencies of the synchronization signal blocks in the final obtained frequency range all satisfy the constraint conditions.

[0063] 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 range.

[0064] Optionally, in this embodiment, when determining the frequency range of the second synchronization signal block, the relationship between SSB, CORESET0 (control resource set), and the full bandwidth needs to be considered. Figure 5 This is a schematic diagram of an optional system bandwidth according to an embodiment of this application, such as... Figure 5 As shown in the diagram, the meaning and settings of offset in the above figure can be found in Chapter 13 of Protocol 38.213. For example, in our current implementation, we have selected a configuration where both SSB and PDCCH are 30kHz. The parameters are selected according to Table 1:

[0065] Table 1

[0066]

[0067] The starting position of CORESET0 in the frequency domain must be greater than PointA, and the ending position must be lower than the maximum value of the system bandwidth frequency. The bandwidth of CORESET0 is expressed as follows, which can be obtained by setting the index and querying the table above.

[0068] As an optional embodiment, determining the frequency range of the first synchronization signal block based on the target frequency value and the first correlation includes:

[0069] The frequency range of the first synchronization signal block is determined by the following formula:

[0070]

[0071]

[0072] Among them, SSB startF is the lower edge of the frequency of the synchronization signal block. SSB1 F is the frequency of the first synchronization signal block. PointA For the target frequency value, SSB end F is the upper edge of the frequency of the synchronization signal block. REF For absolute frequency, N RB For the number of resource blocks, This refers to the number of subcarriers contained in each resource block.

[0073] As an optional embodiment, determining the frequency range of the second synchronization signal block based on the target frequency value and the second correlation includes:

[0074] The frequency range of the second synchronization signal block is determined by the following formula:

[0075]

[0076]

[0077] The lower frequency edge SSB of the synchronization signal block is determined by the following formula. start SSB start =F SSB2 - F SSB2 F is the frequency of the second synchronization signal block. PointA For the target frequency value, F REF For absolute frequency, N RB For the number of resource blocks, This refers to the number of subcarriers contained in each resource block, CORESET0. start CORESET0 is the starting position of the control resource set. end K represents the end position of the control resource set. SSB This is the subcarrier offset.

[0078] Optionally, in this embodiment, the protocol specifies K SSB The subcarrier spacing is Δf' = 15kHz, K SSB The value range is 0 to 23. Then, the channel grid conditions must be met. The step size varies for different frequency bands. Table 2 shows an optional channel grid table according to an embodiment of this application.

[0079] Table 2

[0080]

[0081]

[0082]

[0083]

[0084] As an optional embodiment, generating the center frequency of the synchronization signal block based on the target synchronization signal block frequency range includes:

[0085] The synchronization signal block reference frequency range calculation formula is constructed using the aforementioned synchronization signal block frequency range.

[0086] The center frequency of the synchronization signal block is obtained by performing optimization calculations on the formula for calculating the reference frequency range of the synchronization signal block.

[0087] Optionally, in this embodiment, the center frequency of the synchronization signal block must meet the synchronization grid condition, and the formula for calculating the reference frequency range of the synchronization signal block can be based on this condition. Table 3 is an optional correspondence table between GSCN values ​​and frequencies according to an embodiment of this application, as shown in Table 3:

[0088] Table 3

[0089]

[0090] Furthermore, a formula for calculating 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 based on the current frequency range, thereby constructing a formula for calculating the reference frequency range of the synchronization signal block.

[0091] As an optional embodiment, the optimization calculation of the reference frequency range calculation formula of the synchronization signal block to obtain the center frequency of the synchronization signal block includes:

[0092] The calculation formula for the reference frequency range of the synchronization signal block is performed to obtain the parameter range of the target parameter, wherein the target parameter is used to represent the offset of the reference frequency relative to the target reference point;

[0093] The minimum parameter value within the parameter range is determined as the target parameter value;

[0094] The center frequency of the synchronization signal block is obtained by solving the reference frequency calculation formula using the target parameter value.

[0095] Optionally, in this embodiment, according to Table 5.4.3.1 of Communication Protocol 38.101, when the frequency range is 0–3000MHz, the corresponding formula is N*1200kHz+M*50kHz, where the target parameters include N and M. When the frequency range is 3000–24250MHz, the corresponding formula is 3000MHz+N*1.44MHz, where the target parameters include N.

[0096] Optionally, in this embodiment, after calculating the target parameters, they are substituted into the corresponding SS Block frequency position SSREF calculation formula recorded in Table 5.4.3.1 of the communication protocol 38.101 to obtain the center frequency of the synchronization signal block.

[0097] In this application, when the uplink and downlink center frequencies are known, F REF It is known; the bandwidth is known, N RB It is also known that the index of CORESET0 can be set in advance, so the offset and... All of these are known. F SSB Combining Tables 5.4.3.1-1 and 5.4.2.1-1, and expressing the values ​​using N (or N and M), we can derive the range of values ​​for N by ensuring that the entire bandwidth of the SSB is within the system bandwidth, satisfying the constraints between the SSB, CORESET0, and the entire system bandwidth, and meeting the requirements for the channel grid and synchronization grid step sizes. Generally, the minimum value of N is taken as the center frequency of the SSB in actual use. Figure 6 This is a flowchart of an optional SSB center frequency calculation according to an embodiment of this application, such as... Figure 6 As shown, it includes at least the following steps:

[0098] S601, obtain the target frequency value of the corresponding uplink and downlink center frequency point;

[0099] S602, the entire bandwidth of the SSB must be within the system bandwidth range.

[0100] The frequency domain of the SSB is fixed at 20 RBs, therefore,

[0101] The lower edge of the SSB frequency is represented as...

[0102] The upper edge of the SSB frequency is represented as

[0103] S603, the starting position of CORESET0 in the frequency domain must be greater than PointA, and the ending position must be lower than the maximum system bandwidth frequency. The bandwidth of CORESET0 is expressed as... The starting position of CORESET0 can be represented as:

[0104]

[0105] The end position of CORESET0 can be represented as:

[0106]

[0107] S604, since the calculated SSB center frequency needs to meet the channel grid condition and the synchronization grid condition, therefore, by combining Table 5.4.2.3-1 and Table 5.4.3.1 of Communication Protocol 38.101, we can then return to the range of values ​​for N.

[0108] S605, take the minimum value of N and convert N to SS. REF .

[0109] In practical applications, the uplink and downlink center frequencies are represented as N. REF The target frequency value is obtained by converting it. Figure 7 This is a schematic diagram of an optional target frequency value conversion according to an embodiment of this application, such as... Figure 7 As shown:

[0110] The uplink and downlink center frequencies are represented as N. REF The center frequency we usually use is expressed as frequency, which involves the conversion between frequency and ARFCN, and thus the concept of a frequency grid. Frequency point F is obtained from the following formula and section 5.4.2.1 of protocol 38.101. REF :

[0111] F REF =F REF-Offs +ΔF Global (N REF –N REF-Offs )

[0112] Table 4 is an optional frequency grid table according to an embodiment of this application.

[0113] Table 4

[0114]

[0115] Different frequency ranges require different values ​​to be substituted into the formula for calculation. Point A's frequency is calculated by subtracting half the bandwidth from the uplink and downlink center frequencies, i.e.:

[0116]

[0117] Where F REF It is the frequency representation of the given uplink and downlink center frequencies, N RB That is the number of RBs corresponding to the bandwidth. This refers to the number of subcarriers contained in each RB. The current configuration has a fixed size of 12, and Δf = 2. μ ·15[kHz], currently μ is 1, that is, Δf=30(KHz).

[0118] The number of RBs corresponding to different bandwidths is shown in Table 5:

[0119] Table 5

[0120]

[0121] To better understand the above process, the following description will be based on optional embodiments, but these are not intended to limit the technical solutions of the embodiments of this application.

[0122] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software and necessary general-purpose hardware platforms, and of course, they 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 this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of this application.

[0123] Figure 8 This is a structural block diagram of a device for determining the center frequency point of a synchronization signal block according to an embodiment of this application; as shown below. Figure 8 As shown, it includes:

[0124] Acquisition module 82 is used to acquire a target frequency band, wherein the target frequency band is a frequency band added in the new wireless network;

[0125] The determining module 84 is used to determine the target synchronization signal block frequency range matching 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 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;

[0126] The generation module 86 is used to generate the center frequency of the synchronization signal block of the target frequency band according to the target synchronization signal block frequency range;

[0127] The conversion module 88 is used to convert the center frequency of the synchronization signal block into the center frequency point of the synchronization signal block in the target frequency band.

[0128] Through the above embodiments, a first correlation exists between the synchronization signal block and the system bandwidth, and a second management relationship exists between the control resource set and the system bandwidth. Therefore, after acquiring the target frequency band, the target synchronization signal block frequency range matching 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. Then, the center frequency component of the synchronization signal block in the target frequency band can be generated based on this frequency range, and the center frequency of the synchronization signal block is converted into a corresponding frequency point identifier to obtain the center frequency point of the synchronization signal block. By adopting the above technical solution, the problem of low efficiency in determining the center frequency point of the synchronization signal block in related technologies is solved, achieving the technical effect of improving the efficiency of determining the center frequency point of the synchronization signal block.

[0129] Optionally, the determining module includes:

[0130] A calculation unit is used to calculate a target frequency value based on 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;

[0131] The determining unit is used to determine the frequency range of the target synchronization signal block based on the target frequency value, the first correlation relationship, and the second correlation relationship.

[0132] Optionally, the determining unit is used for:

[0133] The frequency range of the first synchronization signal block is determined based on the target frequency value and the first correlation relationship, and the frequency range of the second synchronization signal block is determined based on the target frequency value and the second correlation relationship.

[0134] The target synchronization signal block frequency range is obtained by taking the intersection of the frequency range of the first synchronization signal block and the frequency range of the second synchronization signal block.

[0135] Optionally, the determining unit is used for:

[0136] The frequency range of the first synchronization signal block is determined by the following formula:

[0137]

[0138]

[0139] Among them, SSB start F is the lower edge of the frequency of the synchronization signal block. SSB1 F is the frequency of the first synchronization signal block. PointA For the target frequency value, SSBend F is the upper edge of the frequency of the synchronization signal block. REF For absolute frequency, N RB For the number of resource blocks, This refers to the number of subcarriers contained in each resource block.

[0140] Optionally, the determining unit is used for:

[0141] The frequency range of the second synchronization signal block is determined by the following formula:

[0142]

[0143]

[0144] The lower frequency edge SSB of the synchronization signal block is determined by the following formula. start : F SSB2 F is the frequency of the second synchronization signal block. PointA For the target frequency value, F REF For absolute frequency, N RB For the number of resource blocks, This refers to the number of subcarriers contained in each resource block, CORESET0. start CORESET0 is the starting position of the control resource set. end K represents the end position of the control resource set. SSB This is the subcarrier offset.

[0145] Optionally, the generation module includes:

[0146] The construction unit is used to construct a calculation formula for the reference frequency range of the synchronization signal block using the frequency range of the synchronization signal block;

[0147] The calculation unit is used to perform optimization calculations on the calculation formula of the reference frequency range of the synchronization signal block to obtain the center frequency of the synchronization signal block.

[0148] Optionally, the computing unit is used for:

[0149] The calculation formula for the reference frequency range of the synchronization signal block is performed to obtain the parameter range of the target parameter, wherein the target parameter is used to represent the offset of the reference frequency relative to the target reference point;

[0150] The minimum parameter value within the parameter range is determined as the target parameter value;

[0151] The center frequency of the synchronization signal block is obtained by solving the reference frequency calculation formula using the target parameter value.

[0152] Embodiments of this application also provide a storage medium including a stored program, wherein the program, when executed, performs the method for determining the center frequency of any of the above-mentioned synchronization signal blocks.

[0153] Optionally, in this embodiment, the storage medium may be configured to store program code for performing the following steps: obtaining a target frequency band, wherein the target frequency band is a frequency band added in the new wireless network;

[0154] Based on the absolute frequency point number of the target frequency band, the first association relationship and the second association relationship determine 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;

[0155] The center frequency of the synchronization signal block in the target frequency band is generated based on the target synchronization signal block frequency range.

[0156] The center frequency of the synchronization signal block is converted to the center frequency point of the synchronization signal block in the target frequency band.

[0157] Embodiments of this application also provide 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 perform the steps in any of the above embodiments of the method for determining the center frequency point of a synchronization signal block.

[0158] 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.

[0159] Optionally, in this embodiment, the processor can be configured to perform the following steps via a computer program: acquiring a target frequency band, wherein the target frequency band is a frequency band added in the new wireless network;

[0160] Based on the absolute frequency point number of the target frequency band, the first association relationship and the second association relationship determine 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;

[0161] The center frequency of the synchronization signal block in the target frequency band is generated based on the target synchronization signal block frequency range.

[0162] The center frequency of the synchronization signal block is converted to the center frequency point of the synchronization signal block in the target frequency band.

[0163] Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0164] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated here.

[0165] Obviously, those skilled in the art should understand that the modules or steps of this application described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. Optionally, they can be implemented using computer-executable program code, thereby storing them in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those presented here, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, this application is not limited to any particular combination of hardware and software.

[0166] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A method for determining the center frequency of a synchronization signal block, characterized in that, include: Obtain the target frequency band, wherein the target frequency band is a frequency band added in the new wireless network; Based on the absolute frequency point number of the target frequency band, the first association relationship and the second association relationship determine 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; The center frequency of the synchronization signal block in the target frequency band is generated based on the target synchronization signal block frequency range. The center frequency of the synchronization signal block is converted to the center frequency point of the synchronization signal block in the target frequency band.

2. The method according to claim 1, characterized in that, The step of determining the target synchronization signal block frequency range matching 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 includes: The target frequency value is calculated based on 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; The target synchronization signal block frequency range is determined based on the target frequency value, the first correlation, and the second correlation.

3. The method according to claim 2, characterized in that, Determining the target synchronization signal block frequency range based on the target frequency value, the first correlation relationship, and the second correlation relationship includes: The frequency range of the first synchronization signal block is determined based on the target frequency value and the first correlation relationship, and the frequency range of the second synchronization signal block is determined based on the target frequency value and the second correlation relationship. The target synchronization signal block frequency range is obtained by taking the intersection of the frequency range of the first synchronization signal block and the frequency range of the second synchronization signal block.

4. The method according to claim 3, characterized in that, Determining the frequency range of the first synchronization signal block based on the target frequency value and the first correlation includes: The frequency range of the first synchronization signal block is determined by the following formula: SSB start = F SSB1 - 20 / 2 ≥F PointA SSB end = F SSB1 + 20 / 2 ≤ F REF (kHz) + N RB / 2 Among them, SSB start F is the lower edge of the frequency of the synchronization signal block. SSB1 F is the frequency of the first synchronization signal block. PointA For the target frequency value, SSB end F is the upper edge of the frequency of the synchronization signal block. REF For absolute frequency, N RB For the number of resource blocks, This refers to the number of subcarriers contained in each resource block. This refers to the subcarrier spacing of the SSB channel.

5. The method according to claim 3, characterized in that, Determining the frequency range of the second synchronization signal block based on the target frequency value and the second correlation includes: The frequency range of the second synchronization signal block is determined by the following formula: CORESET0 start = SSB start - K SSB - offset ≥ F PointA ; CORESET0 end = SSB start - K SSB - offset + ≤F REF (kHz) + N RB / 2 ; The lower frequency edge SSB of the synchronization signal block is determined by the following formula. start SSB start = F SSB2 - 20 / 2 F SSB2 F is the frequency of the second synchronization signal block. PointA For the target frequency value, F REF For absolute frequency, N RB For the number of resource blocks, This refers to the number of subcarriers contained in each resource block, CORESET0. start CORESET0 is the starting position of the control resource set. end K represents the end position of the control resource set. SSB For subcarrier offset, The subcarrier spacing of the SSB channel. The subcarrier spacing of KSSB.

6. The method according to claim 1, characterized in that, The step of generating the center frequency of the synchronization signal block based on the target synchronization signal block frequency range includes: The synchronization signal block reference frequency range calculation formula is constructed using the aforementioned synchronization signal block frequency range. The center frequency of the synchronization signal block is obtained by performing optimization calculations on the formula for calculating the reference frequency range of the synchronization signal block.

7. The method according to claim 6, characterized in that, The optimization calculation of the reference frequency range of the synchronization signal block to obtain the center frequency of the synchronization signal block includes: The calculation formula for the reference frequency range of the synchronization signal block is performed to obtain the parameter range of the target parameter, wherein the target parameter is used to represent the offset of the reference frequency relative to the target reference point; The minimum parameter value within the parameter range is determined as the target parameter value; The center frequency of the synchronization signal block is obtained by solving the reference frequency calculation formula using the target parameter value.

8. A device for determining the center frequency of a synchronization signal block, characterized in that, include: An acquisition module is used to acquire a target frequency band, wherein the target frequency band is a frequency band added in the new wireless network; The determining module is used to determine the target synchronization signal block frequency range matching 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 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; The generation module is used to generate the center frequency of the synchronization signal block of the target frequency band according to the target synchronization signal block frequency range; The conversion module is used to convert the center frequency of the synchronization signal block into the center frequency point of the synchronization signal block in the target frequency band.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein the program, when executed, performs the method of any one of claims 1 to 7.

10. An electronic device comprising a memory and a processor, characterized in that, The memory stores a computer program, and the processor is configured to execute the method of any one of claims 1 to 7 through the computer program.

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