Method and device for determining frequency domain position of synchronization signal block (SSB)

Abstract

Provided in an embodiment of the present application are a method and device for determining a synchronization signal block SSB frequency domain position, the method comprising: determining a position of a first synchronization grid in a target bandwidth, the first synchronization grid being used for determining a frequency domain position of a synchronization signal block SSB in the target bandwidth, the position of the first synchronization grid in the target bandwidth is associated with one or more of the following information: subcarrier spacing of the SSB, the size of the target bandwidth, the size of a reserved bandwidth located at the boundary of the target bandwidth, and information of a first channel in the target bandwidth, and the frequency range of the first channel is not overlapped with the SSB; the frequency domain position of the SSB is determined according to the position of the first synchronization grid in the target bandwidth, and by adopting the method and the device, the frequency domain position of the SSB can be determined according to the position of the first synchronization grid in the target bandwidth in the NR-U high-frequency bandwidth range, so that the SSB is searched.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method and device for determining the frequency domain position of a synchronization signal block (SSB). Background Art

[0002] The positions of the currently defined synchronization grids are mainly designed according to the needs of the licensed spectrum. The intervals between the synchronization grids are 1.2 MHz, 1.44 MHz or 17.28 MHz, corresponding to the frequency ranges of 0-3 GHz, 3-24.25 GHz and 24.25-100 GHz, respectively. At present, in the licensed frequency bands below 7 GHz, in order to flexibly support various channel bandwidths and the use of licensed spectrum, the number of synchronization grids defined in the new radio (NR) system is relatively large. For the control interface (new radio in unlicensed spectrum, NR-U) system working in the unlicensed frequency band, since the channel bandwidth and position are relatively fixed, it is not necessary to define too many synchronization grids within a given channel range. Compared with the relatively dense synchronization grids designed in the original NR system, there are fewer synchronization grids in the NR-U system to reduce the complexity of the terminal searching for SSB. Based on this consideration, only one synchronization grid position is reserved in each channel bandwidth as the synchronization grid of the NR-U system. For example, as unlicensed frequency bands n46 and n96, only part of the synchronization grid is allowed within the frequency band, which is spaced at about 20MHz. In the subsequent technical evolution, how to determine the position of the allowed synchronization grid in the high-frequency bandwidth range of NR-U, for example, 52.6GHz-71GHz, so as to search for SSB is a technical problem that people in this field are solving. Summary of the invention

[0003] An embodiment of the present application discloses a method and device for determining the frequency domain position of a synchronization signal block SSB. By using the embodiment of the present application, the frequency domain position of SSB can be determined according to the position of the first synchronization grid in the target bandwidth within the NR-U high frequency bandwidth, thereby searching for SSB.

[0004] A first aspect of an embodiment of the present application discloses a method for determining a frequency domain position of a synchronization signal block SSB, which is applied to a terminal and includes:

[0005] Determine a position of a first synchronization grid within a target bandwidth, wherein the first synchronization grid is used to determine a frequency domain position of a synchronization signal block SSB within the target bandwidth, wherein the position of the first synchronization grid within the target bandwidth is associated with one or more of the following information:

[0006] The subcarrier spacing of the SSB, the size of the target bandwidth, the size of the reserved bandwidth located at the boundary of the target bandwidth, and information of a first channel within the target bandwidth, wherein the frequency range of the first channel does not overlap with the SSB;

[0007] The frequency domain position of the SSB is determined according to the position of the first synchronization grid within the target bandwidth.

[0008] A second aspect of an embodiment of the present application discloses a method for determining a frequency domain position of a synchronization signal block SSB, which is applied to a network device, including:

[0009] A synchronization signal block SSB is sent, wherein the frequency domain position of the SSB is associated with a first synchronization grid, wherein the first synchronization grid is associated with one or more of the following information:

[0010] The subcarrier spacing of the SSB, the size of the target bandwidth, the size of the reserved bandwidth located at the boundary of the target bandwidth, and information of a first channel within the target bandwidth, wherein the frequency range of the first channel does not overlap with the SSB.

[0011] The third aspect of the embodiments of the present application discloses a terminal having some or all functions for implementing the terminal behavior in the above method. For example, the functions of the terminal may have the functions of some or all of the embodiments in the present application, or may have the functions of implementing any one of the embodiments in the present application separately. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0012] In a possible design, the terminal includes a processing unit, which is configured to support the terminal to perform the corresponding functions in the above method. The terminal may also include a communication unit, which is used to support communication between the terminal and other units or devices. The terminal may also include a storage unit, which is used to couple with the processing unit and store necessary program instructions and data for the terminal. Optionally, the processing unit may be a processor, the communication unit may be a transceiver, and the storage unit may be a memory.

[0013] A fourth aspect of the embodiments of the present application discloses a network device, which has some or all functions of implementing the network device behavior in the above method, such as the functions of the network device can have the functions of some or all of the embodiments in the present application, or can have the functions of implementing any one of the embodiments in the present application separately. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0014] In a possible design, the network device includes a processing unit, which is configured to support the network device to perform corresponding functions in the above method. The network device may also include a communication unit, which is used to support communication between the network device and other units or devices. The network device may also include a storage unit, which is used to couple with the processing unit and store necessary program instructions and data for the network device. Optionally, the processing unit may be a processor, the communication unit may be a transceiver, and the storage unit may be a memory.

[0015] The fifth aspect of the embodiment of the present application discloses a terminal, including a processor and a memory. Optionally, the terminal may also include a transceiver, wherein the memory is used to store a computer program or instruction, and the processor is used to call the computer program or instruction stored in the memory, so that the device implements the method described in the first aspect.

[0016] The sixth aspect of the embodiment of the present application discloses a network device, including a processor and a memory. Optionally, the network device may also include a transceiver, wherein the memory is used to store a computer program or instruction, and the processor is used to call the computer program or instruction stored in the memory, so that the device implements the method described in the second aspect.

[0017] A seventh aspect of an embodiment of the present application discloses a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction is executed on a processor, the method described in the first aspect is implemented.

[0018] An eighth aspect of an embodiment of the present application discloses a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction runs on a processor, the method described in the second aspect above is implemented.

[0019] The ninth aspect of the embodiment of the present application discloses a computer program product, which includes computer program codes or instructions, and when the computer program codes or instructions are executed on a computer, the method described in the first aspect is implemented. The computer program product can be a software installation package.

[0020] The tenth aspect of the embodiment of the present application discloses a computer program product, wherein the computer program product includes computer program codes or instructions, and when the computer program codes or instructions are executed on a computer, the method described in the second aspect is implemented. The computer program product may be a software installation package.

[0021] In the solution provided in the embodiment of the present application, the terminal can determine the frequency domain position of the SSB within the NR-U high-frequency bandwidth according to the position of the first synchronization grid within the target bandwidth, thereby searching for the SSB. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1a is a schematic diagram of a communication system provided in an embodiment of the present application;

[0023] Figure 1b is a schematic diagram of an SSB provided in an embodiment of the present application;

[0024] Figure 1c It is a schematic diagram of time division multiplexing of SSB and CORESET#0 in the time domain provided by an embodiment of the present application;

[0025] Figure 1d It is a schematic diagram of frequency division multiplexing of SSB and CORESET#0 in the frequency domain provided by an embodiment of the present application;

[0026] Figure 2 It is a schematic diagram of a method for determining a synchronization signal block SSB frequency domain position provided by an embodiment of the present application;

[0027] Figure 3-Figure 42 is a schematic diagram of a position of a first synchronization grid within a target bandwidth provided by an embodiment of the present application;

[0028] Fig.43 is a schematic diagram of a position of a second synchronization grid within a target bandwidth provided by an embodiment of the present application;

[0029] Fig.44 is a schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0030] Fig.45 It is a structural diagram of a network device provided in an embodiment of the present application;

[0031] Fig.46 is a schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0032] Fig.47 It is a structural diagram of a network device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0034] Figure 1aThe communication system involved in the present application is shown. The communication system can operate in a high frequency band and can be a fifth generation mobile communication (5G) system, a new radio (NR) system, a machine to machine (M2M) system, etc. Figure 1a As shown, the communication system 100 may include: one or more network devices 101 and one or more terminals 102 . Figure 1a Only one network device 101 and one terminal 102 are shown as examples. Wherein: the network device 101 can be a base station, which can be used to communicate with one or more terminals, or can be used to communicate with one or more base stations with partial terminal functions (such as communication between a macro base station and a micro base station, such as an access point). The base station can be a base transceiver station (Base TransceiverStation, BTS) in a Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, or an evolutionary base station (Evolutional Node B, eNB) in a Long Term Evolution (LTE) system, and a base station gNB in ​​a 5G system and a NR system. In addition, the base station can also be an access point (Access Point, AP), a transmission node (Trans TRP), a central unit (Central Unit, CU) or other network entities, and can include some or all of the functions of the above network entities. The terminal 102 can be distributed throughout the communication system 100, and can be stationary or mobile. In some embodiments of the present application, the terminal 102 may be a mobile device (such as a smart phone), a mobile station, a mobile unit, an M2M terminal, a wireless unit, a remote unit, a user agent, a user equipment (UE) mobile client, etc.

[0035] Need to explain, Figure 1a The communication system 100 shown is only for more clearly illustrating the technical solution of the present application and does not constitute a limitation of the present application. A person skilled in the art can appreciate that with the evolution of network architecture and the emergence of new business scenarios, the technical solution provided by the present application is also applicable to similar technical problems.

[0036] The following is an introduction to the relevant technologies involved in this application.

[0037] 1) NR-U technology: Unlicensed spectrum is a spectrum that can be used for radio equipment communication divided by countries and regions. This spectrum is generally considered to be a shared spectrum, that is, communication equipment in different communication systems can use this spectrum as long as they meet the regulatory requirements set by the country or region on the spectrum, without applying for exclusive spectrum authorization from the government. In order to allow various communication systems that use unlicensed spectrum for wireless communication to coexist in a friendly manner on this spectrum, some countries or regions have stipulated regulatory requirements that must be met when using unlicensed spectrum. For example, in Europe, communication equipment follows the "Listen Before Talk" (LBT) principle, that is, before a communication device sends a signal on a channel of unlicensed spectrum, it needs to first perform channel sensing. Only when the channel sensing result is that the channel is idle, the communication device can send a signal; if the channel sensing result of the communication device on the channel of unlicensed spectrum is that the channel is busy, the communication device cannot send a signal. And in order to ensure fairness, in one transmission, the duration of the communication device using the channel of unlicensed spectrum for signal transmission cannot exceed the maximum channel occupancy time (MCOT).

[0038] 2) Synchronization Signal and PBCH Block (SSB) in NR: It is composed of three parts: Primary Synchronization Signals (PSS), Secondary Synchronization Signals (SSS), and Physical Broadcast Channel (PBCH). Figure 1bAs shown in the figure, one SSB contains one symbol of PSS, one symbol of SSS and two symbols of PBCH. Among them, the time-frequency resources occupied by PBCH include the demodulation reference signal (DMRS), which is used for demodulation of PBCH. SSB occupies a total of 4 orthogonal frequency division multiplexing (OFDM) symbols in the time domain, numbered in ascending order from 0 to 3, and occupies a total of 240 subcarriers in the frequency domain, that is, 20 physical resource blocks (PRBs), and the subcarriers are numbered from 0 to 239. PSS is located in the middle 127 subcarriers of symbol 0. SSS is located in the middle 127 subcarriers of symbol 2; in order to protect PSS and SSS, they have different subcarrier Set 0 at both ends. PBCH is located in symbol 1 / 3 and symbol 2, where symbol 1 / 3 occupies all subcarriers from 0 to 239, and symbol 2 occupies all subcarriers except the subcarriers occupied by SSS and the subcarrier Set 0 protecting SSS. DMRS is located in the middle of PBCH, on symbol 1 / 3, with 60 DMRS in each symbol and an interval of 4 subcarriers.

[0039] NR uses beam scanning to cover the service range of the entire cell. Beam scanning refers to sending physical channels or reference signals using beams in different directions at different times. A cell usually needs to send multiple SSBs to complete a beam scan, and the SSBs required to complete a beam scan constitute an SSB burst set (SS / PBCH burst set). An SSB is used to carry the synchronization signal and broadcast channel of a beam. Therefore, an SSB burst set can contain beam signals of the number of SSBs in the cell. The maximum number of SSBs, L, is related to the frequency band of the system, as follows: when the frequency band of the system is below 3GHz, L is 6; when the frequency band of the system is in the range of 3GHz-6GHz, L is 8; when the frequency band of the system is in the range of 6GHz-52.6GHz, L is 8.

[0040] All SSBs in the SSB burst set are sent within a 5 millisecond (ms) time window and are repeatedly sent at a certain period. The period is configured through high-level parameters. The period can be 5ms, 10ms, 20ms, 40ms, 80ms, 160ms, and the period will be indicated in System Information Block Type 1 (SIB1). For the UE, after receiving the SSB, the index of the SSB is determined. The index of the SSB corresponds to the relative position of the SSB in the 5ms time window. The UE performs time-frequency synchronization based on the index of the SSB and the half-frame indication carried in the PBCH. Among them, the index of the SSB is indicated by the DMRS of the PBCH or the information carried by the PBCH.

[0041] 3) Synchronization grid: For the wireless spectrum in NR, the frequency domain position of SSB is determined by the synchronization grid, as shown in Table 1. Table 1 shows the corresponding synchronization grids in different frequency ranges. In the range of 0-3000MHz, the synchronization grid is 1200kHz; in the range of 3000-24250MHz, the synchronization grid is 1.44MHz; in the range of 24250-100000MHz, the synchronization grid is 17.28MHz.

[0042] There are many possible frequency domain locations for SSB in NR. NR has a series of Global Synchronization Channel Numbers (GSCNs). GSCNs are channel numbers used to mark SSBs. Each GSCN corresponds to a frequency domain location of an SSB. REF , GSCNs are numbered in increasing order in the frequency domain. After determining the synchronization grid, the resource mapping of the SSB can be shown in Table 2. The synchronization grid is located at the resource element (RE) numbered 0 in the PRB numbered 10 among the 20 PRBs of the SSB. The system will place the SSB on these GSCNs, and the UE will blindly detect the SSB one by one on these GSCNs.

[0043] Table 1

[0044]

[0045]

[0046] Resource element index 0 <![CDATA[Physical resource block number n of SSB PRB > <![CDATA[n PRB =10]]>

[0047] Table 2

[0048]

[0049]

[0050] In the FR1 and FR2 frequency ranges, for each operating frequency band, the range of GSCN is shown in Table 3. NR divides the time domain position of SSB into five different cases according to the subcarrier spacing, namely Case A, Case B, Case C, Case D, and Case E, and the corresponding subcarrier spacings are 15kHz, 30kHz, 30kHz, 120kHz, and 240kHz, respectively. For example, for the operating frequency band n77, the GSCN number range is 7711-8329, with a total of 619 synchronization grids.

[0051] Table 3

[0052]

[0053]

[0054] The currently defined synchronization grids are mainly designed based on the needs of the licensed spectrum. The intervals between synchronization grids are 1.2MHz, 1.44MHz or 17.28MHz, corresponding to the frequency ranges of 0-3GHz, 3-24.25GHz and 24.25-100GHz, respectively. The reason for the small intervals between synchronization grids is that the licensed frequency band supports different channel bandwidths and frequency band allocations, and it is necessary to allow SSB to be sent in as many locations as possible to deploy cells. However, for unlicensed spectrum, its channel bandwidth is 20MHz, and it is shared by multiple operators, so there is no need to define many synchronization grid positions in the channel bandwidth of 20MHz. In order to flexibly support various channel bandwidths and the use of licensed spectrum, the number of synchronization grids defined in the NR system is relatively large. In the NR-U system, the position of the synchronization grid where the SSB is located is redefined. For the NR-U system, since the channel bandwidth and position are relatively fixed, not too many synchronization grids are required within a given channel range. Compared with the NR system, the number of synchronization grids in the NR-U system is smaller to reduce the complexity of UE searching for SSB. Based on this consideration, only one synchronization grid position is reserved in each channel bandwidth as the synchronization grid of the NR-U system. As shown in Table 3 above, as unlicensed frequency bands n46 and n96, only some synchronization grids are allowed within the frequency band, which are spaced at about 20MHz.

[0055] 4) During the initial cell search process, for the initial access UE, a common search space (CommonSearchSpace) needs to be defined for receiving public control information. For this purpose, the concept of control resource set (CORESET) is introduced. CORESET is defined as a resource set used to carry control information. The UE obtains the system information block (MIB) information through PBCH, including frequency, system frame number (SFN) and subcarrier spacing, etc. However, this information is not enough for the UE to further perform random access, so the UE needs to continue to receive SIB1 information, which is scheduled by the downlink control information (DCI) of the physical downlink control channel (PDCCH) and transmitted in the physical downlink shared channel (PDSCH). Specifically, the PDCCH common search space type for scheduling SIB1 is Type0-PDCCH, and the CORESET associated therewith is CORESET#0, wherein CORESET#0 is a control resource set of Type0-PDCCH, and CORESET#0 is used to carry DCI scheduling information of SIB1.

[0056] SSB and CORESET#0 are time-division multiplexed in the time domain. Figure 1c As shown in Figure 1, SSB and CORESET#0 are located on different symbols in the time domain, and the frequency range of CORESET#0 includes SSB. SSB and CORESET#0 are frequency-division multiplexed in the frequency domain. Figure 1d shown.

[0057] Currently in the NR system, the channel bandwidth is designed to be 20MHz, the subcarrier spacing is 15KHz and 30KHz, and the position of the allowed synchronization grid is designed based on factors such as the channel bandwidth and the subcarrier spacing. However, in the NR-U system, especially in the high frequency band of the NR-U system, the channel environment has changed greatly, and the original synchronization grid design is no longer applicable. For example, in the NR-U 52.6GHz-71GHz frequency band, the channel bandwidth and subcarrier spacing are not fixed, and the position of the definite synchronization grid cannot be designed using the existing method. Therefore, how to determine the position of the allowed synchronization grid in the high frequency bandwidth range of NR-U (for example, 52.6GHz-71GHz) to search for SSB is a technical problem that people in this field need to solve.

[0058] In view of the above problems, the present application proposes the following embodiments, which are described in detail below with reference to the accompanying drawings.

[0059] See also Figure 2 , Figure 2 A method for determining a synchronization signal block SSB frequency domain position provided in an embodiment of the present application is applied to the above-mentioned example communication system, and the method includes:

[0060] In S201, the terminal determines a position of a first synchronization grid within a target bandwidth.

[0061] The first synchronization grid is used to determine the frequency domain position of the SSB within the target bandwidth, and the position of the first synchronization grid within the target bandwidth is associated with one or more of the following information: the subcarrier spacing of the SSB, the size of the target bandwidth, the size of the reserved bandwidth at the boundary of the target bandwidth, and the information of the first channel within the target bandwidth. The frequency range of the first channel does not overlap with the SSB.

[0062] The target bandwidth refers to the high frequency bandwidth in NR-U, wherein the range of the high frequency bandwidth may be 52.6 GHz-71 GHz. The first synchronization grid may refer to the synchronization grid allowed in the high frequency bandwidth in NR-U. Within the target bandwidth, the subcarrier spacing of SSB may be different, for example, the subcarrier spacing of SSB may be 240 kHz, 480 kHz and 960 kHz. The size of the target bandwidth is related to the subcarrier spacing of SSB, for example, the subcarrier spacing of SSB is 120 kHz, 480 kHz and 960 kHz, respectively, and the corresponding target bandwidth size may be 400 MHz, 1600 MHz and 2160 MHz, respectively. The size of the reserved bandwidth at the boundary of the target bandwidth may refer to the size of the reserved bandwidth at the edge of the target bandwidth, or may refer to the size of the reserved bandwidth at the upper boundary of the target bandwidth, or the size of the reserved bandwidth at the lower boundary of the target bandwidth. The first channel may be a channel occupied by the control resource set CORESET, and further, the first channel may be a channel occupied by CORESET#0.

[0063] The target bandwidth may be a channel bandwidth, an LBT bandwidth or a nominal bandwidth. The channel bandwidth is the bandwidth supported for transmission on the target frequency band, and its size is related to the frequency band and the subcarrier spacing. The LBT bandwidth is the bandwidth for channel sensing in the unlicensed spectrum, and may be equal to the channel bandwidth, such as the minimum supported channel bandwidth or the sum of multiple minimum supported channel bandwidths. The nominal bandwidth may be specified in accordance with relevant regulations on the use of unlicensed frequency bands. The target bandwidth may also be a fixed bandwidth, such as a fixed bandwidth for channel sensing.

[0064] In one possible example, the associated information of the position of the first synchronization grid within the target bandwidth includes: the size of the target bandwidth. Among them, in the high-frequency bandwidth range, such as 52.6GHz-71GHz, the size of the target bandwidth can be multiple, and the size of the target bandwidth can be related to the subcarrier spacing of the SSB. For example, the subcarrier spacing of the SSB is 120kHz, 480kHz and 960kHz, and the corresponding target bandwidth sizes can be 400MHz, 1600MHz and 2160MHz, respectively. Therefore, in an embodiment of the present application, there are multiple sizes of the target bandwidth in the high-frequency bandwidth range, such as 52.6GHz-71GHz. For the same high-frequency bandwidth range, the position of the first synchronization grid within the target bandwidth is related to the size of the target bandwidth.

[0065] When the target bandwidth is a first value, the position of the first synchronization grid is a first position; when the target bandwidth is a second value, the position of the first synchronization grid is a second position, and the first position is different from the second position, wherein the first value is greater than the second value, and the first position is lower than the second position. The first position is lower than the second position means that the frequency domain position of the first position is lower than the frequency domain position of the second position, which can also be understood as the GSCN value corresponding to the first position is smaller than the GSCN value corresponding to the second position. Figure 3 As shown, it is assumed that the index of the position of the first synchronization grid is numbered from the upper boundary to the lower boundary of the target bandwidth. For the same high-frequency bandwidth range, it is assumed that the target bandwidths that can be used are channel bandwidth 1 and channel bandwidth 2, channel bandwidth 1 is 1600MHz, and channel bandwidth 2 is 400MHz. Then for channel bandwidth 1, the subcarrier spacing of SSB is 480kHz, and the corresponding index of the position of the first synchronization grid is 6; for channel bandwidth 2, the subcarrier spacing of SSB is 240kHz, and the corresponding index of the position of the first synchronization grid is 2; that is, when the size of the target bandwidth is 1600MHz, that is, the first value is 1600MHz, the position of the first synchronization grid is the first position, wherein the index of the first position is 6; when the size of the target bandwidth is 400MHz, that is, the second value is 400MHz, the position of the first synchronization grid is the second position, wherein the index of the second position is 2. Among them, the first position with an index of 6 is lower than the second position with an index of 2.

[0066] When the target bandwidth is a first value, the position of the first synchronization grid is a first position; when the target bandwidth is a second value, the position of the first synchronization grid is a second position, and the first position is different from the second position, wherein the first value is greater than the second value, and the first position is higher than the second position. The first position is higher than the second position means that the frequency domain position of the first position is higher than the frequency domain position of the second position, which can also be understood as the GSCN value corresponding to the first position is greater than the GSCN value corresponding to the second position. Figure 4 As shown, it is assumed that the index of the position of the first synchronization grid is numbered from the lower boundary to the upper boundary of the target bandwidth. For the same high-frequency bandwidth range, it is assumed that the target bandwidths that can be used are channel bandwidth 1 and channel bandwidth 2, channel bandwidth 1 is 1600MHz, and channel bandwidth 2 is 400MHz. Then for channel bandwidth 1, the subcarrier spacing of SSB is 480kHz, and the corresponding index of the position of the first synchronization grid is 6; for channel bandwidth 2, the subcarrier spacing of SSB is 240kHz, and the corresponding index of the position of the first synchronization grid is 2; that is, when the size of the target bandwidth is 1600MHz, that is, the first value is 1600MHz, the position of the first synchronization grid is the first position, wherein the index of the first position is 6; when the size of the target bandwidth is 400MHz, that is, the second value is 400MHz, the position of the first synchronization grid is the second position, wherein the index of the second position is 2. Among them, the first position with an index of 6 is higher than the second position with an index of 2.

[0067] In one possible example, the associated information of the position of the first synchronization grid in the target bandwidth includes: the subcarrier spacing of the SSB. That is, the position of the first synchronization grid in the target bandwidth is related to the subcarrier spacing of the SSB. In the high frequency bandwidth range such as 52.6 GHz-71 GHz, the subcarrier spacing of the first channel can support multiple types, for example, 240 kHz, 480 kHz and 960 kHz.

[0068] When the subcarrier spacing of the SSB is the first subcarrier spacing, the position of the first synchronization grid is the third position, and when the subcarrier spacing of the SSB is the second subcarrier spacing, the position of the first synchronization grid is the fourth position. The third position is different from the fourth position, wherein the first subcarrier spacing is greater than the second subcarrier spacing, and the third position is lower than the fourth position. The third position being lower than the fourth position means that the frequency domain position of the third position is lower than the frequency domain position of the fourth position, which can also be understood as the GSCN value corresponding to the third position is less than the GSCN value corresponding to the fourth position. Assume that the index of the position of the first synchronization grid is numbered from the upper boundary to the lower boundary of the target bandwidth. For example Figure 5 As shown, assuming that the subcarrier spacing of SSB is 240kHz, the index of the position of the corresponding first synchronization grid can be 2. Specifically, it can be obtained as follows: since the subcarrier spacing of SSB is 240kHz, the bandwidth occupied by SSB is 57.6MHz, and half of the bandwidth occupied by SSB is 28.8MHz. Since the interval between synchronization grids is 17.28MHz in the range of 24250-100000MHz, Since the bandwidth occupied by SSB must be within the target bandwidth, 1.66 is rounded down to 2, so the SSB subcarrier spacing is 240kHz, and the corresponding index of the position of the first synchronization grid is 2. Assuming that the subcarrier spacing of SSB is 480kHz, the index of the corresponding position of the first synchronization grid can be 4. That is to say, when the subcarrier spacing of SSB is 480kHz, that is, the first subcarrier spacing is 480kHz, the position of the first synchronization grid is the third position, where the index of the third position is 4; when the subcarrier spacing of SSB is 240kHz, that is, the second subcarrier spacing is 240kHz, the position of the first synchronization grid is the fourth position, where the index of the fourth position is 2. Among them, the third position with an index of 4 is lower than the fourth position with an index of 2.

[0069] When the subcarrier spacing of the SSB is the first subcarrier spacing, the position of the first synchronization grid is the third position, and when the subcarrier spacing of the SSB is the second subcarrier spacing, the position of the first synchronization grid is the fourth position. The third position is different from the fourth position, wherein the first subcarrier spacing is greater than the second subcarrier spacing, and the third position is higher than the fourth position. The third position being higher than the fourth position means that the frequency domain position of the third position is lower than the frequency domain position of the fourth position, which can also be understood as the GSCN value corresponding to the third position being greater than the GSCN value corresponding to the fourth position. Assume that the index of the position of the first synchronization grid is numbered from the lower boundary to the upper boundary of the target bandwidth. For example Figure 6 As shown, assuming that the subcarrier spacing of SSB is 240kHz, the index of the corresponding position of the first synchronization grid can be 2. Assuming that the subcarrier spacing of SSB is 480kHz, the index of the corresponding position of the first synchronization grid can be 4. That is to say, when the subcarrier spacing of SSB is 480kHz, that is, the first subcarrier spacing is 480kHz, the position of the first synchronization grid is the third position, wherein the index of the third position is 4; when the subcarrier spacing of SSB is 240kHz, that is, the second subcarrier spacing is 240kHz, the position of the first synchronization grid is the fourth position, wherein the index of the fourth position is 2. Among them, the third position with an index of 4 is higher than the fourth position with an index of 2.

[0070] In a possible example, the associated information of the position of the first synchronization grid within the target bandwidth includes: the size of the reserved bandwidth at the boundary of the target bandwidth. That is, the position of the first synchronization grid within the target bandwidth and the size of the reserved bandwidth at the boundary of the target bandwidth. The size of the reserved bandwidth at the boundary of the target bandwidth can be determined by receiving first indication information from a network device through a terminal, and the first indication information is used to indicate the size of the reserved bandwidth at the boundary of the target bandwidth.

[0071] When the size of the reserved bandwidth is the third value, the position of the first synchronization grid is the fifth position; when the size of the reserved bandwidth is the fourth value, the position of the first synchronization grid is the sixth position, wherein the fifth position is different from the sixth position, the third value is greater than the fourth value, the fourth value is greater than or equal to 0Hz, and the fifth position is lower than the sixth position. The fifth position being lower than the sixth position means that the frequency domain position of the fifth position is lower than the frequency domain position of the sixth position, which can also be understood as the GSCN value corresponding to the fifth position is smaller than the GSCN value corresponding to the sixth position. Assume that the index of the position of the first synchronization grid is numbered from the upper boundary to the lower boundary of the target bandwidth. The size of the reserved bandwidth refers to the size of the reserved bandwidth at the upper boundary of the target bandwidth. For example Figure 7 As shown in (a), assuming that the reserved bandwidth is 50 MHz, the corresponding index of the position of the first synchronization grid is 5; Figure 7 As shown in (b), assuming that the size of the reserved bandwidth is 0MHz, the index of the corresponding first synchronization grid position is 2; that is, when the size of the reserved bandwidth is 50MHz, that is, the third value is 50MHz, the position of the first synchronization grid is the fifth position, and the index of the fifth position is 5; when the size of the reserved bandwidth is 0MHz, that is, the fourth value is 0MHz, the position of the first synchronization grid is the sixth position, and the index of the sixth position is 2; wherein, the fifth position with an index of 5 is lower than the sixth position with an index of 2.

[0072] When the size of the reserved bandwidth is the third value, the position of the first synchronization grid is the fifth position; when the size of the reserved bandwidth is the fourth value, the position of the first synchronization grid is the sixth position, wherein the fifth position is different from the sixth position, the third value is greater than the fourth value, the fourth value is greater than or equal to 0Hz, and the fifth position is higher than the sixth position. Among them, the fifth position is higher than the sixth position means that the frequency domain position of the fifth position is higher than the frequency domain position of the sixth position, which can also be understood as the GSCN value corresponding to the fifth position is greater than the GSCN value corresponding to the sixth position. Assume that the index of the position of the first synchronization grid is numbered from the lower boundary to the upper boundary of the target bandwidth. The size of the reserved bandwidth refers to the size of the reserved bandwidth at the lower boundary of the target bandwidth. For example Figure 8 As shown in (a), assuming that the reserved bandwidth is 50 MHz, the corresponding index of the position of the first synchronization grid is 5; Figure 8As shown in (b), assuming that the size of the reserved bandwidth is 0MHz, the index of the corresponding first synchronization grid position is 2; that is, when the size of the reserved bandwidth is 50MHz, that is, the third value is 50MHz, the position of the first synchronization grid is the fifth position, and the index of the fifth position is 5; when the size of the reserved bandwidth is 0MHz, that is, the fourth value is 0MHz, the position of the first synchronization grid is the sixth position, and the index of the sixth position is 2; wherein, the fifth position with an index of 5 is higher than the sixth position with an index of 2.

[0073] In a possible example, the associated information of the position of the first synchronization grid within the target bandwidth includes: information of the first channel. The information of the first channel includes one or more of the following information: subcarrier spacing of the first channel; bandwidth size of the first channel; type of the first channel; number of first channels; frequency domain position of the first channel.

[0074] The subcarrier spacing of the first channel can support multiple types, for example, 120kHz, 480kHz and 960kHz. The bandwidth of the first channel is related to the subcarrier spacing of the first channel. Since the subcarrier spacing of the first channel supports multiple types, the corresponding bandwidth of the first channel also supports multiple types. The type of the first channel can be PDCCH, PDSCH, etc.

[0075] The associated information of the position of the first synchronization grid in the target bandwidth includes: the subcarrier spacing of the first channel. The first channel is described as PDCCH as an example.

[0076] When the subcarrier spacing of PDCCH is the third subcarrier spacing, the position of the first synchronization grid is the seventh position, and when the subcarrier spacing of PDSCH is the fourth subcarrier spacing, the position of the first synchronization grid is the eighth position, and the seventh position is different from the eighth position, wherein the third subcarrier spacing is greater than the fourth subcarrier spacing, and the seventh position is lower than the eighth position. Among them, the seventh position is lower than the eighth position means that the frequency domain position of the seventh position is lower than the frequency domain position of the eighth position, which can also be understood as the GSCN value corresponding to the seventh position is less than the GSCN value corresponding to the eighth position. Assume that the index of the position of the first synchronization grid is numbered from the upper boundary to the lower boundary of the target bandwidth. For example Fig. 9 As shown in (a), assuming that the subcarrier spacing of PDCCH is 480kHz, the subcarrier spacing of SSB is 120kHz, and the index of the position of the first synchronization grid is 18; Fig. 9As shown in (b), assuming that the subcarrier spacing of PDCCH is 120kHz, the subcarrier spacing of SSB is 120kHz, and the index of the position of the first synchronization grid is 6; that is, when the subcarrier spacing of PDCCH is 480kHz, the third subcarrier spacing is 480kHz, the position of the first synchronization grid is the seventh position, and the index of the seventh position is 18; when the subcarrier spacing of PDCCH is 120kHz, the fourth subcarrier spacing is 120kHz, the position of the first synchronization grid is the eighth position, and the index of the eighth position is 6; wherein, the seventh position with an index of 18 is lower than the eighth position with an index of 6.

[0077] When the subcarrier spacing of PDCCH is the third subcarrier spacing, the position of the first synchronization grid is the seventh position, and when the subcarrier spacing of PDSCH is the fourth subcarrier spacing, the position of the first synchronization grid is the eighth position, and the seventh position is different from the eighth position, wherein the third subcarrier spacing is greater than the fourth subcarrier spacing, and the seventh position is higher than the eighth position. Among them, the seventh position is higher than the eighth position means that the frequency domain position of the seventh position is higher than the frequency domain position of the eighth position, which can also be understood as the GSCN value corresponding to the seventh position is greater than the GSCN value corresponding to the eighth position. Assume that the index of the position of the first synchronization grid is numbered from the lower boundary to the upper boundary of the target bandwidth. For example Fig.10 As shown in (a), assuming that the subcarrier spacing of PDCCH is 480kHz, the subcarrier spacing of SSB is 120kHz, and the index of the position of the first synchronization grid is 18; Fig.10 As shown in (b), assuming that the subcarrier spacing of PDCCH is 120kHz, the subcarrier spacing of SSB is 120kHz, and the index of the position of the first synchronization grid is 6; that is, when the subcarrier spacing of PDCCH is 480kHz, the third subcarrier spacing is 480kHz, the position of the first synchronization grid is the seventh position, and the index of the seventh position is 18; when the subcarrier spacing of PDCCH is 120kHz, the fourth subcarrier spacing is 120kHz, the position of the first synchronization grid is the eighth position, and the index of the eighth position is 6; wherein, the seventh position with an index of 18 is higher than the eighth position with an index of 6.

[0078] Since the bandwidth of the first channel is related to the subcarrier spacing of the first channel, and since the subcarrier spacing of the first channel supports multiple types, the corresponding bandwidth of the first channel also supports multiple types. For example, the subcarrier spacing of the first channel is 120kHz and 480kHz, and the corresponding bandwidth of the first channel is 69.12MHz and 276.48MHz respectively. Here, the associated information of the position of the first synchronization grid within the target bandwidth includes: The example of the bandwidth of the first channel can be referred to Fig. 9 and Fig.10 , I will not go into details here.

[0079] The associated information of the position of the first synchronization grid in the target bandwidth includes: the type of the first channel, wherein the type of the first channel may be PDCCH, PDSCH, and the like.

[0080] When the type of the first channel is type 1, the position of the first synchronization grid is the ninth position; when the type of the first channel is type 2, the position of the first synchronization grid is the tenth position; wherein the ninth position is different from the tenth position. Assume that the index of the position of the first synchronization grid is numbered from the upper boundary to the lower boundary of the target bandwidth. Fig.11 As shown in (a), when the type of the first channel is PDCCH, the position of the first synchronization grid is the ninth position; Fig.11 As shown in (b), when the type of the first channel is PDSCH, the position of the first synchronization grid is the tenth position. Among them, the ninth position is different from the tenth position.

[0081] When the type of the first channel is type 1, the position of the first synchronization grid is the ninth position; when the type of the first channel is type 2, the position of the first synchronization grid is the tenth position; wherein the ninth position is different from the tenth position. Assume that the index of the position of the first synchronization grid is numbered from the lower boundary to the upper boundary of the target bandwidth. Fig.12 As shown in (a), when the type of the first channel is PDCCH, the position of the first synchronization grid is the ninth position; Fig.12 As shown in (b), when the type of the first channel is PDSCH, the position of the first synchronization grid is the tenth position. Among them, the ninth position is different from the tenth position.

[0082] The associated information of the position of the first synchronization grid in the target bandwidth includes: the number of first channels. The description is given by taking the first channel as PDCCH as an example.

[0083] When the number of PDCCHs is the fifth value, the position of the first synchronization grid is the eleventh position, and when the number of PDSCHs is the sixth value, the position of the first synchronization grid is the twelfth position, and the eleventh position is different from the twelfth position, wherein the fifth value is greater than the sixth value, wherein the sixth value is greater than or equal to 0. The eleventh position is lower than the twelfth position. Among them, the eleventh position is lower than the twelfth position means that the frequency domain position of the eleventh position is lower than the frequency domain position of the twelfth position, which can also be understood as the GSCN value corresponding to the eleventh position is less than the GSCN value corresponding to the twelfth position. Assume that the index of the position of the first synchronization grid is numbered from the upper boundary to the lower boundary of the target bandwidth. For example Fig.13 As shown in (a), assuming that the number of PDCCHs is 1, the index of the position of the first synchronization grid is 6; Fig.13As shown in (b), assuming that the number of PDCCHs is 0, the index of the position of the first synchronization grid is 2; that is, when the number of PDCCHs is the fifth value, the fifth value is 1, the position of the first synchronization grid is the eleventh position, and the index of the eleventh position is 6; when the number of PDCCHs is the sixth value, the sixth value is 0, the position of the first synchronization grid is the twelfth position, and the index of the twelfth position is 2; wherein, the eleventh position with an index of 6 is lower than the twelfth position with an index of 2.

[0084] When the number of PDCCHs is the fifth value, the position of the first synchronization grid is the eleventh position, and when the number of PDSCHs is the sixth value, the position of the first synchronization grid is the twelfth position, and the eleventh position is different from the twelfth position, wherein the fifth value is greater than the sixth value, wherein the sixth value is greater than or equal to 0. The eleventh position is higher than the twelfth position. Among them, the eleventh position is higher than the twelfth position means that the frequency domain position of the eleventh position is higher than the frequency domain position of the twelfth position, which can also be understood as the GSCN value corresponding to the eleventh position is greater than the GSCN value corresponding to the twelfth position. Assume that the index of the position of the first synchronization grid is numbered from the lower boundary to the upper boundary of the target bandwidth. For example Fig.14 As shown in (a), assuming that the number of PDCCHs is 1, the index of the position of the first synchronization grid is 6; Fig.14 As shown in (b), assuming that the number of PDCCHs is 0, the index of the position of the first synchronization grid is 2; that is, when the number of PDCCHs is the fifth value, the fifth value is 1, the position of the first synchronization grid is the eleventh position, and the index of the eleventh position is 6; when the number of PDCCHs is the sixth value, the sixth value is 0, the position of the first synchronization grid is the twelfth position, and the index of the twelfth position is 2; wherein, the eleventh position with an index of 6 is higher than the twelfth position with an index of 2.

[0085] The associated information of the position of the first synchronization grid in the target bandwidth includes: the frequency domain position of the first channel. The first channel is described as PDCCH as an example.

[0086] When the frequency domain position of the PDCCH is higher than the channel of the SSB, the position of the first synchronization grid is the thirteenth position. When the frequency domain position of the PDCCH is lower than the channel of the SSB, the position of the first synchronization grid is the fourteenth position. The thirteenth position is different from the fourteenth position, wherein the thirteenth position is lower than the fourteenth position. The thirteenth position is lower than the fourteenth position, which means that the frequency domain position of the thirteenth position is lower than the frequency domain position of the fourteenth position, which can also be understood as the GSCN value corresponding to the thirteenth position is less than the GSCN value corresponding to the fourteenth position. Assume that the index of the position of the first synchronization grid is numbered from the upper boundary to the lower boundary of the target bandwidth. For example Fig.15As shown in (a) in FIG. 1 , when the frequency domain position of the PDCCH is located above the frequency domain position of the SSB, the position of the first synchronization grid is the thirteenth position, and the index of the thirteenth position is 6; Fig.15 As shown in (b), when the frequency domain position of PDCCH is below the frequency domain position of SSB, the position of the first synchronization grid is the fourteenth position, the index of the fourteenth position is 2, wherein the thirteenth position with an index of 6 is lower than the fourteenth position with the first index of 2.

[0087] In a possible example, the first channel may be a channel occupied by a control resource set CORESET, and the associated information of the position of the first synchronization grid within the target bandwidth includes: information of the first channel. The information of the first channel includes a multiplexing pattern of CORESET and SSB, and the multiplexing pattern is used to represent the time-frequency position relationship between CORESET and SSB. The information of the first channel includes the subcarrier spacing of CORESET and / or the bandwidth size of CORESET. The first channel is a channel within the target bandwidth whose frequency domain position is higher than the SSB.

[0088] There are three multiplexing patterns of CORESET and SSB, namely multiplexing mode 1, multiplexing mode 2 and multiplexing mode 3. In multiplexing mode 1, SSB and CORESET#0 can be time-division multiplexed in the time domain as follows: Figure 1c As shown in Figure 1, SSB and CORESET#0 are located on different symbols in the time domain, and the frequency range of CORESET#0 includes SSB. SSB and CORESET#0 are frequency-division multiplexed in the frequency domain. Figure 1d shown.

[0089] The associated information of the position of the first synchronization grid within the target bandwidth includes: information of the first channel, and the information of the first channel includes a multiplexing pattern of CORESET and SSB.

[0090] When the multiplexing pattern of CORESET and SSB is multiplexing mode 2, the position of the first synchronization grid in the target bandwidth is the fifteenth position; when the multiplexing pattern of CORESET and SSB is multiplexing mode 3, the position of the first synchronization grid in the target bandwidth is the sixteenth position; wherein the fifteenth position and the sixteenth position are different.

[0091] The associated information of the position of the first synchronization grid within the target bandwidth includes: information of the first channel, and the information of the first channel includes the subcarrier spacing of the CORESET.

[0092] When the subcarrier spacing of CORESET is the fifth subcarrier spacing, the position of the first synchronization grid in the target bandwidth is the seventeenth position; when the subcarrier spacing of CORESET is the sixth subcarrier spacing, the position of the first synchronization grid in the target bandwidth is the eighteenth position; the fifth subcarrier spacing is greater than the sixth subcarrier spacing, and the seventeenth position is lower than the eighteenth position. Among them, the seventeenth position is lower than the eighteenth position means that the frequency domain position of the seventeenth position is lower than the frequency domain position of the eighteenth position, which can also be understood as the GSCN value corresponding to the seventeenth position is less than the GSCN value corresponding to the eighteenth position. Fig.16 As shown in (a) in FIG. 1 , it is assumed that the subcarrier spacing of CORESET is 480 kHz, the subcarrier spacing of SSB is 120 kHz, and the index of the position of the first synchronization grid is 18; Fig.16 As shown in (b), assuming that the subcarrier spacing of CORESET is 120kHz, the subcarrier spacing of SSB is 120kHz, and the index of the position of the first synchronization grid is 6; that is, when the subcarrier spacing of CORESET is 480kHz, the fifth subcarrier spacing is 480kHz, the position of the first synchronization grid is the seventeenth position, and the index of the seventeenth position is 18; when the subcarrier spacing of CORESET is 120kHz, the fourth subcarrier spacing is 120kHz, the position of the first synchronization grid is the eighteenth position, and the index of the eighteenth position is 6; wherein, the seventeenth position with an index of 18 is lower than the eighteenth position with an index of 6.

[0093] Since the bandwidth of CORESET is related to the subcarrier spacing of CORESET, and since the subcarrier spacing of CORESET supports multiple types, the corresponding bandwidth of CORESET also supports multiple types. For example, the subcarrier spacing of CORESET is 120kHz and 480kHz, and the corresponding bandwidth of CORESET is 69.12MHz and 276.48MHz respectively. The associated information of the position of the first synchronization grid in the target bandwidth includes: The example of the bandwidth of CORESET can be referred to Fig.16 , I will not go into details here.

[0094] The elements included in the above-mentioned associated information of the position of the first synchronization grid within the target bandwidth can be combined with each other, thereby affecting the position of the first synchronization grid within the target bandwidth. Specifically, some examples are given below for illustration:

[0095] The associated information of the position of the first synchronization grid in the target bandwidth includes the subcarrier spacing of the SSB and the size of the reserved bandwidth at the boundary of the target bandwidth. If the subcarrier spacing of the SSB and the size of the reserved bandwidth at the boundary of the target bandwidth are the first combination, the position of the first synchronization grid in the target bandwidth is the nineteenth position; if the subcarrier spacing of the SSB and the size of the reserved bandwidth at the boundary of the target bandwidth are the second combination, the position of the first synchronization grid in the target bandwidth is the twentieth position; wherein the nineteenth position and the twentieth position are different. The first combination is the value of the subcarrier spacing of the SSB and the value of the reserved bandwidth at the boundary of the target bandwidth; the second combination is the value of the subcarrier spacing of the SSB and the value of the reserved bandwidth at the boundary of the target bandwidth.

[0096] like Figure 7 As shown in (a), when the first combination is: the subcarrier spacing of SSB is 240kHz, the size of the reserved bandwidth at the boundary of the target bandwidth is 50MHz, the position of the first synchronization grid in the target bandwidth is the nineteenth position, and the index of the nineteenth position is 5; Figure 7 As shown in (b), when the second combination is: the subcarrier spacing of SSB is 240kHz, the reserved bandwidth at the boundary of the target bandwidth is 0MHz, the position of the first synchronization grid in the target bandwidth is the twentieth position, and the index of the twentieth position is 2; wherein, the nineteenth position with an index of 5 is lower than the twentieth position with an index of 2.

[0097] like Figure 5 As shown, when the first combination is: the subcarrier spacing of SSB is 480kHz, the size of the reserved bandwidth at the boundary of the target bandwidth is 0MHz, the position of the first synchronization grid in the target bandwidth is the nineteenth position, and the index of the nineteenth position is 4; when the second combination is: the subcarrier spacing of SSB is 240kHz, the size of the reserved bandwidth at the boundary of the target bandwidth is 0MHz, the position of the first synchronization grid in the target bandwidth is the twentieth position, and the index of the twentieth position is 2; wherein, the nineteenth position with an index of 4 is lower than the twentieth position with an index of 2.

[0098] like Fig.17 As shown in (a), when the first combination is: the subcarrier spacing of SSB is 480kHz, the size of the reserved bandwidth at the boundary of the target bandwidth is 50MHz, the position of the first synchronization grid in the target bandwidth is the nineteenth position, and the index of the nineteenth position is 7; Fig.17As shown in (b), when the second combination is: the subcarrier spacing of SSB is 240kHz, the reserved bandwidth at the boundary of the target bandwidth is 0MHz, the position of the first synchronization grid in the target bandwidth is the twentieth position, and the index of the twentieth position is 2; wherein, the nineteenth position with an index of 7 is lower than the twentieth position with an index of 2.

[0099] The associated information of the position of the first synchronization grid in the target bandwidth includes the subcarrier spacing of the SSB and the subcarrier spacing of the first channel. If the subcarrier spacing of the SSB and the subcarrier spacing of the first channel are the third combination, the position of the first synchronization grid in the target bandwidth is the 21st position; if the subcarrier spacing of the SSB and the subcarrier spacing of the first channel are the fourth combination, the position of the first synchronization grid in the target bandwidth is the 22nd position; wherein the 21st position is different from the 22nd position. Among them, the third combination is the value of the subcarrier spacing of the SSB and the value of the subcarrier spacing of the first channel; the fourth combination is the value of the subcarrier spacing of the SSB and the value of the subcarrier spacing of the first channel. Take the first channel as PDCCH as an example for description.

[0100] like Fig. 9 As shown in (a) in FIG. 1 , when the third combination is: the subcarrier spacing of SSB is 240 kHz, the subcarrier spacing of PDCCH is 480 kHz, the position of the first synchronization grid in the target bandwidth is the 21st position, and the index of the 21st position is 18; Fig. 9 As shown in (b), when the fourth combination is: the subcarrier spacing of SSB is 240kHz, the subcarrier spacing of PDCCH is 120kHz, the position of the first synchronization grid in the target bandwidth is the 22nd position, and the index of the 22nd position is 6; wherein, the 21st position with an index of 18 is lower than the 22nd position with an index of 2.

[0101] like Fig.18 As shown in (a) in FIG. 1 , when the third combination is: the subcarrier spacing of SSB is 480 kHz, the subcarrier spacing of PDCCH is 120 kHz, the position of the first synchronization grid in the target bandwidth is the 21st position, and the index of the 21st position is 8; Fig.18 As shown in (b), when the fourth combination is: the subcarrier spacing of SSB is 240kHz, the subcarrier spacing of PDCCH is 120kHz, the position of the first synchronization grid in the target bandwidth is the 22nd position, and the index of the 22nd position is 6; wherein, the 21st position with an index of 8 is lower than the 22nd position with an index of 6.

[0102] like Fig.19As shown in (a) in FIG. 1 , when the third combination is: the subcarrier spacing of SSB is 480 kHz, the subcarrier spacing of PDCCH is 240 kHz, the position of the first synchronization grid in the target bandwidth is the 21st position, and the index of the 21st position is 18; Fig.19 As shown in (b), when the fourth combination is: the subcarrier spacing of SSB is 120kHz, the subcarrier spacing of PDCCH is 480kHz, the position of the first synchronization grid in the target bandwidth is the 22nd position, and the index of the 22nd position is 8; wherein, the 21st position with an index of 18 is lower than the 22nd position with an index of 8.

[0103] The associated information of the position of the first synchronization grid within the target bandwidth includes the subcarrier spacing of the SSB and the bandwidth size of the first channel. The bandwidth size of the first channel is related to the subcarrier spacing of the first channel. Specifically, reference can be made to Fig. 9 , Fig.18 and Fig.19 , I will not go into details here.

[0104] The associated information of the position of the first synchronization grid within the target bandwidth includes the subcarrier spacing of the SSB and the type of the first channel. If the subcarrier spacing of the SSB and the type of the first channel are the fifth combination, the position of the first synchronization grid within the target bandwidth is the twenty-third position; if the subcarrier spacing of the SSB and the type of the first channel are the sixth combination, the position of the first synchronization grid within the target bandwidth is the twenty-fourth position; wherein the twenty-third position and the twenty-fourth position are different.

[0105] like Fig. 20 As shown in (a) in FIG. 5 , when the fifth combination is: the subcarrier spacing of SSB is 240 kHz, the type of the first channel is PDCCH, and the position of the first synchronization grid in the target bandwidth is the 23rd position; Fig. 20 As shown in (b), when the sixth combination is: the subcarrier spacing of SSB is 240kHz, the type of the first channel is PDSCH, and the position of the first synchronization grid in the target bandwidth is the 24th position; wherein the 23rd position and the 24th position are different.

[0106] like Fig.21 As shown in (a) in FIG. 5 , when the fifth combination is: the subcarrier spacing of SSB is 240 kHz, the type of the first channel is PDCCH, and the position of the first synchronization grid in the target bandwidth is the 23rd position; Fig.21 As shown in (b), when the sixth combination is: the subcarrier spacing of SSB is 480kHz, the type of the first channel is PDCCH, and the position of the first synchronization grid in the target bandwidth is the 24th position; wherein the 23rd position and the 24th position are different.

[0107] like Fig. 22 As shown in (a) in FIG. 5 , when the fifth combination is: the subcarrier spacing of SSB is 240 kHz, the type of the first channel is PDCCH, and the position of the first synchronization grid in the target bandwidth is the 23rd position; Fig. 22 As shown in (b), when the sixth combination is: the subcarrier spacing of SSB is 480kHz, the type of the first channel is PDSCH, and the position of the first synchronization grid in the target bandwidth is the 24th position; wherein the 23rd position and the 24th position are different.

[0108] The associated information of the position of the first synchronization grid in the target bandwidth includes the subcarrier spacing of the SSB and the number of the first channels. If the subcarrier spacing of the SSB and the number of the first channels are the seventh combination, the position of the first synchronization grid in the target bandwidth is the twenty-fifth position; if the subcarrier spacing of the SSB and the type of the first channel are the eighth combination, the position of the first synchronization grid in the target bandwidth is the twenty-sixth position; wherein the twenty-fifth position and the twenty-sixth position are different. Among them, the seventh combination refers to the value of the subcarrier spacing of the SSB and the value of the number of the first channels; the eighth combination refers to the value of the subcarrier spacing of the SSB and the value of the number of the first channels. The first channel is described as PDCCH.

[0109] like Fig.13 As shown in (a) in FIG. 1 , when the seventh combination is: the subcarrier spacing of the SSB is 240 kHz, the number of the first channel is 1, the position of the first synchronization grid in the target bandwidth is the 25th position, and the index of the 25th position is 6; Fig.13 As shown in (b), when the eighth combination is: the subcarrier spacing of SSB is 240kHz, the number of first channels is 0, the position of the first synchronization grid in the target bandwidth is the 26th position, and the index of the 26th position is 2; the 25th position with index 6 is different from the 26th position with index 2.

[0110] like Figure 5 As shown, when the seventh combination is: the subcarrier spacing of SSB is 480kHz, the number of first channels is 0, the position of the first synchronization grid in the target bandwidth is the 25th position, and the index of the 25th position is 4; when the eighth combination is: the subcarrier spacing of SSB is 240kHz, the number of first channels is 0, the position of the first synchronization grid in the target bandwidth is the 26th position, and the index of the 26th position is 2; the 25th position with index 4 is different from the 26th position with index 2.

[0111] like Fig.23As shown in (a) in FIG. 1 , when the seventh combination is: the subcarrier spacing of the SSB is 240 kHz, the number of the first channel is 1, the position of the first synchronization grid in the target bandwidth is the 25th position, and the index of the 25th position is 6; Fig.23 As shown in (b), when the eighth combination is: the subcarrier spacing of SSB is 480kHz, the number of first channels is 0, the position of the first synchronization grid in the target bandwidth is the 26th position, and the index of the 26th position is 4; the 25th position with index 6 is different from the 26th position with index 4.

[0112] The associated information of the position of the first synchronization grid in the target bandwidth includes the subcarrier spacing of the SSB and the frequency domain position of the first channel. If the subcarrier spacing of the SSB and the frequency domain position of the first channel are the ninth combination, the position of the first synchronization grid in the target bandwidth is the twenty-seventh position; if the subcarrier spacing of the SSB and the frequency domain position of the first channel are the tenth combination, the position of the first synchronization grid in the target bandwidth is the twenty-eighth position; wherein the twenty-seventh position and the twenty-eighth position are different. The first channel is described as PDCCH as an example.

[0113] like Fig.15 As shown in (a) in FIG. 1 , when the ninth combination is: the subcarrier spacing of SSB is 240 kHz, the frequency domain position of PDCCH is higher than the channel of SSB, the position of the first synchronization grid in the target bandwidth is the 27th position, and the index of the 27th position is 6; Fig.15 As shown in (b), when the tenth combination is: the subcarrier spacing of SSB is 240kHz, the frequency domain position of PDCCH is lower than the channel of SSB, the position of the first synchronization grid in the target bandwidth is the 28th position, and the index of the 28th position is 2; the 27th position is different from the 28th position.

[0114] like Fig.24 As shown in (a) in FIG. 1 , when the ninth combination is: the subcarrier spacing of SSB is 240 kHz, the frequency domain position of PDCCH is higher than the channel of SSB, the position of the first synchronization grid in the target bandwidth is the 27th position, and the index of the 27th position is 6; Fig.24 As shown in (b), when the tenth combination is: the subcarrier spacing of SSB is 480kHz, the frequency domain position of PDCCH is higher than the channel of SSB, the position of the first synchronization grid in the target bandwidth is the 28th position, and the index of the 28th position is 8; the 27th position is different from the 28th position.

[0115] like Fig.25As shown in (a) in FIG. 1 , when the ninth combination is: the subcarrier spacing of SSB is 240 kHz, the frequency domain position of PDCCH is higher than the channel of SSB, the position of the first synchronization grid in the target bandwidth is the 27th position, and the index of the 27th position is 6; Fig.25 As shown in (b), when the tenth combination is: the subcarrier spacing of SSB is 480kHz, the frequency domain position of PDCCH is lower than the channel of SSB, the position of the first synchronization grid in the target bandwidth is the 28th position, and the index of the 28th position is 4; the 27th position is different from the 28th position.

[0116] The associated information of the position of the first synchronization grid in the target bandwidth includes the subcarrier spacing of the SSB and the subcarrier spacing of the CORESET. If the subcarrier spacing of the SSB and the subcarrier spacing of the CORESET are the eleventh combination, the position of the first synchronization grid in the target bandwidth is the twenty-ninth position; if the subcarrier spacing of the SSB and the subcarrier spacing of the CORESET are the twelfth combination, the position of the first synchronization grid in the target bandwidth is the thirtieth position; wherein the twenty-ninth position is different from the thirtieth position.

[0117] like Fig.26 As shown in (a) in FIG. 1 , when the eleventh combination is: the subcarrier spacing of SSB is 240 kHz, the subcarrier spacing of CORESET is 480 kHz, the position of the first synchronization grid in the target bandwidth is the 29th position, and the index of the 29th position is 18; Fig.26 As shown in (b), when the twelfth combination is: the subcarrier spacing of SSB is 120kHz, the subcarrier spacing of CORESET is 240kHz, the position of the first synchronization grid in the target bandwidth is the 30th position, the index of the 30th position is 6; the 29th position is different from the 30th position.

[0118] like Fig. 27 As shown in (a) in FIG. 1 , when the eleventh combination is: the subcarrier spacing of SSB is 480 kHz, the subcarrier spacing of CORESET is 120 kHz, the position of the first synchronization grid in the target bandwidth is the 29th position, and the index of the 29th position is 8; Fig. 27 As shown in (b), when the twelfth combination is: the subcarrier spacing of SSB is 240kHz, the subcarrier spacing of CORESET is 120kHz, the position of the first synchronization grid in the target bandwidth is the 30th position, the index of the 30th position is 6; the 29th position is different from the 30th position.

[0119] like Fig.28As shown in (a) in FIG. 1 , when the eleventh combination is: the subcarrier spacing of SSB is 240 kHz, the subcarrier spacing of CORESET is 480 kHz, the position of the first synchronization grid in the target bandwidth is the 29th position, and the index of the 29th position is 18; Fig.28 As shown in (b), when the twelfth combination is: the subcarrier spacing of SSB is 480kHz, the subcarrier spacing of CORESET is 120kHz, the position of the first synchronization grid in the target bandwidth is the 30th position, the index of the 30th position is 8; the 29th position is different from the 30th position.

[0120] Since the bandwidth size of CORESET is related to the subcarrier spacing of CORESET, the associated information of the position of the first synchronization grid within the target bandwidth includes the subcarrier spacing of SSB and the bandwidth size of CORESET. The associated information of the position of the first synchronization grid within the target bandwidth includes the subcarrier spacing of SSB and the subcarrier spacing of CORESET.

[0121] Since the size of the target bandwidth is related to the subcarrier spacing of the SSB, the associated information of the position of the first synchronization grid within the target bandwidth includes the size of the target bandwidth and the size of the bandwidth reserved at the boundary of the target. The associated information of the position of the first synchronization grid within the target bandwidth includes the subcarrier spacing of the SSB and the size of the bandwidth reserved at the boundary of the target bandwidth, which will not be repeated here. The associated information of the position of the first synchronization grid within the target bandwidth includes the size of the target bandwidth and the subcarrier spacing of the first channel. The associated information of the position of the first synchronization grid within the target bandwidth includes the subcarrier spacing of the SSB and the subcarrier spacing of the first channel, which will not be repeated here. The associated information of the position of the first synchronization grid within the target bandwidth includes the size of the target bandwidth and the type of the first channel. The associated information of the position of the first synchronization grid within the target bandwidth includes the subcarrier spacing of the SSB and the type of the first channel, which will not be repeated here. The associated information of the position of the first synchronization grid within the target bandwidth includes the size of the target bandwidth and the number of the first channels. The associated information of the position of the first synchronization grid within the target bandwidth includes the subcarrier spacing of the SSB and the number of the first channels, which will not be repeated here. The associated information of the position of the first synchronization grid within the target bandwidth includes the size of the target bandwidth and the frequency domain position of the first channel. The associated information of the position of the first synchronization grid within the target bandwidth includes the subcarrier spacing of SSB and the frequency domain position of the first channel, which will not be repeated here.

[0122] The associated information of the position of the first synchronization grid in the target bandwidth includes the size of the reserved bandwidth and the subcarrier spacing of the first channel. If the size of the reserved bandwidth and the subcarrier spacing of the first channel are the thirteenth combination, the position of the first synchronization grid in the target bandwidth is the thirty-first position; if the size of the reserved bandwidth and the subcarrier spacing of the first channel are the fourteenth combination, the position of the first synchronization grid in the target bandwidth is the thirty-second position; wherein the thirty-first position and the thirty-second position are different. The description is made by taking the first channel as PDCCH as an example.

[0123] like Fig.29 As shown in (a) in FIG. 13 , when the thirteenth combination is: the size of the reserved bandwidth is 50 MHz, the subcarrier spacing of the PDCCH is 120 kHz, the position of the first synchronization grid in the target bandwidth is the thirty-first position, and the index of the thirty-first position is 9; Fig.29 As shown in (b), when the fourteenth combination is: the reserved bandwidth is 0 MHz, the subcarrier spacing of PDCCH is 120 kHz, the position of the first synchronization grid in the target bandwidth is the thirty-second position, the index of the thirtieth position is 6; the thirty-first position is different from the thirty-second position.

[0124] like Fig.30 As shown in (a) in FIG. 13 , when the thirteenth combination is: the size of the reserved bandwidth is 0 MHz, the subcarrier spacing of the PDCCH is 480 kHz, the position of the first synchronization grid in the target bandwidth is the thirty-first position, and the index of the thirty-first position is 18; Fig.30 As shown in (b), when the fourteenth combination is: the reserved bandwidth is 0 MHz, the subcarrier spacing of PDCCH is 120 kHz, the position of the first synchronization grid in the target bandwidth is the thirty-second position, the index of the thirtieth position is 6; the thirty-first position is different from the thirty-second position.

[0125] like Fig.31 As shown in (a) in FIG. 13 , when the thirteenth combination is: the size of the reserved bandwidth is 50 MHz, the subcarrier spacing of the PDCCH is 120 kHz, the position of the first synchronization grid in the target bandwidth is the thirty-first position, and the index of the thirty-first position is 9; Fig.31 As shown in (b), when the fourteenth combination is: the reserved bandwidth is 0 MHz, the subcarrier spacing of PDCCH is 480 kHz, the position of the first synchronization grid in the target bandwidth is the thirty-second position, the index of the thirty-second position is 18; the thirty-first position and the thirty-second position are different.

[0126] Since the bandwidth size of the first channel is related to the subcarrier spacing of the first channel, the associated information of the position of the first synchronization grid within the target bandwidth includes the size of the reserved bandwidth and the bandwidth size of the first channel. The associated information of the position of the first synchronization grid within the target bandwidth includes the size of the reserved bandwidth and the subcarrier spacing of the first channel, which will not be repeated here.

[0127] The associated information of the position of the first synchronization grid within the target bandwidth includes the size of the reserved bandwidth and the type of the first channel. If the size of the reserved bandwidth and the type of the first channel are the fifteenth combination, the position of the first synchronization grid within the target bandwidth is the thirty-third position; if the size of the reserved bandwidth and the type of the first channel are the sixteenth combination, the position of the first synchronization grid within the target bandwidth is the thirty-fourth position; wherein the thirty-third position and the thirty-fourth position are different.

[0128] like Fig.32 As shown in (a) in FIG. 1 , when the fifteenth combination is: the size of the reserved bandwidth is 50 MHz, the type of the first channel is PDCCH, and the position of the first synchronization grid in the target bandwidth is the thirty-third position; Fig.32 As shown in (b), when the fifteenth combination is: the size of the reserved bandwidth is 50 MHz, the type of the first channel is PDSCH, the position of the first synchronization grid in the target bandwidth is the thirty-fourth position; the thirty-third position and the thirty-fourth position are different.

[0129] like Fig.32 As shown in (a) in FIG. 1 , when the fifteenth combination is: the size of the reserved bandwidth is 50 MHz, the type of the first channel is PDCCH, and the position of the first synchronization grid in the target bandwidth is the thirty-third position; Fig.31 As shown in (b), when the fifteenth combination is: the size of the reserved bandwidth is 0 MHz, the type of the first channel is PDCCH, the position of the first synchronization grid in the target bandwidth is the thirty-fourth position; the thirty-third position and the thirty-fourth position are different.

[0130] like Fig.33 As shown in (a) in FIG. 1 , when the fifteenth combination is: the size of the reserved bandwidth is 50 MHz, the type of the first channel is PDCCH, the position of the first synchronization grid in the target bandwidth is the thirty-third position, and the index of the thirty-third position is 9; Fig.33 As shown in (b), when the fifteenth combination is: the size of the reserved bandwidth is 0 MHz, the type of the first channel is PDSCH, the position of the first synchronization grid in the target bandwidth is the thirty-fourth position; the thirty-third position and the thirty-fourth position are different.

[0131] The associated information of the position of the first synchronization grid in the target bandwidth includes the size of the reserved bandwidth and the number of the first channels. If the size of the reserved bandwidth and the number of the first channels are the seventeenth combination, the position of the first synchronization grid in the target bandwidth is the thirty-fifth position; if the size of the reserved bandwidth and the number of the first channels are the eighteenth combination, the position of the first synchronization grid in the target bandwidth is the thirty-sixth position; wherein the thirty-fifth position and the thirty-sixth position are different. The first channel is described as an example of PDCCH.

[0132] like Fig.13 As shown in (a) in FIG. 1 , when the seventeenth combination is: the size of the reserved bandwidth is 0 MHz, the number of the first channel is 1, the position of the first synchronization grid in the target bandwidth is the thirty-fifth position, and the index of the thirty-fifth position is 6; Fig.13 As shown in (b), when the eighteenth combination is: the size of the reserved bandwidth is 0 MHz, the number of first channels is 0, the position of the first synchronization grid within the target bandwidth is the thirty-sixth position, the index of the thirty-sixth position is 2; the thirty-fifth position and the thirty-sixth position are different.

[0133] like Fig.34 As shown in (a) in FIG. 1 , when the seventeenth combination is: the size of the reserved bandwidth is 50 MHz, the number of the first channel is 1, and the position of the first synchronization grid within the target bandwidth is the thirty-fifth position; Fig.34 As shown in (b), when the eighteenth combination is: the size of the reserved bandwidth is 0 MHz, the number of the first channels is 1, the position of the first synchronization grid in the target bandwidth is the thirty-sixth position, and the thirty-fifth position is different from the thirty-sixth position.

[0134] like Fig.35 As shown in (a) in FIG. 1 , when the seventeenth combination is: the size of the reserved bandwidth is 50 MHz, the number of the first channel is 1, and the position of the first synchronization grid within the target bandwidth is the thirty-fifth position; Fig.35 As shown in (b), when the eighteenth combination is: the size of the reserved bandwidth is 0 MHz, the number of first channels is 0, the position of the first synchronization grid in the target bandwidth is the thirty-sixth position, and the thirty-fifth position is different from the thirty-sixth position.

[0135] The associated information of the position of the first synchronization grid in the target bandwidth includes the size of the reserved bandwidth and the frequency domain position of the first channel. If the size of the reserved bandwidth and the frequency domain position of the first channel are the 19th combination, the position of the first synchronization grid in the target bandwidth is the 37th position; if the size of the reserved bandwidth and the frequency domain position of the first channel are the 20th combination, the position of the first synchronization grid in the target bandwidth is the 38th position; wherein the 37th position and the 38th position are different. The first channel is described as PDCCH as an example.

[0136] like Fig.15 As shown in (a) in FIG. 1 , when the nineteenth combination is: the size of the reserved bandwidth is 0 MHz, the frequency domain position of the PDCCH is higher than the channel of the SSB, the position of the first synchronization grid in the target bandwidth is the thirty-seventh position, and the index of the thirty-seventh position is 6; Fig.15 As shown in (b), when the twentieth combination is: the reserved bandwidth is 0 MHz, the frequency domain position of the PDCCH is lower than the SSB channel, the position of the first synchronization grid in the target bandwidth is the thirty-eighth position, and the index of the thirty-eighth position is 2; the thirty-seventh position is different from the thirty-eighth position.

[0137] like Fig.15 As shown in (a) in FIG. 1 , when the nineteenth combination is: the size of the reserved bandwidth is 0 MHz, the frequency domain position of the PDCCH is higher than the channel of the SSB, the position of the first synchronization grid in the target bandwidth is the thirty-seventh position, and the index of the thirty-seventh position is 6; Fig.29 As shown in (a), when the twentieth combination is: the reserved bandwidth is 50 MHz, the frequency domain position of the PDCCH is higher than the SSB channel, the position of the first synchronization grid in the target bandwidth is the thirty-eighth position, and the index of the thirty-eighth position is 9; the thirty-seventh position and the thirty-eighth position are different.

[0138] like Fig.15 As shown in (b), when the nineteenth combination is: the size of the reserved bandwidth is 0 MHz, the frequency domain position of the PDCCH is lower than the channel of the SSB, the position of the first synchronization grid in the target bandwidth is the thirty-seventh position, and the index of the thirty-seventh position is 2; Fig.29 As shown in (a), when the twentieth combination is: the reserved bandwidth is 50 MHz, the frequency domain position of the PDCCH is higher than the SSB channel, the position of the first synchronization grid in the target bandwidth is the thirty-eighth position, and the index of the thirty-eighth position is 9; the thirty-seventh position and the thirty-eighth position are different.

[0139] The associated information of the position of the first synchronization grid within the target bandwidth includes the size of the reserved bandwidth and the subcarrier spacing of the CORESET. The associated information of the position of the first synchronization grid within the target bandwidth includes the size of the reserved bandwidth and the subcarrier spacing of the first channel; it will not be repeated here. The associated information of the position of the first synchronization grid within the target bandwidth includes the size of the reserved bandwidth and the bandwidth size of the CORESET. The associated information of the position of the first synchronization grid within the target bandwidth includes the size of the reserved bandwidth and the bandwidth size of the first channel; it will not be repeated here.

[0140] The associated information of the position of the first synchronization grid within the target bandwidth includes the subcarrier spacing of the first channel and the type of the first channel. If the subcarrier spacing of the first channel and the type of the first channel are the twenty-first combination, the position of the first synchronization grid within the target bandwidth is the thirty-ninth position; if the subcarrier spacing of the first channel and the type of the first channel are the twenty-second combination, the position of the first synchronization grid within the target bandwidth is the fortieth position; wherein the thirty-ninth position and the fortieth position are different.

[0141] like Fig.36 As shown in (a), when the twenty-first combination is: the subcarrier spacing of the first channel is 240 khz, the type of the first channel is PDSCH, and the position of the first synchronization grid in the target bandwidth is the thirty-ninth position; Fig.36 As shown in (b), when the twenty-first combination is: the subcarrier spacing of the first channel is 120khz, the type of the first channel is PDCCH, the position of the first synchronization grid in the target bandwidth is the 40th position; the 39th position and the 40th position are different.

[0142] The associated information of the position of the first synchronization grid in the target bandwidth includes the subcarrier spacing of the first channel and the number of the first channels. If the subcarrier spacing of the first channel and the type of the first channel are the twenty-third combination, the position of the first synchronization grid in the target bandwidth is the forty-first position; if the subcarrier spacing of the first channel and the type of the first channel are the twenty-fourth combination, the position of the first synchronization grid in the target bandwidth is the forty-second position; wherein the forty-first position and the forty-second position are different. The first channel is described as an example of PDCCH.

[0143] like Fig.37 As shown in (a), when the twenty-third combination is: the subcarrier spacing of the first channel is 480 khz, the number of the first channel is 1, and the position of the first synchronization grid in the target bandwidth is the forty-first position; Fig.37 As shown in (b), when the twenty-fourth combination is: the subcarrier spacing of the first channel is 120khz, the number of first channels is 2, and the position of the first synchronization grid within the target bandwidth is the forty-second position; the forty-first position and the forty-second position are different.

[0144] The associated information of the position of the first synchronization grid in the target bandwidth includes the subcarrier spacing of the first channel and the frequency domain position of the first channel. If the subcarrier spacing of the first channel and the frequency domain position of the first channel are the twenty-fifth combination, the position of the first synchronization grid in the target bandwidth is the forty-third position; if the subcarrier spacing of the first channel and the type of the first channel are the twenty-sixth combination, the position of the first synchronization grid in the target bandwidth is the forty-fourth position; wherein the forty-third position and the forty-fourth position are different. The first channel is described as PDCCH as an example.

[0145] like Fig.38 As shown in (a), when the twenty-fifth combination is: the subcarrier spacing of the first channel is 480 khz, the frequency domain position of the PDCCH is higher than the channel of the SSB, and the position of the first synchronization grid in the target bandwidth is the forty-third position; Fig.38 As shown in (b), when the twenty-sixth combination is: the subcarrier spacing of the first channel is 120khz, the frequency domain position of PDCCH is lower than the SSB channel, and the position of the first synchronization grid in the target bandwidth is the forty-fourth position; the forty-third position and the forty-fourth position are different.

[0146] The associated information of the position of the first synchronization grid within the target bandwidth includes the type of the first channel and the number of the first channels. If the type of the first channel and the number of the first channels are the twenty-seventh combination, the position of the first synchronization grid within the target bandwidth is the forty-fifth position; if the type of the first channel and the number of the first channels are the twenty-eighth combination, the position of the first synchronization grid within the target bandwidth is the forty-sixth position; wherein the forty-fifth position and the forty-sixth position are different.

[0147] like Fig.39 As shown in (a) in FIG. 1 , when the twenty-seventh combination is: the type of the first channel is PDSCH, the number of the first channel is 1, and the position of the first synchronization grid in the target bandwidth is the forty-fifth position; Fig.39 As shown in (b), when the twenty-eighth combination is: the type of the first channel is PDCCH, the number of first channels is 2, the position of the first synchronization grid in the target bandwidth is the forty-sixth position; the forty-fifth position and the forty-sixth position are different.

[0148] The associated information of the position of the first synchronization grid within the target bandwidth includes the type of the first channel and the frequency domain position of the first channel. If the type of the first channel and the frequency domain position of the first channel are the twenty-ninth combination, the position of the first synchronization grid within the target bandwidth is the forty-seventh position; if the subcarrier spacing of the first channel and the type of the first channel are the thirtieth combination, the position of the first synchronization grid within the target bandwidth is the forty-eighth position; wherein the forty-seventh position and the forty-eighth position are different.

[0149] like Fig.40 As shown in (a) in FIG. 1 , when the twenty-ninth combination is: the type of the first channel is PDCCH, the frequency domain position of the first channel is higher than the SSB channel, and the position of the first synchronization grid in the target bandwidth is the forty-seventh position; Fig.40 As shown in (b), when the 30th combination is: the type of the first channel is PDSCH, the frequency domain position of the first channel is lower than the SSB channel, the position of the first synchronization grid in the target bandwidth is the 48th position; the 47th position and the 48th position are different.

[0150] The associated information of the position of the first synchronization grid in the target bandwidth includes the number of first channels and the frequency domain position of the first channel. If the number of first channels and the frequency domain position of the first channel are the thirty-first combination, the position of the first synchronization grid in the target bandwidth is the forty-ninth position; if the subcarrier spacing of the first channel and the type of the first channel are the thirty-second combination, the position of the first synchronization grid in the target bandwidth is the fiftieth position; wherein the forty-ninth position and the fiftieth position are different. The first channel is described as PDCCH as an example.

[0151] like Fig.41 As shown in (a) in FIG. 1 , when the thirty-first combination is: the number of the first channel is 1, the frequency domain position of the first channel is higher than the SSB channel, and the position of the first synchronization grid within the target bandwidth is the forty-ninth position; Fig.41 As shown in (b), when the thirty-second combination is: the number of first channels is 2, the frequency domain position of the first channel is lower than the SSB channel, the position of the first synchronization grid in the target bandwidth is the fiftieth position; the forty-ninth position is different from the fiftieth position.

[0152] The associated information of the position of the first synchronization grid within the target bandwidth includes the subcarrier spacing of the SSB, the size of the reserved bandwidth at the boundary of the target bandwidth, and the information of the first channel within the target bandwidth. Here, the information of the first channel is described as the subcarrier spacing of the first channel, and the others can be inferred from this, and will not be repeated here. If the subcarrier spacing of the SSB, the size of the reserved bandwidth at the boundary of the target bandwidth, and the information of the first channel within the target bandwidth are the thirty-third combination, the position of the first synchronization grid within the target bandwidth is the fifty-first position; if the subcarrier spacing of the first channel and the type of the first channel are the thirty-fourth combination, the position of the first synchronization grid within the target bandwidth is the fifty-second position; wherein the fifty-first position and the fifty-second position are different. The first channel is described as PDCCH as an example.

[0153] like Fig.42 As shown in (a), when the thirty-third combination is: the subcarrier spacing of SSB is 480kHz, the size of the reserved bandwidth at the boundary of the target bandwidth is 50MHz, the subcarrier spacing of the first channel in the target bandwidth is 960kHz, and the position of the first synchronization grid in the target bandwidth is the fifty-first position; Fig.42 As shown in (b), when the thirty-fourth combination is: the subcarrier spacing of SSB is 240kHz, the reserved bandwidth at the boundary of the target bandwidth is 0MHz, the subcarrier spacing of the first channel within the target bandwidth is 480kHz, and the position of the first synchronization grid within the target bandwidth is the fifty-second position; the fifty-first position is different from the fifty-second position.

[0154] In S202, the terminal determines the frequency domain position of the SSB according to the position of the first synchronization grid within the target bandwidth.

[0155] Among them, the index of the frequency domain position of the SSB in the resource position of the SSB is the index of the position of the first synchronization grid in the target bandwidth. The terminal determines the position of the first synchronization grid in the target bandwidth, that is, the terminal determines the frequency domain position of the SSB. The frequency domain position of the SSB is the position for transmitting the SSB, that is, the SSB may be received at these positions, but these positions are not necessarily the actual transmission positions of the SSB.

[0156] In a possible example, the number of frequency domain positions of the SSB is multiple, and the terminal determines the frequency domain position of the SSB according to the position of the first synchronization grid within the target bandwidth, including: determining the positions of one or more second synchronization grids within the target bandwidth according to the position of the first synchronization grid within the target bandwidth; determining the frequency domain position of the SSB according to the position of the first synchronization grid within the target bandwidth and the positions of one or more second synchronization grids within the target bandwidth.

[0157] Wherein, determining the position of one or more second synchronization grids within the target bandwidth according to the position of the first synchronization grid within the target bandwidth includes: determining the position of one or more second synchronization grids within the target bandwidth according to the position of the first synchronization grid within the target bandwidth and the frequency offset between the synchronization grids.

[0158] like Fig.43 As shown, assuming that the position of the first synchronization grid within the target bandwidth is A, and the frequency offset between the synchronization grids is B, then the position of the second synchronization grid adjacent to the first synchronization grid within the target bandwidth is A+B or AB; finally, the position of the second synchronization grid within the target bandwidth is determined.

[0159] In a possible example, the terminal detects the SSB according to the frequency domain position of the SSB; and determines one or more of the following information according to the detection result of the SSB: the subcarrier spacing of the SSB, the size of the target bandwidth, and the information of the first channel. That is to say, the terminal has determined the position for SSB transmission, and then according to whether the SSB is actually received at the position, it knows whether the corresponding subcarrier spacing, the size of the target bandwidth, and the information of the first channel are adopted. That is to say, when the terminal initially accesses, it is not sure about the size of the target bandwidth and the subcarrier spacing of the SSB adopted by the system. However, since the division method of the position of the first synchronization grid corresponding to different target bandwidth sizes and / or different SSB subcarrier spacings within the target bandwidth is different, the terminal blindly detects the SSB at the possible first synchronization grid position in each division method. If an SSB is detected at a certain position, the terminal can determine one or more of the following information according to the detection result of the SSB: the subcarrier spacing of the SSB, the size of the target bandwidth, and the information of the first channel.

[0160] In an embodiment of the present application, a network device sends a synchronization signal block SSB, the frequency domain position of the SSB is associated with a first synchronization grid, and the first synchronization grid is associated with one or more of the following information: the subcarrier spacing of the SSB, the size of the target bandwidth, the size of the reserved bandwidth at the boundary of the target bandwidth, and the information of the first channel within the target bandwidth, wherein the frequency range of the first channel does not overlap with the SSB. For details, please refer to the terminal measurement, which will not be repeated here.

[0161] In the solution provided in an embodiment of the present application, the terminal is able to determine the position of the first synchronization grid within the target bandwidth, and the position of the first synchronization grid within the target bandwidth is associated with one or more of the following information: the subcarrier spacing of the SSB, the size of the target bandwidth, the size of the reserved bandwidth located at the boundary of the target bandwidth, and the information of the first channel within the target bandwidth, and based on the position of the first synchronization grid within the target bandwidth, the frequency domain position of the SSB is determined, thereby searching for the SSB.

[0162] See also Fig.44 , is a schematic diagram of the structure of a terminal provided in an embodiment of the present application. Fig.44 As shown, the terminal may include: a processor 4410 and a memory 4420. Optionally, the terminal further includes a transceiver 4430. The memory 4420 is used to store a computer program or instruction 4421. The transceiver 4430 is used to receive and send data. The processor 4410 is used to call the computer program or instruction to perform the following operations:

[0163] Determine a position of a first synchronization grid within a target bandwidth, wherein the first synchronization grid is used to determine a frequency domain position of a synchronization signal block SSB within the target bandwidth, wherein the position of the first synchronization grid within the target bandwidth is associated with one or more of the following information:

[0164] The subcarrier spacing of the SSB, the size of the target bandwidth, the size of the reserved bandwidth located at the boundary of the target bandwidth, and information of a first channel within the target bandwidth, wherein the frequency range of the first channel does not overlap with the SSB;

[0165] The frequency domain position of the SSB is determined according to the position of the first synchronization grid within the target bandwidth.

[0166] In one possible design, the associated information of the position of the first synchronization grid within the target bandwidth includes: the size of the target bandwidth.

[0167] In one possible design, when the size of the target bandwidth is a first value, the position of the first synchronization grid is a first position; when the size of the target bandwidth is a second value, the position of the first synchronization grid is a second position, wherein the first position is different from the second position.

[0168] In one possible design, the first value is greater than the second value; the first position is lower than the second position, or the first position is higher than the second position.

[0169] In one possible design, the associated information of the position of the first synchronization grid within the target bandwidth includes: the subcarrier spacing of the SSB.

[0170] In one possible design, when the subcarrier spacing of the SSB is the first subcarrier spacing, the position of the first synchronization grid is the third position; when the subcarrier spacing of the SSB is the second subcarrier spacing, the position of the first synchronization grid is the fourth position, wherein the third position is different from the fourth position.

[0171] In one possible design, the first subcarrier spacing is greater than the second subcarrier spacing; the third position is lower than the fourth position, or the third position is higher than the fourth position.

[0172] In one possible design, the associated information of the position of the first synchronization grid within the target bandwidth includes: the size of the reserved bandwidth.

[0173] In one possible design, when the size of the reserved bandwidth is a third value, the position of the first synchronization grid is the fifth position; when the size of the reserved bandwidth is a fourth value, the position of the first synchronization grid is the sixth position, wherein the fifth position is different from the sixth position.

[0174] In one possible design, the third value is greater than the fourth value, wherein the fourth value is greater than or equal to 0 Hz; the fifth position is lower than the sixth position, or the fifth position is higher than the sixth position.

[0175] In one possible design, the transceiver 4430 is also used to receive first indication information from a network device, where the first indication information is used to indicate the size of the reserved bandwidth.

[0176] In one possible design, the associated information of the position of the first synchronization grid within the target bandwidth includes: information of the first channel; the information of the first channel includes one or more of the following information: subcarrier spacing of the first channel; bandwidth size of the first channel; type of the first channel; number of the first channels; frequency domain position of the first channel. In one possible design, the first channel is a channel occupied by a control resource set coreset.

[0177] In one possible design, the information of the first channel includes a multiplexing pattern of the coreset and the SSB, and the multiplexing pattern is used to represent the time-frequency position relationship between the coreset and the SSB.

[0178] In one possible design, the information of the first channel includes the subcarrier spacing of the coreset and / or the bandwidth size of the coreset.

[0179] In one possible design, the first channel is a channel within the target bandwidth and has a frequency domain position higher than the SSB.

[0180] In one possible design, the processor 4410 is further used to detect the SSB based on the frequency domain position of the SSB; and determine one or more of the following information based on the detection result of the SSB: the subcarrier spacing of the SSB, the size of the target bandwidth, and the information of the first channel.

[0181] In one possible design, the processor 4410 is further used to determine the position of one or more second synchronization grids within the target bandwidth based on the position of the first synchronization grid within the target bandwidth; and determine the frequency domain position of the SSB based on the position of the first synchronization grid within the target bandwidth and the position of the one or more second synchronization grids within the target bandwidth.

[0182] In one possible design, the processor 4410 is further used to determine the position of one or more second synchronization grids within the target bandwidth based on the position of the first synchronization grid within the target bandwidth and the frequency offset between synchronization grids.

[0183] See also Fig.45 , is a schematic diagram of the structure of a network device provided in an embodiment of the present application. Fig.45 As shown, the network device may include: a processor 4510 and a memory 4520. Optionally, the terminal further includes a transceiver 4530. The memory 4520 is used to store a computer program or instruction 4521. The transceiver 4530 is used to receive and send data. The processor 4510 is used to call the computer program or instruction to perform the following operations:

[0184] A synchronization signal block SSB is sent through the transceiver 4530, wherein the frequency domain position of the SSB is associated with a first synchronization grid, and the first synchronization grid is associated with one or more of the following information:

[0185] The subcarrier spacing of the SSB, the size of the target bandwidth, the size of the reserved bandwidth located at the boundary of the target bandwidth, and information of a first channel within the target bandwidth, wherein the frequency range of the first channel does not overlap with the SSB.

[0186] In one possible design, the associated information of the position of the first synchronization grid within the target bandwidth includes: the size of the target bandwidth.

[0187] In one possible design, the processor 4510 is also used to determine the position of the first synchronization grid within the target bandwidth.

[0188] In one possible design, the position of the first synchronization grid within the target bandwidth is associated with one or more of the following information: the subcarrier spacing of the SSB, the size of the target bandwidth, the size of the reserved bandwidth at the boundary of the target bandwidth, and information of the first channel within the target bandwidth, wherein the frequency range of the first channel does not overlap with the SSB.

[0189] In one possible design, when the size of the target bandwidth is a first value, the position of the first synchronization grid is a first position; when the size of the target bandwidth is a second value, the position of the first synchronization grid is a second position, wherein the first position is different from the second position.

[0190] In one possible design, the first value is greater than the second value; the first position is lower than the second position, or the first position is higher than the second position.

[0191] In one possible design, the associated information of the position of the first synchronization grid within the target bandwidth includes: the subcarrier spacing of the SSB.

[0192] In one possible design, when the subcarrier spacing of the SSB is the first subcarrier spacing, the position of the first synchronization grid is the third position; when the subcarrier spacing of the SSB is the second subcarrier spacing, the position of the first synchronization grid is the fourth position, wherein the third position is different from the fourth position.

[0193] In one possible design, the first subcarrier spacing is greater than the second subcarrier spacing; the third position is lower than the fourth position, or the third position is higher than the fourth position.

[0194] In one possible design, the associated information of the position of the first synchronization grid within the target bandwidth includes: the size of the reserved bandwidth.

[0195] In one possible design, when the size of the reserved bandwidth is a third value, the position of the first synchronization grid is the fifth position; when the size of the reserved bandwidth is a fourth value, the position of the first synchronization grid is the sixth position, wherein the fifth position is different from the sixth position.

[0196] In one possible design, the third value is greater than the fourth value, wherein the fourth value is greater than or equal to 0 Hz; the fifth position is lower than the sixth position, or the fifth position is higher than the sixth position.

[0197] In one possible design, the transceiver 4530 is also used to send first indication information to the terminal, where the first indication information is used to indicate the size of the reserved bandwidth.

[0198] In one possible design, the associated information of the position of the first synchronization grid within the target bandwidth includes: information of the first channel; the information of the first channel includes one or more of the following information: subcarrier spacing of the first channel; bandwidth size of the first channel; type of the first channel; number of the first channels; and frequency domain position of the first channel.

[0199] In one possible design, the first channel is a channel occupied by the control resource set coreset.

[0200] In one possible design, the information of the first channel includes a multiplexing pattern of the coreset and the SSB, and the multiplexing pattern is used to represent the time-frequency position relationship between the coreset and the SSB.

[0201] In one possible design, the information of the first channel includes the subcarrier spacing of the coreset and / or the bandwidth size of the coreset.

[0202] In one possible design, the first channel is a channel within the target bandwidth and has a frequency domain position higher than the SSB.

[0203] In one possible design, the processor 4510 is further used to determine the position of one or more second synchronization grids within the target bandwidth based on the position of the first synchronization grid within the target bandwidth; and determine the frequency domain position of the SSB based on the position of the first synchronization grid within the target bandwidth and the position of the one or more second synchronization grids within the target bandwidth.

[0204] In one possible design, the processor 4510 is further used to determine the position of one or more second synchronization grids within the target bandwidth based on the position of the first synchronization grid within the target bandwidth and the frequency offset between synchronization grids.

[0205] See also Fig.46 , Fig.46 FIG. 2 shows another possible structural diagram of the terminal involved in the above embodiment. Fig.46 As shown, the terminal 4600 may include: a communication unit 4601 and a processing unit 4602. These units may perform the corresponding functions of the terminal in the above method example. The processing unit 4602 is used to control and manage the actions of the terminal. For example, the processing unit 4602 is used to support the terminal to execute Figure 2S201 to S202 in, and / or other processes for the technology described herein. The communication unit 4601 can be used to support communication between the terminal and other devices, such as communication between network devices. Optionally, the terminal can also include a storage unit for storing program codes and data of the network device.

[0206] Among them, the processing unit 4602 can be a processor or a controller, for example, a central processing unit (CPU), a general processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute various exemplary logic boxes, modules and circuits described in conjunction with the disclosure of this application. The processor can also be a combination that implements a computing function, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication unit 4601 can be a transceiver, a transceiver circuit, a radio frequency chip, etc., and the storage unit can be a memory.

[0207] The processing unit 4602 is configured to determine a position of a first synchronization grid within a target bandwidth, wherein the first synchronization grid is used to determine a frequency domain position of a synchronization signal block SSB within the target bandwidth, wherein the position of the first synchronization grid within the target bandwidth is associated with one or more of the following information:

[0208] The subcarrier spacing of the SSB, the size of the target bandwidth, the size of the reserved bandwidth located at the boundary of the target bandwidth, and information of a first channel within the target bandwidth, wherein the frequency range of the first channel does not overlap with the SSB;

[0209] The processing unit 4602 is used to determine the frequency domain position of the SSB according to the position of the first synchronization grid within the target bandwidth.

[0210] In one possible design, the associated information of the position of the first synchronization grid within the target bandwidth includes: the size of the target bandwidth.

[0211] In one possible design, when the size of the target bandwidth is a first value, the position of the first synchronization grid is a first position; when the size of the target bandwidth is a second value, the position of the first synchronization grid is a second position, wherein the first position is different from the second position.

[0212] In one possible design, the first value is greater than the second value; the first position is lower than the second position, or the first position is higher than the second position.

[0213] In one possible design, the associated information of the position of the first synchronization grid within the target bandwidth includes: the subcarrier spacing of the SSB.

[0214] In one possible design, when the subcarrier spacing of the SSB is the first subcarrier spacing, the position of the first synchronization grid is the third position; when the subcarrier spacing of the SSB is the second subcarrier spacing, the position of the first synchronization grid is the fourth position, wherein the third position is different from the fourth position.

[0215] In one possible design, the first subcarrier spacing is greater than the second subcarrier spacing; the third position is lower than the fourth position, or the third position is higher than the fourth position.

[0216] In one possible design, the associated information of the position of the first synchronization grid within the target bandwidth includes: the size of the reserved bandwidth.

[0217] In one possible design, when the size of the reserved bandwidth is a third value, the position of the first synchronization grid is the fifth position; when the size of the reserved bandwidth is a fourth value, the position of the first synchronization grid is the sixth position, wherein the fifth position is different from the sixth position.

[0218] In one possible design, the third value is greater than the fourth value, wherein the fourth value is greater than or equal to 0 Hz; the fifth position is lower than the sixth position, or the fifth position is higher than the sixth position.

[0219] In one possible design, the communication unit 4601 is used to receive first indication information from a network device, where the first indication information is used to indicate the size of the reserved bandwidth.

[0220] In one possible design, the associated information of the position of the first synchronization grid within the target bandwidth includes: information of the first channel; the information of the first channel includes one or more of the following information: subcarrier spacing of the first channel; bandwidth size of the first channel; type of the first channel; number of the first channels; and frequency domain position of the first channel.

[0221] In one possible design, the first channel is a channel occupied by the control resource set coreset.

[0222] In one possible design, the information of the first channel includes a multiplexing pattern of the coreset and the SSB, and the multiplexing pattern is used to represent the time-frequency position relationship between the coreset and the SSB.

[0223] In one possible design, the information of the first channel includes the subcarrier spacing of the coreset and / or the bandwidth size of the coreset.

[0224] In one possible design, the first channel is a channel within the target bandwidth and has a frequency domain position higher than the SSB.

[0225] In one possible design, the processing unit 4602 is used to detect the SSB according to the frequency domain position of the SSB; the processing unit 4602 is used to determine one or more of the following information based on the detection result of the SSB: the subcarrier spacing of the SSB, the size of the target bandwidth, and the information of the first channel.

[0226] In one possible design, the number of frequency domain positions of the SSB is multiple, and the processing unit 4602 is used to determine the positions of one or more second synchronization grids within the target bandwidth based on the position of the first synchronization grid within the target bandwidth; the processing unit 4602 is used to determine the frequency domain position of the SSB based on the position of the first synchronization grid within the target bandwidth and the positions of the one or more second synchronization grids within the target bandwidth.

[0227] In one possible design, the processing unit 4602 is used to determine the position of one or more second synchronization grids within the target bandwidth based on the position of the first synchronization grid within the target bandwidth and the frequency offset between synchronization grids.

[0228] See also Fig.47 , Fig.47 FIG. 4 is a schematic diagram showing another possible structure of the network device 4700 involved in the above embodiment. Fig.47 As shown, the network device 4700 may include: a communication unit 4701 and a processing unit 4702. Among them, these units can perform the corresponding functions of the terminal in the above method example. The processing unit 4702 is used to control and manage the actions of the network device, and the communication unit 4701 can be used to support the communication between the network device and other devices, such as communication with the terminal. Optionally, the network device may also include a storage unit for storing program code and data.

[0229] Among them, the processing unit 4702 can be a processor or a controller, for example, a central processing unit (CPU), a general processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute various exemplary logic boxes, modules and circuits described in conjunction with the disclosure of this application. The processor can also be a combination that implements a computing function, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication unit 4701 can be a transceiver, a transceiver circuit, a radio frequency chip, etc., and the storage unit can be a memory.

[0230] The communication unit 4701 is configured to send a synchronization signal block SSB, where the frequency domain position of the SSB is associated with a first synchronization grid, and the first synchronization grid is associated with one or more of the following information:

[0231] The subcarrier spacing of the SSB, the size of the target bandwidth, the size of the reserved bandwidth located at the boundary of the target bandwidth, and information of a first channel within the target bandwidth, wherein the frequency range of the first channel does not overlap with the SSB.

[0232] In one possible design, the processing unit 4702 is used to determine the position of the first synchronization grid within the target bandwidth.

[0233] In one possible design, the position of the first synchronization grid within the target bandwidth is associated with one or more of the following information: the subcarrier spacing of the SSB, the size of the target bandwidth, the size of the reserved bandwidth at the boundary of the target bandwidth, and information of the first channel within the target bandwidth, wherein the frequency range of the first channel does not overlap with the SSB.

[0234] In one possible design, the associated information of the position of the first synchronization grid within the target bandwidth includes: the size of the target bandwidth.

[0235] In one possible design, when the size of the target bandwidth is a first value, the position of the first synchronization grid is a first position; when the size of the target bandwidth is a second value, the position of the first synchronization grid is a second position, wherein the first position is different from the second position.

[0236] In one possible design, the first value is greater than the second value; the first position is lower than the second position, or the first position is higher than the second position.

[0237] In one possible design, the associated information of the position of the first synchronization grid within the target bandwidth includes: the subcarrier spacing of the SSB.

[0238] In one possible design, when the subcarrier spacing of the SSB is the first subcarrier spacing, the position of the first synchronization grid is the third position; when the subcarrier spacing of the SSB is the second subcarrier spacing, the position of the first synchronization grid is the fourth position, wherein the third position is different from the fourth position.

[0239] In one possible design, the first subcarrier spacing is greater than the second subcarrier spacing; the third position is lower than the fourth position, or the third position is higher than the fourth position.

[0240] In one possible design, the associated information of the position of the first synchronization grid within the target bandwidth includes: the size of the reserved bandwidth.

[0241] In one possible design, when the size of the reserved bandwidth is a third value, the position of the first synchronization grid is the fifth position; when the size of the reserved bandwidth is a fourth value, the position of the first synchronization grid is the sixth position, wherein the fifth position is different from the sixth position.

[0242] In one possible design, the third value is greater than the fourth value, wherein the fourth value is greater than or equal to 0 Hz; the fifth position is lower than the sixth position, or the fifth position is higher than the sixth position.

[0243] In one possible design, the communication unit 4701 is used to send first indication information to the terminal, where the first indication information is used to indicate the size of the reserved bandwidth.

[0244] In one possible design, the associated information of the position of the first synchronization grid within the target bandwidth includes: information of the first channel; the information of the first channel includes one or more of the following information: subcarrier spacing of the first channel; bandwidth size of the first channel; type of the first channel; number of the first channels; and frequency domain position of the first channel.

[0245] In one possible design, the first channel is a channel occupied by the control resource set coreset.

[0246] In one possible design, the information of the first channel includes a multiplexing pattern of the coreset and the SSB, and the multiplexing pattern is used to represent the time-frequency position relationship between the coreset and the SSB.

[0247] In one possible design, the information of the first channel includes the subcarrier spacing of the coreset and / or the bandwidth size of the coreset.

[0248] In one possible design, the first channel is a channel within the target bandwidth and has a frequency domain position higher than the SSB.

[0249] In one possible design, the number of frequency domain positions of the SSB is multiple, and the processing unit 4702 is used to determine the positions of one or more second synchronization grids within the target bandwidth based on the position of the first synchronization grid within the target bandwidth; the processing unit 4702 is used to determine the frequency domain position of the SSB based on the position of the first synchronization grid within the target bandwidth and the positions of the one or more second synchronization grids within the target bandwidth.

[0250] In one possible design, the processing unit is used to determine the position of one or more second synchronization grids within the target bandwidth based on the position of the first synchronization grid within the target bandwidth and the frequency offset between synchronization grids.

[0251] It is understood that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. The functional units in the embodiments of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware or in the form of software functional units.

[0252] An embodiment of the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program so that when the computer program is run on a computer, the computer program executes part or all of the steps described by the terminal or network device in the above method embodiment.

[0253] The present application also provides a computer program product, wherein the computer program product includes a computer program or instructions, so that when it is run on a computer, it executes some or all of the steps described by the terminal or network device in the above method embodiment. The computer program product can be a software installation package.

[0254] It can be understood that the first, second, third and various numerical numbers involved in this document are only distinguished for the convenience of description and are not used to limit the scope of the embodiments of the present application.

[0255] Those skilled in the art should be aware that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiments of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

Claims

1. A method for determining a synchronization signal block SSB frequency domain position, applied to a terminal, characterized in that: include: Determine a position of a first synchronization grid within a target bandwidth, wherein the first synchronization grid is used to determine a frequency domain position of a synchronization signal block SSB within the target bandwidth, wherein the position of the first synchronization grid within the target bandwidth is associated with one or more of the following information: The subcarrier spacing of the SSB, the size of the target bandwidth, the size of the reserved bandwidth located at the boundary of the target bandwidth, and information of a first channel within the target bandwidth, wherein the frequency range of the first channel does not overlap with the SSB; The frequency domain position of the SSB is determined according to the position of the first synchronization grid within the target bandwidth.

2. The method according to claim 1, characterized in that The associated information of the position of the first synchronization grid within the target bandwidth includes: the size of the target bandwidth.

3. The method according to claim 2, characterized in that When the size of the target bandwidth is a first value, the position of the first synchronization grid is a first position; When the size of the target bandwidth is a second value, the position of the first synchronization grid is a second position, wherein the first position is different from the second position.

4. The method according to any one of claims 1 to 3, characterized in that The associated information of the position of the first synchronization grid within the target bandwidth includes: the subcarrier spacing of the SSB.

5. The method according to claim 4, characterized in that When the subcarrier spacing of the SSB is the first subcarrier spacing, the position of the first synchronization grid is the third position; When the subcarrier spacing of the SSB is the second subcarrier spacing, the position of the first synchronization grid is the fourth position, wherein the third position is different from the fourth position.

6. A method for determining the frequency domain position of a synchronization signal block SSB, applied to a network device, characterized in that: include: A synchronization signal block SSB is sent, wherein the frequency domain position of the SSB is associated with a first synchronization grid, wherein the first synchronization grid is associated with one or more of the following information: The subcarrier spacing of the SSB, the size of the target bandwidth, the size of the reserved bandwidth located at the boundary of the target bandwidth, and information of the first channel within the target bandwidth, wherein the frequency range of the first channel does not overlap with the SSB.

7. The method according to claim 6, characterized in that The associated information of the position of the first synchronization grid within the target bandwidth includes: the size of the target bandwidth.

8. The method according to claim 7, characterized in that When the size of the target bandwidth is a first value, the position of the first synchronization grid is a first position; When the size of the target bandwidth is a second value, the position of the first synchronization grid is a second position, wherein the first position is different from the second position.

9. The method according to any one of claims 6 to 8, characterized in that The associated information of the position of the first synchronization grid within the target bandwidth includes: the subcarrier spacing of the SSB.

10. The method according to claim 9, characterized in that When the subcarrier spacing of the SSB is the first subcarrier spacing, the position of the first synchronization grid is the third position; When the subcarrier spacing of the SSB is the second subcarrier spacing, the position of the first synchronization grid is the fourth position, wherein the third position is different from the fourth position.

11. A terminal, characterized in that: Including processing unit, The processing unit is configured to determine a position of a first synchronization grid within a target bandwidth, wherein the first synchronization grid is used to determine a frequency domain position of a synchronization signal block SSB within the target bandwidth, wherein the position of the first synchronization grid within the target bandwidth is associated with one or more of the following information: The subcarrier spacing of the SSB, the size of the target bandwidth, the size of the reserved bandwidth located at the boundary of the target bandwidth, and information of a first channel within the target bandwidth, wherein the frequency range of the first channel does not overlap with the SSB; The processing unit is used to determine the frequency domain position of the SSB according to the position of the first synchronization grid within the target bandwidth.

12. The terminal according to claim 11, characterized in that: The associated information of the position of the first synchronization grid within the target bandwidth includes: the size of the target bandwidth.

13. The terminal according to claim 12, characterized in that: When the size of the target bandwidth is a first value, the position of the first synchronization grid is a first position; When the size of the target bandwidth is a second value, the position of the first synchronization grid is a second position, wherein the first position is different from the second position.

14. The terminal according to any one of claims 11 to 13, characterized in that: The associated information of the position of the first synchronization grid within the target bandwidth includes: the subcarrier spacing of the SSB.

15. The terminal according to claim 14, characterized in that: When the subcarrier spacing of the SSB is the first subcarrier spacing, the position of the first synchronization grid is the third position; When the subcarrier spacing of the SSB is the second subcarrier spacing, the position of the first synchronization grid is the fourth position, wherein the third position is different from the fourth position.

16. A network device, characterized in that: include: Communication unit, The communication unit is configured to send a synchronization signal block SSB, wherein the frequency domain position of the SSB is associated with a first synchronization grid, and the first synchronization grid is associated with one or more of the following information: The subcarrier spacing of the SSB, the size of the target bandwidth, the size of the reserved bandwidth located at the boundary of the target bandwidth, and information of the first channel within the target bandwidth, wherein the frequency range of the first channel does not overlap with the SSB.

17. The network device according to claim 16, characterized in that: The associated information of the position of the first synchronization grid within the target bandwidth includes: the size of the target bandwidth.

18. The network device according to claim 17, characterized in that: When the size of the target bandwidth is a first value, the position of the first synchronization grid is a first position; When the size of the target bandwidth is a second value, the position of the first synchronization grid is a second position, wherein the first position is different from the second position.

19. The network device according to any one of claims 16 to 18, characterized in that: The associated information of the position of the first synchronization grid within the target bandwidth includes: the subcarrier spacing of the SSB.

20. The network device according to claim 19, characterized in that: When the subcarrier spacing of the SSB is the first subcarrier spacing, the position of the first synchronization grid is the third position; When the subcarrier spacing of the SSB is the second subcarrier spacing, the position of the first synchronization grid is the fourth position, wherein the third position is different from the fourth position.

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