SSB transmission method and electronic equipment

Abstract

The invention provides an SSB transmission method and electronic equipment. A network device divides an SSB period into one or more SSB sub-periods with the same time length, the time length of each SSB sub-period is larger than or equal to a half frame, each SSB period comprises at least one non-empty SSB sub-period, and the non-empty SSB sub-period comprises candidate SSBs. According to the SSB scene, the number of candidate SSBs included in the non-null SSB sub-cycle can be determined. Therefore, the network equipment sends the first SSB in the SSB period based on the SSB scene, thereby realizing cell coverage of the network equipment. When a terminal enters a cell covered by a network device and carries out cell search, a first SSB can be detected. One or more non-empty SSB sub-periods can be set in one SSB period, so that the number of wave positions covered by a cell of network equipment is increased, the requirement of an NTN for the number of wave positions is met, and the method and the device are suitable for the NTN. Besides, by configuring the number of the non-empty SSB sub-cycles in each SSB cycle, different SSB scenes can be adapted, and the requirement of the NTN for the number of wave positions is met.

Description

Technical Field

[0001] The present disclosure relates to the field of data processing technology, and in particular to a SSB (Synchronization Signal and PBCH block, or SS / PBCH block, referred to as SSB) transmission method and electronic device. Background Art

[0002] In the fifth generation (5G) new radio (NR) technology, the terminal needs to perform cell search based on the mobility measurement results. Mobility measurement involves two reference signals, namely SSB and channel state information-reference signal (CSI-RS).

[0003] For SSB-based measurements, the network device can send multiple SSBs with different indexes within one SSB cycle. These SSBs occupy different time resources and point to different beam directions. Each beam direction can cover a beam footprint, thereby obtaining the benefits of high-gain beams on link budget while taking into account the area coverage of the entire cell.

[0004] However, with the introduction and development of 5G NR's non-terrestrial network (NTN) technology, higher requirements are placed on beam gain and cell coverage area, and the current cell coverage area can no longer meet the requirements. Summary of the invention

[0005] The present disclosure provides a SSB transmission method and electronic device to solve the problem of insufficient NTN wave position coverage.

[0006] In a first aspect, the present disclosure provides a method for transmitting a synchronization signal block (SSB), which is applied to a network device, and the method includes:

[0007] Based on the SSB scenario, a first SSB is sent in an SSB cycle, so that the terminal receives the first SSB when performing a cell search; the SSB cycle includes N SSB sub-cycles, where N is a positive integer; the time length of each SSB sub-cycle in the N SSB sub-cycles is equal, and the time length of each SSB sub-cycle is greater than or equal to one and a half frame; the N SSB sub-cycles include at least one non-empty SSB sub-cycle, the non-empty SSB sub-cycle includes candidate SSBs, and the number of candidate SSBs included in each non-empty SSB sub-cycle is determined based on the SSB scenario.

[0008] In some embodiments, the SSB mode to which the SSB scenario belongs includes: a first mode, a second mode, a third mode, a fourth mode, a fifth mode, a sixth mode or a seventh mode; the subcarrier spacing of the first mode is 15kHz; the subcarrier spacing of the second mode is 30kHz; the subcarrier spacing of the third mode is 30kHz; the subcarrier spacing of the fourth mode is 120kHz; the subcarrier spacing of the fifth mode is 240kHz; the subcarrier spacing of the sixth mode is 480kHz; and the subcarrier spacing of the seventh mode is 960kHz.

[0009] In some embodiments, the first mode includes at least one of the following scenarios: a first scenario, a second scenario, and a third scenario;

[0010] The first scenario refers to a scenario in which a non-shared spectrum channel access method is used and the carrier frequency is less than or equal to 3 GHz; each non-empty SSB sub-period in the first scenario includes 4 candidate SSBs;

[0011] The second scenario refers to a scenario in which a non-shared spectrum channel access method is used, and the carrier frequency is within the first frequency band FR1 and is greater than 3 GHz; each non-empty SSB sub-period in the second scenario includes 8 candidate SSBs;

[0012] The third scenario refers to a scenario using a shared spectrum channel access method; each non-empty SSB sub-period in the third scenario includes 10 candidate SSBs;

[0013] The second mode includes at least one of the following scenarios: the fourth scenario and the fifth scenario;

[0014] The fourth scenario refers to a scenario where the carrier frequency is less than or equal to 3 GHz; each non-empty SSB sub-period in the fourth scenario includes 4 candidate SSBs;

[0015] The fifth scenario refers to a scenario in which the carrier frequency is within FR1 and greater than 3 GHz; each non-empty SSB sub-cycle in the fifth scenario contains 8 candidate SSBs;

[0016] The third mode includes at least one of the following scenarios: the sixth scenario, the seventh scenario, the eighth scenario, the ninth scenario and the tenth scenario;

[0017] The sixth scenario refers to a scenario in which a non-shared spectrum channel access method is used for a paired spectrum operation method, and the carrier frequency is less than or equal to 3 GHz; each non-empty SSB sub-period in the sixth scenario contains 4 candidate SSBs;

[0018] The seventh scenario refers to a scenario in which a non-shared spectrum channel access method is used for paired spectrum operation, and the carrier frequency is within FR1 and greater than 3 GHz; each non-empty SSB sub-period in the seventh scenario contains 8 candidate SSBs;

[0019] The eighth scenario refers to a scenario in which a non-shared spectrum channel access method is used for a non-paired spectrum operation method, and the carrier frequency is less than 1.88 GHz; each non-empty SSB sub-period in the eighth scenario contains 4 candidate SSBs;

[0020] The ninth scenario refers to a scenario in which a non-shared spectrum channel access method is used for a non-paired spectrum operation method, and the carrier frequency is within FR1 and is greater than or equal to 1.88 GHz; each non-empty SSB sub-period in the ninth scenario contains 8 candidate SSBs;

[0021] The tenth scenario refers to a scenario using a shared spectrum channel access method; each non-empty SSB sub-period in the tenth scenario includes 20 candidate SSBs;

[0022] The fourth mode includes an eleventh scene;

[0023] The eleventh scenario refers to a scenario in which the carrier frequency is within the second band FR2 and within the band FR2-NTN allocated to the non-terrestrial network NTN in the second band; each non-empty SSB sub-cycle in the eleventh scenario includes 64 candidate SSBs;

[0024] The fifth mode includes a twelfth scene;

[0025] The twelfth scenario refers to a scenario in which the carrier frequency is within the first sub-band FR2-1 in the second band and within FR2-NTN; each non-empty SSB sub-period in the twelfth scenario includes 64 candidate SSBs;

[0026] The sixth mode includes a thirteenth scene;

[0027] The thirteenth scenario refers to a scenario in which the carrier frequency is within the second sub-band FR2-2 in the second band; each non-empty SSB sub-period in the thirteenth scenario includes 64 candidate SSBs;

[0028] The seventh mode includes a fourteenth scene;

[0029] The fourteenth scenario refers to a scenario in which the carrier frequency is within FR2-2; each non-empty SSB sub-period in the fourteenth scenario includes 64 candidate SSBs.

[0030] In some embodiments, the first mode further includes: a fifteenth scene and a sixteenth scene;

[0031] The fifteenth scenario refers to a scenario in which the carrier frequency is within the first sub-band FR1-1-NTN allocated to NTN in the first band; each non-empty SSB sub-period in the fifteenth scenario contains 4 candidate SSBs;

[0032] The sixteenth scenario refers to a scenario in which the carrier frequency is in the second sub-band FR1-2-NTN allocated to NTN in the first band; each non-empty SSB sub-period in the sixteenth scenario includes 8 candidate SSBs;

[0033] The second mode further includes: a seventeenth scene and an eighteenth scene;

[0034] The seventeenth scenario refers to a scenario in which the carrier frequency is within the FR1-1-NTN; each non-empty SSB sub-period in the seventeenth scenario includes 4 candidate SSBs;

[0035] The eighteenth scenario refers to a scenario in which the carrier frequency is within the FR1-2-NTN; each non-empty SSB sub-cycle in the eighteenth scenario includes 8 candidate SSBs;

[0036] The third mode further includes: a nineteenth scene, a twentieth scene, a twenty-first scene, and a twenty-second scene;

[0037] The nineteenth scenario refers to a scenario in which the carrier frequency is within the FR1-1-NTN; each non-empty SSB sub-period in the nineteenth scenario includes 4 candidate SSBs;

[0038] The 20th scenario refers to a scenario for paired spectrum operation mode, where the carrier frequency is within the FR1-2-NTN; each non-empty SSB sub-cycle in the 20th scenario includes 8 candidate SSBs;

[0039] The 21st scenario refers to a scenario for unpaired spectrum operation, where the carrier frequency is within the third sub-band FR1-3-NTN allocated to NTN in the first band; each non-empty SSB sub-period in the 21st scenario includes 4 candidate SSBs;

[0040] The 22nd scenario refers to a scenario for non-paired spectrum operation, where the carrier frequency is within the fourth sub-band FR1-4-NTN allocated to NTN in the first band; each non-empty SSB sub-period in the 22nd scenario includes 8 candidate SSBs.

[0041] In some embodiments, the first half-frame within the non-empty SSB sub-period includes a candidate SSB.

[0042] In some embodiments, the time length of the SSB sub-cycle includes: 5ms, 10ms, 20ms, 40ms, 80ms, 160ms, 320ms or 640ms.

[0043] In some embodiments, the first SSB also includes index information corresponding to each candidate SSB, and the index information corresponding to each candidate SSB in the index corresponding to each candidate SSB is used to identify the candidate SSB.

[0044] In some embodiments, the index information corresponding to each candidate SSB contained in the first SSB is determined according to the order of each candidate SSB in the first SSB.

[0045] In a second aspect, the present disclosure provides a method for transmitting a synchronization signal block SSB, which is applied to a terminal, and the method includes:

[0046] When performing a cell search, a first SSB is received, where the first SSB is sent by a network device in an SSB cycle based on an SSB scenario; the SSB cycle includes N SSB sub-cycles, where N is a positive integer; the time length of each SSB sub-cycle in the N SSB sub-cycles is equal, and the time length of each SSB sub-cycle is greater than or equal to one and a half frame; the N SSB sub-cycles include at least one non-empty SSB sub-cycle, where the non-empty SSB sub-cycle includes candidate SSBs, and the number of candidate SSBs included in each non-empty SSB sub-cycle is determined based on the SSB scenario.

[0047] In a third aspect, the present disclosure provides an electronic device, including a memory and a processor, wherein the memory stores a computer program executable on the processor, and when the processor executes the program, the method described in the first aspect is implemented.

[0048] In a fourth aspect, the present disclosure provides an electronic device, comprising a memory and a processor, wherein the memory stores a computer program executable on the processor, and when the processor executes the program, the method described in the second aspect is implemented.

[0049] In a fifth aspect, the present disclosure provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in the first aspect above.

[0050] In a sixth aspect, the present disclosure provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in the second aspect above.

[0051] The SSB transmission method and electronic device provided by the embodiment of the present disclosure, for each cell covered by the network device, divides the SSB cycle into one or more SSB sub-cycles of equal time length, the time length of each SSB sub-cycle is greater than or equal to half a frame, and each SSB cycle contains at least one non-empty SSB sub-cycle, and the non-empty SSB sub-cycle contains candidate SSBs. According to the SSB scenario, the number of candidate SSBs contained in the non-empty SSB sub-cycle can be determined. Thus, based on the SSB scenario, the network device sends the first SSB in the SSB cycle to achieve coverage of its own cell. When the terminal enters the cell covered by the network device and performs a cell search, the first SSB can be detected. One or more non-empty SSB sub-cycles can be set in an SSB cycle, thereby increasing the number of wave positions covered by the cell of the network device, meeting the requirements of the NTN for the number of wave positions, and being suitable for the NTN. In addition, by configuring the number of non-empty SSB sub-cycles in each SSB cycle, different SSB scenarios can be adapted to meet the requirements of the NTN for the number of wave positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 A schematic diagram of the structure of a SSB transmission system provided by an embodiment of the present disclosure;

[0053] Figure 2 An interactive schematic diagram of an SSB transmission method provided by an embodiment of the present disclosure;

[0054] Figure 3 A schematic diagram of an SSB index provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0055] In the present disclosure, "at least one" refers to one or more, and "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a alone, b alone, or c alone can represent: a alone, b alone, c alone, a and b in combination, a and c in combination, b and c in combination, or a, b, and c in combination, where a, b, and c can be single or multiple. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0056] In the NR system, the network equipment can send multiple SSBs in one SSB cycle. Each SSB in one SSB cycle occupies different time resources and points to different beam directions. Each beam direction can cover a wave position, thereby achieving area coverage of the entire cell. When the terminal performs a cell search, where the cell search is the process of the terminal obtaining time and frequency synchronization with the cell and detecting the physical layer cell ID of the cell, for example, cell selection, cell reselection or cell switching, the terminal can detect the SSB.

[0057] See also Figure 1 , Figure 1 The structure diagram of a SSB transmission system provided by the embodiment of the present disclosure is as follows. Figure 1 As shown, the SSB transmission system provided in this embodiment may include a network device 11 and a terminal 12. The terminal 12 may be one or more, Figure 1 A terminal is shown as an example, which does not constitute a limitation to the present disclosure.

[0058] Among them, the network device 11 can be a base station, which can be an evolved base station (evolutional node B, eNB or eNodeB) in long term evolution (LTE), or a terminal or relay station or access point that performs the base station function in V2X (vehicular to everything), device-to-device (Device-to-Device, D2D), and machine-to-machine (Machine-to-Machine, M2M) communications, or a base station in a 5G network, such as gNB, etc., or a base station in a future 6G network, which is not limited here.

[0059] Terminal 12: may be referred to as user equipment, access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent or user device. The terminal 12 may also be a satellite phone, a cellular phone, a smart phone, a wireless data card, a wireless modem, a machine type communication device, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device or a wearable device, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a terminal device in a 5G network, a terminal device in a 6G network, or a terminal in a future communication network, etc. In addition, the terminal 12 may also be a terminal device in an Internet of Things (IoT) system.

[0060] In the related art, the network device 11 periodically sends SSB, wherein the SSB period (SSBperiodicity) sent may include but is not limited to 5ms, 10ms, 20ms, 40ms, 80ms or 160ms. Among them, for the cell providing initial cell selection / initial access, the network device 11 actually only uses an SSB period of 5ms, 10ms or 20ms. The terminal 12 does not know the SSB period used by the network device 11 when performing initial cell selection / initial access, and usually performs SSB detection based on the assumption that the SSB period of the network device 11 is 20ms. Among them, the first half frame (Half Frame) of each SSB period sent by the network device 11 contains a group of candidate SSBs (Candidate SSB), and there are no candidate SSBs in the other half frames, wherein each candidate SSB points to a beam direction and covers a wave position. In different SSB scenarios, the number of candidate SSBs may be different, that is, the number of candidate SSBs in each SSB period can be determined according to the SSB scenario. It can be understood that, according to the SSB scenario, each SSB cycle contains a certain number of candidate SSBs, which is the number of candidate SSBs in the first half frame of the SSB cycle.

[0061] However, for 5G NR's NTN, the number of wavelets that need to be covered in each cell increases dramatically, which means that the number of candidate SSBs required in each SSB cycle increases, resulting in the current number of candidate SSBs in each SSB cycle being unable to meet this demand.

[0062] In view of the NTN scenario mentioned above, the present disclosure provides a method for transmitting SSB. For each cell covered by the network device, the network device divides the SSB cycle into one or more SSB sub-cycles of equal time length. The time length of each SSB sub-cycle is greater than or equal to half a frame. Each SSB cycle contains at least one non-empty SSB sub-cycle, and the non-empty SSB sub-cycle contains candidate SSBs. For each cell covered by the network device, the number of candidate SSBs contained in the non-empty SSB sub-cycle can be determined according to the SSB scenario. Thus, based on the SSB scenario, the network device sends the first SSB in the SSB cycle to achieve coverage of its own cell. When the terminal enters the cell covered by the network device and performs a cell search, the first SSB can be detected. One or more non-empty SSB sub-cycles can be set in an SSB cycle, thereby increasing the number of wave positions covered by the cell of the network device, meeting the NTN's requirements for the number of wave positions, and is suitable for NTN.

[0063] The technical solution provided by the present disclosure is described in detail below with specific embodiments.

[0064] See also Figure 2 , Figure 2 The following is an interactive diagram of a SSB transmission method provided by an embodiment of the present disclosure. Figure 2 As shown, the method provided in this embodiment can be applied to the above Figure 1 In the system of the embodiment shown, the network device in this embodiment can be the above Figure 1 The network device 11 in the embodiment shown, the terminal in this embodiment can be the above Figure 1 The terminal 12 in the illustrated embodiment. The method provided in this embodiment may include the following steps 201 and 202.

[0065] Step 201: The network device sends a first SSB based on the SSB scenario and in an SSB cycle.

[0066] The SSB period includes N SSB sub-periods, where N is a positive integer. The time length of each SSB sub-period in the N SSB sub-periods is equal, and the time length of each SSB sub-period is greater than or equal to half a frame. Exemplarily, the time length of each half frame may be 5 ms.

[0067] The N SSB sub-periods include at least one non-empty SSB sub-period. For the SSB sub-period, the SSB sub-period including the candidate SSB can be called a non-empty SSB sub-period, and correspondingly, the SSB sub-period not including the candidate SSB can be called an empty SSB sub-period.

[0068] Furthermore, the number of non-empty SSB sub-periods contained in each SSB period can be set according to the application scenario, for example, it can be set according to the current SSB scenario. In other words, the ratio between the number of non-empty SSB sub-periods and the number of empty SSB sub-periods in each SSB period can be set according to the application scenario.

[0069] The number of candidate SSBs included in each non-empty SSB sub-period is determined based on the SSB scenario.

[0070] The SSB scenario refers to a scenario in which the SSB mode (case) is subdivided according to at least information such as carrier frequency and whether it belongs to shared spectrum. Among them, shared spectrum refers to a frequency band that can be used together by multiple different entities (such as multiple operators, enterprises and individual users) under certain conditions. Through corresponding management mechanisms and technical requirements, it is ensured that multiple users can effectively coexist and avoid interference. In contrast to shared spectrum, non-shared spectrum refers to a dedicated frequency band allocated to a specific entity (such as a telecom operator) by a specific mobile network operator (Mobile Network Operator, MNO for short) or a national communications regulator.

[0071] Step 202: The terminal receives the first SSB when performing a cell search.

[0072] In this embodiment, for each cell covered, the network device divides the SSB cycle into one or more SSB sub-cycles of equal time length, the time length of each SSB sub-cycle is greater than or equal to half a frame, and each SSB cycle contains at least one non-empty SSB sub-cycle, and the non-empty SSB sub-cycle contains candidate SSBs. According to the SSB scenario, the number of candidate SSBs contained in the non-empty SSB sub-cycle can be determined. Thus, based on the SSB scenario, the network device sends the first SSB in the SSB cycle according to the number of candidate SSBs and the time distribution to achieve coverage of its own cell. When the terminal enters the cell covered by the network device and performs a cell search, the first SSB can be detected. One or more non-empty SSB sub-cycles can be set in an SSB cycle, thereby increasing the number of wave positions covered by the cell of the network device, meeting the NTN's demand for the number of wave positions, and is suitable for NTN. In addition, by configuring the number of non-empty SSB sub-cycles in each SSB cycle, different SSB scenarios can be adapted to meet the NTN's demand for the number of wave positions.

[0073] In some embodiments, the time length of a typical SSB cycle may include, but is not limited to, 5 ms, 10 ms, 20 ms, 40 ms, 80 ms, 160 ms, 320 ms, or 640 ms.

[0074] Furthermore, the SSB sub-cycle is less than or equal to the SSB cycle and greater than or equal to one half frame. The time length of the SSB sub-cycle may include but is not limited to: 5ms, 10ms, 20ms, 40ms, 80ms, 160ms, 320ms or 640ms.

[0075] In some scenarios, the 3rd Generation Partnership Project (3GPP) standard protocol defines multiple SSB modes, namely Mode A, Mode B, Mode C, Mode D, Mode E, Mode F, and Mode G. Among them, the subcarrier spacing of Mode A is 15kHz. The subcarrier spacing of Mode B is 30kHz. The subcarrier spacing of Mode C is 30kHz. The subcarrier spacing of Mode D is 120kHz. The subcarrier spacing of Mode E is 240kHz. The subcarrier spacing of Mode F is 480kHz. The subcarrier spacing of Mode G is 960kHz.

[0076] The SSB mode in the present disclosure can be determined according to the actual scenario, or the SSB mode division method in the 3GPP standard protocol can be used to better adapt to and achieve a smooth transition with the existing 3GPP standard. The following is an exemplary introduction to the SSB mode in the embodiments of the present disclosure.

[0077] Based on any of the above embodiments, the SSB mode to which the SSB scenario belongs may include but is not limited to: the first mode. The subcarrier spacing of the first mode is 15kHz. The first mode corresponds to mode A, that is, the first mode is a mode of the solution applied in this embodiment based on the mode division method of mode A.

[0078] Based on any of the above embodiments, the SSB mode to which the SSB scenario belongs may include but is not limited to: the second mode. The subcarrier spacing of the second mode is 30kHz. The second mode corresponds to mode B, that is, the second mode is a mode of the solution applied in this embodiment based on the mode division method of mode B.

[0079] Based on any of the above embodiments, the SSB mode to which the SSB scenario belongs may include but is not limited to: the third mode. The subcarrier spacing of the third mode is 30kHz. The third mode corresponds to mode C, that is, the third mode is a mode of the solution applied in this embodiment based on the mode division method of mode C.

[0080] Based on any of the above embodiments, the SSB mode to which the SSB scenario belongs may include but is not limited to: the fourth mode. The subcarrier spacing of the fourth mode is 120kHz. The fourth mode corresponds to mode D, that is, the fourth mode is a mode of the solution applied in this embodiment based on the mode division method of mode D.

[0081] Based on any of the above embodiments, the SSB mode to which the SSB scenario belongs may include but is not limited to: the fifth mode. The subcarrier spacing of the fifth mode is 240kHz. The fifth mode corresponds to mode E, that is, the fifth mode is a mode of the solution in this embodiment based on the mode division method of mode E.

[0082] Based on any of the above embodiments, the SSB mode to which the SSB scenario belongs may include but is not limited to: the sixth mode. The subcarrier spacing of the sixth mode is 480kHz. The sixth mode corresponds to mode F, that is, the sixth mode is a mode of the solution in this embodiment based on the mode division method of mode F.

[0083] Based on any of the above embodiments, the SSB mode to which the SSB scenario belongs may include but is not limited to: the seventh mode. The subcarrier spacing of the seventh mode is 960kHz. The seventh mode corresponds to mode G, that is, the seventh mode is a mode of the solution applied in this embodiment based on the mode division method of mode G.

[0084] Based on any of the above embodiments, the SSB mode to which the SSB scenario belongs may include but is not limited to: the first mode, second mode, third mode, fourth mode, fifth mode, sixth mode or seventh mode mentioned above.

[0085] In this embodiment, the SSB mode is divided according to the SSB mode in the 3GPP standard protocol, that is, it is derived from the SSB mode in the 3GPP standard protocol. When the method of this embodiment is applied, the changes to the existing network equipment are relatively small, and a smooth transition of the standard protocol can be achieved.

[0086] In some scenarios, the 3GPP standard protocol divides the scenarios for each of the multiple SSB modes defined above, so that each SSB mode can include at least one scenario. The following introduces the scenarios included in each SSB mode in combination with the SSB modes in the 3GPP standard protocol mentioned above.

[0087] For Mode A: Mode A includes three scenarios, namely, scenario A1, scenario A2 and scenario A3.

[0088] Scenario A1 refers to a scenario where a non-shared spectrum channel access method is used and the carrier frequency is less than or equal to 3 GHz. In each SSB cycle in scenario A1, 4 candidate SSBs are included.

[0089] Scenario A2 refers to a scenario in which a non-shared spectrum channel access method is used and the carrier frequency is within the first frequency band (FR1) and greater than 3 GHz. In each SSB cycle in scenario A2, 8 candidate SSBs are included.

[0090] Among them, according to the relevant specifications of 3GPP, FR1 refers to the frequency band ranging from 450MHz to 6GHz.

[0091] Scenario A3 refers to a scenario using a shared spectrum channel access method, wherein each SSB cycle in scenario A3 includes 10 candidate SSBs.

[0092] For Mode B: Mode B includes two scenarios, namely, scenario B1 and scenario B2.

[0093] Scenario B1 refers to a scenario where the carrier frequency is less than or equal to 3 GHz. Each SSB cycle in scenario B1 contains 4 candidate SSBs.

[0094] Scenario B2 refers to a scenario where the carrier frequency is within FR1 and greater than 3 GHz. Each SSB cycle in scenario B2 contains 8 candidate SSBs.

[0095] For mode C: Mode C includes 5 scenarios, namely scenario C1, scenario C2, scenario C3, scenario C4 and scenario C5.

[0096] Scenario C1 refers to a scenario using a non-shared spectrum channel access method for paired spectrum operation, and a carrier frequency less than or equal to 3 GHz. Each SSB cycle in scenario C1 contains 4 candidate SSBs.

[0097] Scenario C2 refers to the scenario where a non-shared spectrum channel access method is used for paired spectrum operation, and the carrier frequency is within FR1 and greater than 3 GHz. Each SSB cycle in scenario C2 contains 8 candidate SSBs.

[0098] Scenario C3 refers to the use of non-shared spectrum channel access, for non-paired spectrum operation, and a scenario with a carrier frequency less than 1.88 GHz. Each SSB cycle in scenario C3 contains 4 candidate SSBs.

[0099] Scenario C4 refers to the scenario where a non-shared spectrum channel access method is used for non-paired spectrum operation, and the carrier frequency is within FR1 and greater than or equal to 1.88 GHz. Each SSB cycle in scenario C4 contains 8 candidate SSBs.

[0100] Scenario C5 refers to a scenario using a shared spectrum channel access method, wherein each SSB cycle in scenario C5 contains 20 candidate SSBs.

[0101] For mode D: Mode D includes one scene, which is scene D1.

[0102] Scenario D1 refers to a scenario where the carrier frequency is within the second band (FR2) and within the band (FR2-NTN) allocated to NTN in the second band. Each SSB cycle in scenario D1 includes 64 candidate SSBs.

[0103] Among them, according to the relevant specifications of 3GPP, FR2 refers to the millimeter wave frequency band, which ranges from 24.25GHz to 52.6GHz.

[0104] Among them, according to the relevant specifications of 3GPP, the frequency bands used by FR2-NTN mainly include the following frequency bands:

[0105] n257: 26.5GHz to 29.5GHz;

[0106] n258: 24.25 GHz to 27.5 GHz;

[0107] n261: 37 GHz to 40 GHz;

[0108] n260: 37 GHz to 40 GHz;

[0109] n261:47.2GHz to 48.2GHz.

[0110] For Mode E: Mode E includes one scene, which is Scene E1.

[0111] Scenario E1 refers to a scenario where the carrier frequency is within the first sub-band (FR2-1) in the second band and within FR2-NTN. Each SSB cycle in scenario E1 contains 64 candidate SSBs.

[0112] Among them, according to the relevant specifications of 3GPP, FR2-1 refers to the frequency band ranging from 24.25GHz to 29.5GHz.

[0113] For mode F: Mode F includes one scene, which is scene F1.

[0114] Scenario F1 refers to a scenario in which the carrier frequency is within the second sub-band FR2-2 in the second band. Each SSB cycle in scenario F1 includes 64 candidate SSBs.

[0115] Among them, according to the relevant specifications of 3GPP, FR2-2 refers to the frequency band ranging from 37GHz to 52.6GHz.

[0116] For mode G: Mode G includes one scene, which is scene G1.

[0117] Scenario G1 refers to a scenario where the carrier frequency is within FR2-2. Each SSB cycle in scenario G1 contains 64 candidate SSBs.

[0118] It can be seen from the above scenarios A1 to G1 that the number of candidate SSBs contained in each SSB cycle of the scenarios specified in the 3GPP standard protocol can be 4, 8, 10, 20 or 64. This cannot meet the NTN's requirement for the number of wave bits.

[0119] Based on the above situation, the SSB scenario in the present disclosure can be set according to the actual scenario, or the SSB scenario division method in the 3GPP standard protocol can be referred to, so as to better adapt to and achieve a smooth transition with the existing 3GPP standard protocol. The following is an exemplary introduction to the SSB scenario in the embodiment of the present disclosure.

[0120] Based on any of the above embodiments, the first mode may include but is not limited to the first scenario. The first scenario refers to a scenario in which a non-shared spectrum channel access method is used and the carrier frequency is less than or equal to 3 GHz. Each non-empty SSB sub-period in the first scenario contains 4 candidate SSBs. The first scenario corresponds to the above scenario A1, that is, the first scenario is set with reference to the above scenario A1.

[0121] Further, the time distribution of the four candidate SSBs included in each non-empty SSB sub-period in the first scenario may be the same as the time distribution of the four candidate SSBs included in scenario A1.

[0122] It should be noted that if the current SSB scenario is the first scenario, and each SSB cycle contains a non-empty SSB sub-cycle, the first SSB currently sent is the same as the SSB sent in the above scenario A1, thereby achieving a smooth transition to scenario A1 in the 3GPP standard protocol.

[0123] Based on any of the above embodiments, the first mode may include but is not limited to the second scenario. The second scenario refers to a scenario in which a non-shared spectrum channel access method is used and the carrier frequency is within FR1 and greater than 3 GHz. Each non-empty SSB sub-period in the second scenario contains 8 candidate SSBs. The second scenario corresponds to the above scenario A2, that is, the second scenario is set with reference to the above scenario A2.

[0124] Further, the time distribution of the 8 candidate SSBs included in each non-empty SSB sub-period in the second scenario may be the same as the time distribution of the 8 candidate SSBs included in scenario A2.

[0125] It should be noted that if the current SSB scenario is the second scenario, and each SSB cycle contains a non-empty SSB sub-cycle, the first SSB currently sent is the same as the SSB sent in the above scenario A2, thereby achieving a smooth transition to scenario A2 in the 3GPP standard protocol.

[0126] Based on any of the above embodiments, the first mode may include but is not limited to the third scenario. The third scenario refers to a scenario in which a shared spectrum channel access method is used; each non-empty SSB sub-period in the third scenario includes 10 candidate SSBs. The third scenario corresponds to the above scenario A3, that is, the third scenario is set with reference to the above scenario A3.

[0127] Further, the time distribution of the 10 candidate SSBs included in each non-empty SSB sub-period in the third scenario may be the same as the time distribution of the 10 candidate SSBs included in scenario A3.

[0128] It should be noted that if the current SSB scenario is the third scenario, and each SSB cycle contains a non-empty SSB sub-cycle, the first SSB currently sent is the same as the SSB sent in the above scenario A3, thereby achieving a smooth transition to scenario A3 in the 3GPP standard protocol.

[0129] Based on any of the above embodiments, the second mode may include but is not limited to the fourth scenario. The fourth scenario refers to a scenario where the carrier frequency is less than or equal to 3 GHz; each non-empty SSB sub-period in the fourth scenario includes 4 candidate SSBs. The fourth scenario corresponds to the above scenario B1, that is, the fourth scenario is set with reference to the above scenario B1.

[0130] Furthermore, the time distribution of the four candidate SSBs included in each non-empty SSB sub-period in the fourth scenario may be the same as the time distribution of the four candidate SSBs included in scenario B1.

[0131] It should be noted that if the current SSB scenario is the fourth scenario, and each SSB cycle contains a non-empty SSB sub-cycle, the first SSB currently sent is the same as the SSB sent in the above scenario B1, thereby achieving a smooth transition to scenario B1 in the 3GPP standard protocol.

[0132] Based on any of the above embodiments, the second mode may include but is not limited to the fifth scenario. The fifth scenario refers to a scenario in which the carrier frequency is within FR1 and greater than 3 GHz; each non-empty SSB sub-period in the fifth scenario includes 8 candidate SSBs. The fifth scenario corresponds to the above scenario B2, that is, the fifth scenario is set with reference to the above scenario B2.

[0133] Furthermore, the time distribution of the eight candidate SSBs included in each non-empty SSB sub-period in the fifth scenario may be the same as the time distribution of the eight candidate SSBs included in scenario B2.

[0134] It should be noted that if the current SSB scenario is the fifth scenario, and each SSB cycle contains a non-empty SSB sub-cycle, the first SSB currently sent is the same as the SSB sent in the above scenario B2, thereby achieving a smooth transition to scenario B2 in the 3GPP standard protocol.

[0135] Based on any of the above embodiments, the third mode may include but is not limited to the sixth scenario. The sixth scenario refers to a scenario in which a non-shared spectrum channel access method is used for a paired spectrum operation method, and the carrier frequency is less than or equal to 3 GHz; each non-empty SSB sub-period in the sixth scenario contains 4 candidate SSBs. The sixth scenario corresponds to the above scenario C1, that is, the sixth scenario is set with reference to the above scenario C1.

[0136] Furthermore, the time distribution of the four candidate SSBs included in each non-empty SSB sub-period in the sixth scenario may be the same as the time distribution of the four candidate SSBs included in scenario C1.

[0137] It should be noted that if the current SSB scenario is the sixth scenario, and each SSB cycle contains a non-empty SSB sub-cycle, the first SSB currently sent is the same as the SSB sent in the above scenario C1, thereby achieving a smooth transition to scenario C1 in the 3GPP standard protocol.

[0138] Based on any of the above embodiments, the third mode may include but is not limited to the seventh scenario. The seventh scenario refers to a scenario in which a non-shared spectrum channel access method is used for a paired spectrum operation method, and the carrier frequency is within FR1 and greater than 3 GHz; each non-empty SSB sub-period in the seventh scenario contains 8 candidate SSBs. The seventh scenario corresponds to the above scenario C2, that is, the seventh scenario is set with reference to the above scenario C2.

[0139] Furthermore, the time distribution of the eight candidate SSBs included in each non-empty SSB sub-period in the seventh scenario may be the same as the time distribution of the eight candidate SSBs included in scenario C2.

[0140] It should be noted that if the current SSB scenario is the seventh scenario, and each SSB cycle contains a non-empty SSB sub-cycle, the first SSB currently sent is the same as the SSB sent in the above scenario C2, thereby achieving a smooth transition to scenario C2 in the 3GPP standard protocol.

[0141] Based on any of the above embodiments, the third mode may include but is not limited to the eighth scenario. The eighth scenario refers to a scenario in which a non-shared spectrum channel access method is used for a non-paired spectrum operation method, and the carrier frequency is less than 1.88 GHz; each non-empty SSB sub-period in the eighth scenario contains 4 candidate SSBs. The eighth scenario corresponds to the above scenario C3, that is, the eighth scenario is set with reference to the above scenario C3.

[0142] Furthermore, the time distribution of the four candidate SSBs included in each non-empty SSB sub-period in the eighth scenario may be the same as the time distribution of the four candidate SSBs included in scenario C3.

[0143] It should be noted that if the current SSB scenario is the eighth scenario, and each SSB cycle contains a non-empty SSB sub-cycle, the first SSB currently sent is the same as the SSB sent in the above scenario C3, thereby achieving a smooth transition to scenario C3 in the 3GPP standard protocol.

[0144] Based on any of the above embodiments, the third mode may include but is not limited to the ninth scenario. The ninth scenario refers to a scenario in which a non-shared spectrum channel access method is used for a non-paired spectrum operation method, and the carrier frequency is within FR1 and is greater than or equal to 1.88 GHz; each non-empty SSB sub-period in the ninth scenario contains 8 candidate SSBs. The ninth scenario corresponds to the above scenario C4, that is, the ninth scenario is set with reference to the above scenario C4.

[0145] Further, the time distribution of the eight candidate SSBs included in each non-empty SSB sub-period in the ninth scenario may be the same as the time distribution of the eight candidate SSBs included in scenario C4.

[0146] It should be noted that if the current SSB scenario is the ninth scenario, and each SSB cycle contains a non-empty SSB sub-cycle, the first SSB currently sent is the same as the SSB sent in the above scenario C4, thereby achieving a smooth transition to scenario C4 in the 3GPP standard protocol.

[0147] Based on any of the above embodiments, the third mode may include but is not limited to the tenth scenario. The tenth scenario refers to a scenario using a shared spectrum channel access method; each non-empty SSB sub-period in the tenth scenario includes 20 candidate SSBs. The tenth scenario corresponds to the above scenario C5, that is, the tenth scenario is set with reference to the above scenario C5.

[0148] Further, the time distribution of the 20 candidate SSBs included in each non-empty SSB sub-period in the tenth scenario may be the same as the time distribution of the 20 candidate SSBs included in scenario C5.

[0149] It should be noted that if the current SSB scenario is the tenth scenario, and each SSB cycle contains a non-empty SSB sub-cycle, the first SSB currently sent is the same as the SSB sent in the above scenario C5, thereby achieving a smooth transition to scenario C5 in the 3GPP standard protocol.

[0150] Based on any of the above embodiments, the fourth mode may include but is not limited to the eleventh scenario. The eleventh scenario refers to a scenario in which the carrier frequency is within the second band FR2 and within the band FR2-NTN allocated to the non-terrestrial network NTN in the second band. Each non-empty SSB sub-period in the eleventh scenario includes 64 candidate SSBs. The eleventh scenario corresponds to the above scenario D1, that is, the eleventh scenario is set with reference to the above scenario D1.

[0151] Further, the time distribution of 64 candidate SSBs included in each non-empty SSB sub-period in the eleventh scenario may be the same as the time distribution of 64 candidate SSBs included in the scenario D1.

[0152] It should be noted that if the current SSB scenario is the eleventh scenario, and each SSB cycle contains a non-empty SSB sub-cycle, the first SSB currently sent is the same as the SSB sent in the above scenario D1, thereby achieving a smooth transition to scenario D1 in the 3GPP standard protocol.

[0153] Based on any of the above embodiments, the fifth mode may include but is not limited to the twelfth scenario. The twelfth scenario refers to a scenario in which the carrier frequency is within the first sub-band FR2-1 in the second band and within FR2-NTN; each non-empty SSB sub-period in the twelfth scenario includes 64 candidate SSBs. The twelfth scenario corresponds to the above scenario E1, that is, the twelfth scenario is set with reference to the above scenario E1.

[0154] Further, the time distribution of 64 candidate SSBs included in each non-empty SSB sub-period in the twelfth scenario may be the same as the time distribution of 64 candidate SSBs included in the scenario E1.

[0155] It should be noted that if the current SSB scenario is the twelfth scenario, and each SSB cycle contains a non-empty SSB sub-cycle, the first SSB currently sent is the same as the SSB sent in the above scenario E1, thereby achieving a smooth transition to scenario E1 in the 3GPP standard protocol.

[0156] Based on any of the above embodiments, the sixth mode may include but is not limited to the thirteenth scenario. The thirteenth scenario refers to a scenario in which the carrier frequency is within the second sub-band FR2-2 in the second band; each non-empty SSB sub-period in the thirteenth scenario includes 64 candidate SSBs. The thirteenth scenario corresponds to the above scenario F1, that is, the thirteenth scenario is set with reference to the above scenario F1.

[0157] Further, the time distribution of 64 candidate SSBs included in each non-empty SSB sub-period in the thirteenth scenario may be the same as the time distribution of 64 candidate SSBs included in the scenario F1.

[0158] It should be noted that if the current SSB scenario is the thirteenth scenario, and each SSB cycle contains a non-empty SSB sub-cycle, the first SSB currently sent is the same as the SSB sent in the above scenario F1, thereby achieving a smooth transition to scenario F1 in the 3GPP standard protocol.

[0159] Based on any of the above embodiments, the seventh mode may include but is not limited to the fourteenth scenario. The fourteenth scenario refers to a scenario in which the carrier frequency is within FR2-2; each non-empty SSB sub-period in the fourteenth scenario includes 64 candidate SSBs. The fourteenth scenario corresponds to the above scenario G1, that is, the fourteenth scenario is set with reference to the above scenario G1.

[0160] Further, the time distribution of 64 candidate SSBs included in each non-empty SSB sub-period in the fourteenth scenario may be the same as the time distribution of 64 candidate SSBs included in the scenario G1.

[0161] It should be noted that if the current SSB scenario is the fourteenth scenario, and each SSB cycle contains a non-empty SSB sub-cycle, the first SSB currently sent is the same as the SSB sent in the above scenario G1, thereby achieving a smooth transition to scenario G1 in the 3GPP standard protocol.

[0162] In some scenarios, NTN in 5G NR covers scenarios other than those defined in the above-mentioned 3GPP standard protocol. Therefore, in order to better adapt to NTN, the embodiments of the present disclosure may also provide one or more SSB scenarios for NTN. The following is an illustrative introduction to possible SSB scenarios for NTN. It can be understood that the following possible SSB scenarios for NTN are only examples and do not constitute a limitation on the SSB scenarios.

[0163] Based on any of the above embodiments, the first mode may include but is not limited to the fifteenth scenario. The fifteenth scenario refers to a scenario in which the carrier frequency is within the first sub-band allocated to NTN in the first band. Among them, the present disclosure does not limit the frequency range of the first sub-band allocated to NTN in the first band, and it can be set according to the actual scenario. In the present disclosure, FR1-1-NTN can be used to represent the first sub-band allocated to NTN in the first band. Each non-empty SSB sub-period in the fifteenth scenario contains 4 candidate SSBs.

[0164] Furthermore, the time distribution of the four candidate SSBs included in each non-empty SSB sub-period in the fifteenth scenario may be the same as the time distribution of the four candidate SSBs included in scenario A1.

[0165] Based on any of the above embodiments, the first mode may include but is not limited to the sixteenth scenario. The sixteenth scenario refers to the scenario in which the carrier frequency is within the second sub-band allocated to NTN in the first band. Among them, the present disclosure does not limit the frequency range of the second sub-band allocated to NTN in the first band, and it can be set according to the actual scenario. It should be noted that the second sub-band and the first sub-band can be the same or different, or there can be an intersection. In the present disclosure, FR1-2-NTN can be used to represent the second sub-band allocated to NTN in the first band. Each non-empty SSB sub-period in the sixteenth scenario contains 8 candidate SSBs.

[0166] Further, the time distribution of the eight candidate SSBs included in each non-empty SSB sub-period in the sixteenth scenario may be the same as the time distribution of the eight candidate SSBs included in scenario A2.

[0167] Based on any of the above embodiments, the second mode may include but is not limited to scenario 17. Scenario 17 refers to a scenario in which the carrier frequency is within FR1-1-NTN. Each non-empty SSB sub-period in scenario 17 includes 4 candidate SSBs.

[0168] Furthermore, the time distribution of the four candidate SSBs included in each non-empty SSB sub-period in the seventeenth scenario may be the same as the time distribution of the four candidate SSBs included in scenario B1.

[0169] Based on any of the above embodiments, the second mode may include but is not limited to scenario 18. Scenario 18 refers to a scenario in which the carrier frequency is within FR1-2-NTN. Each non-empty SSB sub-period in scenario 18 includes 8 candidate SSBs.

[0170] Further, the time distribution of the eight candidate SSBs included in each non-empty SSB sub-period in the eighteenth scenario may be the same as the time distribution of the eight candidate SSBs included in scenario B2.

[0171] Based on any of the above embodiments, the third mode may include but is not limited to the nineteenth scenario. The nineteenth scenario refers to a scenario in which the carrier frequency is within FR1-1-NTN. Each non-empty SSB sub-period in the nineteenth scenario includes four candidate SSBs.

[0172] Furthermore, the time distribution of the four candidate SSBs included in each non-empty SSB sub-period in the nineteenth scenario may be the same as the time distribution of the four candidate SSBs included in the scenario C1.

[0173] Based on any of the above embodiments, the third mode may include but is not limited to the twentieth scenario.

[0174] The twentieth scenario refers to the scenario used for paired spectrum operation, where the carrier frequency is within FR1-2-NTN.

[0175] Each non-empty SSB sub-period in the twentieth scenario contains 8 candidate SSBs.

[0176] Further, the time distribution of the eight candidate SSBs included in each non-empty SSB sub-period in the twentieth scenario may be the same as the time distribution of the eight candidate SSBs included in scenario C2.

[0177] Based on any of the above embodiments, the third mode may include but is not limited to the twenty-first scenario. The twenty-first scenario refers to a scenario for non-paired spectrum operation, in which the carrier frequency is within the third sub-band allocated to NTN in the first band. Among them, for the third sub-band allocated to NTN in the first band, the present disclosure does not limit its frequency range, which can be set according to the actual scenario. It should be noted that the third sub-band can be the same as or different from the first sub-band and the second sub-band, respectively, or there can be an intersection. In the present disclosure, FR1-3-NTN can be used to represent the third sub-band allocated to NTN in the first band. Each non-empty SSB sub-period in the twenty-first scenario contains 4 candidate SSBs.

[0178] Furthermore, the time distribution of the four candidate SSBs included in each non-empty SSB sub-period in the twenty-first scenario may be the same as the time distribution of the four candidate SSBs included in scenario C3.

[0179] Based on any of the above embodiments, the third mode may include but is not limited to the twenty-second scenario. The twenty-second scenario refers to a scenario for non-paired spectrum operation, where the carrier frequency is within the fourth sub-band allocated to NTN in the first band. Among them, for the fourth sub-band allocated to NTN in the first band, the present disclosure does not limit its frequency range, which can be set according to the actual scenario. It should be noted that the fourth sub-band can be the same as the first sub-band, the second sub-band and the third sub-band, respectively, or they can be different, or there can be an intersection. In the present disclosure, FR1-4-NTN can be used to represent the fourth sub-band allocated to NTN in the first band. Each non-empty SSB sub-period in the twenty-second scenario contains 8 candidate SSBs.

[0180] Further, the time distribution of the eight candidate SSBs included in each non-empty SSB sub-period in the twenty-first scenario may be the same as the time distribution of the eight candidate SSBs included in scenario C4.

[0181] In the above embodiment, the SSB scenario is expanded to be applied to NTN according to the demand of NTN.

[0182] In some scenarios, according to the 3GPP standard protocol, the candidate SSB is included in the first half frame of the SSB cycle, and accordingly, there is no candidate SSB in the other half frames of the SSB cycle except the first half frame.

[0183] In the method provided in this embodiment, in order to better be compatible with the existing 3GPP standard protocol, the candidate SSB can be included in the first half frame of each non-empty SSB sub-period. In addition, the time position distribution of the candidate SSB in the non-empty SSB sub-period in the present disclosure can also be set in other forms, and is not limited to the above-mentioned setting method.

[0184] The method provided by the present disclosure is described below with a specific example. The number of candidate SSBs that can be set within an SSB cycle will be described below in combination with different SSB cycles, the time length of SSB sub-cycles, and the number of non-empty sub-cycles.

[0185] Please refer to Table 1. When the SSB sub-cycle time length is 5ms, different SSB cycle time lengths and different numbers of candidate SSBs contained in each non-empty SSB sub-cycle correspond to the number of candidate SSBs contained in each SSB cycle. Among them, LbarMax represents the number of candidate SSBs contained in a non-empty SSB sub-cycle.

[0186] Among them, if the SSB period is set to 160ms, the number of system frames is 16. The SSB sub-period time length is 5ms, and the corresponding number of system frames is 0.5. The number of non-empty SSB sub-periods N=32. When LbarMax=4, this situation includes the above-mentioned first scenario, fourth scenario, sixth scenario, eighth scenario, fifteenth scenario, seventeenth scenario, nineteenth scenario and twenty-first scenario. The number of candidate SSBs in one SSB period is 128. The total number of candidate SSBs in each SSB period in this situation is higher than 64 in the 3GPP standard protocol. In addition, when the number of non-empty SSB sub-periods is 16, the total number of candidate SSBs is 64; when the number of non-empty SSB sub-periods is 8, the total number of candidate SSBs is 32; and so on, when the number of non-empty SSB sub-periods is 1, the total number of candidate SSBs is 4, which is the same as the 3GPP standard protocol.

[0187] In addition, for the case where the number of candidate SSBs in an SSB cycle is large, for example, in Table 1, the SSB cycle time length is 80ms and above, and LbarMax=64, the number of non-empty SSB sub-cycles in the SSB cycle can be reduced, that is, the number of empty SSB sub-cycles in the SSB cycle can be increased, thereby controlling the number of candidate SSBs in the SSB cycle to be within the system support range; the time length of the SSB cycle can also be reduced to control the number of candidate SSBs in the SSB cycle to be within the system support range.

[0188] Table 1: SSB sub-cycle time length is 5ms

[0189]

[0190]

[0191] Please refer to Table 2. When the SSB sub-cycle time length is 10ms, different numbers of candidate SSBs are included in different SSB cycle time lengths and each non-empty SSB sub-cycle, and the number of candidate SSBs included in each SSB cycle. Among them, LbarMax represents the number of candidate SSBs included in a non-empty SSB sub-cycle. Table 2 is similar to Table 1 above and will not be repeated here.

[0192] Table 2: SSB sub-cycle time length is 10ms

[0193]

[0194] Please refer to Table 3. When the SSB sub-cycle time length is 20ms, different numbers of candidate SSBs are included in different SSB cycle time lengths and each non-empty SSB sub-cycle, and the number of candidate SSBs included in each SSB cycle. Among them, LbarMax represents the number of candidate SSBs included in a non-empty SSB sub-cycle. Table 3 is similar to Table 1 above and will not be repeated here.

[0195] Table 3: SSB sub-cycle time length is 20ms

[0196]

[0197]

[0198] Please refer to Table 4. When the SSB sub-cycle time length is 40ms, different numbers of candidate SSBs are included in different SSB cycle time lengths and each non-empty SSB sub-cycle, and the number of candidate SSBs included in each SSB cycle. Among them, LbarMax represents the number of candidate SSBs included in a non-empty SSB sub-cycle. Table 4 is similar to Table 1 above and will not be repeated here.

[0199] Table 4: SSB sub-cycle time length is 40ms

[0200]

[0201] Please refer to Table 5. When the SSB sub-cycle time length is 80ms, different numbers of candidate SSBs are included in different SSB cycle time lengths and each non-empty SSB sub-cycle, and the number of candidate SSBs included in each SSB cycle. Among them, LbarMax represents the number of candidate SSBs included in a non-empty SSB sub-cycle. Table 5 is similar to Table 1 above and will not be repeated here.

[0202] Table 5: SSB sub-cycle time length is 80ms

[0203]

[0204]

[0205] Please refer to Table 6. When the SSB sub-cycle time length is 160ms, different SSB cycle time lengths and different numbers of candidate SSBs contained in each non-empty SSB sub-cycle correspond to the number of candidate SSBs contained in each SSB cycle. Among them, LbarMax represents the number of candidate SSBs contained in a non-empty SSB sub-cycle. Table 6 is similar to Table 1 above and will not be repeated here.

[0206] Table 6: SSB sub-cycle time length is 160ms

[0207]

[0208] It can be seen from the above examples that the method provided by the present invention can take into account the scenarios in the 3GPP standard protocol by flexibly setting the number of candidate SSBs in the non-empty SSB sub-period within the SSB period, and can also set the number of candidate SSBs greater than that in the 3GPP standard protocol, thereby achieving coverage of more wave positions in NTN application scenarios.

[0209] In some scenarios, within an SSB cycle, each candidate SSB corresponds to an index information, and different candidate SSBs correspond to different index information. The following is a detailed description with specific embodiments.

[0210] Based on any of the above embodiments, in the method provided in this embodiment, the first SSB also includes index information corresponding to each candidate SSB.

[0211] Among them, the index information corresponding to each candidate SSB in the index corresponding to each candidate SSB is used to identify the candidate SSB.

[0212] Furthermore, the index information corresponding to each candidate SSB contained in the first SSB is determined according to the order of each candidate SSB in the first SSB.

[0213] Exemplarily, the candidate SSBs in one SSB cycle can be indexed in ascending order from 0 to the total number of candidate SSBs in one SSB cycle - 1. Where M represents the total number of half frames with candidate SSBs in one SSB cycle, LbarMax represents the number of candidate SSBs in a non-empty SSB sub-cycle determined according to the SSB scenario, and the candidate SSBs in one SSB cycle can be indexed in ascending order from 0 to (M×LbarMax-1).

[0214] See also Figure 3 , Figure 3 A schematic diagram of an SSB index provided in an embodiment of the present disclosure. Figure 3 In the example, the time length of the SSB cycle is 40ms, the time length of the SSB sub-cycle is 20ms, the number of SSB sub-cycles in one SSB cycle is N=2, the number of non-empty SSB sub-cycles in one SSB cycle is M=2, the number of empty SSB sub-cycles in one SSB cycle is P=0, the number of candidate SSBs in one non-empty SSB sub-cycle is LbarMax=4, and the total number of candidate SSBs in one SSB cycle is 8. Then the SSB index can be as follows: Figure 3 As shown, at the corresponding time position, the SSB index information corresponding to the 8 candidate SSBs can be 0, 1, 2, 3, 4, 5, 6 and 7 respectively.

[0215] The following provides multiple examples to illustrate the method provided by the present disclosure. In the following examples, N represents the number of SSB sub-periods in one SSB period, M represents the number of non-empty SSB sub-periods in one SSB period, P represents the number of empty SSB sub-periods in one SSB period, LbarMax represents the number of candidate SSBs in one non-empty SSB sub-period, and M×LbarMax represents the total number of candidate SSBs in one SSB period.

[0216] When M>1, in the first scenario or the fifteenth scenario, LbarMax=4. If the time length of the SSB cycle is set to 160ms, the time length of the SSB sub-cycle is set to 20ms, N=8, M=8, P=0, then M×LbarMax=8×4=32. In this scenario, the network equipment can provide up to 32 wave-bits of SSB coverage in a cell. In the 3GPP standard protocol, in scenario A1, no matter how much the SSB cycle is set, a maximum of 4 wave-bits of SSB coverage can be provided for a cell.

[0217] When M>1, in the fourth or seventeenth scenario, LbarMax=4. If the time length of the SSB cycle is set to 20ms, the time length of the SSB sub-cycle is set to 5ms, N=4, where M=4, P=0, then M×LbarMax=4×4=16. In this scenario, the network equipment can provide 16-wavelength SSB coverage in a cell. In the 3GPP standard protocol, in scenario C2, no matter how much the SSB cycle is set, only 8-wavelength SSB coverage can be provided.

[0218] It should be noted that the SSB period set in this embodiment is 20ms, which is beneficial for being compatible with legacy terminals before Release-18 in 3GPP. According to the provisions in the 3GPP standard protocol, during the initial cell selection, legacy terminals detect SSB with a default SSB period of 20ms. Even when the network device uses this embodiment, the terminal can still detect SSB normally.

[0219] When M>1, in the seventh or twentieth scenario, LbarMax=8. If the time length of the SSB cycle is set to 320ms, the time length of the SSB sub-cycle is 20ms, N=16, where M=16, P=0, then M×LbarMax=16×8=256. In this scenario, the network equipment can provide 256 wave positions of SSB coverage in a cell. It can more fully meet the needs of NTN to cover a large number of wave positions. In the 3GPP standard protocol, in scenario C2, no matter how much the SSB cycle is set, a maximum of 8 wave positions of SSB coverage can be provided.

[0220] It can be seen from the above examples that when M>1, that is, when the number of non-empty SSB sub-cycles in an SSB cycle is greater than 1, it is possible to provide SSB coverage for more wave positions than the corresponding scenarios specified in the 3GPP standard protocol.

[0221] When M=1 is set, in the eleventh scenario, LbarMax=64. If the time length of the SSB cycle is set to 160ms, the time length of the SSB sub-cycle is set to 20ms, N=8, where M=1, P=15, it is equivalent to the case where the SSB cycle in the 3GPP standard protocol is 160, that is, 64 candidate SSBs are included in the first half frame.

[0222] As can be seen from the above example, by setting M=1, it helps to ensure the continuity and compatibility of technical standard changes and realize smooth evolution of technology.

[0223] Assume that the time length of the SSB cycle is 160ms, the time length of the SSB sub-cycle is 5ms, N=32, where M=16 and P=16. In the first scenario or the fifteenth scenario, LbarMax=4, M×LbarMax=16×4=64. In this scenario, in each 160ms SSB cycle, SSB is distributed in the first 80ms, and the second 80ms is not occupied by SSB, which can provide sufficient wireless resources for other channels.

[0224] Assume that the time length of the SSB cycle is 160ms, the time length of the SSB sub-cycle is 20ms, N=8, where M=2, P=6. In the eleventh scenario, LbarMax=64, M×LbarMax=2×64=128. In this scenario, the total number of candidate SSBs is 128, and the bit width of the required SSB index information is 7 bits. If the time length of the SSB cycle is kept at 160ms, the time length of the SSB sub-cycle is 20ms, and all SSB sub-cycles are non-empty SSB sub-cycles, the total number of candidate SSBs in one SSB cycle will reach 8×64=512, and the bit width of the required SSB index information will reach 9 bits.

[0225] It can be seen from the above example that in the case of setting an empty SSB sub-period in the SSB cycle, the non-empty SSB sub-period is set in the front section of the SSB cycle, and the empty SSB sub-period is set after all non-empty SSB sub-periods, that is, the SSB is not sent in the latter section of the SSB cycle, so that more time resources can be reserved for other channels. In addition, when the SSB cycle is relatively large and the SSB sub-period is relatively small, and the total number of candidate SSBs actually required is small, or the index information of the SSB is limited due to the limited bit width, resulting in a limited total number of candidate SSBs that it can indicate, then by setting an empty sub-period in the latter section of the SSB cycle, the total number of candidate SSBs can be controlled, and the number of bits required for the SSB index information indicating the candidate SSBs can be controlled at the same time.

[0226] In conjunction with Section 4.1 of the 3GPP standard protocol TS38.213, the following describes the modification methods of the standard protocol that may be involved in the solution of the present disclosure. In the following, taking Mode A as an example, the modification of Section 4.1 of the 3GPP standard protocol TS38.213 is described.

[0227] The relevant provisions for Mode A (Case A) in Section 4.1 of the 3GPP standard protocol TS38.213 are as follows:

[0228] -For a half-frame with SS / PBCH blocks, the first symbol index of the candidate SS / PBCH block is determined according to the SCS of the SS / PCCH block as follows, where index 0 corresponds to the first symbol of the first slot in the half-frame.

[0229] - Mode A - 15kHz SCS: The index of the first symbol of the candidate SS / PBCH block is {2,8}+14n.

[0230] - For non-shared spectrum channel access operations:

[0231] - For carrier frequencies less than or equal to 3 GHz, n = 0, 1

[0232] - For carrier frequencies in FR1 greater than 3 GHz, n = 0, 1, 2, 3

[0233] - Operation for shared spectrum channel access as described in [15, TS 37.213], n = 0, 1, 2, 3, 4

[0234] If the fifteenth and sixteenth scenarios in the present disclosure are needed at the same time, the provisions for the two cases where the carrier frequency is within FR1-1-NTN and the carrier frequency is within FR1-2-NTN are added on the basis of Section 4.1 of the above 3GPP standard protocol TS38.213. The following additional part 1 or additional part 2 can be added after the relevant provisions for mode A in the above standard protocol.

[0235] Added part 1:

[0236] -For NTN:

[0237] - For carrier frequencies within FR1-1-NTN, n = 0, 1

[0238] - For carrier frequencies within FR1-2-NTN, n = 0, 1, 2, 3

[0239] Correspondingly, the content of the changed mode A is as follows:

[0240] - Mode A - 15kHz SCS: The index of the first symbol of the candidate SS / PBCH block is {2,8}+14n.

[0241] - For non-shared spectrum channel access operations:

[0242] - For carrier frequencies less than or equal to 3 GHz, n = 0, 1

[0243] - For carrier frequencies in FR1 greater than 3 GHz, n = 0, 1, 2, 3

[0244] - Operation for shared spectrum channel access as described in [15, TS 37.213], n = 0, 1, 2, 3, 4

[0245] -For NTN:

[0246] - For carrier frequencies within FR1-1-NTN, n = 0, 1

[0247] - For carrier frequencies within FR1-2-NTN, n = 0, 1, 2, 3

[0248] Added part 2:

[0249] - For carrier frequencies within FR1-1-NTN, n = 0, 1

[0250] - For carrier frequencies within FR1-2-NTN, n = 0, 1, 2, 3

[0251] Correspondingly, the content of the changed mode A is as follows:

[0252] - Mode A - 15kHz SCS: The index of the first symbol of the candidate SS / PBCH block is {2,8}+14n.

[0253] - For non-shared spectrum channel access operations:

[0254] - For carrier frequencies less than or equal to 3 GHz, n = 0, 1

[0255] - For carrier frequencies in FR1 greater than 3 GHz, n = 0, 1, 2, 3

[0256] - For carrier frequencies within FR1-1-NTN, n = 0, 1

[0257] - For carrier frequencies within FR1-2-NTN, n = 0, 1, 2, 3

[0258] - Operation for shared spectrum channel access as described in [15, TS 37.213], n = 0, 1, 2, 3, 4

[0259] If only one of the fifteenth and sixteenth scenes exists, then one of the above two entries can be retained, as shown in the following example.

[0260] Example 1:

[0261] - Mode A - 15kHz SCS: The index of the first symbol of the candidate SS / PBCH block is {2,8}+14n.

[0262] - For non-shared spectrum channel access operations:

[0263] - For carrier frequencies less than or equal to 3 GHz, n = 0, 1

[0264] - For carrier frequencies in FR1 greater than 3 GHz, n = 0, 1, 2, 3

[0265] - For carrier frequencies within FR1-1-NTN, n = 0, 1

[0266] - Operations for shared spectrum channel access as described in [15, TS 37.213], n = 0, 1, 2, 3, 4 or, Example 2:

[0267] - Mode A - 15kHz SCS: The index of the first symbol of the candidate SS / PBCH block is {2,8}+14n.

[0268] - For non-shared spectrum channel access operations:

[0269] - For carrier frequencies less than or equal to 3 GHz, n = 0, 1

[0270] - For carrier frequencies in FR1 greater than 3 GHz, n = 0, 1, 2, 3

[0271] - For carrier frequencies within FR1-2-NTN, n = 0, 1, 2, 3

[0272] - Operation for shared spectrum channel access as described in [15, TS 37.213], n = 0, 1, 2, 3, 4

[0273] In some embodiments, for mode A, no matter in which scenario, if it is applied in an NTN scenario, the same method can be used for the number and time distribution of candidate SSBs in a non-empty SSB sub-period, see Example 3 or Example 4 below.

[0274] Example 3:

[0275] - Mode A - 15kHz SCS: The index of the first symbol of the candidate SS / PBCH block is {2,8}+14n.

[0276] - For non-shared spectrum channel access operations:

[0277] - For carrier frequencies less than or equal to 3 GHz, n = 0, 1

[0278] - For carrier frequencies in FR1 greater than 3 GHz, n = 0, 1, 2, 3

[0279] - For NTN operation, n = 0, 1

[0280] - Operations for shared spectrum channel access as described in [15, TS 37.213], n = 0, 1, 2, 3, 4 Example 4:

[0281] - Mode A - 15kHz SCS: The index of the first symbol of the candidate SS / PBCH block is {2,8}+14n.

[0282] - For non-shared spectrum channel access operations:

[0283] - For carrier frequencies less than or equal to 3 GHz, n = 0, 1

[0284] - For carrier frequencies in FR1 greater than 3 GHz, n = 0, 1, 2, 3

[0285] - For NTN operation, n = 0, 1, 2, 3

[0286] - Operation for shared spectrum channel access as described in [15, TS 37.213], n = 0, 1, 2, 3, 4

[0287] In Section 4.1 of the 3GPP standard protocol TS38.213, the index of the candidate SSB is specified as follows:

[0288] The candidate SSBs are indexed in ascending order from 0 to LbarMax-1 within a half frame, that is, the SSB index is 0, 1, 2, ..., LbarMax-1.

[0289] In the present disclosure, since there may be multiple half frames with candidate SSBs in one SSB cycle, the SSB index should globally index all candidate SSBs in one SSB cycle, that is, in one SSB cycle, all candidate SSBs have a one-to-one corresponding index. Therefore, changes can be made to the above-mentioned standard protocol, and the changed content can be the following Example 5 or Example 6.

[0290] Example 5:

[0291] The candidate SSBs in the mth half-frame with candidate SSBs in an SSB cycle are indexed in ascending order from m*LbarMax to (m+1)*LbarMax-1, where LbarMax is determined according to the SSB mode from mode A to mode G. m ranges from 0 to M-1, where M is the total number of half-frames with candidate SSBs in an SSB cycle.

[0292] Example 6:

[0293] The candidate SSBs in one SSB cycle are indexed in ascending order from 0 to M*LbarMax-1, where LbarMax is determined according to the SSB mode from mode A to mode G. m ranges from 0 to M-1, where M is the total number of half-frames with candidate SSBs in one SSB cycle.

[0294] Since the total number of candidate SSBs determines the bit width of the SSB index, it affects the terminal's decoding process of the SSB index. In order for the terminal to correctly demodulate the SSB index information, it is also necessary to specify the number of half frames (M) containing candidate SSBs within the SSB period, so that the total number of candidate SSBs (M*LbarMax) can be calculated in combination with LbarMax. This is explained in detail below.

[0295] The regulations for Mode A are as follows: Mode A-15kHz SCS: For NTN operation, M=8, where M is the total number of half-frames of candidate SSBs.

[0296] The regulations for Mode D are as follows: Mode D-120kHz SCS: For NTN operation, M=2, where M is the total number of half-frames of candidate SSBs.

[0297] For mode D, if M=2 and LbarMax=64, it can be inferred that the total number of candidate SSBs in the SSB period is M*LbarMax=128, and the bit width (number of bits) of the SSB index is 7 bits.

[0298] In some scenarios, in order to enable the terminal to determine its downlink timing synchronization based on the SSB index information demodulated from the SSB signal, in addition to the distribution of candidate SSBs within the specified half-frame as described above, it is also necessary to specify the distribution of these half-frames containing candidate SSBs. This can be achieved by specifying the interval between these half-frames, that is, the time length of the SSB sub-cycle.

[0299] For example, the interval between half frames containing candidate SSBs is set to 20ms. This method can be applied to all SSB modes of NTN, and the protocol can be modified as follows:

[0300] For NTN, half frames with SSB appear in 20ms sub-periods within one SSB period.

[0301] Exemplarily, the interval between half frames containing candidate SSBs may be specified for each SSB mode. Taking mode A as an example, the protocol may be modified as follows:

[0302] Mode A - 15kHz SCS: For NTN, half frames of SS / PBCH blocks within the SSB period occur in 20ms SSB sub-periods.

[0303] In some scenarios, in Section 4.1 of 3GPP standard protocol TS38.213, the following provisions are made for the initial cell selection of the terminal:

[0304] For initial cell selection, the terminal may assume that the half-frame with SSB appears for a period of 2 frames (equal to 20 ms).

[0305] In this disclosure, it can be modified as follows:

[0306] For initial cell selection, the terminal may assume that the period of appearance of candidate SSBs is 16 frames (equal to 160 ms).

[0307] Although there are multiple half frames with SSBs in one SSB cycle, that is, there are multiple groups of candidate SSBs, each group contains multiple candidate SSBs, but these candidate SSBs have different SSB indexes, and each appears at a specified period (160ms in this example). Moreover, since SSBs with different indexes are usually assigned to different wave positions, for a terminal in a wave position, the SSB assigned to the wave position can only be detected once in one SSB cycle. This embodiment stipulates that the terminal assumes that the SSB period is 160ms during the initial cell selection, which can ensure that the terminal continuously detects the SSB for at least 160ms. In this way, when the SSB period actually used by the base station is equal to 160ms or less than 160ms, it can ensure that the terminal will not miss the SSB due to insufficient detection time.

[0308] Furthermore, the above-mentioned terminal assuming that the SSB period is 160ms during the initial cell selection is only an example. It can also be stipulated that the terminal assumes that the SSB period is other time lengths during the initial cell selection. It can also be stipulated that the terminal assumes that the SSB period is 640ms during the initial cell selection to ensure that the terminal does not miss the SSB.

[0309] An embodiment of the present disclosure provides an electronic device, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the program, the steps performed by the network device in the method in the above embodiment are implemented.

[0310] An embodiment of the present disclosure provides an electronic device, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the program, the steps executed by the terminal in the method in the above embodiment are implemented.

[0311] Based on the SSB transmission method described in any of the above embodiments, the embodiment of the present disclosure further provides a computer-readable storage medium, for example, the non-temporary computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device, etc. The storage medium stores computer instructions for executing the steps performed by the network device in the transmission of the SSB described in any of the above embodiments, which will not be described in detail here.

[0312] Based on the SSB transmission method described in any of the above embodiments, the embodiment of the present disclosure further provides a computer-readable storage medium, for example, the non-temporary computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device, etc. The storage medium stores computer instructions for executing the steps performed by the terminal in the SSB transmission described in any of the above embodiments, which will not be described in detail here.

Claims

1. A method for transmitting a synchronization signal block SSB, characterized in that: Applied to a network device, the method comprises: Based on the SSB scenario, a first SSB is sent in an SSB cycle, so that the terminal receives the first SSB when performing a cell search; the SSB cycle includes N SSB sub-cycles, where N is a positive integer; the time length of each SSB sub-cycle in the N SSB sub-cycles is equal, and the time length of each SSB sub-cycle is greater than or equal to one and a half frame; the N SSB sub-cycles include at least one non-empty SSB sub-cycle, the non-empty SSB sub-cycle includes candidate SSBs, and the number of candidate SSBs included in each non-empty SSB sub-cycle is determined based on the SSB scenario.

2. The method according to claim 1, characterized in that The SSB modes to which the SSB scenario belongs include: the first mode, the second mode, the third mode, the fourth mode, the fifth mode, the sixth mode or the seventh mode; the subcarrier spacing of the first mode is 15kHz; the subcarrier spacing of the second mode is 30kHz; the subcarrier spacing of the third mode is 30kHz; the subcarrier spacing of the fourth mode is 120kHz; the subcarrier spacing of the fifth mode is 240kHz; the subcarrier spacing of the sixth mode is 480kHz; and the subcarrier spacing of the seventh mode is 960kHz.

3. The method according to claim 2, characterized in that The first mode includes at least one of the following scenarios: a first scenario, a second scenario, and a third scenario; The first scenario refers to a scenario in which a non-shared spectrum channel access method is used and the carrier frequency is less than or equal to 3 GHz; each non-empty SSB sub-period in the first scenario includes 4 candidate SSBs; The second scenario refers to a scenario in which a non-shared spectrum channel access method is used, and the carrier frequency is within the first frequency band FR1 and is greater than 3 GHz; each non-empty SSB sub-period in the second scenario includes 8 candidate SSBs; The third scenario refers to a scenario using a shared spectrum channel access method; each non-empty SSB sub-period in the third scenario includes 10 candidate SSBs; The second mode includes at least one of the following scenarios: the fourth scenario and the fifth scenario; The fourth scenario refers to a scenario where the carrier frequency is less than or equal to 3 GHz; each non-empty SSB sub-period in the fourth scenario includes 4 candidate SSBs; The fifth scenario refers to a scenario in which the carrier frequency is within FR1 and greater than 3 GHz; each non-empty SSB sub-cycle in the fifth scenario contains 8 candidate SSBs; The third mode includes at least one of the following scenarios: the sixth scenario, the seventh scenario, the eighth scenario, the ninth scenario and the tenth scenario; The sixth scenario refers to a scenario in which a non-shared spectrum channel access method is used for a paired spectrum operation method, and the carrier frequency is less than or equal to 3 GHz; each non-empty SSB sub-period in the sixth scenario contains 4 candidate SSBs; The seventh scenario refers to a scenario in which a non-shared spectrum channel access method is used for paired spectrum operation, and the carrier frequency is within FR1 and greater than 3 GHz; each non-empty SSB sub-period in the seventh scenario contains 8 candidate SSBs; The eighth scenario refers to a scenario in which a non-shared spectrum channel access method is used for a non-paired spectrum operation method, and the carrier frequency is less than 1.88 GHz; each non-empty SSB sub-period in the eighth scenario contains 4 candidate SSBs; The ninth scenario refers to a scenario in which a non-shared spectrum channel access method is used for a non-paired spectrum operation method, and the carrier frequency is within FR1 and is greater than or equal to 1.88 GHz; each non-empty SSB sub-period in the ninth scenario contains 8 candidate SSBs; The tenth scenario refers to a scenario using a shared spectrum channel access method; each non-empty SSB sub-period in the tenth scenario includes 20 candidate SSBs; The fourth mode includes an eleventh scene; The eleventh scenario refers to a scenario in which the carrier frequency is within the second band FR2 and within the band FR2-NTN allocated to the non-terrestrial network NTN in the second band; each non-empty SSB sub-cycle in the eleventh scenario includes 64 candidate SSBs; The fifth mode includes a twelfth scene; The twelfth scenario refers to a scenario in which the carrier frequency is within the first sub-band FR2-1 in the second band and within FR2-NTN; each non-empty SSB sub-period in the twelfth scenario includes 64 candidate SSBs; The sixth mode includes a thirteenth scene; The thirteenth scenario refers to a scenario in which the carrier frequency is within the second sub-band FR2-2 in the second band; each non-empty SSB sub-period in the thirteenth scenario includes 64 candidate SSBs; The seventh mode includes a fourteenth scene; The fourteenth scenario refers to a scenario in which the carrier frequency is within FR2-2; each non-empty SSB sub-period in the fourteenth scenario includes 64 candidate SSBs.

4. The method according to claim 3, characterized in that The first mode further includes: a fifteenth scene and a sixteenth scene; The fifteenth scenario refers to a scenario in which the carrier frequency is within the first sub-band FR1-1-NTN allocated to NTN in the first band; each non-empty SSB sub-period in the fifteenth scenario includes 4 candidate SSBs; The sixteenth scenario refers to a scenario in which the carrier frequency is in the second sub-band FR1-2-NTN allocated to NTN in the first band; each non-empty SSB sub-period in the sixteenth scenario includes 8 candidate SSBs; The second mode further includes: a seventeenth scene and an eighteenth scene; The seventeenth scenario refers to a scenario in which the carrier frequency is within the FR1-1-NTN; each non-empty SSB sub-period in the seventeenth scenario includes 4 candidate SSBs; The eighteenth scenario refers to a scenario in which the carrier frequency is within the FR1-2-NTN; each non-empty SSB sub-period in the eighteenth scenario includes 8 candidate SSBs; The third mode further includes: a nineteenth scene, a twentieth scene, a twenty-first scene, and a twenty-second scene; The nineteenth scenario refers to a scenario in which the carrier frequency is within the FR1-1-NTN; each non-empty SSB sub-period in the nineteenth scenario includes 4 candidate SSBs; The 20th scenario refers to a scenario for paired spectrum operation mode, where the carrier frequency is within the FR1-2-NTN; each non-empty SSB sub-cycle in the 20th scenario includes 8 candidate SSBs; The 21st scenario refers to a scenario for unpaired spectrum operation, where the carrier frequency is within the third sub-band FR1-3-NTN allocated to NTN in the first band; each non-empty SSB sub-period in the 21st scenario includes 4 candidate SSBs; The 22nd scenario refers to a scenario for non-paired spectrum operation, where the carrier frequency is within the fourth sub-band FR1-4-NTN allocated to NTN in the first band; each non-empty SSB sub-period in the 22nd scenario includes 8 candidate SSBs.

5. The method according to any one of claims 1 to 4, characterized in that: The first half frame in the non-empty SSB sub-period contains the candidate SSB.

6. The method according to any one of claims 1 to 4, characterized in that: The time length of the SSB sub-cycle includes: 5ms, 10ms, 20ms, 40ms, 80ms, 160ms, 320ms or 640ms.

7. The method according to any one of claims 1 to 4, characterized in that: The first SSB also includes index information corresponding to each candidate SSB, and the index information corresponding to each candidate SSB in the index corresponding to each candidate SSB is used to identify the candidate SSB.

8. The method according to claim 7, characterized in that The index information corresponding to each candidate SSB contained in the first SSB is determined according to the order of each candidate SSB in the first SSB.

9. A method for transmitting a synchronization signal block SSB, characterized in that: Applied to a terminal, the method comprises: When performing a cell search, a first SSB is received, where the first SSB is sent by a network device in an SSB cycle based on an SSB scenario; the SSB cycle includes N SSB sub-cycles, where N is a positive integer; the time length of each SSB sub-cycle in the N SSB sub-cycles is equal, and the time length of each SSB sub-cycle is greater than or equal to one and a half frame; the N SSB sub-cycles include at least one non-empty SSB sub-cycle, where the non-empty SSB sub-cycle includes candidate SSBs, and the number of candidate SSBs included in each non-empty SSB sub-cycle is determined based on the SSB scenario.

10. An electronic device comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor executes the program, the steps of the method according to any one of claims 1 to 8 are implemented, or the steps of the method according to claim 9 are implemented.

Images