Synchronization signal block SSB receiving method and device

Abstract

Provided in an embodiment of the present application are a method and device for receiving a synchronization signal block (SSB), the method comprising: receiving an SSB sent by a network device, the SSB comprising a serial number of the SSB, the serial number is obtained through one or more of the following items: SSB serial number indication, a system frame number indication field in a main information block MIB, a common subcarrier interval indication field in the MIB, a half-frame indication field in the MIB, idle bits in the MIB, a subcarrier offset indication field and a control channel indication field. The method and the device are used for indicating one SSB in a plurality of SSBs to a terminal, namely indicating one beam direction in a plurality of beam directions to the terminal so as to match the terahertz communication requirement.

Description

Technical Field

[0001] Embodiments of the present application relate to the technical fields such as communication, and in particular, to a method and device for receiving a Synchronization Signal Block (SSB). Background Art

[0002] As the frequency point in wireless communication increases, the path loss of wireless signals during spatial propagation also increases. Therefore, it is necessary to use narrower beams to receive or transmit wireless signals to compensate for the path loss. When using narrower beams, more beams are required to achieve the coverage of a cell.

[0003] Each beam has a corresponding beam direction. In the process of using more beams to achieve the coverage of a cell, how to indicate a beam direction among more beam directions to the terminal to meet the communication requirements of terahertz has become a technical problem to be solved urgently. Summary of the Invention

[0004] Embodiments of the present application provide a method and device for receiving a Synchronization Signal Block (SSB), which are used to indicate a beam direction among more beam directions to the terminal.

[0005] In a first aspect, embodiments of the present application provide a method for receiving a Synchronization Signal Block (SSB), which is applied to a terminal. The method includes:

[0006] Receiving an SSB sent by a network device, where the SSB includes the serial number of the SSB;

[0007] The serial number is obtained through one or more of the following:

[0008] SSB serial number indication;

[0009] System frame number indication field in the Master Information Block (MIB);

[0010] Common subcarrier spacing indication field in the MIB;

[0011] Half-frame indication field in the MIB;

[0012] Spare bits in the MIB;

[0013] Subcarrier offset indication field;

[0014] Control channel indication field.

[0015] In some embodiments, the SSB set where the SSB is located includes 2 m SSBs, and m is a natural number greater than or equal to 7.

[0016] In some embodiments, m is equal to 7, and the serial number is obtained by 6 bits in the SSB serial number indication and any one of the following:

[0017] 1 bit in the system frame number indication field;

[0018] 1 bit in the common subcarrier spacing indication field;

[0019] 1 bit in the half-frame indication field.

[0020] In some embodiments, m is equal to 8, and the serial number is obtained by 6 bits in the SSB serial number indication and any one of the following:

[0021] 1 bit in the system frame number indication field and 1 bit in the common subcarrier spacing indication field;

[0022] 1 bit in the common subcarrier spacing indication field and 1 bit in the half-frame indication field;

[0023] 1 bit in the system frame number indication field and 1 bit in the half-frame indication field.

[0024] In some embodiments, m is equal to 8, and the serial number is obtained by 6 bits in the SSB serial number indication, 1 bit in the common subcarrier spacing indication field, and 1 bit in the subcarrier offset indication field.

[0025] In some embodiments, m is equal to 8, and the serial number is obtained by 6 bits in the SSB serial number indication, 1 bit in the subcarrier offset indication field, and 1 bit in the idle bit.

[0026] In some embodiments, m is equal to 8, and the serial number is obtained by X bits in the SSB serial number indication and Y bits in the control channel indication field; where the sum of X and Y is equal to 8, X is a natural number greater than or equal to 1 and less than or equal to 6, and Y is a natural number greater than or equal to 2 and less than or equal to 7.

[0027] In some embodiments, m is equal to 9, and the serial number is obtained by 6 bits in the SSB serial number indication, 1 bit in the common subcarrier spacing indication field, 1 bit in the half-frame indication field, and 1 bit in the subcarrier offset indication field.

[0028] In some embodiments, m is equal to 9, and the serial number is obtained by 6 bits in the SSB serial number indication, 1 bit in the common subcarrier spacing indication field, 1 bit in the subcarrier offset indication field, and 1 bit in the idle bit.

[0029] In some embodiments, m is equal to 9, and the serial number is obtained through 6 bits in the SSB serial number indication and 3 newly added bits in the MIB; or,

[0030] obtained through 6 bits in the SSB serial number indication and 3 newly added bits in the control channel indication field; or,

[0031] obtained through 6 bits in the SSB serial number indication, and N newly added bits in the control channel indication field and / or M newly added bits in the broadcast channel; where the sum of N and M is equal to 3, N is a natural number greater than or equal to 0 and less than or equal to 3, and M is a natural number greater than or equal to 0 and less than or equal to 3.

[0032] In some embodiments, the value indicated by 3 bits in the subcarrier offset indication field is used to indicate that the offset value between the first subcarrier of a resource block of the SSB and the first subcarrier of the common resource block is equal to 1 subcarrier.

[0033] In some embodiments, the value K indicated by 3 bits in the subcarrier offset indication field is used to indicate that the offset value between the first subcarrier of a resource block of the SSB and the first subcarrier of the common resource block is equal to (K·Z) subcarriers; where K is a natural number greater than or equal to 0 and less than or equal to 7, Z is a natural number greater than or equal to 2, and · represents a multiplication operation.

[0034] In a second aspect, an embodiment of the present application provides a receiving device for a synchronization signal block SSB, which is applied to a terminal, and the device includes:

[0035] a receiving module, configured to receive the SSB sent by a network device, where the SSB includes the serial number of the SSB;

[0036] The serial number is obtained through one or more of the following:

[0037] SSB serial number indication;

[0038] the system frame number indication field in the master information block MIB;

[0039] the common subcarrier spacing indication field in the MIB;

[0040] the half-frame indication field in the MIB;

[0041] the spare bits in the MIB;

[0042] subcarrier offset indication field;

[0043] control channel indication field.

[0044] In some embodiments, the SSB set where the SSB is located includes 2 ma SSB, where m is a natural number greater than or equal to 7.

[0045] In some embodiments, m equals 7, and the serial number is obtained through 6 bits in the SSB serial number indication and any one of the following:

[0046] 1 bit in the system frame number indication field;

[0047] 1 bit in the common subcarrier spacing indication field;

[0048] 1 bit in the half-frame indication field.

[0049] In some embodiments, m equals 8, and the serial number is obtained through 6 bits in the SSB serial number indication and any one of the following:

[0050] 1 bit in the system frame number indication field and 1 bit in the common subcarrier spacing indication field;

[0051] 1 bit in the common subcarrier spacing indication field and 1 bit in the half-frame indication field;

[0052] 1 bit in the system frame number indication field and 1 bit in the half-frame indication field.

[0053] In some embodiments, m equals 8, and the serial number is obtained through 6 bits in the SSB serial number indication, 1 bit in the common subcarrier spacing indication field, and 1 bit in the subcarrier offset indication field.

[0054] In some embodiments, m equals 8, and the serial number is obtained through 6 bits in the SSB serial number indication, 1 bit in the subcarrier offset indication field, and 1 bit in the idle bit.

[0055] In some embodiments, m equals 8, and the serial number is obtained through X bits in the SSB serial number indication and Y bits in the control channel indication field;

[0056] The sum of X and Y equals 8, X is a natural number greater than or equal to 1 and less than or equal to 6, and Y is a natural number greater than or equal to 2 and less than or equal to 7.

[0057] In some embodiments, m equals 9, and the serial number is obtained through 6 bits in the SSB serial number indication, 1 bit in the common subcarrier spacing indication field, 1 bit in the half-frame indication field, and 1 bit in the subcarrier offset indication field.

[0058] In some embodiments, m is equal to 9, and the serial number is obtained through 6 bits in the SSB serial number indication, 1 bit in the common subcarrier spacing indication field, 1 bit in the subcarrier offset indication field, and 1 bit in the spare bit.

[0059] In some embodiments, m is equal to 9, and the serial number is obtained through 6 bits in the SSB serial number indication and 3 new bits in the MIB; or,

[0060] obtained through 6 bits in the SSB serial number indication and 3 new bits in the control channel indication field; or,

[0061] obtained through 6 bits in the SSB serial number indication, and N new bits in the control channel indication field and / or M new bits in the broadcast channel; where the sum of N and M is equal to 3, N is a natural number greater than or equal to 0 and less than or equal to 3, and M is a natural number greater than or equal to 0 and less than or equal to 3.

[0062] In some embodiments, the value indicated by 3 bits in the subcarrier offset indication field is used to indicate that the offset value of the first subcarrier of a resource block of the SSB from the first subcarrier of the common resource block is equal to 1 subcarrier.

[0063] In some embodiments, the value K indicated by 3 bits in the subcarrier offset indication field is used to indicate that the offset value of the first subcarrier of a resource block of the SSB from the first subcarrier of the common resource block is equal to (K·Z) subcarriers, where K is a natural number greater than or equal to 0 and less than or equal to 7, Z is a natural number greater than or equal to 2, and · represents a multiplication operation.

[0064] In a third aspect, an embodiment of the present application provides a communication device, including: a memory and a processor;

[0065] The memory stores computer-executable instructions;

[0066] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the method according to any one of the first aspect.

[0067] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, they are used to implement the method according to any one of the first aspect.

[0068] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, and when the computer program is executed by a processor, it implements the method according to any one of the first aspect.

[0069] Sixth aspect, an embodiment of the present application provides a chip, on which a computer program is stored. When the computer program is executed by the chip, the method according to any one of the first aspect is implemented.

[0070] Seventh aspect, an embodiment of the present application provides a chip module, on which a computer program is stored. When the computer program is executed by the chip module, the method according to any one of the first aspect is implemented.

[0071] An embodiment of the present application provides a method and apparatus for receiving a synchronization signal block (SSB). The method includes: sending an SSB to a terminal, where the SSB includes the serial number of the SSB, and the serial number is obtained through one or more of the following: SSB serial number indication, system frame number indication field in the master information block (MIB), common subcarrier spacing indication field in the MIB, half-frame indication field in the MIB, idle bits in the MIB, subcarrier offset indication field, control channel indication field. It can be used to indicate one SSB among multiple SSBs to the terminal, that is, to indicate one beam direction among multiple beam directions to the terminal, so as to meet the communication requirements of terahertz. Description of the Drawings

[0072] To more clearly illustrate the technical solutions in the present application, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0073] Figure 1 It is a schematic diagram of the SSB burst set transmission time;

[0074] Figure 2 It is a schematic diagram of beam scanning in the TDM mode;

[0075] Figure 3 It is the method for receiving a synchronization signal block (SSB) provided by an embodiment of the present application;

[0076] Figure 4 It is a schematic structural diagram of the apparatus for receiving a synchronization signal block (SSB) provided by an embodiment of the present application;

[0077] Figure 5 It is a schematic structural diagram of the communication device provided by an embodiment of the present application.

[0078] Through the above drawings, the clear embodiments of the present application have been shown, and more detailed descriptions will be given later. These drawings and text descriptions are not intended to limit the scope of the concept of the present application in any way, but to explain the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed Embodiments

[0079] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0080] In 5G New Radio (NR), the Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), Physical Broadcast Channel (PBCH), and Demodulation Reference Signals for PBCH (PBSH-DMRS) together constitute a Synchronization Signal Block SSB (SS / PBCH Block).

[0081] Currently, network devices usually need to send multiple SSBs to complete a beam sweep so that the synchronization signal covers the service area of the entire cell. The SSBs required to complete a beam sweep form an SSB burst set.

[0082] In 5G NR technology, beam sweeping is supported in a time-division multiplexing (TDM) manner, and beam sweeping in a Frequency Division Multiplexing (FDM) manner is not supported. The reason is that the FDM method is not applicable to terminals using analog beamforming, and NR technology requires that all terminals in the cell can receive the SSB. Therefore, beam sweeping in the FDM method is not supported in NR technology.

[0083] Figure 1 is a schematic diagram of the SSB burst set transmission time. As Figure 1 shown, an SSB burst set includes 8 SSBs. The transmission time of the SSB burst set is within 5 milliseconds (ms) (i.e., half a radio frame) of the SSB period. The 8 SSBs include: SSB0, SSB1, SSB2, SSB3, SSB4, SSB5, SSB6, and SSB7.

[0084] Figure 2 is a schematic diagram of beam sweeping in the TDM method. On the basis of Figure 1 as Figure 2As shown, eight SSBs are sent using eight beams in different directions. Among them, one SSB corresponds to one beam direction.

[0085] Currently, as the frequency point in wireless communication increases, the path loss of wireless signals during spatial propagation also increases. Therefore, narrower beams need to be used to receive or send wireless signals to compensate for the path loss. When using more beams, more beams are required to cover a cell. Each beam has a corresponding beam direction. During the process of using more beams to cover a cell, how to indicate one beam direction among more beam directions to the terminal to match the communication requirements of terahertz has become a technical problem to be solved urgently.

[0086] To achieve indicating one beam direction among more beam directions and match the communication requirements of terahertz, this application provides a method for receiving an SSB. The terminal receives the SSB sent by the network device. The SSB includes the serial number of the SSB, and this serial number is obtained through one or more of the SSB serial number indication, the system frame number indication field in the Master Indication Block (MIB), the common subcarrier spacing indication field in the MIB, the half-frame indication field in the MIB, the idle bits in the MIB, the subcarrier offset indication field, and the control channel indication field, so as to achieve indicating one SSB among multiple SSBs to the terminal, that is, indicating one beam direction among multiple beam directions to the terminal.

[0087] The following uses specific embodiments to elaborate in detail on the technical solution of this application and how the technical solution of this application solves the above technical problems. These several specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0088] The technical solutions in the following embodiments can be applied to the fifth-generation (5G) communication system, and can also be applied to the fourth-generation (4G), third-generation (3G) communication systems, and can also be applied to various future new communication systems, such as the sixth-generation (6G), seventh-generation (7G), etc. The embodiments of this application are not limited thereto.

[0089] The technical solutions in the following embodiments are also applicable to different network architectures, including but not limited to non-terrestrial network architectures (Non Terrestrial Network, NTN), relay network architectures, dual-link architectures, vehicle-to-everything (V2X) architectures, device-to-device (D2D) architectures, etc.

[0090] The devices in the following embodiments include network devices and terminal devices.

[0091] The network devices in the following embodiments include base stations and base station controllers in the access network.

[0092] The base station (BS) in the following embodiments, which can also be referred to as base station equipment, is a device deployed in the radio access network (RAN) to provide wireless communication functions. For example, the devices providing base station functions in the 2G network include base transceiver stations (BTS), the devices providing base station functions in the 3G network include NodeB, the devices providing base station functions in the 4G network include evolved NodeB (eNB), in wireless local area networks (WLAN), the device providing base station functions is an access point (AP), the device providing base station functions in 5G New Radio (NR) is gNB, and the next-generation evolved NodeB (ng-eNB). Among them, NR technology is used for communication between gNB and terminals, and evolved universal terrestrial radio access (E-UTRA) technology is used for communication between ng-eNB and terminals. Both gNB and ng-eNB can be connected to the 5G core network. The base stations in the embodiments of this application also include devices providing base station functions in future new communication systems, etc.

[0093] The base station controller in the following embodiments, which can also be referred to as base station controller equipment, is a device for managing base stations, such as the base station controller (BSC) in the 2G network, the radio network controller (RNC) in the 3G network, and can also refer to the device for controlling and managing base stations in future new communication systems.

[0094] The terminals in the following embodiments, which may also be referred to as terminal devices, may refer to various forms of user equipment (UE), access terminals, user units, user stations, mobile stations (MS), remote stations, remote terminals, mobile devices, user terminals, wireless communication devices, user agents, or user devices. The terminal device may also be a cellular phone, cordless phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device, or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminal devices in future 5G networks, or terminal devices in future evolved Public Land Mobile Networks (PLMN), etc. The embodiments of the present application are not limited thereto.

[0095] Figure 3 This is a method for receiving a Synchronization Signal Block (SSB) provided by an embodiment of the present application. As Figure 3 shown, the method includes:

[0096] S301. The terminal receives the SSB sent by the network device, and the SSB includes the serial number of the SSB.

[0097] The serial number of the SSB is obtained through one or more of the following:

[0098] SSB serial number indication;

[0099] System frame number indication field in the MIB;

[0100] Common subcarrier spacing indication field in the MIB;

[0101] Half-frame indication field in the MIB;

[0102] Spare bits in the MIB;

[0103] Subcarrier offset indication field (Kssb field);

[0104] Control channel indication field (i.e., PDCCH-ConfigSIB1 field).

[0105] In the method for receiving an SSB provided in this application, a terminal receives an SSB sent by a network device. The SSB includes the serial number of the SSB, and this serial number is obtained through one or more of the following: SSB serial number indication, system frame number indication field in the Master Indication Block (MIB), common subcarrier spacing indication field in the MIB, half-frame indication field in the MIB, idle bits in the MIB, subcarrier offset indication field, and control channel indication field, so as to support more SSBs, and to indicate one SSB among multiple SSBs to the terminal, that is, to indicate one beam direction among multiple beam directions to the terminal, thereby meeting the communication requirements of terahertz.

[0106] In a possible implementation, the SSB set where the above SSB is located includes 2 m SSBs, and m is a natural number greater than or equal to 7.

[0107] The serial number of the above SSB can be represented by a binary number. In the case where the serial number of the SSB is represented by a binary number, the number of bits of the serial number of the SSB is equal to m.

[0108] 2 m SSBs each have a corresponding beam direction. For example, when m is equal to 7, 2 m SSBs have 128 beam directions.

[0109] In a possible implementation, m is equal to 7, and the above serial number is obtained through 6 bits in the SSB serial number indication and any one of the following:

[0110] 1 bit in the system frame number indication field;

[0111] 1 bit in the common subcarrier spacing indication field;

[0112] 1 bit in the half-frame indication field.

[0113] In an embodiment of this application, the 6 bits in the SSB serial number indication include 3 bits of the Demodulation Reference Signal (DMRS) in the Physical Broadcast Channel (PBCH) and 3 bits in the layer 1 payload. The layer 1 payload is the information bits in the process of generating the PBCH payload.

[0114] When m is equal to 8, the SSB set includes 256 SSBs, that is, there are 256 beam directions.

[0115] In a possible implementation, m is equal to 8, and the above serial number is obtained through 6 bits in the SSB serial number indication and any one of the following:

[0116] 1 bit in the system frame number indication field and 1 bit in the common subcarrier spacing indication field;

[0117] 1 bit in the common subcarrier spacing indication field and 1 bit in the half-frame indication field;

[0118] 1 bit in the system frame number indication field and 1 bit in the half-frame indication field.

[0119] Optionally, when the subcarrier spacing (SCS) of subsequent common information (such as system information SIB1) and SSB remains the same, 1 bit in the common subcarrier spacing indication field can be adopted.

[0120] When m is equal to 8, the positions of 256 SSBs can have the following 4 cases, including Case 11, Case 12, Case 13, and Case 14.

[0121] Case 11: In Scheme G (Case G), for 960 kHz SCS, the first symbol of the candidate SS / PBCH block (candidate SSB) has an index: {2, 9} + 14·n. Here, n is the symbol sequence number or time domain position sequence number of the SSB, and · represents the multiplication operation.

[0122] For carrier frequencies within FR2-2, in Case 11, n is a natural number greater than or equal to 0 and less than or equal to 127. That is, n = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32,... 127.

[0123] Case 12: In Scheme F (Case F), for 1920 kilohertz (kHz) SCS, the first symbol of the candidate SS / PBCH block has an index: {2, 9} + 14·n.

[0124] For carrier frequencies within FR2-2, in Case 12, n is a natural number greater than or equal to 0 and less than or equal to 127. That is, n = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32,... 127.

[0125] Scenario 13. In Scheme G, for 960 kHz SCS, the first symbol of the candidate SS / PBCH block has the index: {2, 9} + 14·n.

[0126] For carrier frequencies within FR2-2, in Scenario 13, n is a natural number greater than or equal to 0 and less than or equal to 31, and a natural number greater than or equal to 480 and less than or equal to 511. That is, n = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 480, 481... 511.

[0127] Scenario 14. In Scheme F, for 1920 kHz SCS, the first symbol of the candidate SS / PBCH block has the index: {2, 9} + 14·n.

[0128] For carrier frequencies within FR2-2, in Scenario 14, n is a natural number greater than or equal to 0 and less than or equal to 31, and a natural number greater than or equal to 960 and less than or equal to 991. That is, n = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 960, 961... 991.

[0129] In a possible implementation, m is equal to 8, and the above serial number is obtained through 6 bits in the SSB serial number indication, 1 bit in the common subcarrier spacing indication field, and 1 bit in the subcarrier offset indication field.

[0130] In a possible implementation, m is equal to 8, and the above serial number is obtained through 6 bits in the SSB serial number indication, 1 bit in the subcarrier offset indication field, and 1 bit in the idle bits.

[0131] When m is equal to 8, the SSB period can be kept unchanged at 5 ms.

[0132] In a possible implementation, m is equal to 8, and the serial number is obtained through X bits in the SSB serial number indication and Y bits in the control channel indication field;

[0133] The sum of X and Y is equal to 8, X is a natural number greater than or equal to 1 and less than or equal to 6, and Y is a natural number greater than or equal to 2 and less than or equal to 7.

[0134] For example, X equals 7 and Y equals 1, or X equals 6 and Y equals 2, or X equals 4 and Y equals 4, and so on.

[0135] In a possible implementation, m equals 9, and the sequence number is obtained through 6 bits in the SSB sequence number indication, 1 bit in the common subcarrier spacing indication field, 1 bit in the half-frame indication field, and 1 bit in the subcarrier offset indication field.

[0136] In this implementation, the SSB period can be extended to 10 ms.

[0137] In a possible implementation, m equals 9, and the sequence number is obtained through 6 bits in the SSB sequence number indication, 1 bit in the common subcarrier spacing indication field, 1 bit in the subcarrier offset indication field, and 1 bit in the idle bits.

[0138] In this implementation, the SSB period can be kept unchanged at 5 ms.

[0139] In a possible implementation, m equals 9, and the sequence number is obtained through 6 bits in the SSB sequence number indication and 3 new bits in the MIB; or,

[0140] obtained through 6 bits in the SSB sequence number indication and 3 new bits in the control channel indication field; or,

[0141] obtained through 6 bits in the SSB sequence number indication, and 3 new bits in the control channel indication field and / or 3 new bits in the broadcast channel; where the sum of N and M equals 3, N is a natural number greater than or equal to 0 and less than or equal to 3, and M is a natural number greater than or equal to 0 and less than or equal to 3. For example, N equals 1 and M equals 2, or N equals 2 and M equals 1.

[0142] Among them, the 3 new bits in the broadcast channel indicate the new indication field in the MIB, or the additional information bit positions newly added by L1 during the PBCH payload generation process.

[0143] When m equals 9, the positions of 512 SSBs can have the following 2 cases (Case 21 and Case 22).

[0144] Case 21: In Scheme G, for 960 kHz SCS, the first symbol of the candidate SS / PBCH block has an index: {2, 9} + 14·n.

[0145] For the carrier frequency within FR2-2, in case 21, n is a natural number greater than or equal to 0 and less than or equal to 255. That is, n = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, …… 255.

[0146] Case 22. In scheme F, for 1920 kHz SCS, the first symbol of the candidate SS / PBCH block has an index: {2, 9} + 14·n.

[0147] For the carrier frequency within FR2-2, in case 22, n is a natural number greater than or equal to 0 and less than or equal to 255. That is, n = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, …… 255.

[0148] Optionally, 1 bit in the subcarrier offset indication field can be the lower 1 bit in the subcarrier offset indication field, and 3 bits in the subcarrier offset indication field can be the upper 3 bits in the subcarrier offset indication field. For example, when the 4 bits in the subcarrier offset indication field are abcd, d is the lower 1 bit in the subcarrier offset indication field, and abc are the upper 3 bits in the subcarrier offset indication field.

[0149] In some embodiments, when obtaining the above serial number through 1 bit in the subcarrier offset indication field, the value indicated by 3 bits in the subcarrier offset indication field is used to indicate that the offset value between the first subcarrier of a resource block of the SSB and the first subcarrier of the common resource block is equal to 1 subcarrier, that is, 3 bits in the subcarrier offset indication field are equivalent to the offset between the synchronization signal raster (SS raster) and the channel raster being kept within 8 subcarriers (currently for FR2, the offset is kept within 12 subcarriers).

[0150] In this application, a resource block of the SSB is the first resource block of the SSB, or the resource block with the first serial number arrangement, or the resource block with the lowest serial number (if the serial number starts from 0, a resource block is the resource block with the serial number 0). The common resource block is the first common resource block that overlaps with the first resource block of the SSB. There may be 2 common resource blocks that overlap with the first resource block of the SSB. In this case, the first common resource block is selected in the order from low to high in the frequency domain, or the common resource block with a lower serial number is selected.

[0151] In some embodiments, when obtaining the above serial number through 1 bit in the subcarrier offset indication field, the value K indicated by 3 bits in the subcarrier offset indication field is used to indicate that the offset value between the first subcarrier of a resource block of the SSB and the first subcarrier of the common resource block is equal to (K·Z) subcarriers, where Z is a natural number greater than or equal to 2, and K is a natural number greater than or equal to 0 and less than or equal to 7.

[0152] In this application, the value indicated by 3 bits is the decimal number converted from the 3-bit binary number.

[0153] For example, if the 3-bit binary number is 000, the converted decimal number is 0 (i.e., K is equal to 0); if the 3-bit binary number is 001, the converted decimal number is 1 (i.e., K is equal to 1); if the 3-bit binary number is 010, the converted decimal number is 2 (i.e., K is equal to 2); if the 3-bit binary number is 011, the converted decimal number is 3 (i.e., K is equal to 3); if the 3-bit binary number is 100, the converted decimal number is 4 (i.e., K is equal to 4); if the 3-bit binary number is 101, the converted decimal number is 5 (i.e., K is equal to 5); if the 3-bit binary number is 110, the converted decimal number is 6 (i.e., K is equal to 6); if the 3-bit binary number is 111, the converted decimal number is 7 (i.e., K is equal to 7).

[0154] For example, if K is equal to 0, the offset value is equal to 0 subcarriers; if K is equal to 1, the offset value is Z subcarriers; if K is equal to 2, the offset value is equal to 2*Z subcarriers, and so on.

[0155] In the embodiments of this application, the serial number of the SSB can also be indicated by the subcarrier offset indication field and / or the control channel indication field, which can enable the system to indicate more beams, realize indicating one SSB among multiple SSBs to the terminal, that is, realize indicating one beam direction among multiple beam directions to the terminal, and match the communication requirements of terahertz.

[0156] Figure 4 It is a schematic structural diagram of a receiving device for a synchronization signal block SSB provided by an embodiment of this application. As Figure 4 shown, the receiving device 40 of the synchronization signal block SSB includes:

[0157] A receiving module 401, configured to receive the SSB sent by a network device, where the SSB includes the serial number of the SSB;

[0158] The serial number is obtained through one or more of the following:

[0159] SSB serial number indication;

[0160] The system frame number indication field in the MIB;

[0161] Common subcarrier spacing indication field in the MIB;

[0162] Half-frame indication field in the MIB;

[0163] Spare bits in the MIB;

[0164] Subcarrier offset indication field;

[0165] Control channel indication field.

[0166] The receiving device 40 of the synchronization signal block SSB provided by the embodiments of the present application can execute the technical solutions shown in the above method embodiments, and the implementation principles and beneficial effects are similar, which will not be elaborated here.

[0167] In some embodiments, the SSB set where the SSB is located includes 2 m SSBs, and m is a natural number greater than or equal to 7.

[0168] In some embodiments, m is equal to 7, and the serial number is obtained through 6 bits in the SSB serial number indication and any one of the following:

[0169] 1 bit in the system frame number indication field;

[0170] 1 bit in the common subcarrier spacing indication field;

[0171] 1 bit in the half-frame indication field.

[0172] In some embodiments, m is equal to 8, and the serial number is obtained through 6 bits in the SSB serial number indication and any one of the following:

[0173] 1 bit in the system frame number indication field and 1 bit in the common subcarrier spacing indication field;

[0174] 1 bit in the common subcarrier spacing indication field and 1 bit in the half-frame indication field;

[0175] 1 bit in the system frame number indication field and 1 bit in the half-frame indication field.

[0176] In some embodiments, m is equal to 8, and the serial number is obtained through 6 bits in the SSB serial number indication, 1 bit in the common subcarrier spacing indication field, and 1 bit in the subcarrier offset indication field.

[0177] In some embodiments, m is equal to 8, and the serial number is obtained through 6 bits in the SSB serial number indication, 1 bit in the subcarrier offset indication field, and 1 bit in the spare bits.

[0178] In some embodiments, m is equal to 8, and the serial number is obtained through X bits in the SSB serial number indication and Y bits in the control channel indication field; the sum of X and Y is equal to 8, X is a natural number greater than or equal to 1 and less than or equal to 6, and Y is a natural number greater than or equal to 2 and less than or equal to 7.

[0179] In some embodiments, m is equal to 9, and the serial number is obtained through 6 bits in the SSB serial number indication, 1 bit in the common subcarrier spacing indication field, 1 bit in the half-frame indication field, and 1 bit in the subcarrier offset indication field.

[0180] In some embodiments, m is equal to 9, and the serial number is obtained through 6 bits in the SSB serial number indication, 1 bit in the common subcarrier spacing indication field, 1 bit in the subcarrier offset indication field, and 1 bit in the idle bits.

[0181] In some embodiments, m is equal to 9, and the serial number is obtained through 6 bits in the SSB serial number indication and the additional 3 bits in the MIB; or,

[0182] obtained through 6 bits in the SSB serial number indication and the additional 3 bits in the control channel indication field; or,

[0183] obtained through 6 bits in the SSB serial number indication, and the additional N bits in the control channel indication field and / or the additional M bits in the broadcast channel; where the sum of N and M is equal to 3, N is a natural number greater than or equal to 0 and less than or equal to 3, and M is a natural number greater than or equal to 0 and less than or equal to 3.

[0184] In some embodiments, the value indicated by 3 bits in the subcarrier offset indication field is used to indicate that the offset value of the first subcarrier of a resource block of the SSB from the first subcarrier of the common resource block is equal to 1 subcarrier.

[0185] In some embodiments, the value K indicated by 3 bits in the subcarrier offset indication field is used to indicate that the offset value of the first subcarrier of a resource block of the SSB from the first subcarrier of the common resource block is equal to (K·Z) subcarriers; where K is a natural number greater than or equal to 0 and less than or equal to 7, Z is a natural number greater than or equal to 2, and · represents a multiplication operation.

[0186] The receiving device 40 of the synchronization signal block SSB provided by the embodiments of the present application can execute the technical solutions shown in the above method embodiments, and its implementation principle and beneficial effects are similar, which will not be elaborated here.

[0187] Figure 5 It is a schematic structural diagram of the communication device provided by the embodiments of the present application. As Figure 5As shown, the communication device 50 may include: a memory 501, a processor 502, and a transceiver 503. The transceiver 503 may include: a transmitter and / or a receiver. The transmitter may also be referred to as a sender, a transmitter, a transmission port, or a transmission interface, etc. with similar descriptions, and the receiver may also be referred to as a receiver, a receiving port, or a receiving interface, etc. with similar descriptions. Exemplarily, the memory 501, the processor 502, and the transceiver 503 are interconnected with each other through a bus 504.

[0188] The memory 501 is used to store program instructions.

[0189] The processor 502 is used to execute the program instructions stored in the memory, so as to enable the communication device 50 to execute the above method.

[0190] All or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a readable memory. When the program is executed, it executes the steps including the above method embodiments; and the foregoing memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid-state drive, magnetic tape, floppy disk, optical disc, and any combination thereof.

[0191] The embodiments of the present application provide a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, they are used to implement the method of the above method embodiments.

[0192] The embodiments of the present application also provide a computer program product, including a computer program, and when the computer program is executed by a processor, it can implement the method shown in the above method embodiments.

[0193] The embodiments of the present application provide a chip, on which a computer program is stored, and when the computer program is executed by the chip, it implements the method shown in the above method embodiments.

[0194] The embodiments of the present application provide a chip module, on which a computer program is stored, and when the computer program is executed by the chip module, it implements the method shown in the above method embodiments.

[0195] These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured product including an instruction device, and the instruction device implements in the process Figure 1 one process or multiple processes and / or blocks Figure 1 the functions specified in one block or multiple blocks.

[0196] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus, so that a series of operation steps are executed on the computer or other programmable apparatus to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable apparatus provide steps for realizing the functions specified in one process or multiple processes and / or one block or multiple blocks. Figure 1 one process or multiple processes and / or Figure 1 blocks, or steps for realizing the functions specified in multiple blocks.

[0197] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these changes and modifications.

[0198] In the present application, the term "comprising" and its variations may mean non-restrictive inclusion; the term "or" and its variations may mean "and / or". The term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article or apparatus comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or apparatus. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising the element.

[0199] In the present application, terms such as "first", "second", etc. are used to distinguish similar objects and do not necessarily describe a specific order or sequence. In the present application, "a plurality of" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

Claims

1. A method for receiving a Synchronization Signal Block (SSB), characterized in that, Applied to a terminal, the method includes: Receiving an SSB sent by a network device, where the SSB includes the serial number of the SSB; The serial number is obtained through one or more of the following: SSB serial number indication; System frame number indication field in the master information block MIB; Common subcarrier spacing indication field in the MIB; Half-frame indication field in the MIB; Idle bits in the MIB; Subcarrier offset indication field; Control channel indication field.

2. The method according to claim 1, wherein The SSB set where the SSB is located includes 2 m SSBs, and m is a natural number greater than or equal to 7.

3. The method according to claim 2, characterized in that, When m is equal to 7, the serial number is obtained through 6 bits in the SSB serial number indication and any one of the following: 1 bit in the system frame number indication field; 1 bit in the common subcarrier spacing indication field; 1 bit in the half-frame indication field.

4. The method according to claim 2, characterized in that When m is equal to 8, the serial number is obtained through 6 bits in the SSB serial number indication and any one of the following: 1 bit in the system frame number indication field and 1 bit in the common subcarrier spacing indication field; 1 bit in the common subcarrier spacing indication field and 1 bit in the half-frame indication field; 1 bit in the system frame number indication field and 1 bit in the half-frame indication field.

5. The method according to claim 2, wherein When m is equal to 8, the serial number is obtained through 6 bits in the SSB serial number indication, 1 bit in the common subcarrier spacing indication field, and 1 bit in the subcarrier offset indication field.

6. The method according to claim 2, characterized in that, When m is equal to 8, the serial number is obtained through 6 bits in the SSB serial number indication, 1 bit in the subcarrier offset indication field, and 1 bit in the idle bits.

7. The method according to claim 2, wherein When m is equal to 8, the serial number is obtained through X bits in the SSB serial number indication and Y bits in the control channel indication field; where the sum of X and Y is equal to 8, X is a natural number greater than or equal to 1 and less than or equal to 6, and Y is a natural number greater than or equal to 2 and less than or equal to 7.

8. The method according to claim 2, wherein When m is equal to 9, the serial number is obtained through 6 bits in the SSB serial number indication, 1 bit in the common subcarrier spacing indication field, 1 bit in the half-frame indication field, and 1 bit in the subcarrier offset indication field.

9. The method according to claim 2, wherein When m is equal to 9, the serial number is obtained through 6 bits in the SSB serial number indication, 1 bit in the common subcarrier spacing indication field, 1 bit in the subcarrier offset indication field, and 1 bit in the idle bits.

10. The method according to claim 2, wherein When m is equal to 9, the serial number is obtained through 6 bits in the SSB serial number indication and 3 new bits in the MIB; or, Through 6 bits in the SSB serial number indication and 3 new bits in the control channel indication field; or, Through 6 bits in the SSB serial number indication, and N new bits in the control channel indication field and / or M new bits in the broadcast channel; where the sum of N and M is equal to 3, N is a natural number greater than or equal to 0 and less than or equal to 3, and M is a natural number greater than or equal to 0 and less than or equal to 3.

11. The method according to any one of claims 5 to 6 or 8 to 10, characterized in that, The value indicated by 3 bits in the subcarrier offset indication field is used to indicate that the offset value of the first subcarrier of a resource block of the SSB from the first subcarrier of the common resource block is equal to 1 subcarrier.

12. The method according to any one of claims 5 to 6 or 8 to 10, characterized in that, The numerical value K indicated by the 3-bit in the subcarrier offset indication field is used to indicate that the offset value between the first subcarrier of a resource block of the SSB and the first subcarrier of the common resource block is equal to (K·Z) subcarriers; where K is a natural number greater than or equal to 0 and less than or equal to 7, Z is a natural number greater than or equal to 2, and · represents a multiplication operation.

13. A receiving device for a Synchronization Signal Block (SSB), characterized in that, Applied to a terminal, the apparatus includes: A receiving module, configured to receive an SSB sent by a network device, where the SSB includes the serial number of the SSB; The serial number is obtained through one or more of the following: SSB serial number indication; The system frame number indication field in the master information block MIB; The common subcarrier spacing indication field in the MIB; The half-frame indication field in the MIB; The spare bits in the MIB; The subcarrier offset indication field; The control channel indication field.

14. A communication device, characterized in that, Including: A memory and a processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor executes the method according to any one of claims 1 to 12.

15. A computer-readable storage medium, characterized in that, Computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, they are used to implement the method according to any one of claims 1 to 12.

16. A computer program product, characterized in that, Including a computer program, which when executed by a processor implements the method according to any one of claims 1 to 12.

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