METHOD FOR TRANSMITTING SYNCHRONIZATION BLOCK / PHYSICAL TRANSMISSION CHANNEL AND APPARATUS

Abstract

This application provides a method for transmitting an SS / PBCH block to a device. The method includes: a terminal device receives an SS / PBCH block within a burst of SS / PBCH blocks and then obtains indication information based on one SS / PBCH block. This indication information can be used to indicate candidate indices of at least one SS / PBCH block within the burst, and the number of candidate indices is greater than 64. For example, the number of candidate indices can be 128, 160, 180, 196, 240, or similar. A network device may not be limited to 64 candidate indices. In other words, the number of candidate positions used to send the SS / PBCH block is not limited to 64. Therefore, the network device can send a larger number of SS / PBCH blocks to the terminal device.

Description

METHOD FOR TRANSMITTING SYNCHRONIZATION BLOCK / PHYSICAL TRANSMISSION CHANNEL AND DEVICE CROSS REFERENCE TO RELATED REQUESTS This application claims the priority of Chinese Patent Application No. 202010292119.6, filed with the National Intellectual Property Administration of China on April 14, 2020 and titled METHOD OF TRANSMITTING SYNCHRONIZATION BLOCK / PHYSICAL TRANSMISSION CHANNEL AND APPARATUS, this application claims the priority of Chinese Patent Application No. 202011106045.9, filed with the National Intellectual Property Administration of China on October 15, 2020 and titled METHOD OF TRANSMITTING SYNCHRONIZATION BLOCK / PHYSICAL TRANSMISSION CHANNEL AND APPARATUS, and this application claims priority of Chinese Patent Application No. 202110169543.6, filed with the National Intellectual Property Administration of China on February 7, 2021 and titled METHOD FOR TRANSMITTING SYNCHRONIZATION BLOCK / PHYSICAL TRANSMISSION CHANNEL AND APPARATUS, which are incorporated herein by reference in its whole. FIELD OF THE INVENTION This application relates to the field of wireless communication network technologies and, in particular, to a method of transmitting a synchronization block / physical transmission channel (synchronization block / physical transmission channel, SS / PBCH block) and a device. BACKGROUND OF THE INVENTION A new radio (new radio, NR) system can be divided into two parts according to the frequency band location: a FR 1 (frequency range 1) and a FR 2. The FR 1 mainly refers to a spectrum below 6 GHz, and FR 2 refers primarily to spectrum from 6 GHz to 52.6 GHz. For example, subcarrier separations (subcarrier separation, SCS) that may be supported by a frequency band in the FR 1 are 15 kHz and 30 kHz, and the SCSs that may be compatible with a frequency band in FR 2 are 60 kHz, 120 kHz and 240 kHz or wider subcarrier spacing. A synchronization transmission information block pattern (synchronization signal block pattern, SS / PBCH block pattern) varies with different SCS. An SS / PBCH block is information first demodulated by a terminal device in an initial access process. The SS / PBCH block may mainly include a primary synchronization signal (Primary Synchronization Signal, PSS), a secondary synchronization signal (Secondary Synchronization Signal, SSS) and a physical transmission channel (Physical Transmission Channel, PBCH) . The terminal device may complete cell synchronization and coarse symbol level timing synchronization by demodulating the PSS and SSS. The PBCH may carry main information block (MIB) information configured at a higher layer. The terminal device demodulates the MIB information to complete system frame-level timing synchronization and obtain position information of a system information block 1 / minimum remaining system information (system information block / minimum remaining system information , SIB1 / RMSI). In addition, the terminal device can obtain a type 0 physical downlink control channel (type 0 physical downlink control channel, type 0-PDCCH) and a physical downlink shared channel (physical downlink shared channel , PDSCH) using information in the SIB1 / RMSI. As technologies evolve, the available frequency bands continue to grow. Therefore, it is urgent to solve how to transmit an SS / PBCH block. BRIEF DESCRIPTION OF THE INVENTION This application provides a method for transmitting an SS / PBCH block and an apparatus for solving a problem of a number of candidate indices in the transmission of a burst set of SS / PBCH blocks and a problem of whether there are enough slots to transmit the SS / PBCH block burst set. According to a first aspect, this application provides a method for transmitting an SS / PBCH block. The method includes: a terminal device receives an SS / PBCH block; and obtains indication information based on an SS / PBCH block. The indication information is used to indicate candidate indexes of at least one SS / PBCH block in an SS / PBCH block burst set, a number of candidate indexes is greater than 64, and the SS block burst set / PBCH is a set in which the previous SS / PBCH block is located. In the technical solution provided in this application, the indication information may not only indicate candidate indexes of at least one SS / PBCH block in the burst set of SS / PBCH blocks, but may also indicate more candidate indexes, e.g. For example, indicate 128 or more candidate indexes. Additionally, a network device can send more SS / PBCH blocks without being limited by 64 candidate indices (i.e., without being limited by 64 candidate positions). The terminal device may learn, using the indication information, a range of a maximum number of SS / PBCH blocks sent by the network device. In a possible implementation, the method further includes: the terminal device receives the set of SS / PBCH block bursts. According to a second aspect, this application provides a method for transmitting an SS / PBCH block. The method further includes: a terminal device receives configuration information. The configuration information includes a length of a discovery burst transmission window, the length of the discovery burst transmission window is greater than 5 ms, and the terminal device uses the discovery burst transmission window to receive one or more SS / PBCH block burst sets. In the technical solution provided in this application, a network device can have more slots to send one or more SS / PBCH blocks. Additionally, the terminal device needs to receive the SS / PBCH block in the DRS window. Therefore, with the increase of the DRS window length, the terminal device is enabled to receive more SS / PBCH blocks in the DRS window. Optionally, the method further includes: the terminal device receives an SS / PBCH block; and obtains indication information based on an SS / PBCH block. The indication information is used to indicate candidate indexes of at least one SS / PBCH block in an SS / PBCH block burst set, a number of candidate indexes is greater than 64, and the SS block burst set / PBCH is a set in which the previous SS / PBCH block is located. Referring to the methods provided in the first aspect and the second aspect, the terminal device does not need to learn a specific position of the SS / PBCH block burst set using 1 bit a¿+4 information, so the information of indication can indicate more candidate indexes. In addition, even if the network device needs to transmit more SS / PBCH blocks, it can be guaranteed that the indication information can indicate more candidate indexes, and it can also be guaranteed that the network device has enough remaining slots to send one or more SS / PBCH blocks that are not sent on time. According to a third aspect, this application provides a communication apparatus, configured to carry out the method in the first aspect or any possible implementation of the first aspect. Specifically, the communication apparatus includes a corresponding unit for carrying out the method in the first aspect or any possible implementation of the first aspect. For example, the communication apparatus may include a transceiver unit and a processing unit. According to a fourth aspect, this application provides a communication apparatus, configured to carry out the method in the second aspect or any possible implementation of the second aspect. Specifically, the communication apparatus includes a corresponding unit for carrying out the method in the second aspect or μλ / t / zuzz / utmuy or any possible implementation of the second aspect. For example, the communication apparatus may include a transceiver unit and a processing unit. For example, the processing unit may be configured to control the transceiver unit to receive configuration information. According to a fifth aspect, this application provides a communication apparatus. The communication apparatus includes a processor, configured to execute a program stored in a memory. When the program is executed, the communication apparatus is enabled to carry out the method described in the first aspect or any possible implementation of the first aspect. In one possible implementation, the memory is located outside the communication device. According to a sixth aspect, this application provides a communication apparatus. The communication apparatus includes a processor, configured to execute a program stored in a memory. When the program is executed, the communication apparatus is enabled to carry out the method described in the second aspect or any possible implementation of the second aspect. In one possible implementation, the memory is located outside the communication device. According to a seventh aspect, this application provides a communication apparatus. The communication apparatus includes a processor, a memory, and a program that is stored in the memory and executable on the processor. When the program is executed, the communication apparatus is enabled to carry out the method described in the first aspect or any possible implementation of the first aspect. According to an eighth aspect, this application provides a communication apparatus. The communication apparatus includes a processor, a memory, and a program that is stored in the memory and executable on the processor. When the program is executed, the communication apparatus is enabled to carry out the method described in the second aspect or any possible implementation of the second aspect. According to a ninth aspect, this application provides a communication apparatus. The communication apparatus includes a processor, a memory and a transceiver. The transceiver is configured to receive a signal or send a signal. The memory is configured to store computer code. The processor is configured to execute the computer code, such that the communication apparatus carries out the method described in the first aspect or any possible implementation of the first aspect. According to a tenth aspect, this application provides a communication apparatus. The communication apparatus includes a processor, a memory and a transceiver. The transceiver is configured to receive a signal or send a signal. The μλ / t / zuzz / utmuyo memory is configured to store computer code. The processor is configured to execute the computer code, such that the communication apparatus carries out the method described in the second aspect or any possible implementation of the second aspect. According to an eleventh aspect, this application provides a communication apparatus. The communication apparatus includes a processing circuit and an interface circuit. The interface circuit is configured to obtain a block from SS / PBCH. The processing circuit is configured to obtain indication information based on an SS / PBCH block. The indication information is used to indicate candidate indexes of at least one SS / PBCH block in an SS / PBCH block burst set, a number of candidate indexes is greater than 64, and the SS block burst set / PBCH is a set in which the previous SS / PBCH block is located. In a possible implementation, the interface circuit is further configured to obtain the burst set of SS / PBCH blocks. According to a twelfth aspect, this application provides a communication apparatus. The communication apparatus includes a processing circuit and an interface circuit. The interface circuit is configured to obtain configuration information. The configuration information includes a length of a discovery burst transmission window, the length of the discovery burst transmission window is greater than 5 ms, and a terminal device uses the discovery burst transmission window to receive one or more SS / PBCH block burst sets. Optionally, the interface circuit is further configured to obtain an SS / PBCH block. The processing circuit is further configured to obtain indication information based on the SS / PBCH block. According to a thirteenth aspect, this application provides a communication apparatus. The communication apparatus includes a processing unit and a transceiver unit. The transceiver unit is configured to send and receive signals. The processing unit is configured to send a set of SS / PBCH block bursts to a terminal device using the transceiver unit. One or more SS / PBCH blocks in the SS / PBCH block burst set include indication information. The indication information is used to indicate candidate indexes of at least one SS / PBCH block in the burst set of SS / PBCH blocks, and a number of candidate indexes is greater than 64. Optionally, an SS / PBCH block in the SS / PBCH block burst set may include the indication information. Alternatively, a plurality of SS / PBCH blocks in the SS / PBCH block burst set may include the μλ / t / zuzz / utmuyo indication information. Alternatively, each SS / PBCH block in the SS / PBCH block burst set may include the indication information. In a possible implementation, the processing unit is further configured to send configuration information to the terminal device using the transceiver unit. The configuration information includes a length of a discovery burst transmission window, the length of the discovery burst transmission window is greater than 5 ms, and the terminal device uses the discovery burst transmission window to receive one or more SS / PBCH block burst sets. According to a fourteenth aspect, this application provides a communication apparatus. The communication apparatus includes a processor, a memory and a transceiver. The transceiver is configured to receive a signal or send a signal. The memory is configured to store computer code. The processor is configured to execute computer code to control the transceiver to send a set of SS / PBCH block bursts to a terminal device. In a possible implementation, the processor is further configured to control the transceiver to send configuration information to the terminal device. The configuration information includes a length of a discovery burst transmission window, the length of the discovery burst transmission window is greater than 5 ms, and the terminal device uses the discovery burst transmission window to receive one or more SS / PBCH block burst sets. Referring to the first aspect to the fourteenth aspect, in a possible implementation, the indication information includes information used to indicate a demodulation reference signal DMRS sequence and information about the PBCH payload. The DMRS sequence occupies 3 bits and the PBCH payload occupies 4 bits. Referring to the first aspect to the fourteenth aspect, in a possible implementation, the number of the candidate indices is greater than or equal to 128. Referring to the first aspect to the fourteenth aspect, in a possible implementation, at least two of the plurality of SS / PBCH block burst sets occupy different slots, and SS / PBCH block positions in at least two SS / PBCH block burst sets. SS / PBCH blocks are the same; at least two of the plurality of SS / PBCH block burst sets occupy different slots, and the positions of the SS / PBCH blocks in the at least two SS / PBCH block burst sets are different; or at least two of the plurality of SS / PBCH block burst sets include different numbers of SS / PBCH blocks. With reference to the first aspect to the fourteenth aspect, in a possible implementation, when at least two of the plurality of ma / t / zuzz / utmuyo block burst sets SS / PBCH occupy different slots, and the positions of SS / PBCH blocks in at least two SS / PBCH block burst sets are equal, the SS / PBCH block burst set sent by a network device to the terminal device is determined by the network device based on a listen before talking, LBT, result. Referring to the first aspect to the fourteenth aspect, in a possible implementation, the configuration information further includes a discovery burst transmission window period, and the discovery burst transmission window period is different from a set periodicity. SS / PBCH block bursts. With reference to the first aspect to the fourteenth aspect, in a possible implementation, a time domain position occupied by an SS / PBCH block in the burst set of SS / PBCH blocks meets the following conditions: a starting symbol of an SS / PBCH block in the SS / PBCH block burst set is any even symbol between the first symbol and the eleventh symbol in an interval configured by the network device; and / or the start symbols of two adjacent SS / PBCH blocks in the SS / PBCH block burst set are separated by any one or more of 3, 5, 7 or 9 symbols. With reference to the first aspect to the fourteenth aspect, in a possible implementation, the SS / PBCH block and a physical downlink shared channel PDSCH associated with the SS / PBCH block meet the following conditions: the PDSCH occupies a symbol length of 1 or 3; and / or a PDSCH start symbol is the second symbol or the fourth symbol of four symbols occupied by an SS / PBCH block. According to a fifteenth aspect, this application provides a readable storage medium characterized in that. The computer-readable storage medium is configured to store a computer program. When the computer program is executed on a computer, the method described in the first aspect or any possible implementation of the first aspect is carried out. According to a sixteenth aspect, this application provides a computer readable storage medium. The computer-readable storage medium is configured to store a computer program. When the computer program is executed on a computer, the method described in the second aspect or any possible implementation of the second aspect is carried out. According to a seventeenth aspect, this application provides a computer program product. The computer program product includes a computer program or computer code. When the computer program or computer code is executed on a computer, the method described in the first aspect or any possible implementation of the first aspect is carried out. According to an eighteenth aspect, this application provides a computer program product. The computer program product includes a computer program or computer code. When the computer program or computer code is executed on a computer, the method described in the second aspect or any possible implementation of the second aspect is carried out. According to a nineteenth aspect, this application provides a computer program. When the computer program is executed on a computer, the method described in the first aspect or any possible implementation of the first aspect is carried out. According to a twentieth aspect, this application provides a computer program. When the computer program is executed on a computer, the method described in the second aspect or any possible implementation of the second aspect is carried out. According to a twenty-first aspect, this application provides a communication apparatus, configured to carry out the method described in the first aspect or any possible implementation of the first aspect or the method described in the second aspect or any possible implementation of the second aspect . According to a twenty-second aspect, this application provides a wireless communication system. The wireless communication system includes a network device and a terminal device. The network device is configured to send a set of SS / PBCH block bursts; or the network device is configured to send the above configuration information. The terminal device is configured to carry out the method described in the first aspect or any possible implementation of the first aspect or the method described in the second aspect or any possible implementation of the second aspect. The indication information in the embodiments of this application may be used to indicate 128, 256, 512, 1024 or 2048 candidate indices. It can be understood that the number of candidate indices indicated by the indication information in the embodiments of this application is simply an example, and the number of candidate indices may be another value or the like. The details are not described here again. That is, the corresponding number of candidate indices can be indicated using the information used to indicate the DMRS sequence and the information about the PBCH payload. ma / t / zuzz / utmuyo BRIEF DESCRIPTION OF THE DRAWINGS FIGURE 1 is a schematic diagram of an architecture of a communication system according to an embodiment of this application. FIGURE 2 is a schematic diagram of an SS / PBCH block burst set pattern in case the subcarrier spacing is 15 kHz according to an embodiment of this application. FIGURE 3 is a schematic diagram of an SS / PBCH block burst set pattern in case the subcarrier spacing is 120 kHz according to an embodiment of this application. FIGURE 4 is a schematic diagram of a method for transmitting an SS / PBCH block according to an embodiment of this application. FIGURE 5A is a schematic diagram of an SS / PBCH block burst set pattern in case the subcarrier spacing is 120 kHz according to an embodiment of this application. FIGURE 5B is a schematic diagram of an SS / PBCH block burst set pattern in case the subcarrier spacing is 120 kHz according to an embodiment of this application. FIGURE 6 is a schematic diagram of a method for transmitting an SS / PBCH block according to an embodiment of this application. FIGURE 7A is a schematic diagram of a relationship between a DRS window and a burst set of SS / PBCH blocks according to an embodiment of this application. FIGURE 7B is a schematic diagram of the relationships between a DRS window and a plurality of SS / PBCH block burst sets according to an embodiment of this application. FIGURE 7C is a schematic diagram of a relationship between a plurality of SS / PBCH block burst sets according to an embodiment of this application. FIGURE 7D is a schematic diagram of a relationship between a plurality of SS / PBCH block burst sets according to an embodiment of this application. FIGURE 7E is a schematic diagram of a relationship between a plurality of SS / PBCH block burst sets according to an embodiment of this application. FIGURE 8 is a schematic diagram of a relationship between a DRS window and a burst set of SS / PBCH blocks according to an embodiment of this application. FIGURE 9A is a schematic diagram of an SS / PBCH block burst set pattern in case the subcarrier spacing is 120 kHz. ΜΛ / t / zuzz / utvery agree with one modality of this request. FIGURE 9B is a schematic diagram of an SS / PBCH block burst set pattern in case a subcarrier spacing is 120 kHz according to an embodiment of this application. ma / t / zuzz / utmuyo FIGURE 9C is a schematic diagram of an SS / PBCH block burst set pattern in case a subcarrier spacing is 120 kHz according to an embodiment of this application. FIGURE 10A is a schematic diagram of a relationship between an SS / PBCH block and a PDSCH according to an embodiment of this application. FIGURE 10B is a schematic diagram of a relationship between a block of SS / PBCH and a PDSCH in accordance with an embodiment of this application. FIGURE 10C is a schematic diagram of a relationship between a block of SS / PBCH and a PDSCH in accordance with an embodiment of this application. FIGURE 11 is a schematic diagram of a structure of a communication apparatus according to an embodiment of this application. FIGURE 12 is a schematic diagram of a structure of a communication apparatus according to an embodiment of this application. FIGURE 13 is a schematic diagram of a circuitry structure according to an embodiment of this application. DETAILED DESCRIPTION OF THE INVENTION To make the objectives, technical solutions and advantages of this application clearer, this application is further described below with reference to the accompanying drawings. In the specification, the claims and the drawings accompanying this application, the terms first, second, etc. They are only intended to distinguish between different objects but do not indicate a particular order. Furthermore, the terms including and having and any other variants thereof are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes a non-listed step or unit, or optionally includes also another step or unit inherent to the process, method, product or device. Modality mentioned in this specification means that a particular function, structure or feature described with reference to the modality may be included in at least one modality of this application. The phrase shown in various places in the specification may not necessarily refer to the same modality, and is not an independent or optional modality exclusive of another modality. One skilled in the art may understand explicitly and implicitly that the modalities described in the specification may be combined with another modality. In this application, at least one (element) refers to one or more, a plurality of refers to two or more, and at least two (elements) refers to two, three or more. And / or is used to describe an association relationship between associated objects and indicates that three types of relationships can exist. For example, A and / or B can represent the following three cases: only A exists, both A and B exist, and only B exists. A and B can be singular or plural. The character 7 usually indicates a relationship between the associated object. At least one of the following elements or a similar expression means any combination of these elements. For example, at least one of a, b or c can represent: a, b, c, a and b, a and c, ”b and c or a, b and c”. A network architecture in this application is described in detail below. The technical solutions provided in this application can be applied to various communication systems, for example, a long-term evolution system (Long Term Evolution, LTE), a frequency division duplex system LTE (frequency division duplex, FDD), a time division duplex system LTE (time division duplex, TDD), a universal mobile telecommunications system (Universal Mobile Telecommunications System, UMTS), a globally interoperable communication system for microwave access (interoperability for microwave access, WiMAX), a fifth generation communication system (fifth generation, 5G) communication system or a new radio system (new radio, NR), and other future communication systems such as a 6G system. Optionally, the technical solutions provided in this application can be applied to an Internet of Things system (Internet of Things, LoT), a Narrowband Internet of Things system (Narrowband Internet of Things, NB- loT) and the like. FIGURE 1 is a schematic diagram of an architecture of a communication system according to this application. As shown in FIGURE 1, the communication system includes one or more network devices (only one network device is used as an example in FIGURE 1) and one or more terminal devices (only two terminal devices are used as an example in FIGURE 1) connected to the network device. The network device may be a device that can communicate with the terminal devices. The network device can be any device that has a wireless transceiver function. The network device may be a base station, an access point or a transmission reception point (transmission reception point, TRP), or it may be a device, in an access network, that communicates with a terminal device through an air interface using one or more sectors (cells), or the like. This is not limited in this application. For example, the base station may be a ma / t / zuzz / utmuyo evolved NodeB (evolutionary Node B, eNB or eNodeB) in LTE, a repeater station or an access point, or it may be a next generation NodeB (next generation , gNB) in a 5G network, or similar. It can be understood that, the base station may alternatively be a base station in a future evolved public land mobile network (public land mobile network, PLMN) or the like. Optionally, the network device may alternatively be an access node, a wireless relay node, a wireless backhaul node or the like in a wireless local area network system (wireless fidelity, Wi-F). Optionally, the network device may alternatively be a wireless controller in a cloud radio access network (cloud radio access network, BIG) scenario. For ease of description, the following uses a base station as an example to describe the network device and the like in this application. Optionally, in some implementations of the base station, the base station may include a centralized unit (centralized unit, CU), a distributed unit (distributed unit, DU), and the like. In some other implementations of the base station, the CU may be further divided into a CU control plane (control plane, CP), a CU user plane (user plan, UP), and the like. In some other implementations of the base station, the base station may alternatively be an open radio access network architecture (ORAN) or the like. A specific deployment form of the base station is not limited in this application. The terminal device may also be called user equipment (user equipment, UE). The terminal device in this application may be a device that has a wireless transceiver function, and may carry out communication with one or more devices of the core network (core network, CN) (or so-called core devices) by using an access network device (or referred to as an access device) in a radio access network (radio access network, RAN). Optionally, the terminal device may also be called an access terminal, terminal, subscriber unit, subscriber station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless network device, a user agent, an apparatus user or similar. Optionally, the terminal device may be deployed on the ground, including an indoor or outdoor stage and a portable or vehicle-mounted stage; or can be deployed on a water surface (for example, a steamboat); or it can be deployed in the air (for example, on an airplane, balloon, or satellite). Optionally, the terminal device may be a portable device having a wireless communication function, a vehicle-mounted device, a wearable device, a terminal in an Internet of Things or a μλ / t / zuzz / utmuyo Internet of vehicles, a terminal of any form on a 5G network or a future network, or similar. This is not limited in this application. Optionally, in the communication system shown in FIGURE 1, the terminal devices can communicate with each other by using a device-to-device technology (device-to-device, D2D), a vehicle-to-everything technology (vehicle-to-everything, V2X ), a machine-to-machine technology (machine-to-machine, M2M), or similar. A method for communication between terminal devices is not limited in this application. In the communication system shown in FIGURE 1, the network device and a terminal device 1 can be configured to carry out a method provided in the embodiments of this application; and the network device and a terminal device 2 may also be configured to carry out the method provided in the embodiments of this application. Some background to this application is described in detail below. Synchronization block (physical transmission channel (synchronization / physical transmission channel, SS / PBCH): includes at least one primary synchronization signal (primary synchronization signal, PSS), one secondary synchronization signal (synchronization signal secondary, SSS), and a physical transmission channel (physical transmission channel, PBCH). For example, the SS / PBCH block can occupy 4 orthogonal frequency division multiplexing (OFDM) symbols in the time domain, and can occupy 20 resource blocks (Resource Blocks, RB) in the frequency domain. It can be understood that the SS / PBCH block described above may also be called a synchronization signal block (synchronization signal block, SSB) or the like. A name thereof is not limited in this application. In a specific implementation, the network device may send a plurality of SS / PBCH blocks in a time division multiplexing (time division multiplexing, TDM) mode. Optionally, the network device may send the plurality of SS / PBCH blocks in the form of an SS / PBCH block burst set (SS / PBCH block burst set). Furthermore, the network device may configure a periodicity of SS / PBCH block burst sets, and send the SS / PBCH block burst set according to the specific periodicity. Within the periodicity of the SS / PBCH block burst set, a number of SS / PBCH blocks in the SS / PBCH block burst set may be related to a frequency band and / or a subcarrier spacing ( subcarrier separation, SCS). The frequency band can be understood as a frequency band (or so-called spectrum) in which the network device and / or the terminal device is located, and the separation of ma / t / zuzz / utmuyo subcarriers can be understood as a separation of subcarriers used by the network device and / or the terminal device. Typically, a frequency band in which the network device is located is the same as that in which the terminal device is located, and the subcarrier spacing used by the network device is the same as that used by the terminal device. In this application, the frequency band may include a low frequency band and a high frequency band (for example, a spectrum from 52.6 GHz to 71 GHz). In some scenarios, the frequency band may be a licensed frequency band. In some other scenarios, the frequency band may be an unlicensed frequency band or similar. This is not limited in the terms of this application. An unlicensed frequency band can also be understood as a shared frequency band. Optionally, the number of SS / PBCH blocks in the SS / PBCH block burst set may be related to the frequency band in which the network device and / or the terminal device operates. For example, when the frequency band f is less than or equal to 3 GHz, the maximum number of SS / PBCH blocks in the SS / PBCH block burst set may be 4 and the minimum number thereof may be 1 ; or when the frequency band f is greater than 3 GHz and less than or equal to 6 GHz, the maximum number of SS / PBCH blocks in the SS / PBCH block burst set may be 8 and the minimum number thereof can be 1; or when the frequency band f is greater than 6 GHz, the maximum number of SS / PBCH blocks in the SS / PBCH block burst set may be 64, and the minimum number thereof may be 1. Optionally, the number of SS / PBCH blocks in the SS / PBCH block burst set may further relate to the subcarrier spacing used by the network device and / or the terminal device. For example, for different subcarrier spacings, the number of SS / PBCH blocks in the SS / PBCH block burst set may be as follows: For example, when the SCS is 15 kHz, and the duration of the burst set of SS / PBCH blocks sent by the network device is 5 ms, a start symbol expression of the SS / PBCH blocks is {2, 8} + 14n, and n is equal to 0, 1,2, 3 or 4. and 8 respectively represent the start symbols of the SS / PBCH blocks in an interval; and n represents a candidate slot occupied by the SS / PBCH block burst set, and n being equal to 0, 1, 2, 3, or 4 represents that the SS / PBCH block burst set can occupy 5 slots ( interval). Because a slot includes 14 OFDM symbols, 14 can represent that the SS / PBCH blocks are repeated in one slot unit. In other words, a pattern (which can also be understood as a position distribution) of the set of μλ / t / zuzz / utmuyo bursts of SS / PBCH blocks is repeated in one unit of an interval. Alternatively, at different intervals, the relative positions of the SS / PBCH blocks in the SS / PBCH block burst set pattern are the same. This can also be understood as follows: in different SS / PBCH block burst sets, SS / PBCH blocks with the same relative position have the same offset with respect to the starting positions of the block burst sets. of SS / PBCH in which the SS / PBCH blocks are respectively located. A value of n is obtained relative to the duration of the SS / PBCH block burst set. As described above, the duration of the SS / PBCH block burst set is 5 ms, and one interval is 1 ms. In this case, n can have five values. As shown in FIGURE 2, when the SCS is 15 kHz, an interval is 1 ms, and the length of the SS / PBCH block burst set is 5 ms, the candidate intervals of the SS / PBCH block burst set SS / PBCH are 5 intervals. Interval 0 (i.e., an interval corresponding to n that is equal to 0) in FIGURE 2 includes two SS / PBCH blocks. A start symbol of one SS / PBCH block is symbol 2, and a start symbol of the other SS / PBCH block is symbol 8. Interval 1 (i.e., an interval corresponding to n that is equal to 1) includes two SS / PBCH blocks. A starting symbol of one SS / PBCH block is symbol 2, and a starting symbol of the other SS / PBCH block is symbol 8. A pattern of SS / PBCH blocks in slot 0 is the same as a pattern of SS / PBCH blocks in slot 1. Similarly, the patterns of SS / PBCH blocks in slot 2, slot 3, and slot 4 are the same as the pattern of SS / PBCH blocks in interval 0. Furthermore, FIGURE 2 further shows that the periodicity of a set of SS / PBCH block bursts is 20 ms. It can be understood that the periodicity of the 20 ms SS / PBCH block burst set shown in FIGURE 2 is simply an example. In actual application, the periodicity of the SS / PBCH block burst set may alternatively be 5 ms, 10 ms, 40 ms, 80 ms, 160 ms or similar. This is not limited in this application. It can be understood that the description of the periodicity of the SS / PBCH block burst set is also applicable below. Additionally, when the SCS is 15 kHz, the network device uses a maximum of 10 positions to send the SS / PBCH blocks. If candidate indices are used to represent the 10 positions, the SS / PBCH block burst set has 10 candidate indices. It can be understood that the above candidate indices may represent candidate and similar positions of SS / PBCH blocks in the burst set of SS / PBCH blocks. This is not limited in this application. In other words, the candidate indexes (candidate index) in the modalities of this application can also be understood as candidate positions, transmission opportunities or the like. For example, μλ / t / zuzz / utmuyo transmission opportunities can be used to represent that the network device has 10 transmission opportunities to send one or more SS / PBCH blocks in the SS / PBCH block burst set. Candidate indexes are used below as an example to illustrate the method provided in the embodiments of this application. As described above, when the SCS is 15 kHz, the network device can have a maximum of 10 candidate indices to send the SS / PBCH blocks in the SS / PBCH burst set. In other words, the network device can send the SS / PBCH blocks at the positions corresponding to the 10 candidate indices. In this case, the network device can represent the 10 candidate indices of the SS / PBCH blocks using 3-bit information used to represent a sequence of demodulation reference signal (demodulation reference signal, DMRS) in the PBCH and 1-bit information á^+7in the PBCH payload information. It can be understood that the above 10 candidate indices of SS / PBCH blocks can also be understood as follows: The network device can indicate the 10 candidate indices of SS / PBCH blocks using the information used to represent a DMRS sequence and PBCH payload information. Additionally, the terminal device may learn, using the 3-bit information used to represent the DMRS sequence in the PBCH and the 1-bit a¿+7 information in the PBCH payload information, that there are 10 candidate indices. After the network device sends the set of SS / PBCH blocks, the terminal device receives the SS / PBCH blocks in a discovery burst transmission window (discovery burst transmission window, DRS window). For example, if the duration of the SS / PBCH block burst sent by the network device is 5 ms, the duration of the DRS window can also be 5 ms. As another example, when the SCS is 30 kHz and the duration of the SS / PBCH block burst sent by the network device is 5 ms, an expression of the start symbols of the SS / PBCH blocks is {2, 8}+14n, and n is equal to 0, 1,2, 3, 4, 5, 6, 7, 8 or 9. When the SCS is 30 kHz, one slot is 0.5 ms and the length of the SS / PBCH block burst set is 5 ms, the SS / PBCH block burst set can occupy 10 slots and there are 20 indices SS / PBCH block candidates in the SS / PBCH block burst set. It can be understood that for a description of n, refer to the description in the case of the SCS being 15 kHz. The details are not described here again. As described above, when the SCS is 30 kHz, the network device has a maximum of 20 positions to send the SS / PBCH blocks in the set of ma / t / zuzz / utmuyo bursts of SS / PBCH blocks. In other words, the network device can send the SS / PBCH blocks at the positions corresponding to the 20 candidate indices. In this case, the network device can indicate the 20 candidate indices of the SS / PBCH blocks using 3-bit information used to represent a DMRS sequence on the PBCH and 2-bit information á¿+6 and ág+7 in the information of PBCH payload. Additionally, the terminal device may learn, using the 3-bit information used to represent the DMRS sequence in the PBCH and the 2-bit information, á¿+6 and a¿+7 in the PBCH payload information, that there are 20 candidate indices. It can be understood that, for different SCS, the duration corresponding to an interval or a relationship between an interval and the corresponding duration is not limited in this application. As another example, when the SCS is 120 kHz and the duration of the SS / PBCH block burst sent by the network device is 5 ms, an expression of the start symbols of the SS / PBCH blocks are {4, 8,16, 20}+28n, and n is equal to 0,1,2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17018. Because two slots occupy 28 OFDM symbols, 28 may represent that the SS / PBCH blocks are repeated in a unit of two slots. 4, 8, 16 and 20 can represent the start symbols of SS / PBCH blocks in every two slots. In other words, a pattern of the SS / PBCH block burst set is repeated in a unit of two intervals. Alternatively, with two intervals as a unit, the relative positions of the SS / PBCH blocks in the SS / PBCH block pattern are the same in each two intervals. The SS / PBCH block burst set can occupy 16 χ 2 = 32 slots, and there are 64 candidate indices of the SS / PBCH blocks in the SS / PBCH block burst set. Because the length of the SS / PBCH block set sent by the network device is 5 ms, and the terminal device can receive the SS / PBCH blocks in a DRS window, the length of the DRS window is of 5 ms. As shown in FIGURE 3, n in FIGURE 3 can be understood as a value of n in the above expression of the starting symbols of SS / PBCH blocks. When n is equal to 5 or 6 (i.e., in every two intervals), the relative positions of the SS / PBCH blocks in the pattern of the SS / PBCH blocks are the same. It can be understood that, a length described in this application can also be understood as duration, and the duration is described in a unit of millisecond (ms). One unit duration is not limited in this application. For example, the duration unit may alternatively be microseconds (pm), seconds (s) or the like. As another example, when the SCS is 240 kHz and the duration of the SS / PBCH ma / t / zuzz / utmuyo block burst sent by the network device is 5 ms, an expression of the start symbols of the SS / PBCH blocks are {8, 12,16, 20, 32, 36, 40, 44}+56n, and n is equal to 0,1,2, 3,4, 5, 6, 7 or 8. Because four slots occupy 56 OFDM symbols, 56 may represent that SS / PBCH blocks are repeated in a unit of four slots. 8, 12, 16, 20, 32, 36, 40 and 44 can represent the start symbols of SS / PBCH blocks in every four slots. Furthermore, the SS / PBCH block burst set can occupy 8 χ 4 = 32 slots, and there are 64 candidate indices of the SS / PBCH blocks in the SS / PBCH block burst set. When the SCS is 120 kHz or 240 kHz, the network device can have a maximum of 64 positions to send the SS / PBCH blocks in the SS / PBCH block burst set. In this case, the network device can represent the 64 candidate indices of the SS / PBCH blocks using 3-bit information used to represent a DMRS sequence on the PBCH and 3-bit information ag+5, aA+6, and aA+7in the PBCH payload information. Additionally, the terminal device can learn, using the 3-bit information used to represent the DMRS sequence in the PBCH and the 3-bit information, áA+5, üA+6, Y «á+7in the PBCH payload information , that there are 64 candidate indices. It can be understood that the above number of SS / PBCH blocks is a maximum number of SS / PBCH blocks that the network device can send. However, in the actual application, in a corresponding subcarrier space, the network device can configure the burst set of SS / PBCH blocks using a related parameter (for example, ssb-PositionsInBurst) in a system information block (system information block, SIB) 1 For example, when the SCS is 15 kHz and the related parameter in SIB1 is set to 1011001011, a number of the plurality of SS / PBCH blocks included in the block burst set of SS / PBCH is 8. 1 represents that an SS / PBCH block is sent in the corresponding time domain, and 0 represents that no SS / PBCH block is sent in the corresponding time domain. As another example, when the SCS is 120 kHz or 240 kHz, and the related parameter in SIB1 is set to 0100111010000001010111001000000101001110101100010011110010000001, the number of SS / PBCH blocks included in the burst set of SS / P blocks BCH is 26. The 1-bit information áÁ+4 in the PBCH payload information can be used to indicate a specific position of the SS / PBCH block burst set. In other words, the 1-bit information aA+4 in the PBCH payload information can be used for a radio mid-frame indication (radio mid-frame). Typically, the transmission of SS / PBCH blocks in the burst set of SS / PBCH blocks should be completed within 5 ms. As shown in FIGURE 2, when the periodicity of the SS / PBCH block burst set is 20 ms, the SS / PBCH block burst set can be within any 5 ms of 20 ms. After the network device sends the burst set of SS / PBCH blocks, the terminal device receives the SS / PBCH blocks in a discovery burst transmission window (discovery burst transmission window, DRS window ). Because the network device transmits the SS / PBCH block burst set to 5 ms, the DRS window length can be less than or equal to 5 ms. In view of this, the network device transmits the SS / PBCH block burst set within the periodicity of the SS / PBCH block set, and a4+4 can be used to indicate that the SS block burst set / PBCH is within the first 5 ms. Consequently, the terminal device receives the SS / PBCH blocks in the DRS window. Alternatively, a4+4 can be used to indicate that the SS / PBCH block burst set is within the second 5 ms. Accordingly, the terminal device receives the SS / PBCH blocks and the like in the DRS window. Using aA+4, the terminal device is enabled to determine the DRS window in time and receive or listen to the SS / PBCH block burst set in the DRS window. Alternatively, the above case can also be referred to as follows: the terminal device is assumed to receive or listen to the SS / PBCH block burst set in the DRS window. A description of receiving or listening to the SS / PBCH block burst established by the terminal device is not limited in the embodiments of this application. Optionally, the terminal device may further receive, in the DRS window, information in the system information block (System Information Block, SIB) 1 corresponding to the SS / PBCH blocks and other system information or data information . This is not limited in this application. It can be understood that, for ease of description, in this application, the information used to indicate the DMRS sequence and the PBCH payload information are called indication information, and the indication information may be used to indicate the candidate indices of the SS / PBCH blocks in the SS / PBCH block burst set of the terminal device. It can be learned from the above that the indication information can indicate a maximum of 64 candidate indexes, but cannot indicate more candidate indexes. In a higher frequency band, the number of SS / PBCH blocks in the SS / PBCH block burst set may be larger. In this case, the indication information indicating 64 candidate indices cannot meet a requirement, and the network device needs more μλ / t / zuzz / utmuyo positions to send the SS / PBCH blocks in the block burst set. SS / PBCH. Furthermore, the indication information cannot indicate more candidate indexes to the terminal device. Therefore, this application provides a method to transmit an SS / PBCH block. In the method, more candidate indexes can be indicated using indication information. Additionally, a network device cannot be limited to 64 candidate indexes and can send more SS / PBCH blocks. FIGURE 4 is a schematic flowchart of a method for transmitting an SS / PBCH block in accordance with this application. The method can be applied to the communication system shown in FIGURE 1. As shown in FIGURE 4, the method includes the following steps. 401. A terminal device receives an SS / PBCH block. A network device can send SS / PBCH blocks as a burst set of SS / PBCH blocks. One or more SS / PBCH blocks in the SS / PBCH block burst set include indication information. For the terminal device, the terminal device may blindly detect SS / PBCH blocks in a DRS window and receive an SS / PBCH block in the SS / PBCH block burst set. In this way, the terminal device can demodulate the SS / PBCH block to obtain the indication information described below. Optionally, the terminal device may alternatively blindly detect SS / PBCH blocks in a DRS window and receive a plurality of SS / PBCH blocks. In this way, the terminal device can demodulate the plurality of SS / PBCH blocks to obtain the indication information described below. For example, the terminal device obtains a PSS through demodulation in the first SS / PBCH block, but cannot obtain an SSS through demodulation. In this case, the terminal device can demodulate another SS / PBCH block to obtain the SSS. 402. The terminal device obtains the indication information based on an SS / PBCH block, wherein the indication information is used to indicate candidate indexes of at least one SS / PBCH block in the burst set of SS / PBCH blocks. PBCH, and a number of the candidate indices is greater than 64. In embodiments of this application, the at least one SS / PBCH block may also be understood as one or more SS / PBCH blocks, and the one or more SS / PBCH blocks may include the SS / PBCH block in the step 401. It can be understood that the plurality of SS / PBCH blocks can be understood as two or more SS / PBCH blocks. Optionally, the indication information includes information used to indicate (or represent) a DMRS sequence and information about the PBCH payload. The ma / t / zuzz / utmuyo series DMRS is the 3-bit DMRS sequence on the PBCH described above. The PBCH payload information is 4-bit information a¿+5, and a4+7in the PBCH payload information. Optionally, the indication information can not only be used to indicate 128 candidate indexes, but can also indicate more candidate indexes. For example, the indication information may further be used to indicate 160 candidate indices. For example, when the indication information obtained by the terminal device includes a4+4, the terminal device can learn that there are 160 candidate indexes. Alternatively, the indication information may further be used to indicate more than 160 candidate indices. As another example, the indication information may further be used to indicate 180 candidate indices. Alternatively, the indication information may further be used to indicate more than 180 candidate indices. As another example, the indication information can further be used to indicate 196 candidate indices. Alternatively, the indication information may further be used to indicate more than 196 candidate indices. As another example, the indication information may further be used to indicate 200 candidate indices. Alternatively, the indication information may further be used to indicate more than 200 candidate indices. As another example, the indication information may further be used to indicate 240 candidate indices. Alternatively, the indication information may further be used to indicate more than 240 candidate indices. The network device may configure a specific number of candidate indexes indicated by the indication information, or may be specified by a protocol, standard, or the like. This is not limited in the terms of this application. For example, the number of candidate indices can be configured using radio resource control (RRC) signaling. In a possible implementation, the method shown in FIGURE 4 may further include step 403. 403. The terminal device receives the SS / PBCH block burst set. In embodiments of this request, after receiving the burst set of SS / PBCH blocks, the terminal device may determine, based on the indication information, whether to demodulate another SS / PBCH block. For example, using the above indication information, the terminal device can know whether the SS / PBCH blocks in different intervals are the same. Optionally, after receiving the SS / PBCH block burst set, the terminal device may demodulate another SS / PBCH block into the SS / PBCH block burst set. Alternatively, the terminal device may not demodulate another SS / PBCH block in the burst set of SS / PBCH blocks. Whether the terminal device demodulates another SS / PBCH block is not limited in the modalities of this ma / t / zuzz / utveryo request. Optionally, the terminal device may receive part or all of the SS / PBCH block burst set. In other words, the terminal device may receive one or more SS / PBCH blocks in the burst set of SS / PBCH blocks. It can be understood that, because the terminal device has received an SS / PBCH block in step 401, the terminal device may receive another SS / PBCH block in addition to the SS / PBCH block in step 403. The SS block / PBCH and the other SS / PBCH block are SS / PBCH blocks in the SS / PBCH block burst set. In embodiments of this application, the 1-bit information aÁ+4 in the PBCH payload information may not indicate a specific position of the SS / PBCH block burst set. Optionally, the terminal device can listen to the set of SS / PBCH block bursts every 5 ms. As shown in FIGURE 2, the terminal device can receive the set of SS / PBCH block bursts within any 5 ms. For example, the terminal device may receive or listen to the established SS / PBCH block burst within the first 5 ms, or may receive or listen to the established SS / PBCH block burst within the second 5 ms. It can be understood that the way in which the terminal device specifically listens to or receives the SS / PBCH block burst set is not limited in the embodiments of this application. In embodiments of this application, the indication information may not only indicate candidate indices of at least one SS / PBCH block in the burst set of SS / PBCH blocks, but may also indicate more candidate indices, e.g. indicate 128 or more candidate indexes. Additionally, the network device can send more SS / PBCH blocks without being limited by 64 candidate indices (or 64 candidate positions or 64 transmission opportunities). The terminal device may learn, using the indication information, a range of a maximum number of SS / PBCH blocks sent by the network device. For example, in a higher frequency band, the number of SS / PBCH blocks in the SS / PBCH block burst set may be more than 64. In this case, the indication information may indicate candidate indices of more than 64. of 64 SS / PBCH blocks in the SS / PBCH block burst set. In embodiments of this application, the network device may send the set of SS / PBCH block bursts in a licensed frequency band or an unlicensed frequency band. In an unlicensed frequency band, before sending the SS / PBCH block burst set, the network device must perform listen before talk (LBT). LBT means that before using a channel, the network device must first obtain an interference status of a frequency band in which the channel is located. The network device can use the channel only when an interference energy (energy) value on the channel is less than or equal to a preset threshold. However, after performing LBT, the network device may not be able to send a specific SS / PBCH block at a specific position (for example, the specified start symbol described above). In other words, when the network device performs an LBT operation, one or more SS / PBCH blocks may not be sent in time. As shown in FIGURE 5A, before sending the SS / PBCH block burst set, the network device performs an LBT operation and implements a successful listen only on symbol 8 in the first slot. Therefore, SS / PBCH blocks from symbol 4 to symbol 7 cannot be sent successfully. In this case, the network device may send, in a remaining interval in FIGURE 5A, an SS / PBCH block that is not sent on time. However, there may be a larger number of SS / PBCH blocks that cannot be sent in time due to the LBT operation carried out by the network device. Therefore, a number of remaining slots may be insufficient to send more SS / PBCH blocks. For example, when an SCS is 120 kHz, 5 ms corresponds to 40 slots and two SS / PBCH blocks are sent in each slot, as shown in FIGURE 5B. If the network device succeeds in LBT only in the fourth slot, the SS / PBCH blocks (for example, six SS / PBCH blocks) in the first slot to the third slot are not sent on time. Because there are two slots left, the network device can send only four SS / PBCH blocks and the remaining slots are insufficient to send all six SS / PBCH blocks. It can be understood that, in the embodiments of this application, an SS / PBCH block that is not sent on time can also be understood as an SS / PBCH block that is not sent successfully, and one or more SS / PBCH blocks that are not sent successfully. sent on time can also be understood as one or more SS / PBCH blocks that are not sent successfully. Therefore, an embodiment of this application provides a method of transmitting an SS / PBCH block. The method can ensure that a network device has enough slots to send one or more SS / PBCH blocks that are not sent on time. FIGURE 6 is a schematic flowchart of a method for transmitting an SS / PBCH block according to an embodiment of this application. The method can be applied to the communication system shown in FIGURE 1. As shown in FIGURE 6, the method includes the following steps. 601. A network device sends configuration information to a terminal device and, accordingly, the terminal device receives the configuration information, wherein the configuration information includes a length of a discovery burst transmission window, and the length of the discovery burst transmission window is ma / t / zuzz / utvery or greater than 5 ms. In this embodiment of this request, the network device may have more slots remaining to send one or more SS / PBCH blocks. It can be learned from the method shown in FIGURE 4 that, the terminal device needs to receive SS / PBCH blocks in the DRS window. Therefore, with the increase of the DRS window length, the terminal device is enabled to receive more SS / PBCH blocks in the DRS window. When the length of the DRS window is increased, a position of a remaining interval is added compared to the method shown in FIGURE 5A or FIGURE 5B is not limited in this embodiment of this application. Optionally, the added remaining slot may be determined based on a corresponding subcarrier spacing and a start symbol expression of the SS / PBCH blocks. For example, the remaining interval added can be the last interval in the DRS window. As another example, the added remaining interval can alternatively be any interval in the DRS window or similar. For example, as shown in FIGURE 2, when an SCS is 15 kHz and the DRS window length is greater than 5 ms, the maximum number of SS / PBCH blocks received by the terminal device in the DRS can be greater than 10. As another example, as shown in FIGURE 3, when the SCS is 120 kHz and the DRS window length is greater than 5 ms, the maximum number of SS / PBCH blocks received by the terminal device in the DRS window may be greater than 64. In other words, the network device may have more intervals to send SS / PBCH blocks. It can be understood that, in this mode of this request, the network device can send more SS / PBCH blocks. However, the SS / PBCH blocks actually sent can be determined based on the information in SIB1. This is not limited in this application. It can be understood that this embodiment of this application is also applicable to a case with a wider subcarrier spacing, for example, a subcarrier spacing of 240 kHz, 480 kHz or 960 kHz. In a possible implementation, a number of candidate SS / PBCH block indices in an SS / PBCH block burst set may be 10, 20, or 64. In a possible implementation, the number of candidate SS / PBCH block indices in the SS / PBCH block burst set may be greater than 64. It can be learned from the background described in this application that, 1-bit information á¿+4in the PBCH payload information can be used to indicate a specific position of the SS / PBCH block burst set. That is, the 1 bit information ^+4 in the PBCH payload information can be used to indicate specific 5 ms within the ma / t / zuzz / utveryo which the SS / PBCH block burst set falls. However, when the DRS window length is greater than 5 ms, the terminal device can learn the specific position of the SS / PBCH block burst set without needing the 1 bit á¿+4 information. In this case, the 1 bit á¿+4 information in the PBCH payload information may be used to indicate other information, or indicate candidate indexes in combination with other information in the PBCH payload information, as described in the method shown in FIGURE 4. Referring to the methods shown in FIGURE 4 and FIGURE 6, the terminal device does not have to learn the specific position of the SS / PBCH block burst set using the 1-bit information a4+4, such that the indication information may indicate more candidate indexes. In addition, even if the network device needs to transmit more SS / PBCH blocks, it can be guaranteed that the indication information can indicate more candidate indexes, and it can also be guaranteed that the network device has enough remaining slots to send one or more SS / PBCH blocks that are not sent on time. Optionally, the length of the discovery burst transmission window may alternatively be greater than 0.5 ms and less than 1 ms. At a higher frequency, for example, when the SCS is 960 kHz, 1920 kHz or even higher, the DRS window length may be greater than 0.5 ms and less than 1 ms. For example, when the SCS is 960 kHz, 64 slots can be included in 1 ms, and at least 64 SS / PBCH blocks can be transmitted in the 64 slots. Optionally, when the SCS is 960 kHz, 64 slots can be included in 1 ms, and alternatively 128 or more SS / PBCH blocks can be transmitted in the 64 slots. In other words, the network device can complete the transmission of the SS / PBCH block burst set in 1 ms. Therefore, the terminal device can receive one or more SS / PBCH blocks within the length of the DRS window. In this case, the terminal device may receive or listen to the established SS / PBCH block burst within every 1 ms, that is, the terminal device may not need the 1 bit á^+4 information. In this case, with reference to the method shown in FIGURE 4, the 1-bit information aq+4 in the PBCH payload information may indicate candidate indexes in combination with other information in the PBCH payload information and information used to indicate a DMRS sequence, as described in the method shown in FIGURE 4. In other words, at a higher frequency, with reference to the method shown in FIGURE 4, when the length of the DRS window is greater than 0.5 ms and less than 1 ms, the network device may not only have more remaining slots to send one or more SS / PBCH blocks that are not sent on time, but may also indicate more candidate indexes using the indication. Optionally, the length of the discovery burst transmission window may alternatively be greater than 1 ms and less than 2 ms. For example, when the SOS is 480 kHz, 32 slots can be included in 1 ms, and at least 32 SS / PBCH blocks can be transmitted in the 32 slots. Optionally, 64 SS / PBCH blocks can be transmitted alternatively in the 32 slots. If the DRS window duration is longer than 5 ms, a resource may be wasted. Therefore, the length of the DRS window can be appropriately reduced. In this case, it is ensured that there are enough slots to send an SS / PBCH block that is not sent on time and wasted resources are avoided. In this embodiment of this application, the configuration information may be included in the RRC signaling, or may be included in the downlink control information (downlink control information, DCI). This is not limited in this application. Optionally, the configuration information may alternatively be included in a broadcast message. For example, when the terminal device initially accesses a cell, the network device may learn a subcarrier spacing used by the terminal device, and the network device may determine, based on the subcarrier spacing, the maximum number of blocks of SS / PBCH and the length of the DRS window. 602. The network device sends one or more sets of SS / PBCH block bursts to the terminal device, and correspondingly the terminal device receives one or more sets of SS / PBCH block bursts in the DRS window. In a possible implementation, the terminal device may receive a set of SS / PBCH block bursts in the DRS window. A method in which a set of SS / PBCH block bursts is included in the DRS window is shown in FIGURE 7A. It can be understood that, for the descriptions of the intervals (or start symbols or the like) occupied by the set of SS / PBCH block bursts, the length of the DRS window and the periodicity of a set of SS block bursts / PBCH, see the descriptions above. The details are not described here again. In FIGURE 7A, a DRS window period is the same as an SS / PBCH block periodicity. In another possible implementation, the terminal device may alternatively receive a plurality of sets of SS / PBCH block bursts in the DRS window. A method in which a plurality of SS / PBCH block burst sets are included in the DRS window is described in detail below. Method 1: At least two of the plurality of SS / PBCH block burst sets occupy different slots, and the positions of the SS / PBCH blocks in the at least two SS / PBCH block burst sets are the same. ma / t / zuzz / utmuyo That the positions of the SS / PBCH blocks in the at least two sets of SS / PBCH block bursts are the same can also be understood as follows: the relative positions of the SS / PBCH blocks in different intervals of the at least two blocks of SS / PBCH burst sets are the same; or it can also be understood as follows: the relative positions of the SS / PBCH blocks in the patterns of the at least two burst sets of SS / PBCH blocks are the same; or it can also be understood as follows: in different SS / PBCH block burst sets, SS / PBCH blocks with the same relative position have the same offset with respect to the starting positions of the block burst sets of SS / PBCH in which the SS / PBCH blocks are respectively located. It can be understood that the description of a position or a relative position is also applicable to other modalities of this application. Optionally, the at least two sets of SS / PBCH block bursts configured by the network device by using a related parameter in the SIB1 are the same. Optionally, SS / PBCH blocks with the same relative position can carry the same content. As shown in FIGURE 7B, the DRS window may include two sets of SS / PBCH block bursts. In FIGURE 7B, the periodicity of an SS / PBCH block burst set is different from a DRS window period. As shown in FIGURE 7C, the two sets of SS / PBCH block bursts occupy different intervals, and the patterns of the first set of SS / PBCH block bursts and the second set of SS / PBCH block bursts are the same. It can be understood that the patterns are the same as described in this document can be understood as follows: the relative positions of the SS / PBCH blocks are the same. Additionally, SS / PBCH blocks can also carry the same content. As another example, a cell-level SS / PBCH block burst set configured by the network device using a related parameter (for example, ssbPositionsInBurst) in SIB1 is 10110010... In this case, the two sets of SS / PBCH block bursts included in the DRS window are 10110010... For example, as shown in FIGURE 7C, the symbol indices in the first slot that is occupied by the first set of SS / PBCH #1 block bursts in the DRS window are symbols 4 to 7 and symbols 8 to 11, and the information in SIB1 is 11... (0's are omitted). The symbol indices in the first interval of the second block burst set of SS / PBCH #1 are also symbols 4 to 7 and symbols 8 to 11, and the information in SIB1 is 11... (the 0). Optionally, when the DRS window includes three sets of SS / PBCH block bursts, the corresponding slots may be the mth slot occupied by the ΜΛ / t / zuzz / utmuyo first set of SS / PBCH block bursts, the m-th slot occupied by the second set of SS / PBCH block bursts, and the m-th slot occupied by the third set of bursts of SS / PBCH blocks. It can be learned from method 1 described above that, when the DRS window includes a plurality of burst sets of SS / PBCH blocks, the expressions (which can also be understood as patterns) of starting symbols of at least two of the plurality of SS / PBCH block burst sets are the same, and the related parameters (e.g., ssb-PositionsInBurst) in SIB1 are the same. Optionally, SS / PBCH blocks with the same relative position can carry the same content. It can be understood that the plurality of SS / PBCH block burst sets may also be referred to as a SS / PBCH block burst set, and at least two SS / PBCH block burst sets may also be understood as at least two subsets. of SS / PBCH blocks. Additionally, before sending the SS / PBCH block burst sets, the network device has to perform an LBT operation. Therefore, even if the burst sets of SS / PBCH blocks configured by the network device using the related parameter in SIB1 are the same, or even if the positions of SS / PBCH blocks in at least two sets of SS / PBCH block bursts are the same, an SS / PBCH block that can actually be sent by the network device must further be determined based on an LBT result. For example, as shown in FIG. 7D, blocks of SS / PBCH that are not sent on time are a burst set of SS / PBCH blocks #11, which is 0100111010000001010111001000000101001110; and the SS / PBCH blocks sent are a burst set of SS / PBCH blocks #12. When sending the second set of SS / PBCH block bursts, the network device can send only the #11 SS / PBCH block burst set. In other words, the first set of SS / PBCH block bursts sent by the network device is actually 0100111010000001010111001000000101001110, and the second set of SS / PBCH block bursts sent by the network device is actually 101100010011110010000001. , in the actual application, the network device can determine a listening period of the LBT based on a real situation. This ensures that after LBT is successful, the network device can send the SS / PBCH blocks that are not sent on time. μλ / t / zuzz / utmuyo It can be understood that, in an example of FIGURE 7D, the SS / PBCH #11 block burst set may also be called a subset of the SS / PBCH #1 block burst set, and the SS / PBCH #12 may also be referred to as a subset of the SS / PBCH #1 block burst set. In a possible implementation, after the terminal device obtains an actual sending status of the SS / PBCH block burst set based on the related parameter in the SIB1 configured by the network device, the terminal device may further perform the following operations based on the result of LBT in a time window that is in the other time window within the DRS window and in which no SS / PBCH block is transmitted: (1) Bit extraction (bit extraction): The terminal device does not receive or send any information in the time window in which no SS / PBCH block is transmitted. For example, the terminal device may not receive a physical downlink control channel (physical downlink control channel, PDCCH) and / or a physical downlink shared channel (physical downlink shared channel, PDSCH). As another example, the terminal device may also not send a physical uplink control channel (physical uplink control channel, PUCCH) and / or a physical uplink shared channel (physical uplink shared channel, PUSCH). . (2) The terminal device may receive a PDCCH and / or a PDSCH; or the terminal device may send a PUCCH and / or a PUSCH. The other time window is a time window in the DRS window except a time window occupied by the first set of SS / PBCH block bursts sent after LBT succeeds, as shown in FIGURE 7E. The time window in which no SS / PBCH block is transmitted is a time window in the other time window except a time window occupied by the burst set of SS / PBCH blocks. That is, the time window in which no SS / PBCH blocks are transmitted should have been used to send one or more SS / PBCH blocks. However, one or more SS / PBCH blocks are not actually sent. Optionally, the network device may further send, to the terminal device, information used to indicate that the transmission has ended. The information used to indicate that the transmission ends may allow the terminal device to learn a time when no SS / PBCH block is sent in the DRS window. In the examples of FIGURE 7D and FIGURE 7E, the terminal device may learn, based on the information used to indicate that the transmission ends, that the network device is no longer sending the set of SS / PBCH block bursts # 12 after sending the ma / t / zuzz / utmuyo block burst set of SS / PBCH #11. Therefore, the terminal device can perform the above operations in the time window that is in the other time window in the DRS window and in which no SS / PBCH block is transmitted. Method 2: At least two of the plurality of SS / PBCH block burst sets occupy different slots, and the positions of the SS / PBCH blocks in the at least two SS / PBCH block burst sets are different. That the positions of the SS / PBCH blocks in the at least two sets of SS / PBCH block bursts are different can also be understood as follows: the relative positions of the SS / PBCH blocks in different intervals of the al least two sets of SS / PBCH block bursts are equal; or it can also be understood as follows: the relative positions of the SS / PBCH blocks in the patterns of the at least two burst sets of SS / PBCH blocks are equal. Optionally, the at least two sets of SS / PBCH block bursts configured by the network device by using a related parameter in the SIB1 may also be different. As shown in FIGURE 8, the DRS window includes a set of SS / PBCH #1 block bursts and a set of SS / PBCH #2 block bursts. The SS / PBCH #1 block burst set configured by the network device using the related parameter in SIB1 is 10110010... The SS / PBCH #2 block burst set configured by the network device using the related parameter related in SIB1 is 10101110... In other words, at least two of the plurality of SS / PBCH block burst sets are located in corresponding intervals and have different SS / PBCH blocks configured by the network device. It can be understood that for specific descriptions of the corresponding intervals, please refer to the descriptions of method 1 above. The details are not described here again. It can be learned from method 2 described above that, when the DRS window includes a plurality of SS / PBCH block burst sets, the expressions of the start symbols of at least two of the plurality of SS / PBCH block burst sets SS / PBCH are different, and / or the related parameters in SIB1 are configured with different information. Optionally, the expressions of the start symbols of at least two of the plurality of SS / PBCH block burst sets are different; or the related parameters in SIB1 are configured with different information. Optionally, the start symbol expressions of at least three of the plurality of SS / PBCH block burst sets are different, and / or the information in the SIB1 is different. Optionally, each of the plurality of SS / PBCH block burst sets has a different start symbol and / or a different SIB1. It can be understood that, ma / t / zuzz / utmuyo for the related parameter in SIB1, please refer to the above description. The details are not described here again. In a possible implementation, the at least two of the plurality of SS / PBCH block burst sets include different numbers of SS / PBCH blocks. For example, in FIGURE 8, a number of SS / PBCH blocks included in the SS / PBCH block burst set #1 is different from a number of SS / PBCH blocks included in the SS / PBCH block burst set #1. SS / PBCH #2. Optionally, the network device may further configure, using system information, whether the positions of the SS / PBCH blocks in the plurality of SS / PBCH block burst sets are the same at different intervals. In other words, the network device may configure, using the system information, a relationship between the plurality of burst sets of SS / PBCH blocks included in the DRS window. For example, with the configuration of system information, the positions of SS / PBCH blocks in the plurality of SS / PBCH block burst sets are the same at different intervals. As another example, with the configuration of system information, the positions of SS / PBCH blocks in the plurality of burst sets of SS / PBCH blocks are different at different intervals. System information may include a MIB or SIB. Optionally, the relationship between the plurality of SS / PBCH block burst sets may be updated with a system information update. Optionally, Method 2 described above is illustrated using an example where a DRS window includes a plurality of SS / PBCH block burst sets. Whether the pluralities of SS / PBCH block burst sets included in different DRS windows are equal, it is not limited in this embodiment of this application. As shown in FIGURE 8, the burst sets of SS / PBCH blocks included in two DRS windows are the same. Optionally, the burst sets of SS / PBCH blocks included in different DRS windows may be different as an alternative. Furthermore, at least one set of SS / PBCH block bursts varies with a different DRS window. For example, the first DRS window includes a set of SS / PBCH #1 block bursts and a set of SS / PBCH #2 block bursts, and the second DRS window may include the set of SS / PBCH #2 block bursts. SS / PBCH #1 and the SS / PBCH #4 block burst set. Alternatively, the first DRS window includes a set of SS / PBCH #1 block bursts and a set of SS / PBCH #2 block bursts, and the second DRS window may include a set of SS / PBCH #2 block bursts. SS / PBCH #3 and a burst set of SS / PBCH #4 blocks. Optionally, in Method 1 and Method 2, a DRS window period may be different from an SS / PBCH block burst set periodicity. Optionally, ma / t / zuzz / utmuyo configuration information may also include a DRS window period (DRS window period). For example, a discoveryBurst-WindowPeriod parameter is used in RRC signaling to indicate the period of the DRS window. Optionally, the DRS window period may be different from at least one SS / PBCH block burst set periodicity included in the DRS window. Optionally, the period of the DRS window may be the same as at least one SS / PBCH block burst set periodicity included in the DRS window. The relationship between the DRS window period and the periodicity of the SS / PBCH block burst set is not limited in this embodiment of this application. Optionally, for method 1, the method shown in FIGURE 6 is combined with the method shown in FIGURE 4. The sets of SS / PBCH block bursts sent by the network device in different duration are the same. In other words, in different duration (duration to transmit the first set of SS / PBCH #1 block bursts by the network device and duration to transmit the second set of SS / PBCH #1 block bursts by the network device). network, as shown in FIGURE 7B), the relative positions of the SS / PBCH blocks in the SS / PBCH block burst set patterns are the same. Therefore, the network device can indicate candidate indices of the SS / PBCH blocks in the burst sets of SS / PBCH blocks using only one piece of indication information. Accordingly, because the plurality of SS / PBCH block burst sets included in the DRS window are the same, the terminal device can obtain the candidate indices of the SS / PBCH blocks in the block burst sets. from SS / PBCH upon receipt of the single piece of indication information. For method 2, the method shown in FIGURE 6 is combined with the method shown in FIGURE 4. The sets of SS / PBCH block bursts sent by the network device in different duration are different. In other words, in different duration (duration to transmit the first set of SS / PBCH #1 block bursts by the network device and duration to transmit the second set of SS / PBCH #2 block bursts by the network device). network, as shown in FIGURE 8), the relative positions of the SS / PBCH blocks in the SS / PBCH block burst set patterns are different. Alternatively, at different duration, the numbers of SS / PBCH blocks in patterns of the SS / PBCH block burst sets are different. Therefore, the network device may indicate candidate indices of the SS / PBCH blocks in the burst sets of SS / PBCH blocks using a plurality of pieces of indication information. Accordingly, because the plurality of burst sets of SS / PBCH blocks included in the DRS window are different, the terminal device ma / t / zuzz / utmuyo can obtain the candidate indices of the SS / PBCH blocks in the plurality of SS / PBCH block burst sets upon receiving the plurality of pieces of indication information. Optionally, the quantities of the plurality of candidate index types may be the same as a number of SS / PBCH block burst sets included in the DRS window. In a possible implementation, the method shown in FIGURE 6 may further include the following: The network device sends first information to the terminal device and, consequently, the terminal device receives the first information. The first information is used to indicate a gap (Ngap) between two adjacent SS / PBCH block burst sets in the plurality of SS / PBCH block burst sets in the DRS window. The space may be in one unit of an interval, one unit of a symbol, or similar. This is not limited in this mode of this application. The first information may be included in RRC signaling or included in a main information block (MIB) or a SIB. This is not limited in this mode of this application. For example, when there are two sets of SS / PBCH block bursts in the same DRS window, the network device indicates to the terminal device a gap between the two sets of SS / PBCH block bursts using the first information. . The terminal device may be enabled to learn a specific position of the second set of SS / PBCH block bursts. For example, when the space Ngap is one unit of an interval and Ngapes equals 10, the terminal device may learn that a starting symbol expression of the second set of SS / PBCH block bursts is 140(10x14)+{0 , 4, 14, 20}+28n (n is equal to 0, 1,..., or 15). Optionally, when there are more SS / PBCH block burst sets (e.g., three or four) in a single DRS window, a gap between two adjacent SS / PBCH block burst sets may be the same or different from another. space between two adjacent SS / PBCH block burst sets. The first information is used to allow the terminal device to learn a specific position from another set of SS / PBCH block bursts (a set of SS / PBCH block bursts other than the first set of SS / PBCH block bursts). in the DRS window. In a possible implementation, the method shown in FIGURE 6 may further include the following: The network device sends a second information to the terminal device, and the terminal device receives the second information. The second information is used to indicate whether the terminal device listens for another SS / PBCH block burst established in the DRS window. The other set of SS / PBCH block bursts is a set of ma / t / zuzz / utmuyo SS / PBCH block bursts in the DRS window except the first set of SS / PBCH block bursts. For example, the second information may indicate, in the form of a bitmap (bitmap), whether the terminal device has to listen to a plurality of burst sets of SS / PBCH blocks in the DRS window. Specifically, a length (a number of bits used) of the bitmap corresponds to a number of burst sets of SS / PBCH blocks in the DRS window. For example, if the DRS window includes three sets of SS / PBCH block bursts, the second information can be 110. 1 is a set of SS / PBCH block bursts that should be listened to and 0 is a set of SS / PBCH block bursts. SS / PBCH blocks that do not have to be listened to. In this case, the second information can be used to indicate that the first set of SS / PBCH block bursts and the second set of SS / PBCH block bursts in the DRS window should be heard, and the third set of bursts of SS / PBCH blocks in the DRS window does not have to be listened to. As another example, the second information may further indicate, in the form of a bit, whether the terminal device is to listen for another SS / PBCH block burst established in the DRS window. For example, when the second information is 1, it may indicate that the terminal device has to listen to another SS / PBCH block burst set in the DRS window; or when the second information is 0, it may indicate that the terminal device does not have to listen to another SS / PBCH block burst set in the DRS window. Optionally, the second information may be included in the RRC signaling, or included in a MIB, or the like. This is not limited in this mode of this application. Optionally, the first information and the second information may be included in the same RRC signaling piece or the same MIB. A specific relationship between the first information and the second information is not limited in this form of this application. In this embodiment of this application, the terminal device does not have to learn a specific position of a set of SS / PBCH block bursts using the 1-bit information á^+4, such that the indication information can indicate more candidate indices. In addition, even if the network device needs to transmit more SS / PBCH blocks, it can be guaranteed that the indication information can indicate more candidate indexes, and it can also be guaranteed that the network device has enough remaining slots to send one or more SS / PBCH blocks that are not sent on time. It can be learned from the above description that, when the SCS is 240 kHz, the expression of the starting symbols of the SS / PBCH blocks can be {8, 12, 16, 20, 32, ma / t / zuzz / utmuyo 36, 40, 44}+56n, and η is equal to 0, 1, 2, 3, 4, 5, 6, 7 or 8. It can be learned that when a starting symbol of an SS / PBCH block is {12, 40}+56n, the SS / PBCH block spans two intervals. For example, when n is equal to 0, the start symbol of the SS / PBCH block can be symbol 12 or symbol 40. When the start symbol is symbol 12, the symbol indices of the SS / PBCH block They are from symbol 12 to symbol 15; or when the starting symbol is symbol 40, the symbol indices of the SS / PBCH block are symbol 40 to symbol 43. Because an interval includes 14 symbols, symbol 12, symbol 13, symbol 14, and symbol 15 are not in the same range, and symbol 40, symbol 41, symbol 42, and symbol 43 are not in the same range. Typically, when sending an SS / PBCH block, the network device also needs to consider a PDSCH that has a quasi-co-location (QCL) relationship with the SS / PBCH block. For example, a beam used by the network device to send an SS / PBCH block is the same as a beam used by the network device to send a PDSCH. However, when an SS / PBCH block spans two slots, the terminal device cannot obtain an SS / PBCH block associated with a DMRS or other downlink reference signal (downlink reference signal, DL RS) in the PDSCH. For example, the other DL RS, for example, a channel state information reference signal (Channel State Information Reference Signal, CSI-RS), can be used for CSI acquisition, beam management beams, BM) or phase tracking. In view of this, for the case where the SCS is 240 kHz, this application further proposes a pattern (pattern) of a burst set of SS / PBCH blocks. In addition, for a case with a wider subcarrier spacing, for example, a case where the SCS is 480 kHz, 960 kHz or 1920 kHz, this application further proposes a pattern of a burst set of SS / PBCH blocks . Additionally, in case the SCS is 120 kHz, the network device may not have enough remaining slots to send one or more SS / PBCH blocks that are not sent on time. Therefore, for the case where the SCS is 120 kHz, this application further proposes a pattern of a burst set of SS / PBCH blocks. The SS / PBCH block position distributions are described below for cases where the subcarrier spacings are respectively 120 kHz, 240 kHz, 480 kHz, 960 kHz and 1920 kHz. 1. The subcarrier spacing is 120 kHz. C1: repetition in a unit of two intervals If two SS / PBCH blocks are included in each slot, four SS / PBCH blocks can be included in every two slots. Therefore, the starting symbols of SS / PBCH blocks satisfy the following conditions: ma / t / zuzz / utmuyo the starting symbol indices of SS / PBCH blocks in every two intervals are less than 11, and the SS / PBCH blocks are located in symbols with even symbol indices; and two adjacent SS / PBCH blocks are separated by one or more of 3, 5, 7, or 9 symbols. Optionally, the length of a DRS window can be equal to 5 ms. For example, an expression for the starting symbols of SS / PBCH blocks can be {0,4,14,20}+28n (n is equal to 0,1,... or 15). Optionally, the method is combined with the method shown in FIGURE 6. For example, when the DRS window length is 10 ms, the number of intervals that can be included in 10 ms is 8x10=80. In this case, in the above expression {0, 4, 14, 20}+28n of the starting symbols of the SS / PBCH blocks, n can be equal to 0, 1,... or 39. Also, for repetition in the unit of two intervals, n has 40 values, and two blocks of SS / PBCH are included in each interval. Therefore, a number of candidate indices indicated by the indication information may be 40 x 2 x 2 = 160. As shown in FIGURE 9A, an expression of the starting symbols of SS / PBCH blocks is {4, 8, 16, 20}+28n, and n can be equal to 0, 1, ... or 15. In FIGURE 9A, two adjacent SS / PBCH blocks may be separated by 3 symbols and / or 7 symbols. Referring to the methods shown in FIGURE 9A and FIGURE 4, n can be set to another value. Referring to the methods shown in FIGURE 9A and FIGURE 6, for example, the duration of the DRS window can be greater than 5 ms. In this case, a number of remaining intervals are increased. Therefore, when the network device performs an LBT operation, even if the number of SS / PBCH blocks that are not sent on time is relatively large, the remaining intervals can satisfy a requirement of the network device. C2: repetition in one unit of an interval If two SS / PBCH blocks are included in each slot, two SS / PBCH blocks can be included in each slot. Therefore, the starting symbols of SS / PBCH blocks satisfy the following conditions: the starting symbol indices of the SS / PBCH blocks in each slot are less than 11, and the SS / PBCH blocks are located on symbols with even symbol indices; and two adjacent SS / PBCH blocks are separated by one or more of 3, 5, 7, or 9 symbols. Optionally, when the length of a DRS window is 5 ms, for example, an expression of the start symbols of SS / PBCH blocks may be {0, 4}+14n (n is ma / t / zuzz / utmuyo equal to 0, 1,..., or 31). Optionally, when the length of the DRS window is 10 ms, for example, in the above expression {0,4}+14n of the start symbols of the SS / PBCH blocks, n is equal to 0, 1, ..., or 79. In addition, a number of candidate indexes indicated by the indication information may be 160. It can be understood that the above C1 and C2 are illustrated using a case where two SS / PBCH blocks are included in an interval. However, in another possible implementation, three SS / PBCH blocks may alternatively be included in a slot. In this case, this application further illustrates another distribution of SS / PBCH block positions. C1: repetition in a unit of two intervals If three SS / PBCH blocks are included in each slot, six SS / PBCH blocks can be included in every two slots. Therefore, the starting symbols of SS / PBCH blocks satisfy the following conditions: the starting symbol indices of the SS / PBCH blocks in every two slots are less than 11, and the SS / PBCH blocks are located on symbols with even symbol indices; and two adjacent SS / PBCH blocks are separated by one or more of 3, 5, or 7 symbols. Because there are three SS / PBCH blocks in each slot, when the subcarrier spacing is 120 kHz, the maximum number of SS / PBCH blocks that can be sent is 64. Therefore, the number of slots that can be occupy SS / PBCH blocks can be less than or equal to 11. Considering that different subcarrier spacings have different positions in the time domain, to ensure alignment at slot level and / or symbol level, n may not equal 4 or 9. For example, n may equal to 0, 1,2, 3, 5, 6, 7, 8, 10, or 11. Optionally, when n equals 12, the starting symbols of SS / PBCH blocks can be even symbols whose symbol indices are less than 11 in interval 21 and interval 22. In other words, when n is equal to 12, SS / PBCH blocks 61 through 64 can be located on even symbols whose symbol indices are less than 11 in interval 21 and / or interval 22. In this case, a number of candidate indices of SS / PBCH blocks in the burst set of SS / PBCH blocks is 64. Referring to the method shown in FIGURE 4, when the number of candidate indices is greater than 64, n may be equal to 12, or may be equal to 13, or similar. It can be understood that the above value of n is simply an example. In a specific implementation, a value of n may be determined based on a number of candidate indices. Alternatively, the value of n may be defined by a related standard or protocol. ma / t / zuzz / utmuyo Alternatively, the network device may configure a value of n, or similar. This is not limited in this mode of this application. It can be understood that the above description of n is also applicable to other parts of the embodiments of this application. Optionally, when a length of a DRS window is 5 ms, for example, an expression of the start symbols of SS / PBCH blocks may be {2, 6,10,16, 20, 24}+28n ( n is equal to 0, 1,2, 3, 5, 6, 7, 8, 10 or 11). Optionally, when the length of the DRS window is 10 ms, in the above expression, n may be equal to 0.1,... or 39. In addition, a number of candidate indices indicated by the indication information may be any of 128,160,196 or 240. In another possible implementation, the two adjacent SS / PBCH blocks above are separated by 3 or 5 symbols. In this case, n can be equal to 0, 1,2, 3, 4, 5, 6, 7, 8, 9 or 10. When n is equal to 11, the starting symbols of the SS / PBCH blocks can be even symbols whose symbol indices are less than 11 in interval 23. In other words, when n equals 11, SS / PBCH block number 64 can be located in an even symbol whose symbol index is less than 11 in the interval 23. In this case, the number of candidate indices of SS / PBCH blocks in the SS / PBCH block burst set is 64. Referring to the method shown in FIGURE 4, when the number of candidate indices is greater than 64, n can be equal to 11, 12 or similar. Optionally, when a length of a DRS window is 5 ms, for example, an expression of the start symbols of SS / PBCH blocks may be {2, 6,10,16, 20, 24}+28n ( n is equal to 0,1,2, 3, 4, 5, 6, 7, 8, 9 or 10). When n is equal to 11, the starting symbol of the SS / PBCH block can be symbol 2. Optionally, when the length of the DRS window is 10 ms, in the above expression, n may be equal to 0.1,... or 39. In addition, a number of candidate indices indicated by the indication information may be any of 128, 160,196 or 240. As shown in FIGURE 9B, an expression of the starting symbols of SS / PBCH blocks is {2, 6, 10, 16, 20, 24}+28n, and n is equal to 0, 1,2, 3 , 5, 6, 7, 8, 10, or 11. When n is equal to 12, the expression for the starting symbols of SS / PBCH blocks can be {2, 6, 10, 16}. As shown in FIGURE 9C, an expression of the starting symbols of SS / PBCH blocks is {2, 6, 10, 16, 20, 24}+28n, and n is equal to 0, 1,2, 3 , 4, 5, 6, 7, 8, 9 or 10. When n is equal to 11, the expression for the starting symbols of SS / PBCH blocks can be {2, 6, 10, 16}. It can be understood that, FIGURE 9A to FIGURE 9C are illustrated by using an example where the symbol indices are 0, 1,2, 3, ... and 13. However, in some μλ / t / zuzz / utmuyo modalities, the symbol indices can alternatively start from 1, for example, the symbol indices are 1, 2, ... and 14. In this case, the expression of the starting symbols described in the modalities of this application may vary with different symbol indexes. C2: repetition in one unit of an interval If three SS / PBCH blocks are included in each slot, three SS / PBCH blocks can be included in each slot. Therefore, the starting symbols of SS / PBCH blocks satisfy the following conditions: the starting symbol indices of the SS / PBCH blocks in each slot are less than 11, and the SS / PBCH blocks are located on symbols with even symbol indices; and two adjacent SS / PBCH blocks are separated by one or more of 3, 5, or 7 symbols. In this case, n can be equal to any value from 0 to 24, and n is not equal to 8, 9, 18, or 19. When n is equal to 25, the start symbol of the SS / PBCH block can be the symbol 2. In this case, the number of candidate indexes of SS / PBCH blocks in the SS / PBCH block burst set is 64. Optionally, when a length of a DRS window is 5 ms, for example, an expression of the start symbols of SS / PBCH blocks may be {2,6,10}+14n (n is equal to 0, 1,2, 3, 4, 5, 6, 7, 10, 11, 12, 13, 14, 15, 16, 17, 20, 21,22, 23, 24). When n is equal to 25, the start symbol of the SS / PBCH block can be 2. Optionally, when the length of the DRS window is 10 ms, in the above expression, n can be equal to 0, 1, ... or 79. In addition, a number of candidate indices that can be indicated by the information indication can be any of 128, 160 or 196. In another possible implementation, the two adjacent SS / PBCH blocks above are separated by 3 and 5 symbols. In this case, n can be equal to any value from 0 to 21. When n is equal to 11, the starting symbols of SS / PBCH blocks can even be symbols whose symbol indices are less than 11 in a current interval . Optionally, when the length of a DRS window is 5 ms, for example, an expression of the start symbols of SS / PBCH blocks may be {2, 6, 10}+14n (n equals 0, 1, 2, 3, ..., or 21). When n is equal to 22, the start symbol of the SS / PBCH block can be 2. In this case, the number of candidate indices of the SS / PBCH blocks in the burst set of SS / PBCH blocks is 64 . Optionally, when the length of the DRS window is 10 ms, in the above expression, n can be equal to 0.1,... or 79. Additionally, a number of candidate indices denoted ma / t / zuzz / utmuyo per indication information can be any of 128, 160,196 or 240. It can be understood that, for an expression of the SS / PBCH blocks for a case where the SCS is 120 χ 2UkHz, it refers to a case where the SCS is 120 kHz, where u is equal to 1, 2,3, 4, or 5..., that is, u is an integer greater than or equal to 1. 2. The subcarrier spacing is 240 kHz. C1: repetition in a unit of four intervals If two SS / PBCH blocks are included in each slot, eight SS / PBCH blocks can be included in every four slots. Therefore, the starting symbols of SS / PBCH blocks satisfy the following conditions: the starting symbol indices of the SS / PBCH blocks in every four slots are less than 11, and the SS / PBCH blocks are located on symbols with even symbol indices; and two adjacent SS / PBCH blocks are separated by one or more of 3, 5, 7, or 9 symbols. For example, an expression for the starting symbols of SS / PBCH blocks might be {0, 4, 14, 20, 30, 36, 44, 50}+56n (n equals 0, 1,2, 3 , 5, 6, 7 or 8). C2: repetition in a unit of two intervals If two SS / PBCH blocks are included in each slot, four SS / PBCH blocks can be included in every two slots. Therefore, the starting symbols of SS / PBCH blocks satisfy the following conditions: the starting symbol indices of the SS / PBCH blocks in every two slots are less than 11, and the SS / PBCH blocks are located on symbols with even symbol indices; and two adjacent SS / PBCH blocks are separated by one or more of 3, 5, 7, or 9 symbols. For example, an expression for the starting symbols of SS / PBCH blocks might be {0, 4, 14, 20}+28n (n equals O, 1,2, 3, 5, 6, 7, 10, 11, 12, 13, 14, 15, 16or 17). C3: repetition in one unit of an interval If two SS / PBCH blocks are included in each slot, two SS / PBCH blocks can be included in each slot. Therefore, the starting symbols of SS / PBCH blocks satisfy the following conditions: the starting symbol indices of the SS / PBCH blocks in each slot are less than 11, and the SS / PBCH blocks are located on symbols with even symbol indices; and two adjacent SS / PBCH blocks are separated by one or more of 3, 5, 7, or 9 symbols. ma / t / zuzz / utmuyo For example, an expression for the starting symbols of SS / PBCH blocks might be {0, 4}+14n (n equals 0, 1, 2, 3, 4, 5, 6, 7, 10, 11 , 12, 13, 14, 15, 16, 21, ... or 34). It can be understood that the above C1 and C2 are illustrated using a case where two SS / PBCH blocks are included in an interval. However, in another possible implementation, three SS / PBCH blocks may alternatively be included in a slot. In this case, this application further illustrates another distribution of SS / PBCH block positions. C1: repetition in a unit of four intervals If three SS / PBCH blocks are included in each slot, 12 SS / PBCH blocks can be included in every four slots. Therefore, the starting symbols of SS / PBCH blocks satisfy the following conditions: the starting symbol indices of the SS / PBCH blocks in every four slots are less than 11, and the SS / PBCH blocks are located on symbols with even symbol indices; and two adjacent SS / PBCH blocks are separated by one or more of 3, 5, or 7 symbols. For example, an expression for the starting symbols of SS / PBCH blocks might be {2, 6, 10, 16, 20, 24, 30, 34, 38, 42, 46, 50}+56n (n equals to 0, 1,2, 3 or 4). C2: repetition in a unit of two intervals If three SS / PBCH blocks are included in each slot, six SS / PBCH blocks can be included in every two slots. Therefore, the starting symbols of SS / PBCH blocks satisfy the following conditions: the starting symbol indices of the SS / PBCH blocks in every two slots are less than 11, and the SS / PBCH blocks are located on symbols with even symbol indices; and two adjacent SS / PBCH blocks are separated by 3 and 5 symbols or both. For example, an expression for the starting symbols of SS / PBCH blocks can be {2, 6, 10, 16, 20, 24}+28n (n is equal to 0, 1, ... or 9). When n is equal to 10, the starting symbols of SS / PBCH blocks 61 to 64 can be even symbols whose starting symbol indices are less than 11 in slots 21 and 22. In this case, a number of Candidate indices of the SS / PBCH blocks in the burst set of SS / PBCH blocks is 64. C3: repetition in one unit of an interval If three SS / PBCH blocks are included in each slot, three SS / PBCH blocks can be included in each slot. Therefore, the starting symbols of SS / PBCH blocks satisfy the following conditions: the starting symbol indices of the SS / PBCH blocks in each interval are ma / t / zuzz / utmuyo less than 11, and the SS / PBCH blocks are located on symbols with even symbol indices; and two adjacent SS / PBCH blocks are separated by one or more of 3, 5, or 7 symbols. For example, an expression for the starting symbols of SS / PBCH blocks can be {0, 4, 10}+14n (n equals 0, 1, 2, 3, 4, 5, ..., or twenty). When n is equal to 21, the starting symbol of SS / PBCH block number 64 can be an even symbol whose starting symbol index is less than 11 in interval 21. In this case, a number of candidate indices of the SS / PBCH blocks in the SS / PBCH block burst set is 64. It can be understood that, when the subcarrier spacing is 240 kHz, the length of a DRS window is not limited in this embodiment of this application. For example, the DRS window length may be equal to 5 ms or similar. 3. The subcarrier spacing is 480 kHz. C1: repetition in a unit of eight intervals If two SS / PBCH blocks are included in each slot, 16 SS / PBCH blocks can be included in every eight slots. Therefore, the starting symbols of SS / PBCH blocks satisfy the following conditions: The starting symbol indices of the SS / PBCH blocks in every eight slots are less than 11, and the SS / PBCH blocks are located on symbols with even symbol indices; and two adjacent SS / PBCH blocks are separated by one or more of 5, 7, or 9 symbols. C2: repetition in a unit of four intervals If two SS / PBCH blocks are included in each slot, eight SS / PBCH blocks can be included in every four slots. Therefore, the starting symbols of SS / PBCH blocks satisfy the following conditions: The starting symbol indices of the SS / PBCH blocks in every four slots are less than 11, and the SS / PBCH blocks are located on symbols with even symbol indices; and two adjacent SS / PBCH blocks are separated by one or more of 5, 7, or 9 symbols. C3: repetition in a unit of two intervals If two SS / PBCH blocks are included in each slot, four SS / PBCH blocks can be included in every two slots. Therefore, the starting symbols of SS / PBCH blocks satisfy the following conditions: the starting symbol indices of the SS / PBCH blocks in every two intervals are μλ / t / zuzz / utmuyo less than 11, and the SS / PBCH blocks are located on symbols with even symbol indices; and two adjacent SS / PBCH blocks are separated by one or more of 5, 7, or 9 symbols. C4: repetition in one unit of an interval If two SS / PBCH blocks are included in each slot, two SS / PBCH blocks can be included in each slot. Therefore, the starting symbols of SS / PBCH blocks satisfy the following conditions: the starting symbol indices of the SS / PBCH blocks in each slot are less than 11, and the SS / PBCH blocks are located on symbols with even symbol indices; and two adjacent SS / PBCH blocks are separated by one or more of 5, 7, or 9 symbols. 4. SCS subcarrier spacing is 960 kHz. C1: repetition in a unit of 16 intervals If two SS / PBCH blocks are included in each slot, 32 SS / PBCH blocks can be included in every 16 slots. Therefore, the starting symbols of SS / PBCH blocks satisfy the following conditions: the starting symbol indices of the SS / PBCH blocks in every 16 slots are less than 11, and the SS / PBCH blocks are located on symbols with even symbol indices; and two adjacent SS / PBCH blocks are separated by one or more of 5, 7, or 9 symbols. For C2 to C5, refer to C1 to C4 for the case where the subcarrier spacing is 480 kHz. The details are not described here again. 5. The subcarrier spacing is 1920 kHz. C1: repetition in a unit of 32 intervals If two SS / PBCH blocks are included in each slot, 64 SS / PBCH blocks can be included in each 32 slots. Therefore, the starting symbols of SS / PBCH blocks satisfy the following conditions: the starting symbol indices of the SS / PBCH blocks in every 32 intervals are less than 11, and the SS / PBCH blocks are located on symbols with even symbol indices; and two adjacent SS / PBCH blocks are separated by one or more of 5, 7, or 9 symbols. C2: repetition in a unit of 16 intervals ma / t / zuzz / utmuyo If two SS / PBCH blocks are included in each slot, 32 SS / PBCH blocks can be included in every 16 slots. Therefore, the starting symbols of SS / PBCH blocks satisfy the following conditions: the starting symbol indices of the SS / PBCH blocks in every 16 slots are less than 11, and the SS / PBCH blocks are located on symbols with even symbol indices; and two adjacent SS / PBCH blocks are separated by one or more of 5, 7, or 9 symbols. For C3 to C6, refer to C1 to C4 for the case where the subcarrier spacing is 480 kHz. The details are not described here again. It can be understood that, for a description of n for the case where the SCS is 240 kHz, 480 kHz, 960 kHz, 1920 kHz, or similar, see the description of n for the case where the SCS is 120 kHz. The details are not described here again. This embodiment of this application provides burst patterns of SS / PBCH blocks set at different subcarrier spacings, allowing the terminal device to better obtain specific positions of SS / PBCH blocks. Normally, the relationship between the SS / PBCH block and the PDSCH in QCL with the SS / PBCH block can be shown in FIGURE 10A. One SS / PBCH block occupies four symbols, the PDSCH occupies two symbols, and the SS / PBCH block is frequency division multiplexed with the PDSCH. Specifically, the time domain resource allocation of the PDSCH is described in Table 1. S can indicate a specific symbol that is in the four symbols occupied by the SS / PBCH block and where the PDSCH starts transmitting. For example, if S is equal to 2, it may indicate that the PDSCH begins transmission on a symbol that is among the four symbols occupied by the SS / PBCH block and whose symbol index is 2. L may indicate a symbol length occupied by the PDSCH. For example, if L is equal to 2, it can indicate that the symbol length occupied by the PDSCH is 2, that is, the PDSCH occupies two symbols. Table 1 row index (index) DM RS-TypeA-Position (symbol position of a DMRS) PDSCH mapping type (mapping type) Ko (interval space) S L (length) 1 (note 1) 2, 3 Type B 0 2 2 2 2, 3 Type B 0 4 2 3 2, 3 Type B 0 6 2 4 2, 3 Type B 0 8 2 5 2, 3 Type B 0 10 2 6 Reserved row index (index) DM RS-TypeA-Position (symbol position of a DMRS) PDSCH mapping type (mapping type) Ko (interval space) S L (length) 7 Reserved 8 2, 3 Type B 0 2 4 9 2, 3 Type B 0 4 4 10 2, 3 Type B 0 6 4 11 2, 3 Type B 0 8 4 12 2, 3 Type B 0 10 4 13 (note 1) 2, 3 Type B 0 2 7 14 (note 1) 2 Type A 0 2 12 3 Type A 0 3 11 15 (note 1) 2, 3 Type A 0 0 6 16 (note 1) 2, 3 Type A 0 2 6 ma / t / zuzz / uy^uyo In some other embodiments of this application, the relationship between the SS / PBCH block and the PDSCH may further satisfy the following conditions: the PDSCH occupies a symbol length of 1 or 3; and / or a PDSCH start symbol is the second symbol or the fourth symbol of the four symbols occupied by the SS / PBCH block. For example, if Tss / pbch represents a start symbol position occupied by the SS / PBCH block associated with the PDSCH, a PDSCH start symbol position can be any value from Tss / pbch+1 to Tss / pbch+ 3. Optionally, when the initial symbol position of the PDSCH is Tss / pbch+1, the symbol length occupied by the PDSCH is 3, as shown in FIGURE 10B. Optionally, when the starting symbol position of the PDSCH is Tss / pbch+3, the symbol length occupied by the PDSCH is 1, as shown in FIGURE 10C. For example, the time domain resource allocation of the PDSCH is described in Table 2. Table 2 row index DM RS-TypeA-Position PDSCH mapping type Ko S L 1 (note 1) 2, 3 Type A / B 0 {Tss / pbch+1 , Tss / pbch+3} {1,3} 2 2, 3 Type A / B 0 3 2, 3 Type A / B 0 4 2, 3 Type A / B 0 5 2, 3 Type A / B 0 It can be understood that a format of the PDSCH is not limited in this embodiment of this application. For example, the PDSCH may support Type A format and may also support Type B format and the like. Optionally, the method is combined with the method shown in FIGURE 6. In this case, any SS / PBCH block in the burst set of SS / PBCH blocks and a PDSCH physical downlink shared channel associated with any SS / PBCH block meet the following conditions: the PDSCH occupies a symbol length of 1 or 3; and / or a PDSCH start symbol is the second symbol or the fourth symbol in four symbols occupied by any SS / PBCH block. In this embodiment of this application, in a high frequency band, with suitable values ​​of S and L, the terminal device can accurately obtain channel positions of a type 0-PDCCH and a PDSCH in minimum remaining system information (system information). minimum remaining system, RMSI) corresponding to an SS / PBCH block, so that the information included in the channels can be better obtained by demodulation. For example, the information included in the channels may include related information used to initiate random access and, as another example, may include initial bandwidth portion (BWP) information and the like. This is not limited in this application. It can be understood that the above modalities have respective focuses. For an implementation that is not described in detail in one modality, see other modality. The details are not described here again. Furthermore, the modalities described in this specification may be independent solutions or may be combined based on internal logic. All of these solutions are within the protection scope of this application. In other words, the previous modalities can be combined with each other. For example, the above methods in FIGURE 4 and FIGURE 6 can be combined. As another example, the related methods shown in FIGURE 4 and FIGURE 9A (or FIGURE 9B, FIGURE 9C or the like) can be combined. As another example, the methods shown in FIGURE 4 and FIGURE 10B (or FIGURE 10C) can be combined. As another example, the related methods shown in FIGURE 4, FIGURE 6, and FIGURE 9A (or FIGURE 9B, FIGURE 9C or the like) can be combined. As another example, the methods shown in FIGURE 4, FIGURE 6, and FIGURE 10B (or FIGURE 10C) can be combined. As another example, the methods shown in FIGURE 4, FIGURE 6, FIGURE 9A (or FIGURE 9B, FIGURE 9C or the like), and FIGURE 10B (or FIGURE 10C) can be combined. A communication apparatus provided in the embodiments of this application is described below. FIGURE 11 is a schematic diagram of a structure of a communication apparatus according to an embodiment of this application. The communication apparatus may be configured to carry out operations carried out by the terminal device in the embodiments of the previous method. For example, the communication apparatus may be configured to carry out the method shown in FIGURE 4 and / or the method shown in FIGURE 6. As shown in FIGURE 11, the communication apparatus communication includes a transceiver unit 1101 and a processing unit 1102. The transceiver unit 1101 is configured to receive an SS / PBCH block. The processing unit 1102 is configured to obtain indication information based on an SS / PBCH block. The indication information is used to indicate candidate indexes of at least one SS / PBCH block in an SS / PBCH block burst set, a number of candidate indexes is greater than 64, and the SS block burst set / PBCH is a set in which the previous SS / PBCH block is located. In a possible implementation, the indication information includes information used to indicate a demodulation reference signal DMRS sequence and information about the PBCH payload. The DMRS sequence occupies 3 bits and the PBCH payload occupies 4 bits. In one possible implementation, the number of candidate indices is greater than or equal to 128. In a possible implementation, the transceiver unit 1101 is further configured to receive the set of SS / PBCH block bursts. In a possible implementation, the transceiver unit 1101 is further configured to receive configuration information. The configuration information includes a length of a discovery burst transmission window, the length of the discovery burst transmission window is greater than 5 ms, and the terminal device uses the discovery burst transmission window to receive one or more SS / PBCH block burst sets. Optionally, the processing unit 1102 may further control the transceiver unit 1101 to receive the configuration information. Optionally, it may be shown in FIGURE 7A to FIGURE 7E or in FIGURE 8. Optionally, the patterns of a burst set of SS / PBCH blocks may be shown in FIGURE 9A to FIGURE 9C. Optionally, patterns of one of the plurality of SS / PBCH block burst sets may be shown in FIGURE 9A to FIGURE 9C. In a possible implementation, at least two of the plurality of SS / PBCH block burst sets occupy different slots, and the positions of the SS / PBCH blocks in the at least two SS / PBCH block burst sets are the same; or at least two of the plurality of SS / PBCH block burst sets occupy different intervals, and the positions of the SS / PBCH blocks in the at least two SS / PBCH block burst sets are different; or at least two of the plurality of sets ΜΛ / t / zuzz / utmuyo of SS / PBCH block bursts include different numbers of SS / PBCH blocks. In a possible implementation, when at least two of the plurality of SS / PBCH block burst sets occupy different slots, and the positions of the SS / PBCH blocks in at least two SS / PBCH block burst sets are Likewise, the set of SS / PBCH block bursts sent by a network device to the terminal device is determined by the network device based on a listen-before-talk LBT result. In a possible implementation, the configuration information further includes a discovery burst transmission window period, and the discovery burst transmission window period is different from an SS / PBCH block burst set periodicity. In a possible implementation, a time domain position occupied by an SS / PBCH block in the burst set of SS / PBCH blocks meets the following conditions: a start symbol of an SS / PBCH block in the SS / PBCH block burst set is any even symbol between the first symbol and the eleventh symbol in an interval configured by the network device; and / or the start symbols of two adjacent SS / PBCH blocks in the SS / PBCH block burst set are separated by any one or more of 3, 5, 7 or 9 symbols. In a possible implementation, the SS / PBCH block and a downlink shared physical PDSCH channel associated with the SS / PBCH block meet the following conditions: the PDSCH occupies a symbol length of 1 or 3; and / or a PDSCH start symbol is the second symbol or the fourth symbol in four symbols occupied by an SS / PBCH block. Optionally, a relationship between the PDSCH and the SS / PBCH block may be shown in FIGURE 10B and FIGURE 10C. For example, the transceiver unit may be configured to perform step 401 and step 403 in FIGURE 4. The transceiver unit may further be configured to perform step 601 and step 602 in FIGURE 6. The processing unit may be configured to perform step 402 in FIGURE 4. It can be understood that the methods carried out by the previous units are merely examples. For a specific step carried out by each unit, see the methods described above. It should be understood that, when the communication apparatus is a terminal device or a component for implementing the above functions in a terminal device, the processing unit 1102 may be one or more processors, and the transceiver unit 1101 It may be a transceiver, or the transceiver unit 1101 may alternatively be a transmitter unit and a receiver unit. The sending unit may be a transmitter, the receiving unit may be a receiver, and the sending unit and the receiving unit are integrated into one component, for example, a transceiver. When the communication apparatus is a circuit system such as a chip, the processing unit 1102 may be one or more processors, and the transceiver unit 1101 may be an input / output interface, which is also called a communication interface, a interface circuit, an interface or the like. Alternatively, the transceiver unit 1101 may be a sending unit and a receiving unit, the sending unit may be an output interface, the receiving unit may be an input interface, and the sending unit and the receiving unit They are integrated into a unit, for example, an input / output interface. The communication apparatus in this embodiment of this application can carry out any function carried out by the terminal device in the embodiments of the previous method. For specific executable steps and / or functions, please refer to the detailed descriptions in the above method modalities. Only a brief description is provided in this document, and the details are not described again. FIGURE 11 is used again. FIGURE 11 is a schematic diagram of a structure of a communication apparatus according to an embodiment of this application. The communication apparatus may be configured to carry out operations carried out by the network device in the embodiments of the above method. For example, the communication apparatus may be configured to carry out the method shown in FIGURE 4 and / or the method shown in FIGURE 6. As shown in FIGURE 11, the communication apparatus includes a transceiver unit 1101 and a processing unit 1102. The transceiver unit 1101 is configured to receive or send a signal. The processing unit 1102 is configured to send a set of SS / PBCH block bursts to a terminal device using the transceiver unit. One or more SS / PBCH blocks in the SS / PBCH block burst set include indication information. The indication information is used to indicate candidate indexes of at least one SS / PBCH block in the burst set of SS / PBCH blocks, and a number of candidate indexes is greater than 64. In a possible implementation, the processing unit 1102 is further configured to send configuration information to the terminal device using the transceiver unit. The configuration information includes a length of a discovery burst transmission window, the length of the discovery burst transmission window is greater than 5 ms, and the terminal device uses the transmission window of discovery bursts to receive one or more sets of SS / PBCH block bursts. It can be understood that, for the descriptions of the indication information and the discovery burst transmission window, refer to the above embodiments. The details are not described here again. It should be understood that, when the communication apparatus is a network device or a component for implementing the above functions in a network device, the processing unit 1102 may be one or more processors, and the transceiver unit 1101 may be a transceiver, or the transceiver unit 1101 may alternatively be a transmitter unit and a receiver unit. The sending unit may be a transmitter, the receiving unit may be a receiver, and the sending unit and the receiving unit are integrated into one component, for example, a transceiver. When the communication apparatus is a circuit system such as a chip, the processing unit 1102 may be one or more processors, and the transceiver unit 1101 may be an input / output interface, which is also called a communication interface, a circuit interface, an interface or similar. Alternatively, the transceiver unit 1101 may be a sending unit and a receiving unit, the sending unit may be an output interface, the receiving unit may be an input interface, and the sending unit and the receiving unit They are integrated into a unit, for example, an input / output interface. The communication apparatus in this embodiment of this application can carry out any function carried out by the network device in the embodiments of the previous method. For specific executable steps and / or functions, please refer to the detailed descriptions in the above method modalities. Only a brief description is provided in this document, and the details are not described again. In a possible implementation, the communication apparatus may be the terminal device in the embodiments of the above method. In this case, the transceiver unit 1101 may be implemented using a transceiver, and the processing unit 1102 may be implemented using a processor. As shown in FIGURE 12, a communication apparatus 120 includes one or more processors 1220 and a transceiver 1210. The processor and transceiver may be configured to carry out the functions, operations or the like carried out by the above terminal device. . For example, the transceiver can be configured to receive an SS / PBCH block. As another example, the transceiver may be configured to receive one or more sets of SS / PBCH block bursts or the like. As another example, the transceiver can be further configured to receive configuration information. For example, the processor can be configured to obtain indication information based on an SS / PBCH block. In a possible implementation, the communication apparatus may be the network device in the embodiments of the previous method. In this case, the transceiver unit 1101 may be implemented using a transceiver, and the processing unit 1102 may be implemented using a processor. FIGURE 12 is used again. As shown in FIGURE 12, the communication apparatus 120 includes one or more processors 1220 and a transceiver 1210. The processor and transceiver may be configured to carry out the functions, operations or the like carried out by the network device. former. For example, the processor may send a set of SS / PBCH block bursts using the transceiver. As another example, the processor may send configuration information and the like using the transceiver. In the above implementations, it may optionally be shown in FIGURE 7A to FIGURE 7E or in FIGURE 8. Optionally, the patterns of a burst set of SS / PBCH blocks may be shown in FIGURE 9A to FIGURE 9C. Optionally, patterns of one of the plurality of SS / PBCH block burst sets may be shown in FIGURE 9A to FIGURE 9C. Optionally, a relationship between the PDSCH and the SS / PBCH block may be shown in FIGURE 10B and FIGURE 10C. In various implementations of the communication apparatus shown in FIGURE 12, the transceiver may include a receiver and a transmitter. The receiver is configured to carry out a reception function (or operation) and the transmitter is configured to carry out a transmission function (or operation). Furthermore, the transceiver is configured to communicate with another device / appliance through a transmission medium. The processor 1220 sends and receives data and / or signaling using the transceiver 1210 and is configured to implement the corresponding methods shown in FIGURE 4 and FIGURE 6 in the embodiments of the previous method. Optionally, the communication apparatus 120 may further include one or more memories 1230, configured to store program instructions and / or data. The memory 1230 is coupled to the processor 1220. The coupling in this embodiment of this application is an indirect coupling or communication connection between devices, units or modules for the exchange of information between the devices, units or modules, and may be in electrical, mechanical or other forms. The processor 1220 may be coordinated with the memory 1230. The processor 1220 may execute the ma / t / zuzz / utmuyo program instructions stored in the memory 1230. Optionally, at least one of the one or more memories may be included in the processor. A specific connection means between the transceiver 1210, the processor 1220 and the memory 1230 is not limited in this embodiment of this application. In this embodiment of this application, in FIGURE 12, the memory 1230, the processor 1220 and the transceiver 1210 are connected by a bus 1240. The bus is indicated by a bold line in FIGURE 12. One way of connection among others components is merely an example for description and is not used as a limitation. The bus can be classified into an address bus, a data bus, a control bus and the like. For ease of representation, only one bold line is used to represent the bus in FIGURE 12, but this does not mean that there is only one bus or only one type of bus. In embodiments of this application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic device, a discrete gate, or a logic device. transistor, a discrete hardware component, or the like, and may implement or carry out the methods, steps, and logical block diagrams described in the embodiments of this application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed with reference to embodiments of this application may be carried out directly by a hardware processor, or may be carried out using a combination of hardware in the processor and a software module, or the like. . It can be understood that, when the communication apparatus shown in FIGURE 12 is a terminal device, the terminal device may further have more elements than those in FIGURE 12. For example, the terminal device shown in FIGURE 12 may further include an antenna . This is not limited in this mode of this application. It can be understood that, when the communication apparatus shown in FIGURE 12 is a network device, the network device may also have more elements and the like than those in FIGURE 12. This is not limited in this embodiment of this application. It can be understood that the above methods carried out by the processor and transceiver are simply examples. For the specific steps performed by the processor and transceiver, see the methods described above. In another possible implementation, the communication apparatus may be a circuit system in a terminal device. In this case, the processing unit 1102 may be implemented using a processing circuit, and the transceiver unit 1101 may be implemented using an interface circuit. As shown in FIGURE 13, the communication apparatus may include a processing circuit 1302 and an interface circuit 1301. ma / t / zuzz / utmuyo The processing circuit 1302 may be a chip, a logic circuit, an integrated circuit, a processing circuit, a system-on-chip (System-on-Chip, SoC), or the like. The interface circuit 1301 may be a communication interface, an input / output interface, or the like. For example, the interface circuit can be configured to obtain an SS / PBCH block. For example, the interface circuit may be configured to obtain configuration information and the like. As another example, the interface circuit may be further configured to obtain one or more sets of SS / PBCH block bursts. As another example, the processing circuitry may be configured to obtain indication information based on the SS / PBCH block. Optionally, a pattern of one or more sets of SS / PBCH block bursts may be shown in FIGURE 7A to FIGURE 7E or in FIGURE 8. Optionally, the patterns of a burst set of SS / PBCH blocks may be shown in FIGURE 9A to FIGURE 9C. Optionally, patterns of one of the plurality of SS / PBCH block burst sets may be shown in FIGURE 9A to FIGURE 9C. Optionally, a relationship between the PDSCH and the SS / PBCH block may be shown in FIGURE 10B and FIGURE 10C. In embodiments of this application, the processing circuit may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic device, a discrete gate or a device. transistor logic, a discrete hardware component or the like, and may implement or carry out the methods, steps and logic block diagrams described in the embodiments of this application. It can be understood that the methods carried out by the interface circuit and the processing circuit described above are merely examples. For the steps specifically carried out by the interface circuit and the processing circuit, please refer to the methods described above. In various embodiments provided in this application, it should be understood that the system, apparatus and method described may be implemented in other ways. For example, the apparatus embodiments described are merely an example. For example, division into units is simply a logical function division and may be another division in the actual implementation. For example, a plurality of units or components may be combined or integrated into another system, or some functions may be ignored or not executed. Furthermore, the mutual couplings or direct couplings or communication connections shown or discussed may be implemented through some interfaces, indirect couplings or communication connections between the appliances or units, or electrical ma / t / zuzz / utmuyo connections, mechanical connections or connections in other ways. Units described as separate parts may or may not be physically separate, and parts shown as units may or may not be physical units, may be located in one location, or may be distributed over a plurality of network drives. Some or all units may be selected based on actual needs to achieve the technical effects of the solutions provided in the modalities of this application. Furthermore, the functional units in embodiments of this application may be integrated into a processing unit, each of the units may exist alone physically, or two or more units may be integrated into one unit. The integrated unit may be implemented in the form of hardware, or it may be implemented in the form of a software functional unit. When the embedded unit is implemented in the form of a software functional unit and is sold or used as a stand-alone product, the embedded unit may be stored on a computer-readable storage medium. Based on this understanding, the technical solutions of this application essentially, or the conventional technology contributing part, or all or some of the technical solutions can be implemented in the form of a software product. The computer software product is stored on a readable storage medium and includes various instructions to instruct a computer device (which may be, for example, a personal computer, a server, or a network device) to carry out all or some of the steps of the methods described in modalities of this application. The above readable storage media includes any media that can store program code, such as a USB flash drive, a removable hard drive, read-only memory (read-only memory, ROM), random access memory random access, RAM), a magnetic disk or an optical disk. Additionally, this application further provides a computer program. The computer program is configured to implement an operation and / or processing carried out by the terminal device in the method embodiments provided in this application. This application further provides a computer-readable storage medium. Computer readable storage medium stores computer code. When the computer code is executed on a computer, the computer is enabled to carry out an operation and / or processing carried out by the terminal device in the method embodiments provided in this application. This application further provides a computer program product. The computer program product includes a computer code or a computer program. When the computer code or computer program is executed on ma / t / zuzz / utmuyo a computer, an operation and / or processing carried out by the terminal device is implemented in the method embodiments provided in this application. This application further provides a wireless communication system. The wireless communication system includes the network device and the terminal device in the embodiments of this application. The above descriptions are only specific implementations of this application, but are not intended to limit the scope of protection of this application. Any variation or replacement readily ascertained by a person skilled in the art within the technical scope disclosed in this application will be within the protective scope of this application. Therefore, the scope of protection of this application will be subject to the scope of protection of the claims. Based on the description of FIGURE 4, for example, the indication information in step 402 includes the information used to indicate the DMRS series and the PBCH payload information, and based on the previous description, the PBCH payload information also includes information aA+4 in the PBCH payload information. The indication information in the embodiments of this application may be used to indicate 128, 256, 512, 1024 or 2048 candidate indices. It can be understood that the number of candidate indices indicated by the indication information in the embodiments of this application is simply an example, and the number of candidate indices may be another value or the like. The details are not described here again. That is, the corresponding number of candidate indices can be indicated using the information used to indicate the DMRS sequence and the information about the PBCH payload. One method to indicate candidate indexes using indication information is as follows: Optionally, the indication information uses 7 bits (bits) to represent a maximum of 128 candidate indices, where the candidate indices are all located in a burst set window or half frame; and includes the information used to indicate (or represent) the DMRS sequence and the PBCH payload information. The DMRS sequence is the 3-bit DMRS sequence (bits) in the PBCH described above. PBCH payload information is 4-bit information (bits) á4, ñ-Á+S> O / +6> and ^4+7.0Ok+1, ^Á+6> and °rG / +2 > “á+5> ¿Ü+6> and ^ / +7,Or^Á+3> &Á+5> <L + 6> V aA47in the PBCH payload information. In this case, an information update period in SIB1 is 80 ms. Any three bits of aÁ, aA+í, áA+2, and dy+3 in the PBCH payload are used to represent the three least significant bits (bits) of a system frame number (system frame number). system, SFN) (least significant bits (ma / t / zuzz / utvery least significant bit, LSB) of SFN). Optionally, the indication information uses 8 bits (bits) to represent a maximum of 256 candidate indices, where the candidate indices are all located in a burst set window or half frame; and includes the information used to indicate (or represent) the DMRS sequence and the PBCH payload information. The DMRS sequence is the 3-bit DMRS sequence (bits) in the PBCH described above. The PBCH payload information is 5-bit information (bits) áÁ, ^4+4- ^A+6> AND ^4+7, °r®Á+1> ^4+4, ^4 + 5 - ^4+6> AND $4+7, ΟΓ a^+2, ^4+4-^4+5, ^Λ+6> AND ^4 + 7>0^4+3> αΛ+4, ά / +5> «á+6, Y ^á+7 θηthe PBCH payload information. In this case, an information update period in SIB1 is 80 ms. Any three bits of á¿, a¿+1, a¿+2, and ^4+3 θη the PBCH payload are used to represent the three least significant bits (bits) of an SFN (LSB of SFN ). When the information update period in the SIB1 is 80 ms, the three bits (bits) used to indicate (or represent) the least significant bits (LSB) of the SFN are located in the payload information of the PBCH, and seven bits (bits) used to indicate that the most significant bits (most significant bit, MSB) of the SFN are located in a MIB. For example, the network device may define third indication information. Therefore, the bits in the MIB representing the SFN information may include a bit occupied by the third indication information and the most significant bits (MSB), which are 6 bits (bits). That is, the third indication information occupies one bit and is represented by using any bit in a pdcch-ConfigSIB1 parameter in the MIB or a parameter with a similar function. The pdcch-ConfigSIB1 parameter in the MIB can be used to indicate configuration information of a type 0 (type 0) PDCCH that has a quasi-co-location (QCL) relationship with an SSB. Optionally, when the information update period in the SIB1 is 40 ms, the third indication information occupies two bits, for example, it is represented by using any two bits in the pdcch-ConfigSIB1 parameter in the MIB. Optionally, when the information update period in SIB1 is 20 ms, the third indication information occupies three bits and is represented by using any three bits in the pdcch-ConfigSIB1 parameter in the MIB. Optionally, when the information update period in SIB1 is 10 ms, the third indication information occupies four bits and is represented by using any four bits in the pdcch-ConfigSIB1 parameter in the MIB. For example, the network device may further define fourth indication information. The fourth indication information represents a number of bits used to indicate kssb. The parameter kSSb represents a separation between a subcarrier index #0 in an RB in ma / t / zuzz / utmuyo where an SSB is located and a subcarrier index #0 in a CRB (common RB) that overlaps the RB. When the subcarrier spacing between an SSB and a Type 0 PDCCH carrying CQRESET#0 and having a QCL relationship with the SSB is {120 kHz, 240 kHz}, {240 kHz, 480 kHz}, or {480 kHz, 960 kHz}, the fourth indication information includes a 4-bit ssb-SubcarrierOffset parameter in the MIB and additional fifth indication information. The fifth indication information may be represented using any bit in the pdcch-ConfigSIB1 parameter in the MIB, or using 1-bit information occupied by a¿, áÁ+1, áÁ+2, or ág+3 in the PBCH payload. Alternatively, when the subcarrier spacing between an SSB and a type 0 PDCCH carrying CORESET#0 and having a QCL relationship with the SSB is {120 kHz, 480 kHz} or {240 kHz, 960 kHz}, the fourth Indication information includes a 4-bit ssb-SubcarrierOffset parameter in the MIB and additional fifth indication information. The fifth indication information can be represented using any two bits in the pdcch-ConfigSIB1 parameter in the MIB, or using 2-bit information occupied by y úa+1, or aÁy αΑ+2, or aÁy αΑ+3, or αΛ+1y aÁ+2, or aÁ+1and αΑ+3, or aÁ+2and aÁ+3in the PBCH payload, or using a total of two bits, including any bit in the pdcch-ConfigSIB1 parameter in MIB and 1-bit busy information by αΑ, αΑ+ί, αΑ+2, or aA+3in the PBCH payload. Alternatively, when the subcarrier spacing between an SSB and a type 0 PDCCH carrying CORESET#0 and having a QCL relationship with the SSB is {120 kHz, 960 kHz}, the fourth indication information includes a 4 ssb-SubcarrierOffset bits in the MIB of the fifth additional indication information. The fifth indication information can be represented using any three bits in the pdcch-SIBConfig1 parameter in the MIB, or using 3-bit information occupied by αΑ, aA+1, and aA+2, or αΑ,αΑ+1, and aA +3,0aA+2, and uA+3, or áj+1, aA+2, and üa+3in the PBCH payload, or using a total of three bits including any bit in the pdcch-ConfigSIB1 parameter in the MIB and 2-bit information occupied by aAy αΑ+1,οαΑy aA+2, or aAy aÁ+3, or aA+1y aA+2, or aA+1y aA+3, or aA+2yaA+3in the PBCH payload , or by using a total of three bits, including any two bits in the pdcch-ConfigSIB1 parameter in the MIB and the 1-bit information occupied by aA, aA+1, aA+2, or ^+3 ®n PBCH payload. Optionally, when the subcarrier spacing between an SSB and a Type 0 PDCCH carrying CORESET#0 and having a QCL relationship with the SSB is {120 kHz, 60 kHz}, {480 kHz, 240 kHz}, or {960 kHz , 480 kHz}, the fourth indication information is any three bits in a 4-bit ssb-SubcarrierOffset parameter in the MIB, for example, it represents three most significant bits (MSB) or three least significant bits (LSB) in the ssbSubcarrierOffset parameter . When the subcarrier spacing between an SSB and a type 0 PDCCH carrying CQRESET#0 and having a QCL relationship with the SSB is {240 kHz, 60 kHz}, ma / t / zuzz / utmuyo {480 kHz, 120 kHz} or {960 kHz, 240 kHz}, the fourth indication information is any two bits in a 4-bit ssb-SubcarrierOffset parameter in the MIB, for example, it represents two most significant bits (MSB) or two least significant bits (LSB ) in the ssbSubcarrierOffset parameter. When the subcarrier spacing between an SSB and a Type 0 PDCCH carrying CORESET#0 and having a QCL relationship with the SSB is {480 kHz, 60 kHz} or {960 kHz, 120 kHz}, the fourth indication information is any bit in a 4-bit ssb-SubcamerOffset parameter in the MIB, for example, it represents a most significant bit (MSB), a least significant bit (LSB), or a penultimate least significant bit (LSB) in the ssbSubcarrierOffset parameter. When the subcarrier spacing between an SSB and a type 0 PDCCH carrying CORESET#0 and having a QCL relationship with the SSB is {960 kHz, 60 kHz}, the fourth indication information is any bit in a 4 bits ssbSubcarrierOffset in MIB, for example, represents a most significant bit (MSB), a least significant bit (LSB), or a penultimate least significant bit (LSB) in the ssbSubcarrierOffset parameter. Optionally, a redundant bit in the ssbSubcarrierOffset indication parameter can be used to indicate another parameter, for example, to indicate a system frame number or a TRP index, or to distinguish between a MIB1 and a MIB2. MIB1 is carried on a PBCH channel operating in a licensed frequency band, and MIB2 is carried on a PBCH channel operating in a shared licensed frequency band. Alternatively, MIB1 is carried on a PBCH channel operating in a shared unlicensed frequency band, and MIB2 is carried on a PBCH channel operating in an unlicensed frequency band. Optionally, the indication information uses 8 bits (bits) to represent a maximum of 256 candidate indices, where the candidate indices are all located in a burst set window or half frame; and includes the information used to indicate (or represent) the DMRS sequence and the PBCH payload information. The DMRS sequence is the 3-bit DMRS sequence (bits) in the PBCH described above. The PBCH payload information is 5-bit information (bits) aA, ^λ+ι< aA+s, ^Á+6' AND ^Á+7>0üA, üa+2, αΑ+5, áA+ 6, and aA+7,0ñA, ^á+3^á+5^ üá+6' and ñA+7, or aA+í, á^+2, «A+s· and ^a+7,0« Α+ι> “A+3> ^a+5' üA+6, and Ó4+7, or aA+2, aA+3, aA+5, aA+6, and aA+1in the payload information of PBCH. In this case, an information update period in SIB1 is 40 ms. Any pair of bits from a.A, aA+1, aA+2, or cq+3 θη the PBCH payload are used to represent two least significant bits (bits) of an SFN (LSB of SFN). Optionally, the indication information uses 9 bits (bits) to represent a maximum of 512 candidate indices, where the candidate indices are all located in a ma / t / zuzz / utmuyo burst set window or half frame; and includes the information used to indicate (or represent) the DMRS sequence and the PBCH payload information. The DMRS sequence is the 3-bit DMRS sequence (bits) in the PBCH described above. The PBCH payload information is 6-bit information (bits) “l+i, “1+4, “1+5, “1+6, and aA+7, or a4, άι+2,“ι +4>“1+5, “1+6, and ag+7, or aA, á.A+3,üA+4,aA+5, aA+6, and “1+7, or aA+1, aA+2, aA+4, aA+5, aA+6, and aA+7, or aA+1, aA+3, aA+4, aA+5, aA+6, and aA+7, or aA+ 2, aA+3, ág+4, “i+s, “i+β, and “1+7 in the PBCH payload information. In this case, an information update period in SIB1 is 40 ms. Any pair of bits (bits) of áÁ, áA41, αΛ+2, or “ / i+3 ®n in the PBCH payload are used to represent two least significant bits (bits) of a SEN (LSB of SEN). Optionally, the indication information uses 9 bits (bits) to represent a maximum of 512 candidate indices, where the candidate indices are all located in a burst set window or half frame; and includes the information used to indicate (or represent) the DMRS sequence and the PBCH payload information. The DMRS sequence is the 3-bit DMRS sequence (bits) in the PBCH described above. The PBCH payload information is 6-bit information (bits) “1+1, “l+2-“l+5, “1+6, and “1+7,0“1, á^+l ' “1+3, “1+5, “1+6, and “1+7, θ “1, “1+2- “1+3, “1+5, “1+6, and aA+7 , or aA+1, a4+z, aA+3, aA+5, aA+6, and aA+7in the PBCH payload information. In this case, an information update period in SIB1 is 20 ms. Any bit (bits) of áA, áA+4, áA+2, or aA43 in the PBCH payload is used to represent a least significant bit (bits) of an SFN (LSB of SFN). Optionally, the indication information uses 10 bits (bits) to represent a maximum of 1024 candidate indices, where the candidate indices are all located in a burst set window or half frame; and includes the information used to indicate (or represent) the DMRS sequence and the PBCH payload information. The DMRS sequence is the 3-bit DMRS sequence (bits) in the PBCH described above. The PBCH payload information is 7-bit information (bits) áA, “1+1, “l+2> “1+4, “1+5, Üá+6' and “1+7,0^ A' “1+1, “1+3, “1+4, “1+5, &Α+6' V “1+7,0“1, “1+2, “1+3, “1+4” , “i+s, “1+6, and “1+7, ° “1+1, “1+2, “1+3, “1+4, “i+s, “i+6>” and “ 1+7in PBCH payload information. In this case, an information update period in SIB1 is 20 ms. Any bit (bits) of aA, aA+1, a¿+2, or aA+3 in the PBCH payload are used to represent a least significant bit (bits) of an SFN (LSB of SFN). Optionally, the indication information uses 10 bits (bits) to represent a maximum of 1024 candidate indices, where the candidate indices are all located in a burst set window or half frame; and includes the information used to indicate (or represent) the DMRS sequence and the PBCH payload information. The DMRS sequence is the 3-bit DMRS sequence (bits) in the PBCH described above. The PBCH payload information is 7-bit information (bits) a¿+1, ^4+2-^4+3^+5, «á+6. or ^+7in the PBCH payload information. In this case, an information update period in SIB1 is 10 ms. Optionally, the indication information uses 11 bits (bits) to represent a maximum of 2048 candidate indices, where the candidate indices are all located in a burst set window or half frame; and includes the information used to indicate (or represent) the DMRS sequence and the PBCH payload information. The DMRS sequence is the 3-bit DMRS sequence (bits) in the PBCH described above. The PBCH payload information is 8-bit information (bits) a¿+1, a¿+2, a¿+3, a¿+4, ay+5, a¿+6, or a¿+7in the PBCH payload information. In this case, an information update period in SIB1 is 10 ms. In this application, the above describes the condition that a start symbol of an SSB (the SS / PBCH block described above) meets when the subcarrier spacing is 480 kHz or 960 kHz. An index of the SSB start symbol is described in detail below. It can be understood that the SS / PBCH block described above in this application may also be called candidate SSB, and the starting symbol may also be called first symbol or the like. A specific name is not limited in the terms of this application. The candidate SSB described in this application may be understood to refer to a candidate position for SSB submission. It can be understood that a specific value of n described in this application can be determined by the length of a DRS window. Alternatively, a specific value of n described in this application may be determined by a length of a DRS window and an uplink-downlink interval setting. In other words, a value corresponding to a slot used for transmission of the uplink service must be omitted for a specific value of n described in this application. For example, when a subcarrier spacing of an SSB is 480 kHz or 960 kHz, for a licensed frequency band, an index of the first symbol of a candidate SSB (candidate SS / PBCH blocks) may satisfy any of the following conditions: {0, 6}+14n (n is equal to 0, 1, 2, ... or 31); {0, 8}+14n (n is equal to 0, 1,2, ... or 31); {0, 10}+14n (n is equal to 0,1,2,... or 31); {2, 8}+14n (n is equal to 0, 1,2, ... or 31); {2, 10}+14n (n is equal to 0, 1,2, ... or 31); and {4, 10}+14n (n is equal to 0, 1,2, ... or 31). It can be understood that each expression described herein is illustrated based on repetition in a ma / t / zuzz / utveryo unit of an interval. That is, under any of the conditions described above, each of the intervals described above may include two candidate SSBs. For example, an index of the first symbol of a candidate SSB satisfies: {0, 6}+14n (n equals 0,1,2,... or 31). When n is equal to 0, the symbol 0 of the first interval is an index of the first symbol of one candidate SSB, and the symbol 6 of the first interval may be an index of the first symbol of the other candidate SSB. As another example, when n equals 1, symbol 0 of the second interval is an index of the first symbol of one candidate SSB, and symbol 6 of the second interval is an index of the first symbol of the other candidate SSB. It can be understood that, this application is based on the repetition in one unit of an interval, the above description of the index of the first symbol is also illustrated using an example where an interval includes 14 symbols. However, in this application, the indexes can alternatively be numbered in ascending order. For example, alternatively, when n equals 1, an index of the first symbol of one candidate SSB may be 14, and an index of the first symbol of the other candidate SSB may be 20. Alternatively, an index to the first symbol of a candidate SSB may satisfy any of the following conditions: μλ / t / zuzz / utmuyo {0, 6, 14, 20}+28n (n is equal to 0, 1,2, ..., or 15); {0, 6, 14, 22}+28n (n is equal to 0, 1,2, ..., or 15); {0, 6, 14, 24}+28n (n is equal to 0, 1,2, ..., or 15); {0, 6, 16, 22}+28n (n is equal to 0, 1,2, ..., or 15); {0, 6, 16, 24}+28n (n is equal to 0, 1,2, ..., or 15); {0, 6, 18, 24}+28n (n is equal to 0, 1,2, ..., or 15); {0, 8, 14, 20}+28n (n is equal to 0, 1,2, ..., or 15); {0, 8, 14, 22}+28n (n is equal to 0, 1,2, .... or 15); {0, 8, 14, 24}+28n (n is equal to 0, 1,2, ..., or 15); {0, 8, 16, 22}+28n (n is equal to 0, 1,2, ..., or 15); {0, 8, 16, 24}+28n (n is equal to 0, 1,2, ..., or 15); {0, 8, 18, 24}+28n (n is equal to 0, 1,2, ..., or 15); {0, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., o15); {0, 10, 14, 22}+28n (n is equal to 0, 1,2, ..., o15); {0, 10, 14, 24}+28n (n is equal to 0, 1,2, ..., o15); {0, 10, 16, 22}+28n (n is equal to 0, 1,2, ..., o15); {0, 10, 16, 24}+28n (n is equal to 0, 1,2, ..., o15); {0, 10, 18, 24}+28n (n is equal to 0, 1,2, ..., o15); {2, 8, 14, 20}+28n (n is equal to 0, 1,2, ..., or 15); {2, 8, 14, 22}+28n (n is equal to 0, 1,2, ..., or 15); {2, 8, 14, 24}+28n (n is equal to 0, 1,2, . ·, or 15); {2, 8, 16, 22}+28n (n is equal to 0, 1,2, . or 15); {2, 8,16, 24}+28n (n is equal to 0,1,2,. or 15); {2, 8, 18, 24}+28n (n is equal to 0, 1,2, . or 15); {2, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., or 15); {2, 10, 14, 22}+28n (n is equal to 0, 1,2, ..., or 15); {2,10,14, 24}+28n (n is equal to 0,1,2, ..., or 15); {2,10,16, 22}+28n (n is equal to 0,1,2,..., or 15); {2,10,16, 24}+28n (n is equal to 0,1,2, ..., or 15); {2,10,18, 24}+28n (n is equal to 0,1,2,..., or 15); {4, 10, 14, 20}+28n (n is equal to 0,1,2, ..., or 15); {4, 10, 14, 22}+28n (n is equal to 0, 1,2, ..., or 15); {4, 10, 14, 24}+28n (n is equal to 0, 1,2, ..., or 15); {4, 10, 16, 22}+28n (n is equal to 0, 1,2, ..., or 15); {4, 10, 16, 24}+28n (n is equal to 0, 1,2, , or 15); and {4,10,18, 24}+28n (n is equal to 0,1,2,..., or 15). It can be understood that each expression ma / t / zuzz / utmuyo described in this document is illustrated based on repetition in a two-interval unit. That is, each two of the above intervals can include four candidate SSBs. In this case, the symbol indices can be from 0 to 27. That is, an index of the first symbol of a candidate SSB is represented in one unit of every two intervals. For example, an index of the first symbol of a candidate SSB satisfies: {0, 6, 14, 20}+28n (n equals 0, 1,2, ... or 15). When n is equal to 0, in every two intervals (which can also be understood as the first interval and the second interval), symbol 0 is an index of the first symbol of a candidate SSB, symbol 6 is an index of the first symbol of a candidate SSB, symbol 14 is an index of the first symbol of a candidate SSB, and symbol 20 is an index of the first symbol of a candidate SSB. As another example, when n is equal to 1, in every two intervals (which can also be understood as the third interval and the fourth interval), the symbol 0 is an index (also called index 28 if the symbols included in each interval are ordered in ascending order) of the first symbol of a candidate SSB, symbol 6 is an index (also called index 34) of the first symbol of a candidate SSB, symbol 14 is an index (also called index 42) of the first symbol of an SSB candidate, and symbol 20 is an index (also called index 48) of the first symbol of a candidate SSB. It can be understood that the description of the indexes in this document is also applicable to the following description. To avoid repetition, the details are not described below again. Alternatively, an index of the first symbol of a candidate SSB satisfies any of the following conditions: {a, b, c, d, e, f, g, h}+56n (n is equal to 0, 1,2,... or 7). A value of a is 0, 2, or 4; a value of b is 6, 8, or 10; a value of c is 14, 16, or 18; a value of d is 20, 22, or 24; a value of e is 28, 30, or 32; a value of f is 34, 36 or 38; a g value is 42, 44, or 46; and a value of h is 48, 50, or 52. For example, an index of the first symbol of a candidate SSB may satisfy: {2, 8,16, 22, 30, 36, 44, 50}+56n (n equals 0, 1,2, ..., or 7). When n is equal to 0, in every eight intervals, symbol 2 is an index of the first symbol of a candidate SSB, and symbol 8 may be an index of the first symbol of a candidate SSB. As another example, when n equals 2, an index of the first symbol of a candidate SSB can be 114, which can also be called symbol 2 in every eight slots (i.e., the third symbol in an eight-slot unit). As another example, an index of the first symbol of a candidate SSB may satisfy {2, 10,16, 24, 30, 38, 44, 52}+56n (n equals 0, 1,2, ..., or 7). As another example, an index of the first symbol of a candidate SSB may satisfy {0, 8, 14, 22, 28, 36, 42, 50}+56n (n equals 0, 1,2, ..., or 7). It can be understood that a specific formula described in this document is simply an example, and the examples of specific values ​​from a to h described above are not listed one by one. It can be understood that each expression described herein is illustrated based on repetition in a unit of eight intervals. For example, when a subcarrier spacing of an SSB is 480 kHz, for a system operating in an unlicensed frequency band (or a system operating in a shared frequency band), the length of a DRS window is of 2 ms, there are 112 positions for candidate SSBs, and an index of the first symbol of a candidate SSB (candidate SS / PBCH blocks) meets any of the following conditions: {0, 6}+14n (n is equal to 0, 1,2, ..., 31,40, ... or 63); {0, 8}+14n (n is equal to 0, 1,2, ..., 31,40,... or 63); {0, 10}+14n (n is equal to 0, 1,2, ..., 31, 40, ... or 63); {2, 8}+14n (n is equal to 0, 1,2, ...,31,40,... or 63); {2,10}+14n (n is equal to 0, 1,2, ..., 31,40,... or 63); and {4, 10}+14n (n is equal to 0, 1,2, ..., 31,40, ... or 63). Alternatively, an index to the first symbol of a candidate SSB may satisfy any of the following conditions: {0, 6, 14, 20}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., or 31); {0, 6, 14, 22}+28n (n is equal toO, 1,2, ..., 15, 20, ..., or 31); {0, 6, 14, 24}+28n (n is equal toO, 1,2, ..., 15, 20, ..., or 31); {0, 6, 16, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., or 31); {0, 6, 16, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., or 31); ma / t / zuzz / utmuyo {0, 6, 18, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ...,o31); {0, 8, 14, 20}+28n (n is equal to 0, 1,2, ..., 15, 20, ...,o31); {0, 8,14, 22}+28n (n is equal to 0,1,2,..., 15, 20, ..., or 31); {0, 8,14, 24}+28n (n is equal to 0,1,2,..., 15, 20, ..., or 31); {0, 8, 16, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., or 31); {0, 8, 16, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., or 31); {0, 8,18, 24}+28n (n is equal to 0,1,2,..., 15, 20, ..., or 31); {0,10,14, 20}+28n (n is equal to 0,1,2,.., 15, 20, ..., or 31); {0,10,14, 22}+28n (n is equal to 0,1,2,.., 15, 20, ..., or 31); {0,10,14, 24}+28n (n is equal to 0,1,2,.. , 15, 20, ..., 0 31); {0, 10, 16, 22}+28n (n is equal to 0,1,2, .. , 15, 20, ..., 0 31); {0, 10, 16, 24}+28n (n is equal to 0, 1,2,.. , 15, 20, ..., 0 31); {0, 10, 18, 24}+28n (n is equal to 0, 1,2, .. , 15, 20, ..., or 31); {2, 8, 14, 20}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., or 31); {2, 8, 14, 22}+28n (n is equal to 0, 1,2, 15, 20, ..., or 31); {2, 8, 14, 24}+28n (n is equal to 0, 1,2, 15, 20, ..., or 31); {2, 8, 16, 22}+28n (n is equal to 0, 1,2, 15, 20, ...,o31); {2, 8, 16, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., or 31); {2, 8, 18, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., or 31); {2, 10, 14, 20}+28n (n is equal to 0, 1,2,.. , 15, 20, ..., or 31); {2, 10, 14, 22}+28n (n is equal to 0, 1,2,.., 15, 20, ..., or 31); {2, 10, 14, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., or 31); {2, 10, 16, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., or 31); {2, 10, 16, 24}+28n (n is equal to 0, 1,2,.., 15, 20, ..., or 31); {2, 10, 18, 24}+28n (n is equal to 0, 1,2,.., 15, 20, ..., or 31); {4, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., or 31); {4, 10, 14, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., or 31); {4, 10, 14, 24}+28n (n is equal to 0, 1,2, .., 15, 20, ..., or 31); {4, 10, 16, 22}+28n (n is equal to 0, 1,2,.., 15, 20, ..., or 31); {4, 10, 16, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., or 31); and {4, 10, 18, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., or 31). Alternatively, an index to the first symbol of a candidate SSB (blocks of SS / PBCH candidates) meet any of the following conditions: {a, b, c, d, e, f, g, h}+56n (n is equal to 0, 1,2, 7, 10,... or 15). A value of a is 0, 2, or 4; a value of b is 6, 8, or 10; a value of c is 14, 16, or 18; a value of d is 20, 22, or 24; a value of e is 28, 30, or 32; a value of f is 34, 36 or 38; a value of ΜΛ / t / zuzz / utmuyo g is 42, 44 or 46; and a value of h is 48, 50, or 52. For example, an index of the first symbol of a candidate SSB may satisfy {2, 8,16, 22, 30, 36, 44, 50}+56n (n equals 0, 1,2, ..., 7, 10, ..., or 15). As another example, an index of the first symbol of a candidate SSB may satisfy {2, 10,16, 24, 30, 38, 44, 52}+56n (n equals 0, 1,2, ..., 7 , 10, ..., or 15). As another example, an index of the first symbol of a candidate SSB may satisfy {0, 8, 14, 22, 28, 36, 42, 50}+56n (n equals 0, 1,2, ..., 7 , 10, ..., OR 15). For example, when a subcarrier spacing of an SSB is 480 kHz, for a system operating in an unlicensed frequency band (or a system operating in a shared frequency band), the length of a DRS window is of 2.25 ms, there are 128 positions for candidate SSBs, and an index of the first symbol of a candidate SSB (candidate SS / PBCH blocks) meets the following conditions: {0, 6}+14n (n equals 0, 1,2, ..., 31,40, ... or 71), {0, 8}+14n (n equals 0, 1,2 , ..., 31,40,... or 71); {0, 10}+14n (n is equal to 0, 1,2, ..., 31, 40, ... or 71); {2, 8}+14n (n is equal to 0, 1,2, ...,31,40,... or 71); {2, 10}+14n (n is equal to 0, 1,2, ..., 31,40,... or 71); and {4, 10}+14n (n is equal to 0, 1,2, ..., 31,40, ... or 71). Alternatively, an index to the first symbol of a candidate SSB may satisfy any of the following conditions: ma / t / zuzz / utmuyo {0, 6, 14, 20}+28n (n is equal to 0, 1,2, ... 15, 20, . ., or 35); {0, 6, 14, 22}+28n (n is equal to 0, 1,2, ... 15, 20, . ., or 35); {0, 6, 14, 24}+28n (n is equal to 0, 1,2, ... 15, 20, . ., or 35); {0, 6, 16, 22}+28n (n is equal to 0, 1,2, ... 15, 20, . ., or 35); {0, 6, 16, 24}+28n (n is equal to 0, 1,2, ... 15, 20, . ., or 35); {0, 6, 18, 24}+28n (n is equal to 0, 1,2, ... 15, 20, . ., or 35); {0, 8, 14, 20}+28n (n is equal to 0, 1,2, ... 15, 20, . ., or 35); {0, 8, 14, 22}+28n (n is equal to 0, 1,2, ... 15, 20, . ., or 35); {0, 8, 14, 24}+28n (n is equal to 0, 1,2, ... 15, 20, . ., or 35); {0, 8, 16, 22}+28n (n is equal to 0, 1,2, ... 15, 20, . ., or 35); {0, 8, 16, 24}+28n (n is equal to 0, 1,2, ... 15, 20, . ., or 35); {0, 8, 18, 24}+28n (n is equal to 0, 1,2, ... 15, 20, . ., or 35); {0, 10, 14, 20}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., or 35); {0, 10, 14, 22}+28n (n is equal to 0, 1,2,..., 15, 20, ..., or 35); {0, 10, 14, 24}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., or 35); {0, 10, 16, 22}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., or 35); {0, 10, 16, 24}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., or 35); {0, 10, 18, 24}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., or 35); {2, 8, 14, 20}+28n (n is equal to 0, 1,2, ..., 15, 20, ... {2, 8, 14, 22}+28n (n is equal to 0 , 1,2, ..., 15, 20, ... {2, 8,14, 24}+28n (n is equal to 0,1,2, 15, 20, ... {2, 8, 16, 22}+28n (n is equal to 0,1,2, 15, 20, ... {2, 8, 16, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ... {2, 8, 18, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ... {2,10,14, 20}+ 28n (n is equal to 0,1,2,.. , 15, 20, . {2,10,14, 22}+28n (n is equal to 0,1,2,.. , 15, 20, . {2,10,14, 24}+28n (n is equal to 0,1,2,.. , 15, 20, . {2,10,16, 22}+28n (n is equal to 0,1, 2,.. , 15, 20, . {2, 10, 16, 24}+28n (n is equal to 0,1,2, .. , 15, 20, . {2, 10, 18, 24}+ 28n (n is equal to 0, 1,2,.. , 15, 20, . {4, 10, 14, 20}+28n (n is equal to 0, 1,2, .. , 15, 20, . {4, 10, 14, 22}+28n (n is equal to 0, 1,2,.. , 15, 20, . {4, 10, 14, 24}+28n (n is equal to 0, 1, 2, .. , 15, 20, . {4, 10, 16, 22}+28n (n is equal to 0, 1,2,.. , 15, 20, . {4, 10, 16, 24}+ 28n (n is equal to 0, 1,2, .. , 15, 20, . {4, 10, 18, 24}+28n (n is equal to 0, 1,2,.. , 15, 20, . Alternatively, an index of the first symbol , or 35); , or 35); , or 31); , or 35); , or 35); , or 35); or 35); or 35); or 35); ...,0 35); ...,0 35); .., or 35); .., or 35); .., or 35); .., or 35); .., or 35); .., or 35); and .., or 35). of a candidate SSB (candidate SS / PBCH blocks) meets any of the following conditions: {a, b, c, d, e, f, g, h}+56n (n is equal to 0, 1,2,..., 7, 10,... or 17). A value of a is 0, 2, or 4; a value of b is 6, 8, or 10; a value of c is 14, 16, or 18; a value of d is 20, 22, or 24; a value of e is 28, 30, or 32; a value of f is 34, 36 or 38; a value of ma / t / zuzz / utmuyo g is 42, 44 or 46; and a value of h is 48, 50, or 52. For example, an index of the first symbol of a candidate SSB may satisfy {2, 8, 16, 22, 30, 36, 44, 50}+56n (n equals 0, 1,2, ..., 7, 10, ..., or 17). As another example, an index of the first symbol of a candidate SSB may satisfy {2, 10,16, 24, 30, 38, 44, 52}+56n (n equals 0, 1,2, ..., 7 , 10, ..., or 17). As another example, an index of the first symbol of a candidate SSB may satisfy {0, 8, 14, 22, 28, 36, 42, 50}+56n (n equals 0, 1,2, ..., 7 , 10, ..., or 17). There are 128 positions for candidate SSBs, and the length of a DRS window can be 2.25 ms. For example, a parameter discoveryBurstWindowLength or discoveryBurstWindowLength-r16 or ”discoveryBurstWindowLength-r17' can be used to indicate the length of the DRS window, for example, discoveryBurstWindov / Length-r17 ENUMERATED {ms0dot5, ms1, ms2, ms2dot25, ms3, ms4 , ms5}. For example, when a value of the discoveryBurstWindowLength-r17 parameter is ms2dot25, it may indicate that the duration of the discovery window DRS is 2.25ms. For example, when a subcarrier spacing of an SSB is 480 kHz, for a system operating in an unlicensed frequency band (or a system operating in a shared frequency band), the length of a DRS window is of 3 ms, there are 160 positions for candidate SSBs, and an index of the first symbol of a candidate SSB (candidate SS / PBCH blocks) meets the following conditions: {0, 6}+14n (n is equal to 0.1, 2,..., 31.40,..., 71.80,... or 95); {0, 8}+14n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ... or 95); {0, 10}+14n (n is equal to 0, 1,2, ..., 31, 40, ..., 71,80, ... or 95); {2,8}+14n (n is equal to 0,1,2,..., 31,40,..., 71,80,... or 95); {2,10}+14n (n is equal to 0.1, 2, ..., 31, 40, ..., 71,80, ... or 95); and {4, 10}+14n (n is equal to 0, 1,2, ..., 31, 40, ..., 71,80, ... or 95). Alternatively, an index to the first symbol of a candidate SSB may satisfy any of the following conditions: μλ / t / zuzz / utmuyo {0, 6, 14, 20}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., 35, 40, . ., 0 47); {0, 6, 14, 22}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., 35, 40, . ., or 47); {0, 6, 14, 24}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., 35, 40, . ., or 47); {0, 6, 16, 22}+28n (n is equal to 0, 1,2, . ., 15, 20, ...,35, 40, . ., or 47); {0, 6, 16, 24}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., 35, 40, . ., or 47); {0, 6, 18, 24}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., 35, 40, . ., or 47); {0, 8, 14, 20}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., 35, 40, . ., or 47); {0, 8, 14, 22}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., 35, 40, . ., or 47); {0, 8, 14, 24}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., 35, 40, . ., or 47); {0, 8, 16, 22}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., 35, 40, . ., or 47); {0, 8, 16, 24}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., 35, 40, . ., or 47); {0, 8, 18, 24}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., 35, 40, . ., or 47); {0, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ...,o47); {0, 10, 14, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., or 47); {0, 10, 14, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ...,o47); {0, 10, 16, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., or 47); {0, 10, 16, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., or 47); {0, 10, 18, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., or 47); {2, 8, 14, 20}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., 35, 40, . ., or 47); {2, 8, 14, 22}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., 35, 40, . ., or 47); {2, 8, 14, 24}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., 35, 40, . ., or 47); {2, 8, 16, 22}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., 35, 40, . ., or 47); {2, 8, 16, 24}+28n (n is equal to 0, 1,2, . ., 15, 20, ...,35, 40, . ., or 47); {2, 8, 18, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ...,35, 40, . ·, 0 47); {2, 10, 14, 20}+28n (n is equal to 0,1,2, ..., 15, 20, ...,35, 40, ..., 0 47); {2,10,14, 22}+28n (n is equal to 0,1,2,..., 15, 20, ..., 35, 40, ..., 0 47); {2,10,14, 24}+28n (n is equal to 0,1,2,..., 15, 20, ..., 35, 40, ..., 0 47); {2, 10, 16, 22}+28n (n is equal to 0, 1,2,..., 15, 20, ..., 35, 40, ..., or 47); {2, 10, 16, 24}+28n (n is equal to 0, 1,2,..., 15, 20, ..., 35, 40, ..., 0 47); {2,10,18, 24}+28n (n is equal to 0,1,2,..., 15, 20, ..., 35, 40, ..., 0 47); {4,10,14, 20}+28n (n is equal to 0,1,2,..., 15, 20, ..., 35, 40, ..., 0 47); {4,10,14, 22}+28n (n is equal to 0,1,2,..., 15, 20, ..., 35, 40, ..., 0 47); {4,10,14, 24}+28n (n is equal to 0,1,2,..., 15, 20, ..., 35, 40, ..., 0 47); {4, 10, 16, 22}+28n (n is equal to 0,1,2,..., 15, 20, ...,35, 40, ..., 0 47); {4, 10, 16, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., or 47); and {4, 10, 18, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., 0 47). Alternatively, an index to the first symbol of a candidate SSB (blocks of ma / t / zuzz / utmuyo SS / PBCH candidates) meet any of the following conditions: {a, b, c, d, e, f, g, h}+56n (n is equal to 0, 1,2, 7, 10,17, 20, ..., or 23). A value of a is 0, 2, or 4; a value of b is 6, 8, or 10; a value of c is 14, 16, or 18; a value of d is 20, 22, or 24; a value of e is 28, 30, or 32; a value of f is 34, 36 or 38; a g value is 42, 44, or 46; and a value of h is 48, 50, or 52. For example, an index of the first symbol of a candidate SSB may satisfy {2, 8, 16, 22, 30, 36, 44, 50}+56n (n equals 0, 1,2, ..., 7, 10, ..., 17, 20, ... or 23). As another example, an index of the first symbol of a candidate SSB may satisfy {2, 10,16, 24, 30, 38, 44, 52}+56n (n equals 0, 1,2, ..., 7 , 10, ..., 17, 20, ... or 23). As another example, an index of the first symbol of a candidate SSB may satisfy {0, 8, 14, 22, 28, 36, 42, 50}+56n (n equals 0, 1,2, ..., 7 , 10, ..., 17, 20, ... or 23). For example, when a subcarrier spacing of an SSB is 480 kHz, for a system operating in an unlicensed frequency band (or a system operating in a shared frequency band), the length of a DRS window is of 3.5 ms, there are 192 positions for candidate SSBs, and an index of the first symbol of a candidate SSB (candidate SS / PBCH blocks) meets the following conditions: {0, 6}+14n (n is equal to 0, 1, 2, ..., 31,40, ..., 71,80, ... or 111); {0, 8}+14n (n is equal to 0, 1,2, ..., 31,40, ..., 71, 80, ... or 111); {0, 10}+14n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ... or 111); {2, 8}+14n (n is equal to 0, 1,2,..., 31,40, ..., 71,80, ... or 111); {2, 10}+14n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ... or 111); and {4, 10}+14n (n is equal to 0, 1,2, ..., 31,40, ..., 71, 80, ... 0 111). Alternatively, an index to the first symbol of a candidate SSB may satisfy any of the following conditions: ma / t / zuzz / utmuyo {0, 6, 14, 20}+28n (n is equal to 0, 1,2, ..., 15, 20,. „ 35, 40, . ., or 55); {0, 6, 14, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, . ., 35, 40, . ., or 55); {0, 6, 14, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, . ., 35, 40, . ., 0 55); {0, 6, 16, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, . ., 35, 40, . ., or 55); {0, 6, 16, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, . ., 35, 40, . „ o55); {0, 6, 18, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, . ., 35, 40, . ., 0 55); {0, 8, 14, 20}+28n (n is equal to 0, 1,2, ..., 15, 20, . ., 35, 40, . „ or 55); {0, 8, 14, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, . ., 35, 40, . ., or 55); {0, 8, 14, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, . ., 35, 40, . ., 0 55); {0,8, 16, 22}+28n (n is equal to 0,1,2,..., 15, 20,. „ 35, 40, . ., 0 55); {0, 8, 16, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, . „ 35, 40, . „ o55); {0, 8, 18, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, . „ 35, 40, . ., or 55); {0, 10, 14, 20}+28n (n is equal to 0, 1,2, 15, 20, 35, 40, ..„ or 55); {0, 10, 14, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, 35, 40, ..., or 55); {0, 10, 14, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, 35, 40, ..., or 55); {0, 10, 16, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, ..„ 35, 40, ..., or 55); {0, 10, 16, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ...,o55); {0, 10, 18, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., or 55); {2, 8, 14, 20}+28n (n is equal to 0, 1,2, ..., 15, 20, . ., 35, 40, . ., or 55); {2, 8, 14, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, . ., 35, 40, . ., or 55); {2, 8, 14, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, . ., 35, 40, . ., or 55); {2, 8, 16, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, . ., 35, 40, . ., or 55); {2, 8, 16, 24}+28n (n is equal to 0, 1,2, .... 15, 20, . ., 35, 40, . ., or 55); {2, 8, 18, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, . ., 35, 40, . „ o55); {2, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., or 55); {2, 10, 14, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ...,o55); {2, 10, 14, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., or 55); {2, 10, 16, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., or 55); {2, 10, 16, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., or 55); {2, 10, 18, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ...,o55); {4, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., or 55); {4, 10, 14, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ...,o55); {4, 10, 14, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., or 55); {4, 10, 16, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., or 55); {4, 10, 16, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ...,35, 40, ..., or 55); and {4, 10, 18, 24}+28η (η is equal to 0,1,2, ..., 15, 20,..., 35, 40, ..., ο 55). Alternatively, an index to the first symbol of a candidate SSB (candidate SS / PBCH blocks) meets any of the following conditions: {a, b, c, d, e, f, g, h}+56n (n is equal to 0,1,2,..., 7,10,..., 17, 20,..., or 27). A value of a is 0, 2, or 4; a value of b is 6, 8, or 10; a value of c is 14, 16, or 18; a value of d is 20, 22, or 24; a value of e is 28, 30, or 32; a value of f is 34, 36 or 38; a g value is 42, 44, or 46; and a value of h is 48, 50, or 52. For example, an index of the first symbol of a candidate SSB may satisfy {2, 8,16, 22, 30, 36, 44, 50}+56n (n equals 0, 1,2, ..., 7, 10, ..., 17, 20, ... or 27). As another example, an index of the first symbol of a candidate SSB may satisfy {2, 10,16, 24, 30, 38, 44, 52}+56n (n equals 0, 1,2, ..., 7 , 10, ..., 17, 20, ... or 27). As another example, an index of the first symbol of a candidate SSB may satisfy {0, 8, 14, 22, 28, 36, 42, 50}+56n (n equals 0, 1,2, ..., 7 , 10, ..., 17, 20, ... or 27). There are 192 positions for candidate SSBs, and the length of a DRS window is 3.5 ms. For example, a parameter discoveryBurstWindowLength or discoveryBurstWindowLength-r16 or discoveryBurstWindowLength-r17' can be used to indicate the length of the DRS window, for example, discoveryBurstWindowLength-r17 ENUMERATED {ms0dot5, ms1, ms2, ms3, ms3dot5, ms4, ms5} . For example, when a value of the discoveryBurstW¡ndowLength-r17 parameter is ms3dot5, it may indicate that the duration of the DRS window is 3.5 ms. For example, when a subcarrier spacing of an SSB is 480 kHz, for a system operating in an unlicensed frequency band (or a system operating in a shared frequency band), the length of a DRS window is of 4 ms, there are 208 positions for candidate SSBs, and an index of the first symbol of a candidate SSB (candidate SS / PBCH blocks) meets any of the following conditions: {0, 6}+14n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 111, 120, ..., or 127); {0, 8}+14n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 111, 120, ..., or 127); {0, 10}+14n (n is equal to 0, 1,2, ...,31,40, ..., 71,80, ..., 111,120, ..., or 127); {2, 8}+14n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 111, 120, ..., or 127); {2, 10}+14n (n is equal to 0, 1,2, ...,31,40, ..., 71,80, ..., 111,120, ..., or 127); {4, 10}+14n (n is equal to 0, 1,2, ...,31,40, ..., 71,80, ..., 111,120, ..., or 127); {0, 6, 14, 20}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., 55, 60, ..., o63); {0, 6, 14, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., 55, 60, ..., o63); {0, 6, 14, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., 55, 60, ..., o63); {0, 6, 16, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., 55, 60, ..., o63); {0, 6, 16, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., 55, 60,..., or 63); ma / t / zuzz / utmuyo {0, 6, 18, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ...,35, 40, ..., 55, 60,..., 0 63); {0, 8, 14, 20}+28n (n is equal to 0, 1,2, ..., 15, 20, ...,35, 40, ..., 55, 60,..., 0 63); {0, 8,14, 22}+28n (n is equal to 0,1,2,..., 15, 20, ..., 35, 40, ..., 55, 60, ..., or 63); {0, 8,14, 24}+28n (n is equal to 0,1,2,..., 15, 20, ..., 35, 40, ..., 55, 60, ..., or 63); {0, 8, 16, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., 55, 60, ..., or 63); {0, 8, 16, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., 55, 60, ..., or 63); {0, 8,18, 24}+28n (n is equal to 0,1,2,..., 15, 20, ..., 35, 40, ..., 55, 60, ..., or 63); {0,10,14, 20}+28n (n is equal to 0,1,2,.. , 15, 20, ..., 35, 40, .. , 55, 60, ...,0 63 ); {0,10,14, 22}+28n (n is equal to 0,1,2,.. , 15, 20, ..., 35, 40, .. , 55, 60, ...,0 63 ); {0,10,14, 24}+28n (n is equal to 0,1,2,.. , 15, 20, ..., 35, 40, .. ,55, 60, ...,0 63 ); {0, 10, 16, 22}+28n (n is equal to 0,1,2, .. , 15, 20, ...,35, 40, .. ,55, 60, ...,o63) ; {0, 10, 16, 24}+28n (n is equal to 0, 1,2,.. , 15, 20, ..., 35, 40, .. ,55, 60, ...,o63) ; {0, 10, 18, 24}+28n (n is equal to 0, 1,2, .. , 15, 20, ..., 35, 40, .. , 55, 60, ...,o63) ; {2, 8, 14, 20}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., 55, 60, ..., or 63); {2, 8, 14, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., 55, 60, ..., or 63); {2, 8, 14, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., 55, 60, ..., or 63); {2, 8, 16, 22}+28n (n is equal to 0, 1,2, ..., 15, 20, ...,35, 40, ..., 55, 60, ..., or 63); {2, 8, 16, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., 55, 60, ..., or 63); {2, 8, 18, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., 55, 60, ..., or 63); {2, 10, 14, 20}+28n (n is equal to 0, 1,2,.. , 15, 20, ..., 35, 40, .. , 55, 60, ...,o63) ; {2, 10, 14, 22}+28n (n is equal to 0, 1,2,.. , 15, 20, ..., 35, 40, .. , 55, 60, ...,o63) ; {2, 10, 14, 24}+28n (n is equal to 0, 1,2, .. , 15, 20, ..., 35, 40, .. , 55, 60, ...,o63) ; {2, 10, 16, 22}+28n (n is equal to 0, 1,2, .. , 15, 20, ..., 35, 40, .. ,55, 60, ...,o63) ; {2, 10, 16, 24}+28n (n is equal to 0, 1,2,.. , 15, 20, ..., 35, 40, .. ,55, 60, ...,o63) ; {2, 10, 18, 24}+28n (n is equal to 0, 1,2,.. , 15, 20, ..., 35, 40, .. , 55, 60, ...,o63) ; {4, 10, 14, 20}+28n (n is equal to 0, 1,2, .. , 15, 20, ..., 35, 40, .. , 55, 60, ...,o63) ; {4, 10, 14, 22}+28n (n is equal to 0, 1,2, .. , 15, 20, ..., 35, 40, .. , 55, 60, ...,o63) ; {4, 10, 14, 24}+28n (n is equal to 0, 1,2, .. , 15, 20, ..., 35, 40, .. , 55, 60, ...,o63) ; {4, 10, 16, 22}+28n (n is equal to 0, 1,2,.. , 15, 20, ..., 35, 40, .. ,55, 60, ...,o63) ; {4, 10, 16, 24}+28n (n is equal to 0, 1,2, .. , 15, 20, ..., 35, 40, .. ,55, 60, ...,o63) ;and {4, 10, 18, 24}+28n (n is equal to 0, 1,2, .. , 15, 20, ..., 35, 40, .. ,55, 60, ..., o63). Alternatively, an index to the first symbol of a candidate SSB (blocks of SS / PBCH candidates) meet any of the following conditions: {a, b, c, d, e, f, g, h}+56n (n is equal to 0, 1,2, ..., 7, 10,..., 17, 20, ..., 27, 30 or 31). A value of a is 0, 2, or 4; a value of b is 6, 8, or 10; a value of c is 14, 16, or 18; a value of d is 20, 22, or 24; a value of e is 28, 30, or 32; a value of f is 34, 36 or 38; a value of ma / t / zuzz / utmuyo g is 42, 44, or 46; and a value of h is 48, 50, or 52. For example, an index of the first symbol of a candidate SSB may satisfy {2, 8,16, 22, 30, 36, 44, 50}+56n (n equals 0, 1,2, ..., 7, 10, ..., 17, 20, ..., 27, 30 or 31). As another example, an index of the first symbol of a candidate SSB may satisfy {2, 10,16, 24, 30, 38, 44, 52}+56n (n equals 0, 1,2, ..., 7 , 10, ..., 17, 20, ..., 27, 30 or 31). As another example, an index of the first symbol of a candidate SSB may satisfy {0, 8, 14, 22, 28, 36, 42, 50}+56n (n equals 0, 1,2, ..., 7 , 10, ..., 17, 20, ..., 27, 30 OR 31). For example, when a subcarrier spacing of an SSB is 480 kHz, for a system operating in an unlicensed frequency band (or a system operating in a shared frequency band), the length of a DRS window is of 5 ms, there are 256 positions for candidate SSBs, and an index of the first symbol of a candidate SSB (candidate SS / PBCH blocks) meets any of the following conditions: {0, 6}+14n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 111, 120, ..., or 151); {0, 8}+14n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 111, 120, ..., or 151); {0, 10}+14n (n is equal to 0, 1,2, ...,31,40, ..., 71,80, ..., 111,120, ..., or 151); {2, 8}+14n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 111, 120, ..., or 151); ma / t / zuzz / utmuyo {2, 10}+14n (n is equal to 0, 1,2, ...,31,40, ..., 71,80, ..., 111,120, ... , or 151); {4, 10}+14n (n is equal to 0, 1,2, ...,31,40, ..., 71,80, ..., 111,120, ..., or 151); {0, 6, 14, 20}+28n (n is equal toO, 1,2, ... 15, 20, . ., 35, 40, . ., 55, 60, . ., or 75); {0, 6, 14, 22}+28n (n is equal toO, 1,2, ... 15, 20, . ., 35, 40, . ., 55, 60, . or 75); {0, 6, 14, 24}+28n (n is equal toO, 1,2, ... 15, 20, . ., 35, 40, . ., 55, 60, . or 75); {0, 6, 16, 22}+28n (n is equal toO, 1,2, ... 15, 20, . ., 35, 40, . ., 55, 60, . or 75); {0, 6, 16, 24}+28n (n is equal toO, 1,2, ... 15, 20, . ., 35, 40, . ., 55, 60, . ., or 75); {0, 6, 18, 24}+28n (n is equal toO, 1,2, ... 15, 20, . ., 35, 40, . ., 55, 60, . ., or 75); {0, 8, 14, 20}+28n (n is equal toO, 1,2, ... 15, 20, . ., 35, 40, . ., 55, 60, . ., or 75); {0, 8, 14, 22}+28n (n is equal toO, 1,2, ... 15, 20, . ., 35, 40, . ., 55, 60, . ., or 75); {0, 8, 14, 24}+28n (n is equal toO, 1,2, ... 15, 20, . ., 35, 40, . ., 55, 60, . or 75); {0, 8, 16, 22}+28n (n is equal toO, 1,2, ... 15, 20, . ., 35, 40, . ., 55, 60, . or 75); {0, 8, 16, 24}+28n (n is equal toO, 1,2, ... 15, 20, . ., 35, 40, . ., 55, 60, . .,0 75); {0, 8, 18, 24}+28n (n is equal toO, 1,2, ... 15, 20, . ., 35, 40, . ., 55, 60, . or 75); {0, 10, 14, 20}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., 35, 40, ..., 55, 60, ...,o75 ) {0, 10, 14, 22}+28n (n is equal to 0, 1,2,..., 15, 20, ..., 35, 40, ..., 55, 60, ..., o75) {0, 10, 14, 24}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., 35, 40, ..., 55, 60, ... ,o75) {0, 10, 16, 22}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., 35, 40, ..., 55, 60, .. .,o75) {0, 10, 16, 24}+28n (n is equal to 0, 1,2, . ., 15, 20, ..., 35, 40, ..., 55, 60, . ...,o75) {0, 10, 18, 24}+28n (n is equal to 0, 1,2, . ., 15, 20, ...,35, 40, ..., 55, 60, ...,o75) {2, 8, 14, 20}+28n (n is equal to 0, 1,2, ..., {2, 8, 14, 22}+28n (n is equal to 0, 1,2, .. ., {2, 8,14, 24}+28n (n is equal to 0,1,2,..., {2, 8,16, 22}+28n (n is equal to 0,1,2, ..., {2, 8, 16, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ...,35, 40, . 15, 20, ... ,35, 40, .15, 20, ..., 35, 40, .15, 20, ..., 35, 40, .15, 20, ..., 35, 40, ..., 55, 60 , . ., 55, 60, . ., 55, 60, . ., 55, 60, . ., 55, 60, . ., 0 75); .,0 75); or 75); -,o75) ; -, or 75); {2, 8, 18, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, . ., 55, 60, . -, or 75 ); {2,10,14, 20}+28n (n is equal to 0,1,2,.. , 15, 20, ..., 35, 40, ..., 55, 60, ...,o75 ); {2,10,14, 22}+28n (n is equal to 0,1,2,.. , 15, 20, ..., 35, 40, ..., 55, 60, ..., or 75); {2,10,14, 24}+28n (n is equal to 0,1,2,.. , 15, 20, ..., 35, 40, ..., 55, 60, ...,o75 ); {2,10,16, 22}+28n (n is equal to 0,1,2,.. , 15, 20, ..., 35, 40, ..., 55, 60, ..., or 75); {2, 10, 16, 24}+28n (n is equal to 0,1,2, .. , 15, 20, ...,35, 40, ..., 55, 60, ...,o75 ); {2, 10, 18, 24}+28n (n is equal to 0, 1,2,.. , 15, 20, ..., 35, 40, ..., 55, 60, ...,o75 ); {4, 10, 14, 20}+28n (n is equal to 0, 1,2, .. , 15, 20, ..., 35, 40, ..., 55, 60, ...,o75 ); {4, 10, 14, 22}+28n (n is equal to 0, 1,2,.. , 15, 20, ..., 35, 40, ..., 55, 60, ...,o75 ); {4, 10, 14, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ..., 35, 40, ..., 55, 60, ..., or 75); {4, 10, 16, 22}+28n (n is equal to 0, 1,2,.. , 15, 20, ..., 35, 40, ..., 55, 60, ...,o75 ); {4, 10, 16, 24}+28n (n is equal to 0, 1,2, ..., 15, 20, ...,35, 40, ..., 55, 60, ..., or 75); and {4, 10, 18, 24}+28n (n is equal to 0, 1,2,.. , 15, 20, ..., 35, 40, ..., 55, 60, ..., o75). Alternatively, an index of the first symbol of a candidate SSB (candidate SS / PBCH blocks) satisfies any of the following conditions: {a, b, c, d, e, f, g, h}+56n (n equals to 0, 1, 2, ..., 7, 10, ..., 17, 20, ..., 27, 30, ..., 37). A value of a is 0, 2, or 4; a value of b is 6, 8, or 10; a value of c is 14, 16, or 18; a ma / t / zuzz / utmuyo value of d is 20, 22 or 24; a value of e is 28, 30, or 32; a value of f is 34, 36 or 38; a g value is 42, 44, or 46; and a value of h is 48, 50, or 52. For example, an index of the first symbol of a candidate SSB may satisfy {2, 8, 16, 22, 30, 36, 44, 50}+56n (n equals 0, 1,2, ..., 7, 10, ..., 17, 20, ..., 27, 30, ..., 37). As another example, an index of the first symbol of a candidate SSB may satisfy {2, 10,16, 24, 30, 38, 44, 52}+56n (n equals 0, 1,2, ..., 7 , 10, ..., 17, 20, ..., 27, 30, ..., 37). As another example, an index of the first symbol of a candidate SSB may satisfy {0, 8, 14, 22, 28, 36, 42, 50}+56n (n equals 0, 1,2, ..., 7 , 10, ..., 17, 20, ..., 27, 30, ..., 37). For example, when a subcarrier spacing of an SSB is 960 kHz, for a system operating in an unlicensed frequency band (or a system operating in a shared frequency band), the length of a DRS window is of 1 ms, there are 128 positions for candidate SSBs, and an index of the first symbol of a candidate SSB (candidate SS / PBCH blocks) meets any of the following conditions: {0, 6}+14n (n is equal to 0, 1,2,..., or 63); {0, 8}+14η (η is equal to 0,1,2,..., or 63); {0, 10}+14n (n is equal to 0,1,2,or 63); {2, 8}+14n (n is equal to 0,1,2,or 63); {2,10}+14n (n is equal to 0,1,2,or 63); {4, 10}+14n (n is equal to 0, 1,2, or 63); μλ / t / zuzz / utmuyo {0, 6, 14, 20}+28n (n is equal to 0, 1,2, ..., or 31); {0, 6,14, 22}+28n (n is equal to 0,1,2, ...,o31); {0, 6,14, 24}+28n (n is equal to 0,1,2, ...,o31); {0, 6,16, 22}+28n (n is equal to 0,1,2, ...,o31); {0, 6,16, 24}+28n (n is equal to 0,1,2,..., or 31); {0, 6, 18, 24}+28n (n is equal to 0,1,2,..., or 31); {0, 8, 14, 20}+28n (n is equal to 0, 1,2, ..., or 31); {0,8, 14, 22}+28n (n is equal to 0, 1,2, ...,o31); {0,8, 14, 24}+28n (n is equal to 0, 1,2, ...,o31); {0.8, 16, 22}+28n (n is equal to 0, 1.2, ..., or 31); {0,8, 16, 24}+28n (n is equal to 0, 1,2, ...,o31); {0, 8, 18, 24}+28n (n is equal toO, 1,2, ..., or 31); {0, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., or 31); {0, 10, 14, 22}+28n (n is equal to 0, 1,2, ..., or 31); {0, 10, 14, 24}+28n (n is equal to 0, 1,2, ..., or 31); {0, 10, 16, 22}+28n (n is equal toO, 1,2, ..., or 31); {0, 10, 16, 24}+28n (n is equal toO, 1,2, ..., or 31); {0, 10, 18, 24}+28n (n is equal toO, 1,2, ..., or 31); {2, 8, 14, 20}+28n (n is equal to 0, 1,2, .... or 31); {2, 8, 14, 22}+28n (n is equal to 0, 1,2, ..., or 31); {2, 8, 14, 24}+28n (n is equal toO, 1,2, ..., or 31); {2,8, 16, 22}+28n (n is equal to 0, 1,2, ...,o31); {2,8, 16, 24}+28n (n is equal to 0, 1,2, ..., or 31); {2,8, 18, 24}+28n (n is equal to 0, 1,2, ..., or 31); {2, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., or 31); {2, 10, 14, 22}+28n (n is equal to 0, 1,2, ..., or 31); {2, 10, 14, 24}+28n (n is equal to 0, 1,2, ..., or 31); {2, 10, 16, 22}+28n (n is equal toO, 1,2, ..., or 31); {2, 10, 16, 24}+28n (n is equal toO, 1,2, ..., or 31); {2, 10, 18, 24}+28n (n is equal to 0, 1,2, ..., or 31); {4, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., or 31); {4, 10, 14, 22}+28η (η is equal to 0,1,2, ..., or 31); {4, 10, 14, 24}+28η (η is equal to 0,1,2, ..., or 31); {4,10,16, 22}+28η (η is equal to 0,1,2,..., or 31); {4, 10, 16, 24}+28n (n is equal to 0, 1,2, ..., or 31); and {4, 10, 18, 24}+28n (n is equal to 0, 1,2, ..., or 31). Alternatively, an index to the first symbol of a candidate SSB (candidate SS / PBCH blocks) meets any of the following conditions: {a, b, c, d, e, f, g, h}+56n, (n is equal to 0,1,2,... or 15). A value of a is 0, 2, or 4; a value of b is 6, 8, or 10; a value of c is 14, 16, or 18; a value of d is 20, 22, or 24; a value of e is 28, 30, or 32; a value of f is 34, 36 or 38; a g value is 42, 44, or 46; and a value of h is 48, 50, or 52. For example, an index of the first symbol of a candidate SSB may satisfy {2, 8, 16, 22, 30, 36, 44, 50}+56n (n is equal to 0, 1,2, ..., or 15 ). As another example, an index of the first symbol of a candidate SSB may satisfy {2, 10,16, 24, 30, 38, 44, 52}+56n (n equals 0, 1,2, ..., or fifteen). As another example, an index of the first symbol of a candidate SSB may satisfy {0, 8, 14, 22, 28, 36, 42, 50}+56n (n equals 0, 1,2, ..., or fifteen). For example, when a subcarrier spacing of an SSB is 960 kHz, for a system operating in an unlicensed frequency band (or a system operating in a shared frequency band), the length of a DRS window is of 2 ms, there are 224 positions for candidate SSBs, and an index of the first symbol of a candidate SSB (candidate SS / PBCH blocks) meets any of the following conditions: {0, 6}+14n (n is equal to 0, 1,2,..., 63, 80, ..., or 127); {0, 8}+14n (n is equal to 0, 1,2, ..., 63, 80, ..., or 127); {0, 10}+14n (n is equal to 0, 1,2, ...,63,80, ..., or 127); {2, 8}+14n (n is equal to 0, 1,2,..., 63, 80, ..., or 127); {2, 10}+14n (n is equal to 0, 1,2, ...,63,80, ..., or 127); and {4, 10}+14n (n is equal to 0, 1,2, ...,63,80, ..., or 127). Alternatively, an index of the first symbol of a candidate SSB may satisfy ma / t / zuzz / utmuyor any of the following conditions: {0, 6, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 63); {0, 6, 14, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 63); {0, 6, 14, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 63); {0, 6, 16, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 63); {0, 6, 16, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 63); {0, 6, 18, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 63); {0, 8, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ...,o63); {0, 8, 14, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ...,o63); {0, 8,14, 24}+28n (n is equal to 0,1,2,..., 31,40, ..., or 63); {0, 8,16, 22}+28n (n is equal to 0,1,2,..., 31,40, ..., or 63); {0, 8, 16, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 63); {0, 8, 18, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 63); {0,10,14, 20}+28n (n is equal to 0,1,2,..., 31,40, ..., or 63); {0,10,14, 22}+28n (n is equal to 0,1,2,..., 31,40, ..., or 63); {0,10,14, 24}+28n (n is equal to 0,1,2,..., 31,40, ..., or 63); {0,10,16, 22}+28n (n is equal to 0,1,2,..., 31,40, ..., or 63); {0, 10, 16, 24}+28n (n is equal to 0,1,2, .. „31,40, ..., 0 63); {0, 10, 18, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 63); {2, 8, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 63); {2, 8, 14, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 63); {2, 8, 14, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 63); {2, 8, 16, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 63); {2, 8, 16, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ,.„o63); {2, 8, 18, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 63); {2, 10, 14, 20}+28n (n is equal to 0, 1,2,..., 31,40, ..., or 63); {2, 10, 14, 22}+28n (n is equal to 0, 1,2,..., 31,40, ..., or 63); {2, 10, 14, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 63); {2, 10, 16, 22}+28n (n is equal to 0, 1,2,..., 31,40, ..., or 63); {2, 10, 16, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 63); {2, 10, 18, 24}+28n (n is equal to 0, 1,2,..., 31,40, ..., or 63); {4, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 63); {4, 10, 14, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 63); {4, 10, 14, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 63); {4, 10, 16, 22}+28n (n is equal to 0, 1,2,..., 31,40, ..., or 63); {4, 10, 16, 24}+28n (n is equal to 0, 1,2, .. „31,40, o63); and {4, 10, 18, 24}+28n (n is equal to 0 , 1,2, ..., 31,40, ..., or 63). Alternatively, an index to the first symbol of a candidate SSB (blocks of SS / PBCH candidates) meet any of the following conditions: {a, b, c, d, e, f, g, h}+56n (n is equal to 0, 1,2, 15, 20, ... or 31). A value of a is 0, 2, or 4; a value of b is 6, 8, or 10; a value of c is 14, 16, or 18; a value of d is 20, 22, or 24; a value of e is 28, 30, or 32; a value of f is 34, 36 or 38; a g value is 42, 44, or 46; and a value of h is 48, 50, or 52. ma / t / zuzz / utmuyo For example, an index of the first symbol of a candidate SSB may satisfy {2, 8,16, 22, 30, 36, 44, 50}+56n (n equals 0,1,2,..., 15, 20,..., or 31). As another example, an index of the first symbol of a candidate SSB may satisfy: {2, 10, 16, 24, 30, 38, 44, 52}+56n (n equals 0, 1,2, ..., 15, 20, ..., or 31). As another example, an index of the first symbol of a candidate SSB can satisfy: {0, 8, 14, 22, 28, 36, 42, 50}+56n (n equals 0, 1,2, ..., 15, 20, ..., or 31). For example, when a subcarrier spacing of an SSB is 960 kHz, for a system operating in an unlicensed frequency band (or a system operating in a shared frequency band), the length of a DRS window is of 2.25 ms, there are 256 positions for candidate SSBs, and an index of the first symbol of a candidate SSB (candidate SS / PBCH blocks) meets any of the following conditions: ma / t / zuzz / utmuyo {0, 6}+14n (n is equal to 0, 1,2,..., 63, 80, ..., or 143); {0, 8}+14n (n is equal to 0, 1,2,..., 63, 80, ..., or 143); {0, 10}+14n (n is equal to 0, 1,2, ...,63,80, ..., or 143); {2, 8}+14n (n is equal to 0, 1,2,..., 63, 80, ..., or 143); {2, 10}+14n (n is equal to 0, 1,2, ...,63,80, ..., or 143); {4, 10}+14n (n is equal to 0, 1,2, ..., 63, 80, ..., or 143); {0, 6, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., o71); {0, 6, 14, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., o71); {0, 6, 14, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., o71); {0, 6, 16, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., o71); {0, 6, 16, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., o71); {0, 6, 18, 24}+28n (n is equal toO, 1,2, ..., 31,40, ..., or 71); {0, 8, 14, 20}+28n (n is equal to 0, 1,2, .... 31,40, ..., o71); {0, 8, 14, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., o71); {0, 8, 14, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., o71); {0, 8, 16, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., o71); {0, 8, 16, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., o71); {0, 8, 18, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., o71); {0, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 71); {0, 10, 14, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 71); {0, 10, 14, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 71); {0, 10, 16, 22}+28n (n is equal toO, 1,2, ..., 31,40, ..., or 71); {0, 10, 16, 24}+28n (n is equal toO, 1,2, ..., 31,40, ..., or 71); {0, 10, 18, 24}+28n (n is equal toO, 1,2, ..., 31,40, ..., or 71); {2, 8, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 71); {2, 8, 14, 22}+28n (n is equal to 0, 1,2, . ., 31,40, . .,071); {2, 8, 14, 24}+28n (n is equal to 0, 1,2, . ., 31,40, . .,071); {2, 8,16, 22}+28n (n is equal to 0,1,2,. ., 31,40, . ·, or 71); {2, 8,16, 24}+28n (n is equal to 0,1,2,. ., 31,40, . .,071); {2, 8, 18, 24}+28n (n is equal to 0, 1,2, . ., 31,40, . ., or 71); {2, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 71); {2,10,14, 22}+28n (n is equal to 0,1,2,..., 31,40,..., or 71); {2,10,14, 24}+28n (n is equal to 0,1,2,..., 31,40,..., or 71); {2,10,16, 22}+28n (n is equal to 0,1,2,..., 31,40,..., or 71); {2,10,16, 24}+28n (n is equal to 0,1,2,..., 31,40,..., or 71); {2, 10, 18, 24}+28n (n is equal to 0,1,2, ...,31,40, ..., 0 71); {4, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 71); {4, 10, 14, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 71); {4, 10, 14, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 71); {4, 10, 16, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., or 71); {4, 10, 16, 24}+28n (n is equal to 0, 1,2, ..., 31,40, .... or 71); and {4, 10, 18, 24}+28n (n is equal to 0, 1,2, ...,31,40, ..., or 71). Alternatively, an index to the first symbol of a candidate SSB (blocks of ma / t / zuzz / utmuyo SS / PBCH candidates) meet any of the following conditions: {a, b, c, d, e, f, g, h}+56n (n is equal to 0, 1,2, 15, 20, ... or 35). A value of a is 0, 2, or 4; a value of b is 6, 8, or 10; a value of c is 14, 16, or 18; a value of d is 20, 22, or 24; a value of e is 28, 30, or 32; a value of f is 34, 36 or 38; a g value is 42, 44, or 46; and a value of h is 48, 50, or 52. For example, an index of the first symbol of a candidate SSB may satisfy {2, 8, 16, 22, 30, 36, 44, 50}+56n (n equals 0, 1,2, ..., 15, 20, ..., or 35). As another example, an index of the first symbol of a candidate SSB may satisfy {2, 10,16, 24, 30, 38, 44, 52}+56n (n equals 0, 1,2, ..., 15 , 20, ..., or 35). As another example, an index of the first symbol of a candidate SSB may satisfy {0, 8, 14, 22, 28, 36, 42, 50}+56n (n equals 0, 1,2, ..., 15 , 20, ..., or 35). There are 256 positions for candidate SSBs, and the length of a DRS window is 2.25 ms. For example, a discoveryBurstWindowLength or discoveryBurstWindowLength-rlff1or discoveryBurstWindowLength-r17' parameter can be used to indicate the length of the DRS window, for example, discoveryBurstWindowl_ength-r17 ENUMERATED {ms0dot5, ms1, ms2, ms2dot25, ms3, ms4, ms5}. For example, when a value of the discoveryBurstWindowLength-r17 parameter is ms2dot25, it may indicate that the DRS window length is 2.25 ms. For example, when a subcarrier spacing of an SSB is 960 kHz, there are 320 positions for candidate SSBs, and the length of a DRS window is 3 ms. For a system operating in an unlicensed frequency band (or a system operating in a shared frequency band), an index of the first symbol of a candidate SSB (candidate SS / PBCH ma / t / zuzz / utmuyo blocks) meets any of the following conditions: {0, 6}+14n (n is equal to 0, 1,2,..., 63, 80, ..., 143, 160,..., or 191); {0, 8}+14n (n is equal to 0, 1,2, ..., 63, 80, ..., 143, 160, ..., or 191); {0, 10}+14n (n is equal to 0, 1,2, ..., 63, 80, ..., 143, 160, ..., or 191); {2, 8}+14n (n is equal to 0, 1,2, ..., 63, 80, ..., 143, 160, ..., or 191); {2, 10}+14n (n is equal to 0, 1,2, ..., 63, 80, ..., 143, 160, ..., or 191); {4, 10}+14n (n is equal to 0,1,2,..., 63, 80,..., 143,160, ..., or 191); {0, 6, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {0, 6, 14, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {0, 6, 14, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {0, 6, 16, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {0, 6, 16, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {0, 6, 18, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {0, 8, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {0, 8, 14, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {0, 8, 14, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {0, 8, 16, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {0, 8, 16, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {0, 8, 18, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {0, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {0, 10, 14, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {0, 10, 14, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {0, 10, 16, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {0, 10, 16, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {0, 10, 18, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {2, 8, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {2, 8, 14, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {2, 8, 14, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {2, 8, 16, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {2, 8, 16, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {2, 8, 18, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., o95); {2, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., or 95); {2, 10, 14, 22}+28n (n is equal to 0,1,2, ..., 31,40, ..., 71,80, ..., 0 95); {2, 10, 14, 24}+28n (n is equal to 0,1,2, ..., 31,40, ..., 71,80, ..., 0 95); {2,10,16, 22}+28n (n is equal to 0,1,2,..., 31,40, ..., 71,80, ..., 0 95); {2,10,16, 24}+28n (n is equal to 0,1,2,..., 31,40, ..., 71,80, ..., 0 95); {2, 10, 18, 24}+28n (n is equal to 0, 1,2,..., 31,40, ..., 71,80, ..., or 95); {4, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., or 95); {4,10,14, 22}+28n (n is equal to 0,1,2,..., 31,40, ..., 71,80, ..., 0 95); {4,10,14, 24}+28n (n is equal to 0,1,2,..., 31,40, ..., 71,80, ..., 0 95); {4,10,16, 22}+28n (n is equal to 0,1,2,..., 31,40, ..., 71,80, ..., 0 95); {4,10,16, 24}+28n (n is equal to 0,1,2,..., 31,40, ..., 71,80, ..., or 95); and {4, 10, 18, 24}+28n (n is equal to 0,1,2, ..., 31,40, ..., 71,80, ..., 0 95). Alternatively, an index to the first symbol of a candidate SSB (blocks of SS / PBCH candidates) meet any of the following conditions: {a, b, c, d, e, f, g, h}+56n (n is equal to 0, 1,2, 15, 20, ..., 35, 40,..., or 47). A value of a is 0, 2, or 4; a value of b is 6, 8, or 10; a value of c is 14, 16, or 18; a value of d is 20, 22, or 24; a value of e is 28, 30, or 32; a value of f is 34, 36 or 38; a g value is 42, 44, or 46; and a value of h is 48, 50, or 52. For example, an index of the first symbol of a candidate SSB may satisfy {2, 8, 16, 22, 30, 36, 44, 50}+56n (n equals 0, 1,2, ..., 15, 20, ..., 35, 40, ... or 47). As another example, an index of the first symbol of a candidate SSB may satisfy {2, 10,16, 24, 30, 38, 44, 52}+56n (n equals 0, 1,2, ..., 15 , 20, ..., 35, 40, ... or 47). As another example, an index of the first symbol of a candidate SSB may satisfy {0, 8, 14, 22, 28, 36, 42, 50}+56n (n equals 0, 1,2, ..., 15 , 20, ..., 35, 40, ... or 47). For example, when a subcarrier spacing of an SSB is 960 kHz, there are 384 positions for candidate SSBs, and the length of a DRS window is 3.5 ms. For a system operating in an unlicensed frequency band (or a system operating in a shared frequency band), an index of the first symbol of a candidate SSB (candidate SS / PBCH blocks) meets any of the following conditions: {0, 6}+14n (n is equal to 0, 1,2, ..., 63, 80, ..., 143, 160, ..., or 223); {0, 8}+14n (n is equal to 0, 1,2, ..., 63, 80, ..., 143, 160, ..., or 223); {0, 10}+14n (n is equal to 0, 1,2, ...,63,80, ..., 143, 160, ..., or 223); {2, 8}+14n (n is equal to 0, 1,2, ..., 63, 80, ..., 143, 160, ..., or 223); {2, 10}+14n (n is equal to 0, 1,2, ...,63,80, ..., 143, 160, ..., or 223); {4, io}+14n (n is equal to 0, 1,2, ...,63,80, ..., 143, 160, ..., or 223); {0, 6, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., or 111); {0, 6, 14, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., or 111); {0, 6, 14, 24}+28η (η is equal to 0, 1,2, ..., 31,40,..., 71,80,..., ο 111); {0, 6, 16, 22}+28η (η is equal to 0, 1,2, ..., 31,40,..., 71,80,..., ο 111); {0, 6, 16, 24}+28η (η is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 0 111); {0, 6, 18, 24}+28η (η is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 0 111); {0, 8, 14, 20}+28η (η is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., ο 111); {0, 8, 14, 22}+28η (η is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., ο 111); {0, 8, 14, 24}+28η (η is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 0 111); {0, 8, 16, 22}+28η (η is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 0 111); {0, 8, 16, 24}+28η (η is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 0 111); {0, 8, 18, 24}+28η (η is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 0 111); {0, 10, 14, 20}+28η (η is equal to 0,1,2, ..., 31,40,..., 71,80, ..., ο 111); {0, 10, 14, 22}+28η (η is equal to0, 1,2, ..., 31,40, ..., 71,80, ..., ο111); {0, 10, 14, 24}+28η (η is equal to0, 1,2, ..., 31,40, ..., 71,80, ..., ο111); {0, 10, 16, 22}+28η (η is equal toO, 1,2, ..., 31,40, ..., 71,80, ..., ο111); {0, 10, 16, 24}+28η (η is equal toO, 1,2, ..., 31,40, ..., 71,80, ..., ο111); {0, 10, 18, 24}+28η (η is equal toO, 1,2, ..., 31,40, ..., 71,80, ..., ο111); {2, 8, 14, 20}+28η (η is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., ο 111); {2, 8, 14, 22}+28η (η is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., ο 111); {2, 8, 14, 24}+28η (η is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., ο 111); {2, 8, 16, 22}+28η (η is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., ο 111); {2, 8, 16, 24}+28η (η is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., ο 111); {2, 8, 18, 24}+28η (η is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., ο 111); {2, 10, 14, 20}+28η (η is equal toO, 1,2, ..., 31,40, ..., 71,80, ..., ο111); {2, 10, 14, 22}+28η (η is equal toO, 1,2, ..., 31,40, ..., 71,80, ..., ο111); {2, 10, 14, 24}+28η (η is equal toO, 1,2, ..., 31,40, ..., 71,80, ..., ο111); {2, 10, 16, 22}+28η (η is equal toO, 1,2, ..., 31,40, ..., 71,80, ..., ο111); {2, 10, 16, 24}+28η (η is equal toO, 1,2, ..., 31,40, ..., 71,80, ..., ο111); {2, 10, 18, 24}+28η (η is equal toO, 1,2, ..., 31,40, ..., 71,80, ..., ο111); {4, 10, 14, 20}+28η (η is equal toO, 1,2, ..., 31,40, ..., 71,80, ..., ο111); {4, 10, 14, 22}+28η (η is equal toO, 1,2, ..., 31,40, ..., 71,80, ..., ο111); {4, 10, 14, 24}+28η (η is equal toO, 1,2, ..., 31,40, ..., 71,80, ..., ο111); {4, 10, 16, 22}+28η (η is equal toO, 1,2, ..., 31,40, ..., 71,80, ..., ο111); {4, 10, 16, 24}+28η (η is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., ο 111); and {4, 10, 18, 24}+28η (η is equal toO, 1,2, ..., 31,40, ..., 71,80, ..., ο111). Alternatively, an index to the first symbol of a candidate SSB (candidate SS / PBCH blocks) meets any of the following conditions: ma / t / zuzz / utmuyo {a, b, c, d, e, f, g, h}+56n (n is equal to 0, 1,2,15, 20,35, 40,..., or 55). A value of a is 0, 2, or 4; a value of b is 6, 8, or 10; a value of c is 14, 16, or 18; a value of d is 20, 22, or 24; a value of e is 28, 30, or 32; a value of f is 34, 36 or 38; a g value is 42, 44, or 46; and a value of h is 48, 50, or 52. For example, an index of the first symbol of a candidate SSB may satisfy {2, 8, 16, 22, 30, 36, 44, 50}+56n (n equals 0, 1,2, ..., 15, 20, ..., 35, 40, ... or 55). As another example, an index of the first symbol of a candidate SSB may satisfy {2, 10,16, 24, 30, 38, 44, 52}+56n (n equals 0, 1,2, ..., 15 , 20, ..., 35, 40, ..., OR 55). As another example, an index of the first symbol of a candidate SSB may satisfy {0, 8, 14, 22, 28, 36, 42, 50}+56n (n equals 0, 1,2, ..., 15 , 20, ..., 35, 40, ..., OR 55). There are 384 positions for candidate SSBs, and the length of a DRS window is 3.5 ms. For example, a parameter discoveryBurstWindowLength or discoveryBurstWindowLength-r16 or discoveryBurstWindowLength-r17' can be used to indicate the length of the DRS window, for example, discoveryBurstWindowLength-r17 ENUMERATED {ms0dot5, ms1, ms2, ms3, ms3dot5, ms4, ms5} . When a value of the discoveryBurstWindowLength-r17 parameter is ms2dot25, it may indicate that the DRS window length is 2.25 ms. ma / t / zuzz / utmuyo For example, when a subcarrier spacing of an SSB is 960 kHz, there is 416 positions for candidate SSBs, and the length of a DRS window is 4 ms. For a system operating in an unlicensed frequency band (or a system operating in a shared frequency band), an index of the first symbol of a candidate SSB (candidate SS / PBCH blocks) meets any of the following conditions: {0, 6}+14n (n is equal to 0, 1,2, 63, 80, ..., 143, 160, ..., 223, 240, ..., or 255); {0, 8}+14n (n is equal to 0, 1,2, ..., 63, 80, ..., 143, 160, ..., 223, 240, ..., or 255); {0, 10}+14n (n is equal to 0, 1,2, ...,63,80, ..., 143, 160, ...,223,240, ..., or 255); {2, 8}+14n (n is equal to 0, 1,2, ..., 63, 80, ..., 143, 160, ..., 223, 240, ..., or 255); {2, 10}+14n (n is equal to 0, 1,2, ...,63,80, ..., 143, 160, ...,223,240, ..., or 255); {4, 10}+14n (n is equal to 0, 1,2, ...,63,80, ..., 143, 160, ...,223,240, ..., or 255); {0, 6, 14, 20}+28n (n equals 0,1,2, {0, 6, 14, 22}+28n (n equals 0,1,2, {0, 6, 14 , 24}+28n (n is equal to 0,1,2, {0, 6, 16, 22}+28n (n is equal to 0,1,2, {0, 6, 16, 24}+28n ( n is equal to 0,1,2, {0, 6, 18, 24}+28n (n is equal to 0,1,2, {0, 8, 14, 20}+28n (n is equal to 0, 1,2, {0, 8, 14, 22}+28n (n is equal to 0,1,2, 31.40, . ., 31,40, . ., 31,40, . ., 31,40, . ., 31,40, . 31.40, . 31.40, . 31.40, . , 71.80, . , 71.80, . , 71.80, . , 71.80, . , 71.80, . , 71.80, . , 71.80, . , 71.80, . , 111, 120, , 111, 120, , 111, 120, , 111, 120, , 111, 120, , 111, 120, , 111, 120, , 111, 120, ., or 127). ., or 127) ., or 127) ., or 127) ., or 127) ., or 127) ., or 127) {0, 8, 14, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 111, 120, ..., or 127); {0, 8, 16, 22}+28n (n is equal to 0, 1,2, 31,40, ..., 71,80, 111, 120, ..., or 127); {0, 8,16, 24}+28n (n is equal to 0,1,2, 31,40, ..., 71,80, 111, 120, ..., or 127); {0, 8, 18, 24}+28n (n is equal to 0, 1,2, 31,40, ..., 71,80, 111, 120, ..., or 127); {0, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 111, 120, ..., 0 127); {0, 10, 14, 22}+28n (n is equal to 0, 1,2,..., 31,40, ..., 71,80, .. ,111, 120, ..., or 127); {0,10,14, 24}+28n (n is equal to 0,1,2,..., 31,40, ..., 71,80, .. ,111, 120, ..., or 127); {0,10,16, 22}+28n (n is equal to 0,1,2,..., 31,40, ..., 71,80, .. ,111, 120, ..., or 127); {0,10,16, 24}+28n (n is equal to 0,1,2,..., 31,40, ..., 71,80, .. ,111, 120, ..., or 127); {0,10,18, 24}+28n (n is equal to 0,1,2,..., 31,40, ..., 71,80, .. ,111, 120, ..., or 127); {2, 8, 14, 20}+28n (n is equal to 0,1,2,..., 31,40, ..., 71,80, ..., 111, 120, ..., or 127); {2, 8, 14, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 111, 120, ..., or 127); {2, 8, 14, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 111, 120, ..., or 127); {2, 8, 16, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 111, 120, ..., 0 127); {2, 8, 16, 24}+28n (n is equal to 0, 1,2, 31,40, ..., 71,80, 111, 120, ..., 0 127); {2, 8, 18, 24}+28n (n is equal to 0, 1,2, 31,40, ..., 71,80, 111, 120, ..., 0 127); {2, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 111, 120, ..., or 127); {2, 10, 14, 22}+28n (n is equal to 0, 1,2,..., 31,40, ..., 71,80, .. ,111, 120, ..., or 127); {2, 10, 14, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 111, 120, ..., or 127); {2, 10, 16, 22}+28n (n is equal to 0, 1,2,..., 31,40, ..., 71,80, .. ,111, 120, ..., 0 127); {2, 10, 16, 24}+28n (n is equal to 0, 1,2,.. 31,40, ..., 71,80, .. ,111, 120, ..., 0 127) ; {2, 10, 18, 24}+28n (n is equal to 0, 1,2,..., 31,40, ..., 71,80, .. ,111, 120, ..., 0 127); {4, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 111, 120, ..., 0 127); {4, 10, 14, 22}+28n (n is equal to 0, 1,2,..., 31,40, ..., 71,80, .. ,111, 120, ..., or 127); {4, 10, 14, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ..., 111, 120, ..., or 127); {4, 10, 16, 22}+28n (n is equal to 0, 1,2,..., 31,40, ..., 71,80, .. ,111, 120, ..., 0 127); {4, 10, 16, 24}+28n (n is equal to 0, 1,2,..., 31,40, ..., 71,80, .. ,111, 120, ..., or 127); and {4, 10, 18, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, .. ,111, 120, ..., 0 127). Alternatively, an index to the first symbol of a candidate SSB (blocks of SS / PBCH candidates) meet any of the following conditions: {a, b, c, d, e, f, g, h}+56n (n is equal to 0, 1,2, 15, 20, ..., 35, 40, ..., 55, 60, ..., or 63). A value of a is 0, 2, or 4; a value of b is 6, 8, or 10; a value of c is 14, 16, or 18; a value of d is 20, 22, or 24; a value of e is 28, 30, or 32; a value of f is 34, 36 or 38; a g value is 42, 44, or 46; and a value of h is 48, 50, or 52. For example, an index of the first symbol of a candidate SSB may satisfy {2, 8, 16, 22, 30, 36, 44, 50}+56n (n equals 0, 1,2, ..., 15, 20, ..., 35, 40, ..., 55, 60, ... or 63). ΜΛ / t / zuzz / utmuyo As another example, an index of the first symbol of a candidate SSB may satisfy {2, 10, 16, 24, 30, 38, 44, 52}+56n (n equals 0, 1, 2,..., 15 , 20,..., 35, 40,..., 55, 60, or 63). As another example, an index of the first symbol of a candidate SSB may satisfy {0, 8, 14, 22, 28, 36, 42, 50}+56n (n equals 0, 1,2, ..., 15 , 20, ..., 35, 40, ..., 55, 60, ..., or 63). For example, when a subcarrier spacing of an SSB is 960 kHz, there are 512 positions for candidate SSBs, and the length of a DRS window is 5 ms. For a system operating in an unlicensed frequency band (or a system operating in a shared frequency band), an index of the first symbol of a candidate SSB (candidate SS / PBCH blocks) meets any of the following conditions: {0, 6}+14n (n is equal to 0, 1,2, ..., 63, 80, ..., 143, 160, ..., 223, 240, ..., or 303); {0, 8}+14n (n is equal to 0,1,2,..., 63, 80,..., 143, 160,..., 223, 240,..., or 303); {0, 10}+14n (n is equal to 0, 1,2, ...,63,80, ..., 143, 160, ...,223,240, ..., or 303); {2, 8}+14n (n is equal to 0, 1,2, ..., 63, 80, ..., 143, 160, ..., 223, 240, ..., or 303); {2, 10}+14n (n is equal to 0, 1,2, ...,63,80, ..., 143, 160, ...,223,240, ..., or 303); {4, 10}+14n (n is equal to 0, 1,2, ...,63,80, ..., 143, 160, ...,223,240, ..., or 303); μλ / t / zuzz / utmuyo {0, 6, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ... 111, 120, ..., or 151) {0, 6, 14, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ... 111, 120, ... , or 151) {0, 6, 14, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ... 111, 120, . .., or 151) {0, 6, 16, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ... 111, 120 , ..., or 151) {0, 6, 16, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ... 111 , 120, ..., 0 151) {0, 6, 18, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, .. . 111, 120, ..., 0 151) {0, 8, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ... 111, 120, ..., 0 151) {0, 8, 14, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71, 80, ... 111, 120, ..., 0 151) {0, 8, 14, 24}+28n (n is equal to 0, 1,2, .... 31,40, ..., 71,80, ... 111, 120, ..., or 151) {0, 8, 16, 22}+28n (n is equal to 0, 1,2, ..., 31,40, .. ., 71,80, ... 111, 120, ..., or 151) {0, 8, 16, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, ... 111, 120, ..., 0 151) {0, 8, 18, 24}+28n (n is equal to 0, 1,2, ..., 31, 40, ..., 71,80, ... 111, 120, ..., 0 151) {0, 10, 14, 20}+28n (n is equal to 0, 1,2, ..., 31.40, ..., 71.80, . .,111, 120, ..., 0 151 {0, 10, 14, 22}+28n (n is equal to 0, 1.2, ..., 31.40, ..., 71.80, . .,111, 120, ..., 0 151 {0, 10, 14, 24}+28n (n is equal to 0, 1.2, ..., 31.40, ..., 71.80 , . .,111, 120, ..., or 151 {0, 10, 16, 22}+28n (n is equal toO, 1,2, ..., 31,40, ..., 71,80 , . .,111, 120, ..., or 151 {0, 10, 16, 24}+28n (n is equal toO, 1,2, ..., 31,40, ..., 71,80 , . .,111, 120, ..., 0 151 {0, 10, 18, 24}+28n (n is equal toO, 1,2, ..., 31.40, ..., 71.80 , . .,111, 120, ..., 0 151 {2, 8, 14, 20}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71, 80, ... 111, 120, ..., 0 151) {2, 8, 14, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71.80, ... 111, 120, ..., 0 151) {2, 8, 14, 24}+28n (n is equal to 0, 1.2, ..., 31.40, .. ., 71,80, ... 111, 120, ..., 0 151) {2, 8, 16, 22}+28n (n is equal to 0, 1,2, . ., 31,40, ..., 71,80, ..., 111, 120, ..., or 151); {2, 8, 16, 24}+28n (n is equal to 0, 1,2, . ., 31,40, ..., 71,80, ..., 111, 120, ..., or 151); {2, 8,18, 24}+28n (n is equal to 0,1,2,..., 31,40, ..., 71,80, ..., 111, 120, ..., or 151); {2, 10, 14, 20}+28n (n is equal to 0,1,2, ..., 31,40, ..., 71,80, .. ,111, 120, ..., or 151); {2, 10, 14, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, .. ,111, 120, ..., or 151); {2, 10, 14, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, .. ,111, 120, ..., or 151); {2, 10, 16, 22}+28n (n is equal to 0,1,2, ..., 31,40, ..., 71,80, .. ,111, 120, ..., or 151); {2, 10, 16, 24}+28n (n is equal to 0,1,2, ..., 31,40, ..., 71,80, .. ,111, 120, ..., or 151); {2, 10, 18, 24}+28n (n is equal to 0,1,2, ..., 31,40, ..., 71,80, .. ,111, 120, ..., or 151); {4, 10, 14, 20}+28n (n is equal to 0,1,2, ..., 31,40, ..., 71,80, .. ,111, 120, ..., or 151); {4, 10, 14, 22}+28n (n is equal to 0,1,2, ..., 31,40, ..., 71,80, .. ,111, 120, ..., or 151); {4, 10, 14, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, .. ,111, 120, ..., or 151); {4, 10, 16, 22}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, .. ,111, 120, ..., or 151); {4, 10, 16, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, .. ,111, 120, ..., or 151); and {4, 10, 18, 24}+28n (n is equal to 0, 1,2, ..., 31,40, ..., 71,80, .. ,111, 120, ..., or 151). Alternatively, an index to the first symbol of a candidate SSB (blocks of ma / t / zuzz / utmuyo SS / PBCH candidates) meet any of the following conditions: {a, b, c, d, e, f, g, h}+56n (n is equal to 0, 1,2, 15, 20, ..., 35, 40, 55, 60, ..., or 75). A value of a is 0, 2, or 4; a value of b is 6, 8, or 10; a value of c is 14, 16, or 18; a value of d is 20, 22, or 24; a value of e is 28, 30, or 32; a value of f is 34, 36 or 38; a g value is 42, 44, or 46; and a value of h is 48, 50, or 52. For example, an index of the first symbol of a candidate SSB may satisfy {2, 8, 16, 22, 30, 36, 44, 50}+56n (n equals 0, 1,2, ..., 15, 20, ..., 35, 40, ..., 55, 60, ... or 75). As another example, an index of the first symbol of a candidate SSB may satisfy {2, 10, 16, 24, 30, 38, 44, 52}+56n (n equals 0, 1, 2, ..., 15 , 20, ..., 35, 40, ...,55, 60, ..., or 75). As another example, an index of the first symbol of a candidate SSB may satisfy {0, 8, 14, 22, 28, 36, 42, 50}+56n (n equals 0, 1,2, ..., 15 , 20, ..., 35, 40, ..., 55, 60, ..., or 75). There are 128, 224,256, 320,384, 416 or 512 positions for candidate SSBs, and the length of a DRS window falls into {0.5 ms, 1 ms, 2 ms, 2.25 ms, 3 ms, 3.5 milliseconds, 4 milliseconds, 5 milliseconds}. For example, you can use a discoveryburstwindowlength or ”discoveryburswindowlength-r16 'or discoveryburstwindowlength-r17' parameter to indicate the length of the DRS window, for example, discoveryburstwindowlength-r17 enumerated {ms0dot5, ms1 ms1, m. S2DOT25, MS3, MS3DOT5, ms4, ms5}. It can be understood that the DRS window described in this application can also be called DBTW (discovery burst transmission window).

Claims

1. A method for transmitting a synchronization block / physical transmission channel, SS / PBCH block, characterized in that the method comprises: receiving, by a terminal device, an SS / PBCH block; and obtaining, by the terminal device, indication information based on the SS / PBCH block, wherein the indication information is used to indicate candidate indices of at least one SS / PBCH block in a burst set of SS / PBCH blocks, a number of the candidate indices is greater than 64, and the burst set of SS / PBCH blocks is a set in which the SS / PBCH block is found.

2. The method according to claim 1, characterized in that the indication information comprises information used to indicate a DMRS demodulation reference signal sequence and PBCH payload information, wherein the DMRS sequence occupies 3 bits and the PBCH payload occupies 4 bits.

3. The method according to claim 1 or 2, characterized in that the number of candidate indices is greater than or equal to 128.

4. The method according to any of claims 1 to 3, characterized in that the method further comprises: receiving, by the terminal device, configuration information, wherein the configuration information comprises a length of a discovery burst transmission window, the length of the discovery burst transmission window is greater than 5 ms, and the discovery burst transmission window is used by the terminal device to receive one or more sets of SS / PBCH block bursts.

5. The method according to claim 4, characterized in that at least two of the plurality of SS / PBCH block burst sets occupy different intervals, and the positions of the SS / PBCH blocks in the at least two SS / PBCH block burst sets are the same; at least two of the plurality of SS / PBCH block burst sets occupy different intervals, and the positions of the SS / PBCH blocks in the at least two SS / PBCH block burst sets are different; or at least two of the plurality of SS / PBCH block burst sets comprise different quantities of SS / PBCH blocks.

6. The method according to claim 5, characterized in that when at least two of the plurality of SS / PBCH block burst sets occupy different intervals, and the positions of the SS / PBCH blocks in the at least two SS / PBCH block burst sets are the same, the SS / PBCH block burst set sent by a network device to the terminal device is determined by the network device based on a listen-before-you-talk (LBT) result.

7. The method according to claims 4 to 6, characterized in that the configuration information further comprises a discovery burst transmission window period, and the discovery burst transmission window period is different from an SS / PBCH block burst set periodicity.

8. The method according to any of claims 1 to 7, characterized in that a time-domain position occupied by an SS / PBCH block in the SS / PBCH block burst set meets the following conditions: a start symbol of an SS / PBCH block in the SS / PBCH block burst set is any even symbol between the first and eleventh symbols in an interval configured by the network device; and / or the start symbols of two adjacent SS / PBCH blocks in the SS / PBCH block burst set are separated by one or more of 3, 5, 7, or 9 symbols.

9. The method according to any of claims 1 to 8, characterized in that the SS / PBCH block and a shared physical downlink channel PDSCH associated with the SS / PBCH block meet the following conditions: the PDSCH occupies a symbol length of 1 or 3; and / or a start symbol of the PDSCH is the second or fourth symbol of four symbols occupied by an SS / PBCH block.

10. A communication apparatus, characterized in that it comprises: a transceiver unit, configured to receive an SS / PBCH block; and a processing unit, configured to obtain indication information based on an SS / PBCH block, wherein the indication information is used to indicate candidate indices of at least one SS / PBCH block in a set of SS / PBCH block bursts, a number of the candidate indices is greater than 64, and the set of SS / PBCH block bursts is a set in which the SS / PBCH block is found.

11. The communication apparatus according to claim 10, characterized in that the indication information comprises information used to indicate a DMRS demodulation reference signal sequence and information about the PBCH payload, wherein the DMRS sequence occupies 3 bits and the PBCH payload occupies 4 bits.

12. The communication apparatus according to claim 10 or 11, ma / t / zuzz / utmuyo 88 characterized in that the number of candidate indices is greater than or equal to 128.

13. The communication apparatus according to any of claims 10 to 12, characterized in that the transceiver unit is further configured to receive configuration information, wherein the configuration information comprises a length of a discovery burst transmission window, the length of the discovery burst transmission window is greater than 5 ms, and the discovery burst transmission window is used by the terminal device to receive one or more sets of SS / PBCH block bursts.

14. The communication apparatus according to claim 13, characterized in that at least two of the plurality of SS / PBCH block burst sets occupy different intervals, and the positions of the SS / PBCH blocks in the at least two SS / PBCH block burst sets are the same; at least two of the plurality of SS / PBCH block burst sets occupy different intervals, and the positions of the SS / PBCH blocks in the at least two SS / PBCH block burst sets are different; or at least two of the plurality of SS / PBCH block burst sets comprise different quantities of SS / PBCH blocks.

15. The communication apparatus according to claim 14, characterized in that when at least two of the plurality of SS / PBCH block burst sets occupy different intervals, and the positions of the SS / PBCH blocks in the at least two SS / PBCH block burst sets are the same, the SS / PBCH block burst set sent by a network device to the terminal device is determined by the network device based on a listen-before-you-talk (LBT) result.

16. The communication apparatus according to any of claims 13 to 15, characterized in that the configuration information further comprises a discovery burst transmission window period, and the discovery burst transmission window period is different from an SS / PBCH block burst set periodicity.

17. The communication apparatus according to any of claims 10 to 16, characterized in that a time-domain position occupied by an SS / PBCH block in the SS / PBCH block burst set meets the following conditions: a start symbol of an SS / PBCH block in the SS / PBCH block burst set is any even symbol between the first and eleventh symbols in an interval configured by the network device; and / or the start symbols of two adjacent SS / PBCH blocks in the SS / PBCH block burst set are separated by one or more of 3, 5, 7, or 9 symbols.

18. The communication apparatus according to any of claims 10 to 17, characterized in that the SS / PBCH block and a shared physical downlink channel PDSCH associated with the SS / PBCH block meet the following conditions: the PDSCH occupies a symbol length of 1 or 3; and / or a start symbol of the PDSCH is the second or fourth symbol of four symbols occupied by an SS / PBCH block.

19. A communication apparatus, characterized in that it comprises a processor, configured to execute a program stored in a memory, wherein when the program is executed, the communication apparatus is enabled to carry out the method according to any of claims 1 to 9.

20. The apparatus according to claim 19, characterized in that the memory is located outside the communication apparatus.

21. A communication apparatus, characterized in that it comprises a processor, a memory, and a program stored in the memory and executable on the processor, wherein when the program is started, the communication apparatus is enabled to carry out the method according to any one of claims 1 to 9.

22. A computer-readable storage medium, characterized in that it comprises a computer program, wherein when the computer program is started on a computer, the method is carried out in accordance with any one of claims 1 to 9.

23. A computer program product, characterized in that when the computer program product is started on a computer, the method is carried out in accordance with any one of claims 1 to 9.

24. A computer program, characterized in that when the computer program is started on a computer, the method is carried out in accordance with any one of claims 1 to 9.

Images