SS / PBCH block receiving method and apparatus and SS / PBCH block sending method and apparatus, device, and medium

Abstract

The present application relates to the technical field of communications. Disclosed are a synchronization signal (SS) / PBCH block receiving method and apparatus and an SS / PBCH block sending method and apparatus, a device, and a medium. The receiving method comprises: receiving a first SS / PBCH block, wherein a first SS / PBCH block structure corresponding to the first SS / PBCH block is indicated by first information. Such a method for determining an SS / PBCH block structure can reduce the power consumption of a terminal device, and can also reduce the detection delay.

Description

SS / PBCH block receiving and transmitting methods, apparatus, equipment and media

[0001] This application claims priority to PCT application No. PCT / CN2025 / 079654, filed on February 27, 2025, entitled “Information Determination Method, Apparatus, Device, Medium and Program Product”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and in particular to a method, apparatus, device and medium for receiving and transmitting Synchronization Signal (SS) / Physical Broadcast Channel (PBCH) blocks. Background Technology

[0003] Downlink synchronization is the process of aligning the receiver and transmitter in time and frequency within a communication system. It is achieved through specific synchronization signals, ensuring that the receiver can accurately identify signal boundaries, recover the data clock, and demodulate the signal. Downlink synchronization is crucial for reducing bit error rate, improving communication efficiency and reliability, and is the foundation for stable data transmission. Summary of the Invention

[0004] This application provides an SS / PBCH block receiving and transmitting method, apparatus, device, and medium. The technical solution is as follows:

[0005] According to one aspect of the embodiments of this application, an SS / PBCH block reception method is provided, the method comprising:

[0006] Receive the first SS / PBCH block, the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the first information.

[0007] According to another aspect of the embodiments of this application, an SS / PBCH block transmission method is provided, the method comprising:

[0008] Send a first synchronization signal SS / PBCH block, the structure of which is indicated by the first information.

[0009] According to another aspect of the embodiments of this application, an SS / PBCH block receiving apparatus is provided, the SS / PBCH block receiving apparatus comprising:

[0010] The receiving module is used to receive a first synchronization signal SS / PBCH block, the structure of which is indicated by first information.

[0011] According to another aspect of the embodiments of this application, an SS / PBCH block transmission apparatus is provided, the SS / PBCH block transmission apparatus comprising:

[0012] The transmitting module is used to transmit a first synchronization signal SS / PBCH block, the structure of which is indicated by first information.

[0013] According to another aspect of the embodiments of this application, a terminal device is provided, the terminal device including: a processor; a transceiver connected to the processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the information SS / PBCH block receiving method as described in the above aspects.

[0014] According to another aspect of the embodiments of this application, a network device is provided, the network device including: a processor; a transceiver connected to the processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the SS / PBCH block transmission method as described in the above aspects.

[0015] According to another aspect of the embodiments of this application, a computer-readable storage medium is provided, which stores at least one program that is loaded and executed by a processor to implement the SS / PBCH block receiving and transmitting method as described in the various aspects above.

[0016] According to another aspect of the embodiments of this application, a chip is provided, the chip including programmable logic circuits and / or program instructions, which, when the chip is running on a terminal device, are used to implement the SS / PBCH block receiving method of the above aspects; and when the chip is running on a network device, are used to implement the SS / PBCH block sending method of the above aspects.

[0017] According to another aspect of the embodiments of this application, a computer program product or computer program is provided, which includes computer instructions stored in a computer-readable storage medium, a processor retrieving the computer instructions from the computer-readable storage medium, and the processor executing the computer instructions to implement the SS / PBCH block receiving and transmitting method as described in the various aspects above.

[0018] The technical solution provided in this application can bring at least the following beneficial effects:

[0019] In this embodiment, the first SS / PBCH block structure is indicated by first information. Different first SS / PBCH block structures correspond to different first information. The terminal device determines the first SS / PBCH block structure corresponding to the first SS / PBCH block from a variety of candidate SS / PBCH block structures supported by the system by performing detection on the first information. Compared with the method in related technologies where the terminal device detects multiple candidate SS / PBCH block structures separately, this method of determining the SS / PBCH block structure can reduce the power consumption of the terminal device and reduce the detection latency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 shows a schematic diagram of a mobile communication system provided by some illustrative embodiments of this application;

[0022] Figure 2 shows a schematic diagram of the structure of a synchronization signal block provided in an exemplary embodiment of this application;

[0023] Figure 3 shows a schematic diagram of the SS / PBCH block provided in an exemplary embodiment of this application;

[0024] Figure 4 shows a schematic diagram of the SS / PBCH block provided in an exemplary embodiment of this application;

[0025] Figure 5 shows a schematic diagram of the SS / PBCH block provided in an exemplary embodiment of this application;

[0026] Figure 6 shows a schematic diagram of the SS / PBCH block provided in an exemplary embodiment of this application;

[0027] Figure 7 shows a schematic diagram of the SS / PBCH block provided in an exemplary embodiment of this application;

[0028] Figure 8 shows a schematic diagram of the SS / PBCH block provided in an exemplary embodiment of this application;

[0029] Figure 9 shows a schematic diagram of the SS / PBCH block provided in an exemplary embodiment of this application;

[0030] Figure 10 shows a schematic diagram of the SS / PBCH block provided in an exemplary embodiment of this application;

[0031] Figure 11 shows a flowchart of the SS / PBCH block receiving method provided in an exemplary embodiment of this application;

[0032] Figure 12 shows a flowchart illustrating the SS / PBCH block transmission method provided in an exemplary embodiment of this application;

[0033] Figure 13 shows a schematic diagram of the SS / PBCH block provided in an exemplary embodiment of this application;

[0034] Figure 14 shows a schematic diagram of the SS / PBCH block provided in an exemplary embodiment of this application;

[0035] Figure 15 shows a schematic diagram of the SS / PBCH block provided in an exemplary embodiment of this application;

[0036] Figure 16 shows a structural block diagram of an SS / PBCH block receiving apparatus provided in an exemplary embodiment of this application;

[0037] Figure 17 shows a structural block diagram of an SS / PBCH block transmission apparatus provided in an exemplary embodiment of this application;

[0038] Figure 18 shows a schematic diagram of the structure of a communication device provided in an exemplary embodiment of this application. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings. Exemplary embodiments will be described in detail here, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0040] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0041] It should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein can be interpreted as "in the case of," "when," or "in response to determination." In this specification, when expressing the meaning of Boolean values, "0" is expressed as "first meaning" and "1" as "second meaning." Without loss of generality, those skilled in the art will understand that the meanings they represent can be interchanged, i.e., "1" represents "first meaning" and "0" represents "second meaning."

[0042] It should be understood that the term "instruction" mentioned in the embodiments of this application can be a direct instruction, an indirect instruction, or an indication of an association. For example, A instructing B can mean that A directly instructs B, for example, B can obtain information through A; it can also mean that A indirectly instructs B, for example, A instructs C, and B can obtain information through C; or it can mean that there is an association between A and B. The term "correspondence" can mean that there is a direct or indirect correspondence between two things, or that there is an association between two things, or it can mean an instruction and being instructed, a configuration and being configured, etc.

[0043] In this article, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0044] The technical solutions described in some embodiments of this application can be applied to various communication systems, such as: Long Term Evolution (LTE) systems, Advanced Long Term Evolution (LTE-A) systems, New Radio (NR) systems, evolution systems of NR systems, LTE-based access to unlicensed spectrum (LTE-U) systems, NR-based access to unlicensed spectrum (NR-U) systems, Non-Terrestrial Networks (NTN) systems, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), 5th-Generation (5G) systems, cellular IoT systems, cellular passive IoT systems, and can also be applied to subsequent evolution systems of 5G NR systems, as well as 6G and subsequent evolution systems.

[0045] It should be understood that in some embodiments of this application, "5G" may also be referred to as "5G NR" or "NR".

[0046] It should be understood that in the description of the embodiments of this application, the term "correspondence" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that there is a relationship of instruction and being instructed, configuration and being configured, etc.

[0047] In this application embodiment, "predefined" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0048] In this application embodiment, "protocol" may refer to standard protocols in the field of communication, such as LTE protocol, NR protocol and related protocols applied to future communication systems, and this application does not limit it.

[0049] Figure 1 shows a schematic diagram of a mobile communication system provided in an exemplary embodiment of this application. The mobile communication system includes a network device 110 and a terminal device 120, and may or may not include a terminal device 130; this application does not limit this.

[0050] The network device 110 in this application provides wireless communication functionality. This network device 110 includes, but is not limited to: an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a Home Evolved Node B (or Home Node B, HNB), a Base Band Unit (BBU), an Access Point (AP) in a Wireless Fidelity (Wi-Fi) system, a wireless relay node, a wireless backhaul node, a Transmission Point (TP), or a Transmission and Reception Point (TRP), etc. It can also be used for next-generation Node B (Next Generation Node) systems in 5G mobile communication systems. B, gNB) or transmission point (TRP or TP), or, in a 5G system, one or a group of antenna panels (including multiple antenna panels) of a base station, or, network nodes constituting a gNB or transmission point, such as baseband unit (BBU) or distributed unit (DU), or base stations in Beyond Fifth Generation (B5G) or 6th Generation (6G) mobile communication systems, or core network (CN), fronthaul, backhaul, radio access network (RAN), network slicing, etc., or serving cell, primary cell (PCell), primary secondary cell (PSCell), special cell (SpCell), secondary cell (SCell), neighboring cell, etc. of terminal equipment.

[0051] The terminal equipment 120 in this application is also referred to as user equipment (UE), access terminal equipment, user unit, user station, mobile station, mobile station, remote station, remote terminal equipment, mobile device, user terminal equipment, terminal equipment, wireless communication equipment, user agent, or user device. The terminal devices include, but are not limited to: handheld devices, wearable devices, in-vehicle devices, and IoT devices, such as: mobile phones, tablets, e-readers, laptops, desktop computers, televisions, game consoles, mobile internet devices (MID), augmented reality (AR) terminal devices, virtual reality (VR) terminal devices, mixed reality (MR) terminal devices, extended reality (XR) terminal devices, baffle reality (BR) terminal devices, cinematic reality (CR) terminal devices, deceive reality (DR) terminal devices, wearable devices, controllers, controllers, wireless terminal devices in industrial control, wireless terminal devices in self-driving, wireless terminal devices in remote medical care, wireless terminal devices in smart grids, wireless terminal devices in transportation safety, and smart city technologies. Wireless terminal devices in cities, smart homes, remote medical surgeries, cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), Set-Top Boxes (STBs), Customer Premise Equipment (CPEs), etc.

[0052] In some embodiments, network device 110 and terminal device 120 communicate with each other through some air interface technology, such as the Uu interface.

[0053] For example, there are two communication scenarios between network device 110 and terminal device 120: uplink communication scenario and downlink communication scenario. Uplink communication, or uplink transmission, refers to terminal device 120 sending signals or data to network device 110; downlink communication, or downlink transmission, refers to network device 110 sending signals or data to terminal device 120.

[0054] In some embodiments, terminal device 120 and terminal device 130 communicate with each other through some air interface technology, such as the PC5 interface.

[0055] For example, there are two communication scenarios between terminal device 120 and terminal device 130: a first side-by-side communication scenario and a second side-by-side communication scenario. The first side-by-side communication refers to terminal device 120 sending signals or data to terminal device 130; the second side-by-side communication refers to terminal device 130 sending signals or data to terminal device 120.

[0056] In some embodiments, terminal device 120 and terminal device 130 are both within network coverage and located in the same cell, or terminal device 120 and terminal device 130 are both within network coverage but located in different cells, or terminal device 120 is within network coverage but terminal device 130 is outside network coverage.

[0057] In some embodiments of this application, "NR" may also be referred to as a 5G NR system or a 5G system. The 5G mobile communication system may include non-standalone (NSA) and / or standalone (SA) networking.

[0058] The technical solutions provided in the embodiments of this application can also be applied to Machine-Type Communication (MTC), Long Term Evolution-Machine (LTE-M) technology, Device-to-Device (D2D) networks, Machine-to-Machine (M2M) networks, Internet of Things (IoT) networks, or other networks. Among them, IoT networks may include, for example, vehicle-to-everything (V2X) networks. The communication methods in V2X systems are collectively referred to as Vehicle to X (V2X), where X can represent anything. For example, V2X may include: Vehicle to Vehicle (V2V) communication, Vehicle to Infrastructure (V2I) communication, Vehicle to Pedestrian (V2P) communication, or Vehicle to Network (V2N) communication, etc.

[0059] The mobile communication system provided in this application embodiment can be applied to at least one of the following communication scenarios: uplink communication scenario, downlink communication scenario, and sidelink communication scenario.

[0060] The following section describes the relevant technologies involved in the embodiments of this application:

[0061] • Physical Downlink Control Channel (PDCCH) Detection

[0062] Network devices send Downlink Control Information (DCI) to terminal devices. DCI is used for downlink scheduling, such as scheduling the Physical Downlink Shared Channel (PDSCH), or for uplink granting, such as scheduling the Physical Uplink Shared Channel (PUSCH). DCI can also be used to transmit common control information, carried via PDCCH. Network devices configure a search space for terminal devices (or simply terminals). Different aggregation levels (ALs) can be configured, and at each AL, the number of candidate PDCCHs the terminal device needs to monitor is configured. Terminal devices need to perform PDCCH detection within the search space. Since the terminal device does not know which resources in the search space the network device will send PDCCHs on, it needs to detect each candidate PDCCH resource in the search space; this process is called blind PDCCH detection. The maximum number of PDCCHs that a terminal device needs to monitor within a time slot is related to the subcarrier spacing. For example, with a subcarrier spacing of 15kHz, the maximum number of PDCCHs that a terminal device needs to monitor within a time slot is 44. Referring to Table 1, when the subcarrier spacing parameter μ takes values ​​of 0, 1, 2, and 3, it corresponds to subcarrier spacings of 15kHz, 30kHz, 60kHz, and 120kHz, respectively.

[0063] Table 1

[0064] In 5G NR systems, DCI uses Polar encoding. Each time the terminal device detects PDCCH, it needs to perform decoding, which leads to higher power consumption and increased processing latency.

[0065] A PDCCH's transmission resources can include M1 Control Channel Elements (CCEs), corresponding to different aggregation levels (ALs), for example, M1 = 1, 2, 4, 8, 16, 32. The relationship between aggregation level and the number of CCEs is shown in Table 2 below. Each CCE can include M2 ​​Resource Element Groups (REGs), for example, M2 = 6. One REG corresponds to a Physical Resource Block (PRB) in the frequency domain and an Orthogonal Frequency Division Multiplexing (OFDM) symbol in the time domain. The transmission reliability varies depending on the number of CCEs occupied by the PDCCH; for example, the more CCEs a PDCCH occupies, the higher its transmission reliability.

[0066] Table 2

[0067] • Optimization of terminal device complexity

[0068] Terminal devices, often simply referred to as terminals, are designed to support extremely high peak data rates. Therefore, the capabilities required of terminal devices are quite demanding. The LTE standard defines a maximum single-carrier bandwidth of 20MHz, with larger bandwidths achieved through multi-carrier aggregation. 5G NR ultimately defines a maximum carrier bandwidth of 100MHz for frequencies below 6GHz, five times that of LTE, while the maximum carrier bandwidth for millimeter-wave frequencies is 400MHz. The required multiple-input multiple-output (MIMO) antenna configuration for NR has also been further increased. The reference configuration for LTE terminal antennas is one transmit and two receive antennas, while NR Rel-15 (the 15th version) requires two transmit and four receive antennas at frequencies above 2500MHz.

[0069] However, some NR applications do not require such high processing power in terms of capacity and speed. These applications include the Internet of Things (IoT), industrial automation, and wearable devices. These scenarios demand communication hardware with low size and power consumption; lightweight capability is a characteristic of these terminals. Based on this consideration, NR Rel-17 (the 17th version) research introduced a compact terminal standard with reduced capability (RedCap).

[0070] The Compact Terminal standard reduces some mandatory capabilities of NR Rel-15 / Rel-16. Corresponding terminal function groups are defined for these capabilities. The Compact Terminal standard also further optimizes terminal identification, access procedures, and power consumption in measurements to suit relevant application scenarios. This compact terminal device design significantly reduces the complexity of the terminal device hardware. It also correspondingly reduces the terminal device's power consumption, thus achieving energy savings.

[0071] Before introducing the technical solution of this application, some contents involved in this application will be described first. The following contents are optional solutions and can be combined with the technical solutions of the embodiments of this application in any way, and all of them fall within the protection scope of the embodiments of this application. The embodiments of this application include at least some of the following contents.

[0072] ·SS / PBCH block

[0073] To ensure normal communication between terminal devices and network devices, terminal devices must obtain synchronization. Terminal devices can obtain synchronization based on the synchronization signal (SS) sent by the network device for subsequent data reception and / or transmission. Terminal devices can also obtain the Master Information Block (MIB) based on the Physical Broadcast Channel (PBCH) sent by the network device. Network devices send the synchronization signal and PBCH in the form of SS / PBCH blocks.

[0074] The synchronization signals include the Primary Synchronization Signal (PSS) and the Secondary Synchronization Signal (SSS). The PRB used to map the PBCH can also be used to map reference signals (such as the PBCH Demodulation Reference Signal (DMRS)). Alternatively, the OFDM symbols used to map the PBCH may be different from those used to map the DMRS. The PBCH carries physical layer information and / or higher-layer information. The SS / PBCH block is also simply called the Synchronization Signal Block (SSB).

[0075] Figure 2 illustrates a schematic diagram of the SS / PBCH block structure provided in an exemplary embodiment of this application. Specifically, if the system adopts a CP-OFDM (Cyclic Prefix Orthogonal Frequency Division Multiplexing) waveform, the structure of the SS / PBCH block is shown in Figure 2: the frequency domain size of the SS / PBCH block is 20 PRBs and it occupies 4 OFDM symbols in the time domain. The PSS and SSS are located in the first and third OFDM symbols, respectively. The length of both the PSS and SSS sequences is 127, and they are mapped to the middle 12 PRBs (including guard subcarriers) of the 20 PRBs, respectively. The PBCH is located on some subcarriers corresponding to the second OFDM symbol, the fourth OFDM symbol, and the third OFDM symbol. In the second and fourth OFDM symbols, the PBCH (including the PBCH DMRS) is mapped to all subcarriers corresponding to the 20 PRBs (a total of 240 subcarriers). In the third OFDM symbol, the PBCH (including the PBCH DMRS) is mapped to the four PRBs with the lowest frequency domain position and the four PRBs with the highest frequency domain position among the 20 PRBs.

[0076] To support high-speed data transmission, large bandwidth is typically used, placing higher demands on the hardware capabilities of terminal devices and consuming more power. When terminal devices do not require high-speed transmission, operating on a large bandwidth will consume excessive power. In such cases, the terminal device can be operated on a smaller bandwidth to achieve energy savings.

[0077] For example, if the system bandwidth is 3MHz or 5MHz, the number of PRBs corresponding to this bandwidth is less than 20, requiring a new SS / PBCH structure. The maximum number of PRBs that can be supported for different channel bandwidths is related to the channel bandwidth and subcarrier spacing. Table 3 shows the maximum transmission bandwidth that can be configured for different channel bandwidths at different subcarrier spacings (SCS) (in terms of the number of PRBs N). RB (Represented by...). In Table 3, the first and sixth rows represent the channel bandwidth (from 3MHz to 100MHz), the first column represents the subcarrier spacing (SCS), and N / A indicates undefined or not supported.

[0078] Table 3 Maximum Transmission Bandwidth N RB

[0079] For CP-OFDM waveforms, to support scenarios with a system bandwidth of less than 20 PRB, the possible SS / PBCH block structure is as follows:

[0080] • The frequency domain resource size of the SS / PBCH block is 11

[0081] In some embodiments, a single PRB comprises 12 subcarriers, and 11 PRBs comprise a total of 132 subcarriers. Therefore, the frequency domain size of the SS / PBCH block can also be considered to be 132 subcarriers. In this embodiment, the 132 subcarriers are sorted from low to high frequency domain position, with the subcarrier at the lowest frequency domain position designated as index 0, and so on, with the subcarrier at the highest frequency domain position designated as index 131.

[0082] Referring to Figure 3, the sequence lengths of PSS and SSS are 127, mapped to 127 subcarriers in 11 PRBs. PSS occupies 11 PRBs corresponding to one OFDM symbol. SSS occupies 11 PRBs corresponding to one OFDM symbol. PBCH occupies 11 PRBs corresponding to each of at least two OFDM symbols. Optionally, PBCH occupies 11 PRBs corresponding to each of at least two remaining OFDM symbols, excluding those occupied by PSS and SSS.

[0083] As shown in Figures 3(a) to (e), in the 11 PRBs corresponding to one OFDM symbol occupied by the PSS, the subcarriers occupied by the PSS with indices 2, 3, 4, 5…126, 127, 128, and the subcarriers with indices 0, 1, 129, 130, 131 are all set to 0. These 5 subcarriers set to 0 can protect the PSS and are therefore called protective subcarriers. Similarly, in the 11 PRBs corresponding to one OFDM symbol occupied by the SSS, the subcarriers occupied by the SSS with indices 2, 3, 4, 5…126, 127, 128, and the subcarriers with indices 0, 1, 129, 130, 131 are all set to 0. These 5 subcarriers set to 0 can be called protective subcarriers. The PBCH occupies 11 PRBs corresponding to each OFDM symbol in the remaining OFDM symbols excluding those occupied by the PSS and SSS. For OFDM symbols including PBCH (including PBCH DMRS), all of the 11 PRBs are used to map PBCH, that is, the subcarrier indices mapped by PBCH (including PBCH DMRS) are 0, 1, 2...130, 131.

[0084] As shown in Figure 3(a), a total of 22 PRBs are used for PBCH transmission in the SS / PBCH block shown in Figure 3(a). As shown in Figures 3(b) to (e), a total of 44 PRBs are used for PBCH transmission in the SS / PBCH block shown in Figures 3(b) to (e).

[0085] The SS / PBCH block structure shown in Figure 3 does not require changes to the sequence lengths of PSS and SSS, and is applicable to all channel bandwidths (from 3MHz to 100MHz) and all subcarrier spacings shown in Table 3. It is particularly suitable for cases where the channel bandwidth is 11 PRBs (such as the cases in Table 3 where the channel bandwidth is 5MHz and SCS = 30kHz and the channel bandwidth is 10MHz and SCS = 60kHz). Furthermore, compared to Figure 3(a), Figures 3(b) to (e) provide more PRBs for PBCH transmission, ensuring sufficient transmission resources for the PBCH and significantly reducing the PBCH code rate.

[0086] • The frequency domain resource size of the SS / PBCH block is 12

[0087] In some embodiments, a single PRB comprises 12 subcarriers, and the 12 PRBs comprise a total of 144 subcarriers. Therefore, the frequency domain size of the SS / PBCH block can also be considered to be 144 subcarriers. In this embodiment, the 144 subcarriers are sorted from low to high frequency, with the subcarrier at the lowest frequency domain position designated as index 0, and so on, with the subcarrier at the highest frequency domain position designated as index 143.

[0088] Referring to Figure 4, the sequence lengths of PSS and SSS are 127, mapped to 127 subcarriers in 12 PRBs. PSS occupies 12 PRBs corresponding to one OFDM symbol. SSS occupies 12 PRBs corresponding to one OFDM symbol. PBCH occupies 12 PRBs corresponding to each of at least two OFDM symbols. Optionally, PBCH occupies 12 PRBs corresponding to each of at least two remaining OFDM symbols, excluding those occupied by PSS and SSS.

[0089] As shown in Figures (a) to (e) of Figure 4, among the 12 PRBs corresponding to the OFDM symbol occupied by the PSS, the subcarriers occupied by the PSS have indices of 8, 9, 10, ... 132, 133, 134, while the subcarriers with indices of 0, 1, 2, 3, 4, 5, 6, 7, 135, 136, 137, 138, 139, 140, 141, 142, 143 are all set to 0. The subcarriers set to 0 can protect the PSS. In the 12 PRBs corresponding to the one OFDM symbol occupied by the SSS, the subcarriers occupied by the SSS have indices 8, 9, 10, ... 132, 133, 134, while the subcarriers with indices 0, 1, 2, 3, 4, 5, 6, 7, 135, 136, 137, 138, 139, 140, 141, 142, 143 are all set to 0. These subcarriers set to 0 serve to protect the SSS. The PBCH occupies 12 PRBs corresponding to each OFDM symbol in the remaining OFDM symbols excluding those occupied by the PSS and SSS. For OFDM symbols including those occupied by the PBCH (including PBCH DMRS), all PRBs in these 12 PRBs are used to map the PBCH; that is, the subcarrier indices mapped by the PBCH (including PBCH DMRS) are all 0, 1, 2... 142, 143.

[0090] As shown in Figure 4(a), a total of 24 PRBs are used for PBCH transmission in the SS / PBCH block shown in Figure 4(a). As shown in Figures 4(b) to (e), a total of 48 PRBs are used for PBCH transmission in the SS / PBCH block shown in Figures 4(b) to (e).

[0091] The SS / PBCH block structure shown in Figure 4 does not require changes to the sequence lengths of the PSS and SSS, and is applicable to all channel bandwidths (from 3MHz to 100MHz) and all subcarrier spacings shown in Table 3. It is particularly suitable for cases with a channel bandwidth of 11 PRBs (such as the cases of 5MHz channel bandwidth and SCS = 30kHz and 10MHz channel bandwidth and SCS = 60kHz in Table 3). Furthermore, compared to Figure 4(a), Figures 4(b) to (e) provide more PRBs for PBCH transmission, ensuring sufficient transmission resources for the PBCH and significantly reducing the PBCH code rate. Compared to Figure 2, Figure 4 increases the number of symbols occupied by the PBCH (e.g., 4 symbols) to make the number of PRBs occupied by the PBCH (a total of 48 PRBs) the same as the number of PRBs occupied by the PBCH in Figure 2, thus ensuring that different SS / PBCH block structures supporting transmission at different bandwidths have the same amount of PBCH transmission resources.

[0092] • The frequency domain resource size of the SS / PBCH block is 15.

[0093] In some embodiments, a single PRB includes 12 subcarriers, and 15 PRBs together include 180 subcarriers. Therefore, the frequency domain size of the SS / PBCH block can also be considered as 180 subcarriers. In this embodiment, the 180 subcarriers are sorted from low to high frequency, with the subcarrier at the lowest frequency domain position designated as index 0, and so on, with the subcarrier at the highest frequency domain position designated as index 179.

[0094] Referring to Figure 5, the sequence lengths of PSS and SSS are 127, mapped to 127 subcarriers in 15 PRBs. PSS occupies 15 PRBs corresponding to one OFDM symbol. SSS occupies 15 PRBs corresponding to one OFDM symbol. PBCH occupies 15 PRBs corresponding to each of at least two OFDM symbols. Optionally, PBCH occupies 15 PRBs corresponding to each of at least two remaining OFDM symbols, excluding those occupied by PSS and SSS.

[0095] As shown in Figures (a) to (d) of Figure 5, in the 15 PRBs corresponding to one OFDM symbol occupied by the PSS, the subcarriers occupied by the PSS with subcarrier indices 26, 27, 28…150, 151, 152, and the subcarriers with indices 0, 1, 2…23, 24, 25, 153, 154, 155…177, 178, 179 are all set to 0. In the 11 PRBs corresponding to one OFDM symbol occupied by the SSS, the subcarriers occupied by the SSS with subcarrier indices 26, 27, 28…150, 151, 152, and the subcarriers with indices 24, 25, 153, 154, 155 are all set to 0. For the OFDM symbol containing the SSS, the PBCH (including PBCH DMRS) is mapped to the two PRBs with the highest frequency domain positions (i.e., subcarriers 156, 157, 158…178, 179) and the two PRBs with the lowest frequency domain positions (i.e., subcarriers 0, 1, 2…22, 23). For other OFDM symbols including the PBCH (including PBCH DMRS) besides the OFDM symbol containing the SSS, all of the 15 PRBs are used to map the PBCH, that is, the subcarrier indices mapped by the PBCH (including PBCH DMRS) are 0, 1, 2…178, 179.

[0096] As shown in Figure 5(a), a total of 34 PRBs are used for PBCH transmission in the SS / PBCH block shown in Figure 5(a). As shown in Figures 5(b) to (d), a total of 49 (15×3+2×2) PRBs are used for PBCH transmission in the SS / PBCH block shown in Figures 5(b) to (d).

[0097] The SS / PBCH block structure shown in Figure 5 does not require changes to the sequence lengths of PSS and SSS, and is applicable to all channel bandwidths (from 3MHz to 100MHz) and all subcarrier spacings shown in Table 3. It is particularly suitable for cases where the channel bandwidth is 11 PRBs (such as the cases in Table 3 where the channel bandwidth is 5MHz and SCS = 30kHz and the channel bandwidth is 10MHz and SCS = 60kHz). Furthermore, compared to Figure 5(a), Figures 5(b) to (d) provide more PRBs for PBCH transmission, ensuring sufficient transmission resources for the PBCH and significantly reducing the PBCH code rate.

[0098] It should be understood that the SS / PBCH block structure in the embodiments of this application may also include other structures. For example, the SS / PBCH block occupies 14 OFDM symbols in a time slot, the PSS occupies 2 adjacent OFDM symbols, the SSS occupies 2 adjacent OFDM symbols, the PBCH occupies 10 OFDM symbols excluding the OFDM symbols corresponding to the PSS and SSS, the PSS occupies the first 2 OFDM symbols in the time slot, and there is a gap of P1 OFDM symbols between the first SSS symbol and the last PSS symbol, where P1 is an integer greater than or equal to 0. As another example, the SS / PBCH block occupies 14 OFDM symbols in a time slot, the PSS occupies 3 adjacent OFDM symbols, the SSS occupies 3 adjacent OFDM symbols, the PBCH occupies 8 OFDM symbols excluding the OFDM symbols corresponding to the PSS and SSS, the PSS occupies the first 3 OFDM symbols in the time slot, and there is a gap of P2 OFDM symbols between the first SSS symbol and the last PSS symbol, where P2 is an integer greater than or equal to 0.

[0099] Compared to CP-OFDM waveforms, DFT-s-OFDM (Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing) waveforms have a lower PAPR (Peak to Average Power Ratio). Using DFT-s-OFDM waveforms for downlink transmission can improve coverage. In the SS / PBCH block structure based on DFT-s-OFDM waveforms, PBCH DMRS and PBCH occupy different OFDM symbols, and PBCH, PBCH DMRS, PSS, and SSS each occupy different OFDM symbols. An example SS / PBCH block structure based on DFT-s-OFDM waveforms is shown below.

[0100] Scenario 1: The frequency domain sizes of PSS / SSS and PBCH are different.

[0101] Figure 6 shows a schematic diagram of the SS / PBCH block provided in an exemplary embodiment of this application.

[0102] The frequency domain size of PBCH and PBCH DMRS is X PRBs. The frequency domain positions and sizes of PSS and SSS are the same, and the frequency domain size of PSS / SSS is E PRBs. Preferably, 1 ≤ E < X. The lowest PRB occupied by PSS / SSS is spaced Y PRBs away from the lowest PRB occupied by PBCH / PBCH DMRS, and the highest PRB occupied by PSS / SSS is spaced Z PRBs away from the highest PRB occupied by PBCH / PBCH DMRS. The length of the PSS and SSS sequences is L, where L is a positive integer. The first subcarrier mapped by PSS / SSS is spaced C subcarriers away from the first subcarrier of the first PRB in the E PRBs, and the last subcarrier mapped by PSS / SSS is spaced D subcarriers away from the last subcarrier of the last PRB in the E PRBs.

[0103] PSS occupies M consecutive OFDM symbols, SSS occupies N consecutive OFDM symbols, and PBCH and PBCH DMRS occupy K OFDM symbols.

[0104] As shown in Figure 6(a), the PSS is located in the first M OFDM symbols of the SS / PBCH block, the SSS is located in the last N OFDM symbols of the SS / PBCH block, and the PBCH and PBCH DMRS symbols are located between the PSS and SSS symbols. As shown in Figure 6(b), the PSS is located in the first M OFDM symbols of the SS / PBCH block, the SSS is located after the PSS and adjacent to the N OFDM symbols, and the PBCH and PBCH DMRS symbols are located after the SSS and adjacent to the SSS symbols. As shown in Figure 6(c), the PSS is located in the first M OFDM symbols of the SS / PBCH block, the SSS is located in the middle of multiple OFDM symbols used for transmitting PBCH and / or PBCH DMRS, and there are K1 OFDM symbols used for transmitting PBCH and / or PBCH DMRS before the SSS symbol, and K2 OFDM symbols used for transmitting PBCH and / or PBCH DMRS after the SSS symbol, where K1 + K2 = K.

[0105] The total number of OFDM symbols occupied by the SS / PBCH block is (M+N+K). This represents the number of subcarriers included in an RB, for example... X = E + Y + Z.

[0106] In some embodiments, Y = Z, M = N.

[0107] In some embodiments, M = 1, N = 1.

[0108] In some embodiments, D = C + 1.

[0109] In the above, X, E, Y, Z, and L are all positive integers, and C and D are all integers. The values ​​of C and D may be 0 or integers greater than or equal to 1.

[0110] For example, X = 20, Y = 4, Z = 4, E = 12, L = 127, C = 8, D = C + 1.

[0111] For example, X = 20, Y = 4, Z = 4, E = 12, L = 127, D = 8, C = D + 1.

[0112] For example, X = 24, Y = 6, Z = 6, E = 12, L = 127, C = 8, D = C + 1.

[0113] For example, X = 24, Y = 6, Z = 6, E = 12, L = 127, D = 8, C = D + 1.

[0114] For example, X = 24, Y = 4, Z = 4, E = 16, L = 173 or 179 or 181 or 183 or 187 or 191, and the corresponding values ​​of C for L are: C = 9 or 6 or 5 or 4 or 2 or 0, D = C + 1.

[0115] For example, X = 24, Y = 4, Z = 4, E = 16, L = 173 or 179 or 181 or 183 or 187 or 191, and the corresponding values ​​of D for L are: C = 9 or 6 or 5 or 4 or 2 or 0, C = D + 1.

[0116] Taking M=1, N=1, and the SS / PBCH block occupying a total of 7 OFDM symbols as an example, Figure 7 shows a schematic diagram of the SS / PBCH block provided in an exemplary embodiment of this application.

[0117] In Figure 7(a): the SS / PBCH block occupies a total of 7 OFDM symbols. The PSS occupies the first OFDM symbol of the SS / PBCH block, and the SSS occupies the last OFDM symbol of the SS / PBCH block. The PBCH and PBCH DMRS occupy a total of 5 OFDM symbols. The PBCH DMRS occupies the first and fifth symbols of these 5 OFDM symbols (i.e., the PBCH DMRS occupies the second and sixth OFDM symbols of the SS / PBCH block), and the PBCH occupies the second, third, and fourth OFDM symbols of these 5 OFDM symbols (i.e., the PBCH occupies the third, fourth, and fifth OFDM symbols of the SS / PBCH block).

[0118] In Figure 7(b): the SS / PBCH block occupies a total of 7 OFDM symbols. The PSS occupies the first OFDM symbol of the SS / PBCH block, and the SSS occupies the last OFDM symbol of the SS / PBCH block. The PBCH and PBCH DMRS occupy a total of 5 OFDM symbols. The PBCH DMRS occupies the first and fourth symbols of these 5 OFDM symbols (i.e., the PBCH DMRS occupies the second and fifth OFDM symbols in the SS / PBCH block), and the PBCH occupies the second, third, and fifth OFDM symbols of these 5 OFDM symbols (i.e., the PBCH occupies the third, fourth, and sixth OFDM symbols in the SS / PBCH block).

[0119] In Figure 7(c): the SS / PBCH block occupies a total of 7 OFDM symbols. The PSS occupies the first OFDM symbol of the SS / PBCH block, and the SSS occupies the last OFDM symbol of the SS / PBCH block. The PBCH and PBCH DMRS occupy a total of 5 OFDM symbols. The PBCH DMRS occupies the first, third, and fifth symbols of these 5 OFDM symbols (i.e., the PBCH DMRS occupies the second, fourth, and sixth OFDM symbols of the SS / PBCH block), and the PBCH occupies the second and fourth OFDM symbols of these 5 OFDM symbols (i.e., the PBCH occupies the third and fifth OFDM symbols of the SS / PBCH block).

[0120] Scenario 2: The frequency domain sizes of PSS / SSS and PBCH are the same.

[0121] Since the frequency domain size of PSS / SSS, PBCH, and PBCH DMRS is the same, that is, the number of PRBs occupied by the SS / PBCH block on each OFDM symbol is the same, the UE can use PSS / SSS to assist in channel estimation, thereby improving detection performance and reducing PBCH DMRS overhead.

[0122] Figure 8 shows a schematic diagram of the SS / PBCH block provided in an exemplary embodiment of this application.

[0123] The frequency domain size of PBCH and PBCH DMRS is X PRBs, and the frequency domain size of PSS / SSS is X PRBs. The frequency domain positions and sizes of PSS and SSS are the same. The length of the PSS and SSS sequences is L, where L is a positive integer. The lowest subcarrier mapped by PSS / SSS is spaced C subcarriers away from the first subcarrier of the lowest PRB occupied by PBCH or PBCH DMRS, and the highest subcarrier mapped by PSS / SSS is spaced D subcarriers away from the last subcarrier of the highest PRB occupied by PBCH or PBCH DMRS.

[0124] PSS occupies M consecutive OFDM symbols, SSS occupies N consecutive OFDM symbols, and PBCH and PBCH DMRS occupy K OFDM symbols.

[0125] As shown in Figure 8(a), the PSS is located in the first M OFDM symbols of the SS / PBCH block, the SSS is located in the last N OFDM symbols of the SS / PBCH block, and the PBCH and PBCH DMRS symbols are located between the PSS and SSS symbols. As shown in Figure 8(b), the PSS is located in the first M OFDM symbols of the SS / PBCH block, the SSS is located after the PSS and adjacent to the N OFDM symbols of the PSS, and the PBCH and PBCH DMRS symbols are located after the SSS and adjacent to the SSS symbol, the K OFDM symbols of the PBCH and / or PBCH DMRS. As shown in Figure 8(c), the PSS is located in the first M OFDM symbols of the SS / PBCH block, the SSS is located in the middle of multiple OFDM symbols used to transmit PBCH and / or PBCH DMRS, and there are K1 OFDM symbols used to transmit PBCH and / or PBCH DMRS before the SSS symbol, and K2 OFDM symbols used to transmit PBCH and / or PBCH DMRS after the SSS symbol, where K1 + K2 = K.

[0126] The total number of OFDM symbols occupied by the SS / PBCH block is (M+N+K). This represents the number of subcarriers included in an RB, for example...

[0127] In some embodiments, M = N, M = 1, N = 1.

[0128] In some embodiments, D = C + 1.

[0129] In the above, X and L are both positive integers, and C and D are both integers. The values ​​of C and D may be 0 or integers greater than or equal to 1. This application does not impose restrictions on the values ​​of X, L, C, and D, but provides the following examples.

[0130] For example, X = 12, L = 127 or 131 or 133 or 137 or 143, and the corresponding values ​​of C for L are: C = 8 or 6 or 5 or 3 or 0, D = C + 1.

[0131] For example, X = 12, L = 127 or 131 or 133 or 137 or 143, and the corresponding values ​​of D are: D = 8 or 6 or 5 or 3 or 0, C = D + 1.

[0132] For example, X = 15, L = 161 or 163 or 167 or 169 or 173 or 179, and the corresponding values ​​of C for L are: C = 9 or 8 or 6 or 5 or 3 or 0, D = C + 1.

[0133] For example, X = 15, L = 161 or 163 or 167 or 169 or 173 or 179, and the corresponding values ​​of D are: D = 9 or 8 or 6 or 5 or 3 or 0, C = D + 1.

[0134] For example, X = 20, L = 223 or 227 or 229 or 233, and the corresponding values ​​of C for L are: C = 8 or 6 or 5 or 3, D = C + 1.

[0135] For example, X = 20, L = 223 or 227 or 229 or 233, and the corresponding values ​​of D for L are: D = 8 or 6 or 5 or 3, C = D + 1.

[0136] For example, X = 24, L = 269 or 271 or 277 or 281 or 283, and the corresponding values ​​of C for L are: C = 9 or 8 or 5 or 3 or 2, D = C + 1.

[0137] For example, X = 24, L = 269 or 271 or 277 or 281 or 283, and the corresponding values ​​of D for L are: D = 9 or 8 or 5 or 3 or 2, C = D + 1.

[0138] For example, X = 25, L = 281, 283, or 293, and the corresponding values ​​of C for L are: C = 9, 8, or 3, and D = C + 1.

[0139] For example, X = 25, L = 281, 283, or 293, and the corresponding values ​​of D for L are: D = 9, 8, or 3, and C = D + 1.

[0140] For example, X = 30, L = 353 or 359, and the corresponding values ​​of C for L are: C = 3 or 0, D = C + 1.

[0141] For example, X = 30, L = 353 or 359, and the corresponding values ​​of D for L are: D = 3 or 0, C = D + 1.

[0142] Taking M=1, N=1, and the SS / PBCH block occupying a total of 6 OFDM symbols as an example, Figure 9 shows a schematic diagram of the SS / PBCH block provided in an exemplary embodiment of this application.

[0143] In Figure 9(a): SS / PBCH occupies a total of 6 OFDM symbols, PSS occupies the first OFDM symbol of the SS / PBCH block, and SSS occupies the last OFDM symbol of the SS / PBCH block. PBCH and PBCH DMRS occupy the middle 4 OFDM symbols. PBCH DMRS occupies the first and third symbols of these 4 OFDM symbols (i.e., PBCH DMRS occupies the second and fourth OFDM symbols in the SS / PBCH block), and PBCH occupies the second and fourth OFDM symbols of these 4 OFDM symbols (i.e., PBCH occupies the third and fifth OFDM symbols in the SS / PBCH block).

[0144] In Figure 9(b): SS / PBCH occupies a total of 6 OFDM symbols, PSS occupies the first OFDM symbol of the SS / PBCH block, and SSS occupies the last OFDM symbol of the SS / PBCH block. PBCH and PBCH DMRS occupy the middle 4 OFDM symbols. PBCH DMRS occupies the first and fourth of these 4 OFDM symbols (i.e., PBCH DMRS occupies the second and fifth OFDM symbols in the SS / PBCH block), and PBCH occupies the second and third of these 4 OFDM symbols (i.e., PBCH occupies the third and fourth OFDM symbols in the SS / PBCH block).

[0145] In Figure 9(c): SS / PBCH occupies a total of 6 OFDM symbols. PSS occupies the first OFDM symbol of the SS / PBCH block, and SSS occupies the second OFDM symbol of the SS / PBCH block. PBCH and PBCH DMRS occupy the last 4 OFDM symbols. PBCH DMRS occupies the first and third symbols of these 4 OFDM symbols (i.e., PBCH DMRS occupies the third and fifth OFDM symbols in the SS / PBCH block), and PBCH occupies the second and fourth OFDM symbols of these 4 OFDM symbols (i.e., PBCH occupies the fourth and sixth OFDM symbols in the SS / PBCH block).

[0146] In Figure 9(d): SS / PBCH occupies a total of 6 OFDM symbols, PSS occupies the first OFDM symbol of the SS / PBCH block, and SSS occupies the fourth OFDM symbol of the SS / PBCH block. PBCH and PBCH DMRS occupy a total of 4 OFDM symbols, PBCH DMRS occupies the second and fifth OFDM symbols of the SS / PBCH block, and PBCH occupies the third and sixth OFDM symbols of the SS / PBCH block.

[0147] Taking M=N=2 as an example, Figure 10 shows a schematic diagram of the SS / PBCH block provided in an exemplary embodiment of this application.

[0148] In Figure 10(a): SS / PBCH occupies a total of 7 OFDM symbols, PSS occupies the first 2 OFDM symbols of the SS / PBCH block, and SSS occupies the last 2 OFDM symbols of the SS / PBCH block. PBCH and PBCH DMRS occupy the middle 3 OFDM symbols. PBCH DMRS occupies the first of these 3 OFDM symbols (i.e., PBCH DMRS occupies the 3rd OFDM symbol in the SS / PBCH block), and PBCH occupies the 2nd and 3rd OFDM symbols (i.e., PBCH occupies the 4th and 5th OFDM symbols in the SS / PBCH block).

[0149] In Figure 10(b): SS / PBCH occupies a total of 8 OFDM symbols, PSS occupies the first 2 OFDM symbols of the SS / PBCH block, and SSS occupies the last 2 OFDM symbols of the SS / PBCH block. PBCH and PBCH DMRS occupy the middle 4 OFDM symbols. PBCH DMRS occupies the 1st and 3rd symbols of these 4 OFDM symbols (i.e., PBCH DMRS occupies the 3rd and 5th OFDM symbols in the SS / PBCH block), and PBCH occupies the 2nd and 4th OFDM symbols of these 4 OFDM symbols (i.e., PBCH occupies the 4th and 6th OFDM symbols in the SS / PBCH block).

[0150] • Methods of generating synchronization signals

[0151] In some embodiments, the PSS sequence (denoted as d) PSS (n) is determined by the following formula (1): d PSS (n)=1-2x(m) (1) 0≤n<127

[0152] The sequence x(m) is determined based on the following formula: x(i+7)=(x(i+4)+x(i))mod2.

[0153] Furthermore, [x(6) x(5) x(4) x(3) x(2) x(1) x(0)] = [1 1 1 0 1 1 0].

[0154] In formula (1) based on Sure, That is, the physical layer cell identifier (Cell-ID), as shown below:

[0155] in,

[0156] When a terminal device performs a cell search, it first needs to search for synchronization signals to determine the physical layer cell identifier. Optionally, the terminal device first detects the primary synchronization signal (PSS), then the secondary synchronization signal (SSS), and finally the PBCH to obtain system information. When the system supports multiple SS / PBCH block structures, the following information may differ for different SS / PBCH block structures: the size of the frequency domain resources corresponding to the SS / PBCH block; the size of the frequency domain resources corresponding to the PSS; the sequence length corresponding to the PSS; the time domain interval between the PSS and SSS; the number of delay symbols occupied by the PSS; the number of time domain symbols occupied by the SSS; and the number of time domain symbols occupied by the PBCH and PBCH DMRS. If the system supports multiple SS / PBCH block structures, the terminal device needs to detect multiple possible SS / PBCH block structures. This detection method increases the detection complexity and power consumption of the terminal device. Therefore, how to detect multiple SS / PBCH block structures is a problem that needs to be solved.

[0157] Figure 11 illustrates a flowchart of an SS / PBCH block reception method provided in some exemplary embodiments of this application. The method is illustrated illustratively, taking the execution of the method by a terminal device as an example. The method includes:

[0158] Step 1110: Receive the first SS / PBCH block. The structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the first information.

[0159] In some embodiments, the network device generates different synchronization signals for different synchronization signal block structures. These synchronization signal block structures can be simply referred to as SS / PBCH block structures or SSB structures. The following description primarily uses the SS / PBCH block structure as the synchronization signal block structure.

[0160] The SS / PBCH block structure includes a synchronization signal and a PBCH, with the synchronization signal used at least for downlink synchronization. Optionally, the synchronization signal includes a PSS and / or an SSS. The PBCH is used to carry the MIB. The SS / PBCH block structure also includes resources for mapping reference signals (such as PBCH DMRS), which are used by the terminal equipment to detect the PBCH. The DMRS and PBCH can be mapped to the same PRB, i.e., the PRB includes both PBCH and DMRS; or, the DMRS and PBCH can be mapped to different PRBs or different OFDM symbols, i.e., PBCH and DMRS are frequency-division multiplexed or time-division multiplexed.

[0161] In some embodiments, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by first information. Alternatively, the terminal device determines the structure of the first SS / PBCH block corresponding to the first information based on the first information.

[0162] In some embodiments, the system supports at least two SS / PBCH block structures, which may also be referred to as at least two candidate SS / PBCH block structures. The first SS / PBCH block structure is one of the at least two candidate SS / PBCH block structures.

[0163] The aforementioned first SS / PBCH block includes one or more of the following: first PSS, first SSS, and first PBCH.

[0164] In some embodiments, the first information includes one or more of the following:

[0165] • First PSS sequence;

[0166] • The set of frequency domain resources associated with the first SS / PBCH block structure;

[0167] • First configuration information;

[0168] • The time interval between the time domain symbols containing the first PSS and the first SSS;

[0169] • The relative positions between the first PSS and the first SSS;

[0170] • The number of time-domain symbols occupied by the first PSS.

[0171] In some embodiments, the first information includes a first PSS sequence. Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the first PSS sequence. Alternatively, the terminal device receives the first PSS sequence and determines the structure of the first SS / PBCH block corresponding to the first PSS sequence.

[0172] In some embodiments, the first information includes a set of frequency domain resources associated with the first SS / PBCH block structure. For example, the set of frequency domain resources associated with the first SS / PBCH block structure is the carrier in which the first SS / PBCH block structure is located. Optionally, the terminal device receives the first SS / PBCH block, and the first SS / PBCH block structure corresponding to the first SS / PBCH block is indicated by the set of frequency domain resources associated with the first SS / PBCH block structure. It can also be understood that the terminal device determines the first SS / PBCH block structure corresponding to the first SS / PBCH block based on the set of frequency domain resources associated with the first SS / PBCH block structure.

[0173] In some embodiments, the first information includes first configuration information. The first configuration information is used to configure the transmission resources or transmission opportunities corresponding to the first SS / PBCH block structure. Optionally, the terminal device receives the first SS / PBCH block, and the first SS / PBCH block structure corresponding to the first SS / PBCH block is indicated by the first configuration information. Alternatively, the terminal device determines the first SS / PBCH block structure corresponding to the first SS / PBCH block based on the first configuration information.

[0174] In some embodiments, the first information includes the time interval between the time domain symbols where the first PSS and the first SSS are located. Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the time interval between the time domain symbols where the first PSS and the first SSS are located. Alternatively, the terminal device can be understood to determine the structure of the first SS / PBCH block corresponding to the first SS / PBCH block based on the time interval between the time domain symbols where the first PSS and the first SSS are located.

[0175] In some embodiments, the first information includes the relative position between the first PSS and the first SSS. For example, the relative position between the first PSS and the first SSS can be a time-domain relative position. Alternatively, the relative position between the first PSS and the first SSS can also be a frequency-domain relative position. Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the relative position between the first PSS and the first SSS. It can also be understood that the terminal device determines the structure of the first SS / PBCH block corresponding to the first SS / PBCH block based on the relative position between the first PSS and the first SSS.

[0176] In some embodiments, the first information includes the number of time-domain symbols occupied by the first PSS. Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the number of time-domain symbols occupied by the first PSS. Alternatively, the terminal device determines the structure of the first SS / PBCH block corresponding to the first SS / PBCH block based on the number of time-domain symbols occupied by the first PSS.

[0177] It should be noted that the first information may also include at least two types of information. For example, the first information may include the set of frequency domain resources associated with the first PSS sequence and the first SS / PBCH block structure. Another example is that the first information may include the time interval between the time domain symbols containing the first PSS and the first SSS, and the number of time domain symbols occupied by the first PSS, etc. This application does not limit this.

[0178] In summary, the method provided in this application involves a terminal device receiving a first SS / PBCH block. The structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by first information. Different first SS / PBCH block structures correspond to different first information. The terminal device determines the first SS / PBCH block structure corresponding to the first SS / PBCH block from a variety of candidate SS / PBCH block structures supported by the system by performing detection on the first information. Compared to the method in related technologies where the terminal device detects multiple candidate SS / PBCH block structures separately, this method for determining the SS / PBCH block structure can reduce the power consumption of the terminal device and reduce the detection latency.

[0179] Figure 12 illustrates a flowchart of an SS / PBCH block transmission method provided in some exemplary embodiments of this application. The method is illustrated illustratively, taking the execution of the method by a network device as an example. The method includes:

[0180] Step 1210: Send the first SS / PBCH block. The structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the first information.

[0181] In some embodiments, the network device generates different synchronization signals for different synchronization signal block structures. These synchronization signal block structures can be simply referred to as SS / PBCH block structures or SSB structures. The following description primarily uses the SS / PBCH block structure as the synchronization signal block structure.

[0182] The SS / PBCH block structure includes a synchronization signal and a PBCH, with the synchronization signal used at least for downlink synchronization. Optionally, the synchronization signal includes a PSS and / or an SSS. The PBCH is used to carry the MIB. The SS / PBCH block structure also includes resources for mapping reference signals (such as PBCH DMRS), which are used by the terminal equipment to detect the PBCH. The DMRS and PBCH can be mapped to the same PRB, i.e., the PRB includes both PBCH and DMRS; or, the DMRS and PBCH can be mapped to different PRBs or different OFDM symbols, i.e., PBCH and DMRS are frequency-division multiplexed or time-division multiplexed.

[0183] In some embodiments, the network device sends a first SS / PBCH block to the terminal device, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by first information. Alternatively, the terminal device can be understood as determining the structure of the first SS / PBCH block corresponding to the first information based on the first information sent by the network device.

[0184] In some embodiments, the system supports at least two SS / PBCH block structures, which may also be referred to as at least two candidate SS / PBCH block structures. The first SS / PBCH block structure is one of the at least two candidate SS / PBCH block structures.

[0185] The aforementioned first SS / PBCH block includes one or more of the following: first PSS, first SSS, and first PBCH.

[0186] In some embodiments, the first information includes one or more of the following:

[0187] • First PSS sequence;

[0188] • The set of frequency domain resources associated with the first SS / PBCH block structure;

[0189] • First configuration information;

[0190] • The time interval between the time domain symbols containing the first PSS and the first SSS;

[0191] • The relative positions between the first PSS and the first SSS;

[0192] • The number of time-domain symbols occupied by the first PSS.

[0193] In some embodiments, the first information includes a first PSS sequence. Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the first PSS sequence. Alternatively, the terminal device receives the first PSS sequence and determines the structure of the first SS / PBCH block corresponding to the first PSS sequence.

[0194] In some embodiments, the first information includes a set of frequency domain resources associated with the first SS / PBCH block structure. For example, the set of frequency domain resources associated with the first SS / PBCH block structure is the carrier in which the first SS / PBCH block structure is located. Optionally, the terminal device receives the first SS / PBCH block, and the first SS / PBCH block structure corresponding to the first SS / PBCH block is indicated by the set of frequency domain resources associated with the first SS / PBCH block structure. It can also be understood that the terminal device determines the first SS / PBCH block structure corresponding to the first SS / PBCH block based on the set of frequency domain resources associated with the first SS / PBCH block structure.

[0195] In some embodiments, the first information includes first configuration information. The first configuration information is used to configure the transmission resources or transmission opportunities corresponding to the first SS / PBCH block structure. Optionally, the terminal device receives the first SS / PBCH block, and the first SS / PBCH block structure corresponding to the first SS / PBCH block is indicated by the first configuration information. Alternatively, the terminal device determines the first SS / PBCH block structure corresponding to the first SS / PBCH block based on the first configuration information.

[0196] In some embodiments, the first information includes the time interval between the time domain symbols where the first PSS and the first SSS are located. Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the time interval between the time domain symbols where the first PSS and the first SSS are located. Alternatively, the terminal device can be understood to determine the structure of the first SS / PBCH block corresponding to the first SS / PBCH block based on the time interval between the time domain symbols where the first PSS and the first SSS are located.

[0197] In some embodiments, the first information includes the relative position between the first PSS and the first SSS. For example, the relative position between the first PSS and the first SSS can be a time-domain relative position. Alternatively, the relative position between the first PSS and the first SSS can also be a frequency-domain relative position. Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the relative position between the first PSS and the first SSS. It can also be understood that the terminal device determines the structure of the first SS / PBCH block corresponding to the first SS / PBCH block based on the relative position between the first PSS and the first SSS.

[0198] In some embodiments, the first information includes the number of time-domain symbols occupied by the first PSS. Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the number of time-domain symbols occupied by the first PSS. Alternatively, the terminal device determines the structure of the first SS / PBCH block corresponding to the first SS / PBCH block based on the number of time-domain symbols occupied by the first PSS.

[0199] It should be noted that the first information may also include at least two types of information. For example, the first information may include the set of frequency domain resources associated with the first PSS sequence and the first SS / PBCH block structure. Another example is that the first information may include the time interval between the time domain symbols containing the first PSS and the first SSS, and the number of time domain symbols occupied by the first PSS, etc. This application does not limit this.

[0200] In summary, the method provided in this application involves a network device sending a first SS / PBCH block to a terminal device. The structure of the first SS / PBCH block is indicated by first information. Different first SS / PBCH block structures correspond to different first information. The terminal device determines the first SS / PBCH block structure from a variety of candidate SS / PBCH block structures supported by the system by performing detection on the first information. Compared to the method in related technologies where the terminal device detects multiple candidate SS / PBCH block structures separately, this method of determining the SS / PBCH block structure can reduce the power consumption of the terminal device and reduce detection latency.

[0201] Next, based on the embodiments shown in Figures 11 and 12, we will further introduce the first information and the determination of the first SS / PBCH structure based on the first information.

[0202] In some embodiments, the first information includes at least one of the following:

[0203] • First PSS sequence;

[0204] • The set of frequency domain resources associated with the first SS / PBCH block structure;

[0205] • First configuration information;

[0206] • The time interval between the time domain symbols containing the first PSS and the first SSS;

[0207] • The relative positions between the first PSS and the first SSS;

[0208] • The number of time-domain symbols occupied by the first PSS.

[0209] The different scenarios for the first piece of information are described below.

[0210] 1. The first information includes the first PSS sequence.

[0211] In some embodiments, the first information includes a first PSS sequence. Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the first PSS sequence. Alternatively, the terminal device receives the first PSS sequence and determines the structure of the first SS / PBCH block corresponding to the first PSS sequence.

[0212] In some embodiments, a first correspondence exists between the first PSS sequence and the first SS / PBCH block structure. Optionally, the first correspondence is a one-to-one relationship. The first correspondence is determined based on protocol predefinition or based on network device configuration information.

[0213] In some embodiments, the first SS / PBCH block structure is one of at least two candidate SS / PBCH block structures.

[0214] For example, for each of the at least two candidate SS / PBCH block structures, the terminal device calculates the candidate PSS sequence corresponding to each candidate SS / PBCH block structure. After receiving the first PSS sequence, the terminal device performs correlation detection on the first PSS sequence and the candidate PSS sequences to identify which of the candidate PSS sequences the first PSS sequence belongs to. That is, based on the candidate PSS sequence with the highest correlation peak with the first PSS sequence among the candidate PSS sequences, the type of the first SS / PBCH block structure or the index corresponding to the first SS / PBCH block structure is identified.

[0215] In some embodiments, the first PSS sequence is generated based on an influence factor. The influence factor is used to adjust the generation method of the first PSS sequence. Optionally, the influence factor is related to the index corresponding to the first SS / PBCH block structure. By changing the value of the influence factor, different PSS sequences can be generated, thereby improving the diversity and reliability of the synchronization signal sequences.

[0216] It should be noted that there is a first correspondence between the first PSS sequence and the first SS / PBCH block structure, which can also be understood as a first correspondence between the influence factor used to generate the first PSS sequence and the first SS / PBCH block structure.

[0217] In some embodiments, the influencing factor includes at least one of a first numerical value, a first coefficient, and an exponential function. The first numerical value influences parameter m in the formula for generating the first PSS sequence, the first coefficient influences the coefficient of the first identifier in parameter m, and the exponential function influences parameter x(m) or 1-2x(m) in the formula for generating the first PSS sequence. Here, x(m) represents the second sequence, m is the sample index of the second sequence, and 1-2x(m) represents the third sequence.

[0218] In some embodiments, the impact factor includes a first numerical value. In other embodiments, the impact factor includes a first coefficient. In still other embodiments, the impact factor includes an exponential function. In yet another embodiment, the impact factor includes both a first numerical value and a first coefficient. In still another embodiment, the impact factor includes both a first coefficient and an exponential function. In yet another embodiment, the impact factor includes a first numerical value, a first coefficient, and an exponential function. This application does not limit the scope of the invention.

[0219] Optionally, if the influence factor includes a first value, the first PSS sequence is generated based on the second sequence, and the sample index of the second sequence is generated based on the first value. This can also be understood as the first PSS sequence being related to the value of the first value.

[0220] Optionally, if the impact factor includes a first coefficient, the first PSS sequence is generated based on the second sequence, and the sample point index of the second sequence is generated based on the first coefficient. This can also be understood as the first PSS sequence being related to the value of the first coefficient.

[0221] Optionally, when the influence factor includes an exponential function, the exponential factor of the exponential function is related to the index corresponding to the first SS / PBCH block structure, and the first PSS sequence is generated based on the second sequence. This can also be understood as the first PSS sequence being related to the exponential factor of the exponential function.

[0222] Optionally, when the influence factor includes a first numerical value and a first coefficient, the first PSS sequence is generated based on the second sequence, and the sample index of the second sequence is generated based on the first numerical value and the first coefficient. This can also be understood as the first PSS sequence being related to the values ​​of the first numerical value and the first coefficient.

[0223] Optionally, when the influence factor includes an exponential function and a first coefficient, the first PSS sequence is generated based on the second sequence, the sample index of the second sequence is generated based on the first coefficient, and the exponential factor of the exponential function is related to the index corresponding to the first SS / PBCH block structure. This can also be understood as the first PSS sequence being related to the value of the first coefficient and the exponential factor of the exponential function.

[0224] In some embodiments, the exponential factor of the exponential function is related to the product of the index corresponding to the first SS / PBCH block structure and the sample index of the first PSS sequence; or, the exponential factor of the exponential function is related to the product of the index corresponding to the first SS / PBCH block structure and the sample index of the second sequence.

[0225] The second sequence mentioned above is a pseudo-random sequence. For example, the second sequence is an m-sequence.

[0226] The different scenarios of the influencing factor are introduced below.

[0227] 1.1 The first PSS sequence is generated based on the impact factor, where the impact factor includes at least the first value.

[0228] In some embodiments, the first PSS sequence is generated based on an impact factor, which includes at least a first numerical value.

[0229] In some embodiments, the impact factor includes at least a first value. Optionally, the impact factor includes only the first value. In the case where the impact factor includes only the first value, the first PSS sequence is generated based on the second sequence, and the sample index of the second sequence is generated based on the first value.

[0230] In some embodiments, the sample index of the second sequence is generated based on the first numerical value. This can also be understood as the first PSS sequence being related to the value of the first numerical value. When the value of the first numerical value is different, the sample index of the second sequence will also be different accordingly.

[0231] In some embodiments, the impact factor includes at least a first numerical value. Optionally, the impact factor also includes a first numerical value and a first coefficient. When the impact factor includes a first numerical value and a first coefficient, the first PSS sequence is generated based on the second sequence, and the sample index of the second sequence is generated based on the first numerical value and the first coefficient.

[0232] In some embodiments, the sample index of the second sequence is generated based on the first numerical value and the first coefficient. This can also be understood as the first PSS sequence being related to the values ​​of the first numerical value and the first coefficient. When the values ​​of the first numerical value and the first coefficient are different, the sample index of the second sequence will also be different accordingly.

[0233] In some embodiments, the sample index of the second sequence is used to indicate the position of each sample in the second sequence. Alternatively, it can be understood as indicating the m-th value among the M values ​​included in the second sequence. The sample index of the second sequence can also be called the position index of the second sequence.

[0234] The following is an illustrative example of the impact factor including the first value, but this does not constitute a limitation on the first value.

[0235] 1.1.1 The first value is A

[0236] In some embodiments, the sample index m of the second sequence is determined based on the sum of the following three factors: the sample index n of the first PSS sequence, the first coefficient K, and the first identifier. The product of , the first value A.

[0237] In some embodiments, the influence factor includes a first numerical value A and a first coefficient K. Here, A is an integer greater than or equal to 0, and K is an integer greater than 0. The first coefficient K is determined based on predefined protocol information, or the first coefficient K is determined based on the sequence length L of the first PSS sequence. First identifier Based on physical cell identifier Confirmed. The first value A is determined based on predefined information from the protocol.

[0238] In some embodiments, the sequence length L of the first PSS sequence can be 127. In some embodiments, the sequence length L of the first PSS sequence can be 179. This application does not limit the sequence length L of the first PSS sequence. Optionally, the PSS sequence length L corresponding to different SS / PBCH blocks may be different.

[0239] In some embodiments, the sample index n of the first PSS sequence is used to indicate the position of each sample in the first PSS sequence. It can also be understood that the sample index n of the first PSS sequence is used to indicate the nth value among the L values ​​included in the first PSS sequence. The sample index n of the first PSS sequence can also be called the position index of the first PSS sequence.

[0240] For example, take the first PSS sequence with a sequence length L equal to 127. The first PSS sequence includes 127 values, and the sample index n of the first PSS sequence is in the range of [0, 126], that is, L = 127, and n is in the range of [0, 126].

[0241] In some embodiments, the first PSS sequence is generated based on the second sequence x(m). Optionally, the first PSS sequence is determined based on formula (2): d PSS (n)=1-2x(m) (2) 0≤n <L

[0242] Where, d PSS (n) represents the first PSS sequence, x(m) represents the second sequence, m represents the sample index of the second sequence x(m), n represents the sample index of the first PSS sequence, and K represents the first coefficient. This is the first identifier, which is based on the physical cell identifier. Let A be the first value and L be the sequence length of the first PSS sequence.

[0243] In some embodiments, the first coefficient K is determined based on the sequence length L of the first PSS sequence as an example. Optionally, the first coefficient K is a prime number or integer greater than the first quotient; or, the first coefficient K is a prime number or integer closest to the first quotient. The first quotient is the value obtained by using the sequence length L of the first PSS sequence as the dividend and a first constant as the divisor.

[0244] For example, the first constant is 3, and the first coefficient K is a prime number (or integer) greater than L / 3; or, the first coefficient K is the prime number (or integer) closest to L / 3. For example, the sequence length of the first PSS sequence is L = 127, and the first coefficient K = 43. Another example is L = 179, K = 61.

[0245] In some embodiments, the sample index m of the second sequence depends on the first value A and / or the first coefficient K.

[0246] 1) The sample index m of the second sequence depends on the first value A.

[0247] In some embodiments, when the first coefficient is 43, the sample index m of the second sequence depends only on the first value A, which can also be understood as the first PSS sequence being only related to the first value A.

[0248] In some embodiments, when the sample index m of the second sequence depends only on the first value A, the number of values ​​of the first value A is equal to the number of types of candidate SS / PBCH block structures.

[0249] For example, when the first coefficient is 43, if the terminal device supports one type of SS / PBCH block structure, that is, if the number of candidate SS / PBCH block structure types is one, the first value A is 0. In this case, the above formula (2) is the same as formula (1).

[0250] For example, when the first coefficient is 43, and there are two types of candidate SS / PBCH block structures, the first value A has two possible values. Taking the first value A as 0 and 22 as examples: when the candidate SS / PBCH block structure is the first type, the first value A is 0; when the candidate SS / PBCH block structure is the second type, the first value A is 22.

[0251] 2) The sample index m of the second sequence depends on the first coefficient K.

[0252] In some embodiments, when the first value A is 0, the sample index m of the second sequence depends only on the first coefficient K, which can also be understood as the first PSS sequence being only related to the first coefficient K.

[0253] In some embodiments, when the sample index m of the second sequence depends only on the first coefficient K, the number of values ​​of the first coefficient K is equal to the number of types of candidate SS / PBCH block structures.

[0254] For example, when the first value A is 0, if the terminal device supports one type of SS / PBCH block structure, that is, if the number of candidate SS / PBCH block structure types is one, the first coefficient K is 43. In this case, the above formula (2) is the same as formula (1).

[0255] For example, when the first value A is 0, and there are two types of candidate SS / PBCH block structures, the first coefficient K has two possible values. Taking values ​​of 43 and 61 as examples: when the candidate SS / PBCH block structure is the first type, the first coefficient K is 43 (in this case, the sequence length L of the first PSS sequence is 127); when the candidate SS / PBCH block structure is the second type, the first coefficient K is 61 (in this case, the sequence length L of the first PSS sequence is 179).

[0256] 3) The sample index m of the second sequence depends on the first value A and the first coefficient K.

[0257] In some embodiments, when the first coefficient is a value other than 43 and the first value A is a value other than 0, the sample index m of the second sequence depends on both the first value A and the first coefficient K. It can also be understood that the first PSS sequence is related to both the first value A and the first coefficient K.

[0258] In some embodiments, when the sample index m of the second sequence depends on both the first value A and the first coefficient K, the number of possible combinations of the first value A and the first coefficient K is equal to the number of types of candidate SS / PBCH block structures.

[0259] For example, when there are two types of candidate SS / PBCH block structures, the number of possible combinations of the first value A and the first coefficient K is two. Let's take the first combination as: first value A = 0, first coefficient K = 61; and the second combination as: first value A = 31, first coefficient K = 61. When the candidate SS / PBCH block structure is the first type, the first value A is 0, and the first coefficient K is 61. When the candidate SS / PBCH block structure is the second type, the first value A is 31, and the first coefficient K is 61.

[0260] 1.1.2 The first value is B·i

[0261] In some embodiments, the sample index m of the second sequence is determined based on the sum of the following three factors: the sample index n of the first PSS sequence, the first coefficient K, and the first identifier. The product of , the first value B·i.

[0262] In some embodiments, the influence factor includes a first numerical value B·i and a first coefficient K. Here, B is an integer greater than 0, and K is an integer greater than 0. The first coefficient K is determined based on protocol predefined information, or the first coefficient K is determined based on the sequence length L of the first PSS sequence. The first numerical value B·i is determined based on the product of the index i of the first SS / PBCH block structure and a first preset value B, wherein the first preset value B is determined based on protocol predefined information.

[0263] In some embodiments, the sample index n of the first PSS sequence is used to indicate the position of each sample in the first PSS sequence. It can also be understood that the sample index n of the first PSS sequence is used to indicate the nth value among the L values ​​included in the first PSS sequence. The sample index n of the first PSS sequence can also be called the position index of the first PSS sequence.

[0264] In some embodiments, the first PSS sequence is generated based on the second sequence x(m). Optionally, the first PSS sequence is determined based on formula (3): dPSS (n)=1-2x(m) (3) 0≤n <L

[0265] Where, d PSS (n) represents the first PSS sequence, x(m) represents the second sequence, m represents the sample index of the second sequence x(m), n represents the sample index of the first PSS sequence, and K represents the first coefficient. This is the first identifier, which is based on the physical cell identifier. Let B·i be the first value, L be the sequence length of the first PSS sequence, and i be the index of the first SS / PBCH block structure.

[0266] In some embodiments, the first coefficient K is determined based on the sequence length L of the first PSS sequence as an example. Optionally, the first coefficient K is a prime number or integer greater than the first quotient; or, the first coefficient K is a prime number or integer closest to the first quotient. The first quotient is the value obtained by using the sequence length L of the first PSS sequence as the dividend and a first constant as the divisor.

[0267] For example, the first constant is 3, and the first coefficient K is a prime number (or integer) greater than L / 3; or, the first coefficient K is the prime number (or integer) closest to L / 3. For example, the sequence length of the first PSS sequence is L = 127, and the first coefficient K = 43. Another example is L = 179, K = 61.

[0268] In some embodiments, the influence factor includes a first value B·i. The first value B·i is determined based on the product of the index i of the first SS / PBCH block structure and a first preset value B. Wherein, i is the index of the first SS / PBCH block structure, B is the first preset value, and B is an integer greater than or equal to 0.

[0269] In some embodiments, the index i of the first SS / PBCH block structure takes values ​​ranging from 0 to N-1. Optionally, N is determined based on the number of candidate SS / PBCH block structure types; or, N is related to the number of candidate SS / PBCH block structure types.

[0270] In some embodiments, N is determined based on the number of candidate SS / PBCH block structure types; that is, N is the number of candidate SS / PBCH block structure types. For example, when the number of candidate SS / PBCH block structure types is 7, N can be represented as 7.

[0271] In some embodiments, N is related to the number of candidate SS / PBCH block structure types. For example, based on bit information indication, when the number of candidate SS / PBCH block structure types is 7, N can be represented as 2. 3 -1.

[0272] For example, when there is only one type of candidate SS / PBCH block structure, the index of the first SS / PBCH block structure is 0. When there are two types of candidate SS / PBCH block structures, the indices of the first SS / PBCH block structure are 0 and 1. When there are three types of candidate SS / PBCH block structures, the indices of the first SS / PBCH block structure are 0, 1, and 2. When there are four types of candidate SS / PBCH block structures, the indices of the first SS / PBCH block structure are 0, 1, 2, and 3. This application does not limit this.

[0273] In some embodiments, the sample index m of the second sequence depends on the first value B·i and / or the first coefficient K.

[0274] In some embodiments, when the first coefficient is 43, the sample index m of the second sequence depends only on the first value B·i, which can also be understood as the first PSS sequence being only related to the first value B·i.

[0275] In some embodiments, when the first value B·i is 0, the sample index m of the second sequence depends only on the first coefficient K, which can also be understood as the first PSS sequence being only related to the first coefficient K.

[0276] In some embodiments, when the first coefficient is any value other than 43 and the first value B·i is any value other than 0, the sample index m of the second sequence depends on both the first value B·i and the first coefficient K. It can also be understood that the first PSS sequence is related to both the first value B·i and the first coefficient K.

[0277] For details, please refer to the relevant introduction in "1.1.1 The first value is A" above, which states that "the sample index m of the second sequence depends on the first value A and / or the first coefficient K". It will not be repeated here.

[0278] 1.1.3 The first value is C·i

[0279] In some embodiments, the sample index m of the second sequence is determined based on the sum of the following two: the sample index n of the first PSS sequence, the first numerical value C·i, and the first identifier. The product of.

[0280] In some embodiments, the influence factor includes a first value C·i. Here, C is an integer greater than 0, and the first value C·i is determined based on the product of the index i of the first SS / PBCH block structure and a second preset value C, which is determined based on protocol predefined information.

[0281] In some embodiments, the sample index n of the first PSS sequence is used to indicate the position of each sample in the first PSS sequence. It can also be understood that the sample index n of the first PSS sequence is used to indicate the nth value among the L values ​​included in the first PSS sequence. The sample index n of the first PSS sequence can also be called the position index of the first PSS sequence.

[0282] In some embodiments, the first PSS sequence is generated based on the second sequence x(m). Optionally, the first PSS sequence is determined based on formula (4): d PSS (n)=1-2x(m) (4) 0≤n <L

[0283] Where, d PSS Let (n) be the first PSS sequence, x(m) be the second sequence, m be the sample index of the second sequence x(m), and n be the sample index of the first PSS sequence. This is the first identifier, which is based on the physical cell identifier. Let C·i be the first value, L be the sequence length of the first PSS sequence, and i be the index of the first SS / PBCH block structure.

[0284] In some embodiments, the influence factor includes a first value C·i. The first value C·i is determined based on the product of the index i of the first SS / PBCH block structure and a second preset value C. Wherein, i is the index of the first SS / PBCH block structure, C is the second preset value, and C is an integer greater than 0.

[0285] In some embodiments, the value range corresponding to index i of the first SS / PBCH block structure is 1 to N; or, the value range corresponding to index i of the first SS / PBCH block structure is 0 to N-1.

[0286] Optionally, N is determined based on the number of candidate SS / PBCH block structure types; or, N is related to the number of candidate SS / PBCH block structure types. For example, when the number of candidate SS / PBCH block structure types is 7, N can be represented as 7. As another example, based on bit information indication, when the number of candidate SS / PBCH block structure types is 7, N can be represented as 2. 3 -1.

[0287] For example, when there is only one type of candidate SS / PBCH block structure, the index i of the first SS / PBCH block structure is 1 or 0. When there are two types of candidate SS / PBCH block structures, the index i of the first SS / PBCH block structure is 1 and 2; or, the index i of the first SS / PBCH block structure is 0 and 1. When there are three types of candidate SS / PBCH block structures, the index i of the first SS / PBCH block structure is 1, 2, and 3; or, the index i of the first SS / PBCH block structure is 0, 1, and 2. When there are four types of candidate SS / PBCH block structures, the index i of the first SS / PBCH block structure is 1, 2, 3, and 4; or, the index i of the first SS / PBCH block structure is 0, 1, 2, and 3. This application does not limit this.

[0288] In some embodiments, the second preset value C is a prime number or integer greater than the second quotient; or, the second preset value C is a prime number or integer closest to the second quotient. The second quotient is the value obtained by using the sequence length of the first PSS sequence as the dividend and the product of the first constant and N as the divisor.

[0289] For example, the first constant is 3, and the second preset value C is a prime number (or integer) greater than L / (3N); or, the second preset value C is a prime number (or integer) closest to L / (3N).

[0290] In some embodiments, the sample index m of the second sequence depends on the first value C·i. It can also be understood that the first PSS sequence is only related to the first value B·i.

[0291] For details, please refer to the relevant introduction in "1.1.1 The first value is A" above, which states that "the sample index m of the second sequence depends on the first value A and / or the first coefficient K". It will not be repeated here.

[0292] 1.2 The first PSS sequence is generated based on the impact factor, which includes at least the case of an exponential function.

[0293] In some embodiments, the first PSS sequence is generated based on an impact factor, which includes at least an exponential function.

[0294] In some embodiments, the impact factor includes at least an exponential function. Optionally, the impact factor includes only an exponential function. In the case where the impact factor includes only an exponential function, the exponential factor of the exponential function is related to the index corresponding to the first SS / PBCH block structure, and the first PSS sequence is generated based on the second sequence.

[0295] In some embodiments, the impact factor includes at least an exponential function. Optionally, the impact factor also includes an exponential function and a first coefficient. When the impact factor includes an exponential function and a first coefficient, the exponential factor of the exponential function is related to the index corresponding to the first SS / PBCH block structure, the first PSS sequence is generated based on the second sequence, and the sample index of the second sequence is generated based on the first coefficient.

[0296] Optionally, the exponential function is an exponential function that acts directly on the second sequence. The first PSS sequence is determined based on the difference between the following two factors: a constant 1, and the product of the exponential function and the second sequence.

[0297] Optionally, the exponential function is an exponential function that indirectly acts on the second sequence; that is, the exponential function acts on the third sequence, which is the sequence obtained by performing the operation on the second sequence. The third sequence can also be called the basic PSS sequence. The first PSS sequence is generated by multiplying the third sequence and the exponential function.

[0298] The following sections explain the effect of the exponential function on the second or third sequence, respectively.

[0299] 1.2.1 The exponential function is the exponential function of the second sequence.

[0300] In some embodiments, the influence factor includes an exponential function e j2πin / N or e j2πim / N And including the first coefficient K. The exponential function is the exponential function of the second sequence x(m). The exponential function e j2πin / N or e j2πim / N The exponential factor is related to the index i corresponding to the first SS / PBCH block structure.

[0301] Where j is an imaginary number, i is the index corresponding to the first SS / PBCH block structure, and n is the first PSS sequence d. PSS The sample index of (n) is the sample index of the second sequence x(m), and N is determined based on the number of types of candidate SS / PBCH block structures, or N is related to the number of types of candidate SS / PBCH block structures.

[0302] The first coefficient K is determined based on predefined protocol information or based on the sequence length L of the first PSS sequence.

[0303] In some embodiments, the first PSS sequence is generated based on the second sequence x(m), and the first PSS sequence is determined based on the difference between the following two: a constant 1, and an exponential function (i.e., e^(-1 / m)). j2πin / N or e j2πim / N The product of the first sequence x(m) and the second sequence x(m).

[0304] Exponential function e j2πin / K or ej2πim / N It acts on the second sequence x(m), and by affecting the generation of the second sequence x(m), it affects the generation of the first PSS sequence.

[0305] Optionally, the exponential function e j2πin / N The exponential factor is related to the index i of the first SS / PBCH block structure and the sample index n of the first PSS sequence; or, the exponential function e j2πim / N The exponential factor is related to the index i of the first SS / PBCH block structure and the sample index m of the second sequence.

[0306] 1.2.1.1 The exponential function is related to the sample index n of the first PSS sequence.

[0307] In some embodiments, the influence factor includes an exponential function e j2πin / N And including the first coefficient K. Wherein, the exponential function e j2πin / N The exponential factor j2πin / N is related to the index i corresponding to the first SS / PBCH block structure. The first coefficient K is used to influence the sample index m of the second sequence x(m).

[0308] In some embodiments, the first PSS sequence is determined based on the difference between the following two: a constant 1 and an exponential function e. j2πin / N The product of the first PSS sequence and the second sequence x(m). The sample index m of the second sequence is determined based on the sum of the following two: the sample index n of the first PSS sequence, the first coefficient K, and the first identifier. The product of.

[0309] In some embodiments, the first PSS sequence is generated based on the second sequence x(m). Optionally, the first PSS sequence is determined based on formula (5): d PSS (n)=1-2x(m)e j2πin / N (5) 0≤n <L

[0310] Where, d PSS (n) is the first PSS sequence, x(m) is the second sequence, and e j2πin / N Let be an exponential function, m be the sample index of the second sequence x(m), n be the sample index of the first PSS sequence, and K be the first coefficient. This is the first identifier, which is based on the physical cell identifier. Let L be the sequence length of the first PSS sequence and i be the index of the first SS / PBCH block structure.

[0311] In some embodiments, the index i of the first SS / PBCH block structure takes values ​​ranging from 0 to N-1. Here, N is determined based on the number of candidate SS / PBCH block structure types, or N is related to the number of candidate SS / PBCH block structure types.

[0312] The following example illustrates how the first coefficient K is determined based on the sequence length L of the first PSS sequence. Optionally, the first coefficient K is a prime number or integer greater than the first quotient; or, the first coefficient K is a prime number or integer closest to the first quotient. The first quotient is the value obtained by using the sequence length L of the first PSS sequence as the dividend and a first constant as the divisor.

[0313] For example, the first constant is 3, and the first coefficient K is a prime number (or integer) greater than L / 3; or, the first coefficient K is the prime number (or integer) closest to L / 3. For example, the sequence length of the first PSS sequence is L = 127, and the first coefficient K = 43. Another example is L = 179, K = 61.

[0314] 1.2.1.2 The exponential function is related to the sample index m of the second sequence.

[0315] In some embodiments, the influence factor includes an exponential function e j2πim / N And including the first coefficient K. Wherein, the exponential function e j2πim / N The exponential factor j2πim / N is related to the index i corresponding to the first SS / PBCH block structure. The first coefficient K is used to influence the sample index m of the second sequence x(m).

[0316] In some embodiments, the first PSS sequence is determined based on the difference between the following two: a constant 1 and an exponential function e. j2πim / N The product of the first PSS sequence and the second sequence x(m). The sample index m of the second sequence is determined based on the sum of the following two: the sample index n of the first PSS sequence, the first coefficient K, and the first identifier. The product of.

[0317] In some embodiments, the first PSS sequence is generated based on the second sequence x(m). Optionally, the first PSS sequence is determined based on formula (6): d PSS (n)=1-2x(m)e j2πim / N (6) 0≤n <L

[0318] Where, d PSS (n) is the first PSS sequence, x(m) is the second sequence, and e j2πim / N Let K be an exponential function, m be the sample index of the second sequence x(m), and K be the first coefficient. This is the first identifier, which is based on the physical cell identifier. Let L be the sequence length of the first PSS sequence and i be the index of the first SS / PBCH block structure.

[0319] In some embodiments, the index i of the first SS / PBCH block structure takes values ​​ranging from 0 to N-1. Here, N is determined based on the number of candidate SS / PBCH block structure types, or N is related to the number of candidate SS / PBCH block structure types.

[0320] The following example illustrates how the first coefficient K is determined based on the sequence length L of the first PSS sequence. Optionally, the first coefficient K is a prime number or integer greater than the first quotient; or, the first coefficient K is a prime number or integer closest to the first quotient. The first quotient is the value obtained by using the sequence length L of the first PSS sequence as the dividend and a first constant as the divisor.

[0321] For example, the first constant is 3, and the first coefficient K is a prime number (or integer) greater than L / 3; or, the first coefficient K is the prime number (or integer) closest to L / 3. For example, the sequence length of the first PSS sequence is L = 127, and the first coefficient K = 43. Another example is L = 179, K = 61.

[0322] 1.2.2 Exponential functions for third sequences

[0323] In some embodiments, the influence factor includes an exponential function e j2πin / N or e j2πim / N And including the first coefficient K. The exponential function is the exponential function of the third sequence 1-2x(m). The third sequence 1-2x(m) is the sequence after performing the operation on the second sequence x(m), and the third sequence 1-2x(m) can also be called the basic PSS sequence.

[0324] Where j is an imaginary number, i is the index corresponding to the first SS / PBCH block structure, and n is the first PSS sequence d. PSS The sample index of (n) is the sample index of the second sequence x(m), and N is determined based on the number of types of candidate SS / PBCH block structures, or N is related to the number of types of candidate SS / PBCH block structures.

[0325] The first coefficient K is determined based on predefined protocol information or based on the sequence length L of the first PSS sequence.

[0326] In some embodiments, the first PSS sequence is formed by the third sequence 1-2x(m) and the exponential function e. j2πin / N or e j2πim / NThe product of the two is generated. The third sequence 1-2x(m) is determined based on the difference between the following two: a constant 1, and the product of the second coefficient and the second sequence x(m). The second coefficient is determined based on predefined protocol information.

[0327] Exponential function e j2πin / N or e j2πim / N It acts on the third sequence 1-2x(m), and by affecting the generation of the third sequence 1-2x(m), it affects the generation of the first PSS sequence.

[0328] Optionally, the exponential function e j2πin / N The exponential factor is related to the index i of the first SS / PBCH block structure and the sample index n of the first PSS sequence; or, the exponential function e j2πim / N The exponential factor is related to the index i of the first SS / PBCH block structure and the sample index m of the second sequence.

[0329] 1.2.2.1 The exponential function is related to the sample index n of the first PSS sequence.

[0330] In some embodiments, the influence factor includes an exponential function e j2πin / N And including the first coefficient K. Wherein, the exponential function e j2πin / N The exponential factor j2πin / N is related to the index i corresponding to the first SS / PBCH block structure. The first coefficient K is used to influence the sample index m of the second sequence x(m).

[0331] In some embodiments, the first PSS sequence is determined based on the product of the following two: the third sequence 1-2x(m), and the exponential function e j2πin / N .

[0332] In some embodiments, the first PSS sequence is generated based on the third sequence 1-2x(m). Optionally, the first PSS sequence is determined based on formula (7): d PSS (n)=(1-2x(m))e j2πin / N (7) 0≤n <L

[0333] Where, d PSS (n) is the first PSS sequence, 1-2x(m) is the third sequence, and e j2πin / N Let be an exponential function, m be the sample index of the second sequence x(m), n be the sample index of the first PSS sequence, and K be the first coefficient. This is the first identifier, which is based on the physical cell identifier. Let L be the sequence length of the first PSS sequence and i be the index of the first SS / PBCH block structure.

[0334] In some embodiments, the index i of the first SS / PBCH block structure takes values ​​ranging from 0 to N-1. Here, N is determined based on the number of candidate SS / PBCH block structure types, or N is related to the number of candidate SS / PBCH block structure types.

[0335] The following example illustrates how the first coefficient K is determined based on the sequence length L of the first PSS sequence. Optionally, the first coefficient K is a prime number or integer greater than the first quotient; or, the first coefficient K is a prime number or integer closest to the first quotient. The first quotient is the value obtained by using the sequence length L of the first PSS sequence as the dividend and a first constant as the divisor.

[0336] 1.2.2.2 The exponential function is related to the sample index m of the second sequence.

[0337] In some embodiments, the influence factor includes an exponential function e j2πim / N And including the first coefficient K. Wherein, the exponential function e j2πim / N The exponential factor j2πim / N is related to the index i corresponding to the first SS / PBCH block structure. The first coefficient K is used to influence the sample index m of the second sequence x(m).

[0338] In some embodiments, the first PSS sequence is determined based on the product of the following two: the third sequence 1-2x(m), and the exponential function e j2πim / N .

[0339] In some embodiments, the first PSS sequence is generated based on the third sequence 1-2x(m). Optionally, the first PSS sequence is determined based on formula (8): d PSS (n)=(1-2x(m))e j2πim / N (8) 0≤n <L

[0340] Where, d PSS (n) is the first PSS sequence, x(m) is the second sequence, and e j2πim / N Let be an exponential function, m be the sample index of the second sequence x(m), n be the sample index of the first PSS sequence, and K be the first coefficient. This is the first identifier, which is based on the physical cell identifier. Let L be the sequence length of the first PSS sequence and i be the index of the first SS / PBCH block structure.

[0341] In some embodiments, the exponential function is e j2πim / Nj is an imaginary number, i is the index corresponding to the first SS / PBCH block structure, m is the sample index of the second sequence, and K is the number of candidate SS / PBCH block structure types.

[0342] In some embodiments, the index i of the first SS / PBCH block structure takes values ​​ranging from 0 to N-1. Here, N is determined based on the number of candidate SS / PBCH block structure types, or N is related to the number of candidate SS / PBCH block structure types.

[0343] The following example illustrates how the first coefficient K is determined based on the sequence length L of the first PSS sequence. Optionally, the first coefficient K is a prime number or integer greater than the first quotient; or, the first coefficient K is a prime number or integer closest to the first quotient. The first quotient is the value obtained by using the sequence length L of the first PSS sequence as the dividend and a first constant as the divisor.

[0344] It should be noted that, in some embodiments, the influencing factor may also include a first numerical value, a first coefficient, and an exponential function. The first numerical value is any one of A, B·i, and C·i. The exponential function is ei j2πin / N and e j2πim / N Any one of them. This application makes no limitation thereto.

[0345] In some embodiments, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by a first PSS sequence. Alternatively, the terminal device receives the first PSS sequence and determines the structure of the first SS / PBCH block corresponding to the first PSS sequence.

[0346] In some embodiments, the first PSS sequence is generated based on one of the formulas (1) to (8) above. PSS sequences for different SS / PBCH block structures can be generated using different formulas (1) to (8) above. The terminal device determines the corresponding first PSS sequence generation method based on the first SS / PBCH block structure configured by the system, and performs PSS sequence detection based on the corresponding first PSS sequence, thereby determining the corresponding first SS / PBCH block structure.

[0347] For example, the system supports two candidate SS / PBCH block structures, as shown in Figure 2 and Figure 3(e), respectively. In both candidate SS / PBCH block structures, the PSS sequence length L is equal to 127. The PSS sequence is generated as shown in formula (3), where L = 127, K = 43, B = 22 (or B = 23), and the value of i is 0 and 1, respectively.

[0348] For example, the system supports two candidate SS / PBCH block structures, as shown in Figure 2 and Figure 9(a), respectively. In Figure 9(a), X = 15, L = 179, C = 0, and D = 1. The PSS sequence of the SS / PBCH block structure shown in Figure 2 is generated according to formula (1), and the PSS sequence of the SS / PBCH block structure shown in Figure 9(a) is generated according to formula (2), where L = 179, K = 61, and A = 0.

[0349] 2. The first information includes the set of frequency domain resources associated with the first SS / PBCH block structure.

[0350] In some embodiments, the first information includes a set of frequency domain resources associated with the first SS / PBCH block structure. Optionally, the terminal device receives a first SS / PBCH block, and the first SS / PBCH block structure corresponding to the first SS / PBCH block is indicated by the set of frequency domain resources associated with the first SS / PBCH block structure. Alternatively, the terminal device determines the first SS / PBCH block structure corresponding to the first SS / PBCH block based on the set of frequency domain resources associated with the first SS / PBCH block structure.

[0351] In some embodiments, the set of frequency domain resources associated with the first SS / PBCH block structure is: the carrier in which the first SS / PBCH block structure is located; or, the bandwidth part (BWP) in which the first SS / PBCH block structure is located.

[0352] 2.1 The frequency domain resource set is the carrier where the first SS / PBCH block structure is located.

[0353] In some embodiments, the first information includes the carrier in which the first SS / PBCH block structure is located. That is, the set of frequency domain resources associated with the first SS / PBCH block structure is the carrier in which the first SS / PBCH block structure is located.

[0354] In some embodiments, the network device supports a multi-carrier system, and the network device is configured to transmit corresponding SS / PBCH block structures on each carrier. Optionally, the SS / PBCH block structures transmitted on different carriers are different.

[0355] For example, the system supports three carriers, each of which can correspond to a component carrier (CC). That is, the three carriers are transmitted in a carrier aggregation (CA) manner. Each component carrier has a certain bandwidth, for example, CC1 has a bandwidth of 5MHz, CC2 has a bandwidth of 10MHz, and CC3 has a bandwidth of 15MHz.

[0356] For example, the system supports three carriers, which are three carriers belonging to the same cell. That is, one cell includes three carriers, which can be called a Single Cell Multiple Carrier (SCMC) system or a Virtual Cell. For example, cell 1 is associated with three carriers, and the frequency domain range of cell 1 corresponds to the sum of the frequency domain ranges of the three carriers.

[0357] Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the carrier in which the structure of the first SS / PBCH block is located. Alternatively, the terminal device determines the structure of the first SS / PBCH block corresponding to the first SS / PBCH block based on the carrier in which the structure of the first SS / PBCH block is located.

[0358] In some embodiments, a second correspondence exists between the carrier containing the first SS / PBCH block structure and the first SS / PBCH block structure itself. Optionally, the second correspondence is a one-to-one relationship, meaning that the first SS / PBCH block structures transmitted on different carriers are different; alternatively, the second correspondence is a many-to-one relationship, meaning that the first SS / PBCH block structure can be transmitted on one or more carriers, and different SS / PBCH block structures are transmitted on different carriers. The second correspondence is determined based on protocol predefinition or based on network device configuration information.

[0359] In some embodiments, the carrier in which the first SS / PBCH block structure is located can be a component carrier or a carrier within the same cell. This application does not limit this.

[0360] For example, referring to Figure 13, the following explanation is given using multiple carriers within the same cell. The first cell is associated with a first carrier, a second carrier, and a third carrier. There is a guard band between the first and second carriers, and a guard band between the second and third carriers. The frequency domain range of the first cell corresponds to the sum of the frequency domain ranges of the three carriers and the guard bands. A first type of SS / PBCH block structure (or a first candidate SS / PBCH block structure) is transmitted on the first carrier of the first cell; a second type of SS / PBCH block structure is transmitted on the second carrier of the first cell; and a third type of SS / PBCH block structure is transmitted on the third carrier of the first cell. For example, the first type of SS / PBCH block structure is the SS / PBCH block structure shown in Figure 3(e) above; the second type of SS / PBCH block structure is the SS / PBCH block structure shown in Figure 2 above; and the third type of SS / PBCH block structure is the SS / PBCH block structure shown in Figure 9(a) above. The terminal device performs detection on the three carriers based on the one-to-one correspondence between the carriers and SS / PBCH block structures configured in the network. The terminal device determines the first SS / PBCH block structure corresponding to the first SS / PBCH block based on the carrier containing the first SS / PBCH block structure.

[0361] 2.2 The frequency domain resource set is the BWP where the first SS / PBCH block structure is located.

[0362] In some embodiments, the first information includes the BWP where the first SS / PBCH block structure is located. That is, the set of frequency domain resources associated with the first SS / PBCH block structure is the BWP where the first SS / PBCH block structure is located.

[0363] In some embodiments, a carrier is associated with multiple BWPs, and the network device is configured to transmit the corresponding SS / PBCH block structure on each BWP. Optionally, the SS / PBCH block structure transmitted on different BWPs may be different.

[0364] Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the BWP where the structure of the first SS / PBCH block is located. Alternatively, the terminal device determines the structure of the first SS / PBCH block corresponding to the first SS / PBCH block based on the BWP where the structure of the first SS / PBCH block is located.

[0365] In some embodiments, a third correspondence exists between the BWP containing the first SS / PBCH block structure and the first SS / PBCH block structure itself. Optionally, the third correspondence is one-to-one, meaning that the first SS / PBCH block structures transmitted on different BWPs are different; alternatively, the third correspondence is many-to-one, meaning that the first SS / PBCH block structure can be transmitted on one or more BWPs, and different SS / PBCH block structures are transmitted on different BWPs. The third correspondence is determined based on protocol predefinition or based on network device configuration information.

[0366] For example, referring to Figure 14, a first carrier is associated with at least one BWP. For instance, the first carrier is associated with a first BWP and a second BWP, and the network device transmits the corresponding SS / PBCH block structure on each BWP. A first type of SS / PBCH block structure is transmitted on the first BWP associated with the first carrier, and a second type of SS / PBCH block structure is transmitted on the second BWP associated with the first carrier. For example, the first type of SS / PBCH block structure transmitted on the first BWP is the SS / PBCH block structure shown in Figure 3(e) above, and the second type of SS / PBCH block structure transmitted on the second BWP is the SS / PBCH block structure shown in Figure 2 above. The terminal device, based on the one-to-one correspondence between BWPs and SS / PBCH block structures configured in the network, performs detection on the two BWPs according to their respective SS / PBCH block structures. The terminal device determines the first SS / PBCH block structure corresponding to the first SS / PBCH block based on the BWP where the first SS / PBCH block structure is located.

[0367] 3. The first information includes the first configuration information.

[0368] In some embodiments, the system supports multiple SS / PBCH block structures, and the network device configures the transmission resources or transmission opportunities for each SS / PBCH block structure. Optionally, different SS / PBCH block structures may correspond to different transmission resources; or, different SS / PBCH block structures may correspond to different transmission opportunities.

[0369] In some embodiments, the first information includes first configuration information. Optionally, the terminal device receives a first SS / PBCH block, and the first SS / PBCH block structure corresponding to the first SS / PBCH block is indicated by the first configuration information. It can also be understood that the terminal device determines the first SS / PBCH block structure corresponding to the first SS / PBCH block based on the first configuration information. The first configuration information is used to configure the transmission resources or transmission opportunities corresponding to the first SS / PBCH block structure.

[0370] 3.1 The first configuration information is used to configure the transmission opportunities corresponding to the first SS / PBCH block structure.

[0371] In some embodiments, different SS / PBCH block structures correspond to different transmission opportunities. The terminal device can determine the corresponding SS / PBCH block structure based on the transmission opportunity where the PSS sequence in the detected SS / PBCH is located.

[0372] In some embodiments, the system supports at least two SS / PBCH block structures, which may also be referred to as at least two candidate SS / PBCH block structures. The first SS / PBCH block structure is one of the at least two candidate SS / PBCH block structures. Optionally, each candidate SS / PBCH block structure corresponds to a different transmission opportunity, and the period of the transmission opportunity corresponding to the candidate PSS sequence of each candidate SS / PBCH block structure is different.

[0373] In some embodiments, the first configuration information is used to configure the transmission opportunity corresponding to the first SS / PBCH block structure. The terminal device determines the first SS / PBCH block structure from at least two candidate SS / PBCH block structures based on the transmission opportunity where the first PSS sequence in the detected first SS / PBCH block is located.

[0374] The period of the transmission opportunity where the first PSS sequence is located is the first period. The difference between the first transmission opportunity and the Kth transmission opportunity is an integer multiple of the first period, where K is a positive integer greater than 1. For example, if the period of the transmission opportunity where the first PSS sequence is located is P, the first transmission opportunity is located at t, the second transmission opportunity is located at t+P, the third transmission opportunity is located at t+2*P1, and so on, and the Kth transmission opportunity is located at t+(K-1)*P.

[0375] For example, referring to Figure 15, the system supports two SS / PBCH block structures. The network device configures a first set of synchronization resources with a period of P1. This first set of synchronization resources is used to transmit the first type of SS / PBCH block structure. For example, the first type of SS / PBCH block structure is the SS / PBCH block structure shown in Figure 9(a). In the first set of synchronization resources, if an SS / PBCH transmission opportunity is located at time t1, then subsequent SS / PBCH transmission opportunities will be located at t1+P1, t1+2*P1, etc. The network device configures a second set of synchronization resources with a period of P2. This second set of synchronization resources is used to transmit the second type of SS / PBCH block structure. For example, the second type of SS / PBCH block structure is the SS / PBCH block structure shown in Figure 2. In the second set of synchronization resources, if an SS / PBCH transmission opportunity is located at time t2, then subsequent SS / PBCH transmission opportunities will be located at t2+P2, t1+2*P2, etc. The terminal device performs SS / PBCH detection based on the first SS / PBCH block structure at time t1, and performs SS / PBCH detection based on the second SS / PBCH block structure at time t2. The first SS / PBCH block structure is determined from the first SS / PBCH block structure and the second SS / PBCH block structure (at least two candidate SS / PBCH block structures).

[0376] 3.2 The first configuration information is used to configure the transmission resources corresponding to the first SS / PBCH block structure.

[0377] In some embodiments, different SS / PBCH block structures correspond to different transmission resources. The terminal device can determine the corresponding SS / PBCH block structure based on the transmission resources where the PSS sequence in the detected SS / PBCH is located.

[0378] In some embodiments, the system supports at least two SS / PBCH block structures, which may also be referred to as at least two candidate SS / PBCH block structures. The first SS / PBCH block structure is one of the at least two candidate SS / PBCH block structures. Optionally, each candidate SS / PBCH block structure corresponds to different transmission resources, and the candidate PSS sequences corresponding to each candidate SS / PBCH block structure reside in different transmission resources.

[0379] In some embodiments, different SS / PBCH block structures are associated with / correspond to different transport resources. For example, a first SS / PBCH block structure (i.e., a first candidate SS / PBCH block structure) is on a first set of transport resources, and a second SS / PBCH block structure (i.e., a first candidate SS / PBCH block structure) is on a second set of transport resources.

[0380] In some embodiments, different SS / PBCH block structures are associated with / correspond to different transmission positions on the same set of transmission resources. For example, a first SS / PBCH block structure (i.e., a first candidate SS / PBCH block structure) is located at a first resource position on a first set of transmission resources, and a second SS / PBCH block structure (i.e., a first candidate SS / PBCH block structure) is located at a second resource position on the first set of transmission resources. The resource position includes time-domain resource positions and / or frequency-domain resource positions. This application does not limit this.

[0381] In some embodiments, the first configuration information is used to configure the transmission resources corresponding to the first SS / PBCH block structure. The terminal device determines the corresponding first SS / PBCH block structure based on the transmission resources where the first PSS sequence in the detected first SS / PBCH block is located.

[0382] 4. The first information includes the time interval between the time domain symbols containing the first PSS and the first SSS.

[0383] In some embodiments, the time interval between the time domain symbols containing the PSS and SSS differs in different SS / PBCH block structures. The terminal device can determine the corresponding SS / PBCH block structure by detecting the time interval between the time domain symbols containing the PSS and SSS.

[0384] In some embodiments, the system supports at least two SS / PBCH block structures, which may also be referred to as at least two candidate SS / PBCH block structures. The time interval between the time-domain symbols containing the PSS and SSS differs in each candidate SS / PBCH block structure.

[0385] In some embodiments, the first information includes the time interval between the time domain symbols where the first PSS and the first SSS are located. Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the time interval between the time domain symbols where the first PSS and the first SSS are located. Alternatively, the terminal device can be understood to determine the structure of the first SS / PBCH block corresponding to the first SS / PBCH block based on the time interval between the time domain symbols where the first PSS and the first SSS are located.

[0386] In some embodiments, the time interval between the time domain symbols containing the first PSS and the first SSS has a fourth correspondence with the first SS / PBCH block structure, and this fourth correspondence is a one-to-one relationship. This fourth correspondence is determined based on protocol predefinition or based on the network device's configuration information.

[0387] For example, the system is configured with two SS / PBCH block structures. The first SS / PBCH block structure is shown in Figure 9(a), and the second SS / PBCH block structure is shown in Figure 2. In the first SS / PBCH block structure, X = 12, L = 127, C = 8, and D = 9. Therefore, the PSS sequence length is the same for both SS / PBCH block structures, but the OFDM symbol positions of the SSS are different.

[0388] In the first SS / PBCH block structure, the OFDM symbol where PSS is located is located in the first OFDM symbol of the SS / PBCH block, and the OFDM symbol where SSS is located is located in the second OFDM symbol of the SS / PBCH block. That is, the time interval between the OFDM symbol where PSS is located and the OFDM symbol where SSS is located is 1 OFDM symbol.

[0389] In the second SS / PBCH block structure, the OFDM symbol containing the PSS is located in the first OFDM symbol of the SS / PBCH block, and the OFDM symbol containing the SSS is located in the third OFDM symbol of the SS / PBCH block. That is, the time interval between the OFDM symbol containing the PSS and the OFDM symbol containing the SSS is 2 OFDM symbols.

[0390] If the terminal device detects a PSS (Programmatic Sequence Segment), it detects SSS (Sequence Segment Segment) on the first and second OFDM symbols following the PSS, based on the OFDM symbol position of the PSS. The corresponding SS / PBCH block structure can be determined based on the detection results of the SSS sequences on these two OFDM symbols. If an SSS sequence is detected on the first OFDM symbol following the PSS, it corresponds to the first type of SS / PBCH block structure; if an SSS sequence is detected on the second OFDM symbol following the PSS, it corresponds to the second type of SS / PBCH block structure.

[0391] 5. The first information includes the relative positions between the first PSS and the first SSS.

[0392] In some embodiments, the relative positions between the PSS and SSS differ in different SS / PBCH block structures. The terminal device can distinguish the SS / PBCH block structure by detecting the relative positions between the PSS and SSS.

[0393] In some embodiments, the system supports at least two SS / PBCH block structures, which may also be referred to as at least two candidate SS / PBCH block structures. The relative positions of the PSS and SSS differ in each candidate SS / PBCH block structure.

[0394] Optionally, the relative positions between PSS and SSS include their time-domain relative positions and / or their frequency-domain relative positions. For example, the time-domain relative positions between PSS and SSS may differ. Similarly, the frequency-domain relative positions between PSS and SSS may differ. This application does not limit this.

[0395] In some embodiments, the first information includes the relative position between the first PSS and the first SSS. Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the relative position between the first PSS and the first SSS. It can also be understood that the terminal device determines the structure of the first SS / PBCH block corresponding to the first SS / PBCH block based on the relative position between the first PSS and the first SSS.

[0396] In some embodiments, the relative position between the first PSS and the first SSS can be a temporal relative position. Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the temporal relative position between the first PSS and the first SSS. It can also be understood that the terminal device determines the structure of the first SS / PBCH block corresponding to the first SS / PBCH block based on the temporal relative position between the first PSS and the first SSS.

[0397] In some embodiments, the relative position between the first PSS and the first SSS can also be a frequency-domain relative position. Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the frequency-domain relative position between the first PSS and the first SSS. It can also be understood that the terminal device determines the structure of the first SS / PBCH block corresponding to the first SS / PBCH block based on the frequency-domain relative position between the first PSS and the first SSS.

[0398] In some embodiments, the relative positions between the first PSS and the first SSS can also be relative positions in the time domain and frequency domain. Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is jointly indicated by the relative positions in the time domain and frequency domain between the first PSS and the first SSS. It can also be understood that the terminal device determines the structure of the first SS / PBCH block corresponding to the first SS / PBCH block based on the relative positions in the time domain and frequency domain between the first PSS and the first SSS.

[0399] In some embodiments, the relative time-domain positions of the first PSS and the first SSS are different, which can also be understood as the time-domain symbols of the first PSS and the first SSS being different. The relative time-domain positions of the first PSS and the first SSS are determined based on the time interval between the time-domain symbols of the first PSS and the first SSS.

[0400] Regarding the relative position between the first PSS and the first SSS being a time-domain relative position, please refer to the relevant introduction in the above-mentioned section "4. The first information includes the time interval between the time-domain symbols where the first PSS and the first SSS are located," which will not be repeated here.

[0401] It should be noted that in the current SS / PBCH block structure, the design of PSS and SSS is reflected in their different time-domain symbols within the SS / PBCH block; that is, the relative time-domain positions of PSS and SSS are different. In one implementation, the design of PSS and SSS can also be reflected in their different frequency-domain positions within the SS / PBCH block (e.g., PSS occupies X1 PRBs, SSS occupies X2 PRBs), meaning the relative frequency-domain positions of PSS and SSS are also different. This application does not limit this approach.

[0402] 6. The first information includes the number of time-domain symbols occupied by the first PSS.

[0403] In some embodiments, the number of time-domain symbols occupied by the PSS differs in different SS / PBCH block structures. The terminal device can distinguish the SS / PBCH block structure by detecting the number of time-domain symbols (OFDM symbols) occupied by the PSS.

[0404] In some embodiments, the system supports at least two SS / PBCH block structures, which may also be referred to as at least two candidate SS / PBCH block structures. The number of time-domain symbols occupied by the PSS differs in each candidate SS / PBCH block structure.

[0405] In some embodiments, the first information includes the number of time-domain symbols occupied by the first PSS. Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the number of time-domain symbols occupied by the first PSS. Alternatively, the terminal device determines the structure of the first SS / PBCH block corresponding to the first SS / PBCH block based on the number of time-domain symbols occupied by the first PSS.

[0406] In some embodiments, the number of time-domain symbols occupied by the first PSS has a fifth correspondence with the first SS / PBCH block structure, and this fifth correspondence is a one-to-one relationship. This fifth correspondence is determined based on protocol predefinition or based on network device configuration information.

[0407] In some embodiments, the first PSS occupies P OFDM symbols in the time domain, where P is a positive integer greater than or equal to 1.

[0408] For example, the system is configured with two SS / PBCH block structures. The first SS / PBCH block structure is shown in Figure 10(a), and the second SS / PBCH block structure is shown in Figure 2. In the first SS / PBCH block structure, X = 12, L = 127, C = 8, and D = 9. Therefore, the PSS sequence length is the same in both SS / PBCH block structures, but the number of OFDM symbols occupied by the PSS is different. In the first SS / PBCH block structure, the PSS occupies 2 OFDM symbols of the SS / PBCH block; in the second SS / PBCH block structure, the PSS occupies 1 OFDM symbol of the SS / PBCH block.

[0409] If the terminal device detects a PSS on OFDM symbol m, it then determines whether a PSS is also detected on OFDM symbol m+1. If a PSS is detected on OFDM symbol m+1, it is determined to be the first type of SS / PBCH block structure. If no PSS is detected on symbol m+1, it is determined to be the second type of SS / PBCH block structure.

[0410] In this embodiment, if the system supports multiple SS / PBCH block structures (or multiple candidate SS / PBCH block structures), the SS / PBCH block structure is distinguished by information such as the first PSS sequence, the frequency domain resource set (carrier or BWP) associated with the first SS / PBCH block structure, the first configuration information, the time interval between the time domain symbols of the first PSS and the first SSS, and the number of time domain symbols of the first PSS. Compared with the method in related technologies where the terminal device detects multiple candidate SS / PBCH block structures separately, this method of determining the SS / PBCH block structure can reduce the power consumption of the terminal device and reduce the detection latency.

[0411] Figure 16 shows a structural block diagram of an SS / PBCH block receiving device provided in an exemplary embodiment of this application. This SS / PBCH block receiving device can be implemented as a terminal device, or as part of a terminal device, through software, hardware, or a combination of both. The information determining device includes a receiving module 1610.

[0412] The receiving module 1610 is used to receive a first synchronization signal SS / PBCH block, wherein the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by first information.

[0413] In some embodiments, the network device generates different synchronization signals for different synchronization signal block structures. These synchronization signal block structures can be simply referred to as SS / PBCH block structures or SSB structures. The following description primarily uses the SS / PBCH block structure as the synchronization signal block structure.

[0414] The SS / PBCH block structure includes a synchronization signal and a PBCH, with the synchronization signal used at least for downlink synchronization. Optionally, the synchronization signal includes a PSS and / or an SSS. The PBCH is used to carry the MIB. The SS / PBCH block structure also includes resources for mapping reference signals (such as PBCH DMRS), which are used by the terminal equipment to detect the PBCH. The DMRS and PBCH can be mapped to the same PRB, i.e., the PRB includes both PBCH and DMRS; or, the DMRS and PBCH can be mapped to different PRBs or different OFDM symbols, i.e., PBCH and DMRS are frequency-division multiplexed or time-division multiplexed.

[0415] In some embodiments, the receiving module 1610 is configured to receive a first SS / PBCH block, the structure of which is indicated by first information. Alternatively, the receiving module 1610 can be understood as determining the structure of the first SS / PBCH block corresponding to the first information based on the first information.

[0416] In some embodiments, the system supports at least two SS / PBCH block structures, which may also be referred to as at least two candidate SS / PBCH block structures. The first SS / PBCH block structure is one of the at least two candidate SS / PBCH block structures.

[0417] The aforementioned first SS / PBCH block includes one or more of the following: first PSS, first SSS, and first PBCH.

[0418] In some embodiments, the first information includes one or more of the following:

[0419] • First PSS sequence;

[0420] • The set of frequency domain resources associated with the first SS / PBCH block structure;

[0421] • First configuration information;

[0422] • The time interval between the time domain symbols containing the first PSS and the first SSS;

[0423] • The relative positions between the first PSS and the first SSS;

[0424] • The number of time-domain symbols occupied by the first PSS.

[0425] In some embodiments, the first information includes a first PSS sequence. Optionally, the receiving module 1610 is configured to receive a first SS / PBCH block, the structure of which is indicated by the first PSS sequence. Alternatively, the receiving module 1610 can be understood as receiving the first PSS sequence and determining the structure of the first SS / PBCH block corresponding to it.

[0426] In some embodiments, the first information includes a set of frequency domain resources associated with the first SS / PBCH block structure. For example, the set of frequency domain resources associated with the first SS / PBCH block structure is the carrier in which the first SS / PBCH block structure is located. Optionally, the receiving module 1610 is configured to receive the first SS / PBCH block, wherein the first SS / PBCH block structure corresponding to the first SS / PBCH block is indicated by the set of frequency domain resources associated with the first SS / PBCH block structure.

[0427] In some embodiments, the first information includes first configuration information. The first configuration information is used to configure the transmission resources or transmission opportunities corresponding to the first SS / PBCH block structure. Optionally, the receiving module 1610 is used to receive the first SS / PBCH block, and the first SS / PBCH block structure corresponding to the first SS / PBCH block is indicated by the first configuration information.

[0428] In some embodiments, the first information includes the time interval between the time domain symbols where the first PSS and the first SSS are located. Optionally, the receiving module 1610 is configured to receive a first SS / PBCH block, the structure of which is indicated by the time interval between the time domain symbols where the first PSS and the first SSS are located.

[0429] In some embodiments, the first information includes the relative position between the first PSS and the first SSS. For example, the relative position between the first PSS and the first SSS may be a time-domain relative position. Alternatively, the relative position between the first PSS and the first SSS may also be a frequency-domain relative position. Optionally, the receiving module 1610 is configured to receive a first SS / PBCH block, the structure of which is indicated by the relative position between the first PSS and the first SSS.

[0430] In some embodiments, the first information includes the number of time-domain symbols occupied by the first PSS. Optionally, the receiving module 1610 is configured to receive a first SS / PBCH block, the structure of which is indicated by the number of time-domain symbols occupied by the first PSS. Alternatively, the receiving module 1610 can be understood as determining the structure of the first SS / PBCH block based on the number of time-domain symbols occupied by the first PSS.

[0431] It should be noted that the first information may also include at least two types of information. For example, the first information may include the set of frequency domain resources associated with the first PSS sequence and the first SS / PBCH block structure. Another example is that the first information may include the time interval between the time domain symbols containing the first PSS and the first SSS, and the number of time domain symbols occupied by the first PSS, etc. This application does not limit this.

[0432] In some embodiments, the apparatus further includes a processing module.

[0433] In some embodiments, the processing module is used to determine the first SS / PBCH block structure corresponding to the first PSS sequence based on the first PSS sequence.

[0434] In some embodiments, the processing module is used to determine the first SS / PBCH block structure corresponding to the first SS / PBCH block based on the frequency domain resource set associated with the first SS / PBCH block structure.

[0435] In some embodiments, the processing module is used to determine the first SS / PBCH block structure corresponding to the first SS / PBCH block based on the first configuration information.

[0436] In some embodiments, the processing module is used to determine the first SS / PBCH block structure corresponding to the first SS / PBCH block based on the time interval between the time domain symbols where the first PSS and the first SSS are located.

[0437] In some embodiments, the processing module is used to determine the first SS / PBCH block structure corresponding to the first SS / PBCH block based on the relative position between the first PSS and the first SSS.

[0438] In some embodiments, the processing module is used to determine the structure of the first SS / PBCH block corresponding to the first SS / PBCH block based on the number of time-domain symbols occupied by the first PSS.

[0439] For details regarding the first information and the first SS / PBCH block structure, please refer to the above-mentioned section "Next, based on the embodiments shown in Figures 11 and 12, the first information and the determination of the first SS / PBCH block structure based on the first information"; these details will not be repeated here.

[0440] In summary, the apparatus provided in this application receives a first SS / PBCH block. The structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by first information. Different first SS / PBCH block structures correspond to different first information. The apparatus determines the first SS / PBCH block structure corresponding to the first SS / PBCH block from a variety of candidate SS / PBCH block structures supported by the system by performing detection on the first information. Compared with the method in related technologies that detects multiple candidate SS / PBCH block structures separately, this method of determining the SS / PBCH block structure can reduce the power consumption of the apparatus and reduce the detection latency.

[0441] Figure 17 shows a structural block diagram of an SS / PBCH block transmission apparatus provided in an exemplary embodiment of this application. This SS / PBCH block transmission apparatus can be implemented as a network device, or as part of a network device, through software, hardware, or a combination of both. The information determination apparatus includes a transmission module 1710.

[0442] The transmitting module 1710 is used to transmit a first SS / PBCH block, the structure of which is indicated by first information.

[0443] In some embodiments, the transmitting module 1710 is used to generate different synchronization signals for different synchronization signal block structures. The synchronization signal block structure can be simply referred to as the SS / PBCH block structure or the SSB structure. The following description primarily uses the SS / PBCH block structure as the synchronization signal block structure.

[0444] The SS / PBCH block structure includes a synchronization signal and a PBCH, with the synchronization signal used at least for downlink synchronization. Optionally, the synchronization signal includes a PSS and / or an SSS. The PBCH is used to carry the MIB. The SS / PBCH block structure also includes resources for mapping reference signals (such as PBCH DMRS), which are used by the terminal equipment to detect the PBCH. The DMRS and PBCH can be mapped to the same PRB, i.e., the PRB includes both PBCH and DMRS; or, the DMRS and PBCH can be mapped to different PRBs or different OFDM symbols, i.e., PBCH and DMRS are frequency-division multiplexed or time-division multiplexed.

[0445] In some embodiments, the sending module 1710 is used to send a first SS / PBCH block to the terminal device, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by first information. Alternatively, the terminal device can be understood to determine the structure of the first SS / PBCH block corresponding to the first information based on the first information sent by the sending module 1710.

[0446] In some embodiments, the system supports at least two SS / PBCH block structures, which may also be referred to as at least two candidate SS / PBCH block structures. The first SS / PBCH block structure is one of the at least two candidate SS / PBCH block structures.

[0447] The aforementioned first SS / PBCH block includes one or more of the following: first PSS, first SSS, and first PBCH.

[0448] In some embodiments, the first information includes one or more of the following:

[0449] • First PSS sequence;

[0450] • The set of frequency domain resources associated with the first SS / PBCH block structure;

[0451] • First configuration information;

[0452] • The time interval between the time domain symbols containing the first PSS and the first SSS;

[0453] • The relative positions between the first PSS and the first SSS;

[0454] • The number of time-domain symbols occupied by the first PSS.

[0455] In some embodiments, the first information includes a first PSS sequence. Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the first PSS sequence. Alternatively, the terminal device receives the first PSS sequence and determines the structure of the first SS / PBCH block corresponding to the first PSS sequence.

[0456] In some embodiments, the first information includes a set of frequency domain resources associated with the first SS / PBCH block structure. For example, the set of frequency domain resources associated with the first SS / PBCH block structure is the carrier in which the first SS / PBCH block structure is located. Optionally, the terminal device receives the first SS / PBCH block, and the first SS / PBCH block structure corresponding to the first SS / PBCH block is indicated by the set of frequency domain resources associated with the first SS / PBCH block structure. It can also be understood that the terminal device determines the first SS / PBCH block structure corresponding to the first SS / PBCH block based on the set of frequency domain resources associated with the first SS / PBCH block structure.

[0457] In some embodiments, the first information includes first configuration information. The first configuration information is used to configure the transmission resources or transmission opportunities corresponding to the first SS / PBCH block structure. Optionally, the terminal device receives the first SS / PBCH block, and the first SS / PBCH block structure corresponding to the first SS / PBCH block is indicated by the first configuration information. Alternatively, the terminal device determines the first SS / PBCH block structure corresponding to the first SS / PBCH block based on the first configuration information.

[0458] In some embodiments, the first information includes the time interval between the time domain symbols where the first PSS and the first SSS are located. Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the time interval between the time domain symbols where the first PSS and the first SSS are located. Alternatively, the terminal device can be understood to determine the structure of the first SS / PBCH block corresponding to the first SS / PBCH block based on the time interval between the time domain symbols where the first PSS and the first SSS are located.

[0459] In some embodiments, the first information includes the relative position between the first PSS and the first SSS. For example, the relative position between the first PSS and the first SSS can be a time-domain relative position. Alternatively, the relative position between the first PSS and the first SSS can also be a frequency-domain relative position. Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the relative position between the first PSS and the first SSS. It can also be understood that the terminal device determines the structure of the first SS / PBCH block corresponding to the first SS / PBCH block based on the relative position between the first PSS and the first SSS.

[0460] In some embodiments, the first information includes the number of time-domain symbols occupied by the first PSS. Optionally, the terminal device receives a first SS / PBCH block, and the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the number of time-domain symbols occupied by the first PSS. Alternatively, the terminal device determines the structure of the first SS / PBCH block corresponding to the first SS / PBCH block based on the number of time-domain symbols occupied by the first PSS.

[0461] It should be noted that the first information may also include at least two types of information. For example, the first information may include the set of frequency domain resources associated with the first PSS sequence and the first SS / PBCH block structure. Another example is that the first information may include the time interval between the time domain symbols containing the first PSS and the first SSS, and the number of time domain symbols occupied by the first PSS, etc. This application does not limit this.

[0462] For details regarding the first information and the first SS / PBCH block structure, please refer to the above-mentioned section "Next, based on the embodiments shown in Figures 11 and 12, the first information and the determination of the first SS / PBCH block structure based on the first information"; these details will not be repeated here.

[0463] In summary, the apparatus provided in this application sends a first SS / PBCH block to a terminal device. The structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by first information. Different first SS / PBCH block structures correspond to different first information. The terminal device determines the first SS / PBCH block structure corresponding to the first SS / PBCH block from a variety of candidate SS / PBCH block structures supported by the system by performing detection on the first information. Compared with the method in related technologies where the terminal device detects multiple candidate SS / PBCH block structures separately, this method of determining the SS / PBCH block structure can reduce the power consumption of the terminal device and reduce the detection latency.

[0464] Figure 18 shows a schematic diagram of a communication device provided in an exemplary embodiment of this application. The communication device 1800 includes at least one of the following: a receiver 1801, a transmitter 1802, a processor 1803, a memory 1804, and a bus (not shown in the figure).

[0465] In this design, receiver 1801 is used to implement the receiving function, and transmitter 1802 is used to implement the transmitting function. Optionally, receiver 1801 and transmitter 1802 can be implemented as a communication component, which can be a communication chip, and can be referred to as a transceiver. Optionally, receiver 1801 and transmitter 1802 can be implemented as a wireless communication component and / or a wired communication component. Optionally, the wireless communication component includes a wireless communication chip and / or a radio frequency antenna. Optionally, the wired communication component includes a wired communication chip and / or a wired interface.

[0466] The processor 1803 includes one or more processing cores, and the processor 1803 executes various functional applications and information processing by running software programs and modules.

[0467] In some embodiments, the communication device 1800 is implemented as a terminal device, used to perform some or all of the steps performed by the terminal device. The receiver 1801 can be used to implement the functions and steps of the receiving module 1610, and the processor 1803 can be used to implement the functions and steps of the processing module.

[0468] In some embodiments, the communication device 1800 is implemented as a network device for performing some or all of the steps performed by the network device described above. The transmitter 1802 can be used to implement the functions and steps of the transmission module 1710 described above.

[0469] The memory 1804 can be used to store a computer program executed by the processor 1803, which executes the computer program to implement the various steps in the above method embodiments.

[0470] Furthermore, the memory 1804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static random access memory (SRAM), read-only memory (ROM), magnetic storage, flash memory, and programmable read-only memory (PROM).

[0471] In some embodiments, the memory 1804 may be connected to the processor 1803, the receiver 1801, and the transmitter 1802.

[0472] In some embodiments, the receiver 1801 independently receives signals / data, or the processor 1803 controls the receiver 1801 to receive signals / data, or the processor 1803 requests the receiver 1801 to receive signals / data, or the processor 1803 cooperates with the receiver 1801 to receive signals / data.

[0473] In some embodiments, the transmitter 1802 independently transmits signals / data, or the processor 1803 controls the transmitter 1802 to transmit signals / data, or the processor 1803 requests the transmitter 1802 to transmit signals / data, or the processor 1803 cooperates with the transmitter 1802 to transmit signals / data.

[0474] For details not described in this embodiment, please refer to the embodiments above, which will not be repeated here.

[0475] In one exemplary embodiment of this application, a chip is also provided, the chip including programmable logic circuits and / or program instructions, which, when the chip is run on a communication device, is used to implement the SS / PBCH block receiving and transmitting methods provided in the above-described method embodiments.

[0476] In some embodiments, this application provides a chip including programmable logic circuitry and / or program instructions to cause a UE device equipped with the chip to receive a synchronization signal block, the synchronization signal block including one or more of the following: PSS, SSS, PBCH; wherein the OFDM symbol carrying the PBCH is different from the OFDM symbol carrying the DMRS corresponding to the PBCH. Further, the chip can be used to implement the functions and steps of at least one of the above-described receiving module 1610 and processing module.

[0477] In some embodiments, this application provides a chip including programmable logic circuitry and / or program instructions to cause a network device equipped with the chip to transmit a synchronization signal block, the synchronization signal block including one or more of the following: PSS, SSS, PBCH; wherein the OFDM symbol carrying the PBCH is different from the OFDM symbol carrying the DMRS corresponding to the PBCH. Further, the chip can be used to implement the functions and steps of the above-described transmission module 1710.

[0478] In one exemplary embodiment of this application, a computer-readable storage medium is also provided, which stores at least one program that is loaded and executed by a processor to implement the SS / PBCH block receiving and transmitting method provided in the above-described method embodiments.

[0479] In some embodiments, this application provides a computer-readable storage medium storing a computer program that is loaded and executed by a terminal device to enable the terminal device to implement a first synchronization signal SS / PBCH block, wherein the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by first information. Further, the computer-readable storage medium can be used to implement the functions and steps of at least one of the receiving module 1610 and the processing module described above.

[0480] In some embodiments, this application provides a computer-readable storage medium storing a computer program loaded and executed by a network device to enable the network device to transmit a first synchronization signal SS / PBCH block, wherein the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by first information. Further, the computer-readable storage medium can be used to implement the functions and steps of the aforementioned transmitting module 1710.

[0481] In one exemplary embodiment of this application, a computer program product is also provided, which includes computer instructions stored in a computer-readable storage medium. A processor retrieves the computer instructions from the computer-readable storage medium and executes the computer instructions to implement the SS / PBCH block receiving and transmitting methods provided in the above-described method embodiments.

[0482] In some embodiments, this application provides a computer program product comprising computer instructions stored in a computer-readable storage medium. A processor of a terminal device retrieves the computer instructions from the computer-readable storage medium and executes the computer instructions to receive a first synchronization signal SS / PBCH block. The structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by first information. Further, the computer program product can be used to implement the functions and steps of at least one of the receiving module 1610 and the processing module described above.

[0483] In some embodiments, this application provides a computer program product including computer instructions stored in a computer-readable storage medium. A processor of a network device retrieves the computer instructions from the computer-readable storage medium and executes the computer instructions to transmit a first synchronization signal SS / PBCH block. The structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by first information. Further, the computer program product can be used to implement the functions and steps of the aforementioned transmitting module 1710.

[0484] In one exemplary embodiment of this application, a computer program is also provided, the computer program including computer instructions stored in a computer-readable storage medium, a processor obtaining the computer instructions from the computer-readable storage medium, and the processor executing the computer instructions to implement the SS / PBCH block receiving and transmitting methods provided in the above-described method embodiments.

[0485] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware, or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk. The above are merely optional embodiments of this application and are not intended to limit the application. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A method for receiving a synchronization signal SS / PBCH block, characterized in that, The method is executed by a terminal device, and the method includes: Receive the first SS / PBCH block, the structure of the first SS / PBCH block corresponding to the first SS / PBCH block is indicated by the first information.

2. The method according to claim 1, characterized in that, The first information includes at least one of the following: The first primary synchronization signal PSS sequence; the set of frequency domain resources associated with the first SS / PBCH block structure; the first configuration information; the time interval between the time domain symbols where the first PSS and the first secondary synchronization signal SSS are located; the relative position between the first PSS and the first SSS; and the number of time domain symbols occupied by the first PSS.

3. The method according to claim 2, characterized in that, The first information includes the first PSS sequence; The first PSS sequence and the first SS / PBCH block structure have a first correspondence relationship, which is a one-to-one relationship. The first PSS sequence is generated based on the influence factor, which is related to the index corresponding to the first SS / PBCH block structure.

4. The method according to claim 3, characterized in that, The influencing factors include at least one of the following: First numerical value; first coefficient; exponential function.

5. The method according to claim 4, characterized in that, The impact factor includes the first value, the first PSS sequence is generated based on the second sequence, and the sample point index of the second sequence is generated based on the first value.

6. The method according to claim 5, characterized in that, The sample index of the second sequence is determined based on the sum of the following three factors: The sample index of the first PSS sequence, the product of the first coefficient and the first identifier, and the first value; The first coefficient is determined based on predefined protocol information or based on the sequence length of the first PSS sequence, and the first identifier is determined based on the physical cell identifier.

7. The method according to claim 5, characterized in that, The sample index of the second sequence is determined based on the sum of the following three factors: The sample index of the first PSS sequence, the product of the first coefficient and the first identifier, and the first value; The first coefficient is determined based on protocol predefined information or based on the sequence length of the first PSS sequence; the first value is determined based on the product of the index of the first SS / PBCH block structure and the first preset value; and the first identifier is determined based on the physical cell identifier.

8. The method according to claim 7, characterized in that, The index of the first SS / PBCH block structure has a value range of 0 to N-1; Wherein, N is determined based on the number of candidate SS / PBCH block structure types; or, N is related to the number of candidate SS / PBCH block structure types.

9. The method according to claim 6 or 7, characterized in that, The first coefficient is a prime number or integer greater than the first quotient; or, the first coefficient is a prime number or integer closest to the first quotient. The first quotient is a value obtained by using the length of the first PSS sequence as the dividend and the first constant as the divisor.

10. The method according to claim 5, characterized in that, The sample index of the second sequence is determined based on the sum of the following two values: The sample index of the first PSS sequence, and the product of the first value and the first identifier; The first value is determined based on the product of the index of the first SS / PBCH block structure and the second preset value, and the first identifier is determined based on the physical cell identifier.

11. The method according to claim 10, characterized in that, The index of the first SS / PBCH block structure has a value range of 1 to N; or, the index of the first SS / PBCH block structure has a value range of 0 to N-1. Wherein, N is determined based on the number of types of the candidate SS / PBCH block structures; or, N is related to the number of types of the candidate SS / PBCH block structures.

12. The method according to claim 11, characterized in that, The second preset value is a prime number or integer greater than the second quotient; or, the second preset value is a prime number or integer closest to the second quotient. The second quotient is a value obtained by using the length of the first PSS sequence as the dividend and the product of the first constant and N as the divisor.

13. The method according to claim 4, characterized in that, The influence factor includes the exponential function, and the exponential factor of the exponential function is related to the index corresponding to the first SS / PBCH block structure.

14. The method according to claim 13, characterized in that, The exponential function is e j2πin / N j is an imaginary number, i is determined based on the index corresponding to the first SS / PBCH block structure, n is the sample index of the first PSS sequence, and N is determined based on the number of types of the candidate SS / PBCH block structure, or N is related to the number of types of the candidate SS / PBCH block structure.

15. The method according to claim 13, characterized in that, The exponential function is e j2πim / N j is an imaginary number, i is determined based on the index corresponding to the first SS / PBCH block structure, m is the sample index of the second sequence, and N is determined based on the number of types of the candidate SS / PBCH block structure, or N is related to the number of types of the candidate SS / PBCH block structure.

16. The method according to any one of claims 13 to 15, characterized in that, The first PSS sequence is generated by the product of the third sequence and the exponential function; The third sequence is determined based on the difference between the following two: a constant 1 and the product of the second coefficient and the second sequence; the second coefficient is determined based on protocol predefined information.

17. The method according to any one of claims 13 to 15, characterized in that, The first PSS sequence is determined based on the difference between the following two: a constant 1, and the product of the exponential function and the second sequence.

18. The method according to claim 16 or 17, characterized in that, The sample index of the second sequence is determined based on the sum of the following two values: The sample index of the first PSS sequence, and the product of the first coefficient and the first identifier; The first coefficient is determined based on predefined protocol information or based on the sequence length of the first PSS sequence, and the first identifier is determined based on the physical cell identifier.

19. The method according to claim 2, characterized in that, The first information includes the set of frequency domain resources associated with the first SS / PBCH block structure; The frequency domain resource set associated with the first SS / PBCH block structure is: the carrier where the first SS / PBCH block structure is located; or, the bandwidth portion (BWP) where the first SS / PBCH block structure is located.

20. The method according to claim 19, characterized in that, The set of frequency domain resources associated with the first SS / PBCH block structure is the carrier in which the first SS / PBCH block structure is located; The carrier containing the first SS / PBCH block structure has a second correspondence with the first SS / PBCH block structure, and the second correspondence is a one-to-one relationship.

21. The method according to claim 19, characterized in that, The set of frequency domain resources associated with the first SS / PBCH block structure is the BWP where the first SS / PBCH block structure is located; Among them, there is a third correspondence between the BWP where the first SS / PBCH block structure is located and the first SS / PBCH block structure, and the third correspondence is a one-to-one relationship.

22. The method according to claim 2, characterized in that, The first information includes the first configuration information; The first configuration information is used to configure the transmission resources or transmission opportunities corresponding to the first SS / PBCH block structure.

23. The method according to claim 22, characterized in that, The first configuration information is used to configure the transmission opportunities corresponding to the first SS / PBCH block structure; The period of the transmission opportunity is the first period, and the difference between the first transmission opportunity and the Kth transmission opportunity is an integer multiple of the first period, where K is a positive integer greater than 1.

24. The method according to claim 2, characterized in that, The first information includes the time interval between the time domain symbols where the first PSS and the first SSS are located; The time interval between the time domain symbols where the first PSS and the first SSS are located has a fourth correspondence with the first SS / PBCH block structure, and the fourth correspondence is a one-to-one relationship.

25. The method according to claim 2, characterized in that, The first information includes the relative positions between the first PSS and the first SSS; The relative position includes at least one of time-domain relative position and frequency-domain relative position.

26. The method according to claim 2, characterized in that, The first information includes the number of symbols occupied by the first PSS; The number of symbols occupied by the first PSS has a fifth correspondence with the first SS / PBCH block structure, and the fifth correspondence is a one-to-one relationship.

27. The method according to claim 26, characterized in that, The first PSS occupies P OFDM symbols in the time domain, where P is a positive integer greater than or equal to 1.

28. A method for transmitting a synchronization signal SS / PBCH block, characterized in that, The method is performed by a network device, and the method includes: Send a first synchronization signal SS / PBCH block, the structure of which is indicated by the first information.

29. The method according to claim 28, characterized in that, The first information includes at least one of the following: The first PSS sequence; the set of frequency domain resources associated with the first SS / PBCH block structure; the first configuration information; the time interval between the time domain symbols where the first PSS and the first SSS are located; the relative position between the first PSS and the first SSS; and the number of time domain symbols occupied by the first PSS.

30. The method according to claim 29, characterized in that, The first information includes the first PSS sequence; The first PSS sequence and the first SS / PBCH block structure have a first correspondence relationship, which is a one-to-one relationship. The first PSS sequence is generated based on the influence factor, which is related to the index corresponding to the first SS / PBCH block structure.

31. The method according to claim 30, characterized in that, The influencing factors include at least one of the following: First numerical value; first coefficient; exponential function.

32. The method according to claim 31, characterized in that, The impact factor includes the first value, the first PSS sequence is generated based on the second sequence, and the sample point index of the second sequence is generated based on the first value.

33. The method according to claim 32, characterized in that, The sample index of the second sequence is determined based on the sum of the following three factors: The sample index of the first PSS sequence, the product of the first coefficient and the first identifier, and the first value; The first coefficient is determined based on predefined protocol information or based on the sequence length of the first PSS sequence, and the first identifier is determined based on the physical cell identifier.

34. The method according to claim 32, characterized in that, The sample index of the second sequence is determined based on the sum of the following three factors: The sample index of the first PSS sequence, the product of the first coefficient and the first identifier, and the first value; The first coefficient is determined based on protocol predefined information or based on the sequence length of the first PSS sequence; the first value is determined based on the product of the index of the first SS / PBCH block structure and the first preset value; and the first identifier is determined based on the physical cell identifier.

35. The method according to claim 34, characterized in that, The index of the first SS / PBCH block structure has a value range of 0 to N-1; Wherein, N is determined based on the number of candidate SS / PBCH block structure types; or, N is related to the number of candidate SS / PBCH block structure types.

36. The method according to claim 33 or 34, characterized in that, The first coefficient is a prime number or integer greater than the first quotient; or, the first coefficient is a prime number or integer closest to the first quotient. The first quotient is a value obtained by using the length of the first PSS sequence as the dividend and the first constant as the divisor.

37. The method according to claim 32, characterized in that, The sample index of the second sequence is determined based on the sum of the following two values: The sample index of the first PSS sequence, and the product of the first value and the first identifier; The first value is determined based on the product of the index of the first SS / PBCH block structure and the second preset value, and the first identifier is determined based on the physical cell identifier.

38. The method according to claim 37, characterized in that, The index of the first SS / PBCH block structure has a value range of 1 to N; or, the index of the first SS / PBCH block structure has a value range of 0 to N-1. Wherein, N is determined based on the number of types of the candidate SS / PBCH block structures; or, N is related to the number of types of the candidate SS / PBCH block structures.

39. The method according to claim 38, characterized in that, The second preset value is a prime number or integer greater than the second quotient; or, the second preset value is a prime number or integer closest to the second quotient. The second quotient is a value obtained by using the length of the first PSS sequence as the dividend and the product of the first constant and N as the divisor.

40. The method according to claim 31, characterized in that, The influence factor includes the exponential function, and the exponential factor of the exponential function is related to the index corresponding to the first SS / PBCH block structure.

41. The method according to claim 40, characterized in that, The exponential function is e j2πin / N j is an imaginary number, i is determined based on the index corresponding to the first SS / PBCH block structure, n is the sample index of the first PSS sequence, and N is determined based on the number of types of the candidate SS / PBCH block structure, or N is related to the number of types of the candidate SS / PBCH block structure.

42. The method according to claim 40, characterized in that, The exponential function is e j2πim / N j is an imaginary number, i is determined based on the index corresponding to the first SS / PBCH block structure, m is the sample index of the second sequence, and N is determined based on the number of types of the candidate SS / PBCH block structure, or N is related to the number of types of the candidate SS / PBCH block structure.

43. The method according to any one of claims 40 to 42, characterized in that, The first PSS sequence is generated by the product of the third sequence and the exponential function; The third sequence is determined based on the difference between the following two: a constant 1 and the product of the second coefficient and the second sequence; the second coefficient is determined based on protocol predefined information.

44. The method according to any one of claims 40 to 42, characterized in that, The first PSS sequence is determined based on the difference between the following two: a constant 1, and the product of the exponential function and the second sequence.

45. The method according to claim 43 or 44, characterized in that, The sample index of the second sequence is determined based on the sum of the following two values: The sample index of the first PSS sequence, and the product of the first coefficient and the first identifier; The first coefficient is determined based on predefined protocol information or based on the sequence length of the first PSS sequence, and the first identifier is determined based on the physical cell identifier.

46. ​​The method according to claim 29, characterized in that, The first information includes the set of frequency domain resources associated with the first SS / PBCH block structure; The frequency domain resource set associated with the first SS / PBCH block structure is: the carrier where the first SS / PBCH block structure is located; or, the bandwidth portion (BWP) where the first SS / PBCH block structure is located.

47. The method according to claim 46, characterized in that, The set of frequency domain resources associated with the first SS / PBCH block structure is the carrier in which the first SS / PBCH block structure is located; The carrier containing the first SS / PBCH block structure has a second correspondence with the first SS / PBCH block structure, and the second correspondence is a one-to-one relationship.

48. The method according to claim 46, characterized in that, The set of frequency domain resources associated with the first SS / PBCH block structure is the BWP where the first SS / PBCH block structure is located; Among them, there is a third correspondence between the BWP where the first SS / PBCH block structure is located and the first SS / PBCH block structure, and the third correspondence is a one-to-one relationship.

49. The method according to claim 29, characterized in that, The first information includes the first configuration information; The first configuration information is used to configure the transmission resources or transmission opportunities corresponding to the first SS / PBCH block structure.

50. The method according to claim 49, characterized in that, The first configuration information is used to configure the transmission opportunities corresponding to the first SS / PBCH block structure; The period of the transmission opportunity is the first period, and the difference between the first transmission opportunity and the Kth transmission opportunity is an integer multiple of the first period, where K is a positive integer greater than 1.

51. The method according to claim 29, characterized in that, The first information includes the time interval between the time domain symbols where the first PSS and the first SSS are located; The time interval between the time domain symbols where the first PSS and the first SSS are located has a fourth correspondence with the first SS / PBCH block structure, and the fourth correspondence is a one-to-one relationship.

52. The method according to claim 29, characterized in that, The first information includes the relative positions between the first PSS and the first SSS; The relative position includes at least one of time-domain relative position and frequency-domain relative position.

53. The method according to claim 29, characterized in that, The first information includes the number of symbols occupied by the first PSS; The number of symbols occupied by the first PSS has a fifth correspondence with the first SS / PBCH block structure, and the fifth correspondence is a one-to-one relationship.

54. The method according to claim 53, characterized in that, The first PSS occupies P OFDM symbols in the time domain, where P is a positive integer greater than or equal to 1.

55. A synchronization signal SS / PBCH block receiving device, characterized in that, The device includes: The receiving module is used to receive a first synchronization signal SS / PBCH block, the structure of which is indicated by first information.

56. The apparatus according to claim 55, characterized in that, The first information includes at least one of the following: The first primary synchronization signal (PSS) sequence; the set of frequency domain resources associated with the first SS / PBCH block structure; the first configuration information; the time interval between the time domain symbols where the first PSS and the first SSS are located; the relative position between the first PSS and the first SSS; and the number of time domain symbols occupied by the first PSS.

57. The apparatus according to claim 56, characterized in that, The first information includes the first PSS sequence; The first PSS sequence and the first SS / PBCH block structure have a first correspondence relationship, which is a one-to-one relationship. The first PSS sequence is generated based on the influence factor, which is related to the index corresponding to the first SS / PBCH block structure.

58. The apparatus according to claim 57, characterized in that, The influencing factors include at least one of the following: First numerical value; first coefficient; exponential function.

59. The apparatus according to claim 58, characterized in that, The impact factor includes the first value, the first PSS sequence is generated based on the second sequence, and the sample point index of the second sequence is generated based on the first value.

60. The apparatus according to claim 59, characterized in that, The sample index of the second sequence is determined based on the sum of the following three factors: The sample index of the first PSS sequence, the product of the first coefficient and the first identifier, and the first value; The first coefficient is determined based on predefined protocol information or based on the sequence length of the first PSS sequence, and the first identifier is determined based on the physical cell identifier.

61. The apparatus according to claim 59, characterized in that, The sample index of the second sequence is determined based on the sum of the following three factors: The sample index of the first PSS sequence, the product of the first coefficient and the first identifier, and the first value; The first coefficient is determined based on protocol predefined information or based on the sequence length of the first PSS sequence; the first value is determined based on the product of the index of the first SS / PBCH block structure and the first preset value; and the first identifier is determined based on the physical cell identifier.

62. The apparatus according to claim 61, characterized in that, The index of the first SS / PBCH block structure has a value range of 0 to N-1; Wherein, N is determined based on the number of candidate SS / PBCH block structure types; or, N is related to the number of candidate SS / PBCH block structure types.

63. The apparatus according to claim 60 or 61, characterized in that, The first coefficient is a prime number or integer greater than the first quotient; or, the first coefficient is a prime number or integer closest to the first quotient. The first quotient is a value obtained by using the length of the first PSS sequence as the dividend and the first constant as the divisor.

64. The apparatus according to claim 59, characterized in that, The sample index of the second sequence is determined based on the sum of the following two values: The sample index of the first PSS sequence, and the product of the first value and the first identifier; The first value is determined based on the product of the index of the first SS / PBCH block structure and the second preset value, and the first identifier is determined based on the physical cell identifier.

65. The apparatus according to claim 64, characterized in that, The index of the first SS / PBCH block structure has a value range of 1 to N; or, the index of the first SS / PBCH block structure has a value range of 0 to N-1. Wherein, N is determined based on the number of types of the candidate SS / PBCH block structures; or, N is related to the number of types of the candidate SS / PBCH block structures.

66. The apparatus according to claim 65, characterized in that, The second preset value is a prime number or integer greater than the second quotient; or, the second preset value is a prime number or integer closest to the second quotient. The second quotient is a value obtained by using the length of the first PSS sequence as the dividend and the product of the first constant and N as the divisor.

67. The apparatus according to claim 58, characterized in that, The influence factor includes the exponential function, and the exponential factor of the exponential function is related to the index corresponding to the first SS / PBCH block structure.

68. The apparatus according to claim 67, characterized in that, The exponential function is e j2πin / N j is an imaginary number, i is determined based on the index corresponding to the first SS / PBCH block structure, n is the sample index of the first PSS sequence, and N is determined based on the number of types of the candidate SS / PBCH block structure, or N is related to the number of types of the candidate SS / PBCH block structure.

69. The apparatus according to claim 67, characterized in that, The exponential function is e j2πim / N j is an imaginary number, i is determined based on the index corresponding to the first SS / PBCH block structure, m is the sample index of the second sequence, and N is determined based on the number of types of the candidate SS / PBCH block structure, or N is related to the number of types of the candidate SS / PBCH block structure.

70. The apparatus according to any one of claims 67 to 69, characterized in that, The first PSS sequence is generated by the product of the third sequence and the exponential function; The third sequence is determined based on the difference between the following two: a constant 1 and the product of the second coefficient and the second sequence; the second coefficient is determined based on protocol predefined information.

71. The apparatus according to any one of claims 67 to 69, characterized in that, The first PSS sequence is determined based on the difference between the following two: a constant 1, and the product of the exponential function and the second sequence.

72. The apparatus according to claim 70 or 71, characterized in that, The sample index of the second sequence is determined based on the sum of the following two values: The sample index of the first PSS sequence, and the product of the first coefficient and the first identifier; The first coefficient is determined based on predefined protocol information or based on the sequence length of the first PSS sequence, and the first identifier is determined based on the physical cell identifier.

73. The apparatus according to claim 56, characterized in that, The first information includes the set of frequency domain resources associated with the first SS / PBCH block structure; The frequency domain resource set associated with the first SS / PBCH block structure is: the carrier where the first SS / PBCH block structure is located; or, the bandwidth portion (BWP) where the first SS / PBCH block structure is located.

74. The apparatus according to claim 73, characterized in that, The set of frequency domain resources associated with the first SS / PBCH block structure is the carrier in which the first SS / PBCH block structure is located; The carrier containing the first SS / PBCH block structure has a second correspondence with the first SS / PBCH block structure, and the second correspondence is a one-to-one relationship.

75. The apparatus according to claim 73, characterized in that, The set of frequency domain resources associated with the first SS / PBCH block structure is the BWP where the first SS / PBCH block structure is located; Among them, there is a third correspondence between the BWP where the first SS / PBCH block structure is located and the first SS / PBCH block structure, and the third correspondence is a one-to-one relationship.

76. The apparatus according to claim 56, characterized in that, The first information includes the first configuration information; The first configuration information is used to configure the transmission resources or transmission opportunities corresponding to the first SS / PBCH block structure.

77. The apparatus according to claim 76, characterized in that, The first configuration information is used to configure the transmission opportunities corresponding to the first SS / PBCH block structure; The period of the transmission opportunity is the first period, and the difference between the first transmission opportunity and the Kth transmission opportunity is an integer multiple of the first period, where K is a positive integer greater than 1.

78. The apparatus according to claim 56, characterized in that, The first information includes the time interval between the time domain symbols where the first PSS and the first SSS are located; The time interval between the time domain symbols where the first PSS and the first SSS are located has a fourth correspondence with the first SS / PBCH block structure, and the fourth correspondence is a one-to-one relationship.

79. The apparatus according to claim 56, characterized in that, The first information includes the relative positions between the first PSS and the first SSS; The relative position includes at least one of time-domain relative position and frequency-domain relative position.

80. The apparatus according to claim 56, characterized in that, The first information includes the number of symbols occupied by the first PSS; The number of symbols occupied by the first PSS has a fifth correspondence with the first SS / PBCH block structure, and the fifth correspondence is a one-to-one relationship.

81. The apparatus according to claim 80, characterized in that, The first PSS occupies P OFDM symbols in the time domain, where P is a positive integer greater than or equal to 1.

82. A synchronization signal SS / PBCH block transmission device, characterized in that, The device includes: The transmitting module is used to transmit a first synchronization signal SS / PBCH block, the structure of which is indicated by first information.

83. The apparatus according to claim 82, characterized in that, The first information includes at least one of the following: The first PSS sequence; the set of frequency domain resources associated with the first SS / PBCH block structure; the first configuration information; the time interval between the time domain symbols where the first PSS and the first SSS are located; the relative position between the first PSS and the first SSS; and the number of time domain symbols occupied by the first PSS.

84. The apparatus according to claim 83, characterized in that, The first information includes the first PSS sequence; The first PSS sequence and the first SS / PBCH block structure have a first correspondence relationship, which is a one-to-one relationship. The first PSS sequence is generated based on the influence factor, which is related to the index corresponding to the first SS / PBCH block structure.

85. The apparatus according to claim 84, characterized in that, The influencing factors include at least one of the following: First numerical value; first coefficient; exponential function.

86. The apparatus according to claim 85, characterized in that, The impact factor includes the first value, the first PSS sequence is generated based on the second sequence, and the sample point index of the second sequence is generated based on the first value.

87. The apparatus according to claim 86, characterized in that, The sample index of the second sequence is determined based on the sum of the following three factors: The sample index of the first PSS sequence, the product of the first coefficient and the first identifier, and the first value; The first coefficient is determined based on predefined protocol information or based on the sequence length of the first PSS sequence, and the first identifier is determined based on the physical cell identifier.

88. The apparatus according to claim 86, characterized in that, The sample index of the second sequence is determined based on the sum of the following three factors: The sample index of the first PSS sequence, the product of the first coefficient and the first identifier, and the first value; The first coefficient is determined based on protocol predefined information or based on the sequence length of the first PSS sequence; the first value is determined based on the product of the index of the first SS / PBCH block structure and the first preset value; and the first identifier is determined based on the physical cell identifier.

89. The apparatus according to claim 88, characterized in that, The index of the first SS / PBCH block structure has a value range of 0 to N-1; Wherein, N is determined based on the number of candidate SS / PBCH block structure types; or, N is related to the number of candidate SS / PBCH block structure types.

90. The apparatus according to claim 87 or 88, characterized in that, The first coefficient is a prime number or integer greater than the first quotient; or, the first coefficient is a prime number or integer closest to the first quotient. The first quotient is a value obtained by using the length of the first PSS sequence as the dividend and the first constant as the divisor.

91. The apparatus according to claim 86, characterized in that, The sample index of the second sequence is determined based on the sum of the following two values: The sample index of the first PSS sequence, and the product of the first value and the first identifier; The first value is determined based on the product of the index of the first SS / PBCH block structure and the second preset value, and the first identifier is determined based on the physical cell identifier.

92. The apparatus according to claim 91, characterized in that, The index of the first SS / PBCH block structure has a value range of 1 to N; or, the index of the first SS / PBCH block structure has a value range of 0 to N-1. Wherein, N is determined based on the number of types of the candidate SS / PBCH block structures; or, N is related to the number of types of the candidate SS / PBCH block structures.

93. The apparatus according to claim 92, characterized in that, The second preset value is a prime number or integer greater than the second quotient; or, the second preset value is a prime number or integer closest to the second quotient. The second quotient is a value obtained by using the length of the first PSS sequence as the dividend and the product of the first constant and N as the divisor.

94. The apparatus according to claim 85, characterized in that, The influence factor includes the exponential function, and the exponential factor of the exponential function is related to the index corresponding to the first SS / PBCH block structure.

95. The apparatus according to claim 94, characterized in that, The exponential function is e j2πin / N j is an imaginary number, i is determined based on the index corresponding to the first SS / PBCH block structure, n is the sample index of the first PSS sequence, and N is determined based on the number of types of the candidate SS / PBCH block structure, or N is related to the number of types of the candidate SS / PBCH block structure.

96. The apparatus according to claim 94, characterized in that, The exponential function is e j2πim / N j is an imaginary number, i is determined based on the index corresponding to the first SS / PBCH block structure, m is the sample index of the second sequence, and N is determined based on the number of types of the candidate SS / PBCH block structure, or N is related to the number of types of the candidate SS / PBCH block structure.

97. The apparatus according to any one of claims 94 to 96, characterized in that, The first PSS sequence is generated by the product of the third sequence and the exponential function; The third sequence is determined based on the difference between the following two: a constant 1 and the product of the second coefficient and the second sequence; the second coefficient is determined based on protocol predefined information.

98. The apparatus according to any one of claims 94 to 96, characterized in that, The first PSS sequence is determined based on the difference between the following two: a constant 1, and the product of the exponential function and the second sequence.

99. The apparatus according to claim 97 or 98, characterized in that, The sample index of the second sequence is determined based on the sum of the following two values: The sample index of the first PSS sequence, and the product of the first coefficient and the first identifier; The first coefficient is determined based on predefined protocol information or based on the sequence length of the first PSS sequence, and the first identifier is determined based on the physical cell identifier.

100. The apparatus according to claim 83, characterized in that, The first information includes the set of frequency domain resources associated with the first SS / PBCH block structure; The frequency domain resource set associated with the first SS / PBCH block structure is: the carrier where the first SS / PBCH block structure is located; or, the bandwidth portion (BWP) where the first SS / PBCH block structure is located.

101. The apparatus according to claim 100, characterized in that, The set of frequency domain resources associated with the first SS / PBCH block structure is the carrier in which the first SS / PBCH block structure is located; The carrier containing the first SS / PBCH block structure has a second correspondence with the first SS / PBCH block structure, and the second correspondence is a one-to-one relationship.

102. The apparatus according to claim 100, characterized in that, The set of frequency domain resources associated with the first SS / PBCH block structure is the BWP where the first SS / PBCH block structure is located; Among them, there is a third correspondence between the BWP where the first SS / PBCH block structure is located and the first SS / PBCH block structure, and the third correspondence is a one-to-one relationship.

103. The apparatus according to claim 83, characterized in that, The first information includes the first configuration information; The first configuration information is used to configure the transmission resources or transmission opportunities corresponding to the first SS / PBCH block structure.

104. The apparatus according to claim 103, characterized in that, The first configuration information is used to configure the transmission opportunities corresponding to the first SS / PBCH block structure; The period of the transmission opportunity is the first period, and the difference between the first transmission opportunity and the Kth transmission opportunity is an integer multiple of the first period, where K is a positive integer greater than 1.

105. The apparatus according to claim 83, characterized in that, The first information includes the time interval between the time domain symbols where the first PSS and the first SSS are located; The time interval between the time domain symbols where the first PSS and the first SSS are located has a fourth correspondence with the first SS / PBCH block structure, and the fourth correspondence is a one-to-one relationship.

106. The apparatus according to claim 83, characterized in that, The first information includes the relative positions between the first PSS and the first SSS; The relative position includes at least one of time-domain relative position and frequency-domain relative position.

107. The apparatus according to claim 83, characterized in that, The first information includes the number of symbols occupied by the first PSS; The number of symbols occupied by the first PSS has a fifth correspondence with the first SS / PBCH block structure, and the fifth correspondence is a one-to-one relationship.

108. The apparatus according to claim 107, characterized in that, The first PSS occupies P OFDM symbols in the time domain, where P is a positive integer greater than or equal to 1.

109. A terminal device, characterized in that, The terminal device includes: A processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the SS / PBCH block reception method as described in any one of claims 1 to 27.

110. A network device, characterized in that, The network device includes: A processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the SS / PBCH block transmission method as described in any one of claims 28 to 54.

111. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one program, which is loaded and executed by a processor to implement the SS / PBCH block receiving method as described in any one of claims 1 to 27, or the SS / PBCH block transmitting method as described in any one of claims 28 to 54.

112. A chip, characterized in that, The chip includes programmable logic circuits and / or program instructions. When the chip is running on a terminal device, it implements the SS / PBCH block receiving method as described in any one of claims 1 to 27, or the SS / PBCH block transmitting method as described in any one of claims 28 to 54.

113. A computer program product, characterized in that, The computer program product includes computer instructions stored in a computer-readable storage medium, a processor retrieving the computer instructions from the computer-readable storage medium, and the processor executing the computer instructions to implement the SS / PBCH block receiving method as described in any one of claims 1 to 27, or the SS / PBCH block transmitting method as described in any one of claims 28 to 54.

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