Information determination method and apparatus, device, medium, and program product

Abstract

The present application relates to the technical field of communications, and discloses an information determination method and apparatus, a device, a medium, and a program product. The method comprises: receiving a first primary synchronization signal (PSS) sequence; and determining a first SS / PBCH block structure corresponding to the first PSS sequence, the first SS / PBCH block structure being one of at least two candidate SS / PBCH block structures. The method for determining an SS / PBCH block structure on the basis of PSS sequence detection can reduce the power consumption of a terminal device, and reduce detection latency.

Description

Information determination method, device, equipment, medium and program product TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to an information determination method, device, equipment, medium and program product. BACKGROUND

[0002] Downlink synchronization is a process of aligning time and frequency between a receiving end and a sending end in a communication system, which is realized through specific synchronization signals, to ensure that the receiving end can accurately identify signal boundaries, recover data clock and demodulate signals. Downlink synchronization is crucial for reducing bit error rate, improving communication efficiency and reliability, and is the basis for realizing stable data transmission. SUMMARY

[0003] Embodiments of the present application provide an information determination method, device, equipment, medium and program product. The technical solution is as follows:

[0004] According to an aspect of an embodiment of the present application, an information determination method is provided, comprising:

[0005] receiving a first primary synchronization signal (PSS) sequence;

[0006] determining a first synchronization signal (SS) / physical broadcast channel (PBCH) block structure corresponding to the first PSS sequence, the first SS / PBCH block structure being one of at least two candidate SS / PBCH block structures.

[0007] According to another aspect of an embodiment of the present application, an information determination method is provided, comprising:

[0008] sending a first primary synchronization signal (PSS) sequence, the first PSS sequence corresponding to a first SS / PBCH block structure, the first SS / PBCH block structure being one of at least two candidate SS / PBCH block structures.

[0009] According to another aspect of an embodiment of the present application, an information determination device is provided, comprising:

[0010] a receiving module configured to receive a first primary synchronization signal (PSS) sequence;

[0011] a determining module configured to determine a first SS / PBCH block structure corresponding to the first PSS sequence, the first SS / PBCH block structure being one of at least two candidate SS / PBCH block structures.

[0012] According to another aspect of the embodiments of the present application, an information determination apparatus is provided, the information determination apparatus comprising:

[0013] The sending module is configured to send a first primary synchronization signal (PSS) sequence, the first PSS sequence corresponding to a first SS / PBCH block structure, the first SS / PBCH block structure being one of at least two candidate SS / PBCH block structures.

[0014] According to another aspect of the embodiments of the present application, a terminal device is provided, the terminal device comprising: 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 information determination method according to any one of the above aspects.

[0015] According to another aspect of the embodiments of the present application, a network device is provided, the network device comprising: 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 information determination method according to any one of the above aspects.

[0016] According to another aspect of the embodiments of the present application, a computer readable storage medium is provided, the computer readable storage medium storing at least one program, the at least one program being loaded and executed by a processor to implement the information determination method according to any one of the above aspects.

[0017] According to another aspect of the embodiments of the present application, a chip is provided, the chip comprising a programmable logic circuit and / or program instructions, when the chip is running on a terminal device, the chip is configured to implement the information determination method according to any one of the above aspects; when the chip is running on a network device, the chip is configured to implement the information determination method according to any one of the above aspects.

[0018] According to another aspect of the embodiments of the present application, a computer program product or computer program is provided, the computer program product or computer program comprising computer instructions, the computer instructions being 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 information determination method according to any one of the above aspects.

[0019] The technical solutions provided by the embodiments of the present application can at least bring the following beneficial effects:

[0020] In the embodiments of the present application, different PSS sequences correspond to different SS / PBCH block structures, and the terminal device determines the SS / PBCH block structure corresponding to the PSS sequence from at least two candidate SS / PBCH block structures supported by the system by performing detection on the received PSS sequence. Compared with the method in the related art in which the terminal device detects at least two candidate SS / PBCH block structures respectively, the method of determining the SS / PBCH block structure based on the PSS sequence detection can reduce the power consumption of the terminal device and reduce the detection delay. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] FIG. 1 shows a schematic diagram of a mobile communication system according to some illustrative embodiments of the present application;

[0023] FIG. 2 shows a schematic diagram of the structure of a synchronization signal block according to an exemplary embodiment of the present application;

[0024] FIG. 3 shows a schematic diagram of the structure of a synchronization signal block according to an exemplary embodiment of the present application;

[0025] FIG. 4 shows a schematic diagram of the structure of a synchronization signal block according to an exemplary embodiment of the present application;

[0026] FIG. 5 shows a schematic diagram of the structure of a synchronization signal block according to an exemplary embodiment of the present application;

[0027] FIG. 6 shows a flowchart of an information determination method according to an exemplary embodiment of the present application;

[0028] FIG. 7 shows a flowchart of an information determination method according to an exemplary embodiment of the present application;

[0029] FIG. 8 shows a block diagram of an information determination apparatus according to an exemplary embodiment of the present application;

[0030] FIG. 9 shows a block diagram of an information determination apparatus according to an exemplary embodiment of the present application;

[0031] FIG. 10 shows a schematic diagram of a terminal device according to an exemplary embodiment of the present application;

[0032] FIG. 11 shows a schematic diagram of a network device according to an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0033] For the purpose of clarity, technical solutions and advantages of the present application will be further described in detail below with reference to the accompanying drawings. Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings. The following description relates to the accompanying drawings, in which the same reference numerals in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0034] The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in the present application and the appended claims, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0035] It should be understood that, although the terms first, second, third, etc. can be used herein to describe various information, the information should not be limited to these terms. These terms are only used to differentiate one piece of information from another piece of information. For example, a first information can also be called a second information without departing from the scope of the present application, and similarly, a second information can also be called a first information. Depending on the context, the word "if' as used herein can be interpreted as meaning "when" or "upon determination" or "in response to determining."

[0036] The technical solutions described in some embodiments of the present application can be applied to various communication systems, for example: a Long Term Evolution (LTE) system, an Advanced Long Term Evolution (LTE-A) system, a New Radio (NR) system, an evolved system of the NR system, an LTE-based access to unlicensed spectrum (LTE-U) system, an NR-based access to unlicensed spectrum (NR-U) system, a Non-Terrestrial Networks (NTN) system, a Universal Mobile Telecommunication System (UMTS), a Wireless Local Area Networks (WLAN), a Wireless Fidelity (WiFi), a 5th-Generation (5G) system, a cellular Internet of Things system, a cellular passive Internet of Things system, and can also be applied to an evolved system of the 5G NR system, and can also be applied to a 6G and an evolved system thereafter.

[0037] It should be understood that in some embodiments of the present application, "5G" can also be referred to as "5G NR" or "NR".

[0038] It should be understood that in the description of the embodiments of the present application, the term "corresponding" can represent a direct or indirect corresponding relationship between the two, can also represent an associated relationship between the two, and can also indicate a relationship such as indicated, configured, and configured.

[0039] In the embodiments of the present application, "predefined" can be implemented by pre-saving corresponding codes, tables or other means for indicating related information in devices (for example, including terminal devices and network devices), and the specific implementation manner of the present application is not limited. For example, predefined can refer to defined in a protocol.

[0040] In the embodiments of the present application, "protocol" can refer to a standard protocol in the communication field, for example, can include an LTE protocol, an NR protocol and a related protocol applied to a future communication system, and the present application does not limit this.

[0041] FIG. 1 shows a schematic diagram of a mobile communication system according to an example embodiment of the present application. The mobile communication system includes a network device 110 and a terminal device 120, and can or can not include a terminal device 130, which is not limited in the present application.

[0042] The network device 110 in the present application provides a wireless communication function, and the 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 base station (for example, a home evolved node B or a home node B, HNB), a baseband 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., and can also be a next generation node B (gNB) or a transmission point (TRP or TP) in a 5th generation (5G) mobile communication system, or an antenna panel or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or a network node constituting a gNB or a transmission point, such as a baseband unit (BBU) or a distributed unit (DU), etc., or a base station in a beyond 5th generation (B5G) mobile communication system or a 6th generation (6G) mobile communication system, or a core network (CN), a fronthaul, a backhaul, a radio access network (RAN), a network slice, etc., or a serving cell, a primary cell (PCell), a primary secondary cell (PSCell), a special cell (SpCell), a secondary cell (SCell), a neighbor cell, etc., of a terminal device.

[0043] The terminal device 120 in the present application, also known as User Equipment (UE), access terminal device, user unit, user station, mobile station, mobile station, remote station, remote terminal device, mobile device, user terminal device, terminal device, wireless communication device, user agent, user equipment. The terminal device includes but is not limited to: handheld devices, wearable devices, vehicle-mounted devices, and Internet of Things devices, etc., such as: mobile phones, tablet computers, e-book readers, laptop computers, desktop computers, televisions, game consoles, Mobile Internet Devices (MID), Augmented Reality (AR) terminal devices, Virtual Reality (VR) terminal devices, and 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, hand-held devices, electronic tags, controllers, wireless terminal devices in industrial control, wireless terminal devices in self-driving, wireless terminal devices in remote medical, wireless terminal devices in smart grid, wireless terminal devices in transportation safety, wireless terminal devices in smart city, wireless terminal devices in smart home, wireless terminal devices in remote medical surgery, cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), television set-top boxes (STBs), customer premise equipment (CPE), etc.

[0044] In some embodiments, the network device 110 and the terminal device 120 communicate with each other through a certain air interface technology, such as the Uu interface.

[0045] Exemplarily, there are two communication scenarios between the network device 110 and the terminal device 120: an uplink communication scenario and a downlink communication scenario. The uplink communication, also referred to as uplink transmission, refers to that the terminal device 120 sends a signal or data to the network device 110; the downlink communication, also referred to as downlink transmission, refers to that the network device 110 sends a signal or data to the terminal device 120.

[0046] In some embodiments, the terminal device 120 and the terminal device 130 communicate with each other through a certain air interface technology, for example, a PC5 interface.

[0047] Exemplarily, there are two communication scenarios between the terminal device 120 and the terminal device 130: a first sidelink communication scenario and a second sidelink communication scenario. The first sidelink communication refers to that the terminal device 120 sends a signal or data to the terminal device 130; the second sidelink communication refers to that the terminal device 130 sends a signal or data to the terminal device 120.

[0048] In some embodiments, the terminal device 120 and the terminal device 130 are both in network coverage and located in the same cell, or the terminal device 120 and the terminal device 130 are both in network coverage but located in different cells, or the terminal device 120 is in network coverage but the terminal device 130 is out of network coverage.

[0049] In some embodiments of the present application, the "NR" can also be referred to as a 5G NR system or a 5G system. The 5G mobile communication system can include a non-standalone (Non-Stand Alone, NSA) and / or standalone (Stand Alone, SA).

[0050] The technical solutions provided by the embodiments in the application can also be applied to Machine Type Communication (MTC), Long Term Evolution-Machine (LTE-M), Device to Device (D2D) network, Machine to Machine (M2M) network, Internet of Things (IoT) network, or other networks. The IoT network may, for example, include a vehicle network. In the vehicle network system, the communication modes are collectively referred to as Vehicle to X (V2X, X can represent any object), for example, the V2X can include Vehicle to Vehicle (V2V) communication, Vehicle to Infrastructure (V2I) communication, Vehicle to Pedestrian (V2P) communication, or Vehicle to Network (V2N) communication, and the like.

[0051] The mobile communication system provided by the embodiments of the application can be applied to, but is not limited to, at least one of the following communication scenarios: an uplink communication scenario, a downlink communication scenario, and a sidelink communication scenario.

[0052] Next, the related technologies involved in the embodiments of the application are introduced:

[0053] · Physical Downlink Control Channel (PDCCH) detection

[0054] A network device sends a downlink control information (DCI) to a terminal device, the DCI is used for downlink scheduling, for example, scheduling a physical downlink shared channel (PDSCH), or the DCI is used for uplink authorization, for example, scheduling a physical uplink shared channel (PUSCH), or the DCI is used for transmitting common control information, the DCI is carried through a PDCCH. The network device configures a search space for the terminal device (or simply referred to as a terminal), and the network device can configure different aggregation levels (AL), and under each aggregation level, the number of candidate PDCCHs that the terminal device needs to monitor is configured. The terminal device needs to perform PDCCH detection in the search space. Since the terminal device does not know which resources in the search space the network device will send the PDCCH, the terminal device needs to detect each candidate PDCCH resource in the search space, and this process is called PDCCH blind detection. The maximum number of PDCCHs that the terminal device needs to monitor in a slot is related to the subcarrier spacing, for example, when the subcarrier spacing is 15 kHz, the maximum number of PDCCHs that the terminal device needs to monitor in a 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 15 kHz, 30 kHz, 60 kHz, and 120 kHz, respectively.

[0055] Table 1

[0056] In the 5G NR system, the DCI adopts Polar coding, and the terminal device needs to perform decoding processing every time it detects the PDCCH, which will cause high power consumption and increase the processing delay.

[0057] The transmission resource of one PDCCH can include M1 control channel elements (CCEs), i.e., corresponding to different aggregation levels AL, for example, M1 = 1, 2, 4, 8, 16, 32. The relationship between the aggregation level and the number of CCEs is shown in Table 2; each CCE can include M2 resource element groups (REGs), for example, M2 = 6, one REG corresponds to one physical resource block (PRB) in the frequency domain and one orthogonal frequency division multiplexing (OFDM) symbol in the time domain; the number of CCEs occupied by the PDCCH is different, and the transmission reliability is also different, for example, the more CCEs occupied by the PDCCH, the higher the transmission reliability.

[0058] Table 2

[0059] ·Terminal device complexity optimization

[0060] The terminal device can be simply referred to as a terminal, and the terminal device design in the related art supports a very high peak rate. Therefore, the terminal device has a high capability requirement. The LTE standard defines that the maximum single carrier bandwidth is 20MHz, and a larger bandwidth is implemented through multi-carrier aggregation. The maximum carrier bandwidth of 5G NR in the sub-6GHz frequency band is finally defined as 100MHz, which is 5 times of LTE, and the maximum carrier bandwidth in the millimeter wave frequency band is 400MHz. The required multiple-input multiple-output (MIMO) antenna scale of NR is further improved. The terminal antenna reference configuration of LTE is one transmission and two receptions, and the NR Rel-15 (15th version) requires two transmissions and four receptions at a frequency point above 2500MHz.

[0061] However, some application scenarios of NR do not require such high processing capability in terms of processing capacity and speed, including Internet of Things, industrial automation, and wearable device applications. In these scenarios, it is required that the communication hardware has a lower volume and power consumption, and the light weight capability requirement is a feature of such terminals. Based on such considerations, the NR Rel-17 (17th version) studies the introduction of a reduced capability (RedCap) compact terminal standard.

[0062] The compact terminal standard reduces some of the mandatory capabilities of NR Rel-15 / Rel-16. Corresponding terminal function groups are defined for such capabilities. The compact terminal standard further optimizes terminal identification, access procedures and power consumption for measurements to adapt to the relevant application scenarios. The design of such compact terminal devices can significantly reduce the complexity of the terminal device hardware. At the same time, the energy consumption of the terminal device can also be reduced accordingly, and the effect of energy saving can also be achieved.

[0063] Before introducing the technical solutions of the present application, some contents related to the present application will be introduced and explained. The following contents can be combined with the technical solutions of the embodiments of the present application as optional schemes, which all belong to the protection scope of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0064] • SS / PBCH block

[0065] In order to ensure normal communication between the terminal device and the network device, the terminal device must obtain synchronization. The terminal device can obtain synchronization according to the synchronization signal (Synchronization Signal, SS) sent by the network device, so as to perform subsequent data reception and / or transmission. The terminal device can also obtain the master information block (Master Information Block, MIB) according to the physical broadcast channel (Physical Broadcast Channel, PBCH) sent by the network device.

[0066] For example, the network device sends the synchronization signal (SS) and the PBCH in the form of a synchronization signal physical broadcast channel block (Synchronization Signal Block / PBCH Block, SS / PBCH Block). The synchronization signal includes a primary synchronization signal (Primary Synchronization Signal, PSS) and a secondary synchronization signal (Secondary Synchronization Signal, SSS). The PRB used to map the PBCH can also be used to map the reference signal (such as the PBCH demodulation reference signal (Demodulation Reference Signal, DMRS)). The PBCH carries physical layer information and / or high layer information. The SS / PBCH block or simply the synchronization signal block (Synchronization Signal Block, SSB).

[0067] Figure 2 illustrates a schematic diagram of the SS / PBCH block structure provided in an exemplary embodiment of this application. The SS / PBCH block has a frequency domain size of 20 PRBs and occupies 4 OFDM symbols in the time domain. PSS and SSS are located in the first and third OFDM symbols, respectively. The PSS and SSS sequences are both 127 in length and are mapped to the middle 12 PRBs (including guard subcarriers) of the 20 PRBs. PBCH is located on some subcarriers corresponding to the second, fourth, and third OFDM symbols. In the second and fourth OFDM symbols, PBCH (including PBCH DMRS) is mapped to all subcarriers corresponding to the 20 PRBs (a total of 240 subcarriers). In the third OFDM symbol, PBCH (including PBCH DMRS) is mapped to the 4 PRBs with the lowest frequency domain position and the 4 PRBs with the highest frequency domain position among the 20 PRBs.

[0068] 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.

[0069] 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.

[0070] Table 3 Maximum Transmission Bandwidth N RB

[0071] To support scenarios with system bandwidth less than 20 PRB, a possible SS / PBCH block structure is as follows:

[0072] • The frequency domain resource size of the SS / PBCH block is 11

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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).

[0077] 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.

[0078] • The frequency domain resource size of the SS / PBCH block is 12

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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).

[0083] 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.

[0084] • The frequency domain resource size of the SS / PBCH block is 15.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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).

[0089] 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.

[0090] 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.

[0091] • Methods of generating synchronization signals

[0092] In some embodiments, the PSS sequence (denoted as d) PSS (n) is determined by the following formula (1):

[0093] Where x(i+7)=(x(i+4)+x(i))mod2.

[0094] Furthermore, [x(6) x(5) x(4) x(3) x(2) x(1) x(0)] = [1 1 1 0 1 1 0].

[0095] In formula (1) based on Sure, That is, the physical layer cell identifier (Cell-ID), as shown in the following formula (2):

[0096] in,

[0097] 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 terminal device needs to detect multiple possible SS / PBCH block structures. For example, for different SS / PBCH block structures, the interval between the OFDM symbols occupied by the corresponding PSS and SSS may be different. If the terminal device detects the PSS but does not know the definite SS / PBCH block structure, it needs to detect the SSS on all possible symbols carrying the SSS signal, which increases the detection complexity and the power consumption of the terminal device.

[0098] For example, the system supports two SS / PBCH block structures shown in Figures 2 and 4(c). The relative positions of the PSS and SSS differ between these two different SS / PBCH block structures. For the SS / PBCH block structure shown in Figure 2, the interval between the OFDM symbols occupied by the PSS and SSS is one OFDM symbol. For the SS / PBCH block structure shown in Figure 4(c), the interval between the OFDM symbols occupied by the PSS and SSS is two OFDM symbols. If the terminal device cannot determine the SS / PBCH block structure after detecting the PSS, it needs to detect the OFDM symbol positions occupied by the SSS in both SS / PBCH block structures.

[0099] For example, for the SS / PBCH block structure shown in Figure 2, the SSS needs to be detected on the second OFDM symbol after the OFDM symbol containing the PSS. Similarly, for the SS / PBCH block structure shown in Figure 4(c), the SSS needs to be detected on the third OFDM symbol after the OFDM symbol containing the PSS. If the SSS is detected on the second OFDM symbol after the OFDM symbol containing the PSS, it can be determined that it is the SS / PBCH block structure shown in Figure 2; if the SSS is detected on the third OFDM symbol after the OFDM symbol containing the PSS, it can be determined that it is the SS / PBCH block structure shown in Figure 4(c).

[0100] The aforementioned detection methods require the terminal device to detect multiple possible SS / PBCH block structures, which increases detection complexity and power consumption. Therefore, how to detect multiple SS / PBCH block structures is a problem that needs to be solved.

[0101] Figure 6 illustrates a flowchart of an information determination method provided by 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:

[0102] Step 610: Receive the first PSS sequence;

[0103] 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.

[0104] The SS / PBCH block structure includes a synchronization signal and a PBCH. The synchronization signal is used at least to achieve downlink synchronization. Optionally, the synchronization signal includes a PSS and an SSS. The PBCH is used to carry the MIB, and all or part of the PRB used to map the PBCH is also used to map a reference signal (such as the PBCH DMRS), which is used by the terminal equipment to detect the PBCH.

[0105] In some embodiments, the network device generates different PSS sequences for different SS / PBCH block structures. This can also be understood as different PSS sequences corresponding to different SS / PBCH block structures. The terminal device receives the PSS sequence sent by the network device and determines the SS / PBCH block structure corresponding to that PSS sequence.

[0106] Step 620: Determine the first SS / PBCH block structure corresponding to the first PSS sequence. The first SS / PBCH block structure is one of at least two candidate SS / PBCH block structures.

[0107] Optionally, the terminal device receives a first PSS sequence sent by the network device and determines a corresponding first SS / PBCH block structure based on the first PSS sequence. The first SS / PBCH block structure is one of at least two candidate SS / PBCH block structures.

[0108] In some embodiments, the terminal device supports one SS / PBCH block structure. In other embodiments, the terminal device supports at least two SS / PBCH block structures, wherein the PSS sequences corresponding to the at least two SS / PBCH block structures are different.

[0109] In some embodiments, the at least two SS / PBCH block structures may also be referred to as at least two candidate SS / PBCH block structures. Optionally, for each candidate SS / PBCH block structure among 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.

[0110] After receiving the first PSS sequence, the terminal device performs correlation detection on the first PSS sequence and candidate PSS sequences to identify which type of candidate PSS sequence the first PSS sequence belongs to. That is, based on the candidate PSS sequence with the highest correlation peak with the first PSS sequence, the SS / PBCH block structure type or the index corresponding to the SS / PBCH block structure corresponding to the first PSS sequence is identified.

[0111] In some embodiments, the first PSS sequence is generated based on an impact factor. The impact factor is related to the first SS / PBCH block structure, specifically, it is related to the index corresponding to the first SS / PBCH block structure. Different first PSS sequences can be generated by changing the value of the impact factor.

[0112] In some embodiments, the index corresponding to the SS / PBCH block structure is used to identify different SS / PBCH block structures. Optionally, the index corresponding to the first SS / PBCH block structure is an index used to identify the first SS / PBCH block structure.

[0113] In summary, the method provided in this application addresses the issue that different SS / PBCH block structures correspond to different PSS sequences. The terminal device performs detection on the received PSS sequence to determine the SS / PBCH block structure corresponding to the PSS sequence from at least two candidate SS / PBCH block structures supported by the system. Compared to related technologies where the terminal device detects at least two candidate SS / PBCH block structures separately, this method, which determines the SS / PBCH block structure based on PSS sequence detection, reduces the power consumption of the terminal device and lowers the detection latency.

[0114] Figure 7 illustrates a flowchart of an information determination method provided by 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:

[0115] Step 710: Send the first PSS sequence, which corresponds to the first SS / PBCH block structure. The first SS / PBCH block structure is one of at least two candidate SS / PBCH block structures.

[0116] In some embodiments, the network device determines the synchronization signal block structure to be sent to the terminal device, generates a PSS sequence based on the synchronization signal block structure, and sends the PSS sequence to the terminal device.

[0117] The synchronization signal block structure can be simply referred to as the SS / PBCH block structure. The SS / PBCH block structure includes a synchronization signal and a PBCH. The synchronization signal is used at least to achieve downlink synchronization. Optionally, the synchronization signal includes a PSS and an SSS. The PBCH is used to carry the MIB, and all or part of the PRB used to map the PBCH is also used to map a reference signal (such as the PBCH DMRS), which is used by the terminal equipment to detect the PBCH.

[0118] In some embodiments, the network device generates different synchronization signals for different synchronization signal block structures; this can also be understood as different PSS sequences corresponding to different SS / PBCH block structures. The network device then sends the PSS sequences to the terminal device.

[0119] Optionally, the network device sends a first PSS sequence to the terminal device, and the terminal device determines the corresponding first SS / PBCH block structure based on the first PSS sequence. The first SS / PBCH block structure is one of at least two candidate SS / PBCH block structures.

[0120] In some embodiments, the first PSS sequence is generated based on an impact factor. The impact factor is related to the first SS / PBCH block structure, specifically, it is related to the index corresponding to the first SS / PBCH block structure. Different first PSS sequences can be generated by changing the value of the impact factor.

[0121] In some embodiments, the index corresponding to the SS / PBCH block structure is used to identify different SS / PBCH block structures. Optionally, the index corresponding to the first SS / PBCH block structure is an index used to identify the first SS / PBCH block structure.

[0122] In summary, the method provided in this application addresses the issue that different SS / PBCH block structures correspond to different PSS sequences. The terminal device performs detection on the received PSS sequence to determine the SS / PBCH block structure corresponding to the PSS sequence from at least two candidate SS / PBCH block structures supported by the system. Compared to related technologies where the terminal device detects at least two candidate SS / PBCH block structures separately, this method, which determines the SS / PBCH block structure based on PSS sequence detection, reduces the power consumption of the terminal device and lowers the detection latency.

[0123] Next, based on the embodiments shown in Figures 6 and 7, we will further introduce the first PSS sequence and the influence factors for generating the first PSS sequence.

[0124] 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.

[0125] In some embodiments, the influencing factor includes at least one of a first numerical value and an exponential function. The first numerical value is used to influence parameter m in the formula for generating the first PSS sequence, and the exponential function is used to influence parameter x(m) or 1-2x(m) in the formula for generating the first PSS sequence. Wherein, x(m) is the second sequence, m is the sample index of the second sequence, and 1-2x(m) is the third sequence.

[0126] In some embodiments, the impact factor includes a first numerical value; or, the impact factor includes an exponential function; or, the impact factor includes both a first numerical value and an exponential function.

[0127] 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.

[0128] 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.

[0129] Optionally, when the influence factor includes a first numerical value and an exponential function, the first PSS sequence is generated based on the second sequence, the sample index of the second sequence is generated based on the first numerical value, 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 numerical value and the exponential factor of the exponential function.

[0130] 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.

[0131] The second sequence mentioned above is a pseudo-random sequence. For example, the second sequence is an m-sequence.

[0132] The different scenarios of the influencing factor are introduced below.

[0133] 1. Cases where the impact factor includes the first numerical value.

[0134] In some embodiments, the impact factor includes a first numerical value. The first numerical value is used to influence the sample index of the second sequence. Optionally, when the impact factor includes a first numerical 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 numerical value.

[0135] 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.

[0136] In some embodiments, the sample index of the second sequence is generated based on the first numerical value. Optionally, the sample index of the second sequence will also be different depending on the value of the first numerical value.

[0137] 1.1 The first value is A

[0138] 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, a first coefficient, and a first identifier. The product of and , the first value A. Wherein, the first coefficient is determined based on predefined protocol information, and the first value A is determined based on predefined protocol information.

[0139] 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. This can also be understood as the sample index n of the first PSS sequence indicating the nth value among the N 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. For example, the first PSS sequence includes 127 values, and the range of the sample index n of the first PSS sequence is [0, 126], that is, N = 127, and the range of n is [0, 126].

[0140] 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):

[0141] 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 43 represents the first coefficient. This is the first identifier, which is based on the physical cell identifier. As shown in formula (2), A is the first value.

[0142] In some embodiments, the influence factor includes a first value A, where A is an integer greater than or equal to 0.

[0143] In some embodiments, the first value (first value A) is equal to the value corresponding to the first SS / PBCH block structure. Different SS / PBCH block structures correspond to different first values; that is, the value of the first value A is different when the SS / PBCH block structure is different.

[0144] In some embodiments, the number of possible values ​​for the first value A is equal to the number of types of candidate SS / PBCH block structures.

[0145] In some embodiments, when the number of candidate SS / PBCH block structure types includes K, when the candidate SS / PBCH block structure is the first type, the first value A is a first value; when the candidate SS / PBCH block structure is the second type, the first value A is a second value; and so on, until the candidate SS / PBCH block structure is the Kth type, where the first value A is the jth value. Here, the number of K and j is equal, and both K and j are integers greater than or equal to 0.

[0146] Table 4 shows the correspondence between the number of candidate SS / PBCH block structures and the first value A.

[0147] Table 4

[0148] For example, referring to Table 4, when the terminal device supports one SS / PBCH block structure, that is, when the number of candidate SS / PBCH block structure types is one, the first value A is 0.

[0149] Optionally, when there are two types of candidate SS / PBCH block structures, the first value A can take two values. Specifically, when the candidate SS / PBCH block structure is the first candidate SS / PBCH block structure, the first value A is the first value; when the candidate SS / PBCH block structure is the second candidate SS / PBCH block structure, the first value A is the second value.

[0150] For example, referring to Table 4, when the terminal device supports two SS / PBCH block structures, that is, when there are two types of candidate SS / PBCH block structures, the first value A takes the values ​​0 and 22. When the candidate SS / PBCH block structure is the first type, A takes the value 0; when the candidate SS / PBCH block structure is the second type, A takes the value 22. Alternatively, when there are two types of candidate SS / PBCH block structures, the first value A takes the values ​​0 and 21. When the candidate SS / PBCH block structure is the first type, A takes the value 0; when the candidate SS / PBCH block structure is the second type, A takes the value 21.

[0151] Optionally, when there are three types of candidate SS / PBCH block structures, the first value A can take three values. Specifically, when the candidate SS / PBCH block structure is the first candidate SS / PBCH block structure, the first value A is the first value; when the candidate SS / PBCH block structure is the second candidate SS / PBCH block structure, the first value A is the second value; and when the candidate SS / PBCH block structure is the third candidate SS / PBCH block structure, the first value A is the third value.

[0152] For example, referring to Table 4, when the terminal device supports three SS / PBCH block structures, that is, when there are three types of candidate SS / PBCH block structures, the first value A takes the values ​​0, 14, and 28. When the candidate SS / PBCH block structure is the first type, A takes the value 0; when the candidate SS / PBCH block structure is the second type, A takes the value 14; and when the candidate SS / PBCH block structure is the third type, A takes the value 28. Alternatively, when there are three types of candidate SS / PBCH block structures, the first value A takes the values ​​0, 13, and 26. When the candidate SS / PBCH block structure is the first type, A takes the value 0; when the candidate SS / PBCH block structure is the second type, A takes the value 13; and when the candidate SS / PBCH block structure is the third type, A takes the value 26.

[0153] Optionally, when there are four types of candidate SS / PBCH block structures, the first value A can take four values. Specifically, when the candidate SS / PBCH block structure is the first candidate SS / PBCH block structure, the first value A is the first value; when the candidate SS / PBCH block structure is the second candidate SS / PBCH block structure, the first value A is the second value; when the candidate SS / PBCH block structure is the third candidate SS / PBCH block structure, the first value A is the third value; and when the candidate SS / PBCH block structure is the fourth candidate SS / PBCH block structure, the first value A is the fourth value.

[0154] For example, referring to Table 4, when the terminal device supports four SS / PBCH block structures, that is, when there are four types of candidate SS / PBCH block structures, the first value A takes the values ​​0, 11, 22, and 33. When the candidate SS / PBCH block structure is the first type, A takes the value 0; when the candidate SS / PBCH block structure is the second type, A takes the value 11; when the candidate SS / PBCH block structure is the third type, A takes the value 22; and when the candidate SS / PBCH block structure is the fourth type, A takes the value 33.

[0155] 1.2 The first value is B·i

[0156] 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, a first coefficient, and a first identifier. The product of the first value B·i is determined based on predefined protocol information. The first value B·i is determined based on the product of the index i of the first SS / PBCH block structure and the first preset value B, where the first preset value B is determined based on predefined protocol information.

[0157] 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 indicates the nth value among the N 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.

[0158] 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):

[0159] 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 43 represents the first coefficient. This is the first identifier, which is based on the physical cell identifier. As shown in formula (2), B·i is the first value.

[0160] In some embodiments, the influence factor includes a first value B·i. Here, i is the index of the first SS / PBCH block structure, B is a first preset value, and B is an integer greater than or equal to 0.

[0161] In some embodiments, the first value (i.e., B·i) is determined based on the product of the index i of the first SS / PBCH block structure and the first preset value B.

[0162] In some embodiments, the index i of the first SS / PBCH block structure is related to the number of candidate SS / PBCH block structure types; that is, the index i of the first SS / PBCH block structure is determined based on the number of candidate SS / PBCH block structure types.

[0163] In some embodiments, when the number of candidate SS / PBCH block structures includes K types, the index i of the first SS / PBCH block structure is in the range of [0, K-1], where K is an integer greater than or equal to 0.

[0164] 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.

[0165] Table 5 shows the correspondence between the number of candidate SS / PBCH block structures and the first value B·i.

[0166] Table 5

[0167] For example, referring to Table 5, when there is only one type of candidate SS / PBCH block structure, the index of the first SS / PBCH block structure is 0, the value of the first preset value is not limited, and the value of the first value B·i is 0.

[0168] For example, referring to Table 5, when there are two types of candidate SS / PBCH block structures, the index of the first SS / PBCH block structure is 0 and 1. In some embodiments, the first preset value B is 22. When the index of the first SS / PBCH block structure is 0, the first value B·i is 0; when the index of the first SS / PBCH block structure is 1, the first value B·i is 22. In other embodiments, the first preset value B is 21. When the index of the first SS / PBCH block structure is 0, the first value B·i is 0; when the index of the first SS / PBCH block structure is 1, the first value B·i is 21.

[0169] For example, referring to Table 5, 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. In some embodiments, assuming the first preset value B is 13, when the index of the first SS / PBCH block structure is 0, the first value B·i is 0; when the index of the first SS / PBCH block structure is 1, the first value B·i is 13; and when the index of the first SS / PBCH block structure is 2, the first value B·i is 26. In other embodiments, assuming the first preset value B is 14, when the index of the first SS / PBCH block structure is 0, the first value B·i is 0; when the index of the first SS / PBCH block structure is 1, the first value B·i is 14; and when the index of the first SS / PBCH block structure is 2, the first value B·i is 28.

[0170] For example, referring to Table 5, 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. In some embodiments, assuming the first preset value B is 11, when the index of the first SS / PBCH block structure is 0, the first value B·i is 0; when the index of the first SS / PBCH block structure is 1, the first value B·i is 11; when the index of the first SS / PBCH block structure is 2, the first value B·i is 22; when the index of the first SS / PBCH block structure is 3, the first value B·i is 33.

[0171] 1.3 The first value is C·i

[0172] In some embodiments, the sample index m of the second sequence is determined based on the sum of the following two values: the sample index n of the first PSS sequence, a first numerical value, and a first identifier. The product of the first value C·i and the second preset value C. The first value C·i is determined based on the product of the index i of the first SS / PBCH block structure and the second preset value C, wherein the second preset value C is determined based on protocol predefined information.

[0173] 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 indicates the nth value among the N 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.

[0174] 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):

[0175] 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. As shown in formula (2), C·i is the first value.

[0176] In some embodiments, the influence factor includes a first value C·i. Here, i is the index of the first SS / PBCH block structure, C is a second preset value, and C is an integer greater than 0.

[0177] In some embodiments, the first value (i.e., C·i) is determined based on the product of the index i of the first SS / PBCH block structure and the second preset value C.

[0178] In some embodiments, the index i of the first SS / PBCH block structure is related to the number of candidate SS / PBCH block structure types; that is, the index i of the first SS / PBCH block structure is determined based on the number of candidate SS / PBCH block structure types.

[0179] In some embodiments, when the number of candidate SS / PBCH block structure types includes K types, the index i of the first SS / PBCH block structure is in the range of [1, K], or the index i of the first SS / PBCH block structure is in the range of [0, K-1], where K is an integer greater than 0.

[0180] 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.

[0181] The example is taken with the index i of the first SS / PBCH block structure ranging from [1, K]. Table 6 shows the correspondence between the number of candidate SS / PBCH block structure types and the first value C·i.

[0182] Table 6

[0183] For example, referring to Table 6, when the number of candidate SS / PBCH block structures is one, the index of the first SS / PBCH block structure is 1. In some embodiments, the second preset value C is described as 43, and when the index of the first SS / PBCH block structure is 1, the first value C·i is 43.

[0184] For example, referring to Table 6, when there are two types of candidate SS / PBCH block structures, the index of the first SS / PBCH block structure may be 1 or 2. In some embodiments, assuming the second preset value C is 22, the first value C·i is 22 when the index of the first SS / PBCH block structure is 1, and 44 when the index of the first SS / PBCH block structure is 2. In other embodiments, assuming the second preset value C is 21, the first value C·i is 21 when the index of the first SS / PBCH block structure is 1, and 42 when the index of the first SS / PBCH block structure is 2.

[0185] For example, referring to Table 6, when there are three types of candidate SS / PBCH block structures, the index of the first SS / PBCH block structure may be 1, 2, or 3. In some embodiments, assuming the second preset value C is 14, the first value C·i is 14 when the index of the first SS / PBCH block structure is 1; the first value C·i is 28 when the index of the first SS / PBCH block structure is 2; and the first value C·i is 42 when the index of the first SS / PBCH block structure is 3. In other embodiments, assuming the second preset value C is 13, the first value C·i is 13 when the index of the first SS / PBCH block structure is 1; the first value C·i is 26 when the index of the first SS / PBCH block structure is 2; and the first value C·i is 39 when the index of the first SS / PBCH block structure is 3.

[0186] For example, referring to Table 6, when there are four types of candidate SS / PBCH block structures, the index of the first SS / PBCH block structure may be 1, 2, 3, or 4. In some embodiments, assuming the second preset value C is 11, when the index of the first SS / PBCH block structure is 1, the first value C·i is 11; when the index of the first SS / PBCH block structure is 2, the first value C·i is 22; when the index of the first SS / PBCH block structure is 3, the first value C·i is 33; and when the index of the first SS / PBCH block structure is 4, the first value C·i is 44.

[0187] 1.4 The first value is D

[0188] In some embodiments, the sample index m of the second sequence is determined based on the sum of the following two values: the sample index n of the first PSS sequence, a first numerical value, and a first identifier. The product of . Wherein, the first value D corresponds to the index i of the first SS / PBCH block structure. The first value D is determined based on protocol predefined information.

[0189] 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 indicates the nth value among the N 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.

[0190] 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):

[0191] 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. Determine (as shown in formula (2)) that D is the first value.

[0192] In some embodiments, the influence factor includes a first value D. The first value D corresponds to an index of the SS / PBCH block structure.

[0193] In some embodiments, when the number of candidate SS / PBCH block structure types includes K types, the index i of the first SS / PBCH block structure ranges from [1, K] (or [0, K-1]), and the first value D has K values, each corresponding to one of the K indices of the first SS / PBCH block structure. K is an integer greater than 0.

[0194] The example is taken with the index i of the first SS / PBCH block structure ranging from [1, K]. Table 7 shows the correspondence between the number of candidate SS / PBCH block structure types and the first value D.

[0195] Table 7

[0196] For example, referring to Table 7, when the number of candidate SS / PBCH block structures is one, the first value D is 43.

[0197] For example, referring to Table 7, when there are two types of candidate SS / PBCH block structures, the first value D is 23 and 43. For instance, when the candidate SS / PBCH block structure is the first type, the first value D is 23; when the candidate SS / PBCH block structure is the second type, the first value D is 43. Alternatively, when there are two types of candidate SS / PBCH block structures, the first value D is 19 and 43. For instance, when the candidate SS / PBCH block structure is the first type, the first value D is 19; when the candidate SS / PBCH block structure is the second type, the first value D is 43.

[0198] For example, referring to Table 7, when there are three types of candidate SS / PBCH block structures, the first value D takes the values ​​13, 29, and 43. For instance, when the candidate SS / PBCH block structure is the first type, the first value D is 13; when the candidate SS / PBCH block structure is the second type, the first value D is 29; and when the candidate SS / PBCH block structure is the third type, the first value D is 43. When there are three types of candidate SS / PBCH block structures, the first value D takes the values ​​11, 29, and 43. For instance, when the candidate SS / PBCH block structure is the first type, the first value D is 11; when the candidate SS / PBCH block structure is the second type, the first value D is 29; and when the candidate SS / PBCH block structure is the third type, the first value D is 43.

[0199] For example, referring to Table 7, when there are four types of candidate SS / PBCH block structures, the first value D takes the values ​​11, 19, 31, and 43. For instance, when the candidate SS / PBCH block structure is the first type, the first value D is 11; when the candidate SS / PBCH block structure is the second type, the first value D is 19; when the candidate SS / PBCH block structure is the third type, the first value D is 31; and when the candidate SS / PBCH block structure is the fourth type, the first value D is 43. Alternatively, when there are four types of candidate SS / PBCH block structures, the first value D takes the values ​​11, 23, 31, and 43. For example, when the candidate SS / PBCH block structure is the first type of candidate SS / PBCH block structure, the first value D is 11; when the candidate SS / PBCH block structure is the second type of candidate SS / PBCH block structure, the first value D is 23; when the candidate SS / PBCH block structure is the third type of candidate SS / PBCH block structure, the first value D is 31; and when the candidate SS / PBCH block structure is the fourth type of candidate SS / PBCH block structure, the first value D is 43.

[0200] 2. Cases where the impact factor includes an exponential function.

[0201] In some embodiments, 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.

[0202] 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.

[0203] 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.

[0204] The following sections explain the effect of the exponential function on the second or third sequence, respectively.

[0205] 2.1 The exponential function is the exponential function of the second sequence.

[0206] In some embodiments, the influence factor includes an exponential function e j2πin / K or e j2πim / K The exponential function is the exponential function of the second sequence x(m). Here, j is an imaginary number, i is the index corresponding to the first SS / PBCH block structure, n is the sample index of the first PSS sequence, m is the sample index of the second sequence, and K is the number of candidate SS / PBCH block structure types.

[0207] 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 / K or e j2πim / K The product of the first sequence x(m) and the second sequence x(m).

[0208] Exponential function e j2πin / K or e j2πim / K 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.

[0209] Optionally, the exponential function e j2πin / K 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 / K 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.

[0210] 2.1.1 The exponential function is related to the sample index of the first PSS sequence.

[0211] In some embodiments, the exponential function e j2πin / K The exponential factor j2πin / K is related to the index i corresponding to the first SS / PBCH block structure. Optionally, the exponential function e j2πin / KThe exponential factor j2πin / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index n of the first PSS sequence.

[0212] 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 (7):

[0213] Where, d PSS (n) is the first PSS sequence, x(m) is the second sequence, and e j2πin / K Let be an exponential function, 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. Determine (as shown in formula (2)). Where the index range of n is [0, 126].

[0214] In some embodiments, the exponential function is e j2πin / K j is an imaginary number, i is the index corresponding to the first SS / PBCH block structure, n is the sample index of the first PSS sequence, and K is the number of candidate SS / PBCH block structure types.

[0215] In some embodiments, the index i of the first SS / PBCH block structure is related to the number K of candidate SS / PBCH block structure types; that is, the index i of the first SS / PBCH block structure is determined based on the number K of candidate SS / PBCH block structure types.

[0216] In some embodiments, when the number of candidate SS / PBCH block structures includes K types, the index i of the first SS / PBCH block structure is in the range of [0, K-1], where K is an integer greater than or equal to 0.

[0217] For example, when there is only one type of candidate SS / PBCH block structure, K is 1 and the index i of the first SS / PBCH block structure is 0.

[0218] For example, when there are two types of candidate SS / PBCH block structures, the value of K is 2, and the index range of the first SS / PBCH block structure is [0, 1]. That is, the index i of the first SS / PBCH block structure is 0 and 1.

[0219] For example, when there are three types of candidate SS / PBCH block structures, the value of K is 3, and the index range of the first SS / PBCH block structure is [0, 2]. That is, the index i of the first SS / PBCH block structure is 0, 1, and 2.

[0220] For example, when there are four types of candidate SS / PBCH block structures, the value of K is 4, and the index range of the first SS / PBCH block structure is [0, 3]. That is, the index i of the first SS / PBCH block structure is 0, 1, 2 and 3.

[0221] 2.1.2 Correlation between the exponential function and the sample index of the second sequence

[0222] In some embodiments, the exponential function e j2πim / K The exponential factor j2πim / K is related to the index corresponding to the first SS / PBCH block structure. Optionally, the exponential function e j2πim / K The exponential factor j2πim / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index m of the second sequence.

[0223] 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 (8):

[0224] Where, d PSS (n) is the first PSS sequence, x(m) is the second sequence, and e j2πim / K Let be an exponential function, 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. Determine (as shown in formula (2)). Where the index range of n is [0, 126].

[0225] In some embodiments, the exponential function is e j2πim / K j 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.

[0226] In some embodiments, the index i of the first SS / PBCH block structure is related to the number K of candidate SS / PBCH block structure types; that is, the index i of the first SS / PBCH block structure is determined based on the number K of candidate SS / PBCH block structure types.

[0227] In some embodiments, when the number of candidate SS / PBCH block structures includes K types, the index i of the first SS / PBCH block structure is in the range of [0, K-1], where K is an integer greater than or equal to 0.

[0228] 2.2 Exponential functions for third sequences

[0229] In some embodiments, the influence factor includes an exponential function e j2πin / Kor e j2πim / K The exponential function is the exponential function of the third sequence 1-2x(m). The third sequence 1-2x(m) is the sequence obtained by performing operations on the second sequence x(m), and can also be called the basic PSS sequence.

[0230] In some embodiments, the first PSS sequence is formed by the third sequence 1-2x(m) and the exponential function e. j2πin / K or e j2πim / K The 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.

[0231] Exponential function e j2πin / K or e j2πim / K 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.

[0232] Optionally, the exponential function e j2πin / K The exponential factor j2πin / K 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 / K The exponential factor j2πim / K is related to the index i of the first SS / PBCH block structure and the sample index m of the second sequence.

[0233] 2.2.1 The exponential function is related to the sample index of the first PSS sequence.

[0234] In some embodiments, the exponential function e j2πin / K The exponential factor j2πin / K is related to the index i corresponding to the first SS / PBCH block structure. Optionally, the exponential function e j2πin / K The exponential factor j2πin / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index n of the first PSS sequence.

[0235] 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 (9):

[0236] Where, d PSS (n) is the first PSS sequence, 1-2x(m) is the third sequence, and e j2πin / K Let be an exponential function, 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. Determine (as shown in formula (2)). Where the index range of n is [0, 126].

[0237] In some embodiments, the exponential function is e j2πin / K j is an imaginary number, i is the index corresponding to the first SS / PBCH block structure, n is the sample index of the first PSS sequence, and K is the number of candidate SS / PBCH block structure types.

[0238] In some embodiments, when the number of candidate SS / PBCH block structures includes K types, the index i of the first SS / PBCH block structure is in the range of [0, K-1], where K is an integer greater than or equal to 0.

[0239] For example, when there is only one type of candidate SS / PBCH block structure, K is 1 and the index i of the first SS / PBCH block structure is 0.

[0240] For example, when there are two types of candidate SS / PBCH block structures, the value of K is 2, and the index range of the first SS / PBCH block structure is [0, 1]. That is, the index i of the first SS / PBCH block structure is 0 and 1.

[0241] For example, when there are three types of candidate SS / PBCH block structures, the value of K is 3, and the index range of the first SS / PBCH block structure is [0, 2]. That is, the index i of the first SS / PBCH block structure is 0, 1, and 2.

[0242] For example, when there are four types of candidate SS / PBCH block structures, the value of K is 4, and the index range of the first SS / PBCH block structure is [0, 3]. That is, the index i of the first SS / PBCH block structure is 0, 1, 2 and 3.

[0243] 2.2.2 Correlation between the exponential function and the sample index of the second sequence

[0244] In some embodiments, the exponential function e j2πim / K The exponential factor j2πim / K is related to the index i corresponding to the first SS / PBCH block structure. Optionally, the exponential function e j2πim / K The exponential factor j2πim / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index m of the second sequence.

[0245] 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 (10):

[0246] Where, dPSS (n) is the first PSS sequence, x(m) is the second sequence, and e j2πim / K Let be an exponential function, 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. Determine (as shown in formula (2)). Where the index range of n is [0, 126].

[0247] In some embodiments, the exponential function is e j2πim / K j 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.

[0248] In some embodiments, the index i of the first SS / PBCH block structure is related to the number K of candidate SS / PBCH block structure types; that is, the index i of the first SS / PBCH block structure is determined based on the number K of candidate SS / PBCH block structure types.

[0249] In some embodiments, when the number of candidate SS / PBCH block structures includes K types, the index of the first SS / PBCH block structure ranges from [0, K-1], where K is an integer greater than or equal to 0.

[0250] 3. Cases where the impact factor includes both the initial numerical value and the exponential function.

[0251] In some embodiments, the influencing factor includes a first numerical value and an exponential function. The first PSS sequence is related to the value of the first numerical value and the exponential factor of the exponential function.

[0252] In some embodiments, the first numerical value is used to influence the sample index of the second sequence. Optionally, the method for determining the sample index of the second sequence includes at least one of the following:

[0253] • The sum of the sample point index of the first PSS sequence, the product of the first coefficient and the first identifier, and the first value is determined, and the first value is equal to the value corresponding to the first SS / PBCH block structure;

[0254] • The sum of the first value is determined based on the sample index of the first PSS sequence, the product of the first coefficient and the first identifier, and the product of the first value based on the index of the first SS / PBCH block structure and the first preset value.

[0255] • The sum of the product of the first value and the first identifier is determined based on the sample point index 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 second preset value.

[0256] The first and second preset values ​​mentioned above are determined based on the predefined information of the protocol.

[0257] In some embodiments, the exponential function is an exponential function that acts directly on the second sequence, and the first PSS sequence is determined based on a constant 1 and the product of the exponential function and the second sequence. Alternatively, the exponential function is an exponential function that acts directly on the third sequence, and the first PSS sequence is determined based on a constant 1 and the difference between the product of the exponential function and the second sequence.

[0258] In some embodiments, the influencing factor includes a first numerical value and an exponential function. Optionally, the first numerical value A is equal to the numerical value corresponding to the first SS / PBCH block structure, and the exponential function is an exponential function acting on the second sequence x(m); or, the first numerical value B·i is equal to the product of the index of the first SS / PBCH block structure and a first preset value, and the exponential function is an exponential function acting on the second sequence x(m); the first numerical value C·i is equal to the product of the index of the first SS / PBCH block structure and a second preset value, and the exponential function is an exponential function acting on the second sequence x(m); or, the first numerical value D has a corresponding relationship with the index of the first SS / PBCH block structure, and the exponential function is an exponential function acting on the second sequence x(m).

[0259] In some embodiments, the influencing factor includes a first numerical value and an exponential function. Optionally, the first numerical value A is equal to the numerical value corresponding to the first SS / PBCH block structure, and the exponential function is an exponential function acting on the third sequence 1-2x(m); or, the first numerical value B·i is equal to the product of the index of the first SS / PBCH block structure and a first preset value, and the exponential function is an exponential function acting on the third sequence 1-2x(m); the first numerical value C·i is equal to the product of the index of the first SS / PBCH block structure and a second preset value, and the exponential function is an exponential function acting on the third sequence 1-2x(m); or, the first numerical value D has a corresponding relationship with the index of the first SS / PBCH block structure, and the exponential function is an exponential function acting on the third sequence 1-2x(m).

[0260] Combination Method 1: The first value A is equal to the value corresponding to the first SS / PBCH block structure, and the exponential function is the exponential function acting on the second sequence x(m).

[0261] In some embodiments, the first PSS sequence is generated based on an impact factor, which includes a first numerical value A and an exponential function e. j2πin / K or e j2πim / K The first value A is equal to the value corresponding to the first SS / PBCH block structure, and the exponential function e j2πin / K or e j2πim / K It is an exponential function acting on the second sequence x(m).

[0262] 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 / K or e j2πim / K The product of the first PSS sequence and the second sequence x(m). The sample index m of the second sequence x(m) is determined based on the sum of the following three factors: the sample index n of the first PSS sequence, the first coefficient, and the first identifier. The product of the first value A. The first coefficient is determined based on predefined protocol information. The first value A is also determined based on predefined protocol information. The first value A is equal to the value corresponding to the first SS / PBCH block structure. The first identifier. Based on physical cell identifier Determine (as shown in formula (2)).

[0263] In some embodiments, the exponential function e j2πin / K The exponential factor j2πin / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index n of the first PSS sequence. Optionally, the first PSS sequence is determined based on formula (11):

[0264] Where, d PSS (n) is the first PSS sequence, x(m) is the second sequence, and e j2πin / K Let be an exponential function, m be the sample index of the second sequence, n be the sample index of the first PSS sequence, and 43 be the first coefficient. First identifier, first identifier Based on physical cell identifier As shown in formula (2), A is the first value. The index range of n is [0, 126].

[0265] In some embodiments, the exponential function e j2πim / K The exponential factor j2πim / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index m of the second sequence. Optionally, the first PSS sequence is determined based on formula (12):

[0266] Where, d PSS (n) is the first PSS sequence, x(m) is the second sequence, and e j2πim / K Let be an exponential function, m be the sample index of the second sequence, n be the sample index of the first PSS sequence, and 43 be the first coefficient. First identifier, first identifier Based on physical cell identifier As shown in formula (2), A is the first value. The index range of n is [0, 126].

[0267] Combination Method Two: The first value B·i is equal to the product of the index i of the first SS / PBCH block structure and the first preset value B, and the exponential function is the exponential function acting on the second sequence x(m).

[0268] In some embodiments, the first PSS sequence is generated based on an impact factor, which includes a first numerical value B·i and an exponential function e. j2πin / K or e j2πim / K The first value B·i is determined based on the product of the index i of the first SS / PBCH block structure and the first preset value B, and the exponential function e j2πin / K or e j2πim / K It is an exponential function acting on the second sequence x(m).

[0269] 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 / K or e j2πim / K The product of the first PSS sequence and the second sequence x(m). The sample index m of the second sequence x(m) is determined based on the sum of the following three factors: the sample index n of the first PSS sequence, the first coefficient, and the first identifier. The product of the first value B·i. The first coefficient is determined based on protocol predefined information, the first preset value B is determined based on protocol predefined information, the first value B·i is determined based on the product of the index i of the first SS / PBCH block structure and the first preset value B, and the first identifier. Based on physical cell identifier Determine (as shown in formula (2)).

[0270] In some embodiments, the exponential function e j2πin / K The exponential factor j2πin / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index n of the first PSS sequence. Optionally, the first PSS sequence is determined based on formula (13):

[0271] Where, d PSS (n) is the first PSS sequence, x(m) is the second sequence, and e j2πin / K Let be an exponential function, m be the sample index of the second sequence, n be the sample index of the first PSS sequence, and 43 be the first coefficient. Let n be the first identifier, B·i be the first value, i be the index of an SS / PBCH block structure, and B be the first preset value. The index range of n is [0, 126].

[0272] In some embodiments, the exponential function e j2πim / KThe exponential factor j2πim / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index m of the second sequence. Optionally, the first PSS sequence is determined based on formula (14):

[0273] Where, d PSS (n) is the first PSS sequence, x(m) is the second sequence, and e j2πim / K Let be an exponential function, m be the sample index of the second sequence, n be the sample index of the first PSS sequence, and 43 be the first coefficient. Let n be the first identifier, B·i be the first value, i be the index of an SS / PBCH block structure, and B be the first preset value. The index range of n is [0, 126].

[0274] Combination Method 3: The first value C·i is equal to the product of the index i of the first SS / PBCH block structure and the second preset value C, and the exponential function is the exponential function acting on the second sequence x(m).

[0275] In some embodiments, the first PSS sequence is generated based on an impact factor, which includes a first numerical value C·i and an exponential function e. j2πin / K or e j2πim / K The first value C·i is determined by the product of the index i of the first SS / PBCH block structure and the second preset value C, and the exponential function e j2πin / K or e j2πim / K It is an exponential function acting on the second sequence x(m).

[0276] 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 / K or e j2πim / K The product of the first PSS sequence and the second sequence x(m). The sample index m of the second sequence x(m) is determined based on the sum of the following two factors: the sample index n of the first PSS sequence, the first numerical value C·i, and the first identifier. The product of the first value C·i and the second preset value C. The first identifier is determined by the product of the index i of the first SS / PBCH block structure and the second preset value C. Based on physical cell identifier Determine (as shown in formula (2)). The second preset value C is determined based on the protocol predefined information.

[0277] In some embodiments, the exponential function e j2πin / K The exponential factor j2πin / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index n of the first PSS sequence. Optionally, the first PSS sequence is determined based on formula (15):

[0278] Where, d PSS (n) is the first PSS sequence, x(m) is the second sequence, and e j2πin / K Let m be the sample index of the second sequence and n be the sample index of the first PSS sequence. C is the first identifier, C·i is the first value, i is the index of an SS / PBCH block structure, and C is the second preset value. The index range of n is [0, 126].

[0279] In some embodiments, the exponential function e j2πim / K The exponential factor j2πim / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index m of the second sequence. Optionally, the first PSS sequence is determined based on formula (16):

[0280] Where, d PSS (n) is the first PSS sequence, x(m) is the second sequence, and e j2πim / K Let m be the sample index of the second sequence and n be the sample index of the first PSS sequence. C is the first identifier, C·i is the first value, i is the index of an SS / PBCH block structure, and C is the second preset value. The index range of n is [0, 126].

[0281] Combination Method 4: The first numerical value D corresponds to the index of the first SS / PBCH block structure, and the exponential function is the exponential function acting on the second sequence x(m).

[0282] In some embodiments, the first PSS sequence is generated based on an impact factor, which includes a first numerical value D and an exponential function e. j2πin / K or e j2πim / K The first numerical value D corresponds to the index of the first SS / PBCH block structure, and the exponential function e j2πin / K or e j2πim / K It is an exponential function acting on the second sequence x(m).

[0283] 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 / K or e j2πim / K The product of the first PSS sequence and the second sequence x(m). The sample index m of the second sequence x(m) is determined based on the sum of the following two factors: the sample index n of the first PSS sequence, the first numerical value D, and the first identifier. The product of the first value D and the index i of the first SS / PBCH block structure. The first value D is determined based on protocol predefined information. First identifier Based on physical cell identifier Determine (as shown in formula (2)).

[0284] In some embodiments, the exponential function e j2πin / K The exponential factor j2πin / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index n of the first PSS sequence. Optionally, the first PSS sequence is determined based on formula (17):

[0285] Where, d PSS (n) is the first PSS sequence, x(m) is the second sequence, and e j2πun / K Let m be the sample index of the second sequence and n be the sample index of the first PSS sequence. Let D be the first identifier and D be the first numerical value. The index range of n is [0, 126].

[0286] In some embodiments, the exponential function e j2πim / K The exponential factor j2πim / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index m of the second sequence. Optionally, the first PSS sequence is determined based on formula (18):

[0287] Where, d PSS (n) is the first PSS sequence, x(m) is the second sequence, and e j2πim / K Let m be the sample index of the second sequence and n be the sample index of the first PSS sequence. Let D be the first identifier and D be the first numerical value. The index range of n is [0, 126].

[0288] Combination Method 5: The first value A is equal to the value corresponding to the first SS / PBCH block structure, and the exponential function is the exponential function acting on the third sequence 1-2x(m).

[0289] In some embodiments, the first PSS sequence is generated based on an impact factor, which includes a first numerical value A and an exponential function e. j2πin / K or e j2πim / K The first value A is equal to the value corresponding to the first SS / PBCH block structure, and the exponential function e j2πin / K or e j2πim / K It is an exponential function that acts on the third sequence.

[0290] In some embodiments, the first PSS sequence is formed by the third sequence 1-2x(m) and the exponential function e. j2πin / K or e j2πim / KThe product of the first sequence x(m) and the second sequence x(m) 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 sample index m of the second sequence x(m) is determined based on the sum of the following three: the sample index n of the first PSS sequence, the first coefficient, and the first identifier. The product of the first and second coefficients is A. The first value A is equal to the value corresponding to the first SS / PBCH block structure. The first value A is determined based on predefined protocol information. First identifier. Based on physical cell identifier Determine (as shown in formula (2)).

[0291] In some embodiments, the exponential function e j2πin / K The exponential factor j2πin / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index n of the first PSS sequence. Optionally, the first PSS sequence is determined based on formula (19):

[0292] Where, d PSS (n) is the first PSS sequence, 1-2x(m) is the third sequence, and e j2πin / K Let be an exponential function, m be the sample index of the second sequence, n be the sample index of the first PSS sequence, and 43 be the first coefficient. Let A be the first identifier and A be the first numerical value. The index range of n is [0, 126].

[0293] In some embodiments, the exponential function e j2πim / K The exponential factor j2πim / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index m of the second sequence. Optionally, the first PSS sequence is determined based on formula (20):

[0294] Where, d PSS (n) is the first PSS sequence, 1-2x(m) is the third sequence, and e j2πim / K Let be an exponential function, m be the sample index of the second sequence, n be the sample index of the first PSS sequence, and 43 be the first coefficient. Let A be the first identifier and A be the first numerical value. The index range of n is [0, 126].

[0295] Combination Method Six: The first value B·i is equal to the product of the index i of the first SS / PBCH block structure and the first preset value B. The exponential function is the exponential function acting on the third sequence 1-2x(m).

[0296] In some embodiments, the first PSS sequence is generated based on an impact factor, which includes a first numerical value B·i and an exponential function e. j2πin / K or e j2πim / K The first value B·i is equal to the value corresponding to the first SS / PBCH block structure, and the exponential function e j2πin / K or e j2πim / K It is an exponential function acting on the third sequence 1-2x(m).

[0297] In some embodiments, the first PSS sequence is formed by the third sequence 1-2x(m) and the exponential function e. j2πin / K or e j2πim / K The product of the first sequence x(m) and the second sequence x(m) 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 sample index m of the second sequence x(m) is determined based on the sum of the following three: the sample index n of the first PSS sequence, the first coefficient, and the first identifier. The product of the first value B·i and the second value B·i is determined based on predefined protocol information. The first coefficient is determined based on predefined protocol information, and the second coefficient is also determined based on predefined protocol information. The first value B·i is determined based on the product of the index i of the first SS / PBCH block structure and the first preset value B. The first preset value B is determined based on predefined protocol information. First identifier. Based on physical cell identifier Determine (as shown in formula (2)).

[0298] In some embodiments, the exponential function e j2πin / K The exponential factor j2πin / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index n of the first PSS sequence. Optionally, the first PSS sequence is determined based on formula (21):

[0299] Where, d PSS (n) is the first PSS sequence, 1-2x(m) is the third sequence, and e j2πin / K Let be an exponential function, m be the sample index of the second sequence, n be the sample index of the first PSS sequence, and 43 be the first coefficient. Let n be the first identifier, B·i be the first value, i be the index of an SS / PBCH block structure, and B be the first preset value. The index range of n is [0, 126].

[0300] In some embodiments, the exponential function e j2πim / K The exponential factor j2πim / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index m of the second sequence. Optionally, the first PSS sequence is determined based on formula (22):

[0301] Where, d PSS (n) is the first PSS sequence, 1-2x(m) is the third sequence, and e j2πim / K Let be an exponential function, m be the sample index of the second sequence, n be the sample index of the first PSS sequence, and 43 be the first coefficient. Let n be the first identifier, B·i be the first value, i be the index of an SS / PBCH block structure, and B be the first preset value. The index range of n is [0, 126].

[0302] Combination Method Seven: The first value C·i is equal to the product of the index i of the first SS / PBCH block structure and the second preset value C. The exponential function is the exponential function acting on the third sequence 1-2x(m).

[0303] In some embodiments, the first PSS sequence is generated based on an impact factor, which includes a first numerical value C·i and an exponential function e. j2πin / K or e j2πim / K The first value C·i is equal to the value corresponding to the first SS / PBCH block structure, and the exponential function e j2πin / K or e j2πim / K It is an exponential function acting on the third sequence 1-2x(m).

[0304] In some embodiments, the first PSS sequence is formed by the third sequence 1-2x(m) and the exponential function e. j2πin / K or e j2πim / K The product of the first sequence x(m) and the second sequence x(m) is generated. The third sequence 1-2x(m) is determined based on the difference between the following two factors: a constant 1 and the product of the second coefficient and the second sequence x(m). The sample index m of the second sequence x(m) is determined based on the sum of the following two factors: the sample index n of the first PSS sequence, the first value C·i, and the first identifier. The product of the first value C·i and the second preset value C. The second preset value C is determined based on the protocol predefined information. Based on physical cell identifier Determine (as shown in formula (2)).

[0305] In some embodiments, the exponential function e j2πin / K The exponential factor j2πin / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index n of the first PSS sequence. Optionally, the first PSS sequence is determined based on formula (23):

[0306] Where, d PSS (n) is the first PSS sequence, 1-2x(m) is the third sequence, and ej2πin / K Let m be the sample index of the second sequence and n be the sample index of the first PSS sequence. C is the first identifier, C·i is the first value, i is the index of an SS / PBCH block structure, and C is the second preset value. The index range of n is [0, 126].

[0307] In some embodiments, the exponential function e j2πim / K The exponential factor j2πim / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index m of the second sequence. Optionally, the first PSS sequence is determined based on formula (24):

[0308] Where, d PSS (n) is the first PSS sequence, 1-2x(m) is the third sequence, and e j2πim / K Let m be the sample index of the second sequence and n be the sample index of the first PSS sequence. C is the first identifier, C·i is the first value, i is the index of an SS / PBCH block structure, and C is the second preset value. The index range of n is [0, 126].

[0309] Combination Method 8: The first value D corresponds to the index i of the first SS / PBCH block structure, and the exponential function is the exponential function acting on the third sequence 1-2x(m).

[0310] In some embodiments, the first PSS sequence is generated based on an impact factor, which includes a first numerical value D and an exponential function e. j2πin / K or e j2πim / K The first numerical value D corresponds to the index of the first SS / PBCH block structure, and the exponential function e j2πin / K or e j2πim / K It is an exponential function acting on the third sequence 1-2x(m).

[0311] In some embodiments, the first PSS sequence is formed by the third sequence 1-2x(m) and the exponential function e. j2πin / K or e j2πim / K The product of the first sequence x(m) and the second sequence x(m) is generated. The third sequence 1-2x(m) is determined based on the difference between the following two factors: a constant 1 and the product of the second coefficient and the second sequence x(m). The sample index m of the second sequence x(m) is determined based on the sum of the following two factors: the sample index n of the first PSS sequence, the first value D, and the first identifier. The product of the first and second coefficients. The second coefficient is determined based on predefined protocol information, and the first value D corresponds to the index of the first SS / PBCH block structure. The first value D is determined based on predefined protocol information. First identifier. Based on physical cell identifier Determine (as shown in formula (2)).

[0312] In some embodiments, the exponential function e j2πin / K The exponential factor j2πin / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index n of the first PSS sequence. Optionally, the first PSS sequence is determined based on formula (25):

[0313] Where, d PSS (n) is the first PSS sequence, 1-2x(m) is the third sequence, and e j2πin / K Let m be the sample index of the second sequence and n be the sample index of the first PSS sequence. Let D be the first identifier and D be the first numerical value. The index range of n is [0, 126].

[0314] In some embodiments, the exponential function e j2πim / K The exponential factor j2πim / K is related to the product of the index i corresponding to the first SS / PBCH block structure and the sample index m of the second sequence. Optionally, the first PSS sequence is determined based on formula (26):

[0315] Where, d PSS (n) is the first PSS sequence, 1-2x(m) is the third sequence, and e j2πim / K Let m be the sample index of the second sequence and n be the sample index of the first PSS sequence. Let D be the first identifier and D be the first numerical value. The index range of n is [0, 126].

[0316] In this embodiment, different SS / PBCH block structures correspond to different PSS sequences, which allows the terminal device to determine the corresponding SS / PBCH block structure based on PSS detection. This avoids detecting SSS on SSS symbols in multiple candidate SS / PBCH block structures, saving power consumption and reducing detection latency.

[0317] Figure 8 shows a structural block diagram of an information determining device provided in an exemplary embodiment of this application. This information determining 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 1310 and a determining module 1320.

[0318] Receiver module 1310 is used to receive the first PSS sequence;

[0319] 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.

[0320] The SS / PBCH block structure includes a synchronization signal and a PBCH. The synchronization signal is used at least to achieve downlink synchronization. Optionally, the synchronization signal includes a PSS and an SSS. The PBCH is used to carry the MIB, and all or part of the PRB used to map the PBCH is also used to map a reference signal (such as the PBCH DMRS), which is used by the terminal equipment to detect the PBCH.

[0321] In some embodiments, the network device generates different PSS sequences for different SS / PBCH block structures. This can also be understood as different PSS sequences corresponding to different SS / PBCH block structures. The receiving module 1310 receives the PSS sequence sent by the network device and determines the SS / PBCH block structure corresponding to the PSS sequence.

[0322] The determination module 1320 is used to determine the first SS / PBCH block structure corresponding to the first PSS sequence, wherein the first SS / PBCH block structure is one of at least two candidate SS / PBCH block structures.

[0323] Optionally, the determining module 1320 receives a first PSS sequence sent by the network device and determines a corresponding first SS / PBCH block structure based on the first PSS sequence. The first SS / PBCH block structure is one of at least two candidate SS / PBCH block structures.

[0324] In some embodiments, the determination module 1320 supports one SS / PBCH block structure. In other embodiments, the determination module 1320 supports at least two SS / PBCH block structures, the at least two SS / PBCH block structures corresponding to different PSS sequences.

[0325] In some embodiments, the at least two SS / PBCH block structures may also be referred to as at least two candidate SS / PBCH block structures. Optionally, for each candidate SS / PBCH block structure among the at least two candidate SS / PBCH block structures, the determining module 1320 calculates the candidate PSS sequence corresponding to each candidate SS / PBCH block structure.

[0326] After receiving the first PSS sequence, the determination module 1320 performs correlation detection on the first PSS sequence and the candidate PSS sequences to identify which type of candidate PSS sequence the first PSS sequence belongs to. That is, based on the candidate PSS sequence with the highest correlation peak with the first PSS sequence, the SS / PBCH block structure type or the index corresponding to the SS / PBCH block structure corresponding to the first PSS sequence is identified.

[0327] In some embodiments, the first PSS sequence is generated based on an impact factor. The impact factor is related to the first SS / PBCH block structure, specifically, it is related to the index corresponding to the first SS / PBCH block structure. Different first PSS sequences can be generated by changing the value of the impact factor.

[0328] In some embodiments, the index corresponding to the SS / PBCH block structure is used to identify different SS / PBCH block structures. Optionally, the index corresponding to the first SS / PBCH block structure is an index used to identify the first SS / PBCH block structure.

[0329] For details regarding the first PSS sequence and the impact factor, please refer to the relevant section above, "Next, based on the embodiments shown in Figures 6 and 7, we will further introduce the first PSS sequence and the impact factor that generated the first PSS sequence." It will not be repeated here.

[0330] In summary, the method provided in this application addresses the issue that different SS / PBCH block structures correspond to different PSS sequences. The information determination device detects the received PSS sequence to determine the SS / PBCH block structure corresponding to the PSS sequence from at least two candidate SS / PBCH block structures supported by the system. Compared to related technologies where the information determination device detects at least two candidate SS / PBCH block structures separately, this method, which determines the SS / PBCH block structure based on PSS sequence detection, reduces the power consumption of the information determination device and lowers the detection latency.

[0331] Figure 9 shows a structural block diagram of an information determining device provided in an exemplary embodiment of this application. This information determining 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 transmitting module 1410.

[0332] The transmitting module 1410 is used to transmit a first PSS sequence, which corresponds to a first SS / PBCH block structure, and the first SS / PBCH block structure is one of at least two candidate SS / PBCH block structures.

[0333] In some embodiments, the sending module 1410 determines the synchronization signal block structure to be sent to the terminal device, generates a PSS sequence based on the synchronization signal block structure, and sends the PSS sequence to the terminal device.

[0334] The synchronization signal block structure can be simply referred to as the SS / PBCH block structure. The SS / PBCH block structure includes a synchronization signal and a PBCH. The synchronization signal is used at least to achieve downlink synchronization. Optionally, the synchronization signal includes a PSS and an SSS. The PBCH is used to carry the MIB, and all or part of the PRB used to map the PBCH is also used to map a reference signal (such as the PBCH DMRS), which is used by the terminal equipment to detect the PBCH.

[0335] In some embodiments, the transmitting module 1410 generates different synchronization signals for different synchronization signal block structures. This can also be understood as different PSS sequences corresponding to different SS / PBCH block structures. The transmitting module 1410 then transmits the PSS sequences to the terminal device.

[0336] Optionally, the sending module 1410 sends a first PSS sequence to the terminal device, and the terminal device determines the corresponding first SS / PBCH block structure based on the first PSS sequence. The first SS / PBCH block structure is one of at least two candidate SS / PBCH block structures.

[0337] In some embodiments, the terminal device supports one SS / PBCH block structure. In other embodiments, the terminal device supports at least two SS / PBCH block structures.

[0338] In some embodiments, the at least two SS / PBCH block structures may also be referred to as at least two candidate SS / PBCH block structures. Optionally, for each candidate SS / PBCH block structure among 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.

[0339] In some embodiments, the first PSS sequence is generated based on an impact factor. The impact factor is related to the first SS / PBCH block structure, specifically, it is related to the index corresponding to the first SS / PBCH block structure. Different first PSS sequences can be generated by changing the value of the impact factor.

[0340] In some embodiments, the index corresponding to the SS / PBCH block structure is used to identify different SS / PBCH block structures. Optionally, the index corresponding to the first SS / PBCH block structure is an index used to identify the first SS / PBCH block structure.

[0341] For details regarding the first PSS sequence and the impact factor, please refer to the relevant section above, "Next, based on the embodiments shown in Figures 6 and 7, we will further introduce the first PSS sequence and the impact factor that generated the first PSS sequence." It will not be repeated here.

[0342] In summary, the method provided in this application addresses the issue that different SS / PBCH block structures correspond to different PSS sequences. The terminal device performs detection on the received PSS sequence to determine the SS / PBCH block structure corresponding to the PSS sequence from at least two candidate SS / PBCH block structures supported by the system. Compared to related technologies where the terminal device detects at least two candidate SS / PBCH block structures separately, this method, which determines the SS / PBCH block structure based on PSS sequence detection, reduces the power consumption of the terminal device and lowers the detection latency.

[0343] Figure 10 shows a schematic diagram of the structure of a terminal device provided in an exemplary embodiment of this application. The terminal device 1500 can be used to execute the method steps performed by the terminal device in the above embodiments. The terminal device 1500 may include: a processor 1501, a transceiver 1502, and a memory 1503. The processor 1501 can be used to control transmission and / or reception, such as to implement the functions of the receiving module 1310 described above.

[0344] The processor 1501 includes one or more processing cores, and the processor 1501 executes various functional applications and information processing by running software programs and modules.

[0345] The transceiver 1502 may include a receiver and a transmitter, for example, the receiver and transmitter may be implemented as the same wireless communication component, which may include a wireless communication chip and a radio frequency antenna.

[0346] The memory 1503 can be connected to the processor 1501 and the transceiver 1502.

[0347] The memory 1503 can be used to store a computer program executed by the processor, and the processor 1501 is used to execute the computer program to implement the various steps in the above method embodiments.

[0348] Furthermore, the memory 1503 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, erasable programmable read-only memory, static on-demand memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0349] For details not described in this embodiment, please refer to the method-side embodiment above, which will not be repeated here.

[0350] Figure 11 shows a schematic diagram of a network device provided in an exemplary embodiment of this application. The network device 1600 can be used to execute the method steps performed by the network device in the above embodiments. The network device 1600 may include a processor 1601, a transceiver 1602, and a memory 1603. The processor 1601 can be used to control transmission and / or reception. The transceiver 1602 can be used to implement transmission and / or reception functions, such as implementing the functions of the transmission module 1410 described above.

[0351] The processor 1601 includes one or more processing cores, and the processor 1601 executes various functional applications and information processing by running software programs and modules.

[0352] Transceiver 1602 may include a receiver and a transmitter. For example, transceiver 1602 may include a wired communication component, which may include a wired communication chip and a wired interface (such as a fiber optic interface). Optionally, transceiver 1602 may also include a wireless communication component, which may include a wireless communication chip and a radio frequency antenna.

[0353] The memory 1603 can be connected to the processor 1601 and the transceiver 1602.

[0354] The memory 1603 can be used to store a computer program executed by the processor, and the processor 1601 is used to execute the computer program to implement the various steps in the above method embodiments.

[0355] Furthermore, the memory 1603 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, erasable programmable read-only memory, static on-demand memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0356] For details not described in this embodiment, please refer to the method-side embodiment above, which will not be repeated here.

[0357] This application also provides a computer-readable storage medium storing a computer program for execution by a processor to implement the communication method on the network device side or the communication method on the terminal device side. In some embodiments, the computer-readable storage medium may include ROM (Read-Only Memory), RAM (Random-Access Memory), SSD (Solid State Drives), or optical disc, etc. The random access memory may include ReRAM (Resistance Random Access Memory) and DRAM (Dynamic Random Access Memory).

[0358] This application also provides a chip, which includes programmable logic circuits and / or program instructions. When the chip is running, it is used to implement the above-mentioned information determination method on the terminal device side or the information determination method on the network device side.

[0359] This application also provides a computer program product, which includes a computer program stored in a computer-readable storage medium. The processor reads and executes the computer program from the computer-readable storage medium to implement the above-described information determination method on the terminal device side or the information determination method on the network device side.

[0360] 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 a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0361] In the description of the embodiments of this application, the term "correspondence" may indicate that there is a direct or indirect correspondence between two things, or that there is an association between two things, or that there is a relationship of instruction and being instructed, configuration and being configured, etc.

[0362] In some embodiments of this application, "predefined" can be achieved 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.

[0363] In some embodiments of this application, "protocol" may refer to standard protocols in the field of communications, such as LTE protocol, NR protocol and related protocols applied to future communication systems, and this application does not limit it.

[0364] 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.

[0365] In this article, "greater than or equal to" can mean greater than or equal to, and "less than or equal to" can mean less than or equal to.

[0366] Furthermore, the step numbers described herein are merely illustrative of one possible execution order between steps. In some other embodiments, the steps may not be executed in the order of their numbers, such as two steps with different numbers being executed simultaneously, or two steps with different numbers being executed in the reverse order of the illustration. This application does not limit this.

[0367] Those skilled in the art will recognize that the functions described in the embodiments of this application in one or more of the above examples can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transfer of a computer program from one place to another. Storage media can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0368] The above are merely exemplary embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

1. A method for determining information, characterized in that, The method is executed by a terminal device, and the method includes: Receive the first master synchronization signal (PSS) sequence; Determine the first SS / PBCH block structure corresponding to the first PSS sequence, wherein the first SS / PBCH block structure is one of at least two candidate SS / PBCH block structures.

2. The method according to claim 1, characterized in that, The first PSS sequence is generated based on an impact factor, which is related to the index corresponding to the first SS / PBCH block structure.

3. The method according to claim 2, characterized in that, The impact factor may include a first numerical value, or the impact factor may include an exponential function.

4. The method according to claim 3, characterized in that, When the influence factor includes 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.

5. The method according to claim 4, 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, and the first identifier is determined based on the physical cell identifier.

6. The method according to claim 5, characterized in that, When there are two types of candidate SS / PBCH block structures, the first value corresponding to the two candidate SS / PBCH block structures is 0 and 22 respectively, or the first value corresponding to the two candidate SS / PBCH block structures is 0 and 21. When there are three types of candidate SS / PBCH block structures, the first value corresponding to the three candidate SS / PBCH block structures is 0, 14 and 28; or, the first value corresponding to the three candidate SS / PBCH block structures is 0, 13 and 26. When there are four types of candidate SS / PBCH block structures, the first value corresponding to the four candidate SS / PBCH block structures is 0, 11, 22 and 33.

7. The method according to claim 4, 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, 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, When there are two types of candidate SS / PBCH block structures, the first preset value is 22 or 21. When the number of candidate SS / PBCH block structures is three, the first preset value is 13 or 14. When the number of candidate SS / PBCH block structure types is four, the first preset value is 11.

9. The method according to claim 4, 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.

10. The method according to claim 9, characterized in that, When there are two types of candidate SS / PBCH block structures, the second preset value is 22 or 21. When the number of candidate SS / PBCH block structure types is three, the second preset value is 13 or 14. When the number of candidate SS / PBCH block structure types is four, the second preset value is 11.

11. The method according to claim 4, 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 corresponds to the index of the first SS / PBCH block structure, and the first identifier is determined based on the physical cell identifier.

12. The method according to claim 11, characterized in that, When there are two types of candidate SS / PBCH block structures, the first value corresponding to the two candidate SS / PBCH block structures is 23 and 43 respectively, or the first value corresponding to the two candidate SS / PBCH block structures is 19 and 43. When there are three types of candidate SS / PBCH block structures, the first value corresponding to the three candidate SS / PBCH block structures is 13, 29 and 43; or, the first value corresponding to the three candidate SS / PBCH block structures is 11, 29 and 43. When there are four types of candidate SS / PBCH block structures, the first value corresponding to the four candidate SS / PBCH block structures is 11, 19, 31 and 43; or, the first value corresponding to the three candidate SS / PBCH block structures is 11, 23, 31 and 43.

13. The method according to claim 3, characterized in that, When the influencing factor includes the 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.

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

15. The method according to claim 13, characterized in that, The exponential function is e j2πim / K j 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.

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. An information determination method, characterized in that, The method is performed by a network device, and the method includes: A first master synchronization signal (PSS) sequence is sent, the first PSS sequence corresponding to a first SS / PBCH block structure, the first SS / PBCH block structure being one of at least two candidate SS / PBCH block structures.

19. The method according to claim 18, characterized in that, The first PSS sequence is generated based on an impact factor, which is related to the index corresponding to the first SS / PBCH block structure.

20. The method according to claim 19, characterized in that, The impact factor may include a first numerical value, or the impact factor may include an exponential function.

21. The method according to claim 20, characterized in that, When the influence factor includes 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.

22. The method according to claim 21, 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, and the first identifier is determined based on the physical cell identifier.

23. The method according to claim 22, characterized in that, When there are two types of candidate SS / PBCH block structures, the first value corresponding to the two candidate SS / PBCH block structures is 0 and 22 respectively, or the first value corresponding to the two candidate SS / PBCH block structures is 0 and 21. When there are three types of candidate SS / PBCH block structures, the first value corresponding to the three candidate SS / PBCH block structures is 0, 14 and 28; or, the first value corresponding to the three candidate SS / PBCH block structures is 0, 13 and 26. When there are four types of candidate SS / PBCH block structures, the first value corresponding to the four candidate SS / PBCH block structures is 0, 11, 22 and 33.

24. The method according to claim 21, 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, 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.

25. The method according to claim 24, characterized in that, When there are two types of candidate SS / PBCH block structures, the first preset value is 22 or 21. When the number of candidate SS / PBCH block structures is three, the first preset value is 13 or 14. When the number of candidate SS / PBCH block structure types is four, the first preset value is 11.

26. The method according to claim 21, 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.

27. The method according to claim 26, characterized in that, When there are two types of candidate SS / PBCH block structures, the second preset value is 22 or 21. When the number of candidate SS / PBCH block structure types is three, the second preset value is 13 or 14. When the number of candidate SS / PBCH block structure types is four, the second preset value is 11.

28. The method according to claim 21, 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 corresponds to the index of the first SS / PBCH block structure, and the first identifier is determined based on the physical cell identifier.

29. The method according to claim 28, characterized in that, When there are two types of candidate SS / PBCH block structures, the first value corresponding to the two candidate SS / PBCH block structures is 23 and 43 respectively, or the first value corresponding to the two candidate SS / PBCH block structures is 19 and 43. When there are three types of candidate SS / PBCH block structures, the first value corresponding to the three candidate SS / PBCH block structures is 13, 29 and 43; or, the first value corresponding to the three candidate SS / PBCH block structures is 11, 29 and 43. When there are four types of candidate SS / PBCH block structures, the first value corresponding to the four candidate SS / PBCH block structures is 11, 19, 31 and 43; or, the first value corresponding to the three candidate SS / PBCH block structures is 11, 23, 31 and 43.

30. The method according to claim 20, characterized in that, When the influencing factor includes the 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.

31. The method according to claim 30, characterized in that, The exponential function is e j2πin / K j is an imaginary number, i is the index corresponding to the first SS / PBCH block structure, n is the sample index of the first PSS sequence, and K is the number of candidate SS / PBCH block structure types.

32. The method according to claim 30, characterized in that, The exponential function is e j2πim / K j 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.

33. The method according to any one of claims 30 to 32, 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.

34. The method according to any one of claims 30 to 32, 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.

35. An information determining device, characterized in that, The information determining device includes: The receiving module is used for the first master synchronization signal (PSS) sequence; The determination module is used to determine the first SS / PBCH block structure corresponding to the first PSS sequence, wherein the first SS / PBCH block structure is one of at least two candidate SS / PBCH block structures.

36. An information determining device, characterized in that, The information determining device includes: The transmitting module is used to transmit a first master synchronization signal PSS sequence, the first PSS sequence corresponding to a first SS / PBCH block structure, the first SS / PBCH block structure being one of at least two candidate SS / PBCH block structures.

37. 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 information determination method as described in any one of claims 1 to 17.

38. 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 information determination method as described in any one of claims 18 to 34.

39. 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 information determination method as described in any one of claims 1 to 17, or the information determination method as described in any one of claims 18 to 34.

40. A chip, characterized in that, The chip includes programmable logic circuits and / or program instructions. When the chip is run on a terminal device, it implements the information determination method as described in any one of claims 1 to 17, or the information determination method as described in any one of claims 18 to 34.

41. 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 information determination method as described in any one of claims 1 to 17, or the information determination method as described in any one of claims 18 to 34.

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