Synchronization signal transmission method and device, terminal and network side equipment

Abstract

The invention discloses a synchronization signal transmission method and device, a terminal and network side equipment, and belongs to the technical field of communication, and the synchronization signal transmission method comprises the steps that the terminal detects a first synchronization signal based on a first mode, and obtains first synchronization information; the terminal determines second synchronization information associated with a second synchronization signal based on the first synchronization information; the terminal detects the second synchronization signal based on the second synchronization information and a second mode; wherein the peak power consumption corresponding to the first mode is smaller than the peak power consumption corresponding to the second mode.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a synchronization signal transmission method, apparatus, terminal, and network-side device. Background Art

[0002] In a communication system, when a terminal initially searches for a cell, it usually needs to perform a blind detection of a synchronization signal (such as a Synchronization Signal and PBCH block (SSB)) to achieve synchronization with a network-side device to assist the terminal in accessing the network. Currently, the default synchronization signal (such as a Synchronization Signal and PBCH block (SSB)) period during initial cell search is 20 ms. Since the transmission period is short, it is not possible to achieve good network energy saving. By directly increasing the transmission period of the SSB, the network power consumption and load overhead can be effectively reduced, but at the same time, the complexity of the terminal's initial cell search for detecting the SSB will increase. Therefore, it is necessary to consider a design that can both reduce the network power consumption and load overhead and the complexity of the SSB detection in the terminal's initial cell search. Summary of the Invention

[0003] Embodiments of this application provide a synchronization signal transmission method, apparatus, terminal, and network-side device, which can solve the problem of relatively high complexity in synchronization signal detection.

[0004] In a first aspect, a synchronization signal transmission method is provided, including:

[0005] A terminal detects a first synchronization signal based on a first mode to obtain first synchronization information;

[0006] The terminal determines second synchronization information associated with a second synchronization signal based on the first synchronization information;

[0007] The terminal detects the second synchronization signal based on the second synchronization information and a second mode;

[0008] Wherein, the peak power consumption corresponding to the first mode is less than the peak power consumption corresponding to the second mode.

[0009] In a second aspect, a synchronization signal transmission method is provided, including:

[0010] A network-side device transmits a first synchronization signal and a second synchronization signal;

[0011] Wherein, the first synchronization signal carries first synchronization information, and the first synchronization information is used to determine second synchronization information for detecting the second synchronization signal.

[0012] In a third aspect, a synchronization signal transmission device is provided, including:

[0013] A detection module, configured to detect a first synchronization signal based on a first mode and obtain first synchronization information;

[0014] A determination module, configured to determine second synchronization information associated with a second synchronization signal based on the first synchronization information;

[0015] The detection module is further configured to detect the second synchronization signal based on the second synchronization information and a second mode;

[0016] Wherein, the peak power consumption corresponding to the first mode is less than the peak power consumption corresponding to the second mode.

[0017] In a fourth aspect, a synchronization signal transmission device is provided, including:

[0018] A sending module, configured to send a first synchronization signal and a second synchronization signal;

[0019] Wherein, the first synchronization signal carries first synchronization information, and the first synchronization information is used to determine second synchronization information for detecting the second synchronization signal.

[0020] In a fifth aspect, a terminal is provided. The terminal includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0021] In a sixth aspect, a terminal is provided, including a processor and a communication interface. Wherein, the communication interface is configured to detect a first synchronization signal based on a first mode and obtain first synchronization information;

[0022] The processor is configured to determine second synchronization information associated with a second synchronization signal based on the first synchronization information;

[0023] The communication interface is further configured to detect the second synchronization signal based on the second synchronization information and a second mode;

[0024] Wherein, the peak power consumption corresponding to the first mode is less than the peak power consumption corresponding to the second mode.

[0025] In a seventh aspect, a network-side device is provided. The network-side device includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the second aspect are implemented.

[0026] In an eighth aspect, a network-side device is provided, including a processor and a communication interface, where the communication interface is configured to send a first synchronization signal and a second synchronization signal;

[0027] Wherein, the first synchronization signal carries first synchronization information, and the first synchronization information is used to determine second synchronization information for detecting the second synchronization signal.

[0028] In a ninth aspect, a readable storage medium is provided, on which a program or instructions are stored, and when the program or instructions are executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0029] In a tenth aspect, a wireless communication system is provided, including: a terminal and a network-side device, where the terminal can be used to execute the steps of the method described in the first aspect, and the network-side device can be used to execute the steps of the method described in the second aspect.

[0030] In an eleventh aspect, a chip is provided, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or instructions to implement the method described in the first aspect, or implement the method described in the second aspect.

[0031] In a twelfth aspect, a computer program / program product is provided, the computer program / program product is stored in a storage medium, and the computer program / program product is executed by at least one processor to implement the method described in the first aspect, or implement the method described in the second aspect.

[0032] In the embodiments of the present application, the terminal detects a first synchronization signal based on a first mode to obtain first synchronization information; the terminal determines second synchronization information associated with the second synchronization signal based on the first synchronization information; the terminal detects the second synchronization signal based on the second synchronization information and a second mode; wherein, the peak power consumption corresponding to the first mode is less than the peak power consumption corresponding to the second mode. In this way, since the second synchronization information is determined after detecting the first synchronization signal, the second synchronization signal can be detected using the second synchronization information, thereby reducing the complexity of blind detection by the terminal. Therefore, the embodiments of the present application reduce the complexity of detecting synchronization signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0034] Figure 2 is a schematic flowchart of a synchronization signal transmission method provided by the embodiments of the present application;

[0035] Figure 3 It is an example diagram of a transmission scenario in a synchronization signal transmission method provided by an embodiment of the present application;

[0036] Figure 4 It is an example diagram of a transmission scenario in a synchronization signal transmission method provided by an embodiment of the present application;

[0037] Figure 5 It is a schematic flowchart of another synchronization signal transmission method provided by an embodiment of the present application;

[0038] Figure 6 It is a schematic structural diagram of a synchronization signal transmission device provided by an embodiment of the present application;

[0039] Figure 7 It is a schematic structural diagram of another synchronization signal transmission device provided by an embodiment of the present application;

[0040] Figure 8 It is a schematic structural diagram of a communication device provided by an embodiment of the present application;

[0041] Figure 9 It is a schematic structural diagram of a terminal provided by an embodiment of the present application;

[0042] Figure 10 It is a schematic structural diagram of a network - side device provided by an embodiment of the present application. Detailed implementation manners

[0043] The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first" and "second" are usually of the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "or" in the present application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0044] The term "indicate" in the present application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly tells the receiver specific information, operations to be performed, request results, etc. in the sent indication; an indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0045] It should be noted that the technology described in the embodiments of this application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, and can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and the NR term is used in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th Generation (6 th Generation, 6G) communication system.

[0046] Figure 1The block diagram of a wireless communication system to which the embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer, a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home devices with wireless communication functions, such as refrigerators, TVs, washing machines, or furniture, etc.), a game console, a personal computer (PC), a teller machine, or a self-service machine, etc. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be referred to as a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip, or a vehicle unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. Among them, the access network device can also be referred to as a radio access network (RAN) device, a radio access network function, or a radio access network unit. The access network device can include a base station, a wireless local area network (WLAN) access point (AP), or a wireless fidelity (WiFi) node, etc.Among them, the base station may be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home Node B (HNB), home evolved Node B, Transmission Reception Point (TRP), or some other suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of this application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0047] The core network device may include but is not limited to at least one of the following: core network node, core network function, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), Binding Support Function (BSF), Application Function (AF), etc. It should be noted that in the embodiments of this application, only the core network devices in the NR system are taken as examples for introduction, and the specific types of core network devices are not limited.

[0048] For ease of understanding, some content related to the embodiments of this application is described below:

[0049] 1. Low power wake up receiver (LP WUR).

[0050] The basic working principle of LP WUR is that the receiving end includes a first module and a second module. The first module is the main communication module, which is used to receive and transmit communication data from the transmitting end. The second module is the low-power module, which is used to receive the low-power wake-up signal (LP-WUS) and the low-power synchronization signal (LP-SS) sent by the transmitting end. The low-power wake-up signal is used to wake up the main communication module of the receiving end, and the low-power synchronization signal is used to provide time reference information and other information for receiving the low-power wake-up signal. For example, it is used for radio resource management (RRM) measurement of the serving cell, and can also provide wake-up link management, such as determining whether to activate or deactivate LP WUR according to the measurement results, and turning off the main receiver (MR). Among them, when the first module is not woken up by the second module, it is always in the off state and does not send or receive data. When downlink data arrives, the second module detects the wake-up signal sent by the transmitting end, and if the wake-up signal contains the information of this terminal, the second module triggers the first module to switch from the off state to the working state for data reception and transmission. The second module can be continuously turned on or not continuously turned on. When the second module is turned on, it can receive the low-power wake-up signal and the low-power synchronization signal.

[0051] II. Low-power wake-up signal.

[0052] Generally speaking, the low-power wake-up signal is some relatively simple on-off keying (OOK) signals, so that the receiver can obtain the wake-up notification through simple energy detection and subsequent possible sequence detection and identification processes.

[0053] Since in the NR system, the orthogonal frequency division multiplexing (OFDM) signal modulation method is generally adopted. Then the OOK signal can be generated by the OFDM signal generation method. For example, by sending or not sending the OFDM-modulated sequence, it represents ON / OFF in the time domain. The OOK signal can be received by a receiver with lower power consumption.

[0054] Furthermore, the OFDM-modulated sequence with modulation ON can further carry information through different sequences. For example, two sequences represent 0 and 1 information respectively, or four sequences represent 00, 01, 10, and 11 information respectively.

[0055] Optionally, in the waveform or modulation method of on-off keying (OOK) with overlaid orthogonal frequency division multiplexing (OFDM) sequence, a part of the information is modulated by OOK, and another part of the information is carried by the OFDM sequence with ON level.

[0056] III. NR SSB.

[0057] In the NR system, the SSB usually includes the Primary Synchronisation Signal (PSS), the Secondary Synchronisation Signal (SSS), the Physical Broadcast Channel (PBCH), and the Demodulation Reference Signal (DMRS) of the PBCH.

[0058] Among them, the main functions of the PSS and the SSS are to achieve symbol-level synchronisation and complete the determination of the Physical-layer cell identity (PCI) N I c D ell The PBCH contains the Master Information Block (MIB) of the cell and some other information. The PBCH-DMRS serves as the demodulation reference signal of the PBCH and contains some SSB-index information (the lower three bits).

[0059] Next, in conjunction with the accompanying drawings, the synchronisation signal transmission method provided by the embodiments of the present application will be described in detail through some embodiments and their application scenarios.

[0060] Refer to Figure 2 , the embodiments of the present application provide a synchronisation signal transmission method. As Figure 2 shown, the synchronisation signal transmission method includes:

[0061] Step 201, the terminal detects the first synchronisation signal based on the first mode and obtains the first synchronisation information;

[0062] Step 202, the terminal determines the second synchronisation information associated with the second synchronisation signal based on the first synchronisation information;

[0063] Step 203, the terminal detects the second synchronisation signal based on the second synchronisation information and the second mode;

[0064] Among them, the peak power consumption corresponding to the first mode is less than the peak power consumption corresponding to the second mode.

[0065] In the embodiments of the present application, the above-mentioned first synchronization signal can be understood as a low-power synchronization signal, and the above-mentioned second synchronization signal can be understood as a synchronization signal for assisting the terminal to access the network, such as an SSB.

[0066] Optionally, the fact that the peak power consumption corresponding to the first mode is less than the peak power consumption corresponding to the second mode can be understood as that the terminal can detect the first synchronization signal with lower power consumption and detect the second synchronization signal with higher power consumption. That is to say, the complexity of the first synchronization signal is lower than that of the second synchronization signal. Among them, for the first synchronization signal, the terminal uses a blind detection method for detection, and for the second synchronization signal, the terminal performs detection based on the second synchronization information, thereby reducing the complexity of the second synchronization signal detection.

[0067] Optionally, in some embodiments, the second synchronization signal can be understood as a non-low-power synchronization signal or a non-blind detection synchronization signal.

[0068] It should be noted that in the embodiments of the present application, the above-mentioned first mode can be understood or replaced with a first power consumption level, and the above-mentioned second mode can be understood or replaced with a second power consumption level.

[0069] In the embodiments of the present application, the terminal obtains first synchronization information by detecting a first synchronization signal based on a first mode; the terminal determines second synchronization information associated with a second synchronization signal based on the first synchronization information; the terminal detects the second synchronization signal based on the second synchronization information and the second mode; among them, the peak power consumption corresponding to the first mode is less than the peak power consumption corresponding to the second mode. In this way, since the second synchronization information is determined after detecting the first synchronization signal, the second synchronization signal can be detected by using the second synchronization information, thereby reducing the power consumption, complexity, and hardware requirements of the terminal for blind detection, such as a buffer. Therefore, the embodiments of the present application reduce the power consumption and complexity of the terminal for detecting synchronization signals.

[0070] Optionally, in some embodiments, the first synchronization signal adopts any one of the following waveforms or modulation methods: Amplitude Shift Keying (ASK); Frequency Shift Keying (FSK); On-Off Keying OOK superimposed on Orthogonal Frequency Division Multiplexing OFDM; OFDM.

[0071] In the embodiments of the present application, the waveform of the first synchronization signal is modulated by the above modulation method, so the power consumption and complexity of the terminal for blind detection of the first synchronization signal can be reduced.

[0072] Optionally, in some embodiments, the first synchronization information is carried by any of the following methods:

[0073] At least one common sequence;

[0074] A part of the first synchronization information is carried by at least one common sequence, and another part of the first synchronization information is carried by at least one information-carrying block, where the at least one information-carrying block includes a Cyclic Redundancy Check (CRC).

[0075] Optionally, in some embodiments, the first synchronization signal is a periodic signal, and each transmission period includes at least one set of time-domain transmission positions, and each set of time-domain transmission positions includes a group of time-domain transmission positions; wherein, the first synchronization signal satisfies at least one of the following:

[0076] The transmission method of multiple time-domain transmission positions within each set of time-domain transmission positions is the first transmission method;

[0077] The transmission method of multiple time-domain transmission positions corresponding to the same transmission position within different sets of time-domain transmission positions in each transmission period is the second transmission method;

[0078] Wherein, the first transmission method includes any one of the following: transmitting the same content and using the same beam for transmission; transmitting the same content and using beam scanning for transmission; transmitting different content and using the same beam for transmission; transmitting different content and using beam scanning for transmission;

[0079] The second transmission method includes any one of the following: transmitting the same content and using the same beam for transmission; transmitting different content and using the same beam for transmission.

[0080] It should be understood that for the transmission method of transmitting the same content and using the same beam for transmission, since the same content is sent in the same direction, the transmission reliability can be increased; for the transmission method of transmitting the same content and using beam scanning for transmission, since the same content is transmitted in different directions, the cell coverage can be increased; for the transmission method of transmitting different content and using the same beam for transmission, more content can be transmitted in one time-domain unit, thereby improving the transmission efficiency or rate.

[0081] Optionally, in some embodiments, the second synchronization signal is a periodic signal, and each transmission period includes at least one set of time-domain transmission positions, and each set of time-domain transmission positions includes a group of time-domain transmission positions; wherein, the second synchronization signal satisfies at least one of the following:

[0082] The transmission method of multiple time-domain transmission positions within each set of time-domain transmission positions is the third transmission method;

[0083] In each transmission period, the transmission modes of multiple time-domain transmission positions corresponding to the same transmission position within different sets of time-domain transmission positions are the fourth transmission mode;

[0084] Wherein, the third transmission mode includes any one of the following: the transmission contents are the same and the same beam is used for transmission; the transmission contents are the same and beam scanning is used for transmission; the transmission contents are different and the same beam is used for transmission; the transmission contents are different and beam scanning is used for transmission;

[0085] The fourth transmission mode includes any one of the following: the transmission contents are the same and the same beam is used for transmission; the transmission contents are different and the same beam is used for transmission.

[0086] In the embodiments of the present application, the transmission modes of multiple time-domain transmission positions within each set of time-domain transmission positions can be understood as the transmission modes of different time-domain transmission positions within each set of time-domain transmission positions; the transmission modes of multiple time-domain transmission positions corresponding to the same transmission position within different sets of time-domain transmission positions in each transmission period can be understood as: the transmission modes of different time-domain transmission positions corresponding to the same transmission position within different sets of time-domain transmission positions in each transmission period.

[0087] Optionally, in some embodiments, the second synchronization information includes at least one of the following:

[0088] Transmission configuration information;

[0089] Frequency domain information;

[0090] Time domain information.

[0091] Optionally, in some embodiments, the transmission configuration information includes at least one of the following:

[0092] The number of sets of time-domain transmission positions included in one transmission period;

[0093] The number of time-domain transmission positions included in each set of time-domain transmission positions;

[0094] The transmission modes of multiple time-domain transmission positions in each set of time-domain transmission positions;

[0095] The transmission modes of multiple time-domain transmission positions corresponding to the same transmission position within different sets of time-domain transmission positions in each transmission period.

[0096] In the embodiments of the present application, the above-mentioned transmission mode can be understood or replaced with a transmission method or a transmission scheme.

[0097] Optionally, in some embodiments, the first synchronization information includes at least one of the following:

[0098] Indices corresponding to the set of time-domain transmission positions included in one transmission period of the second synchronization signal;

[0099] Indices corresponding to the number of time-domain transmission positions included in each set of time-domain transmission positions of the second synchronization signal;

[0100] Indices corresponding to the transmission modes of multiple time-domain transmission positions in each set of time-domain transmission positions of the second synchronization signal;

[0101] Indices corresponding to the transmission modes of multiple time-domain transmission positions at the same transmission position in different sets of time-domain transmission positions in each transmission period of the second synchronization signal.

[0102] In the embodiments of the present application, at least one of the index set corresponding to the set of time-domain transmission positions, the index set corresponding to the number of time-domain transmission positions, the index set corresponding to the transmission modes of multiple time-domain transmission positions in each set of time-domain transmission positions, and the index set corresponding to the transmission modes of multiple time-domain transmission positions at the same transmission position in different sets of time-domain transmission positions in each transmission period may be agreed upon by the protocol or configured by the network-side device, and will not be further limited herein.

[0103] Optionally, in some embodiments, the frequency-domain information includes at least one of the following: frequency point information and bandwidth information.

[0104] Optionally, in some embodiments, the second synchronization information associated with the second synchronization signal determined by the terminal based on the first synchronization information includes any one of the following:

[0105] When one frequency point in the first frequency point group is uniquely associated with one frequency point in the second frequency point group, the terminal determines the frequency point information based on the index of one frequency point in the second frequency point group included in the first synchronization information;

[0106] When one frequency point in the first frequency point group is uniquely associated with one frequency point in the second frequency point group, the terminal determines the frequency point information based on the frequency point where the first synchronization signal corresponding to the first synchronization information is located;

[0107] When one frequency point in the first frequency point group is uniquely associated with at least two frequency points in the second frequency point group, the terminal determines the frequency point information based on the set of frequency point indices or the set of frequency point index identifiers in the second frequency point group included in the first synchronization information and the index of one frequency point in the set of frequency point indices;

[0108] When one frequency point in the first frequency point group is uniquely associated with at least two frequency points in the second frequency point group, the terminal determines the frequency point information based on the index of one frequency point in the set of frequency point indices in the second frequency point group included in the first synchronization information;

[0109] Among them, the first frequency point group is used to transmit the first synchronization signal, and the second frequency point group is used to transmit the second synchronization signal.

[0110] In the embodiments of the present application, the above-mentioned first frequency point group includes at least one frequency point, and the second frequency point group includes at least one frequency point. Among them, the frequency points in the first frequency point group and the frequency points in the second frequency point group may be the same or different. For example, they may be partially the same, or all the same, or partially different, or all different.

[0111] That a frequency point in the first frequency point group is uniquely associated with a frequency point in the second frequency point group can be understood as: the number of frequency points included in the first frequency point group is the same as the number of frequency points included in the second frequency point group, and the frequency points in the first frequency point group and the frequency points in the second frequency point group are in one-to-one correspondence. Specifically, the association relationship between the first frequency point group and the second frequency point group can be agreed upon by the protocol or configured by the network-side device.

[0112] That a frequency point in the first frequency point group is uniquely associated with at least two frequency points in the second frequency point group can be understood as: the number of frequency points included in the first frequency point group is less than the number of frequency points included in the second frequency point group, and each frequency point in the first frequency point group (part or all of the frequency point set) is associated with at least two frequency points in the second frequency point group, where there is no intersection between the different frequency points in the first frequency point group and the associated frequency points in the second frequency point group. Specifically, the association relationship between the first frequency point group and the second frequency point group can be agreed upon by the protocol or configured by the network-side device.

[0113] It should be noted that the terminal determines the frequency point information based on the frequency point where the first synchronization signal corresponding to the first synchronization information is located can be understood as: the terminal determines the frequency point information of the second synchronization signal based on the detected frequency point where the first synchronization signal is located.

[0114] Optionally, in some embodiments, the terminal determines the second synchronization information associated with the second synchronization signal based on the first synchronization information, including:

[0115] The terminal determines the bandwidth information based on the first index included in the first synchronization information;

[0116] Among them, the first index is used to indicate at least one bandwidth information in the bandwidth information set of the second synchronization signal.

[0117] In the embodiments of the present application, the above-mentioned first index may include one or more index values for indicating bandwidth information; or the first index includes one index value for indicating bandwidth information, and one or more first indexes are carried in the first synchronization information.

[0118] Optionally, the set of bandwidth information of the second synchronization signal above can be agreed upon by a protocol or configured by a network-side device, and no further limitation is provided herein.

[0119] Optionally, in some embodiments, the time domain information includes at least one of the following:

[0120] First time domain position information, where the first time domain position information includes at least one of start time domain position information and end time domain position information;

[0121] Monitoring time window position information;

[0122] Period information.

[0123] Optionally, in some embodiments, the second synchronization information associated with the second synchronization signal determined by the terminal based on the first synchronization information includes at least one of the following;

[0124] The terminal determines the first time domain position information based on the first time offset information included in the first synchronization information, where the first time offset information includes the offset value between the second time domain position information and the first time domain position information;

[0125] The terminal determines the first time domain position information based on the second time domain position information and the second time offset information, where the second time offset information is pre-configured based on a protocol agreement or by a network-side device, and the second time offset information includes the offset value between the second time domain position information and the first time domain position information;

[0126] Wherein, the second time domain position information includes at least one of the start time domain position and the end time domain position of the first synchronization signal.

[0127] Optionally, in some embodiments, the first time domain position information above can correspond to the second time domain position information. For example, both the first time domain position information and the second time domain position information include start time domain position information, or both the first time domain position information and the second time domain position information include end time domain position information, or both the first time domain position information and the second time domain position information include start time domain position information and end time domain position information.

[0128] Optionally, the first time offset information includes at least one of the following:

[0129] The offset value between the start time domain position of the first synchronization signal and the start time domain position of the second synchronization signal;

[0130] The offset value between the end time domain position of the first synchronization signal and the end time domain position of the second synchronization signal;

[0131] The offset value between the starting time domain position of the first synchronization signal and the ending time domain position of the second synchronization signal;

[0132] The offset value between the ending time domain position of the first synchronization signal and the starting time domain position of the second synchronization signal.

[0133] Optionally, the understanding of the above second time offset information is the same as that of the first time offset information. The difference between the two is that the first time offset information is carried by the first synchronization information, and the second time offset information is agreed by the protocol or pre-configured by the network side device.

[0134] Optionally, in some embodiments, the second synchronization information determined by the terminal based on the first synchronization information and associated with the second synchronization signal includes any of the following:

[0135] The terminal determines the listening time window position information based on the third time offset information and the first listening window length;

[0136] The terminal determines the listening time window position information based on the fourth time offset information and the second listening window length;

[0137] Wherein, the third time offset information is included in the first synchronization information, and the third time offset information includes the offset value between the second time domain position information and the starting position of the time domain listening window of the second synchronization signal. The first listening window length is agreed by the protocol or pre-configured by the network side device or included in the first synchronization information; the fourth time offset information is agreed by the protocol or pre-configured by the network side device, and the fourth time offset information includes the offset value between the second time domain position information and the starting position of the time domain listening window of the second synchronization signal. The second listening window length is included in the first synchronization information.

[0138] Optionally, in some embodiments, the second synchronization information determined by the terminal based on the first synchronization information and associated with the second synchronization signal includes any of the following:

[0139] The terminal determines the period information based on the second index, and the second index is used to indicate at least one period length in the set of period lengths;

[0140] The terminal determines the period information based on the period length of the first synchronization signal corresponding to the first synchronization information.

[0141] In the embodiments of the present application, determining the period information can be understood as determining the period length of the second synchronization signal.

[0142] Optionally, the above set of period lengths can be understood as the set of period lengths of the second synchronization signal, and can be specifically agreed by the protocol or pre-configured by the network side device.

[0143] In some embodiments, the second index may include one or more index values, and each index value is used to indicate one period length in the set of period lengths of the second synchronization signal. In some embodiments, the first synchronization information may include multiple second indexes, and each second index is used to indicate one period length in the set of period lengths of the second synchronization signal.

[0144] Optionally, in some embodiments, when the terminal determines the period information based on the period length of the first synchronization signal corresponding to the first synchronization information, the relationship between the period length of the second synchronization signal and the period length of the first synchronization signal may be agreed upon by protocol or pre-configured by the network-side device. For example, the period length of the second synchronization signal is the same as the period length of the first synchronization signal, or the period length of the second synchronization signal is an integer multiple of the period length of the first synchronization signal. In this way, the terminal can determine the period length of the second synchronization signal based on the detected period length of the first synchronization signal.

[0145] Optionally, the manner in which the terminal determines the period length of the first synchronization signal may be determined by detection, or determined by protocol agreement or pre-configuration by the network-side device.

[0146] Optionally, in some embodiments, the first configuration information of the first synchronization signal includes at least one of the following: a set of candidate frequency points of the first frequency point group; frequency domain bandwidth; time domain period; signal waveform; sequence form; information block size; manner of carrying the first synchronization information; transmission manner.

[0147] Optionally, in some embodiments, the second configuration information of the second synchronization signal includes at least one of the following: a set of candidate frequency points of the second frequency point group; frequency domain bandwidth; time domain length; time domain period; signal waveform; sequence form; information block size; transmission manner.

[0148] Optionally, in some embodiments, the first synchronization signal is associated with the second synchronization signal, and the association relationship between the first synchronization signal and the second synchronization signal includes at least one of the following:

[0149] The association relationship between the first frequency point group and the second frequency point group, where the first frequency point group is used to transmit the first synchronization signal and the second frequency point group is used to transmit the second synchronization signal;

[0150] The association relationship between the frequency point of the first synchronization signal and the frequency point of the second synchronization signal;

[0151] The association relationship between the frequency point bandwidth of the first synchronization signal and the frequency point bandwidth of the second synchronization signal;

[0152] The correlation between the transmission mode of the first synchronization signal and the transmission mode of the second synchronization signal;

[0153] The time offset information between the first synchronization signal and the second synchronization signal.

[0154] The first synchronization signal and the second synchronization signal are time-division multiplexing (TDM) or frequency-division multiplexing (FDM).

[0155] To better understand the present application, the following is illustrated by some examples.

[0156] Embodiment 1, the first synchronization signal and the second synchronization signal are transmitted periodically; according to the first synchronization information, the transmission configuration information of the second synchronization signal is determined.

[0157] In one example, the first synchronization signal adopts any one of the following waveforms or modulation methods: on-off keying OOK superimposed on orthogonal frequency division multiplexing OFDM; OFDM.

[0158] In this way, the terminal can adopt a receiver with lower power consumption, such as an envelope detection receiver to detect the amplitude shift keying including on-off keying (ON-OFF KEY, OOK), and the amplitude information of OOK with overlaid OFDM sequence. The frequency information of frequency shift keying (FSK) can also be detected by multiple parallel envelope detection receivers. The first synchronization signal can also be detected by the low power consumption mode of the receiver, such as the method of envelope detection.

[0159] On the other hand, when the first synchronization signal adopts the OFDM waveform, the terminal can perform detection only in the time domain and does not need to rely on modules that transform the signal into the frequency domain, such as FFT, etc., to achieve the purpose of reducing power consumption. As described above, due to the adoption of waveforms and signal detection methods that are easily detected by low power consumption receivers or the low power consumption mode of receivers, the terminal can detect the first synchronization signal in the first mode, obtain the first synchronization information according to the first synchronization signal, determine the second synchronization information, and the terminal adopts the second mode to detect the second synchronization signal according to the second synchronization information.

[0160] Optionally, both the first synchronization signal and the second synchronization signal can adopt a periodic transmission mode, such as Figure 3 As shown, each transmission period contains multiple time-domain transmission position sets, each time-domain transmission position set contains a group of time-domain transmission positions, and one of the following is adopted for the transmission methods of the multiple time-domain transmission positions in each time-domain transmission position set:

[0161] The transmission content is the same, and the same beam is used for transmission;

[0162] The transmitted content is the same, and the transmission mode is in accordance with the beam scanning mode for transmission;

[0163] The transmitted content is different, and the transmission mode is to use the same beam for transmission;

[0164] The transmitted content is different, and the transmission mode is in accordance with the beam scanning mode for transmission.

[0165] Optionally, for multiple time-domain transmission positions corresponding to the same transmission position index within different time-domain transmission position sets in each transmission cycle, one of the following transmission methods is adopted:

[0166] The transmitted content is the same, and the transmission mode is to use the same beam for transmission;

[0167] The transmitted content is different, and the transmission mode is to use the same beam for transmission.

[0168] In one example, the first synchronization information includes at least one of the following:

[0169] The index corresponding to the set of time-domain transmission positions included in one transmission cycle of the second synchronization signal;

[0170] The index corresponding to the number of time-domain transmission positions included in each time-domain transmission position set of the second synchronization signal;

[0171] The index corresponding to the transmission mode of multiple time-domain transmission positions in each time-domain transmission position set of the second synchronization signal;

[0172] The index corresponding to the transmission mode of multiple time-domain transmission positions corresponding to the same transmission position within different time-domain transmission position sets in each transmission cycle of the second synchronization signal.

[0173] Optionally, according to the index included in the first synchronization information, the transmission configuration information of the second synchronization signal can be obtained by querying in the corresponding index set.

[0174] For example, it can be agreed upon by protocol or pre-configured by the network-side device for the index set corresponding to the set of time-domain transmission positions (including the relationship between the set of time-domain transmission positions and the index). Based on the index corresponding to the set of time-domain transmission positions included in one transmission cycle of the second synchronization signal and the index set corresponding to the set of time-domain transmission positions, the set of time-domain transmission positions included in one transmission cycle of the second synchronization signal and the number of sets of time-domain transmission positions included in one transmission cycle of the second synchronization signal can be determined.

[0175] For example, it can be agreed upon through a protocol or the network-side device can pre-configure an index set corresponding to the number of time-domain transmission positions (the set includes the correspondence between the number of time-domain transmission positions and the indexes). Based on the index corresponding to the number of time-domain transmission positions included in each time-domain transmission position set of the second synchronization signal and the index set corresponding to the number of time-domain transmission positions, the index corresponding to the number of time-domain transmission positions included in each time-domain transmission position set of the second synchronization signal can be determined.

[0176] For example, it can be agreed upon through a protocol or the network-side device can pre-configure an index set corresponding to the transmission mode (the set includes the correspondence between the transmission mode and the indexes). Based on the index corresponding to the transmission mode of multiple time-domain transmission positions in each time-domain transmission position set of the second synchronization signal and the index set corresponding to the transmission mode, the transmission mode of multiple time-domain transmission positions in each time-domain transmission position set of the second synchronization signal can be determined. It can also be based on the index corresponding to the transmission mode of multiple time-domain transmission positions corresponding to the same transmission position in different time-domain transmission position sets within each transmission period of the second synchronization signal and the index set corresponding to the transmission mode, to determine the transmission mode of multiple time-domain transmission positions corresponding to the same transmission position in different time-domain transmission position sets within each transmission period of the second synchronization signal.

[0177] Optionally, in one example, there is a time transmission interval between the first synchronization signal and the second synchronization signal. The periods of the first synchronization signal and the second synchronization signal can be the same or different. The transmission frequency points of the first synchronization signal and the second synchronization signal can be the same or different. The number of time-domain transmission position sets included in each transmission period of the first synchronization signal and the second synchronization signal can be the same or different. The number of time-domain transmission positions included in each time-domain transmission position set of the first synchronization signal and the second synchronization signal can be the same or different.

[0178] In another example, as Figure 4 shown, the first synchronization signal and the second synchronization signal are transmitted adjacent to each other. There is no time interval between the end position of the transmission of the first synchronization signal and the start position of the transmission of the second synchronization signal. The periods of the first synchronization signal and the second synchronization signal are the same. The transmission frequency points of the first synchronization signal and the second synchronization signal are the same. The number of time-domain transmission position sets included in each transmission period of the first synchronization signal and the second synchronization signal is the same. The number of time-domain transmission positions included in each time-domain transmission position set of the first synchronization signal and the second synchronization signal is the same. The first synchronization information can indicate the transmission configuration information of the second synchronization signal.

[0179] Embodiment 2: Determine the time-domain information (or time-domain position information) of the second synchronization signal according to the first synchronization information.

[0180] In one example, as Figure 4As shown, the first synchronization signal and the second synchronization signal are transmitted adjacent to each other. There is no time interval between the end position of the transmission of the first synchronization signal and the start position of the transmission of the second synchronization signal. The transmission frequency points of the first synchronization signal and the second synchronization signal are the same. The first synchronization signal can be detected using a low-power receiver or the low-power mode of the terminal, including multiple frequency point positions in the first frequency point group, and continuously detecting in the time domain whether there is a first synchronization signal. The method for determining whether there is a first synchronization signal includes at least one of the following:

[0181] All common sequence detections included in the first synchronization signal meet the preset threshold;

[0182] All information-bearing block CRC checks in the first synchronization signal pass.

[0183] After the first synchronization signal is successfully detected, according to the obtained first synchronization information, determine the time domain information of the second synchronization signal.

[0184] Optionally, in one example, the first synchronization information may carry indication information for indicating the period information of the second synchronization signal. For example, the second index may be included in the first synchronization information, and the period length of the second synchronization signal is determined according to the second index and the set of period length indexes pre-configured by the protocol or the network-side device (the set includes the association relationship between the period length and the index).

[0185] Optionally, in one example, the period information of the second synchronization signal may be implicitly indicated by the sequence carried by the first synchronization information. For example, the protocol stipulates or the network-side device pre-configures the association relationship between the sequence and the period length. The terminal can determine the period length of the second synchronization signal based on the sequence carried by the first synchronization information and the association relationship between the sequence and the period length.

[0186] Optionally, the time offset between the start or end position in the time domain of the first synchronization signal and the start or end position in the time domain of the second synchronization signal is obtained by pre-configuration of the network-side device or pre-definition of the protocol. The terminal determines the start or end position in the time domain of the second synchronization signal according to the detected start or end position in the time domain of the first synchronization signal and the time offset (i.e., the above first time offset information or second time offset information).

[0187] Optionally, it is determined by pre-configuration of the network-side device or pre-definition of the protocol that the period length of the second synchronization signal is the same as the period length of the first synchronization signal. The terminal determines the period length of the second synchronization signal based on the period length of the first synchronization signal.

[0188] In another example, such as Figure 3As shown, there is a time transmission interval between the first synchronization signal and the second synchronization signal. The periods of the first synchronization signal and the second synchronization signal can be the same or different. The transmission frequency points of the first synchronization signal and the second synchronization signal can be the same or different. The number of time-domain transmission position sets included in each transmission period of the first synchronization signal and the second synchronization signal can be the same or different. The number of time-domain transmission positions included in each time-domain transmission position set of the first synchronization signal and the second synchronization signal can be the same or different. The first synchronization signal can be detected using a low-power receiver or the low-power mode of a terminal, including multiple frequency positions in the first frequency band group, and continuously detecting in the time domain whether there is a first synchronization signal. The method for determining whether there is a first synchronization signal includes at least one of the following:

[0189] All common sequence detections included in the first synchronization signal meet a preset threshold;

[0190] All information-bearing block CRC checks included in the first synchronization signal pass.

[0191] Optionally, after the first synchronization signal is successfully detected, according to the obtained first synchronization information, the time-domain information of the second synchronization signal is determined.

[0192] For example, determining the time-domain information of the second synchronization signal according to the first synchronization information includes: using the start or end position of the time domain of the first synchronization signal as a reference position, and after a time offset, obtaining the start or end position of the time domain of the second synchronization signal.

[0193] Optionally, in one example, the first synchronization information can indicate the first time offset information, that is, the offset value between the start or end position of the time domain of the first synchronization signal and the start position of the time-domain listening window of the second synchronization signal.

[0194] Optionally, in one example, the time offset (i.e., the second time offset information) between the start or end position of the time domain of the first synchronization signal and the start or end position of the time domain of the second synchronization signal is obtained through pre-configuration by a network-side device or pre-definition by a protocol. The terminal determines the start or end position of the time domain of the second synchronization signal according to the detected start or end position of the time domain of the first synchronization signal and the time offset (i.e., the second time offset information).

[0195] Optionally, when determining the time-domain listening window position information of the second synchronization signal according to the first synchronization information, it includes one of the following:

[0196] The first synchronization information indicates the time offset (i.e., the third time offset information) between the start or end position of the time domain of the first synchronization signal and the start position of the time-domain listening window of the second synchronization signal and the listening window length (i.e., the first listening window length);

[0197] The first synchronization information indicates the time offset (i.e., the fourth time offset information) between the start or end position of the first synchronization signal in the time domain and the start position of the time domain listening window of the second synchronization signal, and the length of the listening window (i.e., the first listening window length) is determined by means of pre-configuration by the network or pre-definition by the protocol.

[0198] Optionally, the first synchronization information may further indicate the time offset and the listening window length between the position obtained by adding a fixed time length offset to the start or end position of the first synchronization signal and the start position of the time domain listening window of the second synchronization signal. The fixed time length offset can be determined by means of pre-configuration by the network or pre-definition by the protocol, for example, not less than the processing time of the terminal for the first synchronization signal.

[0199] Optionally, determining the second synchronization signal period information according to the first synchronization information may include at least one of the following:

[0200] The first synchronization information indicates the period length of the second synchronization signal;

[0201] It is determined by means of pre-configuration by the network or pre-definition by the protocol that the period length of the second synchronization signal is the same as that of the first synchronization signal, or the period length of the second synchronization signal is an integer multiple of the period length of the first synchronization signal, or the period length of the first synchronization signal is an integer multiple of the period length of the second synchronization signal. The terminal determines the period length of the second synchronization signal based on the period length of the first synchronization signal.

[0202] Among them, the method for the terminal to determine the period of the first synchronization signal includes determining by means of detection, or by means of pre-configuration or pre-definition by the protocol.

[0203] Optionally, the terminal determines the start position and the length of the listening window of the second synchronization signal, and detects the time position of the second synchronization signal within the listening window. This method can be flexibly applied to the following multiple situations, effectively reducing the complexity of the indication of the first synchronization signal: the periods of the first synchronization signal and the second synchronization signal may be the same or different, the transmission frequency points of the first synchronization signal and the second synchronization signal may be the same or different, the number of time domain transmission position sets included in each transmission period of the first synchronization signal and the second synchronization signal may be the same or different, and the number of time domain transmission positions included in each time domain transmission position set of the first synchronization signal and the second synchronization signal may be the same or different.

[0204] Embodiment 3: Determine the frequency domain information (or referred to as frequency domain position information) of the second synchronization signal according to the first synchronization information.

[0205] Optionally, determining the frequency point information of the second synchronization signal according to the first synchronization information may include:

[0206] The first synchronization information indicates the frequency point index of the second synchronization signal in the second frequency point group; for example, a frequency point index of the first frequency point group is uniquely associated with a frequency point index of the second frequency point group, or a frequency point index of the first frequency point group corresponds to a set of more than one frequency point of the second frequency point group, and the first synchronization information indicates one frequency point in the set.

[0207] Optionally, the frequency point information included in the first frequency point group and the second frequency point group may be the same or different.

[0208] Optionally, determining the second synchronization signal bandwidth information according to the first synchronization information includes: the first synchronization information indicates the bandwidth information of the second synchronization signal.

[0209] Optionally, the terminal detects the first synchronization signal in the first frequency point group, and the candidate frequency points of the first frequency point group are related to at least one of the following:

[0210] The operating frequency band, including the type (such as Time Division Duplex (TDD), Frequency Division Duplex (FDD), licensed, and Unlicensed, etc.) and the frequency band range;

[0211] The subcarrier spacing of the first synchronization signal, for example, the subcarrier spacing adopted by the OFDM generator that generates the first synchronization signal;

[0212] Global synchronization channel number (GSCN);

[0213] Absolute Radio Frequency Channel Number (ARFCN);

[0214] The frequency bands supported by the terminal.

[0215] Optionally, the terminal detects the second synchronization signal in the second frequency point group, and the candidate frequency points of the second frequency point group are related to at least one of the following:

[0216] The operating frequency band, including the type (such as Time Division Duplex (TDD), Frequency Division Duplex (FDD), licensed, and Unlicensed, etc.) and the frequency band range;

[0217] The subcarrier spacing of the second synchronization signal, for example, the subcarrier spacing adopted by the OFDM generator that generates the second synchronization signal;

[0218] GSCN;

[0219] ARFCN;

[0220] Frequency bands supported by the terminal.

[0221] In one example, the frequency point information included in the first frequency point group is exactly the same as that included in the second frequency point group, that is, the number of frequency points included and the candidate frequency point positions are exactly the same. The terminal determines the frequency point position of the second synchronization signal by detecting the frequency point position of the first synchronization signal, that is, the first synchronization signal and the second synchronization signal are transmitted at the same frequency point position. The first synchronization information indicates the bandwidth information of the second synchronization signal, or the bandwidth information of the second synchronization signal is determined by means of network and configuration or protocol pre - definition.

[0222] In one example, the candidate frequency point positions included in the first frequency point group are different from those included in the second frequency point group, but the number of frequency points is the same. One frequency point index of the first frequency point group is uniquely associated with one frequency point index of the second frequency point group. The terminal determines the frequency point index where the first synchronization signal is located in the first frequency point group by detecting the frequency point position of the first synchronization signal, and thus determines the frequency point index of the second synchronization signal in the second frequency point group. The first synchronization information indicates the bandwidth information of the second synchronization signal, or the bandwidth information of the second synchronization signal is determined by means of network and configuration or protocol pre - definition.

[0223] In one example, the frequency point information included in the first frequency point group is different from that included in the second frequency point group, such as different candidate frequency point positions, different numbers of frequency points, or both. At this time, one frequency point index of the first frequency point group corresponds to a set of more than one frequency point in the second frequency point group. The first synchronization information indicates one frequency point in the set. The first synchronization information indicates the bandwidth information of the second synchronization signal, or the bandwidth information of the second synchronization signal is determined by means of network and configuration or protocol pre - definition.

[0224] Embodiment 4, the terminal detects the first synchronization signal and the second synchronization signal.

[0225] In one example, the first synchronization signal uses ASK and includes OOK or FSK methods. Therefore, the terminal can use a low - power receiver or a low - power receiving mode to detect the first synchronization signal, and the detection power consumption is low. The second synchronization signal uses the OFDM method. Therefore, the terminal uses an OFDM receiver to detect the second synchronization signal, and the detection power consumption is high.

[0226] The first synchronization signal includes at least one sequence and at least one information-bearing block (including CRC check). The terminal continuously detects the first synchronization signal on multiple candidate frequencies in the first frequency point group and in the time domain. At this time, the first storage unit is used to save the first synchronization signal on multiple candidate frequencies and in the time domain that is equal to the transmission period of the first synchronization signal. Before successfully detecting the first synchronization signal, the second synchronization signal is not saved and not detected. The method for determining whether the first synchronization signal is successfully detected includes one of the following:

[0227] All common sequences included in the first synchronization signal are detected to meet the preset threshold;

[0228] All CRC checks of the information-bearing blocks included in the first synchronization signal pass.

[0229] Optionally, after successfully detecting the first synchronization signal, determine the time-frequency resource position information of the second synchronization signal according to the first synchronization information. Because clear time-frequency resource information can be obtained, the blind detection requirement is reduced. Only one candidate frequency and the second synchronization signal in the time domain that is much smaller than the transmission period of the second synchronization signal need to be saved by the second storage unit and detected. Therefore, the detection complexity and the requirement for the second storage unit are greatly reduced.

[0230] Embodiment 5, the type of the second synchronization signal.

[0231] In some embodiments, considering the type of the second synchronization signal, for example, it can be cell-defined SSB (CD-SSB) or non-cell-defined SSB (NCD-SSB). It can be understood that both types of SSBs can help the UE perform timing and frequency synchronization. The difference is that the parameters indicated by the NCD-SSB and the CD-SSB are different.

[0232] For example, NCD-SSB:

[0233] It does not indicate the relative position relationship between the SSB and the resource block (RB) grid, the time-frequency domain resources and monitoring information of the remaining minimum system information (RMSI) control resource set 0 (CORESET#0). That is, the terminal cannot camp on or access the cell through the reception of this type of SSB. Instead, the PBCH in the NCD-SSB at the GSCN position will indicate the position of the CD-SSB: indicate the frequency domain position of the nearest CD-SSB in the frequency domain, or indicate that there is no CD-SSB within a certain frequency domain range.

[0234] It can be transmitted at the GSCN or not at the GSCN position. For example, the terminal can find the CD-SSB through the NCD-SSB, and then perform cell camping or access.

[0235] CD-SSB:

[0236] The PBCH in CD-SSB directly indicates the RMSI PDCCH search space, or the CORESET #0 of SIB1 or the RMSI PDCCH search space can be directly found through CD-SSB.

[0237] RRM measurements, RLM, etc.;

[0238] It must be transmitted at the frequency position corresponding to the GSCN.

[0239] Optionally, the type of the second synchronization signal is CD-SSB or NCD-SSB.

[0240] Optionally, the second synchronization signal includes one or more synchronization signals.

[0241] In one embodiment, the position information of multiple second synchronization signals includes the positions of different types of second synchronization signals.

[0242] Optionally, the first synchronization information indicates the time offset of the start or end position of one or more second synchronization signals in the time domain. For example, the first synchronization information indicates at least one of the offset of CD-SSB and the offset of NCD-SSB. In this way, one or more second synchronization signal information can be directly obtained through the first synchronization signal.

[0243] In some embodiments, there is a specific time-frequency domain position relationship between the first synchronization signal and the second synchronization signal.

[0244] Optionally, the first synchronization signal and the second synchronization signal can be FDM, that is, the time domain offset between the two is 0.

[0245] Optionally, the first synchronization signal and the second synchronization signal can be in a TDM relationship that meets certain conditions. For example, the offset between the two satisfies being greater than a specific value.

[0246] Referring to Figure 5 , the embodiments of the present application further provide a synchronization signal transmission method, as Figure 5 shown, the synchronization signal transmission method includes:

[0247] Step 501, the network side device sends the first synchronization signal and the second synchronization signal;

[0248] Wherein, the first synchronization signal carries the first synchronization information, and the first synchronization information is used to determine the second synchronization information for detecting the second synchronization signal.

[0249] Optionally, the first synchronization signal adopts any one of the following waveforms or modulation methods: Amplitude Shift Keying (ASK); Frequency Shift Keying (FSK); On-Off Keying (OOK) superimposed on Orthogonal Frequency Division Multiplexing (OFDM); OFDM.

[0250] Optionally, the first synchronization information is carried by any one of the following methods:

[0251] At least one common sequence;

[0252] A part of the first synchronization information is carried by at least one common sequence, and another part of the first synchronization information is carried by at least one information-carrying block, and the at least one information-carrying block includes Cyclic Redundancy Check (CRC).

[0253] Optionally, the first synchronization signal is a periodic signal, and each transmission period includes at least one set of time-domain transmission positions, and each set of time-domain transmission positions includes a group of time-domain transmission positions; wherein, the first synchronization signal satisfies at least one of the following:

[0254] The transmission method of multiple time-domain transmission positions within each set of time-domain transmission positions is the first transmission method;

[0255] The transmission method of multiple time-domain transmission positions corresponding to the same transmission position within different sets of time-domain transmission positions in each transmission period is the second transmission method;

[0256] Wherein, the first transmission method includes any one of the following: the transmission content is the same and is transmitted using the same beam; the transmission content is the same and is transmitted using a beam scanning method; the transmission content is different and is transmitted using the same beam; the transmission content is different and is transmitted using a beam scanning method;

[0257] The second transmission method includes any one of the following: the transmission content is the same and is transmitted using the same beam; the transmission content is different and is transmitted using the same beam.

[0258] Optionally, the second synchronization signal is a periodic signal, and each transmission period includes at least one set of time-domain transmission positions, and each set of time-domain transmission positions includes a group of time-domain transmission positions; wherein, the second synchronization signal satisfies at least one of the following:

[0259] The transmission method of multiple time-domain transmission positions within each set of time-domain transmission positions is the third transmission method;

[0260] The transmission method of multiple time-domain transmission positions corresponding to the same transmission position within different sets of time-domain transmission positions in each transmission period is the fourth transmission method;

[0261] Among them, the third transmission mode includes any one of the following: transmitting the same content and using the same beam for transmission; transmitting the same content and using beam scanning for transmission; transmitting different content and using the same beam for transmission; transmitting different content and using beam scanning for transmission;

[0262] The fourth transmission mode includes any one of the following: transmitting the same content and using the same beam for transmission; transmitting different content and using the same beam for transmission.

[0263] Optionally, the second synchronization information includes at least one of the following:

[0264] Transmission configuration information;

[0265] Frequency domain information;

[0266] Time domain information.

[0267] Optionally, the transmission configuration information includes at least one of the following:

[0268] The number of sets of time domain transmission positions included in one transmission period;

[0269] The number of time domain transmission positions included in each set of time domain transmission positions;

[0270] The transmission mode of multiple time domain transmission positions in each set of time domain transmission positions;

[0271] The transmission mode of multiple time domain transmission positions corresponding to the same transmission position in different sets of time domain transmission positions within each transmission period.

[0272] Optionally, the first synchronization information includes at least one of the following:

[0273] The index corresponding to the set of time domain transmission positions included in one transmission period of the second synchronization signal;

[0274] The index corresponding to the number of time domain transmission positions included in each set of time domain transmission positions of the second synchronization signal;

[0275] The index corresponding to the transmission mode of multiple time domain transmission positions in each set of time domain transmission positions of the second synchronization signal;

[0276] The index corresponding to the transmission mode of multiple time domain transmission positions corresponding to the same transmission position in different sets of time domain transmission positions within each transmission period of the second synchronization signal.

[0277] Optionally, the frequency domain information includes at least one of the following: frequency point information and bandwidth information.

[0278] Optionally, the time domain information includes at least one of the following:

[0279] The first time-domain position information, where the first time-domain position information includes at least one of start time-domain position information and end time-domain position information;

[0280] Listening time window position information;

[0281] Period information.

[0282] Optionally, the first synchronization information includes at least one of the following:

[0283] The index of a frequency point in the second frequency point group;

[0284] The frequency point index set or frequency point index set identifier of the second frequency point group;

[0285] The index of a frequency point in the frequency point index set of the second frequency point group;

[0286] The first index, where the first index is used to indicate at least one bandwidth information in the bandwidth information set of the second synchronization signal;

[0287] The first time offset information, where the first time offset information includes the offset value between the second time-domain position information and the first time-domain position information;

[0288] The third time offset information, where the third time offset information includes the offset value between the second time-domain position information and the start position of the time-domain listening window of the second synchronization signal;

[0289] The first listening window length;

[0290] The second listening window length;

[0291] The second index, where the second index is used to indicate at least one period length in the period length set;

[0292] Wherein, the second frequency point group is used to transmit the second synchronization signal.

[0293] Optionally, the first configuration information of the first synchronization signal includes at least one of the following: the candidate frequency point set of the first frequency point group; frequency domain bandwidth; time domain period; signal waveform; sequence form; information block size; the manner of carrying the first synchronization information; transmission manner;

[0294] Wherein, the first frequency point group is used to transmit the first synchronization signal.

[0295] Optionally, the second configuration information of the second synchronization signal includes at least one of the following: the candidate frequency point set of the second frequency point group; frequency domain bandwidth; time domain length; time domain period; signal waveform; sequence form; information block size; transmission manner.

[0296] Optionally, the first synchronization signal is associated with the second synchronization signal, and the association relationship between the first synchronization signal and the second synchronization signal includes at least one of the following:

[0297] The association relationship between the first frequency point group and the second frequency point group, where the first frequency point group is used to transmit the first synchronization signal, and the second frequency point group is used to transmit the second synchronization signal;

[0298] The association relationship between the frequency point of the first synchronization signal and the frequency point of the second synchronization signal;

[0299] The association relationship between the frequency point bandwidth of the first synchronization signal and the frequency point bandwidth of the second synchronization signal;

[0300] The association relationship between the transmission mode of the first synchronization signal and the transmission mode of the second synchronization signal;

[0301] The time offset information between the first synchronization signal and the second synchronization signal.

[0302] Optionally, the first synchronization signal and the second synchronization signal are time-division multiplexed or frequency-division multiplexed.

[0303] In the method for transmitting a synchronization signal provided in the embodiments of the present application, the execution subject may be a synchronization signal transmission device. In the embodiments of the present application, taking the synchronization signal transmission device as the execution subject of the synchronization signal transmission method as an example, the synchronization signal transmission device provided in the embodiments of the present application is described.

[0304] Referring to Figure 6 , the embodiments of the present application further provide a synchronization signal transmission device. As shown in Figure 6 , the synchronization signal transmission device 600 includes:

[0305] A detection module 601, configured to detect a first synchronization signal based on a first mode and obtain first synchronization information;

[0306] A determination module 602, configured to determine second synchronization information associated with a second synchronization signal based on the first synchronization information;

[0307] The detection module 601 is further configured to detect the second synchronization signal based on the second synchronization information and a second mode;

[0308] Wherein, the peak power consumption corresponding to the first mode is less than the peak power consumption corresponding to the second mode.

[0309] Optionally, the first synchronization signal adopts any one of the following waveforms or modulation methods: amplitude shift keying (ASK); frequency shift keying (FSK); on-off keying (OOK) superimposed on orthogonal frequency division multiplexing (OFDM); OFDM.

[0310] Optionally, the first synchronization information is carried by any of the following methods:

[0311] At least one common sequence;

[0312] A part of the first synchronization information is carried by at least one common sequence, and another part of the first synchronization information is carried by at least one information-carrying block, where the at least one information-carrying block includes a Cyclic Redundancy Check (CRC).

[0313] Optionally, the first synchronization signal is a periodic signal, and each transmission period includes at least one set of time-domain transmission positions, and each set of time-domain transmission positions includes a group of time-domain transmission positions; wherein, the first synchronization signal satisfies at least one of the following:

[0314] The transmission method of multiple time-domain transmission positions within each set of time-domain transmission positions is the first transmission method;

[0315] The transmission method of multiple time-domain transmission positions corresponding to the same transmission position within different sets of time-domain transmission positions in each transmission period is the second transmission method;

[0316] Wherein, the first transmission method includes any one of the following: transmitting the same content and using the same beam for transmission; transmitting the same content and using beam scanning for transmission; transmitting different contents and using the same beam for transmission; transmitting different contents and using beam scanning for transmission;

[0317] The second transmission method includes any one of the following: transmitting the same content and using the same beam for transmission; transmitting different contents and using the same beam for transmission.

[0318] Optionally, the second synchronization signal is a periodic signal, and each transmission period includes at least one set of time-domain transmission positions, and each set of time-domain transmission positions includes a group of time-domain transmission positions; wherein, the second synchronization signal satisfies at least one of the following:

[0319] The transmission method of multiple time-domain transmission positions within each set of time-domain transmission positions is the third transmission method;

[0320] The transmission method of multiple time-domain transmission positions corresponding to the same transmission position within different sets of time-domain transmission positions in each transmission period is the fourth transmission method;

[0321] Wherein, the third transmission method includes any one of the following: transmitting the same content and using the same beam for transmission; transmitting the same content and using beam scanning for transmission; transmitting different contents and using the same beam for transmission; transmitting different contents and using beam scanning for transmission;

[0322] The fourth transmission mode includes any one of the following: transmitting the same content using the same beam; transmitting different content using the same beam.

[0323] Optionally, the second synchronization information includes at least one of the following:

[0324] Transmission configuration information;

[0325] Frequency domain information;

[0326] Time domain information.

[0327] Optionally, the transmission configuration information includes at least one of the following:

[0328] The number of sets of time domain transmission positions included in one transmission period;

[0329] The number of time domain transmission positions included in each set of time domain transmission positions;

[0330] The transmission mode of multiple time domain transmission positions in each set of time domain transmission positions;

[0331] The transmission mode of multiple time domain transmission positions corresponding to the same transmission position in different sets of time domain transmission positions in each transmission period.

[0332] Optionally, the first synchronization information includes at least one of the following:

[0333] The index corresponding to the set of time domain transmission positions included in one transmission period of the second synchronization signal;

[0334] The index corresponding to the number of time domain transmission positions included in each set of time domain transmission positions of the second synchronization signal;

[0335] The index corresponding to the transmission mode of multiple time domain transmission positions in each set of time domain transmission positions of the second synchronization signal;

[0336] The index corresponding to the transmission mode of multiple time domain transmission positions corresponding to the same transmission position in different sets of time domain transmission positions in each transmission period of the second synchronization signal.

[0337] Optionally, the frequency domain information includes at least one of the following: frequency point information and bandwidth information.

[0338] Optionally, the determining module 602 is specifically configured to perform any one of the following;

[0339] When one frequency point in the first frequency point group is uniquely associated with one frequency point in the second frequency point group, determining the frequency domain information based on the index of one frequency point in the second frequency point group included in the first synchronization information;

[0340] When a frequency point in the first frequency point group is uniquely associated with a frequency point in a second frequency point group, determine the frequency point information based on the frequency point where the first synchronization signal corresponding to the first synchronization information is located;

[0341] When a frequency point in the first frequency point group is uniquely associated with at least two frequency points in a second frequency point group, determine the frequency point information based on the frequency point index set or the frequency point index set identifier of the second frequency point group included in the first synchronization information and the index of a frequency point in the frequency point index set;

[0342] When a frequency point in the first frequency point group is uniquely associated with at least two frequency points in a second frequency point group, determine the frequency point information based on the index of a frequency point in the frequency point index set of the second frequency point group included in the first synchronization information;

[0343] Wherein, the first frequency point group is used to transmit the first synchronization signal, and the second frequency point group is used to transmit the second synchronization signal.

[0344] Optionally, the determining module 602 is specifically configured to determine the bandwidth information based on the first index included in the first synchronization information;

[0345] Wherein, the first index is used to indicate at least one bandwidth information in the bandwidth information set of the second synchronization signal.

[0346] Optionally, the time domain information includes at least one of the following:

[0347] First time domain position information, the first time domain position information includes at least one of start time domain position information and end time domain position information;

[0348] Listening time window position information;

[0349] Period information.

[0350] Optionally, the determining module 602 is specifically configured to perform at least one of the following;

[0351] Determine the first time domain position information based on the first time offset information included in the first synchronization information, where the first time offset information includes the offset value between the second time domain position information and the first time domain position information;

[0352] Determine the first time domain position information based on the second time domain position information and the second time offset information, where the second time offset information is based on protocol agreement or pre-configured by the network side device, and the second time offset information includes the offset value between the second time domain position information and the first time domain position information;

[0353] Wherein, the second time domain position information includes at least one of the start time domain position and the end time domain position of the first synchronization signal.

[0354] Optionally, the determining module 602 is specifically configured to perform any one of the following:

[0355] Determine the listening time window position information based on the third time offset information and the first listening window length;

[0356] Determine the listening time window position information based on the fourth time offset information and the second listening window length;

[0357] Wherein, the third time offset information is included in the first synchronization information, and the third time offset information includes an offset value between the second time domain position information and the start position of the time domain listening window of the second synchronization signal. The first listening window length is agreed by the protocol or pre-configured by the network side device or included in the first synchronization information; the fourth time offset information is agreed by the protocol or pre-configured by the network side device, and the fourth time offset information includes an offset value between the second time domain position information and the start position of the time domain listening window of the second synchronization signal, and the second listening window length is included in the first synchronization information.

[0358] Optionally, the determining module 602 is specifically configured to perform any one of the following;

[0359] Determine the period information based on the second index, where the second index is used to indicate at least one period length in the set of period lengths;

[0360] Determine the period information based on the period length of the first synchronization signal corresponding to the first synchronization information.

[0361] Optionally, the first configuration information of the first synchronization signal includes at least one of the following: a candidate frequency point set of the first frequency point group; frequency domain bandwidth; time domain period; signal waveform; sequence form; information block size; the manner of carrying the first synchronization information; transmission manner.

[0362] Optionally, the second configuration information of the second synchronization signal includes at least one of the following: a candidate frequency point set of the second frequency point group; frequency domain bandwidth; time domain length; time domain period; signal waveform; sequence form; information block size; transmission manner.

[0363] Optionally, the first synchronization signal is associated with the second synchronization signal, and the association relationship between the first synchronization signal and the second synchronization signal includes at least one of the following:

[0364] The association relationship between the first frequency point group and the second frequency point group, where the first frequency point group is used to transmit the first synchronization signal, and the second frequency point group is used to transmit the second synchronization signal;

[0365] The correlation relationship between the frequency point of the first synchronization signal and the frequency point of the second synchronization signal;

[0366] The correlation relationship between the frequency bandwidth of the first synchronization signal and the frequency bandwidth of the second synchronization signal;

[0367] The correlation relationship between the transmission mode of the first synchronization signal and the transmission mode of the second synchronization signal;

[0368] The time offset information between the first synchronization signal and the second synchronization signal.

[0369] Optionally, the first synchronization signal and the second synchronization signal are time-division multiplexed or frequency-division multiplexed.

[0370] Referring to Figure 7 , an embodiment of the present application further provides a synchronization signal transmission device, as Figure 7 shown. The synchronization signal transmission device 700 includes:

[0371] A sending module 701, configured to send a first synchronization signal and a second synchronization signal;

[0372] Wherein, the first synchronization signal carries first synchronization information, and the first synchronization information is used to determine the second synchronization information for detecting the second synchronization signal.

[0373] Optionally, the first synchronization signal adopts any one of the following waveforms or modulation methods: amplitude shift keying ASK; frequency shift keying FSK; on-off keying OOK superimposed on orthogonal frequency division multiplexing OFDM; OFDM.

[0374] Optionally, the first synchronization information is carried in any one of the following ways:

[0375] At least one common sequence;

[0376] A part of the first synchronization information is carried by at least one common sequence, and another part of the first synchronization information is carried by at least one information carrying block, and the at least one information carrying block includes cyclic redundancy check CRC.

[0377] Optionally, the first synchronization signal is a periodic signal, and each transmission period includes at least one set of time-domain transmission positions, and each set of time-domain transmission positions includes a group of time-domain transmission positions; wherein, the first synchronization signal satisfies at least one of the following:

[0378] The transmission mode of multiple time-domain transmission positions within each set of time-domain transmission positions is the first transmission mode;

[0379] The transmission mode of multiple time-domain transmission positions corresponding to the same transmission position within different sets of time-domain transmission positions in each transmission period is the second transmission mode;

[0380] Wherein, the first transmission mode includes any one of the following: transmitting the same content and using the same beam for transmission; transmitting the same content and using beam scanning for transmission; transmitting different contents and using the same beam for transmission; transmitting different contents and using beam scanning for transmission;

[0381] The second transmission mode includes any one of the following: transmitting the same content and using the same beam for transmission; transmitting different contents and using the same beam for transmission.

[0382] Optionally, the second synchronization signal is a periodic signal, and each transmission period includes at least one set of time-domain transmission positions, and each set of time-domain transmission positions includes a group of time-domain transmission positions; wherein, the second synchronization signal satisfies at least one of the following:

[0383] The transmission mode of multiple time-domain transmission positions within each set of time-domain transmission positions is the third transmission mode;

[0384] The transmission mode of multiple time-domain transmission positions corresponding to the same transmission position within different sets of time-domain transmission positions in each transmission period is the fourth transmission mode;

[0385] Wherein, the third transmission mode includes any one of the following: transmitting the same content and using the same beam for transmission; transmitting the same content and using beam scanning for transmission; transmitting different contents and using the same beam for transmission; transmitting different contents and using beam scanning for transmission;

[0386] The fourth transmission mode includes any one of the following: transmitting the same content and using the same beam for transmission; transmitting different contents and using the same beam for transmission.

[0387] Optionally, the second synchronization information includes at least one of the following:

[0388] Transmission configuration information;

[0389] Frequency domain information;

[0390] Time domain information.

[0391] Optionally, the transmission configuration information includes at least one of the following:

[0392] The number of sets of time-domain transmission positions included in one transmission period;

[0393] The number of time-domain transmission positions included in each set of time-domain transmission positions;

[0394] The transmission mode of multiple time-domain transmission positions in each set of time-domain transmission positions;

[0395] The transmission mode of multiple time-domain transmission positions corresponding to the same transmission position in different sets of time-domain transmission positions within each transmission period.

[0396] Optionally, the first synchronization information includes at least one of the following:

[0397] The index corresponding to the set of time-domain transmission positions included in one transmission period of the second synchronization signal;

[0398] The index corresponding to the number of time-domain transmission positions included in each set of time-domain transmission positions of the second synchronization signal;

[0399] The index corresponding to the transmission mode of multiple time-domain transmission positions in each set of time-domain transmission positions of the second synchronization signal;

[0400] The index corresponding to the transmission mode of multiple time-domain transmission positions corresponding to the same transmission position in different sets of time-domain transmission positions within each transmission period of the second synchronization signal.

[0401] Optionally, the frequency-domain information includes at least one of the following: frequency point information and bandwidth information.

[0402] Optionally, the time-domain information includes at least one of the following:

[0403] First time-domain position information, where the first time-domain position information includes at least one of start time-domain position information and end time-domain position information;

[0404] Monitoring time window position information;

[0405] Period information.

[0406] Optionally, the first synchronization information includes at least one of the following:

[0407] The index of a frequency point in the second frequency point group;

[0408] The set of frequency point indexes or the identification of the set of frequency point indexes of the second frequency point group;

[0409] The index of a frequency point in the set of frequency point indexes of the second frequency point group;

[0410] The first index, where the first index is used to indicate at least one bandwidth information in the set of bandwidth information of the second synchronization signal;

[0411] First time offset information, where the first time offset information includes the offset value between the second time-domain position information and the first time-domain position information;

[0412] The third time offset information, where the third time offset information includes an offset value between the second time domain position information and the start position of the time domain listening window of the second synchronization signal;

[0413] The length of the first listening window;

[0414] The length of the second listening window;

[0415] A second index, where the second index is used to indicate at least one cycle length in a set of cycle lengths;

[0416] Wherein, the second frequency point group is used to transmit the second synchronization signal.

[0417] Optionally, the first configuration information of the first synchronization signal includes at least one of the following: a candidate frequency point set of the first frequency point group; frequency domain bandwidth; time domain period; signal waveform; sequence form; information block size; a manner of carrying the first synchronization information; transmission manner;

[0418] Wherein, the first frequency point group is used to transmit the first synchronization signal.

[0419] Optionally, the second configuration information of the second synchronization signal includes at least one of the following: a candidate frequency point set of the second frequency point group; frequency domain bandwidth; time domain length; time domain period; signal waveform; sequence form; information block size; transmission manner.

[0420] Optionally, the first synchronization signal is associated with the second synchronization signal, and the association relationship between the first synchronization signal and the second synchronization signal includes at least one of the following:

[0421] The association relationship between the first frequency point group and the second frequency point group, where the first frequency point group is used to transmit the first synchronization signal and the second frequency point group is used to transmit the second synchronization signal;

[0422] The association relationship between the frequency point of the first synchronization signal and the frequency point of the second synchronization signal;

[0423] The association relationship between the frequency point bandwidth of the first synchronization signal and the frequency point bandwidth of the second synchronization signal;

[0424] The association relationship between the transmission manner of the first synchronization signal and the transmission manner of the second synchronization signal;

[0425] The time offset information between the first synchronization signal and the second synchronization signal.

[0426] Optionally, the first synchronization signal and the second synchronization signal are time-division multiplexed or frequency-division multiplexed.

[0427] The synchronization signal transmission device in the embodiments of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or other devices other than terminals. Exemplarily, the terminal may include, but is not limited to, the types of the terminal 11 listed above, and other devices may be servers, Network Attached Storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0428] The synchronization signal transmission device provided in the embodiments of the present application can implement Figures 2 to 5 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein again.

[0429] As Figure 8 shown, the embodiments of the present application further provide a communication device 800, including a processor 801 and a memory 802. A program or instruction that can run on the processor 801 is stored on the memory 802. When the program or instruction is executed by the processor 801, it implements each step of the above-mentioned synchronization signal transmission method embodiments and can achieve the same technical effects. To avoid repetition, details are not described herein again.

[0430] The embodiments of the present application further provide a terminal, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the steps in the method embodiments as Figure 2 shown. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiments. Each implementation process and implementation manner of the above method embodiments can be applied to this terminal embodiment and can achieve the same technical effects. Specifically, Figure 9 FIG. is a schematic hardware structure diagram of a terminal for implementing the embodiments of the present application.

[0431] The terminal 900 includes, but is not limited to, at least some components such as a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909, and a processor 910.

[0432] Those skilled in the art can understand that the terminal 900 may further include a power supply (such as a battery) for supplying power to each component. The power supply may be logically connected to the processor 910 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 9 The terminal structure shown in FIG. does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements, which are not described herein again.

[0433] It should be understood that in the embodiments of the present application, the input unit 904 may include a Graphics Processing Unit (GPU) 9041 and a microphone 9042. The graphics processor 9041 processes the image data of static pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of, for example, a liquid crystal display or an organic light emitting diode. The user input unit 907 includes at least one of a touch panel 9071 and other input devices 9072. The touch panel 9071 is also referred to as a touch screen. The touch panel 9071 may include two parts: a touch detection device and a touch controller. The other input devices 9072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be elaborated herein.

[0434] In the embodiments of the present application, after receiving downlink data from a network-side device, the radio frequency unit 901 may transmit it to the processor 910 for processing; in addition, the radio frequency unit 901 may send uplink data to the network-side device. Generally, the radio frequency unit 901 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0435] The memory 909 can be used to store software programs or instructions and various data. The memory 909 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area may store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 909 may include volatile memory or non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static RAM (SRAM), a dynamic RAM (DRAM), a synchronous DRAM (SDRAM), a double data rate SDRAM (DDR SDRAM), an enhanced SDRAM (ESDRAM), a synch link DRAM (SLDRAM), and a direct rambus RAM (DRRAM). The memory 909 in the embodiments of the present application includes but is not limited to these and any other suitable types of memory.

[0436] The processor 910 may include one or more processing units; optionally, the processor 910 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor may not be integrated into the processor 910 either.

[0437] Among them, the radio frequency unit 901 is used to detect a first synchronization signal based on a first mode and obtain first synchronization information;

[0438] The processor 910 is used to determine second synchronization information associated with a second synchronization signal based on the first synchronization information;

[0439] The radio frequency unit 901 is further used to detect the second synchronization signal based on the second synchronization information and a second mode;

[0440] Among them, the peak power consumption corresponding to the first mode is less than the peak power consumption corresponding to the second mode.

[0441] It can be understood that the implementation processes of the various implementation manners mentioned in this embodiment may refer to the relevant descriptions of the method embodiment on the terminal side, and achieve the same or corresponding technical effects. To avoid repetition, they will not be elaborated here.

[0442] The embodiment of the present application further provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement Figure 5 the steps of the method embodiment as shown. This network-side device embodiment corresponds to the above-mentioned network-side device method embodiment. Each implementation process and implementation manner of the above method embodiment can be applied to this network-side device embodiment, and the same technical effects can be achieved.

[0443] Specifically, the embodiment of the present application further provides a network-side device. As Figure 10 shown, the network-side device 1000 includes: an antenna 1001, a radio frequency device 1002, a baseband device 1003, a processor 1004, and a memory 1005. The antenna 1001 is connected to the radio frequency device 1002. In the uplink direction, the radio frequency device 1002 receives information through the antenna 1001 and sends the received information to the baseband device 1003 for processing. In the downlink direction, the baseband device 1003 processes the information to be sent and sends it to the radio frequency device 1002. The radio frequency device 1002 processes the received information and then sends it out through the antenna 1001.

[0444] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 1003, and the baseband device 1003 includes a baseband processor.

[0445] The baseband device 1003 may include, for example, at least one baseband board, and multiple chips are arranged on the baseband board. As Figure 10 shown, one of the chips is, for example, a baseband processor, which is connected to the memory 1005 through a bus interface to call the program in the memory 1005 and execute the operations of the network-side device shown in the above method embodiments.

[0446] The network-side device may further include a network interface 1006, and this interface is, for example, a Common Public Radio Interface (CPRI).

[0447] Specifically, the network-side device 1000 of the embodiment of the present application further includes: instructions or programs stored on the memory 1005 and executable on the processor 1004. The processor 1004 calls the instructions or programs in the memory 1005 to executeFigure 7 The methods executed by the modules shown achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0448] The embodiments of the present application further provide a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned embodiment of the synchronization signal transmission method is implemented, and the same technical effects can be achieved. To avoid repetition, it will not be elaborated here.

[0449] Among them, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk, or an optical disc, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0450] The embodiments of the present application further provide a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement each process of the above-mentioned embodiment of the synchronization signal transmission method, and the same technical effects can be achieved. To avoid repetition, it will not be elaborated here.

[0451] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system chip, a chip system, or a system-on-chip, etc.

[0452] The embodiments of the present application further provide a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement each process of the above-mentioned embodiment of the synchronization signal transmission method, and the same technical effects can be achieved. To avoid repetition, it will not be elaborated here.

[0453] The embodiments of the present application further provide a wireless communication system, including: a terminal and a network-side device. The terminal can be used to execute the steps of the synchronization signal transmission method on the terminal side as described above, and the network-side device can be used to execute the steps of the synchronization signal transmission method on the network-side device as described above.

[0454] It should be noted that in this text, the terms "including", "comprising", or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device that includes a series of elements not only includes those elements but also other elements not explicitly listed, or elements that are inherent to such a process, method, article, or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article, or device that includes such an element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0455] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described method of the embodiments can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, it can also be implemented by hardware. This computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions for causing a terminal or a network-side device to execute the methods described in the various embodiments of the present application.

[0456] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Those of ordinary skill in the art, under the inspiration of the present application and without departing from the spirit and scope protected by the claims of the present application, can also make many forms of embodiments, and these embodiments are all within the protection scope of the present application.

Claims

1. A synchronous signal transmission method, characterized in that, including: The terminal detects a first synchronization signal based on a first mode to obtain first synchronization information; The terminal determines second synchronization information associated with a second synchronization signal based on the first synchronization information; The terminal detects the second synchronization signal based on the second synchronization information and a second mode; wherein, the peak power consumption corresponding to the first mode is less than the peak power consumption corresponding to the second mode.

2. The method according to claim 1, characterized in that, The first synchronization signal adopts any one of the following waveforms or modulation methods: amplitude shift keying (ASK); frequency shift keying (FSK); on-off keying (OOK) superimposed on orthogonal frequency division multiplexing (OFDM); OFDM.

3. The method according to claim 1 or 2, characterized in that, The first synchronization information is carried through any one of the following methods: at least one common sequence; a part of the first synchronization information is carried by at least one common sequence, and another part of the first synchronization information is carried by at least one information carrying block, and the at least one information carrying block includes cyclic redundancy check (CRC).

4. The method according to any one of claims 1 to 3, characterized in that The first synchronization signal is a periodic signal, and each transmission period includes at least one set of time domain transmission positions, and each set of time domain transmission positions includes a group of time domain transmission positions; wherein, the first synchronization signal satisfies at least one of the following: The transmission methods of multiple time domain transmission positions within each set of time domain transmission positions are the first transmission method; The transmission methods of multiple time domain transmission positions corresponding to the same transmission position within different sets of time domain transmission positions in each transmission period are the second transmission method; wherein, the first transmission method includes any one of the following: the transmission content is the same and is transmitted using the same beam; the transmission content is the same and is transmitted using a beam scanning method; the transmission content is different and is transmitted using the same beam; the transmission content is different and is transmitted using a beam scanning method; The second transmission method includes any one of the following: the transmission content is the same and is transmitted using the same beam; the transmission content is different and is transmitted using the same beam.

5. The method according to any one of claims 1 to 4, characterized in that, The second synchronization signal is a periodic signal, and each transmission period includes at least one set of time domain transmission positions, and each set of time domain transmission positions includes a group of time domain transmission positions; wherein, the second synchronization signal satisfies at least one of the following: The transmission methods of multiple time domain transmission positions within each set of time domain transmission positions are the third transmission method; The transmission methods of multiple time domain transmission positions corresponding to the same transmission position within different sets of time domain transmission positions in each transmission period are the fourth transmission method; wherein, the third transmission method includes any one of the following: the transmission content is the same and is transmitted using the same beam; the transmission content is the same and is transmitted using a beam scanning method; the transmission content is different and is transmitted using the same beam; the transmission content is different and is transmitted using a beam scanning method; The fourth transmission method includes any one of the following: the transmission content is the same and is transmitted using the same beam; the transmission content is different and is transmitted using the same beam.

6. The method according to any one of claims 1 to 5, characterized in that, The second synchronization information includes at least one of the following: transmission configuration information; frequency domain information; time domain information.

7. The method according to claim 6, wherein The transmission configuration information includes at least one of the following: the number of sets of time domain transmission positions included in one transmission period; the number of time domain transmission positions included in each set of time domain transmission positions; The transmission mode of multiple time-domain transmission positions in each set of time-domain transmission positions; The transmission mode of multiple time-domain transmission positions corresponding to the same transmission position in different sets of time-domain transmission positions within each transmission period.

8. The method according to claim 7, wherein The first synchronization information includes at least one of the following: The index corresponding to the set of time-domain transmission positions included in one transmission period of the second synchronization signal; The index corresponding to the number of time-domain transmission positions included in each set of time-domain transmission positions of the second synchronization signal; The index corresponding to the transmission mode of multiple time-domain transmission positions in each set of time-domain transmission positions of the second synchronization signal; The index corresponding to the transmission mode of multiple time-domain transmission positions corresponding to the same transmission position in different sets of time-domain transmission positions within each transmission period of the second synchronization signal.

9. The method according to claim 6, wherein The second synchronization information determined by the terminal based on the first synchronization information and associated with the second synchronization signal includes any one of the following: When one frequency point of the first frequency point group is uniquely associated with one frequency point of the second frequency point group, the terminal determines the frequency point information based on the index of one frequency point of the second frequency point group included in the first synchronization information; When one frequency point of the first frequency point group is uniquely associated with one frequency point of the second frequency point group, the terminal determines the frequency point information based on the frequency point where the first synchronization signal corresponding to the first synchronization information is located; When one frequency point of the first frequency point group is uniquely associated with at least two frequency points of the second frequency point group, the terminal determines the frequency point information based on the set of frequency point indexes or the set identifier of the frequency point indexes of the second frequency point group included in the first synchronization information and the index of one frequency point in the set of frequency point indexes; When one frequency point of the first frequency point group is uniquely associated with at least two frequency points of the second frequency point group, the terminal determines the frequency point information based on the index of one frequency point in the set of frequency point indexes of the second frequency point group included in the first synchronization information; Wherein, the first frequency point group is used to transmit the first synchronization signal, and the second frequency point group is used to transmit the second synchronization signal.

10. The method according to claim 6, characterized in that The second synchronization information determined by the terminal based on the first synchronization information and associated with the second synchronization signal includes: The terminal determines the bandwidth information based on the first index included in the first synchronization information; Wherein, the first index is used to indicate at least one bandwidth information in the set of bandwidth information of the second synchronization signal.

11. The method according to claim 6, wherein The time-domain information includes at least one of the following: First time-domain position information, which includes at least one of start time-domain position information and end time-domain position information; Monitoring time window position information; Period information.

12. The method according to claim 11, characterized in that, The second synchronization information determined by the terminal based on the first synchronization information and associated with the second synchronization signal includes at least one of the following; The terminal determines the first time-domain position information based on the first time offset information included in the first synchronization information, and the first time offset information includes the offset value between the second time-domain position information and the first time-domain position information. The terminal determines the first time domain position information based on the second time domain position information and the second time offset information. The second time offset information is based on protocol agreements or pre-configured by the network side device, and the second time offset information includes the offset value between the second time domain position information and the first time domain position information; Wherein, the second time domain position information includes at least one of the start time domain position and the end time domain position of the first synchronization signal.

13. The method according to claim 11, wherein The terminal determines the second synchronization information associated with the second synchronization signal based on the first synchronization information, including any one of the following: The terminal determines the listening time window position information based on the third time offset information and the first listening window length; The terminal determines the listening time window position information based on the fourth time offset information and the second listening window length; Wherein, the third time offset information is included in the first synchronization information, and the third time offset information includes the offset value between the second time domain position information and the start position of the time domain listening window of the second synchronization signal. The first listening window length is based on protocol agreements or pre-configured by the network side device or included in the first synchronization information; the fourth time offset information is based on protocol agreements or pre-configured by the network side device, and the fourth time offset information includes the offset value between the second time domain position information and the start position of the time domain listening window of the second synchronization signal. The second listening window length is included in the first synchronization information.

14. The method according to claim 11, wherein The terminal determines the second synchronization information associated with the second synchronization signal based on the first synchronization information, including any one of the following: The terminal determines the period information based on the second index, and the second index is used to indicate at least one period length in the set of period lengths; The terminal determines the period information based on the period length of the first synchronization signal corresponding to the first synchronization information.

15. The method according to any one of claims 1 to 14, characterized in that, The first configuration information of the first synchronization signal includes at least one of the following: the candidate frequency point set of the first frequency point group; the frequency domain bandwidth; the time domain period; the signal waveform; the sequence form; the information block size; the manner of carrying the first synchronization information; the transmission manner; Alternatively, the second configuration information of the second synchronization signal includes at least one of the following: the candidate frequency point set of the second frequency point group; the frequency domain bandwidth; the time domain length; the time domain period; the signal waveform; the sequence form; the information block size; the transmission manner.

16. The method according to any one of claims 1 to 15, characterized in that, The first synchronization signal is associated with the second synchronization signal, and the association relationship between the first synchronization signal and the second synchronization signal includes at least one of the following: The association relationship between the first frequency point group and the second frequency point group, where the first frequency point group is used to transmit the first synchronization signal and the second frequency point group is used to transmit the second synchronization signal; The association relationship between the frequency point of the first synchronization signal and the frequency point of the second synchronization signal; The association relationship between the frequency domain bandwidth of the first synchronization signal and the frequency domain bandwidth of the second synchronization signal; The association relationship between the transmission manner of the first synchronization signal and the transmission manner of the second synchronization signal; The time offset information between the first synchronization signal and the second synchronization signal.

17. A method for synchronizing signal transmission, characterized in that, Including: The network side device sends the first synchronization signal and the second synchronization signal; Among them, the first synchronization signal carries first synchronization information, and the first synchronization information is used to determine second synchronization information for detecting the second synchronization signal.

18. The method according to claim 17, characterized in that, The first synchronization signal adopts any one of the following waveforms or modulation methods: amplitude shift keying (ASK); frequency shift keying (FSK); on-off keying (OOK) superimposed on orthogonal frequency division multiplexing (OFDM); OFDM.

19. The method according to claim 17 or 18, characterized in that, The first synchronization information is carried by any one of the following methods: At least one common sequence; A part of the first synchronization information is carried by at least one common sequence, and another part of the first synchronization information is carried by at least one information-carrying block, and the at least one information-carrying block includes cyclic redundancy check (CRC).

20. The method according to any one of claims 17 to 19, characterized in that, The first synchronization signal is a periodic signal, and each transmission period contains at least one set of time-domain transmission positions, and each set of time-domain transmission positions contains a group of time-domain transmission positions; among them, the first synchronization signal satisfies at least one of the following: The transmission methods of multiple time-domain transmission positions within each set of time-domain transmission positions are the first transmission method; The transmission methods of multiple time-domain transmission positions corresponding to the same transmission position in different sets of time-domain transmission positions within each transmission period are the second transmission method; Among them, the first transmission method includes any one of the following: the transmission contents are the same and are transmitted using the same beam; the transmission contents are the same and are transmitted using a beam scanning method; the transmission contents are different and are transmitted using the same beam; the transmission contents are different and are transmitted using a beam scanning method; The second transmission method includes any one of the following: the transmission contents are the same and are transmitted using the same beam; the transmission contents are different and are transmitted using the same beam.

21. The method according to any one of claims 17 to 20, characterized in that, The second synchronization signal is a periodic signal, and each transmission period contains at least one set of time-domain transmission positions, and each set of time-domain transmission positions contains a group of time-domain transmission positions; among them, the second synchronization signal satisfies at least one of the following: The transmission methods of multiple time-domain transmission positions within each set of time-domain transmission positions are the third transmission method; The transmission methods of multiple time-domain transmission positions corresponding to the same transmission position in different sets of time-domain transmission positions within each transmission period are the fourth transmission method; Among them, the third transmission method includes any one of the following: the transmission contents are the same and are transmitted using the same beam; the transmission contents are the same and are transmitted using a beam scanning method; the transmission contents are different and are transmitted using the same beam; the transmission contents are different and are transmitted using a beam scanning method; The fourth transmission method includes any one of the following: the transmission contents are the same and are transmitted using the same beam; the transmission contents are different and are transmitted using the same beam.

22. The method according to any one of claims 17 to 21, characterized in that The second synchronization information includes at least one of the following: Transmission configuration information; Frequency domain information; Time domain information.

23. The method according to claim 22, wherein The transmission configuration information includes at least one of the following: The number of sets of time-domain transmission positions included in one transmission period; The number of time-domain transmission positions included in each set of time-domain transmission positions; The transmission methods of multiple time-domain transmission positions in each set of time-domain transmission positions; The transmission methods of multiple time-domain transmission positions corresponding to the same transmission position in different sets of time-domain transmission positions within each transmission period.

24. The method according to claim 23, wherein The first synchronization information includes at least one of the following: Indices corresponding to the set of time-domain transmission positions included in one transmission period of the second synchronization signal; Indices corresponding to the number of time-domain transmission positions included in each set of time-domain transmission positions of the second synchronization signal; Indices corresponding to the transmission modes of the multiple time-domain transmission positions in each set of time-domain transmission positions of the second synchronization signal; Indices corresponding to the transmission modes of the multiple time-domain transmission positions at the same transmission position in different sets of time-domain transmission positions within each transmission period of the second synchronization signal.

25. The method according to claim 22, wherein, The time-domain information includes at least one of the following: First time-domain position information, where the first time-domain position information includes at least one of start time-domain position information and end time-domain position information; Listening time window position information; Period information.

26. The method according to any one of claims 22 to 25, characterized in that, The first synchronization information includes at least one of the following: Index of a frequency point in a second frequency point group; Set of frequency point indices or frequency point index set identifier of the second frequency point group; Index of a frequency point in the set of frequency point indices of the second frequency point group; First index, where the first index is used to indicate at least one bandwidth information in the bandwidth information set of the second synchronization signal; First time offset information, where the first time offset information includes the offset value between the second time-domain position information and the first time-domain position information; Third time offset information, where the third time offset information includes the offset value between the second time-domain position information and the start position of the time-domain listening window of the second synchronization signal; First listening window length; Second listening window length; Second index, where the second index is used to indicate at least one period length in the set of period lengths; Wherein, the second frequency point group is used to transmit the second synchronization signal.

27. The method according to any one of claims 17 to 26, characterized in that, The first configuration information of the first synchronization signal includes at least one of the following: candidate frequency point set of the first frequency point group; frequency domain bandwidth; time domain period; signal waveform; sequence form; information block size; manner of carrying the first synchronization information; transmission mode; wherein, the first frequency point group is used to transmit the first synchronization signal; Alternatively, the second configuration information of the second synchronization signal includes at least one of the following: candidate frequency point set of the second frequency point group; frequency domain bandwidth; time domain length; time domain period; signal waveform; sequence form; information block size; transmission mode.

28. The method according to any one of claims 17 to 27, characterized in that, The first synchronization signal is associated with the second synchronization signal, and the association relationship between the first synchronization signal and the second synchronization signal includes at least one of the following: Association relationship between the first frequency point group and the second frequency point group, where the first frequency point group is used to transmit the first synchronization signal and the second frequency point group is used to transmit the second synchronization signal; Association relationship between the frequency point of the first synchronization signal and the frequency point of the second synchronization signal; Association relationship between the frequency domain bandwidth of the first synchronization signal and the frequency domain bandwidth of the second synchronization signal; Association relationship between the transmission mode of the first synchronization signal and the transmission mode of the second synchronization signal; Time offset information between the first synchronization signal and the second synchronization signal.

29. A synchronous signal transmission device, characterized in that, Comprising: A detection module, configured to detect a first synchronization signal based on a first mode and obtain first synchronization information; A determination module, configured to determine second synchronization information associated with a second synchronization signal based on the first synchronization information; The detection module is further configured to detect the second synchronization signal based on the second synchronization information and a second mode; Wherein, the peak power consumption corresponding to the first mode is less than the peak power consumption corresponding to the second mode.

30. The device according to claim 29, wherein The first synchronization signal adopts any one of the following waveforms or modulation methods: amplitude shift keying (ASK); frequency shift keying (FSK); on-off keying (OOK) superimposed on orthogonal frequency division multiplexing (OFDM); OFDM.

31. A synchronization signal transmission device, characterized in that, Comprising: A sending module, configured to send a first synchronization signal and a second synchronization signal; Wherein, the first synchronization signal carries first synchronization information, and the first synchronization information is used to determine second synchronization information for detecting the second synchronization signal.

32. The device according to claim 31, wherein The first synchronization signal adopts any one of the following waveforms or modulation methods: amplitude shift keying (ASK); frequency shift keying (FSK); on-off keying (OOK) superimposed on orthogonal frequency division multiplexing (OFDM); OFDM.

33. A terminal, characterized in that, Comprising a processor and a memory, where the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the synchronization signal transmission method according to any one of claims 1 to 16 are implemented.

34. A network-side device, characterized in that, Comprising a processor and a memory, where the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the synchronization signal transmission method according to any one of claims 17 to 28 are implemented.

35. A readable storage medium, characterized in that, A program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the synchronization signal transmission method according to any one of claims 1 to 28 are implemented.

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