A wake-up signal transmission method and apparatus

Abstract

The application discloses a wake-up signal sending method and device to solve the problem of how a UE accurately identifies information in a WUR signal received by a wake-up circuit. The method can include: designing a first time-domain resource for transmitting a wake-up signal in the following format: the first time-domain resource includes N first time units of a preset length, and one wake-up signal occupies at least one first time unit of the N first time units of the preset length, N is a positive integer, and the boundary position of the first time unit is determined according to the time-domain position of a synchronization signal, so as to determine the boundary position of the wake-up signal, and facilitate the terminal to prepare to identify the wake-up signal. The application scheme can be widely applied to the fields of communication technology, artificial intelligence, Internet of Vehicles, smart home networking and the like.

Description

[0001] This application claims priority to Chinese patent application filed on September 28, 2021, with application number 202111146311.5 and entitled "A Frame Structure Design Method for WUR", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and in particular to a method and apparatus for sending a wake-up signal. Background Technology

[0003] Currently, when the user equipment (UE) is in idle / inactive state, the UE calculates a paging frame (PF) and the position of a paging occasion (PO) within the PF based on its UE ID, and receives the paging within the PO. The same receiving module is used whether the UE is performing the above paging reception procedure in idle / inactive state or receiving data in connected state.

[0004] To further reduce UE power consumption, a separate low-power circuit can be used to receive paging-related messages. This circuit can be called a wake-up circuit, a low-power circuit, or other names. The signal received by the wake-up circuit can be called a wake-up signal / radio (WUS / WUR). How the UE can accurately identify the information in the WUR signal received by the wake-up circuit is a problem that urgently needs to be solved. Summary of the Invention

[0005] This application provides a wake-up signal transmission method and apparatus to solve the problem of how the UE can accurately identify the information in the WUR signal received by the wake-up circuit.

[0006] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0007] In a first aspect, embodiments of this application provide a wake-up signal transmission method, the method comprising: a terminal receiving a synchronization signal from a network device, and receiving a wake-up signal from the network device on a first time domain resource, the wake-up signal being at least used to indicate paging-related information; wherein the format of the first time domain resource is designed as follows: the first time domain resource includes N first time units of preset length, a wake-up signal occupies at least one of the N first time units of preset length, and the boundary position of the first time unit is determined according to the time domain position of the synchronization signal.

[0008] Accordingly, in a second aspect, embodiments of this application also provide a wake-up signal transmission method, which can be executed by a network device. The method may include: the network device sending a synchronization signal to a terminal, and the network device sending a wake-up signal to the terminal on a first time domain resource, which is at least used to indicate paging-related information; wherein the design of the first time domain resource and the first time unit is as described in the first aspect and will not be repeated.

[0009] Based on the above method, this application defines the time-domain resources used for transmitting wake-up signals and the boundary positions of these time-domain resources. For example, the boundary positions of the time units used for transmitting wake-up signals are determined according to the time-domain position of the synchronization signal, so that the terminal can know the starting position of the wake-up signal and at which time-domain positions the wake-up signal is detected / received. This reduces the number of times the terminal decodes paging-related information (such as paging messages) (i.e., decoding is only attempted at the boundary position of the first time unit, rather than attempting decoding at any symbol position), thereby reducing the false alarm probability of the terminal and avoiding the problem of a high false alarm probability caused by the terminal's existing method of attempting decoding at any symbol position.

[0010] In one possible design, the first time unit comprises multiple symbols, with one symbol corresponding to one coded bit. This allows one symbol to transmit one coded bit, distinguishing it from the format of existing systems (such as NR systems).

[0011] In one possible design, the boundary position of the first time unit is determined based on the time domain position of the synchronization signal, including: the boundary position of the first time unit is determined based on the start position of the synchronization signal or the boundary position of the first time unit is determined based on the end position of the synchronization signal. Based on this possible design, the boundary position of the first time unit can be determined effectively and flexibly based on the time domain position of the synchronization signal, simplifying the system design.

[0012] In one possible design, the first time unit is the first time unit within the first time domain resource. The boundary position of the first time unit is determined based on the start position of the synchronization signal, including: the start position of the first time unit is a position after the start position of the synchronization signal and at a first preset interval from the start position of the synchronization signal; the boundary position of the first time unit is determined based on the end position of the synchronization signal, including: the start position of the first time unit is the end position of the synchronization signal; or, the start position of the first time unit is a position after the end position of the synchronization signal and at a second preset interval from the end position of the synchronization signal. That is, the boundary position of the first time unit can be designed to overlap with the boundary position of the synchronization signal, or the boundary position of the first time unit can be designed to have a certain interval with the boundary position of the synchronization signal, so that the boundary positions of the first time unit are aligned.

[0013] In one possible design, the wake-up signal includes an index value indicating the first time unit occupied by the wake-up signal, or an index value indicating the start time unit occupied by the wake-up signal. This allows the terminal to determine the current position of the received wake-up signal based on the indication information carried in the wake-up signal, thereby improving the accuracy of reception.

[0014] In one possible design, the terminal receives a wake-up signal from a network device, including: the terminal acquiring a timing index indicating an index value of a first time-domain resource; and receiving the wake-up signal from the network device within a time window based on the timing index and first configuration information for configuring a time window, wherein the time window is included in or encompasses the first time-domain resource. Based on this possible design, the terminal can perform system timing to determine its own time position for receiving the wake-up signal, allowing it to wake up in advance at that time position to prepare for receiving the wake-up signal, thereby improving the accuracy of wake-up signal reception.

[0015] In one possible design, the timing index is determined based on the first information carried in the synchronization signal; or, there is a mapping relationship between the timing index and the synchronization sequence of the synchronization signal, and the timing index is determined based on the mapping relationship and the synchronization sequence of the synchronization signal; or, the timing index is determined based on the second information and the synchronization sequence of the synchronization signal. Based on this possible design, the timing index can be obtained effectively and flexibly, simplifying the system design.

[0016] In one possible design, the timing index is determined based on the second information and the synchronization sequence of the synchronization signal. This includes: the timing index is determined by M1 information bits carried in the synchronization signal and M2 information bits; the second information includes M1 information bits, and there is a mapping relationship between the M2 information bits and the synchronization sequence of the synchronization signal. The M2 information bits are determined based on the synchronization sequence of the synchronization signal, where M1 and M2 are positive integers. Based on this possible design, the timing index can be comprehensively determined based on the information bits in the synchronization signal and the synchronization sequence, simplifying the system design.

[0017] In one possible design, the starting position of the first time-domain resource is the ending position of the synchronization signal; or, the starting position of the first time-domain resource is a position after the ending position of the synchronization signal, at a third preset interval from the ending position of the synchronization signal. The ending position of the first time-domain resource is either the starting position of the next synchronization signal adjacent to the synchronization signal, or the ending position of the first time-domain resource is before the next synchronization signal adjacent to the synchronization signal, at a fourth preset interval from the starting position of the next synchronization signal adjacent to the synchronization signal. This allows for flexible and effective determination of the boundary position of the first time-domain resource.

[0018] In one possible design, the wake-up signal includes a first wake-up signal and a second wake-up signal. The data rate of the first wake-up signal is lower than that of the second wake-up signal, and the number of first time units occupied by the first wake-up signal is greater than that occupied by the second wake-up signal. In this way, the number of time units occupied by wake-up signals with different data rates can be designed as needed, simplifying the system design and meeting the data rate requirements of different terminals.

[0019] In one possible design, the network device sends second configuration information to the terminal for configuring reserved resources. The terminal receives the second configuration information so that it cannot send synchronization signals on the reserved resources according to the second configuration information. The reserved resources are included in the candidate transmission positions of the synchronization signals. The candidate transmission positions of the synchronization signals are determined according to the transmission period of the synchronization signals. This allows the terminal to avoid interference problems caused by sending synchronization signals at the same location as other terminals.

[0020] In one possible design, the waveform of the synchronization signal is the same as that of the wake-up signal; and / or, the modulation method of the synchronization signal is the same as that of the wake-up signal, and the modulation method of the synchronization signal and the wake-up signal is on-off keying (OOK); and / or, the waveforms of the synchronization signal and / or the wake-up signal are OOK. This allows for a flexible and effective design of the waveforms and modulation methods of the synchronization signal and wake-up signal.

[0021] In one possible design, the wake-up signal indicates one or more terminals that need to receive paging, including the terminal itself. The method further includes: the terminal receiving first information from a network device and / or performing random access, wherein the first information includes one or more of the following: downlink control information (DCI), a paging message, and a paging early indication (PEI). This facilitates terminal access to the network and communication with the network device.

[0022] In one possible design, the terminal includes a first module and a second module. The terminal receives synchronization and wake-up signals through the first module, and receives first information and / or performs random access through the second module. The terminal receives synchronization and wake-up signals through a first link, the frequency domain resources corresponding to the first link including first frequency domain resources; the terminal receives first information from network devices and / or performs random access through the second link, the frequency domain resources corresponding to the second link including second frequency domain resources. In this way, the terminal can be designed to perform different functions through different modules / links, deploying modules and links for different functions independently. Different modules / links can be used to perform tasks as needed, saving system overhead and facilitating the management of different communication processes.

[0023] In one possible design, the first frequency domain resources and the second frequency domain resources may be the same or different. In this way, the frequency domain resources corresponding to the first link and the second link can be designed flexibly and effectively to achieve same-frequency transmission or different-frequency transmission.

[0024] Thirdly, this application provides a communication device, which can be a terminal, a chip or system-on-a-chip in a terminal, or a functional module in a terminal for implementing the method described in the first aspect or any possible design of the first aspect. Alternatively, the communication device can be a network device, a chip or system-on-a-chip in a network device, or a functional module in a network device for implementing the method described in the second aspect or any possible design of the second aspect. This communication device can implement the functions performed by the terminal or network device in the above aspects or possible designs, and these functions can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. For example, the communication device may include a transmitting unit and a receiving unit; furthermore, the communication device may also include a processing unit.

[0025] One possible design is a sending unit for sending a first message to a network device on a first random access resource.

[0026] The receiving unit is used for the terminal to receive a synchronization signal from the network device and to receive a wake-up signal from the network device on a first time domain resource, which is used to indicate paging-related information. The format of the first time domain resource is designed as follows: the first time domain resource includes N first time units of preset length, and a wake-up signal occupies at least one of the N first time units of preset length. The boundary position of the first time unit is determined according to the time domain position of the synchronization signal.

[0027] Another possible design is a transmitting unit used to send a synchronization signal to the terminal and a wake-up signal to the terminal on a first time domain resource, which is used to indicate paging-related information.

[0028] Specifically, the design of the first time domain resource and the first time unit can refer to the first aspect or the second aspect or any possible design of the first aspect or any possible design of the second aspect. At the same time, the execution actions of each unit of the communication device can refer to the first aspect or any possible design of the first aspect or the second aspect or any possible design of the second aspect, and will not be elaborated further.

[0029] Fourthly, a communication device is provided, which can be a terminal or a chip or system-on-a-chip within a terminal. This communication device can implement the functions performed by the terminal in the aforementioned aspects or possible designs, and these functions can be implemented in hardware. Alternatively, the communication device can be a network device or a chip or system-on-a-chip within a network device. This communication device can implement the functions performed by the network device in the aforementioned aspects or possible designs, and these functions can be implemented in hardware. In one possible design, the communication device may include a processor and a communication interface, the processor and the communication interface supporting the communication device in performing the methods described in the first aspect or any possible design of the first aspect, or the second aspect or any possible design of the second aspect. In yet another possible design, the communication device may further include a memory for storing necessary computer execution instructions and data for the communication device. When the communication device is running, the processor executes the computer execution instructions stored in the memory to cause the communication device to perform the wake-up signal transmission method as described in the first aspect or any possible design of the first aspect, or the second aspect or any possible design of the second aspect.

[0030] Fifthly, a computer-readable storage medium is provided, which may be a readable non-volatile storage medium storing instructions that, when executed on a computer, cause the computer to perform the wake-up signal sending method described in the first aspect or any possible design of the first aspect, or in the second aspect or any possible design of the second aspect.

[0031] In a sixth aspect, a computer program product containing instructions is provided, which, when run on a computer, causes the computer to perform the wake-up signal sending method described in the first aspect or any possible design of the first aspect, or in the second aspect or any possible design of the second aspect.

[0032] In a seventh aspect, a communication device is provided, which can be a terminal or a chip or system-on-a-chip in a terminal. The communication device includes one or more processors and one or more memories. The one or more memories are coupled to the one or more processors and are used to store computer program code, which includes computer instructions. When the one or more processors execute the computer instructions, they cause the terminal to perform the wake-up signal transmission method described in the first aspect or any possible design of the first aspect, or in the second aspect or any possible design of the second aspect.

[0033] The technical effects of any of the design methods in aspects four through seven can be found in the first aspect or any possible design of the first aspect, and will not be repeated here.

[0034] Eighthly, embodiments of this application provide a communication system, which may include a terminal and a network device. The terminal may execute the wake-up signal transmission method described in the first aspect or any possible design of the first aspect, and the network device may execute the wake-up signal transmission method described in the second aspect or any possible design of the second aspect. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the terminal's receiving circuit.

[0036] Figure 2 This is a diagram illustrating the wake-up signal.

[0037] Figure 3a This is a schematic diagram of the synchronization signal transmitted along the path.

[0038] Figure 3b A schematic diagram of periodic transmission of synchronization signals;

[0039] Figure 3c This is a schematic diagram of signal transmission;

[0040] Figure 4 A schematic diagram of a communication system provided in an embodiment of this application;

[0041] Figure 5a Schematic diagram of the communication device 500 provided in the embodiments of this application Figure 1 ;

[0042] Figure 5b Schematic diagram of the communication device 500 provided in the embodiments of this application Figure 2 ;

[0043] Figure 6 This is a flowchart of a wake-up signal sending method provided in an embodiment of this application;

[0044] Figures 7a-7h This is a schematic diagram of the WUR frame format provided in an embodiment of this application;

[0045] Figures 8a-8d This is a schematic diagram of the WUR frame format provided in an embodiment of this application;

[0046] Figures 9a-9d This is a schematic diagram of the WUR frame format provided in an embodiment of this application;

[0047] Figures 10a-10f A schematic diagram of a WUR frame format carrying wake-up signals with different data rates, provided for embodiments of this application;

[0048] Figure 10g This is a schematic diagram of different cell synchronization signal transmission provided in an embodiment of this application;

[0049] Figure 11 A schematic diagram of the communication device 110 provided in an embodiment of this application;

[0050] Figure 12 A schematic diagram of a communication device 120 provided in an embodiment of this application;

[0051] Figure 13 This is a schematic diagram of a communication system provided in an embodiment of this application. Detailed Implementation

[0052] Before introducing the embodiments of this application, some terms (such as paging) involved in the embodiments of this application will be explained. It should be noted that the following explanations are for the purpose of making the embodiments of this application easier to understand, and should not be regarded as a limitation on the scope of protection claimed by the embodiments of this application.

[0053] Paging is the process by which network devices periodically send paging messages to terminals in an idle or inactive state to wake them up and return them to a connected state. This process includes: the network device (such as an access network device) calculating the paging frame (PF) corresponding to the terminal and the paging occasion (PO) within the PF; and sending a physical downlink control channel (PDCCH) carrying the paging message to the terminal on the PO corresponding to the terminal. The paging DCI can schedule a physical downlink control channel (PDSCH) carrying the paging message. If the paging DCI indicates that a PDSCH carrying the paging message has been scheduled, the network device sends the PDSCH carrying the paging message at the resource location indicated by the paging DCI. Correspondingly, the terminal monitors the paging DCI on its corresponding PO. If the terminal receives the paging DCI, it receives the PDSCH carrying the paging message based on the received paging DCI. The terminal then determines whether it has been paged based on the PDSCH carrying the paging message. For example, if the paging message received by the terminal carries its own identification information (such as the user equipment identifier (UE ID)), it determines that it has been paged; otherwise, it determines that it has not been paged. If the terminal is paged, it initiates a random access procedure, switches to the connected state, establishes a communication connection with the network device, and then conducts data communication with the network device.

[0054] Currently, both the paging process and the data communication process in connected mode use the same functional module, which can be called the main circuit or the secondary module. However, compared to data communication in connected mode, the paging process may not require as much power consumption, while using the main circuit to perform the paging process may result in higher power consumption. Therefore, to further reduce the terminal's power consumption, a main circuit and a separate low-power circuit can be independently deployed on the terminal. This low-power circuit can receive paging-related information under low power conditions, such as receiving information from network devices that require paging of one or more terminals.

[0055] In this embodiment, the low-power circuit is mainly used to support terminals in idle or inactive states to receive paging-related information. This low-power circuit can be referred to as a wake-up circuit, a low-power circuit, a wake-up signal (WUS) receiver, a wake-up radio (WUR) receiver, a first module, or a first circuit, etc., without limitation. This application uses a wake-up circuit as an example for description, and will not elaborate further. The signal received by the wake-up circuit can be called a WUR signal. The WUR signal can include paging-related signals, such as a wake-up signal and a synchronization signal. The wake-up signal is at least used to indicate paging-related information (such as information about the terminal to be received). The wake-up signal can also be named a WUS signal or a wake-up radio (WUR) signal, etc. Using the wake-up circuit to receive a WUR signal (e.g., a wake-up signal) can be understood as operating on a WUR link, receiving a wake-up signal on a WUR link, or receiving a WUR signal in a first state / first mode, etc.

[0056] In this embodiment, the main circuit is primarily used to support data communication between the terminal in the connected state and the network device. It can also be used to support the terminal accessing the network device, and to support the terminal performing the paging process in existing standards (i.e., receiving paging DCI and paging PDSCH, etc.). The main circuit can be referred to as the second module, the second circuit, or other names. Using the main circuit for data communication can be understood as using the main link for data communication, or performing data communication in the second state / second module, etc.

[0057] In this embodiment, the first state can be understood as the state when the terminal turns on the wake-up circuit and turns off the main circuit. The first state can be called the WUR state, the wake-up state, or other names, without limitation. The first mode can be understood as the first working mode, the WUR mode, the wake-up mode, or the WUR working mode. The first mode can refer to the terminal working in the first state, the terminal working on the WUR link, or the terminal using / utilizing the wake-up circuit, etc.

[0058] In this embodiment, the second state can be understood as the state when the terminal turns off the wake-up circuit and turns on the main circuit. The second state can be called the main state or named other states, without limitation. The second mode can be understood as the second working mode, the main mode, or the main working mode. The second mode can refer to the terminal working in the second state, the terminal working on the main link, or the terminal using / utilizing the main circuit, etc.

[0059] For example, such as Figure 1As shown, the terminal is equipped with a wake-up circuit and a main circuit. When the terminal is in a first state (such as WUR state), idle state, or inactive state, the wake-up circuit is activated (or operational), and the main circuit is deactivated (or inactive). The terminal can use the wake-up circuit to receive wake-up signals. If the terminal detects a wake-up signal to wake itself up, it triggers the activation of the main circuit, putting it in the on state. If the terminal does not detect a wake-up signal, it does not trigger the activation of the main circuit, which remains in the off state. Figure 1 The method shown can reduce the power consumption of the terminal.

[0060] In this embodiment, to reduce the power consumption of the wake-up circuit, the wake-up signal is modulated using binary amplitude shift keying (e.g., on-off keying, OOK). Correspondingly, the wake-up circuit can demodulate the wake-up signal using envelope detection (or a 0 / 1 decision method). When OOK modulation is used, one information bit (or encoded bit) of the wake-up signal corresponds to one symbol. For example, when the information bit is 1, it indicates that a signal is emitted within the length of the symbol corresponding to that information bit (or it can be understood as the signal power within the length of the symbol being non-zero); when the information bit is 0, it indicates that no signal is emitted within the length of the symbol corresponding to that information bit (or it can be understood as the signal power within the length of the symbol being zero). Alternatively, when the information bit is 0, it indicates that a signal is emitted within the length of the symbol corresponding to that information bit (or it can be understood as the signal power within the length of the symbol being non-zero); when the information bit is 1, it indicates that no signal is emitted within the length of the symbol corresponding to that information bit (or it can be understood as the signal power within the length of the symbol being zero).

[0061] It should be understood that the symbols in this application can also be referred to as chips. The length of a symbol can refer to the time length between the start position and the end position of the symbol. The length of a symbol can be pre-configured or pre-defined by the protocol. For example, the length of a symbol can be set to 4 microseconds (µs).

[0062] As shown above, when using a WUR link, wake-up signals are transmitted at the symbol level. To detect the wake-up signal, the boundary positions of the symbols need to be known. The detection of received wake-up signals begins from the symbol boundary positions, checking for signals on the symbols. The detection results for multiple symbols are combined to determine the obtained wake-up signal. Based on the wake-up signal, it is determined whether the device has been paged / woke up. For example, assuming an information bit of 1 indicates a signal and an information bit of 0 indicates no signal, the wake-up signal modulated by OOK is "1010", consisting of 4 coded bits. These 4 coded bits can correspond to... Figure 2The four symbols shown have signal power greater than zero within the length of the first and third symbols from the left, indicating the presence of a signal; these symbols correspond to a coded bit "1". The signal power is zero within the length of the second and fourth symbols, indicating the absence of a signal; these symbols correspond to a coded bit "0". At this point, the terminal can attempt to decode at any symbol position starting from the boundary of the first symbol to obtain the wake-up signal 1010, and then determine whether it has been woken up based on the wake-up signal 1010.

[0063] Optionally, the boundary positions of symbols transmitted on the WUR can be located using a synchronization (sync) signal. This synchronization signal can be used for time synchronization at the terminal. For example, in one possible design, such as... Figure 3a As shown, a synchronization signal is sent along with the wake-up signal, meaning the wake-up signal and synchronization signal are sent together. The start position of the wake-up signal overlaps with the end position of the synchronization signal. After the terminal receives the synchronization signal and uses it to complete time synchronization, it can directly locate the boundary of the symbol containing the wake-up signal and then detect the wake-up signal on the corresponding symbol. In another possible design, such as... Figure 3b As shown, a synchronization signal is periodically sent, and a wake-up signal is sent during the time interval (or multiple symbols) between two adjacent synchronization signals. After the terminal receives the synchronization signal and uses it to complete time synchronization, it can obtain the symbol location, such as the boundary position (or starting position) of the symbol, so as to select the time position for envelope detection (or 0 / 1 decision) based on the boundary position of the symbol, such as making a decision based on the center position of a certain symbol.

[0064] However, during the periodic transmission of synchronization signals, the terminal detects wake-up signals sequentially within the period, starting from its self-identified symbol boundary. This means it attempts to decode at any symbol position, leading to a higher probability of false alarms due to the numerous decoding attempts. For example, as... Figure 3c As shown, assume there are 140 symbols between adjacent synchronization signals: symbols 0-139. The cell includes UE1 and UE2, UE1 is identified as AB, and UE2 is identified as BC. If the base station wants to wake up UE1 in the cell, it will send the wake-up signal "AB" on symbols 112-125, where "A" and "B" occupy multiple symbols. For UE1 and UE2, the following can be used... Figure 3bAs shown, the boundary position of symbol 0 is located. Detection begins from the boundary position of symbol 0 and continues until symbols 112-118 are detected (resulting in "A") and symbols 119-125 are detected (resulting in "B"). UE1 determines it has been woken up based on the detection results. However, UE2 finds that the detection result "AB" is not its own and continues to detect symbols 126-132. If there is noise interference on symbols 126-132, UE2 mistakenly detects the noise interference as "C". UE2 then combines the detection results "BC" on symbols 119-125 and 126-132 to determine that it has been woken up. In reality, it is UE1 that has been woken up, not UE2, increasing the false alarm probability of UE2.

[0065] To address the issue of a high probability of false alarms in terminals during the periodic transmission of synchronization signals, this application provides a wake-up signal transmission method. This method includes: a network device sending a wake-up signal to a terminal on a first time-domain resource following the time-domain position of the synchronization signal; and the terminal receiving the wake-up signal on the first time-domain resource. The first time-domain resource can be a predefined resource, and its format is as follows: the first time-domain resource includes N first time units, which can be used to carry / transmit the wake-up signal. For example, at least one of the N first time units carries the wake-up signal. The boundary positions of the first time units are also predefined, for example, determined based on the time-domain position of the synchronization signal. In this way, the time-domain resources used for transmitting wake-up signals and the boundary positions of these time-domain resources can be defined so that the terminal knows the starting position of the wake-up signal and at which time-domain positions the wake-up signal is detected / received. This reduces the number of times the terminal decodes paging-related information (such as paging messages) (i.e., it only attempts to decode at the boundary position of the first time unit, rather than attempting to decode at any symbol position), thereby reducing the terminal's false alarm probability and avoiding the problem of a high false alarm probability caused by the terminal's existing method of attempting to decode at any symbol position.

[0066] It should be understood that the wake-up signal described in this application can at least be used to indicate paging-related information. For example, the wake-up signal can carry paging messages, such as the UE ID of the paged terminal, a portion of the UE ID of the paged terminal, or the group ID of the paged terminal, etc., and can also carry other information, such as system messages, system configurations, and other information. The wake-up signal is one type of signal transmitted on the WUR link. In this application, the signal transmitted on the WUR link can be called a WUR signal. In addition to the wake-up signal, other signals can also be transmitted on the WUR link, such as synchronization signals, etc. In this case, the WUR signal can also include synchronization signals, etc.

[0067] It should be understood that the WUR link described in this application can refer to the communication link between the terminal's wake-up circuit and the network device. The terminal's wake-up circuit can support the terminal in sending and receiving wake-up signals and other signals, such as synchronization signals, through the WUR link. When the terminal is working on the WUR link, the terminal's wake-up circuit is in the on state, and the terminal's main circuit is in the off state. Optionally, transmission resources can be pre-configured for the WUR link. These transmission resources may include time-domain resources and / or frequency-domain resources. Transmitting signals (such as wake-up signals) through the WUR link can be understood as transmitting signals on the WUR link or using / using the transmission resources corresponding to the WUR link to transmit signals. It should be noted that the time-domain resources described in this application can also be understood as time resources, and the frequency-domain resources described in this application can also be understood as frequency resources, etc.

[0068] It should be understood that the main link described in this application can refer to the communication link between the terminal's main circuit and the network device. The terminal's main circuit can support the terminal in a connected state to send and receive signals and / or transmit data with the network device through the main link. When the terminal is working on the main link, the terminal's main circuit is in the on state, and the terminal's wake-up circuit is in the off state. Optionally, transmission resources can be pre-configured for the main link, including time-domain resources and / or frequency-domain resources. Transmitting signals through the main link can be understood as transmitting signals on the main link or using / using the transmission resources corresponding to the main link to transmit signals.

[0069] It should be noted that the message names or parameter names in the various embodiments of this application are merely examples, and other names may be used in specific implementations. For example, the time-domain resources described in this application may also be named time resources or other names. Time-domain resources may include multiple small time periods (or time lengths). In other words, time-domain resources can be divided into multiple time periods. A time period may be a symbol, a slot, a scheduling unit, or a millisecond (ms) time, etc. The frequency-domain resources described in this application may also be named frequency resources or other names. Frequency-domain resources may include one or more frequency-domain elements (or frequency units). The frequency-domain element may be a resource element (RE), a resource block (RB), or a physical resource block (PRB). The WUR link may be called the first link, and the main link may be called the second link; there is no limitation.

[0070] The wake-up signal transmission method provided in the embodiments of this application will be described below with reference to the accompanying drawings.

[0071] The wake-up signal transmission method provided in this application can be used in any of the following systems: 4th generation (4G) systems, Long Term Evolution (LTE) systems, 5th generation (5G) systems, New Radio (NR) systems, Vehicle-to-Everything (V2X) systems, and Internet of Things (IoT) systems. It can also be applied to other next-generation communication systems, and is not limited thereto. The following examples illustrate this method. Figure 4 Taking the communication system shown as an example, the wake-up signal sending method provided in the embodiments of this application will be described.

[0072] Figure 4 This is a schematic diagram of a communication system provided in an embodiment of this application, such as... Figure 4 As shown, the communication system may include network devices and multiple terminals, such as Terminal 1 and Terminal 2. The terminals can be located within the coverage area of ​​the network devices and can connect to the network devices via a Uu port. Figure 4 In this context, the terminal can be in a first state, such as the WUR state, or in an idle or inactive state. Taking the terminal in the first state (e.g., the WUR state) as an example, the network device can send paging-related information to the terminal as needed via the WUR link. A terminal in the first state can periodically monitor whether it has been paged via the WUR link, or continuously monitor whether it has been paged. If the terminal receives its corresponding paging-related information, it will subsequently initiate random access, such as sending a preamble to the network device.

[0073] It should be noted that, Figure 4 This is just an example framework diagram. Figure 4 The number of nodes included is unlimited; for example, it can include more terminals, and except... Figure 4 In addition to the functional nodes shown, other nodes may also be included, such as core network equipment, gateway equipment, application servers, etc., without restriction.

[0074] The following is about Figure 4 The various network elements in the system shown are described.

[0075] The network device is mainly used to implement functions such as terminal resource scheduling, wireless resource management, and wireless access control. Specifically, the network device can be any node among small base stations, wireless access points, transmission receive points (TRPs), transmission points (TPs), and some other access nodes. In the embodiments of this application, the means for implementing the functions of the network device can be the network device itself, or it can be any means that supports the network device in implementing these functions, such as a chip system (e.g., a chip, or a processing system composed of multiple chips) or a modem. The following describes the method provided in the embodiments of this application, taking the example of a network device as the means for implementing the functions of the network device.

[0076] The terminal can be terminal equipment, user equipment (UE), mobile station (MS), or mobile terminal (MT), etc. Specifically, the terminal can be a mobile phone, tablet computer, or computer with wireless transceiver capabilities. It can also be a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in autonomous driving, a wireless terminal in telemedicine, a wireless terminal in a smart grid, a wireless terminal in a smart city, a smart home, or an in-vehicle terminal, etc. In the embodiments of this application, the device used to implement the terminal's functions can be the terminal itself or a device capable of supporting the terminal in implementing those functions, such as a chip system (e.g., a chip, or a processing system composed of multiple chips) or a modem. The following describes the wake-up signal transmission method provided in the embodiments of this application, taking the terminal as an example of the device used to implement the terminal's functions.

[0077] In practical implementation, Figure 4 The network elements shown, such as terminals and network devices, can be adopted. Figure 5a The shown composition or includes Figure 5a The components shown. Figure 5a This is a schematic diagram illustrating the composition of a communication device 500 provided in an embodiment of this application, as shown below. Figure 5aAs shown, the communication device 500 may include a processor 501, a communication line 502, and a communication interface 503. Furthermore, the communication device 500 may also include a memory 504, an output device 505, and an input device 506. The input device 506 may be a keyboard, mouse, microphone, or joystick, etc., and the output device 505 may be a display screen, speaker, etc. These components are connected via the communication line 502.

[0078] In one possible design, such as Figure 5a As shown, when the communication device 500 is a terminal or a functional module within a terminal, the communication device 500 may further include a processor 507 and a communication interface 508. The processor 501 and communication interface 503 may be integrated into the main circuit of the communication module, while the processor 507 and communication interface 508 may be integrated into the wake-up circuit of the communication module.

[0079] In another possible design, such as Figure 5b As shown, when the communication device 500 is a terminal or a functional module within a terminal, the processor 501 can virtually process two processing units 501a and 501b, and the communication interface 503 can virtually generate two communication units 503a and 503b. Processing unit 501a and communication unit 503a can form the main circuit or first module of the terminal. Processing unit 501b and communication unit 503b can form the wake-up circuit or second module of the terminal.

[0080] The processor, such as processor 501 and processor 507, can be a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. Processor 501 can also be other devices with processing functions, such as circuits, devices, or software modules.

[0081] Communication line 502 is used to transmit information between the components included in communication device 500.

[0082] Communication interfaces (such as communication interface 503 and communication interface 508) are used to communicate with other devices or other communication networks. These other communication networks can be Ethernet, radio access network (RAN), wireless local area network (WLAN), etc. Communication interface 503 can be a radio frequency module, transceiver, or any device capable of communication. This application embodiment uses a radio frequency module as an example to illustrate communication interface 503. The radio frequency module can include an antenna, radio frequency circuits, etc., and the radio frequency circuits can include radio frequency integrated chips, power amplifiers, etc.

[0083] Memory 504 is used to store instructions. These instructions can be computer programs.

[0084] The memory 504 can be a read-only memory (ROM) or other type of static storage device that can store static information and / or instructions; it can also be a random access memory (RAM) or other type of dynamic storage device that can store information and / or instructions; it can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disk storage, magnetic disk storage media or other magnetic storage devices. Optical disk storage includes compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.

[0085] It should be noted that the memory 504 can exist independently of the processor 501 or can be integrated with the processor 501. The memory 504 can be used to store instructions, program code, or some data, etc. The memory 504 can be located inside or outside the communication device 500, without limitation. The processor 501 is used to execute the instructions stored in the memory 504 to implement the wake-up signal sending method provided in the following embodiments of this application. In one example, the processor 501 may include one or more CPUs, such as CPU0 and CPU1. As an optional implementation, the communication device 500 includes multiple processors.

[0086] It should be noted that the communication device 500 can be a desktop computer, laptop computer, network server, mobile phone, tablet computer, wireless terminal, embedded device, chip system, or something else. Figure 5a or Figure 5b Equipment with a similar structure. Furthermore... Figure 5aThe structural composition shown does not constitute a limitation on the communication device, except... Figure 5a or Figure 5b In addition to the components shown, the communication device may include more or fewer components than illustrated, or combine certain components, or have different component arrangements.

[0087] In this embodiment of the application, the chip system may be composed of chips or may include chips and other discrete devices.

[0088] The following is combined with Figure 4 The communication system shown herein describes the wake-up signal transmission method provided in the embodiments of this application. The devices in the following embodiments may have... Figure 5a or Figure 5b The components shown, and the actions, terminology, etc. involved in the various embodiments, can be referenced interchangeably. The message names or parameter names in the messages between devices in each embodiment are just examples, and other names can be used in specific implementations. For example, "wake-up" in the following embodiments can be replaced by "paging," and "settings" can be replaced by "configuration." It is hereby stated that the embodiments of this application are not limited in this respect.

[0089] Figure 6 A wake-up signal transmission method provided in this application embodiment, such as Figure 6 As shown, the method may include:

[0090] Step 601: The network device sends a synchronization signal to the terminal; correspondingly, the terminal receives the synchronization signal from the network device.

[0091] Among them, network devices can be Figure 4 Network devices within the system. The terminal can be... Figure 4 Terminals located within the coverage area of ​​this network device, for example, can be Figure 4 Terminal 1 or Terminal 2 in the context of the network. This terminal can have at least three states: idle, inactive, and connected. It may also have additional states, such as WUR state. This terminal can have / be deployed with the following: Figure 1 The low-power circuit (or wake-up circuit) and main circuit shown operate as follows: when the terminal is in idle, inactive, or WUR state, the low-power circuit (or wake-up circuit) is active and the main circuit is off; when the terminal is in connected state, the main circuit is active and the low-power circuit (or wake-up circuit) is off. It should be understood that execution... Figure 6 When using the method shown, the terminal is in idle, inactive, or WUR state.

[0092] In this application, the synchronization signal can be used for terminal time synchronization, such as locating the boundary position of symbols. The synchronization signal can be transmitted via a WUR link; in other words, the synchronization signal can be carried on the transmission resources (such as time-domain resources and / or frequency-domain resources) corresponding to the WUR link. In this application, the transmission resources corresponding to the WUR link can be called WUR resources, which may include one or more WUR frames and first frequency-domain resources. In one possible design, a WUR frame is used to transmit a wake-up signal. In another possible design, a WUR frame can be used to transmit the synchronization signal and other signals (such as a wake-up signal). A frame may include multiple time units. Specifically, WUR resources can be pre-configured by network devices. The function of the WUR frame can be pre-configured by network devices or pre-defined by the protocol. The relevant description of the WUR link is as described above and will not be repeated here.

[0093] In this application, the synchronization signal can be sent periodically. The period of the synchronization signal and the transmission resources of the synchronization signal (such as the start / end position in the time domain, the start / end position in the frequency domain, the time domain length, etc.) can be pre-configured / set, for example, they can be pre-defined by the protocol.

[0094] Since the WUR link can transmit other signals besides synchronization signals, such as wake-up signals, taking the wake-up signal as an example, to ensure that the synchronization signal is not interfered with during WUR frame transmission, one possible design is to ensure that the transmission resources of the synchronization signal and the wake-up signal transmitted on the WUR link do not overlap. For example, the time-domain resources of the synchronization signal and the wake-up signal transmitted on the WUR link are set to not overlap, with a certain gap between them. Specifically, this gap could be between the end position of the synchronization signal and the start position of the wake-up signal. The length of the time-domain resources of the synchronization signal and the length of the gap within each cycle are equal / equal in length, and the start position of the synchronization signal in each cycle is equal in length to the start position of the wake-up signal's transmission resources. This gap can be preset, or in another possible design, the end position of the synchronization signal is the start position of the wake-up signal, meaning the end position of the synchronization signal overlaps with the start position of the wake-up signal. Specifically, the positional relationship between the transmission resources of the synchronization signal transmitted on the WUR and the transmission resources of other signals (such as the wake-up signal) can be preset and is not restricted.

[0095] It should be noted that, in this embodiment, the transmission resources of the synchronization signal can refer to the time-domain resources allowed to be occupied by the synchronization signal, or the time-domain resources that can be used to carry the synchronization signal, or the candidate transmission position of the synchronization signal. The length of the transmission resources of the synchronization signal can also be described as the length of the synchronization signal. The transmission resource block occupied by the synchronization signal can refer to the transmission resources actually occupied by the synchronization signal within the transmission resources of the synchronization signal. The transmission resources occupied by the synchronization signal can be less than or equal to the transmission resources of the synchronization signal. Similarly, the transmission resources of the wake-up signal can be the transmission resources allowed to be occupied by the wake-up signal, or the transmission resources that can be used to carry the wake-up signal, or the candidate transmission position of the wake-up signal. The length of the transmission resources of the wake-up signal can also be described as the length of the wake-up signal. In this case, whether the wake-up signal actually occupies the transmission resources of the wake-up signal depends on whether a terminal is paged. The transmission resources occupied by the wake-up signal can be the transmission resources actually occupied by the wake-up signal within the transmission resources of the wake-up signal.

[0096] For example, the network device can carry the synchronization signal on pre-configured transmission resources and periodically send the synchronization signal to the terminal via the WUR link. Correspondingly, the terminal uses / utilizes its built-in wake-up circuitry (or low-power circuitry or the first module) to periodically receive the synchronization signal from the network device on the WUR link. It should be understood that the terminal's periodic receipt of the synchronization signal from the network device on the WUR link described in this application can also be alternatively described as the terminal receiving the synchronization signal from the network device through the first module, or the terminal periodically receiving the synchronization signal from the network device in a first state or a first mode.

[0097] Optionally, to facilitate terminal detection of the synchronization signal, the network device can modulate the synchronization signal into OOK mode before sending it to the terminal. In this case, the modulation method of the synchronization signal is OOK, or the waveform of the synchronization signal is OOK. For example, the waveform of the synchronization signal can be as follows: Figure 2 The square wave shown, or the waveform of the synchronization signal, can be a similar square wave constructed based on orthogonal frequency division multiplexing (OFDM) signals.

[0098] Step 602: The network device sends a wake-up signal to the terminal on the first time domain resource. Correspondingly, the terminal receives the wake-up signal from the network device on the first time domain resource.

[0099] Furthermore, if the terminal is included in one or more terminals that need to receive paging as indicated by the wake-up signal, that is, if the wake-up signal includes information corresponding to the terminal in the information indicating one or more terminals that need to receive paging, then it means that the terminal needs to be woken up. Figure 6The method may further include: the network device sending first information to the terminal and / or interacting with the terminal to perform a random access procedure, wherein interacting with the terminal to perform the random access procedure may include the network device receiving a preamble sent by the terminal, etc. Accordingly, the terminal receives the first information from the network device and / or performs random access. The first information includes one or more of paging DCI, paging message, and paging early indication (PEI).

[0100] Specifically, the terminal can receive first information and / or perform random access from the network device via a second module (such as the main circuit) on the main link (which can be called the second link). The second link corresponds to a second frequency domain resource, which may be the same as or different from the first frequency domain resource corresponding to the WUR link. When the terminal receives the first information from the network device and / or performs random access, the terminal can be in a second state or a second mode. In other words, the terminal can receive the first information from the network device and / or perform random access in the second state or the second mode. Performing random access may include the terminal sending a preamble to the network device, etc.

[0101] In this embodiment, the first time-domain resource can be understood as a time resource containing N preset time units. The first time-domain resource can be named a WUR frame, a wake-up frame, or other names, without limitation. This application uses a WUR frame as an example for the first time-domain resource, and this will be consistently applied here.

[0102] One of the WUR frames may include N first time units of a preset length. The lengths of the first time units in different WUR frames may be the same or different, where N is an integer greater than or equal to 1 (or N is a positive integer). The first time units can be used to transmit wake-up signals. Step 602 can be alternatively described as the network device sending a wake-up signal to the terminal at least in at least one first time unit of the WUR frame, and the terminal receiving the wake-up signal from the network device at at least one first time unit of the WUR frame. In addition to transmitting wake-up signals, the first time domain resources can also be used to transmit other signals, such as synchronization signals and other signals transmitted on the second link (or the main link).

[0103] For example, assuming the first temporal resource is a WUR frame, such as Figure 7c , Figure 7e , Figure 9b as well as Figure 9d As shown in the figure, the black box represents the time-domain resources used for transmitting signals on the main link. In one embodiment, the WUR frame format can be as follows: Figure 7c (1) Figure 9bAs shown in (1), the WUR frame includes the temporal resources of the wake-up signal. The WUR frame does not include the temporal resources corresponding to the black box. In this case, the WUR frame can be used to transmit the wake-up signal, but cannot be used to transmit signals on the main link. In another embodiment, as... Figure 7e (1) and Figure 9d As shown in (1), the WUR frame includes time-domain resources for the synchronization signal and time-domain resources for the wake-up signal. The WUR frame does not include the time-domain resources corresponding to the black box. In this case, the WUR frame can be used to transmit the synchronization signal and the wake-up signal, but cannot be used to transmit signals on the main link. In another embodiment, the WUR frame format can also be as follows: Figure 7c (2) and Figure 9b In (2) of the figure, the WUR frame includes the temporal resources of the wake-up signal and the temporal resources corresponding to the black box in the figure. In this case, the WUR frame can be used not only to transmit the wake-up signal, but also to transmit signals on the main link. In another embodiment, such as Figure 7e (2) and Figure 9d As shown in (2) of the figure, the WUR frame includes the time-domain resources of the synchronization signal, the time-domain resources of the wake-up signal, and the time-domain resources corresponding to the black box in the figure. At this time, the WUR frame can not only be used to transmit the synchronization signal and the wake-up signal, but also to transmit signals on the main link. It should be understood that Figure 7c , Figure 7e , Figure 9b as well as Figure 9d The accompanying drawings are exemplary and are not intended to limit the scope of this application. Figure 7c , Figure 7e , Figure 9b as well as Figure 9d The number of WUR frames and the length of the temporal resources are shown.

[0104] Specifically, the network device can send a wake-up signal to the terminal through the WUR link, and the terminal can receive the wake-up signal from the network device through the WUR link or the first module. At this time, the terminal is in the first state or the first mode. The terminal receives the wake-up signal from the network device through the WUR link or the first module in the first state or the first mode.

[0105] In this embodiment, the first time unit can be named a WUR slot, WUR occurrence, or scheduling unit, etc. The first time unit can include multiple symbols (or chips), meaning it can be understood as a time period comprising multiple consecutive symbols (or chips). One symbol can correspond to one encoded bit, which refers to the bit obtained after encoding the original information. The length of the WUR frame and the length of the first time unit can be pre-configured, for example, as specified in the protocol. The number N of first time units in a WUR frame can be determined by the network device and indicated / configured to the terminal by the network device. Alternatively, the number N of first time units in a WUR frame can be pre-defined in the protocol. The boundary position of the first time unit can be determined based on the time-domain position of the synchronization signal. The length of the first time unit can be the same as or different from the length of the time-domain resource of the synchronization signal; for example, the length of the time-domain resource of the synchronization signal may be less than the length of the first time unit.

[0106] based on Figure 6 The method shown can define the time-domain resources used to transmit wake-up signals and the boundary positions of these time-domain resources, so that the terminal knows the starting position of the wake-up signal and at which time-domain positions the wake-up signal is detected / received. This reduces the number of times the terminal decodes paging-related information (such as paging messages) (i.e., it only attempts to decode at the boundary position of the first time unit, rather than attempting to decode at any symbol position), thereby reducing the false alarm probability of the terminal and avoiding the problem of a high false alarm probability caused by the terminal attempting to decode at any symbol position in the existing method.

[0107] Assuming the first time-domain resource is a WUR frame, the specific design of the WUR frame and the first time unit is as follows:

[0108] In one possible design, a WUR frame is used to transmit a wake-up signal. The WUR frame can include time-domain resources (or time resources, etc.) between adjacent synchronization signals. The length of the WUR frame is equal to or less than the length of the time-domain resources between adjacent synchronization signals. For example, all or part of the time-domain resources between the end position of a synchronization signal and the start position of the next adjacent synchronization signal can be combined into one WUR frame, or part or all of the time-domain resources between the end position of a synchronization signal and the start position of the next adjacent synchronization signal can be divided into multiple WUR frames. In this possible design, the WUR frame does not include the time-domain resources of the synchronization signal. The WUR frame includes one or more first time units. One first time unit can be used to transmit one wake-up signal, i.e., one wake-up signal occupies one first time unit, or multiple first time units can be used to transmit one wake-up signal, i.e., one wake-up signal occupies multiple first time units.

[0109] Assuming the first time unit is a WUR slot, one WUR slot is used to transmit one wake-up signal. For example, ... Figure 7a As shown, all time-domain resources between synchronization signal 1 and synchronization signal 2 are considered as a WUR frame. A WUR frame includes four WUR slots (e.g., ...). Figure 7a (As shown in the dashed box). For example, such as... Figure 7b As shown, all time-domain resources between synchronization signal 1 and synchronization signal 2 are divided into multiple WUR frames, and one WUR frame includes two WUR slots (e.g., Figure 7b (As shown in the dashed box). For example, such as... Figure 7c As shown in (1), a portion of the time-domain resources between synchronization signal 1 and synchronization signal 2 (excluding the time-domain resources within the black box) is treated as a WUR frame. A WUR frame can include three WUR slots (such as...). Figure 7c (as shown in the dashed box in (1)).

[0110] In another possible design, the WUR frame is used to transmit a synchronization signal and a wake-up signal. For example, in this possible design, the beginning of the WUR frame is used to transmit the synchronization signal, and the wake-up signal is transmitted after the synchronization signal. The WUR frame may include the time-domain resources used by the synchronization signal, as well as the time-domain resources between the synchronization signal and the next adjacent synchronization signal. The length of the WUR frame is greater than the length of the time-domain resources between adjacent synchronization signals. For example, the time-domain resources between the start position of the synchronization signal and the start position of the next adjacent synchronization signal can be used as the WUR frame. In this possible design, the WUR frame may include the time-domain resources of the synchronization signal and one or more first time units. One first time unit can be used to transmit a wake-up signal, i.e., one wake-up signal occupies one first time unit, or multiple first time units can be used to transmit a wake-up signal, i.e., one wake-up signal occupies multiple first time units.

[0111] Assuming the first time unit is a WUR slot, one WUR slot is used to transmit one wake-up signal. For example... Figure 7d As shown, the time-domain resources of synchronization signal 1, and the time-domain resources between synchronization signal 1 and synchronization signal 2, are considered as a WUR frame. A WUR frame includes time-domain resources for synchronization signal transmission and four WUR slots (e.g., ...). Figure 7d (As shown in the dashed box). For example, such as... Figure 7e As shown in (1), the time-domain resources of synchronization signal 1, and a portion of the time-domain resources between synchronization signal 1 and synchronization signal 2 (excluding the time-domain resources within the black box) constitute a WUR frame. A WUR frame includes time-domain resources for synchronization signal transmission and three WUR slots (such as...). Figure 7e(as shown in the dashed box in (1)).

[0112] In another possible design, the WUR frame is used to transmit multiple (two or more) synchronization signals and wake-up signals. For example, in this possible design, the beginning of the WUR frame is used to transmit a synchronization signal, which is followed by a wake-up signal, and then another synchronization signal can be transmitted after the wake-up signal, and so on.

[0113] Assuming the first time unit is a WUR slot, one WUR slot is used to transmit one wake-up signal. For example... Figure 7f As shown, the time-domain resources between the starting positions of synchronization signal 1 and synchronization signal 3 are considered as a WUR frame. This WUR frame includes the time-domain resources corresponding to synchronization signals 1 and 2, as well as 8 WUR slots (e.g., ...). Figure 7f (As shown in the dashed box in the middle), the first 4 WUR slots are time-domain resources located between synchronization signal 1 and synchronization signal 2, and the last 4 WUR slots are time-domain resources after synchronization signal 2 and before synchronization signal 3.

[0114] It should be noted that when the WUR frame represents a portion of the time-domain resources between adjacent synchronization signals, the remaining time-domain resources between the WUR frame and that adjacent synchronization signal can support time-division multiplexing (TDM) signal transmission between the WUR link and the main link. For example, Figure 7c (1) and Figure 7e In (1), the WUR frames between synchronization signals can be used to transmit wake-up signals, while other time-domain resources between synchronization signals (time-domain resources corresponding to the black box) can be used to transmit other signals. These other signals are different from the wake-up signals. These other signals can be transmitted on the main link. For example, these other signals can be the first signal sent by the network device, or the other signals can be the second signal sent by other terminals to the network device.

[0115] It should be understood that the WUR frame described in the embodiments of this application is not limited to transmitting wake-up signals, or to transmitting synchronization signals and wake-up signals. It can also be used to transmit other signals (such as a first signal, a second signal, etc.), for example, it can also be used to transmit signals corresponding to the main link. That is, the time-domain resources used by the signals transmitted on the WUR link and the main link are all included in the WUR frame. However, in the TDM scenario, the time-domain resources used to transmit signals on the main link cannot be used to transmit signals on the WUR link (wake-up signals, or synchronization signals and wake-up signals, etc.). For example, this application is not limited to such... Figure 7c (1) and Figure 7eAs shown in (1), the WUR frame does not include the temporal resources corresponding to the black box. Alternatively, the WUR frame can be designed to include, for example, the temporal resources corresponding to the black box. Figure 7c (2) and Figure 7e The time domain resources corresponding to the black box shown in (2) are not used by the WUR link, but are used to transmit the first signal, the second signal, etc. on the main link.

[0116] The first signal includes at least one of the following: synchronization signal block (SSB), physical downlink control channel (PDCCH), physical downlink shared channel (PDSCH), channel state information reference signal (CSI-RS), phase tracking reference signal (PT-RS), positioning reference signal (PRS), and demodulation reference signal (DMRS). The second signal includes at least one of the following: DMRS, physical uplink shared channel (PUSCH), physical uplink control channel (PUCCH), and sounding reference signal (SRS).

[0117] It should be understood that, in one possible design of this application embodiment, the format of WUR frames within each period or across different periods can be set to the same. A period may include one or more WUR frames, or a WUR frame may include one or more periods, etc., without limitation. It should be explained that the period mentioned in this application may refer to the transmission period of a synchronization signal. For example, the time interval between the start position of the time-domain resource of a synchronization signal and the start position of the time-domain resource of the next adjacent synchronization signal can be called a period. This period can be pre-configured or defined by the protocol. For example, as described above... Figures 7a-7f The frame format of each WUR frame in the attached diagram is the same.

[0118] It should be understood that the frame format of the WUR frame described in this application may include the length of the WUR frame, the number of first time units included in the WUR frame, the length of the first time units included in the WUR frame, the length of the time domain resources of the synchronization signal included in the WUR frame, the type of signal that can be carried on the time units included in the WUR frame, etc. The WUR frame including signals (synchronization signals, wake-up signals, etc.) described in this application may refer to the WUR frame including the transmission resources of the signal, or the WUR frame including the time domain resources that can be used to transmit the signal.

[0119] In another possible design, the formats of different WUR frames can be set to be different. For example, there can be two WUR frames with the same length, but the signals that can be carried in the time units of the two WUR frames are different. One WUR frame can include the time domain resources of the synchronization signal and the time domain resources of the wake-up signal. This WUR frame can be used to carry / transmit at least one synchronization signal and at least one wake-up signal. The other WUR frame does not include the time domain resources of the synchronization signal, but includes the time domain resources of the wake-up signal. This WUR frame is used to transmit at least one wake-up signal.

[0120] Assuming the first time unit is a WUR slot, one WUR slot is used to transmit one wake-up signal. For example... Figure 7g As shown, the time-domain resources from the start position of synchronization signal 1 to synchronization signal 2 are divided into two WUR frames: WUR frame 1 and WUR frame 2. WUR frame 1 includes time-domain resources for the transmission of synchronization signal 1 and three WUR slots (e.g., ...). Figure 7d (As shown in the dashed box), the length of the time-domain resource of the synchronization signal is equal to the length of the WUR slot. WUR frame 2 includes four WUR slots for transmitting the wake-up signal, and each WUR frame has the same length.

[0121] It should be understood that Figures 7a-7g This is merely an illustrative diagram of the WUR frame format, showing only a few WUR frames within a few cycles. Figures 7a-7g The number of synchronization signals, WUR frames, and time units included in the WUR frame are unlimited, for example... Figures 7a-7g It can include more synchronization signals, WUR frames, and a WUR frame can include more time units, etc.

[0122] also, Figures 7a-7g In the WUR frame format shown, a wake-up signal occupies one first time unit, unlike... Figures 7a-7gThe WUR frame format shown can also be designed so that a wake-up signal occupies multiple first time units. In this scenario, the first time unit can be named a scheduling unit. A scheduling unit can include multiple symbols (or chips), and one symbol corresponds to one encoded bit; that is, one symbol can be used to carry one encoded bit. For example, as... Figure 7h As shown, a WUR frame includes 10 scheduling units (such as...). Figure 7h (As shown in the medium-sized dashed rectangle), the wake-up signal can occupy 5 scheduling units. It should be understood that... Figure 7h The design of the first time unit in the WUR frame format shown can be applied to other design formats of other WUR frames (e.g., Figures 7a-7g (as shown in the format), that is Figures 7a-7g The first time unit (e.g., WURslot) in the format shown can be designed in a different way than those shown in the figure. Figure 7h As shown, they will not be shown one by one here.

[0123] In this embodiment of the application, there is a certain time-domain positional relationship between the first time unit and the time-domain position of the synchronization signal, and the boundary position of the first time unit can be determined according to the time-domain position of the synchronization signal.

[0124] In one possible design, the boundary position of the first time unit is determined based on the starting position of the synchronization signal. For example, assuming the first time unit is the first time unit within the first time domain resource, the starting position of the first time unit is a position after the starting position of the synchronization signal, at a first preset interval from the starting position of the synchronization signal. The length of the first time unit can be equal to the first preset interval. The first preset interval can be pre-set.

[0125] Assuming the first time unit is a WUR slot, for example, Figure 8a As shown, a WUR frame includes four WUR slots. The first WUR slot in the WUR frame is WUR slot1, and the starting position of WUR slot1 is one position after the starting position of synchronization signal 1. For example, as... Figure 8b As shown, each WUR frame includes four WUR slots. The first WUR slot in WUR1 is used for the transmission of synchronization signal 1, and the following three WUR slots are used for the transmission of wake-up signal. The interval between the starting position of synchronization signal 1 and the starting position of the second WUR slot in WUR1 is one WUR slot. All four WUR slots in WUR2 can be used for the transmission of wake-up signal. There is no synchronization signal in WUR2, so it is not used for the transmission of synchronization signal.

[0126] In another possible design, the boundary position of the first time unit is determined based on the end position of the synchronization signal. For example, assuming the first time unit is the first time unit within the first time domain resource, the starting position of the first time unit is the end position of the synchronization signal. Alternatively, the starting position of the first time unit is a position after the end position of the synchronization signal, at a second preset interval from the end position of the synchronization signal. For instance, the length of the first time unit can be equal to the sum of the length of the synchronization signal and the length of the second preset interval. The second preset interval can be preset.

[0127] Assuming the first time unit is a WUR slot, for example, Figure 7a As shown, the first WUR slot is WUR slot1, and the starting position of WUR slot1 coincides with the ending position of synchronization signal 1. For example, as... Figure 8a As shown, a WUR frame includes four WUR slots. The first WUR slot in the WUR frame is WUR slot1, and the starting position of WUR slot1 is two positions after the end position of synchronization signal 1. For example, as... Figure 8b As shown, each WUR frame includes four WUR slots. The first WUR slot in WUR1 is used for synchronization signal 1 transmission, and the following three WUR slots are used for wake-up signal transmission. The interval between the end position of synchronization signal 1 and the start position of the second WUR slot in WUR1 is 2. The sum of the interval 2 and the duration of synchronization signal 1 is equal to the length of one WUR slot. All four WUR slots in WUR2 can be used for wake-up signal transmission. There is no synchronization signal in WUR2, so it is not used for synchronization transmission.

[0128] In this embodiment, the time-domain positions of the first time-domain resource and the synchronization signal also have a certain positional relationship. In one possible design, the starting position of the first time-domain resource is the ending position of the synchronization signal, that is, the starting position of the first time-domain resource overlaps with the ending position of the synchronization signal. Assuming the first time-domain resource is a WUR frame, for example... Figure 7a As shown, Figure 7a The starting position of the first WUR frame from the left is the ending position of synchronization signal 1. Alternatively, the starting position of the first time-domain resource is a position three preset intervals after the ending position of the synchronization signal. This third preset interval can be pre-set. Assuming the first time-domain resource is a WUR frame, for example... Figure 8a As shown, Figure 8aThe first WUR frame, starting from the left, begins at a position 2 seconds after the end of synchronization signal 1, and the second WUR frame begins at a position 2 seconds after the end of synchronization signal 2.

[0129] In another possible design, the end position of the first time-domain resource is the start position of the next synchronization signal adjacent to the synchronization signal. Assume the first time-domain resource is a WUR frame, for example, as... Figure 7a As shown, Figure 7a The end position of the first WUR frame in the sequence is the start position of synchronization signal 2. Alternatively, the end position of the first time-domain resource is the position four preset intervals away from the start position of the next synchronization signal adjacent to the first synchronization signal, preceding the next synchronization signal adjacent to the first. Assuming the first time-domain resource is a WUR frame, for example, as... Figure 8c As shown, Figure 8c The first WUR frame, starting from the left, ends at a position 3 seconds before the start of synchronization signal 2, and the second WUR frame ends at a position 3 seconds before the start of synchronization signal 3.

[0130] It should be understood that the above only shows... Figure 7a , Figure 8a as well as Figure 8c The diagram illustrates the positional relationship between the first time-domain resource and the synchronization signal in the WUR frame format, as well as the relationship between the first time unit and the synchronization signal in the time domain. Similarly, other WUR frame formats (such as...) Figures 7b-7h The positional relationships between the first time-domain resource and the synchronization signal in the time-domain location (as shown in the format) and between the first time unit and the synchronization signal in the time-domain location are not limited to those shown in the figure, but can also be referenced from [other sources]. Figure 7a , Figure 8a as well as Figure 8c The positions are set as shown, and will not be shown one by one here.

[0131] In this embodiment, the wake-up signal can at least be used to indicate paging-related information, such as indicating one or more terminals that need to receive a page. For example, the wake-up signal may include the identifier of the terminal that needs to receive the page or the group identifier of the group to which the terminal that needs to receive the page belongs. Furthermore, the wake-up signal may also include other information such as system messages.

[0132] Optionally, the terminal can determine the position of the first time unit occupied by the wake-up signal based on its local clock. That is, the terminal can calculate the position of the first time unit occupied by the wake-up signal based on its distance from the synchronization signal. For example, assuming each first time unit contains 40 symbols, and each symbol is 4µs long, the terminal can calculate the time based on its local clock, considering the next first time unit to be reached every 160µs. Alternatively, the wake-up signal can also carry / contain indication information, such as at the beginning of the wake-up signal. This indication information can be used to indicate the index value of the first time unit occupied by the wake-up signal, or it can indicate the index value of the starting time unit occupied by the wake-up signal, which can refer to the first first time unit within the first time unit occupied by the wake-up signal. This facilitates the terminal in determining / locating the position of the wake-up signal in the WUR frame based on the indication information, improving the accuracy of wake-up signal detection.

[0133] In this embodiment, the index value of a time unit (such as the index value of a first time unit or the index value of a start time unit) can refer to the number of that time unit among the N first time units included in a WUR frame. Optionally, the N first time units are numbered sequentially according to their chronological order, and the numbers of the N first time units can be 0 ~ (N-1) or 1 ~ N. For example, Figure 7h As shown, a WUR frame includes 10 scheduling units: scheduling units 0-9. The wake-up signal occupies scheduling units 5-9. In this case, the wake-up signal can carry a start time unit: the index value 5 of scheduling unit 5. The terminal determines the location of the wake-up signal within scheduling units 5-9 based on this index value 5 and the number of encoded bits corresponding to the wake-up signal (i.e., the length of the wake-up signal), and then detects / receives the wake-up signal on scheduling units 5-9. It should be understood that the number of encoded bits corresponding to the wake-up signal (i.e., the length of the wake-up signal) can be predetermined, for example, it can be pre-configured by the network device through the main link or predefined by the standard.

[0134] As can be seen from the above, this application designs the WUR frame (i.e., the first time domain resource used to transmit wake-up signals) format, and clarifies the number of time units in the WUR frame that can be used to transmit wake-up signals, the positional relationship between the boundary position of the time unit used to transmit wake-up signals and the synchronization signal, so that after the terminal completes time synchronization according to the synchronization signal, it can accurately locate which time units will transmit wake-up signals, and then detect wake-up signals in these time units to avoid false alarms.

[0135] For example, suppose a WUR frame represents all time-domain resources between adjacent synchronization signals, the first time unit is a WUR slot, and one WUR slot is used to transmit a wake-up signal, such as... Figure 8d As shown, there will not be a situation where a wake-up signal is transmitted across two WUR slots. Therefore, when the wake-up signal includes the identifier of the terminal to be woken up, assuming that the cell includes UE1 and UE2, with UE1's identifier being AB and UE2's identifier being BC, if the base station wants to wake up UE1 in the cell, the base station will send the wake-up signal "AB". For UE1 and UE2, they can be transmitted in one WUR slot (e.g., ...) according to the WUR frame format shown in this application. Figure 8d Starting from the boundary of WUR slot 2 in the second WUR frame, the system detects the received wake-up signal until all coded bits within that WUR slot have been detected. Based on the detection results, it determines whether the identifier belongs to itself; if so, it is woken up. UE1 and UE2 will not start from the middle position of the WUR slot (i.e., ... Figure 8d Starting from the beginning position of the coded bit B, two coded bits "BX" are continuously detected. In the event of noise interference, the second coded bit "X" will not be mistakenly identified / detected as coded bit C, causing UE2 to be woken up.

[0136] The above describes how WUR frames can be used to transmit wake-up signals. Optionally, for different terminals, which may be located in the same cell or different cells, different time windows for receiving wake-up signals can be configured to ensure that the time windows of different terminals in the same cell are staggered / non-overlapping, or that the time windows of different terminals in different cells are staggered / overlapping. This time window can refer to the time period during which the terminal receives the wake-up signal. The time window can be a portion of a WUR frame's resources (such as a portion of the first time unit) or a time window consisting of one or more WUR frames.

[0137] It should be understood that in the embodiments of this application, the time windows for different terminals to receive wake-up signals can be independent and non-overlapping. Alternatively, the time windows for different terminals to receive wake-up signals can overlap.

[0138] For example, taking different terminals located in cell 1 and cell 2 respectively, the time window configured for receiving wake-up signals for terminals in cell 1 is WUR slot 2-WUR slot 4 within WUR frames 1-3. Terminals in cell 1 can receive wake-up signals on WUR slots 2-4 within these frames. The time window configured for receiving wake-up signals for terminals in cell 2 can be WUR frames 6-9, meaning the time window includes all WUR slots within WUR frames 6-9. Terminals in cell 2 can receive wake-up signals on all WUR slots within these frames. In this case, the time windows of terminals located in cell 1 and cells 2 do not overlap and are independent of each other.

[0139] For example, for UE1, UE2 and UE3 located in the same cell, a time window "WUR frame 0-WUR frame 3" is configured for UE1, a time window "WUR frame 2-WUR frame 5" is configured for UE2, and a time window "WUR frame 4-WUR frame 7" is configured for UE3. At this time, the time windows of UE1 and UE2 overlap, the time windows of UE2 and UE3 overlap, and the time windows of UE1 and UE3 do not overlap, so that the time windows of different terminals in the same cell can overlap or be independent of each other.

[0140] For example, the network device can configure a time window for the terminal to receive the wake-up signal. For instance, when the terminal is in a connected state, the network device sends first configuration information to the terminal through the main link. The first configuration information can be used to indicate the time window for the terminal to receive the wake-up signal. For example, the first configuration information may include the frame number (or index value) of the WUR frame in which the terminal receives the wake-up signal and / or the index value of the time unit in the WUR frame, etc.

[0141] In this embodiment, the terminal can receive the wake-up signal within the time window through the following two operating modes: Mode 1: Continuously receive signals using the wake-up circuit, meaning the wake-up circuit is always receiving signals. After defining the WUR frame and the first time unit included in the WUR frame, the wake-up circuit always maintains time synchronization through the synchronization signal, but only identifies / detects the wake-up signal within the time window. Mode 2: Intermittently receive signals using the wake-up circuit, meaning the terminal only turns on / on the wake-up circuit to receive signals near the time window, and turns it off at other times to further reduce the terminal's power consumption.

[0142] To enable Method 2, the WUR link needs to provide system timing for the following reason: The terminal periodically and intermittently receives wake-up signals on the WUR link, for example, once every Q synchronization signal cycles (Q being an integer greater than 1). The terminal needs to know which cycle of the Q cycles its received wake-up signal falls within. Otherwise, when using Method 2, after a period of inactivity, due to the low accuracy of the local clock, when the terminal reopens the wake-up circuit to receive the signal, it cannot accurately determine which cycle of the Q cycles has occurred, or whether it has reached the time window for receiving the wake-up signal. Therefore, after obtaining the first configuration information, the terminal can obtain the system timing and, based on the system timing result and the first configuration information, determine the time position of the time window within which it needs to receive the wake-up signal, and receive the wake-up signal within that time window.

[0143] The system timing described in this application embodiment refers to the terminal determining which WUR frame (i.e., the first time-domain resource) within a large cycle it receives (such as a wake-up signal). This large cycle can include multiple WUR frames, and can be represented by the index range of the WUR frames. For example, the large cycle can be [the index value of the starting WUR frame, the index value of the ending WUR frame] or the index value of the starting WUR frame to the index value of the ending WUR frame. The length of the large cycle is equal to the length between the starting and ending WUR frames. The length of the large cycle can also be equal to the product of the number of WUR frames included in the large cycle and the length of a single WUR frame. For example, when the index value of the WUR frame ranges from 0 to 1023, the length of a large cycle is the length of 1024 WUR frames. Specifically, the naming and length of this large cycle can be set as needed and are not limited. The system timing result may include the index value / frame number of the WUR frame in which the currently received signal is located. According to the system timing result and the first configuration information, receiving the wake-up signal within the time window includes: if the terminal knows from the system timing result that the time window (such as the WUR frame) in which it needs to receive the wake-up signal has arrived or is about to arrive, then it wakes up and receives the wake-up signal within the time window.

[0144] For example, the terminal can obtain a timing index and further determine the system timing based on the timing index. The timing index can indicate the index value of a first time-domain resource (e.g., a WUR frame). Taking a WUR frame as the first time-domain resource, one possible design is that the timing index includes the index value of the WUR frame (or the frame number of the WUR frame), meaning the timing index directly indicates the index value of the WUR frame. In another possible design, the timing index can include parameters for calculating the index value of the WUR frame. The index value of the WUR frame can be calculated based on the timing index; in this possible design, the timing index can indirectly indicate the index value of the WUR frame. This application uses any of the following methods to obtain the timing index:

[0145] Method 1: The timed index is determined based on the first piece of information, such as the timed index.

[0146] In this first method, the first information can be carried in the synchronization signal. For example, the synchronization sequence corresponding to the synchronization signal is followed by several bits of first information. This first information indicates the timing index; that is, in addition to the sequence used for synchronization, the synchronization signal also contains indication information (such as the first information) used by the terminal to determine system timing. When the WUR frame does not include the synchronization signal, this indication information can be used to indicate which WUR frame follows the synchronization signal. When the WUR frame includes the synchronization signal, this indication information can be used to indicate which WUR frame contains the synchronization signal.

[0147] For example, such as Figure 9a or Figure 9b As shown in (1), the WUR frame includes a wake-up signal but does not include a synchronization signal. The WUR frame follows the synchronization signal. In this case, a timing index = n can be carried in the synchronization signal to indicate that the WUR frame following the synchronization signal is WUR frame n; a timing index = n+1 can be carried in the synchronization signal to indicate that the WUR frame following the synchronization signal is WUR frame n+1; and a timing index = n+2 can be carried in the synchronization signal to indicate that the WUR frame following the synchronization signal is WUR frame n+2. For example, as... Figure 9c or Figure 9d As shown in (1), the WUR frame includes a synchronization signal and a wake-up signal. By carrying a timing index = n in the synchronization signal, it is indicated that the current WUR frame of the synchronization signal is WUR frame n. By carrying a timing index = n+1 in the synchronization signal, it is indicated that the current WUR frame of the synchronization signal is WUR frame n+1. By carrying a timing index = n+2 in the synchronization signal, it is indicated that the current WUR frame of the synchronization signal is WUR frame n+2.

[0148] It should be understood that this application is not limited to the time-domain resources included in WUR frames. In addition to time-domain resources for transmitting signals on the WUR link, WUR frames may also include time-domain resources for transmitting signals on other links (such as the main link). For example, WUR frames are not limited to... Figure 9b (1) and Figure 9d The (1) shown does not include the temporal resources corresponding to the black box. Alternatively, it can be designed so that the WUR frame includes temporal resources for signals transmitted on other links, such as... Figure 9b (2) and Figure 9d As shown in (2), in addition to the time domain resources of the wake-up signal, the WUR frame may also include the time domain resources corresponding to the black box. However, the time domain resources corresponding to the black box are not used by the WUR link, but are used to transmit signals on the main link (such as the first signal and the second signal described in this application).

[0149] It should be understood that Figures 9a-9d This is merely an illustrative diagram of the WUR frame format, showing only a few WUR frames within a few cycles. Figures 9a-9d The number of synchronization signals, WUR frames, and time units included in the WUR frame are unlimited, such as... Figures 9a-9d It can include more synchronization signals, WUR frames, and a WUR frame can include more time units, etc.

[0150] Method 2: A mapping relationship exists between the timing index and the synchronization sequence of the synchronization signal. The timing index is determined based on this mapping relationship and the synchronization sequence of the synchronization signal. After receiving the synchronization signal, the terminal can determine which synchronization sequence is used by the synchronization signal through blind detection. Then, using the synchronization sequence of the synchronization signal as an index, it searches the mapping relationship to find the timing index corresponding to that synchronization sequence. Furthermore, it obtains the index value of the WUR frame based on the timing index. For example, if the WUR frame does not include the synchronization signal, the timing index obtained from the mapping relationship can determine which WUR frame follows the synchronization signal. If the WUR frame includes the synchronization signal, the timing index determined from the mapping relationship can determine which WUR frame the synchronization signal is currently in.

[0151] This mapping relationship can be pre-defined, such as in a standard or by the network device. The mapping relationship between the timing index and the synchronization sequence of the synchronization signal can be in list form or array form, without restriction.

[0152] Taking the mapping relationship between timing indices and synchronization sequences of synchronization signals as an example, Table 1 below shows this mapping relationship. Table 1 shows that there are fifteen synchronization sequences from 0 to 15. Each synchronization sequence corresponds to one timing index, resulting in a total of 16 timing indices, with values ​​ranging from 0 to 15. Assuming the synchronization sequence of the synchronization signal received by the terminal is synchronization sequence 1, the terminal can look up the timing index = 1 in Table 1 using synchronization sequence 1 as the index. Based on timing index = 1, it can determine that the WUR frame following the synchronization signal is WUR frame 1, or that the current WUR frame containing the synchronization signal is WUR1. It should be understood that Table 1 is merely an exemplary table. The mapping relationship between timing indices and synchronization sequences of synchronization signals shown in this application is not limited to the synchronization sequences and timing indices shown in Table 1, and may also include other timing sequences and timing indices, etc.

[0153] Table 1

[0154]

[0155] Method 3: The timing index is determined based on the second information and the synchronization sequence of the synchronization signal. Further, the index value of the WUR frame is obtained based on the timing index. For example, if the WUR frame does not include the synchronization signal, the timing index obtained by looking up the mapping relationship can determine which WUR frame follows the synchronization signal. If the WUR frame includes the synchronization signal, the timing index determined by the lookup relationship can determine which WUR frame the synchronization signal is currently in.

[0156] Method 3 can be understood as a combination of Methods 1 and 2, where the timing index is jointly indicated by the indication information carried in the synchronization signal and the synchronization sequence of the synchronization signal. For example, the timing index, determined based on the second information and the synchronization sequence of the synchronization signal, can include: the timing index is determined by M1 information bits and M2 information bits; wherein, the M1 information bits are carried in the synchronization signal, the second information includes M1 information bits, there is a mapping relationship between the M2 information bits and the synchronization sequence of the synchronization signal, the M2 information bits are determined according to the synchronization sequence of the synchronization signal, M1 and M2 are positive integers, and the specific values ​​of M1 and M2 can be pre-configured, such as by the protocol or by the network device.

[0157] For example, assuming the timing index ranges from 0 to 31, these 32 timing indices would require 6 bits to indicate using the method shown in Method 1. For instance, timing index = 4 would require 6 bits of "000100", and timing index = 15 would require 6 bits of "001111". In Method 3, 5 of these 6 bits are carried in the synchronization signal, meaning the second information includes 5 bits, M1 = 5. The remaining 1 bit can be represented by two synchronization sequences, i.e., M2 = 1. For example, if timing index = 4, the lower five bits of "00100" indicating the timing index can be carried in the synchronization signal. The remaining high-order bit "0" can be indicated by one of the two synchronization sequences, such as one sequence indicating 0 and the other indicating 1. The five bits from the synchronization sequence and the one bit indicated by the synchronization sequence are then combined to indicate the timing index. Alternatively, the lower four bits "0100" of the six bits "000100" indicating the timing index can be carried in the synchronization signal (i.e., the second information includes 4 bits, M1=4), while the remaining high-order bits "00" can be indicated by one of the four synchronization sequences, i.e., M2=2. For example, the four synchronization sequences correspond to 00, 01, 10, and 11 respectively. The remaining high-order bits "00" can be indicated by the first synchronization sequence, and then the four bits in the synchronization sequence and the two bits indicated by the synchronization sequence can be combined together to indicate the timing index.

[0158] The above method combines the low-order bits of the timing index into the synchronization signal and the high-order bits into a mapping relationship with the synchronization sequence of the synchronization signal to indicate the timing index. Optionally, the high-order bits of the timing index can also be combined into the synchronization signal and the low-order bits into a mapping relationship with the synchronization sequence of the synchronization signal to indicate the timing index. For example, if the timing index is 4, the high five bits "00010" of the six bits "000100" indicating the timing index can be carried into the synchronization signal, while the remaining high-order bits "0" can be indicated by one of the two synchronization sequences. For example, one synchronization sequence indicates 0 and the other indicates 1. Then, the five bits in the synchronization sequence and the one bit indicated by the synchronization sequence are combined together to indicate the timing index. Alternatively, the high four bits "0001" of the six bits "000100" indicating the timing index can be carried in the synchronization signal, while the remaining low bits "00" can be indicated by one of the four synchronization sequences. For example, the four synchronization sequences can indicate 00, 01, 10, and 11 respectively. The first synchronization sequence can be used to indicate the remaining low bits "00". Then, the four bits in the synchronization sequence and the two bits indicated by the synchronization sequence can be combined together to indicate the timing index.

[0159] In this way, the terminal can determine the time window using the timing index and the first configuration information, and wake up before the time window to prepare for receiving the wake-up signal within the time window, ensuring the normal reception of the wake-up signal. For example, the network device instructs the UE to receive the wake-up signal in the WUR frame with timing index = 10. After the UE receives the wake-up signal in a WUR frame with timing index = 10, the UE can stop receiving signals through the wake-up circuit and enter a sleep state. However, the UE's local clock is still running, and the UE can determine the location of the WUR frame with timing index = 10 based on the local clock. Due to the limited accuracy of the local clock, the UE can only determine the approximate location of the WUR frame with timing index = 10. At this time, the UE can wake up before the approximate location of the WUR frame with timing index = 10 and receive the synchronization signal. Based on the timing index indicated by the newly received synchronization signal, the UE can know the exact location of the next WUR frame with timing index = 10 and receive the wake-up signal in the WUR frame with timing index = 10, further checking whether the received wake-up signal is related to itself.

[0160] Optional, in Figure 6 In the method shown, the WUR link between the network device and the terminal supports multiple data rates for the following two reasons, that is, multiple data rates can be used to transmit wake-up signals on the WUR link.

[0161] Reason 1: The channel conditions between the terminal and network equipment can vary. When the channel conditions between the terminal and network equipment are poor, such as a low signal-to-noise ratio (SNR), the robustness of the WUR link can be improved by reducing the data rate of the wake-up signal. Since reducing the data rate of the wake-up signal is equivalent to increasing the length of the time unit occupied by the wake-up signal, more time-domain diversity can be obtained. Therefore, reducing the data rate of the wake-up signal can improve the robustness of the WUR link. However, when the channel conditions between the terminal and network equipment are good, it is not necessary to reduce the data rate of the wake-up signal; instead, a pre-configured or higher data rate can be used.

[0162] Reason 2: The arrival time of the wake-up signal for each terminal is random. Within a certain period, the number of wake-up signals that the WUR link needs to send may vary. To ensure that terminals at the cell edge can also correctly receive the wake-up signal, optionally, a lower data rate can be configured for the wake-up signal. However, a lower data rate wake-up signal consumes more air interface resources (such as time domain resources). When the number of wake-up signals to be sent is large, using a low data rate may lead to insufficient system capacity. In this case, a high data rate can be considered to send the wake-up signal to increase system capacity in a short period of time. When the number of wake-up signals sent is small, a lower data rate can be used to ensure that terminals at the cell edge can also correctly receive the wake-up signal.

[0163] In this embodiment, the data rate can refer to the ratio between the amount of original information data carried by a signal (such as a wake-up signal) transmitted on the WUR and the number of coded bits corresponding to that signal. Assuming a wake-up signal has 20 bits of data, if it is encoded as 40 bits, the data rate is 20 / 40 = 0.5. If it is encoded as 80 bits, the data rate is 20 / 80 = 0.25. That is, for the same original information, the lower the data rate of the wake-up signal, the more coded bits it corresponds to; conversely, the higher the data rate, the fewer coded bits it corresponds to. Since one coded bit occupies one symbol, and multiple symbols constitute a time unit in a WUR frame, the lower the data rate, the longer the total length of the time unit occupied by the wake-up signal, and the more time units it occupies; conversely, the higher the data rate, the shorter the total length of the time unit occupied by the wake-up signal, and the fewer time units it occupies. Taking a wake-up signal comprising a first wake-up signal and a second wake-up signal as an example, when the data rate of the first wake-up signal is lower than the data rate of the second wake-up signal, the total length of the time units occupied by the first wake-up signal is greater than the total length of the time units occupied by the second wake-up signal, and the number of time units occupied by the first wake-up signal is greater than the number of time units occupied by the second wake-up signal. It should be understood that the total length of the time units occupied by the wake-up signal as described in this application can be understood as the length of the wake-up signal.

[0164] In one possible design, the data rate of the wake-up signal is determined by the synchronization signal. For example, the length of the synchronization signal can indicate the data rate of the wake-up signal within the WUR frame following the synchronization signal. The shorter the length of the synchronization signal, the higher the data rate of the wake-up signal within the WUR frame following the synchronization signal, and the longer the length of the wake-up signal. Conversely, the longer the length of the synchronization signal, the lower the data rate of the wake-up signal within the WUR frame following the synchronization signal, and the shorter the length of the wake-up signal.

[0165] like Figure 10a As shown, the length of synchronization signal 1 is less than the length of synchronization signal 2. The length of the wake-up signal after synchronization signal 1 and before synchronization signal 2 is less than the length of the wake-up signal after synchronization signal 2. The wake-up signal after synchronization signal 1 and before synchronization signal 2 is a high data rate wake-up signal, and the wake-up signal after synchronization signal 2 is a low data rate wake-up signal.

[0166] In this embodiment, the length of the wake-up signal can be characterized by the number of encoded bits after the wake-up signal is encoded. For example, the length of the wake-up signal can be equal to the number of encoded bits of the wake-up signal. The more encoded bits of the wake-up signal, the longer the wake-up signal; conversely, the fewer encoded bits of the wake-up signal, the shorter the wake-up signal.

[0167] In another possible design, indication information, which can be called data rate indication information, can be carried in the synchronization signal. This indication information can indicate the data rate of the wake-up signal within the WUR frame following the synchronization signal. It should be understood that in this possible design, the length of the synchronization signal for each cycle can be the same.

[0168] For example, Figure 10b As shown, synchronization signal 1 carries indication information 1, which indicates that the data rate of the wake-up signal following synchronization signal 1 is a high data rate. Synchronization signal 2 carries indication information 2, which indicates that the data rate of the wake-up signal following synchronization signal 2 is a low data rate. Furthermore, the lengths of synchronization signal 1 and synchronization signal 2 are the same.

[0169] Since the length of the wake-up signal varies with different data rates, in order to meet the above WUR frame format requirements, in one possible design, when the wake-up signal occupies a first time unit, the length of the first time unit can be designed according to the length of the wake-up signal. If the data rate of the wake-up signal in the WUR frame is high, the length of the first time unit in the WUR frame is designed to be shorter; if the data rate of the wake-up signal in the WUR frame is low, the length of the first time unit in the WUR frame is designed to be longer. That is, the time length within a WUR frame is different for different data rates.

[0170] Assuming the first time unit is a WUR slot, for example, Figure 10c As shown, the length of synchronization signal 1 is less than the length of synchronization signal 2. Figure 10c As can be seen, the wake-up signals after synchronization signal 1 and before synchronization signal 2 are high-data-rate wake-up signals. Within WUR frame 1 after synchronization signal 1, there are N=4 WUR slots, with one wake-up signal occupying one WUR slot. The wake-up signals after synchronization signal 2 are low-data-rate wake-up signals. Within WUR frame 2 after synchronization signal 2, there are N=2 WUR slots, with one wake-up signal occupying one WUR slot. The length of the WUR slots in WUR frame 1 is shorter than the length of the WUR slots in WUR frame 2.

[0171] In this possible design, the lengths of the synchronization signals in different periods are different, which can indicate the data rate of the wake-up signal following the synchronization signal. However, since the boundary position of the first time unit in the WUR frame is determined based on the time domain position of the synchronization signal (e.g., start and / or end), different synchronization signal lengths may cause changes in the boundary position of the first time unit. These changes can further prevent the terminal from determining the time position of each first time unit boundary, thus causing the terminal to fail to correctly receive the wake-up signal. To avoid changes in the boundary position of the first time unit, the length between the start position of the synchronization signal and the start position of the first time unit can be designed to be fixed or equal, ensuring that the boundary position of the first time unit remains constant.

[0172] For example, such as Figure 10d As shown, when synchronization signal 1 is used, there is a gap between the end position of synchronization signal 1 and the start position of WUR slot 1 in the WUR frame. When synchronization signal 2 is used, there is no gap between the end position of synchronization signal 2 and the start position of WUR slot 1 in WUR frame 2. In this case, the length of synchronization signal 1 plus the length of the gap equals the length of synchronization signal 2, and the end position of this length is used as the boundary position of the WUR slot, ensuring that the boundary position of the WUR slot is fixed in each cycle. Optionally, regardless of whether synchronization signal 1 or synchronization signal 2 is used, the length of the time domain resources occupied by each synchronization signal is the same, for example, it can be the length of one WUR slot included in WUR frame 1. This makes the structure of the WUR link more organized and is beneficial for network devices to plan the location of signal transmission.

[0173] In another possible design, the length of the first time unit can be set to a fixed value. Different WUR frames contain first time units of the same length, and multiple first time units within the same WUR frame have the same length. The number of time units occupied by a high data rate wake-up signal is less than the number of time units occupied by a low data rate wake-up signal.

[0174] Assuming the first time unit is a WUR slot, such as Figure 10e As shown, synchronization signal 1 corresponds to a high data rate, and synchronization signal 2 corresponds to a low data rate. From Figure 10eAs can be seen, the wake-up signal after synchronization signal 1 has a high data rate. Within WUR frame 1 after synchronization signal 1, there are N=4 WUR slots, with one wake-up signal occupying one WUR slot. The wake-up signal after synchronization signal 2 has a low data rate. Within WUR frame 2 after synchronization signal 2, there are N=4 WUR slots, with the wake-up signal occupying two of them: WUR slot2 and WUR slot3. The length of the WUR slots within different WUR frames is the same, but the number of WUR slots occupied by the wake-up signal after synchronization signal 2 is greater than the number occupied by the wake-up signal after synchronization signal 1.

[0175] In this possible design, the lengths of the synchronization signals of different periods can be the same or different. When the lengths of the synchronization signals of different periods are different, the length between the starting position of the synchronization signal and the starting position of the first time unit can be designed to be fixed or equal to ensure that the boundary position of the first time unit is fixed. For example, as... Figure 10f As shown, when synchronization signal 1 is used, there is a gap between the end position of synchronization signal 1 and the start position of WUR slot 1 in the WUR frame. When synchronization signal 2 is used, there is no gap between the end position of synchronization signal 2 and the start position of WUR slot 1 in WUR frame 1. In this case, the length of synchronization signal 1 plus the length of the gap equals the length of synchronization signal 2, and the end position of this length is the boundary position of the WUR slot, ensuring that the boundary position of the WUR slot is fixed in each cycle.

[0176] It should be understood that Figures 10a-10f The accompanying diagram is for illustrative purposes only and shows only a few WUR frames over several cycles. Figures 10a-10f The number of synchronization signals, WUR frames, and time units included in the WUR frame are unlimited, for example... Figures 10a-10f It can include more synchronization signals, WUR frames, and a single WUR frame can include more time units, etc. Furthermore, Figures 10a-10f The WUR frame format shown includes a wake-up signal but does not include a synchronization signal, unlike... Figures 10a-10f The WUR frame format shown can also be used to... Figures 10a-10f The WUR frame replacement design shown includes a synchronization signal and a wake-up signal, which will not be shown individually here.

[0177] Optionally, in this embodiment of the application, to improve resource utilization, the first frequency domain resources corresponding to the WUR link can be configured / designed to be the same as the second frequency domain resources corresponding to the main link, while the time domain resources corresponding to the WUR link are different from the time domain resources corresponding to the main link. For example, the WUR link corresponds to the aforementioned first time domain resources (i.e., the WUR frame), and the main link corresponds to the second time domain resources. This can achieve TDM transmission and improve resource utilization. For example, as... Figure 7c , Figure 7e as well as Figure 9b As shown, the time-domain resources between adjacent synchronization signals include a first time-domain resource and a second time-domain resource. The first time-domain resource is the WUR frame used to transmit the wake-up signal, and the second time-domain resource is... Figure 7c , Figure 7e as well as Figure 9b The time-domain resources shown in the black box are secondary time-domain resources that can be used to transmit signals on the main link to achieve TDM transmission.

[0178] In TDM transmission scenarios, to reduce mutual interference between signals on the WUR link and the main link, time alignment between the signals on the WUR link and the main link can be designed / configured. To achieve this time alignment, when designing the WUR frame on the WUR link, the length of the first time unit included in the WUR frame should be configured to be greater than the length of the time slot in the frame on the main link. For example, the length of the first time unit can be set to an integer multiple of the length of the time slot included in the second time domain resource corresponding to the main link. This ensures that the boundary of each first time unit is a time slot boundary, thus ensuring boundary alignment. Furthermore, with boundary alignment, each time a first time unit is transmitted, the network device only needs to ensure that no signal (such as an NR signal) is transmitted in the time slot overlapping with that first time unit. This avoids the problem of mutual interference between the signals transmitted in the first time unit and the signals transmitted in the time slot when the boundaries are misaligned, which could affect normal communication.

[0179] For example, in an NR system, the frame transmitted on the main link includes multiple slots, each containing 14 or 12 symbols. In the WUR link, both the synchronization signal and the wake-up signal related to paging carry more than 14 or 12 coded bits. Since one coded bit corresponds to one symbol, the length of the wake-up signal is usually greater than 14 or 12 symbols. Therefore, the length of the WUR signal (such as the synchronization signal or wake-up signal) on the WUR link can be set to be longer than the slot length on the main link. Thus, when aligning the signal boundaries of the WUR link with the NR system, the length of the first time unit in the WUR frame can be an integer multiple of the slot length of the NR system, thereby reducing interference between the signals of the WUR link and the NR system.

[0180] Optionally, in this embodiment, multiple terminals and / or cells may share the same synchronization signal transmission location, which could potentially cause interference. To avoid interference between different terminals and / or cells, the method may further include: the terminal receiving second configuration information sent by the network device. For example, the terminal may receive second configuration information from the network device via the main link, wherein the second configuration information configures reserved resources, and synchronization signals cannot be transmitted on the reserved resources, so that the terminal does not transmit synchronization signals on the reserved resources according to the second configuration information.

[0181] In this embodiment, reserved resources may be included in the candidate transmission positions of the synchronization signal. The reserved resources are a subset of the candidate transmission positions for the synchronization signal. For example, the reserved resources may be candidate transmission positions shared by multiple cells, meaning that some positions in the candidate transmission positions for the synchronization signal are configured not to be used by the terminal to transmit the synchronization signal. Specifically, the candidate transmission positions for the synchronization signal are determined based on the transmission period of the synchronization signal. For example, the candidate transmission positions for the synchronization signal may be positions corresponding to the transmission period of the synchronization signal, and the length between adjacent candidate transmission positions is one transmission period.

[0182] For example, such as Figure 10g As shown, assuming adjacent cells (cell 1 and cell 2) both deploy WUR links, if the time-domain resources of the WUR links of the two cells overlap, such as overlapping synchronization signal transmission locations, then the WUR signals (e.g., synchronization signals) of the two cells may interfere with each other. To avoid interference, the WUR signals of adjacent cells need to be transmitted via TDM, that is, the WUR signals of adjacent cells should ideally be transmitted at different times and locations. Figure 10g As shown, some synchronization signal transmission locations in cell 1 and cell 2 are reserved as resources, and synchronization signals are not transmitted on them, so that the locations that can transmit synchronization signals do not overlap, thereby avoiding inter-cell interference.

[0183] The above primarily describes the solutions provided in this application from the perspective of interaction between various nodes. It is understood that each node, such as a terminal or network device, includes corresponding hardware structures and / or software modules to execute the aforementioned functions. Those skilled in the art should readily recognize that, based on the algorithm steps of the examples described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0184] This application embodiment can group terminals, network devices, etc., into functional modules according to the above method examples. For example, each functional group can correspond to a functional module, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. It should be noted that the grouping of modules in this application embodiment is illustrative and only represents one logical functional grouping; other grouping methods may be used in actual implementation.

[0185] Figure 11 A structural diagram of a communication device 110 is shown. This communication device 110 can be a terminal, a chip within a terminal, or a system-on-a-chip. The communication device 110 can be used to perform the functions of the terminal involved in the above embodiments. As one possible implementation, Figure 11 The communication device 110 shown includes: a receiving unit 1101, and a processing unit 1102;

[0186] The receiving unit 1101 is used to receive a synchronization signal from the network device and a wake-up signal from the network device on the first time domain resource. The first time domain resource includes N first time units of preset length. A wake-up signal occupies at least one of the N first time units of preset length, where N is a positive integer. The boundary position of the first time unit is determined according to the time domain position of the synchronization signal. The wake-up signal is used to indicate paging-related information at least.

[0187] Specifically, the above descriptions of the first time domain resources and the first time unit... Figure 6 All relevant content regarding each step in the illustrated method embodiment can be referenced from the functional description of the corresponding functional module, and will not be repeated here. The communication device 110 is used to execute... Figure 6 The method shown in the diagram has the same function as the wake-up signal sending method described above, and therefore can achieve the same effect.

[0188] As another feasible approach Figure 11 The communication device 110 shown includes a processing module and a communication module. The processing module controls and manages the operation of the communication device 110; for example, the processing module may integrate the functions of the processing unit 1102. The communication module may integrate the functions of the receiving unit 1101 and can be used to support the communication device 110 in executing steps 601 and 602, as well as communicating with other network entities, such as... Figure 4 The communication device 110 illustrates communication between functional modules or network entities. The communication device 110 may also include a storage module for storing program code and data of the communication device 110.

[0189] The processing module can be a processor or a controller. It can implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc. The communication module can be a transceiver circuit or a communication interface, etc. The storage module can be a memory. When the processing module is a processor, the communication module is a communication interface, and the storage module is a memory, the communication device 110 involved in the embodiments of this application can be... Figure 5a or Figure 5b The communication device 500 shown.

[0190] Figure 12 A structural diagram of a communication device 120 is shown. This communication device 120 can be a network device, a chip within a network device, or a system-on-a-chip. The communication device 120 can be used to perform the functions of the network device involved in the above embodiments. As one possible implementation, Figure 12 The communication device 120 shown includes: a transmitting unit 1201, and a processing unit 1202;

[0191] The sending unit 1201 is used to send a synchronization signal to the terminal and a wake-up signal to the terminal on a first time domain resource. The first time domain resource includes N first time units of preset length. A wake-up signal occupies at least one of the N first time units of preset length. N is a positive integer. The boundary position of the first time unit is determined according to the time domain position of the synchronization signal. The wake-up signal is used to indicate paging-related information at least.

[0192] Specifically, the above descriptions of the first time domain resources and the first time unit... Figure 6 All relevant content regarding each step in the illustrated method embodiment can be found in the functional descriptions of the corresponding functional modules, and will not be repeated here. The communication device 120 is used to execute... Figure 6The method shown in the diagram uses the same function of the network device in the wake-up signal sending method as the wake-up signal sending method described above, thus achieving the same effect.

[0193] As another feasible approach Figure 12 The communication device 120 shown includes a processing module and a communication module. The processing module controls and manages the operation of the communication device 120; for example, it can support the communication device 120 in performing management functions. The communication module can integrate the functions of the sending unit 1201 and can be used to support the communication device 120 in performing steps 601 and 602 and communicating with other network entities, such as... Figure 6 The communication device 120 illustrates communication between functional modules or network entities. The communication device 120 may also include a storage module for storing program code and data of the communication device 120.

[0194] The processing module can be a processor or a controller. It can implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc. The communication module can be a transceiver circuit or a communication interface, etc. The storage module can be a memory. When the processing module is a processor, the communication module is a communication interface, and the storage module is a memory, the communication device 120 involved in the embodiments of this application can be... Figure 5a or Figure 5b The communication device 500 shown.

[0195] Figure 13 A structural diagram of a communication system provided in an embodiment of this application is shown below. Figure 13 As shown, the communication system may include: terminal 130 and network device 131. The function of terminal 130 is the same as that of the communication device 110 described above. The function of network device 131 is the same as that of the communication device 120 described above, and will not be described again.

[0196] This application also provides a computer-readable storage medium. All or part of the processes in the above method embodiments can be implemented by a computer program instructing related hardware. This program can be stored in the computer-readable storage medium, and when executed, it can include the processes of the above method embodiments. The computer-readable storage medium can be a terminal of any of the foregoing embodiments, such as an internal storage unit including a data sending end and / or a data receiving end, like a hard disk or memory of the terminal. The computer-readable storage medium can also be an external storage device of the terminal, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the terminal. Further, the computer-readable storage medium can include both the internal storage unit and the external storage device of the terminal. The computer-readable storage medium is used to store the computer program and other programs and data required by the terminal. The computer-readable storage medium can also be used to temporarily store data that has been output or will be output.

[0197] It should be noted that the terms "first" and "second," etc., in the specification, claims, and drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0198] It should be understood that in this application, "at least one (item)" means one or more, "more than one" means two or more, "at least two (items)" means two or three or more, and "and / or" is used to describe the relationship between related objects, indicating that there can be three relationships. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0199] It should be understood that in the embodiments of this application, "B corresponding to A" means that B is associated with A. For example, B can be determined based on A. It should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information. Furthermore, the term "connection" in the embodiments of this application refers to various connection methods, such as direct connection or indirect connection, to achieve communication between devices, and the embodiments of this application do not impose any limitations on this.

[0200] Unless otherwise specified, the term "transmission" in the embodiments of this application refers to bidirectional transmission, encompassing the actions of sending and / or receiving. Specifically, "transmission" in the embodiments of this application includes sending data, receiving data, or both sending and receiving data. In other words, data transmission here includes uplink and / or downlink data transmission. Data may include channels and / or signals; uplink data transmission refers to uplink channel and / or uplink signal transmission, and downlink data transmission refers to downlink channel and / or downlink signal transmission. The terms "network" and "system" in the embodiments of this application refer to the same concept; a communication system is a communication network.

[0201] Through the above description of the embodiments, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the grouping of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0202] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the grouping of modules or units is only a logical functional grouping, and in actual implementation, there may be other grouping methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms.

[0203] The units described as separate components may or may not be physically separate. A component shown as a unit can be one or more physical units; that is, it can be located in one place or distributed in multiple different locations. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0204] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0205] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solutions of the embodiments of this application, essentially, or the parts that contribute to the prior art, or all or part of the technical solutions, can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to cause a device, such as a microcontroller, chip, or processor, to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media for storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

Claims

1. A method for sending a wake-up signal, characterized in that, The method includes: The terminal receives synchronization signals from the network device; The terminal receives a wake-up signal from the network device on a first time domain resource; the first time domain resource includes N first time units of preset length, and a wake-up signal occupies at least one of the N first time units of preset length, where N is a positive integer, and the boundary position of the first time unit is determined according to the time domain position of the synchronization signal; the wake-up signal is used to indicate paging-related information at least; the wake-up signal includes indication information, wherein the indication information is used to indicate the index value of the first time unit occupied by the wake-up signal, or the index value of the starting time unit occupied by the wake-up signal.

2. The method according to claim 1, characterized in that, The first time unit includes multiple symbols, one of which corresponds to one coded bit.

3. The method according to claim 1 or 2, characterized in that, The boundary position of the first time unit is determined based on the time-domain position of the synchronization signal, including: The boundary position of the first time unit is determined based on the starting position of the synchronization signal; or, The boundary position of the first time unit is determined based on the end position of the synchronization signal.

4. The method according to claim 3, characterized in that, The first time unit is the first time unit within the first time domain resource. The boundary position of the first time unit is determined according to the starting position of the synchronization signal, including: the starting position of the first time unit is a position after the starting position of the synchronization signal and at a first preset interval from the starting position of the synchronization signal. The boundary position of the first time unit is determined based on the end position of the synchronization signal, including: the start position of the first time unit is the end position of the synchronization signal; or, the start position of the first time unit is a position after the end position of the synchronization signal and at a second preset interval from the end position of the synchronization signal.

5. The method according to any one of claims 1, 2, and 4, characterized in that, The terminal receives a wake-up signal from the network device, including: The terminal acquires a timing index; the timing index is used to indicate the index value of the first time domain resource; The terminal receives a wake-up signal from the network device within a time window based on the timing index and the first configuration information; wherein, the first configuration information is used to configure the time window; the time window is included in the first time domain resource, or the time window includes the first time domain resource.

6. The method according to claim 5, characterized in that, The timing index is determined based on first information, which is carried in the synchronization signal; or... There is a mapping relationship between the timing index and the synchronization sequence of the synchronization signal, and the timing index is determined based on the mapping relationship and the synchronization sequence of the synchronization signal; or, The timing index is determined based on the synchronization sequence of the second information and the synchronization signal.

7. The method according to claim 6, characterized in that, The timing index is determined based on the synchronization sequence of the second information and the synchronization signal, including: the timing index is determined by M1 information bits and M2 information bits; Wherein, the M1 information bits are carried in the synchronization signal, the second information includes the M1 information bits, the M2 information bits have a mapping relationship with the synchronization sequence of the synchronization signal, the M2 information bits are determined according to the synchronization sequence of the synchronization signal, and M1 and M2 are positive integers.

8. The method according to any one of claims 1, 2, 4, 6, and 7, characterized in that, The starting position of the first time-domain resource is the ending position of the synchronization signal; or, The starting position of the first time domain resource is a position after the end position of the synchronization signal and at a third preset interval from the end position of the synchronization signal.

9. The method according to any one of claims 1, 2, 4, 6, and 7, characterized in that, The end position of the first time-domain resource is the start position of the next synchronization signal adjacent to the synchronization signal; or, The end position of the first time domain resource is the position before the next synchronization signal adjacent to the synchronization signal, and at a fourth preset interval from the start position of the next synchronization signal adjacent to the synchronization signal.

10. The method according to any one of claims 1, 2, 4, 6, and 7, characterized in that, The wake-up signal includes a first wake-up signal and a second wake-up signal; The data rate of the first wake-up signal is lower than the data rate of the second wake-up signal, and the number of first time units occupied by the first wake-up signal is greater than the number of first time units occupied by the second wake-up signal.

11. The method according to any one of claims 1, 2, 4, 6, and 7, characterized in that, The terminal receives second configuration information from the network device; The second configuration information configures reserved resources, on which the synchronization signal cannot be sent.

12. The method according to claim 11, characterized in that, The reserved resources are included in the candidate transmission positions of the synchronization signal, which are determined according to the transmission period of the synchronization signal.

13. The method according to any one of claims 1, 2, 4, 6, and 7, characterized in that, The waveform of the synchronization signal is the same as the waveform of the wake-up signal; and / or, The modulation method of the synchronization signal is the same as that of the wake-up signal.

14. The method according to any one of claims 1, 2, 4, 6, and 7, characterized in that, The modulation scheme of the synchronization signal and the modulation scheme of the wake-up signal are both an on / off key control (OOK) and / or... The waveform of the synchronization signal and / or the waveform of the wake-up signal is OOK.

15. The method according to any one of claims 1, 2, 4, 6, and 7, characterized in that, The wake-up signal indicates that one or more terminals requiring paging include the terminal; the method further includes: The terminal receives first information from the network device and / or performs random access. The first information includes one or more of the following: paging downlink control information (DCI), paging message, and paging advance indication (PEI).

16. The method according to claim 15, characterized in that, The terminal includes a first module and a second module. The terminal receives the synchronization signal and the wake-up signal through the first module, and the terminal receives the first information and / or performs random access through the second module.

17. The method according to claim 16, characterized in that, The terminal receives the synchronization signal and the wake-up signal through the first link, and the frequency domain resources corresponding to the first link include the first frequency domain resources; The terminal receives first information from the network device and / or performs random access through the second link, and the frequency domain resources corresponding to the second link include second frequency domain resources.

18. The method according to claim 17, characterized in that, The first frequency domain resource may be the same as or different from the second frequency domain resource.

19. A communication system, characterized in that, The communication system includes: a terminal and network equipment; The network device is configured to send a synchronization signal to the terminal and a wake-up signal to the terminal on a first time domain resource. The first time domain resource includes N first time units of preset length, and a wake-up signal occupies at least one of the N preset time units, where N is a positive integer. The boundary positions of the first time units are determined based on the time domain position of the synchronization signal. The wake-up signal is used to indicate at least paging-related information. The wake-up signal includes indication information, wherein the indication information indicates the index value of the first time unit occupied by the wake-up signal, or the index value of the starting time unit occupied by the wake-up signal. The terminal is configured to receive a synchronization signal from the network device and, on a first time domain resource, receive a wake-up signal from the network device.

20. A communication device, characterized in that, The communication device includes a processor and a communication interface, the processor and the communication interface being configured to support the communication device in performing the method as described in any one of claims 1-18.

21. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 1-18.

22. A computer program product, characterized in that, The computer program product includes computer instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 1-18.

23. A chip, characterized in that, The chip includes a processor and a memory, the processor being coupled to the memory, the processor being configured to read and execute program instructions stored in the memory to implement the method as described in any one of claims 1-18.

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