Method, device and system for monitoring wake-up signal

Abstract

The invention provides a method, a device and a system for monitoring a wake-up signal, relates to the technical field of wireless communication, and is used for solving the technical problem of how to monitor a short message in a PO in a scene that a terminal monitors the wake-up signal so as to better facilitate energy conservation of the terminal and a network. The scheme comprises: determining a first time-frequency resource position where a first wake-up signal is located, the first time-frequency resource position being located before a first paging opportunity (PO) in a first monitoring period of a first terminal, the first PO being located in a first operation duration of the first terminal, and the first time-frequency resource position and the first PO being at least spaced by a first duration; the first operation duration is the duration of monitoring a physical downlink control channel (PDCCH) by the first terminal. And monitoring a first wake-up signal on the first time-frequency resource position, wherein the first wake-up signal indicates whether the first terminal is awakened or not. According to the scheme, the paging message on the first PO within the first operation duration can be monitored after the first terminal is awakened, and the energy consumption of the terminal is saved.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and in particular to a method, apparatus and system for monitoring wake-up signals. Background Technology

[0002] To conserve terminal power, New Radio (NR) systems introduce Wake-Up Signal (WUS) and Low Power-Wake-Up Signal (LP-WUS). The difference between WUS and LP-WUS is that WUS is received by the terminal's primary receiver, while LP-WUS is received by the terminal's secondary receiver. WUS is typically used when the terminal is configured with DRX (Discontinuous Reception) to instruct the terminal whether to activate a drx-on-duration timer during Discontinuous Reception (DRX) to enter the active period. LP-WUS is used by the secondary receiver to monitor signals when the terminal's primary receiver is in sleep mode. Upon receiving LP-WUS, the terminal can decide whether to wake up the primary receiver to receive and process downlink signals. If no LP-WUS signal is received, or if the LP-WUS signal indicates no wake-up, the terminal will keep the primary receiver in sleep mode.

[0003] In Radio Resource Control (RRC) connected mode, if the terminal capability supports it, the terminal can receive system message change indications or public warning system (PWS) notifications via paging messages. Typically, a terminal in RRC connected mode can listen for any paging occasion (PO) within a listening cycle to obtain paging messages. In LP-WUS scenarios, the PO listened to by a terminal using the connected (C)-DRX mechanism may be within or outside the terminal's active period. Figure 1 As shown in (a), assume the POs monitored by the terminal include PO1, PO2, and PO3. PO1 and PO3 are located outside the terminal's active period, during which the terminal is in sleep mode. If the terminal needs to monitor PO1 or PO3, it must be in a wake-up state, which is detrimental to energy saving. Furthermore, if the POs and the timer that wakes the terminal are far apart, the terminal needs to ramp up again after entering sleep mode to monitor POs, resulting in two power consumption transitions, which is also detrimental to energy saving. Alternatively, as... Figure 1As shown in (b), if LP-WUS keeps indicating no wake-up, the terminal also needs to periodically and actively wake up the master receiver to listen to PO, and cannot truly enter sleep state.

[0004] In summary, how to make listening to short messages in POs in LP-WUS scenarios more conducive to energy saving for both terminals and networks is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] This application provides a method, apparatus, and system for monitoring wake-up signals, which addresses the technical problem of how to monitor short messages in the PO (Post Message) more effectively for terminal and network energy saving in scenarios where the terminal is monitoring wake-up signals.

[0006] A first aspect of this application provides a method for monitoring a wake-up signal. The method includes: a first terminal determining a first time-frequency resource location where a first wake-up signal is located. The first time-frequency resource location is situated before a first paging occasion (PO) within a first monitoring period of the first terminal, and the first PO is situated within a first runtime of the first terminal. The first time-frequency resource location and the first PO are at least separated by a first runtime. The first runtime is the duration for which the first terminal monitors the Physical Downlink Control Channel (PDCCH). The first terminal monitors the first wake-up signal at the first time-frequency resource location. The first wake-up signal indicates whether the first terminal is awake.

[0007] In this embodiment, since the first time-frequency resource location receiving the first wake-up signal is located before the first PO within the first listening period of the first terminal, this ensures that when the first wake-up signal indicates that the first terminal is to be woken up, the first runtime of the first terminal after being woken up covers at least one PO (i.e., the first PO) within the first listening period. Thus, when the first terminal listens to the first wake-up signal at the first time-frequency resource location, if the first wake-up signal indicates that the first terminal is to be woken up, the first terminal can receive a paging message on the first PO within the first runtime after being woken up. For the first terminal, there is no need to wake up at other times to listen to a PO located outside the first runtime; the first terminal can enter a sleep state for a long time, or the first terminal can listen to the PO within the first runtime after being woken up by the first wake-up signal without needing to be woken up again, which is beneficial for terminal energy saving.

[0008] In one possible implementation of this application, the first terminal includes a main receiver and a secondary receiver. The first wake-up signal is a wake-up signal received by the secondary receiver of the first terminal.

[0009] In one possible implementation of this application, the first terminal includes a main receiver and a secondary receiver. The secondary receiver is used to receive a first wake-up signal, which indicates whether to wake up the main receiver. The first runtime is the wake-up duration of the main receiver. This ensures that when the first wake-up signal indicates that the main receiver of the first terminal should be woken up, within the first runtime of the main receiver being woken up, the first terminal can utilize the main receiver to receive the paging message sent by the network side on the first PO, so as to receive the system message change indication and / or PWS notification indication.

[0010] In one possible implementation of this application, when the first wake-up signal is used to indicate whether to wake up the master receiver, the first PO is any PO among the multiple POs of the first terminal located within the first runtime.

[0011] In one possible implementation of this application, a first wake-up signal indicates whether the first terminal should wake up the first timer during the discontinuous reception period in the connected state. The first runtime is the runtime of the first timer, and the first timer indicates the duration for which the first terminal listens to the Physical Downlink Control Channel (PDCCH) during the discontinuous reception period in the connected state. The first time-frequency resource location (PDR) is located before the start position of the first timer, and the start position of the first timer is close to the first PO during the first listening period. The first PO is the PO of any of a plurality of terminals, including the first terminal. For example, the first timer can be a DRX timer. When the first terminal is configured with a C-DRX mechanism, the first wake-up signal indicates whether the first terminal should enable the DRX timer so that when the DRX timer is enabled, the first terminal can listen to paging messages on the first PO during the first runtime of the DRX timer. In this scenario, the first PO is the PO of the first terminal or the PO of other terminals besides the first terminal.

[0012] In one possible implementation of this application, the first wake-up signal indicates the start of a first timer. The method provided in this application further includes: the first terminal starts the first timer after a first delay based on the first wake-up signal. The first delay can be a duration negotiated between the first terminal and the network device, a delay indicated by the network device, or a delay predefined by the protocol; this application does not limit this.

[0013] This can save power consumption of the first terminal.

[0014] In one possible implementation of this application, a first wake-up signal instructs the first terminal to wake up. The method provided in this embodiment further includes: the first terminal waking up its main receiver or a first timer according to the first wake-up signal; the first terminal receiving a first paging message on a first PO within a first runtime period, the first paging message carrying a system message change notification and / or a public warning system (PWS) notification indication. This allows the first terminal to listen to the system message change notification and / or the public warning system (PWS) notification indication on the first PO within the first runtime period, eliminating the need for additional wake-up for listening to the system message change notification and / or the public warning system (PWS) notification indication, thus saving power consumption of the first terminal.

[0015] In one possible implementation of this application, the method provided in this application embodiment may further include: if a first wake-up signal is not detected at the first time-frequency resource location, or if the wake-up information carried in the first wake-up signal indicates that the first terminal is not woken up, then a second paging message is received on the second PO within the first listening period. The second paging message includes a listening system message change indication and / or a public early warning system PWS notification indication. The second PO is the last PO among the multiple POs of the first terminal within the first listening period.

[0016] In one possible implementation of this application, the method provided in this application embodiment may further include: the first terminal determining, according to the format of the first wake-up signal, to listen to the PDCCH or to listen to the PDCCH scrambled with the Paging Radio Network Temporary Identifier (P-RNTI) during the first runtime period;

[0017] The first wake-up signal in the first format is used to indicate listening to the PDCCH within the first runtime. The second format of the first wake-up signal is used to indicate listening to the P-RNTI scrambled PDCCH within the first runtime.

[0018] In one possible implementation of this application, the method provided in this application embodiment may further include: the format of the first wake-up signal is determined by the length of the first wake-up signal; or, the format of the first wake-up signal is indicated by the first indication information carried by the first wake-up signal; or, the format of the first wake-up signal is determined by the waveform sequence grouping during the modulation of the first wake-up signal.

[0019] In one possible implementation of this application, the first terminal determines the location of the first time-frequency resource by: the first terminal receiving a first configuration message from a network device, the first configuration message including information indicating the location of the first time-frequency resource; or, the first terminal determining the location of the first time-frequency resource according to a calculation method agreed upon in the protocol. Alternatively, the location of the first time-frequency resource may be determined through negotiation between the first terminal and the network device, or the location of the first time-frequency resource may be determined by the first terminal, and then the first terminal sends the location of the first time-frequency resource to the network device after determining it.

[0020] In one possible implementation of this application, the location of the first time-frequency resource is determined by the location of the PO among the multiple POs of the first terminal within the first listening period, which is located within the first runtime. This scheme allows the first terminal to determine the first time-frequency resource based on the location of the PO.

[0021] In one possible implementation of this application, the location of the first PO within a first runtime is determined by a first time-frequency resource location. This scheme allows the location of the first PO within a first runtime to be determined by the already determined first time-frequency resource location.

[0022] In one possible implementation of this application, the method provided in this embodiment may further include: the first wake-up signal carrying a system message change indication and / or a public warning system (PWS) notification indication. This allows the system message change indication and / or PWS notification indication to be obtained via the first wake-up signal, reducing the number of times messages are sent over the network.

[0023] In one possible implementation of this application, the first wake-up signal also carries wake-up information, which indicates whether to wake up the first terminal.

[0024] In one possible implementation of this application, the method provided in this embodiment may further include: a first terminal determining a second time-frequency resource location for receiving a second wake-up signal. The second time-frequency resource location is located before a third point of sale (PO) within a second listening period of the first terminal, and is at least a second time interval from the third PO. The third PO is the PO of any of a plurality of terminals, including the first terminal. The second wake-up signal is listened to at the second time-frequency resource location. The second wake-up signal has a second format and carries common information. The second time-frequency resource location is a common time-frequency resource location. The second wake-up signal is used to indicate the activation of a second timer. The second timer is used to instruct the first terminal to listen to a P-RNTI-scrambled PDCCH at the third PO within the runtime of the second timer.

[0025] In one possible implementation of this application, the method provided in this application embodiment may further include: a first terminal determining a second time-frequency resource location for receiving a second wake-up signal, including: the first terminal receiving second configuration information from a network device, the second configuration information including information for indicating the second time-frequency resource location, or the first terminal determining the second time-frequency resource location according to a scheme for calculating the time-frequency resource location for receiving the wake-up signal as agreed in the protocol, or the second time-frequency resource location being determined by the location of a third PO.

[0026] In one possible implementation of this application, the method provided in this application embodiment further includes: when the first terminal exits the listening wake-up signal mechanism, receiving a fourth paging message on the fourth PO of the first terminal, wherein the fourth paging message carries a system message change indication and / or a public early warning system (PWS) notification indication.

[0027] Secondly, this application provides a method for monitoring a wake-up signal, the method comprising: a network device sending a first wake-up signal at a first time-frequency resource location, the first time-frequency resource location being located before a first paging opportunity (PO) within a first monitoring period of a first terminal, and the first PO being located within a first runtime of the first terminal, the first time-frequency resource location and the first PO being at least spaced apart by a first duration; the first runtime being the duration for which the first terminal monitors the physical downlink control channel (PDCCH); the first wake-up signal indicating whether to wake up the first terminal.

[0028] In one possible implementation of this application, the method provided in this application embodiment further includes: a network device sending first configuration information to a first terminal, the first configuration information including: information for indicating the location of the first time-frequency resource.

[0029] In one possible implementation of this application, the method provided in this embodiment further includes: a network device sending second configuration information to the first terminal, the first configuration information including: information for indicating a second time-frequency resource location, the second time-frequency resource location being located before a third PO within a second listening period of the first terminal, and spaced at least a second duration from the third PO, the third PO being the PO of any of the plurality of terminals; and sending a second wake-up signal in a second format at the second time-frequency resource location. The second wake-up signal carries common information, the second time-frequency resource location is a common time-frequency resource location, the second wake-up signal is used to indicate the activation of a second timer, and the second timer is used to indicate that the first terminal listens for P-RNTI scrambled PDCCH at the third PO within the runtime of the second timer.

[0030] In one possible implementation of this application, the method provided in this application embodiment further includes: a network device sending a paging message on a first PO or a second PO, the paging message carrying a system message change notification and / or a public early warning system (PWS) notification indication, wherein the second PO is the last PO among the multiple POs of the first terminal during the first monitoring period.

[0031] In one possible implementation of this application, the method provided in this application embodiment further includes: when the network device exits the listening wake-up signal mechanism of the first terminal, the network device sends a system message change and / or ETWS / CMAS indication on the fourth PO of the first terminal.

[0032] Thirdly, embodiments of this application provide a communication device that can implement the methods in the first aspect or any possible implementation of the first aspect, and therefore can also achieve the beneficial effects of the first aspect or any possible implementation of the first aspect. This communication device can be a first terminal, or it can be a device that supports the first terminal in implementing the methods in the first aspect or any possible implementation of the first aspect, such as a chip applied in the first terminal. This device can implement the above methods through software, hardware, or by hardware executing corresponding software.

[0033] Fourthly, embodiments of this application provide a communication device that can implement the methods in the second aspect or any possible implementation of the second aspect, and therefore can also achieve the beneficial effects of the second aspect or any possible implementation of the second aspect. This communication device can be a network device, or an apparatus that supports the network device in implementing the methods in the second aspect or any possible implementation of the second aspect, such as a chip applied in a network device. This device can implement the above methods through software, hardware, or by hardware executing corresponding software.

[0034] Fifthly, embodiments of this application provide a computer-readable storage medium storing a computer program or instructions that, when executed on a computer, cause the computer to perform a method for listening for a wake-up signal as described in any of the possible implementations of the first aspect.

[0035] Sixthly, embodiments of this application provide a computer-readable storage medium storing a computer program or instructions that, when executed on a computer, cause the computer to perform a method for listening for a wake-up signal as described in any of the possible implementations of the second aspect.

[0036] In a seventh aspect, embodiments of this application provide a computer program product including instructions that, when executed on a computer, cause the computer to perform a method for listening for a wake-up signal as described in the first aspect or various possible implementations of the first aspect.

[0037] Eighthly, embodiments of this application provide a computer program product including instructions that, when executed on a computer, cause the computer to perform a method for listening for a wake-up signal as described in the second aspect or various possible implementations of the second aspect.

[0038] Ninthly, embodiments of this application provide a communication device for implementing various methods in various possible designs of any of the first or second aspects described above. The communication device may be the first terminal described above, or a device including the first terminal, or a component (e.g., a chip) applied in the first terminal. Alternatively, the communication device may be the network device described above, or a device including the network device, or a component (e.g., a chip) applied in the network device. The communication device includes modules and units corresponding to the methods described above. These modules and units may be implemented in hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the functions described above.

[0039] It should be understood that the communication device described in aspect nine above may further include a bus and a memory, the memory being used to store code and data. Optionally, at least one processor communication interface and the memory are coupled to each other.

[0040] In a tenth aspect, embodiments of this application provide a communication device comprising: at least one processor. The at least one processor is coupled to a memory, and when the communication device is in operation, the processor executes computer execution instructions or programs stored in the memory to cause the communication device to perform any of the various possible designs of the first aspect or any other aspect thereof. For example, the communication device may be a first terminal, or a chip applied in a first terminal.

[0041] Eleventhly, embodiments of this application provide a communication device comprising: at least one processor. The at least one processor is coupled to a memory, and when the communication device is in operation, the processor executes computer execution instructions or programs stored in the memory to cause the communication device to perform any of the methods described in the second aspect or any of the various possible designs of the second aspect. For example, the communication device may be a network device or a chip applied in a network device.

[0042] It should be understood that the memory described in any of the tenth to eleventh aspects can also be replaced by a storage medium, and the embodiments of this application do not limit this.

[0043] In one possible implementation, the memory described in any one of aspects ten to eleven can be a memory inside the communication device. Of course, the memory can also be located outside the communication device, but at least one processor can still execute computer execution instructions or programs stored in the memory.

[0044] In a twelfth aspect, embodiments of this application provide a communication device comprising one or more modules for implementing the method of any one of the first and second aspects described above. The one or more modules may correspond to the various steps in the method of any one of the first and second aspects described above.

[0045] In a thirteenth aspect, embodiments of this application provide a chip system including a processor. The processor reads and executes a computer program stored in a memory to perform the methods in the first aspect and any possible implementation thereof. Optionally, the chip system may be a single chip or a chip module composed of multiple chips. Optionally, the chip system further includes a memory, which is connected to the processor via circuitry or wires. Further optionally, the chip system includes a communication interface. The communication interface is used to communicate with other modules outside the chip.

[0046] In a fourteenth aspect, embodiments of this application provide a chip system including a processor. The processor reads and executes a computer program stored in a memory to perform the methods of the second aspect and any possible implementation thereof. Optionally, the chip system may be a single chip or a chip module composed of multiple chips. Optionally, the chip system further includes a memory, which is connected to the processor via circuitry or wiring. Further optionally, the chip system includes a communication interface. The communication interface is used to communicate with other modules outside the chip.

[0047] In a fifteenth aspect, embodiments of this application provide a communication system comprising: a first terminal and a network device. The first terminal is configured to execute the method of the first aspect and any possible implementation thereof. The network device is configured to execute the method of the second aspect and any possible implementation thereof.

[0048] Any of the devices, computer storage media, computer program products, chips, or communication systems provided above are used to execute the corresponding methods provided above. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects of the corresponding solutions in the corresponding methods provided above, and will not be repeated here. Attached Figure Description

[0049] Figure 1 This is a timing diagram of a terminal listening to a PO provided in an embodiment of this application;

[0050] Figure 2 This is a timing diagram of a terminal listening SI change indication provided in an embodiment of this application;

[0051] Figure 3 This is a schematic diagram of a DRX cycle provided in an embodiment of this application;

[0052] Figure 4 This is a schematic diagram of the terminal structure provided in the embodiments of this application;

[0053] Figure 5 This application provides a schematic diagram of the architecture of a communication system.

[0054] Figure 6 A flowchart illustrating a method for monitoring wake-up signals provided in an embodiment of this application;

[0055] Figure 7 A timing diagram of the listening wake-up signal provided in an embodiment of this application;

[0056] Figure 8 A timing diagram of another listening wake-up signal provided in an embodiment of this application;

[0057] Figure 9 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0058] Figure 10 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0059] Figure 11 The present application provides a chip structure. Detailed Implementation

[0060] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B; "and / or" in this text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0061] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this embodiment, unless otherwise stated, "a plurality of" means two or more.

[0062] 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 steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0063] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner to facilitate understanding.

[0064] 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 / 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. Both "...when" and "if" indicate that a corresponding action will be taken under certain objective circumstances. They are not time limits, nor do they require a judgment action to be taken when the action is taken, nor do they imply any other limitations.

[0065] Before introducing the embodiments of this application, the relevant terms involved in this application are explained as follows:

[0066] (a) Radio Resource Control (RRC) Status

[0067] In an NR system, a terminal may exist in one or more of the following three states: RRC connected state (RRC_CONNECTED state), RRC idle state (RRC_IDLE state), and RRC inactive state (RRC_INACTIVE state). For example, the RRC inactive state can also be called the RRC deactivation mode.

[0068] For example, when a terminal accesses the network and establishes an RRC connection with the serving base station, it is in the RRC connection state. At this time, the terminal can normally exchange data and signaling with the serving base station.

[0069] For example, for a terminal in the RRC idle state, the serving base station will release the terminal's context information, and the time required for the terminal to enter the RRC connected state from the RRC idle state is relatively long.

[0070] The RRC inactive state is a state between the RRC connected state and the RRC idle state. The RRC_INACTIVE state is only known to the RAN; from the CN's perspective, the terminal is already in the RRC connected state.

[0071] In the INACTIVE state, the RRC and NAS contexts are still partially retained in the terminal, base station, and core network. The terminal state is almost identical to that of the IDLE state, and it can quickly transition from the RRC_INACTIVE state to the RRC_CONNECTED state, thereby reducing signaling overhead. For example, a terminal in the RRC inactive state can initiate RRC connection recovery (e.g., by sending an RRC connection recovery request message) to attempt to enter the RRC connected state. Compared to the process of a terminal transitioning from the RRC idle state to the RRC connected state, the transition from the RRC inactive state to the RRC connected state achieves lower latency.

[0072] (ii) Paging

[0073] In a communication system, network devices can use paging to notify terminals in RRC idle or RRC inactive states to receive paging messages. These network devices can be access network devices or core network devices. For example, an access network device initiating a paging (also known as RAN paging) can paging terminals in RRC inactive states. Similarly, a core network device initiating a paging (also known as core network (CN) paging) can paging terminals in RRC idle or RRC inactive states. In a CN paging scenario, the core network device instructs the access network device to paging terminals in RRC idle states. Upon receiving the instruction from the core network device, the access network device then initiates a CN paging for the terminals in RRC idle states.

[0074] For example, a terminal in RRC_IDLE state may receive a paging triggered by the core network (CN). A terminal in RRC_INACTIVE state may receive a paging triggered by the CN and / or the RAN. When a terminal receives a paging initiated by the RAN, the terminal initiates the RRC Connection Resume procedure and determines the resumecause based on the AI ​​(Access Identity) value configured at the upper layer. When a terminal in RRC_INACTIVE state receives a paging initiated by the CN, the terminal moves to RRC_IDLE state and initiates RRC connection establishment.

[0075] For example, RAN paging can be understood as paging initiated by the RAN.

[0076] For example, CN paging can be understood as paging initiated by CN.

[0077] Terminals in RRC idle or RRC inactive states listen to their own Point of Purchase (PO) during each paging cycle to determine if the network device has paging them. A paging cycle includes one paging occasion (PO), and one PO can correspond to one or more terminals; that is, one or more terminals can listen to the same PO. Terminals can calculate their own PO location based on their identification information and paging-related parameters. Different terminals may calculate the same or different PO locations.

[0078] For example, the paging timing in embodiments of this application may include one or more radio frames, subframes, time slots, etc., and is not limited.

[0079] For example, the time-domain resources involved in the embodiments of this application can be a time interval, such as a wireless frame, subframe, slot, symbol, mini-slot, etc., and there is no limitation thereto.

[0080] For example, the purpose of paging is to allow the network to reach terminals in the RRC_IDLE and RRC_INACTIVE states via paging messages, and / or to notify terminals in the RRC_IDLE, RRC_INACTIVE, and RRC_CONNECTED states of system message changes and ETWS / CMAS indications via short messages. The paging DCI may include scheduling information for the paging message (including time-frequency domain information of the resources scheduling the paging message and other scheduling information) and / or the short message. This scheduling information is used to schedule the paging message; for example, it may include time-frequency resource information or modulation and coding information for the paging message. The short message may indicate system information update indications (i.e., whether system information has changed), earthquake and tsunami warning system (ETWS) notifications, or commercial mobile alert service (CMAS) notifications, etc.

[0081] For example, paging messages can be sent on the Physical Downlink Shared Channel (PDSCH). Short messages, on the other hand, can be sent directly on the Physical Downlink Control Channel (PDCCH) (i.e., DCI).

[0082] For example, there can be one or more paging frames (PF) within a discontinuous reception (DRX) cycle, and there can be one or more paging occasions (PO) under each PF.

[0083] 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. For a network device, a paging process may include: the network device (such as an access network device) calculating the paging occasion (PO) corresponding to the terminal, and sending a physical downlink control channel (PDCCH) carrying downlink control information (DCI) to the terminal on the PO. This DCI can be used to indicate whether a physical downlink shared channel (PDSCH) carrying the paging message has been scheduled. If the DCI indicates that a PDSCH carrying the paging message has been scheduled, the network device sends the PDSCH carrying the paging message on the time-frequency resource indicated by the DCI.

[0084] For a terminal, a paging process may include: the terminal calculating its corresponding PO, listening for a DCI scrambled with a paging-radio network temporary identity (P-RNTI) (e.g., DCI1_0) within the calculated PO; if a P-RNTI-scrambled DCI is detected, and this DCI indicates that a PDSCH carrying a paging message has been scheduled, the terminal receives the PDSCH carrying the paging message on the time-frequency resource indicated by the DCI, and determines whether it has been paged based on the paging message carried by the PDSCH. The paging message may carry the identification information of the paged terminal device. If the paging message received by the terminal device carries its own identification information, it determines that it has been paged; if the paging message received by the terminal device does not carry its own identification information, it determines that it has not been paged. If the terminal is paged, it can initiate a random access procedure, transitioning from an idle or inactive state to a connected state.

[0085] A paging occasion (PO) is the time-domain location, or time interval, of a specific DCI (Distributed Radio Interface) that is monitored. This specific DCI is scheduled to carry a PDSCH (Paging Message Distributed Message). This specific DCI can be DCI1_0 scrambled by P-RNTI. For example, a PO can refer to a specific subframe on which the network device transmits P-RNTI-scrambled DCI1_0. Correspondingly, the terminal can listen for and receive P-RNTI-scrambled DCI1_0 on this subframe. Upon receiving P-RNTI-scrambled DCI1_0, the terminal receives the PDSCH carrying the paging message on the time-frequency resource indicated by DCI1_0 and determines whether it has been paged based on the paging message. Determining the PO location involves first identifying the paging frame (PF) to which the PO belongs, and then determining the PO's location based on its relative position within the PF. A PF is a radio frame, and a PF can include one or more POs. A PO can occupy one or more time slots.

[0086] For example, from the perspective of a terminal monitoring paging, currently, for terminals configured with DRX in RRC idle or RRC inactive states, to save energy, the terminal monitors one PO in each DRX cycle. A PO can include a set of PDCCH monitoring occasions. A paging frame (PF) can be a radio frame and can contain one or more POs or the origin of one or more POs.

[0087] For example, under normal circumstances, for terminals in the RRC idle state or RRC inactive state, the terminal wakes up once in its corresponding PO during each paging cycle (i.e., listens for paging), and pays attention to the scheduling information of paging messages and short messages.

[0088] For example, the downlink control information (DCI) corresponding to the paging message is scrambled by the paging radio network temporary identifier (P-RNTI).

[0089] For example, the PO can be determined by the terminal's identifier (e.g., UE_ID). For example, the PF can be determined by the following formula:

[0090] (SFN + PF_offset) mod T = (T div N)*(UE_ID mod N) (Formula 1)

[0091] For example, the index of PO (index(i_s)) can be obtained by the following formula:

[0092] i_s = floor(UE_ID / N) mod Ns. (Formula 2)

[0093] Among them, the UE can determine the PO corresponding to the UE in the PF through i_s.

[0094] For example, the meanings of the parameters in the formula above are as follows:

[0095] (1) T represents the DRX period of the UE.

[0096] (2) N represents the number of PFs in the DRX cycle.

[0097] (3) Ns represents the number of POs in a PF.

[0098] (4) UE_ID, for example, is 5th generation (5G) - system or service or short (S) - temporary mobile subscription identifier (TMSI) mod 1024, that is, UE_ID is 5G-S-TMSI mod constant 1. The constant 1 is 1024 or 4096 or 8192 or 32768, etc. mod represents the modulo operation. If the UE does not have a 5G-S-TMSI, for example, when the UE has not yet registered with the network, the UE should use UE_ID = 0.

[0099] (5) PF_offset represents the offset used to determine PF.

[0100] For example, parameter values ​​such as N, Ns, and PF_offset can be broadcast by the network in system information (e.g., system information block 1, SIB1).

[0101] The DRX period T of a UE can be determined according to the following rules, which are the shortest DRX periods that can be used by UEs in RRC idle state and UEs in RRC inactive state. For example, UEs in RRC idle state use the shorter DRX period of the following a and b; UEs in RRC inactive state use the shortest DRX period of the following a, b and c.

[0102] a. The default DRX cycle broadcast in system messages (such as SIB1).

[0103] b. UE-specific DRX cycle negotiated between the UE and the core network.

[0104] c. The UE-specific DRX cycle sent by the network (e.g., RAN) to the UE.

[0105] (III) System Message Changes

[0106] System messages are information broadcast periodically by the base station on the downlink. They contain basic configuration information of the base station, key parameters of the air interface (Uu interface) protocol layer, etc.

[0107] System message changes (except for ETWS / CMAS) occur only in specific radio frames, using the concept of a modification period. The modification period can be {2, 4, 8, 16} default paging cycles. Within a modification period, the same system message can be sent once or multiple times, determined by its scheduling. The modification period is configured within the system message.

[0108] Network side:

[0109] -When the network changes (partially) system messages, such as Figure 2 As shown, the base station can first send a System Message Change Indicator (SCI) to the terminal within a modification cycle 1 (also known as a System Message Change Notification). This SCI informs the terminal that it needs to reread the system information in the following system change cycle. Next, the base station can broadcast the updated SI in modification cycle 2. Modification cycle 2 occurs after modification cycle 1, where the base station sends the SI (System Information) change indication.

[0110] Terminal side:

[0111] If the terminal receives a system message change instruction within a modification cycle 1, the terminal will obtain a new system message at the beginning of the next modification cycle 2. Until a new system message is obtained, the terminal will use the previously obtained system message.

[0112] Terminals in the RRC_IDLE and RRC_INACTIVE states should listen for SI change indications on their own POs in each DRX cycle. For terminals in the RRC_CONNECTED state, if a common search space for paging (including pagingSearchSpace, searchSpaceSIB1, and searchSpaceOtherSystemInformation) is provided on the active BWP for paging monitoring, then terminals in the RRC_CONNECTED state should monitor for SI change indications at least once per modification cycle during any paging event. Any paging event includes the terminal's own PO in each modification cycle, as well as POs of other terminals.

[0113] (iv) ETWS / CMAS Instructions

[0114] The NR connected to the 5GC supports the Public Warning System (PWS) via system message broadcasting. The NR is responsible for scheduling and broadcasting warning messages, and page terminals to provide them with instructions to broadcast warning messages.

[0115] Earthquake and Typhoon Warnings: ETWS is a public early warning system designed to meet the management needs of early warning notifications related to earthquake and / or typhoon events. ETWS early warning notifications can be a primary notification (short notification) or a secondary notification (providing detailed information).

[0116] - Commercial Mobile Warning System: CMAS is a public warning system for issuing multiple concurrent warning notifications (defined warning notification types: Presidential, Imminent Threat, Public Safety, Child Abduction Emergency, and State / Local WEA Test).

[0117] ETWS in RRC_IDLE or RRC_INACTIVE, or terminals with CMAS capability, will monitor for indications regarding PWS notifications during their own paging time in each DRX cycle. If a common search space is provided to terminals on the Bandwidth Part (BWP) for paging monitoring, then ETWS in RRC_CONNECTED, or terminals with CMAS capability, should monitor for indications regarding PWS notifications during any paging time in each default Paging Cycle.

[0118] For short message reception during paging, the terminal monitors the PDCCH monitoring timing used for paging.

[0119] Paging that indicates an ETWS / CMAS notification will trigger the retrieval of system messages (without delay until the next modification cycle).

[0120] (V) DRX

[0121] The basic mechanism of DRX is to configure a DRX cycle for a terminal in the RRC CONNECTED state. For example... Figure 3As shown, the DRX cycle consists of "On Duration" (wake-up period) and "Opportunity for DRX" (sleep period). During "On Duration," the terminal listens for and receives the PDCCH. During "Opportunity for DRX," the terminal does not receive the PDCCH to reduce power consumption. The time when the terminal enters sleep mode and does not monitor the PDCCH to save power is considered the sleep period. The "On Duration" period is when the terminal listens for the PDCCH; during this time, the terminal is in a wake-up state, which is considered the active time. The active time includes the runtime of the duration timer (onDurationTimer), the continuous reception time of the terminal when the DRX inactivity timer (drx-inactivity timer) has not expired, and the continuous reception time of the terminal while waiting for retransmission (i.e., the runtime of the DRX retransmission timer drx-RetransmissionTimer).

[0122] The DRX cycle consists of two parts:

[0123] 1) OnDuration time: During this period, the terminal is in DRX active time and should monitor PDCCH. It is specified by the parameter drxOnDurationTimer, in milliseconds.

[0124] 2) DRX Opportunity: During the rest of the DRX cycle, the terminal will not monitor the PDCCH and will enter a sleep period. During this period, the terminal's transmitter / receiver is off, and the extent to which the terminal can save power depends on the length of this part of the time.

[0125] 3) inactivityTimer: If the PDCCH indicates a new transmission (DL or UL), the terminal will start or restart drxInactivityTimer in the first symbol after the PDCCH reception ends. When drxInactivityTimer expires, the terminal stops monitoring the PDCCH.

[0126] If new uplink or downlink data needs to be transmitted during On Duration, the terminal starts drx-InactivityTimer to indicate how long the terminal needs to continue listening to PDCCH.

[0127] The purpose of drx-InactivityTimer is to reduce data processing latency. However, if drx-InactivityTimer is set too long, the terminal will have to continue listening for downlink subframes even after the network has finished sending data, preventing it from entering sleep mode in time. To get the terminal into sleep mode as quickly as possible, when the network detects that there is no more uplink or downlink data to transmit, it can send a DRX Command MACCE to the terminal. Upon receiving this CE, the terminal will stop drx-OnDurationTimer and drx-InactivityTimer, and the terminal will enter sleep mode before drx-InactivityTimer expires, thus saving power.

[0128] A terminal in RRC connected state can determine whether the current system information has changed by decoding the paging message. Once the terminal detects that the system information has changed, it will re-interpret the system information. A terminal in RRC idle state can not only know whether the current system information has changed, but also know whether there is an incoming call. Once the terminal detects an incoming call, it will trigger a random access process.

[0129] In addition, regardless of whether it's in IDLE or connected mode, if the terminal capabilities support it, it can also determine whether to receive ETWS (Earthquake and Tsunami Warning System) and CMAS (Commercial Mobile Alert Service) information through paging messages. Paging messages typically carry terminal identifiers, such as S-TMSI and IMSI. S-TMSI stands for SAE-Temporary Mobile Subscriber Identity, and for security reasons, it's primarily used to identify terminals during paging. The maxPageRec value is fixed at 16, meaning one paging message can page a maximum of 16 terminals; this value needs to be considered when calculating paging capacity.

[0130] It should be noted that since paging messages are scrambled using P-RNTI, all terminals within the same cell can decode them. If different terminals find that the paging message contains system information changes or ETWS / CMAS message indications, they need to perform corresponding processing. In this case, the terminal does not need to compare its own S-TMSI or IMSI with the identifier in the paging message.

[0131] Paging supports DRX, which allows a terminal in RRC_IDLE state to "wake up" to receive Paging messages only during a predefined time period, while remaining in a "sleep" state at other times. This reduces power consumption and extends the terminal's battery life.

[0132] A terminal in RRC_IDLE state is in sleep mode for most of the DRX cycle, only waking up on the corresponding PO of the PF to listen for PDCCH scrambled using P-RNTI. If the terminal detects a PDCCH scrambled using P-RNTI on the PO, it reads each PagingRecord in the pagingRecordList, which contains the ue-Identity of the paged terminal. If the terminal finds that its terminal identifier matches a ue-Identity, it sends the ue-Identity and cn-Domain to the upper layer for further processing. If the UE does not find a ue-Identity that matches its UE identifier, the UE discards the received paging message and enters sleep mode.

[0133] (vi) Wake-up signal, abbreviated as WUS.

[0134] WUS (Wake-Up Signal) is a terminal power-saving technology proposed in 3GPP Rel-16. After a terminal supports WUS, the gNB can send WUS before or at the start of the DRX onduration. This WUS indicates whether the terminal needs to monitor PDCCH scheduling information in the relevant C-DRX, allowing the terminal to wake up as needed. The wake-up signal WUS is used during DRX onduration: when the terminal has no data to transmit, it is used by the gNB to notify the terminal (UE) not to wake up (No Wake Up). When the terminal has any data to transmit, the gNB will notify the terminal to wake up (Wave Up) so that the terminal can wake up and receive data within the onduration time. Because the monitoring time of the wake-up signal is shorter than the onduration, energy saving can be achieved. The base station sends the wake-up signal before the terminal enters the DRX cycle. If the terminal detects the wake-up signal, the terminal will be woken up and monitor the PDCCH channel; if the terminal does not detect the wake-up signal, the terminal can skip the entire DRX cycle and not monitor any PDCCH channel.

[0135] WUS is a new feature added in R16 and is not supported by R15 devices. Therefore, in the network, it is necessary to determine whether the current UE supports WUS based on the UE's capability information.

[0136] (vii) Low Power-Wake Up Signal (LP-WUS)

[0137] To achieve lower terminal power consumption, 3GPP has introduced an ultra-low power wake-up signal (LP-WUS) mechanism. For example... Figure 3 As shown, LP-WUS can receive data via LP WUR, which can be used to wake up the main communication module, etc. Figure 3 This is a schematic diagram of the structure of a terminal that can be applied to the embodiments of this application, such as... Figure 3 As shown, the terminal comprises two modules. The first module is the main receiver (MR), also known as the main communication module, used for transmitting and receiving mobile communication data. The second module is a low-power wake-up receiver (LP-WUR), also known as a low-power wake-up receiver module. The MR is used for normal data / service transmission reception, while the LP-WUR serves as a dedicated wake-up signal receiver to detect and process the LP-WUR. The low-power wake-up signal can be used to wake up the main receiver at the receiving end. Figure 3 As shown, when there is no ongoing data / service transmission on the MR, the terminal can turn off the MR or put it into sleep mode to significantly reduce the "standby" power consumption at the terminal, while simultaneously activating the LP-WUR to listen for wake-up signals. When downlink data arrives, the LP-WUR detects the LP-WUR sent by the transmitter, and if this LP-WUR contains information about the terminal, the LP-WUR triggers the MR to switch from the off state to the working state to receive and transmit data. The LP-WUR can be continuously or intermittently activated, and when activated, it can receive low-power wake-up signals.

[0138] This mechanism allows the main receiver on the terminal to be switched off when not in use, while a low-power secondary receiver performs real-time data monitoring. The main receiver is only woken up when data reception is needed. This technology can be used in small devices and wearable devices in IoT scenarios, as well as in other scenarios such as XR and smartphones.

[0139] (viii) LP-WUS monitoring occasions (MOs)

[0140] After entering LP-WUS listening mode, the terminal's primary receiver enters sleep mode, and the secondary receiver takes over signal listening. In RRC connected mode, the secondary receiver listens for LP-WUS signals during LP-WUS listening. When the base station needs to wake up the terminal, it sends an LP-WUS signal to the terminal, which is received by the secondary receiver. After receiving the LP-WUS signal, the secondary receiver wakes up the primary receiver based on the information carried in the LP-WUS signal, such as the UE ID or UE group ID. After receiving the LP-WUS signal, the terminal needs to receive the PDCCH after a minimum time gap, which is the time required for LP-WUS signal reception and processing, the primary receiver wake-up process, and time-frequency synchronization.

[0141] In RRC connected state, the terminal still needs to listen for any PO (Point of Purchase) within a cycle to detect system message changes or PWS (Personal Messages). This cycle is the modification period or default Paging Cycle. However, the PO location is not related to the timer location that DRX or LP-WUS might wake up the terminal. Therefore, the following problems may occur in LP-WUS scenarios:

[0142] like Figure 1 As shown in (a), the location of PO may be outside the timers that could wake up the terminal (including LP-WUS's own timer and the drx-onDuration timer), such as PO1 and PO3. For LR, after receiving LP-WUS, if LP-WUS indicates wake-up, the terminal's master receiver will wake up and start the OnDuration timer after the minimum time gap to enter the active period. Since PO1 is within the minimum time gap, the terminal will not be able to listen to PO1 because it is not awake. For PO3, since PO3's configuration is outside the terminal's active period, if the terminal stays awake to listen to PO3, it is not conducive to terminal energy saving. Even if the terminal can first enter a sleep state and then re-ramp-up to listen to PO3, if the configuration of PO3 is far from the timers that could wake up the terminal, and the terminal enters a sleep state first, then re-ramp-up to listen to PO3 will result in two power conversions, which is also not conducive to terminal energy saving. Figure 1 As shown in (b), if LP-WUS keeps indicating no wake-up, the terminal also needs to periodically and actively wake up the master receiver to listen to PO, and cannot truly enter sleep state.

[0143] Based on this, embodiments of this application provide a method for monitoring wake-up signals. In this method, a terminal determines a first time-frequency resource location (TFR) for receiving a first wake-up signal. This first TFR is located before a first Point of Purchase (PO) within a first monitoring period of the first terminal, and is spaced at least a first duration from the first PO. The first PO is located within the runtime of a first timer activated by the first wake-up signal. This ensures that the runtime of the first timer activated by the first wake-up signal covers at least one PO within each System Message Change / PWS monitoring period. Therefore, after being activated by the first wake-up signal, the first terminal can monitor the first PO within the runtime of the first timer without needing to be additionally activated to monitor other POs located outside the runtime of the first timer.

[0144] like Figure 5 As shown, Figure 5 The mobile communication system to which the method for listening to wake-up signals provided in this application embodiment applies includes a core network device 210, a radio access network device 220, a radio access network device 221, and at least one terminal (e.g., Figure 5 (Terminals 230 and 240 in the network). The terminals are connected to the wireless access network device 220 wirelessly, and the wireless access network device 220 is connected to the core network device 210 wirelessly or via wired connection.

[0145] The core network device 210 and the wireless access network device 220 / 221 can be independent physical devices, or the functions of the core network device and the logical functions of the wireless access network device can be integrated into the same physical device, or a single physical device can integrate some of the functions of the core network device and some of the functions of the wireless access network device. The terminal can be fixed in location or mobile. Figure 5 This is just an illustration; the communication system may also include other network devices, such as wireless repeaters and wireless backhaul devices. Figure 5 Not shown in the diagram. The embodiments of this application do not limit the number of core network devices, radio access network devices, and terminal devices included in the mobile communication system.

[0146] A wireless access network device is an access device that enables a terminal to access a mobile communication system wirelessly. Wireless access network devices can be base stations (NodeBs), evolved NodeBs (eNodeBs), base stations in 5G mobile communication systems, base stations in future mobile communication systems, or access nodes in WiFi systems, etc. The embodiments of this application do not limit the specific technologies or device forms used in the wireless access network devices.

[0147] As an example, the structure of the terminal in the embodiments of this application can be as follows: Figure 4 As shown.

[0148] A terminal can refer to user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user device. A terminal can also be a cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, vehicle-mounted device, handheld device, wearable device, computing device, portable device, or vehicle-mounted device, etc., as well as a smartphone, smart glasses, terminal equipment in a 5G network, or a terminal in a future evolved public land mobile network (PLMN), etc. This application embodiment does not limit this to any particular type.

[0149] Furthermore, terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water (such as ships); and they can be deployed in the air (e.g., on airplanes, balloons, and satellites). Specifically, these terminal devices can be mobile phones, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminals, augmented reality (AR) terminals, wireless terminals in industrial control, wireless terminals in self-driving vehicles, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, and wireless terminals in smart homes. Terminal devices can also be communication chips with communication modules, vehicles with communication capabilities, or in-vehicle equipment (such as in-vehicle communication devices and chips).

[0150] In this application embodiment, the network device can be an access network device (or access site) or a core network device. These will be described separately below.

[0151] In the first scenario, the network device can be an access network device (or access point).

[0152] When a network device is an access network device, it can also connect to core network (CN) devices. Access network devices refer to devices that provide network access functions, such as radio access networks (RAN), base stations, etc. Specifically, network devices may include base stations (BS) (such as RAN base stations), or base stations and radio resource management devices used to control base stations. These network devices may also include relay stations (relay equipment), access points, and base stations in future 5G networks, base stations in future PLMN networks, or NR base stations. Network devices can be wearable devices or vehicle-mounted devices. Network devices can also be communication chips with communication modules.

[0153] For example, network equipment includes, but is not limited to: next-generation base stations (g nodeB, gNB) in 5G, evolved node B (eNB) in long-term evolution (LTE) systems, radio network controllers (RNCs), radio controllers (Radio Controllers, RNCs) in cloud radio access networks (CRAN) systems, base station controllers (BSCs), home base stations (e.g., home evolved nodeB, or home node B, HNB), baseband units (BBUs), transmitting and receiving points (TRPs), transmitting points (TPs), mobile switching centers, base transceiver stations (BTSs) in global system for mobile communication (GSM) or code division multiple access (CDMA) networks, and also node base stations in wideband code division multiple access (WCDMA) networks. It can be a station (NB), an evolved NB (eNB or eNodeB) in LTE, a base station in a future 5G network, an access network in a future evolved PLMN network, or a wearable device or vehicle-mounted device.

[0154] In the second scenario, the network equipment can be core network equipment.

[0155] Core network equipment can be used to provide core network services to terminal devices accessing the network. Core network equipment can correspond to different devices in different systems. For example, in 3G, core network equipment can correspond to the Serving GPRS Support Node (SGSN) and / or the Gateway GPRS Support Node (GGSN) for General Packet Radio Service (GPRS). In 4G, core network equipment can correspond to the Mobility Management Entity (MME) and / or the Serving Gateway (S-GW). In 5G, core network equipment can correspond to the Access and Mobility Management Function (AMF), the Session Management Function (SMF), or the User Plane Function (UPF).

[0156] Taking 5G networks as an example Figure 5 The system architecture shown is explained as follows: Figure 5 As shown, access network equipment (also known as next-generation radio access networks (NG-RAN) nodes) can include gNBs and ng-eNBs. For example, a gNB could be... Figure 5 The wireless access network device 220 in the middle. For example, an ng-eNB can be... Figure 5 The wireless access network device 221 in the system. gNB and ng-eNB are connected via the Xn interface.

[0157] Access network equipment can connect to core network equipment via NG interfaces. For example, access network equipment can connect to AMF network elements via NG-C interfaces and to UPF network elements via NG-U interfaces. The NG-C interface can also be referred to as the control plane interface between NG-RAN and 5GC. The NG-U interface can also be referred to as the user plane interface between NG-RAN and 5GC.

[0158] Since future access networks can be implemented using a cloud radio access network (C-RAN) architecture, one possible approach is to divide the protocol stack architecture and functions of traditional base stations into two parts: a central unit (CU) and a distributed unit (DU). The actual deployment of CUs and DUs is quite flexible; for example, the CUs of multiple base stations can be integrated together to form a larger functional entity.

[0159] Wireless access network devices and terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of the wireless access network devices and terminal devices.

[0160] Communication between wireless access network devices and terminals, as well as between terminals, can be conducted using licensed spectrum, unlicensed spectrum, or a combination of both. Communication between wireless access network devices and terminal devices, as well as between terminal devices, can be conducted using spectrum below 6 GHz, spectrum above 6 GHz, or a combination of both. The embodiments of this application do not limit the spectrum resources used between wireless access network devices and terminals.

[0161] In this application embodiment, the specific structure of the execution entity of the method for listening to wake-up signals is not particularly limited, as long as it can communicate according to the method of listening to wake-up signals by running a program that records the code of the method of listening to wake-up signals according to this application embodiment. For example, the execution entity of the method for listening to wake-up signals provided in this application embodiment can be a functional module in the first terminal that can call and execute a program, or it can be a communication device applied in the first terminal, such as a chip, chip system, integrated circuit, etc. These chips, chip systems, and integrated circuits can be disposed inside the first terminal or can be independent of the first terminal, and this application embodiment does not impose any restrictions.

[0162] like Figure 6 As shown, Figure 6 This application provides a flowchart illustrating a method for monitoring wake-up signals, the method comprising:

[0163] Step 601: The first terminal determines the location of the first time-frequency resource where the first wake-up signal is located.

[0164] For example, the first time-frequency resource location is located before the first PO (Program Point) being monitored by the first terminal within the first monitoring period of the first terminal, and the first PO is located within the first runtime of the first terminal. There is at least a first runtime interval between the first time-frequency resource location and the first PO. The first runtime is the duration for which the first terminal monitors the Physical Downlink Control Channel (PDCCH).

[0165] For example, the first duration can also be called the minimum time gap. The length of the first duration can be a predefined value or a value configured by the network device based on the capabilities reported by the first terminal. The first duration includes the time required for the first terminal to receive and process the first wake-up signal, the wake-up process of the first terminal's main receiver, and time-frequency synchronization.

[0166] As an example, the first wake-up signal can be a wake-up signal received by the main receiver of the first terminal, i.e., WUS, or it can be a low-power wake-up signal received by the auxiliary receiver of the first terminal, such as LP-WUS.

[0167] For example, the first terminal can listen for the first paging message on the first PO to obtain the system message change indication and / or PWS notification indication (such as ETWS / CMAS notification) carried in the short message of the first paging message.

[0168] The first PO can be the first terminal's own PO (i.e., the PO determined by the first terminal using the first terminal's identifier), or it can be the PO corresponding to any of the multiple terminals, meaning the first terminal can also listen to the POs of other terminals.

[0169] In this embodiment, the time-frequency resource location where the first terminal listens for the wake-up signal can be referred to as the listening opportunity (MO). The first time-frequency resource location can also be referred to as the first MO. One or more MOs can be configured within a first listening cycle of the first terminal, and the first MO can be any one of the one or more MOs.

[0170] For example, the first listening period can be the modification period of the first terminal or the default paging period of the first terminal. The first terminal can listen for system message change indications on the first PO located within the first listening period. Alternatively, the first terminal can listen for ETWS / CMAS indications on the first PO within the first listening period. The first listening period can include one or more POs.

[0171] The first PO can be any PO within the first runtime period during the first listening period, or it can be the first PO within the first runtime period.

[0172] As an example, the first terminal can be a terminal in RRC connection state.

[0173] For example, the first listening cycle can be any one of one or more listening cycles of the first terminal.

[0174] Step 602: The network device sends a first wake-up signal at the first time-frequency resource location.

[0175] For example, suppose the network device decides to wake up the first terminal. The wake-up information carried in the first wake-up signal is used to instruct the first terminal to be woken up. For example, the wake-up information may carry the first terminal's identifier or the first terminal's group identifier. Thus, if the first terminal determines that the first wake-up signal includes its group identifier or its own identifier, it can confirm that it has been woken up. If the network device decides not to wake up the first terminal, the wake-up information carried in the first wake-up signal is used to instruct it not to be woken up. For example, if the first wake-up signal does not carry the first terminal's identifier or its group identifier, then the first terminal, upon receiving the first wake-up signal, can determine that the network device has instructed it not to be woken up.

[0176] It is understood that the process may further include, prior to step 602, the following: the network device determines the location of the first time-frequency resource. For example, the network device may determine the location of the first time-frequency resource for the first terminal. Alternatively, the first terminal may determine the location of the first time-frequency resource and then send it to the network device; this embodiment does not limit this. For example, the network device may be a wireless access network device.

[0177] Step 603: The first terminal listens for the first wake-up signal at the first time-frequency resource location.

[0178] For example, the first wake-up signal indicates whether to wake up the first terminal. Specifically, the first terminal can listen to and receive the first wake-up signal through a low-power receiver (i.e., a secondary receiver). When the first wake-up signal is heard, if the first wake-up signal indicates that the first terminal should be woken up, then the main receiver of the first terminal will wake up or the first terminal will determine to start the first timer during the DRX period to listen to the PDCCH during the first runtime of the first timer.

[0179] For example, such as Figure 7 As shown in (a) above, assuming the location of the first time-frequency resource is as follows: Figure 7 In (a) of the first terminal, if the network device sends a first wake-up signal to the first terminal on MO1 during the first runtime of the first terminal, the first wake-up signal instructs the main receiver of the first terminal to be woken up. After a minimum time interval, the main receiver of the first terminal is woken up. During the first runtime of the first terminal’s main receiver being woken up, if the network device sends a first paging message on PO1, the first terminal can listen to the first paging message sent by the network device on PO1.

[0180] In this embodiment, since the first time-frequency resource location receiving the first wake-up signal is located before the first PO within the first listening period of the first terminal, this ensures that when the first wake-up signal indicates that the first terminal is to be woken up, the first runtime of the first terminal after being woken up covers at least one PO (i.e., the first PO) within the first listening period. Thus, when the first terminal listens to the first wake-up signal at the first time-frequency resource location, if the first wake-up signal indicates that the first terminal is to be woken up, the first terminal can receive a paging message on the first PO within the first runtime after being woken up. For the first terminal, there is no need to wake up at other times to listen to a PO located outside the first runtime; the first terminal can enter a sleep state for a long time, or the first terminal can listen to the PO within the first runtime after being woken up by the first wake-up signal without needing to be woken up again, which is beneficial for terminal energy saving.

[0181] In this embodiment of the application, the first wake-up signal is used to instruct the main receiver of the first terminal to be woken up. In this case, the first runtime is the duration for which the main receiver of the first terminal is woken up. As for the runtime after the main receiver is woken up, it can be predefined by the protocol, and this embodiment of the application does not limit it.

[0182] In scenarios where the first wake-up signal instructs the first terminal's main receiver to be woken up, since the first terminal can receive LP-WUS at any time in the prior art, if LP-WUS instructs the first terminal's main receiver to be woken up, the location where the first terminal's main receiver is woken up is also random. Thus, the PO that the first terminal is listening to may be within or outside the wake-up time of the first terminal's main receiver. To avoid the first terminal waking up to listen to a PO where the main receiver is in a dormant state, in this embodiment, the first time-frequency position for receiving the first wake-up signal is specified to be before the first PO, and the first PO is within the first runtime of the main receiver (the first runtime can be referred to as the wake-up time of the first terminal's main receiver), and the first time-frequency position is at least separated from the first PO by a first time interval. This allows the first terminal's main receiver to listen to the first paging message sent by the network device on the first PO immediately after waking up, saving the first terminal's energy consumption. For example, in scenarios where the first wake-up signal instructs the first terminal's main receiver to be woken up, the first PO can be one of multiple POs of the first terminal; this embodiment does not limit this.

[0183] In this embodiment, the first terminal can employ a C-DRX mechanism. Assuming the first wake-up signal replaces the WUS, i.e., the first wake-up signal is used to indicate whether the first terminal's DRX-on Duration timer is enabled, then the first wake-up signal can appear once per DRX cycle. For example, the network device can send the first wake-up signal to the first terminal before the on Duration period within the DRX cycle. The first wake-up signal indicates whether to wake up the first terminal's first timer, and the first runtime is at least the runtime of the first timer. The first timer indicates the duration the first terminal listens to the Physical Downlink Control Channel (PDCCH) during its discontinuous reception working period in connected mode. In this scenario, the first time-frequency resource location is determined by the starting position of the first timer. For example, the first time-frequency resource location can be located before the starting position of the first timer, and the interval between the first time-frequency resource location and the starting position of the first timer is at least the first duration. The starting position of the first timer is close to the first PO within the first listening cycle. The first PO is the PO of any of the multiple terminals. The multiple terminals include the first terminal.

[0184] For example, the first timer can be a DRX timer, such as a drx-on Durationtimer. If the first wake-up signal indicates that the first timer should be started, the first terminal will start the drx-on Duration timer and enter the activation period. Suppose that when the first timer is started, the first terminal also decides to start the drx-InactivityTimer, then the first runtime is the sum of the runtime of the drx-InactivityTimer and the runtime of the drx-on Duration timer.

[0185] In one possible implementation of this application, the first wake-up signal indicates that the first timer of the first terminal is started. The method provided in the embodiments of this application further includes: the first terminal delays starting the first timer according to the first wake-up signal.

[0186] For example, considering the location of the first PO and the length of the first timer, the first terminal can delay the start of the first timer by a certain offset, provided the service allows it. Alternatively, the first terminal can predefine the conditions for delay based on the service PDB information carried in the first wake-up signal. Or, after receiving the first wake-up signal, the first terminal first wakes up the main receiver. After the main receiver is awakened, the first terminal receives a non-scheduled DCI indication indicating whether a delay is allowed. If the DCI indication allows a delay, the first terminal then re-enters sleep mode and then starts the first timer.

[0187] In one possible embodiment of this application, the method provided in this application embodiment may further include: a network device sending a first paging message to a first terminal on a first PO, and correspondingly, the first terminal may receive the first paging message on the first PO.

[0188] The first paging message carries a system message change notification and / or an ETWS / CMAS indication.

[0189] In this scheme, network devices can send system message change notifications and / or ETWS / CMAS indications only within a designated first PO, reducing the number of transmissions. For the first terminal, it can also obtain system message change notifications and / or ETWS / CMAS indications from the first PO without needing to listen to other POs.

[0190] In one possible embodiment of this application, the method provided in this application embodiment may further include: before the network device sends a first paging message to the first terminal on the first PO, the method provided in this application embodiment may further include: the network device sending a first wake-up signal at the first time-frequency resource location, so that the first terminal can listen to the first wake-up signal at the first time-frequency resource location. If the wake-up information carried by the first wake-up signal indicates that the first terminal should be woken up, then the first terminal is woken up and listens to the PDCCH for a first runtime. In this way, the network device can send the first paging message to the first terminal on the first PO.

[0191] Since the wake-up signal sent by the network device at the first time-frequency resource location can carry wake-up information that can instruct the first terminal to be woken up or not to be woken up, if the wake-up information carried by the first wake-up signal instructs the first terminal's main receiver to be woken up, the first terminal's main receiver will wake up and listen to the PDCCH for the first runtime. If the first wake-up signal instructs the first terminal to activate its drx-on Duration timer, the first terminal will activate the drx-on Duration timer and enter the active period to listen to the PDCCH. If the wake-up information carried by the first wake-up signal instructs the first terminal's main receiver not to be woken up or the drx-on Duration timer not to be activated, the first terminal's LR will not wake up the first terminal's main receiver or the first terminal will not activate the drx-on Duration timer, thus the first terminal will remain in a sleep state.

[0192] To avoid situations where the first terminal misses the first wake-up signal (i.e., the network device sends the first wake-up signal but the first terminal does not listen to the first wake-up signal at the first time-frequency resource location, or the network device does not send the first wake-up signal at the first time-frequency resource location, resulting in the first terminal not listening to the first wake-up signal at the first time-frequency resource location, or the wake-up information carried in the first wake-up signal indicates that the first terminal should not wake up), and to prevent the first terminal from missing receiving the paging message within the first listening period, in one possible embodiment of this application, the method provided in this application embodiment may further include:

[0193] The network device sends a second paging message on the second PO within the first listening period of the first terminal, and correspondingly, the first terminal receives the second paging message on the second PO within the first listening period.

[0194] For example, the second paging message may include a monitoring system message change indication and / or a public early warning system (PWS) notification indication. The second PO is one of the multiple POs of the first terminal within the first monitoring period, and the second PO is located after the first PO, while the first PO belongs to the multiple POs.

[0195] For example, the second PO can be the last PO among multiple POs. The second PO can be the last PO within the first listening cycle, and this second PO can be within the runtime of the first timer or outside the runtime of the first timer.

[0196] It is understood that the second PO can be a PO negotiated and determined by the network device and the first terminal. The second PO can be one of multiple POs calculated by the first terminal using the first terminal's identifier, or the second PO can be a PO designated by the network device for the first terminal from its own POs for receiving the second paging message, or the second PO can be a PO reassigned by the network device for the first terminal for receiving the second paging message. This application embodiment does not limit this.

[0197] As an example, the method provided in this application embodiment may further include: a first terminal receiving configuration information from a network device, the configuration information being used to indicate information of a second PO.

[0198] This scheme enables the first terminal to receive the second paging message by listening to the second PO within the first listening period, even if the first terminal does not detect the first wake-up signal at the first time-frequency resource location, or if the wake-up information carried in the first wake-up signal indicates that the drx-on Duration timer is not enabled or the main receiver of the first terminal is not woken up.

[0199] For example, such as Figure 7As shown in (b), assuming the first terminal adopts the C-DRX mechanism, the first time-frequency resource location is... Figure 7 In (b) above, MO1 is located before the activation period of the first terminal. The network device can send a first wake-up signal to the first terminal via MO1. This first wake-up signal indicates that the drx-on Durationtimer should not be woken up. After receiving the first wake-up signal, the LR of the first terminal will not wake up the MR of the first terminal. Thus, the first terminal will not activate the drx-on Durationtimer, and the first terminal will not be able to listen to the first PO (…). Figure 7 As shown in (b) of the diagram, in order to ensure that the first terminal can listen to the system message change indication or PWS notification indication within the first listening period, the network device can send a second paging message on PO2 so that the first terminal can listen to the second paging message on PO2.

[0200] In one possible embodiment of this application, the method provided in this application embodiment may further include: a first terminal determining, according to the format of a first wake-up signal, to listen to a PDCCH or a PDCCH scrambled with a Paging Radio Network Temporary Identifier (P-RNTI) during a first runtime.

[0201] Specifically, the first wake-up signal in the first format is used to indicate that the PDCCH is being listened to during the first runtime. The first wake-up signal in the second format is used to indicate that the first terminal is listening to the P-RNTI scrambled PDCCH during the first runtime.

[0202] Specifically, if the format of the first wake-up signal is a first format and the wake-up information carried by the first wake-up signal indicates wake-up, then the first terminal can determine that it is listening to the PDCCH within the runtime of the first timer. If the format of the first wake-up signal is a second format and the wake-up information carried by the first wake-up signal indicates wake-up, then the first terminal can determine that it is listening to the P-RNTI scrambled PDCCH within the runtime of the first timer.

[0203] The following describes how the first terminal determines the format of the first wake-up signal.

[0204] Method 1: The format of the first wake-up signal is determined by the length of the first wake-up signal.

[0205] For example, different lengths of the first wake-up signal indicate different formats. A first length indicates a first format, while a second length indicates a second format.

[0206] The first length and the second length are N1 and N2, respectively. The different lengths of the first wake-up signal received by the first terminal implicitly indicate two formats.

[0207] For example, the format of the first wake-up signal can be the number of bits occupied by the first wake-up signal. The first terminal can agree with the network device on the length of the first wake-up signal in the first format and the length of the first wake-up signal in the second format, or the network device can indicate the length of the first wake-up signal in the first format and the length of the first wake-up signal in the second format to the first terminal, or the length of the first wake-up signal in the first format and the length of the first wake-up signal in the second format can be predefined by the protocol, and this application embodiment does not limit this.

[0208] Method 2: The format of the first wake-up signal is indicated by the first indication information carried by the first wake-up signal.

[0209] For example, the first indication information can be a first indicator, indicating that the format of the first wake-up signal is a first format. Alternatively, the first indication information can be a second indicator, indicating that the format of the first wake-up signal is a second format. The size of the first indication information can be N bits. N is greater than or equal to 1.

[0210] Method 3: The format of the first wake-up signal is determined by grouping the waveform sequence during the modulation of the first wake-up signal.

[0211] For example, by using LP-WUS modulation, the different sequence groupings of the overlaid portion of the OOK waveform ON can distinguish between two formats. For instance, sequence 1 / 2 / 3 represents format 1, and sequence 4 / 5 / 6 represents format 2.

[0212] It is understandable that the above three schemes for indicating the format of the first wake-up signal can be used in combination without contradiction. For example, the length of the first wake-up signal is a first length, and the first wake-up signal can also carry first indication information indicating that the first wake-up signal is a first format.

[0213] The following describes how the first terminal determines the location of the first time-frequency resource.

[0214] In one example, the first terminal may receive a first configuration message from a network device, the first configuration message including information for indicating the location of a first time-frequency resource.

[0215] For example, a network device sends a first configuration message to a first terminal. For instance, assuming the protocol specifies a formula for calculating the MO (Mean Origin), the network device can determine the first time-frequency resource location (PO) according to the agreed-upon MO calculation method. Alternatively, the network device can first calculate one or more POs of the first terminal, and then determine at least one PO within a first runtime of the first terminal. Then, the network device determines the first PO from among the at least one PO. Finally, the network device can determine the time-frequency resource location located before the first PO and outside the first runtime as the first time-frequency resource location. Alternatively, the network device can first determine the first time-frequency resource location, and then, based on the first time-frequency resource location, determine the PO corresponding to the time-frequency resource location located after the first time-frequency resource location, within the first runtime, and at least a first runtime interval from the first time-frequency resource location as the first PO.

[0216] In another example, the first terminal determines the location of the first time-frequency resource according to the MO calculation method agreed upon in the protocol.

[0217] In one possible embodiment of this application, the first time-frequency resource location is determined by the location of a PO among a plurality of POs of the first terminal within a first listening period that is located within a first runtime. For example, the first terminal / network device may first determine one or more POs of the first terminal within the first listening period. The first terminal / network device determines the first PO among the one or more POs that is located within the first runtime, and then the first terminal / network device may determine the time-frequency resource location preceding the first PO and spaced at least a first duration from the first PO as the first time-frequency resource location for receiving the first wake-up signal.

[0218] In this scheme, the first location (PO) is determined first, and then the location of the first time-frequency resource (TFR) is determined based on the location of the first PO. This ensures that the first timer, which is woken up by the first wake-up signal during the first listening cycle, covers at least one PO during each system message change / PWS listening cycle.

[0219] In one possible embodiment of this application, the method provided by the embodiments of this application may further include: the position of the first PO within a first runtime is determined by the first time-frequency resource position.

[0220] For example, the first terminal can determine the first time-frequency resource location (PO) based on the first configuration information issued by the network device or the MO calculation method agreed upon in the protocol. After the first terminal or network device determines the first time-frequency resource location, the first terminal or network device can use a PO located after the first time-frequency resource location and at least a first time interval from the first time-frequency resource location as the first PO. Alternatively, the network device can first determine the first time-frequency resource location that receives the first wake-up signal within the first listening period of the first terminal, then determine the first time-frequency resource location, and then determine the first PO for the first terminal, and send the information of the first time-frequency resource location and the first PO to the first terminal.

[0221] Optionally, if the location of the first PO is determined by the first terminal, the method provided in this application embodiment may further include: the first terminal sending information indicating the first PO to the network device, so that the network device can determine that a first paging message can be sent to the first terminal on the first PO.

[0222] In one possible embodiment of this application, the method provided in this application embodiment may further include: the first wake-up signal carrying a system message change indication and / or a public warning system (PWS) notification indication.

[0223] When the first wake-up signal carries a system message change indication and / or a public warning system (PWS) notification indication, the first terminal can receive the system message change indication and / or PWS notification indication in the first wake-up signal. Even if the first wake-up signal does not wake up the first terminal, the first terminal does not need to wake up the listening PO. The network device can send the system message change indication and / or PWS notification indication in the first wake-up signal, reducing the number of times it is sent in the PO and reducing network overhead.

[0224] It is understandable that if the first wake-up signal carries a system message change indication and / or a public warning system (PWS) notification indication, the first terminal can obtain the updated system message and / or ETWS / CMAS in the next listening cycle of the first listening cycle.

[0225] In one possible embodiment of this application, the format of the first wake-up signal carrying a system message change indication and / or a public warning system (PWS) notification indication is a second format.

[0226] In one possible embodiment of this application, the first wake-up signal may carry wake-up information in addition to carrying system message change indication and / or public warning system (PWS) notification indication, to indicate whether to wake up.

[0227] In one possible embodiment of this application, the method provided in this application may further include: a first terminal determining a second time-frequency resource location; the first terminal listening for a second wake-up signal at the second time-frequency resource location; the second wake-up signal carrying public information or wake-up information.

[0228] It is understandable that the second time-frequency resource location is a common time-frequency resource location. Other terminals besides the first terminal can also listen for the second wake-up signal at the second time-frequency resource location.

[0229] The second wake-up signal is in the second format and is used to instruct the first terminal to listen to the P-RNTI scrambled PDCCH.

[0230] The second time-frequency resource location is situated before the third PO within the second monitoring period of the first terminal, and is at least two time intervals from the third PO. The third PO can be the PO of any of the multiple terminals. The second time interval may be equal to or unequal to the first time interval, and the method for determining the second time interval can refer to the method for determining the first time interval; this embodiment does not limit this. The second time interval may be a predefined time period or a time period negotiated and determined by the network device and the first terminal; this embodiment does not limit this.

[0231] In one possible implementation of this application, the method provided in this embodiment may further include: a network device sending a second wake-up signal at a second time-frequency resource location. This allows multiple terminals to detect the second wake-up signal at the second time-frequency resource location.

[0232] As an example, the method by which the first terminal determines the location of the second time-frequency resource may include the following process:

[0233] The first terminal receives second configuration information from the network device, the second configuration information including information indicating the location of the second time-frequency resource. Alternatively, the first terminal can determine the location of the second time-frequency resource according to the method for calculating the common MO agreed upon in the protocol.

[0234] It is understandable that the second wake-up signal is in the second format, meaning that the network device can send the second wake-up signal at the second time-frequency resource location.

[0235] The second time-frequency resource location and the first time-frequency resource location have different period / time-frequency locations, such as Figure 8 As shown, the network device can send a second wake-up signal to the first terminal on the common MO.

[0236] For example, the period of the second time-frequency resource is T1, and the period of the first time-frequency resource is T2. Network devices can explicitly configure different offsets, or calculate them according to different formulas.

[0237] For example, the second time-frequency resource location can be called a common MO. This common MO can be used to receive a second wake-up signal, which includes common information. For instance, a network device can send an LP-WUS carrying system information modification (systemInfoModification) and / or etwsAndCmasIndication on the common MO. Thus, multiple terminals can receive the LP-WUS with systemInfoModification and / or etwsAndCmasIndication on the common MO. The first time-frequency resource location can be called a terminal's dedicated MO. The terminal's dedicated MO can carry wake-up information. The common MO can carry common information that the network device needs to send, such as system message modification indication or etwsAndCmasIndication.

[0238] In one possible implementation of this application, for a first terminal listening to LP-WUS, if the first wake-up signal or the second wake-up signal carries a system message change and / or ETWS / CMAS indication, then the network device may omit sending the system message change indication and / or ETWS / CMAS indication on the first PO or the third PO.

[0239] In one possible implementation of this application, for the first terminal that exits LP-WUS monitoring, the method provided in this application embodiment may further include: the network device sending a system message change indication and / or ETWS / CMAS indication at the fourth PO corresponding to the first terminal.

[0240] As an example, the fourth PO can be any of the POs of the first terminal itself, or the fourth PO can be a time-frequency location newly defined by the network device for the first terminal to receive system message change indications and / or ETWS / CMAS indications, or the fourth PO can be a PO specifically designated by the network device for the first terminal from the first terminal's own POs for receiving system message change indications and / or ETWS / CMAS indications, at which the network device sends system message change indications and / or ETWS / CMAS indications.

[0241] The above mainly describes the solutions of the embodiments of this application from the perspective of interaction between various network elements. It is understood that each network element, such as the first terminal and network devices, includes corresponding structures and / or software modules to perform the above functions in order to achieve them. Those skilled in the art should readily recognize that, based on the units and 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.

[0242] This application embodiment can divide functional units according to the first terminal and network device in the above method example. For example, each function can be divided into different functional units, or two or more functions can be integrated into one processing unit. The integrated unit can be implemented in hardware or as a software functional unit. It should be noted that the unit division in this application embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods.

[0243] The above combination Figures 6 to 8 The methods described in the embodiments of this application have been explained. The communication apparatus provided in the embodiments of this application for executing the above methods is described below. Those skilled in the art will understand that the methods and apparatus can be combined with and referenced in each other, and the communication apparatus provided in the embodiments of this application can execute the steps performed by the first terminal and the network device in the above analysis method.

[0244] When using integrated units Figure 9 The communication device described in the above embodiments is illustrated. The communication device may include a communication module 913 and a processing module 912. In an optional implementation, the communication device may further include a storage module 911 for storing the program code and data of the communication device.

[0245] In one example, the communication device is a first terminal, or a chip applied in the first terminal. In this case, the communication module 913 is used to support communication between the communication device and external network elements (e.g., network devices). For example, the communication module 913 is used to perform signal transmission and reception operations of the first terminal in the above method embodiments. The processing module 912 is used to perform signal processing operations of the first terminal in the above method embodiments.

[0246] In one embodiment of this application, the communication module 913 is used to perform the above embodiments. Figure 6The receiving action performed by the first terminal in step 601. Processing module 912 is used to support the communication device in performing this action. Figure 6 Step 601 of the steps.

[0247] In another example, the communication device is a network device, or a chip applied in a network device. In this case, the communication module 913 is used to support communication between the communication device and an external network element (e.g., a first terminal). For example, the communication module 913 is used to perform the signal transmission and reception operations of the network device in the above method embodiments. The processing module 912 is used to perform the signal processing operations of the network device in the above method embodiments. For example, in one embodiment of this application, the communication module 913 is used to perform the above embodiments. Figure 6 The sending action performed by the network device in step 601. Processing module 912 is used to support the communication device in performing the aforementioned processing action performed by the network device.

[0248] The processing module 912 can be a processor or controller, such as a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the 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 computational functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, etc. The communication module can be a transceiver, transceiver circuitry, or communication interface, etc. The storage module can be a memory.

[0249] When the processing module 912 is a processor 1001 or a processor 1005, the communication module 913 is a communication interface 1003, and the storage module 911 is a memory 1002, the communication device involved in this application can be... Figure 10 The communication device shown.

[0250] Figure 10 The diagram shown is a hardware structure diagram of the communication device provided in an embodiment of this application. The structures of the first terminal and network device in this embodiment can be referred to as follows. Figure 10 The diagram shows the structure of a communication device. The communication device includes a processor 1001, a communication line 1004, and at least one communication interface. Figure 10 (The example described uses communication interface 1003 as an example).

[0251] The processor 1001 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits used to control the execution of the program of the present application.

[0252] The communication line 1004 may include a path for transmitting information between the aforementioned components.

[0253] The communication interface 1003 is used to exchange information with other devices, such as any transceiver, for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area network (WLAN), etc.

[0254] Optionally, the communication device may also include a memory 1002.

[0255] The memory 1002 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited to these. The memory may exist independently and be connected to the processor via communication line 1004. The memory may also be integrated with the processor.

[0256] The memory 1002 stores computer execution instructions for implementing the scheme of this application, and the processor 1001 controls the execution. The processor 1001 executes the computer execution instructions stored in the memory 1002, thereby implementing a method for listening to a wake-up signal provided in the following embodiments of this application.

[0257] Optionally, the computer execution instructions in the embodiments of this application may also be referred to as application code, and the embodiments of this application do not specifically limit this.

[0258] In a specific implementation, as one example, the processor 1001 may include one or more CPUs, for example... Figure 10 CPU0 and CPU1 in the CPU.

[0259] In a specific implementation, as one example, the communication device may include multiple processors, for example... Figure 10 Processors 1001 and 1005 are mentioned. Each of these processors can be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor here can refer to one or more devices, circuits, and / or processing cores used to process data (e.g., computer program instructions).

[0260] The steps performed by processors 1001 and 1005 can refer to the steps performed by processing module 912 described above. The steps performed by communication interface 1003 can refer to the steps performed by communication module 913 described above.

[0261] It is worth noting that, when... Figure 10 When the communication device shown is a first terminal or network device, the communication interface 1003 can be replaced with a transceiver.

[0262] Figure 11 This is a schematic diagram of the structure of chip 110 provided in an embodiment of this application. Chip 110 includes one or more (including two) processors 1110 and communication interfaces 1130.

[0263] Optionally, the chip 110 also includes a memory 1140, which may include read-only memory and random access memory, and provides operation instructions and data to the processor 1110. A portion of the memory 1140 may also include non-volatile random access memory (NVRAM).

[0264] In some implementations, memory 1140 stores elements such as execution modules or data structures, or subsets thereof, or extended sets thereof.

[0265] In this embodiment of the application, the corresponding operation is executed by calling the operation instructions stored in the memory 1140 (the operation instructions can be stored in the operating system).

[0266] One possible implementation is that the first terminal and network devices have similar structures, and different devices can use different chips to achieve their respective functions.

[0267] The processor 1110 controls the processing operations of any one of the first terminal or network devices. The processor 1110 can also be called a central processing unit (CPU).

[0268] Memory 1140 may include read-only memory and random access memory, and provides instructions and data to processor 1110. A portion of memory 1140 may also include NVRAM. For example, in an application, memory 1140, communication interface 1130, and memory 1140 are coupled together via bus system 1120, which may include, in addition to data bus, power bus, control bus, and status signal bus, etc. However, for clarity, in Figure 11 The general labeled all buses as Bus System 1120.

[0269] The methods disclosed in the embodiments of this application can be applied to or implemented by the processor 1110. The processor 1110 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in the processor 1110 or by instructions in the form of software. The processor 1110 may be a general-purpose processor, a digital signal processor (DSP), an ASIC, a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 1140. Processor 1110 reads the information in memory 1140 and, in conjunction with its hardware, completes the steps of the above method.

[0270] In one possible implementation, the communication interface 1130 is used to execute Figures 6-8 The illustrated embodiment shows the receiving and transmitting steps of the first terminal. Processor 1110 is used to execute... Figures 6-8 The processing steps of the first terminal in the illustrated embodiment.

[0271] In one possible implementation, the communication interface 1130 is used to execute Figures 6-8 The illustrated embodiment describes the receiving and transmitting steps of the network device. Processor 1110 is used to execute... Figures 6-8 The steps of network device processing in the illustrated embodiment.

[0272] On the one hand, a computer-readable storage medium is provided, in which instructions are stored, which, when executed, implement as follows: Figures 6-8 The function executed by the first terminal.

[0273] On the one hand, a computer program product including instructions is provided, wherein the computer program product includes instructions that, when executed, implement such... Figures 6-8 Functions performed by network devices.

[0274] On one hand, a chip is provided for use in a first terminal. The chip includes at least one processor and a communication interface, the communication interface and the at least one processor being coupled together. The processor is used to execute instructions to achieve, for example... Figures 6-8 The function executed by the first terminal.

[0275] On one hand, a chip is provided for use in a first terminal. The chip includes at least one processor and a communication interface, the communication interface and the at least one processor being coupled together. The processor is used to execute instructions to achieve, for example... Figures 6-8 Functions performed by network devices.

[0276] This application provides a communication system, which includes a first terminal and a network device. The first terminal is used to perform actions such as... Figures 6-8 The functions performed by the first terminal are executed by the network device. Figures 6-8 Functions performed by network devices.

[0277] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of this application are performed entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or other programmable device. The computer program or instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; it can also be an optical medium, such as a digital video disc (DVD); or it can be a semiconductor medium, such as a solid-state drive (SSD).

[0278] Although this application has been described herein in conjunction with various embodiments, those skilled in the art, by reviewing the accompanying drawings, the disclosure, and the appended claims, will understand and implement other variations of the disclosed embodiments in carrying out the claimed application. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple instances. A single processor or other unit can implement several functions listed in the claims. While different dependent claims may recite certain measures, this does not mean that these measures cannot be combined to produce good results.

[0279] Although this application has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made thereto without departing from the spirit and scope of this application. Accordingly, this specification and drawings are merely exemplary illustrations of this application as defined by the appended claims, and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from the spirit and scope of this application. Thus, if such modifications and modifications of this application fall within the scope of the claims of this application and their equivalents, this application is also intended to include such modifications and modifications.

Claims

1. A method for listening to wake-up signals, characterized in that, The method includes: The first time-frequency resource location of the first wake-up signal is determined. The first time-frequency resource location is located before the first paging opportunity (PO) within the first listening period of the first terminal, and the first PO is located within the first running duration of the first terminal. The first time-frequency resource location and the first PO are at least separated by a first time duration. The first running duration is the duration for which the first terminal listens to the physical downlink control channel (PDCCH). Listen for the first wake-up signal at the first time-frequency resource location. The first wake-up signal indicates whether the first terminal is woken up.

2. The method according to claim 1, characterized in that, The first terminal includes a main receiver and a secondary receiver. The secondary receiver is used to receive the first wake-up signal, which indicates whether to wake up the main receiver. The first runtime is the wake-up duration of the main receiver.

3. The method according to claim 1, characterized in that, The first wake-up signal indicates whether the first terminal starts the first timer, the first runtime is the runtime of the first timer, and the first timer indicates the duration during which the first terminal listens to the physical downlink control channel (PDCCH) during the discontinuous reception working period in the connected state. The first time-frequency resource location is located before the start position of the first timer, and the start position of the first timer is close to the first PO within the first listening period. The first PO is the PO of any one of the multiple terminals, including the first terminal.

4. The method according to claim 3, characterized in that, The first wake-up signal indicates that the first timer is started, and the method further includes: Based on the first wake-up signal, the first timer is started after a first delay.

5. The method according to any one of claims 1 to 4, characterized in that, The first wake-up signal instructs the first terminal to wake up, and the method further includes: According to the first wake-up signal, wake up the main receiver of the first terminal or the first timer of the first terminal; A first paging message is received on the first PO, the first paging message carrying a system message change notification and / or a public warning system (PWS) notification indication.

6. The method according to any one of claims 1 to 5, characterized in that, The method further includes: A second paging message is received on the second PO within the first monitoring period. The second paging message includes a monitoring system message change indication and / or a public early warning system (PWS) notification indication. The second PO is the last PO among the multiple POs of the first terminal within the first monitoring period, and the first PO belongs to the multiple POs.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: Based on the format of the first wake-up signal, it is determined that the PDCCH being listened to on the first PO during the first runtime period or the PDCCH being listened to on the first PO is a PDCCH scrambled with the Paging Radio Network Temporary Identifier (P-RNTI). The first wake-up signal in a first format is used to indicate that the PDCCH is being listened to during the first runtime. The first wake-up signal in the second format is used to indicate listening to the PDCCH scrambled with the P-RNTI temporary identifier of the paging wireless network during the first runtime.

8. The method according to any one of claims 1 to 7, characterized in that, The location of the first time-frequency resource is determined by the location of the PO among the multiple POs of the first terminal within the first listening period, which is located within the first runtime; or, The position of the first PO within the first runtime is determined by the position of the first time-frequency resource.

9. The method according to any one of claims 1 to 8, characterized in that, The first wake-up signal carries a system message change indication and / or a public warning system (PWS) notification indication.

10. The method according to claim 9, characterized in that, The first wake-up signal also carries wake-up information, which indicates whether to wake up the first terminal.

11. The method according to any one of claims 1 to 10, characterized in that, The method further includes: Determine the second time-frequency resource location for receiving the second wake-up signal. The second time-frequency resource location is located before the third PO within the second listening period of the first terminal, and is at least a second time interval from the third PO. The third PO is the PO of any one of a plurality of terminals, including the first terminal. The second wake-up signal is listened to at the second time-frequency resource location. The second wake-up signal is in the second format and carries common information. The second wake-up signal is used to instruct the first terminal to listen to the P-RNTI scrambled PDCCH on the third PO.

12. The method according to any one of claims 1 to 11, characterized in that, The method further includes: When the first terminal exits the listening wake-up signal mechanism, a fourth paging message is received on the fourth PO. The fourth paging message carries a system message change indication and / or a public early warning system (PWS) notification indication.

13. A method for monitoring wake-up signals, characterized in that, The method includes: A first wake-up signal is sent at a first time-frequency resource location, wherein the first time-frequency resource location is located before the first paging opportunity (PO) within the first listening period of the first terminal, and the first PO is located within the first running duration of the first terminal, and the first time-frequency resource location and the first PO are at least separated by a first duration; the first running duration is the duration for which the first terminal listens to the physical downlink control channel (PDCCH); the first wake-up signal indicates whether to wake up the first terminal.

14. The method according to claim 13, characterized in that, The method further includes: Send first configuration information and / or second configuration information to the first terminal, wherein the first configuration information includes: information for indicating the location of the first time-frequency resource. The second configuration information includes: information for indicating a second time-frequency resource location, wherein the second time-frequency resource location is located before the third PO within the second listening period of the first terminal, and is at least a second duration apart from the third PO, wherein the third PO is the PO of any of the plurality of terminals, the second time-frequency resource location is used to send a second wake-up signal, the second wake-up signal is in a second format, the second wake-up signal carries common information, and the second wake-up signal is used to instruct the first terminal to listen to the P-RNTI scrambled PDCCH on the third PO.

15. The method according to claim 13 or 14, characterized in that, The method further includes: A paging message is sent on the first PO or the second PO, the paging message carrying a system message change notification and / or a public warning system (PWS) notification indication, wherein the second PO is the last PO among the multiple POs of the first terminal within the first monitoring period.

16. The method according to any one of claims 13 to 15, characterized in that, The method further includes: If the first terminal exits the listening wake-up signal mechanism, a system message change instruction and / or a public early warning system (PWS) notification instruction are sent on the fourth PO of the first terminal.

17. A communication device, characterized in that, The device includes: a communication module and a processing module. Wherein, the processing module is used to execute the processing action performed by the first terminal in the method according to any one of claims 1 to 12, and the communication module is used to execute the receiving or sending action performed by the first terminal in the method according to any one of claims 1 to 12; or, The processing module is used to perform the processing actions performed by the network device in the method according to any one of claims 13 to 16, and the communication module is used to perform the receiving or sending actions performed by the network device in the method according to any one of claims 13 to 16.

18. A communication system, characterized in that, include: A first terminal and a network device, wherein the first terminal is configured to perform the method according to any one of claims 1 to 12, and the network device is configured to send a first wake-up signal to the first terminal at a first time-frequency resource location.

19. A communication device, characterized in that, The communication device includes a memory and a processor. The memory is used to store instructions, and the processor is used to execute the instructions stored in the memory. Execution of the instructions stored in the memory causes the processor to perform the method of any one of claims 1 to 12, or the method of any one of claims 13 to 16.

20. A chip, characterized in that, The chip includes at least one processor and a communication interface, the communication interface being coupled to the at least one processor, the at least one processor being configured to run computer programs or instructions to implement the method as described in any one of claims 1 to 12, or the method as described in any one of claims 13 to 16, and the communication interface being configured to communicate with other modules outside the chip.

21. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that, when executed, implement the method of any one of claims 1 to 12, or the method of any one of claims 13 to 16.

22. A computer program product, characterized in that, The computer program product stores instructions that, when executed on a computer, cause the computer to perform the method described in any one of claims 1 to 12, or the method described in any one of claims 13 to 16.

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