Methods and apparatuses for wireless communication

Abstract

Provided in the present application are methods and apparatuses for wireless communication, which methods and apparatuses facilitate an improvement to the reachability of communication devices. A method for wireless communication comprises: a first communication device receiving a first notification sent by a second communication device; and the first communication device giving an alarm prompt on the basis of the first notification, wherein the first notification is used for indicating one or more pagings within a first time period, and the one or more pagings comprise a paging that is not successfully received by the first communication device and / or a paging that cannot be successfully received by the first communication device in the current state.

Description

Method and apparatus for wireless communication Technical Field

[0001] The present application relates to the field of communication technology, and more particularly, to a method and apparatus for wireless communication. Background Art

[0002] In certain scenarios (e.g., discontinuous coverage of non-terrestrial networks (NTNs)), terminal devices may not receive paging from the network and may not be aware of the missed paging, potentially missing out on important information. Therefore, improving the reachability of terminal devices or making them aware of missed paging is a pressing technical issue.

[0003] Summary of the Invention

[0004] The present application provides a method and apparatus for wireless communication. The following describes various aspects of the embodiments of the present application.

[0005] In a first aspect, a method for wireless communication is provided, comprising: a first communication device receives a first notification sent by a second communication device; the first communication device issues an alarm prompt based on the first notification; wherein the first notification is used to indicate one or more pagings within a first time period, the one or more pagings including pagings that the first communication device has not successfully received and / or pagings that the first communication device cannot successfully receive in a current state.

[0006] According to a second aspect, a method for wireless communication is provided, comprising: a second communication device sends a first notification to a first communication device; wherein the first notification is used to provide an alarm prompt to the first communication device, and the first notification is also used to indicate one or more pagings within a first time period, the one or more pagings including pagings that the first communication device has not successfully received and / or pagings that the first communication device cannot successfully receive in the current state.

[0007] According to a third aspect, a device for wireless communication is provided, which is a first communication device, and includes: a receiving unit for receiving a first notification sent by a second communication device; an execution unit for issuing an alarm prompt based on the first notification; wherein the first notification is used to indicate one or more pagings within a first time period, and the one or more pagings include pagings that the first communication device has not successfully received and / or pagings that the first communication device cannot successfully receive in the current state.

[0008] In a fourth aspect, a device for wireless communication is provided, which is a second communication device, and the device includes: a sending unit, used to send a first notification to a first communication device; wherein the first notification is used to provide an alarm prompt to the first communication device, and the first notification is also used to indicate one or more pagings within a first time period, and the one or more pagings include pagings that the first communication device has not successfully received and / or pagings that the first communication device cannot successfully receive in the current state.

[0009] In a fifth aspect, a communication device is provided, comprising a memory and a processor, wherein the memory is used to store a program, and the processor is used to call the program in the memory to execute the method described in the first aspect or the second aspect.

[0010] In a sixth aspect, a device is provided, comprising a processor for calling a program from a memory to execute the method as described in the first aspect or the second aspect.

[0011] In a seventh aspect, a chip is provided, comprising a processor for calling a program from a memory so that a device equipped with the chip executes the method described in the first aspect or the second aspect.

[0012] In an eighth aspect, a computer-readable storage medium is provided, on which a program is stored, wherein the program enables a computer to execute the method as described in the first aspect or the second aspect.

[0013] In a ninth aspect, a computer program product is provided, comprising a program, wherein the program enables a computer to execute the method as described in the first aspect or the second aspect.

[0014] In a tenth aspect, a computer program is provided, which enables a computer to execute the method as described in the first aspect or the second aspect.

[0015] In the embodiment of the present application, the first communication device can determine, based on the first notification, that a paging call has not been successfully received or may not be successfully received, and thus issue an alarm prompt. Thus, when the first communication device loses a paging call or is in a state where it cannot normally receive a paging call, the second communication device can alert the first communication device through the first notification. Furthermore, the first communication device can alert the user through an alarm prompt, so that the user can determine whether to quickly convert the terminal device's state to a state where it can normally receive paging calls. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a wireless communication system used in an embodiment of the present application.

[0017] FIG2 is an NTN system used in an embodiment of the present application.

[0018] FIG3 is another NTN system applied in an embodiment of the present application.

[0019] FIG4 is a schematic diagram of a possible scenario in which a terminal device is in discontinuous coverage.

[0020] Figure 5 is a schematic diagram of an energy-saving configuration introduced by the Internet of Things.

[0021] FIG6 is a schematic diagram of another energy-saving configuration introduced by the Internet of Things.

[0022] FIG7 is a flow chart of a method for wireless communication provided in an embodiment of the present application.

[0023] FIG8 is a schematic diagram of a possible implementation of the method shown in FIG7 .

[0024] FIG9 is a schematic diagram of another possible implementation of the method shown in FIG7 .

[0025] FIG10 is a schematic diagram of yet another possible implementation of the method shown in FIG7 .

[0026] FIG11 is a schematic structural diagram of a device for wireless communication provided in an embodiment of the present application.

[0027] FIG12 is a schematic structural diagram of another apparatus for wireless communication provided in an embodiment of the present application.

[0028] FIG13 is a schematic structural diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. With respect to the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] The embodiments of the present application can be applied to various communication systems. For example, the embodiments of the present application can be applied to global system of mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, advanced long term evolution (LTE-A) system, new radio (NR) system, evolution system of NR system, LTE-based access to unlicensed spectrum (LTE-U) system on unlicensed spectrum, NR-based access to unlicensed spectrum (NR-U) system on unlicensed spectrum, NTN system, universal mobile telecommunication system (UMTS), wireless local area networks (WLAN), wireless fidelity (WiFi), and fifth generation communication (5th-generation, 5G) system. The embodiments of the present application can also be applied to other communication systems, such as future communication systems. The future communication system may be, for example, a sixth-generation (6G) mobile communication system or a satellite communication system.

[0031] Traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, communication systems can not only support traditional cellular communications, but also support one or more other types of communications. For example, a communication system can support one or more of the following communications: device to device (D2D) communication, machine to machine (M2M) communication, machine type communication (MTC), enhanced machine type communication (eMTC), vehicle to vehicle (V2V) communication, and vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to communication systems that support the above-mentioned communication methods.

[0032] The communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, and a standalone (SA) networking scenario.

[0033] The communication system in the embodiments of the present application can be applied to unlicensed spectrum. The unlicensed spectrum can also be considered a shared spectrum. Alternatively, the communication system in the embodiments of the present application can also be applied to licensed spectrum. The licensed spectrum can also be considered a dedicated spectrum.

[0034] The embodiments of the present application can be applied to an NTN system. As an example, the NTN system can be a 4G-based NTN system, an NR-based NTN system, an Internet of Things (IoT)-based NTN system, or a narrowband Internet of Things (NB-IoT)-based NTN system.

[0035] A communication system may include one or more terminal devices. The terminal devices mentioned in the embodiments of the present application may also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0036] In some embodiments, the terminal device may be a station (ST) in a WLAN. In some embodiments, the terminal device may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a next-generation communication system (e.g., a NR system), or a terminal device in a future-evolved public land mobile network (PLMN).

[0037] In some embodiments, a terminal device may be a device that provides voice and / or data connectivity to a user. For example, the terminal device may be a handheld device, an in-vehicle device, etc. with wireless connection capabilities. As some specific examples, the terminal device may be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc.

[0038] In some embodiments, the terminal device can be deployed on land. For example, the terminal device can be deployed indoors or outdoors. In some embodiments, the terminal device can be deployed on the water, such as on a ship. In some embodiments, the terminal device can be deployed in the air, such as on an airplane, a balloon, or a satellite.

[0039] In addition to the terminal device, the communication system may also include one or more network devices. The network device in the embodiment of the present application may be a device for communicating with the terminal device, and the network device may also be referred to as an access network device or a radio access network device. The network device may be, for example, a base station. The network device in the embodiment of the present application may refer to a radio access network (RAN) node (or device) that connects the terminal device to a wireless network. A base station may broadly cover various names as follows, or be replaced with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master station (MeNB), secondary station (SeNB), multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. A base station may also refer to a communication module, modem, or chip used to be set in the aforementioned device or apparatus. A base station may also be a mobile switching center and a device that performs base station functions in D2D, V2X, and M2M communications, a network-side device in a 6G network, or a device that performs base station functions in future communication systems. A base station may support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific device form used by network devices.

[0040] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0041] In some deployments, the network device in the embodiments of the present application may refer to a CU or a DU, or the network device may include a CU and a DU. The gNB may also include an AAU.

[0042] By way of example and not limitation, in embodiments of the present application, a network device may be mobile, for example, a mobile device. In some embodiments of the present application, the network device may be a satellite or balloon station. In some embodiments of the present application, the network device may also be a base station located on land, water, or the like.

[0043] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0044] For example, Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application. As shown in Figure 1, the communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or also referred to as a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographic area and may communicate with terminal devices located within the coverage area.

[0045] FIG1 exemplarily shows a network device and two terminal devices. In some embodiments of the present application, the communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited.

[0046] For example, Figure 2 illustrates an architecture diagram of the aforementioned NTN system. NTN system 200 in Figure 2 utilizes satellite 210 as an aerial platform. As shown in Figure 2, the satellite radio access network includes satellite 210, service link 220, feeder link 230, terminal equipment 240, gateway (GW) 250, and network 260, including base stations and a core network.

[0047] Satellite 210 is a spacecraft based on a space platform. Service link 220 refers to the link between satellite 210 and terminal device 240. Feeder link 230 refers to the link between gateway 250 and satellite 210. The earth-based gateway 250 connects satellite 210 to a base station or core network, depending on the selected NTN architecture.

[0048] The NTN architecture shown in Figure 2 is a bent-pipe transponder architecture. In this architecture, a base station is located on Earth behind gateway 250, with satellite 210 acting as a relay. Satellite 210 operates as a relay, forwarding signals from feeder link 230 to service link 220, or vice versa. In other words, satellite 210 does not function as a base station; communications between terminal device 240 and base stations in network 260 must be relayed through satellite 210.

[0049] Figure 3 illustrates another NTN system architecture. As shown in Figure 3, satellite radio access network 300 includes satellite 310, service link 320, feeder link 330, terminal equipment 340, gateway 350, and network 360. Unlike Figure 2, satellite 310 has a base station 312, while network 360 behind gateway 350 consists solely of a core network.

[0050] The NTN architecture shown in Figure 3 is a regenerative transponder architecture. In this architecture, satellite 310 carries base station 312, which can be directly connected to the Earth-based core network via a link. Satellite 310 functions as a base station, and terminal device 340 can communicate directly with satellite 310. Therefore, satellite 310 can be referred to as a network device.

[0051] The communication system of the architecture shown in Figures 2 and 3 may include multiple network devices, and each network device may include other number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0052] In the embodiment of the present application, the communication system shown in Figures 1 to 3 may also include other network entities such as a mobility management entity (MME) and an access and mobility management function (AMF), but the embodiment of the present application does not limit this.

[0053] It should be understood that in the embodiments of the present application, a device having a communication function in a network / system may be referred to as a communication device. Taking the communication system 100 shown in FIG1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function. The network device 110 and the terminal device 120 may be the specific devices described above and will not be described in detail here. The communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in the embodiments of the present application.

[0054] For ease of understanding, some relevant technical knowledge involved in the embodiments of this application is first introduced. The following related technologies can be combined with the technical solutions of the embodiments of this application as optional solutions, and they all fall within the scope of protection of the embodiments of this application. The embodiments of this application include at least part of the following contents.

[0055] As communication technologies develop, communication systems (e.g., 5G) will integrate the market potential of satellite and terrestrial network infrastructure. For example, the 5G standard makes NTN, including satellite segments, part of the recognized 3rd Generation Partnership Project (3GPP) 5G connectivity infrastructure.

[0056] NTN refers to a network or network segment that utilizes radio frequency (RF) resources on satellite or unmanned aerial system (UAS) platforms. Taking satellites as an example, communications satellites are categorized by orbital altitude into low Earth orbit (LEO), medium Earth orbit (MEO), geostationary Earth orbit (GEO), and high elliptical orbit (HEO). LEO is an Earth-centered orbit with an altitude of 2,000 kilometers or less, or with at least 11.25 cycles per day and an eccentricity of less than 0.25. Most man-made objects in outer space are located in LEO. LEO satellites orbit the Earth at high speed (mobility) but in predictable or deterministic orbits.

[0057] Satellites at different orbital altitudes have different orbital periods. For example, LEO typically has an altitude of 250-1500 kilometers and an orbital period of 90-120 minutes. MEO typically has an altitude of 5000-25000 kilometers and an orbital period of 3-15 hours. GEO has an altitude of approximately 35786 kilometers and an orbital period of 24 hours.

[0058] As shown in Figures 2 and 3, which used satellites as examples, typical scenarios for terminal devices accessing the NTN system involve either an NTN transparent payload or an NTN regenerative payload. The bent-pipe transponder architecture shown in Figure 2 corresponds to the NTN transparent payload, while the regenerative transponder architecture shown in Figure 3 corresponds to the NTN regenerative payload.

[0059] In an NTN system, a communication device can infer the trajectory of a serving cell that a satellite can provide service based on the satellite's ephemeris and epoch time. For example, a terminal device can estimate the trajectory of a serving cell on the Earth by predicting the satellite's position.

[0060] In some embodiments, a service cell in an NTN is typically an area served by one or more satellites. For example, multiple satellites may form a satellite constellation to provide services to terminal devices in an NTN cell.

[0061] However, in an NTN, especially for Earth mobile cells, satellite coverage is limited. Even during satellite constellation operation, ground-based terminal devices may experience periods of no network coverage. That is, under NTN coverage, terminal devices may experience discontinuous network coverage. For example, when the current or next satellite covers the area where the terminal device is located, the terminal device is in a communication state with network coverage. Conversely, when the current satellite leaves the terminal device's area and the next satellite has not yet covered that area, the terminal device is in a coverage gap with no network coverage.

[0062] In some embodiments, due to the limited number of satellites in orbit, network coverage may be discontinuous for a terminal device on the ground. For example, in an IoT-based Earth mobile cell, a terminal device may not be served by any satellite at a given moment. In other words, when the IoT is covered by an NTN, the IoT device may experience discontinuous coverage in the time domain, rather than in the spatial domain.

[0063] In some embodiments, even if a terminal device is within the geographic coverage area of ​​a satellite, the satellite's beam coverage may not include the terminal device. In this scenario, the terminal device may also be in an area of ​​discontinuous coverage. For ease of understanding, the following example uses a mobile cell as an example, combined with a discontinuous coverage scenario shown in Figure 4 for exemplary description.

[0064] In the NTN system shown in Figure 4 , terminal device 410 and terminal device 420 are both located within the geographic coverage area of ​​satellite 430. Terminal device 410 is located near position 401 of satellite 430, which is perpendicular to the ground, while terminal device 420 is located near position 402. As shown in Figure 4 , the center of the beam transmitted by satellite 430 at epoch time t corresponds to ground position 402, and satellite 430 can provide service to terminal device 420. However, because the beam center is not perpendicular to satellite 430's ground projection position 401, satellite 430 cannot provide service to terminal device 410, resulting in discontinuous coverage for terminal device 410.

[0065] As shown in Figure 4, discontinuous network coverage may occur under NTN coverage. However, TN systems, such as LTE, NB-IoT, eMTC, NR, or other communication systems, may exist in areas covered by NTN or areas without NTN coverage.

[0066] In some embodiments, the coverage area of ​​an NTN cell served by a satellite is typically relatively large. For example, an NTN cell may cover both an ocean area and a land area. Another example is that an NTN cell may include many available land cells. Land cells may also be referred to as terrestrial network (TN) cells or TN areas.

[0067] As an example, for NB-IoT or MTC systems, the TN area can have a dedicated NB-IoT base station.

[0068] As an example, enhanced mobile broadband (eMBB), ultra-reliable low latency communications (uRLLC), massive machine type communications (mMTC), and LTE or NR networks can be implemented on a single platform based on slicing. For example, these different applications or networks can be implemented on a single platform through software implementation.

[0069] When a terminal device is in a discontinuous coverage scenario, its communications must take into account the absence of network coverage. For example, when a terminal device attempts to establish a connection during satellite coverage, the remaining coverage time may be too short to complete the connection establishment.

[0070] Optionally, the terminal device can predict the time it will lose network coverage to check whether the remaining time of the current cell coverage is sufficient to meet the needs of connection establishment, thereby ensuring that the terminal device can successfully establish communication with the satellite. In addition, for terminal devices that are about to lose network coverage, they can also prepare (for example, enter the RRC idle state (RRC_idle) or dormant state) to further save power.

[0071] As an example, a terminal device can obtain satellite ephemeris information and then determine a critical time at the edge of satellite signal coverage based on the terminal device's location and ephemeris information. This critical time can be used to determine recommended information for the terminal device to perform a state transition. For example, the critical time can be used to determine the time at which the terminal device leaves the satellite signal coverage area. This time can be used to determine the duration of time the terminal device remains within the satellite signal coverage area. This duration can be used to determine the duration of the terminal device's wake-up in the recommended information.

[0072] As an example, for a terrestrial fixed cell served by a non-geostationary orbit (NGSO) satellite, the network can provide the cell downtime, such as service time (T-service). The terminal device can estimate its arrival time at the cell edge based on the service time.

[0073] As an example, the terminal device may also estimate satellite parameters based on global navigation satellite system (GNSS) positioning information and estimate the time it will take to arrive at the cell edge.

[0074] As an example, based on the predicted time information, both the terminal device and the network can determine when to start discontinuous coverage or when to release the terminal device to RRC_idle, thereby achieving synchronization. In the mobile cell scenario, the stop time of the fixed cell cannot be used. When the terminal device predicts discontinuous coverage based solely on location information, the prediction result may also be inaccurate, as shown in Figure 4.

[0075] Optionally, the NTN can provide terminal devices with auxiliary information to predict discontinuous coverage. In other words, the terminal device can obtain NTN coverage information based on the auxiliary information. When the terminal device is outside the NTN coverage area, it can bypass idle mode tasks and enter a dormant state directly. This is because the terminal device still needs to receive paging messages in the idle state. Alternatively, the terminal device can deactivate the access stratum (AS) function of the terrestrial network, eliminating the need to perform cell searches on the TN even in the idle state.

[0076] For example, when a terminal device is in an NTN, assistance information may include information related to the satellite's network coverage, such as satellite ephemeris information. Based on this assistance information, the terminal device can predict whether it will lose network coverage of a satellite and whether it is currently within the satellite's network coverage. For example, the terminal device can determine the time information associated with losing network coverage. This time information may include at least one of the following: the duration of the period without network coverage, the time when the period entered the period without network coverage, and the time when network coverage returned.

[0077] Optionally, the terminal device can predict and calculate the boundaries of the TN service cell. If the satellite cannot reach the terminal device, the terminal device can select a TN cell and enter the TN area to meet the terminal device's communication needs. As a possible implementation, considering the characteristics of NTN, the network can configure measurements in TN frequencies to have a higher priority than those in NTN.

[0078] As an example, the system can notify the terminal device of the frequency, location, and other information of a specific TN area within the NTN area through broadcast / system messages (e.g., system information block (SIB)). For example, the method in which the NR NTN provides TN area information to the terminal device for the terminal device to perform TN measurements can also be used for discontinuous coverage of the IoT NTN. That is, the IoT NTN provides TN area information. When the terminal device is in discontinuous coverage, the terminal device activates the AS function to the TN based on the TN area information.

[0079] As an example, the priorities of different frequencies in the TN system or the frequency priorities of different systems can come from dedicated signaling such as SIB or radio resource control (RRC) release (RRCRelease). For example, when there is no reselection priority configured for different frequencies in the SIB, the terminal device may not perform cell reselection measurements. For another example, dedicated signaling can set the frequency priority in the NTN area. If the dedicated signaling configures the frequency priority, the terminal device can ignore all priorities from the SIB.

[0080] As an example, for a quasi-earth mobile cell, the broadcast coverage cell may provide a TN frequency list within the coverage area at different times, and the frequency list may be updated periodically.

[0081] The preceding article describes discontinuous coverage scenarios under NTN, using the IoT as an example. Applications such as the IoT and machine-to-communication (MTC) are experiencing exponential growth and are expected to play a key role in future networks and systems. In these systems, terminal devices transmit data infrequently and do not require constant communication with network devices. To conserve energy, the network can configure various energy-saving modes for terminal devices.

[0082] For example, NB-IoT is mainly designed for infrequent small data packet traffic and does not require a handover process in the RRC connected state (RRC connected). When the serving cell of the NB-IoT terminal device needs to be changed, the terminal device can perform RRC release, thereby entering the idle state, and then reselect to another cell. After the terminal device completes the cell selection and resides in the new serving cell, it can start the measurement of the neighboring cell based on the frequency of the neighboring cell and the measurement value of the serving cell in the system message broadcast by the serving cell.

[0083] For example, NB-IoT terminal devices do not support emergency dialing. If the terminal device cannot find a suitable cell during reselection, the terminal device will not temporarily reside in an acceptable cell, but will continue searching until a suitable cell is found.

[0084] Exemplarily, NB-IoT can support three energy-saving modes, namely power saving mode (PSM), discontinuous reception (DRX) mode and extended discontinuous reception (DRX) mode. In PSM mode, the terminal device does not need to receive paging to detect whether there is downlink service. Compared with the DRX mode, the terminal device in the eDRX mode will have a longer paging detection cycle. For ease of understanding, the different energy-saving modes are illustrated below in conjunction with Figures 5 and 6. In Figures 5 and 6, the horizontal axis is time and the vertical axis is energy consumption.

[0085] As shown in Figure 5, a terminal device can transmit data in the active state, which consumes more energy, while in the idle state, it primarily receives data, which consumes less energy. After a period of idle state without re-entering the active state, the terminal device directly enters the lower-energy PSM state. The duration of the terminal device's idle state is the duration of the T3324 timer.

[0086] Continuing with Figure 5, a complete Tracking Area Update (TAU) cycle is the sum of the durations of the Idle and PSM states. The duration of a TAU cycle is defined as the duration of the T3412 timer. Therefore, T3412 is the TAU duration, while T3324 is the timer for entering the PSM state from the Idle state.

[0087] Figure 6 schematically illustrates the relevant parameters in eDRX mode. The minimum interval in traditional DRX mode is 2.56 seconds (DRX cycle), which is too frequent for IoT devices, where data transmission is infrequent. To further reduce the power consumption associated with monitoring paging, NB-IoT introduces enhanced discontinuous reception (eDRX) technology. Within each eDRX cycle, there is a paging time window (PTW). During the PTW, the terminal device monitors and responds to paging messages sent by the network.

[0088] The above describes various energy-saving modes and related parameters of the eDRX mode in conjunction with Figures 5 and 6. As can be seen from Figures 5 and 6, the energy consumption of the terminal device in the idle state and PSM state is low, thus achieving energy saving.

[0089] As mentioned above, during periods of discontinuous coverage, especially periods of no network coverage, terminal devices may not receive paging. In this case, the terminal device, acting as a paging receiving node, may miss some important messages. The terminal device may need or wish to know about these important paging messages, which can help the user confirm the paging message or contact the originating node of the important paging.

[0090] Alternatively, IoT devices may not need to respond to network paging calls promptly, but they do need to know which pages they may have missed. This is especially true in discontinuous coverage scenarios, where devices may not receive paging calls when they are not covered. How IoT devices function in this scenario is a question worth studying.

[0091] On the other hand, important paging messages also include safety-related and emergency paging. If a terminal device misses these paging messages, it may cause serious problems. Therefore, a new mechanism is needed to ensure the reachability of terminal devices to the greatest extent possible.

[0092] Alternatively, when receiving a call on a mobile device, the terminal device may be in a scenario with poor reception. For example, the terminal device may be placed in a pocket, backpack, vehicle, boat, or building. Another example is when the terminal device is in a scenario with a blocked wireless path or degraded wireless link quality. In these scenarios, users may experience poor reception and miss calls and messages, which can be very detrimental for safety-related or emergency paging messages.

[0093] It should be noted that the above-mentioned problem of the terminal device not being able to receive paging due to the discontinuous coverage of the Internet of Things NTN system is only an example. The embodiments of the present application can be applied to any type of scenario where the terminal device may not receive paging.

[0094] Based on this, an embodiment of the present application proposes a method for wireless communication. Using this method, a first notification received by a first communication device (e.g., a terminal device) can indicate a paging that has been lost or may be lost. The first communication device can provide a warning prompt to the user based on the first notification. As can be seen, the user can move to a location where they can receive the paging as soon as possible based on the warning prompt, or contact the initiating node of the lost paging to avoid missing important information.

[0095] For ease of understanding, the method proposed in the embodiment of the present application is described in detail below with reference to Figure 7. Figure 7 is described from the perspective of interaction between a first communication device and a second communication device.

[0096] 7 , in step S710 , a first communication device receives a first notification (alert) sent by a second communication device.

[0097] The first communication device can be any terminal device or repeater that receives paging, and is not limited here. In some embodiments, the first communication device is a terminal device with a low service transmission rate or a small amount of data transmission, such as an NB-IoT terminal or an MTC terminal. In some embodiments, the first communication device is a device that supports energy-saving or low-power configuration, such as supporting DRX configuration or eDRX configuration.

[0098] As an embodiment, the first communication device may be any type of terminal device described above, such as a UE.

[0099] As an embodiment, the first communication device is a terminal device of the NTN system. The terminal device may be located within the coverage area of ​​the satellite. For example, the first communication device is a terminal device in the NTN Internet of Things.

[0100] As an embodiment, the first communication device is a communication device in any communication system that can receive paging.

[0101] As an embodiment, the first communication device is a device that is broadcast or configured to perform an action using the first notification.

[0102] The first communication device may be a terminal device at a fixed position or a terminal device in motion, which is not limited here. For example, the first communication device may be a terminal device on a running high-speed train.

[0103] In some embodiments, the second communication device sends the first notification to the first communication device, and the first communication device is in any state capable of receiving the notification. For example, the first communication device may be in an RRC active state. In another example, the first communication device may be in an RRC idle state.

[0104] The second communication device can be any network device that sends the first notification to the first communication device. In some embodiments, the second communication device comprises a satellite in an NTN system, and the first communication device is a terminal device that communicates via the satellite. For example, when a base station is deployed on a satellite, the first communication device communicates directly with the base station on the satellite. For example, when a satellite acts as a relay, the first communication device communicates with a network device on the ground via the satellite.

[0105] As an embodiment, when the second communication device includes a satellite, the first communication device is currently located within a service area of ​​the satellite to receive the first notification via the satellite.

[0106] In some embodiments, the second communication device may also be any network-side device that sends paging. The network-side device may include the network devices described above, or may include core network (CN)-side communication devices. As an example, the second communication device may be a RAN node, such as a base station. As an example, the second communication device may be a network element in the core network that sends paging.

[0107] In some embodiments, the communication device that sends the paging request is related to the state of the first communication device. For terminal device states other than RRC active, the RAN typically does not detect paging failures; instead, the core network performs this detection. This means that when the first communication device is in RRC idle or RRC inactive, the RAN may not know the actual reason for paging the first communication device. For example, in an emergency, the core network will directly initiate the paging request.

[0108] As an example, when a radio link failure occurs, the network-side device may send many downlink Internet Protocol (IP) data packets to the first communication device.

[0109] As an embodiment, when the second communication device is a network element of the core network, the first notification may be sent to the first communication device via the base station. In this case, the second communication device may include a base station and related devices in the core network.

[0110] As an embodiment, when the second communication device is a network element of the core network, the first notification can be sent directly to the first communication device.

[0111] In some embodiments, the paging received by the first communication device and the first notification may originate from different network-side devices. That is, the second communication device may not include the network device that sent the paging to the first communication device. In one embodiment, the second communication device is the base station that sent the first notification, and the paging received by the first communication device originates from a network-side device other than the second communication device. After determining the content of the first notification, the network device that sent the paging may then send the first notification to the first communication device via the second communication device.

[0112] As an embodiment, the satellite that sends the first notification may be the first satellite that sends the paging, or may be the second satellite that is subsequently covered.

[0113] The first notification is used to indicate one or more pagings within a first time period. In some embodiments, the start and end times or the duration of the first time period can be determined based on the state of the first communication device, the paging transmission cycle, or the cycle in which the first communication device detects paging or the second communication device receives paging responses.

[0114] In some embodiments, the first time period may be any time period during which the first communication device cannot successfully receive a paging call.

[0115] As an example, the first time period may be a time period during which paging is lost before the first notification is sent. For example, when the first communication device is in an idle state with poor link quality, the first time period may be a time period during which the first communication device is in an idle state.

[0116] As an example, the first time period may be a time period during which paging may not be received after the first notification is sent. For example, when the first communication device is in a discontinuous coverage scenario, the first time period may be a time period during which the first communication device is out of network coverage.

[0117] In some embodiments, for a terminal device in the Internet of Things, the first time period may be related to a period for the terminal device to detect paging.

[0118] As an embodiment, the first time period may include one or more DRX cycles during which the first communication device is in an idle state. For example, the first time period may be one or more DRX cycles before the first notification is sent within the idle state time period.

[0119] As an embodiment, the first time period may include one or more eDRX cycles in which the first communication device is in an idle state.

[0120] As an example, the length of the DRX cycle or eDRX cycle is configurable. For example, the system information may provide a default DRX cycle length. In another example, dedicated signaling may provide the first communication device with its specific DRX cycle length.

[0121] As an example, the number of paging times in a DRX cycle or an eDRX cycle is configurable and may be provided in system information.

[0122] The number of pagings in the one or more pagings is not limited. In some embodiments, the number of pagings may be related to the length of the first time period. For example, when the first time period is one DRX cycle, the first notification indicates one paging in the first time period. For another example, when the first time period is multiple DRX cycles, the first notification indicates multiple paging in the first time period.

[0123] The one or more pages may include pages that the first communication device has not successfully received and / or pages that the first communication device cannot successfully receive in its current state. In other words, the one or more pages may include one or more pages that the first communication device has missed and / or one or more pages that the first communication device may miss if it does not adjust its current state.

[0124] As an embodiment, the one or more paging messages may be paging messages related to the first communication device. In other words, the one or more paging messages are paging messages sent by the second communication device or other network-side devices to the first communication device.

[0125] The paging that the first communication device does not successfully receive may be replaced by one of the following: a paging that the first communication device cannot receive, a paging that the first communication device loses, or a paging to which the second communication device does not receive a paging response.

[0126] In some embodiments, when the first communication device is unable to receive paging, the one or more paging messages are unreceivable paging messages. For example, if a first communication device is in discontinuous coverage and is not in a network coverage scenario, it cannot receive paging messages. For another example, if the first communication device is an IoT terminal in the PSM state, it cannot receive paging messages. For another example, if the first communication device fails to reselect a TN cell or has not found a cell to reside in, it cannot detect normal paging messages from the network.

[0127] In some embodiments, the first communication device is in a state where it can receive paging, and the one or more pages are unreceived pages. In other words, the first communication device is performing paging detection but has missed the paging. For example, if the first communication device is in an idle state and is in an environment with low communication quality or coverage, it may not be able to detect normal paging from the network.

[0128] As an embodiment, the communication quality can be represented by various parameters such as signal-to-noise ratio (SNR), reference signal received quality (RSRQ), etc., which are not limited here. For the sake of simplicity, the following description will take SNR as an example.

[0129] In some embodiments, a first communications device receives a paging message, but a second communications device does not receive a paging response from the first communications device. For example, due to good downlink (DL) coverage, the first communications device may detect the paging message. However, due to insufficient uplink (UL) signal-to-noise ratio (SNR), the first communications device may not be able to establish a paging message via an RRC resuming connection, and the network may not receive a paging response or similar information.

[0130] The first communication device being unable to successfully receive the paging in the current state may mean that the first communication device may not be able to successfully receive the paging sent by the second communication device or other network devices if the first communication device maintains the current state.

[0131] In some embodiments, the current state may be a communication state in which the first communication device cannot receive normal paging. For example, when the first communication device is in an RRC idle state and has poor uplink coverage, it may not be able to receive paging from the network side. In this scenario, the first communication device may transition to an RRC active state with stronger uplink coverage based on the first notification.

[0132] In some embodiments, the current state may be the communication scenario currently in which the first communication device is located. For example, the first communication device is in a discontinuous NTN coverage scenario and, after entering a no-network coverage scenario, is unable to receive paging from the network side. Based on the first notification, the first communication device may switch from the NTN cell to a nearby TN cell to receive paging, as will be described later in conjunction with an NTN embodiment.

[0133] In some embodiments, the current state may be the communication environment currently located by the first communication device. For example, the first communication device may be in an environment with poor uplink and / or downlink coverage and may therefore be unable to receive paging. In this scenario, the first communication device may, based on the first notification, remind the user to move to an environment with better coverage, thereby adjusting the current state.

[0134] The second communication device may determine one or more pages within the first time period in a variety of ways to generate the first notification.

[0135] In some embodiments, after sending the paging, the second communication device or the network device sending the paging may determine whether the first communication device successfully received the paging based on the received paging response. For example, if the network does not receive a paging response or similar information within one or several DRX cycles after sending the paging to the first communication device, the paging may be confirmed to be lost by the first communication device.

[0136] In some embodiments, when a paging message needs to be sent to the first communication device, the second communication device may determine the first notification based on the communication state of the first communication device. The communication state may be the state described above where the first communication device cannot successfully receive the paging message.

[0137] As an embodiment, when the first communication device is unable to successfully receive a paging call in the current state, the second communication device can set a specific program to send a first notification to remind the first communication device of a new call. For example, if the first communication device is in an environment with relatively poor uplink and downlink SNRs, it may not be able to receive a paging call. The network side needs a specific program to remind and alert the first communication device of the paging call. For another example, if the first communication device is in an idle state, the network side can send a dedicated notification / alarm signal (first notification).

[0138] As an embodiment, the second communication device may predict or estimate the communication state of the first communication device within the first time period to determine whether to send the first notification. The following will provide an exemplary description of the prediction method of the second communication device.

[0139] As an embodiment, in certain scenarios, even if the first communication device adjusts its current state, it cannot receive paging, and the first notification can send the paging that the first communication device has lost. For example, when TN is unavailable, the first communication device cannot switch to the TN area and can only be in the NTN area. The first communication device may be in the unreachable time. In the unreachable state, the first communication device cannot receive paging and the first notification sent by the network. After the first communication device sends the network the time and duration of its unreachability, the network will send the first notification after the unreachable time of the first communication device ends.

[0140] In some embodiments, the second communication device may send the first notification according to a priority. For example, the priority of the first notification is higher than the priority of a normal paging call, but lower than the priority of an emergency call.

[0141] In some embodiments, the second communication device may send the first notification according to a paging timeout mechanism to confirm that the paging message can be successfully received. The first notification is sent when one or more conventional paging signals fail to contact the user.

[0142] As an example, in a discontinuous coverage scenario, the first communication device may enter an idle state before leaving the coverage area. When the first communication device enters the idle state and is within a coverage area with a low SNR, the reachability of the first communication device is very important. To ensure that the paging message is received, the second communication device may promptly alert the first communication device through a first notification if one or more regular paging signals fail to reach the user.

[0143] The first notification may also include more information to facilitate the first communication device and the user to determine whether to contact the originating node of the lost paging, or to determine whether to adjust the current status, thereby improving communication efficiency.

[0144] In some embodiments, the first notification may also include one or more of the following information: a message identifier (ID) corresponding to the first notification; the number of one or more pagings; the initiating node of some or all of the one or more pagings; the type of event corresponding to one or more pagings; the priority of the event corresponding to one or more pagings; and the time parameters of the event corresponding to one or more pagings.

[0145] Optionally, the first notification may include a message ID used to send the first notification. When the first notification is a sequence, the message ID may include a sequence number. For example, the second communication device may include the selected message ID and sequence number in the first notification or append it to the first notification.

[0146] As an example, the message ID can be customized to uniquely identify parameters and / or delivery preferences associated with the message. The delivery preferences can be priority, wait time, intended device, etc. associated with the first notification. For example, the message ID can be used to determine the priority of the transmission.

[0147] Optionally, the first notification may include one or more paging numbers. As an example, for some IoT terminals that do not need to respond to paging in a timely manner, the terminal device may judge the severity of the matter based on the number of times it has been paged.

[0148] Optionally, the first notification may include the initiating nodes of some or all of the one or more paging requests. When the first communications device determines that the initiating node is a device that requires a response, it may promptly contact the initiating node or move to a location with a better SNR. When the first communications device determines that a response to the initiating node is not necessary, it may not contact the initiating node or adjust its status, thereby saving power.

[0149] Optionally, the first notification may include the number of one or more paging requests and the initiating node. For example, the first notification may include information parameters such as how many times the terminal device has been paged and from whom the paging originated. In this scenario, the first notification can help the user better determine whether a response to the paging request is necessary and whether to switch networks or move to a location with a better signal-to-noise ratio (SNR).

[0150] Optionally, the first notification may include information related to one or more events corresponding to the paging. The event may be the time when the paging is initiated or an event related to the paging. For example, the information related to the event may include the type, priority, and time parameters of the event.

[0151] As an example, the first notification may include a text message describing the event, the location of the event, etc. The first communication device may generate an appropriate alert message based on the received event information and / or the determined context data.

[0152] As an example, the relevant information about an event may include the event type, event severity, category of the first communication device, event priority, location and / or size of the area corresponding to the first notification, latency attributes associated with the delivery of the first notification, and a message ID. Furthermore, the relevant information about an event may also include, but is not limited to, historical patterns and / or trends, device behavior, user preferences, service provider preferences and / or policies, event location, current time / date, weather conditions, news, scheduled events in the relevant area, and the like. Scheduled events include, for example, concerts, parades, political rallies, and football games.

[0153] In some embodiments, the first notification includes a first sequence. For example, the first notification may be the first sequence. For example, the first notification may be carried in the first sequence. The first sequence may be a physical signal sequence, for example, the first sequence includes an M sequence or a Gold sequence.

[0154] As an example, the first sequence is carried on a dedicated SIB or a dedicated signal for broadcasting the first notification for transmission.

[0155] In some embodiments, when generating or scrambling the first sequence, parameters related to the first communication device or the first notification may be used. For example, the first sequence may be generated and / or scrambled based on at least one of the following parameters: a physical cell ID; a temporary mobile subscriber identifier (TMSI) of the first communication device; an index of a starting time domain position of a sending opportunity of the first notification; an index of a synchronization signal block associated with the first notification; and an index of a time domain position associated with a first physical downlink control channel (PDCCH) corresponding to the first paging.

[0156] As an embodiment, the first paging may be the first paging within the first time period. The first paging may be the first paging among one or more pagings, or may not be the first paging among the one or more pagings. In other words, the first paging within the first time period may be a paging that the first communication device did not successfully receive, or may be a paging that the first communication device successfully received.

[0157] In some embodiments, the second communication device may send the first notification in a variety of ways. Optionally, the first notification may be carried in one or more of the following: a short message, a dedicated channel, and a system information block (SIB).

[0158] As an example, the second communication device may send a short messaging service (SMS) / data notification from an Internet Protocol Multimedia Subsystem (IMS) server to the first communication device via NB-IoT. In other words, the first notification may be sent via a short message.

[0159] As an embodiment, the first notification may be sent via a dedicated channel. For example, the system may establish a dedicated paging alert notification channel to facilitate sending the first notification for prompting in an emergency.

[0160] As an embodiment, the second communication device may send a first notification through an SIB, such as SIB20. The first notification may also be a message. Exemplarily, the SIB may transmit the first notification through the Uu wireless interface in the logical channel corresponding to the broadcast control channel (BCCH). Optionally, the BCCH message is carried on a downlink shared channel (DL-SCH) and transmitted on a physical downlink shared channel (PDSCH). Optionally, the SIB for transmitting notification data may be configured to carry broadcast data. The broadcast data targets one or more categories of IoT devices in a selected area.

[0161] As an embodiment, the first notification may be included in the control channel, that is, the first notification is sent when the control channel is sent.

[0162] As an embodiment, the first notification may be sent separately. For example, the control channel may be sent after the first notification.

[0163] In some embodiments, the transmission beam of the first notification may be associated with a synchronization signal block. As an embodiment, the first notification may have a one-to-one association with the synchronization signal block. The first notification and the associated synchronization signal block use the same beam direction.

[0164] As an embodiment, the first notification has a one-to-many association with the synchronization signal blocks actually sent in the reference synchronization signal block set. The beam direction used by the first notification is one of the beam directions of the associated multiple synchronization signal blocks.

[0165] In some embodiments, the transmission parameters of the first notification include parameters such as the number of times the first notification is transmitted, the timing of transmission, and the alert period. The transmission parameters of the first notification are determined based on one or more of the following parameters: the first paging opportunity and the first offset within the first time period; the end time and the second offset of the first time period; the first notification level corresponding to the first notification; the number of first cycles included in the first time period; and a first quality parameter of the signal transmitted by the first communication device at the first moment.

[0166] As an embodiment, the first time period includes multiple paging occasions, and the sending timing of the first notification can be determined based on the start and end times and / or paging occasions in the first time period.

[0167] As an example, the sending timing of the first notification may be determined based on the first paging opportunity and the first offset within the first time period. In other words, the first paging opportunity and the first offset are used to determine the sending timing of the first notification.

[0168] Exemplarily, the start time of sending the first notification may be the sum of the first paging occasion end time and the first offset.

[0169] Exemplarily, the start time of sending the first notification may be the sum of the first paging occasion start time and the first offset.

[0170] It should be noted that if the second communication device receives a paging response within the time period corresponding to the first offset, it does not send the first notification.

[0171] As an example, the timing of sending the first notification can be based on the end time of the first time period and the second offset. In some scenarios, the second offset can allow the first communications device to have a buffer and decision period before entering the PSM state. Based on this period, the first communications device can determine whether to enter the PSM state directly or establish a connection with the network to receive a cached paging message from the network.

[0172] Exemplarily, the start time of sending the first notification may be the difference between the end time of the first time period and the second offset.

[0173] Exemplarily, the first offset or the second offset is determined based on the service type and / or the first notification level of the first communication device. For example, the second communication device may select the first offset or the second offset of a size corresponding to the service type of the first communication device. For another example, the second communication device may select the first offset or the second offset based on the first notification level.

[0174] Optionally, the number of times the first notification is sent may also be referred to as the number of repetitions of the first notification. Optionally, if the first notification is important, the second communication device may send the first notification multiple times to better remind the user to contact the initiating node or adjust the current status. Optionally, if the quality and / or strength of the signal related to the terminal device is poor, the first notification may be sent multiple times as a reminder.

[0175] Optionally, the number of times the first notification is sent may be the number of times within a DRX cycle or an eDRX cycle, or the total number of times sent within the entire first time period, without limitation herein. As an example, the second communications device may select the number of repetitions of the first notification from a list. The list may be mapped to the DRX or eDRX cycle length.

[0176] Optionally, the sending period of the first notification can be determined based on the number of transmissions and the first time period. For example, the first notification can be sent after each DRX paging opportunity of the PTW or after several DRXs. The PTW can determine or directly serve as the sending period of the first notification.

[0177] As an example, by designing different levels of first notification, different levels of terminal signal quality and / or strength can be reflected. For example, for received signal quality and / or received signal strength, there can be three levels (levels) of notification: low, medium, and high. Each level corresponds to a different threshold value (e.g., SNR threshold). For different levels of notification, the frequency and number of times the first notification is sent also vary.

[0178] As an example, the signal quality can be indicated by parameters such as SNR, signal to interference plus noise ratio (SINR), channel quality indicator (CQI), narrowband reference signal received quality (NRSRQ), reference signal received quality (RSRQ), IoT cell-specific reference signal (CRS) energy (Es / Iot), IoT shared channel (SCH) energy (Es / Iot), etc., which are not limited here.

[0179] As an example, the signal strength can be indicated by parameters such as path loss, coupling loss, RSRP, narrowband reference signal received power (NRSRP), and shared channel received power (SCH RP), which are not limited here.

[0180] As an example, by designing notifications of different levels, the level corresponding to the first notification can reflect the importance of the event related to the first notification.

[0181] As an example, each IP data packet may trigger the first notification or the first notification may be triggered after several IP data packets to provide a prompt.

[0182] Optionally, when multiple notification levels are designed, the first notification level corresponding to the first notification is any notification level among the multiple notification levels. Relevant sending parameters of the first notification can be determined according to the first notification level.

[0183] Optionally, the sending parameters of the first notification can also be determined based on the number of first cycles included in the first time period. The first cycle can be the DRX cycle or eDRX cycle mentioned above. A terminal device in an RRC idle state or an RRC inactive state can monitor paging / first notifications in each DRX cycle. In other words, the terminal device monitors one paging opportunity in each DRX cycle.

[0184] Optionally, the transmission parameters of the first notification may also be determined based on a first quality parameter of a signal sent by the first communications device at the first moment. That is, the quality or strength of the signal received by the second communications device at the first moment may be referred to as the first quality parameter. The second communications device may predict or estimate the quality parameter of the signal at any moment after the first moment based on the first quality parameter.

[0185] As an example, the first moment may be the current moment, or any moment before the current moment.

[0186] In step S720, the first communication device issues an alarm based on the first notification. Thus, the first notification is used to issue an alarm to the first communication device. Therefore, the first notification can also be referred to as an alarm signal, a dedicated notification, an alarm signal, or a paging warning notification.

[0187] In some embodiments, the first notification may be a warning to provide a prompt, or the first communication device may alert the user based on the first notification. For example, when a mobile terminal device receives the first notification, it may prompt the user or autonomously move to a better SNR area to ensure service continuity.

[0188] The first communication device can issue an alarm prompt in various ways. For example, the first communication device can issue an alarm prompt by sound. For example, the first communication device can issue an alarm prompt by vibration. For example, the first communication device can issue an alarm prompt by a pop-up window on a graphical interface.

[0189] As an embodiment, the warning prompt may utilize most media / multimedia messages, or other types of methods.

[0190] In some embodiments, the first communication device may select an appropriate alert method to provide an alert prompt to better remind the user of missed pages or pages that need to be received. Exemplarily, the alert prompt method may be determined based on at least one of the communication scenario of the first communication device, user settings, and the first notification level corresponding to the first notification.

[0191] In some embodiments, the first communication device issues an alert in a first manner. As an example, the first manner is determined based on a communication scenario of the first communication device. The communication scenario may be a scenario such as communication on a high-speed train where paging may not be successfully received.

[0192] As an embodiment, the first method can be selected based on the specific scenario and user needs. For example, the first communication device can configure a user settings window. The user can set corresponding alarm prompt methods for different scenarios. For example, the first communication device can determine the first method based on the message notification method set by the user.

[0193] In some embodiments, the first communication device may use an artificial intelligence (AI)-based component to perform an alarm prompt. Exemplarily, the first communication device may perform an alarm prompt through intelligent processing / analysis, machine learning, and other methods. Exemplarily, the first communication device may combine the attributes related to IoT service delivery in the automatic determination to determine when and / or where to issue an alarm prompt, as well as the specific method of the alarm prompt based on AI. Exemplarily, AI can also be used to determine whether the first method is sound, vibration, or pop-up window.

[0194] It should be noted that the communication devices in the embodiments of the present application can all adopt various AI-based solutions to execute various aspects of the method embodiments. For example, AI can be used in the process of a communication device determining where and / or when to broadcast a first notification / alarm prompt. For another example, an automatic classifier system implemented by an artificial intelligence component can be used by a communication device to determine at least one of the target device, device category, priority for delivering the first notification / alarm prompt, and waiting time attribute for the first notification / alarm prompt. The application of AI in the embodiments of the present application will be specifically described later in conjunction with an embodiment in which a second communication device determines a second quality parameter.

[0195] The above, combined with FIG7 , describes an embodiment of a method in which a first communication device issues an alert to a user based on a first notification. For a first communication device that has lost a paging call, the alert can prevent it from missing important information. For a first communication device that may be unable to successfully receive a paging call, the alert can improve its reachability, thereby increasing communication efficiency.

[0196] To determine in advance which paging calls the first communication device may not successfully receive, the second communication device can predict the subsequent state based on the current state of the first communication device. In other words, if the first communication device does not adjust its current state, the second communication device can estimate or predict whether the first communication device is likely to miss paging calls in a subsequent time period.

[0197] In some embodiments, the first quality parameter is used by the second communication device to predict a second quality parameter based on artificial intelligence, where the second quality parameter is a quality parameter of a signal sent by the first communication device at any time after the first time.

[0198] Alternatively, artificial intelligence-based prediction may refer to prediction by an AI component. The AI ​​component may utilize various AI methods or machine learning methods. For example, AI technology may generally apply advanced mathematical algorithms to data sets. Advanced mathematical algorithms include decision trees, neural networks, regression analysis, principal component analysis (PCA) for feature and pattern extraction, cluster analysis, genetic algorithms, or reinforcement learning. The communication device may automatically learn and perform multiple functions.

[0199] As an example, the AI ​​component can use one or more of the above methods to learn the data and then draw inferences from the constructed model. For example, a hidden Markov model (HMM) and a related prototype dependency model can be used to determine the second quality parameter. For another example, a general probabilistic graphical model can be used for prediction. Probabilistic graphical models such as Dempster-Shafer networks, Bayesian networks, and other networks created through structural search.

[0200] As an example, the second communications device may continue to predict the second quality parameter using the Bayesian model score or approximation.

[0201] Optionally, the AI ​​component in the embodiments of the present application may also use a linear classifier, a nonlinear classifier, or a fuzzy logic method. A linear classifier is, for example, a support vector machine (SVM). A nonlinear classifier is, for example, a method known as a "neural network."

[0202] In some embodiments, the second communication device may also employ advanced AI and mathematical techniques to analyze the efficiency of each data link (physical and virtual) to determine the proportion of data to be sent through each link, thereby maximizing (or improving) data transmission efficiency.

[0203] In some embodiments, the second communication device may also directly determine the second quality parameter based on the first quality parameter. For example, assuming the first moment is moment k, the first communication device will enter the RRC idle state at moment k+n (n>0). The second communication device may predict the SNR of the first communication device during DRX when entering the RRC idle state based on network coverage, types of different services, and / or the SNR of the signal of the first communication device at moments k-1 and k.

[0204] For example, at time k, the base station may store the SNR of the terminal signal received at time k-1 via a register. The base station may then estimate, predict, or determine based on artificial intelligence the SNR of the terminal signal received at time k+n.

[0205] For example, the first communication device may be terminal device i among M terminal devices, where M is a positive integer and i is a natural number from 0 to M-1. i (k), the quality parameter SNR of the signal sent by terminal device i at time k+n i (k+n) is: SNR i (k+n)=SNR i (k)+n*[SNR i (k)-SNR i (k-1)];

[0206] Among them, SNR i (k-1) represents the quality parameter of the signal sent by terminal device i at time k-1, k>1.

[0207] As mentioned above, the first notification level can be determined based on the signal quality. Therefore, the second quality parameter can be used to determine the notification level corresponding to the first notification. The first notification level is the notification level corresponding to the first notification.

[0208] In some embodiments, the first notification level is one of multiple notification levels. Multiple notification levels can be determined based on multiple thresholds of varying sizes. When one threshold is set, there can be two notification levels. When S thresholds are set, there can be S+1 notification levels.

[0209] As an example, the first notification level may be determined based on the second quality parameter and a plurality of thresholds. The second quality parameter may be used to select the first notification level from a plurality of notification levels.

[0210] As an example, the multiple thresholds include a first threshold and a second threshold associated with the second quality parameter, where the first threshold is smaller than the second threshold. It should be understood that the threshold being associated with the second quality parameter may include the parameter type of the threshold being the same as the parameter type of the quality parameter, and / or the magnitude of the threshold being determined based on the second quality parameter.

[0211] When the first notification is repeatedly sent, the second quality parameter and the plurality of thresholds are used to determine the number of repetitions of the first notification. For example, the second quality parameter, the first threshold, and the second threshold are used to determine the number of repetitions of the first notification.

[0212] Optionally, the first notification may be sent within each DRX cycle. For example, the first notification may be sent within X time slots or X time slots after a paging opportunity within each DRX cycle. If the first communications device is still unable to connect to the network after sending one or more first notifications, the network may deem the first communications device to be in an unreachable state even if the estimated unreachable time has not yet arrived.

[0213] Optionally, the first notification may be sent every two DRX cycles or every multiple DRX cycles. For example, the first notification may be sent X time slots after the last paging opportunity of every two DRX cycles. If the first communication device is still unable to connect to the network after sending the first notification, the network may deem the first communication device to be in an unreachable state even if the estimated unreachable time has not yet arrived.

[0214] Optionally, the first notification may be sent only once within the first time period. For example, the second communications device may initiate the first notification only during the first DRX cycle. In another example, the second communications device may send the first notification only after the last paging in the first time period. In other words, the first communications device is warned once, alerting the first communications device of the paging request and the need to establish a connection with the network as soon as possible.

[0215] As an example, the first time period includes Q first cycles, Q is a positive integer greater than 1, and the number of repetitions N of the first notification is: when the second quality parameter is less than or equal to the first threshold, N is equal to Q or Q-1; when the second quality parameter is greater than the first threshold and less than or equal to the second threshold, N is greater than 1 and less than Q; when the first quality parameter is greater than the second threshold, N is equal to 1.

[0216] For example, SNR target1 is the first threshold, SNR target2 When is the second threshold, N is as follows:

[0217] SNR i (k+n)≤SNR target1, the second communication device initiates the first notification in each DRX cycle. The sending period of the first notification is close to the DRX cycle. When there is time to send the first notification after the last DRX cycle, N=Q; if there is no time, N=Q-1;

[0218] SNR target1 <SNR i (k+n)≤SNR target2 The second communication device initiates a first notification every two or more DRX cycles. The sending period of the first notification is close to two times or more times the DRX cycle;

[0219] SNR i (k+n)>SNR target2 , the second communication device sends the first notification only once within the first time period.

[0220] For ease of understanding, the following exemplary description is provided in conjunction with Figures 8 to 10. In Figure 8, the second quality parameter is less than the first threshold, in Figure 9, the second quality parameter is greater than the first threshold and less than the second threshold, and in Figure 10, the second quality parameter is greater than the second threshold.

[0221] Referring to Figure 8 , the first time period is the idle state period. The duration of the first time period is the same as the duration of timer T3324. The first time period includes five paging opportunities 801 (Q=5) and four alarm opportunities 802 (N=4). The alarm opportunities are the timings for sending the first notification. The first alarm opportunity 802 is separated from the first paging opportunity 801 by a first offset 810. The interval 820 between the alarm opportunities 802 is the sending period.

[0222] As can be seen from FIG8 , the second communication device sends the first notification after adding the first offset (offset1) 810 to the first paging time.

[0223] 9 includes 5 paging opportunities 901 (Q=5) and 2 alerting opportunities 902 (N=2). The first offset 910 is greater than the first offset 810. The interval 920 of the alerting opportunities 902 is the transmission cycle, which is approximately twice the DRX cycle.

[0224] The first time period in Figure 10 includes five paging opportunities 1001 (Q=5) and one alerting opportunity 1002 (N=1). The alerting opportunity 1002 is located after the last paging opportunity 1001. The second offset 1020 is determined according to the end time of the first time period.

[0225] Optionally, multiple thresholds used to determine multiple notification levels can be dynamically adjusted to more flexibly send the first notification. In other words, any of the multiple thresholds can be dynamically adjusted. For example, the SNR threshold within different DRX cycles can be dynamically adjusted.

[0226] As an example, if the system sends the first notification in a DRX cycle and the first communication device does not establish a connection with the network, the SNR threshold for the system to send the first notification may be changed in the next DRX cycle.

[0227] As an example, the system may predict the SNR threshold of the next DRX cycle based on the actual measured value at the previous moment.

[0228] As an example, the measured value at the last moment may be an average of measured values ​​within a period of time, where the period of time may be one time slot, several time slots, or one frame or several frames.

[0229] As an example, the first time period includes at least two first periods. The at least two first periods include an adjacent first period and a second period. The multiple thresholds corresponding to the second period can be determined based on the multiple thresholds corresponding to the first period and the first quality parameter. The first quality parameter can be the quality parameter actually measured at the first moment (moment k).

[0230] As an example, the first time period includes the Pth period and the P+1th period, where P is a positive integer. Any threshold value among the multiple threshold values ​​in the P+1th period can be determined based on the corresponding threshold value in the Pth period. Assume that the multiple threshold values ​​include any threshold SNR v , any threshold SNR corresponding to the P+1th cycle v (P+1) is: SNR v (P+1)=β*SNR(k)+(1-β)*SNR v (P);

[0231] Among them, SNR v (P) represents any threshold corresponding to the P-th period, SNR(k) represents the first quality parameter of the signal sent by the first communication device at time k, β represents the weight coefficient, and 0<β<1.

[0232] As can be seen, the new threshold is a weighted average of the real-time SNR and the threshold of the previous cycle. Based on this automatic adjustment mechanism, the system can automatically adjust the sensitivity and level of alarms based on the current network conditions, helping to provide a better user experience under different network conditions.

[0233] The above describes an embodiment of a method for a first communication device to issue an alert based on a first notification from a second communication device. To facilitate understanding, this embodiment of the method is described below using a scenario where the first communication device is located in discontinuous NTN coverage. Specifically, the second communication device includes a satellite in the NTN, and the first communication device communicates with a base station via this satellite.

[0234] The first communication device may determine whether the cell in which it is located supports discontinuous coverage through broadcast information. For example, SIB32 in the system information block may indicate that the cell supports discontinuous coverage.

[0235] In some embodiments, the first communications device may determine first time information related to discontinuous coverage. The first time information may include the relevant time information described above.

[0236] The first time information refers to time parameters related to a scenario where the terminal device is in discontinuous network coverage. In some embodiments, the first time information refers to time parameters related to when the terminal device enters a scenario without network coverage from a scenario with network coverage. In some embodiments, the first time information refers to time parameters related to when the terminal device enters a scenario with network coverage from a scenario without network coverage. The first time information may include the time t1 when the first communication device enters the unreachable state and the unreachable duration T.

[0237] As an example, a terminal device entering a scenario without network coverage can also mean that the terminal device is in a scenario with discontinuous network coverage. Discontinuous network coverage can also be referred to as discontinuous cell coverage. That is, the terminal device may be within the coverage of a cell at certain times, but may not be within the coverage of any cell at other times.

[0238] In some embodiments, SIB32 or other system information blocks may also provide necessary information for discontinuous coverage prediction, such as ephemeris and beam information, which means that the first communication device can predict how long it will stay within the coverage of the current satellite.

[0239] As an example, in the case of discontinuous coverage in an IoT NTN, a first communications device can determine based on prediction results that it will soon enter discontinuous coverage. For example, if the elevation angle changes by less than 5 degrees, or if the first communications device's reference position to the cell edge is less than a certain set value, discontinuous coverage will soon be entered. For another example, if the first communications device does not perform any UL / DL data transmission before the expected coverage gap, it can also be considered that a coverage gap with no network coverage is imminent.

[0240] As an example, in a mobile cell, a first communications device can predict the cell service duration based on a broadcast reference location. The first communications device can indicate its instructions to leave RRC_CONNECTED, so that the network also determines that it is time to release the first communications device. It should be noted that if the network requires, a release timer can be configured to prevent the first communications device from autonomously entering the idle state.

[0241] As an embodiment, since the first communication device can know its own location information and satellite position, it can roughly know when it will enter discontinuous coverage. In other words, the first time information is determined based on the first distance between the satellite's projected position on the ground and the position of the first communication device.

[0242] The projected position of the satellite on the ground can be determined by converting the satellite's geocentric coordinates. The satellite's geocentric coordinates are usually expressed as three values ​​in a rectangular coordinate system, namely x', y', and z'. By considering the Earth's rotational angular velocity W earth , the geocentric coordinates (x′, y′, z′) can be converted to earth-fixed coordinates (x, y, z) according to the following formula: x=x′cos(W earth (t))-y′sin(W earth (t)); y=y′sin(W earth (t))+y′cos(W earth (t)); z=z′;

[0243] Where t is time. x' represents the satellite's distance relative to the Earth's center along the X-axis. y' represents the satellite's distance relative to the Earth's center along the Y-axis. z' represents the satellite's distance relative to the Earth's center along the Z-axis. The Z-axis is usually aligned with the Earth's rotational axis and is therefore unaffected by the Earth's rotation.

[0244] The first distance can be used to determine whether the location of the terminal device is within the coverage radius R of the satellite. For each location, the satellite distance (first distance d) of the location is calculated in the earth-fixed coordinate system. If the distance d is less than R, the point is within the serving cell. For terminal device i, the first distance in the corresponding earth-fixed coordinate system can be used to confirm whether it is within the communication coverage radius. Wherein, d is:

[0245] Where d is the first distance from the satellite to the terminal device i. (x i ,y i , z i ) is the location coordinate of terminal device i. In some scenarios, the influence of the z coordinate caused by the ground height can be ignored, so z and z i All are zero.

[0246] Optionally, if d≤R, then the terminal device i is in the serving cell. Optionally, if d is less than a third threshold, then the terminal device i is in the serving cell. The third threshold represents the minimum requirement for communication coverage.

[0247] In some embodiments, before entering a scenario without network coverage, the first communications device may determine, based on the first assistance information, whether to switch from a serving cell corresponding to the satellite to a serving cell of the terrestrial network. As an example, for an NB-IOT terminal device, it is necessary to determine in the RRC idle state whether to enter the PSM state or perform cell reselection to connect to the TN serving cell.

[0248] As an embodiment, regardless of the service state of the first communication device, cell reselection can be performed before t1 arrives. For example, a timer is triggered at time t1-α, the RRC state enters the RRC idle state from the connected state, and the first communication device starts TN reselection.

[0249] The first auxiliary information includes discontinuous coverage information, the time required for the next satellite to provide coverage, and information related to adjacent cells or TN cells, so that the first communication device can determine whether it has entered a TN area. Furthermore, the first communication device can determine whether to switch from an NTN cell to a TN cell based on the current communication status, whether continued communication is required, and the first auxiliary information.

[0250] As an example, in NTN, the satellite orbit is fixed. When the first communication device is in discontinuous coverage, the current serving cell may know the target cell of the first communication device, and thus may provide the first communication device with some auxiliary information of the target cell in advance.

[0251] The first assistance information can be used by the first communications device to quickly locate the target cell for cell selection / reselection, thereby reducing power consumption. In an NTN, the first communications device must reacquire the SIB31 and perform GNSS measurements before establishing a connection. This process can take from a few seconds to tens of seconds, depending on the GNSS status (cold start, hot start). Due to the long round-trip time, the connection establishment process is also prolonged.

[0252] For example, for an IoT NTN, when first assistance information is configured, a first communications device can perform cell reselection or cell search to access the IoT NTN when outside of discontinuous coverage. However, the first communications device may not have target cell information to assist it in performing cell reselection / selection because the neighboring cell information acquired before the first communications device entered discontinuous coverage is unavailable upon leaving the discontinuous coverage. In this scenario, when the first communications device performs cell reselection / selection, it will incur increased power consumption and access delays.

[0253] In some embodiments, when the first communication device enters a scenario without network coverage, the first time period described above includes a period without network coverage. When the first communication device receives the first notification after leaving the scenario without network coverage, the one or more pages include pages related to the first communication device that are cached by the second communication device, so that the first communication device is aware of the one or more missed pages.

[0254] For example, after the first communication device predicts the first time information, it reports it to the NTN network. After receiving the notification from the first communication device, the base station may cache or transfer any information received from the core network within a time period T. The core network information may include paging information. Furthermore, after receiving the notification from the first communication device, the core network may also cache the paging information of the first communication device.

[0255] For example, for a terminal device at a fixed location, if the first communication device predicts the first time information, it can report it to a base station in the NTN. After receiving the notification from the terminal device, the base station can cache information related to the terminal device from the core network, such as paging information of the terminal device, for a period of time T.

[0256] For example, for a mobile terminal device, both the core network and the base station can cache the terminal device's lost paging information. The PLMN network to which the terminal device reconnects after a timeout period T may be different from the previous one. Therefore, when the terminal device establishes a new PLMN network, the core network can send the cached paging information to the newly connected base station, which then notifies the terminal device. Alternatively, the core network can notify the base station that originally cached the terminal device's lost paging information, which then sends the cached information to the new base station.

[0257] As an example, when the location of the first communication device does not change, the second communication device directly sends the cached paging related to the first communication device to the first communication device after the first time period.

[0258] As an example, when the location of a first communication device changes, the second communication device sends a cached page related to the first communication device to a third communication device after a first time period, so that the third communication device notifies the first communication device. The third communication device may be a new network device, such as a new base station, to which the first communication device establishes a connection after the first time period.

[0259] 7 to 10, an embodiment of a method for a first communication device to issue an alarm prompt based on a first notification sent by a second communication device is described above. To ensure the sending of the first notification, the second communication device needs to configure the sending parameters of the first notification.

[0260] Optionally, the second communication device may determine configuration information of a transmit antenna used to send the first notification and a first notification level corresponding to the first notification. Further, the second communication device may determine a number of repetitions of the first notification based on the configuration information and the first notification level.

[0261] As an example, the transmit antenna configuration selected by the second communication device includes the number of transmit antennas used to transmit the first notification. Furthermore, the second communication device may use multiple transmit antennas to send the alert signal. For example, for an IoT terminal device, the second communication device may determine the number of times the first notification is repeated based on the transmit antenna configuration and the notification level, taking into account the DRX or eDRX cycle length.

[0262] Optionally, after receiving the first notification, the first communication device may decode the relevant transmission parameters of the first notification through a decoding unit. Exemplarily, the decoding unit may be configured to decode information such as configuration information of a transmit antenna used to send the first notification, a first notification level corresponding to the first notification, and a number of repetitions of the first notification.

[0263] As an example, the decoding unit corresponding to the first notification is configured to at least one of: determine configuration information regarding a transmit antenna of the second communication device; determine information regarding an activity level of the first communication device; and determine a number of repetitions of the first notification based on the transmit antenna configuration and the activity level. Furthermore, the first communication device may receive the first notification, the first notification including at least the determined number of repetitions.

[0264] The method embodiment of the present application is described in detail above in conjunction with Figures 1 to 10. The device embodiment of the present application is described in detail below in conjunction with Figures 11 to 13. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment. Therefore, for portions not described in detail, reference can be made to the above method embodiment.

[0265] FIG11 is a schematic block diagram of an apparatus for wireless communication according to an embodiment of the present application. The apparatus 1100 may be any of the first communication devices described above. The apparatus 1100 shown in FIG11 includes a receiving unit 1110 and an executing unit 1120.

[0266] The receiving unit 1110 may be configured to receive a first notification sent by a second communication device.

[0267] The execution unit 1120 can be used to issue an alarm prompt based on the first notification; wherein, the first notification is used to indicate one or more pagings within a first time period, and the one or more pagings include pagings that the first communication device has not successfully received and / or pagings that the first communication device cannot successfully receive in the current state.

[0268] Optionally, the first notification also includes one or more of the following information: a message ID corresponding to the first notification; the number of one or more pagings; the initiating nodes of some or all of the one or more pagings; and relevant information of events corresponding to one or more pagings.

[0269] Optionally, the first paging within the first time period is the first paging, and the first notification includes a first sequence, which is generated and / or encrypted according to at least one of the following parameters: physical cell ID; TMSI of the first communication device; index number of the starting time domain position of the sending timing of the first notification; index number of the synchronization signal block associated with the first notification; index number of the time domain position associated with the first PDCCH corresponding to the first paging.

[0270] Optionally, the first notification is carried in one or more of the following: a short message, a dedicated channel, and a system information block.

[0271] Optionally, the manner of the alarm prompt is determined according to at least one of a communication scenario of the first communication device, a user setting, and a first notification level corresponding to the first notification.

[0272] Optionally, the sending parameters of the first notification are determined based on one or more of the following parameters: the first paging opportunity and the first offset within the first time period; the end time and the second offset of the first time period; the first notification level corresponding to the first notification; the number of first cycles included in the first time period; and the first quality parameter of the signal sent by the first communication device at the first moment.

[0273] Optionally, the first offset or the second offset is determined by a service type and / or a first notification level of the first communication device.

[0274] Optionally, the first quality parameter is used by the second communication device to predict a second quality parameter based on artificial intelligence, where the second quality parameter is a quality parameter of a signal sent by the first communication device at any time after the first time.

[0275] Optionally, the first communication device is a terminal device i among M terminal devices, M is a positive integer, i is a natural number from 0 to M-1, the first moment is moment k, and when the first quality parameter is SNR i (k), the quality parameter SNR of the signal sent by terminal device i at time k+n i (k+n) is: SNR i (k+n)=SNR i (k)+n*[SNR i (k)-SNR i (k-1)];

[0276] Among them, SNR i(k-1) represents the quality parameter of the signal sent by terminal device i at time k-1, k>1, n>0.

[0277] Optionally, the first quality parameter is used to determine the second quality parameter, and the first notification level is determined according to the second quality parameter and multiple thresholds, the multiple thresholds including a first threshold and a second threshold related to the second quality parameter, and the first threshold is smaller than the second threshold.

[0278] Optionally, the first notification is sent repeatedly, and the second quality parameter and multiple thresholds are used to determine the number of repetitions of the first notification.

[0279] Optionally, the first time period includes Q first cycles, Q is a positive integer greater than 1, and the number of repetitions N of the first notification is: when the second quality parameter is less than or equal to the first threshold, N is equal to Q or Q-1; when the second quality parameter is greater than the first threshold and less than or equal to the second threshold, N is greater than 1 and less than Q; when the second quality parameter is greater than the second threshold, N is equal to 1.

[0280] Optionally, the first time period includes at least two first cycles, the at least two first cycles include an adjacent first cycle and a second cycle, and the multiple thresholds corresponding to the second cycle are determined according to the multiple thresholds corresponding to the first cycle and the first quality parameter.

[0281] Optionally, the first time period includes the Pth period and the P+1th period, P is a positive integer, and the multiple thresholds include any threshold SNR v , any threshold SNR corresponding to the P+1th cycle v (P+1) is: SNR v (P+1)=β*SNR(k)+(1-β)*SNR v (P);

[0282] Among them, SNR v (P) represents any threshold corresponding to the P-th period, SNR(k) represents the first quality parameter, β represents the weight coefficient, and 0<β<1.

[0283] Optionally, the second communication device includes a satellite in the NTN, and the apparatus 1100 further includes a first determination unit, which can be used to determine first time information related to discontinuous coverage; and a second determination unit, which can be used to determine whether to switch from the service cell corresponding to the satellite to the service cell of the terrestrial network based on the first auxiliary information before entering a scenario without network coverage.

[0284] Optionally, the first time information is determined according to a first distance between a projection position of the satellite on the ground and a position of the first communication device.

[0285] Optionally, when the first communication device receives the first notification after leaving a scenario without network coverage, the first time period includes a time period without network coverage, and the one or more pages include pages related to the first communication device cached by the second communication device.

[0286] Optionally, the apparatus 1100 further includes a decoding unit, which is configured to decode configuration information of a transmitting antenna used to send the first notification; decode a first notification level corresponding to the first notification; and decode the number of repetitions of the first notification.

[0287] FIG12 is a schematic block diagram of another apparatus for wireless communication according to an embodiment of the present application. The apparatus 1200 may be any of the second communication devices described above. The apparatus 1200 shown in FIG12 includes a sending unit 1210.

[0288] Sending unit 1210 can be used to send a first notification to the first communication device; wherein the first notification is used to provide an alarm prompt to the first communication device, and the first notification is also used to indicate one or more pagings within a first time period, and the one or more pagings include pagings that the first communication device has not successfully received and / or pagings that the first communication device cannot successfully receive in the current state.

[0289] Optionally, the first notification also includes one or more of the following information: a message ID corresponding to the first notification; the number of one or more pagings; the initiating nodes of some or all of the one or more pagings; and relevant information of events corresponding to one or more pagings.

[0290] Optionally, the first paging within the first time period is the first paging, and the first notification includes a first sequence, which is generated and / or encrypted according to at least one of the following parameters: physical cell ID; TMSI of the first communication device; index number of the starting time domain position of the sending timing of the first notification; index number of the synchronization signal block associated with the first notification; index number of the time domain position associated with the first PDCCH corresponding to the first paging.

[0291] Optionally, the first notification is further used to indicate the initiating node of some or all of the one or more pagings.

[0292] Optionally, the first notification is carried in one or more of the following: a short message, a dedicated channel, and a system information block.

[0293] Optionally, the manner of the alarm prompt is determined according to at least one of a communication scenario of the first communication device, a user setting, and a first notification level corresponding to the first notification.

[0294] Optionally, the sending parameters of the first notification are determined based on one or more of the following parameters: the first paging opportunity and the first offset within the first time period; the end time and the second offset of the first time period; the first notification level corresponding to the first notification; the number of first cycles included in the first time period; and the first quality parameter of the signal sent by the first communication device at the first moment.

[0295] Optionally, the first offset or the second offset is determined by a service type and / or a first notification level of the first communication device.

[0296] Optionally, the apparatus 1200 further includes a prediction unit, configured to predict a second quality parameter based on the first quality parameter based on artificial intelligence, wherein the second quality parameter is a quality parameter of a signal sent by the first communication device at any time after the first time.

[0297] Optionally, the first communication device is a terminal device i among M terminal devices, M is a positive integer, i is a natural number from 0 to M-1, the first moment is moment k, and when the first quality parameter is SNR i (k), the quality parameter SNR of the signal sent by terminal device i at time k+n i (k+n) is: SNR i (k+n)=SNR i (k)+n*[SNR i (k)-SNR i (k-1)];

[0298] Among them, SNR i (k-1) represents the quality parameter of the signal sent by terminal device i at time k-1, k>1, n>0.

[0299] Optionally, the first quality parameter is used to determine the second quality parameter, and the first notification level is determined according to the second quality parameter and multiple thresholds, the multiple thresholds including a first threshold and a second threshold related to the second quality parameter, and the first threshold is smaller than the second threshold.

[0300] Optionally, the first notification is sent repeatedly, and the second quality parameter and multiple thresholds are used to determine the number of repetitions of the first notification.

[0301] Optionally, the first time period includes Q first cycles, Q is a positive integer greater than 1, and the number of repetitions N of the first notification is: when the second quality parameter is less than or equal to the first threshold, N is equal to Q or Q-1; when the second quality parameter is greater than the first threshold and less than or equal to the second threshold, N is greater than 1 and less than Q; when the second quality parameter is greater than the second threshold, N is equal to 1.

[0302] Optionally, the first time period includes at least two first cycles, the at least two first cycles include an adjacent first cycle and a second cycle, and the multiple thresholds corresponding to the second cycle are determined according to the multiple thresholds corresponding to the first cycle and the first quality parameter.

[0303] Optionally, the first time period includes the Pth period and the P+1th period, P is a positive integer, and the multiple thresholds include any threshold SNR v , any threshold SNR corresponding to the P+1th cycle v (P+1) is: SNR v (P+1)=β*SNR(k)+(1-β)*SNR v (P);

[0304] Among them, SNR v (P) represents any threshold corresponding to the P-th period, SNR(k) represents the first quality parameter, β represents the weight coefficient, and 0<β<1.

[0305] Optionally, the second communication device includes a satellite in the NTN, and the sending unit is further used to send first auxiliary information to the first communication device; wherein, the first auxiliary information is used by the first communication device to determine whether to switch from the service cell corresponding to the satellite to the service cell of the ground network before entering a scenario without network coverage, and whether the first communication device enters a scenario without network coverage is determined based on first time information related to discontinuous coverage.

[0306] Optionally, the first time information is determined according to a first distance between a projection position of the satellite on the ground and a position of the first communication device.

[0307] Optionally, when the first communication device receives the first notification after leaving a scenario without network coverage, the first time period includes a time period without network coverage, and the one or more pages include pages related to the first communication device cached by the second communication device.

[0308] Optionally, the device 1300 also includes a determination unit, which can be used to determine the configuration information of the transmitting antenna used to send the first notification; determine the first notification level corresponding to the first notification; and determine the number of repetitions of the first notification based on the configuration information and the first notification level.

[0309] FIG13 is a schematic diagram of the structure of a communication device according to an embodiment of the present application. The dashed lines in FIG13 indicate that the unit or module is optional. Apparatus 1300 may be used to implement the method described in the above method embodiment. Apparatus 1300 may be a chip, a terminal device, or a network device.

[0310] The device 1300 may include one or more processors 1310. The processor 1310 may support the device 1300 to implement the method described in the above method embodiment. The processor 1310 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0311] The apparatus 1300 may further include one or more memories 1320. The memories 1320 store programs that can be executed by the processor 1310, causing the processor 1310 to perform the methods described in the above method embodiments. The memories 1320 may be independent of the processor 1310 or integrated into the processor 1310.

[0312] The apparatus 1300 may further include a transceiver 1330. The processor 1310 may communicate with other devices or chips via the transceiver 1330. For example, the processor 1310 may transmit and receive data with other devices or chips via the transceiver 1330.

[0313] The present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to a terminal device or network device provided in the present application, and the program causes a computer to execute the method performed by the first communication device or the second communication device in each embodiment of the present application.

[0314] The computer-readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, or a magnetic tape), an optical medium (e.g., a digital versatile disc (DVD)), or a semiconductor medium (e.g., a solid state drive (SSD)).

[0315] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a terminal device or network device provided in the present application, and the program causes a computer to execute the method performed by the first communication device or the second communication device in each embodiment of the present application.

[0316] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, a computer, a server or a data center via a wired

[0317] The data is transmitted to another website, computer, server or data center by means of (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.).

[0318] The present application also provides a computer program that can be applied to the terminal device or network device provided in the present application, and enables a computer to execute the method performed by each communication device in each embodiment of the present application.

[0319] The terms "system" and "network" in this application may be used interchangeably. In addition, the terms used in this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The terms "first," "second," "third," and "fourth" in the specification and claims of this application and the accompanying drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

[0320] In the embodiments of this application, the term "indication" may refer to a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" may refer to a direct indication of B, e.g., B can obtain information through A; it may refer to an indirect indication of B, e.g., A indicates C, e.g., B can obtain information through C; or it may refer to an association between A and B.

[0321] In the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and indication, configuration and configuration, etc.

[0322] In the embodiments of the present application, "pre-definition" or "pre-configuration" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., including a terminal device and a network device). The present application does not limit the specific implementation method. For example, pre-definition may refer to a definition in a protocol.

[0323] In the embodiments of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and this application does not limit this.

[0324] In the embodiments of the present application, determining B based on A does not mean determining B only based on A. B can also be determined based on A and / or other information.

[0325] In the embodiments of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0326] In the embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0327] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0328] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0329] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0330] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A method for wireless communication, characterized in that, including: The first communication device receives a first notification sent by the second communication device; The first communication device performs an alarm prompt according to the first notification; Wherein, the first notification is used to indicate one or more paging during a first time period, and the one or more paging include the paging that the first communication device fails to receive successfully and / or the paging that the first communication device cannot receive successfully in the current state.

2. The method according to claim 1, wherein The first notification further includes one or more of the following information: The message identification ID corresponding to the first notification; The number of the one or more paging; The originating node of some or all of the one or more paging; The relevant information of the event corresponding to the one or more paging.

3. The method according to claim 1 or 2, characterized in that, The first paging during the first time period is the first paging, the first notification includes a first sequence, and the first sequence is generated and / or scrambled according to at least one of the following parameters: Physical cell ID; The temporary mobile subscriber identity TMSI of the first communication device; The index number of the starting time domain position of the sending opportunity of the first notification; The index number of the synchronization signal block associated with the first notification; The index number of the time domain position associated with the first physical downlink control channel PDCCH corresponding to the first paging.

4. The method according to any one of claims 1 to 3, characterized in that, The first notification is carried in one or more of the following: short message, dedicated channel, and system information block.

5. The method according to any one of claims 1-4, characterized in that, The manner of the alarm prompt is determined according to at least one of the communication scenario of the first communication device, user settings, and the first notification level corresponding to the first notification.

6. The method according to any one of claims 1-5, characterized in that, The sending parameters of the first notification are determined according to one or more of the following: The first paging opportunity and the first offset during the first time period; The end time of the first time period and the second offset; The first notification level corresponding to the first notification; The number of the first cycles included in the first time period; The first quality parameter of the signal sent by the first communication device at the first moment.

7. The method according to claim 6, wherein The first offset or the second offset is determined according to the service type of the first communication device and / or the first notification level.

8. The method according to claim 6 or 7, characterized in that, The first quality parameter is used for the second communication device to predict a second quality parameter based on artificial intelligence, and the second quality parameter is the quality parameter of the signal sent by the first communication device at any moment after the first moment.

9. The method according to any one of claims 6 - 8, characterized in that, The first communication device is the terminal device i among M terminal devices, where M is a positive integer and i is a natural number from 0 to M - 1. The first moment is moment k. When the first quality parameter is SNR i (k), the quality parameter SNR i (k + n) of the signal transmitted by the terminal device i at moment k + n is: SNR i (k + n)=SNR i (k)+n*[SNR i (k)-SNR i (k - 1)]; Among them, SNR i (k - 1) represents the quality parameter of the signal transmitted by the terminal device i at time k - 1, where k > 1 and n > 0.

10. The method according to any one of claims 6-9, characterized in that, The first quality parameter is used to determine the second quality parameter, and the first notification level is determined according to the second quality parameter and multiple thresholds, and the multiple thresholds include a first threshold and a second threshold related to the second quality parameter, and the first threshold is less than the second threshold.

11. The method according to claim 10, wherein The sending of the first notification is repeated sending, and the second quality parameter and the multiple thresholds are used to determine the repetition times of the first notification.

12. The method according to claim 11, wherein The first time period includes Q first cycles, Q is a positive integer greater than 1, and the repetition times N of the first notification are: When the second quality parameter is less than or equal to the first threshold, N is equal to Q or Q - 1; When the second quality parameter is greater than the first threshold and less than or equal to the second threshold, N is greater than 1 and less than Q; When the second quality parameter is greater than the second threshold, N is equal to 1.

13. The method according to any one of claims 6-12, characterized in that, The first time period includes at least two first cycles, the at least two first cycles include an adjacent first cycle and a second cycle, and a plurality of thresholds corresponding to the second cycle are determined according to a plurality of thresholds corresponding to the first cycle and the first quality parameter.

14. The method according to claim 13, wherein The first time period includes the P-th cycle and the (P + 1)-th cycle, where P is a positive integer, and the multiple thresholds include any threshold SNR v , and the any threshold SNR corresponding to the (P + 1)-th cycle v (P + 1) is: SNR v (P + 1) = β * SNR(k) + (1 - β) * SNR v (P); wherein, SNR v (P) represents any one of the thresholds corresponding to the P-th period, SNR(k) represents the first quality parameter, and β represents a weight coefficient, where 0 < β < 1.

15. The method according to any one of claims 1-14, characterized in that, The second communication device includes a satellite in a non-terrestrial network (NTN), and the method further includes: The first communication device determines first time information related to discontinuous coverage; Before entering a network coverage loss scenario, the first communication device determines whether to switch from a serving cell corresponding to the satellite to a serving cell of a terrestrial network according to first auxiliary information.

16. The method according to claim 15, characterized in that, The first time information is determined according to a first distance between a projection position of the satellite on the ground and a position of the first communication device.

17. The method according to claim 15 or 16, characterized in that, When the first communication device receives the first notification after leaving the network coverage loss scenario, the first time period includes the time period of network coverage loss, and the one or more paging messages include paging messages related to the first communication device cached by the second communication device.

18. The method according to any one of claims 1-17, characterized in that, The first communication device receives a first notification sent by a second communication device, including: The first communication device decodes configuration information of a transmitting antenna for sending the first notification; The first communication device decodes a first notification level corresponding to the first notification; The first communication device decodes the number of repetitions of the first notification.

19. A method for wireless communication, characterized in that, including: The second communication device sends a first notification to the first communication device; wherein, the first notification is used for the first communication device to perform an alarm prompt, and the first notification is also used to indicate one or more paging messages within a first time period, and the one or more paging messages include paging messages that the first communication device has not successfully received and / or paging messages that the first communication device cannot successfully receive in the current state.

20. The method according to claim 19, wherein The first notification further includes one or more of the following information: A message identification ID corresponding to the first notification; The number of the one or more paging messages; An originating node of some or all of the one or more paging messages; Relevant information of an event corresponding to the one or more paging messages.

21. The method according to claim 19 or 20, characterized in that, The first paging message within the first time period is a first paging message, and the first notification includes a first sequence, and the first sequence is generated and / or scrambled according to at least one of the following parameters: Physical cell ID; The temporary mobile subscriber identity (TMSI) of the first communication device; An index number of a starting time domain position of a sending opportunity of the first notification; An index number of a synchronization signal block associated with the first notification; An index number of a time domain position associated with a first physical downlink control channel (PDCCH) corresponding to the first paging message.

22. The method according to any one of claims 19 - 21, characterized in that, The first notification is carried in one or more of the following: a short message, a dedicated channel, and a system information block.

23. The method according to any one of claims 19-22, characterized in that, The manner of the alarm prompt is determined according to at least one of the communication scenario of the first communication device, user settings, and a first notification level corresponding to the first notification.

24. The method according to any one of claims 19-23, characterized in that, The sending parameters of the first notification are determined according to one or more of the following: The first paging opportunity and a first offset within the first time period; The termination time of the first time period and the second offset; The first notification level corresponding to the first notification; The number of first cycles included in the first time period; The first quality parameter of the signal sent by the first communication device at the first moment.

25. The method according to claim 24, wherein The first offset or the second offset is determined based on the service type of the first communication device and / or the first notification level.

26. The method according to claim 24 or 25, characterized in that, The method further includes: Based on artificial intelligence, the second communication device predicts a second quality parameter according to the first quality parameter, where the second quality parameter is the quality parameter of the signal sent by the first communication device at any moment after the first moment.

27. The method according to any one of claims 24-26, characterized in that, The first communication device is the terminal device i among M terminal devices, where M is a positive integer and i is a natural number from 0 to M - 1. The first moment is moment k. When the first quality parameter is SNR i (k), the quality parameter SNR i (k + n) of the signal sent by the terminal device i at moment k + n is: SNR i (k + n)=SNR i (k)+n*[SNR i (k)-SNR i (k - 1)]; Among them, SNR i (k - 1) represents the quality parameter of the signal transmitted by the terminal device i at time k - 1, where k > 1 and n > 0.

28. The method according to any one of claims 24-27, characterized in that, The first quality parameter is used to determine the second quality parameter, the first notification level is determined according to the second quality parameter and multiple thresholds, the multiple thresholds include a first threshold and a second threshold related to the second quality parameter, and the first threshold is less than the second threshold.

29. The method according to claim 28, wherein The sending of the first notification is a repeated sending, and the second quality parameter and the multiple thresholds are used to determine the repetition times of the first notification.

30. The method according to claim 29, wherein The first time period includes Q first cycles, Q is a positive integer greater than 1, and the repetition times N of the first notification are: When the second quality parameter is less than or equal to the first threshold, N is equal to Q or Q - 1; When the second quality parameter is greater than the first threshold and less than or equal to the second threshold, N is greater than 1 and less than Q; When the second quality parameter is greater than the second threshold, N is equal to 1.

31. The method according to any one of claims 24 - 30, characterized in that, The first time period includes at least two first cycles, the at least two first cycles include an adjacent first cycle and a second cycle, and the multiple thresholds corresponding to the second cycle are determined according to the multiple thresholds corresponding to the first cycle and the first quality parameter.

32. The method according to claim 31, wherein The first time period includes the P-th cycle and the (P + 1)-th cycle, where P is a positive integer, and the multiple thresholds include any threshold SNR v , and the any threshold SNR corresponding to the (P + 1)-th cycle v (P + 1) is: SNR v (P + 1) = β * SNR(k) + (1 - β) * SNR v (P); Among them, SNR v (P) represents any one of the thresholds corresponding to the P-th cycle, SNR(k) represents the first quality parameter, and β represents a weight coefficient, where 0 < β < 1.

33. The method according to any one of claims 19-32, characterized in that, The second communication device includes a satellite in a non-terrestrial network (NTN), and the method further includes: The second communication device sends first auxiliary information to the first communication device; Wherein, the first auxiliary information is used for the first communication device to determine whether to switch from the service cell corresponding to the satellite to the service cell of the terrestrial network before entering the network coverage-free scenario, and whether the first communication device enters the network coverage-free scenario is determined according to the first time information related to discontinuous coverage.

34. The method according to claim 33, wherein The first time information is determined according to the first distance between the projection position of the satellite on the ground and the position of the first communication device.

35. The method according to claim 33 or 34, characterized in that, When the first communication device receives the first notification after leaving the network coverage-free scenario, the first time period includes the time period of network coverage-free, and the one or more paging messages include the paging messages related to the first communication device cached by the second communication device.

36. The method according to any one of claims 19-35, characterized in that, The second communication device sending a first notification to the first communication device includes: The second communication device determines the configuration information of the transmitting antenna for sending the first notification; The second communication device determines the first notification level corresponding to the first notification; The second communication device determines the repetition times of the first notification according to the configuration information and the first notification level.

37. A device for wireless communication, characterized in that, The device is a first communication device, and the device includes: a receiving unit, configured to receive a first notification sent by a second communication device; an execution unit, configured to perform an alarm prompt according to the first notification; wherein the first notification is used to indicate one or more paging operations within a first time period, and the one or more paging operations include paging operations that the first communication device has not successfully received and / or paging operations that the first communication device cannot successfully receive in the current state.

38. The device according to claim 37, characterized in that, The first notification further includes one or more of the following types of information: a message identification ID corresponding to the first notification; the number of the one or more paging operations; originating nodes of some or all of the one or more paging operations; relevant information about events corresponding to the one or more paging operations.

39. The device according to claim 37 or 38, characterized in that, The first paging operation within the first time period is a first paging operation, and the first notification includes a first sequence, and the first sequence is generated and / or scrambled according to at least one of the following parameters: a physical cell ID; a temporary mobile subscriber identity (TMSI) of the first communication device; an index number of a starting time domain position of a sending opportunity of the first notification; an index number of a synchronization signal block associated with the first notification; an index number of a time domain position associated with a first physical downlink control channel (PDCCH) corresponding to the first paging operation.

40. The device according to any one of claims 37-39, characterized in that, The first notification is carried in one or more of the following: a short message, a dedicated channel, and a system information block.

41. The device according to any one of claims 37 to 40, characterized in that, The manner of the alarm prompt is determined according to at least one of a communication scenario of the first communication device, user settings, and a first notification level corresponding to the first notification.

42. The device according to any one of claims 37 - 41, characterized in that Transmission parameters of the first notification are determined according to one or more of the following parameters: a first paging opportunity and a first offset within the first time period; a termination moment of the first time period and a second offset; a first notification level corresponding to the first notification; a number of first cycles included in the first time period; a first quality parameter of a signal sent by the first communication device at a first moment.

43. The apparatus according to claim 42, wherein The first offset or the second offset is determined according to a service type of the first communication device and / or the first notification level.

44. The device according to claim 42 or 43, characterized in that, The first quality parameter is used for the second communication device to predict a second quality parameter based on artificial intelligence, and the second quality parameter is a quality parameter of a signal sent by the first communication device at any moment after the first moment.

45. The device according to any one of claims 42 to 44, characterized in that, The first communication device is the terminal device i among M terminal devices, where M is a positive integer and i is a natural number from 0 to M - 1. The first moment is moment k. When the first quality parameter is SNR i (k), the quality parameter SNR i (k + n) of the signal transmitted by the terminal device i at moment k + n is: SNR i (k + n)=SNR i (k)+n*[SNR i (k)-SNR i (k - 1)]; Among them, SNR i (k - 1) represents the quality parameter of the signal transmitted by the terminal device i at time k - 1, where k > 1 and n > 0.

46. The device according to any one of claims 42-45, characterized in that, The first quality parameter is used to determine the second quality parameter, and the first notification level is determined according to the second quality parameter and a plurality of thresholds, and the plurality of thresholds include a first threshold and a second threshold related to the second quality parameter, and the first threshold is less than the second threshold.

47. The apparatus according to claim 46, wherein, The sending of the first notification is a repeated sending, and the second quality parameter and the plurality of thresholds are used to determine a repetition number of the first notification.

48. The device according to claim 47, wherein, The first time period includes Q first cycles, where Q is a positive integer greater than 1, and the repetition number N of the first notification is: when the second quality parameter is less than or equal to the first threshold, N is equal to Q or Q - 1; when the second quality parameter is greater than the first threshold and less than or equal to the second threshold, N is greater than 1 and less than Q; When the second quality parameter is greater than the second threshold, N is equal to 1.

49. The device according to any one of claims 42 - 48, characterized in that The first time period includes at least two first cycles, the at least two first cycles include an adjacent first cycle and a second cycle, and the multiple thresholds corresponding to the second cycle are determined according to the multiple thresholds corresponding to the first cycle and the first quality parameter.

50. The device according to claim 49, characterized in that, The first time period includes the P-th cycle and the (P + 1)-th cycle, where P is a positive integer, and the multiple thresholds include any threshold SNR v , the any threshold SNR corresponding to the (P + 1)-th cycle v (P + 1) is: SNR v (P + 1) = β * SNR(k) + (1 - β) * SNR v (P); Among them, SNR v (P) represents any one of the thresholds corresponding to the P-th cycle, SNR(k) represents the first quality parameter, and β represents a weight coefficient, where 0 < β < 1.

51. The device according to any one of claims 37 - 50, characterized in that, The second communication device includes a satellite in a non-terrestrial network (NTN), and the apparatus further includes: A first determination unit, configured to determine first time information related to discontinuous coverage; A second determination unit, configured to determine, before entering the no-network-coverage scenario, whether to switch from the serving cell corresponding to the satellite to a serving cell of a terrestrial network according to first auxiliary information.

52. The device according to claim 51, characterized in that, The first time information is determined according to a first distance between a projection position of the satellite on the ground and a position of the first communication device.

53. The device according to claim 51 or 52, characterized in that, When the first communication device receives the first notification after leaving the no-network-coverage scenario, the first time period includes the no-network-coverage time period, and the one or more paging messages include the paging messages related to the first communication device cached by the second communication device.

54. The device according to any one of claims 37 - 53, characterized in that, The apparatus further includes a decoding unit, configured to: Decode configuration information of a transmitting antenna for transmitting the first notification; Decode a first notification level corresponding to the first notification; Decode the repetition times of the first notification.

55. A device for wireless communication, characterized in that, The apparatus is a second communication device, and the apparatus includes: A sending unit, configured to send a first notification to a first communication device; Wherein, the first notification is used for the first communication device to perform an alarm prompt, and the first notification is further used to indicate one or more paging messages within a first time period, and the one or more paging messages include paging messages that the first communication device fails to receive successfully and / or paging messages that the first communication device cannot receive successfully in the current state.

56. The device according to claim 55, characterized in that, The first notification further includes one or more of the following information: A message identification ID corresponding to the first notification; The number of the one or more paging messages; Initiating nodes of some or all of the one or more paging messages; Relevant information of an event corresponding to the one or more paging messages.

57. The device according to claim 55 or 56, characterized in that, The first paging message within the first time period is a first paging message, the first notification includes a first sequence, and the first sequence is generated and / or scrambled according to at least one of the following parameters: Physical cell ID; The temporary mobile subscriber identity (TMSI) of the first communication device; An index number of a starting time domain position of a sending opportunity of the first notification; An index number of a synchronization signal block associated with the first notification; An index number of a time domain position associated with a first physical downlink control channel (PDCCH) corresponding to the first paging message.

58. The device according to any one of claims 55 - 57, characterized in that, The first notification is carried in one or more of the following: a short message, a dedicated channel, and a system information block.

59. The device according to any one of claims 55 - 58, characterized in that, The manner of the alarm prompt is determined according to at least one of the communication scenario of the first communication device, user settings, and a first notification level corresponding to the first notification.

60. The device according to any one of claims 55 - 59, characterized in that, The sending parameters of the first notification are determined according to one or more of the following: A first paging opportunity and a first offset within the first time period; The end time of the first time period and the second offset; The first notification level corresponding to the first notification; The number of first cycles included in the first time period; The first quality parameter of the signal sent by the first communication device at the first moment.

61. The device according to claim 60, wherein The first offset or the second offset is determined according to the service type of the first communication device and / or the first notification level.

62. The device according to claim 60 or 61, characterized in that, The device further includes: A prediction unit, configured to predict a second quality parameter based on artificial intelligence according to the first quality parameter, where the second quality parameter is the quality parameter of the signal sent by the first communication device at any moment after the first moment.

63. The device according to any one of claims 60 - 62, characterized in that, The first communication device is the terminal device i among M terminal devices, where M is a positive integer and i is a natural number from 0 to M - 1. The first moment is moment k. When the first quality parameter is SNR i (k), the quality parameter SNR i (k + n) of the signal transmitted by the terminal device i at moment k + n is: SNR i (k + n) = SNR i (k) + n * [SNR i (k) - SNR i (k - 1)]; Among them, SNR i (k - 1) represents the quality parameter of the signal transmitted by the terminal device i at time k - 1, where k > 1 and n > 0.

64. The device according to any one of claims 60 - 63, characterized in that, The first quality parameter is used to determine the second quality parameter, the first notification level is determined according to the second quality parameter and a plurality of thresholds, the plurality of thresholds include a first threshold and a second threshold related to the second quality parameter, and the first threshold is less than the second threshold.

65. The device according to claim 64, characterized in that, The sending of the first notification is a repeated sending, and the second quality parameter and the plurality of thresholds are used to determine the number of repetitions of the first notification.

66. The device according to claim 65, wherein, The first time period includes Q first cycles, Q is a positive integer greater than 1, and the number of repetitions N of the first notification is: When the second quality parameter is less than or equal to the first threshold, N is equal to Q or Q - 1; When the second quality parameter is greater than the first threshold and less than or equal to the second threshold, N is greater than 1 and less than Q; When the second quality parameter is greater than the second threshold, N is equal to 1.

67. The device according to any one of claims 60-66, characterized in that, The first time period includes at least two first cycles, the at least two first cycles include an adjacent first cycle and a second cycle, and the plurality of thresholds corresponding to the second cycle are determined according to the plurality of thresholds corresponding to the first cycle and the first quality parameter.

68. The device according to claim 67, wherein The first time period includes the P-th cycle and the (P + 1)-th cycle, where P is a positive integer, and the multiple thresholds include any threshold SNR v , the any threshold SNR corresponding to the (P + 1)-th cycle v (P + 1) is: SNR v (P + 1) = β * SNR(k) + (1 - β) * SNR v (P); wherein, SNR v (P) represents any one of the thresholds corresponding to the P-th period, SNR(k) represents the first quality parameter, and β represents a weight coefficient, where 0 < β < 1.

69. The device according to any one of claims 55 - 68, characterized in that, The second communication device includes a satellite in a non-terrestrial network (NTN), and the sending unit is further configured to send first auxiliary information to the first communication device; Wherein, the first auxiliary information is used for the first communication device to determine whether to switch from the service cell corresponding to the satellite to the service cell of the terrestrial network before entering a network coverage-free scenario, and whether the first communication device enters a network coverage-free scenario is determined according to first time information related to discontinuous coverage.

70. The device according to claim 69, wherein, The first time information is determined according to the first distance between the projection position of the satellite on the ground and the position of the first communication device.

71. The device according to claim 69 or 70, characterized in that, When the first communication device receives the first notification after leaving the network coverage-free scenario, the first time period includes the time period of network coverage-free, and the one or more paging messages include the paging messages related to the first communication device cached by the second communication device.

72. The device according to any one of claims 55 - 71, characterized in that, The device further includes a determination unit, configured to: Determine the configuration information of the transmit antenna for sending the first notification; Determine the first notification level corresponding to the first notification; Determine the number of repetitions of the first notification according to the configuration information and the first notification level.

73. A communication device, characterized in that, It includes a memory and a processor. The memory is used for storing a program, and the processor is used for calling the program in the memory to execute the method according to any one of claims 1-36.

74. A device, characterized in that, It includes a processor, which is used for calling a program from a memory to execute the method according to any one of claims 1-36.

75. A chip, characterized in that, It includes a processor, which is used for calling a program from a memory, so that the device installed with the chip executes the method according to any one of claims 1-36.

76. A computer-readable storage medium, characterized in that, A program is stored thereon, and the program causes a computer to execute the method according to any one of claims 1-36.

77. A computer program product, characterized in that, It includes a program, and the program causes a computer to execute the method according to any one of claims 1-36.

78. A computer program, characterized in that, The computer program causes a computer to execute the method according to any one of claims 1-36.

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