Non-terrestrial network NTN communication method and device

Abstract

The invention provides a method suitable for NTN communication and a communication device. The method comprises: a network device determining a paging threshold of a UE, the paging threshold comprising a number of times threshold of paging failure times or a duration threshold of paging duration; and the network equipment determines whether a paging notification signal needs to be sent to the UE before paging the UE according to the paging threshold value of the UE. According to the method and the device provided by the embodiment of the invention, the paging reliability is effectively improved, and unnecessary resource waste is also avoided.

Description

Technical Field

[0001] This application relates to the field of wireless communications, and in particular, to a communication method and a communication device for a non-terrestrial network (NTN). Background Art

[0002] Satellite communication has natural advantages such as wide coverage and being less affected by natural disasters compared to terrestrial communication. At the same time, it also brings some problems. In the scenario where a terminal directly connects to a satellite within the satellite coverage, when the terminal is placed in a bag or enters an underground garage due to occlusion reasons, the terminal will experience very poor satellite coverage service. For example, when a paging for these terminals arrives, these terminals may miss or not receive the paging in time due to the poor signal-to-noise ratio (SNR) of the paging signal.

[0003] In traditional technologies, techniques for enhancing coverage are adopted in order to improve the decoding ability of a terminal for paging information, such as repeated transmission, coverage enhancement, etc. These techniques can, to a certain extent, reduce the decoding threshold of the physical downlink control channel (PDCCH) for paging, thereby improving the decoding probability of the paging PDCCH when the SNR is poor. However, for the scenario where a terminal directly connects to a satellite, the effects that these techniques can achieve are very limited, and the reliability of paging can no longer be guaranteed. Summary of the Invention

[0004] Embodiments of this application provide an indication method and device applicable to NTN communication, enabling a terminal device to timely learn of a paging call in a scenario where it directly connects to a satellite even when the signal state is poor, thereby increasing the probability of successful paging and reducing unnecessary resource waste at the same time.

[0005] In a first aspect, a method for NTN communication is provided, which is applied to a network device. The method includes: determining a paging threshold, where the paging threshold includes a threshold for the number of paging failure times and / or a threshold for the paging duration; sending a paging notification signal to a UE according to the determined paging threshold, where the paging notification signal is used to notify the UE that a paging will be performed on the UE; and initiating a paging to the UE.

[0006] The paging notification signal refers to sending a notification signal to the UE before initiating a paging to notify the user that a paging is about to arrive. Optionally, the user can determine the paging requirement through the received notification signal, thereby changing to a more open environment and increasing the probability of successful paging. In other implementation manners, the paging notification signal can also be referred to as a pre-paging signal, an alarm signal, etc. Embodiments of this application do not make specific limitations on the name of the paging notification signal.

[0007] Based on the above solution, a paging notification signal is sent to the UE before paging the UE, and the required received signal-to-noise ratio of the paging notification signal is lower than that of paging, thereby increasing the probability of successful paging.

[0008] According to the solution proposed in the embodiments of the present application, in the NTN communication scenario, since the terminal device may not be able to receive paging calls normally when it is blocked, etc., in this case, a paging notification signal is selected to be sent to the UE before paging the UE, thereby increasing the probability of successful paging; at the same time, the paging notification signal is only sent to the UE that meets the judgment conditions, thereby reducing unnecessary resource waste.

[0009] The paging threshold can be divided into a first paging threshold and a second paging threshold. By setting the first paging threshold and the second paging threshold to classify the paging notification signal, the sending of the paging notification signal can be made more accurate, further improving the reliability of paging, and at the same time reducing unnecessary resource waste.

[0010] Combined with the first aspect, in some implementation manners of the first aspect, the paging notification signal can be divided into a first type of paging notification signal and a second type of paging notification signal according to the first paging threshold and the second paging threshold, where the required received signal-to-noise ratio of the second type of paging notification signal is lower than that of the first type of paging notification signal.

[0011] In a possible implementation manner, the first paging threshold can be set according to the number of paging failures or the paging duration, that is, set to a first number threshold or a first duration threshold.

[0012] Combined with the first aspect, in some implementation manners of the first aspect, sending a paging notification signal to the UE according to the determined paging threshold includes: when the number of paging failures for the UE is greater than the first number threshold, sending a first type of paging notification signal to the UE; or, when the paging duration for the UE is greater than the first duration threshold, sending a first type of paging notification signal to the UE.

[0013] In another possible implementation manner, the second paging threshold can be set according to the number of paging failures or the paging duration, that is, set to a second number threshold or a second duration threshold.

[0014] Combined with the first aspect, in some implementation manners of the first aspect, sending a paging notification signal to the UE according to the determined paging threshold further includes: when the number of paging failures for the UE is greater than the second number threshold, sending a second type of paging notification signal to the UE; or, when the paging duration for the UE is greater than the second duration threshold, sending a second type of paging notification signal to the UE.

[0015] Generally, the value of the second number threshold is greater than the value of the first number threshold; the value of the second duration threshold is greater than the value of the first duration threshold.

[0016] Based on the above solution, for the UE that needs to receive the paging notification signal, UEs meeting different conditions are classified, and different paging notification signals are sent to UEs meeting different conditions, which improves the probability of the UE receiving the paging notification signal and avoids unnecessary resource waste at the same time.

[0017] Optionally, the method further includes: receiving capability indication information, where the capability indication information is used to indicate that the UE supports receiving the paging notification signal.

[0018] In a possible implementation manner, the capability indication information is used to indicate that the UE supports the second type of paging notification signal. At this time, optionally, the sending of the capability indication information may also represent that the UE also supports the first type of paging notification signal, that is, there is no need to explicitly indicate that the UE supports the first type of paging notification signal separately.

[0019] In another possible implementation manner, the capability indication information includes two pieces of indication information, respectively indicating that the UE supports the first type of paging notification signal and the second type of paging notification signal.

[0020] Based on the above solution, the technical solution in the embodiments of the present application is directed to UEs supporting the characteristics of the paging notification signal, thereby improving the probability of the UE receiving the paging notification signal.

[0021] Combined with the first aspect, in some implementation manners of the first aspect, the method further includes: after receiving the paging information initiated for the UE, instructing the base station to initiate at least one paging for the UE. If the paging is successful, there is no need to send the paging notification signal, thereby reducing unnecessary resource waste.

[0022] Optionally, the method further includes receiving priority indication information, where the priority indication information is used to indicate the paging priority of the UE.

[0023] Based on the above solution, for the situation where the number of UEs is too large to send paging notification signals to all of them at the same time, paging notification signals can be sent to the UEs meeting the conditions according to the paging priorities of the UEs. By indicating the paging priorities of the UEs, the UEs with higher priorities can obtain the paging notification signals in time, thereby improving the reliability of paging.

[0024] In combination with the first aspect, in some implementations of the first aspect, the method includes: the network device is an access and mobility management function (AMF), and the AMF instructs the access network device to send the paging notification signal to the UE according to the set paging threshold.

[0025] In combination with the first aspect, in some implementations of the first aspect, the method further includes: the network device is an AMF, and the AMF sets the paging threshold by itself.

[0026] In combination with the first aspect, in some implementations of the first aspect, the method includes: the network device is an access network device, and the access network device receives the paging threshold; or, the access network device sets the paging threshold by itself.

[0027] Optionally, the paging threshold can be predefined by the protocol.

[0028] In a second aspect, a method for NTN communication is provided, which is applied to a terminal device. The method includes: receiving at least one paging notification signal of a first type and / or a paging notification signal of a second type; wherein the received signal-to-noise ratio required for the paging notification signal of the second type is lower than that of the paging notification signal of the first type.

[0029] Based on the above solution, in the NTN communication scenario, since the terminal device may not be able to receive paging calls normally when being blocked, etc., in response to such a situation, the UE can choose to receive the paging notification signal, thereby increasing the probability of successful paging. In particular, the paging notification signal is further divided into a paging notification signal of a first type and a paging notification signal of a second type, so that the probability of the UE receiving the paging notification signal is also increased, and at the same time, unnecessary resource waste is reduced.

[0030] Optionally, the method further includes: sending capability indication information, which is used to indicate that the UE supports receiving the paging notification signal of the first type and / or the paging notification signal of the second type.

[0031] In a possible implementation, the capability indication information is used to indicate that the UE supports the paging notification signal of the second type and by default supports the paging notification signal of the first type.

[0032] In another possible implementation, the capability indication information includes two pieces of indication information, respectively indicating that the UE supports the paging notification signal of the first type and the paging notification signal of the second type.

[0033] Based on the above solution, the technical solution in the embodiments of the present application is directed to the UE that supports the characteristics of the paging notification signal, thereby increasing the probability of the UE receiving the paging notification signal.

[0034] Optionally, the method further includes sending priority indication information for indicating the paging priority of the UE.

[0035] Based on the above solution, in the case where the number of UEs is too large to send paging notification signals to all of them simultaneously, the UEs reporting their own paging priorities can enable the UEs with higher priorities to obtain paging notification signals in a timely manner, thereby improving the reliability of paging.

[0036] Optionally, the method further includes sending an indication information of successful paging, which is used to indicate that the UE has successfully received paging based on the paging notification signal.

[0037] Optionally, the receiving manners of the UE for the first type of paging notification signal and the second type of paging notification signal include at least one of the following:

[0038] (1) Receiving both the first type of paging notification signal and the second type of paging notification signal;

[0039] (2) Selectively receiving only the first type of paging notification signal by judging its own signal quality;

[0040] (3) Selectively receiving only the second type of paging notification signal by judging its own signal quality.

[0041] In a possible implementation manner, the UE judges its own signal quality according to the magnitude of the reference signal receiving power (RSRP), sets a first threshold and a second threshold, or the first threshold and the second threshold can be predefined by a protocol. The specific setting manners of the first threshold and the second threshold are not limited.

[0042] The UE judges its own signal quality according to the magnitude of the RSRP. If the signal quality is lower than the second threshold, it only receives the second type of paging notification signal. If the signal quality is lower than the first threshold but higher than the second threshold, it only receives the first type of paging notification signal, where the value of the second threshold is less than the first threshold, indicating that the signal quality deteriorates further.

[0043] Based on the above solution, the manners for the UE to receive the first type of paging notification signal and the second type of paging notification signal are more flexible, and the manner of receiving paging notification signals according to its own signal quality is more accurate, which can improve the reliability of paging and also reduce unnecessary signaling overhead.

[0044] In a third aspect, an NTN communication device is provided, which includes: a processor, a memory, and a transceiver, where the memory is used to store computer programs; at least one processor, which is used to execute the computer programs or instructions stored in the memory and control the transceiver to transmit and receive signals, so that the communication device can execute the method provided by any one of the implementation manners in the first aspect when running.

[0045] In a possible implementation manner, the structure of the NTN communication device may include a processing unit and a transceiver unit. The processing unit is configured to support the communication device to execute the corresponding functions in the above method. The transceiver unit is used to support the communication between the communication device and other communication devices, so that the NTN communication device can execute the method provided by any one of the implementation manners in the first aspect when running. The NTN communication device may further include a storage unit, which is used to be coupled with the processing unit and the transceiver unit, and stores the necessary program instructions and data of the communication device, so that the NTN communication device can execute the method provided by any one of the implementation manners in the first aspect when running.

[0046] In another possible implementation manner, the NTN communication device is a chip or a chip system. The processing unit may also be embodied as a processing circuit or a logic circuit; the transceiver unit may be an input / output interface, an interface circuit, an output circuit, an input circuit, a pin, or a related circuit, etc. on the chip or the chip system, so that the NTN communication device can execute the method provided by any one of the implementation manners in the first aspect when running.

[0047] In a fourth aspect, an NTN communication device is provided, which includes: a processor, a memory, and a transceiver, where the memory is used to store computer programs; at least one processor, which is used to execute the computer programs or instructions stored in the memory and control the transceiver to transmit and receive signals, so that the communication device can execute the method provided by any one of the implementation manners in the second aspect when running.

[0048] In a possible implementation manner, the structure of the NTN communication device may include a processing unit and a transceiver unit. The processing unit is configured to support the communication device to execute the corresponding functions in the above method. The transceiver unit is used to support the communication between the communication device and other communication devices, so that the NTN communication device can execute the method provided by any one of the implementation manners in the second aspect when running. The NTN communication device may further include a storage unit, which is used to be coupled with the processing unit and the transceiver unit, and stores the necessary program instructions and data of the communication device, so that the NTN communication device can execute the method provided by any one of the implementation manners in the second aspect when running.

[0049] In another possible implementation, the NTN communication device is a chip or a chip system. The processing unit may also be embodied as a processing circuit or a logic circuit; the transceiver unit may be an input / output interface, an interface circuit, an output circuit, an input circuit, a pin, or a related circuit, etc. on the chip or the chip system, so that the NTN communication device can execute the method provided by any one of the implementations in the second aspect when operating.

[0050] In a fifth aspect, a processor is provided, including a processor that is configured to read and execute a computer program stored in a memory to execute the method in the first aspect or any of its possible implementations.

[0051] For example, the communication device may be a chip or a chip system.

[0052] Optionally, the chip further includes a memory, and the memory is connected to the processor through a circuit or a wire. The memory may store the computer program or instructions necessary for implementing the method described in the first aspect above.

[0053] Further optionally, the chip further includes a communication interface.

[0054] For operations such as transmission, sending, and receiving involved by the processor, if there is no special description, or if it does not conflict with its actual role or internal logic in the relevant description, they can all be more generally understood as operations of the processor for output, reception, input, etc., rather than the transmission, sending, and receiving operations directly performed by the radio frequency circuit and the antenna.

[0055] In a sixth aspect, an NTN communication system is provided, and the communication system includes the NTN communication device described in the third aspect and / or the NTN communication device described in the fourth aspect.

[0056] In a seventh aspect, a computer-readable storage medium is provided, and the computer-readable medium stores program code for a device to execute, and the program code includes the method for executing any one of the implementations provided in the first aspect to the second aspect above.

[0057] In an eighth aspect, a chip system is provided, and the chip system includes a processor and an interface. The interface is configured to obtain a program or instructions, and the processor is configured to call the program or instructions to implement or support the method provided by any one of the implementations in the first aspect to the second aspect above.

[0058] In a possible design, the chip system further includes a memory, and the memory is used to store necessary program instructions and data for the terminal. The chip system may be composed of chips or may include chips and other discrete devices.

[0059] In a ninth aspect, there is provided a computer program product, which includes computer program code that, when running on the computer, executes the method in any one of the possible implementations of the first aspect to the second aspect described above. Description of the Drawings

[0060] Figure 1 is a schematic diagram of a communication system architecture 100 applicable to the embodiments of the present application;

[0061] Figure 2 is a schematic flowchart of a communication method 200 provided by the embodiments of the present application;

[0062] Figure 3 is a schematic diagram of a paging indication method 300 provided by the embodiments of the present application;

[0063] Figure 4 is a schematic diagram of a paging indication method 400 provided by the embodiments of the present application;

[0064] Figure 5 is a schematic diagram of a paging indication method 500 provided by the embodiments of the present application;

[0065] Figure 6 is a schematic diagram of a paging indication method 600 provided by the embodiments of the present application;

[0066] Figure 7 is a schematic block diagram of a communication device 700 provided by the embodiments of the present application;

[0067] Figure 8 is a schematic diagram of a communication architecture 800 provided by the embodiments of the present application. Detailed Embodiments

[0068] Next, the technical solutions in the present application will be described with reference to the drawings.

[0069] Herein, as used in the specification and the appended claims of the present application, the singular forms "a", "an", "the", "above", "said", "this" are also intended to include, for example, the expression "one or more", unless there is a clear contrary indication in the context. It should also be understood that in the following embodiments of the present application, "at least one", "one or more" mean one, two or more than two. The term " / and" is used to describe the association relationship of associated objects and indicates that there can be three relationships; for example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0070] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0071] Next, taking the NTN satellite communication scenario applicable to the embodiments of the present application as an example, the technical solutions of the present application will be introduced in detail as follows.

[0072] Figure 1 It is a schematic diagram of a communication system architecture 100 applicable to the embodiments of the present application.

[0073] Satellite communication is a communication between radio communication stations on the earth (including the ground and the lower atmosphere) using satellites as relays. As Figure 1 shown, the terminal 101 is connected to the base station 103 through the air interface 102. The base station 103 is deployed on the satellite and is connected to the core network through a wireless link, and finally accesses the data network 110. At the same time, there is a wireless link between the satellites to complete the signaling interaction and data transmission between the base stations. The descriptions of each network element and their interfaces are as follows:

[0074] Terminal: It includes mobile devices that support the new air interface, typically such as handheld devices, in-vehicle devices, wearable devices, smart phones, SIP phones, wireless data cards, personal digital assistants (PDAs), computers, tablet computers, laptop computers, wireless modems, handsets, laptop computers, computers with wireless transceiver functions, smart books, vehicles and other mobile devices, or devices built into the above devices (for example, communication modules, modems or chips in the above devices), or other processing devices connected to the wireless modem. It can access the satellite network through the air interface and initiate services such as calls and Internet access. For the convenience of description, the terminal or UE will be used as an example in the following text.

[0075] Base station 103: As Figure 1 shown, the base station 103 is deployed on the satellite, mainly providing wireless access services, scheduling wireless resources for the access terminals, and providing reliable wireless transmission protocols and data encryption protocols, etc.

[0076] Core network: Its functions mainly include providing user connections, managing users, and carrying services. As a bearer network, it provides an interface to external networks. For example, its services include user access control, mobility management, session management, user security authentication, billing, etc. The core network consists of multiple functional units and can be divided into control-plane and data-plane functional entities. Among them, relatively important functional units include the Access and Mobility Management Function (AMF) 108, the Session Management Function (SMF) 109, and the User Plane Function (UPF) 107, each with different divisions of labor. For example, AMF is mainly responsible for user access management, security authentication, mobility management, etc. Specifically, it provides transmission for SM messages between the UE and the SMF, UE mobile event notification, etc.; SMF is mainly responsible for interacting with the separated data plane, including creating, updating, and deleting PDU sessions, and managing the session environment with the UPF, etc.; UPF is mainly responsible for functions such as managing the transmission of user-plane data, traffic statistics, and security eavesdropping.

[0077] Ground station 106: Generally refers to the ground equipment for satellite communication set on the Earth's surface (including those installed on ships and airplanes), mainly responsible for forwarding signaling and service data between the satellite base station and the core network.

[0078] Air interface 102: The wireless link between the base station and the terminal, defining the usage frequency, bandwidth, access timing, coding method, and handover of each wireless channel.

[0079] Xn interface 105: The interface between base stations, mainly used for signaling interaction such as handover.

[0080] NG interface 104: The interface between the base station and the core network, mainly interacting with NAS signaling of the core network and user service data.

[0081] It should be noted that the above-described communication architecture is only for exemplary illustration, and the technical solutions in the embodiments of the present application may also be used in other NTN architectures, and the embodiments of the present application do not limit this.

[0082] Figure 2 It is a schematic flowchart of a communication method 200 provided by an embodiment of the present application.

[0083] In the scenario where the terminal is directly connected to the satellite, when the terminal is placed in a bag or enters an underground garage due to reasons such as occlusion, the terminal will experience very poor satellite coverage service. For example, when a paging for these terminals arrives, these terminals may miss or fail to receive the paging information in a timely manner due to the poor signal-to-noise ratio of the paging signal.

[0084] In view of this situation, it is selected to send a paging notification signal to the UE, that is, pre-paging, which means sending a notification signal to the UE before initiating paging to notify the user that paging is about to arrive. Optionally, the user can determine the paging requirement through the received paging notification signal, so as to change to a more open environment and increase the probability of successful paging. In a possible implementation manner, the paging notification signal can also be referred to as a pre-paging signal, an alarm signal, etc. The embodiments of the present application do not specifically limit the name of the paging notification signal.

[0085] Before paging the UE, a paging notification signal is sent to the UE, and the required received signal-to-noise ratio of the paging notification signal is lower than that of paging, so as to increase the probability of successful paging.

[0086] Specifically, the paging notification signal includes a first type of paging notification signal and a second type of paging notification signal. The first type of paging notification signal can also be referred to as a general paging notification signal, a general alarm signal, etc. The embodiments of the present application do not specifically limit the name of the first type of paging notification signal; the second type of paging notification signal can also be referred to as an enhanced paging notification signal, an enhanced alarm signal, etc. The embodiments of the present application do not specifically limit the name of the second type of paging notification signal. For the convenience of description, the following embodiments will be described by taking the first type of paging notification signal and the second type of paging notification signal as examples.

[0087] Figure 2 The method 200 shown may include the following steps.

[0088] S201, sending capability indication information to indicate that the UE supports receiving a paging notification signal.

[0089] Step S201 is an optional step, and the network device can determine the capability of the UE through other means. For example, the network device can default that all UEs have the capability to receive paging notification signals, or the network device can confirm whether the UE has the capability to receive paging notification signals through the model of the UE, the version information of the operating system on the UE, other capability information of the UE, etc.

[0090] S202, the network device sets a judgment threshold according to the number of paging failures or the paging duration of the UE, and sends a paging notification signal to the UE before paging the UE according to the judgment result.

[0091] The following will detail the method provided by the embodiments of the present application with reference to the accompanying drawings. The embodiments of the present application propose multiple solutions in order to improve the problem that the reliability of paging cannot be guaranteed due to occlusion and other reasons in NTN communication.

[0092] The embodiments provided by the present application can be applied to the above Figure 1 shown communication system without limitation.

[0093] Figure 3 It is a schematic diagram of a paging indication method 300 provided by an embodiment of the present application. For ease of description, method 300 is exemplarily described by taking the interaction of a UE, a base station, and an AMF as the execution entities.

[0094] It can be understood that, described by taking the base station as an example here, the execution entity can also be other access network devices, which is not limited.

[0095] It can be understood that, described by taking the AMF as an example here, the execution entity can also be other network elements in the core network, which is not limited.

[0096] Figure 3 The shown method 300 may include the following steps.

[0097] S301, send capability indication information;

[0098] Optionally, after the UE initially accesses the communication system, it sends capability indication information to the AMF. The sent capability indication information is used to inform the AMF that the UE supports the reception of paging notification signals and has the ability to receive paging notification signals before receiving paging;

[0099] Optionally, the capability indication information is used to indicate that the UE supports the first type of paging notification signal;

[0100] Step S301 is an optional step, and the AMF can also determine the UE's capability by other means.

[0101] S302, receive paging information initiated for the UE.

[0102] S303, instruct the base station to initiate at least one paging for the UE;

[0103] Specifically, when the AMF receives paging information for the UE, it sends the paging information to the base station, instructing the base station to initiate at least one paging for the UE, that is, not to send a paging notification signal; if the paging is successful, that is, after receiving the paging success indication information sent by the UE, the process ends; otherwise, continue to execute the measures in S304.

[0104] S304, determine whether the paging initiated for the UE meets the first paging threshold;

[0105] Optionally, based on the capability indication information sent by the UE, determine whether the paging initiated for the UE meets the first paging threshold;

[0106] Optionally, the setting of the first paging threshold may include setting a first number threshold or a first duration threshold, specifically as follows:

[0107] Method 1

[0108] Set a UE-specific counter at the AMF, and set the first count threshold to X1, where X1 is an integer greater than or equal to zero. If there is still a paging for the UE after X1 paging attempts, the first count threshold is satisfied. The value of X1 here can be determined by the AMF according to the average number of paging attempts in the current tracking area, or predefined by the protocol.

[0109] Optionally, the probability of the UE receiving the first type of paging notification signal can be increased by combining with the method of expanding the paging range;

[0110] Exemplarily, the paging of the UE that satisfies the first paging threshold by the AMF is set as follows: Before reaching the set first count threshold, send a paging to the base station that the UE recently accessed; after reaching the set first count threshold, when initiating a paging again, it is extended to the secondary paging range. At this time, send a paging at the neighboring base stations, and send the first type of paging notification signal before paging the cells within the primary paging range; on the basis of satisfying the set first count threshold and still not successfully paging, it is extended to the tertiary paging range, and at the same time, send the first type of paging notification signal within the previous secondary paging range.

[0111] Method 2

[0112] Set a UE-specific timer at the AMF, and set the first duration threshold to X2, where X2 is greater than or equal to zero. It is started when the paging for the UE begins. If the AMF still does not receive the indication information that the UE has been successfully paged within X2 time, the first duration threshold is satisfied. The value of X2 here can be determined according to the average time from when the AMF initiates a paging to receiving the indication information of the UE's successful paging, or predefined by the protocol.

[0113] S305, send indication information;

[0114] Optionally, the indication information includes paging information; and the paging information includes a cell message #1, which is used to indicate that the base station needs to send the first type of paging notification signal to the UE before initiating a paging for the UE;

[0115] Optionally, the indication information includes the paging information and the cell message #1, that is, the cell message #1 can be directly inserted into the indication information for sending;

[0116] Exemplarily, a paging notification information (PNI) assistance information is added to the paging information, and the assistance information includes an information element (IE): notify before paging;

[0117] Optionally, in the case where the number of UEs meeting the first paging threshold is too large to send paging notification signals to all of them simultaneously, another cell message #2 is further included in the paging information, and the cell information #2 is used to indicate the priority when sending the first type of paging notification signal to the UEs meeting the first paging threshold;

[0118] Optionally, the cell message #2 can be directly inserted into the indication information for sending;

[0119] Optionally, the base station can calculate the priority when the UE sends the first type of paging notification signal based on at least one of the following:

[0120] (1) The UE paging priority indicated by the cell information #2;

[0121] (2) The time when paging is initiated: the earlier, the higher the priority;

[0122] (3) The time since paging failure: the longer the time, the higher the priority.

[0123] S306, Receive indication information.

[0124] S307, Before paging the UE, it is necessary to send the first type of paging notification signal to the UE.

[0125] S308, Before paging the UE, first send at least one first type of paging notification signal to the UE, and then initiate paging;

[0126] Optionally, before paging the UE, it can be selected to send multiple first type of paging notification signals to the UE and then initiate paging, so as to increase the probability of the UE receiving paging;

[0127] Optionally, the paging notification signal can be a sequence or DCI information carried by PDCCH, and the specific form of the paging notification signal is not limited in the embodiments of the present application.

[0128] In a possible implementation manner, when the UE to be paged enters the inactive state or the idle state, it starts to measure the surrounding environment, that is, starts to detect the signal quality. When the UE detects that the current signal quality is lower than the first threshold, it starts to detect the reception of the first type of paging notification signal;

[0129] Among them, the signal quality can be described by parameters such as RSRP and reference signal receiving quality (RSRQ) for representing the measurement results of radio resource management (RRM). It can also be described by other parameters indicating signal quality, and the embodiments of the present application do not limit this.

[0130] Exemplarily, the UE determines its own signal quality according to the magnitude of the RSRP and sets a first threshold. The first threshold can also be predefined by the protocol, and the embodiments of the present application do not limit the specific setting method of the first threshold.

[0131] S309. Receive a paging notification signal of the first type to notify the user that paging is coming.

[0132] Optionally, when the UE detects that the current signal quality is poor, that is, lower than the first threshold, it starts to detect and receive the paging notification signal of the first type sent by the base station. When the UE receives the at least one paging notification signal of the first type, it can adjust the signal quality, thereby improving the reliability of paging.

[0133] Exemplarily, the UE is a mobile phone. When the mobile phone receives the paging notification signal of the first type in an occluded environment, at this time, the paging requirement can be determined through the paging notification signal. For example, the mobile phone can be moved out of the occluded environment, so that the paging message from the satellite can be received, thereby improving the reliability of paging.

[0134] After the UE successfully pages, continue to execute the measures in S310.

[0135] S310. After the UE receives paging and pages successfully, send an indication information of successful paging.

[0136] Optionally, the UE sends service request information to the AMF to indicate successful paging.

[0137] If the AMF does not receive the indication information of successful paging, re-execute S308 until the indication information of successful paging is received.

[0138] In the embodiments of the present application, #1 and #2 involved in the above steps only serve as identifiers to distinguish different cell messages and should not be understood as limiting the embodiments of the present application.

[0139] In the embodiments of the present application, the first paging threshold and the second paging threshold involved in the above steps only serve as identifiers to distinguish different paging thresholds and should not be understood as limiting the embodiments of the present application.

[0140] Figure 4 It is a schematic diagram of an indication method 400 provided by an embodiment of the present application for paging. For ease of description, the method 400 is exemplarily described by taking the interaction of the execution entities as the UE, the base station, and the AMF as an example.

[0141] It can be understood that, described by taking the base station as an example here, the execution entity can also be other access network devices, which is not limited.

[0142] It can be understood that, described by taking the AMF as an example here, the execution entity can also be other network elements in the core network, which is not limited. Figure 4 The shown method 400 may include the following steps.

[0143] For the specific measures in S401 - S402, reference can be made to the content of the foregoing S301 - S302, which will not be elaborated here.

[0144] S403, send indication information;

[0145] Optionally, the indication information includes paging information, and the paging information includes a cell message #1, which is used to indicate to the base station that the UE supports the sending of paging notification signals; the paging information may further include a cell message #2, which is used to indicate a first paging threshold, and the first paging threshold is used to determine whether it is necessary to send a paging notification signal to the UE before paging the UE;

[0146] Optionally, the cell message #1 and the cell message #2 can be directly inserted into the indication information for sending;

[0147] Optionally, the setting of the first paging threshold may include setting a first number threshold or a first duration threshold, as follows:

[0148] Mode 1

[0149] Set a UE - specific counter at the base station, and set the first number threshold to X3, where X3 is an integer greater than or equal to zero. If the base station still does not receive the paging success indication information sent by the UE after X3 paging attempts, the first number threshold is met. Here, the value of X3 can be determined by the base station according to the average paging times in the current cell, or sent to the base station by the indication information of the AMF, or agreed upon by the protocol. The embodiments of the present application do not limit this.

[0150] Mode 2

[0151] A UE-specific timer is set at the base station, and the first duration threshold is set to X4, where X4 is greater than or equal to zero. It is started when the base station receives a paging message for this UE. If the base station still does not receive the paging success indication information sent by this UE within X4 time, the first duration threshold is satisfied. Here, the value of X4 can be determined according to the average time from when the base station initiates paging to when it receives the paging success indication information, or is sent to the base station in the indication information of the AMF, or is agreed upon by the protocol. This application embodiment does not limit this.

[0152] Optionally, for the case where the number of UEs that meet the first paging threshold is too large to send paging notification signals to all of them simultaneously, the paging information further includes a cell message #3, and this cell information #3 is used to indicate the priority when sending paging notification signals to UEs that meet the first paging threshold;

[0153] Optionally, the cell message #3 can be directly inserted into the indication information for sending.

[0154] S404, send paging to the UE at least once;

[0155] Specifically, when the base station receives the indication information sent by the AMF, it first initiates paging to the UE at least once, that is, does not send a paging notification signal. If the paging is successful, that is, after receiving the paging success indication information sent by the UE, the process ends; otherwise, continue to execute the measures in S406.

[0156] S405, determine whether the paging initiated to the UE meets the first paging threshold;

[0157] Optionally, based on the capability indication information sent by the UE, determine whether the UE meets the first paging threshold.

[0158] S406, according to the judgment result, determine to send a first type of paging notification signal to the UE before paging this UE;

[0159] When the first paging threshold is met, continue to execute the measures in S407.

[0160] The specific measures in S407 - S408 can refer to the content of the foregoing S308 - S309, and will not be elaborated here.

[0161] When the UE paging is successful, continue to execute the measures in S409.

[0162] S409, after the UE receives the paging and the paging is successful, send the paging success indication information;

[0163] Optionally, the UE sends an RRC connection establishment request to the base station, indicating that the UE establishes a connection through the RA process to enter the connected state, and the paging is successful.

[0164] If the base station does not receive the paging success indication information, it will re - execute S407 until it receives the paging success indication information.

[0165] In the embodiments of the present application, #1, #2, and #3 involved in the above steps only serve as identifiers for distinguishing different cell messages and should not be construed as limiting the embodiments of the present application.

[0166] In the embodiments of the present application, the first paging threshold involved in the above steps only serves as an identifier for distinguishing different paging thresholds and should not be construed as limiting the embodiments of the present application.

[0167] Figure 5 It is a schematic diagram of a paging indication method 500 provided by the embodiments of the present application. For ease of description, method 500 is exemplarily described by taking the interaction of the execution entities as UE, base station, and AMF as an example.

[0168] It can be understood that, described here by taking the base station as an example, the execution entity can also be other access network devices, which is not limited.

[0169] It can be understood that, described here by taking the AMF as an example, the execution entity can also be other network elements in the core network, which is not limited. Figure 5 The shown method 500 may include the following steps.

[0170] S501, send capability indication information;

[0171] Optionally, the sent capability indication information is used to inform the AMF that the UE supports receiving paging notification signals and has the ability to receive paging notification signals before receiving paging.

[0172] Optionally, the capability indication information is used to indicate that the UE supports the second type of paging notification signal. At this time, the sending of the capability indication information can also represent that the UE supports the first type of paging notification signal, that is, there is no need to explicitly indicate that the UE supports the first type of paging notification signal separately;

[0173] Optionally, the capability indication information includes two pieces of indication information, respectively indicating that the UE supports the first type of paging notification signal and the second type of paging notification signal;

[0174] Step S501 is an optional step, and the AMF can also determine the capabilities of the UE through other means.

[0175] The specific measures in S502 - S504 can refer to the content of the foregoing S302 - S304, and will not be elaborated here.

[0176] If the UE meets the first paging threshold, the measures in S505 will continue to be executed.

[0177] S505 - S507. Optionally, the AMF instructs the base station to send at least one paging notification signal of the first type before initiating paging for the UE, and then initiate paging. If the paging is successful, that is, after receiving the paging success indication information sent by the UE, the process ends; otherwise, continue to execute the measures in S508.

[0178] Steps S505 - S507 are optional steps. After receiving the indication information sent by the AMF, the base station can also choose not to send the paging notification signal of the first type and directly execute the steps in S508.

[0179] S508. Determine whether the paging initiated for the UE meets the second paging threshold;

[0180] Optionally, determine whether the UE meets the second paging threshold based on the capability indication information sent by the UE;

[0181] Optionally, the setting of the second paging threshold can include setting a second number threshold or a second duration threshold, as follows:

[0182] Method 1

[0183] Set a UE - specific counter at the AMF, and set the second number threshold to X5, where X5 is a positive integer and the set value of X5 is greater than X1. If there is still paging for the UE after X5 paging attempts, then the UE meets the second number threshold;

[0184] It should be understood that the starting point for judging the second number threshold and the first number threshold in S504 is the same, that is, a counter is set at the AMF. When the number of paging failures is greater than X1, the first number threshold is met; when the number of paging failures is greater than X5, the second number threshold is met.

[0185] Method 2

[0186] Set a UE - specific timer at the AMF, and set the second duration threshold to X6, where X6 is greater than or equal to zero and the set value of X6 is greater than X2. Start it when the paging for the UE begins. If the AMF still has not received the paging success indication information within X6 time, then the UE meets the second duration threshold.

[0187] It should be understood that the starting point for judging the second duration threshold and the first duration threshold in S504 is the same, that is, a timer is set at the AMF. When the paging duration is greater than X2, the first duration threshold is met; when the paging failure duration is greater than X6, the second duration threshold is met.

[0188] If the UE meets the second paging threshold, continue to execute the measures in S509.

[0189] S509, send indication information;

[0190] Optionally, the indication information includes paging information; and the paging information includes a cell message #1, which is used to indicate that the base station needs to send a second type of paging notification signal to the UE before paging the UE;

[0191] Optionally, the cell message #1 can be directly inserted into the indication information for sending;

[0192] Exemplarily, a PNI auxiliary information is added to the paging information, and the PNI auxiliary information includes an IE: enhanced notification before paging;

[0193] Optionally, for the case where the number of UEs meeting the second paging threshold is too large to send paging notification signals to all of them simultaneously, the paging information further includes another cell message #2, which is used to indicate the priority when sending paging notification signals to UEs meeting the second paging threshold;

[0194] Optionally, the cell message #2 can be directly inserted into the indication information for sending.

[0195] S510, receive indication information.

[0196] S511, determine that a second type of paging notification signal needs to be sent to the UE according to the judgment result.

[0197] S512, send at least one second type of paging notification signal to the UE before paging the UE, and then initiate paging;

[0198] Optionally, before paging the UE, multiple second types of paging notification signals can be selected to be sent to the UE, and then paging is initiated, so as to improve the probability of the UE receiving paging;

[0199] Optionally, the second type of paging notification signal can be a sequence or DCI information carried by PDCCH. The embodiments of the present application do not limit the specific form of the second type of paging notification signal.

[0200] Exemplarily, the second type of paging notification signal can have more repetition times or different sequence lengths compared with the first type of paging notification signal, so that the SNR required for the correct reception of the second type of paging notification signal is lower than that of the first type of paging notification signal. The embodiments of the present application do not limit the differences in the specific content between the second type of paging notification signal and the first type of paging notification signal.

[0201] In a possible implementation, after the UE to be paged enters the inactive state or the idle state, it starts to measure the surrounding environment, that is, it starts to detect the signal quality. When the UE detects that the current signal quality is lower than the second threshold, it starts to detect and receive the paging notification signal of the second type.

[0202] Among them, the signal quality can be described by parameters such as RSRP and RSRQ, and the embodiments of the present application do not limit this.

[0203] Exemplarily, the UE determines its own signal quality according to the magnitude of the RSRP, sets the second threshold, or the second threshold can also be predefined by the protocol. The specific setting method of the second threshold is not limited.

[0204] S513, receive the paging notification signal of the second type and notify the user that there will be a paging coming.

[0205] Optionally, when the UE detects that the current signal quality is poor, that is, lower than the second threshold, it starts to detect and receive the paging notification signal of the second type sent by the base station. When the UE receives the at least one paging notification signal of the second type, it can adjust the signal quality, thereby improving the reliability of paging.

[0206] Exemplarily, the UE is a mobile phone. When the mobile phone is in an occluded environment and receives the paging notification signal of the second type, at this time, the paging requirement can be determined through the paging notification signal of the second type, and then the mobile phone can be moved out of the occluded environment, so that the paging message from the satellite can be received, improving the reliability of paging.

[0207] In another possible implementation, the UE can independently select the receiving methods for the paging notification signal of the first type and the paging notification signal of the second type, including at least one of the following:

[0208] (1) Receive both the paging notification signal of the first type and the paging notification signal of the second type;

[0209] (2) Select to receive only the paging notification signal of the first type by judging its own signal quality;

[0210] (3) Select to receive only the paging notification signal of the second type by judging its own signal quality.

[0211] Exemplarily, the UE determines its own signal quality according to the magnitude of the RSRP. If the signal quality is lower than the second threshold, it only receives the paging notification signal of the second type. If the signal quality is lower than the first threshold but higher than the second threshold, it only receives the paging notification signal of the first type, where the value of the second threshold is less than the value of the first threshold, indicating that the signal quality deteriorates further.

[0212] After the UE successfully receives the paging, continue to execute the measures in S514.

[0213] In S514, after the UE receives the paging and the paging is successful, send a paging success indication message.

[0214] Optionally, the UE sends a service request message to the AMF to indicate that the paging is successful.

[0215] If the AMF does not receive the paging success indication message, re-execute S512 until the paging success indication message is received.

[0216] In the embodiments of the present application, #1 and #2 involved in the above steps are only used as identifiers to distinguish different cell messages, and should not be construed as limiting the embodiments of the present application.

[0217] It should be understood that in the embodiments of the present application, the paging threshold can be divided into a first paging threshold and a second paging threshold. The first paging threshold and the second paging threshold are only used as identifiers to distinguish different paging thresholds, and should not be construed as limiting the embodiments of the present application.

[0218] Figure 6 It is a schematic diagram of an indication method 600 for paging provided by the embodiments of the present application. For ease of description, method 600 is exemplarily described by taking the interaction of the UE, the base station, and the AMF as the execution entities.

[0219] It can be understood that here the base station is taken as an example for description, and the execution entity can also be other access network devices, which is not limited.

[0220] It can be understood that here the AMF is taken as an example for description, and the execution entity can also be other network elements in the core network, which is not limited. Figure 6 The shown method 600 may include the following steps.

[0221] S601, send capability indication information;

[0222] Optionally, the sent capability indication information is used to inform the AMF that the UE supports receiving paging notification signals, that is, has the ability to receive paging notification signals before receiving paging.

[0223] Optionally, the capability indication information is used to indicate that the UE supports the second type of paging notification signal. At this time, the sending of the capability indication information can also represent that the UE supports the first type of paging notification signal, that is, there is no need to explicitly indicate that the UE supports the first type of paging notification signal separately.

[0224] Optionally, the capability indication information includes two pieces of indication information, respectively indicating that the UE supports the first type of paging notification signal and the second type of paging notification signal.

[0225] Step S601 is an optional step, and the AMF can also determine the capabilities of the UE in other ways.

[0226] S602, receive the paging information initiated for the UE.

[0227] S603, send indication information;

[0228] Optionally, the indication information includes paging information, and the paging information includes a cell message #1, which is used to indicate to the base station that the UE supports receiving the second type of paging notification signal; the paging information may further include a cell message #2, which is used to indicate the first paging threshold, and the first paging threshold is used to determine whether it is necessary to send the first type of paging notification signal to the UE before paging the UE. For specific reference to the content in the foregoing S403, it will not be elaborated here; the paging information may further include a cell message #3, which is used to indicate the second paging threshold, and the second paging threshold is used to determine whether it is necessary to send the second type of paging notification signal to the UE before paging the UE;

[0229] Optionally, the cell message #1, the cell message #2, and the cell message #3 can be directly inserted into the indication information for sending;

[0230] Optionally, the setting of the second paging threshold may include setting a second number threshold or a second duration threshold, as follows:

[0231] Method 1

[0232] Set a UE-specific counter at the base station, and set the second number threshold to X7. X7 is a positive integer and the set value of X7 is greater than X3. If the base station still has not received the paging success indication information of the UE after X7 paging attempts, then the UE meets the second number threshold.

[0233] Method 2

[0234] Set a UE-specific timer at the base station, and set the second duration threshold to X8, where X8 is greater than or equal to zero and the set value of X8 is greater than X4. It is started when the base station receives the paging message for the UE. If the base station still has not received the paging success indication information of the UE within X8 time, then the UE meets the second duration threshold.

[0235] Similarly, for the case where the number of UEs meeting the second paging threshold is too large to send paging notification signals to all of them simultaneously, the paging information further includes a cell message #4, which is used to indicate the priority when sending paging notification signals to the UEs meeting the second paging threshold;

[0236] Optionally, the cell message #4 can be directly inserted into the indication information for transmission;

[0237] S604, send paging to the UE at least once;

[0238] Specifically, when the base station receives the paging message sent by the AMF, it first initiates paging to the UE at least once, that is, it does not send a paging notification signal. If the paging is successful, that is, after receiving the paging success indication information sent by the UE, the process ends; otherwise, the measures in S605 are continued;

[0239] S605, determine whether the paging initiated to the UE meets the first paging threshold;

[0240] Optionally, judge whether the UE meets the first paging threshold based on the capability indication information sent by the UE;

[0241] S606 - S607, before the base station initiates paging to the UE, it sends at least one paging notification signal of the first type, and then initiates paging. After the paging is successful, that is, after receiving the paging success indication information sent by the UE, the process ends; otherwise, the measures in S608 are continued;

[0242] Steps S606 - S607 are optional steps. The base station can also choose not to send the paging notification signal of the first type and directly execute the steps in S608.

[0243] S608, determine whether the paging initiated to the UE meets the second paging threshold;

[0244] It should be understood that the starting points for judging the second paging threshold in S608 and the first paging threshold in S605 are the same. That is, a counter is set at the base station. When the number of paging failures is greater than X3, the first number threshold is met. When the number of paging failures is greater than X7, the second number threshold is met; or, a timer is set at the base station. When the paging duration is greater than X4, the first duration threshold is met. When the paging duration is greater than X8, the second duration threshold is met.

[0245] The specific measures in S609 - S611 can refer to the content in the foregoing S511 - S513 and will not be elaborated here.

[0246] S612, after the UE receives the paging and the paging is successful, it sends the paging success indication information;

[0247] Optionally, the UE sends an RRC connection establishment request to the base station, indicating that the UE establishes a connection through the RA process and enters the connected state, that is, the paging is successful.

[0248] If the base station does not receive the paging success indication information, it will re - execute S610 until the paging success indication information is received.

[0249] In the embodiments of the present application, #1, #2, #3, and #4 involved in the above steps are only used as identifiers to distinguish different cell messages and should not be construed as limiting the embodiments of the present application.

[0250] It should be understood that in the embodiments of the present application, the paging threshold can be divided into a first paging threshold and a second paging threshold. The first paging threshold and the second paging threshold are only used as identifiers to distinguish different paging thresholds and should not be construed as limiting the embodiments of the present application.

[0251] The above combination Figures 3 to 6 has been described in detail the method provided by the embodiments of the present application. Next, in combination with Figures 7 to 8 the device provided by the embodiments of the present application will be described in detail. It should be understood that the description of the device embodiments corresponds to the description of the method embodiments. Therefore, the content not described in detail can be referred to the above method embodiments. For the sake of brevity, it will not be repeated here.

[0252] Figure 7 is a schematic block diagram of a communication device 700 provided by the embodiments of the present application. The device 700 includes a transceiver unit 710 and a processing unit 720. The transceiver unit 710 can communicate with the outside, and the processing unit 720 is used for data processing. The transceiver unit 710 can also be referred to as a communication interface or a communication unit.

[0253] Optionally, the transceiver unit 710 can also be referred to as a communication interface or a communication unit, and includes a sending unit and / or a receiving unit. The transceiver unit 710 can be a transceiver (including a transmitter and / or a receiver), an input / output interface (including an input and / or an output interface), a pin, or a circuit, etc. The transceiver unit 710 can be used to execute the sending and / or receiving steps in the above method embodiments.

[0254] Optionally, the processing unit 720 can be a processor (which can include one or more), a processing circuit with processor functions, etc., and can be used to execute other steps in the above method embodiments except for sending and receiving.

[0255] Optionally, the device 700 further includes a storage unit, and the storage unit can be a memory, an internal storage unit (such as a register, a cache, etc.), an external storage unit (such as a read-only memory, a random access memory, etc.), etc. The storage unit is used to store instructions, and the above processing unit 720 executes the instructions stored in the storage unit so that the communication device executes the above method.

[0256] It should be understood that the device 700 here is embodied in the form of functional units. The term "unit" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a proprietary processor, or a group of processors, etc.) for executing one or more software or firmware programs, a memory, a combined logic circuit, and / or other suitable components that support the described functions.

[0257] In addition, the above transceiver unit 710 may also be a transceiver circuit (for example, it may include a receiving circuit and a transmitting circuit), and the processing unit may be a processing circuit.

[0258] It should be noted that Figure 7 the device in

[0259] may also be a chip or a chip system, for example: a system on chip (SoC). Among them, the transceiver unit may be an input / output circuit, a communication interface; the processing unit is a processor, a microprocessor, or an integrated circuit integrated on the chip. There is no limitation here.

[0260] Alternatively, the device 700 may be used to perform the actions performed by the network device in the above method embodiments. At this time, the device 700 may be a satellite or a component configurable on a satellite. The transceiver unit 710 is used to perform the transceiver-related operations on the network device side in the above method embodiments, and the processing unit 720 is used to perform the processing-related operations on the network device side in the above method embodiments.

[0261] Figure 8 is a schematic diagram of a communication architecture provided by an embodiment of the present application. Figure 8 The shown communication device 800 includes: a processor 810, a memory 820, and a transceiver 830. The processor 810 is coupled to the memory 820 and is used to execute the instructions stored in the memory 820 to control the transceiver 830 to send signals and / or receive signals.

[0262] It should be understood that the above-mentioned processor 810 and memory 820 may be integrated into a processing device. The processor 810 is used to execute the program code stored in the memory 820 to implement the above functions. Specifically, in implementation, the memory 820 may also be integrated in the processor 810 or be independent of the processor 810. It should be understood that the processor 810 may also correspond to each processing unit in the previous communication device, and the transceiver 830 may correspond to each receiving unit and sending unit in the previous communication device.

[0263] It should also be understood that the transceiver 830 may include a receiver (or, receiver) and a transmitter (or, transmitter). The transceiver may further include an antenna, and the number of antennas may be one or more. The transceiver may also be a communication interface or an interface circuit.

[0264] It should be understood that when the communication device 800 is a chip, the chip includes an interface unit and a processing unit. Among them, the interface unit may be an input / output circuit or a communication interface; the processing unit may be a processor, a microprocessor, or an integrated circuit integrated on the chip.

[0265] In the implementation process, the steps of the above method may be completed by the integrated logic circuit in the hardware of the processor or the instructions in the form of software. The steps of the method disclosed in combination with the embodiments of the present application may be directly implemented by the execution of the hardware processor, or be implemented by the combination of the hardware and software modules in the processor. The software module may be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and combines its hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here.

[0266] It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the above method embodiments can be completed by the integrated logic circuit in the hardware of the processor or instructions in software form. The above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. It can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as being executed and completed by the hardware decoding processor, or executed and completed by a combination of the hardware and software modules in the decoding processor. The software module may be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. This storage medium is located in the memory, and the processor reads the information in the memory and combines its hardware to complete the steps of the above method.

[0267] The present application also provides a computer-readable medium, on which a computer program is stored, and when the computer program is executed by the computer, it realizes the functions of any one of the above method embodiments.

[0268] The present application also provides a computer program product, and when the computer program product is executed by the computer, it realizes the functions of any one of the above method embodiments.

[0269] 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 instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from a website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated. The available media can be magnetic media (such as floppy disks, hard disks, magnetic tapes), optical media (such as high-density digital video discs (DVDs)), or semiconductor media (such as solid state disks (SSDs)), etc.

[0270] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. A professional technician can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0271] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0272] In several embodiments provided by the present 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 illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, 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 displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.

[0273] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0274] In addition, in each embodiment of the present application, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0275] If the functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions in the embodiments of the present application, in essence, or the parts that contribute to the prior art, or parts of the technical solutions, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs, and other media that can store program codes.

[0276] As described above, the above are only the specific implementation manners of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for non-terrestrial network (NTN) communication, applied to a network device, characterized in that, it includes: Determine a paging threshold, where the paging threshold includes a count threshold of the number of paging failures and / or a duration threshold of the paging duration; Send a paging notification signal to a user equipment (UE) according to the paging threshold, where the paging notification signal is used to notify the UE that a paging will be initiated for the UE; Initiate a paging to the UE.

2. The method according to claim 1, characterized in that, the step of sending the paging notification signal to the UE according to the paging threshold includes: When the number of paging failures for the UE is greater than a first count threshold, send the paging notification signal to the UE; or, When the paging duration for the UE is greater than a first duration threshold, send the paging notification signal to the UE.

3. The method according to claim 2, characterized in that, the step of sending the paging notification signal to the UE according to the paging threshold further includes: When the number of paging failures for the UE is greater than a second count threshold, send the paging notification signal to the UE; or when the paging duration for the UE is greater than a second duration threshold, send the paging notification signal to the UE; Send a first type of paging notification signal to the UE based on the first count threshold or the first duration threshold; Send a second type of paging notification signal to the UE based on the second count threshold or the second duration threshold; wherein, the received signal-to-noise ratio required for the second type of paging notification signal is lower than that of the first type of paging notification signal.

4. The method according to any one of claims 1 to 3, characterized in that, the method further includes: Receive capability indication information, where the capability indication information is used to indicate whether the UE supports receiving the paging notification signal; Determine whether the UE meets the paging threshold according to the capability indication information.

5. The method according to any one of claims 1 to 4, characterized in that, the method further includes: Receive priority indication information, where the priority indication information is used to indicate the paging priority of the UE; The step of sending the paging notification signal to the UE according to the paging threshold includes: Sending the paging notification signal to the UE according to the paging priority of the UE.

6. The method according to any one of claims 1 to 5, characterized in that, the network device is an access and mobility management function (AMF), the step of sending the paging notification signal to the UE according to the paging threshold includes: According to the paging threshold, instruct the access network device to send the paging notification signal to the UE.

7. The method according to any one of claims 1 to 5, characterized in that, the network device is an access network device, the step of determining the paging threshold further includes: Receive the paging threshold from the AMF.

8. A method for NTN communication, applied to a terminal device, characterized in that, it includes: Receive at least one first type of paging notification signal and / or a second type of paging notification signal; The required received signal-to-noise ratio of the paging notification signal of the second type is lower than that of the paging notification signal of the first type.

9. The method according to claim 8, wherein, the method further comprises: sending capability indication information, which is used to indicate that the UE supports receiving the paging notification signal of the first type and / or the paging notification signal of the second type.

10. The method according to any one of claims 8 to 9, wherein, the method further comprises: sending priority indication information, which is used to indicate the paging priority of the UE.

11. The method according to any one of claims 8 to 10, wherein, the receiving at least one paging notification signal of the first type and / or the paging notification signal of the second type further comprises: receiving the paging notification signal of the first type and / or the paging notification signal of the second type according to the signal quality of the UE; when the signal quality of the UE is lower than a first threshold and higher than a second threshold, the UE receives the paging notification signal of the first type; when the signal quality of the UE is lower than the second threshold, the UE receives the paging notification signal of the second type, and the value of the second threshold is less than the first threshold.

12. An NTN communication device, wherein, comprises: a processing unit and a transceiver unit, the processing unit is used to determine a paging threshold; the transceiver unit sends a paging notification signal to the UE according to the paging threshold, and the paging notification signal is used to notify the UE that the UE is to be paged; the transceiver unit is further used to receive a paging according to the paging notification signal.

13. An NTN communication device, wherein, comprises: a processing unit and a transceiver unit, the transceiver unit is used to receive the paging notification signal of the first type and / or the paging notification signal of the second type; the processing unit is used to determine the signal quality of the UE; the UE receives the paging notification signal of the first type and / or the paging notification signal of the second type according to the signal quality.

14. An NTN communication device, wherein, comprises: a processor, and the processor is coupled with a memory; the processor is used to execute a computer program stored in the memory, so that the device executes the method according to any one of claims 1 to 7, or so that the device executes the method according to any one of claims 8 to 11.

15. An NTN communication system, wherein, comprises the NTN communication device according to claim 12 and / or the NTN communication device according to claim 13.

16. A computer-readable storage medium, wherein, comprises: a computer program is stored on the computer-readable storage medium, and when the computer program runs on a computer, the computer is made to execute the method according to any one of claims 1 to 7, or the computer is made to execute the method according to any one of claims 8 to 11.

17. A chip system, wherein, Comprising: a processor, configured to call and run a computer program from a memory, such that a communication device installed with the chip system executes the method according to any one of claims 1 to 7, or such that a communication device installed with the chip system executes the method according to any one of claims 8 to 11.

18. A computer program product, characterized in that the computer program product includes instructions for executing the method according to any one of claims 1 to 7, or includes instructions for executing the method according to any one of claims 8 to 11.

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