CN118057976A

CN118057976A - Paging method, device and equipment and storage medium

Info

Publication number: CN118057976A
Application number: CN202280003555.4A
Authority: CN
Inventors: 毛玉欣
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2024-05-21
Also published as: WO2024059981A1

Abstract

The disclosure provides a paging method, a paging device, paging equipment, and paging storage media, and belongs to the technical field of communication. The AMF device receives no-coverage indication information, where the no-coverage indication information is used to indicate a no-signal coverage period before the terminal device obtains a signal coverage of a next satellite access network, and then performs mobility management for the terminal device according to the no-coverage indication information. Therefore, the paging method provided by the disclosure avoids the situation that the AMF device sends the paging request message to the terminal device in the signal coverage-free time period, and the terminal device cannot receive the paging request message because the terminal device is in the signal coverage-free state, so that the paging request message sent by the network device fails and unnecessary message sending is caused, thereby reducing the signaling and system overhead of the network side and saving energy consumption.

Description

Paging method, device and equipment and storage medium

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a paging method, apparatus, and device, and a storage medium.

Background

In a communication system, when a terminal device passes through a satellite access network (such as an access 5GC network), discontinuous coverage may be provided for an area where the terminal device is located due to some reasons (such as a satellite type (non-terrestrial-synchronous type), the number of satellites, and satellite beam limitation). However, when there is no signal coverage, the terminal device may still continuously perform some services (such as cell search and monitoring paging request messages, etc.), which may cause unnecessary energy consumption. Based on this, power saving mechanisms such as eDRX (extended Discontinuous Reception ) were introduced to avoid the above. Under the eDRX mechanism, the terminal device can develop services based on eDRX parameters, wherein the eDRX parameters comprise eDRX periods and PTWs (PAGING TIME Window), the terminal device can be paged by the network device only in the PTW of each eDRX period after entering a power saving state, wake up and resume connection to develop services, and the rest of the terminal devices are in a dormant state and do not develop services.

In the related art, in order to ensure that a terminal device can normally communicate through a satellite access network when a satellite has signal coverage, the eDRX period is set to be smaller than the signal coverage duration of the satellite

However, in the related art, if the eDRX period setting is smaller than the signal coverage duration, performing the power saving mode according to the eDRX period may cause that there is PTW of the eDRX period in the no-signal coverage duration of the satellite, that is, the network device may initiate paging of the terminal device according to the PTW in the no-signal coverage duration, and at this time, since the satellite has no signal coverage to the area of the terminal device, the connection with the terminal device has been released, and thus the paging will not succeed, but multiple paging in the no-signal coverage period will increase unnecessary network overhead. For example, a satellite will provide satellite signal coverage to the area where the terminal device is located every 3 hours for 3 minutes, and the eDRX period is set to 179.2s (approximately 3 minutes), so that there are still PTWs for multiple eDRX periods during each satellite signal coverage period for 3 hours, at which time the network side device may continue to send paging request messages to the terminal device within the PTW for each eDRX period during the satellite signal coverage period.

Disclosure of Invention

The paging method, device and equipment and the storage medium are used for solving the technical problems of high signaling overhead and high energy consumption caused by the transmission of unnecessary messages in the related art method.

In a first aspect, an embodiment of the present disclosure provides a paging method, performed by an AMF device, including:

Receiving non-coverage indication information; the coverage-free indication information is used for indicating a coverage-free time period before the terminal equipment obtains the next satellite access network signal coverage;

And executing mobility management for the terminal equipment according to the non-coverage indication information.

In the paging method provided by the disclosure, the AMF device may receive no-coverage indication information, where the no-coverage indication information is used to indicate a no-signal coverage period before the terminal device obtains a signal coverage of a next satellite access network, and then the AMF device may perform mobility management for the terminal device according to the no-coverage indication information. Wherein, the mobility management specifically includes: the AMF device does not send a paging request message to the terminal device in a time period indicated by the no coverage indication information. Therefore, in the method provided by the disclosure, the AMF device does not send the paging request message to the terminal device in the no-signal coverage time period, so that the situation that the AMF device sends the paging request message to the terminal device in the no-signal coverage time period and the terminal device cannot receive the paging request message due to the no-signal coverage state is avoided, thereby causing the paging request message sent by the network device to fail and causing unnecessary message sending is avoided, signaling and system overhead of the network side are reduced, and energy consumption is saved.

Optionally, the no-coverage indication information is further used for indicating: and the AMF equipment does not send a paging request message to the terminal equipment in the no-signal coverage time period.

Optionally, performing mobility management for the terminal device according to the coverage-free indication information includes:

And not sending a paging request message to the terminal equipment in the time period indicated by the non-coverage indication information.

Optionally, the receiving the coverage-free indication information includes at least one of:

receiving the non-coverage indication information sent by the terminal equipment;

Receiving the non-coverage indication information sent by access network equipment;

Receiving the non-coverage indication information sent by the network element of the network data analysis function NWDAF;

and receiving the non-coverage indication information sent by the application server capable of acquiring the satellite ephemeris information.

Optionally, the method further comprises:

And receiving a first extended discontinuous reception eDRX parameter sent by the terminal equipment, wherein the first eDRX parameter is a parameter of the terminal equipment requesting authorization from the AMF equipment.

Optionally, receiving the first eDRX parameter and/or the no-coverage indication information sent by the terminal device includes:

and receiving a registration request or a registration update request sent by the terminal equipment, wherein the registration request or the registration update request comprises the first eDRX parameter and/or non-coverage indication information.

Optionally, the method further comprises:

And setting or authorizing eDRX parameters for the terminal equipment according to the time period indicated by the non-coverage indication information.

Optionally, the authorizing eDRX parameters for the terminal device according to the time period indicated by the no coverage indication information includes:

performing eDRX parameter authorization based on the time period indicated by the non-coverage indication information and/or the first eDRX parameter to determine a second eDRX parameter;

And responding to the success of the authorization, sending a registration success message or a registration update success message to the terminal equipment, wherein the registration success message or the registration update success message comprises a second eDRX parameter authorized by the AMF equipment.

Optionally, the method further comprises:

And sending a paging request message to the terminal equipment according to the second eDRX parameter and the non-coverage indication information.

Optionally, the sending a paging request message to the terminal device according to the second eDRX parameter and the coverage-free indication information includes:

the paging request message may be transmitted to the terminal device in a paging time window PTW of an eDRX cycle of the second eDRX parameter at a time other than the time period indicated by the no coverage indication information.

Optionally, the no coverage indication information includes at least one of the following information:

start time of no satellite access network signal coverage and duration of no satellite access network signal coverage;

a start time of no satellite access network signal coverage and a predetermined value, the predetermined value being: a value obtained by rounding up or rounding down the quotient of the duration without satellite access network signal coverage and the eDRX period of the first eDRX parameter or the second eDRX parameter;

start time and end time of no satellite access network signal coverage.

In a second aspect, an embodiment of the present disclosure provides a paging method, performed by a terminal device, including:

Sending non-coverage indication information to AMF equipment; wherein, the no coverage indication information is used for indicating: the terminal device has no signal coverage time period before obtaining the next satellite access network signal coverage.

Optionally, the method further comprises:

And sending the non-coverage indication information to the AMF equipment in response to the fact that the duration between the current time and the end time of signal coverage of the terminal equipment by the satellite access network used by the terminal equipment is smaller than the preset duration.

Optionally, the method further comprises:

sending a first eDRX parameter to AMF equipment, wherein the first eDRX parameter is a parameter for requesting authorization from the AMF equipment by the terminal equipment;

and receiving an authorized second eDRX parameter sent by the AMF equipment.

Optionally, the method further comprises:

responding to the access of the terminal equipment to a satellite access network, and acquiring satellite ephemeris information;

Determining satellite coverage information corresponding to the terminal equipment based on the satellite ephemeris information and the position information of the terminal equipment; wherein the satellite coverage information is used to indicate at least one of: the time of signal coverage, the time of losing signal coverage, the time of no signal coverage, the time of next signal coverage; the position information of the terminal equipment indicates the current position of the terminal equipment and/or the predicted position of the terminal equipment at preset time;

determining the first eDRX parameter according to the satellite coverage information;

and determining the non-coverage indication information according to the satellite coverage information.

Optionally, sending the first eDRX parameter and/or the no coverage indication information to an AMF device includes:

sending a registration request or a registration update request to the AMF equipment, wherein the registration request or the registration update request comprises the first eDRX parameter and/or non-coverage indication information;

the receiving the authorized second eDRX parameter sent by the AMF device includes:

and receiving a second eDRX parameter which is sent by the AMF device through a registration success message or a registration update success message.

Optionally, the method further comprises:

and monitoring the paging request message.

Optionally, the monitoring the paging request message includes:

and monitoring a paging request message based on the second eDRX parameter.

Optionally, the monitoring the paging request message based on the second eDRX parameter includes:

and monitoring the paging request message in the PTW of the eDRX cycle of the second eDRX parameter at a time except for the time period indicated by the non-coverage indication information.

start time and end time of no satellite access network signal coverage.

In a third aspect, an embodiment of the present disclosure provides a paging method, which is executed by at least one of an access network device, NWDAF network elements, and an application server capable of acquiring satellite ephemeris information, including:

Optionally, the method further comprises:

start time and end time of no satellite access network signal coverage.

In a fourth aspect, an embodiment of the present disclosure provides a communication apparatus configured in an AMF device, including:

The receiving module is used for receiving the non-coverage indication information; the coverage-free indication information is used for indicating a coverage-free time period before the terminal equipment obtains the next satellite access network signal coverage;

And the management module is used for executing mobility management for the terminal equipment according to the non-coverage indication information.

In a fifth aspect, an embodiment of the present disclosure provides a communication apparatus configured in a terminal device, including:

The sending module is used for sending the non-coverage indication information to the AMF equipment; wherein, the no coverage indication information is used for indicating: the terminal device has no signal coverage time period before obtaining the next satellite access network signal coverage.

In a sixth aspect, an embodiment of the present disclosure provides a communication apparatus configured in at least one of an access network device, NWDAF network element, and an application server capable of acquiring satellite ephemeris information, including:

In a seventh aspect, embodiments of the present disclosure provide a communication device comprising a processor, which when calling a computer program in a memory, performs the method of the first aspect described above.

In an eighth aspect, an embodiment of the present disclosure provides a communication device, including a processor, which when calling a computer program in a memory, performs the method of the second aspect.

In a ninth aspect, an embodiment of the disclosure provides a communication device, which includes a processor, when the processor invokes a computer program in a memory, to perform the method described in the third aspect.

In a tenth aspect, embodiments of the present disclosure provide a communication apparatus comprising a processor and a memory, the memory having a computer program stored therein; the processor executes the computer program stored in the memory to cause the communication device to perform the method of the first aspect described above.

In an eleventh aspect, embodiments of the present disclosure provide a communication apparatus including a processor and a memory, the memory having a computer program stored therein; the processor executes the computer program stored in the memory to cause the communication device to perform the method of the second aspect described above.

In a twelfth aspect, embodiments of the present disclosure provide a communication apparatus including a processor and a memory, the memory having a computer program stored therein; the processor executes the computer program stored in the memory to cause the communication device to perform the method according to the third aspect described above.

In a thirteenth aspect, embodiments of the present disclosure provide a communications device comprising a processor and interface circuitry for receiving code instructions and transmitting to the processor, the processor being configured to execute the code instructions to cause the device to perform the method of the first aspect described above.

In a fourteenth aspect, embodiments of the present disclosure provide a communications apparatus comprising a processor and interface circuitry for receiving code instructions and transmitting to the processor, the processor for executing the code instructions to cause the apparatus to perform the method of the second aspect described above.

In a fifteenth aspect, embodiments of the present disclosure provide a communications apparatus comprising a processor and interface circuitry for receiving code instructions and transmitting to the processor, the processor for executing the code instructions to cause the apparatus to perform the method of the third aspect described above.

In a sixteenth aspect, an embodiment of the present disclosure provides a core network system, including:

NWDAF network element, which is used to send non-coverage indication information to AMF equipment; wherein, no coverage indication information is used for indicating: the terminal equipment obtains a signal coverage-free time period before the next satellite access network signal coverage;

the AMF equipment is used for receiving the non-coverage indication information;

The AMF device is further used for executing mobility management for the terminal device according to the non-coverage indication information.

In a seventeenth aspect, embodiments of the present disclosure provide a communication system configured to perform the method according to any one of the first to third aspects.

In an eighteenth aspect, embodiments of the present disclosure provide a communication system, which includes the communication device of the third aspect to the communication device of the fourth aspect, or which includes the communication device of the seventh aspect to the communication device of the ninth aspect, or which includes the communication device of the tenth aspect to the communication device of the twelfth aspect, or which includes the communication device of the thirteenth aspect to the communication device of the fifteenth aspect.

In a nineteenth aspect, an embodiment of the present invention provides a computer readable storage medium storing instructions for use by a network device as described above, which when executed, cause the terminal device to perform the method according to any one of the first to third aspects.

In a twentieth aspect, the present disclosure also provides a computer program product comprising a computer program which, when run on a computer, causes the computer to perform the method of any one of the first to third aspects described above.

In a twenty-first aspect, the present disclosure provides a chip system comprising at least one processor and an interface for supporting a network device to implement the functions involved in the method of any one of the first to third aspects, e.g. to determine or process at least one of data and information involved in the above method. In one possible design, the system-on-chip further includes a memory to hold the necessary computer programs and data for the source and secondary nodes. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

In a twenty-second aspect, the present disclosure provides a computer program which, when run on a computer, causes the computer to perform the method of any one of the above first to third aspects.

Drawings

The foregoing and/or additional aspects and advantages of the present disclosure will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the disclosure;

Fig. 2 is a flow chart of a paging method according to another embodiment of the present disclosure;

fig. 3 is a flow chart of a paging method according to still another embodiment of the present disclosure;

fig. 4 is a flowchart of a paging method according to another embodiment of the present disclosure;

fig. 5 is a flowchart of a paging method according to another embodiment of the present disclosure;

fig. 6 is a flow chart of a paging method according to still another embodiment of the present disclosure;

fig. 7 is a flowchart of a paging method according to another embodiment of the present disclosure;

fig. 8 is a flow chart of a paging method according to an embodiment of the present disclosure;

fig. 9 is a flowchart of a paging method according to another embodiment of the present disclosure;

Fig. 10 is a flow chart of a paging method according to still another embodiment of the present disclosure;

fig. 11a is a flowchart of a paging method according to another embodiment of the present disclosure;

fig. 11b is a flowchart illustrating a paging method according to another embodiment of the present disclosure;

Fig. 12 is a flowchart of a paging method according to another embodiment of the present disclosure;

fig. 13 is a flow chart of a paging method according to still another embodiment of the present disclosure;

fig. 14a is a flowchart of a paging method according to another embodiment of the present disclosure;

fig. 14b is an interactive flow chart of a paging method provided by a further embodiment of the present disclosure;

fig. 15 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure;

Fig. 16 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure;

Fig. 17a is a schematic structural diagram of a communication device according to another embodiment of the present disclosure;

fig. 17b is a schematic structural diagram of a core network system according to an embodiment of the present disclosure;

fig. 18 is a block diagram of a user device provided by an embodiment of the present disclosure;

Fig. 19 is a block diagram of a network side device according to an embodiment of the present disclosure.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present disclosure. Rather, they are merely examples of apparatus and methods consistent with aspects of embodiments of the present disclosure as detailed in the accompanying claims.

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the disclosure. As used in this disclosure of embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of embodiments of the present disclosure. The words "if" and "if" as used herein may be interpreted as "at … …" or "at … …" or "in response to a determination", depending on the context.

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the like or similar elements throughout. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of illustrating the present disclosure and are not to be construed as limiting the present disclosure.

For ease of understanding, the terms involved in the present application are first introduced.

1. Extended discontinuous reception cycle (extended Discontinuous Reception, eDRX)

The terminal device performs power saving according to the eDRX parameter.

2. Paging time Window (PAGING TIME Window PTW)

The PTW is set in the eDRX period, the terminal equipment can only receive the paging of the network for the terminal equipment in the set PTW, and the terminal equipment is in a dormant state and does not receive the paging message in the rest time.

In order to better understand a paging method disclosed in an embodiment of the present disclosure, a description is first given below of a communication system to which the embodiment of the present disclosure is applicable.

Referring to fig. 1, fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the disclosure. The communication system may include, but is not limited to, one network device and one terminal device, and the number and form of devices shown in fig. 1 are only for example and not limiting the embodiments of the present disclosure, and may include two or more network devices and two or more terminal devices in practical applications. The communication system shown in fig. 1 is exemplified as including a terminal device 11 and an AMF device 12.

It should be noted that the technical solution of the embodiment of the present disclosure may be applied to various communication systems. For example: long term evolution (long term evolution, LTE) system, fifth generation (5th generation,5G) mobile communication system, 5G New Radio (NR) system, or other future new mobile communication system, etc.

The AMF device 12 in the embodiment of the present disclosure is a device deployed in a core network, and functions of the AMF device 12 are mainly to provide user connection, management of users, and completion of bearer for services, and provide an interface to an external network as a bearer network. For example, AMF devices in a 5G NR system may include access and mobility management functions (ACCESS AND Mobility Management Function, AMF) network elements, user plane functions (User Plane Function, UPF) network elements, session management functions (Session Management Function, SMF) network elements, and so on.

For example, AMF device 12 in an embodiment of the application may include a location management function network element. Optionally, the location management function network element includes a location server (location server), where the location server may be implemented as any one of the following: LMF (Location Management Function, location management network element), E SMLC (ENHANCED SERVING Mobile Location Centre, mobile location center for enhanced services), SUPL (Secure User Plane Location ), SUPL SLP (SUPL Location Platform, secure user plane location platform).

The terminal device 11 in the embodiment of the present disclosure is an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal device may also be referred to as a terminal device (terminal), a User Equipment (UE), a Mobile Station (MS), a mobile terminal device (MT), etc. The terminal device may be an automobile with communication function, a smart car, a mobile phone (mobile phone), a wearable device, a tablet computer (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned-driving (self-driving), a wireless terminal device in teleoperation (remote medical surgery), a wireless terminal device in smart grid (SMART GRID), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (SMART CITY), a wireless terminal device in smart home (smart home), or the like. The embodiment of the present disclosure does not limit the specific technology and the specific device configuration adopted by the terminal device.

It may be understood that, the communication system described in the embodiments of the present disclosure is for more clearly describing the technical solutions of the embodiments of the present disclosure, and is not limited to the technical solutions provided in the embodiments of the present disclosure, and those skilled in the art can know that, with the evolution of the system architecture and the appearance of new service scenarios, the technical solutions provided in the embodiments of the present disclosure are equally applicable to similar technical problems.

The paging method, apparatus, device and storage medium provided by the embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

Fig. 2 is a flow chart of a paging method provided in an embodiment of the present disclosure, where the method is performed by an AMF (access and mobility management function ) device, and as shown in fig. 2, the paging method may include the following steps:

Step 201, receiving no-coverage indication information, where the no-coverage indication information is used to indicate a no-signal coverage period before the terminal device obtains the next signal coverage of the satellite access network.

Among other things, in one embodiment of the present disclosure, the method of the present disclosure is applied in a satellite access network. Specifically, when the terminal device accesses the network through the satellite, the satellite may provide discontinuous coverage for the area where the terminal device is located (i.e., the specific time period provides signal coverage for the specific area, and no signal coverage can be provided in the same area outside the specific time period) based on the satellite type (non-terrestrial synchronous type), the number of satellites, and the satellite beam limitation, where the AMF device still continuously sends the paging request message to the terminal device when the terminal device is not provided with signal coverage. Therefore, in order to avoid that the AMF device still sends the paging request message to the terminal device in the no-signal coverage period, which leads to unnecessary energy consumption, the AMF device side generally needs to acquire no-coverage indication information, so as to perform a certain energy-saving operation based on the no-coverage indication information.

And, in one embodiment of the present disclosure, the above non-coverage indication information may include at least one of the following information:

The starting time of the signal coverage of the satellite-free access network and a predetermined value are: a value obtained by rounding up or rounding down the quotient of the duration of no satellite access network signal coverage and the eDRX period of the first eDRX parameter or the second eDRX parameter (for example, the eDRX period is 3 hours, the duration of no satellite signal coverage is 8 hours, the predetermined value may be set to 2 or 3);

start time and end time of no satellite access network signal coverage.

Among other things, in one embodiment of the present disclosure, the eDRX parameters mentioned above may include eDRX period and PTW, which may be used for a terminal device to achieve a degree of power saving effect. In particular, the terminal device may receive paging messages sent by the network device only within the PTW of each eDRX cycle, while being in a power saving state for the rest of the time. And, in one embodiment of the present disclosure, the terminal device generally needs to request eDRX parameters from the AMF device first, grant eDRX parameters to the terminal device by the AMF device, and then communicate based on the eDRX parameters granted by the AMF device. Based on this, in one embodiment of the disclosure, the first eDRX parameter is specifically a parameter that the terminal device requests authorization from the AMF device, and the second eDRX parameter is specifically a parameter that the AMF device grants, where the first eDRX parameter and the second eDRX parameter may be the same or different.

Further, in one embodiment of the present disclosure, the method for receiving the no-coverage indication information may include at least one of:

receiving non-coverage indication information sent by terminal equipment;

receiving non-coverage indication information sent by access network equipment;

Receiving NWDAF (Network DATA ANALYTICS Function, network data analysis Function) Network element transmitted non-coverage indication information;

It should be noted that, in one embodiment of the present disclosure, when different devices send no coverage indication information to an AMF device, specific contents included in the no coverage indication information are also different.

Specifically, in one embodiment of the present disclosure, when at least one of the access network device, NWDAF network element, and an application server capable of acquiring satellite ephemeris information sends no coverage indication information to the AMF device, the no coverage indication information may include at least one of the following information:

start time and end time of no satellite access network signal coverage.

In another embodiment of the present disclosure, when the terminal device transmits the no-coverage indication information to the AMF device, the no-coverage indication information may include at least one of the following information:

The starting time of the signal coverage of the satellite-free access network and a predetermined value are: a value obtained by rounding up or rounding down the quotient of the duration without satellite access network signal coverage and the eDRX period of the first eDRX parameter or the second eDRX parameter;

start time and end time of no satellite access network signal coverage.

Furthermore, it should be noted that, in an embodiment of the present disclosure, the above-mentioned no-coverage indication information may be sent to the AMF device by at least one of the terminal device, the access network device, NWDAF, and the application server capable of acquiring satellite ephemeris information when it is determined that a duration between the current time and an end time of signal coverage of the terminal device by the satellite access network used by the terminal device is less than a preset duration (i.e., when the terminal device is about to leave signal coverage of the current access satellite). Or the above-mentioned no-coverage indication information may also be sent to the AMF device at any time (e.g. the time when the terminal device has just accessed the current access satellite or after the terminal device has accessed the preset time period (e.g. 10 s)) within the signal coverage time period of the terminal device. Wherein, the no coverage indication information may be sent to the AMF device through a registration request or a registration update request.

Step 202, executing mobility management for the terminal equipment according to the non-coverage indication information.

In one embodiment of the disclosure, the method for performing mobility management for a terminal device according to the no coverage indication information may include: and not sending the paging request message to the terminal equipment in the time period indicated by the no coverage indication information. It should be noted that, in one embodiment of the present disclosure, the above "sending no paging request message to the terminal device in the period indicated by the no coverage indication information" may be specifically understood as: even if the PTW is reached in the time period without the coverage indication information, the AMF equipment does not send the paging request message to the terminal equipment, thereby avoiding the AMF equipment from sending unnecessary messages to the terminal equipment in the time period without the signal coverage and reducing the cost of signaling and power consumption of the network side.

And, in one embodiment of the present disclosure, when the no coverage indication information received by the AMF device is different, the method of not transmitting the paging request message to the terminal device for the period of time indicated by the no coverage indication information is also different.

Specifically, in one embodiment of the present disclosure, when the received coverage-free indication information includes a start time of coverage of a satellite-free access network signal and a duration of coverage of the satellite-free access network signal, the method for not sending a paging request message to the terminal device during the period indicated by the coverage-free indication information may include: no paging request message is sent to the terminal device for a subsequent duration from a start time without satellite access network signal coverage.

And, in another embodiment of the present disclosure, when the received no coverage indication information includes a start time of no satellite access network signal coverage and a predetermined value, the method of not transmitting the paging request message to the terminal device for a period of time indicated by the no coverage indication information may include: and from the starting time without satellite access network signal coverage, not sending a paging request message to the terminal equipment, setting a counter at the same time, setting the count value of the counter to the preset value, and reducing the count value by one every time an eDRX period is passed until the count value of the counter becomes 0, and stopping the action of 'not sending the paging request message to the terminal equipment'. Or starting to count the number of the eDRX cycles passing by without sending a paging request message to the terminal device from the starting time without satellite access network signal coverage, and stopping the action of 'not sending the paging request message to the terminal device' when the count value is equal to the preset value.

In another embodiment of the present disclosure, when the received coverage-free indication information includes a start time and an end time of coverage of the satellite-free access network signal, the method of not transmitting the paging request message to the terminal device for the period of time indicated by the coverage-free indication information may include: the paging request message is not transmitted to the terminal device during a period from a start time of no satellite access network signal coverage to an end time of no satellite access network signal coverage.

It should be noted that, in the embodiment of the present disclosure, other core network elements having similar functions to the AMF may be used to implement the same functions, for example, MME or the like may be used as an alternative to the AMF, and the embodiments thereof are similar and will not be described herein.

In summary, in the paging method provided in the embodiment of the present disclosure, the AMF device may receive the no-coverage indication information, where the no-coverage indication information is used to indicate a no-signal coverage period before the terminal device obtains the next coverage of the satellite access network signal, and then the AMF device may perform mobility management for the terminal device according to the no-coverage indication information. Wherein, the mobility management specifically includes: the AMF device does not send a paging request message to the terminal device in a time period indicated by the no coverage indication information. Therefore, in the method provided by the disclosure, the AMF device does not send the paging request message to the terminal device in the no-signal coverage time period, so that the situation that the AMF device sends the paging request message to the terminal device in the no-signal coverage time period and the terminal device cannot receive the paging request message due to the no-signal coverage state is avoided, thereby causing the paging request message sent by the network device to fail and causing unnecessary message sending is avoided, signaling and system overhead of the network side are reduced, and energy consumption is saved.

Fig. 3 is a flowchart of a paging method provided in an embodiment of the present disclosure, where the method is performed by an AMF device, and as shown in fig. 3, the paging method may include the following steps:

Step 301, receiving no coverage indication information, where the no coverage indication information is used to indicate a no signal coverage period before the terminal device obtains a signal coverage of a next satellite access network, and the no coverage indication information is further used to indicate: the AMF device does not send a paging request message to the terminal device during the no-signal coverage period.

In one embodiment of the present disclosure, the difference between the present embodiment and the embodiment of fig. 2 described above is that the no coverage indication information in the present embodiment indicates, in addition to the no signal coverage period, that: the AMF device does not send a paging request message to the terminal device during the no-signal coverage period. In the embodiment of fig. 2, only the no-signal coverage period is indicated in the no-coverage indication information received by the AMF device, but not indicated: the AMF device does not send a paging request message to the terminal device during the no-signal coverage period.

Thus, in this embodiment, the AMF device specifically performs mobility management for the terminal device based on the indication of the no coverage indication information. In the embodiment of fig. 2, after the AMF device receives the no-coverage indication information indicating the no-signal coverage period, mobility management is performed for the terminal device directly according to the no-coverage indication information by default.

Further details regarding this step may be described with reference to the above embodiments.

Fig. 4 is a flowchart of a paging method provided in an embodiment of the present disclosure, where the method is performed by an AMF device, and as shown in fig. 4, the paging method may include the following steps:

Step 401, receiving a first eDRX parameter sent by a terminal device.

In one embodiment of the disclosure, the first eDRX parameter is a parameter that the terminal device requests authorization from the AMF device. In particular, in one embodiment of the present disclosure, the first eDRX parameter may include an eDRX period and a PTW.

And, in one embodiment of the present disclosure, the first eDRX parameter may be determined by the terminal device based on satellite ephemeris information of the currently accessed satellite and location information of the terminal device. How the terminal device determines the first eDRX parameter based on the satellite calendar information of the currently accessed satellite and the position information of the terminal device is described in detail in the following embodiments.

Further, in an embodiment of the present disclosure, the method for receiving the first eDRX parameter sent by the terminal device may include: and receiving a first eDRX parameter sent by the terminal equipment through a registration request or a registration update request.

In one embodiment of the present disclosure, the first eDRX parameter may be that the terminal device sends the first eDRX parameter to the AMF device when it is determined that a duration between a current time and an end time of signal coverage of the terminal device by a satellite access network used by the terminal device is less than a preset duration (i.e., that the terminal device is about to leave signal coverage of a current access satellite).

Or in another embodiment of the present disclosure, the first eDRX parameter may be sent to the AMF device at any time when the terminal device is in the period of signal coverage.

Fig. 5 is a flowchart of a paging method provided in an embodiment of the present disclosure, where the method is performed by an AMF device, and as shown in fig. 5, the paging method may include the following steps:

Step 501, an eDRX parameter is formulated or authorized for the terminal device according to the time period indicated by the non-coverage indication information, so as to determine a second eDRX parameter (i.e., an eDRX parameter authorized by the AMF device), and a registration success message or a registration update success message is sent to the terminal device. The registration success message or the registration update success message includes a second eDRX parameter.

And in an embodiment of the disclosure, the specific method for setting eDRX parameters for the terminal device according to the time period indicated by the no coverage indication information may be: and determining an eDRX parameter which is optimally adapted to the terminal equipment for the terminal equipment based on the time period indicated by the non-coverage indication information, wherein the eDRX period and the PTW in the eDRX parameter determined by the network equipment are optimally adapted to the terminal equipment. In particular, the above-mentioned best adaptation can be understood as: the eDRX period and PTW of the eDRX parameters should satisfy: the PTW is ensured to exist in the signal coverage time periods except the signal coverage-free time period so as to ensure that the terminal device can reach the signal coverage time period (namely, after the AMF device sends a message to the terminal device, the terminal device can respond to the message to the AMF device), and the paging is ensured to be reduced as much as possible in the signal coverage-free time period so as to avoid unnecessary network overhead.

Further, in an embodiment of the present disclosure, authorizing the eDRX parameter for the terminal device according to the time period indicated by the no coverage indication information to determine the second eDRX parameter may include: and performing eDRX parameter authorization based on the time period indicated by the non-coverage indication information and/or the first eDRX parameter to determine a second eDRX parameter. The specific method for determining the second eDRX parameter is described below by way of example, and the disclosure is merely a part of examples, but it is understood that a method for authorizing the eDRX parameter, which is not shown in the disclosure, is also within the scope of the disclosure.

Wherein, in one embodiment of the present disclosure, the method of performing eDRX parameter grant based on the time period indicated by the no coverage indication information and/or the first eDRX parameter to determine the second eDRX parameter may include at least one of:

the AMF device directly determines the first eDRX parameter as a second eDRX parameter authorized by the AMF device;

determining an eDRX parameter formulated by the AMF equipment as a second eDRX parameter authorized by the AMF equipment;

And modifying the first eDRX parameter requested by the terminal equipment based on the non-coverage indication information, and determining the modified eDRX parameter as a second eDRX parameter authorized by the AMF equipment.

It should be noted that, the foregoing formulation or authorization eDRX parameter is implemented by combining an AMF device with network elements such as SMF (SERVICE MANAGEMENT Function), UDM (Unified DATA MANAGEMENT ), PCF (Policy Control Function, policy control Function), and the like. The content of this part is the same as that of the prior art, and the embodiments of the present disclosure are not described herein.

Further, in one embodiment of the present disclosure, in response to the grant success, the AMF device may send a registration success message or a registration update success message to the terminal device, where the registration success message or the registration update success message includes a second eDRX parameter that the AMF device grants, so that the terminal device may enter an eDRX mechanism based on the second eDRX parameter to monitor only paging request messages within a PTW window of each eDRX cycle of the second eDRX parameter.

Fig. 6 is a flowchart of a paging method provided in an embodiment of the present disclosure, where the method is performed by an AMF device, and as shown in fig. 6, the paging method may include the following steps:

and step 601, sending a paging request message to the terminal equipment according to the second eDRX parameter and the non-coverage indication information.

Wherein, in an embodiment of the present disclosure, the method for sending a paging request message to a terminal device according to the second eDRX parameter and the no coverage indication information may include: and sending a paging request message to the terminal equipment in the PTW of the eDRX period of the second eDRX parameter in a time beyond the time period without the coverage indication information (namely, the terminal equipment is in the time period with the signal coverage), thereby avoiding that the AMF equipment sends the paging request message in the time period without the signal coverage, reducing signaling overhead and saving energy consumption, and realizing normal service communication between the terminal equipment and the AMF equipment in the time period with the signal coverage.

Further, in one embodiment of the present disclosure, after the AMF device sends the paging request message to the terminal device, the terminal device may initiate a service request procedure after receiving the paging request message, for activating the user plane connection so as to perform the service.

Fig. 7 is a flowchart of a paging method provided in an embodiment of the present disclosure, where the method is performed by a terminal device, and as shown in fig. 7, the paging method may include the following steps:

Step 701, sending no-coverage indication information to an AMF device, where the no-coverage indication information is used for indicating: the terminal device has no signal coverage time period before obtaining the next satellite access network signal coverage.

Wherein, in one embodiment of the present disclosure, the above non-coverage indication information may include at least one of the following information:

start time and end time of no satellite access network signal coverage.

And, the detailed description of the non-coverage indication information may refer to the related description in the above embodiments, which are not described herein.

In summary, in the paging method provided in the embodiment of the present disclosure, the terminal device may send, to the AMF device, no coverage indication information, where the no coverage indication information is used to indicate a no signal coverage period before the terminal device obtains a signal coverage of a next satellite access network, and then the AMF device may perform mobility management for the terminal device according to the no coverage indication information. Wherein, the mobility management specifically includes: the AMF device does not send a paging request message to the terminal device in a time period indicated by the no coverage indication information. Therefore, in the method provided by the disclosure, the AMF device does not send the paging request message to the terminal device in the no-signal coverage time period, so that the situation that the AMF device sends the paging request message to the terminal device in the no-signal coverage time period and the terminal device cannot receive the paging request message due to the no-signal coverage state is avoided, thereby causing the paging request message sent by the network device to fail and causing unnecessary message sending is avoided, signaling and system overhead of the network side are reduced, and energy consumption is saved.

Fig. 8 is a flowchart of a paging method provided in an embodiment of the present disclosure, where the method is performed by a terminal device, and as shown in fig. 8, the paging method may include the following steps:

Step 801, sending no-coverage indication information to the AMF device in response to the duration between the current time and the end time of signal coverage of the terminal device by the satellite access network used by the terminal device being less than a preset duration.

In one embodiment of the present disclosure, the terminal device may determine, according to the current satellite ephemeris information and the current location information of the terminal device, whether a duration between the current time and an end time of signal coverage of the terminal device by the satellite access network used by the terminal device is less than a preset duration.

And in one embodiment of the disclosure, in response to a duration between a current time and an end time of signal coverage of the terminal device by the satellite access network used by the terminal device being less than a preset duration, when the terminal device is about to leave the signal coverage of the satellite access network and enter no-signal coverage, no-coverage indication information may be sent to the AMF device, so that the AMF device may determine a no-signal coverage period before the terminal device obtains the signal coverage of the next satellite access network according to the no-coverage indication information.

The detailed description of the non-coverage indication information may refer to the related description in the above embodiments, and the embodiments of the disclosure are not described herein.

Fig. 9 is a flowchart of a paging method provided in an embodiment of the present disclosure, where the method is performed by a terminal device, and as shown in fig. 9, the paging method may include the following steps:

Step 901, sending no-coverage indication information to an AMF device, where the no-coverage indication information is used for indicating: the terminal device obtains no signal coverage time period before the next satellite access network signal coverage, and the no coverage indication information is further used for indicating: and not transmitting a paging request message to the terminal device in the no-signal coverage period.

For detailed descriptions of other contents in this embodiment, reference may be made to the related descriptions in the above embodiments, and the embodiments of the disclosure are not described herein.

In summary, in the paging method provided in the embodiment of the present disclosure, the terminal device may send, to the AMF device, no coverage indication information, where the no coverage indication information is used to indicate a no signal coverage period before the terminal device obtains a signal coverage of a next satellite access network, and then the AMF device performs mobility management for the terminal device according to the no coverage indication information. Wherein, the mobility management specifically includes: the AMF device does not send a paging request message to the terminal device in a time period indicated by the no coverage indication information. Therefore, in the method provided by the disclosure, the AMF device does not send the paging request message to the terminal device in the no-signal coverage time period, so that the situation that the AMF device sends the paging request message to the terminal device in the no-signal coverage time period and the terminal device cannot receive the paging request message due to the no-signal coverage state is avoided, thereby causing the paging request message sent by the network device to fail and causing unnecessary message sending is avoided, signaling and system overhead of the network side are reduced, and energy consumption is saved.

Fig. 10 is a flowchart of a paging method provided in an embodiment of the present disclosure, where the method is performed by a terminal device, and as shown in fig. 10, the paging method may include the following steps:

Step 1001, sending a first eDRX parameter to an AMF device.

Wherein, in one embodiment of the present disclosure, the first eDRX parameter is a parameter that the terminal device requests authorization from the AMF device.

And, in one embodiment of the present disclosure, the method for transmitting the first eDRX parameter to the AMF device may include: and sending a registration request or a registration update request to the AMF device, wherein the registration request or the registration update request comprises the first eDRX parameter and/or the no-coverage indication information.

In one embodiment of the present disclosure, the first eDRX parameter may be sent to the AMF device when the terminal device determines that a duration between a current time and an end time of signal coverage of the terminal device by a satellite access network used by the terminal device is less than a preset duration (i.e., signal coverage of the terminal device about to leave a current access satellite).

Step 1002, receiving a second eDRX parameter sent by an AMF device.

In one embodiment of the disclosure, the method for receiving the second eDRX parameter sent by the AMF device may include: and receiving a second eDRX parameter sent by the AMF device through a registration success message or a registration update success message.

Fig. 11a is a flowchart of a paging method provided in an embodiment of the present disclosure, where the method is performed by a terminal device, and as shown in fig. 11a, the paging method may include the following steps:

Step 1101a, acquiring satellite ephemeris information in response to the terminal device accessing the satellite access network.

In one embodiment of the present disclosure, after the terminal device accesses the satellite access network, the terminal device may acquire satellite ephemeris information through a broadcast message.

Step 1102a, determining satellite coverage information corresponding to the terminal device based on the satellite ephemeris information and the position information of the terminal device.

Wherein, in one embodiment of the disclosure, the satellite coverage information is used to indicate at least one of: the time of signal coverage, the time of losing signal coverage, the time of no signal coverage, the time of next signal coverage;

The location information of the terminal device indicates the current location of the terminal device and/or a predicted location of the terminal device at a predetermined time (e.g., a predicted location at a future time).

Step 1103a, determining a first eDRX parameter according to the satellite coverage information.

Fig. 11b is a flowchart of a paging method provided in an embodiment of the present disclosure, where the method is performed by a terminal device, and as shown in fig. 11b, the paging method may include the following steps:

Step 1101b, acquiring satellite ephemeris information in response to the terminal device accessing the satellite access network.

Step 1102b, determining satellite coverage information corresponding to the terminal device based on the satellite ephemeris information and the position information of the terminal device.

Step 1103b, determining no coverage indication information according to the satellite coverage information.

Wherein in one embodiment of the disclosure, the determining the no coverage indication information according to the satellite coverage information includes:

Determining the time of losing satellite signal coverage as a start time of the satellite-free access network signal coverage;

determining the duration of the signal coverage of the satellite-free access network as the duration of the signal coverage of the satellite-free access network;

The paging assistance indication information is determined based on a start time of the non-satellite access network signal coverage and a duration of the non-satellite access network signal coverage.

Or in another embodiment of the disclosure, the determining the no coverage indication information according to the satellite coverage information includes:

Rounding up or rounding down the quotient of the duration without signal coverage and the eDRX period to obtain the preset value;

The no coverage indication information is determined based on the start time of the no satellite access network signal coverage and the predetermined value.

Or in still another embodiment of the present disclosure, the determining the no coverage indication information according to the satellite coverage information includes:

determining the time of starting satellite signal coverage next as the ending time of the satellite-free access network signal coverage;

Determining the no-coverage indication information based on a start time of the no-satellite access network signal coverage and an end time of the no-satellite access network signal coverage.

For detailed descriptions of satellite coverage information, reference may be made to the related descriptions in the above embodiments, and the embodiments of the disclosure are not described herein.

Fig. 12 is a flowchart of a paging method provided in an embodiment of the present disclosure, where the method is performed by a terminal device, and as shown in fig. 12, the paging method may include the following steps:

step 1201, monitor paging request message.

In one embodiment of the disclosure, the method for monitoring the paging request message may include: and monitoring a paging request message based on the second eDRX parameter. Specifically, in one embodiment of the present disclosure, the terminal device may monitor the PTW of the eDRX cycle of the second eDRX parameter for the paging request message at a time outside the period of time indicated by the no coverage indication information (i.e., the terminal device is in the period of time with signal coverage).

Fig. 13 is a flowchart of a paging method provided in an embodiment of the present disclosure, where the method is performed by at least one of an access network device, NWDAF network elements, and an application server capable of acquiring satellite ephemeris information, and as shown in fig. 13, the paging method may include the following steps:

step 1301, sending no coverage indication information to an AMF device, where the no coverage indication information is used for indicating: the terminal device has no signal coverage time period before obtaining the next satellite access network signal coverage.

start time and end time of no satellite access network signal coverage.

In summary, in the paging method provided by the embodiment of the present disclosure, at least one of the access network device, NWDAF network element, and the application server capable of acquiring satellite ephemeris information may send no-coverage indication information to the AMF device, where the no-coverage indication information is used to indicate a no-signal coverage period before the terminal device acquires the next satellite access network signal coverage, and then the AMF device may perform mobility management for the terminal device according to the no-coverage indication information. Wherein, the mobility management specifically includes: the AMF device does not send a paging request message to the terminal device in a time period indicated by the no coverage indication information. Therefore, in the method provided by the disclosure, the AMF device does not send the paging request message to the terminal device in the no-signal coverage time period, so that the situation that the AMF device sends the paging request message to the terminal device in the no-signal coverage time period and the terminal device cannot receive the paging request message due to the no-signal coverage state is avoided, thereby causing the paging request message sent by the network device to fail and causing unnecessary message sending is avoided, signaling and system overhead of the network side are reduced, and energy consumption is saved.

Fig. 14a is a flowchart of a paging method provided in an embodiment of the present disclosure, where the method is performed by at least one of an access network device, NWDAF network elements, and an application server capable of acquiring satellite ephemeris information, and as shown in fig. 14a, the paging method may include the following steps:

step 1401a, acquiring satellite ephemeris information in response to the terminal device accessing the satellite access network.

Step 1402a, determining satellite coverage information corresponding to the terminal device based on the satellite ephemeris information and the location information of the terminal device.

Wherein, in one embodiment of the disclosure, the satellite coverage information is used to indicate at least one of: the time of signal coverage, the time of losing signal coverage, the time of no signal coverage, the time of next signal coverage; the location information of the terminal device indicates the current location of the terminal device and/or a predicted location of the terminal device at a predetermined time.

Step 1403a, determining no coverage indication information according to the satellite coverage information.

The detailed descriptions of steps 1401a to 1403a may refer to the related descriptions in the above embodiments, and the embodiments of the disclosure are not described herein.

Based on the above description, fig. 14b is an interaction flow chart of a paging method according to an embodiment of the disclosure, as shown in fig. 14b, specifically may include the following steps:

In step 1401b, the UE (User Equipment) (i.e. the aforementioned terminal device) uses a satellite access to access a network (e.g. a 5GC network), and the satellite access broadcasts ephemeris information of the UE currently using the satellite access through a broadcast message.

Step 1402b, the UE receives and stores ephemeris information.

Step 1403b, according to the ephemeris information and the current location information of the UE, determining that the area where the UE is located is about to lose signal coverage of the current satellite access (i.e. the duration between the current time and the end time of signal coverage of the terminal device by the satellite access network used by the terminal device is less than the preset duration).

Step 1404b, the UE decides to use the eDRX power saving mechanism according to the ephemeris information and the UE current location information, and determines eDRX power saving parameters (i.e. the first eDRX parameter described above), where the eDRX power saving parameters include eDRX cycle, PTW, etc.; and meanwhile, determining auxiliary indication information (namely the non-coverage indication information) according to the ephemeris information and combining the determined eDRX power saving parameters.

Wherein, in one embodiment of the present disclosure, the auxiliary indication information (i.e. no coverage indication information) may include at least one of the following information:

satellite no coverage start time and no coverage duration information (i.e., the start time of no satellite access network signal coverage and the duration of no satellite access network signal coverage described above);

Satellite non-coverage start time and a counter, wherein the counter indicates that the non-satellite signal coverage duration of the area where the UE is located is a multiple of the eDRX period (namely, the start time of the non-satellite access network signal coverage and a preset value, and the preset value is a value obtained by rounding up or rounding down the quotient of the duration of the non-satellite access network signal coverage and the eDRX period of the first eDRX parameter or the second eDRX parameter);

Satellite no coverage start time and satellite no coverage end time (i.e., the start time and end time of no satellite access network signal coverage described above).

In step 1405b, the UE determines that the current satellite access signal coverage is about to be left, triggers to initiate a registration update request, and the request message includes eDRX power saving parameters and auxiliary indication information.

In step 1406b, when the AMF receives the registration request, it knows that the UE uses satellite access, and grants the UE according to the eDRX request value (i.e. the second eDRX parameter).

And 1407b, AMF and other flows needed by registration update among network elements such as SMF, UDM, PCF and the like are completed.

Step 1408b, the AMF receives the registration update and returns a registration accept message (i.e., the registration success message or the registration update success message described above) to the UE, wherein the registration accept message includes the authorized eDRX parameter (i.e., the second eDRX parameter described above).

In step 1409b, the UE enters the power saving state according to the eDRX parameter (i.e., the second eDRX parameter), and the AMF determines that the UE enters the power saving state according to the parameter (i.e., the second eDRX parameter).

In step 1410b, during the PTW period of eDRX cycle, the AMF still initiates paging request to the UE as needed (the UE is still within the signal coverage of the current satellite access at this time).

In step 1411b, the UE receives the paging request, and initiates a service request flow for activating the user plane connection so as to perform the service.

Step 1412b, according to the ephemeris information and the user position, the UE enters a no-signal coverage state of the current satellite access.

In step 1413b, the UE enters the power saving state according to the eDRX parameter (i.e., the second eDRX parameter), and the AMF determines that the UE enters the power saving state according to the parameter (i.e., the second eDRX parameter).

Step 1414b, AMF judges that the UE has entered the period of no signal coverage of satellite access at this time according to the auxiliary indication information.

The AMF does not send a paging message to the UE during the period indicated by the assistance indication information (i.e., during the period indicated by the no coverage indication information in the above embodiment). Or the indication information indicates that the UE enters a no-signal coverage period of satellite access, the AMF starts a counter (i.e. a predetermined value in the above embodiment), and after each eDRX period, the counter is decremented by 1, and when a new eDRX period after the value becomes 0 starts, the AMF initiates a paging request in the PTW period.

Step 1415b, the current satellite access resumes signal coverage to the UE again.

Step 1416b, AMF may initiate a paging request to the UE within the PTW per eDRX cycle, as per 1410b-1411b described above. And the UE receives the paging request and initiates a service request flow for activating user plane connection so as to develop service.

Fig. 15 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure, where, as shown in fig. 15, the device may include:

a receiving module 1501 for receiving no coverage indication information; the coverage-free indication information is used for indicating a signal coverage-free time period before the terminal equipment obtains the next satellite access network signal coverage;

A management module 1502 is configured to perform mobility management for the terminal device according to the no coverage indication information.

In summary, in the communication apparatus provided by the embodiments of the present disclosure, the AMF device may receive the no-coverage indication information, where the no-coverage indication information is used to indicate a no-signal coverage period before the terminal device obtains the next coverage of the satellite access network signal, and then the AMF device may perform mobility management for the terminal device according to the no-coverage indication information. Wherein, the mobility management specifically includes: the AMF device does not send a paging request message to the terminal device in a time period indicated by the no coverage indication information. Therefore, in the method provided by the disclosure, the AMF device does not send the paging request message to the terminal device in the no-signal coverage time period, so that the situation that the AMF device sends the paging request message to the terminal device in the no-signal coverage time period and the terminal device cannot receive the paging request message due to the no-signal coverage state is avoided, thereby causing the paging request message sent by the network device to fail and causing unnecessary message sending is avoided, signaling and system overhead of the network side are reduced, and energy consumption is saved.

Optionally, in one embodiment of the disclosure, the no coverage indication information is further used to indicate: the AMF device does not send a paging request message to the terminal device during the no-signal coverage period.

Optionally, in one embodiment of the disclosure, the management module 1502 is further configured to:

And not sending the paging request message to the terminal equipment in the time period indicated by the no coverage indication information.

Optionally, in an embodiment of the disclosure, the receiving module 1501 is further configured to:

receiving non-coverage indication information sent by terminal equipment;

receiving non-coverage indication information sent by access network equipment;

receiving NWDAF non-coverage indication information sent by a network element;

Optionally, in an embodiment of the disclosure, the apparatus is further configured to:

And receiving a first eDRX parameter sent by the terminal equipment, wherein the first eDRX parameter is a parameter of the terminal equipment requesting authorization from the AMF equipment.

And receiving a registration request or a registration update request sent by the terminal equipment, wherein the registration request or the registration update request comprises the first eDRX parameter and/or the coverage-free indication information.

And formulating or authorizing eDRX parameters for the terminal equipment according to the time period indicated by the non-coverage indication information.

And in response to the authorization success, sending a registration success message or a registration update success message to the terminal equipment, wherein the registration success message or the registration update success message comprises a second eDRX parameter authorized by the AMF equipment.

at times other than the time period indicated by the no coverage indication information, a paging request message may be transmitted to the terminal device in a paging time window PTW of the eDRX cycle of the second eDRX parameter.

Optionally, in one embodiment of the disclosure, the no coverage indication information includes at least one of:

start time and end time of no satellite access network signal coverage.

Fig. 16 is a schematic structural diagram of a communication device according to an embodiment of the disclosure, where, as shown in fig. 16, the device may include:

A sending module 1601, configured to send no coverage indication information to an AMF device; wherein, no coverage indication information is used for indicating: the terminal device has no signal coverage time period before obtaining the next satellite access network signal coverage.

In summary, in the communication apparatus provided in the embodiments of the present disclosure, the terminal device may send, to the AMF device, no-coverage indication information, where the no-coverage indication information is used to indicate a no-signal coverage period before the terminal device obtains a signal coverage of a next satellite access network, and then the AMF device may perform mobility management for the terminal device according to the no-coverage indication information. Wherein, the mobility management specifically includes: the AMF device does not send a paging request message to the terminal device in a time period indicated by the no coverage indication information. Therefore, in the method provided by the disclosure, the AMF device does not send the paging request message to the terminal device in the no-signal coverage time period, so that the situation that the AMF device sends the paging request message to the terminal device in the no-signal coverage time period and the terminal device cannot receive the paging request message due to the no-signal coverage state is avoided, thereby causing the paging request message sent by the network device to fail and causing unnecessary message sending is avoided, signaling and system overhead of the network side are reduced, and energy consumption is saved.

And sending non-coverage indication information to the AMF equipment in response to the fact that the duration between the current time and the end time of signal coverage of the terminal equipment by the satellite access network used by the terminal equipment is smaller than the preset duration.

Optionally, in one embodiment of the disclosure, the no coverage indication information is further used to indicate: the AMF device does not send a paging request message to the terminal device in the no-signal coverage time period.

and receiving an authorized second eDRX parameter sent by the AMF equipment.

Determining satellite coverage information corresponding to the terminal equipment based on the satellite ephemeris information and the position information of the terminal equipment; wherein the satellite coverage information is used to indicate at least one of: the time of signal coverage, the time of losing signal coverage, the time of no signal coverage, the time of next signal coverage; the position information of the terminal equipment indicates the current position of the terminal equipment and/or the predicted position of the terminal equipment at a preset time;

determining a first eDRX parameter according to the satellite coverage information;

And determining non-coverage indication information according to the satellite coverage information.

and sending a registration request or a registration update request to the AMF device, wherein the registration request or the registration update request comprises the first eDRX parameter and/or the no-coverage indication information.

and receiving a second eDRX parameter sent by the AMF device through a registration success message or a registration update success message.

and monitoring the paging request message.

And in response to receiving the registration success message or the registration update success message sent by the AMF device, monitoring the paging request message based on a second eDRX parameter authorized by the AMF device contained in the registration success message or the registration update success message.

The paging request message may be monitored in the PTW of the eDRX cycle of the second eDRX parameter at a time other than the time period indicated by the no coverage indication information.

start time and end time of no satellite access network signal coverage.

Fig. 17a is a schematic structural diagram of a communication device according to an embodiment of the disclosure, where, as shown in fig. 17a, the device may include:

A sending module 1701a, configured to send no-coverage indication information to an AMF device; wherein, no coverage indication information is used for indicating: the terminal device has no signal coverage time period before obtaining the next satellite access network signal coverage.

determining satellite coverage information corresponding to the terminal equipment based on the satellite ephemeris information and the position information of the terminal equipment; wherein the satellite coverage information is used to indicate at least one of: the time of signal coverage, the time of losing signal coverage, the time of no signal coverage, the time of next signal coverage; the position information of the terminal equipment indicates the current position of the terminal equipment and/or the predicted position of the terminal equipment at the preset time;

start time and end time of no satellite access network signal coverage.

Fig. 17b is a schematic structural diagram of a core network system according to an embodiment of the disclosure, where, as shown in fig. 17b, the system may include:

NWDAF a network element 1701b, configured to send no-coverage indication information to an AMF device; wherein, no coverage indication information is used for indicating: the terminal equipment obtains a signal coverage-free time period before the next satellite access network signal coverage;

the AMF device 1702b, configured to receive no-coverage indication information;

The AMF device 1702b is further configured to perform mobility management for the terminal device according to the no coverage indication information.

Optionally, in an embodiment of the present disclosure, the NWDAF network element 1701b is further configured to:

start time and end time of no satellite access network signal coverage.

Optionally, in an embodiment of the disclosure, the AMF device 1702b is further configured to:

And receiving a first extended discontinuous reception eDRX parameter sent by the terminal equipment, wherein the first eDRX parameter is a parameter for requesting authorization from the AMF equipment by the terminal equipment.

The embodiment of the disclosure also provides a communication system for executing the method in any of fig. 1-6.

Optionally, the communication system may include:

The terminal equipment is used for sending the non-coverage indication information to the AMF equipment; wherein, no coverage indication information is used for indicating: the terminal equipment obtains a signal coverage-free time period before the next satellite access network signal coverage; and/or at least one of access network equipment, NWDAF network elements and an application server capable of acquiring satellite ephemeris information is used for sending non-coverage indication information to the AMF equipment;

Optionally, in an embodiment of the present disclosure, the terminal device is further configured to:

and receiving an authorized second eDRX parameter sent by the AMF equipment.

Sending a registration request or a registration update request to AMF equipment, wherein the registration request or the registration update request comprises a first eDRX parameter and/or non-coverage indication information;

and monitoring the paging request message.

and monitoring a paging request message based on the second eDRX parameter.

Monitoring a paging request message in the PTW of the eDRX cycle of the second eDRX parameter at a time other than the time period indicated by the no coverage indication information; the paging request message is not monitored for a period of time indicated by the no coverage indication information.

Optionally, in one embodiment of the disclosure, in response to the no coverage indication information being sent by the terminal device, the no coverage indication information includes at least one of:

start time and end time of no satellite access network signal coverage.

Optionally, in an embodiment of the disclosure, the AMF device is further configured to:

Optionally, in an embodiment of the disclosure, the AMF device is further configured to at least one of:

receiving non-coverage indication information sent by terminal equipment;

receiving non-coverage indication information sent by access network equipment;

Receiving non-coverage indication information sent by a network element of the network data analysis function NWDAF;

Optionally, in an embodiment of the present disclosure, at least one of the NWDAF network element, the access network device, and the application server capable of acquiring satellite ephemeris information is further configured to:

Optionally, in one embodiment of the disclosure, in response to the no coverage indication information being sent by at least one of NWDAF network element, access network device, application server capable of acquiring satellite ephemeris information, the no coverage indication information includes at least one of:

start time and end time of no satellite access network signal coverage.

Referring to fig. 18, fig. 18 is a schematic structural diagram of a communication device 1800 according to an embodiment of the application. The communication apparatus 1800 may be a network device, a terminal device, a chip system, a processor, or the like that supports the network device to implement the above method, or a chip, a chip system, a processor, or the like that supports the terminal device to implement the above method. The device can be used for realizing the method described in the method embodiment, and can be particularly referred to the description in the method embodiment.

The communication device 1800 may include one or more processors 1801. The processor 1801 may be a general-purpose processor or a special-purpose processor, or the like. For example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication devices (e.g., base stations, baseband chips, terminal equipment chips, DUs or CUs, etc.), execute computer programs, and process data of the computer programs.

Optionally, the communication device 1800 may further include one or more memories 1802, on which a computer program 1804 may be stored, the processor 1801 executing the computer program 1804 to cause the communication device 1800 to perform the methods described in the method embodiments above. Optionally, the memory 1802 may also store data therein. The communications device 1800 and the memory 1802 can be provided separately or can be integrated.

Optionally, the communication device 1800 may also include a transceiver 1805, an antenna 1806. The transceiver 1805 may be referred to as a transceiver unit, a transceiver circuit, or the like, for implementing a transceiver function. The transceiver 1805 may include a receiver, which may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

Optionally, one or more interface circuits 1807 may also be included in the communication device 1800. The interface circuit 1807 is configured to receive code instructions and transmit the code instructions to the processor 1801. The processor 1801 executes the code instructions to cause the communication device 1800 to perform the methods described in the method embodiments above.

The communication apparatus 1800 is a terminal device: transceiver 1805 is used to perform steps 301-302 of fig. 3; steps 401 to 402 in fig. 4; steps 501 to 503 in fig. 5; step 601a to step 603a in fig. 6 a; step 601b to step 602b in fig. 6 b. The processor 1801 is configured to perform step 201 in fig. 2; step 303-step 304 in fig. 3; step 403 in fig. 4; step 504 and step 505 in fig. 5; step 604a in fig. 6 a; step 603b in fig. 6 b; step 701-step 702 in fig. 7.

The communication apparatus 1800 is a network device: the transceiver 1805 is used to perform step 1102a in fig. 11 a. The processor 1801 is configured to perform step 801 in fig. 8; steps 901 to 904 in fig. 9; step 1001 to step 1005 in fig. 10; step 1101a in fig. 11 a; step 1101b and step 1102b in fig. 11 b.

In one implementation, a transceiver for implementing the receive and transmit functions may be included in the processor 1801. For example, the transceiver may be a transceiver circuit, or an interface circuit. The transceiver circuitry, interface or interface circuitry for implementing the receive and transmit functions may be separate or may be integrated. The transceiver circuit, interface or interface circuit may be used for reading and writing codes/data, or the transceiver circuit, interface or interface circuit may be used for transmitting or transferring signals.

In one implementation, the processor 1801 may have a computer program 1803 stored thereon, the computer program 1803 running on the processor 1801 may cause the communications device 1800 to perform the methods described in the method embodiments above. The computer program 1803 may be solidified in the processor 1801, in which case the processor 1801 may be implemented by hardware.

In one implementation, the communication device 1800 may include circuitry that may implement the functions of transmitting or receiving or communicating in the foregoing method embodiments. The processors and transceivers described in this disclosure may be implemented on integrated circuits (INTEGRATED CIRCUIT, ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application SPECIFIC INTEGRATED Circuits (ASICs), printed circuit boards (printed circuit board, PCBs), electronic devices, and the like. The processor and transceiver may also be fabricated using a variety of IC process technologies such as complementary metal oxide semiconductor (complementary metal oxide semiconductor, CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication apparatus described in the above embodiment may be a network device or a terminal device, but the scope of the communication apparatus described in the present application is not limited thereto, and the structure of the communication apparatus may not be limited by fig. 18. The communication means may be a stand-alone device or may be part of a larger device. For example, the communication device may be:

(1) A stand-alone integrated circuit IC, or chip, or a system-on-a-chip or subsystem;

(2) A set of one or more ICs, optionally including storage means for storing data, a computer program;

(3) An ASIC, such as a Modem (Modem);

(4) Modules that may be embedded within other devices;

(5) A receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligent device, and the like;

(6) Others, and so on.

For the case where the communication device may be a chip or a chip system, reference may be made to the schematic structural diagram of the chip shown in fig. 19. The chip shown in fig. 19 includes a processor 1901 and an interface 1902. Wherein the number of processors 1901 may be one or more, and the number of interfaces 1902 may be a plurality.

Optionally, the chip further comprises a memory 1903, the memory 1903 being used for storing the necessary computer programs and data.

Those of skill in the art will further appreciate that the various illustrative logical blocks (illustrative logical block) and steps (steps) described in connection with the embodiments of the application may be implemented by electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Those skilled in the art may implement the described functionality in varying ways for each particular application, but such implementation is not to be understood as beyond the scope of the embodiments of the present application.

The application also provides a readable storage medium having stored thereon instructions which when executed by a computer perform the functions of any of the method embodiments described above.

The application also provides a computer program product which, when executed by a computer, implements the functions of any of the method embodiments described above.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer programs. When the computer program is loaded and executed on a computer, the flow or functions according to the embodiments of the present application are fully or partially produced. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer program may be stored in or transmitted from one computer readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means from one website, computer, server, or data center. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a solid-state disk (solid-state drive STATE DISK, SSD)), or the like.

Those of ordinary skill in the art will appreciate that: the first, second, etc. numbers referred to in the present application are merely for convenience of description and are not intended to limit the scope of the embodiments of the present application, but also to indicate the sequence.

At least one of the present application may also be described as one or more, and a plurality may be two, three, four or more, and the present application is not limited thereto. In the embodiment of the application, for a technical feature, the technical features of the technical feature are distinguished by a first, a second, a third, a, B, a C, a D and the like, and the technical features described by the first, the second, the third, the a, the B, the C, the D are not in sequence or in order of magnitude.

The correspondence relation shown in each table in the application can be configured or predefined. The values of the information in each table are merely examples, and may be configured as other values, and the present application is not limited thereto. In the case of the correspondence between the configuration information and each parameter, it is not necessarily required to configure all the correspondence shown in each table. For example, in the table of the present application, the correspondence relation shown by some rows may not be configured. For another example, appropriate morphing adjustments, e.g., splitting, merging, etc., may be made based on the tables described above. The names of the parameters indicated in the tables may be other names which are understood by the communication device, and the values or expressions of the parameters may be other values or expressions which are understood by the communication device. When the tables are implemented, other data structures may be used, for example, an array, a queue, a container, a stack, a linear table, a pointer, a linked list, a tree, a graph, a structure, a class, a heap, a hash table, or a hash table.

Predefined in the present application may be understood as defining, predefining, storing, pre-negotiating, pre-configuring, curing, or pre-sintering.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A paging method, performed by an AMF device, comprising:

Receiving non-coverage indication information; the coverage-free indication information is used for indicating a coverage-free time period before the terminal equipment obtains the next satellite access network signal coverage;

And executing mobility management for the terminal equipment according to the non-coverage indication information.
The method of claim 1, wherein the no coverage indication information is further used to indicate: and the AMF equipment does not send a paging request message to the terminal equipment in the no-signal coverage time period.
The method according to claim 1 or 2, wherein said performing mobility management for the terminal device according to the no coverage indication information comprises:

And not sending a paging request message to the terminal equipment in the time period indicated by the non-coverage indication information.
The method of claim 1, wherein the receiving no coverage indication information comprises at least one of:

receiving the non-coverage indication information sent by the terminal equipment;

Receiving the non-coverage indication information sent by access network equipment;

Receiving the non-coverage indication information sent by the network element of the network data analysis function NWDAF;

and receiving the non-coverage indication information sent by the application server capable of acquiring the satellite ephemeris information.
The method of claim 1, wherein the method further comprises:

And receiving a first extended discontinuous reception eDRX parameter sent by the terminal equipment, wherein the first eDRX parameter is a parameter of the terminal equipment requesting authorization from the AMF equipment.
The method of claim 5, wherein receiving first eDRX parameters and/or no coverage indication information sent by a terminal device comprises:

and receiving a registration request or a registration update request sent by the terminal equipment, wherein the registration request or the registration update request comprises the first eDRX parameter and/or non-coverage indication information.
The method of claim 6, wherein the method further comprises:

And setting or authorizing eDRX parameters for the terminal equipment according to the time period indicated by the non-coverage indication information.
The method of claim 7, wherein authorizing the eDRX parameter for the terminal device according to the time period indicated by the no coverage indication information comprises:

performing eDRX parameter authorization based on the time period indicated by the non-coverage indication information and/or the first eDRX parameter to determine a second eDRX parameter;

And responding to the success of the authorization, sending a registration success message or a registration update success message to the terminal equipment, wherein the registration success message or the registration update success message comprises a second eDRX parameter authorized by the AMF equipment.
The method of claim 8, wherein the method further comprises:

And sending a paging request message to the terminal equipment according to the second eDRX parameter and the non-coverage indication information.
The method of claim 9, wherein the sending the paging request message to the terminal device according to the second eDRX parameter and no coverage indication information comprises:

the paging request message may be transmitted to the terminal device in a paging time window PTW of an eDRX cycle of the second eDRX parameter at a time other than the time period indicated by the no coverage indication information.
The method according to any of claims 8 to 10, wherein the no coverage indication information comprises at least one of the following information:

start time of no satellite access network signal coverage and duration of no satellite access network signal coverage;

a start time of no satellite access network signal coverage and a predetermined value, the predetermined value being: a value obtained by rounding up or rounding down the quotient of the duration without satellite access network signal coverage and the eDRX period of the first eDRX parameter or the second eDRX parameter;

start time and end time of no satellite access network signal coverage.
A paging method, performed by a terminal device, comprising:

Sending non-coverage indication information to AMF equipment; wherein, the no coverage indication information is used for indicating: the terminal device has no signal coverage time period before obtaining the next satellite access network signal coverage.
The method of claim 12, wherein the method further comprises:

And sending the non-coverage indication information to the AMF equipment in response to the fact that the duration between the current time and the end time of signal coverage of the terminal equipment by the satellite access network used by the terminal equipment is smaller than the preset duration.
The method of claim 12, wherein the no coverage indication information is further used to indicate: and the AMF equipment does not send a paging request message to the terminal equipment in the no-signal coverage time period.
The method of claim 12, wherein the method further comprises:

sending a first eDRX parameter to AMF equipment, wherein the first eDRX parameter is a parameter for requesting authorization from the AMF equipment by the terminal equipment;

and receiving an authorized second eDRX parameter sent by the AMF equipment.
The method of claim 15, wherein the method further comprises:

responding to the access of the terminal equipment to a satellite access network, and acquiring satellite ephemeris information;

Determining satellite coverage information corresponding to the terminal equipment based on the satellite ephemeris information and the position information of the terminal equipment; wherein the satellite coverage information is used to indicate at least one of: the time of signal coverage, the time of losing signal coverage, the time of no signal coverage, the time of next signal coverage; the position information of the terminal equipment indicates the current position of the terminal equipment and/or the predicted position of the terminal equipment at preset time;

determining the first eDRX parameter according to the satellite coverage information;

and determining the non-coverage indication information according to the satellite coverage information.
The method of claim 15, wherein transmitting the first eDRX parameter and/or no coverage indication information to an AMF device comprises:

sending a registration request or a registration update request to the AMF equipment, wherein the registration request or the registration update request comprises the first eDRX parameter and/or non-coverage indication information;

the receiving the authorized second eDRX parameter sent by the AMF device includes:

and receiving a second eDRX parameter which is sent by the AMF device through a registration success message or a registration update success message.
The method of claim 15, wherein the method further comprises:

and monitoring the paging request message.
The method of claim 18, wherein the listening for paging request messages comprises:

and monitoring a paging request message based on the second eDRX parameter.
The method of claim 19, wherein the listening for paging request messages based on the second eDRX parameter comprises:

Monitoring the paging request message in the PTW of the eDRX period of the second eDRX parameter at a time except for the time period indicated by the non-coverage indication information; and not monitoring the paging request message in the time period indicated by the non-coverage indication information.
The method according to any of claims 15-20, wherein the no coverage indication information comprises at least one of the following:

start time of no satellite access network signal coverage and duration of no satellite access network signal coverage;

a start time of no satellite access network signal coverage and a predetermined value, the predetermined value being: a value obtained by rounding up or rounding down the quotient of the duration without satellite access network signal coverage and the eDRX period of the first eDRX parameter or the second eDRX parameter;

start time and end time of no satellite access network signal coverage.
A paging method, performed by at least one of an access network device, NWDAF network element, and an application server capable of acquiring satellite ephemeris information, comprising:

Sending non-coverage indication information to AMF equipment; wherein, the no coverage indication information is used for indicating: the terminal device has no signal coverage time period before obtaining the next satellite access network signal coverage.
The method of claim 22, wherein the method further comprises:

responding to the access of the terminal equipment to a satellite access network, and acquiring satellite ephemeris information;

Determining satellite coverage information corresponding to the terminal equipment based on the satellite ephemeris information and the position information of the terminal equipment; wherein the satellite coverage information is used to indicate at least one of: the time of signal coverage, the time of losing signal coverage, the time of no signal coverage, the time of next signal coverage; the position information of the terminal equipment indicates the current position of the terminal equipment and/or the predicted position of the terminal equipment at preset time;

and determining the non-coverage indication information according to the satellite coverage information.
The method of claim 22, wherein the no coverage indication information comprises at least one of:

start time of no satellite access network signal coverage and duration of no satellite access network signal coverage;

start time and end time of no satellite access network signal coverage.
A communication apparatus configured in an AMF device, comprising:

The receiving module is used for receiving the non-coverage indication information; the coverage-free indication information is used for indicating a coverage-free time period before the terminal equipment obtains the next satellite access network signal coverage;

And the management module is used for executing mobility management for the terminal equipment according to the non-coverage indication information.
A communication apparatus configured in a terminal device, comprising:

The sending module is used for sending the non-coverage indication information to the AMF equipment; wherein, the no coverage indication information is used for indicating: the terminal device has no signal coverage time period before obtaining the next satellite access network signal coverage.
A communications apparatus configured in at least one of an access network device, NWDAF network element, and an application server capable of acquiring satellite ephemeris information, comprising:

The sending module is used for sending the non-coverage indication information to the AMF equipment; wherein, the no coverage indication information is used for indicating: the terminal device has no signal coverage time period before obtaining the next satellite access network signal coverage.
A communication device, characterized in that the device comprises a processor and a memory, wherein the memory has stored therein a computer program, which processor executes the computer program stored in the memory to cause the device to perform the method according to any one of claims 1 to 11, or the processor executes the computer program stored in the memory to cause the device to perform the method according to any one of claims 12 to 21, or the processor executes the computer program stored in the memory to cause the device to perform the method according to any one of claims 22 to 24.
A communication device, comprising: processor and interface circuit, wherein

The interface circuit is used for receiving code instructions and transmitting the code instructions to the processor;

The processor for executing the code instructions to perform the method of any one of claims 1 to 11, or for executing the code instructions to perform the method of any one of claims 12 to 21, or for executing the code instructions to perform the method of any one of claims 22 to 24.
A computer readable storage medium storing instructions which, when executed, cause the method of any one of claims 1 to 11 to be implemented, or which, when executed, cause the method of any one of claims 12 to 21 to be implemented, or which, when executed, cause the method of any one of claims 22 to 24 to be implemented.
A core network system, comprising an AMF device and NWDAF network elements, characterized in that:

The NWDAF network element is configured to send non-coverage indication information to an AMF device; wherein, the no coverage indication information is used for indicating: the terminal equipment obtains a signal coverage-free time period before the next satellite access network signal coverage;

the AMF device is used for receiving the non-coverage indication information;

The AMF device is further configured to perform mobility management for the terminal device according to the coverage-free indication information.
A communication system, characterized in that the system is arranged to perform the method according to any of claims 1-11.