Paging method and apparatus, and network side device

Abstract

A paging method and apparatus and a network side device, relating to the technical field of communications. The paging method comprises: an access network device receives a paging message, the paging message carrying paging region information, and the paging region information being used for indicating a tracking region of paging; and on the basis of the first information, the access network device determines a behavior of paging a terminal in a target cell, wherein the first information comprises at least one of the following: first time-related information, the first time-related information being used for indicating the time when the target cell belongs to the tracking region of paging; and first region area-related information, the first region area-related information being used for indicating the area of an overlapping region between the coverage of the target cell and the coverage of the tracking region of paging.

Description

Paging method, device and network side equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202410165847.9 filed in China on February 5, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a paging method, apparatus, and network-side equipment. Background Art

[0004] Some communication systems support non-terrestrial networks (NTNs), such as networks or network segments that utilize satellite or unmanned aircraft systems (UAS) platforms for transmission. In some related technologies, when an access network device receives a paging message from a core network device, it pages the terminal in the cell belonging to the paging area. In an NTN system, satellite movement may cause the access network device to stop providing service to the terminal. This may cause the terminal to reselect a cell while responding to the paging message, resulting in unnecessary air interface signaling. Summary of the Invention

[0005] The embodiments of the present application provide a paging method, apparatus, and network-side equipment, which can solve the problem that terminals are prone to unnecessary air interface signaling transmission.

[0006] In a first aspect, a paging method is provided, comprising:

[0007] The access network device receives a paging message, where the paging message carries paging area information, where the paging area information is used to indicate a tracking area for the paging;

[0008] The access network device determines, based on first information, an action of paging the terminal in the target cell, where the first information includes at least one of the following:

[0009] first time related information, where the first time related information is used to indicate the time when the target cell belongs to the tracking area of ​​the paging;

[0010] The first area-related information is used to indicate the area of ​​an overlapping area between the coverage of the target cell and the coverage of the paging tracking area.

[0011] In a second aspect, a paging method is provided, including:

[0012] The core network device determines, based on the second information, an action of sending a paging message to the access network device;

[0013] The second information includes at least one of the following:

[0014] second time-related information, where the second time-related information is used to indicate the time when the access network device belongs to the registration area of ​​the terminal;

[0015] Related information about the second area, where the second area is used to indicate the area of ​​an overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal.

[0016] In a third aspect, a paging device is provided, comprising:

[0017] A receiving module, configured to receive a paging message, wherein the paging message carries paging area information, and the paging area information is used to indicate a tracking area for paging;

[0018] a determining module, configured to determine an action of paging the terminal in the target cell based on first information, where the first information includes at least one of the following:

[0019] first time related information, where the first time related information is used to indicate the time when the target cell belongs to the tracking area of ​​the paging;

[0020] The first area-related information is used to indicate the area of ​​an overlapping area between the coverage of the target cell and the coverage of the paging tracking area.

[0021] In a fourth aspect, a paging device is provided, comprising:

[0022] a determining module, configured to determine an action of sending a paging message to the access network device based on the second information;

[0023] The second information includes at least one of the following:

[0024] second time-related information, where the second time-related information is used to indicate the time when the access network device belongs to the registration area of ​​the terminal;

[0025] Related information about the second area, where the second area is used to indicate the area of ​​an overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal.

[0026] In a fifth aspect, a communication device is provided, which includes a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the paging method on the access network device side provided in an embodiment of the present application are implemented.

[0027] In the sixth aspect, a communication device is provided, including a processor and a communication interface, wherein the communication interface is used to receive a paging message, the paging message carries paging area information, and the paging area information is used to indicate the tracking area of ​​the paging; the communication interface or the processor is used to determine the behavior of the paging terminal in the target cell based on first information, and the first information includes at least one of the following: first time-related information, the first time-related information is used to indicate the time when the target cell belongs to the tracking area of ​​the paging; first area area-related information, the first area area-related information is used to indicate the area of ​​the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging.

[0028] In the seventh aspect, a communication device is provided, which includes a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the paging method on the core network device side provided in the embodiment of the present application are implemented.

[0029] In the eighth aspect, a communication device is provided, comprising a processor and a communication interface, wherein the communication interface or the processor is used to determine the behavior of sending a paging message to an access network device based on second information; wherein the second information includes at least one of the following: second time-related information, the second time-related information is used to indicate the time when the access network device belongs to the registration area of ​​the terminal; second area area-related information, the second area area is used to indicate the area of ​​the overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal.

[0030] In the ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the paging method on the access network device side as provided in the embodiment of the present application are implemented, or the steps of the paging method on the access network device side as provided in the embodiment of the present application are implemented.

[0031] In the tenth aspect, a wireless communication system is provided, including: an access network device and a core network device, wherein the access network device can be used to execute the steps of the paging method on the access network device side provided in the embodiment of the present application, and the core network device can be used to execute the steps of the paging method on the core network device side provided in the embodiment of the present application.

[0032] In the eleventh aspect, a chip is provided, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run a program or instruction to implement the paging method on the access network device side as provided in the embodiment of the present application, or to implement the paging method on the core network device side as provided in the embodiment of the present application.

[0033] In the twelfth aspect, a computer program / program product is provided, which is stored in a storage medium, and is executed by at least one processor to implement the steps of the paging method on the access network device side as provided in the embodiment of the present application, and the computer program / program product is executed by at least one processor to implement the steps of the paging method on the core network device side as provided in the embodiment of the present application.

[0034] In an embodiment of the present application, an access network device receives a paging message, the paging message carries paging area information, the paging area information is used to indicate the tracking area of ​​the paging; the access network device determines the behavior of the paging terminal in the target cell based on the first information, the first information includes at least one of the following: first time-related information, the first time-related information is used to indicate the time when the target cell belongs to the tracking area of ​​the paging; first area-related information, the first area-related information is used to indicate the area of ​​the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging. In this way, since the first time-related information is used to indicate the time when the target cell belongs to the tracking area of ​​the paging, it is possible to determine the behavior of the paging terminal based on the time when the target cell belongs to the tracking area of ​​the paging. Compared with the access network device paging the terminal based only on whether the target cell belongs to the tracking area of ​​the paging, air interface signaling can be saved. Since the first area area related information is used to indicate the area of ​​the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging, the behavior of the paging terminal can be determined based on the area of ​​the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging. Compared with the access network device paging the terminal only based on whether the target cell belongs to the tracking area of ​​the paging, air interface signaling can be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] FIG1 is a block diagram of a wireless communication system to which embodiments of the present application may be applied;

[0036] FIG2 is a schematic diagram of a system scenario provided in an embodiment of the present application;

[0037] FIG3 is a flow chart of a paging method provided in an embodiment of the present application;

[0038] FIG4 is a flow chart of another paging method provided in an embodiment of the present application;

[0039] FIG5 is a structural diagram of a paging device provided in an embodiment of the present application;

[0040] FIG6 is a structural diagram of another paging device provided in an embodiment of the present application;

[0041] FIG7 is a structural diagram of a communication device provided in an embodiment of the present application;

[0042] FIG8 is a structural diagram of another communication device provided in an embodiment of the present application;

[0043] FIG9 is a structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0044] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0045] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0046] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0047] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0048] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, vehicle-mounted controller, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application.

[0049] The network-side device 12 may include an access network device or a core network device, wherein the access network device may also be referred to as a radio access network (RAN) device, a radio access network function, or a radio access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point (AP), or a wireless fidelity (WiFi) node. Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home evolved Node B (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0050] The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (MME), access mobility management function (AMF), session management function (SMF), user plane function (UPF), policy control function (PCF), policy and charging rules function unit (PCRF), edge application service discovery function (EASDF), unified data management (UDM), unified data repository (UDR), home user server (HSS), centralized network configuration (CNC), network storage function (NRF), network exposure function (NEF), local NEF (L-NEF), binding support function (BSF), application function ( Function, AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), Network Data Analytics Function (NWDAF), etc. It should be noted that in the embodiment of the present application, only the core network equipment in the NR system is taken as an example to introduce, and the specific type of the core network equipment is not limited.

[0051] In some embodiments, the paging in the embodiments of the present application may utilize non-terrestrial networks (NTNs). NTNs may refer to networks or network segments that utilize satellite or unmanned aircraft system (UAS) platforms for transmission. Compared to terrestrial communication systems, satellite-based non-terrestrial communication systems have a wider coverage range and are typically applicable in scenarios where ground base stations cannot be built or are damaged, such as continuous coverage in remote mountainous areas, deserts, oceans, and forests, or emergency communications in the event of natural disasters when ground base stations are damaged.

[0052] Satellites may include low earth orbiting (LEO) satellites, medium earth orbiting (MEO) satellites, geostationary earth orbiting (GEO) satellites and highly elliptical orbiting (HEO) satellites.

[0053] NTN systems come in two types: transparent payload-based NTN systems and regenerative payload-based NTN systems. In transparent payload-based NTN systems, terminals, base stations, and core network equipment are all deployed on the ground. Communication data between terminals and network-side equipment is relayed via satellites in the sky. In this system, satellites only forward data between base stations and terminals and do not decode or process this data. In regenerative payload-based NTN systems, satellites have some or all base station functions and can decode and process uplink and downlink data. As shown in Figure 2, the link between the satellite and the terminal is the service link, and the link between the satellite and the ground gateway is the feeder link.

[0054] The following describes in detail a paging method, a method for receiving a perception measurement result, an apparatus, and a device provided in an embodiment of the present application through some embodiments and application scenarios in conjunction with the accompanying drawings.

[0055] Please refer to FIG3 , which is a flowchart of a paging method provided in an embodiment of the present application. As shown in FIG3 , the method includes the following steps:

[0056] Step 301: An access network device receives a paging message. The paging message carries paging area information, and the paging area information is used to indicate a tracking area for paging.

[0057] The access network equipment may be a mobile device or a device with a mobile coverage area, such as a satellite base station or a ground base station providing NTN connection (ie, a transparent load system), or an access network device on a UAS device.

[0058] The above-mentioned received paging message may be a paging message sent by a receiving core network device, or a paging message forwarded by other receiving devices, and the core network device may be an AMF.

[0059] The paging area information is used to indicate the tracking area of ​​the paging, which may indicate one or more tracking areas of the paging, for example, by indicating one or more tracking areas of the paging through a Tracking Area Identity (TAI) list. In the embodiment of the present application, the tracking area of ​​the paging may also be referred to as a tracking area.

[0060] Step 302: The access network device determines an action of paging the terminal in the target cell based on first information, where the first information includes at least one of the following:

[0061] first time related information, where the first time related information is used to indicate the time when the target cell belongs to the tracking area of ​​the paging;

[0062] The first area-related information is used to indicate the area of ​​an overlapping area between the coverage of the target cell and the coverage of the paging tracking area.

[0063] The action of determining to page the terminal in the target cell based on the first information may include paging the terminal in the target cell based on the first information. Alternatively, the action of determining to page the terminal in the target cell based on the first information may include determining not to page the terminal in the target area based on the first information, thereby avoiding unnecessary signaling overhead.

[0064] Since the target cell is movable, for example, due to the movement of the satellite, the target cell moves. In other words, the coverage area of ​​the target cell is mobile, so that the target cell does not always belong to the tracking area of ​​the paging. In other words, the target cell will not belong to the tracking area of ​​the paging at a certain moment, and the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging is also changing.

[0065] In the embodiment of the present application, the first time related information is used to indicate the time when the target cell belongs to the tracking area of ​​the paging, and the first time related information may be an explicit or implicit indication of the time when the target cell belongs to the tracking area of ​​the paging.

[0066] The target cell may be one or more cells, and the target cell may be a cell selected by the access network device based on the first information, or a cell selected based on the paging area information.

[0067] In an embodiment of the present application, the first area area related information is used to indicate the area of ​​the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging, and the first area area related information can be an explicit or implicit indication of the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging.

[0068] The overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging may also be referred to as the overlapping area between the target cell and the tracking area of ​​the paging.

[0069] In an embodiment of the present application, since the first time-related information is used to indicate the time when the target cell belongs to the tracking area of ​​the paging, it is possible to determine the behavior of paging the terminal based on the time when the target cell belongs to the tracking area of ​​the paging. Compared with the access network device paging the terminal based only on whether the target cell belongs to the tracking area of ​​the paging, air interface signaling can be saved. And since the first area area-related information is used to indicate the area of ​​the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging, it is possible to determine the behavior of paging the terminal based on the area of ​​the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging. Compared with the access network device paging the terminal based only on whether the target cell belongs to the tracking area of ​​the paging, air interface signaling can be saved. For example, due to satellite movement, the access network device may be about to stop providing services to the terminal. In this way, based on the above-mentioned first time-related information or first area area-related information, it is determined not to page the terminal, thereby avoiding unnecessary air interface signaling transmission caused by cell reselection in the process of the terminal responding to the paging.

[0070] As an optional implementation manner, the first time-related information includes at least one of the following:

[0071] The remaining time that the target cell belongs to the tracking area of ​​the paging;

[0072] The time when the target cell stops belonging to the tracking area of ​​the paging.

[0073] The target cell belonging to the tracking area of ​​the paging may include at least one of the following:

[0074] The coverage of the target cell and the coverage of the paging tracking area overlap;

[0075] The tracking area corresponding to the target cell and the tracking area of ​​the paging have an intersection, wherein the tracking area corresponding to the target cell is broadcast by the access network device.

[0076] The intersection between the coverage of the target cell and the coverage of the paging tracking area may be that the coverage area of ​​the target cell and the paging tracking area intersect or the target cell and the paging tracking area intersect.

[0077] The tracking area corresponding to the target cell may be a tracking area in which the access network device corresponding to the target cell sends broadcast messages.

[0078] The tracking area corresponding to the target cell and the tracking area of ​​the paging may intersect, and the tracking area corresponding to the target cell may be a subset of the tracking area of ​​the paging.

[0079] The remaining time that the target cell belongs to the tracking area of ​​the paging can be the time from the current time to the time when the target cell does not belong to or leaves the tracking area of ​​the paging, or the time from the time when the access network device receives the paging message to the time when the target cell does not belong to or leaves the tracking area of ​​the paging. For example: before 10:00, the target cell belongs to the tracking area of ​​the paging, and from 10:00 onwards it does not belong to the tracking area of ​​the paging. The time when the access network device receives the paging message is 9:50, then the remaining time that the target cell belongs to the tracking area of ​​the paging is 10 minutes.

[0080] The time when the above-mentioned target cell stops belonging to the tracking area of ​​the paging may be the time when the target cell stops belonging to the tracking area of ​​the paging, or the time when the target cell starts to belong to the tracking area of ​​the paging. For example: before 10:00, the target cell belongs to the tracking area of ​​the paging, and from 10:00 onwards it does not belong to the tracking area of ​​the paging, then 10:00 is the time when the target cell stops belonging to the tracking area of ​​the paging.

[0081] The remaining time that the target cell belongs to the tracking area of ​​the paging or the time when the target cell stops belonging to the tracking area of ​​the paging can more effectively determine the behavior of the paging terminal in the target cell and avoid unnecessary air interface signaling overhead.

[0082] As an optional implementation manner, the first region area-related information includes at least one of the following:

[0083] a reference location of the target cell;

[0084] at least one first reference position;

[0085] The first reference location is a reference location corresponding to at least one of the paging tracking areas.

[0086] The reference location of the target cell may be the center location of the target cell or a reference location agreed upon in a protocol or configured by network side equipment (eg, Operation Administration and Maintenance (OAM), core network equipment).

[0087] The reference position of the above-mentioned target cell can indicate the area of ​​the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging, such as determining the area of ​​the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging by the reference position of the target cell and the reference position corresponding to the tracking area of ​​the paging, or determining the area of ​​the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging by the reference position of the target cell and the edge position of the tracking area of ​​the paging.

[0088] The reference location corresponding to the tracking area of ​​the above paging can be the center location of the tracking area or the reference location agreed upon by the protocol or configured by the network side equipment (such as OAM, core network equipment), and multiple paging tracking areas can correspond to the same reference location, or different paging tracking areas correspond to different reference locations, for example: X tracking areas have Y reference locations, and X is greater than or equal to Y.

[0089] It should be noted that, in the embodiment of the present application, multiple tracking areas for paging refer to multiple tracking areas, which are tracking areas for paging, not tracking areas corresponding to multiple paging messages.

[0090] The above-mentioned at least one first reference position can indicate the area of ​​the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging, such as determining the area of ​​the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging through the reference position of the target cell and at least one first reference position, or determining the area of ​​the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging through at least one first reference position and the edge position of the target cell.

[0091] As an optional implementation manner, the access network device determines, based on the first information, an action of paging the terminal in the target cell, including at least one of the following:

[0092] When the target cell satisfies the first condition, the access network device pages the terminal in the target cell;

[0093] When the target cell does not satisfy the first condition, the access network device does not page the terminal in the target cell.

[0094] The first condition may be a condition stipulated in a protocol or configured by a network-side device.

[0095] In this embodiment, the terminal is paged in the target cell only when the target cell meets the first condition, which can improve the reliability of paging. If the first condition is not met, the terminal is not paged in the target cell, which can improve the reliability of paging and avoid unnecessary signaling.

[0096] Optionally, in a case where the first time-related information includes a remaining time during which the target cell belongs to the tracking area of ​​the paging, the first condition includes that the remaining time is greater than or equal to a first threshold;

[0097] or,

[0098] When the first time-related information includes the time when the target cell stops belonging to the tracking area of ​​the paging, the first condition includes that the current time is less than a first offset value from the time when the target cell stops belonging to the tracking area of ​​the paging, wherein the first offset value is greater than or equal to a second threshold;

[0099] or,

[0100] The first condition includes that the area of ​​the overlapping region is greater than or equal to a third threshold.

[0101] Among them, the above-mentioned first threshold, second threshold, third threshold or first bias value is agreed upon by the protocol or configured by the network side equipment (such as OAM, core network equipment) or determined by the access network equipment. If configured by the core network equipment, it can be carried by the above-mentioned paging message, for example.

[0102] Since the above-mentioned remaining time is greater than or equal to the first threshold, the target cell has more remaining time to provide services to the terminal after paging the terminal, and the terminal has enough time to access the network and respond to the paging. When the remaining time is less than or equal to the first threshold, the terminal is not paged in the target cell. This can avoid the access network device from stopping serving the terminal after paging the terminal. This can avoid the terminal from reselecting the cell during the paging response process, resulting in unnecessary connection establishment and unnecessary air interface signaling transmission.

[0103] The current time may be the time when step 302 is executed.

[0104] By setting the first bias value to be greater than or equal to the second threshold, the target cell can continue to provide services to the terminal after paging the terminal. If the first bias value is less than or equal to the second threshold, the terminal will not be paged in the target cell. This can prevent the access network device from stopping serving the terminal after paging the terminal. This can prevent the terminal from reselecting a cell during the paging response process, resulting in unnecessary connection establishment and unnecessary signaling transmission.

[0105] The fact that the area of ​​the above-mentioned overlapping area is greater than or equal to the third threshold value indicates that the area of ​​the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging is large, and the remaining time of the target cell belonging to the tracking area of ​​the paging is relatively long, so that after the terminal is paged, the target cell can continue to provide services to the terminal, and it can also avoid the access network device from stopping serving the terminal after the terminal is paged, which can avoid the terminal from reselecting the cell during the paging response process, resulting in unnecessary connection establishment and unnecessary air interface signaling transmission.

[0106] Optionally, the area of ​​the overlapping region being greater than or equal to a third threshold includes at least one of the following:

[0107] The distance between the reference position of the target cell and any first reference position is less than or equal to a fourth threshold;

[0108] The distances between the reference position of the target cell and the multiple first reference positions are all less than or equal to a fourth threshold;

[0109] The first reference location is a reference location corresponding to at least one of the paging tracking areas.

[0110] The first reference position mentioned above is described in the above embodiments and will not be elaborated here.

[0111] The fourth threshold may be determined by protocol agreement, network side configuration (eg, OAM, core network equipment), or access network equipment, or may be determined based on the third threshold or the fourth threshold may be equal to the third threshold.

[0112] In this embodiment, when the distance between the reference position of the target cell and any first reference position is less than or equal to the fourth threshold, it can be determined that the area of ​​the overlapping area is greater than or equal to the third threshold, such as determining that the area of ​​the overlapping area between the target cell and at least one paging tracking area is greater than or equal to the third threshold.

[0113] The distances between the reference position of the above-mentioned target cell and multiple first reference positions are all less than or equal to the fourth threshold, which can make the area of ​​the overlapping area between the target cell and the tracking area of ​​each paging greater than or equal to the third threshold, so that after the access network device pages the terminal, the target cell can provide services to the terminal for a relatively long time, which can avoid the possibility that the target cell stops serving the terminal after the access network device pages the terminal, thereby avoiding the terminal from reselecting the cell during the paging response process, resulting in unnecessary connection establishment and unnecessary signaling transmission.

[0114] It can be understood that the fact that the area of ​​the overlapping region is greater than or equal to the third threshold may also reflect that the remaining time that the target cell belongs to the tracking area of ​​the paging is greater than or equal to the first threshold.

[0115] As an optional implementation manner, the information related to the area of ​​the first region is determined by any of the following methods:

[0116] Acquired and preconfigured by core network equipment and determined by the access network equipment;

[0117] or,

[0118] The first time related information is determined by any of the following methods:

[0119] It is obtained and pre-configured through the core network equipment and determined by the access network equipment.

[0120] The above-mentioned acquisition through the core network device may be that the access network device receives the above-mentioned first area-related information or first time-related information sent by the core network device, for example, the first area-related information or the first time-related information is carried by a paging message.

[0121] The determination by the access network device may be that the access network device determines the first area-related information or the first time-related information based on relevant information of the target cell.

[0122] As an optional implementation manner, the access network device determines the first time-related information based on at least one of the following:

[0123] Satellite aiding information;

[0124] Mapping relationship between tracking areas and geographic locations;

[0125] or,

[0126] The access network device determines the first region area related information based on at least one of the following:

[0127] Satellite aiding information;

[0128] Mapping between tracking areas and geographic locations.

[0129] The satellite assistance information may include at least one of the following:

[0130] ephemeris information;

[0131] Epoch time (epochTime).

[0132] The movement of the satellite can be estimated through the ephemeris information or the epoch time, so that the movement information of the target cell can be accurately determined based on the ephemeris information or the epoch time, and then the first region area related information and the first time related information can be determined.

[0133] The mapping relationship table between the tracking areas and the geographical locations may be pre-configured on the access network device or configured through OAM.

[0134] The geographical location of the tracking area can be determined through the mapping relationship table between tracking areas and geographical locations, so that the first area-related information and the first time-related information can be determined based on the geographical location of the tracking area.

[0135] As an optional implementation manner, the paging terminal:

[0136] Paging terminal via NTN system.

[0137] In this implementation, the terminal can be paging through the NTN system to improve the diversity of paging.

[0138] It should be noted that the embodiments of the present application are not limited to paging the terminal through the NTN system. For example, the target cell may also be a communication system with a variable cell area outside the NTN.

[0139] In an embodiment of the present application, an access network device receives a paging message, the paging message carries paging area information, the paging area information is used to indicate the tracking area of ​​the paging; the access network device determines the behavior of the paging terminal in the target cell based on the first information, the first information includes at least one of the following: first time-related information, the first time-related information is used to indicate the time when the target cell belongs to the tracking area of ​​the paging; first area-related information, the first area-related information is used to indicate the area of ​​the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging. In this way, since the first time-related information is used to indicate the time when the target cell belongs to the tracking area of ​​the paging, it is possible to determine the behavior of the paging terminal based on the time when the target cell belongs to the tracking area of ​​the paging. Compared with the access network device paging the terminal based only on whether the target cell belongs to the tracking area of ​​the paging, air interface signaling can be saved. Since the first area area related information is used to indicate the area of ​​the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging, the behavior of the paging terminal can be determined based on the area of ​​the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging. Compared with the access network device paging the terminal only based on whether the target cell belongs to the tracking area of ​​the paging, air interface signaling can be saved.

[0140] Please refer to FIG4 , which is a flowchart of another paging method provided in an embodiment of the present application. As shown in FIG4 , the method includes the following steps:

[0141] Step 401: The core network device determines, based on the second information, to send a paging message to the access network device.

[0142] The second information includes at least one of the following:

[0143] second time-related information, where the second time-related information is used to indicate the time when the access network device belongs to the registration area of ​​the terminal;

[0144] Related information about the second area, where the second area is used to indicate the area of ​​an overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal.

[0145] Among them, the above-mentioned core network device can also be called a core network network element, and specifically can be any core network device described above in the embodiments of this application.

[0146] The above-mentioned behavior of the core network device determining to send a paging message to the access network device based on the second information can be the behavior of determining to send a paging message to the access network device based on the second information when the terminal core network device needs to page the terminal, such as the behavior of determining to send a paging message to the access network device based on the second information when there is downlink data of the terminal.

[0147] The above-mentioned behavior of determining to send a paging message to the access network device based on the second information may include sending a paging message to the access network device based on the second information or determining not to send a paging message to the access network device based on the second information.

[0148] Since the access network equipment is movable, for example, the target cell moves due to the movement of the satellite, and thus the access network equipment will not belong to the registration area of ​​the terminal at a certain time, the area of ​​the overlapping area between the coverage of the access network equipment and the coverage of the registration area of ​​the terminal also changes.

[0149] It should be noted that the access network device in this embodiment can be the access network device in the embodiment shown in Figure 3, or it can be the access network device in the embodiment not shown in Figure 3. For example, after receiving the above-mentioned paging message, the access network device in this embodiment can determine whether the target cell belongs to the paging tracking area. The paging terminal in the target cell can specifically be a ground base station or a satellite base station, providing a ground base station connected to NTN (i.e., a transparent load system).

[0150] The second time-related information is used to indicate the time when the access network device belongs to the registration area of ​​the terminal, and may be an explicit or implicit indication of the time when the access network device belongs to the registration area of ​​the terminal.

[0151] The second area is used to indicate the area of ​​the overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal. It can be an explicit or implicit indication of the area of ​​the overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal.

[0152] In this embodiment, since the second time-related information is used to indicate the time when the access network device belongs to the registration area of ​​the terminal, it is possible to determine the behavior of sending a paging message to the access network device based on the time when the access network device belongs to the registration area of ​​the terminal. Compared with the core network device directly sending the paging message to the access network device, air interface signaling can be saved. And since the second area area-related information is used to indicate the area of ​​the overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal, it is possible to determine the behavior of sending a paging message to the access network device based on the area of ​​the overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal. Compared with the core network device directly sending the paging message to the access network device, air interface signaling can be saved. For example, due to satellite movement, the access network device may be about to stop providing services to the terminal. In this way, based on the above-mentioned second time-related information or second area-related information, it is determined not to send a paging message to the access network device, thereby avoiding unnecessary air interface signaling transmission caused by cell reselection in the process of the terminal responding to the paging.

[0153] As an optional implementation manner, the second time-related information includes at least one of the following:

[0154] The remaining time that the access network device belongs to the registration area of ​​the terminal;

[0155] The time when the access network device stops belonging to the registration area of ​​the terminal.

[0156] The registration area of ​​the terminal to which the access network device belongs may include at least one of the following:

[0157] The coverage area of ​​the access network device and the registration area of ​​the terminal intersect;

[0158] The tracking area managed by the access network device and the registration area of ​​the terminal overlap.

[0159] The coverage area of ​​the above-mentioned access network device and the registration area of ​​the terminal may intersect, which may be that the coverage area of ​​the access network device is a subset of the registration area of ​​the terminal; the tracking area managed by the above-mentioned access network device and the registration area of ​​the terminal may intersect, which may be that the tracking area managed by the access network device is a subset of the registration area of ​​the terminal.

[0160] The time when the access network device stops belonging to the registration area of ​​the terminal may be the time when the access network device starts not belonging to or leaves the registration area of ​​the terminal.

[0161] By using the remaining time that the access network device belongs to the registration area of ​​the terminal or the time when the access network device stops belonging to the registration area of ​​the terminal, the behavior of sending a paging message to the access network device can be more effectively determined, avoiding unnecessary air interface signaling overhead.

[0162] As an optional implementation manner, the second region area-related information includes at least one of the following:

[0163] The reference location of the access network device;

[0164] at least one second reference position;

[0165] The second reference location is a reference location corresponding to at least one tracking area of ​​the registration area.

[0166] The reference location of the access network device may be a central location covered by the access network device or a reference location corresponding to a tracking area managed by the access network device.

[0167] The reference position of the above-mentioned access network device can indicate the area of ​​the overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal, such as determining the area of ​​the overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal based on the reference position of the access network device and the reference position corresponding to at least one tracking area of ​​the registration area, or determining the area of ​​the overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal based on the reference position of the access network device and the edge position of the registration area.

[0168] The registration area includes at least one tracking area. For reference positions corresponding to the tracking areas, please refer to the corresponding description of the embodiment shown in FIG3 , which will not be described in detail here.

[0169] The above-mentioned at least one second reference position can indicate the area of ​​the overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal, such as determining the area of ​​the overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal based on the reference position of the access network device and at least one second reference position, or determining the area of ​​the overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal based on the edge position of the coverage of the access network device of at least one second reference position.

[0170] As an optional implementation manner, the core network device determines, based on the second information, an action of sending a paging message to the access network device, including at least one of the following:

[0171] If the second condition is met, sending a paging message to the access network device;

[0172] If the second condition is not met, no paging message is sent to the access network device.

[0173] The second condition may be a condition stipulated in the protocol or configured by the network side device.

[0174] In this implementation, a paging message can be sent to the access network device only when the target cell meets the second condition, which can improve the reliability of paging. If the second condition is not met, the paging message will not be sent to the access network device, which can not only improve the reliability of paging but also avoid the generation of unnecessary signaling.

[0175] Optionally, when the second time-related information includes a remaining time during which the access network device belongs to a registration area of ​​the terminal, the second condition includes that the remaining time is greater than or equal to a fifth threshold;

[0176] or,

[0177] When the second time-related information includes the time when the access network device stops belonging to the registration area of ​​the terminal, the second condition includes that the current time is less than a second offset value from the time when the access network device stops belonging to the registration area of ​​the terminal, wherein the second offset value is greater than or equal to a sixth threshold;

[0178] or,

[0179] The second condition includes that the area of ​​the overlapping region is greater than or equal to a seventh threshold.

[0180] Among them, the above-mentioned fifth threshold, sixth threshold, seventh threshold or second offset value is a protocol agreement or a network side device configuration.

[0181] Since the above-mentioned remaining time is greater than or equal to the fifth threshold, the access network device can continue to provide services to the terminal after paging the terminal. When the remaining time is less than the fifth threshold, no paging message is sent to the access network device. This can avoid the access network device stopping serving the terminal after paging the terminal. This can avoid the terminal from reselecting a cell during the paging response process, resulting in unnecessary connection establishment and unnecessary signaling transmission.

[0182] The above-mentioned second bias value is greater than or equal to the sixth threshold value, which can also enable the access network device to continue to provide services to the terminal after paging the terminal. When the second bias value is less than or equal to the sixth threshold value, no paging message is sent to the access network device, which can avoid the access network device stopping serving the terminal after paging the terminal. This can avoid the terminal from reselecting a cell during the paging response process, resulting in unnecessary connection establishment and unnecessary air interface signaling transmission.

[0183] The fact that the area of ​​the overlapping area is greater than or equal to the seventh threshold value indicates that the area of ​​the overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal is large, and the remaining time of the access network device belonging to the registration area of ​​the terminal is relatively long, so that after paging the terminal, the access network device can continue to provide services to the terminal, and it can also avoid the access network device stopping serving the terminal after paging the terminal, which can avoid the terminal from reselecting a cell during the paging response process, resulting in unnecessary connection establishment and unnecessary signaling transmission.

[0184] Optionally, the overlapping area being greater than or equal to a seventh threshold includes at least one of the following:

[0185] The distance between the reference position of the access network device and any second reference position is less than or equal to an eighth threshold;

[0186] The distances between the reference position of the access network device and the multiple second reference positions are all less than or equal to an eighth threshold;

[0187] The second reference location is a reference location corresponding to at least one tracking area of ​​the registration area.

[0188] The reference positions corresponding to the above tracking areas are described in the corresponding description of the embodiment shown in FIG3 , which will not be described in detail here.

[0189] The eighth threshold may be a protocol agreement or a network-side configuration, or may be determined based on the seventh threshold, or the eighth threshold may be equal to the seventh threshold.

[0190] In this embodiment, when the distance between the reference position of the access network device and any second reference position is less than or equal to the eighth threshold, it can be determined that the area of ​​the overlapping area is greater than or equal to the seventh threshold, such as determining that the area of ​​the overlapping area of ​​the coverage of the access network device and at least one tracking area is greater than or equal to the third threshold.

[0191] The distances between the reference position of the above-mentioned access network device and multiple second reference positions are all less than or equal to the eighth threshold, which can make the area of ​​the overlapping area between the coverage of the access network device and the coverage of each paging tracking area greater than or equal to the seventh threshold, so that the access network device can provide services to the terminal for a relatively long time after paging the terminal, and can avoid the access network device stopping serving the terminal after paging the terminal. This can avoid the terminal from reselecting a cell during the paging response process, resulting in unnecessary connection establishment and unnecessary signaling transmission.

[0192] It can be understood that the fact that the area of ​​the overlapping region is greater than or equal to the seventh threshold may also reflect that the remaining time that the access network device belongs to the registration area of ​​the terminal is greater than or equal to the fifth threshold.

[0193] As an optional implementation manner, the area-related information of the second region is determined by any of the following methods:

[0194] Pre-configured, obtained through the access network, and determined by the core network device;

[0195] Alternatively, the second time-related information is determined by any of the following methods:

[0196] Pre-configured, obtained through the access network, and determined by the core network device.

[0197] The obtaining through the access network may be that the core network device receives the second region area related information or the second time related information sent by the access network device.

[0198] The determination by the core network device may be based on relevant information of the access network device to determine the second region area related information or the second time related information.

[0199] As an optional implementation, the method further includes:

[0200] The core network device obtains third information from the access network, where the third information is used to determine information related to the area of ​​the second region.

[0201] The core network device obtaining the third information from the access network may be receiving the third information sent by the access network device or other access network devices.

[0202] The third information is used to determine the information related to the area of ​​the second region, which can be understood as the core network device being able to determine the information related to the area of ​​the second region based on the third information.

[0203] The third information may include at least one of the following:

[0204] Satellite aiding information;

[0205] The reference location of the access network device;

[0206] at least one second reference position;

[0207] The second reference location is a reference location corresponding to at least one tracking area of ​​the registration area.

[0208] In this embodiment, the satellite assistance information may include at least one of the following:

[0209] Satellite ephemeris information;

[0210] Epoch time.

[0211] The mobility information of the access network device can be estimated through the ephemeris information or the epoch time, so that the area-related information of the second region can be accurately determined.

[0212] In the above implementation, since the third information is used to determine the information related to the area of ​​the second region, the core network device can determine the information related to the area of ​​the second region based on the third information sent by the access network device.

[0213] As an optional implementation manner, the core network device determines the second time-related information based on at least one of the following:

[0214] Satellite aiding information;

[0215] Mapping relationship between tracking areas and geographic locations;

[0216] or,

[0217] The core network device determines the second region area related information based on at least one of the following:

[0218] Satellite aiding information;

[0219] The mapping relationship between tracking areas and geographic locations.

[0220] The mobile information of the access network device can be determined through the satellite auxiliary information, so that the above-mentioned second area area information and second time information can be accurately determined.

[0221] The geographical location of the tracking area can be determined through the mapping relationship table between tracking areas and geographical locations, so that the first area-related information and the first time-related information can be determined based on the geographical location of the tracking area.

[0222] As an optional implementation, the method further includes:

[0223] The core network device obtains fourth information from the access network, where the fourth information is used to determine the second time-related information.

[0224] The core network device obtaining the fourth information from the access network may be receiving the fourth information sent by the access network device or other access network devices.

[0225] The fourth information is used to determine the second time-related information, which means that the core network device can determine the second time-related information based on the fourth information.

[0226] The fourth information may include at least one of the following:

[0227] Satellite auxiliary information, tracking area information covered by the access network device in the future, time information associated with the tracking area information covered by the access network device in the future, and time information when the access network device does not belong to the registration area of ​​the terminal.

[0228] The time information associated with the tracking area information that will be covered by the access network device in the future may indicate the time distribution of the tracking areas that will be covered by the access network device in the future.

[0229] The time information when the access network device does not belong to the registration area of ​​the terminal may be the Coordinated Universal Time (UTC) time or the local time when the access network device does not belong to the registration area of ​​the terminal.

[0230] In the above implementation, since the fourth information is used to determine the second time-related information, the core network device can determine the second time-related information based on the fourth information sent by the access network device.

[0231] As an optional implementation manner, the sending the paging message includes:

[0232] Send paging messages via the NTN system.

[0233] The sending of the paging message through the NTN system may be that the access network device adopts the NTN, thereby sending the paging message to the access network device through the NTN system.

[0234] It should be noted that the embodiments of the present application are not limited to sending paging messages through the NTN system. For example, paging messages can be sent through other communication systems that support mobility of access network devices.

[0235] In this embodiment, since the second time-related information is used to indicate the time when the access network device belongs to the registration area of ​​the terminal, it is possible to determine the behavior of sending a paging message to the access network device based on the time when the access network device belongs to the registration area of ​​the terminal. Compared with the core network device directly sending the paging message to the access network device, this can save air interface signaling. Moreover, since the second area-related information is used to indicate the area of ​​the overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal, it is possible to determine the behavior of sending a paging message to the access network device based on the area of ​​the overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal. Compared with the core network device directly sending the paging message to the access network device, this can save air interface signaling.

[0236] The following describes the method provided in the embodiments of the present application through multiple examples:

[0237] Example 1:

[0238] This embodiment mainly describes how the access network determines whether to page a terminal in a cell based on the time when the cell belongs to a tracking area. The method may include the following steps:

[0239] Step 1: When there is downlink data from the terminal, the core network device initiates a paging process. The core network device initiates the paging process by sending a paging message (such as an NG / S1 message) to an access network device (also known as an access network node) that belongs to the terminal's registration area. The paging message carries paging area information, indicating the tracking area for the paging, as indicated by the Tracking Area Identifier List (TAI List for Paging IE) in the paging information element.

[0240] The access network equipment belongs to the registration area of ​​the terminal, which may be an intersection between the coverage area of ​​the access network equipment and the registration area of ​​the terminal. The access network equipment includes ground base stations, satellite base stations, and ground base stations that provide NTN connections (i.e., transparent load systems).

[0241] Step 2: The access network device receives the paging message, and the access network device pages the terminal in the target cell based on the first information, where the first information is related to the time when the target cell belongs to the tracking area, and the tracking area is the tracking area indicated by the paging area information.

[0242] The target cell belongs to the tracking area, which may be that the tracking area corresponding to the target cell and the tracking area of ​​the paging have an intersection, or the coverage area of ​​the target cell and the tracking area of ​​the paging have an intersection.

[0243] The access network device paging the terminal in the target cell based on the first information includes: when the target cell meets the first condition, the access network device paging the terminal in the target cell; conversely, when the target cell does not meet the first condition, the access network device does not paging the terminal in the target cell.

[0244] In other words, the access network selects a target cell to page the terminal based on the first information.

[0245] The first condition mentioned above includes at least one of the following:

[0246] The remaining time that the target cell belongs to the tracking area of ​​the paging is greater than or equal to a first threshold. In other words, the time from the target cell leaving the tracking area of ​​the paging is greater than or equal to the first threshold.

[0247] The distance between the reference position of the target cell and the first reference position is less than or equal to a fourth threshold, where the first reference position is used to indicate the reference position of at least one tracking area, and the at least one tracking area is a tracking area of ​​at least one paging indicated by the paging area information.

[0248] The first threshold may be determined by the access network itself, for example, based on implementation.

[0249] The access network device may determine the remaining time based on satellite assistance information (e.g., epochTime and satellite ephemeris information), and further based on a mapping relationship between tracking areas and geographic locations. In this scenario, the access network is configured with a mapping relationship between geographic locations and tracking areas (e.g., configured via OAM).

[0250] If the tracking area of ​​the paging indicated by the paging area information includes one tracking area, the distance between the reference position of the target cell and the reference position of one tracking area is less than or equal to the fourth threshold, then the above condition is met.

[0251] If the tracking area of ​​the paging indicated by the paging area information includes multiple tracking areas, multiple tracking areas can have one reference position, and multiple tracking areas can also have multiple reference positions (for example, each tracking area has one reference position, and for example, X tracking areas have Y reference positions, X>Y), then the distance between the reference position of the target cell and any first reference position is less than or equal to the fourth threshold, which means that the above-mentioned first condition is met.

[0252] The fourth threshold may be determined by a protocol agreement or configured on the network side (eg, core network). If configured by the core network, it may be carried in a paging message. It may also be determined by the access network itself, for example, based on implementation.

[0253] The reference location of the target cell can be pre-configured or determined by the access network itself. The first reference location can be configured by the network side (e.g., the core network) or pre-configured or determined by the access network itself. If configured by the core network, it can be carried in a paging message. The reference location can be a geographic location, such as represented by longitude and latitude. It is understandable that if the first reference location is determined by the access network, the access network is configured with a mapping relationship between the geographic location and the tracking area. If the first reference location is determined by the core network, the core network is configured with a mapping relationship between the geographic location and the tracking area.

[0254] Alternatively, the access network device may determine the reference position of the target cell based on satellite assistance information (eg, epochTime and satellite ephemeris information).

[0255] The target cell also meets the requirement of belonging to the tracking area indicated by the paging area information in the paging message.

[0256] It is understandable that there can be multiple target cells

[0257] The access network device paging the terminal in the target cell includes: the access network generating a paging message at an air interface.

[0258] Example 2:

[0259] This embodiment mainly describes how the core network determines whether to send a paging message to the access network based on the time when the satellite belongs to the tracking area. The method may include the following steps:

[0260] Step 1: In the case of downlink data of the terminal, the core network device initiates a paging process based on second information, where the second information is related to the time when the access network device belongs to the registration area of ​​the terminal.

[0261] The core network device's behavior of initiating a paging process based on the second information includes: sending a paging message (an NG / S1 message) to the access network device if the access network device meets the second condition, and not sending a paging message (an NG / S1 message) to the access network device if the access network device does not meet the second condition. The access network device includes a ground base station, a satellite base station (a satellite is an access network device), and a ground base station that provides NTN connectivity (i.e., a transparent load system, where the satellite is connected to the access network device).

[0262] In other words, the core network device selects an access network device to page the terminal based on the second information.

[0263] The above-mentioned access network device may be referred to as a first access network device or a target access network device.

[0264] The access network device belongs to the registration area of ​​the terminal. The access network device belonging to the registration area of ​​the terminal may mean that the coverage area of ​​the access network device and the registration area of ​​the terminal intersect. The registration area of ​​the terminal includes at least one tracking area (e.g., TAI).

[0265] The second condition may include at least one of the following:

[0266] The remaining time that the access network device belongs to the registration area of ​​the terminal is greater than or equal to a fifth threshold. In other words, the time since the first access network left the registration area of ​​the terminal is greater than or equal to the fifth threshold.

[0267] The distance between the reference position of the access network device and the second reference position is less than or equal to an eighth threshold, where the second reference position is used to indicate the reference position of at least one tracking area, where the at least one tracking area is a registration area of ​​the terminal.

[0268] Among them, the fifth threshold can be agreed upon by the protocol or configured on the network side (such as the access network). If configured by the access network, it can be carried through the NG setup request (NG setup request) message and the RAN configuration update (RAN Configuration Update) message.

[0269] The fifth threshold may be determined by the core network itself, for example, based on implementation.

[0270] The core network device can determine the remaining time based on satellite auxiliary information (such as epochTime and satellite ephemeris information), and also determine the remaining time based on the mapping relationship between the geographic location and the tracking area. In this scenario, the core network device is configured with a mapping relationship between the geographic location and the tracking area (for example, through OAM configuration, for example, obtained through the access network).

[0271] The above method may further include:

[0272] The core network device receives at least one of the following information from the access network, for determining a remaining time that the access network device belongs to the registration area of ​​the terminal:

[0273] Satellite assistance information (such as epochTime and satellite ephemeris information)

[0274] Tracking area information that will be covered by the access network equipment in the future;

[0275] Time information associated with the tracking area information that the access network device will cover in the future;

[0276] The time when the access network device does not belong to the registration area of ​​the terminal, such as UTC time.

[0277] It is understandable that the core network device determines the above information based on the mapping relationship between satellite auxiliary information, tracking area information and geographic location.

[0278] The registration area of ​​the terminal includes one tracking area / multiple tracking areas, which are described in the same manner as in the first embodiment.

[0279] The eighth threshold may be determined by protocol agreement or configured on the network side (e.g., access network). If configured by the access network, it may be carried by the NG setup request message or the RAN Configuration Update message. It may also be determined by the core network itself, e.g., based on implementation.

[0280] The reference position of the access network device can be pre-configured or determined by the core network device based on satellite auxiliary information; the reference position of the access network device can be obtained through the access network, for example, through the NG setup request message or the RAN Configuration Update message.

[0281] The above-mentioned two reference locations can be pre-configured or determined by the core network device itself, or obtained through the access network. The reference location can be a geographic location, for example, represented by longitude and latitude. It is understood that if the second reference location is determined by the core network device, the core network device is configured with a mapping relationship between the geographic location and the tracking area. If the second reference location is determined by the access network device, the core network device is configured with a mapping relationship between the geographic location and the tracking area, and obtains the registration area of ​​the terminal (for example, the TAI List for paging in the paging message) from the access network device.

[0282] The method may further include: the core network device receiving at least one of the following information from the access network, for determining the reference location or the second reference location of the access network device:

[0283] Satellite assistance information (such as epochTime and satellite ephemeris information);

[0284] The reference location of the above access network equipment;

[0285] Second reference position.

[0286] Step 2: The access network device receives the paging message and pages the terminal in a second cell, where the second cell belongs to the tracking area indicated by the paging message.

[0287] The embodiments of the present application can be applicable to LTE and NR communication systems, as well as subsequent evolved communication systems, and to transparent load systems and regenerative load systems.

[0288] Through the method provided in the embodiment of the present application, the core network device can decide whether to send a paging message to the access network based on the time when the satellite belongs to the tracking area, thereby avoiding unnecessary NG interface signaling overhead. The access network device can decide whether to page the terminal in the cell based on the time when the cell belongs to the tracking area, thereby avoiding unnecessary air interface signaling overhead.

[0289] The paging method provided in the embodiment of the present application can be executed by a paging device. In the embodiment of the present application, the paging method performed by the paging device is taken as an example to illustrate the paging device provided in the embodiment of the present application.

[0290] Please refer to FIG5 , which is a structural diagram of a paging device provided in an embodiment of the present application. As shown in FIG5 , the paging device 500 includes:

[0291] Receiving module 501, configured to receive a paging message, wherein the paging message carries paging area information, and the paging area information is used to indicate a tracking area for paging;

[0292] The determining module 502 is configured to determine an action of paging the terminal in the target cell based on first information, where the first information includes at least one of the following:

[0293] first time related information, where the first time related information is used to indicate the time when the target cell belongs to the tracking area of ​​the paging;

[0294] The first area-related information is used to indicate the area of ​​an overlapping area between the coverage of the target cell and the coverage of the paging tracking area.

[0295] Optionally, the first time-related information includes at least one of the following:

[0296] The remaining time that the target cell belongs to the tracking area of ​​the paging;

[0297] The time when the target cell stops belonging to the tracking area of ​​the paging;

[0298] or,

[0299] The first region area related information includes at least one of the following:

[0300] a reference location of the target cell;

[0301] at least one first reference position;

[0302] The first reference location is a reference location corresponding to at least one of the paging tracking areas.

[0303] Optionally, the determining module 502 is configured to perform at least one of the following:

[0304] If the target cell satisfies a first condition, paging the terminal in the target cell;

[0305] If the target cell does not satisfy the first condition, the terminal is not paged in the target cell.

[0306] Optionally, in a case where the first time-related information includes a remaining time during which the target cell belongs to the tracking area of ​​the paging, the first condition includes that the remaining time is greater than or equal to a first threshold;

[0307] or,

[0308] When the first time-related information includes the time when the target cell stops belonging to the tracking area of ​​the paging, the first condition includes that the current time is less than a first offset value from the time when the target cell stops belonging to the tracking area of ​​the paging, wherein the first offset value is greater than or equal to a second threshold;

[0309] or,

[0310] The first condition includes that the area of ​​the overlapping region is greater than or equal to a third threshold.

[0311] Optionally, the area of ​​the overlapping region being greater than or equal to a third threshold includes at least one of the following:

[0312] The distance between the reference position of the target cell and any first reference position is less than or equal to a fourth threshold;

[0313] The distances between the reference position of the target cell and the multiple first reference positions are all less than or equal to a fourth threshold;

[0314] The first reference location is a reference location corresponding to at least one of the paging tracking areas.

[0315] Optionally, the first region area related information is determined by any of the following methods:

[0316] Acquired and preconfigured by core network equipment and determined by the access network equipment;

[0317] or,

[0318] The first time related information is determined by any of the following methods:

[0319] It is obtained and pre-configured through the core network equipment and determined by the access network equipment.

[0320] Optionally, the access network device determines the first time-related information based on at least one of the following:

[0321] Satellite aiding information;

[0322] Mapping relationship between tracking areas and geographic locations;

[0323] or,

[0324] The access network device determines the first region area related information based on at least one of the following:

[0325] Satellite aiding information;

[0326] Mapping between tracking areas and geographic locations.

[0327] Optionally, the satellite assistance information includes at least one of the following:

[0328] ephemeris information;

[0329] Epoch time.

[0330] Optionally, the target cell belonging to the tracking area of ​​the paging includes at least one of the following:

[0331] The coverage of the target cell and the coverage of the paging tracking area overlap;

[0332] The tracking area corresponding to the target cell and the tracking area of ​​the paging have an intersection, wherein the tracking area corresponding to the target cell is broadcast by the access network device.

[0333] Optionally, the paging terminal:

[0334] The terminal is paged via the non-terrestrial communication network NTN system.

[0335] The paging device can save air interface signaling.

[0336] The paging device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a network-side device.

[0337] The paging device provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in FIG3 and achieve the same technical effect. To avoid repetition, it will not be described here.

[0338] Please refer to FIG6 , which is a structural diagram of another paging device provided in an embodiment of the present application. As shown in FIG6 , the paging device 600 includes:

[0339] A determining module 601 is configured to determine, based on the second information, an action of sending a paging message to an access network device;

[0340] The second information includes at least one of the following:

[0341] second time-related information, where the second time-related information is used to indicate the time when the access network device belongs to the registration area of ​​the terminal;

[0342] Related information about the second area, where the second area is used to indicate the area of ​​an overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal.

[0343] Optionally, the second time-related information includes at least one of the following:

[0344] The remaining time that the access network device belongs to the registration area of ​​the terminal;

[0345] The time when the access network device stops belonging to the registration area of ​​the terminal;

[0346] or,

[0347] The second region area information includes at least one of the following:

[0348] The reference location of the access network device;

[0349] at least one second reference position;

[0350] The second reference location is a reference location corresponding to at least one tracking area of ​​the registration area.

[0351] Optionally, the determination module 601 is configured to:

[0352] If the second condition is met, sending a paging message to the access network device;

[0353] If the second condition is not met, no paging message is sent to the access network device.

[0354] Optionally, when the second time-related information includes a remaining time during which the access network device belongs to a registration area of ​​the terminal, the second condition includes that the remaining time is greater than or equal to a fifth threshold;

[0355] or,

[0356] When the second time-related information includes the time when the access network device stops belonging to the registration area of ​​the terminal, the second condition includes that the current time is less than a second offset value from the time when the access network device stops belonging to the registration area of ​​the terminal, wherein the second offset value is greater than or equal to a sixth threshold;

[0357] or,

[0358] The second condition includes that the area of ​​the overlapping region is greater than or equal to a seventh threshold.

[0359] Optionally, the overlapping area being greater than or equal to a seventh threshold includes at least one of the following:

[0360] The distance between the reference position of the access network device and any second reference position is less than or equal to an eighth threshold;

[0361] The distances between the reference position of the access network device and the multiple second reference positions are all less than or equal to an eighth threshold;

[0362] The second reference location is a reference location corresponding to at least one tracking area of ​​the registration area.

[0363] Optionally, the area-related information of the second region is determined by any of the following methods:

[0364] Pre-configured, obtained through the access network, and determined by the core network device;

[0365] Alternatively, the second time-related information is determined by any of the following methods:

[0366] Pre-configured, obtained through the access network, and determined by the core network device.

[0367] Optionally, the device further comprises:

[0368] The first receiving module is configured to obtain third information from an access network, where the third information is used to determine information related to the area of ​​the second region.

[0369] Optionally, the third information includes at least one of the following:

[0370] Satellite aiding information;

[0371] The reference location of the access network device;

[0372] at least one second reference position;

[0373] The second reference location is a reference location corresponding to at least one tracking area of ​​the registration area.

[0374] Optionally, the core network device determines the second time-related information based on at least one of the following:

[0375] Satellite aiding information;

[0376] Mapping relationship between tracking areas and geographic locations;

[0377] or,

[0378] The core network device determines the second region area related information based on at least one of the following:

[0379] Satellite aiding information;

[0380] Mapping between tracking areas and geographic locations.

[0381] Optionally, the method further includes:

[0382] The second receiving module is configured to obtain fourth information from the access network, where the fourth information is used to determine the second time-related information.

[0383] Optionally, the fourth information includes at least one of the following:

[0384] Satellite auxiliary information, tracking area information covered by the access network device in the future, time information associated with the tracking area information covered by the access network device in the future, and time information when the access network device does not belong to the registration area of ​​the terminal.

[0385] Optionally, the satellite assistance information includes at least one of the following:

[0386] Satellite ephemeris information;

[0387] Epoch time.

[0388] Optionally, the access network device belongs to a registration area of ​​the terminal including at least one of the following:

[0389] The coverage area of ​​the access network device and the registration area of ​​the terminal intersect;

[0390] The tracking area managed by the access network device and the registration area of ​​the terminal overlap.

[0391] Optionally, the sending a paging message includes:

[0392] The paging message is sent via the non-terrestrial communication network NTN system.

[0393] The paging device can save air interface signaling.

[0394] The paging device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a network-side device.

[0395] The paging device provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in FIG4 and achieve the same technical effect. To avoid repetition, it will not be described here.

[0396] Optionally, as shown in Figure 7, an embodiment of the present application further provides a communication device 700, including a processor 701 and a memory 702, wherein the memory 702 stores a program or instruction that can be run on the processor 701. For example, when the communication device 700 is a first device, the program or instruction is executed by the processor 701 to implement the various steps of the above-mentioned paging method embodiment and achieve the same technical effect. When the communication device 700 is a second device, the program or instruction is executed by the processor 701 to implement the various steps of the above-mentioned perception measurement result receiving method embodiment and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0397] An embodiment of the present application also provides a communication device, including a processor and a communication interface, wherein the communication interface is used to receive a paging message, the paging message carries paging area information, and the paging area information is used to indicate the tracking area of ​​the paging; the communication interface or the processor is used to determine the behavior of the paging terminal in the target cell based on the first information, and the first information includes at least one of the following: first time-related information, the first time-related information is used to indicate the time when the target cell belongs to the tracking area of ​​the paging; first area-related information, the first area-related information is used to indicate the area of ​​the overlapping area between the coverage of the target cell and the coverage of the tracking area of ​​the paging. This communication device embodiment corresponds to the above-mentioned paging method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this communication device embodiment and can achieve the same technical effect.

[0398] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 8, the network-side device 800 includes an antenna 801, a radio frequency device 802, a baseband device 803, a processor 804, and a memory 805. Antenna 801 is connected to radio frequency device 802. In the uplink direction, radio frequency device 802 receives information via antenna 801 and sends the received information to baseband device 803 for processing. In the downlink direction, baseband device 803 processes the information to be transmitted and sends it to radio frequency device 802. Radio frequency device 802 processes the received information and then sends it through antenna 801.

[0399] The paging method in the above embodiment may be implemented in the baseband device 803 , which includes a baseband processor.

[0400] The baseband device 803 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 8, one of which is, for example, a baseband processor, which is connected to the memory 805 through a bus interface to call the program in the memory 805 and execute the device operations shown in the above method embodiment.

[0401] The device may further include a network interface 806 , which may be, for example, a Common Public Radio Interface (CPRI).

[0402] Specifically, the device 800 of the embodiment of the present application also includes: instructions or programs stored in the memory 805 and executable on the processor 804. The processor 804 calls the instructions or programs in the memory 805 to execute the methods executed by the modules shown in FIG5 and achieve the same technical effect. To avoid repetition, they will not be elaborated here.

[0403] The radio frequency device 802 is used to receive a paging message, where the paging message carries paging area information, where the paging area information is used to indicate a tracking area for the paging;

[0404] The processor 804 or the radio frequency device 802 is configured to determine an action of paging the terminal in the target cell based on first information, where the first information includes at least one of the following:

[0405] first time related information, where the first time related information is used to indicate the time when the target cell belongs to the tracking area of ​​the paging;

[0406] The first area-related information is used to indicate the area of ​​an overlapping area between the coverage of the target cell and the coverage of the paging tracking area.

[0407] Optionally, the first time-related information includes at least one of the following:

[0408] The remaining time that the target cell belongs to the tracking area of ​​the paging;

[0409] The time when the target cell stops belonging to the tracking area of ​​the paging;

[0410] or,

[0411] The first region area related information includes at least one of the following:

[0412] a reference location of the target cell;

[0413] at least one first reference position;

[0414] The first reference location is a reference location corresponding to at least one of the paging tracking areas.

[0415] Optionally, determining an action of paging the terminal in the target cell based on the first information includes at least one of the following:

[0416] If the target cell satisfies a first condition, paging the terminal in the target cell;

[0417] If the target cell does not satisfy the first condition, the terminal is not paged in the target cell.

[0418] Optionally, in a case where the first time-related information includes a remaining time during which the target cell belongs to the tracking area of ​​the paging, the first condition includes that the remaining time is greater than or equal to a first threshold;

[0419] or,

[0420] When the first time-related information includes the time when the target cell stops belonging to the tracking area of ​​the paging, the first condition includes that the current time is less than a first offset value from the time when the target cell stops belonging to the tracking area of ​​the paging, wherein the first offset value is greater than or equal to a second threshold;

[0421] or,

[0422] The first condition includes that the area of ​​the overlapping region is greater than or equal to a third threshold.

[0423] Optionally, the area of ​​the overlapping region being greater than or equal to a third threshold includes at least one of the following:

[0424] The distance between the reference position of the target cell and any first reference position is less than or equal to a fourth threshold;

[0425] The distances between the reference position of the target cell and the multiple first reference positions are all less than or equal to a fourth threshold;

[0426] The first reference location is a reference location corresponding to at least one of the paging tracking areas.

[0427] Optionally, the first region area related information is determined by any of the following methods:

[0428] Acquired and preconfigured by core network equipment and determined by the access network equipment;

[0429] or,

[0430] The first time related information is determined by any of the following methods:

[0431] It is obtained and pre-configured through the core network equipment and determined by the access network equipment.

[0432] Optionally, the network-side device determines the first time-related information based on at least one of the following:

[0433] Satellite aiding information;

[0434] Mapping relationship between tracking areas and geographic locations;

[0435] or,

[0436] The access network device determines the first region area related information based on at least one of the following:

[0437] Satellite aiding information;

[0438] Mapping between tracking areas and geographic locations.

[0439] Optionally, the satellite assistance information includes at least one of the following:

[0440] ephemeris information;

[0441] Epoch time.

[0442] Optionally, the target cell belonging to the tracking area of ​​the paging includes at least one of the following:

[0443] The coverage of the target cell and the coverage of the paging tracking area overlap;

[0444] The tracking area corresponding to the target cell and the tracking area of ​​the paging have an intersection, wherein the tracking area corresponding to the target cell is broadcast by the access network device.

[0445] Optionally, the paging terminal:

[0446] The terminal is paged via the non-terrestrial communication network NTN system.

[0447] The above-mentioned device can save air interface signaling.

[0448] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above-mentioned method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0449] It should be noted that the above-mentioned device can also implement the steps in the method shown in FIG3 , or can implement the method executed by each module shown in FIG8 .

[0450] The present application also provides an embodiment of a device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown in FIG4 . This device embodiment corresponds to the aforementioned signal measurement method embodiment, and each implementation process and implementation method of the aforementioned method embodiment are applicable to this device embodiment and can achieve the same technical effects.

[0451] An embodiment of the present application also provides a device, including a processor and a communication interface, wherein the communication interface or the processor is used to determine an action of sending a paging message to an access network device based on second information; wherein the second information includes at least one of the following: second time-related information, the second time-related information is used to indicate the time when the access network device belongs to the registration area of ​​the terminal; second area area-related information, the second area area is used to indicate the area of ​​the overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal.

[0452] Specifically, the embodiment of the present application further provides a network-side device, which is a second device. As shown in Figure 9, the network-side device 900 includes: a processor 901, a network interface 902, and a memory 903. The network interface 902 is, for example, a Common Public Radio Interface (CPRI).

[0453] Specifically, the network side device 900 of the embodiment of the present application also includes: instructions or programs stored in the memory 903 and can be run on the processor 901. The processor 901 calls the instructions or programs in the memory 903 to execute the methods executed by each module shown in Figure 6 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0454] The processor 901 or the network interface 902 is configured to determine, based on the second information, an action of sending a paging message to the access network device;

[0455] The second information includes at least one of the following:

[0456] second time-related information, where the second time-related information is used to indicate the time when the access network device belongs to the registration area of ​​the terminal;

[0457] Related information about the second area, where the second area is used to indicate the area of ​​an overlapping area between the coverage of the access network device and the coverage of the registration area of ​​the terminal.

[0458] Optionally, the second time-related information includes at least one of the following:

[0459] The remaining time that the access network device belongs to the registration area of ​​the terminal;

[0460] The time when the access network device stops belonging to the registration area of ​​the terminal;

[0461] or,

[0462] The second region area information includes at least one of the following:

[0463] The reference location of the access network device;

[0464] at least one second reference position;

[0465] The second reference location is a reference location corresponding to at least one tracking area of ​​the registration area.

[0466] Optionally, the action of determining, based on the second information, sending a paging message to the access network device includes at least one of the following:

[0467] If the second condition is met, sending a paging message to the access network device;

[0468] If the second condition is not met, no paging message is sent to the access network device.

[0469] Optionally, when the second time-related information includes a remaining time during which the access network device belongs to a registration area of ​​the terminal, the second condition includes that the remaining time is greater than or equal to a fifth threshold;

[0470] or,

[0471] When the second time-related information includes the time when the access network device stops belonging to the registration area of ​​the terminal, the second condition includes that the current time is less than a second offset value from the time when the access network device stops belonging to the registration area of ​​the terminal, wherein the second offset value is greater than or equal to a sixth threshold;

[0472] or,

[0473] The second condition includes that the area of ​​the overlapping region is greater than or equal to a seventh threshold.

[0474] Optionally, the overlapping area being greater than or equal to a seventh threshold includes at least one of the following:

[0475] The distance between the reference position of the access network device and any second reference position is less than or equal to an eighth threshold;

[0476] The distances between the reference position of the access network device and the multiple second reference positions are all less than or equal to an eighth threshold;

[0477] The second reference location is a reference location corresponding to at least one tracking area of ​​the registration area.

[0478] Optionally, the area-related information of the second region is determined by any of the following methods:

[0479] Pre-configured, obtained through the access network, and determined by the core network device;

[0480] Alternatively, the second time-related information is determined by any of the following methods:

[0481] Pre-configured, obtained through the access network, and determined by the core network device.

[0482] Optionally, the network interface 902 is further configured to:

[0483] Acquire third information from the access network, where the third information is used to determine information related to the area of ​​the second region.

[0484] Optionally, the third information includes at least one of the following:

[0485] Satellite aiding information;

[0486] The reference location of the access network device;

[0487] at least one second reference position;

[0488] The second reference location is a reference location corresponding to at least one tracking area of ​​the registration area.

[0489] Optionally, the network-side device determines the second time-related information based on at least one of the following:

[0490] Satellite aiding information;

[0491] Mapping relationship between tracking areas and geographic locations;

[0492] or,

[0493] The core network device determines the second region area related information based on at least one of the following:

[0494] Satellite aiding information;

[0495] Mapping between tracking areas and geographic locations.

[0496] Optionally, the network interface 902 is further configured to:

[0497] The core network device obtains fourth information from the access network, where the fourth information is used to determine the second time-related information.

[0498] Optionally, the fourth information includes at least one of the following:

[0499] Satellite auxiliary information, tracking area information covered by the access network device in the future, time information associated with the tracking area information covered by the access network device in the future, and time information when the access network device does not belong to the registration area of ​​the terminal.

[0500] Optionally, the satellite assistance information includes at least one of the following:

[0501] Satellite ephemeris information;

[0502] Epoch time.

[0503] Optionally, the access network device belongs to a registration area of ​​the terminal including at least one of the following:

[0504] The coverage area of ​​the access network device and the registration area of ​​the terminal intersect;

[0505] The tracking area managed by the access network device and the registration area of ​​the terminal overlap.

[0506] Optionally, the sending a paging message includes:

[0507] The paging message is sent via the non-terrestrial communication network NTN system.

[0508] The above-mentioned device can save air interface signaling.

[0509] An embodiment of the present application further provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned paging method embodiment is implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0510] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0511] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned paging method embodiment and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0512] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0513] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-mentioned paging method embodiment and can achieve the same technical effects. To avoid repetition, they are not described here.

[0514] An embodiment of the present application further provides a wireless communication system, including: an access network device and a core network device, wherein the access network device can be used to execute the steps of the paging method on the access network device side provided in the embodiment of the present application, and the core network device can be used to execute the steps of the paging method on the core network device side provided in the embodiment of the present application.

[0515] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0516] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0517] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A paging method, comprising: The access network device receives a paging message, where the paging message carries paging area information, where the paging area information is used to indicate a tracking area for the paging; The access network device determines, based on first information, an action of paging the terminal in the target cell, where the first information includes at least one of the following: first time related information, where the first time related information is used to indicate the time when the target cell belongs to the tracking area of the paging; The first area-related information is used to indicate the area of an overlapping area between the coverage of the target cell and the coverage of the paging tracking area.

2. The method according to claim 1, wherein The first time related information includes at least one of the following: The remaining time that the target cell belongs to the tracking area of the paging; The time when the target cell stops belonging to the tracking area of the paging; or, The first region area related information includes at least one of the following: a reference location of the target cell; at least one first reference position; The first reference location is a reference location corresponding to at least one of the paging tracking areas.

3. The method according to claim 1 or 2, wherein The access network device determines, based on the first information, an action of paging the terminal in the target cell, including at least one of the following: When the target cell satisfies the first condition, the access network device pages the terminal in the target cell; When the target cell does not satisfy the first condition, the access network device does not page the terminal in the target cell.

4. The method according to claim 3, wherein: In a case where the first time-related information includes a remaining time during which the target cell belongs to the tracking area of the paging, the first condition includes that the remaining time is greater than or equal to a first threshold; or, When the first time-related information includes the time when the target cell stops belonging to the tracking area of the paging, the first condition includes that the current time is less than a first offset value from the time when the target cell stops belonging to the tracking area of the paging, wherein the first offset value is greater than or equal to a second threshold; or, The first condition includes that the area of the overlapping region is greater than or equal to a third threshold.

5. The method according to claim 4, wherein: The area of the overlapping region being greater than or equal to the third threshold comprises at least one of the following: The distance between the reference position of the target cell and any first reference position is less than or equal to a fourth threshold; The distances between the reference position of the target cell and the multiple first reference positions are all less than or equal to a fourth threshold; The first reference location is a reference location corresponding to at least one of the paging tracking areas.

6. The method according to any one of claims 1 to 5, wherein The information related to the area of the first region is determined by any of the following methods: Acquired and preconfigured by core network equipment and determined by the access network equipment; or, The first time related information is determined by any of the following methods: It is obtained and pre-configured through the core network equipment and determined by the access network equipment.

7. The method according to any one of claims 1 to 6, wherein The access network device determines the first time-related information based on at least one of the following: Satellite aiding information; Mapping relationship between tracking areas and geographic locations; or, The access network device determines the first region area related information based on at least one of the following: Satellite aiding information; Mapping between tracking areas and geographic locations.

8. The method of claim 7, wherein: The satellite assistance information includes at least one of the following: ephemeris information; Epoch time.

9. The method according to any one of claims 1 to 8, wherein The target cell belongs to the tracking area of the paging, including at least one of the following: The coverage of the target cell and the coverage of the paging tracking area overlap; The tracking area corresponding to the target cell and the tracking area of the paging have an intersection, wherein the tracking area corresponding to the target cell is broadcast by the access network device.

10. The method according to any one of claims 1 to 9, wherein The paging terminal includes: The terminal is paged via the non-terrestrial communication network NTN system.

11. A paging method, comprising: The core network device determines, based on the second information, an action of sending a paging message to the access network device; The second information includes at least one of the following: second time-related information, where the second time-related information is used to indicate the time when the access network device belongs to the registration area of the terminal; Related information about the second area, where the second area is used to indicate the area of an overlapping area between the coverage of the access network device and the coverage of the registration area of the terminal.

12. The method of claim 11, wherein: The second time related information includes at least one of the following: The remaining time that the access network device belongs to the registration area of the terminal; The time when the access network device stops belonging to the registration area of the terminal; or, The second region area information includes at least one of the following: The reference location of the access network device; at least one second reference position; The second reference location is a reference location corresponding to at least one tracking area of the registration area.

13. The method according to claim 11 or 12, wherein: The core network device determines, based on the second information, an action of sending a paging message to the access network device, including at least one of the following: If the second condition is met, sending a paging message to the access network device; If the second condition is not met, no paging message is sent to the access network device.

14. The method of claim 13, wherein: In a case where the second time-related information includes a remaining time during which the access network device belongs to a registration area of the terminal, the second condition includes that the remaining time is greater than or equal to a fifth threshold; or, When the second time-related information includes the time when the access network device stops belonging to the registration area of the terminal, the second condition includes that the current time is less than a second offset value from the time when the access network device stops belonging to the registration area of the terminal, wherein the second offset value is greater than or equal to a sixth threshold; or, The second condition includes that the area of the overlapping region is greater than or equal to a seventh threshold.

15. The method of claim 14, wherein: The overlapping area being greater than or equal to the seventh threshold includes at least one of the following: The distance between the reference position of the access network device and any second reference position is less than or equal to an eighth threshold; The distances between the reference position of the access network device and the multiple second reference positions are all less than or equal to an eighth threshold; The second reference location is a reference location corresponding to at least one tracking area of the registration area.

16. The method according to any one of claims 11 to 15, wherein The information related to the area of the second region is determined by any of the following methods: Pre-configured, obtained through the access network, and determined by the core network device; Alternatively, the second time-related information is determined by any of the following methods: Pre-configured, obtained through the access network, and determined by the core network device.

17. The method according to any one of claims 11 to 16, further comprising: The core network device obtains third information from the access network, where the third information is used to determine information related to the area of the second region.

18. The method of claim 17, wherein: The third information includes at least one of the following: Satellite aiding information; The reference location of the access network device; at least one second reference position; The second reference location is a reference location corresponding to at least one tracking area of the registration area.

19. The method according to any one of claims 11 to 18, wherein The core network device determines the second time-related information based on at least one of the following: Satellite aiding information; Mapping relationship between tracking areas and geographic locations; or, The core network device determines the second region area related information based on at least one of the following: Satellite aiding information; Mapping between tracking areas and geographic locations.

20. The method of any one of claims 11 to 19, further comprising: The core network device obtains fourth information from the access network, where the fourth information is used to determine the second time-related information.

21. The method of claim 20, wherein: The fourth information includes at least one of the following: Satellite auxiliary information, tracking area information covered by the access network device in the future, time information associated with the tracking area information covered by the access network device in the future, and time information when the access network device does not belong to the registration area of the terminal.

22. The method of claim 18, 19 or 21, wherein The satellite assistance information includes at least one of the following: Satellite ephemeris information; Epoch time.

23. The method according to any one of claims 11 to 22, wherein The access network device belongs to the registration area of the terminal, which includes at least one of the following: The coverage area of the access network device and the registration area of the terminal intersect; The tracking area managed by the access network device and the registration area of the terminal overlap.

24. The method of any one of claims 11 to 23, wherein The sending of the paging message includes: The paging message is sent via the non-terrestrial communication network NTN system.

25. A paging device comprising: A receiving module, configured to receive a paging message, wherein the paging message carries paging area information, and the paging area information is used to indicate a tracking area for paging; a determining module, configured to determine an action of paging the terminal in the target cell based on first information, where the first information includes at least one of the following: first time related information, where the first time related information is used to indicate the time when the target cell belongs to the tracking area of the paging; The first area-related information is used to indicate the area of an overlapping area between the coverage of the target cell and the coverage of the paging tracking area.

26. The apparatus of claim 25, wherein: The determining module is used for at least one of the following: If the target cell satisfies a first condition, paging the terminal in the target cell; If the target cell does not satisfy the first condition, the terminal is not paged in the target cell.

27. A paging device comprising: a determining module, configured to determine an action of sending a paging message to the access network device based on the second information; The second information includes at least one of the following: second time-related information, where the second time-related information is used to indicate the time when the access network device belongs to the registration area of the terminal; Related information about the second area, where the second area is used to indicate the area of an overlapping area between the coverage of the access network device and the coverage of the registration area of the terminal.

28. The apparatus of claim 27, wherein: The determining module is used for at least one of the following: If the second condition is met, sending a paging message to the access network device; If the second condition is not met, no paging message is sent to the access network device.

29. A network side device, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the paging method according to any one of claims 1 to 10 are implemented, and when the program or instruction is executed by the processor, the steps of the paging method according to any one of claims 11 to 24 are implemented.

30. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the steps of the paging method according to any one of claims 1 to 10, or implements the steps of the paging method according to any one of claims 11 to 24.

31. A computer program / program product, wherein the computer program / program product is stored in a storage medium and is executed by at least one processor to implement the steps of the paging method according to any one of claims 1 to 10, or the steps of the paging method according to any one of claims 11 to 24.

Images