CN116015404A - Satellite paging control method, device and medium based on terminal position prediction - Google Patents
Satellite paging control method, device and medium based on terminal position prediction Download PDFInfo
- Publication number
- CN116015404A CN116015404A CN202211589547.0A CN202211589547A CN116015404A CN 116015404 A CN116015404 A CN 116015404A CN 202211589547 A CN202211589547 A CN 202211589547A CN 116015404 A CN116015404 A CN 116015404A
- Authority
- CN
- China
- Prior art keywords
- terminal
- satellite
- information
- network element
- positioning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000004891 communication Methods 0.000 claims abstract description 53
- 238000013528 artificial neural network Methods 0.000 claims abstract description 19
- 238000004364 calculation method Methods 0.000 claims description 9
- 230000003068 static effect Effects 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 3
- 230000006870 function Effects 0.000 description 10
- 230000011664 signaling Effects 0.000 description 10
- 230000003993 interaction Effects 0.000 description 9
- 230000001133 acceleration Effects 0.000 description 4
- 238000004590 computer program Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000012517 data analytics Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a satellite paging control method, equipment and medium based on terminal position prediction, which mainly comprise the following steps: the core network establishes a communication session with the terminal and collects terminal information; predicting the expected position of the terminal at the target time according to the terminal information; judging whether the terminal is in the coverage area of the satellite at the target moment according to the expected position of the terminal; if the terminal is not in the coverage area of the satellite at the target moment, the satellite is controlled to stop paging the terminal when the communication session between the core network and the terminal is disconnected. According to the method, the expected position of the terminal at the target moment is predicted through the multi-layer neural network, and the position information, the prediction result and the coverage area of the satellite, which are reported by the terminal, are analyzed by using the NWDAF network element; whether the terminal leaves the coverage area of the satellite at the target time can be accurately judged, so that the satellite network is informed in advance to stop repeatedly paging the terminal when the terminal is disconnected, and the paging failure times of the satellite are reduced.
Description
Technical Field
The invention relates to the technical field of satellite communication, in particular to a satellite paging control method, device and medium based on terminal position prediction.
Background
With the development of satellite communications, satellites are increasingly being served by communication links. Because the coverage areas of different satellites are different, taking a high-orbit satellite and a low-orbit satellite as examples, the high-orbit satellite has larger coverage area because of higher orbit height; whereas low-orbit satellites have correspondingly smaller coverage due to their lower orbit heights.
For a mobile terminal, once the mobile terminal leaves the coverage area of a satellite, the phenomenon that the terminal cannot receive a paging signal of the satellite, and the connection between the terminal and a core network is interrupted occurs. However, the satellite cannot sense whether the terminal leaves the coverage of the satellite, so the satellite can continuously send paging signals to the terminal to try to connect the terminal; causing problems of occupying satellite channel resources and consuming satellite energy.
Disclosure of Invention
In view of this, the embodiments of the present invention provide a satellite paging control method, apparatus and medium based on terminal position prediction.
The first aspect of the present invention provides a satellite paging control method based on terminal position prediction, comprising the steps of:
the core network establishes a communication session with the terminal and collects terminal information; the terminal information comprises a terminal position and a terminal moving speed;
the core network predicts the expected position of the terminal at the target time according to the terminal information;
the core network judges whether the terminal is in the coverage area of the satellite at the target moment according to the expected position of the terminal;
if the terminal is not in the coverage area of the satellite at the target moment, the core network controls the satellite to stop paging the terminal when the communication session between the core network and the terminal is disconnected.
Further, the step of establishing a communication session with the terminal and collecting terminal information is completed by an AMF network element; the terminal information is obtained through the following communication steps:
the AMF network element generates a terminal positioning call request and sends the positioning call request to the LMF network element;
the LMF network element determines a positioning access type and a positioning method used for positioning the terminal according to the terminal positioning call request, generates downlink positioning information and sends the downlink positioning information to the AMF network element;
the AMF network element sends the downlink positioning information to the terminal, receives the uplink positioning information transmitted by the terminal, and sends the uplink positioning information to the LMF network element;
and the LMF network element analyzes the uplink positioning information to obtain terminal information.
Further, before the AMF network element sends the downlink positioning information to the terminal, the method further comprises the following steps:
the AMF network element judges the current state of the communication session, wherein the current state of the communication session comprises an online state and a standby state;
when the current state of the communication session is in a standby state, the AMF network element transmits a wake-up request to the terminal, and wakes up the communication session to be in an online state;
and when the current state of the communication session is in an online state, the step of sending the downlink positioning information to the terminal is executed.
Further, after receiving the downlink positioning information, the terminal performs positioning measurement and/or position calculation according to the positioning access type and the positioning method specified by the downlink positioning information to obtain terminal information and encapsulates the terminal information in the uplink positioning information; sending the uplink positioning information to an AMF network element;
when the downlink positioning information designates a plurality of positioning access types and positioning methods, the terminal respectively performs positioning measurement and/or position calculation according to each positioning access type and positioning method to obtain a plurality of terminal information and respectively packages the terminal information in a plurality of uplink positioning information; and sending the plurality of uplink positioning information to the AMF network element.
Further, before the step of sending the uplink positioning information to the AMF network element or the step of sending the plurality of uplink positioning information to the AMF network element, the method further includes the following steps:
the terminal judges the current state of a communication session, wherein the current state of the communication session comprises an online state and a standby state;
when the current state of the communication session is in a standby state, the terminal transmits a wake-up request to the AMF network element, and wakes up the communication session to be in an online state;
and when the current state of the communication session is in an online state, executing the step of sending the uplink positioning information to the AMF network element or the step of sending a plurality of uplink positioning information to the AMF network element.
Further, the predicting the expected position of the terminal at the target time according to the terminal information is accomplished through a multi-layer neural network; the multi-layer neural network is arranged on an NWDAF network element, and the NWDAF network element acquires terminal information through an LMF network element;
different characteristic weights are respectively set for each piece of terminal information in the multi-layer neural network;
after the terminal information is input into the multi-layer neural network, the multi-layer neural network obtains the expected position of the terminal at the target moment by carrying out weighted calculation on each piece of terminal information, and outputs the expected position of the terminal at the target moment as a prediction result.
Further, the step of judging whether the terminal is within the coverage area of the satellite at the target moment according to the expected position of the terminal specifically includes the following steps:
the AMF network element establishes a communication session with a satellite and sends a satellite information acquisition request to the satellite;
the AMF network element acquires satellite information reported by a satellite; the satellite information includes satellite coverage;
the NWDAF network element sends an information subscription request to the AMF network element; the information subscription request is used for subscribing satellite information to the AMF network element;
the AMF network element sends satellite information to the NWDAF network element;
the NWDAF network element judges whether the terminal is in the coverage area of the satellite at the target moment according to the expected position of the terminal and the coverage area of the satellite; and sending the judgment result to the AMF network element.
Further, the satellite coverage includes a static range or a dynamic range;
when the satellite coverage is a static range, the NWDAF network element forms a fixed longitude and latitude coordinate interval according to the longitude and latitude coordinates of the edge of the satellite coverage; the judgment of whether the terminal is in the coverage area of the satellite at the target time is completed by comparing whether the longitude and latitude coordinates of the expected position of the terminal are in the longitude and latitude coordinate interval;
when the satellite coverage is a dynamic range, the NWDAF network element generates a satellite coverage longitude and latitude coordinate change interval related to a time period to obtain a satellite coverage longitude and latitude interval under a target time; and comparing whether the longitude and latitude coordinates of the expected position of the terminal are positioned in the longitude and latitude coordinate interval under the target time, and finishing the judgment of whether the terminal is positioned in the coverage area of the satellite under the target time.
The second aspect of the invention discloses an electronic device, which is applied to a core network and comprises a processor and a memory;
the memory is used for storing programs;
the processor executes the program to realize a satellite paging control method based on terminal position prediction.
A third aspect of the present invention discloses a computer-readable storage medium, wherein the storage medium stores a program, and the program is executed by a processor to implement a satellite paging control method based on terminal position prediction.
Embodiments of the present invention also disclose a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The computer instructions may be read from a computer-readable storage medium by a processor of a computer device, and executed by the processor, to cause the computer device to perform the foregoing method.
The embodiment of the invention has the following beneficial effects: according to the method, the expected position of the terminal at the target moment is predicted through the multi-layer neural network, and the position information, the prediction result and the coverage area of the satellite, which are reported by the terminal, are analyzed by using the NWDAF network element; the method can accurately judge whether the terminal leaves the coverage area of the satellite at the target time, so that the satellite network is informed in advance to stop repeatedly paging the terminal when the terminal is disconnected, paging failure times are reduced, and network resources are saved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of a terminal moving relative to satellite coverage;
FIG. 2 is a basic implementation flow chart of a satellite paging control method, apparatus and medium based on terminal position prediction of the present invention;
FIG. 3 is a flow chart of signaling interaction between a core network and a terminal in a device and a medium, according to the satellite paging control method based on terminal position prediction of the present invention;
fig. 4 is a signaling interaction flow chart of a core network and a satellite in equipment and a medium of the satellite paging control method based on terminal position prediction.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
Fig. 1 shows a schematic diagram of a terminal moving relative to satellite coverage. As shown in fig. 1, a set of orbiting satellites may be composed of a plurality of satellites, and the coverage areas of the satellites may not be adjacent to each other, i.e., the terminal may leave the coverage area of the previous satellite and not enter the coverage area of the next satellite, where the terminal (UE) is not in the coverage area of any satellite in orbit, so that the terminal cannot establish a communication connection with the satellite, and the communication link is interrupted. Particularly when the terminal is in standby mode, the satellite may still consider the terminal as accessible because the satellite is not able to obtain information about the terminal in standby mode, and thus the satellite may continually send paging signals to the terminal in an attempt to establish a communication link with the terminal. However, in practice, these paging signals cannot necessarily be received by the terminal due to coverage of the terminal and the detached satellites, and thus, unnecessary occupation of channels and unnecessary consumption of satellite energy occur.
In order to solve this problem, the present embodiment proposes a satellite paging control method based on terminal position prediction, as shown in fig. 2, including the following steps:
s1, a core network establishes a communication session with a terminal and collects terminal information; the terminal information comprises a terminal position and a terminal moving speed;
s2, the core network predicts the expected position of the terminal at the target time according to the terminal information;
s3, the core network judges whether the terminal is in the coverage area of the satellite at the target moment according to the expected position of the terminal;
s4, if the terminal is not in the coverage area of the satellite at the target moment, when the communication session between the core network and the terminal is disconnected, the core network controls the satellite to stop paging the terminal.
In this embodiment, the key to solve the above technical problems is how the terminal and the satellite report information and what information to report; therefore, the terminal reporting information determined in this embodiment includes the terminal position and the terminal moving speed, as shown in table 1 specifically:
| terminal numbering | Longitude and latitude | Latitude of latitude | Instantaneous speed | Instantaneous acceleration |
| 1 | 101.234 | 108.234 | 500KM/h | 40KM/h |
| 2 | 123.234 | 126.234 | 250KM/h | 20KM/h |
| ... | ... | ... | ... | ... |
Table 1.
The embodiment determines the position of the terminal according to the current longitude and latitude of the terminal, establishes an equation about the movement of the terminal by combining the instantaneous speed and the instantaneous acceleration of the terminal, and calculates the expected position of the terminal at the target time according to the equation.
In step S1, the terminal information needs to be obtained through a signaling interaction flow between the core network and the terminal, and the specific steps are shown in fig. 3.
In step S1, the signaling interaction with the terminal is mainly obtained by an AMF network element (Access and Mobi l ity Management Funct ion ) in the core network, and the AMF network element establishes a communication link with the terminal through an NG-RAN (Next Generat ion Rad io Access Network ) located on a satellite, so as to generate signaling interaction to obtain terminal information. After the AMF network element obtains the terminal information, the terminal information is sent to the LMF network element (Locat ion Management Funct ion, positioning management function), and the LMF network element analyzes the terminal information to obtain the longitude, latitude, instantaneous speed and instantaneous acceleration of the terminal.
The specific signaling interaction flow is as follows:
101, an AMF network element generates a terminal positioning call request and sends the positioning call request to an LMF network element;
determining a positioning access type and a positioning method used for positioning the terminal by the LMF network element according to the terminal positioning calling request;
the LMF network element generates downlink positioning information and sends the downlink positioning information to the AMF network element;
the AMF network element sends the downlink positioning information to the terminal;
the AMF network element receives the uplink positioning information transmitted by the terminal;
the AMF network element sends the uplink positioning information to the LMF network element; and the LMF network element analyzes the uplink positioning information to obtain terminal information.
Since the scene of the terminal accessing the core network is not fixed, the access type and the positioning method used by the terminal positioning are different. In this embodiment, various positioning access types are set in the LMF network element for selection according to the intervention scenario of the terminal. The positioning access types can be mainly divided into two types, namely 3GPP access and Non-3GPP access. The 3GPP access can be suitable for access scenes such as gNB, eNB and the like, and the Non-3GPP access can be suitable for access scenes such as WI FI and the like. The positioning method preset by the LMF network element in the embodiment comprises two types of terminal body acquisition positioning and satellite gateway acquisition positioning. The terminal body acquires positioning and mainly acquires position information from the terminal by using an LPP protocol; the satellite gateway obtains positioning information from a gateway interface such as NG-RAN or N3IWF/TNGF/W-AGF mainly by using NRPPa protocol.
In this embodiment, after receiving downlink positioning information generated by an LMF network element, a terminal performs positioning measurement and/or position calculation according to a positioning access type and a positioning method specified by the downlink positioning information, so as to obtain terminal information and encapsulate the terminal information in uplink positioning information; and sending the uplink positioning information to the AMF network element.
In some embodiments, the terminal may be in a standby (idle) state resulting in the communication link of the terminal with the satellite being put aside. The terminal in the standby state cannot receive and send the signaling, and the terminal needs to be awakened to continue the signaling interaction. In this embodiment, the wake-up of the terminal is divided into two types, namely, a network trigger Service Request (Service Request) initiated by the AMF and a terminal trigger Service Request initiated by the terminal.
The network triggering service request flow comprises the following steps:
the method comprises the steps that an AMF network element judges the current state of a communication session, wherein the current state of the communication session comprises an online state and a standby state;
when the current state of the communication session is in a standby state, the AMF network element transmits a wake-up request to the terminal, and wakes up the communication session to be in an online state.
The terminal triggering service request flow includes:
SP2, the terminal judges the current state of the communication session, wherein the current state of the communication session comprises an online state and a standby state; when the current state of the communication session is in a standby state, the terminal transmits a wake-up request to the AMF network element, and wakes up the communication session to be in an online state.
In step S2, the expected position of the terminal at the target time is predicted according to the terminal information, specifically, by a multi-Layer neural network (Mu lt i-Layer persistence). In this embodiment, the multi-layer neural network is disposed in an NWDAF network element (Network Data Ana lyt ics Funct ion, network data analysis function), and the NWDAF network element obtains terminal information through an LMF network element;
different characteristic weights are respectively set for each piece of terminal information in the multi-layer neural network;
after the terminal information is input into the multi-layer neural network, the multi-layer neural network obtains the expected position of the terminal at the target moment by carrying out weighted calculation on each piece of terminal information, and outputs the expected position of the terminal at the target moment as a prediction result.
The multi-layer neural network employed in the present embodiment can be expressed in the form of a formula as:
wherein the method comprises the steps of
To predict the result, x [0 ]]To x [ p ]]For terminal information (longitude, latitude, instantaneous speed, instantaneous acceleration, etc.), w [0 ]]To w [ p ]]Characteristic weights representing the information of each terminal; and obtaining the expected position of the terminal at the target time through weighted calculation.
In step S3, in addition to acquiring terminal information, coverage information of the satellite needs to be acquired, so that the core network needs to perform signaling interaction with the satellite. The signaling interaction flow is as shown in fig. 4:
the AMF network element establishes a communication session with a satellite, and sends a satellite information acquisition request to the satellite; acquiring satellite information reported by a satellite;
an nwdaf network element sends an information subscription request to an AMF network element; the information subscription request is used for subscribing satellite information to the AMF network element;
the AMF network element sends satellite information to the NWDAF network element;
judging whether the terminal is in the coverage area of the satellite at the target moment by the NWDAF network element according to the expected position of the terminal and the coverage area of the satellite;
the nwdaf network element sends the judgment result to the AMF network element.
The satellite information in this embodiment includes satellite coverage. Particularly, when the AMF network element needs to acquire a plurality of satellite coverage areas from a plurality of satellites, the ids of the satellites can be added into the satellite information to distinguish different satellite coverage areas, so that the satellite coverage areas of different satellites are prevented from being confused.
In this embodiment, for a satellite in geosynchronous orbit, the coverage of the satellite is substantially static (constant longitude and latitude); whereas in the case of other orbiting satellites, satellite coverage may vary periodically over time. It is therefore necessary to set different decision procedures for static or dynamic coverage.
When the satellite coverage is a static range, the NWDAF network element forms a fixed longitude and latitude coordinate interval according to the longitude and latitude coordinates of the edge of the satellite coverage; the judgment of whether the terminal is in the coverage area of the satellite at the target time is completed by comparing whether the longitude and latitude coordinates of the expected position of the terminal are in the longitude and latitude coordinate interval;
when the satellite coverage is a dynamic range, the NWDAF network element generates a satellite coverage longitude and latitude coordinate change interval related to a time period to obtain a satellite coverage longitude and latitude interval under a target time; and comparing whether the longitude and latitude coordinates of the expected position of the terminal are positioned in the longitude and latitude coordinate interval under the target time, and finishing the judgment of whether the terminal is positioned in the coverage area of the satellite under the target time. In this embodiment, the time period of the satellite with dynamic coverage can be queried through ephemeris, that is, the ephemeris information of the satellite is added to the satellite information to obtain the motion period of the satellite.
In step S4, if the terminal is not within the coverage area of the satellite at the target moment, the core network controls the satellite to stop paging the terminal when the communication session between the core network and the terminal is disconnected; to stop invalid paging of the satellite and reduce the number of failures. If the terminal is in the coverage area of the satellite at the target moment, the paging of the satellite is not controlled so as to establish a normal communication link between the terminal and the satellite.
In the embodiment of the invention, in order to make the paging process more reasonable and effective, thereby avoiding unnecessary paging, improving the success rate of satellite paging, the core network transmits the operation process of determining whether the terminal is in satellite coverage to the NWDAF for unified processing. And training and predicting the historical position and speed related information of the terminal through the multi-layer neural network. The NWDAF is used for integrating satellite ephemeris information and predicted position information of the terminal, so that whether the terminal is about to leave the satellite coverage area can be analyzed more accurately, on one hand, the satellite paging accuracy can be improved, and on the other hand, the operation resources of the satellite are saved.
Embodiments of the present invention also disclose a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The computer instructions may be read from a computer-readable storage medium by a processor of a computer device, and executed by the processor, to cause the computer device to perform the method shown in fig. 2.
In some alternative embodiments, the functions/acts noted in the block diagrams may occur out of the order noted in the operational illustrations. For example, two blocks shown in succession may in fact be executed substantially concurrently or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Furthermore, the embodiments presented and described in the flowcharts of the present invention are provided by way of example in order to provide a more thorough understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed, and in which sub-operations described as part of a larger operation are performed independently.
Furthermore, while the invention is described in the context of functional modules, it should be appreciated that, unless otherwise indicated, one or more of the described functions and/or features may be integrated in a single physical device and/or software module or one or more functions and/or features may be implemented in separate physical devices or software modules. It will also be appreciated that a detailed discussion of the actual implementation of each module is not necessary to an understanding of the present invention. Rather, the actual implementation of the various functional modules in the apparatus disclosed herein will be apparent to those skilled in the art from consideration of their attributes, functions and internal relationships. Accordingly, one of ordinary skill in the art can implement the invention as set forth in the claims without undue experimentation. It is also to be understood that the specific concepts disclosed are merely illustrative and are not intended to be limiting upon the scope of the invention, which is to be defined in the appended claims and their full scope of equivalents.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the embodiments described above, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are included in the scope of the present invention as defined in the appended claims.
Claims (10)
1. The satellite paging control method based on the terminal position prediction is characterized by comprising the following steps:
the core network establishes a communication session with the terminal and collects terminal information; the terminal information comprises a terminal position and a terminal moving speed;
the core network predicts the expected position of the terminal at the target time according to the terminal information;
the core network judges whether the terminal is in the coverage area of the satellite at the target moment according to the expected position of the terminal;
if the terminal is not in the coverage area of the satellite at the target moment, the core network controls the satellite to stop paging the terminal when the communication session between the core network and the terminal is disconnected.
2. The method for controlling satellite paging based on terminal position prediction according to claim 1, wherein the step of establishing a communication session with a terminal and collecting terminal information is performed by an AMF network element; the terminal information is obtained through the following communication steps:
the AMF network element generates a terminal positioning call request and sends the positioning call request to the LMF network element;
the LMF network element determines a positioning access type and a positioning method used for positioning the terminal according to the terminal positioning call request, generates downlink positioning information and sends the downlink positioning information to the AMF network element;
the AMF network element sends the downlink positioning information to the terminal, receives the uplink positioning information transmitted by the terminal, and sends the uplink positioning information to the LMF network element;
and the LMF network element analyzes the uplink positioning information to obtain terminal information.
3. The method for controlling satellite paging based on terminal position prediction according to claim 2, further comprising the steps of, before the AMF network element transmits the downlink positioning information to the terminal:
the AMF network element judges the current state of the communication session, wherein the current state of the communication session comprises an online state and a standby state;
when the current state of the communication session is in a standby state, the AMF network element transmits a wake-up request to the terminal, and wakes up the communication session to be in an online state;
and when the current state of the communication session is in an online state, the step of sending the downlink positioning information to the terminal is executed.
4. The satellite paging control method based on terminal position prediction according to claim 2, wherein after receiving the downlink positioning information, the terminal performs positioning measurement and/or position calculation according to a positioning access type and a positioning method specified by the downlink positioning information to obtain terminal information and encapsulates the terminal information in uplink positioning information; sending the uplink positioning information to an AMF network element;
when the downlink positioning information designates a plurality of positioning access types and positioning methods, the terminal respectively performs positioning measurement and/or position calculation according to each positioning access type and positioning method to obtain a plurality of terminal information and respectively packages the terminal information in a plurality of uplink positioning information; and sending the plurality of uplink positioning information to the AMF network element.
5. The method for controlling satellite paging based on terminal position prediction according to claim 4, further comprising the steps of, before the step of transmitting the uplink positioning information to the AMF network element or the step of transmitting the plurality of uplink positioning information to the AMF network element:
the terminal judges the current state of a communication session, wherein the current state of the communication session comprises an online state and a standby state;
when the current state of the communication session is in a standby state, the terminal transmits a wake-up request to the AMF network element, and wakes up the communication session to be in an online state;
and when the current state of the communication session is in an online state, executing the step of sending the uplink positioning information to the AMF network element or the step of sending a plurality of uplink positioning information to the AMF network element.
6. The satellite paging control method based on terminal position prediction according to claim 1, wherein the predicting the expected position of the terminal at the target time according to the terminal information is accomplished by a multi-layer neural network; the multi-layer neural network is arranged on an NWDAF network element, and the NWDAF network element acquires terminal information through an LMF network element;
different characteristic weights are respectively set for each piece of terminal information in the multi-layer neural network;
after the terminal information is input into the multi-layer neural network, the multi-layer neural network obtains the expected position of the terminal at the target moment by carrying out weighted calculation on each piece of terminal information, and outputs the expected position of the terminal at the target moment as a prediction result.
7. The method for controlling satellite paging based on terminal position prediction according to claim 1, wherein the step of determining whether the terminal is within the coverage area of the satellite at the target time according to the expected position of the terminal comprises the following steps:
the AMF network element establishes a communication session with a satellite and sends a satellite information acquisition request to the satellite;
the AMF network element acquires satellite information reported by a satellite; the satellite information includes satellite coverage;
the NWDAF network element sends an information subscription request to the AMF network element; the information subscription request is used for subscribing satellite information to the AMF network element;
the AMF network element sends satellite information to the NWDAF network element;
the NWDAF network element judges whether the terminal is in the coverage area of the satellite at the target moment according to the expected position of the terminal and the coverage area of the satellite; and sending the judgment result to the AMF network element.
8. The method for satellite paging control based on terminal location prediction according to claim 7, wherein the satellite coverage includes a static range or a dynamic range;
when the satellite coverage is a static range, the NWDAF network element forms a fixed longitude and latitude coordinate interval according to the longitude and latitude coordinates of the edge of the satellite coverage; the judgment of whether the terminal is in the coverage area of the satellite at the target time is completed by comparing whether the longitude and latitude coordinates of the expected position of the terminal are in the longitude and latitude coordinate interval;
when the satellite coverage is a dynamic range, the NWDAF network element generates a satellite coverage longitude and latitude coordinate change interval related to a time period to obtain a satellite coverage longitude and latitude interval under a target time; and comparing whether the longitude and latitude coordinates of the expected position of the terminal are positioned in the longitude and latitude coordinate interval under the target time, and finishing the judgment of whether the terminal is positioned in the coverage area of the satellite under the target time.
9. An electronic device, applied to a core network, is characterized by comprising a processor and a memory;
the memory is used for storing programs;
the processor executing the program to implement the method of any one of claims 1-8.
10. A computer readable storage medium, characterized in that the storage medium stores a program, which is executed by a processor to implement the method of any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211589547.0A CN116015404B (en) | 2022-12-12 | 2022-12-12 | Satellite paging control method, device and medium based on terminal position prediction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211589547.0A CN116015404B (en) | 2022-12-12 | 2022-12-12 | Satellite paging control method, device and medium based on terminal position prediction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116015404A true CN116015404A (en) | 2023-04-25 |
| CN116015404B CN116015404B (en) | 2023-10-24 |
Family
ID=86032564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211589547.0A Active CN116015404B (en) | 2022-12-12 | 2022-12-12 | Satellite paging control method, device and medium based on terminal position prediction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116015404B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190043084A (en) * | 2017-10-17 | 2019-04-25 | 한국전자통신연구원 | Method and apparatus for location based service in 5g system |
| CN111148091A (en) * | 2018-11-02 | 2020-05-12 | 电信科学技术研究院有限公司 | Method and equipment for paging and method and equipment for updating corresponding relation |
| CN113098589A (en) * | 2021-04-08 | 2021-07-09 | 广州爱浦路网络技术有限公司 | Paging method for satellite terminal, core network, computer apparatus and storage medium |
| WO2022037453A1 (en) * | 2020-08-19 | 2022-02-24 | 大唐移动通信设备有限公司 | Method and apparatus for obtaining geographical location information of terminal |
| CN115297439A (en) * | 2022-08-02 | 2022-11-04 | 广州爱浦路网络技术有限公司 | Satellite communication method, device, network data analysis function network element and storage medium |
| CN115299127A (en) * | 2020-03-19 | 2022-11-04 | 三星电子株式会社 | Apparatus and method for providing low-latency location information service in wireless communication system |
-
2022
- 2022-12-12 CN CN202211589547.0A patent/CN116015404B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190043084A (en) * | 2017-10-17 | 2019-04-25 | 한국전자통신연구원 | Method and apparatus for location based service in 5g system |
| CN111148091A (en) * | 2018-11-02 | 2020-05-12 | 电信科学技术研究院有限公司 | Method and equipment for paging and method and equipment for updating corresponding relation |
| CN115299127A (en) * | 2020-03-19 | 2022-11-04 | 三星电子株式会社 | Apparatus and method for providing low-latency location information service in wireless communication system |
| WO2022037453A1 (en) * | 2020-08-19 | 2022-02-24 | 大唐移动通信设备有限公司 | Method and apparatus for obtaining geographical location information of terminal |
| CN113098589A (en) * | 2021-04-08 | 2021-07-09 | 广州爱浦路网络技术有限公司 | Paging method for satellite terminal, core network, computer apparatus and storage medium |
| CN115297439A (en) * | 2022-08-02 | 2022-11-04 | 广州爱浦路网络技术有限公司 | Satellite communication method, device, network data analysis function network element and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116015404B (en) | 2023-10-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6330446B1 (en) | Velocity-based method of controlling registration in mobile communication systems | |
| AU750064C (en) | System and method for implementing positioning quality of service | |
| US20040176040A1 (en) | Performance statistics collection for wireless service providers | |
| CN107852609A (en) | System and method for connectivity management | |
| CN113411810B (en) | Space-based Internet of things communication system | |
| US20180132096A1 (en) | Differential tracking and mobility management in communication networks | |
| CN115297439B (en) | Satellite communication method, device, network data analysis function network element and storage medium | |
| CN103238348A (en) | Method and apparatus for controlling measurement information report in 3GPP system | |
| US20220095133A1 (en) | Network system level division method and apparatus | |
| CA2307858C (en) | Channel resource utilization during a positioning handover | |
| CN105393622B (en) | The dispatching method and equipment of user equipment | |
| Tassetto et al. | A novel hybrid algorithm for passive localization of victims in emergency situations | |
| CN1332215C (en) | Moving localization method | |
| Grillo et al. | Teletraffic engineering for mobile personal communications in ITU-T work: The need to match practice and theory | |
| CN112437393B (en) | Method, equipment and device for configuring reachability area | |
| EP3200527B1 (en) | Method and device for allocating radio resource | |
| CN103313300A (en) | Method and equipment for obtaining location information during MDT process | |
| CN116015404B (en) | Satellite paging control method, device and medium based on terminal position prediction | |
| KR100270753B1 (en) | Autonomous remote measurement unit for wireless telecommunication | |
| CN116209046B (en) | Real-time energy-saving mobile communication method, device, network side equipment and medium | |
| CN104284416A (en) | Measurement information storing method, device and terminal | |
| US9198057B2 (en) | Wireless communication device, base station, wireless communication method, and wireless communication system | |
| CN103442346A (en) | Emergency communication network real-time evaluation system based on dynamic simulation method | |
| US20240057139A1 (en) | Optimization of deterministic and non-deterministic traffic in radio-access network (ran) | |
| GB2609623A (en) | Communication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |