CN117528710B - Terminal NTN cell selection method, device, equipment and medium based on management platform - Google Patents

Terminal NTN cell selection method, device, equipment and medium based on management platform Download PDF

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Publication number
CN117528710B
CN117528710B CN202410018618.4A CN202410018618A CN117528710B CN 117528710 B CN117528710 B CN 117528710B CN 202410018618 A CN202410018618 A CN 202410018618A CN 117528710 B CN117528710 B CN 117528710B
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ntn
information
cell
target
ntn cell
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CN117528710A (en
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邓勇志
范善翔
杨子炫
陈瑞欣
李海方
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Guangdong Shiju Network Technology Co ltd
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Guangdong Shiju Network Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18519—Operations control, administration or maintenance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks
    • 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

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application discloses a terminal NTN cell selection method, device, equipment and medium based on a management platform, and belongs to the technical field of wireless communication networks. The method comprises the following steps: constructing an information text according to a position message sent by the terminal equipment and the system time for receiving the reported information; determining at least one candidate NTN cell corresponding to the position information, and estimated power information and retention time of each candidate NTN cell according to the mapping relation between the information text and the pre-constructed information text and the NTN cell; and determining a target NTN cell according to the estimated power information and the retention time. According to the technical scheme, the mapping relation between the information text and the NTN cells is constructed in advance, so that the candidate NTN cells of the terminal equipment at each time can be determined in advance, the comprehensive management of all positions and the NTN cells is realized, the defect that the candidate NTN cells are determined according to the information of each NTN cell and the information of the terminal equipment during connection, and the time is wasted is avoided, and the equipment is ensured to be capable of communicating in real time.

Description

Terminal NTN cell selection method, device, equipment and medium based on management platform
Technical Field
The application belongs to the technical field of wireless communication networks, and particularly relates to a terminal NTN cell selection method, device, equipment and medium based on a management platform.
Background
The intelligent terminal equipment needs to be kept within the coverage range of the ground base station to communicate. However, the conventional ground network cannot provide stable communication service in some areas due to complicated geographical environment, underdeveloped infrastructure, disaster damage and the like. The NTN (Non-TERRESTRIAL NETWORK, non-ground network) uses satellite, airship or unmanned plane and other Non-ground platforms to overcome these limitations and realize communication coverage in the global scope.
The prior art can support the intelligent terminal equipment to select the satellite for communication connection according to the signal power intensity of the satellite. However, there may be a case that the NTN cell corresponding to the connection satellite only can briefly cover the location of the intelligent terminal device, which will cause that the intelligent terminal device needs to switch the connection satellite again in a short time, thereby delaying the communication service of the intelligent terminal device. Therefore, how to determine in advance, according to the signal power strength and the signal retention time length of the NTN cell, the NTN cell to which the terminal device is to be connected is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The embodiment of the application aims to provide a terminal NTN cell selection method, device, equipment and medium based on a management platform, and aims to determine candidate NTN cells of terminal equipment at all times in advance, realize the overall management of all positions and the NTN cells and ensure that the equipment can communicate in real time.
In a first aspect, an embodiment of the present application provides a management platform-based terminal NTN cell selection method, where the method includes:
If a connection triggering event of the terminal equipment is monitored, a position information reporting instruction is sent to the terminal equipment;
Acquiring a position message of a terminal device;
Constructing an information text by the position message and the system time for receiving the reported information;
Determining at least one candidate NTN cell corresponding to the position information, and estimated power information and retention time of each candidate NTN cell according to the mapping relation between the information text and the pre-constructed information text and the NTN cell;
and determining a target NTN cell according to the estimated power information and the retention time, and sending cell information of the target NTN cell to the terminal equipment so that the terminal equipment can establish NTN connection with a satellite corresponding to the target NTN cell.
In a second aspect, an embodiment of the present application provides a terminal NTN cell selection apparatus based on a management platform, where the apparatus includes:
The reporting instruction sending module is used for sending a position information reporting instruction to the terminal equipment if a connection triggering event of the terminal equipment is monitored;
the position message acquisition module is used for acquiring the position message of the terminal equipment;
the information text construction module is used for constructing an information text by the position message and the system time for receiving the reported information;
The candidate cell determining module is used for determining at least one candidate NTN cell corresponding to the position information, and estimated power information and retention time of each candidate NTN cell according to the mapping relation between the information text and the pre-constructed information text and the NTN cell;
and the target cell determining module is used for determining a target NTN cell according to the estimated power information and the retention time, and sending the cell information of the target NTN cell to the terminal equipment so that the terminal equipment can establish NTN connection with a satellite corresponding to the target NTN cell.
In a third aspect, an embodiment of the present application provides an electronic device, including a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction implementing the steps of the method according to the first aspect when executed by the processor.
In a fourth aspect, embodiments of the present application provide a readable storage medium having stored thereon a program or instructions which when executed by a processor perform the steps of the method according to the first aspect.
In a fifth aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and where the processor is configured to execute a program or instructions to implement a method according to the first aspect.
In the embodiment of the application, if the connection trigger event of the terminal equipment is monitored, a position information reporting instruction is sent to the terminal equipment; acquiring a position message of a terminal device; constructing an information text by the position message and the system time for receiving the reported information; determining at least one candidate NTN cell corresponding to the position information, and estimated power information and retention time of each candidate NTN cell according to the mapping relation between the information text and the pre-constructed information text and the NTN cell; and determining a target NTN cell according to the estimated power information and the retention time, and sending cell information of the target NTN cell to the terminal equipment so that the terminal equipment can establish NTN connection with a satellite corresponding to the target NTN cell. According to the terminal NTN cell selection method based on the management platform, the candidate NTN cells of the terminal equipment at each time can be determined in advance by constructing the mapping relation between the information text and the NTN cells in advance, so that the overall management of all positions and the NTN cells is realized, the defect that the candidate NTN cells are determined according to the information of each NTN cell and the information of the terminal equipment in connection, and the time is wasted is avoided, and the equipment is ensured to communicate in real time.
Drawings
Fig. 1 is a flow chart of a management platform-based terminal NTN cell selection method according to an embodiment of the present application;
Fig. 2 is a flow chart illustrating a process of constructing a mapping relationship between an information text and an NTN cell according to a second embodiment of the present application;
Fig. 3 is a flow chart of a management platform-based terminal NTN cell selection method according to a third embodiment of the present application;
Fig. 4 is a schematic structural diagram of a terminal NTN cell selection apparatus based on a management platform according to a fourth embodiment of the present application;
fig. 5 is a schematic structural diagram of an electronic device according to a fifth embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the following detailed description of specific embodiments of the present application is given with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the matters related to the present application are shown in the accompanying drawings. Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart depicts operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently, or at the same time. Furthermore, the order of the operations may be rearranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figures. The processes may correspond to methods, functions, procedures, subroutines, and the like.
The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are obtained by a person skilled in the art based on the embodiments of the present application, fall within the scope of protection of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The method, the device, the equipment and the medium for selecting the terminal NTN cell based on the management platform provided by the embodiment of the application are described in detail through specific embodiments and application scenes thereof with reference to the accompanying drawings.
Example 1
Fig. 1 is a flowchart of a management platform-based terminal NTN cell selection method according to an embodiment of the present application. As shown in fig. 1, the method specifically comprises the following steps:
s101, if a connection trigger event of a terminal device is monitored, a position information reporting instruction is sent to the terminal device;
Firstly, the application is suitable for the scene that the terminal equipment is connected with the NTN cell to meet the communication requirement. Based on the above usage scenario, it can be appreciated that the execution subject of the present application may be an NTN management platform. Specifically, the construction of the information text, the determination of the target NTN cell, the transmission of the cell information of the target NTN cell, and the like may be performed by the NTN management platform, and the terminal device may communicate with other terminal devices after establishing the NTN connection with the satellite corresponding to the target NTN cell.
NTN (Non-TERRESTRIAL NETWORK ) refers to a network that provides wireless communication services using Non-traditional means (e.g., satellites, airships, drones, etc.). Compared with the traditional ground network, the NTN has the advantages of wide area coverage, quick deployment, elastic expansion and the like, and can provide communication service in remote areas, disaster areas or temporary activities. An NTN cell refers to a communication unit established in NTN.
The NTN management platform may be a centralized control platform based on a satellite server for helping the smart device to establish NTN connections with satellites. The satellite server is a server device deployed on a satellite and is used for processing and providing satellite communication and data services and recording and predicting the moving track information of the satellite in real time.
The terminal device may refer to an electronic device having computing power and internet connection capability, such as a desktop computer, a notebook computer, a mobile phone, a tablet computer, an interactive multimedia device, and the like.
The connection trigger event may be that the terminal device sends an NTN connection request to the NTN management platform, and the NTN management platform receives the NTN connection request, which is the connection trigger event for monitoring the terminal device. The NTN connection request may be a message or a command for acquiring cell information of the target NTN cell to establish NTN connection with a satellite corresponding to the target NTN cell.
The location information reporting instruction may be a command or a message for requesting the terminal device to issue location information of the terminal device to the NTN management platform. The mode of sending the position information reporting instruction can adopt a satellite link currently connected with a satellite through the terminal equipment to send the position information reporting instruction. The satellite link refers to a communication connection established between the device and the satellite through wireless signals.
S102, acquiring a position message of a terminal device;
the location message of the terminal device may refer to a data packet or message containing an identification of the terminal device and current location information of the terminal device.
The current location information of the terminal device may include longitude and latitude coordinates of the terminal device, altitude, and the like. The terminal device may determine the current location information of the terminal device through GPS (Global Positioning System ).
And the terminal equipment sends the position message to the NTN management platform through a satellite link, and the NTN management platform receives the position message.
S103, constructing an information text by the position message and the system time of receiving the reported information;
The system time may refer to the time when the NTN management platform receives the report information under the time standard used by the NTN management platform, where the time standard of the NTN management platform is synchronized with the universal time.
The information text may be a set containing the current location information of the terminal device and the system time converted into text form. The method for constructing the information text can adopt the mode of constructing an information text construction function, wherein the information text construction function receives position messages and system time as input parameters of the information text construction function, converts the data format of the function parameters into a text format, performs text splicing, and finally obtains the text as output data of the information text construction function.
The following is an example code for an information text construction function:
def build_information_text(position_message, system_time):
# converting position message and system time into character string format
position_str = str(position_message)
time_str = str(system_time)
# Text stitching
Information_text= "position message: "+position_str+" \n "+" system time: "+time_str
Return message text
return information_text
S104, determining at least one candidate NTN cell corresponding to the position information, and estimated power information and retention time of each candidate NTN cell according to the mapping relation between the information text and the pre-constructed information text and the NTN cell;
The mapping relationship between the information text and the NTN cells describes the correspondence between each information text and each NTN cell, and one information text corresponds to at least one NTN cell.
The estimated power information of the NTN cell may be the average satellite signal received power in watts (W) or decibel milliwatts (dBm) calculated for the estimated center position of the target area; the duration of the NTN cell may be a duration that the NTN cell can support the communication requirements of the terminal device.
The information text and the NTN cell can be associated and stored in a mapping relation table so as to record the mapping relation between the information text and the NTN cell. The mapping relation table can be a relation database table established by taking the information such as the recording serial number, the information text, the NTN cell, the estimated power information of the NTN cell, the retention time of the NTN cell and the like as fields and taking the recording serial number as a main key; the relational database can be a database which adopts a relational model to organize data, and the data is stored in the form of rows and columns so as to be convenient for users to understand; a field may be a header of each column in the data table; the primary key may be a field or combination of fields that can uniquely represent each record in the data table.
The process for constructing the mapping relation between the information text and the NTN cell comprises the following steps: dividing a target area from a preset range; taking the central position of the target area as a target position, and combining the time change of the system to establish a dynamic mapping relation between the target position and the time change of the NTN cell; acquiring the moving track information of a satellite with a signal range covering a target area; calculating power change data of the central position of the target area in the satellite moving process according to the moving track information; and constructing a power change model according to the corresponding relation between the power change data and the system time, and outputting the estimated power information and the retention time of the NTN cell based on the power change model.
And inquiring the mapping relation table by taking the information text as a keyword, wherein the obtained inquiring result comprises the NTN cells corresponding to the information text, and the estimated power information and the retention time of the NTN cells, and the obtained NTN cells are candidate NTN cells.
S105, determining a target NTN cell according to the estimated power information and the retention time, and sending cell information of the target NTN cell to the terminal equipment so that the terminal equipment can establish NTN connection with a satellite corresponding to the target NTN cell.
The target NTN cell may refer to an NTN cell corresponding to a satellite to which the terminal device is finally determined to select a connection. The method for determining the target NTN cell according to the estimated power information and the reserved time length can adopt a method for determining power demand data or estimated connection time length demand data of the terminal equipment according to NTN connection demands, and determining the target NTN cell according to the power demand data or the estimated connection time length demand data, the estimated power information and the reserved time length.
The cell information of the NTN cell may include an identity of the NTN cell, related configuration information, and the like.
The method of establishing the NTN connection with the satellite corresponding to the target NTN cell may adopt a manner that the terminal device sends a connection request to the satellite corresponding to the target NTN cell, and the satellite corresponding to the target NTN cell receives the connection request and passes verification, so as to establish the NTN connection. The connection request may include cell information of the NTN cell, an identifier of the terminal device, authentication information of the terminal device, and the like.
In the embodiment of the application, if the connection trigger event of the terminal equipment is monitored, a position information reporting instruction is sent to the terminal equipment; acquiring a position message of a terminal device; constructing an information text by the position message and the system time for receiving the reported information; determining at least one candidate NTN cell corresponding to the position information, and estimated power information and retention time of each candidate NTN cell according to the mapping relation between the information text and the pre-constructed information text and the NTN cell; and determining a target NTN cell according to the estimated power information and the retention time, and sending cell information of the target NTN cell to the terminal equipment so that the terminal equipment can establish NTN connection with a satellite corresponding to the target NTN cell. According to the terminal NTN cell selection method based on the management platform, the candidate NTN cells of the terminal equipment at each time can be determined in advance by constructing the mapping relation between the information text and the NTN cells in advance, so that the overall management of all positions and the NTN cells is realized, the defect that the candidate NTN cells are determined according to the information of each NTN cell and the information of the terminal equipment in connection, and the time is wasted is avoided, and the equipment is ensured to communicate in real time.
Example two
Fig. 2 is a flow chart illustrating a process of constructing a mapping relationship between an information text and an NTN cell according to a second embodiment of the present application. The scheme makes better improvement on the embodiment, and the specific improvement is as follows: the construction process of the mapping relation comprises the following steps: dividing a target area from a preset range; and taking the central position of the target area as a target position, and combining the system time change to establish a dynamic mapping relation between the target position and the NTN cell which changes along with the time.
As shown in fig. 2, the method specifically comprises the following steps:
s201, dividing a target area from a preset range;
The preset range may be a region range with a high overall population density, which may be covered by a plurality of NTN cells, for example, a country, region or continent.
The target area may be an area in which the preset range is divided, and each position in the area performs NTN communication with a satellite corresponding to the same NTN cell. The boundary longitude and latitude coordinates of each target area can be obtained by dividing according to the terrain distribution condition and population distribution condition in a preset range so as to confirm each target area.
S202, taking the central position of the target area as a target position, and combining the system time change to establish a dynamic mapping relation between the target position and the NTN cell changing along with time.
The center position may refer to a geometric center or a center of gravity position of the target area, and the target position may be a reference position of each terminal device selecting the NTN cell in the whole target area.
By finding the minimum latitude, the maximum latitude, the minimum longitude and the maximum longitude of the target area, a minimum rectangular bounding box containing the target area can be confirmed, wherein the geometric center of the minimum rectangular bounding box is the center position of the target area, and further is the target position. Alternatively, the location with the highest population density may be identified as the center location of the target area, i.e. the target location, according to the population distribution situation in the target area.
Because the system time change is never stopped, the movement of the NTN cell relative to the target position is never stopped, namely, the NTN cells covering the target area at each time point of the system time are different, the mapping relationship between the target area and the NTN cell is also changed in real time along with the system time change, namely, the mapping relationship between the target area and the NTN cell is a dynamic mapping relationship which changes along with the time.
By establishing a target area-NTN cell table, the mapping relation between the target position and the NTN cell can be stored. The target area-NTN cell table may be a relational database table established by taking a target area and an NTN cell corresponding to the current system time target area as fields and taking the target area as a primary key.
By changing the NTN cell corresponding to the target position in the target area-NTN cell table in real time along with the time change of the system, the dynamic mapping relation between the target position and the NTN cell along with the time change can be stored. Specifically, as the system time changes, the NTN cell corresponding to the target position may be changed in real time, by determining, according to the moving speed and the target position of each NTN cell, the NTN cell in which the target position is covered at each time point of the system time, and changing, in real time, the target area-NTN cell table according to the system time and the determined covered NTN cell. The moving speed of the NTN cell may be equal to the moving speed of the satellite minus the calculation result of the earth rotation speed.
The method has the advantages that the time when the target area is covered by the NTN cell can be determined, the coverage duration and the time when the coverage is ended can be helped by determining the target area and the target position of the target area and establishing the dynamic mapping relation between the target position and the NTN cell along with the change of time.
In this technical solution, optionally, the process of constructing the mapping relationship further includes:
Acquiring the moving track information of a satellite with a signal range covering the target area;
calculating power change data of the central position of the target area in the satellite moving process according to the moving track information;
and constructing a power change model according to the corresponding relation between the power change data and the system time, and outputting estimated power information and retention time of the NTN cell based on the power change model.
The signal range may refer to an area range on the earth, i.e., the coverage of the NTN cell, that is capable of efficiently receiving satellite signals. If the latitude of the target area is included in the latitude area of the signal range, the signal range may cover the target area.
The motion trajectory information may refer to the motion path of the satellite in space and ground altitude information, and is typically recorded and stored on a satellite server. By inquiring the satellite server, the running track information of the satellite can be obtained.
The power variation data may refer to the received power strength of the satellite signal in watts (W) or decibel milliwatts (dBm) at a central location of the target area (i.e., the target location). The power change data can be calculated by determining satellite positions at various time points of the system time according to the moving track information, calculating the distance between the satellite and the central position of the target area according to the satellite positions, the satellite ground altitude information and the central position of the target area, and calculating the received power intensity of the satellite signal at the central position of the target area according to the calculated distance and the emitted power intensity of the satellite signal, wherein the obtained received power intensity is the power change data.
According to the corresponding relation between the power change data and the system time, a mode of constructing a power change model can be adopted, wherein the system time is taken as a horizontal axis, the power change data is taken as a vertical axis, a rectangular coordinate system is established, punctuation is carried out in the rectangular coordinate system according to the power change data at each time point of the system time, and the rectangular coordinate system after punctuation is the power change model.
The estimated power information of the NTN cell may refer to an average value of power change data of the target location within a time range in which the NTN cell covers the target location. The estimated power information of the NTN cell may be obtained by summing all the power change data and dividing by the total duration for which the power change data is not 0.
The retention time of the NTN cell may refer to a time that the satellite signal corresponding to the NTN cell can meet the communication requirement of the target area, a power change data threshold is set according to the communication requirement of the target area, and a time that the power change data exceeds the power change data threshold is counted, where the obtained counted result is the retention time of the NTN cell.
The method has the advantages that the estimated power information and the retention time of the NTN cells are determined, reference data can be provided for determining the target NTN cells in the candidate NTN cells, and the accuracy of the determination result of the target NTN cells is improved.
In this technical solution, optionally, after the power change model is constructed, the method further includes:
and determining an NTN cell sequence after the target area is accessed to the NTN cell from any system time according to the power change model.
And taking the ending time of the retention time of the previous NTN cell as the access time of the next NTN cell, determining the NTN cell which can cover the target area at the access time, determining the next NTN cell according to the estimated power information and the retention time of the NTN cell output by the power change model, outputting, taking the latest determined NTN cell as the previous NTN cell, and repeating the process. The NTN cells that are continuously output in this process constitute the NTN cell sequence.
The method has the advantages that the NTN cell sequence of the target area accessed to the NTN cell from any system time is determined, the NTN cell accessed to the target area can be determined in advance, an information text is not needed to be constructed according to the system time, the target NTN cell is determined according to the information text, time is saved, and efficiency is improved.
Example III
Fig. 3 is a flow chart of a management platform-based terminal NTN cell selection method according to a third embodiment of the present application. The scheme makes better improvement on the first embodiment, and the specific improvement is as follows: before determining the target NTN cell according to the estimated power information and the retention time, the method further includes: acquiring map data corresponding to the position information of the terminal equipment; determining the NTN connection requirement of the terminal equipment according to the map data; correspondingly, determining the target NTN cell according to the estimated power information and the retention time length comprises the following steps: and determining a target NTN cell according to the estimated power information, the retention time and the NTN connection requirement.
As shown in fig. 3, the method specifically comprises the following steps:
s301, if a connection trigger event of a terminal device is monitored, a position information reporting instruction is sent to the terminal device;
S302, acquiring a position message of a terminal device;
S303, constructing an information text by the position message and the system time of receiving the reported information;
s304, determining at least one candidate NTN cell corresponding to the position information, and estimated power information and retention time of each candidate NTN cell according to the mapping relation between the information text and the pre-constructed information text and the NTN cell;
S305, acquiring map data corresponding to the position information of the terminal equipment;
The location information of the terminal device may refer to latitude and longitude coordinates of the terminal location on earth. By using GPS (Global Positioning System ) the location information of the terminal device can be determined.
The map data may be an area type determined according to population density, road network, area usage, and the like corresponding to the location information of the terminal device. Different zone types have different corresponding NTN connection requirements based on different population densities, road networks, zone uses, etc.
By using the map service provider's API (Application Programming Interface ), the location information of the terminal device is used as input to initiate a request to the map service, the API returning the corresponding map data. The following is an example function for calling the map service API and parsing the returned map data:
import requests
def get_map_data(location):
request using map service provider's API, incoming location information as parameter
Api_key= "YOUR _api_key" # is replaced with your map service API KEY
url = f"https://maps.example.com/apilocation={location}&api_key={api_key}"
response = requests.get(url)
if response.status_code == 200:
Map data returned by # resolution API
map_data = response.json()
# Extraction region type
area_type = map_data["area_type"]
Return map data and region type
return map_data, area_type
else:
Print ('map data request failure')
return None, None
S306, determining NTN connection requirements of the terminal equipment according to the map data;
The NTN connection requirement may be a communication purpose of determining the terminal device based on the map data, for example, if the area type of the terminal device is a residential area, the NTN connection requirement of the terminal device may be voice communication, video communication, or the like, and if the location information of the terminal device is an industrial area, the NTN connection requirement of the terminal device may be data communication, an Iot (INTERFERENCE OVER THERMAL, interference noise) connection, or the like.
The method for determining the NTN connection requirement of the terminal device may adopt a method for pre-associating and storing all map data with the NTN connection requirement, and acquiring the NTN connection requirement according to the determined map data and the association relationship between the map data and the NTN connection requirement.
S307, determining a target NTN cell according to the estimated power information, the retention time and the NTN connection requirement;
The method for determining the target NTN cell can determine the power demand data or the estimated connection time length demand data of the terminal equipment according to the NTN connection demand, and determine the target NTN cell according to the power demand data or the estimated connection time length demand data, the estimated power information and the retention time length.
And S308, transmitting the cell information of the target NTN cell to the terminal equipment so that the terminal equipment can establish NTN connection with a satellite corresponding to the target NTN cell.
The method and the device have the advantages that the NTN connection requirement of the terminal equipment is determined according to the map data corresponding to the position information of the terminal equipment, a data basis can be provided for determining the target NTN cell, and the problem that the target NTN cell cannot meet the NTN connection requirement of the terminal equipment is avoided.
In this technical solution, optionally, before determining the target NTN cell according to the estimated power information and the retention time, the method further includes:
acquiring a history connection request of history NTN connection corresponding to the position information of the terminal equipment;
determining the NTN connection requirement of the terminal equipment according to the historical connection request;
correspondingly, determining the target NTN cell according to the estimated power information and the retention time length comprises the following steps:
And determining a target NTN cell according to the estimated power information, the retention time and the NTN connection requirement.
The historical connection request may refer to all connection requests issued by the terminal device before the current point in time. After each time the terminal equipment sends out a connection request, the log recording function of the terminal equipment records and stores the connection request, and the history connection request of the history NTN connection corresponding to the position information of the terminal equipment can be obtained by reading the log record file of the terminal equipment.
The connection request may include an NTN connection requirement of the terminal device, and the NTN connection requirement of the terminal device may be determined by performing statistical analysis on the historical connection request of the terminal device.
The method has the advantages that the historical connection request of the terminal equipment is directly obtained, the NTN connection requirement is determined according to the historical connection request, and compared with the method for determining the NTN connection requirement according to map data, the method has the advantages that the required data calculation amount is less, and the method aims at the individual terminal equipment rather than the regional attribute of the position of the terminal equipment.
In this technical solution, optionally, determining the target NTN cell according to the estimated power information, the retention period, and the NTN connection requirement includes:
determining power demand data or estimated connection duration demand data of the terminal equipment according to the NTN connection demand;
and determining a target NTN cell according to the power demand data or the estimated connection time length demand data, the estimated power information and the retention time length.
The power demand data may specify a minimum value of estimated power information of the NTN cell and an importance of the estimated power information with respect to determining the target NTN cell, where the importance may be represented by using a weight; the predicted connection duration requirement data may specify the duration of the connection request and the importance of the remaining duration of the NTN cell relative to the determined target NTN cell, where the importance may be represented by using a weight.
The method for determining the target NTN cell can adopt a mode of comparing the lowest value of the estimated power information with the estimated power information of the candidate NTN cell, comparing the duration of the connection request with the retention time, and determining the candidate NTN cell with the estimated power information exceeding the lowest value of the estimated power information and the retention time exceeding the duration of the connection request as the final candidate NTN cell; and carrying out normalization processing on the estimated power information and the retention time of the candidate NTN cells, calculating the communication reliability score of each candidate NTN cell according to the estimated power information and the retention time after normalization processing and the corresponding weight, and selecting the candidate NTN cell with the highest communication reliability score as the target NTN cell.
The normalization process may be a process of mapping data to a uniform range or normalization to eliminate dimensional differences or data distribution differences between different data. Normalization may allow for comparability of different features or indicators, facilitating data analysis, model training, and algorithm application. Common normalization processing methods include min-max normalization, Z-Score normalization, decimal scale normalization, and normalization to unit length.
The Z-Score normalization does not have any manually set parameters or ranges, and compared with other normalization processes, the processed results are more objective and accurate, so that the Z-Score normalization can be adopted in the normalization process.
The general steps of Z-Score normalization include: calculating a mean value (mean) and a standard deviation (standard_displacement) of all samples, wherein the mean value represents the mean value of the data, and the standard deviation represents the discrete degree of the data; for each data point, the Z-Score value was calculated using the following formula:
Where x is the raw data point, mean is the mean and standard_displacement is the standard deviation.
The communication reliability score may be calculated according to a weighted calculation formula, specifically, the weighted calculation formula is:
The method and the device have the advantages that the target NTN cell is determined according to the power demand data or the estimated connection time length demand data, the estimated power information and the reserved time length, so that the target NTN cell can be attached to meet the NTN connection demand of the current terminal equipment.
Example IV
Fig. 4 is a schematic structural diagram of a terminal NTN cell selection apparatus based on a management platform according to a fourth embodiment of the present application. As shown in fig. 4, the apparatus includes:
A reporting instruction sending module 410, configured to send a location information reporting instruction to a terminal device if a connection trigger event of the terminal device is monitored;
a location message obtaining module 420, configured to obtain a location message of a terminal device;
The information text construction module 430 is configured to construct an information text from the location message and the system time of receiving the report information;
A candidate cell determining module 440, configured to determine at least one candidate NTN cell corresponding to the location information, and estimated power information and a retention time of each candidate NTN cell according to a mapping relationship between the information text and a pre-constructed information text and NTN cells;
The target cell determining module 450 is configured to determine a target NTN cell according to the estimated power information and the retention time, and send cell information of the target NTN cell to the terminal device, so that the terminal device establishes NTN connection with a satellite corresponding to the target NTN cell.
In the embodiment of the application, a reporting instruction sending module is used for sending a position information reporting instruction to terminal equipment if a connection triggering event of the terminal equipment is monitored; the position message acquisition module is used for acquiring the position message of the terminal equipment; the information text construction module is used for constructing an information text by the position message and the system time for receiving the reported information; the candidate cell determining module is used for determining at least one candidate NTN cell corresponding to the position information, and estimated power information and retention time of each candidate NTN cell according to the mapping relation between the information text and the pre-constructed information text and the NTN cell; and the target cell determining module is used for determining a target NTN cell according to the estimated power information and the retention time, and sending the cell information of the target NTN cell to the terminal equipment so that the terminal equipment can establish NTN connection with a satellite corresponding to the target NTN cell. According to the terminal NTN cell selection device based on the management platform, the candidate NTN cells of the terminal equipment at each time can be determined in advance by constructing the mapping relation between the information text and the NTN cells in advance, so that the overall management of all positions and the NTN cells is realized, the defect that the candidate NTN cells are determined according to the information of each NTN cell and the information of the terminal equipment in connection, and the time is wasted is avoided, and the equipment is ensured to communicate in real time.
The terminal NTN cell selection device based on the management platform in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device may be a mobile electronic device or a non-mobile electronic device. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), etc., and the non-mobile electronic device may be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a Television (TV), a teller machine, a self-service machine, etc., and the embodiments of the present application are not limited in particular.
The terminal NTN cell selection device based on the management platform in the embodiment of the present application may be a device with an operating system. The operating system may be an Android operating system, an IOS operating system, or other possible operating systems, and the embodiment of the present application is not limited specifically.
The terminal NTN cell selection device based on the management platform provided by the embodiment of the present application can implement each process implemented in the first to third embodiments, and in order to avoid repetition, a detailed description is omitted here.
Example five
As shown in fig. 5, an embodiment of the present application further provides an electronic device 500, including a processor 501, a memory 502, and a program or an instruction stored in the memory 502 and capable of running on the processor 501, where the program or the instruction implements each process of the embodiment of the terminal NTN cell selection device based on the management platform when executed by the processor 501, and the process can achieve the same technical effect, so that repetition is avoided and redundant description is omitted herein.
The electronic device in the embodiment of the application includes the mobile electronic device and the non-mobile electronic device.
Example six
The embodiment of the application also provides a readable storage medium, on which a program or an instruction is stored, which when executed by a processor, implements each process of the embodiment of the terminal NTN cell selection device based on the management platform, and can achieve the same technical effect, so that repetition is avoided, and no further description is given here.
Wherein the processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.
Example seven
The embodiment of the application further provides a chip, the chip comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running programs or instructions, the processes of the embodiment of the terminal NTN cell selection device based on the management platform can be realized, the same technical effects can be achieved, and the repetition is avoided, so that the description is omitted.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, etc.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.
The foregoing description is only of the preferred embodiments of the application and the technical principles employed. The present application is not limited to the specific embodiments described herein, but is capable of numerous modifications, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the application. Therefore, while the application has been described in connection with the above embodiments, the application is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit of the application, the scope of which is set forth in the following claims.

Claims (9)

1. A terminal NTN cell selection method based on a management platform, the method comprising:
If a connection triggering event of the terminal equipment is monitored, a position information reporting instruction is sent to the terminal equipment;
Acquiring a position message of a terminal device;
Constructing an information text by the position message and the system time for receiving the reported information;
Determining at least one candidate NTN cell corresponding to the position information and estimated power information and retention time of each candidate NTN cell according to the mapping relation between the information text and the pre-constructed information text and the NTN cell, wherein the construction process of the mapping relation comprises the following steps: dividing a target area in a preset range, taking the central position of the target area as a target position, and establishing a dynamic mapping relation between the target position and the NTN cell along with time change by combining with system time change;
and determining a target NTN cell according to the estimated power information and the retention time, and sending cell information of the target NTN cell to the terminal equipment so that the terminal equipment can establish NTN connection with a satellite corresponding to the target NTN cell.
2. The terminal NTN cell selection method based on the management platform according to claim 1, wherein the construction process of the mapping relationship further includes:
Acquiring the moving track information of a satellite with a signal range covering the target area;
calculating power change data of the central position of the target area in the satellite moving process according to the moving track information;
and constructing a power change model according to the corresponding relation between the power change data and the system time, and outputting estimated power information and retention time of the NTN cell based on the power change model.
3. The management platform based terminal NTN cell selection method according to claim 1, characterized in that after constructing the power variation model, the method further comprises:
and determining an NTN cell sequence after the target area is accessed to the NTN cell from any system time according to the power change model.
4. The management platform-based terminal NTN cell selection method according to claim 1, characterized in that before determining a target NTN cell from the pre-estimated power information and the retention time, the method further comprises:
acquiring map data corresponding to the position information of the terminal equipment;
determining the NTN connection requirement of the terminal equipment according to the map data;
correspondingly, determining the target NTN cell according to the estimated power information and the retention time length comprises the following steps:
And determining a target NTN cell according to the estimated power information, the retention time and the NTN connection requirement.
5. The management platform-based terminal NTN cell selection method according to claim 1, characterized in that before determining a target NTN cell from the pre-estimated power information and the retention time, the method further comprises:
acquiring a history connection request of history NTN connection corresponding to the position information of the terminal equipment;
determining the NTN connection requirement of the terminal equipment according to the historical connection request;
correspondingly, determining the target NTN cell according to the estimated power information and the retention time length comprises the following steps:
And determining a target NTN cell according to the estimated power information, the retention time and the NTN connection requirement.
6. The method for selecting a terminal NTN cell based on a management platform according to claim 4 or 5, wherein determining a target NTN cell according to the estimated power information, the retention period, and the NTN connection requirement comprises:
determining power demand data or estimated connection duration demand data of the terminal equipment according to the NTN connection demand;
and determining a target NTN cell according to the power demand data or the estimated connection time length demand data, the estimated power information and the retention time length.
7. A terminal NTN cell selection apparatus based on a management platform, the apparatus comprising:
The reporting instruction sending module is used for sending a position information reporting instruction to the terminal equipment if a connection triggering event of the terminal equipment is monitored;
the position message acquisition module is used for acquiring the position message of the terminal equipment;
the information text construction module is used for constructing an information text by the position message and the system time for receiving the reported information;
The candidate cell determining module is configured to determine at least one candidate NTN cell corresponding to the location information, and estimated power information and a retention time length of each candidate NTN cell according to a mapping relationship between the information text and a pre-constructed information text and the NTN cell, where a construction process of the mapping relationship includes: dividing a target area in a preset range, taking the central position of the target area as a target position, and establishing a dynamic mapping relation between the target position and the NTN cell along with time change by combining with system time change;
and the target cell determining module is used for determining a target NTN cell according to the estimated power information and the retention time, and sending the cell information of the target NTN cell to the terminal equipment so that the terminal equipment can establish NTN connection with a satellite corresponding to the target NTN cell.
8. An electronic device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the management platform based terminal NTN cell selection method of any of claims 1-6.
9. A readable storage medium, characterized in that it has stored thereon a program or instructions, which when executed by a processor, implement the steps of the management platform based terminal NTN cell selection method according to any of claims 1-6.
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