Non-ground network searching method and device based on auxiliary information, equipment and medium

Abstract

The invention relates to a non-ground network searching method and device based on auxiliary information, equipment and a medium. The method comprises: determining auxiliary information for a terminal to perform non-ground network search, the auxiliary information comprising: a first type of auxiliary information: calculating according to a current pointing angle of the terminal to a base station and gain information of a terminal antenna, the terminal satisfying a minimum communication requirement; according to the second type of auxiliary information, a GPS signal of the terminal is searched, and the GPS signal is effective; according to the third type of auxiliary information, based on the current POI information, an access environment of a non-ground network exists; judging whether the terminal meets the requirements of the first type of auxiliary information, the second type of auxiliary information and the third type of auxiliary information or not in the current environment in sequence; if so, accessing the terminal to a non-ground network; and if one item is not satisfied, the terminal is not accessed to the non-ground network. According to the invention, the non-ground network access capability of the terminal in a complex scene can be improved, and the service recovery time of the terminal is shortened.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technology, and in particular to a non-terrestrial network search method, device, equipment and medium based on auxiliary information. Background Art

[0002] In the field of mobile communications, the network search strategy of terminal devices is mainly based on established logic to search for networks without fully considering the current status of the terminal devices. Taking the fusion search of terrestrial networks and non-terrestrial networks as an example, the terminal will first search the terrestrial network when there is no service, and will start searching the non-terrestrial network only after a certain number of rounds of terrestrial network searches.

[0003] However, due to the antenna design of mobile terminals, the antenna of non-terrestrial networks is usually located on the top of the terminal. When the top antenna of the mobile terminal fails to point to the sky, the gain of the antenna will be significantly reduced, which will cause the non-terrestrial network signal strength received by the terminal to be extremely weak, or even unable to meet the access conditions.

[0004] Therefore, although the terminal performs a search for a non-terrestrial network, this process is actually ineffective and takes up time resources, and also causes a delay in the terminal recovery time. Summary of the invention

[0005] Based on this, it is necessary to provide a non-terrestrial network search method, device, equipment and medium based on auxiliary information, which can improve the access success rate of non-terrestrial networks and shorten the time for terminals to resume services, in response to the above technical problems.

[0006] A non-terrestrial network search method based on auxiliary information, the method comprising: determining auxiliary information for a terminal to perform a non-terrestrial network search, the auxiliary information comprising: The first type of auxiliary information: calculated based on the current pointing angle of the terminal to the base station and the gain information of the terminal antenna, the terminal meets the minimum communication requirements; The second type of auxiliary information: searching for the GPS signal of the terminal, and the GPS signal is valid; The third type of auxiliary information: based on the current POI information, there is an access environment for non-ground networks; Determine in sequence whether the terminal meets the requirements of the first type of auxiliary information, the second type of auxiliary information and the third type of auxiliary information in the current environment; if all are met, the terminal is connected to the non-terrestrial network; if one item is not met, the terminal is not connected to the non-terrestrial network.

[0007] A non-terrestrial network search device based on auxiliary information, the device comprising: An auxiliary information construction module is used to determine auxiliary information for the terminal to search for non-terrestrial networks, the auxiliary information including: first type of auxiliary information: the terminal meets the minimum communication requirements according to the current pointing angle of the terminal to the base station and the gain information of the terminal antenna; second type of auxiliary information: the GPS signal of the terminal is searched, and the GPS signal is valid; third type of auxiliary information: based on the current POI information, there is an access environment for non-terrestrial networks; The judgment module is used to judge in sequence whether the terminal meets the requirements of the first type of auxiliary information, the second type of auxiliary information and the third type of auxiliary information in the current environment; if all are met, the terminal is connected to the non-terrestrial network; if one item is not met, the terminal is not connected to the non-terrestrial network.

[0008] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the auxiliary information-based non-terrestrial network search method when executing the computer program.

[0009] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the auxiliary information-based non-terrestrial network search method.

[0010] Compared with the prior art, the non-terrestrial network search method, device, equipment and medium based on auxiliary information provided by the present invention have the following effects: 1. By comprehensively considering a variety of auxiliary information, it is possible to more accurately determine whether the terminal can successfully access the non-terrestrial network, thereby improving the success rate of the terminal accessing the non-terrestrial network.

[0011] 2. Through sequential judgment logic, if the conditions are not met at any step, the terminal will not access the network, which helps to avoid unnecessary resource consumption, optimize the use of network resources, and shorten the time it takes for the terminal to resume service.

[0012] 3. The terminal will access only when all conditions are met, reducing the risk of communication failure due to poor signals or unsuitable environment, enhancing network reliability and improving user experience.

[0013] 4. Based on real-time GPS signals and POI information, it can dynamically evaluate the access conditions of the current environment, so as to better adapt to different environmental conditions and improve the terminal's non-terrestrial network access capabilities in complex scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0015] Figure 1 is a flowchart of a non-terrestrial network search method based on auxiliary information in one embodiment; Figure 2 is a structural block diagram of a non-terrestrial network search device based on auxiliary information in one embodiment; Figure 3 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment.

[0016] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] It should be noted that the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0019] The following will describe the implementation of the present invention in detail with reference to the accompanying drawings in the embodiment diagram of the present invention.

[0020] Example 1 This embodiment discloses a non-terrestrial network search method based on auxiliary information, by determining the auxiliary information for the terminal to search for the non-terrestrial network, and then judging in order whether the terminal meets the requirements of the auxiliary information in the current environment, if all are satisfied, the terminal is connected to the non-terrestrial network; if one item is not satisfied, the terminal is not connected to the non-terrestrial network. By combining a variety of auxiliary information for comprehensive judgment, the success rate of the terminal accessing the non-terrestrial network is improved, the resource occupation time is reduced, and the time for the terminal to resume service is shortened.

[0021] like Figure 1As shown, the non-terrestrial network search method based on auxiliary information provided in this embodiment includes: determining auxiliary information for a terminal to search for a non-terrestrial network, where the auxiliary information includes three types, specifically: The first type of auxiliary information: calculated based on the current pointing angle of the terminal to the base station and the gain information of the terminal antenna, the terminal meets the minimum communication requirements.

[0022] The second type of auxiliary information: searching for the GPS signal of the terminal, and the GPS signal is valid.

[0023] The third type of auxiliary information: based on the current POI information, there is an access environment of non-ground network.

[0024] Then, determine in order whether the terminal meets the requirements of the first type of auxiliary information, the second type of auxiliary information and the third type of auxiliary information in the current environment; if all are met, the terminal is connected to the non-terrestrial network; if one item is not met, the terminal is not connected to the non-terrestrial network.

[0025] It is understandable that, limited by the design of the terminal antenna, the terminal device can only receive valid non-terrestrial network signals in some postures. Generally speaking, the accelerometer and gyroscope carried by the terminal can be used to determine the position of the terminal antenna. The terminal is allowed to perform a non-terrestrial network search when and only when the terminal antenna connected to the non-terrestrial network is within the communication range. Therefore, the communication range can be determined based on the terminal antenna design. Specifically, it is assumed that the terminal antenna connected to the non-terrestrial network is only located at the top of the terminal device, and the terminal antenna is an omnidirectional antenna. Based on the communication link margin of the non-terrestrial network, the terminal antenna needs to provide at least dB gain can meet the communication requirements of the non-terrestrial network communication system. Therefore, for the typical communication angle (-60°, 60°), the terminal antenna connected to the non-terrestrial network can meet the gain requirements of the system only at some attitude angles. The range included in the set of these attitude angles is the communicable range of the terminal. If the attitude angle of the terminal is outside the communicable range, the terminal cannot communicate with the non-terrestrial network. In this case, the terminal should not perform related operations of the non-terrestrial network communication, such as searching the network. Based on this, the first type of auxiliary information is designed, that is, the terminal calculates the current pointing angle of the base station and the gain information of the terminal antenna to determine whether the gain information of the terminal antenna at the current pointing angle reaches the minimum gain level. If it does, it means that the terminal meets the minimum communication requirements.

[0026] When determining the second type of auxiliary information, the effectiveness of the terminal's search for non-terrestrial networks is determined based on the effectiveness of the terminal's GPS signal, that is, the effectiveness of the GPS signal is used to determine whether the terminal's location can receive non-terrestrial network signals well. Due to the particularity of non-terrestrial network communications, the terminal can only communicate with non-terrestrial networks in an area without obstructions on the top, which is the same as the satellite navigation system. Taking into account the working characteristics of satellite navigation, for most terminal devices, the navigation satellite signal will be continuously searched for a long time to calculate the terminal's position, which allows the terminal to determine whether the terminal's current environment can receive non-terrestrial network signals by judging the effectiveness of the current satellite navigation signal. And the terminal antenna design for satellite navigation of most terminal devices takes into account various terminal postures, so the terminal can effectively receive satellite navigation signals in almost all postures. Therefore, when the GPS signal is valid, it means that the terminal has the conditions to perform non-terrestrial network peer-related operations.

[0027] In addition, the third type of auxiliary information is used, that is, the terminal also determines whether there is an access environment for non-ground networks based on the current POI (Point of Interest) information, such as a typical subway, underground garage, or shopping mall. When the terminal recognizes that the current location is in these indoor or underground closed environments through POI information, the terminal upper system should instruct the physical layer to disable the search behavior of non-ground networks. POI can be confirmed through multi-dimensional information such as WIFI, cellular network, positioning information (which can be located through the network), etc.

[0028] It can be seen that the present invention can more accurately determine whether the terminal can successfully access the non-terrestrial network by comprehensively considering a variety of auxiliary information, thereby improving the success rate of the terminal accessing the non-terrestrial network. In addition, through the sequential judgment logic, if the conditions are not met at any step, the terminal will not access the network, which helps to avoid unnecessary resource consumption, optimize the use of network resources, and shorten the time for the terminal to restore service. In addition, the terminal will only access when all conditions are met, reducing the risk of communication failure due to poor signal or unsuitable environment, enhancing the reliability of the network, and improving the user experience. Furthermore, based on the real-time GPS signal and POI information, the access conditions of the current environment can be dynamically evaluated, so as to better adapt to different environmental conditions and improve the terminal's non-terrestrial network access capabilities in complex scenarios.

[0029] In one of the embodiments, it also includes: if the terminal meets the requirements of the first type of auxiliary information, the second type of auxiliary information and the third type of auxiliary information in the current environment, it is also determined whether the terminal has an upper layer data transmission requirement, and if so, the terminal is connected to the non-terrestrial network.

[0030] It is understandable that terminal devices for some special application scenarios, such as IoT devices for indicator monitoring, require a longer battery life. In most cases, these devices should enter a dormant state because they only have uplink data transmission needs. Therefore, the network search behavior can be enabled and disabled according to the upper-layer data transmission needs of the terminal. Only when the terminal has a data transmission demand or is about to transmit data, the terminal will search for a non-terrestrial network to access the non-terrestrial network and perform data transmission tasks. Therefore, if the terminal meets the requirements of the first type of auxiliary information, the second type of auxiliary information, and the third type of auxiliary information in the current environment, it is also necessary to determine whether the terminal has an upper-layer data transmission demand. If so, the terminal is connected to the non-terrestrial network.

[0031] In one embodiment, the method further includes: when the terminal is at the edge of the ground network and is required by the network to perform a cell handover, judging whether there is a non-ground network transiting at present according to the system message of the non-ground network cell broadcasted by the cell; if not, setting the first prohibited search time according to the non-ground network cell that transits the fastest During the first prohibited search time, the terminal does not search for non-terrestrial networks.

[0032] In one embodiment, the base station further includes setting a second forbidden search time when performing cell switching configuration. If there is no available non-terrestrial network in the current environment, a second prohibited search time is configured for the terminal through the base station, and the terminal does not search for non-terrestrial networks during the second prohibited search time.

[0033] In one embodiment, the priority of the second forbidden search time is greater than the first forbidden search time. This means that if there are two forbidden search times at the same time, the terminal should give priority to the setting of the second forbidden search time, and the first forbidden search time will be invalid.

[0034] It is understandable that the main purpose of setting the no-search time is to optimize the terminal's network search behavior, save battery life, and avoid unnecessary network searches, especially when the signal is weak or there is no network coverage.

[0035] Setting the priority of the second forbidden search time to be higher than the first forbidden search time indicates that when there is no available non-terrestrial network, the terminal should be more inclined to remain in a dormant state rather than frequently searching for non-terrestrial networks, thereby improving overall energy efficiency and resource management.

[0036] In one of the embodiments, the first type of auxiliary information includes: based on the distance between the base station and the terminal, and the working capacity of each unit of the current RF link of the terminal, according to the link margin design of the communication system, the power of the signal that the terminal can receive is calculated, and it is determined whether the power meets the minimum communication requirements of the terminal receiver.

[0037] If the power meets the minimum communication requirement of the terminal receiver, the terminal allows the non-terrestrial network search operation to be performed; otherwise, the non-terrestrial network search function of the terminal will be disabled.

[0038] In one of the embodiments, based on the antenna gain of the terminal antenna at various angles and the margin of the non-ground network communication link, the base station closest to the terminal within the visible range of the terminal is determined through ephemeris information, and the position of the base station is used as the base station position for calculating the distance between the base station and the terminal.

[0039] It can be understood that the terminal calculates the base station closest to the terminal within the current visible range based on the antenna gain of the terminal antenna connected to the non-terrestrial network at various angles, combined with the typical non-terrestrial network communication link margin, using ephemeris information, and uses the position of the base station as the base station position for calculating the distance between the base station and the terminal.

[0040] After determining the location of the base station, calculate the straight-line distance between the base station and the terminal. In addition, each RF unit in the RF link of the terminal may not be able to work at its maximum capacity due to the influence of other control strategies or working status. Therefore, when calculating the minimum communication requirement of the terminal, it is necessary to comprehensively consider the working capacity of each RF unit in the current RF link of the terminal and refer to the link margin design of the communication system to calculate the power of the signal that the terminal can receive, and calculate the minimum communication requirement of the terminal accordingly. If the power meets the minimum communication requirement of the terminal receiver, the terminal allows the non-terrestrial network search operation to be performed; otherwise, the non-terrestrial network search function of the terminal will be disabled.

[0041] It is worth noting that, since non-terrestrial network communications are affected by the atmospheric environment, the terminal can also periodically update the relevant correction coefficients from the server to correct the estimated results of the link margin calculation, thereby improving the accuracy of the estimation. In addition, the RF unit, receiver, etc. of the terminal belong to the conventional unit structure in the terminal and will not be described in detail here.

[0042] Example 2 Based on the non-terrestrial network search method based on auxiliary information in Example 1, this embodiment discloses a non-terrestrial network search device based on auxiliary information, such as Figure 2 As shown, the non-terrestrial network search device based on auxiliary information includes: an auxiliary information construction module 401 and a judgment module 402, wherein: The auxiliary information construction module 401 is used to determine the auxiliary information for the terminal to search for non-ground networks, and the auxiliary information includes: the first type of auxiliary information: calculated based on the current pointing angle of the terminal to the base station and the gain information of the terminal antenna, the terminal meets the minimum communication requirements; the second type of auxiliary information: searching for the GPS signal of the terminal, the GPS signal is valid; the third type of auxiliary information: based on the current POI information, there is an access environment for non-ground networks.

[0043] The judgment module 402 is used to judge in sequence whether the terminal meets the requirements of the first type of auxiliary information, the second type of auxiliary information and the third type of auxiliary information in the current environment; if all are met, the terminal is connected to the non-terrestrial network; if one item is not met, the terminal is not connected to the non-terrestrial network.

[0044] In this embodiment, the specific working process and working principle of the auxiliary information construction module 401 and the judgment module 402 are the same as those in the method of embodiment 1, so they are not described in detail in this embodiment. Each unit module can be implemented in whole or in part by software, hardware, or a combination thereof. Each unit module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each of the above unit modules.

[0045] Example 3 like Figure 3 The terminal device disclosed in this embodiment includes a transmitter, a receiver, a memory, and a processor. The transmitter is used to send instructions and data, the receiver is used to receive instructions and data, the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions stored in the memory to implement the method in the above-mentioned embodiment 1.

[0046] It should be noted that the above memory can be independent or integrated with the processor. When the memory is independently provided, the terminal device further includes a bus for connecting the memory and the processor.

[0047] Example 4 This embodiment discloses a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the method in the above-mentioned embodiment 1 is implemented.

[0048] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0049] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A non-terrestrial network search method based on auxiliary information, characterized in that: The method includes: determining auxiliary information for a terminal to search for a non-terrestrial network, the auxiliary information including: The first type of auxiliary information: calculated based on the current pointing angle of the terminal to the base station and the gain information of the terminal antenna, the terminal meets the minimum communication requirements; The second type of auxiliary information: searching for the GPS signal of the terminal, and the GPS signal is valid; The third type of auxiliary information: based on the current POI information, there is an access environment for non-ground networks; Determine in sequence whether the terminal meets the requirements of the first type of auxiliary information, the second type of auxiliary information and the third type of auxiliary information in the current environment; if all are met, the terminal is connected to the non-terrestrial network; if one item is not met, the terminal is not connected to the non-terrestrial network.

2. The non-terrestrial network search method based on auxiliary information according to claim 1, characterized in that: Also includes: If the terminal meets the requirements of the first type of auxiliary information, the second type of auxiliary information and the third type of auxiliary information in the current environment, it is also determined whether the terminal has upper layer data transmission requirements. If so, the terminal is connected to a non-terrestrial network.

3. The non-terrestrial network search method based on auxiliary information according to claim 1 or 2, characterized in that: Also includes: When the terminal is at the edge of the terrestrial network and is required by the network to perform cell handover, it determines whether there is a non-terrestrial network transit according to the system message of the non-terrestrial network cell broadcast by the cell; If not, a first forbidden search time is set according to the fastest transit non-terrestrial network cell, and during the first forbidden search time, the terminal does not search for non-terrestrial networks.

4. The non-terrestrial network search method based on auxiliary information according to claim 3, characterized in that: Also includes: The base station sets a second prohibited search time when performing cell handover configuration; If there is no available non-terrestrial network in the current environment, a second forbidden search time is configured for the terminal through the base station, and the terminal does not search for non-terrestrial networks during the second forbidden search time.

5. The non-terrestrial network search method based on auxiliary information according to claim 4, characterized in that: The priority of the second prohibited search time is higher than that of the first prohibited search time.

6. The non-terrestrial network search method based on auxiliary information according to claim 1, characterized in that: The first type of auxiliary information includes: based on the distance between the base station and the terminal, and the working capacity of each unit of the current RF link of the terminal, according to the link margin design of the communication system, calculating the power of the signal that the terminal can receive, and judging whether the power meets the minimum communication requirements of the terminal receiver; If the power meets the minimum communication requirement of the terminal receiver, the terminal is allowed to perform the non-terrestrial network search operation; otherwise, the non-terrestrial network search function of the terminal will be disabled.

7. The non-terrestrial network search method based on auxiliary information according to claim 6, characterized in that: Methods for determining a base station include: According to the antenna gain of the terminal antenna at various angles and the margin of the non-ground network communication link, the base station closest to the terminal within the terminal's visible range is determined through the ephemeris information, and the position of the base station is used as the base station position for calculating the distance between the base station and the terminal.

8. A non-terrestrial network search device based on auxiliary information, characterized in that: The device comprises: An auxiliary information construction module is used to determine auxiliary information for the terminal to search for non-terrestrial networks, the auxiliary information including: first type of auxiliary information: the terminal meets the minimum communication requirements according to the current pointing angle of the terminal to the base station and the gain information of the terminal antenna; second type of auxiliary information: the GPS signal of the terminal is searched, and the GPS signal is valid; third type of auxiliary information: based on the current POI information, there is an access environment for non-terrestrial networks; The judgment module is used to judge in sequence whether the terminal meets the requirements of the first type of auxiliary information, the second type of auxiliary information and the third type of auxiliary information in the current environment; if all are met, the terminal is connected to the non-terrestrial network; if one item is not met, the terminal is not connected to the non-terrestrial network.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the non-terrestrial network search method based on auxiliary information according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the non-terrestrial network search method based on auxiliary information described in any one of claims 1 to 7 are implemented.

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