WO2021068675A1 - 终端的网络接入方法、装置、电子设备及存储介质 - Google Patents

终端的网络接入方法、装置、电子设备及存储介质 Download PDF

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Publication number
WO2021068675A1
WO2021068675A1 PCT/CN2020/111568 CN2020111568W WO2021068675A1 WO 2021068675 A1 WO2021068675 A1 WO 2021068675A1 CN 2020111568 W CN2020111568 W CN 2020111568W WO 2021068675 A1 WO2021068675 A1 WO 2021068675A1
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WO
WIPO (PCT)
Prior art keywords
signal
terminal
base station
quality
scanning
Prior art date
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Ceased
Application number
PCT/CN2020/111568
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English (en)
French (fr)
Inventor
康绍莉
缪德山
韩波
孙韶辉
王映民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Datang Mobile Communications Equipment Co Ltd filed Critical Datang Mobile Communications Equipment Co Ltd
Priority to JP2022521463A priority Critical patent/JP7379687B2/ja
Priority to US17/766,737 priority patent/US12261681B2/en
Priority to KR1020227011778A priority patent/KR102798529B1/ko
Priority to EP20874679.2A priority patent/EP4044627B1/en
Publication of WO2021068675A1 publication Critical patent/WO2021068675A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • 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
    • H04B7/18513—Transmission in a satellite or space-based system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • 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
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
    • H04J11/0073—Acquisition of primary synchronisation channel, e.g. detection of cell-ID within cell-ID group
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
    • H04J11/0076—Acquisition of secondary synchronisation channel, e.g. detection of cell-ID group
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • 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
    • 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

Definitions

  • This application relates to the field of communication technology, and in particular to a terminal network access method, device, electronic equipment, and storage medium.
  • the terminal and the network in the prior art have known ephemeris information and geographic location information, so that the terminal can quickly and accurately connect Into the network.
  • the terminal there are many ways to notify the ephemeris information, such as pre-setting before leaving the factory, and sending of system messages.
  • the geographic location of the terminal such as GPS or Beidou positioning or network positioning.
  • the geographic location can be issued through system messages.
  • the system design For a satellite communication system that performs system design based on ephemeris information, if the ephemeris information obtained by the terminal and/or the network is inaccurate, it will challenge the accuracy of the system design.
  • the system design has the following constraints: search for satellites into the network scenario, in order to ensure that the terminal accesses the network within a beam, the ephemeris angle deviation needs to be Within ⁇ 2 degrees; use ephemeris for program tracking scenes, to achieve 1/4 half-power beamwidth tracking, the ephemeris angle deviation needs to be within ⁇ 0.1 degrees.
  • the embodiments of the present application propose a terminal network access method, device, electronic device, and storage medium.
  • an embodiment of the present application proposes a network access method for a terminal, including:
  • the terminal determines the beam scanning interval and scanning frequency point, and receives the base station signal sent or forwarded by the satellite;
  • the terminal sets at least one beam scanning interval within the range covered by the communication scanning angle, and each beam scanning interval sets at least one scanning frequency point.
  • an embodiment of the present application also proposes a network access device for a terminal, including:
  • the signal receiving module is configured to determine the beam scanning interval and scanning frequency point, and receive the base station signal sent or forwarded by the satellite;
  • a quality determining module configured to determine the downlink signal quality of the base station according to the base station signal
  • a network access module configured to execute a network access procedure of the terminal if it is determined according to the downlink signal quality that the terminal can successfully search for satellites;
  • the terminal sets at least one beam scanning interval within the range covered by the communication scanning angle, and each beam scanning interval sets at least one scanning frequency point.
  • an embodiment of the present application also proposes a terminal, including:
  • At least one processor At least one processor
  • At least one memory communicatively connected with the processor, wherein:
  • the memory stores program instructions that can be executed by the processor, and the processor can execute the foregoing method by calling the program instructions.
  • the embodiments of the present application also propose a non-transitory computer-readable storage medium, the non-transitory computer-readable storage medium storing a computer program, and the computer program causes the computer to execute the above method.
  • the embodiment of the application determines the downlink signal quality of the base station through the base station signal sent or forwarded by the satellite, and further determines whether the terminal can successfully search for the satellite according to the downlink signal quality, and does not rely on ephemeris information, so that the terminal can be accurate and fast Search satellites by ground and successfully access and communicate, which is convenient for users to set the use status of the terminal and extend the life cycle of the terminal.
  • FIG. 1 is a schematic flowchart of a method for network access of a terminal according to an embodiment of the application
  • FIG. 2 is a schematic flowchart of a method for network access of a terminal according to another embodiment of the application
  • FIG. 3 is a schematic structural diagram of a network access device for a terminal according to an embodiment of this application.
  • Fig. 4 is a logical block diagram of a terminal provided by an embodiment of the application.
  • FIG. 1 shows a schematic flowchart of a method for network access of a terminal provided by this embodiment, including:
  • the terminal determines the beam scanning interval and scanning frequency point, and receives base station signals sent or forwarded by satellites.
  • the terminal sets at least one beam scanning interval within the range covered by the communication scanning angle, and each beam scanning interval sets at least one scanning frequency point.
  • the communication scanning angle may comprehensively consider the communication angle and the azimuth angle, or only consider the communication angle, and the scanning interval is the range of the scanning angle.
  • the scanning frequency points cover all the working frequency points of the user link, and the scanning order of each frequency point is the same as the arrangement order of the satellite beams in the system.
  • the terminal scanning sequence is the frequency point first and then the interval, that is, the scanning of all scanning frequency points in a certain beam scanning interval is completed first, and then the beam scanning interval is changed.
  • the scanning information of the terminal needs to be determined. for:
  • the terminal divides the working range of its communication angle into L intervals. Assuming that the intervals are equally spaced, the terminal's scanning range for a single frequency point can be defined as the following 2L scanning intervals:
  • each beam scanning interval corresponds to scanning of K different scanning frequency points, therefore, the total scanning interval of the terminal has 2KL.
  • the number of the scan interval is marked as:
  • the terminal will perform frequency point scanning in each beam scanning interval according to the above sequence, and receive base station signals sent or forwarded by satellites at each scanning frequency point in each beam scanning interval.
  • the terminal For each scanning frequency point in each beam scanning interval, the terminal receives the downlink signal of the base station, that is, the base station signal.
  • the base station signal includes at least SSB (Synchronous Signal Block) and CRS (Common Reference Signal) .
  • the SSB or CRS signal can be selectively obtained according to the set period.
  • the terminal When the base station is integrated with the satellite, the terminal receives the base station signal sent by the satellite; when the base station is separated from the satellite, the terminal receives the base station signal forwarded by the satellite.
  • the downlink signal quality of the base station is determined according to the signal measurement value of the base station signal or other methods, for example: when the signal measurement value exceeds the preset value If the strength is set, it means that the quality of the downlink signal is very good, otherwise it means that the quality of the downlink signal is not good.
  • the quality of the downlink signal to obtain the terminal's search capability If the downlink signal quality is not good, it means that the terminal's search capability is weak, the search is unsuccessful, and the terminal's network access process cannot be executed. Scan the frequency to receive the base station signal sent or forwarded by the satellite for judgment; if the downlink signal quality is good, it means that the terminal has a strong star search ability, and the star search is successful, and the terminal's network access process can be executed.
  • the terminal prepares for network access according to whether the satellite search is successful: if the satellite search is unsuccessful, the terminal will change the beam scanning interval to scan, and then re-acquire the downlink received signal in the scanning interval (the base station sent or forwarded by the satellite) Signal), and then obtain the quality of the downlink signal of the base station, and then obtain the star search capability of the terminal, and finally prepare for the terminal access; if the star search is successful, the network access process of the terminal is executed.
  • the downlink signal quality of the base station is determined by the base station signal sent or forwarded by the satellite, and the downlink signal quality is further used to determine whether the terminal can successfully search for satellites, without relying on ephemeris information, so that the terminal can accurately and quickly search for satellites and successfully access. And communication, it is convenient for users to set the use status of the terminal, and extend the life cycle of the terminal.
  • S102 when the base station signal is an SSB signal, S102 specifically includes:
  • the signal measurement value of PSS (Primary Synchronous Signal) or SSS (Secondary Synchronous Signal) in the SSB signal is greater than the first measurement preset value, it is determined that the downlink signal quality of the base station is The quality is up to standard; or,
  • the correct cell ID is detected according to the SSB signal, it is determined that the quality of the downlink signal of the base station is up to standard.
  • the signal measurement value includes: RSRP (Reference Signal Receiving Power, reference signal received power) of the synchronization signal or RSRQ (Reference Signal Receiving Quality, reference signal reception quality) of the synchronization signal.
  • RSRP Reference Signal Receiving Power, reference signal received power
  • RSRQ Reference Signal Receiving Quality, reference signal reception quality
  • the first measurement preset value is a threshold value of the signal measurement value of the PSS or SSS signal.
  • the quality compliance means that the quality of the downlink signal of the base station meets the quality requirement.
  • the PSS or SSS signal measurement value in the SSB signal is greater than the first measurement preset value, it is determined that the quality of the downlink signal of the base station is up to the quality standard; otherwise, it is determined that the quality of the downlink signal of the base station is not up to the standard.
  • the downlink signal quality of the base station is determined to be qualified; if the correct cell ID cannot be detected based on the SSB signal, the downlink signal quality of the base station is determined to be substandard.
  • the determining the downlink signal quality of the base station according to the base station signal specifically includes:
  • the signal measurement value of the CRS signal is greater than the second measurement preset value, or the SNR (Signal to Noise Ratio) at the receiving end of the CRS signal is greater than the third measurement preset value, determine the downlink signal quality of the base station To meet quality standards;
  • the signal measurement value includes: the RSRP of the synchronization signal or the RSRQ of the synchronization signal.
  • the second measurement preset value is the threshold value of the signal measurement value of the CRS signal.
  • the third measurement preset value is the threshold value of the SNR of the receiving end of the CRS signal.
  • the quality standard is the same as the content shown in the previous embodiment, which means that the quality of the downlink signal of the base station meets the quality requirement.
  • the downlink signal quality is obtained according to the CRS signal measurement value. If the signal measurement value is greater than or equal to the second measurement preset value, it means that the downlink signal quality is good, that is, the quality meets the standard; if the CRS signal measurement value is less than the second measurement preset value, Set a value to indicate that the quality of the downlink signal is poor, that is, the quality is not up to standard.
  • the downlink signal quality is obtained according to the SNR of the CRS. If the SNR is greater than or equal to the third measurement preset value, it indicates that the downlink signal quality is good; if the SNR is less than the third measurement preset value, it indicates that the downlink signal quality is poor.
  • S103 specifically includes:
  • the terminal can successfully search for satellites, and record the current beam scanning interval, scanning frequency point, and search time for satellites.
  • the terminal when the quality of the downlink signal of the base station is up to the standard, it is determined that the terminal can successfully search for satellites, and record the scanning interval, scanning frequency and search time of the terminal at this time; then according to the beam scanning interval, scanning frequency and search satellite Time to calculate the ephemeris information, determine the current star and then establish the ephemeris of the entire constellation, and perform the normal access process.
  • the access process can be performed with reference to the established ephemeris. For example, because the terminal knows its stay time in the corresponding beam and other information, if the time is long enough, the terminal will initiate access in this beam, and if the time is found to be too short, the terminal will wait to enter the next beam before initiating access. Enter
  • the network access method of the terminal further includes:
  • the quality of the downlink signal of the base station is not up to standard, it is replaced with a new beam scanning interval and scanning frequency point, and the base station signal sent or forwarded by the satellite is received at the scanning frequency point of the new beam scanning interval.
  • the terminal's star search capability is obtained according to whether the downlink signal quality meets the standard: if the downlink signal quality is not up to standard, it means that the terminal's star search ability is weak, the star search is unsuccessful, and the terminal's network access process cannot be performed. Re-receive the base station signal sent or forwarded by the satellite at the new scanning frequency point for judgment.
  • the terminal's satellite search ability is weak and cannot successfully search satellites. It needs to be replaced with a new beam scanning interval and scanning frequency point, and in the new beam scanning interval After scanning the frequency point of the base station, re-receive the signal sent by the base station to finally determine that the downlink signal quality of the base station reaches the standard, and then execute the network access process of the terminal.
  • S101 specifically includes:
  • each scanning frequency point is sorted according to the frequency reuse mode of the satellite, and a periodic round is performed.
  • the search is not performed in three-dimensional space, but relative to the movement direction of the satellite, scanning is only performed on the orbital surface where the satellite's trajectory is located; or, in the vertical direction of the terminal (under-satellite point) Perform a satellite search and wait for the satellite signal to arrive without performing an angle scan.
  • the terminal only needs to search in the scan interval where the north-south direction is located, instead of performing a full-scale satellite search on the spherical surface; if the satellite is moving in the east-west direction, the terminal only needs to search in the north-south direction. Searching is performed in the scanning interval in the east-west direction, without the need for a full-scale satellite search on the spherical surface.
  • the terminal actually uses the range based on ⁇ (degree) to set the scanning interval when searching for the terminal, where ⁇ and ⁇ is the same as the beam of the satellite
  • the scan range is related.
  • the terminal can search for satellites only at a specific angle.
  • the terminal can search for satellites in the vertical direction (under-satellite point) and wait for the satellite signal to arrive without performing angle scanning.
  • the search is performed in a specific scanning interval or a specific scanning angle. There is no need to perform an all-round satellite search on the sphere, and the satellite can be searched quickly, so as to quickly access the network for communication. .
  • this embodiment can solve the problem of the terminal searching for satellites and accessing the network when the ephemeris information is inaccurate or there is no ephemeris information. As shown in Figure 2, this embodiment Specifically, it includes the following steps:
  • S201 Determine scan information of the terminal. Specifically, the terminal sets multiple scan intervals within the range covered by the scan angle, each scan interval sets multiple scan frequency points, and scans one by one in order.
  • the downlink signal can be SSB or CRS, and the period can be configured;
  • the terminal search is unsuccessful; If the SSB signal is used for judgment, if the cell ID can be detected based on PSS, SSS and PBCH (Physical Broadcast Channel, physical broadcast channel) or the signal measurement value RSRP/RSRQ is greater than the first measurement preset value, it means that the terminal can successfully search for satellites. ; Otherwise, it means that the terminal search is unsuccessful;
  • PSS Physical Broadcast Channel, physical broadcast channel
  • PBCH Physical Broadcast Channel, physical broadcast channel
  • the terminal can search satellites successfully; if the RSRP/RSRQ is less than the predetermined second measurement preset value or If the SNR is less than the third measurement preset value, it means that the terminal search is unsuccessful.
  • S204 Prepare for terminal access.
  • S2041 or S2042 is selectively executed according to the result of step S203.
  • the terminal information is updated. Specifically, if the terminal fails to search for satellites, the beam scanning interval is changed to scan, and step S202 is performed.
  • S2042 information recording and terminal access. Specifically, if the terminal can search for satellites successfully, record the time, frequency, terminal scanning angle and other information of the searched satellites, calculate the ephemeris information of the satellite and other satellites in the constellation, and start the terminal's access process.
  • the terminal can access in the current beam or start access from the next adjacent beam.
  • This embodiment does not rely on the ephemeris information for terminal access, which not only removes the cost of obtaining the ephemeris, but also enables the user to conveniently set the use state of the terminal and prolong the life cycle of the terminal.
  • Fig. 3 shows a schematic structural diagram of a network access device for a terminal provided in this embodiment.
  • the device includes: a signal receiving module 301, a quality determining module 302, and a network access module 303, wherein:
  • the signal receiving module 301 is configured to determine the beam scanning interval and scanning frequency point, and receive base station signals sent or forwarded by satellites;
  • the quality determining module 302 is configured to determine the downlink signal quality of the base station according to the base station signal;
  • the network access module 303 is configured to execute a network access procedure of the terminal if it is determined according to the downlink signal quality that the terminal can successfully search for satellites;
  • the terminal sets at least one beam scanning interval within the range covered by the communication scanning angle, and each beam scanning interval sets at least one scanning frequency point.
  • the network access device of the terminal described in this embodiment can be used to execute the foregoing method embodiments, and its principles and technical effects are similar, and will not be repeated here.
  • the terminal includes: a processor (processor) 401, a memory (memory) 402, and a bus 403;
  • the processor 401 and the memory 402 communicate with each other through the bus 403;
  • the processor 401 is configured to call program instructions in the memory 402 to execute the following methods:
  • the terminal sets at least one beam scanning interval within the range covered by the communication scanning angle, and each beam scanning interval sets at least one scanning frequency point.
  • the downlink signal quality of the base station is determined by the base station signal sent or forwarded by the satellite, and the downlink signal quality is further used to determine whether the terminal can successfully search for satellites, without relying on ephemeris information, so that the terminal can accurately and quickly search for satellites and successfully access. And communication, it is convenient for users to set the use status of the terminal, and extend the life cycle of the terminal.
  • the processor specifically executes:
  • the signal measurement value of the primary synchronization signal PSS or the secondary synchronization signal SSS in the SSB signal is greater than the first measurement preset value, it is determined that the quality of the downlink signal of the base station is up to the quality standard; or,
  • the correct cell ID is detected according to the SSB signal, it is determined that the quality of the downlink signal of the base station is up to standard;
  • the signal measurement value includes: the reference signal received power RSRP of the synchronization signal or the reference signal received quality RSRQ of the synchronization signal.
  • the processor specifically executes:
  • the signal measurement value of the CRS signal is greater than the second measurement preset value, or the SNR of the receiving end of the CRS signal is greater than the third measurement preset value, it is determined that the quality of the downlink signal of the base station is up to the standard;
  • the signal measurement value includes: the RSRP of the synchronization signal or the RSRQ of the synchronization signal.
  • the processor specifically executes:
  • the terminal can successfully search for satellites, and record the beam scanning interval, the scanning frequency point, and the search time;
  • the processor specifically executes:
  • the quality of the downlink signal of the base station is not up to standard, it is replaced with a new beam scanning interval and scanning frequency point, and at the scanning frequency point of the new beam scanning interval, the base station signal sent or forwarded by the satellite.
  • the processor specifically executes:
  • each scanning frequency point is sorted according to the frequency reuse mode of the satellite, and is periodically rotated.
  • the terminal described in this embodiment can be used to execute the foregoing method embodiments, and its principles and technical effects are similar, and will not be repeated here.
  • the computer program product includes a computer program stored on a non-transitory computer-readable storage medium.
  • the computer program includes program instructions. When the program instructions are executed by a computer, the computer Able to perform the following methods:
  • the terminal sets at least one beam scanning interval within the range covered by the communication scanning angle, and each beam scanning interval sets at least one scanning frequency point.
  • the terminal sets at least one beam scanning interval within the range covered by the communication scanning angle, and each beam scanning interval sets at least one scanning frequency point.
  • the device embodiments described above are merely illustrative, where the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in One location, or it can be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the objectives of the solutions of the embodiments. Those of ordinary skill in the art can understand and implement without creative work.
  • each embodiment can be implemented by software and a required general hardware platform, and of course, it can also be implemented by hardware.
  • the embodiments of the present application provide a software product that can be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions to enable a computer device ( For example, a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiment.

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Abstract

本申请实施例公开了一种终端的网络接入方法、装置、电子设备及存储介质，方法包括：终端确定波束扫描区间和扫描频点，并接收卫星发送或转发的基站信号；根据所述基站信号确定所述基站的下行信号质量；若根据所述下行信号质量确定所述终端能成功搜星，则执行所述终端的网络接入流程。本申请实施例通过卫星发送或转发的基站信号确定基站的下行信号质量，进一步根据下行信号质量确定终端能否成功搜星，不依赖星历信息，使得终端能够准确、快速地搜星并成功接入和通信，方便用户设置终端的使用状态，延长终端的生命周期。

Description

终端的网络接入方法、装置、电子设备及存储介质
相关申请的交叉引用
本申请要求于2019年10月11日提交的申请号为201910964696.2，发明名称为“终端的网络接入方法、装置、电子设备及存储介质”的中国专利申请的优先权，其通过引用方式全部并入本文。
技术领域
本申请涉及通信技术领域，具体涉及一种终端的网络接入方法、装置、电子设备及存储介质。
背景技术
针对基于地面5G(5th Generation，第五代移动通信技术)制式设计的卫星移动通信系统，现有技术中终端和网络都已知星历信息和地理位置信息，从而能够让终端快速且准确地接入网络。对于终端来说，星历信息通知的方式有多种，例如出厂前预置、系统消息下发等。终端地理位置的获取方式也有多种，例如GPS或者北斗定位或者网络定位等，通常地理位置可以通过系统消息来进行下发。
对于基于星历信息来进行系统设计的卫星通信系统，如果终端和/或网络获取的星历信息不准确，将会对系统设计的准确度带来挑战。例如，以LEO(Low Earth Orbit，低轨道)卫星通信系统为例，按照初步分析，系统设计中有如下约束条件：搜星入网场景，为保证终端在一个波束内入网，星历角度偏差需在±2度内；利用星历进行程序跟踪场景，要实现1/4半功率波束宽度范围跟踪，星历角度偏差需在±0.1度内。
但是，对于预置了星历信息的终端，如果长时间关机后再开机，其对应的当前星历信息与前期预置的星历信息存在偏差，从而面临基于其预置的星历信息搜星困难的情况，进而导致难以接入网络的问题。
发明内容
由于现有方法存在上述问题，本申请实施例提出一种终端的网络接入方法、装置、电子设备及存储介质。
第一方面，本申请实施例提出一种终端的网络接入方法，包括：
终端确定波束扫描区间和扫描频点，并接收卫星发送或转发的基站信号；
根据所述基站信号确定所述基站的下行信号质量；
若根据所述下行信号质量确定所述终端能成功搜星，则执行所述终端的网络接入流程；
其中，所述终端在通信扫描角覆盖的范围内，设置至少一个波束扫描区间，每个波束扫描区间设置至少一个扫描频点。
第二方面，本申请实施例还提出一种终端的网络接入装置，包括：
信号接收模块，配置为确定波束扫描区间和扫描频点，并接收卫星发送或转发的基站信号；
质量确定模块，配置为根据所述基站信号确定所述基站的下行信号质量；
网络接入模块，配置为若根据所述下行信号质量确定所述终端能成功搜星，则执行所述终端的网络接入流程；
其中，所述终端在通信扫描角覆盖的范围内，设置至少一个波束扫描区间，每个波束扫描区间设置至少一个扫描频点。
第三方面，本申请实施例还提出一种终端，包括：
至少一个处理器；以及
与所述处理器通信连接的至少一个存储器，其中：
所述存储器存储有可被所述处理器执行的程序指令，所述处理器调用所述程序指令能够执行上述方法。
第四方面，本申请实施例还提出一种非暂态计算机可读存储介质，所述非暂态计算机可读存储介质存储计算机程序，所述计算机程序使所述计算机执行上述方法。
由上述技术方案可知，本申请实施例通过卫星发送或转发的基站信号确定基站的下行信号质量，进一步根据下行信号质量确定终端能否成功搜星，不依赖星历信息，使得终端能够准确、快速地搜星并成功接入和通信，方便用户设置终端的使用状态，延长终端的生命周期。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些图获得其他的附图。
图1为本申请一实施例提供的一种终端的网络接入方法的流程示意图；
图2为本申请另一实施例提供的一种终端的网络接入方法的流程示意图；
图3为本申请一实施例提供的一种终端的网络接入装置的结构示意图；
图4为本申请一实施例提供的终端的逻辑框图。
具体实施方式
下面结合附图，对本申请的具体实施方式作进一步描述。以下实施例仅用于更加清楚地说明本申请的技术方案，而不能以此来限制本申请的保护范围。
图1示出了本实施例提供的一种终端的网络接入方法的流程示意图，包括：
S101、终端确定波束扫描区间和扫描频点，并接收卫星发送或转发的基站信号。
其中，所述终端在通信扫描角覆盖的范围内，设置至少一个波束扫描区间，每个波束扫描区间设置至少一个扫描频点。
所述通信扫描角可综合考虑通信仰角和方位角，也可只考虑通信仰角，扫描区间为扫描角的范围。
扫描频点涵盖用户链路全部的工作频点，各频点扫描顺序与系统中卫星波束的排列顺序相同。
具体地，终端扫描顺序为先频点后区间，即先完成某个波束扫描区间的所有扫描频点的扫描，再更换波束扫描区间。
以基于地面5G制式的低轨卫星通信系统为例，假设系统用户链路具有K个工作频点，系统定义的终端通信仰角工作范围为±θ(度)，首先需要确定终端的扫描信息，具体为：
终端将其通信仰角工作范围划分为L个区间，假设各区间等间隔，则终端针对单个频点的扫描范围可以定义为如下2L个扫描区间：
扫描区间n(1≤n≤L)：[-θ+(n-1)*2θ/L，-θ+n*2θ/L]
扫描区间m(L+1≤m≤2L)：[θ-(m-L-1)*2θ/L，θ-(m-L)*2θ/L]
考虑到系统支持K个工作频点，即每个波束扫描区间会对应K个不同扫描频点的扫描，因此，终端的总共扫描区间有2KL个。假设扫描区间的编号标记为：
扫描区间nK+k(0≤n<L,1≤k≤K)：[-θ+2nθ/L，-θ+(n+1)*2θ/L]
扫描区间mK+k(L≤m<2L,1≤k≤K)：[θ-(m-L)*2θ/L，θ-(m-L+1)*2θ/L]
终端将按照上述顺序，在各波束扫描区间内进行频点扫描，并在每个波束扫描区间的每个扫描频点，接收卫星发送或转发的基站信号。
S102、根据所述基站信号确定所述基站的下行信号质量。
针对各个波束扫描区间的各个扫描频点，终端接收基站的下行信号，即所述基站信号，该基站信号至少包括SSB(Synchronous Signal Block，同步信号块)和CRS(Common Reference Signal，公共参考信号)。可依据设置的周期，选择性地获得SSB或CRS信号。
当基站与卫星一体时，终端接收卫星发送的基站信号；当基站与卫星分离时，终端接收卫星转发的基站信号。
在每个波束扫描区间的每个扫描频点，接收卫星发送或转发的基站信号后，根据该基站信号的信号测量值或其它方式来确定基站的下行信号质量，例如：当信号测量值超过预设的强度，则表示下行信号质量很好，否则表示下行信号质量不好。
S103、若根据所述下行信号质量确定所述终端能成功搜星，则执行所述终端的网络接入流程。
根据下行信号质量的好坏来获得终端的搜星能力：如果下行信号质量不好，则表示终端的搜星能力弱，搜星不成功，无法执行终端的网络接入流程，需重新在新的扫描频点接收卫星发送或转发的基站信号进行判断；如果下行信号质量好，则表示终端的搜星能力强，搜星成功，可以执行终端的网络接入流程。
具体地，终端根据能否搜星成功来进行网络接入准备工作：如果搜星不成功，则终端将更换波束扫描区间进行扫描，进而重新获取扫描区间的 下行接收信号(卫星发送或转发的基站信号)，然后获得基站的下行信号的质量，再获得终端的搜星能力，最后进行终端接入准备工作；如果搜星成功，则执行终端的网络接入流程。
本实施例通过卫星发送或转发的基站信号确定基站的下行信号质量，进一步根据下行信号质量确定终端能否成功搜星，不依赖星历信息，使得终端能够准确、快速地搜星并成功接入和通信，方便用户设置终端的使用状态，延长终端的生命周期。
进一步地，在上述方法实施例的基础上，当所述基站信号为SSB信号时，S102具体包括：
若所述SSB信号中的PSS(Primary Synchronous Signal，主同步信号)或SSS(Secondary Synchronous Signal，辅同步信号)的信号测量值大于第一测量预设值，则确定所述基站的下行信号质量为质量达标；或，
若根据所述SSB信号检测出正确的小区ID，则确定所述基站的下行信号质量为质量达标。
其中，所述信号测量值包括：同步信号的RSRP(Reference Signal Receiving Power，参考信号接收功率)或同步信号的RSRQ(Reference Signal Receiving Quality，参考信号接收质量)。
所述第一测量预设值为PSS或SSS信号的信号测量值的阈值。
所述质量达标表示基站的下行信号质量满足质量要求。
举例来说，当SSB信号中的PSS或SSS的信号测量值大于第一测量预设值时，确定基站的下行信号质量为质量达标，否则确定基站的下行信号质量为质量不达标。
或者，若根据SSB信号能够检测出正确的小区ID，则确定基站的下行信号质量为质量达标；若根据SSB信号无法检测出正确的小区ID，则确定基站的下行信号质量为质量不达标。
在另一实施例中，当所述基站信号为CRS信号时，所述根据所述基站信号确定所述基站的下行信号质量，具体包括：
若CRS信号的信号测量值大于第二测量预设值，或，CRS信号的接收端SNR(Signal to Noise Ratio，信噪比)大于第三测量预设值，则确定所述基站的下行信号质量为质量达标；
其中，所述信号测量值包括：同步信号的RSRP或同步信号的RSRQ。
所述第二测量预设值为CRS信号的信号测量值的阈值。
所述第三测量预设值为CRS信号的接收端SNR的阈值。
在本实施例中，质量达标与上一实施例中表示的内容相同，即表示基站的下行信号质量满足质量要求。
具体地，根据CRS的信号测量值来获取下行信号质量，如果信号测量值大于等于第二测量预设值，则表示下行信号质量好，即质量达标；如果CRS的信号测量值小于第二测量预设值，表示下行信号质量差，即质量不达标。
或者，根据CRS的SNR来获取下行信号质量，如果SNR大于等于第三测量预设值，表示下行信号质量好；如果SNR小于第三测量预设值，表示下行信号质量差。
进一步地，在上述实施例的基础上，S103具体包括：
若所述基站的下行信号质量为质量达标，则确定所述终端能成功搜星，并记录当前的波束扫描区间、扫描频点和搜星时间。
根据所述波束扫描区间、所述扫描频点和所述搜星时间计算星历信息，并根据所述星历信息执行所述终端的网络接入流程。
举例来说，当基站的下行信号质量为质量达标，则确定终端能成功搜星，记录此时终端的扫描区间、扫描频点和搜星时间；然后根据波束扫描区间、扫描频点和搜星时间进行星历信息的计算，确定当前星再建立整个星座的星历情况，并进行正常的接入过程。为简便起见，该接入过程可以参照已建立的星历情况来进行。例如，因为终端已知自己在所对应波束的停留时间等信息，如果时间足够长，则终端在本波束开始发起接入，而如果发现时间过短，则终端等待进入下一波束再开始发起接入
进一步地，在上述实施例的基础上，所述终端的网络接入方法还包括：
若所述基站的下行信号质量为质量不达标，则更换为新的波束扫描区间和扫描频点，并在新的波束扫描区间的扫描频点，接收所述卫星发送或转发的基站信号。
具体地，根据下行信号质量是否达标来获得终端的搜星能力：如果下行信号质量为质量不达标，则表示终端的搜星能力弱，搜星不成功，无法 执行终端的网络接入流程，需重新在新的扫描频点接收卫星发送或转发的基站信号进行判断。
举例来说，当基站的下行信号质量为质量不达标，则确定终端的搜星能力较弱，无法成功搜星，需要更换为新的波束扫描区间和扫描频点，并在新的波束扫描区间的扫描频点，重新接收基站发送的信号，以最终确定基站的下行信号质量达标后，执行终端的网络接入流程。
进一步地，在上述方法实施例的基础上，S101具体包括：
根据所述卫星的运动方向确定波束扫描区间的扫描角范围，并在所述扫描角范围内的各波束扫描区间的一个或多个扫描频点搜索卫星信号；或，
根据预设扫描角确定目标扫描区间，并在所述目标扫描区间的各扫描频点搜索卫星信号，无需进行角度扫描；
其中，各扫描频点根据所述卫星的频率复用方式进行排序，并进行周期性轮。
具体地，为了保持卫星的搜索有效性，不在三维空间进行搜索，而是相对于卫星的运动方向，仅在卫星的运动轨迹所在的轨道面进行扫描；或者，在终端垂直方向(星下点)进行卫星搜索，等待卫星信号到达，无需进行角度扫描。
举例来说，若卫星在南北方向运动，则终端仅需要在南北方向所在的扫描区间范围进行搜索，而无须在球面上进行全方位的卫星搜索；若卫星在东西方向运动，则终端仅需要在东西方向所在的扫描区间范围进行搜索，而无须在球面上进行全方位的卫星搜索。
如前举例，虽然系统定义的终端通信仰角工作范围为±θ(度)，但是终端搜索时实际采用基于±φ(度)的范围来进行扫描区间设置，其中φ<θ且φ与卫星的波束扫描范围有关。
扫描区间nK+k(0≤n<L,1≤k≤K)：[-φ+2nφ/L，-φ+(n+1)*2φ/L]
扫描区间mK+k(L≤m<2L,1≤k≤K)：[φ-(m-L)*2φ/L，φ-(m-L+1)*2φ/L]
或者终端可以仅在特定角度搜索卫星，例如终端在垂直方向(星下点)进行卫星搜索，等待卫星信号到达，无需进行角度扫描。如前举例，类似设置θ＝0，只有1个固定的垂直接收信号方向，轮流变换工作频点，进行 该方向的下行信号接收。
本实施例通过判断卫星的运动轨迹和运动方向，在特定的扫描区间范围或者特定的扫描角进行搜索，无须在球面上进行全方位的卫星搜索，能够快速搜星，从而快速接入网络进行通信。
针对基于地面5G制式设计的卫星通信系统，在星历信息不准确或者没有星历信息的情况下，本实施例能够解决终端搜索卫星和接入网络的问题，如图2所示，本实施例具体包括如下步骤：
S201、确定终端的扫描信息。具体为终端在扫描角所覆盖的范围内，设置多个扫描区间，每个扫描区间设置多个扫描频点，按照顺序逐一进行扫描。
S202、获得下行接收信号质量。具体为针对某个波束扫描区间的某个频点，进行下行信号接收：
下行信号可以是SSB或者CRS，周期可以配置；
若是SSB，则进行PSS或SSS的信号检测，或者利用同步信号进行RSRP或者RSRQ测量；
若是CRS，则计算RSRP值、RSRQ值或者SNR值。
S203、获得终端搜星能力。具体为依据下行信号来判断是否搜星成功：
若采用SSB信号进行判断，则如果能够基于PSS和SSS以及PBCH(Physical Broadcast Channel，物理广播信道)检测出小区ID或者信号测量值RSRP/RSRQ大于第一测量预设值，表示终端能够搜星成功；否则，则表示终端搜星不成功；
若采用CRS信号进行判断，则如果RSRP/RSRQ大于第二测量预设值或SNR大于第三测量预设值，表示终端能够搜星成功；如果RSRP/RSRQ小于预定的第二测量预设值或SNR小于第三测量预设值，则表示终端搜星不成功。
S204、终端接入准备。依据步骤S203的结果来选择性执行S2041或S2042。
S2041、终端信息更新。具体为如果终端搜星不成功，则更换波束扫描区间进行扫描，转入步骤S202。
S2042、信息记录和终端接入。具体为如果终端能够搜星成功，则记 录搜星的时间、频点、终端扫描角等信息，并计算该卫星以及该星座其他卫星的星历信息，开启终端的接入过程。
需要说明的是，终端可以在本波束接入，也可以自下一个邻波束开始接入。
本实施例不依赖于星历信息来进行终端接入，既去掉了星历获取的代价，又能够使得用户方便地设置终端的使用状态，延长终端的生命周期。
图3示出了本实施例提供的一种终端的网络接入装置的结构示意图，所述装置包括：信号接收模块301、质量确定模块302和网络接入模块303，其中：
所述信号接收模块301被配置为确定波束扫描区间和扫描频点，接收卫星发送或转发的基站信号；
所述质量确定模块302被配置为根据所述基站信号确定所述基站的下行信号质量；
所述网络接入模块303被配置为若根据所述下行信号质量确定所述终端能成功搜星，则执行所述终端的网络接入流程；
其中，所述终端在通信扫描角覆盖的范围内，设置至少一个波束扫描区间，每个波束扫描区间设置至少一个扫描频点。
本实施例所述的终端的网络接入装置可以用于执行上述方法实施例，其原理和技术效果类似，此处不再赘述。
参照图4，所述终端，包括：处理器(processor)401、存储器(memory)402和总线403；
其中，
所述处理器401和存储器402通过所述总线403实现相互间的通信；
所述处理器401被配置为调用所述存储器402中的程序指令，以执行以下方法：
确定波束扫描区间和扫描频点，并接收卫星发送或转发的基站信号；
根据所述基站信号确定所述基站的下行信号质量；
若根据所述下行信号质量确定所述终端能成功搜星，则执行所述终端的网络接入流程；
其中，所述终端在通信扫描角覆盖的范围内，设置至少一个波束扫描 区间，每个波束扫描区间设置至少一个扫描频点。
本实施例通过卫星发送或转发的基站信号确定基站的下行信号质量，进一步根据下行信号质量确定终端能否成功搜星，不依赖星历信息，使得终端能够准确、快速地搜星并成功接入和通信，方便用户设置终端的使用状态，延长终端的生命周期。
进一步地，在上述实施例的基础上，当所述基站信号为同步信号块SSB信号时，所述处理器具体执行：
若所述SSB信号中的主同步信号PSS或辅同步信号SSS的信号测量值大于第一测量预设值，则确定所述基站的下行信号质量为质量达标；或，
若根据所述SSB信号检测出正确的小区ID，则确定所述基站的下行信号质量为质量达标；
其中，所述信号测量值包括：同步信号的参考信号接收功率RSRP或同步信号的参考信号接收质量RSRQ。
进一步地，在上述实施例的基础上，当所述基站信号为公共参考信号CRS信号时，所述处理器具体执行：
若CRS信号的信号测量值大于第二测量预设值，或，CRS信号的接收端信噪比SNR大于第三测量预设值，则确定所述基站的下行信号质量为质量达标；
其中，所述信号测量值包括：同步信号的RSRP或同步信号的RSRQ。
进一步地，在上述实施例的基础上，所述处理器具体执行：
若所述基站的下行信号质量为质量达标，则确定所述终端能成功搜星，并记录所述波束扫描区间、所述扫描频点和搜星时间；
根据所述波束扫描区间、所述扫描频点和所述搜星时间计算星历信息，并根据所述星历信息执行所述终端的网络接入流程。
进一步地，在上述实施例的基础上，所述处理器具体执行：
若所述基站的下行信号质量为质量不达标，则更换为新的波束扫描区间和扫描频点，并在新的波束扫描区间的扫描频点，所述卫星发送或转发的基站信号。
进一步地，在上述实施例的基础上，所述处理器具体执行：
根据所述卫星的运动方向确定波束扫描区间的扫描角范围，并在所述 扫描角范围内的各波束扫描区间的一个或多个扫描频点搜索卫星信号；或，
根据预设扫描角确定目标扫描区间，并在所述目标扫描区间的各扫描频点搜索卫星信号，无需进行角度扫描；
其中，各扫描频点根据所述卫星的频率复用方式进行排序，并进行周期性轮换。
本实施例所述的终端可以用于执行上述方法实施例，其原理和技术效果类似，此处不再赘述。
本实施例公开一种计算机程序产品，所述计算机程序产品包括存储在非暂态计算机可读存储介质上的计算机程序，所述计算机程序包括程序指令，当所述程序指令被计算机执行时，计算机能够执行以下方法：
确定波束扫描区间和扫描频点，并接收卫星发送或转发的基站信号；
根据所述基站信号确定所述基站的下行信号质量；
若根据所述下行信号质量确定所述终端能成功搜星，则执行所述终端的网络接入流程；
其中，所述终端在通信扫描角覆盖的范围内，设置至少一个波束扫描区间，每个波束扫描区间设置至少一个扫描频点。
本实施例提供一种非暂态计算机可读存储介质，所述非暂态计算机可读存储介质存储计算机指令，所述计算机指令使所述计算机执行以下方法：
确定波束扫描区间和扫描频点，并接收卫星发送或转发的基站信号；
根据所述基站信号确定所述基站的下行信号质量；
若根据所述下行信号质量确定所述终端能成功搜星，则执行所述终端的网络接入流程；
其中，所述终端在通信扫描角覆盖的范围内，设置至少一个波束扫描区间，每个波束扫描区间设置至少一个扫描频点。
以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个位置，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性的劳动的情况下，即可以理解并实施。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到各实施方式可通过软件和所需的通用硬件平台的方式来实现，当然也可以通过硬件来实现。由此，本申请的实施例提供一种软件产品，该计算机软件产品可以存储在计算机可读存储介质中，如ROM/RAM、磁碟、光盘等，包括若干指令用以使得一台计算机设备(例如，个人计算机，服务器，或者网络设备等)执行各个实施例或者实施例的某些部分所述的方法。
应说明的是：以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (14)

  1. 一种终端的网络接入方法，其特征在于，包括：
    终端确定波束扫描区间和扫描频点，并接收卫星发送或转发的基站信号；
    根据所述基站信号确定基站的下行信号质量；
    若根据所述下行信号质量确定所述终端能成功搜星，则执行所述终端的网络接入流程；
    其中，所述终端在通信扫描角覆盖的范围内，设置至少一个波束扫描区间，每个波束扫描区间设置至少一个扫描频点。
  2. 根据权利要求1所述的终端的网络接入方法，其特征在于，当所述基站信号为同步信号块SSB信号时，所述根据所述基站信号确定基站的下行信号质量，具体包括：
    若所述SSB信号中的主同步信号PSS或辅同步信号SSS的信号测量值大于第一测量预设值，则确定所述基站的下行信号质量为质量达标；或，
    若根据所述SSB信号检测出正确的小区ID，则确定所述基站的下行信号质量为质量达标；
    其中，所述信号测量值包括：同步信号的参考信号接收功率RSRP或同步信号的参考信号接收质量RSRQ。
  3. 根据权利要求1所述的终端的网络接入方法，其特征在于，当所述基站信号为公共参考信号CRS信号时，所述根据所述基站信号确定基站的下行信号质量，具体包括：
    若CRS信号的信号测量值大于第二测量预设值，或，CRS信号的接收端信噪比SNR大于第三测量预设值，则确定所述基站的下行信号质量为质量达标；
    其中，所述信号测量值包括：同步信号的RSRP或同步信号的RSRQ。
  4. 根据权利要求2或3所述的终端的网络接入方法，其特征在于，所述若根据所述下行信号质量确定所述终端能成功搜星，则执行所述终端的网络接入流程，具体包括：
    若所述基站的下行信号质量为质量达标，则确定所述终端能成功搜星，并记录所述波束扫描区间、所述扫描频点和搜星时间；
    根据所述波束扫描区间、所述扫描频点和所述搜星时间计算星历信息，并根据所述星历信息执行所述终端的网络接入流程。
  5. 根据权利要求2或3所述的终端的网络接入方法，其特征在于，所述终端的网络接入方法还包括：
    若所述基站的下行信号质量为质量不达标，则更换为新的波束扫描区间和扫描频点，并在新的波束扫描区间的扫描频点，接收所述卫星发送或转发的基站信号。
  6. 根据权利要求1-3任一项所述的终端的网络接入方法，其特征在于，所述终端确定波束扫描区间和扫描频点，并接收卫星发送或转发的基站信号，具体包括：
    根据所述卫星的运动方向确定波束扫描区间的扫描角范围，并在所述扫描角范围内的各波束扫描区间的一个或多个扫描频点搜索卫星信号；或，
    根据预设扫描角确定目标扫描区间，并在所述目标扫描区间的各扫描频点搜索卫星信号，无需进行角度扫描；
    其中，各扫描频点根据所述卫星的频率复用方式进行排序，并进行周期性轮换。
  7. 一种终端的网络接入装置，其特征在于，包括：
    信号接收模块，配置为确定波束扫描区间和扫描频点，并接收卫星发送或转发的基站信号；
    质量确定模块，配置为根据所述基站信号确定基站的下行信号质量；
    网络接入模块，配置为若根据所述下行信号质量确定所述终端能成功搜星，则执行所述终端的网络接入流程；
    其中，所述终端在通信扫描角覆盖的范围内，设置至少一个波束扫描区间，每个波束扫描区间设置至少一个扫描频点。
  8. 一种终端，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，其特征在于，所述处理器执行所述程序时执行以下步骤：
    确定波束扫描区间和扫描频点，并接收卫星发送或转发的基站信号；
    根据所述基站信号确定基站的下行信号质量；
    若根据所述下行信号质量确定所述终端能成功搜星，则执行所述终端 的网络接入流程；
    其中，所述终端在通信扫描角覆盖的范围内，设置至少一个波束扫描区间，每个波束扫描区间设置至少一个扫描频点。
  9. 根据权利要求8所述的终端，其特征在于，当所述基站信号为同步信号块SSB信号时，所述处理器具体执行：
    若所述SSB信号中的主同步信号PSS或辅同步信号SSS的信号测量值大于第一测量预设值，则确定所述基站的下行信号质量为质量达标；或，
    若根据所述SSB信号检测出正确的小区ID，则确定所述基站的下行信号质量为质量达标；
    其中，所述信号测量值包括：同步信号的参考信号接收功率RSRP或同步信号的参考信号接收质量RSRQ。
  10. 根据权利要求8所述的终端，其特征在于，当所述基站信号为公共参考信号CRS信号时，所述处理器具体执行：
    若CRS信号的信号测量值大于第二测量预设值，或，CRS信号的接收端信噪比SNR大于第三测量预设值，则确定所述基站的下行信号质量为质量达标；
    其中，所述信号测量值包括：同步信号的RSRP或同步信号的RSRQ。
  11. 根据权利要求9或10所述的终端，其特征在于，所述处理器具体执行：
    若所述基站的下行信号质量为质量达标，则确定所述终端能成功搜星，并记录所述波束扫描区间、所述扫描频点和搜星时间；
    根据所述波束扫描区间、所述扫描频点和所述搜星时间计算星历信息，并根据所述星历信息执行所述终端的网络接入流程。
  12. 根据权利要求9或10所述的终端，其特征在于，所述处理器具体执行：
    若所述基站的下行信号质量为质量不达标，则更换为新的波束扫描区间和扫描频点，并在新的波束扫描区间的扫描频点，接收所述卫星发送或转发的基站信号。
  13. 根据权利要求8-10任一项所述的终端，其特征在于，所述处理器具体执行：
    根据所述卫星的运动方向确定波束扫描区间的扫描角范围，并在所述扫描角范围内的各波束扫描区间的一个或多个扫描频点搜索卫星信号；或，
    根据预设扫描角确定目标扫描区间，并在所述目标扫描区间的各扫描频点搜索卫星信号，无需进行角度扫描；
    其中，各扫描频点根据所述卫星的频率复用方式进行排序，并进行周期性轮换。
  14. 一种非暂态计算机可读存储介质，其上存储有计算机程序，其特征在于，该计算机程序被处理器执行时实现如权利要求1-6任一所述的终端的网络接入方法。
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