WO2024031947A1 - Procédé de connexion de station radio, système de positionnement rtk et support de stockage lisible par ordinateur - Google Patents

Procédé de connexion de station radio, système de positionnement rtk et support de stockage lisible par ordinateur Download PDF

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Publication number
WO2024031947A1
WO2024031947A1 PCT/CN2023/075617 CN2023075617W WO2024031947A1 WO 2024031947 A1 WO2024031947 A1 WO 2024031947A1 CN 2023075617 W CN2023075617 W CN 2023075617W WO 2024031947 A1 WO2024031947 A1 WO 2024031947A1
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WO
WIPO (PCT)
Prior art keywords
information
working
channel
base station
mobile terminal
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Application number
PCT/CN2023/075617
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English (en)
Chinese (zh)
Inventor
钱跃峰
孙强
王波
吴迪
秦硕
Original Assignee
丰疆智能(深圳)有限公司
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Publication of WO2024031947A1 publication Critical patent/WO2024031947A1/fr

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Classifications

    • 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
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • 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

Definitions

  • This application relates to the field of RTK positioning technology, and specifically to a wireless station connection method, an RTK positioning system and a computer-readable storage medium.
  • RTK Real-time kinematic, real-time dynamic
  • the process of setting up the base station to connect with the mobile terminal is relatively cumbersome, resulting in a long time for the connection between both ends.
  • the channel selected by the user may be occupied by multiple radio stations at the same time, which will interfere with the data transmission between the base station and the mobile terminal, thus affecting the accuracy of the positioning function.
  • this application provides a wireless station connection method, an RTK positioning system and a computer-readable storage medium, which can simplify the process of setting up a base station and a mobile terminal for wireless communication connection, and reduce the cost of other wireless station equipment after the base station and the mobile terminal are connected. the interference caused.
  • the technical solution for this application is as follows:
  • this application provides a wireless station connection method, which is applied to the base station of the RTK positioning system.
  • the base station can communicate wirelessly with the mobile terminal.
  • the method includes:
  • the target working channel is used for wireless communication with the mobile terminal;
  • the working information includes information of the target working channel
  • the working information is broadcast through preset broadcast rules and at least one public channel, and the working information is used to instruct the mobile terminal to establish a wireless communication connection with the base station through the target working channel.
  • broadcasting the work information to the mobile terminal through preset broadcast rules and at least one public channel includes:
  • the working information is broadcast over the currently polled public channel.
  • broadcasting the work information through preset broadcast rules and at least one public channel includes:
  • the working information is broadcast over the target public channel.
  • the method further includes:
  • the working information is broadcast through the polled public channel, and the positioning reference data is transmitted to the connected mobile terminal through the polled target working channel.
  • the method further includes:
  • Receive the scan command rescan the signal field strength of each working channel in the working channel set, update the target working channel with the smallest signal field strength, and execute the steps of generating working information according to the updated target working channel and thereafter A step of.
  • the preset broadcast rules include polling at least one of the public channels and broadcasting the work information according to the first time;
  • the mobile terminal is configured to poll at least one of the public channels according to a second time and receive the work information
  • the second time is greater than the first time, or the second time is less than the first time.
  • this application also provides a wireless station connection method, which is applied to the mobile terminal of the RTK positioning system.
  • the mobile terminal can communicate wirelessly with the base station.
  • the method includes:
  • the working information also includes frequency point information and the base station number of the base station;
  • the method of using the working information to compare with preset information, and using the working information to establish wireless communication with the base station after passing the comparison includes:
  • this application provides an RTK positioning system, including a base station and a mobile terminal;
  • the base station selects the target working channel with the smallest current signal field strength from the pre-stored working channels.
  • the target working channel is used for wireless communication with the mobile terminal; generates working information and passes preset broadcast rules and At least one common channel broadcasts the working information; wherein the working information includes information of the target working channel;
  • the mobile terminal After being started, the mobile terminal obtains the working information broadcast from the base station from the public channel; uses the working information to compare with the preset information, and after passing the comparison, uses the working information to compare with the base station establish wireless communications;
  • the base station acquires positioning reference data, and after establishing wireless communication with the mobile terminal, transmits the positioning reference data to the mobile terminal through the target working channel.
  • the present application provides a computer-readable storage medium.
  • the computer storage medium stores a computer program.
  • the processor is caused to execute the above-mentioned steps. wireless station connection method.
  • all working channels are first scanned for signal field strength to find the target working channel with the smallest signal field strength, that is, first Find out the target working channel that is less occupied by other radio station equipment among all working channels, and use it as a channel for subsequent wireless communication with the mobile terminal.
  • This can reduce the interference caused by other radio station equipment in wireless communication, thereby ensuring that the base station and the mobile terminal The reliability of wireless communication between them can thereby improve the positioning accuracy of the RTK positioning system.
  • the base station broadcasts its own working information through the public channel, and the mobile terminal that receives the working information can directly establish a wireless communication connection with the base station based on the working information of the base station.
  • the operation is simpler, the connection speed between the base station and the mobile terminal is faster, and the RTK positioning function can be quickly entered.
  • FIG. 1 is a schematic structural diagram of an RTK positioning system provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of wireless communication of an RTK positioning system provided by an embodiment of the present application.
  • Figure 3 is a schematic flowchart of a wireless station connection method provided by an embodiment of the present application.
  • Figure 4 is a comparison diagram of public channel usage time provided by an embodiment of the present application.
  • Figure 5 is a schematic flowchart of the first method of broadcasting work information provided by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of the second method of broadcasting work information provided by an embodiment of the present application.
  • FIG. 7 is a schematic flowchart of a wireless station connection method provided by an embodiment of the present application.
  • Figure 8 is a schematic flowchart of a wireless station connection method provided by an embodiment of the present application.
  • Figure 9 is a schematic flowchart of a wireless station connection method provided by an embodiment of the present application.
  • Figure 10 is a schematic flowchart of a work information comparison method provided by an embodiment of the present application.
  • FIG. 1 illustrates a schematic structural diagram of an RTK positioning system provided by an embodiment of the present application.
  • the RTK positioning system 100 includes: a base station 110, a mobile terminal 120, and a mobile device 130 equipped with the mobile terminal 120. in:
  • the base station 110 includes a satellite positioning module and a radio station module.
  • the satellite positioning module receives satellite positioning data, and the radio station module can communicate with the mobile terminal 120 .
  • the mobile terminal 120 also includes a satellite positioning module and a radio module.
  • the mobile device 130 includes automobiles, aircraft, agricultural machinery and other machines that require precise positioning. This is not limited here. It should be noted that the mobile terminal 120 is mounted on the mobile device 130 and can be detached to facilitate the user to move it to the mobile device 130. on the required mobile equipment 130.
  • the base station 110 serves as a positioning reference in the RTK positioning system 100, providing the mobile terminal 120 with the reference data required for positioning, so as to reduce the positioning error of the mobile terminal 120 and improve the positioning accuracy. That is, the physical position of the base station 110 is fixed. During the positioning process, the base station 110 can be used to obtain satellite positioning data. By comparing the satellite positioning data with the coordinates of the fixed physical position, reference data is obtained. The reference data includes fixed physical positions. Offset information between position and satellite positioning data. After obtaining the reference data, the base station 110 transmits the reference data to the mobile terminal 120 through radio communication. The mobile terminal 120 corrects the positioning based on the reference data and the satellite positioning data it receives, thereby obtaining a higher-precision current positioning data. Positioning information.
  • FIG. 1 is a schematic diagram of wireless communication of an RTK positioning system provided by an embodiment of the present application, in which:
  • the base station 110 After being started, the base station 110 first selects the target working channel with the smallest current signal field strength from the pre-stored working channel set.
  • the target working channel is used for wireless communication with the mobile terminal 120 .
  • the working channel set is only a part of the communication channels available to the base station 110.
  • the available communication channels can be divided into public channels and working channels.
  • the broadcast of available information on the public channels does not participate in the reference data transmission service of the working channels. Therefore, It can avoid mutual interference with the working channel.
  • the working channel is used for wireless communication with the mobile terminal 120 and for reference data transmission.
  • the signal field strength can reflect the occupancy rate of the corresponding channel, that is, when more radio station equipment uses the channel for communication, the corresponding signal field strength will be greater.
  • the base station 110 scans all the working channels in the working channel set, and selects the target working channel with the smallest signal field strength as the communication channel for subsequent reference data transmission services with the mobile terminal 120, which can effectively reduce other errors when transmitting the reference data.
  • the interference caused by radio station equipment ensures the reliability of the reference data transmission service and the positioning accuracy of the RTK positioning system.
  • the base station 110 After screening out the target working channel, the base station 110 generates working information and broadcasts the working information through preset broadcast rules and at least one public channel; wherein the working information includes information about the target working channel.
  • the preset order and predetermined order can be used. It is assumed that the broadcast time polls multiple public channels, and the work information of the preset broadcast time is broadcast through each public channel.
  • public channel 1 public channel 2 and public channel 3 are pre-stored.
  • the base station 110 can first broadcast the working information of the preset broadcast time through the public channel 1, and then perform the preset broadcast time through the public channel 2.
  • the working information is broadcast, then to public channel 3, and then returned to public channel 1, and so on, polling each public channel for broadcasting of working information.
  • the mobile terminal 120 After being started, the mobile terminal 120 obtains the working information broadcast from the base station from the public channel.
  • the mobile terminal 120 can try to obtain the work information broadcast by the base station 110 from each public channel in a polling manner according to the preset polling time. information, thereby improving the success rate and efficiency of obtaining work information.
  • the mobile terminal 120 can first try to receive working information at a preset polling time on public channel 1, and then perform preset polling on public channel 2. Attempt to receive the work information at the time, then public channel 3, and then return to public channel 1, and so on, try to receive the work information broadcast by the base station 110 on each public channel, so as to improve the success rate and efficiency of obtaining the work information. .
  • the above-mentioned preset polling time can be greater than the preset broadcast time, that is, to ensure that the time for the mobile terminal 120 to try to receive the work information on the public channel is greater than the time for the base station 110 to broadcast the work information on the public channel, thereby ensuring that the mobile terminal 120 can receive the work information on the public channel.
  • the process of trying to receive work information on the public channel can cover the process of broadcasting work information by the base station 110 to further improve the success rate and efficiency of the mobile terminal 120 in obtaining the work information.
  • the mobile terminal 120 After receiving the working information, the mobile terminal 120 uses the working information to compare with the preset information, and after passing the comparison, uses the working information to establish wireless communication with the base station.
  • the public channel may be occupied by other radio stations, that is, in the same usage scenario, other base stations may use the public channel to broadcast information, and the mobile terminal 120 may receive working information sent by other base stations.
  • the mobile terminal 120 verifies the received working information, that is, compares it with the preset information, and after passing the comparison, establishes wireless communication with the corresponding base station 110 through the working information.
  • the working information may also include working parameters such as the service number, communication protocol, baud rate, and frequency of the target working channel of the base station 110 .
  • the preset information may include a list of trusted service numbers, a list of communication protocols, a list of baud rates, a list of working channels, a list of frequencies, etc.
  • the mobile terminal 120 can establish wireless communication with the corresponding base station 110 through the working information only after all the above information is compared and passed.
  • the process of establishing wireless communication between the mobile terminal 120 and the base station 110 can be carried out in a handshake manner. For example, through the target working channel, the mobile terminal 120 can initiate a handshake data packet to the base station 110, and the base station 110 receives the handshake data packet through the target working channel and parses it. After success, a confirmation data packet is returned. After receiving and parsing the confirmation data packet, the mobile terminal 120 sends the confirmation data packet back to the base station 110. Finally, the establishment of wireless communication between the mobile terminal 120 and the base station 110 on the target working channel is completed.
  • the base station 110 obtains the positioning reference data, and after establishing wireless communication with the mobile terminal 120, transmits the positioning reference data to the mobile terminal through the target working channel.
  • the base station 110 receives satellite positioning data through the satellite positioning module at preset time intervals, After receiving the positioning data, it compares it with the preset fixed coordinates to obtain the positioning reference data, and then transmits the positioning reference data to the mobile terminal 120 through the target working channel.
  • the mobile terminal 120 receives the latest positioning reference data sent by the base station 110 in real time through the target working channel, and estimates the precise positioning based on the positioning reference data and the satellite positioning data received through the satellite positioning module.
  • FIG. 1 and FIG. 2 exemplarily shows a schematic flow chart of a radio station connection method provided by an embodiment of the present application.
  • the radio station connection method is applied to the base station 110 of the RTK positioning system 100, and specifically includes the following steps:
  • Step S301 Select the target working channel with the smallest current signal field strength from the pre-stored working channel set.
  • the target working channel is used for wireless communication with the mobile terminal.
  • Step S302 Generate working information, where the working information includes information about the target working channel.
  • Step S303 Broadcast working information through preset broadcast rules and at least one public channel.
  • the working information is used to instruct the mobile terminal to establish a wireless communication connection with the base station through the target working channel.
  • the above-mentioned preset broadcast rules include polling at least one public channel and broadcasting work information according to the first time.
  • the mobile terminal 120 is configured to poll at least one common channel and receive working information according to a second time, where the second time is greater than the first time, or the second time is less than the first time. That is, under the same public channel, the time when the base station 110 uses and broadcasts the working information through the public channel is the first time, and the time when the mobile terminal 120 uses and attempts to receive the working information from the public channel is the second time.
  • the second time Settings that are different from the first time can effectively increase the probability that the base station 110 and the mobile terminal 120 use the same public channel, thereby improving the success rate of establishing a wireless connection.
  • the second time is set to be greater than the first time so that the process of the mobile terminal 120 trying to receive the work information on the public channel can cover the process of the base station 110 broadcasting the work information.
  • the second time is set to be smaller than the first time so that the broadcast process of the base station 110 can cover the reception process of the mobile terminal 120 .
  • a comparison chart of public channel usage time is provided in an embodiment of the present application.
  • the base station 110 and the mobile terminal 120 are on the same time axis.
  • the second time can be three times or more of the first time, thereby ensuring that the base station 110 and the mobile terminal 120 use the same public channel within a certain period of time, thereby ensuring that the mobile terminal 120 can successfully obtain the broadcast of the base station 110 job information.
  • the second time is greater than the first time.
  • the first time may be three times or more of the second time, thereby ensuring that the base station 110 and the mobile terminal 120 use the same common channel within a certain period of time.
  • FIG. 5 it is a schematic flow chart of the first method of broadcasting work information provided by the embodiment of the present application, which specifically includes the following steps:
  • S501 Poll at least one public channel in a preset order.
  • S502 Broadcast the work information through the currently polled public channel.
  • the base station 110 in order to reduce the long-term occupation of the same public channel and reduce the process of broadcasting work information interfered by other radio station equipment on the same public channel, the base station 110 can poll multiple public channels in a preset order, taking turns. Use multiple public channels to broadcast work information. Similarly, the mobile terminal 120 also polls multiple public channels in a preset order and attempts to receive the work information broadcast by the base station 110 .
  • FIG. 6 it is a schematic flow chart of the second method of broadcasting work information provided by the embodiment of the present application, which specifically includes the following steps:
  • S601 Select the target public channel with the smallest signal field strength from at least one public channel.
  • S602 Broadcast the work information through the target public channel.
  • the base station 110 can also select a target public channel with the smallest signal field strength from multiple public channels, that is, the target public channel is currently used by a smaller number of other radio station equipment. Using the target public channel to broadcast work information can improve the success rate of the mobile terminal 120 in receiving complete work information.
  • FIG. 7 exemplarily shows a schematic flowchart of a radio station connection method provided by an embodiment of the present application.
  • the radio station connection method is applied to the base station 110 of the RTK positioning system 100, and specifically includes the following steps:
  • Step S701 Select the target working channel with the smallest current signal field strength from the pre-stored working channel set.
  • the target working channel is used for wireless communication with the mobile terminal.
  • Step S702 Generate working information, where the working information includes information about the target working channel.
  • Step S703 Broadcast working information through preset broadcast rules and at least one public channel.
  • the working information is used to instruct the mobile terminal to establish a wireless communication connection with the base station through the target working channel.
  • Step S704 Obtain positioning reference data.
  • Step S705 After establishing a radio station connection with at least one mobile terminal, poll the common channel and the target working channel according to a preset period.
  • Step S706 Broadcast the working information through the polled public channel, and transmit the positioning reference data to the connected mobile terminal through the polled target working channel.
  • the base station 110 can establish wireless communication with multiple mobile terminals 120 to transmit positioning reference data. Therefore, after the base station 110 establishes wireless communication with the current mobile terminal 120, it will continue to broadcast work information, so that Other mobile terminals 120 can establish wireless communication with the base station 110 based on the broadcast work information, and obtain positioning reference data for precise positioning.
  • the base station 110 switches between multiple public channels and the target working channel.
  • the switching sequence may be: public channel 1, target working channel, public channel 2, target working channel, Public channel 3, target working channel, public channel 1, target working channel..., and so on.
  • the base station polls the public channel, it broadcasts the working information, and when it polls the target working channel, it broadcasts the working information.
  • the latest positioning reference data is transmitted to the mobile terminal 120.
  • the usage time of the public channel and the target working channel is not limited here and can be consistent or inconsistent.
  • Figure 8 exemplarily shows a flow chart of a radio station connection method provided by an embodiment of the present application.
  • the radio station connection method is applied to the base station 110 of the RTK positioning system 100, and specifically includes the following steps:
  • Step S801 Select the target working channel with the smallest current signal field strength from the pre-stored working channel set.
  • the target working channel is used for wireless communication with the mobile terminal.
  • Step S802 Generate working information, where the working information includes information about the target working channel.
  • Step S803 Broadcast working information through preset broadcast rules and at least one public channel.
  • the working information is used to instruct the mobile terminal to establish a wireless communication connection with the base station through the target working channel.
  • Step S804 Regularly scan the signal field strength of each working channel in the working channel set, update the target working channel with the smallest signal field strength, and perform the process of generating working information based on the updated target working channel. Steps and subsequent steps; or, receive the scan command, re-scan the signal field strength of each working channel in the working channel set, update the target working channel with the smallest signal field strength, and execute the step of generating working information based on the updated target working channel. and subsequent steps.
  • the current target working channel may be used by other radio station equipment, so it may not be the best working channel at the moment. That is, the target working channel can be updated regularly to ensure positioning.
  • Baseline data transfer reliability That is, in the process of transmitting positioning reference data to the mobile terminal 120 using the current target working channel, the base station 110 can also periodically scan the signal field strengths of other working channels to detect the working channel with the smallest signal field strength to update the target working channel. .
  • the base station 110 can be instructed to re-scan the working channels, re-find the working channel with the smallest signal field strength to update the target working channel, and then perform subsequent steps such as generating working information and broadcasting working information again to update the target.
  • the working channel transmits the positioning reference data to the mobile terminal 120, thereby achieving the effect of dynamically reducing the interference of transmitting the positioning reference data.
  • a virtual button is provided on the interactive interface of the base station 110, and the user can trigger the sending of the above instructions by clicking the virtual button, or it can also be a physical button on the base station 110, etc.
  • the mobile terminal 120 can also determine whether the current target working channel is subject to greater interference by determining the reception status of the positioning reference data. For example, after the mobile terminal 120 determines the target working channel and receives the positioning reference data from the base station 110, the time interval between two adjacent positioning reference data can be recorded. When the time interval is greater than a preset value, it means that the target working channel is affected by If the interference is large, a prompt can be sent to the user, allowing the user to operate the base station 110 to re-scan the working channel. Alternatively, when the mobile terminal 120 does not receive positioning reference data from the target working channel for a long time, it can automatically reuse the public channel to receive new working information broadcast by the base station 120, thereby receiving the positioning reference data through the new target working channel.
  • Figure 9 exemplarily shows a flow chart of a radio station connection method provided by an embodiment of the present application.
  • the radio station connection method is applied to the mobile terminal 120 of the RTK positioning system 100, and specifically includes the following steps:
  • Step S901 Obtain the working information broadcast from the base station from the public channel.
  • the working information includes the target working channel for establishing wireless communication with the base station.
  • Step S902 Compare the work information with the preset information, and use the work information after the comparison is passed. Establish wireless communication with the base station.
  • Step S903 Receive positioning reference data transmitted by the base station through wireless communication.
  • the working information may also include frequency point information and the base station number of the base station.
  • FIG 10 it is a schematic flow chart of a working information comparison method provided by an embodiment of the present application, which specifically includes the following steps:
  • Step S1001 Compare the base station number with the preset number.
  • the mobile terminal 120 after obtaining the working information from the public channel, the mobile terminal 120 first extracts the base station number in the working information, and compares the base station number with the preset number to determine whether the base station 110 corresponding to the working information is Not a pre-stored trusted base station.
  • the preset number is input by the user through the interactive interface of the mobile terminal 120 after starting the mobile terminal 120 .
  • the mobile terminal 120 can abandon the working information and obtain the working information from the public channel again.
  • Step S1002 When the base station number is consistent with the preset number, compare the frequency point information with the frequency point list of the target working channel.
  • the mobile terminal 120 when the base station number is consistent with the preset number, the mobile terminal 120 then compares the frequency point information with the frequency point list of the target working channel to verify whether the frequency point information is on the frequency point list. When the frequency point information is not on the frequency point list, the mobile terminal 120 can abandon the working information and obtain the working information from the public channel again. Alternatively, when the mobile terminal 120 cannot find the frequency list of the target working channel, it also abandons the working information and re-obtains the working information from the public channel.
  • Step S1003 If frequency point information exists in the frequency point list, the comparison passes.
  • Step S1004 Establish wireless communication with the base station using the target working channel and frequency point information.
  • the mobile terminal 110 can establish wireless communication with the base station through the target working channel and frequency point information and receive positioning reference data.

Abstract

La présente demande concerne un procédé de connexion de station radio, un système de positionnement RTK et un support de stockage lisible par ordinateur. Le procédé de connexion de station radio consiste à : sélectionner, à partir d'un ensemble de canaux de travail pré-stocké, un canal de travail cible ayant l'intensité de champ de signal de courant minimale, le canal de travail cible étant utilisé pour effectuer une communication radio avec un terminal mobile ; générer des informations de travail, les informations de travail comprenant des informations du canal de travail cible ; et diffuser les informations de travail au moyen d'une règle de diffusion prédéfinie et d'au moins un canal commun, les informations de travail étant utilisées pour ordonner au terminal mobile d'établir une connexion de communication radio avec une station de base au moyen du canal de travail cible. Selon le procédé de connexion de station radio de la présente demande, une interférence provoquée par d'autres dispositifs de station radio dans la communication radio peut être réduite, de telle sorte que la fiabilité de la communication radio entre la station de base et le terminal mobile est assurée, ce qui permet d'améliorer la précision de positionnement du système de positionnement RTK, et de simplifier un mode de réglage de connexion des deux extrémités.
PCT/CN2023/075617 2022-08-09 2023-02-13 Procédé de connexion de station radio, système de positionnement rtk et support de stockage lisible par ordinateur WO2024031947A1 (fr)

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CN202210958438.5 2022-08-09
CN202210958438.5A CN115996446A (zh) 2022-08-09 2022-08-09 无线电台连接方法、rtk定位系统及计算机可读存储介质

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WO2020233157A1 (fr) * 2019-05-23 2020-11-26 杭州海康威视数字技术股份有限公司 Procédé de commutation de canal sans fil, système, point d'accès, et poste de travail

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US6131038A (en) * 1997-05-14 2000-10-10 Oki Electric Co., Ltd. Method of and apparatus for selecting a channel in a base station by determining the field intensity of radiowaves received
CN101867390A (zh) * 2010-05-04 2010-10-20 中兴通讯股份有限公司 一种移动通讯终端抗干扰的方法及系统
EP3503422A1 (fr) * 2017-12-22 2019-06-26 Deutsche Telekom AG Système de station de base pour gérer les communications radio d'une entité utilisateur
CN111465873A (zh) * 2019-01-16 2020-07-28 深圳市大疆创新科技有限公司 一种数据发送方法和电子设备
WO2020233157A1 (fr) * 2019-05-23 2020-11-26 杭州海康威视数字技术股份有限公司 Procédé de commutation de canal sans fil, système, point d'accès, et poste de travail

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