WO2020133289A1 - Appareil et procédé de transfert intercellulaire de liaison de communication, terminal, et support d'informations lisible par ordinateur - Google Patents

Appareil et procédé de transfert intercellulaire de liaison de communication, terminal, et support d'informations lisible par ordinateur Download PDF

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Publication number
WO2020133289A1
WO2020133289A1 PCT/CN2018/125105 CN2018125105W WO2020133289A1 WO 2020133289 A1 WO2020133289 A1 WO 2020133289A1 CN 2018125105 W CN2018125105 W CN 2018125105W WO 2020133289 A1 WO2020133289 A1 WO 2020133289A1
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WO
WIPO (PCT)
Prior art keywords
communication link
communication
network signal
signal strength
signal
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Application number
PCT/CN2018/125105
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English (en)
Chinese (zh)
Inventor
熊友军
冼建勇
黄创奇
Original Assignee
深圳市优必选科技有限公司
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Publication of WO2020133289A1 publication Critical patent/WO2020133289A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H04W36/0088—Scheduling hand-off measurements
    • 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
    • H04B17/318—Received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections

Definitions

  • the present invention relates to the field of communication technology, and in particular, to a communication link switching method, device, terminal, and computer-readable storage medium.
  • Inspection robots are intelligent robots that can independently set patrol schemes according to the actual use environment.
  • the inspection robot When the inspection robot is running outdoors, it needs to upload the captured multi-channel audio and video data, robot status data, etc. in real time, and also needs to receive control commands from the control end.
  • Cruise robots usually use wireless communication to transmit data. The requirements for network bandwidth and network delay are high.
  • Embodiments of the present invention provide a method, an apparatus, a terminal, and a computer-readable storage medium for switching a communication link, which can improve the stability of a communication system and improve the robustness of a terminal device in a communication process.
  • a communication link switching method is applied to a terminal device.
  • the terminal device includes at least three communication modules.
  • the communication module is used to form a communication link after establishing a communication connection with a communication transmission platform.
  • the communication link includes The first communication link, the second communication link, and the third communication link are used to transmit the first network signal, the second network signal, and the third network signal, respectively; the method includes:
  • the first communication link and/or the second communication link are selected to transmit data according to a preset transmission strategy ;
  • the third communication link is selected to transmit data.
  • the data transmitted by the terminal device includes data of the first type and data of the second type; the signal strength of the first network signal and/or the signal of the second network signal When the strength is greater than or equal to the first threshold, selecting the first communication link and/or the second communication link to transmit data according to a preset transmission strategy includes:
  • the first type of data is selected for transmission through the first communication link
  • the second type of data is selected for transmission through the second communication link Road transmission
  • the first type data and the second type data are selected to pass through the first communication link Transfer
  • the first type data and the second type data are selected to pass through the second communication link For transmission.
  • the first type of data includes at least one of a control instruction, a request instruction, and an intercom instruction.
  • the second type of data includes at least one of picture data, audio data, and video data.
  • the communication module includes a 4G communication module
  • the communication transmission platform includes a mobile base station
  • the 4G communication module establishes a communication connection with the mobile base station for transmitting 4G network signals.
  • the communication module further includes a WiFi communication module
  • the communication transmission platform further includes a wireless access point
  • the WiFi communication module establishes a communication connection with the wireless access point , Used to transmit WiFi network signals.
  • the communication module further includes a COFDM communication module
  • the communication transmission platform further includes a COFDM device
  • the COFDM communication module establishes a communication connection with the COFDM device for transmitting COFDM network signals.
  • a communication link switching device including:
  • the signal strength detection module is used to detect the signal strength of the first network signal and the signal strength of the second network signal in real time;
  • the first selection module is configured to select the first communication link and/or the second communication link according to a preset transmission strategy when the signal strength of the first network signal and/or the signal strength of the second network signal is greater than or equal to a first threshold Communication link transmits data;
  • the second selection module is configured to select a third communication link to transmit data when the signal strength of the first network signal and the signal strength of the second network signal are less than the second threshold.
  • a terminal includes a memory and a processor.
  • a computer program is stored in the memory.
  • the processor is caused to perform the steps of the foregoing method.
  • a computer-readable storage medium having stored thereon a computer program, which when executed by a processor implements the steps of the above method.
  • the above communication link switching method, device, terminal and computer readable storage medium detect the signal strength of the first network signal and the signal strength of the second network signal in real time when the signal strength of the first network signal and /Or the signal strength of the second network signal is greater than or equal to the first threshold, the first communication link and/or the second communication link are selected to transmit data according to a preset transmission strategy, when the signal strength of the first network signal and the first When the signal strength of the second network signal is less than the second threshold, the third communication link is selected to transmit data.
  • the communication link can be automatically switched according to the signal strength of different network signals, the stability of the communication system is improved, and the robustness of the terminal device in the communication process is improved.
  • FIG. 1 is a schematic diagram of an application environment of a communication link switching method in an embodiment
  • FIG. 2 is a schematic diagram of an internal structure of a terminal in an embodiment
  • FIG. 3 is a flowchart of a method for switching communication links in an embodiment
  • FIG. 5 is a structural block diagram of an apparatus for switching communication links in an embodiment.
  • FIG. 1 is a schematic diagram of an application environment of a communication link switching method in an embodiment.
  • the application environment includes a terminal device 110 and a communication transmission platform 120, and the terminal device 110 and the communication transmission platform 120 are connected through a network for communication .
  • the terminal device 110 may be a patrol robot or other intelligent robots that provide special services, such as underwater robots, aerial robots, military robots, and agricultural robots. It can be understood that the terminal device 110 may also be other devices with communication functions, such as mobile phones, tablet computers, personal digital assistants, or wearable devices.
  • the communication transmission platform 120 may be a mobile base station, a wireless access point (WirelessAccessPoint, AP), or a COFDM (Coded Orthogonal Frequency Division Multiplexing, Code Orthogonal Frequency Division Multiplexing) device.
  • a wireless access point WirelessAccessPoint, AP
  • COFDM Coded Orthogonal Frequency Division Multiplexing, Code Orthogonal Frequency Division Multiplexing
  • FIG. 2 is a schematic diagram of the internal structure of the terminal in an embodiment.
  • the terminal includes a processor, memory, and communication module connected by a system bus.
  • the processor is used to provide computing and control capabilities to support the operation of the entire terminal.
  • the memory is used to store data, programs, and the like. At least one computer program is stored on the memory, and the computer program can be executed by the processor to implement the method for switching the communication link of the terminal provided in the embodiments of the present application.
  • the memory may include non-volatile storage media and internal memory.
  • the non-volatile storage medium stores an operating system and computer programs.
  • the computer program can be executed by the processor for implementing a method for switching communication links provided by the following embodiments.
  • the internal memory provides a cached operating environment for the operating system computer programs in the non-volatile storage medium.
  • the communication module may be a 4G communication module, a WiFi communication module, or a COFDM communication module, etc., for communicating with an external communication transmission platform.
  • the terminal may be an inspection robot.
  • FIG. 2 is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the terminal to which the solution of the present application is applied.
  • the specific terminal may include a ratio More or fewer components are shown in the figure, or some components are combined, or have different component arrangements.
  • FIG. 3 is a flowchart of a communication link switching method in an embodiment.
  • the communication link switching method in this embodiment is described by taking the terminal device in FIG. 1 as an example.
  • the terminal device includes at least three communication modules, and the communication module is used to establish a communication connection with a communication transmission platform Forming a communication link, the communication link includes a first communication link, a second communication link, and a third communication link, which are used to transmit the first network signal, the second network signal, and the third network signal, respectively.
  • the communication link switching method can also be applied to a control platform that performs communication connection with a terminal device, which is not limited in this embodiment.
  • the switching method of the communication link can improve the stability of the communication system and improve the robustness of the terminal device in the communication process.
  • the communication link switching method includes the following steps 302 to 306:
  • Step 302 Detect the signal strength of the first network signal and the signal strength of the second network signal in real time.
  • the terminal device can establish multiple communication links with the communication transmission platform through multiple communication modules, and can be used to transmit multiple network signals.
  • a communication link with a better communication state can be selected by comparing the quality of the network signal.
  • the first network signal may be a 4G network signal
  • the second network signal may be a WiFi network signal.
  • the terminal device forms a communication link after establishing a communication connection with the communication transmission platform through each communication module, and the terminal can obtain the signal strength of the network signal transmitted by each communication link in real time.
  • the RSSI Receiveived Signal Strength Indication
  • the signal strength of different wireless network signals can be -85dBm, -95dBm, -115dBm, etc. .
  • the terminal device may also obtain the signal transmission rate of the communication link and determine the link quality of the communication link according to the signal transmission rate to select a communication link with better communication status.
  • the terminal device communicates with the communication transmission platform through the communication module, it can obtain the signal transmission rate of the current communication link, and the signal transmission rate reflects the signal strength of the network signal transmitted by the current communication link.
  • the signal transmission rate of different communication links can be 6Mbps (Million bits per second, megabits per second), 24Mbps, 54Mbps, etc., which also reflects the network transmission speed of the communication link.
  • Step 304 When the signal strength of the first network signal and/or the signal strength of the second network signal is greater than or equal to the first threshold, select the first communication link and/or the second communication link according to a preset transmission strategy Way to transmit data.
  • the first network signal may be a 4G network signal
  • the second network signal may be a WiFi network signal.
  • the 4G network signal has the characteristics of low network delay and good real-time communication effect.
  • the WiFi network signal has high bandwidth and can carry large-flow data transmission 4G network signal and WiFi network signal are commonly used wireless communication signals of terminal devices.
  • the signal strength of the first network signal and the second network signal is preferentially determined to determine whether to select the 4G network or the WiFi network according to the signal strength Communicate.
  • the first threshold may be understood as a defined value of the signal strength when the network signal is in a better signal state.
  • the signal strength of the first network signal and/or the signal strength of the second network signal is greater than or equal to the first threshold, it indicates that the first network signal and/or the second network signal are in a better signal state.
  • the strategy selects a communication link corresponding to the first network signal and/or the second network signal to transmit data, that is, selects the first communication link and/or the second communication link to communicate.
  • Step 306 When the signal strength of the first network signal and the signal strength of the second network signal are less than the second threshold, select the third communication link to transmit data.
  • the third network signal may be a COFDM network signal.
  • the COFDM network uses low frequency band communication, and has good "diffraction” and “penetration” capabilities in a non-visible and blocked environment.
  • the signal strength of the first network signal and the signal strength of the second network signal are less than the second threshold, it indicates that the first network signal and the second network signal are in a state of poor signal, and the choice of the first network or the second network will affect Data transmission effect
  • the communication link corresponding to the third network signal is used to transmit data, that is, the third communication link is used for communication, which can bring better communication effect and ensure the timeliness and smoothness of data transmission.
  • the communication link switching method provided in this embodiment detects the signal strength of the first network signal and the signal strength of the second network signal in real time, when the signal strength of the first network signal and/or the second network signal When the signal strength of is greater than or equal to the first threshold, the first communication link and/or the second communication link are selected to transmit data according to a preset transmission strategy, when the signal strength of the first network signal and the signal strength of the second network signal When it is less than the second threshold, the third communication link is selected to transmit data.
  • the communication link can be automatically switched according to the signal strength of different network signals, the stability of the communication system is improved, and the robustness of the terminal device in the communication process is improved.
  • the data transmitted by the terminal device includes data of the first type and data of the second type, where the first type of data refers to a data type with low bandwidth requirements, such as control instructions; the second type of data refers to It is a data type that requires high bandwidth, such as audio and video data.
  • step 304 also includes the following steps 402 to 406:
  • Step 402 When the signal strengths of the first network signal and the second network signal are greater than or equal to the first threshold, select the first type of data to transmit through the first communication link, and select the second type of data to pass the first Two communication link transmission.
  • the communication link corresponding to the first network signal and the second network signal can be selected to transmit data according to requirements, that is, the first The communication link communicates with the second communication link.
  • the first threshold may be -105 dBm.
  • the signal strength of the network signal is greater than or equal to -105 dBm, it is determined that the network signal is in a better signal state.
  • the signal strengths of the 4G network signal and the WiFi network signal are greater than or equal to -105 dBm, the 4G network can be preferentially selected for data types with low bandwidth requirements, and the WiFi network can be preferentially selected for data types with high bandwidth requirements.
  • Step 404 When the signal strength of the first network signal is greater than or equal to the first threshold and the signal strength of the second network signal is less than the second threshold, select the first type of data and the second type of data to pass the first Communication link for transmission.
  • the second threshold can be understood as a defined signal strength value of the network signal in a poor signal state.
  • the signal strength of the first network signal is greater than or equal to the first threshold, and the signal strength of the second network signal is less than the second threshold, it indicates that the first network signal is in a better signal state, and the second network signal is in a worse signal state
  • the second threshold may be -115 dBm.
  • the network signal is determined to be in a poor signal state.
  • the signal strength of the 4G network signal is greater than or equal to -105 dBm and the signal strength of the WiFi network signal is less than -115 dBm, the data type with low bandwidth requirements and the data type with high bandwidth requirements will be preferentially selected for 4G network communication.
  • Step 406 When the signal strength of the second network signal is greater than or equal to the first threshold and the signal strength of the first network signal is less than the second threshold, select the first type data and the second type data to pass the second Communication link for transmission.
  • the WiFi network signal when the signal strength of the WiFi network signal is greater than or equal to -105 dBm and the signal strength of the 4G network signal is less than -115 dBm, the data type with low bandwidth requirements and the data type with high bandwidth requirements will be selected as the WiFi network. Signals to communicate.
  • the communication link switching method provided by this embodiment can automatically switch the communication link according to the signal strength of different network signals, which improves the stability of the communication system and improves the robustness of the terminal device in the communication process.
  • the first type of data includes but is not limited to control instructions, request instructions, intercom instructions, etc.
  • the second type of data includes but is not limited to picture data, audio data, video data, and the like.
  • the communication module includes a 4G communication module
  • the communication transmission platform includes a mobile base station
  • the 4G communication module establishes a communication connection with the mobile base station for transmitting 4G network signals.
  • the inspection robot can connect to the operator's 4G network base station through the 4G module, and then access the Internet to interact with the server and the final control platform deployed on the user side.
  • the communication module further includes a WiFi communication module
  • the communication transmission platform further includes a wireless access point.
  • the WiFi communication module establishes a communication connection with the wireless access point for transmitting WiFi network signals.
  • the inspection robot connects to the self-deployed AP base station through the WiFi communication module, and then accesses the Internet to interact with the server and the final control platform deployed on the user side.
  • the communication module further includes a COFDM communication module
  • the communication transmission platform further includes a COFDM device.
  • the COFDM communication module establishes a communication connection with the COFDM device for transmitting COFDM network signals.
  • the inspection robot establishes a point-to-point transmission link with the COFDM device on the user side through the COFDM communication module, and then accesses the Internet to interact with the server and the final control platform deployed on the user side.
  • the terminal device will detect the quality of the first network signal and the second network signal in real time during operation, and compare it with the set threshold value, and match the corresponding network communication mode according to the comparison result.
  • the first network is preferred, for data types with high bandwidth requirements, the second network is preferred, and the third network is used as the bottom communication method.
  • steps in FIGS. 3-4 described above are displayed in order according to the arrows, the steps are not necessarily executed in the order indicated by the arrows. Unless clearly stated in this article, the execution of these steps is not strictly limited in order, and these steps may be executed in other orders. Moreover, at least some of the steps in FIGS. 3-4 may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but may be executed at different times. These sub-steps or stages The execution order of is not necessarily sequential, but may be executed in turn or alternately with at least a part of other steps or sub-steps or stages of other steps.
  • a communication link switching device includes a signal strength detection module 510, a first selection module 520, and a second selection module 530.
  • the signal strength detection module 510 is used to detect the signal strength of the first network signal and the signal strength of the second network signal in real time.
  • the first selection module 520 is configured to select the first communication link and/or the second communication link according to a preset transmission strategy when the signal strength of the first network signal and/or the signal strength of the second network signal is greater than or equal to a first threshold
  • the communication link transmits data.
  • the second selection module 530 is configured to select a third communication link to transmit data when the signal strength of the first network signal and the signal strength of the second network signal are less than the second threshold.
  • the above-mentioned communication link switching device can automatically switch the communication link according to the signal strength of different network signals, which improves the stability of the communication system and improves the robustness of the terminal device in the communication process.
  • Each module in the above switching device of the communication link may be implemented in whole or in part by software, hardware, or a combination thereof.
  • the above modules may be embedded in the hardware form or independent of the processor in the computer device, or may be stored in the memory in the computer device in the form of software so that the processor can call and execute the operations corresponding to the above modules.
  • each module in the communication link switching device may be in the form of a computer program.
  • the computer program can be run on a terminal or a server.
  • the program module composed of the computer program can be stored in the memory of the terminal or the server.
  • the embodiments of the present application also provide a computer-readable storage medium.
  • One or more non-volatile computer-readable storage media containing computer-executable instructions, when the computer-executable instructions are executed by one or more processors, causing the processors to execute as described in the above embodiments Describe the switching method of communication link.
  • An embodiment of the present application also provides a computer program product.
  • a computer program product containing instructions, when it runs on a computer, causes the computer to execute the communication link switching method described in the above embodiments.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device including a server, a data center, and the like integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, Solid State Disk (SSD)).

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Selon des modes de réalisation, la présente invention concerne un appareil et un procédé de transfert intercellulaire de liaison de communication, un terminal, et un support d'informations lisible par ordinateur, le procédé consistant : à détecter en temps réel l'intensité de signal d'un premier signal de réseau et l'intensité de signal d'un second signal de réseau ; lorsque l'intensité de signal du premier signal de réseau et/ou l'intensité de signal du second signal de réseau sont supérieures ou égales à un premier seuil, à sélectionner, sur la base d'une politique de transmission prédéfinie, une première liaison de communication et/ou une seconde liaison de communication permettant de transmettre des données ; et, lorsque l'intensité de signal du premier signal de réseau et l'intensité de signal du second signal de réseau sont inférieures à un second seuil, à sélectionner une troisième liaison de communication permettant de transmettre des données. Le présent procédé permet un transfert intercellulaire automatique de liaisons de communication sur la base de l'intensité de signal de différents signaux de réseau, augmentant la stabilité du système de communication et augmentant la robustesse des dispositifs terminaux pendant le processus de communication.
PCT/CN2018/125105 2018-12-24 2018-12-28 Appareil et procédé de transfert intercellulaire de liaison de communication, terminal, et support d'informations lisible par ordinateur WO2020133289A1 (fr)

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CN201811588372.5 2018-12-24
CN201811588372.5A CN111356190A (zh) 2018-12-24 2018-12-24 通信链路的切换方法、装置、终端和计算机可读存储介质

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