CN111800433A - Method for saving server resources and terminal flow - Google Patents
Method for saving server resources and terminal flow Download PDFInfo
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- CN111800433A CN111800433A CN202010698858.5A CN202010698858A CN111800433A CN 111800433 A CN111800433 A CN 111800433A CN 202010698858 A CN202010698858 A CN 202010698858A CN 111800433 A CN111800433 A CN 111800433A
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 230000003993 interaction Effects 0.000 abstract description 16
- 230000007246 mechanism Effects 0.000 description 7
- 238000004171 remote diagnosis Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/163—In-band adaptation of TCP data exchange; In-band control procedures
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- General Engineering & Computer Science (AREA)
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Abstract
The invention provides a method for saving server resources and terminal flow, which is applied to a server and comprises the following steps: receiving a remote control request instruction sent by intelligent equipment; when the remote control request instruction and the subsequent operation need SSL encryption, judging whether the corresponding terminal is in an SSL encryption connection state currently; when the terminal is not in an SSL encryption connection state, storing the remote control request instruction, and sending a reconnection control instruction connected in an SSL encryption mode to the terminal; aiming at the condition that the connection needs to be kept but the actual interaction is not much, all equipment is kept in connection without encryption, and when the interaction is needed, the equipment is reconnected in an encryption mode through a special instruction, so that the problems of occupying memory resources of a server and consuming terminal flow are effectively solved.
Description
Technical Field
The invention relates to the field of electricity, in particular to the technology of the Internet of things, and particularly relates to a method for saving server resources and terminal traffic.
Background
At present, a mode of maintaining long connection by adopting a Message Queue Telemetry Transport (MQTT) protocol gradually becomes a widely applied standard in the field of internet of things, transmitted data needs to be encrypted under many conditions to prevent important information from being stolen after being intercepted, and the MQTT protocol supports SSL encryption connection, so that the safety of the transmitted data can be ensured without additional development work.
However, in many cases, there are very few terminals that need to be operated at the same time, such as remote control, remote diagnosis, etc., and most terminals only maintain connection and do not transmit data most of the time, but because data needs to be encrypted once the data needs to be transmitted, the connection that is maintained must be SSL encryption connection.
Through tests, the SSL encrypted connection occupies more than 3 times of the memory resource of the server compared with the unencrypted TCP connection, the consumed terminal flow is about 2 times of the TCP connection, and the capital cost spent on renting the cloud server and purchasing the terminal flow is basically the same multiple relation.
Therefore, maintaining an SSL encrypted connection is wasteful of resources in the case of few interactions.
Disclosure of Invention
In view of the above drawbacks of the prior art, an object of the present invention is to provide a method for saving server resources and terminal traffic, so as to solve the problems in the prior art that as long as SSL encryption is required, SSL encryption connection needs to be maintained for a long time, even if there are not many interactions, which results in large server resource occupation and large terminal traffic consumption.
In order to achieve the above and other related objects, the present invention provides a method for saving server resources and terminal traffic, which is applied to a server, and comprises the following steps: receiving a remote control request instruction sent by intelligent equipment; when the remote control request instruction and the subsequent operation need SSL encryption, judging whether the corresponding terminal is in an SSL encryption connection state currently; and when the terminal is not in an SSL encryption connection state, storing the remote control request instruction, and sending a reconnection control instruction connected in an SSL encryption mode to the terminal.
In an embodiment of the present invention, the method further includes: and when the terminal is in an SSL encrypted connection state, sending a remote control request instruction to the terminal.
In an embodiment of the present invention, the method further includes: and when the terminal in the SSL encryption connection state is judged to have no instruction which needs to be connected in an SSL encryption mode within a preset time period, sending a reconnection control instruction which adopts a TCP mode for connection to the terminal.
The invention provides a method for saving server resources and terminal flow, which is applied to a server and comprises the following steps: receiving a query control request instruction sent from a terminal; inquiring whether the stored target instruction and subsequent operation which need to be sent to the terminal need SSL encryption or not according to the inquiry control request instruction, and judging whether the terminal is in an SSL encryption connection state currently or not when the target instruction and the subsequent operation need SSL encryption; and when the terminal is not in the SSL encryption connection state, sending a reconnection control instruction connected in an SSL encryption mode to the terminal.
In an embodiment of the present invention, the method further includes: and when the terminal is in an SSL encrypted connection state, sending the target instruction to the terminal.
In an embodiment of the present invention, the method further includes: and when the terminal in the SSL encryption connection state is judged to have no instruction which needs to be connected in an SSL encryption mode within a preset time period, sending a reconnection control instruction which adopts a TCP mode for connection to the terminal.
The invention provides a method for saving server resources and terminal flow, which is applied to a terminal and comprises the following steps: receiving a reconnection control instruction sent by a server, and disconnecting the reconnection control instruction; determining whether to adopt an SSL encryption mode for reconnection or a TCP mode for reconnection according to the reconnection control instruction; and after the reconnection connection is successful, sending a query control request instruction for querying and storing to the server.
In an embodiment of the present invention, the method further includes: and receiving an instruction except the reconnection control instruction sent by the server, and executing corresponding operation according to the instruction.
In an embodiment of the present invention, the method further includes: and receiving a reconnection control instruction which is sent by the intelligent equipment and connected in a TCP mode.
As described above, the method for saving server resources and terminal traffic according to the present invention has the following beneficial effects:
(1) compared with the prior art, the method and the system have the advantages that all the equipment are kept in unencrypted connection under the condition that connection needs to be kept but actual interaction is not much, and the equipment is reconnected in an encrypted mode through a special instruction when interaction is needed, so that the problems of occupation of memory resources of a server and consumption of terminal flow are effectively solved;
(2) the method for saving server resources and terminal flow provided by the invention reduces the memory configuration requirement of the server to below one third, and reduces the flow consumption of the terminal to about half, thereby greatly saving the server renting cost;
(3) the invention has the advantages that the requirements of remote control, remote diagnosis and the like are met, simultaneously, the number of terminals needing to be operated is small, the pressure influence of other operations on the server is small except the number of connections, and for the conditions, the cost of the server and the flow consumption of the terminals can be greatly reduced under the condition of meeting the requirements.
Drawings
Fig. 1 is a flowchart illustrating a method for saving server resources and terminal traffic according to an embodiment of the present invention.
Fig. 2 is a flowchart illustrating a method for saving server resources and terminal traffic according to another embodiment of the present invention.
Fig. 3 is a flowchart illustrating a method for saving server resources and terminal traffic according to another embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a connection between a server and a terminal according to an embodiment of the present invention.
FIG. 5 is a schematic diagram illustrating a remote control timing sequence according to an embodiment of the present invention.
FIG. 6 is a block diagram of a server according to an embodiment of the present invention.
Description of the reference symbols
S11 to S13.
S21 to S23.
S31 to S33.
Detailed Description
The following description of the embodiments of the present invention is provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than being drawn according to the number, shape and size of the components in actual implementation, and the type, number and proportion of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
Compared with the prior art, the method for saving server resources and terminal flow ensures that all equipment are kept connected without encryption under the condition that connection needs to be kept but actual interaction is not much, and the equipment is reconnected in an encryption mode through a special instruction when interaction is needed, so that the problems of occupying memory resources of a server and consuming terminal flow are effectively solved; the method for saving server resources and terminal flow provided by the invention reduces the memory configuration requirement of the server to below one third, and reduces the flow consumption of the terminal to about half, thereby greatly saving the server renting cost; the invention has the advantages that the requirements of remote control, remote diagnosis and the like are met, simultaneously, the number of terminals needing to be operated is small, the pressure influence of other operations on the server is small except the number of connections, and for the conditions, the cost of the server and the flow consumption of the terminals can be greatly reduced under the condition of meeting the requirements.
As shown in fig. 1, in an embodiment, the method for saving server resources and terminal traffic of the present invention is applied to a server, and includes the following steps:
and step S11, receiving a remote control request instruction sent by the intelligent device.
It should be noted that the smart device includes but is not limited to a smart phone, a tablet computer, a PDA, and other terminal devices with data processing functions; generally, an intelligent device is a terminal device that has an independent operating system, can be provided with programs provided by third-party service providers such as software and games by a user, continuously expands the functions of a handheld device through the programs, and can realize wireless network access through a mobile communication network.
Specifically, a remote control request instruction sent to the server by a webpage or a mobile phone is received.
And step S12, when the remote control request instruction and the subsequent operation need SSL encryption, judging whether the corresponding terminal is in the SSL encryption connection state currently.
And step S13, when the terminal is not in the SSL encryption connection state, storing the remote control request instruction, and sending a reconnection control instruction connected in an SSL encryption mode to the terminal.
It should be noted that, in the case of TCP connection, the 1G memory may maintain a connection number of 5 ten thousand, and the 1G memory 3 maintains a connection number of about 1.5 ten thousand using SSL encryption connection; the terminal adopts TCP connection, actually tests the heartbeat interval of 60 seconds, spends 250KB flow in one day, averages the next heartbeat by 0.17 KB; using SSL encrypted connections, approximately 470KB is consumed per day, and approximately 0.32KB is a heartbeat.
Furthermore, before the server sends a reconnection control instruction connected in an SSL encryption mode to the terminal, the reconnection control instruction needs to be defined on the server in advance so as to realize encryption interaction through the server control terminal; for example, when uploading encrypted data, the server first sends a reconnection control instruction (MQTT instruction) for reconnection, and the terminal reconnects the server (MQTT Broker of the server) by using an SSL encryption method.
In an embodiment, the method further includes sending a remote control request instruction to the terminal when the terminal is in the SSL encrypted connection state.
Furthermore, a default MQTT Broker address built in the terminal is trustworthy, so that any instruction issued from the server side is trusted; the purpose of encrypted connection is to prevent stealing important information after data is intercepted, and the mutual trust mechanism of the server and the terminal is ensured by the configuration of MQTT Broker and the characteristic of long connection.
In an embodiment, the method further includes sending a reconnection control instruction for connecting in a TCP manner to the terminal when it is determined that the terminal in the SSL encryption connection state does not have an instruction for connecting in an SSL encryption manner within a preset time period.
Further, a mechanism for returning the terminal connected in the SSL encryption mode to the TCP mode for connection without encryption is defined on the server; specifically, a rule can be formulated according to the service requirement, and if it is clear that the current state of the terminal does not need to be encrypted and interacted, a reconnection instruction is issued to enable the terminal to keep the long connection without encryption of the TCP; if the service requirement may cause the terminal to perform encryption interaction for multiple times in a short time, a timeout time needs to be defined, and after the terminal does not perform encryption interaction for a long time, a reconnection instruction is issued to cause the terminal to maintain the long connection without encryption of the TCP.
It should be noted that the protection scope of the method for saving server resources and terminal traffic according to the present invention is not limited to the execution sequence of the steps listed in this embodiment, and all the solutions implemented by adding, subtracting, and replacing steps in the prior art according to the principles of the present invention are included in the protection scope of the present invention.
As shown in fig. 2, in an embodiment, the method for saving server resources and terminal traffic of the present invention is applied to a server, and includes the following steps:
step S21, an inquiry control request command transmitted from the terminal is received.
Step S22, according to the query control request instruction, querying whether the stored target instruction and the subsequent operation which need to be sent to the terminal need SSL encryption, and when the target instruction and the subsequent operation need SSL encryption, judging whether the terminal is in SSL encryption connection state currently.
It should be noted that, a mechanism for querying a saved instruction is defined on the server in advance; and after the terminal is successfully connected, inquiring the stored command of the terminal needing encryption interaction by the server, and if the terminal is connected in a non-encrypted TCP mode at present, issuing a reconnected control command to ensure that the terminal reconnects the server in an SSL encryption mode, and otherwise, issuing the stored control command one by one.
Further, the mechanism for querying the saved command may be self-defined, but it needs to include a clientId of the terminal (the clientId is a unique identifier Id when the terminal is connected to the MQTT Broker), so that the server can accurately send the command to the terminal, and can also identify which terminal is when receiving the command from the terminal.
It should be noted that, when the interface of the server called by the web page or the mobile phone initiates the instruction requiring the encryption interaction, the clientId of the terminal also needs to be specified.
And step S23, when the terminal is not in the SSL encryption connection state, sending a reconnection control instruction connected in an SSL encryption mode to the terminal.
In an embodiment, the method further includes sending the target instruction to the terminal when the terminal is in the SSL encryption connection state.
In an embodiment, the method further includes sending a reconnection control instruction for connecting in a TCP manner to the terminal when it is determined that the terminal in the SSL encryption connection state does not have an instruction for connecting in an SSL encryption manner within a preset time period.
It should be noted that the protection scope of the method for saving server resources and terminal traffic according to the present invention is not limited to the execution sequence of the steps listed in this embodiment, and all the solutions implemented by adding, subtracting, and replacing steps in the prior art according to the principles of the present invention are included in the protection scope of the present invention.
As shown in fig. 3, in an embodiment, the method for saving server resources and terminal traffic of the present invention is applied to a terminal, and includes the following steps:
and step S31, receiving a reconnection control instruction sent by the server, and disconnecting the reconnection control instruction.
It should be noted that the reconnection control instruction enables the terminal to identify whether to connect in the SSL encryption mode or the TCP mode.
And step S32, determining whether to adopt SSL encryption mode or TCP mode to reconnect according to the reconnecting control instruction.
And step S33, after the reconnection is successful, sending a query control request instruction for querying and storing to the server.
In an embodiment, the method further includes receiving an instruction sent by the server except the reconnection control instruction, and executing a corresponding operation according to the instruction.
Specifically, the server sends other instructions except the reconnection control instruction to the terminal, and the terminal executes corresponding control operation according to the received instruction.
It should be noted that, a mechanism for storing instructions (including reconnection control instructions) is defined in advance on the server (various instructions can be freely defined, as long as the corresponding terminal can recognize and execute correctly); specifically, when the encryption interaction is carried out through the server control terminal, the instruction is firstly stored in the server, and when the concurrent processing is less, the instruction is directly stored in the database; when the concurrent processing is more, cache needs to be made in the memory database.
Further, when there are multiple instructions, it is necessary to design multiple instructions to be stored in sequence on the server.
It should be noted that, when there is only a single instruction in the service requirement, the state table corresponding to the instruction may be directly set, one terminal corresponds to one instruction, and the instruction repeatedly requested from the web page or the mobile phone directly covers the previous instruction; if there are many control commands, it needs to design the storage mechanism of many commands, a terminal corresponds to many commands, if the repeated sending of commands can cause the business logic error, it needs to set the mechanism of deleting the stored commands after the commands are sent.
In an embodiment, the method further includes receiving a reconnection control instruction which is sent by the intelligent device and connected in a TCP manner.
Specifically, the terminal that sets the specified clientId on the web page or the mobile phone terminal is not connected in an SSL encryption manner, but in a TCP manner, and the web page or the mobile phone terminal sends a reconnection control instruction corresponding to the setting to the terminal.
It should be noted that the protection scope of the method for saving server resources and terminal traffic according to the present invention is not limited to the execution sequence of the steps listed in this embodiment, and all the solutions implemented by adding, subtracting, and replacing steps in the prior art according to the principles of the present invention are included in the protection scope of the present invention.
The method for saving server resources and terminal traffic according to the present invention is further explained by the following specific embodiments.
As shown in fig. 4 to fig. 6, in an embodiment, an operator sends a control instruction to a server on a web page or a mobile phone, and the web page or the mobile phone interacts with the server through an HTTP communication layer of the server, and interacts with a terminal through an mqttbreaker of the server.
Specifically, an operator sends a remote control instruction requesting remote control to a server on a webpage or a mobile phone end, when the terminal is not in an SSL encryption connection state, the server stores the remote control instruction and sends a reconnection control instruction (MQTT reconnection instruction) connected in an SSL encryption mode to the terminal, and when the terminal is in the SSL encryption connection state, the remote control instruction is sent to the terminal so that the terminal executes corresponding control operation according to the remote control instruction; the server receives a control instruction for inquiring the last time sent by the terminal, and sends a reconnection control instruction connected in an SSL encryption mode to the terminal when the terminal is not in an SSL encryption connection state, and sends a remote control instruction to the terminal when the terminal is in the SSL encryption connection state, so that the terminal executes corresponding control operation according to the remote control instruction; after receiving the reconnection control instruction sent by the server, the terminal can determine whether to adopt an SSL encryption mode for reconnection or a TCP mode for reconnection according to the reconnection control instruction, and after the reconnection is successful, sends an inquiry control request instruction (instruction execution result data) for inquiring and storing to the server.
In summary, compared with the prior art, the method for saving server resources and terminal traffic of the present invention allows all devices to maintain unencrypted connections in case of needing to maintain connections but having few actual interactions, and allows the devices to reconnect in an encrypted manner through a special instruction when interaction is needed, thereby effectively solving the problems of occupying memory resources of the server and consuming terminal traffic; the method for saving server resources and terminal flow provided by the invention reduces the memory configuration requirement of the server to below one third, and reduces the flow consumption of the terminal to about half, thereby greatly saving the server renting cost; the invention has the advantages that the requirements of remote control, remote diagnosis and the like are met, simultaneously, the number of terminals needing to be operated is small, the pressure influence of other operations on the server is small except the number of connections, and for the conditions, the cost of the server and the flow consumption of the terminals can be greatly reduced under the condition of meeting the requirements; therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (9)
1. A method for saving server resources and terminal traffic is applied to a server, and is characterized by comprising the following steps:
receiving a remote control request instruction sent by intelligent equipment;
when the remote control request instruction and the subsequent operation need SSL encryption, whether the corresponding terminal is located currently is judged
Encrypting the connection state at the SSL;
when the terminal is not in the SSL encryption connection state, the remote control request instruction is stored and sent to the terminal
And the end sends a reconnection control instruction connected in an SSL encryption mode.
2. The method for conserving server resources and terminal traffic as recited in claim 1, further comprising: and when the terminal is in an SSL encrypted connection state, sending a remote control request instruction to the terminal.
3. The method for conserving server resources and terminal traffic as recited in claim 1, further comprising: and when the terminal in the SSL encryption connection state is judged to have no instruction which needs to be connected in an SSL encryption mode within a preset time period, sending a reconnection control instruction which adopts a TCP mode for connection to the terminal.
4. A method for saving server resources and terminal traffic is applied to a server, and is characterized by comprising the following steps:
receiving a query control request instruction sent from a terminal;
inquiring the stored target instruction and subsequent operation required to be sent to the terminal according to the inquiry control request instruction
Making a determination as to whether SSL encryption is required, and determining the end when SSL encryption is required for the target instruction and the subsequent operation
Whether the terminal is in an SSL encryption connection state currently;
when the terminal is not in SSL encryption connection state, the terminal is sent to the terminal and connected in SSL encryption mode
And reconnecting the control command.
5. The method for conserving server resources and terminal traffic as recited in claim 4, further comprising: and when the terminal is in an SSL encrypted connection state, sending the target instruction to the terminal.
6. The method for conserving server resources and terminal traffic as recited in claim 4, further comprising: and when the terminal in the SSL encryption connection state is judged to have no instruction which needs to be connected in an SSL encryption mode within a preset time period, sending a reconnection control instruction which adopts a TCP mode for connection to the terminal.
7. A method for saving server resources and terminal traffic is applied to a terminal, and is characterized by comprising the following steps:
receiving a reconnection control instruction sent by a server, and disconnecting the reconnection control instruction;
determining whether to adopt an SSL encryption mode for reconnection or a TCP mode for reconnection according to the reconnection control instruction;
and after the reconnection connection is successful, sending a query control request instruction for querying and storing to the server.
8. The method for conserving server resources and terminal traffic as recited in claim 7, further comprising: and receiving an instruction except the reconnection control instruction sent by the server, and executing corresponding operation according to the instruction.
9. The method for conserving server resources and terminal traffic as recited in claim 7, further comprising: and receiving a reconnection control instruction which is sent by the intelligent equipment and connected in a TCP mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010698858.5A CN111800433A (en) | 2020-07-20 | 2020-07-20 | Method for saving server resources and terminal flow |
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| CN202010698858.5A CN111800433A (en) | 2020-07-20 | 2020-07-20 | Method for saving server resources and terminal flow |
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| CN111800433A true CN111800433A (en) | 2020-10-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113132475A (en) * | 2021-04-16 | 2021-07-16 | 天津市康晟伟业智能科技有限公司 | Information interaction method and monitoring system |
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| CN103858389A (en) * | 2013-05-31 | 2014-06-11 | 华为技术有限公司 | Session transmission method, client and Push server |
| CN105392131A (en) * | 2015-10-19 | 2016-03-09 | 上海斐讯数据通信技术有限公司 | Device and method for configuring and managing wireless access point |
| US10080193B1 (en) * | 2016-03-24 | 2018-09-18 | Amazon Technologies, Inc. | Power efficient wireless connectivity |
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| CN113132475A (en) * | 2021-04-16 | 2021-07-16 | 天津市康晟伟业智能科技有限公司 | Information interaction method and monitoring system |
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