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CN119814814A - An intelligent communication system based on network control - Google Patents

An intelligent communication system based on network control Download PDF

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Publication number
CN119814814A
CN119814814A CN202411763219.7A CN202411763219A CN119814814A CN 119814814 A CN119814814 A CN 119814814A CN 202411763219 A CN202411763219 A CN 202411763219A CN 119814814 A CN119814814 A CN 119814814A
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data
communication system
intelligent communication
network
server
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请求不公布姓名
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Hebei Qiujing Technology Co ltd
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Hebei Qiujing Technology Co ltd
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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
    • 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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H04W12/068—Authentication using credential vaults, e.g. password manager applications or one time password [OTP] applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • 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

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Health & Medical Sciences (AREA)
  • Computing Systems (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The invention discloses an intelligent communication system based on network management and control, which comprises the steps of performing coding optimization management of the network intelligent communication system, performing physical layer and link control on the network intelligent communication system, performing operation analysis control management of the network intelligent communication system, and performing subscription storage processing of the network intelligent communication system, wherein the performing coding optimization management of the network intelligent communication system comprises performing network access configuration processing of terminal equipment by a method of jointly coding multicast addresses and data frame lengths, wherein the coding optimization management of the network intelligent communication system comprises the steps of using a coding 23-bit low-order high-7-bit identification to allocate the belonging field of network data, using a low-order 16-bit to represent coding data, and using a data frame length to represent the serial number of each frame of data. The physical layer and link control of the network intelligent communication system comprises the step of adopting Wi-Fi wireless signals to carry out information communication transmission in the physical layer of the network intelligent communication system. The invention has the characteristics of high efficiency management and control and strong stability.

Description

Intelligent communication system based on network management and control
Technical Field
The invention relates to the technical field of communication, in particular to an intelligent communication system based on network management and control.
Background
With the continuous development of information technology and the internet, the internet of things becomes a hot spot field of global attention, and is considered to be the most important technological innovation following the internet. The internet of things refers to sorting, networking and networking physical entities through various network connection technologies and information transmission technologies, so that connection and interaction among things and people are realized, a large number of wide data acquisition, transmission and application are completed, and automatic management and remote control are realized. The physical entity is accessed to the network by the Internet of things, and data transmission, data storage, data control and management are performed by the communication network, so that the interconnection and intercommunication of any time, any place and any object are realized. Along with the continuous expansion of the scale of the internet of things, the access quantity of equipment is increased, the data processing capacity is also rapidly increased, and the existing reliability, stability and data concurrency processing capacity of the system are difficult to meet the processing requirements of the internet of things. Therefore, it is necessary to design an intelligent communication system based on network management with high efficiency management control and high stability.
Disclosure of Invention
The invention aims to provide an intelligent communication system based on network management and control, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme that the intelligent communication method based on network management and control comprises the following steps:
performing coding optimization management of a network intelligent communication system;
performing physical layer and link control on the network intelligent communication system;
Performing operation analysis control management of the network intelligent communication system;
subscription storage processing of the network intelligent communication system is carried out;
the code optimization management of the network intelligent communication system comprises the following steps:
the network access configuration processing of the terminal equipment is carried out by a method of jointly encoding the multicast address and the data frame length, the field of the distribution network data is identified by the upper 7 bits of the 23-bit low-order bits which can be encoded, the encoded data is represented by the lower 16 bits, and the serial number of each frame of data is represented by the data frame length.
According to the above technical solution, the performing physical layer and link control on the network intelligent communication system includes:
In a physical layer of a network intelligent communication system, carrying out information communication transfer by adopting Wi-Fi wireless signals, encoding by using a destination MAC address field and a data frame length of a controllable 802.11 data frame, wherein the destination MAC address field carries Wi-Fi configuration data, the data frame length represents a serial number of the configuration data, each field serial number starts from 1, each serial number carries user data of 2Byte, and a device end analyzes the encoded data by using the serial number of the data frame, so that SSID and password of a wireless network access point and the configuration data are obtained;
The link layer data structure of the intelligent network communication system is designed and consists of two fields, namely a magic code and a data code, wherein the data code field carries SSID and password information of a wireless network access point, and meanwhile, in order to prevent network information failure caused by packet loss, an information sender is set to send 20 frames of magic codes, and all data code field information is sent 15 times in a circulating way.
According to the above technical solution, the performing operation analysis control management of the network intelligent communication system includes:
Starting a 100ms timer before starting network configuration of the network intelligent communication system, switching Wi-Fi channels in sequence in a timer interrupt service function, setting Wi-Fi data filtering conditions according to a destination MAC address (the Wi-Fi module can receive all data packets in a monitoring mode, and the data quantity is very large, so that the Wi-Fi module needs to be set to the monitoring mode at the same time of setting the filtering conditions), setting the Wi-Fi module to the monitoring mode, receiving 802.11 data frames, calling a Config_Recv () function to analyze data when receiving one frame of data, judging the return value of the interface function, if the Config_Locked is returned, indicating that a channel is Locked, closing the timer to stop switching channels, if the Config_Complete is returned, indicating that network configuration data analysis is completed, closing the monitoring mode, canceling the filtering conditions, and acquiring SSID, password and other data configured by a user.
According to the above technical solution, the performing operation analysis control management of the network intelligent communication system further includes:
Control analysis is carried out on an access information request of a cloud platform of terminal equipment, an IP address of an HTTP server is obtained by using a DNS domain name resolution function according to a domain name of the server, TCP connection is established with the server according to the IP address and a port number of the HTTP server obtained by domain name resolution, when the connection fails, connection is attempted to be reestablished every set time until the number of times of the attempt reaches a set threshold value, connection is considered to be unable to be established, connection with the server is not established any more, after the TCP connection is successfully established with the server, application data are packed in an HTTP format according to the request requirement of an application program, and a request is submitted to the HTTP server;
When the MQTT client establishes connection with the server, the keep-alive time is set in the variable header of the CONNECT message (the keep-alive time defines the maximum time interval when the server receives the client message), so that the client transmits at least one message to the server in each keep-alive time interval, if no service-related message is to be transmitted in the time interval, the client transmits a PINGREQ heartbeat request message to the server so as to maintain long connection with the server, otherwise, if the server does not receive the client message in 1.5 keep-alive time, the client is regarded as that the client transmits a DISCNECT message, and the connection with the client is disconnected.
According to the above technical solution, the subscription storage processing of the network intelligent communication system includes:
The client subscribes one or more topics to the server each time to complete different message communication requirements, so that each topic is assigned with the corresponding QoS; in the step, the client terminal contains a wild card when subscribing, which enables the subscription to a specific topic mode, the MQTT proxy server needs to respond to each subscription request and records the subscription request in a topic subscription table, and when receiving the information issued by the client terminal, the MQTT proxy server pushes the information according to the topic of the information to complete the communication between different client terminals;
And after the operation processing information of the network intelligent communication system is acquired, the operation processing information is backed up and stored for subsequent consulting, analyzing and processing.
According to the above technical scheme, an intelligent communication system based on network management and control includes:
the management control module is used for performing management control on the network intelligent communication system;
the analysis management module is used for performing operation analysis management of the network intelligent communication system;
and the subscription storage module is used for carrying out subscription storage processing of the network intelligent communication system. .
According to the above technical scheme, the management control module includes:
the code management module is used for carrying out code control management of the network intelligent communication system;
the physical layer module is used for carrying out optimization control management on the physical layer of the system;
and the link control module is used for carrying out the link control of the network intelligent communication system.
According to the above technical solution, the analysis management module includes:
the terminal distribution network module is used for controlling terminal distribution network of the network intelligent communication system;
the access analysis module is used for carrying out cloud platform access analysis management of the terminal equipment;
And the connection request module is used for carrying out client connection request processing.
According to the above technical solution, the subscription storage module includes:
the topic subscription module is used for topic subscription control management;
And the backup storage module is used for carrying out backup storage of the data information.
Compared with the prior art, the invention has the beneficial effects that the invention, through being provided with the management control module, the analysis management module and the subscription storage module, not only can strengthen the capability of expressing information of multicast data frames as much as possible, but also can reduce the risk of unsuccessful information transmission caused by packet loss in the transmission process, effectively improve the efficiency and accuracy of the operation of the Internet of things, and greatly improve the capability of processing data concurrency
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a flow chart of an intelligent communication method based on network management and control according to an embodiment of the present invention;
fig. 2 is a block diagram of an intelligent communication system based on network management and control according to a second embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a flowchart of an intelligent communication method based on network management and control according to an embodiment of the present invention, where the method may be implemented by an intelligent communication system based on network management and control according to an embodiment of the present invention, and the system is composed of a plurality of software and hardware modules, as shown in fig. 1, and the method specifically includes the following steps:
S101, performing coding optimization management of a network intelligent communication system;
In the embodiment of the invention, network access configuration processing of terminal equipment is carried out by a method for jointly encoding multicast address and data frame length, the affiliated field of distribution network data is marked by high 7 bits of 23 bits of low order bits which can be encoded, encoded data is represented by low 16 bits, the serial number of each frame of data is represented by data frame length, in the step, information such as SSID (service set identifier) and password of a wireless network access point is encoded in a target IP (Internet protocol) multicast address and data packet length according to a set protocol format by utilizing UDP (user datagram protocol) multicast communication, a multicast data packet is sent by a mobile phone, PAD (physical address) and other third party tools which are provided with the configuration tool, wi-Fi is set to be in a detection mode, the data information transmitted by the mobile phone to an AP (access point) and forwarded by the AP to a local area network is detected, the network data packet in the air is captured from a data link layer, the target MAC address and the frame length are analyzed according to the encoding protocol, the Wi-Fi configuration information is obtained, and the wireless network access point is connected, in the step, the capability of multicasting the information of the data frame expression information is enhanced as far as possible, and the risk of unsuccessful packet transmission caused by packet loss in transmission can be reduced.
S102, performing physical layer and link control on a network intelligent communication system;
In the embodiment of the invention, in the physical layer of the network intelligent communication system, wi-Fi wireless signals are adopted to carry out information communication transmission, a destination MAC address field of a controllable 802.11 data frame and a data frame length are used for encoding, the destination MAC address field carries Wi-Fi configuration data, the data frame length represents a serial number of the configuration data, each field serial number starts from 1, each serial number carries user data of 2Byte, and an equipment end analyzes the encoded data by the serial number of the data frame, so that SSID, password and configuration data of a wireless network access point are obtained; in this step, before transmitting the link layer data, 20 frames of preamble fields are required to be transmitted, the destination MAC address of the preamble fields is fixed to be 0x01-00-5E-76-00-00, the data frame length is fixed to be 1, after receiving the preamble field data packet, the receiver locks to continue to receive other data transmitted by the sender on the current channel, and subtracts 1 from the received data frame length to obtain the length difference value, for example, the receiver captures the preamble field data packet in 802.11 format by monitoring, the length of the preamble field data packet is 43, the length difference value can be determined to be 43-1=42, and then the receiver subtracts 42 from the data frame length after receiving the data, so as to obtain the accurate transmitted data length, that is, the actual coded data sequence number.
The link layer data structure of the intelligent network communication system is designed and consists of two fields, namely a magic code and a data code, wherein datacode fields carry SSID and password information of a wireless network access point, and meanwhile, in order to prevent network allocation information failure caused by packet loss, an information sender is set to send 20 frames of magic codes and send all data code field information circularly for 15 times.
S103, performing operation analysis control management of the network intelligent communication system;
In the embodiment of the invention, a 100ms timer is started before the network intelligent communication system network allocation starts, wi-Fi channels are sequentially switched in a timer interrupt service function, wi-Fi data filtering conditions are set according to a target MAC address (the Wi-Fi module can receive all data packets in a monitoring mode, the data quantity is very large, the Wi-Fi module needs to be set in the monitoring mode, the filtering conditions are set at the same time of setting the monitoring mode), the Wi-Fi module is set in the monitoring mode, 802.11 data frames are received, a Config_Recv () function is called for data analysis when each frame of data is received, the return value of the interface function is judged, if the Config_Locked is returned, the channel is Locked, the timer is required to be closed to stop switching channels, if the Config_Compclet is returned, the network allocation data analysis is finished, the monitoring mode is closed, the filtering conditions are canceled, the SSID, the password and other data configured by a user are acquired, and the network allocation efficiency and the accuracy of the system terminal are effectively improved through the steps.
The method comprises the steps of obtaining an IP address of an HTTP server by using a DNS domain name resolution function according to a domain name of the server, establishing TCP connection with the server according to the IP address and port number of the HTTP server obtained by domain name resolution, when the connection fails, attempting to reestablish the connection every set time until the number of times of the attempt reaches a set threshold value, considering that the connection can not be established any more, establishing the connection with the server, after the TCP connection is successfully established with the server, packaging application data in an HTTP format according to the request requirement of an application program, submitting the request to the HTTP server, waiting for response data of the server, resolving the response data according to an HTTP protocol format, when the resolved state code is successful, further resolving the entity content in the response data, when the resolved state code is wrong, prompting the request failure, and carrying out corresponding processing according to the wrong state code, closing the TCP connection with the server after the response data of the HTTP server is completed.
When the MQTT client establishes connection with the server, keep-alive time is set in a variable header of the CONNECT message (the keep-alive time defines the maximum time interval when the server receives the client message), so that the client transmits at least one message to the server in each keep-alive time interval, if no service-related message is to be transmitted in the period, the client transmits a PINGREQ heartbeat request message to the server so as to keep long connection with the server, otherwise, if the server does not receive the client message in 1.5 keep-alive time, the server is regarded as the client to transmit a DISCNECT message and DISCONNECT the connection with the client, and through the step, the connection processing efficiency of the network intelligent communication system is effectively improved, and the waste of connection resources is avoided.
S104, carrying out subscription storage processing of the network intelligent communication system;
In this step, the client may include a wild card when subscribing, which makes it possible to subscribe to a specific topic mode, and the MQTT proxy server needs to respond to each subscription request and record in a topic subscription table, and when receiving a message issued by the client, pushes a message according to the topic of the message to complete communication between different clients;
And after the operation processing information of the network intelligent communication system is acquired, the operation processing information is backed up and stored for subsequent consulting, analyzing and processing.
In a second embodiment, the present invention provides an intelligent communication system based on network management and control, and fig. 2 is a schematic diagram of module configuration of the intelligent communication system based on network management and control provided in the second embodiment, as shown in fig. 2, the system includes:
the management control module is used for performing management control on the network intelligent communication system;
the analysis management module is used for performing operation analysis management of the network intelligent communication system;
And the subscription storage module is used for carrying out subscription storage processing of the network intelligent communication system.
In some embodiments of the invention, the management control module comprises:
the code management module is used for carrying out code control management of the network intelligent communication system;
the physical layer module is used for carrying out optimization control management on the physical layer of the system;
and the link control module is used for carrying out the link control of the network intelligent communication system.
In some embodiments of the invention, the analysis management module comprises:
the terminal distribution network module is used for controlling terminal distribution network of the network intelligent communication system;
the access analysis module is used for carrying out cloud platform access analysis management of the terminal equipment;
And the connection request module is used for carrying out client connection request processing.
In some embodiments of the invention, the subscription storage module comprises:
the topic subscription module is used for topic subscription control management;
And the backup storage module is used for carrying out backup storage of the data information.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the above-mentioned embodiments are merely preferred embodiments of the present invention, and the present invention is not limited thereto, but may be modified or substituted for some of the technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (1)

1.一种基于网络管控的智能通信方法，其特征在于：包括：1. An intelligent communication method based on network management and control, characterized in that it includes: 进行网络智能通信系统的编码优化管理；Carry out coding optimization management of network intelligent communication system; 对网络智能通信系统进行物理层及链路控制；Perform physical layer and link control on network intelligent communication systems; 进行网络智能通信系统的运行分析控制管理；Conduct operation analysis, control and management of network intelligent communication systems; 进行网络智能通信系统的订阅存储处理；Carry out subscription storage processing of network intelligent communication system; 所述进行网络智能通信系统的编码优化管理包括：The coding optimization management of the network intelligent communication system includes: 通过组播地址和数据帧长度共同编码的方法，进行终端设备的网络接入配置处理，以可编码的23位低序位的高7位标识配网数据的所属字段，以低16位表示编码数据，以数据帧长度表示每帧数据的序列号；The network access configuration of the terminal device is processed by a method of jointly encoding the multicast address and the data frame length. The high 7 bits of the 23 low-order bits that can be encoded are used to identify the field to which the network configuration data belongs, the low 16 bits are used to represent the encoded data, and the data frame length is used to represent the sequence number of each frame of data. 所述对网络智能通信系统进行物理层及链路控制包括：The physical layer and link control of the network intelligent communication system includes: 在网络智能通信系统的物理层中，采用Wi-Fi无线信号进行信息通信传递，使用可控的802.11数据帧的目的MAC地址字段和数据帧长度进行编码，目的MAC地址字段携带Wi-Fi配置数据，数据帧长度表示配置数据的序列号，每个字段序列号从1开始，每个序列号携带2Byte的用户数据，设备端以数据帧的序列号对编码数据进行解析，从而获得无线网络接入点的SSID和密码及配置数据；In the physical layer of the network intelligent communication system, Wi-Fi wireless signals are used for information communication transmission, and the destination MAC address field and data frame length of the controllable 802.11 data frame are used for encoding. The destination MAC address field carries Wi-Fi configuration data, and the data frame length indicates the serial number of the configuration data. Each field serial number starts from 1, and each serial number carries 2Byte of user data. The device side parses the encoded data with the serial number of the data frame to obtain the SSID, password and configuration data of the wireless network access point; 设计网络智能通信系统的链路层数据结构，由magic code和data code两个字段组成，data code字段携带无线网络接入点的SSID和密码信息，同时为防止因丢包而造成的配网信息失败，设定信息发送方发送20帧magic code，循环15次发送所有data code字段信息；Design the link layer data structure of the network intelligent communication system, which consists of two fields: magic code and data code. The data code field carries the SSID and password information of the wireless network access point. At the same time, in order to prevent the failure of network configuration information caused by packet loss, the information sender is set to send 20 frames of magic code and send all data code field information in a loop 15 times; 所述进行网络智能通信系统的运行分析控制管理包括：The operation analysis, control and management of the network intelligent communication system includes: 在开始网络智能通信系统配网前开启100ms定时器，在定时器中断服务函数中依次切换Wi-Fi信道，根据目的MAC地址设置Wi-Fi数据过滤条件，设置Wi-Fi模块为监听模式，接收802.11数据帧，每收到一帧数据时调用Config_Recv()函数进行数据解析，并判断此接口函数的返回值，如果返回Config_Locked则表示信道已经锁定了，需要关闭定时器以停止切换信道，如果返回Config_Complete则表示配网数据解析完成，关闭监听模式，取消过滤条件，并获取用户配置的SSID、密码和其它数据；Before starting the network configuration of the network intelligent communication system, start the 100ms timer, switch the Wi-Fi channels in turn in the timer interrupt service function, set the Wi-Fi data filtering conditions according to the destination MAC address, set the Wi-Fi module to monitoring mode, receive 802.11 data frames, call the Config_Recv() function for data analysis every time a frame of data is received, and judge the return value of this interface function. If Config_Locked is returned, it means that the channel has been locked, and the timer needs to be turned off to stop switching channels. If Config_Complete is returned, it means that the network configuration data analysis is completed, the monitoring mode is turned off, the filtering conditions are canceled, and the SSID, password and other data configured by the user are obtained; 所述进行网络智能通信系统的运行分析控制管理进一步包括：The operation analysis, control and management of the network intelligent communication system further includes: 对终端设备云平台的接入信息请求进行控制分析，根据服务器的域名使用DNS域名解析功能获取HTTP服务器的IP地址，根据域名解析获取的HTTP服务器的IP地址和端口号与服务器建立TCP连接，当连接失败时，每隔设定的时间尝试重新建立连接，直到尝试的次数达到设定的阈值，认为无法建立连接，不再与服务器建立连接，与服务器成功建立TCP连接后，根据应用程序的请求需求，以HTTP格式打包应用数据，向HTTP服务器提交请求；Control and analyze the access information request of the terminal device cloud platform, use the DNS domain name resolution function to obtain the IP address of the HTTP server according to the domain name of the server, establish a TCP connection with the server according to the IP address and port number of the HTTP server obtained by the domain name resolution, and when the connection fails, try to re-establish the connection at a set time interval until the number of attempts reaches the set threshold, and it is considered that the connection cannot be established, and no connection is established with the server. After successfully establishing a TCP connection with the server, package the application data in HTTP format according to the request requirements of the application, and submit a request to the HTTP server; MQTT客户端与服务器建立CONNECT连接时在CONNECT消息的可变头部中设置保活时间，其中保活时间定义了服务器收到客户端消息的最大时间间隔，使客户端在每个保活时间间隔内至少发送一条消息给服务器，如果这期间内没有业务相关的消息要发送，客户端则发送一个PINGREQ心跳请求消息给服务器，以保持和服务器的长连接，否则如果服务器在1.5个保活时间内都没有收到客户端的消息，则其视为客户端发送了一个DISCONNECT消息，并断开与客户端的连接；When the MQTT client establishes a CONNECT connection with the server, the keep-alive time is set in the variable header of the CONNECT message. The keep-alive time defines the maximum time interval for the server to receive messages from the client, so that the client sends at least one message to the server within each keep-alive time interval. If there is no business-related message to be sent during this period, the client sends a PINGREQ heartbeat request message to the server to maintain a long connection with the server. Otherwise, if the server does not receive a message from the client within 1.5 keep-alive times, it is regarded as the client sending a DISCONNECT message and disconnects the client. 所述进行网络智能通信系统的订阅存储处理包括：The subscription storage processing of the network intelligent communication system includes: 将网络智能通信系统的运行处理信息进行采集后，将其进行备份存储，供后续查阅分析处理。After the operation and processing information of the network intelligent communication system is collected, it is backed up and stored for subsequent reference, analysis and processing.
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