CN110505626B - Large-scale wifi network information pushing method and system - Google Patents

Large-scale wifi network information pushing method and system Download PDF

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Publication number
CN110505626B
CN110505626B CN201810469788.9A CN201810469788A CN110505626B CN 110505626 B CN110505626 B CN 110505626B CN 201810469788 A CN201810469788 A CN 201810469788A CN 110505626 B CN110505626 B CN 110505626B
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equipment
information
cloud server
capwap
server
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CN110505626A (en
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殷建儒
陇昕翼
朱晓龙
吴道远
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CHENGDU SKSPRUCE TECHNOLOGY Inc
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CHENGDU SKSPRUCE TECHNOLOGY Inc
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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
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • 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
    • H04L67/50—Network services
    • H04L67/55—Push-based network services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/08—Access security
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • H04L69/08—Protocols for interworking; Protocol conversion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/12—Application layer protocols, e.g. WAP [Wireless Application Protocol]
    • 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)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application provides a large-scale wifi network information pushing method and system, the method comprises the steps that a cloud server is configured with a CAPWAP transmission protocol, and an AC device is configured with a data transmission relay service module based on the CAPWAP transmission protocol; enabling the AC equipment to be online to a cloud server through a CAPWAP transmission protocol, and enabling the AP equipment to be online to the AC equipment; when the cloud server has new control, sending the configuration information and the control strategy information to the AC equipment through the CAPWAP transmission protocol; and then the AC equipment sends the configuration information and the control strategy information to the AP equipment through a data transmission relay service module, and the configuration information and the control strategy information take effect in the AP equipment. According to the method, the same data transmission protocol is deployed between the AC equipment and the cloud server, and the relay service module is configured in the AC equipment, so that the configuration information and the control strategy information are directly sent to the AP equipment from the cloud server, data transmission protocol conversion is not needed in the AC equipment, and multi-layer overhead and maintenance are avoided.

Description

Large-scale wifi network information pushing method and system
Technical Field
The application relates to the technical field of network communication, in particular to a large-scale wifi network information pushing method and system.
Background
A typical wifi network on a large scale generally includes an AP device layer (Access Point), an AC device layer (Access Controller, radio Access Controller), and a Controller layer (control and data presentation analysis layer), as shown in fig. 1. In fig. 1, the controller layer devices are centrally deployed at the cloud to become cloud devices, and the AP device layer devices and the AC device layer devices are deployed at the user side as the user side, where configuration information and control policy information of the user side devices are centrally managed by the cloud devices, and the cloud devices and the user side devices may cross the internet, and cross the multi-layer network address translation devices to connect with the user side AC devices and the AP devices geographically distributed in each area.
In the information pushing process of the wifi network shown in fig. 1, a device of the controller layer is generally called a cloud server or a controller server. The controller server firstly pushes the configuration file to the AC device, and the AC device issues the configuration file through a CAPWAP protocol between the AC device and the AP device and finally takes effect on the AP device. Limited by the applicability of the wifi network, information push between the controller server and the AC device usually adopts polling or persistent connection. The polling method continuously queries the controller server through the AC device, retrieves and acquires the new content pushed by the controller server, and only when the AC device queries that the controller server has the new push content, the polling method may acquire the new push content and issue the new push content to the AP device, so that the polling method has a defect of not being effective enough. In addition, whether the information pushed by the controller server can be validated at the AP device, and whether the validated message cannot be timely fed back to the controller server. Therefore, in order to solve the problem of timeliness of effectiveness, a persistent connection mode is usually adopted between the controller server and the AC device, that is, a long connection is maintained between the AC device and the controller server, and the controller server pushes new information to the AC device at any time, and further the AC device issues the new information to the AP device and becomes effective.
In the wifi network shown in fig. 1, one AC device may typically connect hundreds or even thousands of AP devices, depending on the capacity of the AC. The number of the AP devices is different according to the requirements of users, and the AP devices are frequently accessed to or quit from a wifi network, so that the controller server and the AC device maintain reliable connection between the AC device and the controller server through a NETCONF (network configuration protocol based on extensible markup language) transmission protocol or an HTTP (hypertext transfer protocol) transmission protocol to realize data communication; and the AC equipment and the AP equipment complete the processes of AP equipment discovery and access to the AC equipment through a CAPWAP protocol and realize data communication between the AC equipment and the AP equipment. It can be seen that, in a large-scale wifi network system, all AC devices need to configure firmware that converts information data under the NETCONF transmission protocol or the HTTP transmission protocol into information data under the CAPWAP protocol, however, since the AC devices and the AP devices are distributed in various areas, different areas may be separated by a long distance, and in actual use, the AC devices or the AP devices may continuously access or exit the wifi network, if information pushed by the controller server to the AP devices needs to be converted into protocol data by the AC devices before being sent to the AP devices, not only one layer of overhead and maintenance is added, but also problems of high resource consumption and high cost are faced.
Disclosure of Invention
The application provides a large-scale wifi network information pushing method and system, and aims to solve the problems that protocol conversion is needed, and one more layer of overhead and maintenance are needed in the existing wifi network information pushing method.
On one hand, the application provides a large-scale wifi network information pushing method, which comprises the following steps:
configuring a CAPWAP transmission protocol for the cloud server, and configuring a data transmission relay service module based on the CAPWAP transmission protocol for the AC equipment;
the AC equipment is online to the cloud server through the CAPWAP transmission protocol; the AP equipment is online to the AC equipment through the CAPWAP transmission protocol;
the cloud server sends configuration information and control strategy information to the AC equipment through the CAPWAP transmission protocol;
and the AC equipment sends the configuration information and the control strategy information to the AP equipment through the data transmission relay service module.
Optionally, the step of the AC device getting online to the cloud server through the CAPWAP transport protocol includes:
the AC equipment is accessed to a large-scale wifi network, and a cloud server configured with a CAPWAP transmission protocol in the wifi network is searched;
the AC equipment selects one of the cloud servers configured with the CAPWAP transmission protocol as a control server;
the AC equipment sends an access request to the control server, and the control server performs security authentication on the AC equipment after receiving the access request;
the control server sends initial configuration information to the AC device passing the security authentication.
Optionally, the step of selecting, by the AC device, one of the cloud servers configured with the CAPWAP transport protocol as a control server includes:
the AC equipment broadcasts a search message to a plurality of cloud servers configured with the CAPWAP transmission protocol;
the cloud server receiving the search message responds to the AC equipment in a unicast offer message mode;
and the AC equipment selects one of the cloud servers which respond to the offer message as a control server according to the received offer message.
Optionally, in the step that the AC device selects one of the responding cloud servers as the control server according to the received offer message, the AC device selects a first responding cloud server as the control server.
Optionally, the offer message includes the online number of the AC device corresponding to the cloud server; the step that the AC equipment selects one of the responded cloud servers as a control server according to the received offer message comprises the following steps:
the AC equipment extracts the online number of the AC equipment corresponding to the cloud server in each received offer message;
comparing the number of the online lines, and determining the priority of the cloud server, wherein the priority is the sequence from small to large according to the number of the online lines;
and the AC equipment selects the cloud server with the highest priority as the control server.
Optionally, an AP device management list is stored in the cloud server, where the AP device management list includes online status information and identification information of an AP device, and the method further includes:
after the AP equipment is on line to the AC equipment, the AC equipment reports an on-line event of the AP equipment to the cloud server through the CAPWAP transmission protocol;
the cloud server extracts identification information corresponding to the AP equipment according to the reported online event of the AP equipment, and queries the AP equipment management list according to the identification information;
and if the AP equipment is in the AP equipment management list, the cloud server generates configuration information and control strategy information corresponding to the AP equipment according to the online state information in the AP equipment management list.
Optionally, if the AP device is not in the AP device management list, the method further includes:
the cloud server extracts online state information corresponding to the AP equipment according to the reported online event of the AP equipment;
generating initial configuration information according to the online state information corresponding to the AP equipment; and adding the online state information and the identification information of the AP equipment in the AP equipment management list.
Optionally, for the AP device that has been brought to the AC device, the method further includes:
when the power of the AP equipment is changed, the AC equipment reports the power change event of the AP equipment to the cloud server through the CAPWAP transmission protocol;
and the cloud server reformulates a configuration and control strategy aiming at the AP equipment according to the reported power change event, and generates configuration information and control strategy information.
Optionally, the step of sending, by the AC device, the configuration information and the control policy information to the AP device through the data transmission relay service module includes:
after receiving the configuration information and the control strategy information, the AC equipment extracts control object information in the configuration information and the control strategy information, wherein the control object information comprises an IP address of AP equipment responding to the configuration information and the control strategy information;
determining the AP equipment responding to the configuration information and the control strategy information according to the control object information;
and sending the configuration information and the control strategy information to the AP equipment through a CAPWAP tunnel corresponding to the IP address.
On the other hand, this application still provides a extensive wifi network information push system, including the high in the clouds server, through the internet access the AC equipment and the connection of high in the clouds server AP equipment of AC equipment, be equipped with CAPWAP transport protocol module in the high in the clouds server, be equipped with the data transmission based on CAPWAP transport protocol in the AC equipment and relay service module, wherein:
the cloud server is configured with a CAPWAP transmission protocol and used for sending configuration information and control strategy information to the AC equipment through the CAPWAP transmission protocol;
the AC equipment is online to the cloud server through the CAPWAP transmission protocol, and is used for receiving the configuration information and the control strategy information sent by the cloud server and sending the configuration information and the control strategy information to the AP equipment through the data transmission relay service module.
According to the technical scheme, the application provides a large-scale wifi network information pushing method and system, and the method comprises the following steps: firstly, configuring a CAPWAP transmission protocol for a cloud server and configuring a data transmission relay service module based on the CAPWAP transmission protocol for AC equipment; enabling the AC equipment to be online to a cloud server through a CAPWAP transmission protocol; the AP equipment is online to the AC equipment through a CAPWAP transmission protocol; when the cloud server has new configuration or control content, sending configuration information and control strategy information to the AC equipment through a CAPWAP transmission protocol; and finally, the AC equipment sends the configuration information and the control strategy information to the AP equipment through a data transmission relay service module, and the configuration information and the control strategy information take effect in the AP equipment. According to the method, the same data transmission protocol is deployed between the AC equipment and the cloud server, the relay service module is configured in the AC equipment, the configuration information and the control strategy information are directly sent to the AP equipment from the cloud server, data transmission protocol conversion is not needed in the AC equipment, and the problems that protocol conversion is needed, and multiple layers of expenses and maintenance are needed in an existing large-scale wifi network information pushing method are solved.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a typical large-scale wifi network system structure;
fig. 2 is a schematic flowchart of an information pushing method according to the present application;
fig. 3 is a schematic diagram of a data flow relationship corresponding to an information pushing method in an embodiment of the present application;
fig. 4 is a schematic flow chart of an AP device online to an AC device in the embodiment of the present application;
fig. 5 is a schematic flowchart illustrating a process that an AC device is online to a cloud server in the embodiment of the present application;
fig. 6 is a schematic flowchart of selecting a control server by an AC device in an embodiment of the present application;
fig. 7 is a schematic flowchart illustrating a process of selecting a control server according to the priority of the cloud server in the embodiment of the present application;
fig. 8 is a schematic flowchart of a relay service provided by an AC device in an embodiment of the present application;
fig. 9 is a schematic flowchart of a method for controlling an online event of an AP device in an embodiment of the present application;
fig. 10 is a schematic diagram of an AP device control list in an embodiment of the present application;
fig. 11 is a flowchart illustrating a method for controlling an AP device power change event according to an embodiment of the present application;
fig. 12 is a schematic structural diagram of an information push system according to the present application.
Detailed Description
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as examples of systems and methods consistent with certain aspects of the application, as detailed in the claims.
In the technical scheme provided by the application, the large-scale wifi network refers to a network formed by a plurality of cloud servers (controller devices), AC devices and AP devices in different geographic positions. In a large-scale wifi network, a general cloud server is centrally deployed in one area, for example, the cloud server may be a main server of a main company located in beijing, or a cloud server provided by ari, tench, or the like. The AC devices, as radio access controllers, are distributed in different areas to provide respective radio access control services for the different areas. For example, the AC devices may be control devices of various branch offices, respectively located in Chengzhou, Guangzhou, Shanghai, and so on. As can be seen, the multiple AC devices are all connected to the cloud server through the corresponding networks. The AP device is a network device at the bottom layer as a wireless access point, and may be set in a specific working scenario. For example, a branch office at a capital site includes a plurality of departments, each of which is provided with at least one AP device for providing wireless access points for the current department.
Because the AC device and the cloud server are separated by a long distance, the actually established network connection may directly use the Internet (Internet) as a connection carrier, that is, the configuration information and the control policy information sent by the cloud server may be sent to the AC devices in different geographical locations through the Internet, and then the configuration information and the control policy information are sent to the AP device through the AC device, and the AP device makes a corresponding control policy adjustment according to the received configuration information and the control policy information, that is, the control policy adjustment takes effect on the AP device.
Fig. 2 is a schematic flow chart of the information push method according to the present application. As shown in fig. 2, the method for pushing wifi network information in a large scale provided by the present application includes the following steps:
s1: and configuring a CAPWAP transmission protocol for the cloud server, and configuring a data transmission relay service module based on the CAPWAP transmission protocol for the AC equipment.
In this embodiment, configuring the CAPWAP transport protocol for the cloud server and configuring the data transmission relay service module based on the CAPWAP transport protocol for the AC device may be implemented in a Software Defined manner, that is, the entire Network may adopt a Software Defined Network (SDN), and a control program of the CAPWAP transport protocol, that is, a CAPWAP server module, may be configured in the cloud server by Software, so as to establish a communication connection with the AC device configured with the CAPWAP transport protocol as well. Obviously, after the cloud server and the AC device are both configured with the CAPWAP transport protocol, data communication can be directly performed through the CAPWAP protocol, that is, the configuration information and the control policy information sent by the cloud server are transmitted to the AC device through the CAPWAP protocol, and similarly, the operation state information or the network event reported by the AC device can also be reported to the cloud server through the CAPWAP protocol, so as to jointly control the whole wifi network.
The AC equipment is also provided with a data transmission relay service module based on the CAPWAP transmission protocol besides the CAPWAP transmission protocol. As shown in fig. 3, a relay service module, i.e., a CAPWAP relay module, may be provided in the AC device in a software-defined manner. By configuring the relay service module in the AC device, the AC device can directly transmit the corresponding configuration information and control policy information to the AP device after receiving the configuration information and control policy information of the cloud server for the AP device, without performing protocol conversion. It should be noted that, in the technical solution provided in the present application, a data transmission hardware device, such as a network port, a data transmission device, a relay service device, etc., of the CAPWAP protocol may also be set in the cloud server and the AC device, so as to configure the CAPWAP transmission protocol for the cloud server and configure the data transmission relay service module based on the CAPWAP transmission protocol for the AC device.
S2: the AC equipment is online to the cloud server through the CAPWAP transmission protocol; and the AP equipment is online to the AC equipment through the CAPWAP transmission protocol.
In this embodiment, after configuring the CAPWAP transport protocol for the cloud server and configuring the relay service module for the AC device, a corresponding data communication connection needs to be established in the wifi network. Since the CAPWAP protocol is a communication protocol based on a long connection, such a long connection needs to be established between the AC device and the cloud server, and between the AP device and the AC device. Obviously, to establish a perfect wifi network, the AC device needs to be brought online to the cloud server, and the AP device needs to be brought online to the AC device.
As in the prior art, the AP device may be directly connected to the AC device via the CAPWAP protocol, as shown in fig. 4, in the technical solution provided in the present application, the connection of the AP device to the AC device via the CAPWAP transmission protocol may be further implemented by:
s21: after the AP equipment is accessed to the large-scale wifi network system, searching the AC equipment in an area corresponding to an access point in the large-scale wifi network system;
s22: the AP equipment sends an access request to the AC equipment;
s23: after the AC equipment receives the access request, the AC equipment carries out security authentication on the AP equipment;
s24: and the AC equipment sends initial configuration information to the AP equipment which passes the security authentication.
In this embodiment, because a new AP device may be continuously accessed in the entire network, and for a geographic area, there may be a situation where multiple AC devices are located in the same area, when in actual use, when a new AP device is accessed to the wifi network, it is necessary to search for an AC device that the AP device can connect to first. In order to exert the control efficiency of the AC device, the range in which the AP device searches for the AC device may be all AC devices within the current area range corresponding to the access point of the AP device, so that the connection between the AP device and the AC device is prevented from spanning a long distance, and the influence of the data transmission process on configuration and control is reduced.
After the AP device searches for the AC device in the area corresponding to the access point, the AP device sends an access request to the searched AC device, and further, due to the CAPWAP protocol, the AP device may send an access request to the searched AC devices simultaneously in the form of a broadcast access request message. Therefore, after the AC equipment receives the access request, the AP equipment is subjected to security authentication, initial configuration information is sent to the AP equipment passing the security authentication, and the AP equipment is enabled to be on-line to the AC equipment.
In some embodiments of the application, since both the AC device and the cloud server are configured with the CAPWAP protocol, the AC device needs to be online to the cloud server. As shown in fig. 5, the step of the AC device logging on to the cloud server through the CAPWAP transport protocol may further include:
s25: the AC equipment is accessed to a large-scale wifi network, and a cloud server configured with a CAPWAP transmission protocol in the wifi network is searched;
s26: the AC equipment selects one of the cloud servers configured with the CAPWAP transmission protocol as a control server;
s27: the AC equipment sends an access request to the control server, and the control server performs security authentication on the AC equipment after receiving the access request;
s28: the control server sends initial configuration information to the AC device passing the security authentication.
In this embodiment, after the AC device is accessed to the large-scale wifi network, the cloud server configured with the CAPWAP transport protocol in the wifi network is searched, and then one of the searched servers is selected as the control server, and an access request is sent to the control server. And after receiving the access request, the control server performs security authentication on the AC equipment sending the access request, and if the AC equipment passes the security authentication, the AC equipment is successfully on-line to the cloud server.
It should be noted that, in the technical solution provided in the present application, the initial configuration information includes information such as an IP address or an IP address of a DNS service, a lease date, and a gateway address. The control server may further send initial configuration information to the AC device that passes the security authentication through a CAPWAP transport tunnel.
Further, as shown in fig. 6, the step of selecting, by the AC device, one of the cloud servers configured with the CAPWAP transport protocol as a control server includes:
s261: the AC equipment broadcasts a search message to a plurality of cloud servers configured with the CAPWAP transmission protocol;
s262: the cloud server receiving the search message responds to the AC equipment in a unicast offer message mode;
s263: and the AC equipment selects one of the cloud servers which respond to the offer message as a control server according to the received offer message.
In this embodiment, the AC device first discovers the cloud server in the wifi network in a broadcast search (discovery) message manner, and the cloud server that receives the search message may respond to the AC device with a unicast offer (request) message. After receiving the response, the AC device selects one of the cloud servers that responded as the control server.
The specific selection of which cloud server is used as the control server can be seen in the following ways: and the AC equipment selects a first responding cloud server as the control server in the step of selecting one of the responding cloud servers as the control server according to the received offer message. In the scheme, because the first responding cloud server is usually most smoothly in communication connection with the AC device or is closer to the AC device, the first responding cloud server is used as the control server, so that a good communication connection relationship between the control server and the cloud device can be ensured, and a large data delay generated when the control server sends the configuration information and the control policy information is avoided.
In addition, as shown in fig. 7, the AC device may further select a control server according to the received offer packet by the following steps, that is:
s2631: the AC equipment extracts the online number of the AC equipment corresponding to the cloud server in each received offer message;
s2632: comparing the number of the online lines, and determining the priority of the cloud server, wherein the priority is the sequence from small to large according to the number of the online lines;
s2633: and the AC equipment selects the cloud server with the highest priority as the control server.
In this embodiment, the offer message includes the online number of the AC device corresponding to the cloud server. Because a plurality of AC devices are simultaneously online under each cloud server, for one cloud server, the larger the number of online AC devices is, the larger the corresponding operating load is, and the more likely data congestion or network delay is caused. Therefore, in this embodiment, the AC device may extract the online number of the AC devices at the current time in the cloud servers that respond through the offer message, and determine the cloud server with the minimum online number of the AC devices at the current time by comparing the online number of the AC devices in each cloud server that responds, i.e., select a cloud server with the minimum load as the control server from the plurality of cloud servers that respond, thereby fully utilizing each cloud server, balancing the load among the servers, and maintaining the overall efficient operation of the cloud servers.
Further, after the online number of the AC devices of the cloud servers is compared, the priority among the cloud servers can be determined according to the online number of the AC devices corresponding to each cloud server. For example, in the cloud server that responds to the offer message, it may be determined that the server 1 currently has 13 AC devices online, the server 2 currently has 7 AC devices online, the server 3 currently has 25 AC devices online, and the server 4 currently has 16 AC devices online, where the priorities of the servers are as follows: server 2 > server 1 > server 4 > server 3. When the AC device selects the control server, the server 2 is preferentially selected as the control server. And when the communication connection between the AC equipment and the server 2 can not be established, namely the AC equipment can not be on line to the server 2, the server 1 is selected as the control server, and so on until the AC equipment is successfully on line to the cloud server.
S3: and the cloud server sends configuration information and control strategy information to the AC equipment through the CAPWAP transmission protocol.
According to the technical scheme, after the AP equipment is on line to the AC equipment and the AC equipment is on line to the cloud server, the configuration information and the control strategy information can be sent through a CAPWAP protocol. The cloud server generates corresponding configuration information and control policy information according to the running state of the accessed AP equipment or AC equipment, and can directly generate a configuration information and control policy information mode based on a CAPWAP protocol in the cloud service for facilitating information transmission, and then send the configuration information and control policy information mode to the AC equipment through the CAPWAP protocol. It should be noted that, in the technical solution provided by the present application, the configuration information and the control policy information are basic operation parameters and control methods set by the cloud server for controlling the AP device or the AC device, and the parameters and the control methods may take effect in the AP device or the AC device, so that the AP device or the AC device performs data transmission according to the specification of the cloud server.
It should be understood that when the operating conditions of the AP device or the AC device connected to the wifi network change, the cloud server reformulates the configuration information or the control policy information according to the changed operating conditions. For example, a new AP device is accessed to a wifi network, and the cloud server needs to allocate an IP address to the newly accessed AP device and make configuration information and control policy information for the newly accessed AP device. For another example, when the AP device exits from the wifi network, the cloud server may release the bandwidth of the corresponding network connection path and withdraw the IP address corresponding to the AP device exiting from the wifi network. For example, when the operating load condition of the AP device changes, that is, the power of the AP device changes, the cloud server needs to make a reasonable control policy again according to the power change of the AP device.
S4: and the AC equipment sends the configuration information and the control strategy information to the AP equipment through the data transmission relay service module.
In this embodiment, the configuration information and the control policy information sent by the cloud server may include two types, one type is the configuration information and the control policy information for the AC device, and the other type is the configuration information and the control policy information for the AP device, after the configuration information and the control policy information are generated by the cloud server, the generated information is sent to the AC device through a CAPWAP protocol, and the AC device may determine the received information and determine a control object thereof. If the information is information aiming at the AC equipment, corresponding control response is directly made according to the received information content, so that the configuration information and the control strategy information take effect in the AC equipment; if the received information is the configuration information and the control policy information for the AP device, the AC device is required to transmit the configuration information and the control policy information to the AP device through the data transmission relay service module, and the AP device makes a corresponding control response according to the received configuration information and the control policy information, so that the AP device becomes effective.
According to the technical scheme of the embodiment, if the configuration information and the control policy information formulated by the cloud server are for the AP device, the AC device does not further process the configuration information and the control policy information, and the information received by the AC device is directly in a form based on the CAPWAP protocol, so that the AC device can directly transmit the configuration information and the control policy information to the AP device through the relay service module, the whole information transmission process does not involve conversion of the transmission protocol, and the relay service only needs to extract the target AP device from the transmitted information and then send the received information to the target AP device, and the relay service is much simpler than protocol conversion service, so that the technical scheme provided by the application avoids extra overhead and maintenance caused by deploying the protocol conversion module in the AC device.
Further, as shown in fig. 8, the step of sending, by the AC device, the configuration information and the control policy information to the AP device through the data transmission relay service module includes:
s401: after receiving the configuration information and the control strategy information, the AC equipment extracts control object information in the configuration information and the control strategy information, wherein the control object information comprises an IP address of AP equipment responding to the configuration information and the control strategy information;
s402: determining the AP equipment responding to the configuration information and the control strategy information according to the control object information;
s403: and sending the configuration information and the control strategy information to the AP equipment through a CAPWAP tunnel corresponding to the IP address.
In this embodiment, after receiving the configuration information and the control policy information, the AC device determines the control object information by extracting the received information, and further determines the AP device that responds to the configuration information and the control policy information. Further, the IP address of the corresponding AP device may be extracted from the configuration information and the control policy information, and after the IP address of the AP device is determined, a target AP device is determined in all the AP devices on line in the current AC device, and finally, the configuration information and the control policy information are sent to the target AP device through the CAPWAP tunnel under the IP address corresponding to the target AP device. Since the AP device may maintain a long connection between the AP device and the AC device through the CAPWAP protocol after the AP device is online to the AC device, where the long connection is referred to as a CAPWAP tunnel, in this embodiment, after the AC device determines the target AP device, the configuration information and the control policy information may be directly sent to the target AP device through the CAPWAP tunnel between the AC device and the AP device. The information transmission is directly completed through the relay service, so that the transmission efficiency of the information data is greatly improved.
Further, in some embodiments provided in the present application, an AP device management list is stored in the cloud server, where the AP device management list includes online status information and identification information of an AP device, as shown in fig. 9, and the method further includes:
s411: after the AP equipment is online to the AC equipment, the AC equipment reports an online event of the AP equipment to the cloud server through the CAPWAP transmission protocol;
s412: the cloud server extracts identification information corresponding to the AP equipment according to the reported online event of the AP equipment, and queries the AP equipment management list according to the identification information;
s413: and if the AP equipment is in the AP equipment management list, the cloud server generates configuration information and control strategy information corresponding to the AP equipment according to the online state information in the AP equipment management list.
Further, if the AP device is not in the AP device management list, the method further includes:
s414: the cloud server extracts online state information corresponding to the AP equipment according to the reported online event of the AP equipment;
s415: generating initial configuration information according to the online state information corresponding to the AP equipment; and adding the online state information and the identification information of the AP equipment in the AP equipment management list.
In this embodiment, because the large-scale wifi network can have the AP device to access or exit at any time during operation, for the AP device accessing the wifi network, the access AP device needs to be configured through the cloud server. In order to quickly configure the AP device, an AP device management list may be stored in the cloud server in advance, where the AP device management list may include identification information capable of distinguishing each AP device, such as an AP device identification serial number, and online status information of each AP device, for example, online/offline, current power condition, and the like. For further management, configuration information and control policy information of each AP device, and geographical location information of each AP device may also be stored in the AP device management list, as shown in fig. 10.
When the AP equipment is accessed to the large-scale wifi network, the AC equipment firstly carries out security authentication on the AP equipment, if the AP equipment requesting access passes the security authentication, a long connection based on CAPWAP is established between the AC equipment and the AP equipment, namely the AP equipment is successfully on-line to the AC equipment. After the AP equipment is on line to the AC equipment, the AC equipment reports an on-line event of the AP equipment to a cloud server through a CAPWAP transmission protocol, and requests the cloud server to make configuration information and control strategy information for the AP equipment which is just accessed to the network.
After receiving the online event reported by the AC device, the cloud server may extract the AP device identification information, such as an identification serial number, of the access network from the reported event, and then perform matching in the AP device management list through the identification information of the AP device. When the AP device management list has the extracted AP device identification information, that is, the AP device currently accessing the network has connected to the current cloud server, the AP device management list may directly extract the corresponding configuration information and control policy information from the AP device management list according to the online status information of the AP device. And finally, sending the configuration information and the control strategy information corresponding to the AP equipment which is accessed to the network currently to the AP equipment through a data transmission relay service module in the AC equipment so as to take effect in the AP equipment.
In this embodiment, if the AP device identification information currently accessing the wifi network is not matched in the AP device management list, it is indicated that the AP device currently accessing the wifi network may not access the current cloud server, and in this case, the cloud server may extract online status information corresponding to the AP device through the received online event, and then formulate an initial configuration information according to the extracted online status information, and send the initial configuration information to the AP device, so that the AP device can normally operate.
After the initial configuration information is sent to the AP device accessing the wifi network, the cloud server may further add information corresponding to the current AP device in the AP device management list. Namely, the identification information, the online status information and the formulated initial configuration information of the current AP device are stored in the form of a stored AP device control list, so that when the AP device is accessed to the wifi network again, the identification information, the online status information and the formulated initial configuration information can be directly extracted from the AP device control list. It should be noted that the initial configuration information described in this embodiment is different from the configuration information and the control policy information mentioned in the foregoing only in name, and the data form and the contained content are the same, that is, the AP device can obtain the configuration and the control policy according to the corresponding information.
Further, for the AP device that has been brought online to the AC device, as shown in fig. 11, the method further includes the steps of:
s421: when the power of the AP equipment is changed, the AC equipment reports the power change event of the AP equipment to the cloud server through the CAPWAP transmission protocol;
s422: and the cloud server reformulates a configuration and control strategy aiming at the AP equipment according to the reported power change event, and generates configuration information and control strategy information.
When the power of the AP device changes, for example, when the number of terminal devices connected to the wifi network through the current AP device is large, the cloud server often needs to adjust a control strategy of the AP device according to the operating condition of the AP device after the power changes. Therefore, in this embodiment, the power change event of the AP device may be reported to the cloud server through the AC device, the cloud server may formulate a control policy suitable for the changed power condition by analyzing the reported power change event, generate configuration information and control policy information, and send the configuration information and the control policy information to the AC device, and the AC device sends the configuration information and the control policy information to the AP device through the CAPWAP relay module, thereby adjusting the control scheme of the AP device.
It should be noted that, in the operation process of the actual wifi network, except for events such as access of the AP device to the network and power change of the AP device, the cloud server needs to follow the actual online state to make the configuration and control policy again, and other situations may also include situations where the cloud server needs to adjust or re-make the configuration and control policy. For example, active maintenance of the cloud server, unified control and adjustment of the cloud server for the entire network, and a new control scheme performed by a network maintenance worker for a specific area all need to issue new configuration information and control policy information from the cloud server. Regardless of the content of the transmitted configuration information and control policy information, the transmission of the configuration information and control policy information can be realized by the technical scheme provided by the application. Therefore, as long as in an actual network operating environment, the configuration information and the control policy information are issued to the AC device through the cloud server, and then the configuration information and the control policy information are sent to the AP device through the data transmission relay service module in the AC device, so that the scheme taking effect in the AP device all belongs to the protection scope of the present invention.
Based on the information pushing method, the application further provides a large-scale wifi network information pushing system, as shown in fig. 12, the system comprises a cloud server, an AC device connected with the cloud server through a network, and an AP device connected with the AC device. In this embodiment, the number of the cloud server, the AC devices, and the AP devices may be multiple, where the cloud server is deployed together in a centralized manner, such as a head office location or a cloud, the multiple AC devices are disposed in different geographic locations and collectively serve as a lower layer device of the cloud server, and the AP device serves as a lower layer device and is deployed in each geographic location within a control range of each AC device.
The AC equipment and the cloud server can establish communication connection through the Internet, so that the AC equipment in each geographic position can be uniformly online to the cloud server. The AP device and the AC device may be connected through a local area network or may be connected through the internet, but in order to facilitate deployment of the AP device and ensure stability of data transmission, the AP device and the AC device are usually connected through the local area network.
The cloud server is provided with a CAPWAP transmission protocol module (CAPWAP server), namely the cloud server is provided with a corresponding CAPWAP transmission protocol module in a software and/or hardware mode. The AC equipment is also provided with a CAPWAP transmission protocol module and a data transmission relay service module based on the CAPWAP transmission protocol. The CAPWAP transmission protocol module in the AC device can be used for carrying out data communication with the AP device and the cloud server through the CAPWAP transmission protocol, and the data transmission relay service module can provide relay service of data transmission in the AC device.
Specifically, the method comprises the following steps: the cloud server is configured with a CAPWAP transmission protocol and used for sending configuration information and control strategy information to the AC equipment through the CAPWAP transmission protocol. In addition, the cloud server may be further configured to formulate configuration information and control policy information for the AC device or the AP device according to online status information of the AC device or the AP device connected thereto. Further, a controller (controller) and a memory are further arranged in the cloud server, wherein the controller is used for controlling generation and transmission of configuration information and control policy information, and the memory can be used for storing basic information of each layer of equipment in the current wifi network, such as AC equipment information, AP equipment information, position information corresponding to each layer of equipment in the network, network operation state parameters and the like, and can also be used for storing control data of the AP equipment control list and the like.
The AC equipment is online to the cloud server through the CAPWAP transmission protocol, and is used for receiving the configuration information and the control strategy information sent by the cloud server and sending the configuration information and the control strategy information to the AP equipment through the data transmission relay service module. After the AC equipment is on line to the cloud server, the AC equipment can be used as a controller for communication connection between the AP equipment and the cloud server, so that the configuration information and the control strategy information sent by the cloud server are sent to the AC equipment firstly, and then the AC equipment sends the configuration information and the control strategy information to the AP equipment through the relay service. In addition, the AC device is further configured to control the AP device to go online, that is, after the AP device accesses the network, perform security authentication on the AP device and perform preliminary configuration on the AP device accessing the network, so that the AP device can establish a communication connection relationship with the cloud server.
According to the technical scheme, the application provides a large-scale wifi network information pushing method and system, and the method comprises the following steps: firstly, a CAPWAP transmission protocol is configured for a cloud server, and a data transmission relay service module based on the CAPWAP transmission protocol is configured for AC equipment; enabling the AC equipment to be online to a cloud server through a CAPWAP transmission protocol; the AP equipment is online to the AC equipment through a CAPWAP transmission protocol; when the cloud server has new configuration or control content, sending configuration information and control strategy information to the AC equipment through a CAPWAP transmission protocol; and finally, the AC equipment sends the configuration information and the control strategy information to the AP equipment through a data transmission relay service module, and the configuration information and the control strategy information take effect in the AP equipment. According to the method, the same data transmission protocol is deployed between the AC equipment and the cloud server, and the relay service module is configured in the AC equipment, so that the configuration information and the control strategy information are directly sent to the AP equipment by the cloud server, data transmission protocol conversion is not needed in the AC equipment, and the problems that protocol conversion is needed, and multiple layers of overhead and maintenance are needed in the existing large-scale wifi network information pushing method are solved.
The detailed description provided above is only a few examples under the general concept of the present application, and does not constitute a limitation to the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.

Claims (9)

1. A large-scale wifi network information pushing method is characterized by comprising the following steps:
configuring a CAPWAP transmission protocol for the cloud server, and configuring a data transmission relay service module based on the CAPWAP transmission protocol for the AC equipment;
the AC equipment is online to the cloud server through the CAPWAP transmission protocol; the AP equipment is online to the AC equipment through the CAPWAP transmission protocol;
the cloud server stores an AP device management list, the AP device management list comprises online state information and identification information of AP devices, and the method further comprises the following steps:
after the AP equipment is online to the AC equipment, the AC equipment reports an online event of the AP equipment to the cloud server through the CAPWAP transmission protocol;
the cloud server extracts identification information corresponding to the AP equipment according to the reported online event of the AP equipment, and queries the AP equipment management list according to the identification information;
if the AP equipment is in the AP equipment management list, the cloud server generates configuration information and control strategy information corresponding to the AP equipment according to the online state information in the AP equipment management list;
the cloud server sends configuration information and control strategy information to the AC equipment through the CAPWAP transmission protocol;
and the AC equipment sends the configuration information and the control strategy information to the AP equipment through the data transmission relay service module.
2. The information pushing method according to claim 1, wherein the step of the AC device getting online to the cloud server via the CAPWAP transport protocol comprises:
the AC equipment is accessed to a large-scale wifi network, and a cloud server configured with a CAPWAP transmission protocol in the wifi network is searched;
the AC equipment selects one of the cloud servers configured with the CAPWAP transmission protocol as a control server;
the AC equipment sends an access request to the control server, and the control server performs security authentication on the AC equipment after receiving the access request;
the control server sends initial configuration information to the AC device passing the security authentication.
3. The information pushing method according to claim 2, wherein the step of the AC device selecting one of the cloud servers configured with the CAPWAP transport protocol as the control server comprises:
the AC equipment broadcasts a search message to a plurality of cloud servers configured with the CAPWAP transmission protocol;
the cloud server receiving the search message responds to the AC equipment in a unicast offer message mode;
and the AC equipment selects one of the cloud servers responding to the offer message as a control server according to the received offer message.
4. The information pushing method according to claim 3, wherein in the step of selecting one of the responding cloud servers as the control server according to the received offer message, the AC device selects a first responding cloud server as the control server.
5. The information pushing method according to claim 3, wherein the offer packet includes an online number of the AC devices corresponding to the cloud server; the step that the AC equipment selects one of the responding cloud servers as a control server according to the received offer message comprises the following steps:
the AC equipment extracts the online number of the AC equipment corresponding to the cloud server in each received offer message;
comparing the number of the online lines, and determining the priority of the cloud server, wherein the priority is the sequence from small to large according to the number of the online lines;
and the AC equipment selects the cloud server with the highest priority as the control server.
6. The information pushing method according to claim 1, wherein if the AP device is not in the AP device management list, the method further comprises:
the cloud server extracts online state information corresponding to the AP equipment according to the reported online event of the AP equipment;
generating initial configuration information according to the online state information corresponding to the AP equipment; and adding the online state information and the identification information of the AP equipment in the AP equipment management list.
7. The information pushing method according to claim 1, wherein for the AP device that has been brought online to the AC device, the method further comprises:
when the power of the AP equipment is changed, the AC equipment reports the power change event of the AP equipment to the cloud server through the CAPWAP transmission protocol;
and the cloud server reformulates a configuration and control strategy aiming at the AP equipment according to the reported power change event, and generates configuration information and control strategy information.
8. The information pushing method according to claim 1, wherein the step of the AC device sending the configuration information and the control policy information to the AP device through the data transmission relay service module includes:
after receiving the configuration information and the control strategy information, the AC equipment extracts control object information in the configuration information and the control strategy information, wherein the control object information comprises an IP address of AP equipment responding to the configuration information and the control strategy information;
determining the AP equipment responding to the configuration information and the control strategy information according to the control object information;
and sending the configuration information and the control strategy information to the AP equipment through a CAPWAP tunnel corresponding to the IP address.
9. The utility model provides a extensive wifi network information push system, its characterized in that includes the high in the clouds server, connects through the network the AC equipment of high in the clouds server and connect the AP equipment of AC equipment, be equipped with CAPWAP transport protocol module in the high in the clouds server, be equipped with the data transmission relay service module based on CAPWAP transport protocol in the AC equipment, wherein:
an AP (access point) device management list is stored in the cloud server, and the AP device management list comprises online state information and identification information of AP devices;
the cloud server is configured with a CAPWAP transmission protocol and used for sending configuration information and control strategy information to the AC equipment through the CAPWAP transmission protocol;
the AC equipment is online to the cloud server through the CAPWAP transmission protocol, and is used for receiving the configuration information and the control strategy information sent by the cloud server and sending the configuration information and the control strategy information to the AP equipment through the data transmission relay service module.
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