CN112601239A

CN112601239A - Method for cooperative work of multiple sets of wireless mesh networks

Info

Publication number: CN112601239A
Application number: CN202011462272.5A
Authority: CN
Inventors: 邓宇; 刘继明; 金宁; 陈浮; 刘松
Original assignee: ITIBIA TECHNOLOGIES (SUZHOU) CO LTD
Current assignee: ITIBIA TECHNOLOGIES (SUZHOU) CO LTD
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-04-02
Anticipated expiration: 2040-12-11
Also published as: CN112601239B

Abstract

The invention relates to a method for cooperative work of a plurality of sets of wireless mesh networks, which comprises the following steps that firstly, a main device of a single set of mesh registers in a management server, and the mode of acquiring the IP address of the management server comprises manual configuration and is acquired through a DHCP option mode and a DNS domain name resolution mode; then, the single set of mesh main equipment sends an access application to the management server, and the management server decides whether the equipment can be accessed or not by judging the self-defined parameters and executes an access process; for accessible equipment, the management server issues required configuration for the accessed equipment, the main equipment applied to a single set of Mesh is configured, and then the main equipment of the single set of Mesh synchronizes the configuration to other Mesh nodes; finally, all the devices enter a normal operation state, and event notification and configuration updating are carried out through reporting and sending messages, so that normal operation management work is carried out; and integrating a plurality of sets of wireless mesh networks.

Description

Method for cooperative work of multiple sets of wireless mesh networks

Technical Field

The invention relates to a method for cooperative work of multiple sets of wireless mesh networks, belonging to the technical field of wireless local area network operation management.

Background

The wireless mesh network consists of mesh routers and mesh clients, wherein the mesh routers form a backbone network and are connected with a wired internet network to provide multi-hop wireless internet connection for the mesh clients.

A wireless Mesh network (wireless Mesh network), also called a "multi-hop" network, is a new wireless network technology that is completely different from a conventional wireless network.

In a conventional Wireless Local Area Network (WLAN), each client accesses the network through a wireless link connected to an ap (access point), forming a local bss (basic Service set). Users must first access a fixed Access Point (AP) if they want to communicate with each other, and this network structure is called a single hop network.

In the wireless Mesh network, any wireless device node can simultaneously serve as an AP and a router, each node in the network can send and receive signals, and each node can directly communicate with one or more peer nodes.

The greatest benefits of such a network structure are: if the nearest AP is congested due to excessive traffic, the data may be automatically rerouted to a neighboring node with a smaller traffic volume for transmission. And so on, the data packet can be further routed to the next node closest to the data packet for transmission according to the situation of the network until the final destination is reached. Such an access method is a multi-hop access.

However, the current mainstream wireless mesh network has several problems in terms of layout and use:

firstly, the method comprises the following steps: the hop count of the mesh network is limited, and basically, the bandwidth of the mesh network is reduced by about half every hop, so that the network hop count cannot exceed 2 hops under the general condition;

secondly, the method comprises the following steps: the mesh network ad hoc network has strict regulations, a small local area network is arranged in the mesh network ad hoc network and is communicated with the Internet through a main gateway, and only one main gateway causes an outlet bottleneck;

thirdly, the method comprises the following steps: due to the limited number of network hops, the number of devices of the mesh ad hoc network is limited, so that the use scene is limited, the mesh ad hoc network cannot be applied to medium and large network scenes, and the mesh ad hoc network can only be used as a single small network.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a method for cooperative work of multiple sets of wireless mesh networks.

The purpose of the invention is realized by the following technical scheme:

the method for the cooperative work of the multiple sets of wireless mesh networks is characterized in that: the method comprises the following steps:

1) in the discovery stage, the main equipment of the single set of mesh finds the management server through the broadcast message;

2) registering equipment, wherein a main device of a single set of mesh registers to a management server through a unicast message;

3) configuring equipment, wherein a management server automatically judges whether the equipment can be accessed, and issues required configuration for the equipment which can be accessed;

issuing the required configuration for the main equipment of a single set of mesh;

the master device of the Mesh synchronizes the configuration to other Mesh nodes;

4) and (4) running state and configuration updating, entering a normal running state, keeping the equipment online through the heartbeat message, and simultaneously performing event notification and configuration updating according to user requirements.

Further, in the method for cooperative work of multiple sets of wireless mesh networks, in step 1), a single set of mesh networks which can only operate independently is registered in the management server, and the modes for searching the management server include a dynamic searching mode and a static configuration mode.

Further, in the method for cooperative work of multiple sets of wireless mesh networks, the dynamic searching mode adopts a DHCP option parameter acquisition mode and a DNS domain name resolution mode to acquire the IP address of the management server;

a DHCP option parameter acquisition mode, namely acquiring an IP address of a management server carried in DHCP option when a single set of mesh network main equipment acquires the IP address, wherein the IP of the management server is preset by configuring the DHCP server;

a DNS domain name resolution mode, namely a DNS server supports resolution of a specific domain name, and the resolution result is an IP address of a management server; after the main equipment of the single set of mesh network is started, automatically sending the query of a specific domain name, thereby obtaining the IP address of the management server;

and a static configuration mode, namely configuring the IP address of the management server to a single set of mesh network main equipment by adopting a web and telnet configuration mode.

Further, in the method for cooperative work of multiple sets of wireless mesh networks, step 2), the management server automatically determines whether the device can be accessed, and executes an access process;

the management server judges whether the equipment can be accessed or not, wherein the judgment comprises the parameters of the equipment model, the equipment manufacturer, the serial number and the access key, the management equipment judges through the parameters, if the access is allowed, the management equipment sends access OK and enters the next stage;

for the device which is not allowed to be accessed by the management server, the device is prevented from repeatedly applying for access, so that pressure is applied to the server, and the mode and time of the blacklist are set according to actual requirements.

Further, the method for cooperative work of multiple sets of wireless mesh networks adopts UDP encapsulation messages, UDP internal messages are used as a private protocol, and the contents are as follows: version number: 1 byte; message type: 1 byte; and (3) key butt joint: 16 bytes, and the cipher appointed by both parties is encrypted by AES; the product model is as follows: 4 bytes; software version number: 8 bytes; sequence number: 8 bytes.

Further, in the method for cooperative work of multiple sets of wireless mesh networks, in step 3), for accessible devices, the configuration required is issued:

the method comprises the steps that a main device of a single set of mesh network applies for obtaining configuration to a management server, meanwhile, model information of the main device is reported, and the management server issues running configuration corresponding to the device by inquiring the model and the characteristic of the device;

the master device of the single set of mesh network receives the relevant operation configuration, applies the configuration to the master device and simultaneously issues the configuration to other devices in the mesh network.

Further, the method for cooperative work of multiple sets of wireless mesh networks adopts UDP encapsulation messages, UDP internal messages are used as a private protocol, and the contents are as follows: version number: 1 byte; message type: 1 byte; and (3) key butt joint: 16 bytes, and the cipher appointed by both parties is encrypted by AES; the configuration type is as follows: 2 bytes; configuration length: 2 bytes; the configuration content is as follows: a variable length;

the configuration message adopts a standard TLV mode, and a plurality of configuration items can be superposed at the same time.

Further, in the method for cooperative work of multiple sets of wireless mesh networks, step 4), each single set of mesh network enters a normal working state and needs two types of message transmission;

when the single set of mesh network is abnormal or has an event, the single set of mesh network needs to inform a management server, at the moment, the master device of the single set of mesh network actively sends an event report message to the management server, and the message defines various types of formats including alarm, data statistics and event notification types by a user;

when the management server needs to update the configuration or trigger the operation, the management server adopts the configuration update message in operation to send the message to the main equipment of a single set or all mesh networks, and the main equipment analyzes and processes the message and makes corresponding operation.

Compared with the prior art, the invention has obvious advantages and beneficial effects, and is embodied in the following aspects:

the invention provides a method for multiple sets of wireless mesh networks to work cooperatively, which realizes multiple sets of mesh unified access SSID, time strategy, access strategy, authentication strategy and the like, thereby integrating multiple sets of wireless mesh networks, providing convenience for network management and simultaneously providing necessary conditions for users to switch among multiple mesh networks;

the defects of the existing wireless mesh network are overcome, and the existing single mesh network can only cover a small-range scene and can only be used independently; the cooperative management method can coordinate cooperative work, unified action and configuration of a plurality of sets of mesh networks, and user roaming and access can also be processed in a unified manner, so that the working range of the mesh networks is greatly expanded, and the cross-network cloud management capability is provided.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description.

Drawings

FIG. 1: the flow chart of the invention is schematic;

FIG. 2: the mesh master device is accessed to a message structure schematic diagram of a management server;

FIG. 3: and the management server and the mesh main equipment carry out management type interaction.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, specific embodiments will now be described in detail.

The invention relates to a method for cooperative work of multiple sets of wireless mesh networks, which comprises the following steps that firstly, a main device of a single set of mesh registers in a management server, and the mode of acquiring the IP address of the management server comprises manual configuration and is acquired through a DHCP option mode and a DNS domain name resolution mode; then, the single set of mesh main equipment sends an access application to the management server, and the management server decides whether the equipment can be accessed or not by judging the self-defined parameters and executes an access process; for the accessible equipment, the management server issues required configurations for the accessed equipment, the configurations are applied to the main equipment of a single set of Mesh, and then the main equipment of the single set of Mesh synchronizes the configurations to other Mesh nodes; and finally, all the equipment enters a normal operation state, event notification and configuration updating are carried out through reporting and sending messages, and normal operation management work is carried out.

As shown in fig. 1, the method for cooperative work of multiple sets of wireless mesh networks specifically includes the following steps:

initiating message registration to a management server by the main equipment of the single set of mesh network, wherein the precondition is that the main equipment of the single set of mesh network obtains the IP address of the management server by some modes;

registering a single set of mesh network which can only operate independently in a management server, wherein the modes for searching the management server comprise a dynamic searching mode and a static configuration mode;

the dynamic searching mode adopts a DHCP option parameter acquisition mode and a DNS domain name resolution mode to acquire the IP address of the management server;

a static configuration mode, namely configuring the IP address of the management server to a single set of mesh network main equipment by adopting a web and telnet configuration mode;

other dynamic or static ways of obtaining the IP address of the management server;

meanwhile, for the interaction between the main equipment of a single set of mesh network and the management server, a self-defined private protocol is used for processing, a connectionless UDP (user datagram protocol) mode is used for encapsulating messages, and meanwhile, TLV (type, length, value) modes are used for defining messages to be transmitted;

the traditional single set of mesh network is operated independently without a management mechanism, the invention can manage the cooperative work of a plurality of sets of mesh networks, and the distributed equipment management is carried out through the conventional message interaction modes such as TCP/UDP and the like;

the management server automatically judges whether the equipment can be accessed or not, and executes an access process;

encapsulating the message in a UDP mode, and simultaneously internally defining the message to be transmitted in a TLV (type, length, value) mode;

as shown in fig. 2, UDP encapsulation is adopted, and the UDP internal packet is used as a private protocol, and the contents are as follows: version number: 1 byte; message type: 1 byte; and (3) key butt joint: 16 bytes, and the cipher appointed by both parties is encrypted by AES; the product model is as follows: 4 bytes; software version number: 8 bytes; sequence number: 8 bytes; others …;

for the device which is not allowed to be accessed by the management server, the device needs to be added into the blacklist for a period of time to prevent the device from repeatedly applying for access, so that pressure is caused on the server, and the mode and time of the blacklist are set according to actual requirements

for accessible devices, the required configuration is issued:

as shown in fig. 3, UDP encapsulation is adopted, and the UDP internal packet is used as a private protocol, and the contents are as follows: version number: 1 byte; message type: 1 byte; and (3) key butt joint: 16 bytes, and the cipher appointed by both parties is encrypted by AES; the configuration type is as follows: 2 bytes; configuration length: 2 bytes; the configuration content is as follows: a variable length;

the configuration message adopts a standard TLV mode, and a plurality of configuration items can be superposed at the same time;

the master device of the single set of mesh network receives the relevant operation configuration, applies the configuration to the master device and simultaneously issues the configuration to other devices in the mesh network;

4) the running state and the configuration updating are carried out, the normal running state is entered, the equipment is kept online through the heartbeat message, and meanwhile, the event notification and the configuration updating are carried out according to the requirements of users;

each single set of mesh network enters a normal working state and needs two types of message transmission;

when the management server needs to update the configuration or trigger the operation, the management server adopts the configuration update message in operation to send the message to the main equipment of a single set or all mesh networks, and the main equipment analyzes and processes the message and makes corresponding operation;

in summary, the present invention provides a method for cooperative work of multiple sets of wireless mesh networks, which implements unified access SSID, time policy, access policy, authentication policy, etc. of multiple sets of mesh networks, thereby integrating multiple sets of wireless mesh networks, providing convenience for network management, and providing necessary conditions for users to switch among multiple mesh networks.

It should be noted that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; while the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims

1. The method for the cooperative work of the multiple sets of wireless mesh networks is characterized in that: the method comprises the following steps:

2. The method for the cooperative work of the plurality of sets of wireless mesh networks according to claim 1, wherein: step 1), registering a single set of mesh network which can only operate independently in a management server, wherein the modes for searching the management server comprise a dynamic searching mode and a static configuration mode.

3. The method for the cooperative work of the plurality of sets of wireless mesh networks according to claim 2, wherein: the dynamic searching mode adopts a DHCP option parameter acquisition mode and a DNS domain name resolution mode to acquire the IP address of the management server;

4. The method for the cooperative work of the plurality of sets of wireless mesh networks according to claim 1, wherein: step 2), the management server automatically judges whether the equipment can be accessed, and executes an access process;

5. The method for the cooperative work of the plurality of sets of wireless mesh networks according to claim 4, wherein: UDP encapsulation messages are adopted, UDP internal messages are used as a private protocol, and the contents are as follows: version number: 1 byte; message type: 1 byte; and (3) key butt joint: 16 bytes, and the cipher appointed by both parties is encrypted by AES; the product model is as follows: 4 bytes; software version number: 8 bytes; sequence number: 8 bytes.

6. The method for the cooperative work of the plurality of sets of wireless mesh networks according to claim 1, wherein: step 3), for the accessible equipment, issuing the required configuration:

7. The method for the cooperative work of the plurality of sets of wireless mesh networks according to claim 6, wherein: UDP encapsulation messages are adopted, UDP internal messages are used as a private protocol, and the contents are as follows: version number: 1 byte; message type: 1 byte; and (3) key butt joint: 16 bytes, and the cipher appointed by both parties is encrypted by AES; the configuration type is as follows: 2 bytes; configuration length: 2 bytes; the configuration content is as follows: a variable length;

8. The method for the cooperative work of the plurality of sets of wireless mesh networks according to claim 1, wherein: step 4), each single set of mesh network enters a normal working state and needs two types of message transmission;