CN202818623U

CN202818623U - Wireless mesh network

Info

Publication number: CN202818623U
Application number: CN 201220421412
Authority: CN
Inventors: 贺才正
Original assignee: JIANGSU ANWEN ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: JIANGSU ANWEN ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2012-08-24
Filing date: 2012-08-24
Publication date: 2013-03-20
Anticipated expiration: 2022-08-24

Abstract

The utility model discloses a wireless mesh network, including a second layer wireless mesh and a plurality of first layer wireless meshes. The first layer wireless mesh comprises a plurality of wireless nodes; the second layer wireless mesh comprises a plurality of wireless gateway nodes; each first layer wireless mesh establishes communication with more than two wireless gateways in the second layer wireless mesh; and the wireless gateways in the second layer wireless mesh are connected to a cloud server through the Internet respectively. The wireless mesh network provides uninterrupted service for a wireless Internet of Things, is reasonable in design, simple in structure and low in cost, and has good practicality. According to the wireless mesh network, the mutual complementation of multiple layers of plane structures of a wireless IOT network is facilitated, and multiple layers of networks can be interconnected.

Description

A kind of wireless mesh network

Technical field

The utility model relates to a kind of wireless mesh network, is specifically related to a kind of wireless mesh network that is applied to wireless Internet of Things.

Background technology

Existing wireless networking is to reach networking with the networking of level.A plurality of radio nodes of the ground floor management second layer, the radio node that second layer NM network management is a plurality of the 3rd layer.The 3G of GSM, how the networking of LTE reaches the target of networking with this concept.4G mobile system network configuration can be divided into three layers: physical network layer, middle environment layer, application network layer.Physical network layer provides access and routing function, and they are finished by wireless and association scheme core net.

Wireless Internet of Things is a flexibility height, and it is abominable that environment is set, but for the service quality requirements be again suitable height.But there is various problems in existing networking:

Existing 3G/4G networking is too expensive, is difficult to set up and manages;

Etherloop needs wiring, and each node needs the IP address;

Zigbee, MiWi, the technology such as Z-Wave all are worth and are applicable to family, and the small size scope can't solve large networking and the problem that expands gradually;

Difficulty is integrated in the utilization of multiple Internet of Things;

Be difficult to reach the high standard requirement of complementation, fault transfer and hitless operation;

Maintenance penalty is high, and the system configuration difficulty is high;

Wi-Fi expands difficulty, and the cost height is changed in removing of node.

(wireless) grid type network be one point-to-point to point, or equity point is to the system of equity point, namely one by the network that has the node that repeats to connect/send out function and form.Each node can both receive/transmit data, and is also the same with router, data passed to its abutment points.By relay process, the reliable communication link of packet, each node in the middle of running through arrives at intended target.Similar in appearance to internet and other point-to-point routing networks, the grid type network has the communication path of a plurality of redundancies.If a paths interrupts (comprising the radio frequency interference interruption) under any reason, grid network will be selected another paths automatically, keep proper communication.Generally speaking, grid network can automatically be selected shortest path, has improved the quality that connects.According to practice, if distance reduces twice, then the signal strength signal intensity of receiving terminal can increase by four times, makes link more reliable, does not also increase the node transmitting power.In the grid type network, needing only increases interstitial content, just can increase to reach scope, or from the increase of redundant link, bring more reliability.The grid type WLAN (wireless local area network) of today is mainly used based on the standard of 802.11a/b/g and the Zigbee radio-frequency technique of 802.15.4.

Wireless mesh network is applied to wireless Internet of Things, is the needs that meet Internet of Things development.

The utility model content

The purpose of this utility model is to provide a kind of wireless mesh network, and it provides continual service can for wireless Internet of Things.

For achieving the above object, the technical solution of the utility model is a kind of wireless mesh network of design, comprises second layer wireless mesh and a plurality of ground floor wireless mesh; The ground floor wireless mesh comprises a plurality of radio nodes, and second layer wireless mesh comprises a plurality of wireless gateway nodes; Each ground floor wireless mesh all with second layer wireless mesh in plural radio network gateway set up communication.

Preferably, the radio network gateway in the described second layer wireless mesh is connected to respectively the Internet.

Preferably, the radio network gateway in the described second layer wireless mesh is connected to the high in the clouds server by the Internet respectively.

Preferably, described radio node comprises: processor, the memory that is connected with described processor, by the wireless device of described processor control.

Preferably, described radio node also comprises the control module that the radio signal power of controlling wireless device and channel are selected.

Set up two (many) heavy Wi-Fis.The networking of ground floor is take the radio node of 802.15.4 agreement as main.The status of each node is equality completely, can interknit each other networking voluntarily.Node can be at any time increase, remove arbitrarily, networking is fully unaffected.

Can there be multiple different network interface at the networking of the second layer, but the 802.15.4 agreement must be present in wherein.Also be that equal standing is arranged between each node at second layer networking.Can connect communication by different network interfaces each other between the node, also can interknit by the 802.15.4 interface.Connect each other via 802.15.4 between the second layer and the ground floor networking.

Advantage of the present utility model and beneficial effect are: a kind of wireless mesh network is provided, and it provides continual service can for wireless Internet of Things, and reasonable in design, simple in structure, and cost is low, has good practicality.

This wireless mesh network so that having multilayer planar structure, being convenient to mutual complementation of wireless IOT Internet of Things networking can connect mutually between the multilayer networking.This framework reaches following purpose:

Wireless network can free networking;

But wireless network plug and play;

Wireless network can be recoiled automatically;

But wireless network Auto-Sensing;

Continual service;

Reduce the expense that arranges with maintenance.

Description of drawings

Fig. 1 is schematic diagram of the present utility model.

Embodiment

Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples only are used for the technical solution of the utility model more clearly is described, and can not limit protection range of the present utility model with this.

The technical scheme of the utility model implementation is:

A kind of wireless mesh network comprises second layer wireless mesh 2 and a plurality of ground floor wireless mesh 1; Ground floor wireless mesh 1 comprises a plurality of radio nodes 11, and second layer wireless mesh 2 comprises a plurality of radio network gateway 21 nodes; Each ground floor wireless mesh 1 all with second layer wireless mesh 2 in plural radio network gateway 21 set up communication.Radio network gateway 21 in the described second layer wireless mesh 2 is connected to high in the clouds server 4 by the Internet 3 respectively.

Described radio node 11 comprises: processor, the memory that is connected with described processor, by the wireless device of described processor control.Described radio node 11 also comprises the control module that the radio signal power of controlling wireless device and channel are selected.

Status between each node in the same layer wireless mesh is equality, is automatically networking between the node, also mutual transmission of information, and this also is the composition basic demand of based on wireless mesh network.Nodes is N, and the ditch access line of N* (N-1)/2 can be arranged.Desirable networking can add arbitrarily ingress or remove node, and also therefore new node adds, and new route can be set up automatically, in like manner, also is same running when node removes.Existing most of network all is the framework at tree-shaped networking, and the ditch access line need to be set up through the route that communication is reached in the management on upper strata.Mesh network can be broken the loaded down with trivial details of lamination frame room.

Communication between layers is the communication route that must have more than two.And the communication of the second layer and ground floor, the second layer must have and has at least plural node and ground floor to set up the communication route.Such structure can guarantee that just when any one node is ineffective be at once maintenance, and the operation of network is unaffected, reaches continual service.

Lose the node of function for node, the design's N+1 is redundant complementary, allows the multiple spot interconnection.This intelligent network is with neighbours' information management, and network state, the network information are upgraded and downloaded, and all are stored in high in the clouds.

New node is inserted into network, and log-on message will be broadcasted the node that is communicated to periphery with clean culture, finally can reach high in the clouds server 4.The affected new node this moment path of new node more.High in the clouds server 4 also can be passed on neighbor state and the information of radio node 11 simultaneously, and new communication route rebulids.

Server 4 meetings in high in the clouds manage for the state that each node carries out " heartbeat ".Work as knot removal, or node has been when having lost function, and the communication route of network must be recombinated, and normal node must be walked around these nodes and come the new route that moves of construction, especially for " clean culture message-Unicast message ", must provide reliable node to send message.The networking node of lower floor can by the affected node of networking node notice on upper strata, be set up new communication path.The wireless bottom of node can detect connectible all mid-side nodes, the response of obtaining all mid-side nodes with " broadcast message-Broadcast message ", and again set up new communication path.

The above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.

Claims

1. a wireless mesh network is characterized in that, comprises second layer wireless mesh and a plurality of ground floor wireless mesh; The ground floor wireless mesh comprises a plurality of radio nodes, and second layer wireless mesh comprises a plurality of wireless gateway nodes; Each ground floor wireless mesh all with second layer wireless mesh in plural radio network gateway set up communication.

2. wireless mesh network according to claim 1 is characterized in that, the radio network gateway in the described second layer wireless mesh is connected to respectively the Internet.

3. wireless mesh network according to claim 2 is characterized in that, the radio network gateway in the described second layer wireless mesh is connected to the high in the clouds server by the Internet respectively.

4. according to claim 1 or 3 described wireless mesh networks, it is characterized in that described radio node comprises: processor, the memory that is connected with described processor, by the wireless device of described processor control.

5. wireless mesh network according to claim 4 is characterized in that, described radio node also comprises the control module that the radio signal power of controlling wireless device and channel are selected.