CN108260106A - The ad hoc network method for building up and device of a kind of intelligent terminal WiFi - Google Patents
The ad hoc network method for building up and device of a kind of intelligent terminal WiFi Download PDFInfo
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- CN108260106A CN108260106A CN201810020832.8A CN201810020832A CN108260106A CN 108260106 A CN108260106 A CN 108260106A CN 201810020832 A CN201810020832 A CN 201810020832A CN 108260106 A CN108260106 A CN 108260106A
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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Abstract
The present invention relates to ad hoc network field, the ad hoc network method for building up and device of especially a kind of intelligent terminal WiFi.The present invention utilizes WiFi WLANs（WiFi WLAN）Each cluster is established, the cluster head of each cluster serves as access point（AP, Access Point）；The branches and leaves node of each cluster carries out equity using WiFi Direct（P2P, Peer to Peer）Multiple clusters are connected into the self-organizing network of the multi-hop of an arbitrary extension by connection.It is end node wherein to connect at least one in the branches and leaves node for be formed ad hoc network with other clusters（STA, Station）.The branches and leaves node is STA end nodes or soft hot spot（SAP, Soft Access Point）, wherein the cluster head AP of each cluster establishes a cluster with arbitrary STA nodes or arbitrary SAP nodes.The connection of STA and SAP is utilized between cluster and cluster, the multihop network topology extension of WiFi direct is realized on based on WiFi WLAN.
Description
Technical field
The present invention relates to ad hoc network field, the ad hoc network method for building up and device of especially a kind of intelligent terminal WiFi.
Background technology
Currently common smart mobile phone has been obtained for extensive use, but the communication between mobile phone is needed by building base station
It realizes, meanwhile, the related software application of mobile phone needs the support of background service system.When the communication base station of 3G/4G is unavailable
(remote mountain areas, disaster-stricken environment or significant task guarantee), the communication capacity of mobile phone will be restricted.
Common smart mobile phone has 3G/4G mobile communication, Bluetooth communication and WiFi communication ability.Wherein 3G/4G movements are logical
Letter, can not be as the connection mode of mobile ad-hoc network dependent on infrastructure.Bluetooth is short distance connection mode, is used
The distance of Bluetooth communication is usually no more than 10 meters.Therefore bluetooth limits the mobility of network node as transport network layer,
Network coverage is limited, therefore cannot function as mobile ad-hoc network is stably connected with mode.Android intelligent base
This all has WiFi module.Frequency range transmitting signals of the WiFi based on 2.4GHz, maximum transmission rate can reach 200-
300Mbps.WiFi network allows two nodes directly to interconnect, therefore, can be with without by any infrastructure node
Realize that mobile phone self-organizing network is planned using the WiFi module that smart mobile phone carries.
The design of mobile phone self-organizing network can solve the problems, such as intercommunication of the regular handset under no base-station environment, utilize mobile phone
Included WiFi communication module and communication protocol realize routing and relevant link layer protocol on mobile phone so that common intelligence hand
Equipment is for the ability being in communication with each other, the support without background service system.
At present, using WiFi communication module realize smart mobile phone self-organizing network planing method there are three types of：
1) WiFi module that smart mobile phone carries supports 802.11 standard agreements of IEEE, can set ad hoc therein
Pattern, but need after carrying out root to mobile phone, wpa_supplicant configuration files are changed, change the messaging parameter of WiFi,
This method has many limitations to self-organizing network APP applications, is not suitable for common smart mobile phone application.
2) practical communication distances of the WiFi under line of sight conditions can preferably support mobile phone between 150 meters to 200 meters
The design scenario of self-organizing network.General commercial smart mobile phone WiFi supports a variety of coexistance models in itself, mainly utilizes WiFi
WLAN patterns and WiFi Direct patterns, wherein WiFi WLAN are basic hotspot pattern, and hot spot is accessed as cell-phone customer terminal.
WiFi Direct patterns are for direct-connected between mobile nodes.Under certain condition, WiFi WLAN exist with WiFi Direct patterns
It can be coexisted on same mobile phone.Wherein, the networking mechanism based on WiFi Direct cluster heads extension WiFi WLAN.
The networking mechanism existing design on pertinent literature, using the WiFi Direct functions of smart mobile phone, establish with
SAP (being Soft Access Point) is the localized network of cluster head, and WiFi WLAN realization network topologies are utilized between cluster head
Extension.As shown in Figure 1.
This method is primarily present following two problems：
21) cluster head using WiFi Direct is needed to be used as SAP, and SAP automatically generates one by android system
Random access password needs to know the password when terminal node accesses every time.When in practical applications not to smart mobile phone root,
Terminal node is difficult to obtain the SAP access pins that system generates at random.
22) in Topology connection, the IP address as leader cluster node is identical, cause can only unidirectional data transmission, therefore, will
In the self-organizing network for seeking two-way interactive function, and do not apply to.
For above-mentioned two problems, the solution needed is root commercialization smart mobile phones, by obtaining Android systems
The mode of system bottom document obtains random access password, and the IP address in network is reconfigured.Since mobile phone needs
Root equally limits the application of the network topology extended method in common smart mobile phone.
3) " Firechat " application software being combined using bluetooth with WiFi, the software are mainly realized using bluetooth from group
Network function is knitted, although Firechat application software declares that combining bluetooth and WiFi realizes self-organizing network, from applied field
From the point of view of scape or based on Bluetooth ad-hoc network.
Invention content
The technical problems to be solved by the invention are：In view of the problems of the existing technology, a kind of intelligent terminal is provided
The ad hoc network method for building up and device of WiFi.This method or device are based on WiFi WLAN branches and leaves point spread WiFi Direct
Networking mechanism.
The technical solution adopted by the present invention is as follows：
A kind of ad hoc network method for building up of intelligent terminal WiFi includes：
Each cluster is established using WiFi WLAN (being WLAN), the cluster head of each cluster serves as AP and (is
Access Point) hot spot, form a LAN；
The branches and leaves node of each cluster carries out P2P (being Peer to Peer) connection using WiFi Direct, by multiple clusters
The ad hoc network of the multi-hop of an arbitrary extension is connected into, wherein being connect in the branches and leaves node for be formed ad hoc network at least with other clusters
One is STA (being Station) node.
Further, the branches and leaves node is STA nodes or SAP nodes, wherein the cluster head AP of each cluster with it is arbitrary
STA nodes or arbitrary SAP nodes establish a cluster.
Further, STA branches and leaves node does not have child node；The child node of SAP branches and leaves nodes is STA branches and leaves nodes.
Further, the ad hoc network method further includes：
It is the AP nodes of cluster or branches and leaves node to determine a certain node；
When the node is branches and leaves node, the P2P connections for being connect with other cluster branches and leaves nodes P2P are opened；
When the node is AP nodes, then the node hot spot for being connect with other branches and leaves nodes WLAN is opened.
Further, it is described to determine that the node is the AP nodes of cluster or branches and leaves node detailed process is：
A certain node is based on the WiFi of itself, AP nodes existing for scanning surrounding；
When scanning WLAN successes, then the node is branches and leaves node, therefore accesses the AP nodes, while opens node P2P companies
It connects；Otherwise, AP nodes are not scanned, then the P2P connections for opening the node are scanned；
When the P2P connections of the node are scanned, other nodes P2P successes are scanned, then the node is branches and leaves node, should
Node is to establish P2P with other branches and leaves nodes to connect, and open AP node scans；
When the P2P of the node is scanned, other P2P are unsuccessful, then the node is set as AP hot spots.
Further, it when described two nodes are established as AP nodes simultaneously, is such as added in without branches and leaves node, then according to random
Time mode, any one AP node exits ap mode in two AP, re-starts AP scannings, and access another AP nodes.
Further, winding is avoided to connect between the branches and leaves node of the same AP nodes.
Ad hoc network based on the ad hoc network method for building up is established device and is included：
WLAN communication modules, for establishing each cluster using WiFi WLAN, the cluster head of each cluster serves as AP hot spots, composition
One LAN；
Ad hoc network forms module, and P2P connections are carried out using WiFi Direct for the branches and leaves node of each cluster, will be multiple
Cluster connects into the ad hoc network of the multi-hop of an arbitrary extension, wherein being connect in the branches and leaves node for be formed ad hoc network at least with other clusters
There are one be STA nodes.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1) technological approaches of existing mobile phone self-organization network need to change the Working mould of WiFi IEEE802.11 modules by root
Formula for general commercial smart mobile phone and does not apply to.The patent is solved in the case that without, into root, utilizing intelligence to smart mobile phone
The WiFi WLAN and WiFi Direct communication modules of energy mobile phone realize the extension of self-organized network topology.
2) using the WiFi Direct connections of WiFi WLAN branches and leaves nodes, can solve the soft hot spots of P2P randomly generate it is close
The problem of code hardly possible obtains.
Description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein：
Fig. 1 is the network topology schematic diagram based on WiFi Direct cluster heads extension WiFi WLAN.
Fig. 2 is the network topology schematic diagram based on WiFi WLAN branches and leaves point spread WiFi Direct.
Fig. 3 is that this law expands schematic diagram using the network topology of WiFi WLAN branches and leaves extension WiFi Direct.
Fig. 4 is that the present invention is based on the network topology structures of WiFi WLAN and WiFi Direct.
Fig. 5 is MANET flow process figure of the present invention.
Fig. 6 is networking planning random access procedure schematic diagram of the present invention.
It is to represent WLAN that arrow solid line is treated in figure, and dotted line represents P2P；
Specific embodiment
All features or disclosed all methods disclosed in this specification or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification, unless specifically stated, can be equivalent by other or with similar purpose
Alternative features are replaced.That is, unless specifically stated, each feature is an example in a series of equivalent or similar characteristics
.
Related description of the present invention：
1. the self-organization network structure based on smart mobile phone is as shown in Figure 4.An office is formed using the WLAN based on WiFi
Domain network realizes the interconnection of multiple local area network using P2P connections, so as to form the self-organizing network of multi-hop.
2.AP nodes：It can only be then attached using WLAN, and cannot there is WLAN to be connected with P2P simultaneously.As LAN
The hot spot of network, other mobile phones are connect as STA with AP.
3.STA nodes：Smart mobile phone as STA nodes can open WLAN and P2P functions simultaneously, as shown in figure 5, can
To communicate simultaneously with the AP nodes under WLAN, P2P can also be established with other nodes and connect.The STA nodes for having P2P connections can
To extend the multi-hop range of WLAN LANs.
4.SAP nodes：Such node belongs to the soft hot spot in P2P WiFi Direct mechanism, can realize multiple nodes
Soft hot spot access under WiFi Direct.Such node can realize the connection of WLAN and P2P simultaneously.
5. the child node of same AP nodes is STA nodes or SPA nodes.
6. the composition of most clusters is：One AP node, the branches and leaves node of two level is STA nodes or SAP nodes；
The child node of the SAP branches and leaves nodes of two level, i.e. three-level branches and leaves node are STA nodes.
7. there are following several possibilities with cluster type：
1) first order AP nodes, the SAP nodes of multiple second level；Each SAP nodes correspond to the STA sections of multiple third level
Point；
2) first order AP nodes, the STA nodes of multiple second level；
3) first order AP nodes, the SAP nodes of multiple second level and SAP nodes；Each SAP nodes correspond to multiple the
The STA nodes of three-level.
8. at least there are a SAP nodes in P2P connections in ad hoc network could form ad hoc network.
Operation principle：
The present invention is ad hoc network method principle such as Fig. 2 institutes based on WiFi WLAN branches and leaves point spread WiFi Direct
Show.Network carries out sub-clustering, establishes each cluster using WiFi WLAN, the cluster head of each cluster serves as AP hot spots, forms a local
Net.The branches and leaves node of each cluster carries out P2P connections using WiFi Direct, is opened up so as to which the multiple clusters disperseed are connected into one
The network for flutterring extension is as shown in Figure 3.
Specifically, with reference to self-organized network topology structure in figure 4,1) self-organization network structure based on smart mobile phone such as figure
Shown in 4.A local area network is formed using the WLAN based on WiFi, the interconnection of multiple local area network is realized using P2P connections, from
And form the self-organizing network of multi-hop.
In actual application environment, the application of all smart mobile phones has randomness.I.e. after smart mobile phone booting, it is impossible to press
According to the mode of above-mentioned Fig. 4, fixed certain nodes are AP nodes, and fixed certain node SAP nodes, which is not suitable for having intelligence
The characteristics of mobile phone random networking.Therefore, it is necessary to (according to self-organization network method for building up, pass through software by mobile phone self-organization network APP
Program forms corresponding A PP), using stochastic programming mode, form above-mentioned self-organizing network.
Ad hoc network method for building up and flow are as follows：1) after mobile phone power-on, self-organization network APP, self-organization network APP meetings are run
The existing AP nodes based on WiFi around prompting scanning.2) scanning WLAN successes, then access AP nodes, while opens P2P companies
It connects.3) scanning WLAN is unsuccessful, around without scanning to AP nodes, then opens P2P connections scanning.4) scanning P2P successes, then connect
Enter P2P connections, if there are no access AP at this time, this also opens AP scannings.5) scanning P2P is unsuccessful, then sets local node
For hot spot AP.6) logical flow chart of random networking is as shown in Figure 5.
In more specific Fig. 5, in step " modification hot spot password ", self-organization network APP software prompt users are needed, are changed
The simple password of hot spot or cancellation hot spot password.I.e. if this node is set as hot spot, it is close that access can be cancelled
Code, facilitates the access of other mobile nodes.Since APP has access authentication strategy, the certification of access pin can be cancelled,
Convenient for mobile phone hot spot can be accessed between arbitrary mobile nodes.
Using above-mentioned network plan method, the network topology of the WLAN and WiFi Direct based on WiFi can be realized
Structure, access process are as shown in Figure 6.Networking planning random access procedure is as follows：1) node 1 starts first to search for the AP of surrounding, does not have
Have, open search P2P, all do not search, then oneself opens hot spot, becomes AP.2) when node 2 adds in, also according to the search
Mode is established WLAN with node 1 and is connect.Node 2 also opens P2P simultaneously, waits for connection.3) when node 3 adds in, due to exceeding
The AP access ranges of node 1, so by searching for P2P, connect with node 2.Meanwhile node 3 starts WLAN, scans AP.4)
When node 4 adds in, due to not searching AP, P2P can not be also established, therefore, oneself is opened hot spot, becomes AP, node 3 adds in
The AP connections.By above-mentioned steps, whole network topology can automatically form the self-organization network structure of multi-hop.
The invention is not limited in aforementioned specific embodiments.The present invention, which expands to, any in the present specification to be disclosed
The step of new feature or any new combination and any new method or process disclosed or any new combination.
Claims (8)
1. a kind of ad hoc network method for building up of intelligent terminal WiFi, it is characterised in that including：
Each cluster is established using WiFi WLAN, the cluster head of each cluster serves as AP hot spots, forms a WLAN；
The branches and leaves node of each cluster carries out peer to peer connection P2P using WiFi Direct, and multiple clusters are connected into an arbitrary extension
Multi-hop ad hoc network, wherein it is STA nodes that at least one in the branches and leaves node for be formed ad hoc network is connect with other clusters.
2. ad hoc network method for building up according to claim 1, it is characterised in that the branches and leaves node be STA nodes or
SAP nodes, wherein the cluster head AP of each cluster establishes a cluster with arbitrary STA nodes or arbitrary SAP nodes.
3. ad hoc network method for building up according to claim 1, it is characterised in that STA branches and leaves nodes do not have child node；SAP
The child node of leaf node is the STA branches and leaves nodes of another cluster.
4. the ad hoc network method for building up according to one of claims 1 to 3, it is characterised in that further include：
It is the AP nodes of cluster or branches and leaves node to determine a certain node；
When the node is branches and leaves node, opens and connect for the P2P communicated to connect with other cluster branches and leaves nodes；
When the node is AP nodes, then the local node hot spot for being connect with other branches and leaves nodes WLAN is opened.
5. ad hoc network method for building up according to claim 4, it is characterised in that described to determine that the node is the AP nodes of cluster
Or branches and leaves node detailed process is：
A certain node is based on the WiFi of itself, AP nodes existing for scanning surrounding；
When scanning WLAN successes, then the node is branches and leaves node, therefore accesses the AP nodes, while opens node P2P connections；It is no
Then, AP nodes are not scanned, then the P2P connections for opening the node are scanned；
When the P2P connections of the node are scanned, other nodes P2P successes are scanned, then the node is branches and leaves node, the node
P2P is established with other branches and leaves nodes to connect, and opens AP node scans；
When the P2P of the node is scanned, other P2P are unsuccessful, then the node is set as AP hot spots.
6. according to the ad hoc network method for building up described in claim 1,2,3 or 5, it is characterised in that described two nodes are established simultaneously
It during for AP nodes, is such as added in without branches and leaves node, then according to random time mode, any one AP node exits AP in two AP
Pattern re-starts AP scannings, and accesses another AP nodes.
7. ad hoc network method for building up according to claim 6, it is characterised in that in the cluster of the same AP nodes composition, branch
Caused winding connects after P2P connections should be avoided between leaf node.
8. the ad hoc network based on the ad hoc network method for building up of 1,2,3,5 or 7 establishes device, it is characterised in that including：
The software module that ad hoc network is formed, utilizes two kinds of WiFi WLAN and WiFi direct in intelligent terminal WiFi communication module
Communication channel establishes each cluster using WiFi WLAN, and the cluster head of each cluster serves as AP hot spots, forms a WLAN；With
P2P connections are carried out using WiFi Direct in the branches and leaves node of each cluster, multiple clusters are connected into the multi-hop of an arbitrary extension
Ad hoc network, wherein it is STA nodes that at least one in the branches and leaves node for be formed ad hoc network is connect with other clusters.
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| CN112486753A (en) * | 2020-12-18 | 2021-03-12 | 展讯半导体(成都)有限公司 | WiFi equipment automatic test method and system and readable storage medium |
| CN113115289A (en) * | 2021-04-07 | 2021-07-13 | 颜丽光 | WiFi terminal free networking communication method |
| CN113365372A (en) * | 2021-06-23 | 2021-09-07 | Oppo广东移动通信有限公司 | Ad hoc network method and device, computer readable medium and electronic equipment |
| CN114339711A (en) * | 2021-12-24 | 2022-04-12 | 重庆杰夫与友文化创意有限公司 | Internet access system and method based on distributed architecture |
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| CN109218678B (en) * | 2018-10-11 | 2021-03-19 | 广州市九安智能技术股份有限公司 | Mesh technology-based wireless video monitoring automatic networking method and system |
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| CN113115289A (en) * | 2021-04-07 | 2021-07-13 | 颜丽光 | WiFi terminal free networking communication method |
| CN113115289B (en) * | 2021-04-07 | 2023-02-14 | 颜丽光 | WiFi terminal free networking communication method |
| CN113365372A (en) * | 2021-06-23 | 2021-09-07 | Oppo广东移动通信有限公司 | Ad hoc network method and device, computer readable medium and electronic equipment |
| CN114339711A (en) * | 2021-12-24 | 2022-04-12 | 重庆杰夫与友文化创意有限公司 | Internet access system and method based on distributed architecture |
| CN114339711B (en) * | 2021-12-24 | 2023-09-19 | 重庆杰夫与友文化创意有限公司 | Internet access system and method based on distributed architecture |
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