CN104837213A

CN104837213A - Method, device, and network for establishing connection via WiFi

Info

Publication number: CN104837213A
Application number: CN201410047190.2A
Authority: CN
Inventors: 陈川涛; 陈晨; 朱帅
Original assignee: Beijing Samsung Telecommunications Technology Research Co Ltd; Samsung Electronics Co Ltd
Current assignee: Beijing Samsung Telecom R&D Center; Beijing Samsung Telecommunications Technology Research Co Ltd; Samsung Electronics Co Ltd
Priority date: 2014-02-10
Filing date: 2014-02-10
Publication date: 2015-08-12

Abstract

The embodiment in the invention provides a method for establishing connection via WiFi. The method comprises steps of: sending information of a connection request to a lower-layer node from a current node; receiving information of a connection request response back-fed from the lower-layer node by the current node; establishing WiFi connection with the lower-layer node; and transmitting data to the lower-layer node via the WiFi connection by the current node. The embodiment in the invention also provides a device and network for establishing connection via WiFi. The method provided in the invention can establish a topological structure of WiFi connection with at least three layers, so that WiFi devices can be massively joined, and multi-layer network construction of WiFi devices themselves and a large-scale free network construction of WiFi devices are realized.

Description

The method connected by WiFi, equipment and network

Technical field

The present invention relates to mobile communication technology field, specifically, the present invention relates to the method, equipment and the network that are connected by WiFi.

Background technology

In recent years, along with the develop rapidly of electronic industry and the communication technology, the new business development based on data, speech, video is swift and violent.The fast development of microelectric technique, computer hardware technique, the work become increasingly complex for terminal equipment process lays the foundation, for terminal equipment personalization provide realize may, terminal is broken away from the to a certain extent restriction of network, can possess function from strength to strength.In addition, user itself also has urgent demand to terminal, wish termination function more powerful, more flexibly, simpler and more direct.The development of information technology, makes terminal technology move towards intellectuality, mobile, multifunction.

WiFi equipment is as wireless connectivity devices, and its WiFi P2P method of attachment can make WiFi equipment direct-connected, conveniently prints and shares the operations such as synchronous.WiFi equipment can complete man-to-man connection or link together as group.Wherein, connecting one to one is the common direct-connected application of WiFi, can carry out the operation such as exchanges data and Application share; One-to-many as group connects and can complete the operations such as data transmission synchronization, but is subject to the restriction of WiFi chip, and the connection of current one-to-many can only support limited WiFi equipment number, is generally 8.

As shown in Figure 1, 2, Fig. 1 and Fig. 2 is the topology diagram that in prior art, WiFi equipment is direct-connected respectively.WiFi equipment of the prior art only supports that one deck user organizes the connection mode of client, and user's group is as promoter, and client is as recipient, and the direct-connected topological structure of constructed WiFi is two-layer structure.As shown in Figure 1, user's group is man-to-man direct-connected pattern with client, and as shown in Figure 2, user's group and two clients are the direct-connected pattern of one-to-many, are specially two clients and are connected in user's group.

Therefore, be necessary to propose a kind of technical scheme, solve WiFi equipment due to the restriction of WiFi chip, the problem of limited WiFi equipment can only be connected by WiFi.

Summary of the invention

Object of the present invention is intended at least solve one of above-mentioned technological deficiency, and the WiFi particularly by building at least three layers connects topological structure, realizes the extensive access that WiFi connects lower WiFi equipment.

On the one hand, embodiment of the present invention provides a kind of method connected by WiFi, comprises the following steps: present node sends the message of connection request to lower level node; Described present node receives the message of the connection request response of lower level node feedback, sets up WiFi be connected with described lower level node; Described present node is connected to described lower level node transmission data by described WiFi.

On the other hand, embodiment of the present invention provides a kind of equipment connected by WiFi, comprising: sending module, for sending the message of connection request to lower level node; Receiver module, for receiving the message of the connection request response of described lower level node feedback; Link block, for the connection request response message fed back according to described lower level node, sets up WiFi with described lower level node and is connected; Transport module, for connecting by described WiFi to described lower level node transmission data.

Another aspect, embodiment of the present invention provides a kind of network connected by WiFi, and network is the point to point connect network that the above-mentioned disclosed equipment connected by WiFi is set up, and wherein, described network comprises the equipment of at least one layer as intermediate node.

The such scheme that the present invention proposes, the WiFi that can build at least three layers connects topological structure, realizes the extensive access that WiFi connects lower WiFi equipment.

The aspect that the present invention adds and advantage will part provide in the following description, and these will become obvious from the following description, or be recognized by practice of the present invention.

Accompanying drawing explanation

The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:

Fig. 1 is the topology diagram one that in prior art, WiFi equipment is direct-connected;

Fig. 2 is the topology diagram two that in prior art, WiFi equipment is direct-connected;

Fig. 3 is the schematic flow sheet of a kind of embodiment of method that the present invention is connected by WiFi;

Fig. 4 is the schematic flow sheet of the another kind of embodiment of method that the present invention is connected by WiFi;

Fig. 5 is the topology diagram that WiFi of the present invention connects a kind of embodiment;

Fig. 6 is the structural representation of a kind of embodiment of equipment that the present invention is connected by WiFi.

Embodiment

Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.

Those skilled in the art of the present technique are appreciated that unless expressly stated, and singulative used herein " ", " one ", " described " and " being somebody's turn to do " also can comprise plural form.Should be further understood that, the wording used in specification of the present invention " comprises " and refers to there is described feature, integer, step, operation, element and/or assembly, but does not get rid of and exist or add other features one or more, integer, step, operation, element, assembly and/or their group.Should be appreciated that, when we claim element to be " connected " or " coupling " to another element time, it can be directly connected or coupled to other elements, or also can there is intermediary element.In addition, " connection " used herein or " coupling " can comprise wireless connections or wirelessly to couple.Wording "and/or" used herein comprises one or more whole or arbitrary unit listing item be associated and all combinations.

Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (comprising technical term and scientific terminology), have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.It should also be understood that, those terms defined in such as general dictionary, should be understood to that there is the meaning consistent with the meaning in the context of prior art, unless and by specific definitions as here, otherwise can not explain by idealized or too formal implication.

Those skilled in the art of the present technique are appreciated that, here used " terminal ", " terminal equipment " had both comprised the equipment of wireless signal receiver, it only possesses the equipment of the wireless signal receiver without emissivities, comprise again the equipment receiving and launch hardware, it has and on bidirectional communication link, can carry out the reception of two-way communication and launch the equipment of hardware.This equipment can comprise: honeycomb or other communication equipments, its honeycomb or other communication equipment of having single line display or multi-line display or not having multi-line display; PCS(Personal Communications Service, PCS Personal Communications System), it can combine voice, data processing, fax and/or its communication ability; PDA(PersonalDigital Assistant, personal digital assistant), it can comprise radio frequency receiver, beep-pager, the Internet/intranet access, web browser, notepad, calendar and/or GPS(Global PositioningSystem, global positioning system) receiver; Conventional laptop and/or palmtop computer or other equipment, it has and/or comprises the conventional laptop of radio frequency receiver and/or palmtop computer or other equipment.Here used " terminal ", " terminal equipment " can be portable, can transport, be arranged in the vehicles (aviation, sea-freight and/or land), or be suitable for and/or be configured at local runtime, and/or with distribution form, any other position operating in the earth and/or space is run.Here used " terminal ", " terminal equipment " can also be communication terminal, access terminals, music/video playback terminal, can be such as PDA, MID(Mobile Internet Device, mobile internet device) and/or there is the mobile phone of music/video playing function, also can be the equipment such as intelligent television, Set Top Box.

Refer to Fig. 3, Fig. 3 is the schematic flow sheet of a kind of embodiment of method that the present invention is connected by WiFi, as shown in Figure 3, comprises the following steps:

S11, present node sends the message of connection request to lower level node;

S12, present node receives the message of the connection request response of lower level node feedback, sets up WiFi be connected with lower level node;

S13, present node is connected to lower level node transmission data by WiFi.

In the present embodiment, the implementer of method is present node, and present node is a WiFi equipment.Wherein, lower level node is also WiFi equipment.

By the method for the present embodiment, the WiFi that can build at least three layers connects topological structure, WiFi equipment is accessed on a large scale, realizes the multitiered network networking of WiFi equipment self and the extensive free networking of WiFi equipment.

Refer to Fig. 4, Fig. 4 is the schematic flow sheet of the another kind of embodiment of method that the present invention is connected by WiFi, as shown in Figure 3, comprises the following steps:

S21, present node receives the connection request message of upper layer node.

S22, sends the message of connection request response, sets up WiFi be connected with upper layer node to upper layer node.

Present node and upper layer node set up the detailed process that WiFi is connected, first present node receives the connection request message that other nodes send, then the message of connection request response is sent to upper layer node, complete and be connected with the WiFi of other nodes, now, other nodes are as the upper layer node of present node.

S23, when all nodes be connected with upper layer node in the mode of present node reach maximum number, present node receives the node transition request message that upper layer node sends.

Utilize the WiFi constructed by method of the present embodiment to connect, the direct-connected nodes of each P2P group is provided with maximum upper limit in advance.

When all nodes be connected with upper layer node in the mode of present node reach maximum number, upper layer node can not access other node again, now, for accessing more node, the point spread of present node place layer need be become the node of accessible node.The present embodiment is described for present node.

S24, the message that present node responds to upper layer node sending node convert requests, converts to and can connect the intermediate node of lower level node by WiFi.

The process that present node changes into intermediate node is, first upper layer node is to present node sending node transition request message, then the message that responds to upper layer node sending node convert requests of present node, complete the conversion of present node, namely present node converts to and can connect the intermediate node of lower level node by WiFi.

S25, present node sends connection request message to lower level node.

When present node can connect lower level node, present node can send invitation.

S26, present node receives the message of the connection request response of lower level node feedback, sets up WiFi be connected with lower level node.

Present node and lower level node set up the detailed process that WiFi is connected, first present node sends connection request message to other nodes, then after the message that other node feeding back connection requests respond, present node completes and is connected with the WiFi of other nodes, now, other nodes are as the lower level node of present node.

Because present node can pre-set by the maximum number of lower level node that connects of WiFi, when the lower level node that present node connects reaches maximum number, present node sends to upper layer node and connects full message.Now, upper layer node can to present node other node sending node transition request message with layer, this other node repeats the work done of present node.

It is to be noted, upper layer node once only sends transition request message to a connected node, such as: when the lower level node that present node connects reaches maximum number, upper layer node just sends transition request message to another node with present node place layer.

WiFi constructed by the present embodiment connects topological structure does not have the degree of depth to limit, and when the lower level node that the node of present node place layer connects all reaches maximum number, lower level node also can be exchanged into intermediate node.

Wherein, the mode of above-mentioned each internodal data transmission is as follows:

When A present node needs to lower level node transmission data, send the message of transmission request of data to upper layer node.

B, when present node receives the message of the transmission data validation that root node sends from upper layer node, starts to transmit data;

C when the data transfer is complete, sends the message transmitted data and complete to upper layer node.

The WiFi that method shown in Fig. 4 is formed connects in topological structure, and can only have a root node, be the promoter of transfer of data, and in the transmitting procedure of whole data, the role of root node can not change.The node of lowermost layer is leaf node, only bears the reception work of data.Intermediate node is root/leaf node, and namely this kind of node can be used as root node, also can be used as leaf node, is in particular in, when the upper layer node of root/leaf node sends data, it is as leaf node; When the lower level node of root/leaf node receives data, it is as root node.

Method shown in Fig. 4 creates WiFi and connects the principle of topological structure and be, first root node is initiated a WiFi P2P and connected, and invites other nodes to add, or by which platform equipment of two P2P equipment consult to decide as root node.The node be invited to or non-root node are as leaf node, if the quantity of this leaf node reaches the maximum upper limit that P2P group can be direct-connected, then leaf node will be converted to root/leaf node.There is new node to add again, one/leaf node can be connected to, until reach the maximum upper limit that this root/leaf node can be direct-connected.If also have new equipment to add, be then connected to another root/leaf node.If root/leaf node connects complete, then expand new root/leaf node.

Wherein, leaf node is converted to root/leaf node for change one by one, shows as one/leaf node direct-connected nodes when reaching maximum upper limit, then another leaf node is converted to root/leaf node.

For elaborating method embodiment illustrated in fig. 4, composition graphs 5 is described.Refer to Fig. 5, Fig. 5 is the topology diagram that WiFi of the present invention connects a kind of embodiment.

It is the topological structure of at least three layers that the WiFi that method shown in Fig. 4 is formed connects topological structure, in multilayer topological structure, if the number of plies is equal to, or greater than three layers, all can be reduced to three-layer network topological structure to set forth, for sake of clarity, introduce a kind of interim node type host node (Host).As shown in Figure 5, comprising: Host, node (Node) A, Node B, Node C, Node1, Node2 and Node3.

Corresponding to each node in embodiment illustrated in fig. 4, Host is upper layer node, and Node A is present node, Node B and Node C be connected with Host and with the node of Node A with layer, Node1, Node2 and Node3 are the lower level node of Node A.

Wherein, Host is Connection initiator, and in multilayer topological structure, root node or root/leaf node can be Host node.

Wherein, its maximum upper limit of nodes that in topological structure, each P2P group can be direct-connected is set in advance as 3.

Elaborate the building process of topological structure shown in Fig. 5 below.

First several message used in topological structure building process are introduced, specific as follows:

MSG_SET_GO_CLIENT: host node sends this message to Node A, Node B or Node C, notifies that it becomes intermediate node.

MSG_SET_GO_CLIENT_ACK: this message represent arrange intermediate node success, as the feedback message receiving MSG_SET_GO_CLIENT message.

MSG_CLIENT_FULL: when the number of child nodes of intermediate node reaches in limited time, this message can be sent.After host node receives this message, will consider to increase new intermediate node.

Secondly, the structure flow process of topological structure is specific as follows:

A.Host creates a P2P group (level1primary group).

B.Host invites other nodes to add level1 group.

As shown in Figure 5, invitation Node A, Node B, Node C add level1 group.

C judges whether the nodes be connected with Host in level1 group reaches maximum upper limit.

As shown in Figure 5, because Node A, the Node B, the Node C that are connected with Host reach the maximum node number that the P2P group that pre-sets can be direct-connected, add new node if want, need Node A, Node B or Node C to change.

In other embodiments, when the nodes that Host invites does not reach maximum upper limit, the node also can invited is changed.

If D reaches maximum upper limit, then Host sends MSG_SET_GO_CLIENT message to any node in connected level1 group.

If do not reach maximum upper limit, then the node newly added can continue to be connected to Host.

As shown in Figure 5, Host sends MSG_SET_GO_CLIENT message to Node A.

The node that E receives MSG_SET_GO_CLIENT message sends MSG_SET_GO_CLIENT_ACK message to Host, is converted to intermediate node.

As shown in Figure 5, Node A sends MSG_SET_GO_CLIENT_ACK message and is converted to intermediate node to Host, Node A.

F intermediate node invites other nodes to add the P2P group (level2secondarygroup A) of its establishment.

As shown in Figure 5, Node A invites Node1, Node2, Node3 as its lower level node.

G judges whether the lower level node number be connected with intermediate node reaches maximum upper limit.

As shown in Figure 5, judge whether the lower level node number be connected with Node A reaches maximum upper limit.

If H reaches maximum upper limit, then intermediate node sends MSG_CLIENT_FULL message to Host.

As shown in Figure 5, when the lower level node that Node A has connected is 3, the full message of connection need be sent to Host.

I judges that whether intermediate node is last intermediate node in level1 group.

If J is judged as NO, then Host sends MSG_SET_GO_CLIENT message to the node of connected arbitrary non-intermediate node.

As shown in Figure 5, if also have new node to need access, Host can send MSG_SET_GO_CLIENT message and carry out action to Node B or Node C, Node B or Node C according to the mode of Node A.

Wherein, the implementer of method shown in Fig. 4 is present node, and present node is a WiFi equipment.

Further, shown in the node in method described in Fig. 4 and Fig. 5, topological structure interior joint is WiFi equipment.

In sum, the method shown in Fig. 4 can access multiple WiFi equipment simultaneously, forms a topological structure connected at many levels, carries out the high efficiency of transmission of data, solve the problem that the direct-connected number of original WiFi equipment is less.

In method shown in Fig. 4, the conversion of node role is dynamic mapping, and the standard of conversion is father node Message recover signature.Utilize WiFi direct-connecting technology, by improving node role, when not adding any extras, realizing the multitiered network networking of equipment self, and then realizing the extensive free networking of equipment.

Because all nodes are in same operating frequency, so each sub-network can not be transmitted simultaneously, need to carry out successively.For two-layer networking, transmission is smoothly: root network-the first sub-network-the second sub-network-...-last sub-network.Multitiered network is actually the recursive operation of two-tier network.

Refer to Fig. 6, Fig. 6 is the structural representation of a kind of embodiment of equipment that the present invention is connected by WiFi, as shown in Figure 6, comprising: sending module 31, receiver module 32, link block 33 and transport module 34.

Acting as of above-mentioned each module, sending module 31 is for sending the message of connection request to lower level node; Receiver module 32 is for receiving the message of the connection request response of lower level node feedback; Link block 33, for the connection request response message fed back according to lower level node, is set up WiFi with lower level node and is connected; Transport module 34 is for connecting by WiFi to lower level node transmission data.

Wherein, receiver module 32 is further used for the message of the connection request receiving upper layer node; Sending module 31 is further used for the message sending connection request response to upper layer node; Link block 33 is further used for the connection request response message according to sending to upper layer node, sets up and is connected with the WiFi of upper layer node.

Wherein, receiver module 32 is further used for the message receiving the node convert requests that upper layer node sends; Sending module 31 is further used for the message to the response of upper layer node sending node convert requests, and the present embodiment equipment then converts to and can connect the intermediate node of lower level node by WiFi.

Wherein, in the present embodiment, intermediate node can pre-set by the maximum number of lower level node that connects of WiFi.When the lower level node that intermediate node connects reaches maximum number, sending module 31 is further used for sending to upper layer node connecting full message.

Wherein, transport module 34 specifically for: need to lower level node transmission data time, to upper layer node send transmission request of data message; When receiving the message of the transmission data validation that root node sends from upper layer node, start to transmit data; When the data transfer is complete, the message transmitted data and complete is sent to upper layer node.

The equipment that the present embodiment is connected by WiFi, i.e. WiFi equipment, can be used as the present node in method shown in Fig. 4.For the present embodiment equipment for present node, the WiFi of sending module 31, receiver module 32, link block 33 and transport module 34 is connected and sets forth.

The receiver module 32 of present node receives the message of the connection request that upper layer node sends, and sending module 31 sends the message of connection request response to upper layer node, makes present node and upper layer node set up WiFi and is connected.

Nodes that can be direct-connected due to upper layer node is limited, for accessing more node, the role of node need be changed, for present node, the receiver module 32 of present node receives the message of the node convert requests that upper layer node sends, and the message that sending module 31 responds to upper layer node sending node convert requests, present node now then converts to and can connect the intermediate node of lower level node by WiFi.

The sending module 31 of present node sends the message of connection request to lower level node, and receiver module 32 receives the message of the connection request response of lower level node feedback, thus makes present node and lower level node set up WiFi to be connected.

The present embodiment equipment WiFi connects the conversion of role, can realize the multitiered network networking of equipment self, and then realize the extensive free networking of equipment.

The point to point connect network that the network that the present invention is connected by WiFi is set up for equipment shown in Fig. 6, wherein, described network comprises the WiFi equipment that at least one layer can be used as intermediate node.This network can realize the extensive access of WiFi equipment shown in Fig. 6.

Those skilled in the art of the present technique are appreciated that the one or more equipment that the present invention includes and relate to for performing in operation described in the application.These equipment for required object and specialized designs and manufacture, or also can comprise the known device in all-purpose computer.These equipment have storage computer program within it, and these computer programs optionally activate or reconstruct.Such computer program can be stored in equipment (such as, computer) in computer-readable recording medium or be stored in and be suitable for store electrons instruction and be coupled in the medium of any type of bus respectively, described computer-readable medium includes but not limited to that the dish of any type (comprises floppy disk, hard disk, CD, CD-ROM, and magneto optical disk), ROM(Read-Only Memory, read-only memory), RAM(Random Access Memory, memory immediately), EPROM(Erasable Programmable Read-Only Memory, Erarable Programmable Read only Memory), EEPROM(Electrically Erasable ProgrammableRead-Only Memory, EEPROM (Electrically Erasable Programmable Read Only Memo)), flash memory, magnetic card or light card.Namely, computer-readable recording medium comprises and being stored or any medium of transmission information with the form that can read by equipment (such as, computer).

Those skilled in the art of the present technique are appreciated that the combination that can realize the frame in each frame in these structure charts and/or block diagram and/or flow graph and these structure charts and/or block diagram and/or flow graph with computer program instructions.Those skilled in the art of the present technique are appreciated that, the processor that these computer program instructions can be supplied to all-purpose computer, special purpose computer or other programmable data processing methods realizes, thus is performed the scheme of specifying in the frame of structure chart disclosed by the invention and/or block diagram and/or flow graph or multiple frame by the processor of computer or other programmable data processing methods.

Those skilled in the art of the present technique are appreciated that various operations, method, the step in flow process, measure, the scheme discussed in the present invention can be replaced, changes, combines or delete.Further, there is various operations, method, other steps in flow process, measure, the scheme discussed in the present invention also can be replaced, change, reset, decompose, combine or delete.Further, of the prior art have also can be replaced with the step in operation various disclosed in the present invention, method, flow process, measure, scheme, changed, reset, decomposed, combined or deleted.

The above is only some embodiments of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims

1. by the method that WiFi connects, it is characterized in that, comprise the steps:

Present node sends the message of connection request to lower level node;

Described present node receives the message of the connection request response of lower level node feedback, sets up WiFi be connected with described lower level node;

Described present node is connected to described lower level node transmission data by described WiFi.

2. the method connected by WiFi according to claim 1, be is characterized in that, also comprise:

Described present node receives the message of the connection request of upper layer node, and sends the message of connection request response to described upper layer node, sets up and is connected with the WiFi of described upper layer node.

3. the method connected by WiFi according to claim 2, be is characterized in that, present node also comprises before sending the message of connection request to lower level node:

Described present node receives the message of the node convert requests that described upper layer node sends;

The message that described present node responds to described upper layer node sending node convert requests, converts to and can connect the intermediate node of lower level node by WiFi.

4. the method connected by WiFi according to claim 3, be is characterized in that, described present node can pre-set by the maximum number of lower level node that connects of WiFi.

5. the method connected by WiFi according to claim 4, be is characterized in that, when the lower level node that described present node connects reaches described maximum number, described present node sends to described upper layer node and connects full message.

6. according to one of any described method connected by WiFi of claim 2 to 5, it is characterized in that, described present node is connected by described WiFi and transmits data to described lower level node, comprising:

When described present node needs to lower level node transmission data, send the message of transmission request of data to described upper layer node;

When described present node receives the message of the transmission data validation that root node sends from described upper layer node, start to transmit data;

When the data transfer is complete, the message transmitted data and complete is sent to described upper layer node.

7. by the equipment that WiFi connects, it is characterized in that, comprising:

Sending module, for sending the message of connection request to lower level node;

Receiver module, for receiving the message of the connection request response of described lower level node feedback;

Link block, for the connection request response message fed back according to described lower level node, sets up WiFi with described lower level node and is connected;

Transport module, for connecting by described WiFi to described lower level node transmission data.

8. the equipment connected by WiFi according to claim 7, be is characterized in that, described receiver module is further used for the message of the connection request receiving upper layer node;

Described sending module is further used for the message sending connection request response to described upper layer node;

Described link block is further used for the connection request response message according to sending to upper layer node, sets up and is connected with the WiFi of described upper layer node.

9. the equipment connected by WiFi according to claim 8, be is characterized in that, described receiver module is further used for the message receiving the node convert requests that described upper layer node sends;

Described sending module is further used for the message to the response of described upper layer node sending node convert requests, and described equipment then converts to and can connect the intermediate node of lower level node by WiFi.

10. the equipment connected by WiFi according to claim 9, be is characterized in that, described intermediate node can pre-set by the maximum number of lower level node that connects of WiFi.

11. equipment connected by WiFi according to claim 10, it is characterized in that, described sending module is further used for when the lower level node that described intermediate node connects reaches described maximum number, and described transmission to described upper layer node connects full message.

12. equipment connected by WiFi according to claim 11, be is characterized in that, described transport module specifically for:

When needing to lower level node transmission data, send the message of transmission request of data to described upper layer node;

When receiving the message of the transmission data validation that root node sends from described upper layer node, start to transmit data;

13. 1 kinds of networks connected by WiFi, it is characterized in that, according to one of any described equipment connected by WiFi of claim 7 to 12, set up the network of point to point connect, wherein, described network comprises the equipment of at least one layer as intermediate node.