CN102685856A - Wireless communication method and Wi-Fi Direct (Wireless Fidelity Direct) communication system - Google Patents
Wireless communication method and Wi-Fi Direct (Wireless Fidelity Direct) communication system Download PDFInfo
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Abstract
The invention designs a wireless communication method and system. The wireless communication system comprises a first wireless communication terminal, a second wireless communication terminal and a service set identifier (SSID), wherein the first wireless communication terminal at least supports a soft AP (access point) role, the second wireless communication terminal supports an STA (station) role, the SSID assigns a Wi-Fi Direct (Wireless Fidelity Direct) network to the first wireless communication network, and the second wireless communication terminal scans the SSID for free assignment and performs SSDI map processing on frames before two communication parties send the frames and after the two communication parties receive the frames. The Wi-Fi Direct communication terminals can be connected with each other without an AP, and the wireless communication method is based on a Wi-Fi Direct technology and adopts an SSID mapping process to effectively solve the problem that the SSID cannot be assigned freely in the Wi-Fi Direct.
Description
Technical field
The present invention relates to radio communication and the wireless communication system that directly is connected, particularly a kind of AP of need not can set up the technology of direct interconnection network.
Background technology
In 802.11 series standards; Basic Service Set (basic service set) is the basic module of 802.11 networks, and Basic Service Set is divided into two kinds: independent basic service set (independent basic service set) and foundation structure type services set (infrastructure basic service set).But these two kinds of networks still can not satisfy the demand that the user carries out multi-link and access internet at any time, everywhere; So Wi-Fi (Wireless Fidelity; Wireless compatibility authentication) alliance has released new connected mode again: Wi-Fi Direct (Wireless Fidelity Direct, wireless direct connection).
Wireless direct connection is based on the standard of 802.11 series standards; It has following characteristics: make ordinary terminal STA (Station; Client) supports soft AP (Access Point; WAP) role need not true access point and can make a plurality of terminals set up the mode of directly-connected network and then direct communication thereby provide a kind of, and do not support wireless direct-connected traditional WLAN (WLAN; Wireless Local Area Networks) STA also can join in the direct interconnection network of having set up with STA role, has ensured a favorable compatibility; That it adopts when connecting is WPS (Wi-Fi Protected Setup, Wi-Fi protects setting), can set up safe wireless network easily; In addition; Wireless direct connection also allow to connect all support wireless direct-connected equipment all to get into resting state in due course, thereby save power, and in traditional WLAN; AP (Access Point, access points) can not get into resting state; And its permission equipment supports concurrent connection, and promptly a wireless device can add in a plurality of wireless networks with multiple identity (soft AP, STA) simultaneously.
But in wireless direct interconnection network; In order to distinguish with traditional wlan network of not supporting wireless direct interconnection network; Wireless direct connection standard stipulates that clearly the form of the service set SSID (Service Set Identifier) of wireless direct interconnection network can only be with letter " DIRECT-" beginning, and to be right after two letters " xy " (xy can be any letter and number) then can be arbitrary content after the two.In WLAN, SSID is the sign of User Recognition place network normally, and often imports SSID to join in the corresponding network; So SSID has too many format restriction can increase user's probability of errors when importing; On the other hand, must also can make SSID long with " DIRECT-" beginning, thereby cause the layout of WLAN software not attractive in appearance; And cause SSID not make troubles to domestic consumer with Chinese named.
At present, projector equipment and wireless technology combine closely, make projector equipment effectively break away from the dependence to cable.Existing a kind of wireless display system such as one Chinese patent application 201110057730.1; It utilizes Ad-Hoc (point-to-point) pattern in 802.11 to transmit projection information; But still have following problem: wireless terminal is in case connect with projector equipment; Just can not communicate, and can only communicate, as not carrying out internet access etc. simultaneously with this projector equipment with other wireless device; In existing wireless display system, can only there be the equipment of folk prescription to get into battery saving mode, projector equipment and the wireless terminal that is connected with projector equipment can't get into battery saving mode simultaneously, can not reach energy-conservation maximization; The safety of cause 802.11 standards has multinomial, and complicated operation, is prone to cause puzzlement to the user, and the user can't set up the connection of safety with simple steps usually.These inferior positions influenced 802.11 with the combining of shadow casting technique.Thereby the method for releasing problem above a kind of can the solution just seems particularly important.
Summary of the invention
For solving the above problems, the present invention has designed a kind of wireless communications method and a kind of wireless direct-connected communication system.
Wherein wireless communications method has added the SSID mapping process based on Wi-Fi Direct, thereby can effectively solve in the wireless direct connection SSID problem of appointment arbitrarily.And the wireless direct connection communication terminal of design uses above-mentioned wireless communications method, and can need not AP between the device can directly connect.Form wireless direct connection communication system, this system comprises two wireless direct connection communication terminals at least.The present invention is used for directly connecting optical projection system; Image processing equipment is set up with projector equipment directly to be connected; Simultaneously image processing equipment still can join in other network, for the user provides efficiently, safety, can specify SSID and projection service that can concurrent connection.
A kind of wireless communications method; This method is based on Wi-Fi Direct; Adopt wireless direct connected mode to communicate between first wireless communication terminal and second wireless communication terminal, in the frame processing procedure of Wi-Fi Direct, add the SSID mapping process, can between the SSID of the SSID of direct linking format and any appointment of user or system, change; Make the SSID of direct interconnection network not start and be not subject to by User Defined with " DIRECT-".
Wherein said first wireless communication terminal and second wireless communication terminal all are operated in direct connection mode.And first wireless communication terminal is supported soft AP role at least, and second wireless communication terminal is supported STA role at least.
In the first wireless communication terminal side; System or user be the service set SSID of specific radio direct interconnection network arbitrarily; Second wireless communication terminal scans this and specifies SSID arbitrarily, before communicating pair sends and after receiving, all needs frame is carried out the SSID mapping treatment.For frame,, the SSID of direct linking format is mapped as the SSID of system or any appointment of user at transmit leg through mapping treatment; The recipient, the SSID of any appointment in the frame is mapped as the SSID of direct interconnection network form.
Above-mentioned wireless communications method SSID mapping steps is:
A) first wireless communication terminal obtains the SSID of user or system's appointment, is specified arbitrarily by system or user; The scanning of second wireless communication terminal obtains the specified SSID of first wireless communication terminal;
A) SSID to appointment adopts message digest algorithm to obtain the character string of a regular length;
B) letter " Direct-" and above-mentioned character string are merged, obtain the SSID of direct linking format;
C) corresponding relation between the SSID of the SSID of the above-mentioned appointment of preservation and direct linking format;
D) carry out the frame exchange, whether comprise wireless direct interconnection network SSID information element in the judgment frame.For receiving the frame that comprises direct interconnection network SSID,, replace with the SSID of appointment arbitrarily the SSID of direct interconnection network form according to the corresponding relation of above-mentioned appointment SSID with the SSID of direct linking format; And comprise direct interconnection network SSID frame for what will send, replace with the direct SSID of linking format the SSID of any appointment.
The invention allows for a kind of wireless direct connection communication system, this system comprises two Terminal Types, and the direct connection between the aforementioned wireless communications method realization equipment is adopted in communication between the terminal.This two Terminal Type is: first wireless communication terminal and second wireless communication terminal.Can set up direct interconnection network between a plurality of wireless communication terminals, and the SSID of direct interconnection network appointment arbitrarily.Wireless direct connection communication terminal serves as role's difference and the different module that comprises according to it.
Serve as soft AP's for need not; The wireless direct connection communication terminal that only serves as STA; It comprises: MAC Address multiple entity administration module, and for wireless direct connection communication terminal generates, preserves, manages a plurality of MAC entities, one is traditional wlan network service in the MAC entity; Another MAC entity then is the direct interconnection network service, thereby is that first wireless communication terminal provides concurrent connection; The scanning search module for aforementioned wireless direct connection communication terminal provides the ability of finding its wireless terminal, can adopt the method among the Wi-Fi Direct; Soft AP determination module, another wireless communication terminal of being responsible for finding with it consult to confirm that which wireless communication terminal serves as soft AP, and definite foundation can be the hardware handles ability and the control of software ability of communication terminal; The WPS administration module adopts the Wi-Fi protection to be provided with and sets up safely fast between the control appliance to connect; The authentication information memory module is connected used security related information for wireless direct its use of connection communication terminal storage Wi-Fi protects setting and another wireless communication terminal of its discovery to set up safety fast, like information such as certificate, keys; The SSID identification module according to the information element identifier of network type identifier in the frame and SSID, provides the function that whether contains wireless direct interconnection network SSID information element in the identification frame that its reception is sent for wireless direct connection communication terminal; The SSID mapping block is realized the SSID of direct linking format and is specified the conversion between the SSID, must be with the problem of " DIRECT-" beginning to solve SSID; The power supply energy-saving module, it adopts the power supply energy-efficient protocol of wireless direct connection definition, so that the equipment that connects all can get into energy saver mode.
For the wireless direct connection communication terminal that serves as soft AP, need comprise the module that above-mentioned wireless direct connection communication terminal that serves as STA role comprises: MAC Address multiple entity administration module, scanning search module, soft AP determination module, WPS administration module, authentication information memory module, SSID identification module, SSID mapping block, power supply energy-saving module.Also comprise DynamicHost protocol DHCP (Dynamic Host Configuration Protocol) administration module is set, be the STA automatic IP address allocation that connects with the above-mentioned wireless soft AP role who directly is connected communication terminal; The bridging management module is for the soft AP role and the STA role of wireless direct connection communication terminal provides bridging functionality.When the STA role of wireless direct connection communication terminal is connected with entity A P and during addressable the Internet so that with wireless directly be connected other device that the soft AP role of communication terminal connects also can be through wireless direct connection communication terminal access internet.
Above-mentioned first wireless communication terminal will provide the function of soft AP at least, and it adopts GO (Group Owner, the master control node) method that defines among the Wi-Fi Direct, in wireless direct connection communication system, serves as soft AP role; Second wireless communication terminal then provides the STA function at least; It adopts Client (client) method that defines among the Wi-Fi Direct; The role who in wireless direct connection communication system, serves as common STA uses the SSID mapping treatment, to reach the SSID purpose of appointment arbitrarily.First wireless communication terminal can serve as soft AP and STA role simultaneously in wireless direct connected system; Other wireless communication terminal that wherein soft AP role can be in the wireless direct connected system provides the entity A function that P is had; And the STA role of first wireless communication terminal can be the function that first wireless communication terminal provides other infrastructure network of access (like traditional wlan network); Thereby realize concurrent connection; For reaching above-mentioned functions, comprise the module that the aforementioned wireless direct connection communication terminal that serves as soft AP is comprised: MAC Address multiple entity administration module, scanning search module, soft AP determination module, WPS administration module, authentication information memory module, SSID identification module, SSID mapping block, power supply energy-saving module, DHCP administration module, bridging management module.
Second wireless communication terminal and first wireless communication terminal are set up direct interconnection network, and it serves as STA role in network, so it will provide the support to STA role at least, and it is optional to wireless direct-connected support.Whether second wireless communication terminal comprises different module according to it to the support of direct interconnection network.
When above-mentioned second wireless communication terminal was not supported wireless direct connection, it comprised at least: the WPS administration module, and it adopts the Wi-Fi protection to be provided with to set up safe being connected fast with another equipment; The authentication information memory module, be second wireless communication terminal storage its use the Wi-Fi protection to be provided with and set up fast safely and be connected used security related information with another wireless communication terminal of its discovery, like information such as certificate, keys.This moment, second wireless communication terminal then can only serve as the role of STA, in wireless direct connected system, used WPS to connect with the soft AP role of above-mentioned first wireless communication terminal.
When second wireless communication terminal was supported wireless direct connection, its module that comprises was aforementioned the module that the wireless direct connection communication terminal that serves as STA is comprised: MAC Address multiple entity administration module, scanning search module, soft AP determination module, WPS administration module, authentication information memory module, SSID identification module, SSID mapping block, power supply energy-saving module.
In above-mentioned wireless direct connected system, first radio communication and second wireless communication terminal adopt aforementioned wireless communications method to communicate.And for the communication terminal of supporting Wi-Fi Direct, need through aforementioned SSID mapping treatment, and for the conventional communication terminals of not supporting Wi-Fi Direct, because of its also restriction of unmatchful direct linking format SSID, so need not the mapping treatment through SSID.
Wireless direct connected system of the present invention can be used for optical projection system, and it comprises the image transmission apparatus that displayable image source is provided and the projector equipment of responsible display image.Above-mentioned image transmission apparatus adopts aforementioned wireless communications method that its image that will throw in is sent wireless signal and gives above-mentioned projector equipment, is carried out the reproduction of image by projector equipment.In above-mentioned wireless direct connection optical projection system, above-mentioned image transmission apparatus all comprises the aforementioned wireless communication terminal that directly is connected at least with above-mentioned projector equipment.And among the wireless direct connection communication terminal that both comprised, have at least a side that soft AP function is provided, provide safeguard for both set up direct interconnection network.
Above-mentioned image transmission apparatus possesses collection, and it needs the ability of content displayed, and can convert the need displaying contents into direct connection wireless signal, is transferred to above-mentioned projector equipment through adopting above-mentioned wireless direct connection communication means.In above-mentioned wireless direct connection optical projection system, image transmission apparatus is not only limited to PC, and also notebook computer, smart mobile phone, intelligent television etc. can be handled the wireless device of image.Wireless display equipment then can be the wireless device that projecting apparatus, display, intelligent television, LED display etc. can present image.
The present invention has designed a kind of wireless communications method and the wireless communication system that directly is connected; Owing to added the process of SSID being carried out mapping treatment; Make that the user can self-defined SSID; Thereby effectively solve in the wireless direct connection SSID problem of appointment arbitrarily, increased the convenience that the user uses wireless direct interconnection technique.And designed a kind ofly simultaneously based on wireless direct-connected communication terminal, and the communication means of this communication terminal adopts wireless direct connection communication means, and can need not AP between the communication terminal can directly connect.Be used for wireless direct connection optical projection system and guarantee that image processing equipment need not AP with projector equipment and directly is connected, image processing equipment still can join in other network simultaneously.The present invention has increased the convenience that the user uses wireless direct interconnection technique.
Description of drawings
Shown in Figure 1 is that wireless communications method shines upon flow chart;
Shown in Figure 2 is wireless direct connection communication system pie graph;
Fig. 3 is the wireless communication terminal composition diagram;
Shown in Figure 4 is the application scenarios figure of wireless direct connection communication system;
Shown in Figure 5 is that wireless direct connection optical projection system one of is used;
Shown in Figure 6 is two of wireless direct connection optical projection system application.
Embodiment
For further setting forth the present invention is the method and technology that achieves the goal and adopted, and wireless communications method proposed by the invention is specified with the wireless communication system step that directly is connected with instance below in conjunction with concrete accompanying drawing.
As shown in Figure 1, this Figure illustrates the mapping treatment schematic flow sheet of wireless communications method.Comprise first wireless communication terminal and second wireless communication terminal.Wherein first wireless communication terminal serves as the soft AP role among the Wi-Fi Direct, and second wireless communication terminal serves as the STA role among the Wi-Fi Direct., both need adopt the step among Fig. 1 that frame is handled when carrying out receiving frame, to realize the SSID purpose of appointment arbitrarily.
For first wireless communication terminal; It serves as soft AP role; Therefore can specify SSID by system or user at this end, but wireless direct connection can only be discerned the SSID with " Direct-" beginning, so the SSID of appointment need be mapped as the SSID of direct linking format.And for second wireless communication terminal, the scanning process of its communication Wi-Fi Direct can obtain the appointment in first wireless communication terminal, need be mapped as the SSID of appointment the SSID of direct linking format.First wireless communication terminal is the same with the mapping process of second wireless communication terminal, and this mapping process is:
Acquisition is by the SSID of user or system's appointment; SSID to appointment carries out message digest algorithm, like MD5 (Message-Digest Algorithm 5) algorithm, can obtain the character string of a regular length; The SSID of appointment is carried out after the MD5 computing; Can obtain two values of system of 128 (16 bytes) length, and the extreme higher position 0 of these 16 bytes, corresponding 16 the ASCII character values of these 16 bytes.Be connected " Direct-" with 16 ASCII character values that obtain, obtain the SSID of direct linking format.The SSID of appointment and the SSID of the direct linking format that obtains are kept in the structure struct CommonSSID, to confirm both corresponding relations.
In case obtain the corresponding relation of direct linking format SSID and specified format SSID, just can in follow-up frame transmittance process, replace to the SSID in the frame.At first wireless communication terminal and second wireless communication terminal,, specifically adopt following method for the frame that will send:
A) frame is resolved,, take out the SSID of the direct linking format in the frame according to the identifier of SSID information element;
B) in structure struct CommonSSID, find the SSID of direct linking format, and take out the SSID of any appointment in the structure;
C) and with the appointment SSID that finds replace the SSID of the direct linking format in the frame;
D) send the frame after the replacement.
And, specifically adopt following method for the frame that receives
A) frame is resolved,, take out the SSID of any appointment in the frame according to the identifier of SSID information element;
B) find the SSID of any appointment in the structure struct CommonSSID, and take out in the structure SSID of corresponding direct linking format with it;
C) and with the direct linking format SSID that finds replace the SSID of the appointment in the frame;
D) giving down one deck the frame after the replacement handles.
Be illustrated in figure 2 as wireless direct connection communication system pie graph.System comprises first wireless communication terminal that serves as soft AP and second wireless communication terminal that serves as STA; Wherein, First wireless communication terminal can only have one; Second wireless communication terminal then can be by a plurality of, and second wireless communication terminal can support direct interconnection technique also can not support direct interconnection technique.
Be illustrated in figure 3 as the wireless communication terminal composition diagram.As first wireless communication terminal, support Wi-Fi Direct and serve as soft AP role.Comprise MAC Address multiple entity administration module, scanning search module, soft AP determination module, WPS administration module, authentication information memory module, power supply energy-saving module to support Wi-Fi Direct.SSID identification module and SSID mapping block are accomplished radio communication.The DHCP administration module then is in charge of Dynamic Host Configuration Protocol server, so that be that second wireless communication terminal provides IP the address.The bridging management module then is responsible between the STA role of first wireless communication terminal and AP role, setting up bridge joint; When the STA role of first wireless communication terminal was connected to the Internet, second wireless communication terminal that is connected with the soft AP role of first wireless communication terminal then can pass through this bridging functionality access internet.
For second wireless communication terminal in the wireless direct connection communication system; When if this second wireless communication terminal is also supported directly to connect; Terminal structure is as shown in Figure 2; Comprise: MAC Address multiple entity administration module, scanning search module, soft AP determination module, WPS administration module, authentication information memory module, power supply energy-saving module, to support Wi-Fi Direct.SSID identification module and SSID mapping block are realized wireless communications method.Second wireless communication terminal uses the aforementioned wireless communications method and first wireless communication terminal to set up direct interconnection network, and can specify SSID arbitrarily.
If when second wireless communication terminal was not supported directly to connect, it was traditional WLAN terminal, and STA role can only be provided.It should comprise at least: WPS administration module, authentication information memory module.Its uses Wi-Fi to protect the method in being provided with and is linked into the soft AP role in first wireless communication terminal at this moment.
Shown in Figure 4 is the application scenarios figure of wireless direct connection communication system.
In Fig. 4, notebook and PDA (Personal Digital Assistant, personal digital assistant) support wireless direct interconnection technique, and projecting apparatus is not supported wireless direct interconnection technique.Wherein support direct-connected notebook to serve as soft AP and STA role simultaneously, and the STA role of notebook is connected with entity A P, sets up traditional wlan network and connect; The soft AP role of notebook then provides AP function for other terminal in the network, makes other terminal need not to be directly connected on the notebook through AP.For supporting direct-connected PDA, it serves as a plurality of STA roles simultaneously, and what make that it can be concurrent is connected in the direct interconnection network that traditional wlan network and notebook provide.For not supporting direct-connected traditional WLAN projecting apparatus, it can directly connect with the direct-connected notebook of support simultaneously.
In the present embodiment, notebook and PDA, notebook and projecting apparatus do not communicate through AP; They are to connect through the wireless communications method that proposes among the present invention; Through direct interconnection technique, there be not under the environment of AP notebook and PDA; But notebook and projecting apparatus direct communication, even also can communicate between PDA and the projecting apparatus through the soft AP role of notebook.And the SSID of the direct interconnection network that notebook provides need not to start with " DIRECT-".And,,, therefore just need not carry out extra processing to frame so just there is not the restriction of SSID form aspect because of itself not supporting direct interconnection network for not supporting direct-connected traditional WLAN projecting apparatus in the present embodiment yet yet.The standard procedure that its processing procedure only need be followed WLAN gets final product.
In the present embodiment, wireless direct connection optical projection system comprises at least: image transmission apparatus and a wireless display equipment.Wherein image transmission apparatus and wireless display equipment should have a side will comprise the aforesaid wireless direct jockey that serves as soft AP at least; Image transmission apparatus and wireless display equipment are set up direct interconnection network through aforesaid wireless direct method of attachment; And then the transmission data, need not the interference of AP.
The aforementioned wireless direct jockey that image transmission apparatus and wireless display equipment should have a side to comprise at least; Image transmission apparatus and wireless display equipment can arbitraryly serve as soft AP role by it, so the wireless direct jockey that image transmission apparatus and wireless display equipment are comprised has multiple combination.In the present embodiment, working as soft AP with image transmission apparatus and wireless display filling apparatus respectively explains.
As shown in Figure 5, image transmission apparatus serves as soft AP.In Fig. 5, notebook and projecting apparatus all comprise aforementioned wireless direct jockey, and notebook computer is supported wireless direct connection and serve as soft AP role that projecting apparatus then only serves as STA role.Projecting apparatus joins in the straight-forward network of notebook foundation, and then carries out the image transmission.And this moment, notebook provided DHCP and bridging functionality, and in other network that the STA role of notebook still can join, carried out the visit of the Internet.
As shown in Figure 6, the wireless display filling apparatus is as soft AP.In Fig. 6, the wireless display filling apparatus is as soft AP role.Wireless display equipment is supported wireless direct connection and serves as soft AP role that projecting apparatus is then supported wireless direct connection and only served as STA role.Notebook joins in the wireless direct interconnection network of projecting apparatus foundation, carries out the image transmission.And this moment, projecting apparatus provided DHCP function, and in other network that another STA role of notebook still can join, carried out the visit of the Internet.
More than be preferential execution mode of the present invention only, all combinations of under method used in the present invention, carrying out or change all are interpreted as in claim of the present invention.
Claims (9)
1. wireless communications method; It is characterized in that first wireless communication terminal and second wireless communication terminal are operated in direct connection mode, first wireless communication terminal is supported soft wireless access point AP role at least; And second wireless communication terminal is supported the client STA role; System or user are arbitrarily the service set SSID of the first wireless communication terminal specific radio direct interconnection network, and second wireless communication terminal scans this and specifies SSID arbitrarily, before communicating pair sends and after receiving, frame is carried out the SSID mapping treatment; At transmit leg, the SSID of direct linking format is mapped as the SSID of system or any appointment of user; The recipient, the SSID of any appointment in the frame is mapped as the SSID of direct interconnection network form.
2. according to the said wireless communications method of claim 1, it is characterized in that said SSID mapping treatment specifically comprises:
First wireless communication terminal obtains the SSID of user or system's appointment, and the scanning of second wireless communication terminal obtains the SSID that first wireless communication terminal obtains; SSID to appointment adopts message digest algorithm to obtain the character string of a regular length; " Direct-" merged with above-mentioned character string, obtain the SSID of direct linking format; Preserve the SSID of above-mentioned appointment and directly the corresponding relation between the SSID of linking format in structure.
3. according to the said wireless communications method of claim 1, it is characterized in that, in follow-up frame transmittance process, the SSID in the frame is replaced; For the frame that will send; Frame is resolved,, take out the SSID of the direct linking format in the frame according to the identifier of SSID information element; In structure, find the SSID of direct linking format, and take out the SSID of any appointment corresponding in the structure; And with specifying SSID to replace the SSID of the direct linking format in the frame; Send the frame after the replacement.
4. according to the said wireless communications method of claim 1, it is characterized in that, the frame that receives; Frame is resolved; According to the identifier of SSID information element, take out the SSID of any appointment in the frame, in structure, seek the SSID of any appointment; Take out in the structure SSID of corresponding direct linking format with it, and replace the SSID of appointment in the frame with direct linking format SSID.
5. according to the said wireless communications method of claim 2; It is characterized in that in the frame exchange, whether comprise wireless direct interconnection network SSID information element in the judgment frame; For receiving the frame that comprises direct interconnection network SSID; Replace with the SSID of direct interconnection network form to the SSID of arbitrarily appointment according to mapping relations, comprise direct interconnection network SSID frame, replace with the direct SSID of linking format according to mapping relations the SSID of any appointment for what will send.
6. a wireless direct communication system is characterized in that, comprises first wireless communication terminal and second wireless communication terminal; Set up direct interconnection network between a plurality of wireless communication terminals; And the SSID of direct interconnection network appointment arbitrarily, first wireless communication terminal can serve as soft AP and STA role simultaneously, and second wireless communication terminal serves as STA role; Use the SSID mapping treatment; Realize any appointment of SSID, wherein, the soft AP role of first wireless communication terminal provides entity A P for other wireless communication terminal in the wireless direct connected system; STA role is that first wireless communication terminal provides the ability that inserts other infrastructure network, realizes concurrent connection.
7. wireless direct communication according to claim 6 system; It is characterized in that second wireless communication terminal for only serving as STA comprises: MAC Address multiple entity administration module; For system generates, preserves, manages a plurality of MAC entities, be that first wireless communication terminal provides concurrent connection; The scanning search module is searched other wireless devices; Soft AP determination module consults to confirm that which wireless communication terminal serves as soft AP; Setting up safety between the WPS administration module control appliance fast connects; The authentication information memory module is wireless direct connection communication terminal storage security information; The SSID identification module is according to the information element identifier of network type identifier in the frame and SSID, for system provides in its frame that receives, sends of identification whether contain wireless direct interconnection network SSID information element; The SSID mapping block is the SSID of direct linking format and specifies between the SSID and change.
8. wireless direct communication according to claim 6 system; It is characterized in that; Said SSID mapping treatment specifically comprises: first wireless communication terminal obtains the SSID of user or system's appointment, and the scanning of second wireless communication terminal obtains the SSID that first wireless communication terminal obtains; SSID to appointment adopts message digest algorithm to obtain the character string of a regular length; Letter " Direct-" in the service set and above-mentioned character string are merged, obtain the SSID of direct linking format; Preserve the SSID of above-mentioned appointment and the direct corresponding relation between the SSID of linking format.
9. wireless direct communication according to claim 7 system is characterized in that, when first wireless communication terminal also need serve as soft AP role, the terminal further comprises: the DHCP administration module: be connected STA automatic IP address allocation; The bridging management module is that soft AP role and STA role provide bridging functionality.
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