CN1627716A - Intelligent method for building up wired device and wireless devices, and method for widening applications - Google Patents
Intelligent method for building up wired device and wireless devices, and method for widening applications Download PDFInfo
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Abstract
The method is not limited by AP access and takes full advantages of lots of resources and services on wired device and mobile features of wireless device. Building up network includes steps: self-building up wireless/wired self configured network (Ad-Hoc); through application and competition process, a device of possessing wireless/wired double linkage function becomes as a virtual gateway, and issues message of gateway to wireless/wired Ad-Hoc; devices in Ad-Hoc received message of gateway sets up default route as virtual route. Forwarding process is carried out through virtual gateway so as to realize commutative access for data and resources sharing between devices cross-network section. Widening application method includes: through issuing message of gateway, device of possessing wireless connection and being able to access Internet connection becomes Internet gateway; through Internet gateway, wireless client end accesses Internet.
Description
Technical field
The present invention relates to the expansion technique of wireless network, relate to the intelligent networking method of wireless device and wireline equipment and the expansion application process of this network-building method or rather.Intelligent network by the inventive method establishment, be to realize that between wireline equipment and wireless device the user finds and maintenance, the forwarding of multi-case data, the forwarding and the route of IP bag are specified, and numerous mechanism such as issue of the intelligence of gateway and other service and maintenance, make it to form unified resource-sharing and the platform that exchanges mutually,, also provide the shared method of a wireless device access the Internet by expansion application process of the present invention.
Background technology
Along with the maturation day by day of the various standards of WLAN (wireless local area network) 802.11 protocol suites and the release of new standard, get up based on the access of WLAN (wireless local area network) also increased popularity, falling of wireless device price particularly, more impel the user select this convenience and flexibly the wireless networking mode come constructing local network.
At present, the wireless device access to LAN, it is main that access point apparatus (AP:Access Point) realizes by connecting, AP is used to serve as management and Control Node.Function ratio AP preferably can also be given the wireless device distributing IP address of inserting automatically, perhaps makes it to have the function that multicast is transmitted.
Except the AP connected mode, can also select wireless point-to-point (Ad-Hoc) pattern during wireless networking.The Ad-Hoc pattern is a kind of networking mode of equity.When the wireless device with the networking of Ad-Hoc pattern is arranged on wireless network on the same set of service sign (Ssid), will be from physically setting up an independently wireless network.Each wireless network equity has equipment and inserts facility, movably characteristics.
But how the wireless network with this equity is connected with other heterogeneous network, for example is connected with cable network, according to the knowledge of the applicant, and still ripe without comparison at present solution.
Having only in the network environment of wireline equipment, under the prerequisite that does not increase routing device, adopt traditional inter-network section, the technical scheme of dual link mode, also just set up physical condition from a wired segment to another wired segment, it is not intelligent networking, and, still do not solve wired and wireless between the network-building method problem of heterogeneous network; In addition, there is very big difference, as IP address, gateway, name server (DNS) etc. difference fully to the configuration of wireless network with to the configuration of traditional cable network; With the exception of this, wireless network also need wireless device when connecting set such as: set of service sign (Ssid), operational mode, WEP (Wired Equivalent Privacy) encrypts and many parameters such as key.Above-mentioned aspect all is to put the problem that need solve when realizing convenient networking between cable network and wireless network.
And, except communication path physically will be arranged, also to build the path of IP layer in order to reach the purpose of networking between cable network and wireless network.The IP bag is wanted the inter-network section, and the routing forwarding mechanism of IP bag must be arranged, and is used for a kind of network is connected the IP bag of receiving, forwarding side by side is a to be connected to another kind of network.Need to consider efficiency owing to transmit, just can not be placed on the application layer and do, will be placed on usually and finish than bottom, such as Drive Layer.And in order logically to delimit the scope of intelligent network, a necessary self-built cover user's discovery mechanism, mutual discovery when this mechanism is mainly finished networking, with receive the maintain message regularly send, be used for safeguarding the user of current online (network), this method realizes that with the traditional multicast that utilizes reciprocity network's mode is consistent.
How to utilize the existing resource of cable network better, and the characteristics of the unique conveniently moving of fusing wireless network, the focus that wireless application is expanded become.The intelligent networking of wireline equipment and wireless device can be realized mutual resource-sharing, also can be integrated with ample resources and the service that spider lines itself has effectively, issues to wireless network.Like this, the application of at present narrow relatively WLAN (wireless local area network) will be expanded greatly.
Summary of the invention
The objective of the invention is to design a kind of wireline equipment and wireless device intelligent networking method, the restriction that not inserted by AP, make full use of the convenient characteristics that move of wireless device, effectively ample resources on the wireline equipment and service are issued to wireless device, realize mutual resource-sharing, expand the application of WLAN (wireless local area network).
The objective of the invention is to be achieved through the following technical solutions: a kind of wireline equipment and wireless device intelligent networking method, the MANET that will be made up by wireline equipment connects into virtual network with the MANET by wireless builds, realize mutual discovery and resource-sharing between wireless device and wireline equipment, it is characterized in that comprising following treatment step:
A. each online Wireless/wired equipment is declared the information that exists of self in the multicast mode, with record on the network topology mapping table of oneself current received send Wireless/wired equipment and the maintaining network Topological Mapping table that has message, scope by the fixed Wireless/wired MANET separately of this voting, existing has device role information in the message, this equipment can be the service role that conventional character maybe can provide certain service;
B. by equipment in the Wireless/wired MANET, become virtual gateway by application and competition process, and to wire/wireless MANET publishing gateway message, the role in the gateway messages is inter-network section gateway role with Wireless/wired dual link function;
C. receive the equipment in the Wireless/wired MANET of gateway messages, the route of acquiescence is set to this virtual gateway when using virtual gateway, change into use virtual gateway role with role with equipment of itself, IP bag routing forwarding and multicast repeating process by virtual gateway are realized mutual discovery and resource-sharing between wireless device and wireline equipment in the Wireless/wired ad-hoc network.
In the described steps A, declare the information that exists of self in the multicast mode, comprise initiatively sending self-defining Hello bag when new equipment is reached the standard grade, the equipment of having reached the standard grade is responded this new equipment and timed sending Hello bag in the maintenance period of equipment self with the Hello bag of self.
Also comprise in the described steps A, when equipment off-line, initiatively send deferred information, receive that the equipment of this deferred information is deleted it from the network topology table of self.
Application competition process among the described step B further comprises:
B1. the equipment that has Wireless/wired dual link function specifies wire/wireless second to connect on former Wireless/wired first connection basis again, makes to have the function of using wireless network card and wired network adapter simultaneously;
B2. start the route service function, set up IP layer path, make to have IP bag forwarding mechanism;
B3. restart maintenance mechanism, connect the corresponding Hello bag of transmission at two;
B4. equipment is competed gateway, and competing successful equipment becomes virtual gateway, carries out the gateway issue to two connections, sends as the gateway messages of safeguarding that gateway and notification gateway change.
Among the described step C, the IP of virtual gateway bag is transmitted and multicast is transmitted, and comprising: Wireless/wired Wireless/wired equipment in networking sends the Hello message that contains its role and device type to virtual gateway; Virtual gateway is analyzed Hello message, the role during for the role that uses virtual gateway and as the connection of inter-network section, the Hello message multicast of this Wireless/wired equipment is transmitted to the cable/wireless device of another network segment and the IP bag that receives in wired connection and the wireless connections is transmitted mutually.
Purpose of the present invention also is achieved through the following technical solutions: the expansion application process of a kind of wireline equipment and wireless device intelligent networking method is characterized in that comprising:
A. have wireless connections and can visit the Internet gateway that Internet is connected by a plurality of, issue the gateway maintain message of self separately to network;
B. any one wireless client receives the gateway maintain message by a plurality of Internet gateway issues, and these gateway maintain message of buffer memory;
C. when wireless client inquiry Internet gateway, obtain all Internet gateway informations;
D. wireless client is selected to use one of them Internet gateway, and the default gateway of oneself is set to the Internet gateway of this selection, and sends the request of visit Internet network to this Internet gateway;
The e.Internet gateway carries out the address transition proxy surfing, visits the Internet network and carry out address transition the network information that the Internet network returns is transmitted to wireless client.
Wireline equipment of the present invention and wireless device intelligent networking method mainly comprise three processes: the realization of simple MANET; The networking of inter-network section realizes; Realization with the issue of multiple service intelligence.Three mutual relations of process are: simple MANET is the basis that forms the networking of inter-network section, has only the simple MANET of having realized non-heterogeneous network earlier, just can further utilize second connection procedure, forms virtual gateway; Virtual gateway is in case form, just can utilize the issue certainly of service, from the characteristics of safeguarding, by virtual gateway to two heterogeneous network publishing gateway information, based on this intelligence issue, the user can inquire about and be provided with expediently, and transmits by virtual gateway, thereby, realized the purpose of inter-network section intelligent networking.
The scheme of wireline equipment of the present invention and wireless device intelligent networking, be particularly suitable for carrying business people's use of notebook computer, wireless device is both MANETs at any time each other, also can insert easily in the traditional cable LAN environment, and the restriction that not inserted by AP.This intelligent network forms the information issue and the platform that exchanges between a heterogeneous network, can use easily on this platform by being integrated with the various services that spider lines provides out, as any one wireless client, the Internet gateway access Internet network that can optionally use issue to come out is exactly that it expands an example of using.
The present invention not only provides a whole set of implementation method for setting up self-defining intelligent network between wired and wireless isomer network, also provides the technical scheme reference for the intelligent networking between other heterogeneous network.
Use method of the present invention to make up virtual network, in the interim network environment that does not have AP to insert, the equipment that can make wireless self-networking is visited the resource of cable network easily by operating software, makes cable network realize resource-sharing and exchange in real time with wireless network.Simultaneously expansion application process of the present invention also provides the shared scheme of a wireless client access Internet, thus big convenience user's the application of having used and expanded WLAN (wireless local area network).
Description of drawings
Fig. 1 is the structural representation of inter-network section networking plan of the present invention;
Fig. 2 is the FB(flow block) of wireless client competition the becoming virtual gateway in the wireless self-networking;
Fig. 3 is the FB(flow block) that the Wireless/wired client in the Wireless/wired MANET connects and use virtual gateway;
Fig. 4 is that virtual gateway carries out the regularly FB(flow block) of maintenance;
Fig. 5 is that virtual gateway carries out the FB(flow block) that message sink is handled;
Fig. 6 is an Internet gateway issue FB(flow block);
Fig. 7 is that the Internet gateway uses FB(flow block);
Fig. 8 is on the notebook computer that has wired and wireless dual link, the process schematic block diagram of wireless network when realizing the virtual gateway function and the mutual visit data of cable network, shared resource;
Fig. 9 is one to have wireless connections and can visit notebook that Internet is connected the FB(flow block) of Internet gateway service is provided.
Embodiment
Wireline equipment and wireless device interconnect the realization communication, at first, need possess the connection on the physical path, and corresponding bag forwarding mechanism is provided; Secondly, need control connection both sides' route, all connect each other by the physical path of appointment with assurance.
Based on above-mentioned two main points, the inventive method is opened routing forwarding service and self-built multicast forwarding service by wired and wireless two dual link, realizes a simple global function gateway (virtual gateway), and issues this virtual gateway; Secondly, distinct device type (wired and wireless) client makes that by being connected to the virtual gateway of appointment the route of acquiescence is all pointed to the virtual gateway that issue is come out separately, thereby, formed the intelligent network that wireline equipment is connected with wireless device.
The structure of this intelligent network is fairly simple at the initial stage of foundation, only is the networking of network of the same type, finds mutually by multicast mechanism in the network and safeguards.When using the function of inter-network section, by certain equipment that has the dual link condition in the simple network (the artificial appointment), competition earlier becomes virtual gateway, in case compete successfully, this virtual gateway just can be intelligently on two network segments issue connect the information of gateway, any client query in two network segments is after this information, through changing the setting of default route and self-role, become the role who uses gateway, and embody in the Hello that after it, the sends bag.During Hello bag that virtual gateway is received in forwarding, according in the bag with information (as the role etc.) decision whether transmit, thereby reach the effect that intelligence limits the virtual network scope, realized the manageability of networking.Virtual gateway is integrated the Internet resources of two network segments, and intelligence issue and maintenance are carried out in the service that provides out.
The intelligent networking of wireline equipment and wireless device integral body comprises three implementation procedures: realize simple MANET as a whole; Realize the networking of inter-network section; With the issue of the multiple service intelligence of realization.The mutual relation of three is: simple MANET, promptly from organizing WLAN (wireless local area network) and cable LAN, simple MANET is the basis that forms the networking of inter-network section, has only the simple MANET of having realized non-heterogeneous network earlier, just can further utilize second connection (when being connected to wireless connections as if first, then second connection is wired connection, otherwise too), form virtual gateway; Virtual gateway just can utilize the issue certainly of service, safeguard characteristics certainly to two heterogeneous network publishing gateway information, and had this intelligence to issue just in case form, and the user could inquire about expediently and be provided with, thereby, realized the purpose of inter-network section intelligent networking.By the virtual network that virtual gateway constructs, the user just can issue out relevant service according to the condition of self, shares to other user and uses; And the virtual network that other user constructs by virtual gateway by inquiry and setting, is used the service of issuing out.
After successfully constructing virtual network, can think to a great extent that it is consistent that this virtual network is closed network with general inter-network by virtual gateway.Because the connection of IP layer guarantees, so the network equipment that originally can't visit in just can the accesses virtual network, also can utilize the file-sharing function on the platform in addition, when visit, need not consider the position that it is actual, thereby form the resource-sharing of unified mode.
Simple MANET is meant that the mechanism of utilizing multicast on anisomeric network is found mutually, the automatic peer-group network process of safeguarding.Both can be applicable to MANET, also can be used for MANET based on wireless network based on cable network.Wireless self-networking is meant the MANET of wireless device under the Ad-Hoc pattern, may also contain wireless relay in the time of MANET.
The simple MANET of specific implementation comprises following three kinds of processes: discovery, maintenance and off-line.
User's discovery procedure: when a new user reaches the standard grade, will send out the Hello bag to network on one's own initiative.If have miscellaneous equipment on the network this moment, then this new user is added in the network topology mapping table of oneself, and this equipment of newly reaching the standard grade is responded by the Hello bag of oneself, the new like this user who reaches the standard grade has also finished user's discovery.
Each equipment all will be safeguarded the network topology mapping table an of the whole network when operation, deposited the information of the current all devices of having found in the table.The network topology mapping table is made up of two parts, and the first is placed the information of direct connection device; It two is the information (can only transmit the equipment of finding by miscellaneous equipment) of placing indirect connection device.
Hello message is the basis that MANET is set up, when new user reaches the standard grade, send, needs to network on certain equipment send when responding, with timed sending in the maintenance period of itself, promptly by the existence of Hello bag to network declaration oneself, thereby, can realize user's discovery and maintenance.
The user finds to realize by multicast, equipment sends self-defining Hello bag and safeguards corresponding network topology mapping table, for wireless device, in order to eliminate the problem of wireless monolateral property, when the user finds, taked the method for bilateral affirmation, for gateway, then can make the decision of whether transmitting according to the Role Information of band in the Hello bag.The multicast bag is not followed the rule of route, and the routing forwarding service does not support multicast to transmit yet.So multicast is transmitted in application layer and is realized, the needs that the user finds when making up at virtual network, and the needs of some data forwarding, and carry out specific forwarding.
User's maintenance process: each equipment in the MANET is timed sending Hello bag all, an equipment is when receiving the Hello bag of a corresponding device, just upgrade the preventive maintenance time of the corresponding device in self network topology mapping table, if certain unit exception rolls off the production line, then can be after surpassing a fixed time (for example: the transmission cycles of 3 Hello bags) still can not receive under the situation of corresponding Hello bag, think that this user rolls off the production line.
User's off-line procedure: during any equipment off-line in the MANET, the capital initiatively sends deferred information-Leave message, make other user in the network can learn the variation of this user offline fast, receive in the MANET that the equipment of this message will be deleted this equipment from the network topology mapping table of oneself.
Simple MANET is safeguarding dynamically under the interaction of these three kinds of processes that network topology mapping table on each equipment is (but for wireless network just, in order to eliminate monolateral property, the process that in the MANET process, has also added bilateral affirmation, wireless Hello bag down can be transmitted, to support the realization of wireless relay).
For fear of or reduce to receive and transmit unnecessary bag, also can add the judgement of User Priority during reception and transmit the optimizing process judged etc.
Realize the networking process of inter-network section below in conjunction with accompanying drawing 1,2 explanations.
As shown in fig. 1, the networking of inter-network section relates generally to the three parts: simple cable network 11, simple wireless network 12 and a virtual gateway 13.Simple cable network 11 is held by 0-N cable customer, only uses the wired connection networking to form; Simple wireless network 12 only uses the wireless connections networking to form by 0-M wireless client.A virtual gateway 13, at two network interface cards of run-time binding (wired network adapter and wireless network card), send the Hello bag and transmit data (shown in solid arrow among the figure and dash-dot arrows) to two connections (simple wireless network 12 and simple cable network 11) respectively.
Two operable network interface cards should be arranged on the virtual gateway, and embodiment of the invention supposition wireless network card is the major network card, uses wired network adapter when changeing second network interface card.Before virtual gateway is applied for the competition gateway as yet, also be a wireless client in the simple wireless self-networking, just can become virtual gateway when application and through after competing successfully.
Accompanying drawing 2 illustrates the process of the wireless client competition virtual gateway with two network interface cards.
Network configuration is relatively stable and simple when guaranteeing the networking of inter-network section, and the inventive method determines that virtual gateway has uniqueness.And in order to guarantee this uniqueness, serving as of virtual gateway must be through competition process, and the principle of competition is: it is preferential that first to file is competed; Find then all inefficacies of conflict.
Step 201, suppose that a wireless client with two network interface cards in the simple wireless self-networking will compete virtual gateway, the appointment that at first will to carry out second connection be wired connection makes this wireless client have the function of using wireless network card and wired network adapter simultaneously;
Step 202 starts the route service function.Realize two internetwork intercommunications, make gateway form forwarding mechanism, must set up IP layer path to solve the IP bag forwarding problems of virtual gateway, the forwarding service of this IP layer can solve from a kind of bag that is connected to another kind of connection and transmit.
Step 203, restart Hello bag maintenance mechanism, stop Hello bag maintenance process simple in the original wireless self-networking, connect the corresponding Hello of transmission at two and wrap, have different information in two Hello bags, for example, send out by different network interface cards, with the IP address different, but for virtual gateway, user profile is unique;
Step 204 is to 206, begin to compete gateway, judge whether to exist conflict by whether detecting the gateway information that miscellaneous equipment sends in a period of time, if then compete failure when detecting the gateway information that miscellaneous equipment sends in a period of time, if two equipment are competed then all inefficacies of application of gateway simultaneously, if an existing virtual gateway exists, then lost efficacy in the application of back competition.Compete successful equipment and become gateway, to carry out the gateway issue, send GatewayProvider message, to inform other user of two network segments, can be with GatewayProvider message as gateway information, the information of gateway and the mode of informing that changes as notification gateway are safeguarded in gateway issue conduct.Gateway information comprises gateway IP, gateway user name etc.
After virtual gateway was set up, the flow process of use virtual gateway can be referring to accompanying drawing 3.
Step 301, any client in the Wireless/wired network can connect gateway at any time, when connecting gateway, at first whether inquiry has gateway, promptly inquire about the gateway information of issuing out by virtual gateway (gateway IP, gateway user name etc.), have gateway information that gateway then has been described.
Step 302 if inter-network section function is used in decision, then connects gateway, and the default gateway that is about to client is made as the virtual gateway that issue is come out, and changes user's role itself, becomes the role who uses inter-network section gateway from the role of domestic consumer.
Role herein, no matter each equipment when being meant networking be the equipment in cable network, or the equipment in wireless network, or virtual gateway, all being associated with self a role, the role has represented current use identity of equipment and pairing function scene classification.For example: the role of the conventional equipment under the simple MANET is a conventional character; Virtual gateway is inter-network section gateway role; It may be the role of corresponding with service that the equipment of certain service is provided, as the role of Internet gateway is provided; Use virtual gateway just to be to use the gateway role to wait (determining) by the flag bit that changes in the gateway information.
Equipment in this Wireless/wired network by oneself is set default gateway and carry out diversification in role after, the default route of Device IP bag will be made as virtual gateway.It safeguards that regularly the information in the Hello bag that sends out also will change to some extent, judges whether its data are transmitted with this for virtual gateway, so that respective change takes place heterogeneous network intelligently.
Step 304,305, equipment in this Wireless/wired network, the Hello that initiatively sends by each equipment on the network wraps, can find the user terminal on another wire/radio network, seen the facility information of can't see originally, and then, realize resource-sharing to each other (scope that can use the user by device software is confined realizes indiscriminate visit etc.) by information issue and reciprocal process.
Virtual gateway is finished by the service of transmitting of IP bag the forwarding of IP bag, and virtual gateway can be transmitted the IP bag of receiving in wired connection and the wireless connections mutually, and the service of transmitting of IP bag is finished in Drive Layer, to raise the efficiency.
Maintenance certainly after virtual gateway is competed successfully, issue process certainly are dynamic processes, in this process, the virtual gateway periodically user in two network segments is announced different gateway link informations, i.e. virtual gateway link information in cable network and the virtual gateway link information in wireless network; Also to constantly check the conflict that whether occurs between gateway simultaneously; When initiatively cancelling the gateway service of oneself, can notify the user who uses gateway to make corresponding response apace, or, can in the regular hour, find this situation and make corresponding response as the user who uses gateway after externally network environment changes, do not receive the maintain message of virtual gateway.More than these all are the advantages that the virtual gateway intelligent maintenance brings.
Even aspect the application of virtual gateway, also can find out the role of gateway dynamic change, but because gateway has issue certainly, so user's inquiry mechanism can be unanimity.Certainly the maintenance of virtual gateway is realized by two parallel procedures, comprises that gateway is from safeguarding and gateway messages reception processing.Wherein the flow process regularly safeguarded of gateway is shown in Fig. 4, and gateway messages receives handling process and is shown in Fig. 5.
Referring to Fig. 4, step 401, any one wire/wireless client are carried out gateway from safeguarding in each maintenance period regularly.
Step 402 judges whether self is gateway (judging by the flag bit in the gateway messages), is then execution in step 403,404 of gateway, is not then execution in step 405 to 407 of gateway;
Step 403,404 sends to wireless network respectively and contains the GatewayProvider gateway messages that connects the major network card, sends to cable network and contains the GatewayProvider gateway messages that connects second network interface card.
Step 405 is to 407, checks the whether overtime inefficacy of gateway service intervals, if the upper layer application layer of overtime then announcement apparatus, gateway is unavailable.
Referring to Fig. 5, step 501,502, any one receives the wire/wireless client of GatewayProvider gateway messages, judge at first whether oneself is gateway (judging by the flag bit in the gateway messages), being then execution in step 503,504,509 of gateway, is not then execution in step 505 to 509 of gateway.
Step 503,504,509 judges whether to exist the gateway conflict, the upper layer application layer of announcement apparatus when having the gateway conflict, and there is conflict in gateway; There is not gateway when conflict new gateway preventive maintenance time more then.
Step 505 at first judges to 509 whether oneself will use gateway when oneself being not gateway, new gateway preventive maintenance time more then when not using gateway; When using gateway, then further check the whether overtime inefficacy of gateway service intervals, if overtime inefficacy, announcement apparatus upper layer application layer then, the gateway of setting is unavailable, if not overtime then new gateway preventive maintenance time more.
Realize the inter-network section intelligent networking except utilizing virtual gateway, other is integrated with the service that spider lines provides out, also can utilize this intelligence issue and maintenance mechanism, make distinct device serve as same service role, the expansion application process of wireline equipment promptly of the present invention and wireless device intelligent networking method.For example: the issue of a plurality of Internet gateway service and use.Any one meets the equipment of enabling Internet gateway condition, and the service of Internet gateway just can be provided to other user; When using its when service, dynamically inquire current what the Internet gateways that have, determine to use wherein which by the user, pass through this Internet gateway access Internet network again.Fig. 6 illustrates Internet gateway issuing process, and Fig. 7 illustrates the process of using the Internet gateway service.
Referring to Fig. 6, step 601, any one wireless client is designated as the connection that can visit Internet;
Step 602 is enabled the Internet gateway;
Referring to Fig. 7, step 701, any one wireless client, the Internet gateway that inquiry exists;
Step 702, this wireless client, the default gateway of oneself are set to the Internet gateway of this inquiry acquisition and name server (DNS) are set;
Step 703 is by the Internet gateway access Internet network of this inquiry acquisition.
Fig. 8, Fig. 9 illustrate two typical application examples respectively.Wherein Fig. 8 has stressed the message interaction process of inter-network pass user's discovery procedure, and Fig. 9 has stressed the reciprocal process that an Internet gateway service is provided.
Referring to Fig. 8, realize on the notebook computer of wired and wireless dual link that wired network is connected the function of networking with wireless network having, serve as virtual gateway by such notebook computer, desktop computer on the cable network and other equipment with radio function can be coupled together, visit data is mutually realized resource-sharing each other.
The role of wireless client A is a conventional character in the wireless network, the role of wireless client B is to use the gateway role in the wireless network, virtual gateway is C (a dual link notebook computer), the cable customer holds the role of D (as desktop computer) to be to use the gateway role in the cable network, in the cable network cable customer to hold the role of E (as desktop computer) be conventional character.
(1) A sends Hello message to C, and characterizing the party A-subscriber in the message is the wireless user, and the role is a conventional character;
(2) B sends Hello message to C, and characterizing the party B-subscriber in the message is the wireless user, and the role is for using the gateway role;
(3) C according to Hello message judge current have from wireless be forwarded to wired connection;
(4) C transmits the Hello message of B to E;
(5) C transmits the Hello message of B to D;
(6) D receives the Hello message of B, finds or safeguard B;
(7) D sends Hello message to C, and characterizing D user in the message is wire user, and the role is for using the gateway role;
(8) C judge current have from wired be forwarded to wireless connection;
(9) C transmits the Hello message of D to A;
(10) C transmits the Hello message of D to B;
(11) B receives the Hello message of D, finds or safeguard D.
Through said process, C is according to the role of equipment in the Hello message, and determine whether to transmit: B, D are to use the gateway role, through the forwarding mechanism of C, makes D receive the Hello message of B, finds or safeguard B, makes B receive the message of D, finds or safeguard D.
Referring to Fig. 9, have wireless connections and can visit the notebook computer that Internet is connected, the service of an Internet gateway just can be provided.When a plurality of notebook with such condition is arranged, can provide an Internet gateway service by issuing process.Other wireless device can use one of them Internet gateway service selectively, visits the Internet network.
(1) maintain message of Internet gateway 1 issue is received by wireless client;
(2) gateway messages of this Internet gateway 1 of wireless client buffer memory;
(3) maintain message of Internet gateway 2 issues is received by wireless client;
(4) gateway messages of this Internet gateway 2 of wireless client buffer memory;
When (5) wireless client is inquired about the Internet gateway, return the information of all Internet gateways;
(6) wireless client selects to use Internet gateway 1;
(7) wireless client sends the request of visit Internet network to Internet gateway 1;
(8) Internet gateway 1 carries out address spaces, proxy surfing;
(9) Internet gateway 1 visit Internet network;
(10) the Internet network returns the network information;
(11) Internet gateway 1 carries out address transition, and the network information of returning is transmitted to wireless client.
Through said process, wireless client is by selecting Internet gateway 1 or Internet gateway 2, with regard to addressable Internet network and obtain the return information of Internet network.
The applicant notices, recently the Centrino notebook computer with mobility of Tui Chuing, provide the self radio chip functions, this function provides hardware condition for realizing technical scheme of the present invention, the present invention can be on it at any time can the basis for the dual link of utilizing, by increasing numerous mechanism such as user's discovery, multicast forwarding, routing forwarding and the issue of gateway intelligence, wireless self-networking and traditional cable network are linked to be an intelligent network, for the flexible access scheme of exempting from AP provides effective solution route.
Claims (14)
1. wireline equipment and wireless device intelligent networking method, the MANET that will be made up by wireline equipment connects into virtual network with the MANET by wireless builds, realize mutual discovery and resource-sharing between wireless device and wireline equipment, it is characterized in that comprising following treatment step:
A. each online Wireless/wired equipment is declared the information that exists of self in the multicast mode, with record on the network topology mapping table of oneself current received send Wireless/wired equipment and the maintaining network Topological Mapping table that has message, by the fixed scope of Wireless/wired MANET separately of this voting, existing has device role information in the message, this equipment can be the service role that conventional character maybe can provide certain service;
B. by equipment in the Wireless/wired MANET, become virtual gateway by application and competition process, and to wire/wireless MANET publishing gateway message, the role in the gateway messages is inter-network section gateway role with Wireless/wired dual link function;
C. receive the equipment in the Wireless/wired MANET of gateway messages, the route of acquiescence is set to this virtual gateway when using virtual gateway, change into use virtual gateway role with role with equipment of itself, IP bag routing forwarding and multicast repeating process by virtual gateway are realized mutual discovery and resource-sharing between wireless device and wireline equipment in the Wireless/wired ad-hoc network.
2. wireline equipment according to claim 1 and wireless device intelligent networking method, it is characterized in that: in the described steps A, declare the information that exists of self in the multicast mode, comprise and initiatively send self-defining Hello bag when new equipment is reached the standard grade, the equipment of having reached the standard grade is responded this new equipment and timed sending Hello bag in the maintenance period of equipment self with the Hello bag of self.
3. wireline equipment according to claim 1 and wireless device intelligent networking method, it is characterized in that: also comprise in the described steps A, when equipment off-line, initiatively send deferred information, receive that the equipment of this deferred information is deleted it from the network topology table of self.
4. according to claim 1 or 2 or 3 described wireline equipments and wireless device intelligent networking method, it is characterized in that: deposit the information of direct connection device in the described network topology mapping table and transmit the information of the indirect connection device that could find by miscellaneous equipment.
5. wireline equipment according to claim 1 and wireless device intelligent networking method is characterized in that: the application competition process among the described step B further comprises:
B1. the equipment that has Wireless/wired dual link function specifies wire/wireless second to connect on former Wireless/wired first connection basis again, makes to have the function of using wireless network card and wired network adapter simultaneously;
B2. start the route service function, set up IP layer path, make to have IP bag forwarding mechanism;
B3. restart maintenance mechanism, connect the corresponding Hello bag of transmission at two;
B4. equipment is competed gateway, and competing successful equipment becomes virtual gateway, carries out the gateway issue to two connections, sends as the gateway messages of safeguarding that gateway and notification gateway change.
6. wireline equipment according to claim 5 and wireless device intelligent networking method is characterized in that: equipment among described step B4 competition gateway, the first to file competition preferentially become virtual gateway.
7. wireline equipment according to claim 5 and wireless device intelligent networking method is characterized in that: whether the competition success among the described step B4: detecting in a period of time has miscellaneous equipment to send gateway messages if comprising; If do not detected in a period of time and then competed success when miscellaneous equipment sends gateway messages; If then judge when having detected miscellaneous equipment and send gateway information in a period of time to have conflict, equipment competition failure; If two equipment are competed then all failures of application of gateway simultaneously.
8. according to claim 1 or 5 or 6 or 7 described wireline equipments and wireless device intelligent networking method, it is characterized in that: described gateway information comprises gateway IP, gateway user name, inter-network section gateway role.
9. wireline equipment according to claim 1 and wireless device intelligent networking method, it is characterized in that: among the described step B is to send to wireless self-networking to contain the gateway messages that connects its wireless network card to Wireless/wired MANET publishing gateway message, contains the gateway messages that is connected its wired network adapter with sending to wired MANET.
10. wireline equipment according to claim 1 and wireless device intelligent networking method is characterized in that: also comprise among the described step B virtual gateway from maintenance process, the parallel timing maintenance of carrying out virtual gateway and gateway messages receive to be handled.
11. wireline equipment according to claim 10 and wireless device intelligent networking method, it is characterized in that: the timing of described virtual gateway is safeguarded and is comprised: when regularly-scheduled maintenance period arrives, judge according to the flag bit in the gateway messages whether self is virtual gateway; Be then to continue to Wireless/wired MANET publishing gateway message; Otherwise check the whether overtime inefficacy of gateway service intervals; Announcement apparatus upper layer application layer then during overtime inefficacy, gateway is unavailable; Then finish the timing maintenance process of virtual gateway when not overtime.
12. wireline equipment according to claim 10 and wireless device intelligent networking method, it is characterized in that: described gateway messages receives to handle and comprises: any one receives the Wireless/wired client of gateway messages, judges by the flag bit in the gateway messages whether oneself is gateway; Further judge whether to exist the gateway conflict when being gateway; The upper layer application layer of announcement apparatus when having the gateway conflict, there is conflict in gateway; Judge when being not gateway whether oneself will use gateway; When using gateway, then further check the whether overtime inefficacy of gateway service intervals, if overtime inefficacy, announcement apparatus upper layer application layer then, the gateway of setting is unavailable; In the above-mentioned steps, if do not have the gateway conflict or do not use gateway or the gateway service intervals not overtime, new gateway preventive maintenance time more then.
13. wireline equipment according to claim 1 and wireless device intelligent networking method, it is characterized in that: among the described step C, the IP bag of virtual gateway transmits and multicast is transmitted, and comprising: Wireless/wired Wireless/wired equipment in networking sends the Hello message that contains its role and device type to virtual gateway; Virtual gateway is analyzed Hello message, the role during for the role that uses virtual gateway and as the connection of inter-network section, the Hello message multicast of this Wireless/wired equipment is transmitted to the cable/wireless device of another network segment and the IP bag that receives in wired connection and the wireless connections is transmitted mutually.
14. the expansion application process of wireline equipment and wireless device intelligent networking method is characterized in that comprising:
A. have wireless connections and can visit the Internet gateway that Internet is connected by a plurality of, issue the gateway maintain message of self separately to network;
B. any one wireless client receives the gateway maintain message by a plurality of Internet gateway issues, and these gateway maintain message of buffer memory;
C. when wireless client inquiry Internet gateway, obtain all Internet gateway informations;
D. wireless client is selected to use one of them Internet gateway, and the default gateway of oneself is set to the Internet gateway of this selection, and sends the request of visit Internet network to this Internet gateway;
The e.Internet gateway carries out the address transition proxy surfing, visits the Internet network and carry out address transition the network information that the Internet network returns is transmitted to wireless client.
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| CNB2003101194256A CN1324853C (en) | 2003-12-10 | 2003-12-10 | Intelligent method for building up wired device and wireless devices, and method for widening applications |
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| CNB2003101194256A CN1324853C (en) | 2003-12-10 | 2003-12-10 | Intelligent method for building up wired device and wireless devices, and method for widening applications |
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| CN1627716A true CN1627716A (en) | 2005-06-15 |
| CN1324853C CN1324853C (en) | 2007-07-04 |
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