CN102655660B - Method and device for automatic switching of SIP terminal among plurality of APs when in accessing WIFI - Google Patents
Method and device for automatic switching of SIP terminal among plurality of APs when in accessing WIFI Download PDFInfo
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Abstract
The invention provides a method and a device for automatic switching of an SIP (Session Initiation Protocol) terminal among a plurality of APs when in accessing WIFI. The SIP terminal is linked with the AP1 through wireless signals, and the AP1 allocates an IP address for the SIP terminal to be a linking address; and when in communication, the SIP terminal is communicated with other terminals by control of a core network through the IP address. In the communication process, the SIP terminal firstly registers on the AP2 and obtains a new IP address if the AP needs to be switched; and then the switching request and the new IP address are sent to a media server through sending a signaling request, the media server informs the new IP address of the communicating terminal, and the SIP terminal is changed into AP2 connection from the original AP1 connection. The purpose of switching APs can be achieved with the mode.
Description
Technical field
The present invention relates to SIP mobile terminal access technology field, particularly relate to the method and system that sip terminal access WIFI automatically switches between many AP.
Background technology
Along with the development of new generation network and the evolution of terminal access technology, wireless access terminal at present based on SIP gets more and more, function from strength to strength, except common function of voice communication, also add all kinds of services based on the Internet such as video calling, network browsing, video playback, is therefore the main application supporting body of net generation network terminal based on the wireless access terminal of SIP.
Current part is be linked into wireless network by the mode of WIFI based on the wireless access of SIP, controls interactive function by Session Initiation Protocol.When the wireless terminal access based on WIFI uses time, if user holds fast mobile terminal between multiple AP, so just may cause the interruption of communication service, make user have to re-enter username and password, re-register connection, cause Consumer's Experience to decline.
Summary of the invention
The technical problem to be solved in the present invention is based on the SIP wireless terminal of IMS network in moving process, the strong and weak and problem of access of automatically switching of the signal with different AP point.
In order to solve the problem, the present invention proposes the method that sip terminal access WIFI automatically switches between many AP, comprising:
Widget engine is installed;
Widget program is installed;
Set the username and password of at least one access point (AP), signal switching threshold value and automatically register threshold value;
Sip terminal is linked by wireless signal and an AP, and an AP is sip terminal distributing IP address, and as chained address, sip terminal, by this IP address, controls to communicate with other-end by core net, sets up Media Stream;
In communication process, sip terminal moves between an AP and the 2nd AP, and Widget Programmable detection arrives to the 2nd AP signal and automatically registers threshold value;
Starting from being dynamically connected registration, being registered to the 2nd AP according to the username and password of the 2nd AP, obtaining new IP address;
When the signal of an AP is lower than setting signal switching threshold, Widget program sends sip message to media server, carries the IP address of the 2nd AP in a sip message;
The IP address of the 2nd AP, just at the Media Stream of UNICOM, is informed the terminal communicated, is directly switch to the 2nd AP by media services amendment;
Sip terminal changes the 2nd AP into by an AP connection and connects, and realizes automatically switching.
The present invention also proposes the system that sip terminal access WIFI automatically switches between many AP, comprising:
Media server, for according to an AP being the IP address that sip terminal distributes, for sip terminal sets up the Media Stream with communication terminal, receive sip terminal send carry the handover request of the IP address of the 2nd AP time, amendment Media Stream, the terminal communicated is informed in the IP address of the 2nd AP, is directly switch to the 2nd AP;
Sip terminal, for providing the exploitation control interface of Widget program, installing Widget engine, installing Widget program, when the sip terminal accessing an AP moves between an AP and the 2nd AP, described Widget Programmable detection arrives the automatic registration threshold value of setting to the 2nd AP signal value, 2nd AP is registered and obtains the IP address of the 2nd AP, when the signal of an AP is lower than setting signal switching threshold, media server is informed in the IP address of the 2nd AP by Widget program, is connected change the 2nd AP connection into by an AP.
The present invention also proposes the sip terminal that access WIFI automatically switches between many AP, comprising:
Information collection module, for setting username and password, the signal switching threshold value of at least one access point (AP) and automatically registering threshold value;
Acquisition of signal module, is placed in sip terminal, for detecting AP signal value;
Communication module, is linked by wireless signal and an AP, and the IP address distributed by an AP is communicated with other-end, sets up Media Stream;
Control module, be coupled in login module, information collection module, communication module and acquisition of signal module, during for moving at sip terminal between an AP and the 2nd AP, the 2nd AP signal value is obtained from acquisition of signal module, when the 2nd AP signal value arrives the automatic registration threshold value of setting, notice Registering modules is registered, and when the signal of an AP is lower than the signal switching threshold value set, notice handover module switches;
Registering modules, for starting to be dynamically connected registration, according to the request to network initiation registration the 2nd AP of the username and password of the 2nd AP of setting, and from the IP address of Network Capture the 2nd AP;
Handover module, for sending handover request to media server, carries the IP address of the 2nd AP in handover request, is connected change the 2nd AP connection into by an AP.
The present invention to be automatically switched access way flexibly based on the one of Widget technology, not only there is automatic discriminator signal power and the ability automatically accessed by multiple wireless interface entrance, and packed by widget mode, make it the SIP multimedia terminal being applicable to several operation systems.The invention provides the preset function of username and password, when user move to different AP need switch time, software can re-register according to the username and password set, and obtain new IP, in the address of the UPDATE message alteration media intercommunication by Session Initiation Protocol, realize automatic seamless switching with this.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the system that sip terminal of the present invention access WIFI automatically switches between many AP.
Fig. 2 is the method flow diagram that sip terminal of the present invention access WIFI automatically switches between many AP.
Fig. 3 is the related function module schematic diagram of Widget program of the present invention.
Embodiment
The mode of current WIFI access is widely used in the places such as family, office building, dining room, airport, the coverage of WIFI compared with little but to cover focus many, for the demand of seamless switching mobile accessing terminal than stronger.Major part sip terminal can be accessed by WIFI mode.The present invention is mainly for the problem by realizing automatic switchover during sip terminal access WIFI.
In the present invention, sip terminal is linked by wireless signal and AP1, and AP1 is sip terminal distributing IP address, as chained address; During communication, sip terminal, by this IP address, controls to communicate with other-end by core net.In communication process, if need to switch AP, sip terminal first in AP2 registration, and obtains new IP address.Then handover request and new IP address are passed through to send scheduling request to media server, the terminal communicated is informed in new IP address by media server, and sip terminal changes AP2 into by original AP1 connection and connects.Reach the object switching AP in this way.
As shown in Figure 1, be the system that sip terminal access WIFI of the present invention automatically switches between many AP, comprise: sip terminal, an AP (AP, Access Point, WAP (wireless access point)), the 2nd AP, media server.
Media server, refers to the medium control device inside core network, the foundation of media links during major control terminal communication.Linked by IP network carrying between media server with terminal.
Sip terminal, the control interface providing network to connect, the Widget engine installing the operating system adapting to most of SIP multimedia terminal, installation Widget program.Wherein, by control interface, relevant control exploitation is carried out to Widget program.The present invention realizes automatically accessing switching under Widget technical background, utilizes Widget technology to be the advantage of cross operating system, so same software, can be used on different operating system terminals.
By the idiographic flow shown in Fig. 2 of the present invention, to method flow, the handover operation especially performed by Widget program is described.Fig. 2 is the method flow that sip terminal of the present invention access WIFI automatically switches between many AP, comprises the following steps:
In step 201, Widget engine is installed.
In step 202, Widget program is installed, i.e. automatic switching program.
In step 203, set the username and password of many AP, signal switching threshold value (P1) and automatically register threshold value (P2).Different access point AP, username and password is different.The username and password of many AP or at least one AP mentioned here, can refer to the username and password of the username and password of an AP (AP1), the 2nd AP (AP2) respectively.
In step 204, sip terminal is linked by wireless signal and AP1, and AP1 is sip terminal distributing IP address, as chained address; During communication, sip terminal, by this IP address, controls to communicate with other-end by core net, sets up Media Stream.
In step 205, in communication process, sip terminal moves between AP1 and AP2, and Programmable detection arrives to AP2 signal and automatically registers threshold value (P2).
In step 206, starting from being dynamically connected registering functional, namely registering at AP2 according to the username and password of the AP2 of setting, obtaining new IP address.
In step 207, when the signal of AP1 is lower than setting signal switching threshold (P1), program sends sip message to media server, preferably, with new IP address in UPDATE message.
In step 208, media server is preferably by UPDATE message, and new IP address, just at the Media Stream of UNICOM, is informed the terminal communicated, is directly switch to new IP by amendment.Sip terminal changes AP2 into by original AP1 connection and connects.
In step 209, after completing switching, program can also nullify the user of AP1 automatically according to the username and password of AP1.
Automatically switch under so just keeping the continual situation of Media Stream, reach the object switching AP.
Below in conjunction with Fig. 3, the related function module of Widget program is described, comprises:
Login module, user opens Widget program, must have an authority login feature, be logged in, ensure safety by username and password.Here username and password refers to login username and password, with the access user name of access point and password different, namely the former is for logging in Widget program, and the latter is for accessing AP.
Information collection module, for setting username and password, the signal switching threshold value of at least one access point (AP) and automatically registering threshold value, and provides the default value of threshold value.Different access point AP, username and password is different.The username and password of at least one access point mentioned here can refer to the username and password of an AP, the username and password of the 2nd AP.
Acquisition of signal module, is placed in sip terminal, for detecting AP signal strength values.
Communication module, is linked by wireless signal and an AP, and the IP address distributed by an AP is communicated with other-end, sets up Media Stream.
Control module, is coupled in login module, information collection module, communication module and acquisition of signal module, is connected with the information of acquisition of signal module for realizing, the signal value of the different AP of Real-time Obtaining.Be coupled in information collection module, the signal value of the AP of acquisition and the threshold value of setting are compared, judge whether to initiate accreditation process, changeover program or deregistration procedure.According to judged result, when initiating accreditation process, providing relevant username and password to Registering modules, when initiating changeover program, providing new IP address to handover module.When initiating deregistration procedure, relevant username and password can also be provided to cancellation module.
Be switched to the embodiment of the 2nd AP from an AP as the present invention, when the sip terminal accessing an AP moves between an AP and the 2nd AP, the 2nd AP signal value is obtained from acquisition of signal module, detect the signal strength signal intensity of the 2nd AP, wherein, the signal strength signal intensity of the 2nd AP refers to the signal strength values of wireless terminal reception to the 2nd AP, the namely received power of terminal, unit: dBm.The change of the Distance geometry environment between wireless terminal and AP, the change of the signal strength values that wireless terminal reception all can be caused to arrive, general distance is far away, and signal strength values is more weak.Detect that the signal strength signal intensity of the 2nd AP arrives and automatically register threshold value, notice Registering modules is registered.When the signal strength signal intensity of an AP is more than or equal to signal switching threshold value, then keep present situation, when the signal strength signal intensity of an AP is lower than signal switching threshold value, the IP address of the 2nd AP is obtained from Registering modules, handover request is sent to handover module, the IP address of the 2nd AP is carried, to be switched to the 2nd AP in handover request.
Registering modules, for starting to be dynamically connected registering functional, initiates the request of registration the 2nd AP to network according to the username and password of the 2nd AP of setting, and from the IP address of Network Capture the 2nd AP.
The logon mode of wireless access provides by accessing side, and different access points may be different with parameter that access way needs, but current most WIFI access way all can the mode of choice for use " username and password " log in.Arranging of native system is very flexible, if there is special login parameters requirement, also can increase in programming.
Handover module, for sending handover request to media server, carries the IP address of the 2nd AP in handover request, connects be switched to the 2nd AP connection from an AP.In the present invention, the handover request initiated sends sip message to IMS network, preferably, by Update message modification media flow IP address.
Again as shown in Figure 3, system of the present invention can also comprise:
Cancellation module, for nullifying current login user.Such as, current login user is linked into an AP, and after being switched to the 2nd AP, cancellation module nullifies an AP according to the username and password of an AP.
The present invention is applied to IMS and accesses terminal, and based on IMS network, uses sip message amendment media links IP.Utilize versatility and the flexibility of Widget technology, the more eurypalynous terminal equipment of adaptation that can be faster and better, realizes the adaptation of multiple terminals type cross operating system, has more flexibility and practicality.Self-defined username and password, can realize seamless, automatic switchover according to signal power between the many AP of regulation.
As the conclusion to detailed description, should notice that those skilled in the art will be apparent from can make many changes and amendment to preferred embodiment, and does not depart from principle of the present invention in fact.This change and amendment are included within the scope of the present invention described in appended claims.
Claims (10)
- The method that 1.SIP terminal access WIFI automatically switches between many AP, comprising:Sip terminal is installed Widget engine, is installed Widget program;Set the username and password of at least one access point (AP), signal switching threshold value and automatically register threshold value;Sip terminal is linked by wireless signal and an AP, and an AP is sip terminal distributing IP address, and as chained address, sip terminal, by this IP address, controls to communicate with other-end by core net, sets up Media Stream;In communication process, sip terminal moves between an AP and the 2nd AP, and Widget Programmable detection arrives to the 2nd AP signal and automatically registers threshold value;Starting from being dynamically connected registration, being registered to the 2nd AP according to the username and password of the 2nd AP, obtaining new IP address;When the signal of an AP is lower than setting signal switching threshold, Widget program sends sip message to media server, carries the IP address of the 2nd AP in a sip message;The IP address of the 2nd AP, just at the Media Stream of UNICOM, is informed the terminal communicated, is directly switch to the 2nd AP by media services amendment;Sip terminal changes the 2nd AP into by an AP connection and connects, and realizes automatically switching.
- 2. the method that automatically switches between many AP of sip terminal access WIFI according to claim 1, also comprises:After being switched to the 2nd AP, nullify the user of an AP according to the username and password of an AP.
- 3. the method that sip terminal access WIFI automatically switches between many AP according to claim 1 or 2, carry being operating as of the IP address of the 2nd AP in a sip message:The IP address of the 2nd AP is carried in the UPDATE message of sip message.
- The system that 4.SIP terminal access WIFI automatically switches between many AP, comprising:Media server, for according to an AP being the IP address that sip terminal distributes, for sip terminal sets up the Media Stream with communication terminal, receive sip terminal send carry the handover request of the IP address of the 2nd AP time, amendment Media Stream, the terminal communicated is informed in the IP address of the 2nd AP, is directly switch to the 2nd AP;Sip terminal, for providing the exploitation control interface of Widget program, installing Widget engine, installing Widget program module, when the sip terminal accessing an AP moves between an AP and the 2nd AP, described Widget Programmable detection arrives the automatic registration threshold value of setting to the 2nd AP signal value, 2nd AP is registered and obtains the IP address of the 2nd AP, when the signal of an AP is lower than setting signal switching threshold, media server is informed in the IP address of the 2nd AP by Widget program, is connected change the 2nd AP connection into by an AP.
- 5. the system that automatically switches between many AP of sip terminal access WIFI according to claim 4, sip terminal comprises:Information collection module, for setting username and password, the signal switching threshold value of at least one access point (AP) and automatically registering threshold value;Acquisition of signal module, is placed in sip terminal, for detecting AP signal value;Communication module, is linked by wireless signal and an AP, and the IP address distributed by an AP is communicated with other-end, sets up Media Stream;Control module, be coupled in login module, information collection module, communication module and acquisition of signal module, during for moving at sip terminal between an AP and the 2nd AP, the 2nd AP signal value is obtained from acquisition of signal module, when the 2nd AP signal value arrives the automatic registration threshold value of setting, notice Registering modules is registered, and when the signal of an AP is lower than the signal switching threshold value set, notice handover module switches;Registering modules, for starting to be dynamically connected registration, according to the request to network initiation registration the 2nd AP of the username and password of the 2nd AP of setting, and from the IP address of Network Capture the 2nd AP;Handover module, for sending handover request to media server, carries the IP address of the 2nd AP in handover request, is connected change the 2nd AP connection into by an AP.
- 6. the system that automatically switches between many AP of sip terminal access WIFI according to claim 5, sip terminal also comprises:Cancellation module, after being switched to the 2nd AP, nullifies the user of an AP according to the username and password of an AP.
- 7. according to the system that described sip terminal access WIFI arbitrary in claim 4 to 6 automatically switches between many AP, wherein:Described handover module sends the handover request of sip message to media server, carries the IP address of the 2nd AP in the UPDATE message of sip message.
- 8. access the sip terminal that WIFI automatically switches between many AP, comprising:Information collection module, for setting username and password, the signal switching threshold value of at least one access point (AP) and automatically registering threshold value;Acquisition of signal module, is placed in sip terminal, for detecting AP signal value;Communication module, is linked by wireless signal and an AP, and the IP address distributed by an AP is communicated with other-end, sets up Media Stream;Control module, be coupled in login module, information collection module, communication module and acquisition of signal module, during for moving at sip terminal between an AP and the 2nd AP, the 2nd AP signal value is obtained from acquisition of signal module, when the 2nd AP signal value arrives the automatic registration threshold value of setting, notice Registering modules is registered, and when the signal of an AP is lower than the signal switching threshold value set, notice handover module switches;Registering modules, for starting to be dynamically connected registration, according to the request to network initiation registration the 2nd AP of the username and password of the 2nd AP of setting, and from the IP address of Network Capture the 2nd AP;Handover module, for sending handover request to media server, carries the IP address of the 2nd AP in handover request, is connected change the 2nd AP connection into by an AP.
- 9. access the sip terminal that WIFI automatically switches between many AP according to claim 8, also comprise:Cancellation module, after being switched to the 2nd AP, nullifies the user of an AP according to the username and password of an AP.
- 10. access the sip terminal that WIFI automatically switches between many AP according to claim 8 or claim 9, wherein:Described handover module sends the handover request of sip message to media server, carries the IP address of the 2nd AP in the UPDATE message of sip message.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103067403B (en) * | 2013-01-10 | 2016-07-06 | 中兴通讯股份有限公司 | A kind of business switch method, system and server |
| CN103152781B (en) * | 2013-03-26 | 2016-02-03 | 天地（常州）自动化股份有限公司 | Mining SIP mobile terminal automatic roaming changing method between mining wireless base station |
| CN104618870A (en) * | 2015-01-26 | 2015-05-13 | 蒋欣飏 | Control method and control device, system for wifi self-motion |
| CN104767743A (en) * | 2015-03-25 | 2015-07-08 | 广东欧珀移动通信有限公司 | Automatic wireless local area network login information switching method and device |
| CN105263154A (en) * | 2015-09-17 | 2016-01-20 | 广东欧珀移动通信有限公司 | Method and system of Wi-Fi equipment for switching wireless access point |
| CN106488518B (en) * | 2016-11-16 | 2020-01-21 | 广东新岸线计算机系统芯片有限公司 | Method for realizing user data continuous transmission under multi-cell switching |
| CN114710978A (en) * | 2020-11-05 | 2022-07-05 | 深圳市大疆创新科技有限公司 | Device connection method, device, hardware device and computer readable storage medium |
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| CN101711010A (en) * | 2009-12-01 | 2010-05-19 | 西安大唐电信有限公司 | Underground wireless communication method and system |
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| WO2003017582A1 (en) * | 2001-08-15 | 2003-02-27 | Meshnetworks, Inc. | A system and method for providing an addressing and proxy scheme for facilitating mobility of wireless nodes between wired access points on a core network of a communications network |
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