CN103139858A - Method, system and mobile terminal for realizing seamless switching between code division multiple access (CDMA) and wireless fidelity (WiFi) - Google Patents
Method, system and mobile terminal for realizing seamless switching between code division multiple access (CDMA) and wireless fidelity (WiFi) Download PDFInfo
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- CN103139858A CN103139858A CN201110393425XA CN201110393425A CN103139858A CN 103139858 A CN103139858 A CN 103139858A CN 201110393425X A CN201110393425X A CN 201110393425XA CN 201110393425 A CN201110393425 A CN 201110393425A CN 103139858 A CN103139858 A CN 103139858A
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Abstract
The invention provides a method, a system and a mobile terminal for realizing seamless switching between code division multiple access (CDMA) and wireless fidelity (WiFi). The mobile terminal is connected to the a network through a first data link, when a switching condition is met, a point-to-point protocol (PPP) protocol stack is called by a switching progress to establish a second data link, the second data link is established, the switching progress cuts off and maintains data of the PPP protocol stack till the mobile terminal is switched from the first data link to the second data link, when the mobile terminal is switched to the second data link, the switching progress sends the maintained data of the PPP protocol stack to the second data link, and the first data link is cut off. According to the method, the system and the mobile terminal for realizing seamless switching between the CDMA and the WiFi, network reselection and network re-engaging attestation are left out under the same packet data serving node (PDSN), and service connection of a user is not interrupted.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to method, system and the mobile phone terminal of a kind of CDMA of realization and WiFi seamless switching.
Background technology
Formed new product after mobile broadband (CDMA) merges with WiMAX (WiFi), allow user's mobile phone can use C+W unified certification client software dial feature, select WiFi or two kinds of heterogeneous networks access waies of CDMA to surf the Net, thereby enjoy wireless Internet services at a high speed and relevant the Internet value-added service.
Industry has only proposed the technical scheme switched between WiFi under movement-based IP (Mobile IP) framework and cdma network at present.The framework of movement-based IP is used abroad, and it is the trend of future development.
But present network formats (Simple IP) selects only to provide at the authentication access phase autoconnect function of WiFi and CDMA access way, and under service connected state, if the conversion of WiFi and CDMA access way occurs, the service connection that must interrupt the user reselects network and again initiates access authentication, thereby can't guarantee the continuity of service connection.
Summary of the invention
In view of more than, the present invention proposes method, system and the mobile phone terminal of a kind of CDMA of realization and WiFi seamless switching.
A kind of method that realizes CDMA and WiFi seamless switching that the present invention proposes, at mobile phone terminal, network is connected and switch to second network from first network, described mobile phone terminal comprises client and described client operation operating system thereon, described client comprises handover process, described operating system comprises first network unit, second network unit and ppp protocol stack, and the method comprises the following steps:
The first data link of built vertical first network unit and first network, mobile phone terminal is by the first data link online;
Handover process judges whether to satisfy switching condition, if satisfy, handover process is called the ppp protocol stack;
Called the driver of second network unit by the ppp protocol stack, set up the second data link of second network unit and second network;
Set up the second Data-Link, handover process intercepts and keeps the data of ppp protocol stack, until switch to the second data link from the first data link;
When switching to the second data link, the data of the ppp protocol stack that handover process will keep mail to the second data link, and cut off the first data link.
Further, the described method that realizes CDMA and WiFi seamless switching, wherein, first network is cdma network, and the first network unit is the CDMA unit, and second network is the WiFi network, and the second network unit is the WiFi unit.
Further, the described method that realizes CDMA and WiFi seamless switching, wherein, first network is the WiFi network, and the first network unit is the WiFi unit, and second network is cdma network, and the second network unit is the CDMA unit.
Further, the described method that realizes CDMA and WiFi seamless switching, wherein, handover process judges whether to satisfy switching condition, comprises the following steps: handover process judges whether network strength drops to switching threshold, if, initiate to switch, call the ppp protocol stack, otherwise do not initiate to switch.
A kind of mobile phone terminal of realizing CDMA and WiFi seamless switching that the present invention proposes, wherein:
Client runs on operating system, comprising:
Handover process when by the first data link online, judges whether to satisfy switching condition, if satisfy, calls the ppp protocol stack, indicates it to set up the second data link; When setting up the second data link, intercept and keep the data of ppp protocol stack, until switch to the second data link from the first data link; When switching to the second data link, the data of the ppp protocol stack that kept are mail to the second data link, and cut off the first data link;
Operating system comprises:
The first data link with first network is set up in the first network unit;
The second data link with second network is set up in the second network unit;
The ppp protocol stack is disposed at the indication according to handover process, calls the driver of second network unit, to drive the second data link of second network unit foundation and second network.
Further, the described mobile phone terminal of realizing CDMA and WiFi seamless switching, wherein, first network is cdma network, and the first network unit is the CDMA unit, and second network is the WiFi network, and the second network unit is the WiFi unit.
Further, the described mobile phone terminal of realizing CDMA and WiFi seamless switching, wherein, first network is the WiFi network, and the first network unit is the WiFi unit, and second network is cdma network, and the second network unit is the CDMA unit.
Further, the 7 described mobile phone terminals of realizing CDMA and WiFi seamless switching, wherein: described handover process judges whether network strength drops to switching threshold, if so, initiates to switch, and calls the ppp protocol stack, otherwise does not initiate to switch.
A kind of system that realizes CDMA and WiFi seamless switching that the present invention proposes comprises the as above mobile phone terminal of arbitrary described CDMA of realization and WiFi seamless switching.
The present invention is based on existing simple IP (Simple IP) and C+W unified certification framework, proposed a kind ofly to guarantee that PPP is connected unbroken method that renews when realizing between CDMA and WiFi the data service seamless switching on mobile phone terminal.Call the ppp protocol stack that is positioned at mobile phone terminal by the handover process of mobile phone terminal, intercept and capture its packet and forward, thereby realized not interrupting of PPP connection.
The present invention realizes not carrying out network reselection and access authentication again under same PDSN, do not interrupt user's service connection, and when namely switching between CDMA and WiFi rete mirabile, maintenance IP address is constant, thereby realizes the really switching of meaning between CDMA and two networks of WiFi.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of a part of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 illustrates the uniform authentication system architecture figure that the present invention realizes CDMA and WiFi seamless switching, and this system comprises mobile phone C+W unified certification terminal of the present invention.
Fig. 2 is the schematic diagram that mobile phone terminal of the present invention is shown, and this mobile phone terminal comprises client and operating system.
Fig. 3 illustrates the method that the present invention realizes CDMA and WiFi seamless switching.
Fig. 4 illustrates the present invention to realize switching from CDMA to the WiFi network the unbroken flow chart of PPP connection.
Fig. 5 illustrates the present invention to realize switching the unbroken flow chart of PPP connection from WiFi to the cdma network.
Embodiment
The present invention relates to the user uses in the mobile service process by cdma network or WiFi network, the current network Quality Down, when the business that affects was used, system can initiate to switch automatically, switch to rete mirabile from current network, namely switch to WiFi or switch to CDMA from WiFi from CDMA.The present invention no longer redistributes the IP address between CDMA and WiFi rete mirabile, thereby has realized not interrupting of PPP connection, guarantees that in handoff procedure, business is not interrupted.
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
Fig. 1 illustrates the system architecture diagram that the present invention realizes CDMA and WiFi seamless switching, this system comprises mobile phone C+W unified certification terminal of the present invention, in figure, PDSN, AAA, AN/AAA, HLR/AuC, DO RNC, BSC/PCF and BTS are cdma network standard network element, AP, AC/BAS are WiFi network standard network element, WAG is the IAD of realizing unified certification, said network element is the existing network network element, the present invention is based on this group-network construction, and the existing network network element is not done any change.
Fig. 2 illustrates mobile phone C+W unified certification terminal of the present invention, i.e. the schematic diagram of mobile phone terminal, and this mobile phone terminal comprises client and operating system, client is the application that runs on operating system.Be provided with handover process and client application in client, be provided with first network unit, second network unit and ppp protocol stack in operating system.
The first data link with first network is set up in the first network unit.
The second data link with second network is set up in the second network unit.
The ppp protocol stack is disposed at the indication according to handover process, calls the driver of second network unit, to drive the second data link of second network unit foundation and second network.
Handover process when by the first data link online, judges whether to satisfy switching condition, if satisfy, calls the ppp protocol stack, indicates it to set up the second data link; When setting up the second data link, intercept and keep the data of ppp protocol stack, until switch to the second data link from the first data link; When switching to the second data link, the data of the ppp protocol stack that kept are mail to the second data link, and cut off the first data link.
In the present invention, when handover process is switched at the generation network, the network connection before switching is first maintained, the network after first foundation is switched connects, make like this network equipment not carry out network reselection and access authentication again, thereby realize the switching of real meaning between CDMA and two networks of WiFi.
In one embodiment of the invention, realized from CDMA to the WiFi network switching PPP and connected unbroken process, namely first network is cdma network, and the first network unit is the CDMA unit, and second network is the WiFi network, and the second network unit is the WiFi unit.
In another embodiment of the present invention, realized from WiFi to the cdma network switching PPP and connected unbroken process, namely first network is the WiFi network, and the first network unit is the WiFi unit, and second network is cdma network, and the second network unit is the CDMA unit.
Fig. 3 illustrates the method that the present invention realizes CDMA and WiFi seamless switching, at mobile phone terminal, network is connected and switch to second network from first network, described mobile phone terminal comprises client and described client operation operating system thereon, described client comprises handover process, described operating system comprises first network unit, second network unit and ppp protocol stack, and the method comprises the following steps:
The first data link of S301, built vertical first network unit and first network, mobile phone terminal is by the first data link online.
S302, handover process judge whether to satisfy switching condition, if satisfy, and execution in step S303, otherwise, continue to carry out S302.
S303, handover process are called the ppp protocol stack, are called the driver of second network unit by the ppp protocol stack, set up the second data link of second network unit and second network.
S304, set up the second Data-Link, handover process intercepts and keeps the data of ppp protocol stack, until switch to the second data link from the first data link.
S305, when switching to the second data link, the data of the ppp protocol stack that handover process will keep mail to the second data link, and cut off the first data link.
Wherein, first network is cdma network, and the first network unit is the CDMA unit, and second network is the WiFi network, and the second network unit is the WiFi unit.Perhaps first network is the WiFi network, and the first network unit is the WiFi unit, and second network is cdma network, and the second network unit is the CDMA unit.
Below in conjunction with the drawings and specific embodiments, handoff procedure of the present invention is elaborated.
Fig. 4 illustrates the present invention to switch the unbroken flow chart of PPP connection from CDMA to the WiFi network.
S401, initial condition, client are used the cdma network online.
S402, handover process judge whether to satisfy switching condition, if satisfy, execution in step S403 prepares to switch to the WiFi network, if do not satisfy, does not initiate to switch, and continues execution in step S402.Switching condition can refer to network strength, when network strength drops to switching threshold, can initiate to switch, and switching threshold can configure.
S403, handover process calling mobile phone ppp protocol stack, the ppp protocol stack of mobile phone terminal directly calls the driver (operating system carries assembly) of WIFI module, sets up WiFi module and WiFi network data link.
The data of the handover process intercepting ppp protocol stack of S404, mobile phone terminal, handover process maintains the data of intercepting, after link switching is completed by the time, directly it is mail to the WiFi module.
S405, WiFi module send data to the WiFi network.
S406, after the WIFI link establishment connects, cut off the communication of former cdma network by handover process, namely the CDMA module is cut off and the communicating by letter of cdma network, finishing switching.
In the present invention, when the generation network switched, handover process first maintained the network connection before switching, and the network of first setting up after switching connects, make like this network equipment not carry out network reselection and access authentication again, thereby realize the switching of real meaning between CDMA and two networks of WiFi.
Fig. 5 illustrates the present invention to realize switching the unbroken flow chart of PPP connection from WiFi to the cdma network.
S501, initial condition, client are used the WiFi online.
S502, handover process judge whether to satisfy switching condition, if satisfy, execution in step S503 prepares to switch to cdma network.If do not satisfy, do not initiate to switch, continue execution in step S502.Switching condition can refer to network strength, when network strength drops to switching threshold, can initiate to switch, and switching threshold can configure.
S503, handover process calling mobile phone ppp protocol stack, the ppp protocol stack of mobile phone terminal directly calls the driver (operating system carries assembly) of CDMA module, and CDMA module and cdma network are set up data link.
The data of the handover process intercepting ppp protocol stack of S504, mobile phone terminal, handover process maintains the data of intercepting, after link switching is completed by the time, it is mail to the CDMA module.
S505, CDMA module send data to cdma network.
S506, after the CDMA link establishment connects, cut off the communication of former WiFi network by handover process, namely the WiFi module is cut off and WiFi network service, finishing switching.
As the conclusion to describing in detail, should notice that those skilled in the art will be apparent to make many variations and modification to preferred embodiment, and not break away from fact principle of the present invention.Within this variation and modification are included in the described scope of the present invention of appended claims.
Claims (9)
1. method that realizes CDMA and WiFi seamless switching, at mobile phone terminal, network is connected and switch to second network from first network, described mobile phone terminal comprises client and described client operation operating system thereon, described client comprises handover process, described operating system comprises first network unit, second network unit and ppp protocol stack, and the method comprises the following steps:
The first data link of built vertical first network unit and first network, mobile phone terminal is by the first data link online;
Handover process judges whether to satisfy switching condition, if satisfy, handover process is called the ppp protocol stack;
Called the driver of second network unit by the ppp protocol stack, set up the second data link of second network unit and second network;
Set up the second Data-Link, handover process intercepts and keeps the data of ppp protocol stack, until switch to the second data link from the first data link;
When switching to the second data link, the data of the ppp protocol stack that handover process will keep mail to the second data link, and cut off the first data link.
2. realize according to claim 1 the method for CDMA and WiFi seamless switching, wherein, first network is cdma network, and the first network unit is the CDMA unit, and second network is the WiFi network, and the second network unit is the WiFi unit.
3. realize according to claim 1 the method for CDMA and WiFi seamless switching, wherein, first network is the WiFi network, and the first network unit is the WiFi unit, and second network is cdma network, and the second network unit is the CDMA unit.
4. according to claim 1 and 2 or 3 described methods that realize CDMA and WiFi seamless switching, wherein, handover process judges whether to satisfy switching condition, comprises the following steps:
Handover process judges whether network strength drops to switching threshold, if so, initiates to switch, and calls the ppp protocol stack, otherwise does not initiate to switch.
5. mobile phone terminal of realizing CDMA and WiFi seamless switching, wherein:
Client runs on operating system, comprising:
Handover process when by the first data link online, judges whether to satisfy switching condition, if satisfy, calls the ppp protocol stack, indicates it to set up the second data link; When setting up the second data link, intercept and keep the data of ppp protocol stack, until switch to the second data link from the first data link; When switching to the second data link, the data of the ppp protocol stack that kept are mail to the second data link, and cut off the first data link;
Operating system comprises:
The first data link with first network is set up in the first network unit;
The second data link with second network is set up in the second network unit;
The ppp protocol stack is disposed at the indication according to handover process, calls the driver of second network unit, to drive the second data link of second network unit foundation and second network.
6. realize according to claim 5 the mobile phone terminal of CDMA and WiFi seamless switching, wherein, first network is cdma network, and the first network unit is the CDMA unit, and second network is the WiFi network, and the second network unit is the WiFi unit.
7. realize according to claim 5 the mobile phone terminal of CDMA and WiFi seamless switching, wherein, first network is the WiFi network, and the first network unit is the WiFi unit, and second network is cdma network, and the second network unit is the CDMA unit.
8. according to claim 5 or the 6 or 7 described mobile phone terminals of realizing CDMA and WiFi seamless switching, wherein:
Described handover process judges whether network strength drops to switching threshold, if so, initiates to switch, and calls the ppp protocol stack, otherwise does not initiate to switch.
9. system that realizes CDMA and WiFi seamless switching comprises the mobile phone terminal of the arbitrary described CDMA of realization of claim 5 to 8 and WiFi seamless switching.
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| WO2016180217A1 (en) * | 2015-07-07 | 2016-11-17 | 中兴通讯股份有限公司 | Method and apparatus for realizing network switching |
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| CN108124293A (en) * | 2017-12-15 | 2018-06-05 | 中国人民解放军32039部队 | Voice service switching method and device in spatial isomerism integrated network |
| JP2020511819A (en) * | 2017-02-15 | 2020-04-16 | オッポ広東移動通信有限公司Ｇｕａｎｇｄｏｎｇ Ｏｐｐｏ Ｍｏｂｉｌｅ Ｔｅｌｅｃｏｍｍｕｎｉｃａｔｉｏｎｓ Ｃｏｒｐ．， Ｌｔｄ． | Network connection method and device |
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| CN104090739A (en) * | 2014-03-14 | 2014-10-08 | 联想(北京)有限公司 | Electronic equipment and control method thereof |
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