CN105828397A

CN105828397A - Wireless access point switching method and mobile terminal

Info

Publication number: CN105828397A
Application number: CN201610184776.2A
Authority: CN
Inventors: 刘春娇; 吴晓勇; 卿智勇
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2016-03-28
Filing date: 2016-03-28
Publication date: 2016-08-03
Anticipated expiration: 2036-03-28
Also published as: CN105828397B

Abstract

The embodiment of the invention provides a wireless access point switching method and a mobile terminal. The method comprises: when the mobile terminal is connected with a first wireless access point, determining whether a presetting switching condition is satisfied or not; when the presetting switching condition is satisfied, obtaining the performance indexes of one or more than one wireless access points having been connected with the mobile terminal; selecting a second wireless access point from one or more than one wireless access points according to the performance indexes of one or more than one wireless access points; determining whether the first switching condition is satisfied or not according to the performance index and the first wireless access point and the performance index of the second wireless access point; and when the first switching condition is satisfied, performing switching processing of wireless connection of the mobile terminal. According to the embodiment of the invention, the wireless access point switching method is able to allow the mobile terminal to rapidly switch to an optimal wireless access point in the environment of multiple wireless access points so as to improve the user internet experience.

Description

A kind of method switching WAP and mobile terminal

Technical field

The present invention relates to intelligent terminal's technical field, and more particularly, to a kind of method switching WAP and mobile terminal.

Background technology

At Wireless Fidelity (WiFi, WIrelessFIdelity) in communication, mobile terminal (STA) passes through WAP (AP, ACCESSPOINT) access of the Internet is realized, due to the limited coverage area of an AP, the most only 50～300 meters, the support to terminal mobility is extremely limited, it is thus desirable to perform to be switched fast between different AP, switch, to reduce, the network break period caused between AP.

Result of study shows, between AP, switching delay more than 90% derives from sweep phase and DHCP (DHCP, DynamicHostConfigurationProtocol) agreement (IP of interconnection between networking, InternetProtocol) two stages are obtained, reduce the delay of sweep phase and can reduce switching delay between AP significantly, and then reduce and switch, between AP, the network break period brought.

What traditional WiFi network AP switching was followed is the thought of " the first company of having no progeny ", when the most current quality of connection becomes unacceptable, STA just can then try to connect other AP, and STA proper communication time can't prepare for possible switching, so it is known nothing for the AP resource of surrounding, so switching when it be necessary for first searching for around available AP, this scanning process is the hugest.Ap is IP acquisition to be carried out after completing connecting moves, uses DHCP and dynamically obtain in the conventional arrangement of user, and this point often depends on network environment and provides the administrative mechanism of DHCP service.

In sum, mobile terminal in the environment of many wireless apss, switching WAP time long, user surf the Net experience poor.

Summary of the invention

Embodiments providing a kind of method switching WAP and mobile terminal, solve mobile terminal in the environment of many wireless apss, the time of switching WAP is long, and user surfs the Net the problem experiencing difference.

On the one hand, The embodiment provides a kind of method switching WAP, the method includes:

When mobile terminal and the first WAP connect, it may be judged whether meet and preset switching condition；

When meeting default switching condition, obtain the performance indications of one or more WAPs that mobile terminal had connected；

According to the performance indications of one or more WAPs, from one or more WAPs, select second WAP；

Performance indications according to the first WAP and the performance indications of the second WAP, it may be judged whether meet the first switching condition；

When meeting the first switching condition, move the hand-off process of the wireless connections of terminal.

On the other hand, embodiments of the invention additionally provide a kind of mobile terminal, and this mobile terminal includes:

First judge module, is used for when mobile terminal and the first WAP connect, it may be judged whether meet and preset switching condition, and when meeting default switching condition, trigger acquisition module；

Acquisition module, for the triggering according to the first judge module, obtains the performance indications of one or more WAPs that mobile terminal had connected；

Select module, for the performance indications according to one or more WAPs, from one or more WAPs, select second WAP；

Second judge module, for the performance indications according to the first WAP and the performance indications of the second WAP, it may be judged whether meet the first switching condition, and when meeting the first switching condition, trigger handover module；

Handover module, for the triggering according to the second judge module, moves the hand-off process of the wireless connections of terminal.

The such scheme of the present invention at least includes following beneficial effect:

nullIn an embodiment of the present invention，By when mobile terminal and the first WAP connect，Judge whether to meet and preset switching condition，And when meeting default switching condition，Performance indications according to one or more WAPs that mobile terminal had connected，Second WAP is selected from one or more WAPs，And according to the performance indications of the first WAP and the performance indications of the second WAP，Judge whether to meet the first switching condition，And when meeting the first switching condition，Move the hand-off process of the wireless connections of terminal，Solve mobile terminal in the environment of many wireless apss，The time of switching WAP is long，User surfs the Net and experiences poor problem，Reach to make mobile terminal in the environment of many WAPs，It is quickly switched into the WAP of optimum，Promote the effect that the online of user is experienced.

Accompanying drawing explanation

Fig. 1 is the flow chart of the method switching WAP in first embodiment of the invention；

Fig. 2 is to judge whether in first embodiment of the invention to meet the flow chart presetting switching condition；

Fig. 3 is the particular flow sheet of step S102 in Fig. 1 in first embodiment of the invention；

Fig. 4 is performance indications according to the first WAP and the performance indications of the second WAP in second embodiment of the invention, it may be judged whether meet the flow chart of the first switching condition；

Fig. 5 is the structural representation of mobile terminal in third embodiment of the invention；

Fig. 6 is the structural representation of mobile terminal in fourth embodiment of the invention；

Fig. 7 is the structural representation of mobile terminal in fifth embodiment of the invention.

Detailed description of the invention

It is more fully described the exemplary embodiment of the disclosure below with reference to accompanying drawings.Although accompanying drawing showing the exemplary embodiment of the disclosure, it being understood, however, that may be realized in various forms the disclosure and should not limited by embodiments set forth here.On the contrary, it is provided that these embodiments are able to be best understood from the disclosure, and complete for the scope of the present disclosure can be conveyed to those skilled in the art.

First embodiment

As it is shown in figure 1, the first embodiment of the present invention provides a kind of method switching WAP, the method includes:

Step S101, when mobile terminal and the first WAP connect, it may be judged whether meet and preset switching condition.

In the first embodiment of the present invention, mobile terminal can be smart mobile phone, panel computer etc..

Step S102, when meeting default switching condition, obtains the performance indications of one or more WAPs that mobile terminal had connected.

In the first embodiment of the present invention, trigger the implementation that step S102 obtains the performance indications of one or more WAPs that mobile terminal had connected, can elaborate later.

Step S103, according to the performance indications of one or more WAPs, selects second WAP from one or more WAPs.

In the first embodiment of the present invention, the performance indications of the one or more WAPs that can have been connected by the mobile terminal got, the one or more WAPs connected mobile terminal carry out integrated ordered, and then therefrom select optimal WAP (the i.e. second WAP), in order to the follow-up switching carrying out WAP.

Step S104, according to performance indications and the performance indications of the second WAP of the first WAP, it may be judged whether meet the first switching condition.

In the first embodiment of the present invention, in order to so that mobile terminal can access optimal WAP, promote user to surf the Net experience, therefore, only it is better than the performance indications of the first WAP (i.e. when the performance indications of the second WAP, meet the first switching condition) time, just can perform subsequent step S105.

Step S105, when meeting the first switching condition, moves the hand-off process of the wireless connections of terminal.

In the first embodiment of the present invention, above-mentioned steps S101 judging whether, the specific implementation meeting default switching condition can be different because default switching condition is different.

Specifically, when above-mentioned default switching condition is: when the mobile step number of the user carrying mobile terminal is more than the step number threshold value preset, step S101 judging whether, the step meeting default switching condition specifically includes: whether judge to carry the mobile step number of the user of mobile terminal more than the step number threshold value (such as 50 step) preset, when mobile step number is more than the step number threshold value preset, the judged result obtained presets switching condition for meeting.Wherein, can detect and obtain the mobile step number of the user carrying mobile terminal by the acceleration transducer in mobile terminal, specifically, when acceleration transducer detects the translational acceleration of mobile terminal more than the translational acceleration amplitude threshold prestored, then will be considered that the user's shifting carrying mobile terminal moves a step.

And when above-mentioned default switching condition is: when the mobile step number of the user carrying mobile terminal is less than, less than or equal to the signal intensity of the step number threshold value preset and the first WAP, the signal strength threshold preset, as in figure 2 it is shown, step S101 judging whether, the step meeting default switching condition specifically includes:

Step S201, it is judged that whether the mobile step number of the user carrying mobile terminal is more than the step number threshold value preset, when mobile step number is less than or equal to the step number threshold value preset, execution step S202；

Step S202, continue to judge that whether the signal intensity of the first WAP is less than or equal to the signal strength threshold preset, when the signal intensity of the first WAP is less than or equal to the signal strength threshold preset, perform step S203, and when the signal intensity of the first WAP is more than the signal strength threshold preset, perform step S204；

Step S203, the judged result obtained presets switching condition for meeting；

Step S204, terminates flow process.

In the first embodiment of the present invention, the implementation triggering the performance indications that above-mentioned steps S102 obtains one or more WAPs that mobile terminal had connected is as follows:

When meeting default switching condition, the first log prestored in a Preset Time (such as 20 seconds) is to mobile terminal (it should be noted that, this first log can be according to the wireless connections situation of mobile terminal, carry out real-time update) in channel corresponding to the channel frequency of WAP be scanned, obtain the performance indications of one or more WAPs that mobile terminal had connected.Wherein, in the first log, at least storage has the WAP that mobile terminal had connected, and the channel frequency of this WAP.Due in first kind of way, can be scanned every the channel that the channel frequency of the WAP in the Preset Time the first log to prestoring is corresponding, thus avoiding when the first log has renewal (i.e. increasing WAP newly), the situation of the performance indications not obtaining newly-increased WAP occurs.It should be noted that, the channel corresponding due to the channel frequency of the WAP in the Preset Time the first log to prestoring is scanned, carry out while mobile terminal and the first WAP connect, such that it is able to increase substantially the efficiency of wireless access spot scan, shorten mobile terminal and carry out the time of WAP switching.

In the first embodiment of the present invention, as it is shown on figure 3, above-mentioned steps S102 specifically includes:

Step S301, according to the signal intensity of the WAP that mobile terminal had connected, is calculated the first fractional value of performance indications for characterizing the WAP that mobile terminal had connected.

In the first embodiment of the present invention, formula y1=L1/ (1+exp (-k1* (rssi1-rssi2))) can be passed through and be calculated the first fractional value, wherein, y1 represents the first fractional value, L1 represents the first preset fraction value (such as 50 points), k1 represents first environment interference coefficient, rssi1 represents the signal intensity of the WAP that mobile terminal connected, rssi2 represents the first preset signal strength value, and exp represents the natural constant e in higher mathematics.It should be noted that the value of k1 can be set to 0.16, the value of rssi2 can be set to-70 or-60.It is understood that in the first embodiment of the present invention, not limiting the concrete numerical value of k1 and rssi2, it can be adjusted according to actual needs.

Step S302, from the second log prestored, inquiry is for characterizing second fractional value connecting number of times of the WAP that mobile terminal connected by user, and the channel frequency of WAP that mobile terminal had connected.

In the first embodiment of the present invention, above-mentioned second fractional value also characterizes the fancy grade of the WAP that mobile terminal had been connected by user, i.e. user's more hobby, connects number of times the most.It is specifically according to selecting behavior during WAP to set before user.Such as, when mobile terminal is in the case of the WAP connecting strong signal, user but selects to be switched to the WAP of weak signal, like this, the WAP bonus point of this weak signal will be given, will second fractional value of WAP of this weak signal be set as on the occasion of (such as+5 points).So it is easy to follow-up carrying out wireless connections switching when, switches to optimal WAP.It should be noted that this second log and above-mentioned first log can be same logs.

Step S303, according to channel frequency and the corresponding relation of fractional value of the WAP prestored, obtains the 3rd fractional value that the channel frequency of the WAP connected with mobile terminal is corresponding.

In the first embodiment of the present invention, the channel frequency of WAP with the corresponding relation of fractional value can be: if the channel frequency of WAP is 2.4G, then the fractional value that this WAP is corresponding is 5 points；If the channel frequency of WAP is 5G, then the fractional value that this WAP is corresponding is 10 points.It is understood that in the first embodiment of the present invention, do not limit in the channel frequency of WAP and the corresponding relation of fractional value, the fractional value that the concrete frequency values of WAP is corresponding with WAP.

Step S304, calculates the first fractional value, the second fractional value and first and value of the 3rd fractional value.

Step S305, using the performance indications of the WAP that first and value had connected as mobile terminal.

In the first embodiment of the present invention, the each WAP connected for mobile terminal, perform step S301, step S302, step S303, step S304 and step S305 respectively, just can obtain the performance indications of one or more WAPs that mobile terminal had connected.

In the first embodiment of the present invention, got the performance indications of one or more WAPs that mobile terminal had connected by above-mentioned steps S102 after, can be by comparing the first of each WAP that mobile terminal had connected and the size of value, and using each first first with value corresponding WAP maximum with numerical value in value as the second WAP, second WAP is selected, it is simple to subsequent movement terminal carries out the hand-off process of wireless connections from one or more WAPs that mobile terminal had connected.

nullIn the first embodiment of the present invention，By when mobile terminal and the first WAP connect，Judge whether to meet and preset switching condition，And when meeting default switching condition，Performance indications according to one or more WAPs that mobile terminal had connected，Second WAP is selected from one or more WAPs，And according to the performance indications of the first WAP and the performance indications of the second WAP，Judge whether to meet the first switching condition，And when meeting the first switching condition，Move the hand-off process of the wireless connections of terminal，Solve mobile terminal in the environment of many wireless apss，The time of switching WAP is long，User surfs the Net and experiences poor problem，Reach to make mobile terminal in the environment of many WAPs，It is quickly switched into the WAP of optimum，Promote the effect that the online of user is experienced.

Second embodiment

First embodiment above simply describes the method for the switching WAP of the present invention, will introduce it further based on first embodiment below.

As shown in Figure 4, according to performance indications and the performance indications of the second WAP of the first WAP, it may be judged whether meet the first switching condition and specifically include following steps:

Step S401, according to the signal intensity of the first WAP, is calculated the 4th fractional value of performance indications for characterizing the first WAP.

In the second embodiment of the present invention, formula y2=L2/ (1+exp (-k2* (rssi3-rssi4))) can be passed through and be calculated the 4th fractional value, wherein, y2 represents the 4th fractional value, L2 represents the second preset fraction value (such as 50 points), and k2 represents second environment interference coefficient, and rssi3 represents the signal intensity of the first WAP, rssi4 represents the second preset signal strength value, and exp represents the natural constant e in higher mathematics.It should be noted that the value of k2 can be set to 0.16, the value of rssi4 can be set to-70 or-60.It is understood that in the second embodiment of the present invention, do not limit the concrete numerical value of k2 and rssi4, it can be adjusted according to actual needs.

Step S402, from the second log, inquiry connects the 5th fractional value of number of times, and the channel frequency of the first WAP for characterizing user to the first WAP.

In the second embodiment of the present invention, above-mentioned 5th fractional value also characterizes user's fancy grade to the first WAP, i.e. user's more hobby, connects number of times the most.It is specifically according to selecting behavior during WAP to set before user.Such as, when mobile terminal is in the case of the WAP connecting strong signal, user but selects to be switched to the first WAP of weak signal, like this, the first WAP bonus point of this weak signal will be given, will the 5th fractional value of the first WAP of this weak signal be set as on the occasion of (such as+5 points).So it is easy to follow-up carrying out wireless connections switching when, switches to optimal WAP.

Step S403, according to channel frequency and the corresponding relation of fractional value of the WAP prestored, obtains sixth fractional value corresponding with the channel frequency of the first WAP.

In the second embodiment of the present invention, the channel frequency of WAP with the corresponding relation of fractional value can be: if the channel frequency of WAP is 2.4G, then the fractional value that this WAP is corresponding is 5 points；If the channel frequency of WAP is 5G, then the fractional value that this WAP is corresponding is 10 points.It is understood that in the second embodiment of the present invention, do not limit in the channel frequency of WAP and the corresponding relation of fractional value, the fractional value that the concrete frequency values of WAP is corresponding with WAP.

Step S404, corresponding relation according to the connected mode prestored Yu fractional value, determine and connect the 7th fractional value that the connected mode of the first WAP is corresponding with mobile terminal, and calculate the 4th fractional value, the 5th fractional value, the 6th fractional value and second and value of the 7th fractional value.

Wherein, above-mentioned connected mode includes manually connecting (i.e. user manually connects) and being certainly dynamically connected.

In the second embodiment of the present invention, if the mode that mobile terminal connects WAP is that user manually connects, so corresponding fractional value is 10 points, and if the mode that mobile terminal connects WAP is from being dynamically connected on, then the fractional value of correspondence is 5 points.Therefore, if it is that user manually connects that mobile terminal connects the connected mode of the first WAP, then the 7th fractional value is 10 points, and if the connected mode that mobile terminal connects the first WAP is on being dynamically connected, then the 7th fractional value is 5 points.It is understood that in the second embodiment of the present invention, do not limit in the corresponding relation of connected mode and fractional value, the concrete form of connected mode and the concrete numerical value of fractional value.

Step S405, judge whether mobile terminal can be with network-in-dialing after accessing the first WAP, if mobile terminal is energy and network-in-dialing after accessing the first WAP, then perform step S406, if mobile terminal can not then perform step S407 with network-in-dialing after accessing the first WAP.

Step S406, calculates the 3rd difference between first and value and second and value of the second WAP, and judges that the 3rd difference, whether more than zero, if the 3rd difference is more than zero, then performs step S409, if the 3rd difference is less than or equal to zero, then perform step S410.

Step S407, calculates the first difference between second and value and the first preset value, and continues executing with step S408.

In the second embodiment of the present invention, above-mentioned first preset value can be 1000 points.It is understood that in the second embodiment of the present invention, do not limit the concrete numerical value of the first preset value.

Step S408, calculates the second difference between first and value of the second WAP and the first difference, and judges that the second difference, whether more than zero, if the second difference is more than zero, then performs step S409, if the second difference is less than or equal to zero, then perform step S410.

Step S409, the judged result obtained is for meeting the first switching condition.

Step S410, the judged result obtained is for being unsatisfactory for the first switching condition.

In the second embodiment of the present invention, when the performance indications according to the first WAP and the performance indications of the second WAP, it is judged that when meeting the first switching condition, the hand-off process of the wireless connections moving terminal specifically includes following steps:

The first step, key authentication second WAP of the second WAP by prestoring, and judge whether the IP log prestored exists the record information corresponding with the title of the second WAP, if the IP log prestored exists the record information corresponding with the title of the second WAP, then perform second step；If the IP log prestored does not exists the record information corresponding with the title of described second WAP, then perform the 3rd step.

In the second embodiment of the present invention, above-mentioned record information at least includes physics (MAC) address of the Dynamic Host Configuration Protocol server that the second WAP is corresponding, gateway ip address, subnet mask, domain name system (DNS, DomainNameSystem) and lease time.

Second step, by last for Dynamic Host Configuration Protocol server corresponding for the second WAP gateway ip address to mobile terminal distribution, is allocated to mobile terminal, makes mobile terminal access the second WAP.

In the second embodiment of the present invention, can be in record information corresponding with the title of the second WAP from IP log, obtain the last gateway ip address to mobile terminal distribution of Dynamic Host Configuration Protocol server corresponding to the second WAP, and this gateway ip address is allocated to mobile terminal.Like this, if in IP log during the corresponding multiple gateway ip address of the title of the second WAP, the last gateway ip address to mobile terminal distribution of Dynamic Host Configuration Protocol server corresponding to the second WAP can be quickly found, in order to mobile terminal high-speed communication the second WAP.

3rd step, receives Dynamic Host Configuration Protocol server corresponding to the second WAP currently to the gateway ip address of mobile terminal distribution, and this gateway ip address is allocated to mobile terminal, make mobile terminal access the second WAP.

nullIn the second embodiment of the present invention，By when mobile terminal and the first WAP connect，Judge whether to meet and preset switching condition，And when meeting default switching condition，Performance indications according to one or more WAPs that mobile terminal had connected，Second WAP is selected from one or more WAPs，And according to the performance indications of the first WAP and the performance indications of the second WAP，Judge whether to meet the first switching condition，And when meeting the first switching condition，By last for Dynamic Host Configuration Protocol server corresponding for the second WAP gateway ip address to mobile terminal distribution，It is allocated to mobile terminal，Mobile terminal is made to quickly access the second WAP，Solve mobile terminal in the environment of many wireless apss，The time of switching WAP is long，User surfs the Net and experiences poor problem，Reach to make mobile terminal in the environment of many WAPs，It is quickly switched into the WAP of optimum，Promote the effect that the online of user is experienced.

3rd embodiment

As it is shown in figure 5, the third embodiment of the present invention provides a kind of mobile terminal, this mobile terminal includes:

First judge module 501, is used for when mobile terminal and the first WAP connect, it may be judged whether meet and preset switching condition, and when meeting default switching condition, trigger acquisition module 502；

In the third embodiment of the present invention, mobile terminal can be smart mobile phone, panel computer etc..

Acquisition module 502, for the triggering according to the first judge module 501, obtains the performance indications of one or more WAPs that mobile terminal had connected；

Select module 503, for the performance indications according to one or more WAPs, from one or more WAPs, select second WAP；

Second judge module 504, for the performance indications according to the first WAP and the performance indications of the second WAP, it may be judged whether meet the first switching condition, and when meeting the first switching condition, trigger handover module 505；

Handover module 505, for the triggering according to the second judge module 504, moves the hand-off process of the wireless connections of terminal.

Alternatively, if above-mentioned default switching condition is: the mobile step number of the user carrying mobile terminal is more than the step number threshold value preset, and the most above-mentioned first judge module 501 includes:

First judges submodule, and for judging whether the mobile step number carrying the user of mobile terminal is more than the step number threshold value preset, and when mobile step number is more than the step number threshold value preset, triggering first determines submodule；

First determines submodule, and for according to the first triggering judging submodule, the judged result obtained presets switching condition for meeting.

In the third embodiment of the present invention, above-mentioned default step number threshold value can be 50 steps.

Alternatively, if above-mentioned default switching condition is: the mobile step number of the user carrying mobile terminal is less than, less than or equal to the signal intensity of the step number threshold value preset and the first WAP, the signal strength threshold preset, and the most above-mentioned first judge module 501 includes:

Second judges submodule, and for judging whether the mobile step number carrying the user of mobile terminal is more than the step number threshold value preset, and when mobile step number is less than or equal to the step number threshold value preset, triggering the 3rd judges submodule；

3rd judges submodule, for judging the triggering of submodule according to second, judge that whether the signal intensity of the first WAP is less than or equal to the signal strength threshold preset, and when the signal intensity of the first WAP is less than or equal to the signal strength threshold preset, triggers second and determine submodule；

Second determines submodule, and for according to the 3rd triggering judging submodule, the judged result obtained presets switching condition for meeting.

Alternatively, above-mentioned acquisition module 502 includes:

First obtains submodule, for when meeting default switching condition, the channel that the channel frequency of the WAP in the Preset Time the first log to prestoring is corresponding is scanned, obtain the performance indications of one or more WAPs that mobile terminal had connected, in first log, at least storage has the WAP that mobile terminal had connected, and the channel frequency of this WAP.

In the third embodiment of the present invention, above-mentioned first log can carry out real-time update according to the wireless connections situation of mobile terminal.

Alternatively, the first acquisition submodule includes:

First computing unit, for the signal intensity of WAP connected according to mobile terminal, is calculated the first fractional value of performance indications for characterizing the WAP that mobile terminal had connected；

Wherein, this first computing unit includes:

First computation subunit, for being calculated the first fractional value by formula y1=L1/ (1+exp (-k1* (rssi1-rssi2))), wherein, y1 represents the first fractional value, L1 represents the first preset fraction value, k1 represents first environment interference coefficient, and rssi1 represents the signal intensity of the WAP that mobile terminal connected, and rssi2 represents the first preset signal strength value.

In the third embodiment of the present invention, the value of k1 can be set to 0.16, and the value of rssi2 can be set to-70 or-60.It is understood that in the third embodiment of the present invention, do not limit the concrete numerical value of k1 and rssi2, it can be adjusted according to actual needs.

First query unit, for from the second log prestored, second fractional value connecting number of times of the WAP that mobile terminal had been connected by inquiry for characterizing user, and the channel frequency of WAP that mobile terminal had connected；

First acquiring unit, for the corresponding relation of the channel frequency according to the WAP prestored with fractional value, obtains the 3rd fractional value that the channel frequency of the WAP connected with mobile terminal is corresponding；

In the third embodiment of the present invention, the channel frequency of WAP with the corresponding relation of fractional value can be: if the channel frequency of WAP is 2.4G, then the fractional value that this WAP is corresponding is 5 points；If the channel frequency of WAP is 5G, then the fractional value that this WAP is corresponding is 10 points.It is understood that in the third embodiment of the present invention, do not limit in the channel frequency of WAP and the corresponding relation of fractional value, the fractional value that the concrete frequency values of WAP is corresponding with WAP.

Second computing unit, for calculating the first fractional value, the second fractional value and the first of the 3rd fractional value and value；

Second acquisition unit, the performance indications of the WAP for first and value had been connected as mobile terminal.

Alternatively, module 503 is selected to include:

First selects submodule, for comparing the first of each WAP that mobile terminal had connected and the size of value；

Second selects submodule, for first with the value corresponding WAP maximum with numerical value in value using each first as the second WAP.

Alternatively, the second judge module 504 includes:

First calculating sub module, for according to the signal intensity of the first WAP, is calculated the 4th fractional value of performance indications for characterizing the first WAP；

Wherein, this first calculating sub module includes:

3rd computing unit, for being calculated the 4th fractional value by formula y2=L2/ (1+exp (-k2* (rssi3-rssi4))), wherein, y2 represents the 4th fractional value, L2 represents the second preset fraction value, k2 represents second environment interference coefficient, and rssi3 represents the signal intensity of the first WAP, and rssi4 represents the second preset signal strength value.

In the third embodiment of the present invention, the value of k2 can be set to 0.16, and the value of rssi4 can be set to-70 or-60.It is understood that in the third embodiment of the present invention, do not limit the concrete numerical value of k2 and rssi4, it can be adjusted according to actual needs.

First inquiry submodule, for from the second log, inquiry connects the 5th fractional value of number of times, and the channel frequency of the first WAP for characterizing user to the first WAP；

Second obtains submodule, for the corresponding relation of the channel frequency according to the WAP prestored with fractional value, obtains sixth fractional value corresponding with the channel frequency of the first WAP；

3rd obtains submodule, for the corresponding relation according to the connected mode prestored with fractional value, determine and connect the 7th fractional value that the connected mode of the first WAP is corresponding with mobile terminal, and calculate the 4th fractional value, the 5th fractional value, the 6th fractional value and second and value of the 7th fractional value；

Wherein, above-mentioned connected mode includes manually connecting and being certainly dynamically connected.

4th judges submodule, be used for judging mobile terminal after accessing the first WAP whether can with network-in-dialing, and if mobile terminal can not then trigger the second calculating sub module with network-in-dialing after accessing the first WAP；

Second calculating sub module, for according to the 4th triggering judging submodule, calculating the first difference between second and value and the first preset value；

In the third embodiment of the present invention, above-mentioned first preset value can be 1000 points.It is understood that in the third embodiment of the present invention, do not limit the concrete numerical value of the first preset value.

3rd calculating sub module, for calculating the second difference between first and value of the second WAP and the first difference, and judge that whether the second difference is more than zero, if and the second difference is more than zero, then trigger the 3rd and determine submodule, if and the second difference is less than or equal to zero, then triggers the 4th and determine submodule；

3rd determines submodule, and for the triggering according to the 3rd calculating sub module, the judged result obtained is for meeting the first switching condition；

4th determines submodule, and for the triggering according to the 3rd calculating sub module, the judged result obtained is for being unsatisfactory for the first switching condition.

Alternatively, the 4th judge submodule judge mobile terminal access after the first WAP whether can with network-in-dialing after, mobile terminal also includes:

Computing module, if for mobile terminal energy and network-in-dialing after accessing the first WAP, then calculate the 3rd difference between first and value and second and value of the second WAP, and judge that whether the 3rd difference is more than zero, if and the 3rd difference is more than zero, then trigger and first determine module, and if the 3rd difference is less than or equal to zero, then trigger second and determine module；

First determines module, and for the triggering according to computing module, the judged result obtained is for meeting the first switching condition；

Second determines module, and for the triggering according to computing module, the judged result obtained is for being unsatisfactory for the first switching condition.

Alternatively, handover module 505 includes:

5th judges submodule, key authentication the second WAP for the second WAP by prestoring, and judge whether the IP log prestored exists the record information corresponding with the title of the second WAP, and if the IP log prestored exists the record information corresponding with the title of the second WAP, then trigger the first switching submodule, and if the IP log prestored does not exists the record information corresponding with the title of the second WAP, then trigger the second switching submodule；

In the third embodiment of the present invention, above-mentioned record information at least includes physics (MAC) address of the Dynamic Host Configuration Protocol server that the second WAP is corresponding, gateway ip address, subnet mask, domain name system (DNS, DomainNameSystem) and lease time.

First switching submodule, for according to the 5th triggering judging submodule, by last for Dynamic Host Configuration Protocol server corresponding for the second WAP gateway ip address to mobile terminal distribution, being allocated to mobile terminal；

Second switching submodule, for according to the 5th triggering judging submodule, receives Dynamic Host Configuration Protocol server corresponding to the second WAP currently to the gateway ip address of mobile terminal distribution, and this gateway ip address is allocated to mobile terminal.

nullIn the third embodiment of the present invention，By when mobile terminal and the first WAP connect，Judge whether to meet and preset switching condition，And when meeting default switching condition，Performance indications according to one or more WAPs that mobile terminal had connected，Second WAP is selected from one or more WAPs，And according to the performance indications of the first WAP and the performance indications of the second WAP，Judge whether to meet the first switching condition，And when meeting the first switching condition，By last for Dynamic Host Configuration Protocol server corresponding for the second WAP gateway ip address to mobile terminal distribution，It is allocated to mobile terminal，Mobile terminal is made to quickly access the second WAP，Solve mobile terminal in the environment of many wireless apss，The time of switching WAP is long，User surfs the Net and experiences poor problem，Reach to make mobile terminal in the environment of many WAPs，It is quickly switched into the WAP of optimum，Promote the effect that the online of user is experienced.

It should be noted that, the mobile terminal that third embodiment of the invention provides is the mobile terminal of the method applying above-mentioned switching WAP, all embodiments of the method for the most above-mentioned switching WAP are all applicable to this mobile terminal, and all can reach same or analogous beneficial effect.

4th embodiment

As shown in Figure 6, for the block diagram of mobile terminal of fourth embodiment of the invention.Mobile terminal 600 shown in Fig. 6 includes: at least one processor 601, memorizer 602, at least one network interface 604 and other user interfaces 603.Each assembly in mobile terminal 600 is coupled by bus system 605.It is understood that bus system 605 is for realizing the connection communication between these assemblies.Bus system 605, in addition to including data/address bus, also includes power bus, controls bus and status signal bus in addition.But for the sake of understanding explanation, in figure 6 various buses are all designated as bus system 605.

Wherein, user interface 603 can include display, keyboard or pointing device (such as, mouse, trace ball (trackball), touch-sensitive plate or touch screen etc..

The memorizer 602 being appreciated that in the embodiment of the present invention can be volatile memory or nonvolatile memory, maybe can include volatibility and nonvolatile memory.Wherein, nonvolatile memory can be read only memory (Read-OnlyMemory, ROM), programmable read only memory (ProgrammableROM, PROM), Erasable Programmable Read Only Memory EPROM (ErasablePROM, EPROM), Electrically Erasable Read Only Memory (ElectricallyEPROM, EEPROM) or flash memory.Volatile memory can be random access memory (RandomAccessMemory, RAM), and it is used as External Cache.nullBy exemplary but be not restricted explanation，The RAM of many forms can use，Such as static RAM (StaticRAM，SRAM)、Dynamic random access memory (DynamicRAM，DRAM)、Synchronous Dynamic Random Access Memory (SynchronousDRAM，SDRAM)、Double data speed synchronous dynamic RAM (DoubleDataRateSDRAM，DDRSDRAM)、Enhancement mode Synchronous Dynamic Random Access Memory (EnhancedSDRAM，ESDRAM)、Synchronized links dynamic random access memory (SynchlinkDRAM，And direct rambus random access memory (DirectRambusRAM SLDRAM)，DRRAM).The memorizer 602 of system and method described herein is intended to include but not limited to these and the memorizer of other applicable type any.

In some embodiments, memorizer 602 stores following element, executable module or data structure, or their subset, or their superset: operating system 6021 and application program 6022.Specifically, memorizer 602 stores the corresponding relation of the first log, the second log, channel frequency and the corresponding relation of fractional value of WAP, connected mode and fractional value, and IP log etc..

Wherein, operating system 6021, comprise various system program, such as ccf layer, core library layer, driving layer etc., be used for realizing various basic business and processing hardware based task.Application program 6022, comprises various application program, and such as media player (MediaPlayer), browser (Browser) etc., be used for realizing various applied business.The program realizing embodiment of the present invention method may be embodied in application program 6022.

In embodiments of the present invention, by calling program or the instruction of memorizer 602 storage, concrete, can be program or the instruction of storage in application program 6022, processor 601 is for when mobile terminal 600 is connected with the first WAP, judge whether to meet and preset switching condition, and when meeting default switching condition, obtain the performance indications of one or more WAPs that mobile terminal 600 had connected, and according to the performance indications of one or more WAPs, second WAP is selected from one or more WAPs, finally further according to performance indications and the performance indications of the second WAP of the first WAP, judge whether to meet the first switching condition, and when meeting the first switching condition, move the hand-off process of the wireless connections of terminal 600.

The method that the invention described above embodiment discloses can apply in processor 601, or is realized by processor 601.Processor 601 is probably a kind of IC chip, has the disposal ability of signal.During realizing, each step of said method can be completed by the instruction of the integrated logic circuit of the hardware in processor 601 or software form.Above-mentioned processor 601 can be general processor, digital signal processor (DigitalSignalProcessor, DSP), special IC (ApplicationSpecificIntegratedCircuit, ASIC), ready-made programmable gate array (FieldProgrammableGateArray, FPGA) or other PLDs, discrete gate or transistor logic, discrete hardware components.Can realize or perform disclosed each method, step and the logic diagram in the embodiment of the present invention.The processor etc. that general processor can be microprocessor or this processor can also be any routine.Hardware decoding processor can be embodied directly in conjunction with the step of the method disclosed in the embodiment of the present invention to have performed, or combine execution by the hardware in decoding processor and software module and complete.Software module may be located at random access memory, flash memory, read only memory, in the storage medium that this area such as programmable read only memory or electrically erasable programmable memorizer, depositor is ripe.This storage medium is positioned at memorizer 602, and processor 601 reads the information in memorizer 602, completes the step of said method in conjunction with its hardware.

It is understood that embodiments described herein can realize by hardware, software, firmware, middleware, microcode or a combination thereof.nullHardware is realized，Processing unit can be implemented in one or more special IC (ApplicationSpecificIntegratedCircuits，ASIC)、Digital signal processor (DigitalSignalProcessing，DSP)、Digital signal processing appts (DSPDevice，DSPD)、Programmable logic device (ProgrammableLogicDevice，PLD)、Field programmable gate array (Field-ProgrammableGateArray，FPGA)、General processor、Controller、Microcontroller、Microprocessor、In other electronic unit performing herein described function or a combination thereof.

Software is realized, the techniques described herein can be realized by the module (such as process, function etc.) performing function described herein.Software code is storable in performing in memorizer and by processor.Memorizer can within a processor or realize outside processor.

Alternatively, processor 601 is additionally operable to judge whether the mobile step number of the user carrying mobile terminal 600 is more than the step number threshold value preset, and when mobile step number is more than the step number threshold value preset, the judged result obtained is to meet to preset switching condition.

Alternatively, processor 601 is additionally operable to judge that whether the mobile step number of the user carrying mobile terminal 600 is more than the step number threshold value preset, and when mobile step number is less than or equal to the step number threshold value preset, continue to judge that whether the signal intensity of the first WAP is less than or equal to the signal strength threshold preset, and when the signal intensity of the first WAP is less than or equal to the signal strength threshold preset, the judged result obtained presets switching condition for meeting.

Alternatively, processor 601 is additionally operable to when meeting default switching condition, the channel that the channel frequency of the WAP in the Preset Time the first log to prestoring is corresponding is scanned, and obtains the performance indications of one or more WAPs that mobile terminal 600 had connected.Wherein, in the first log, at least storage has the WAP that mobile terminal 600 had connected, and the channel frequency of this WAP.

Alternatively, processor 601 is additionally operable to the signal intensity of the WAP connected according to mobile terminal 600, is calculated the first fractional value of performance indications for characterizing the WAP that mobile terminal 600 had connected；From the second log prestored, inquiry is for characterizing the user's the second fractional value connecting number of times to the WAP that mobile terminal 600 had connected, and the channel frequency of WAP that mobile terminal 600 had connected；Channel frequency according to the WAP prestored and the corresponding relation of fractional value, obtain threeth fractional value corresponding with the channel frequency of the WAP that mobile terminal 600 had connected；Calculate the first fractional value, the second fractional value and first and value of the 3rd fractional value；Using the performance indications of the WAP that first and value had connected as mobile terminal 600.

Alternatively, processor 601 is additionally operable to be calculated the first fractional value by formula y1=L1/ (1+exp (-k1* (rssi1-rssi2))), wherein, y1 represents the first fractional value, L1 represents the first preset fraction value, k1 represents first environment interference coefficient, and rssi1 represents the signal intensity of the WAP that mobile terminal 600 connected, and rssi2 represents the first preset signal strength value.

Alternatively, processor 601 is additionally operable to the size of first and the value that compare each WAP that mobile terminal 600 had connected；Using each first first with value corresponding WAP maximum with numerical value in value as the second WAP.

Alternatively, processor 601 is additionally operable to the signal intensity according to the first WAP, is calculated the 4th fractional value of performance indications for characterizing the first WAP；From the second log, inquiry connects the 5th fractional value of number of times, and the channel frequency of the first WAP for characterizing user to the first WAP；Channel frequency according to the WAP prestored and the corresponding relation of fractional value, obtain sixth fractional value corresponding with the channel frequency of the first WAP；Corresponding relation according to the connected mode prestored Yu fractional value, determine and connect the 7th fractional value that the connected mode of the first WAP is corresponding with mobile terminal 600, and calculating the 4th fractional value, the 5th fractional value, the 6th fractional value and second and value of the 7th fractional value, connected mode includes manually connecting and being certainly dynamically connected；Judge mobile terminal 600 access after the first WAP whether can with network-in-dialing, and if mobile terminal 600 can not then calculate the first difference between second and value and the first preset value with network-in-dialing after accessing the first WAP；Calculate the second difference between first and value of the second WAP and the first difference, and judge that whether the second difference is more than zero, if and the second difference is more than zero, the judged result then obtained is for meeting the first switching condition, and if the second difference is less than or equal to zero, then the judged result obtained is for being unsatisfactory for the first switching condition.

Alternatively, if processor 601 is additionally operable to mobile terminal 600 energy and network-in-dialing after accessing the first WAP, then calculate the 3rd difference between first and value and second and value of the second WAP, and judge that whether the 3rd difference is more than zero, if and the 3rd difference is more than zero, the judged result then obtained for meeting the first switching condition, and if the 3rd difference is less than or equal to zero, then the judged result obtained is for being unsatisfactory for the first switching condition.

Alternatively, processor 601 is additionally operable to be calculated the 4th fractional value by formula y2=L2/ (1+exp (-k2* (rssi3-rssi4))), wherein, y2 represents the 4th fractional value, L2 represents the second preset fraction value, k2 represents second environment interference coefficient, and rssi3 represents the signal intensity of the first WAP, and rssi4 represents the second preset signal strength value.

nullAlternatively，Processor 601 is additionally operable to key authentication second WAP of the second WAP by prestoring，And judge whether the IP log prestored exists the record information corresponding with the title of the second WAP，Record information at least includes MAC Address and the gateway ip address of the Dynamic Host Configuration Protocol server that the second WAP is corresponding，If the IP log prestored exists the record information corresponding with the title of the second WAP，The gateway ip address then the Dynamic Host Configuration Protocol server last time corresponding for the second WAP distributed to mobile terminal 600，It is allocated to mobile terminal 600，And if the IP log prestored not existing the record information corresponding with the title of the second WAP，Then receive Dynamic Host Configuration Protocol server corresponding to the second WAP currently to the gateway ip address of mobile terminal 600 distribution，And this gateway ip address is allocated to mobile terminal 600.

Mobile terminal 600 is capable of each process that in previous embodiment, mobile terminal realizes, and for avoiding repeating, repeats no more here.

nullIn the fourth embodiment of the present invention，By when mobile terminal 600 is connected with the first WAP，Judge whether to meet and preset switching condition，And when meeting default switching condition，Performance indications according to one or more WAPs that mobile terminal 600 had connected，Second WAP is selected from one or more WAPs，And according to the performance indications of the first WAP and the performance indications of the second WAP，Judge whether to meet the first switching condition，And when meeting the first switching condition，Move the hand-off process of the wireless connections of terminal 600，Solve mobile terminal 600 in the environment of many wireless apss，The time of switching WAP is long，User surfs the Net and experiences poor problem，Reach to make mobile terminal 600 in the environment of many WAPs，It is quickly switched into the WAP of optimum，Promote the effect that the online of user is experienced.

5th embodiment

As it is shown in fig. 7, be the structural representation of the mobile terminal of fifth embodiment of the invention.Specifically, the mobile terminal 700 in Fig. 7 can be mobile phone, panel computer, personal digital assistant (PersonalDigitalAssistant, PDA) or vehicle-mounted computer etc..

Mobile terminal 700 in Fig. 7 includes radio frequency (RadioFrequency, RF) circuit 710, memorizer 720, input block 730, display unit 740, processor 760, voicefrequency circuit 770, WiFi (WirelessFidelity) module 780 and power supply 790.

Wherein, input block 730 can be used for receiving numeral or the character information of user's input, and produces the signal input relevant with the user setup of mobile terminal 700 and function control.Specifically, in the embodiment of the present invention, this input block 730 can include contact panel 731.Contact panel 731, also referred to as touch screen, user can be collected thereon or neighbouring touch operation (such as user uses any applicable object such as finger, stylus or adnexa operation on contact panel 731), and drive corresponding attachment means according to formula set in advance.Optionally, contact panel 731 can include touch detecting apparatus and two parts of touch controller.Wherein, the touch orientation of touch detecting apparatus detection user, and detect the signal that touch operation brings, transmit a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and is converted into contact coordinate, then gives this processor 760, and can receive order that processor 760 sends and be performed.Furthermore, it is possible to use the polytypes such as resistance-type, condenser type, infrared ray and surface acoustic wave to realize contact panel 731.Except contact panel 731, input block 730 can also include other input equipments 732, and other input equipments 732 can include but not limited to one or more in physical keyboard, function key (such as volume control button, switch key etc.), trace ball, mouse, action bars etc..

Wherein, display unit 740 can be used for showing the information inputted by user or the information being supplied to user and the various menu interfaces of mobile terminal 700.Display unit 740 can include display floater 741, optionally, the form such as LCD or Organic Light Emitting Diode (OrganicLight-EmittingDiode, OLED) can be used to configure display floater 741.

It should be noted that, contact panel 731 can cover display floater 741, formed and touch display screen, when this touch display screen detects thereon or after neighbouring touch operation, send processor 760 to determine the type of touch event, display screen on provide corresponding visual output according to the type of touch event touching with preprocessor 760.

Touch display screen and include Application Program Interface viewing area and conventional control viewing area.The arrangement mode of this Application Program Interface viewing area and this conventional control viewing area does not limit, can be arranged above and below, left-right situs etc. can distinguish the arrangement mode of two viewing areas.This Application Program Interface viewing area is displayed for the interface of application program.Each interface can comprise the interface elements such as icon and/or the widget desktop control of at least one application program.This Application Program Interface viewing area can also be the empty interface not comprising any content.This conventional control viewing area is for showing the control that utilization rate is higher, such as, and the application icon etc. such as settings button, interface numbering, scroll bar, phone directory icon.

Wherein processor 760 is the control centre of mobile terminal 700, utilize various interface and the various piece of the whole mobile phone of connection, it is stored in the software program in first memory 721 and/or module by running or performing, and call the data being stored in second memory 722, perform the various functions of mobile terminal 700 and process data, thus mobile terminal 700 is carried out integral monitoring.Optionally, processor 760 can include one or more processing unit.Wherein, second memory 722 stores the corresponding relation of the first log, the second log, channel frequency and the corresponding relation of fractional value of WAP, connected mode and fractional value, and IP log etc..

In embodiments of the present invention, by calling the data in the software program and/or module and/or this second memory 722 stored in this first memory 721, processor 760 is for when mobile terminal 700 is connected with the first WAP, judge whether to meet and preset switching condition, and when meeting default switching condition, obtain the performance indications of one or more WAPs that mobile terminal 700 had connected, and according to the performance indications of one or more WAPs, second WAP is selected from one or more WAPs, finally further according to performance indications and the performance indications of the second WAP of the first WAP, judge whether to meet the first switching condition, and when meeting the first switching condition, move the hand-off process of the wireless connections of terminal 700.

Alternatively, processor 760 is additionally operable to judge whether the mobile step number of the user carrying mobile terminal 700 is more than the step number threshold value preset, and when mobile step number is more than the step number threshold value preset, the judged result obtained is to meet to preset switching condition.

Alternatively, processor 760 is additionally operable to judge that whether the mobile step number of the user carrying mobile terminal 700 is more than the step number threshold value preset, and when mobile step number is less than or equal to the step number threshold value preset, continue to judge that whether the signal intensity of the first WAP is less than or equal to the signal strength threshold preset, and when the signal intensity of the first WAP is less than or equal to the signal strength threshold preset, the judged result obtained presets switching condition for meeting.

Alternatively, processor 760 is additionally operable to when meeting default switching condition, the channel that the channel frequency of the WAP in the Preset Time the first log to prestoring is corresponding is scanned, and obtains the performance indications of one or more WAPs that mobile terminal 700 had connected.Wherein, in the first log, at least storage has the WAP that mobile terminal 700 had connected, and the channel frequency of this WAP.

Alternatively, processor 760 is additionally operable to the signal intensity of the WAP connected according to mobile terminal 700, is calculated the first fractional value of performance indications for characterizing the WAP that mobile terminal 700 had connected；From the second log prestored, inquiry is for characterizing the user's the second fractional value connecting number of times to the WAP that mobile terminal 700 had connected, and the channel frequency of WAP that mobile terminal 700 had connected；Channel frequency according to the WAP prestored and the corresponding relation of fractional value, obtain threeth fractional value corresponding with the channel frequency of the WAP that mobile terminal 700 had connected；Calculate the first fractional value, the second fractional value and first and value of the 3rd fractional value；Using the performance indications of the WAP that first and value had connected as mobile terminal 700.

Alternatively, processor 760 is additionally operable to be calculated the first fractional value by formula y1=L1/ (1+exp (-k1* (rssi1-rssi2))), wherein, y1 represents the first fractional value, L1 represents the first preset fraction value, k1 represents first environment interference coefficient, and rssi1 represents the signal intensity of the WAP that mobile terminal 700 connected, and rssi2 represents the first preset signal strength value.

Alternatively, processor 760 is additionally operable to the size of first and the value that compare each WAP that mobile terminal 700 had connected；Using each first first with value corresponding WAP maximum with numerical value in value as the second WAP.

Alternatively, processor 760 is additionally operable to the signal intensity according to the first WAP, is calculated the 4th fractional value of performance indications for characterizing the first WAP；From the second log, inquiry connects the 5th fractional value of number of times, and the channel frequency of the first WAP for characterizing user to the first WAP；Channel frequency according to the WAP prestored and the corresponding relation of fractional value, obtain sixth fractional value corresponding with the channel frequency of the first WAP；Corresponding relation according to the connected mode prestored Yu fractional value, determine and connect the 7th fractional value that the connected mode of the first WAP is corresponding with mobile terminal 700, and calculating the 4th fractional value, the 5th fractional value, the 6th fractional value and second and value of the 7th fractional value, connected mode includes manually connecting and being certainly dynamically connected；Judge mobile terminal 700 access after the first WAP whether can with network-in-dialing, and if mobile terminal 700 can not then calculate the first difference between second and value and the first preset value with network-in-dialing after accessing the first WAP；Calculate the second difference between first and value of the second WAP and the first difference, and judge that whether the second difference is more than zero, if and the second difference is more than zero, the judged result then obtained is for meeting the first switching condition, and if the second difference is less than or equal to zero, then the judged result obtained is for being unsatisfactory for the first switching condition.

Alternatively, if processor 760 is additionally operable to mobile terminal 700 energy and network-in-dialing after accessing the first WAP, then calculate the 3rd difference between first and value and second and value of the second WAP, and judge that whether the 3rd difference is more than zero, if and the 3rd difference is more than zero, the judged result then obtained for meeting the first switching condition, and if the 3rd difference is less than or equal to zero, then the judged result obtained is for being unsatisfactory for the first switching condition.

Alternatively, processor 760 is additionally operable to be calculated the 4th fractional value by formula y2=L2/ (1+exp (-k2* (rssi3-rssi4))), wherein, y2 represents the 4th fractional value, L2 represents the second preset fraction value, k2 represents second environment interference coefficient, and rssi3 represents the signal intensity of the first WAP, and rssi4 represents the second preset signal strength value.

nullAlternatively，Processor 760 is additionally operable to key authentication second WAP of the second WAP by prestoring，And judge whether the IP log prestored exists the record information corresponding with the title of the second WAP，Record information at least includes MAC Address and the gateway ip address of the Dynamic Host Configuration Protocol server that the second WAP is corresponding，If the IP log prestored exists the record information corresponding with the title of the second WAP，The gateway ip address then the Dynamic Host Configuration Protocol server last time corresponding for the second WAP distributed to mobile terminal 700，It is allocated to mobile terminal 700，And if the IP log prestored not existing the record information corresponding with the title of the second WAP，Then receive Dynamic Host Configuration Protocol server corresponding to the second WAP currently to the gateway ip address of mobile terminal 700 distribution，And this gateway ip address is allocated to mobile terminal 700.

nullVisible，In the fifth embodiment of the present invention，By when mobile terminal and the first WAP connect，Judge whether to meet and preset switching condition，And when meeting default switching condition，Performance indications according to one or more WAPs that mobile terminal had connected，Second WAP is selected from one or more WAPs，And according to the performance indications of the first WAP and the performance indications of the second WAP，Judge whether to meet the first switching condition，And when meeting the first switching condition，Move the hand-off process of the wireless connections of terminal，Solve mobile terminal in the environment of many wireless apss，The time of switching WAP is long，User surfs the Net and experiences poor problem，Reach to make mobile terminal in the environment of many WAPs，It is quickly switched into the WAP of optimum，Promote the effect that the online of user is experienced.

Those of ordinary skill in the art are it is to be appreciated that combine the unit of each example and the algorithm steps that the embodiments described herein describes, it is possible to being implemented in combination in of electronic hardware or computer software and electronic hardware.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use different methods to realize described function to each specifically should being used for, but this realization is it is not considered that beyond the scope of this invention.

Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description, the specific works process of the system of foregoing description, device and unit, it is referred to the corresponding process in preceding method embodiment, does not repeats them here.

In embodiment provided herein, it should be understood that disclosed apparatus and method, can realize by another way.Such as, device embodiment described above is only schematically, such as, the division of described unit, be only a kind of logic function to divide, actual can have when realizing other dividing mode, the most multiple unit or assembly can in conjunction with or be desirably integrated into another system, or some features can ignore, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be the INDIRECT COUPLING by some interfaces, device or unit or communication connection, can be electrical, machinery or other form.

The described unit illustrated as separating component can be or may not be physically separate, and the parts shown as unit can be or may not be physical location, i.e. may be located at a place, or can also be distributed on multiple NE.Some or all of unit therein can be selected according to the actual needs to realize the purpose of the present embodiment scheme.

It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it is also possible to be that unit is individually physically present, it is also possible to two or more unit are integrated in a unit.

If described function is using the form realization of SFU software functional unit and as independent production marketing or use, can be stored in a computer read/write memory medium.Based on such understanding, part or the part of this technical scheme that prior art is contributed by technical scheme the most in other words can embody with the form of software product, this computer software product is stored in a storage medium, including some instructions with so that a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium includes: the various media that can store program code such as USB flash disk, portable hard drive, ROM, RAM, magnetic disc or CDs.

The above; being only the detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; change can be readily occurred in or replace, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with scope of the claims.

Claims

1. the method switching WAP, it is characterised in that described method includes:

When meeting described default switching condition, obtain the performance indications of one or more WAPs that described mobile terminal had connected；

According to the performance indications of the one or more WAP, from the one or more WAP, select second WAP；

Performance indications according to described first WAP and the performance indications of described second WAP, it may be judged whether meet the first switching condition；

When meeting described first switching condition, carry out the hand-off process of the wireless connections of described mobile terminal.

Method the most according to claim 1, it is characterised in that

Described judging whether meets default switching condition, including:

Judge that whether the mobile step number carrying the user of described mobile terminal is more than the step number threshold value preset；

When described mobile step number is more than the step number threshold value preset, the judged result obtained is for meeting described default switching condition.

Method the most according to claim 1, it is characterised in that described in judge whether meet preset switching condition, including:

When described mobile step number is less than or equal to the step number threshold value preset, it is judged that whether the signal intensity of described first WAP is less than or equal to the signal strength threshold preset；

When the signal intensity of described first WAP is less than or equal to the signal strength threshold preset, the judged result obtained is for meeting described default switching condition.

Method the most according to claim 1, it is characterised in that described when meeting described default switching condition, obtains the performance indications of one or more WAPs that described mobile terminal had connected, including:

When meeting described default switching condition, the channel that the channel frequency of the WAP in the Preset Time the first log to prestoring is corresponding is scanned, obtain the performance indications of one or more WAPs that described mobile terminal had connected, in described first log, at least storage has the WAP that described mobile terminal had connected, and the channel frequency of this WAP.

5. method as claimed in claim 4, it is characterised in that the performance indications of one or more WAPs that the described mobile terminal of described acquisition had connected, including:

According to the signal intensity of the WAP that described mobile terminal had connected, it is calculated the first fractional value of performance indications for characterizing the WAP that described mobile terminal had connected；

From the second log prestored, inquiry is for characterizing the user's the second fractional value connecting number of times to the WAP that described mobile terminal had connected, and the channel frequency of WAP that described mobile terminal had connected；

Channel frequency according to the WAP prestored and the corresponding relation of fractional value, obtain threeth fractional value corresponding with the channel frequency of the WAP that described mobile terminal had connected；

Calculate described first fractional value, described second fractional value and first and value of described 3rd fractional value；

Using the performance indications of the WAP that described first and value had connected as described mobile terminal.

6. method as claimed in claim 5, it is characterized in that, the signal intensity of the described WAP connected according to described mobile terminal, is calculated the first fractional value of performance indications for characterizing the WAP that described mobile terminal had connected, including:

It is calculated described first fractional value by formula y1=L1/ (1+exp (-k1* (rssi1-rssi2))), wherein, y1 represents described first fractional value, L1 represents the first preset fraction value, k1 represents first environment interference coefficient, rssi1 represents the signal intensity of the WAP that described mobile terminal connected, and rssi2 represents the first preset signal strength value.

7. method as claimed in claim 5, it is characterised in that the described performance indications according to the one or more WAP, selects second WAP from the one or more WAP, including:

The size of first and value of each WAP that relatively described mobile terminal had connected；

Using each first first with value corresponding WAP maximum with numerical value in value as the second WAP.

8. method as claimed in claim 7, it is characterised in that the described performance indications according to described first WAP and the performance indications of described second WAP, it may be judged whether meet the first switching condition, including:

According to the signal intensity of described first WAP, it is calculated the 4th fractional value of performance indications for characterizing described first WAP；

From described second log, inquiry connects the 5th fractional value of number of times, and the channel frequency of described first WAP for characterizing user to described first WAP；

Channel frequency according to the WAP prestored and the corresponding relation of fractional value, obtain sixth fractional value corresponding with the channel frequency of described first WAP；

Corresponding relation according to the connected mode prestored Yu fractional value, determine seventh fractional value corresponding with the connected mode of described mobile terminal described first WAP of connection, and calculating described 4th fractional value, described 5th fractional value, described 6th fractional value and second and value of described 7th fractional value, described connected mode includes manually connecting and being certainly dynamically connected；

Judge whether described mobile terminal can be with network-in-dialing after accessing described first WAP；

If described mobile terminal can not then calculate the first difference between described second and value and the first preset value with network-in-dialing after accessing described first WAP；

Calculate the second difference between first and value of described second WAP and described first difference, and judge that whether described second difference is more than zero；

If described second difference is more than zero, then the judged result obtained is for meeting described first switching condition；

If described second difference is less than or equal to zero, then the judged result obtained is for being unsatisfactory for described first switching condition.

9. method as claimed in claim 8, it is characterised in that described judge described mobile terminal after accessing described first WAP whether can with network-in-dialing after, described method also includes:

If described mobile terminal is energy and network-in-dialing after accessing described first WAP, then calculate the 3rd difference between first and value and described second and the value of described second WAP, and judge that whether described 3rd difference is more than zero；

If described 3rd difference is more than zero, then the judged result obtained is for meeting described first switching condition；

If described 3rd difference is less than or equal to zero, then the judged result obtained is for being unsatisfactory for described first switching condition.

10. method as claimed in claim 8, it is characterised in that the described signal intensity according to described first WAP, is calculated the 4th fractional value of performance indications for characterizing described first WAP, including:

It is calculated described 4th fractional value by formula y2=L2/ (1+exp (-k2* (rssi3-rssi4))), wherein, y2 represents described 4th fractional value, L2 represents the second preset fraction value, k2 represents second environment interference coefficient, rssi3 represents the signal intensity of the first WAP, and rssi4 represents the second preset signal strength value.

11. the method for claim 1, it is characterised in that described when meeting described first switching condition, carry out the hand-off process of the wireless connections of described mobile terminal, including:

By the second WAP described in the key authentication of described second WAP prestored, and judging whether the IP log prestored exists the record information corresponding with the title of described second WAP, described record information at least includes MAC Address and the gateway ip address of the Dynamic Host Configuration Protocol server that the second WAP is corresponding；

If the IP log prestored exists the record information corresponding with the title of described second WAP, then the Dynamic Host Configuration Protocol server last time corresponding for described second WAP is given the gateway ip address of described mobile terminal distribution, is allocated to described mobile terminal；

If the IP log prestored does not exists the record information corresponding with the title of described second WAP, then receive Dynamic Host Configuration Protocol server corresponding to described second WAP currently to the gateway ip address of described mobile terminal distribution, and this gateway ip address is allocated to described mobile terminal.

12. 1 kinds of mobile terminals, it is characterised in that described mobile terminal includes:

First judge module, for when mobile terminal and the first WAP connect, it may be judged whether meet and preset switching condition, and when meeting described default switching condition, trigger acquisition module；

Acquisition module, for the triggering according to described first judge module, obtains the performance indications of one or more WAPs that described mobile terminal had connected；

Select module, for the performance indications according to the one or more WAP, from the one or more WAP, select second WAP；

Second judge module, for the performance indications according to described first WAP and the performance indications of described second WAP, it may be judged whether meet the first switching condition, and when meeting described first switching condition, trigger handover module；

Handover module, for the triggering according to described second judge module, carries out the hand-off process of the wireless connections of described mobile terminal.

13. mobile terminals according to claim 12, it is characterised in that

Described first judge module includes:

First judges submodule, for judging whether the mobile step number carrying the user of described mobile terminal is more than the step number threshold value preset, and when described mobile step number is more than the step number threshold value preset, triggers first and determines submodule；

First determines submodule, and for according to the described first triggering judging submodule, the judged result obtained is for meeting described default switching condition.

14. mobile terminals according to claim 12, it is characterised in that described first judge module includes:

Second judges submodule, for judging whether the mobile step number carrying the user of described mobile terminal is more than the step number threshold value preset, and when described mobile step number is less than or equal to the step number threshold value preset, triggers the 3rd and judges submodule；

3rd judges submodule, for judging the triggering of submodule according to described second, judge that whether the signal intensity of described first WAP is less than or equal to the signal strength threshold preset, and when the signal intensity of described first WAP is less than or equal to the signal strength threshold preset, triggers second and determine submodule；

Second determines submodule, and for according to the described 3rd triggering judging submodule, the judged result obtained is for meeting described default switching condition.

15. mobile terminals according to claim 12, it is characterised in that described acquisition module includes:

First obtains submodule, for when meeting described default switching condition, the channel that the channel frequency of the WAP in the Preset Time the first log to prestoring is corresponding is scanned, obtain the performance indications of one or more WAPs that described mobile terminal had connected, in described first log, at least storage has the WAP that described mobile terminal had connected, and the channel frequency of this WAP.

16. mobile terminals as claimed in claim 15, it is characterised in that described first obtains submodule includes:

First computing unit, for the signal intensity of WAP connected according to described mobile terminal, is calculated the first fractional value of performance indications for characterizing the WAP that described mobile terminal had connected；

First query unit, for from the second log prestored, inquiry is for characterizing the user's the second fractional value connecting number of times to the WAP that described mobile terminal had connected, and the channel frequency of WAP that described mobile terminal had connected；

First acquiring unit, for the corresponding relation of the channel frequency according to the WAP prestored with fractional value, obtains threeth fractional value corresponding with the channel frequency of the WAP that described mobile terminal had connected；

Second computing unit, for calculating described first fractional value, described second fractional value and first and value of described 3rd fractional value；

Second acquisition unit, the performance indications of the WAP for described first and value had been connected as described mobile terminal.

17. mobile terminals as claimed in claim 16, it is characterised in that described first computing unit includes:

First computation subunit, for being calculated described first fractional value by formula y1=L1/ (1+exp (-k1* (rssi1-rssi2))), wherein, y1 represents described first fractional value, L1 represents the first preset fraction value, k1 represents first environment interference coefficient, and rssi1 represents the signal intensity of the WAP that described mobile terminal connected, and rssi2 represents the first preset signal strength value.

18. mobile terminals as claimed in claim 16, it is characterised in that described selection module includes:

First selects submodule, is used for the size of first and value of each WAP that relatively described mobile terminal had connected；

19. mobile terminals as claimed in claim 18, it is characterised in that described second judge module includes:

First calculating sub module, for according to the signal intensity of described first WAP, is calculated the 4th fractional value of performance indications for characterizing described first WAP；

First inquiry submodule, for from described second log, inquiry connects the 5th fractional value of number of times, and the channel frequency of described first WAP for characterizing user to described first WAP；

Second obtains submodule, for the corresponding relation of the channel frequency according to the WAP prestored with fractional value, obtains sixth fractional value corresponding with the channel frequency of described first WAP；

3rd obtains submodule, for the corresponding relation according to the connected mode prestored with fractional value, determine seventh fractional value corresponding with the connected mode of described mobile terminal described first WAP of connection, and calculating described 4th fractional value, described 5th fractional value, described 6th fractional value and second and value of described 7th fractional value, described connected mode includes manually connecting and being certainly dynamically connected；

4th judges submodule, be used for judging described mobile terminal after accessing described first WAP whether can with network-in-dialing, and if described mobile terminal can not then trigger the second calculating sub module with network-in-dialing after accessing described first WAP；

Second calculating sub module, for according to the described 4th triggering judging submodule, calculates the first difference between described second and value and the first preset value；

3rd calculating sub module, for calculating the second difference between first and value of described second WAP and described first difference, and judge that whether described second difference is more than zero, if and described second difference is more than zero, then trigger the 3rd and determine submodule, if and described second difference is less than or equal to zero, then triggers the 4th and determine submodule；

3rd determines submodule, and for the triggering according to described 3rd calculating sub module, the judged result obtained is for meeting described first switching condition；

4th determines submodule, and for the triggering according to described 3rd calculating sub module, the judged result obtained is for being unsatisfactory for described first switching condition.

20. mobile terminals as claimed in claim 19, it is characterised in that the described 4th judge submodule judge described mobile terminal access after described first WAP whether can with network-in-dialing after, described mobile terminal also includes:

Computing module, if for described mobile terminal energy and network-in-dialing after accessing described first WAP, then calculate the 3rd difference between first and value and described second and the value of described second WAP, and judge that whether described 3rd difference is more than zero, if and described 3rd difference is more than zero, then trigger and first determine module, and if described 3rd difference is less than or equal to zero, then trigger second and determine module；

First determines module, and for the triggering according to described computing module, the judged result obtained is for meeting described first switching condition；

Second determines module, and for the triggering according to described computing module, the judged result obtained is for being unsatisfactory for described first switching condition.

21. mobile terminals as claimed in claim 19, it is characterised in that described first calculating sub module includes:

3rd computing unit, for being calculated described 4th fractional value by formula y2=L2/ (1+exp (-k2* (rssi3-rssi4))), wherein, y2 represents described 4th fractional value, L2 represents the second preset fraction value, k2 represents second environment interference coefficient, and rssi3 represents the signal intensity of the first WAP, and rssi4 represents the second preset signal strength value.

22. mobile terminals as claimed in claim 12, it is characterised in that described handover module includes:

5th judges submodule, for the second WAP described in the key authentication by described second WAP prestored, and judge whether the IP log prestored exists the record information corresponding with the title of described second WAP, described record information at least includes MAC Address and the gateway ip address of the Dynamic Host Configuration Protocol server that the second WAP is corresponding, and if the IP log prestored exists the record information corresponding with the title of described second WAP, then trigger the first switching submodule, and if the IP log prestored does not exists the record information corresponding with the title of described second WAP, then trigger the second switching submodule；

First switching submodule, for according to the described 5th triggering judging submodule, giving the gateway ip address of described mobile terminal distribution, be allocated to described mobile terminal by the Dynamic Host Configuration Protocol server last time corresponding for described second WAP；

Second switching submodule, for according to the described 5th triggering judging submodule, receives Dynamic Host Configuration Protocol server corresponding to described second WAP currently to the gateway ip address of described mobile terminal distribution, and this gateway ip address is allocated to described mobile terminal.