CN107046699A - A kind of wireless terminal roaming method and device - Google Patents
A kind of wireless terminal roaming method and device Download PDFInfo
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- CN107046699A CN107046699A CN201710289683.0A CN201710289683A CN107046699A CN 107046699 A CN107046699 A CN 107046699A CN 201710289683 A CN201710289683 A CN 201710289683A CN 107046699 A CN107046699 A CN 107046699A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/005—Discovery of network devices, e.g. terminals
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The present invention provides a kind of wireless terminal roaming method and device, and methods described is applied to wireless terminal, and methods described includes：When wireless terminal roaming, access point AP scannings are carried out by the first radio-frequency module of the wireless terminal；New associated AP is determined according to the AP scanned AP information；Disconnected, and be connected by second radio-frequency module with the new associated AP foundation with the AP that the wireless terminal is currently associated by the second radio-frequency module of the wireless terminal.Therefore the present invention can make the second radio-frequency module provide continual data connection service, and effectively collect by the first radio-frequency module the AP information of surrounding, so as to so that wireless terminal roaming is to optimal AP.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of wireless terminal roaming method and device.
Background technology
WIFI (Wireless-Fidelity, Wireless Fidelity) application is increasingly popularized, such as office, smart city.
Some special industries, such as medical treatment, subway, also have a strong demand to WIFI applications, but they have one it is common will
Ask, that is, require that mobile WIFI equipment ensure that seamless roam, meanwhile, in seamless roam, it ensure that bandwidth is not less than
Minimum bandwidth requirement.
In the existing wireless terminal with injection frequency module, injection frequency module is connected to AP with WIFI clients
On (Access Point, access point).Because injection frequency module is in order to guarantee always to be to switch to nearest AP, it is necessary to ceaselessly
There is which AP around scanning, and these AP deployment is on a different channel, so injection frequency module needs to leave the letter that it works
Road.This just brings two problems, and one is of short duration business pause, and service bandwidth is reduced on the whole；Two be injection frequency mould
The time that block is scanned on each channel is very short, it is impossible to the AP information around effectively collecting, and causes on the non-optimal AP that can roam,
Cause Consumer's Experience poor.
The content of the invention
In view of this, the present invention provides a kind of wireless terminal roaming method and device, to improve roaming quality, and then improves
Consumer's Experience.
Specifically, the present invention is achieved through the following technical solutions：
The present invention provides a kind of wireless terminal roaming method, and methods described is applied to wireless terminal, and methods described includes：
When wireless terminal roaming, access point AP scannings are carried out by the first radio-frequency module of the wireless terminal；
New associated AP is determined according to the AP scanned AP information；
Disconnected, and led to the AP that the wireless terminal is currently associated by the second radio-frequency module of the wireless terminal
Second radio-frequency module is crossed to be connected with the new associated AP foundation.
Further, AP scannings are carried out by the first radio-frequency module of the wireless terminal, specifically included：
AP is carried out to each channel on the working frequency range of first radio-frequency module by first radio-frequency module
Scanning.
Further, AP scannings are carried out by the first radio-frequency module of the wireless terminal, specifically included：
AP is carried out to each channel on the working frequency range of first radio-frequency module by first radio-frequency module
Scanning；
Methods described also includes：
When first radio-frequency module is different with the working frequency range of second radio-frequency module, pass through second radio frequency
Module carries out AP scannings to each channel on the working frequency range of second radio-frequency module；
Wherein, the scan frequency of first radio-frequency module is higher than the scan frequency of second radio-frequency module.
Further, new associated AP is determined according to the AP scanned AP information, specifically included：
According to the 2nd AP information scanned by second radio-frequency module, scanned from by first radio-frequency module
To the first AP information in determine the corresponding AP of the 2nd AP information the first AP information, be used as effective AP information；
New associated AP is selected according to effective AP information.
Further, the 2nd AP information that the basis is scanned by second radio-frequency module, from passing through described
The corresponding AP of the 2nd AP information the first AP information is determined in the first AP information that one radio-frequency module is scanned, specific bag
Include：
In the first AP information scanned by first radio-frequency module, search carry the first BSSID with it is described
The 2nd BSSID that 2nd AP information is carried meets the first AP information of preparatory condition；
The first AP information found is defined as to the corresponding AP of the 2nd AP information the first AP information.
Based on identical design, the present invention also provides a kind of wireless terminal roaming device, and described device is applied to wireless whole
End, described device includes：
First radio-frequency module, for when wireless terminal roaming, being scanned to access point AP；
Determining module, the AP information of the AP for being scanned according to first radio-frequency module determines new associated AP；
Second radio-frequency module, it is current with the wireless terminal for being determined in the determining unit after new associated AP
The AP of association is disconnected, and is connected with the new associated AP foundation.
Further, first radio-frequency module, specifically for every on the working frequency range to first radio-frequency module
One channel carries out AP scannings.
Further, first radio-frequency module, specifically for every on the working frequency range to first radio-frequency module
One channel carries out AP scannings；
Second radio-frequency module, is additionally operable to determine that first radio-frequency module and described second is penetrated in the wireless terminal
When the working frequency range of frequency module is different, AP scannings are carried out to each channel on the working frequency range of second radio-frequency module；
Wherein, the scan frequency of first radio-frequency module is higher than the scan frequency of second radio-frequency module.
Further, the determining module, including：
First determination sub-module, for the 2nd AP information scanned according to second radio-frequency module, from described first
The corresponding AP of the 2nd AP information the first AP information is determined in the first AP information that radio-frequency module is scanned, effective AP is used as
Information；
Second determination sub-module, for selecting new associated AP according to effective AP information.
Further, first determination sub-module, specifically for the first AP scanned in first radio-frequency module
In information, search the first BSSID of carrying and the 2nd BSSID of the 2nd AP information carrying meets the first AP of preparatory condition
Information；The first AP information found is defined as to the corresponding AP of the 2nd AP information the first AP information.
As can be seen here, when the present invention can work as wireless terminal roaming, entered by the first radio-frequency module of the wireless terminal
Row access point AP is scanned；New associated AP is determined according to the AP scanned AP information；Penetrated by the second of the wireless terminal
The AP that frequency module is currently associated with the wireless terminal is disconnected, and is associated by second radio-frequency module with described new
AP sets up connection.Because the present invention can make the second radio-frequency module provide continual data connection service, and pass through first
Radio-frequency module effectively collects the AP information of surrounding, so as to so that wireless terminal roaming is to optimal AP, improve roaming quality, enter
And improve Consumer's Experience.
Brief description of the drawings
Fig. 1 is a kind of process chart of wireless terminal roaming method in a kind of illustrative embodiments of the invention；
Fig. 2 is the wireless terminal roaming networking schematic diagram in a kind of illustrative embodiments of the invention；
The hardware configuration of wireless terminal where wireless terminal roaming device in a kind of illustrative embodiments of Fig. 3 present invention
Figure；
A kind of building-block of logic of wireless terminal roaming device in a kind of illustrative embodiments of Fig. 4 present invention.
Embodiment
In order to solve the problem of prior art is present, the present invention provides a kind of wireless terminal roaming method and device, can be with
When wireless terminal roaming, access point AP scannings are carried out by the first radio-frequency module of the wireless terminal；According to what is scanned
AP AP information determines new associated AP；Currently associated with the wireless terminal by the second radio-frequency module of the wireless terminal
AP disconnect, and set up and be connected with the new associated AP by second radio-frequency module.Because the present invention can make
Second radio-frequency module provides continual data connection service, and the AP for effectively collecting surrounding by the first radio-frequency module believes
Breath, so as to so that wireless terminal roaming is to optimal AP, improve roaming quality, and then improve Consumer's Experience.
Fig. 1 is refer to, is a kind of processing stream of wireless terminal roaming method in a kind of illustrative embodiments of the invention
Cheng Tu, methods described is applied to wireless terminal, and wireless terminal of the invention includes the first radio-frequency module and the second radio-frequency module, its
In the second radio-frequency module be used for AP set up be connected, the first radio-frequency module be used for persistently scanning surrounding AP AP information, the AP
Can be common AP or MESH AP.Methods described includes：
Step 101, when wireless terminal roaming, access point AP is carried out by the first radio-frequency module of the wireless terminal and swept
Retouch；
In the present embodiment, in initialization, the working frequency range of two radio-frequency modules of wireless terminal can be matched somebody with somebody
Put, specifically, network environment can be presently according to wireless terminal and selects corresponding working frequency range, if for example, current net
During AP only one of which radio-frequency modules in network, then by two radio-frequency modules of wireless terminal, the radio-frequency module with AP is each configured to
Identical working frequency range；If the AP in current network has two radio-frequency modules and different working frequency range, by wireless terminal
Two radio-frequency modules are respectively configured as identical working frequency range corresponding with AP two radio-frequency modules.It is wireless whole after the completion of configuration
End can control the second radio-frequency module to be attached according to the radio-frequency module of configured working frequency range and current AP, in foundation
Capable, descending data channel.
In the present embodiment, no matter wireless terminal the first radio-frequency module and the second radio-frequency module working frequency range whether phase
Together, wireless terminal can be believed each on the working frequency range of first radio-frequency module by first radio-frequency module
Road carries out AP scannings, obtains AP information.Because the first radio-frequency module is served only for AP scannings, therefore the second radio-frequency module can be ensured
Connection with AP will not be interrupted.
In the preferred embodiment of the invention, wireless terminal of the invention can also work as first radio-frequency module and described
When the working frequency range of second radio-frequency module is different, pass through working frequency range of second radio-frequency module to second radio-frequency module
On each channel carry out AP scannings；Wherein, the scan frequency of first radio-frequency module is higher than second radio-frequency module
Scan frequency.In the prior art, during the trigger condition (such as signal intensity is less than threshold value) that injection frequency module is roamed in satisfaction,
AP scannings are carried out, the service disconnection of injection frequency module is easily caused.Compared to prior art, the present invention can make the second radio frequency mould
Block only does periodic AP scannings, such as every 10 seconds run-downs, the AP information for obtaining surrounding；First radio-frequency module one
Straight row AP scannings (its scan frequency is much larger than the scan frequency of the second radio-frequency module), obtain AP information, so that wireless terminal
New associated AP is selected according to the AP information that the first radio-frequency module and the second radio-frequency module are scanned.
Step 102, new associated AP determined according to the AP scanned AP information；
When it is determined that needing roaming, wireless terminal can according to AP scan AP information, such as signal intensity, with end
The data such as the distance at end select optimal AP as the new associated AP of this wireless terminal roaming, so as to realize wireless terminal
Seamless roam, and can ensure that wireless terminal can roam into optimal AP.
As one embodiment, no matter whether the working frequency range of AP two radio-frequency modules is identical, wireless terminal can be only
New associated AP is determined according to the AP information that the first radio-frequency module is scanned, specific determination process is prior art, herein no longer
It is described in detail.
As another embodiment, when AP has two different radio-frequency modules of working frequency range, i.e. the of wireless terminal
When the working frequency range of one radio-frequency module and the second radio-frequency module is different, two radio-frequency modules of wireless terminal can be respectively with respective
Scan frequency scans AP information, and the AP information that such as the first radio-frequency module is scanned is referred to as the first AP information, the second radio-frequency module
The AP information scanned is referred to as the 2nd AP information.Wireless terminal can be according to second scanned by second radio-frequency module
AP information, determines the corresponding AP's of the 2nd AP information from the first AP information scanned by first radio-frequency module
First AP information, is used as effective AP information；New associated AP is selected further according to effective AP information.If a certain first AP information is
Effective AP information, then illustrate that the corresponding AP of the first AP information two radio-frequency modules can be with normal work.Penetrate due to second
Frequency module scan frequency will be significantly lower than the frequency of the first radio-frequency module, the AP information that the first radio-frequency module is scanned in roaming
It is inaccurate, it is therefore desirable to which the AP information for scanning the first radio-frequency module is used as the Main Basiss for determining new associated AP.Therefore
The present invention can be performed by two radio-frequency modules respectively by the work that will be scanned and connect, and improve the accuracy of scanning, and
Reduce the scanning times of the second radio frequency, it is to avoid the problem of service disconnection occur.
In optional embodiment of the present invention, wireless terminal can be in first scanned by first radio-frequency module
In AP information, the first BSSID (Basic Service Set Identifier, basic service set identification) carried and institute are searched
The 2nd BSSID for stating the carrying of the 2nd AP information meets the first AP information of preparatory condition；So as to by the first AP information found
It is defined as the corresponding AP of the 2nd AP information the first AP information, it may also be said to which bright first AP information and the 2nd AP information are same
One AP AP information.
Specifically, AP information generally includes the information such as BSSID and signal intensity, and BSSID can be in the form of MAC Address
Present, because the corresponding base address of AP two radio-frequency modules is different, the first radio-frequency module of wireless terminal and the second radio frequency mould
Block can scan same AP corresponding first frequency range and the BSSID of the second frequency range radio frequency respectively.Due to belonging to the of same AP
One BSSID and the 2nd BSSID meet certain predetermined condition, therefore wireless terminal can obtain first included in the first AP information
BSSID, obtains the 2nd BSSID included in the 2nd AP information, then searches the first BSSID and the 2nd AP information of carrying
The 2nd BSSID carried meets the first AP information of the preparatory condition, is used as effective AP information.
For example, it is assumed that the first radio-frequency module is the frequency for scanning SSID name for the 2.4G of wangfu wireless network
Section, scanning to 3 BSSID, value is respectively 0e00fc-000d02,0e00fc-00ac02,0e00fc-000903；By except
After being rounded with 16, it is 0e00fc-000d00,0e00fc-00ac00,0e00fc-000900 respectively to obtain corresponding base address.The
The SSID name of two radio-frequency modules scanning is the 5G of wangfu wireless network frequency range, has also scanned 3 BSSID, value point
Wei not 0e00fc-000d11,0e00fc-00ac11,0e00fc-000912；By divided by 16 round after, obtain corresponding base
Location is 0e00fc-000d10,0e00fc-00ac10,0e00fc-000910 respectively.According to producer AP the second radio-frequency module
Corresponding relation (the radio frequency of such as base address of the second radio-frequency module than first of base address and the base address of first radio-frequency module
The base address of module is high 16), then can determine that 0e00fc-000d00 is corresponding with 0e00fc-000d10,0e00fc-00ac00
Corresponding with 0e00fc-00ac10,0e00fc-000900 is corresponding with 0e00fc-000910.Thus may determine that 0e00fc-
000d02 and 0e00fc-000d11 are the AP information for belonging to same AP, and 0e00fc-00ac02 and 0e00fc-00ac11 are to belong to
Same AP AP information, 0e00fc-000903 and 0e00fc-000912 are the AP information for belonging to same AP.Then it is considered that
3 BSSID that one radio-frequency module is scanned, value is respectively 0e00fc-000d02,0e00fc-00ac02,0e00fc-000903
Corresponding AP information is effective AP information.
Because the AP with two radio-frequency modules can meet user's greater demand, such as 2.4G can preferably penetrate barrier
Hinder, and 5G signal attenuation can more accurate feedback AP apart from terminal distance, therefore the present invention wireless terminal can pass through
Two radio-frequency modules corresponding with AP are set, and making the applicability of the wireless terminal strengthens, application scenarios more enrich.
Step 103, the second radio-frequency module by the wireless terminal disconnect with the AP that the wireless terminal is currently associated
Connection, and be connected by second radio-frequency module with the new associated AP foundation.
It is determined that after new associated AP, when wireless terminal roaming can by the second radio-frequency module of the wireless terminal with
The AP that the wireless terminal is currently associated is disconnected, and sets up company with the new associated AP by second radio-frequency module
Connect.
Can set up WIFI connections or build when the second radio-frequency module is set up with AP to be connected as one embodiment
Vertical wireless mesh (Mesh) connection.
As can be seen here, the present invention can make the second radio-frequency module provide continual data connection service, and pass through the
One radio-frequency module effectively collects the AP information of surrounding, so as to so that wireless terminal roaming is to optimal AP, improve roaming quality,
And then improve Consumer's Experience.
For the objects, technical solutions and advantages of the present invention are more clearly understood, with reference to Fig. 2 to the solution of the present invention
It is described in further detail.
Refer to Fig. 2, be in wireless terminal roaming networking schematic diagram in the embodiment of the present invention, the present embodiment wireless terminal with
Illustrated exemplified by WIFI terminal.The network include WIFI terminal and AP1, AP2, AP3 for being distributed in diverse location and
AP4, wherein, the WIFI terminal has the first radio-frequency module and the second radio-frequency module, wherein the first radio-frequency module is used to scan AP
Information, the second radio-frequency module, which is used to set up with AP, to be connected.
Situation one：
If the AP in the networking is respectively provided with injection frequency module, WIFI terminal can be by the first radio-frequency module and the second radio frequency
The working frequency range of module is set to the injection frequency module identical working frequency range with the AP.
Assuming that the AP that WIFI terminal is currently connected is AP1, then the radio frequency mould that the second radio-frequency module of WIFI terminal can be with AP1
Block sets up connection, and the first radio-frequency module can scan the AP information of surrounding, so that AP1, AP2, AP3 and AP4 AP information are obtained,
Now AP1 is the AP nearest apart from WIFI terminal；When WIFI terminal is moved to position A ' from position A, roaming conditions are triggered,
Then the first radio-frequency module obtains AP1, AP2, AP3 and AP4 information, then according to this again by the AP information around scanning
A little AP information compare the new associated AP that an optimal AP is roamed as the WIFI terminal.If for example, according to WIFI terminal with
AP distance selects optimal AP, then when WIFI terminal is located at position A ', WIFI terminal can be according to the first radio-frequency module
The AP of collection information calculates WIFI terminal and AP distance, after comparing, it is found that AP3 is nearest apart from WIFI terminal, because
This new associated AP that can roam AP3 as the WIFI terminal, WIFI terminal is disconnected with AP1's by the second radio-frequency module
Connection, sets up with AP3 and is connected.
Situation two：
If the AP in the networking is respectively provided with two different radio-frequency modules of working frequency range, working frequency range be respectively 2.4G and
5G, then WIFI terminal the working frequency range of the first radio-frequency module and the second radio-frequency module can be respectively set to 2.4G and 5G.
Assuming that the AP that WIFI terminal is currently connected is AP1, then the second radio-frequency module of WIFI terminal can be penetrated with AP1 work
Frequency module sets up connection, and the first radio-frequency module can scan AP information constantly on 2.4G each channel, thus obtain AP1,
AP2, AP3 and AP4 the first AP information, respectively AP1-1, AP2-1, AP3-1 and AP4-1；Second radio-frequency module was every ten seconds
AP information is scanned on 5G each channel, it is assumed that AP4 the second radio-frequency module breaks down, therefore the second radio-frequency module can only
Obtain AP1, AP2 and AP3 the 2nd AP information, respectively AP1-2, AP2-2 and AP3-2；When WIFI terminal is moved to from position A
During the A ' of position, roaming conditions are triggered, WIFI terminal obtains the first radio-frequency module and the first AP letters of the second radio-frequency module scanning
Breath and the 2nd AP information, then therefrom select effective AP information.Specifically, because AP1-1 has corresponding AP1-2, AP2-1
There is corresponding AP2-2, AP3-1 has corresponding AP3-2, and only AP4-1 does not have corresponding 2nd AP information, it is thus determined that
AP1-1, AP2-1 and AP3-1 are effective AP information, and WIFI terminal can compare an optimal AP according to these effective AP information
The new associated AP roamed as the WIFI terminal.If for example, selecting optimal AP according to WIFI terminal and AP distance, then
When WIFI terminal is located at position A ', the information for the AP that WIFI terminal can be collected according to the first radio-frequency module calculates WIFI ends
End and AP distance, after comparing, it is found that AP3 is nearest apart from WIFI terminal, therefore can be overflow AP3 as the WIFI terminal
The new associated AP of trip, WIFI terminal disconnects the connection with AP1 by the second radio-frequency module, sets up and is connected with AP3.
Based on identical design, the present invention also provides a kind of wireless terminal roaming device, and the device can be real by software
It is existing, it can also be realized by way of hardware or software and hardware combining.Exemplified by implemented in software, wireless terminal roaming of the invention
Device, as the device on a logical meaning, is that be can be achieved by the CPU of wireless terminal where it by corresponding in memory
The computer program instructions of above-mentioned wireless terminal roaming method run after reading and formed.
Fig. 3 is refer to, is a kind of wireless terminal roaming device 400 in a kind of illustrative embodiments of the invention, it is described
Device is applied to wireless terminal, and the basic running environment of the device includes CPU, memory and other hardware, from logic level
From the point of view of, the logical construction of the device 400 as shown in figure 4, including：
First radio-frequency module 401, for when wireless terminal roaming, being scanned to access point AP；
Determining module 402, the AP information of the AP for being scanned according to first radio-frequency module determines new associated AP；
Second radio-frequency module 403, for being determined in the determining unit after new associated AP, works as with the wireless terminal
The AP of preceding association is disconnected, and is connected with the new associated AP foundation.
Optionally, first radio-frequency module 401, specifically for every on the working frequency range to first radio-frequency module
One channel carries out AP scannings.
Optionally, first radio-frequency module 401, specifically for every on the working frequency range to first radio-frequency module
One channel carries out AP scannings；
Second radio-frequency module 403, is additionally operable to determine first radio-frequency module and described in the wireless terminal
When the working frequency range of two radio-frequency modules is different, AP is carried out to each channel on the working frequency range of second radio-frequency module and swept
Retouch；
Wherein, the scan frequency of first radio-frequency module is higher than the scan frequency of second radio-frequency module.
Optionally, the determining module 402, including：
First determination sub-module 4021, for the 2nd AP information scanned according to second radio-frequency module, from described
The corresponding AP of the 2nd AP information the first AP information is determined in the first AP information that first radio-frequency module is scanned, as having
Imitate AP information；
Second determination sub-module 4022, for selecting new associated AP according to effective AP information.
Optionally, first determination sub-module 4021, specifically for scanned in first radio-frequency module first
In AP information, search the first BSSID carried and the 2nd BSSID of the 2nd AP information carrying meets the first of preparatory condition
AP information；The first AP information found is defined as to the corresponding AP of the 2nd AP information the first AP information.
As can be seen here, when the present invention can work as wireless terminal roaming, entered by the first radio-frequency module of the wireless terminal
Row access point AP is scanned；New associated AP is determined according to the AP scanned AP information；Penetrated by the second of the wireless terminal
The AP that frequency module is currently associated with the wireless terminal is disconnected, and is associated by second radio-frequency module with described new
AP sets up connection.Because the present invention can make the second radio-frequency module provide continual data connection service, and pass through first
Radio-frequency module effectively collects the AP information of surrounding, so as to so that wireless terminal roaming is to optimal AP, improve roaming quality, enter
And improve Consumer's Experience.
The function of unit and the implementation process of effect specifically refer to correspondence step in the above method in said apparatus
Implementation process, will not be repeated here.
For device embodiment, because it corresponds essentially to embodiment of the method, so related part is real referring to method
Apply the part explanation of example.Device embodiment described above is only schematical, wherein described be used as separating component
The unit of explanation can be or may not be physically separate, and the part shown as unit can be or can also
It is not physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Can be according to reality
Selection some or all of module therein is needed to realize the purpose of application scheme.Those of ordinary skill in the art are not paying
In the case of going out creative work, you can to understand and implement.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements done etc. should be included within the scope of protection of the invention.
Claims (10)
1. a kind of wireless terminal roaming method, it is characterised in that methods described is applied to wireless terminal, methods described includes：
When wireless terminal roaming, access point AP scannings are carried out by the first radio-frequency module of the wireless terminal；
New associated AP is determined according to the AP scanned AP information；
Disconnected by the second radio-frequency module of the wireless terminal with the AP that the wireless terminal is currently associated, and pass through institute
The second radio-frequency module is stated to be connected with the new associated AP foundation.
2. according to the method described in claim 1, it is characterised in that AP is carried out by the first radio-frequency module of the wireless terminal
Scanning, is specifically included：
AP scannings are carried out to each channel on the working frequency range of first radio-frequency module by first radio-frequency module.
3. according to the method described in claim 1, it is characterised in that AP is carried out by the first radio-frequency module of the wireless terminal
Scanning, is specifically included：
AP scannings are carried out to each channel on the working frequency range of first radio-frequency module by first radio-frequency module；
Methods described also includes：
When first radio-frequency module is different with the working frequency range of second radio-frequency module, pass through second radio-frequency module
AP scannings are carried out to each channel on the working frequency range of second radio-frequency module；
Wherein, the scan frequency of first radio-frequency module is higher than the scan frequency of second radio-frequency module.
4. method according to claim 3, it is characterised in that new association is determined according to the AP scanned AP information
AP, is specifically included：
According to the 2nd AP information scanned by second radio-frequency module, from what is scanned by first radio-frequency module
The corresponding AP of the 2nd AP information the first AP information is determined in first AP information, effective AP information is used as；
New associated AP is selected according to effective AP information.
5. method according to claim 4, it is characterised in that the basis is scanned by second radio-frequency module
2nd AP information, determines that the 2nd AP information is corresponding from the first AP information scanned by first radio-frequency module
AP the first AP information, is specifically included：
In the first AP information scanned by first radio-frequency module, the first BSSID and described second carried is searched
The 2nd BSSID that AP information is carried meets the first AP information of preparatory condition；
The first AP information found is defined as to the corresponding AP of the 2nd AP information the first AP information.
6. a kind of wireless terminal roaming device, it is characterised in that described device is applied to wireless terminal, described device includes：
First radio-frequency module, for when wireless terminal roaming, being scanned to access point AP；
Determining module, the AP information of the AP for being scanned according to first radio-frequency module determines new associated AP；
Second radio-frequency module, for being determined in the determining unit after new associated AP, is currently associated with the wireless terminal
AP disconnect, and set up and be connected with the new associated AP.
7. device according to claim 6, it is characterised in that
First radio-frequency module, AP is carried out specifically for each channel on the working frequency range to first radio-frequency module
Scanning.
8. device according to claim 6, it is characterised in that
First radio-frequency module, AP is carried out specifically for each channel on the working frequency range to first radio-frequency module
Scanning；
Second radio-frequency module, is additionally operable to determine first radio-frequency module and the second radio frequency mould in the wireless terminal
When the working frequency range of block is different, AP scannings are carried out to each channel on the working frequency range of second radio-frequency module；
Wherein, the scan frequency of first radio-frequency module is higher than the scan frequency of second radio-frequency module.
9. device according to claim 8, it is characterised in that the determining module, including：
First determination sub-module, for the 2nd AP information scanned according to second radio-frequency module, from first radio frequency
Module scans to the first AP information in determine the corresponding AP of the 2nd AP information the first AP information, be used as effective AP letters
Breath；
Second determination sub-module, for selecting new associated AP according to effective AP information.
10. device according to claim 9, it is characterised in that
First determination sub-module, specifically in the first AP information that first radio-frequency module is scanned, lookup is taken
The 2nd BSSID that first BSSID of band is carried with the 2nd AP information meets the first AP information of preparatory condition；It will find
The first AP information be defined as the corresponding AP of the 2nd AP information the first AP information.
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