CN105873181A - Method for scanning wireless roaming of terminal and corresponding terminal - Google Patents
Method for scanning wireless roaming of terminal and corresponding terminal Download PDFInfo
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- CN105873181A CN105873181A CN201510881973.5A CN201510881973A CN105873181A CN 105873181 A CN105873181 A CN 105873181A CN 201510881973 A CN201510881973 A CN 201510881973A CN 105873181 A CN105873181 A CN 105873181A
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- wlan
- scanning
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- terminal
- signal quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
Abstract
The invention discloses a method for scanning wireless roaming of a terminal and the corresponding terminal. The method comprises the following steps that the terminal detects a wireless local area network WLAN and obtains a detection result about WLAN data traffic or signal quality of an accessed WLAN access point; the terminal carries out scanning and shielding processing according to the detection result, if the detection result meets set shielding conditions, the terminal shields WLAN scanning. The terminal comprises a WLAN scanning module and a scanning control module, wherein the scanning control module is used for carrying out WLAN detection and scanning and shielding processing. According to the method for scanning wireless roaming of the terminal and the corresponding terminal, the frequency for interruption of wireless Internet access can be reduced and the user experience is promoted.
Description
Technical field
The present invention relates to radio network technique, particularly relate to a kind of terminal wireless roaming scan method and
Corresponding terminal.
Background technology
At present, people require more and more higher for network service, it is desirable to break different regions or visitor
The restriction of sight condition, it is possible to realize " anyone at any time Anywhere with anyone carry out appoint
The where communication of formula " purpose.Therefore, under the working environment of movement, provide to computer user
This service accessing information network resource just becomes the main application model of WLAN (such as WIFI)
One of enclosing, the most ambulant support just becomes the critically important aspect realizing WLAN.Wherein,
The main path that mobility support realizes relies on radio roaming exactly, i.e. exists multiple when network environment
WLAN access point (AP, Access Point), and their micro unit has mutually certain limit
Coincidence time, terminal (alternatively referred to as mobile station MT or work station Station) can be whole
Moving in WLAN coverage, the wireless network card of terminal automatically finds neighbouring signal intensity by scanning
Maximum AP, and by this AP transceiving data, keep continual network to connect.
In order to preferably be serviced, even if being switched to new AP, terminal needs to pass through periodic scanning
Keep in touch with neighbouring AP in time.When sending wireless scanning signal, owing to wireless channel switches,
The data communication of mobile phone will be affected.Such as, terminal when there being Frame to need to send in time, meeting
Wish continuously to take a certain channel to maximize handling capacity.Other channels scan and closes on
AP can cause wireless Internet access to interrupt.Current Android intelligent machine, such as red rice, Meizu, honor system
Row, when using real-time software such as sequence, big wisdom by WLAN online, it may appear that periodically
The phenomenon of card 1-2 second, affects Consumer's Experience.
Summary of the invention
For overcoming the periodicity card that brings of scanning to pause, the present invention provides below scheme:
The scan method of a kind of terminal wireless roaming, it is characterised in that including:
Terminal carries out WLAN WLAN detection, obtains WLAN data flow and/or is connect
Enter the testing result of the signal quality of WLAN access point；
Described terminal is scanned shielding processing according to described testing result, as described testing result meets
The shielding condition set, then shielding WLAN scanning.
Alternatively,
Described terminal is scanned shielding processing according to described testing result, also includes: such as described detection knot
When fruit is unsatisfactory for the shielding condition set, cancel the shielding to WLAN scanning.
Alternatively,
The shielding condition of described setting includes the one in following condition:
The signal quality of accessed WLAN access point exceedes the signal quality thresholding of setting；
WLAN data flow exceedes the traffic threshold of setting；
The signal quality of accessed WLAN access point exceedes the signal quality thresholding of setting, or WLAN
Data traffic exceedes the traffic threshold of setting；
The signal quality of accessed WLAN access point exceedes the signal quality thresholding of setting, and WLAN
Data traffic exceedes the traffic threshold of setting.
Alternatively,
The shielding WLAN scanning of described terminal, including:
The value of communication variables is set to represent the value of shielding WLAN scanning by described terminal；
Described terminal cancels the shielding to WLAN scanning, including:
The value of described communication variables is set to represent the value allowing WLAN scanning by described terminal；
Wherein, described communication variables is the communication variables used in WLAN scanning algorithm, described terminal
Value according to described communication variables determines whether to perform WLAN scanning.
Alternatively,
The signal quality of described accessed WLAN access point refers to the signal intensity of WLAN access point.
Alternatively,
Described scan method also includes:
Described terminal periodically carries out WLAN scanning according to the scan period set, in new scanning week
When phase arrives, if WLAN scanning is shielded, the most do not perform WLAN scanning, if WLAN sweeps
Retouch and do not shielded, then perform WLAN scanning；
Described terminal carries out described WLAN detection and scan screen according to the detection cycle set
Cover process, and the duration in described detection cycle is more than or equal to the duration of described scan period.
A kind of terminal, including WLAN WLAN scan module and scan control module, wherein:
Described WLAN scan module is for carrying out the WLAN scanning of radio roaming；
Described scan control module is used for carrying out WLAN detection and scanning shielding processing, including:
WLAN detector unit, is used for carrying out WLAN detection, obtain to WLAN data flow and/
Or the testing result of the signal quality of accessed WLAN access point；
Shielding processing unit, for being scanned shielding processing according to described testing result, such as described detection
Result meets the shielding condition of setting, then shielding WLAN scanning.
Alternatively,
Described shielding processing unit is scanned shielding processing according to described testing result, also includes: such as institute
When stating the shielding condition that testing result is unsatisfactory for setting, cancel the shielding to WLAN scanning.
Alternatively,
The shielding condition of described setting includes the one in following condition:
The signal quality of accessed WLAN access point exceedes the signal quality thresholding of setting；
WLAN data flow exceedes the traffic threshold of setting；
The signal quality of accessed WLAN access point exceedes the signal quality thresholding of setting, or WLAN
Data traffic exceedes the traffic threshold of setting；
The signal quality of accessed WLAN access point exceedes the signal quality thresholding of setting, and WLAN
Data traffic exceedes the traffic threshold of setting.
Alternatively,
The shielding WLAN scanning of described shielding processing unit, including: it is set to the value of communication variables represent screen
Cover the value of WLAN scanning；
Described shielding processing unit cancels the shielding to WLAN scanning, including: by described communication variables
Value is set to represent the value allowing WLAN scanning；
Wherein, described communication variables is the communication variables used in WLAN scanning algorithm, described
WLAN scan module determines whether to perform WLAN scanning according to the value of described communication variables.
Alternatively,
Described WLAN detector unit detects the signal quality of accessed WLAN access point, including: institute
State the signal intensity of WLAN detector unit detection WLAN access point.
Alternatively,
Described WLAN scan module carries out the WLAN scanning of radio roaming, including: described WLAN
Scan module periodically carries out WLAN scanning according to the scan period set, and arrives in the new scan period
When coming, if WLAN scanning is shielded, the most do not perform WLAN scanning, if WLAN scans not
Shielded, then performed WLAN scanning；
Described scan control module carries out WLAN detection and scanning shielding processing, including: described scanning control
Molding block carries out WLAN detection and scanning shielding processing, and institute according to the detection cycle set
State the duration duration more than or equal to the described scan period in detection cycle.
Such scheme can reduce the frequency interrupted of getting online without being tethered to a cable, and promotes Consumer's Experience.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below by right
In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it is clear that
Ground, the accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skill in the art
From the point of view of, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the flow chart of the scan method of embodiment of the present invention terminal wireless roaming；
Fig. 2 is the module map of embodiment of the present invention terminal；
Fig. 3 A is the flow chart that application example of the present invention detection is relevant with shielding processing；
Fig. 3 B is the flow chart that application example WLAN of the present invention scanning is relevant to shielding.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with this
Accompanying drawing in inventive embodiments, clearly and completely retouches the technical scheme in the embodiment of the present invention
State, it is clear that described embodiment is a part of embodiment of the present invention rather than whole embodiments.
Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, broadly falls into the scope of protection of the invention.
The scan method of the present embodiment terminal wireless roaming is as it is shown in figure 1, include:
Step 110, terminal carries out WLAN WLAN detection, obtains WLAN data stream
The testing result of the signal quality of amount and/or accessed WLAN access point；
In the present embodiment, i.e. obtain the testing result to WLAN data flow, obtain again being connect
Enter the testing result of the signal quality of WLAN access point.Need the parameter of detection according to the screen set
The condition of covering determines, if shielding condition pertains only to the WLAN data flow in the two parameter,
Only WLAN data flow can be detected, if shielding condition pertains only in the two parameter
The signal quality of WLAN access point, can only the signal quality of WLAN access point be examined
Survey.If shielding condition relates to the two parameter, then need the two parameter is detected.
Step 120, described terminal is scanned shielding processing according to described testing result, such as described inspection
Survey result and meet the shielding condition of setting, then shielding WLAN scanning.
In this step, the shielding condition that the present embodiment sets includes: the letter of accessed WLAN access point
Number quality exceedes the signal quality thresholding (referred to as signal quality condition) of setting, or WLAN data stream
Amount exceedes the traffic threshold (referred to as data traffic condition) of setting.In the application, in thresholding contrasts
" exceeding " of using can represent and be more than, it is also possible to represents and is more than or equal to.
In the present embodiment, the accessed WLAN access point of the signal quality of accessed WLAN access point
Signal strength expression.As a example by smart mobile phone, smart mobile phone wireless access a to WLAN connects
After access point, its scan procedure can detect current WLAN data flow and this WLAN access point
Signal intensity.If the signal intensity of this WLAN access point exceedes the signal strength threshold of setting,
Illustrate that current network signal quality is fine, now need not initiate WLAN scanning.And if WLAN
Data traffic exceedes the traffic threshold of setting, does not the most initiate WLAN scanning, in order to avoid affecting network number
According to transmission.
Although the present embodiment is meeting any one (bag of above-mentioned signal quality condition and data flow condition
Include the situation simultaneously meeting two conditions) time, all think and meet the shielding condition set, can be as far as possible
Avoid get online without being tethered to a cable interrupt generation, be particularly well-suited to terminal only have access specify AP scene such as family
The scene that front yard uses.But the present invention is not limited to this.Such as:
In another embodiment, the shielding condition of above-mentioned setting by: the signal of access WLAN access point
Quality exceedes the signal quality thresholding of setting.I.e., only in the case of meeting signal quality condition,
Shielding WLAN scanning.Use this shielding condition, can avoid to a certain extent getting online without being tethered to a cable and interrupt.
In another embodiment, the above-mentioned shielding condition set as: WLAN data flow exceedes setting
Traffic threshold.I.e., only in the case of meeting data traffic condition, just shielding WLAN scanning.Make
During by this shielding condition, can avoid to a certain extent getting online without being tethered to a cable and interrupt.Although current data flow
Time less, still occurring gets online without being tethered to a cable interrupts, but the use scene that relative data flow is bigger, user feels
Feel it is not clearly.
In another embodiment, the shielding condition of above-mentioned setting by: the signal of access WLAN access point
Quality exceedes the signal quality thresholding of setting, and WLAN data flow exceedes the traffic threshold of setting.That is,
In the case of meeting signal quality condition and data flow condition simultaneously, shielding WLAN scanning, it may have
Avoid the effect interrupted of getting online without being tethered to a cable.This shielding condition is the strictest relative to other embodiments, to WLAN
The impact of scanning is less, is more suited to radio roaming scene frequently.
In the step 120, described terminal is scanned shielding processing according to described testing result, it is also possible to
Including: when being unsatisfactory for, such as described testing result, the shielding condition set, cancel the shielding to WLAN scanning.
For the present embodiment, be accessed WLAN access point signal quality less than or equal to set signal
Quality threshold, and when WLAN data flow is less than or equal to the traffic threshold set, cancel WLAN
The shielding of scanning.It should be noted that this most non-with shielding condition of condition cancelling shielding is
That relation, can independently be configured.
In concrete operations, during the shielding WLAN scanning of described terminal, the value of communication variables can be set to
Represent the value of shielding WLAN scanning；When described terminal cancels the shielding to WLAN scanning, can be by
The value of described communication variables is set to represent the value allowing WLAN scanning；Described communication variables is at WLAN
The communication variables used in scanning algorithm (can be newly-increased communication variables, it is possible to use existing logical
Letter variable), described terminal determines whether to perform WLAN scanning according to the value of described communication variables.
The present embodiment method may also include that terminal periodically carries out WLAN according to the scan period set
Scanning, when the new scan period arrives, if WLAN scanning is shielded, does not the most perform WLAN
Scanning, if WLAN scanning is not shielded, then performs WLAN scanning；Terminal is according to setting simultaneously
Detection cycle ground carry out described WLAN detection and scanning shielding processing, and described detection cycle
Duration more than or equal to the duration of described scan period.Above-mentioned scanning can make with detection, shielding processing
Carry out with multiple threads, it is also possible to carry out in a thread.
Correspondingly, the present embodiment additionally provides a kind of terminal, as in figure 2 it is shown, include that WLAN scans
Module 10 and scan control module 20, wherein:
Described WLAN scan module 10 is for carrying out the WLAN scanning of radio roaming；
Described scan control module 20 is used for carrying out WLAN detection and scanning shielding processing, including:
WLAN detector unit 201, is used for carrying out WLAN detection, obtains WLAN data flow
And/or the testing result of the signal quality of accessed WLAN access point；
Shielding processing unit 203, for being scanned shielding processing according to described testing result, as described
Testing result meets the shielding condition of setting, then shielding WLAN scanning.
Alternatively,
Described shielding processing unit 203 is scanned shielding processing according to described testing result, also includes:
When being unsatisfactory for, such as described testing result, the shielding condition set, cancel the shielding to WLAN scanning.
Alternatively,
The shielding condition of described setting includes the one in following condition:
The signal quality of accessed WLAN access point exceedes the signal quality thresholding of setting；
WLAN data flow exceedes the traffic threshold of setting；
The signal quality of accessed WLAN access point exceedes the signal quality thresholding of setting, or WLAN
Data traffic exceedes the traffic threshold of setting；
The signal quality of accessed WLAN access point exceedes the signal quality thresholding of setting, and WLAN
Data traffic exceedes the traffic threshold of setting.
Alternatively,
Described shielding processing unit 203 shields WLAN scanning, including: the value of communication variables is set to table
Display screen covers the value of WLAN scanning；
Described shielding processing unit 203 cancels the shielding to WLAN scanning, including: described communication is become
The value of amount is set to represent the value allowing WLAN scanning；
Wherein, described communication variables is the communication variables used in WLAN scanning algorithm, described
WLAN scan module determines whether to perform WLAN scanning according to the value of described communication variables.
Alternatively,
Described WLAN detector unit 201 detects the signal quality of accessed WLAN access point, including:
The signal intensity of described WLAN detector unit detection WLAN access point.
Alternatively,
Described WLAN scan module 10 carries out the WLAN scanning of radio roaming, including: described WLAN
Scan module periodically carries out WLAN scanning according to the scan period set, and arrives in the new scan period
When coming, if WLAN scanning is shielded, the most do not perform WLAN scanning, if WLAN scans not
Shielded, then performed WLAN scanning；
Described scan control module 20 carry out WLAN detection and scanning shielding processing, including: described in sweep
Retouch control module and carry out WLAN detection and scanning shielding processing according to the detection cycle set,
And the duration in described detection cycle is more than or equal to the duration of described scan period.
The scan method of the present embodiment terminal wireless roaming and corresponding terminal, access according to WLAN
The signal quality of point and/or the testing result of WLAN data flow, shield WLAN scanning
Cover process (shield or cancel shielding), it is possible to reduce the wireless Internet access of terminal (such as smart mobile phone)
The frequency interrupted, thus the cycle card of surfing Internet of being prevented effectively from pauses, and improves Consumer's Experience.
Illustrate by the example in an application below.
The scan method of this application example radio roaming is calculated with the scanning of radio roaming in smart mobile phone
As a example by method.This smart scanning algorithm includes detection and shielding processing flow process, and scan process flow process.
As shown in Figure 3A, the related procedure of this example one-time detection and shielding processing includes:
The signal intensity of detection WLAN access point, it is judged that the signal of the WLAN access point of detection
Whether intensity exceedes the signal strength threshold of setting:
If it is, be set to communication variables A represent the value 1 forbidding scanning, terminate this time to process；
If it does not, whether detection WLAN data flow exceedes corresponding thresholding:
If it is, be set to communication variables A represent the value 1 forbidding scanning, terminate this time to process；
If it does not, please empty communication variables A and communication variables B, also will communication variables A and
Communication variables B is all set to allow the value 0 of scanning.
Above-mentioned signal strength threshold such as could be arranged to such as 60dmm, at current WLAN access point
Signal intensity more than or more than or equal to 60dmm time, communication variables A is set to expression and forbids sweeping
The value retouched such as 1, to shield the intermittent scanning of radio roaming.
Above-mentioned data traffic thresholding such as could be arranged to 2KByte/s, at current WLAN data flow
It is more than or more than or equal to 2KByte/s, is set to communication variables B represent the value such as 1 forbidding scanning,
To shield the intermittent scanning of radio roaming.
As long as above-mentioned flow process meet in signal strength conditions and data flow condition any one (include
Meet 2 conditions simultaneously) i.e. shield scanning, the judgement order of two conditions can change.
As shown in Figure 3 B, the flow process that the WLAN scanning of this application example is relevant to shielding includes:
The value of query communication variables A indicates whether to forbid scanning:
In this way, terminate this time to process；
As no, the value of query communication variable B indicates whether to forbid scanning:
In this way, terminate this time to process；
As no, initiate WLAN scanning.
In this application example, above-mentioned communication variables A and communication variables B is wireless unrestrained at smart mobile phone
Two communication variables newly-increased in the scanning algorithm of trip, only when the value of one-level Yu secondary communications variable
When all representing permission scanning, terminal is just initiated to carry out WLAN scanning.But this is merely exemplary,
One communication variables can also be only set.Or directly redirected by flow process or come real by the way of other
Existing shielding processing.
One of ordinary skill in the art will appreciate that: realize all or part of step of above-mentioned each method embodiment
Suddenly can be completed by the hardware that programmed instruction is relevant.Aforesaid program can be stored in a computer can
Read in storage medium.This program upon execution, performs to include the step of above-mentioned each method embodiment；And
Aforesaid storage medium includes: ROM, RAM, magnetic disc or CD etc. are various can store program code
Medium.
Device embodiment described above is only schematically, the list wherein illustrated as separating component
Unit can be or may not be physically separate, and the parts shown as unit can be or also
Can not be physical location, i.e. may be located at a place, or at least two network can also be distributed to
On unit.Some or all of module therein can be selected according to the actual needs to realize the present embodiment
The purpose of scheme.Those of ordinary skill in the art are not in the case of paying performing creative labour, the most permissible
Understand and implement.
Claims (12)
1. the scan method of a terminal wireless roaming, it is characterised in that including:
Terminal carries out WLAN WLAN detection, obtains WLAN data flow and/or is accessed
The testing result of the signal quality of WLAN access point；
Described terminal is scanned shielding processing according to described testing result, sets as described testing result meets
Fixed shielding condition, then shielding WLAN scanning.
2. scan method as claimed in claim 1, it is characterised in that:
Described terminal is scanned shielding processing according to described testing result, also includes: such as described detection knot
When fruit is unsatisfactory for the shielding condition set, cancel the shielding to WLAN scanning.
3. scan method as claimed in claim 1 or 2, it is characterised in that:
The shielding condition of described setting includes the one in following condition:
The signal quality of accessed WLAN access point exceedes the signal quality thresholding of setting；
WLAN data flow exceedes the traffic threshold of setting；
The signal quality of accessed WLAN access point exceedes the signal quality thresholding of setting, or WLAN
Data traffic exceedes the traffic threshold of setting；
The signal quality of accessed WLAN access point exceedes the signal quality thresholding of setting, and WLAN
Data traffic exceedes the traffic threshold of setting.
4. scan method as claimed in claim 2, it is characterised in that:
The shielding WLAN scanning of described terminal, including:
The value of communication variables is set to represent the value of shielding WLAN scanning by described terminal；
Described terminal cancels the shielding to WLAN scanning, including:
The value of described communication variables is set to represent the value allowing WLAN scanning by described terminal；
Wherein, described communication variables is the communication variables used in WLAN scanning algorithm, described terminal
Value according to described communication variables determines whether to perform WLAN scanning.
5. scan method as claimed in claim 1, it is characterised in that:
The signal quality of described accessed WLAN access point refers to the signal intensity of WLAN access point.
6. the scan method as described in claim 1 or 2 or 4 or 5, it is characterised in that:
Described scan method also includes:
Described terminal periodically carries out WLAN scanning according to the scan period set, in new scanning week
When phase arrives, if WLAN scanning is shielded, the most do not perform WLAN scanning, if WLAN sweeps
Retouch and do not shielded, then perform WLAN scanning；
Described terminal carries out described WLAN detection and scan screen according to the detection cycle set
Cover process, and the duration in described detection cycle is more than or equal to the duration of described scan period.
7. a terminal, including WLAN WLAN scan module, it is characterised in that also include
Scan control module, wherein:
Described WLAN scan module is for carrying out the WLAN scanning of radio roaming；
Described scan control module is used for carrying out WLAN detection and scanning shielding processing, including:
WLAN detector unit, is used for carrying out WLAN detection, obtain to WLAN data flow and/
Or the testing result of the signal quality of accessed WLAN access point；
Shielding processing unit, for being scanned shielding processing according to described testing result, such as described detection
Result meets the shielding condition of setting, then shielding WLAN scanning.
8. terminal as claimed in claim 7, it is characterised in that:
Described shielding processing unit is scanned shielding processing according to described testing result, also includes: such as institute
When stating the shielding condition that testing result is unsatisfactory for setting, cancel the shielding to WLAN scanning.
9. terminal as claimed in claim 7 or 8, it is characterised in that:
The shielding condition of described setting includes the one in following condition:
The signal quality of accessed WLAN access point exceedes the signal quality thresholding of setting；
WLAN data flow exceedes the traffic threshold of setting；
The signal quality of accessed WLAN access point exceedes the signal quality thresholding of setting, or WLAN
Data traffic exceedes the traffic threshold of setting；
The signal quality of accessed WLAN access point exceedes the signal quality thresholding of setting, and WLAN
Data traffic exceedes the traffic threshold of setting.
10. terminal as claimed in claim 8, it is characterised in that:
The shielding WLAN scanning of described shielding processing unit, including: it is set to the value of communication variables represent screen
Cover the value of WLAN scanning；
Described shielding processing unit cancels the shielding to WLAN scanning, including: by described communication variables
Value is set to represent the value allowing WLAN scanning；
Wherein, described communication variables is the communication variables used in WLAN scanning algorithm, described
WLAN scan module determines whether to perform WLAN scanning according to the value of described communication variables.
11. terminals as claimed in claim 7, it is characterised in that:
Described WLAN detector unit detects the signal quality of accessed WLAN access point, including: institute
State the signal intensity of WLAN detector unit detection WLAN access point.
12. terminals as described in claim 7 or 8 or 10 or 11, it is characterised in that:
Described WLAN scan module carries out the WLAN scanning of radio roaming, including: described WLAN
Scan module periodically carries out WLAN scanning according to the scan period set, and arrives in the new scan period
When coming, if WLAN scanning is shielded, the most do not perform WLAN scanning, if WLAN scans not
Shielded, then performed WLAN scanning；
Described scan control module carries out WLAN detection and scanning shielding processing, including: described scanning control
Molding block carries out WLAN detection and scanning shielding processing, and institute according to the detection cycle set
State the duration duration more than or equal to the described scan period in detection cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510881973.5A CN105873181A (en) | 2015-12-03 | 2015-12-03 | Method for scanning wireless roaming of terminal and corresponding terminal |
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| CN201510881973.5A CN105873181A (en) | 2015-12-03 | 2015-12-03 | Method for scanning wireless roaming of terminal and corresponding terminal |
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| CN105873181A true CN105873181A (en) | 2016-08-17 |
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| CN110213733A (en) * | 2019-05-23 | 2019-09-06 | 武汉金牛经济发展有限公司 | A kind of electromagnetism hot-melt welding machine internet of things system |
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