CN107820303B - Mobile terminal wireless local area network scanning method and device and computer equipment - Google Patents

Mobile terminal wireless local area network scanning method and device and computer equipment Download PDF

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Publication number
CN107820303B
CN107820303B CN201711332692.XA CN201711332692A CN107820303B CN 107820303 B CN107820303 B CN 107820303B CN 201711332692 A CN201711332692 A CN 201711332692A CN 107820303 B CN107820303 B CN 107820303B
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mobile terminal
wireless access
scanning
local area
area network
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CN107820303A (en
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肖龙
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0245—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal according to signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application relates to a mobile terminal wireless local area network scanning method, a device and computer equipment. The mobile terminal wireless local area network scanning method comprises the following steps: determining whether an available wireless access point exists in the current position of the mobile terminal; when available wireless access points exist and the mobile terminal accesses the available wireless access points, network information of the accessed target available wireless access points is obtained; the method comprises the steps that the scanning mode of a current mobile terminal is determined according to network information of a target available wireless access point so as to scan the wireless local area network, the scanning mode comprises active scanning and passive scanning, and the mobile terminal can automatically determine and match the corresponding scanning mode to scan so as to search the wireless local area network, wherein when the passive scanning mode is adopted, the power consumption can be saved, the cruising ability can be improved, the radiation can be reduced, and the user experience cannot be influenced; when an active scanning mode is adopted, the user requirements can be met to the maximum extent, and the network fluency is ensured.

Description

Mobile terminal wireless local area network scanning method and device and computer equipment
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for scanning a wireless local area network of a mobile terminal, a computer device, and a computer-readable storage medium.
Background
A Wireless Local Network (WLAN) refers to a Local area Network formed by replacing a traditional wired transmission medium with a Wireless channel. A mobile terminal (STA) adopts a Wireless Fidelity (Wi-Fi) technology to establish connection with an Access Point (AP) so as to Access a Wireless local area network. Specifically, a Wi-Fi module is built in the mobile terminal, and in order to access a wireless local area network, the mobile terminal first needs to scan to find whether an available wireless local area network exists nearby, and the scanning mode is divided into two types: active scanning and passive scanning. Wherein, the mobile terminal must first obtain the relevant information of the available access points through the scanning mechanism. No matter where the user goes out for shopping, working, traveling and the like, the available access points are obtained through the same scanning mode, and the problems of high power consumption and short endurance time exist in the scanning process.
Disclosure of Invention
The embodiment of the application provides a mobile terminal wireless local area network scanning method, a mobile terminal wireless local area network scanning device, a computer device and a computer readable storage medium, which can save power consumption and improve cruising ability.
A control method of a wireless local area network switch comprises the following steps:
determining whether an available wireless access point exists in the current position of the mobile terminal;
when available wireless access points exist and the mobile terminal accesses the available wireless access points, network information of the accessed target available wireless access points is obtained;
and determining a scanning mode of the current mobile terminal according to the network information of the target available wireless access point so as to scan the wireless local area network, wherein the scanning mode comprises active scanning and passive scanning.
A mobile terminal wireless local area network scanning device comprises:
the mobile terminal comprises a determining module, a judging module and a judging module, wherein the determining module is used for determining whether an available wireless access point exists in the current position of the mobile terminal;
the mobile terminal comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring network information of available wireless access points when the available wireless access points exist and the mobile terminal accesses the available wireless access points;
and the scanning control module determines the current scanning mode of the mobile terminal according to the network information of the target available wireless access point so as to scan the wireless local area network, wherein the scanning mode comprises active scanning and passive scanning.
A computer device comprises a memory and a processor, wherein the memory stores computer readable instructions, and the instructions, when executed by the processor, cause the processor to execute the steps of the wireless local area network scanning method of the mobile terminal.
A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the above-mentioned mobile terminal wireless local area network scanning method.
According to the mobile terminal wireless local area network scanning method, the mobile terminal wireless local area network scanning device, the mobile terminal and the computer readable storage medium, when the available wireless access point exists and the mobile terminal is accessed to the target available wireless access point, the mobile terminal can automatically determine and match the corresponding scanning mode according to the network information of the target available wireless access point to scan so as to search for the wireless local area network, wherein when a passive scanning mode is adopted, the power consumption can be saved, the cruising ability can be improved, the radiation can be reduced, and the user experience cannot be influenced; when an active scanning mode is adopted, the user requirements can be met to the maximum extent, and the network fluency is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a diagram illustrating an exemplary embodiment of a wireless local area network scanning method for a mobile terminal;
FIG. 2 is a flowchart illustrating a WLAN scanning method of a mobile terminal according to an embodiment;
fig. 3 is a schematic flowchart illustrating an embodiment of determining a current scanning mode of the mobile terminal according to the network information of the target available wireless access point to scan a wireless local area network;
FIG. 4 is a flowchart illustrating an embodiment of scanning for WLANs using active scanning;
fig. 5 is a schematic flowchart illustrating a scan mode of the mobile terminal to scan the wlan according to the network information of the target available wireless access point in another embodiment;
fig. 6 is a schematic flowchart illustrating another embodiment of determining a current scanning mode of the mobile terminal according to the network information of the target available wireless access point to scan a wireless local area network;
FIG. 7 is a flowchart illustrating a WLAN scanning method of a mobile terminal according to another embodiment;
fig. 8 is a block diagram of a control device for a wlan scanning method of a mobile terminal according to an embodiment;
fig. 9 is a block diagram of a partial structure of a mobile phone related to a computer device provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Fig. 1 is a schematic diagram of an operating environment of a wlan scanning method for a mobile terminal according to an embodiment. The working environment relates to various application scenarios, for example, including Universal Mobile Telecommunications System (UMTS), Long Term Evolution (LTE), Global System for Mobile communications (GSM), WLAN, and the like. By way of non-limiting example, the following description relates to a WLAN communication system, but such teachings are equally applicable to other types of systems. As shown in fig. 1, the operating environment thereof relates to a mobile terminal 100, a cloud server 101, a base station 102 and a wireless Access Point (AP) 103, the mobile terminal 100 and the base station 102 can communicate with each other, each base station 102 can communicate with the cloud server 101, the mobile terminal 100 can also communicate with the cloud server 101 through a related network other than the base station 102, and the mobile terminal 100 can also communicate with the wireless Access device 103 to establish a wireless network connection. Further, in a wireless communication system, the base station 102 receives reverse link signals from the mobile terminals 100. The mobile terminal 100 is generally engaged in conversations, messaging, and other types of communications. The base station 102 processes each received reverse link signal and transmits the processed signal to the mobile terminal 100 in the form of a forward link signal. Optionally, the communication channel division manner adopted in the communication process includes, but is not limited to, Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), and Code Division Multiple Access (CDMA).
As shown in fig. 2, in an embodiment, a wlan scanning method for a mobile terminal is provided, which is applied to a mobile terminal with a mobile communication function, and the embodiment is exemplified by applying the wlan scanning method to the mobile terminal 100 in the operating environment of fig. 1. The control method of the wireless local area network switch specifically comprises the following steps:
step 202: it is determined whether there are available wireless access points for the current location of the mobile terminal.
An Access Point (AP) may be understood as a wireless local area network that a mobile terminal has successfully accessed to the AP, for example, an available AP for home use, an available AP for work, an available AP for frequent Access, or an available AP for other public areas, and so on. The preset database stores device information of a plurality of available wireless access points, wherein the device information may include Service Set Identifiers (SSIDs), MAC addresses, channels used, radio frequencies, coverage areas of the available wireless access points, location information of the available wireless access points, and the like, and the device information of each available wireless access point is stored in the preset database in a one-to-one correspondence manner.
The current position information of the mobile terminal can be acquired through a GPS positioning technology, a Beidou positioning technology or a base station positioning technology, but the embodiment of the application is not limited to the method, and the current position information of the mobile terminal can be acquired in other modes.
According to the obtained current position information of the mobile terminal, matching screening can be carried out in a preset database, and whether the position information of the available wireless access point matched with the current position information of the mobile terminal exists or not can be judged. If the current position of the mobile terminal exists, it can be determined that an available wireless access point exists in the current position of the mobile terminal, and if the current position of the mobile terminal does not exist, it can be determined that an available wireless access point does not exist in the current position of the mobile terminal.
It should be noted that the identification may be a name defined by a user, or may be a model of the wireless available access device, that is, the identification may be represented by a combination of letters, numbers, special symbols, and the like.
Step 204: when available wireless access points exist and the mobile terminal accesses the available wireless access points, network information of accessed target available wireless access points is obtained.
When the current position of the mobile terminal has available wireless access points and the mobile terminal accesses any one of the available wireless access points, the mobile terminal can acquire the network information of the accessed available wireless access point, wherein the available wireless access point which is currently accessed by the mobile terminal is a target available wireless access point.
The network information at least includes a Received Signal Strength Indication (RSSI) of the wireless local area network provided by the mobile terminal receiving the available wireless access point, which may be referred to as a Received Signal Strength Indication, and is an optional part of the wireless transmission layer for determining the link quality and whether to increase the broadcast transmission Strength. The received signal strength indication RSSI is typically negative, with larger values indicating better link quality and smaller values indicating worse link quality.
Step 206: and determining the current scanning mode of the mobile terminal according to the network information of the target available wireless access point so as to scan the wireless local area network.
When the mobile terminal is connected with the target available wireless access point, the scanning mode matched with the network information of the current target available wireless access point can be selected according to the network information of the target available wireless access point to scan the wireless local area network. Because the received signal strength indication in the network information can be used for evaluating the communication quality of a communication link, when the communication quality is good, the requirement of a user on the real-time performance of other available wireless access points is not high, at the moment, a passive scanning mode can be adopted to save power consumption, when the communication quality is poor, the user urgently needs to quickly switch to other wireless access points with better communication quality, at the moment, an active scanning mode can be adopted to meet the user requirement to the maximum extent, and the fluency of the network is ensured.
The scanning mode comprises active scanning and passive scanning. It should be noted that, for the passive scanning mode, the mobile terminal does not actively transmit a probe request frame, but passively receives a Beacon frame (Beacon) periodically transmitted by the wireless access point to discover the network. The beacon frame includes information such as a service set identifier of the wireless access point AP, a support rate, an MAC address of the wireless access point, a supported authentication method, an encryption algorithm, a beacon frame transmission interval, and a used channel. For example, the default period for the wireless access point to transmit the beacon frame is 100ms, i.e., the wireless access point broadcasts and transmits the beacon frame every 100 ms. STAs learn about the presence of a wireless network by listening to beacon frames on each of the channels they support. It should be noted that, for the active scanning mode, the mobile terminal may actively transmit the detection signals in turn on the channels supported by the mobile terminal, so as to detect the wireless networks existing around the mobile terminal. The Probe signal transmitted by the mobile terminal is called a Probe Request frame (Probe Request), and the network signal is acquired by receiving a Probe Response frame (Probe Response). The probe request frame may be divided into two types, one type is an unspecified Service Set Identifier (SSID), and the other type is an assigned SSID. If the service set identifier is not specified in the probe request frame, it means that the probe request wants to acquire all the surrounding wireless network signals that can be acquired, and all the wireless access points that receive the broadcast probe request frame respond to the mobile terminal. If the service set identifier is specified in the probe request frame, it means that the mobile terminal only wants to find the specific service set identifier, and does not need other wireless networks except the specified service set identifier. After receiving the probe request frame, the wireless access point will respond to the mobile terminal only when finding that the service set identifier in the probe request frame is the same as the service set identifier of the wireless access point.
According to the mobile terminal wireless local area network scanning method, when the available wireless access point exists and the mobile terminal is accessed to the target available wireless access point, the mobile terminal can automatically determine and match the corresponding scanning mode according to the network information of the target available wireless access point to scan so as to search the wireless local area network, wherein when a passive scanning mode is adopted, the power consumption can be saved, the cruising ability can be improved, the radiation can be reduced, and the user experience cannot be influenced; when an active scanning mode is adopted, the user requirements can be met to the maximum extent, and the network fluency is ensured.
As shown in fig. 3, in an embodiment, determining a current scanning mode of the mobile terminal to scan a wireless local area network according to the network information of the target available wireless access point includes:
step 302: and detecting the received signal strength of the wireless local area network provided by the available wireless access point of the target.
When the mobile terminal accesses the target available wireless access point, the mobile terminal can detect the received signal strength indication RSSI in real time, that is, the signal strength of the wireless local area network provided by the target available wireless access point received by the mobile terminal, and can judge the communication quality of a communication link formed between the current mobile terminal and the target available wireless access point in real time according to the obtained signal strength.
Step 304: and judging the signal intensity and the size of a preset signal threshold.
The preset signal threshold may be understood as a threshold for accessing an available wireless access point, and the size of the preset signal threshold may be set according to actual requirements, and is not further limited herein.
And comparing the acquired received signal strength indication RSSI with a preset signal threshold, and selecting a proper scanning mode to scan the wireless local area network according to the comparison result.
Step 306: and when the signal intensity is greater than or equal to the preset signal threshold, scanning the wireless local area network in a passive scanning mode.
When the mobile terminal is accessed into the target available wireless access point, when the received signal intensity of the wireless local area network is greater than or equal to the preset signal threshold value, the communication quality of a communication link between the mobile terminal and the target available wireless access point is better, at the moment, the mobile terminal has low requirements on other available wireless access points, at the moment, the default active scanning mode can be switched to the passive scanning mode, so that the power consumption is saved, the standby time is prolonged, meanwhile, the radiation is reduced, and the experience degree of a user cannot be influenced.
Step 308: and when the signal value is smaller than the preset signal threshold value, scanning the wireless local area network in an active scanning mode.
When the mobile terminal is accessed to the target available wireless access point, and the received signal strength of the wireless local area network is smaller than the preset signal threshold, it indicates that the communication quality of the communication link between the mobile terminal and the target available wireless access point is poor, and if the mobile terminal is still accessed to the target available wireless access point, the fluency of the user on the internet is affected, and the user experience is affected, so that the mobile terminal needs to be switched to be accessed to the adjacent available wireless access equipment with higher signal strength. At this time, the active scanning mode can be adopted to scan the wireless local area networks adjacent to the available wireless access points, and the scanning mode of the active scanning can help the user to quickly search the wireless local area networks adjacent to the available wireless access points, so that the network searching experience of the user is improved.
Further, in an embodiment, the scanning for the wlan in an active scanning manner includes:
step 402: channel information of neighboring available wireless access points is acquired.
A neighboring available wireless access point may be understood as an available wireless access point other than the target available wireless access point. The Channel is a usually called "frequency band (Channel)" of a radio, and is a data signal transmission Channel using a radio signal as a transmission medium. The common IEEE802.11 b/g works in the 2.4-2.4835 GHz frequency band, and the frequency bands are divided into 11 or 13 channels. When there are more than two wireless access points in the wireless local area network signal coverage of the wireless access point, different frequency bands need to be set for each wireless access point to avoid the collision of the common channels. When the current position of the terminal has a plurality of adjacent available wireless access points, the channel information of each adjacent available wireless access point can be acquired, that is, the working frequency band information of each adjacent available wireless access point can be acquired.
Step 404: and actively scanning non-overlapping transmission channels in the channel information.
The wireless protocols are all defined by the IEEE (institute of electrical and electronic engineers) standards, and the three wireless standards IEEE802.11b, IEEE802.11g, and IEEE802.11a identified by the IEEE are different in the number of channels. The wireless standards IEEE802.11b and IEEE802.11g work in the frequency band of 2.4-2.4835 GHz, the standards of various regions of various countries are different, and the frequency bands are divided into 11 or 13 channels. The North America/FCC standard adopts 2.412-2.462 GHz and has 11 channels in total, wherein the 1, 6 and 11 channels are non-overlapping transmission channel channels; the European/ETSI standard adopts 2.412-2.472 GHz and has 13 channels in total, wherein the channels 1, 6 and 13 are non-overlapping transmission channels.
If the channel information of the neighboring available wireless access point includes channels 1, 4, and 6, the channel 1, or channel 6 may be scanned actively, and if the neighboring available wireless access point is scanned on the channel 1 or channel 6, the scanned neighboring available wireless access point is connected. If no neighboring available wireless access points are scanned on channel 1 or channel 6, step 406 is executed: and when the current adjacent available wireless access point is not scanned on the non-overlapping transmission channel, actively scanning the remaining overlapping channels in the channel information.
That is, when no available wireless access point is scanned on channel 1 or channel 6, the remaining overlapping channel (channel 4) in the channel information is actively scanned to acquire a neighboring available wireless access point.
Further, within the preset time, if the channels of all the neighboring available wireless access points are scanned and still a certain neighboring available wireless access point is not successfully accessed, active scanning may be performed on channels other than the channels used by all the neighboring available wireless access points to obtain the neighboring available wireless access points.
In one embodiment, after determining the signal strength and the magnitude of the preset signal threshold, the method further includes:
step 502: and acquiring the duration of the signal intensity which is greater than or equal to the preset signal threshold.
When the mobile terminal accesses the available wireless access point and the received signal intensity of the wireless local area network provided by the wireless access point is greater than the preset signal threshold, the mobile terminal starts timing and obtains the duration of the received signal intensity of the wireless local area network provided by the wireless access point, which is greater than the preset signal threshold.
Step 504: and when the duration is longer than a first preset duration, scanning the wireless local area network in a passive scanning mode.
When the mobile terminal is accessed to the available wireless access point, when an object or a person is blocked between the mobile terminal and the accessed available wireless access point, the communication quality of a communication link formed between the mobile terminal and the accessed available wireless access point is influenced, if the influence caused by the factors such as the blocking is only an instant and the duration of the influence is less than a first preset duration, the active scanning is not required to be switched into the passive scanning, only if the duration of the influence is more than the first preset duration, the communication quality of the wireless local area network communication link between the current mobile terminal and the available wireless access point is really considered to be improved, at the moment, the active scanning is switched into the passive scanning to scan the wireless local area network, and thus the ping-pong effect can be avoided "
In one embodiment, after determining the signal strength and the magnitude of the preset signal threshold, the method further includes:
step 602: and acquiring the duration of the signal intensity smaller than the preset signal threshold.
Step 604: and when the duration is longer than a second preset duration, scanning the wireless local area network in an active scanning mode.
When the mobile terminal accesses the available wireless access point, and the duration of the received signal intensity of the available wireless local area network, which is smaller than the preset signal threshold, is longer than the second preset duration, the communication quality of the wireless local area network communication link between the current mobile terminal and the available wireless access point is considered to be deteriorated, and the scanning mode can be switched from passive scanning to active scanning so as to quickly search the available wireless local area network.
Further, in order to ensure that the user can search for other wireless available access points in time, the first preset time duration is usually longer than the second preset time duration.
In one embodiment, before the mobile terminal accesses the available wireless access point, the method further includes:
step 702: and when the current position of the mobile terminal has a plurality of available wireless access points, acquiring network information of the available wireless access points.
And acquiring available wireless access points matched with the current position information in a preset database according to the acquired current position of the mobile terminal. Wherein, the number of the available wireless access points can be 1, 2 or more. Meanwhile, the mobile terminal can acquire the network information of each available wireless access point in real time, wherein the network information comprises the received strength information and stability information of the wireless local area network provided by each available wireless access point.
Step 704: and determining the target available wireless access point according to the network information for accessing to a wireless local area network.
The mobile terminal can determine the target available wireless access point according to the strength information and the stability information in the acquired network information so as to prepare for accessing to the wireless local area network of the target available wireless access point.
Specifically, the mobile terminal may use an available wireless access point corresponding to the wireless local area network with the strongest strength information in the network information as the target available wireless access point; the available wireless access point corresponding to the wireless local area network with the strongest stability in the network information can also be used as the target available wireless access point; and weighting factors of the strength information and the stability information can be set according to requirements, and the strength information and the stability information are comprehensively considered to determine the target available wireless access point.
In one embodiment, the method further comprises the step of scanning the wireless local area network in a passive scanning mode when no available wireless access point exists in the current position of the mobile terminal.
According to the current position information of the mobile terminal, whether the available wireless access point exists in the current position of the mobile terminal or not can be known, and when the available wireless access point does not exist in the current position of the mobile terminal, if the mobile terminal still adopts an active scanning mode, the power consumption of the mobile terminal can be increased, and the radiation to a user can also be increased. At this time, the active scanning mode can be switched to the passive scanning mode or the passive scanning mode can be maintained, so as to save power consumption, increase standby time and reduce radiation. In one embodiment, the method further comprises the step of determining the scanning frequency of the scanning mode according to the network information of the target available wireless access point.
Further, when the received signal strength of the wireless local area network provided by the target available wireless access point is greater than a preset signal threshold, the active scanning is switched to the passive scanning to scan the wireless local area network, and meanwhile, the scanning frequency of the passive scanning is reduced to increase the scanning period, so that the power consumption is saved.
Further, when the received signal strength of the wireless local area network provided by the target available wireless access point is smaller than a preset signal threshold, the passive scanning is switched to the active scanning to scan the wireless local area network, and meanwhile, the scanning frequency of the active scanning is increased to reduce the scanning period, so that the available wireless local area network is scanned more quickly, and the user experience is improved.
In one embodiment, the method for scanning the wireless local area network of the mobile terminal further comprises the step of switching the active scanning mode into the passive scanning mode when the wireless local area network is accessed by adopting the active scanning mode.
That is, when the mobile terminal scans a nearby accessible wireless local area network through an active scanning mode and accesses the wireless local area network, the active scanning mode currently used by the mobile terminal may be switched to a passive scanning mode. When the mobile terminal is connected with the network access equipment, the real-time requirement of the user on searching other network access equipment is not high, and at the moment, the active scanning mode is switched into the passive scanning mode, so that the power consumption can be saved, the endurance time is increased, and the radiation is reduced.
As shown in fig. 8, in one embodiment, there is provided a mobile terminal wireless local area network scanning apparatus, including:
a determining module 810 for determining whether there is an available wireless access point in the current location of the mobile terminal;
an obtaining module 820, configured to, when there is an available wireless access point and the mobile terminal accesses the available wireless access point, obtain network information of an accessed target available wireless access point;
a scanning control module 830, configured to determine, according to the network information of the target available wireless access point, a scanning manner in which the mobile terminal scans a wireless local area network currently to scan the wireless local area network, where the scanning manner includes active scanning and passive scanning.
In the mobile terminal wireless local area network scanning device, the scanning control module 830 can automatically determine and match a corresponding scanning mode to scan for a wireless local area network according to the network information of the target available wireless access point when the mobile terminal accesses the target available wireless access point, wherein when a passive scanning mode is adopted, the power consumption can be saved, the cruising ability can be improved, the radiation can be reduced, and the user experience cannot be influenced; when an active scanning mode is adopted, the user requirements can be met to the maximum extent, and the network fluency is ensured.
In one embodiment, a scan control module includes:
a detecting unit, configured to detect a received signal strength of a wireless local area network provided by the target available wireless access point;
the judging unit is used for judging the signal intensity and the size of a preset signal threshold;
the control unit is used for scanning the wireless local area network in a passive scanning mode when the signal intensity is greater than or equal to the preset signal threshold; and when the signal value is smaller than the preset signal threshold value, scanning the wireless local area network by adopting an active scanning mode.
In one embodiment, the scan control module further comprises:
a scanning unit, configured to acquire channel information of neighboring available wireless access points; actively scanning non-overlapping transmission channels in the channel information; and when the current available wireless access point is not scanned on the non-overlapping transmission channel, actively scanning the remaining overlapping channels in the channel information.
In one embodiment, the scan control module further comprises:
the duration acquisition unit is used for acquiring the duration of the signal intensity which is greater than or equal to the preset signal threshold value and acquiring the duration of the signal intensity which is less than the preset signal threshold value;
the scanning unit is further used for scanning the wireless local area network in a passive scanning mode when the duration is longer than a first preset duration; and when the duration is longer than a second preset duration, scanning the wireless local area network by adopting an active scanning mode.
In one embodiment, the mobile terminal wireless local area network scanning device further comprises:
an obtaining module, configured to obtain network information of a plurality of available wireless access points when the plurality of available wireless access points exist in the current location of the mobile terminal;
and the access module is used for determining the target available wireless access point according to the network information for accessing to a wireless local area network.
In an embodiment, the scanning control module is further configured to scan a wireless local area network in a passive scanning manner when there is no available wireless access point in the current location of the mobile terminal.
In one embodiment, the mobile terminal wireless local area network scanning device further comprises:
and the frequency control module is used for determining the scanning frequency of the scanning mode according to the network information of the target available wireless access point.
The division of each module in the aforementioned mobile terminal wlan scanning apparatus is only for illustration, in other embodiments, the mobile terminal wlan scanning apparatus may be divided into different modules as required to complete all or part of the functions of the aforementioned mobile terminal wlan scanning apparatus.
The embodiment of the application also provides a computer readable storage medium. One or more non-transitory computer-readable storage media embodying computer-executable instructions that, when executed by one or more processors, cause the processors to perform the steps of:
determining whether an available wireless access point exists in the current position of the mobile terminal;
when available wireless access points exist and the mobile terminal accesses the available wireless access points, network information of the accessed target available wireless access points is obtained;
and determining a scanning mode of the current mobile terminal according to the network information of the target available wireless access point so as to scan the wireless local area network, wherein the scanning mode comprises active scanning and passive scanning.
When the computer program (instructions) in the computer-readable storage medium is executed, when the mobile terminal accesses the target available wireless access point, the mobile terminal can automatically determine and match a corresponding scanning mode according to the network information of the target available wireless access point to scan for a wireless local area network, wherein when a passive scanning mode is adopted, the power consumption can be saved, the cruising ability can be improved, the radiation can be reduced, and the user experience cannot be influenced; when an active scanning mode is adopted, the user requirements can be met to the maximum extent, and the network fluency is ensured.
The embodiment of the application also provides a computer program product. A computer program product containing instructions which, when run on a computer, cause the computer to perform the method of controlling a wireless local area network switch described in the embodiments above.
Fig. 9 is a block diagram of a partial structure of a mobile phone related to a mobile terminal according to an embodiment of the present application. Referring to fig. 9, the handset includes: radio Frequency (RF) circuitry 99, memory 920, input unit 930, display unit 940, sensor 950, audio circuitry 960, wireless fidelity (WiFi) module 970, processor 980, and power supply 990. Those skilled in the art will appreciate that the handset configuration shown in fig. 9 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
The RF circuit 910 may be used for receiving and transmitting signals during information transmission or communication, and may receive downlink information of a base station and then process the downlink information to the processor 980; the uplink data may also be transmitted to the base station. Typically, the RF circuitry includes, but is not limited to, an antenna, at least one Amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuit 910 may also communicate with networks and other devices via wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to Global System for mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE)), e-mail, Short Messaging Service (SMS), and the like.
The memory 920 may be used to store software programs and modules, and the processor 980 may execute various functional applications and data processing of the mobile phone by operating the software programs and modules stored in the memory 920. The memory 920 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function (such as an application program for a sound playing function, an application program for an image playing function, and the like), and the like; the data storage area may store data (such as audio data, an address book, etc.) created according to the use of the mobile phone, and the like. Further, the memory 920 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The input unit 930 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the cellular phone 900. Specifically, the input unit 930 may include a touch panel 931 and other input devices 932. The touch panel 931, which may also be referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 931 (e.g., a user operating the touch panel 931 or near the touch panel 931 by using a finger, a stylus, or any other suitable object or accessory), and drive the corresponding connection device according to a preset program. In one embodiment, the touch panel 931 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 980, and can receive and execute commands sent by the processor 980. In addition, the touch panel 931 may be implemented by various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The input unit 930 may include other input devices 932 in addition to the touch panel 931. In particular, other input devices 932 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), and the like.
The display unit 940 may be used to display information input by the user or information provided to the user and various menus of the mobile phone. The display unit 940 may include a display panel 941. In one embodiment, the Display panel 941 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like. In one embodiment, the touch panel 931 may overlay the display panel 941, and when the touch panel 931 detects a touch operation thereon or nearby, the touch operation is transmitted to the processor 980 to determine the type of touch event, and then the processor 980 provides a corresponding visual output on the display panel 941 according to the type of touch event. Although in fig. 9, the touch panel 931 and the display panel 941 are two independent components to implement the input and output functions of the mobile phone, in some embodiments, the touch panel 931 and the display panel 941 may be integrated to implement the input and output functions of the mobile phone.
Cell phone 900 may also include at least one sensor 950, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor that adjusts the brightness of the display panel 941 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 941 and/or backlight when the mobile phone is moved to the ear. The motion sensor can comprise an acceleration sensor, the acceleration sensor can detect the magnitude of acceleration in each direction, the magnitude and the direction of gravity can be detected when the mobile phone is static, and the motion sensor can be used for identifying the application of the gesture of the mobile phone (such as horizontal and vertical screen switching), the vibration identification related functions (such as pedometer and knocking) and the like; the mobile phone may be provided with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor.
Audio circuitry 960, speaker 961 and microphone 962 may provide an audio interface between a user and a cell phone. The audio circuit 960 may transmit the electrical signal converted from the received audio data to the speaker 961, and convert the electrical signal into a sound signal for output by the speaker 961; on the other hand, the microphone 962 converts the collected sound signal into an electrical signal, converts the electrical signal into audio data after being received by the audio circuit 960, and then outputs the audio data to the processor 980 for processing, and then the audio data can be transmitted to another mobile phone through the RF circuit 910, or the audio data can be output to the memory 920 for subsequent processing.
WiFi belongs to short-distance wireless transmission technology, and the mobile phone can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 970, and provides wireless broadband Internet access for the user. Although fig. 9 shows WiFi module 970, it is to be understood that it does not belong to the essential components of cell phone 900 and may be omitted as desired.
The processor 980 is a control center of the mobile phone, connects various parts of the entire mobile phone by using various interfaces and lines, and performs various functions of the mobile phone and processes data by operating or executing software programs and/or modules stored in the memory 920 and calling data stored in the memory 920, thereby integrally monitoring the mobile phone. In one embodiment, processor 980 may include one or more processing units. In one embodiment, the processor 980 may integrate an application processor and a modem processor, wherein the application processor primarily handles operating systems, user interfaces, applications, and the like; the modem processor handles primarily wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 980.
The handset 900 also includes a power supply 990 (e.g., a battery) for supplying power to various components, which may preferably be logically connected to the processor 980 via a power management system, such that the power management system may be used to manage charging, discharging, and power consumption.
In one embodiment, the cell phone 900 may also include a camera, a bluetooth module, and the like.
In an embodiment of the present application, the processor 980 included in the mobile terminal implements the following steps when executing the computer program stored on the memory:
determining whether an available wireless access point exists in the current position of the mobile terminal;
when available wireless access points exist and the mobile terminal accesses the available wireless access points, network information of the accessed target available wireless access points is obtained;
and determining a scanning mode of the current mobile terminal according to the network information of the target available wireless access point so as to scan the wireless local area network, wherein the scanning mode comprises active scanning and passive scanning.
When the processor 980 included in the mobile terminal executes a computer program stored on a memory, when the mobile terminal accesses a target available wireless access point, the mobile terminal can automatically determine and match a corresponding scanning mode according to network information of the target available wireless access point to scan for a wireless local area network, wherein when a passive scanning mode is adopted, power consumption can be saved, cruising ability can be improved, radiation can be reduced, and user experience cannot be influenced; when an active scanning mode is adopted, the user requirements can be met to the maximum extent, and the network fluency is ensured.
Embodiments of the present application also provide a computer program product containing instructions, which when run on a computer, cause the computer to perform the following steps:
determining whether an available wireless access point exists in the current position of the mobile terminal;
when available wireless access points exist and the mobile terminal accesses the available wireless access points, network information of the accessed target available wireless access points is obtained;
and determining a scanning mode of the current mobile terminal according to the network information of the target available wireless access point so as to scan the wireless local area network, wherein the scanning mode comprises active scanning and passive scanning.
When the mobile terminal is accessed to the target available wireless access point, the mobile terminal can automatically determine and match a corresponding scanning mode according to network information of the target available wireless access point to scan for a wireless local area network, wherein when a passive scanning mode is adopted, power consumption can be saved, cruising ability can be improved, radiation can be reduced, and user experience cannot be influenced; when an active scanning mode is adopted, the user requirements can be met to the maximum extent, and the network fluency is ensured.
Any reference to memory, storage, database, or other medium used herein may include non-volatile and/or volatile memory. Suitable non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synchronous Link (Synchlink) DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and bus dynamic RAM (RDRAM).
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (9)

1. A method for scanning a wireless local area network of a mobile terminal is characterized by comprising the following steps:
determining whether an available wireless access point exists in the current position of the mobile terminal;
when available wireless access points exist and the mobile terminal accesses the available wireless access points, network information of the accessed target available wireless access points is obtained; the network information comprises the signal strength of a wireless local area network provided by the target available wireless access point received by the mobile terminal;
determining a scanning mode of the current mobile terminal according to the network information of the target available wireless access point so as to scan the wireless local area network, wherein the scanning mode comprises active scanning and passive scanning;
the determining, according to the network information of the target available wireless access point, a scanning mode in which the mobile terminal scans for the wireless local area network so as to scan for the wireless local area network includes:
detecting the received signal strength of a wireless local area network provided by the target available wireless access point;
judging the signal intensity and the size of a preset signal threshold;
when the signal intensity is greater than or equal to the preset signal threshold, scanning the wireless local area network in a passive scanning mode;
and when the signal intensity is smaller than the preset signal threshold, scanning the wireless local area network by adopting an active scanning mode.
2. The method of claim 1, wherein the scanning for the wlan using active scanning comprises:
acquiring channel information of adjacent available wireless access points;
actively scanning non-overlapping transmission channels in the channel information;
and when the current available wireless access point is not scanned on the non-overlapping transmission channel, actively scanning the remaining overlapping channels in the channel information.
3. The method of claim 1, further comprising:
acquiring the duration of the signal intensity which is greater than or equal to the preset signal threshold;
when the duration is longer than a first preset duration, scanning the wireless local area network in a passive scanning mode; or the like, or, alternatively,
acquiring the duration of the signal intensity which is smaller than the preset signal threshold;
and when the duration is longer than a second preset duration, scanning the wireless local area network in an active scanning mode.
4. The method according to claim 1, further comprising, before the mobile terminal accesses the available wireless access point:
when the current position of the mobile terminal has a plurality of available wireless access points, network information of the available wireless access points is obtained;
and determining the target available wireless access point according to the network information for accessing to a wireless local area network.
5. The method of claim 1, further comprising:
and scanning the wireless local area network in a passive scanning mode when the current position of the mobile terminal does not have the available wireless access point.
6. The method of claim 1, further comprising:
and determining the scanning frequency of the scanning mode according to the network information of the target available wireless access point.
7. A mobile terminal wireless local area network scanning device is characterized by comprising:
the mobile terminal comprises a determining module, a judging module and a judging module, wherein the determining module is used for determining whether an available wireless access point exists in the current position of the mobile terminal;
the mobile terminal comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring network information of an accessed target available wireless access point when the available wireless access point exists and the mobile terminal accesses the available wireless access point; the network information comprises the signal strength of a wireless local area network provided by the target available wireless access point received by the mobile terminal;
the scanning control module is used for determining the scanning mode of the current mobile terminal according to the network information of the target available wireless access point so as to scan the wireless local area network, wherein the scanning mode comprises active scanning and passive scanning;
the scanning control module is further configured to detect received signal strength of a wireless local area network provided by the target available wireless access point;
judging the signal intensity and the size of a preset signal threshold;
when the signal intensity is greater than or equal to the preset signal threshold, scanning the wireless local area network in a passive scanning mode;
and when the signal intensity is smaller than the preset signal threshold, scanning the wireless local area network by adopting an active scanning mode.
8. A computer device comprising a memory and a processor, the memory having stored therein computer readable instructions which, when executed by the processor, cause the processor to perform the steps of the mobile terminal wireless local area network scanning method according to any one of claims 1 to 6.
9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method for wireless local area network scanning for a mobile terminal according to any one of claims 1 to 6.
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