CN107046699B - Wireless terminal roaming method and device - Google Patents
Wireless terminal roaming method and device Download PDFInfo
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- CN107046699B CN107046699B CN201710289683.0A CN201710289683A CN107046699B CN 107046699 B CN107046699 B CN 107046699B CN 201710289683 A CN201710289683 A CN 201710289683A CN 107046699 B CN107046699 B CN 107046699B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/005—Discovery of network devices, e.g. terminals
Abstract
The invention provides a wireless terminal roaming method and a device, wherein the method is applied to a wireless terminal and comprises the following steps: when a wireless terminal roams, scanning an Access Point (AP) through a first radio frequency module of the wireless terminal; determining a new associated AP according to the scanned AP information of the AP; and disconnecting the AP currently associated with the wireless terminal through a second radio frequency module of the wireless terminal, and establishing connection with the new associated AP through the second radio frequency module. Therefore, the invention can enable the second radio frequency module to provide uninterrupted data connection service, and effectively collect surrounding AP information through the first radio frequency module, thereby enabling the wireless terminal to roam to the best AP.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for roaming a wireless terminal.
Background
WIFI (Wireless-Fidelity) is becoming more and more popular, such as in offices, smart cities, etc. In some special industries, such as medical treatment, subway, etc., there is a strong demand for WIFI application, but they all have a common requirement, that is, a mobile WIFI device is required to ensure seamless roaming, and at the same time, the bandwidth is not lower than the minimum bandwidth requirement in the seamless roaming process.
In an existing wireless terminal with a single radio frequency module, the single radio frequency module is connected to an Access Point (AP) by a WIFI client. Since the single rf module needs to scan continuously which APs are around in order to ensure that it can always switch to the nearest AP, and these APs are deployed on different channels, the single rf module needs to leave the channel on which it operates. This brings about two problems, one is that the short service is suspended, which reduces the service bandwidth as a whole; secondly, the single radio frequency module has short scanning time on each channel, and cannot effectively collect the surrounding AP information, which results in poor user experience on the non-optimal AP which can roam.
Disclosure of Invention
In view of the above, the present invention provides a roaming method and apparatus for a wireless terminal, so as to improve roaming quality and further improve user experience.
Specifically, the invention is realized by the following technical scheme:
the invention provides a wireless terminal roaming method, which is applied to a wireless terminal and comprises the following steps:
when a wireless terminal roams, scanning an Access Point (AP) through a first radio frequency module of the wireless terminal;
determining a new associated AP according to the scanned AP information of the AP;
and disconnecting the AP currently associated with the wireless terminal through a second radio frequency module of the wireless terminal, and establishing connection with the new associated AP through the second radio frequency module.
Further, the AP scanning by the first radio frequency module of the wireless terminal specifically includes:
and performing AP scanning on each channel on the working frequency band of the first radio frequency module through the first radio frequency module.
Further, the AP scanning by the first radio frequency module of the wireless terminal specifically includes:
performing AP scanning on each channel on the working frequency band of the first radio frequency module through the first radio frequency module;
the method further comprises the following steps:
when the working frequency bands of the first radio frequency module and the second radio frequency module are different, performing AP scanning on each channel on the working frequency band of the second radio frequency module through the second radio frequency module;
wherein the scanning frequency of the first radio frequency module is higher than the scanning frequency of the second radio frequency module.
Further, determining a new associated AP according to the scanned AP information of the AP specifically includes:
according to the second AP information scanned by the second radio frequency module, determining first AP information of an AP corresponding to the second AP information from the first AP information scanned by the first radio frequency module, and taking the first AP information as effective AP information;
and selecting a new associated AP according to the effective AP information.
Further, the determining, according to the second AP information scanned by the second radio frequency module, the first AP information of the AP corresponding to the second AP information from the first AP information scanned by the first radio frequency module specifically includes:
searching first AP information which carries a first BSSID and accords with a preset condition with a second BSSID carried by second AP information in the first AP information scanned by the first radio frequency module;
and determining the searched first AP information as the first AP information of the AP corresponding to the second AP information.
Based on the same conception, the invention also provides a wireless terminal roaming device, which is applied to the wireless terminal and comprises:
the first radio frequency module is used for scanning the access point AP when the wireless terminal roams;
a determining module, configured to determine a new associated AP according to the AP information of the AP scanned by the first radio frequency module;
and the second radio frequency module is used for disconnecting the AP currently associated with the wireless terminal and establishing connection with the new associated AP after the determining unit determines the new associated AP.
Further, the first radio frequency module is specifically configured to perform AP scanning on each channel on the working frequency band of the first radio frequency module.
Further, the first radio frequency module is specifically configured to perform AP scanning on each channel on the working frequency band of the first radio frequency module;
the second radio frequency module is further configured to perform AP scanning on each channel on the operating frequency band of the second radio frequency module when the wireless terminal determines that the operating frequency bands of the first radio frequency module and the second radio frequency module are different;
wherein the scanning frequency of the first radio frequency module is higher than the scanning frequency of the second radio frequency module.
Further, the determining module includes:
the first determining submodule is used for determining first AP information of an AP corresponding to second AP information from the first AP information scanned by the first radio frequency module according to the second AP information scanned by the second radio frequency module, and the first AP information is used as effective AP information;
and the second determining submodule is used for selecting a new associated AP according to the effective AP information.
Further, the first determining sub-module is specifically configured to search, in the first AP information scanned by the first radio frequency module, first AP information in which a first BSSID carried by the first radio frequency module and a second BSSID carried by the second AP information meet a preset condition; and determining the searched first AP information as the first AP information of the AP corresponding to the second AP information.
Therefore, when the wireless terminal roams, the access point AP scanning can be carried out through the first radio frequency module of the wireless terminal; determining a new associated AP according to the scanned AP information of the AP; and disconnecting the AP currently associated with the wireless terminal through a second radio frequency module of the wireless terminal, and establishing connection with the new associated AP through the second radio frequency module. The invention can make the second radio frequency module provide uninterrupted data connection service and effectively collect the surrounding AP information through the first radio frequency module, thereby the wireless terminal can roam to the best AP, the roaming quality is improved, and the user experience is further improved.
Drawings
Fig. 1 is a process flow diagram of a wireless terminal roaming method in an exemplary embodiment of the invention;
fig. 2 is a schematic diagram of roaming networking of a wireless terminal in an exemplary embodiment of the invention;
fig. 3 is a hardware configuration diagram of a wireless terminal in which a roaming apparatus of the wireless terminal is located according to an exemplary embodiment of the present invention;
fig. 4 is a logical block diagram of a roaming device of a wireless terminal according to an exemplary embodiment of the present invention.
Detailed Description
In order to solve the problems in the prior art, the invention provides a wireless terminal roaming method and a wireless terminal roaming device, which can perform Access Point (AP) scanning through a first radio frequency module of a wireless terminal when the wireless terminal roams; determining a new associated AP according to the scanned AP information of the AP; and disconnecting the AP currently associated with the wireless terminal through a second radio frequency module of the wireless terminal, and establishing connection with the new associated AP through the second radio frequency module. The invention can make the second radio frequency module provide uninterrupted data connection service and effectively collect the surrounding AP information through the first radio frequency module, thereby the wireless terminal can roam to the best AP, the roaming quality is improved, and the user experience is further improved.
Please refer to fig. 1, which is a flowchart illustrating a roaming method of a wireless terminal according to an exemplary embodiment of the present invention, where the roaming method is applied to a wireless terminal, and the wireless terminal includes a first radio frequency module and a second radio frequency module, where the second radio frequency module is used to establish a connection with an AP, and the first radio frequency module is used to continuously scan AP information of a surrounding AP, where the AP may be a normal AP or a MESH AP. The method comprises the following steps:
in this embodiment, during initialization, the working frequency bands of two radio frequency modules of the wireless terminal may be configured, specifically, the corresponding working frequency bands may be selected according to the network environment where the wireless terminal is currently located, for example, if there is only one radio frequency module in an AP in the current network, both the two radio frequency modules of the wireless terminal are configured to be the same working frequency band as the radio frequency module of the AP; if two radio frequency modules of the AP in the current network are different in working frequency band, the two radio frequency modules of the wireless terminal are respectively configured to be the same working frequency band corresponding to the two radio frequency modules of the AP. After the configuration is completed, the wireless terminal can control the second radio frequency module to connect with the radio frequency module of the current AP according to the configured working frequency band, and establish uplink and downlink data channels.
In this embodiment, no matter whether the working frequency bands of the first radio frequency module and the second radio frequency module of the wireless terminal are the same or not, the wireless terminal may perform AP scanning on each channel on the working frequency band of the first radio frequency module through the first radio frequency module to acquire AP information. Because the first radio frequency module is only used for AP scanning, the connection between the second radio frequency module and the AP can be ensured not to be interrupted.
In a preferred embodiment of the present invention, when the operating frequency bands of the first radio frequency module and the second radio frequency module are different, the wireless terminal of the present invention may further perform AP scanning on each channel on the operating frequency band of the second radio frequency module through the second radio frequency module; wherein the scanning frequency of the first radio frequency module is higher than the scanning frequency of the second radio frequency module. In the prior art, when a single radio frequency module meets a roaming trigger condition (for example, the signal strength is lower than a threshold), AP scanning is performed, which may easily cause service interruption of the single radio frequency module. Compared with the prior art, the method can enable the second radio frequency module to only perform periodic AP scanning, for example, scanning once every 10 seconds, and is used for acquiring surrounding AP information; the first radio frequency module always scans the AP (the scanning frequency of the first radio frequency module is far greater than that of the second radio frequency module) to acquire the AP information, so that the wireless terminal selects a new associated AP according to the AP information scanned by the first radio frequency module and the second radio frequency module.
when it is determined that roaming is needed, the wireless terminal may select an optimal AP as a new associated AP for the roaming of the wireless terminal according to the scanned AP information of the APs, such as signal strength, distance from the terminal, and the like, so as to implement seamless roaming of the wireless terminal and ensure that the wireless terminal can roam to the optimal AP.
As an embodiment, regardless of whether the operating frequency bands of the two radio frequency modules of the AP are the same, the wireless terminal may determine a new associated AP only according to the AP information scanned by the first radio frequency module, where a specific determination process is the prior art and is not described in detail herein.
As another embodiment, when the AP has two radio frequency modules with different operating frequency bands, that is, the operating frequency bands of the first radio frequency module and the second radio frequency module of the wireless terminal are different, the two radio frequency modules of the wireless terminal respectively scan the AP information at their respective scanning frequencies, for example, the AP information scanned by the first radio frequency module is referred to as first AP information, and the AP information scanned by the second radio frequency module is referred to as second AP information. The wireless terminal can determine first AP information of an AP corresponding to second AP information from the first AP information scanned by the first radio frequency module according to the second AP information scanned by the second radio frequency module, and the first AP information is used as effective AP information; and selecting a new associated AP according to the effective AP information. If a certain first AP information is valid AP information, it indicates that both the two radio frequency modules of the AP corresponding to the first AP information can work normally. Because the scanning frequency of the second rf module is significantly lower than that of the first rf module, the AP information scanned by the first rf module during roaming is not accurate, and therefore the AP information scanned by the first rf module needs to be used as a main basis for determining a new associated AP. Therefore, the invention can improve the scanning accuracy, reduce the scanning times of the second radio frequency and avoid the problem of service interruption by respectively executing the scanning and connecting work by the two radio frequency modules.
In an optional embodiment of the present invention, the wireless terminal may search, in the first AP information scanned by the first radio frequency module, first AP information that a first BSSID (Basic Service Set Identifier) carried by the first AP information and a second BSSID carried by the second AP information meet a preset condition; therefore, the searched first AP information is determined as the first AP information of the AP corresponding to the second AP information, which may also indicate that the first AP information and the second AP information are the AP information of the same AP.
Specifically, the AP information generally includes BSSID and signal strength, and the BSSID may be presented in the form of MAC address, and since the base addresses corresponding to the two radio frequency modules of the AP are different, the first radio frequency module and the second radio frequency module of the wireless terminal respectively scan BSSIDs of radio frequencies in the first frequency band and the second frequency band corresponding to the same AP. Because the first BSSID and the second BSSID belonging to the same AP conform to a certain preset condition, the wireless terminal may obtain the first BSSID included in the first AP information, obtain the second BSSID included in the second AP information, and then search for the first AP information, in which the carried first BSSID and the second BSSID carried by the second AP information conform to the preset condition, as valid AP information.
For example, suppose that the first rf module scans a 2.4G frequency band of a wireless network with SSID name wangfu, and scans 3 BSSIDs with values of 0e00fc-000d02,0e00fc-00ac02, and 0e00fc-000903, respectively; after dividing by 16 and rounding, the corresponding base addresses are respectively 0e00fc-000d00,0e00fc-00ac00 and 0e00 fc-000900. The frequency band of 5G of the wireless network with the SSID name of wangfu scanned by the second radio frequency module also scans 3 BSSIDs (base station system identifiers), and the values are 0e00fc-000d11,0e00fc-00ac11 and 0e00fc-000912 respectively; after dividing by 16 and rounding, the corresponding base addresses are respectively 0e00fc-000d10,0e00fc-00ac10 and 0e00 fc-000910. According to the corresponding relationship between the base address of the second radio frequency module of the factory AP and the base address of the first radio frequency module (for example, the base address of the second radio frequency module is 16 higher than the base address of the first radio frequency module), it can be determined that 0e00fc-000d00 corresponds to 0e00fc-000d10,0e00 fc-00ac00 corresponds to 0e00fc-00ac10, and 0e00fc-000900 corresponds to 0e00 fc-000910. It can thus be determined that 0e00fc-000d02 and 0e00fc-000d11 are AP information belonging to the same AP, 0e00fc-00ac02 and 0e00fc-00ac11 are AP information belonging to the same AP, and 0e00fc-000903 and 0e00fc-000912 are AP information belonging to the same AP. The AP information corresponding to the 3 BSSIDs scanned by the first rf module, whose values are 0e00fc-000d02,0e00fc-00ac02, and 0e00fc-000903 respectively, may be considered as valid AP information.
The AP with the two radio frequency modules can meet more requirements of users, for example, 2.4G can better penetrate barriers, and 5G signal attenuation can more accurately feed back the distance from the AP to the terminal, so that the wireless terminal can enhance the applicability of the wireless terminal and enrich application scenes by arranging the two radio frequency modules corresponding to the AP.
And 103, disconnecting the AP currently associated with the wireless terminal through a second radio frequency module of the wireless terminal, and establishing connection with the new associated AP through the second radio frequency module.
After determining the new associated AP, when the wireless terminal roams, the wireless terminal can disconnect from the AP currently associated with the wireless terminal through the second radio frequency module of the wireless terminal, and establish connection with the new associated AP through the second radio frequency module.
As an embodiment, when the second radio frequency module establishes a connection with the AP, a WIFI connection may be established or a wireless Mesh (Mesh) connection may be established.
Therefore, the invention can enable the second radio frequency module to provide uninterrupted data connection service, and effectively collect surrounding AP information through the first radio frequency module, thereby enabling the wireless terminal to roam to the best AP, improving roaming quality and further improving user experience.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the solution of the present invention is further described in detail with reference to fig. 2.
Fig. 2 is a schematic view of a roaming networking of a wireless terminal in the embodiment of the present invention, where the wireless terminal in the embodiment takes a WIFI terminal as an example for description. The network comprises a WIFI terminal, and APs 1, 2, APs 3 and APs 4 which are distributed at different positions, wherein the WIFI terminal is provided with a first radio frequency module and a second radio frequency module, the first radio frequency module is used for scanning AP information, and the second radio frequency module is used for establishing connection with the APs.
The first condition is as follows:
if the APs in the network all have the single radio frequency modules, the WIFI terminal can set the working frequency bands of the first radio frequency module and the second radio frequency module to be the same as the working frequency bands of the single radio frequency modules of the APs.
Assuming that the AP currently connected to the WIFI terminal is AP1, the second radio frequency module of the WIFI terminal may establish connection with the radio frequency module of AP1, and the first radio frequency module may scan surrounding AP information, so as to obtain AP information of AP1, AP2, AP3, and AP4, where AP1 is the nearest AP to the WIFI terminal; when the WIFI terminal moves from the position A to the position A', a roaming condition is triggered, the first radio frequency module scans surrounding AP information to obtain the information of the AP1, the AP2, the AP3 and the AP4 again, and then an optimal AP is compared as a new associated AP for roaming of the WIFI terminal according to the AP information. For example, if an optimal AP is selected according to the distance between the WIFI terminal and the AP, when the WIFI terminal is located at the position a', the WIFI terminal may calculate the distance between the WIFI terminal and the AP according to the information of the AP collected by the first radio frequency module, and after comparison, it is found that the AP3 is closest to the WIFI terminal, so that the AP3 may be used as a new associated AP for roaming of the WIFI terminal, and the WIFI terminal disconnects from the AP1 through the second radio frequency module and establishes a connection with the AP 3.
Case two:
if the APs in the network all have two different radio frequency modules with different working frequency bands, and the working frequency bands are 2.4G and 5G respectively, the WIFI terminal can set the working frequency bands of the first radio frequency module and the second radio frequency module to be 2.4G and 5G respectively.
Assuming that the AP currently connected to the WIFI terminal is AP1, the second radio frequency module of the WIFI terminal may establish connection with the working radio frequency module of AP1, and the first radio frequency module may continuously scan AP information on each channel of 2.4G, so as to obtain first AP information of AP1, AP2, AP3, and AP4, which are AP1-1, AP2-1, AP3-1, and AP4-1, respectively; the second radio frequency module scans the AP information on each channel of the 5G every ten seconds, and if the second radio frequency module of the AP4 fails, the second radio frequency module can only acquire second AP information of the AP1, the AP2 and the AP3, namely AP1-2, AP2-2 and AP 3-2; when the WIFI terminal moves from the position A to the position A', a roaming condition is triggered, and the WIFI terminal acquires the first AP information and the second AP information scanned by the first radio frequency module and the second radio frequency module and then selects effective AP information. Specifically, as the AP1-1 has the corresponding AP1-2, the AP2-1 has the corresponding AP2-2, the AP3-1 has the corresponding AP3-2, and only the AP4-1 does not have the corresponding second AP information, it is determined that the AP1-1, the AP2-1, and the AP3-1 are valid AP information, and the WIFI terminal may compare an optimal AP as a new associated AP for the WIFI terminal to roam according to the valid AP information. For example, if an optimal AP is selected according to the distance between the WIFI terminal and the AP, when the WIFI terminal is located at the position a', the WIFI terminal may calculate the distance between the WIFI terminal and the AP according to the information of the AP collected by the first radio frequency module, and after comparison, it is found that the AP3 is closest to the WIFI terminal, so that the AP3 may be used as a new associated AP for roaming of the WIFI terminal, and the WIFI terminal disconnects from the AP1 through the second radio frequency module and establishes a connection with the AP 3.
Based on the same conception, the invention also provides a wireless terminal roaming device, which can be realized by software, or by hardware or a combination of the software and the hardware. Taking software implementation as an example, the wireless terminal roaming device of the present invention is a logical device, and is implemented by reading, by a CPU of a wireless terminal where the wireless terminal is located, a corresponding computer program instruction in a memory, which can implement the wireless terminal roaming method, and then running the computer program instruction.
Referring to fig. 3, a wireless terminal roaming apparatus 400 according to an exemplary embodiment of the present invention is applied to a wireless terminal, the apparatus basically operates in an environment including a CPU, a memory and other hardware, and from a logic level, a logic structure of the apparatus 400 is shown in fig. 4, where the apparatus includes:
a first radio frequency module 401, configured to scan an access point AP when the wireless terminal roams;
a determining module 402, configured to determine a new associated AP according to the AP information of the AP scanned by the first radio frequency module;
a second radio frequency module 403, configured to disconnect from the AP currently associated with the wireless terminal and establish a connection with the new associated AP after the determining unit determines the new associated AP.
Optionally, the first radio frequency module 401 is specifically configured to perform AP scanning on each channel on the working frequency band of the first radio frequency module.
Optionally, the first radio frequency module 401 is specifically configured to perform AP scanning on each channel on the working frequency band of the first radio frequency module;
the second radio frequency module 403 is further configured to perform AP scanning on each channel on the working frequency band of the second radio frequency module when the wireless terminal determines that the working frequency bands of the first radio frequency module and the second radio frequency module are different;
wherein the scanning frequency of the first radio frequency module is higher than the scanning frequency of the second radio frequency module.
Optionally, the determining module 402 includes:
the first determining sub-module 4021 is configured to determine, according to the second AP information scanned by the second radio frequency module, first AP information of an AP corresponding to the second AP information from the first AP information scanned by the first radio frequency module, where the first AP information is used as effective AP information;
the second determining sub-module 4022 is configured to select a new associated AP according to the valid AP information.
Optionally, the first determining sub-module 4021 is specifically configured to search, in the first AP information scanned by the first radio frequency module, first AP information that a first BSSID carried by the first radio frequency module and a second BSSID carried by the second AP information meet a preset condition; and determining the searched first AP information as the first AP information of the AP corresponding to the second AP information.
Therefore, when the wireless terminal roams, the access point AP scanning can be carried out through the first radio frequency module of the wireless terminal; determining a new associated AP according to the scanned AP information of the AP; and disconnecting the AP currently associated with the wireless terminal through a second radio frequency module of the wireless terminal, and establishing connection with the new associated AP through the second radio frequency module. The invention can make the second radio frequency module provide uninterrupted data connection service and effectively collect the surrounding AP information through the first radio frequency module, thereby the wireless terminal can roam to the best AP, the roaming quality is improved, and the user experience is further improved.
The implementation process of the functions and actions of each unit in the above device is specifically described in the implementation process of the corresponding step in the above method, and is not described herein again.
For the device embodiments, since they substantially correspond to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the application. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (4)
1. A wireless terminal roaming method, characterized in that the method is applied to a wireless terminal, and the method comprises:
when the wireless terminal roams, performing AP scanning on each channel on the working frequency band of a first radio frequency module through the first radio frequency module;
when the working frequency bands of the first radio frequency module and the second radio frequency module are different, performing AP scanning on each channel on the working frequency band of the second radio frequency module through the second radio frequency module; wherein the scanning frequency of the first radio frequency module is higher than the scanning frequency of the second radio frequency module;
according to the second AP information scanned by the second radio frequency module, determining first AP information of an AP corresponding to the second AP information from the first AP information scanned by the first radio frequency module, taking the first AP information as effective AP information, and selecting a new associated AP according to the effective AP information;
and disconnecting the AP currently associated with the wireless terminal through a second radio frequency module of the wireless terminal, and establishing connection with the new associated AP through the second radio frequency module.
2. The method according to claim 1, wherein the determining, according to the second AP information scanned by the second radio frequency module, first AP information of an AP corresponding to the second AP information from the first AP information scanned by the first radio frequency module specifically includes:
searching first AP information which carries a first BSSID and accords with a preset condition with a second BSSID carried by second AP information in the first AP information scanned by the first radio frequency module;
and determining the searched first AP information as the first AP information of the AP corresponding to the second AP information.
3. A wireless terminal roaming apparatus, wherein the apparatus is applied to a wireless terminal, the apparatus comprises:
the first radio frequency module is used for carrying out AP scanning on each channel on the working frequency band of the first radio frequency module when the wireless terminal roams;
the second radio frequency module is used for performing AP scanning on each channel on the working frequency band of the second radio frequency module when the wireless terminal determines that the working frequency bands of the first radio frequency module and the second radio frequency module are different; wherein the scanning frequency of the first radio frequency module is higher than the scanning frequency of the second radio frequency module;
a determining module, configured to determine, according to the second AP information scanned by the second radio frequency module, first AP information of an AP corresponding to the second AP information from the first AP information scanned by the first radio frequency module, to serve as effective AP information, and select a new associated AP according to the effective AP information;
and the second radio frequency module is used for disconnecting the AP currently associated with the wireless terminal and establishing connection with the new associated AP after the determining module determines the new associated AP.
4. The apparatus of claim 3,
the determining module is specifically configured to search, in the first AP information scanned by the first radio frequency module, first AP information in which a first BSSID carried by the first AP information and a second BSSID carried by the second AP information meet a preset condition; and determining the searched first AP information as the first AP information of the AP corresponding to the second AP information.
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| CN108124301A (en) * | 2017-12-29 | 2018-06-05 | 深圳市智搜信息技术有限公司 | A kind of connection method of wireless aps and its system |
| CN111343674B (en) * | 2018-12-18 | 2022-05-31 | 美的集团股份有限公司 | Multi-frequency band switching method and device of wireless network |
| CN111918350A (en) * | 2020-07-30 | 2020-11-10 | 展讯半导体(成都)有限公司 | Wireless roaming method, device, equipment and storage medium |
| CN112954756B (en) * | 2021-04-23 | 2023-04-28 | Oppo广东移动通信有限公司 | Wireless roaming method, AP device, terminal device and wireless roaming system |
| CN113784425B (en) * | 2021-09-23 | 2023-05-26 | 新华三技术有限公司 | Wireless network energy saving method and device |
| CN114916021B (en) * | 2022-05-17 | 2023-04-28 | 上海山源电子科技股份有限公司 | Downhole roaming system |
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