CN112040520B - Network switching method, device, terminal equipment and computer storage medium - Google Patents

Network switching method, device, terminal equipment and computer storage medium Download PDF

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CN112040520B
CN112040520B CN202010847976.8A CN202010847976A CN112040520B CN 112040520 B CN112040520 B CN 112040520B CN 202010847976 A CN202010847976 A CN 202010847976A CN 112040520 B CN112040520 B CN 112040520B
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access point
wireless access
signal
interval
signal strength
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CN112040520A (en
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洪灶根
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Oppo Chongqing Intelligent Technology Co Ltd
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Oppo Chongqing Intelligent Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data

Abstract

The embodiment of the application discloses a network switching method, a network switching device, terminal equipment and a computer storage medium, wherein the method comprises the following steps: detecting the network quality of a first wireless access point currently accessed by the terminal equipment; the network quality is determined by the frequency band of the first wireless access point, the signal intensity of the first wireless access point and the data retransmission rate; and when the network quality is lower than a network quality threshold value, switching to connect to a second wireless access point from the first wireless access point, wherein the network quality of the second wireless access point is higher than that of the first wireless access point. By implementing the embodiment of the application, the network quality can be evaluated from multiple dimensions, and when the network quality of the first wireless access point is determined to be low, the wireless access point accessed by the terminal equipment can be switched in time, so that the data transmission efficiency is improved.

Description

Network switching method, device, terminal equipment and computer storage medium
Technical Field
The present application relates to the field of communications technologies, and in particular, to a network switching method and apparatus, a terminal device, and a computer storage medium.
Background
At present, after a terminal device establishes a connection with a certain wireless Access Point (AP), if the terminal device is far enough away from the AP, the terminal device will automatically disconnect from the AP. However, in practice, it has been found that when the terminal device is far from the AP but the connection with the AP is not completely disconnected, the communication between the terminal device and the AP is often in an unclogged state, which results in inefficient data transmission between the terminal device and the AP.
Disclosure of Invention
The embodiment of the application discloses a network switching method, a network switching device, terminal equipment and a computer storage medium, which can improve the efficiency of data transmission.
The embodiment of the application discloses a network switching method, which comprises the following steps: detecting the network quality of a first wireless access point currently accessed by the terminal equipment; the network quality is determined by the frequency band of the first wireless access point, the signal strength of the first wireless access point and the data retransmission rate; and when the network quality is lower than a network quality threshold value, switching to connect to a second wireless access point from the first wireless access point, wherein the network quality of the second wireless access point is higher than that of the first wireless access point.
The embodiment of the application discloses a network switching device, which is applied to terminal equipment, and the device comprises: the detection unit is used for detecting the network quality of a first wireless access point currently accessed by the terminal equipment; the network quality is determined by the frequency band of the first wireless access point, the signal intensity of the first wireless access point and the data retransmission rate; and the switching unit is used for switching and connecting to a second wireless access point from the first wireless access point when the network quality is lower than a network quality threshold value, wherein the network quality of the second wireless access point is higher than that of the first wireless access point.
The embodiment of the application discloses a terminal device, which comprises a memory and a processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the processor is enabled to realize the network switching method disclosed by the embodiment of the application.
The embodiment of the application discloses a computer readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the computer program realizes the network switching method disclosed by the embodiment of the application.
Compared with the prior art, the embodiment of the application has the following beneficial effects:
in the embodiment of the application, the network quality of the first wireless access point can be determined by integrating the frequency band, the signal strength and the data retransmission rate of the first wireless access point, so that the network quality can be evaluated from multiple dimensions, and errors possibly caused when the network quality is evaluated by adopting a single index are reduced. After the network quality is accurately identified, if the network quality of the first wireless access point is lower than a network quality threshold, the first wireless access point can be switched to be connected to a second wireless access point with higher network quality, so that the wireless access points accessed by the terminal equipment can be switched in time, the data transmission efficiency is improved, the problem of too high switching frequency caused by blind network switching can be solved, and the stability of the network is maintained.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an exemplary diagram of an application scenario of a network handover method disclosed in an embodiment of the present application;
fig. 2 is a schematic flowchart of a network handover method disclosed in an embodiment of the present application;
FIG. 3 is an exemplary diagram of a TCP retransmission mechanism disclosed in an embodiment of the present application;
fig. 4 is a schematic flowchart of another network handover method disclosed in an embodiment of the present application;
fig. 5A is an exemplary diagram of different frequency bands corresponding to the same signal strength interval disclosed in the embodiment of the present application;
fig. 5B is an exemplary diagram of different signal strength intervals corresponding to different frequency bands disclosed in the embodiment of the present application;
fig. 5C is an exemplary diagram of a data retransmission rate interval disclosed in an embodiment of the present application;
fig. 6 is a flowchart illustrating another network handover method disclosed in an embodiment of the present application;
fig. 7 is a schematic structural diagram of a network switching apparatus disclosed in an embodiment of the present application;
fig. 8 is a schematic structural diagram of a terminal device disclosed in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "comprising" and "having," and any variations thereof, in the examples and figures herein are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
The embodiment of the application discloses a network switching method, a network switching device, terminal equipment and a computer storage medium. The following are detailed descriptions.
Referring to fig. 1, fig. 1 is a diagram illustrating an application scenario of a network switching method according to an embodiment of the present application. As shown in fig. 1, may include a terminal device 10 and at least one wireless access point 20 (AP). The terminal device 10 may be an electronic device such as a mobile phone, a personal computer, a tablet computer, and the like, and is not limited in particular. The wireless access point 20 may be, without limitation, a device providing a wireless network access point for a wireless router, a bridge, or the like. The wireless access point 20 may transmit wireless signals and the terminal device 10 accesses a wireless network provided by the wireless access point 20 by receiving the wireless signals transmitted by the wireless access point 20. For example, the wireless access point 20 may provide a wireless fidelity (Wi-Fi) network.
Referring to fig. 2, fig. 2 is a schematic flowchart illustrating a network switching method according to an embodiment of the present disclosure. The network switching method may be applied to the terminal device, as shown in fig. 2, and the network switching method may include:
210. and detecting the network quality of a first wireless access point currently accessed by the terminal equipment.
In the embodiment of the application, the network quality of the first wireless access point which is accessed currently can be detected in real time; alternatively, the network quality of the first wireless access point may also be detected when the data transmission amount between the terminal device and the first wireless access point is detected to be large (e.g. greater than the transmission amount threshold); or, the network quality of the first wireless access point is detected when an application program (such as an online video playing application) with a high network dependency is detected to be started, which is not limited in this embodiment.
In the embodiment of the present application, the network quality of the first wireless access point may be determined by the frequency band in which the first wireless access point is located, the signal strength of the first wireless access point, and the data retransmission rate.
Wherein the first wireless access point can transmit wireless signals of different frequency bands, such as 2.4GHz (hertz) or 5 GHz. Before accessing the first wireless access point, the terminal device may select an accessed frequency band and access the first wireless access point through the selected frequency band. The characteristics of wireless signals of different frequency bands in the aspects of penetrability, interference carrying capacity and the like are different, for example, the wavelength of a 2.4GHz wireless signal is longer, the penetrability is stronger, but the interference resistance is weaker; and the 5GHz wireless signal has shorter wavelength and weaker penetration capability but stronger anti-interference capability. The frequency bands selected by the terminal device when accessing the first wireless access point are different, and the network quality of the wireless network provided by the first wireless access point may also be different.
Further, the terminal device may determine a Received Signal Strength (RSSI) of the wireless Signal as the Signal Strength of the first wireless access point when receiving the wireless Signal transmitted by the first wireless access point. RSSI may be used to characterize the quality of a wireless signal.
After accessing the first wireless access point, the terminal device may perform data transmission based on the wireless network provided by the first wireless access point. The wireless network may use a communication Protocol such as Transmission Control Protocol (TCP) for data Transmission. When the network environment is poor, there may be a case where a large amount of data is repeatedly transmitted (i.e., data retransmission). In the embodiment of the present application, the data retransmission rate may be calculated according to the total amount of data sent in a certain time and the amount of data that needs to be retransmitted. The data retransmission rate can be used to characterize the stability of the wireless network data transmission.
Taking the TCP protocol as an example, in a communication process, after a sender sends a TCP message, a receiver needs to reply an Acknowledgement Character (ACK) message. The ACK message may be used to indicate that the receiving party has successfully and correctly received the TCP message sent by the sending party. After the receiving side replies the ACK message, it can be regarded as completing one TCP transmission. Otherwise, if the ACK message replied by the receiver is not received within a certain time after the sender sends the TCP message, it may be considered that the currently sent data packet is not successfully sent and needs to be retransmitted. Referring to fig. 3, fig. 3 is a diagram illustrating an exemplary TCP retransmission mechanism according to an embodiment of the present disclosure. As shown in fig. 3, the sender sends three TPC messages to the receiver, which are: a TCP packet seq =1, a TCP packet seq =2, and a TCP packet seq = 3. Correspondingly, the receiver replies two ACK messages to the sender, which are: ACK =1 ACK message and ACK =3 ACK message. Wherein ACK =1 ACK message is replied by the receiving side after receiving the seq =1 TCP message, and ACK =3 ACK message is replied by the receiving side after receiving the seq =3 TCP message. As can be seen, after sending the seq =2 TCP packet, the sender does not receive the ACK packet replied by the receiver according to the seq =2 TCP packet, so the sender may retransmit the seq =2 TCP packet. Therefore, the data retransmission rate can be calculated according to the total number of the TCP messages sent in a certain time and the retransmission number of the TCP messages needing to be retransmitted.
220. Switching connection from the first wireless access point to the second wireless access point when the network quality is below a network quality threshold.
In an embodiment of the application, the network quality of the second wireless access point is higher than the network quality of the first wireless access point. The network quality of the second wireless access point can also be determined by the frequency band of the second wireless access point, the signal strength of the second wireless access point and the data retransmission rate.
The network quality threshold may be set with reference to the network quality of the first wireless access point when the terminal device does not detect network congestion. When the network quality is lower than a preset quality threshold, the terminal device may scan one or more candidate wireless access points connectable within a certain distance range, and detect the network quality of each candidate wireless access point, so that a second wireless access point with a network quality higher than that of the first wireless access point may be selected from each candidate wireless access point.
As an optional implementation manner, in this embodiment of the application, if at least two second wireless access points exist in the candidate wireless access points, a target wireless access point may be selected from the at least two second wireless access points according to a preset rule, and the target wireless access point is switched to connect from the first wireless access point. The preset rule may include, but is not limited to, any of the following: selecting a second wireless access point with the highest network quality as a target wireless access point; selecting a second wireless access point which is closest to the terminal equipment as a target wireless access point; selecting a second wireless access point stored by the terminal equipment as a target wireless access point; and selecting the second wireless access point with the least number of the current connected devices as the target wireless access point.
As an optional implementation manner, in this embodiment of the application, the second wireless access point may be a wireless access point that is already stored by the terminal device, or may be a wireless access point that is not already stored by the terminal device. If the second wireless access point is the stored wireless access point, the second wireless access point can be directly switched to connect from the first wireless access point without prompting the user of the terminal equipment to input the password of the second wireless access point. If the second wireless access point is a wireless access point which is not stored, the terminal equipment can disconnect the first wireless access point and output prompt information for prompting to input the password of the second wireless access point; and when the password of the second wireless entry point input by the user is verified to be correct, switching to connect to the second wireless entry point.
In the embodiment of the application, the network quality of the first wireless access point can be determined by integrating the frequency band, the signal strength and the data retransmission rate of the first wireless access point, so that the network quality can be evaluated from multiple dimensions, and errors possibly caused when the network quality is evaluated by adopting a single index are reduced. For example, the throughput of the wireless access point of 5GHz is higher than that of the wireless access point of 2.4GHz, and if the frequency band of the first wireless access point accessed by the terminal device is 5GHz, even if the signal strength of the first wireless access point is small (e.g., less than-70 dBm), a better network experience can be provided. If the network switching is performed simply according to the signal strength, the network speed may be reduced, and the network experience may be deteriorated. In the embodiment of the application, the accuracy of evaluating the network quality through multiple dimensions is high, and when the network quality of the currently accessed first wireless access point is detected to be lower than the network quality threshold value, the second wireless access point with higher network quality is switched and connected, so that the wireless access points accessed by the terminal equipment can be switched in time, the efficiency of data transmission is improved, the problem of too fast switching frequency caused by blind network switching can be reduced, the stability of the network is maintained, and the network experience provided for a user can be improved.
Referring to fig. 4, fig. 4 is a schematic flow chart illustrating another network handover method according to an embodiment of the present disclosure. The network switching method may be applied to the terminal device, as shown in fig. 4, and the network switching method may include:
410. and determining at least two signal strength intervals corresponding to the frequency band of the first wireless access point which is accessed currently.
In the embodiment of the present application, the signal strength interval may be an interval with a preset signal strength threshold as a boundary value. The signal strength intervals corresponding to different frequency bands may be the same or different. When the signal intensity intervals corresponding to different frequency bands are the same, the number of the signal intensity intervals corresponding to each frequency band is the same, and two boundary values of each corresponding signal intensity interval are the same; when the signal intensity intervals corresponding to different frequency bands are different, the number of the signal intensity intervals corresponding to each frequency band is different; or, when the number of the signal strength sections corresponding to each frequency band is the same, at least one boundary value of the corresponding signal strength sections is different.
For example, please refer to fig. 5A, fig. 5A is an exemplary diagram of different frequency bands corresponding to the same signal strength interval disclosed in the embodiment of the present application. As shown in fig. 5A, the 2.4GHz band may correspond to three signal strength intervals, which are: interval 1 (- ∞, L3_2G 4), interval 2[ L3_2G4, L2_2G4 ], interval 3[ L2_2G4, L1_2G 4), wherein L3_2G4 < L2_2G4 < L1_2G4. The frequency band of 5GHz may correspond to three signal strength intervals, which are: interval 4 (- ∞, L3_ 5G), interval 5[ L3_5G ], interval 2[ L2_5G ], interval 6[ L2_5G ], and interval 1 _5G). Wherein L3_5G < L2_5G < L1_5G, L3 _2G4is the same as L3_5G, L2_2G4 is the same as L2_5G, and L1_2G4 is the same as L1_ 5G.
For example, please refer to fig. 5B, wherein fig. 5B is an exemplary diagram of different signal strength intervals corresponding to different frequency bands disclosed in the embodiment of the present application. As shown in fig. 5B, the 2.4GHz band may correspond to three signal strength intervals, which are: interval 7 (- ∞, L9_2G 4), interval 8[ L9_2G4, L8_2G4 ], interval 9[ L8_2G4, L7_2G4 ], wherein L9_2G4 < L8_2G4 < L7_2G4. The frequency band of 5GHz may correspond to three signal strength intervals, which are: interval 10 (- ∞, L9_ 5G), interval 11[ L9_5G ], interval 8[ L8 ] \ u 5G ], interval 12[ L8 ] \ u 5G ], and interval 7 _5G). Wherein L9_5G < L8_5G < L7_5G, and L9 _2G4is the same as L9_5G, L8_2G4 is different from L8_5G, and L7_2G4 is different from L7_ 5G. That is, the section 7 is the same as the section 10, but the section 8 is different from the section 11, and the section 9 is different from the section 12.
In the embodiment of the present application, the greater the number of signal strength intervals, the greater the influence of the signal strength on the network quality evaluation. As an alternative implementation, the number of signal strength sections corresponding to the first frequency band may be set to be smaller than the number of signal strength sections corresponding to the second frequency band. The first frequency band may be higher than the second frequency band, and the throughput of the first frequency band is higher than that of the second frequency band, so that when the throughput is higher, the efficiency of data transmission may be maintained at a higher level even though the signal strength is lower. Therefore, the influence of the signal strength on the network quality evaluation can be reduced by reducing the number of signal strength intervals.
420. And determining a target signal strength interval in which the signal strength of the first wireless access point is positioned in at least two signal strength intervals.
In this embodiment, the terminal device may detect the current signal strength of the first wireless access point, compare the detected signal strength with the boundary value of each signal strength interval, and may determine a target signal strength interval in which the signal strength of the first wireless access point is located. For example, it is assumed that the frequency band of the first wireless access point is 2.4GHz, and the corresponding signal strength interval is as shown in fig. 5A. If the RSSI-1 of the first ap is greater than L3_2G4 and smaller than L2_2G4, the target RSSI interval in which the RSSI-1 of the first ap is located is the interval 2.
430. And determining a target retransmission rate interval in which the data retransmission rate of the first wireless access point is located in at least two data retransmission rate intervals.
In this embodiment, at least two data retransmission rate intervals may be preset, and the signal strength interval may be an interval with a preset data retransmission rate threshold as a boundary value. For example, please refer to fig. 5C, fig. 5C is an exemplary diagram of a data retransmission rate interval disclosed in the embodiment of the present application. As shown in fig. 5C, three data retransmission rate intervals may be preset, which are: the interval one (R1, R2), the interval two (R2, R3), and the interval three (R3, + ∞), wherein R1 < R2 < R3.
The terminal device may detect a current data retransmission rate of the first wireless access point, compare the detected data retransmission rate with a boundary value of each data retransmission rate interval, and determine a target retransmission rate interval in which the data retransmission rate of the first wireless access point is located. For example, assuming that the data retransmission rate R of the first wireless access point is greater than R1 and less than R2, the target retransmission rate interval in which the data retransmission rate R of the first wireless access point is located is the interval one described above.
440. And determining the network quality of the first wireless access point according to the target signal strength interval and the target retransmission rate interval.
In this embodiment, as an optional implementation manner, a first arrangement position of the target signal strength interval in the at least two signal strength intervals and a second arrangement position of the target retransmission rate interval in the at least two retransmission rate intervals may be determined, and the network quality of the first wireless access point may be determined according to the first arrangement position and the second arrangement position. For example, the earlier the first ranking position or the second ranking position, the higher the network quality of the first wireless access point.
In the embodiment of the present application, as another optional implementation manner, a signal strength interval and a data retransmission rate interval may be assigned, and network quality may be determined according to the assignment of the signal strength interval and the data retransmission rate interval. That is, each signal strength interval may correspond to a signal quality score, and each data retransmission rate interval may correspond to a transmission quality score. After the target signal strength interval and the target retransmission rate interval are determined, the network quality corresponding to the first wireless access point can be determined according to the first signal quality score corresponding to the target signal strength interval and the first transmission quality score corresponding to the target retransmission rate.
Optionally, determining the network quality corresponding to the first radio access point according to the first signal quality score corresponding to the target signal strength interval and the first transmission quality score corresponding to the target retransmission rate may include, but is not limited to, the following two implementation manners:
the first method is as follows: the boundary value between the signal quality score and the signal strength interval may be in a negative correlation, and the assigned score between the transmission quality score and the data retransmission rate interval may be in a positive correlation. Accordingly, the initial score may be subtracted by the first signal quality score and the first transmission score to obtain the network quality corresponding to the first radio access point. When the signal quality score is in a negative correlation with a boundary value of the signal strength interval, the higher the signal strength of the first wireless access point is, the higher a boundary value (e.g., an upper limit) of a target signal strength interval in which the signal strength of the first wireless access point is, the lower the corresponding first signal quality score is. When the transmission quality score and the assignment of the data retransmission rate interval are in a positive correlation, the higher the data retransmission rate of the first wireless access point is, the higher the boundary value (e.g., upper limit) of the target retransmission rate interval where the data retransmission rate of the first wireless access point is, the higher the corresponding first transmission quality score is. Thus, the higher the signal strength, the better the network quality may be, and the less the signal quality score subtracted from the initial score; the higher the data retransmission rate, the worse the network quality may be, and the more the transmission quality score is subtracted from the initial score. After subtracting the first signal quality score and the first transmission score from the initial score, the network quality is better as the finally obtained value of the network quality corresponding to the first radio access point is higher.
The second method comprises the following steps: the signal quality score and the boundary value of the signal strength interval may be in a positive correlation, and the transmission quality score and the assignment of the data retransmission rate interval may be in a negative correlation. Accordingly, the sum of the first signal quality score and the first transmission score may be used as the network quality corresponding to the first radio access point. When the signal quality score is in a positive correlation with a boundary value of the signal strength interval, the higher the signal strength of the first wireless access point is, the higher a boundary value (e.g., an upper limit) of a target signal strength interval in which the signal strength of the first wireless access point is, the higher the corresponding first signal quality score is. When the transmission quality score and the assignment of the data retransmission rate interval are in a negative correlation relationship, the higher the data retransmission rate of the first wireless access point is, the higher the boundary value (e.g., upper limit) of the target retransmission rate interval where the data retransmission rate of the first wireless access point is, the lower the corresponding first transmission quality score is. Thus, the higher the signal strength, the higher the first signal quality score, the higher the sum between the first signal quality score and the first transmission quality score, the better the network quality of the first wireless access point; the higher the data retransmission rate, the lower the sum between the first signal quality score and the first transmission quality score, and the worse the network quality of the first wireless access point.
In the embodiment of the application, by assigning a score to the signal strength interval and the data retransmission rate interval and determining the network quality according to the assignment of the signal strength interval and the data retransmission rate interval, the evaluation process of the network quality can be quantified, so that the network quality is determined more reliably.
In this embodiment, as another optional implementation manner, after assigning scores to the signal strength interval and the data retransmission rate interval, a weight corresponding to the signal quality score and/or a weight corresponding to the transmission quality score may also be set, and the network quality may be determined according to the assigned scores to the signal strength interval and the data retransmission rate interval and the weight corresponding to the signal quality score and/or the weight corresponding to the transmission quality score. The weight corresponding to the signal quality score can be used for indicating the importance degree of the signal strength relative to the network quality, and the higher the weight is, the higher the importance degree of the signal strength relative to the network quality is; the weight corresponding to the transmission quality score can be used to indicate the importance degree of the data retransmission rate relative to the network quality, and the higher the weight is, the higher the importance degree of the data retransmission rate relative to the network quality is.
In the embodiment of the application, by setting the weight corresponding to the signal quality score or the weight corresponding to the transmission quality score, the importance degree of the signal strength and the data retransmission rate relative to the network quality can be adjusted according to actual needs, which is beneficial to improving the accuracy of network quality evaluation.
In this embodiment of the present application, the weights corresponding to the signal quality score and the transmission quality score may be preset fixed standard values, or may be adjusted in real time according to the detected signal strength or data retransmission rate of the first wireless access point.
Optionally, the weight corresponding to the signal quality score may be determined according to a signal attenuation rate of the signal strength of the first wireless access point within a preset time interval.
The terminal device may detect a signal decay rate of the signal strength of the first wireless access point within a preset time interval. The terminal device may detect the signal strength of the first wireless access point at the start time of the preset time interval, and detect the signal strength of the first wireless access point at the end time of the preset time interval. When the signal strength detected at the termination time is smaller than the signal strength detected at the start time, the signal attenuation rate of the signal strength of the first wireless access point in the preset time interval may be determined according to the change value of the signal strength of the first wireless access point detected at the start time and the termination time, respectively, and the preset time interval. Or, the terminal device may detect the signal strength of the first wireless access point multiple times according to a certain frequency within a preset time interval, and identify any two times of detection of signal attenuation from the multiple detected signal strengths; any two detections of the presence of signal attenuation may refer to a later detected signal strength in time being less than a previously detected signal strength. And determining the signal attenuation rate between the two detections according to the change value of the signal strength obtained by the two detections and the time interval between the two detections, so as to obtain a plurality of signal attenuation rates in a preset time interval, and taking the average value of the plurality of signal attenuation rates as the signal attenuation rate of the signal strength of the first wireless access point in the preset time interval.
In this embodiment, after determining the first signal quality score corresponding to the target signal strength interval and the first transmission quality score corresponding to the target retransmission rate interval, the terminal device may determine a weight corresponding to the signal quality score according to the signal attenuation rate, determine a second signal quality score according to the weight corresponding to the signal quality score and the first signal quality score, and determine the network quality corresponding to the first radio access point according to the second signal quality score and the first transmission quality score.
In embodiments of the present application, the rate of signal attenuation may be used to assist in identifying conditions that cause wireless signal attenuation. When the signal attenuation rate is small, the wireless signal attenuation may be caused by an increase in the distance between the terminal device and the first wireless access point; when the signal attenuation rate is large, the wireless signal attenuation may be caused by the antenna of the terminal device being shielded. Therefore, the weight corresponding to the signal quality score is adjusted through the signal attenuation rate, the importance degree of the signal strength relative to the network quality can be adjusted according to different conditions causing the wireless signal attenuation, and the evaluation on the network quality is more accurate.
Alternatively, a "rate-weight" correspondence between the signal attenuation rate and the weight corresponding to the signal quality score may be preset. The corresponding relationship may be a positive correlation or a negative correlation, and is not limited specifically.
Or, the first attenuation rate threshold may also be set with reference to a signal attenuation rate caused by the antenna of the terminal device being blocked; and when the signal attenuation rate of the detected signal strength of the first wireless access point is greater than the first attenuation rate threshold value, reducing the weight corresponding to the signal quality score, so that the importance degree of the signal strength relative to the network quality can be reduced when the antenna of the terminal equipment is shielded. The antenna is blocked for occasional anomalies that may cause a large drop in signal strength, but may be eliminated in a short time. If the network is switched when the antenna is shielded, the network switching may be too frequent, which may easily cause an abnormal application program (such as a game disconnection) in use of the network, and adversely affect the network experience of the user. Therefore, the importance degree of reducing the signal strength relative to the network quality when the antenna of the terminal equipment is shielded is reduced, and the inconvenience brought to the user by frequent switching of the wireless network can be avoided as much as possible.
450. Switching connection from the first wireless access point to the second wireless access point when the network quality is below a network quality threshold.
In an embodiment of the application, the network quality of the second wireless access point is higher than the network quality of the first wireless access point.
In this embodiment, as an optional implementation manner, after detecting a signal attenuation rate of the signal strength of the first wireless access point within a preset time interval, if the detected signal attenuation rate is greater than the second attenuation rate threshold, the terminal device may also keep the connection between the terminal device and the first wireless access point, so as to further avoid inconvenience brought to a user by frequent switching of a wireless network.
The second attenuation rate threshold may also be set with reference to a signal attenuation rate caused by the antenna of the terminal device being blocked, and the second attenuation rate threshold may be the same as the first attenuation rate threshold, or may be greater than the first attenuation rate threshold, which is not limited specifically. For example, if the second attenuation rate threshold is greater than the first attenuation rate threshold, when the signal attenuation rate of the first wireless access point is greater than the first attenuation rate threshold but less than the second attenuation rate threshold, the network quality of the first wireless access point is still determined according to the frequency band, the signal strength and the data retransmission rate, and the connected wireless access point is switched when the determined network quality is low, but the importance degree of the signal strength relative to the network quality is reduced when the network quality is determined; and when the signal attenuation rate of the first wireless access point is greater than the second attenuation rate threshold, maintaining the connection of the terminal device with the first wireless access point even if the network quality is determined to be below the network quality threshold.
In the embodiment of the application, the corresponding signal strength interval is determined through the frequency band where the first wireless access point is located, and the influence of the signal strength on the network quality evaluation can be adjusted according to different frequency bands where the first wireless access point is located. The method comprises the steps of identifying a target signal intensity interval where the signal intensity of a first wireless access point is located, identifying a target retransmission rate interval where the data retransmission rate of the first wireless access point is located, determining the network quality according to the target signal intensity interval and the target retransmission rate interval, quantifying the evaluation process of the network quality, fusing a frequency band, the signal intensity and the data retransmission rate to improve the accuracy of network quality evaluation, timely switching the wireless access point accessed by the terminal equipment when the network quality is determined to be low, and improving the efficiency of data transmission.
Referring to fig. 6, fig. 6 is a schematic flowchart of another network handover method disclosed in the embodiment of the present application. The network switching method may be applied to the terminal device described above, and as shown in fig. 6, the network switching method may include:
610. and determining a first corresponding relation between the signal strength and the signal quality score according to the frequency band of the first wireless access point currently accessed by the terminal equipment.
In the embodiment of the present application, the first corresponding relationship may be a positive correlation relationship or a negative correlation relationship, and is not limited specifically. The first correspondence relationship may be a linear relationship or a nonlinear relationship. For example, when the first correspondence is a linear positive correlation, the first correspondence is a direct proportional relationship. In addition, different frequency bands may correspond to different first corresponding relationships, or may correspond to the same first corresponding relationship, which is not limited specifically. When different frequency bands correspond to different first corresponding relations, the first corresponding relations can be set by referring to the throughput of the frequency bands. For example, the higher the throughput of the frequency band, the slower the change of the signal quality score in the first correspondence relationship.
620. And determining a third signal quality score corresponding to the signal strength of the first wireless access point according to the signal strength of the first wireless access point and the first corresponding relation.
In this embodiment, the signal strength of the first wireless access point is substituted into the first corresponding relationship, so as to obtain a corresponding third signal quality score.
630. And determining a second transmission quality score corresponding to the data retransmission rate of the first wireless access point according to a second corresponding relation between the data retransmission rate and the transmission quality score.
In this embodiment of the application, the second corresponding relationship may be preset, may be a positive correlation, a negative correlation, a linear relationship, or a non-linear relationship, and is not particularly limited.
640. And determining the network quality corresponding to the first wireless access point according to the third signal quality score and the second transmission quality score.
In this embodiment of the present application, the network quality corresponding to the first wireless access point may be obtained by subtracting the third signal quality score from the initial score and subtracting the second transmission quality score, or the network quality corresponding to the first wireless access point may be determined according to a sum of the third signal quality score and the second transmission quality score, and optionally, when the first corresponding relationship is a negative correlation relationship and the second corresponding relationship is a positive correlation relationship, the network quality may be determined by using a difference calculation method; when the first corresponding relation is in a negative correlation relation and the second corresponding relation is in a positive correlation relation, the network quality can be determined in a summing mode.
650. Switching connection from the first wireless access point to the second wireless access point when the network quality is below a network quality threshold.
In an embodiment of the application, the network quality of the second wireless access point is higher than the network quality of the first wireless access point.
As an optional implementation manner, in this embodiment of the application, after the step 640 is performed to determine the network quality corresponding to the first wireless access point, a signal attenuation rate of the signal strength of the first wireless access point within a preset time interval may also be detected, and when the detected signal attenuation rate is greater than a second attenuation rate threshold, the terminal device and the first wireless access point are kept connected, so as to avoid inconvenience to the user caused by frequent switching of the wireless network.
In the embodiment of the application, by setting the first corresponding relationship between the signal strength and the signal quality score and setting the second corresponding relationship between the data retransmission rate and the transmission quality score, the change of the signal strength can be directly hooked with the change of the signal quality score, and the change of the data retransmission rate can be directly hooked with the change of the transmission quality score, so that the change of the network quality signal strength and the data retransmission rate can be directly reflected on the corresponding scores during the evaluation, and the network quality can be accurately evaluated. And after the network quality is determined to be lower than the network quality threshold value, the second wireless access point is switched and connected, so that the wireless access point accessed by the terminal equipment can be switched in time, and the data transmission efficiency is improved.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a network switching device according to an embodiment of the present disclosure. The network switching device can be applied to terminal equipment. As shown in fig. 7, the communication control apparatus 700 may include: a detection unit 710 and a switching unit 720.
A detecting unit 710, configured to detect a network quality of a first wireless access point currently accessed by a terminal device; the network quality is determined by the frequency band of the first wireless access point, the signal strength of the first wireless access point and the data retransmission rate;
a switching unit 720, configured to switch connection from the first wireless access point to a second wireless access point when the network quality is lower than the network quality threshold, where the network quality of the second wireless access point is higher than the network quality of the first wireless access point.
As an optional implementation manner, in this embodiment of the application, the detecting unit 710 may be configured to determine at least two signal strength intervals corresponding to a frequency band in which a first currently accessed wireless access point is located;
and determining a target signal strength interval in which the signal strength of the first wireless access point is located in at least two signal strength intervals; determining a target retransmission rate interval in which the data retransmission rate of the first wireless access point is located in at least two data retransmission rate intervals; and determining the network quality of the first wireless access point according to the target signal strength interval and the target retransmission rate interval.
As an optional implementation manner, in the embodiment of the present application, each signal strength interval may correspond to one signal quality score; each data retransmission rate interval may correspond to a transmission quality score. The detecting unit 710 may be configured to determine a network quality corresponding to the first radio access point according to the first signal quality score corresponding to the target signal strength interval and the first transmission quality score corresponding to the target retransmission rate interval.
As an optional implementation manner, in the present application example, the signal quality score may be in a negative correlation with the boundary value of the signal strength interval; the transmission quality score may be positively correlated with a boundary value of the data retransmission rate interval. The detecting unit 710 may be configured to subtract the first signal quality score corresponding to the target signal strength interval from the initial score, and subtract the first transmission quality score corresponding to the target retransmission rate interval from the initial score, to obtain the network quality corresponding to the first radio access point.
As an optional implementation manner, in this embodiment, the detecting unit 710 may be configured to detect a signal attenuation rate of the signal strength of the first wireless access point within a preset time interval; determining the weight corresponding to the signal quality score according to the signal attenuation rate; determining a second signal quality score according to the weight corresponding to the signal quality score and the first signal quality score corresponding to the target signal strength interval; and determining the network quality corresponding to the first wireless access point according to the second signal quality value and the first transmission quality value corresponding to the target retransmission rate interval.
As an optional implementation manner, in this embodiment, the detecting unit 710 may decrease the weight corresponding to the signal quality score when the signal attenuation rate is greater than the first attenuation rate threshold.
As an optional implementation manner, in this embodiment of the application, the detecting unit 710 may determine a first corresponding relationship between the signal strength and the signal quality score according to a frequency band in which a first wireless access point currently accessed by the terminal device is located; determining a third signal quality score corresponding to the signal strength of the first wireless access point according to the signal strength of the first wireless access point and the first corresponding relation; determining a second transmission quality score corresponding to the data retransmission rate of the first wireless access point according to a second corresponding relation between the data retransmission rate and the transmission quality score; and determining the network quality corresponding to the first wireless access point according to the third signal quality score and the second transmission quality score.
As an optional implementation manner, in this embodiment, the switching unit 720 may be further configured to detect a signal attenuation rate of the signal strength of the first wireless access point within a preset time interval after the network quality is lower than the network quality threshold; and when the signal attenuation rate is larger than the second attenuation rate threshold value, the connection between the terminal equipment and the first wireless access point is maintained.
In the embodiment of the application, the network switching device can evaluate the network quality through the frequency band, the signal strength and the data retransmission rate, and the accuracy of evaluating the network quality through multiple dimensions is higher. In addition, when the network switching device detects that the network quality of the currently accessed first wireless access point is lower than the network quality threshold value, the network switching device switches and connects to a second wireless access point with higher network quality, so that the wireless access points accessed by the terminal equipment can be switched in time, the data transmission efficiency is improved, the problem of too high switching frequency caused by blind network switching can be reduced, the stability of the network is maintained, and the network experience provided for users can be improved.
Referring to fig. 8, fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure. As shown in fig. 8, the terminal apparatus 800 may include: memory 810, wireless communication module 820, processor 830, and the like. Those skilled in the art will appreciate that the terminal device configuration shown in fig. 8 does not constitute a limitation of the terminal device, and that the terminal device may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.
The memory 810 may be used to store software programs and modules, and the processor 830 may execute various functional applications of the terminal device and data processing by operating the software programs and modules stored in the memory 810. The memory 810 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 a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the terminal device, and the like. Further, the memory 810 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 wireless communication module 820 may provide a solution for wireless communication applied to the terminal device 800, including Wireless Local Area Networks (WLANs), such as Wi-Fi networks, bluetooth (BT), global Navigation Satellite Systems (GNSS), frequency Modulation (FM), near Field Communication (NFC), infrared (IR), and the like. The wireless communication module 820 may be one or more devices integrating at least one communication processing module. The terminal device 800 can establish a communication connection with the wireless access point through the wireless communication module 820, thereby accessing to a network provided by the wireless access point and performing data transmission with the wireless access point after accessing to the network.
The processor 830 is a control center of the terminal device, connects various parts of the entire terminal device using various interfaces and lines, performs various functions of the terminal device and processes data by operating or executing software programs and/or modules stored in the memory 810 and calling data stored in the memory 810, thereby integrally monitoring the terminal device. Optionally, processor 830 may include one or more processing units; preferably, the processor 830 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 830.
Although not shown, the terminal device 800 may further include a camera, a bluetooth module, and the like, which are not described in detail herein.
In one embodiment, computer programs stored in the memory 810, when executed by the processor 830, cause the processor 830 to implement the methods as described in the embodiments above.
The embodiment of the application discloses a computer readable storage medium, which stores a computer program, wherein the computer program is executed by a processor to realize the method described in the embodiments.
Embodiments of the present application disclose a computer program product comprising a non-transitory computer readable storage medium storing a computer program, and the computer program, when executed by a processor, implements the method as described in the embodiments above.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above may be implemented by a computer program, which may be stored in a non-volatile computer readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), or the like.
Any reference to memory, storage, database, or other medium as 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 DRAM (SLDRAM), rambus (Rambus) direct RAM (RDRAM), direct bused dynamic RAM (DRDRAM), and Rambus Dynamic RAM (RDRAM).
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Those skilled in the art should also appreciate that the embodiments described in this specification are all alternative embodiments and that the acts and modules involved are not necessarily required for this application.
In various embodiments of the present application, it should be understood that the sequence numbers of the above-mentioned processes do not imply a necessary order of execution, and the order of execution of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
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 units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated units, if implemented as software functional units and sold or used as a stand-alone product, may be stored in a computer accessible memory. Based on such understanding, the technical solutions of the present application, which essentially or partly contribute to the prior art, or all or part of the technical solutions, may be embodied in the form of a software product, which is stored in a memory and includes several requests for causing a computer device (which may be a personal computer, a server, or a network device, etc., and may specifically be a processor in the computer device) to execute some or all of the steps of the above methods of the embodiments of the present application.
The network switching method, apparatus, terminal device and computer storage medium disclosed in the embodiments of the present application are described in detail above, and specific examples are applied in the present application to explain the principles and embodiments of the present application. Meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. A method for network handover, comprising:
determining at least two signal strength intervals corresponding to a frequency band where a first wireless access point which is accessed currently is located; the signal intensity intervals corresponding to different frequency bands are different, and the higher the frequency band is, the smaller the number of the signal intensity intervals corresponding to the higher frequency band is;
determining a target signal strength interval in which the signal strength of the first wireless access point is located in the at least two signal strength intervals;
determining a target retransmission rate interval in which the data retransmission rate of the first wireless access point is located in at least two data retransmission rate intervals;
determining the network quality of the first wireless access point according to the target signal strength interval and the target retransmission rate interval;
and when the network quality is lower than a network quality threshold value, switching to connect to a second wireless access point from the first wireless access point, wherein the network quality of the second wireless access point is higher than that of the first wireless access point.
2. The method of claim 1, wherein each of said signal strength intervals corresponds to a signal quality score; each data retransmission rate interval corresponds to a transmission quality score;
and determining the network quality of the first wireless access point according to the target signal strength interval and the target retransmission rate interval, including:
and determining the network quality corresponding to the first wireless access point according to the first signal quality score corresponding to the target signal strength interval and the first transmission quality score corresponding to the target retransmission rate interval.
3. The method according to claim 2, wherein the signal quality score is inversely related to the boundary value of the signal strength interval; the transmission quality score and the boundary value of the data retransmission rate interval are in positive correlation;
and determining the network quality corresponding to the first radio access point according to the first signal quality score corresponding to the target signal strength interval and the first transmission quality score corresponding to the target retransmission rate interval, including:
and subtracting a first signal quality score corresponding to the target signal strength interval from the initial score, and subtracting a first transmission quality score corresponding to the target retransmission rate interval to obtain the network quality corresponding to the first wireless access point.
4. The method of claim 2, wherein the determining the network quality corresponding to the first radio access point according to the first signal quality score corresponding to the target signal strength interval and the first transmission quality score corresponding to the target retransmission rate interval comprises:
detecting a signal attenuation rate of a signal strength of a first wireless access point within a preset time interval;
determining the weight corresponding to the signal quality score according to the signal attenuation rate;
determining a second signal quality score according to the weight corresponding to the signal quality score and the first signal quality score corresponding to the target signal strength interval;
and determining the network quality corresponding to the first wireless access point according to the second signal quality score and the first transmission quality score corresponding to the target retransmission rate interval.
5. The method of claim 4, wherein determining the weight corresponding to the signal quality score according to the signal decay rate comprises:
and when the signal attenuation rate is greater than a first attenuation rate threshold value, reducing the weight corresponding to the signal quality score.
6. The method of claim 1, wherein detecting the network quality of the first wireless access point currently accessed by the terminal device comprises:
determining a first corresponding relation between signal strength and a signal quality score according to a frequency band where a first wireless access point which is accessed currently is located;
determining a third signal quality score corresponding to the signal strength of the first wireless access point according to the signal strength of the first wireless access point and the first corresponding relation;
determining a second transmission quality score corresponding to the data retransmission rate of the first wireless access point according to a second corresponding relation between the data retransmission rate and the transmission quality score;
and determining the network quality corresponding to the first wireless access point according to the third signal quality score and the second transmission quality score.
7. The method of any of claims 1 to 3 or 6, wherein after determining that the network quality is below a network quality threshold, the method further comprises:
detecting a signal attenuation rate of a signal strength of a first wireless access point within a preset time interval;
and when the signal attenuation rate is larger than a second attenuation rate threshold value, maintaining the connection of the terminal equipment and the first wireless access point.
8. A network switching device applied to a terminal device is characterized in that the device comprises:
the device comprises a detection unit, a processing unit and a processing unit, wherein the detection unit is used for determining at least two signal intensity intervals corresponding to a frequency band where a first wireless access point which is accessed currently is located; and determining a target signal strength interval in which the signal strength of the first wireless access point is located in at least two signal strength intervals; the signal intensity intervals corresponding to different frequency bands are different, and the higher the frequency band is, the smaller the number of the signal intensity intervals corresponding to the higher frequency band is;
the detection unit is further configured to determine, in at least two data retransmission rate intervals, a target retransmission rate interval in which the data retransmission rate of the first wireless access point is located; determining the network quality of the first wireless access point according to the target signal intensity interval and the target retransmission rate interval;
and the switching unit is used for switching to connect to a second wireless access point from the first wireless access point when the network quality is lower than a network quality threshold value, wherein the network quality of the second wireless access point is higher than that of the first wireless access point.
9. A terminal device comprising a memory and a processor, the memory having stored thereon a computer program which, when executed by the processor, causes the processor to carry out the method of any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method according to any one of claims 1 to 7.
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