WO2018072423A1

WO2018072423A1 - Network handover method, device, terminal, network server, and data storage medium

Info

Publication number: WO2018072423A1
Application number: PCT/CN2017/081691
Authority: WO
Inventors: 张磊
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-10-21
Filing date: 2017-04-24
Publication date: 2018-04-26
Also published as: CN107979859A

Abstract

The embodiments of the invention disclose a network handover method, device, terminal, network server, and data storage medium. The method comprises: performing a scan to obtain network parameter information of available networks, wherein the network parameter information comprises receiving signal strength and an available bandwidth; obtaining a precomputed function of a data rate and the receiving signal strength and the available bandwidth of each of the available networks; sorting, according to the network parameter information and the function of the data rate and the receiving signal strength and the available bandwidth of each of the available networks, the available networks; and when a data rate of a network connected to a terminal is less than a preconfigured threshold, determining, according to the sorted available networks, a target handover network, and handing over the terminal to the target handover network.

Description

Network switching method, device, terminal, network server and storage medium

Cross-reference to related applications

The present application is filed on the basis of the Chinese Patent Application No. No. No. No. No. No. No. No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No

Technical field

The present invention relates to the field of communications technologies, and in particular, to a network switching method, apparatus, terminal, network server, and storage medium.

Background technique

With the rapid development of mobile communication technology and computer networks, the current network is a wireless heterogeneous network composed of a mobile data network and a WLAN (Wireless Local Area Networks). 4G network based on TDD-LTE (Time Division Duplexing-Long Term Evolution) and FDD-LTE (Frequency Division Duplexing-Long Term Evolution) technology, with wide coverage It provides a high data transfer rate with an uplink rate of up to 50 Mbps and a downstream rate of up to 150 Mbps. However, the tariff is relatively expensive; the wireless LAN based on the IEEE802.11 protocol can provide sufficient bandwidth for wireless multimedia applications, but the limited coverage of the WLAN causes the mobile terminal to frequently switch between the cellular network and different WLANs.

Among them, the switching delay of the WLAN reaches several hundred milliseconds or even longer. At the same time, the switching between the networks causes a sudden change in the data rate, which greatly affects the user's QoS (Quality of Service) requirements.

Summary of the invention

The embodiment of the present invention is to provide a network switching method, a device, a terminal, a network server, and a storage medium, which are used to solve the problem of a sudden change in data rate and a sudden change in data rate when switching between networks in the prior art.

In order to solve the above technical problem, an embodiment of the present invention provides a network switching method, which is applied to a terminal, and includes:

Scanning to obtain network parameter information of an available network, where the network parameter information includes: received signal strength and available bandwidth;

Obtaining a pre-statisticed data rate of each of the available networks as a function of received signal strength and available bandwidth;

Sorting the available networks according to network parameter information of each of the available networks and a functional relationship between the data rate and the received signal strength and available bandwidth;

When the data rate of the network connected to the terminal is lower than a preset threshold, the target switching network is determined from the available networks after the sorting is completed, and the terminal is switched to the target switching network.

In an embodiment, the step of obtaining a pre-statistically obtained data rate of each of the available networks as a function of received signal strength and available bandwidth includes:

Sending, by the network accessed by the terminal, a request message for acquiring a function relationship between a data rate of each of the available networks and a received signal strength and an available bandwidth to a preset network server;

Receiving a function relationship between a data rate of each of the available networks returned by the preset network server and a received signal strength and an available bandwidth;

The function relationship is established by the preset network server according to the network parameter information of the access network connected to each terminal and reported by the terminal through the learning and simulation of the neural network.

In an embodiment, the network parameter information and data according to each of the available networks The steps of sorting the available networks as a function of the rate and received signal strength, available bandwidth, include:

Calculating, according to the network parameter information of each of the available networks and the relationship between the data rate and the received signal strength and the available bandwidth, respectively, in the connection direction of the access point of the terminal and each of the available networks. a speed component and a data rate for each of the available networks;

The available networks are ordered by a preset ranking algorithm based on the received signal strength, the velocity component, and the data rate.

In an embodiment, the calculating, according to the network parameter information of each of the available networks, and the relationship between the data rate and the received signal strength and the available bandwidth, calculating the access of the terminal to each of the available networks. The steps of the velocity component in the direction of the line connection include:

And according to the received signal strength of each of the available networks, a velocity component in a connection direction of the terminal and an access point of each of the available networks is separately calculated by an autocorrelation function algorithm.

In an embodiment, the step of calculating the data rate of each of the available networks according to the network parameter information of each of the available networks and the data rate as a function of the received signal strength and the available bandwidth includes:

A data rate for each of the available networks is calculated based on received signal strength, available bandwidth, and the functional relationship of each of the available networks.

In an embodiment, the method further includes:

The network parameter information of the access network currently connected to the terminal is reported to the preset network server.

The embodiment of the invention further provides a network switching device, including:

a first acquiring module, configured to scan to obtain network parameter information of an available network, where the network parameter information includes: a received signal strength and an available bandwidth;

a second acquiring module, configured to obtain a pre-statistically obtained function relationship between a data rate of each of the available networks and a received signal strength and an available bandwidth;

a sorting module configured to sort the available networks according to network parameter information of each of the available networks and a functional relationship between the data rate and the received signal strength and available bandwidth;

And a switching module configured to: when the data rate of the network connected to the terminal is lower than a preset threshold, determine a target switching network from the available networks that have been sorted, and switch the terminal to the target switching network.

In an embodiment, the second obtaining module comprises:

a sending unit, configured to send, by using a network accessed by the terminal, a request message for acquiring a function relationship between a data rate of each of the available networks and a received signal strength and an available bandwidth to a preset network server;

a receiving unit, configured to receive a function relationship between a data rate of each of the available networks returned by the preset network server and a received signal strength and an available bandwidth; wherein the function relationship is pre-determined by the preset network server According to the network parameter information of the access network connected to each terminal and reported by the terminal, the learning simulation of the neural network is established.

In an embodiment, the ordering module comprises:

a calculating unit, configured to calculate, according to network parameter information of each of the available networks and a function relationship between a data rate and a received signal strength and an available bandwidth, respectively, obtaining an access point of the terminal and each of the available networks The velocity component in the direction of the connection and the data rate of each of the available networks;

And a sorting unit configured to sort the available networks by a preset sorting algorithm according to the received signal strength, the speed component, and the data rate.

The embodiment of the invention further provides a terminal, which comprises the network switching device as described in this embodiment.

The embodiment of the invention further provides a network switching method, which is applied to a network server, and includes:

Obtaining, by the at least one terminal, network parameter information of an access network connected to each of the terminals;

Using the network parameter information as a sample, establishing the number of the access network through a neural network According to the relationship between the rate and the received signal strength and available bandwidth.

In an embodiment, after the network parameter information is used as a sample, and the relationship between the data rate of the access network and the received signal strength and the available bandwidth is established through a neural network, the method further includes:

Receiving a request message sent by a terminal for obtaining a function relationship between a data rate of an available network and a received signal strength and an available bandwidth, where the available network includes the access network;

And returning, according to the request message, a functional relationship between the data rate of the available network and the received signal strength and available bandwidth to the terminal.

a third acquiring module, configured to acquire network parameter information of an access network that is reported by the at least one terminal and connected to each of the terminals;

The relationship establishing module is configured to use the network parameter information as a sample, and establish, by using a neural network, a functional relationship between a data rate of the access network and a received signal strength and an available bandwidth.

In an embodiment, the apparatus further includes:

a receiving module, configured to receive a request message sent by a terminal for acquiring a function relationship between a data rate of the available network and a received signal strength and an available bandwidth, where the available network includes the access network;

And returning to the module, configured to return, according to the request message, a functional relationship between the data rate of the available network and the received signal strength and available bandwidth to the terminal.

The embodiment of the invention further provides a network server, which comprises the network switching device as described in this embodiment.

The embodiment of the present invention further provides a storage medium, where the computer executable instructions are used to execute the network switching method applied to the terminal according to the embodiment of the present invention.

The embodiment of the invention further provides a storage medium, wherein the storage medium stores a computer The executable instruction is used to execute the network switching method applied to the network server according to the embodiment of the present invention.

In the above solution of the embodiment of the present invention, the network server establishes a functional relationship between the data rate of each network and the received signal strength and available bandwidth according to the network parameter information of the network connected to the terminal and reported by the terminal, so that the terminal When the network switching is required, the data rate of each available network calculated by the function relationship, and the moving speed component of the terminal to each available network calculated according to the obtained network parameter information of each available network may be used as a handover judgment basis. Quickly and accurately determine the target switching network in the available network and perform network switching, thereby improving the sudden change of data rate during network switching, ensuring the data rate of the terminal, reducing the switching delay, reducing frequent switching, and improving the user experience.

DRAWINGS

1 is a schematic diagram of basic steps of a network switching method according to an embodiment of the present invention;

2 is a schematic structural diagram of a structure of a network switching apparatus according to an embodiment of the present invention;

3 is a second schematic diagram of basic steps of a network switching method according to an embodiment of the present invention;

4 is a block diagram of a neural network according to an embodiment of the present invention;

FIG. 5 is a second schematic structural diagram of a network switching apparatus according to an embodiment of the present invention.

Detailed ways

The technical problems, the technical solutions, and the advantages of the present invention will be more clearly described in the following description.

The present invention provides a network switching method for improving the data rate when the network is switched, and the data rate of the terminal is improved, and the switching delay is reduced. Reduce frequent switching and improve user experience.

First embodiment

As shown in FIG. 1 , an embodiment of the present invention provides a network switching method, which is applied to a terminal and a packet. include:

Step 11: Scan to obtain network parameter information of an available network, where the network parameter information includes: received signal strength and available bandwidth.

Here, the network parameter information of the available network obtained by the scanning may further include: a network identifier for identifying the available network.

Here, the available bandwidth can be delivered to the terminal through the router of each available network. Specifically, the current available bandwidth of the network can be broadcast to each terminal in the coverage of the network by configuring the software function of the router.

Step 12: Obtain a pre-statistically obtained function relationship between the data rate of each of the available networks and the received signal strength and available bandwidth.

Here, in particular, a functional relationship between the data rate of the available network and the received signal strength and the available bandwidth is a mapping relationship between the three pre-established by the network server.

Step 13. Sort the available networks according to network parameter information of each of the available networks and a functional relationship between the data rate and the received signal strength and available bandwidth.

Here, according to the network parameter information of each available network and the function relationship between the data rate and the received signal strength and the available bandwidth, the parameters required for each available network in the sorting are calculated, and the available network is determined by a preset sorting algorithm. put in order.

The parameters required for the available network to be sorted include the received signal strength, the predicted data rate of each available network calculated by the functional relationship, and the moving speed component of the terminal to each available network obtained through the network parameter information.

Step 14: When the data rate of the network currently connected to the terminal is lower than a preset threshold, determine a target switching network from the available networks that have been sorted, and switch the terminal to the target switching network.

Here, the target switching network is a network that can be preferentially switched after comprehensive evaluation by a preset sorting algorithm in the available network.

The network switching method provided by the embodiment of the present invention can obtain the function relationship between the data rate of each available network and the received signal strength and the available bandwidth in advance, and when the terminal needs network switching, the function can be calculated through the function relationship. The data rate of each available network, and the moving speed component of the terminal to each available network calculated according to the obtained network parameter information of each available network as a basis for handover determination, quickly and accurately determine the target switching network in the available network, and perform network Switching, thereby improving the sudden change of data rate during network switching, ensuring the data rate of the terminal, reducing the handover delay, reducing frequent handovers, and improving the user experience.

As an embodiment, step 12 in the embodiment of the present invention may further include:

Step 121: Send, by the network accessed by the terminal, a request message for acquiring a function relationship between a data rate of each of the available networks and a received signal strength and an available bandwidth to a preset network server.

Step 122: Receive a function relationship between a data rate of each of the available networks returned by the preset network server and a received signal strength and an available bandwidth.

It should be noted that, in addition to obtaining a functional relationship between the data rate R of each of the available networks and the received signal strength (RSS) and the available bandwidth B, the terminal may also acquire the required access to each available network. Access password.

Here, the function relationship is specifically a mapping relationship, that is, R=f (RSS, B).

As an embodiment, the step 13 in the embodiment of the present invention may further include:

Step 131: Calculate, according to the network parameter information of each of the available networks and the function relationship between the data rate and the received signal strength and the available bandwidth, respectively, the connection between the terminal and each of the available network access points. The velocity component in the direction and the data rate of each of the available networks.

Here, the function relationship, the RSS of each available network obtained by scanning, the available bandwidth, and the calculated velocity component in the connection direction of the terminal and the access point of each available network may be recorded in the available network set by the terminal. In the data table, the data table of the available network may be referred to as an available network maintenance table, and the correspondence in the table is as shown in the following table.

SSID

Password

Current RSS

R=f(RSS,B)

Velocity component

The SSID is the network identifier, the password is the password required to access the available network, the RSS is the received signal strength of the currently available network, and the speed component is the speed component in the direction of the connection between the terminal and the access point of the available network.

Step 132: Sort the available networks by using a preset sorting algorithm according to the received signal strength, the speed component, and the data rate.

Here, according to the relevant available network information in the maintenance table set on the terminal, by inputting the RSS and the available bandwidth of the available network into the mapping relationship R=f (RSS, B), the current data rate of the available network is obtained, and obtained by calculation. The velocity component in the direction of the connection between the terminal and the access point of the available network, and then sorting the available networks by a preset sorting algorithm.

Here, the preset sorting algorithm multiplies the normalized values of the three parameters by the corresponding weighting by reading the received signal strength of the available network in the maintenance table, the speed component of the terminal, and the current data rate of each available network. The factor is substituted into the set sorting formula, and the output result is the switching priority order generated after comprehensive evaluation of the network performance of each available network, that is, the output result values are sorted from large to small.

Here, for the sake of generality, the above three parameters are respectively normalized, that is, the above three parameters are respectively substituted into the following:

First, the normalization function of RSS is:

Where R(x) represents the signal power received by the terminal at x; _Rth is the threshold of the received power; if the signal power is below the threshold, the value is 0; _Rmax is the maximum value of the received power .

Second, the normalization function of the data rate is:

p _rate =Rate(i)/Rate _max

Third, the normalization function of the velocity component is:

Here, V(x) indicates that V is a variable related to the position coordinates of the terminal.

Next, it is the determination of the weighting factor in the set sorting formula. It should be noted that the weighting factor of the embodiment of the present invention may dynamically change with the change of each parameter, thereby reflecting the relationship between the parameters in real time; and based on the data rate of the predicted network, the data of each available network. The weighting factor for this important parameter of the rate is large in order to highlight this parameter.

Specifically, the weighting factor of the present invention is defined as:

Where σ _i is the standard deviation of the normalized variables of each parameter of each available network; σ _RSS is the standard deviation of the received signal strength of each available network; σ _Rate is the standard deviation of the data rate of each available network; σ _v is each The standard deviation of the velocity component in the direction of the connection of the access points of the available network.

Finally, substitute the sorting formula:

Where k is the available network sequence number; p _i,k is the normalized value of the ith parameter in network k; w _i is the weight of the ith parameter of the kth network, and Σw _i =1.

Here, after processing according to the above algorithm, the obtained result of sorting the available networks can be written into a sorted list.

Here, the step 131 may further include:

Step 1311: Calculate, according to the received signal strength of each of the available networks, a velocity component in a connection direction between the terminal and an access point of each of the available networks by using an autocorrelation function algorithm.

Here, the calculation of the velocity component of the embodiment of the present invention calculates the OFDM (Orthogonal Frequency Division Multiplexing) symbol cyclic prefix by using the signal received from the access point (AP) of each available network. The autocorrelation function is used to obtain the maximum Doppler shift of the received signal, and then the Doppler shift formula is used to obtain the velocity component values in the direction of the connection between the terminal and the access points of the available networks.

Here, the AP for the terminal approaching or deviating from the available network can be judged by calculating the difference between the two RSSs before and after.

Specifically, the RSS detection time interval is set to t _c , and if RSS(t)−RSS(tt _c )>0, it is determined that the terminal is close to the AP of the available network; if RSS(t)−RSS(tt _c )<0, Then judge the terminal away from the AP of the available network.

It should be noted here that since both 4G and WLAN networks employ OFDM technology, a guard interval is inserted between adjacent OFDM symbols in the OFDM system. With this feature, the autocorrelation function is calculated in two identical parts OFDM symbols can be obtained the maximum Doppler shift f _d.

The symbol interval is NT, and the received OFDM symbol normalized autocorrelation function is:

In the case of enough samples, the following statistical relationship can be obtained:

Formula by Doppler shift:

Variants get:

Where v _m cos θ is a velocity component of the terminal moving speed in the direction of the connection between the terminal and the access point of the available network.

It should be noted that v _c should be the electromagnetic wave propagation speed, f _c is the original signal carrier frequency, and f _r is the received signal frequency.

The maximum Doppler shift f _d obtained from the OFDM symbol autocorrelation function is the absolute value of the difference between f _c and f _r , that is, f _d =|f _c -f _r |, f _c -f _r =±f _d . When the terminal is far away from the base station, f _c -f _r =f _d , when the terminal is close to the base station, f _c -f _r = -f _d .

θ is the angle between the direction in which the terminal moves and the direction in which the terminal is connected to the AP.

Here, the speed component in the connection direction of the terminal and the access point of each of the available networks is separately calculated by the above algorithm.

Step 1312: Calculate a data rate of each of the available networks according to a received signal strength, an available bandwidth, and the function relationship of each of the available networks.

It should be noted here that the received signal strength and available bandwidth of the available network are the current received signal strength of the available network and the currently available bandwidth.

Here, the received signal strength and the available bandwidth of each available network obtained by the scanning are respectively substituted into the mapping relationship corresponding to each available network, and the data rate of each available network is obtained.

Here, the data rate of each available network is the predicted data rate.

It should be noted that, because the overall performance of the wireless network cannot be fully reflected based on the received signal strength, and the received signal strength does not necessarily indicate that the data rate of the network is fast, the embodiment of the present invention considers the ordering of the available networks. The current data rate of each available network, combined with the moving direction and speed components of the terminal, can achieve the purpose of selecting an appropriate switchable network, reducing frequent switching, and ensuring the data rate of the terminal.

As an implementation manner, the network switching method of the embodiment of the present invention may further include:

Step 15: Report network parameter information of the access network connected to the terminal to the preset network server.

It should be noted that the reporting of the network parameter information of the network accessed by the terminal in this step may provide a sample basis for the function relationship between the data rate of the preset network server establishing the network and the received signal strength and the available bandwidth.

Second embodiment

As shown in FIG. 2, an embodiment of the present invention further provides a network switching apparatus, which is applied to a terminal, and includes:

The first obtaining module 21 is configured to scan to obtain network parameter information of an available network, where the network parameter information includes: a received signal strength and an available bandwidth;

The second obtaining module 22 is configured to obtain the number of each of the available networks that are pre-statistically obtained. According to the relationship between the rate and the received signal strength and available bandwidth;

The sorting module 23 is configured to sort the available networks according to network parameter information of each of the available networks and a functional relationship between the data rate and the received signal strength and available bandwidth;

The switching module 24 is configured to: when the data rate of the network connected to the terminal is lower than a preset threshold, determine a target switching network from the available networks that have been sorted, and switch the terminal to the target switching network.

Specifically, the second obtaining module 22 in the embodiment of the present invention may further include:

a sending unit, configured to send, by using a network currently accessed by the terminal, a request message for acquiring a function relationship between a data rate of each of the available networks and a received signal strength and an available bandwidth to a preset network server;

a receiving unit, configured to receive a function relationship between a data rate of each of the available networks returned by the preset network server and a received signal strength and an available bandwidth;

The function relationship is established by the preset network server according to the network parameter information of the access network connected to each terminal and reported by each terminal, through learning and simulation of the neural network.

Specifically, the ordering module 23 in the embodiment of the present invention may further include:

Here, the calculating unit may be further configured to: separately calculate, according to the received signal strength of each of the available networks, a connection direction of the access point of the terminal and each of the available networks by using an autocorrelation function algorithm The speed component.

The computing unit may be further configured to: calculate a data rate of each of the available networks according to a received signal strength, an available bandwidth, and the functional relationship of each of the available networks.

Specifically, the network switching apparatus of the embodiment of the present invention may further include:

The information reporting module 25 is configured to report the network parameter information of the access network currently connected to the terminal to the preset network server.

In the embodiment of the present invention, the first obtaining module 21, the second obtaining module 22, the sorting module 23, and the switching module 24 in the device, and the submodules in each module may be used in the device in practical applications. CPU (Central Processing Unit), DSP (Digital Signal Processor), MCU (Microcontroller Unit) or FPGA (Field-Programmable Gate Array).

The network switching apparatus provided by the embodiment of the present invention can obtain the function relationship between the data rate of each available network and the received signal strength and the available bandwidth in advance, and when the terminal needs network switching, the function can be calculated through the function relationship. The data rate of each available network, and the moving speed component of the terminal to each available network calculated according to the obtained network parameter information of each available network as a basis for handover determination, quickly and accurately determine the target switching network in the available network, and perform network Switching, thereby improving the sudden change of data rate during network switching, ensuring the data rate of the terminal, reducing the handover delay, reducing frequent handovers, and improving the user experience.

The embodiment of the invention further provides a terminal, comprising the network switching device as described above.

Third embodiment

As shown in FIG. 3, an embodiment of the present invention further provides a network switching method, which is applied to a network server, and includes:

Step 31: Acquire network parameter information of an access network that is reported by at least one terminal and connected to each of the terminals.

It should be noted that the network parameter information of the access network connected to the terminal may include: a network identifier used to identify the network, a password when the terminal accesses the network, a data rate of the network, and a network. Information such as the bandwidth and the received signal strength of the current network.

Step 32: The network parameter information is used as a sample, and a relationship between a data rate of the access network and a received signal strength and an available bandwidth is established through a neural network.

Here, the network server constructs a large amount of data reported by each terminal.

Specifically, the network server classifies the reported network parameter information according to the SSID of the network, and fills in the network parameter information of the network accessed by the terminal reported by each terminal, including: received signal strength, network Available bandwidth and data rate, etc.

Further, a large amount of received signal strength, available bandwidth and data rate are used as sample input neural networks for learning and simulation, and a mapping relationship between the data rate R of the network and the RSS and the available bandwidth B is established, that is, R=f(RSS, B) And write to the corresponding network table, here, the block diagram of the neural network is shown in Figure 4.

Step 33: Receive a request message sent by a terminal to obtain a function relationship between a data rate of an available network and a received signal strength and an available bandwidth, where the available network includes the access network.

It should be noted that when the network server receives the request message sent by the terminal, the network server searches for the data rate and the received signal strength of the available network indicated in the request message from the pre-established table according to the network identifier of the at least one available network. A functional relationship between available bandwidth.

Step 34: Return, according to the request message, a functional relationship between the data rate of the available network and the received signal strength and available bandwidth to the terminal.

According to the network switching method provided by the embodiment of the present invention, the network server establishes a functional relationship between the data rate of each network and the received signal strength and available bandwidth according to the network parameter information of the network connected to the terminal and the network connected to the terminal, so that When the terminal needs network switching, the terminal may calculate the data rate of each available network calculated by the function relationship, and the moving speed component of the terminal to each available network calculated according to the obtained network parameter information of each available network. Switching the judgment basis, quickly and accurately determining the target switching network in the available network, and performing network switching, thereby improving the sudden change of the data rate during the network switching, ensuring the data rate of the terminal, reducing the handover delay, reducing the frequent handover, and improving the user experience.

Fourth embodiment

As shown in FIG. 5, an embodiment of the present invention further provides a network switching apparatus, which is applied to a network server, and includes:

The third obtaining module 41 is configured to acquire network parameter information of the access network that is connected to each terminal by the at least one terminal;

The relationship establishing module 42 is configured to use the network parameter information as a sample to establish a functional relationship between the data rate of the access network and the received signal strength and available bandwidth through the neural network.

It should be noted that the network parameter information of the access network connected to the terminal may include: a network identifier used to identify the network, a password when the terminal accesses the network, a data rate of the network, a network bandwidth, and a received signal strength of the current network. And other information.

Further, a large amount of received signal strength, available bandwidth and data rate are used as sample input neural networks for learning and simulation, and a mapping relationship between the data rate R of the network and the RSS and the available bandwidth B is established, that is, R=f(RSS, B) And write to the corresponding network table.

The receiving module 43 is configured to receive a request message sent by a terminal for acquiring a function relationship between a data rate of the available network and a received signal strength and an available bandwidth, where the available network includes the access network;

The returning module 44 is configured to return, according to the request message, a functional relationship between the data rate of the available network and the received signal strength and available bandwidth to the terminal.

It should be noted that, when receiving the request message sent by the terminal, the network server searches for the data rate and the received signal strength of the available network indicated in the request message from the pre-established table according to the network identifier of each available network, and is available. A functional relationship between bandwidths.

In the embodiment of the present invention, the relationship establishing module 42 in the device may be implemented by a CPU, a DSP, an MCU, or an FPGA in the device in an actual application; a third acquiring module 41, a receiving module 43 in the device, and The return module 44 can be implemented in a practical application by a communication module (including: a basic communication suite, an operating system, a communication module, a standardized interface, a protocol, etc.) and a transceiver antenna.

The embodiment of the invention further provides a network server, comprising the network switching device as described above.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, such as: multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, or direct coupling, or communication connection of the components shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may be electrical, mechanical or other forms. of.

The units described above as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be separately used as one unit, or two or more units may be used. The elements are integrated in one unit; the above integrated units can be implemented in the form of hardware or in the form of hardware plus software functional units.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to the program instructions. The foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing storage medium includes: a mobile storage device, a ROM (Read-Only Memory), a RAM (Random Access Memory), a magnetic disk, or an optical disk. A medium that can store program code.

Alternatively, the above-described integrated unit of the present invention may be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as a standalone product. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions. A computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention. The foregoing storage medium includes various media that can store program codes, such as a mobile storage device, a ROM, a RAM, a magnetic disk, or an optical disk.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Industrial applicability

The technical solution of the embodiment of the present invention establishes a functional relationship between the data rate of each network and the received signal strength and available bandwidth according to the network parameter information of the network connected to the terminal and reported by the at least one terminal, so that the terminal is in the When network switching is required, the data rate of each available network calculated by the function relationship can be obtained, and according to the available available networks. The moving speed component of the terminal to each available network calculated by the network parameter information is used as a handover judgment basis, and the target switching network is determined in the available network quickly and accurately, and the network switching is performed, thereby improving the sudden change of the data rate during the network switching, and ensuring the terminal. The data rate reduces switching delays, reduces frequent switching, and improves the user experience.

Claims

A network switching method is applied to a terminal, including:

Scanning to obtain network parameter information of an available network, where the network parameter information includes: received signal strength and available bandwidth;

Obtaining a pre-statisticed data rate of each of the available networks as a function of received signal strength and available bandwidth;

Sorting the available networks according to network parameter information of each of the available networks and a functional relationship between the data rate and the received signal strength and available bandwidth;

When the data rate of the network connected to the terminal is lower than a preset threshold, the target switching network is determined from the available networks after the sorting is completed, and the terminal is switched to the target switching network.
The network switching method according to claim 1, wherein the step of acquiring a pre-statistically obtained data rate of each of the available networks as a function of received signal strength and available bandwidth comprises:

Sending, by the network accessed by the terminal, a request message for acquiring a function relationship between a data rate of each of the available networks and a received signal strength and an available bandwidth to a preset network server;

Receiving a function relationship between a data rate of each of the available networks returned by the preset network server and a received signal strength and an available bandwidth;

The function relationship is established by the preset network server according to the network parameter information of the access network connected to each terminal and reported by the terminal through the learning and simulation of the neural network.
The network switching method according to claim 1, wherein said step of sorting available networks according to network parameter information of each of said available networks and a function of data rate and received signal strength, available bandwidth comprises :

According to the network parameter information of each of the available networks and the data rate and the received signal are strong Calculating a speed component in a connection direction of the access point of the terminal and each of the available networks, and a data rate of each of the available networks, respectively, as a function of a relationship between the available bandwidth and the available bandwidth;

The available networks are ordered by a preset ranking algorithm based on the received signal strength, the velocity component, and the data rate.
The network switching method according to claim 3, wherein said calculating said terminal and each according to network parameter information of each of said available networks and a functional relationship between a data rate and received signal strength and available bandwidth The step of the velocity component in the connection direction of the access point of the available network includes:

And according to the received signal strength of each of the available networks, a velocity component in a connection direction of the terminal and an access point of each of the available networks is separately calculated by an autocorrelation function algorithm.
The network switching method according to claim 3, wherein said calculating said each available network according to network parameter information of each of said available networks and a functional relationship between a data rate and received signal strength and available bandwidth The steps of the data rate include:

A data rate for each of the available networks is calculated based on received signal strength, available bandwidth, and the functional relationship of each of the available networks.
The network switching method according to claim 1, wherein the method further comprises:

The network parameter information of the access network connected to the terminal is reported to the preset network server.
A network switching device includes:

a first acquiring module, configured to scan to obtain network parameter information of an available network, where the network parameter information includes: a received signal strength and an available bandwidth;

a second acquiring module, configured to obtain a pre-statistically obtained function relationship between a data rate of each of the available networks and a received signal strength and an available bandwidth;

a sorting module configured to sort the available networks according to network parameter information of each of the available networks and a functional relationship between the data rate and the received signal strength and available bandwidth;

And a switching module configured to: when the data rate of the network connected to the terminal is lower than a preset threshold, determine a target switching network from the available networks that have been sorted, and switch the terminal to the target switching network.
The network switching device according to claim 7, wherein the second obtaining module comprises:

a sending unit, configured to send, by using a network accessed by the terminal, a request message for acquiring a function relationship between a data rate of each of the available networks and a received signal strength and an available bandwidth to a preset network server;

a receiving unit, configured to receive a function relationship between a data rate of each of the available networks returned by the preset network server and a received signal strength and an available bandwidth; wherein the function relationship is pre-determined by the preset network server According to the network parameter information of the access network connected to each terminal and reported by the terminal, the learning simulation of the neural network is established.
The network switching device according to claim 7, wherein the ordering module comprises:

a calculating unit, configured to calculate, according to network parameter information of each of the available networks and a function relationship between a data rate and a received signal strength and an available bandwidth, respectively, obtaining an access point of the terminal and each of the available networks The velocity component in the direction of the connection and the data rate of each of the available networks;

And a sorting unit configured to sort the available networks by a preset sorting algorithm according to the received signal strength, the speed component, and the data rate.
A terminal comprising the network switching device according to any one of claims 7 to 9.
A network switching method applied to a network server, including:

Obtaining, by the at least one terminal, network parameter information of an access network connected to each of the terminals;

Using the network parameter information as a sample, a functional relationship between the data rate of the access network and the received signal strength and available bandwidth is established through a neural network.
The network switching method according to claim 11, wherein the network parameter information is used as a sample, and after establishing a functional relationship between a data rate of the access network and a received signal strength and an available bandwidth through a neural network, The method further includes:

Receiving a request message sent by a terminal for obtaining a function relationship between a data rate of an available network and a received signal strength and an available bandwidth, where the available network includes the access network;

And returning, according to the request message, a functional relationship between the data rate of the available network and the received signal strength and available bandwidth to the terminal.
A network switching device includes:

a third acquiring module, configured to acquire network parameter information of an access network that is reported by the at least one terminal and connected to each of the terminals;

The relationship establishing module is configured to use the network parameter information as a sample, and establish, by using a neural network, a functional relationship between a data rate of the access network and a received signal strength and an available bandwidth.
The network switching device of claim 13, wherein the device further comprises:

a receiving module, configured to receive a request message sent by a terminal for acquiring a function relationship between a data rate of the available network and a received signal strength and an available bandwidth, where the available network includes the access network;

And returning to the module, configured to return, according to the request message, a functional relationship between the data rate of the available network and the received signal strength and available bandwidth to the terminal.
A network server comprising the network switching device according to claim 13 or 14.
A storage medium having stored therein computer executable instructions for performing the network switching method of any one of claims 1 to 6.
A storage medium storing computer executable instructions for performing the network switching method of claim 11 or 12.