CN110958606A - Roaming method, device and storage medium for mobile terminal in wireless mesh network - Google Patents
Roaming method, device and storage medium for mobile terminal in wireless mesh network Download PDFInfo
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- CN110958606A CN110958606A CN201911345257.XA CN201911345257A CN110958606A CN 110958606 A CN110958606 A CN 110958606A CN 201911345257 A CN201911345257 A CN 201911345257A CN 110958606 A CN110958606 A CN 110958606A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
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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
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
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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
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- 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
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- 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
- H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a roaming method of a mobile terminal in a wireless mesh network. The method comprises the following steps: acquiring environmental parameters, and determining the network state of the wireless mesh network according to the environmental parameters; determining a corresponding roaming switching algorithm according to the network state; acquiring behavior data of the mobile terminal, and acquiring a track set of the mobile terminal according to the behavior data; and correcting the roaming switching algorithm according to the track set, and determining the switching time of the mobile terminal. The invention also discloses a roaming device and a computer readable storage medium of the mobile terminal in the wireless mesh network. The invention can realize roaming switching of the mobile terminal in the wireless mesh network at a proper time on the premise of big data analysis.
Description
Technical Field
The present invention relates to the field of network connection technologies, and in particular, to a roaming method and apparatus for a mobile terminal in a wireless mesh network, and a computer-readable storage medium.
Background
The internet is a flat network, the routers forming the internet are on the same plane, and a mesh network formed by a plurality of paths formed among the routers is a wireless mesh network. The network has a plurality of paths to form a loop connection to form a dynamic network, and the stability is good. If one path fails, the wireless mesh network can be switched to the other path without causing network interruption, so that the wireless mesh network can provide good network service for users.
However, currently, in wireless mesh networks, there are still some problems when a user performs a roaming handover in a wireless mesh network. If the roaming switching is too sensitive, the network switching of the user is frequent, and troubles are caused to the user; if the roaming handover is too slow, network handover delay and serious disconnection can be caused, and the use experience of the user is also influenced.
Disclosure of Invention
The invention mainly aims to provide a roaming method, a roaming device and a computer readable storage medium for a mobile terminal in a wireless mesh network, aiming at realizing roaming switching of the mobile terminal in the wireless mesh network at a proper time on the premise of analyzing big data.
In order to achieve the above object, the present invention provides a roaming method for a mobile terminal in a wireless mesh network, wherein the roaming method for a mobile terminal in a wireless mesh network comprises the following steps:
acquiring environmental parameters, and determining the network state of the wireless mesh network according to the environmental parameters;
determining a corresponding roaming switching algorithm according to the network state;
acquiring behavior data of the mobile terminal, and acquiring a track set of the mobile terminal according to the behavior data;
and correcting the roaming switching algorithm according to the track set, and determining the switching time of the mobile terminal.
Optionally, the step of obtaining the behavior data of the mobile terminal and obtaining the trajectory set of the mobile terminal according to the behavior data includes:
acquiring a signal intensity vector of a mobile terminal in the wireless mesh network;
and acquiring a track set of the mobile terminal according to the signal intensity vector.
Optionally, the step of obtaining a signal strength vector of the mobile terminal in the wireless mesh network includes:
determining each signal connection point in the wireless mesh network according to the network state of the wireless mesh network;
acquiring the signal intensity of the mobile terminal and each signal connection point;
and carrying out vector combination according to the signal intensity of the mobile terminal and each signal connection point to obtain a signal intensity vector of the mobile terminal.
Optionally, the step of obtaining a trajectory set of the mobile terminal according to the signal strength vector includes:
acquiring all signal intensity vectors in a preset time period of the mobile terminal according to the signal intensity vectors;
and performing time combination according to all the signal intensity vectors to obtain a track set of the mobile terminal.
Optionally, the step of modifying the roaming handover algorithm according to the trajectory set and determining a handover opportunity of the mobile terminal includes:
determining a track set in a preset period of the mobile terminal according to the track set;
determining the track trend of the mobile terminal according to the track set in the preset period and the current position information of the mobile terminal;
and correcting the roaming switching algorithm according to the track trend, and determining the switching time of the mobile terminal.
Optionally, the step of modifying the roaming handover algorithm according to the trajectory set and determining a handover opportunity of the mobile terminal includes:
determining a track set of the mobile terminal in different position points according to the track set;
determining the optimal signal connection point of the corresponding position point according to the track set in the different position points;
and performing corresponding roaming switching on the mobile terminal at different position points according to the optimal signal connection point corresponding to the position point.
Optionally, the step of modifying the roaming handover algorithm according to the trajectory set and determining a handover opportunity of the mobile terminal includes:
acquiring historical roaming switching data of the mobile terminal;
and correcting the roaming switching algorithm according to the historical roaming switching data, and determining the switching time of the mobile terminal according to the corrected roaming switching algorithm.
Optionally, the step of modifying the roaming handover algorithm according to the trajectory set and determining a handover opportunity of the mobile terminal includes:
acquiring the service type of the mobile terminal;
and correcting the roaming switching algorithm according to the service type, and determining the switching time of the mobile terminal according to the corrected roaming switching algorithm.
In addition, to achieve the above object, the present invention further provides a roaming device for a mobile terminal in a wireless mesh network, the roaming device for a mobile terminal in a wireless mesh network comprising: a memory, a processor and a roaming program for a mobile terminal in a wireless mesh network stored on said memory and operable on said processor, said roaming program for a mobile terminal in a wireless mesh network being executed by said processor to implement the steps of the roaming method for a mobile terminal in a wireless mesh network as described above.
In addition, to achieve the above object, the present invention further provides a computer readable storage medium, which stores a roaming program of a mobile terminal in a wireless mesh network, wherein the roaming program of the mobile terminal in the wireless mesh network is executed by a processor to implement the steps of the roaming method of the mobile terminal in the wireless mesh network.
The invention provides a roaming method and device for a mobile terminal in a wireless mesh network and a computer storage medium. In the method, environmental parameters are collected, and the network state of the wireless mesh network is determined according to the environmental parameters; determining a corresponding roaming switching algorithm according to the network state; acquiring behavior data of the mobile terminal, and acquiring a track set of the mobile terminal according to the behavior data; and correcting the roaming switching algorithm according to the track set, and determining the switching time of the mobile terminal. In the above way, the invention acquires the behavior data of the mobile terminal, learns the track set obtained according to the behavior data of the mobile terminal, dynamically detects the behavior, presets the next behavior trend of the mobile terminal, dynamically adjusting the roaming switching algorithm according to factors such as predicted behavior, current state, mobile terminal characteristics and the like on the basis of the roaming switching algorithm obtained based on the environmental parameters, determining a specific roaming switching algorithm aiming at the mobile terminal based on the individual characteristics of the mobile terminal, ensuring that the mobile terminal establishes connection with the most appropriate network node according to the roaming switching algorithm to obtain the best network connection, therefore, the problems of invalid roaming, untimely roaming, unreasonable roaming and the like are avoided, the user experience of the mesh network is effectively improved, high coverage and low delay are achieved, and the network is smoothly and unsmooth to be accessed in the moving process.
Drawings
FIG. 1 is a schematic diagram of an apparatus in a hardware operating environment according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a roaming method for a mobile terminal in a wireless mesh network according to a first embodiment of the present invention;
fig. 3 is a flowchart illustrating a roaming method for a mobile terminal in a wireless mesh network according to a second embodiment of the present invention;
fig. 4 is a flowchart illustrating a roaming method for a mobile terminal in a wireless mesh network according to a third embodiment of the present invention;
fig. 5 is a flowchart illustrating a roaming method for a mobile terminal in a wireless mesh network according to a fourth embodiment of the present invention;
fig. 6 is a flowchart illustrating a roaming method for a mobile terminal in a wireless mesh network according to a fifth embodiment of the present invention;
fig. 7 is a flowchart illustrating a roaming method for a mobile terminal in a wireless mesh network according to a sixth embodiment of the present invention;
fig. 8 is a flowchart illustrating a roaming method for a mobile terminal in a wireless mesh network according to a seventh embodiment of the present invention;
fig. 9 is a flowchart illustrating an eighth embodiment of a roaming method for a mobile terminal in a wireless mesh network according to the present invention;
fig. 10 is a schematic diagram illustrating a network state of a roaming method for a mobile terminal in a wireless mesh network according to a first embodiment of the present invention;
fig. 11 is a diagram illustrating a trajectory set of a roaming method for a mobile terminal in a wireless mesh network according to a fifth embodiment of the present invention;
fig. 12 is a diagram illustrating a trajectory set of a roaming method for a mobile terminal in a wireless mesh network according to a sixth embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, fig. 1 is a schematic device structure diagram of a hardware operating environment according to an embodiment of the present invention.
The terminal of the embodiment of the invention can be a PC, and can also be a terminal device with a data processing function, such as a smart phone, a tablet computer, a portable computer and the like.
As shown in fig. 1, the terminal may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Optionally, the terminal may further include a camera, a Radio Frequency (RF) circuit, a sensor, an audio circuit, a Wi-Fi module, and the like. Such as light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor that may adjust the brightness of the display screen according to the brightness of ambient light, and a proximity sensor that may turn off the display screen and/or the backlight when the mobile terminal is moved to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally, three axes), detect the magnitude and direction of gravity when the mobile terminal is stationary, and can be used for applications (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer and tapping) and the like for recognizing the attitude of the mobile terminal; of course, the mobile terminal may also be configured with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which are not described herein again.
Those skilled in the art will appreciate that the terminal structure shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a roaming program of a mobile terminal in a wireless mesh network.
In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to invoke a roaming procedure of the mobile terminal in the wireless mesh network stored in the memory 1005 and perform the following operations:
acquiring environmental parameters, and determining the network state of the wireless mesh network according to the environmental parameters;
determining a corresponding roaming switching algorithm according to the network state;
acquiring behavior data of the mobile terminal, and acquiring a track set of the mobile terminal according to the behavior data;
and correcting the roaming switching algorithm according to the track set, and determining the switching time of the mobile terminal.
Further, the processor 1001 may call the roaming procedure of the mobile terminal in the wireless mesh network stored in the memory 1005, and further perform the following operations:
the step of obtaining the behavior data of the mobile terminal and obtaining the track set of the mobile terminal according to the behavior data comprises the following steps:
acquiring a signal intensity vector of a mobile terminal in the wireless mesh network;
and acquiring a track set of the mobile terminal according to the signal intensity vector.
Further, the processor 1001 may call the roaming procedure of the mobile terminal in the wireless mesh network stored in the memory 1005, and further perform the following operations:
the step of obtaining the signal strength vector of the mobile terminal in the wireless mesh network comprises:
determining each signal connection point in the wireless mesh network according to the network state of the wireless mesh network;
acquiring the signal intensity of the mobile terminal and each signal connection point;
and carrying out vector combination according to the signal intensity of the mobile terminal and each signal connection point to obtain a signal intensity vector of the mobile terminal.
Further, the processor 1001 may call the roaming procedure of the mobile terminal in the wireless mesh network stored in the memory 1005, and further perform the following operations:
the step of obtaining the trajectory set of the mobile terminal according to the signal strength vector comprises:
acquiring all signal intensity vectors in a preset time period of the mobile terminal according to the signal intensity vectors;
and performing time combination according to all the signal intensity vectors to obtain a track set of the mobile terminal.
Further, the processor 1001 may call the roaming procedure of the mobile terminal in the wireless mesh network stored in the memory 1005, and further perform the following operations:
the step of modifying the roaming switching algorithm according to the trajectory set and determining the switching opportunity of the mobile terminal comprises:
determining a track set in a preset period of the mobile terminal according to the track set;
determining the track trend of the mobile terminal according to the track set in the preset period and the current position information of the mobile terminal;
and correcting the roaming switching algorithm according to the track trend, and determining the switching time of the mobile terminal.
Further, the processor 1001 may call the roaming procedure of the mobile terminal in the wireless mesh network stored in the memory 1005, and further perform the following operations:
the step of modifying the roaming switching algorithm according to the trajectory set and determining the switching opportunity of the mobile terminal comprises:
determining a track set of the mobile terminal in different position points according to the track set;
determining the optimal signal connection point of the corresponding position point according to the track set in the different position points;
and performing corresponding roaming switching on the mobile terminal at different position points according to the optimal signal connection point corresponding to the position point.
Further, the processor 1001 may call the roaming procedure of the mobile terminal in the wireless mesh network stored in the memory 1005, and further perform the following operations:
the step of modifying the roaming handover algorithm according to the trajectory set and determining the handover opportunity of the mobile terminal comprises:
acquiring historical roaming switching data of the mobile terminal;
and correcting the roaming switching algorithm according to the historical roaming switching data, and determining the switching time of the mobile terminal according to the corrected roaming switching algorithm.
Further, the processor 1001 may call the roaming procedure of the mobile terminal in the wireless mesh network stored in the memory 1005, and further perform the following operations:
the step of modifying the roaming handover algorithm according to the trajectory set and determining the handover opportunity of the mobile terminal comprises:
acquiring the service type of the mobile terminal;
and correcting the roaming switching algorithm according to the service type, and determining the switching time of the mobile terminal according to the corrected roaming switching algorithm.
The specific embodiment of the roaming device of the mobile terminal in the wireless mesh network of the present invention is basically the same as the following embodiments of the roaming method of the mobile terminal in the wireless mesh network, and will not be described herein again.
Referring to fig. 2, fig. 2 is a flowchart illustrating a roaming method for a mobile terminal in a wireless mesh network according to a first embodiment of the present invention, where the roaming method for a mobile terminal in a wireless mesh network includes:
step S100, collecting environmental parameters, and determining the network state of the wireless mesh network according to the environmental parameters;
the implementation method is applied to a wireless mesh network, namely a mesh network, the mesh network is usually composed of more than 2 wireless routers, an integral network is formed among mesh networking nodes to provide network services for users, and the problems of networking caused by the fact that signal coverage is not in place in public places or offices, complex household environment, especially complex household structure, and blockage of networking caused by the fact that the users use wireless coverage with signal dead angles in large household types are solved. The mesh nodes can be connected and networked through wires such as Ethernet wires or power lines, can also be connected and networked through wireless, and can also be connected and networked through a wire and wireless mixture. In this embodiment, the environmental parameters in the mesh network are collected first, and the network state of the wireless mesh network is determined according to the environmental parameters. Specifically, the system is composed of a mesh network and a network node thereof, and a user terminal, namely a mobile terminal. The mesh node can be added into the mesh network in a wired or wireless mode, the mesh networking can be a wired mesh network, a wireless mesh network or a mixed mesh network, and if the mesh node can be added into the mesh networking through a plurality of channels, the channel with the best quality is selected. And acquiring information such as the number, the position, the distribution and the like of the network nodes in the mesh network, and determining the current network environment in the mesh network according to the information such as the number, the position, the distribution and the like of the network nodes. For example, referring to fig. 10, the network state of the entire network can be determined by acquiring the positions and the mutual position relationship of the three network nodes a, B, and C, which are 3 network nodes in fig. 10, that is, the signal connection condition of each position in the network can be determined, for example, a network in which the position 1 point can only connect to the network node a point, and a network in which the position 2 point can connect to the network node a point and the network node B point. mesh networking initiated roaming typically occurs when the mobile terminal has poor connection quality with the currently connected network node, is stuck in the internet and can establish a better connection with another network node to provide a better quality network. And the current environment state is determined by collecting the ambient environment parameters, so that the environment consistency is ensured.
Step S200, determining a corresponding roaming switching algorithm according to the network state;
after obtaining the network state, a basic roaming handover algorithm may be determined based on the determined network state, e.g. without any history or historical behavior, a theoretically most reasonable roaming handover algorithm may be determined by calculation. Namely, the roaming switching algorithm correspondingly determined through the network state is the roaming switching algorithm in an ideal state, if the adaptability of network roaming switching needs to be improved, further correction is needed, and the corrected roaming switching algorithm can be better adapted to the current network environment.
Step S300, behavior data of the mobile terminal is obtained, and a track set of the mobile terminal is obtained according to the behavior data;
and acquiring behavior data of the mobile terminal, and acquiring a track set of the mobile terminal according to the behavior data. Namely, the behavior data of the mobile terminal in the network is obtained, and the trajectory set of the mobile terminal can be determined through the behavior data of the mobile terminal at different continuous time points. Specifically, the behavior data of the mobile terminal may be determined by the connection quality between the mobile terminal and the network Node in the mesh network, the connection quality between the mobile terminal and the network Node in the mesh network may be measured by a preset algorithm of a series of related parameters in the mesh network, and the related parameters may be RSSI (Received Signal Strength Indication), channel occupancy, a condition of a connection link between the mesh nodes, a load of the mesh Node (network Node), and the like.
And step S400, correcting the roaming switching algorithm according to the track set, and determining the switching time of the mobile terminal.
After the trajectory set of the mobile terminal is obtained, the roaming switching algorithm can be modified according to the trajectory set, and the switching time of the mobile terminal is determined. Specifically, the roaming switching algorithm can be modified according to the time period dimension of the trajectory set, and the switching time of the mobile terminal is determined; the roaming switching algorithm can be corrected according to the state transition dimension of the mobile terminal, and the switching time of the mobile terminal is determined; the roaming switching algorithm can be corrected according to the dimension of the type of the mobile terminal, and the switching time of the mobile terminal is determined; but the roaming switching algorithm can be corrected according to the service type dimension of the mobile terminal to determine the switching time of the mobile terminal. Of course, the roaming handover algorithm is modified, and the handover timing of the mobile terminal can be determined based on not only these dimensions, but also other dimensions, and multiple dimensions. The behavior data of the mobile terminal is collected, the next behavior is learned and predicted, the roaming algorithm is dynamically adjusted according to the current environment condition, and the user experience of the mesh network is continuously improved.
It should be noted that a basic roaming algorithm is preset according to RSSI, channel occupancy, link conditions between mesh nodes, mesh Node load, etc., and when there is no historical learning data, roaming is performed according to the preset algorithm; or when the environmental parameters are changed greatly, such as the change of the collected stable RSSI of the mobile terminal exceeds the range, the change of the basic data of the surrounding environment exceeds the range, etc., the change of the placement position of the network node can be presumed, and the roaming is carried out according to the preset algorithm after the historical data can be removed.
The invention provides a roaming method and device for a mobile terminal in a wireless mesh network and a computer storage medium. In the method, environmental parameters are collected, and the network state of the wireless mesh network is determined according to the environmental parameters; determining a corresponding roaming switching algorithm according to the network state; acquiring behavior data of the mobile terminal, and acquiring a track set of the mobile terminal according to the behavior data; and correcting the roaming switching algorithm according to the track set, and determining the switching time of the mobile terminal. In the above way, the invention acquires the behavior data of the mobile terminal, learns the track set obtained according to the behavior data of the mobile terminal, dynamically detects the behavior, presets the next behavior trend of the mobile terminal, dynamically adjusting the roaming switching algorithm according to factors such as predicted behavior, current state, mobile terminal characteristics and the like on the basis of the roaming switching algorithm obtained based on the environmental parameters, determining a specific roaming switching algorithm aiming at the mobile terminal based on the individual characteristics of the mobile terminal, ensuring that the mobile terminal establishes connection with the most appropriate network node according to the roaming switching algorithm to obtain the best network connection, therefore, the problems of invalid roaming, untimely roaming, unreasonable roaming and the like are avoided, the user experience of the mesh network is effectively improved, high coverage and low delay are achieved, and the network is smoothly and unsmooth to be accessed in the moving process.
Referring to fig. 3, fig. 3 is a flowchart illustrating a roaming method for a mobile terminal in a wireless mesh network according to a second embodiment of the present invention.
Based on the foregoing embodiment, in this embodiment, step S300 includes:
step S310, obtaining a signal intensity vector of the mobile terminal in the wireless mesh network;
in this embodiment, a signal strength vector of the mobile terminal in the wireless mesh network is obtained. The signal strength vector may be an RSSI signal strength vector, or may be another signal strength vector. The RSSI is an important indicator of the connection quality between the mobile terminal and the currently connected network node, and therefore, the RSSI is often used as reference data for roaming of the mobile terminal.
And step S320, acquiring a track set of the mobile terminal according to the signal intensity vector.
And acquiring a track set of the mobile terminal according to the signal intensity vector. The RSSI ranging technology can be used in the fields of wireless sensor networks, indoor positioning and the like, the position is judged by the RSSI, and the error is within an acceptable range. The method can acquire and record the RSSI vector of the mobile terminal within the coverage range of the mesh networking, and then dynamically learn and predict the next behavior characteristic of the mobile terminal according to the historical record of the RSSI vector, such as the change of the RSSI vector, namely the movement of the corresponding mobile terminal in the space. The RSSI vector is similar to a multidimensional coordinate point and represents the signal strength between the mobile terminal and each mesh networking node, and different RSSI vectors represent that the mobile terminal is located at different positions, so that the track set of the mobile terminal can be determined through the change of the RSSI vectors of continuous time periods.
Referring to fig. 4, fig. 4 is a flowchart illustrating a roaming method for a mobile terminal in a wireless mesh network according to a third embodiment of the present invention.
Based on the foregoing embodiment, in this embodiment, step S310 includes:
step S311, determining each signal connection point in the wireless mesh network according to the network state of the wireless mesh network;
the wireless mesh network state determines each signal connection point in the wireless mesh network. Specifically, several network nodes, the positions and distribution relations of the network nodes, etc. in the wireless mesh network are determined according to the network state of the wireless mesh network.
Step S312, acquiring the signal intensity of the mobile terminal and each signal connection point;
after determining the respective signal attachment points in the wireless mesh network, the signal strengths of the mobile terminal and the respective signal attachment points may be further determined. Such as RSSI data for different signal connection points, respectively.
And step 313, performing vector combination according to the signal strength of the mobile terminal and each signal connection point to obtain a signal strength vector of the mobile terminal.
After the signal strength of each signal connection point is obtained, vector combination can be performed according to the signal strength of the mobile terminal and each signal connection point to obtain a mobile terminal signal strength vector. And in different positions, the signal strength of the mobile terminal is different from that of different signal connection points, and the unique position of the mobile terminal in the mesh network can be determined according to the signal strength of the mobile terminal and the different signal connection points.
Specifically, referring to fig. 10, a mesh network of 3 mesh networking nodes is taken as an example for explanation. A, B and C are 3 mesh networking nodes, RSSI vectors of the mobile terminal at 1,2,3,4,5,6 and 7 points are respectively 1(r1A, r1B, r1C), 2(r2A, r2B and r2C).. r1A represents signal strength of the mobile terminal at the network nodes 1 and A, r1B represents signal strength of the mobile terminal at the network nodes 1 and B, and r1C represents signal strength of the mobile terminal at the network nodes 1 and C. Wherein 1 can only be covered by A, 2 can be covered by A and B, 3 can be covered by A and C, and 7 can be covered by A, B and C. For point 1, only r1A is a valid value. The RSSI vector is in the coverage range of the mesh network, and one point can be accurately identified. And marking the historical passing points of the mobile terminal in the mesh network by using the RSSI vector and recording the historical passing points as historical data.
It should be further noted that, to reduce the amount of computation and memory overhead, the RSSI in the floating range may be considered the same according to the product characteristics, e.g., the range of r1A-3DB to r1A +3DB is considered the same as r 1A.
Referring to fig. 5, fig. 5 is a flowchart illustrating a roaming method for a mobile terminal in a wireless mesh network according to a fourth embodiment of the present invention.
Based on the foregoing embodiment, in this embodiment, step S320 includes:
step S321, obtaining all signal intensity vectors in a preset time period of the mobile terminal according to the signal intensity vectors;
after the signal intensity vectors are obtained, all the signal intensity vectors within a preset time period of the mobile terminal can be obtained according to the signal intensity vectors. The preset time can be one day, one hour, one week and the like, and is set according to the situation.
Step S322, time combination is carried out according to all signal intensity vectors, and a track set of the mobile terminal is obtained.
And after the signal intensity vectors are obtained, time combination is carried out according to all the signal intensity vectors to obtain a track set of the mobile terminal. Such as a set of trajectories of mobile terminals for a certain day, a set of trajectories of mobile terminals for a certain hour, a set of trajectories of mobile terminals for a certain week, etc.
Referring to fig. 6, fig. 6 is a flowchart illustrating a roaming method for a mobile terminal in a wireless mesh network according to a fifth embodiment of the present invention.
Based on the foregoing embodiment, in this embodiment, step S400 includes:
step S410, determining a track set in a preset period of the mobile terminal according to the track set;
in this embodiment, the roaming handover algorithm may be modified according to the time dimension to determine the handover timing of the mobile terminal. Specifically, a track set in a preset period of the mobile terminal is determined according to the track set. As history data learning statistics is performed by taking 1 hour as an example, referring to fig. 11, the activity trace of the mobile terminal is recorded in the set 1 from time 0 to time 1, n12 represents the number of times that the mobile terminal moves from 1 point to 2 points in this time period, and similarly, n42 represents the number of times that the mobile terminal moves from 4 points to 2 points. And the times of the effective movement of the mobile terminal is accumulated to be 1 every time.
Step S420, determining the track trend of the mobile terminal according to the track set in the preset period and the current position information of the mobile terminal;
after the track set in the preset period is obtained, the track trend of the mobile terminal is determined by utilizing a big data analysis method according to the track set in the preset period of the mobile terminal and the current position information. Specifically, the big data analysis method can be cloud data big data analysis, a predictive analysis model and the like.
And step S430, correcting the roaming switching algorithm according to the track trend, and determining the switching time of the mobile terminal.
After the track trend is determined, the roaming switching algorithm can be corrected according to the determined track trend, and the switching time of the mobile terminal is determined.
Specifically, the mobile terminal connects to the node a in the mesh at point 1, and cannot perform fast roaming and perform no redundant actions only in the coverage area of node a. To which RSSI vector to move, which RSSI vector count is incremented by 1. If moving to a new RSSI vector, the vector point is incremented.
The mobile terminal is connected with the point A at the point 2, when the mobile terminal is detected to move, the mobile terminal is predicted to move to the point 4 according to historical data, the point 2 is in the coverage range of the point A and the point B in mesh, the RSSI vector of the point 4 shows that the point 4 is out of the coverage range of the point A, and if the RSSI of the mobile terminal and the RSSI of the point B are just strengthened, the mobile terminal is triggered to roam to the point B according to the prediction. And the disconnection reconnection is prevented after 4 points. If the RSSI of the mobile terminal and the RSSI of the mobile terminal B are weakened and do not act, the preset roaming mechanism is waited to take effect, and if the mobile terminal is effective and a new RSSI vector is generated, the mobile terminal is added into the set.
The mobile terminal is connected with the point B at 4 points, 2 points and 7 points are predicted according to historical data, and 4 points are only in the coverage area of the point B and cannot perform fast roaming without performing redundant actions. To which RSSI vector to move, which RSSI vector count is incremented by 1. If moving to a new RSSI vector, the vector point is incremented.
The mobile terminal is connected with A or B at 7 points, when the mobile terminal is detected to move, the mobile terminal is predicted to move to the coverage of 6, 6 at C, and if the RSSI of the mobile terminal and the RSSI of the mobile terminal are just strengthened, the mobile terminal is triggered to roam to C. And the disconnection reconnection is prevented after 6 points. If the RSSI of the mobile terminal and the RSSI of the mobile terminal C are weakened and do not act, the preset roaming mechanism is waited to take effect, and if the mobile terminal is effective and a new RSSI vector is generated, the mobile terminal is added into the set. For example, when the mobile terminal starts moving from 7, of the collected (Δ r7A, Δ r7B, Δ r7C), Δ r7B is enhanced, roaming to 8 according to the preset roaming algorithm, and adding the RSSI vector 8 to the set 1.
Referring to fig. 7, fig. 7 is a flowchart illustrating a roaming method for a mobile terminal in a wireless mesh network according to a sixth embodiment of the present invention.
Based on the foregoing embodiment, in this embodiment, step S400 includes:
step S440, determining a track set of the mobile terminal in different position points according to the track set;
in this embodiment, the roaming handover algorithm may be further modified according to the state dimension of the location point of the mobile terminal, so as to determine the handover timing of the mobile terminal. Specifically, a track set of the mobile terminal in different position points is determined according to the track set. Such as a set of trajectories at a certain location point.
Step S450, determining the optimal signal connection point corresponding to the position point according to the track set in the different position points;
after the track sets of the mobile terminal in different position points are obtained, the optimal signal connection point corresponding to the position point can be determined according to the track sets in the different position points. Specifically, if it is determined that the mobile terminal frequently moves in the direction a at a certain point in the trajectory set of the certain point, it is determined that the optimal signal connection point moves in the reverse direction a at the certain point.
Step S460, performing corresponding roaming handover when the mobile terminal is at different location points according to the optimal signal connection point corresponding to the location point.
And performing corresponding roaming switching when the mobile terminal is at different position points according to the optimal signal connection point corresponding to the position point. Specifically, the roaming handover algorithm is modified according to the optimal signal connection point corresponding to the location point, so that the mobile terminal performs corresponding handover at a suitable location according to the modified roaming handover algorithm.
Specifically, the RSSI vectors before and after the dropped call are learned, as shown in fig. 12, if the mobile terminal is normally connected at 2 points according to the preset roaming algorithm, but a large probability of dropped call reconnection occurs at 8 points; the connection is normal at point 3, and the reconnection is probably dropped at both point 6 and point 1. The adaptability of the algorithm to these several points should be considered at this point. When the 2-point mobile terminal is connected with A, if the collected RSSI vectors (delta r2A, delta r2B and delta r2C) delta r2B are enhanced, roaming to B in advance according to a preset algorithm even if the roaming condition is not met, and preventing 8-point disconnection; when the 3-point mobile terminal is connected with A, if the collected RSSI vectors (delta r3A, delta r3B and delta r3C) delta r3C are continuously enhanced, the mobile terminal roams to C in advance according to a preset algorithm even if the roaming condition is not met, and 6-point drop is prevented.
Referring to fig. 8, fig. 8 is a flowchart illustrating a roaming method for a mobile terminal in a wireless mesh network according to a seventh embodiment of the present invention.
Based on the foregoing embodiment, in this embodiment, after step S400, the method further includes:
step S500, obtaining historical roaming switching data of the mobile terminal;
in this embodiment, historical roaming handover data of the mobile terminal may be obtained, and whether the mobile terminal is friendly or unfriendly may be determined according to the historical roaming handover data. Learning the roaming capability and roaming behavior of the mobile terminal, dividing the mobile terminal into a friendly type and an unfriendly type, defining the mobile terminal which is subjected to switching operation according to the indication of the mesh network so as to roam as the friendly type, and defining the mobile terminal which is not subjected to switching operation according to the indication of the mesh network so as to roam as the unfriendly type.
Step S600, the roaming switching algorithm is corrected according to the historical roaming switching data, and the switching time of the mobile terminal is determined according to the corrected roaming switching algorithm.
And modifying the roaming switching algorithm according to the historical roaming switching data, determining the switching time of the mobile terminal according to the modified roaming switching algorithm, and particularly dynamically adjusting the roaming algorithm to adapt to the roaming of different types of mobile terminals according to the types of the mobile terminals, such as unfriendly mobile terminals, so as to ensure the smooth service of the mobile terminals.
Referring to fig. 9, fig. 9 is a flowchart illustrating an eighth embodiment of a roaming method for a mobile terminal in a wireless mesh network according to the present invention.
Based on the foregoing embodiment, in this embodiment, after step S400, the method further includes:
step S700, acquiring the service type of the mobile terminal;
in this embodiment, the service types of the mobile terminals may also be obtained, and the service types of each mobile terminal may be learned, such as allowing delayed video, website access, QQ chat, wechat, and the like, and not allowing delayed games, video calls, voice calls, and the like.
Step S800, the roaming switching algorithm is corrected according to the service type, and the switching time of the mobile terminal is determined according to the corrected roaming switching algorithm.
After the service type of the mobile terminal is determined, the roaming switching algorithm is corrected according to the service type, the switching time of the mobile terminal is determined according to the corrected roaming switching algorithm, and the service which does not allow time delay/low time delay is guaranteed to be normal preferentially.
In addition, the embodiment of the invention also provides a computer readable storage medium.
The computer readable storage medium of the present invention stores a roaming program of a mobile terminal in a wireless mesh network, and the roaming program of the mobile terminal in the wireless mesh network realizes the steps of the roaming method of the mobile terminal in the wireless mesh network as described above when executed by a processor.
The method implemented when the roaming program of the mobile terminal in the wireless mesh network running on the processor is executed may refer to each embodiment of the roaming method of the mobile terminal in the wireless mesh network of the present invention, and is not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A roaming method for a mobile terminal in a wireless mesh network, characterized in that the roaming method comprises the steps of:
acquiring environmental parameters, and determining the network state of the wireless mesh network according to the environmental parameters;
determining a corresponding roaming switching algorithm according to the network state;
acquiring behavior data of the mobile terminal, and acquiring a track set of the mobile terminal according to the behavior data;
and correcting the roaming switching algorithm according to the track set, and determining the switching time of the mobile terminal.
2. The roaming method of mobile terminals in wireless mesh network of claim 1, wherein the step of obtaining behavior data of the mobile terminals, obtaining a set of trajectories of the mobile terminals based on the behavior data comprises:
acquiring a signal intensity vector of a mobile terminal in the wireless mesh network;
and acquiring a track set of the mobile terminal according to the signal intensity vector.
3. The roaming method of mobile terminals in a wireless mesh network of claim 2, wherein the step of obtaining a signal strength vector of a mobile terminal in the wireless mesh network comprises:
determining each signal connection point in the wireless mesh network according to the network state of the wireless mesh network;
acquiring the signal intensity of the mobile terminal and each signal connection point;
and carrying out vector combination according to the signal intensity of the mobile terminal and each signal connection point to obtain a signal intensity vector of the mobile terminal.
4. The roaming method of mobile terminals in wireless mesh network of claim 2, wherein the step of obtaining the set of trajectories of mobile terminals based on the signal strength vector comprises:
acquiring all signal intensity vectors in a preset time period of the mobile terminal according to the signal intensity vectors;
and performing time combination according to all the signal intensity vectors to obtain a track set of the mobile terminal.
5. The roaming method of mobile terminals in wireless mesh network of claim 1, wherein the step of modifying the roaming handover algorithm based on the set of trajectories and determining the handover timing of a mobile terminal comprises:
determining a track set in a preset period of the mobile terminal according to the track set;
determining the track trend of the mobile terminal according to the track set in the preset period and the current position information of the mobile terminal;
and correcting the roaming switching algorithm according to the track trend, and determining the switching time of the mobile terminal.
6. The roaming method of mobile terminals in wireless mesh network of claim 1, wherein the step of modifying the roaming handover algorithm based on the set of trajectories and determining the handover timing of a mobile terminal further comprises:
determining a track set of the mobile terminal in different position points according to the track set;
determining the optimal signal connection point of the corresponding position point according to the track set in the different position points;
and performing corresponding roaming switching on the mobile terminal at different position points according to the optimal signal connection point corresponding to the position point.
7. The roaming method of mobile terminals in wireless mesh network of claim 1, wherein the step of modifying the roaming handover algorithm based on the set of trajectories and determining the handover timing of the mobile terminal comprises:
acquiring historical roaming switching data of the mobile terminal;
and correcting the roaming switching algorithm according to the historical roaming switching data, and determining the switching time of the mobile terminal according to the corrected roaming switching algorithm.
8. The roaming method of mobile terminals in wireless mesh network of claim 1, wherein the step of modifying the roaming handover algorithm based on the set of trajectories and determining the handover timing of the mobile terminal comprises:
acquiring the service type of the mobile terminal;
and correcting the roaming switching algorithm according to the service type, and determining the switching time of the mobile terminal according to the corrected roaming switching algorithm.
9. A roaming apparatus for a mobile terminal in a wireless mesh network, the roaming apparatus for a mobile terminal in a wireless mesh network comprising: a memory, a processor and a roaming program for a mobile terminal in a wireless mesh network stored on said memory and operable on said processor, said roaming program for a mobile terminal in a wireless mesh network implementing the steps of the roaming method for a mobile terminal in a wireless mesh network as claimed in any one of claims 1 to 8 when executed by said processor.
10. A computer-readable storage medium, wherein the computer-readable storage medium has stored thereon a roaming program for a mobile terminal in a wireless mesh network, and wherein the roaming program for the mobile terminal in the wireless mesh network, when executed by a processor, implements the steps of the roaming method for the mobile terminal in the wireless mesh network as recited in any one of claims 1 to 8.
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