CN107046700B - Method and device for predicting base station switching of mobile terminal - Google Patents
Method and device for predicting base station switching of mobile terminal Download PDFInfo
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Abstract
The invention discloses a method and a device for predicting base station switching of a mobile terminal, which comprises the following steps: the method comprises the steps that the positioning position of a mobile terminal is obtained through an obtaining module, formed moving track data is recorded, the moving direction of the mobile terminal is obtained according to the recorded moving track data, a calculating module respectively calculates the similarity between the moving direction of the mobile terminal and the connecting line direction of the mobile terminal and each base station in an area, and a forecasting module determines the base station in the connecting line direction corresponding to the similarity meeting a preset threshold value as a pre-switching base station when the obtained similarity meets the preset threshold value, so that resources can be prepared for a user in advance, the switching time delay of a service base station is avoided, and the efficient and stable service quality of the user is guaranteed.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for predicting a mobile terminal to switch a base station.
Background
At present, with the popularization of various intelligent terminals and the explosive growth of future wireless data services, in some hot spot areas, for example: in movie theaters, shopping malls, exhibition halls and the like, a great deal of business needs often appear, and Small stations (Small cells) are introduced to be deployed in the mobile hotspot areas to improve the capacity of the whole network, namely, the current Ultra-dense networks (UDN).
In the prior art, in a user-level cell of a super-dense network, the number of users is substantially equal to the number of sites, the sites may be Small sites or hot spots (Hotspot), and due to the randomness of Small cell/Hotspot site distribution, most of the existing user mobility prediction schemes mainly consider a mobility prediction method based on user movement history, markov chain, user direction/signal strength and the like, and predict sites accessed by users in the future according to information such as user historical motion parameters, transition probability matrix, received signal strength and the like.
However, in the prior art, generally, the prediction is performed under the condition that a station is static, and a mobile station in a super-dense network scene is faced, which may result in high computational complexity and be not beneficial to engineering implementation, so how to predict a behavior trajectory of a user using a mobile terminal in the super-dense network scene, prepare resources for the user in advance, avoid service station transition delay, and ensure efficient and stable service quality of the user is an urgent problem to be solved.
Disclosure of Invention
In order to solve the technical problem, the invention provides a method and a device for predicting a mobile terminal to switch a base station, which can predict the moving track of the mobile terminal and determine the base stations which can be switched in an area, thereby preparing resources for a user in advance, avoiding the conversion delay of a service base station and further ensuring the efficient and stable service quality of the user.
(supplement was made after claims were determined).
The method and the device for predicting the base station switching of the mobile terminal provided by the embodiment of the invention comprise the following steps: the system comprises an acquisition module, a calculation module and a prediction determination module, wherein the acquisition module is used for acquiring the positioning position of the mobile terminal and recording formed movement track data, the movement direction of the mobile terminal is obtained according to the recorded movement track data, the calculation module is used for calculating the similarity between the movement direction of the mobile terminal and the connection direction of the mobile terminal and each base station in an area respectively, and the prediction module is used for determining the base station in the connection direction corresponding to the similarity meeting a preset threshold value as a pre-switching base station when the obtained similarity meets the preset threshold value, so that resources can be prepared for a user in advance, the switching delay of a service base station is avoided, and the efficient and stable service quality of the user is ensured.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a flowchart illustrating a first embodiment of a method for predicting a mobile terminal to switch a base station according to the present invention;
fig. 2 is a schematic diagram illustrating a moving direction of a first method for predicting a base station handover of a mobile terminal according to a first embodiment of the present invention;
fig. 3 is a schematic diagram of an included angle of a first method for predicting base station handover of a mobile terminal according to an embodiment of the present invention;
fig. 4 is a schematic distance diagram of a first method for predicting base station handover of a mobile terminal according to a first embodiment of the present invention;
fig. 5 is a schematic view of an application scenario of a second method for predicting base station switching of a mobile terminal according to an embodiment of the present invention;
fig. 6 is a simulation diagram of a second embodiment of a method for predicting a base station handover of a mobile terminal according to the present invention;
fig. 7 is a schematic structural diagram of a first apparatus for predicting a mobile terminal to switch a base station according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
The method related to the embodiment of the invention can be applied to a super-dense heterogeneous network, and the super-dense heterogeneous network can be based on a fifth generation mobile communication system (5G), namely a solution scheme after evolution and integration of various novel wireless access technologies and the existing wireless access technology is generally called.
The data processing center related to the embodiment of the present invention may be a management platform for enabling a mobile terminal in a super-dense heterogeneous network to access a base station, and may be a macro station, but is not limited thereto.
The mobile terminal related to the embodiment of the invention can be an intelligent terminal which needs a wireless access technology, for example: smart phones, tablets, handsets, computers, servers, etc., but not limited thereto.
The base station related to the embodiment of the invention can be a household base station meeting the requirements of household application, an enterprise-level/indoor base station meeting the requirements of small-sized or retail enterprises and an outdoor base station meeting the requirements of public place application.
The method provided by the embodiment of the invention aims to solve the technical problems that in the prior art, the mobile station in the ultra-dense heterogeneous network can predict the mobile track of the mobile terminal in the ultra-dense network scene, so that resources are prepared for a user in advance, the service station conversion delay is avoided, and the efficient and stable service quality of the user is guaranteed.
The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 1 is a flowchart illustrating a first embodiment of a method for predicting a mobile terminal to switch a base station according to the present invention. The embodiment relates to a specific process for predicting the base station handover of a mobile terminal. As shown in fig. 1, the method includes:
s101, acquiring the positioning position of the mobile terminal, recording formed movement track data, and obtaining the movement direction of the mobile terminal according to the recorded movement track data.
Specifically, under the ultra-dense network architecture, the data processing center obtains the positioning position of the mobile terminal, when monitoring that the mobile terminal reaches an area which is a preset edge area of a base station providing service for the mobile terminal, that is, when the mobile terminal needs to switch to a new base station to provide service, the range of the edge area can be set according to the actual situation, and the moving track data formed by the mobile terminal is recorded, so that the probability that the moving direction of the mobile terminal is changed greatly in the process of the user walking is relatively small due to the analysis of the moving track data of the mobile terminal used by a daily user in the process of walking, and the general user walking has certain directivity and pertinence, therefore, a certain internal relation between moving track points can be expressed by adopting a function to monitor and observe the position of the mobile terminal in practice, and recording the observation coordinate values obtained at a plurality of different positions, and giving a polynomial function which just passes through a plurality of known points on the two-dimensional plane by adopting a Lagrange interpolation method, wherein the polynomial function expression (1) is as follows:
wherein K is a coefficient, (x)0，y0)……(xn，yn) The simplified coordinate points of n +1 positions of the mobile terminal are as follows:
f(x)＝K0+K1x+K2x2+……+Knxn(2)
fig. 2 is a schematic diagram of calculating a moving direction according to a first embodiment of the method for predicting a mobile terminal to switch a base station, as shown in fig. 2, where a curve represents a moving track of the mobile terminal, and when a location position of the mobile terminal at time t is (x)t，yt) Then, the error between the predicted polynomial obtained by the lagrange interpolation method and the actual polynomial is calculated, and the calculation expression (3) is as follows:
wherein ξ ═ { a, b }, a ═ min { x ═ m }0,x1,…,xn}，b＝max{x0,x1,…,xn}.
After derivation, the calculation result is substituted into the calculation expression (2), that is, the slope of the current position of the mobile terminal can be calculated, and further, a tangent line of the current position of the mobile terminal, that is, a straight line with an arrow direction shown in fig. 2, can be obtained as the moving direction of the mobile terminal, but the invention is not limited thereto.
S102, respectively calculating the similarity between the moving direction of the mobile terminal and the connecting direction of the mobile terminal and each base station in the area.
Specifically, a base station in a circular area region can be obtained by taking the positioning position of the mobile terminal as a center of a circle according to a predetermined diameter to be used as a range for predicting a base station to be switched, the position of each base station in the region is obtained, then the positioning position of the mobile terminal is respectively connected with the position of each base station in the region, the similarity between the moving direction of the mobile terminal and the connecting direction between the positioning position of the mobile terminal and the position of each base station in the region is respectively calculated, and the similarity is used for judgment, namely the connecting direction is consistent with the moving direction, namely the base station is in the moving direction of the mobile terminal, so that the base station can be more easily predicted as a pre-switched base station.
And S103, when the obtained similarity meets a preset threshold, determining the base station in the connecting line direction corresponding to the similarity meeting the preset threshold as a pre-switching base station.
Specifically, when the similarity satisfies a predetermined threshold, that is, the higher the similarity is, the easier the handover is, which indicates that the connection direction is consistent with the moving direction, that is, the base station in the connection direction is in the moving direction of the mobile terminal, the easier the handover is performed, the threshold of the similarity may be set according to the actual situation, and the handover is performed when the similarity satisfies the predetermined threshold, where the similarity may be represented by an access probability, a distance, and the like, but not limited thereto.
The method for predicting the base station switching of the mobile terminal comprises the steps of obtaining the positioning position of the mobile terminal, recording formed moving track data, obtaining the moving direction of the mobile terminal according to the recorded moving track data, respectively calculating the similarity between the moving direction of the mobile terminal and the connecting line direction of the mobile terminal and each base station in an area, and determining the base station in the connecting line direction corresponding to the similarity meeting the preset threshold as a pre-switching base station when the obtained similarity meets the preset threshold, so that resources can be prepared for a user in advance, the switching time delay of a service base station is avoided, and the efficient and stable service quality of the user is guaranteed.
Further, on the basis of the foregoing embodiment, in step 102, calculating the similarity between the moving direction of the mobile terminal and the connection direction of the mobile terminal and each base station in the area respectively includes:
and respectively calculating an included angle between the moving direction of the mobile terminal and the connecting line direction of the mobile terminal and each base station in the area and a first access probability that the mobile terminal can be switched to each base station in the area.
Specifically, fig. 3 is a schematic diagram of calculating an included angle according to a first embodiment of the method for predicting a mobile terminal to switch a base station provided by the present invention, as shown in fig. 3, where point O represents a point in a moving direction of the mobile terminal, and then a positioning position of the mobile terminal, a base station TP1, and point O form a triangle. Therefore, the calculation expression (4) for calculating the angle between the moving direction of the mobile terminal and the direction of the connection line between the mobile terminal and the base station TP1 in the area is as follows:
wherein, the distance from the base station TP1 to the positioning position of the mobile terminal is d1The distance from the positioning position of the mobile terminal to the point O is l1Distance from point O to base station TP1 is l2，d1、l1、l2All canObtained by actual measurement.
Then, according to the included angle of each base station in the area, calculating the first access probability of the corresponding base station by a weighting method, and meeting the normalization requirement of probability calculation, wherein the specific calculation expression (5) is as follows:
wherein N is the number of base stations in the area, theta1……θNIs the included angle between the moving direction of the mobile terminal and the connecting line direction of the mobile terminal and each base station in the area, PiIs a first access probability, theta, of the ith base station in the areaiAnd the included angle is the included angle between the moving direction of the mobile terminal and the connecting direction of the mobile terminal and the ith base station in the area.
Further, on the basis of the foregoing embodiment, when the obtained similarity satisfies a predetermined threshold, determining a base station in the connection line direction corresponding to the similarity satisfying the predetermined threshold as a pre-handover base station includes:
and when the obtained first access probability meets the condition that the first access probability is larger than a preset threshold value, determining the base station in the connecting line direction corresponding to the first access probability as a pre-switching base station.
Specifically, the first access probability is obtained to satisfy that the first access probability is greater than a predetermined threshold, that is, the larger the first access probability is, the better the first access probability is, for example: the predetermined threshold is 50%, and when the first access probability is greater than 50%, the base station in the connection line direction corresponding to the first access probability meeting 50% is determined as the base station capable of being switched, and the specific predetermined threshold may be set according to an actual situation.
The first access probability is obtained by calculating the included angle between the moving direction of the mobile terminal and the connecting line direction of each base station, and then by a weighting method, so that the similarity between the connecting line direction between the position of the mobile terminal and the position of each base station in the area and the moving direction can be conveniently calculated.
Further, on the basis of the above embodiment, after calculating the similarity between the moving direction of the mobile terminal and the connection direction of the mobile terminal and each base station in the area, the method further includes:
obtaining the distance from the mobile terminal to each base station in the area, and calculating according to the distance to obtain a second access probability that the mobile terminal can be switched to each base station in the area;
and obtaining a third access probability that the mobile terminal can be switched to each base station in the area according to the first access probability and the second access probability.
Specifically, while determining the similarity through the first access probability, the distances from the mobile terminal to the base stations may also be considered, fig. 4 is a schematic diagram of distance calculation according to a first embodiment of the method for predicting a handover of a mobile terminal to a base station provided by the present invention, and as shown in fig. 4, the base stations in a coverage area with the location position of the mobile terminal as a center and a radius of R are also considered. Since the mobile terminal is inclined to access the base station closest to him without considering load and interference, the second access probability of the corresponding base station can be calculated by the calculation expression (6):
wherein N is the number of base stations in the area, d1……dNIs the distance, P, between each base station and the mobile terminal in the areaiIs a second access probability, d, of the ith base station in the areaiIs the distance between the ith base station and the mobile terminal in the area.
And simultaneously considering the two access probabilities, and then obtaining a corresponding third access probability by a weighting method according to the two access probabilities, wherein the calculation expression (7) is as follows:
wherein N is the number of base stations in the area, theta1……θNIs the included angle theta between the connecting line direction of each base station in the area and the moving direction of the mobile terminaliIs the included angle between the connecting line direction of the ith base station in the area and the moving direction of the mobile terminal, d1……dNFor the distance of each base station in the area from the mobile terminal, diIs the distance, P, between the ith base station and the mobile terminal in the areaiα is a weighting parameter with a value range larger than 1, which is the third access probability of the ith base station in the area.
Further, on the basis of the foregoing embodiment, when the obtained similarity satisfies a predetermined threshold, determining a base station in the connection line direction corresponding to the similarity satisfying the predetermined threshold as a pre-handover base station includes:
and when the third access probability meets the condition that the third access probability is larger than a preset threshold value, determining the base station in the connecting line direction corresponding to the third access probability as a pre-switching base station.
Specifically, the third access probability is obtained to satisfy that the third access probability is greater than a predetermined threshold, that is, the larger the third access probability is, the better the third access probability is, for example: the predetermined threshold is 60%, and when the third access probability is greater than 60%, the base station in the connection line direction corresponding to the third access probability meeting 60% is determined as the base station capable of being switched, and the specific predetermined threshold may be set according to an actual situation.
After an included angle between a connecting direction between the positioning position of the mobile terminal and the position of each base station in the area and the moving direction is calculated, the distance between the mobile terminal and the base stations is further considered, and then a third access probability is obtained according to the included angle and the distance and a weighting method, so that the base stations which can be switched by the mobile terminal can be predicted more accurately.
Further, on the basis of the foregoing embodiment, after respectively calculating an angle between a connection direction between the location position of the mobile terminal and the position of each base station in the area and the moving direction, the method further includes:
and if a plurality of the obtained included angles are equal, respectively obtaining the distances from the mobile terminal to the base stations in the areas corresponding to the equal included angles.
Specifically, in some cases, the included angle between the connection direction between the location position of the mobile terminal and the position of each base station in the area and the moving direction is calculated respectively, and it is found that a plurality of included angles are the same, that is, it is described that the similarity between the connection direction between the location position of the mobile terminal and the positions of the plurality of base stations in the area and the moving direction is the same, then the base stations in the connection direction corresponding to the same angle can be further determined according to the distance between the base stations and the mobile terminal, and therefore, the data processing center can obtain the distance between the base stations corresponding to the connection direction having the same angle and the mobile terminal respectively.
Further, on the basis of the foregoing embodiment, when the obtained similarity satisfies a predetermined threshold, determining a base station in the connection line direction corresponding to the similarity satisfying the predetermined threshold as a pre-handover base station includes:
and when the acquired distance is smaller than a preset threshold value, determining the base station in the connecting line direction corresponding to the distance as a pre-switching base station.
Specifically, when the distances between the base stations corresponding to the connection directions with the same angle and the mobile terminal are measured, a distance threshold may be set, for example: the predetermined distance is 100 meters, when the measured distance is less than 100 meters, it can be determined that the base station less than 100 meters can be switched, and the specific threshold value can be set according to the actual situation.
In some cases, the connection line direction between the positioning position of the mobile terminal and the positions of the plurality of base stations in the area is the same as the moving direction of the mobile terminal, and the distances between the base stations with the same angle and the mobile terminal can be further considered, so that the base stations which can be switched by the mobile terminal can be more accurately determined.
Further, on the basis of the above embodiment, the method further includes:
and determining the number threshold of the base stations which can be pre-switched by the mobile terminal according to the density of the base stations in the area.
Specifically, in an actual application scenario, it is easy to understand that the more base stations that can be determined to be switched, the greater the probability of successful switching is, and the higher the prediction accuracy is, however, the more base stations that can be switched, the more resources need to be made to these base stations, which correspondingly reduces the resource utilization rate, and therefore, we can find the threshold of the number of base stations that can be switched, which can achieve the highest prediction accuracy, according to the density of base stations in the area.
By determining the number threshold value of the mobile terminal capable of being switched to the base station, the prediction accuracy can be optimized to the maximum extent, better service can be provided for users conveniently, and the user satisfaction is improved.
Fig. 5 is a schematic application scenario diagram of a second embodiment of a method for predicting a base station handover of a mobile terminal according to the present invention, as shown in fig. 5, the method of the embodiment is as follows:
an application scenario of the second embodiment is a dense block in a typical scenario of an ultra-dense network, and is a network in which Small stations (Smallcells) and micro stations (Macro cells) coexist, where multiple Smallcells exist in one Macro cell, where deployment of the Smallcells belongs to a poisson Point Process (Poison Point Process) compliant network, and coverage ranges of the Smallcells overlap, where a red arrow in fig. 5 represents an actual moving track of a mobile terminal, and a red smallcell represents a current service TP of the mobile terminal, which represents a current access TP of a user; blue Small cells indicate a synchronization TP, which mainly plays a role in performing data synchronization on the current state of the service TP, and selects the service TP at the next time from the synchronization TPs, i.e., predicting a base station to which the mobile terminal can be handed over.
In order to avoid resource waste caused by resource reservation when a mobile terminal resides in a Small cell for a long time, the coverage area of the Small cell is divided, user mobility prediction is only needed when a user moves to the edge area of the Small cell, Tier-1 is called a non-prediction area, and Tier-2 is called a prediction area.
Step one, acquiring the position coordinates of the mobile terminal.
The outdoor scene takes OTDOA positioning as an example, the current position coordinates of the mobile terminal can be obtained and stored, the indoor scene takes fingerprint positioning as an example, the current coordinates of the mobile terminal are obtained, and the coordinate information can be stored in a macro station or a data processing center.
And step two, predicting the moving track of the mobile terminal.
And the macro station (or the data processing center) judges whether the mobile terminal needs to predict according to the positioning result of the mobile terminal. If prediction is needed, the macro station uses the position coordinates of the mobile terminal at the time t and before to fit the current moving track through a Lagrange interpolation polynomial, in addition, the specific position coordinates of TP distribution are also stored in the macro station (or a data processing center), and the macro station (or the data processing center) can consider a station set which takes the current position of the mobile terminal as the center and has the radius of R. The macro station (or the data processing center) calculates the access probability of different stations in the station set based on the direction or/and the distance, and determines the synchronous TP set according to the size of the access probability.
And step three, the macro station (or the data processing center) guides the synchronous TP set determined in the step two to carry out data synchronization and resource reservation with the current service TP of the mobile terminal.
Further, fig. 6 is a simulation diagram of a second embodiment of the method for predicting a mobile terminal to switch a base station according to the present invention, as shown in fig. 6, where the service TP is a TP to which the mobile terminal is currently connected to provide services, the synchronous TP is a plurality of TP sets selected according to the prediction result, and successful switching of the service TP means that a new service TP is included in the synchronous TP set after switching of the service TP of the mobile terminal, otherwise, the switching is unsuccessful.
The synchronous TP is a station with a high access probability selected from the prediction result, and can perform resource synchronization and resource synchronization in advanceAnd reserving, reducing the switching time delay of the mobile terminal and improving the successful switching probability. Thus, the simulation is performed in the aforementioned dense block scenario, the distribution of sites follows a PPP distribution, and we consider here a site density of 100/km each2500 pieces/km21000 pieces/km22000 pieces/km26000 pieces/km210000/km2，14000/km2The moving speed of the mobile terminal is 3m/s, and stations within 1.5 times the average distance range of the stations around the mobile terminal are considered.
From the figure, it can be seen that under the conditions of different site densities, the prediction accuracy rate rises first and then tends to be stable along with the increase of the number of the synchronous TPs, when the site density is lower, the prediction accuracy rate curve tends to be stable quickly, and when the site density is higher, the prediction accuracy rate curve tends to be stable under the condition of more synchronous TPs. We can conclude that: the number of the synchronous TPs has great influence on the prediction accuracy, but the number of the synchronous TPs has a threshold value, so that the prediction accuracy can reach higher prediction accuracy and tend to be stable in the simulation, namely under the condition of different density station distributions when the number of the synchronous TPs is 5.
In the embodiment, the positioning position of the mobile terminal is obtained, the formed movement track data is recorded, the movement track of the mobile terminal is obtained by adopting a lagrange interpolation method, the similarity between the movement direction of the mobile terminal and the connection direction of the mobile terminal and each base station in the area is respectively calculated, and when the obtained similarity meets the preset threshold, the base station in the connection direction corresponding to the similarity meeting the preset threshold is determined as the pre-switching base station, so that resources can be prepared for a user in advance, the switching delay of the service base station is avoided, and the efficient and stable service quality of the user is further ensured.
Further, fig. 7 is a schematic structural diagram of a first embodiment of an apparatus for predicting a mobile terminal to switch a base station, as shown in fig. 7, the apparatus includes: an acquisition module 10, a calculation module 20 and a prediction module 30;
the obtaining module 10 is configured to obtain a positioning position of the mobile terminal, record formed movement trajectory data, and obtain a moving direction of the mobile terminal according to the recorded movement trajectory data;
the calculating module 20 is configured to calculate similarity between the moving direction of the mobile terminal and the connection direction of the mobile terminal and each base station in the area;
the prediction module 30 is configured to determine, when the obtained similarity satisfies a predetermined threshold, a base station in the connection line direction corresponding to the similarity satisfying the predetermined threshold as a pre-handover base station.
The method and the device for predicting the base station switching of the mobile terminal provided by the embodiment of the invention comprise the following steps: the system comprises an acquisition module, a calculation module and a prediction determination module, wherein the acquisition module is used for acquiring the positioning position of the mobile terminal and recording formed movement track data, the movement direction of the mobile terminal is obtained according to the recorded movement track data, the calculation module is used for calculating the similarity between the movement direction of the mobile terminal and the connection direction of the mobile terminal and each base station in an area respectively, and the prediction module is used for determining the base station in the connection direction corresponding to the similarity meeting a preset threshold value as a pre-switching base station when the obtained similarity meets the preset threshold value, so that resources can be prepared for a user in advance, the switching delay of a service base station is avoided, and the efficient and stable service quality of the user is ensured.
Further, on the basis of the foregoing embodiment, the calculating module 20 is configured to calculate similarities between the moving direction of the mobile terminal and the connection direction of the mobile terminal and each base station in the area respectively, and includes:
the calculation module 20 is configured to calculate an included angle between a moving direction of the mobile terminal and a connection direction between the mobile terminal and each base station in the area, and a first access probability that the mobile terminal can be switched to each base station in the area.
The apparatus provided in the embodiment of the present invention may implement the method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.
Further, on the basis of the foregoing embodiment, the prediction module 30 is configured to determine, when the obtained similarity satisfies a predetermined threshold, a base station in the connection line direction corresponding to the similarity satisfying the predetermined threshold as a pre-handover base station, where the determining is to:
the prediction module 30 is configured to determine, when the obtained first access probability is greater than a predetermined threshold, a base station in a connection line direction corresponding to the first access probability as a pre-handover base station.
The apparatus provided in the embodiment of the present invention may implement the method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.
Further, on the basis of the above embodiment, after the calculating module 20 calculates the similarity between the moving direction of the mobile terminal and the connection direction of the mobile terminal and each base station in the area, the calculating module is further configured to:
respectively obtaining the distance from the mobile terminal to each base station in the area, and obtaining a second access probability that the mobile terminal can be switched to each base station in the area according to the obtained distance;
and obtaining a third access probability that the mobile terminal can be switched to each base station in the area according to the first access probability and the second access probability.
The apparatus provided in the embodiment of the present invention may implement the method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.
Further, on the basis of the foregoing embodiment, the prediction module 30 is configured to determine, when the obtained similarity satisfies a predetermined threshold, a base station in the connection line direction corresponding to the similarity satisfying the predetermined threshold as a pre-handover base station, where the determining is to:
the prediction module 30 is configured to determine, when the obtained third access probability is greater than a predetermined threshold, a base station in the connection line direction corresponding to the third access probability as a pre-handover base station.
The apparatus provided in the embodiment of the present invention may implement the method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.
Further, on the basis of the foregoing embodiment, after the calculating module 20 calculates the included angle between the moving direction of the mobile terminal and the connecting line direction of the mobile terminal and each base station in the area, the calculating module is further configured to:
and if a plurality of the obtained included angles are equal, respectively obtaining the distances from the mobile terminal to the base stations in the areas corresponding to the equal included angles.
The apparatus provided in the embodiment of the present invention may implement the method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.
Further, on the basis of the foregoing embodiment, the prediction module 30 is configured to determine, when the obtained similarity satisfies a predetermined threshold, a base station in the connection line direction corresponding to the similarity satisfying the predetermined threshold as a pre-handover base station, where the determining is to:
the prediction module 30 is configured to determine, when the obtained distance is smaller than a predetermined threshold, a base station in the connection line direction corresponding to the distance as a pre-handover base station.
The apparatus provided in the embodiment of the present invention may implement the method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.
Further, as shown in fig. 7, on the basis of the above embodiment, the method further includes: a threshold module 40;
the threshold module 40 is configured to determine a threshold of the number of base stations that can be pre-switched by the mobile terminal according to the density of base stations in the area.
The apparatus provided in the embodiment of the present invention may implement the method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (16)
1. A method for predicting a mobile terminal to switch base stations, the method comprising:
acquiring a positioning position of a mobile terminal, recording formed movement track data, and obtaining a movement direction of the mobile terminal according to the recorded movement track data;
calculating the access probability of each base station in the area according to the included angle between the moving direction of the mobile terminal and the connecting line direction of the mobile terminal and each base station in the area; or calculating the access probability of each base station in the area according to the included angle between the moving direction of the mobile terminal and the connecting line direction of the mobile terminal and each base station in the area and the distance from the mobile terminal to each base station in the area;
and when the obtained access probability meets a first preset threshold, determining the base station in the connecting line direction corresponding to the access probability meeting the first preset threshold as a pre-switching base station.
2. The method according to claim 1, wherein calculating the access probability of each base station in the area according to an angle between the moving direction of the mobile terminal and a connecting line direction of the mobile terminal and each base station in the area comprises:
and respectively calculating an included angle between the moving direction of the mobile terminal and the connecting line direction of the mobile terminal and each base station in the area and a first access probability that the mobile terminal can be switched to each base station in the area.
3. The method according to claim 2, wherein when the obtained access probability satisfies a first predetermined threshold, determining a base station in a connection direction corresponding to the access probability satisfying the first predetermined threshold as a pre-handover base station, includes:
and when the obtained first access probability is larger than a first preset threshold, determining the base station in the connecting line direction corresponding to the first access probability as a pre-switching base station.
4. The method according to claim 1, wherein calculating the access probability of each base station in the area according to an angle between the moving direction of the mobile terminal and a connecting line direction between the mobile terminal and each base station in the area and a distance from the mobile terminal to each base station in the area comprises:
respectively calculating an included angle between the moving direction of the mobile terminal and the connecting line direction of the mobile terminal and each base station in the area and a first access probability that the mobile terminal can be switched to each base station in the area;
respectively obtaining the distance from the mobile terminal to each base station in the area, and obtaining a second access probability that the mobile terminal can be switched to each base station in the area according to the obtained distance;
and obtaining a third access probability that the mobile terminal can be switched to each base station in the area according to the first access probability and the second access probability.
5. The method according to claim 4, wherein when the obtained access probability satisfies a first predetermined threshold, determining the base station in the connection direction corresponding to the access probability satisfying the first predetermined threshold as a pre-handover base station, includes:
and when the third access probability is greater than a first preset threshold, determining the base station in the connecting line direction corresponding to the third access probability as a pre-switching base station.
6. The method according to claim 2, further comprising, after calculating the angle between the moving direction of the mobile terminal and the connecting line direction of the mobile terminal and each base station in the area, respectively:
and if a plurality of the obtained included angles are equal, respectively obtaining the distances from the mobile terminal to the base stations in the areas corresponding to the equal included angles.
7. The method according to claim 6, wherein after the distances from the mobile terminals to the base stations in the areas corresponding to the equal included angles are respectively obtained, the method further comprises:
and when the acquired distance is smaller than a second preset threshold, determining the base station in the connecting line direction corresponding to the distance as a pre-switching base station.
8. The method of any one of claims 1-7, further comprising:
and determining the number threshold of the base stations which can be pre-switched by the mobile terminal according to the density of the base stations in the area.
9. An apparatus for predicting a handover of a mobile terminal to a base station, the apparatus comprising: the device comprises an acquisition module, a calculation module and a prediction module;
the acquisition module is used for acquiring the positioning position of the mobile terminal, recording formed movement track data and obtaining the movement direction of the mobile terminal according to the recorded movement track data;
the calculation module is used for calculating an included angle of the access probability of each base station in the area according to the moving direction of the mobile terminal and the connecting line direction of the mobile terminal and each base station in the area; or calculating the access probability of each base station in the area according to the included angle between the moving direction of the mobile terminal and the connecting line direction of the mobile terminal and each base station in the area and the distance between the mobile terminal and each base station in the area;
and the prediction module is used for determining the base station in the connecting line direction corresponding to the access probability meeting the first preset threshold as the pre-switching base station when the obtained access probability meets the first preset threshold.
10. The apparatus according to claim 9, wherein the calculating module is configured to calculate the access probability of each base station in the area according to an included angle between the moving direction of the mobile terminal and a connection direction between the mobile terminal and each base station in the area, and includes:
the calculation module is used for calculating an included angle between the moving direction of the mobile terminal and the connecting line direction of the mobile terminal and each base station in the area and a first access probability that the mobile terminal can be switched to each base station in the area respectively.
11. The apparatus according to claim 10, wherein the predicting module is configured to determine, when the obtained access probability satisfies a first predetermined threshold, a base station in a line direction corresponding to the access probability satisfying the first predetermined threshold as a pre-handover base station, where the determining is to:
the prediction module is configured to determine, when the obtained first access probability is greater than a first predetermined threshold, a base station in a connection line direction corresponding to the first access probability as a pre-handover base station.
12. The apparatus of claim 10, wherein the calculating module is configured to calculate the access probability of each base station in the area according to an included angle between the moving direction of the mobile terminal and a connecting line direction between the mobile terminal and each base station in the area and a distance between the mobile terminal and each base station in the area, and includes:
respectively obtaining the distance from the mobile terminal to each base station in the area, and obtaining a second access probability that the mobile terminal can be switched to each base station in the area according to the obtained distance;
and obtaining a third access probability that the mobile terminal can be switched to each base station in the area according to the first access probability and the second access probability.
13. The apparatus according to claim 12, wherein the predicting module is configured to determine, when the obtained access probability satisfies a first predetermined threshold, a base station in a connection direction corresponding to the probability satisfying the first predetermined threshold as a pre-handover base station, where the determining is:
the prediction module is configured to determine, when the obtained third access probability is greater than a first predetermined threshold, a base station in a connection line direction corresponding to the third access probability as a pre-handover base station.
14. The apparatus of claim 10, wherein the calculating module, after respectively calculating the included angles between the moving direction of the mobile terminal and the connecting line direction of the mobile terminal and each base station in the area, is further configured to:
and if a plurality of the obtained included angles are equal, respectively obtaining the distances from the mobile terminal to the base stations in the areas corresponding to the equal included angles.
15. The apparatus of claim 14, wherein the prediction module is further configured to:
and after the distances from the mobile terminal to the base stations in the area corresponding to the equal included angles are respectively obtained, when the obtained distances are smaller than a second preset threshold, determining the base stations in the connecting line direction corresponding to the distances as pre-switching base stations.
16. The apparatus of any one of claims 9-15, further comprising: a threshold module;
the threshold module is used for determining the number threshold of the base stations which can be pre-switched by the mobile terminal according to the density of the base stations in the area.
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| CN201610082011.8A CN107046700B (en) | 2016-02-05 | 2016-02-05 | Method and device for predicting base station switching of mobile terminal |
| PCT/CN2017/072735 WO2017133636A1 (en) | 2016-02-05 | 2017-01-26 | Method and apparatus for predicting base station switching of a mobile terminal |
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| CN201610082011.8A CN107046700B (en) | 2016-02-05 | 2016-02-05 | Method and device for predicting base station switching of mobile terminal |
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| CN107466015A (en) * | 2017-09-23 | 2017-12-12 | 东莞市腾盛软件科技有限公司 | Access control method and Related product |
| CN109874111B (en) * | 2017-12-05 | 2022-04-12 | 中兴通讯股份有限公司 | Scheduling method, method and device for sending information and storage medium |
| CN108174425A (en) * | 2018-01-04 | 2018-06-15 | 维沃移动通信有限公司 | A kind of method for switching network and mobile terminal |
| CN108764951B (en) * | 2018-03-23 | 2021-01-12 | 广州杰赛科技股份有限公司 | User similarity obtaining method and device, equipment and storage medium |
| CN110139219A (en) * | 2018-03-28 | 2019-08-16 | 杨铭域 | Wisdom 5G network system |
| CN110572765A (en) * | 2018-05-17 | 2019-12-13 | 大唐移动通信设备有限公司 | cell switching method and system |
| CN110662289B (en) * | 2018-06-28 | 2021-01-15 | 中国电信股份有限公司 | Mobile terminal positioning method, device and system and computer readable storage medium |
| CN109842887B (en) * | 2019-03-06 | 2021-10-29 | 南京邮电大学 | Resource mapping method for ultra-dense scene considering user mobility |
| US20220225192A1 (en) * | 2019-05-08 | 2022-07-14 | Beijing Xiaomi Mobile Software Co., Ltd. | Cell handover method and apparatus, handover configuration method and apparatus, and user equipment |
| CN110167059B (en) * | 2019-05-22 | 2020-07-21 | 电子科技大学 | Base station traffic prediction method under edge calculation scene |
| CN111132248A (en) * | 2019-12-12 | 2020-05-08 | 中国联合网络通信集团有限公司 | Data transmission method and device |
| CN114513824B (en) * | 2020-11-16 | 2023-03-21 | 中国移动通信有限公司研究院 | Communication platform switching method and related equipment |
| CN113438696B (en) * | 2021-06-22 | 2022-09-13 | 咪咕互动娱乐有限公司 | Mobile terminal switching method, device, equipment and storage medium |
| CN113923594B (en) * | 2021-10-12 | 2023-10-03 | 中国人民解放军国防科技大学 | Weather distinguishing method based on time division long term evolution network |
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| CN107046700A (en) | 2017-08-15 |
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