CN109309956B - Position locating method, device, equipment and computer readable storage medium - Google Patents
Position locating method, device, equipment and computer readable storage medium Download PDFInfo
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- CN109309956B CN109309956B CN201710630576.XA CN201710630576A CN109309956B CN 109309956 B CN109309956 B CN 109309956B CN 201710630576 A CN201710630576 A CN 201710630576A CN 109309956 B CN109309956 B CN 109309956B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
Abstract
The invention provides a position positioning method, a position positioning device, position positioning equipment and a computer readable storage medium, and relates to the technical field of communication. The position locating method comprises the following steps: acquiring cell switching information of a test terminal on a traffic route at different movement speeds, wherein the cell switching information comprises a switching point position, a movement direction and a switching cell; establishing a cell switching information base according to the cell switching information and the movement speed corresponding to the cell switching information; establishing a speed model of the terminal to be tested based on the acquired motion direction and switching cell of the terminal to be tested during adjacent N times of switching and a cell switching information base; and determining the position of the terminal to be tested by utilizing the speed model of the terminal to be tested, the cell switching information of the latest switching, the current time and the interval duration between the latest switching and the current time. The position positioning method, the position positioning device, the position positioning equipment and the computer readable storage medium in the embodiment of the invention can improve the accuracy of the position positioning of the terminal to be detected.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a position locating method, apparatus, device, and computer readable storage medium.
Background
With the development of traffic and the demand of passengers, more and more high-speed vehicles are put into use, such as automobiles, high-speed rails, and the like. The quality of communication services is also increasingly demanding for users traveling in these high speed vehicles.
In order to improve the communication quality of the user's terminal in a vehicle operating at high speed, the operator needs to position the user's terminal. And collecting the performance parameters of the user terminal at the position obtained by positioning, and improving the quality of the communication network where the user terminal is positioned according to the collected performance parameters of the position.
Currently, a Positioning function of a Global Positioning System (GPS) built in a terminal of a user is used for Positioning the terminal of the user. When the GPS satellite search meets the conditions, the pseudo distance from the receiving antenna to the satellite and the change rate of the distance can be measured and calculated according to the captured and tracked satellite signals, and data such as the orbit parameters of the satellite can be obtained through demodulation. And calculating by using a positioning calculation method according to the data so as to obtain the longitude and the latitude of the position where the terminal of the user is located, thereby realizing the positioning of the terminal of the user.
However, in the traffic route of high-speed vehicles, communication coverage is mostly performed in a Radio Remote Unit (RRU) manner in a communication cell. Under the RRU coverage mode, one communication cell corresponds to a plurality of different longitudes and latitudes. The running speed of vehicles such as automobiles and high-speed trains is high, and the moving speed of terminals of users in the vehicles is also high. Therefore, the accuracy of the position location of the user's terminal is low.
Disclosure of Invention
The embodiment of the invention provides a position positioning method, a position positioning device, position positioning equipment and a computer readable storage medium, which can improve the position positioning accuracy of a terminal to be detected.
In a first aspect, an embodiment of the present invention provides a position location method, including: acquiring cell switching information of a test terminal on a traffic route at different movement speeds, wherein the cell switching information comprises a switching point position, a movement direction and a switching cell; establishing a cell switching information base according to the cell switching information and the movement speed corresponding to the cell switching information; establishing a speed model of the terminal to be tested based on the acquired motion direction and switching cell of the terminal to be tested during adjacent N times of switching and a cell switching information base, wherein N is an integer greater than or equal to 2; and determining the position of the terminal to be tested by utilizing the speed model of the terminal to be tested, the cell switching information of the latest switching, the current time and the interval duration between the latest switching and the current time.
In some embodiments of the first aspect, establishing the cell handover information base according to the cell handover information and the movement speed corresponding to the cell handover information includes: taking the cell switching information of which the movement speed is greater than or equal to a preset speed threshold value as high-speed cell switching information; synthesizing and calculating the switching point position in the high-speed cell switching message with consistent moving direction and consistent switching cell to obtain the high-speed synthesized switching point position; taking the cell switching information with the movement speed less than a preset speed threshold value as low-speed cell switching information; synthesizing and calculating the switching point position in the low-speed cell switching message with consistent movement direction and consistent switching cell to obtain the low-speed synthesized switching point position; and establishing a cell switching information base according to the cell switching information to which the high-speed synthesis switching point position belongs and the cell switching information to which the low-speed synthesis switching point position belongs.
In some embodiments of the first aspect, establishing a speed model of the terminal to be tested based on the obtained motion direction and the handover cell of the terminal to be tested during the adjacent N handovers, and the cell handover information base includes: matching the moving direction of the terminal to be tested during adjacent N times of switching with a switching cell and cell switching information base to obtain the switching point position matched with the moving direction during N times of switching and the switching cell in the cell switching information base; calculating the average movement speed of the terminal to be tested in N times of switching by using the movement direction in the cell switching information base during N times of switching and the switching point position matched with the switching cell; and establishing a speed model of the terminal to be tested based on the average movement speed of the terminal to be tested in the N times of switching.
In some embodiments of the first aspect, determining the position of the terminal to be tested by using the speed model of the terminal to be tested, the cell handover information of the latest handover, the current time, and the interval duration between the latest handover and the current time includes: calculating the distance between the terminal to be tested at the current moment and the switching point position of the latest switching by utilizing the speed model of the terminal to be tested, the latest switching and the interval duration of the current moment; and determining the position of the terminal to be tested according to the distance between the terminal to be tested at the current moment and the position of the switching point switched for the last time and the position of the switching point in the cell switching information switched for the last time.
In some embodiments of the first aspect, establishing the cell switching information base according to the cell switching information to which the high-speed synthesized switching point location belongs and the cell switching information to which the low-speed synthesized switching point location belongs includes: screening the high-speed synthesis switching point position and the low-speed synthesis switching point position to obtain an accurate synthesis switching point position, wherein the accurate synthesis switching point position comprises a high-speed synthesis switching point position and a low-speed synthesis switching point position, the distance between the high-speed synthesis switching point position and the traffic route is within a preset distance threshold range, and the distance between the low-speed synthesis switching point position and the traffic route is within a preset distance threshold range; and establishing a cell switching information base according to the cell switching information to which the accurate synthesis switching point position belongs.
In some embodiments of the first aspect, calculating an average moving speed of the terminal to be measured in N times of handover by using a position of a handover point in the cell handover information base, where the position is matched with a moving direction in N times of handover and a handover cell, includes: calculating to obtain an average speed by utilizing the moving direction of the switching for N times in the cell switching information base, the high-speed synthesis switching point position matched with the switching cell and the time of the switching for N times; if the average speed is greater than or equal to a preset speed threshold, taking the average speed as the average movement speed of the terminal to be tested in N times of switching; if the average speed is smaller than the preset speed threshold, calculating to obtain an updated average speed by using the moving direction in the cell switching information base during N times of switching and the low-speed synthesis switching point position matched with the switching cell and the time of N times of switching, and taking the updated average speed as the average moving speed of the terminal to be tested in N times of switching.
In some embodiments of the first aspect, the handover cell comprises an original cell and a target cell.
In a second aspect, an embodiment of the present invention provides a position locating apparatus, including: the information acquisition module is configured to acquire cell switching information of the test terminal on the traffic route at different movement speeds, wherein the cell switching information comprises a switching point position, a movement direction and a switching cell; the information base establishing module is configured to establish a cell switching information base according to the cell switching information and the movement speed corresponding to the cell switching information; the model establishing module is configured to establish a speed model of the terminal to be tested based on the acquired motion direction of the terminal to be tested during adjacent N times of switching, the switching cell and a cell switching information base, wherein N is an integer greater than or equal to 2; and the position determining module is configured to determine the position of the terminal to be tested by utilizing the speed model of the terminal to be tested, the cell switching information of the latest switching, the current time and the interval duration between the latest switching and the current time.
In a third aspect, an embodiment of the present invention provides a position locating apparatus, including a memory, a processor, and a program stored in the memory and capable of being executed on the processor, where the processor executes the program to implement the position locating method in the foregoing technical solution.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a program is stored, where the program is executed by a processor to implement the position location method in the above technical solution.
The embodiment of the invention provides a position positioning method, a position positioning device, position positioning equipment and a computer readable storage medium. And establishing a cell switching information base through cell switching information of the test terminal on the traffic route at different movement speeds. And establishing a speed model of the terminal to be tested according to the moving direction of the terminal to be tested during adjacent N times of switching, the switching cell and a cell switching information base. The speed model of the terminal to be tested represents the speed state and the speed change trend of the terminal to be tested. The distance between the position of the terminal to be tested at the current moment and the position of the switching point switched at the latest time can be determined through the cell switching information switched at the latest time, the interval duration between the current moment and the latest switching and the speed of the terminal to be tested at the current moment in the speed model, so that the terminal to be tested is subjected to speed positioning. Compared with the prior art of positioning the terminal of the user taking the vehicle by using the GPS positioning function, the cell switching information base in the embodiment of the invention is obtained based on the cell switching of the test terminal under different speeds, and the speed model of the terminal to be tested is established, so that the accurate distance between the current moment of the terminal to be tested and the position of the switching point of the latest switching can be obtained no matter whether the movement speed of the terminal to be tested is high or low, and the accuracy of positioning the position of the terminal to be tested (namely the terminal of the user) is improved.
Drawings
The present invention will be better understood from the following description of specific embodiments thereof taken in conjunction with the accompanying drawings, in which like or similar reference characters designate like or similar features.
FIG. 1 is a flow chart of a position location method according to an embodiment of the present invention;
FIG. 2 is a flow chart of a position location method according to another embodiment of the present invention;
FIG. 3 is a graph illustrating a uniform acceleration model according to another embodiment of the present invention;
FIG. 4 is a graph illustrating an acceleration-followed-deceleration model according to another embodiment of the present invention;
FIG. 5 is a graph illustrating a deceleration-followed-acceleration model according to another embodiment of the present invention;
FIG. 6 is a graph illustrating a uniform deceleration model according to another embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a position-locating device 200 according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a position-locating device according to another embodiment of the present invention;
fig. 9 is a schematic structural diagram of a position locating apparatus according to an example of the embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is in no way limited to any specific configuration and algorithm set forth below, but rather covers any modification, replacement or improvement of elements, components or algorithms without departing from the spirit of the invention. In the drawings and the following description, well-known structures and techniques are not shown in order to avoid unnecessarily obscuring the present invention.
In a scene that a user travels by taking a vehicle, a place where the user uses the terminal to communicate is greatly changed, and a cell is often required to be switched. On some very fast moving vehicles, such as high-speed rails, the communication quality of the user's terminal is of greater concern. Embodiments of the present invention provide a position location method, apparatus, device, and computer-readable storage medium, so that a more accurate position location can be performed for a terminal of a user of a vehicle traveling at a very fast speed.
Fig. 1 is a flowchart of a position location method according to an embodiment of the present invention. As shown in fig. 1, the position location method may include steps 101 to 104.
In step 101, cell switching information of a test terminal on a traffic route at different movement speeds is acquired.
The test terminal can test the traffic route at different movement speeds in advance, so that the cell switching information of the test terminal on the traffic route at different movement speeds can be obtained.
The cell switching information comprises a switching point position, a moving direction and a switching cell. The position of the switching point is the position of the terminal for cell switching. In one example, the switch point location is a longitude and latitude of the switch point. The moving direction is a direction of the terminal on the traffic route, and in one example, the moving direction may include an upward direction or a downward direction. For example, there is a traffic route with a departure point being a point a and a destination point being a point B, and the direction from the point a to the point B is an upward direction and the direction from the point B to the point a is a downward direction. The handover cell is a cell which the terminal participates in handover when performing cell handover.
In step 102, a cell switching information base is established according to the cell switching information and the movement speed corresponding to the cell switching information.
The cell switching information base distinguishes the cell switching information according to the movement speed. In one example, the speed of movement is divided into two states, a high speed state and a low speed state. The cell switching information under different motion speed states can be further processed, and the accuracy of the cell switching information is improved. The cell handover information in the cell handover information base may be as shown in table one, where the handover cell includes an original cell and a target cell, and the original cell ID (i.e., the original cell identity) and the target cell ID (i.e., the target cell identity) are recorded in table one. The switching point position comprises a high-speed state switching point longitude and latitude, and a low-speed state switching point longitude and latitude. In the movement direction, 0 indicates an upward direction, and 1 indicates a downward direction. Table one is shown below:
watch 1
In step 103, a velocity model of the terminal to be tested is established based on the acquired motion direction and switching cell of the terminal to be tested during the adjacent N times of switching and the cell switching information base.
Wherein N is an integer of 2 or more. And acquiring the moving direction and the switching cell of the terminal to be tested when the terminal is switched for more than 2 times, and utilizing the cell switching information in the cell switching information base. For example, when N is 3, the moving direction and the handover cell of the terminal to be measured during adjacent 3 handovers are obtained. And searching a switching point position corresponding to the moving direction and the switching cell in the adjacent 3 times of switching in a cell switching information base according to the moving direction and the switching cell in the adjacent 3 times of switching. Therefore, a speed model of the terminal to be tested is established according to the moving direction, the switching cell and the position of the switching point in the cell switching information base.
The speed model of the terminal to be tested can reflect the speed state of the terminal to be tested in the adjacent N times of switching. For example, the speed model may include one or more than two of a uniform acceleration model, an acceleration before deceleration model, a deceleration before acceleration model, a uniform deceleration model, and the like.
In step 104, the position of the terminal to be tested is determined by using the speed model of the terminal to be tested, the cell switching information of the latest switching, the current time and the interval duration between the latest switching and the current time.
And obtaining a speed model of the terminal to be tested, and obtaining the speed of the terminal to be tested expressed by the speed model and the distance between the position of the terminal to be tested at the current moment and the position of the switching point switched at the last time according to the cell switching information of the latest switching, the current moment, the interval duration of the current moment and the last switching, so as to obtain the position of the terminal to be tested. Accurate positioning of the position of a terminal of a user riding in a vehicle is achieved.
The embodiment of the invention provides a position positioning method. And establishing a cell switching information base through cell switching information of the test terminal on the traffic route at different movement speeds. And establishing a speed model of the terminal to be tested according to the moving direction of the terminal to be tested during adjacent N times of switching, the switching cell and a cell switching information base. The speed model of the terminal to be tested represents the speed state and the speed change trend of the terminal to be tested. The distance between the position of the terminal to be tested at the current moment and the position of the switching point switched at the latest time can be determined through the cell switching information switched at the latest time, the interval duration between the current moment and the latest switching and the speed of the terminal to be tested at the current moment in the speed model, so that the terminal to be tested is subjected to speed positioning. Compared with the prior art of positioning the terminal of the user taking the vehicle by using the GPS positioning function, the cell switching information base in the embodiment of the invention is obtained based on the cell switching of the test terminal under different speeds, and the speed model of the terminal to be tested is established, so that the accurate distance between the current moment of the terminal to be tested and the position of the switching point of the latest switching can be obtained no matter whether the movement speed of the terminal to be tested is high or low, and the accuracy of positioning the position of the terminal to be tested (namely the terminal of the user) is improved.
Fig. 2 is a flowchart of a position location method according to another embodiment of the present invention. Fig. 2 differs from fig. 1 in that step 102 in fig. 1 can be specifically detailed as step 1021 to step 1025 in fig. 2, step 103 in fig. 1 can be specifically detailed as step 1031 to step 1033 in fig. 2, and step 104 in fig. 1 can be specifically detailed as step 1041 and step 1042 in fig. 2.
In step 1021, the cell switching information with the movement speed greater than or equal to the preset speed threshold is used as the high speed cell switching information.
The preset speed threshold may be determined empirically, or may be set according to the speed of the vehicle where the terminal to be tested is located, which is not limited herein.
In this embodiment, the cell switching information is divided into high-speed cell switching information and low-speed cell switching information according to the movement speed corresponding to the cell switching information.
In step 1022, the switching point positions in the high-speed cell switching messages with the same moving direction and the same switching cell are synthesized and calculated to obtain the high-speed synthesized switching point position.
In one example, the handover cell includes an original cell and a target cell. The handover cell agreement indicates that the original cell agrees and the target cell agrees.
If the number of the high-speed cell switching messages with the consistent moving direction and the consistent switching cell is one, the switching point position in the high-speed cell switching messages with the consistent moving direction and the consistent switching cell can be used as the high-speed synthesis switching point position.
If the number of the high-speed cell switching messages with the consistent moving directions and the consistent switching cells is more than two, the switching point positions in the high-speed cell switching messages with the consistent moving directions and the consistent switching cells can be synthesized and calculated to obtain a high-speed synthesized switching point position. The synthesis calculation may adopt an average value calculation, that is, an average value of two or more switching point positions is obtained, so as to obtain a high-speed synthesis switching point position. The synthesis calculation can also adopt weighting calculation, namely, weighting values are set for more than two switching point positions, and weighting calculation is carried out on more than two switching points by utilizing a weighting algorithm to obtain a high-speed synthesis switching point position. The synthesis algorithm is not limited herein.
In step 1023, the cell switching information with the movement speed less than the preset speed threshold is used as the low-speed cell switching information.
In step 1024, the switching point positions in the low-speed cell switching messages with the consistent moving direction and the consistent switching cell are synthesized and calculated to obtain the low-speed synthesized switching point position.
If the number of the low-speed cell switching messages with the consistent moving direction and the consistent switching cell is one, the switching point position in the low-speed cell switching message with the consistent moving direction and the consistent switching cell can be used as the low-speed composite switching point position.
If the number of the low-speed cell switching messages with the consistent moving directions and the consistent switching cells is more than two, the switching point positions in the low-speed cell switching messages with the consistent moving directions and the consistent switching cells can be synthesized and calculated to obtain a low-speed synthesized switching point position. The synthesis calculation may adopt an average value calculation, that is, an average value of two or more switching point positions is obtained, so as to obtain a low-speed synthesis switching point position. The synthesis calculation can also adopt weighting calculation, namely, weighting values are set for more than two switching point positions, and weighting calculation is carried out on more than two switching points by utilizing a weighting algorithm to obtain a low-speed synthesis switching point position. The synthesis algorithm is not limited herein.
In step 1025, a cell switching information base is established according to the cell switching information to which the high-speed synthesis switching point position belongs and the cell switching information to which the low-speed synthesis switching point position belongs.
In one example, the cell switching information base may include switching information to which the high-speed composite switching point location belongs and cell switching information to which the low-speed composite switching point location belongs. The high-speed synthesis switching point position and the low-speed synthesis switching point position are the switching point positions which are synthesized by more than one switching point position and are subjected to synthesis calculation. The position of the high-speed synthetic switching point and the position of the low-speed synthetic switching point can well represent the position of the switching point in a high-speed state and the position of the switching point in a low-speed state.
The switching point positions in the high-speed cell switching messages with the consistent moving direction and the consistent switching cells are synthesized, so that the situation that the accurate switching point positions are difficult to select or the wrong switching point positions are selected when the high-speed cell switching messages with the consistent moving direction and the consistent switching cells have a plurality of switching point positions can be avoided, and the accuracy of the information in the cell switching information base is improved. Thereby improving the accuracy of position location.
In another example, the fine synthesized switch point locations may be filtered out in the high speed synthesized switch point locations and the low speed synthesized switch point locations. The accurate synthetic switching point position comprises a high-speed synthetic switching point position and a low-speed synthetic switching point position, wherein the distance between the high-speed synthetic switching point position and the traffic route is within a preset distance threshold range, and the distance between the low-speed synthetic switching point position and the traffic route is within the preset distance threshold range. The preset distance range may be set according to experience or a moving speed of the test terminal, and is not limited herein. And establishing a cell switching information base according to the cell switching information to which the accurate synthesis switching point position belongs.
On the basis of carrying out synthesis calculation on the switching point positions in the high-speed cell switching messages with consistent movement directions and consistent switching cells, the switching point positions far away from the traffic route are excluded, and therefore the accuracy of the information in the cell switching information base is further improved. Further improving the accuracy of position location.
In the embodiment of the invention, the cell switching information under different motion speed states is further processed, so that the cell switching information in the cell switching information base is more accurate.
In step 1031, the moving direction of the terminal to be tested during the adjacent N times of switching is matched with the switching cell and cell switching information base, so as to obtain the switching point position matched with the moving direction during the N times of switching and the switching cell in the cell switching information base.
For the matching of the moving direction and the switching cell with the cell switching information base during each switching, if the moving direction and the moving direction in the cell switching information of the switching cell and the cell switching information base are consistent with the switching cell during the switching, the cell switching information is matched with the moving direction and the switching cell. And acquiring the switching point position in the cell switching information matched with the moving direction of the switching and the switching cell in the cell switching information base.
For example, the cell handover information in the cell handover information base is as shown in table one above. If the moving direction in a certain handover is the uplink direction, the ID of the original cell is 254763521, and the ID of the target cell is 254763265. The cell switching information with the sequence number of 8 is matched with the moving direction and the switching cell during the switching at this time in the cell switching information base. That is, the handover points in the cell handover information base that match the moving direction at the time of this handover and the handover cell are longitude 111.85271 in the high speed state, latitude 36.638549 in the high speed state, longitude 111.852551 in the low speed state, and latitude 36.638564 in the low speed state.
In step 1032, the average moving speed of the terminal to be measured in the N times of switching is calculated by using the moving direction in the cell switching information base during the N times of switching and the switching point position matched with the switching cell.
For example, if N is 4, the distance between two places can be calculated by using the switching point position C1 matching the moving direction and the switching cell at the time of switching 1 and the switching point position C2 matching the moving direction and the switching cell at the time of switching 2, and the average moving speed V1 of the terminal to be measured between the switching 1 and the switching 2 is obtained according to the interval duration between the two times of switching; calculating the distance between two places by using a switching point position C2 matched with the moving direction and the switching cell during the 2 nd switching and a switching point position C3 matched with the moving direction and the switching cell during the 3 rd switching, and obtaining the average moving speed V2 of the terminal to be tested between the 2 nd switching and the 3 rd switching according to the interval duration between the two times of switching; by analogy, the average movement speed V3 of the terminal to be measured between the 3 rd switching and the 4 th switching can be obtained.
In one example, the average speed may be calculated using the high-speed composite switch point position in the cell switch information base that matches the moving direction at the time of N times of switching and the switching cell, and the time of N times of switching. That is, the average speed is obtained by performing calculation by default using the high-speed synthesis switch point position.
And if the average speed is greater than or equal to the preset speed threshold, taking the average speed as the average movement speed of the terminal to be detected in N times of switching. That is, if the average speed is greater than the preset speed threshold, it may indicate that the terminal to be tested is in a high-speed state, and the average speed may be used as the average moving speed of the terminal to be tested in N times of switching.
If the average speed is smaller than the preset speed threshold, calculating to obtain an updated average speed by using the moving direction in the cell switching information base during N times of switching and the low-speed synthesis switching point position matched with the switching cell and the time of N times of switching, and taking the updated average speed as the average moving speed of the terminal to be tested in N times of switching. That is, if the average speed is less than the preset speed threshold, it may indicate that the terminal to be tested is in a low-speed state, the position of the switching point needs to be synthesized at a low speed, the updated average speed is obtained through recalculation, and the updated average speed is used as the average moving speed of the terminal to be tested in N times of switching.
In step 1033, a velocity model of the terminal to be measured is established based on the average velocity of motion of the terminal to be measured in the N times of switching.
The speed model may be presented in the form of an expression, or may be presented in other forms, and is not limited herein.
In one example, the process of N times of switching may be segmented based on the average moving speed of the terminal to be tested in N-side switching, so as to establish a speed model of the terminal to be tested according to the segmented speed of each segment.
For example, if N is 4, the speed model of the terminal to be tested is established according to the average moving speed V (t-1) of the terminal to be tested between the 1 st handover and the 2 nd handover, the average moving speed V (t) of the terminal to be tested between the 2 nd handover and the 3 rd handover, and the average moving speed V (t +1) of the terminal to be tested between the 3 rd handover and the 4 th handover.
Several velocity models will be exemplified below:
a first speed model: and (4) uniformly accelerating the model.
FIG. 3 is a graph illustrating a uniform acceleration model according to another embodiment of the present invention. The curve of the speed of each section of the segmented terminal to be tested is obtained to be closer to the variation trend of the actual speed of the terminal to be tested. Using the curves shown in fig. 3, a uniform acceleration model expressed by expressions (1) to (3) can be obtained. Expressions (1) to (3) are as follows:
v0＝V(t)×[V(t)/V(t+1)]，t≤t0 (1)
v1＝V(t)，t0＜t≤t1 (2)
v2＝2×V(t)-V(t)×[V(t)/V(t+1)]，t1＜t≤t2 (3)
wherein v is0The speed of the 1 st section of the terminal to be tested after segmentation; v. of1The speed of the segmented 2 nd section of the terminal to be tested is obtained; v. of2The speed of the segmented 3 rd section of the terminal to be detected is obtained; t is t0The end time of the 1 st section and the start time of the 2 nd section after the terminal to be tested is segmented; t is t1The end time of the 2 nd section and the starting time of the 3 rd section after the terminal to be tested is segmented; t is t2The end time of the 3 rd section after the terminal to be tested is segmented is obtained.
A second speed model: acceleration followed by deceleration model.
Fig. 4 is a graph illustrating an acceleration-followed-deceleration model according to another embodiment of the present invention. The curve of the speed of each section of the segmented terminal to be tested is obtained to be closer to the variation trend of the actual speed of the terminal to be tested. With the curves shown in fig. 4, a uniform acceleration model expressed by expressions (4) to (6) can be obtained. Expressions (4) to (6) are as follows:
v0＝V(t+1)，t≤t0 (4)
v1＝3×V(t)-V(t+1)-V(t-1)，t0＜t≤t1 (5)
v2＝V(t-1)，t1＜t≤t2 (6)
wherein v is0The speed of the 1 st section of the terminal to be tested after segmentation; v. of1The speed of the segmented 2 nd section of the terminal to be tested is obtained; v. of2The speed of the segmented 3 rd section of the terminal to be detected is obtained; t is t0The end time of the 1 st section and the start time of the 2 nd section after the terminal to be tested is segmented; t is t1Is to be treatedMeasuring the end time of the 2 nd section and the starting time of the 3 rd section after the terminal is segmented; t is t2The end time of the 3 rd section after the terminal to be tested is segmented is obtained.
A third speed model: the model is decelerated before acceleration.
Fig. 5 is a graph illustrating a deceleration-followed-acceleration model according to another embodiment of the present invention. The curve of the speed of each section of the segmented terminal to be tested is obtained to be closer to the variation trend of the actual speed of the terminal to be tested. With the curves shown in fig. 5, it is possible to obtain a uniform acceleration model expressed by expressions (7) to (9). Expressions (7) to (9) are as follows:
v0＝V(t)+V(t)×[V(t)/V(t-1)]，t≤t0 (7)
v1＝V(t)-V(t)×[V(t)/V(t-1)]-V(t)×[V(t)/V(t+1)]，t0＜t≤t1 (8)
v2＝V(t)+V(t)×[V(t)/V(t+1)]，t1＜t≤t2 (9)
wherein v is0The speed of the 1 st section of the terminal to be tested after segmentation; v. of1The speed of the segmented 2 nd section of the terminal to be tested is obtained; v. of2The speed of the segmented 3 rd section of the terminal to be detected is obtained; t is t0The end time of the 1 st section and the start time of the 2 nd section after the terminal to be tested is segmented; t is t1The end time of the 2 nd section and the starting time of the 3 rd section after the terminal to be tested is segmented; t is t2The end time of the 3 rd section after the terminal to be tested is segmented is obtained.
And a speed model IV: and (5) a uniform deceleration model.
Fig. 6 is a graph illustrating a uniform deceleration model according to another embodiment of the present invention. The curve of the speed of each section of the segmented terminal to be tested is obtained to be closer to the variation trend of the actual speed of the terminal to be tested. With the curves shown in fig. 6, it is possible to obtain a uniform acceleration model expressed by expression (10) to expression (12). Expressions (10) to (12) are as follows:
v0＝2×V(t)-V(t-1)，t≤t0 (10)
v1＝V(t)，t0＜t≤t1 (11)
v2＝V(t-1)，t1＜t≤t2 (12)
wherein v is0The speed of the 1 st section of the terminal to be tested after segmentation; v. of1The speed of the segmented 2 nd section of the terminal to be tested is obtained; v. of2The speed of the segmented 3 rd section of the terminal to be detected is obtained; t is t0The end time of the 1 st section and the start time of the 2 nd section after the terminal to be tested is segmented; t is t1The end time of the 2 nd section and the starting time of the 3 rd section after the terminal to be tested is segmented; t is t2The end time of the 3 rd section after the terminal to be tested is segmented is obtained.
A velocity model V: other models.
Other models may be represented by expression (13). Expression (13) is as follows:
v0＝v1＝v2＝2×V(t)-V(t-1)，t0＜t≤t2 (13)
wherein v is0The speed of the 1 st section of the terminal to be tested after segmentation; v. of1The speed of the segmented 2 nd section of the terminal to be tested is obtained; v. of2The speed of the segmented 3 rd section of the terminal to be detected is obtained; t is t0The end time of the 1 st section after the terminal to be tested is segmented; t is t2The end time of the 3 rd section after the terminal to be tested is segmented is obtained.
In step 1041, the distance between the terminal to be tested at the current time and the position of the switching point of the last switching is calculated and obtained by using the speed model of the terminal to be tested and the interval duration between the last switching and the current time.
The distance between the terminal to be tested at the current moment and the switching point position of the last switching can be calculated by combining the speed of the current moment in the speed model of the terminal to be tested and the change trend of the speed in the speed model and combining the interval duration of the last switching and the current moment.
Such as: by using the expression of the speed model of the terminal to be measured in the above embodiment, expressions (14) to (16) of the distance between the terminal to be measured at the current time and the nearest fantasy switching point position can be obtained. Expressions (14) to (16) are as follows:
S＝v0×t，t≤t0 (14)
S＝v0×t0+v1×(t-t0)，t0＜t≤t1 (15)
S＝v0×t0+×v1(t1-t0)+v2×(t-t1)，t1＜t≤t2 (16)
s is the distance between the terminal to be tested at the current moment and the position of the latest fantasy switching point; v. of0The speed of the 1 st section of the terminal to be tested after segmentation; v. of1The speed of the segmented 2 nd section of the terminal to be tested is obtained; v. of2The speed of the segmented 3 rd section of the terminal to be detected is obtained; t is t0The end time of the 1 st section and the start time of the 2 nd section after the terminal to be tested is segmented; t is t1The end time of the 2 nd section and the starting time of the 3 rd section after the terminal to be tested is segmented; t is t2And t is the end time of the 3 rd section after the terminal to be tested is segmented, and is the current moment.
In step 1042, the position of the terminal to be tested is determined according to the distance between the terminal to be tested at the current time and the switching point of the latest switching and the switching point position in the cell switching information of the latest switching.
And on the basis of the position of the switching point in the cell switching information of the latest switching, calculating the distance between the terminal to be tested at the current moment and the switching point of the latest switching along the moving direction, and obtaining the position of the terminal to be tested. And positioning the terminal to be tested.
Fig. 7 is a schematic structural diagram of a position locating device 200 according to an embodiment of the present invention. As shown in fig. 7, the position-locating device 200 includes an information acquisition module 201, an information base creation module 202, a model creation module 203, and a position determination module 204.
The information acquisition module 201 is configured to acquire cell switching information of the test terminal on the traffic route at different movement speeds, where the cell switching information includes a switching point position, a movement direction, and a switching cell.
An information base establishing module 202 configured to establish a cell switching information base according to the cell switching information and the movement speed corresponding to the cell switching information.
The model establishing module 203 is configured to establish a speed model of the terminal to be tested based on the acquired motion direction and the switching cell of the terminal to be tested during the adjacent N times of switching and a cell switching information base, where N is an integer greater than or equal to 2.
The position determining module 204 is configured to determine the position of the terminal to be tested by using the speed model of the terminal to be tested, the cell switching information of the latest switching, the current time, and the interval duration between the latest switching and the current time.
The embodiment of the invention provides a position positioning device 200. And establishing a cell switching information base through cell switching information of the test terminal on the traffic route at different movement speeds. And establishing a speed model of the terminal to be tested according to the moving direction of the terminal to be tested during adjacent N times of switching, the switching cell and a cell switching information base. The speed model of the terminal to be tested represents the speed state and the speed change trend of the terminal to be tested. The distance between the position of the terminal to be tested at the current moment and the position of the switching point switched at the latest time can be determined through the cell switching information switched at the latest time, the interval duration between the current moment and the latest switching and the speed of the terminal to be tested at the current moment in the speed model, so that the terminal to be tested is subjected to speed positioning. Compared with the prior art of positioning the terminal of the user taking the vehicle by using the GPS positioning function, the cell switching information base in the embodiment of the invention is obtained based on the cell switching of the test terminal under different speeds, and the speed model of the terminal to be tested is established, so that the accurate distance between the current moment of the terminal to be tested and the position of the switching point of the latest switching can be obtained no matter whether the movement speed of the terminal to be tested is high or low, and the accuracy of positioning the position of the terminal to be tested (namely the terminal of the user) is improved.
Fig. 8 is a schematic structural diagram of a position-locating device 200 according to another embodiment of the present invention. Fig. 8 differs from fig. 7 in that the information base creation module 202 in fig. 7 may include the high-speed information acquisition unit 2021, the high-speed switching point acquisition unit 2022, the low-speed information acquisition unit 2023, the low-speed switching point acquisition unit 2024, and the information base creation unit 2025 in fig. 8; the model building module 203 in fig. 7 may include a matching unit 2031, an average speed calculation unit 2032, and a model building unit 2033 in fig. 8; the position determination module 204 in fig. 7 may include the distance calculation unit 2041 and the position location unit 2042 in fig. 8.
A high speed information acquisition unit 2021 configured to take cell handover information of which moving speed is equal to or greater than a preset speed threshold value as high speed cell handover information.
The high-speed switching point obtaining unit 2022 is configured to perform synthesis calculation on the switching point positions in the high-speed cell switching message with the consistent moving direction and the consistent switching cell to obtain a high-speed synthesized switching point position.
A low speed information obtaining unit 2023 configured to take the cell switching information of which the moving speed is smaller than a preset speed threshold value as the low speed cell switching information.
The low-speed handover point obtaining unit 2024 is configured to perform synthesis calculation on the handover point positions in the low-speed cell handover message with the consistent moving direction and the consistent handover cell, so as to obtain a low-speed synthesized handover point position.
An information base establishing unit 2025 configured to establish a cell switching information base according to the cell switching information to which the high-speed synthesis switching point position belongs and the cell switching information to which the low-speed synthesis switching point position belongs.
In one example, the information base establishing unit 2025 may be specifically configured to filter the accurate synthesized switching point position in the high-speed synthesized switching point position and the low-speed synthesized switching point position, where the accurate synthesized switching point position includes a high-speed synthesized switching point position having a distance to the traffic route within a preset distance threshold range and a low-speed synthesized switching point position having a distance to the traffic route within a preset distance threshold range; and establishing a cell switching information base according to the cell switching information to which the accurate synthesis switching point position belongs.
The matching unit 2031 is configured to match the moving direction of the terminal to be tested during the adjacent N times of switching with the switching cell and cell switching information base, so as to obtain the switching point position in the cell switching information base, where the moving direction and the switching cell are matched during the N times of switching.
An average speed calculation unit 2032 configured to calculate an average moving speed of the terminal to be measured in the N times of handovers by using the moving direction in the cell handover information base at the time of the N times of handovers and the position of the handover point matched with the handover cell.
In one example, the average speed calculation unit 2032 may be specifically configured to calculate the average speed by using the high-speed synthesized switching point position matching the moving direction at the time of switching N times and the switching cell in the cell switching information base, and the time of switching N times; if the average speed is greater than or equal to a preset speed threshold, taking the average speed as the average movement speed of the terminal to be tested in N times of switching; if the average speed is smaller than the preset speed threshold, calculating to obtain an updated average speed by using the moving direction in the cell switching information base during N times of switching and the low-speed synthesis switching point position matched with the switching cell and the time of N times of switching, and taking the updated average speed as the average moving speed of the terminal to be tested in N times of switching.
A model establishing unit 2033 configured to establish a speed model of the terminal to be tested based on the average moving speed of the terminal to be tested in the N times of switching.
The distance calculating unit 2041 is configured to calculate a distance between the terminal to be tested at the current time and the switching point position of the last switching by using the speed model of the terminal to be tested, the last switching and the interval duration of the current time.
The position locating unit 2042 is configured to determine the position of the terminal to be tested according to the distance between the terminal to be tested at the current time and the switching point position of the latest switching and the switching point position in the cell switching information of the latest switching.
In one example, the handover cell in the above embodiment includes an original cell and a target cell.
Fig. 9 is a schematic structural diagram of a position-locating apparatus 300 according to an example of the embodiment of the present invention. As shown in fig. 9, the position-locating device 300 includes a memory 301 and a processor 302. The memory 301 stores programs that can be run on the processor 302. The processor 302 may implement the position location method in the above-described embodiment when running the program.
In one example, position-locating device 300 may also include a communication interface 303 and a bus 304.
In particular, the processor 302 may include a Central Processing Unit (CPU), or A Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement an embodiment of the present invention.
Memory 301 may include mass storage for data or instructions. By way of example, and not limitation, memory 301 may include an HDD, floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or Universal Serial Bus (USB) drive, or a combination of two or more of these. Memory 301 may include removable or non-removable (or fixed) media, where appropriate. Memory 301 may be internal or external to position-location apparatus 300, where appropriate. In a particular embodiment, the memory 301 is a non-volatile solid-state memory. In certain embodiments, memory 301 comprises Read Only Memory (ROM). Where appropriate, the ROM may be mask-programmed ROM, Programmable ROM (PROM), Erasable PROM (EPROM), Electrically Erasable PROM (EEPROM), electrically rewritable ROM (EAROM), or flash memory or a combination of two or more of these.
As shown in fig. 9, the memory 301, the processor 302, and the communication interface 303 are connected via a bus 304 to perform communication with each other.
The communication interface 303 is mainly used for implementing communication between modules, apparatuses, units and/or devices in the embodiment of the present invention.
The bus 304 comprises hardware, software, or both to couple the components that are the position-locating device 300 to each other. By way of example, and not limitation, a bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hypertransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a Micro Channel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus or a combination of two or more of these. Bus 304 may include one or more buses, where appropriate. Although specific buses have been described and shown in the embodiments of the invention, any suitable buses or interconnects are contemplated by the invention.
In combination with the position location method in the foregoing embodiments, the embodiments of the present invention may be implemented by providing a computer-readable storage medium. The computer-readable storage medium has stored thereon a program which, when executed by a processor, can implement the position locating method in the above-described embodiments.
It should be clear that the embodiments in this specification are described in a progressive manner, and the same or similar parts in the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. For apparatus embodiments, and computer-readable storage medium embodiments, reference may be made in the descriptive section to method embodiments. The present invention is not limited to the specific steps and structures described above and shown in the drawings. Those skilled in the art may make various changes, modifications and additions or change the order between the steps after appreciating the spirit of the invention. Also, a detailed description of known process techniques is omitted herein for the sake of brevity.
Claims (9)
1. A position location method, comprising:
acquiring cell switching information of a test terminal on a traffic route at different movement speeds, wherein the cell switching information comprises a switching point position, a movement direction and a switching cell;
establishing a cell switching information base according to the cell switching information and the movement speed corresponding to the cell switching information;
based on the acquired moving direction and switching cell of the terminal to be tested during adjacent N times of switching and the cell switching information base, establishing a speed model of the terminal to be tested, wherein N is an integer greater than or equal to 2, and the method comprises the following steps:
matching the moving direction of the terminal to be tested during adjacent N times of switching with the switching cell and the cell switching information base to obtain the switching point position matched with the moving direction of the terminal to be tested during N times of switching and the switching cell in the cell switching information base;
calculating the average movement speed of the terminal to be tested in the N times of switching by utilizing the movement direction in the cell switching information base during the N times of switching and the switching point position matched with the switching cell;
establishing a speed model of the terminal to be tested based on the average movement speed of the terminal to be tested in the N times of switching;
and determining the position of the terminal to be tested by utilizing the speed model of the terminal to be tested, the cell switching information of the latest switching, the current time and the interval duration between the latest switching and the current time.
2. The method of claim 1, wherein the establishing a cell switching information base according to the cell switching information and the movement speed corresponding to the cell switching information comprises:
taking the cell switching information with the movement speed greater than or equal to a preset speed threshold value as high-speed cell switching information;
synthesizing and calculating the switching point position in the high-speed cell switching message with consistent moving direction and consistent switching cell to obtain the high-speed synthesized switching point position;
taking the cell switching information with the movement speed smaller than the preset speed threshold value as low-speed cell switching information;
synthesizing and calculating the switching point position in the low-speed cell switching message with consistent movement direction and consistent switching cell to obtain the low-speed synthesized switching point position;
and establishing a cell switching information base according to the cell switching information to which the high-speed synthesis switching point position belongs and the cell switching information to which the low-speed synthesis switching point position belongs.
3. The method according to claim 1, wherein the determining the position of the terminal to be tested by using the speed model of the terminal to be tested, the cell handover information of the latest handover, the current time, and the time interval between the latest handover and the current time comprises:
calculating the distance between the terminal to be tested at the current moment and the position of the switching point of the latest switching by utilizing the speed model of the terminal to be tested, the latest switching and the interval duration of the current moment;
and determining the position of the terminal to be tested according to the distance between the terminal to be tested and the position of the switching point switched for the last time at the current moment and the position of the switching point in the cell switching information switched for the last time.
4. The method according to claim 2, wherein the establishing a cell switching information base according to the cell switching information to which the high-speed synthesis switching point location belongs and the cell switching information to which the low-speed synthesis switching point location belongs comprises:
screening a high-speed synthesis switching point position and a low-speed synthesis switching point position to obtain an accurate synthesis switching point position, wherein the accurate synthesis switching point position comprises the high-speed synthesis switching point position with the distance to the traffic route within a preset distance threshold range and the low-speed synthesis switching point position with the distance to the traffic route within the preset distance threshold range;
and establishing a cell switching information base according to the cell switching information to which the precise synthesis switching point position belongs.
5. The method according to claim 1, wherein the calculating the average moving speed of the terminal to be tested in N handovers by using the moving direction in the cell handover information base and the position of the handover point matched with the handover cell during N handovers comprises:
calculating to obtain an average speed by using the moving direction of the switching of the cell in the cell switching information base, the high-speed synthesis switching point position matched with the switching cell and the switching time of the cell for N times;
if the average speed is greater than or equal to a preset speed threshold, taking the average speed as the average movement speed of the terminal to be tested in the N times of switching;
if the average speed is smaller than a preset speed threshold, calculating to obtain an updated average speed by using the moving direction in the cell switching information base during N times of switching, the low-speed synthesis switching point position matched with the switching cell and the time of N times of switching, and taking the updated average speed as the average moving speed of the terminal to be tested in the N times of switching.
6. The method according to any of claims 1 or 2, wherein the handover cell comprises an original cell and a target cell.
7. A position locating device, comprising:
the information acquisition module is configured to acquire cell switching information of the test terminal on the traffic route at different movement speeds, wherein the cell switching information comprises a switching point position, a movement direction and a switching cell;
an information base establishing module configured to establish a cell switching information base according to the cell switching information and a movement speed corresponding to the cell switching information;
the model establishing module is configured to establish a speed model of the terminal to be tested based on the acquired motion direction and switching cell of the terminal to be tested during adjacent N times of switching and the cell switching information base, wherein N is an integer greater than or equal to 2, and the model establishing module comprises:
the matching unit is configured to match the moving direction of the terminal to be tested during adjacent N times of switching with the switching cell and the cell switching information base to obtain the switching point position matched with the moving direction of the terminal to be tested during N times of switching and the switching cell in the cell switching information base;
the average speed calculation unit is configured to calculate the average movement speed of the terminal to be tested in the N times of switching by using the moving direction in the cell switching information base during the N times of switching and the switching point position matched with the switching cell;
a model establishing unit configured to establish a speed model of the terminal to be tested based on the average moving speed of the terminal to be tested in the N times of switching;
and the position determining module is configured to determine the position of the terminal to be tested by utilizing the speed model of the terminal to be tested, the cell switching information of the latest switching, the current time and the interval duration between the latest switching and the current time.
8. A position locating device comprising a memory, a processor and a program stored on the memory and executable on the processor, the processor implementing the method of any one of claims 1 to 6 when executing the program.
9. A computer-readable storage medium, having stored thereon a program which, when executed by a processor, carries out the method of any one of claims 1-6.
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| CN113132947A (en) * | 2019-12-30 | 2021-07-16 | 中国移动通信集团福建有限公司 | Position information processing method based on high-speed rail user |
| CN111787488B (en) * | 2020-06-29 | 2022-07-05 | 北京东方国信科技股份有限公司 | User positioning method and system |
| CN117714008A (en) * | 2024-02-05 | 2024-03-15 | 极芯通讯技术(安吉)有限公司 | Rate matching mode switching method, electronic equipment and storage medium |
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