CN106793083A - A kind of mobile terminal locating method and device - Google Patents

Abstract

The present embodiments relate to communication technical field, more particularly to a kind of mobile terminal locating method and device, including：To mobile terminal transmission scheduling information, the schedule information is used to trigger the mobile terminal transmission measurement signal positioner；For same measurement signal, the positioner receives the measurement result of each measuring apparatus；The positioner obtains the positional information of the mobile terminal according to the measurement result of multiple measurement signals of each measuring apparatus.It can be seen that, after mobile terminal sends measurement signal, positioner can receive the measurement result of each measuring apparatus, then, positioner can obtain the positional information of mobile terminal according to the measurement result of multiple measurement signals of each measuring apparatus, therefore, even if the power to mobile terminal is adjusted in real time, mobile terminal can be still accurately positioned.

Description

Mobile terminal positioning method and device

Technical Field

The embodiment of the invention relates to the field of communication, in particular to a mobile terminal positioning method and device.

Background

The ability to pinpoint the location of a mobile terminal is a desirable feature in mobile telephone networks because of the need to provide customer services that rely on knowing where the users of these services are located, another reason for wanting to know the location of a mobile terminal is so that emergency services can locate callers who cannot themselves provide accurate personal locations.

In the prior art, a mobile terminal is positioned according to a mobile terminal power test result, and with the rapid development of the mobile internet, a shared channel mode is adopted for mobile terminal service transmission, and the power and frequency domain resources of the mobile terminal need to be adjusted in real time due to the fact that the shared channel mode is adopted for mobile terminal service transmission, so that the position of the mobile terminal cannot be accurately positioned according to the traditional method for positioning the mobile terminal according to the mobile terminal power test result.

Disclosure of Invention

The embodiment of the invention provides a mobile terminal positioning method and device, which are used for accurately positioning a mobile terminal.

The embodiment of the invention provides a mobile terminal positioning method, which comprises the following steps:

the method comprises the steps that a positioning device sends scheduling information to a mobile terminal, wherein the scheduling information is used for triggering the mobile terminal to send a measurement signal;

aiming at the same measuring signal, the positioning device receives the measuring result of each measuring device;

and the positioning device obtains the position information of the mobile terminal according to the measurement results of the plurality of measurement signals of each measurement device.

Further, each of the measuring devices comprises a first measuring device and a second measuring device;

after the positioning device receives the measurement result of each measurement device, the method further comprises:

the positioning device sends a first position moving request to the first measuring equipment and sends a second position moving request to the second equipment; and returning to the step that the positioning device sends the scheduling information to the mobile terminal.

Optionally, the measurement result includes time delay information and location information of the measurement device; the positioning apparatus obtains the position information of the mobile terminal according to the measurement results of the plurality of measurement signals of each measurement device, and includes:

for the same measuring signal, constructing a relational expression of the measuring signal according to the measuring result of the measuring signal

Obtaining the position information of the mobile terminal according to the relational expression of the plurality of measurement signals;

wherein x is_i1，y_i1，z_i1For the position information, x, of the first measuring device measured by the first measuring device when the mobile terminal transmits the ith measuring signal_i2，y_i2，z_i2The position information of the second measuring equipment measured by the second measuring equipment when the mobile terminal sends the ith measuring signal, x, y and z are the position information of the mobile terminal when the mobile terminal sends the ith measuring signal, T_i1Is the first time delay, T, measured by the first measuring equipment when the mobile terminal sends the ith measuring signal_i2And c is the speed of light, which is the second time delay measured by the second measuring equipment when the mobile terminal sends the ith measuring signal.

Optionally, the measurement result includes time delay information, received power, and location information of the measurement device;

the positioning device obtains the position information of the mobile terminal according to the measurement results of the signals to be measured of the measurement devices, and the method comprises the following steps:

aiming at the same measuring signal, the positioning device determines a preliminary position area of the terminal according to the maximum receiving power in each measuring device;

the positioning device determines the maximum position area of the terminal according to the preliminary position areas of the plurality of measurement signals;

the positioning device determining a plurality of location points from the maximum location area;

the positioning device determines the sum of the distance deviations of the position points according to the time delay information of the plurality of measurement signals and the position information of the measurement equipment aiming at each position point;

and the positioning device determines the position information of the terminal according to the sum of the distance deviations of the plurality of position points.

Optionally, each measuring device measures a channel estimation power spectrum when the mobile terminal sends a signal after receiving the scheduling information of the positioning device, and takes a maximum channel estimation value on the channel estimation power spectrum as time delay information; or,

the measuring equipment measures a channel estimation power spectrum when the mobile terminal sends a signal after receiving scheduling information of the positioning device, and determines time delay information according to a channel estimation value on the channel estimation power spectrum and the following formula;

wherein, T is time delay information, PDP (q) is a q-th channel estimation value on a channel estimation power spectrum, q is a positive integer and q is more than or equal to 1, and n is the total number of the channel estimation values on the channel estimation power spectrum; or,

and the measuring equipment measures a channel estimation power spectrum when the mobile terminal sends a signal after receiving the scheduling information of the positioning device, and takes a channel estimation value corresponding to a first point which is larger than a first threshold value on the channel estimation power spectrum as time delay information.

Further, the determining, by the positioning apparatus, a preliminary location area of the terminal according to the maximum received power in each measurement device includes:

the positioning device determines the maximum transmitting power of the mobile terminal in the current communication system in advance;

the positioning device determines power path loss according to the maximum receiving power in each measuring device and the predetermined maximum transmitting power of the mobile terminal in the current communication system;

and determining a preliminary position area of the terminal by adopting a channel model according to the power path loss.

Further, the determining, by the positioning apparatus, for each location point, a sum of distance deviations of the location point according to the time delay information of the plurality of measurement signals and the location information of the measurement device includes:

position information (x) of the positioning device for the kth position point_k，y_k，z_k) Determining the sum of the distance deviations of the kth position point by adopting the following formula;

wherein x is_k，y_k，z_kIs the position information of the kth position point, x_j1，y_j1，z_j1For the first measurementPosition information, x, of the first measuring device to be measured when the mobile terminal transmits the jth measuring signal_j2，y_j2，z_j2For the position information, T, of the second measuring device measured by the second measuring device when the mobile terminal transmits the jth measuring signal_j1Is a first time delay, T, measured by the first measuring device when the mobile terminal transmits the jth measuring signal_j2And c is the speed of light, which is the second time delay measured by the second measuring equipment when the mobile terminal sends the jth measuring signal.

The embodiment of the invention also comprises a mobile terminal positioning device, which comprises:

the mobile terminal comprises a triggering module, a measurement module and a processing module, wherein the triggering module is used for sending scheduling information to the mobile terminal, and the scheduling information is used for triggering the mobile terminal to send a measurement signal;

the receiving module is used for receiving the measuring result of each measuring device aiming at the same measuring signal;

and the positioning module is used for obtaining the position information of the mobile terminal according to the measurement results of the plurality of measurement signals of each measurement device.

Each measuring device comprises a first measuring device and a second measuring device;

after receiving the measurement result of each measurement device, the receiving module is further configured to: instructing the trigger module to send a first location movement request to the first measurement device and a second location movement request to the second device; and returns to send the scheduling information to the mobile terminal.

Further, the measurement result includes time delay information and position information of the measurement device; the positioning module is specifically configured to:

for the same measuring signal, constructing a relational expression of the measuring signal according to the measuring result of the measuring signal

Obtaining the position information of the mobile terminal according to the relational expression of the plurality of measurement signals;

wherein x is_i1，y_i1，z_i1For the position information, x, of the first measuring device measured by the first measuring device when the mobile terminal transmits the ith measuring signal_i2，y_i2，z_i2The position information of the second measuring equipment measured by the second measuring equipment when the mobile terminal sends the ith measuring signal, x, y and z are the position information of the mobile terminal when the mobile terminal sends the ith measuring signal, T_i1Is the first time delay, T, measured by the first measuring equipment when the mobile terminal sends the ith measuring signal_i2And c is the speed of light, which is the second time delay measured by the second measuring equipment when the mobile terminal sends the ith measuring signal.

Further, the measurement result includes time delay information, received power and position information of the measurement device;

the positioning module is specifically configured to:

aiming at the same measuring signal, determining a preliminary position area of the terminal according to the maximum receiving power in each measuring device;

determining a maximum location area of the terminal according to preliminary location areas of the plurality of measurement signals;

determining a plurality of location points from the maximum location area;

for each position point, determining the sum of the distance deviations of the position point according to the time delay information of the plurality of measuring signals and the position information of the measuring equipment;

and determining the position information of the terminal according to the sum of the distance deviations of the plurality of position points.

The measuring equipment measures a channel estimation power spectrum when the mobile terminal sends a signal after receiving scheduling information of the positioning device, and takes a maximum channel estimation value on the channel estimation power spectrum as time delay information; or,

the measuring equipment measures a channel estimation power spectrum when the mobile terminal sends a signal after receiving scheduling information of the positioning device, and determines time delay information according to a channel estimation value on the channel estimation power spectrum and the following formula;

wherein, T is time delay information, PDP (q) is a q-th channel estimation value on a channel estimation power spectrum, q is a positive integer and q is more than or equal to 1, and n is the total number of the channel estimation values on the channel estimation power spectrum; or,

further, each measuring device measures a channel estimation power spectrum when the mobile terminal sends a signal after receiving the scheduling information of the positioning device, and takes a channel estimation value corresponding to a first point on the channel estimation power spectrum, which is greater than a first threshold, as time delay information.

Optionally, the positioning module is specifically configured to:

predetermining the maximum transmitting power of the mobile terminal under the current communication system;

determining power path loss according to the maximum receiving power in each measuring device and the predetermined maximum transmitting power of the mobile terminal in the current communication system;

and determining a preliminary position area of the terminal by adopting a channel model according to the power path loss.

Optionally, the positioning module is specifically configured to:

position information (x) for the kth position point_k，y_k，z_k) Determining the kth position point using the following formulaThe sum of the distance deviations of (a);

wherein x is_k，y_k，z_kIs the position information of the kth position point, x_j1，y_j1，z_j1For the position information, x, of the first measuring device measured by the first measuring device when the mobile terminal transmits the jth measuring signal_j2，y_j2，z_j2For the position information, T, of the second measuring device measured by the second measuring device when the mobile terminal transmits the jth measuring signal_j1Is a first time delay, T, measured by the first measuring device when the mobile terminal transmits the jth measuring signal_j2And c is the speed of light, which is the second time delay measured by the second measuring equipment when the mobile terminal sends the jth measuring signal.

The method and the device for positioning the mobile terminal provided by the embodiment comprise the following steps: the method comprises the steps that a positioning device sends scheduling information to a mobile terminal, wherein the scheduling information is used for triggering the mobile terminal to send a measurement signal; aiming at the same measuring signal, the positioning device receives the measuring result of each measuring device; and the positioning device obtains the position information of the mobile terminal according to the measurement results of the plurality of measurement signals of each measurement device. It can be seen that, after the mobile terminal sends the measurement signal, the positioning apparatus can receive the measurement result of each measurement device, and then the positioning apparatus can obtain the location information of the mobile terminal according to the measurement results of the plurality of measurement signals of each measurement device, so that the mobile terminal can be accurately positioned even if the power of the mobile terminal is adjusted in real time.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below.

Fig. 1 is a flowchart illustrating a method for positioning a mobile terminal according to an embodiment of the present invention;

fig. 2 is a schematic flowchart of a method for determining location information of a terminal according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a mobile terminal positioning device 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 clearly apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Fig. 1 illustrates a flowchart of a method for positioning a mobile terminal according to an embodiment of the present invention, where as shown in fig. 1, the method may include:

s101, the positioning device sends scheduling information to the mobile terminal, and the scheduling information is used for triggering the mobile terminal to send a measurement signal.

The positioning device may be a base station, an independent functional network element, or a mobile terminal.

And S102, receiving the measurement result of each measurement device by the positioning device aiming at the same measurement signal.

S103, the positioning device obtains the position information of the mobile terminal according to the measurement results of the plurality of measurement signals of each measurement device.

In the step S101, the positioning apparatus may send scheduling information for triggering the mobile terminal to send a measurement signal to the mobile terminal through triggering the short message service; the positioning device can also send scheduling information for triggering the mobile terminal to send a measurement signal to the mobile terminal through triggering the call service; the positioning device may also send scheduling information to the mobile terminal by triggering an internet data service for triggering the mobile terminal to send the measurement signal.

Optionally, each measurement device may include a first measurement device and a second measurement device, and after the positioning apparatus receives the measurement result of each measurement device, the positioning apparatus may further send a first location movement request to the first measurement device, send a second location movement request to the second measurement device, and return to the step of sending the scheduling information to the mobile terminal by the positioning apparatus.

Specifically, when the positioning device is at t₃₀The first measurement device may send a first location movement request to the first measurement device and a second location movement request to the second measurement device after receiving a measurement result of the first measurement device and a measurement result of the second measurement device at a time, the first measurement device may move the first measurement device and send a first movement response message to the positioning apparatus after receiving the first location movement request, and the positioning apparatus may send a first movement response message at t after receiving the first movement response message sent by the first measurement device₃₁And sending scheduling information for triggering the mobile terminal to send the measurement signal to the mobile terminal again at the moment in a manner of triggering short message service, conversation and Internet data service, similarly, after the second measurement equipment moves according to the received second position movement request, moving the second measurement equipment and sending a second movement response message to the positioning device, and after the positioning device receives the second movement response message sent by the second measurement equipment, the positioning device can send the second movement response message to the mobile terminal at t₃₁And sending scheduling information for triggering the mobile terminal to send the measuring signal to the mobile terminal again at any moment in a mode of triggering short messages, conversation and Internet data services.

In the step S103, when the positioning apparatus obtains the position information of the mobile terminal based on the measurement results of the plurality of measurement signals of each measurement device, the positioning apparatus may obtain the position information of the mobile terminal in a different manner according to the content included in the measurement results of the plurality of measurement signals of each measurement device.

Specifically, when the measurement result includes the time delay information and the position information of the measurement device, the positioning apparatus may obtain the position information of the mobile terminal in the following manner one, and when the measurement result includes the time delay information, the received power, and the position information of the measurement device, the positioning apparatus may obtain the position information of the mobile terminal in the following manner two.

In a first mode

When the position information of the mobile terminal is obtained in this way, the measurement result may include time delay information and position information of the measurement device, and if there are two measurement devices, the following relational expression of the measurement signal may be constructed according to the measurement result of the measurement signal with respect to the ith measurement signal.

Wherein x is_i1，y_i1，z_i1For the position information, x, of the first measuring device measured by the first measuring device when the mobile terminal transmits the ith measuring signal_i2，y_i2，z_i2The position information of the second measuring equipment measured by the second measuring equipment when the mobile terminal sends the ith measuring signal, x, y and z are the position information of the mobile terminal when the mobile terminal sends the ith measuring signal, T_i1Is the first time delay, T, measured by the first measuring equipment when the mobile terminal sends the ith measuring signal_i2And c is the speed of light, which is the second time delay measured by the second measuring equipment when the mobile terminal sends the ith measuring signal.

Then, the positioning device can obtain the position information of the mobile terminal according to the relational expression of the plurality of measurement signals.

Specifically, when the positioning device is at t₁After the scheduling information is sent to the mobile terminal at any moment, the positioning device can acquire the first time delay T sent by the first measuring equipment₁₁And first position information (x)₁₁，y₁₁，z₁₁) And at t₁At that moment, the positioning device can obtain the second time delay T sent by the second measuring equipment₁₂And second position information (x)₁₂，y₁₂，z₁₂)。

According to a first time delay T₁₁First position information (x)₁₁，y₁₁，z₁₁) A second time delay T₁₂Second position information (x)₁₂，y₁₂，z₁₂) The following polynomial (1) can be obtained.

When the positioning device is at t₂After the scheduling information is sent to the mobile terminal again at the moment, the positioning device can obtain the first time delay T sent by the first measuring equipment₂₁And first position information (x)₂₁，y₂₁，z₂₁) And at t₂At that moment, the positioning device can also obtain a second time delay T sent by the second measuring equipment₂₂And second position information (x)₂₂，y₂₂，z₂₂)。

According to a first time delay T₂₁First position information (x)₂₁，y₂₁，z₂₁) A second time delay T₂₂Second position information (x)₂₂，y₂₂，z₂₂) The following polynomial (2) can be obtained.

When the positioning device is at t₃After the scheduling information is sent to the mobile terminal again at the moment, the positioning device can obtain the first time delay T sent by the first measuring equipment₃₁And first position information (x)₃₁，y₃₁，z₃₁) And at t₃At that moment, the positioning device can also obtain a second time delay T sent by the second measuring equipment₃₂And second position information (x)₃₂，y₃₂，z₃₂)。

According to a first time delay T₃₁First position information (x)₃₁，y₃₁，z₃₁) A second time delay T₃₂Second position information (x)₃₂，y₃₂，z₃₂) The following polynomial (3) can be obtained.

When the positioning device is at t₄After the scheduling information is sent to the mobile terminal again at the moment, the positioning device can obtain the first time delay T sent by the first measuring equipment₄₁And first position information (x)₄₁，y₄₁，z₄₁) And at t₄At that moment, the positioning device can also obtain a second time delay T sent by the second measuring equipment₄₂And second position information (x)₄₂，y₄₂，z₄₂)。

According to a first time delay T₄₁First position information (x)₄₁，y₄₁，z₄₁) A second time delay T₄₂Second position information (x)₄₂，y₄₂，z₄₂) The following polynomial (4) can be obtained.

By jointly solving the polynomial equation (1), the polynomial equation (2), the polynomial equation (3), and the polynomial equation (4), the value of the position information (x, y, z) of the mobile terminal can be obtained, and the position information of the mobile terminal can be obtained.

Mode two

When the position information of the mobile terminal is obtained in this way, the measurement result may include time delay information, received power, and position information of the measurement device, and then the position information of the terminal is determined by using the method flow shown in fig. 2.

S201, aiming at the same measuring signal, the positioning device determines a preliminary position area of the terminal according to the maximum receiving power in each measuring device.

S202, the positioning device can determine the maximum position area of the terminal according to the preliminary position areas of the plurality of measurement signals.

S203, the positioning device determines a plurality of position points from the maximum position area.

Specifically, the positioning device may determine the plurality of position points from the maximum position area in a gridding manner, and when the positioning device determines the plurality of position points from the maximum position area in a gridding manner, the position information of one grid is the position information of the corresponding position point, and of course, the positioning device may also determine the plurality of position points from the maximum position area in other manners.

S204, the positioning device determines the distance deviation sum of the position points according to the time delay information of the plurality of measurement signals and the position information of the measurement equipment aiming at each position point.

S205, the positioning device determines the position information of the terminal according to the sum of the distance deviations of the plurality of position points.

Specifically, the positioning device determines in advance the maximum transmitting power of the mobile terminal in the current communication system, for example, when the current communication system of the mobile terminal is GSM900, the maximum transmitting power of the mobile terminal is 33 dBm; when the current communication mode of the mobile terminal is GSM1800, the maximum transmitting power of the mobile terminal is 30 dBm; when the current communication mode of the mobile terminal is WCDMA (Wideband Code Division Multiple Access), the maximum transmitting power of the mobile terminal is 21dBm-24 dBm; when the current communication mode of the mobile terminal is LTE (Long Term Evolution), the maximum transmission power of the mobile terminal is 23 dBm. Then, the positioning device may determine the power path loss according to the maximum received power in each measurement device and the predetermined maximum transmission power of the mobile terminal in the current communication system. And finally, the positioning device determines the initial position area of the terminal by adopting a channel model according to the power path loss.

After determining the preliminary location area of the terminal, the positioning device may determine a maximum location area of the terminal according to a plurality of preliminary location areas of the terminal, and then the positioning device determines a plurality of location points from the maximum location area and determines location information of each location point.

The positioning device can determine the sum of the distance deviations of any one position point by using the following formula according to the position information of each position point.

Wherein x is_k，y_k，z_kIs the position information of the kth position point, x_j1，y_j1，z_j1For the position information, x, of the first measuring device measured by the first measuring device when the mobile terminal transmits the jth measuring signal_j2，y_j2，z_j2For the position information, T, of the second measuring device measured by the second measuring device when the mobile terminal transmits the jth measuring signal_j1Is a first time delay, T, measured by the first measuring device when the mobile terminal transmits the jth measuring signal_j2A second time delay measured by a second measuring device when the mobile terminal sends a jth measuring signal, c is the speed of light, S_kIs the sum of the distance deviations of the kth position point.

After determining the distance deviation sum of each position point, the positioning device takes the minimum distance deviation sum corresponding to the position point as the position information of the mobile terminal.

The following explains the determination of the location information of the mobile terminal in the second mode in detail by using a specific example.

In this example, assuming that the mobile terminal is the mobile terminal D and assuming that the current communication system of the mobile terminal D is LTE, it may be determined that the maximum transmission power of the mobile terminal D is 23 dBm.

Further assume that the first measurement device is measurement device A, the second measurement device is measurement device B, and at t₅₀At the moment, the received power measured by the measuring equipment A is-70 dBm, and the received power measured by the measuring equipment B is-50 dBm, so that the received power at t can be calculated₅₀At this time, the power path loss of mobile terminal D measured by measuring device a is 93dBm, and the power loss of mobile terminal D measured by measuring device B is 73dBm, since at t₅₀At the moment, the power loss 93dBm of mobile terminal D measured by measuring device a is greater than the power loss 53dBm of mobile terminal D measured by measuring device B, and therefore, at t₅₀At the moment, a channel model is adopted by using the power path loss 93dBm of the mobile terminal measured by the measuring equipment a, and a preliminary location area 1 of the mobile terminal a from the measuring equipment a can be calculated. Further assume, at t₅₀And (3) at the moment, the value calculated by adopting a channel model by using the power loss 93dBm of the mobile terminal measured by the measuring equipment A is 10 meters, a circular area can be determined by using the measuring equipment A as the center of a circle and using the 10 meters as the radius, and the circular area is used as the initial position area 1 of the mobile terminal D.

Further assume that at t₅₁At the moment, the received power measured by the measuring equipment A is-60 dBm, and the received power measured by the measuring equipment B is-40 dBm, so that the received power at t can be calculated₅₁At this time, the power path loss of mobile terminal D measured by measuring device a is 83dBm, and the power loss of mobile terminal D measured by measuring device B is 63dBm, since this is at t₅₁At the moment, the power loss 83dBm of mobile terminal D measured by measuring device a is greater than the power loss 63dBm of mobile terminal D measured by measuring device B, and therefore, at t₅₁At this time, a preliminary location area 2 of the mobile terminal a from the measuring device a may be calculated by using a channel model with a power path loss of 83dBm of the mobile terminal measured by the measuring device a. Further assume, at t₅₁The power loss of the mobile terminal measured by the measuring device A at the time is 83dBm in the channel modeIf the calculated value is 15 meters, another circular area can be determined by taking the measuring device a as the center of a circle and taking the radius of 15 meters as the radius, and the circular area is taken as the preliminary location area 2 of the mobile terminal D.

After the preliminary location area 1 and the preliminary location area 2 are determined, the preliminary location area 1 and the preliminary location area 2 are combined into one location area 12, and the combined location area 12 is used as the maximum location area of the mobile terminal D. After the merged location area 12 is taken as the maximum location area of the mobile terminal D, the merged location area 12 may be gridded, and each grid in the gridding is taken as a location point. Further, it is assumed that the position information of the grid 1 is (x), and the four grids obtained by gridding the combined position area 12 are respectively grid 1, grid 2, grid 3, and grid 4₁，y₁，z₁) The position information of the grid 2 is (x)₂，y₂，z₂) The position information of the grid 3 is (x)₃，y₃，z₃) The position information of the grid 4 is (x)₄，y₄，z₄)。

Further assume that measuring device A is at t₅₀The position information measured at the moment is (x)₅₁，y₅₁，z₅₁) At t, the measuring device A₅₀The time delay information measured at the moment is T₅₁At t, the measuring device B₅₀The position information measured at the moment is (x)₅₂，y₅₂，z₅₂) With measuring device B at t₅₀The time delay information measured at the moment is T₅₂. And measuring device A is at t₅₁The position information measured at the moment is (x)₆₁，y₆₁，z₆₁) At t, the measuring device A₅₁The time delay information measured at the moment is T₆₁At t, the measuring device B₅₁The position information measured at the moment is (x)₆₁，y₆₁，z₆₁) At t, the measuring device B₅₁The time delay information measured at the moment is T₆₂。

For grid 1, according toPosition information (x) of grid 1₁，y₁，z₁) Measuring device A at t₅₀Measuring its own position information (x) at a time₅₁，y₅₁，z₅₁) Time delay information T₅₁At t, the measuring device B₅₀The position information measured at the moment is (x)₅₂，y₅₂x₆₁，z₅₂) The time delay information is T₅₂And measuring device A at t₅₁The position information measured at the moment is (x)₆₁，y₆₁，z₆₁) The time delay information is T₆₁At t, the measuring device B₅₁The position information measured at the moment is (x)₆₂，y₆₂，z₆₂) The time delay information is T₆₂The distance deviation sum S of grid 1 can be calculated by using the formula for calculating the distance deviation sum of any position point₁The following are:

for mesh 2, from the position information (x) of mesh 2₂，y₂，z₂) Measuring device A at t₅₀Measuring its own position information (x) at a time₅₁，y₅₁，z₅₁) Time delay information T₅₁At t, the measuring device B₅₀The position information measured at the moment is (x)₅₂，y₅₂，z₅₂) The time delay information is T₅₂And measuring device A at t₅₁The position information measured at the moment is (x)₆₁，y₆₁，z₆₁) The time delay information is T₆₁At t, the measuring device B₅₁The position information measured at the moment is (x)₆₂，y₆₂，z₆₂) The time delay information is T₆₂The distance deviation sum S of the grid 2 can be calculated by using the formula for calculating the distance deviation sum of any position point₂The following are:

for mesh 3, from the position information (x) of mesh 3₃，y₃，z₃) Measuring device A at t₅₀Measuring its own position information (x) at a time₅₁，y₅₁，z₅₁) Time delay information T₅₁At t, the measuring device B₅₀The position information measured at the moment is (x)₅₂，y₅₂，z₅₂) The time delay information is T₅₂And measuring device A at t₅₁The position information measured at the moment is (x)₆₁，y₆₁，z₆₁) The time delay information is T₆₁At t, the measuring device B₅₁The position information measured at the moment is (x)₆₂，y₆₂，z₆₂) The time delay information is T₆₂The distance deviation sum S of the grid 3 can be calculated by using the formula for calculating the distance deviation sum of any position point₃The following are:

for grid 4, from grid 4 location information (x)₄，y₄，z₄) Measuring device A at t₅₀Measuring its own position information (x) at a time₅₁，y₅₁，z₅₁) Time delay information T₅₁At t, the measuring device B₅₀The position information measured at the moment is (x)₅₂，y₅₂，z₅₂) The time delay information is T₅₂And measuring device A at t₅₁The position information measured at the moment is (x)₆₁，y₆₁，z₆₁) The time delay information is T₆₁At t, the measuring device B₅₁The position information measured at the moment is (x)₆₂，y₆₂，z₆₂) The time delay information is T₆₂The distance deviation sum S of the grid 4 can be calculated by using the formula for calculating the distance deviation sum of any one position point₄Such asThe following:

calculating the distance deviation sum S of grid 1₁Distance deviation of grid 2 and S₂Distance deviation of grid 3 and S₃Distance deviation of grid 4 and S₄Then, the distance deviation of grid 1 is summed with S₁Distance deviation of grid 2 and S₂Distance deviation of grid 3 and S₃Distance deviation of grid 4 and S₄Comparing to determine S₁、S₂、S₃、S₄Minimum of (1), suppose S₁、S₂、S₃、S₄Middle S₁If the value of (c) is the minimum, the position information (x) of the grid 1 is set₁，y₁，z₁) As the position information of the mobile terminal D, that is, the position information of the mobile terminal D is (x)₁，y₁，z₁)。

Thus far, the position information (x) of the mobile terminal D calculated by the second method is adopted₁，y₁，z₁)。

Whether the position information of the mobile terminal is determined by the first method or the second method, the measurement result needs to include the time delay information, and the time delay information in the measurement result can be obtained by the following three methods.

Method 1

And the measuring equipment measures the channel estimation power spectrum when the mobile terminal sends a signal after receiving the scheduling information of the positioning device, and takes the maximum channel estimation value on the channel estimation power spectrum as the time delay information measured by the measuring equipment.

Method two

The measuring equipment measures the channel estimation power spectrum when the mobile terminal sends a signal after receiving the scheduling information of the positioning device, and determines the time delay information according to the channel estimation value on the channel estimation power spectrum and the following formula.

Wherein, T is the time delay information measured by the measurement device, pdp (q) is the q-th channel estimation value on the channel estimation power spectrum, q is a positive integer and q is not less than 1, and n is the total number of channel estimation values on the channel estimation power spectrum.

Method III

And the measuring equipment measures a channel estimation power spectrum when the mobile terminal sends a signal after receiving the scheduling information of the positioning device, and takes a channel estimation value corresponding to a first point which is larger than a first threshold value on the channel estimation power spectrum as the time delay information measured by the measuring equipment.

It should be noted that, in the embodiment of the present invention, the measurement device may obtain the position information of the measurement device through a Global Positioning System (GPS), and of course, the position information of the measurement device may also be obtained through other manners.

As can be seen from the above, after the mobile terminal transmits the measurement signal, the positioning apparatus can receive the measurement result of each measurement device, and then the positioning apparatus can obtain the position information of the mobile terminal according to the measurement results of the plurality of measurement signals of each measurement device, so that the mobile terminal can be accurately positioned even if the power of the mobile terminal is adjusted in real time.

Based on the same technical concept, an embodiment of the present invention further provides a mobile terminal positioning apparatus, as shown in fig. 3, the apparatus includes:

a triggering module 301, configured to send scheduling information to a mobile terminal, where the scheduling information is used to trigger the mobile terminal to send a measurement signal;

a receiving module 302, configured to receive measurement results of each measurement device for a same measurement signal;

a positioning module 303, configured to obtain location information of the mobile terminal according to measurement results of the multiple measurement signals of each measurement device.

Preferably, each of the measuring devices includes a first measuring device and a second measuring device;

the receiving module 302, after receiving the measurement result of each measurement device, is further configured to: instructing the triggering module 301 to send a first location movement request to the first measurement device and send a second location movement request to the second device; and returns to send the scheduling information to the mobile terminal.

Preferably, ,

the measurement result comprises time delay information and position information of the measurement equipment; the positioning module 303 is specifically configured to:

for the same measuring signal, constructing a relational expression of the measuring signal according to the measuring result of the measuring signal

Obtaining the position information of the mobile terminal according to the relational expression of the plurality of measurement signals;

wherein x is_i1，y_i1，z_i1For the position information, x, of the first measuring device measured by the first measuring device when the mobile terminal transmits the ith measuring signal_i2，y_i2，z_i2The position information of the second measuring equipment measured by the second measuring equipment when the mobile terminal sends the ith measuring signal, x, y and z are the position information of the mobile terminal when the mobile terminal sends the ith measuring signal, T_i1Is the first time delay, T, measured by the first measuring equipment when the mobile terminal sends the ith measuring signal_i2As a second measuring deviceAnd c is the speed of light, and the second time delay measured when the mobile terminal sends the ith measuring signal.

Preferably, ,

the measurement result comprises time delay information, receiving power and position information of the measurement equipment;

the positioning module 303 is specifically configured to:

aiming at the same measuring signal, determining a preliminary position area of the terminal according to the maximum receiving power in each measuring device;

determining a maximum location area of the terminal according to preliminary location areas of the plurality of measurement signals;

determining a plurality of location points from the maximum location area;

for each position point, determining the sum of the distance deviations of the position point according to the time delay information of the plurality of measuring signals and the position information of the measuring equipment;

and determining the position information of the terminal according to the sum of the distance deviations of the plurality of position points.

Preferably, ,

the measuring equipment measures a channel estimation power spectrum when the mobile terminal sends a signal after receiving scheduling information of the positioning device, and takes a maximum channel estimation value on the channel estimation power spectrum as time delay information; or,

the measuring equipment measures a channel estimation power spectrum when the mobile terminal sends a signal after receiving scheduling information of the positioning device, and determines time delay information according to a channel estimation value on the channel estimation power spectrum and the following formula;

wherein, T is time delay information, PDP (q) is a q-th channel estimation value on a channel estimation power spectrum, q is a positive integer and q is more than or equal to 1, and n is the total number of the channel estimation values on the channel estimation power spectrum; or,

and the measuring equipment measures a channel estimation power spectrum when the mobile terminal sends a signal after receiving the scheduling information of the positioning device, and takes a channel estimation value corresponding to a first point which is larger than a first threshold value on the channel estimation power spectrum as time delay information.

Preferably, the positioning module 303 is specifically configured to:

predetermining the maximum transmitting power of the mobile terminal under the current communication system;

determining power path loss according to the maximum receiving power in each measuring device and the predetermined maximum transmitting power of the mobile terminal in the current communication system;

and determining a preliminary position area of the terminal by adopting a channel model according to the power path loss.

Preferably, the positioning module 303 is specifically configured to:

position information (x) for the kth position point_k，y_k，z_k) Determining the sum of the distance deviations of the kth position point by adopting the following formula;

wherein x is_k，y_k，z_kIs the position information of the kth position point, x_j1，y_j1，z_j1For the position information, x, of the first measuring device measured by the first measuring device when the mobile terminal transmits the jth measuring signal_j2，y_j2，z_j2For the position information, T, of the second measuring device measured by the second measuring device when the mobile terminal transmits the jth measuring signal_j1Is a first time delay, T, measured by the first measuring device when the mobile terminal transmits the jth measuring signal_j2And c is the speed of light, which is the second time delay measured by the second measuring equipment when the mobile terminal sends the jth measuring signal.

The communication system applicable to the embodiment of the invention includes but is not limited to: global system for Mobile communications (GSM), Code Division Multiple Access (CDMA) IS-95, Code Division Multiple Access (CDMA) 2000, time Division-Synchronous Code Division Multiple Access (TD-SCDMA), Wideband Code Division Multiple Access (WCDMA), time Division duplex-Long Term Evolution (TDD LTE), frequency division duplex-Long Term Evolution (FDD LTE), Long Term Evolution-enhanced (Long Term Evolution-Advanced, LTE-Advanced), Personal Handy-phone system (PHS), Wireless Fidelity (WiFi) specified by 802.11 series protocols, Worldwide Interoperability for Microwave Access (WiMAX), and various Wireless communication systems for future Evolution.

A mobile terminal in embodiments of the present invention may be a wireless terminal, which may be a device providing voice and/or data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem. Wireless terminals, which may be mobile terminals such as mobile telephones (or "cellular" telephones) and computers having mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, may communicate with one or more core networks via a Radio Access Network (e.g., RAN). For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. A wireless Terminal may also be referred to as a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), an Access Point (Access Point), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), a User Device (User Device), or a User Equipment (User Equipment).

To sum up, a method and an apparatus for positioning a mobile terminal according to an embodiment of the present invention include: the method comprises the steps that a positioning device sends scheduling information to a mobile terminal, wherein the scheduling information is used for triggering the mobile terminal to send a measurement signal; aiming at the same measuring signal, the positioning device receives the measuring result of each measuring device; and the positioning device obtains the position information of the mobile terminal according to the measurement results of the plurality of measurement signals of each measurement device. It can be seen that, after the mobile terminal sends the measurement signal, the positioning apparatus can receive the measurement result of each measurement device, and then the positioning apparatus can obtain the location information of the mobile terminal according to the measurement results of the plurality of measurement signals of each measurement device, so that the mobile terminal can be accurately positioned even if the power of the mobile terminal is adjusted in real time.

It should be apparent to those skilled in the art that embodiments of the present invention may be provided as a method, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (14)

1. A mobile terminal positioning method is characterized by comprising the following steps:

the method comprises the steps that a positioning device sends scheduling information to a mobile terminal, wherein the scheduling information is used for triggering the mobile terminal to send a measurement signal;

aiming at the same measuring signal, the positioning device receives the measuring result of each measuring device;

and the positioning device obtains the position information of the mobile terminal according to the measurement results of the plurality of measurement signals of each measurement device.

2. The method of claim 1, wherein the measurement devices comprise a first measurement device and a second measurement device;

after the positioning device receives the measurement result of each measurement device, the method further comprises:

the positioning device sends a first position moving request to the first measuring equipment and sends a second position moving request to the second equipment; and returning to the step that the positioning device sends the scheduling information to the mobile terminal.

3. The method of claim 2,

the measurement result comprises time delay information and position information of the measurement equipment; the positioning apparatus obtains the position information of the mobile terminal according to the measurement results of the plurality of measurement signals of each measurement device, and includes:

for the same measuring signal, constructing a relational expression of the measuring signal according to the measuring result of the measuring signal

Obtaining the position information of the mobile terminal according to the relational expression of the plurality of measurement signals;

wherein x is_i1，y_i1，z_i1For the position information, x, of the first measuring device measured by the first measuring device when the mobile terminal transmits the ith measuring signal_i2，y_i2，z_i2The position information of the second measuring equipment measured by the second measuring equipment when the mobile terminal sends the ith measuring signal, x, y and z are the position information of the mobile terminal when the mobile terminal sends the ith measuring signal, T_i1Is the first time delay, T, measured by the first measuring equipment when the mobile terminal sends the ith measuring signal_i2And c is the speed of light, which is the second time delay measured by the second measuring equipment when the mobile terminal sends the ith measuring signal.

4. The method of claim 2,

the measurement result comprises time delay information, receiving power and position information of the measurement equipment;

the positioning device obtains the position information of the mobile terminal according to the measurement results of the signals to be measured of the measurement devices, and the method comprises the following steps:

aiming at the same measuring signal, the positioning device determines a preliminary position area of the terminal according to the maximum receiving power in each measuring device;

the positioning device determines the maximum position area of the terminal according to the preliminary position areas of the plurality of measurement signals;

the positioning device determining a plurality of location points from the maximum location area;

the positioning device determines the sum of the distance deviations of the position points according to the time delay information of the plurality of measurement signals and the position information of the measurement equipment aiming at each position point;

and the positioning device determines the position information of the terminal according to the sum of the distance deviations of the plurality of position points.

5. The method of claim 3 or 4,

the measuring equipment measures a channel estimation power spectrum when the mobile terminal sends a signal after receiving scheduling information of the positioning device, and takes a maximum channel estimation value on the channel estimation power spectrum as time delay information; or,

the measuring equipment measures a channel estimation power spectrum when the mobile terminal sends a signal after receiving scheduling information of the positioning device, and determines time delay information according to a channel estimation value on the channel estimation power spectrum and the following formula;

$T=\frac{\underset{q}{\overset{n}{\Σ}}PDP\left(q\right)*q}{\underset{q}{\overset{n}{\Σ}}PDP\left(q\right)}$

wherein, T is time delay information, PDP (q) is a q-th channel estimation value on a channel estimation power spectrum, q is a positive integer and q is more than or equal to 1, and n is the total number of the channel estimation values on the channel estimation power spectrum; or,

and the measuring equipment measures a channel estimation power spectrum when the mobile terminal sends a signal after receiving the scheduling information of the positioning device, and takes a channel estimation value corresponding to a first point which is larger than a first threshold value on the channel estimation power spectrum as time delay information.

6. The method of claim 4, wherein the determining, by the positioning apparatus, a preliminary location area of the terminal based on the maximum received power in the measurement devices comprises:

the positioning device determines the maximum transmitting power of the mobile terminal in the current communication system in advance;

the positioning device determines power path loss according to the maximum receiving power in each measuring device and the predetermined maximum transmitting power of the mobile terminal in the current communication system;

and determining a preliminary position area of the terminal by adopting a channel model according to the power path loss.

7. The method of claim 4, wherein the positioning device determines, for each location point, a sum of distance deviations for the location point based on the time delay information of the plurality of measurement signals and the location information of the measurement device, comprising:

position information (x) of the positioning device for the kth position point_k，y_k，z_k) Determining the sum of the distance deviations of the kth position point by adopting the following formula;

$S_k=\underset{j}{\overset{n}{\Σ}}{\[\sqrt{{(x_k-x_{j1})}^2+{(y_k-y_{j1})}^2+{(z_k-z_{j1})}^2}-\sqrt{{(x_k-x_{j2})}^2+{(y_k-y_{j2})}^2+{(z_k-z_{j2})}^2}-(T_{j1}-T_{j2})*c\]}^2$

wherein x is_k，y_k，z_kIs the position information of the kth position point, x_j1，y_j1，z_j1For the position information, x, of the first measuring device measured by the first measuring device when the mobile terminal transmits the jth measuring signal_j2，y_j2，z_j2For the position information, T, of the second measuring device measured by the second measuring device when the mobile terminal transmits the jth measuring signal_j1Is a first time delay, T, measured by the first measuring device when the mobile terminal transmits the jth measuring signal_j2And c is the speed of light, which is the second time delay measured by the second measuring equipment when the mobile terminal sends the jth measuring signal.

8. A mobile terminal positioning apparatus, comprising:

the mobile terminal comprises a triggering module, a measurement module and a processing module, wherein the triggering module is used for sending scheduling information to the mobile terminal, and the scheduling information is used for triggering the mobile terminal to send a measurement signal;

the receiving module is used for receiving the measuring result of each measuring device aiming at the same measuring signal;

and the positioning module is used for obtaining the position information of the mobile terminal according to the measurement results of the plurality of measurement signals of each measurement device.

9. The positioning apparatus of claim 8, wherein each of the measuring devices comprises a first measuring device and a second measuring device;

after receiving the measurement result of each measurement device, the receiving module is further configured to: instructing the trigger module to send a first location movement request to the first measurement device and a second location movement request to the second device; and returns to send the scheduling information to the mobile terminal.

10. The positioning device of claim 9,

the measurement result comprises time delay information and position information of the measurement equipment; the positioning module is specifically configured to:

for the same measuring signal, constructing a relational expression of the measuring signal according to the measuring result of the measuring signal

Obtaining the position information of the mobile terminal according to the relational expression of the plurality of measurement signals;

wherein x is_i1，y_i1，z_i1For the position information, x, of the first measuring device measured by the first measuring device when the mobile terminal transmits the ith measuring signal_i2，y_i2，z_i2The position information of the second measuring equipment measured by the second measuring equipment when the mobile terminal sends the ith measuring signal, x, y and z are the position information of the mobile terminal when the mobile terminal sends the ith measuring signal, T_i1Is the first time delay, T, measured by the first measuring equipment when the mobile terminal sends the ith measuring signal_i2And c is the speed of light, which is the second time delay measured by the second measuring equipment when the mobile terminal sends the ith measuring signal.

11. The positioning device of claim 9,

the measurement result comprises time delay information, receiving power and position information of the measurement equipment;

the positioning module is specifically configured to:

aiming at the same measuring signal, determining a preliminary position area of the terminal according to the maximum receiving power in each measuring device;

determining a maximum location area of the terminal according to preliminary location areas of the plurality of measurement signals;

determining a plurality of location points from the maximum location area;

for each position point, determining the sum of the distance deviations of the position point according to the time delay information of the plurality of measuring signals and the position information of the measuring equipment;

and determining the position information of the terminal according to the sum of the distance deviations of the plurality of position points.

12. The positioning device according to claim 10 or 11,

the measuring equipment measures a channel estimation power spectrum when the mobile terminal sends a signal after receiving scheduling information of the positioning device, and takes a maximum channel estimation value on the channel estimation power spectrum as time delay information; or,

the measuring equipment measures a channel estimation power spectrum when the mobile terminal sends a signal after receiving scheduling information of the positioning device, and determines time delay information according to a channel estimation value on the channel estimation power spectrum and the following formula;

$T=\frac{\underset{q}{\overset{n}{\Σ}}PDP\left(q\right)*q}{\underset{q}{\overset{n}{\Σ}}PDP\left(q\right)}$

wherein, T is time delay information, PDP (q) is a q-th channel estimation value on a channel estimation power spectrum, q is a positive integer and q is more than or equal to 1, and n is the total number of the channel estimation values on the channel estimation power spectrum; or,

and the measuring equipment measures a channel estimation power spectrum when the mobile terminal sends a signal after receiving the scheduling information of the positioning device, and takes a channel estimation value corresponding to a first point which is larger than a first threshold value on the channel estimation power spectrum as time delay information.

13. The positioning device of claim 11, wherein the positioning module is specifically configured to:

predetermining the maximum transmitting power of the mobile terminal under the current communication system;

determining power path loss according to the maximum receiving power in each measuring device and the predetermined maximum transmitting power of the mobile terminal in the current communication system;

and determining a preliminary position area of the terminal by adopting a channel model according to the power path loss.

14. The positioning device of claim 11, wherein the positioning module is specifically configured to:

position information (x) for the kth position point_k，y_k，z_k) Determining the sum of the distance deviations of the kth position point by adopting the following formula;

$S_k=\underset{j}{\overset{n}{\Σ}}{\[\sqrt{{(x_k-x_{j1})}^2+{(y_k-y_{j1})}^2+{(z_k-z_{j1})}^2}-\sqrt{{(x_k-x_{j2})}^2+{(y_k-y_{j2})}^2+{(z_k-z_{j2})}^2}-(T_{j1}-T_{j2})*c\]}^2$

wherein x is_k，y_k，z_kIs the position information of the kth position point, x_j1，y_j1，z_j1For the position information, x, of the first measuring device measured by the first measuring device when the mobile terminal transmits the jth measuring signal_j2，y_j2，z_j2For the position information, T, of the second measuring device measured by the second measuring device when the mobile terminal transmits the jth measuring signal_j1Is a first time delay, T, measured by the first measuring device when the mobile terminal transmits the jth measuring signal_j2And c is the speed of light, which is the second time delay measured by the second measuring equipment when the mobile terminal sends the jth measuring signal.