CN114143803A

CN114143803A - Method and device for detecting positioning integrity

Info

Publication number: CN114143803A
Application number: CN202010923965.3A
Authority: CN
Inventors: 李健翔; 全海洋; 傅婧; 张大钧; 王可
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2022-03-04
Anticipated expiration: 2040-09-04
Also published as: CN114143803B

Abstract

The application provides a method and a device for detecting the integrity of positioning, wherein the method comprises the following steps: sending an integrity measurement request message to a base station, wherein the integrity measurement request message carries an integrity measurement item; receiving an integrity measurement value sent by a base station, wherein the integrity measurement value is detected by an integrity measurement item; and determining the positioning integrity according to whether the integrity measurement value meets the integrity index corresponding to the positioning service. According to the scheme of the application, the reliability of the positioning service can be improved, the application positioning integrity in 5G is realized, the service quality of the positioning service is improved, and the loss of lives and properties caused by errors of a positioning system is reduced.

Description

Method and device for detecting positioning integrity

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for detecting location integrity.

Background

With the development of the fifth generation mobile communication system, as the 5G system is oriented to the vertical industry, the positioning service based on the mobile communication network is widely used in the scenes of automatic driving, industrial internet of things and the like.

The positioning integrity is the capability of a positioning enhancement system, and when the positioning service is used in the scenes of automatic driving, industrial internet of things and the like, the positioning accuracy and the positioning error range are further required. Therefore, positioning integrity is of paramount importance.

At present, how to apply positioning integrity in 5G is an urgent problem to be solved.

Disclosure of Invention

The present application is directed to solving, at least to some extent, one of the technical problems in the related art.

An embodiment of a first aspect of the present application provides a method for detecting Location integrity, where the method is used for a Location Management Function (LMF), and the method includes:

sending an integrity measurement request message to a base station, wherein the integrity measurement request message carries an integrity measurement item;

receiving an integrity measurement value sent by a base station, wherein the integrity measurement value is detected by the integrity measurement item;

and determining the positioning integrity according to whether the integrity measurement value meets the integrity index corresponding to the positioning service.

Optionally, after receiving the integrity measurement value transmitted by the base station, the method further includes: for at least one TRP of the base station receiving the positioning reference signal, determining a measurement error of the at least one TRP according to an integrity measurement value of the positioning reference signal; generating a TRP list according to the measurement error of the at least one TRP, wherein the TRP list is used for indicating abnormal TRPs with the measurement error larger than or equal to a threshold value; and sending an alarm notification to the base station, wherein the alarm notification carries the TRP list.

Optionally, after receiving the integrity measurement value transmitted by the base station, the method further includes: determining a measurement error of at least one TRP of the positioning reference signals according to the integrity measurement value of the positioning reference signals for the at least one TRP; updating a positioning assistance data list according to the measurement error of the at least one TRP, wherein the positioning assistance data list is used for indicating positioning candidate TRPs.

Optionally, the updating the positioning assistance data list according to the measurement error of the at least one TRP comprises: removing an outlier TRP of the at least one TRP, the measurement error of which is larger than the threshold, from an original positioning assistance data list to obtain the updated positioning assistance data list.

Optionally, before sending the integrity measurement request message to the base station, the method further includes: receiving a positioning service request, wherein the positioning service request carries service information requesting positioning; and determining a corresponding integrity index according to the service information.

Optionally, after determining the positioning integrity of the terminal according to whether the integrity measurement value meets an integrity index corresponding to the positioning service, the method further includes: sending a positioning service response message to the equipment sending the positioning service request; wherein, the location service response message carries: time indication information for indicating the time when the base station measures the integrity measurement value; and/or indication information indicating whether the positioning position of the terminal is reliable; and/or indication information of whether the positioning algorithm fails; and/or an indication of whether the location integrity is abnormal.

Optionally, the integrity measurement value sent by the base station includes: the method comprises the steps of obtaining an integrity measurement value by measuring an integrity measurement item for a positioning reference signal sent by a terminal, obtaining an integrity measurement value by monitoring a synchronous state for at least one TRP of a base station and obtaining an integrity measurement value by detecting an antenna calibration state for at least one TRP of the base station.

Optionally, the integrity measurement item for the positioning reference signal measurement sent by the terminal is determined according to a positioning algorithm adopted by the LMF; wherein the integrity measurement term comprises: one or more combinations of positioning reference signal time difference, positioning reference signal received power, positioning reference signal received signal-to-noise ratio, positioning reference signal received noise power and a frame number corresponding to the positioning reference signal; or, the integrity measurement term includes: the positioning reference signal receiving direction angle, the positioning reference signal transmitting direction angle and one or more combinations of the corresponding beam information, the positioning reference signal receiving power, the positioning reference signal receiving signal-to-noise ratio, the positioning reference signal receiving noise power and the frame number corresponding to the positioning reference signal.

Optionally, the alarm notification further carries: and the time indication information is used for indicating the time for the base station to measure the integrity measurement value.

Optionally, the determining the integrity of the positioning according to whether the integrity measurement value meets an integrity index corresponding to the positioning service includes: determining a positioning integrity parameter according to the integrity measurement value; and if the positioning integrity parameter is larger than the integrity index, determining that the positioning integrity is abnormal.

The embodiment of the second aspect of the present application provides another method for detecting location integrity, which is used for a base station, and the method includes:

receiving an integrity measurement request message sent by an LMF, wherein the integrity measurement request message carries an integrity measurement item;

detecting the integrity measurement item to obtain an integrity measurement value;

and sending the integrity measurement value to the LMF, wherein the integrity measurement value is used for determining the positioning integrity according to whether the integrity measurement value meets an integrity index corresponding to the positioning service.

Optionally, the detecting the integrity measurement item results in an integrity measurement value, including: receiving a positioning reference signal sent by the terminal by adopting at least one TRP; measuring the integrity measurement item according to a positioning reference signal received by the at least one TRP to obtain the integrity measurement value; or, monitoring the at least one TRP for a synchronization status to obtain the integrity measurement; alternatively, the at least one TRP detection antenna is calibrated to obtain the integrity measurement.

An embodiment of a third aspect of the present application provides an LMF, including a memory, a transceiver, a processor: a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

An embodiment of a fourth aspect of the present application provides a base station, including a memory, a transceiver, a processor: a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

An embodiment of a fifth aspect of the present application provides a positioning integrity detection apparatus, including:

a sending unit, configured to send an integrity measurement request message to a base station, where the integrity measurement request message carries an integrity measurement item;

the receiving unit is used for receiving the integrity measurement value sent by the base station, wherein the integrity measurement value is obtained by detecting an integrity measurement item;

and the determining unit is used for determining the positioning integrity according to whether the integrity measurement value meets the integrity index corresponding to the positioning service.

An embodiment of a sixth aspect of the present application provides another positioning integrity detection apparatus, including:

the receiving unit is used for receiving an integrity measurement request message sent by an LMF, wherein the integrity measurement request message carries an integrity measurement item;

the measuring unit is used for detecting the integrity measuring item to obtain an integrity measuring value;

and the sending unit is used for sending the integrity measurement value to the LMF, wherein the integrity measurement value is used for determining the positioning integrity according to whether the integrity measurement value meets an integrity index corresponding to the positioning service.

An embodiment of a seventh aspect of the present application proposes a processor-readable storage medium, which stores a computer program for causing a processor to execute the method of the embodiment of the first aspect.

An eighth aspect of the present application provides a processor-readable storage medium, which stores a computer program for causing a processor to execute the method of the second aspect.

One embodiment in the above application has the following advantages or benefits: the LMF is adopted to send the integrity measurement request message to the base station, receive the integrity measurement value sent by the base station, and further determine the positioning integrity according to whether the integrity measurement value meets the integrity index corresponding to the positioning service. Therefore, the application positioning integrity in 5G is realized, the reliability of positioning service is improved, and the life and property loss and legal liability brought by positioning system errors are reduced.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

Fig. 1 is a schematic flowchart of a method for detecting integrity of positioning according to an embodiment of the present disclosure;

fig. 2 is a schematic flowchart of another method for detecting location integrity according to an embodiment of the present disclosure;

fig. 3 is a schematic flowchart of another method for detecting location integrity according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram of a positioning architecture according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a positioning integrity detection apparatus according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of another positioning integrity detection apparatus according to an embodiment of the present disclosure;

FIG. 7 is a schematic illustration of an LMF provided by an embodiment of the present application;

fig. 8 is a schematic diagram of a base station according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

At present, a 5G system faces a vertical industry, and a positioning service based on a mobile communication network is widely used in the scenes of automatic driving, industrial internet of things and the like. Under these circumstances, there is a demand not only for the positioning accuracy but also for the range of the positioning error.

Positioning integrity is not applied under the current 3GPP (3rd Generation Partnership Project) architecture, and a cellular network positioning technology in related technologies may cause a situation that a large error is generated in position estimation in some cases when the accuracy of a positioning service meets an index requirement, and may cause serious consequences such as property safety loss if a certain positioning error is too large in a positioning service scene that affects life and property safety and may bring legal responsibility, so that a current cellular network positioning technology mechanism needs to be improved to avoid such an event.

The integrity is explained below.

The index of the error control of the position estimation within a certain range requirement is an integrity index requirement, and the integrity index requirement comprises the following parameters:

1. protection value (Protection Level, PL):

(1) integrity horizontal position protection value: indicating an upper limit of horizontal position estimation error, the probability of requiring horizontal position estimation error greater than PL should be lower than the risk requirement Irisk value, P (epsilon > PL) < Irisk.

(2) Integrity vertical position protection value: indicating an upper limit of vertical position estimation error, requiring that the probability that the vertical position estimation error is greater than PL should be lower than the risk requirement of Irisk value, P (epsilon > PL) < Irisk.

Where ε is the actual position estimation error.

2. Integrity Risk requirement (Irisk, Integrity risk)

Irisk is defined as follows, and integrity risk refers to the probability that a positioning error exceeds a tolerance limit.

3. Alarm threshold (Alert Limit, AL):

(1) alarm threshold for horizontal position

(2) Vertical position alarm threshold

Representing the maximum position estimate error values (horizontal and vertical) allowed for the system to function properly. If the positioning error exceeds a threshold in any dimension or equivalent dimension, the system considers the positioning as unavailable to the relevant application and initiates an alarm to protect the loss of integrity.

4. The horizontal position alarms the valid time.

5. The vertical position alarms for the valid time.

6. The reliability requirement indication comprises a plurality of dimensions such as horizontal dimension and vertical dimension, and is an indication that the service is required to support the integrity function.

The positioning integrity detection method provided by the embodiment of the application is applied to the positioning integrity detection of an uplink positioning scene, namely the uplink positioning integrity detection. In an uplink positioning scenario, in order to position a terminal, specifically, a terminal sends a positioning Reference Signal, each base station measures the positioning Reference Signal sent by the terminal, and an LMF positions the terminal according to a time difference or a phase difference of the positioning Reference Signal detected by each base station, where the positioning Reference Signal is an uplink positioning Reference Signal SRS (Sounding Reference Signal). In order to evaluate the integrity of terminal positioning in an uplink positioning scenario, a positioning integrity detection method proposed according to an embodiment of the present application is described below with reference to the accompanying drawings.

Fig. 1 is a schematic flowchart of a method for detecting location integrity according to an embodiment of the present disclosure.

The method of the embodiment of the present application is used for a location server LMF, and as shown in fig. 1, the method includes:

step 101, sending an integrity measurement request message to a base station, wherein the integrity measurement request message carries an integrity measurement item.

In this embodiment, the LMF sends an integrity measurement request message carrying an integrity measurement item to the base station, and the base station receives the integrity measurement request and sends an integrity measurement value to the LMF according to the integrity measurement request.

As an example, the integrity measurement term includes: one or more combinations of a positioning Reference Signal Time Difference (RSTD), a positioning Reference Signal Received Power (RSRP), a positioning reference Signal received Signal-to-Noise Ratio (Signal Noise Ratio, SNR), a positioning reference Signal received Noise Power, and a frame number corresponding to the positioning reference Signal. In this example, the RSTD, RSRP, SNR, received noise power, and frame number corresponding to four or more TRPs (Transmission Receive points) are measured within a set measurement window length or a predetermined measurement period.

As another example, the integrity measurement term includes: the positioning reference signal receiving direction angle, the positioning reference signal transmitting direction angle and one or more combinations of the corresponding beam information, the positioning reference signal receiving power, the positioning reference signal receiving signal-to-noise ratio, the positioning reference signal receiving noise power and the frame number corresponding to the positioning reference signal. In this example, within a set measurement window length or an agreed measurement period, the received uplink direction angle or the base station transmission direction angle corresponding to four or more TRPs, the corresponding RSRP, SNR, received noise power, and the corresponding frame number are measured. Where the frame number is used to provide a time reference.

Step 102, receiving the integrity measurement value transmitted by the base station.

Wherein, the integrity measurement value is detected by the integrity measurement item. For example, the base station performs a measurement integrity measurement item on a positioning reference signal sent by the terminal to obtain an integrity measurement value, and sends the integrity measurement value to the LMF, or the base station monitors at least one TRP of the base station for the integrity measurement value obtained in a synchronization state, or the base station detects at least one TRP of the base station for the integrity measurement value obtained in an antenna calibration state. The integrity measurement item of the positioning reference signal measurement sent by the terminal is determined according to a positioning algorithm adopted by the LMF.

The method of the embodiment is applied to a terminal-assisted positioning scenario based on an NR (New Radio, New air interface) cellular network uplink positioning reference signal, and performs position calculation by an LMF according to a measurement value.

And 103, determining the positioning integrity according to whether the integrity measurement value meets an integrity index corresponding to the positioning service.

In this embodiment, the LMF determines the location integrity parameter according to the integrity measurement value. Further, comparing the positioning integrity parameter with a preset integrity index, and if the positioning integrity parameter is greater than the integrity index, determining that the positioning integrity is abnormal; otherwise, determining that the positioning integrity is normal.

As an example, the integrity indicator is a corresponding integrity indicator level selected according to the type of location service. And the LMF calculates an integrity protection value PL according to the integrity measurement value, wherein error variances of all error sources are calculated according to the error source model, and the error variances are summed to obtain the PL, and the error sources comprise the sum of network synchronization errors, terminal measurement errors, antenna calibration errors and the like. Further, PL is compared with AL set in advance.

Optionally, the LMF calculates a horizontal position protection value according to the integrity measurement value, presets a horizontal position alarm threshold AL, and compares the horizontal position protection value PL with the horizontal position alarm threshold AL. Optionally, the LMF calculates a vertical position protection value according to the integrity measurement value, presets a vertical position alarm threshold AL, and compares the vertical position protection value PL with the vertical position alarm threshold AL.

In this example, if PL is greater than the alarm threshold, it is determined that the positioning integrity is abnormal, thereby implementing positioning integrity detection.

According to the method for detecting the positioning integrity, the LMF sends an integrity measurement request message to the base station, and receives the integrity measurement value sent by the base station. And determining the positioning integrity according to whether the integrity measurement value meets the integrity index corresponding to the positioning service. Therefore, the positioning integrity of the application in the 5G is realized, the positioning integrity detection based on the cellular network positioning system is realized, the reliability of the positioning service is improved, the method is suitable for various positioning service scenes which affect the safety of the life and property and bring legal responsibility, and the life and property loss and legal responsibility caused by the positioning system error are reduced.

Based on the foregoing embodiment, further, fig. 2 is a schematic flowchart of another method for detecting location integrity provided in an embodiment of the present application, where the method in the embodiment of the present application is used in an LMF, and as shown in fig. 2, the method includes:

step 201, sending an integrity measurement request message to the base station, where the integrity measurement request message carries an integrity measurement item.

Step 202, receiving the integrity measurement value transmitted by the base station.

Wherein, the integrity measurement value is detected by the integrity measurement item.

The explanation of

steps

101 and 102 in the foregoing embodiment is also applicable to

steps

201 and 202, and is not described here again.

In one embodiment of the present application, the LMF receives a location service request and determines a corresponding integrity indicator according to the service information. The location service request carries service information requesting location, the location service request may be sent by a location client, and different services may correspond to different service information.

Step 203, for at least one TRP of the base station receiving the positioning reference signal, determining a measurement error of the at least one TRP according to the integrity measurement value of the positioning reference signal.

And step 204, generating a TRP list according to the measurement error of at least one TRP, wherein the TRP list is used for indicating abnormal TRPs with the measurement error larger than or equal to a threshold value.

In this embodiment, the base station includes one or more TRPs, and the TRPs are used to receive a positioning reference signal sent by a terminal. After receiving the integrity measurement value, the LMF determines at least one measurement error of the TRP according to the integrity measurement value, compares the measurement error of each TRP with a threshold value, takes the TRP with the measurement error larger than or equal to the threshold value as an abnormal TRP, and adds the abnormal TRP to a TRP list.

As an example, if there is a jump in the integrity measurement value of a certain TRP within its measurement period, and the jump is greater than a preset magnitude and lasts for a period of time, the TRP is added to the TRP list.

As another example, the integrity measurement value is predicted by recursive average, the predicted value is compared with the actually received measurement value, and if the actual measurement value differs from the predicted value by more than or equal to a preset threshold, for example, 3db, the TRP measurement quality is considered to be in problem, and the TRP is added to the TRP list.

Step 205, sending an alarm notification to the base station, wherein the alarm notification carries the TRP list.

Optionally, the alarm notification further carries: and the time indication information is used for indicating the time when the base station measures the integrity measurement value.

For example, after receiving the integrity measurement value, the LMF performs recursive averaging or statistical averaging of the TRP levels according to the integrity measurement value and the TRP to which the LMF belongs, determines the TRP having a measurement error greater than a preset value from at least one TRP, and sends a detection alarm to notify a corresponding base station. Wherein, detecting the alarm content comprises: frame number, TRP list. The TRP list includes single or multiple TRP information such as Physical Cell Identity (PCI) and NR Cell frequency point information.

In one embodiment of the application, after receiving the integrity measurement value sent by the base station, the LMF determines the measurement error of at least one TRP of the received positioning reference signal according to the integrity measurement value of the positioning reference signal. Updating a positioning assistance data list according to a measurement error of at least one TRP, wherein the positioning assistance data list is used for indicating positioning candidate TRPs. For example, an abnormal TRP of the at least one TRP having a measurement error greater than a threshold is deleted from the original positioning assistance data list to obtain an updated positioning assistance data list.

As another possible implementation manner, after the TRP list is generated in step 204, an abnormal TRP in the TRP list may be removed from the positioning assistance data list, so as to cancel the abnormal TRP as a candidate TRP of the uplink positioning technology.

And step 206, determining the positioning integrity according to whether the integrity measurement value meets the integrity index corresponding to the positioning service.

The explanation of step 103 in the foregoing embodiment is also applicable to step 206, and is not described here again.

Step 207, sending a location service response message to the device sending the location service request.

Wherein the positioning service response message comprises: the time indication information is used for indicating the time for the base station to measure the integrity measurement value; and/or indicating information whether the positioning position of the terminal is reliable or not; and/or indication information of whether the positioning algorithm fails; and/or an indication of whether the location integrity is abnormal.

Optionally, if the LMF determines that the location integrity is abnormal, the location system is in an unreliable state, and the LMF sends a location unreliable alarm to the core network AMF (access and mobility management function) to indicate that the location system is unreliable at this time, where the content of the unreliable alarm includes: the associated positioning system is unreliable, and the associated positioning method fails according to the frame number.

According to the positioning integrity detection method, the measurement error of at least one TRP is determined through the integrity measurement value of the positioning reference signal, the TRP list of abnormal TRPs used for indicating that the measurement error is larger than or equal to the threshold value is generated according to the measurement error of the at least one TRP, the measurement quality detection of the TRP is realized, and the abnormal TRP of which the measurement error is larger than the threshold value in the at least one TRP is deleted from the original positioning auxiliary data list, so that the extreme and bad points of position estimation can be limited, the reliability of positioning service is further improved, and the life and property loss and legal liability brought by the positioning system error are reduced. In addition, when the positioning integrity is abnormal, an alarm is sent out, so that the positioning system can take extra measures to guarantee the quality of the positioning service request, for example, a new positioning system is replaced or a reliable positioning result is taken as the positioning service result, the influences of influencing the life and property safety and bearing legal responsibility caused by the adoption of an unreliable position result are avoided, and a series of positioning service requirements such as automatic driving, industrial internet of things and the like with higher requirements on the system reliability are met through the positioning integrity detection.

The positioning integrity detection method according to the embodiment of the present application is described below on the base station side.

Fig. 3 is a flowchart illustrating another method for detecting location integrity according to an embodiment of the present disclosure.

The method of the embodiment of the present application is applied to a base station, and as shown in fig. 3, the method includes:

step 301, receiving an integrity measurement request message sent by an LMF, where the integrity measurement request message carries an integrity measurement item.

In this embodiment, the base station receives an integrity measurement request message sent by the LMF.

Step 302, detecting the integrity measurement item to obtain an integrity measurement value.

In this embodiment, optionally, the base station uses at least one TRP to receive the positioning reference signal sent by the terminal, and measures the integrity measurement item according to the positioning reference signal received by the at least one TRP to obtain the integrity measurement value. Optionally, the base station monitors the synchronization status for at least one TRP to obtain an integrity measurement. Optionally, the base station detects the antenna calibration status for at least one TRP to obtain the integrity measurement. The integrity measurement item of the positioning reference signal measurement sent by the terminal is determined according to a positioning algorithm adopted by the LMF.

As an example, the integrity measurement term includes: one or more combinations of positioning reference signal time difference, positioning reference signal received power, positioning reference signal received signal-to-noise ratio, positioning reference signal received noise power and a frame number corresponding to the positioning reference signal. In this example, the RSTD, RSRP, SNR, received noise power, and frame number corresponding to four or more TRPs are measured within a set measurement window length or a predetermined measurement period.

Step 303, send the integrity measurement to the LMF.

And the integrity measurement value is used for determining the positioning integrity according to whether the integrity measurement value meets the integrity index corresponding to the positioning service. The above description of the embodiment for determining the integrity of the positioning based on the integrity measurement is also applicable to this embodiment and will not be described herein again.

In the method for detecting the integrity of positioning according to the embodiment, the base station receives the integrity measurement request message sent by the LMF, measures the integrity measurement item for the positioning reference signal sent by the terminal to obtain the integrity measurement value, and then sends the integrity measurement value to the LMF to determine the integrity of positioning according to whether the integrity measurement value meets the integrity index corresponding to the positioning service. Therefore, the method realizes the detection of the positioning integrity of the uplink positioning reference signal based on the cellular network positioning system, improves the reliability of the positioning service, is suitable for various positioning service scenes which affect the life and property safety and bring legal responsibility, and reduces the life and property loss and legal responsibility caused by the positioning system error.

Based on the above embodiments, fig. 4 shows a positioning architecture of NG-RAN (radio access network), where LMF is a positioning server, and is used to select a positioning method and trigger corresponding positioning measurement, and may calculate a positioning final result and accuracy. The NG-RAN is used for: and sending a positioning reference signal or carrying out positioning measurement based on auxiliary information. User Equipment (UE) is to: sending a positioning reference signal or performing positioning measurement based on auxiliary information; and also for calculating a final result and accuracy of the positioning based on the measurement results.

In order to implement the above embodiments, the present application further provides a positioning integrity detection apparatus.

Fig. 5 is a schematic structural diagram of a positioning integrity detection apparatus according to an embodiment of the present application, as shown in fig. 5, the apparatus includes: a transmitting unit 51, a receiving unit 52, and a determining unit 53.

The sending unit 51 is configured to send an integrity measurement request message to the base station, where the integrity measurement request message carries an integrity measurement item.

A receiving unit 52, configured to receive an integrity measurement value sent by the base station, where the integrity measurement value is detected by the integrity measurement item.

A determining unit 53, configured to determine the positioning integrity according to whether the integrity measurement value meets an integrity indicator corresponding to the positioning service.

Fig. 6 is a schematic structural diagram of another positioning integrity detection apparatus according to an embodiment of the present application, as shown in fig. 6, the apparatus includes: a receiving unit 61, a measuring unit 62 and a transmitting unit 63.

The receiving unit 61 is configured to receive an integrity measurement request message sent by an LMF, where the integrity measurement request message carries an integrity measurement item.

And the measuring unit 62 is used for detecting the integrity measurement item to obtain an integrity measurement value.

A sending unit 63, configured to send the integrity measurement value to the LMF, where the integrity measurement value is used to determine location integrity according to whether the integrity measurement value meets an integrity index corresponding to a location service.

Optionally, the measuring the integrity measurement item for the positioning reference signal sent by the terminal to obtain an integrity measurement value includes: receiving a positioning reference signal sent by the terminal by adopting at least one TRP; measuring the integrity measurement item according to a positioning reference signal received by the at least one TRP to obtain the integrity measurement value; or, monitoring the at least one TRP for a synchronization status to obtain the integrity measurement; alternatively, the at least one TRP detection antenna is calibrated to obtain the integrity measurement.

It should be noted that the above explanation of the embodiment of the method for detecting location integrity is also applicable to the apparatus for detecting location integrity of the present embodiment, and is not repeated herein.

The positioning integrity detection device of the embodiment of the application sends an integrity measurement request message to the base station through the LMF, and receives an integrity measurement value sent by the base station. And determining the positioning integrity according to whether the integrity measurement value meets the integrity index corresponding to the positioning service. Therefore, the positioning integrity of the application in the 5G is realized, the positioning integrity detection based on the cellular network positioning system is realized, the reliability of the positioning service is improved, the method is suitable for various positioning service scenes which affect the safety of the life and property and bring legal responsibility, and the life and property loss and legal responsibility caused by the positioning system error are reduced.

In order to implement the foregoing embodiments, an embodiment of the present application provides an LMF, including a memory, a transceiver, a processor: a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations: sending an integrity measurement request message to a base station, wherein the integrity measurement request message carries an integrity measurement item; receiving an integrity measurement value sent by a base station, wherein the integrity measurement value is detected by the integrity measurement item; and determining the positioning integrity according to whether the integrity measurement value meets the integrity index corresponding to the positioning service.

Fig. 7 is a schematic structural diagram of an LMF according to an embodiment of the present disclosure.

A transceiver 700 for receiving and transmitting data under the control of a processor 710.

Wherein in fig. 7, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 710, and various circuits, represented by memory 720, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 700 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 710 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 710 in performing operations.

The processor 710 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

In order to implement the foregoing embodiments, an embodiment of the present application further provides a base station, including a memory, a transceiver, and a processor: a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations: receiving an integrity measurement request message sent by an LMF, wherein the integrity measurement request message carries an integrity measurement item; detecting the integrity measurement item to obtain an integrity measurement value; and sending the integrity measurement value to the LMF, wherein the integrity measurement value is used for determining the positioning integrity according to whether the integrity measurement value meets an integrity index corresponding to the positioning service.

Fig. 8 is a schematic structural diagram of a base station according to an embodiment of the present application.

A transceiver 800 for receiving and transmitting data under the control of a processor 810.

Where in fig. 8, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 810, and various circuits, represented by memory 820, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 800 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 810 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 810 in performing operations.

The processor 810 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

It should be noted that the apparatus provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.

The terminal device referred to in the embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or another processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal device, for example, a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN). Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). The wireless terminal device may also be referred to as a system, 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 device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in this embodiment of the present application.

The base station related to the embodiment of the application can comprise a plurality of cells for providing service for the terminal. A base station may also be referred to as an access point, or a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to exchange received air frames with Internet Protocol (IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or a Code Division Multiple Access (CDMA), may be a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), may be an evolved Node B (eNB or e-NodeB) in a Long Term Evolution (LTE) System, may be a 5G Base Station (gbb) in a 5G network architecture (next evolution System), may be a Home evolved Node B (HeNB), a relay Node (relay Node), a Home Base Station (femto), a pico Base Station (pico Base Station), and the like, which are not limited in the embodiments of the present application. In some network architectures, a network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

In order to implement the foregoing embodiments, the present application provides a processor-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the processor implements the above-mentioned method for detecting location integrity.

In order to implement the foregoing embodiments, the present application provides a processor-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the processor implements any one of the above-mentioned location integrity detection methods.

The processor-readable storage medium of the embodiments of the present application may be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, nonvolatile memory (NAND FLASH), Solid State Disks (SSDs)), etc.

In the embodiment of the present application, "and/or" describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

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

Claims

1. A method for location integrity detection, the method being used for a location server (LMF) and comprising:

2. The method of claim 1, wherein the receiving the integrity measurement value transmitted by the base station further comprises:

for at least one TRP of the base station receiving the positioning reference signal, determining a measurement error of the at least one TRP according to an integrity measurement value of the positioning reference signal;

generating a TRP list according to the measurement error of the at least one TRP, wherein the TRP list is used for indicating abnormal TRPs with the measurement error larger than or equal to a threshold value;

and sending an alarm notification to the base station, wherein the alarm notification carries the TRP list.

3. The method of claim 1, wherein the receiving the integrity measurement value transmitted by the base station further comprises:

determining a measurement error of at least one TRP of the positioning reference signals according to the integrity measurement value of the positioning reference signals for the at least one TRP;

updating a positioning assistance data list according to the measurement error of the at least one TRP, wherein the positioning assistance data list is used for indicating positioning candidate TRPs.

4. The method of claim 3, wherein the updating the positioning assistance data list according to the measurement error of the at least one TRP comprises:

removing an outlier TRP of the at least one TRP, the measurement error of which is larger than the threshold, from an original positioning assistance data list to obtain the updated positioning assistance data list.

5. The method of any of claims 1-4, wherein before sending the integrity measurement request message to the base station, the method further comprises:

receiving a positioning service request, wherein the positioning service request carries service information requesting positioning;

and determining a corresponding integrity index according to the service information.

6. The method of claim 5, wherein after determining the positioning integrity of the terminal according to whether the integrity measurement value satisfies an integrity indicator corresponding to the positioning service, the method further comprises:

sending a positioning service response message to the equipment sending the positioning service request;

wherein, the location service response message carries:

time indication information for indicating the time when the base station measures the integrity measurement value;

and/or indicating information whether the positioning position of the terminal is reliable or not;

and/or indication information of whether the positioning algorithm fails;

and/or an indication of whether the location integrity is abnormal.

7. The method of any of claims 1-4, wherein the integrity measurement sent by the base station comprises: the method comprises the steps of obtaining an integrity measurement value by measuring an integrity measurement item for a positioning reference signal sent by a terminal, obtaining an integrity measurement value by monitoring a synchronous state for at least one TRP of a base station and obtaining an integrity measurement value by detecting an antenna calibration state for at least one TRP of the base station.

8. The method of claim 7, wherein the step of determining the location integrity includes the step of determining the location integrity of the mobile terminal,

the integrity measurement item of the positioning reference signal measurement sent by the terminal is determined according to the positioning algorithm adopted by the LMF;

wherein the integrity measurement term comprises: one or more combinations of positioning reference signal time difference, positioning reference signal received power, positioning reference signal received signal-to-noise ratio, positioning reference signal received noise power and a frame number corresponding to the positioning reference signal;

or, the integrity measurement term includes: the positioning reference signal receiving direction angle, the positioning reference signal transmitting direction angle and one or more combinations of corresponding beam information, positioning reference signal receiving power, positioning reference signal receiving signal-to-noise ratio, positioning reference signal receiving noise power and a frame number corresponding to the positioning reference signal.

9. The method of claim 2, wherein the alert notification further carries:

and the time indication information is used for indicating the time for the base station to measure the integrity measurement value.

10. The method according to any of claims 1 to 4, wherein the determining the positioning integrity according to whether the integrity measurement value satisfies an integrity indicator corresponding to the positioning service comprises:

determining a positioning integrity parameter according to the integrity measurement value;

and if the positioning integrity parameter is larger than the integrity index, determining that the positioning integrity is abnormal.

11. A method for detecting positioning integrity, the method being used for a base station and comprising:

12. The method of claim 11, wherein the detecting the integrity measurement results in an integrity measurement comprising:

receiving a positioning reference signal sent by a terminal by adopting at least one TRP; measuring the integrity measurement item according to a positioning reference signal received by the at least one TRP to obtain the integrity measurement value;

or, monitoring the at least one TRP for a synchronization status to obtain the integrity measurement;

alternatively, the at least one TRP detection antenna is calibrated to obtain the integrity measurement.

13. The method according to claim 12, wherein the integrity measurement item of the positioning reference signal measurement sent by the terminal is determined according to a positioning algorithm employed by the LMF;

or, the integrity measurement term includes: the positioning reference signal receiving direction angle, the positioning reference signal transmitting direction angle and one or more combinations of the corresponding beam information, the positioning reference signal receiving power, the positioning reference signal receiving signal-to-noise ratio, the positioning reference signal receiving noise power and the frame number corresponding to the positioning reference signal.

14. An LMF comprising a memory, a transceiver, and a processor;

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

15. The LMF of claim 14 wherein the receiving the integrity measurement sent by the base station further comprises:

16. The LMF of claim 14 wherein the receiving the integrity measurement sent by the base station further comprises:

17. The LMF of claim 16 wherein said updating a positioning assistance data list based on a measurement error of said at least one TRP comprises:

18. An LMF according to any of claims 14-17 wherein prior to sending the integrity measurement request message to the base station, further comprising:

19. The LMF of claim 18, wherein after determining the location integrity of the terminal according to whether the integrity measurement value satisfies an integrity indicator corresponding to the location service, further comprising:

wherein, the location service response message carries:

and/or indication information of whether the positioning algorithm fails;

and/or an indication of whether the location integrity is abnormal.

20. An LMF according to any of claims 14-17 wherein the base station transmitted integrity measurements include: the method comprises the steps of obtaining an integrity measurement value by measuring an integrity measurement item for a positioning reference signal sent by a terminal, obtaining an integrity measurement value by monitoring a synchronous state for at least one TRP of a base station and obtaining an integrity measurement value by detecting an antenna calibration state for at least one TRP of the base station.

21. The LMF of claim 20,

22. The LMF of claim 15 wherein the alert notification further carries:

23. The LMF according to any of claims 14-17, wherein the determining the location integrity according to whether the integrity measurement value satisfies an integrity indicator corresponding to the location service comprises:

24. A base station comprising a memory, a transceiver, and a processor;

25. The base station of claim 24, wherein the detecting the integrity measurement results in an integrity measurement comprising:

receiving a positioning reference signal sent by the terminal by adopting at least one TRP; measuring the integrity measurement item according to a positioning reference signal received by the at least one TRP to obtain the integrity measurement value;

26. The base station of claim 25, wherein the integrity measurement item for the positioning reference signal measurement sent by the terminal is determined according to a positioning algorithm employed by the LMF;

27. A positioning integrity detection apparatus, comprising:

28. A positioning integrity detection apparatus, comprising:

29. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the method of any one of claims 1-10.

30. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the method of any one of claims 11-13.