WO2021218666A1

WO2021218666A1 - Positioning correction method and apparatus

Info

Publication number: WO2021218666A1
Application number: PCT/CN2021/087759
Authority: WO
Inventors: 张大钧; 任晓涛
Original assignee: 大唐移动通信设备有限公司
Priority date: 2020-04-28
Filing date: 2021-04-16
Publication date: 2021-11-04
Also published as: CN113573229A; CN113573229B

Abstract

The present application relates to the technical field of communications, and provides a positioning correction method and apparatus, for improving positioning precision and positioning accuracy. The method comprises: a first device first generates an error correction parameter (ECP) according to reference information; the first device then sends the ECP to a second device so that the second device performs positioning on a target device on the basis of a first positioning measured value of the target device subjected to ECP correction. The first device generates an ECP according to reference information and the second device performs correction according to a first positioning measured value of the ECP to the target device, so that the positioning precision and positioning accuracy are improved.

Description

Method and device for positioning correction

Cross-references to related applications

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 202010348646.4, and the application name is "a positioning correction method and device" on April 28, 2020, the entire content of which is incorporated into this application by reference .

Technical field

This application relates to the field of communication technology, and provides a positioning correction method and device.

Background technique

With the development of science and technology and the application of technologies such as autonomous driving and industrial Internet of Things in real life, more and more terminal devices adopt the method of base station positioning to determine their own location information.

Specifically, the base station receives the positioning reference signal of the terminal device or sends the positioning reference signal to the terminal device, obtains the measurement value related to the terminal device, and sends the measurement value to the location management function entity (Location Management Function, LMF) Calculate the position in the process.

However, the position information calculated by the above method has low positioning accuracy, which affects the positioning accuracy. In view of this, a positioning correction method and device are proposed in the embodiments of the present application.

Summary of the invention

The embodiments of the present application provide a positioning correction method and device to improve positioning accuracy and positioning accuracy.

A positioning correction method provided by an embodiment of the present application, applied to a first device, includes:

The first device generates an error correction parameter (Error Correction Parameter, ECP) according to the reference information;

The first device sends the ECP to the second device, so that the second device locates the target device based on the first positioning measurement value of the target device corrected by the ECP.

Optionally, the first device generating the ECP according to the reference information includes:

The first device generates an ECP according to the difference between the estimated position of the IM reference device and the actual position;

Wherein, the IM reference device and the target device are in the coverage area of the same base station.

Optionally, before the first device generates the ECP, it further includes:

Receiving, by the first device, the estimated position of the IM reference device generated by the LMF according to the second positioning measurement value;

The second positioning measurement value is determined by the base station according to the received positioning reference signal of the IM reference device or the positioning reference signal sent to the IM reference device.

Optionally, if the first device is the base station and the reference device is the IM reference device, the positioning reference signal is an uplink positioning reference signal; or,

If the first device is the IM reference device and the reference device is the IM reference device, the positioning reference signal is a downlink positioning reference signal.

Optionally, the ECP includes at least:

The correction value of the second positioning measurement value;

The error range of the second positioning measurement value;

It is determined whether the estimated position of the IM reference device meets the preset integrity monitoring condition.

Optionally, the sending of the ECP to the second device by the first device includes:

The first device sends the ECP to the second device through a specific network interface.

Optional, include:

If the first device is a serving base station or a non-serving base station, and the second device is the LMF, the specific network interface is a New Radio Positioning Protocol Annex (NRPPa) or a long-term evolution positioning protocol interface ( Long Term Evolution Positioning Protocol Annex, LPPa), the non-serving base station is a base station used to assist the serving base station to provide positioning services; or,

If the first device is the non-serving base station and the second device is the serving base station, the non-serving base station sends the ECP to the serving base station through X2 or Xn; or,

If the first device is the IM reference device and the second device is the LMF or user equipment UE, the specific network interface is one of NRPPa, LPPa, LPP, or (Radio Resource Control, RRC).

Optionally, the reference information is assistance data sent by a reference base station;

The target device is within the coverage area of the reference base station.

Optionally, the first device and the second device are both the LMF.

In the second aspect, an embodiment of the present application also provides a positioning correction method for a target device, which is applied to a second device, and includes:

The second device corrects the first positioning measurement value of the target device according to the ECP sent by the first device;

The second device generates the estimated position of the target device based on the corrected first positioning measurement value.

Optionally, it further includes:

If the second device receives ECPs sent by multiple first devices, the second device generates a corresponding reference ECP based on each ECP;

The second device corrects the first positioning measurement value of the target device according to the reference ECP.

Optionally, the second device generates a corresponding reference ECP based on each ECP, including:

If each ECP is the correction value of the second positioning measurement value or the error range of the second positioning measurement value, the second device uses the average value or weighted average value of each ECP as the reference ECP; or,

If each ECP is to determine whether the estimated position of the IM reference device meets the preset integrity monitoring condition, the second device performs a logical AND operation or a logical OR operation on each ECP, and uses the calculation result as the all Refer to ECP for the description.

In a third aspect, an embodiment of the present application also provides a positioning correction device, which is applied to the first device, and includes:

The error generating unit is used to generate ECP according to the reference information;

The sending unit is configured to send the ECP to a second device, so that the second device locates the target device based on the first positioning measurement value of the target device corrected by the ECP.

Optionally, the ECP is generated according to the reference information, and the error generating unit is configured to:

Generate ECP based on the difference between the estimated position of the IM reference device and the actual position;

Optionally, before generating the ECP, the error generating unit is further configured to:

Receiving the estimated position of the IM reference device generated by the LMF according to the second positioning measurement value;

Optionally, the ECP includes at least:

The correction value of the second positioning measurement value;

The error range of the second positioning measurement value;

Optionally, the ECP is sent to the second device, and the sending unit is configured to:

The ECP is sent to the second device through a specific network interface.

Optionally, if the first device is a serving base station or a non-serving base station, and the second device is the LMF, the specific network interface is NRPPa or LPPa, and the non-serving base station is used to assist the serving base station A base station that provides location services; or,

If the first device is the IM reference device and the second device is the LMF or user equipment UE, the specific network interface is one of NRPPa, LPPa, LPP, or RRC.

The target device is within the coverage area of the reference base station.

Optionally, the first device and the second device are both the LMF.

In a fourth aspect, an embodiment of the present application also provides a positioning correction method for a target device, which is applied to a second device, and includes:

The correction unit is configured to correct the first positioning measurement value of the target device according to the error correction parameter ECP sent by the first device;

The positioning unit is configured to generate an estimated position of the target device based on the corrected first positioning measurement value.

Optionally, the correction unit is further configured to:

If ECPs sent by multiple first devices are received, based on each ECP, a corresponding reference ECP is generated;

According to the reference ECP, the first positioning measurement value of the target device is corrected.

Optionally, based on each ECP, a corresponding reference ECP is generated, and the correction unit is configured to:

If each ECP is the correction value of the second positioning measurement value or the error range of the second positioning measurement value, then the average or weighted average of the various ECPs is used as the reference ECP; or,

If each ECP is to determine whether the estimated position of the IM reference device meets the preset integrity monitoring condition, a logical AND operation or a logical OR operation is performed on each ECP, and the calculation result is used as the reference ECP.

In the fifth aspect, a first device provided by an embodiment of the present application includes a processor, a memory, and a transceiver;

Memory, used to store computer programs;

A transceiver, used to send and receive data under the control of the processor;

The processor is configured to read the computer program in the memory and perform the following operations:

Generate ECP based on reference information;

The ECP is sent to the second device, so that the second device locates the target device based on the first positioning measurement value of the target device corrected by the ECP.

Optionally, the processor is specifically configured to:

Optionally, the processor is further configured to:

Before the first device generates the ECP, receiving the estimated position of the IM reference device generated by the positioning management function entity LMF according to the second positioning measurement value;

Wherein, the second positioning measurement value is determined by the base station according to the received positioning reference signal of the IM reference device or the positioning reference signal sent to the IM reference device.

Optionally, the ECP includes at least:

The correction value of the second positioning measurement value;

The error range of the second positioning measurement value;

Optionally, the processor is specifically configured to:

The ECP is sent to the second device through a specific network interface.

Optionally, if the first device is a serving base station or a non-serving base station, and the second device is the LMF, then the specific network interface is NRPPa or LPPa, and the non-serving base station is used to assist the Serving base station A base station that provides location services; or,

The target device is within the coverage area of the reference base station.

Optionally, the first device and the second device are both the LMF.

In a sixth aspect, a second device provided by an embodiment of the present application includes a processor, a memory, and a transceiver;

Memory, used to store computer programs;

Correct the first positioning measurement value of the target device according to the ECP sent by the first device;

Based on the corrected first positioning measurement value, an estimated position of the target device is generated.

Optionally, the processor is further configured to:

Optionally, the processor is specifically configured to:

In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, which includes program code. When the program product runs on a computer, the program code is used to make the computer perform any of the above-mentioned positioning corrections. The method or the steps of the positioning correction method for the target device.

The beneficial effects of this application are as follows:

The positioning correction method and device provided in the embodiments of the present application include the first device first generating an ECP based on the reference information; the first device then sends the ECP to the second device, so that the second device is based on the target corrected by the ECP The first positioning measurement value of the device to locate the target device. The first device generates the ECP according to the reference information, and the second device corrects the first positioning measurement value of the target device according to the ECP to improve positioning accuracy and positioning accuracy.

Other features and advantages of the present application will be described in the following description, and partly become obvious from the description, or understood by implementing the present application. The purpose and other advantages of this application can be realized and obtained through the structure specified in the written description, claims, and drawings.

Description of the drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The exemplary embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation of the application. In the attached picture:

FIG. 1 is a schematic flowchart of a positioning correction method according to an embodiment of the application;

Figure 2a is a schematic diagram of the architecture of the first embodiment;

FIG. 2b is a schematic diagram of the positioning correction process in the first embodiment; FIG.

Figure 3a is a schematic diagram of the architecture of the second embodiment;

FIG. 3b is a schematic flowchart of the positioning correction in the second embodiment;

FIG. 4a is a schematic diagram of the architecture of the third embodiment;

FIG. 4b is a schematic flowchart of the positioning correction in the third embodiment;

FIG. 5a is a schematic diagram of the architecture of the fourth embodiment;

FIG. 5b is a schematic diagram of the positioning correction process of the fourth embodiment;

FIG. 6 is a schematic flow diagram of positioning correction in specific embodiment 5;

FIG. 7 is a schematic structural diagram of a positioning correction device in an embodiment of the application;

FIG. 8 is a schematic structural diagram of a positioning correction device for a target device in an embodiment of the application;

FIG. 9 is a schematic diagram of the composition structure of a first device in an embodiment of the application;

FIG. 10 is a schematic diagram of the composition structure of a second device in an embodiment of the application.

Detailed ways

In order to make the purpose, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are of the present application. Part of the embodiments of the technical solution, but not all of the embodiments. Based on the embodiments described in the application documents, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of the technical solution of the application. In order to solve the problems of low positioning accuracy and poor positioning accuracy, referring to FIG. 1, an embodiment of the present application provides a positioning correction method, and the process of using this method to perform positioning correction is as follows:

S101: The first device generates an ECP according to the reference information;

S102: The first device sends the ECP to the second device;

S103: The second device corrects the first positioning measurement value of the target device according to the ECP sent by the first device;

S104: The second device generates an estimated position of the target device based on the corrected first positioning measurement value.

The target device in the embodiment of this application is User Equipment (UE) that proposes positioning requirements; the reference information may be the difference between the estimated position and the actual position of the Integrity Monitoring (IM) reference device, and There are two types of assistance data sent by the reference base station; the first device includes a serving base station, a non-serving base station, an IM reference device, and an LMF; the second device includes an LMF, a serving base station, and a UE. Among them, for the target device, it is within the coverage area of the same base station as the IM reference device, or it is within the coverage area of the reference base station. Several specific embodiments are provided below, which describe in detail the process of performing positioning correction on the UE using different first devices, second devices, and reference information.

Referring to FIG. 2a, a schematic diagram of the architecture of specific embodiment 1 is provided. In specific embodiment 1, the first device is a serving base station and a non-serving base station, the reference device is an IM reference device, and the second device is an LMF. In the first embodiment, N first devices may be included, and N is an integer greater than 1, and FIG. 2a only shows a case where two first devices are included. Referring to FIG. 2b, a schematic flow chart of the positioning correction according to the first embodiment is provided.

S201: The IM reference device sends the UL PRS to the serving base station and the non-serving base station according to the obtained configuration information of the uplink positioning reference signal (Up Line Positioning Reference Signal, UL PRS) parameter.

The IM reference device obtains UL PRS parameter configuration information from the serving base station or LMF, where the configuration information includes transmission time-frequency domain resources, bandwidth, Quasi Co-Location (QCL) beam indication information, and so on.

S202: The serving base station and the non-serving base station perform positioning measurement for the configured UL PRS parameters to obtain a second positioning measurement value.

The positioning measurement methods that can be used in the first embodiment include, but are not limited to, Up Line Time Difference of Arrival (UL TDOA) positioning, Up Line Angel of Arrival (UL AoA) positioning, and cell enhancement ID (Enhanced-Cell Idi, E-CID) positioning method. Therefore, in the first embodiment, the second positioning measurement value includes but is not limited to TDOA and AOA.

S203: The serving base station and the non-serving base station respectively generate an ECP based on the difference between the estimated position of the IM reference device generated by the LMF according to the second positioning measurement value and the actual position of the IM reference device.

In specific embodiment 1, the ECP may be one of the following three types:

Type 1: The correction value used to correct the second positioning measurement value of each UL PRS beam received by the base station.

Type 2: The error range of the second positioning measurement value of each UL PRS beam received by the base station.

For example, the error range of TDOA is (1-3)s.

Type 3: Determine whether the estimated location of the IM reference device meets the preset integrity monitoring conditions.

Specifically, the difference between the estimated position and the actual position of the IM reference device is calculated to obtain the horizontal position error value and the vertical position error value of the IM reference device;

If the probability that the horizontal position error value is greater than the integrity horizontal position threshold is lower than the low-risk requirement value, and the vertical position error value is greater than the probability that the integrity vertical position threshold value is lower than the low-risk requirement value, judge the estimation of the IM reference device The location meets the integrity monitoring conditions. Among them, the low-risk requirement value refers to the probability that the positioning error exceeds the tolerance limit.

If the horizontal position error value exceeds the horizontal position alarm threshold, and/or the vertical position error value exceeds the vertical position alarm threshold, it means that the positioning error exceeds the maximum horizontal position/vertical allowed when the system can work normally The error value of the position.

S204: The serving base station and the non-serving base station respectively send the ECP to the LMF through a specific network interface.

In the first embodiment, the specific network interface includes but is not limited to: NRPPa, LPPa, or other newly defined logical interfaces.

S205: The LMF corrects the first positioning measurement value of the UE according to the multiple ECPs sent by the serving base station and the non-serving base station.

Before step 201 is performed, the first positioning measurement value of the UE may be obtained according to the positioning measurement method described above. Similarly, the first positioning measurement value includes but is not limited to TDOA and AOA.

In the first embodiment, the LMF receives the ECPs sent by the serving base station and the non-serving base station respectively, and the LMF first generates a corresponding reference ECP based on each ECP; and then corrects the UE's first positioning measurement value according to the reference ECP.

Specifically, different ECP types have different ways of generating reference ECPs.

For Type 1 and Type 2 ECPs, LMF uses the average or weighted average of each ECP as the reference ECP;

For type three ECP, the LMF performs a logical AND or logical OR operation on each ECP, and uses the calculation result as the reference ECP.

If the LMF receives an ECP that does not meet the integrity monitoring conditions, it will also correct the first positioning measurement value according to the ECP, and generate the estimated position of the UE based on the corrected first positioning measurement value. The positioning error exceeds the maximum allowable horizontal position/vertical position error value when the system can work normally. Therefore, the system will send an alarm signal to the UE to inform that the reliability of the positioning result at this time is very low.

S206: The LMF generates an estimated position of the UE based on the corrected first positioning measurement value.

Referring to Figure 3a, a schematic diagram of the architecture of the second embodiment is provided. In the second embodiment, the first device is a serving base station and a non-serving base station, the reference device is an IM reference device, and the second device is a serving base station. In the second specific embodiment, N first devices may be included, and N is an integer greater than 1, and FIG. 3a only shows a case where two first devices are included. Referring to FIG. 3b, a schematic flowchart of the positioning correction of the second embodiment is provided.

S301: The IM reference device sends the UL PRS to the serving base station and the non-serving base station according to the acquired UL PRS parameter configuration information.

S302: The serving base station and the non-serving base station perform positioning measurement for the configured UL PRS parameters to obtain a second positioning measurement value.

S303: The serving base station and the non-serving base station respectively generate an ECP based on the difference between the estimated position of the IM reference device generated by the LMF according to the second positioning measurement value and the actual position of the IM reference device.

In the second embodiment, the ECP may be one of the following three types:

S304: The non-serving base station sends the ECP to the serving base station through a specific network interface.

In the second specific embodiment, the serving base station is a base station that estimates the location of the UE. Specific network interfaces include, but are not limited to, X2, Xn, and other newly defined logical interfaces. X2 and Xn refer to the access network equipment Evolved Node B (eNB) or base station equipment gNB in the 5g network. At the same time, the serving base station sends the ECP calculated by itself to the corresponding module through its own internal interface to perform subsequent operations.

S305: The serving base station corrects the first positioning measurement value of the UE according to multiple ECPs sent by itself and the non-serving base station.

Before performing step 301, the first positioning measurement value of the UE may be obtained according to the positioning measurement method described above. Similarly, the first positioning measurement value includes but is not limited to TDOA and AOA.

In the second embodiment, the serving base station receives the ECPs sent by itself and the non-serving base station respectively, and the serving base station first generates a corresponding reference ECP based on each ECP; and then corrects the UE's first positioning measurement value according to the reference ECP.

For type 1 and type 2 ECP, the serving base station uses the average value or weighted average value of each ECP as the reference ECP;

For type three ECP, the serving base station performs logical AND or logical OR operation on each ECP, and uses the calculation result as the reference ECP.

If the serving base station receives an ECP that does not meet the integrity monitoring conditions, it will also correct the first positioning measurement value according to the ECP, and generate the estimated position of the UE based on the corrected first positioning measurement value. The positioning error exceeds the maximum horizontal position/vertical position error value allowed when the system can work normally. Therefore, the system will send an alarm signal to the UE to inform that the reliability of the positioning result at this time is very low.

S306: The serving base station generates an estimated position of the UE based on the corrected first positioning measurement value.

Referring to FIG. 4a, a schematic diagram of the architecture of the third embodiment is provided. In the third embodiment, the first device is an IM reference device, the reference device is an IM reference device, and the second device is an LMF. In the third specific embodiment, N first devices may be included, and N is an integer greater than 1, and only one first device is included in FIG. 4a. Referring to FIG. 4b, a schematic flowchart of the positioning correction of the third embodiment is provided.

S401: The IM reference device sends the DL PRS to the serving base station and the non-serving base station according to the acquired downlink positioning reference signal (Down Line Positioning Reference Signal, DL PRS) parameter configuration information.

The IM reference device obtains the configuration information of the DL and PRS parameters from the serving base station or the LMF, and the configuration information includes transmission time-frequency domain resources, bandwidth, QCL beam indication information, and the like.

S402: The serving base station and the non-serving base station perform positioning measurement according to the sent DL PRS parameters to obtain a second positioning measurement value.

The positioning measurement methods that can be used in the third embodiment include, but are not limited to, Down Line Time Difference of Arrival (DL TDOA) positioning, Time of Arrival (TOA) positioning, and reference signal received power ( Reference Signal Receiving Power (RSRP) positioning. Therefore, in the third embodiment, the second positioning measurement value includes but is not limited to TDOA and TOA.

S403: The IM reference device generates an ECP based on the difference between the estimated position of the IM reference device generated by the LMF according to the second positioning measurement value and the actual position of the IM reference device.

In the third embodiment, the ECP may be one of the following three types:

Type 4: The correction value used to correct the second positioning measurement value of each DL PRS beam of the base station or the transmission receiving point (Transmission Receiving Point, TRP).

Type 5: The error range of the second positioning measurement value of each DL PRS beam of the base station or TRP.

Type 6: Determine whether the estimated location of the IM reference device meets the preset integrity monitoring conditions.

S404: The IM reference device sends the ECP to the LMF through a specific network interface.

In the third embodiment, the IM reference device may also send the ECP to the base station that estimates the location of the UE through a specific network interface. Specific network interfaces include but are not limited to NRPPa, LPPa, LPP, RRC or other newly defined logical interfaces.

S405: The LMF corrects the first positioning measurement value of the UE according to the ECP sent by the IM reference device.

Before performing step 401, the first positioning measurement value of the UE may be obtained according to the positioning measurement method described above. Similarly, the first positioning measurement value includes but is not limited to TDOA and AOA.

In the third embodiment, the base station that estimates the position of the UE may also correct the first positioning measurement value of the UE according to the ECP sent by the IM reference device. If the LMF or the base station that estimates the location of the UE receives the ECPs sent by multiple IM reference devices, the LMF or the base station that estimates the location of the UE first generates the corresponding reference ECP based on each ECP; then corrects the UE's first positioning measurement based on the reference ECP value.

For Type 4 and Type 5 ECP, LMF or the base station that estimates the location of the UE uses the average value or weighted average value of each ECP as the reference ECP;

For type 6 ECP, LMF or the base station that estimates the location of the UE performs a logical AND or logical OR operation on each ECP, and uses the calculation result as a reference ECP.

If the LMF or the base station that estimates the location of the UE receives an ECP that does not meet the integrity monitoring conditions, it will also correct the first positioning measurement value according to the ECP, and generate the UE's estimate based on the corrected first positioning measurement value Position, because the positioning error at this time exceeds the maximum horizontal position/vertical position error value allowed when the system can work normally, the system will send an alarm signal to the UE to inform that the reliability of the positioning result at this time is very low.

S406: The LMF generates an estimated position of the UE based on the corrected first positioning measurement value.

In the third embodiment, the base station that estimates the position of the UE may also generate the estimated position of the UE based on the corrected first positioning measurement value.

Referring to FIG. 5a, a schematic diagram of the architecture of the fourth embodiment is provided. In the fourth embodiment, the first device is an IM reference device, the reference device is an IM reference device, and the second device is a UE. In the fourth embodiment, N first devices may be included, and N is an integer greater than 1, and only one first device is included in FIG. 5a. Referring to FIG. 5b, a schematic flowchart of the positioning correction of the fourth embodiment is provided.

S501: The IM reference device sends the DL PRS to the serving base station and the non-serving base station according to the obtained configuration information of the DL PRS parameter.

S502: The serving base station and the non-serving base station perform positioning measurement according to the sent DL PRS parameters to obtain a second positioning measurement value.

The positioning measurement methods that can be used in the fourth embodiment include, but are not limited to, DL TDOA positioning, TOA positioning, and RSRP positioning. Therefore, in the fourth embodiment, the second positioning measurement value includes but is not limited to TDOA and TOA.

S503: The IM reference device generates an ECP based on the difference between the estimated location of the IM reference device generated by the LMF according to the second positioning measurement value and the actual location of the IM reference device.

In the fourth embodiment, the ECP may be one of the following three types:

Type 4: The correction value used to correct the second positioning measurement value of each DL PRS beam of the base station or TRP.

S504: The IM reference device sends the ECP to the LMF or the base station performing the transfer through a specific network interface, so that the LMF or the base station performing the transfer forwards the ECP to the UE.

In the fourth embodiment, the UE is a device for estimating its own position. Specific network interfaces include but are not limited to NRPPa, LPPa, LPP, RRC or other newly defined logical interfaces.

S505: The UE corrects the first positioning measurement value of the UE according to the ECP sent by the IM reference device.

Before step 501 is performed, the first positioning measurement value of the UE may be obtained according to the positioning measurement method described above. Similarly, the first positioning measurement value includes but is not limited to TDOA and AOA.

In specific embodiment 4, if the UE receives ECPs sent by multiple IM reference devices, the UE first generates a corresponding reference ECP based on each ECP; and then corrects the UE's first positioning measurement value according to the reference ECP.

For Type 4 and Type 5 ECP, the UE uses the average value or weighted average value of each ECP as the reference ECP;

For the type 5 ECP, the UE performs a logical AND or logical OR operation on each ECP, and uses the calculation result as a reference ECP.

If the UE receives an ECP that does not meet the integrity monitoring conditions, it will also correct the first positioning measurement value according to the ECP, and generate the UE’s estimated position based on the corrected first positioning measurement value. The positioning error exceeds the maximum allowable horizontal position/vertical position error value when the system can work normally. Therefore, the system will send an alarm signal to the UE to inform that the reliability of the positioning result at this time is very low.

S506: The UE generates an estimated position of the UE based on the corrected first positioning measurement value.

Referring to FIG. 6, a schematic flowchart of the positioning correction of the fifth embodiment is provided.

S601: The LMF generates an ECP according to the auxiliary data sent by the reference base station.

If the UE is within the overlap coverage of at least two base stations, any one of the at least two base stations is determined as a reference base station, and the reference base station performs online or offline monitoring with other base stations, or the reference base station passes and communicates with other base stations. Other base stations exchange information and obtain auxiliary data. The auxiliary data includes, but is not limited to, information such as time offsets between base stations or base station transmitter failures.

S602: The LMF sends the ECP to itself.

The LMF sends the ECP to the corresponding module through its internal interface for subsequent processing.

S603: The LMF corrects the first positioning measurement value of the UE according to the ECP.

Before performing step 601, the first positioning measurement value of the UE may be obtained according to the positioning measurement method described above. Similarly, the first positioning measurement value includes but is not limited to TDOA and AOA.

S604: The LMF generates an estimated position of the UE based on the corrected first positioning measurement value.

Based on the same inventive concept, an embodiment of the present application provides a positioning correction device. As shown in FIG. 7, it at least includes an error generating unit 701 and a sending unit 702, wherein,

The error generating unit 701 is configured to generate an ECP according to the reference information;

The sending unit 702 is configured to send the ECP to a second device, so that the second device locates the target device based on the first positioning measurement value of the target device corrected by the ECP.

Optionally, the ECP is generated according to the reference information, and the error generating unit 701 is configured to:

Optionally, before generating the ECP, the error generating unit 701 is further configured to:

Optionally, the ECP includes at least:

The correction value of the second positioning measurement value;

The error range of the second positioning measurement value;

Optionally, the ECP is sent to the second device, and the sending unit 702 is configured to:

The ECP is sent to the second device through a specific network interface.

If the first device is the IM reference device and the second device is the LMF or UE, the specific network interface is one of NRPPa, LPPa, LPP, or RRC.

The target device is within the coverage area of the reference base station.

Optionally, the first device and the second device are both the LMF.

Based on the same inventive concept, referring to FIG. 8, an embodiment of the present application also provides a positioning correction method for a target device, which is applied to a second device and includes at least a correction unit 801 and a positioning unit 802, wherein:

The correction unit 801 is configured to correct the first positioning measurement value of the target device according to the ECP sent by the first device;

The positioning unit 802 is configured to generate an estimated position of the target device based on the corrected first positioning measurement value.

Optionally, the correction unit 801 is further configured to:

Optionally, based on each ECP, a corresponding reference ECP is generated, and the correction unit 801 is configured to:

If each ECP is for judging whether the estimated position of the integrity monitoring IM reference device meets the preset integrity monitoring condition, then perform a logical AND operation or a logical OR operation on each ECP, and use the calculation result as the reference ECP.

In some possible implementation manners, an embodiment of the present application further provides a first device. As shown in FIG. 9, the first device 900 may at least include a processor 901, a memory 902, and a transceiver 903.

The memory 902 is used to store computer programs;

The transceiver 903 is configured to send and receive data under the control of the processor;

The processor 901 is configured to read the computer program in the memory and perform the following operations:

Generate ECP based on reference information;

Optionally, the processor 901 is specifically configured to:

Optionally, the processor 901 is further configured to:

Before the first device generates the ECP, receiving the estimated position of the IM reference device generated by the LMF according to the second positioning measurement value;

Optionally, the ECP includes at least:

The correction value of the second positioning measurement value;

The error range of the second positioning measurement value;

Optionally, the processor 901 is specifically configured to:

The ECP is sent to the second device through a specific network interface.

The target device is within the coverage area of the reference base station.

Optionally, the first device and the second device are both the LMF.

Wherein, in FIG. 9, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 901 and various circuits of the memory represented by the memory 902 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface provides the interface. The transceiver 903 may be multiple elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on transmission media. These transmission media include transmission media such as wireless channels, wired channels, and optical cables. The processor 901 is responsible for managing the bus architecture and general processing, and the memory 902 can store data used by the processor 901 when performing operations.

The processor 901 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), the processor can also adopt a multi-core architecture.

In some possible implementation manners, an embodiment of the present application further provides a second device. As shown in FIG. 10, the second device 1000 may at least include a processor 1001, a memory 1002, and a transceiver 1003.

The memory 1002 is used to store computer programs;

The transceiver 1003 is configured to send and receive data under the control of the processor;

The processor 1001 is configured to read the computer program in the memory and perform the following operations:

Optionally, the processor 1001 is further configured to:

Optionally, the processor 1001 is specifically configured to:

Wherein, in FIG. 10, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1001 and various circuits of the memory represented by the memory 1002 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface provides the interface. The transceiver 1003 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium. These transmission media include transmission media such as wireless channels, wired channels, and optical cables. The processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1002 can store data used by the processor 1001 when performing operations.

The processor 1001 may be a CPU, ASIC, FPGA or CPLD, and the processor may also adopt a multi-core architecture.

In some possible implementation manners, various aspects of the positioning correction method provided in this application can also be implemented in the form of a program product, which includes program code. When the program product runs on a computer device, the program code is used to make the computer The device executes the steps in the positioning correction method according to various exemplary embodiments of the present application described above in this specification.

The embodiment of the present application provides a computer-readable storage medium, which includes program code. When the program product runs on a computer, the program code is used to make the computer execute any of the above-mentioned positioning correction methods or to target a target. The steps of the device positioning correction method.

The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or a combination of any of the above. More specific examples (non-exhaustive list) of readable storage media include: electrical connections with one or more wires, portable disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable Type programmable read only memory (EPROM or flash memory), optical fiber, portable compact disk read only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the above.

The program product for business control of the embodiment of the present application may adopt a portable compact disk read-only memory (CD-ROM) and include program code, and may be run on a computing device. However, the program product of this application is not limited to this. In this document, the readable storage medium can be any tangible medium that contains or stores a program, and the program can be used by or combined with a command execution system, device, or device.

The readable signal medium may include a data signal propagated in baseband or as a part of a carrier wave, and readable program code is carried therein. This propagated data signal can take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. The readable signal medium may also be any readable medium other than a readable storage medium, and the readable medium may send, propagate, or transmit a program for use by or in combination with the command execution system, apparatus, or device.

The program code contained on the readable medium can be transmitted by any suitable medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the foregoing.

The program code used to perform the operations of this application can be written in any combination of one or more programming languages. Programming languages include object-oriented programming languages—such as Java, C++, etc., as well as conventional procedural programming. Language-such as "C" language or similar programming language. The program code can be executed entirely on the user computing device, partly executed on the user equipment, executed as an independent software package, partly executed on the user computing device and partly executed on the remote computing device, or entirely on the remote computing device or server Executed on. In the case of a remote computing device, the remote computing device may be connected to a user computing device through any kind of network including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (for example, using an Internet service provider to Connect via the Internet).

Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, then this application is also intended to include these modifications and variations.

Claims

A positioning correction method, characterized in that it is applied to a first device, and includes:

The first device generates an error correction parameter ECP according to the reference information;

The first device sends the ECP to the second device, so that the second device locates the target device based on the first positioning measurement value of the target device corrected by the ECP.
The method according to claim 1, wherein the first device generating the ECP according to the reference information comprises:

The first device generates an ECP according to the difference between the estimated position and the actual position of the integrity monitoring IM reference device;

Wherein, the IM reference device and the target device are in the coverage area of the same base station.
The method according to claim 2, wherein before the first device generates the ECP, the method further comprises:

Receiving, by the first device, the estimated position of the IM reference device generated by the positioning management function entity LMF according to the second positioning measurement value;

Wherein, the second positioning measurement value is determined by the base station according to the received positioning reference signal of the IM reference device or the positioning reference signal sent to the IM reference device.
The method according to claim 3, wherein if the first device is the base station and the reference device is the IM reference device, the positioning reference signal is an uplink positioning reference signal; or,

If the first device is the IM reference device and the reference device is the IM reference device, the positioning reference signal is a downlink positioning reference signal.
The method of claim 3, wherein the ECP at least comprises:

The correction value of the second positioning measurement value;

The error range of the second positioning measurement value;

It is determined whether the estimated position of the IM reference device meets the preset integrity monitoring condition.
The method of claim 3, wherein the sending of the ECP to the second device by the first device comprises:

The first device sends the ECP to the second device through a specific network interface.
The method according to claim 6, wherein if the first device is a serving base station or a non-serving base station, and the second device is the LMF, then the specific network interface is a new air interface positioning protocol interface NRPPa Or the Long Term Evolution Positioning Protocol interface LPPa, where the non-serving base station is a base station used to assist the serving base station to provide positioning services; or,

If the first device is the non-serving base station and the second device is the serving base station, the non-serving base station sends the ECP to the serving base station through X2 or Xn; or,

If the first device is the IM reference device and the second device is the LMF or user equipment UE, then the specific network interface is NRPPa, LPPa, Long Term Evolution Positioning Protocol LPP or Radio Resource Control RRC A sort of.
The method according to claim 1, wherein the reference information is auxiliary data sent by a reference base station;

The target device is within the coverage area of the reference base station.
The method according to claim 8, wherein the first device and the second device are both the LMF.
A positioning correction method for a target device is characterized in that it is applied to a second device and includes:

The second device corrects the first positioning measurement value of the target device according to the error correction parameter ECP sent by the first device;

The second device generates the estimated position of the target device based on the corrected first positioning measurement value.
The method of claim 10, further comprising:

If the second device receives ECPs sent by multiple first devices, the second device generates a corresponding reference ECP based on each ECP;

The second device corrects the first positioning measurement value of the target device according to the reference ECP.
The method according to claim 11, wherein the second device generates a corresponding reference ECP based on each ECP, comprising:

If each ECP is the correction value of the second positioning measurement value or the error range of the second positioning measurement value, the second device uses the average value or weighted average value of each ECP as the reference ECP; or,

If each ECP is to determine whether the estimated position of the integrity monitoring IM reference device meets the preset integrity monitoring condition, the second device performs a logical AND operation or a logical OR operation on each ECP, and calculates The result serves as the reference ECP.
A positioning correction device, which is characterized in that it is applied to a first device, and includes:

The error generating unit is used to generate the error correction parameter ECP according to the reference information;

The sending unit is configured to send the ECP to a second device, so that the second device locates the target device based on the first positioning measurement value of the target device corrected by the ECP.
The apparatus according to claim 13, wherein the ECP is generated according to the reference information, and the error generating unit is configured to:

Generate ECP based on the difference between the estimated position and actual position of the IM reference device for integrity monitoring;

Wherein, the IM reference device and the target device are in the coverage area of the same base station.
The apparatus according to claim 14, wherein before generating the error correction parameter ECP, the error generating unit is further configured to:

Receiving the estimated position of the IM reference device generated by the positioning management function entity LMF according to the second positioning measurement value;

Wherein, the second positioning measurement value is determined by the base station according to the received positioning reference signal of the IM reference device or the positioning reference signal sent to the IM reference device.
The apparatus according to claim 15, wherein if the first device is the base station and the reference device is the IM reference device, the positioning reference signal is an uplink positioning reference signal; or,

If the first device is the IM reference device and the reference device is the IM reference device, the positioning reference signal is a downlink positioning reference signal.
The device according to claim 15, wherein the ECP at least comprises:

The correction value of the second positioning measurement value;

The error range of the second positioning measurement value;

It is determined whether the estimated position of the IM reference device meets the preset integrity monitoring condition.
The apparatus according to claim 15, wherein the ECP is sent to a second device, and the sending unit is configured to:

The ECP is sent to the second device through a specific network interface.
The apparatus according to claim 18, wherein if the first device is a serving base station or a non-serving base station, and the second device is the LMF, then the specific network interface is a new air interface positioning protocol interface NRPPa Or the Long Term Evolution Positioning Protocol interface LPPa, where the non-serving base station is a base station used to assist the serving base station to provide positioning services; or,

If the first device is the non-serving base station and the second device is the serving base station, the non-serving base station sends the ECP to the serving base station through X2 or Xn; or,

If the first device is the IM reference device and the second device is the LMF or user equipment UE, then the specific network interface is NRPPa, LPPa, Long Term Evolution Positioning Protocol LPP or Radio Resource Control RRC A sort of.
The apparatus according to claim 13, wherein the reference information is auxiliary data sent by a reference base station;

The target device is within the coverage area of the reference base station.
The apparatus according to claim 20, comprising: the first device and the second device are both the LMF.
A positioning correction device for a target device is characterized in that it is applied to a second device and includes:

The correction unit is configured to correct the first positioning measurement value of the target device according to the error correction parameter ECP sent by the first device;

The positioning unit is configured to generate an estimated position of the target device based on the corrected first positioning measurement value.
The device according to claim 22, wherein the correction unit is further configured to:

If ECPs sent by multiple first devices are received, based on each ECP, a corresponding reference ECP is generated;

According to the reference ECP, the first positioning measurement value of the target device is corrected.
The apparatus according to claim 23, wherein a corresponding reference ECP is generated based on each ECP, and the correction unit is configured to:

If each ECP is the correction value of the second positioning measurement value or the error range of the second positioning measurement value, then the average or weighted average of the various ECPs is used as the reference ECP; or,

If each ECP is for judging whether the estimated position of the integrity monitoring IM reference device meets the preset integrity monitoring condition, then perform a logical AND operation or a logical OR operation on each ECP, and use the calculation result as the reference ECP.
A first device, characterized by comprising a processor, a memory, and a transceiver;

Memory, used to store computer programs;

A transceiver, used to send and receive data under the control of the processor;

The processor is configured to read the computer program in the memory and perform the following operations:

According to the reference information, generate the error correction parameter ECP;

The ECP is sent to the second device, so that the second device locates the target device based on the first positioning measurement value of the target device corrected by the ECP.
The first device according to claim 25, wherein the processor is specifically configured to:

Generate ECP based on the difference between the estimated position and actual position of the IM reference device for integrity monitoring;

Wherein, the IM reference device and the target device are in the coverage area of the same base station.
The first device according to claim 26, wherein the processor is further configured to:

Before the first device generates the ECP, receiving the estimated position of the IM reference device generated by the positioning management function entity LMF according to the second positioning measurement value;

Wherein, the second positioning measurement value is determined by the base station according to the received positioning reference signal of the IM reference device or the positioning reference signal sent to the IM reference device.
The first device according to claim 27, wherein if the first device is the base station and the reference device is the IM reference device, the positioning reference signal is an uplink positioning reference signal; or,

If the first device is the IM reference device and the reference device is the IM reference device, the positioning reference signal is a downlink positioning reference signal.
The first device according to claim 27, wherein the ECP at least comprises:

The correction value of the second positioning measurement value;

The error range of the second positioning measurement value;

It is determined whether the estimated position of the IM reference device meets the preset integrity monitoring condition.
The first device according to claim 27, wherein the processor is specifically configured to:

The ECP is sent to the second device through a specific network interface.
The first device according to claim 30, wherein if the first device is a serving base station or a non-serving base station, and the second device is the LMF, then the specific network interface is a new air interface positioning protocol Interface NRPPa or Long Term Evolution Positioning Protocol interface LPPa, the non-serving base station is a base station used to assist the serving base station to provide positioning services; or,

If the first device is the non-serving base station and the second device is the serving base station, the non-serving base station sends the ECP to the serving base station through X2 or Xn; or,

If the first device is the IM reference device and the second device is the LMF or user equipment UE, then the specific network interface is NRPPa, LPPa, Long Term Evolution Positioning Protocol LPP or Radio Resource Control RRC A sort of.
The first device according to claim 25, wherein the reference information is auxiliary data sent by a reference base station;

The target device is within the coverage area of the reference base station.
The first device according to claim 32, wherein the first device and the second device are both the LMF.
A second device, characterized in that it comprises a processor, a memory, and a transceiver;

Memory, used to store computer programs;

A transceiver, used to send and receive data under the control of the processor;

The processor is configured to read the computer program in the memory and perform the following operations:

Correct the first positioning measurement value of the target device according to the error correction parameter ECP sent by the first device;

Based on the corrected first positioning measurement value, an estimated position of the target device is generated.
The second device according to claim 34, wherein the processor is further configured to:

If ECPs sent by multiple first devices are received, based on each ECP, a corresponding reference ECP is generated;

According to the reference ECP, the first positioning measurement value of the target device is corrected.
The second device according to claim 35, wherein the processor is specifically configured to:

If each ECP is the correction value of the second positioning measurement value or the error range of the second positioning measurement value, then the average or weighted average of the various ECPs is used as the reference ECP; or,

If each ECP is for judging whether the estimated position of the integrity monitoring IM reference device meets the preset integrity monitoring condition, then perform a logical AND operation or a logical OR operation on each ECP, and use the calculation result as the reference ECP.
A computer-readable storage medium, characterized in that it comprises program code, and when the program product runs on an electronic device, the program code is used to make the electronic device execute any one of claims 1-9 The steps of the method, or the electronic device executes the steps of the method in any one of claims 10-12.