CN116437442A

CN116437442A - Equipment positioning method, device, network element equipment and storage medium

Info

Publication number: CN116437442A
Application number: CN202310520049.9A
Authority: CN
Inventors: 刘磊
Original assignee: Nantong Ailing Technology Co ltd
Current assignee: Nantong Ailing Technology Co ltd
Priority date: 2023-05-10
Filing date: 2023-05-10
Publication date: 2023-07-14

Abstract

The application provides a device positioning method, a device, network element equipment and a storage medium, and relates to the technical field of communication. Before equipment positioning is carried out, each target base station corresponding to target equipment can be screened from all base stations according to the acquired configuration information of each base station in the network topology and the cell information of the target equipment to be positioned, so that in the process of executing an equipment positioning algorithm, operation is carried out based on signal measurement results reported by the target equipment and the determined signal measurement results reported by all target base stations, and positioning information of the target equipment is generated. By the base station selection method provided by the method, each target base station which is most matched with the target equipment can be screened out from the network topology, so that the accuracy of the positioning result of the target equipment can be improved when the target equipment is positioned according to the signal measurement result of each target base station.

Description

Equipment positioning method, device, network element equipment and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a device positioning method, an apparatus, a network element device, and a storage medium.

Background

With the continuous development of internet technology, the positioning of equipment has important significance in various fields of industry, agriculture, transportation, logistics, asset tracking and the like.

At present, in 5G positioning, a distance between a user equipment and each base station is calculated by acquiring a signal time difference reported by the base station and a signal time difference reported by the user equipment, and position information of the user equipment is calculated by combining geographic position information of each base station.

How to select a suitable base station for device positioning in the above method plays a key role in improving the accuracy of user equipment positioning, but no better solution exists at present for selecting a base station.

Disclosure of Invention

The present application aims to provide a device positioning method, a device, a network element device and a storage medium, so as to improve the accuracy of device positioning.

In order to achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

in a first aspect, an embodiment of the present application provides a device positioning method, corresponding to a location management network element in a 5G core network, the method including:

determining a plurality of target base stations corresponding to target equipment according to configuration information of each base station in the network topology where the position management network element is located and cell information where the target equipment to be positioned is located;

Acquiring a first signal measurement result reported by the target equipment and a second signal measurement result reported by each target base station corresponding to the target equipment, wherein the first signal measurement result comprises: the arrival time of the downlink positioning measurement signal received by the target equipment and the emission time of the response signal of the downlink positioning measurement signal transmitted by the target equipment to the target base station; the second signal measurement includes: the method comprises the steps that a target base station transmits the transmitting time of a downlink positioning measurement signal to target equipment and the arrival time of a response signal of the target equipment to the downlink positioning measurement signal;

and determining the geographic position information of the target equipment according to the first signal measurement result reported by the target equipment, the second signal measurement result reported by each target base station corresponding to the target equipment and the geographic position information of each target base station.

Optionally, the configuration information of each base station at least includes: cell information of the base station, longitude and latitude and altitude information of the base station, signal types supported by the base station and downlink positioning measurement signal configuration parameters provided by the base station.

Optionally, the determining, according to the configuration information of each base station in the network topology where the location management network element is located and the cell information where the target device to be located is located, a plurality of target base stations corresponding to the target device includes:

determining a base station which is the same as the cell information of the target equipment as a service base station corresponding to the target equipment according to the cell information of each base station and the cell information of the target equipment;

determining a preset number of base stations from the rest base stations according to longitude, latitude and height information of the rest base stations except the service base station in each base station, supported signal types, provided downlink positioning measurement signal configuration parameters and longitude, latitude and height information of the service base station;

and taking the preset number of base stations and the service base station as a plurality of target base stations corresponding to the target equipment.

Optionally, the determining, according to latitude and longitude information of remaining base stations except the serving base station in each base station, supported signal types, provided downlink positioning measurement signal configuration parameters, and latitude and longitude information of the serving base station, a preset number of base stations from the remaining base stations includes:

According to the signal types supported by the residual base stations, screening out first base stations which simultaneously support uplink positioning measurement signals and downlink positioning measurement signals from the residual base stations;

screening out second base stations meeting preset requirements from the first base stations according to the configuration parameters of the downlink positioning measurement signals provided by the first base stations;

according to the longitude and latitude and the altitude information of each second base station and the longitude and latitude and the altitude information of the service base station, determining the distance between each second base station and the service base station respectively;

and screening the preset number of base stations from the second base stations according to the distance between the second base stations and the service base station.

Optionally, the screening each second base station meeting the preset requirement from each first base station according to the configuration parameters of the downlink positioning measurement signals provided by each first base station includes:

according to the bandwidth of the downlink positioning measurement signals provided by the first base stations and the bandwidth occupied by the first base stations, screening out candidate base stations which can provide the downlink positioning measurement signals for the target equipment from the first base stations;

and screening each second base station from each candidate base station according to the downlink positioning measurement signal resource transmission power provided by each candidate base station and the resource transmission power required by the current positioning scene.

Optionally, the selecting, from the first base stations, each candidate base station capable of providing the downlink positioning measurement signal for the target device according to the bandwidth of the downlink positioning measurement signal provided by each first base station and the bandwidth currently occupied by each first base station includes:

determining the current residual bandwidth of a first base station according to the bandwidth of a downlink positioning measurement signal provided by the first base station and the bandwidth currently occupied by the first base station;

and if the current residual bandwidth is greater than or equal to the bandwidth required by the positioning of the target equipment, the first base station is used as one candidate base station.

Optionally, the obtaining the first signal measurement result reported by the target device and the second signal measurement result reported by each target base station corresponding to the target device includes:

transmitting, to the target device, request location information and assistance data required for performing downlink positioning measurements, the assistance data including: relevant configuration parameters of the downlink positioning measurement signals and expected values of time differences of the measurement signals;

acquiring a first signal measurement result reported by the target equipment after performing downlink positioning measurement on each target base station according to the auxiliary data;

And sending measurement request information to each target base station, receiving measurement response of each target base station, and obtaining a second signal measurement result reported by each target base station.

In a second aspect, an embodiment of the present application further provides a device positioning apparatus, which corresponds to a location management network element in a 5G core network, where the apparatus includes: a determining module and an acquiring module;

the determining module is configured to determine a plurality of target base stations corresponding to the target device according to configuration information of each base station in the network topology where the location management network element is located and cell information where the target device to be located is located;

the acquisition module is configured to acquire a first signal measurement result reported by the target device and a second signal measurement result reported by each target base station corresponding to the target device, where the first signal measurement result includes: the arrival time of the downlink positioning measurement signal received by the target equipment and the emission time of the response signal of the downlink positioning measurement signal transmitted by the target equipment to the target base station; the second signal measurement includes: the method comprises the steps that a target base station transmits the transmitting time of a downlink positioning measurement signal to target equipment and the arrival time of a response signal of the target equipment to the downlink positioning measurement signal;

The determining module is configured to determine geographic location information of the target device according to the first signal measurement result reported by the target device, the second signal measurement result reported by each target base station corresponding to the target device, and geographic location information of each target base station.

Optionally, the determining module is specifically configured to determine, according to the cell information where each base station is located and the cell information where the target device is located, that the base station that is the same as the cell information where the target device is located is a serving base station corresponding to the target device;

Optionally, the determining module is specifically configured to screen each first base station that supports both an uplink positioning measurement signal and a downlink positioning measurement signal from each remaining base station according to a signal type supported by each remaining base station;

Optionally, the determining module is specifically configured to screen, according to a bandwidth of the downlink positioning measurement signal provided by each first base station and a bandwidth currently occupied by each first base station, each candidate base station that can currently provide the downlink positioning measurement signal for the target device from each first base station;

Optionally, the determining module is specifically configured to determine, according to a downlink positioning measurement signal bandwidth provided by the first base station and a bandwidth currently occupied by the first base station, a current remaining bandwidth of the first base station;

Optionally, the acquiring module is specifically configured to send, to the target device, request location information and auxiliary data required for performing downlink positioning measurement, where the auxiliary data includes: relevant configuration parameters of the downlink positioning measurement signals and expected values of time differences of the measurement signals;

In a third aspect, an embodiment of the present application provides a network element device, including: the network element device comprises a processor, a storage medium and a bus, wherein the storage medium stores machine-readable instructions executable by the processor, and when the network element device runs, the processor and the storage medium are communicated through the bus, and the processor executes the machine-readable instructions to realize the device positioning method as provided in the first aspect.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs a device positioning method as provided in the first aspect.

The beneficial effects of this application are:

before equipment positioning, the method firstly screens out each target base station corresponding to target equipment from all base stations according to the acquired configuration information of each base station in the network topology and the cell information of the target equipment to be positioned, so that in the process of executing an equipment positioning algorithm, operation is performed based on signal measurement results reported by the target equipment and determined signal measurement results reported by each target base station, and positioning information of the target equipment is generated. By the base station selection method provided by the method, each target base station which is most matched with the target equipment can be screened out from the network topology, so that the accuracy of the positioning result of the target equipment can be improved when the target equipment is positioned according to the signal measurement result of each target base station.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a 5G network topology according to an embodiment of the present application;

fig. 2 is a schematic flow chart of a device positioning method according to an embodiment of the present application;

fig. 3 is a flow chart of another method for locating a device according to an embodiment of the present application;

fig. 4 is a flowchart of another device positioning method according to an embodiment of the present application;

fig. 5 is a flowchart of another method for locating a device according to an embodiment of the present application;

fig. 6 is a flowchart of another device positioning method according to an embodiment of the present application;

fig. 7 is a flowchart of another method for locating a device according to an embodiment of the present application;

fig. 8 is a schematic diagram of a device positioning apparatus according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a network element device according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it should be understood that the accompanying drawings in the present application are only for the purpose of illustration and description, and are not intended to limit the protection scope of the present application. In addition, it should be understood that the schematic drawings are not drawn to scale. A flowchart, as used in this application, illustrates operations implemented according to some embodiments of the present application. It should be understood that the operations of the flow diagrams may be implemented out of order and that steps without logical context may be performed in reverse order or concurrently. Moreover, one or more other operations may be added to the flow diagrams and one or more operations may be removed from the flow diagrams as directed by those skilled in the art.

In addition, the described embodiments are only some, but not all, of the embodiments of the present application. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that the term "comprising" will be used in the embodiments of the present application to indicate the presence of the features stated hereinafter, but not to exclude the addition of other features.

Fig. 1 is a schematic diagram of a 5G network topology according to an embodiment of the present application, where the network topology may include a User Equipment (UE), a plurality of base stations (gNB, next generation node b), and a core network, and the core network may include a location management network element (LMF, location management function) and an access and mobility management network element (AMF, access and mobility management function). Each base station further comprises a Transmission-Reception node (TRP), the positioning measurement data of the base station can be reported to an AMF network element in the core network through the TRP, and then the AMF network element sends the positioning measurement data to the LMF network element, so that the LMF network element can position the user equipment according to the positioning measurement data reported by the base station and the positioning measurement data reported by the user equipment in combination with the geographic position information of the base station, that is, the geographic position information of the user equipment is calculated.

In general, in the 5G positioning technology, the positioning of the ue needs to measure the relative position between the ue and the base station based on the known position of the base station, based on the base station position, and then determine the position of the ue in space based on the relative position.

But the network topology generally includes a plurality of base stations, and how to select a base station capable of accurately positioning the user equipment from the plurality of base stations is important for improving the positioning accuracy of the user equipment. Based on the above, the present solution provides a method for selecting a base station in a device positioning process, where configuration information of each base station is obtained through an LMF network element, so that step-by-step screening is performed according to the configuration information, and finally each base station matched with a user device is screened from all base stations in a network topology. Based on the selected base station, a positioning algorithm is executed, and the position information of the user equipment is calculated, so that the calculated position information of the user equipment is more accurate due to more accurate base station selection.

It should be noted that the network topology may include a plurality of ues, and the method may be used to select the base station when locating different ues, so as to screen the base station more matched with the ues.

Fig. 2 is a schematic flow chart of a device positioning method according to an embodiment of the present application; the implementation main body of the method is the LMF network element in fig. 1, as shown in fig. 2, and the method may include:

s101, determining a plurality of target base stations corresponding to target equipment according to configuration information of each base station in the network topology where the position management network element is located and cell information where the target equipment to be positioned is located.

Firstly, a plurality of target base stations corresponding to target equipment can be screened out from all base stations in the network topology according to configuration information of each base station in the network topology and cell information of the target equipment to be positioned. That is, the base station is selected according to the configuration information of the base station, so as to select each base station suitable for positioning the target device.

The cell information of the target device refers to a cell covered by the network of the target device.

S102, acquiring a first signal measurement result reported by target equipment and a second signal measurement result reported by each target base station corresponding to the target equipment.

Based on the determined target base stations, in this embodiment, the LMF network element may obtain a first signal measurement result reported by the target device and a second signal measurement result reported by each target base station corresponding to the target device, so as to execute a positioning algorithm according to the first signal measurement result and the second signal measurement result.

Wherein the first signal measurement may comprise: the arrival time of the downlink positioning measurement signal of the target base station received by the target equipment and the transmission time of the response signal of the downlink positioning measurement signal transmitted to the target base station by the target equipment; the second signal measurement may comprise: the target base station transmits the transmitting time of the downlink positioning measurement signal to the target device, and the arrival time of the response signal of the target device to the downlink positioning measurement signal is received by the target base station.

It should be noted that, the measurement signal sent by the target device to the base station is referred to as an uplink signal, and the measurement signal sent by the base station to the target device is referred to as a downlink signal. The first signal measurement result of the target device may include an arrival time of the target device receiving the downlink positioning measurement signal of the target base station, which is assumed to be t1; and a transmission time of the response signal of the downlink positioning measurement signal to the target base station by the target device is assumed to be t2. Since the target base station corresponding to the target device includes a plurality of target base stations, a t2 and a t1 are generated correspondingly between the target device and each target base station. That is, the first signal measurement of the target device may include a plurality of sets (t 1, t 2), one set (t 1, t 2) characterizing the signal measurement between the target device and one target base station.

Likewise, the second signal measurement result reported by the target base station may include: the transmitting time of the downlink positioning measurement signal sent by the target base station to the target device is assumed to be t0, and the arrival time of the response signal of the target base station to the downlink positioning measurement signal received by the target base station is assumed to be t3. A set of (t 0, t 3) is generated correspondingly between a target base station and a target device.

S103, determining the geographic position information of the target equipment according to the first signal measurement result reported by the target equipment, the second signal measurement result reported by each target base station corresponding to the target equipment and the geographic position information of each target base station.

Then, for a target base station, the LMF network element may calculate the distance between the target device and the target base station according to the signal measurement result (t 1, t 2) between the target device and the target base station reported by the target device and (t 0, t 3) reported by the target base station.

The distance between the target equipment and each target base station can be calculated respectively, the geographic position information of each target base station is fixed and can be directly obtained, and then the geographic position information of the target equipment to be positioned can be calculated by combining the geographic position information of each target base station, wherein the geographic position information can refer to a spatial position and can be represented by longitude, latitude and altitude information.

In summary, according to the device positioning method provided in this embodiment, before performing device positioning, first, according to the obtained configuration information of each base station in the network topology and the cell information of the target device to be positioned, each target base station corresponding to the target device may be screened from each base station, so that in the process of executing the device positioning algorithm, operation is performed based on the signal measurement result reported by the target device and the determined signal measurement result reported by each target base station, and positioning information of the target device is generated. By the base station selection method provided by the method, each target base station which is most matched with the target equipment can be screened out from the network topology, so that the accuracy of the positioning result of the target equipment can be improved when the target equipment is positioned according to the signal measurement result of each target base station.

The configuration information of the base station in this solution may at least include: the cell in which the base station is located, that is, the network coverage area of the base station; the longitude, latitude and altitude information of the base station can represent the space position information of the base station; the signal types supported by the base station may also be understood as TRP types of the base station, which may typically include: only supporting downlink positioning measurement signals, only supporting uplink positioning measurement signals, supporting both uplink and downlink positioning measurement signals, etc.; the configuration parameters of the downlink positioning measurement signals provided by the base station may include: bandwidth, resource transmission power, etc.

The LMF network element can send information request information to each base station in the network topology through the AMF network element, the base station can respond to the information, and the configuration information of the LMF network element is reported to the AMF network element through the TRP.

Of course, in practical application, the configuration information is not limited to the above parameters, and may also include: geometry of the base station, signal to noise ratio size, etc.

Fig. 3 is a flow chart of another method for locating a device according to an embodiment of the present application; optionally, in step S101, determining, according to configuration information of each base station in the network topology where the location management network element is located and cell information where the target device to be located is located, a plurality of target base stations corresponding to the target device may include:

s201, determining the base station which is the same as the cell information of the target equipment as the service base station corresponding to the target equipment according to the cell information of each base station and the cell information of the target equipment.

Firstly, a service base station corresponding to a base station of the same cell as the target equipment is screened out according to the cell information of each base station.

Alternatively, the LMF network element may request cell information of the target device from the AMF network element, for example: the LMF network element may request the AMF for cell information of the target device through providelocalnfo (providing Location information) in namf_location Service (Location Service) provided by the AMF network element.

S202, determining a preset number of base stations from the rest base stations according to longitude, latitude and height information of the rest base stations except the service base station in each base station, supported signal types, provided downlink positioning measurement signal configuration parameters and longitude, latitude and height information of the service base station.

After the service base station is determined, other base stations corresponding to the target device can be further screened out from the rest base stations except the service base station.

Optionally, based on longitude and latitude and altitude information of each remaining base station, supported signal types, and provided downlink positioning measurement signal configuration parameters, the longitude and latitude and altitude information of the serving base station and the number of base stations required for positioning are combined, and each base station meeting the number requirement and matching with the target device is screened from the remaining base stations.

S203, taking the preset number of base stations and the service base stations as a plurality of target base stations corresponding to the target equipment.

Then, the serving base station and each base station which meets the requirements and is screened from the remaining base stations may be collectively referred to as a plurality of base stations corresponding to the target device.

Fig. 4 is a flowchart of another device positioning method according to an embodiment of the present application; optionally, in step S202, determining a preset number of base stations from the remaining base stations according to longitude and latitude and altitude information of the remaining base stations except the serving base station in each base station, supported signal types, provided downlink positioning measurement signal configuration parameters, and longitude and latitude and altitude information of the serving base station may include:

S301, screening out first base stations which support uplink positioning measurement signals and downlink positioning measurement signals simultaneously from the remaining base stations according to signal types supported by the remaining base stations.

Optionally, each first base station that can support a multi-RTT (multi-round trip time) positioning method may be selected from the remaining base stations according to TRP types (supported signal types) provided by each remaining base station, and the base stations that can support uplink and downlink positioning measurement signals simultaneously in the remaining base stations may be selected as the first base station because the multi-RTT requires the base stations to support uplink and downlink positioning measurement signals simultaneously.

Of course, the different positioning methods are different for the TRP types of the base stations, only the multi-RTT positioning method is exemplified here, and when the positioning methods are different, the types of the required base stations TRP are also different, and then the first base station to be screened is also changed.

S302, screening out second base stations meeting preset requirements from the first base stations according to the configuration parameters of the downlink positioning measurement signals provided by the first base stations.

Further, the first base stations can be continuously screened according to the configuration parameters of the downlink positioning measurement signals provided by the first base stations, and the second base stations meeting the requirements are screened from the first base stations.

S303, determining the distance between each second base station and the service base station according to the longitude and latitude and altitude information of each second base station and the longitude and latitude and altitude information of the service base station.

The two rounds of screening can be regarded as screening from the dimension of the signal processing capability of the base station, and through the screening, each obtained second base station meets the requirement on the signal processing capability, that is, the positioning method can be normally executed, and the downlink positioning measurement signal meeting the requirement can be transmitted and the uplink positioning measurement signal can be normally measured.

In this embodiment, the distance between each second base station and the serving base station may be calculated by further screening from the distance dimension and combining the longitude and latitude and altitude information of each second base station with the longitude and latitude and altitude information of the serving base station, where the distance may also refer to a spatial distance.

S304, according to the distance between each second base station and the service base station, the preset number of base stations are screened out from each second base station.

In one implementation manner, assuming that the number of base stations required by the positioning algorithm is N, the preset number is N, and N base stations closest to the serving base station may be selected from the second base stations according to the distances between the second base stations and the serving base station.

Fig. 5 is a flowchart of another method for locating a device according to an embodiment of the present application; optionally, in step S302, the step of screening each second base station from each first base station to meet the preset requirement according to the configuration parameters of the downlink positioning measurement signals provided by each first base station may include:

s401, according to the bandwidths of the downlink positioning measurement signals provided by the first base stations and the bandwidths occupied by the first base stations, candidate base stations which can provide the downlink positioning measurement signals for the target equipment are screened from the first base stations.

Optionally, according to the bandwidth of the downlink positioning measurement signal provided by each first base station and the bandwidth currently occupied by each first base station, whether each first base station has the capability of providing the downlink positioning measurement signal for the target device is judged, and the first base station capable of providing the downlink positioning measurement signal for the target device is used as a candidate base station.

Wherein the bandwidth currently occupied by the first base station may be determined based on measurements of how many devices the first base station is currently being used by. For example: currently, 3 devices are using the first base station to make positioning measurements, and each device occupies a bandwidth of a, then the first base station can be considered to have been currently occupied with a bandwidth of 3a.

S402, screening each second base station from each candidate base station according to the transmission power of the downlink positioning measurement signal resource provided by each candidate base station and the transmission power of the resource required by the current positioning scene.

Based on the bandwidth determination result, each second base station whose resource transmission power meets the requirement can be further selected from the candidate base stations according to the downlink positioning measurement signal resource transmission power provided by each candidate base station and the resource transmission power required by the current positioning scene.

The resource transmission power requirements of different positioning scenes on the downlink positioning measurement signals are different, and the attenuation force of some scenes on the signals is strong, so that the required resource transmission power is relatively high. For example: in an indoor positioning scene, as more barriers exist between the equipment and the base station, the attenuation in the signal transmission process is stronger, and the required resource transmission power in the scene is relatively higher. In an open outdoor positioning scenario, attenuation in the signal transmission process is weak, and the required resource transmission power in such a scenario is relatively low.

Fig. 6 is a flowchart of another device positioning method according to an embodiment of the present application; optionally, in step S401, according to the bandwidth of the downlink positioning measurement signal provided by each first base station and the bandwidth currently occupied by each first base station, selecting each candidate base station from each first base station, which can currently provide the downlink positioning measurement signal for the target device, may include:

S501, determining the current residual bandwidth of the first base station according to the bandwidth of the downlink positioning measurement signal provided by the first base station and the bandwidth currently occupied by the first base station.

In some embodiments, the current remaining bandwidth of the first base station may be calculated based on the bandwidth occupied by each device currently using the first base station to make the positioning measurement and the bandwidth of the downlink positioning measurement signal provided by the first base station. The first base station may be any one of the first base stations.

S502, if the current residual bandwidth is greater than or equal to the bandwidth required by the positioning of the target equipment, the first base station is used as a candidate base station.

And when the residual bandwidth is greater than or equal to the bandwidth required by the target equipment for positioning, namely, when the residual bandwidth enables the first base station to provide the downlink positioning measurement signal for the target equipment, the first base station is used as a candidate base station.

And screening out the first base station when the residual bandwidth is insufficient to enable the first base station to provide the downlink positioning measurement signal for the target device.

And when judging that the transmission power of the downlink positioning measurement signal resource provided by the candidate base station is greater than or equal to the transmission power of the resource required by the current positioning scene, taking the candidate base station as a second base station.

Based on the above, each second base station is screened from each first base station layer by layer.

Therefore, the method for selecting the target base station based on the configuration information of the base station is fully described, and the base stations are screened from various dimensions such as signal processing capacity, distance and the like, so that various target base stations corresponding to target equipment are selected, and the various target base stations are used for positioning the target equipment, so that the accuracy of the obtained positioning result is higher.

It should be noted that, the above-mentioned base station selection method may be applied to different positioning methods, that is, when different positioning methods are adopted to position the target device in the following, each target base station corresponding to the target device to be positioned may be screened out first by adopting the base station screening method based on the configuration information of the base station provided by the present scheme, and then the target base station is applied to a specific positioning method to perform positioning calculation. For example: the method is applied to a multi-RTT (round trip time) positioning method or a UL-TDOA (uplink time difference of arrival) positioning method.

Fig. 7 is a flowchart of another method for locating a device according to an embodiment of the present application; optionally, in step S102, obtaining a first signal measurement result reported by the target device and a second signal measurement result reported by each target base station corresponding to the target device may include:

S601, sending, to a target device, request location information and auxiliary data required for performing downlink positioning measurement, where the auxiliary data includes: relevant configuration parameters of the downlink positioning measurement signals and expected values of time differences of the measurement signals.

The embodiment describes an acquisition process of the LMF network element for acquiring the measurement results reported by the target device and the target base station.

Before this, the LMF network element may obtain the positioning capability of the target device, i.e. the supported positioning method, through an LPP (lightweight representation protocol) Capability Transfer (transport capability) procedure. The LMF network element sends positioning request information (NRPPa POSITIONING INFORMATION REQUEST) to a serving base station corresponding to the target device to request to acquire the processing capability of the uplink positioning measurement signal of the target device, that is, acquire the SRS configuration of the target device.

The serving base station determines available SRS resources and configures SRS resources to the target device that enable the target device to have the required signal processing capability. Meanwhile, the service base station provides SRS configuration information of the target equipment for the LMF network element.

In some embodiments, if the above-mentioned semi-static SRS or aperiodic SRS is further indicated when the LMF network element sends positioning request information to the serving base station corresponding to the target device, the LMF network element sends a positioning activation request (NRPPa Positioning Activation Request) message to the serving base station to request activation of the target device to enable transmission of an uplink positioning measurement signal, and then the serving base station activates transmission of the uplink positioning measurement signal of the target device, so that the target device can perform transmission of the uplink positioning measurement signal according to the configured SRS resource. If the period SRS is indicated when the LMF network element sends the positioning request information to the serving base station corresponding to the target device, the serving base station does not need to activate the sending of the uplink positioning measurement signal of the target device, and at this time, the target device itself can send the uplink positioning measurement signal.

After the configuration of the signaling capability related resources and capabilities of the target device is completed. The LMF network element may send LPP Provide Assistance Data (provide assistance data) message to the target device, LPP Provide Assistance Data message may include: assistance data required for the target device to perform downlink positioning measurements may include: correlation configuration of TRS (Tracking Refernece Signal) and RSTD (RSTD Reference Signal Time Difference, measured signal time difference) expected values, etc.

In addition, the LMF network element transmits LPP Request Location Information (request location information) message to the target device to request acquisition of signal measurement results of the target device.

S602, acquiring a first signal measurement result reported by target equipment after downlink positioning measurement is executed on each target base station according to the auxiliary data.

The target device may perform downlink positioning signal measurement, i.e. DL PRS measurement, on each target base station according to the assistance data sent by the LMF network element.

The target device may report the measured first signal measurement result to the LMF network element through a LPP Provide Location Information (providing location information) message.

S603, sending measurement request information to each target base station, receiving measurement response of each target base station, and obtaining second signal measurement results reported by each target base station.

The LMF network element may also send NRPPa MEASUREMENT REQUEST (measurement request) messages to each target base station, and each target base station may report the second signal measurement result to the LMF network element via NRPPa Measurement Response (measurement response) messages. When the periodic SRS is indicated, each target base station may report a second signal measurement result to the LMF network element periodically through NRPPa Measurement Report (measurement report), and when the LMF network element needs to instruct each target base station to stop reporting the measurement result, NRPPa Measurement Abort (measurement interrupt) message may be sent to each target base station to terminate reporting of the measurement result by the target base station to the LMF network element.

And if the aperiodic SRS or the semi-static SRS is indicated, each target base station only reports the second signal measurement result to the LMF network element once.

Optionally, in step S103, determining the geographic location information of the target device according to the first signal measurement result reported by the target device, the second signal measurement result reported by each target base station corresponding to the target device, and the geographic location information of each target base station may include:

and respectively determining the distance between the target equipment and each target base station according to the first signal measurement result reported by the target equipment, the second signal measurement result reported by each target base station and the light speed.

Taking the distance calculation between any target base station and the target device as an example, assuming that the first signal measurement result reported by the target device is (t 1, t 2) and the second signal measurement result reported by the target base station is (t 0, t 3), the LMF-capable network element can calculate and obtain the distance between the target device and the target base station based on the time difference between (t 1-t 2) and (t 3-t 0) and the signal propagation speed, which is defaulting to the speed of light.

Then a distance can be calculated between the target device and each target base station.

And determining the geographic position information of the target equipment by adopting a hyperbolic algorithm according to the distance between the target equipment and each target base station and the geographic position information of each target base station.

Hyperbolas can be drawn based on the distance between the target equipment and each target base station and the geographic position information of each target base station, and the intersection point of the curves can be determined as the position of the target equipment, so that the geographic position information of the target equipment can be obtained by calculating the position information of the intersection point of the curves according to the geographic position information of each target base station.

The following describes a device, an apparatus, a storage medium, etc. for executing the device positioning method provided in the present application, and specific implementation processes and technical effects of the device positioning method are referred to above, which are not described in detail below.

Fig. 8 is a schematic diagram of an apparatus positioning device according to an embodiment of the present application, where functions implemented by the apparatus positioning device correspond to steps executed by the method described above. The device may be understood as the above LMF network element, which may be a server or a processor of the server, or may be understood as a component, which is independent from the server or the processor and is controlled by the server, to implement the functions of the present application, as shown in fig. 8, where the device may include: a determining module 710 and an acquiring module 720;

a determining module 710, configured to determine a plurality of target base stations corresponding to the target device according to configuration information of each base station in a network topology where the location management network element is located and cell information where the target device to be located is located;

the obtaining module 720 is configured to obtain a first signal measurement result reported by a target device and a second signal measurement result reported by each target base station corresponding to the target device, where the first signal measurement result includes: the arrival time of the downlink positioning measurement signal of the target base station received by the target equipment and the transmission time of the response signal of the downlink positioning measurement signal transmitted to the target base station by the target equipment; the second signal measurement includes: the target base station transmits the transmitting time of the downlink positioning measurement signal to the target equipment, and the target base station receives the arrival time of the response signal of the target equipment to the downlink positioning measurement signal;

The determining module 710 is configured to determine geographic location information of the target device according to the first signal measurement result reported by the target device, the second signal measurement result reported by each target base station corresponding to the target device, and geographic location information of each target base station.

Optionally, the determining module 710 is specifically configured to determine, according to the cell information where each base station is located and the cell information where the target device is located, that the base station that is the same as the cell information where the target device is located is a serving base station corresponding to the target device;

determining a preset number of base stations from the remaining base stations according to longitude, latitude and height information of the remaining base stations except the serving base station in each base station, supported signal types, provided downlink positioning measurement signal configuration parameters and longitude, latitude and height information of the serving base station;

and taking the preset number of base stations and the service base stations as a plurality of target base stations corresponding to the target equipment.

Optionally, the determining module 710 is specifically configured to screen each first base station supporting both an uplink positioning measurement signal and a downlink positioning measurement signal from each remaining base station according to a signal type supported by each remaining base station;

according to the longitude and latitude and the altitude information of each second base station and the longitude and latitude and the altitude information of the service base station, the distance between each second base station and the service base station is respectively determined;

and screening out the preset number of base stations from the second base stations according to the distance between the second base stations and the service base station.

Optionally, the determining module 710 is specifically configured to screen, from the first base stations, each candidate base station that can currently provide the downlink positioning measurement signal for the target device according to the bandwidth of the downlink positioning measurement signal provided by each first base station and the bandwidth currently occupied by each first base station;

Optionally, the determining module 710 is specifically configured to determine a current remaining bandwidth of the first base station according to a downlink positioning measurement signal bandwidth provided by the first base station and a current occupied bandwidth of the first base station;

And if the current residual bandwidth is greater than or equal to the bandwidth required by the positioning of the target equipment, the first base station is used as a candidate base station.

Optionally, the acquiring module 720 is specifically configured to send, to the target device, auxiliary data required for requesting location information and performing downlink positioning measurement, where the auxiliary data includes: relevant configuration parameters of the downlink positioning measurement signals and expected values of time differences of the measurement signals;

acquiring a first signal measurement result reported by target equipment after downlink positioning measurement is performed on each target base station according to auxiliary data;

The foregoing apparatus is used for executing the method provided in the foregoing embodiment, and its implementation principle and technical effects are similar, and are not described herein again.

The above modules may be one or more integrated circuits configured to implement the above methods, for example: one or more application specific integrated circuits (Application Specific Integrated Circuit, abbreviated as ASIC), or one or more microprocessors (digital singnal processor, abbreviated as DSP), or one or more field programmable gate arrays (Field Programmable Gate Array, abbreviated as FPGA), or the like. For another example, when a module above is implemented in the form of a processing element scheduler code, the processing element may be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU) or other processor that may invoke the program code. For another example, the modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

The modules may be connected or communicate with each other via wired or wireless connections. The wired connection may include a metal cable, optical cable, hybrid cable, or the like, or any combination thereof. The wireless connection may include a connection through a LAN, WAN, bluetooth, zigBee, or NFC, or any combination thereof. Two or more modules may be combined into a single module, and any one module may be divided into two or more units. It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described system and apparatus may refer to corresponding procedures in the method embodiments, which are not described in detail in this application.

Fig. 9 is a schematic structural diagram of a network element device provided in the embodiment of the present application, where the network element device may be a server or a computer device.

The network element device may include: a processor 801, and a storage medium 802.

The storage medium 802 is used to store a program, and the processor 801 calls the program stored in the storage medium 802 to execute the above-described method embodiment. The specific implementation manner and the technical effect are similar, and are not repeated here.

In which the storage medium 802 stores program code that, when executed by the processor 801, causes the processor 801 to perform various steps in the device positioning method according to various exemplary embodiments of the present application described in the "exemplary methods" section of the present specification.

The processor 801 may be a general purpose processor such as a Central Processing Unit (CPU), digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, and may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution.

The storage medium 802 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. The storage medium may include at least one type of storage medium, and may include, for example, flash Memory, a hard disk, a multimedia card, a card-type storage medium, a random access storage medium (Random Access Memory, RAM), a static random access storage medium (Static Random Access Memory, SRAM), a programmable Read-Only storage medium (Programmable Read Only Memory, PROM), a Read-Only storage medium (ROM), a charged erasable programmable Read-Only storage medium (Electrically Erasable Programmable Read-Only storage), a magnetic storage medium, a magnetic disk, an optical disk, and the like. A storage medium is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The storage medium 802 in the embodiments of the present application may also be a circuit or any other device capable of implementing a storage function, for storing program instructions and/or data.

Optionally, the present application also provides a program product, such as a computer readable storage medium, comprising a program for performing the above-described method embodiments when being executed by a processor.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.

The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (english: processor) to perform part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: u disk, mobile hard disk, read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.

Claims

1. A device positioning method, characterized by being responsive to a location management network element in a 5G core network, the method comprising:

2. The method of claim 1, wherein the configuration information of each base station comprises at least: cell information of the base station, longitude and latitude and altitude information of the base station, signal types supported by the base station and downlink positioning measurement signal configuration parameters provided by the base station.

3. The method according to claim 2, wherein the determining the plurality of target base stations corresponding to the target device according to the configuration information of each base station in the network topology where the location management network element is located and the cell information where the target device to be located is located includes:

4. The method of claim 3, wherein the determining a preset number of base stations from the remaining base stations according to latitude and longitude information of the remaining base stations except the serving base station, supported signal types, provided downlink positioning measurement signal configuration parameters, and latitude and longitude information of the serving base station in each base station comprises:

5. The method of claim 4, wherein the step of screening each second base station from each first base station for meeting the preset requirement according to the configuration parameters of the downlink positioning measurement signals provided by each first base station comprises:

6. The method of claim 5, wherein the step of screening candidate base stations from the first base stations that are currently capable of providing the downlink positioning measurement signal to the target device based on the bandwidth of the downlink positioning measurement signal provided by the first base stations and the bandwidth currently occupied by the first base stations comprises:

7. The method according to any one of claims 1-6, wherein the obtaining the first signal measurement result reported by the target device and the second signal measurement result reported by each target base station corresponding to the target device includes:

8. A device positioning apparatus, characterized by a location management network element in a 5G core network, the apparatus comprising: a determining module and an acquiring module;

9. A network element device, comprising: a processor, a storage medium, and a bus, the storage medium storing program instructions executable by the processor, the processor and the storage medium communicating over the bus when the electronic device is running, the processor executing the program instructions to implement the device positioning method of any one of claims 1 to 7.

10. A computer readable storage medium, characterized in that the storage medium has stored thereon a computer program which, when executed by a processor, is adapted to carry out the device positioning method according to any of claims 1 to 7.