CN116546618A - Terminal positioning management method, device, position management function network element and storage medium - Google Patents

Terminal positioning management method, device, position management function network element and storage medium Download PDF

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Publication number
CN116546618A
CN116546618A CN202310556092.0A CN202310556092A CN116546618A CN 116546618 A CN116546618 A CN 116546618A CN 202310556092 A CN202310556092 A CN 202310556092A CN 116546618 A CN116546618 A CN 116546618A
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China
Prior art keywords
positioning
terminal equipment
network element
base stations
terminal device
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CN202310556092.0A
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Chinese (zh)
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刘磊
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Nantong Ailing Technology Co ltd
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Nantong Ailing Technology Co ltd
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Priority to CN202310556092.0A priority Critical patent/CN116546618A/en
Publication of CN116546618A publication Critical patent/CN116546618A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/20—Transfer of user or subscriber data
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application provides a terminal positioning management method, a terminal positioning management device, a position management function network element and a storage medium, and relates to the technical field of communication. The method comprises the following steps: sending a state subscription request for terminal equipment to an access and mobility management function (AMF) network element; receiving terminal equipment state information sent by the AMF network element according to the state subscription request when the state of the terminal equipment changes; and in the periodic positioning measurement process of the terminal equipment and a plurality of base stations, determining whether to execute the periodic positioning measurement of the terminal equipment according to the state information of the terminal equipment sent by the AMF network element. The method and the device can determine whether the base station continues to locate the terminal device or not by monitoring the state of the terminal device.

Description

Terminal positioning management method, device, position management function network element and storage medium
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a terminal positioning management method, a device, a location management function network element, and a storage medium.
Background
How to measure the distance between a base station and a terminal device in mobile communication is an important technology for positioning the terminal device.
In the periodic positioning measurement process for the terminal equipment, the state of the terminal equipment must be ensured not to change, otherwise, the base station cannot measure the terminal equipment or cannot accurately measure the terminal equipment.
However, in the multi-base station positioning process, other base stations besides the serving base station in the area where the terminal device is located cannot detect whether the state of the terminal device is changed, and cannot determine whether to continue positioning the terminal device.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a terminal positioning management method, a device, a position management function network element and a storage medium, so as to determine whether a base station continuously positions terminal equipment or not by monitoring the state of the terminal equipment.
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 terminal positioning management method, applied to a location management function LMF network element, where the method includes:
sending a state subscription request for terminal equipment to an access and mobility management function (AMF) network element;
receiving terminal equipment state information sent by the AMF network element according to the state subscription request when the state of the terminal equipment changes;
and in the periodic positioning measurement process of the terminal equipment and a plurality of base stations, determining whether to execute the periodic positioning measurement of the terminal equipment according to the state information of the terminal equipment sent by the AMF network element.
Optionally, in the periodic positioning measurement process of the terminal device and the plurality of base stations, before determining whether to execute the periodic positioning measurement of the terminal device according to the state information of the terminal device sent by the AMF network element, the method further includes:
and sending periodic positioning measurement requests for the terminal equipment to the plurality of base stations so as to enable periodic positioning measurement to be carried out between the terminal equipment and the plurality of base stations through signal transmission.
Optionally, the determining whether to perform the periodic positioning measurement of the terminal device according to the status information of the terminal device sent by the AMF network element includes:
and sending a termination positioning notification to the plurality of base stations according to the terminal equipment state information sent when the state of the terminal equipment changes.
Optionally, the determining whether to perform the periodic positioning measurement of the terminal device according to the status information of the terminal device sent by the AMF network element includes:
and after receiving the state information of the terminal equipment, judging whether to send a positioning termination notification to the plurality of base stations according to the positioning states of the plurality of base stations.
Optionally, the determining whether to send a positioning termination notification to the plurality of base stations according to the positioning states of the plurality of base stations includes:
judging whether the positioning accuracy of a plurality of base stations which perform periodic positioning measurement with the terminal equipment meets a preset positioning condition or not;
and if the preset positioning condition is not met, respectively sending a positioning termination notification to the plurality of base stations.
Optionally, the determining whether the positioning accuracy of the plurality of base stations performing periodic positioning measurement with the terminal device meets a preset positioning condition includes:
if the terminal equipment state information indicates that the terminal equipment is switched from a connection state to an idle state, judging whether positioning accuracy of a plurality of base stations which perform periodic positioning measurement with the terminal equipment meets preset positioning conditions or not.
Optionally, the sending, to the plurality of base stations, a periodic positioning measurement request for the terminal device includes:
judging whether the terminal equipment meets a preset positioning measurement condition according to the state information of the terminal equipment;
and if the terminal equipment meets the preset positioning measurement condition, sending periodic positioning measurement requests aiming at the terminal equipment to the plurality of base stations.
In a second aspect, an embodiment of the present application further provides a terminal positioning management device, applied to a location management function LMF network element, where the device includes:
a subscription request sending module, configured to send a state subscription request for a terminal device to an AMF network element;
the information receiving module is used for receiving terminal equipment state information sent by the AMF network element according to the state subscription request when the state of the terminal equipment changes;
and the execution determining module is used for determining whether to execute the periodic positioning measurement of the terminal equipment or not according to the state information of the terminal equipment sent by the AMF network element in the periodic positioning measurement process of the terminal equipment and a plurality of base stations.
Optionally, before the execution of the determining module, the apparatus further includes:
and the positioning request sending module is used for sending periodic positioning measurement requests aiming at the terminal equipment to the plurality of base stations so as to enable periodic positioning measurement to be carried out between the terminal equipment and the plurality of base stations through signal transmission.
Optionally, the execution determining module is specifically configured to send a termination positioning notification to the plurality of base stations according to terminal device status information sent when the status of the terminal device changes.
Optionally, the execution determining module is specifically configured to determine, after receiving the terminal device status information, whether to send a positioning termination notification to the plurality of base stations according to the positioning status of the plurality of base stations.
Optionally, the execution determining module includes:
the positioning judgment unit is used for judging whether the positioning accuracy of the plurality of base stations which perform periodic positioning measurement with the terminal equipment meets the preset positioning condition or not;
and the notification sending unit is used for respectively sending the termination positioning notification to the plurality of base stations if the preset positioning condition is not met.
Optionally, the positioning determining unit is specifically configured to determine whether positioning accuracy of the plurality of base stations performing periodic positioning measurement with the terminal device meets a preset positioning condition if the terminal device state information indicates that the terminal device is switched from a connection state to an idle state.
Optionally, the positioning request sending module includes:
the positioning measurement judging unit is used for judging whether the terminal equipment meets the preset positioning measurement condition according to the state information of the terminal equipment;
and the positioning request sending unit is used for sending periodic positioning measurement requests aiming at the terminal equipment to the plurality of base stations if the terminal equipment meets the preset positioning measurement conditions.
In a third aspect, an embodiment of the present application further provides a location management function network element, including:
a transceiver, a processor, and a storage medium;
the transceiver is used for receiving and transmitting data;
the storage medium stores program instructions executable by the processor;
the processor is configured to invoke the program instructions stored in the storage medium and execute the steps of the terminal positioning management method according to any of the first aspects.
In a fourth aspect, embodiments of the present application further provide a computer readable storage medium, where a computer program is stored, the computer program when executed by a processor performs the steps of the terminal positioning management method according to any one of the first aspects.
The beneficial effects of this application are:
the utility model provides a terminal positioning management method, device, position management function network element and storage medium, the state of terminal equipment is subscribed to AMF network element by LMF network element to when terminal equipment's state changes, LMF network element can decide whether let the base station continue to carry out periodic positioning measurement process, avoid the base station to carry out invalid location to terminal equipment in terminal equipment's state changes, practice thrift the network resource.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, 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 invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an interactive flow diagram for positioning based on round trip time;
FIG. 2 is an interactive flow diagram for positioning based on multi-point round trip time;
fig. 3 is a flowchart of a terminal positioning management method according to an embodiment of the present application;
fig. 4 is a state subscription interaction diagram provided in an embodiment of the present application;
FIG. 5 is a schematic diagram of subscription notification interaction provided in an embodiment of the present application;
fig. 6 is a second flowchart of a terminal positioning management method provided in the embodiment of the present application;
fig. 7 is a flowchart of a terminal positioning management method according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a terminal positioning management device according to an embodiment of the present application;
fig. 9 is a schematic diagram of a location management function network element provided in 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 invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention.
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 one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Furthermore, the terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that, without conflict, features in embodiments of the present application may be combined with each other.
Before explaining the terminal positioning management method provided by the embodiment of the present application, a positioning procedure related to the present application is first described.
Referring to fig. 1, in order to refer to an interactive flowchart for positioning based on Round Trip Time, as shown in fig. 1, a base station sends a Round Trip Time (RTT) measurement request to a terminal device, the request carries a downlink positioning reference signal (Down Load Positioning Reference Signal, DL PRS), the base station records a sending Time t0 for sending the RTT measurement request by using a local clock, and after receiving the RTT measurement request sent by the base station, the terminal device records an arrival Time t1 of the downlink positioning reference signal by using the local clock; and then, the terminal equipment sends an uplink sounding reference signal (UP Load Sounding Reference Signal, UL SRS) to the base station, a local clock is adopted to record the sending time t2 of the sent uplink sounding reference signal, after the base station receives the uplink sounding reference signal sent by the terminal equipment, the local clock is adopted to record the arrival time t3 of the uplink sounding reference signal, the base station reports a time difference (t 3-t 0) to a position management function (Location Management Function, LMF) network element, the terminal equipment reports the time difference (t 2-t 1) to the LMF network element, the LMF network element determines the distance between the terminal equipment and the base station according to the time difference between (t 3-t 0) and (t 2-t 1), and the position of the terminal equipment is calculated by combining the geographic coordinates of the base station.
In order to improve the accuracy of positioning the terminal device, the terminal device may be positioned with a multi-round trip time (multi-RTT).
Referring to fig. 2, which is an interactive flowchart for positioning based on multi-point round trip time, as shown in fig. 2, the process may include:
step 0: LMF network element and Serving base station (Serving gNB) and adjacent base station (neighbor gNB) carry out NR positioning protocol copy downlink positioning reference signal configuration information interaction (NRPPa DL PRS Configuration Information Exchange), and position information required by Multi-RTT positioning method is obtained, wherein the position information can comprise: the cell corresponding to the base station and the geographic position of the base station. Besides the positioning by the base station, other Transmission-Reception Point (TRP) devices with positioning function may be used for positioning.
Step 1: the LMF network element obtains the positioning capability of the terminal equipment through a positioning protocol capability transmission (LPP Capability Transfer) process, wherein the positioning capability of the terminal equipment can be a positioning method supported by the terminal equipment.
Step 2: the LMF network element transmits a positioning information acquisition request message (NRPPa Positioning Information Request) to a serving base station of the terminal device UE to request SRS configuration information of the terminal device.
Step 3: the serving base station determines the SRS resources available to the terminal device (gNB determi nes UL SRS Resources) and configures the SRS resources for the terminal device according to step 3a (UE SRS Configuration).
Step 4: the service base station replies a positioning information acquisition response (NRPPa Positioning Information Response) message to the LMF network element, and provides SRS configuration information of the terminal equipment for the LMF network element.
Step 5: if the semi-static SRS or the aperiodic SRS is indicated in the step 2, the LMF network element requests to activate SRS transmission of the terminal device by sending a positioning activation request message to the serving base station (NRPPa Positioning Activation Request), then the serving base station activates SRS transmission of the terminal device (Activate UE SRS transmission), replies a positioning activation response message to the LMF network element (NRPPa Positioning Activation Response), and the terminal device starts to transmit SRS according to SRS configuration, and if the periodic SRS is indicated in the step 2, the step is skipped.
Step 6: the LMF network element sends a location measurement request message (NRPPa Measurement Request) to the selected plurality of base stations, including the serving base station and the neighbor base stations, the message containing the SRS configuration information in step 4.
Step 7: the LMF network element sends to the terminal device auxiliary data (LPP Provide Assistance Data) required for measuring the downlink positioning reference signal, the auxiliary data comprising: the relative configuration of the positioning reference signals and the expected value of the reference signal time difference (Reference Signal Time Difference, RSTD), etc.
Step 8: the LMF network element sends a positioning information acquisition request (LPP Request Location Information) to the terminal device requesting acquisition of Multi-RTT measurements.
Step 9a: the terminal device performs downlink positioning reference signal measurement (DL PRS Measurements) on all the specified base stations according to the assistance data in step 7.
Step 9b: each base station in step 6 performs an uplink sounding reference signal (UL SRS Measurements) to the terminal device.
Step 10: the terminal device reports the DL PRS based Multi-RTT measurement result to the LMF network element through a positioning information providing message (LPP Provide Location Information).
Step 11: each base station reports the Multi-RTT measurement result based on UL SRS to the LMF network element through a fixed measurement response message (NRPPa Measurement Response), and if the periodic SRS is indicated in step 2, each base station subsequently reports the UL SRS measurement result of the terminal device to the LMF network element through a measurement report (NRPPa Measurement Report). When the LMF network element needs to instruct the base station to stop measurement reporting, the LMF network element sends a measurement termination message (NRPPa Measurement Abort) to the base station, carrying the identification of the periodic positioning measurement.
Step 12: if the LMF network element sends a location activation request message to the base station in step 5 (NRPPa Positioning Activation Request), the LMF network element sends a location cancel message to the serving base station (NRPPa Positioning Deactivation).
Step 13: and the LMF network element calculates the position of the terminal equipment according to the measurement results reported by the terminal equipment and each base station in the steps 10 and 11.
In the positioning process of the multi-point round trip time, if the LMF network element indicates the serving base station and the neighboring base stations to perform periodic positioning measurement on the terminal device, in the periodic positioning measurement process, if the state of the terminal device changes, the serving base station and/or the neighboring base stations may not continuously position the terminal device or may not accurately position the terminal device, but other neighboring base stations except the serving base station may not detect the state change of the terminal device, so that when the state of the terminal device changes, each base station still continuously performs periodic positioning measurement, thereby not only accurately positioning the terminal device, but also wasting network resources.
Based on this, the embodiment of the application is to provide a terminal positioning management method, in which an LMF network element subscribes the state of a terminal device to an AMF network element, so that when the state of the terminal device changes, the LMF network element can determine whether to allow a base station to continue to execute a periodic positioning measurement process, thereby avoiding invalid positioning of the terminal device by the base station when the state of the terminal device changes, and saving network resources.
The following describes a specific implementation manner of the terminal location management method applied to the LMF network element with reference to an embodiment.
Referring to fig. 3, a first flowchart of a terminal positioning management method according to an embodiment of the present application is shown in fig. 3, where the method may include:
s10: and sending a state subscription request for the terminal equipment to the AMF network element.
In this embodiment, after receiving the positioning request for the terminal device, the LMF network element needs to send a status subscription request to the AMF network element to subscribe status information of the terminal device to the AMF network element in order to ensure that the status of the terminal device can be monitored in the entire positioning process.
It should be noted that, the LMF network element and the AMF network element belong to a network element in the same core network, and before the whole state subscription procedure, the terminal device needs to register in the core network first, so that the AMF network element manages the terminal device.
For example, please refer to fig. 4, which is a State subscription interaction diagram provided in the embodiment of the present application, as shown in fig. 4, an LMF network element is used as a service consumption network element (NF Service Consumer), and subscribes State information of a terminal device to an AMF network element through an event open service (namf_eventExposure) provided by the AMF network element, and the subscribed event type may be Connectivity status Report (Connectivity-State-Report) of the terminal device, and provides an event notification identifier for the AMF network element. Wherein the event notification identification may be a uniform resource locator (Uniform Resource Locator, URL) of the LMF network element.
If the subscription is successful, the AMF network element sends a subscription success response to the LMF network element, and if the subscription is failed, the AMF network element sends a subscription failure response to the LMF network element.
S20: and receiving terminal equipment state information sent by the AMF network element according to the state subscription request when the state of the terminal equipment changes.
In this embodiment, the AMF network element monitors the state of the terminal device according to the state subscription request of the LMF network element, and when the state of the terminal device changes, sends the state information of the terminal device to the LMF network element according to the event notification identifier in the state subscription request. The terminal equipment state information includes: the communication connection state between the terminal equipment and the core network can indicate whether the terminal equipment and the core network are in a connection state or not, and also can indicate the signal connection strength between the terminal equipment and the core network.
For example, please refer to fig. 5, which is a schematic subscription notification interaction diagram provided in the embodiment of the present application, as shown in fig. 5, an AMF network element sends terminal device status information to an LMF network element according to an event notification identifier provided by the LMF network element in a subscription process. If the LMF network element successfully receives the state information of the terminal equipment, no response (No Content) is required to be sent to the AMF network element, otherwise, a failure response is sent to the AMF network element.
S30: in the periodic positioning measurement process of the terminal equipment and the plurality of base stations, determining whether to execute the periodic positioning measurement of the terminal equipment according to the state information of the terminal equipment sent by the AMF network element.
In this embodiment, in the periodic positioning measurement process of the terminal device and the plurality of base stations, the plurality of base stations are periodically triggered to respectively send downlink positioning reference signals to the terminal device and record the sending time t0, the terminal device records the arrival time t1 of receiving the downlink positioning reference signals, the terminal device sends uplink sounding reference signals to the plurality of base stations and records the sending time t2, the plurality of base stations respectively record the arrival time t3 of receiving the uplink sounding reference signals, the plurality of base stations respectively report time differences (t 3-t 0) to the LMF network element, the terminal device reports the time differences (t 2-t 1) to the LMF network element, and the LMF network element calculates the position of the terminal device according to the time differences (t 3-t 0) and the time differences (t 2-t 1) and by combining the geographic coordinates of the plurality of base stations.
In the long-term periodic positioning measurement process, a plurality of base stations periodically send downlink positioning reference signals to terminal equipment, and positioning of the terminal equipment is completed based on signal interaction between the plurality of base stations and the terminal equipment.
However, in the long-term periodic positioning measurement process, if the LMF network element receives the terminal device status information sent by the AMF network element and determines that the status of the terminal device changes, the LMF network element needs to determine whether to continue to perform the periodic positioning measurement of the terminal device.
In a possible implementation manner, in the step S30, before determining whether to perform the periodic positioning measurement of the terminal device according to the terminal device status information sent by the AMF network element in the periodic positioning measurement process of the terminal device and the plurality of base stations, the method may further include:
and sending periodic positioning measurement requests for the terminal equipment to the plurality of base stations so that the periodic positioning measurement is carried out between the terminal equipment and the plurality of base stations through signal transmission.
In this embodiment, if the LMF network element receives the periodic positioning measurement requirement for the terminal device, besides subscribing the state information of the terminal device to the AMF network element, the periodic positioning measurement request is sent to the plurality of base stations by adopting the multi-point round trip time positioning procedure as shown in fig. 2, so that the periodic positioning measurement is performed between the terminal device and the plurality of base stations through signal interaction transmission.
In some embodiments, please refer to fig. 6, which is a second flowchart of a terminal positioning management method provided in the embodiments of the present application, as shown in fig. 6, the sending, to a plurality of base stations, a periodic positioning measurement request for a terminal device may include:
s41: and judging whether the terminal equipment meets the preset positioning measurement condition according to the state information of the terminal equipment.
S42: and if the terminal equipment meets the preset positioning measurement condition, sending periodic positioning measurement requests aiming at the terminal equipment to a plurality of base stations.
In this embodiment, when receiving a positioning request for a terminal device, an LMF network element sends a status subscription request to an AMF network element, the AMF network element may immediately return current status information of the terminal device to the LMF network element, and the LMF network element may determine, according to the current status information, whether the terminal device meets a positioning measurement condition, where the positioning measurement condition may be that the terminal device is in a connected state, and if the terminal device meets the positioning measurement condition, the LMF network element may send periodic positioning measurement requests for the terminal device to a plurality of base stations, so that periodic positioning measurement is performed between the terminal device and the plurality of base stations through signal transmission.
According to the terminal positioning management method provided by the embodiment, the LMF network element subscribes the state of the terminal equipment from the AMF network element, so that when the state of the terminal equipment changes, the LMF network element can determine whether to enable the plurality of base stations to continuously execute the periodic positioning measurement process, invalid positioning of the terminal equipment caused by the change of the state of the terminal equipment by the plurality of base stations is avoided, and network resources are saved.
The following describes possible implementations of the LMF network element determining whether to perform periodic positioning measurements according to terminal device status information in connection with embodiments.
In a possible implementation manner, the determining, in S30, whether to perform periodic positioning measurement of the terminal device according to the status information of the terminal device sent by the AMF network element may include:
and sending a termination positioning notification to a plurality of base stations according to the terminal equipment state information sent when the state of the terminal equipment changes.
In this embodiment, if the LMF network element receives the status information of the terminal device of the AMF network element, it is determined that the status of the terminal device changes, and it is not suitable to continue positioning the terminal device, in this case, the LMF network element sends a termination positioning notification to the serving base station and the neighboring base station of the terminal device, and after the serving base station and the neighboring base station receive the termination positioning notification, the serving base station and the neighboring base station stop sending the downlink positioning reference signal to the terminal device continuously, so as to end periodic positioning measurement between the terminal device and the base station.
In some embodiments, the sending a termination positioning notification to the plurality of base stations according to the terminal device status information sent when the status of the terminal device changes may specifically include:
and if the terminal equipment state information indicates that the terminal equipment is switched from the connection state to the idle state, sending a positioning termination notification to a plurality of base stations.
In this embodiment, the connection state refers to a state that the terminal device is connected between the service base station and the core network, if the terminal device is switched from the connection state to the idle state between the service base station and the core network, only the network elements in the service base station and the core network determine that the terminal device is switched to the idle state, and the neighboring base station cannot determine that the terminal device is switched to the idle state, in this case, the neighboring base station continues to locate the terminal device, which may result in the failure to locate or the failure to locate accurately, in this case, since the LMF network element subscribes the state of the terminal device to the AMF network element, the LMF network element sends a termination location notification to the service base station and the neighboring base station after determining that the terminal device is in the idle state, so as to terminate the periodic location of the terminal device by the service base station and the neighboring base station.
According to the terminal positioning management method provided by the embodiment, when the state of the terminal equipment changes, the LMF network element can decide to enable the plurality of base stations to terminate the periodic positioning measurement process, so that the plurality of base stations are prevented from carrying out invalid positioning on the terminal equipment when the state of the terminal equipment changes, and network resources are saved.
In another possible implementation manner, the determining, in S30, whether to perform periodic positioning measurement of the terminal device according to the status information of the terminal device sent by the AMF network element may include:
after receiving the state information of the terminal equipment, judging whether to send a positioning termination notification to the plurality of base stations according to the positioning states of the plurality of base stations.
In this embodiment, after receiving the terminal device state information sent by the AMF network element, the LMF network element determines that the state of the terminal device changes, and at this time, the LMF network element needs to determine whether the serving base station and the neighboring base station can also locate the terminal device, and determines whether to stop locating the terminal device by detecting the locating states of the serving base station and the neighboring base station. The positioning states of the serving base station and the neighboring base station may be: if the service base station and the adjacent side base station have the capability of still positioning the terminal equipment when the state of the terminal equipment is changed, the service base station and the adjacent side base station are not informed of the termination positioning when the service base station and the adjacent side base station have the capability of still positioning the terminal equipment when the state of the terminal equipment is changed; otherwise, the LMF network element sends a termination positioning notification to the service base station and the adjacent base station.
In some embodiments, the positioning states of the plurality of base stations may be: positioning accuracy of a plurality of base stations. Referring to fig. 7, in a third flowchart of the terminal positioning management method provided in the embodiment of the present application, as shown in fig. 7, after receiving the terminal device status information, determining whether to send a positioning termination notification to a plurality of base stations according to the positioning status of the plurality of base stations may include:
s31: and judging whether the positioning accuracy of the plurality of base stations which perform periodic positioning measurement with the terminal equipment meets the preset positioning condition or not.
In this embodiment, after determining that the state of the terminal device changes, the LMF network element needs to determine whether the serving base station and/or the neighboring base station can also accurately locate the terminal device, and specifically, whether the positioning accuracy for locating the terminal device meets the preset positioning condition.
It should be noted that, in some cases, although the state of the terminal device is changed, because the base station is preconfigured with the capability of correcting the received signal, in this case, the base station may still accurately locate the terminal device, and the LMF network element may not instruct the base station to stop locating the terminal device.
In other cases, although the state of the terminal equipment is changed, because the accuracy requirement for positioning the terminal equipment is low, only the approximate area of the terminal equipment needs to be determined, in this case, the positioning of the base station to the terminal equipment can still meet the positioning requirement, and the LMF network element may not instruct the base station to stop positioning the terminal equipment.
In some embodiments, the positioning accuracy of the base station may be calculated according to the time difference (t 3-t 0) reported by the base station and the expected value of the reference signal time difference, the positioning accuracy of each base station may be calculated according to the time difference reported by each base station, or the positioning accuracy of each progress may be calculated according to the time difference (t 2-t 1) reported by the terminal device and performing signal interaction with each base station.
By way of example, taking the case of calculating the positioning accuracy of each base station according to the time difference reported by each base station, the way of calculating the positioning accuracy may be:
the LMF network element takes any base station as a standard base station, takes the time difference (t 3-t 0) reported by the standard base station and the time difference (t 2-t 1) reported by the terminal equipment aiming at the signal of the standard base station as standard time differences, calculates the position of the terminal equipment as a standard position according to the geographic coordinates of the standard base station and the standard time differences, calculates the position of the terminal equipment according to the geographic coordinates of other base stations and the corresponding time differences, and determines the positioning precision according to the distance difference between the position obtained by positioning of other base stations and the standard position.
In some embodiments, the step S31 of determining whether positioning accuracy of the plurality of base stations performing periodic positioning measurement with the terminal device meets a preset positioning condition may include:
if the terminal equipment state information indicates that the terminal equipment is switched from a connection state to an idle state, judging whether positioning accuracy of a plurality of base stations which perform periodic positioning measurement with the terminal equipment meets preset positioning conditions or not.
In this embodiment, if the base station has the capability of positioning the terminal device when the terminal device is in the idle state, the LMF network element does not directly send a positioning termination notification to the base station when determining that the terminal device is in the idle state, but first determines whether the positioning accuracy of each base station meets a preset positioning condition.
S32: and if the preset positioning condition is not met, respectively sending a positioning termination notification to a plurality of base stations.
In this embodiment, if it is determined that the positioning accuracy of the serving base station or any neighboring base station does not meet the preset positioning condition, accurate positioning of the terminal device cannot be performed according to the time differences reported by the multiple base stations, and in this case, the LMF network element may send a positioning termination notification to the multiple base stations.
In some embodiments, it may be determined whether the positioning accuracy of the preset number of base stations meets the preset positioning condition, if the positioning accuracy of the preset number of base stations meets the preset positioning condition, it is determined that each base station may still perform accurate positioning on the terminal device, without sending a positioning termination notification to the plurality of base stations, or may send a positioning terminal notification to a base station whose positioning accuracy does not meet the preset positioning condition, and the other base stations continue to perform periodic positioning measurement on the terminal device.
According to the terminal positioning management method provided by the embodiment, when the state of the terminal equipment is changed, the LMF network element can determine whether to enable the plurality of base stations to continuously execute the periodic positioning measurement process according to the positioning precision of the base stations, when the positioning precision meets the preset positioning condition, the base stations continuously position the terminal equipment, and when the positioning precision does not meet the preset positioning condition, the base stations stop positioning the terminal equipment, so that the condition that the plurality of base stations are in invalid positioning on the terminal equipment due to the state change of the terminal equipment is avoided, and network resources are saved.
On the basis of the method embodiment, the embodiment of the application also provides a terminal positioning management device which is applied to the LMF network element. Referring to fig. 8, a schematic structural diagram of a terminal positioning management device provided in an embodiment of the present application, as shown in fig. 8, the device may include:
a subscription request sending module 10, configured to send a status subscription request for a terminal device to an AMF network element;
an information receiving module 20, configured to receive terminal device status information sent by an AMF network element when a status of a terminal device changes according to a status subscription request;
the execution determining module 30 is configured to determine whether to execute periodic positioning measurement of the terminal device according to status information of the terminal device sent by the AMF network element during the periodic positioning measurement of the terminal device and the plurality of base stations.
Optionally, before executing the determining module 30, the apparatus may further include:
and the positioning request sending module is used for sending periodic positioning measurement requests for the terminal equipment to the plurality of base stations so as to enable periodic positioning measurement to be carried out between the terminal equipment and the plurality of base stations through signal transmission.
Optionally, the execution determining module 30 is specifically configured to send a termination positioning notification to the plurality of base stations according to the terminal device status information sent when the status of the terminal device changes.
Optionally, the execution determining module 30 is specifically configured to determine whether to send a positioning termination notification to the plurality of base stations according to the positioning states of the plurality of base stations after receiving the terminal device state information.
Optionally, the execution determining module 30 includes:
the positioning judgment unit is used for judging whether the positioning accuracy of the plurality of base stations which perform periodic positioning measurement with the terminal equipment meets the preset positioning condition or not;
and the notification sending unit is used for sending the termination positioning notification to the plurality of base stations respectively if the preset positioning condition is not met.
Optionally, the positioning determining unit is specifically configured to determine whether positioning accuracy of the plurality of base stations performing periodic positioning measurement with the terminal device meets a preset positioning condition if the terminal device state information indicates that the terminal device is switched from the connected state to the idle state.
Optionally, the positioning request sending module includes:
the positioning measurement judging unit is used for judging whether the terminal equipment meets the preset positioning measurement condition according to the state information of the terminal equipment;
and the positioning request sending unit is used for sending periodic positioning measurement requests aiming at the terminal equipment to a plurality of base stations if the terminal equipment meets the preset positioning measurement conditions.
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 ASICs), or one or more microprocessors, or one or more field programmable gate arrays (Field Programmable Gate Array, abbreviated as FPGAs), etc. 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).
Referring to fig. 9, a schematic diagram of a location management function network element provided in an embodiment of the present application, as shown in fig. 9, the location management function network element 100 includes: a transceiver 110, a processor 120, and a storage medium 130; the transceiver 110 is used for receiving and transmitting data; the storage medium 130 stores program instructions executable by the processor 120; the processor 120 is operative to invoke program instructions stored in the storage medium 130 to perform the method embodiments described above. The specific implementation manner and the technical effect are similar, and are not repeated here.
In an embodiment, the present application further provides a computer readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the method embodiment is performed.
In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. 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 the embodiments of the present invention 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 some of the steps of the methods according to the embodiments of the invention. 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.
The foregoing is merely illustrative of embodiments of the present invention, and the present invention is not limited thereto, and any changes or substitutions can be easily made by those skilled in the art within the technical scope of the present invention, and the present invention is intended to be covered by the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims (10)

1. A terminal location management method, applied to a location management function LMF network element, the method comprising:
sending a state subscription request for terminal equipment to an access and mobility management function (AMF) network element;
receiving terminal equipment state information sent by the AMF network element according to the state subscription request when the state of the terminal equipment changes;
and in the periodic positioning measurement process of the terminal equipment and a plurality of base stations, determining whether to execute the periodic positioning measurement of the terminal equipment according to the state information of the terminal equipment sent by the AMF network element.
2. The method of claim 1, wherein the determining whether to perform the periodic location measurement of the terminal device is preceded by the determining, based on the AMF network element sending the terminal device status information, during the periodic location measurement of the terminal device and a plurality of base stations, the method further comprising:
and sending periodic positioning measurement requests for the terminal equipment to the plurality of base stations so as to enable periodic positioning measurement to be carried out between the terminal equipment and the plurality of base stations through signal transmission.
3. The method of claim 1, wherein the determining whether to perform the periodic location measurement of the terminal device based on the AMF network element transmitting the terminal device state information comprises:
and sending a termination positioning notification to the plurality of base stations according to the terminal equipment state information sent when the state of the terminal equipment changes.
4. The method of claim 1, wherein the determining whether to perform the periodic location measurement of the terminal device based on the AMF network element transmitting the terminal device state information comprises:
and after receiving the state information of the terminal equipment, judging whether to send a positioning termination notification to the plurality of base stations according to the positioning states of the plurality of base stations.
5. The method of claim 4, wherein the determining whether to send a termination positioning notification to the plurality of base stations based on the positioning status of the plurality of base stations comprises:
judging whether the positioning accuracy of a plurality of base stations which perform periodic positioning measurement with the terminal equipment meets a preset positioning condition or not;
and if the preset positioning condition is not met, respectively sending a positioning termination notification to the plurality of base stations.
6. The method of claim 5, wherein the determining whether positioning accuracy of the plurality of base stations performing periodic positioning measurements with the terminal device meets a preset positioning condition comprises:
if the terminal equipment state information indicates that the terminal equipment is switched from a connection state to an idle state, judging whether positioning accuracy of a plurality of base stations which perform periodic positioning measurement with the terminal equipment meets preset positioning conditions or not.
7. The method of claim 2, wherein the sending periodic location measurement requests for the terminal device to the plurality of base stations comprises:
judging whether the terminal equipment meets a preset positioning measurement condition according to the state information of the terminal equipment;
and if the terminal equipment meets the preset positioning measurement condition, sending periodic positioning measurement requests aiming at the terminal equipment to the plurality of base stations.
8. A terminal location management device, applied to a location management function LMF network element, the device comprising:
a subscription request sending module, configured to send a state subscription request for a terminal device to an AMF network element;
the information receiving module is used for receiving terminal equipment state information sent by the AMF network element according to the state subscription request when the state of the terminal equipment changes;
and the execution determining module is used for determining whether to execute the periodic positioning measurement of the terminal equipment or not according to the state information of the terminal equipment sent by the AMF network element in the periodic positioning measurement process of the terminal equipment and a plurality of base stations.
9. A location management function network element, comprising:
a transceiver, a processor, and a storage medium;
the transceiver is used for receiving and transmitting data;
the storage medium stores program instructions executable by the processor;
the processor is configured to invoke the program instructions stored in the storage medium and perform the steps of the terminal positioning management method according to any of claims 1-7.
10. A computer-readable storage medium, characterized in that the storage medium has stored thereon a computer program which, when executed by a processor, performs the steps of the terminal positioning management method according to any one of claims 1 to 7.
CN202310556092.0A 2023-05-17 2023-05-17 Terminal positioning management method, device, position management function network element and storage medium Pending CN116546618A (en)

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CN202310556092.0A CN116546618A (en) 2023-05-17 2023-05-17 Terminal positioning management method, device, position management function network element and storage medium

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