CN117082614A - Terminal positioning method, device, computer equipment and storage medium - Google Patents

Terminal positioning method, device, computer equipment and storage medium Download PDF

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Publication number
CN117082614A
CN117082614A CN202310891224.5A CN202310891224A CN117082614A CN 117082614 A CN117082614 A CN 117082614A CN 202310891224 A CN202310891224 A CN 202310891224A CN 117082614 A CN117082614 A CN 117082614A
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China
Prior art keywords
terminal
signal
position information
positioning
initial position
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Chinese (zh)
Inventor
张凡
魏青
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China Telecom Technology Innovation Center
China Telecom Corp Ltd
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China Telecom Technology Innovation Center
China Telecom Corp Ltd
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Priority to CN202310891224.5A priority Critical patent/CN117082614A/en
Publication of CN117082614A publication Critical patent/CN117082614A/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
    • H04W64/003—Locating users or terminals or network equipment for network management purposes, e.g. mobility management locating network equipment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

The application relates to a terminal positioning method, a terminal positioning device, computer equipment and a storage medium, wherein the terminal positioning method comprises the following steps: acquiring signal strength information of a mobile communication downlink signal under the condition that a terminal to be positioned is detected to have a preset mobile communication downlink signal; when the signal strength information accords with a preset condition, correcting the initial position information of the terminal to be positioned to obtain corrected position information; the initial position information is obtained by carrying out Bluetooth positioning on the terminal to be positioned; and determining the corrected position information as a positioning result of the terminal to be positioned. According to the method, the mobile communication downlink signal is introduced, and when the signal intensity information accords with the preset condition, the Bluetooth positioning result is corrected, so that the accuracy of the positioning result of the terminal to be positioned can be improved.

Description

Terminal positioning method, device, computer equipment and storage medium
Technical Field
The present application relates to the field of indoor positioning technology, and in particular, to a terminal positioning method, a terminal positioning device, a computer device, a storage medium, and a computer program product.
Background
The positioning technology is widely applied to various intelligent business scenes, such as metauniverse, intelligent driving and the like. The satellite navigation system can solve most of positioning problems in an outdoor scene, and in an indoor scene, accurate positioning is difficult due to influence of a building on satellite signals. Therefore, special research is required for the positioning technology of indoor scenes.
Currently, for positioning technologies of indoor scenes, various positioning systems based on radio frequency signals are more common, such as: mobile base station positioning, bluetooth positioning, WIFI positioning, ultra wideband positioning, etc. The bluetooth positioning scheme generally uses several modes of bluetooth beacon (beacon), angle of Arrival (AOA) and time difference of Arrival (Time Difference Of Arrival, TDOA), and bluetooth positioning has advantages of high accuracy and low power consumption, but bluetooth signals are easily interfered, and signal stability is poor, so that positioning accuracy can be affected.
Therefore, the existing bluetooth positioning scheme has the problems that bluetooth signals are easy to be interfered and the stability of the signals is poor.
Disclosure of Invention
Based on this, there is a need to provide a terminal positioning method, apparatus, computer device, computer readable storage medium and computer program product for the above-mentioned bluetooth positioning scheme, which have the technical problems that bluetooth signals are easily interfered and signal stability is poor.
In a first aspect, the present application provides a terminal positioning method. The method comprises the following steps:
acquiring signal strength information of a mobile communication downlink signal under the condition that a terminal to be positioned is detected to have a preset mobile communication downlink signal;
when the signal strength information accords with a preset condition, correcting the initial position information of the terminal to be positioned to obtain corrected position information; the initial position information is obtained by carrying out Bluetooth positioning on the terminal to be positioned;
and determining the corrected position information as a positioning result of the terminal to be positioned.
In one embodiment, when the signal strength information meets a preset condition, the correcting process is performed on the initial position information of the terminal to be positioned to obtain corrected position information, including:
when the signal strength information accords with a preset condition, acquiring the position information of a base station corresponding to the mobile communication downlink signal;
and replacing the initial position information with the position information of the base station to obtain the corrected position information.
In one embodiment, the signal strength information includes a signal-to-noise ratio and a reference signal received power; the method further comprises the steps of:
Acquiring the signal-to-noise ratio and the priority of the reference signal received power;
recursively inquiring the signal-to-noise ratio and the reference signal received power in a predetermined decision tree model according to the order of the priority from high to low to obtain a matching result between the signal strength information and the preset condition; the decision tree model is determined based on a first threshold corresponding to the signal-to-noise ratio and a second threshold corresponding to the reference signal received power.
In one embodiment, the signal strength information includes a signal-to-noise ratio and a reference signal received power; the method further comprises the steps of:
acquiring a first threshold corresponding to the signal-to-noise ratio and a second threshold corresponding to the reference signal received power;
and when the signal-to-noise ratio is greater than the first threshold and the reference signal received power is greater than the second threshold, determining that the signal strength information of the mobile communication downlink signal meets the preset condition.
In one embodiment, the second threshold corresponding to the reference signal received power is determined by:
acquiring a calculation model for representing the relation between the distance and the signal intensity; the distance represents the distance between the terminal to be positioned and the base station corresponding to the mobile communication downlink signal;
Determining a preset distance range, and obtaining a signal intensity range according to the preset distance range and the calculation model;
the second threshold is determined based on the signal strength range and a conversion relationship between signal strength and reference signal received power.
In one embodiment, the method further comprises:
if the mobile communication downlink signal does not exist in the terminal to be positioned or the signal strength information does not accord with the preset condition, determining the initial position information as a positioning result of the terminal to be positioned.
In one embodiment, the initial position information is determined by:
transmitting the modulated signal to a base station; the base station is used for receiving the modulation signals through an antenna array, identifying the angle of the terminal to be positioned relative to the base station according to the modulation signals, and determining initial position information of the terminal to be positioned according to the angle;
and receiving the initial position information returned by the base station.
In a second aspect, the application further provides a terminal positioning device. The device comprises:
the acquisition module is used for acquiring signal strength information of a mobile communication downlink signal under the condition that a terminal to be positioned is detected to have a preset mobile communication downlink signal;
The correction module is used for correcting the initial position information of the terminal to be positioned when the signal intensity information accords with a preset condition to obtain corrected position information; the initial position information is obtained by carrying out Bluetooth positioning on the terminal to be positioned;
and the positioning module is used for determining the corrected position information as a positioning result of the terminal to be positioned.
In a third aspect, the present application also provides a computer device. The computer device comprises a memory storing a computer program and a processor which when executing the computer program performs the steps of:
acquiring signal strength information of a mobile communication downlink signal under the condition that a terminal to be positioned is detected to have a preset mobile communication downlink signal;
when the signal strength information accords with a preset condition, correcting the initial position information of the terminal to be positioned to obtain corrected position information; the initial position information is obtained by carrying out Bluetooth positioning on the terminal to be positioned;
and determining the corrected position information as a positioning result of the terminal to be positioned.
In a fourth aspect, the present application also provides a computer-readable storage medium. The computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
acquiring signal strength information of a mobile communication downlink signal under the condition that a terminal to be positioned is detected to have a preset mobile communication downlink signal;
when the signal strength information accords with a preset condition, correcting the initial position information of the terminal to be positioned to obtain corrected position information; the initial position information is obtained by carrying out Bluetooth positioning on the terminal to be positioned;
and determining the corrected position information as a positioning result of the terminal to be positioned.
In a fifth aspect, the present application also provides a computer program product. The computer program product comprises a computer program which, when executed by a processor, implements the steps of:
acquiring signal strength information of a mobile communication downlink signal under the condition that a terminal to be positioned is detected to have a preset mobile communication downlink signal;
when the signal strength information accords with a preset condition, correcting the initial position information of the terminal to be positioned to obtain corrected position information; the initial position information is obtained by carrying out Bluetooth positioning on the terminal to be positioned;
And determining the corrected position information as a positioning result of the terminal to be positioned.
According to the terminal positioning method, the device, the computer equipment, the storage medium and the computer program product, when the existence of the preset mobile communication downlink signal of the terminal to be positioned is detected, the signal intensity information of the mobile communication downlink signal is acquired, the signal intensity information is matched with the preset conditions, and when the signal intensity information and the preset conditions are matched, the initial position information of the terminal to be positioned, which is obtained through Bluetooth positioning, is corrected, so that corrected position information is obtained; and determining the corrected position information as a positioning result of the terminal to be positioned. According to the method, a mobile communication downlink signal is introduced as a basis, when the signal strength information accords with a preset condition, the Bluetooth positioning result is corrected, so that the accuracy of the positioning result of the terminal to be positioned can be improved; and the 5G communication protocol is not involved, only the 5G signal measurement data of the current terminal is required to be read, and a terminal chip is not required to be specially modified; meanwhile, the 5G network and the Bluetooth network do not need to interact, so that the network and the terminal do not need to be modified, and the network and the terminal can be rapidly deployed.
Drawings
FIG. 1 is a flow chart of a method for locating a terminal in one embodiment;
FIG. 2 is a schematic diagram of a decision tree model in one embodiment;
fig. 3 is a schematic diagram of bluetooth positioning of a terminal to be positioned in one embodiment;
FIG. 4 is a flowchart of a terminal positioning method according to another embodiment;
FIG. 5 is a block diagram of a terminal positioning device in one embodiment;
fig. 6 is an internal structural diagram of a computer device in one embodiment.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above 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 application described herein may be implemented in sequences other than those illustrated or otherwise described herein.
In one embodiment, as shown in fig. 1, a terminal positioning method is provided, where the method is applied to a terminal to illustrate the terminal, it is understood that the method may also be applied to a server, and may also be applied to a system including the terminal and the server, and implemented through interaction between the terminal and the server. The terminal can be, but not limited to, various personal computers, notebook computers, smart phones, tablet computers, internet of things equipment and portable wearable equipment, and the internet of things equipment can be smart speakers, smart televisions, smart air conditioners, smart vehicle-mounted equipment and the like. The portable wearable device may be a smart watch, smart bracelet, headset, or the like. The server may be implemented as a stand-alone server or as a server cluster composed of a plurality of servers. In this embodiment, the method includes the steps of:
step S110, under the condition that the terminal to be positioned is detected to have a preset mobile communication downlink signal, acquiring signal strength information of the mobile communication downlink signal.
The preset mobile communication downlink signal may be a 5G downlink signal.
The signal strength information may include, among other things, a signal-to-noise ratio and a reference signal received power. Where the signal-to-noise ratio represents the signal-to-interference-plus-noise ratio (Signal to Interference plus Noise Ratio, SINR), which refers to the ratio of the strength of the received useful signal to the strength of the received interfering signal (noise and interference); wherein the reference signal received power (Reference Signal Receiving Power, RSRP) is the average of the signal powers received on all REs (resource elements) carrying reference signals within a certain symbol.
In a specific implementation, when indoor positioning starts, a terminal to be positioned can perform position initialization, namely, initial position information is acquired through Bluetooth positioning, then the terminal to be positioned can detect whether a 5G downlink signal exists in the terminal to be positioned at regular time, if the 5G downlink signal exists, signal intensity information of the 5G downlink signal is acquired, and whether the terminal to be positioned is below a base station of the 5G downlink signal is determined according to the signal intensity information.
Step S120, when the signal intensity information accords with the preset condition, correcting the initial position information of the terminal to be positioned to obtain corrected position information; the initial position information is obtained by Bluetooth positioning of the terminal to be positioned.
The preset condition may be a condition that a signal strength characterization parameter included in the signal strength information is greater than a threshold value.
In a specific implementation, the application corrects the initial position information obtained by Bluetooth positioning of the terminal to be positioned, and particularly corrects the initial position information by utilizing the position information of the base station corresponding to the 5G downlink signal of the terminal to be positioned. More specifically, the initial position information is replaced by the position information of the base station, that is, the position of the terminal to be positioned is represented by the accurate position information of the base station, so that the position of the terminal to be positioned cannot be far away from the base station, otherwise, the position of the terminal to be positioned cannot be represented by the position information of the base station. Therefore, the terminal to be positioned can be set to be located in a preset area right below the base station, for example, when the terminal to be positioned is set to be located in a circular area formed by taking a point corresponding to the right below the base station as a circle center and taking a preset distance as a radius, the initial position information of the terminal to be positioned can be replaced by the position information of the base station.
Further, in order to identify whether the terminal to be positioned is in a preset area or not and consider the relation between the signal strength and the distance, the application judges whether the terminal to be identified is in the preset area or not according to the signal strength information of the 5G downlink signal received by the terminal to be positioned, and further determines whether the initial position information of the terminal to be positioned can be corrected or not according to the judging result. Specifically, when the signal strength information meets a preset condition, that is, the terminal to be identified is in a preset area, the initial position information of the terminal to be located can be corrected by using the position information of the base station corresponding to the 5G downlink signal of the terminal to be located, so as to obtain corrected position information. Otherwise, when the signal strength information does not meet the preset condition, that is, the terminal to be identified is not in the preset area, the initial position information of the terminal to be positioned cannot be corrected by utilizing the position information of the base station corresponding to the 5G downlink signal existing in the terminal to be positioned.
And step S130, the corrected position information is determined as a positioning result of the terminal to be positioned.
Specifically, after the corrected position information of the terminal to be positioned is obtained, the corrected position information is determined as the final positioning result of the terminal to be positioned because the position accuracy of the corrected position information is higher than the initial position information obtained by bluetooth positioning.
In the terminal positioning method, under the condition that the existence of a preset mobile communication downlink signal of the terminal to be positioned is detected, signal intensity information of the mobile communication downlink signal is acquired, and when the signal intensity information is matched with a preset condition, initial position information of the terminal to be positioned, which is obtained through Bluetooth positioning, is corrected, so that corrected position information is obtained; and determining the corrected position information as a positioning result of the terminal to be positioned. According to the method, a mobile communication downlink signal is introduced as a basis, when the signal strength information accords with a preset condition, the Bluetooth positioning result is corrected, so that the accuracy of the positioning result of the terminal to be positioned can be improved; and the 5G communication protocol is not involved, only the 5G signal measurement data of the current terminal is required to be read, and a terminal chip is not required to be specially modified; meanwhile, the 5G network and the Bluetooth network do not need to interact, so that the network and the terminal do not need to be modified, and the network and the terminal can be rapidly deployed.
In an exemplary embodiment, in the step S120, when the signal strength information meets the preset condition, the correction process is performed on the initial position information of the terminal to be located, so as to obtain corrected position information, including: when the signal strength information accords with a preset condition, acquiring the position information of a base station of a mobile communication downlink signal; and replacing the initial position information with the position information of the base station to obtain the corrected position information.
In a specific implementation, when the signal strength information meets a preset condition, it indicates that the position of the terminal to be positioned is in a preset area right below the base station, and the initial position information of the terminal to be positioned can be corrected by using the position information of the base station. Therefore, the position information of the base station of the mobile communication downlink signal can be acquired, the initial position information is replaced by the position information of the base station, the corrected position information is obtained, namely, the position information of the base station is used as the corrected position information, and the positioning result of the terminal to be positioned is represented.
In this embodiment, when the signal strength information meets a preset condition, that is, the terminal to be identified is indicated to be in a preset area, the initial position information of the terminal to be located is corrected by using the position information of the base station corresponding to the 5G downlink signal existing in the terminal to be located, so that the corrected position information can be ensured to accurately represent the position of the terminal to be located, and the problem that the error between the corrected position information and the actual position of the terminal to be located is larger is avoided. Meanwhile, the initial position information is replaced by the position information of the base station, and the initial position information is used as corrected position information of the terminal to be positioned, so that the problems that Bluetooth signals are easy to be interfered and poor in signal stability in a Bluetooth positioning scheme can be avoided.
In an exemplary embodiment, the signal strength information includes a signal-to-noise ratio and a reference signal received power; the method for identifying whether the signal strength information of the mobile communication downlink signal meets the preset condition comprises the following steps: acquiring signal-to-noise ratio and priority of reference signal received power; recursively inquiring the signal-to-noise ratio and the reference signal received power in a predetermined decision tree model according to the order of the priority from high to low to obtain a matching result between the signal strength information and a preset condition; the decision tree model is determined based on a first threshold corresponding to the signal-to-noise ratio and a second threshold corresponding to the reference signal received power.
The signal-to-noise ratio (SINR) and the Reference Signal Received Power (RSRP) are parameters for characterizing the strength of the 5G downlink signal, and it should be noted that, in addition to the snr and the reference signal received power, other parameters for characterizing the strength of the signal may be adopted by those skilled in the art in practical applications.
Wherein the signal to noise ratio is higher in priority than the reference signal received power.
In a specific implementation, the signal strength is proportional to the signal-to-noise ratio, the greater the signal strength is, the greater the signal-to-noise ratio is, and the first threshold corresponding to the signal-to-noise ratio can be obtained through experiments, and in the application, the first threshold is greater than 25, preferably greater than 28. The signal strength is in direct proportion to the reference signal receiving power, the larger the signal strength is, the larger the reference signal receiving power is, the second threshold corresponding to the reference signal receiving power can be obtained through experiments, and can be obtained based on a calculation model representing the relation between the distance and the signal strength, and in the application, the reference signal receiving power is larger than 30.
After determining the first threshold corresponding to the signal-to-noise ratio and the second threshold corresponding to the reference signal received power, a decision tree model may be constructed based on the first threshold and the second threshold, and referring to fig. 2, a schematic diagram of the decision tree model is shown for an embodiment, as shown in fig. 2, since the signal-to-noise ratio is higher than the reference signal received power, when performing recursive query, the signal-to-noise ratio in the signal strength information is preferentially queried, and when the signal-to-noise ratio is less than or equal to the first threshold, it is determined that the signal strength information does not meet a preset condition. When the signal-to-noise ratio is greater than a first threshold, further judging the received power of the reference signal, and if the received power of the reference signal is greater than a second threshold, determining that the signal strength information accords with a preset condition; otherwise, if the reference signal received power is smaller than or equal to the second threshold value, determining that the signal strength information does not meet the preset condition.
In this embodiment, the signal-to-noise ratio and the reference signal received power are used as signal strength characterization parameters of the downlink signal of the mobile communication to identify whether the signal strength information meets the preset condition, so that whether the initial position information of the terminal to be positioned can be accurately determined according to the identification result, the accuracy of the identification result is ensured, and meanwhile, the decision rate can be improved by determining the signal-to-noise ratio and the reference signal received power through the decision tree model.
In an exemplary embodiment, the signal strength information includes a signal-to-noise ratio and a reference signal received power; the method for identifying whether the signal strength information of the mobile communication downlink signal meets the preset condition comprises the following steps: acquiring a first threshold corresponding to a signal-to-noise ratio and a second threshold corresponding to reference signal received power; when the signal-to-noise ratio is larger than a first threshold and the reference signal received power is larger than a second threshold, determining that the signal strength information of the mobile communication downlink signal meets a preset condition.
The first threshold is used for identifying whether the signal-to-noise ratio of the 5G downlink signal existing in the terminal to be positioned meets the requirement or not, and the second threshold is used for identifying whether the reference signal receiving power of the 5G downlink signal existing in the terminal to be positioned meets the requirement or not.
In a specific implementation, the first threshold and the second threshold can be determined through experiments, wherein the second threshold can also be obtained through a calculation model based on the relation between the characterization distance and the signal intensity. And when the signal-to-noise ratio is larger than the first threshold and the reference signal receiving power is larger than the second threshold, the signal strength information of the 5G downlink signal can be determined to meet the preset condition, so that the initial position information of the terminal to be positioned can be corrected according to the position information of the base station. Otherwise, if the signal-to-noise ratio is smaller than or equal to the first threshold value and/or the reference signal received power is smaller than or equal to the second threshold value, the signal strength information of the 5G downlink signal can be determined to be not in a preset area right below the base station, and the initial position information of the terminal to be positioned cannot be corrected according to the position information of the base station.
In this embodiment, the signal-to-noise ratio and the reference signal received power are used as signal strength characterization parameters of the downlink signal of the mobile communication to identify whether the signal strength information meets a preset condition, so that whether the initial position information of the terminal to be positioned can be accurately determined according to the identification result, the accuracy of the identification result is ensured, and meanwhile, the determination rate can be improved by performing condition determination on the signal-to-noise ratio and the reference signal received power.
In an exemplary embodiment, the second threshold corresponding to the reference signal received power is determined by: acquiring a calculation model for representing the relation between the distance and the signal intensity; the distance represents the distance between the terminal to be positioned and the base station corresponding to the mobile communication downlink signal; determining a preset distance range, and obtaining a signal intensity range according to the preset distance range and a calculation model; a second threshold is determined based on the signal strength range and a conversion relationship between the signal strength and the reference signal received power.
Wherein, the calculation model for representing the relation between the distance and the signal intensity can be expressed as:
wherein d is distance and the unit is m; RSSI is the received signal strength (Received Signal StrengthIndication), which is negative; a is the signal intensity when the signal transmitting end and the signal receiving end are separated by 1 m; n is an environmental attenuation factor, and the optimal range is 3.25-4.5.
Specifically, because the initial position information is replaced by the position information of the base station, the distance between the terminal to be positioned and the base station cannot be too far, otherwise, a positioning error exists, and therefore the terminal to be positioned needs to be located in a preset area right below the base station, namely, the distance between the terminal to be positioned and the base station has a preset distance range, and the boundary value of the distance range is input into the calculation model, so that the signal intensity range of the terminal to be positioned in the preset area right below the base station can be obtained. The second threshold may further be determined based on a range of signal strengths and a conversion relationship between the signal strengths and the reference signal received power.
The conversion relationship between the signal strength and the reference signal received power can be expressed as:
RSRQ＝N*RSRP/RSSI
wherein N is the measurement bandwidth of the RSSI, RSRQ, which is generally called Reference Signal ReceivingQuality, and indicates the reference signal receiving quality, and has a preset range of values.
After obtaining the signal strength range of the RSSI according to the preset distance range and the calculation model, substituting the boundary value corresponding to the range into a conversion relation between the signal strength and the reference signal received power to obtain a second threshold.
In this embodiment, a second threshold corresponding to the reference signal receiving power is determined by using a calculation model that characterizes a relationship between a distance and a signal strength, so as to identify whether the reference signal receiving power of a 5G downlink signal existing in a terminal to be positioned meets a requirement according to the second threshold, thereby determining whether the initial position information of the terminal to be positioned can be corrected.
In an exemplary embodiment, the terminal positioning method further includes: if the fact that the mobile communication downlink signal does not exist in the terminal to be positioned is detected, or the signal strength information does not accord with the preset condition, the initial position information is determined to be a positioning result of the terminal to be positioned.
In the specific implementation, if it is detected that the signal received by the terminal to be positioned does not have a downlink signal of mobile communication, or the signal strength information does not meet a preset condition, which indicates that the terminal to be positioned is in a preset area right below the base station of the terminal to be identified, that is, the terminal to be positioned is far away from the base station, the initial position information of the terminal to be positioned cannot be corrected by using the position information of the base station. In this case, therefore, the initial position information of the terminal to be positioned determined by bluetooth positioning can be determined as the positioning result of the terminal to be positioned.
In this embodiment, no mobile communication downlink signal exists in a signal received by a terminal to be positioned, or signal strength information does not meet a preset condition, initial position information is determined as a positioning result of the terminal to be positioned, and the initial position information of the terminal to be positioned is not corrected by adopting the position information of a base station, so that the situation that the base station is far from the terminal to be positioned in practice, and positioning error of the terminal to be positioned is increased is avoided.
In an exemplary embodiment, the initial position information is determined by: transmitting the modulated signal to a base station; the base station is used for receiving the modulation signals through the antenna array, identifying the angle of the terminal to be positioned relative to the base station according to the modulation signals, and determining the initial position information of the terminal to be positioned according to the angle; and receiving initial position information returned by the base station.
In a specific implementation, the principle of bluetooth positioning of a terminal to be positioned is shown in fig. 3, firstly, the terminal to be positioned transmits a special modulation signal, a base station receives the modulation signal through a specially arranged antenna array, and further identifies the angle of the terminal to be positioned relative to the base station, so that the position of the terminal to be positioned relative to the base station is further determined, the initial position information of the terminal to be positioned is obtained by combining the position information of the base station and the position of the terminal to be positioned relative to the base station, and then the base station can return the obtained initial position information to the terminal to be positioned, so that the terminal to be positioned can obtain the initial position information positioned through bluetooth. When bluetooth positioning is used, the terminal to be positioned needs to have the function of supporting transmitting the specific modulation signal in a bluetooth baseband, and the base station needs to have the switching and scanning functions of an antenna array according to received bluetooth data.
In this embodiment, the terminal to be positioned determines its initial position information through bluetooth positioning, so as to implement position initialization, so that when the signal received by the terminal to be positioned does not have a mobile communication downlink signal, or the signal strength information of the existing mobile communication downlink signal does not meet a preset condition, the initial position information can be determined as a positioning result of the terminal to be positioned.
In one embodiment, to facilitate understanding of embodiments of the application by those skilled in the art, a specific example will be described below in conjunction with the accompanying drawings. Referring to fig. 4, an overall flow diagram of a terminal positioning method is shown, comprising the steps of:
(1) And when indoor positioning is started, acquiring initial position information of the terminal to be positioned through Bluetooth positioning.
(2) And detecting whether the terminal to be positioned has a 5G downlink signal. If not, the initial position information is used as a positioning result of the terminal to be positioned.
(3) If the 5G downlink signal exists, state parameters such as signal-to-noise ratio of the terminal to be positioned, reference signal receiving power and the like are collected and used as signal intensity information.
(4) And (3) carrying out condition matching on the signal strength information, wherein in order to accelerate the judging speed, a condition judging or decision tree method can be adopted for judging, firstly, whether the signal to noise ratio is larger than a first threshold value is judged, and if not, the initial position information is used as a positioning result of the terminal to be positioned.
(5) If the signal-to-noise ratio is greater than the first threshold, judging whether the received power of the reference signal is greater than the second threshold, and if not, taking the initial position information as a positioning result of the terminal to be positioned.
(6) And if the reference signal received power is greater than the second threshold value, optimizing the initial position information. Specifically, the initial position information is replaced by the position information of the base station corresponding to the 5G downlink signal, and the position information of the base station is used as a positioning result of the terminal to be positioned.
Compared with the prior art that only the Bluetooth positioning methods such as Bluetooth beacons or arrival angles are suitable for positioning, the application introduces the downlink signals of the 5G base station to correct the Bluetooth positioning, and has the following beneficial effects:
1. the original standard and flow of the Bluetooth arrival angle positioning method are not required to be modified, and only the Bluetooth positioning result is required to be used.
2. The 5G communication protocol is not involved, only the 5G signal measurement data of the current terminal is required to be read, and a terminal chip is not required to be specially changed.
3. The 5G network and the Bluetooth network do not need to interact, so that the network and the terminal do not need to be modified, and the quick deployment can be realized.
It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.
Based on the same inventive concept, the embodiment of the application also provides a terminal positioning device for realizing the above-mentioned terminal positioning method. The implementation of the solution provided by the device is similar to the implementation described in the above method, so the specific limitation in one or more embodiments of the terminal positioning device provided below may refer to the limitation of the terminal positioning method hereinabove, and will not be repeated herein.
In one embodiment, as shown in fig. 5, there is provided a terminal positioning device including: an acquisition module 510, a correction module 520, and a positioning module 530, wherein:
an obtaining module 510, configured to obtain signal strength information of a mobile communication downlink signal when detecting that a terminal to be located has a preset mobile communication downlink signal;
the correction module 520 is configured to perform correction processing on the initial position information of the terminal to be located when the signal strength information meets a preset condition, so as to obtain corrected position information; the initial position information is obtained by Bluetooth positioning of the terminal to be positioned;
and the positioning module 530 is configured to determine the corrected location information as a positioning result of the terminal to be positioned.
In one embodiment, the correction module 520 is further configured to obtain location information of a base station corresponding to the downlink signal of the mobile communication when the signal strength information meets a preset condition; and replacing the initial position information with the position information of the base station to obtain the corrected position information.
In one embodiment, the signal strength information includes a signal-to-noise ratio and a reference signal received power; the device also comprises a condition matching module, a signal-to-noise ratio acquisition module and a reference signal receiving power acquisition module, wherein the condition matching module is used for acquiring the signal-to-noise ratio and the priority of the reference signal receiving power; recursively inquiring the signal-to-noise ratio and the reference signal received power in a predetermined decision tree model according to the order of the priority from high to low to obtain a matching result between the signal strength information and a preset condition; the decision tree model is determined based on a first threshold corresponding to the signal-to-noise ratio and a second threshold corresponding to the reference signal received power.
In one embodiment, the signal strength information includes a signal-to-noise ratio and a reference signal received power; the condition matching module is also used for acquiring a first threshold corresponding to the signal-to-noise ratio and a second threshold corresponding to the reference signal receiving power; when the signal-to-noise ratio is larger than a first threshold and the reference signal received power is larger than a second threshold, determining that the signal strength information of the mobile communication downlink signal meets a preset condition.
In one embodiment, the apparatus further includes a threshold determining module for obtaining a calculation model for characterizing a relationship between a distance and a signal strength; the distance represents the distance between the terminal to be positioned and the base station corresponding to the mobile communication downlink signal; determining a preset distance range, and obtaining a signal intensity range according to the preset distance range and a calculation model; a second threshold is determined based on the signal strength range and a conversion relationship between the signal strength and the reference signal received power.
In one embodiment, the positioning module 530 is further configured to determine the initial position information as a positioning result of the terminal to be positioned if it is detected that the terminal to be positioned does not have a mobile communication downlink signal, or if the signal strength information does not meet a preset condition.
In one embodiment, the positioning module 530 is further configured to send a modulated signal to a base station; the base station is used for receiving the modulation signals through the antenna array, identifying the angle of the terminal to be positioned relative to the base station according to the modulation signals, and determining the initial position information of the terminal to be positioned according to the angle; and receiving initial position information returned by the base station.
The modules in the terminal positioning device may be implemented in whole or in part by software, hardware, or a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, a computer device is provided, which may be a terminal, and the internal structure of which may be as shown in fig. 6. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a terminal positioning method. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be keys, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the structure shown in FIG. 6 is merely a block diagram of some of the structures associated with the present inventive arrangements and is not limiting of the computer device to which the present inventive arrangements may be applied, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
In an embodiment, there is also provided a computer device comprising a memory and a processor, the memory having stored therein a computer program, the processor implementing the steps of the method embodiments described above when the computer program is executed.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when executed by a processor, carries out the steps of the method embodiments described above.
In an embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the steps of the method embodiments described above.
It should be noted that, the user information (including but not limited to user equipment information, user personal information, etc.) and the data (including but not limited to data for analysis, stored data, presented data, etc.) related to the present application are information and data authorized by the user or sufficiently authorized by each party, and the collection, use and processing of the related data need to comply with the related laws and regulations and standards of the related country and region.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase ChangeMemory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as Static Random access memory (Static Random access memory AccessMemory, SRAM) or dynamic Random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the embodiments provided herein may include at least one of a relational database and a non-relational database. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processor referred to in the embodiments provided in the present application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, or the like, but is not limited thereto.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.

Claims (11)

1. A terminal positioning method, the method comprising:
acquiring signal strength information of a mobile communication downlink signal under the condition that a terminal to be positioned is detected to have a preset mobile communication downlink signal;
when the signal strength information accords with a preset condition, correcting the initial position information of the terminal to be positioned to obtain corrected position information; the initial position information is obtained by carrying out Bluetooth positioning on the terminal to be positioned;
And determining the corrected position information as a positioning result of the terminal to be positioned.
2. The method according to claim 1, wherein when the signal strength information meets a preset condition, performing correction processing on the initial position information of the terminal to be positioned to obtain corrected position information, including:
when the signal strength information accords with a preset condition, acquiring the position information of a base station corresponding to the mobile communication downlink signal;
and replacing the initial position information with the position information of the base station to obtain the corrected position information.
3. The method of claim 1, wherein the signal strength information comprises a signal-to-noise ratio and a reference signal received power; the method further comprises the steps of:
acquiring the signal-to-noise ratio and the priority of the reference signal received power;
recursively inquiring the signal-to-noise ratio and the reference signal received power in a predetermined decision tree model according to the order of the priority from high to low to obtain a matching result between the signal strength information and the preset condition; the decision tree model is determined based on a first threshold corresponding to the signal-to-noise ratio and a second threshold corresponding to the reference signal received power.
4. The method of claim 1, wherein the signal strength information comprises a signal-to-noise ratio and a reference signal received power; the method further comprises the steps of:
acquiring a first threshold corresponding to the signal-to-noise ratio and a second threshold corresponding to the reference signal received power;
and when the signal-to-noise ratio is greater than the first threshold and the reference signal received power is greater than the second threshold, determining that the signal strength information of the mobile communication downlink signal meets the preset condition.
5. The method according to claim 3 or 4, wherein the second threshold corresponding to the reference signal received power is determined by:
acquiring a calculation model for representing the relation between the distance and the signal intensity; the distance represents the distance between the terminal to be positioned and the base station corresponding to the mobile communication downlink signal;
determining a preset distance range, and obtaining a signal intensity range according to the preset distance range and the calculation model;
the second threshold is determined based on the signal strength range and a conversion relationship between signal strength and reference signal received power.
6. The method according to any one of claims 1-4, further comprising:
If the mobile communication downlink signal does not exist in the terminal to be positioned or the signal strength information does not accord with the preset condition, determining the initial position information as a positioning result of the terminal to be positioned.
7. The method of claim 1, wherein the initial position information is determined by:
transmitting the modulated signal to a base station; the base station is used for receiving the modulation signals through an antenna array, identifying the angle of the terminal to be positioned relative to the base station according to the modulation signals, and determining initial position information of the terminal to be positioned according to the angle;
and receiving the initial position information returned by the base station.
8. A terminal positioning device, the device comprising:
the acquisition module is used for acquiring signal strength information of a mobile communication downlink signal under the condition that a terminal to be positioned is detected to have a preset mobile communication downlink signal;
the correction module is used for correcting the initial position information of the terminal to be positioned when the signal intensity information accords with a preset condition to obtain corrected position information; the initial position information is obtained by carrying out Bluetooth positioning on the terminal to be positioned;
And the positioning module is used for determining the corrected position information as a positioning result of the terminal to be positioned.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the terminal positioning method according to any of claims 1 to 7 when the computer program is executed.
10. A computer readable storage medium having stored thereon a computer program, characterized in that the computer program when executed by a processor realizes the steps of the terminal positioning method according to any of claims 1 to 7.
11. A computer program product comprising a computer program, characterized in that the computer program, when being executed by a processor, implements the steps of the terminal positioning method according to any of claims 1 to 7.
CN202310891224.5A 2023-07-19 2023-07-19 Terminal positioning method, device, computer equipment and storage medium Pending CN117082614A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118075872A (en) * 2024-04-19 2024-05-24 中国电信股份有限公司 Positioning data processing method, device, program product and electronic equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118075872A (en) * 2024-04-19 2024-05-24 中国电信股份有限公司 Positioning data processing method, device, program product and electronic equipment

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