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CN110118953A - A kind of localization method, apparatus and system - Google Patents

A kind of localization method, apparatus and system Download PDF

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Publication number
CN110118953A
CN110118953A CN201810111026.1A CN201810111026A CN110118953A CN 110118953 A CN110118953 A CN 110118953A CN 201810111026 A CN201810111026 A CN 201810111026A CN 110118953 A CN110118953 A CN 110118953A
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China
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rrus
signal
signal strength
user
rru
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CN201810111026.1A
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吴国铖
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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Priority to CN201810111026.1A priority Critical patent/CN110118953A/en
Publication of CN110118953A publication Critical patent/CN110118953A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0257—Hybrid positioning
    • 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
    • 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
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

This application discloses a kind of localization methods, apparatus and system, when UE sends subscriber signal, this method comprises: network side equipment demodulates the subscriber signal received by multiple far-end RF module RRU；The network side equipment carries out location Calculation to the UE according to the position of the subscriber signal and the multiple RRU, determines the position UE according to location Calculation result.It solves location algorithm in the prior art and largely all relies on terminal and be actively engaged in, there is technical issues that deployment and application.

Description

Positioning method, device and system
Technical Field
The present application relates to the field of communications technologies, and in particular, to a positioning method, apparatus, and system.
Background
In recent years, with the widespread deployment of wireless networks, the mobile internet has exhibited explosive growth. Among them, Location Based Service (LBS) greatly improves the informatization level of the earth society, and strongly promotes the development of digital economy. The LBS is based on the premise that the real-time position of a user can be acquired, then positioning service is provided for the user by utilizing position information, or the behavior preference of the user is analyzed, and a merchant is assisted to make a business strategy, develop marketing activities and the like. Since the GPS signal cannot be received indoors, the high-precision indoor positioning technology determines the service quality of the LBS to some extent.
The positioning technology is implemented by means of beacons deployed in advance in space. The location of the beacon is known and wireless signals can be transceived. And calculating the position difference between the terminal and the beacon by using the signal difference, and calculating the position information of the terminal by combining the position information of the beacon.
There are many types of beacons for positioning. Common beacons include satellite, WiFi, bluetooth, mobile base station, RFID (radio frequency Identification), and the like. The existing common indoor positioning technology comprises triangulation positioning, and the specific implementation can be as follows:
the wireless signal propagation distance between the terminal and the beacons is calculated, and when the number of beacons is large (at least larger than three), the positions of the terminals can be determined by combining the positions of the beacons and the distances from the terminals to the beacons (as shown in fig. 1).
Therefore, the key of the triangulation method is to obtain the distance d between the terminal and the beaconi. The higher the accuracy of the distance, the higher the accuracy of the positioning. Currently, there are two main methods for obtaining the distance difference.
First, the propagation delay of the beacon radio signal is exploited. di＝c·Δti. The accuracy of the distance is thus dependent on the propagation delay deltatiThe measurement accuracy of (2). The existing Global Positioning System (Global Positioning System,GPS) uses beacons as satellites, and the GPS measures the distance from a satellite with a known position to a user receiver, and then combines the data of a plurality of satellites to know the specific position of the receiver. The GPS satellite is provided with an expensive cesium atomic clock, the time precision of the cesium atomic clock is about 1s, the magnitude of the accumulated error is about 10-13And second. Due to the high cost, the general beacon does not have the condition for measuring the propagation delay.
Second, the path loss of beacon radio signal propagation is exploited. In free space, the path loss is proportional to the square of the distance, and thus measuring the path loss can obtain information of the distance.
The implementation mode based on the existing positioning algorithm can be determined, most of the positioning algorithm in the prior art depends on active participation of the terminal, and the technical problem of high deployment and application complexity exists.
Disclosure of Invention
The application provides a positioning method, a positioning device and a positioning system, which are used for solving the technical problems that most of positioning algorithms depend on active participation of terminals and the deployment and application complexity exists in the prior art.
In a first aspect, the present application provides a positioning method, where when a user equipment UE sends a user signal, the method includes:
the network side equipment demodulates the user signals received by the plurality of remote radio frequency modules RRU;
and the network side equipment performs positioning calculation on the UE according to the user signal and the positions of the RRUs, and determines the position of the UE according to a positioning calculation result.
In a possible implementation manner, the performing, by the network side device, location calculation on the UE according to the user signal and the positions of the plurality of RRUs includes:
sequencing the plurality of RRUs by utilizing the signal intensity and the signal intensity fluctuation of the user signal received by each RRU in the plurality of RRUs to obtain a sequencing result;
selecting a plurality of target RRUs from the plurality of RRUs according to the sequencing result;
and the network side equipment performs positioning calculation on the UE according to the user signals received by the plurality of target RRUs and the positions of the plurality of target RRUs.
In one possible embodiment, the signal strength is represented by the formula:
determining;
where K' is the time range, K is the time point, σn(t) is the variance of signal strength, RxSignal'n(t) is the output signal intensity of the nth RRU at the time t;is the average received power.
In a possible implementation manner, the ranking the plurality of RRUs by using the signal strength and the signal strength fluctuation of the received user signal of each of the plurality of RRUs, and obtaining a ranking result includes:
determining a first ranking importance ratio corresponding to the signal strength and a second ranking importance ratio corresponding to the signal strength fluctuation;
and performing comprehensive operation on a first sorting result obtained by using the signal intensity, a second sorting result obtained by using the signal intensity fluctuation, the first sorting importance ratio and the second sorting importance ratio to obtain the sorting result.
In a possible implementation manner, when the number of the plurality of RRUs is 4, the performing, by the network side device, a positioning calculation on the UE according to the user signal and the positions of the plurality of RRUs includes:
using the formula:
determining a location (x, y) of the UE; wherein,diis the distance between the ith RRU and the UE,(xi,yi) Is the known RRU location.
In a second aspect, the present application provides a network side device, where when a user equipment UE sends a user signal, the network side device includes:
the demodulation module is used for demodulating the user signals received by the plurality of remote radio frequency modules RRUs;
and the positioning module is used for performing positioning calculation on the UE according to the user signal and the positions of the RRUs and determining the position of the UE according to a positioning calculation result.
In a possible implementation manner, the positioning module is specifically configured to sort the plurality of RRUs by using the signal strength and the signal strength fluctuation of the user signal received by each of the plurality of RRUs, so as to obtain a sorting result; selecting a plurality of target RRUs from the plurality of RRUs according to the sequencing result; and performing positioning calculation on the UE according to the user signals received by the plurality of target RRUs and the positions of the plurality of target RRUs.
In one possible embodiment, the location module is further configured to utilize a formulaDetermining the signal strength;
wherein K' is a time rangeCircumference, k being the time point, σn(t) is the variance of signal strength, RxSignal'n(t) is the output signal intensity of the nth RRU at the time t;is the average received power.
In a possible implementation manner, the positioning module is specifically configured to determine a first ranking importance ratio corresponding to the signal strength and a second ranking importance ratio corresponding to the signal strength fluctuation; and performing comprehensive operation on a first sorting result obtained by using the signal intensity, a second sorting result obtained by using the signal intensity fluctuation, the first sorting importance ratio and the second sorting importance ratio to obtain the sorting result.
In a possible implementation manner, when the number of the plurality of RRUs is 4, the positioning module is further configured to utilize a formula:
determining a location (x, y) of the UE; wherein,diis the distance between the ith RRU and the UE,(xi,yi) Is the known RRU location.
In a third aspect, the present application further provides a computing device comprising:
at least one processor, and
a memory communicatively coupled to the at least one processor, a communication interface;
wherein the memory stores instructions executable by the at least one processor, and the at least one processor performs the method of any one of the possible embodiments of the first aspect using the communication interface by executing the instructions stored by the memory.
In a fourth aspect, the present application provides a computer-readable storage medium storing computer instructions that, when executed on a computer, cause the computer to perform the method of any one of the possible implementations of the first aspect.
The beneficial effect of this application is as follows:
the positioning method calculates the position of indoor user equipment based on IRT and RSRP joint detection, and achieves the beneficial effects that the deployment is convenient, the user equipment does not need to actively participate, and the deployment complexity of the indoor positioning system can be obviously reduced by utilizing a distributed pico-station system which is widely deployed indoors.
Drawings
FIG. 1 is a schematic diagram of an application scenario of a triangulation method in the prior art;
fig. 2 is a schematic flowchart of a positioning method according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a system architecture suitable for use in a method according to an embodiment of the present application;
fig. 4 is a schematic flowchart of a method for screening RRUs according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a network-side device provided by an embodiment of the present application;
FIG. 6 is a schematic structural diagram of a positioning system according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a computing device according to an embodiment of the present application.
Detailed Description
Under the condition that the indoor environment is relatively complex, the reliability of the signal strength is not high, for example, the signal passes through a wall to cause large signal attenuation, so that the distance between a signal source and a terminal calculated by using a triangulation method is larger than the actual distance, and a positioning error is caused. Are not suitable for indoor deployment. In addition, most of the existing positioning algorithms depend on active participation of the terminal, and the technical problem of high deployment and application complexity exists.
Based on the above problems in the prior art, an embodiment of the present application provides a positioning method, where in the method, when a user equipment UE sends a user signal, the method includes:
the network side equipment demodulates the user signals received by the plurality of remote radio frequency modules RRU;
and the network side equipment performs positioning calculation on the UE according to the user signal and the positions of the RRUs, and determines the position of the UE according to a positioning calculation result.
The method provided by the embodiment of the application utilizes the uplink signal fixedly sent by the terminal in the mobile communication as the observed quantity, can support the positioning service without developing additional application by the terminal, reduces the deployment and the application complexity and is convenient to realize.
The method and apparatus provided by the embodiments of the present application are further described in detail below with reference to the accompanying drawings and specific application scenarios:
example one
In the following, a positioning method provided in an embodiment of the present application is described in further detail with reference to fig. 2 of the specification, and when a User Equipment (UE) sends a user signal, a specific implementation of the method may include the following steps:
the existing distributed pico-cell is used for making up the deficiency of the outdoor deep coverage capability of the macro-cell, and is widely deployed in indoor scenes such as markets, supermarkets and hotels. The single-point coverage radius in the indoor open scene is about 20 m. And multiple points can be combined into one cell by a cell combining technology, that is, at most, N beacons (which may be prrus in this embodiment) can exist simultaneously to detect the user signal of the UE.
The system architecture shown in fig. 3 is a deployment structure for indoor positioning by using distributed pico-base stations. In this embodiment, the base station side completes reception and demodulation of the user Signal, and sends parameters for positioning, IRT (impulse response timing) information, RSRP (Reference Signal receiving power) information, and the like to an MEC (Mobile Edge Computing) device through an S1 port, performs positioning calculation by the MEC, and transfers the positioning result to a third party for use through an ethernet interface.
Based on the system architecture, the method provided by this embodiment may specifically include the following implementation steps:
step 201, a network side device demodulates user signals received by a plurality of RRUs;
in this embodiment, the radio channel has large-scale fading and small-scale fading, which causes the received signal to fluctuate within a certain range, so that the user signal received by the RRU needs to be filtered. In addition, the position of the terminal has continuity in a period of time, and the user signal should be continuously changed with the position, resulting in a certain memory of the user signal. The user signal can therefore be pre-processed for filtering as follows:
RxSignal′n(t)＝wt-0·RxSignaln(t-0)+...+wt-k·RxSignaln(t-k)+...
+wt-K·RxSignaln(t-K)
wherein, RxSignaln(t-k) is the user signal strength received by the ith RRU at time t-k, wt-kThe signal intensity of the user at the moment of t-kThe occupied weight of the degree meets the following requirements:RxSignaln' (t) is the filtered output signal strength of the nth RRU at the time t.
Step 202, the network side device performs positioning calculation on the UE according to the user signal and the positions of the plurality of RRUs, and determines the position of the UE according to the positioning calculation result.
In this embodiment, since a plurality of distributed pico-base stations may be merged in a single cell, if all distributed pico-base stations are used for calculation, a higher calculation amount may be caused, so that after a suitable RRU is screened according to a certain criterion, positioning calculation is performed, and a specific screening manner may be (as shown in fig. 4):
step 401, utilizing the signal strength and the signal strength fluctuation of the user signal received by each RRU in the plurality of RRUs to sequence the plurality of RRUs to obtain a sequencing result;
a, the signal strength represents the propagation distance of the signal, and in order to perform positioning calculation by using a user signal with higher reliability and relatively short distance, the RxSignal of the signal strength obtained by filtering a plurality of (possibly N) RRUs at the t-th time is requiredn' (t) sorting and markingFor example, if the strength value of the user signal received by the nth RRU is the greatest at time t, the RRU can be marked as the nth RRU
And b, the signal intensity fluctuation represents the stability of a transmission channel, so that the variance of the user signal intensity received by the RRU in a certain time range needs to be calculated, and a more stable signal is screened out. Assuming that the time range is K', the variance σ is calculatedn(t) then based on the calculated sigman(t) ordering and labeling RRUs(i.e., normalized signal strength fluctuation value of the nth RRU at time t), for example, σ of the nth RRU at time tn(t) maximum, thenWherein:
in this embodiment, because the final sorting result is obtained after the two parameters of signal strength and signal strength fluctuation are considered together, the ratio of the signal strength and signal strength fluctuation to the final sorting result may be different based on the actual requirement of emphasis, and may be dynamically adjusted according to the actual ratio of the reference, where the implementation of the specific sorting may be:
determining a first ranking importance ratio corresponding to the signal strength and a second ranking importance ratio corresponding to the signal strength fluctuation;
and performing comprehensive operation on a first sorting result obtained by using the signal intensity, a second sorting result obtained by using the signal intensity fluctuation, the first sorting importance ratio and the second sorting importance ratio to obtain the sorting result.
If a specific formula is used to describe the sorting method, the following steps may be performed:
results sorted by signal conditions(i.e., first ranking results) and results ranked using signal strength fluctuations(i.e., second ranking result) calculating selection indexAnd the proportion W of the first sequencing resultrsrpAnd the ratio W of the second sorting resultσ，Wrsrp+Wσ1, final sorting result Sn(t) may be:
step 402, selecting a plurality of target RRUs from the plurality of RRUs according to the sorting result;
because three unknowns of x, y and α are needed, at least 4 pieces of RRU information are needed to form 3 equations for solving, S can be selected for time tn(t) a minimum of 4 RRUs.
Step 403, the network side device performs positioning calculation on the UE according to the user signals received by the multiple target RRUs and the positions of the multiple target RRUs.
The existing basic formula of the triangulation method is as follows:
wherein, (x, y) is the terminal position; the calculation needs to be performed in conjunction with the above equation set (1). (x)i,yi) Is a known beacon location; diIs the distance between the ith beacon and the terminal.
In an LTE network, a user signal propagation delay may be calculated by using an IRT estimation result of a TA (Tracking Area) and multiple RRUs, and then a distance between a beacon and a terminal is calculated by using the propagation delay, which includes the following specific calculation method:
di＝(TA-TDi_peak)/2*const
wherein const ═ c × TsC is the propagation velocity of electromagnetic waves, TsIs the sampling interval. TDiPeak is the first output of the IRT estimatePath propagation delay irti。
Direct calculation of distance d from IRTiIn the process, the problem that the calculation result is large often exists, and when the least square method is adopted for solving, a user is likely to deviate from the precision range. Based on the above problems of the existing algorithm, in the method provided in the embodiment of the present application, the equation set (1) is modified, and when the number of the plurality of RRUs is 4, the position (x, y) formula of the UE may be expressed as:
diis the distance between the ith RRU and the UE,(xi,yi) Is the known RRU location.
Example two
As shown in fig. 5, the present application further provides a network side device, where the network side device performs information interaction with a UE, and when the UE sends a user signal, the network side device includes:
a demodulation module 501, configured to demodulate the user signal received by multiple remote radio units RRUs;
a positioning module 502, configured to perform positioning calculation on the UE according to the user signal and the positions of the plurality of RRUs, and determine the position of the UE according to a positioning calculation result.
Optionally, the positioning module 502 is specifically configured to sort the plurality of RRUs by using the signal strength and the signal strength fluctuation of the user signal received by each RRU in the plurality of RRUs, so as to obtain a sorting result; selecting a plurality of target RRUs from the plurality of RRUs according to the sequencing result; and performing positioning calculation on the UE according to the user signals received by the plurality of target RRUs and the positions of the plurality of target RRUs.
Optionally, the location module 502 is further configured to utilize a formulaDetermining the signal strength; where K' is the time range, K is the time point, σn(t) is the variance of the signal strength, RxSignaln' (t) is the output signal strength of the nth RRU at the time t;is the average received power.
Further, the positioning module is specifically configured to determine a first ranking importance ratio corresponding to the signal strength and a second ranking importance ratio corresponding to the signal strength fluctuation; and performing comprehensive operation on a first sorting result obtained by using the signal intensity, a second sorting result obtained by using the signal intensity fluctuation, the first sorting importance ratio and the second sorting importance ratio to obtain the sorting result.
Optionally, when the number of the plurality of RRUs is 4, the positioning module is further configured to utilize a formula:
determining a location (x, y) of the UE; wherein,diis the distance between the ith RRU and the UE,(xi,yi) Is the known RRU location.
EXAMPLE III
As shown in fig. 6, the present application further provides a positioning system, which may specifically include a User Equipment (UE), an RRU, and an MEC;
the user equipment 601 is used for sending a user signal to the base station side equipment;
the base station side device 602 is configured to implement receiving and demodulating of a user signal, and send a parameter, IRT information, RSRP information, and the like obtained by demodulation and used for positioning the terminal device 601 to the MEC through an S1 port; the base station side equipment at least comprises a plurality of RRUs and BBUs;
and the MEC603 is configured to perform positioning calculation on the UE according to the user signals received by the plurality of RRUs and the positions of the plurality of RRUs, determine the position of the UE according to the positioning calculation result, and transmit the positioning result to a third party through an ethernet interface for use.
When the number of the plurality of RRUs is 4, the MEC performs positioning calculation on the UE according to a user signal and the positions of the plurality of RRUs, and the positioning calculation comprises the following steps:
using the formula:
determining a location (x, y) of the UE; wherein,diis the distance between the ith RRU and the UE,(xi,yi) Is the known RRU location.
Example four
As shown in fig. 7, based on the same inventive concept, an embodiment of the present application further provides a computing device, including:
at least one processor 701, and
a memory 702, a communication interface 703 communicatively coupled to the at least one processor 701;
the memory 702 stores instructions executable by the at least one processor 701, and the at least one processor 701 executes the instructions stored in the memory 702 to perform a positioning method according to an embodiment of the present application by using the communication interface 703.
Based on the same inventive concept, embodiments of the present application further provide a computer-readable storage medium, where computer instructions are stored, and when the computer instructions are executed on a computer, the computer is caused to execute the positioning method according to the first embodiment of the present application.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (9)

1. A positioning method, when a User Equipment (UE) transmits a user signal, comprises:
the network side equipment demodulates the user signals received by the plurality of remote radio frequency modules RRU;
sequencing the plurality of RRUs by utilizing the signal intensity and the signal intensity fluctuation of the user signal received by each RRU in the plurality of RRUs to obtain a sequencing result;
selecting a plurality of target RRUs from the plurality of RRUs according to the sequencing result;
and the network side equipment performs positioning calculation on the UE according to the user signals received by the plurality of target RRUs and the positions of the plurality of target RRUs.
2. The method of claim 1, wherein the signal strength is represented by the formula:
determining;
where K' is the time range, K is the time point, σn(t) is the variance of the signal strength, RxSignaln(t) is the output signal intensity of the nth RRU at the time t; p is the average received power.
3. The method of claim 1, wherein the ranking the plurality of RRUs according to the signal strength and the signal strength fluctuation of the received user signal for each of the plurality of RRUs comprises:
determining a first ranking importance ratio corresponding to the signal strength and a second ranking importance ratio corresponding to the signal strength fluctuation;
and performing comprehensive operation on a first sorting result obtained by using the signal intensity, a second sorting result obtained by using the signal intensity fluctuation, the first sorting importance ratio and the second sorting importance ratio to obtain the sorting result.
4. The method of any one of claims 1 to 3, wherein when the number of the plurality of RRUs is 4, the performing, by the network side device, the positioning calculation on the UE according to the user signal and the positions of the plurality of RRUs includes:
using the formula:
determining a location (x, y) of the UE; wherein,diis the distance between the ith RRU and the UE,(xi,yi) Is the known RRU location.
5. A network side device, wherein when a user equipment UE transmits a user signal, the network side device comprises:
the demodulation module is used for demodulating the user signals received by the plurality of remote radio frequency modules RRUs;
and the positioning module is used for performing positioning calculation on the UE according to the user signal and the positions of the RRUs and determining the position of the UE according to a positioning calculation result.
6. The network side device of claim 5, wherein the positioning module is specifically configured to rank the plurality of RRUs by using the signal strength and the signal strength fluctuation of the received user signal of each of the plurality of RRUs, so as to obtain a ranking result; selecting a plurality of target RRUs from the plurality of RRUs according to the sequencing result; and performing positioning calculation on the UE according to the user signals received by the plurality of target RRUs and the positions of the plurality of target RRUs.
7. The network-side device of claim 6, wherein the location module is further configured to utilize a formulaDetermining the signal strength;
where K' is the time range, K is the time point, σn(t) is the variance of the signal strength, RxSignaln' (t) is the output signal strength of the nth RRU at the time t;is the average received power.
8. The network-side device of claim 6, wherein the positioning module is specifically configured to determine a first ranking importance ratio corresponding to the signal strength and a second ranking importance ratio corresponding to the signal strength fluctuation; and performing comprehensive operation on a first sorting result obtained by using the signal intensity, a second sorting result obtained by using the signal intensity fluctuation, the first sorting importance ratio and the second sorting importance ratio to obtain the sorting result.
9. The network side device according to any one of claims 5 to 8, wherein when the number of the plurality of RRUs is 4, the positioning module is further configured to utilize a formula:
determining a location (x, y) of the UE; wherein,diis the distance between the ith RRU and the UE,(xi,yi) Is the known RRU location.
CN201810111026.1A 2018-02-05 2018-02-05 A kind of localization method, apparatus and system Pending CN110118953A (en)

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CN112153561A (en) * 2020-09-03 2020-12-29 中国联合网络通信集团有限公司 Blind guiding method and device
WO2021164375A1 (en) * 2020-02-19 2021-08-26 中兴通讯股份有限公司 Terminal positioning method, server, and storage medium
CN116887288A (en) * 2023-07-10 2023-10-13 武汉船舶通信研究所(中国船舶集团有限公司第七二二研究所) 5G network deployment method under special scene

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Application publication date: 20190813