CN109451533A - A kind of rough distance measuring method based on A1 observing and controlling - Google Patents
A kind of rough distance measuring method based on A1 observing and controlling Download PDFInfo
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- CN109451533A CN109451533A CN201811521467.5A CN201811521467A CN109451533A CN 109451533 A CN109451533 A CN 109451533A CN 201811521467 A CN201811521467 A CN 201811521467A CN 109451533 A CN109451533 A CN 109451533A
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- base station
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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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
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
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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
- H04W64/006—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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- Computer Networks & Wireless Communication (AREA)
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention proposes a kind of rough distance measuring method based on A1 observing and controlling, this method is in LTE system, after the completion of UE initiates registration and RRC connection foundation to base station, base station obtains the IMSI number of UE first, then A1 measurement control message is issued to UE, and the trigger threshold for configuring A1 event be minimum, report number be infinitely, its remainder sets on demand, UE can persistently report A1 measurement report to base station, base station obtains the signal strength RSRP value of the base station of UE measurement therein, estimates the distance between UE and base station by the situation of change of RSRP.This method can calculate roughly in cell range UE between base station at a distance from, ignore influence of the environmental factors such as temperature to UE measurement sensitivity, field data show range accuracy is about in 0.1m.It, can be with the position of coarse localization UE in a network using this method meanwhile in the case where known base station location information in a network.
Description
Technical field
The present invention relates to LTE mobile communication technology field, especially a kind of rough distance measuring method based on A1 observing and controlling.
Background technique
Currently, the small base station LTE is in Internet of Things with the fast development of small station technology to reach its maturity with Internet of Things industry
The application in field is also more and more extensive, and typical case scene includes mobile-phone payment, intelligent entrance guard, fence etc..At these
In application scenarios, when carrying out related service, often require to obtain using small base station as the management system of core some relevant
UE information, such as the distance between UE and base station.Three kinds of UE location technologies are defined in LTE specification, are ECID, A-GNSS respectively
And OTDOA, wherein ECID realizes positioning by the ID of cell where obtaining UE；A-GNSS is by mobile network information and defends
Star navigation information positions to realize；OTDOA is by measuring the time difference of multiple base station signals arrival and utilizing known base station position
Confidence breath positions to realize.In the practical application scene of above-mentioned small base station, because the coverage area that business needs is smaller,
The quantity of base station deployment is often fewer, is all many times single base station networking, network structure is simple, but because of business demand pair
Range accuracy and requirement of real-time are relatively high, while single base station is limited by system resource and causes computing capability very limited.ECID
Although simple and convenient, cell-level can only be navigated to, it is inaccurate；A-GNSS registration, but process is more complex, time delay compared with
Greatly, higher cost；OTDOA registration, but the additional deployment quantity for increasing base station is needed, while also will increase the calculating of base station
Load, higher cost.Therefore, the above method can not temporarily be applied in the small base station related application scene of current LTE, in small range
The interior method for carrying out ranging to UE not yet occurs.
Measurement in LTE system is primarily referred to as mobility measurements of the UE under connected state.Base station is configured to UE sending measuring
Afterwards, UE according in measuring configuration measurement object, report configuration (including event type, trigger threshold, measurement amount, report interval,
Report number etc.) etc. parameters detect the signal condition of this cell or adjacent cell, fill in the content that measurement reports and measured with sending
The mode of report feeds back to base station, includes the relevant information of the measurement event reported in measurement report.In LTE system, A1 and
A2 measurement event is all the same frequency measuring case in LTE system, and wherein the report condition of A1 measurement event is the sheet that UE is measured
The channel quality of cell is greater than trigger threshold, and the report condition of A2 measurement event is that the channel quality of this cell that UE is measured is small
In trigger threshold.Herein, we choose RSRP (reference signal receiving intensity) as measurement amount to measure channel quality.
Summary of the invention
Goal of the invention: to solve the above-mentioned problems, the present invention is directed to the specific feature of the small base station applies of LTE, proposes one kind
Rough distance measuring method based on A1 observing and controlling, in LTE system, after the completion of UE initiates registration and RRC connection foundation to base station, base
It stands and obtains the IMSI number of UE first, then issue A1 measurement control message to UE, and the trigger threshold for configuring A1 event is most
Low value reports number to set on demand for unlimited, its remainder, and UE can persistently report A1 measurement report to base station, and base station obtains it
In UE measurement base station signal strength RSRP value, the distance between UE and base station are estimated by the situation of change of RSRP.
Technical solution: in order to realize the above technical effect, technical solution proposed by the present invention are as follows:
A kind of rough distance measuring method based on A1 observing and controlling, the method comprising the steps of:
(1) cell of the UE in base station initiates registration, and establishes RRC connection；
(2) after the completion of RRC connection is established, core net forged identity checking request message is copied in base station, and by authentication
Request message is handed down to UE, and request UE reports IMSI number, and UE replys authentication response message to base station, authentication response
IMSI number is carried in information, base station saves IMSI number after receiving；
(3) base station issues RRC connection reconfiguration and sets message to UE, sets the measurement control letter that message includes in RRC connection reconfiguration
A1 observing and controlling information is carried in member, and the trigger threshold for configuring A1 event is minimum 0, to report number be unlimited；UE replys RRC
Connection reconfiguration, which is set, completes message to base station, acknowledges receipt of the RRC connection reconfiguration and sets message；
(4) UE sets the A1 observing and controlling information in message according to RRC connection reconfiguration and carries out test constantly to base station signal, and continues
Reporting measurement reports, the signal strength RSRP of the base station comprising UE measurement in measurement report, base station receives the measurement report of UE transmission
It accuses and reads RSRP value therein；
(5) corresponding UE and itself distance d are estimated according to the RSRP value of reading in base station:
Wherein, PtFor the reference signal power of base station, GtFor the transmitter antenna gain (dBi) of base station, GrIncrease for the receiving antenna of UE
Benefit, f are the working frequency of base station, PrFor the power of the UE base station signal received,
Further, the process for establishing RRC connection are as follows:
UE sends RRC connection request message to base station, and base station replys RRC connection and establishes message to UE, UE reply RRC connection
It establishes and completes message to base station.
The utility model has the advantages that compared with prior art, present invention has the advantage that
In the present invention, base station obtains the IMSI number of UE first, then issues A1 observing and controlling to UE, it is made persistently to report A1
The distance between UE and base station are estimated by the situation of change of RSRP in measurement report, base station.This method can be in cell range
Interior rough measuring and calculating the distance between UE and base station, ignore influence of the environmental factors such as temperature to UE measurement sensitivity, measured data
Show range accuracy about in 0.1m.Meanwhile in the case where known base station location information in a network, also using this method
It can be with the position of coarse localization UE in a network.
Detailed description of the invention
Fig. 1 is flow chart of the invention；
Fig. 2 is the system architecture diagram in embodiment.
Specific embodiment
The present invention is directed to the specific feature of the small base station applies of LTE, proposes a kind of rough distance measuring method based on A1 observing and controlling,
In LTE system, after the completion of UE initiates registration and RRC connection foundation to base station, base station obtains the IMSI number of UE first, then
A1 measurement control message is issued to UE, and the trigger threshold for configuring A1 event is minimum, number is reported to be unlimited, its remainder
Setting, UE can persistently report A1 measurement report to base station on demand, and base station obtains the signal strength of the base station of UE measurement therein
RSRP value estimates the distance between UE and base station by the situation of change of RSRP.With reference to the accompanying drawing to the present invention make more into
The explanation of one step.
It is illustrated in figure 2 the system architecture diagram that embodiment provides, within the system, the Signalling exchange stream between base station and UE
Journey is as follows:
1. UE initiates registration in cell 1, UE sends RRC connection request message to base station；
2. base station replys RRC connection and establishes message to UE；
3. UE replys RRC connection setup complete message to base station, the process for establishing RRC connection to this UE terminates；
4. core net forged identity checking request message is copied in base station, and authentication is asked after the completion of RRC connection is established
Message is asked to be handed down to UE, request UE reports IMSI number；
5. UE replys authentication response message to base station, IMSI number is carried in authentication response message, base station is received
IMSI number is saved after；
6. base station issues RRC connection reconfiguration and sets message to UE, the measurement that message includes is set in RRC connection reconfiguration and controls cell
Middle carrying A1 observing and controlling information, and the trigger threshold for configuring A1 event in A1 observing and controlling information be minimum 0, report between be divided into
240ms, report number to be unlimited (infinity), its remainder be default value, guarantee A1 event must be triggered；
7. UE replys RRC connection reconfiguration and sets completion message to base station, above-mentioned configuration is acknowledged receipt of；
8. UE sets the A1 observing and controlling information in message according to RRC connection reconfiguration and carries out test constantly to base station signal, because of A1
The trigger threshold of event is minimum, so A1 event is inherently triggered, therefore UE continues reporting measurement reports, measurement report
Content be A1 event, and the signal strength RSRP of the base station measured in measurement report comprising UE；Base station receives UE transmission
Measurement report simultaneously reads RSRP value therein, and the process measured to this A1 terminates；The measurement sensitivity of base station reference UE, passes through
The situation of change of RSRP estimates the distance between UE and base station, and UE is closer from base station, the RSRP value reported is bigger, and passes through
IMSI distinguishes different UE；Meanwhile the location information with reference to known base station in a network, it can be with coarse localization UE in network
In position.
In above-mentioned steps, corresponding UE and itself distance d are estimated according to the RSRP value of reading in base station:
Wherein, PtFor the reference signal power of base station, GtFor the transmitter antenna gain (dBi) of base station, GrIncrease for the receiving antenna of UE
Benefit, f are the working frequency of base station, PrFor the power of the UE base station signal received,
In above-mentioned steps, 1.~it is 3. the process that UE establishes RRC connection；4.~it is 5. the IMSI number that base station obtains UE
Process；6.~it is 8. the process that A1 is measured.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the professional skill of this field
For art personnel, the present invention can there are many variations.All any modifications made in the spirit and principles in the present invention are equally replaced
It changes and improves, should all be included in the protection scope of the present invention.
Claims (2)
1. a kind of rough distance measuring method based on A1 observing and controlling, which is characterized in that comprising steps of
(1) cell of the UE in base station initiates registration, and establishes RRC connection；
(2) after the completion of RRC connection is established, core net forged identity checking request message is copied in base station, and by authentication request
Message is handed down to UE, and request UE reports IMSI number, and UE replys authentication response message to base station, authentication response message
Middle carrying IMSI number, base station save IMSI number after receiving；
(3) base station issues RRC connection reconfiguration and sets message to UE, in the measurement control cell that RRC connection reconfiguration sets that message includes
A1 observing and controlling information is carried, and the trigger threshold for configuring A1 event is minimum 0, to report number be unlimited；UE replys RRC connection
It reconfigures and completes message to base station, acknowledge receipt of the RRC connection reconfiguration and set message；
(4) UE sets the A1 observing and controlling information in message according to RRC connection reconfiguration and carries out test constantly to base station signal, and persistently reports
Measurement report, the signal strength RSRP of the base station comprising UE measurement in measurement report, base station receives the measurement report of UE transmission simultaneously
Read RSRP value therein；
(5) corresponding UE and itself distance d are estimated according to the RSRP value of reading in base station:
Wherein, PtFor the reference signal power of base station, GtFor the transmitter antenna gain (dBi) of base station, GrFor the receiving antenna gain of UE, f
For the working frequency of base station, PrFor the power of the UE base station signal received,
2. a kind of rough distance measuring method based on A1 observing and controlling according to claim 1, which is characterized in that described to establish RRC
The process of connection are as follows:
UE sends RRC connection request message to base station, and base station replys RRC connection and establishes message to UE, and UE reply RRC connection is established
Message is completed to base station.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022077169A1 (en) * | 2020-10-12 | 2022-04-21 | Lenovo (Beijing) Limited | Method and apparatus for ranging-based services |
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