CN112566178A - OTDOA-based terminal positioning method and device - Google Patents
OTDOA-based terminal positioning method and device Download PDFInfo
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- H—ELECTRICITY
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Abstract
The invention discloses a terminal positioning method and a device based on OTDOA, wherein the method comprises the following steps: acquiring information of adjacent base stations of a terminal, wherein the information of the adjacent base stations comprises OTDOA auxiliary data of Positioning Reference Signal (PRS) configuration information of each adjacent base station; sending OTDOA auxiliary data to the terminal to trigger the terminal to measure PRS of each adjacent base station; receiving a measurement report which is sent by a terminal and contains PRS and RSTD of each adjacent base station; and based on the measurement report, positioning the terminal according to the OTDOA positioning method and sending the positioning information to the terminal. By adopting the invention, the information of the adjacent base station of the terminal is acquired through the positioning service system, the operation is simple and flexible, the efficiency is high, compared with the method for acquiring the information of the adjacent base station through the terminal in the related technology, the work of the terminal can be lightened, the efficiency of the terminal is improved, the additional cost is not required to be increased, the method can be popularized on the basis of the existing network, and the popularization value is high.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for positioning a terminal based on OTDOA.
Background
With the demand of users, more and more mobile phone applications use mobile phone positioning technologies, such as local search applications, various business information publishing applications, and traffic navigation applications. LBS location services have become one of the most popular mobile applications. Currently, there are three positioning methods adopted in the 3GPP specifications: a CELL ID-based positioning method, an OTDOA positioning method and an AGPS positioning method. The positioning method based on CELL ID has too low precision, the AGPS positioning method has excellent positioning performance, but the application is hindered by high terminal price and difficulty in completing satellite positioning in severely shielded areas, and the OTDOA positioning method has high positioning precision, can fully utilize network resources, and only makes software modification on a mobile phone, so the OTDOA positioning method is an important development trend of the positioning technology.
In the OTDOA positioning method, the acquisition of the adjacent base station is a difficult point in the industry and is also a key point, and in the related art, the information of the adjacent base station is manually configured, but the method is easy to be configured incorrectly and the later maintenance cost is too high, which reduces the efficiency and affects the positioning accuracy.
Disclosure of Invention
The embodiment of the invention provides a terminal positioning method and device based on OTDOA, which are used for solving the problems of low OTDOA positioning precision and poor efficiency in the prior art.
The embodiment of the invention provides a terminal positioning method based on time difference of arrival (OTDOA), which comprises the following steps:
acquiring information of adjacent base stations of a terminal, wherein the information of the adjacent base stations comprises OTDOA auxiliary data of Positioning Reference Signal (PRS) configuration information of each adjacent base station;
sending the OTDOA assistance data to the terminal to trigger the terminal to measure PRSs of the neighboring base stations;
receiving a measurement report which is sent by the terminal and contains PRS and RSTD of each adjacent base station;
and based on the measurement report, positioning the terminal according to an OTDOA positioning method and sending positioning information to the terminal.
According to some embodiments of the invention, the method further comprises:
before obtaining the information of the adjacent base station of the terminal, receiving the positioning request of the terminal;
sending a capability request to the terminal, and judging whether the terminal has OTDOA and ECID capabilities according to the capability response of the terminal;
when the terminal has OTDOA and ECID capabilities, sending a measurement request to the terminal;
and receiving an auxiliary data request of the terminal.
According to some embodiments of the present invention, the obtaining information of a neighboring base station of the terminal includes:
and determining a plurality of adjacent base stations of the terminal by adopting at least one of an enhanced CELLID uplink positioning method, an enhanced CELLID downlink positioning method and a main CELLID positioning method.
Further, the determining the plurality of neighboring base stations of the terminal includes:
acquiring x adjacent base stations by adopting the enhanced CELLID uplink positioning method;
acquiring y adjacent base stations by adopting the enhanced CELLID downlink positioning method;
acquiring z adjacent base stations by adopting the positioning method according to the main CELLID;
and combining and screening the obtained x + y + z adjacent base stations.
The invention also provides a terminal positioning method based on OTDOA, which comprises the following steps:
receiving OTDOA auxiliary data which is sent by a positioning service system and contains positioning reference signal PRS configuration information of each adjacent base station of a terminal;
measuring PRSs of the respective neighboring base stations based on the OTDOA assistance data;
according to the measured PRS of each adjacent base station, determining the RSTD of each adjacent base station;
sending a measurement report containing PRS and RSTD of each neighboring base station to the positioning service system to assist the positioning service system in positioning the terminal;
and receiving the positioning information sent by the positioning service system.
Further, the method further comprises:
before obtaining OTDOA auxiliary data which is sent by a positioning service system and contains Positioning Reference Signal (PRS) configuration information of each adjacent base station of a terminal, sending a positioning request to the positioning service system;
receiving a capability request sent by the positioning service system, and sending a capability response to the positioning service system;
receiving a measurement request sent by the terminal;
sending an OTDOA assistance data request to the location services system.
The embodiment of the present invention further provides a terminal positioning device based on time difference of arrival OTDOA, including:
the system comprises a neighbor cell acquisition module, a Positioning Reference Signal (PRS) configuration module and a positioning reference signal acquisition module, wherein the neighbor cell acquisition module is used for acquiring information of a neighbor base station of a terminal, and the information of the neighbor base station comprises OTDOA auxiliary data of the Positioning Reference Signal (PRS) configuration information of each neighbor base station;
an auxiliary data sending module, configured to send the OTDOA auxiliary data to the terminal, so as to trigger the terminal to measure PRS (primary reference signal) of each neighboring base station;
a measurement report receiving module, configured to receive a measurement report that includes PRS and RSTD of each neighboring base station and is sent by the terminal;
and the positioning module is used for positioning the terminal according to an OTDOA positioning method and sending positioning information to the terminal based on the measurement report.
According to some embodiments of the invention, the apparatus further comprises:
a positioning request receiving module, configured to receive a positioning request of a terminal before information of a neighboring base station of the terminal is acquired;
the capability request module is used for sending a capability request to the terminal and judging whether the terminal has OTDOA and ECID capabilities or not according to the capability response of the terminal;
a measurement request sending module, configured to send a measurement request to the terminal when the terminal has OTDOA and ECID capabilities;
and the auxiliary data request receiving module is used for receiving an auxiliary data request of the terminal.
According to some embodiments of the present invention, the neighbor cell acquiring module is configured to:
and determining a plurality of adjacent base stations of the terminal by adopting at least one of an enhanced CELLID uplink positioning method, an enhanced CELLID downlink positioning method and a main CELLID positioning method.
In some embodiments of the present invention, the neighbor cell acquiring module is configured to:
acquiring x adjacent base stations by adopting the enhanced CELLID uplink positioning method;
acquiring y adjacent base stations by adopting the enhanced CELLID downlink positioning method;
acquiring z adjacent base stations by adopting the positioning method according to the main CELLID;
and combining and screening the obtained x + y + z adjacent base stations.
The embodiment of the present invention further provides an OTDOA-based terminal positioning device, including:
an auxiliary data receiving module, configured to receive OTDOA auxiliary data that is sent by a positioning service system and includes positioning reference signal PRS configuration information of each neighboring base station of a terminal;
a measuring module, configured to measure PRS of each of the neighboring base stations based on the OTDOA assistance data, and determine RSTD of each of the neighboring base stations according to the measured PRS of each of the neighboring base stations;
a measurement report sending module, configured to send a measurement report including PRS and RSTD of each neighboring base station to the positioning service system, so as to assist the positioning service system in positioning the terminal;
and the positioning information receiving module is used for receiving the positioning information sent by the positioning service system.
Further, the apparatus further includes:
a positioning request sending module, configured to send a positioning request to a positioning service system before obtaining OTDOA auxiliary data sent by the positioning service system and including positioning reference signal PRS configuration information of each neighboring base station of a terminal;
the capability response module is used for receiving a capability request sent by the positioning service system and sending a capability response to the positioning service system;
a measurement request receiving module, configured to receive a measurement request sent by the terminal;
an assistance data request module, configured to send an OTDOA assistance data request to the location service system.
The embodiment of the present invention further provides a location service system, including: a memory, a processor and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method as described above.
An embodiment of the present invention further provides a mobile terminal, including: a memory, a processor and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method as described above.
An embodiment of the present invention further provides a computer-readable storage medium, where an implementation program for information transfer is stored, and when the program is executed by a processor, the method implements the steps of the method described above.
By adopting the embodiment of the invention, the information of the adjacent base station of the terminal is acquired through the positioning service system, the operation is simple and flexible, the efficiency is high, compared with the method for acquiring the information of the adjacent base station through the terminal in the related technology, the work of the terminal can be reduced, the efficiency of the terminal is improved, the additional cost is not required to be increased, the method can be popularized on the basis of the existing network, and the popularization value is high.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
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Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a flow chart of a method for positioning a terminal based on OTDOA according to an embodiment of the present invention;
FIG. 2 is a flowchart of a method for positioning a terminal based on OTDOA according to an embodiment of the present invention;
FIG. 3 is a flowchart of a method for positioning a terminal based on OTDOA according to an embodiment of the present invention;
fig. 4 is a flowchart of a terminal positioning method based on OTDOA in the embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The embodiment of the invention provides a terminal positioning method based on time difference of arrival (OTDOA). The positioning method is suitable for a positioning service system.
The OTDOA calculates the UE position using time differences RSTD of arrival of reference signals of a plurality of base stations at the terminal UE, and base station position information. Specifically, the UE measures at least 2 or more than 2 RSTDs to obtain the distance difference between the UE and each base station, and then obtains the location of the UE by triangulation based on the location of each base station. When the UE measures the RSTD values of two base stations, from a mathematical point of view, the UE's motion trajectory is a hyperbola whose focus is the two base stations and whose distance difference is a fixed difference. To achieve accurate positioning, the same measurement and calculation must be performed on the other two base stations to obtain another hyperbola. The intersection of these two hyperbolas is the location of the UE. Therefore, at least 3 base stations are required to achieve OTDOA positioning.
As shown in fig. 1, the terminal positioning method according to the embodiment of the present invention includes:
s101, obtaining information of adjacent base stations of the terminal, wherein the information of the adjacent base stations comprises OTDOA auxiliary data of Positioning Reference Signal (PRS) configuration information of each adjacent base station.
S102, sending OTDOA auxiliary data to the terminal to trigger the terminal to measure PRS of each adjacent base station;
s103, receiving a measurement report which is sent by a terminal and contains PRS and reference signal time difference RSTD of each adjacent base station;
and S104, positioning the terminal according to the OTDOA positioning method based on the measurement report and sending the positioning information to the terminal.
By adopting the embodiment of the invention, the information of the adjacent base station of the terminal is acquired through the positioning service system, the operation is simple and flexible, the efficiency is high, compared with the method for acquiring the information of the adjacent base station through the terminal in the related technology, the work of the terminal can be reduced, the efficiency of the terminal is improved, the additional cost is not required to be increased, the method can be popularized on the basis of the existing network, and the popularization value is high.
On the basis of the above-described embodiment, various modified embodiments are further proposed, and it is to be noted herein that, in order to make the description brief, only the differences from the above-described embodiment are described in the various modified embodiments.
According to some embodiments of the invention, the method further comprises:
before acquiring the information of the adjacent base station of the terminal, receiving a positioning request of the terminal;
sending a capability request to the terminal, and judging whether the terminal has OTDOA and ECID capabilities according to the capability response of the terminal;
when the terminal has OTDOA and ECID capability, sending a measurement request to the terminal;
and receiving an auxiliary data request of the terminal.
It should be noted that the term "ECID" referred to herein may be understood as an enhanced CELLID positioning method, and the enhanced CELLID positioning method includes a strong CELLID uplink positioning method and an enhanced CELLID downlink positioning method. The positioning method of the embodiment of the invention can be realized only if the terminal has the OTDOA positioning function and the ECID positioning function at the same time.
According to some embodiments of the present invention, acquiring information of a neighbor base station of a terminal may include:
and determining a plurality of adjacent base stations of the terminal by adopting at least one of an enhanced CELLID uplink positioning method, an enhanced CELLID downlink positioning method and a main CELLID positioning method.
It is understood that, in some examples of the present invention, the information of the neighboring base station of the terminal is obtained by only one of three positioning methods, i.e., an enhanced CELLID uplink positioning method, an enhanced CELLID downlink positioning method, and a primary CELLID positioning method. In still other examples of the present invention, it is necessary to acquire information of neighboring base stations of a terminal by any two positioning methods, that is, an enhanced CELLID uplink positioning method, an enhanced CELLID downlink positioning method, and a primary CELLID positioning method. In other examples of the present invention, it is necessary to obtain information of a neighboring base station of a terminal by using three positioning methods, i.e., an enhanced CELLID uplink positioning method, an enhanced CELLID downlink positioning method, and a primary CELLID positioning method. In the actual working process, the mode can be selected according to the actual requirement.
For example, in some embodiments of the present invention, determining a plurality of neighboring base stations of the terminal may include:
acquiring x adjacent base stations by adopting an enhanced CELLID uplink positioning method;
acquiring y adjacent base stations by adopting an enhanced CELLID downlink positioning method;
acquiring z adjacent base stations by adopting a main CELLID positioning method;
and combining and screening the obtained x + y + z adjacent base stations.
Further, for the (x + y + z) adjacent base stations obtained in the above process, a preset number of adjacent base stations are reserved according to the base station combining principle that only one sector is reserved under the same adjacent base station.
It should be noted that, in the above-mentioned "enhanced CELLID uplink positioning method", according to the LPPA protocol defined in the 3GPP specification, the positioning service system is used to send an information acquisition request of the neighboring base station to the base station, and acquire information (including main base station information and optimal neighbor group information) of the neighboring base station from the received information acquisition response of the neighboring base station, where the number of the neighboring base stations is between 0 and 9.
The enhanced CELLID downlink positioning method is that according to an LPP protocol defined by a 3GPP specification, a positioning service system is utilized to send an information acquisition request of adjacent base stations to terminal UE, and information of the adjacent base stations (including main base station information and optimal adjacent area group information) is acquired from received information acquisition responses of the adjacent base stations, wherein the number of the adjacent base stations is between 0 and 32.
The positioning method according to the main CELLID is that according to a base station network topological structure, a certain distance range is found from a main cell corresponding to a main base station, a coverage area estimated according to an antenna opening angle can cover the adjacent cell of the main cell, and a plurality of adjacent base stations are selected according to the distance from near to far.
According to some embodiments of the present invention, in an LTE system, a positioning service system obtains OTDOA assistance data under a neighboring base station from the neighboring base station through an LPPA protocol defined by a 3GPP specification.
The invention also provides a terminal positioning method based on OTDOA. The positioning method is suitable for the terminal. As shown in fig. 2, the positioning method includes:
s201, receiving OTDOA auxiliary data which is sent by a positioning service system and contains positioning reference signal PRS configuration information of each adjacent base station of a terminal;
s202, based on the OTDOA auxiliary data, measuring PRSs of all adjacent base stations;
s203, according to the measured PRS of each adjacent base station, determining the RSTD of each adjacent base station;
s204, sending the measurement report containing the PRS and the RSTD of each adjacent base station to a positioning service system so as to assist the positioning service system in positioning the terminal;
s205, receiving the positioning information sent by the positioning service system.
By adopting the embodiment of the invention, the information of the adjacent base station of the terminal is acquired through the positioning service system, the operation is simple and flexible, the efficiency is high, compared with the method for acquiring the information of the adjacent base station through the terminal in the related technology, the work of the terminal can be reduced, the efficiency of the terminal is improved, the additional cost is not required to be increased, the method can be popularized on the basis of the existing network, and the popularization value is high.
Further, the method further comprises:
before obtaining OTDOA auxiliary data which is sent by a positioning service system and contains Positioning Reference Signal (PRS) configuration information of each adjacent base station of a terminal, sending a positioning request to the positioning service system;
receiving a capacity request sent by a positioning service system, and sending a capacity response to the positioning service system;
a receiving terminal sends a measurement request;
an OTDOA assistance data request is sent to a location services system.
The OTDOA-based terminal positioning method according to an embodiment of the present invention is described in detail in a specific embodiment with reference to fig. 3-4. It is to be understood that the following description is illustrative only and is not intended to be in any way limiting. All similar structures and similar variations thereof adopted by the invention are intended to fall within the scope of the invention.
In one aspect, as shown in fig. 3, an embodiment of the present invention provides an OTDOA-based terminal positioning method applicable to a positioning service system, including:
s301, receiving a positioning request LCSAP Location service request sent by a terminal through a 3GPP protocol LTE access network MME (mobility Management entity).
The location request carries an international Mobile Subscriber identity imsi (international Mobile Subscriber identity number), primary base station information, quality of service parameters qos (quality of service), and the like.
S302, sending a capability request to the terminal.
The capability request is used for determining whether the terminal supports OTDOA and ECID capabilities, and flag bits OTDOA-RequestCapabilites and ECID-RequestCapabilites need to be carried in a RequestCapabilites message.
And S303, receiving the capability response of the terminal.
Whether the terminal supports OTDOA positioning or not can be judged from an OTDOA-Mode field in the capability response message ProvideCapabilities, and whether the terminal supports ECID positioning or not can be judged from an ECID-MeasSupported field in the capability response message Provideabilities.
S304, judging whether the terminal supports OTDOA and ECID capability, if yes, executing step S305, otherwise, ending the process.
S305, determining whether to execute an eciduup (enhanced CELLID uplink positioning method) process, if yes, jumping to step S306, otherwise, jumping to step S308.
S306, execute the eciduup procedure to obtain X neighboring base stations, and combine the X neighboring base stations to obtain X neighboring base stations, and then skip to step S307.
S307, judging whether the number of the acquired adjacent base stations reaches the terminal configuration parameter UENeighborNum, if so, jumping to the step S313, otherwise, jumping to the step S308.
And S308, judging whether to execute an ECIDDN (enhanced CELLID downlink positioning method) flow, if so, jumping to the step S309, otherwise, jumping to the step S311.
S309, execute the ecidn process to obtain Y neighboring bss, merge the Y neighboring bss to obtain Y neighboring bss, and skip to step S310.
S310, judging whether the number of the acquired adjacent base stations reaches the terminal configuration parameter UENeighborNum, if so, jumping to the step 313, otherwise, jumping to the step 311.
And S311, judging whether the main CELLID flow is executed or not, if so, jumping to the step S312, otherwise, jumping to the step S313.
S312, executing the main CELLID procedure, obtaining Z neighboring base stations from the geographical locations of the base stations in the base station table, merging the Z neighboring base stations to obtain Z neighboring base stations, and jumping to step S313.
It should be noted that the above-mentioned combining of the base stations needs to follow the combining principle, that is, only one sector is reserved under the same base station. The retained sector signal strength is maximized and ensures that the combined base stations are non-co-sited.
S313, acquiring OTDOA auxiliary data of positioning reference signal PRS configuration information of x + y + z adjacent base stations by adopting an LPPa protocol.
Where any of x, y, z may be zero. In addition, for the adjacent base station which acquires the auxiliary data, the auxiliary data of the adjacent base station can be cached in a memory so as to provide direct use for next positioning.
And S314, initiating a measurement request to the terminal.
The measurement request carries a quality of service parameter Qos (quality of service) parameter, which includes response time (ResponseTime), horizontal accuracy (horizon accuracy), and the like.
And S315, receiving an auxiliary data request initiated by the terminal aiming at the measurement request.
S316, the packaged assistance data is sent to the terminal, providing terminal measurements.
S317, receives the measurement report transmitted by the terminal.
The measurement report includes positioning Reference signal prs (positioning Reference signal) and Reference signal time difference rstd (Reference signal time difference) parameters of each neighboring base station.
S318, positioning the terminal by adopting an OTDOA positioning method according to the data in the measurement report and sending the positioning information to the terminal through the MME.
On the other hand, as shown in fig. 4, an embodiment of the present invention provides an OTDOA-based terminal positioning method for a terminal, including:
s401, a positioning request is sent to a positioning service system through MME.
The location request carries an international Mobile Subscriber identity imsi (international Mobile Subscriber identity number), primary base station information, quality of service parameters qos (quality of service), and the like.
S402, receiving the capability request sent by the positioning service system, and feeding back a capability response to the positioning service system.
The OTDOA-Mode field in the capability response message ProvideCapabilities can judge whether the terminal supports OTDOA positioning, the ECID-measSupported field in the capability response message ProvideCapabilities can judge whether the terminal supports ECID positioning, and terminal capability information is cached for judgment next time when the terminal performs downlink positioning.
And S403, setting UENeighborNum by the terminal configuration file, wherein the UENeighborNum represents the maximum value of the number of the adjacent base stations which can be obtained by the position of the terminal.
S404, receiving a measurement request sent by the positioning service system.
S405, sending an assistance data request to the location service system.
S406, the auxiliary data sent by the positioning service system is received.
S407, based on the assistance data, measure the PRS and the RSTD of each neighboring base station, and send a measurement report including the PRS and the RSTD of each neighboring base station to the positioning service system.
The terminal measures PRS of the OTDOA measuring cell (each adjacent base station) according to the OTDOA auxiliary data provided by the positioning service system to obtain RSTD of the OTDOA measuring cell, and reports the measuring result to the positioning system through LPP protocol defined by 3GPP specification.
S408, receiving the positioning information sent by the positioning service system through the MME.
Compared with the prior art, the embodiment of the invention can realize the following beneficial effects:
1. the OTDOA positioning in the related art fails OTDOA positioning or has very poor positioning accuracy due to the absence of a suitable neighbor cell (neighbor base station). The method for acquiring the information of the adjacent base station provided by the embodiment of the invention combines the base station measured by ECID, the topological structure of the base station and other methods to acquire the optimal adjacent area near the position of the UE;
2. according to the neighbor cell acquired by the neighbor cell acquisition method in the embodiment of the invention, more neighbor cells can be acquired, the acquired neighbor cells are all base stations of the optimal position near the terminal, the base stations are provided for the terminal to execute OTDOA measurement, RSTD measurement parameters are more accurate compared with a measurement report obtained in the original mode, in addition, the neighbor cell base station information is acquired by using a corresponding algorithm according to configuration parameters, and compared with the manual configuration of the neighbor cell base station, the operation is simpler, more flexible and more accurate, and the efficiency is higher.
3. The method of the embodiment of the invention is used for executing OTDOA positioning, does not need to increase extra cost, can be popularized on the basis of the existing network, and has high popularization value.
It should be noted that the above-mentioned embodiments are merely preferred examples of the present invention, and the present invention is not limited thereto. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
The embodiment of the present invention further provides a terminal positioning device based on time difference of arrival OTDOA, including:
the neighbor cell acquiring module is used for acquiring information of neighbor base stations of the terminal, wherein the information of the neighbor base stations comprises OTDOA auxiliary data of Positioning Reference Signal (PRS) configuration information of each neighbor base station;
the auxiliary data sending module is used for sending OTDOA auxiliary data to the terminal so as to trigger the terminal to measure PRS of each adjacent base station;
a measurement report receiving module, configured to receive a measurement report that includes PRS and RSTD of each neighboring base station and is sent by a terminal;
and the positioning module is used for positioning the terminal according to the OTDOA positioning method based on the measurement report and sending the positioning information to the terminal.
By adopting the embodiment of the invention, the information of the adjacent base station of the terminal is acquired through the positioning service system, the operation is simple and flexible, the efficiency is high, compared with the method for acquiring the information of the adjacent base station through the terminal in the related technology, the work of the terminal can be reduced, the efficiency of the terminal is improved, the additional cost is not required to be increased, the method can be popularized on the basis of the existing network, and the popularization value is high.
On the basis of the above-described embodiment, various modified embodiments are further proposed, and it is to be noted herein that, in order to make the description brief, only the differences from the above-described embodiment are described in the various modified embodiments.
According to some embodiments of the invention, the apparatus further comprises:
a positioning request receiving module, configured to receive a positioning request of a terminal before information of a neighboring base station of the terminal is acquired;
the capability request module is used for sending a capability request to the terminal and judging whether the terminal has OTDOA and ECID capabilities according to the capability response of the terminal;
the measurement request sending module is used for sending a measurement request to the terminal when the terminal has OTDOA and ECID capabilities;
and the auxiliary data request receiving module is used for receiving an auxiliary data request of the terminal.
According to some embodiments of the present invention, the neighbor cell acquiring module is configured to:
and determining a plurality of adjacent base stations of the terminal by adopting at least one of an enhanced CELLID uplink positioning method, an enhanced CELLID downlink positioning method and a main CELLID positioning method.
In some embodiments of the present invention, the neighbor cell acquiring module is configured to:
acquiring x adjacent base stations by adopting an enhanced CELLID uplink positioning method;
acquiring y adjacent base stations by adopting an enhanced CELLID downlink positioning method;
acquiring z adjacent base stations by adopting a main CELLID positioning method;
and combining and screening the obtained x + y + z adjacent base stations.
The embodiment of the present invention further provides an OTDOA-based terminal positioning device, including:
an auxiliary data receiving module, configured to receive OTDOA auxiliary data that is sent by a positioning service system and includes positioning reference signal PRS configuration information of each neighboring base station of a terminal;
and the measuring module is used for measuring the PRS of each adjacent base station based on the OTDOA auxiliary data and determining the RSTD of each adjacent base station according to the measured PRS of each adjacent base station.
A measurement report sending module, configured to send a measurement report including PRS and RSTD of each neighboring base station to a positioning service system, so as to assist the positioning service system in positioning a terminal;
and the positioning information receiving module is used for receiving the positioning information sent by the positioning service system.
By adopting the embodiment of the invention, the information of the adjacent base station of the terminal is acquired through the positioning service system, the operation is simple and flexible, the efficiency is high, compared with the method for acquiring the information of the adjacent base station through the terminal in the related technology, the work of the terminal can be reduced, the efficiency of the terminal is improved, the additional cost is not required to be increased, the method can be popularized on the basis of the existing network, and the popularization value is high.
Further, the apparatus further includes:
a positioning request sending module, configured to send a positioning request to a positioning service system before obtaining OTDOA auxiliary data sent by the positioning service system and including positioning reference signal PRS configuration information of each neighboring base station of a terminal;
the capability response module is used for receiving a capability request sent by the positioning service system and sending a capability response to the positioning service system;
a measurement request receiving module, configured to receive a measurement request sent by a terminal;
and the auxiliary data request module is used for sending an OTDOA auxiliary data request to the positioning service system.
The embodiment of the present invention further provides a location service system, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program when executed by the processor implementing the steps of:
s101, obtaining information of adjacent base stations of the terminal, wherein the information of the adjacent base stations comprises OTDOA auxiliary data of Positioning Reference Signal (PRS) configuration information of each adjacent base station.
S102, sending OTDOA auxiliary data to the terminal to trigger the terminal to measure PRS of each adjacent base station;
s103, receiving a measurement report which is sent by a terminal and contains PRS and reference signal time difference RSTD of each adjacent base station;
and S104, positioning the terminal according to the OTDOA positioning method based on the measurement report and sending the positioning information to the terminal.
By adopting the embodiment of the invention, the information of the adjacent base station of the terminal is acquired through the positioning service system, the operation is simple and flexible, the efficiency is high, compared with the method for acquiring the information of the adjacent base station through the terminal in the related technology, the work of the terminal can be reduced, the efficiency of the terminal is improved, the additional cost is not required to be increased, the method can be popularized on the basis of the existing network, and the popularization value is high.
An embodiment of the present invention further provides a mobile terminal, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program when executed by the processor implementing the steps of:
s201, receiving OTDOA auxiliary data which is sent by a positioning service system and contains positioning reference signal PRS configuration information of each adjacent base station of a terminal;
s202, based on the OTDOA auxiliary data, measuring PRSs of all adjacent base stations;
s203, according to the measured PRS of each adjacent base station, determining the RSTD of each adjacent base station;
s204, sending the measurement report containing the PRS and the RSTD of each adjacent base station to a positioning service system so as to assist the positioning service system in positioning the terminal;
the measurement report may include information of the PRS and RSTD of the primary base station.
S205, receiving the positioning information sent by the positioning service system.
By adopting the embodiment of the invention, the information of the adjacent base station of the terminal is acquired through the positioning service system, the operation is simple and flexible, the efficiency is high, compared with the method for acquiring the information of the adjacent base station through the terminal in the related technology, the work of the terminal can be reduced, the efficiency of the terminal is improved, the additional cost is not required to be increased, the method can be popularized on the basis of the existing network, and the popularization value is high.
The embodiment of the present invention further provides a computer-readable storage medium, where an implementation program for information transfer is stored on the computer-readable storage medium, and when executed by a processor, the implementation program may implement steps S101 to S104 or S201 to S205:
s101, obtaining information of adjacent base stations of the terminal, wherein the information of the adjacent base stations comprises OTDOA auxiliary data of Positioning Reference Signal (PRS) configuration information of each adjacent base station.
S102, sending OTDOA auxiliary data to the terminal to trigger the terminal to measure PRS of each adjacent base station;
s103, receiving a measurement report which is sent by a terminal and contains PRS and reference signal time difference RSTD of each adjacent base station;
and S104, positioning the terminal according to the OTDOA positioning method based on the measurement report and sending the positioning information to the terminal.
S201, receiving OTDOA auxiliary data which is sent by a positioning service system and contains positioning reference signal PRS configuration information of each adjacent base station of a terminal;
s202, based on the OTDOA auxiliary data, measuring PRSs of all adjacent base stations;
s203, according to the measured PRS of each adjacent base station, determining the RSTD of each adjacent base station;
s204, sending the measurement report containing the PRS and the RSTD of each adjacent base station to a positioning service system so as to assist the positioning service system in positioning the terminal;
the measurement report may include information of the PRS and RSTD of the primary base station.
S205, receiving the positioning information sent by the positioning service system.
By adopting the embodiment of the invention, the information of the adjacent base station of the terminal is acquired through the positioning service system, the operation is simple and flexible, the efficiency is high, compared with the method for acquiring the information of the adjacent base station through the terminal in the related technology, the work of the terminal can be reduced, the efficiency of the terminal is improved, the additional cost is not required to be increased, the method can be popularized on the basis of the existing network, and the popularization value is high.
The computer-readable storage medium of this embodiment includes, but is not limited to: ROM, RAM, magnetic or optical disks, and the like.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
It should be noted that in the description of the present specification, reference to the description of the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (15)
1. A terminal positioning method based on time difference of arrival (OTDOA), comprising:
acquiring information of adjacent base stations of a terminal, wherein the information of the adjacent base stations comprises OTDOA auxiliary data of Positioning Reference Signal (PRS) configuration information of each adjacent base station;
sending the OTDOA assistance data to the terminal to trigger the terminal to measure PRSs of the neighboring base stations;
receiving a measurement report which is sent by the terminal and contains PRS and reference signal time difference RSTD of each adjacent base station;
and based on the measurement report, positioning the terminal according to an OTDOA positioning method and sending positioning information to the terminal.
2. The method of claim 1, further comprising:
before obtaining the information of the adjacent base station of the terminal, receiving the positioning request of the terminal;
sending a capability request to the terminal, and judging whether the terminal has OTDOA and ECID capabilities according to the capability response of the terminal;
when the terminal has OTDOA and ECID capabilities, sending a measurement request to the terminal;
and receiving an auxiliary data request of the terminal.
3. The method of claim 1, wherein the obtaining information of the neighbor base stations of the terminal comprises:
and determining a plurality of adjacent base stations of the terminal by adopting at least one of an enhanced CELLID uplink positioning method, an enhanced CELLID downlink positioning method and a main CELLID positioning method.
4. The method of claim 3, wherein the determining the plurality of neighboring base stations for the terminal comprises:
acquiring x adjacent base stations by adopting the enhanced CELLID uplink positioning method;
acquiring y adjacent base stations by adopting the enhanced CELLID downlink positioning method;
acquiring z adjacent base stations by adopting the positioning method according to the main CELLID;
and combining and screening the obtained x + y + z adjacent base stations.
5. A terminal positioning method based on OTDOA is characterized by comprising the following steps:
receiving OTDOA auxiliary data which is sent by a positioning service system and contains positioning reference signal PRS configuration information of each adjacent base station of a terminal;
measuring PRSs of the respective neighboring base stations based on the OTDOA assistance data;
according to the measured PRS of each adjacent base station, determining the RSTD of each adjacent base station;
sending a measurement report containing PRS and RSTD of each neighboring base station to the positioning service system to assist the positioning service system in positioning the terminal;
and receiving the positioning information sent by the positioning service system.
6. The method of claim 5, further comprising:
before obtaining OTDOA auxiliary data which is sent by a positioning service system and contains Positioning Reference Signal (PRS) configuration information of each adjacent base station of a terminal, sending a positioning request to the positioning service system;
receiving a capability request sent by the positioning service system, and sending a capability response to the positioning service system;
receiving a measurement request sent by the terminal;
sending an OTDOA assistance data request to the location services system.
7. A terminal positioning device based on time difference of arrival (OTDOA), comprising:
the system comprises a neighbor cell acquisition module, a Positioning Reference Signal (PRS) configuration module and a positioning reference signal acquisition module, wherein the neighbor cell acquisition module is used for acquiring information of a neighbor base station of a terminal, and the information of the neighbor base station comprises OTDOA auxiliary data of the Positioning Reference Signal (PRS) configuration information of each neighbor base station;
an auxiliary data sending module, configured to send the OTDOA auxiliary data to the terminal, so as to trigger the terminal to measure PRS (primary reference signal) of each neighboring base station;
a measurement report receiving module, configured to receive a measurement report that includes PRS and RSTD of each neighboring base station and is sent by the terminal;
and the positioning module is used for positioning the terminal according to an OTDOA positioning method and sending positioning information to the terminal based on the measurement report.
8. The apparatus of claim 7, wherein the apparatus further comprises:
a positioning request receiving module, configured to receive a positioning request of a terminal before information of a neighboring base station of the terminal is acquired;
the capability request module is used for sending a capability request to the terminal and judging whether the terminal has OTDOA and ECID capabilities or not according to the capability response of the terminal;
a measurement request sending module, configured to send a measurement request to the terminal when the terminal has OTDOA and ECID capabilities;
and the auxiliary data request receiving module is used for receiving an auxiliary data request of the terminal.
9. The apparatus of claim 7, wherein the neighbor acquisition module is configured to:
and determining a plurality of adjacent base stations of the terminal by adopting at least one of an enhanced CELLID uplink positioning method, an enhanced CELLID downlink positioning method and a main CELLID positioning method.
10. The apparatus of claim 9, wherein the neighbor acquisition module is configured to:
acquiring x adjacent base stations by adopting the enhanced CELLID uplink positioning method;
acquiring y adjacent base stations by adopting the enhanced CELLID downlink positioning method;
acquiring z adjacent base stations by adopting the positioning method according to the main CELLID;
and combining and screening the obtained x + y + z adjacent base stations.
11. An OTDOA-based terminal positioning apparatus, comprising:
an auxiliary data receiving module, configured to receive OTDOA auxiliary data that is sent by a positioning service system and includes positioning reference signal PRS configuration information of each neighboring base station of a terminal;
a measuring module, configured to measure PRS of each of the neighboring base stations based on the OTDOA assistance data, and determine RSTD of each of the neighboring base stations according to the measured PRS of each of the neighboring base stations;
a measurement report sending module, configured to send a measurement report including PRS and RSTD of each neighboring base station to the positioning service system, so as to assist the positioning service system in positioning the terminal;
and the positioning information receiving module is used for receiving the positioning information sent by the positioning service system.
12. The apparatus of claim 11, wherein the apparatus further comprises:
a positioning request sending module, configured to send a positioning request to a positioning service system before obtaining OTDOA auxiliary data sent by the positioning service system and including positioning reference signal PRS configuration information of each neighboring base station of a terminal;
the capability response module is used for receiving a capability request sent by the positioning service system and sending a capability response to the positioning service system;
a measurement request receiving module, configured to receive a measurement request sent by the terminal;
an assistance data request module, configured to send an OTDOA assistance data request to the location service system.
13. A location services system, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method according to any one of claims 1 to 4.
14. A mobile terminal, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method according to any one of claims 5-6.
15. A computer-readable storage medium, characterized in that it has stored thereon a program for implementing the transfer of information, which program, when being executed by a processor, is adapted to carry out the steps of the method according to any one of claims 1 to 6.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023050430A1 (en) * | 2021-09-30 | 2023-04-06 | Nokia Shanghai Bell Co., Ltd. | Positioning measurement reporting |
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| CN102457960A (en) * | 2010-11-02 | 2012-05-16 | 大唐移动通信设备有限公司 | Measuring processing method and equipment for auxiliary observation arrival time difference positioning |
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