CN113939013A - Method for acquiring measurement cell in OTDOA, positioning server, terminal and storage medium - Google Patents
Method for acquiring measurement cell in OTDOA, positioning server, terminal and storage medium Download PDFInfo
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Abstract
The embodiment of the invention provides a method for acquiring a measured cell in OTDOA (optical time Domain analysis), a positioning server, a terminal and a storage medium, wherein the positioning server sends a first measurement request to the terminal for cell measurement to acquire first cell information; determining an OTDOA measuring cell corresponding to the terminal according to the first cell information; in some implementation processes, the positioning server selects a corresponding OTDOA measurement cell from the first cell information measured by the terminal, and because the OTDOA measurement cell is the cell selected from the first cell information measured by the terminal, the problem that the terminal cannot perform OTDOA measurement because a signal of the OTDOA measurement cell is not detected does not occur, and the positioning server accurately obtains the OTDOA measurement cell that the terminal can use, thereby avoiding the problem that OTDOA positioning fails because the terminal cannot measure the OTDOA measurement cell issued by the positioning server.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to an acquisition method, a positioning server, a terminal and a storage medium of a measuring cell in OTDOA.
Background
With the forward development of mobile communication networks, mobile terminals have become an indispensable part of human activities, and accordingly, the requirements for positioning mobile terminals are becoming higher and higher. Initially, CELL-ID (CELL identification) location technology based on the serving CELL was used, which, although it has the advantage of fast location, has a very low accuracy. Therefore, in order to obtain higher accuracy, the triangulation technology based on multiple base stations becomes a new trend. However, since the distance between the UE (User terminal) and the base station measured alone is not treated as the same error for all receivers, the error is also larger. A TDOA (Time Difference of Arrival) location method has emerged that can eliminate or reduce the common error at all receivers due to the channel.
The OTDOA (Observed Time Difference of Arrival) is a technique for performing positioning based on the Time Difference between the propagation of signals from 3 base stations and a mobile terminal. In the OTDOA positioning method, the UE position is estimated based on the measurement of downlink Radio signals from a plurality of Evolved Universal Mobile Telecommunications Systems (UMTS) Evolved E-UTRA (Evolved Universal Mobile Telecommunications System) TPs (Transmission Point) at the UE, and the Radio signal propagation time difference TDOA from a plurality of sets of UEs to two base stations is obtained.
In OTDOA positioning, TDOA of a reference cell and a neighboring cell (neighbor cell) belonging to a different base station from the reference cell correspond to a difference in location between the UE and the two cells, so from a mathematical point of view, a possible location of the UE is a hyperbola in which a base station corresponding to the two measurement cells is a focus and a distance difference between the two measurement cells is a fixed difference, and to obtain an actual location of the UE, the same measurement and calculation must be performed on the reference cell and another neighboring cell belonging to a different base station from the reference cell to obtain another hyperbola, so as to obtain an actual location of the UE.
However, in the related art, how to obtain an OTDOA measurement cell that can be used by a terminal in an OTDOA positioning method is not described.
Disclosure of Invention
The method for acquiring the measurement cell in the observed time difference of arrival (OTDOA), the positioning server, the terminal and the storage medium mainly solve the technical problems that in the related technology, the OTDOA measurement cell which can be used by the terminal cannot be accurately acquired in the OTDOA measurement positioning method, and the use obstacle is caused for the OTDOA measurement positioning function.
To solve the foregoing technical problem, an embodiment of the present invention provides an obtaining method for observing a measured cell in an OTDOA, including:
the positioning server sends a first measurement request to the terminal for cell measurement, and first cell information is obtained;
and determining an OTDOA measuring cell corresponding to the terminal according to the first cell information.
The embodiment of the invention also provides an obtaining method for observing a measuring cell in the time difference of arrival (OTDOA), which comprises the following steps:
receiving a first measurement request sent by a positioning server to perform cell measurement, obtaining first cell information, and sending the first cell information to the positioning server;
and receiving the auxiliary data of the OTDOA measuring cell sent by the positioning server, wherein the OTDOA measuring cell is determined by the positioning server according to the first cell information.
The embodiment of the invention also provides a positioning server, which comprises a first processor, a first memory and a first communication bus;
the first communication bus is used for realizing connection communication between the first processor and the first memory;
the first processor is configured to execute one or more computer programs stored in the first memory to implement the steps of the method for obtaining measured cells in observed time difference of arrival, OTDOA, as performed by a positioning server, as described above.
The embodiment of the invention also provides a terminal, which comprises a second processor, a second memory and a second communication bus;
the second communication bus is used for realizing connection communication between the second processor and the second memory;
the second processor is configured to execute one or more computer programs stored in the second memory to implement the steps of the method for obtaining a measured cell in observed time difference of arrival, OTDOA, as described above and executed by a terminal.
Embodiments of the present invention also provide a computer storage medium, which stores one or more programs that are executable by one or more processors to implement the steps of the method for acquiring measured cells in observed time difference of arrival, OTDOA, as performed by a positioning server or the steps of the method for acquiring measured cells in observed time difference of arrival, OTDOA, as performed by a terminal.
According to the method for acquiring the measured cell in the OTDOA, the positioning server, the terminal and the storage medium, the first measurement request is sent to the terminal by the positioning server to measure the cell, and the first cell information is acquired; determining an OTDOA measuring cell corresponding to the terminal according to the first cell information; the positioning server enables the terminal to measure the cell through the measurement request, the terminal determines the cell capable of detecting the cell signal and sends the cell to the positioning server as first cell information, and the positioning server determines the OTDOA measuring cell corresponding to the terminal according to the first cell information. In some implementation processes, the positioning server selects a corresponding OTDOA measurement cell from the first cell information measured by the terminal, and because the OTDOA measurement cell is the cell selected from the first cell information measured by the terminal, the problem that the terminal cannot perform OTDOA measurement because a signal of the OTDOA measurement cell is not detected does not occur, and the positioning server accurately obtains the OTDOA measurement cell that the terminal can use, thereby avoiding the problem that OTDOA positioning fails because the terminal cannot measure the OTDOA measurement cell issued by the positioning server.
Additional features and corresponding advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic basic flowchart of an obtaining method for observing a measured cell in an OTDOA according to a first embodiment of the present invention;
fig. 2 is a schematic diagram of a basic flow of determining an OTDOA measurement cell according to second cell information according to a first embodiment of the present invention;
fig. 3 is a schematic diagram of a basic flow of determining an OTDOA measurement cell according to first cell information, second cell information and third cell information according to a first embodiment of the present invention;
fig. 4 is a schematic basic flowchart of a method for acquiring a measured cell in observed time difference of arrival OTDOA, executed by a terminal side according to a first embodiment of the present invention;
fig. 5 is a schematic basic flowchart of an obtaining method for observing a measured cell in an OTDOA according to a second embodiment of the present invention;
fig. 6 is a schematic diagram of a basic structure of a positioning server according to a third embodiment of the present invention;
fig. 7 is a schematic diagram of a basic structure of a terminal according to a third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
in order to solve the problem in the related art that an OTDOA measurement positioning method cannot accurately acquire an OTDOA measurement cell that a terminal can use, and causes a use obstacle for an OTDOA measurement positioning function, an embodiment of the present invention provides an acquisition method for observing a measurement cell in an OTDOA time difference, please refer to fig. 1, where fig. 1 is a basic flow diagram of an acquisition method for observing a measurement cell in an OTDOA time difference, and the method includes:
s101, a positioning server sends a first measurement request to a terminal for cell measurement to obtain first cell information;
it should be understood that, the location server receives a location request forwarded by an MME (Mobility Management Entity), where the location request may be a location request sent by a terminal UE to the MME and sent by the MME to the location server, or a location request sent by a location application to the MME and sent by the MME to the location server; the Positioning server is an evolved Serving Mobile Location center (E-SMLC) (evolved Serving Mobile Location center), after receiving a Positioning request sent by an MME, the Positioning server sends a terminal capability request of an LTE Positioning Protocol (LPP) (LTE Positioning protocol) to terminal User Equipment (UE), the terminal UE returns a capability response request to the Positioning server, the Positioning server sends the LPP Positioning request to the terminal, and the Positioning server specifies that OTDOA (optical time Domain Autoa) position data needs to be provided; the terminal UE sends an auxiliary data request to the positioning server, and at the moment, the positioning server sends a first measurement request to the terminal to perform cell measurement, so that first cell information is obtained.
In some embodiments, after the positioning server sends the first measurement request to the terminal, the terminal determines a cell capable of detecting a signal according to the first measurement request, and sends cell information capable of detecting a signal to the positioning server according to a determination result, and the positioning server takes the cell information sent by the terminal as first cell information;
s102, determining an OTDOA measuring cell corresponding to the terminal according to the first cell information.
In some embodiments, after receiving the first cell information, the terminal server determines an OTDOA measurement cell corresponding to the terminal according to the first cell information; it should be noted that the OTDOA measurement cell includes an OTDOA reference cell and an OTDOA neighbor cell, where the OTDOA reference cell is a serving cell of the terminal, and the present invention is mainly used to determine the OTDOA neighbor cell of the terminal, that is, select a cell with a high rank from the first cell information as the OTDOA neighbor cell, thereby determining the OTDOA measurement cell.
In some embodiments, determining the OTDOA measurement cell corresponding to the terminal according to the first cell information includes: selecting at least two cells according to the first cell information, taking the selected cells as OTDOA measuring cells and enabling the cells to pass through; optionally, selecting at least two cells according to the first cell information includes: and sequencing the signal intensity of each cell in the first cell information from high to low, and selecting at least two cells with the signal intensity reaching the OTDOA measuring cell standard from high to low according to the sequencing sequence. For example, the positioning server sorts the cells in the first cell information in the order from high to low in cell signal quality, and the positioning server selects at least two cells which are ranked in the first cell information in the order from high to low and meet the OTDOA measurement cell measurement standard as OTDOA measurement cells according to the sorting result, thereby determining the OTDOA measurement cell corresponding to the terminal; it should be understood that at least two OTDOA neighboring cells selected by the positioning server from the first cell information should correspond to at least two different base stations, and if the at least two OTDOA neighboring cells selected from the first cell information cannot correspond to two different base stations, the positioning server determines that the OTDOA measurement cell corresponding to the terminal cannot be determined according to the first cell information; or, if the OTDOA neighbor cell selected by the positioning server from the first cell information is lower than the two cells, it is determined that the OTDOA measurement cell corresponding to the terminal cannot be determined according to the first cell information.
In some embodiments, as shown in fig. 2, when the positioning server cannot determine the OTDOA measurement cell corresponding to the terminal according to the first cell information, the method further includes:
s201, sending a second measurement request to the first base station for enhanced cell ID measurement to obtain second cell information;
it should be understood that the first base station is a base station corresponding to a serving cell of the terminal, when the positioning server cannot obtain the OTDOA neighboring cell according to the first cell information or cannot obtain enough OTDOA neighboring cells, the positioning server sends a second measurement request to the first base station, and the base station returns the second cell information to the positioning server after completing the measurement procedure according to the second measurement request.
S202, determining an OTDOA measuring cell corresponding to the terminal according to the second cell information.
In some embodiments, determining the OTDOA measurement cell corresponding to the terminal according to the second cell information includes: selecting at least two cells according to the second cell information, and taking the selected cells as OTDOA measuring cells; optionally, selecting at least two cells according to the second cell information includes: and sequencing the signal intensity of each cell in the second cell information from high to low, and selecting at least two cells with the signal intensity reaching the OTDOA measuring cell standard from high to low according to the sequencing sequence. For example, the positioning server sorts the cells in the second cell information in the order from high to low according to the cell signal quality, and the positioning server selects at least two cells which are ranked in the first order and meet the OTDOA measurement cell measurement standard from high to low in the second cell information as OTDOA measurement cells according to the sorting result, thereby determining the OTDOA measurement cell corresponding to the terminal; if the at least two OTDOA neighboring cells selected from the second cell information cannot correspond to the two different base stations, the positioning server judges that the OTDOA measuring cell corresponding to the terminal cannot be determined according to the second cell information; or, if the OTDOA neighbor cell selected by the positioning server from the second cell information is lower than the two cells, it is determined that the OTDOA measurement cell corresponding to the terminal cannot be determined according to the second cell information; it should be understood that, in some embodiments, if the positioning server has determined an OTDOA neighboring cell that can be used as an OTDOA measurement cell from the first cell information, then at this time, it is sufficient to determine an OTDOA neighboring cell that can be used as an OTDOA measurement cell according to the second cell information, and at this time, the cell determined by the positioning server according to the first cell information is different from the cell determined according to the second cell information; that is, the positioning server may select at least two OTDOA neighbor cells according to the first cell information and the second cell information, and use the selected OTDOA neighbor cells as OTDOA measurement cells, where the at least two OTDOA neighbor cells selected by the positioning server from the first cell information and the second cell information should correspond to at least two different base stations.
In some embodiments, when the OTDOA measurement cell corresponding to the terminal cannot be determined according to the second cell information, as shown in fig. 3, the method for acquiring a measurement cell in observed time difference of arrival OTDOA further includes:
s301, obtaining third cell information according to the service cell of the terminal and the almanac data of the first base station;
in some embodiments, determining an OTDOA measurement cell corresponding to the terminal according to the first cell information, the second cell information, and the third cell information; the almanac data of the base station, that is, the survey data of the base station, includes, but is not limited to: the ID of each cell of the base station, the longitude and latitude of an antenna, the azimuth direction angle, the coverage range, the hanging of the antenna and other data; it should be understood that, when the positioning server cannot determine the OTDOA measurement cell corresponding to the terminal according to the second cell information and/or the first cell information, at this time, the positioning server obtains the third cell information according to the cell identifier of the current serving cell of the terminal and the almanac data of the first base station, where the almanac data of the first base station may be stored in the positioning server, or may be obtained from the first base station when the positioning server needs the almanac data of the first base station, which is not limited in this embodiment;
s302, determining an OTDOA measuring cell corresponding to the terminal according to the first cell information, the second cell information and the third cell information;
in some embodiments, the positioning server determines, according to the first cell information, the second cell information, and the third cell information, an OTDOA measurement cell corresponding to the terminal, where it is to be understood that the determined OTDOA measurement cell at least includes two at least OTDOA neighbor cells, and should correspond to at least two different base stations; optionally, selecting at least two cells according to the first cell information, the second cell information, and the third cell information includes: and sequencing the signal intensity of each cell in the first cell information, the second cell information and the third cell information from high to low, and selecting at least two cells with the signal intensity reaching the OTDOA measuring cell standard from high to low according to the sequencing sequence. For example, the positioning server sorts the cells in the first cell information, the second cell information, and the third cell information in order of high cell signal quality, and the positioning server selects at least two cells that are ranked first and meet the OTDOA measurement cell measurement standard as OTDOA measurement cells from the first cell information, the second cell information, and the third cell information in order of high cell signal quality to low cell signal quality according to the sorting result, thereby determining the OTDOA measurement cell corresponding to the terminal.
In some embodiments, after determining the OTDOA measurement cell corresponding to the good terminal, the positioning server further sends the auxiliary data of the corresponding OTDOA measurement cell to the terminal, so that the terminal can perform OTDOA measurement positioning according to the auxiliary data.
In some embodiments, there is further provided an obtaining method of a measured cell in observed time difference of arrival OTDOA, performed by a terminal side, as shown in fig. 4, where the method includes:
s401, receiving a first measurement request sent by a positioning server to measure a cell, obtaining first cell information, and sending the first cell information to the positioning server;
in some embodiments, the terminal performs cell measurement according to a first measurement request sent by a positioning server, obtains first cell information, and sends the first cell information to the positioning server;
s402, receiving the auxiliary data of the OTDOA measuring cell sent by the positioning server, wherein the OTDOA measuring cell is determined by the positioning server according to the first cell information.
In some embodiments, the positioning server determines an OTDOA measurement cell according to the first cell information, and sends the auxiliary data of the OTDOA measurement cell to the terminal, and the terminal receives the auxiliary data of the OTDOA measurement cell sent by the positioning server and performs OTDOA measurement positioning according to the auxiliary data; it should be understood that, in some embodiments, the positioning server may not determine the OTDOA measurement cell according to the first cell information, and then the positioning server may determine the OTDOA measurement cell information according to the first cell information and/or the second cell information and/or the third cell information, and send the auxiliary data of the corresponding OTDOA measurement cell to the terminal, and the terminal receives the auxiliary data of the OTDOA measurement cell sent by the positioning server, and performs OTDOA measurement positioning according to the auxiliary data; how the positioning server determines the OTDOA measured cell information according to the first cell information and/or the second cell information and/or the third cell information please refer to the method for acquiring the measured cell in observed time difference of arrival OTDOA executed by the positioning server side, which is not described herein again;
the method for acquiring the measured cell in the observed time difference of arrival OTDOA provided by the embodiment of the invention comprises the steps of sending a first measurement request to a terminal through a positioning server for cell measurement to acquire first cell information; determining an OTDOA measuring cell corresponding to the terminal according to the first cell information; the positioning server selects a corresponding OTDOA measuring cell from the first cell information measured by the terminal, and the OTDOA measuring cell is the cell selected from the first cell information measured by the terminal, so that the problem that the terminal cannot perform OTDOA measurement due to the fact that the terminal cannot detect the signal of the OTDOA measuring cell is avoided, the positioning server accurately obtains the OTDOA measuring cell which can be used by the terminal, and the problem that the OTDOA positioning fails due to the fact that the terminal cannot measure the OTDOA measuring cell issued by the positioning server is avoided; meanwhile, in some embodiments, when the terminal side cannot obtain the neighbor cell information, the OTDOA neighbor cell information is obtained through the base station side, so that the problem that in the related art, the OTDOA measurement cell that the terminal can use cannot be accurately obtained in the OTDOA measurement positioning method, and the use obstacle is caused for the OTDOA measurement positioning function is solved.
Example two:
for better understanding of the present invention, this embodiment provides a more specific example to describe the method for obtaining a measured cell in observed time difference of arrival OTDOA, as shown in fig. 5, where the method includes:
s501, a positioning server sends a first measurement request to a terminal for cell measurement to obtain first cell information;
in some embodiments, the location server sends an LPP RequestLocationInformation location protocol message as a first measurement request to the terminal, where the message carries an ecid-RequestLocationInformation parameter; the terminal completes E-CID (Enhanced Cell-ID) measurement according to the message sent by the positioning server, and then returns an LPP ProvideLocationInformation message as first Cell information, wherein the first Cell information includes but is not limited to: cell global identity and RSRP (Reference Signal Receiving Power) of the serving cell and the neighbor cell;
s502, judging whether the first cell information can determine an OTDOA measuring cell; if not, the process proceeds to S503, and if so, the process proceeds to S507.
In some embodiments, the positioning server determines the OTDOA measurement cell according to the returned first cell information, and when the positioning server can determine a sufficient OTDOA neighbor cell according to the returned first cell information, it determines that the OTDOA measurement cell can be determined according to the first cell information, wherein the sufficient OTDOA neighbor cell includes cells of at least two different base stations; and when the positioning server can not determine enough OTDOA adjacent cells according to the returned first cell information, judging that the OTDOA measuring cells can not be determined according to the first cell information.
S503, the positioning server sends a second measurement request to the first base station for enhanced cell ID measurement, and second cell information is obtained;
in some embodiments, the location server sends an LPPa (LTE Positioning Protocol attachment) E-CID MEASUREMENT INITIATION REQUEST message as a second MEASUREMENT REQUEST to the first base station, where the message carries MEASUREMENT arguments Item parameters including a cell-ID (cell-ID), a Timing Advance (Timing Advance Type 1), a Timing Advance (Timing Advance Type 2), and an RSRP; the first base station completes the uplink E-CID measuring process according to the parameters and returns LPPa E-CID MEASUREMENT INITIATION RESPONSE to the server as second cell information; the second cell information includes an identifier of a neighboring cell (PCI physical cell identifier or cell global identifier of ECGI evolution) and Timing Advance Type 1, Timing Advance Type 2, and RSRP of the neighboring cell.
S504, judging whether the first cell information and the second cell information can determine an OTDOA measuring cell; if not, go to S505, if so, go to S507.
In some embodiments, the positioning server determines an OTDOA measurement cell according to the first cell information and the second cell information, and when the positioning server can determine a sufficient OTDOA neighbor cell according to the returned second cell information and the first cell information, it determines that the OTDOA measurement cell can be determined according to the second cell information, where the sufficient OTDOA neighbor cell includes cells of at least two different base stations; and when the positioning server can not determine enough OTDOA adjacent cells according to the returned first cell information and the second cell information, judging that the OTDOA measuring cells can not be determined according to the first cell information and the second cell information.
S505, obtaining third cell information according to the service cell of the terminal and the almanac data of the first base station;
in some embodiments, when the positioning server does not determine the OTDOA measurement cell from the first cell information and the second cell information, the positioning server calculates third cell information in combination with the current serving cell identifier of the terminal and locally stored base station almanac data;
s506, determining an OTDOA measuring cell corresponding to the terminal according to the first cell information, the second cell information and the third cell information;
in some embodiments, the positioning server determines neighbor cell information according to the first cell information, the second cell information and the third cell information, then removes repeated neighbor cells and co-sited cells, and then generates a neighbor cell list after performing optimization according to Timing Advance Type 1, Timing Advance Type 2 and RSRP measurement values of each neighbor cell, thereby determining an OTDOA measurement cell;
s507, the positioning server sends the auxiliary data of the OTDOA measuring cell to the terminal;
in some embodiments, the positioning server sends the assistance data of the determined OTDOA measurement cell to the terminal, and the terminal performs OTDOA positioning measurement according to the assistance data.
The method for acquiring the measurement cell in the observed time difference of arrival OTDOA provided by the embodiment of the invention solves the problems that in the related technology, the OTDOA measurement cell which can be used by a terminal cannot be accurately acquired in an OTDOA measurement positioning method, and the use obstacle is caused to the OTDOA measurement positioning function.
Example three:
the present embodiment further provides a positioning server, as shown in fig. 6, which includes a first processor 601, a first memory 602, and a first communication bus 603, where:
the first communication bus 603 is used for realizing connection communication between the first processor 601 and the first memory 602;
the first processor 601 is configured to execute one or more computer programs stored in the first memory 602 to implement at least one step of the acquisition method of the measured cell in observed time difference of arrival OTDOA performed by the positioning server in the first and second embodiments.
The present embodiment further provides a terminal, as shown in fig. 7, which includes a second processor 701, a second memory 702, and a second communication bus 703, where:
the second communication bus 703 is used for realizing connection communication between the second processor 701 and the second memory 702;
the second processor 701 is configured to execute one or more computer programs stored in the second memory 702 to implement at least one step of the method for acquiring a measurement cell in observed time difference of arrival OTDOA performed by a terminal in the first and second embodiments described above.
The present embodiments also provide a computer-readable storage medium including volatile or non-volatile, removable or non-removable media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, computer program modules or other data. Computer-readable storage media include, but are not limited to, RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash Memory or other Memory technology, CD-ROM (Compact disk Read-Only Memory), Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer.
The computer readable storage medium in this embodiment may be used to store one or more computer programs, and the one or more computer programs stored therein may be executed by a processor to implement at least one step of the method for acquiring a measurement cell in observed time difference of arrival, OTDOA, performed by a positioning server or at least one step of the method for acquiring a measurement cell in observed time difference of arrival, OTDOA, performed by a terminal in the above-mentioned first and second embodiments.
It will be apparent to those skilled in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software (which may be implemented in computer program code executable by a computing device), firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit.
In addition, communication media typically embodies computer readable instructions, data structures, computer program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to one of ordinary skill in the art. Thus, the present invention is not limited to any specific combination of hardware and software.
The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (11)
1. An acquisition method for observing a measurement cell in time difference of arrival (OTDOA), comprising:
the positioning server sends a first measurement request to the terminal for cell measurement, and first cell information is obtained;
and determining an OTDOA measuring cell corresponding to the terminal according to the first cell information.
2. The method of claim 1, wherein the determining the OTDOA measurement cell corresponding to the terminal according to the first cell information comprises:
and selecting at least two cells according to the first cell information, and taking the selected cells as the OTDOA measuring cells.
3. The method of claim 1, wherein the selecting at least two cells based on the first cell information comprises:
and sequencing the signal intensity of each cell in the first message information from high to low, and selecting at least two cells with the signal intensity reaching the OTDOA measuring cell standard according to the sequencing sequence from high to low.
4. The method of claim 3, wherein when the OTDOA measurement cell corresponding to the terminal cannot be determined according to the first cell information, the method further comprises:
sending a second measurement request to a first base station for enhanced cell ID measurement to obtain second cell information, wherein the first base station is a base station corresponding to a service cell of the terminal;
and determining an OTDOA measuring cell corresponding to the terminal according to the second cell information.
5. The method of claim 4, wherein the determining the OTDOA measurement cell corresponding to the terminal according to the second cell information comprises:
and selecting at least two cells according to the second cell information, and taking the selected cells as the OTDOA measuring cells.
6. The method of claim 5, wherein when the OTDOA measurement cell corresponding to the terminal cannot be determined according to the second cell information, the method further comprises:
obtaining third cell information according to the service cell of the terminal and the almanac data of the first base station;
and determining an OTDOA measuring cell corresponding to the terminal according to the first cell information, the second cell information and the third cell information.
7. The method of claim 6, wherein the method further comprises:
and sending the auxiliary data of the OTDOA measuring cell to the terminal.
8. An acquisition method for observing a measurement cell in time difference of arrival (OTDOA), comprising:
receiving a first measurement request sent by a positioning server to perform cell measurement, obtaining first cell information, and sending the first cell information to the positioning server;
and receiving the auxiliary data of the OTDOA measuring cell sent by the positioning server, wherein the OTDOA measuring cell is determined by the positioning server according to the first cell information.
9. A positioning server comprising a first processor, a first memory, and a first communication bus;
the first communication bus is used for realizing connection communication between the first processor and the first memory;
the first processor is configured to execute one or more computer programs stored in the first memory to implement the steps of the method of acquisition of measurement cells in observed time difference of arrival, OTDOA, according to any of claims 1 to 7.
10. A terminal comprising a second processor, a second memory, and a second communication bus;
the second communication bus is used for realizing connection communication between the second processor and the second memory;
the second processor is configured to execute one or more computer programs stored in the second memory to implement the steps of the method for obtaining a measurement cell in observed time difference of arrival, OTDOA, of claim 8.
11. A storage medium storing one or more computer programs, which are executable by one or more processors to perform the steps of the method for obtaining measurement cells in observed time difference of arrival, OTDOA, according to any one of claims 1 to 6, or the method for obtaining measurement cells in observed time difference of arrival, OTDOA, according to claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010611586.0A CN113939013A (en) | 2020-06-29 | 2020-06-29 | Method for acquiring measurement cell in OTDOA, positioning server, terminal and storage medium |
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