CN114980310A - Direction finding method, direction finding device, electronic equipment and computer readable storage medium - Google Patents
Direction finding method, direction finding device, electronic equipment and computer readable storage medium Download PDFInfo
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- H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
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Abstract
The embodiment of the application provides a direction finding method, a direction finding device, electronic equipment and a computer readable storage medium, wherein the method comprises the following steps: the method comprises the following steps: sending a PDCCH Order instruction at intervals of preset time so as to enable a terminal to initiate a non-competitive random access request, wherein the random access request comprises: MSG1 request; step two: acquiring a time advance and a received signal strength indicating value corresponding to the MSG1 request, and determining a target direction and a distance of the terminal according to the time advance and the received signal strength indicating value; step three: moving towards the target direction; step four: and repeating the steps until the terminal is reached. By implementing the embodiment, the interaction with the terminal in the positioning process can be reduced, the system pressure is reduced, and accurate positioning is realized.
Description
Technical Field
The present application relates to the field of positioning technologies, and in particular, to a direction finding method, an apparatus, an electronic device, and a computer-readable storage medium.
Background
In recent years, with the rapid development of wireless communication technology, security assurance based on wireless communication systems, and devices for fighting crimes have come into existence, and the devices for terminal ranging and direction finding in the prior art can be generally divided into active devices and passive devices,
the active equipment has the working principle that a strong cell signal is emitted outwards, so that a target terminal is switched to a cell controlled by the active equipment, the target terminal is determined to be in the emission range of the active equipment, the distance and the direction of the target terminal are continuously acquired through continuous interaction with the target terminal, and finally the accurate position of the target terminal is acquired. The active devices are generally divided into different network systems and different frequency point attributes, and can initiate ranging and direction finding of target terminals in different network environments.
An active device transmits a high-power cell signal, and a terminal under the coverage of the device initiates Random Access to the device, which causes a large data combing amount of a Physical Random Access Channel (PRACH) of the device and a large system pressure. The device needs to perform slot-level uninterrupted scheduling and Physical Uplink Shared CHannel (PUSCH) processing on the target terminal, which may make the system processing pressure large. The equipment needs to be separately configured with a field intensity individual soldier, and the system design is complex. The field intensity signal of a fixed frequency domain is measured by a field intensity individual soldier, and is easily interfered by a PUSCH (physical uplink shared channel) sent by a peripheral public network terminal, so that errors are easily caused. The distance from the target terminal is not easily reflected intuitively through the field intensity signal of the PUSCH measured by a field intensity individual soldier.
Disclosure of Invention
An object of the embodiments of the present application is to provide a direction finding method, an apparatus, an electronic device, and a computer-readable storage medium, which can reduce interaction with a terminal in a positioning process, reduce system pressure, and implement accurate positioning.
In a first aspect, an embodiment of the present application provides a direction finding method, including:
the method comprises the following steps: sending a PDCCH Order instruction at intervals of preset time so as to enable a terminal to initiate a non-competitive random access request, wherein the random access request comprises: MSG1 request;
step two: acquiring a time advance and a received signal strength indicating value corresponding to the MSG1 request, and determining the target direction of the terminal according to the time advance and the received signal strength indicating value;
step three: moving to the target direction;
step four: and repeating the steps until the terminal is reached.
In the implementation process, the positioning is not completed through the uninterrupted scheduling process of each time slot, but the PDCCH Order is sent at preset time intervals, so that the terminal initiates a non-competitive random access request, the operating pressure of the system can be greatly reduced, and the stability of the system is facilitated. The filtering operation can be directly carried out in the physical layer, only the non-competitive random access of the target terminal is processed, and the processing pressure of the upper layer is reduced. The physical layer only detects the time lead of the PRACH aiming at the target terminal and the intensity indicated value of the received signal, compared with the field intensity of a PUSCH (physical uplink shared channel) which is used for detecting the fixed time-frequency position of an air interface by a single soldier, the physical layer is less influenced by the public network environment, has small error and is more accurate in measurement; the direction of the terminal can be determined only by measuring the corresponding time advance and the received signal strength indication value requested by the MSG1, and the terminal can be finally positioned through multiple executions.
Further, the step of acquiring the time advance and the received signal strength indication value corresponding to the MSG1 request, and determining the target direction of the terminal according to the time advance and the received signal strength indication value includes:
acquiring a corresponding time advance and a received signal strength indication value requested by the MSG1 in multiple directions;
and determining the target direction of the terminal according to the corresponding time advance and the received signal strength indication value requested by the MSG1 in the multiple directions.
In the implementation process, the corresponding time advance and the corresponding received signal strength indication value requested by the MSG1 in multiple directions are obtained, so that the target direction of the terminal can be determined according to the corresponding time advance and the corresponding received signal strength indication value requested by the MSG1 in multiple directions. Based on the above embodiments, the target direction of the terminal can be determined.
Further, the step of determining the target direction of the terminal according to the corresponding timing advance and the received signal strength indication value requested by the MSG1 in the multiple directions includes:
adding the time advance and the received signal strength indicating value in each direction to obtain a composite value;
and determining the target direction according to the composite value.
In the implementation process, the time advance and the received signal strength indicating value are added to obtain a composite value, the time advance can be used for indicating the distance of the terminal, and the received signal strength indicating value is used for indicating the direction of the terminal.
Further, the time advance and the received signal strength indication value in each direction are added to obtain a composite value TA value ＝(TA max -TA) × 100, further comprising:
normalizing the timing advance according to the following equation:
TA value ＝(TA max -TA)*100，
wherein, the TA va l ue For the normalized timing advance, TA is the timing advance, TA max Is 10.
In the implementation process, a method for standardizing the maximum time increment is provided, and the time advance is standardized, so that the positioning precision can be improved.
Further, before the step of adding the timing advance value and the received signal strength indication value in each direction to obtain a composite value, the method further includes:
normalizing the received signal strength indication value according to the following formula:
wherein the RSSI Q For the normalized received signal strength indicator value, RSSI O Is the received signal strength indicator value.
In the implementation process, a method for standardizing the received signal strength indicated value is provided, and the received signal strength indicated value is standardized, so that the direction of the terminal can be accurately acquired.
Further, the step of determining the target direction from the composite value comprises:
and determining the direction corresponding to the maximum composite value in the plurality of directions as the target direction.
Further, the step of adding the timing advance and the received signal strength indication value in each direction to obtain a composite value includes:
multiplying the time lead by a corresponding weight value to obtain a weight time lead;
multiplying the received signal strength indicated value by a corresponding weight value to obtain a weight received signal strength indicated value;
and adding the weight time advance and the weight received signal strength indicating value to obtain the composite value.
In the implementation process, considering that the degrees of influence of the timing advance and the received signal strength indication value on the position of the terminal in the positioning process are different, the received strength indication value and the timing advance are added with corresponding weight values before being added.
In a second aspect, an embodiment of the present application provides a positioning apparatus, including:
a sending module, configured to send a PDCCH Order every preset time, so that a terminal initiates a non-contention random access request, where the random access request includes: MSG1 request;
a direction determining module, configured to obtain a timing advance and a received signal strength indicating value corresponding to the MSG1 request, and determine a target direction of the terminal according to the timing advance and the received signal strength indicating value;
a moving module moving to the target direction;
and the positioning module is used for enabling the sending module, the direction determining module and the positioning module to work repeatedly until the terminal is reached.
In the implementation process, the positioning is not completed through the uninterrupted scheduling process of each time slot, but the PDCCH Order is sent at preset time intervals, so that the terminal initiates a non-competitive random access request, the operating pressure of the system can be greatly reduced, and the stability of the system is facilitated. The filtering operation can be directly carried out in the physical layer, only the non-competitive random access of the target terminal is processed, and the processing pressure of the upper layer is reduced. The physical layer only detects the time lead of the PRACH channel aiming at the target terminal and the received signal strength indicated value, compared with the field strength for detecting the PUSCH field strength of the air interface fixed time frequency position by a single soldier, the physical layer is slightly influenced by the public network environment, has small error and is more accurate in measurement; the direction of the terminal can be determined only by measuring the corresponding time advance and the received signal strength indication value requested by the MSG1, and the terminal can be finally positioned through multiple executions.
In a third aspect, an electronic device provided in an embodiment of the present application includes: memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method according to any of the first aspect when executing the computer program.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having instructions stored thereon, which, when executed on a computer, cause the computer to perform the method according to any one of the first aspect.
Additional features and advantages of the disclosure will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the above-described techniques.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic flow chart of a direction finding method provided in an embodiment of the present application;
fig. 2 is a schematic working diagram of a terminal and a positioning device provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of a positioning device according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not construed as indicating or implying relative importance.
Example 1
Referring to fig. 1, an embodiment of the present application provides a direction finding method, which is applied to a direction finding device, and the method includes:
s1: sending a PDCCH Order instruction at intervals of preset time so as to enable a terminal to initiate a non-competitive random access request, wherein the random access request comprises: MSG1 request;
s2: acquiring a time advance and a received signal strength indicating value corresponding to the MSG1 request, and determining the target direction of the terminal according to the time advance and the received signal strength indicating value;
s3: moving towards the target direction;
the preset distance of each movement can be 50 meters, 100 meters and the like, and the movement distance is not specifically limited in the application.
S4: repeating S1-S3 until the terminal is reached.
In the above embodiment, the terminal sends MSG1, that is, a process of sending a Preamble, where the Preamble is sent on a PRACH channel.
In the implementation process, the positioning is not completed through the uninterrupted scheduling process of each time slot, but the PDCCH Order is sent at preset time intervals, so that the terminal initiates a non-competitive random access request, the operating pressure of the system can be greatly reduced, and the stability of the system is facilitated. The filtering operation can be directly carried out in the physical layer, only the non-competitive random access of the target terminal is processed, and the processing pressure of the upper layer is reduced. The physical layer only detects the time lead of the PRACH channel aiming at the target terminal and the received signal strength indicated value, compared with the field strength for detecting the PUSCH field strength of the air interface fixed time frequency position by a single soldier, the physical layer is slightly influenced by the public network environment, has small error and is more accurate in measurement; the direction of the terminal can be determined only by measuring the corresponding time advance and the received signal strength indication value requested by the MSG1, and the terminal can be finally positioned through multiple executions.
In one possible implementation, the distance of the terminal may be obtained by a timing advance.
Prior to S1, comprising: and triggering the reselection process of the terminal by transmitting a high-power cell broadcast signal. And receiving msg1-msg5 requests sent by the terminal so that the terminal can reside in the cell and randomly initiate a registration request. And inquiring and obtaining the identity of the terminal through the terminal identity information, and judging whether the terminal is a target positioning terminal. If the target positioning terminal is not the target positioning terminal, the base station sends a Register project message and RRC Release signaling to the terminal and releases the terminal.
S1 includes: allocating non-contention preambles for the terminal, and notifying the terminal through the PDCCH Order so that the terminal initiates a non-contention-based Random Access flow to the base station by using the Random Access preambles allocated by the base station; receiving a Random Access Preamble (MSG1), and recording the measured time advance and a received signal strength indicating value; and sending Random Access Response to the terminal.
Whether the terminal is the target positioning terminal can be identified through the Random Access Preamble index in the Random Access Preamble.
In a possible implementation manner, in order to ensure that the terminal sends the request with the maximum power, and ensure that the number of times that the terminal transmits the Preamble does not exceed the protocol field Preamble TransMax, the base station sends Random Access Response to the terminal when the deviation of the Random Access receiving power based on non-contention does not exceed 2dB continuously twice.
In one possible implementation, the average of the received signal strength indicator values requested by the MSG1 is taken as one measurement every 1S.
In one possible implementation, a screening condition is established, multiple MSG1 requests are received, MSG1 requests meeting the screening condition are requested, and the timing advance and the rssi value are obtained according to one or more MSG1 requests meeting the screening condition.
In a possible implementation manner, the step of obtaining the time advance and the received signal strength indication value corresponding to the MSG1 request, and determining the target direction of the terminal according to the time advance and the received signal strength indication value includes:
acquiring corresponding time advance and received signal strength indication values requested by the MSG1 in multiple directions;
and determining the target direction of the terminal according to the corresponding time advance and the received signal strength indication value requested by the MSG1 in the multiple directions.
In the implementation process, the corresponding time advance and the corresponding received signal strength indication value requested by the MSG1 in multiple directions are obtained, so that the target direction of the terminal can be determined according to the corresponding time advance and the corresponding received signal strength indication value requested by the MSG1 in multiple directions. Based on the above embodiments, the target direction of the terminal can be determined.
In one possible implementation, the step of determining the target direction of the terminal according to the corresponding timing advance and the received signal strength indication value requested by the MSG1 in multiple directions includes:
adding the time advance and the received signal strength indicating value in each direction to obtain a composite value;
and determining the target direction according to the composite value.
In the implementation process, the time advance and the received signal strength indicating value are added to obtain a composite value, the time advance can be used for indicating the distance of the terminal, and the received signal strength indicating value is used for indicating the direction of the terminal.
In one possible implementation, the timing advance and the received signal strength indication value in each direction are added to obtain a composite value TA value ＝(TA max -TA) × 100, further comprising:
the timing advance is normalized according to the following equation:
TA value ＝(TA max -TA)*100，
wherein, TA value For normalized timing advance, TA is the timing advance, TA max Is 10.
In the implementation process, a method for standardizing the maximum time increment is provided, and the time advance is standardized, so that the positioning precision can be improved.
In a possible implementation, before the step of adding the timing advance value and the received signal strength indication value in each direction to obtain the composite value, the method further includes:
normalizing the received signal strength indicator value according to the following formula:
wherein the RSSI Q For normalized received signal strength indicator value, RSSI O Is a received signal strength indicator value.
In the implementation process, a method for standardizing the received signal strength indicated value is provided, and the received signal strength indicated value is standardized, so that the direction of the terminal can be accurately acquired.
In one possible implementation, the distance of the terminal from the device may be determined according to the normalized timing advance.
In a possible embodiment, the step of determining the target direction from the composite value comprises:
and confirming the direction corresponding to the maximum composite value in the plurality of directions as the target direction.
For example, referring to fig. 2, the original state target terminal is located at the point a, the device is located at the point C, the distance between the two is 60m, the value of the time advance is 1 at this time, the time advance 900 after T normalization, and when the antenna is in the 1 direction (forward direction), and the received signal strength indication value 65 is obtained, the composite value 965 is obtained; when the antenna is in the 2 direction (reverse direction), the received signal strength indication value is 46, the composite value 946 is obtained, when the antenna is in the 3 and 4 directions, the composite values are smaller than those in the first direction, it can be determined that the direction 1 is the direction in which the terminal is located, the terminal is moved to the point B, the time advance is 0, the normalized time advance is 1000, and the point B can be determined to be the direction in which the terminal is located by the test operation of the point C, for example, and the terminal can be reached step by repeating the above operations.
In one possible implementation, the step of adding the timing advance and the received signal strength indication value in each direction to obtain a composite value includes:
multiplying the time lead by a corresponding weight value to obtain a weight time lead;
multiplying the received signal strength indicated value by a corresponding weight value to obtain a weight received signal strength indicated value;
and adding the weight time advance and the weight received signal strength indicating value to obtain a composite value.
In the implementation process, considering that the degrees of influence of the timing advance and the received signal strength indication value on the position of the terminal in the positioning process are different, the received strength indication value and the timing advance are added with corresponding weight values before being added.
Example 2
Referring to fig. 3, an embodiment of the present application provides a positioning apparatus, including:
a sending module 1, configured to send a PDCCH Order every preset time, so that a terminal initiates a non-contention random access request, where the random access request includes: an MSG1 request;
the direction determining module 2 is configured to obtain a time advance and a received signal strength indicating value corresponding to the MSG1 request, and determine a target direction of the terminal according to the time advance and the received signal strength indicating value;
a moving module 3 moving to a target direction;
and the positioning module 4 is used for enabling the sending module, the direction determining module and the positioning module to work repeatedly until the terminal is reached.
In the implementation process, the positioning is not completed through the uninterrupted scheduling process of each time slot, but the PDCCH Order is sent at preset time intervals, so that the terminal initiates a non-competitive random access request, the operating pressure of the system can be greatly reduced, and the stability of the system is facilitated. The filtering operation can be directly carried out on the physical layer, only the non-competitive random access of the target terminal is processed, and the processing pressure of the upper layer is reduced. The physical layer only detects the time lead of the PRACH channel aiming at the target terminal and the received signal strength indicated value, compared with the field strength for detecting the PUSCH field strength of the air interface fixed time frequency position by a single soldier, the physical layer is slightly influenced by the public network environment, has small error and is more accurate in measurement; the direction of the terminal can be determined only by measuring the corresponding time advance and the received signal strength indication value requested by the MSG1, and the terminal can be finally positioned through multiple executions. In a possible implementation, the direction determining module 2 is further configured to obtain corresponding timing advance and received signal strength indication values requested by the MSG1 in multiple directions;
and determining the target direction of the terminal according to the corresponding time advance and the received signal strength indication value requested by the MSG1 in the multiple directions.
In a possible implementation, the direction determining module 2 is further configured to add the timing advance and the received signal strength indication value in each direction to obtain a composite value; and determining the target direction according to the composite value.
In a possible embodiment, the apparatus further comprises a normalization module for normalizing the timing advance according to the following formula:
TA value ＝(TA max -TA)*100，
wherein, TA value For normalized timing advance, TA is the timing advance, TA max Is 10.
In one possible embodiment, the normalization module is further configured to normalize the received signal strength indicator value according to the following formula:
wherein the RSSI Q For normalized received signal strength indicator value, RSSI O Is a received signal strength indicator value.
In a possible embodiment, the target direction determining module 2 is further configured to determine a direction corresponding to the maximum composite value among the plurality of directions as the target direction.
In a possible implementation manner, the target direction determining module 2 is further configured to multiply the time advance by a weight value corresponding to the time advance to obtain a weight time advance;
multiplying the received signal strength indicated value by a corresponding weighted value to obtain a weighted received signal strength indicated value;
and adding the weight time advance and the weight received signal strength indicating value to obtain a composite value.
Fig. 4 shows a block diagram of an electronic device according to an embodiment of the present disclosure, where fig. 4 is a block diagram of the electronic device. The electronic device may include a processor 41, a communication interface 42, storage 43, and at least one communication bus 44. Wherein the communication bus 44 is used for realizing direct connection communication of these components. In the embodiment of the present application, the communication interface 42 of the electronic device is used for performing signaling or data communication with other node devices. The processor 41 may be an integrated circuit chip having signal processing capabilities.
The Processor 41 may be a general-purpose Processor including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor 41 may be any conventional processor or the like.
The Memory 43 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like. The memory 43 stores computer readable instructions which, when executed by the processor 41, enable the electronic device to perform the various steps involved in the above-described method embodiments.
Optionally, the electronic device may further include a memory controller, an input output unit.
The memory 43, the memory controller, the processor 41, the peripheral interface, and the input/output unit are electrically connected to each other directly or indirectly to realize data transmission or interaction. For example, these components may be electrically connected to each other via one or more communication buses 44. The processor 41 is adapted to execute executable modules stored in the memory 43, such as software functional modules or computer programs comprised by the electronic device.
The input and output unit is used for providing a task for a user to create and start an optional time period or preset execution time for the task creation so as to realize the interaction between the user and the server. The input/output unit may be, but is not limited to, a mouse, a keyboard, and the like.
It will be appreciated that the configuration shown in fig. 4 is merely illustrative and that the electronic device may include more or fewer components than shown in fig. 4 or have a different configuration than shown in fig. 4. The components shown in fig. 4 may be implemented in hardware, software, or a combination thereof.
An embodiment of the present application further provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are run on a computer, when the computer program is executed by a processor, the method in the method embodiment is implemented, and details are not repeated here to avoid repetition.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative and, for example, the flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A method of direction finding, comprising:
the method comprises the following steps: sending a PDCCH Order instruction at intervals of preset time so as to enable a terminal to initiate a non-competitive random access request, wherein the random access request comprises: MSG1 request;
step two: acquiring a time advance and a received signal strength indicating value corresponding to the MSG1 request, and determining the target direction of the terminal according to the time advance and the received signal strength indicating value;
step three: moving to the target direction;
step four: and repeating the steps until the terminal is reached.
2. The direction-finding method of claim 1, wherein the step of obtaining the MSG1 request a corresponding timing advance and a corresponding received signal strength indication value, and determining the target direction of the terminal according to the timing advance and the received signal strength indication value comprises:
acquiring a corresponding time advance and a received signal strength indication value requested by the MSG1 in multiple directions;
and determining the target direction of the terminal according to the corresponding time advance and the received signal strength indication value requested by the MSG1 in the multiple directions.
3. The direction-finding method of claim 2, wherein the step of determining the target direction of the terminal according to the corresponding timing advance and received signal strength indication values requested by the MSG1 in the multiple directions comprises:
adding the time advance and the received signal strength indicating value in each direction to obtain a composite value;
and determining the target direction according to the composite value.
4. A method of direction finding according to claim 3, further comprising, before said step of adding said timing advance and received signal strength indicator values in each direction to obtain a composite value:
normalizing the timing advance according to the following equation:
TA value ＝(TA max -TA)*100，
wherein, the TA va l ue For the normalized timing advance, TA is the timing advance, TA max Is 10.
5. A method of direction finding according to claim 3, further comprising, before said step of adding said timing advance and received signal strength indicator values in each direction to obtain a composite value:
normalizing the received signal strength indication value according to the following formula:
wherein the RSSI Q For the normalized received signal strength indicator value, RSSI O Is the received signal strength indicator value.
6. A method of direction finding according to claim 3 wherein the step of determining the target direction from the composite value comprises:
and determining the direction corresponding to the maximum composite value in the multiple directions as the target direction.
7. A method of direction finding according to any one of claims 4-6 wherein the step of adding the timing advance and received signal strength indicator values in each direction to obtain a composite value comprises:
multiplying the time lead by a corresponding weight value to obtain a weight time lead;
multiplying the received signal strength indicated value by a corresponding weight value to obtain a weight received signal strength indicated value;
and adding the weight time advance and the weight received signal strength indicating value to obtain the composite value.
8. A positioning device, comprising:
a sending module, configured to send a PDCCH Order every preset time, so that a terminal initiates a non-contention random access request, where the random access request includes: MSG1 request;
a direction determining module, configured to obtain a timing advance and a received signal strength indicating value corresponding to the MSG1 request, and determine a target direction of the terminal according to the timing advance and the received signal strength indicating value;
the moving module moves towards the target direction;
and the positioning module is used for enabling the sending module, the direction determining module and the positioning module to work repeatedly until the terminal is reached.
9. An electronic device, comprising: an electronic device provided in an embodiment of the present application includes: memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method according to any of claims 1-7 when executing the computer program.
10. A computer-readable storage medium having instructions stored thereon, which when executed on a computer, cause the computer to perform the method of any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210518384.0A CN114980310A (en) | 2022-05-12 | 2022-05-12 | Direction finding method, direction finding device, electronic equipment and computer readable storage medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210518384.0A CN114980310A (en) | 2022-05-12 | 2022-05-12 | Direction finding method, direction finding device, electronic equipment and computer readable storage medium |
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| CN114980310A true CN114980310A (en) | 2022-08-30 |
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| CN202210518384.0A Pending CN114980310A (en) | 2022-05-12 | 2022-05-12 | Direction finding method, direction finding device, electronic equipment and computer readable storage medium |
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| Country | Link |
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| CN (1) | CN114980310A (en) |
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