Positioning method, positioning device and electronic equipment

Abstract

The present invention provides a positioning method, a positioning device and an electronic device, the method comprising: a BBU controls M RRUs to send DL PRSs with different time parameters to a user terminal UE at different times; each RRU reports the measurement information of all RRUs to the BBU; the measurement information of all RRUs is obtained by the UE receiving all DL PRSs and measuring; the BBU determines the measurement information corresponding to each RRU, and reports the measurement information corresponding to each RRU to the LMF; the LMF determines the location information of the UE according to the measurement information corresponding to each RRU and the location information of each RRU. The positioning method provided by the present invention controls multiple RRUs to send DL PRSs to the UE at different times through the BBU, and can determine the corresponding relationship between the measurement information of the UE and each RRU according to the different reported time sequences, so that the LMF can determine the location information of the UE.

Description

Technical Field

[0001] The present invention relates to the field of positioning technology, and in particular to a positioning method, a positioning device and an electronic device. Background Art

[0002] With the development of communication technology, 5G base stations are gradually put into use. At present, in the networking mode where a base station connects multiple RRUs (Remote Radio Units) to one BBU (Building Baseband Unit), the UE (User Equipment) cannot distinguish which RRU transmits the DL PRS (Downlink Position Reference Signal). After the UE reports the location information measured by the DL PRS to the base station, the base station cannot distinguish the reference position of the RRU corresponding to the location information reported by the UE, and thus cannot calculate the UE's location information through the positioning method specified in the protocol. Summary of the invention

[0003] The present invention provides a positioning method, a positioning device and an electronic device, which are used to solve the defect in the prior art that it is difficult to determine the user terminal location information using the existing method in the NR networking mode, and realize the confirmation of the user terminal location information.

[0004] The present invention provides a positioning method, which is applied to a base station in a new air interface NR networking mode, wherein the base station includes a baseband processing unit BBU, a radio remote unit RRU and a positioning management function server LMF; the method includes:

[0005] The BBU controls the M RRUs to send downlink positioning reference signals DL PRS with different time parameters to the user terminal UE at different times; wherein M is 3 or 4;

[0006] Each of the RRUs receives measurement information of all the RRUs reported by the UE, and reports the measurement information of all the RRUs to the BBU; the measurement information of all the RRUs is obtained by the UE receiving and measuring all the DL PRSs;

[0007] The BBU determines measurement information corresponding to each of the RRUs, and reports the measurement information corresponding to each of the RRUs to the LMF;

[0008] The LMF determines the location information of the UE according to the measurement information corresponding to each of the RRUs and the location information of each of the RRUs;

[0009] The measurement information of the RRU includes a downlink reference signal arrival time difference DL RSTD and a downlink reference signal received power DL RSRP.

[0010] According to a positioning method provided by the present invention, the BBU determines the measurement location information corresponding to each of the RRUs, including:

[0011] The BBU determines the measurement information corresponding to each of the RRUs according to the reporting time of the measurement information of all the RRUs.

[0012] According to a positioning method provided by the present invention, the LMF determines the location information of the UE according to the measurement information corresponding to each of the RRUs and the location information of each of the RRUs, including:

[0013] The LMF determines the curve position corresponding to each of the RRUs according to the measurement information corresponding to each of the RRUs, the reporting time of the measurement information of each of the RRUs, and the position information of each of the RRUs;

[0014] The LMF determines the location information of the overlapping positions of the curve positions corresponding to all the RRUs as the location information of the UE.

[0015] According to a positioning method provided by the present invention, the LMF determines the location information of the UE according to the measurement information corresponding to each of the RRUs and the location information of each of the RRUs, including:

[0016] The LMF determines the transmit antenna angle of each RRU according to the measurement information downlink reference signal received power DL RSRP corresponding to each RRU;

[0017] The LMF determines the location information of the UE according to the transmitting antenna angles of all the RRUs.

[0018] The present invention also provides a positioning device, comprising:

[0019] A first processing module, configured for the BBU to control the M RRUs to send downlink positioning reference signals DL PRS with different time parameters to the user terminal UE at different times; wherein M is 3 or 4;

[0020] The second processing module is configured for each of the RRUs to receive measurement information of all the RRUs reported by the UE, and report the measurement information of all the RRUs to the BBU; the measurement information of all the RRUs is obtained by the UE receiving and measuring all the DL PRSs;

[0021] A third processing module is used for the BBU to determine the measurement information corresponding to each of the RRUs, and report the measurement information corresponding to each of the RRUs to the LMF;

[0022] A fourth processing module, configured for the LMF to determine the location information of the UE according to the measurement information corresponding to each of the RRUs and the location information of each of the RRUs;

[0023] The measurement information of the RRU includes a downlink reference signal arrival time difference DL RSTD and a downlink reference signal received power DL RSRP.

[0024] According to a positioning device provided by the present invention, the third processing module is further used for the BBU to determine the measurement information corresponding to each of the RRUs according to the reporting time of the measurement information of all the RRUs.

[0025] According to a positioning device provided by the present invention, the fourth processing module is also used by the LMF to determine the curve position corresponding to each RRU according to the measurement information corresponding to each RRU, the reporting time of the measurement information of each RRU and the location information of each RRU; the LMF determines the location information of the overlapping position of the curve positions corresponding to all the RRUs as the location information of the UE.

[0026] According to a positioning device provided by the present invention, the fourth processing module is also used by the LMF to determine the transmitting antenna angle of each RRU according to the measurement information downlink reference signal received power DL RSRP corresponding to each RRU; the LMF determines the location information of the UE according to the transmitting antenna angles of all the RRUs.

[0027] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, any one of the positioning methods described above is implemented.

[0028] The present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the positioning method described in any one of the above is implemented.

[0029] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the positioning method described above is implemented.

[0030] The positioning method, positioning device and electronic device provided by the present invention control multiple RRUs to send DL PRS to UE at different times through BBU, and can determine the corresponding relationship between the UE's measurement information and each RRU according to the different time sequences reported, so that LMF can determine the UE's location information. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is one of the flow charts of the positioning method provided by the present invention;

[0033] Figure 2 It is a structural schematic diagram of a base station provided by the present invention;

[0034] Figure 3 This is the second flow chart of the positioning method provided by the present invention;

[0035] Figure 4 It is a structural schematic diagram of the positioning device provided by the present invention;

[0036] Figure 5 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Combine the following Figure 1-Figure 5 The positioning method, positioning device and electronic equipment of the present invention are described.

[0039] The positioning method provided in the embodiment of the present invention can be applied to base stations in the 5G NR (New Radio) system networking mode.

[0040] The base station includes a BBU (Building Base band Unit), a RRU (Remote Radio Unit) and a LMF (Location Management Function).

[0041] The positioning method of the embodiment of the present invention mainly includes step 110 , step 120 , step 130 and step 140 .

[0042] Step 110: The BBU controls the M RRUs to send downlink positioning reference signals DL PRS with different time parameters to the user terminal UE at different times.

[0043] It should be noted that in the NR system, when a BBU is connected to multiple RRUs, different DLPRS (Downlink Position Reference Signal) parameters are configured for the multiple RRUs.

[0044] In the related art, multiple RRUs are used as radio frequency extensions of one BBU, and a UE (User Equipment) can only regard the multiple RRUs as one cell, and cannot distinguish which RRUs transmit the same DL PRS sent by the multiple RRUs.

[0045] In this embodiment, the configured different DL PRS parameters may have the same subcarrier spacing, CP type, center frequency, PointA, PRS bandwidth and starting PRB position. However, the BBU may configure M different DL PRS positioning frequency layer parameters corresponding to PRS signals that do not overlap in the time domain.

[0046] The time domain of the PRS signal corresponding to the M different DL PRS positioning frequency layer parameters can be configured, that is, the period can be the same but the offset is different, or the period can be different but the offset is different, so as to ensure different transmission times.

[0047] In other words, each RRU is configured with DL PRS parameters with different time parameters, such as Figure 2 and Figure 3 As shown, each RRU corresponds to each configured DL PRS positioning frequency layer parameter one by one, and the BBU controls each RRU to send different DL PRSs to the UE in sequence from 1 to m in time sequence, where m is a positive integer less than or equal to M.

[0048] In this case, the UE can receive the DL PRS sent by each RRU at a corresponding time point according to the advance configuration of the base station, and detect and determine the measurement information of the RRU corresponding to each DL PRS.

[0049] Step 120: Each RRU receives measurement information of all RRUs reported by the UE, and reports the measurement information of all RRUs to the BBU.

[0050] It can be understood that the measurement information of all RRUs is obtained by the UE receiving and measuring all DL PRSs.

[0051] After receiving the DL PRS at different time points, the UE detects and reports the measurement information of the RRU corresponding to the DL PRS to all RRUs, and the RRU then reports the measurement information of the currently received RRU to the BBU.

[0052] It is understandable that the BBU may mark the identifiers of the connected M RRUs, the location information of each RRU as a TRP (Transmit-Receive Point), the transmitting antenna angle information, etc., so as to facilitate determining the correspondence between each RRU and the measurement information.

[0053] Step 130: The BBU determines measurement information corresponding to each RRU, and reports the measurement information corresponding to each RRU to the LMF.

[0054] It can be understood that the BBU can determine the measurement information corresponding to each RRU according to the multiple measurement information reported by the RRU.

[0055] The measurement information of the RRU includes the downlink reference signal arrival time difference DL RSTD and the downlink reference signal received power DL RSRP.

[0056] In this implementation manner, the BBU may determine the measurement information corresponding to each RRU according to the reporting time of the measurement information of all RRUs.

[0057] It should be noted that the BBU controls the M RRUs to send DL PRSs to the UE at different times. The BBU can determine the time sequence corresponding to each RRU, and then determine the measurement information of each RRU according to the reporting time of the measurement information of all RRUs.

[0058] In this implementation manner, the measurement information of each RRU determined by the UE may be determined according to the DL PRS parameters configured in advance to the RRU.

[0059] After determining the measurement information of each RRU, the BBU may send the measurement information corresponding to each RRU to the LMF.

[0060] Step 140, the LMF determines the location information of the UE according to the measurement information corresponding to each RRU and the location information of each RRU;

[0061] It can be understood that the LMF can use DL TDOA (Downlink Time Difference of Arrival) or DL ​​AOD (Downlink Angle of Departure) to locate the UE.

[0062] In some embodiments, DL TDOA may be utilized for positioning of the UE.

[0063] In this embodiment, LMF calculates the distance difference between the UE and the RRU based on the DL RSTD in the measurement information corresponding to each RRU and the reporting time of the measurement information of each RRU, that is, by measuring the signal arrival time difference between the mobile phone and two nearby base stations.

[0064] In this case, the UE is located on a hyperbola with multiple RRUs as foci and their distance differences as constants. When M is 3, three RRUs can form two or more hyperbolas in pairs, and the intersection is the 2D position coordinate of the UE.

[0065] That is, the position of the curve corresponding to each RRU is determined through the position information of each RRU, and then the intersection position of the curve, that is, the two-dimensional position coordinates of the UE, is determined.

[0066] In other words, the LMF may determine the location information of the overlapping positions of the curve positions corresponding to all RRUs as the location information of the UE.

[0067] In this implementation, the position of the UE can be determined by the reporting time difference of different RRUs, thereby achieving positioning of the UE.

[0068] In some other embodiments, DL AOD may be used to locate the UE.

[0069] In this implementation, both the UE and the RRU adopt a multi-antenna configuration, and the LMF determines the transmit antenna angle of each RRU according to the downlink reference signal received power DL RSRP corresponding to the measurement information of each RRU.

[0070] LMF can determine the location information of the UE based on the transmit antenna angles of all RRUs.

[0071] In this implementation, the transmitting antenna angle can be determined by the DL RSRP of different RRUs, and then the position of the UE can be determined, thereby achieving positioning of the UE.

[0072] It should be noted that according to the 3GPP R16 TS38.331 protocol, the UE can configure up to 4 DL PRS positioning frequency layer parameters, and the UE can report up to 4 DL RSTD / RSRP.

[0073] When UE positioning is performed through DL TDOA, at least three RRUs are required to implement positioning, so M can be 3 or 4.

[0074] According to the positioning method provided by the embodiment of the present invention, the BBU controls multiple RRUs to send DL PRS to the UE at different times, and can determine the correspondence between the UE's measurement information and each RRU according to the different time sequences reported, so that the LMF can determine the UE's location information.

[0075] The positioning device provided by the present invention is described below. The positioning device described below and the positioning method described above can be referenced to each other.

[0076] like Figure 4 As shown, the positioning device according to the embodiment of the present invention mainly includes a first processing module 410 , a second processing module 420 , a third processing module 430 and a fourth processing module 440 .

[0077] The first processing module 410 is used for the BBU to control M RRUs to send downlink positioning reference signals DL PRS with different time parameters to the user terminal UE at different times; wherein M is 3 or 4;

[0078] The second processing module 420 is configured for each RRU to receive measurement information of all RRUs reported by the UE, and report the measurement information of all RRUs to the BBU; the measurement information of all RRUs is obtained by the UE receiving and measuring all DL PRSs;

[0079] The third processing module 430 is used for the BBU to determine the measurement information corresponding to each RRU and report the measurement information corresponding to each RRU to the LMF;

[0080] A fourth processing module 440 is used for the LMF to determine the location information of the UE according to the measurement information corresponding to each RRU and the location information of each RRU;

[0081] The measurement information of the RRU includes the downlink reference signal arrival time difference DL RSTD and the downlink reference signal received power DL RSRP.

[0082] According to the positioning device provided by the embodiment of the present invention, the BBU controls multiple RRUs to send DL PRS to the UE at different times, and can determine the correspondence between the UE's measurement information and each RRU according to the different time sequences reported, so that the LMF can determine the UE's location information.

[0083] In some embodiments, the third processing module is further used by the BBU to determine the measurement information corresponding to each RRU according to the reporting time of the measurement information of all RRUs.

[0084] In some embodiments, the fourth processing module is also used by LMF to determine the curve position corresponding to each RRU based on the measurement information corresponding to each RRU, the reporting time of the measurement information of each RRU and the location information of each RRU; LMF determines the location information of the overlapping positions of the curve positions corresponding to all RRUs as the location information of the UE.

[0085] In some embodiments, the fourth processing module is also used by LMF to determine the transmitting antenna angle of each RRU according to the measurement information downlink reference signal received power DL RSRP corresponding to each RRU; LMF determines the location information of the UE according to the transmitting antenna angles of all RRUs.

[0086] Figure 5 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 5 As shown, the electronic device may include: a processor 510, a communication interface 520, a memory 530 and a communication bus 540, wherein the processor 510, the communication interface 520 and the memory 530 complete mutual communication through the communication bus 540. The processor 510 may call the logic instructions in the memory 530 to execute the positioning method, which includes: the BBU controls M RRUs to send downlink positioning reference signals DLPRS with different time parameters to the user terminal UE at different times; wherein M is 3 or 4; each RRU receives the measurement information of all RRUs reported by the UE, and reports the measurement information of all RRUs to the BBU; the measurement information of all RRUs is obtained by the UE receiving all DL PRS and measuring; the BBU determines the measurement information corresponding to each RRU, and reports the measurement information corresponding to each RRU to the LMF; the LMF determines the location information of the UE according to the measurement information corresponding to each RRU and the location information of each RRU; the measurement information of the RRU includes the downlink reference signal arrival time difference DL RSTD and the downlink reference signal received power DL RSRP.

[0087] In addition, the logic instructions in the above-mentioned memory 830 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0088] On the other hand, the present invention also provides a computer program product, which includes a computer program, and the computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the positioning method provided by the above methods, and the method includes: the BBU controls M RRUs to send downlink positioning reference signals DL PRS with different time parameters to the user terminal UE at different times; wherein M is 3 or 4; each RRU receives the measurement information of all RRUs reported by the UE, and reports the measurement information of all RRUs to the BBU; the measurement information of all RRUs is obtained by the UE receiving all DL PRS and measuring; the BBU determines the measurement information corresponding to each RRU, and reports the measurement information corresponding to each RRU to the LMF; the LMF determines the location information of the UE based on the measurement information corresponding to each RRU and the location information of each RRU; the measurement information of the RRU includes the downlink reference signal arrival time difference DL RSTD and the downlink reference signal received power DL RSRP.

[0089] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which is implemented by a processor to execute the positioning method provided by the above-mentioned methods when the computer program is executed, the method comprising: the BBU controls M RRUs to send downlink positioning reference signals DL PRS with different time parameters to the user terminal UE at different times; wherein M is 3 or 4; each RRU receives the measurement information of all RRUs reported by the UE, and reports the measurement information of all RRUs to the BBU; the measurement information of all RRUs is obtained by the UE receiving all DL PRS and measuring; the BBU determines the measurement information corresponding to each RRU, and reports the measurement information corresponding to each RRU to the LMF; the LMF determines the location information of the UE based on the measurement information corresponding to each RRU and the location information of each RRU; the measurement information of the RRU includes the downlink reference signal arrival time difference DL RSTD and the downlink reference signal received power DL RSRP.

[0090] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0091] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A positioning method, characterized in that: Applicable to a base station in a new air interface NR networking mode, the base station includes a baseband processing unit BBU, a radio remote unit RRU and a positioning management function server LMF; the method includes: The BBU controls the M RRUs to send downlink positioning reference signals DL PRS with different time parameters to the user terminal UE at different times; wherein M is 3 or 4; Each of the RRUs receives measurement information of all the RRUs reported by the UE, and reports the measurement information of all the RRUs to the BBU; the measurement information of all the RRUs is obtained by the UE receiving and measuring all the DL PRSs; The BBU determines measurement information corresponding to each of the RRUs, and reports the measurement information corresponding to each of the RRUs to the LMF; The LMF determines the location information of the UE according to the measurement information corresponding to each of the RRUs and the location information of each of the RRUs; The measurement information of the RRU includes a downlink reference signal arrival time difference DL RSTD and a downlink reference signal received power DL RSRP.

2. The positioning method according to claim 1, characterized in that: The BBU determines measurement location information corresponding to each of the RRUs, including: The BBU determines the measurement information corresponding to each of the RRUs according to the reporting time of the measurement information of all the RRUs.

3. The positioning method according to claim 1, characterized in that: The LMF determines the location information of the UE according to the measurement information corresponding to each of the RRUs and the location information of each of the RRUs, including: The LMF determines the curve position corresponding to each of the RRUs according to the measurement information corresponding to each of the RRUs, the reporting time of the measurement information of each of the RRUs, and the position information of each of the RRUs; The LMF determines the location information of the overlapping positions of the curve positions corresponding to all the RRUs as the location information of the UE.

4. The positioning method according to claim 1, characterized in that: The LMF determines the location information of the UE according to the measurement information corresponding to each of the RRUs and the location information of each of the RRUs, including: The LMF determines the transmit antenna angle of each RRU according to the measurement information downlink reference signal received power DL RSRP corresponding to each RRU; The LMF determines the location information of the UE according to the transmitting antenna angles of all the RRUs.

5. A positioning device, characterized in that: include: A first processing module, configured for the BBU to control the M RRUs to send downlink positioning reference signals DL PRS with different time parameters to the user terminal UE at different times; wherein M is 3 or 4; A second processing module is used for each of the RRUs to receive measurement information of all the RRUs reported by the UE, and report the measurement information of all the RRUs to the BBU; the measurement information of all the RRUs is obtained by the UE receiving and measuring all the DLPRSs; A third processing module is used for the BBU to determine the measurement information corresponding to each of the RRUs, and report the measurement information corresponding to each of the RRUs to the LMF; A fourth processing module, configured for the LMF to determine the location information of the UE according to the measurement information corresponding to each of the RRUs and the location information of each of the RRUs; The measurement information of the RRU includes a downlink reference signal arrival time difference DL RSTD and a downlink reference signal received power DL RSRP.

6. The positioning device according to claim 5, characterized in that: The third processing module is also used for the BBU to determine the measurement information corresponding to each of the RRUs according to the reporting time of the measurement information of all the RRUs.

7. The positioning device according to claim 5, characterized in that: The fourth processing module is also used by the LMF to determine the curve position corresponding to each RRU according to the measurement information corresponding to each RRU, the reporting time of the measurement information of each RRU and the location information of each RRU; the LMF determines the location information of the overlapping positions of the curve positions corresponding to all the RRUs as the location information of the UE.

8. The positioning device according to claim 5, characterized in that: The fourth processing module is also used for the LMF to determine the transmitting antenna angle of each RRU according to the measurement information downlink reference signal received power DL RSRP corresponding to each RRU; the LMF determines the location information of the UE according to the transmitting antenna angles of all the RRUs.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the positioning method according to any one of claims 1 to 4 is implemented.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the positioning method according to any one of claims 1 to 4 is implemented.

Images