CN112203214A

CN112203214A - Terminal device positioning method and device, storage medium and electronic device

Info

Publication number: CN112203214A
Application number: CN201910538898.0A
Authority: CN
Inventors: 李乐
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2021-01-08
Also published as: WO2020253359A1

Abstract

The invention provides a positioning method and device of terminal equipment, a storage medium and an electronic device, wherein the method comprises the following steps: determining a first angle of the terminal equipment relative to the base station from a beam accessed by the terminal equipment; determining a Timing Advance (TA) value when the terminal equipment is accessed to the wave beam; determining a first distance of the terminal equipment relative to the base station based on the distance corresponding to the TA value; and positioning the terminal equipment by using the first angle and the first distance. According to the invention, the problem of positioning the 5G terminal equipment is solved, and the effect of accurately positioning the terminal equipment is achieved.

Description

Terminal device positioning method and device, storage medium and electronic device

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for positioning a terminal device, a storage medium, and an electronic apparatus.

Background

With the development of mobile communication technology, the requirements of various business applications on positioning and positioning accuracy are higher and higher. In a fifth Generation (5rd Generation, abbreviated as 5G) Network architecture, a 5G base station (gbnodeb, abbreviated as gNB) and a 5G terminal device (User Equipment, abbreviated as UE) related to a Radio Access Network (RAN) meet a requirement for positioning accuracy to a meter level. The aim is to use a mobile phone instead of a professional mapping terminal or a vehicle-mounted terminal to realize meter-level positioning accuracy. In addition, the mobile communication has the characteristic of whole network, and can complete positioning under various scenes on the premise of ensuring seamless coverage.

However, no scheme for positioning the 5G terminal device has appeared in the prior art.

In view of the above technical problems, no effective solution has been proposed in the related art.

Disclosure of Invention

The embodiment of the invention provides a positioning method and device of terminal equipment, a storage medium and an electronic device, and at least solves the problem of positioning 5G terminal equipment in the related art.

According to an embodiment of the present invention, there is provided a method for positioning a terminal device, including: determining a first angle of a terminal device relative to a base station from a beam accessed by the terminal device; determining a Timing Advance (TA) value when the terminal equipment accesses the wave beam; determining a first distance of the terminal equipment relative to the base station based on the distance corresponding to the TA value; and positioning the terminal equipment by using the first angle and the first distance.

According to another embodiment of the present invention, there is provided a positioning apparatus for a terminal device, including: the device comprises a first determining module, a second determining module and a third determining module, wherein the first determining module is used for determining a first angle of a terminal device relative to a base station from a beam accessed by the terminal device; a second determining module, configured to determine a TA value of a timing advance when the terminal device accesses the beam; a third determining module, configured to determine, based on the distance corresponding to the TA value, a first distance of the terminal device with respect to the base station; and the positioning module is used for positioning the terminal equipment by utilizing the first angle and the first distance.

According to a further embodiment of the present invention, there is also provided a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the above method embodiments when executed.

According to yet another embodiment of the present invention, there is also provided an electronic device, including a memory in which a computer program is stored and a processor configured to execute the computer program to perform the steps in any of the above method embodiments.

According to the invention, the base station determines the first angle of the terminal equipment relative to the base station from the wave beam accessed by the terminal equipment; determining a TA value of a timing advance when the terminal equipment is accessed to the wave beam; determining a first distance of the terminal equipment relative to the base station based on the distance corresponding to the TA value; the base station locates the terminal device using the first angle and the first distance. The base station can determine the position of the terminal equipment from the beam accessed by the terminal equipment. Thereby the terminal equipment can be accurately positioned. Therefore, the problem of positioning the 5G terminal equipment can be solved, and the effect of accurately positioning the terminal equipment is achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a block diagram of a hardware structure of a mobile terminal of a positioning method of a terminal device according to an embodiment of the present invention;

fig. 2 is a flowchart of a positioning method of a terminal device according to an embodiment of the present invention;

fig. 3 is a flowchart of angular position positioning in the present embodiment;

fig. 4 is a flowchart of angular position update in the present embodiment;

fig. 5 is a schematic view of the distance position location in the present embodiment;

fig. 6 is a diagram of a base station transmission beam of a 5G communication system in a millimeter wave band according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of beam acquisition-wide beam angle position determination in an embodiment in accordance with the invention;

FIG. 8 is a schematic illustration of narrow beam angular position determination in an embodiment in accordance with the invention;

FIG. 9 is a diagram illustrating refined beam angle position determination in an embodiment in accordance with the invention;

FIG. 10 is a schematic diagram of UE distance location positioning according to an embodiment of the present invention;

fig. 11 is a schematic diagram of a positioning location update of a narrow beam switching P2 process according to an embodiment of the present invention;

fig. 12 is a schematic diagram of a positioning location update of the wide-narrow beam switching P2 process according to the embodiment of the present invention;

FIG. 13 is a schematic diagram of a P1 process location update according to an embodiment of the present invention;

fig. 14 is a block diagram of a positioning apparatus of a terminal device according to an embodiment of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The method provided by the embodiment of the application can be executed in a mobile terminal, a computer terminal or a similar operation device. Taking an example of the method performed by a mobile terminal, fig. 1 is a block diagram of a hardware structure of the mobile terminal of the method for positioning a terminal device according to the embodiment of the present invention. As shown in fig. 1, the mobile terminal 10 may include one or more (only one shown in fig. 1) processors 102 (the processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data, and optionally may also include a transmission device 106 for communication functions and an input-output device 108. It will be understood by those skilled in the art that the structure shown in fig. 1 is only an illustration, and does not limit the structure of the mobile terminal. For example, the mobile terminal 10 may also include more or fewer components than shown in FIG. 1, or have a different configuration than shown in FIG. 1.

The memory 104 may be used to store computer programs, for example, software programs and modules of application software, such as a computer program corresponding to the positioning method of the terminal device in the embodiment of the present invention, and the processor 102 executes various functional applications and data processing by running the computer programs stored in the memory 104, so as to implement the method described above. The memory 104 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory located remotely from the processor 102, which may be connected to the mobile terminal 10 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The transmission device 106 is used for receiving or transmitting data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the mobile terminal 10. In one example, the transmission device 106 includes a Network adapter (NIC), which can be connected to other Network devices through a base station so as to communicate with the internet. In one example, the transmission device 106 may be a Radio Frequency (RF) module, which is used for communicating with the internet in a wireless manner.

In this embodiment, a method for positioning a terminal device is provided, and fig. 2 is a flowchart of a method for positioning a terminal device according to an embodiment of the present invention, as shown in fig. 2, the flowchart includes the following steps:

step S202, determining a first angle of the terminal equipment relative to the base station from the wave beam accessed by the terminal equipment;

step S204, determining a timing advance TA value when the terminal equipment is accessed to the wave beam;

step S206, determining a first distance of the terminal equipment relative to the base station based on the distance corresponding to the TA value;

and S208, positioning the terminal equipment by using the first angle and the first distance.

According to the invention, the base station is adopted to determine the first angle of the terminal equipment relative to the base station from the wave beam accessed by the terminal equipment; determining a TA value of a timing advance when the terminal equipment is accessed to the wave beam; determining a first distance of the terminal equipment relative to the base station based on the distance corresponding to the TA value; the base station locates the terminal device using the first angle and the first distance. The base station can determine the position of the terminal equipment from the beam accessed by the terminal equipment. Thereby the terminal equipment can be accurately positioned. Therefore, the problem of positioning the 5G terminal equipment can be solved, and the effect of accurately positioning the terminal equipment is achieved.

Alternatively, the main body of the above steps may be a base station, etc., but is not limited thereto.

Optionally, the execution sequence of step S202 and step S204 may be interchanged, that is, step S204 may be executed first, and then step S202 may be executed.

Optionally, the embodiment may be applied to a scenario in which the terminal device is located in a 5G scenario, where the terminal device includes, but is not limited to, a mobile phone, a computer, a vehicle-mounted device, and the like.

Optionally, in this embodiment, the positioning of the terminal device may be to acquire a position of the terminal device in space. The position of the space may be determined by a first distance and a first angle of the terminal device to the base station.

Alternatively, in 5G communication systems in millimeter wave band, signal attenuation of up to several tens of dB may cause the communication system to fail to operate properly. In this case, the beamforming of 5G can effectively cope with the path loss. The 5G base station can support a large-scale antenna array, and the number of configurable antennas can even reach 1024. The 5G beam forming technology effectively superposes signals by adjusting the phase of each antenna to generate stronger signal gain to overcome the path loss, thereby providing powerful guarantee for the transmission quality of 5G wireless signals. The Beam forming technique focuses the wireless signal to form a directional Beam. Generally, the narrower the beam, the greater the signal gain.

After using beamforming techniques, the 5G base station must use multiple differently directed beams to fully cover the cell. In the downlink process, the base station transmits wireless signals by using beams with different directions at a time, and the process is called Beam scanning (Beam scanning); meanwhile, the terminal equipment measures wireless signals (Beam measurement) emitted by different beams and reports related information (Beam Reporting) to the base station; the base station determines the most recent transmit Beam (Beam determination) directed at the terminal device from the terminal device reports.

A hierarchical scanning strategy is adopted in 5G communication, namely, scanning from wide to narrow. The first stage is coarse scanning, where the base station covers the entire cell with a small number of wide beams and scans the direction in which each wide beam is aligned accordingly. The second stage is a fine scan, and the base station scans one by one the directions that have been covered by the wide beam in the first stage with a plurality of narrow beams. Finally, considering that the terminal equipment may move, in order to better track the terminal equipment (Beam tracking), the hierarchical scanning may be expanded at any time according to the needs of each terminal equipment, and the optimal Beam is switched continuously, so as to provide wireless coverage for the terminal equipment.

Alternatively, an important characteristic of uplink transmission is that different terminal equipments are orthogonally multiple-access in time and frequency, i.e. uplink transmissions from different terminal equipments in the same cell do not interfere with each other. In order to ensure orthogonality of uplink transmission and avoid intra-cell interference, the base station gNB requires that the arrival times of signals from different terminal equipments in the same subframe but different frequency resources at the gNB are substantially aligned. As long as the gNB receives the uplink data sent by the terminal device within the Cyclic Prefix (CP), the uplink data can be correctly decoded, and therefore, the uplink synchronization requires that the time when signals from different terminal devices in the same subframe reach the gNB falls within the CP.

Alternatively, from the terminal device side, the Timing Advance (TA) is essentially a negative offset (negative offset) between the start time of receiving the downlink subframe and the time of transmitting the uplink subframe. The gNB can control the arrival time of the uplink signal from different terminal devices at the gNB by appropriately controlling the offset of each terminal device. For terminal devices farther from the gNB, due to larger transmission delay, the terminal devices closer to the gNB are required to transmit uplink data earlier.

The 5G communication system in millimeter wave band adopts larger subcarrier interval, more Fast Fourier Transform (FFT) points, shorter time per Ts, shorter distance represented by TA value and higher position precision. The distance corresponding to the TA value is calculated with reference to 1 Ts. Meaning distance is the propagation speed (speed of light) 1Ts/2 (sum of up and down paths). For example, the subcarrier spacing is 120kHz, the FFT size is 4096, and the time advance distance for 1Ts is equal to: (3 x 10 x 8 x 1/(120000 x 4096))/2 ═ 0.61 m.

In the random access process of the terminal equipment, the reporting range of the TA value is 0-1282, and according to the TA value, the terminal equipment adjusts the uplink transmission time N _ TA to TA 16Ts, and the value is always positive. For example: and when TA is 1, N _ TA is 1 × 16Ts, which indicates a distance of 16 × 0.61m — 9.76m, and it can be calculated that the maximum access distance between the terminal device and the network in the initial access stage is 1282 × 9.76m — 12.51 km. In the embodiment, the positioning distance of the 5G communication system in the millimeter wave band to the terminal device is 12.51 km.

In an optional embodiment, determining the first angle of the terminal device relative to the base station from the beam accessed by the terminal device comprises:

s1, sending a first measurement request to the terminal device, wherein the first measurement request is used for requesting to acquire a first Reference Signal Received Power (RSRP) value of a first wide beam accessed by the terminal device;

s2, receiving a first RSRP value sent by the terminal equipment;

and S3, determining a first angle of the terminal device relative to the base station based on the first RSRP value.

Optionally, in this embodiment, the first measurement request sent by the base station to the terminal device is used for measuring the wide beam, the terminal device analyzes a time when the first measurement request obtains the first measured wide beam CSIRS and a measurement reporting time, and the terminal device measures the CSIRS according to an indication of the first measurement request and reports the first RSRP value.

In an optional embodiment, after receiving the first RSRP value sent by the terminal device, the method further includes:

s1, sending a second measurement request to the terminal device, where the second measurement request is used to request a second RSRP value of a first narrow beam accessed by the terminal device, where the first narrow beam is adjacent to the first wide beam;

s2, receiving a second RSRP value sent by the terminal equipment;

and S3, determining a first angle of the terminal device relative to the base station based on the second RSRP value.

Optionally, in this embodiment, after receiving the first RSRP value sent by the terminal device, the base station issues a second measurement request for measuring a narrow beam or a refined beam adjacent to the first wide beam to the terminal device, and the terminal device analyzes the second measurement request to obtain a time for measuring the first narrow beam and a time for reporting the measurement. For example, the terminal device selects the best 2 narrow beams, reports 2 RSRP values, and the base station determines the narrow beam corresponding to the maximum RSRP value as the first narrow beam.

In an optional embodiment, determining the first angle of the terminal device relative to the base station based on the second RSRP value comprises:

s1, determining the ID of the first narrow beam from the second RSRP value;

s2, determining the horizontal angle of the terminal device relative to the base station and the vertical angle of the terminal device relative to the base station by using the ID of the first narrow beam;

and S3, determining the horizontal angle and the vertical angle as a first angle of the terminal equipment relative to the base station.

Alternatively, for example, if the ID of the first narrow beam is 33, then 33 corresponds to a horizontal angle of 21 °, and the horizontal bandwidth is 13 °; the vertical angle is 5 deg., and the vertical bandwidth is 6 deg.. The position of the terminal equipment determined by the base station is 14.5-27.5 degrees horizontally and 2-8 degrees vertically.

If the refined beam ID where the terminal device is located is 34, the horizontal angle is 28 degrees, and the horizontal bandwidth is 14 degrees; the vertical angle is 5 deg., and the vertical bandwidth is 6 deg.. The terminal equipment is positioned at 21 deg. -35 deg. horizontally and 2 deg. -8 deg. vertically.

By the embodiment, the spatial position of the terminal equipment can be accurately determined.

In an optional embodiment, before determining the first angle of the terminal device with respect to the base station based on the first RSRP value, the method further comprises:

s1, determining the wide beam identification ID from the signaling message MSG sent by the terminal equipment;

and S2, determining the wide beam corresponding to the wide beam identification ID as the first wide beam accessed by the terminal device.

Optionally, before the terminal device is powered on for Access, each terminal device scans 8 Synchronization Signal Blocks (SSBs) with wide beams in 0-7 directions sent by the base station, determines an optimal transmit beam of the base station for the terminal device according to an optimal receive direction of the SSB, and then sends MSG1 on a time-frequency resource of a Physical Random Access Channel (PRACH) corresponding to the beam. The later access flows (MSG1, 2, 3, 4) all use this wide beam. Media Access Control (MAC) and Random Access Control (RAC) in the base station are judged by the received MSG1, different time-frequency resources used by MSG1 sent by different wide-beam terminal devices are different, and a wide-beam ID used in the Access process is obtained by the PRACH time-frequency resources used by the terminal devices. The base station MAC access processing module RAC reports the wide BEAM ID used in the UE access process to the BEAM module, the BEAM module stores as wBeamIdInUse, and reports the wide BEAM ID to the base station positioning processing module. For example, if the first wide beam ID is 5, then the horizontal angle is 21 °, and the horizontal bandwidth is 13 °; the vertical angle is 2 degrees, and the vertical bandwidth is 10 degrees. The position of the terminal equipment is 14.5-27.5 degrees horizontally and-3-7 degrees vertically.

In an optional embodiment, after determining the first angle of the terminal device with respect to the base station from the beam accessed by the terminal device, the method further includes:

s1, periodically sending a third measurement request to the terminal device through the MAC, where the third measurement request is used to request measurement of a signal of a second narrow beam adjacent to the narrow beam accessed by the terminal device;

s2, receiving a first measurement report sent by the terminal equipment, wherein the first measurement report comprises a signal of a second narrow beam;

s3, when the signal of the second narrow beam is larger than the signal of the narrow beam accessed by the terminal equipment, the terminal equipment is instructed to switch to the second narrow beam for access;

s4, determining the angle corresponding to the second narrow beam as a second angle of the terminal device relative to the base station.

Optionally, in this embodiment, for example, the base station periodically issues the measurement using 5 narrow beams adjacent to the first wide beam or a refined beam measurement configuration. The terminal device performs narrow beam or refined beam measurements. This process may trigger a narrow beam handover and the UE's location angle position may be updated.

For example, 33 and 48 are both narrow beams added to the first wide beam 5, and the table beam and angular position are both updated. The positioning angle position is updated from H of 14.5-27.5 degrees V of 2-7 degrees to H of 14.5-27.5 degrees V of 7-13 degrees.

By the embodiment, the terminal equipment can be positioned in real time in the moving process of the terminal equipment.

In an optional embodiment, before periodically sending the fourth measurement request to the terminal device through the MAC, the method further includes:

s1, sending a fourth measurement request to the terminal device through a radio resource control RRC, where the fourth measurement request is used to request to measure an access configuration of the terminal device, and the access configuration is used to trigger sending the fourth measurement request to the terminal device.

In this embodiment, after the terminal device accesses the base station, in the random access process, the base station sends the configuration information of the narrow beam and the configuration information reported by measurement to the terminal device periodically through the third measurement request.

s1, periodically sending a fifth measurement request to the terminal device through the MAC, wherein the fifth measurement request is used to request measurement of a signal of a second wide beam adjacent to the wide beam accessed by the terminal device;

s2, receiving a second measurement report sent by the terminal device, wherein the second measurement report comprises a second wide beam signal;

s3, when the signal of the second wide beam is larger than the signal of the wide beam accessed by the terminal device, the terminal device is instructed to switch to the second wide beam for accessing;

and S4, determining the angle corresponding to the second wide beam as a third angle of the terminal device relative to the base station.

Optionally, in this embodiment, after the terminal device accesses the first wide beam, if the RSRP value of the adjacent wide beam is greater than the first RSRP value, the terminal device is switched to the adjacent wide beam.

In an optional embodiment, after determining the angle corresponding to the second wide beam as the third angle of the terminal device relative to the base station, the method further includes:

s1, periodically sending a sixth measurement request to the terminal device through the MAC, wherein the sixth measurement request is used to request to measure signals of all wide beams corresponding to the terminal device;

s2, instructing the terminal device to hop into a third wide beam whose signal is greater than the second wide beam, if there is a signal greater than the second wide beam among the signals of all wide beams;

s3, determining the angle corresponding to the third wide beam as a fourth angle of the terminal device relative to the base station;

and S4, continuing to measure the narrow beam accessed by the terminal device in the third wide beam.

In this embodiment, the terminal device switches the terminal device to the third wide beam if the RSRP value of the third wide beam, which is not the neighboring wide beam, appears to be greater than the first RSRP value after the terminal device accesses the first wide beam.

In an optional embodiment, determining a TA value of a timing advance when the terminal device accesses a beam includes:

s1, determining the initial TA value of the terminal device from the time of the received random access preamble sent by the terminal device;

s2, measuring a channel Sounding Reference Signal (SRS) or a demodulation reference signal (DMRS) in uplink transmission of the terminal equipment;

s3, determining the current TA value of the terminal equipment in the SRS or DMRS;

and S4, accumulating the initial TA value and the current TA value to obtain the TA value.

Optionally, the TA value determined when the terminal device is powered on is an initial TA value. For example, in the random access of the terminal device, the gNB calculates an initial TA value by detecting the preamble time actually received. Such as: TA is 10, then N _ TA is 10 16Ts, characterized by a distance of 160 × 0.61m 97.6 m.

In an optional embodiment, determining a distance corresponding to the TA value, and obtaining the first distance of the terminal device with respect to the base station includes:

s1, determining the uplink sending time sent by the terminal equipment on the wave beam by utilizing the corresponding relation between the TA and the uplink sending time;

s2, the distance indicated by the upstream transmission time is determined as the first distance.

Optionally, in this embodiment, for example, TA is 10, the uplink transmission time N _ TA is 10 × 16Ts, and the characterized distance is 160 × 0.61m — 97.6 m.

In an alternative embodiment, locating the terminal device using the first angle and the first distance includes:

s1, determining a coordinate position of the terminal device by using the first angle and the first distance, wherein the coordinate position comprises longitude, latitude and altitude of the terminal device obtained by calculating the longitude, latitude and altitude position of the base station antenna and the angle and distance between the base station antenna and the terminal which are obtained in advance;

and S2, positioning the terminal equipment by using the coordinate position.

Optionally, the location of the terminal device is a location of a spatial position.

In an optional embodiment, after determining the coordinate position of the terminal device using the first angle and the first distance, the method further comprises:

s1, sending the longitude, latitude, and altitude of the terminal device to the core network, so as to instruct the core network to determine the communication hotspot area from the longitude, latitude, and altitude of the terminal device.

In this embodiment, when a plurality of terminal devices access in a 5G millimeter wave coverage area, each terminal device is started to position and moves to track the position, the distance between the position of the terminal device and the position of the base station antenna is converted into Longitude (Longitude), Latitude (Longitude) and altitude (elevation) through the angle between the position of the terminal device and the position of the base station antenna, the Longitude (Latitude) and altitude (elevation) are reported to a core network through User Location Information, and the core network reports graphic display monitoring software, so that graphic real-time position display of a plurality of UE radars is realized, and accurate areas of communication hotspots are searched out.

In summary, the 5G terminal device is accurately positioned by using the best beam reported to the base station by the terminal device in the beam management process and the TA value measured by the base station.

The invention is illustrated below with reference to specific examples:

in this embodiment, a UE is taken as an example for a terminal device to explain, and fig. 3 is a flowchart of angular position positioning in this embodiment, as shown in fig. 3, including the following steps:

s301: a 5G communication system in the millimeter wave band uses a plurality of beams, each covering a sector of a very narrow angular range. Before accessing, each UE scans the signal intensity of a plurality of wave beams issued by a base station.

S302: and the UE adopts the beam with the best signal for random access.

S303: the base station acquires the used beam ID through the time-frequency resources used by the UE for access,

s304: and acquiring the angle of the UE position from the beam ID. Then, the base station further issues a measurement request through a Control channel of a Medium Access Control (MAC) layer, requesting the UE to measure the signal strength of a narrower and finer beam near the UE position, i.e. a beam with a narrower coverage angle.

S305: and the UE reports the measurement result to the base station.

S306: the base station further pinpoints the angular position of the UE relative to the base station through measurement reports.

Fig. 4 is a flowchart of angular position update in the present embodiment, and as shown in fig. 4, the method includes the following steps:

s401: after the UE accesses, the base station issues configuration information related to measurement through Radio Resource Control (RRC for short). The periodic measurement request is issued through a Control channel of a Medium Access Control (MAC) layer. And the position angle information tracking of the UE in moving is realized by measuring the signal intensity of all wide beams and the narrow and fine beams attached to the current UE. First, the base station issues measurement configuration through RRC.

S402: and the base station sends a request for periodically measuring narrow beams near the position of the UE through the MAC.

S403: and the UE reports the measurement report.

S404: and if the new narrow beam signal is better than the original positioning narrow beam, carrying out narrow beam switching and updating the position.

S405: meanwhile, the base station sends a request for periodically measuring the wide beams near the UE position through the MAC.

S406: and the UE reports the measurement report.

S407: and if the new wide beam signal is better than the original wide beam, performing wide beam switching. And simultaneously, the base station sends down all the wide beams periodically through the MAC.

S408: and the UE reports the measurement report.

S409: and if the new wide beam signal is better than the original fixed bit wide beam, performing wide beam hopping cutting. If no new wave beam signal is better than the original positioning wave beam or the wide wave beam is switched, waiting for the next period measurement trigger after the jump switching. When the narrow beam switching is performed in S402, S403, and S404, the tracking update of the angular position is completed.

Fig. 5 is a flowchart of distance positioning in the present embodiment, and as shown in fig. 5, the method includes the following steps:

s501: in random access, a 5G UE transmits a random access preamble for establishing Radio Resource Control (RRC) connection.

S502: the time and frequency position of the Preamble are distributed by the gNB side, and the base station calculates the Timing Advance (TA) amount by detecting the actually received Preamble time.

S503: and converting the time advance into the distance.

S504: and saving the current TA value, and measuring the SRS/DMRS signals in the uplink transmission of the corresponding UE by the base station after the access.

S505: to determine the TA value for each UE. The TA value is continuously updated by adding the stored initial TA value and accumulation.

S506: and continuously updating the UE distance positioning information.

After the UE is located, the location position of the UE may be reported. And expanding the position Information of the User Location Information terminal equipment in the IE (Information element) Information element reported between the 5G core network and the NG-RAN. This IE provides UE location information. Extending this IE adds precise location information, Longitude (Latitude), Latitude (Longitude) and altitude (elevation) of the UE. The longitude and latitude and the altitude of the antenna are tested during installation of the base station, the angular direction information (the angle between the position of the UE and the position of the base station antenna) is determined through the wave beam, the distance information determined by the TA is (the distance between the position of the UE and the position of the base station antenna), and the longitude and latitude and the altitude of the current position of the UE are obtained through conversion. The IE is carried in the uplink message between the RAN and the core network, and the accurate location information of the UE is reported to the core network. As shown in the extended User Location Information table in table 1, the core network uses the accurate Location Information of the UE reported by the RAN to implement a more comprehensive Location service.

Table 1:

in an optional embodiment, the present embodiment may be applied to a scenario where a single UE is powered on and located, specifically as follows:

in the 5G communication system of the millimeter wave band, beams transmitted by the base station are as shown in fig. 6. There are 53 beams in the 120 sector cell, and the 53 beams are divided into: 8 wide beams, horizontal direction from-55 to 55, horizontal width from 12 to 21, middle 12, two sides 21. The vertical direction is 2 °, and the vertical width is 10 °. The horizontal width of the 24 narrow beams is the same as that of the corresponding wide beams, and the horizontal angle is also the same as that of the wide beams. There are three groups in the vertical direction: 0 °, 5 °, 10 °. The vertical width is 6 deg.. The narrow beam is narrower in the vertical direction and the direction is more refined. And 21 refined beams are positioned in the middle of the two wide beams, the horizontal width of the refined beams is 12 degrees to 18 degrees, the middle of the refined beams is 12 degrees, and the two refined beams are 18 degrees. The vertical direction is also divided into three groups, and the vertical width of 0 degree, 5 degrees and 10 degrees is 6 degrees.

In this embodiment, the horizontal resolution angle is 12 ° to 21 °, and the vertical resolution angle in the coverage is 6 °.

Initial position angle positioning, beam capturing: before starting up and accessing, each UE scans 8 SSBs of wide beams in 0-7 directions issued by a base station, determines the best transmitting beam of the base station for the UE according to the best receiving direction of the SSBs, and then transmits MSG1 on the PRACH time-frequency resource corresponding to the beam. The later access flows (MSG1, 2, 3, 4) all use this wide beam. The base station MAC judges through the received MSG1 that the time frequency resources used by different wide beam UEs for transmitting MSG1 are different, and acquires the wide beam ID used in the access process through the PRACH time frequency resources used by the UEs. The base station MAC access processing module RAC reports the wide BEAM ID used in the UE access process to the BEAM module, the BEAM module stores as wBeamIdInUse, and reports the wide BEAM ID to the base station positioning processing module.

As shown in table 2, the wide beam ID is 5, the horizontal angle is 21 °, and the horizontal bandwidth is 13 °;

table 2:

the vertical angle is 2 degrees, and the vertical bandwidth is 10 degrees. Namely, the position is in the horizontal range of 14.5 degrees to 27.5 degrees and the vertical range of-3 degrees to 7 degrees. Determining the angular position is shown in fig. 7.

And then the base station issues and measures the wide-beam ULDCI, the UE analyzes the ULDCI to acquire the time for measuring the CSIRS and the time for measuring and reporting, and the UE measures the wide-beam CSIRS according to the ULDCI indication and reports the RSRP. (this process is referred to as the P3 process). As indicated in table 3, the RSRP value of the wide beam 5 is 80.

Table 3:

after receiving the effective P3 measurement report, the base station issues ULDCI for measuring 5 narrow beams adjacent to the wide beam or for measuring refined beams, UE analyzes the moment when the ULDCI obtains the CSIRS and the time of measurement report, UE selects the best 2 narrow beams and reports 2 RSRPs, the base station stores the narrow beam corresponding to the maximum RSRP in the measurement report as nBeamldInUse [0], and records nBeamRsrpInUse [0 ]. Another smaller reported value is also recorded by location in a table that records in sequence [0: itself ], [1: up ], [ 2: lower ], [3: left ], [4: right ].

Narrow beam angular positioning:

as shown in table 4, the optimal narrow beam ID is 33, the horizontal angle is 21 °, and the horizontal bandwidth is 13 °; the vertical angle is 5 degrees, and the vertical bandwidth is 6 degrees. Namely, the position is between 14.5 and 27.5 degrees horizontally and between 2 and 8 degrees vertically. And the base station MAC module reports the finally determined beam ID 33 to the base station positioning module. The base station positioning module determines the UE angle position as follows: i.e., at a position of 14.5 deg. to 27.5 deg. horizontally and 2 deg. to 8 deg. vertically, as shown in fig. 8.

Table 4:

refined beam angle positioning:

another case is shown in table 5, where the best refinement beam ID is 34, the horizontal angle is 28 °, the horizontal bandwidth is 14 °; the vertical angle is 5 degrees, and the vertical bandwidth is 6 degrees. Namely, the position is in the horizontal 21-35 degrees and the vertical 2-8 degrees.

Table 5:

and the base station MAC module reports the finally determined beam ID 34 to the base station positioning module. The base station positioning module determines the UE angle position as follows: namely, the position is in the horizontal 21-35 degrees and the vertical 2-8 degrees. As shown in fig. 9.

Determining UE distance positioning information:

in the 5G UE random access, the gNB calculates an initial Timing Advance (TA) amount by detecting an actually received preamble time. Such as: TA is 10, then N _ TA is 10 16Ts, characterized by a distance of 160 x 0.61m 97.6m, as shown in fig. 10.

Single UE mobile location tracking:

positioning position angle tracking and beam maintenance:

after the UE accesses, in the process of random access, the base station will periodically send the P-CSIRS configuration information and the configuration information reported by measurement to the UE through RRC Setup (MSG4) message.

The P2 process beam switching, UE positioning angle location updating.

The base station periodically sends down measurements using 5 narrow beams adjacent to the wide beam or refines the beam measurement configuration (P2 process). The UE performs the P2 procedure to make narrow beam or refined beam measurements. This process (P2) may trigger a beam switch, a location angle location update of the UE.

P2 narrow beam switching causes an angular position update.

The UE receives the P2 measurement report, as shown in table 6.

Table 6:

33 and 48 are narrow beams added to the wide beam 5 and both the table beam and the angular position are updated. As shown in Table 7, the positioning angle positions were updated from H: 14.5-27.5V: 2-7 to H: 14.5-27.5V: 7-13 as shown in FIG. 11.

Table 7:

p2 wide and narrow beam switching causes an angular position update.

The results of the received P2 measurements are shown in table 8.

Table 8:

because beam 35 does not use wide beam 5, a wide beam switch is initiated at this point, from wide beam 5 to wide beam 6, the table is updated, triggering wide beam 6P 3 measurements, updating the value of beam 6 Rsrp, as shown in table 9.

Table 9:

the base station MAC module informs the UE through the MACCE, and the UE replaces the above InUse value with the following ToSwitch value after responding to the ACK. And updating the UE angle positioning information. The H is 21-35 degrees V and 2-8 degrees are updated to be 28-44 degrees V and 2-11 degrees as shown in figure 12.

The P3 process beam switching, the UE location angle position does not need to be updated.

The base station side periodically triggers (P3 procedure) measurements, when nbeamalidinuse [0] is the refined beam, to measure P3 for 2 wide beams. At this point, 2 RSRPs are received and 2 wide beams are maintained. When wBeamRsrpNgb > wBeamRsrpInUse + threshold, the handover is triggered. Switch from wbeamidusee to wBeamIdNgb as shown in table 10.

Table 10:

and the base station MAC module informs the UE to switch the wide beam through the MAC CE, and replaces the InUse value with the ToSwitch value of the table after receiving the ACK response of the UE. Because the refined beam of the actual angular position positioning of the UE is not changed, the angular position information of the UE does not need to be updated. As shown in table 11.

Table 11:

the P1 process beam switching, UE positioning angle location updating.

And the UE measures 8 wide beams according to the configuration information and reports two best wide beams RSRP and ID through PUCCH CSI. (P1 process).

And when the wBeamRsrpNgb < wBeamRsrpInUse plus the corresponding threshold, switching to the optimal beam reported in the process of P1. The current and neighboring wide beam RSRP values are shown in table 12. Table 13 shows the optimum beam RSRP values in the P1 procedure.

Table 12:

table 13:

index	wBeamld	wBeamRsrp	Count
				0	0	82	0
1	2	80	1

the optimal beam 0 in the P1 process is selected, and then P3 and P2 reports of beam 0 are triggered once. As shown in table 14. The positioning angle position is updated from H21-35V 2-8 to H65.5-44.5V 2-7 as shown in figure 13.

Table 14:

determining distance positioning information during UE movement:

and the base station measures the SRS/DMRS signals in the uplink transmission of the corresponding UE and determines the TA value of the UE. And continuously updating the distance information positioned by the UE by adding the accumulated continuously updated TA values to the stored initial TA values.

UE radar: displaying the real-time positions of a plurality of UEs in a 5G millimeter wave coverage area; and (5) the communication hot spot area is searched out.

When a plurality of UEs in a 5G millimeter wave coverage area are accessed, the distance between the position of the UE and the position of the base station antenna is converted into Longitude (Latitude), Latitude (Longitude) and altitude (elevation) through the angle between the position of the UE and the position of the base station antenna, the Longitude (Latitude), the Latitude (Longitude) and the altitude (elevation) are reported to a core network through User Location Information, the core network reports graph display monitoring software, the graph real-time position display of a plurality of UE radars is realized, and the accurate area of a communication hotspot is searched.

Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.

In this embodiment, a positioning apparatus of a terminal device is further provided, where the apparatus is used to implement the foregoing embodiments and preferred embodiments, and details are not repeated for what has been described. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

Fig. 14 is a block diagram of a positioning apparatus of a terminal device according to an embodiment of the present invention, and as shown in fig. 14, the apparatus includes: a first determination module 1402, a second determination module 1404, a third determination module 1406, and a location module 1408, the apparatus described below:

a first determining module 1402, configured to determine a first angle of the terminal device relative to the base station from a beam accessed by the terminal device;

a second determining module 1404, configured to determine a TA value of a timing advance when the terminal device accesses a beam;

a third determining module 1406, configured to determine, based on the distance corresponding to the TA value, the first distance of the terminal device relative to the base station;

a positioning module 1408 for positioning the terminal device with the first angle and the first distance.

In an alternative embodiment, the first angle of the terminal device relative to the base station is determined from the beam accessed by the terminal device by:

s2, receiving a first RSRP value sent by the terminal equipment;

In an optional embodiment, after receiving the first RSRP value sent by the terminal device, the apparatus is further configured to:

s2, receiving a second RSRP value sent by the terminal equipment;

In an optional embodiment, the first angle of the terminal device relative to the base station is determined based on the second RSRP value by:

s1, determining the ID of the first narrow beam from the second RSRP value;

In an optional embodiment, before determining the first angle of the terminal device with respect to the base station based on the first RSRP value, the apparatus is further configured to:

Optionally, before the terminal device is powered on for Access, each terminal device scans 8 SSBs in directions 0 to 7 issued by the base station, determines a best transmit beam of the base station for the terminal device according to the best receive direction, and then transmits MSG1 on a time-frequency resource of a Physical Random Access Channel (PRACH) corresponding to the beam. The later access flows (MSG1, 2, 3, 4) all use this wide beam. Media Access Control (MAC) and Random Access Control (RAC) in the base station are judged through the received MSG1, different time-frequency resources used by MSG1 sent by different wide-beam terminal devices are different, and a wide-beam ID used in the Access process is obtained through the PRACH time-frequency resources used by the terminal devices. The base station MAC access processing module RAC reports the wide BEAM ID used in the UE access process to the BEAM module, the BEAM module stores as wBeamIdInUse, and reports the wide BEAM ID to the base station positioning processing module. For example, if the first wide beam ID is 5, then the horizontal angle is 21 °, and the horizontal bandwidth is 13 °; the vertical angle is 2 degrees, and the vertical bandwidth is 10 degrees. The position of the terminal equipment is 14.5-27.5 degrees horizontally and-3-7 degrees vertically.

In an optional embodiment, after determining the first angle of the terminal device with respect to the base station from the beam accessed by the terminal device, the apparatus is further configured to:

In an optional embodiment, before the sending of the fourth measurement request to the terminal device periodically through the MAC, the apparatus is further configured to:

In an optional embodiment, after determining the angle corresponding to the second wide beam as the third angle of the terminal device relative to the base station, the apparatus is further configured to:

In an optional embodiment, a timing advance TA value when the terminal device accesses a beam is determined by the following method:

In an optional embodiment, the distance corresponding to the TA value is determined by the following method, and the first distance of the terminal device with respect to the base station is obtained:

In an alternative embodiment, the terminal device is located with the first angle and the first distance by:

s1, determining the coordinate position of the terminal equipment by using the first angle and the first distance, wherein the coordinate position comprises longitude, latitude and altitude of the terminal equipment after the terminal equipment is located and converted from the angle position and the distance position;

and S2, positioning the terminal equipment by using the coordinate position.

In an alternative embodiment, after determining the coordinate position of the terminal device using the first angle and the first distance, the apparatus is further configured to:

It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in different processors in any combination.

Embodiments of the present invention also provide a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the above method embodiments when executed.

Alternatively, in the present embodiment, the storage medium may be configured to store a computer program for executing the above steps.

Optionally, in this embodiment, the storage medium may include, but is not limited to: various media capable of storing computer programs, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.

Embodiments of the present invention also provide an electronic device comprising a memory having a computer program stored therein and a processor arranged to run the computer program to perform the steps of any of the above method embodiments.

Optionally, the electronic apparatus may further include a transmission device and an input/output device, wherein the transmission device is connected to the processor, and the input/output device is connected to the processor.

Alternatively, in this embodiment, the processor may be configured to execute the above steps through a computer program.

Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.

It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for positioning a terminal device, comprising:

determining a first angle of a terminal device relative to a base station from a beam accessed by the terminal device;

determining a Timing Advance (TA) value when the terminal equipment accesses the wave beam;

determining a first distance of the terminal equipment relative to the base station based on the distance corresponding to the TA value;

and positioning the terminal equipment by using the first angle and the first distance.

2. The method of claim 1, wherein determining the first angle of the terminal device relative to the base station from a beam accessed by the terminal device comprises:

sending a first measurement request to the terminal device, wherein the first measurement request is used for requesting to acquire a first Reference Signal Received Power (RSRP) value of a first wide beam accessed by the terminal device;

receiving the first RSRP value sent by the terminal equipment;

determining the first angle of the terminal device relative to the base station based on the first RSRP value.

3. The method of claim 2, wherein after receiving the first RSRP value sent by the terminal device, the method further comprises:

transmitting a second measurement request to the terminal device, wherein the second measurement request is used for requesting a second RSRP value of a first narrow beam accessed by the terminal device, and the first narrow beam is adjacent to the first wide beam;

receiving the second RSRP value sent by the terminal equipment;

determining the first angle of the terminal device relative to the base station based on the second RSRP value.

4. The method of claim 3, wherein determining the first angle of the terminal device relative to the base station based on the second RSRP value comprises:

determining an ID of the first narrow beam from the second RSRP value;

determining a horizontal angle of the terminal device relative to the base station and a vertical angle of the terminal device relative to the base station using the ID of the first narrow beam;

determining the horizontal angle and the vertical angle as the first angle of the terminal device relative to the base station.

5. The method of claim 1, wherein prior to determining the first angle of the terminal device relative to the base station based on the first RSRP value, the method further comprises:

determining a wide beam identification ID from a signaling message MSG sent by the terminal equipment;

and determining the wide beam corresponding to the wide beam identification ID as a first wide beam accessed by the terminal equipment.

6. The method of claim 1, wherein after determining the first angle of the terminal device relative to the base station from the beam accessed by the terminal device, the method further comprises:

periodically transmitting a third measurement request to the terminal device through a Media Access Control (MAC), wherein the third measurement request is used for requesting to measure signals of a second narrow beam adjacent to the narrow beam accessed by the terminal device;

receiving a first measurement report sent by the terminal device, wherein the first measurement report includes a signal of the second narrow beam;

instructing the terminal device to switch to the second narrow beam for access if the signal of the second narrow beam is larger than the signal of the narrow beam accessed by the terminal device;

and determining the angle corresponding to the second narrow beam as a second angle of the terminal equipment relative to the base station.

7. The method of claim 6, wherein prior to periodically sending the third measurement request to the terminal device via the MAC, the method further comprises:

sending a fourth measurement request to the terminal device through a Radio Resource Control (RRC), wherein the fourth measurement request is used for requesting to measure an access configuration of the terminal device, and the access configuration is used for triggering the fourth measurement request to be sent to the terminal device.

8. The method of claim 1, wherein after determining the first angle of the terminal device relative to the base station from the beam accessed by the terminal device, the method further comprises:

periodically transmitting a fifth measurement request to the terminal device through a MAC, wherein the fifth measurement request is used for requesting to measure signals of a second wide beam adjacent to the wide beam accessed by the terminal device;

receiving a second measurement report sent by the terminal device, wherein the second measurement report includes the second wide-beam signal;

instructing the terminal device to switch to the second wide beam for access if the signal of the second wide beam is larger than the signal of the wide beam accessed by the terminal device;

and determining the angle corresponding to the second wide beam as a third angle of the terminal device relative to the base station.

9. The method of claim 8, wherein after determining the angle corresponding to the second wide beam as the third angle of the terminal device relative to the base station, the method further comprises:

periodically sending a sixth measurement request to the terminal device through the MAC, wherein the sixth measurement request is used for requesting to measure signals of all wide beams corresponding to the terminal device;

instructing the terminal device to hop into a third wide beam whose signal is greater than the second wide beam if there is a greater than second wide beam signal in the all wide beam signals;

determining an angle corresponding to the third wide beam as a fourth angle of the terminal device relative to the base station;

and continuing to measure the narrow beam accessed by the terminal device in the third wide beam.

10. The method of claim 1, wherein determining the TA value of the timing advance when the terminal device accesses the beam comprises:

determining an initial TA value of the terminal equipment from the received time of the random access preamble sent by the terminal equipment;

measuring a channel Sounding Reference Signal (SRS) or a demodulation reference signal (DMRS) in uplink transmission of the terminal equipment;

determining the current TA value of the terminal equipment from the SRS or the DMRS;

and accumulating the initial TA value and the current TA value to obtain the TA value.

11. The method of claim 1, wherein determining a distance corresponding to the TA value, and wherein obtaining the first distance of the terminal device relative to the base station comprises:

determining the uplink sending time sent by the terminal equipment on the wave beam by utilizing the corresponding relation between the TA value and the uplink sending time;

and determining the distance represented by the uplink transmission time as the first distance.

12. The method of claim 1, wherein locating the terminal device using the first angle and the first distance comprises:

determining a coordinate position of the terminal equipment by using the first angle and the first distance, wherein the coordinate position comprises longitude, latitude and altitude of the terminal equipment after the terminal equipment is located and converted from an angle position and a distance position;

and positioning the terminal equipment by utilizing the coordinate position.

13. The method of claim 12, wherein after determining the coordinate location of the terminal device using the first angle and the first distance, the method further comprises:

and sending the longitude, the latitude and the altitude of the terminal equipment to a core network to indicate the core network to determine a communication hotspot area from the longitude, the latitude and the altitude of the terminal equipment.

14. A positioning apparatus for a terminal device, comprising:

the device comprises a first determining module, a second determining module and a third determining module, wherein the first determining module is used for determining a first angle of a terminal device relative to a base station from a beam accessed by the terminal device;

a second determining module, configured to determine a TA value of a timing advance when the terminal device accesses the beam;

a third determining module, configured to determine, based on the distance corresponding to the TA value, a first distance of the terminal device with respect to the base station;

and the positioning module is used for positioning the terminal equipment by utilizing the first angle and the first distance.

15. A storage medium, in which a computer program is stored, wherein the computer program is arranged to perform the method of any of claims 1 to 13 when executed.

16. An electronic device comprising a memory and a processor, wherein the memory has stored therein a computer program, and wherein the processor is arranged to execute the computer program to perform the method of any of claims 1 to 13.