User equipment, electronic equipment, method and storage medium in wireless communication system

Abstract

The present disclosure relates to user equipment, electronic devices, methods and storage media in a wireless communication system. According to the user equipment in the wireless communication system of the present disclosure, one or more processing circuits are configured to perform the following operations: obtaining a downlink signal from an electronic device in the wireless communication system; and estimating an angle of arrival AOA of the downlink signal, wherein at least the AOA and the position of the electronic device are used to estimate the position of the user equipment. Using the user equipment, electronic device, method and storage medium according to the present disclosure, the AOA of the downlink signal can be estimated when the user equipment is in an idle or initial access state, and the AOA can be used to estimate the position of the user equipment, thereby solving the problem that the user equipment cannot be positioned in an idle state or the like.

Description

[0001] This application claims the priority of the Chinese patent application filed with the China Patent Office on May 17, 2018, with application number 201810474674.3 and invention name “User equipment, electronic equipment, method and storage medium in wireless communication system”, the entire contents of which are incorporated by reference in this application. Technical Field

[0002] The present disclosure relates to the technical field of wireless communications, and in particular to a user equipment, an electronic device, a method for performing wireless communications in a wireless communication system, and a computer-readable storage medium. Background Art

[0003] At present, there are many cellular-based positioning technologies supported by the fourth-generation mobile communication system (4G), including OTDOA (Observed Time Difference Of Arrival) and AOA (Angle of Arrival) + TA (Timing Advanced). OTDOA sends positioning pilot signals through the downlink channel, and then measures the time difference between the pilot signals of each base station reaching the UE (User Equipment) to estimate the position of the UE. AOA+TA mainly estimates the position of the UE by measuring the AOA and arrival time of the uplink signal. The existing technology must first establish an RRC (Radio Resource Control) connection, so the position of the UE cannot be estimated in the idle (RRC Idle) or initial access state.

[0004] In order to support low-power large connections, the fifth-generation mobile communication system (5G) introduces a new RRC state, namely RRC Connected Inactive, based on the original connected state (RRC Connected) and idle state (RRC Idle). When the UE is in the idle state, it can query the paging channel to find out whether the network needs to establish a connection with it. Since the existing OTDOA and AOA+TA must first establish an RRC connection before positioning, the UE cannot estimate its own position when it is idle. In the Inactive state, although the UE and the network maintain an RRC connection, most of the wireless resources are released to save power, and only some control information connections are maintained. In this case, if the existing positioning technology is to be used, it is also necessary to return to the RRC connected state. Therefore, the existing positioning scheme cannot be applied in the Inactive state.

[0005] Therefore, it is necessary to propose a technical solution to estimate the position of the UE when the UE is in an idle or initial access state. Summary of the invention

[0006] This section provides a general summary of the disclosure, and is not a comprehensive disclosure of its full scope or all of its features.

[0007] The present disclosure aims to provide a user equipment, an electronic device, a method for wireless communication in a wireless communication system, and a computer-readable storage medium, so that the position of the user equipment can be estimated when the user equipment is in an idle or initial access state.

[0008] According to one aspect of the present disclosure, a user equipment in a wireless communication system is provided, comprising: one or more processing circuits, wherein the processing circuits are configured to perform the following operations: acquiring a downlink signal from an electronic device in the wireless communication system; and estimating an angle of arrival AOA of the downlink signal, wherein at least the AOA and the position of the electronic device are used to estimate the position of the user equipment.

[0009] According to another aspect of the present disclosure, an electronic device in a wireless communication system is provided, comprising: a transceiver; and one or more processing circuits, wherein the processing circuits are configured to perform the following operations: enable the transceiver to send a downlink signal so that a user equipment in the wireless communication system estimates an angle of arrival AOA of the downlink signal, wherein at least the AOA and the position of the electronic device are used to estimate the position of the user equipment.

[0010] According to another aspect of the present disclosure, a method for performing wireless communication in a wireless communication system is provided, comprising: acquiring a downlink signal from an electronic device in the wireless communication system; and estimating an angle of arrival AOA of the downlink signal, wherein at least the AOA and a position of the electronic device are used to estimate a position of a user equipment.

[0011] According to another aspect of the present disclosure, a method for performing wireless communication in a wireless communication system is provided, comprising: sending a downlink signal through an electronic device in the wireless communication system so that a user equipment in the wireless communication system estimates an angle of arrival AOA of the downlink signal, wherein at least the AOA and a position of the electronic device are used to estimate the position of the user equipment.

[0012] According to another aspect of the present disclosure, a computer-readable storage medium is provided, comprising executable computer instructions, which, when executed by a computer, cause the computer to perform the method according to the present disclosure.

[0013] By using the user equipment, electronic device, method for wireless communication in a wireless communication system and computer-readable storage medium according to the present disclosure, the angle of arrival AOA of the downlink signal can be estimated when the user equipment is in an idle or initial access state, and the AOA can be used to estimate the position of the user equipment, thereby solving the problem that the user equipment cannot be positioned in an idle state or the like.

[0014] Further areas of applicability will become apparent from the description provided herein.The description and specific examples in this summary are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure. In the drawings:

[0016] Figure 1 is a schematic diagram illustrating the OTDOA (Observed Time Difference Of Arrival) positioning principle known to the inventor;

[0017] Figure 2 It is a schematic diagram illustrating the AOA (Angle of Arrival) + TA (Timing Advanced) positioning principle known to the inventor;

[0018] Figure 3 is a schematic diagram illustrating a state transition of a fifth generation mobile communication system (5G);

[0019] Figure 4 is a signaling diagram illustrating a contention-existing RRC (Radio Resource Control) establishment process;

[0020] Figure 5 is a block diagram illustrating a structure of a user equipment in a wireless communication system according to an embodiment of the present disclosure;

[0021] Figure 6 It is a diagram illustrating the definition of AOA (Angle of Arrival);

[0022] Figure 7 is a schematic diagram illustrating the definition of horizontal AOA;

[0023] Figure 8 is a schematic diagram illustrating the definition of vertical AOA;

[0024] Fig. 9is a schematic diagram illustrating an example of a synchronization signal block used in an embodiment according to the present disclosure;

[0025] Fig.10 is a signaling diagram illustrating single base station RRC connection-free positioning according to an embodiment of the present disclosure;

[0026] Fig.11 is a schematic diagram illustrating single base station positioning without RRC connection according to an embodiment of the present disclosure;

[0027] Fig.12 is a signaling diagram illustrating multi-base station RRC connection-free positioning according to an embodiment of the present disclosure;

[0028] Fig.13 is a schematic diagram illustrating multi-base station positioning without RRC connection according to an embodiment of the present disclosure;

[0029] Fig.14 is a signaling diagram illustrating multiple base stations with RRC connection positioning according to an embodiment of the present disclosure;

[0030] Fig.15 is a signaling diagram illustrating establishment of an RRC connection location according to an embodiment of the present disclosure;

[0031] Fig.16 is a block diagram illustrating a structure of an electronic device in a wireless communication system according to another embodiment of the present disclosure;

[0032] Fig.17 is a flow chart illustrating a wireless communication method according to an embodiment of the present disclosure;

[0033] Fig.18 is a block diagram showing a first example of a schematic configuration of an eNB (evolution Node Base Station) or a gNB (a base station in a 5th generation communication system) applicable to the present disclosure;

[0034] Fig.19 is a block diagram showing a second example of a schematic configuration of an eNB or gNB applicable to the present disclosure;

[0035] Fig. 20 is a block diagram showing an example of a schematic configuration of a smartphone applicable to the present disclosure; and

[0036] Fig.21 is a block diagram showing an example of a schematic configuration of a car navigation device applicable to the present disclosure.

[0037] Although the present disclosure is susceptible to various modifications and alternative forms, specific embodiments thereof have been shown as examples in the drawings and are described in detail herein. It should be understood, however, that the description of specific embodiments herein is not intended to limit the present disclosure to the specific forms disclosed, but rather, the present disclosure is intended to cover all modifications, equivalents, and alternatives that fall within the spirit and scope of the present disclosure. It should be noted that throughout the several drawings, corresponding reference numerals indicate corresponding parts. DETAILED DESCRIPTION

[0038] Examples of the present disclosure will now be described more fully with reference to the accompanying drawings.The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses.

[0039] Example embodiments are provided so that the disclosure will be exhaustive and its scope will be fully conveyed to those skilled in the art. Numerous specific details such as examples of specific components, devices and methods are set forth to provide a detailed understanding of the embodiments of the present disclosure. It will be apparent to those skilled in the art that the example embodiments may be implemented in many different forms without the use of specific details, none of which should be construed as limiting the scope of the present disclosure. In certain example embodiments, well-known processes, well-known structures and well-known techniques are not described in detail.

[0040] The UE (User Equipment) involved in the present disclosure includes but is not limited to terminals with wireless communication functions such as mobile terminals, computers, and vehicle-mounted equipment. Further, depending on the specific functions described, the UE involved in the present disclosure may also be the UE itself or a component thereof such as a chip. In addition, similarly, the base station involved in the present disclosure may be, for example, an eNB (evolution Node Base Station), or a gNB (a base station in a fifth generation communication system), or a component such as a chip in an eNB or a gNB.

[0041] Figure 1 The invention shows the OTDOA (Observed Time Difference Of Arrival) positioning principle known to the inventors. OTDOA sends positioning pilot signals through a downlink channel, and then measures the time difference between the pilot signals of each base station arriving at the UE to estimate the position of the UE.

[0042] like Figure 1As shown in the figure, three base stations (eNB 1, eNB 2, eNB 3) send positioning pilot signals in the downlink channel respectively, and the UE measures the arrival times τ1, τ2, and τ3. Since the absolute time between different base stations is usually offset by less than 20ns, OTDOA uses the arrival time difference method. The UE uses eNB 1 as the reference base station, calculates the arrival time differences τ2-τ1 and τ3-τ1, and feeds them back to eNB 1. The positioning server can estimate the UE's position based on the arrival time difference and the positions of the three eNBs.

[0043] Figure 2 The figure shows the AOA (Angle of Arrival) + TA (Timing Advanced) positioning principle known to the inventors.

[0044] AOA+TA estimates the UE's position mainly by measuring the AOA and arrival time of the uplink signal. According to 3GPP TS38.215, AOA is defined as the angle between the uplink signal arrival direction and the base station reference direction. The reference direction is due north of the base station's geographic location. The counterclockwise angle is positive and the clockwise angle is negative. The angle range of AOA is 0 to 360 degrees with a resolution of 0.5 degrees. Figure 2 As shown, the base station (eNB) estimates the AOA of the arriving signal through the uplink channel, calculates the arrival time of the signal and its corresponding distance through the TA instruction in the synchronization process, and finally estimates the position of the UE according to the AOA and the distance.

[0045] In addition, regarding the cellular-based positioning technology supported by the fourth-generation mobile communication system (4G), the inventors also know that there are the following two technologies: UTOA (Uplink Time Of Arrival) \UTDOA (Uplink Time Difference Of Arrival) and A-GPS (Assistant Global Positioning System).

[0046] The UTOA positioning method is that the base station measures the arrival time of the mobile terminal signal. This method requires at least three base stations to participate in the measurement, and each base station adds an LMU (Location Measuring Unit) to measure the arrival time of the positioning signal sent by the terminal. Since the geographical location of each base station is known, the location of the mobile terminal can be calculated using spherical trigonometry. UTDOA measures the transmission time difference of the signal emitted by the mobile terminal to different base stations, rather than simply the transmission time. UTOA positioning requires precise synchronization between the terminal and the base stations involved in the positioning, while UTDOA usually only requires synchronization between the base stations involved in the positioning. In addition, these two types of positioning also require the installation of LMUs on all base stations, so the cost is relatively high.

[0047] A-GPS is the abbreviation of network-assisted GPS (Global Positioning System) positioning. This method requires that both the network and the mobile station can receive GPS signals. The network provides auxiliary GPS information to the mobile station, including auxiliary data for GPS signal capture and station-satellite pseudo-range measurement between GPS satellites and receivers (such as GPS capture auxiliary data, GPS positioning auxiliary information, GPS sensitivity auxiliary information, GPS satellite working conditions, etc.), as well as auxiliary information for mobile station position solution, such as GPS satellite ephemeris, GPS navigation message, GPS satellite almanac, etc. With this information, the mobile station can quickly capture satellites and obtain observation data, and then send the position measurement estimation information to the network-side positioning server, which will ultimately calculate the location of the mobile station. Since the position calculation is completed on the network side, the complexity of the mobile station to achieve GPS satellite signal capture and reception is greatly reduced, and power consumption can be saved.

[0048] In an open environment, such as in the suburbs or rural areas, multipath and obstruction can be ignored, and the positioning accuracy of A-GPS can reach about 10 meters or even better. If the mobile station is in an urban environment, there is no obstruction and the multipath effect is less affected, the positioning accuracy will be about 30 to 70 meters. If the receiving environment is located indoors or in other areas with severe multipath and obstruction, it is difficult for the mobile station to capture enough satellite signals, and A-GPS cannot complete the capture and positioning, which is its biggest limitation. The response time of the A-GPS positioning method is slightly longer. In the case of cold start, the A-GPS positioning response time is 10 to 30 seconds; under normal working conditions, the response time is about 3 to 10 seconds. The advantages of A-GPS are that there are few changes on the network side, the network does not need to add other equipment, the investment is small, and the positioning accuracy is high (theoretically up to 5 to 10 meters). The disadvantage is that the mobile station needs corresponding software and hardware support, which increases the cost and power consumption of the mobile station.

[0049] In order to support low-power large connections, the fifth-generation mobile communication system (5G) introduces a new RRC (Radio Resource Control) state, namely RRC Connected Inactive, based on the original connected state (RRC Connected) and idle state (RRC Idle). Figure 3 A state transition diagram for 5G is shown.

[0050] When the UE is in the idle state, it can query the paging channel to find out whether the network needs to establish a connection with it. Since the existing positioning method must first establish an RRC connection before positioning, the UE cannot estimate its own position when it is in the idle state. In the Inactive state, although the UE and the network maintain an RRC connection, most of the wireless resources are released in order to save power, and only some control information connections are maintained. In this case, if the existing positioning technology is to be used, it is also necessary to return to the RRC connection state. Therefore, the existing positioning solution cannot be applied in the Inactive state.

[0051] Figure 4 The process of UE initially accessing the system and establishing an RRC connection in a contention state is given. After downlink synchronization, the UE first reads the basic system information on the NR-PBCH (New Radio-Physical Broadcast Channel) and the configuration information of the NR-PDCCH (New Radio-Physical Downlink Control Channel), and then reads the configuration information of the NR-PRACH (New Radio-Physical Random Access Channel) on the NR-PDSCH (New Radio-Physical Downlink Shared Channel) through the NR-PDCCH. According to the requirements of this information, the UE randomly selects an access code at the corresponding time and frequency to send an NR-PRACH signal, and sends an RRC connection request after receiving a response from the base station (gNB or TRP). After the connection is established, positioning-related operations must be started, and the UE position can be estimated only after measurement feedback. It can be seen that when the UE is in the Idle and Inactive states, if the existing positioning technology is used, the positioning delay will be significantly increased and a large amount of signaling resources will be consumed.

[0052] In addition, when the UE is in some special communication states, such as D2D (Device-to-Device) or V2X (Vehicle to Everything), the UE and the base station only maintain a control channel connection, and data is transmitted independently between UEs. In this case, if the existing positioning technology is used, the positioning pilot cannot be sent and must return to the RRC connection state connected to the base station.

[0053] In order to solve at least one of the above-mentioned problems, a technical solution according to the present disclosure is proposed. Figure 5 The structure of UE 500 in a wireless communication system according to an embodiment of the present disclosure is shown.

[0054] like Figure 5 As shown, UE 500 may include a processing circuit 510. It should be noted that UE 500 may include one processing circuit 510 or multiple processing circuits 510. In addition, UE 500 may also include a communication unit 520 and the like.

[0055] Furthermore, the processing circuit 510 may include various discrete functional units to perform various functions and / or operations. It should be noted that these functional units may be physical entities or logical entities, and units with different names may be implemented by the same physical entity.

[0056] For example, Figure 5 As shown, the processing circuit 510 may include an acquisition unit 511 and an estimation unit 512 .

[0057] The acquisition unit 511 may acquire a downlink signal from an electronic device in the wireless communication system.

[0058] The estimation unit 512 may estimate the AOA of the downlink signal. Here, at least the AOA of the downlink signal and the position of the electronic device that sends the downlink signal may be used to estimate the position of the UE 500.

[0059] It should be noted that, in the embodiments of the present disclosure, when estimating the position of the UE, it is not necessary to pre-establish an uplink between the UE and the eNB. In addition, the downlink signal used to estimate the AOA does not need to include a dedicated PRS (Positioning Reference Signal).

[0060] In order to increase the utilization of spectrum and power, the fifth-generation mobile communication system (5G) will adopt large-scale antenna technology at both the transmitting and receiving ends, so that the base station can form a transmit beam and the UE can estimate the AOA.

[0061] Using the UE 500 according to the embodiment of the present disclosure, the AOA of the downlink signal can be estimated when the UE 500 is in an idle or initial access state, and the AOA can be used to estimate the position of the UE 500, thereby solving the problem that the UE 500 cannot be located in an idle state.

[0062] According to a preferred embodiment of the present disclosure, the estimating unit 512 estimating the AOA may include at least one of the following: estimating the AOA in a first direction and estimating the AOA in a second direction.

[0063] Preferably, the AOA of the first direction may be a horizontal AOA, which indicates the angle between the projection of the arrival direction of the downlink signal on the horizontal plane and the horizontal reference direction. Further, the AOA of the second direction may be a vertical AOA, which indicates the angle between the projection of the arrival direction of the downlink signal on the vertical plane and the vertical reference direction.

[0064] Figure 6 shows an example of the definition of AOA according to an embodiment of the present disclosure, Figure 7 shows the definition of horizontal AOA according to an embodiment of the present disclosure, and Figure 8 The definition of vertical AOA according to an embodiment of the present disclosure is shown.

[0065] like Figure 6 and 7 As shown, the horizontal AOA (AOA in the figure Horizontal ) is defined as the angle between the direction of arrival of the downlink signal projected onto the horizontal plane and the reference direction. The reference direction may be, for example, due south at the UE's geographic location. The counterclockwise angle is positive, and the clockwise angle is negative. AOA Horizontal The angle range is 0 to 360 degrees, and the resolution can be, for example, 0.5 degrees. It should be noted that in addition to the south direction as the reference direction, the north or other horizontal plane directions can also be used as reference directions. In addition to the angular resolution of 0.5 degrees, other angles, such as 10 degrees, can also be used as the angular resolution.

[0066] like Figure 6 and 8 As shown, the vertical AOA (AOA in the figure Vertical ) is defined as the angle between the direction of arrival of the downlink signal projected onto the vertical plane and the reference direction. The reference direction can be, for example, the direction directly below the center of the earth at the UE's geographical location. The counterclockwise angle is positive and the clockwise angle is negative. AOA Vertical The angle range is 0 to 360 degrees, and the resolution can be, for example, 0.5 degrees. It should be noted that in addition to using the direction directly below the center of the earth as the reference direction, the direction directly above or in other vertical planes can also be used as the reference direction. In addition to the angular resolution of 0.5 degrees, other angles, such as 10 degrees, can also be used as the angular resolution.

[0067] According to a preferred embodiment of the present disclosure, the downlink signal acquired by the acquisition unit 511 may include, for example, an SSB (Synchronization Signal Block) or a CSI-RS (Channel State Information Reference Signal). The following description will be made using SSB as an example of a downlink signal.

[0068] Fig. 9 An example of SSB used in an embodiment of the present disclosure is shown. In the 5G NR system, in order to facilitate beam scanning, the synchronization channel and the broadcast channel are sent in a SSB manner. Fig. 9 As shown in the figure, when the subcarrier is 15kHz, NR-PBCH occupies 20 physical RBs (Resource Blocks) of the 1st and 3rd OFDM (Orthogonal Frequency Division Multiplexing) symbols of each time slot and 8 RBs of the 2nd OFDM symbol, NR-PSS (New Radio-Primary Synchronization Signal) and NR-SSS (New Radio-Secondary Synchronization Signal) occupy 127 subcarriers of the 0th and 2nd OFDM symbols of each time slot respectively.

[0069] The present disclosure is based on the AOA on the UE side. The UE can estimate the AOA of the downlink signal by measuring the SSB sent in the period, and locate it by reading the location of the base station. Since this process does not require the establishment of an RRC connection, it can work in both the Idle and Inactive states, solving the problems of time delay and a large amount of signaling overhead in the prior art. Table 1 lists the main differences between the solution of the present disclosure and the positioning method based on the base station AOA.

[0070] Table 1: Differences between the solution disclosed in this disclosure and the traditional AOA solution

[0071]

[0072]

[0073] It should be noted that in Table 1 above, if the solution of the present disclosure does not need to report to the base station, then there is no need to establish an RRC connection after positioning. The solution of the present disclosure is applicable with or without an RRC connection, and both the UE and the network can initiate a positioning request, as shown in Table 2.

[0074] Table 2. Initiation of positioning request

[0075]

[0076] When there is no RRC connection, according to the number of base stations involved in positioning, it can be divided into single base station without RRC connection positioning scenario and multiple base station without RRC connection positioning scenario. For the sake of simplicity, only horizontal plane positioning is considered below. In this case, AOA means AOA Horizontal The positioning process of the vertical plane is the same as that of the horizontal plane, so it will not be repeated here.

[0077] Fig.10 An example of single base station positioning without RRC connection according to an embodiment of the present disclosure is shown. In this scenario, the UE can only receive the signal of one base station (gNB or TRP), and the position is calculated by the UE in the state of no RRC connection.

[0078] like Fig.10 As shown, first, the gNB or TRP (Transmit / Receive port) sends SSB to the UE.

[0079] Next, the UE estimates the AOA of the downlink signal and the distance between the base station (gNB or TRP) and the UE using SSB.

[0080] After that, the UE reads the geographic location information of the base station (gNB or TRP) from the RMSI (Remaining Minimum System Information) or Other SI (Other System Information).

[0081] Finally, the UE estimates the UE's location using the AOA, distance, and geographic location information.

[0082] Below Fig.10 The relevant steps in are described in detail.

[0083] In the step where the UE estimates the AOA and distance of the downlink signal using SSB, the UE estimates the AOA of the downlink signal based on the SSB periodically sent by the base station (gNB or TRP). Assume that there are N antennas at the UE end, the antenna spacing is λ / 2, and λ is the wavelength of the carrier frequency. Ignoring noise, the received signal can be expressed as:

[0084]

[0085] Among them, y n (t) represents the received signal on the nth antenna (n=0, 1, ..., N-1), and r(t) represents the synchronization signal reaching the UE. In addition,

[0086] a(φ)=[1,e jπsin(φ) , ..., e jπ(N-1)sin(φ) ] T (2)

[0087] represents the response vector of the antenna array, and φ is the angle of arrival of the signal. Dividing the second element of y(t) by the first element yields:

[0088]

[0089] Then, the arrival angle φ can be calculated by estimating the phase angle of z. In order to improve the estimation accuracy, some advanced signal processing techniques can also be used, such as multiple signal classification (MUSIC) and rotationally invariant subspace (ESPRIT).

[0090] In addition, since the transmission power of SSB is predetermined and remains unchanged in the cell, the UE can estimate the distance between the UE and the base station (gNB or TRP) by the received power. Of course, the present disclosure does not exclude the use of other forms of estimation methods, such as the TOA (Time of Arrival) method.

[0091] The following describes in detail the specific method for UE to obtain the geographic location information of the base station (gNB or TRP).

[0092] In 5G, system information is obtained in a hierarchical manner. Basic cell configuration information is provided by PBCH (Physical Broadcast Channel), and shared channels provide more system information. Complete information can be obtained, for example, by following the steps below:

[0093] 1) The UE reads the PBCH that provides the basic cell configuration and finds the downlink control channel (which schedules the shared channel);

[0094] 2) The UE reads the minimum system information (RMSI) which provides scheduling information for all other system information blocks; and

[0095] 3) The UE reads other required system information (Other SI).

[0096] Therefore, the geographic location information of the base station (gNB or TRP) can be stored in RMSI or in Other SI, for example.

[0097] In addition to RMSI and Other SI, the present disclosure does not exclude the storage of geographic location information of the base station (gNB or TRP) in NR-PBCH. Another possibility is that the geographic location information of the base station (gNB or TRP) is transmitted in NR-PDSCH as Other SI requested by the user (On-demand).

[0098] In summary, the possible storage locations and reading methods of the base station (gNB or TRP) location information are shown in Table 3.

[0099] Table 3. Base station location information acquisition method

[0100]

[0101]

[0102] Regarding the form of the geographical location information of the base station (gNB or TRP), for example, absolute coordinates can be used, represented by longitude, latitude and height from the sea level; or relative coordinates can be used, with a reference object in the cell as the coordinate origin and the relative distance from it in the horizontal plane and the vertical plane as the position coordinate. In addition, the present disclosure does not exclude other forms of geographical location information, such as absolute coordinates for height and relative coordinates for position on the horizontal plane.

[0103] Fig.11 FIG. 2 shows a schematic diagram of single base station positioning without RRC connection according to an embodiment of the present disclosure. Fig.11 As shown, the UE can estimate the UE's location using the AOA, distance, and geographic location information of the base station.

[0104] According to a preferred embodiment of the present disclosure, the estimation unit 512 may estimate the distance between the electronic device and the UE 500 based on the downlink signal from the electronic device. Further, the estimation unit 512 may estimate the relative position of the UE 500 based on the estimated distance and the estimated AOA of the downlink signal. The relative position refers to the position of the UE 500 relative to the electronic device (i.e., the gNB or TRP).

[0105] According to a preferred embodiment of the present disclosure, electronic device geographic location information indicating the location of the electronic device may be sent by the electronic device to the UE 500. In this case, the estimation unit 512 may estimate the actual location of the UE 500 based on the distance, the AOA, and the location of the electronic device.

[0106] As mentioned above, in the technical solution according to the embodiment of the present disclosure, the UE may be disconnected from the electronic device that sends the downlink signal and be in an RRC idle state, or may be connected to the electronic device but be in an RRC inactive state.

[0107] The above describes a scenario where the UE can only receive signals from one base station (gNB or TRP). The following describes a scenario where the UE can receive signals from multiple base stations (gNB or TRP).

[0108] According to a preferred embodiment of the present disclosure, when receiving downlink signals of multiple electronic devices, the estimation unit 512 can estimate the AOA of the first electronic device among the multiple electronic devices, and can estimate the AOA of the second electronic device among the multiple electronic devices. Here, the AOA of the first electronic device, the AOA of the second electronic device, the position of the first electronic device, and the position of the second electronic device can be used to estimate the position of the UE 500.

[0109] Fig.12 An example of multi-base station positioning without RRC connection according to an embodiment of the present disclosure is shown. Fig.12 As shown, the UE can receive signals from multiple base stations (taking 2 base stations as an example), and the position is calculated by the UE in the absence of RRC connection.

[0110] Specifically, first, the UE estimates the AOA of the downlink signal of each base station using the SSB.

[0111] Next, the UE reads its geographical location information from, for example, the RMSI or Other SI of each base station.

[0112] After that, the UE can estimate the UE's location using the AOA and geographic location information.

[0113] In the step in which the UE estimates the AOA of each base station downlink signal using the SSB, the estimation method of the AOA of each base station downlink signal is similar to the scheme in the above-mentioned single base station non-RRC connection positioning method, and will not be repeated here.

[0114] It should be noted that in the multi-base station positioning method without RRC connection, it is not necessary to estimate the distance between the UE and the base station.

[0115] In the step where the UE reads its geographic location information from the RMSI or Other SI of each base station, the solution is similar to that in the single base station non-RRC connection positioning method, and will not be repeated here.

[0116] Fig.13 FIG. 2 shows a schematic diagram of multi-base station positioning without RRC connection according to an embodiment of the present disclosure. Fig.13As shown, the UE can estimate the location of the UE using the AOA and geographic location information of each base station.

[0117] In the technical solution according to the embodiment of the present disclosure, UE positioning can be completed by the UE or by the base station. The following describes the scenario in which the UE positioning is completed by the base station. When the UE positioning is completed by the base station, an RRC connection is generally required.

[0118] When there is an RRC connection, according to the order of positioning and establishing the RRC connection, it is divided into positioning after RRC connection establishment and establishing the RRC connection after positioning. For the sake of simplicity, only horizontal positioning is considered below. At this time, AOA means AOA Horizontal The positioning process of the vertical plane is similar to that of the horizontal plane and will not be repeated here.

[0119] Fig.14 An example of multi-base station RRC connection positioning according to an embodiment of the present disclosure is shown, which belongs to the scenario of positioning after RRC connection establishment. In this scenario, the UE is in the RRC connection state and can receive signals from multiple base stations (taking 2 base stations as an example). The UE feeds back the measurement information to the serving base station, and the serving base station calculates the UE position.

[0120] like Fig.14 As shown, first, the UE estimates the AOA and the distance to each base station using the SSB of each base station.

[0121] Next, the UE reports the AOA and distance of each base station to the serving base station.

[0122] After that, the serving base station estimates the location of the UE using the reported AOA and distance as well as the geographical location information of each base station.

[0123] In the step where the UE estimates the AOA and the distance to each base station using the SSB of each base station, the estimation method of the AOA of the downlink signal of each base station and the distance estimation process are similar to the scheme in the single base station positioning method without RRC connection.

[0124] In the step where the UE reports the AOA and distance of each base station to the serving base station, since there is an RRC connection state between the UE and the serving base station, the UE can report the measured AOA and distance of each base station to the serving base station through the uplink shared channel (NR-PUSCH).

[0125] In the step of estimating the location of the UE by using the reported AOA and distance and the geographical location information of each base station, the serving base station estimates the location of the UE by using the AOA and distance of each base station and the geographical location information known on the base station side. In the calculation process of positioning, advanced digital signal processing methods, such as the minimum mean square error (MMSE) algorithm, can be used to improve the estimation accuracy.

[0126] According to a preferred embodiment of the present disclosure, in a scenario where the UE can receive signals from multiple base stations (gNB or TRP), after the estimation unit 512 estimates the AOA of the first electronic device and the AOA of the second electronic device, the processing circuit 510 can cause the UE 500 to switch to the RRC connection state. Further, the processing circuit 510 can also send information about the AOA of the first electronic device and information about the AOA of the second electronic device to the serving base station of the UE 500, so that the serving base station estimates the location of the UE 500 based on the AOA of the first electronic device, the AOA of the second electronic device, the location of the first electronic device, and the location of the second electronic device. Here, the serving base station can be determined by the base station reported by the UE. The base station to which it reports is the serving base station. The first electronic device can usually be considered to be the serving base station.

[0127] Fig.15 An example of establishing RRC connection positioning according to an embodiment of the present disclosure is shown, which belongs to the scenario of establishing RRC connection after positioning. In this scenario, the UE is in an idle connection state and can receive signals from multiple base stations (taking 2 base stations as an example). The UE establishes an RRC connection with the serving base station and feeds back measurement information to the serving base station, which calculates the UE position.

[0128] like Fig.15 As shown, first, the UE estimates the AOA and the distance to each base station using the SSB of each base station.

[0129] Next, the UE establishes an RRC connection with the serving base station.

[0130] Next, the UE reports the AOA and distance of each base station to the serving base station.

[0131] After that, the serving base station estimates the location of the UE using the reported AOA and distance as well as the geographical location information of each base station.

[0132] In the step where the UE estimates the AOA and the distance to each base station using the SSB of each base station, the estimation method of the AOA of the downlink signal of each base station and the distance estimation process are similar to the scheme in the single base station positioning method without RRC connection.

[0133] In the step of establishing an RRC connection between the UE and the serving base station, as shown in FIG. Figure 4As shown in the figure, after synchronizing with the synchronization channel, the UE first reads the basic system information on the NR-PBCH and the configuration information of the NR-PDCCH, and then reads the configuration information of the NR-PRACH on the NR-PDSCH through the NR-PDCCH. According to the requirements of this information, the UE randomly selects the access code at the corresponding time and frequency to send the NR-PRACH signal, and sends the RRC connection request after receiving the response from the base station. After the serving base station agrees, the RRC connection establishment is completed.

[0134] In the step where the UE reports the AOA and distance of each base station to the serving base station, since an RRC connection state already exists between the UE and the serving base station, the UE can report the measured AOA and distance of each base station to the serving base station through the uplink shared channel (NR-PUSCH).

[0135] In the step of estimating the location of the UE by using the reported AOA and distance and the geographical location information of each base station, the serving base station estimates the location of the UE by using the AOA and distance of each base station and the geographical location information known on the base station side. In the calculation process of positioning, advanced digital signal processing methods, such as the minimum mean square error (MMSE) algorithm, can be used to improve the estimation accuracy.

[0136] It should be noted that, according to an embodiment of the present disclosure, UE 500 may also include a large-scale MIMO (Multiple-Input Multiple-Output) antenna array. In addition, the wireless communication system as described above may be a 5G new wireless NR system, and the electronic device as described above may be a base station or a TRP.

[0137] The solution according to the embodiment of the present disclosure can work in RRC Idle and Inactive states, can also work in RRC connected state, and can also work in special communication scenarios such as D2D. The solution according to the embodiment of the present disclosure can reduce positioning delay, does not require positioning pilot signals, and can also save a lot of signaling resources.

[0138] Next, combine Fig.16 16 is a diagram to describe an electronic device 1600 in a wireless communication system according to another embodiment of the present disclosure.

[0139] Fig.16 The structure of an electronic device 1600 in a wireless communication system according to another embodiment of the present disclosure is shown.

[0140] like Fig.16As shown, the electronic device 1600 may include a processing circuit 1610. It should be noted that the electronic device 1600 may include one processing circuit 1610 or multiple processing circuits 1610. In addition, the electronic device 1600 may also include a communication unit 1620 such as a transceiver.

[0141] As mentioned above, similarly, the processing circuit 1610 may also include various discrete functional units to perform various functions and / or operations. These functional units may be physical entities or logical entities, and units with different names may be implemented by the same physical entity.

[0142] The processing circuit 1610 may enable the communication unit 1620 to send a downlink signal so that the UE in the wireless communication system estimates the AOA of the downlink signal. Here, at least the AOA and the position of the electronic device 1600 may be used to estimate the position of the UE.

[0143] Preferably, the downlink signal may include SSB or CSI-RS.

[0144] Preferably, the processing circuit 1610 may enable the communication unit 1620 to send geographic location information indicating the location of the electronic device 1600 to the UE.

[0145] Preferably, the UE may be in an RRC idle state without being connected to the electronic device 1600 or may be in an RRC inactive state with being connected to the electronic device 1600. In this case, the processing circuit 1610 may establish an RRC connection with the UE, so that the communication unit 1620 receives the first AOA of the downlink signal of the electronic device 1600 and the second AOA of the downlink signal of another electronic device from the UE, and the position of the UE may be estimated based on the first AOA, the second AOA, the position of the electronic device 1600 and the position of the other electronic device.

[0146] Preferably, the UE may be in an RRC connected state. In this case, the processing circuit 1610 may enable the communication unit 1620 to receive a first AOA of a downlink signal of the electronic device 1600 and a second AOA of a downlink signal of another electronic device from the UE, and may estimate the position of the UE based on the first AOA, the second AOA, the position of the electronic device 1600, and the position of the other electronic device.

[0147] It should be noted that according to an embodiment of the present disclosure, the wireless communication system described above may be a 5G new wireless NR system, and the electronic device 1600 may be a base station or a TRP.

[0148] Next reference Fig.17 A method for performing wireless communication in a wireless communication system according to an embodiment of the present disclosure is described. Fig.17 A flow chart of a wireless communication method according to an embodiment of the present disclosure is shown.

[0149] like Fig.17 As shown, first, in step S1710, a downlink signal from an electronic device in a wireless communication system is acquired.

[0150] Then, in step S1720, the AOA of the downlink signal is estimated. Here, at least the AOA and the position of the electronic device can be used to estimate the position of the UE.

[0151] Preferably, the downlink signal may include SSB or CSI-RS.

[0152] Preferably, estimating the AOA may include at least one of the following: estimating the AOA in a first direction and estimating the AOA in a second direction.

[0153] Preferably, the AOA in the first direction may be a horizontal AOA, which indicates the angle between the projection of the arrival direction of the downlink signal on the horizontal plane and the horizontal reference direction, and the AOA in the second direction may be a vertical AOA, which indicates the angle between the projection of the arrival direction of the downlink signal on the vertical plane and the vertical reference direction.

[0154] Preferably, the method according to the embodiment of the present disclosure can also estimate the distance between the electronic device and the UE based on the downlink signal, and can estimate the relative position of the UE based on the distance and the AOA.

[0155] Preferably, the electronic device geographic location information indicating the location of the electronic device can be sent by the electronic device to the UE, and the method according to the embodiment of the present disclosure can also estimate the actual location of the UE based on the distance, AOA and the location of the electronic device.

[0156] Preferably, the UE may be in an RRC idle state without being connected to the electronic device, or may be in an RRC inactive state while being connected to the electronic device.

[0157] Preferably, when downlink signals of multiple electronic devices are received, the method according to an embodiment of the present disclosure can also estimate the AOA of a first electronic device among the multiple electronic devices, and can estimate the AOA of a second electronic device among the multiple electronic devices. Here, the AOA of the first electronic device, the AOA of the second electronic device, the position of the first electronic device, and the position of the second electronic device can be used to estimate the position of the UE.

[0158] Preferably, after estimating the AOA of the first electronic device and the AOA of the second electronic device, the method according to an embodiment of the present disclosure can also enable the UE to switch to an RRC connected state, and can send information about the AOA of the first electronic device and information about the AOA of the second electronic device to the UE's service base station, so that the service base station can estimate the UE's position based on the AOA of the first electronic device, the AOA of the second electronic device, the position of the first electronic device and the position of the second electronic device.

[0159] According to another embodiment of the present disclosure, a method for wireless communication in a wireless communication system is also provided, which may include: sending a downlink signal through an electronic device in the wireless communication system so that a UE in the wireless communication system estimates the AOA of the downlink signal. Here, at least the AOA and the position of the electronic device can be used to estimate the position of the UE.

[0160] Preferably, the downlink signal may include SSB or CSI-RS.

[0161] Preferably, the method according to the embodiment of the present disclosure may also send geographic location information indicating the location of the electronic device to the UE.

[0162] Preferably, the UE may be in an RRC idle state without being connected to the electronic device or may be in an RRC inactive state with being connected to the electronic device. In this case, the method according to an embodiment of the present disclosure may also establish an RRC connection with the UE, receive a first AOA of a downlink signal of the electronic device and a second AOA of a downlink signal of another electronic device from the UE, and estimate the position of the UE based on the first AOA, the second AOA, the position of the electronic device, and the position of the other electronic device.

[0163] Preferably, the UE may be in an RRC connected state. In this case, the method according to an embodiment of the present disclosure may also receive a first AOA of a downlink signal of an electronic device and a second AOA of a downlink signal of another electronic device from the UE, and may estimate the position of the UE based on the first AOA, the second AOA, the position of the electronic device, and the position of the other electronic device.

[0164] Various specific implementations of the above-mentioned steps of the method for performing wireless communication in a wireless communication system according to an embodiment of the present disclosure have been described in detail above and will not be repeated here.

[0165] In addition, it should be noted that according to another embodiment of the present disclosure, a computer-readable storage medium is also provided, which may include executable computer instructions. When the executable computer instructions are executed by a computer, the computer can execute the method described in the embodiment of the present disclosure.

[0166] The technology of the present disclosure can be applied to various products. For example, the base station mentioned in the present disclosure can be implemented as any type of evolved Node B (eNB), such as macro eNB and small eNB. Small eNB can be an eNB that covers a cell smaller than a macro cell, such as a pico eNB, a micro eNB, and a home (femto) eNB. Alternatively, the base station can be implemented as any other type of base station, such as a NodeB and a base transceiver station (BTS). The base station may include: a main body (also referred to as a base station device) configured to control wireless communications; and one or more remote radio heads (RRHs) arranged in a place different from the main body. In addition, the various types of terminals described below can all work as base stations by temporarily or semi-persistently performing base station functions.

[0167] For example, the UE mentioned in the present disclosure may be implemented as a mobile terminal (such as a smart phone, a tablet personal computer (PC), a notebook PC, a portable game terminal, a portable / dongle-type mobile router, and a digital camera) or a vehicle-mounted terminal (such as a car navigation device). The UE may also be implemented as a terminal that performs machine-to-machine (M2M) communication (also referred to as a machine type communication (MTC) terminal). In addition, the UE may be a wireless communication module (such as an integrated circuit module including a single chip) installed on each of the above-mentioned terminals.

[0168] Fig.18 1 is a block diagram showing a first example of a schematic configuration of an eNB to which the technology of the present disclosure can be applied. The eNB 1000 includes one or more antennas 1010 and a base station device 1020. The base station device 1020 and each antenna 1010 may be connected to each other via an RF cable.

[0169] Each of the antennas 1010 includes a single or multiple antenna elements (such as multiple antenna elements included in a multiple-input multiple-output (MIMO) antenna) and is used for the base station device 1020 to transmit and receive wireless signals. Fig.18 As shown, the eNB 1000 may include multiple antennas 1010. For example, the multiple antennas 1010 may be compatible with multiple frequency bands used by the eNB 1000. Fig.18 An example is shown in which the eNB 1000 includes a plurality of antennas 1010 , but the eNB 1000 may also include a single antenna 1010 .

[0170] The base station device 1020 includes a controller 1021 , a memory 1022 , a network interface 1023 , and a wireless communication interface 1025 .

[0171] The controller 1021 may be, for example, a CPU or a DSP, and operates various functions of the higher layers of the base station device 1020. For example, the controller 1021 generates a data packet based on the data in the signal processed by the wireless communication interface 1025, and transmits the generated packet via the network interface 1023. The controller 1021 may bundle data from a plurality of baseband processors to generate a bundled packet, and transmit the generated bundled packet. The controller 1021 may have a logical function to perform the following control: the control may be such as radio resource control, radio bearer control, mobility management, admission control, and scheduling. The control may be performed in conjunction with a nearby eNB or core network node. The memory 1022 includes a RAM and a ROM, and stores programs executed by the controller 1021 and various types of control data (such as a terminal list, transmission power data, and scheduling data).

[0172] The network interface 1023 is a communication interface for connecting the base station device 1020 to the core network 1024. The controller 1021 can communicate with the core network node or another eNB via the network interface 1023. In this case, the eNB 1000 and the core network node or other eNBs can be connected to each other through a logical interface (such as an S1 interface and an X2 interface). The network interface 1023 can also be a wired communication interface or a wireless communication interface for a wireless backhaul line. If the network interface 1023 is a wireless communication interface, the network interface 1023 can use a higher frequency band for wireless communication compared to the frequency band used by the wireless communication interface 1025.

[0173] The wireless communication interface 1025 supports any cellular communication scheme (such as long term evolution (LTE) and LTE-Advanced), and provides a wireless connection to a terminal located in a cell of the eNB 1000 via the antenna 1010. The wireless communication interface 1025 may generally include, for example, a baseband (BB) processor 1026 and an RF circuit 1027. The BB processor 1026 may perform, for example, encoding / decoding, modulation / demodulation, and multiplexing / demultiplexing, and perform various types of signal processing of layers (such as L1, medium access control (MAC), radio link control (RLC), and packet data convergence protocol (PDCP)). Instead of the controller 1021, the BB processor 1026 may have a part or all of the above-mentioned logical functions. The BB processor 1026 may be a memory storing a communication control program, or a module including a processor configured to execute a program and related circuits. Updating the program may change the function of the BB processor 1026. The module may be a card or a blade inserted into a slot of the base station device 1020. Alternatively, the module may also be a chip mounted on a card or a blade. Meanwhile, the RF circuit 1027 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives a wireless signal via the antenna 1010 .

[0174] like Fig.18 As shown, the wireless communication interface 1025 may include multiple BB processors 1026. For example, the multiple BB processors 1026 may be compatible with multiple frequency bands used by the eNB 1000. Fig.18 As shown, the wireless communication interface 1025 may include multiple RF circuits 1027. For example, the multiple RF circuits 1027 may be compatible with multiple antenna elements. Fig.18 An example is shown in which the wireless communication interface 1025 includes a plurality of BB processors 1026 and a plurality of RF circuits 1027 , but the wireless communication interface 1025 may also include a single BB processor 1026 or a single RF circuit 1027 .

[0175] Fig.19 1 is a block diagram showing a second example of a schematic configuration of an eNB to which the technology of the present disclosure can be applied. The eNB 1130 includes one or more antennas 1140, a base station device 1150, and an RRH 1160. The RRH 1160 and each antenna 1140 can be connected to each other via an RF cable. The base station device 1150 and the RRH 1160 can be connected to each other via a high-speed line such as an optical fiber cable.

[0176] Each of the antennas 1140 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for the RRH 1160 to transmit and receive wireless signals. Fig.19 As shown, the eNB 1130 may include multiple antennas 1140. For example, the multiple antennas 1140 may be compatible with the multiple frequency bands used by the eNB 1130. Fig.19 An example is shown in which the eNB 1130 includes a plurality of antennas 1140 , but the eNB 1130 may also include a single antenna 1140 .

[0177] The base station device 1150 includes a controller 1151, a memory 1152, a network interface 1153, a wireless communication interface 1155, and a connection interface 1157. The controller 1151, the memory 1152, and the network interface 1153 are similar to the reference Fig.18 The controller 1021, memory 1022 and network interface 1023 described are the same.

[0178] The wireless communication interface 1155 supports any cellular communication scheme (such as LTE and LTE-Advanced), and provides wireless communication to a terminal located in a sector corresponding to the RRH 1160 via the RRH 1160 and the antenna 1140. The wireless communication interface 1155 may generally include, for example, a BB processor 1156. In addition to the BB processor 1156 being connected to the RF circuit 1164 of the RRH 1160 via the connection interface 1157, the BB processor 1156 is connected to the reference RF circuit 1164 of the RRH 1160. Fig.18 The same as the BB processor 1026 described above. Fig.19 As shown, the wireless communication interface 1155 may include multiple BB processors 1156. For example, the multiple BB processors 1156 may be compatible with multiple frequency bands used by the eNB 1130. Fig.19 An example is shown in which the wireless communication interface 1155 includes a plurality of BB processors 1156 , but the wireless communication interface 1155 may also include a single BB processor 1156 .

[0179] The connection interface 1157 is an interface for connecting the base station device 1150 (wireless communication interface 1155) to the RRH 1160. The connection interface 1157 may also be a communication module for connecting the base station device 1150 (wireless communication interface 1155) to the RRH 1160 for communication in the above-mentioned high-speed line.

[0180] The RRH 1160 includes a connection interface 1161 and a wireless communication interface 1163 .

[0181] The connection interface 1161 is an interface for connecting the RRH 1160 (wireless communication interface 1163) to the base station device 1150. The connection interface 1161 may also be a communication module for communication in the above-mentioned high-speed line.

[0182] The wireless communication interface 1163 transmits and receives wireless signals via the antenna 1140. The wireless communication interface 1163 may generally include, for example, an RF circuit 1164. The RF circuit 1164 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives wireless signals via the antenna 1140. Fig.19 As shown, the wireless communication interface 1163 may include multiple RF circuits 1164. For example, the multiple RF circuits 1164 may support multiple antenna elements. Fig.19 An example is shown in which the wireless communication interface 1163 includes a plurality of RF circuits 1164 , but the wireless communication interface 1163 may also include a single RF circuit 1164 .

[0183] exist Fig.18 and Fig.19 In the eNB 1000 and eNB 1130 shown in FIG. Fig.16The processing circuit 1610 described may be implemented by the controller 1021 and / or the controller 1151 and by using Fig.16 The communication unit 1620 described may be implemented by the wireless communication interface 1025 and the wireless communication interface 1155 and / or the wireless communication interface 1163. At least part of the functions may also be implemented by the controller 1021 and the controller 1151. For example, the controller 1021 and / or the controller 1151 may perform the control functions by executing instructions stored in the corresponding memory.

[0184] Fig. 20 1 is a block diagram showing an example of a schematic configuration of a smartphone 1200 to which the technology of the present disclosure can be applied. The smartphone 1200 includes a processor 1201, a memory 1202, a storage device 1203, an external connection interface 1204, a camera device 1206, a sensor 1207, a microphone 1208, an input device 1209, a display device 1210, a speaker 1211, a wireless communication interface 1212, one or more antenna switches 1215, one or more antennas 1216, a bus 1217, a battery 1218, and an auxiliary controller 1219.

[0185] The processor 1201 may be, for example, a CPU or a system on chip (SoC), and controls the functions of the application layer and other layers of the smartphone 1200. The memory 1202 includes a RAM and a ROM, and stores data and programs executed by the processor 1201. The storage device 1203 may include a storage medium such as a semiconductor memory and a hard disk. The external connection interface 1204 is an interface for connecting an external device (such as a memory card and a universal serial bus (USB) device) to the smartphone 1200.

[0186] The camera device 1206 includes an image sensor such as a charge coupled device (CCD) and a complementary metal oxide semiconductor (CMOS), and generates a captured image. The sensor 1207 may include a group of sensors such as a measurement sensor, a gyro sensor, a geomagnetic sensor, and an acceleration sensor. The microphone 1208 converts the sound input to the smart phone 1200 into an audio signal. The input device 1209 includes, for example, a touch sensor, a keypad, a keyboard, a button, or a switch configured to detect a touch on the screen of the display device 1210, and receives an operation or information input from a user. The display device 1210 includes a screen such as a liquid crystal display (LCD) and an organic light emitting diode (OLED) display, and displays an output image of the smart phone 1200. The speaker 1211 converts an audio signal output from the smart phone 1200 into sound.

[0187] The wireless communication interface 1212 supports any cellular communication scheme (such as LTE and LTE-Advanced), and performs wireless communication. The wireless communication interface 1212 may generally include, for example, a BB processor 1213 and an RF circuit 1214. The BB processor 1213 may perform, for example, encoding / decoding, modulation / demodulation, and multiplexing / demultiplexing, and perform various types of signal processing for wireless communication. Meanwhile, the RF circuit 1214 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via an antenna 1216. The wireless communication interface 1212 may be a chip module on which the BB processor 1213 and the RF circuit 1214 are integrated. Fig. 20 As shown, the wireless communication interface 1212 may include multiple BB processors 1213 and multiple RF circuits 1214. Fig. 20 An example is shown in which the wireless communication interface 1212 includes a plurality of BB processors 1213 and a plurality of RF circuits 1214 , but the wireless communication interface 1212 may also include a single BB processor 1213 or a single RF circuit 1214 .

[0188] In addition, in addition to the cellular communication scheme, the wireless communication interface 1212 can support other types of wireless communication schemes, such as short-range wireless communication schemes, near field communication schemes, and wireless local area network (LAN) schemes. In this case, the wireless communication interface 1212 can include a BB processor 1213 and an RF circuit 1214 for each wireless communication scheme.

[0189] Each of the antenna switches 1215 switches a connection destination of the antenna 1216 between a plurality of circuits (eg, circuits for different wireless communication schemes) included in the wireless communication interface 1212 .

[0190] Each of the antennas 1216 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for the wireless communication interface 1212 to transmit and receive wireless signals. Fig. 20 As shown, the smartphone 1200 may include multiple antennas 1216. Fig. 20 An example is shown in which the smart phone 1200 includes a plurality of antennas 1216 , but the smart phone 1200 may also include a single antenna 1216 .

[0191] In addition, the smartphone 1200 may include an antenna 1216 for each wireless communication scheme. In this case, the antenna switch 1215 may be omitted from the configuration of the smartphone 1200.

[0192] The bus 1217 connects the processor 1201, the memory 1202, the storage device 1203, the external connection interface 1204, the camera 1206, the sensor 1207, the microphone 1208, the input device 1209, the display device 1210, the speaker 1211, the wireless communication interface 1212, and the auxiliary controller 1219 to each other. Fig. 20 The various blocks of the smartphone 1200 shown are supplied with power, the feed lines being partially shown as dashed lines in the figure. The auxiliary controller 1219 operates the minimum necessary functions of the smartphone 1200, for example in a sleep mode.

[0193] exist Fig. 20 In the illustrated smart phone 1200, by using Figure 5 The processing circuit 510 and the acquisition unit 511 and the estimation unit 512 therein can be implemented by the processor 1201 or the auxiliary controller 1219, and by using Figure 5 The communication unit 520 described may be implemented by the wireless communication interface 1212. At least part of the functions may also be implemented by the processor 1201 or the auxiliary controller 1219. For example, the processor 1201 or the auxiliary controller 1219 may perform the information acquisition function and the estimation function by executing instructions stored in the memory 1202 or the storage device 1203.

[0194] Fig.21 13 is a block diagram showing an example of a schematic configuration of a car navigation device 1320 to which the technology of the present disclosure can be applied. The car navigation device 1320 includes a processor 1321, a memory 1322, a global positioning system (GPS) module 1324, a sensor 1325, a data interface 1326, a content player 1327, a storage medium interface 1328, an input device 1329, a display device 1330, a speaker 1331, a wireless communication interface 1333, one or more antenna switches 1336, one or more antennas 1337, and a battery 1338.

[0195] The processor 1321 may be, for example, a CPU or a SoC, and controls a navigation function and other functions of the car navigation device 1320. The memory 1322 includes a RAM and a ROM, and stores data and a program executed by the processor 1321.

[0196] The GPS module 1324 measures the position (such as latitude, longitude and altitude) of the car navigation device 1320 using GPS signals received from GPS satellites. The sensor 1325 may include a group of sensors such as a gyro sensor, a geomagnetic sensor and an air pressure sensor. The data interface 1326 is connected to, for example, the vehicle network 1341 via a terminal not shown, and acquires data (such as vehicle speed data) generated by the vehicle.

[0197] The content player 1327 reproduces content stored in a storage medium such as a CD and a DVD, which is inserted into the storage medium interface 1328. The input device 1329 includes, for example, a touch sensor, a button, or a switch configured to detect a touch on the screen of the display device 1330, and receives an operation or information input from a user. The display device 1330 includes a screen such as an LCD or an OLED display, and displays an image of a navigation function or reproduced content. The speaker 1331 outputs a sound of a navigation function or reproduced content.

[0198] The wireless communication interface 1333 supports any cellular communication scheme (such as LTE and LTE-Advanced) and performs wireless communication. The wireless communication interface 1333 may generally include, for example, a BB processor 1334 and an RF circuit 1335. The BB processor 1334 may perform, for example, encoding / decoding, modulation / demodulation, and multiplexing / demultiplexing, and perform various types of signal processing for wireless communication. Meanwhile, the RF circuit 1335 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via an antenna 1337. The wireless communication interface 1333 may also be a chip module on which the BB processor 1334 and the RF circuit 1335 are integrated. Fig.21 As shown, the wireless communication interface 1333 may include multiple BB processors 1334 and multiple RF circuits 1335. Fig.21 An example is shown in which the wireless communication interface 1333 includes a plurality of BB processors 1334 and a plurality of RF circuits 1335 , but the wireless communication interface 1333 may also include a single BB processor 1334 or a single RF circuit 1335 .

[0199] In addition, in addition to the cellular communication scheme, the wireless communication interface 1333 can support other types of wireless communication schemes, such as short-range wireless communication schemes, near field communication schemes, and wireless LAN schemes. In this case, for each wireless communication scheme, the wireless communication interface 1333 can include a BB processor 1334 and an RF circuit 1335.

[0200] Each of the antenna switches 1336 switches a connection destination of the antenna 1337 between a plurality of circuits (such as circuits for different wireless communication schemes) included in the wireless communication interface 1333 .

[0201] Each of the antennas 1337 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for the wireless communication interface 1333 to transmit and receive wireless signals. Fig.21 As shown, the car navigation device 1320 may include multiple antennas 1337. Fig.21 An example is shown in which the car navigation device 1320 includes a plurality of antennas 1337 , but the car navigation device 1320 may also include a single antenna 1337 .

[0202] In addition, the car navigation device 1320 may include an antenna 1337 for each wireless communication scheme. In this case, the antenna switch 1336 may be omitted from the configuration of the car navigation device 1320.

[0203] Battery 1338 is fed via a feeder Fig.21 The respective blocks of the illustrated car navigation device 1320 are supplied with electric power, and feed lines are partially illustrated as dotted lines in the figure. The battery 1338 accumulates electric power supplied from the vehicle.

[0204] exist Fig.21 In the illustrated car navigation device 1320, by using Figure 5 The processing circuit 510 and the acquisition unit 511 and the estimation unit 512 therein can be implemented by the processor 1321 and by using Figure 5 The described communication unit 520 may be implemented by the wireless communication interface 1333. At least a part of the functions may also be implemented by the processor 1321. For example, the processor 1321 may perform various information acquisition functions and estimation functions by executing instructions stored in the memory 1322.

[0205] The technology of the present disclosure may also be implemented as an in-vehicle system (or vehicle) 1340 including one or more blocks of a car navigation device 1320, an in-vehicle network 1341, and a vehicle module 1342. The vehicle module 1342 generates vehicle data (such as vehicle speed, engine speed, and fault information), and outputs the generated data to the in-vehicle network 1341.

[0206] In the system and method of the present disclosure, it is obvious that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present disclosure. In addition, the steps of performing the above series of processes can naturally be performed in chronological order according to the order of description, but do not necessarily need to be performed in chronological order. Some steps can be performed in parallel or independently of each other.

[0207] Although the embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings, it should be understood that the embodiments described above are only used to illustrate the present disclosure and do not constitute a limitation of the present disclosure. For those skilled in the art, various modifications and changes can be made to the above embodiments without departing from the essence and scope of the present disclosure. Therefore, the scope of the present disclosure is limited only by the attached claims and their equivalent meanings.

Claims

1. A user equipment in a wireless communication system, comprising: One or more processing circuits configured to: Acquire a downlink signal from an electronic device in the wireless communication system, wherein the downlink signal includes a synchronization signal block SSB or a channel state information reference signal CSI-RS; estimating an angle of arrival AOA of the downlink signal based on a phase angle of the downlink signal; estimating a distance between the electronic device and the user equipment based on the received power of the downlink signal; estimating a relative position of the user equipment based on the distance and the AOA, the relative position being a position of the user equipment relative to the electronic device; and estimating the actual position of the user equipment based on the position of the electronic equipment and the estimated relative position, wherein electronic equipment geographic location information indicating the position of the electronic equipment is sent by the electronic equipment to the user equipment, The user equipment is not connected to the electronic device and is in a radio resource control RRC idle state, or is connected to the electronic device but is in an RRC inactive state.

2. The user equipment according to claim 1, wherein: The AOA is estimated to include at least one of the following: An AOA in a first direction is estimated and an AOA in a second direction is estimated.

3. The user equipment according to claim 2, wherein: The AOA of the first direction is a horizontal AOA, which indicates the angle between the projection of the arrival direction of the downlink signal on the horizontal plane and the horizontal reference direction, and the AOA of the second direction is a vertical AOA, which indicates the angle between the projection of the arrival direction of the downlink signal on the vertical plane and the vertical reference direction.

4. The user equipment according to claim 1, wherein: When receiving downlink signals from multiple electronic devices, the processing circuit is further configured to perform the following operations: estimating the AOA of a first electronic device among the plurality of electronic devices; as well as estimating the AOA of a second electronic device among the plurality of electronic devices, The AOA of the first electronic device, the AOA of the second electronic device, the location of the first electronic device and the location of the second electronic device are used to estimate the location of the user equipment.

5. The user equipment according to claim 4, wherein: After estimating the AOA of the first electronic device and the AOA of the second electronic device, the processing circuit is further configured to perform the following operations: Switching the user equipment to an RRC connected state; as well as Information about the AOA of the first electronic device and information about the AOA of the second electronic device are sent to a serving base station of the user equipment so that the serving base station estimates the location of the user equipment based on the AOA of the first electronic device, the AOA of the second electronic device, the location of the first electronic device and the location of the second electronic device.

6. The user equipment according to any one of claims 1 to 5, further comprising a massive multiple-input multiple-output MIMO antenna array, and wherein: The wireless communication system is a 5G new wireless NR system, and the electronic device is a base station or a transmit / receive port TRP.

7. An electronic device in a wireless communication system, comprising: Transceiver; as well as One or more processing circuits configured to: causing the transceiver to send a downlink signal so that a user equipment in the wireless communication system estimates an angle of arrival AOA of the downlink signal based on a phase angle of the downlink signal, wherein the downlink signal includes a synchronization signal block SSB or a channel state information reference signal CSI-RS, The user equipment is not connected to the electronic device and is in a radio resource control RRC idle state, or is connected to the electronic device but is in an RRC inactive state. The user equipment performs the following operations: estimating a distance between the electronic device and the user equipment based on the received power of the downlink signal; estimating a relative position of the user equipment based on the distance and the AOA, the relative position being a position of the user equipment relative to the electronic device; and An actual position of the user equipment is estimated based on the position of the electronic device and the estimated relative position, wherein the electronic device causes the transceiver to send geographic location information indicating the position of the electronic device to the user equipment.

8. The electronic device according to claim 7, in, The processing circuit is further configured to perform the following operations: Establishing an RRC connection with the user equipment; Enable the transceiver to receive a first AOA of a downlink signal of the electronic device and a second AOA of a downlink signal of another electronic device from the user equipment; as well as The location of the user equipment is estimated based on the first AOA, the second AOA, the location of the electronic device, and the location of the other electronic device.

9. The electronic device according to claim 7 or 8, wherein: The wireless communication system is a 5G new wireless NR system, and the electronic device is a base station or a transmit / receive port TRP.

10. A method for wireless communication in a wireless communication system, wherein: The method is performed by a user equipment in the wireless communication system, and the method includes: Acquire a downlink signal from an electronic device in the wireless communication system, wherein the downlink signal includes a synchronization signal block SSB or a channel state information reference signal CSI-RS; estimating an angle of arrival AOA of the downlink signal based on a phase angle of the downlink signal; estimating a distance between the electronic device and the user equipment based on the received power of the downlink signal; estimating a relative position of the user equipment based on the distance and the AOA, the relative position being a position of the user equipment relative to the electronic device; and estimating the actual position of the user equipment based on the position of the electronic equipment and the estimated relative position, wherein electronic equipment geographic location information indicating the position of the electronic equipment is sent by the electronic equipment to the user equipment, The user equipment is not connected to the electronic device and is in a radio resource control RRC idle state, or is connected to the electronic device but is in an RRC inactive state.

11. A method for wireless communication in a wireless communication system, comprising: A downlink signal is sent by an electronic device in the wireless communication system so that a user equipment in the wireless communication system estimates an angle of arrival AOA of the downlink signal based on a phase angle of the downlink signal, wherein the downlink signal includes a synchronization signal block SSB or a channel state information reference signal CSI-RS, The user equipment is not connected to the electronic device and is in a radio resource control RRC idle state, or is connected to the electronic device but is in an RRC inactive state. The user equipment performs the following operations: estimating a distance between the electronic device and the user equipment based on the received power of the downlink signal; estimating a relative position of the user equipment based on the distance and the AOA, the relative position being a position of the user equipment relative to the electronic device; and The actual position of the user equipment is estimated based on the position of the electronic device and the estimated relative position, wherein the electronic device causes a transceiver in the electronic device to send geographic location information indicating the position of the electronic device to the user equipment.

12. A computer-readable storage medium comprising executable computer instructions which, when executed by a computer, cause the computer to perform the method according to claim 10 or 11.

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