Low complexity receive (RX) beamforming for uplink (UL) positioning

Abstract

A method includes acquiring, at a location management apparatus of a wireless communication system, information indicating an approximate location of a user equipment; determining network assistance signaling based on the acquired information of the approximate location of the user equipment; and transmitting the determined network assistance signaling to a first network apparatus of the wireless communication system, the determination of the network assistance signaling including determining an expected angle of arrival for the first network apparatus and including the expected angle of arrival in the network assistance signaling, the expected angle of arrival being an angle or an angle range corresponding to a direction from which a wireless transmission from the user equipment arrives at the first network apparatus.

Description

Technical Field

[0001] One or more example embodiments relate generally to wireless communication, and more specifically, to facilitating positioning in 3GPP 5G New Radio (NR) networks. Background Technology

[0002] Location is one of the key enablers of the 3GPP 5G New Radio (NR) technology, which aims to support a wide range of vertical sectors and use cases. By acquiring knowledge about the approximate / precise location of a device, 5G systems enable applications such as location-based services, autonomous driving, and the Industrial Internet of Things (IoT). While accurate positioning can generally be achieved using Global Navigation Satellite System (GNSS) technologies such as GPS, the accuracy provided by such technologies may be insufficient for some scenarios, such as indoor scenarios like factory automation or warehouse management. Therefore, RAT-dependent positioning methods based on downlink / uplink signals (e.g., Positioning Reference Signals (PRS) / Sound Reference Signals (SRS)) developed by 3GPP standards have been extensively studied in LTE / NR. Summary of the Invention

[0003] According to at least some example embodiments, a method includes: acquiring information indicating the approximate location of a user equipment at a location management device of a wireless communication system; determining network auxiliary signaling based on the acquired information indicating the approximate location of the user equipment; and sending the determined network auxiliary signaling to a first network device of the wireless communication system, the determination of the network auxiliary signaling including determining the expected angle of arrival of the first network device and including the expected angle of arrival in the network auxiliary signaling, the expected angle of arrival being an angle or angle range corresponding to the direction in which wireless transmissions from the user equipment arrive at the first network device in the opposite direction.

[0004] Obtaining information indicating the approximate location of a user equipment may include: receiving a measurement report from a service network device serving the user equipment; and determining the approximate location of the user equipment based at least on the measurement report and the location of the service network device serving the user equipment.

[0005] The measurement report may include at least one of the following: an angle of arrival indicating the angle or range of angles corresponding to the direction of wireless transmission from the user equipment to the serving network device; an estimated distance or range of estimated distances from the user equipment to the serving network device; the approximate location of the user equipment calculated by the serving network device; or the cell coverage of the serving network device.

[0006] Determining the expected angle of arrival may include at least based on information about the approximate location of the user equipment and the location of the first network device.

[0007] According to at least some example embodiments, a method includes: receiving a location request from a location management device at a serving network device; determining a general location of a user equipment at the serving network device in response to receiving the location request, the serving network device serving the user equipment; and sending a measurement report from the serving network device to the location management device, the measurement report indicating the determined general location of the user equipment.

[0008] Determining the approximate location of a user equipment may include: receiving an uplink positioning reference signal from the user equipment; measuring the angle of arrival relative to the user equipment based on the received uplink positioning reference signal, wherein the angle of arrival is an angle range corresponding to the direction in which the user equipment is located relative to the serving network device; measuring the distance or distance range from the user equipment to the serving network device based on the received uplink positioning reference signal; and determining the approximate location of the user equipment based on the angle of arrival and the distance.

[0009] According to at least some example embodiments, a method of a first network device in a wireless communication system includes: at the first network device, receiving network-assisted signaling from a location management device of the wireless communication system, the network-assisted signaling including an expected angle of arrival of the first network device relative to a user equipment, the expected angle of arrival being an angle or angle range corresponding to a direction in which wireless transmissions from the user equipment arrive at the first network device; selecting one or more receiving beams based on the expected angle of arrival; receiving an uplink positioning reference signal from the user equipment using the selected one or more receiving beams; and performing a positioning measurement on the received uplink positioning reference signal.

[0010] According to at least some example embodiments, a method for determining receive beamforming in a wireless communication system, the wireless communication system including a location management device, a serving network device for a user equipment, and a first network device, the method comprising: sending a location request from the location management device to the serving network device; at the location management device, acquiring information indicating the approximate location of the user equipment; at the location management device, determining network auxiliary signaling based on the acquired information indicating the approximate location of the user equipment, the determination of the network auxiliary signaling including determining a first expected angle of arrival for the first network device and including the expected angle of arrival in the network auxiliary signaling, the expected angle of arrival being an angle or angle range corresponding to a direction from which wireless transmissions from the user equipment arrive at the first network device; sending the determined network auxiliary signaling to the first network device; at the first network device, selecting one or more receive beams based on the expected angle of arrival; sending an uplink positioning reference signal from the user equipment; at the first network device, receiving the uplink positioning reference signal of the user equipment using the selected one or more receive beams; at the first network device, performing a positioning measurement regarding the location of the user equipment; and reporting the positioning measurement to the location management device.

[0011] Determining the expected angle of arrival may include: determining the expected angle of arrival based at least on information about the approximate location of the user equipment and the location of the first network device.

[0012] The method may further include: receiving a location request at a service device; at the service device, in response to receiving the location request, measuring the approximate location of the user equipment; and sending a measurement report to a location management device, the measurement report indicating the approximate location of the user equipment measured, wherein the information indicating the approximate location of the user equipment obtained by the location management device includes the measurement report.

[0013] The acquisition of information can indicate the approximate location of the user equipment, including determining the cell coverage area of ​​the serving network device at the location management device, and the information indicating the approximate location of the user equipment acquired by the location management device can include the determined cell coverage area of ​​the serving network device.

[0014] The first network device can be a receiving point of a network device in a wireless communication system, and the network device is a non-service network device that performs positioning measurements.

[0015] According to at least some example embodiments, a location management device for a wireless communication system includes a memory storing computer-executable instructions; and a processor configured to execute the computer-executable instructions, wherein the computer can execute the instructions including: acquiring information indicating the approximate location of a user equipment, determining network-assisted signaling based on the acquired information indicating the approximate location of the user equipment, and sending the determined network-assisted signaling to a first network device of the wireless communication system, wherein determining the network-assisted signaling includes determining an expected angle of arrival for the first network device and including the expected angle of arrival in the network-assisted signaling, the expected angle of arrival being an angle or angle range corresponding to a direction from which wireless transmissions from the user equipment arrive at the first network device.

[0016] Obtaining information indicating the approximate location of a user equipment may include: receiving a measurement report from a service network device serving the user equipment; and determining the approximate location of the user equipment based at least on the measurement report and the location of the service network device serving the user equipment.

[0017] The measurement report may include at least one of the following: an angle of arrival indicating the angle or range of angles corresponding to the direction of wireless transmission from the user equipment to the serving network device; an estimated distance or range of estimated distances from the user equipment to the serving network device; the approximate location of the user equipment calculated by the serving network device; or the cell coverage of the serving network device.

[0018] Determining the expected angle of arrival may include: determining the expected angle of arrival based at least on information about the approximate location of the user equipment and the location of the first network device.

[0019] According to at least some example embodiments, a service network apparatus includes a memory storing computer-executable instructions; and a processor configured to execute the computer-executable instructions, wherein the computer-executable instructions include: receiving a location request from a location management device, determining the approximate location of a user equipment in response to receiving the location request, the service network apparatus serving the user equipment, and sending a measurement report to the location management device, the measurement report indicating the determined approximate location of the user equipment.

[0020] Determining the approximate location of a user equipment may include: receiving an uplink positioning reference signal from the user equipment; measuring the angle of arrival relative to the user equipment based on the received uplink positioning reference signal, wherein the angle of arrival is an angle range corresponding to the direction in which the user equipment is located relative to the serving network device; measuring the distance or distance range from the user equipment to the serving network device based on the received uplink positioning reference signal; and determining the approximate location of the user equipment based on the angle of arrival and the distance.

[0021] According to at least some example embodiments, a first network device of a wireless communication system includes a memory storing computer-executable instructions; and a processor configured to execute the computer-executable instructions, wherein the computer-executable instructions include: receiving network-assisted signaling from a location management device of the wireless communication system at the first network device, the network-assisted signaling including an expected angle of arrival of the first network device relative to a user equipment, the expected angle of arrival being an angle or angle range corresponding to a direction in which wireless transmissions from the user equipment arrive at the first network device; selecting one or more receiving beams based on the expected angle of arrival; using the selected one or more receiving beams to receive an uplink positioning reference signal from the user equipment; and performing a positioning measurement on the received uplink positioning reference signal.

[0022] According to at least some example embodiments, a wireless communication system includes: a location management device; a serving network device; and a first network device. The location management device is configured to: send a location request from the location management device to the serving network device; obtain information indicating the approximate location of a user equipment (User Equipment); determine network auxiliary signaling based on the obtained information indicating the approximate location of the User Equipment; the determination of the network auxiliary signaling includes determining a first expected angle of arrival (Angle of Arrival) of the first network device and including the Angle of Arrival in the network auxiliary signaling, the Angle of Arrival being an angle or angle range corresponding to a direction from which wireless transmissions from the User Equipment arrive at the first network device; and send the determined network auxiliary signaling to the first network device. The first network device is configured to select one or more receiving beams based on the Angle of Arrival. The User Equipment is configured to transmit an uplink positioning reference signal. The first network device is further configured to: receive the uplink positioning reference signal of the User Equipment using the selected one or more receiving beams; perform a location measurement regarding the location of the User Equipment; and report the location measurement to the location management device.

[0023] Determining the expected angle of arrival may include: determining the expected angle of arrival based at least on information about the approximate location of the user equipment and the location of the first network device.

[0024] The service network device may also be configured to: receive a location request at the service device; measure the approximate location of the user equipment at the service device in response to receiving the location request; and send a measurement report to a location management device, the measurement report indicating the approximate location of the user equipment being measured, and the information indicating the approximate location of the user equipment obtained by the location management device may include the measurement report.

[0025] The location management device can be configured such that acquiring information indicating the approximate location of a user equipment includes: determining the cell coverage area of ​​a serving network device at the location management device, and the information indicating the approximate location of the user equipment acquired by the location management device may include the determined cell coverage area of ​​the serving network device.

[0026] The first network device can be a receiving point of a network device in a wireless communication system, which is a non-service network device that performs positioning measurements.

[0027] According to at least some example embodiments, a method includes: receiving a UL positioning reference signal configuration message at a user equipment of a wireless communication network; and transmitting a UL positioning reference signal based on the UL positioning reference signal configuration message, such that the UL positioning reference signal is received at a first network device using one or more receiving beams selected by the first network device based on an expected angle of arrival, the expected angle of arrival being an angle or angle range corresponding to a direction from which wireless transmissions from the user equipment arrive at the first network device.

[0028] According to at least some example embodiments, a user equipment of a wireless communication system includes a memory storing computer-executable instructions; and a processor configured to execute the computer-executable instructions, wherein the computer-executable instructions include: receiving a UL positioning reference signal configuration message, and transmitting a UL positioning reference signal based on the UL positioning reference signal configuration message, such that the UL positioning reference signal can be received at a first network device using one or more receiving beams selected by the first network device based on an expected angle of arrival, the expected angle of arrival being an angle or range of angles corresponding to a direction from which wireless transmissions from the user equipment arrive at the first network device. Attached Figure Description

[0029] Exemplary embodiments will be more fully understood from the detailed description and accompanying drawings given below, wherein similar elements are indicated by similar reference numerals, which are given by way of illustration only and therefore do not limit this disclosure.

[0030] Figure 1 This is a diagram showing an example reference signal time difference (RSTD) search window.

[0031] Figure 2 This is a diagram illustrating a portion of a second wireless communication system according to at least some example embodiments.

[0032] Figure 3 Network elements according to at least some example embodiments are shown.

[0033] Figure 4This is a flowchart illustrating an example receive (Rx) beamforming determination method.

[0034] Figure 5A This is a diagram illustrating a first example method for calculating the expected angle of arrival (eAoA) according to at least some example embodiments.

[0035] Figure 5B This is for explaining the invention based on at least some example embodiments. Figure 5A A diagram illustrating Rx beam selection performed at the receiving point (RP) in the diagram.

[0036] Figure 6A This is a diagram illustrating a second example method for calculating eAoA according to at least some example embodiments.

[0037] Figure 6B This is for explaining the invention based on at least some example embodiments. Figure 6A A diagram illustrating Rx beam selection performed by a neighboring next-generation NodeB (gNB).

[0038] Figure 7 This is a diagram used to explain a third example method for calculating eAoA according to at least some example embodiments.

[0039] Figure 8 This is for explaining according to at least some example embodiments. Figure 7 The diagram illustrates an example of angle calculation in the third example method for calculating eAoA.

[0040] It should be noted that these figures are intended to illustrate the general characteristics of the methods, structures, and / or materials utilized in certain exemplary embodiments and are intended to supplement the written description provided below. However, these figures are not drawn to scale and may not accurately reflect the precise structural or performance characteristics of any given embodiment, and should not be construed as limiting or restricting the range of values ​​or properties included in the exemplary embodiments. The use of similar or identical reference numerals in the various figures is intended to indicate the presence of similar or identical elements or features. Detailed Implementation

[0041] Various exemplary embodiments will now be described more fully with reference to the accompanying drawings, some of which illustrate exemplary embodiments.

[0042] Detailed illustrative embodiments are disclosed herein. However, the specific structural and functional details disclosed herein are merely representative and are intended to describe exemplary embodiments. These exemplary embodiments may be embodied in many alternative forms and should not be construed as being limited to the embodiments set forth herein.

[0043] It should be understood that there is no intention to limit the exemplary embodiments to the specific forms disclosed. Rather, the exemplary embodiments will cover all modifications, equivalents, and alternatives falling within the scope of this disclosure. Throughout the description of the accompanying drawings, similar numbers refer to similar elements.

[0044] 1. An overview of a receive (Rx) beamforming determination method according to at least some example embodiments, and its example advantages. point.

[0045] In Long Term Evolution (LTE) positioning, there are logical units called Location Measurement Units (LMUs) that can be co-located with or not co-located with the base station to support uplink (UL) positioning (e.g., uplink time difference of arrival (U-TDOA)). In the 3rd Generation Partnership Project (3GPP) 5th Generation (5G) New Radio (NR), this terminology has changed, and now UL-only positioning Receive Points (RPs) are supported. These UL-only positioning RPs are able to receive UL signals and perform positioning measurements (e.g., Receive Time of Arrival (RTOA), UL Angle of Arrival (AoA)).

[0046] It is well known in positioning areas that the more measurement points there are, the better the positioning accuracy. Due to the expectation of very high accuracy, or alternatively, for some NR positioning use cases requiring very high accuracy, it is feasible to deploy a UL-only positioning RP to meet these requirements. As the name suggests, a UL-only positioning RP does not transmit reference signals or has the full capabilities of a next-generation NodeB (gNB).

[0047] In LTE and NR positioning, the Location Management Function (LMF) can predict the Reference Signal Time Difference (RSTD) value that the User Equipment (UE) is expected to measure and provide a search window to the UE in the auxiliary data sent to the UE.

[0048] For example, 3GPP Release 16 (Rel-16) (e.g., 3GPP Technical Specification (TS) 37.355 V16.0.0 (2020-03)) defines the Data-Per-TRP portion of the NR-DL-PRS-AssistanceData information element (IE) as follows:

[0049]

[0050] Figure 1 This is a diagram showing an example reference signal time difference (RTSD) search window. Figure 1 A portion of a first wireless communication system 40 is shown, comprising a first evolved NodeB (eNodeB1) and an i-th eNodeB (eNodeB2) separated by a distance d. i ). Figure 1The example in the example shows an RTSD search window with boundaries A and B and radius r.

[0051] A typical approach to determining Rx beamforming involves performing a beamforming training process. In UL-based positioning methods, Rx beamforming determination at the gNB / transmit and receive point (TRP) / RP only may include the following steps:

[0052] The UE shall transmit a reference signal for positioning (e.g., a Sounding Reference Signal (SRS) or a Physical Random Access Channel (PRACH) signal). The reference signal (which may also be referred to as the UL positioning reference signal in this specification) may be transmitted repeatedly (e.g., the SRS may be transmitted repeatedly at multiple SRS times). Although the SRS and PRACH signals are used as examples, the reference signal transmitted by the UE can be any signal used for positioning.

[0053] - When the reference signal (e.g., SRS) for positioning is received from the UE, the gNB / TRP / RP-only should perform an Rx beam scan. More specifically, the UE applies different Rx beams at different SRS times.

[0054] Based on measurements (e.g., Reference Signal Received Power (RSRP) and / or Received Signal Strength Indicator (RSSI)), gNB / TRP / RP only can determine the optimal Rx beam.

[0055] SRS is received from the UE on these optimal Rx beams for positioning.

[0056] The Rx beamforming process mentioned above can be very complex, especially in the following situations:

[0057] -UE transmit (Tx) beamforming should be considered, especially in frequency range 2 (FR2).

[0058] - The UE is moving, which may result in more frequent beam refinement and / or beam failure recovery.

[0059] Therefore, it is desirable to develop a new mechanism to reduce the complexity mentioned above, especially for low-cost network devices used for location (e.g., UL-only RPs), such as asset tracking devices.

[0060] According to at least some example embodiments, a low-complexity RX beamforming method for at least gNB / TRP / RP-only with positioning services includes: using an LMF to determine an expected / estimated angle of arrival (AoA) value and providing it to the gNB / TRP / RP. For example, the low-complexity RX beamforming method according to at least some example embodiments may include at least the following steps, which will be referenced below. Figure 4 This will be discussed in more detail in Figure 9:

[0061] 1. Obtain knowledge of the approximate area of ​​the UE (e.g., based on information from the serving gNB of the UE at the LMF);

[0062] 2. Calculate the expected AoA(eAoA) (e.g., at LMF);

[0063] 3. Initiating and providing network-assisted signaling for eAoA (e.g., from LMF to RP only); and

[0064] 4. Selecting the Rx beam for UL positioning measurements based on network-assisted signaling (e.g.,

[0065] At RP only, based on eAoA).

[0066] According to at least some example embodiments, UL positioning measurements are performed based on one or more UL positioning reference signals (e.g., SRS) from the UE. For example, based on one or more UL positioning reference signals from the UE, only the RP can perform various measurements (e.g., Receive Time of Arrival (RTOA), Uplink Angle of Arrival (UL-AoA), gNB Receive Transmit (Rx-Tx), SRS-RSRP, etc.).

[0067] The low-complexity RX beamforming method according to at least some example embodiments can provide one or more of the following advantages:

[0068] - Reduced beam training overhead

[0069] For example, by reducing or alternatively eliminating the need to perform beam scanning;

[0070] - Improved positioning estimation performance

[0071] For example, because more RPs are available to hear the UE;

[0072] - Reduced Rx interference; and

[0073] - Non-line-of-sight (NLOS) filtering is reduced.

[0074] Now refer to the following Figure 2 and Figure 3 Examples of the architecture of a wireless communication system and the structure of network elements are discussed according to at least some example embodiments.

[0075] 2. Example architecture of a wireless communication system and example structure of its network components.

[0076] Figure 2 A second wireless communication system 100 according to at least one example embodiment is shown. For example... Figure 2As shown, the second wireless communication system 100 may include: user equipment 110, a first next-generation NodeB (gNB) 120, a receiver point (RP) 125, and a core network (CN) node 130. Figure 2 In the example shown, user device 110 is a user equipment (UE). Therefore, in this specification, user device 110 can also be referred to as UE 110. UE 110 and first gNB 120 can wirelessly communicate with each other. According to at least some example embodiments, the first gNB is the serving gNB of UE 110. Therefore, in this specification, first gNB 120 can also be referred to as serving gNB 120. For example, UE 110 can attach to the cell of serving gNB 120, UE 110 can wirelessly transmit uplink (UL) data to gNB 120, and gNB 120 can wirelessly transmit downlink (DL) data to UE 110. Receiver 125 can receive UL data from UE 110. According to at least some example embodiments, RP 125 is an RP-only device. For example, according to at least some example embodiments, RP 125 is configured to wirelessly receive UL data (e.g., from UE 110), but is not configured to wirelessly transmit DL data. According to at least some example embodiments, a gNB (e.g., serving gNB 120) within the second wireless communication system 100 can be considered a TRP. Furthermore, according to at least some example embodiments, a RP-only device (e.g., RP 125) is a device configured for wireless data reception rather than wireless data transmission, and may be referred to herein as "RP-only" or "RP-only access point (AP)". Additionally, the CN node 130 can connect to both the serving gNB 120 and RP 125, and can receive data from and send data to both the serving gNB 120 and RP 125.

[0077] Examples of UE 110 include, but are not limited to, mobile devices, tablets, laptops, wearable devices, Internet of Things (IoT) devices, desktop computers, and / or any other type of fixed or portable device capable of operating according to the 5G NR communication standard and / or other wireless communication standards. Figure 2 In the example shown, UE 110 is a mobile device.

[0078] CN node 130 is a physical node of the CN of the second wireless communication system 100, and may embody one or more CN elements. According to at least some example embodiments, the CN of the second wireless communication system 100 is a 5G core (5GC) or includes a 5G core (5GC). Figure 2As shown, an example of a CN element that can be embodied by CN node 130 is a location management function (LMF). Therefore, in this specification, CN node 130 may also be referred to as LMF node 130 or LMF 130. An LMF node may also be referred to as a location management device in this application. Furthermore, instead of being included in or attached to one or more location management devices in the CN of the second wireless communication system 100, one or more location management devices may be included in the radio access network (RAN) of the second wireless communication system 100.

[0079] According to at least some example embodiments, the second wireless communication system 100 is not limited to Figure 2 The components shown, and the second wireless communication system 100 may include components different from those shown. Figure 2 The number of components shown. For example, the second wireless communication system 100 may include any number of UE devices, any number of gNBs, any number of RPs, any number of TRPs, any number of CN nodes, etc.

[0080] Furthermore, although not shown, the second wireless communication system 100 may also include additional 5GC network elements (e.g., in addition to LMF node 130). For example, gNB 120 may be connected to Access and Mobility Management Function (AMF) elements and / or Session Management Function (SMF) elements. Furthermore, although not shown, the second wireless communication system 100 may also include Long Term Evolution (LTE) network elements connected to gNB 120. Examples of such LTE elements include, but are not limited to, LTE Radio Access Technology (RAT) network elements (e.g., Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN) network elements) (such as evolved Node B (eNB)), and LTE core network elements (e.g., evolved Packet Core (EPC) network elements) (such as Mobility Management Entity (MME)). This will now be discussed below regarding... Figure 3 The discussion provides an example structure that can be used to embody one or more radio network elements (e.g., gNB, UE, RP, TRP, CN node, etc.) of the second wireless communication system 100.

[0081] Figure 3 An example embodiment of a network element is shown. (Reference) Figure 3Network element 102 includes: a memory 740, a processor 720, and various communication interfaces 760 interconnected with each other; and one or more antennas or antenna panels 765 connected to the various communication interfaces 760. The various interfaces 760 and antennas 765 can constitute a transceiver for transmitting or receiving data to or from a UE, gNB, RP, TRP, CN node, CN element, and / or another radio network element via one or more of a plurality of radio beams. According to at least some example embodiments, in addition to or alternatively to including an interface for supporting wireless communication, the various interfaces 760 may include an interface for supporting wired communication.

[0082] As will be understood, depending on the implementation of network element 102, network element 102 may include and Figure 3 The diagram shows a much larger number of components for providing the functionality of specific elements of the second wireless communication system 100 embodied by network element 102 (e.g., the functionality of UE, CN elements and / or nodes, gNB, RP, TRP, etc., according to one or more example embodiments). However, it is not necessary to show all of these generally conventional components for the purpose of disclosing illustrative example embodiments.

[0083] Memory 740 may be a computer-readable storage medium, typically including random access memory (RAM), read-only memory (ROM), and / or permanent mass storage devices such as disk drives. Memory 740 also stores an operating system and any other routines / modules / applications that provide functionality for specific elements of the second wireless communication system 100 embodied by network element 102 (e.g., functionality of the UE, CN element and / or node, gNB, RP, TRP, etc., according to one or more example embodiments) for execution by processor 720. These software components may also be loaded into memory 740 from a separate computer-readable storage medium using a drive mechanism (not shown). Such a separate computer-readable storage medium may include a disk, magnetic tape, DVD / CD-ROM drive, memory card, or other similar computer-readable recording media (not shown). In some example embodiments, software components may be loaded into memory 740 via one of various interfaces 760 instead of via a computer-readable storage medium. According to at least some example embodiments, memory 740 may store references to... Figure 3 The computer-executable instructions corresponding to any or all of the steps discussed in Figure 6.

[0084] Processor 720 can be configured to execute instructions of a computer program by performing system algorithms, logic, and input / output operations. Instructions can be provided to processor 720 by memory 740.

[0085] Various interfaces 760 may include components that interface the processor 720 with one or more antennas 765 or other input / output components. As will be understood, the various interfaces 760 and the programs stored in the memory 740 to articulate the specific functions of the network element 102 will vary depending on the specific elements of the second wireless communication system 100 embodied by the network element 102.

[0086] The various interfaces 760 may also include one or more user input devices (e.g., keyboard, keypad, mouse, etc.) and user output devices (e.g., monitor, speakers, etc.). See below for reference. Figure 4 Figure 9 illustrates an example of Rx beamforming.

[0087] 3. Example Rx beamforming method

[0088] Figure 4 This is a flowchart illustrating an Rx beamforming method according to at least some example embodiments. Reference will be made below. Figure 2 The second wireless communication system 100 is used to explain Figure 4 For the sake of simplicity, the following scenario will be used as a reference. Figure 4 In this scenario, Rx beamforming is being performed with respect to one or more Rx beams of RP 125. However, those skilled in the art will understand that the operations described below with reference to RP 125 can be performed with respect to multiple RPs, one or more base stations (BS), one or more gNBs, and / or one or more transmit and receive points (TRP). Furthermore, according to at least some example embodiments, the example Rx beamforming method can be used with a variety of different NR positioning technologies, examples of which include, but are not limited to, uplink time difference of arrival (UL-TDOA), UL angle of arrival (UL-AoA), enhanced cell ID (E-CID), and other NR UL positioning technologies.

[0089] A first example Rx beamforming method according to at least some example embodiments will be referenced below. Figure 4 , Figure 5A and Figure 5B Discussion; A second example Rx beamforming method based on at least some example embodiments will be referenced below. Figure 4 , Figure 6A and Figure 6B The discussion; and a third example Rx beamforming method based on at least some example embodiments will be referenced below. Figure 4 , Figure 7 and Figure 8 Discussion.

[0090] First example of Rx beamforming method

[0091] The following will refer to Figure 4 , Figure 5A and Figure 5B A first example Rx beamforming method is described based on at least some example embodiments. References Figure 4 In step S405, LMF 130 sends a UL location request to serving gNB 120, for example, according to a known 5G NR UL location procedure. According to at least some example embodiments, the UL location request is a request used to initiate a location procedure to obtain location information of UE 120.

[0092] In step S410, in response to receiving the UL positioning request sent in step S405, the serving gNB 120 performs measurements to determine the approximate location of the UE 110, and reports the measurements to the LMF 130, for example, by sending a measurement report indicating the measurements to the LMF 130. For example, the serving gNB 120 may measure at least one of the angle of arrival (AoA) and the distance relative to the UE 110. For example, the serving gNB 120 may measure the serving gNB AoA (i.e., the AoA of the serving gNB 120) relative to the UE 110 based on a reference signal (such as a UL positioning reference signal) sent from the UE. Examples of such UL positioning reference signals include, but are not limited to, SRS and other UL reference signals or UL positioning signals (e.g., Physical Random Access Channel (PRACH) signals). Furthermore, the serving gNB 120 can estimate the approximate distance to UE 110 (e.g., based on the Tracking Area (TA) associated with UE 110, Reference Received Power (RSRP), Received Signal Strength Indicator (RSSI), etc.). According to at least some example embodiments, a cell identifier (ID) or a portion of the ID may also be used. References will now be made to this section. Figure 5A In more detail, an example relationship is discussed between the approximate location (e.g., approximate location area) of UE 110 determined by the serving gNB 120 and the measurement values ​​that gNB 120 can send to LMF 130 in a measurement report.

[0093] Figure 5A This is a diagram illustrating a first example method for calculating the expected angle of arrival (eAoA) of the RP according to at least some example embodiments. As noted above, according to at least some example embodiments, the measurement report sent by the serving gNB 120 to the LMF 130 in step S410 may include one or more of the measured serving gNB AoA value and the estimated distance (e.g., from the UE to the serving gNB 120).

[0094] According to at least some example embodiments, the measured service gNB AoA value included in the measurement report can be reported in the form of an angular range (e.g., [θ1, θ2]). For example, as Figure 5A As shown, angles θ1 and θ2 from the angle range [θ1, θ2] can be defined as follows: angle θ1 is the angle between the first reference line 550A and the first service gNB tangent 560A, the first reference line 550A extending from the service gNB 120, the first service gNB tangent 560A extending from the service gNB 120 and tangent to a first side of the boundary of the approximate location region 505; and angle θ2 is the angle between the reference line 550A and the second service gNB tangent 560B, the second service gNB tangent 560B extending from the service gNB 120 and tangent to a second side of the boundary of the approximate location region 505, the second side of the boundary being opposite to the first side.

[0095] According to at least some example embodiments, the estimated distance included in the measurement report can be reported in the form of a range of distance values ​​(e.g., [d1, d2]). For example, as Figure 5A As shown, distance values ​​d1 and d2 can be the distances between the nearest and farthest points of intersection between the second reference line 550B and the boundary of the approximate location region 505. Figure 5A As shown, according to at least some example embodiments, the second reference line 550B passes through the center or central portion of the general location region 505 and intersects two different points on the boundary of the general location region 505 (e.g., a point closer to the service gNB 120 and a point farther away from the service gNB 120).

[0096] Therefore, the approximate location region 505 defined by the distance value range [d1,d2] and angle range [θ1,θ2] included in the measurement report sent to LMF 130 is an example of the approximate location of UE 110 indicated by the measurement reported from service gNB 120 to LMF 130 in step S410.

[0097] Alternatively, according to at least one example embodiment, UE 110 may report the approximate location of UE 110 directly to LMF 130 based on local estimation (e.g., according to a known location estimation method).

[0098] return Figure 4After LMF 130 receives an indication of the approximate location of UE 110 in step S410, in S415, LMF 130 calculates the RP eAoA (i.e., the eAoA of RP 125) relative to UE 110 (i.e., the angle or angle range corresponding to the direction in which UE 110 is located relative to RP 125). For example, according to at least some example embodiments, LMF 130 can use measurements from a measurement report received from serving gNB 120 (e.g., distance value range [d1, d2] and angle range [θ1, θ2]) to determine the approximate location area 505 of UE 110 as the approximate location of UE 110. Furthermore, because the second wireless network 100 knows the geographical location of RP 125, in step S415, LMF 130 can use the approximate location of UE 110 to determine the RP eAoA 515. For example, according to at least some example embodiments, based on the indicated location of UE 110 (e.g., approximate location region 505) and the known geographic location of RP 125, LMF 130 can determine: a first RP tangent 570A, which extends from RP 125 and is tangent to a third side of the boundary of approximate location region 505; and a second RP tangent 570B, which extends from RP 125 and is tangent to a fourth side of the boundary of approximate location region 505, the fourth side of the boundary being opposite to the third side. Figure 5A As shown, LMF 130 can define RP eAoA 515 as, for example, the angle or angle range between the first RP tangent 570A and the second RP tangent 570B.

[0099] After LMF 130 determines eAoA 515 in step S415, in step S420, LMF 130 may signal RPeAoA together with a UL measurement request (i.e., a request for RP 125 to perform UL positioning measurements) to RP 125. For example, LMF 130 may generate network-assisted signaling including the RP eAoA and send the network-assisted signaling and the UL measurement request to RP 125. For example, according to at least some example embodiments, RP eAoA 515 may be included in the network-assisted signaling sent to RP 125 in step S420 as a new ExpectedAoA IE.

[0100] According to at least some example embodiments, the ExpectedAoA IE can be signaled to the RP 125 as, for example, an 8-bit number representing a 1.5-degree granularity. In at least one embodiment, ExpectedAoA can be a single azimuth angle (i.e., in 2D space): ExpectedAoA_azimuth. In at least another embodiment, ExpectedAoA can be both azimuth and elevation angles (i.e., in 3D space): ExpectedAoA_azimuth and ExpectedAo_elevation. Furthermore, the ExpectedAoA signaling structure may also include an uncertainty window ExpectedAoA_uncertainty (e.g., used to represent a range of values) to assist the RP 125 in performing beamforming. The uncertainty window will be interpreted as a single value added / subtracted (e.g., + / -4, + / -22, etc.). For example, a 5-degree uncertainty for a 50-degree eAoA means that the RP can expect the RP AoA to be within 45-55 degrees. Therefore, by using the uncertainty window ExpectedAoA_uncertainty, the new ExpectedAoA IE can identify eAoA as an angular range.

[0101] For example, according to at least some example embodiments, the new ExpectedAoA IE can be constructed as follows:

[0102]

[0103] In step S425, in response to LMF 130 signaling the RP eAoA along with the UL measurement request to RP 125, RP 125 can select one or more Rx beams based on RP eAoA515.

[0104] For example, according to at least one example embodiment, in step S420, RP 125 selects an Rx beam for beamforming the reception of UL positioning reference signaling (e.g., SRS) for positioning by UE 110. RP 125 may select the Rx beam based on RPeAoA 515. For example, RP 125 may map RP eAoA 515 to an Rx beam code point by selecting the direction closest to the center of the Rx beam indicated by LMF RP eAoA 515.

[0105] In cases where the RP eAoA 515 includes uncertainties greater than one beam (e.g., ExpectedAoA_uncertainty), the RP may decide to perform an RX beam scan on a subset of beams (e.g., 2, 4, or more RX beams covering the uncertainty range), such as... Figure 5BAs shown. Figure 5B It is used to explain by Figure 5A A diagram illustrating Rx beam selection performed by RP. Figure 5B In the example shown, RP 125 can perform RX beam search by relying on the expected AoA range included in the network-assisted signaling. RP 125 determines that a first subset of the four Rx beams corresponds to RP eAoA 515, and therefore selects the first subset of Rx beams (i.e., the first Rx beams 530) to receive the four SRS of UE 110 for UL positioning, respectively. The selection of Rx beams using the expected AoA signaling still represents significant beam training and scanning overhead, as RP 125 only needs to receive four SRSs for positioning resources in order to determine which beam from the four first Rx beams 530 is most desirable for receiving the SRS of UE 110.

[0106] Therefore, as discussed above, according to at least some example embodiments, RP 125 can use RP eAoA 515 to select an Rx beam or a subset of Rx beams for measuring the UL positioning reference signal (e.g., SRS) of UE 110. For example, RP 125 can determine when to select multiple Rx beams based on an uncertainty value associated with RP eAoA 515. Furthermore, according to at least one other example embodiment, RP 125 can determine the RX beamwidth based on the uncertainty value (e.g., if the uncertainty range is low, RP 125 can select a narrow RX beam, while if the uncertainty range is higher, RP 125 can select a wider RX beam and / or multiple RX beams).

[0107] In step S430, the serving gNB 120 signals to the UE 110 to configure the UE 110 to transmit a UL positioning reference signal (e.g., periodic SRS (SRS-P or P-SRS)) for the UE 110. For example, in step S430, the serving gNB 120 may send a UL positioning reference signal configuration message to the UE 110 based on known 5G NR technology. In step S435, the UE sends the UL positioning reference signal (e.g., periodic SRS (SRS-P or P-SRS)) to the RP 125, for example, in a manner configured based on the UL positioning reference signal configuration message received by the UE 110 in response to the UL positioning reference signal configuration message received in step S430. In step S440, the serving gNB 120 and RP 125 perform UL positioning measurements based on the UE 110's UL positioning reference signal. In step S445, the serving gNB 120 and RP 125 report the UL measurements performed in step S440 to the LMF 130. According to at least some example embodiments, steps S430, S435, S440, and S445 are performed according to a known 5G NR UL positioning procedure. Furthermore, according to at least some example embodiments, in step S440, RP 125 uses only one or more of the selected Rx beams selected in step S425 (e.g., Figure 5B The first Rx beam 530 is used, and the positioning measurement is performed based on the UL positioning reference signal (e.g., SRS) of the UE 110. Therefore, by reducing the number of Rx beams included in the beam scanning operation, the amount of network resources associated with performing beam scanning operations for UL locations is reduced.

[0108] Second example of Rx beamforming method

[0109] Now refer to the following Figure 4 , Figure 6A and Figure 6B A second example Rx beamforming method is discussed according to at least some example embodiments. The second example Rx beamforming method will be discussed with reference to a scenario in which a second wireless network 100, in place of or attached to RP 125, also includes a neighboring gNB 127. According to at least some example embodiments, one or more Rx beams attached to or attached to RP 125 to determine one or more UL positioning reference signals (e.g., SRS) for receiving UE 110, for receiving UE 110, can be determined with respect to the neighboring gNB, as discussed above regarding the first example Rx beamforming method. For example, Figure 6A This is a diagram used to explain a second example method for calculating eAoA according to at least some example embodiments, and Figure 6B This is for explaining the invention based on at least some example embodiments. Figure 6A A diagram illustrating Rx beam selection performed by a neighboring next-generation NodeB (gNB).

[0110] refer to Figure 4 In the second example Rx beamforming method, instead of or appended to determining RP eAoA 515 based on approximate location region 505, in step S415, LMF 130 determines neighboring gNB eAoA 620 based on the cell coverage area 610 of serving gNB 120, as... Figure 6A As shown. According to at least some example embodiments, LMR 130 can determine RP eAoA 515 based on approximate location region 505 with LMF 130 (as referenced above). Figure 4 and Figure 5A The same method is used to determine neighboring gNBs eAoA 620 based on the cell coverage area 610 (e.g., based on the first neighboring gNB tangent 670A and the second neighboring gNB tangent 670B).

[0111] In step S420, LMF 130 may signal the neighboring gNB eAoA 620 along with the UL measurement request to the serving gNB 120. For example, LMF 130 may use the same signaling structure (e.g., the new ExpectedAoA IE) discussed above with reference to the first example beamforming method and RP eAoA 515 to signal the neighboring gNB eAoA 620.

[0112] In step S425, in response to LMF 130 signaling neighbor gNB eAoA 620 along with the UL measurement request to neighbor gNB 127, gNB 127 can select one or more Rx beams based on neighbor gNB eAoA 620. According to at least some example embodiments, neighbor gNB 127 can select one or more Rx beams based on neighbor gNB eAoA 620 (and associated uncertainty values) in the same manner as RP 125 selects the first Rx beam 530 based on RP eAoA 515. Figure 6B The second Rx beam (630) in the middle.

[0113] For the second example Rx beamforming method, steps S430 to S435 can be performed in the same manner as described above with reference to the first example Rx beamforming method.

[0114] Third example: Rx beamforming method

[0115] Now refer to the following Figure 4 , Figure 7 and Figure 8 A third example of an Rx beamforming method based on at least some example embodiments is discussed. This third example Rx beamforming method will be discussed with reference to a scenario in which the second wireless network 100 includes neighboring gNB 127 and RP 125. For simplicity of explanation, the following explanation primarily refers to the scenario where eAoA is specifically addressing RP125. Figure 4 , Figure 7 and Figure 8 However, those skilled in the art will understand that the operations described below with reference to RP 125 can be performed to determine (multiple) eAoA for multiple RPs, one or more base stations (BSs), one or more gNBs, and / or one or more transmit and receive points (TRPs).

[0116] Figure 7 This is a diagram used to explain a third example method for calculating eAoA according to at least some example embodiments, and Figure 8 This is for explaining according to at least some example embodiments. Figure 7 The diagram illustrates an example of angle calculation in the third example method for calculating eAoA.

[0117] refer to Figure 7 and Figure 8 The example objective of the third example Rx beamforming method is to derive the distance d from RP125 to UE 110 for LMF 130. x And derive the beam steering angle of the RP 125. According to at least some example embodiments, distance d x and beam steering angle This can be derived without RP 125 allocating any resources or performing any measurements. According to at least some example embodiments, LMF 130 can provide network-aided signaling to RP 125, including steering angles for eAoA and the expected RSTD, respectively. and distance d x This allows the RP 125 to begin using these signals for beam selection and positioning measurements.

[0118] According to at least one example embodiment, if two gNBs (e.g., serving gNB 120 and neighboring gNB 127) cooperate regarding the performance of positioning measurements, then RP 125 can derive the steering angle. and distance d x Initial value. Steering angle. and distance d x Ultimately, the measurement parameters are for the RP 125, but initial setup is required. Once the UE 110 sends the SRS and the RP 125 receives the SRS, the positioning measurements can be updated for higher positioning accuracy.

[0119] According to at least some example embodiments, the following components are measured and / or calculated:

[0120] • Distance from serving gNB 120 (gNB1) to UE 110

[0121] • Distance from gNB1 to RP only as well as

[0122] ·angle (That is, between (i) the direction of UE 110 relative to serving gNB 120 and (ii) the direction of neighbor gNB 127 relative to serving gNB 120) and (That is, between (i) the direction of UE 110 relative to serving gNB 120 and (ii) the direction of RP 125 relative to serving gNB 120)

[0123] ο in Figure 8 middle,

[0124] ο in Figure 8 middle, as well as

[0125] ο in Figure 8 middle,

[0126] First, the distance d can be determined, for example, according to the following expression 1. x :

[0127]

[0128] Next, based on and Figure 7 The distances d1 and d2 shown are: RP1 and d x The corresponding line defines the triangle (i.e., The steering angle can be determined, for example, according to the following expression 2.

[0129]

[0130] Therefore, the LMF 130 can derive the beam steering angle of RP only (e.g., RP 125) based on Expressions 1 and 2 discussed above. According to at least some example embodiments, the line between UE 110 and serving gNB 120 (e.g., Figure 7 The line associated with distance d1) and the line between UE 110 and neighbor gNB 127 (e.g., Figure 7The line associated with distance d2, each needs to be a line of sight (LoS) to satisfy the triangle shape.

[0131] In addition, the line between UE 110 and only RP (e.g., RP 125) (e.g., Figure 7 Midpoint and distance d x The associated line (LoS) may or may not be LoS. For example, there may be an obstacle between UE 110 and RP 125. However, the direction from RP 125 towards UE 110 can be derived. Therefore, according to at least some example embodiments, LMF 130 (or TRP) can collect measurements and simply provide eAoA to assist beam management without processing a localization algorithm. Furthermore, two TRP measurements may be sufficient to estimate eAoA, which can result in low-complexity computation. By providing eAoA, beam search can be reduced. In addition, the network can check further measurements regardless of whether the line between the UE and the TRP that is determining the eAoA for it is LoS or NLoS. Furthermore, by using one or more RP-only (i.e., one or more RP-only APs), the UE's position can be determined with high accuracy using high-accuracy localization.

[0132] Although the terms first, second, etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this disclosure, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. As used herein, the term "and / or" includes any and all combinations of one or more of the related listed items.

[0133] When an element is described as "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Conversely, when an element is described as "directly connected" or "directly coupled" to another element, there are no intermediate elements. Other terms used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between" and "directly between", "adjacent" and "directly adjacent", etc.).

[0134] The terminology used herein is for the purpose of describing particular embodiments only and is not restrictive. As used herein, unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “the” should also include the plural forms. It will be further understood that the terms “comprises,” “comprising,” “includes,” and / or “including” as used herein specify the presence of the stated feature, integral, step, operation, element, and / or component, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof.

[0135] It should also be noted that in some alternative implementations, the functions / actions described may not occur in the order shown in the diagram. For example, depending on the functions / actions involved, two diagrams shown consecutively may actually be executed substantially simultaneously, or sometimes in reverse order.

[0136] Specific details have been provided above to provide a thorough understanding of the exemplary embodiments. However, those skilled in the art will understand that the exemplary embodiments can be practiced without these specific details. For example, systems may be illustrated as block diagrams to avoid obscuring the exemplary embodiments with unnecessary details. In other instances, well-known processes, structures, and techniques may be shown without unnecessary details to avoid obscuring the exemplary embodiments.

[0137] As described herein, illustrative embodiments are described using action and symbolic representations of reference operations (e.g., in the form of flowcharts, diagrams, data flow diagrams, structural diagrams, block diagrams, etc.). These operations can be implemented as program modules or functional procedures, including routines, programs, objects, components, data structures, etc., which perform specific tasks or implement specific abstract data types, and can be implemented using existing hardware, such as existing user equipment, UEs, base stations, evolved NodeBs (eNBs), remote radio heads (RRHs), next-generation NodeBs (gNBs), femtocells, small cell base stations, network controllers, computers, central units (CUs), distributed units (DUs), ng-eNBs, transmit and receive points (TRPs), receive points (RPs), other radio access or backhaul network elements, etc. Such existing hardware can be a processing or control circuit system, such as, but not limited to, one or more processors, one or more central processing units (CPUs), one or more controllers, one or more arithmetic logic units (ALUs), one or more digital signal processors (DSPs), one or more microcomputers, one or more field-programmable gate arrays (FPGAs), one or more system-on-a-chip (SoCs), one or more programmable logic units (PLUs), one or more microprocessors, one or more application-specific integrated circuits (ASICs), or any other one or more devices capable of responding to and executing instructions in a defined manner.

[0138] Although flowcharts can describe operations as sequential processes, many operations can be executed in parallel, concurrently, or simultaneously. Furthermore, the order of operations can be rearranged. A process may terminate when its operations are completed, but it may also have additional steps not included in the diagram. A process can correspond to a method, function, procedure, subroutine, subroutine, etc. When a process corresponds to a function, its termination can correspond to the function returning to the calling function or the main function.

[0139] As disclosed herein, the terms "storage medium," "computer-readable storage medium," or "non-transitory computer-readable storage medium" can refer to one or more devices for storing data, including read-only memory (ROM), random access memory (RAM), magnetic RAM, core memory, disk storage media, optical storage media, flash memory devices, and / or other tangible machine-readable media for storing information. The term "computer-readable medium" can include, but is not limited to, portable or fixed storage devices, optical storage devices, and a variety of other media capable of storing, containing, or carrying instructions and / or data.

[0140] Furthermore, the example embodiments can be implemented using hardware, software, firmware, middleware, microcode, hardware description languages, or any combination thereof. When implemented in software, firmware, middleware, or microcode, program code or code segments for performing necessary tasks can be stored in a machine or computer-readable medium, such as a computer-readable storage medium. When implemented in software, one or more processors will perform the necessary tasks. For example, as described above, according to one or more example embodiments, at least one memory may include or store computer program code, and at least one memory and computer program code can be configured, together with at least one processor, to cause network elements or network devices to perform necessary tasks. Furthermore, the processor, memory, and example algorithms encoded as computer program code serve as components for providing or causing the execution of the operations discussed herein.

[0141] A code segment of computer program code can represent a procedure, function, subroutine, program, routine, subroutine, module, software package, class, or any combination of instructions, data structures, or program statements. A code segment can be coupled to another code segment or hardware circuit by passing and / or receiving information, data, arguments, parameters, or memory contents. Information, arguments, parameters, data, etc., can be passed, forwarded, or transmitted via any suitable technology, including memory sharing, message passing, token passing, network transmission, etc.

[0142] The terms “including” and / or “having” as used herein are defined as comprising (i.e., open language). The term “coupling” as used herein is defined as connected, although not necessarily direct or mechanical. Terms derived from the word “indicating” (e.g., “indicates” and “indication”) are intended to encompass all the various techniques used to transmit or reference indicated objects / information. Some (but not all) examples of techniques that can be used to transmit or reference indicated objects / information include the transmission of indicated objects / information, the transmission of identifiers of indicated objects / information, the transmission of information used to generate indicated objects / information, the transmission of certain parts or portions of indicated objects / information, the transmission of some derivative of indicated objects / information, and the transmission of a symbol representing indicated objects / information.

[0143] According to the example embodiments, the UE, base station, eNB, RRH, gNB, femtocell, network controller, computer, central unit (CU), ng-eNB, other radio access or backhaul network elements, etc., can be (or include) hardware, firmware, hardware executing software, or any combination thereof. Such hardware may include processing or control circuitry, such as, but not limited to, one or more processors, one or more CPUs, one or more controllers, one or more ALUs, one or more DSPs, one or more microcomputers, one or more FPGAs, one or more SoCs, one or more PLUs, one or more microprocessors, one or more ASICs, or any other one or more devices capable of responding to and executing instructions in a defined manner.

[0144] The benefits, other advantages, and solutions to problems have been described above with reference to specific embodiments of the present invention. However, the benefits, advantages, solutions to problems, and any element(s) that may cause or lead to such benefits, advantages, or solutions, or cause such benefits, advantages, or solutions to become more apparent, should not be construed as key, essential, or fundamental features or elements of any or all claims.

Claims

1. A method for a location management device in a wireless communication system, the method comprising: At the location management device, at least based on a first measurement report received from a serving network device serving the user equipment and the location of the serving network device, the distance from the first network device to the user equipment and the beam steering angle are determined, wherein the beam steering angle is the angle between the direction of the user equipment relative to the first network device and the direction of the serving network device relative to the first network device. Determine network auxiliary signaling; as well as Send the determined network auxiliary signaling to the first network device in the wireless communication system; as well as A second measurement report is received from the first network device or the serving network device, the second measurement report being associated with a positioning measurement of the user equipment performed by the first network device using one or more receiving beams, and The network-aided signaling determination includes: determining the expected angle of arrival for the first network device based at least on the distance and the beam steering angle, the network-aided signaling including the expected angle of arrival, and The expected angle of arrival is an angle or range of angles corresponding to the direction in which the user equipment is located relative to the first network device, and The one or more receiving beams are selected by the first network device based on the expected angle of arrival.

2. The method of claim 1, wherein the first measurement report comprises at least one of the following: The measured angle of arrival indicates an angle or range of angles corresponding to the direction in which the user equipment is located relative to the serving network device. The estimated distance or estimated distance range from the user equipment to the serving network device. The approximate location of the user equipment calculated by the service network device, or The service network device provides cell coverage.

3. The method of claim 2, wherein the determination of the expected angle of arrival comprises: The expected angle of arrival is determined based at least on the information obtained about the approximate location of the user equipment and the location of the first network device.

4. A method for a first network device in a wireless communication system, the method comprising: At the first network device, network auxiliary signaling is received from a location management device in the wireless communication system. The network auxiliary signaling includes the expected angle of arrival of the first network device relative to the user equipment, wherein the expected angle of arrival is determined based at least on the distance from the first network device to the user equipment and a beam steering angle, wherein the beam steering angle is the angle between the direction of the user equipment relative to the first network device and the direction of the serving network device serving the user equipment relative to the first network device. The expected angle of arrival is an angle or angle range corresponding to the direction in which wireless transmissions from the user equipment arrive at the first network device; Select one or more receiving beams based on the expected angle of arrival; Using the selected one or more receive beams, receive uplink positioning reference signals from the user equipment; Perform positioning measurements on the received uplink positioning reference signal; as well as Send a second measurement report associated with the positioning measurement to the location management device.

5. The method according to any one of claims 1 to 4, wherein the first network device is a receiving point of a network device in the wireless communication system, and the network device is a non-service network device performing positioning measurements.

6. A location management device in a wireless communication system, the location management device comprising: Memory stores executable instructions for a computer; as well as A processor is configured to execute the computer-executable instructions, wherein the computer-executable instructions include: Based at least on a first measurement report received from a serving network device serving the user equipment, and the location of the serving network device, the distance from the first network device to the user equipment and the beam steering angle are determined, wherein the beam steering angle is the angle between the direction of the user equipment relative to the first network device and the direction of the serving network device relative to the first network device. Determine network auxiliary signaling, Send the determined network assistance signaling to the first network device in the wireless communication system; and A second measurement report is received from the first network device or the serving network device, the second measurement report being associated with a positioning measurement of the user equipment performed by the first network device using one or more receiving beams, and The network-aided signaling determination includes: determining the expected angle of arrival for the first network device based at least on the distance and the beam steering angle, the network-aided signaling including the expected angle of arrival, and The expected angle of arrival is an angle or range of angles corresponding to the direction in which the user equipment is located relative to the first network device, and The one or more receiving beams are selected by the first network device based on the expected angle of arrival.

7. The location management device according to claim 6, wherein the first measurement report comprises at least one of the following: The measured angle of arrival indicates an angle or range of angles corresponding to the direction in which the user equipment is located relative to the serving network device. The estimated distance or estimated distance range from the user equipment to the serving network device. The approximate location of the user equipment calculated by the service network device, or The service network device provides cell coverage.

8. The location management device according to claim 7, wherein the determination of the expected angle of arrival includes: The expected angle of arrival is determined based at least on the information obtained about the approximate location of the user equipment and the location of the first network device.

9. A first network device for a wireless communication system, the first network device comprising: Memory stores executable instructions for a computer; as well as A processor is configured to execute the computer-executable instructions, wherein the computer-executable instructions include: At the first network device, network-assisted signaling is received from a location management device in the wireless communication system. The network-assisted signaling includes the expected angle of arrival of the first network device relative to the user equipment, wherein the expected angle of arrival is determined based at least on the distance from the first network device to the user equipment and a beam steering angle, wherein the beam steering angle is the angle between the direction of the user equipment relative to the first network device and the direction of a serving network device serving the user equipment relative to the first network device. The expected angle of arrival is an angle or range of angles corresponding to the direction in which wireless transmissions from the user equipment arrive at the first network device. One or more receiving beams are selected based on the expected angle of arrival. Using the selected one or more receive beams, receive uplink positioning reference signals from the user equipment. Perform positioning measurements on the received uplink positioning reference signal, and Send a second measurement report associated with the positioning measurement to the location management device.

Images