CN-116686308-B - Low complexity Receive (RX) beamforming for Uplink (UL) positioning

CN116686308BCN 116686308 BCN116686308 BCN 116686308BCN-116686308-B

Abstract

A method includes obtaining, at a location management device of a wireless communication system, information indicative of an approximate location of a user equipment, determining network assistance signaling based on the obtained information of the approximate location of the user equipment, and sending the determined network assistance signaling to a first network device of the wireless communication system, the determination of network assistance signaling including determining an expected angle of arrival for the first network device and including the expected angle of arrival in the network assistance signaling, 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.

Inventors

TAO TAO
YIN DAZHONG
R. Keating

Assignees

上海诺基亚贝尔股份有限公司
诺基亚通信公司

Dates

Publication Date: 20260508
Application Date: 20201105

Claims (9)

1. A method for a location management device in a wireless communication system, the method comprising: Determining, at the location management device, a distance from a first network device to a user equipment and a beam steering angle based at least on a first measurement report received from a serving network device serving the user equipment and a location of the serving network device, wherein the beam steering angle is an angle between a direction of the user equipment relative to the first network device and a direction of the serving network device relative to the first network device; Determining network assistance signaling, and Transmitting the determined network assistance signaling to the first network device in the wireless communication system, and Receiving a second measurement report from the first network device or the serving network device, the second measurement report being associated with positioning measurements of the user equipment performed by the first network device using one or more receive beams, and Wherein the determining network assistance signaling comprises determining an expected angle of arrival for the first network device based at least on the distance and the beam steering angle, the network assistance signaling comprising the expected angle of arrival, and The expected angle of arrival is an angle or range of angles corresponding to a direction in which the user equipment is located relative to the first network device, and Wherein the one or more receive 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 measured angle of arrival, indicative of an angle or range of angles corresponding to a direction in which the user equipment is located relative to the serving network apparatus, An estimated distance or range of estimated distances from the user equipment to the serving network apparatus, The approximate location of the user equipment calculated by the serving network apparatus, or Cell coverage of the serving network apparatus.
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 obtained information of 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: Receiving, at the first network device, network assistance signaling from a location management device in the wireless communication system, the network assistance signaling comprising an expected angle of arrival of the first network device with respect to a user equipment, wherein the expected angle of arrival is determined based at least on a distance from the first network device to the user equipment and a beam steering angle, wherein the beam steering angle is an angle between a direction of the user equipment with respect to the first network device and a direction of a serving network device serving the user equipment with respect to the first network device; the expected angle of arrival is an angle or range of angles corresponding to a direction from which wireless transmissions from the user equipment arrive at the first network device; selecting one or more receive beams based on the expected angle of arrival; receiving uplink positioning reference signals from the user equipment using the selected one or more receive beams; Performing positioning measurements on the received uplink positioning reference signals, and A second measurement report associated with the positioning measurement is sent to the location management device.
5. The method of any of claims 1-4, wherein the first network device is a receiving point of a network device in the wireless communication system, the network device being a non-serving network device that makes location measurements.
6. A location management apparatus in a wireless communication system, the location management apparatus comprising: a memory storing computer executable instructions, and A processor configured to execute the computer-executable instructions, wherein the computer-executable instructions comprise: Determining a distance from a first network device to a user equipment and a beam steering angle based at least on a first measurement report received from a serving network device serving the user equipment, and a location of the serving network device, wherein the beam steering angle is an angle between a direction of the user equipment relative to the first network device and a direction of the serving network device relative to the first network device, A determination is made of network-assisted signaling, Transmitting the determined network assistance signaling to the first network device in the wireless communication system, and Receiving a second measurement report from the first network device or the serving network device, the second measurement report being associated with positioning measurements of the user equipment performed by the first network device using one or more receive beams, and Wherein the determining network assistance signaling comprises determining an expected angle of arrival for the first network device based at least on the distance and the beam steering angle, the network assistance signaling comprising the expected angle of arrival, and The expected angle of arrival is an angle or range of angles corresponding to a direction in which the user equipment is located relative to the first network device, and Wherein the one or more receive beams are selected by the first network device based on the expected angle of arrival.
7. The location management device of claim 6, wherein the first measurement report comprises at least one of: The measured angle of arrival, indicative of an angle or range of angles corresponding to a direction in which the user equipment is located relative to the serving network apparatus, An estimated distance or range of estimated distances from the user equipment to the serving network apparatus, The approximate location of the user equipment calculated by the serving network apparatus, or Cell coverage of the serving network apparatus.
8. The location management device of claim 7, wherein the determination of the expected angle of arrival comprises: the expected angle of arrival is determined based at least on the obtained information of the approximate location of the user equipment and the location of the first network device.
9. A first network device of a wireless communication system, the first network device comprising: a memory storing computer executable instructions, and A processor configured to execute the computer-executable instructions, wherein the computer-executable instructions comprise: Receiving, at the first network device, network assistance signaling from a location management device in the wireless communication system, the network assistance signaling comprising an expected angle of arrival of the first network device with respect to a user equipment, wherein the expected angle of arrival is determined based at least on a distance from the first network device to the user equipment and a beam steering angle, wherein the beam steering angle is an angle between a direction of the user equipment with respect to the first network device and a direction of a serving network device serving the user equipment with respect to the first network device, The expected angle of arrival is an angle or range of angles corresponding to a direction from which wireless transmissions from the user equipment arrive at the first network device, One or more receive beams are selected based on the expected angle of arrival, Using the one or more selected receive beams, receiving uplink positioning reference signals from the user equipment, Performing positioning measurements on the received uplink positioning reference signals, and A second measurement report associated with the positioning measurement is sent to the location management device.

Description

Low complexity Receive (RX) beamforming for Uplink (UL) positioning Technical Field One or more example embodiments relate generally to wireless communications and, more particularly, to facilitating positioning in third generation partnership project (3 GPP) fifth generation (5G) New Radio (NR) networks. Background Positioning is one of the key drivers of various vertical areas and use cases that third generation partnership project (3 GPP) fifth generation (5G) New Radio (NR) radios are intended to support. By acquiring knowledge about the approximate/precise location of the device, applications such as location-based services, autopilot, and industrial internet of things (IoT) may be made possible with 5G systems. Although accurate positioning may generally be achieved through Global Navigation Satellite System (GNSS) technology, such as Global Positioning System (GPS) technology, for some scenarios (e.g., indoor scenarios such as factory automation or warehouse management), the accuracy provided by such technology may be inadequate. Accordingly, RAT-dependent positioning methods based on downlink/uplink signals (e.g., positioning Reference Signals (PRS)/Sounding Reference Signals (SRS)) developed by 3GPP standards have been widely studied in Long Term Evolution (LTE)/NR. Disclosure of Invention According to at least some example embodiments, a method includes obtaining, at a location management device of a wireless communication system, information indicative of an approximate location of a user equipment, determining network assistance signaling based on the obtained information of the approximate location of the user equipment, and sending the determined network assistance signaling to a first network device of the wireless communication system, the determination of network assistance signaling including determining an expected angle of arrival for the first network device and including the expected angle of arrival in the network assistance signaling, the expected angle of arrival being an angle or range of angles corresponding to a direction in which wireless transmissions from the user equipment arrive at the first network device. Acquiring information indicative of the approximate location of the user equipment may include receiving a measurement report from a serving 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 serving network device serving the user equipment. The measurement report may include at least one of an angle of arrival indicating a measurement of an angle or range of angles corresponding to a direction of arrival of the wireless transmission from the user equipment at the serving network apparatus, an estimated distance or range of distances from the user equipment to the serving network apparatus, an approximate location of the user equipment calculated by the serving network apparatus, or a cell coverage of the serving network apparatus. The determining of the expected angle of arrival may comprise determining the expected angle of arrival based at least on the obtained information of the approximate location of the user equipment and the location of the first network device. According to at least some example embodiments, a method includes receiving, at a serving network apparatus, a location request from a location management apparatus, determining, at the serving network apparatus, an approximate location of a user equipment in response to receiving the location request, the serving network apparatus serving the user equipment, and sending, by the serving network apparatus to the location management apparatus, a measurement report indicating the determined approximate location of the user equipment. Determining the approximate location of the user equipment may include receiving an uplink positioning reference signal from the user equipment, measuring an angle of arrival with respect to the user equipment based on the received uplink positioning reference signal, the angle of arrival being a range of angles corresponding to a direction in which the user equipment is located with respect to the serving network apparatus, measuring a distance or range of distances from the user equipment to the serving network apparatus 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. According to at least some example embodiments, a method of a first network device of a wireless communication system includes receiving, at the first network device, network assistance signaling from a location management device of the wireless communication system, the network assistance signaling including an expected angle of arrival of the first network device with respect to a user equipment, the expected angle of arrival being an angle or range of angles corresponding t