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EP-4285659-B1 - SYSTEMS AND METHODS FOR INDICATING POSITIONING INFORMATION IN WIRELESS COMMUNICATION SYSTEMS

EP4285659B1EP 4285659 B1EP4285659 B1EP 4285659B1EP-4285659-B1

Inventors

  • PAN, YU
  • ZHENG, Guozeng
  • JIANG, Chuangxin
  • ZHANG, SHUJUAN
  • LU, ZHAOHUA

Dates

Publication Date
20260513
Application Date
20210402

Claims (4)

  1. A wireless communication method, comprising: receiving, by a wireless communication device User Equipment, UE, (104; 204) from a network, Transmission and Reception Point, TRP, transmission Timing Error Group, TEG, information; determining, by the wireless communication device User Equipment, UE, (104; 204) reception TEG information according to the TRP transmission TEG information; and in Downlink Time Difference of Arrival, DL-TDOA, reporting, by the wireless communication device User Equipment, UE (104; 204) to the network, downlink measurement results, identifier of each of one or more reference TRPs, and the UE reception TEG information, wherein the downlink measurement is reported via a number of groups, and the downlink measurements in each of the group are determined relative to a respective one of the one or more reference TRPs and respective one of the UE reception TEG information.
  2. A wireless communication device User Equipment, UE (104; 204), comprising: at least one processor configured to: receive, via a transceiver from a network, Transmission and Reception Point, TRP, transmission Timing Error Group, TEG, information; determine, by the wireless communication device User Equipment, UE, (104; 204) reception TEG information according to the TRP transmission TEG information; and in Downlink Time Difference of Arrival, DL-TDOA, report, via the transceiver to the network, downlink measurement results, identifier of each of one or more reference TRPs, and the UE TEG information, wherein the downlink measurement is reported via a number of groups, and the downlink measurements in each of the group are determined relative to a respective one of the one or more reference TRPs and a respective one of the UE reception TEG information.
  3. A wireless communication method, comprising: sending, by a network to a wireless communication device User Equipment, UE (104; 204), Transmission and Reception Point, TRP, transmission Timing Error Group, TEG, information, for the determination by the the wireless communication device User Equipment, UE, (104; 204) reception TEG information according to the TRP transmission TEG information; and in Downlink Time Difference of Arrival, DL-TDOA, receiving, by the network from the wireless communication device User Equipment, UE (104; 204), downlink measurement results, identifier of each of one or more reference TRPs, and the UE reception TEG information, wherein the downlink measurement is reported via a number of groups, and the downlink measurements in each of the group are determined relative to a respective one of the one or more reference TRPs and the respective UE reception TEG information.
  4. A network, comprising: at least one processor configured to: send, via a transmitter to a wireless communication device User Equipment, UE (104; 204), Transmission and Reception Point, TRP, transmission Timing Error Group, TEG, information, for the determination by the wireless communication device User Equipment, UE, (104; 204) TEG information according to the TRP transmission TEG information; and in Downlink Time Difference of Arrival, DL-TDOA, receive, via the transmitter from the wireless communication device User Equipment, UE (104; 204), downlink measurement results, identifier of each of one or more reference TRPs, and the UE reception TEG information, wherein the downlink measurement is reported via a number of groups, and the downlink measurements in each of the group are determined relative to a respective one of the one or more reference TRPs and the respective UE reception TEG information.

Description

TECHNICAL FIELD The disclosure relates generally to wireless communication, including but not limited to obtaining positioning information in wireless communication systems. BACKGROUND The standardization organization Third Generation Partnership Project (3GPP) is currently in the process of specifying a new Radio Interface called 5G New Radio (5G NR) as well as a Next Generation Packet Core Network (NG-CN or NGC). The 5G NR will have three main components: a 5G Access Network (5G-AN), a 5G Core Network (5GC), and a User Equipment (UE). In order to facilitate the enablement of different data services and requirements, the elements of the 5GC, also called Network Functions (NFs), have been simplified with some of them being software based so that they could be adapted according to need. INTEL CORPORATION: "NR Positioning Enhancements" (3GPP DRAFT; RP-210627), ERICSSON: "Techniques mitigating UE Rx/Tx timing delays" (3GPP DRAFT; R1-2101754), WO 2020/146820 A1, US 2021/075573 A1, US 6 230 018 B1, and US 9 173 183 B1 are related prior art, SUMMARY The invention is specified by the independent claims. Preferred embodiments are defined in the dependent claims. In the following description, although numerous features may be designated as optional, it is nevertheless acknowledged that all features comprised in the independent claims are not to be read as optional. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates an example wireless communication system in which techniques disclosed herein can be implemented, in accordance with some embodiments of the present disclosure.FIG. 2 illustrates a block diagram of an example wireless communication system for transmitting and receiving wireless communication signals (e.g., orthogonal frequency-division multiplexing (OFDM) or orthogonal frequency-division multiple access (OFDMA) signals) in accordance with some embodiments of the present disclosure.FIG. 3 illustrates a high-level schematic of a 5G core positioning architecture for NG-RAN in accordance with some embodiments of the present disclosure.FIGs. 4, 5, 6, 7, 8, 9, 10, 11, and 12 illustrate flow charts of example wireless communication processes in accordance with some embodiments of the present disclosure. DETAILED DESCRIPTION Various example embodiments of the present solution are described below with reference to the accompanying figures to enable a person of ordinary skill in the art to make and use the present solution. As would be apparent to those of ordinary skill in the art, after reading the present disclosure, various changes or modifications to the examples described herein can be made without departing from the scope of the present solution. Thus, the present solution is not limited to the example embodiments and applications described and illustrated herein. Additionally, the specific order or hierarchy of steps in the methods disclosed herein are merely example approaches. Based upon design preferences, the specific order or hierarchy of steps of the disclosed methods or processes can be re-arranged while remaining within the scope of the present solution. Thus, those of ordinary skill in the art will understand that the methods and techniques disclosed herein present various steps or acts in a sample order, and the present solution is not limited to the specific order or hierarchy presented unless expressly stated otherwise. Accurate and precise positioning of UE is important in 5G NR technology. There are several methods of determining the position of the UE, including timing-based positioning methods such as the downlink/uplink time difference of arrival (DL/UL-TDOA) method and the multi-round trip time (multi-RTT) method. However, in timing-based positioning methods, there are timing delays or timing errors between the baseband and antenna both at the transmission/reception point (TRP) and the UE. This causes issues in measurement results for timing-based positioning methods which require cancellation and/or re-measurements to obtain greater accuracy. There are timing error groups (TEGs) in which the measurements or signals have the same timing delays or timing errors. The present disclosure improves measuring and reporting timing errors and timing error groups for different positioning methods. 1. Mobile Communication Technology and Environment FIG. 1 illustrates an example wireless communication system 100 in which techniques disclosed herein can be implemented, in accordance with some embodiments of the present disclosure. In the following discussion, the wireless communication system 100 may implement any wireless network, such as a cellular network or a narrowband Internet of things (NB-IoT) network. Such an example system 100 includes a base station (BS) 102 (also referred to as a wireless communication node) and UE 104 (also referred to as a wireless communication device) that can communicate with each other via a communication link 110 (e.g., a wireless communication channel), and a clus