Method and reporting of carrier phase measurement reporting

Abstract

The invention relates to a carrier phase measurement reporting method and reporting. An apparatus includes at least one processor; and at least one memory storing instructions that, when executed by the processor, cause the apparatus to at least: receive a request to report a carrier phase measurement for a first detected arrival signal path of a reference signal; detecting a plurality of arrival signal paths including a first detected arrival signal path from the reference signal; determining line-of-sight indicator values for the detected plurality of arrival signal paths including the first detected arrival signal path; and sending a report based on the determined line-of-sight indicator value for the first detected arrival signal path being not greater than at least one other line-of-sight indicator value for at least one other detected arrival signal path of the plurality of arrival signal paths, the report includes at least one carrier phase measurement for at least one of the plurality of arrival signal paths.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to U.S. application No. 18 / 437,505, filed on February 9, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] Example and non-limiting example embodiments generally relate to communications, and more particularly to methods and reports of carrier phase measurement reporting. Some example embodiments may generally relate to mobile or wireless telecommunication systems, such as 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE), fifth generation (5G) radio access technology (RAT), new radio (NR) access technology, sixth generation (6G), and / or other communication systems. For example, certain example embodiments may relate to systems and / or methods for providing carrier phase positioning. Background Art

[0004] It is known that a communication device accesses a communication network via an access network node. Summary of the Invention

[0005] According to one aspect, a device includes at least one processor and at least one non-volatile memory storing instructions that, when executed by the at least one processor, cause the device to at least: receive a request to report a carrier phase measurement of a first detected arrival signal path for a reference signal; detect multiple arrival signal paths including the first detected arrival signal path from the reference signal; determine a line-of-sight indicator value for the detected multiple arrival signal paths including the first detected arrival signal path; and send a report based on the determined line-of-sight indicator value for the first detected arrival signal path being no greater than at least one other line-of-sight indicator value for at least one other detected arrival signal path in the multiple arrival signal paths, the report including at least one carrier phase measurement for at least one arrival signal path in the multiple arrival signal paths.

[0006] According to one aspect, a device includes at least one processor and at least one non-volatile memory storing instructions that, when executed by the at least one processor, cause the device to at least: send a request to report a carrier phase measurement for a first detected arrival signal path for a reference signal; receive a report based on a line-of-sight indicator value for the first detected arrival signal path being no greater than at least one other line-of-sight indicator value for at least one other arrival signal path among a plurality of arrival signal paths for the reference signal, the report including at least one carrier phase measurement for at least one of the plurality of arrival signal paths; and estimate a position of a user equipment based on the at least one carrier phase measurement for at least one of the plurality of arrival signal paths.

[0007] According to one aspect, a device includes at least one processor and at least one non-volatile memory storing instructions that, when executed by the at least one processor, cause the device to at least: receive a request to report a carrier phase measurement of a first detected arrival signal path for a reference signal; detect multiple arrival signal paths including the first detected arrival signal path from the reference signal; determine a line-of-sight indicator value for the detected multiple arrival signal paths including the first detected arrival signal path; and send a report based on the determined line-of-sight indicator value for the first detected arrival signal path being no greater than at least one of the line-of-sight indicator values for other arrival signal paths, the report including one of the following: a carrier phase measurement of the first detected arrival signal path when the line-of-sight indicator value for the first detected arrival signal path is greater than a threshold; or a carrier phase measurement of one of the multiple arrival signal paths detected, where one of the arrival signal paths has a maximum line-of-sight indicator value among the determined line-of-sight indicator values for the multiple arrival signal paths; or an average carrier phase measurement of at least one of the multiple arrival signal paths. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The above-described aspects and other features are explained in the following description taken in conjunction with the accompanying drawings.

[0009] Figure 1 is a block diagram of one possible non-limiting system in which example embodiments may be practiced.

[0010] Figure 2 This is a flow chart of DL-based CP positioning.

[0011] Figure 3 This is a flow chart of UL-based CP positioning.

[0012] Figure 4 is an example apparatus configured to implement the examples described herein.

[0013] Figure 5 A representation of an example of a non-volatile storage medium for storing instructions implementing the examples described herein is shown.

[0014] Figure 6 is an example method based on the examples described herein.

[0015] Figure 7 is an example method based on the examples described herein.

[0016] Figure 8 is an example method based on the examples described herein. DETAILED DESCRIPTION

[0017] Steering Figure 1 , which shows a block diagram of one possible non-limiting example in which the examples may be practiced. A user equipment (UE) 110, a radio access network (RAN) node 170 and (multiple) network elements 190 are shown. Figure 1 In the example of FIG1 , user equipment (UE) 110 wirelessly communicates with wireless network 100. A UE is a wireless device that can access wireless network 100. UE 110 includes one or more processors 120, one or more memories 125, and one or more transceivers 130 interconnected via one or more buses 127. Each of the one or more transceivers 130 includes a receiver (Rx) 132 and a transmitter (Tx) 133. The one or more buses 127 can be address, data, or control buses and can include any interconnection mechanism, such as a series of wires on a motherboard or integrated circuit, optical fiber, or other optical communication device. The one or more transceivers 130 are connected to one or more antennas 128. The one or more memories 125 include computer program code 123. UE 110 includes module 140, which includes one or both of portions 140-1 and / or 140-2. The module can be implemented in a variety of ways. Module 140 can be implemented in hardware as module 140-1, such as as part of one or more processors 120. Module 140-1 may also be implemented as an integrated circuit or through other hardware implementations such as a programmable gate array. In another example, module 140 may be implemented as module 140-2, which is implemented as computer program code 123 and executed by one or more processors 120. For example, one or more memories 125 and computer program code 123 may be configured to, together with one or more processors 120, cause user equipment 110 to perform one or more of the operations described herein. UE 110 communicates with RAN node 170 via wireless link 111.

[0018] In this example, RAN node 170 is a base station that provides access to wireless network 100 for wireless devices such as UE 110. RAN node 170 may be, for example, a base station for 5G, also known as New Radio (NR). In 5G, RAN node 170 may be an NG-RAN node, which is defined as a gNB or ng-eNB. A gNB is a node that provides NR user plane and control plane protocol termination towards the UE and is connected to a 5GC (such as, for example, network element(s) 190) via an NG interface (such as connection 131). An ng-eNB is a node that provides E-UTRA user plane and control plane protocol termination towards the UE and is connected to the 5GC via an NG interface (such as connection 131). An NG-RAN node may include multiple gNBs, which may also include a Central Unit (CU) (gNB-CU) 196 and Distributed Unit(s) (gNB-DU), of which DU 195 is shown. Note that DU 195 may include, be coupled to, and control a Radio Unit (RU). The gNB-CU 196 is a logical node that hosts the radio resource control (RRC), SDAP, and PDCP protocols for a gNB, or the RRC and PDCP protocols for an en-gNB, controlling the operation of one or more gNB-DUs. The gNB-CU 196 terminates the F1 interface with the gNB-DU 195. The F1 interface is shown as reference numeral 198, although reference numeral 198 also illustrates links between remote and centralized elements of the RAN node 170, such as the link between the gNB-CU 196 and the gNB-DU 195. The gNB-DU 195 is a logical node that hosts the RLC, MAC, and PHY layers of a gNB or en-gNB, and its operation is controlled in part by the gNB-CU 196. One gNB-CU 196 supports one or more cells. A cell can be supported by one gNB-DU 195, or a cell can be supported / shared with multiple DUs under RAN sharing. The gNB-DU 195 terminates the F1 interface 198 to the gNB-CU 196. Note that the DU 195 is considered to include the transceiver 160, e.g., as part of the RU, but some examples may have the transceiver 160 as part of a separate RU, e.g., under the control of and connected to the DU 195. The RAN node 170 may also be an eNB (evolved NodeB) base station for LTE (Long Term Evolution), or any other suitable base station or node.

[0019] The RAN node 170 includes one or more processors 152, one or more memories 155, one or more network interfaces (N / WI / F) 161, and one or more transceivers 160, interconnected via one or more buses 157. Each of the one or more transceivers 160 includes a receiver Rx 162 and a transmitter Tx 163. The one or more transceivers 160 are connected to one or more antennas 158. The one or more memories 155 include computer program code 153. The CU 196 may include (multiple) processors 152, one or more memories 155, and a network interface 161. Note that the DU 195 may also include its own memory / memory and (multiple) processors, and / or other hardware, but these are not shown.

[0020] RAN node 170 includes module 150, which includes one or both of portions 150-1 and / or 150-2, which can be implemented in a variety of ways. Module 150 can be implemented in hardware as module 150-1, such as as part of one or more processors 152. Module 150-1 can also be implemented as an integrated circuit or through other hardware implementations, such as a programmable gate array. In another example, module 150 can be implemented as module 150-2, which is implemented as computer program code 153 and executed by one or more processors 152. For example, one or more memories 155 and computer program code 153 are configured to, together with one or more processors 152, cause RAN node 170 to perform one or more of the operations described herein. Note that the functionality of module 150 can be distributed, such as between DU 195 and CU 196, or implemented solely in DU 195.

[0021] One or more network interfaces 161 communicate over a network, such as via links 176 and 131. Two or more gNBs 170 may communicate using, for example, link 176. Link 176 may be wired or wireless or both, and may implement, for example, an Xn interface for 5G, an X2 interface for LTE, or other suitable interfaces for other standards.

[0022] The one or more buses 157 may be address, data, or control buses and may include any interconnection mechanism, such as a series of wires on a motherboard or integrated circuit, optical fiber or other optical communication equipment, a wireless channel, etc. For example, the one or more transceivers 160 may be implemented as a remote radio head (RRH) 195 for LTE or a distributed unit (DU) 195 for a gNB implementation for 5G, where other elements of the RAN node 170 may be physically located at a different location than the RRH / DU 195, and the one or more buses 157 may be implemented in part, for example, as fiber optic cables or other suitable network connections for connecting other elements of the RAN node 170 (e.g., a central unit (CU), gNB-CU 196) to the RRH / DU 195. Reference numeral 198 also indicates these suitable network link(s).

[0023] A RAN node / gNB may include one or more TRPs, to which the methods described herein may be applied. Figure 1 The RAN node 170 is shown to include TRP 51 and TRP 52 in addition to the TRP represented by transceiver 160. Similar to transceiver 160, TRP 51 and TRP 52 may each include a transmitter and a receiver. RAN node 170 may host or include Figure 1 Other TRPs not shown.

[0024] The relay nodes in NR are called integrated access and backhaul nodes. The mobile terminal part of the IAB node facilitates the backhaul (parent link) connection. In other words, the mobile terminal part includes the functionality of carrying UE functions. The distributed unit part of the IAB node facilitates the so-called access link (sub-link) connection (i.e., for access link UE, and in the case of multi-hop IAB, for backhaul of other IAB nodes). In other words, the distributed unit part is responsible for certain base station functions. The IAB scenario can follow a so-called split architecture, where the central unit hosts the higher layer protocols for the UE and terminates the control plane and user plane interfaces with the 5G core network.

[0025] Note that the description herein indicates that a "cell" performs a function, but it should be clear that the device that forms the cell can perform that function. A cell constitutes part of a base station. That is, each base station can have multiple cells. For example, a single carrier frequency and associated bandwidth can have three cells, each covering one-third of a 360-degree area, so that the coverage area of a single base station is approximately elliptical or circular. In addition, each cell can correspond to a single carrier, and a base station can use multiple carriers. So if each carrier has three 120-degree cells and there are two carriers, the base station has a total of six cells.

[0026] The wireless network 100 may include one or more network elements 190, which may include core network functions and provide connectivity to other networks such as a telephone network and / or a data communications network (e.g., the Internet) via one or more links 181. Such core network functions for 5G may include a location management function (LMF) and / or access and mobility management function(s) (AMFs) and / or a user plane function (UPF) and / or session management function(s) (SMFs). Such core network functions for LTE may include MME (Mobility Management Entity) / SGW (Serving Gateway) functions. Such core network functions may include SON (Self-Organizing / Optimizing Network) functions. These are merely example functions that may be supported by the network element(s) 190, and it is noted that both 5G and LTE functions may be supported. The RAN node 170 is coupled to the network element 190 via a link 131. Link 131 may be implemented, for example, as an NG interface for 5G, an S1 interface for LTE, or other suitable interfaces for other standards. Network element 190 includes one or more processors 175, one or more memories 171, and one or more network interfaces (N / WI / F) 180 interconnected by one or more buses 185. One or more memories 171 include computer program code 173. Computer program code 173 may include SON and / or MRO functionality 172.

[0027] Wireless network 100 can implement network virtualization, which is the process of combining hardware and software network resources and network functions into a single, software-based managed entity or virtual network. Network virtualization involves platform virtualization, which is often combined with resource virtualization. Network virtualization can be categorized as either external network virtualization, which combines multiple networks or network components into virtual units, or internal network virtualization, which provides network-like functionality to software containers on a single system. Note that the virtualized entities created by network virtualization are still implemented, to some extent, using hardware such as processors 152 or 175 and memories 155 and 171, and such virtualized entities also produce technical effects.

[0028] Computer-readable memories 125, 155, and 171 may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as semiconductor-based memory devices, flash memory, magnetic memory devices and systems, optical memory devices and systems, non-volatile memory, volatile memory, fixed memory, and removable memory. Computer-readable memories 125, 155, and 171 may be components for performing storage functions. Processors 120, 152, and 175 may be of any type suitable for the local technical environment and, as non-limiting examples, may include one or more of a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), and a processor based on a multi-core processor architecture. Processors 120, 152, and 175 may be components for performing functions such as controlling UE 110, RAN node 170, network element(s) 190, and other functions described herein.

[0029] In general, various exemplary embodiments of the user device 110 may include, but are not limited to, a cellular phone with wireless communication capabilities (such as a smartphone, tablet computer, personal digital assistant (PDA)), a portable computer with wireless communication capabilities, an image capture device with wireless communication capabilities (such as a digital camera), a gaming device with wireless communication capabilities, a music storage and playback device with wireless communication capabilities, an Internet device (including a device that allows wireless Internet access and browsing), a tablet computer with wireless communication capabilities, a head-mounted display (such as a display that implements virtual / augmented / mixed reality), and a portable unit or terminal that incorporates a combination of such functions. The UE 110 may also be a vehicle such as a car, or a UE installed in a vehicle, a UAV such as a drone, or a UE installed in a UAV. The user device 110 may be a terminal device such as a mobile phone, a mobile device, a sensor device, etc., which is a device used or not used by a user.

[0030] UE 110, RAN node 170 and / or network element(s) 190 (and associated memory, computer program code and modules) may be configured to implement (eg, in part) the methods described herein. Figure 1 The computer program code 123, module 140-1, module 140-2 and other elements / features of the illustrated UE 110 may implement the user equipment related aspects of the examples described herein. Figure 1 The computer program code 153, module 150-1, module 150-2, and other elements / features of the illustrated RAN node 170 may implement the example gNB / TRP-related aspects described herein. Figure 1The computer program code 173 and other elements / features of the illustrated network element(s) 190 may be configured to implement the example network element-related aspects described herein.

[0031] Therefore, having introduced a suitable but non-limiting technical context for the practice of the example embodiments, the example embodiments are now described in more detail.

[0032] A Rel-18 work item [RP-223549, “New Widgets for Extending and Improving NR Positioning”] has been agreed to further enhance NR positioning. One of the main topics is support for carrier phase (CP) positioning in addition to currently supported positioning technologies.

[0033] This work item includes the following work: specifying physical layer measurements and signaling to support NR DL and UL carrier phase positioning based on UE, UE-assisted, and NG-RAN node-assisted positioning; using the existing DL PRS and UL SRS used for positioning for NR carrier phase measurements; specifying measurements limited to a single carrier and / or DL PRS positioning frequency layer (PFL); specifying corresponding new core requirements; and identifying and specifying the impact on existing specifications, including RRM measurements (including PRS measurement periods / reporting) and procedures without measurement gaps in connected and inactive modes.

[0034] Next, brief background information about the measurement and process of the CP positioning method assuming UL (uplink) based carrier phase (CP). Basically, in the carrier phase positioning technique, the target UE transmits an uplink reference signal, and multiple TRPs (transmission reception points) measure phase measurements, which are used to estimate the position of the target UE. For the SRS resource transmitted from the kth UE, the phase measurement at the i-th TRP can be expressed as

[0035]

[0036] In equation (1), represents the phase measurement in cycles and does not reuse 2π,d ik ,c,δ k , δ i and N ik Correspondingly, denote the actual geographical distance between the kth UE and the i-th TRP, the speed of light, the internal clock bias of the kth UE, the internal clock bias of the i-th TRP, and the integer ambiguity of the propagation wavelength. Similar to (1), the same equation is derived for the j-th TRP, i.e. And the single differential measurement between two TRPs is shown in the following equation.

[0037]

[0038] In equation (2), Δd k =d ik -d jk , Δδ ij =δ i -δ j ,

[0039] Through this single-differentiation operation, the UE clock bias is eliminated, which is similar to the RTOA (Relative Time of Arrival) measurement of UL-TDOA. The clock error between TRPs still exists, but it is eliminated by double-differentiation using the measurement of the reference device.

[0040] Let us assume that the Kth UE is a Positioning Reference Unit (PRU). For the SRS sent from the PRU, the single difference measurement between the i-th TRP and the j-th TRP is

[0041]

[0042] In equation (3), ΔΔd kK =Δd k -Δd K , Finally, the clock error between TRPs is eliminated. We consider the clock offset at the UE and TRP, which is the main error in the single and double differential methods used to explain the carrier phase method.

[0043] The LoS (line-of-sight) / NLoS (non-line-of-sight) indicator was introduced in specification TS 37.355.

[0044] Described herein is a method for reporting carrier phase measurements of the first arrival path of a received reference signal. The following advances have been made.

[0045]

[0046] The current protocol only allows the UE to report RSCP (Reference Signal Carrier Phase) or RSCPD (Reference Signal Carrier Phase Difference) measurements for the first arrival path only. It should be noted that for additional paths, the traditional RSTD or UE Rx-Tx time difference measurement can also be reported. In addition, when the UE reports CP measurements, it should also include timing measurements. The LoS / NLoS indicator field is shared between timing measurements and CP measurements because the detection capability of the path is independent of the positioning technology.

[0047] Problem: The following example scenario is possible because the first path can be a peak from interference or noise. The UE can report timing measurements for the first detected path with a LoS indicator value of 0.4. The UE can report timing measurements for the second detected path with a LoS indicator value of 0.6.

[0048] According to the current protocol, the UE cannot report the CP measurement for the second detection path, even though the first detection path may not be the actual first path because the LoS indicator value is not greater than the second detection path. According to the current specification, there is ambiguity in UE behavior. The examples described in this article address this issue.

[0049] UE behavior is described herein to resolve ambiguous UE behavior regarding RSCP or RSCPD measurement reports.

[0050] The first arrival path is the first detected path from the device, but the UE cannot guarantee whether it is the real / actual first arrival path because it may be a noise / interference signal. In addition, if there is strong obstruction between the UE and the TRP, the signal strength of the first path may be very weak. For example, the UE may detect three arrival paths at times t1, t2, and t3, such as path 1 (t1), path 2 (t2), and path 3 (t3), where t1 is less than t2 and t2 is less than t3, then the detected first path is path 1 (t1). However, for example, if the LoS / NLoS factor is 0.1 for path 1, 0.1 for path 2, and 0.8 for path 3, then path 3 (t3) is likely to be the actual first arrival path. Therefore, the "detected arrival path" and the "actual / true arrival path" are not the same.

[0051] DL-based CP positioning

[0052] The LMF provides assistance data including PRS configuration information to the UE.

[0053] For DL (downlink) based CP positioning, the LMF initiates the CP technique and requests the UE to report CP measurements for a specific TRP.

[0054] The UE detects multiple arrival signal paths from a specific PRS transmitted from the TRP. For a specific DL PRS resource, the UE detects a high LoS indication value other than the first detection path. For example, the UE determines that the LoS indication value of the second detection path is greater than the LoS indication value of the first detection path.

[0055] Option 1) The UE reports the RSCP or RSCPD measurement of the first detected path even if the LoS probability is lower than that of the additional path such as the second detected path, but it also informs the LMF that the first path LoS indicator is not greater than that of the additional path.

[0056] To better understand Option 1, the following example is provided: Report Content #1: (LoS indicator = 0.4, RSTD measurement, RSCPD measurement) Report Content #2: (LoS indicator = 0.6, RSTD measurement) Furthermore, the UE reports that the report measurement associated with the LoS indicator of 0.4 corresponds to the "first path."

[0057] Option 2) The UE reports or is instructed by the LMF to report the RSCP or RSCPD measurement of the signal path showing the maximum LoS indicator value. In this option, even if the UE does not report the LoS indicator (because it is an optional parameter), the LMF will assume that the set of report contents containing RSCP or RSCPD is associated with the maximum LoS path.

[0058] Option 2-1) The UE may additionally provide which signal path (Nth detection path) is selected to obtain CP measurement.

[0059] Option 2-2) The UE does not provide any additional information. Even if the CP measurement is not performed from the first detection path, the LMF will consider the CP measurement reported for the first detection path.

[0060] For example, for option 2-2, when the report does not include the arrival signal path with the maximum line-of-sight indicator value, and the report includes the carrier phase measurement of the arrival signal path with the maximum line-of-sight indicator value, in response to the report with the carrier phase difference measurement not including the arrival signal path with the maximum line-of-sight indicator value, and the report includes the carrier phase measurement of the arrival signal path with the maximum line-of-sight indicator value, the LMF can determine that the carrier phase measurement of the arrival signal path with the maximum line-of-sight indicator value is for the arrival signal path having a line-of-sight indicator value of at least one line-of-sight indicator that is not greater than that of another arrival signal path.

[0061] Option 3) The UE reports the average of the RSCP or RSCPD measurements of the first N detection paths (number N). In this case, the UE confirms that any one of the first N detection paths can be the actual first path. For the necessity of this option, we can consider the following cases. The LoS indicator value is the maximum value at the Nth detection path. The LoS indicator value is almost the same as that of the N detection paths. For example, the LoS indicator value of the first detection path and the second detection path can be 0.5

[0062] The above options apply to specific DL PRS resources. The LMF can instruct the UE to perform measurements on a specific DL PRS resource set including multiple DL PRS resources. In this case, for CP measurement reporting, the UE prioritizes the DL PRS resource that shows the maximum LoS indicator value at the first detection path among all detection paths in the DL PRS resource. In one embodiment, the UE prioritizes a specific DL PRS resource in the DL PRS resource set so that the line-of-sight indicator value of the first detection path obtained from the DL PRS resource is the maximum value among the line-of-sight indicators of the first detection paths from other DL PRS resources in the DL PRS resource set.

[0063] The LMF estimates the UE position based on the provided measurements.

[0064] Similar to DL CP positioning, gNB behavior for UL CP positioning is also proposed.

[0065] UL-based CP positioning

[0066] The gNB provides assistance data including SRS configuration information to the UE.

[0067] For UL (uplink) based CP positioning, the UE sends SRS so that multiple TRPs measure signals in different paths.

[0068] When each TRP detects an incoming signal from a UE, multiple signals from different paths can be measured. Therefore, the TRP can detect a high LoS indication value for a specific arrival path(s) other than the first detected path for a received signal from a specific SRS resource. For example, the LoS indication value for the second detected path is greater than the first detected path. The following options can then be used when the gNB sends a report on the measurements and their LoS indication values to the LMF.

[0069] Option 1) The gNB reports the UL RSCP measurement of the first detected path, even if the LoS probability is lower than the LoS probability of additional paths such as the second detected path, but it informs the LMF that the first path LoS indicator is not greater than the LoS indicator of the additional path.

[0070] Similar to the DL case, the following example is provided. Report Content #1: (LoS indicator = 0.4, RTOA measurement, RSCP measurement). Report Content #2: (LoS indicator = 0.6, RTOA measurement). In addition, the gNB reports that the reported measurement associated with the LoS indicator of 0.4 corresponds to the "first path."

[0071] Option 2) The gNB reports, or the LMF requests reporting of, the RSCP or RTOA measurement for the signal path showing the maximum LoS indicator value. In this option, even if the gNB does not report the LoS indicator, the LMF assumes that the set of reported contents including the RSCP is associated with the maximum LoS path.

[0072] Option 2-1) The gNB may additionally provide which signal path (nth detection path, where n>=2) is selected for CP measurement.

[0073] Option 2-2) The gNB does not provide any additional information. The LMF shall consider the CP measurement reported for the first path, even if the CP measurement is not taken from the first "detection" path.

[0074] For example, for option 2-2, when the report does not include the arrival signal path with the maximum line-of-sight indicator value, and the report includes the carrier phase measurement of the arrival signal path with the maximum line-of-sight indicator value, in response to the report with the carrier phase difference measurement not including the arrival signal path with the maximum line-of-sight indicator value, and the report includes the carrier phase measurement of the arrival signal path with the maximum line-of-sight indicator value, the LMF can determine that the carrier phase measurement of the arrival signal path with the maximum line-of-sight indicator value is for the arrival signal path having a line-of-sight indicator value of at least one line-of-sight indicator that is not greater than that of another arrival signal path.

[0075] Option 3) The gNB reports the average of the RSCP measurements of the first N detected paths (number N).

[0076] The above options apply to specific UL SRS resources. The LMF may request the gNB to perform measurements on a specific UL PRS resource set (SL PRS resource) (prior art). The gNB may prioritize the specific UL SRS resource(s) that exhibit the highest LoS indicator value on the first detection path among all detection paths.

[0077] The LMF estimates the UE position based on the provided measurements.

[0078] Figure 2 and Figure 3 Additional details and flow charts of the proposed methods for both DL-based CP techniques and UL-based CP techniques are provided in .

[0079] Figure 2FIG2 is a flow chart of DL-based CP positioning based on the examples described herein. At 202, LMF 190 provides assistance data to UE 110, where the assistance data may include PRS configuration information. At 204, the LMF initiates a CP technique. At 206, LMF 190 requests CP measurements for a specific TRP from UE 110. At 208, the UE detects multiple arriving signal paths from at least one DL PRS.

[0080] At 210 (option 1), UE 110 reports the CP measurement in the first detection path to LMF 190. At 212 (option 2), UE 110 reports the CP measurement in the signal path with the maximum LoS indication value to LMF 190. At 214 (option 2-1), UE 110 provides information about the selected arrival signal path to LMF 190. At 216 (option 2-2), performed by LMF 190, if no information about the signal path is provided, it is assumed that the reported CP measurement is from the first detection path.

[0081] At 218 (option 3), UE 110 reports the average CP measurement of the first N detected paths to LMF 190. At 220 (alternatively), UE 110 measures the DL PRS resource with the largest LoS indicator as the first detected path.

[0082] Figure 3 FIG3 is a flow chart of UL-based CP positioning based on the examples described herein. At 302, gNB 170 sends assistance data, such as SRS configuration information, to UE 110. At 304, LMF 190 initiates CP technology. At 306, LMF 190 requests CP measurement from gNB 170. At 308, UE 110 sends SRS to gNB 170. At 310, gNB 170 measures arriving SRS signals along multiple paths.

[0083] At 312 (Option 1), gNB 170 reports the CP measurement in the first detected path to LMF 190. At 314 (Option 2), gNB 170 reports the CP measurement in the signal path with the largest LoS indication value to LMF 190. At 316 (Option 2-1), gNB 170 provides information about the selected arrival signal path to LMF 190. At 318 (Option 2-2), performed with LMF 190, if no information about the signal path is provided, it is assumed that the reported CP measurement is from the first detected path.

[0084] At 320, gNB 170 reports the average CP measurement of the first N detected paths to LMF 190. At 322 (alternatively), gNB 170 measures the UL SRS resource with the largest LoS indicator as the first detected path.

[0085] In some examples, when a first line-of-sight indicator value for a first arriving signal path of a reference signal has the same value as a second line-of-sight indicator value for a second arriving signal path of the reference signal, both the first line-of-sight indicator and the second line-of-sight indicator are considered to be maximum line-of-sight indicator values.

[0086] For options 1, 2, and 3, for both DL-based CP positioning and UL-based CP positioning, the reported carrier phase measurement may be a reference signal carrier phase difference (RSCPD) measurement. For example, the carrier phase measurement of an arrival signal path having a determined line-of-sight indicator value that is not greater than at least one of the line-of-sight indicator values of other detected arrival signal paths may be a reference signal carrier phase difference (RSCPD) measurement. The carrier phase measurement for an arrival signal path having the maximum line-of-sight indicator value among the determined line-of-sight indicator values for the detected arrival signal paths may be a reference signal carrier phase difference (RSCPD) measurement. The average carrier phase measurement of at least one of the detected arrival signal paths may be a reference signal carrier phase difference (RSCPD) measurement.

[0087] Advantages and technical effects of the examples described herein include accuracy enhancement, and the examples described herein resolve UE ambiguous behavior of carrier phase measurement reporting.

[0088] Figure 4 4 is an example apparatus 400 configured to implement the examples described herein (which may be implemented in hardware). Apparatus 400 includes at least one processor 402 (e.g., an FPGA and / or a CPU), one or more memories 404 including computer program code 405 having instructions for performing the methods described herein, wherein at least one memory 404 and computer program code 405 are configured to, together with at least one processor 402, cause apparatus 400 to implement circuit systems, processes, components, modules, or functions (implemented with control module 406) to implement the examples described herein. Memory 404 may be non-transitory memory, transient memory, volatile memory (e.g., RAM), or non-volatile memory (e.g., ROM).

[0089] The CP measurement report 430 may implement examples described herein related to methods and reports of carrier phase measurement reporting.

[0090] The device 400 includes a display and / or I / O interface 408, which includes user interface (UI) circuitry and elements that can be used to display aspects or states of the methods described herein (e.g., while one of the methods is being performed or at a subsequent time), or to receive input from a user, such as using a keypad, camera, touch screen, touch area, microphone, biometrics, one or more sensors, etc. The device 400 includes one or more communications, such as network (N / W) interface(s) (I / F) 410. The communication I / F(s) 410 can be wired and / or wireless and communicate over the Internet / other network(s) via any communication technology, including via one or more links 424. The link(s) 424 can be from Figure 1 Link(s) 131 and / or 176. Figure 1 The link(s) 131 and / or 176 may also be implemented using transceiver(s) 416 and corresponding wireless link(s) 426. The communication I / F(s) 410 may include one or more transmitters or one or more receivers.

[0091] The transceiver 416 includes one or more transmitters 418 and one or more receivers 420. The transceiver 416 and / or the communication I / F(s) 410 may include standard, well-known components, such as amplifiers, filters, frequency converters, (de)modulators and encoder / decoder circuitry, and one or more antennas, such as antenna 414 for communicating over a wireless link 426.

[0092] The control module 406 of the device 400 includes one or both of components 406-1 and / or 406-2, which can be implemented in a variety of ways. The control module 406 can be implemented in hardware as the control module 406-1, such as being implemented as part of one or more processors 402. The control module 406-1 can also be implemented as an integrated circuit or by other hardware such as a programmable gate array. In another example, the control module 406 can be implemented as a control module 406-2, which is implemented as computer program code (with corresponding instructions) 405 and executed by one or more processors 402. For example, the one or more memories 404 store instructions that, when executed by the one or more processors 402, cause the device 400 to perform one or more of the operations described herein. In addition, the one or more processors 402, the one or more memories 404, and the example algorithms (e.g., as flow charts and / or signaling diagrams) (encoded as instructions, programs, or code) are components for performing the operations described herein.

[0093] The apparatus 400 for implementing the functionality of the control module 406 may be a UE 110, a RAN node 170 (e.g., a gNB), or a network element(s) 190 (e.g., a LMF 190). Thus, processor 402 may correspond to processor(s) 120, processor(s) 152, and / or processor(s) 175, memory 404 may correspond to memory(s) 125, memory(s) 155, and / or memory(s) 171, computer program code 405 may correspond to computer program code 123, computer program code 153, and / or computer program code 173, control module 406 may correspond to module 140-1, module 140-2, module 150-1, and / or module 150-2, and communication I / F(s) 410 and / or transceiver 416 may correspond to transceiver 130, antenna(s) 128, transceiver 160, antenna(s) 158, N / WI / F(s) 161, and / or N / WI / F(s) 180. Alternatively, apparatus 400 and its elements may not correspond to any of UE 110, RAN node 170, or network element(s) 190 and their respective elements, as apparatus 400 may be part of a Self-Organizing / Optimizing Network (SON) node or other node, such as a node in a cloud.

[0094] The apparatus 400 may also be distributed throughout the network (eg, 100 ), including within and between the apparatus 400 and any network elements, such as a network control element (NCE) 190 and / or RAN node 170 and / or UE 110 .

[0095] Interface 412 enables data communication and signaling between various items of apparatus 400, such as Figure 4 As shown. For example, interface 412 can be one or more buses, such as an address, data, or control bus, and can include any interconnection mechanism, such as a series of lines on a motherboard or integrated circuit, optical fiber or other optical communication equipment, etc. The computer program code (e.g., instructions) 405 including control module 406 can include object-oriented software configured to pass data or messages between objects within computer program code 405, or the computer program code (e.g., instructions) 405 including control module 406 can include functions, scripts, or procedural code. Apparatus 400 need not include each of the features mentioned, or may include other features as well. The various components of apparatus 400 can be at least partially located in a common housing 428, or a subset of the various components of apparatus 400 can be at least partially located in different housings, which can include housing 428.

[0096] Figure 5A schematic diagram of non-volatile memory media 500a (e.g., a computer / compact disc (CD) or digital versatile disc (DVD)), 500b (e.g., a universal serial bus (USB) memory stick), and 500c (e.g., cloud storage for downloading instructions and / or parameters 502 or receiving email instructions and / or parameters 502) storing instructions and / or parameters 502 that, when executed by a processor, enable the processor to perform one or more of the steps of the methods described herein. Instructions and / or parameters 502 may represent non-transitory computer-readable media.

[0097] Figure 6 An example method 600 based on examples described herein is provided. At 610, the method includes receiving a request to report a carrier phase measurement of a first detected arrival signal path for a reference signal. At 620, the method includes detecting a plurality of arrival signal paths including the first detected arrival signal path from the reference signal. At 630, the method includes determining a line-of-sight indicator value for the detected plurality of arrival signal paths including the first detected arrival signal path. At 640, the method includes sending a report including at least one carrier phase measurement for at least one arrival signal path of the plurality of arrival signal paths based on the determined line-of-sight indicator value for the first detected arrival signal path being no greater than at least one other line-of-sight indicator value for at least one other detected arrival signal path of the plurality of arrival signal paths. Method 600 may be performed by UE 110, RAN node 170 (e.g., gNB 170), or apparatus 400.

[0098] Figure 7 7. Example method 700 based on examples described herein. At 710, the method includes sending a request to report a carrier phase measurement for a first detected arrival signal path for a reference signal. At 720, the method includes receiving a report, based on a line-of-sight indicator value for the first detected arrival signal path being not greater than at least one other line-of-sight indicator value for at least one other arrival signal path in a plurality of arrival signal paths for the reference signal, the report including at least one carrier phase measurement for at least one arrival signal path in the plurality of arrival signal paths. At 730, the method includes estimating a position of a user equipment based on the at least one carrier phase measurement for at least one arrival signal path in the plurality of arrival signal paths. Method 700 may be performed by one or more network elements 190 (e.g., LMF 190) or apparatus 400.

[0099] Figure 8The present invention relates to an example method 800 based on examples described herein. At 810, the method includes receiving a request to report a carrier phase measurement of a first detected arrival signal path for a reference signal. At 820, the method includes detecting a plurality of arrival signal paths including the first detected arrival signal path from the reference signal. At 830, the method includes determining a line-of-sight indicator value for the detected plurality of arrival signal paths including the first detected arrival signal path. At 840, the method includes sending a report based on the determined line-of-sight indicator value for the first detected arrival signal path being not greater than at least one of the line-of-sight indicator values for the other arrival signal paths, the report including one of the following: a carrier phase measurement for the first detected arrival signal path when the line-of-sight indicator value for the first detected arrival signal path is greater than a threshold; or a carrier phase measurement for one of the plurality of detected arrival signal paths, where the one arrival signal path has a maximum line-of-sight indicator value among the determined line-of-sight indicator values for the plurality of arrival signal paths; or an average carrier phase measurement for at least one of the plurality of arrival signal paths. Method 800 may be performed by UE 110, RAN node 170 (e.g., gNB 170), or apparatus 400.

[0100] The following examples are provided and described herein.

[0101] Example 1. An apparatus comprising:

[0102] at least one processor and at least one non-transitory memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least:

[0103] receiving a request to report a carrier phase measurement of a first detected arrival signal path of a reference signal;

[0104] detecting a plurality of arriving signal paths including the first detected arriving signal path from the reference signal;

[0105] determining line-of-sight indicator values for the detected plurality of arrival signal paths including the first detected arrival signal path; and

[0106] Sending a report including at least one carrier phase measurement for at least one of the plurality of arrival signal paths based on the determined line-of-sight indicator value for the first detected arrival signal path being not greater than at least one other line-of-sight indicator value for at least one other detected arrival signal path of the plurality of arrival signal paths.

[0107] Example 2. The apparatus of example 1, wherein the instructions, when executed by the at least one processor, cause the apparatus to at least:

[0108] An indication is sent to a network entity, the indication indicating that the line-of-sight indicator value for the first detected arrival signal path is not greater than the at least one other line-of-sight indicator value for the at least one other detected arrival signal path of the plurality of arrival signal paths.

[0109] Example 3. The apparatus of any of Examples 1 to 2, wherein the instructions, when executed by the at least one processor, cause the apparatus to at least:

[0110] determining that the line-of-sight indicator value for the first detected arrival signal path is greater than a threshold;

[0111] determining a carrier phase measurement for the first detected arrival signal path; and

[0112] In response to determining that the line-of-sight indicator value for the first detected arrival signal path is greater than the threshold, determining to include the carrier phase measurement for the first detected arrival signal path in the report.

[0113] Example 4. The apparatus of any of Examples 1 to 3, wherein the instructions, when executed by the at least one processor, cause the apparatus to at least:

[0114] determining a carrier phase measurement for one of the detected plurality of arriving signal paths, wherein the one arriving signal path has a maximum line-of-sight indicator value among the determined line-of-sight indicator values for the plurality of arriving signal paths; and

[0115] It is determined to include in the report the carrier phase measurement for the one arriving signal path having the maximum line-of-sight indicator value among the determined line-of-sight indicator values for the plurality of arriving signal paths.

[0116] Example 5. The apparatus of Example 4, wherein the instructions, when executed by the at least one processor, cause the apparatus to at least:

[0117] A determination is made to include in the report an indication of the one arriving signal path having the maximum line-of-sight indicator value.

[0118] Example 6. The apparatus of any of Examples 1 to 5, wherein the instructions, when executed by the at least one processor, cause the apparatus to at least:

[0119] determining an average carrier phase measurement for one or more of the plurality of arriving signal paths; and

[0120] Determining to include in the report the average carrier phase measurement for the one or more of the plurality of arriving signal paths.

[0121] Example 7. The apparatus of Example 6, wherein the instructions, when executed by the at least one processor, cause the apparatus to at least:

[0122] determining a set of the plurality of arrival signal paths, wherein the line-of-sight indicator values for the arrival signal paths in the set are the same or a difference between the line-of-sight indicator values for the arrival signal paths in the set is less than a threshold;

[0123] Wherein determining the average carrier phase measurement for the one or more arriving signal paths in the plurality of arriving signal paths includes determining an average carrier phase measurement for the arriving signal paths in the set of the plurality of arriving signal paths.

[0124] Example 8. The apparatus of any of Examples 6 to 7, wherein the instructions, when executed by the at least one processor, cause the apparatus to at least:

[0125] determining an arriving signal path having a maximum line-of-sight indicator value among the determined line-of-sight indicator values for the plurality of arriving signal paths; and

[0126] Wherein determining the average carrier phase measurement for the one or more arrival signal paths among the plurality of arrival signal paths comprises determining an average carrier phase measurement for the one arrival signal path having a maximum line-of-sight indicator value among the determined line-of-sight indicator values for the plurality of arrival signal paths.

[0127] Example 9. An apparatus according to any one of Examples 1 to 8, wherein the at least one carrier phase measurement for the at least one arrival signal path of the plurality of arrival signal paths includes: a reference signal carrier phase measurement.

[0128] Example 10. An apparatus according to any one of Examples 1 to 9, wherein the instruction, when executed by the at least one processor, causes the apparatus to at least: for carrier phase measurement reporting, give priority to a downlink positioning reference signal resource associated with a maximum line-of-sight indicator value among the determined line-of-sight indicator values for the multiple arrival signal paths.

[0129] Example 11. The apparatus of any of Examples 1 to 10, wherein the instructions, when executed by the at least one processor, cause the apparatus to at least:

[0130] For carrier phase measurement reporting, priority is given to an uplink sounding reference signal resource associated with a maximum line-of-sight indicator value among the determined line-of-sight indicator values for the plurality of arriving signal paths.

[0131] Example 12. An apparatus according to any one of Examples 1 to 11, wherein: the first detected arrival signal path of the plurality of arrival signal paths is detected by the apparatus at a first time, and the other arrival signal paths of the plurality of arrival signal paths other than the first detected arrival signal path are detected by the apparatus at a time later than the first time; and the line-of-sight indicator value for the first detected arrival signal path is not greater than at least one of the line-of-sight indicator values for the other arrival signal paths. The first detected arrival signal path may be associated with a first noise signal, a first interference signal, or a first received signal power, and another arrival signal path of the plurality of arrival signal paths other than the first detected arrival signal path may not include a noise signal or an interference signal, or may be associated with a second noise signal weaker than the first noise signal, a second interference signal weaker than the first interference signal, or a second received signal power greater than the first received signal power, wherein the another arrival signal path is detected by the apparatus at another time later than the first time.

[0132] Example 13. An apparatus according to any one of Examples 1 to 12, wherein: the reference signal includes a positioning reference signal; and the apparatus includes a user equipment, or the user equipment includes the apparatus.

[0133] Example 14. The apparatus of any one of Examples 1 to 13, wherein:

[0134] The reference signal comprises a sounding reference signal; and

[0135] The device includes a transmission reception point, or the transmission reception point includes the device.

[0136] Example 15. The apparatus of any one of Examples 1 to 14, wherein:

[0137] The request to report the carrier phase measurement of the reference signal for the first detected arrival signal path is received from a network entity; and the report including the at least one carrier phase measurement for the at least one arrival signal path is sent to the network entity; wherein the network entity includes a location management function.

[0138] Example 16. An apparatus comprising:

[0139] at least one processor and at least one non-transitory memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least:

[0140] sending a request to report a carrier phase measurement of a first detected arrival signal path of a reference signal;

[0141] receiving a report based on the line-of-sight indicator value for the first detected arrival signal path being not greater than at least one other line-of-sight indicator value for at least one other arrival signal path of a plurality of arrival signal paths for the reference signal, the report including at least one carrier phase measurement for at least one arrival signal path of the plurality of arrival signal paths; and

[0142] A position of a user equipment is estimated based on the at least one carrier phase measurement for the at least one arriving signal path of the plurality of arriving signal paths.

[0143] Example 17. An apparatus according to Example 16, wherein the instructions, when executed by the at least one processor, cause the apparatus to receive at least an indication from the user equipment or the transmission reception point, the indication indicating that the line-of-sight indicator value for the first detected arrival signal path is not greater than the at least one other line-of-sight indicator value for the at least one other arrival signal path in the multiple arrival signal paths.

[0144] Example 18. An apparatus according to any one of Examples 16 to 17, wherein when the line-of-sight indicator value for the first detected arrival signal path is greater than a threshold, the at least one carrier phase measurement received in the report includes a carrier phase measurement for the first detected arrival signal path.

[0145] Example 19. An apparatus according to any one of Examples 16 to 18, wherein the at least one carrier phase measurement received in the report includes a carrier phase measurement for an arrival signal path having a maximum line-of-sight indicator value among the line-of-sight indicator values for the multiple arrival signal paths.

[0146] Example 20. The apparatus of Example 19, wherein the report comprises an indication of the one arriving signal path having the maximum line-of-sight indicator value.

[0147] Example 21. An apparatus according to any of Examples 16 to 20, wherein the report includes an average carrier phase measurement for one or more of the plurality of arriving signal paths.

[0148] Example 22. The apparatus of Example 21, wherein: the average carrier phase measurement for the one or more arrival signal paths in the report comprises an average carrier phase measurement for arrival signal paths in a set of the plurality of arrival signal paths; and the line-of-sight indicator values for the arrival signal paths in the set are the same, or a difference between the line-of-sight indicator values for the arrival signal paths in the set is less than a threshold. The threshold may be configured by the LMF or predefined as a fixed value.

[0149] Example 23. An apparatus according to any one of Examples 21 to 22, wherein the average carrier phase measurement for the one or more arrival signal paths of the multiple arrival signal paths in the report includes an average carrier phase measurement for an arrival signal path having a maximum line-of-sight indicator value among the line-of-sight indicator values for the multiple arrival signal paths.

[0150] Example 24. An apparatus according to any one of Examples 16 to 23, wherein the at least one carrier phase measurement for the at least one arrival signal path of the plurality of arrival signal paths comprises a reference signal carrier phase measurement.

[0151] Example 25. An apparatus according to any one of Examples 16 to 24, wherein the instruction, when executed by the at least one processor, causes the apparatus to at least: send an indication to the user equipment, the indication being used to prioritize, for carrier phase measurement reporting, a downlink positioning reference signal resource associated with a maximum line-of-sight indicator value among the line-of-sight indicator values for the multiple arrival signal paths.

[0152] Example 26. An apparatus according to any one of Examples 16 to 25, wherein the instruction, when executed by the at least one processor, causes the apparatus to at least: send an indication to a transmission receiving point, the indication being used to prioritize, for carrier phase measurement reporting, an uplink sounding reference signal resource associated with a maximum line-of-sight indicator value among the line-of-sight indicator values for the multiple arrival signal paths.

[0153] Example 27. The apparatus of any of Examples 16 to 26, wherein: the first detected arrival signal path of the plurality of arrival signal paths is associated with a first time, and the other arrival signal paths of the plurality of arrival signal paths other than the first detected arrival signal path are associated with times later than the first time; and the line-of-sight indicator value for the first detected arrival signal path is not greater than at least one of the line-of-sight indicator values for the other arrival signal paths. The first detected arrival signal path may be associated with a first noise signal, a first interference signal, or a first received signal power, and another arrival signal path of the plurality of arrival signal paths other than the first detected arrival signal path may not include a noise signal or an interference signal, or may be associated with a second noise signal weaker than the first noise signal, a second interference signal weaker than the first interference signal, or a second received signal power greater than the first received signal power, wherein the another arrival signal path is detected at another time later than the first time.

[0154] Example 28. An apparatus according to any one of Examples 16 to 27, wherein: the reference signal includes a positioning reference signal; the request for reporting the carrier phase measurement of the first detected arrival signal path for the reference signal is sent to the user equipment; and the report including the at least one carrier phase measurement for the at least one arrival signal path is received from the user equipment.

[0155] Example 29. An apparatus according to any one of Examples 16 to 28, wherein: the reference signal includes a sounding reference signal; the request for reporting the carrier phase measurement of the first detected arrival signal path for the reference signal is sent to a transmission receiving point; and the report including the at least one carrier phase measurement for the at least one arrival signal path is received from the transmission receiving point.

[0156] Example 30. An apparatus according to any one of Examples 16 to 29, wherein the apparatus includes location management functionality.

[0157] Example 31. An apparatus comprising:

[0158] at least one processor and at least one non-transitory memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least:

[0159] receiving a request to report a carrier phase measurement of a first detected arrival signal path of a reference signal;

[0160] detecting a plurality of arriving signal paths including the first detected arriving signal path from the reference signal;

[0161] determining line-of-sight indicator values for the detected plurality of arrival signal paths including the first detected arrival signal path; and

[0162] A report is sent based on the fact that the line-of-sight indicator value determined for the first detected arrival signal path is not greater than at least one of the line-of-sight indicator values for the other arrival signal paths, the report including one of the following: a carrier phase measurement for the first detected arrival signal path when the line-of-sight indicator value for the first detected arrival signal path is greater than a threshold; or a carrier phase measurement for one of the multiple arrival signal paths detected, wherein the one arrival signal path has a maximum line-of-sight indicator value among the determined line-of-sight indicator values for the multiple arrival signal paths; or an average carrier phase measurement for at least one of the multiple arrival signal paths.

[0163] Example 32. A method comprising:

[0164] receiving a request to report a carrier phase measurement of a first detected arrival signal path of a reference signal;

[0165] detecting a plurality of arriving signal paths including the first detected arriving signal path from the reference signal;

[0166] determining line-of-sight indicator values for the detected plurality of arrival signal paths including the first detected arrival signal path; and

[0167] Sending a report including at least one carrier phase measurement for at least one of the plurality of arrival signal paths based on the determined line-of-sight indicator value for the first detected arrival signal path being not greater than at least one other line-of-sight indicator value for at least one other detected arrival signal path of the plurality of arrival signal paths.

[0168] Example 33. A method comprising:

[0169] sending a request to report a carrier phase measurement of a first detected arrival signal path of a reference signal;

[0170] receiving a report based on the line-of-sight indicator value for the first detected arrival signal path being not greater than at least one other line-of-sight indicator value for at least one other arrival signal path of a plurality of arrival signal paths for the reference signal, the report including at least one carrier phase measurement for at least one arrival signal path of the plurality of arrival signal paths; and

[0171] A position of a user equipment is estimated based on the at least one carrier phase measurement for the at least one arriving signal path of the plurality of arriving signal paths.

[0172] Example 34. A method comprising:

[0173] receiving a request to report a carrier phase measurement of a first detected arrival signal path of a reference signal;

[0174] detecting a plurality of arriving signal paths including the first detected arriving signal path from the reference signal;

[0175] determining line-of-sight indicator values for the detected plurality of arrival signal paths including the first detected arrival signal path; and

[0176] A report is sent based on the fact that the line-of-sight indicator value determined for the first detected arrival signal path is not greater than at least one of the line-of-sight indicator values for the other arrival signal paths, the report including one of the following: a carrier phase measurement for the first detected arrival signal path when the line-of-sight indicator value for the first detected arrival signal path is greater than a threshold; or a carrier phase measurement for one of the multiple arrival signal paths detected, wherein the one arrival signal path has a maximum line-of-sight indicator value among the determined line-of-sight indicator values for the multiple arrival signal paths; or an average carrier phase measurement for at least one of the multiple arrival signal paths.

[0177] Example 35. An apparatus comprising:

[0178] means for receiving a request to report a carrier phase measurement for a first detected arrival signal path of a reference signal;

[0179] means for detecting a plurality of arriving signal paths including said first detected arriving signal path from said reference signal;

[0180] means for determining a line-of-sight indicator value for the detected plurality of arrival signal paths including the first detected arrival signal path; and

[0181] means for sending a report comprising at least one carrier phase measurement for at least one of the plurality of arrival signal paths based on the determined line-of-sight indicator value for the first detected arrival signal path being not greater than at least one other line-of-sight indicator value for at least one other detected arrival signal path of the plurality of arrival signal paths.

[0182] Example 36. An apparatus comprising:

[0183] means for sending a request to report a carrier phase measurement of a first detected arrival signal path of a reference signal;

[0184] means for receiving a report based on the line-of-sight indicator value for the first detected arriving signal path being not greater than at least one other line-of-sight indicator value for at least one other arriving signal path of a plurality of arriving signal paths for the reference signal, the report comprising at least one carrier phase measurement for at least one arriving signal path of the plurality of arriving signal paths;

[0185] Means for estimating a position of a user equipment based on the at least one carrier phase measurement for the at least one of the plurality of arriving signal paths.

[0186] Example 37. An apparatus comprising:

[0187] means for receiving a request to report a carrier phase measurement for a first detected arrival signal path of a reference signal;

[0188] means for detecting a plurality of arriving signal paths including said first detected arriving signal path from said reference signal;

[0189] means for determining a line-of-sight indicator value for the detected plurality of arrival signal paths including the first detected arrival signal path; and

[0190] A component for sending a report based on the determined line-of-sight indicator value of the first detected arrival signal path being not greater than at least one of the line-of-sight indicator values of the other arrival signal paths, the report comprising one of the following: a carrier phase measurement for the first detected arrival signal path when the line-of-sight indicator value for the first detected arrival signal path is greater than a threshold; or a carrier phase measurement for one of the detected multiple arrival signal paths, wherein the one arrival signal path has a maximum line-of-sight indicator value among the determined line-of-sight indicator values for the multiple arrival signal paths; or an average carrier phase measurement for at least one of the multiple arrival signal paths.

[0191] Example 38. A computer-readable medium comprising instructions stored thereon for performing at least the following:

[0192] receiving a request to report a carrier phase measurement of a first detected arrival signal path of a reference signal;

[0193] detecting a plurality of arriving signal paths including the first detected arriving signal path from the reference signal;

[0194] determining line-of-sight indicator values for the detected plurality of arrival signal paths including the first detected arrival signal path; and

[0195] Sending a report including at least one carrier phase measurement for at least one of the plurality of arrival signal paths based on the determined line-of-sight indicator value for the first detected arrival signal path being not greater than at least one other line-of-sight indicator value for at least one other detected arrival signal path of the plurality of arrival signal paths.

[0196] Example 39. A computer-readable medium comprising instructions stored thereon for performing at least the following:

[0197] sending a request to report a carrier phase measurement of a first detected arrival signal path of a reference signal;

[0198] receiving a report based on the line-of-sight indicator value for the first detected arrival signal path being not greater than at least one other line-of-sight indicator value for at least one other arrival signal path of a plurality of arrival signal paths for the reference signal, the report including at least one carrier phase measurement for at least one arrival signal path of the plurality of arrival signal paths; and

[0199] A position of a user equipment is estimated based on the at least one carrier phase measurement for the at least one arriving signal path of the plurality of arriving signal paths.

[0200] Example 40. A computer-readable medium comprising instructions stored thereon for performing at least the following:

[0201] receiving a request to report a carrier phase measurement of a first detected arrival signal path of a reference signal;

[0202] detecting a plurality of arriving signal paths including the first detected arriving signal path from the reference signal;

[0203] determining line-of-sight indicator values for the detected plurality of arrival signal paths including the first detected arrival signal path; and

[0204] A report is sent based on the determined line-of-sight indicator value for the first detected arrival signal path being not greater than at least one of the line-of-sight indicator values for the other arrival signal paths, the report comprising one of the following: a carrier phase measurement for the first detected arrival signal path when the line-of-sight indicator value for the first detected arrival signal path is greater than a threshold; or a carrier phase measurement for one of the detected multiple arrival signal paths, wherein the one arrival signal path has a maximum line-of-sight indicator value among the determined line-of-sight indicator values for the multiple arrival signal paths; or an average carrier phase measurement for at least one of the multiple arrival signal paths. The carrier phase measurement comprises an RSCP (reference signal carrier phase) measurement and an RSCPD (reference signal carrier phase difference) measurement. The RSCPD is the difference between two different RSCP measurements, wherein the RSCP measurement can be measured based on a single or two different TRPs. In addition, the carrier phase measurement comprises the difference between two different RSCPD measurements, which may also be referred to as (e.g., as) a double differential measurement.

[0205] References to "computers," "processors," and the like should be understood to encompass not only computers having different architectures (such as single / multi-processor architectures and sequential or parallel architectures), but also special-purpose circuits such as field-programmable gate arrays (FPGAs), application-specific circuits (ASICs), signal processing devices, and other processing circuit systems. References to computer programs, instructions, code, and the like should be understood to encompass software or firmware for a programmable processor, such as, for example, the programmable content of a hardware device, whether instructions for a processor or configuration settings for a fixed-function device, gate array, or programmable logic device.

[0206] The memory described herein can be implemented using any suitable data storage technology, such as semiconductor-based memory devices, flash memory, magnetic memory devices and systems, optical memory devices and systems, non-volatile memory, transient memory, fixed memory, and removable memory. The memory can include a database for storing data.

[0207] As used herein, the term "circuitry" may refer to the following: (a) a hardware circuit implementation, such as an implementation in analog and / or digital circuitry, and (b) a combination of circuitry and software (and / or firmware), such as, as applicable: (i) a combination of processor(s), or (ii) portions of processor(s) / software, including digital signal processor(s), software, and memory, which work together to enable the device to perform various functions, and (c) circuitry that requires software or firmware to operate (even if the software or firmware is not physically present), such as microprocessor(s) or portions of microprocessor(s). As another example, as used herein, the term "circuitry" would also cover an implementation of only a processor (or processors) or portion of a processor and its accompanying software and / or firmware. For example, the term "circuitry" would also cover, if applicable to the particular element, a baseband integrated circuit or applications processor integrated circuit for a mobile phone, or a similar integrated circuit in a server, cellular network device, or another network device.

[0208] It should be understood that the above description is illustrative only. Those skilled in the art may devise various alternatives and modifications. For example, the features recited in the various dependent claims may be combined with one another in any suitable combination. Furthermore, the features of the different exemplary embodiments described above may be selectively combined to form new exemplary embodiments. Therefore, this specification is intended to encompass all such alternatives, modifications, and variations that fall within the scope of the appended claims.

[0209] The following abbreviations and abbreviations may appear in the specification and / or drawings (abbreviations and abbreviations may be appended / combined with each other using, for example, dashes, hyphens, slashes, letters or numbers, and may not be case sensitive):

[0210] 3GPP: Third Generation Partnership Project

[0211] 4G: Fourth Generation

[0212] 5G: Fifth Generation

[0213] 5GC: 5G core network

[0214] 6G: Sixth Generation

[0215] AMF: Access and Mobility Management Function

[0216] ASIC: Application-Specific Integrated Circuit

[0217] CD: Compact disc / Computer disc

[0218] CP: Carrier Phase

[0219] CPU: Central Processing Unit

[0220] CU: Central Unit or Centralized Unit

[0221] DL: Downlink

[0222] DSP: Digital Signal Processor

[0223] DU: Distributed Unit

[0224] DVD: Digital Versatile Disc

[0225] eNB: Evolved Node B (e.g., LTE base station)

[0226] EN-DC: E-UTRAN New Radio - Dual Connectivity

[0227] en-gNB: A node that provides NR user plane and control plane protocol termination towards the UE and acts as a secondary node in EN-DC

[0228] E-UTRA: Evolved UMTS Terrestrial Radio Access, i.e., LTE Radio Access

[0229] technology

[0230] E-UTRAN: E-UTRA Network

[0231] F1: Interface between CU and DU

[0232] FPGA: Field Programmable Gate Array

[0233] gNB: A base station for 5G / NR, i.e., a node that provides NR user plane and control plane protocol termination towards the UE and is connected to the 5GC via the NG interface

[0234] IAB: Integrated Access and Backhaul

[0235] I / F: Interface

[0236] I / O: Input / Output

[0237] LMF: Location Management Function

[0238] LoS: Line of sight

[0239] LTE: Long Term Evolution (4G)

[0240] MAC: Media Access Control

[0241] MME: Mobility Management Entity

[0242] MRO: Mobility Robustness Optimization

[0243] N: Indication of a certain number of variable numbers N

[0244] NCE: Network Control Element

[0245] ng or NG: New Generation

[0246] ng-eNB: Next-generation eNB

[0247] NG-RAN: Next Generation Radio Access Network

[0248] NLoS: Non-Line-of-Sight

[0249] NR: New Radio

[0250] N / W: Network

[0251] PDA: Personal Digital Assistant

[0252] PDCP: Packet Data Convergence Protocol

[0253] PFL: Positioning Frequency Layer

[0254] PHY: Physical layer

[0255] PRS: Positioning Reference Signal

[0256] PRU: Positioning Reference Unit

[0257] RAM: Random Access Memory

[0258] RAN: Radio Access Network

[0259] RAT: Radio Access Technology

[0260] Rel: version

[0261] RLC: Radio Link Control

[0262] ROM: Read-Only Memory

[0263] RP: RAN Plenary Session

[0264] RRC: Radio Resource Control

[0265] RRM: Radio Resource Management

[0266] RSCP: Reference Signal Carrier Phase

[0267] RSCPD: Reference Signal Carrier Phase Difference

[0268] RSTD: Reference Signal Time Difference

[0269] RTOA: relative time of arrival

[0270] RU: Radio Unit

[0271] Rx, RX: receive or receiver or reception

[0272] SDAP: Service Data Adaptation Protocol

[0273] SGW: Serving Gateway

[0274] SMF: Session Management Function

[0275] SON: Self-Organizing / Optimizing Network

[0276] SRS: Sounding Reference Signal

[0277] TDOA: Time Difference of Arrival

[0278] TRP: Transmission Reception Point

[0279] TS: Technical Specification

[0280] Tx, TX: Send or transmitter or transmit

[0281] UAV: Unmanned Aerial Vehicle

[0282] UE: User Equipment (e.g., wireless device, typically a mobile device)

[0283] UI: User Interface

[0284] UL: Uplink

[0285] UMTS: Universal Mobile Telecommunications System

[0286] UPF: User Plane Function

[0287] USB: Universal Serial Bus

[0288] UTRAN: UMTS Terrestrial Radio Access Network

[0289] WID: Work Item Description

[0290] X2: Network interface between RAN nodes and between RAN and core network

[0291] Xn: Network interface between NG-RAN nodes

Claims

1. A device for communication, comprising: at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least: receiving a request to report a carrier phase measurement of a first detected arrival signal path of a reference signal; detecting a plurality of arriving signal paths including the first detected arriving signal path from the reference signal; determining a line-of-sight indicator value for the detected plurality of arrival signal paths including the first detected arrival signal path; as well as Sending a report including at least one carrier phase measurement for at least one of the plurality of arrival signal paths based on the determined line-of-sight indicator value for the first detected arrival signal path being not greater than at least one other line-of-sight indicator value for at least one other detected arrival signal path of the plurality of arrival signal paths.

2. The apparatus of claim 1 , wherein the instructions, when executed by the at least one processor, cause the apparatus to at least: An indication is sent to a network entity, the indication indicating that the line-of-sight indicator value for the first detected arrival signal path is not greater than the at least one other line-of-sight indicator value for the at least one other detected arrival signal path of the plurality of arrival signal paths.

3. The apparatus of claim 1 , wherein the instructions, when executed by the at least one processor, cause the apparatus to at least: determining that the line-of-sight indicator value for the first detected arrival signal path is greater than a threshold; determining a carrier phase measurement for the first detected arrival signal path; and In response to determining that the line-of-sight indicator value for the first detected arrival signal path is greater than the threshold, determining to include the carrier phase measurement for the first detected arrival signal path in the report.

4. The apparatus of claim 1 , wherein the instructions, when executed by the at least one processor, cause the apparatus to at least: determining a carrier phase measurement for one of the detected plurality of arriving signal paths, wherein the one arriving signal path has a maximum line-of-sight indicator value among the determined line-of-sight indicator values for the plurality of arriving signal paths; and It is determined to include in the report the carrier phase measurement for the one arriving signal path having the maximum line-of-sight indicator value among the determined line-of-sight indicator values for the plurality of arriving signal paths.

5. The apparatus of claim 4, wherein the instructions, when executed by the at least one processor, cause the apparatus to at least: A determination is made to include in the report an indication of the one arriving signal path having the maximum line-of-sight indicator value.

6. The apparatus of claim 1 , wherein the instructions, when executed by the at least one processor, cause the apparatus to at least: determining an average carrier phase measurement for one or more of the plurality of arriving signal paths; and Determining to include in the report the average carrier phase measurement for the one or more of the plurality of arriving signal paths.

7. The apparatus of claim 6, wherein the instructions, when executed by the at least one processor, cause the apparatus to at least: determining a set of the plurality of arrival signal paths, wherein the line-of-sight indicator values for the arrival signal paths in the set are the same or a difference between the line-of-sight indicator values for the arrival signal paths in the set is less than a threshold; Wherein determining the average carrier phase measurement for the one or more arriving signal paths of the plurality of arriving signal paths comprises: An average carrier phase measurement is determined for the arriving signal paths in the set of the plurality of arriving signal paths.

8. The apparatus of claim 6, wherein the instructions, when executed by the at least one processor, cause the apparatus to at least: determining an arriving signal path having a maximum line-of-sight indicator value among the determined line-of-sight indicator values for the plurality of arriving signal paths; and Wherein determining the average carrier phase measurement for the one or more arriving signal paths of the plurality of arriving signal paths comprises: An average carrier phase measurement is determined for the one arriving signal path having a maximum line-of-sight indicator value among the determined line-of-sight indicator values for the plurality of arriving signal paths.

9. The apparatus of claim 1 , wherein the at least one carrier phase measurement for the at least one of the plurality of arriving signal paths comprises: Reference signal carrier phase measurement.

10. An apparatus for communication, comprising: at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least: sending a request to report a carrier phase measurement of a first detected arrival signal path of a reference signal; receiving a report based on the line-of-sight indicator value for the first detected arrival signal path being not greater than at least one other line-of-sight indicator value for at least one other arrival signal path of a plurality of arrival signal paths for the reference signal, the report including at least one carrier phase measurement for at least one arrival signal path of the plurality of arrival signal paths; as well as A position of a user equipment is estimated based on the at least one carrier phase measurement for the at least one arriving signal path of the plurality of arriving signal paths.

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