WO2024170263A1

WO2024170263A1 - Devices and methods to support time difference measurement based sidelink positioning

Info

Publication number: WO2024170263A1
Application number: PCT/EP2024/052121
Authority: WO
Inventors: Hyun-Su Cha; Ryan Keating; Prajwal KESHAVAMURTHY
Original assignee: Nokia Technologies Oy
Current assignee: Nokia Technologies Oy
Priority date: 2023-02-16
Filing date: 2024-01-30
Publication date: 2024-08-22
Anticipated expiration: 2025-08-16
Also published as: CN120693534A

Abstract

In a system, apparatus, method, and non-transitory computer readable medium for implementing time difference measurement based sidelink (SL) positioning, a network device may be caused to, provide SL positioning configuration to at least one anchor user equipment (UE) device and at least one target UE device, wherein the SL positioning configuration relates to positioning based on two or more antennas with a known time offset, receive timing measurement information from the at least one target UE device, the timing measurement information based on a first timing measurement obtained from a first antenna and a second timing measurement obtained from a second antenna, and estimate a location of the at least one target UE device based on the timing measurement information.

Description

DEVICES AND METHODS TO SUPPORT TIME DIFFERENCE MEASUREMENT BASED SIDELINK POSITIONING BACKGROUND Field Various example embodiments relate to methods, apparatuses, systems, and/or non-transitory computer readable media for implementing time difference measurement based sidelink positioning for one or more user equipment devices. Description of the Related Art A 5th generation mobile network (5G) standard, referred to as 5G New Radio (NR), is being developed to provide higher capacity, higher reliability, higher positioning accuracy, and lower latency communications than the 4G long term evolution (LTE) standard. The 5G NR standard provides user equipment (UE) devices (hereinafter referred to as UE devices or UEs) with an ability to perform direct UE to UE communications (e.g., point-to- point communication), referred to as sidelink (SL) communication, without having the communications transmitted to a base station (BS), radio access network (RAN) node, transmission-reception point (TRP), etc. SUMMARY At least one example embodiment relates to a network device. In at least one example embodiment, the network device may include a memory storing computer readable instructions, and processing circuitry configured to execute the computer readable instructions to cause the network device to, provide sidelink (SL) positioning configuration to at least one anchor user equipment (UE) device and at least one target UE device, wherein the SL positioning configuration relates to positioning based on two or more antennas with a known time offset, receive timing measurement information from the at least one target UE device, the timing measurement information based on a first timing measurement obtained from a first antenna and a second timing measurement obtained from a second antenna, and estimate a location of the at least one target UE device based on the timing measurement information. Some example embodiments provide that the first antenna and the second antenna are associated with the at least one target UE device, and the first antenna and the second antenna are operated using a common clock signal. Some example embodiments provide that the first timing measurement is a first time of arrival measurement of at least one SL-positioning reference signal (PRS) resource obtained using the first antenna, the second timing measurement is a second time of arrival measurement of the at least one SL-PRS resource obtained using the second antenna, and the timing measurement information includes a difference in the first time of arrival measurement and the second time of arrival measurement. Some example embodiments provide that the timing measurement information includes at least one of: relative antenna location information based on a location of the first antenna and a location of the second antenna, a first antenna identifier (ID) associated with the first antenna, a second antenna ID associated with the second antenna, at least one SL-PRS resource ID associated with at least one received SL-PRS resource, or at least one anchor UE ID associated with the at least one anchor UE which transmitted the at least one SL-PRS resource. Some example embodiments provide that the at least one target UE device includes a first target UE device and a second target UE device, the first antenna associated with the first target UE device, and the second antenna associated with the second target UE device. Some example embodiments provide that the timing measurement information includes at least one of: a difference in time of arrival measured by the first antenna and the second antenna, relative antenna location information based on a location of the first antenna and a location of the second antenna, a time offset between a first clock signal and a second clock signal, a first antenna identifier (ID) associated with the first antenna, a second antenna ID associated with the second antenna, at least one SL-PRS resource ID associated with at least one received SL- PRS resource, or at least one anchor UE ID associated with the at least one anchor UE which transmitted the at least one SL-PRS resource, and the first clock signal is associated with the first antenna, and the second clock signal is associated with the second antenna. Some example embodiments provide that the SL positioning configuration configures the at least one anchor UE device to, transmit at least one SL-PRS resource to the at least one target UE device, and report at least one of: at least one anchor UE ID associated with the at least one anchor UE device, at least one antenna ID associated with at least one transmitter antenna used to transmit the at least one SL-PRS resource, at least one SL-PRS resource ID associated with the at least one transmitted SL-PRS resource, or location information corresponding to the at least one anchor UE device. Some example embodiments provide that the at least one anchor UE device includes a first anchor UE device and a second anchor UE device, the SL positioning configuration configures each of the first and second anchor UE devices to transmit first and second SL-PRS resources, respectively, to the at least one target UE device, the SL positioning configuration configures the at least one target UE device to, obtain a first reference signal timing difference (RSTD) measurement of the first SL-PRS resource and the second SL-PRS resource from the first antenna, obtain a second RSTD measurement of the first SL-PRS resource and the second SL- PRS resource from the second antenna, and transmit the timing measurement information, the timing measurement information including a difference of the first RSTD measurement and the second RSTD measurement, and the network device is further caused to, receive location information associated with the first anchor UE device and location information of the second anchor UE device, and estimate the location of the at least one target UE device based on the difference of the first RSTD measurement and the second RSTD measurement, the location information of the first anchor UE device, and the location information of the second anchor UE device. Some example embodiments provide that the SL positioning configuration configures the at least one target UE device to, determine whether the first antenna and the second antenna are in line of sight of at least one transmitter transmitting at least one SL-PRS resource from at least one anchor UE device, and transmit the timing measurement information to the network device in response to results of the determination indicating the first antenna and the second antenna are in line of sight of the at least one transmitter. Some example embodiments provide that the network device is at least one of, a location server, a UE device, or a location management function of a wireless network. At least one example embodiment relates to a user equipment (UE) device. In at least one example embodiment, the UE device may include a memory storing computer readable instructions, and processing circuitry configured to execute the computer readable instructions to cause the UE device to, receive sidelink (SL) positioning configuration from at least one network device, wherein the SL positioning configuration relates to positioning based on two or more antennas with a known time offset, and transmit timing measurement information to the at least one network device based on the SL positioning configuration, the timing measurement information based on a first timing measurement obtained from a first antenna and a second timing measurement obtained from a second antenna. Some example embodiments provide that the UE device further includes the first antenna and the second antenna, wherein the first antenna and the second antenna are configured to operate using a common clock signal. Some example embodiments provide that the UE device is further caused to, receive at least one SL-positioning reference signal (PRS) resource from at least one anchor UE device, obtain the first timing measurement by measuring a first time of arrival of the at least one SL-PRS resource using the first antenna, obtain the second timing measurement by measuring a second time of arrival of the at least one SL-PRS resource using the second antenna, determine a difference between the first timing measurement and the second timing measurement, and transmit the timing measurement information, the timing measurement information including the determined difference. Some example embodiments provide that the UE device is further caused to, determine whether the first antenna and the second antenna are in line of sight of at least one transmitter transmitting the at least one SL-PRS resource from the at least one anchor UE device, and transmit the timing measurement information to the at least one network device in response to results of the determination indicating the first antenna and the second antenna are in line of sight to the at least one transmitter. Some example embodiments provide that the timing measurement information includes at least one of: a difference in time of arrival measured by the first antenna and the second antenna, relative antenna location information based on a location of the first antenna and a location of the second antenna, a time offset between a first clock signal and a second clock signal, the first clock signal associated with the first antenna, and the second clock signal associated with the second antenna, a first antenna identifier (ID) associated with the first antenna, a second antenna ID associated with the second antenna, at least one SL-PRS resource ID associated with at least one received SL-PRS resource, or at least one anchor UE ID associated with the at least one anchor UE which transmitted the at least one SL-PRS resource. Some example embodiments provide that the UE device is further caused to, receive a first SL- PRS resource and a second SL-PRS resource from a first anchor UE device and a second anchor UE device, respectively, obtain a first reference signal timing difference (RSTD) measurement of the first SL-PRS resource and the second SL-PRS resource using the first antenna, obtain a second RSTD measurement of the first SL-PRS resource and the second SL-PRS resource using the second antenna, and transmit the timing measurement information to the at least one network device, the timing measurement information including a difference of the first RSTD measurement and the second RSTD measurement. At least one example embodiment relates to a method of operating a network device. In at least one example embodiment, the method may include providing sidelink (SL) positioning configuration to at least one anchor UE device and at least one target user equipment (UE) device, wherein the SL positioning configuration relates to positioning based on two or more antennas with a known time offset, receiving timing measurement information from the at least one target UE device, the timing measurement information based on a first timing measurement obtained from a first antenna and a second timing measurement obtained from a second antenna, and estimating a location of the at least one target UE device based on the timing measurement information. Some example embodiments provide that the first antenna and the second antenna are associated with the at least one target UE device, the first antenna and the second antenna are operated using a common clock signal, the first timing measurement is a first time of arrival measurement of at least one SL-positioning reference signal (PRS) resource obtained using the first antenna, the second timing measurement is a second time of arrival measurement of the at least one SL-PRS resource obtained using the second antenna, and the timing measurement information includes at least one of: a difference in the first time of arrival measurement and the second time of arrival measurement, relative antenna location information based on a location of the first antenna and a location of the second antenna, a first antenna identifier (ID) associated with the first antenna, a second antenna ID associated with the second antenna, at least one SL-PRS resource ID associated with at least one received SL-PRS resource, or at least one anchor UE ID associated with the at least one anchor UE which transmitted the at least one SL-PRS resource. Some example embodiments provide that the at least one target UE device includes a first target UE device and a second target UE device, the first antenna associated with the first target UE device, and the second antenna associated with the second target UE device, and the timing measurement information includes at least one of: a difference in time of arrival measured by the first antenna and the second antenna, relative antenna location information based on a location of the first antenna and a location of the second antenna, a time offset between a first clock signal and a second clock signal, a first antenna identifier (ID) associated with the first antenna, a second antenna ID associated with the second antenna, at least one SL-PRS resource ID associated with at least one received SL-PRS resource, or at least one anchor UE ID associated with the at least one anchor UE which transmitted the at least one SL-PRS resource, and the first clock signal is associated with the first antenna, and the second clock signal is associated with the second antenna. Some example embodiments provide that in response to the SL positioning configuration, the at least one anchor UE device is configured to, transmit at least one SL-PRS resource to the at least one target UE device, and report at least one of: at least one anchor UE ID associated with the at least one anchor UE device, at least one antenna ID associated with at least one transmitter antenna used to transmit the at least one SL-PRS resource, at least one SL-PRS resource ID associated with the at least one transmitted SL-PRS resource, or location information corresponding to the at least one anchor UE device. Some example embodiments provide that the at least one anchor UE device includes a first anchor UE device and a second anchor UE device, in response to the SL positioning configuration, each of the first and second anchor UE devices are configured to transmit first and second SL-PRS resources, respectively, to the at least one target UE device, in response to the SL positioning configuration, the at least one target UE device is configured to, obtain a first reference signal timing difference (RSTD) measurement of the first SL-PRS resource and the second SL-PRS resource from the first antenna, obtain a second RSTD measurement of the first SL-PRS resource and the second SL-PRS resource from the second antenna, and transmit the timing measurement information, the timing measurement information including a difference of the first RSTD measurement and the second RSTD measurement, and the method may further include, receiving location information associated with the first anchor UE device and location information of the second anchor UE device, and estimating the location of the at least one target UE device based on the difference of the first RSTD measurement and the second RSTD measurement, the location information of the first anchor UE device, and the location information of the second anchor UE device. At least one example embodiment relates to a method of operating a UE device. In at least one example embodiment, the method may include receiving sidelink (SL) positioning configuration from at least one network device, wherein the SL positioning configuration relates to positioning based on two or more antennas with a known time offset, and transmitting timing measurement information to the at least one network device based on the SL positioning configuration, the timing measurement information based on a first timing measurement obtained from a first antenna and a second timing measurement obtained from a second antenna. Some example embodiments provide that the UE device includes the first antenna and the second antenna, and the method may further include, operating the first antenna and the second antenna using a common clock signal. Some example embodiments provide that the method may further include, receiving at least one SL-positioning reference signal (PRS) resource from at least one anchor UE device, obtaining the first timing measurement by measuring a first time of arrival of the at least one SL-PRS resource using the first antenna, obtaining the second timing measurement by measuring a second time of arrival of the at least one SL-PRS resource using the second antenna, determining a difference between the first timing measurement and the second timing measurement, and transmitting the timing measurement information, the timing measurement information including the determined difference. Some example embodiments provide that the method may further include, determining whether the first antenna and the second antenna are in line of sight of at least one transmitter transmitting the at least one SL-PRS resource from the at least one anchor UE device, and transmitting the timing measurement information to the at least one network device in response to results of the determining indicating the first antenna and the second antenna are in line of sight of the at least one transmitter. Some example embodiments provide that the timing measurement information includes at least one of: a difference in time of arrival measured by the first antenna and the second antenna, relative antenna location information based on a location of the first antenna and a location of the second antenna, a time offset between a first clock signal and a second clock signal, the first clock signal associated with the first antenna, and the second clock signal associated with the second antenna, a first antenna identifier (ID) associated with the first antenna, a second antenna ID associated with the second antenna, at least one SL-PRS resource ID associated with at least one received SL-PRS resource, or at least one anchor UE ID associated with the at least one anchor UE which transmitted the at least one SL-PRS resource. Some example embodiments provide that the method may further include, receiving a first SL- PRS resource and a second SL-PRS resource from a first anchor UE device and a second anchor UE device, respectively, obtaining a first reference signal timing difference (RSTD) measurement of the first SL-PRS resource and the second SL-PRS resource using the first antenna, obtaining a second RSTD measurement of the first SL-PRS resource and the second SL-PRS resource using the second antenna, and transmitting the timing measurement information to the at least one network device, the timing measurement information including a difference of the first RSTD measurement and the second RSTD measurement. At least one example embodiment relates to a network device. In at least one example embodiment, the network device may include means for providing sidelink (SL) positioning configuration to at least one anchor user equipment (UE) device and at least one target UE device, wherein the SL positioning configuration relates to positioning based on two or more antennas with a known time offset, receiving timing measurement information from the at least one target UE device, the timing measurement information based on a first timing measurement obtained from a first antenna and a second timing measurement obtained from a second antenna, and estimating a location of the at least one target UE device based on the timing measurement information. Some example embodiments provide that the first antenna and the second antenna are associated with the at least one target UE device, and the first antenna and the second antenna are operated using a common clock signal. Some example embodiments provide that the first timing measurement is a first time of arrival measurement of at least one SL-positioning reference signal (PRS) resource obtained using the first antenna, the second timing measurement is a second time of arrival measurement of the at least one SL-PRS resource obtained using the second antenna, and the timing measurement information includes a difference in the first time of arrival measurement and the second time of arrival measurement. Some example embodiments provide that the timing measurement information includes at least one of: relative antenna location information based on a location of the first antenna and a location of the second antenna, a first antenna identifier (ID) associated with the first antenna, a second antenna ID associated with the second antenna, at least one SL-PRS resource ID associated with at least one received SL-PRS resource, or at least one anchor UE ID associated with the at least one anchor UE which transmitted the at least one SL-PRS resource. Some example embodiments provide that the at least one target UE device includes a first target UE device and a second target UE device, the first antenna associated with the first target UE device, and the second antenna associated with the second target UE device. Some example embodiments provide that the timing measurement information includes at least one of: a difference in time of arrival measured by the first antenna and the second antenna, relative antenna location information based on a location of the first antenna and a location of the second antenna, a time offset between a first clock signal and a second clock signal, a first antenna identifier (ID) associated with the first antenna, a second antenna ID associated with the second antenna, at least one SL-PRS resource ID associated with at least one received SL- PRS resource, or at least one anchor UE ID associated with the at least one anchor UE which transmitted the at least one SL-PRS resource, and the first clock signal is associated with the first antenna, and the second clock signal is associated with the second antenna. Some example embodiments provide that the SL positioning configuration configures the at least one anchor UE device to, transmit at least one SL-PRS resource to the at least one target UE device, and report at least one of: at least one anchor UE ID associated with the at least one anchor UE device, at least one antenna ID associated with at least one transmitter antenna used to transmit the at least one SL-PRS resource, at least one SL-PRS resource ID associated with the at least one transmitted SL-PRS resource, or location information corresponding to the at least one anchor UE device. Some example embodiments provide that the at least one anchor UE device includes a first anchor UE device and a second anchor UE device, the SL positioning configuration configures each of the first and second anchor UE devices to transmit first and second SL-PRS resources, respectively, to the at least one target UE device, the SL positioning configuration configures the at least one target UE device to, obtain a first reference signal timing difference (RSTD) measurement of the first SL-PRS resource and the second SL-PRS resource from the first antenna, obtain a second RSTD measurement of the first SL-PRS resource and the second SL- PRS resource from the second antenna, and transmit the timing measurement information, the timing measurement information including a difference of the first RSTD measurement and the second RSTD measurement, and the network device further includes means for, receiving location information associated with the first anchor UE device and location information of the second anchor UE device, and estimating the location of the at least one target UE device based on the difference of the first RSTD measurement and the second RSTD measurement, the location information of the first anchor UE device, and the location information of the second anchor UE device. Some example embodiments provide that the SL positioning configuration configures the at least one target UE device to, determine whether the first antenna and the second antenna are in line of sight of at least one transmitter transmitting at least one SL-PRS resource from at least one anchor UE device, and transmit the timing measurement information to the network device in response to results of the determination indicating the first antenna and the second antenna are in line of sight of the at least one transmitter. Some example embodiments provide that the network device is at least one of, a location server, a UE device, or a location management function of a wireless network. At least one example embodiment relates to a UE device. In at least one example embodiment, the UE device may include means for, receiving sidelink (SL) positioning configuration from at least one network device, wherein the SL positioning configuration relates to positioning based on two or more antennas with a known time offset, and transmitting timing measurement information to the at least one network device based on the SL positioning configuration, the timing measurement information based on a first timing measurement obtained from a first antenna and a second timing measurement obtained from a second antenna. Some example embodiments provide that the UE device further includes the first antenna and the second antenna, wherein the first antenna and the second antenna are configured to operate using a common clock signal. Some example embodiments provide that the UE device further includes means for, receiving at least one SL-positioning reference signal (PRS) resource from at least one anchor UE device, obtaining the first timing measurement by measuring a first time of arrival of the at least one SL-PRS resource using the first antenna, obtaining the second timing measurement by measuring a second time of arrival of the at least one SL-PRS resource using the second antenna, determining a difference between the first timing measurement and the second timing measurement, and transmitting the timing measurement information, the timing measurement information including the determined difference. Some example embodiments provide that the UE device further includes means for, determining whether the first antenna and the second antenna are in line of sight of at least one transmitter transmitting the at least one SL-PRS resource from the at least one anchor UE device, and transmitting the timing measurement information to the at least one network device in response to results of the determination indicating the first antenna and the second antenna are in line of sight to the at least one transmitter. Some example embodiments provide that the timing measurement information includes at least one of: a difference in time of arrival measured by the first antenna and the second antenna, relative antenna location information based on a location of the first antenna and a location of the second antenna, a time offset between a first clock signal and a second clock signal, the first clock signal associated with the first antenna, and the second clock signal associated with the second antenna, a first antenna identifier (ID) associated with the first antenna, a second antenna ID associated with the second antenna, at least one SL-PRS resource ID associated with at least one received SL-PRS resource, or at least one anchor UE ID associated with the at least one anchor UE which transmitted the at least one SL-PRS resource. Some example embodiments provide that the UE device further includes means for, receiving a first SL-PRS resource and a second SL-PRS resource from a first anchor UE device and a second anchor UE device, respectively, obtaining a first reference signal timing difference (RSTD) measurement of the first SL-PRS resource and the second SL-PRS resource using the first antenna, obtaining a second RSTD measurement of the first SL-PRS resource and the second SL-PRS resource using the second antenna, and transmitting the timing measurement information to the at least one network device, the timing measurement information including a difference of the first RSTD measurement and the second RSTD measurement. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate one or more example embodiments and, together with the description, explain these example embodiments. In the drawings: FIG. 1A illustrates a wireless communication system according to at least one example embodiment; FIG.1B illustrates a first example sidelink positioning configuration according to at least one example embodiment; FIG. 1C illustrates a second example sidelink positioning configuration according to at least one example embodiment; FIG.2 illustrates a block diagram of an example RAN node according to at least one example embodiment; FIG.3 illustrates a block diagram of an example UE device according to at least one example embodiment; and FIG. 4 illustrates an example transmission flow diagram according to some example embodiments. DETAILED DESCRIPTION Various example embodiments will now be described more fully with reference to the accompanying drawings in which some example embodiments are shown. Detailed example embodiments are disclosed herein. However, specific structural and functional details disclosed herein are merely representative for purposes of describing the example embodiments. The example embodiments may, however, be embodied in many alternate forms and should not be construed as limited to only the example embodiments set forth herein. It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the example embodiments. As used herein, the term “and/or,” includes any and all combinations of one or more of the associated listed items. It will be understood that when an element is referred to as being “connected,” or “coupled,” to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being “directly connected,” or “directly coupled,” to another element, there are no intervening elements present. Other words used to describe the relationship between elements should be interpreted in a like fashion (e.g., “between,” versus “directly between,” “adjacent,” versus “directly adjacent,” etc.). The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the example embodiments. As used herein, the singular forms “a,” “an,” and “the,” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises,” “comprising,” “includes,” and/or “including,” when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may in fact be executed substantially concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Specific details are provided in the following description to provide a thorough understanding of the example embodiments. However, it will be understood by one of ordinary skill in the art that example embodiments may be practiced without these specific details. For example, systems may be shown in block diagrams in order not to obscure the example embodiments in unnecessary detail. In other instances, well-known processes, structures and techniques may be shown without unnecessary detail in order to avoid obscuring example embodiments. Also, it is noted that example embodiments may be described as a process depicted as a flowchart, a flow diagram, a data flow diagram, a structure diagram, or a block diagram. Although a flowchart may describe the operations as a sequential process, many of the operations may be performed in parallel, concurrently or simultaneously. In addition, the order of the operations may be re-arranged. A process may be terminated when its operations are completed, but may also have additional steps not included in the figure. A process may correspond to a method, a function, a procedure, a subroutine, a subprogram, etc. When a process corresponds to a function, its termination may correspond to a return of the function to the calling function or the main function. Moreover, as disclosed herein, the term “memory” may represent one or more devices for storing data, including random access memory (RAM), magnetic RAM, core memory, and/or other machine readable mediums for storing information. The term “storage medium” may represent one or more devices for storing data, including read only memory (ROM), random access memory (RAM), magnetic RAM, core memory, magnetic disk storage mediums, optical storage mediums, flash memory devices and/or other machine readable mediums for storing information. The term “computer-readable medium” may include, but is not limited to, portable or fixed storage devices, optical storage devices, wireless channels, and various other mediums capable of storing, containing or carrying instruction(s) and/or data. Furthermore, example embodiments may be implemented by hardware circuitry and/or software, firmware, middleware, microcode, hardware description languages, etc., in combination with hardware (e.g., software executed by hardware, etc.). When implemented in software, firmware, middleware or microcode, the program code or code segments to perform the desired tasks may be stored in a machine or computer readable medium such as a non- transitory computer storage medium, and loaded onto one or more processors to perform the desired tasks. A code segment may represent a procedure, a function, a subprogram, a program, a routine, a subroutine, a module, a software package, a class, or any combination of instructions, data structures, or program statements. A code segment may be coupled to another code segment or a hardware circuit by passing and/or receiving information, data, arguments, parameters, or memory contents. Information, arguments, parameters, data, etc. may be passed, forwarded, or transmitted via any suitable means including memory sharing, message passing, token passing, network transmission, etc. As used in this application, the term “circuitry” and/or “hardware circuitry” may refer to one or more or all of the following: (a) hardware-only circuit implementation (such as implementations in only analog and/or digital circuitry); (b) combinations of hardware circuits and software, such as (as applicable): (i) a combination of analog and/or digital hardware circuit(s) with software/firmware, and (ii) any portions of hardware processor(s) with software (including digital signal processor(s)), software, and memory(ies) that work together to cause an apparatus, such as a mobile phone or server, to perform various functions); and (c) hardware circuit(s) and/or processor(s), such as microprocessor(s) or a portion of a microprocessor(s), that requires software (e.g., firmware) for operation, but the software may not be present when it is not needed for operation. For example, the circuitry more specifically may include, but is not limited to, a central processing unit (CPU), an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate array (FPGA), a System-on-Chip (SoC), a programmable logic unit, a microprocessor, application-specific integrated circuit (ASIC), etc. This definition of circuitry applies to all uses of this term in this application, including in any claims. As a further example, as used in this application, the term circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and/or firmware. The term circuitry also covers, for example and if applicable to the particular claim element, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in server, a cellular network device, or other computing or network device. While the various example embodiments of the present disclosure are discussed in connection with the 5G wireless communication standard for the sake of clarity and convenience, the example embodiments are not limited thereto, and one of ordinary skill in the art would recognize the example embodiments may be applicable to other wireless communication standards, such as the 4G standard, a Wi-Fi standard, a future 6G standard, a future 7G standard, etc. Various example embodiments are directed towards using SL communications to perform location estimation of UE devices. While previous 5G NR protocol releases implemented support for UE position estimation using downlink (DL) time difference of arrival (TDOA), uplink (UL) TDOA, and multi-round trip time (RTT), each of these techniques required a target UE (e.g., the UE whose location is to be estimated and/or determined) to take reference signal time difference (RSTD), relative time of arrival (RTOA), and/or UE RX-TX time difference measurements from a plurality of TRPs and/or cells, respectively, DL-TDOA and UL-TDOA techniques are vulnerable to time synchronization errors between multiple TRPs. On the other hand, Multi-RTT is robust to the time synchronization error, but it requires both uplink and downlink resources. Consequently, these techniques resulted in wasteful consumption of network resources by requiring the transmission of reference signals from two or more cells and/or TRPs, etc. Accordingly, there is a desire to reduce the network burden of UE position estimation by implementing time difference measurement based sidelink positioning for at least one target UE device using at least two receiving antennas, wherein SL resources are transmitted by at least one anchor UE device, but the example embodiments are not limited thereto. According to at least one example embodiment, network resource usage is reduced and/or improved over conventional network-assisted location estimation techniques. For example, one or more example embodiments may reduce and/or improve network resource usage because the location of the target UE device may be estimated and/or determined using a reference signal transmitted by a single transmitting source or using two transmitting sources, as opposed to three or more transmitting sources used for the conventional network-assisted location estimation techniques, etc. In addition, one or more example embodiments provide improved positioning accuracy because the RSTD measurement-based positioning estimation is robust to time synchronization errors caused by having multiple transmitting sources as seen in the conventional network-assisted location estimation techniques, and/or may allow for effective mitigation of transmission timing errors due to the group delays, etc. FIG. 1A illustrates a wireless communication system according to at least one example embodiment. FIG.1B illustrates a first example sidelink positioning configuration comprising a single target UE device and a single anchor UE device according to at least one example embodiment. FIG. 1C illustrates a second example sidelink positioning configuration comprising a single target UE device and a plurality of anchor UE devices according to at least one example embodiment. As shown in FIG. 1A, a wireless communication system includes a core network 100, and a Data Network 105, a first radio access network (RAN) node 110, a first user equipment device (e.g., UE device or UE, etc.) 120, a second UE device 130, and/or a third UE device 140, etc., but the example embodiments are not limited thereto and the example embodiments may include a greater or lesser number of constituent elements. For example, the wireless communication system may include two or more RAN nodes, one or two UE devices, four or more UE devices, additional TRPs (e.g., base stations, routers, access points, gateways, etc.), but the example embodiments are not limited thereto. According to at least one example embodiment, UE device 120 may be a target UE device (e.g., the UE device whose position and/or location information is to be determined by the network, and/or the UE device which takes SL-positioning reference signal (PRS) resource measurements, etc.), and the UE device 130 may be an anchor UE device (e.g., the UE device which transmit the SL-PRS resources, etc.), but the example embodiments are not limited thereto, and for example, there may be two or more anchor UE devices, etc. Moreover, the UE device 140 may be a computing device (e.g., a server UE, a location server, etc.) which requests and/or initiates the performance of the SL-based positioning estimation of the target UE device, etc. The RAN node 110, the UE device 120, the UE device 130, and/or the UE device 140 may be connected over a wireless network, such as a cellular wireless access network (e.g., a 3G wireless access network, a 4G-Long Term Evolution (LTE) network, a 5G-New Radio (e.g., 5G) wireless network, a 6G wireless network, a WiFi network, etc.). The wireless network may include a core network 100 and/or a Data Network 105. The RAN node 110 may connect to other RAN nodes (not shown), as well as to the core network 100 and/or the Data Network 105, over a wired and/or wireless network. The core network 100 and the Data Network 105 may connect to each other over a wired and/or wireless network. The Data Network 105 may refer to the Internet, an intranet, a wide area network, etc. According to some example embodiments, the RAN node 110 may act as a relay node (e.g., an integrated access and backhaul (IAB) node) and may communicate with the UE devices 120, 130, and/or 140, etc., in combination with at least one TRP (e.g., base station, access point (AP), router, etc.) (not shown) of the same or different radio access technology (e.g., WiFi, etc.). The UE devices 120, 130, and/or 140, etc., may be any one of, but not limited to, a mobile device, a smartphone, a tablet, a laptop computer, a wearable device, an Internet of Things (IoT) device, a sensor (e.g., thermometers, humidity sensors, pressure sensors, motion sensors, accelerometers, etc.), actuators, robotic devices, robotics, drones, connected medical devices, eHealth devices, smart city related devices, a security camera, a ground vehicle, an aerial vehicle, autonomous devices (e.g., autonomous cars, etc.), a desktop computer and/or any other type of stationary or portable device capable of operating according to, for example, the 5G NR communication standard, and/or other wireless communication standard(s). The UE devices 120, 130, and/or 140, etc., may be configurable to transmit and/or receive data in accordance to strict latency, reliability, and/or accuracy requirements, such as SL communication, SL-discontinuous reception (DRX) communications, ultra-reliable, low- latency communications (URLLC), time sensitive communication (TSC), etc., but the example embodiments are not limited thereto. According to at least one example embodiment, the UE devices 120, 130, and/or 140 may be members of an SL group and/or UE group and may be configured to perform SL communication. For example, a location management function (LMF) 101 of the core network 100, the RAN node 110 and/or a location server 140, etc., may provide SL configuration information to the UE devices 120, 130, etc., and the SL configuration information configures the UE devices 120, 130, etc., to perform SL-based positioning based on one or more methods discussed herein in connection with FIGS.1B, 1C, and 4, but are not limited thereto. According to at least one example embodiment, at least one UE device, such as the UE device 120, may be a target UE device and/or a receiving (RX) UE device (e.g., a UE device performing SL reception), and at least one UE device, such as the UE devices 130 and/or 140, may be an anchor UE device and/or a transmitting (TX) UE device (e.g., a UE device performing SL transmission), and/or at least one UE device, such as UE device 140, may be a location server UE device and/or a coordinating (CO) UE device (e.g., a UE device configured to request the location information of the target UE device, transmit SL positioning configuration information to the anchor UE device and/or the target UE device (e.g., transmit SL positioning reference signal resource configuration and a request of SL PRS measurement reporting to the anchor UE device and/or the target UE device, etc.), and/or estimate or determine the position of the target UE device, etc.) (not shown), but the example embodiments are not limited thereto. It is noted that a UE device of the SL group may operate as an anchor UE or a target UE from time to time for SL communication of the SL group. For example, at a first point in time, the UE device 120 may be configured to operate as a target UE device, the UE device 130 may be configured to operate as an anchor UE device, and the UE device 140 may be configured to operate as the location server, but at a second point in time, the UE device 120 may be configured to operate as an anchor UE device, the UE device 130 may be configured to operate as the location server, and the UE device 140 may be configured to operate as the target UE device, or any combinations and/or variations thereof. The methods of estimating and/or determining the position information of the at least one target UE device using SL communications will be discussed in further detail in connection with FIGS.1B, 1C, and 4. The wireless communication system further includes at least one RAN node (e.g., a TRP, a base station, a wireless access point, etc.), such as RAN node 110, etc. The RAN node 110, etc., may operate according to at least one underlying cellular and/or wireless radio access technology (RAT), such as 5G NR, LTE, Wi-Fi, etc. For example, the RAN node 110 may be a 5G gNB node, a LTE eNB node, or a LTE ng-eNB node, etc., but the example embodiments are not limited thereto. The RAN node 110 may provide wireless network services to one or more UE devices within one or more cells (e.g., cell service areas, broadcast areas, serving areas, coverage areas, etc.) surrounding the respective physical location of the RAN node, such as a cell 110A surrounding the RAN node 110, etc. For example, UE devices 120, 130, and/or 140 are located within the cell service area 110A, and may connect to, receive broadcast messages from, receive paging messages from, receive/transmit signaling messages from/to, and/or access the wireless network through, etc., RAN node 110 (e.g., the source RAN node serving the UE device, etc.), but the example embodiments are not limited thereto. According to other example embodiments, one or more UE devices, such as the target UE device 120, may not be located within the cell service area 110A, may not be connected to the RAN node 110, may use a different RAT than the RAN node 110, etc., and instead, the location server 140 and/or the anchor UE device 130 may communicate with the target UE device 120 using SL communication, etc. While FIG. 1A illustrates a single cell for the RAN node 110, the example embodiments are not limited thereto, and for example, the RAN node may provide a plurality of cells, etc. Additionally, the RAN node 110 may be configured to operate in a multi-user (MU) multiple input multiple out (MIMO) mode and/or a massive MIMO (mMIMO) mode, wherein the RAN node 110 transmits a plurality of beams (e.g., radio channels, datastreams, streams, etc.) in different spatial domains and/or frequency domains using a plurality of antennas (e.g., antenna panels, antenna elements, an antenna array, etc.) and beamforming and/or beamsteering techniques. The RAN node 110 may be connected to at least one core network device 101 residing on the core network 100, such as a core network element, a core network server, access points, switches, routers, nodes, etc., but the example embodiments are not limited thereto. The core network 100 and/or the at least one core network device 101 may provide network functions, such as a location management function (LMF), an access and mobility management function (AMF), a session management function (SMF), a policy control function (PCF), a unified data management (UDM), a user plane function (UPF), an authentication server function (AUSF), an application function (AF), and/or a network slice selection function (NSSF), etc., and/or equivalent functions, but the example embodiments are not limited thereto. According to at least one example embodiment, a LMF network device 101 may provide SL positioning configuration information to the at least one anchor UE device and/or the at least one target UE device, may request the location information of the target UE device, and/or estimate or determine the position of the target UE device, etc. According to at least one example embodiment, the location information requested from the target UE device may include positioning and/or timing measurements measured using sidelink reference signals, such as sidelink PRS, etc., but the example embodiments are not limited thereto. The methods for estimating and/or determining the position information of the at least one target UE device using SL communications will be discussed in additional detail in connection with FIGS.1B, 1C, and 4. While certain components of a wireless communication network are shown as part of the wireless communication system of FIG.1A, the example embodiments are not limited thereto, and the wireless communication network may include components other than that shown in FIG. 1A, which are desired, necessary, and/or beneficial for operation of the underlying networks within the wireless communication system, such as access points, switches, routers, nodes, servers, gateways, etc. Referring now to FIG.1B, according to at least one example embodiment, a position of a target UE device 120 may be determined using at least one anchor UE device 130 transmitting at least one SL-PRS resource, but the example embodiments are not limited thereto. As shown in FIG. 1B, a target UE device 120 and an anchor UE device 130 may be implemented as vehicles, but the example embodiments are not limited thereto, and for example, the target UE device and/or the anchor UE device may be other types of mobile UE devices, may be stationary UE devices, may be TRPs, etc. The target UE device 120 may include at least two receiving (RX) antennas and/or the anchor UE device 130 may include at least one transmitting (TX) antenna, but are not limited thereto. As discussed above in connection with FIG.1A, the target UE device 120 and the anchor UE device 130 may receive SL configuration information from the core network 100, e.g., from the LMF 101 through the RAN node 110, and/or may receive the SL configuration information from a location server UE device 140, etc. The SL configuration information may include one or more parameters related to the SL communications between the anchor UE device 130 and the target UE device 120, such as SL-positioning reference signal (PRS) resource parameters (e.g., the time-frequency information related to the SL-PRS resource), instructions (e.g., commands, indications, etc.) for the anchor UE device 130 which cause the anchor UE device 130 to transmit one or more SL-PRS resources based on and/or using the SL-PRS resource parameters to the target UE device 120, instructions for the target UE device 120 which cause the target UE device 120 to receive the transmitted SL-PRS resource(s) using at least a first RX antenna and a second RX antenna, and measure and/or determine a time difference between the reception of the SL-PRS resource(s) using the first RX antenna and the second RX antenna, etc. Additionally, the SL configuration information may further include reporting instructions (and/or commands, indications, etc.) for the anchor UE device 130, such as an instruction for the anchor UE device 130 to report at least one of: an anchor UE identifier (ID) associated with the anchor UE device 130, at least one TX antenna ID associated with at least one TX antenna used to transmit the at least one SL-PRS resource, at least one SL-PRS resource ID associated with the at least one transmitted SL-PRS resource, and/or location information corresponding to the location of the anchor UE device 130, etc. The SL configuration information may also include reporting instructions for the target UE device 120, such as an instruction for the target UE device 120 at least one of: timing measurement information (e.g., information related to spatial reference signal time difference (SP-RSTD) measurements of the at least one SL-PRS resource transmitted by a single anchor UE device, the SP-RSTD measurements taken using the first and second RX antennas, information related to differential RSTD measurements of at least two SL-PRS resources transmitted by at least two anchor UE devices, the differential RSTD measurements including a difference in the RSTD measurements taken of the two SL- PRS resources using the first and second RX antennas, respectively), the RX antenna IDs associated with the first and second RX antennas, relative antenna location information associated with the first and second RX antennas (e.g., the antenna location information of the second RX antenna from the first RX antenna, etc., such as the relative distance of the second RX antenna from the first RX antenna), a known time offset between the clock signal connected to the first RX antenna in comparison to the clock signal connected to the second RX antenna (wherein the clock signal time offset is 0 if the first and second RX antenna are connected to a common clock signal (e.g., the same clock signal, etc.)), an indication that the first and second RX antennas were in the line of sight of the TX antenna(s) which transmitted the SL-PRS resource(s) being measured, etc., but the example embodiments are not limited thereto. As shown in FIG.1B, the anchor UE device 130 may be configured by the SL configuration information to transmit a SL-PRS resource to the target UE device 120 at a specified and/or desired time. The target UE device 120 may be configured by the SL configuration information to determine whether the first and second RX antennas are within line of sight of the at least one TX antenna of the anchor UE device 130, and if so, may receive the SL-PRS resource using the first and second RX antennas, measure a difference in the time of arrival (TOA) of the SL-PRS resource at the first and second RX antennas using SP-RSTD and/or differential RSTD based on the known time offset between the clock signal connected to the first and second RX antennas, and then report the timing measurement information to the requesting LMF 101 and/or location server 140, etc. The LMF 101 (and/or the location server, the server UE 140, etc.) may then determine and/or estimate the position (e.g., location) of the target UE device 120 using the timing measurement information, the relative location information between the first and second RX antennas, and/or the location information of the anchor UE device 130, etc. The methods for performing the measurement of the TOA of the SL-PRS resource using SP-RSTD and/or differential RSTD, and determining the position of the target UE device will be discussed in greater detail in connection with FIG.4. As shown in FIG. 1C, in at least one other example embodiment, the position of a target UE device 120 may be determined using at least two anchor UE devices 130 and 131 transmitting at least one SL-PRS resource each, but the example embodiments are not limited thereto. While FIG. 1C depicts the target UE device 120 and the anchor UE devices 130 and 131 as being vehicles, the example embodiments are not limited thereto, and the target UE device and/or the anchor UE devices may be stationary and/or mobile devices capable of transmitting and/or receiving SL-PRS resources. For example, one or more of the anchor UE devices 130 and 131 may be TRPs, such as a RAN node, a base station, an AP, etc. The anchor UE device 130 may be configured by the SL configuration information to transmit at least one first SL-PRS resource at a first desired and/or specified time to the at least one target UE device 120 using at least one first TX antenna, and the anchor UE device 140 may be configured by the SL configuration information to transmit at least one second SL-PRS resource at a second desired and/or specified time to the at least one target UE device 120 using at least one second TX antenna, etc. The target UE device 120 may be configured by the SL configuration information to determine whether the first and second RX antennas are within line of sight of the at least one TX antenna of the anchor UE device 130 and the at least one TX antenna of the anchor UE device 131. In response to the RX antennas of the target UE device 120 being in the line of sight of the TX antenna(s) of the anchor UE devices 130 and 131, the target UE device 120 may measure the TOA of the first SL-PRS resource and the second SL-PRS resource received by the first RX antenna and calculate the RSTD measurement at the first RX antenna using the difference of the TOA of the first SL-PRS resource and the TOA of the second SL-PRS resource measured by the first RX antenna. Additionally, the target UE device may measure the TOA of the first SL-PRS resource and the TOA of the second SL-PRS resource received by the second RX antenna and calculate the RSTD measurement at the second RX antenna using the difference of the TOA of the TOA of the first SL-PRS resource and the TOA of the second SL-PRS resource measured by the second RX antenna. Then the target UE device 120 may determine the differential RSTD measurement based on a difference in the calculated RSTD measurement of the first RX antenna and the calculated RSTD measurement of the second RX antenna, etc. The target UE device 120 may report the timing measurement information related to the first SL-PRS resource and the second SL-PRS resource (e.g., the differential RSTD measurement information) to the LMF 101 and/or the location server 140, etc. The LMF 101 (and/or the location server 140, etc.) may then determine and/or estimate the position (e.g., location) of the target UE device 120 using the timing measurement information of the first SL-PRS resource, the second SL- PRS resource, the relative location information between the first and second RX antennas, and/or the location information of the anchor UE devices 130 and 131, etc. Moreover, while FIGS. 1B and 1C depict SL-based positioning systems including a single target UE device, the example embodiments are not limited thereto, and for example, two or more target UE devices may be used. In these example embodiments, the SL-PRS resource(s) transmitted by the anchor UE device(s) may be received by at least one first RX antenna at a first target UE device and at least one second RX antenna at a second target UE device, and the first target UE device and the second target UE device may report the timing measurement information of the first SL-PRS resource, the second SL-PRS resource, the relative location information between the first and second RX antennas (e.g., the relative location information of the second target UE device in relation to the reference location of the first target UE device), the time offset between the clock signal associated with the first RX antenna and the clock signal associated with the second RX antenna, etc., and the LMF 101 and/or the location server 140 may estimate the locations of the first and second target UE devices using the reported information. FIG.2 illustrates a block diagram of an example RAN node according to at least one example embodiment. The RAN node of FIG.2 may correspond to the RAN node 110 of FIG.1A, but the example embodiments are not limited thereto. Referring to FIG. 2, a RAN node 2000 may include processing circuitry 2100, at least one communication bus 2200, a memory 2300, at least one core network interface 2400, and/or at least one wireless antenna array 2500, etc., but the example embodiments are not limited thereto. For example, the core network interface 2400 and the wireless antenna array 2500 may be combined into a single network interface, etc., or the RAN node 2000 may include a plurality of wireless antenna arrays, a plurality of core network interfaces, etc., and/or any combinations thereof. The memory 2300 may include various special purpose program code including computer executable instructions which may cause the RAN node 2000 to perform the one or more of the methods discussed in connection with FIGS.1B, 1C, and 4. In at least one example embodiment, the processing circuitry 2100 may include at least one processor (and/or processor cores, distributed processors, networked processors, etc.), which may be configured to control one or more elements of the RAN node 2000, and thereby cause the RAN node 2000 to perform various operations. The processing circuitry 2100 is configured to execute processes by retrieving program code (e.g., computer readable instructions) and data from the memory 2300 to process them, thereby executing special purpose control and functions of the entire RAN node 2000. Once the special purpose program instructions are loaded into the processing circuitry 2100, the processing circuitry 2100 executes the special purpose program instructions, thereby transforming the processing circuitry 2100 into a special purpose processor/special purpose processing circuitry. In at least one example embodiment, the memory 2300 may be a non-transitory computer- readable storage medium and may include a random access memory (RAM), a read only memory (ROM), and/or a permanent mass storage device such as a disk drive, or a solid state drive. Stored in the memory 2300 is program code (i.e., computer readable instructions) related to operating the RAN node 2000, such as the methods discussed in connection with FIGS.1B, 1C, and 4, the at least one core network interface 2400, and/or at least one wireless antenna array 2500, etc. Such software elements may be loaded from a non-transitory computer- readable storage medium independent of the memory 2300, using a drive mechanism (not shown) connected to the RAN node 2000, or via the at least one core network interface 2400, and/or at least one wireless antenna array 2500, etc. In at least one example embodiment, the communication bus 2200 may enable communication and data transmission to be performed between elements of the RAN node 2000. The bus 2200 may be implemented using a high-speed serial bus, a parallel bus, and/or any other appropriate communication technology. According to at least one example embodiment, the RAN node 2000 may include a plurality of communication buses (not shown), such as an address bus, a data bus, etc. The RAN node 2000 may operate as, for example, a 4G RAN node, a 5G RAN node, etc., and may be configured to schedule time domain resource allocations (TDRAs), e.g., orthogonal frequency division multiplexing (OFDM) symbols, physical resource blocks (PRBs), resource elements, etc., for UE devices connected to the RAN node 2000, but the example embodiments are not limited thereto. For example, the RAN node 2000 may allocate time-frequency resources of a carrier (e.g., resource blocks with time and frequency dimensions) based on operation on the time domain (e.g., time division duplexing) and/or the frequency domain (e.g., frequency division duplexing). In the time domain context, the RAN node 2000 will allocate a carrier (or subbands of the carrier) to one or more UEs (e.g., UE 120, etc.) connected to the RAN node 2000 during designated upload (e.g., uplink (UL)) time periods and designated download (e.g., downlink (DL)) time periods, or during designated special (S) time periods which may be used for UL and/or DL, but the example embodiments are not limited thereto. When there are multiple UEs connected to the RAN node 2000, the carrier is shared in time such that each UE is scheduled by the RAN node 2000, and the RAN node 2000 allocates each UE with their own uplink time and/or downlink time. In the frequency domain context and/or when performing spatial domain multiplexing of UEs (e.g., MU MIMO, etc.), the RAN node 2000 will allocate separate frequency subbands of the carrier to UEs simultaneously served by the RAN node 2000, for uplink and/or downlink transmissions. Data transmission between the UE and the RAN node 2000 may occur on a radio frame basis in both the time domain and frequency domain contexts. The minimum resource unit for allocation and/or assignment by the RAN node 2000 to a particular UE device corresponds to a specific downlink/uplink time interval (e.g., one OFDM symbol, one slot, one minislot, one subframe, etc.) and/or a specific downlink/uplink resource block (e.g., twelve adjacent subcarriers, a frequency subband, etc.). For the sake of clarity and consistency, the example embodiments will be described as using the time domain, but the example embodiments are not limited thereto. Additionally, the RAN node 2000 may transmit scheduling information via physical downlink control channel (PDCCH) information to the one or more UE devices located within the cell servicing area of the RAN node 2000, which may configure the one or more UE devices to transmit (e.g., UL transmissions via physical uplink control channel (PUCCH) information and/or physical uplink shared channel information (PUSCH), etc.) and/or receive (e.g., DL transmissions via PDCCH and/or physical downlink shared channel information (PDSCH), etc.) data packets to and/or from the RAN node 2000. Additionally, the RAN node 2000 may transmit control messages to the UE device using downlink control information (DCI) messages via physical (PHY) layer signaling, medium access control (MAC) layer control element (CE) signaling, radio resource control (RRC) signaling, etc., but the example embodiments are not limited thereto. The RAN node 2000 may also include at least one core network interface 2400, and/or at least one wireless antenna array 2500, etc. The at least one wireless antenna array 2500 may include an associated array of radio units (not shown) and may be used to transmit the wireless signals in accordance with a radio access technology, such as 4G LTE wireless signals, 5G NR wireless signals, etc., to at least one UE device, such as UE 120, etc. According to some example embodiments, the wireless antenna array 2500 may be a single antenna, or may be a plurality of antennas, etc. For example, the wireless antenna array 2500 may be configured as a grid of beams (GoB) which transmits a plurality of beams in different directions, angles, frequencies, and/or with different delays, etc., but the example embodiments are not limited thereto. The RAN node 2000 may communicate with a core network (e.g., backend network, backhaul network, backbone network, Data Network, etc.) of the wireless communication network via a core network interface 2400. The core network interface 2400 may be a wired and/or wireless network interface and may enable the RAN node 2000 to communicate and/or transmit data to and from to network devices on the backend network, such as a core network gateway (not shown), a Data Network (e.g., Data Network 105), such as the Internet, intranets, wide area networks, telephone networks, VoIP networks, etc. While FIG. 2 depicts an example embodiment of a RAN node 2000, the RAN node is not limited thereto, and may include additional and/or alternative architectures that may be suitable for the purposes demonstrated. For example, the functionality of the RAN node 2000 may be divided among a plurality of physical, logical, and/or virtual network elements, such as a centralized unit (CU), a distributed unit (DU), a remote radio head (RRH), and/or a remote radio unit (RRU), etc. Additionally, the RAN node 2000 may operate in standalone (SA) mode and/or non-standalone (NSA) mode using interfaces (not shown) such as X2, Xn, etc., between the RAN node 2000 and other RAN nodes of the wireless network, interfaces, such as S1, NG, etc., between the RAN node 2000 and the core network (e.g., core network 100), interfaces between network functions of the RAN node 2000 operating in a distributed and/or virtual RAN mode (not shown), such as F1, E1, etc., and/or interfaces between the physical layer (e.g., a baseband unit, etc.) and the radio layer (e.g., a remote radio head (RRH), core network interface 2400, etc.) (not shown), such as common public radio interface (CPRI), enhanced CPRI (eCPRI), etc., but the example embodiments are not limited thereto. FIG.3 illustrates a block diagram of an example UE device according to at least one example embodiment. The example UE device 3000 of FIG.3 may correspond to one or more of the UE devices 120, 130, and 140 of FIG.1A, but the example embodiments are not limited thereto. Referring to FIG. 3, a UE 3000 may include processing circuitry 3100, at least one communication bus 3200, a memory 3300, a plurality of wireless antennas and/or wireless antenna panels 3400, at least one input/output (I/O) device 3600 (e.g., a keyboard, a touchscreen, a mouse, a microphone, a camera, a speaker, etc.), and/or a display panel 3700 (e.g., a monitor, a touchscreen, etc.), but the example embodiments are not limited thereto. According to some example embodiments, the UE 3000 may include a greater or lesser number of constituent components, and for example, the UE 3000 may also include at least one sensor 3500, such as one or more proximity sensors (e.g., an infra-red proximity sensor, a capacitive proximity sensor, etc.), one or more location sensors (e.g., GPS, GLONASS, Beidou, Galileo, etc.), other sensors (e.g., thermometers, humidity sensors, pressure sensors, motion sensors, accelerometers, etc.), a battery, actuators, a single wireless antenna and/or a single wireless antenna panel, etc. Additionally, the display panel 3700, and/or I/O device 3600, etc., of UE 3000 may be optional. In at least one example embodiment, the processing circuitry 3100 may include at least one processor (and/or processor cores, distributed processors, networked processors, etc.), which may be configured to control one or more elements of the UE 3000, and thereby cause the UE 3000 to perform various operations. The processing circuitry 3100 is configured to execute processes by retrieving program code (e.g., computer readable instructions) and data from the memory 3300 to process them, thereby executing special purpose control and functions of the entire UE 3000. Once the special purpose program instructions are loaded into the processing circuitry 3100, the processing circuitry 3100 executes the special purpose program instructions, thereby transforming the processing circuitry 3100 into a special purpose processor/special purpose processing circuitry. In at least one example embodiment, the memory 3300 may be a non-transitory computer- readable storage medium and may include a random access memory (RAM), a read only memory (ROM), and/or a permanent mass storage device such as a disk drive, or a solid state drive. Stored in the memory 3300 is program code (i.e., computer readable instructions) related to operating the UE 3000, such as the methods discussed in connection with FIGS.1B, 1C, and 4, etc. Such software elements may be loaded from a non-transitory computer-readable storage medium independent of the memory 3300, using a drive mechanism (not shown) connected to the UE 3000, or via the wireless antenna 3400, etc. Additionally, the memory 3300 may store network configuration information, such as system information, resource block scheduling, SL configuration, etc., for communicating with at least one RAN node, e.g., RAN node 110, communicating with at least one UE device, e.g., UE devices 120, 130, 140, etc., accessing a wireless network, etc., but the example embodiments are not limited thereto. In at least one example embodiment, the at least one communication bus 3200 may enable communication and data transmission/reception to be performed between elements of the UE 3000. The bus 3200 may be implemented using a high-speed serial bus, a parallel bus, and/or any other appropriate communication technology. According to at least one example embodiment, the UE 3000 may include a plurality of communication buses (not shown), such as an address bus, a data bus, etc. The UE 3000 may also include at least one wireless antenna panel 3400, but is not limited thereto. For example, if the UE 3000 is a target UE device, the UE 3000 may include two or more wireless antenna panels 3400 located at known distances from each other. The at least one wireless antenna panel 3400 may include at least one associated radio unit (not shown) and may be used to transmit wireless signals in accordance with at least one desired radio access technology, such as 4G LTE, 5G NR, Wi-Fi, etc. Additionally, the at least one wireless antenna panel 3400 may be configured to transmit and/or receive SL communications from one or more UE devices, etc., on one or more SL resources, such as a physical sidelink feedback channel (PSFCH), a physical sidelink control channel (PSCCH), a physical sidelink shared channel (PSSCH), and/or SL slots, etc., assigned to an associated SL group, but the example embodiments are not limited thereto. Additionally, a first UE device may act as a relay for at least one second UE device, for example, wherein the first UE device receives data destined for the at least one second UE device from the RAN node 110, and then forwards the received data to the at least one second UE device, etc., thereby improving the reliability of wireless transmission and/or extending the range of wireless transmissions, but the example embodiments are not limited thereto. For example, there may be more than one relay UE device, the relay UE device may receive data from a UE device destined for the RAN node and/or core network, etc. When there are two or more wireless antenna panels 3400 included in the UE 3000, the two or more wireless antenna panels 3400 may be located at different physical locations on the body of the UE 3000, may have the same or different orientations, may operate in the same or different frequency ranges, may operate in accordance with the same or different radio access technology, etc. According to some example embodiments, the UE 3000 may measure one or more radio signal power and/or signal quality metrics using the at least one wireless antenna panel 3400 corresponding to SSB and/or CSI-RS signals transmitted by one or more RAN nodes, such as a source RAN node (e.g., RAN node 110) and/or one or more target RAN nodes (e.g., RAN nodes 111 and/or 112, etc.), but the example embodiments are not limited thereto. More specifically, the UE 3000 may measure radio signal power and/or cell quality metrics such as reference signal received power (RSRP) (e.g., SS-RSRP and/or CSI-RSRP, etc.), reference signal received quality (RSRQ) (e.g., SS-RSRQ and/or CSI-RSRQ, etc.), received signal strength indicator (RSSI) (e.g., NR-RSSI, CSI-RSSI, etc.), signal to interference and noise ratio (SINR) (e.g., SS-SINR, CSI-SINR), etc., but the example embodiments are not limited thereto. Additionally, the UE 3000 may also take timing measurements (e.g., SP-RSTD measurements, differential RSTD measurements, etc.) of SL-PRS resources at desired, specified, configured, and/or indicated times. Moreover, the UE 3000 may determine whether the wireless antenna panel 3400 is within line of sight of a transmitting antenna (e.g., the transmitting antenna of an anchor UE device, etc.) based on line of sight measurements. For example, the UE 3000 may differentiate between line of sight (LOS) and non-line of sight (NLOS) channels based on channel profile data obtained from the network. While FIG. 3 depicts an example embodiment of a UE 3000, the UE device is not limited thereto, and may include additional and/or alternative architectures that may be suitable for the purposes demonstrated. FIG. 4 illustrates an example transmission flow diagram according to some example embodiments. While FIG. 4 corresponds to the single target UE device/single anchor UE device system illustrated in FIG.1B, the example embodiments are not limited thereto, and the methods discussed in FIG.4 may be adapted for use with the single target UE device/plurality of UE anchor devices system illustrated in FIG.1C, a plurality of target UE devices/plurality of UE anchor devices system, etc. Additionally, while the following example embodiments assume the use of two-dimensional position and/or location information, e.g., x and y coordinate information, for the sake of brevity and clarity, the example embodiments are not limited thereto, and the methods and equations discussed below may be adapted to use and/or calculate greater than two-dimensional position and/or location information, e.g., three- dimensional position and/or location information, x, y, and z coordinate information, etc. Referring now to FIG. 4, FIG. 4 is an example transmission flow diagram illustrating SL communication between a target UE device 120, an anchor UE device 130, and a RAN node (e.g., RAN node 110) implementing the LMF 101, but the example embodiments are not limited thereto, and for example, the role of the LMF 101 may be replaced by a location server, a server UE, etc. According to at least one example embodiment, in operation S4010, the LMF 101 may provide SL-PRS configuration information to the target UE device 120 and the anchor UE device 130, etc. The SL-PRS configuration information may include one or more parameters related to the SL communications and/or the SL-based positioning determination between the anchor UE device 130 and the target UE device 120, such as SL-positioning reference signal (PRS) resource parameters (e.g., the time-frequency information related to the SL-PRS resource), SL- PRS transmission instructions for the anchor UE device 130, SL-PRS reception instructions for the target UE device 120, and/or reporting instructions for the anchor UE device 130 and/or the target UE device 120, etc. For example, in operation S4010A, the SL-PRS configuration information may configure and/or instruct the anchor UE device 130 to transmit at least one SL PRS resource to the target UE device 120 at a desired and/or specified time, and may further configure and/or instruct the anchor UE device 130 to report to the LMF 101 at least one of an anchor UE ID associated with the anchor UE device 130, TX antenna ID(s) associated with the TX antenna(s) used to transmit the at least one SL-PRS resource, SL-PRS resource ID(s) associated with the transmitted SL-PRS resource, current location information of the anchor UE 130, etc. Additionally, in optional operation S4010B, the SL-PRS configuration information may configure and/or instruct the target UE 120 to take SP-RSTD measurement(s) of at least one SL-PRS resource at a desired time (e.g., a desired time stamp, etc.) using at least two RX antennas, and report the SP-RSTD measurements to the LMF 101. Assuming that the target UE device 120 uses two RX antennas to measure a single SL-PRS resource transmitted by a single anchor UE device 130, the target UE 120 may measure the SP- RSTD of the indicated SL-PRS resource using the following equations: ^^^1⁽^ = ^_^, ^^1⁾ = ^_^ + ^_{^^^^^^_^^} + ^_^^ [Equation 1] ^^^2⁽^ = ^_^, ^^2⁾ = ^_^ + ^_{^^^^^^_^^} + ^_^^ [Equation 2] SP-RSTDSL-PRS = ^^^1 − ^^^2 [Equation 3] Wherein ToA1 represents the TOA of the SL-PRS resource measured using the first RX antenna (^^1); ToA2 represents the TOA of the SL-PRS resource measured using the second RX antenna (^^2); ^_^ = the time when the SL-PRS resource was transmitted by the anchor UE 120; ^_^ = the time that the SL-PRS resource is received by the first RX antenna; and ^_^= the time that the SL-PRS resource is received by the second RX antenna. Additionally, ^_{^^^^^^_^^} refers to the transmission time offset such as a group delay, etc., of the anchor UE device. In the case where a single anchor UE device is used to transmit the SL- PRS resource, the ^_{^^^^^^_^^} values of Equation 1 and Equation 2 will be the same (e.g., 0). In the case where a plurality of anchor UE devices transmit a plurality of SL-PRS resources (e.g., as shown in the system of FIG. 1C), the ^_{^^^^^^_^^} value of Equation 2 in relation to Equation 1 will be non-zero. Further, ^_^^ represents the time offset of the clock signal used with, connected to, and/or is associated with the respective RX antenna. In this example, the first RX antenna and the second RX antenna are associated with and/or connected to a common clock signal and/or the same clock signal (e.g., when the first RX antenna and the second RX antenna are included in the same UE device, etc.), then the time offset of the first RX antenna and the second RX antenna are the same, so the ^_^^ may be removed in the SP-RSTD calculation. However, if the first RX antenna and the second RX antenna are not associated with a common clock signal and/or the same clock signal (e.g., when the first RX antenna is included in a first target UE device and the second RX antenna is included in a second target UE device), then the time offset of the first RX antenna and the second RX antenna will be different, so the impact of the ^_^^ offset is not cancelled and is included in SP-RSTD measurement. In optional operation S4010C, which corresponds to the single target UE/multiple anchor UE system illustrated in FIG. 1C, the SL-PRS configuration information may configure and/or instruct the target UE 120 to take RSTD measurements of at least two SL-PRS resources transmitted by at least a first and second anchor UE 130 and 131 at desired times (e.g., desired time stamps, etc.) using at least two RX antennas using equations 1 to 3 above, and report the differential RSTD measurement to the LMF 101. In other words, the target UE 120 will take a first RSTD measurement (e.g., ^^^^^^1) of a first SL-PRS resource transmitted by the first anchor UE 130 and a second SL-PRS resource transmitted by the second anchor UE 131 using the first RX antenna, take a second RSTD measurement (e.g., ^^^^_^^^) of the first SL-PRS resource and the second SL-PRS resource using the second RX antenna, and calculate the differential RSTD measurement of the first SL-PRS resource and the second SL-PRS resource by calculating a difference between the first RSTD measurement and the second RSTD measurement. In optional operation S4010D, the target UE device 120 may be further configured and/or instructed to report a time offset between the clock signal(s) associated with the RX antennas, relative location information of the RX antennas, etc. Additionally, the target UE device 120 may be configured and/or instructed to perform the SL measurements based on one or more trigger conditions. For example, a trigger condition may be that the two or more RX antennas of the target UE device be within line of sight of the at least one TX antenna of the one or more anchor UE devices, but the example embodiments are not limited thereto. In operation S4020, the anchor UE 130 may transmit the SL-PRS resource using at least one TX antenna to the target UE 120 based on the SL-PRS configuration. In operation S4030, the target UE 120 may measure the timing of the received SL-PRS(s) based on the SL-PRS configuration, as discussed in connection with operations S4010B and S4010C. In operation S4040, the target UE 120 may report the timing measurement information determined in operation S4030 to the LMF 101. For example, as shown in operation S4040A, the target UE 120 may report the SP-RSTD measurement of the SL-PRS resource, or as shown in operation S4040B, the target UE 120 may report the differential RSTD measurements of the SL-PRS resources, etc. In operation S4040C, the target UE 120 may also report the relative RX antenna locations, the clock signal offset of the RX antennas, information indicating whether the RX antennas were within line of sight of the TX antenna(s), etc., but the example embodiments are not limited thereto. According to some example embodiments, the target UE 120 may transmit the timing measurement information to the LMF 101 in response to and/or based on the target UE 120 determining that the RX antennas are within line of sight of the TX antenna(s), but the example embodiments are not limited thereto. Further, in operation S4050, the anchor UE 130 may transmit a report to the LMF 101 based on the SL-PRS configuration information. For example, the anchor UE 130 report may include at least one of: anchor UE ID associated with the anchor UE device 130, TX antenna ID(s) associated with the TX antenna(s) used to transmit the at least one SL PRS resource, PRS resource ID(s) associated with the transmitted PRS resource, current location information of the anchor UE 130, etc., but is not limited thereto. In operation S4060, the LMF 101 may estimate the location of the target UE 120 based on the timing measurement information received from the target UE 120 (e.g., the SP-RSTD measurements, the differential RSTD measurements, etc.) and the report of the anchor UE 130, etc. For example, if the target UE device 120 reported the RSTD of the indicated SL-PRS resource, the LMF 101 may use the following equations to estimate and/or determine the location of the target UE device: ^ ^^^^ = ^ ^(^(^ − ^_^)^{^} + (^ − ^_^)^{^} ) − (^(^ − ^ − ^_^)^{^} + (^ − ^ − ^_^)^{^}^ ) [Equation 4] Wherein, c = the speed of light; ^_^ and ^_^ = the coordinates of the transmission antenna of the anchor UE device; ^ and ^ are the relative coordinates (e.g., the offset coordinates) of the second RX antenna of the target UE device; x and y are the unknown coordinates of the first RX antenna of the target UE device. Because the LMF 101 has received the RSTD value (e.g., the SP-RSTD value reported by the target UE device 120), the location of the anchor device 130, and the relative location of the second RX antenna of the target UE device 120, the LMF 101 may estimate and/or determine the location and/or position of the target UE device 120 using Equation 4, wherein the SP- RSTD measurement is input as the RSTD value of the equation and performing a Least Square (LS) estimation based on Taylor series expansion, but the example embodiments are not limited thereto. Moreover, as another example, if the target UE device 120 reported the differential RSTD measurement of at least two indicated SL-PRS resources transmitted by at least two anchor UE devices, the LMF 101 may use the following equations to estimate and/or determine the location of the target UE device: ^ ^^^^_^^^ = ^ ^_^(^ − ^_^)^{^} + (^ − ^_^)^{^} − _^(^ − ^_^)^{^} + (^ − ^_^)^{^}^+ ^_^^^^ [Equation 5]

+^_^^^^ [Equation 6] Wherein, ^_^ and ^_^ = the coordinates of the transmitter antenna of the first anchor UE device 130; ^_^ and ^_^ = the coordinates of the transmitter antenna of the second anchor UE device 131; and ^_^^^^ = the time offset between the first anchor UE 130 and the second anchor UE 131 (e.g., a synchronization time error between the first and the second anchor UE). Similar to the estimation and/or determination of the location of the target UE device 120 using the SP-RSTD measurement, the LMF 101 may estimate and/or determine the location of the target UE device 120 using Equations 5 and 6, wherein the first and second RSTD measurements are input as the values for ^^^^_^^^ and ^^^^_^^^, respectively, but the example embodiments are not limited thereto. This written description uses examples of the subject matter disclosed to enable any person skilled in the art to practice the same, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the subject matter is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims. Glossary of Acronyms TDOA Time Difference of Arrival eNB 4G/LTE Base Station gNB 5G Base Station TDOA Time Difference of Arrival LMF Location Management Function NR New Radio (5G) DL Downlink UL Uplink PRS Positioning Reference Signal RTT Round Trip Time RSTD Reference Signal Time difference SL Sidelink T-UE Target UE TOA Time of Arrival TRP Transmission Reception Point UE User Equipment RSRP Reference Signal Received Power RSRQ Reference Signal Received Quality SINR signal to interference and noise ratio LoS Line of Sight

Claims

CLAIMS: 1. A network device, comprising: a memory storing computer readable instructions; and processing circuitry configured to execute the computer readable instructions to cause the network device to, provide sidelink (SL) positioning configuration to at least one anchor user equipment (UE) device and at least one target UE device, wherein the SL positioning configuration relates to positioning based on two or more antennas with a known time offset, receive timing measurement information from the at least one target UE device, the timing measurement information based on a first timing measurement obtained from a first antenna and a second timing measurement obtained from a second antenna, and estimate a location of the at least one target UE device based on the timing measurement information. 2. The network device of claim 1, wherein the first antenna and the second antenna are associated with the at least one target UE device; and the first antenna and the second antenna are operated using a common clock signal. 3. The network device of any one of claims 1 to 2, wherein the first timing measurement is a first time of arrival measurement of at least one SL- positioning reference signal (PRS) resource obtained using the first antenna; the second timing measurement is a second time of arrival measurement of the at least one SL-PRS resource obtained using the second antenna; and the timing measurement information includes a difference in the first time of arrival measurement and the second time of arrival measurement. 4. The network device of any one of claims 1 to 3, wherein the timing measurement information includes at least one of: relative antenna location information based on a location of the first antenna and a location of the second antenna, a first antenna identifier (ID) associated with the first antenna, a second antenna ID associated with the second antenna, at least one SL-PRS resource ID associated with at least one received SL-PRS resource, or at least one anchor UE ID associated with the at least one anchor UE which transmitted the at least one SL- PRS resource. 5. The network device of any one of claims 1 to 4, wherein the at least one target UE device includes a first target UE device and a second target UE device, the first antenna associated with the first target UE device, and the second antenna associated with the second target UE device. 6. The network device of any one of claims 1 to 5, wherein the timing measurement information includes at least one of: a difference in time of arrival measured by the first antenna and the second antenna, relative antenna location information based on a location of the first antenna and a location of the second antenna, a time offset between a first clock signal and a second clock signal, a first antenna identifier (ID) associated with the first antenna, a second antenna ID associated with the second antenna, at least one SL-PRS resource ID associated with at least one received SL-PRS resource, or at least one anchor UE ID associated with the at least one anchor UE which transmitted the at least one SL-PRS resource; and the first clock signal is associated with the first antenna, and the second clock signal is associated with the second antenna. 7. The network device of any one of claims 1 to 6, wherein, the SL positioning configuration configures the at least one anchor UE device to: transmit at least one SL-PRS resource to the at least one target UE device; and report at least one of: at least one anchor UE ID associated with the at least one anchor UE device, at least one antenna ID associated with at least one transmitter antenna used to transmit the at least one SL-PRS resource, at least one SL-PRS resource ID associated with the at least one transmitted SL-PRS resource, or location information corresponding to the at least one anchor UE device. 8. The network device of any one of claims 1 to 7, wherein the at least one anchor UE device includes a first anchor UE device and a second anchor UE device; the SL positioning configuration configures each of the first and second anchor UE devices to transmit first and second SL-PRS resources, respectively, to the at least one target UE device; the SL positioning configuration configures the at least one target UE device to, obtain a first reference signal timing difference (RSTD) measurement of the first SL-PRS resource and the second SL-PRS resource from the first antenna, obtain a second RSTD measurement of the first SL-PRS resource and the second SL-PRS resource from the second antenna, and transmit the timing measurement information, the timing measurement information including a difference of the first RSTD measurement and the second RSTD measurement; and the network device is further caused to: receive location information associated with the first anchor UE device and location information of the second anchor UE device; and estimate the location of the at least one target UE device based on the difference of the first RSTD measurement and the second RSTD measurement, the location information of the first anchor UE device, and the location information of the second anchor UE device. 9. The network device of any one of claims 1 to 8, wherein the SL positioning configuration configures the at least one target UE device to: determine whether the first antenna and the second antenna are in line of sight of at least one transmitter transmitting at least one SL-PRS resource from at least one anchor UE device; and transmit the timing measurement information to the network device in response to results of the determination indicating the first antenna and the second antenna are in line of sight of the at least one transmitter. 10. The network device of any one of claims 1 to 9, wherein the network device is at least one of: a location server, a UE device, or a location management function of a wireless network. 11. A user equipment (UE) device, comprising: a memory storing computer readable instructions; and processing circuitry configured to execute the computer readable instructions to cause the UE device to, receive sidelink (SL) positioning configuration from at least one network device, wherein the SL positioning configuration relates to positioning based on two or more antennas with a known time offset, and transmit timing measurement information to the at least one network device based on the SL positioning configuration, the timing measurement information based on a first timing measurement obtained from a first antenna and a second timing measurement obtained from a second antenna. 12. The UE device of claim 11, further comprising: the first antenna and the second antenna, wherein the first antenna and the second antenna are configured to operate using a common clock signal. 13. The UE device of any one of claims 11 to 12, wherein the UE device is further caused to: receive at least one SL-positioning reference signal (PRS) resource from at least one anchor UE device; obtain the first timing measurement by measuring a first time of arrival of the at least one SL-PRS resource using the first antenna; obtain the second timing measurement by measuring a second time of arrival of the at least one SL-PRS resource using the second antenna; determine a difference between the first timing measurement and the second timing measurement; and transmit the timing measurement information, the timing measurement information including the determined difference. 14. The UE device of any one of claims 11 to 13, wherein the UE device is further caused to: determine whether the first antenna and the second antenna are in line of sight of at least one transmitter transmitting the at least one SL-PRS resource from the at least one anchor UE device; and transmit the timing measurement information to the at least one network device in response to results of the determination indicating the first antenna and the second antenna are in line of sight of the at least one transmitter. 15. The UE device of any one of claims 11 to 14, wherein the timing measurement information includes at least one of: a difference in time of arrival measured by the first antenna and the second antenna, relative antenna location information based on a location of the first antenna and a location of the second antenna, a time offset between a first clock signal and a second clock signal, the first clock signal associated with the first antenna, and the second clock signal associated with the second antenna, a first antenna identifier (ID) associated with the first antenna, a second antenna ID associated with the second antenna, at least one SL-PRS resource ID associated with at least one received SL-PRS resource, or at least one anchor UE ID associated with the at least one anchor UE which transmitted the at least one SL- PRS resource. 16. The UE device of any one of claims 11 to 15, wherein the UE device is further caused to, receive a first SL-PRS resource and a second SL-PRS resource from a first anchor UE device and a second anchor UE device, respectively; obtain a first reference signal timing difference (RSTD) measurement of the first SL-PRS resource and the second SL-PRS resource using the first antenna; obtain a second RSTD measurement of the first SL-PRS resource and the second SL-PRS resource using the second antenna; and transmit the timing measurement information to the at least one network device, the timing measurement information including a difference of the first RSTD measurement and the second RSTD measurement. 17. A method of operating a network device, comprising: providing sidelink (SL) positioning configuration to at least one anchor UE device and at least one target user equipment (UE) device, wherein the SL positioning configuration relates to positioning based on two or more antennas with a known time offset; receiving timing measurement information from the at least one target UE device, the timing measurement information based on a first timing measurement obtained from a first antenna and a second timing measurement obtained from a second antenna; and estimating a location of the at least one target UE device based on the timing measurement information. 18. The method of claim 17, wherein the first antenna and the second antenna are associated with the at least one target UE device; the first antenna and the second antenna are operated using a common clock signal; the first timing measurement is a first time of arrival measurement of at least one SL-positioning reference signal (PRS) resource obtained using the first antenna; the second timing measurement is a second time of arrival measurement of the at least one SL-PRS resource obtained using the second antenna; and the timing measurement information includes at least one of, a difference in the first time of arrival measurement and the second time of arrival measurement, relative antenna location information based on a location of the first antenna and a location of the second antenna, a first antenna identifier (ID) associated with the first antenna, a second antenna ID associated with the second antenna, at least one SL-PRS resource ID associated with at least one received SL-PRS resource, or at least one anchor UE ID associated with the at least one anchor UE which transmitted the at least one SL- PRS resource. 19. The method of any one of claims 17 to 18, wherein the at least one target UE device includes a first target UE device and a second target UE device, the first antenna associated with the first target UE device, and the second antenna associated with the second target UE device; and the timing measurement information includes at least one of: a difference in time of arrival measured by the first antenna and the second antenna, relative antenna location information based on a location of the first antenna and a location of the second antenna, a time offset between a first clock signal and a second clock signal, a first antenna identifier (ID) associated with the first antenna, a second antenna ID associated with the second antenna, at least one SL-PRS resource ID associated with at least one received SL-PRS resource, or at least one anchor UE ID associated with the at least one anchor UE which transmitted the at least one SL-PRS resource, and the first clock signal is associated with the first antenna, and the second clock signal is associated with the second antenna. 20. The method of any one of claims 17 to 19, wherein, in response to the SL positioning configuration, the at least one anchor UE device is configured to: transmit at least one SL-PRS resource to the at least one target UE device; and report at least one of: at least one anchor UE ID associated with the at least one anchor UE device, at least one antenna ID associated with at least one transmitter antenna used to transmit the at least one SL-PRS resource, at least one SL-PRS resource ID associated with the at least one transmitted SL-PRS resource, or location information corresponding to the at least one anchor UE device. 21. The method of any one of claims 17 to 20, wherein the at least one anchor UE device includes a first anchor UE device and a second anchor UE device; in response to the SL positioning configuration, each of the first and second anchor UE devices are configured to transmit first and second SL-PRS resources, respectively, to the at least one target UE device; in response to the SL positioning configuration, the at least one target UE device is configured to, obtain a first reference signal timing difference (RSTD) measurement of the first SL-PRS resource and the second SL-PRS resource from the first antenna, obtain a second RSTD measurement of the first SL-PRS resource and the second SL-PRS resource from the second antenna, and transmit the timing measurement information, the timing measurement information including a difference of the first RSTD measurement and the second RSTD measurement; and the method further includes, receiving location information associated with the first anchor UE device and location information of the second anchor UE device; and estimating the location of the at least one target UE device based on the difference of the first RSTD measurement and the second RSTD measurement, the location information of the first anchor UE device, and the location information of the second anchor UE device. 22. A method of operating a user equipment (UE) device, comprising: receiving sidelink (SL) positioning configuration from at least one network device, wherein the SL positioning configuration relates to positioning based on two or more antennas with a known time offset; and transmitting timing measurement information to the at least one network device based on the SL positioning configuration, the timing measurement information based on a first timing measurement obtained from a first antenna and a second timing measurement obtained from a second antenna. 23. The method of claim 22, wherein the UE device includes the first antenna and the second antenna; and the method further includes: operating the first antenna and the second antenna using a common clock signal. 24. The method of any one of claims 22 to 23, further comprising: receiving at least one SL-positioning reference signal (PRS) resource from at least one anchor UE device; obtaining the first timing measurement by measuring a first time of arrival of the at least one SL-PRS resource using the first antenna; obtaining the second timing measurement by measuring a second time of arrival of the at least one SL-PRS resource using the second antenna; determining a difference between the first timing measurement and the second timing measurement; and transmitting the timing measurement information, the timing measurement information including the determined difference. 25. The method of any one of claims 22 to 24, further comprising: determining whether the first antenna and the second antenna are in line of sight of at least one transmitter transmitting the at least one SL-PRS resource from the at least one anchor UE device; and transmitting the timing measurement information to the at least one network device in response to results of the determining indicating the first antenna and the second antenna are in line of sight of the at least one transmitter. 26. The method of any one of claims 22 to 25, wherein the timing measurement information includes at least one of: a difference in time of arrival measured by the first antenna and the second antenna, relative antenna location information based on a location of the first antenna and a location of the second antenna, a time offset between a first clock signal and a second clock signal, the first clock signal associated with the first antenna, and the second clock signal associated with the second antenna, a first antenna identifier (ID) associated with the first antenna, a second antenna ID associated with the second antenna, at least one SL-PRS resource ID associated with at least one received SL-PRS resource, or at least one anchor UE ID associated with the at least one anchor UE which transmitted the at least one SL- PRS resource. 27. The method of any one of claims 22 to 26, further comprising: receiving a first SL-PRS resource and a second SL-PRS resource from a first anchor UE device and a second anchor UE device, respectively; obtaining a first reference signal timing difference (RSTD) measurement of the first SL-PRS resource and the second SL-PRS resource using the first antenna; obtaining a second RSTD measurement of the first SL-PRS resource and the second SL-PRS resource using the second antenna; and transmitting the timing measurement information to the at least one network device, the timing measurement information including a difference of the first RSTD measurement and the second RSTD measurement.