Two-way positioning reference signal measurement exchange in mmwave-based round trip time positioning

Abstract

Methods, systems, and devices for wireless communication are described. A device can receive, from another device, a directional positioning reference signal over one or more beams. The device can transmit, in response to the reception of the directional positioning reference signal, a broadcast positioning reference signal. The device can receive, from the other device, a report including a timing and a directionality associated with the transmission of the directional positioning reference signal. The report can also include a timing and a directionality associated with the reception of the broadcast positioning reference signal at the other device. In response to the reception of the report, the device can transmit, to the other device, beam-specific measurement information associated with the one or more beams. The device can communicate with the other device using a beam of the one or more beams based at least on the report and the beam-specific measurement information.

Description

[0001] Cross-references

[0002] This patent application claims the benefits of U.S. Provisional Patent Application No. 63 / 071,869, filed August 28, 2020, entitled “BIDIRECTIONAL POSITIONING REFERENCE SIGNAL MEASUREMENT EXCHANGE IN MILLIMETER WAVE-BASED ROUND TRIP TIME POSITIONING”, and U.S. Patent Application No. 17 / 446,126, filed August 26, 2021, entitled “BIDIRECTIONAL POSITIONING REFERENCE SIGNAL MEASUREMENT EXCHANGE IN MILLIMETER WAVE-BASED ROUND TRIP TIME POSITIONING”, each of which has been assigned to its assignee. Technical Field

[0003] The following discussion relates to wireless communication, including bidirectional positioning reference signal (PRS) measurement exchange in millimeter-wave (mmW) round-trip time (RTT) positioning. Background Technology

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, and broadcasting. These systems are capable of supporting communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth-generation (4G) systems such as Long Term Evolution (LTE), LTE-A Advanced (LTE-A), or LTE-A Pro systems, and fifth-generation (5G) systems, which may be referred to as New Radio (NR) systems. These systems can employ technologies such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), or Discrete Fourier Transform Extended Orthogonal Frequency Division Multiple Access (DFT-S-OFDM).

[0005] A wireless multiple access communication system may include one or more base stations or one or more network access nodes, each of which supports communication from multiple communication devices simultaneously, which may also be referred to as user equipment (UE). In some cases, a multiple access communication system may include non-anchored devices (e.g., UEs that cannot accurately determine their location) and anchored devices (e.g., UEs that can accurately determine their location, such as roadside units (RSUs)). Summary of the Invention

[0006] The described technology relates to improved methods, systems, devices, and apparatuses for supporting bidirectional positioning reference signal measurement exchange in millimeter-wave (mmW) round-trip time (RTT) positioning. Typically, the described technology provides reporting of beam-specific measurement information from a non-anchored device to an anchored device (or another non-anchored device) regarding the transmission of directional positioning reference signals from the anchored device to the non-anchored device.

[0007] A method for wireless communication at a first wireless device is described. The method may include: receiving a directional positioning reference signal via one or more beams in a beamset; transmitting a broadcast positioning reference signal in response to the reception of the directional positioning reference signal; receiving from a second wireless device a report including timing and directionality associated with the transmission of the directional positioning reference signal and the reception of the broadcast positioning reference signal at the second wireless device; transmitting beam-specific measurement information associated with one or more beams in the beamset to the second wireless device in response to the reception of the report; and communicating with the second wireless device using one or more beams based on the report and the beam-specific measurement information.

[0008] An apparatus for wireless communication at a first wireless device is described. The apparatus may include one or more transceivers, one or more memories, and one or more processors electrically coupled to the one or more memories and the one or more transceivers. The one or more processors may be configured to: receive a directional positioning reference signal via one or more beams in a beamset via the one or more transceivers; transmit a broadcast positioning reference signal via the one or more transceivers in response to the reception of the directional positioning reference signal; receive, via the one or more transceivers, a report from a second wireless device including timing and directionality associated with the transmission of the directional positioning reference signal and the reception of the broadcast positioning reference signal at the second wireless device; transmit beam-specific measurement information associated with the one or more beams in the beamset to the second wireless device via the one or more transceivers in response to the reception of the report; and communicate with the second wireless device using a beam from the one or more beams based on the report and the beam-specific measurement information.

[0009] Another apparatus for wireless communication at a first wireless device is described. The apparatus may include: means for receiving a directional positioning reference signal via one or more beams in a beamset; means for transmitting a broadcast positioning reference signal in response to the reception of the directional positioning reference signal; means for receiving from a second wireless device a report including timing and directionality associated with the transmission of the directional positioning reference signal and the reception of the broadcast positioning reference signal at the second wireless device; means for transmitting beam-specific measurement information associated with one or more beams in the beamset to the second wireless device in response to the reception of the report; and means for communicating with the second wireless device using one or more beams based on the report and the beam-specific measurement information.

[0010] A non-transitory computer-readable medium is described, storing code for wireless communication at a first wireless device. The code may include instructions executable by a processor to: receive a directional positioning reference signal via one or more beams in a beamset; transmit a broadcast positioning reference signal in response to the reception of the directional positioning reference signal; receive from a second wireless device a report including timing and directionality associated with the transmission of the directional positioning reference signal and the reception of the broadcast positioning reference signal at the second wireless device; transmit beam-specific measurement information associated with one or more beams in the beamset to the second wireless device in response to the reception of the report; and communicate with the second wireless device using one or more beams based on the report and the beam-specific measurement information.

[0011] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining a reference signal received power value for each of the one or more beams based on the reception of a directional positioning reference signal through each of the one or more beams; and assigning a rank to each of the one or more beams based on the corresponding reference signal received power value determined for each of the one or more beams.

[0012] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for transmitting at least one of a reference signal received power value or an assigned level determined for at least one of one or more beams.

[0013] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for transmitting at least one of a time instance and a direction associated with the reception of a directional positioning reference signal via one or more beams.

[0014] Some examples of the methods, apparatuses, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for selecting a beam in one or more beams based on a reference signal received power value of one or more beams, and for transmitting at least one of a set of beam indices or beam patterns associated with each of the one or more beams.

[0015] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving indications of one or more beams based on transmitted beam-specific measurement information.

[0016] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving at least one of a time instance or direction associated with the transmission of a directional positioning reference signal by a second wireless device via one or more beams, and for receiving at least one of a time instance or direction associated with the reception of a broadcast positioning reference signal at the second wireless device.

[0017] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first wireless device includes a non-anchor device in an RTT positioning scheme, and the second wireless device includes an anchor device in an RTT positioning scheme.

[0018] In some examples of the methods, apparatuses and non-transitory computer-readable media described herein, the first wireless device includes a non-anchored device in an RTT positioning scheme, and the second wireless device includes another non-anchored device in an RTT positioning scheme.

[0019] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the second wireless device includes a roadside unit (RSU) in an RTT positioning scheme.

[0020] A method for wireless communication at a second wireless device is described. The method may include: transmitting a directional positioning reference signal via a beamset; receiving a broadcast positioning reference signal from the first wireless device in response to reception of the directional positioning reference signal via one or more beams in the beamset; transmitting to the first wireless device a report including timing and directionality associated with the transmission of the directional positioning reference signal and the reception of the broadcast positioning reference signal at the second wireless device; receiving beam-specific measurement information associated with one or more beams in the beamset in response to reception of the report at the first wireless device; and communicating with the first wireless device using one or more beams based on the report and the beam-specific measurement information.

[0021] An apparatus for wireless communication at a second wireless device is described. The apparatus may include one or more transceivers, one or more memories, and one or more processors electrically coupled to the one or more memories and the one or more transceivers. The one or more processors may be configured to: transmit a directional positioning reference signal via a beamset through the one or more transceivers; receive a broadcast positioning reference signal from the first wireless device via the one or more transceivers in response to reception of the directional positioning reference signal at the first wireless device via one or more beams in the beamset; transmit to the first wireless device via the one or more transceivers a report including timing and directionality associated with the transmission of the directional positioning reference signal and the reception of the broadcast positioning reference signal at the second wireless device; receive beam-specific measurement information associated with one or more beams in the beamset from the first wireless device via the one or more transceivers in response to reception of the report at the first wireless device; and communicate with the first wireless device using a beam from the one or more beams based on the report and the beam-specific measurement information.

[0022] Another method for wireless communication at a second wireless device is described. The apparatus may include: means for transmitting a directional positioning reference signal via a beam set; means for receiving a broadcast positioning reference signal from a first wireless device in response to reception of the directional positioning reference signal at a first wireless device via one or more beams in the beam set; means for transmitting to the first wireless device a report including timing and directionality associated with the transmission of the directional positioning reference signal and the reception of the broadcast positioning reference signal at the second wireless device; means for receiving beam-specific measurement information associated with one or more beams in the beam set from the first wireless device in response to reception of the report at the first wireless device; and means for communicating with the first wireless device using one or more beams based on the report and the beam-specific measurement information.

[0023] A non-transitory computer-readable medium is described, storing code for wireless communication at a second wireless device. The code may include instructions executable by a processor to: transmit a directional positioning reference signal via a beamset; receive a broadcast positioning reference signal from the first wireless device in response to reception of the directional positioning reference signal via one or more beams in the beamset; transmit to the first wireless device a report including timing and directionality associated with the transmission of the directional positioning reference signal and the reception of the broadcast positioning reference signal at the second wireless device; receive beam-specific measurement information associated with one or more beams in the beamset from the first wireless device in response to reception of the report; and communicate with the first wireless device using one or more beams based on the report and the beam-specific measurement information.

[0024] In some examples of the methods, apparatuses, and nontransitory computer-readable media described herein, the methods, apparatuses, and nontransitory computer-readable media may also include operations, features, components, or instructions for a reference signal received power value for each of one or more beams associated with a directional positioning reference signal and a class associated with at least the reference signal received power value for each of the one or more beams.

[0025] In some examples of the methods, apparatuses and non-transitory computer-readable media described herein, beam-specific measurement information also includes at least one of a time instance or direction associated with a directional positioning reference signal received by the first wireless device via one or more beams.

[0026] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include methods for receiving at least one of a set of beam indices or beam patterns associated with each of one or more beams.

[0027] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for transmitting instructions on one or more beams based on received beam-specific measurement information.

[0028] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for transmitting at least one of a time instance or direction associated with transmitting a directional positioning reference signal via one or more beams, and for transmitting at least one of a time instance or direction associated with receiving a broadcast positioning reference signal at a second wireless device.

[0029] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first wireless device includes a non-anchor device in an RTT positioning scheme, and the second wireless device includes an anchor device in an RTT positioning scheme.

[0030] In some examples of the methods, apparatuses and non-transitory computer-readable media described herein, the first wireless device includes a non-anchored device in an RTT positioning scheme, and the second wireless device includes another non-anchored device in an RTT positioning scheme.

[0031] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the second wireless device includes an RSU in an RTT positioning scheme. Attached Figure Description

[0032] Figure 1The illustration depicts a system for wireless communication that supports bidirectional positioning reference signal measurement exchange in millimeter-wave (mmW) round-trip time (RTT) positioning, according to various aspects of this disclosure.

[0033] Figure 2A and Figure 2B Examples of group listen-before-speak (LBT) processes in some systems according to various aspects of this disclosure are illustrated.

[0034] Figure 3A and Figure 3B The illustrations depict example wireless communication systems and signaling timelines described in reference to various aspects of this disclosure, using RTT-based sidelink localization in some systems.

[0035] Figure 4 The illustration shows an example of the process flow for RTT-based sidelink localization in some systems, in accordance with various aspects of this disclosure.

[0036] Figure 5 An example of the process flow for bidirectional positioning reference signal measurement exchange in mmW-based RTT positioning, according to various aspects of this disclosure, is illustrated.

[0037] Figure 6 and Figure 7 A block diagram of an apparatus for bidirectional positioning reference signal measurement exchange in mmW-based RTT positioning, according to various aspects of this disclosure, is shown.

[0038] Figure 8 A block diagram of a communication manager supporting bidirectional positioning reference signal measurement exchange in mmW-based RTT positioning is shown according to various aspects of this disclosure.

[0039] Figure 9 A block diagram of a system including a device supporting bidirectional positioning reference signal measurement exchange in mmW-based RTT positioning is shown according to various aspects of this disclosure.

[0040] Figures 10 to 13 A flowchart is shown, illustrating a method for bidirectional positioning reference signal measurement exchange in mmW-based RTT positioning according to various aspects of this disclosure. Detailed Implementation

[0041] Devices in a wireless communication system can employ distributed communication, such as peer-to-peer communication. Examples of peer-to-peer communication can include device-to-device (D2D) communication, such as sidelink communication. Devices in a D2D communication system can benefit from knowing the corresponding location or position of devices within the system. For this purpose, a D2D communication system can include anchored devices and non-anchored devices. Examples of anchored devices include wireless devices capable of accurately determining their location (at least within a threshold distance or accuracy). Examples of non-anchored devices include devices that cannot accurately determine their location (at least within a threshold distance or accuracy). As described herein, non-anchored devices can use sidelink positioning techniques (e.g., round-trip time (RTT) based methods) to estimate their location. In some cases, non-anchored devices can estimate their location based on positioning reference signals broadcast by anchored devices.

[0042] To determine relative or absolute position, in at least some cases, both the anchor device and the non-anchor device can each broadcast a corresponding positioning reference signal. For example, the anchor device can transmit a positioning reference signal (e.g., a directional positioning reference signal) via one or more beams. The non-anchor device can receive the directional positioning reference signal via at least one of the one or more beams. Furthermore, the non-anchor device can transmit a positioning reference signal (e.g., broadcast a positioning reference signal) that can be received at the anchor device.

[0043] In the example, after the anchor device has sent its positioning reference signal and after the non-anchor device has sent its positioning reference signal, the non-anchor device can receive Intelligent Transportation System (ITS) messages from the anchor device. The non-anchor device can receive ITS messages from the anchor device that indicate timing information for one or both of the positioning reference signals sent by the non-anchor device and those sent by the anchor device. By using the information included in the ITS message, the non-anchor device can estimate its own position and clock errors.

[0044] However, in millimeter-wave (mmW) communication, the penetration or coverage of the transmitted positioning reference signal can be limited due to narrow beamwidth and interfering objects. In some cases, when the positioning reference signal is broadcast directionally through different beams (e.g., using beam patterns available to the transmitting device), the positioning reference signal may be affected differently due to variations in channel implementations associated with the beams (e.g., channel quality, channel occupancy). Therefore, mmW-based positioning can be unreliable and also introduces latency.

[0045] The challenges of mmW communication are largely addressed by focusing on more directional or focused beam transmission. As described herein, not only anchor devices (e.g., roadside units (RSUs)) can use directional communication to transmit their positioning reference signals, but non-anchor devices can also measure and notify the anchor device of the directional beams most readily received by that non-anchor device. Thus, for example, a non-anchor device can receive a directional positioning reference signal via one or more beams. In response to the reception of the directional positioning reference signal (e.g., from the anchor device or another non-anchor device), the non-anchor device can transmit a broadcast positioning reference signal. The non-anchor device can receive from the anchor device (or other non-anchor device) a report including timing and directionality associated with the transmission of the directional positioning reference signal. This report may also include timing and directionality associated with the reception of the broadcast positioning reference signal at the anchor device. In response to the reception of the report, the non-anchor device can send to the anchor device beam-specific measurement information associated with one or more beams (e.g., Reference Signal Received Power (RSRP) value, beam class based on the RSRP value). Non-anchored devices can communicate with anchored devices using one or more beams, based at least on reports and beam-specific measurement information.

[0046] One or more advantages can be achieved by implementing various aspects of the subject matter described herein. The described techniques can support improvements in spectral efficiency and reliability, and also bring other advantages. In some aspects, receiving reports of timing and directionality associated with the transmission of the directional positioning reference signal, and communicating with another device using a beam selected based on specific measurement information of the corresponding beam, can provide successful broadcasting of the positioning reference signal (e.g., directional), which can avoid potential transmission congestion and subsequent retransmissions. Such techniques can improve spectral utilization, increase spectral efficiency, and enhance reliability.

[0047] The aspects of this disclosure are initially described in the context of wireless communication systems. Examples of processes and signaling exchanges supporting the reporting of beam-specific measurement information from a non-anchor device to an anchor device (or another non-anchor device) with respect to the transmission of directional positioning reference signals from the anchor device to the non-anchor device are described. The aspects of this disclosure are further illustrated and described in conjunction with apparatus diagrams, system diagrams, and flowcharts relating to bidirectional positioning reference signal measurement exchanges in mmW-based RTT positioning.

[0048] Figure 1An example of a wireless communication system 100 supporting bidirectional positioning reference signal measurement exchange in mmW-based RTT positioning is illustrated according to various aspects of this disclosure. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an LTE-A Advanced (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some examples, the wireless communication system 100 may support enhanced broadband communication, ultra-reliable (e.g., mission-critical) communication, low-latency communication, communication with low-cost and low-complexity devices, or any combination thereof.

[0049] Base station 105 can be distributed throughout a geographical area to form wireless communication system 100, and can be devices of different forms or with different capabilities. Base station 105 and UE 115 can communicate wirelessly via one or more communication links 125. Each base station 105 can provide a coverage area 110, and UE 115 and base station 105 can establish one or more communication links 125 on the coverage area. Coverage area 110 can be an example of a geographical area on which base station 105 and UE 115 can support signal communication according to one or more radio access technologies.

[0050] UE 115 can be distributed throughout the entire coverage area 110 of the wireless communication system 100, and each UE 115 can be fixed or mobile, or fixed or mobile at different times. UE 115 can be devices of different forms or with different capabilities. Figure 1 Some example UE 115s are shown in the document. The UE 115 described herein may be able to communicate with various types of devices, such as other UE 115s, base station 105, or network devices (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network devices), such as... Figure 1 As shown.

[0051] Base station 105 can communicate with core network 130, communicate with each other, or both. For example, base station 105 can interface with core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). Base station 105 can communicate with each other directly (e.g., directly between base stations 105) or indirectly (e.g., via core network 130) or both via backhaul links 120 (e.g., via X2, Xn, or other interfaces). In some examples, backhaul link 120 can be or includes one or more radio links.

[0052] One or more of the base stations 105 described herein may include, or may be referred to by those skilled in the art as, base station transceiver, radio base station, access point, radio transceiver, NodeB, eNodeB (eNB), next-generation NodeB or giga-NodeB (any of which may be referred to as gNB), home NodeB, home eNodeB or other suitable terms.

[0053] In other examples, UE 115 may include or be referred to as a mobile device, wireless device, remote device, handheld device, or subscriber device, or some other suitable term, wherein "device" may also be referred to as a unit, station, terminal, or client. UE 115 may also include or be referred to as a personal electronic device such as a cellular phone, personal digital assistant (PDA), tablet computer, laptop computer, or personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, IoT device, Internet of Things (IoE) device, or machine-type communication (MTC) device, among other examples, which can be implemented in a variety of objects, such as appliances, vehicles, meters, and other examples. In some examples, UE 115 may include or be referred to as a non-anchored device (e.g., a UE that cannot accurately determine its location (within a threshold)) or an anchored device (e.g., a UE that can accurately determine its location (within a threshold)).

[0054] The UE 115 described in this document may be able to communicate with various types of devices, such as other UEs 115 that may sometimes act as relays, as well as base station 105 and network devices including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, etc. Figure 1 As shown.

[0055] UE 115 and base station 105 can wirelessly communicate with each other via one or more communication links 125 on one or more carriers. The term "carrier" can refer to a set of radio spectrum resources having a defined physical layer structure for supporting communication link 125. For example, a carrier for communication link 125 may include a portion (e.g., a bandwidth portion (BWP)) of a radio spectrum band that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling coordinating operations for carriers, user data, or other signaling. Wireless communication system 100 can support communication with UE 115 using carrier aggregation or multi-carrier operation. UE 115 can be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation can be used with both frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0056] The signal waveform transmitted via a carrier can consist of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform extended OFDM (DFT-S-OFDM)). In a system employing MCM, a resource element can include a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, where the symbol period and subcarrier spacing are inversely related. The number of bits carried by each resource element can depend on the modulation scheme (e.g., the order of the modulation scheme, the decoding rate of the modulation scheme, or both). Therefore, the more resource elements the UE 115 receives and the higher the order of the modulation scheme, the higher the data rate the UE 115 can potentially achieve. Wireless communication resources can refer to a combination of radio spectrum resources, temporal resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers can further improve the data rate or data integrity for communication with the UE 115.

[0057] The time interval of base station 105 or UE 115 can be expressed as a multiple of a basic time unit, for example, the basic time unit can refer to T. s =1 / (Δf) max ·N f The sampling period is ) seconds, where Δf max This can represent the maximum supported subcarrier spacing, and N f This can represent the maximum supported Discrete Fourier Transform (DFT) size. Communication resources can be organized into time intervals based on radio frames, each with a specified duration (e.g., 10 milliseconds (ms)). Each radio frame can be identified by its System Frame Number (SFN) (e.g., ranging from 0 to 1023).

[0058] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into multiple subframes, and each subframe may be further divided into multiple time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include multiple periods (e.g., depending on the length of the cyclic prefix preceding each symbol period). In some wireless communication systems 100, time slots may be further divided into multiple micro-time slots containing one or more symbols. In addition to the cyclic prefix, each symbol period may contain one or more (e.g., N) f Sampling period. The duration of the symbol period can depend on the subcarrier spacing or the operating frequency band.

[0059] A subframe, time slot, mini-time slot, or may be the smallest scheduling unit of the wireless communication system 100 (e.g., in the time domain) and may be referred to as a transmission time interval (TTI). In some examples, the duration of the TTI (e.g., the number of symbol periods in the TTI) may be variable. Alternatively or additionally, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in a burst of shortened TTIs (sTTIs)).

[0060] Physical channels can be multiplexed on a carrier using various technologies. For example, physical control channels and physical data channels can be multiplexed on a downlink carrier by using one or more of TDM, FDM, or hybrid TDM-FDM technologies. A control region (e.g., a control resource set (CORESET)) for physical control channels can be defined by the number of symbol periods and can extend over the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) can be configured for a set of UEs 115. For example, one or more UEs 115 can monitor or search for control regions for control information based on one or more search space sets, and each search space set can include one or more control channel candidates at one or more aggregation levels arranged in a cascaded manner. The aggregation level for control channel candidates can refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space set can include a common search space set configured to send control information to multiple UEs 115 and a UE-specific search space set for sending control information to a specific UE 115.

[0061] In some examples, base station 105 may be mobile, and thus provide communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. Wireless communication system 100 may include, for example, a heterogeneous network, in which different types of base stations 105 use the same or different radio access technologies to provide coverage for various geographic coverage areas 110.

[0062] Wireless communication system 100 can be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, wireless communication system 100 can be configured to support ultra-reliable low-latency communication (URLLC) or mission-critical communication. UE 115 can be designed to support ultra-reliable, low-latency, or mission-critical functions (e.g., mission-critical functions). Ultra-reliable communication can include private or group communication and can be supported by one or more mission-critical services (such as mission-critical key-push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData)). Support for mission-critical functions can include service prioritization, which can be used for public safety or general business applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency are used interchangeably herein.

[0063] In some examples, UE 115 is also able to communicate directly with other UE 115 via device-to-device (D2D) communication link 135 (e.g., using peer-to-peer (P2P) or D2D protocols). One or more UE 115s utilizing D2D communication can be within the geographic coverage area 110 of base station 105. Other UE 115s in this group may be outside the geographic coverage area 110 of base station 105 or may not be able to receive transmissions from base station 105 in other ways. In some examples, the group of UE 115s communicating via D2D communication can utilize a one-to-many (1:M) system, where each UE 115 transmits to every other UE 115 in the group. In some examples, base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between UE 115s without involving base station 105.

[0064] In some systems, the D2D communication link 135 may be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, vehicles may communicate using vehicle-to-everything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination of these communications. Vehicles may signal information related to traffic conditions, signal control, weather, safety, emergencies, or any other information related to the V2X system. In some examples, vehicles in a V2X system may communicate with roadside infrastructure (such as roadside units), or communicate with the network via vehicle-to-network (V2N) communication through one or more network nodes (e.g., base station 105), or both.

[0065] Core network 130 can provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. Core network 130 can be an evolved packet core (EPC) or a 5G core (5GC), and can include at least one control plane entity (e.g., a mobility management entity (MME), access and mobility management function (AMF)) managing access and mobility, and at least one user plane entity routing packets or interconnects to external networks (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)). The control plane entity can manage non-access stratum (NAS) functions associated with core network 130 for UE 115 served by base station 105, such as mobility, authentication, and bearer management. User IP packets can be delivered through the user plane entity, which can provide IP address allocation and other functions. The user plane entity can connect to network operator IP service 150. Network operator IP service 150 can include access to the Internet, intranets, IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0066] Some network devices, such as base station 105, may include sub-components such as access network entity 140, which may be an example of an access node controller (ANC). Each access network entity 140 may communicate with UE 115 through one or more other access network transmitting entities 145, which may be referred to as a radio head, smart radio head, or transmit / receive point (TRP). Each access network transmitting entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs) or combined into a single network device (e.g., base station 105).

[0067] Wireless communication system 100 can operate using one or more frequency bands, typically in the range of 300 MHz to 300 GHz. The 300 MHz to 3 GHz region is generally referred to as the UHF region or decimeter band because the wavelength range is approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features; however, the waves can be sufficient to penetrate structures, allowing macrocells to provide service to UE 115 located indoors. Compared to transmission using smaller frequencies and longer waves in the lower frequencies (HF) or very high frequencies (VHF) portions of the spectrum below 300 MHz, UHF wave transmission can be associated with smaller antennas and shorter distances (e.g., less than 100 km).

[0068] The wireless communication system 100 can also operate in the ultra-high frequency (SHF) region (also known as the centimeter band) using a frequency band from 3 GHz to 30 GHz, or in the extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz) (also known as the millimeter band). In some examples, the wireless communication system 100 may support millimeter-wave (mmW) communication between the UE 115 and the base station 105, and the EHF antennas of the corresponding devices may be smaller and more closely spaced than UHF antennas. In some examples, this may facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may suffer from even greater atmospheric attenuation and shorter range than SHF or UHF transmissions. The techniques disclosed herein can be employed across transmissions using one or more different frequency zonings, and the designated use of bands across these frequency regions may vary by country or regulatory authority.

[0069] The wireless communication system 100 can utilize both licensed and unlicensed radio spectrum bands. For example, the wireless communication system 100 can use Licensed Assisted Access (LAA), LTE Unlicensed (LTE-U) radio access technology, or NR technology in unlicensed bands such as the 5 GHz Industrial, Scientific, and Medical (ISM) band. When operating in unlicensed radio spectrum bands, devices such as base station 105 and UE 115 can employ carrier sensing for collision detection and avoidance. In some examples, operation in unlicensed bands can be combined with component carriers operating in licensed bands based on carrier aggregation configurations (e.g., LAA). Operation in unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.

[0070] Base station 105 or UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of base station 105 or UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operation or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly such as an antenna tower. In some examples, the antennas or antenna arrays associated with base station 105 may be located in different geographical locations. Base station 105 may have an antenna array with multiple rows and columns of antenna ports, which base station 105 may use to support beamforming for communication with UE 115. Similarly, UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, antenna panels may support radio frequency beamforming for signals transmitted via antenna ports.

[0071] Base station 105 or UE 115 can use MIMO communication to leverage multipath signal propagation and improve spectral efficiency by transmitting or receiving multiple signals via different spatial layers. This technique can be referred to as spatial multiplexing. For example, multiple signals can be transmitted by a transmitting device via different antennas or different combinations of antennas. Similarly, multiple signals can be received by a receiving device via different antennas or different combinations of antennas. Each of the multiple signals can be referred to as a separate spatial stream and can carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers can be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO) in which multiple spatial layers are transmitted to the same receiving device and multi-user MIMO (MU-MIMO) in which multiple spatial layers are transmitted to multiple devices.

[0072] Beamforming (also known as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting or receiving device (e.g., base station 105 or UE 115) to form or guide an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting and receiving devices. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array such that some signals propagating relative to the antenna array in a particular direction undergo constructive interference, while others undergo destructive interference. Adjustments to the signals transmitted via the antenna elements can include the transmitting or receiving device applying amplitude shifts, phase shifts, or both to the signals carried via the antenna elements associated with that device. The adjustments associated with each antenna element can be defined by a set of beamforming weights associated with a particular direction (e.g., relative to the antenna array of the transmitting or receiving device, or relative to some other direction).

[0073] Base station 105 or UE 115 may use beam scanning technology as part of beamforming operations. For example, base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted multiple times by base station 105 in different directions. For example, base station 105 may transmit signals according to different beamforming weight sets associated with different transmission directions. Beam directions may be identified using transmissions in different beam directions (e.g., by a transmitting device such as base station 105, or by a receiving device such as UE 115) for later transmission or reception by base station 105.

[0074] Some signals (such as data signals associated with a specific receiving device) may be transmitted by base station 105 in a single beam direction (e.g., the direction associated with a receiving device such as UE 115). In some examples, the beam direction associated with transmission along a single beam direction may be determined based on the signals transmitted in one or more beam directions. For example, UE 115 may receive one or more signals transmitted by base station 105 in different directions and may report to base station 105 an indication of the signals received by UE 115 with the highest signal quality or other acceptable signal quality.

[0075] In some examples, multiple beam directions can be used to perform transmissions by a device (e.g., base station 105 or UE 115), and the device can use a combination of digital precoding or radio frequency beamforming to generate a combined beam for transmission (e.g., from base station 105 to UE 115). UE 115 can report feedback indicating precoding weights for one or more beam directions, and this feedback can correspond to a configured number of beams across the system bandwidth or one or more subbands. Base station 105 can transmit reference signals that can be precoded or unprecoded (e.g., cell-specific reference signal (CRS), channel state information reference signal (CSI-RS)). UE 115 can provide feedback for beam selection, which can be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., multi-panel type codebook, linear combination type codebook, port selection type codebook). Although these techniques are described with reference to signals transmitted by base station 105 in one or more directions, UE 115 may use similar techniques to transmit signals multiple times in different directions (e.g., to identify the beam direction used by UE 115 for subsequent transmission or reception) or to transmit signals in a single direction (e.g., to transmit data to a receiving device).

[0076] When receiving various signals such as synchronization signals, reference signals, beam selection signals, or other control signals from base station 105, the receiving device (e.g., UE 115) can attempt multiple receiving configurations (e.g., directional listening). For example, the receiving device can attempt multiple receiving directions by: receiving via different antenna subarrays; processing the received signal according to different antenna subarrays; receiving according to different sets of receiving beamforming weights applied to signals received at multiple antenna elements of the antenna array (e.g., different sets of directional listening weights); or processing the received signal according to different sets of receiving beamforming weights applied to signals received at multiple antenna elements of the antenna array, any of which can be referred to as "listening" depending on the different receiving configurations or receiving directions. In some examples, the receiving device can use a single receiving configuration to receive along a single beam direction (e.g., when receiving data signals). The single receiving configuration can be aligned on a beam direction determined based on listening according to different receiving configuration directions (e.g., a beam direction determined to have the highest signal strength, the highest signal-to-noise ratio (SNR), or other acceptable signal quality based on listening according to multiple beam directions).

[0077] The wireless communication system 100 can be a packet-based network operating according to a layered protocol stack. In the user plane, communication at the bearer or Packet Data Convergence Protocol (PDCP) layer can be IP-based. The Radio Link Control (RLC) layer can perform packet segmentation and reassembly for communication on logical channels. The Media Access Control (MAC) layer can perform priority processing and multiplex logical channels into transport channels. The MAC layer can also use error detection techniques, error correction techniques, or both to support retransmissions at the MAC layer to improve link efficiency. In the control plane, the Radio Resource Control (RRC) protocol layer can provide the establishment, configuration, and maintenance of RRC connections (which support radio bearers for user plane data) between the UE 115 and the base station 105 or core network 130. At the physical layer, transport channels can be mapped to physical channels.

[0078] UE 115 and base station 105 can support data retransmission to increase the likelihood of successful data reception. Hybrid Automatic Repeat Request (HARQ) feedback is a technique to increase the likelihood of correct data reception over communication link 125. HARQ can include a combination of error detection (e.g., using Cyclic Redundancy Check (CRC)), forward error correction (FEC), and retransmission (e.g., Automatic Repeat Request (ARQ)). HARQ can improve throughput at the MAC layer under poor radio conditions (e.g., low signal-to-noise ratio conditions). In some examples, the device can support same-slot HARQ feedback, where the device can provide HARQ feedback for data received in a previous symbol within a specific time slot. In other cases, the device can provide HARQ feedback in subsequent time slots or according to some other time interval.

[0079] Therefore, the wireless communication system 100 can support various technologies for sidelink positioning (e.g., RTT-based sidelink positioning) within the UE 115 group. As an example, UE 115 can be the group owner of the UE group. For instance, UE 115 can be a UE configured as the group owner by an upper layer, or UE 115 can perform group owner functions for the UE group, or a combination thereof. The group owner UE 115 can receive service information from other UE 115s (e.g., from an upper layer, from other UE 115s, or both). In some examples, other UE 115s in the UE 115 group can be referred to as "member" UE 115s. Member UE 115s can communicate with the UE 115 group using sidelink communication. In some examples, member UE 115s can continuously monitor sidelink communication (e.g., positioning reference signals (PRS)) from other member UE 115s in the UE 115 group.

[0080] As described herein, a group of UEs supporting RTT-based sidelink positioning may include roadside units (RSUs) and vehicles (e.g., on-board units (OBUs) mounted on vehicles). The RSU may be a dedicated short-range communication (DSRC) transceiver installed along a road or pedestrian walkway. The RSU may be mounted on a vehicle or handheld, and the RSU may operate while the vehicle or (when handheld) is stationary. The RSU may broadcast data to the OBU (e.g., mounted on a vehicle) or exchange data with the OBU.

[0081] In some cases, the RSU can act as a gateway between the OBU and the communication infrastructure (e.g., wireless communication system 100). For example, the RSU can provide channel allocation and operational instructions to the OBU in its communication area. In some examples, the RSU can provide connectivity and information support, such as safety warnings and traffic information, to passing vehicles (e.g., OBUs installed in vehicles). The RSU and vehicles can be associated with or configured as a group by an upper layer. In some aspects, to operate in unlicensed radio spectrum bands, the RSU and vehicles can perform group LBT operations. In some examples, the initiator of a group LBT operation can reserve Channel Occupancy Time (CoT) for the initiator and associated responders.

[0082] In some aspects, the group of UEs 115 supporting RTT-based sidelink positioning can include non-anchor devices (e.g., UEs 115 that cannot accurately determine their location (within a threshold)) and anchor devices (e.g., UEs 115 that can accurately determine their location). In some examples, non-anchor devices can include UEs 115 associated with pedestrians (e.g., portable devices carried or worn by a user). In some examples, non-anchor devices can include UEs 115 associated with vehicles not coupled to an accurate (e.g., with accuracy above a threshold) positioning system. In some other examples, non-anchor devices can include vehicles moving at speeds above a speed threshold. In some examples, anchor devices can include UEs 115, such as RSUs, vehicles coupled to accurate positioning systems, stationary vehicles coupled to accurate positioning systems, or OBUs coupled to vehicles.

[0083] Non-anchor devices can use sidelink positioning (e.g., RTT-based methods) to estimate their location, for example, based on positioning reference signals broadcast (e.g., exchanged between) by the non-anchor device and the anchor device (or another non-anchor device). For example, the non-anchor device and the anchor device (or other non-anchor devices) can each broadcast their respective positioning reference signals. In some aspects, RTT-based sidelink positioning for UE 115 groups can support post-positioning reference signal message transmission (e.g., broadcasting of post-positioning reference signal messages) between group members. This message transmission can include location information calculated using sidelink-based (SL-b) positioning, where UE 115 (e.g., non-anchor devices, such as vehicles not coupled to a precise positioning system) calculates their respective locations in a distributed manner. In some aspects, this message transmission can include location information calculated using sidelink-assisted (SL-a) positioning, where UE 115 (e.g., an anchor device such as an RSU) or a location server calculates the vehicle's location on behalf of the vehicle.

[0084] In the example, post-positioning reference signaling message transmission between the RSU (e.g., an anchor device) and the vehicle (e.g., a non-anchor device, for cases where the vehicle is not coupled to a precise positioning system) may include time information (e.g., arrival time, departure time) associated with the positioning reference signals exchanged between the RSU and the vehicle. In some cases, for SL-b positioning, post-positioning reference signaling message transmission from the RSU to the vehicle may include the departure time of the RSU positioning reference signal (from the RSU) and the arrival time of the vehicle positioning reference signal (to the RSU). In some cases, for SL-b positioning, post-positioning reference signaling message transmission (e.g., from the RSU to the vehicle, from the vehicle to the RSU) may include any combination of the RSU and vehicle position or positioning information, measured clock error noise standard deviation, and clock drift standard deviation. For SL-a positioning, post-positioning reference signaling message transmission from the vehicle to the RSU may include the arrival time of the RSU positioning reference signal (to the vehicle) and the departure time of the vehicle positioning reference signal (from the vehicle). In some cases, for SL-a positioning, the post-positioning reference signaling message transmission (e.g., from RSU to vehicle, from vehicle to RSU) can include any combination of RSU and vehicle position or positioning information, measured clock error noise standard deviation, vehicle speed, and clock drift standard deviation. Examples of various aspects of post-positioning reference signaling message transmission are available in [reference]. Figures 3A to 5 Describe it.

[0085] Based on examples from the aspects described herein, UE 115 (e.g., a non-anchor device) can receive a directional positioning reference signal from another UE 115 (e.g., an anchor device or another non-anchor device) via one or more beams. In response to the reception of the directional positioning reference signal, UE 115 (e.g., a non-anchor device) can transmit, and other UE 115 (e.g., an anchor device or other non-anchor device) can receive, a broadcast positioning reference signal. UE 115 (e.g., a non-anchor device) can receive from other UE 115 (e.g., an anchor device or other non-anchor device) a report including timing and directionality associated with the transmission of the directional positioning reference signal. This report may also include timing and directionality associated with the reception of the broadcast positioning reference signal at other UE 115 (e.g., an anchor device or other non-anchor device).

[0086] UE 115 (e.g., a non-anchor device) may determine a reference signal received power value for each of the one or more beams based on the reception of a directional positioning reference signal through each of the one or more beams. In some aspects, UE 115 may assign a class to each of the one or more beams based on the reference signal received power value determined for the one or more beams. In some examples, in response to a report, UE 115 (e.g., a non-anchor device) may send beam-specific measurement information associated with the one or more beams (e.g., the reference signal received power value, and the beam class based on that reference signal received power value) to other UE 115s (e.g., an anchor device or other non-anchor device). UE 115 (e.g., a non-anchor device) may communicate with other UE 115s (e.g., an anchor device or other non-anchor device) using the beams in the one or more beams based on the report and the beam-specific measurement information. One or more UEs 115 may include a UE communication manager 101, which may perform any features of a UE 115 (e.g., a non-anchor device) or other UEs 115 (e.g., an anchor device or other non-anchor device) as described herein.

[0087] Figure 2A and Figure 2B Examples of group listen-before-speak (LBT) processes 200 and 201 in some systems are illustrated. In some examples, group LBT processes 200 and 201 can be implemented through various aspects of wireless communication system 100. For example, group LBT processes 200 and 201 can be implemented using references. Figure 1 The described UE 115 group (e.g., group owner UE 115, one or more member UE 115s) implementation. Group LBT procedures 200 and 201 represent examples of channel utilization (e.g., relative to time) for single-member and multi-member cases.

[0088] The group owner UE 115 can reserve a channel for a duration (e.g., reserve CoT) for member UEs 115 in the UE 115 group. In one example, the UE 115 group may include the group owner UE 115 and a single member UE 115. In another example, the UE 115 group may include the group owner UE 115 and multiple member UEs 115. Referring to group LBT procedures 200 and 201, GO may represent the LBT procedure performed by the group owner UE 115, while M1 to M3 may represent the corresponding LBT procedures performed by the member UEs 115. In some other aspects, M1 to M3 may represent the number (e.g., quantity) of different beams in group LBT procedure 201. The group owner UE 115 may perform a Category 4 (CAT 4) LBT procedure (e.g., an LBT with random backoff and a variable-size contention window). Member UEs 115 may each perform a Category 2 (CAT 2) LBT procedure (e.g., an LBT without random backoff).

[0089] Figure 3A and Figure 3B The illustration depicts an example wireless communication system 300 and signaling timeline 301 described with reference to RTT-based sidelink positioning (e.g., SL-b and SL-a positioning) in some systems. In some examples, the example wireless communication system 300 may implement aspects of the wireless communication system 100. The example signaling timeline 301 may be implemented through aspects of the wireless communication system 100.

[0090] In some examples, the wireless communication system 300 may include a group of devices, including RSU 305-a, RSU 305-b, RSU 305-c, and vehicle 315. RSU 305-a to RSU 305-c may include reference... Figure 1 The description includes example aspects of the RSU (e.g., anchor equipment) and UE 115 (e.g., anchor equipment). Vehicle 315 may include references. Figure 1 The description includes example aspects of the vehicle (e.g., non-anchored equipment) and UE 115 (e.g., non-anchored equipment). In some cases, RSU 305-a to RSU 305-c and vehicle 315 can communicate with each other using peer-to-peer communication (e.g., D2D communication such as sidelink communication, etc.) (e.g., within a V2X system, D2D system, etc.).

[0091] refer to Figure 3AVehicle 315 can determine its position based on the position information of RSUs 305-a to RSU 305-c. For example, RSUs 305-a to RSU 305-c and vehicle 315 can be combined (e.g., phase 1) to perform a group LBT procedure. In the example, RSUs 305-a to RSU 305-c and vehicle 315 can perform as described in the reference... Figure 1 and Figure 2A , Figure 2B The described group LBT process (e.g., phase 2). For example, RSU 305-a can initiate a group LBT process to reserve a certain number of time slots for positioning reference signal transmission for RSU 305-a and all other members in the same group (e.g., RSU 305-b, RSU 305-c, vehicle 315).

[0092] Group members may broadcast corresponding location reference signals during these time slots. For example, RSUs 305-a to 305-c may respectively transmit (e.g., broadcast) location reference signals 310-a to 310-c. Location reference signals 310-a to 310-c may be received at vehicle 315 and other vehicles 315. In some aspects, RSUs 305-a to 305-c may sequentially transmit (e.g., broadcast) location reference signals 310-a to 310-c, as shown at signaling timeline 301. Vehicle 315 may sequentially transmit (e.g., broadcast) location reference signal 320 (e.g., after location reference signal 310-c) relative to location reference signals 310-a to 310-c, as shown at signaling timeline 301.

[0093] RSUs 305-a to 305-c can perform ITS message exchange with vehicle 315 based on positioning reference signals 310-a to 310-c and positioning reference signal 320. In the SL-b positioning example, RSUs 305-a to 305-c can be sent (e.g., broadcast) and vehicle 315 can receive ITS messages 325-a to 325-c. Each ITS message 325 (e.g., ITS messages 325-a to 325-c) can include measurement information about the positioning reference signal, such as the departure time of the positioning reference signal broadcast by the respective RSU 305 (e.g., RSUs 305-a to 305-c). In some examples, the measurement information in each ITS message 325 (e.g., ITS messages 325-a to 325-c) may also include the arrival time of the positioning reference signal 320 received from the vehicle 315 by the corresponding RSU 305 (e.g., RSU 305-a to RSU 305-c). For example, ITS message 325-a may include the departure time of the positioning reference signal 310-a broadcast by RSU 305-a and the arrival time of the positioning reference signal 320 received by RSU 305-a.

[0094] Based on the measurement information included in ITS messages 325 (e.g., ITS messages 325-a to ITS messages 325-c), vehicle 315 can calculate or estimate its position or location information. In some aspects, vehicle 315 can calculate or estimate clock errors at its location based on the measurement information. An example of calculating the position or location information of vehicle 315 is provided in the ITS messages 325 (e.g., ITS messages 325-a to ITS messages 325-c). Figure 4 Describe it.

[0095] Positioning in SL-a ( Figure 3A and Figure 3B In an example (not shown), vehicle 315 may send (e.g., broadcast) an ITS message that can be received by any of RSUs 305-a to RSU 305-c. The ITS message may include measurement information about the positioning reference signal, such as the departure time of positioning reference signal 320 sent by vehicle 315. In some examples, the measurement information in the ITS message may also include the arrival time of positioning reference signal 310 (e.g., any of positioning reference signals 310-a to 310-c) received by vehicle 315 from the corresponding RSU 305 (e.g., RSUs 305-a to RSU 305-c).

[0096] Based on the measurement information included in the ITS message, RSU 305 (e.g., any one of RSU 305-a to RSU 305-c) can calculate or estimate the position or location information of RSU 305. In some aspects, RSU 305 can calculate or estimate the clock error at RSU 305 based on the measurement information. An example of calculating the position or location information of RSU 305 and the ITS message sent (e.g., broadcast) by vehicle 315 is provided. Figure 4 Describe it.

[0097] Figure 4 The diagram illustrates an example of a process flow 400 (relative to time) between RSU 405 and vehicle 415 supporting RTT-based side-link positioning (e.g., SL-b or SL-a positioning) in some systems. RSU 405 and vehicle 415 can be RSU 305 (e.g., any one of RSU 305-a to RSU 305-c) and... Figure 3A , Figure 3B Example of vehicle 315. In some examples, process flow 400 can be referenced. Figure 1 and Figure 3A , Figure 3B The described wireless communication system 100 or 300 and signaling timeline 301 are implemented in various aspects. RSU 405 can transmit (e.g., broadcast) a positioning reference signal 410 at time t1, and vehicle 415 can receive this positioning reference signal at time t2. Vehicle 415 can transmit (e.g., broadcast) a positioning reference signal 420 at time t3, and RSU 405 can receive this positioning reference signal at time t4. Positioning reference signal 410 and positioning reference signal 420 may each include a reference... Figure 3A and Figure 3B Examples of various aspects of the described positioning reference signal 310 (e.g., positioning reference signal 310-a) and positioning reference signal 320.

[0098] In the SL-b positioning example, RSU 405 can send (e.g., broadcast) and vehicle 415 can receive ITS message 425. ITS message 425 may include measurement information about the positioning reference signal, such as the departure time (e.g., time point t1) of the positioning reference signal 410 broadcast by RSU 405. In some examples, the measurement information in ITS message 425 may also include the arrival time (e.g., time point t4) of the positioning reference signal 420 received by RSU 405 from vehicle 415. In some aspects, the departure time of positioning reference signal 410 may be equal to t1' (e.g., based on the local clock of RSU 405, such that t1' may be the same as or different from time point t1). In some aspects, the arrival time of positioning reference signal 420 may be equal to t4' (e.g., based on the local clock of RSU 405, such that t4' may be the same as or different from time point t4).

[0099] Based on the measurement information included in ITS message 425, vehicle 415 can calculate or estimate its position or location information. In some aspects, vehicle 415 can calculate or estimate the clock error at its location based on the measurement information. In some examples, vehicle 415 can use a Kalman filter (or any other technique) to calculate its position or location information. For example, vehicle 415 can use a time-series-based method to calculate its position or location information.

[0100] In terms of examples, vehicle 415 can use equations containing time points t1 to t4 to calculate its position or location information. For example, vehicle 415 can use Equation 1 to calculate its position or location information Zn:

[0101]

[0102] Where α is a constant aspect of the clock error at vehicle 415, the clock error can be equal to the difference between the clock time (e.g., time point) associated with transmitting a signal from vehicle 415 and the clock time (e.g., time point) associated with receiving the same signal at RSU 405. In Equation 1, r can correspond to the position of RSU 405, vlight can be equal to the speed of light, and x(tn) can correspond to the position of vehicle 415 at time tn.

[0103] In the SL-a positioning example, vehicle 415 may send (e.g., broadcast) an ITS message 430 that can be received by RSU 405. ITS message 430 may include measurement information about the positioning reference signal, such as the departure time t3 of the positioning reference signal 420 sent by vehicle 415. In some examples, the measurement information in ITS message 430 may also include the arrival time of the positioning reference signal 410 received by vehicle 415 from RSU 405. In some aspects, the departure time of positioning reference signal 420 may be equal to t3' (e.g., based on the vehicle 415's local clock, such that t3' may be the same as or different from time t3). In some aspects, the arrival time of positioning reference signal 410 may be equal to t2' (e.g., based on the vehicle 415's local clock, such that t2' may be the same as or different from time t2).

[0104] Based on the measurement information included in the ITS message, RSU 405 can calculate or estimate its position or location information. In some aspects, RSU 405 can calculate or estimate the clock error at RSU 405 based on the measurement information. In some examples, RSU 405 can use a Kalman filter (or any other technique) to calculate its position or location information. For example, RSU 405 can use a time-series-based method to calculate its position or location information. In an example aspect, RSU 405 can use an equation containing time points t1 to t4 to calculate its position or location information. For example, RSU 405 can use Equation 1 to calculate the position or location information Zn of RSU 405:

[0105] refer to Figure 3A and Figure 3B as well as Figure 4 The example aspects described regarding the relationship between the RSU and the vehicle can be applied to both the location server and the vehicle. For instance, a positioning reference signal can be exchanged between the Server Location Client Function (S-LCF) and the vehicle 415, and used to estimate the position or location information (or clock error) of the S-LCF or the vehicle 415 using the example techniques described herein.

[0106] Figure 3A , Figure 3B and Figure 4The various aspects of the use of positioning reference signals in some systems using the unlicensed band are described here. However, in mmW communications, the penetration or coverage of the transmitted positioning reference signal may be limited due to narrow beamwidth and interfering objects. In some cases, when the positioning reference signal is broadcast directionally through different beams (e.g., using beam patterns available to the transmitting device), the positioning reference signal may be affected differently because the channel implementations associated with the beams (e.g., channel quality, channel occupancy) are different. Therefore, in some cases, using SL-b or SL-a positioning techniques suitable for the unlicensed band (e.g., for group LBT processes and group positioning reference signal transmission) may be unreliable and increase latency when applied to the mmW band.

[0107] For example, in the case of omnidirectional LBT technology in the mmW band, carrier sensing can be omnidirectional. In some cases, omnidirectional carrier sensing may be robust to the hidden node problem, but at the cost of reduced spatial reuse (e.g., overprotection). In some examples, in the case of directional LBT technology in the mmW band, LBT carrier sensing can be directional. In some cases, directional LBT carrier sensing can increase spatial reuse, but at the cost of less robustness to the hidden node problem (e.g., weaker protection). In the 5 GHz and 60 GHz bands of unlicensed spectrum, group LBT can be implemented by sharing the CoT, and the positioning reference signal in the mmW band may or may not be located in these bands. Furthermore, based on frequency specifications or region-specific regulations, a combination of omnidirectional and directional LBT technologies can be implemented for millimeter-wave transmission.

[0108] The techniques described herein may include applying distributed mmW positioning (e.g., SL-b-based positioning) to the transmission of positioning reference signals using mmW bands, examples of which are provided below. Figure 5 Describe it.

[0109] Figure 5 An example of a process flow 500 supporting bidirectional positioning reference signal measurement exchange in mmW-based RTT positioning is illustrated according to various aspects of this disclosure. In some examples, process flow 500 may implement aspects of wireless communication system 100, wireless communication system 300, signaling timeline 301, and process flow 400.

[0110] Process flow 500 can be implemented by UE 115a and UE 115b, which can be a reference. Figure 1 An example of UE 115 is described. UE 115-a can be a non-anchored device. For example, UE 115-a may include a reference Figure 3A , Figure 3B and Figure 4 Example aspects of vehicle 315 or vehicle 415 described. UE 115-b may be an anchoring device. For example, UE 115-a may include a reference Figure 3A , Figure 3B and Figure 4 The description includes example aspects of RSUs 305-a to 305-c or RSU 405. In some aspects, UE 115-b may be a non-anchor device that is randomly selected to act as an anchor device. In some cases, UE 115-b may be randomly selected by an upper layer. In some cases, UE 115-b may randomly select itself to act as an anchor device. In some aspects, any technique associated with random selection (e.g., randomly selecting a UE from the total number of UEs) may be applied to select a non-anchor device to act as an anchor device. In some examples, selecting a non-anchor device to act as an anchor device may be based on non-anchor to non-anchor positioning.

[0111] At point 505 (e.g., at time t1), UE 115-b can transmit the orientation reference signal 510 via a beam set (e.g., using different beams). In some respects, UE 115-b can use different beams to broadcast the orientation reference signal 510.

[0112] At point 515 (e.g., at time t2), UE 115-a can receive orientation positioning reference signal 510 through one or more beams in the beam set. In some aspects, UE 115-a can receive multiple positioning reference signals from multiple UE 115s (e.g., multiple anchor devices such as multiple RSUs, or multiple non-anchor devices).

[0113] At point 520 (e.g., at time t3), UE 115-a may transmit a broadcast positioning reference signal 525 in response to the reception of the orientation positioning reference signal 510. In some aspects, UE 115-a may use an omnidirectional beam (e.g., in 64 directions) to transmit the broadcast positioning reference signal 525. In some examples, UE 115-a may use an omnidirectional beam as the default configuration to transmit the broadcast positioning reference signal 525.

[0114] At 530 (e.g., at time t4), UE 115-b may receive broadcast positioning reference signal 525 from UE 115-a in response to the reception of orientation positioning reference signal 510 at UE 115-a via one or more beams in the beam set.

[0115] At point 535, UE 115-b may send a report 540 to UE 115-a including timing and directionality associated with the transmission of the orientation positioning reference signal 510 (as shown in Example Table 1 below). Report 540 may include timing and directionality associated with the reception of the broadcast positioning reference signal 525 at UE 115-b. In some aspects, report 540 may include at least one of a time instance (e.g., departure time) and direction (e.g., departure angle, departure direction) associated with the transmission of the orientation positioning reference signal 510 by UE 115-b via one or more beams. In some aspects, report 540 may include at least one of a time instance (e.g., arrival time) and direction (e.g., arrival angle, arrival direction) associated with the reception of the broadcast positioning reference signal 525 at UE 115-b.

[0116]

[0117] Table 1

[0118] In some examples, UE 115-b can use an ITS message to send report 540. At 545, UE 115-a can receive report 540.

[0119] At 550, UE 115-a can determine a reference signal received power value for each of the one or more beams based on the reception of the orientation positioning reference signal 510 through each of the one or more beams. In some aspects, UE 115-a can assign a class to each of the one or more beams based on the reference signal received power value determined for each of the one or more beams.

[0120] At 555, UE 115-a may send beam-specific measurement information 560 associated with one or more beams to UE 115-b, and at 565, UE 115-b may receive the beam-specific measurement information 560. In some aspects, the beam-specific measurement information 560 may include a reference signal received power value and a beam class based on that reference signal received power value (as shown in Example Table 2 below). Regarding the angle of arrival and departure angle indicated in report 540 and the beam-specific measurement information 560, UE 115-a and UE 115-b (e.g., non-anchored and anchored) may be affected by initial orientation errors (e.g., based on the corresponding sensors or gyroscopes of UE 115-a and UE 115-b), such that the angle of arrival and departure angle may have a level of accuracy with respect to factors.

[0121] Therefore, UE 115-a can report beam-specific measurement information 560 regarding different orientation positioning reference signal transmissions. In some aspects, beam-specific measurement information 560 may include a set of beam indices or beam patterns associated with each of one or more beams. For example, beam-specific measurement information 560 may indicate the beam patterns available to UE 115-a. In some aspects, UE 115-a may use an ITS message to send beam-specific measurement information 560.

[0122] Angle of arrival Arrival time RSRP RSRP Level RSU1 beam 1 x x x 1 RSU1 beam 2 y y y 2 RSU1 beam 3 z z z 3 RSU2 beam 1 w w w 4

[0123] Table 2

[0124] In some respects, UE 115-a can select one or more beams from one or more beams for communication with UE 115-b in the next cycle based on the reference signal received power value of one or more beams. By evaluating the beams based on the reference signal received power value, UE 115-a can identify potential congestion regarding the beams used to communicate with UE 115-b. For example, by first transmitting a broadcast positioning reference signal 525 using an omnidirectional (e.g., in 64 directions) beam at 520, and then selecting the beam based on the reference signal received power value, UE 115-a can select the beams used to successfully broadcast (e.g., directionally) the positioning reference signal in the next cycle (e.g., avoiding potential transmission congestion). Such an example technique may be superior to some systems that can directionally broadcast the positioning reference signal in the first stage (e.g., at 520), which may be susceptible to congestion. Furthermore, in some aspects, UE 115-a or UE 115-b may reduce the number of potential beams used to transmit the positioning reference signal based on the reference signal received power value (e.g., based on whether the beam is affected by blocking). For example, UE 115-a or UE 115-b may reduce the number of beams from 64 beams to 32 beams based on the reference signal received power value.

[0125] In some other aspects, at 570, UE 115-b may send an indication 575 for the beam used to communicate with UE 115-b based on beam-specific measurement information received by UE 115-b. For example, UE 115-b may select a beam for UE 115-a to broadcast (e.g., directionally) a positioning reference signal in the next cycle (e.g., to avoid potential transmission congestion), and UE 115-b may transmit the beam selection in indication 575. In some examples, UE 115-b may send indication 575 via an ITS message. In this example, UE 115-b may acknowledge the beam pattern received by UE 115-a, and UE 115-b may determine whether to reduce or remove the positioning reference signal set. In some aspects, UE 115-b may use an index number associated with the reduced positioning reference signal set to send indication 575. For example, when using the first 32 of 64 possible beams to transmit a positioning reference signal, the payload of indicator 575 may include indices 1 to 32.

[0126] At 580, UE 115-a can communicate with UE 115-b using one or more beams based on reports and beam-specific measurement information.

[0127] In the following description of process flow 500, the operations between UE 115a and UE 115-b may be performed in a different order than shown, or at different times. Some operations may also be excluded from process flow 500, or other operations may be added to process flow 500. It should be understood that although UE 115a and UE 115-b are shown performing several operations of process flow 500, any wireless device can perform the operations shown.

[0128] Figure 6 A block diagram 600 of a device 605 supporting bidirectional positioning reference signal measurement exchange in mmW-based RTT positioning is illustrated according to various aspects of this disclosure. Device 605 may be an example of various aspects of UE 115 as described herein. Device 605 may include a receiver 610, a communication manager 615, and a transmitter 620. Device 605 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0129] Receiver 610 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to bidirectional positioning reference signal measurement exchange in mmW-based RTT positioning). This information can be transmitted to other components of device 605. Receiver 610 can serve as a reference... Figure 9Examples of various aspects of the transceiver 920 are described. The receiver 610 may utilize a single antenna or an antenna set.

[0130] The communication manager 615 can: receive a directional positioning reference signal via one or more beams in a beam set; transmit a broadcast positioning reference signal in response to the reception of the directional positioning reference signal; receive from a second wireless device a report including timing and directionality associated with the transmission of the directional positioning reference signal and the reception of the broadcast positioning reference signal at the second wireless device; transmit beam-specific measurement information associated with one or more beams in the beam set to the second wireless device in response to the reception of the report; and communicate with the second wireless device using one or more beams based on the report and the beam-specific measurement information.

[0131] The communication manager 615 may also: transmit a directional positioning reference signal via a beam set; receive a broadcast positioning reference signal from the first wireless device in response to the reception of the directional positioning reference signal at the first wireless device via one or more beams in the beam set; transmit to the first wireless device a report including timing and directionality associated with the transmission of the directional positioning reference signal at the second wireless device and the reception of the broadcast positioning reference signal; receive beam-specific measurement information associated with one or more beams in the beam set from the first wireless device in response to the reception of the report at the first wireless device; and communicate with the first wireless device using one or more beams based on the report and the beam-specific measurement information. The communication manager 615 may be an example of aspects of the communication manager 910 described herein.

[0132] The communication manager 615 or its sub-components may be implemented in hardware, in code (e.g., software) executed by a processor, or in any combination thereof. If implemented in code executed by a processor, the functionality of the communication manager 615 or its sub-components may be performed by a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in this disclosure.

[0133] The communication manager 615 or its subcomponents may be physically located in various locations, including distributed components such that parts of the functionality are implemented by one or more physical components at different physical locations. In some examples, the communication manager 615 or its subcomponents may be independent and distinct components according to various aspects of this disclosure. In some examples, the communication manager 615 or its subcomponents may be combined with one or more other hardware components according to various aspects of this disclosure, including but not limited to input / output (I / O) components, transceivers, network servers, other computing devices, one or more other components described in this disclosure, or combinations thereof.

[0134] Transmitter 620 can transmit signals generated by other components of device 605. In some examples, transmitter 620 may be co-located with receiver 610 in a transceiver module. For example, transmitter 620 may be a reference... Figure 9 Examples of various aspects of the transceiver 920 are described. The transmitter 620 may utilize a single antenna or a set of antennas.

[0135] Figure 7 A block diagram 700 of a device 705 supporting bidirectional positioning reference signal measurement exchange in mmW-based RTT positioning is shown according to various aspects of this disclosure. Device 705 may be an example of various aspects of device 605 or UE 115 as described herein. Device 705 may include a receiver 710, a communication manager 715, and a transmitter 740. Device 705 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0136] Receiver 710 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to bidirectional positioning reference signal measurement exchange in mmW-based RTT positioning). This information can be transmitted to other components of device 705. Receiver 710 can serve as a reference... Figure 9 Examples of various aspects of the transceiver 920 are described. The receiver 710 may utilize a single antenna or an antenna set.

[0137] Communication manager 715 may be an example of aspects of communication manager 615 as described herein. Communication manager 715 may include reference signal component 720, reporting component 725, measurement component 730, and beam component 735. Communication manager 715 may be an example of aspects of communication manager 910 described herein.

[0138] Reference signal component 720 can receive directional positioning reference signals via one or more beams in the beamset, and in response to the reception of the directional positioning reference signals, transmit broadcast positioning reference signals. Reporting component 725 can receive reports from the second wireless device including timing and directionality associated with the transmission of the directional positioning reference signals and the reception of the broadcast positioning reference signals at the second wireless device. Measurement component 730 can, in response to the reception of the reports, transmit beam-specific measurement information associated with one or more beams in the beamset to the second wireless device. Beaming component 735 can communicate with the second wireless device using beams from one or more beams based on the reports and beam-specific measurement information.

[0139] Reference signal component 720 can transmit a directional positioning reference signal via a beamset, and in response to reception of the directional positioning reference signal at a first wireless device via one or more beams in the beamset, receive a broadcast positioning reference signal from the first wireless device. Reporting component 725 can send a report to the first wireless device including timing and directionality associated with the transmission of the directional positioning reference signal and the reception of the broadcast positioning reference signal at a second wireless device. Measurement component 730 can receive beam-specific measurement information associated with one or more beams in the beamset from the first wireless device in response to reception of the report at the first wireless device. Beaming component 735 can communicate with the first wireless device using one or more beams based on the report and the beam-specific measurement information.

[0140] Transmitter 740 can transmit signals generated by other components of device 705. In some examples, transmitter 740 can be co-located with receiver 710 in a transceiver module. For example, transmitter 740 can be a reference... Figure 9 Examples of various aspects of the transceiver 920 are described. The transmitter 740 can utilize a single antenna or a set of antennas.

[0141] Figure 8 A block diagram 800 of a communication manager 805 supporting bidirectional positioning reference signal measurement exchange in mmW-based RTT positioning is shown according to various aspects of this disclosure. The communication manager 805 may be an example of aspects of the communication manager 615, communication manager 715, or communication manager 910 as described herein. The communication manager 805 may include a reference signal component 810, a reporting component 815, a measurement component 820, a beamforming component 825, and a grading component 830. Each of these modules may communicate directly or indirectly with each other (e.g., via one or more buses).

[0142] Reference signal component 810 can receive directional positioning reference signals via one or more beams in a beamset. In some examples, reference signal component 810 can transmit broadcast positioning reference signals in response to the reception of directional positioning reference signals. In some examples, reference signal component 810 can transmit directional positioning reference signals via a beamset. In some examples, reference signal component 810 can receive broadcast positioning reference signals from a first wireless device in response to the reception of directional positioning reference signals via one or more beams in a beamset.

[0143] In some cases, the first wireless device includes a non-anchor device in the RTT positioning scheme. In some cases, the second wireless device includes an anchor device in the RTT positioning scheme. In some cases, the second wireless device includes another non-anchor device in the RTT positioning scheme. In some cases, the second wireless device includes an RSU in the RTT positioning scheme.

[0144] Reporting component 815 can receive reports from the second wireless device including timing and directionality associated with the transmission of a directional positioning reference signal and the reception of a broadcast positioning reference signal at the second wireless device. In some examples, reporting component 815 can receive at least one of a time instance and direction associated with the transmission of a directional positioning reference signal by the second wireless device via one or more beams. In some examples, reporting component 815 can receive at least one of a time instance and direction associated with the reception of a broadcast positioning reference signal at the second wireless device. Measurement component 820 can, in response to the receipt of the reports, transmit beam-specific measurement information associated with one or more beams in the beamset to the second wireless device. In some examples, measurement component 820 can determine a reference signal received power value for each of the one or more beams based on the reception of the directional positioning reference signal via each of the one or more beams.

[0145] In some examples, measurement component 820 may transmit at least one of a time instance and direction associated with the reception of a directional positioning reference signal via one or more beams. Beaming component 825 may communicate with a second wireless device using beams from one or more beams based on reports and beam-specific measurement information. In some examples, beaming component 825 may select beams from one or more beams based on reference signal received power values ​​of one or more beams. In some examples, beaming component 825 may receive indications for beams from one or more beams based on transmitting beam-specific measurement information. Grading component 830 may assign a grading to each of the one or more beams based on reference signal received power values ​​determined for one or more beams. In some examples, transmitting beam-specific measurement information includes transmitting at least one of the reference signal received power values ​​determined for one or more beams and the assigned grading. In some examples, transmitting beam-specific measurement information includes transmitting at least one of a set of beam indices or beam patterns associated with each of the one or more beams.

[0146] In some examples, the reporting component 815 may send a report to the first wireless device including timing and directionality associated with the transmission of a directional positioning reference signal and the reception of a broadcast positioning reference signal at the second wireless device. In some examples, the measurement component 815 may send at least one of a time instance and direction associated with the transmission of the directional positioning reference signal via one or more beams. In some examples, the measurement component 815 may send at least one of a time instance and direction associated with the transmission of the directional positioning reference signal via one or more beams. In some examples, the measurement component 820 may receive beam-specific measurement information associated with one or more beams in a beamset from the first wireless device in response to the reception of a report at the first wireless device.

[0147] In some examples, receiving beam-specific measurement information includes receiving at least one of a beam index set and a beam pattern associated with each of the one or more beams. In some cases, the report includes a reference signal received power value for each of the one or more beams associated with a directional positioning reference signal. In some cases, the report includes at least one of a time instance and direction associated with a directional positioning reference signal received by the first wireless device via the one or more beams. In some cases, the report includes a rating associated with at least the reference signal received power value for each of the one or more beams. In some examples, beam assembly 825 can communicate with the first wireless device using the beams of the one or more beams based on the report and beam-specific measurement information. In some examples, beam assembly 825 can transmit indications of the beams of the one or more beams based on receiving the beam-specific measurement information.

[0148] Figure 9 A diagram of a system 900 including a device 905 supporting bidirectional positioning reference signal measurement exchange in mmW-based RTT positioning, according to various aspects of this disclosure, is shown. Device 905 may be an example of device 605, device 705, or UE 115 as described herein, or may include components thereof. Device 905 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, including a communication manager 910, an I / O controller 915, a transceiver 920, an antenna 925, a memory 930, and a processor 940. These components may communicate electronically via one or more buses (e.g., bus 945).

[0149] The communication manager 910 can: receive a directional positioning reference signal via one or more beams in a beam set; transmit a broadcast positioning reference signal in response to the reception of the directional positioning reference signal; receive from a second wireless device a report including timing and directionality associated with the transmission of the directional positioning reference signal and the reception of the broadcast positioning reference signal at the second wireless device; transmit beam-specific measurement information associated with one or more beams in the beam set to the second wireless device in response to the reception of the report; and communicate with the second wireless device using one or more beams based on the report and the beam-specific measurement information.

[0150] The communication manager 910 may also: transmit a directional positioning reference signal via a beam set; receive a broadcast positioning reference signal from the first wireless device in response to the reception of the directional positioning reference signal at the first wireless device via one or more beams in the beam set; transmit to the first wireless device a report including timing and directionality associated with the transmission of the directional positioning reference signal at the second wireless device and the reception of the broadcast positioning reference signal; receive beam-specific measurement information associated with one or more beams in the beam set from the first wireless device in response to the reception of the report at the first wireless device; and communicate with the first wireless device using one or more beams based on the report and the beam-specific measurement information.

[0151] The I / O controller 915 can manage the input and output signals of the device 905. The I / O controller 915 can also manage peripheral devices not integrated into the device 905. In some cases, the I / O controller 915 can represent a physical connection or port to an external peripheral device. In some cases, the I / O controller 915 can utilize, for example... The operating system or another known operating system. In other cases, the I / O controller 915 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the I / O controller 915 may be implemented as part of the processor. In some cases, the user may interact with the device 905 via the I / O controller 915 or via hardware components controlled by the I / O controller 915.

[0152] Transceiver 920 can communicate bidirectionally via one or more antennas, wired or wireless links as described above. For example, transceiver 920 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. Transceiver 920 may also include a modem to modulate packets and provide the modulated packets to the antenna for transmission, and to demodulate packets received from the antenna.

[0153] In some cases, a wireless device may include a single antenna 925. However, in other cases, the device may have more than one antenna 925, which is capable of transmitting or receiving multiple wireless transmissions simultaneously.

[0154] Memory 930 may include random access memory (RAM) and read-only memory (ROM). Memory 930 may store computer-readable, computer-executable code 935, including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, memory 930 may, in particular, include a basic I / O system (BIOS) that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0155] Processor 940 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 940 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 940. Processor 940 may be configured to execute computer-readable instructions stored in memory (e.g., memory 930) to cause device 905 to perform various functions (e.g., functions or tasks supporting bidirectional positioning reference signal measurement exchange in mmW-based RTT positioning).

[0156] Code 935 may include instructions for implementing various aspects of this disclosure, including instructions for supporting wireless communication. Code 935 may be stored in a non-transitory computer-readable medium such as system memory or other types of memory. In some cases, code 935 may not be directly executed by processor 940, but may enable a computer (e.g., when compiled and executed) to perform the functions described herein.

[0157] Figure 10 A flowchart is shown illustrating a method 1000 for supporting bidirectional positioning reference signal measurement exchange in mmW-based RTT positioning according to various aspects of this disclosure. Operation of method 1000 can be implemented by a UE 115 or its components as described herein. For example, operation of method 1000 can be performed by a reference... Figures 6 to 9 The described communication manager is used to perform this. In some examples, the UE can execute a set of instructions to control the UE's functional elements to perform the functions described below. Alternatively or concurrently, the UE can use dedicated hardware to perform aspects of the functions described below.

[0158] At point 1005, the UE can receive a directional positioning reference signal via one or more beams in the beam set. The operation of point 1005 can be performed according to the method described herein. In some examples, aspects of the operation of point 1005 can be determined by, as in the reference... Figures 6 to 9 The reference signal component described is used for execution.

[0159] At point 1010, the UE may transmit a broadcast positioning reference signal in response to receiving the orientation positioning reference signal. The operation of point 1010 can be performed according to the method described herein. In some examples, aspects of the operation of point 1010 may be determined by, as referenced... Figures 6 to 9 The reference signal component described is used for execution.

[0160] At point 1015, the UE can receive from the second radio device a report including timing and directionality associated with the transmission of a directional positioning reference signal and the reception of a broadcast positioning reference signal at the second radio device. Operation of point 1015 can be performed according to the method described herein. In some examples, aspects of operation of point 1015 can be determined by reference to... Figures 6 to 9 The described reporting component is used to perform this.

[0161] At point 1020, the UE may, in response to receiving a report, send beam-specific measurement information associated with one or more beams in the beam set to the second radio device. The operation of point 1020 can be performed according to the method described herein. In some examples, aspects of the operation of point 1020 may be derived from, as referenced... Figures 6 to 9 The described measurement components are used to perform this.

[0162] At point 1025, the UE can communicate with a second wireless device using one or more beams from one of the reported beams, based on reported and beam-specific measurement information. Operation of point 1025 can be performed according to the methods described herein. In some examples, aspects of operation of point 1025 can be derived from, as referenced... Figures 6 to 9 The beamforming components described are used to perform this.

[0163] Figure 11 A flowchart is shown illustrating a method 1100 for supporting bidirectional positioning reference signal measurement exchange in mmW-based RTT positioning according to various aspects of this disclosure. Operation of method 1100 can be implemented by a UE 115 or its components as described herein. For example, operation of method 1100 can be performed by a reference... Figures 6 to 9 The described communication manager is used to perform this. In some examples, the UE can execute a set of instructions to control the UE's functional elements to perform the functions described below. Alternatively or concurrently, the UE can use dedicated hardware to perform aspects of the functions described below.

[0164] At 1105, the UE can receive a directional positioning reference signal via one or more beams in the beam set. The operation of 1105 can be performed according to the method described herein. In some examples, aspects of the operation of 1105 can be determined by, as in the reference... Figures 6 to 9 The reference signal component described is used for execution.

[0165] At 1110, the UE may transmit a broadcast positioning reference signal in response to the reception of the orientation positioning reference signal. The operation of 1110 can be performed according to the method described herein. In some examples, aspects of the operation of 1110 may be determined by, as referenced... Figures 6 to 9 The reference signal component described is used for execution.

[0166] At 1115, the UE can receive from the second radio device a report including timing and directionality associated with the transmission of a directional positioning reference signal and the reception of a broadcast positioning reference signal at the second radio device. The operation of 1115 can be performed according to the method described herein. In some examples, aspects of the operation of 1115 can be determined by reference to... Figures 6 to 9 The described reporting component is used to perform this.

[0167] At 1120, the UE can determine a reference signal received power value for each of the one or more beams based on the reception of the orientation positioning reference signal through each of the one or more beams. The operation of 1120 can be performed according to the method described herein. In some examples, aspects of the operation of 1120 can be determined by, as in the reference... Figures 6 to 9 The described measurement components are used to perform this.

[0168] At 1125, the UE can assign a class to each of the one or more beams based on a reference signal received power value determined for one or more beams. The operation of 1125 can be performed according to the method described herein. In some examples, aspects of the operation of 1125 can be determined by, as reference... Figures 6 to 9 The described grade components are used to perform this.

[0169] At 1130, the UE may, in response to receiving a report, send beam-specific measurement information associated with one or more beams in the beam set to a second radio device. The beam-specific measurement information may include at least one of a reference signal received power value determined for the one or more beams and an assigned level. Operation of 1130 may be performed according to the methods described herein. In some examples, aspects of the operation of 1130 may be determined by, as referenced... Figures 6 to 9 The described measurement components are used to perform this.

[0170] At 1135, the UE can receive indication of one or more beams based on transmitted beam-specific measurement information. The operation of 1135 can be performed according to the method described herein. In some examples, aspects of the operation of 1135 can be derived from, as referenced... Figures 6 to 9 The beamforming components described are used to perform this.

[0171] At 1140, the UE can communicate with a second wireless device using one or more beams based on reported and beam-specific measurement information. The operation of 1140 can be performed according to the methods described herein. In some examples, aspects of the operation of 1140 can be derived from, as referenced... Figures 6 to 9 The beamforming components described are used to perform this.

[0172] Figure 12 A flowchart is shown illustrating a method 1200 for supporting bidirectional positioning reference signal measurement exchange in mmW-based RTT positioning according to various aspects of this disclosure. Operation of method 1200 can be implemented by a UE 115 or its components as described herein. For example, operation of method 1200 can be performed by a reference... Figures 6 to 9 The described communication manager is used to perform this. In some examples, the UE can execute a set of instructions to control the UE's functional elements to perform the functions described below. Alternatively or concurrently, the UE can use dedicated hardware to perform aspects of the functions described below.

[0173] At point 1205, the UE can transmit a directional positioning reference signal via a beamset. The operation of point 1205 can be performed according to the method described herein. In some examples, aspects of the operation of point 1205 can be determined by, as in the reference... Figures 6 to 9 The reference signal component described is used for execution.

[0174] At 1210, the UE can receive a broadcast positioning reference signal from the first radio device in response to the reception of a directional positioning reference signal at the first radio device via one or more beams in the beam set. The operation of 1210 can be performed according to the method described herein. In some examples, aspects of the operation of 1210 can be determined by reference to... Figures 6 to 9 The reference signal component described is used for execution.

[0175] At 1215, the UE may send a report to the first radio device including timing and directionality reports associated with the transmission of orientation positioning reference signals and the reception of broadcast positioning reference signals at the second radio device. The operation of 1215 can be performed according to the methods described herein. In some examples, aspects of the operation of 1215 may be determined by reference to... Figures 6 to 9 The described reporting component is used to perform this.

[0176] At 1220, the UE may, in response to receiving a report at the first radio device, receive beam-specific measurement information associated with one or more beams in the beam set from the first radio device. The operation of 1220 can be performed according to the methods described herein. In some examples, aspects of the operation of 1220 may be derived from, as referenced... Figures 6 to 9 The described measurement components are used to perform this.

[0177] At 1225, the UE can communicate with the first radio device using one or more beams based on reported and beam-specific measurement information. The operation of 1225 can be performed according to the methods described herein. In some examples, aspects of the operation of 1225 can be derived from, as referenced... Figures 6 to 9 The beamforming components described are used to perform this.

[0178] Figure 13 A flowchart is shown illustrating a method 1300 for supporting bidirectional positioning reference signal measurement exchange in mmW-based RTT positioning according to various aspects of this disclosure. Operation of method 1300 can be implemented by a UE 115 or its components as described herein. For example, operation of method 1300 can be performed by a reference... Figures 6 to 9 The described communication manager is used to perform this. In some examples, the UE can execute a set of instructions to control the UE's functional elements to perform the functions described below. Alternatively or concurrently, the UE can use dedicated hardware to perform aspects of the functions described below.

[0179] At point 1305, the UE can transmit a directional positioning reference signal via a beamset. Operation at point 1305 can be performed according to the method described herein. In some examples, aspects of operation at point 1305 can be determined by, as in the reference... Figures 6 to 9 The reference signal component described is used for execution.

[0180] At 1310, the UE can receive a broadcast positioning reference signal from the first radio device in response to the reception of a directional positioning reference signal at the first radio device via one or more beams in the beam set. The operation of 1310 can be performed according to the method described herein. In some examples, aspects of the operation of 1310 can be determined by reference to... Figures 6 to 9 The reference signal component described is used for execution.

[0181] At 1315, the UE may send a report to the first radio device including timing and directionality reports associated with the transmission of directional positioning reference signals and the reception of broadcast positioning reference signals at the second radio device. The operation of 1315 can be performed according to the methods described herein. In some examples, aspects of the operation of 1315 may be determined by reference to... Figures 6 to 9 The described reporting component is used to perform this.

[0182] At 1320, the UE may, in response to receiving a report at the first radio device, receive beam-specific measurement information associated with one or more beams in the beam set from the first radio device. The beam-specific measurement information may include a reference signal received power value for each of the one or more beams associated with a directional positioning reference signal. In some aspects, the beam-specific measurement information may include a rating associated with at least the reference signal received power value for each of the one or more beams. Operation of 1320 may be performed according to the methods described herein. In some examples, aspects of the operation of 1320 may be determined by, as referenced... Figures 6 to 9 The described measurement components are used to perform this.

[0183] At 1325, the UE can transmit an indication of one or more beams based on received beam-specific measurement information. Operation of 1325 can be performed according to the methods described herein. In some examples, aspects of operation of 1325 can be derived from, as referenced... Figures 6 to 9 The beamforming components described are used to perform this.

[0184] At 1330, the UE can communicate with the first radio device using one or more beams based on reported and beam-specific measurement information. Operation of 1330 can be performed according to the methods described herein. In some examples, aspects of operation of 1330 can be derived from, as referenced... Figures 6 to 9 The beamforming components described are used to perform this.

[0185] It should be noted that the methods described in this paper describe possible implementations, and the operations and steps can be rearranged or otherwise modified, and other implementations are possible. Furthermore, aspects from two or more methods can be combined.

[0186] The following examples are given as illustrations. Aspects of the following examples may be combined with aspects or embodiments shown or discussed in conjunction with the accompanying drawings or elsewhere herein.

[0187] Aspect 1: A method for wireless communication at a first wireless device, comprising: receiving a directional positioning reference signal via one or more beams in a beamset; transmitting a broadcast positioning reference signal in response to the reception of the directional positioning reference signal; receiving from a second wireless device a report including timing and directionality associated with the transmission of the directional positioning reference signal and the reception of the broadcast positioning reference signal at the second wireless device; transmitting beam-specific measurement information associated with one or more beams in the beamset to the second wireless device in response to the reception of the report; and communicating with the second wireless device using one or more beams, at least in part, based on the report and the beam-specific measurement information.

[0188] Aspect 2: The method according to aspect 1 further includes: determining a reference signal received power value for each of the one or more beams based at least in part on the reception of a directional positioning reference signal through each of the one or more beams; and assigning a class to each of the one or more beams based at least in part on the corresponding reference signal received power value determined for each of the one or more beams.

[0189] Aspect 3: The method according to aspect 2 further includes: transmitting at least one of a reference signal received power value or an assigned level determined for at least one of one or more beams.

[0190] Aspect 4: The method according to any one of aspects 1 to 3 further includes: transmitting at least one of a time instance and a direction associated with the reception of a directional positioning reference signal via one or more beams.

[0191] Aspect 5: The method according to any one of aspects 1 to 4 further includes: selecting a beam in one or more beams based at least in part on a reference signal received power value of one or more beams; and transmitting at least one of a beam index set or beam pattern associated with each of the one or more beams.

[0192] Aspect 6: The method according to any one of aspects 1 to 5 further includes: receiving an indication of a beam in one or more beams based at least in part on transmitted beam-specific measurement information.

[0193] Aspect 7: The method according to any one of aspects 1 to 6 further includes: receiving at least one of a time instance or direction associated with the transmission of a directional positioning reference signal by the second wireless device via one or more beams; and receiving at least one of a time instance or direction associated with the reception of a broadcast positioning reference signal at the second wireless device.

[0194] Aspect 8: The method according to any one of Aspects 1 to 7, wherein the first wireless device includes a non-anchor device in the RTT positioning scheme; and the second wireless device includes an anchor device in the RTT positioning scheme.

[0195] Aspect 9: The method according to any one of Aspects 1 to 8, wherein the first wireless device includes a non-anchor device in the RTT positioning scheme; and the second wireless device includes another non-anchor device in the RTT positioning scheme.

[0196] Aspect 10: The method according to any one of Aspects 1 to 9, wherein the second wireless device includes an RSU in an RTT positioning scheme.

[0197] Aspect 11: A method for wireless communication at a second wireless device, comprising: transmitting a directional positioning reference signal via a beam set; receiving a broadcast positioning reference signal from the first wireless device in response to receiving the directional positioning reference signal at the first wireless device via one or more beams in the beam set; transmitting to the first wireless device a report including timing and directionality associated with the transmission of the directional positioning reference signal and the reception of the broadcast positioning reference signal at the second wireless device; receiving beam-specific measurement information associated with one or more beams in the beam set from the first wireless device in response to receiving the report; and communicating with the first wireless device using one or more beams, at least in part, based on the report and the beam-specific measurement information.

[0198] Aspect 12: The method according to aspect 11, wherein the beam-specific measurement information includes at least one of the following: a reference signal received power value for each of one or more beams associated with a directional positioning reference signal; or a rating associated with each of one or more beams with at least a reference signal received power value.

[0199] Aspect 13: The method according to any one of Aspects 11 to 12, wherein the beam-specific measurement information further includes at least one of a time instance or direction associated with a directional positioning reference signal received by the first wireless device via one or more beams.

[0200] Aspect 14: The method according to any one of aspects 11 to 13 further includes: receiving at least one of a set of beam indices or beam patterns associated with each of the one or more beams.

[0201] Aspect 15: The method according to any one of aspects 11 to 14 further includes: transmitting an indication of a beam in one or more beams based at least in part on received beam-specific measurement information.

[0202] Aspect 16: The method according to any one of aspects 11 to 15 further includes: transmitting at least one of a time instance or direction associated with transmitting a directional positioning reference signal via one or more beams; and transmitting at least one of a time instance or direction associated with receiving a broadcast positioning reference signal at a second wireless device.

[0203] Aspect 17: The method according to any one of Aspects 11 to 16, wherein the first wireless device includes a non-anchor device in the RTT positioning scheme; and the second wireless device includes an anchor device in the RTT positioning scheme.

[0204] Aspect 18: The method according to any one of Aspects 11 to 17, wherein the first wireless device includes a non-anchor device in the RTT positioning scheme; and the second wireless device includes another non-anchor device in the RTT positioning scheme.

[0205] Aspect 19: The method according to any one of Aspects 11 to 18, wherein the second wireless device includes an RSU in an RTT positioning scheme.

[0206] Aspect 20: An apparatus for wireless communication at a first wireless device, comprising one or more transceivers, one or more memories, and one or more processors electrically coupled to the one or more memories and the one or more transceivers; and one or more processors configured to perform the method according to any one of aspects 1 to 10.

[0207] Aspect 21: An apparatus for wireless communication at a first wireless device, comprising at least one component for performing the method according to any one of aspects 1 to 10.

[0208] Aspect 22: A non-transitory computer-readable medium storing code for wireless communication at a first wireless device, the code including instructions executable by a processor to perform the method according to any one of aspects 1 to 10.

[0209] Aspect 23: An apparatus for wireless communication at a second wireless device, comprising one or more transceivers, one or more memories, and one or more processors electrically coupled to the one or more memories and the one or more transceivers; and one or more processors configured to perform the method according to any one of aspects 11 to 19.

[0210] Aspect 24: An apparatus for wireless communication at a second wireless device, comprising at least one component for performing the method according to any one of aspects 11 to 19.

[0211] Aspect 25: A non-transitory computer-readable medium storing code for wireless communication at a second wireless device, the code including instructions executable by a processor to perform the method according to any one of aspects 11 to 19.

[0212] While aspects of LTE, LTE-A, LTE-A Pro, or NR systems have been described for illustrative purposes, and the terms LTE, LTE-A, LTE-A Pro, or NR are used extensively in the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described can be applied to a variety of other wireless communication systems, such as Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0213] The information and signals described herein can be represented using any of a variety of different techniques and skills. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be mentioned throughout this specification can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or light particles, or any combination thereof.

[0214] The various illustrative boxes and modules described in connection with the disclosure herein can be implemented or executed using a general-purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware component, or any combination thereof designed to perform the functions described herein. The general-purpose processor may be a microprocessor, while alternatively, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration).

[0215] The functionality described herein can be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functionality can be stored as one or more instructions or code on or transmitted through a computer-readable medium. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functionality described herein can be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination thereof. Features implementing the functionality can also be physically located in various locations, including being distributed such that different parts of the functionality are implemented at different physical locations.

[0216] Computer-readable media include both non-transitory computer storage media and communication media. Communication media includes any medium that facilitates the transfer of a computer program from one place to another. Non-transitory storage media can be any available medium that can be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media can include RAM, ROM, electrically erasable programmable read-only memory (EEPROM), flash memory, compressed optical disc (CD) ROM or other optical disc storage, disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code components in the form of instructions or data structures, and that can be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. Furthermore, any connection is appropriately referred to as computer-readable media. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable media. The disks and optical discs used in this article include CDs, laser discs, optical discs, DVDs, floppy disks, and Blu-ray discs, where disks typically reproduce data magnetically, while optical discs reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media.

[0217] As used herein (including in the claims), the word "or" as used in a list of items (e.g., a list of items ending with a phrase such as "at least one of..." or "one or more of...") indicates an inclusive list, such that a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Furthermore, as used herein, the phrase "based on" should not be construed as a reference to a closed set of conditions. For example, an exemplary step described as "based on condition A" may be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "at least partially based on".

[0218] In the accompanying drawings, similar components or features may have the same reference numerals. Furthermore, various components of the same type can be distinguished by adding a dash and a second reference numeral to differentiate similar components after the reference numeral. If only the first reference numeral is used in the specification, the description applies to any of the similar components having the same first reference numeral, without considering the second or other subsequent reference numerals.

[0219] The description herein, illustrated with reference to the accompanying drawings, describes an example configuration and does not represent all possible examples or all examples within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration," and not "preferred" or "superior to other examples." The detailed description includes specific details intended to provide an understanding of the techniques described. However, these techniques can be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concept of the described examples.

[0220] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other variations without departing from the scope of the disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be given the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. An apparatus for wireless communication at a first wireless device, comprising: One or more transceivers; One or more memory units; as well as One or more processors, electrically coupled to the one or more memories and the one or more transceivers, the one or more processors being configured to: The directional positioning reference signal is received via one or more beams in the beam-focused array through the one or more transceivers. In response to receiving the orientation and positioning reference signal, a broadcast positioning reference signal is transmitted via the one or more transceivers; Reports on timing and directionality associated with the transmission of the directional positioning reference signal and the reception of the broadcast positioning reference signal at the second wireless device are received from the second wireless device via the one or more transceivers. In response to receiving the report, beam-specific measurement information associated with the one or more beams in the beam set is transmitted to the second wireless device via the one or more transceivers. as well as Based at least in part on the report and the beam-specific measurement information, the second wireless device communicates using a beam from one or more of the beams.

2. The apparatus of claim 1, wherein the one or more processors are further configured to: At least in part, based on the reception of the orientation reference signal through each of the one or more beams, a reference signal reception power value is determined for each of the one or more beams; and A class is assigned to each of the one or more beams, at least in part, based on the corresponding reference signal received power value determined for the one or more beams.

3. The apparatus of claim 2, wherein the one or more processors configured to transmit beam-specific measurement information are further configured to transmit at least one of a reference signal received power value or an assigned level determined for at least one of the one or more beams.

4. The apparatus of claim 1, wherein the one or more processors configured to transmit the beam-specific measurement information are further configured to: Transmit at least one of the time instance and direction associated with the reception of the orientation and positioning reference signal via the one or more beams.

5. The apparatus of claim 1, wherein the one or more processors are further configured to: The beam in the one or more beams is selected at least in part based on the reference signal received power value of the one or more beams; The one or more processors configured to transmit beam-specific measurement information are also configured to transmit at least one of a set of beam indexes or beam patterns associated with each of the one or more beams.

6. The apparatus of claim 1, wherein the one or more processors are further configured to: The indication of the beam in the one or more beams is received via the one or more transceivers, at least in part, based on the transmission of beam-specific measurement information.

7. The apparatus of claim 1, wherein the one or more processors are further configured to: Receive, via the one or more transceivers, at least one of a time instance or direction associated with the transmission of the directional positioning reference signal by the second wireless device via the one or more beams; and At least one of a time instance or direction associated with the reception of the broadcast positioning reference signal at the second wireless device is received via the one or more transceivers.

8. The apparatus according to claim 1, wherein: The first wireless device includes a non-anchored device in a round-trip time (RTT) positioning scheme; and The second wireless device includes the anchor device in the RTT positioning scheme.

9. The apparatus according to claim 1, wherein: The first wireless device includes a non-anchored device in a round-trip time (RTT) positioning scheme; and The second wireless device includes another non-anchor device in the RTT positioning scheme.

10. The apparatus of claim 1, wherein the second wireless device comprises a roadside unit (RSU) in a round-trip time (RTT) positioning scheme.

11. An apparatus for wireless communication at a second wireless device, comprising: One or more transceivers; One or more memory units; as well as One or more processors, electrically coupled to the one or more memories and the one or more transceivers, the one or more processors being configured to: The directional positioning reference signal is transmitted via the one or more transceivers through a beam set; In response to the reception of the orientation positioning reference signal at the first wireless device via one or more beams in the beam set, a broadcast positioning reference signal is received from the first wireless device via the one or more transceivers. The first wireless device is sent a report on timing and directionality associated with the transmission of the directional positioning reference signal and the reception of the broadcast positioning reference signal at the second wireless device via the one or more transceivers. In response to the receipt of the report at the first wireless device, beam-specific measurement information associated with the one or more beams in the beam set is received from the first wireless device via the one or more transceivers. as well as Based at least in part on the report and the beam-specific measurement information, the device communicates with the first wireless device using one or more of the beams.

12. The apparatus of claim 11, wherein the beam-specific measurement information includes at least one of the following: The reference signal received power value of each of the one or more beams associated with the directional positioning reference signal; or A rating associated with each of the one or more beams, relating to at least the received power value of the reference signal.

13. The apparatus of claim 11, wherein the beam-specific measurement information further includes at least one of a time instance or direction associated with the orientation positioning reference signal received by the first wireless device via the one or more beams.

14. The apparatus of claim 11, wherein the one or more processors configured to receive the beam-specific measurement information are further configured to receive at least one of a set of beam indices or beam patterns associated with each of the one or more beams.

15. The apparatus of claim 11, wherein the one or more processors are further configured to: Instructions for the beam in the one or more beams are transmitted via the one or more transceivers, at least in part based on receiving beam-specific measurement information.

16. The apparatus of claim 11, wherein the one or more processors configured to send the report are further configured to: Sending at least one of the time instances or directions associated with transmitting the orientation reference signal via the one or more beams; and Send at least one of the time instances or directions associated with the reception of the broadcast positioning reference signal at the second wireless device.

17. The apparatus according to claim 11, wherein: The first wireless device includes a non-anchored device in a round-trip time (RTT) positioning scheme; and The second wireless device includes the anchor device in the RTT positioning scheme.

18. The apparatus according to claim 11, wherein: The first wireless device includes a non-anchored device in a round-trip time (RTT) positioning scheme; and The second wireless device includes another non-anchor device in the RTT positioning scheme.

19. The apparatus of claim 11, wherein the second wireless device comprises a roadside unit (RSU) in a round-trip time (RTT) positioning scheme.

20. A method for wireless communication at a first wireless device, comprising: The directional positioning reference signal is received by one or more beams in the beam set; In response to receiving the orientation and positioning reference signal, a broadcast positioning reference signal is transmitted; Receive from the second wireless device a timing and directionality report associated with the transmission of the directional positioning reference signal and the reception of the broadcast positioning reference signal at the second wireless device; In response to receiving the report, beam-specific measurement information associated with one or more beams in the beam set is sent to the second wireless device; as well as Based at least in part on the report and the beam-specific measurement information, the second wireless device communicates using a beam from one or more of the beams.

21. The method of claim 20, further comprising: The reference signal received power value is determined for each of the one or more beams, at least in part, based on the reception of the orientation and positioning reference signal through each of the one or more beams; as well as A class is assigned to each of the one or more beams, at least in part, based on the reference signal received power value determined for the one or more beams.

22. The method of claim 21, wherein transmitting the beam-specific measurement information comprises: Transmit at least one of the reference signal received power values ​​or assigned levels determined for at least one of the one or more beams.

23. The method of claim 20, wherein transmitting the beam-specific measurement information comprises: Transmit at least one of the time instances or directions associated with the reception of the directional positioning reference signal via the one or more beams.

24. The method of claim 20, further comprising: The beam in the one or more beams is selected at least in part based on the reference signal received power value of the one or more beams; The transmission of the beam-specific measurement information includes transmitting at least one of the beam index set or beam patterns associated with each of the one or more beams.

25. The method of claim 20, further comprising: The indication of one or more beams is received, at least in part, based on the transmission of the beam-specific measurement information.

26. The method of claim 20, wherein receiving the report comprises: Receive at least one of the time instances or directions associated with the transmission of the directional positioning reference signal by the second wireless device via the one or more beams; as well as Receiving at least one of the time instances or directions associated with the reception of the broadcast positioning reference signal at the second wireless device.

27. The method of claim 20, wherein: The first wireless device includes a non-anchored device in a round-trip time (RTT) positioning scheme; and The second wireless device includes the anchor device in the RTT positioning scheme.

28. The method of claim 20, wherein: The first wireless device includes a non-anchored device in a round-trip time (RTT) positioning scheme; and The second wireless device includes another non-anchor device in the RTT positioning scheme.

29. The method of claim 20, wherein the second wireless device comprises a roadside unit (RSU) in a round-trip time (RTT) positioning scheme.

30. A method for wireless communication at a second wireless device, comprising: Send directional positioning reference signals through beamsets; In response to the reception of the orientation positioning reference signal at a first wireless device via one or more beams in the beam set, a broadcast positioning reference signal is received from the first wireless device. Send to the first wireless device a timing and directionality report associated with the transmission of the directional positioning reference signal and the reception of the broadcast positioning reference signal at the second wireless device; In response to receiving the report at the first wireless device, beam-specific measurement information associated with one or more beams in the beam set is received from the first wireless device. as well as Based at least in part on the report and the beam-specific measurement information, the device communicates with the first wireless device using one or more of the beams.

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