PRS and SRS aggregation in positioning transmission

Abstract

Apparatuses and methods for PRS / SRS aggregation in positioning transmission are described. An apparatus is configured to receive an aggregation configuration indicating SRS resources for aggregation in UL transmission, and to transmit pilot signals via the SRS resources based on the aggregation configuration. These SRS resources are aggregated with coherence attributes in the same set of OFDM symbols, and at least two SRS resources are associated with the same path loss parameter, transmit power spectral density, spatial relationship reference signal, comb size, and / or time domain characteristic. Another apparatus is configured to receive an aggregation configuration indicating PRS resources to be aggregated in a DL transmission, and to receive pilot signals from a network entity via these PRS resources. The PRS resources are aggregated with coherence attributes. Another PRS resource is associated with a TxTEG identifier based on the assistance information indicating that the PRS resource is assigned with the TxTEG identifier.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of Greek patent application serial number 20230100108, entitled “PRS AND SRS AGGREGATION IN POSITIONING TRANSMISSIONS,” filed on February 13, 2023, which is expressly incorporated herein by reference in its entirety. Technical Field

[0003] The present disclosure relates generally to communication systems and, more particularly, to wireless communications utilizing positioning. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple-access technologies include code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), single-carrier frequency division multiple access (SC-FDMA), and time division synchronous code division multiple access (TD-SCDMA).

[0005] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at the city, national, regional, and even global levels. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of the continued evolution of mobile broadband, promulgated by the 3rd Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., for the Internet of Things (IoT)), and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable low-latency communications (URLLC). Certain aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. Further improvements to 5G NR technology are needed. In addition, these improvements may also be applicable to other multiple access technologies and telecommunication standards that adopt these technologies. Summary of the Invention

[0006] The following presents a simplified summary of one or more aspects in order to provide a basic understanding of these aspects. This summary is not an extensive overview of all contemplated aspects. This summary does not identify key or critical elements of all aspects, nor does it delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that will be presented later.

[0007] In one aspect of the present disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus is configured to receive an aggregation configuration from a network node indicating at least two sounding reference signal (SRS) resources to be aggregated in an uplink (UL) transmission. The apparatus is further configured to transmit at least one pilot signal via the at least two SRS resources based on the aggregation configuration, wherein the at least two SRS resources are aggregated with a coherence property in the same set of orthogonal frequency division multiplexing (OFDM) symbols, and wherein the at least two SRS resources are associated with at least one of the following: a same path loss parameter, a same transmit power spectral density, a same spatial relation reference signal, a same comb size, and / or at least one same time domain characteristic.

[0008] In this aspect, the method includes receiving an aggregation configuration from a network node indicating at least two SRS resources to be aggregated in an UL transmission. The method also includes transmitting at least one pilot signal via the at least two SRS resources based on the aggregation configuration, wherein the at least two SRS resources are aggregated with a coherence property in a same set of OFDM symbols, wherein the at least two SRS resources are associated with at least one of the following: a same path loss parameter, a same transmit power spectral density, a same spatial relation reference signal, a same comb size, and / or at least one same time domain characteristic.

[0009] In another aspect of the present disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus is configured to receive, from a network node, an aggregation configuration indicating at least two positioning reference signal (PRS) resources to be aggregated in a downlink (DL) transmission. The apparatus is further configured to receive, based on the aggregation configuration, at least one pilot signal from a network entity via the at least two PRS resources, wherein the at least two PRS resources are aggregated with a coherence property, and wherein, based on assistance information indicating that a first PRS resource of the at least two PRS resources is assigned to a transmit timing error group (TxTEG) identifier, a second PRS resource of the at least two PRS resources is associated with the TxTEG identifier if the TxTEG identifier is not assigned to the TxTEG identifier.

[0010] In this aspect, the method includes receiving, from a network node, an aggregation configuration indicating at least two PRS resources to be aggregated in a DL transmission. The method further includes receiving, based on the aggregation configuration, at least one pilot signal from a network entity via the at least two PRS resources, wherein the at least two PRS resources are aggregated with a coherence property, and wherein, based on auxiliary information indicating that a first PRS resource of the at least two PRS resources is assigned to a TxTEG identifier, in a case where the TxTEG identifier is not assigned to a second PRS resource of the at least two PRS resources, the second PRS resource is associated with the TxTEG identifier.

[0011] To achieve the foregoing and related ends, one or more aspects may include the features fully described below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail some illustrative features of one or more aspects. However, these features are indicative of only some of the various ways in which the principles of the various aspects may be employed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a diagram illustrating an example of a wireless communication system and an access network.

[0013] FIG. 2A is a diagram illustrating an example of a first frame according to various aspects of the present disclosure.

[0014] 2B is a diagram illustrating an example of downlink (DL) channels within a subframe according to various aspects of the present disclosure.

[0015] FIG2C is a diagram illustrating an example of a second frame according to various aspects of the present disclosure.

[0016] 2D is a diagram illustrating an example of uplink (UL) channels within a subframe according to various aspects of the present disclosure.

[0017] Figure 3 is a diagram illustrating an example of a base station and a user equipment (UE) in an access network.

[0018] Figure 4 is a diagram illustrating an example of UE positioning based on reference signal measurement.

[0019] Figure 5 Shown are examples of call flow diagrams and configurations for wireless communications according to various aspects of the present disclosure.

[0020] Figure 6 Shown are examples of configurations for wireless communications according to various aspects of the present disclosure.

[0021] Figure 7 Shown are example block diagrams and configurations for wireless communications according to various aspects of the present disclosure.

[0022] Figure 8

[0014] Example configurations for wireless communications according to various aspects of the present disclosure are shown.

[0023] Figure 9 is a call flow diagram for wireless communication according to various aspects of the present disclosure.

[0024] Figure 10 Example configurations of coherence status indication and transmit timing error margin for SRS / PRS resources according to various aspects of the present disclosure are shown.

[0025] Figure 11 is a call flow diagram for wireless communication according to various aspects of the present disclosure.

[0026] Figure 12 is a flow chart of a method of wireless communication according to various aspects of the present disclosure.

[0027] Figure 13 is a flow chart of a method of wireless communication according to various aspects of the present disclosure.

[0028] Figure 14 is a flow chart of a method of wireless communication according to various aspects of the present disclosure.

[0029] Figure 15 is a flow chart of a method of wireless communication according to various aspects of the present disclosure.

[0030] Figure 16 are diagrams illustrating examples of hardware implementations for example apparatuses and / or network entities.

[0031] Figure 17 is a diagram illustrating an example of a hardware implementation for an example network entity.

[0032] Figure 18 is a diagram illustrating an example of a hardware implementation for an example network entity. DETAILED DESCRIPTION

[0033] Wireless communication networks, such as 5G NR networks, can implement positioning measurements and operations to locate wireless devices. For example, the wireless communication network can utilize pilot signals transmitted via reference signal resources, such as sounding reference signal (SRS) resources and / or positioning reference signal (PRS) resources. These reference signal resources can have characteristics such as a transmit timing error group (TxTEG) identifier, a transmit timing error margin, and a transmit timing error. To improve the efficiency of positioning measurements and operations, reference signal resources can be aggregated for transmission.

[0034] However, the coherence of the transmission of aggregated reference signal resources may affect the accuracy of positioning information and operations. The UE may not be aware of the loss of coherence of the aggregated reference signal resources until after transmission via the aggregated reference signal resources has occurred. As a result, the timing and positioning accuracy on the network side may be affected. In addition, the signaling overhead for reference signal resource characteristics (e.g., TxTEG identifier, transmit timing error margin, transmit timing error, etc.) may include additional processing (e.g., encoding / decoding) and power consumption for both the transmitter and receiver.

[0035] Various aspects generally relate to wireless communication systems and positioning operations for wireless devices. Some aspects more specifically relate to aggregation of SRS resources and PRS resources in positioning transmissions. In one example, a UE may receive an aggregation configuration indicating at least two SRS resources to be aggregated in an UL transmission and may transmit at least one pilot signal via the at least two SRS resources based on the aggregation configuration. The at least two SRS resources may be aggregated with a coherence property in the same set of OFDM symbols, and the at least two SRS resources may be associated with at least one of the following: the same path loss parameter, the same transmit power spectral density, the same spatial relation reference signal, the same comb size, and / or at least one same time domain characteristic. The same path loss parameter may be associated with a cross-component carrier (CC) path loss reference indication, and the at least two SRS resources may be transmitted together with the cross-CC path loss reference indication, the same path loss parameter may be associated with the CC with the lowest CC index, and / or the same path loss parameter may be associated with the CC that is the Pcell of the UE. In another example, the UE may receive an aggregation configuration indicating at least two PRS resources to be aggregated in a DL transmission from a network node, and may receive at least one pilot signal from a network entity (e.g., a location management function (LMF)) via the at least two PRS resources based on the aggregation configuration. The at least two PRS resources may be aggregated based on a coherence property, and based on the auxiliary information indicating that a first PRS resource of the at least two PRS resources is assigned to a TxTEG identifier, a second PRS resource of the at least two PRS resources may be associated with the TxTEG identifier if the TxTEG identifier is not assigned to the second PRS resource.

[0036] Certain aspects of the subject matter described in this disclosure can be implemented to achieve one or more of the following potential advantages. In some examples, by reporting coherence status information via indications of aggregated reference signal resources and associating TxTEG identifiers and timing error margins to unassigned or unlabeled reference signal resources, the described techniques can be used to more efficiently transmit signals on reference signal resources, thereby improving bandwidth and supporting cross-CC path loss reference indication for intra-band aggregation while reducing signaling overhead for TxTEG identifiers and timing error margins, and providing coherence status information to network nodes (e.g., base stations) and network entities (e.g., LMFs) via indications of aggregated reference signal resources that maintain and / or lose coherence. Additionally, the described techniques may be used to improve the accuracy of timing measurements / reporting by providing configuration of improved granularity for timing reporting (e.g., for receive-transmit time difference), and may be used to improve reference signal time difference (RSTD) measurements and UE receive-transmit (RxTx) time difference measurements and reduce signaling overhead by extending the association of characteristics of aggregated resources to aggregation in positioning frequency layers (PFLs).

[0037] The detailed description set forth below in conjunction with the accompanying drawings is a description of various configurations and does not represent the only configurations in which the concepts described herein may be practiced. The detailed description includes specific details to provide a thorough understanding of the various concepts. However, these concepts may be practiced without these specific details. In some cases, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.

[0038] Several aspects of telecommunications systems are presented with reference to various apparatus and methods. These apparatus and methods are described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using electronic hardware, computer software, or any combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0039] As an example, an element, or any part of an element, or any combination of elements can be implemented as a "processing system" that includes one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, systems on a chip (SoCs), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gating logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionalities described throughout this disclosure. One or more processors in a processing system can execute software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other terms, software should be broadly interpreted to mean instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, or any combination thereof.

[0040] Thus, in one or more example aspects, implementations, and / or use cases, the functionality described may be implemented in hardware, software, or any combination thereof. If implemented in software, the functionality may be stored or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media. A storage medium can be any available medium that can be accessed by a computer. By way of example, such computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of these types of computer-readable media, or any other medium that can be used to store computer-executable code in the form of instructions or data structures that can be accessed by a computer.

[0041] While aspects, implementations, and / or use cases are described herein through the lens of a few examples, additional or different aspects, implementations, and / or use cases may arise in many different arrangements and scenarios. The aspects, implementations, and / or use cases described herein may be implemented across many different platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, the aspects, implementations, and / or use cases may arise via integrated chip implementations and other non-module component-based devices (e.g., end-user devices, vehicles, communications equipment, computing devices, industrial equipment, retail / purchase equipment, medical devices, artificial intelligence (AI)-enabled devices, etc.). While some examples may or may not be specifically targeted at use cases or applications, the examples described may have broad applicability. The aspects, implementations, and / or use cases may range from chip-level or modular components to non-modular, non-chip-level implementations, and further to aggregated, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more of the techniques described herein. In some practical settings, devices incorporating the described aspects and features may also include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals necessarily involve multiple components for both analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders / summers, etc.). The techniques described herein can be practiced in a wide variety of devices of various sizes, shapes, and configurations, including chip-level components, systems, distributed arrangements, aggregated or disaggregated components, end-user devices, and the like.

[0042] The deployment of a communication system (such as a 5G NR system) can be arranged in a variety of ways using various components or parts. In a 5G NR system or network, a network node, a network entity, a mobility element of the network, a radio access network (RAN) node, a core network node, a network element, or network equipment (such as a base station (BS)), or one or more units (or one or more components) performing base station functionality can be implemented in a converged or disaggregated architecture. For example, a base station (such as a node B (NB), an evolved NB (eNB), an NR base station, a 5G NB, an access point (AP), a transmit / receive point (TRP), or a cell) can be implemented as a converged base station (also known as a standalone base station or a monolithic base station) or a disaggregated base station.

[0043] A converged base station may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node. A disaggregated base station may be configured to utilize a protocol stack that is physically or logically distributed across two or more units, such as one or more central or centralized units (CUs), one or more distributed units (DUs), or one or more radio units (RUs). In some aspects, a CU may be implemented within a RAN node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed across one or more other RAN nodes. A DU may be implemented to communicate with one or more RUs. Each of the CU, DU, and RU may be implemented as a virtual unit, namely a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU).

[0044] Base station operation or network design can take into account the aggregated nature of base station functionality. For example, a disaggregated base station can be used in an integrated access backhaul (IAB) network, an open radio access network (O-RAN (a network configuration such as that promoted by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)). Disaggregation can include distributing functionality across two or more units at various physical locations, as well as virtually distributing the functionality of at least one unit, which can enable flexibility in network design. The various units of a disaggregated base station or disaggregated RAN architecture can be configured for wired or wireless communication with at least one other unit.

[0045] Figure 1 FIG100 is a diagram illustrating an example of a wireless communication system and access network. The illustrated wireless communication system includes a disaggregated base station architecture. The disaggregated base station architecture may include one or more CUs 110, which may communicate directly with a core network 120 via a backhaul link or indirectly with the core network 120 through one or more disaggregated base station units, such as a near real-time (near-RT) RAN intelligent controller (RIC) 125 via an E2 link, a non-real-time (non-RT) RIC 115 associated with a service management and orchestration (SMO) framework 105, or both. The CUs 110 may communicate with one or more DUs 130 via corresponding midhaul links, such as the F1 interface. The DUs 130 may communicate with one or more RUs 140 via corresponding fronthaul links. The RUs 140 may communicate with corresponding UEs 104 via one or more radio frequency (RF) access links. In some implementations, a UE 104 may be served simultaneously by multiple RUs 140.

[0046] Each of the units (i.e., CU 110, DU 130, RU 140, as well as near-RT RIC 125, non-RT RIC 115, and SMO framework 105) may include or be coupled to one or more interfaces configured to receive or transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium. Each of the units, or an associated processor or controller that provides instructions to the communication interfaces of these units, may be configured to communicate with one or more of the other units via the transmission medium. For example, these units may include a wired interface configured to receive signals or transmit signals to one or more of the other units via the wired transmission medium. Additionally, these units may include a wireless interface that may include a receiver, transmitter, or transceiver (such as an RF transceiver) configured to receive signals or transmit signals to one or more of the other units via the wireless transmission medium.

[0047] In some aspects, the CU 110 may host one or more higher-layer control functions. Such control functions may include radio resource control (RRC), packet data convergence protocol (PDCP), service data adaptation protocol (SDAP), and the like. Each control function may be implemented using an interface configured to communicate signals with other control functions hosted by the CU 110. The CU 110 may be configured to handle user plane functionality (i.e., central unit-user plane (CU-UP)), control plane functionality (i.e., central unit-control plane (CU-CP)), or a combination thereof. In some implementations, the CU 110 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP units may communicate bidirectionally with the CU-CP units via an interface, such as the E1 interface. As needed, the CU 110 may be implemented to communicate with the DU 130 for network control and signaling.

[0048] The DU 130 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 140. In some aspects, the DU 130 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more higher physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc.), at least in part according to a functional split (such as those defined by 3GPP). In some aspects, the DU 130 may also host one or more lower PHY layers. Each layer (or module) may be implemented using an interface configured to communicate signals with other layers (and modules) hosted by the DU 130 or with control functions hosted by the CU 110.

[0049] Lower layer functionality may be implemented by one or more RUs 140. In some deployments, a RU 140 controlled by a DU 130 may correspond to a logical node that hosts RF processing functionality or low-PHY layer functionality (such as performing fast Fourier transforms (FFTs), inverse FFTs (iFFTs), digital beamforming, physical random access channel (PRACH) extraction and filtering), or both, based at least in part on a functional split (such as a lower layer functional split). In this architecture, the RU 140 may be implemented to handle over-the-air (OTA) communications with one or more UEs 104. In some implementations, real-time and non-real-time aspects of control and user plane communications with the RU 140 may be controlled by the corresponding DU 130. In some scenarios, this configuration may enable the implementation of the DU 130 and CU 110 in a cloud-based RAN architecture, such as a vRAN architecture.

[0050] The SMO framework 105 can be configured to support RAN deployment and provisioning of both non-virtualized and virtualized network elements. For non-virtualized network elements, the SMO framework 105 can be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which can be managed via an operations and maintenance interface (such as the O1 interface). For virtualized network elements, the SMO framework 105 can be configured to interact with a cloud computing platform (such as Open Cloud (O-Cloud) 190) to perform network element lifecycle management (such as instantiating virtualized network elements) via cloud computing platform interfaces (such as the O2 interface). Such virtualized network elements may include, but are not limited to, the CU 110, DU 130, RU 140, and near-RT RIC 125. In some implementations, the SMO framework 105 can communicate with hardware aspects of the 4G RAN (such as the Open eNB (O-eNB) 111) via the O1 interface. Additionally, in some implementations, the SMO framework 105 can communicate directly with one or more RUs 140 via the O1 interface. The SMO framework 105 may also include a non-RT RIC 115 configured to support the functionality of the SMO framework 105 .

[0051] The non-RT RIC 115 may be configured to include logic that enables non-real-time control and optimization of RAN elements and resources, artificial intelligence (AI) / machine learning (ML) (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 125. The non-RT RIC 115 may be coupled to or in communication with the near-RT RIC 125 (e.g., via an A1 interface). The near-RT RIC 125 may be configured to include logic that enables near-real-time control and optimization of RAN elements and resources through data collection and actions via an interface (e.g., via an E2 interface) that connects one or more CUs 110, one or more DUs 130, or both, and the O-eNB with the near-RT RIC 125.

[0052] In some implementations, to generate AI / ML models to be deployed in the near-RT RIC 125, the non-RT RIC 115 may receive parameters or external enrichment information from an external server. This information may be utilized by the near-RT RIC 125 and may be received from non-network data sources or from network functions at the SMO framework 105 or the non-RT RIC 115. In some examples, the non-RT RIC 115 or the near-RT RIC 125 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 115 may monitor long-term trends and patterns in performance and employ AI / ML models to execute corrective actions through the SMO framework 105 (such as via reconfiguration of O1) or by creating RAN management policies (such as A1 policies).

[0053] At least one of the CU 110, DU 130, and RU 140 may be referred to as a base station 102. Thus, base station 102 may include one or more of CU 110, DU 130, and RU 140 (each component is indicated by a dashed line to indicate that each component may or may not be included in base station 102). Base station 102 provides a UE 104 with access to core network 120. Base station 102 may include a macro cell (a high-power cellular base station) and / or a small cell (a low-power cellular base station). Small cells include femto cells, pico cells, and micro cells. A network that includes both small cells and macro cells may be referred to as a heterogeneous network. A heterogeneous network may also include a home evolved Node B (eNB) (HeNB), which may provide services to a restricted group known as a closed subscriber group (CSG). The communication link between RU 140 and UE 104 may include uplink (UL) (also known as reverse link) transmissions from UE 104 to RU 140 and / or downlink (DL) (also known as forward link) transmissions from RU 140 to UE 104. The communication link may utilize multiple-input, multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. The communication link may be over one or more carriers. Base station 102 / UE 104 may utilize spectrum with a bandwidth of up to Y MHz (e.g., 5 MHz, 10 MHz, 15 MHz, 20 MHz, 100 MHz, 400 MHz, etc.) for each carrier allocated in a carrier aggregation for transmission in each direction, totaling up to Yx MHz (x component carriers). These carriers may or may not be adjacent to each other. Carrier allocation may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL ​​compared to UL). Component carriers may include a primary component carrier and one or more secondary component carriers. The primary component carrier may be referred to as a primary cell (PCell) and the secondary component carrier may be referred to as a secondary cell (SCell).

[0054] Certain UEs 104 may communicate with each other using device-to-device (D2D) communication links 158. D2D communication links 158 may utilize DL / UL wireless wide area network (WWAN) spectrum. D2D communication links 158 may utilize one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). D2D communication may be accomplished via various wireless D2D communication systems, such as, for example, Bluetooth, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.

[0055] The wireless communication system may also include a Wi-Fi AP 150 that communicates with a UE 104 (also referred to as a Wi-Fi station (STA)) via a communication link 154, for example, in the 5 GHz unlicensed spectrum. When communicating in the unlicensed spectrum, the UE 104 / AP 150 may perform a clear channel assessment (CCA) to determine whether the channel is available before communicating.

[0056] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, and so on, based on frequency / wavelength. In 5G NR, two initial operating bands have been identified as frequency ranges designated FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). Although a portion of FR1 extends beyond 6 GHz, FR1 is often (interchangeably) referred to as the "sub-6 GHz" band in various documents and articles. A similar naming issue sometimes arises with FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, despite being distinct from the extremely high frequency (EHF) band (30 GHz to 300 GHz), which is designated as a "millimeter wave" band by the International Telecommunication Union (ITU).

[0057] Frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Recent 5G NR research has identified an operating band for these mid-band frequencies as frequency range designation FR3 (7.125 GHz to 24.25 GHz). Frequency bands falling within FR3 may inherit FR1 characteristics and / or FR2 characteristics, effectively extending the features of FR1 and / or FR2 to mid-band frequencies. Furthermore, higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR2-2 (52.6 GHz-71 GHz), FR4 (71 GHz-114.25 GHz), and FR5 (114.25 GHz-300 GHz). Each of these higher frequency bands falls within the EHF band.

[0058] With the above in mind, unless otherwise specified, if the term "sub-6 GHz" or the like is used herein, it may broadly refer to frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. Furthermore, unless otherwise specified, if the term "millimeter wave" or the like is used herein, it may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR2-2, and / or FR5, or may be within the EHF band.

[0059] Base station 102 and UE 104 may each include multiple antennas (such as antenna elements, antenna panels, and / or antenna arrays) to facilitate beamforming. Base station 102 may transmit beamformed signals 182 to UE 104 in one or more transmit directions. UE 104 may receive beamformed signals from base station 102 in one or more receive directions. UE 104 may also transmit beamformed signals 184 to base station 102 in one or more transmit directions. Base station 102 may receive beamformed signals from UE 104 in one or more receive directions. Base station 102 / UE 104 may perform beam training to determine the optimal receive and transmit directions for each of base station 102 / UE 104. The transmit and receive directions of base station 102 may or may not be the same. The transmit and receive directions of UE 104 may or may not be the same.

[0060] The base station 102 may include and / or be referred to as a gNB, Node B, eNB, access point, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), TRP, network node, network entity, network equipment, or some other suitable terminology. The base station 102 may be implemented as an integrated access and backhaul (IAB) node, a relay node, a sidelink node, a converged (monolithic) base station having a baseband unit (BBU) (including a CU and a DU) and a RU, or as a disaggregated base station including one or more of a CU, a DU, and / or a RU. A collection of base stations that may include disaggregated base stations and / or converged base stations may be referred to as a next generation (NG) RAN (NG-RAN).

[0061] The core network 120 may include an access and mobility management function (AMF) 161, a session management function (SMF) 162, a user plane function (UPF) 163, a unified data management (UDM) 164, one or more location servers 168, and other functional entities. The AMF 161 is a control node that handles signaling between the UE 104 and the core network 120. The AMF 161 supports registration management, connection management, mobility management, and other functions. The SMF 162 supports session management and other functions. The UPF 163 supports packet routing, packet forwarding, and other functions. The UDM 164 supports the generation of authentication and key agreement (AKA) credentials, user identity handling, access authorization, and subscription management. The one or more location servers 168 are exemplified as including a gateway mobile location center (GMLC) 165 and a location management function (LMF) 166. However, in general, the one or more location servers 168 may include one or more location / positioning servers, which may include one or more of the GMLC 165, LMF 166, Position Determination Entity (PDE), Serving Mobile Location Center (SMLC), Mobile Positioning Center (MPC), etc. The GMLC 165 and LMF 166 support UE location services. The GMLC 165 provides an interface for clients / applications (e.g., emergency services) to access UE positioning information. The LMF 166 receives measurements and assistance information from the NG-RAN and UE 104 via the AMF 161 to calculate the position of the UE 104. The NG-RAN may utilize one or more positioning methods to determine the position of the UE 104. Positioning the UE 104 may involve signal measurements, position estimates, and optional velocity calculations based on these measurements. Signal measurements may be performed by the UE 104 and / or the base station 102 serving the UE 104. The measured signals may be based on one or more of a satellite positioning system (SPS) 170 (e.g., one or more of a global navigation satellite system (GNSS), a global positioning system (GPS), a non-terrestrial network (NTN), or other satellite positioning / positioning systems), LTE signals, wireless local area network (WLAN) signals, Bluetooth signals, a terrestrial beacon system (TBS), sensor-based information (e.g., an atmospheric pressure sensor, a motion sensor), NR enhanced cell ID (NR E-CID) methods, NR signals (e.g., multi-round trip time (multi-RTT), DL angle of departure (DL-AoD), DL time difference of arrival (DL-TDOA), UL time difference of arrival (UL-TDOA), and UL angle of arrival (UL-AoA) positioning), and / or other systems / signals / sensors.

[0062] Examples of UE 104 include a cellular phone, a smartphone, a Session Initiation Protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., an MP3 player), a camera, a game console, a tablet, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor / actuator, a display, or any other similarly functional device. Some of UE 104 may be referred to as IoT devices (e.g., a parking meter, a gas pump, a toaster, a vehicle, a heart rate monitor, etc.). UE 104 may also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. In some scenarios, the term UE may also apply to one or more companion devices, such as in a device constellation arrangement. One or more of these devices may access the network collectively and / or individually.

[0063] Reference again Figure 1In certain aspects, the UE 104 may include an aggregation component 198 ("component 198") that may be configured to receive an aggregation configuration from a network node indicating at least two SRS resources to be aggregated in an UL transmission. Component 198 may be configured to transmit, based on the aggregation configuration, at least one pilot signal via the at least two SRS resources, wherein the at least two SRS resources are aggregated with a coherence property in a same set of OFDM symbols, wherein the at least two SRS resources are associated with at least one of the following: a same path loss parameter, a same transmit power spectral density, a same spatial relation reference signal, a same comb size, and / or at least one same time-domain characteristic. Component 198 may also be configured to transmit at least one additional pilot signal via additional instances of the at least two SRS resources. Component 198 may be configured to obtain a coherence indication indicating that the additional instances of the at least two SRS resources have a loss of coherence or that coherence is maintained. Component 198 may be configured to transmit a coherence status indication comprising information associated with a loss of coherence or a maintenance of coherence for the additional instances of the at least two SRS resources. Component 198 may be configured to transmit a TxTEG identifier assigned to a first SRS resource of at least two SRS resources, wherein a second SRS resource of the at least two SRS resources is associated with the TxTEG identifier if the TxTEG identifier is not assigned to the second SRS resource. In certain aspects, component 198 may be configured to receive an aggregation configuration from a network node indicating at least two PRS resources to be aggregated in a DL transmission. Component 198 may be configured to receive at least one pilot signal from a network entity via the at least two PRS resources based on the aggregation configuration, wherein the at least two PRS resources are aggregated with a coherence property, wherein a second PRS resource of the at least two PRS resources is associated with the TxTEG identifier if the TxTEG identifier is not assigned to the second PRS resource based on assistance information indicating that the first PRS resource of the at least two PRS resources is assigned to the TxTEG identifier. Component 198 may also be configured to process the first PRS resource and the second PRS resource according to the TxTEG identifier when the TxTEG identifier is not assigned to the second PRS resource of the at least two PRS resources. Component 198 may also be configured to transmit measurement information associated with at least one of a reference signal time difference measurement or a UE RxTx time difference measurement aggregated via at least two PFLs, wherein at least one of the reference signal time difference measurement or the UE RxTx time difference measurement is associated with the at least two PRS resources and wherein corresponding additional path information is aggregated via the at least two PFLs. In certain aspects, base station 102 may have an aggregation component 199 ("component 199") that may be configured to transmit, to a UE, an aggregation configuration indicating at least two SRS resources to be aggregated in an UL transmission.Component 199 may be configured to receive at least one pilot signal via at least two SRS resources based on an aggregation configuration, wherein the at least two SRS resources are aggregated in a same set of OFDM symbols with a coherence property, wherein the at least two SRS resources are associated with at least one of the following: a same path loss parameter, a same transmit power spectral density, a same spatial relation reference signal, a same comb size, and / or at least one same time domain characteristic. Component 199 may also be configured to receive at least one additional pilot signal via additional instances of the at least two SRS resources. Component 199 may be configured to receive a coherence status indication comprising information associated with loss of coherence or maintenance of coherence for the additional instances of the at least two SRS resources. Component 199 may be configured to receive a TxTEG identifier assigned to a first SRS resource of the at least two SRS resources, wherein, if a TxTEG identifier is not assigned to a second SRS resource of the at least two SRS resources, the second SRS resource is associated with the TxTEG identifier. In certain aspects, component 199 may be configured to transmit, to a UE, an aggregation configuration indicating at least two PRS resources to be aggregated in a DL transmission. Component 199 may be configured to transmit, as an instance of a network entity and from the network entity, at least one pilot signal via the at least two PRS resources, based on the aggregation configuration, wherein the at least two PRS resources are aggregated with a coherence property, wherein a first PRS resource of the at least two PRS resources is associated with a TxTEG identifier based on assistance information indicating that the TxTEG identifier is assigned to a second PRS resource of the at least two PRS resources, without the TxTEG identifier being assigned to the second PRS resource. Component 199 may also be configured to receive measurement information associated with at least one of a reference signal time difference measurement or a UE RxTx time difference measurement aggregated via the at least two PFLs, wherein the at least one of the reference signal time difference measurement or the UE RxTx time difference measurement is associated with the at least two PRS resources, and wherein corresponding additional path information is aggregated via the at least two PFLs. That is, various aspects provide aggregation of SRS resources and PRS resources in positioning transmissions, which enables more efficient signaling on reference signal resources, thereby improving bandwidth and supporting cross-CC path loss reference indication for intra-band aggregation, while reducing signaling overhead for TxTEG identifiers and timing error margins, and providing coherence status information to network nodes (e.g., base stations) and network entities (e.g., LMFs) via indications of aggregated reference signal resources that maintain and / or lose coherence by reporting indications of coherence status information for aggregated reference signal resources and associating TxTEG identifiers and timing error margins to unassigned or unmarked reference signal resources.Additionally, improved accuracy of timing measurement / reporting is provided by providing configuration of improved granularity for timing reporting (e.g., for receive-transmit time difference), and improved RSTD and UE RxTx time difference measurements and reduced signaling overhead are provided by extending the association of characteristics of aggregated resources to aggregation in PFL.

[0064] Figure 2A is a diagram 200 illustrating an example of a first subframe within a 5G NR frame structure. Figure 2B is a diagram 230 illustrating an example of a DL channel within a 5G NR subframe. Figure 2C is a diagram 250 illustrating an example of a second subframe within a 5G NR frame structure. Figure 2D is a diagram 280 illustrating an example of a UL channel within a 5G NR subframe. The 5G NR frame structure can be frequency division duplex (FDD) (wherein, for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to either DL or UL), or time division duplex (TDD) (wherein, for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to both DL and UL). In the examples provided in Figures 2A and 2C, the 5G NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (mostly DL), where D stands for DL, U stands for UL, and F stands for flexible use between DL / UL, and subframe 3 is configured with slot format 1 (wherein all are UL). While subframes 3 and 4 are shown as having slot formats 1 and 28, respectively, any particular subframe can be configured with any of the various available slot formats 0-61. Slot formats 0 and 1 are all DL and all UL, respectively. The other slot formats 2-61 include a mix of DL, UL, and flexible symbols. The UE is configured with the slot format via a received slot format indicator (SFI), either dynamically via DL control information (DCI) or semi-statically / statically via radio resource control (RRC) signaling. Note that the following description also applies to the 5G NR frame structure as TDD.

[0065] Figures 2A through 2D illustrate a frame structure, and aspects of the present disclosure are applicable to other wireless communication technologies that may have different frame structures and / or different channels. A frame (10 ms) can be divided into 10 equally sized subframes (1 ms). Each subframe may include one or more slots. A subframe may also include mini-slots, which may include 7, 4, or 2 symbols. Each slot may include 14 or 12 symbols, depending on whether the cyclic prefix (CP) is normal or extended. For a normal CP, each slot may include 14 symbols, and for an extended CP, each slot may include 12 symbols. Symbols on the DL may be CP-orthogonal frequency division multiplexing (OFDM) symbols. Symbols on the UL may be CP-OFDM symbols (for high-throughput scenarios) or discrete Fourier transform (DFT)-spread OFDM (DFT-s-OFDM) symbols (for power-limited scenarios; limited to single-stream transmission). The number of slots within a subframe depends on the CP and the numerology set. The numerology defines the subcarrier spacing (SCS) (see Table 1). The symbol length / duration is scalable with 1 / SCS.

[0066] µ SCS#timg# cyclic prefix 0 15 normal 1 30 normal 2 60 Normal, Extended 3 120 normal 4 240 normal 5 480 normal 6 960 normal

[0067] Table 1: Parameter set, SCS and CP

[0068] For normal CP (14 symbols / slot), different parameter sets µ 0 to 4 allow 1, 2, 4, 8, and 16 slots per subframe, respectively. For extended CP, parameter set 2 allows 4 slots per subframe. Therefore, for normal CP and parameter set µ, there are 14 symbols / slot and 2 µ time slots / subframe. The subcarrier spacing can be equal to ,in For parameter sets 0 through 4, the subcarrier spacing for parameter set µ=0 is 15 kHz, and for parameter set µ=4, the subcarrier spacing is 240 kHz. Symbol length / duration is inversely correlated with subcarrier spacing. Figures 2A through 2D provide examples for a normal CP with 14 symbols per slot and a parameter set µ=2 with 4 slots per subframe. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 µs. Within a frame set, there may be one or more different bandwidth parts (BWPs) frequency-division multiplexed (see Figure 2B). Each BWP may have a specific parameter set and CP (normal or extended).

[0069] A resource grid can be used to represent the frame structure. Each slot consists of a resource block (RB) (also known as a physical RB (PRB)) that extends over 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0070] As illustrated in Figure 2A, some of the REs carry reference (pilot) signals (RSs) for the UE. The RSs may include a demodulation RS (DM-RS) (indicated as R for one specific configuration, but other DM-RS configurations are possible) and a channel state information reference signal (CSI-RS) used for channel estimation at the UE. The RSs may also include a beamforming RS (BRS), a beam refinement RS (BRRS), and a phase tracking RS (PT-RS).

[0071] Figure 2B illustrates examples of various downlink channels within a subframe of a frame. The physical downlink control channel (PDCCH) carries DCI within one or more control channel elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs). Each CCE consists of six resource element groups (REGs), with each REG comprising 12 contiguous REs within an OFDM symbol of a RB. The PDCCH within a BWP is referred to as a control resource set (CORESET). During PDCCH monitoring opportunities within a CORESET, a UE is configured to monitor PDCCH search spaces (e.g., common search space, UE-specific search space) for PDCCH candidates with different DCI formats and aggregation levels. Additional BWPs may be located at higher and / or lower frequencies across the channel bandwidth. The primary synchronization signal (PSS) may be within symbol 2 of specific subframes of a frame. The PSS is used by UE 104 to determine subframe / symbol timing and physical layer identification. The secondary synchronization signal (SSS) may be within symbol 4 of specific subframes of a frame. The SSS is used by the UE to determine the physical layer cell identity group number and radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can determine the physical cell identifier (PCI). Based on the PCI, the UE can determine the location of the DM-RS. The physical broadcast channel (PBCH), which carries the master information block (MIB), can be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block (also known as an SS block (SSB)). The MIB provides the system frame number (SFN) and the number of RBs in the system bandwidth. The physical downlink shared channel (PDSCH) carries user data, broadcast system information not sent via the PBCH (such as the system information block (SIB)), and paging messages.

[0072] As illustrated in Figure 2C , some of the REs carry DM-RSs (indicated as R for a specific configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE can transmit DM-RSs for the Physical Uplink Control Channel (PUCCH) and DM-RSs for the Physical Uplink Shared Channel (PUSCH). The PUSCH DM-RS can be sent in the first or first two symbols of the PUSCH. The PUCCH DM-RS can be sent in different configurations depending on whether a short or long PUCCH is transmitted and the specific PUCCH format used. The UE can transmit a Sounding Reference Signal (SRS). The SRS can be sent in the last symbol of a subframe. The SRS can have a comb structure, and the UE can transmit the SRS on one of the teeth of the comb. The SRS can be used by the base station for channel quality estimation to enable frequency-dependent scheduling of the UL.

[0073] FIG2D illustrates an example of various UL channels within a subframe of a frame. The PUCCH may be located as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as a scheduling request, a channel quality indicator (CQI), a precoding matrix indicator (PMI), a rank indicator (RI), and hybrid automatic repeat request (HARQ) acknowledgement (ACK) (HARQ-ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACKs and / or negative ACKs (NACKs)). The PUSCH carries data and may additionally be used to carry a buffer status report (BSR), a power headroom report (PHR), and / or UCI.

[0074] Figure 3Figure 3 is a block diagram of a base station 310 communicating with a UE 350 in an access network. In the DL, Internet Protocol (IP) packets may be provided to a controller / processor 375. The controller / processor 375 implements Layer 3 and Layer 2 functionality. Layer 3 includes the Radio Resource Control (RRC) layer, and Layer 2 includes the Service Data Adaptation Protocol (SDAP) layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the Medium Access Control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with broadcasting of system information (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-radio access technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functionality associated with header compression / decompression, security (ciphering, deciphering, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with delivery of upper layer packet data units (PDUs), error correction through ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0075] The transmit (TX) processor 316 and receive (RX) processor 370 implement Layer 1 functionality associated with various signal processing functions. Layer 1, which includes the physical (PHY) layer, may include error detection on transport channels, forward error correction (FEC) coding / decoding of transport channels, interleaving, rate matching, mapping onto physical channels, modulation / demodulation of physical channels, and MIMO antenna processing. The TX processor 316 handles the mapping onto signal constellations based on various modulation schemes (e.g., binary phase-shift keying (BPSK), quadrature phase-shift keying (QPSK), M-order phase-shift keying (M-PSK), and M-order quadrature amplitude modulation (M-QAM)). The coded and modulated symbols are then separated into parallel streams. Each stream is then mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., a pilot) in the time and / or frequency domain, and then combined using an inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time-domain OFDM symbol stream. The OFDM stream is spatially precoded to generate multiple spatial streams. Channel estimates from a channel estimator 374 may be used to determine the coding and modulation schemes, as well as for spatial processing. The channel estimates may be derived from a reference signal and / or channel condition feedback transmitted by the UE 350. Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318Tx. Each transmitter 318Tx may modulate a radio frequency (RF) carrier using a corresponding spatial stream for transmission.

[0076] At the UE 350, each receiver 354Rx receives a signal via its corresponding antenna 352. Each receiver 354Rx recovers the information modulated onto the RF carrier and provides the information to a receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement Layer 1 functionality associated with various signal processing functions. The RX processor 356 performs spatial processing on the information to recover any spatial streams destined for the UE 350. If multiple spatial streams are destined for the UE 350, they may be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then converts the OFDM symbol stream from the time domain to the frequency domain using a fast Fourier transform (FFT). The frequency-domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, as well as the reference signal, are recovered and demodulated by determining the most likely signal constellation point transmitted by the base station 310. These soft decisions may be based on channel estimates calculated by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals originally sent on the physical channel by base station 310. The data and control signals are then provided to a controller / processor 359, which implements layer 3 and layer 2 functionality.

[0077] The controller / processor 359 may be associated with a memory 360 that stores program codes and data. The memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover IP packets. The controller / processor 359 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.

[0078] Similar to the functionality described in conjunction with DL transmissions performed by the base station 310, the controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIB) acquisition, RRC connection, and measurement reporting; PDCP layer functionality associated with header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functionality associated with delivery of upper layer PDUs, error correction through ARQ, concatenation, segmentation, and reassembly of RLC SDUs, resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0079] Channel estimates derived by the channel estimator 358 based on a reference signal or feedback transmitted by the base station 310 may be used by the TX processor 368 to select the appropriate coding and modulation schemes and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antennas 352 via separate transmitters 354Tx. Each transmitter 354Tx may modulate an RF carrier with a corresponding spatial stream for transmission.

[0080] UL transmissions are processed at the base station 310 in a manner similar to that described in conjunction with the receiver functionality at the UE 350. Each receiver 318Rx receives a signal through its corresponding antenna 320. Each receiver 318Rx recovers information modulated onto an RF carrier and provides the information to the RX processor 370.

[0081] The controller / processor 375 may be associated with a memory 376 that stores program codes and data. Memory 376 may be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover IP packets. The controller / processor 375 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0082] At least one of the TX processor 368, the RX processor 356, and the controller / processor 359 may be configured to perform a combined Figure 1 At least one of the TX processor 316, the RX processor 370, and the controller / processor 375 may be configured to perform a combined Figure 1 Aspects of component 199.

[0083] Figure 4 FIG4 is a diagram illustrating an example of UE positioning based on reference signal measurement. UE 404 may be at time T SRS_TX UL-SRS 412 is sent and at time T PRS_RX Receive DL Positioning Reference Signal (PRS) (DL-PRS) 410. TRP 406 may be at time T SRS_RX Receive UL-SRS 412 and at time T PRS_TX 410. The UE 404 may receive the DL-PRS 410 before transmitting the UL-SRS 412, or may transmit the UL-SRS 412 before receiving the DL-PRS 410. In both cases, the positioning server (eg, location server 168) or the UE 404 may determine the UL-SRS 412 based on the || T SRS_RX – T PRS_TX | – |T SRS_TX – T PRS_RX || to determine RTT 414. Thus, multi-RTT positioning may utilize UE Rx-Tx time difference measurements (ie, |T SRS_TX – T PRS_RX |) and DL-PRS reference signal received power (RSRP) (DL-PRS-RSRP), and the measured TRP Rx-Tx time difference measurement (ie, |T SRS_RX – T PRS_TX |) and UL-SRS-RSRP. UE 404 uses assistance data received from the positioning server to measure the UE Rx-Tx time difference measurement (and optionally the DL-PRS-RSRP of the received signal), and TRP 402, 406 uses assistance data received from the positioning server to measure the gNB Rx-Tx time difference measurement (and optionally the UL-SRS-RSRP of the received signal). These measurements can be used at the positioning server or UE 404 to determine the RTT, which is used to estimate the position of UE 404. Other methods for determining RTT are possible, such as, for example, using DL-TDOA and / or UL-TDOA measurements.

[0084] DL-AoD positioning may utilize the measured DL-PRS-RSRP of downlink signals received at a UE 404 from multiple TRPs 402, 406. The UE 404 uses assistance data received from a positioning server to measure the DL-PRS-RSRP of the received signals, and the resulting measurements, along with the azimuth angle of departure (A-AoD), the zenith angle of departure (Z-AoD), and other configuration information, are used to position the UE 404 relative to neighboring TRPs 402, 406.

[0085] DL-TDOA positioning may utilize the DL Reference Signal Time Difference (RSTD) (and optionally DL-PRS-RSRP) of downlink signals received at a UE 404 from multiple TRPs 402, 406. The UE 404 uses assistance data received from a positioning server to measure the DL RSTD (and optionally DL-PRS-RSRP) of the received signals, and the resulting measurements, along with other configuration information, are used to position the UE 404 relative to neighboring TRPs 402, 406.

[0086] UL-TDOA positioning may utilize the UL relative time of arrival (RTOA) (and optionally UL-SRS-RSRP) of uplink signals transmitted from a UE 404 at multiple TRPs 402, 406. The TRPs 402, 406 use assistance data received from a positioning server to measure the UL-RTOA (and optionally UL-SRS-RSRP) of the received signals, and the resulting measurements, along with other configuration information, are used to estimate the position of the UE 404.

[0087] UL-AoA positioning may utilize the measured azimuth angle of arrival (A-AoA) and zenith angle of arrival (Z-AoA) of uplink signals sent from a UE 404 at multiple TRPs 402, 406. The TRPs 402, 406 measure the A-AoA and Z-AoA of the received signals using assistance data received from a positioning server, and the resulting measurements are used along with other configuration information to estimate the position of the UE 404.

[0088] Additional positioning methods may be used to estimate the position of the UE 404, such as, for example, UE-side UL-AoD and / or DL-AoA. It should be noted that data / measurements from various techniques may be combined in various ways to increase accuracy, determine and / or enhance certainty, supplement / refine measurements, and / or replace / provide missing information.

[0089] Positioning measurements and operations can be used to locate wireless devices in wireless communication networks. For example, wireless communication networks may utilize pilot signals transmitted via reference signal resources (such as SRS resources and / or PRS resources). Such reference signal resources may have characteristics such as a TxTEG identifier, a transmit timing error margin, and a transmit timing error. To improve the efficiency of positioning measurements and operations, reference signal resources may be aggregated for transmission. However, the coherence of transmissions of aggregated reference signal resources may affect the accuracy of positioning information and operations. A UE may not be aware of the loss of coherence in the aggregated reference signal resources until transmission via the aggregated reference signal resources has occurred. Consequently, timing and positioning accuracy on the network side may be affected. Furthermore, the signaling overhead for reference signal resource characteristics (e.g., TxTEG identifier, transmit timing error margin, transmit timing error, etc.) may include additional processing (e.g., encoding / decoding) and power consumption for both the transmitter and receiver.

[0090] Various aspects herein for aggregating SRS and PRS resources in positioning transmissions may provide enhancements to accuracy, signaling overhead, and processing capabilities for positioning measurements / operations by reporting indications of coherence status information for aggregated reference signal resources and associating TxTEG identifiers and timing error margins to unassigned or unmarked reference signal resources, as well as improving bandwidth and supporting cross-CC path loss reference indication for intra-band aggregation.

[0091] Although various aspects may be described in the context of aggregation of SRS resources and / or PRS resources in the context of positioning measurements for descriptive and illustrative purposes, the aspects are not limited thereto and may be applicable to other types of resources and operations, as will be understood by persons skilled in the relevant art having the benefit of this disclosure.

[0092] Various aspects may relate to bandwidth aggregation for positioning measurements across up to three intra-band contiguous carriers, as well as signaling and procedures for supporting aggregation of PRS / SRS resources (respectively) across PFLs / carriers for positioning measurements (e.g., where signals on the aggregated resources are transmitted and received (respectively) using a single RF chain (e.g., via the same antenna). Bandwidth aggregation for positioning measurements may be applicable to timing-related measurements (e.g., RSTD, RTOA, and UE / gNB Rx-Tx time difference). Various aspects may also relate to radio resource management (RRM) characteristics for measurement gaps in RRC connected and inactive modes, including PRS measurement periodicity / reporting. PRS aggregation and signaling across PFLs may involve assistance data enhancements to enable PRS aggregation, including, but not limited to, handling of tone / subcarrier gaps between CCs, PRS aggregation within a measurement gap (MG), PRS aggregation within a PRS processing window (PPW), and more. Various aspects may also relate to performance characteristics for aggregated resource bandwidth (e.g., 200 MHz from two aggregated 100 MHz reference signal resources). Aspects may also relate to SRS aggregation and signaling, including but not limited to concurrent SRS transmission over intra-band contiguous carrier aggregation (CA), signaling of which SRS should be coherently transmitted, and the like.

[0093] Figure 5 Diagram 500 illustrates an example of a call flow diagram and configuration for wireless communication in various aspects. Diagram 500 includes a call flow diagram 550 for UE 502, base station 504, and LMF 505, and a call flow diagram 560 for UE 502 and base station 504.

[0094] In call flow diagram 550 , LMF 505 may be configured to provide NR Positioning Protocol A (NRPPa) location information request 506 to base station 504. NRPPa location information request 506 may include a request for TxTEG reporting. TxTEG reporting may be included in RRC signaling as a reporting criterion for RRC reconfiguration 508 , which may be an SRS configuration (e.g., "SRS-Config"), as shown in diagram 500 for UE TxTEG request UL TDOA configuration ("UE-TxTEG-RequestUL-TDOA-Config"). Such a configuration may configure the periodicity of UE reporting for the association between TxTEG and SRS positioning resources. A one-shot configuration may enable the UE to report the association once, while a periodic reporting configuration may enable the UE to report the association periodically based on this value (e.g., every 120ms, 240ms, etc.). The RRC reconfiguration 508 may be provided by the base station 504 to the UE 502 , and the base station 504 may be configured to provide the NRPPa positioning information response 510 back to the LMF 505 .

[0095] The UE 502 may be configured to provide RRC UE Positioning Assistance (UEPA) information 512a to the base station 504. The RRC UEPA information 512a may be an RRC UL Dedicated Control Channel (DCCH) message for UEPA information ("UEPositioningAssistanceInfo") to report the association between UL SRS resources used for positioning and the UE TxTEG identifier. The base station 504 may then be configured to provide an NRPPa positioning information update 514a to the LMF 505 based on the RRC UEPA information 512a. The UE 502 may be configured to provide later or updated RRC UEPA information (e.g., RRC UEPA information 512b), and the base station 504 may be configured to provide an NRPPa positioning information update 514b to the LMF 505 based on the RRC UEPA information. Such subsequent updates may similarly continue, for example, with the provision of another RRC UEPA information (not shown) from the UE 502 to the base station 504 and, correspondingly, with the provision of another NRPPa positioning information update (not shown) by the base station 504 to the LMF 505.

[0096] UE 502 may use a UEPA information procedure to report UEPA information (e.g., 512a). UE 502 may report the association between the UL-SRS resources used for positioning and the UE Tx TEG identifier. In call flow diagram 560, base station 504 may be configured to provide RRC configuration 516 for configuring the UE for UEPA, and UE 502 may be configured to receive the RRC configuration, as described above. For example, when UE 502 is capable of providing the association between the UL SRS resources used for positioning, the UE Tx TEG identifier in "RRC_CONNECTED" may initiate the procedure when configured to provide the association information. This may be based on, for example, RRC reconfiguration 508 in call flow diagram 550, which may be an SRS configuration for the UE Tx TEG requesting a UL TDOA configuration ("ue-TxTEG-RequestUL-TDOA-Config").

[0097] Upon initiating this procedure, the UE 502 may be configured to perform the following operations. The UE 502 may be configured to initiate the transmission of a UEPositioningAssistanceInfo message to provide the above-mentioned association, which may include further actions related to the transmission of the UEPositioningAssistanceInfo message. For example, the UE 502 may be configured to set the content of the UEPositioningAssistanceInfo message as follows. If the ue-TxTEG-RequestUL-TDOA-Config in the RRCReconfiguration message is configured with periodicReporting, the UE 502 may store the ue-TxTEG-Association corresponding to each ue-TxTEG-ID with the nr-TimeStamp for all association changes. The UE 502 may also be configured to include the result in the ue-TxTEG-AssociationList in the UEPositioningAssistanceInfo message upon expiration of each configured period. The UE 502 may be configured to include the ue-TxTEG-TimingErrorMarginValue with each UEPositioningAssistanceInfo message. If the ue-TxTEG-RequestUL-TDOA-Config in the RRCReconfiguration message is not configured with periodicReporting but is configured with oneShot, the UE 502 may also be configured to identify the ue-TxTEG-Association corresponding to each ue-TxTEG-ID with the nr-TimeStamp and include the result in the ue-TxTEG-AssociationList in the UEPositioningAssistanceInfo message once. The UE 502 may also be configured to include the ue-TxTEG-TimingErrorMarginValue for each UEPositioningAssistanceInfo message. The UE 502 may be configured to submit the UEPositioningAssistanceInfo message to lower layers for transmission.

[0098] Figure 6 Diagram 600 illustrates an example of a configuration for wireless communication in various aspects. For example, diagram 600 illustrates the configuration of a UEPA information ("UEPositioningAssistanceInfo") message. In various aspects, the configuration of the UEPA information message in diagram 600 can be similar to the configuration described above for Figure 5 The various aspects described may be used in combination.

[0099] Figure 7

[0066] A diagram 700 illustrates an example block diagram and configuration for wireless communication in various aspects. For example, diagram 700 illustrates configuration 702, SRS aggregation 704 for intra-band contiguous aggregation, and PRS aggregation 706 for intra-band contiguous aggregation.

[0100] Configuration 702 illustrates an information element (IE) for NR DL PRS TRP Timing Error Group (TEG) Information ("NR-DL-PRS-TRP-TEG-Info"). A location server (e.g., LMF) can use the IE for NR-DL-PRS-TRP-TEG-Info to provide information on associating DL-PRS resources with TRP TxTEG.

[0101] SRS aggregation 704 for intra-band contiguous aggregation shows SRS resources SRS1 and SRS2 aggregated in a frequency band ("Band 1"). SRS1 and SRS2 are aggregated across CCs (e.g., the first CC (CC1) and the second CC (CC2) of Band 1). Additionally, the same cross-CC path loss reference parameter may be associated with SRS1 and SRS2. SRS aggregation 704 results in an effective bandwidth that is twice the bandwidth of SRS1 and SRS2 when not aggregated. For example, if SRS1 and SRS2 are each at 100 MHz, then when SRS1 and SRS2 are aggregated in Band 1, the bandwidth is doubled to 200 MHz.

[0102] PRS aggregation 706 for intra-band contiguous aggregation shows PRS resources PRS1 and PRS2 aggregated in a frequency band ("Band 2"). PRS1 and PRS2 are aggregated across CCs (e.g., the first CC (CC1) and the second CC (CC2) of Band 2). Additionally, the same cross-CC path loss reference parameter may be associated with PRS1 and PRS2. PRS aggregation 706 results in an effective bandwidth that is twice the bandwidth of PRS1 and PRS2 when not aggregated. For example, if PRS1 and PRS2 are each at 100 MHz, then when PRS1 and PRS2 are aggregated in Band 1, the bandwidth is doubled to 200 MHz.

[0103] Figure 8Diagram 800 illustrates an example configuration for wireless communication in various aspects. For example, diagram 800 illustrates a configuration for TxTEG reporting in the Long Term Evolution (LTE) Positioning Protocol (LPP). In various aspects, the configuration for TxTEG reporting in diagram 800 may be associated with an IE of NR Multi-RTT Signal Measurement Information. This IE and information may be sent via the LPP and may be utilized by a target device (e.g., a UE) to provide NR Multi-RTT measurements to a location server (e.g., a LMF).

[0104] Figure 9 FIG900 is a call flow diagram for wireless communication in various aspects. Call flow diagram 900 illustrates SRS aggregation in positioning transmissions for a UE (e.g., UE 902), which may communicate with a network node (e.g., base station 904, such as a gNB or other type of base station, as shown), each of which may communicate with a network entity (e.g., LMF 905). Aspects described with respect to base station 904 may be performed in aggregate by the base station and / or in disaggregated form by one or more components of base station 904. Additionally or alternatively, these aspects may be performed autonomously by UE 902 in addition to and / or in lieu of operations of base station 904.

[0105] In the illustrated aspect, a UE 902 may be configured to receive an aggregation configuration 906 indicating SRS resources, as provided from a base station 904. The SRS resources may be at least two SRS resources to be aggregated in an UL transmission. In various aspects, the base station 904 may provide the aggregation configuration 906 to the UE 902 via RRC signaling, etc. The UE 902 may be configured to transmit or provide a pilot signal 908 to the base station 904 via the SRS resources based on the aggregation configuration 906. In various aspects, the pilot signal 908 may be at least one pilot signal, and the SRS resources may be aggregated with coherence properties within the same set of OFDM symbols. The SRS resources may be associated with the same path loss parameter, the same transmit power spectral density, the same spatial relation reference signal, the same comb size, and / or at least one same time-domain characteristic (e.g., periodicity), and may also have the same time slot and / or the same parameter set. In various aspects, the same path loss parameter may be associated with the cross-CC path loss reference indication, and the UE 902 may be configured to send or provide at least two SRS resources with the cross-CC path loss reference indication to the base station 904 .

[0106] The UE 902 may be configured to transmit or provide a TxTEG identifier (ID) 910 to the base station 904. The TxTEG identifier 910 may be assigned to a first SRS resource among the at least two SRS resources, and if the TxTEG identifier 910 is not assigned to a second SRS resource among the at least two SRS resources, the second SRS resource may be associated with the TxTEG identifier 910. In one aspect, the UE 902 may be configured to transmit the TxTEG identifier 910 along with or in association with at least one transmit timing error margin assigned to the first SRS resource among the at least two SRS resources. In such an aspect, if the at least one transmit timing error margin is not assigned to the second SRS resource among the at least two SRS resources, the second SRS resource is associated with the at least one transmit timing error margin (e.g., where the at least two SRS resources may have a transmit timing mismatch therebetween).

[0107] In one aspect, the UE 902 may be configured to transmit a TxTEG identifier 910 along with or in association with a transmit timing error margin assigned to a first SRS resource and a second SRS resource of at least two SRS resources. The first SRS resource may be aggregated with the second SRS resource, and the first SRS resource and the second SRS resource may have the same transmit timing error. In this aspect, the UE 902 may be configured to transmit at least one additional pilot signal 912 via at least one additional SRS resource based on the aggregation configuration 906. The at least one additional SRS resource may be assigned an additional TxTEG identifier different from the TxTEG identifier 910, and the at least one additional SRS resource may be assigned an additional transmit timing error margin that is greater than the transmit timing error margin of the TxTEG identifier 910. In such an aspect, the UE 902 may be configured to transmit at least one additional pilot signal 912 via the at least one additional SRS resource based on the aggregation configuration 906. The at least one additional SRS resource may be assigned with an additional TxTEG identifier different from the TxTEG identifier 910 , and the at least one additional SRS resource may be assigned with an additional transmit timing error margin that is greater than the transmit timing error margin of the TxTEG identifier 910 .

[0108] The UE 902 may transmit a pilot signal via an SRS resource at a time, as similarly noted above, but with a loss of coherence for the SRS resource. The loss of coherence may be due to another channel being scheduled for frequency division multiplexing (FDM), due to per-CC group delay variation, or due to other reasons. The UE 902 may not determine that coherence loss has occurred or that coherence has been maintained until after the transmission of the pilot signal via the SRS resource has occurred. Therefore, the UE 902 may be configured to obtain (914) a coherence indication indicating that at least two additional instances of the SRS resource have a loss of coherence or that coherence has been maintained. Based on obtaining (914) the coherence indication, the UE 902 may be configured to transmit or provide a coherence status indication 916, and the base station 904 and / or the LMF 905 may be respectively configured to receive the coherence status indication. That is, the UE 902 may be configured to transmit the coherence status indication 916 to include information associated with loss of coherence or maintenance of coherence for the additional instances of at least two SRS resources via which the at least one additional pilot signal 912 is transmitted.

[0109] The UE 902 may be configured to send / provide a coherence status indication 916 to the base station 904 via RRC signaling in association with uplink time difference of arrival (U-TDOA). In this regard, the coherence status indication may be in an information element (IE) for UEPA information. The UE 902 may also be configured to send / provide the coherence status indication 916 to the LMF 905. In this regard, the UE 902 may be associated with multiple round trip time (M-RTT) positioning and may be configured to send the coherence status indication 916 of the LMF (as a network entity) in NR M-RTT signal measurement information via LPP signaling.

[0110] Figure 10 Diagram 1000 illustrates an example configuration of coherence states and transmit timing error margins for SRS / PRS resources in various aspects. Aspects of diagram 1000 may be further described in the context of the description of call flow diagram 900 above.

[0111] Diagram 1000 includes characteristics of SRS resources 1002, which may represent one or more SRS resource instances. Characteristics of SRS resources 1002 may include, but are not limited to, a TxTEG ID (e.g., which may be common to the aggregated SRS resources), a Tx timing error margin assigned or associated with the TxTEG ID (e.g., different resources may have the same timing error or may have a Tx timing mismatch), a phase error group (PEG) identifier (e.g., which may be common to the aggregated SRS resources), and a phase error margin assigned or associated with the PEG identifier (e.g., where different resources may have the same phase error or may have a phase mismatch (e.g., in degrees, etc.)). In various aspects, the phase error margin may be a soft metric for coherence state information reporting and may be the maximum phase difference between two SRS resources.

[0112] Diagram 1000 also includes characteristics of PRS resources 1004, which may represent one or more PRS resource instances. Characteristics of PRS resources 1004 may include, but are not limited to, a TxTEG ID (e.g., which may be common to the aggregated SRS resources), a Tx timing error margin assigned or associated with the TxTEG ID (e.g., different resources may have the same timing error or may have a Tx timing mismatch), a phase error group (PEG) identifier (e.g., which may be common to the aggregated SRS resources), and a phase error margin assigned or associated with the PEG identifier (e.g., where different resources may have the same phase error or may have a phase mismatch (e.g., in degrees, etc.)). In various aspects, the aggregated first and second SRS resources may be assigned a PEG identifier that is different from an additional PEG identifier assigned to at least one additional SRS resource.

[0113] Diagram 1000 also includes an illustration of reporting a coherence state indication 1008 for coherence state information. For example, a UEPositioningAssistanceInfo IE 1006 for UEPA information may be used to provide a coherence state indication 1008 for coherence state information. As mentioned above, the coherence state indication may be sent or provided as at least one of a standalone transmission or a periodic transmission - that is, in some aspects, a periodic report may be combined with a single non-periodic reporting instance. The coherence state information may be provided as an indication in a single report (e.g., according to a "oneShot" configuration) or in a periodically repeated report (e.g., according to a "periodicReporting" configuration). As also described with respect to Figure 9As described, the UE may send or provide a coherence status indication to the base station in association with U-TDOA via RRC signaling in an IE for UEPA information. The UE may also be configured to send or provide a coherence status indication to the LMF when the UE is associated with M-RTT positioning, and the coherence status indication may be sent in NR M-RTT signal measurement information via LPP signaling.

[0114] Diagram 1000 also includes an illustration of an example of a coherence status indication 1008 for coherence status information. Coherence status indication 1008 may include coherence status information, such as, but not limited to, an indication of loss of coherence, an indication of maintenance of coherence, a transmit timestamp, Tx timing error margin information, phase error margin information, and the like. A transmit timestamp associated with loss of coherence or maintenance of coherence for at least two SRS resources may be included with coherence status indication 1008. As described above, a phase error margin assigned or associated with a PEG identifier (e.g., where different resources may have the same phase error or may have a phase mismatch (e.g., in degrees, etc.)) may also be included in coherence status indication 1008. In various aspects, the phase error margin may be a soft metric for coherence status information reporting and may be a maximum phase difference between two SRS resources.

[0115] The coherence status indication 1008 may also include information associated with at least one transmit timing error margin between the at least two SRS resources. In various aspects, the timing error margin of a first resource assigned a TxTEG ID may be associated with a second resource aggregated with the first resource. In various aspects, the first transmit timing error margin between the at least two SRS resources may be equivalent to the second transmit timing error margin associated with the TxTEG identifier assigned to the first SRS resource of the at least two SRS resources. The timing error margin of another aggregated resource may be included in the coherence status indication 1008 and may be equivalent to or assigned to the timing error margin of the resource with the TxTEG ID. Different timing error margins for different non-aggregated resources that may be assigned different TxTEG IDs may be included in the coherence status indication 1008. In various aspects, the first transmit timing error margin may be a subset of the second transmit timing error margin. In some aspects, the first transmit timing error margin may include the TC0 enumeration, and in other aspects may also include one or more enumerations of TC2, TC4, TC6, TC8, TC12, TC16, TC20, TC24, TC32, TC40, TC48, TC56, TC64, TC72, TC80, etc.

[0116] Figure 11FIG11 is a call flow diagram 1100 for wireless communication in various aspects. Call flow diagram 1100 illustrates PRS aggregation in positioning transmissions for a UE (e.g., UE 1102), which may communicate with a network node (base station 1104, such as a gNB or other type of base station, as shown), each of which may communicate with a network entity (e.g., LMF 1105). Various aspects described with respect to base station 1104 may be performed in aggregate by the base station and / or in disaggregated form by one or more components of base station 1104. Additionally or alternatively, these aspects may be performed autonomously by UE 1102 in addition to and / or in lieu of operations of base station 1104.

[0117] In the illustrated aspect, a UE 1102 may be configured to receive an aggregation configuration 1106 indicating PRS resources from a base station 1104 (e.g., a network node). In various aspects, the aggregation configuration 1106 may indicate at least two PRS resources to be aggregated in a DL transmission. The UE 1102 may also be configured to receive at least one pilot signal 1108 from an LMF 1105 (e.g., a network entity) via the at least two PRS resources based on the aggregation configuration 1106. In various aspects, the at least two PRS resources may be aggregated based on a coherence property. Based on assistance information indicating that a first PRS resource of the at least two PRS resources is assigned to a TxTEG identifier, a second PRS resource of the at least two PRS resources may be associated with the TxTEG identifier if the TxTEG identifier is not assigned to the second PRS resource.

[0118] In one aspect, the UE 1102 may be configured to receive at least one additional pilot signal via at least one additional PRS resource, wherein the at least one additional PRS resource is assigned an additional TxTEG identifier that is different from the TxTEG identifiers of the aggregated at least two PRS resources. In such an aspect, the at least one additional PRS resource is assigned an additional timing error margin that is greater than the timing error margin associated with the TxTEG identifiers of the aggregated at least two PRS resources.

[0119] The UE 1102 may be configured to process (at 1110) the first PRS resource and the second PRS resource based on a TxTEG identifier when the TxTEG identifier is not assigned to the second PRS resource of the at least two PRS resources. In various aspects, the first PRS resource of the at least two PRS resources may be assigned a timing error margin based on the assistance information, and the second PRS resource may be associated with the timing error margin when the timing error margin is not assigned to the second PRS resource of the at least two PRS resources. In such aspects, the at least two PRS resources may have a transmit timing mismatch therebetween. In various aspects, the first PRS resource and the second PRS resource of the at least two PRS resources may be assigned a timing error margin. In such aspects, the first PRS resource may be aggregated with the second PRS resource, and the first PRS resource and the second PRS resource may have the same transmit timing error.

[0120] In some aspects, the aggregation configuration 1106 may further indicate at least one resolution granularity parameter or field that may be associated with the timing error margin of at least two PRS resources. In some such aspects, the resolution granularity parameter or field may be a timing reporting granularity factor ("timingReportingGranularityFactor"), which may specify a recommended reporting granularity for UE Rx-Tx time difference measurements. In some aspects, a "value" in the range (0...5) may correspond to (k0...k5) and may be used for NR UE Rx-Tx time difference ("nr-UE-RxTxTimeDiff") and / or NR UE Rx-Tx time difference addition ("nr-UE-RxTxTimeDiffAdditional") in the NR multi-RTT measurement element ("NR-Multi-RTT-MeasElement"). In various aspects, the UE may select different granularity values ​​for nr-UE-RxTxTimeDiff and / or nr-UE-RxTxTimeDiffAdditional. Regarding reporting mapping, the reporting range of base station (e.g., gNB) Rx-Tx time difference can be defined as -985024*Tc to +985024*Tc. The reporting resolution can be uniform within the reporting range and can be defined as T=Tc*2 k(or Tc*2^k), where "k" can be selected by the base station from the set {0, 1, 2, 3, 4, 5}. In various aspects, the timing constant can be defined as Tc=1 / (Δ-fmax*Nf), where Δ-fmax=480,000 Hz and Nf=4096. In various aspects, the LMF can be configured to provide a recommended resolution parameter timingReportingGranularityFactor, and the base station can be configured to select the parameter "k" based on the timingReportingGranularityFactor, after which the base station can notify the LMF of the selection.

[0121] In some aspects, at least one resolution granularity parameter may be extended to include at least one negative integer power of "k" (eg, -1, -2, etc.), which may be consistent with Tc*2 in DL transmissions. k That is, according to aspects of the present disclosure, "k" may be a negative integer. In some aspects, at least one resolution granularity parameter may be an integer power "k" of 1 (one) or 2 (two), and may be associated with a timing error margin of Tc*2 in FR1 DL transmissions. k Thus, aspects of this document provide configurations for improved granularity of timing reporting (eg, for receive-transmit time differences), whereby the described techniques may be used to improve the accuracy of timing measurements and / or reporting.

[0122] UE 1102 may also be configured to transmit measurement information associated with at least one of a reference signal time difference measurement or a UE receive-transmit (RxTx) time difference measurement that may be aggregated across at least two positioning frequency layers (PFLs). In such aspects, at least one of the reference signal time difference measurement or the UE RxTx time difference measurement may be associated with at least two PRS resources, as described above, and corresponding additional path information may be aggregated across the at least two PFLs. In some aspects, the corresponding additional path information may include at least one of a line-of-sight (LOS) flag or a non-line-of-sight (NLOS) flag. The LOS flag and / or the NLOS flag may be assigned to a first of the at least two PFLs, or may be associated with a second of the at least two PFLs without assigning the LOS flag and / or the NLOS flag to the second PFL. Thus, by extending the association of characteristics of aggregated resources to aggregation across PFLs, aspects herein may be used to improve RSTD measurements and UE RxTx time difference measurements, as well as reduce signaling overhead.

[0123] Figure 121200 is a flow chart of a method of wireless communication in various aspects. The method may be performed by a UE (e.g., UE 104, 404, 502, 902, 1102; device 1604). In some aspects, the method may include combining Figure 9 The aspects described in the communication flow and / or Figures 4 to 8 as well as Figure 10 The method provides SRS aggregation in positioning transmission, which enables the UE to notify the network node (e.g., base station) and / or network entity (e.g., LMF) of coherence status information, and associates the characteristics of the SRS resource with other SRS resources aggregated with it, including intra-band aggregation across CCs, to reduce signaling overhead and RxTx processing (e.g., encoding / decoding).

[0124] At 1202, the UE receives an aggregation configuration from a network node indicating at least two SRS resources to be aggregated in an UL transmission. As an example, the receiving can be performed by component 198. Figure 7 、 Figure 9 、 Figure 10 An example is illustrated in which UE 902 performs such reception of an aggregation configuration from a network node (eg, base station 904).

[0125] UE 902 may be configured to receive an indication of SRS resources (eg, Figure 7 SRS aggregation 704; Figure 10 Aggregation configuration 906 of SRS resources 1002 in the SRS. SRS resources (e.g., Figure 7 SRS aggregation 704; Figure 10 The SRS resources 1002 in the UL may be at least two SRS resources (eg, Figure 7 SRS aggregation 704; Figure 10 In various aspects, the base station 904 can provide the aggregation configuration 906 to the UE 902 via RRC signaling or the like.

[0126] At 1204, the UE transmits at least one pilot signal via at least two SRS resources based on the aggregation configuration, wherein the at least two SRS resources are aggregated with a coherence property in the same set of OFDM symbols, and wherein the at least two SRS resources are associated with at least one of the following: a same path loss parameter, a same transmit power spectral density, a same spatial relation reference signal, a same comb size, and / or at least one same time domain characteristic (e.g., periodicity). As an example, the transmitting may be performed by component 198. Figure 7 、 Figure 9 、 Figure 10An example is illustrated in which the UE 902 performs such transmission of a pilot signal via an SRS resource (eg, base station 904, network node).

[0127] The UE 902 can be configured to transmit or provide a pilot signal 908, for example, to the base station 904, via the SRS resources based on the aggregation configuration 906. In various aspects, the pilot signal 908 can be at least one pilot signal, and the SRS resources (e.g., Figure 7 SRS aggregation 704; Figure 10 The SRS resources 1002 in the OFDM symbol set may be aggregated with coherence properties in the same OFDM symbol set. Figure 7 SRS aggregation 704; Figure 10 The SRS resources 1002 in the UE may be associated with the same path loss parameter, the same transmit power spectral density, the same spatial relation reference signal, the same comb size, and / or at least one same time domain characteristic (e.g., periodicity), and may also have the same time slot and / or the same parameter set. In various aspects, the same path loss parameter may be associated with the cross-CC path loss reference indication (e.g., Figure 7 , and the UE 902 may be configured to send or provide at least two SRS resources (eg, Figure 7 SRS aggregation 704; Figure 10 SRS resource 1002 in).

[0128] Figure 13 1300 is a flow chart of a method of wireless communication in various aspects. The method may be performed by a UE (e.g., UE 104, 404, 502, 902, 1102; device 1604). In some aspects, the method may include combining Figure 9 The aspects described in the communication flow and / or Figures 4 to 8 as well as Figure 10 The method provides PRS / SRS aggregation in positioning transmission, which enables the UE to notify the network node (e.g., base station) and / or network entity (e.g., LMF) of coherence status information, and associates the characteristics of SRS / PRS resources with other SRS / PRS resources aggregated with it, including intra-band aggregation across CCs, to reduce signaling overhead and RxTx processing (e.g., encoding / decoding).

[0129] At 1302, the UE receives an aggregation configuration from a network node indicating at least two SRS resources to be aggregated in an UL transmission. As an example, the receiving can be performed by component 198. Figure 9 An example is illustrated in which UE 902 performs such reception of an aggregation configuration from a network node (eg, base station 904).

[0130] UE 902 may be configured to receive an aggregation configuration 906 indicating SRS resources as provided from base station 904. SRS resources (e.g., Figure 7 SRS aggregation 704; Figure 10 The SRS resources 1002 in the UL may be at least two SRS resources (eg, Figure 7 SRS aggregation 704; Figure 10 In various aspects, the base station 904 can provide the aggregation configuration 906 to the UE 902 via RRC signaling or the like.

[0131] At 1304, the UE transmits at least one pilot signal via at least two SRS resources based on the aggregation configuration, wherein the at least two SRS resources are aggregated with a coherence property in the same set of OFDM symbols, and wherein the at least two SRS resources are associated with at least one of the following: a same path loss parameter, a same transmit power spectral density, a same spatial relation reference signal, a same comb size, and / or at least one same time domain characteristic (e.g., periodicity). As an example, the transmitting may be performed by component 198. Figure 9 An example is illustrated in which UE 902 performs such transmission of a pilot signal via SRS resources (eg, to base station 904, a network node).

[0132] UE 902 may be configured to receive data via SRS resources (e.g., Figure 7 SRS aggregation 704; Figure 10 The SRS resources 1002 in the example send or provide a pilot signal 908 to the base station 904. In various aspects, the pilot signal 908 can be at least one pilot signal, and the SRS resources (e.g., Figure 7 SRS aggregation 704; Figure 10 The SRS resources 1002 in the OFDM symbol set may be aggregated with coherence properties in the same OFDM symbol set. Figure 7 SRS aggregation 704; Figure 10 The SRS resources 1002 in the UE may be associated with the same path loss parameter, the same transmit power spectral density, the same spatial relation reference signal, the same comb size, and / or at least one same time domain characteristic (e.g., periodicity), and may also have the same time slot and / or the same parameter set. In various aspects, the same path loss parameter may be associated with the cross-CC path loss reference indication (e.g., Figure 7 , and the UE 902 may be configured to send or provide a reference indication with a cross-CC path loss to the base station 904 (eg, Figure 7At least two SRS resources (e.g., SRS1, SRS2) in Figure 7 SRS aggregation 704 in; for example, Figure 10 In various aspects, the same path loss parameter may be associated with the CC having the lowest CC index. In various aspects, the same path loss parameter may be associated with the CC that is the PCell of the UE.

[0133] At 1306, the UE transmits a TxTEG identifier assigned to a first SRS resource of the at least two SRS resources, wherein the second SRS resource of the at least two SRS resources is associated with the TxTEG identifier if the TxTEG identifier is not assigned to the second SRS resource. As an example, the transmitting can be performed by component 198. Figure 9 An example is illustrated where the UE 902 performs such transmission of the TxTEG identifier (eg, to the base station 904, a network node).

[0134] The UE 902 may be configured to send or provide a TxTEG identifier (ID) 910 (eg, Figure 10 TxTEG ID in the SRS resource 1002 in the TxTEG identifier 910 (e.g., Figure 10 The TxTEG ID in the SRS resource 1002 in the TxTEG ID) may be assigned to at least two SRS resources (eg, Figure 7 SRS aggregation 704; Figure 10 The first SRS resource (eg, Figure 10 1002 in the SRS resource 1002), and without the TxTEG identifier 910 (e.g., Figure 10 The TxTEG ID in the SRS resource 1002 in the TxTEG ID is assigned to at least two SRS resources (eg, Figure 7 SRS aggregation 704; Figure 10 1002) in the SRS resource 1002) in the second SRS resource (eg, Figure 10 In the case of the SRS resource 1002), the second SRS resource (eg, Figure 10 The SRS resource 1002 in the TxTEG identifier 910 (eg, Figure 10 In one aspect, the UE 902 may be configured to be associated with at least one transmit timing error margin (e.g., Figure 10 The TxTEG identifier 910 (eg, Figure 10), the at least one transmit timing error margin is assigned to at least two SRS resources (eg, Figure 7 SRS aggregation 704; Figure 10 The first SRS resource (eg, Figure 10 In such aspects, without increasing the at least one transmit timing error margin (e.g., Figure 10 The Tx timing error margin in the SRS resource 1002 and the Tx timing error margin in the coherence status indication 1008) are assigned to at least two SRS resources (eg, Figure 7 SRS aggregation 704; Figure 10 1002) in the SRS resource 1002) in the second SRS resource (eg, Figure 10 In the case of an SRS resource 1002 in the example (eg, where at least two SRS resources may have a transmission timing mismatch therebetween), a second SRS resource (eg, Figure 10 SRS resource 1002 in the transmission timing error margin (eg, Figure 10 The UE 902 may be configured to be associated with a Tx timing error margin in the SRS resource 1002 and a Tx timing error margin in the coherence status indication 1008). Figure 10 The TxTEG identifier 910 (eg, Figure 10 The transmit timing error margin is assigned to at least two SRS resources (eg, TxTEG ID in the SRS resource 1002). Figure 7 SRS aggregation 704; Figure 10 The first SRS resource and the second SRS resource in the SRS resource 1002 are aggregated. The first SRS resource can be aggregated with the second SRS resource (for example, Figure 7 SRS aggregation 704; Figure 10 1002 ) in the SRS resource, and the first SRS resource and the second SRS resource (eg, Figure 7 SRS aggregation 704; Figure 10 The SRS resources 1002 in the 1002 may have the same transmission timing error (eg, Figure 10 The Tx timing error margin in the SRS resource 1002 and the Tx timing error margin in the coherence status indication 1008 are shown in FIG.

[0135] At 1308, the UE transmits at least one additional pilot signal via the at least two additional instances of the SRS resource. As an example, the transmitting can be performed by component 198. Figure 9 An example is illustrated where UE 902 performs such transmission of a pilot signal (eg, to base station 904, a network node).

[0136] The UE 902 may be configured to transmit data via at least one additional SRS resource (eg, Figure 10 At least one additional pilot signal 912 is sent to the SRS resource 1002 in the at least one additional SRS resource (e.g., Figure 10 The SRS resource 1002 in the example may be assigned an additional TxTEG identifier (eg, Figure 10 ), and at least one additional SRS resource (e.g., Figure 10 The SRS resources 1002 in the example may be assigned with an additional transmit timing error margin (e.g., Figure 10 The Tx timing error margin in the SRS resource 1002 in the coherence status indication 1008, the additional transmission timing error margin is greater than the TxTEG identifier 910 (eg, Figure 10 The transmission timing error margin of the SRS resource 1002 in the TxTEG ID) (for example, Figure 10 In such aspects, the UE 902 may be configured to provide a Tx timing error margin in the SRS resource 1002 in the aggregation configuration 906, and a Tx timing error margin in the coherence status indication 1008. Figure 10 At least one additional pilot signal 912 is sent to the SRS resource 1002 in the at least one additional SRS resource (e.g., Figure 10 The SRS resource 1002 in the example may be assigned an additional TxTEG identifier (eg, Figure 10 ), and at least one additional SRS resource (e.g., Figure 10 The SRS resources 1002 in the example may be assigned with an additional transmit timing error margin (e.g., Figure 10 The Tx timing error margin in the SRS resource 1002 in the coherence status indication 1008, the additional transmission timing error margin is greater than the TxTEG identifier 910 (eg, Figure 10 The transmission timing error margin of the SRS resource 1002 in the TxTEG ID) (for example, Figure 10The Tx timing error margin in the SRS resource 1002 and the Tx timing error margin in the coherence status indication 1008 are shown in FIG.

[0137] At 1310, the UE obtains a coherence indication indicating that at least two additional instances of SRS resources have coherence loss or coherence maintenance. As an example, the transmitting can be performed by component 198. Figure 9 An example of UE 902 obtaining a coherence indication is illustrated.

[0138] UE 902 may use SRS resources (e.g., Figure 10 SRS resource 1002 in the transmission of a pilot signal (eg, Figure 9 912 or a later instance thereof), as similarly noted above, but with the presence of SRS resources (e.g., Figure 10 The coherence loss may be due to another channel being scheduled for frequency division multiplexing (FDM), due to per-CC group delay variation, or due to other reasons. The UE 902 may not receive the SRS resource 1002 in the SRS resource 1002 until it receives the SRS resource 1002 in the SRS resource 1002. Figure 10 The pilot signal (eg, Figure 9 Thus, the UE 902 may be configured to obtain (914) an indication of at least two SRS resources (e.g., Figure 10 Based on obtaining (914) the coherence indication, the UE 902 may be configured to send or provide a coherence status indication 916 (e.g., Figure 10 1008 in ), and the base station 904 and / or the LMF 905 may be configured to receive the coherence status indication. That is, the UE 902 may be configured to send a coherence status indication 916 (e.g., Figure 10 1008 ) to include at least two SRS resources (eg, Figure 10 Information associated with the coherence loss or coherence maintenance of additional instances of the SRS resource 1002 in the packet.

[0139] At 1312 , the UE transmits a coherence status indication including information associated with loss of coherence or maintenance of coherence for the at least two additional instances of the SRS resource. Transmitting may be performed by component 198 , for example. Figure 9 An example of UE 902 performing such sending of a coherence status indication (eg, to base station 904, a network node; to LMF 905, a network entity) is illustrated.

[0140] UE 902 may be configured to communicate with the user via RRC signaling (e.g., Figure 10 1006 ) sends / provides a coherence status indication 916 (eg, Figure 10 In this regard, the coherence state indication 916 (e.g., Figure 10 1008) can be used for UEPA information (e.g., Figure 10 1006). The UE 902 may also be configured to send a message to the LMF 905 (e.g., Figure 10 1006) sends / provides a coherence status indication 916 (eg, Figure 10 In this regard, the UE 902 may be configured to use multiple round trip time (M-RTT) positioning (e.g., Figure 10 1006) and may be configured to signal NR M-RTT measurement information via LPP signaling (e.g., Figure 10 1006 in the example) sends a coherence status indication 916 (e.g., Figure 10 1008 in ).

[0141] Figure 14 1400 is a flow chart of a method of wireless communication in various aspects. The method may be performed by a UE (e.g., UE 104, 404, 502, 902, 1102; device 1604). In some aspects, the method may include combining Figure 11 The aspects described in the communication flow and / or Figures 4 to 8 as well as Figure 10 The method provides PRS aggregation in positioning transmission, which enables the UE to inform the network node (e.g., base station) and / or network entity (e.g., LMF) of coherence status information, and associates the characteristics of the PRS resource with other PRS resources aggregated with it, including intra-band aggregation across CCs, to reduce signaling overhead and RxTx processing (e.g., encoding / decoding).

[0142] At 1402, the UE receives an aggregation configuration from a network node indicating at least two PRS resources to be aggregated in a DL transmission. As an example, the receiving can be performed by component 198. Figure 7 、 Figure 10 、 Figure 11 An example is illustrated where UE 1102 performs such reception of an aggregation configuration from a network node (eg, base station 1104).

[0143] UE 1102 may be configured to receive a signal from base station 1104 (eg, a network node) indicating the PRS resources (eg, Figure 7 PRS aggregation in 706; Figure 10 In various aspects, the aggregation configuration 1106 may indicate at least two PRS resources (eg, Figure 7 PRS aggregation in 706; Figure 10 PRS resource 1004 in.

[0144] At 1404, the UE receives, based on the aggregation configuration, at least one pilot signal from a network entity via at least two PRS resources, wherein the at least two PRS resources are aggregated with a coherence property, wherein based on assistance information indicating that a first PRS resource of the at least two PRS resources is assigned to a TxTEG identifier, a second PRS resource of the at least two PRS resources is associated with the TxTEG identifier if the TxTEG identifier is not assigned to the second PRS resource. As an example, the receiving may be performed by component 198. Figure 7 、 Figure 10 、 Figure 11 An example is illustrated where UE 1102 performs such reception of an aggregation configuration from a network node (eg, base station 1104).

[0145] The UE 1102 may also be configured to transmit data via at least two PRS resources (eg, Figure 7 PRS aggregation in 706; Figure 10 In various aspects, at least two PRS resources (e.g., Figure 7 PRS aggregation in 706; Figure 10 The PRS resources 1004 in the example may be aggregated by coherence attributes. Figure 7 PRS aggregation in 706; Figure 10 The first PRS resource (eg, Figure 10 The PRS resources 1004 in are assigned to the TxTEG identifier (eg, Figure 10 The auxiliary information of the TxTEG ID in the SRS resource 1002 is not included in the TxTEG identifier (for example, Figure 10 The TxTEG ID in the SRS resource 1002 in the TxTEG ID is assigned to at least two PRS resources (eg, Figure 7 PRS aggregation in 706; Figure 10 1004) in the second PRS resource (eg, Figure 10 In the case of the PRS resource 1004 in the example, the second PRS resource (eg, Figure 10 The PRS resource 1004 in the Figure 10 The TxTEG ID in the SRS resource 1002 is associated with the TxTEG ID in the SRS resource 1002.

[0146] Figure 15 1500 is a flow chart of a method of wireless communication in various aspects. The method may be performed by a UE (e.g., UE 104, 404, 502, 902, 1102; device 1604). In some aspects, the method may include combining Figure 11 The aspects described in the communication flow and / or Figures 4 to 8 as well as Figure 10 The method provides PRS aggregation in positioning transmission, which enables the UE to inform the network node (e.g., base station) and / or network entity (e.g., LMF) of coherence status information, and associates the characteristics of the PRS resource with other PRS resources aggregated with it, including intra-band aggregation across CCs, to reduce signaling overhead and RxTx processing (e.g., encoding / decoding).

[0147] At 1502, the UE receives an aggregation configuration from a network node indicating at least two PRS resources to be aggregated in a DL transmission. As an example, the receiving can be performed by component 198. Figure 7 、 Figure 10 、 Figure 11 An example is illustrated where UE 1102 performs such reception of an aggregation configuration from a network node (eg, base station 1104).

[0148] UE 1102 may be configured to receive a signal from base station 1104 (eg, a network node) indicating the PRS resources (eg, Figure 7 PRS aggregation in 706; Figure 10 In various aspects, the aggregation configuration 1106 may indicate at least two PRS resources (eg, Figure 7 PRS aggregation in 706; Figure 10 PRS resource 1004 in.

[0149] In some aspects, the aggregation configuration 1106 may also indicate that the PRS resource may be combined with at least two PRS resources (eg, Figure 7 PRS aggregation in 706; Figure 10 The timing error margin of the PRS resource 1004 in Figure 10In some aspects, the NR-Multi-RTT-MeasElement may be configured to measure the granularity of the NR UE Rx-Tx time difference (nr-UE-RxTxTimeDiff) and / or the NR UE Rx-Tx time difference addition (nr-UE-RxTxTimeDiffAdditional) in the NR Multi-RTT measurement element (NR-Multi-RTT-MeasElement). In various aspects, the UE may select different granularity values ​​for nr-UE-RxTxTimeDiff and / or nr-UE-RxTxTimeDiffAdditional. Regarding reporting mapping, the reporting range of base station (e.g., gNB) Rx-Tx time difference can be defined as -985024*Tc to +985024*Tc. The reporting resolution can be uniform within the reporting range and can be defined as T=Tc*2 k (or Tc*2^k), where "k" can be selected by the base station from the set {0, 1, 2, 3, 4, 5}. In various aspects, the timing constant can be defined as Tc=1 / (Δ-fmax*Nf), where Δ-fmax=480,000 Hz and Nf=4096. In various aspects, the LMF can be configured to provide a recommended resolution parameter timingReportingGranularityFactor, and the base station can be configured to select the parameter "k" based on the timingReportingGranularityFactor, after which the base station can notify the LMF of the selection.

[0150] In some aspects, at least one resolution granularity parameter may be extended to include at least one negative integer power of "k" (eg, -1, -2, etc.), which may be consistent with Tc*2 in DL transmissions. k The timing error margin (for example, Figure 10 The Tx timing error margin in the SRS resource 1002 and the Tx timing error margin in the coherence status indication 1008 are associated with the time. That is, according to various aspects of the present disclosure, "k" can be a negative integer. In some aspects, at least one resolution granularity parameter can be an integer power "k" of 1 (one) or 2 (two), and can be associated with Tc*2 in FR1 DL transmission. k The timing error margin (for example, Figure 10 The Tx timing error margin in the SRS resource 1002 in the coherence status indication 1008 is correlated with time. Thus, aspects herein provide configurations for improved granularity of timing reporting (e.g., for receive-transmit time differences), whereby the described techniques may be used to improve the accuracy of timing measurement and / or reporting.

[0151] At 1504, the UE receives, based on the aggregation configuration, at least one pilot signal from a network entity via at least two PRS resources, wherein the at least two PRS resources are aggregated with a coherence property, wherein based on assistance information indicating that a first PRS resource of the at least two PRS resources is assigned to a TxTEG identifier, a second PRS resource of the at least two PRS resources is associated with the TxTEG identifier if the TxTEG identifier is not assigned to the second PRS resource. As an example, the receiving may be performed by component 198. Figure 7 、 Figure 10 、 Figure 11 An example is illustrated where UE 1102 performs such reception of an aggregation configuration from a network node (eg, base station 1104).

[0152] The UE 1102 may also be configured to transmit data via at least two PRS resources (eg, Figure 7 PRS aggregation in 706; Figure 10 In various aspects, at least two PRS resources (e.g., Figure 7 PRS aggregation in 706; Figure 10 The PRS resources 1004 in the example may be aggregated by coherence attributes. Figure 7 PRS aggregation in 706; Figure 10 The first PRS resource (eg, Figure 10 The PRS resources 1004 in are assigned to the TxTEG identifier (eg, Figure 10 The auxiliary information of the TxTEG ID in the SRS resource 1002 is not included in the TxTEG identifier (for example, Figure 10 The TxTEG ID in the SRS resource 1002 in the TxTEG ID is assigned to at least two PRS resources (eg, Figure 7 PRS aggregation in 706; Figure 10 1004) in the second PRS resource (eg, Figure 10 In the case of the PRS resource 1004 in the example, the second PRS resource (eg, Figure 10The PRS resource 1004 in the Figure 10 The TxTEG ID in the SRS resource 1002 is associated with the TxTEG ID in the SRS resource 1002.

[0153] At 1506 , the UE processes the first PRS resource and the second PRS resource according to the TxTEG identifier without assigning the TxTEG identifier to the second of the PRS resources. Figure 7 、 Figure 10 、 Figure 11 An example is illustrated in which the UE 1102 performs such processing on aggregated PRS resources from a network node (eg, base station 1104).

[0154] The UE 1102 may be configured to process (at 1110) at least two PRS resources (eg, Figure 7 PRS aggregation in 706; Figure 10 The first PRS resource (eg, Figure 10 1004) and a second PRS resource (eg, Figure 10 In various aspects, at least two PRS resources (e.g., Figure 7 PRS aggregation in 706; Figure 10 The first PRS resource (eg, Figure 10 The PRS resources 1004 in the TX_PRS_R_S may be assigned a timing error margin based on the assistance information (eg, Figure 10 1002 in the SRS resource 1002, the Tx timing error margin in the coherence status indication 1008), and in the absence of the timing error margin (eg, Figure 10 The Tx timing error margin in the SRS resource 1002 and the Tx timing error margin in the coherence status indication 1008) are assigned to at least two PRS resources (eg, Figure 7 PRS aggregation in 706; Figure 10 1004) in the second PRS resource (eg, Figure 10 In the case of the PRS resource 1004 in the example, the second PRS resource (e.g. Figure 10 The PRS resources 1004 in the Figure 10 In such aspects, at least two PRS resources (e.g., Figure 7PRS aggregation in 706; Figure 10 In various aspects, at least two PRS resources (e.g., Figure 7 PRS aggregation in 706; Figure 10 The first PRS resource (eg, Figure 10 1004) and a second PRS resource (eg, Figure 10 The PRS resources 1004 in the may be assigned a timing error margin (e.g., Figure 10 In such aspects, the first PRS resource (eg, Figure 10 The PRS resource 1004 in the example may be combined with a second PRS resource (e.g., Figure 10 The PRS resources 1004 in the , and the first PRS resource (eg, Figure 10 1004) and a second PRS resource (eg, Figure 10 The PRS resources 1004 in the RX_PRS_SRC may have the same transmission timing error.

[0155] At 1508, the UE transmits measurement information associated with at least one of a reference signal time difference measurement or a UE RxTx time difference measurement aggregated via at least two PFLs, wherein at least one of the reference signal time difference measurement or the UE RxTx time difference measurement is associated with at least two PRS resources and wherein corresponding additional path information is aggregated via the at least two PFLs. For example, the transmitting may be performed by component 198. UE 1102 may perform such transmitting of measurement information associated with at least one of the reference signal time difference measurement or the UE RxTx time difference measurement to a network node (e.g., base station 1104) and / or to a network entity (e.g., LMF 1105).

[0156] In various aspects, the corresponding additional path information may include at least one of a LOS flag or a NLOS flag, wherein the at least one of the LOS flag or the NLOS flag is assigned to a first PFL of the at least two PFLs or is associated with a second PFL if the at least one of the LOS flag or the NLOS flag is not assigned to the second PFL of the at least two PFLs, such as Figure 15 This is illustrated in 1508 of flowchart 1500 in FIG.

[0157] UE 1102 may be configured to transmit measurement information associated with at least one of a reference signal time difference measurement or a UE receive-transmit (RxTx) time difference measurement that may be aggregated across at least two positioning frequency layers (PFLs). In such aspects, at least one of the reference signal time difference measurement or the UE RxTx time difference measurement may be associated with at least two PRS resources, as described herein, and corresponding additional path information may be aggregated across the at least two PFLs. In some aspects, the corresponding additional path information may include at least one of a line-of-sight (LOS) flag or a non-line-of-sight (NLOS) flag. The LOS flag and / or the NLOS flag may be assigned to a first of the at least two PFLs, or may be associated with a second of the at least two PFLs without assigning the LOS flag and / or the NLOS flag to the second PFL. Thus, by extending the association of characteristics of aggregated resources to aggregation across PFLs, various aspects herein may be used to improve RSTD measurements and UE RxTx time difference measurements, as well as reduce signaling overhead.

[0158] Figure 1616 is a diagram illustrating an example of a hardware implementation for an apparatus 1604. The apparatus 1604 may be a UE, a component of a UE, or may implement UE functionality. In some aspects, the apparatus 1604 may include a cellular baseband processor 1624 (also referred to as a modem) coupled to one or more transceivers 1622 (e.g., a cellular RF transceiver). The cellular baseband processor 1624 may include on-chip memory 1624′. In some aspects, the apparatus 1604 may also include one or more subscriber identity module (SIM) cards 1620 and an application processor 1606 coupled to a secure digital (SD) card 1608 and a screen 1610. The application processor 1606 may include on-chip memory 1606′. In some aspects, device 1604 may also include a Bluetooth module 1612, a WLAN module 1614, an SPS module 1616 (e.g., a GNSS module), one or more sensor modules 1618 (e.g., a barometric pressure sensor / altimeter; a motion sensor such as an inertial measurement unit (IMU), a gyroscope, and / or an accelerometer; light detection and ranging (LIDAR), radio-aided detection and ranging (RADAR), sound navigation and ranging (SONAR), a magnetometer, audio, and / or other technologies for positioning), an additional memory module 1626, a power supply 1630, and / or a camera 1632. The Bluetooth module 1612, the WLAN module 1614, and the SPS module 1616 may include an on-chip transceiver (TRX) (or, in some cases, only a receiver (RX)). The Bluetooth module 1612, the WLAN module 1614, and the SPS module 1616 may include their own dedicated antennas and / or utilize antenna 1680 for communication. The cellular baseband processor 1624 communicates with the UE 104 and / or RUs associated with the network entity 1602 via the transceiver 1622 via one or more antennas 1680. The cellular baseband processor 1624 and the application processor 1606 may each include computer-readable media / memory 1624', 1606', respectively. The additional memory module 1626 may also be considered a computer-readable medium / memory. Each computer-readable medium / memory 1624', 1606', 1626 may be non-transitory. The cellular baseband processor 1624 and the application processor 1606 are each responsible for general processing, including executing software stored on the computer-readable medium / memory. When executed by the cellular baseband processor 1624 / application processor 1606, the software enables the cellular baseband processor 1624 / application processor 1606 to perform the various functions described above. The computer-readable medium / memory may also be used to store data manipulated by the cellular baseband processor 1624 / application processor 1606 when executing the software.The cellular baseband processor 1624 / application processor 1606 may be a component of the UE 350 and may include the memory 360 and / or at least one of the TX processor 368, the RX processor 356, and the controller / processor 359. In one configuration, the device 1604 may be a processor chip (modem and / or application) and include only the cellular baseband processor 1624 and / or the application processor 1606, while in another configuration, the device 1604 may be the entire UE (e.g., see. Figure 3 UE 350 ) and includes additional modules of device 1604.

[0159] As discussed above, component 198 can be configured to receive an aggregation configuration from a network node indicating at least two SRS resources to be aggregated in an UL transmission. Component 198 can be configured to send at least one pilot signal via the at least two SRS resources based on the aggregation configuration, wherein the at least two SRS resources are aggregated with a coherence property in the same set of OFDM symbols, wherein the at least two SRS resources are associated with at least one of the following: the same path loss parameter, the same transmit power spectral density, the same spatial relation reference signal, the same comb size, or at least one same time domain characteristic. Component 198 can also be configured to send at least one additional pilot signal via additional instances of the at least two SRS resources. Component 198 can be configured to obtain a coherence indication indicating that the additional instances of the at least two SRS resources have a loss of coherence or a maintenance of coherence. Component 198 can be configured to send a coherence status indication comprising information associated with a loss of coherence or a maintenance of coherence for the additional instances of the at least two SRS resources. In certain aspects, component 198 may be configured to receive, from a network node, an aggregation configuration indicating at least two PRS resources to be aggregated in a DL transmission. Component 198 may be configured to receive, based on the aggregation configuration, at least one pilot signal from a network entity via the at least two PRS resources, wherein the at least two PRS resources are aggregated with a coherence property, wherein based on assistance information indicating that a first PRS resource of the at least two PRS resources is assigned to a TxTEG identifier, a second PRS resource of the at least two PRS resources is associated with the TxTEG identifier if the TxTEG identifier is not assigned to the second PRS resource. Component 198 may also be configured to process the first PRS resource and the second PRS resource based on the TxTEG identifier if the TxTEG identifier is not assigned to the second PRS resource of the at least two PRS resources. Component 198 may also be configured to transmit measurement information associated with at least one of a reference signal time difference measurement or a UE RxTx time difference measurement aggregated via at least two PFLs, wherein at least one of the reference signal time difference measurement or the UE RxTx time difference measurement is associated with at least two PRS resources, and wherein corresponding additional path information is aggregated via the at least two PFLs. Component 198 may be configured to transmit a TxTEG identifier assigned to a first SRS resource of the at least two SRS resources, wherein if a TxTEG identifier is not assigned to a second SRS resource of the at least two SRS resources, the second SRS resource is associated with the TxTEG identifier. Component 198 may also be configured to perform a combined Figures 12 to 15 Any of the aspects described in the flowcharts of any of the and / or by Figures 5 to 111604 . Component 198 may be within the cellular baseband processor 1624, the application processor 1606, or both the cellular baseband processor 1624 and the application processor 1606. Component 198 may be one or more hardware components specifically configured to perform the recited processes / algorithms, implemented by one or more processors configured to perform the recited processes / algorithms, stored in a computer-readable medium for implementation by one or more processors, or some combination thereof. As shown, the apparatus 1604 may include a variety of components configured for various functions. In one configuration, the apparatus 1604 (and in particular the cellular baseband processor 1624 and / or the application processor 1606) may include means for receiving, from a network node, an aggregation configuration indicating at least two SRS resources to be aggregated in an UL transmission. In this configuration, the apparatus 1604 (and in particular the cellular baseband processor 1624 and / or the application processor 1606) may further include means for transmitting at least one pilot signal via at least two SRS resources based on an aggregation configuration, wherein the at least two SRS resources are aggregated with a coherence property in the same set of OFDM symbols, wherein the at least two SRS resources are associated with at least one of the following: a same path loss parameter, a same transmit power spectral density, a same spatial relation reference signal, a same comb size, or at least one same time-domain characteristic. In one configuration, the apparatus 1604 (and in particular the cellular baseband processor 1624 and / or the application processor 1606) may further include means for transmitting at least one additional pilot signal via additional instances of the at least two SRS resources. In one configuration, the apparatus 1604 (and in particular the cellular baseband processor 1624 and / or the application processor 1606) may further include means for obtaining a coherence indication indicating that the additional instances of the at least two SRS resources have a loss of coherence or a maintenance of coherence. In one configuration, the apparatus 1604 (and in particular the cellular baseband processor 1624 and / or the application processor 1606) may include means for transmitting a coherence status indication including information associated with loss of coherence or maintenance of coherence for additional instances of at least two SRS resources. In one configuration, the apparatus 1604 (and in particular the cellular baseband processor 1624 and / or the application processor 1606) may include means for receiving, from a network node, an aggregation configuration indicating at least two PRS resources to be aggregated in a DL transmission.In this configuration, the apparatus 1604 (and in particular the cellular baseband processor 1624 and / or the application processor 1606) may include means for receiving at least one pilot signal from a network entity via at least two PRS resources based on an aggregation configuration, wherein the at least two PRS resources are aggregated with a coherence property, wherein based on assistance information indicating that a first PRS resource of the at least two PRS resources is assigned to a TxTEG identifier, if the TxTEG identifier is not assigned to a second PRS resource of the at least two PRS resources, the second PRS resource is associated with the TxTEG identifier. In one configuration, the apparatus 1604 (and in particular the cellular baseband processor 1624 and / or the application processor 1606) may include means for processing the first PRS resource and the second PRS resource according to the TxTEG identifier if the TxTEG identifier is not assigned to the second PRS resource of the at least two PRS resources. In one configuration, the apparatus 1604 (and in particular the cellular baseband processor 1624 and / or the application processor 1606) may include means for transmitting measurement information associated with at least one of a reference signal time difference measurement or a UE RxTx time difference measurement aggregated via at least two PFLs, wherein the at least one of the reference signal time difference measurement or the UE RxTx time difference measurement is associated with at least two PRS resources, and wherein corresponding additional path information is aggregated via the at least two PFLs. In one configuration, the apparatus 1604 (and in particular the cellular baseband processor 1624 and / or the application processor 1606) may include means for transmitting a TxTEG identifier assigned to a first SRS resource of the at least two SRS resources, wherein if a TxTEG identifier is not assigned to a second SRS resource of the at least two SRS resources, the second SRS resource is associated with the TxTEG identifier. This means may be component 198 of the apparatus 1604 configured to perform the functions recited by this means. As described above, the device 1604 may include the TX processor 368, the RX processor 356, and the controller / processor 359. Thus, in one configuration, the components may be the TX processor 368, the RX processor 356, and / or the controller / processor 359 configured to perform the functions recited by the components.

[0160] Figure 17Figure 1700 illustrates an example hardware implementation for a network entity 1702. Network entity 1702 may be a base station (BS), a component of a BS, or may implement BS functionality. Network entity 1702 may include at least one of a CU 1710, a DU 1730, or a RU 1740. For example, depending on the layer functionality handled by component 199, network entity 1702 may include a CU 1710; both the CU 1710 and the DU 1730; each of the CU 1710, the DU 1730, and the RU 1740; the DU 1730; both the DU 1730 and the RU 1740; or the RU 1740. CU 1710 may include a CU processor 1712. CU processor 1712 may include on-chip memory 1712′. In some aspects, CU 1710 may also include an additional memory module 1714 and a communication interface 1718. The CU 1710 communicates with the DU 1730 via a midhaul link, such as an F1 interface. The DU 1730 may include a DU processor 1732. The DU processor 1732 may include on-chip memory 1732′. In some aspects, the DU 1730 may also include an additional memory module 1734 and a communication interface 1738. The DU 1730 communicates with the RU 1740 via a fronthaul link. The RU 1740 may include a RU processor 1742. The RU processor 1742 may include on-chip memory 1742′. In some aspects, the RU 1740 may also include an additional memory module 1744, one or more transceivers 1746, an antenna 1780, and a communication interface 1748. The RU 1740 communicates with the UE 104. On-chip memories 1712', 1732', 1742' and additional memory modules 1714, 1734, 1744 can each be considered a computer-readable medium / memory. Each computer-readable medium / memory can be non-transitory. Each of processors 1712, 1732, 1742 is responsible for general processing, including executing software stored on the computer-readable medium / memory. When executed by the corresponding processor, the software causes the processor to perform the various functions described above. The computer-readable medium / memory can also be used to store data manipulated by the processor when executing the software.

[0161] As discussed above, component 199 can be configured to transmit, for the UE, an aggregation configuration indicating at least two SRS resources to be aggregated in an UL transmission. Component 199 can be configured to receive, based on the aggregation configuration, at least one pilot signal via at least two SRS resources, wherein the at least two SRS resources are aggregated with a coherence property in the same set of OFDM symbols, wherein the at least two SRS resources are associated with at least one of the following: the same path loss parameter, the same transmit power spectral density, the same spatial relation reference signal, the same comb size, or at least one same time domain characteristic. Component 199 can also be configured to receive at least one additional pilot signal via additional instances of the at least two SRS resources. Component 199 can be configured to receive a coherence status indication comprising information associated with a loss of coherence or maintenance of coherence for the additional instances of the at least two SRS resources. Component 199 may be configured to receive a TxTEG identifier assigned to a first SRS resource of at least two SRS resources, wherein a second SRS resource of the at least two SRS resources is associated with the TxTEG identifier if the TxTEG identifier is not assigned to the second SRS resource. In certain aspects, component 199 may be configured to transmit, to a UE, an aggregation configuration indicating at least two PRS resources to be aggregated in a DL transmission. Component 199 may be configured to transmit, as an example of a network entity and from the network entity, at least one pilot signal via the at least two PRS resources based on the aggregation configuration, wherein the at least two PRS resources are aggregated with a coherence property, wherein a second PRS resource of the at least two PRS resources is associated with the TxTEG identifier if the TxTEG identifier is not assigned to the second PRS resource based on assistance information indicating that the first PRS resource of the at least two PRS resources is assigned to the TxTEG identifier. Component 199 may also be configured to receive measurement information associated with at least one of a reference signal time difference measurement or a UE RxTx time difference measurement aggregated via at least two PFLs, wherein at least one of the reference signal time difference measurement or the UE RxTx time difference measurement is associated with at least two PRS resources, and wherein corresponding additional path information is aggregated via the at least two PFLs. Component 199 may also be configured to perform a combined Figures 12 to 15 Any of the aspects described in the flowcharts of any of the and / or by Figures 5 to 111702. Component 199 may be within one or more processors of one or more of CU 1710, DU 1730, and RU 1740. Component 199 may be one or more hardware components specifically configured to perform the recited processes / algorithms, implemented by one or more processors configured to perform the recited processes / algorithms, stored in a computer-readable medium for implementation by one or more processors, or some combination thereof. Network entity 1702 may include a variety of components configured for various functions. In one configuration, network entity 1702 may include means for sending, to a UE, an aggregation configuration indicating at least two SRS resources to be aggregated in an UL transmission. In one configuration, the network entity 1702 may include means for receiving at least one pilot signal via at least two SRS resources based on an aggregation configuration, wherein the at least two SRS resources are aggregated with a coherence property in a same set of OFDM symbols, wherein the at least two SRS resources are associated with at least one of the following: a same path loss parameter, a same transmit power spectral density, a same spatial relation reference signal, a same comb size, or at least one same time domain characteristic. In one configuration, the network entity 1702 may include means for receiving at least one additional pilot signal via additional instances of the at least two SRS resources. In one configuration, the network entity 1702 may include means for receiving a coherence status indication comprising information associated with a loss of coherence or maintenance of coherence for the additional instances of the at least two SRS resources. In one configuration, the network entity 1702 may include means for receiving a TxTEG identifier assigned to a first SRS resource of at least two SRS resources, wherein the second SRS resource of the at least two SRS resources is associated with the TxTEG identifier if the TxTEG identifier is not assigned to the second SRS resource. In one configuration, the network entity 1702 may include means for transmitting, to a UE, an aggregation configuration indicating at least two PRS resources to be aggregated in a DL transmission. In one configuration, the network entity 1702 may include means for transmitting, as an example of the network entity and from the network entity, at least one pilot signal via the at least two PRS resources based on the aggregation configuration, wherein the at least two PRS resources are aggregated with a coherence property, wherein the second PRS resource of the at least two PRS resources is associated with the TxTEG identifier if the TxTEG identifier is not assigned to the second PRS resource based on assistance information indicating that the first PRS resource of the at least two PRS resources is assigned to the TxTEG identifier.In one configuration, the network entity 1702 may include means for receiving measurement information associated with at least one of a reference signal time difference measurement or a UE RxTx time difference measurement aggregated via at least two PFLs, wherein at least one of the reference signal time difference measurement or the UE RxTx time difference measurement is associated with at least two PRS resources, and wherein corresponding additional path information is aggregated via the at least two PFLs. The means may be a component 199 of the network entity 1702 configured to perform the functions recited by the means. As described above, the network entity 1702 may include a TX processor 316, an RX processor 370, and a controller / processor 375. Thus, in one configuration, the means may be the TX processor 316, the RX processor 370, and / or the controller / processor 375 configured to perform the functions recited by the means.

[0162] Figure 18 Diagram 1800 illustrates an example hardware implementation for a network entity 1860. In one example, network entity 1860 may be within core network 120. Network entity 1860 may include a network processor 1812. Network processor 1812 may include on-chip memory 1812′. In some aspects, network entity 1860 may also include an additional memory module 1814. Network entity 1860 communicates with CU 1802 via a network interface 1880, either directly (e.g., a backhaul link) or indirectly (e.g., via a RIC). On-chip memory 1812′ and additional memory module 1814 may each be considered a computer-readable medium / memory. Each computer-readable medium / memory may be non-transitory. Processor 1812 is responsible for general processing, including executing software stored on the computer-readable medium / memory. This software, when executed by the corresponding processor, enables the processor to perform the various functions described above. The computer-readable medium / memory may also be used to store data manipulated by the processor when executing the software.

[0163] As discussed above, component 199 can be configured to transmit, for the UE, an aggregation configuration indicating at least two SRS resources to be aggregated in an UL transmission. Component 199 can be configured to receive, based on the aggregation configuration, at least one pilot signal via at least two SRS resources, wherein the at least two SRS resources are aggregated with a coherence property in the same set of OFDM symbols, wherein the at least two SRS resources are associated with at least one of the following: the same path loss parameter, the same transmit power spectral density, the same spatial relation reference signal, the same comb size, or at least one same time domain characteristic. Component 199 can also be configured to receive at least one additional pilot signal via additional instances of the at least two SRS resources. Component 199 can be configured to receive a coherence status indication comprising information associated with a loss of coherence or maintenance of coherence for the additional instances of the at least two SRS resources. Component 199 may be configured to receive a TxTEG identifier assigned to a first SRS resource of at least two SRS resources, wherein a second SRS resource of the at least two SRS resources is associated with the TxTEG identifier if the TxTEG identifier is not assigned to the second SRS resource. In certain aspects, component 199 may be configured to transmit, to a UE, an aggregation configuration indicating at least two PRS resources to be aggregated in a DL transmission. Component 199 may be configured to transmit, as an example of a network entity and from the network entity, at least one pilot signal via the at least two PRS resources based on the aggregation configuration, wherein the at least two PRS resources are aggregated with a coherence property, wherein a second PRS resource of the at least two PRS resources is associated with the TxTEG identifier if the TxTEG identifier is not assigned to the second PRS resource based on assistance information indicating that the first PRS resource of the at least two PRS resources is assigned to the TxTEG identifier. Component 199 may also be configured to receive measurement information associated with at least one of a reference signal time difference measurement or a UE RxTx time difference measurement aggregated via at least two PFLs, wherein at least one of the reference signal time difference measurement or the UE RxTx time difference measurement is associated with at least two PRS resources, and wherein corresponding additional path information is aggregated via the at least two PFLs. Component 199 may also be configured to perform a combined Figures 12 to 15 Any of the aspects described in the flowcharts of any of the and / or by Figures 5 to 11Any of the aspects performed by the base station / LMF in any of the . Component 199 may be within processor 1812. Component 199 may be one or more hardware components specifically configured to perform the recited processes / algorithms, implemented by one or more processors configured to perform the recited processes / algorithms, stored in a computer-readable medium for implementation by one or more processors, or some combination thereof. The network entity 1860 may include a variety of components configured for various functions. In one configuration, the network entity 1860 may include a component for sending an aggregation configuration to the UE indicating at least two SRS resources to be aggregated in an UL transmission. In one configuration, the network entity 1860 may include a component for receiving at least one pilot signal via at least two SRS resources based on the aggregation configuration, wherein the at least two SRS resources are aggregated with a coherence property in the same set of OFDM symbols, wherein the at least two SRS resources are associated with at least one of the following: the same path loss parameter, the same transmit power spectral density, the same spatial relation reference signal, the same comb size, or at least one same time domain characteristic. In one configuration, the network entity 1860 may include means for receiving at least one additional pilot signal via the additional instances of the at least two SRS resources. In one configuration, the network entity 1860 may include means for receiving a coherence status indication including information associated with loss of coherence or maintenance of coherence for the additional instances of the at least two SRS resources. In one configuration, the network entity 1860 may include means for receiving a TxTEG identifier assigned to a first SRS resource of the at least two SRS resources, wherein the second SRS resource of the at least two SRS resources is associated with the TxTEG identifier if the TxTEG identifier is not assigned to the second SRS resource. In one configuration, the network entity 1860 may include means for sending, to the UE, an aggregation configuration indicating at least two PRS resources to be aggregated in a DL transmission. In one configuration, the network entity 1860 may include means for transmitting, as an instance of and from the network entity, at least one pilot signal via at least two PRS resources based on an aggregation configuration, wherein the at least two PRS resources are aggregated with a coherence property, wherein based on assistance information indicating that a first PRS resource of the at least two PRS resources is assigned to a TxTEG identifier, without assigning the TxTEG identifier to a second PRS resource of the at least two PRS resources, the second PRS resource is associated with the TxTEG identifier.In one configuration, the network entity 1860 may include means for receiving measurement information associated with at least one of a reference signal time difference measurement or a UE RxTx time difference measurement aggregated via at least two PFLs, wherein at least one of the reference signal time difference measurement or the UE RxTx time difference measurement is associated with at least two PRS resources, and wherein corresponding additional path information is aggregated via the at least two PFLs. The means may be component 199 of the network entity 1860 configured to perform the functions recited by the means.

[0164] A wireless communication network may implement positioning measurements and operations to locate wireless devices. The wireless communication network may utilize pilot signals transmitted via SRS resources and / or PRS resources. These SRS resources and / or PRS resources may have characteristics such as a transmit timing error group (TxTEG) identifier, a transmit timing error margin, and a transmit timing error. To improve the efficiency of positioning measurements and operations, reference signal resources may be aggregated for transmission. However, the coherence of transmissions of aggregated reference signal resources may affect the accuracy of positioning information and operations. A UE may not be aware of the loss of coherence in the aggregated reference signal resources until transmissions via the aggregated reference signal resources have already occurred. Consequently, timing and positioning accuracy on the network side may be affected. Furthermore, the signaling overhead for reference signal resource characteristics (e.g., TxTEG identifier, transmit timing error margin, transmit timing error, etc.) may include additional processing (e.g., encoding / decoding) and power consumption for both the transmitter and receiver.

[0165] Various aspects of positioning operations for a wireless device (e.g., for aggregation of SRS and PRS resources in positioning transmissions) are described to enable the wireless device to more efficiently signal positioning information via aggregation, coherence reporting, and association of reference signaling resource characteristics. In one example, a UE may receive an aggregation configuration indicating at least two SRS resources to be aggregated in an uplink transmission and, based on the aggregation configuration, may transmit at least one pilot signal via the at least two SRS resources. The at least two SRS resources may be aggregated with coherence properties within the same set of OFDM symbols, and the at least two SRS resources may be associated with at least one of the following: a common path loss parameter, a common transmit power spectral density, a common spatial relation reference signal, a common comb size, or at least one common time domain characteristic. The path loss parameter may be associated with a cross-CC path loss reference indicator, and the at least two SRS resources may be transmitted along with the cross-CC path loss reference indicator. The common path loss parameter may be associated with the CC with the lowest CC index, and / or the common path loss parameter may be associated with the CC serving as the PCell of the UE. In another example, the UE may receive an aggregation configuration indicating at least two PRS resources to be aggregated in a DL transmission from a network node, and may receive at least one pilot signal from a network entity (e.g., a location management function (LMF)) via the at least two PRS resources based on the aggregation configuration. The at least two PRS resources may be aggregated based on a coherence property, and based on the auxiliary information indicating that a first PRS resource of the at least two PRS resources is assigned to a TxTEG identifier, a second PRS resource of the at least two PRS resources may be associated with the TxTEG identifier if the TxTEG identifier is not assigned to the second PRS resource.

[0166] In some examples, by reporting coherence status information for aggregated reference signal resources and associating TxTEG identifiers and timing error margins with unassigned or untagged reference signal resources, the described techniques can be used to more efficiently transmit signals on reference signal resources, thereby improving bandwidth (e.g., two aggregated resources of equal size effectively double the transmit bandwidth) and supporting cross-CC path loss reference indication for intra-band aggregation, while reducing signaling overhead for TxTEG identifiers and timing error margins, and providing coherence status information to network nodes (e.g., base stations) and network entities (e.g., LMFs) via indications of aggregated reference signal resources that maintain and / or lose coherence. Additionally, by providing configuration with improved granularity for timing reporting (e.g., for receive-transmit time difference), the described techniques can be used to improve the accuracy of timing measurement / reporting, and by extending the association of characteristics of aggregated resources to aggregation in PFLs, the described techniques can be used to improve RSTD measurements and UE RxTx time difference measurements and reduce signaling overhead.

[0167] It should be understood that the specific order or hierarchy of blocks in the disclosed process / flowchart is merely illustrative of an exemplary method. It should be understood that the specific order or hierarchy of blocks in the process / flowchart may be rearranged based on design preferences. In addition, some blocks may be combined or omitted. The accompanying method claims provide elements of the various blocks in a sample order, but are not limited to the specific order or hierarchy provided.

[0168] The foregoing description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. Therefore, the claims are not limited to the aspects described herein, but should be given the full scope consistent with the language claims. Unless otherwise specified, reference to an element in the singular does not mean "one and only one", but "one or more". Terms such as "if", "when" and "while" do not imply a direct temporal relationship or reaction. That is, these phrases, such as "when...", do not mean immediate action in response to the occurrence of an action or during the occurrence of an action, but simply imply that if the conditions are met, the action will occur, but there is no need for a specific or immediate time limit for the action to occur. The word "exemplary" is used herein to mean "used as an example, instance, or illustration". Any aspect described as "exemplary" herein is not necessarily interpreted as being preferred or having advantages over other aspects. Unless otherwise specified, the term "some" refers to one or more. Combinations such as “at least one of A, B, or C,” “one or more of A, B, or C,” “at least one of A, B, and C,” “one or more of A, B, and C,” and “A, B, C, or any combination thereof” include any combination of A, B, and / or C, which may include multiple As, multiple Bs, or multiple Cs. Specifically, combinations such as “at least one of A, B, or C,” “one or more of A, B, or C,” “at least one of A, B, and C,” “one or more of A, B, and C,” and “A, B, C, or any combination thereof” may be only A, only B, only C, A and B, A and C, B and C, or A, B, and C, where any such combination may include one or more members of A, B, or C. A set should be interpreted as a set of elements, where the number of elements is one or more. Thus, for a set of X, X will include one or more elements. If a first device receives data from or sends data to a second device, the data may be received / sent directly between the first and second devices or indirectly between the first and second devices via a collection of devices. A device configured to "output" data (such as a transmission, signal, or message) may, for example, transmit the data using a transceiver or transmit the data to the device that transmitted the data. A device configured to "obtain" data (such as a transmission, signal, or message) may, for example, receive the data using a transceiver or obtain the data from the device that received the data. Information stored in a memory includes instructions and / or data. All structural and functional equivalents to the elements of the various aspects described throughout this disclosure that are or later become known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be encompassed by the claims.Furthermore, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly recited in the claims. Words such as "module," "mechanism," "element," and "device" are not intended to replace the word "component." Thus, no claim element is to be construed as part-plus-function unless the element is explicitly recited using the phrase "means for..."

[0169] As used herein, the phrase "based on" should not be interpreted as referring to a closed set of information, one or more conditions, one or more factors, etc. In other words, the phrase "based on A" (where "A" can be information, a condition, a factor, etc.) should be interpreted as "based at least on A" unless specifically stated differently.

[0170] The following aspects are merely illustrative and may be combined with other aspects or teachings described herein without limitation.

[0171] Aspect 1 is a method for wireless communication at a user equipment (UE), the method comprising: receiving an aggregation configuration from a network node indicating at least two sounding reference signal (SRS) resources to be aggregated in an uplink (UL) transmission; and based on the aggregation configuration, sending at least one pilot signal via the at least two SRS resources, wherein the at least two SRS resources are aggregated with a coherence property in the same set of orthogonal frequency division multiplexing (OFDM) symbols, and wherein the at least two SRS resources are associated with at least one of the following: the same path loss parameter, the same transmit power spectral density, the same spatial relation reference signal, the same comb tooth size, or at least one same time domain characteristic.

[0172] Aspect 2 is a method according to aspect 1, wherein the same path loss parameter is associated with a cross-component carrier (CC) path loss reference indication, and wherein sending the at least two SRS resources includes sending the at least two SRS resources with the cross-CC path loss reference indication; wherein the same path loss parameter is associated with the CC with the lowest CC index; and / or wherein the same path loss parameter is capable of being associated with a CC that is the Pcell of the UE.

[0173] Aspect 3 is a method according to any one of Aspects 1 and 2, the method further comprising: sending additional instances of the at least two SRS resources; obtaining a coherence indication indicating that the additional instances of the at least two SRS resources have coherence loss or coherence maintenance; and sending a coherence status indication, the coherence status indication including information associated with the coherence loss or the coherence maintenance of the additional instances of the at least two SRS resources.

[0174] Aspect 4 is a method according to aspect 3, wherein sending the coherence status indication is associated with uplink time difference of arrival (U-TDOA) and includes sending the coherence status indication in an information element (IE) for UE positioning assistance information via radio resource control (RRC) signaling for the network node; or wherein the UE is associated with multiple round trip time (M-RTT) positioning, wherein sending the coherence status indication includes sending the coherence status indication in new radio (NR) M-RTT signal measurement information via long term evolution (LTE) positioning protocol (LPP) signaling for a location management function (LMF).

[0175] Aspect 5 is a method according to Aspect 4, wherein sending the coherence status indication includes at least one of the following items: the coherence status indication as at least one of independent transmission or periodic transmission; the coherence status indication including a transmission timestamp associated with the coherence loss or the coherence maintenance of the at least two SRS resources; or the coherence status indication including error margin information associated with at least one first transmission timing error margin between the at least two SRS resources.

[0176] Aspect 6 is a method according to aspect 5, wherein the at least one first transmit timing error margin between the at least two SRS resources is equivalent to at least one second transmit timing error margin associated with a transmit timing error group (TxTEG) identifier assigned to a first SRS resource of the at least two SRS resources, or is a subset of the at least one second transmit timing error margin, wherein the at least one first transmit timing error margin includes a tc0 enumeration.

[0177] Aspect 7 is a method according to any one of aspects 1 to 6, the method further comprising: sending a transmit timing error group (TxTEG) identifier assigned to the first SRS resource among the at least two SRS resources, wherein, if the TxTEG identifier is not assigned to the second SRS resource among the at least two SRS resources, the second SRS resource is associated with the TxTEG identifier.

[0178] Aspect 8 is a method according to aspect 7, wherein sending the TxTEG identifier includes: sending at least one transmit timing error margin assigned to the first SRS resource among the at least two SRS resources, wherein the second SRS resource is associated with the at least one transmit timing error margin without assigning the at least one transmit timing error margin to the second SRS resource among the at least two SRS resources, wherein the at least two SRS resources have a transmit timing mismatch between them.

[0179] Aspect 9 is a method according to aspect 7, wherein sending the TxTEG identifier includes: sending a transmission timing error margin assigned to the first SRS resource and the second SRS resource of the at least two SRS resources, wherein the first SRS resource is aggregated with the second SRS resource, and wherein the first SRS resource and the second SRS resource have the same transmission timing error.

[0180] Aspect 10 is a method according to aspect 9, wherein, for the network node, sending the at least one pilot signal via the at least two SRS resources based on the aggregation configuration includes: for the network node, sending at least one additional pilot signal via at least one additional SRS resource based on the aggregation configuration, wherein the at least one additional SRS resource is assigned an additional TxTEG identifier different from the TxTEG identifier, and wherein the at least one additional SRS resource is assigned an additional transmission timing error margin that is greater than the transmission timing error margin.

[0181] Aspect 11 is the method of aspect 10, wherein the first SRS resource and the second SRS resource are assigned a phase error group (PEG) identifier that is different from an additional PEG identifier assigned to the at least one additional SRS resource.

[0182] Aspect 12 is a method of wireless communication at a user equipment (UE), the method comprising: receiving an aggregation configuration from a network node indicating at least two positioning reference signal (PRS) resources to be aggregated in a downlink (DL) transmission; and receiving at least one pilot signal from a network entity via the at least two PRS resources based on the aggregation configuration, wherein the at least two PRS resources are aggregated with a coherence property, wherein based on assistance information indicating that a first PRS resource of the at least two PRS resources is assigned to a transmit timing error group (TxTEG) identifier, without assigning the TxTEG identifier to a second PRS resource of the at least two PRS resources, the second PRS resource is associated with the TxTEG identifier.

[0183] Aspect 13 is the method according to aspect 12, further comprising: processing the first PRS resource and the second PRS resource according to the TxTEG identifier without assigning the TxTEG identifier to the second PRS resource of the at least two PRS resources.

[0184] Aspect 14 is a method according to any one of aspects 12 and 13, wherein the first PRS resource of the at least two PRS resources is assigned a timing error margin based on the auxiliary information, wherein if the timing error margin is not assigned to the second PRS resource of the at least two PRS resources, the second PRS resource is associated with the timing error margin, wherein the at least two PRS resources have a transmit timing mismatch therebetween.

[0185] Aspect 15 is a method according to any one of aspects 12 and 13, wherein the first PRS resource and the second PRS resource of the at least two PRS resources are assigned a timing error margin, wherein the first PRS resource is aggregated with the second PRS resource, and wherein the first PRS resource and the second PRS resource have the same transmission timing error.

[0186] Aspect 16 is a method according to aspect 15, wherein receiving the at least one pilot signal from the network node via the at least two PRS resources based on the aggregation configuration includes: receiving at least one additional pilot signal from the network node via at least one additional PRS resource based on the aggregation configuration, wherein the at least one additional PRS resource is assigned an additional TxTEG identifier different from the TxTEG identifier, and wherein the at least one additional PRS resource is assigned an additional timing error margin that is greater than the timing error margin.

[0187] Aspect 17 is a method according to aspect 16, wherein the first PRS resource and the second PRS resource are assigned a phase error group (PEG) identifier that is different from an additional PEG identifier assigned to the at least one additional PRS resource.

[0188] Aspect 18 is a method according to any one of Aspects 12 to 17, wherein the aggregation configuration further indicates at least one resolution granularity parameter associated with the timing error margin of the at least two PRS resources; wherein the at least one resolution granularity parameter is a negative integer power k associated with the time of the timing error margin of Tc*2^k in the DL transmission; or wherein the at least one resolution granularity parameter is an integer power k of 1 or 2 and is associated with the time of the timing error margin of Tc*2^k in the frequency range 1 (FR1) DL transmission.

[0189] Aspect 19 is a method according to any one of aspects 12 to 18, the method further comprising: sending measurement information associated with at least one of a reference signal time difference measurement or a UE receive-transmit (RxTx) time difference measurement aggregated via at least two positioning frequency layers (PFLs), wherein the at least one of the reference signal time difference measurement or the UE RxTx time difference measurement is associated with the at least two PRS resources, and wherein the corresponding additional path information is aggregated via the at least two PFLs.

[0190] Aspect 20 is a method according to aspect 19, wherein the corresponding additional path information includes at least one of a line-of-sight (LOS) flag or a non-line-of-sight (NLOS) flag, wherein the at least one of the LOS flag or the NLOS flag is assigned to a first PFL of the at least two PFLs, or is associated with a second PFL of the at least two PFLs if the at least one of the LOS flag or the NLOS flag is not assigned to the second PFL.

[0191] Aspect 21 is an apparatus for wireless communication, comprising: means for implementing any one of aspects 1 to 11.

[0192] Aspect 22 is a computer-readable medium (eg, non-transitory computer-readable medium) storing computer-executable code, which, when executed by at least one processor, causes the at least one processor to implement any one of aspects 1 to 11.

[0193] Aspect 23 is an apparatus for wireless communication at a network node. The apparatus includes: a memory; and at least one processor, the at least one processor being coupled to the memory and configured to implement any one of aspects 1 to 11 based at least in part on information stored in the memory.

[0194] Aspect 24 is the apparatus of aspect 23, further comprising: at least one of a transceiver or an antenna coupled to the at least one processor.

[0195] Aspect 25 is an apparatus for wireless communication, comprising: means for implementing any one of aspects 12 to 20.

[0196] Aspect 26 is a computer-readable medium (eg, non-transitory computer-readable medium) storing computer-executable code that, when executed by at least one processor, causes the at least one processor to implement any one of aspects 12 to 20 .

[0197] Aspect 27 is an apparatus for wireless communication at a network node. The apparatus includes: a memory; and at least one processor, the at least one processor being coupled to the memory and configured to implement any one of aspects 12 to 20 based at least in part on information stored in the memory.

[0198] Aspect 28 is the apparatus of aspect 25, further comprising: at least one of a transceiver or an antenna coupled to the at least one processor.

[0199] Aspect 29 is a method of wireless communication at a user equipment (UE), the method comprising: receiving an aggregation configuration indicating at least one resolution granularity parameter associated with a timing error margin of at least two PRS resources, wherein the at least one resolution granularity parameter is a negative integer power k associated with a time when the timing error margin is Tc*2^k in the DL transmission, or wherein the at least one resolution granularity parameter is an integer power k of 1 or 2 and is associated with a time when the timing error margin is Tc*2^k in frequency range 1 (FR1) DL transmission; and at least one of the following: based on the aggregation configuration, receiving at least one pilot signal from a network entity via the at least two PRS resources, wherein the at least two PRS resources are aggregated based on the timing error margin; or processing a first PRS resource and a second PRS resource of the at least two PRS resources according to the at least one resolution granularity parameter associated with the timing error margin.

[0200] Aspect 30 is an apparatus for wireless communication, comprising means for implementing aspect 29.

[0201] Aspect 31 is a computer-readable medium (eg, non-transitory computer-readable medium) storing computer-executable code that, when executed by at least one processor, causes the at least one processor to implement aspect 29 .

[0202] Aspect 32 is an apparatus for wireless communication at a network node, comprising: a memory; and at least one processor coupled to the memory and configured to implement aspect 29 based at least in part on information stored in the memory.

[0203] Aspect 33 is the apparatus of aspect 32, further comprising: at least one of a transceiver or an antenna coupled to the at least one processor.

[0204] Aspect 34 is a method of wireless communication at a user equipment (UE), the method comprising: sending measurement information associated with at least one of a reference signal time difference measurement or a UE receive-transmit (RxTx) time difference measurement aggregated via at least two positioning frequency layers (PFLs), wherein the at least one of the reference signal time difference measurement or the UE RxTx time difference measurement is associated with the at least two PRS resources, and wherein corresponding additional path information is aggregated via the at least two PFLs.

[0205] Aspect 35 is a method according to aspect 34, wherein the corresponding additional path information includes at least one of a line-of-sight (LOS) flag or a non-line-of-sight (NLOS) flag, wherein the at least one of the LOS flag or the NLOS flag is assigned to a first PFL of the at least two PFLs, or is associated with a second PFL of the at least two PFLs if the at least one of the LOS flag or the NLOS flag is not assigned to the second PFL.

[0206] Aspect 36 is an apparatus for wireless communication, the apparatus comprising means for implementing any one of aspects 34 and 35.

[0207] Aspect 37 is a computer-readable medium (eg, non-transitory computer-readable medium) storing computer-executable code that, when executed by at least one processor, causes the at least one processor to implement any one of aspects 34 and 35 .

[0208] Aspect 38 is an apparatus for wireless communication at a network node. The apparatus includes a memory; and at least one processor coupled to the memory and configured to implement any one of aspects 34 and 35 based at least in part on information stored in the memory.

[0209] Aspect 39 is the apparatus of aspect 38, further comprising: at least one of a transceiver or an antenna coupled to the at least one processor.

Claims

1. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: Memory; and at least one processor coupled to the memory and, based at least in part on information stored in the memory, configured to: receiving, from a network node, an aggregation configuration indicating at least two sounding reference signal (SRS) resources to be aggregated in an uplink (UL) transmission; and Based on the aggregation configuration, at least one pilot signal is sent via the at least two SRS resources, wherein the at least two SRS resources are aggregated with a coherence property in the same set of orthogonal frequency division multiplexing (OFDM) symbols, wherein the at least two SRS resources are associated with at least one of the following: the same path loss parameter, the same transmit power spectral density, the same spatial relation reference signal, the same comb tooth size, or at least one same time domain characteristic.

2. The apparatus of claim 1 , wherein the same path loss parameter is associated with a cross-component carrier (CC) path loss reference indication, and wherein to transmit the at least two SRS resources, the at least one processor is configured to transmit the at least two SRS resources with the cross-CC path loss reference indication; wherein the same path loss parameter is associated with the CC having the lowest CC index; or The same path loss parameter is associated with a CC serving as a primary cell (Pcell) of the UE.

3. The apparatus of claim 1 , wherein the at least one processor is further configured to: sending at least one additional pilot signal via additional instances of the at least two SRS resources; obtaining a coherence indication indicating that the additional instances of the at least two SRS resources have a loss of coherence or a maintenance of coherence; and A coherence status indication is sent, the coherence status indication including information associated with the loss of coherence or the maintenance of coherence for the additional instances of the at least two SRS resources.

4. The apparatus of claim 3, wherein to send the coherence status indication, the at least one processor is configured to: send the coherence status indication in association with uplink time difference of arrival (U-TDOA), and send the coherence status indication in an information element (IE) for UE positioning assistance information via radio resource control (RRC) signaling for the network node; or The UE is associated with multiple round trip time (M-RTT) positioning, and wherein to send the coherence status indication, the at least one processor is configured to: send the coherence status indication in new radio (NR) M-RTT signal measurement information via long term evolution (LTE) positioning protocol (LPP) signaling to a location management function (LMF).

5. The apparatus of claim 4 , wherein to send the coherence status indication, the at least one processor is configured to send at least one of: the coherence status indication being at least one of transmitted independently or transmitted periodically; the coherence status indication comprising a transmission timestamp associated with the loss of coherence or the maintenance of coherence of the at least two SRS resources; or The coherence status indication includes error margin information associated with at least one first transmit timing error margin between the at least two SRS resources.

6. The apparatus of claim 5 , wherein the at least one first transmit timing error margin between the at least two SRS resources is equivalent to or is a subset of at least one second transmit timing error margin associated with a transmit timing error group (TxTEG) identifier assigned to a first SRS resource of the at least two SRS resources, wherein the at least one first transmit timing error margin comprises a tc0 enumeration.

7. The apparatus of claim 1 , wherein the at least one processor is further configured to: A transmit timing error group (TxTEG) identifier assigned to a first SRS resource of the at least two SRS resources is transmitted, wherein a second SRS resource of the at least two SRS resources is associated with the TxTEG identifier if the TxTEG identifier is not assigned to the second SRS resource.

8. The apparatus of claim 7 , wherein, to transmit the TxTEG identifier, the at least one processor is configured to: transmit at least one transmit timing error margin assigned to the first SRS resource of the at least two SRS resources, wherein the second SRS resource is associated with the at least one transmit timing error margin if the at least one transmit timing error margin is not assigned to the second SRS resource of the at least two SRS resources, wherein the at least two SRS resources have a transmit timing mismatch therebetween.

9. The apparatus of claim 7 , wherein, to transmit the TxTEG identifier, the at least one processor is configured to: transmit a transmit timing error margin assigned to the first SRS resource and the second SRS resource of the at least two SRS resources, wherein the first SRS resource is aggregated with the second SRS resource, and wherein the first SRS resource and the second SRS resource have the same transmit timing error.

10. The apparatus of claim 9 , wherein, to transmit the at least one pilot signal via the at least two SRS resources based on the aggregation configuration, the at least one processor is configured to: transmit at least one additional pilot signal via at least one additional SRS resource based on the aggregation configuration, wherein the at least one additional SRS resource is assigned an additional TxTEG identifier different from the TxTEG identifier, and wherein the at least one additional SRS resource is assigned an additional transmit timing error margin that is greater than the transmit timing error margin. 11 . The apparatus of claim 10 , wherein the first SRS resource and the second SRS resource are assigned a phase error group (PEG) identifier that is different from an additional PEG identifier assigned to the at least one additional SRS resource.

12. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: Memory; and at least one processor coupled to the memory and, based at least in part on information stored in the memory, configured to: receiving, from a network node, an aggregation configuration indicating at least two positioning reference signal (PRS) resources to be aggregated in a downlink (DL) transmission; and At least one pilot signal is received from a network entity via the at least two PRS resources based on the aggregation configuration, wherein the at least two PRS resources are aggregated with a coherence property, wherein based on assistance information indicating that a first PRS resource of the at least two PRS resources is assigned to a transmit timing error group (TxTEG) identifier, a second PRS resource of the at least two PRS resources is associated with the TxTEG identifier without assigning the TxTEG identifier to the TxTEG identifier.

13. The apparatus of claim 12, wherein the at least one processor is further configured to: In a case where the TxTEG identifier is not assigned to the second PRS resource of the at least two PRS resources, the first PRS resource and the second PRS resource are processed according to the TxTEG identifier.

14. The apparatus of claim 12 , wherein the first of the at least two PRS resources is assigned a timing error margin based on the assistance information, wherein the second of the at least two PRS resources is associated with the timing error margin if the timing error margin is not assigned to the second PRS resource, wherein the at least two PRS resources have a transmit timing mismatch therebetween.

15. The apparatus of claim 12, wherein the first PRS resource and the second PRS resource of the at least two PRS resources are assigned a timing error margin, wherein the first PRS resource is aggregated with the second PRS resource, and wherein the first PRS resource and the second PRS resource have the same transmit timing error.

16. The apparatus of claim 15 , wherein, to receive the at least one pilot signal from the network entity via the at least two PRS resources based on the aggregation configuration, the at least one processor is configured to: receive at least one additional pilot signal from the network entity via at least one additional PRS resource based on the aggregation configuration, wherein the at least one additional PRS resource is assigned an additional TxTEG identifier different from the TxTEG identifier, and wherein the at least one additional PRS resource is assigned an additional timing error margin that is greater than the timing error margin.

17. The apparatus of claim 16, wherein the first and second PRS resources are assigned a phase error group (PEG) identifier that is different from an additional PEG identifier assigned to the at least one additional PRS resource.

18. The apparatus of claim 12, wherein the aggregation configuration further indicates at least one resolution granularity parameter associated with a timing error margin of the at least two PRS resources; wherein said at least one resolution granularity parameter is a negative integer power k associated with a time of said timing error margin of Tc*2^k in said DL transmission; or Wherein said at least one resolution granularity parameter is an integer power k of 1 or 2 and is associated with a time of said timing error margin of Tc*2^k in frequency range 1 (FR1) DL transmission.

19. The apparatus of claim 12, wherein the at least one processor is further configured to: Transmitting measurement information associated with at least one of a reference signal time difference measurement or a UE receive-transmit (RxTx) time difference measurement aggregated via at least two positioning frequency layers (PFLs), wherein the at least one of the reference signal time difference measurement or the UE RxTx time difference measurement is associated with the at least two PRS resources, and wherein corresponding additional path information is aggregated via the at least two PFLs.

20. The apparatus of claim 19, wherein the corresponding additional path information comprises at least one of a line-of-sight (LOS) flag or a non-line-of-sight (NLOS) flag, wherein the at least one of the LOS flag or the NLOS flag is assigned to a first PFL of the at least two PFLs or is associated with a second PFL of the at least two PFLs if the at least one of the LOS flag or the NLOS flag is not assigned to the second PFL.

21. A method of wireless communication at a user equipment (UE), the method comprising: receiving, from a network node, an aggregation configuration indicating at least two sounding reference signal (SRS) resources to be aggregated in an uplink (UL) transmission; as well as Based on the aggregation configuration, at least one pilot signal is sent via the at least two SRS resources, wherein the at least two SRS resources are aggregated with a coherence property in the same set of orthogonal frequency division multiplexing (OFDM) symbols, wherein the at least two SRS resources are associated with at least one of the following: the same path loss parameter, the same transmit power spectral density, the same spatial relation reference signal, the same comb tooth size, or at least one same time domain characteristic.

22. The method of claim 21, wherein the same path loss parameter is associated with a cross-component carrier (CC) path loss reference indication, and wherein transmitting the at least two SRS resources comprises transmitting the at least two SRS resources with the cross-CC path loss reference indication; wherein the same path loss parameter is associated with the CC having the lowest CC index; or The same path loss parameter is associated with a CC serving as a primary cell (Pcell) of the UE.

23. The method according to claim 21, further comprising: sending additional instances of the at least two SRS resources; obtaining a coherence indication indicating that the additional instances of the at least two SRS resources have a loss of coherence or a maintenance of coherence; as well as A coherence status indication is sent, the coherence status indication including information associated with the loss of coherence or the maintenance of coherence for the additional instances of the at least two SRS resources.

24. The method of claim 23, wherein sending the coherence status indication is associated with uplink time difference of arrival (U-TDOA) and comprises sending the coherence status indication in an information element (IE) for UE positioning assistance information via radio resource control (RRC) signaling for the network node; or The UE is associated with multiple round trip time (M-RTT) positioning, wherein sending the coherence status indication comprises sending the coherence status indication in new radio (NR) M-RTT signal measurement information via long term evolution (LTE) positioning protocol (LPP) signaling to a location management function (LMF).

25. The method of claim 24, wherein sending the coherence status indication comprises at least one of: transmitting the coherence status indication as at least one of a standalone transmission or a periodic transmission; transmitting the coherence status indication including a transmission timestamp associated with the coherence loss or the coherence maintenance of the at least two SRS resources; or The coherence status indication including error margin information associated with at least one first transmission timing error margin between the at least two SRS resources is transmitted.

26. A method of wireless communication at a user equipment (UE), the method comprising: receiving, from a network node, an aggregation configuration indicating at least two positioning reference signal (PRS) resources to be aggregated in a downlink (DL) transmission; as well as At least one pilot signal is received from a network entity via the at least two PRS resources based on the aggregation configuration, wherein the at least two PRS resources are aggregated with a coherence property, wherein based on assistance information indicating that a first PRS resource of the at least two PRS resources is assigned to a transmit timing error group (TxTEG) identifier, a second PRS resource of the at least two PRS resources is associated with the TxTEG identifier without assigning the TxTEG identifier to the TxTEG identifier.

27. The method according to claim 26, further comprising: In a case where the TxTEG identifier is not assigned to the second PRS resource of the at least two PRS resources, the first PRS resource and the second PRS resource are processed according to the TxTEG identifier.

28. The method of claim 26 , wherein the first of the at least two PRS resources is assigned a timing error margin based on the assistance information, wherein the second of the at least two PRS resources is associated with the timing error margin if the timing error margin is not assigned to the second PRS resource, wherein the at least two PRS resources have a transmit timing mismatch therebetween.

29. The method of claim 26, wherein the first PRS resource and the second PRS resource of the at least two PRS resources are assigned a timing error margin, wherein the first PRS resource is aggregated with the second PRS resource, and wherein the first PRS resource and the second PRS resource have the same transmit timing error.

30. The method of claim 29, wherein receiving the at least one pilot signal from the network entity via the at least two PRS resources based on the aggregation configuration comprises receiving at least one additional pilot signal from the network entity via at least one additional PRS resource based on the aggregation configuration, wherein the at least one additional PRS resource is assigned an additional TxTEG identifier different from the TxTEG identifier, and wherein the at least one additional PRS resource is assigned an additional timing error margin that is greater than the timing error margin.

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