Channel auto-correlation in radio coverage maps
By integrating channel auto-correlation information into radio coverage maps, the method improves communication quality and data rates for high Doppler scenarios in wireless communication systems.
Patent Information
- Application Number
- PCT/CN2023/140611
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-12-21
- Publication Date
- 2025-06-26
AI Technical Summary
Current wireless communication systems, such as 5G NR, lack enhancements from channel auto-correlation information in radio coverage maps, which limits communication quality and data rates, especially for high Doppler scenarios.
The method involves collecting channel auto-correlation information from network nodes and user equipment (UEs) using measurement pilots, generating channel auto-correlation maps, and integrating this information into radio coverage maps to improve communication quality.
This approach enhances communication quality by increasing data rates for high Doppler UEs, up to 10 times higher in multi-user MIMO vehicular communications, and supports applications like video streaming.
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Figure CN2023140611_26062025_PF_FP_ABST
Abstract
Description
CHANNEL AUTO-CORRELATION IN RADIO COVERAGE MAPSTECHNICAL FIELD
[0001] The present disclosure relates generally to communication systems, and more particularly, to wireless communications utilizing coverage maps.
[0002] INTRODUCTION
[0003] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may 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) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.
[0004] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate on a municipal, national, regional, and even global level. An example telecommunication standard is 5G New Radio (NR) . 5G NR is part of a continuous mobile broadband evolution promulgated by Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with 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) . Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. There exists a need for further improvements in 5G NR technology. These improvements may also be applicable to other multi-access technologies and the telecommunication standards that employ these technologies.
[0005] BRIEF SUMMARY
[0006] The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects. This summary neither identifies key or critical elements of all aspects nor delineates 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 is presented later.
[0007] In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may comprise a user equipment (UE) , and the method may be performed at / by a UE. The apparatus is configured to provide, to a network node, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE based on a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission. The apparatus is also configured to communicate with the network node based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE.
[0008] In the aspect, the method includes providing, to a network node, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE based on a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission. The method also includes communicating with the network node based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE.
[0009] In another aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus is configured to configure a UE with a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission. The apparatus is also configured to receive, from the UE and based on the configuration, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE. The apparatus is also configured to communicate with the UE based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE.
[0010] In the aspect, the method includes configuring a UE with a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission. The method also includes receiving, from the UE and based on the configuration, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE. The method also includes communicating with the UE based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE.
[0011] To the accomplishment of the foregoing and related ends, the one or more aspects may include the features hereinafter fully described and particularly pointed out in the claims. The following description and the drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed.BRIEF DESCRIPTION OF THE DRAWINGS
[0012] FIG. 1 is a diagram illustrating an example of a wireless communications system and an access network.
[0013] FIG. 2A is a diagram illustrating an example of a first frame, in accordance with various aspects of the present disclosure.
[0014] FIG. 2B is a diagram illustrating an example of downlink (DL) channels within a subframe, in accordance with various aspects of the present disclosure.
[0015] FIG. 2C is a diagram illustrating an example of a second frame, in accordance with various aspects of the present disclosure.
[0016] FIG. 2D is a diagram illustrating an example of uplink (UL) channels within a subframe, in accordance with various aspects of the present disclosure.
[0017] FIG. 3 is a diagram illustrating an example of a base station and user equipment (UE) in an access network.
[0018] FIG. 4 is a diagram illustrating examples of communication networks that utilize radio coverage maps or channel auto-correlation.
[0019] FIG. 5 is a call flow diagram for wireless communications, in accordance with various aspects of the present disclosure.
[0020] FIG. 6 is a diagram illustrating examples of channel auto-correlation measurement pilot periodicity for channel auto-correlation in radio coverage maps, in accordance with various aspects of the present disclosure.
[0021] FIG. 7 is a diagram illustrating examples of location information for channel auto-correlation in radio coverage maps, in accordance with various aspects of the present disclosure.
[0022] FIG. 8 is a diagram illustrating examples of configurations for channel auto-correlation in radio coverage maps, in accordance with various aspects of the present disclosure.
[0023] FIG. 9 is a flowchart of a method of wireless communication, in accordance with various aspects of the present disclosure.
[0024] FIG. 10 is a flowchart of a method of wireless communication, in accordance with various aspects of the present disclosure.
[0025] FIG. 11 is a flowchart of a method of wireless communication, in accordance with various aspects of the present disclosure.
[0026] FIG. 12 is a flowchart of a method of wireless communication, in accordance with various aspects of the present disclosure.
[0027] FIG. 13 is a diagram illustrating an example of a hardware implementation for an example apparatus and / or network entity.
[0028] FIG. 14 is a diagram illustrating an example of a hardware implementation for an example network entity.
[0029] FIG. 15 is a diagram illustrating an example of a hardware implementation for an example network entity.DETAILED DESCRIPTION
[0030] Wireless communication networks may be designed to support communications between network nodes (e.g., base stations, gNBs, etc. ) and UEs. For instance, a network node and a UE in a wireless communication network may communicate in various configurations utilizing coverage maps. Coverage maps may enable various applications, such as UE positioning, route selection, remote driving, emergency vehicles services / management, etc. The communication quality statistics of coverage maps may include uplink and downlink rates per user (which may be computed, e.g., by the packet transport block size (TBS) and the packet decoding error rate) , packet latency, a received signal strength indicator (RSSI) for each Tx-Rx antenna pair, and / or the like.
[0031] Channel auto-correlation may also be a factor that has impacts in wireless communications, such as channel prediction and mobile communications. Channel auto-correlation information may depend on the environment, and thus, may be related to a location, e.g., of a UE. Additionally, for vehicular communication, adaptive-rate transmission may be based on channel auto-correlation, such as for multiple-input and multiple-output (MIMO) scenarios. If channel auto-correlation is known, using adaptive rate transmission may achieve data rates for multi-user MIMO (MU-MIMO) vehicular communications up to 10 times higher than without adaptive rate transmission, and such high data rates may be used for relevant applications, e.g., video streaming, etc. However, while channel auto-correlation information may allow adaptive-rate transmissions to enhance the performance of vehicular communication in high Doppler MIMO scenarios, radio coverage maps lack enhancements from channel auto-correlation information.
[0032] Various aspects relate generally to wireless communications utilizing coverage maps. Some aspects more specifically relate to channel auto-correlation in radio coverage maps. In one example, channel measurements to collect auto-correlation information may be performed by network nodes (e.g., base stations, gNBs, etc. ) and / or UEs / vehicles, based on measurement pilots, for generation of channel auto-correlation maps to be utilized in communications therebetween. In further examples, crowdsourced channel auto-correlation information may be obtained by a network node from multiple UEs / vehicles. In some examples, a channel auto-correlation information / values from a channel auto-correlation map may be requested by a UE / vehicle, and a network node may provide / transmit a corresponding response message. In examples, for UE / vehicle communications, the collection of auto-correlation information in areas outside the boundary (ies) of the roadway may be excluded. In examples, a channel auto-correlation map (s) may be stored locally near the network node or globally on a server at a different geographic location.
[0033] Particular aspects of the subject matter described in this disclosure can be implemented to realize one or more of the following potential advantages. In some examples, by collecting channel auto-correlation information and adding such information to radio coverage maps, the described techniques can be used to generate channel auto-correlation coverage maps that improve communications with high Doppler UEs, e.g., increased data rates.
[0034] The detailed description set forth below in connection with the drawings describes various configurations and does not represent the only configurations in which the concepts described herein may be practiced. The detailed description includes specific details for the purpose of providing a thorough understanding of various concepts. However, these concepts may be practiced without these specific details. In some instances, well known structures and components are shown in block diagram form in order to avoid obscuring such concepts.
[0035] Several aspects of telecommunication 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 may be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.
[0036] By way of example, an element, or any portion of an element, or any combination of elements may be implemented as a “processing system” that includes one or more processors. When multiple processors are implemented, the multiple processors may perform the functions individually or in combination. 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 (SoC) , baseband processors, field programmable gate arrays (FPGAs) , programmable logic devices (PLDs) , state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionality described throughout this disclosure. One or more processors in the processing system may execute software. Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, or any combination thereof.
[0037] Accordingly, in one or more example aspects, implementations, and / or use cases, the functions described may be implemented in hardware, software, or any combination thereof. If implemented in software, the functions may be stored on or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media. Storage media may be any available media that can be accessed by a computer. By way of example, such computer-readable media can include a random-access memory (RAM) , a read-only memory (ROM) , an electrically erasable programmable ROM (EEPROM) , optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of the 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.
[0038] While aspects, implementations, and / or use cases are described in this application by illustration to some examples, additional or different aspects, implementations and / or use cases may come about in many different arrangements and scenarios. Aspects, implementations, and / or use cases described herein may be implemented across many differing platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, aspects, implementations, and / or use cases may come about via integrated chip implementations and other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchasing devices, medical devices, artificial intelligence (AI) -enabled devices, etc. ) . While some examples may or may not be specifically directed to use cases or applications, a wide assortment of applicability of described examples may occur. Aspects, implementations, and / or use cases may range a spectrum from chip-level or modular components to non-modular, non-chip-level implementations and further to aggregate, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more techniques herein. In some practical settings, devices incorporating described aspects and features may also include additional components and features for implementation and practice of claimed and described aspect. For example, transmission and reception of wireless signals necessarily includes a number of components for analog and digital purposes (e.g., hardware components including antenna, RF-chains, power amplifiers, modulators, buffer, processor (s) , interleaver, adders / summers, etc. ) . Techniques described herein may be practiced in a wide variety of devices, chip-level components, systems, distributed arrangements, aggregated or disaggregated components, end-user devices, etc. of varying sizes, shapes, and constitution.
[0039] Deployment of communication systems, such as 5G NR systems, may be arranged in multiple manners with various components or constituent parts. In a 5G NR system, or network, a network node, a network entity, a mobility element of a network, a radio access network (RAN) node, a core network node, a network element, or a network equipment, such as a base station (BS) , or one or more units (or one or more components) performing base station functionality, may be implemented in an aggregated or disaggregated architecture. For example, a BS (such as a Node B (NB) , evolved NB (eNB) , NR BS, 5G NB, access point (AP) , a transmission reception point (TRP) , or a cell, etc. ) may be implemented as an aggregated base station (also known as a standalone BS or a monolithic BS) or a disaggregated base station.
[0040] An aggregated 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 among 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 throughout one or multiple other RAN nodes. The DUs may be implemented to communicate with one or more RUs. Each of the CU, DU and RU can be implemented as virtual units, i.e., a virtual central unit (VCU) , a virtual distributed unit (VDU) , or a virtual radio unit (VRU) .
[0041] Base station operation or network design may consider aggregation characteristics of base station functionality. For example, disaggregated base stations may be utilized in an integrated access backhaul (IAB) network, an open radio access network (O-RAN (such as the network configuration sponsored by the O-RAN Alliance) ) , or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN) ) . Disaggregation may include distributing functionality across two or more units at various physical locations, as well as distributing functionality for at least one unit virtually, which can enable flexibility in network design. The various units of the disaggregated base station, or disaggregated RAN architecture, can be configured for wired or wireless communication with at least one other unit.
[0042] FIG. 1 is a diagram 100 illustrating an example of a wireless communications system and an access network. The illustrated wireless communications system includes a disaggregated base station architecture. The disaggregated base station architecture may include one or more CUs 110 that can 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, or a Non-Real Time (Non-RT) RIC 115 associated with a Service Management and Orchestration (SMO) Framework 105, or both) . A CU 110 may communicate with one or more DUs 130 via respective midhaul links, such as an F1 interface. The DUs 130 may communicate with one or more RUs 140 via respective fronthaul links. The RUs 140 may communicate with respective UEs 104 via one or more radio frequency (RF) access links. In some implementations, the UE 104 may be simultaneously served by multiple RUs 140.
[0043] Each of the units, i.e., the CUs 110, the DUs 130, the RUs 140, as well as the Near-RT RICs 125, the Non-RT RICs 115, and the SMO Framework 105, may include one or more interfaces or be coupled to one or more interfaces configured to receive or to transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium. Each of the units, or an associated processor or controller providing instructions to the communication interfaces of the units, can be configured to communicate with one or more of the other units via the transmission medium. For example, the units can include a wired interface configured to receive or to transmit signals over a wired transmission medium to one or more of the other units. Additionally, the units can include a wireless interface, which may include a receiver, a transmitter, or a transceiver (such as an RF transceiver) , configured to receive or to transmit signals, or both, over a wireless transmission medium to one or more of the other units.
[0044] In some aspects, the CU 110 may host one or more higher layer control functions. Such control functions can include radio resource control (RRC) , packet data convergence protocol (PDCP) , service data adaptation protocol (SDAP) , or the like. Each control function can be implemented with 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 can be logically split into one or more CU-UP units and one or more CU-CP units. The CU-UP unit can communicate bidirectionally with the CU-CP unit via an interface, such as an E1 interface when implemented in an O-RAN configuration. The CU 110 can be implemented to communicate with the DU 130, as necessary, for network control and signaling.
[0045] The DU 130 may correspond to a logical unit that includes one or more base station functions to control 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 high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation, demodulation, or the like) depending, at least in part, on a functional split, such as those defined by 3GPP. In some aspects, the DU 130 may further host one or more low PHY layers. Each layer (or module) can be implemented with an interface configured to communicate signals with other layers (and modules) hosted by the DU 130, or with the control functions hosted by the CU 110.
[0046] Lower-layer functionality can be implemented by one or more RUs 140. In some deployments, an RU 140, controlled by a DU 130, may correspond to a logical node that hosts RF processing functions, or low-PHY layer functions (such as performing fast Fourier transform (FFT) , inverse FFT (iFFT) , digital beamforming, physical random access channel (PRACH) extraction and filtering, or the like) , or both, based at least in part on the functional split, such as a lower layer functional split. In such an architecture, the RU (s) 140 can be implemented to handle over the air (OTA) communication with one or more UEs 104. In some implementations, real-time and non-real-time aspects of control and user plane communication with the RU (s) 140 can be controlled by the corresponding DU 130. In some scenarios, this configuration can enable the DU (s) 130 and the CU 110 to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.
[0047] The SMO Framework 105 may be configured to support RAN deployment and provisioning of non-virtualized and virtualized network elements. For non-virtualized network elements, the SMO Framework 105 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements that may be managed via an operations and maintenance interface (such as an O1 interface) . For virtualized network elements, the SMO Framework 105 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 190) to perform network element life cycle management (such as to instantiate virtualized network elements) via a cloud computing platform interface (such as an O2 interface) . Such virtualized network elements can include, but are not limited to, CUs 110, DUs 130, RUs 140 and Near-RT RICs 125. In some implementations, the SMO Framework 105 can communicate with a hardware aspect of a 4G RAN, such as an open eNB (O-eNB) 111, via an O1 interface. Additionally, in some implementations, the SMO Framework 105 can communicate directly with one or more RUs 140 via an O1 interface. The SMO Framework 105 also may include a Non-RT RIC 115 configured to support functionality of the SMO Framework 105.
[0048] The Non-RT RIC 115 may be configured to include a logical function 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 updates, or policy-based guidance of applications / features in the Near-RT RIC 125. The Non-RT RIC 115 may be coupled to or communicate with (such as via an A1 interface) the Near-RT RIC 125. The Near-RT RIC 125 may be configured to include a logical function that enables near-real-time control and optimization of RAN elements and resources via data collection and actions over an interface (such as via an E2 interface) connecting one or more CUs 110, one or more DUs 130, or both, as well as an O-eNB, with the Near-RT RIC 125.
[0049] 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 external servers. Such information may be utilized by the Near-RT RIC 125 and may be received at the SMO Framework 105 or the Non-RT RIC 115 from non-network data sources or from network functions. 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 for performance and employ AI / ML models to perform corrective actions through the SMO Framework 105 (such as reconfiguration via O1) or via creation of RAN management policies (such as A1 policies) .
[0050] At least one of the CU 110, the DU 130, and the RU 140 may be referred to as a base station 102. Accordingly, a base station 102 may include one or more of the CU 110, the DU 130, and the RU 140 (each component indicated with dotted lines to signify that each component may or may not be included in the base station 102) . The base station 102 provides an access point to the core network 120 for a UE 104. The base station 102 may include macrocells (high power cellular base station) and / or small cells (low power cellular base station) . The small cells include femtocells, picocells, and microcells. A network that includes both small cell and macrocells may be known as a heterogeneous network. A heterogeneous network may also include Home Evolved Node Bs (eNBs) (HeNBs) , which may provide service to a restricted group known as a closed subscriber group (CSG) . The communication links between the RUs 140 and the UEs 104 may include uplink (UL) (also referred to as reverse link) transmissions from a UE 104 to an RU 140 and / or downlink (DL) (also referred to as forward link) transmissions from an RU 140 to a UE 104. The communication links may use multiple-input and multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. The communication links may be through one or more carriers. The base station 102 / UEs 104 may use spectrum up to Y MHz (e.g., 5, 10, 15, 20, 100, 400, etc. MHz) bandwidth per carrier allocated in a carrier aggregation of up to a total of Yx MHz (x component carriers) used for transmission in each direction. The carriers may or may not be adjacent to each other. Allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL than for UL) . The component carriers may include a primary component carrier and one or more secondary component carriers. A primary component carrier may be referred to as a primary cell (PCell) and a secondary component carrier may be referred to as a secondary cell (SCell) .
[0051] Certain UEs 104 may communicate with each other using device-to-device (D2D) communication link 158. The D2D communication link 158 may use the DL / UL wireless wide area network (WWAN) spectrum. The D2D communication link 158 may use 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 through a variety of wireless D2D communications systems, such as for example, BluetoothTM (Bluetooth is a trademark of the Bluetooth Special Interest Group (SIG) ) , Wi-FiTM (Wi-Fi is a trademark of the Wi-Fi Alliance) based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.
[0052] The wireless communications system may further include a Wi-Fi AP 150 in communication with UEs 104 (also referred to as Wi-Fi stations (STAs) ) via communication link 154, e.g., in a 5 GHz unlicensed frequency spectrum or the like. When communicating in an unlicensed frequency spectrum, the UEs 104 / AP 150 may perform a clear channel assessment (CCA) prior to communicating in order to determine whether the channel is available.
[0053] The electromagnetic spectrum is often subdivided, based on frequency / wavelength, into various classes, bands, channels, etc. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz –7.125 GHz) and FR2 (24.25 GHz –52.6 GHz) . Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a “sub-6 GHz” band in various documents and articles. A similar nomenclature issue sometimes occurs with regard to FR2, which is often referred to (interchangeably) as a “millimeter wave” band in documents and articles, despite being different from the extremely high frequency (EHF) band (30 GHz –300 GHz) which is identified by the International Telecommunications Union (ITU) as a “millimeter wave” band.
[0054] The frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Recent 5G NR studies have identified an operating band for these mid-band frequencies as frequency range designation FR3 (7.125 GHz –24.25 GHz) . Frequency bands falling within FR3 may inherit FR1 characteristics and / or FR2 characteristics, and thus may effectively extend features of FR1 and / or FR2 into mid-band frequencies. In addition, 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.
[0055] With the above aspects in mind, unless specifically stated otherwise, the term “sub-6 GHz” or the like if used herein may broadly represent frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. Further, unless specifically stated otherwise, the term “millimeter wave” or the like if used herein may broadly represent frequencies that may include mid-band frequencies, may be within FR2, FR4, FR2-2, and / or FR5, or may be within the EHF band.
[0056] The base station 102 and the UE 104 may each include a plurality of antennas, such as antenna elements, antenna panels, and / or antenna arrays to facilitate beamforming. The base station 102 may transmit a beamformed signal 182 to the UE 104 in one or more transmit directions. The UE 104 may receive the beamformed signal from the base station 102 in one or more receive directions. The UE 104 may also transmit a beamformed signal 184 to the base station 102 in one or more transmit directions. The base station 102 may receive the beamformed signal from the UE 104 in one or more receive directions. The base station 102 / UE 104 may perform beam training to determine the best receive and transmit directions for each of the base station 102 / UE 104. The transmit and receive directions for the base station 102 may or may not be the same. The transmit and receive directions for the UE 104 may or may not be the same.
[0057] The base station 102 may include and / or be referred to as a gNB, Node B, eNB, an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS) , an extended service set (ESS) , a TRP, network node, network entity, network equipment, or some other suitable terminology. The base station 102 can be implemented as an integrated access and backhaul (IAB) node, a relay node, a sidelink node, an aggregated (monolithic) base station with a baseband unit (BBU) (including a CU and a DU) and an RU, or as a disaggregated base station including one or more of a CU, a DU, and / or an RU. The set of base stations, which may include disaggregated base stations and / or aggregated base stations, may be referred to as next generation (NG) RAN (NG-RAN) .
[0058] 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 the control node that processes the signaling between the UEs 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 identification handling, access authorization, and subscription management. The one or more location servers 168 are illustrated as including a Gateway Mobile Location Center (GMLC) 165 and a Location Management Function (LMF) 166. However, generally, 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, the LMF 166, a position determination entity (PDE) , a serving mobile location center (SMLC) , a mobile positioning center (MPC) , or the like. The GMLC 165 and the LMF 166 support UE location services. The GMLC 165 provides an interface for clients / applications (e.g., emergency services) for accessing UE positioning information. The LMF 166 receives measurements and assistance information from the NG-RAN and the UE 104 via the AMF 161 to compute the position of the UE 104. The NG-RAN may utilize one or more positioning methods in order to determine the position of the UE 104. Positioning the UE 104 may involve signal measurements, a position estimate, and an optional velocity computation based on the measurements. The signal measurements may be made by the UE 104 and / or the base station 102 serving the UE 104. The signals measured 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) , global position system (GPS) , non-terrestrial network (NTN) , or other satellite position / location system) , LTE signals, wireless local area network (WLAN) signals, Bluetooth signals, a terrestrial beacon system (TBS) , sensor-based information (e.g., barometric pressure sensor, 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.
[0059] Examples of UEs 104 include a cellular phone, a smart phone, 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., 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 similar functioning device. Some of the UEs 104 may be referred to as IoT devices (e.g., parking meter, gas pump, toaster, vehicles, heart monitor, etc. ) . The 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 communications 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 collectively access the network and / or individually access the network.
[0060] Referring again to FIG. 1, in certain aspects, the UE 104 may have a component 198 that may be configured to provide, to a network node, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE based on a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission. The component 198 may also be configured to communicate with the network node based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE. The component 198 may be configured to receive, from the network node prior to the provision of the at least one channel auto-correlation measurement pilot, the configuration associated with the periodicity for the at least one channel auto-correlation measurement pilot transmission, where the configuration is indicative of an activation for providing the at least one channel auto-correlation measurement pilot. The component 198 may be configured to receive, from the network node, at least one channel auto-correlation value of the channel auto-correlation map, where the channel auto-correlation map is based on the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE. The component 198 may be configured to receive, from the network node, a broadcast auto-correlation measurement pilot, where a header of the broadcast auto-correlation measurement pilot includes an index indicative of a performance of at least one channel auto-correlation measurement. The component 198 may be configured to perform, based on a measurement configuration, the at least one channel auto-correlation measurement based on the broadcast auto-correlation measurement pilot. The component 198 may be configured to provide, to the network node, the at least one channel auto-correlation measurement and an indication of the location information associated with the UE. The component 198 may be configured to provide, to the network node, a request message indicative of a request by the UE for at least one channel auto-correlation value from the channel auto-correlation map. The component 198 may be configured to receive, from the network node and based on the request message, a request response message indicative of the at least one channel auto-correlation value of the channel auto-correlation map. In certain aspects, the base station 102 may have a component 199 that may be configured to configure a UE with a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission. The component 199 may also be configured to receive, from the UE and based on the configuration, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE. The component 199 may also be configured to communicate with the UE based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE. The component 199 may be configured to generate the channel auto-correlation map based at least on performing, based on the at least one channel auto-correlation measurement pilot, at least one channel auto-correlation measurement using at least one antenna pair. The component 199 may be configured to provide, for the UE, at least one channel auto-correlation value of the channel auto-correlation map, where the channel auto-correlation map is based on the at least one channel auto-correlation measurement. The component 199 may be configured to provide, for the UE, a broadcast auto-correlation measurement pilot, where a header of the broadcast auto-correlation measurement pilot includes an index indicative of a performance of at least one channel auto-correlation measurement. The component 199 may be configured to receive, from the UE, the at least one channel auto-correlation measurement, based on the broadcast auto-correlation measurement pilot, and an indication of the location information associated with the UE. The component 199 may be configured to receive, from the UE, a request message indicative of a request by the UE for at least one channel auto-correlation value of the channel auto-correlation map. The component 199 may be configured to provide, for the UE and based on the request message, a request response message indicative of the at least one channel auto-correlation value. Accordingly, the aspects herein for channel auto-correlation in radio coverage maps enable channel measurements to collect auto-correlation information to be performed by network nodes and / or UEs (e.g., in and / or comprising vehicles or other conveyances) , based on measurement pilots, for generation of channel auto-correlation maps to be utilized in communications therebetween. The described aspects provide for generation of channel auto-correlation coverage maps that improve communications with high Doppler UEs, e.g., increased data rates, by collecting channel auto-correlation information, such as from individual UEs or via crowdsourcing of multiple UEs, and adding such information to radio coverage maps.
[0061] FIG. 2A is a diagram 200 illustrating an example of a first subframe within a 5G NR frame structure. FIG. 2B is a diagram 230 illustrating an example of DL channels within a 5G NR subframe. FIG. 2C is a diagram 250 illustrating an example of a second subframe within a 5G NR frame structure. FIG. 2D is a diagram 280 illustrating an example of UL channels within a 5G NR subframe. The 5G NR frame structure may be frequency division duplexed (FDD) in which for a particular set of subcarriers (carrier system bandwidth) , subframes within the set of subcarriers are dedicated for either DL or UL, or may be time division duplexed (TDD) in which for a particular set of subcarriers (carrier system bandwidth) , subframes within the set of subcarriers are dedicated for both DL and UL. In the examples provided by FIGs. 2A, 2C, the 5G NR frame structure is assumed to be TDD, with subframe 4 being configured with slot format 28 (with mostly DL) , where D is DL, U is UL, and F is flexible for use between DL / UL, and subframe 3 being configured with slot format 1 (with all UL) . While subframes 3, 4 are shown with slot formats 1, 28, respectively, any particular subframe may be configured with any of the various available slot formats 0-61. Slot formats 0, 1 are all DL, UL, respectively. Other slot formats 2-61 include a mix of DL, UL, and flexible symbols. UEs are configured with the slot format (dynamically through DL control information (DCI) , or semi- statically / statically through radio resource control (RRC) signaling) through a received slot format indicator (SFI) . Note that the description infra applies also to a 5G NR frame structure that is TDD.
[0062] FIGs. 2A-2D illustrate a frame structure, and the aspects of the present disclosure may be applicable to other wireless communication technologies, which may have a different frame structure and / or different channels. A frame (10 ms) may be divided into 10 equally sized subframes (1 ms) . Each subframe may include one or more time slots. Subframes 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 normal CP, each slot may include 14 symbols, and for extended CP, each slot may include 12 symbols. The symbols on DL may be CP orthogonal frequency division multiplexing (OFDM) (CP-OFDM) symbols. The symbols on 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 a single stream transmission) . The number of slots within a subframe is based on the CP and the numerology. The numerology defines the subcarrier spacing (SCS) (see Table 1) . The symbol length / duration may scale with 1 / SCS.
[0063] Table 1: Numerology, SCS, and CP
[0064] For normal CP (14 symbols / slot) , different numerologies μ 0 to 4 allow for 1, 2, 4, 8, and 16 slots, respectively, per subframe. For extended CP, the numerology 2 allows for 4 slots per subframe. Accordingly, for normal CP and numerology μ, there are 14 symbols / slot and 2μ slots / subframe. The subcarrier spacing may be equal to 2μ* 15 kHz, where μ is the numerology 0 to 4. As such, the numerology μ=0 has a subcarrier spacing of 15 kHz and the numerology μ=4 has a subcarrier spacing of 240 kHz. The symbol length / duration is inversely related to the subcarrier spacing. FIGs. 2A-2D provide an example of normal CP with 14 symbols per slot and numerology 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 set of frames, there may be one or more different bandwidth parts (BWPs) (see FIG. 2B) that are frequency division multiplexed. Each BWP may have a particular numerology and CP (normal or extended) .
[0065] A resource grid may be used to represent the frame structure. Each time slot includes a resource block (RB) (also referred to as physical RBs (PRBs) ) that extends 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.
[0066] As illustrated in FIG. 2A, some of the REs carry reference (pilot) signals (RS) for the UE.The RS may include demodulation RS (DM-RS) (indicated as R for one particular configuration, but other DM-RS configurations are possible) and channel state information reference signals (CSI-RS) for channel estimation at the UE. The RS may also include beam measurement RS (BRS) , beam refinement RS (BRRS) , and phase tracking RS (PT-RS) .
[0067] FIG. 2B illustrates an example of various DL 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 including six RE groups (REGs) , each REG including 12 consecutive REs in an OFDM symbol of an RB. A PDCCH within one BWP may be referred to as a control resource set (CORESET) . A UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., common search space, UE-specific search space) during PDCCH monitoring occasions on the CORESET, where the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs may be located at greater and / or lower frequencies across the channel bandwidth. A primary synchronization signal (PSS) may be within symbol 2 of particular subframes of a frame. The PSS is used by a UE 104 to determine subframe / symbol timing and a physical layer identity. A secondary synchronization signal (SSS) may be within symbol 4 of particular subframes of a frame. The SSS is used by a UE to determine a 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 a physical cell identifier (PCI) . Based on the PCI, the UE can determine the locations of the DM-RS. The physical broadcast channel (PBCH) , which carries a master information block (MIB) , may be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block (also referred to as SS block (SSB) ) . The MIB provides a number of RBs in the system bandwidth and a system frame number (SFN) . The physical downlink shared channel (PDSCH) carries user data, broadcast system information not transmitted through the PBCH such as system information blocks (SIBs) , and paging messages.
[0068] As illustrated in FIG. 2C, some of the REs carry DM-RS (indicated as R for one particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE may transmit DM-RS for the physical uplink control channel (PUCCH) and DM-RS for the physical uplink shared channel (PUSCH) . The PUSCH DM-RS may be transmitted in the first one or two symbols of the PUSCH. The PUCCH DM-RS may be transmitted in different configurations depending on whether short or long PUCCHs are transmitted and depending on the particular PUCCH format used. The UE may transmit sounding reference signals (SRS) . The SRS may be transmitted in the last symbol of a subframe. The SRS may have a comb structure, and a UE may transmit SRS on one of the combs. The SRS may be used by a base station for channel quality estimation to enable frequency-dependent scheduling on the UL.
[0069] FIG. 2D 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 scheduling requests, a channel quality indicator (CQI) , a precoding matrix indicator (PMI) , a rank indicator (RI) , and hybrid automatic repeat request (HARQ) acknowledgment (ACK) (HARQ-ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACK and / or negative ACK (NACK) ) . The PUSCH carries data, and may additionally be used to carry a buffer status report (BSR) , a power headroom report (PHR) , and / or UCI.
[0070] FIG. 3 is a block diagram of a base station 310 in communication 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 a radio resource control (RRC) layer, and layer 2 includes a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with broadcasting of system information (e.g., MIB, SIBs) , 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 the transfer of upper layer packet data units (PDUs) , error correction through ARQ, concatenation, segmentation, and reassembly of RLC service data units (SDUs) , re-segmentation 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.
[0071] The transmit (TX) processor 316 and the receive (RX) processor 370 implement layer 1 functionality associated with various signal processing functions. Layer 1, which includes a physical (PHY) layer, may include error detection on the transport channels, forward error correction (FEC) coding / decoding of the transport channels, interleaving, rate matching, mapping onto physical channels, modulation / demodulation of physical channels, and MIMO antenna processing. The TX processor 316 handles mapping to signal constellations based on various modulation schemes (e.g., binary phase-shift keying (BPSK) , quadrature phase-shift keying (QPSK) , M-phase-shift keying (M-PSK) , M-quadrature amplitude modulation (M-QAM) ) . The coded and modulated symbols may then be split into parallel streams. Each stream may then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., pilot) in the time and / or frequency domain, and then combined together 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 produce multiple spatial streams. Channel estimates from a channel estimator 374 may be used to determine the coding and modulation scheme, as well as for spatial processing. The channel estimate 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 with a respective spatial stream for transmission.
[0072] At the UE 350, each receiver 354Rx receives a signal through its respective antenna 352. Each receiver 354Rx recovers information modulated onto an RF carrier and provides the information to the 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 may perform 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, and the reference signal, are recovered and demodulated by determining the most likely signal constellation points transmitted by the base station 310. These soft decisions may be based on channel estimates computed by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals that were originally transmitted by the base station 310 on the physical channel. The data and control signals are then provided to the controller / processor 359, which implements layer 3 and layer 2 functionality.
[0073] The controller / processor 359 can be associated with at least one memory 360 that stores program codes and data. The at least one 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, deciphering, 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.
[0074] Similar to the functionality described in connection with the DL transmission by the base station 310, the controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIBs) acquisition, RRC connections, and measurement reporting; PDCP layer functionality associated with header compression / decompression, and security (ciphering, deciphering, integrity protection, integrity verification) ; RLC layer functionality associated with the transfer of upper layer PDUs, error correction through ARQ, concatenation, segmentation, and reassembly of RLC SDUs, re-segmentation 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.
[0075] Channel estimates derived by a channel estimator 358 from 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 antenna 352 via separate transmitters 354Tx. Each transmitter 354Tx may modulate an RF carrier with a respective spatial stream for transmission.
[0076] The UL transmission is processed at the base station 310 in a manner similar to that described in connection with the receiver function at the UE 350. Each receiver 318Rx receives a signal through its respective antenna 320. Each receiver 318Rx recovers information modulated onto an RF carrier and provides the information to a RX processor 370.
[0077] The controller / processor 375 can be associated with at least one memory 376 that stores program codes and data. The at least one 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, deciphering, header decompression, control signal processing to recover IP packets. The controller / processor 375 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.
[0078] At least one of the TX processor 368, the RX processor 356, and the controller / processor 359 may be configured to perform aspects in connection with the component 198 of FIG. 1.
[0079] At least one of the TX processor 316, the RX processor 370, and the controller / processor 375 may be configured to perform aspects in connection with the component 199 of FIG. 1.
[0080] As noted above, a network node and a UE in a wireless communication network may communicate in various configurations utilizing coverage maps, which may enable various applications, such as UE positioning, route selection, remote driving, emergency vehicles services / management, etc. Channel auto-correlation may also impact wireless communications between network nodes and UEs, such as channel prediction and mobile communications, and may depend on the environment and / or be related to a location of a UE. For vehicular communication, adaptive-rate transmission may be based on channel auto-correlation, such as for multiple-input and multiple-output (MIMO) . If channel auto-correlation is known, using adaptive rate transmission may achieve data rates for multi-user MIMO (MU-MIMO) vehicular communications up to 10 times higher than without adaptive rate transmission, and such high data rates may be used for relevant applications, e.g., video streaming, etc.
[0081] FIG. 4 is a diagram 400 illustrating example of communication networks that utilize radio coverage maps or channel auto-correlation. Diagram 400 is described below in two contexts for a UE 402 and a network node (e.g., a base station 404) in communication with each other.
[0082] In one scenario, the UE 402 may be in motion based on a velocity 406, during communications 410 with the base station 404. The UE 402 may be in, or may comprise, a vehicle or other type of conveyance. The communications 410 may include mobile applications (e.g., UE 402 positioning with or without the base station 404) , route selection such as for a trip in a vehicle, remote driving for a vehicle associated with the UE 402, emergency vehicles services / management associated with the UE 402, etc. The base station 404 may obtain, e.g., compute and / or be provided with, a radio coverage map 408 for an area in which the UE 402 is present. Accordingly, the communications 410 may improve communication quality statistics associated with coverage maps may, such as uplink and downlink rates per user (which may be computed, e.g., by the packet TBS and the packet decoding error rate) , packet latency, an RSSI for each Tx-Rx antenna pair, and / or the like.
[0083] In another scenario, the UE 402 may be in motion based on a velocity 406’, during communications 414 with the base station 404. The UE 402 may be in, or may comprise, a vehicle or other type of conveyance, and may experience a high Doppler MIMO scenario (e.g., based at least in part on the velocity 406’) . The communications 414 may include channel predictions and mobile communications, and may depend on the environment and / or be related to a location of the UE 402. For vehicular communication associated with the UE 402, adaptive-rate transmission for the communications 414 may be based on channel auto-correlation associated with channel auto-correlation information 412, e.g., for MIMO scenarios. If channel auto-correlation using the channel auto-correlation information 412 is known, using adaptive rate transmission for the communications 414 may achieve data rates for MU-MIMO vehicular communications up to 10 times higher than without adaptive rate transmission, and such high data rates may be used for relevant applications, e.g., video streaming, etc.
[0084] However, while channel auto-correlation information may allow adaptive-rate transmissions to enhance the performance of vehicular communication in high Doppler MIMO scenarios, radio coverage maps lack enhancements from channel auto-correlation information. Aspects herein provide for methods whereby vehicular UEs are asked to send location-based pilot signals to the network so that the network can create a channel auto-correlation map over the coverage area of the cell. The map, after it has been generated, can then be provided to a UE so that the UE can optimize adaptive rate transmissions. The UE, using such a map, may know its location, but the UE may not have to share its location with the network (e.g., alleviating privacy concerns) . The aspects herein also describe some of the key points for the data acquisition to create the map, including but without limitation: 1) UE configuration of periodic pilot transmissions (e.g., time interval, periodicity in time / space, etc. ) ; and 2) additional UE information to be sent, such as location information, e.g., a “zone” identifier (ID) , a GNSS location, a vehicle model, etc.
[0085] Aspects, are provided herein for channel auto-correlation in radio coverage maps. In one example, channel measurements to collect auto-correlation information may be performed by network nodes (e.g., base stations, gNBs, etc. ) and / or UEs / vehicles, based on measurement pilots, for generation of channel auto-correlation maps to be utilized in communications therebetween. In further examples, crowdsourced channel auto-correlation information may be obtained by a network node from multiple UEs / vehicles. In some examples, a channel auto-correlation information / values from a channel auto-correlation map may be requested by a UE / vehicle, and a network node may provide / transmit a corresponding response message. In examples, for UE / vehicle communications, the collection of auto-correlation information in areas outside the boundary (ies) of the roadway may be excluded. In examples, a channel auto-correlation map (s) may be stored locally near the network node or globally on a server at a different geographic location. Aspects provide for generating channel auto-correlation coverage maps that improve communications with high Doppler UEs, e.g., increased data rates, by collecting channel auto-correlation information and adding such information to radio coverage maps.
[0086] FIG. 5 is a call flow diagram 500 for wireless communications, in various aspects. Call flow diagram 500 illustrates channel auto-correlation in radio coverage maps for a wireless device (a UE 502, by way of example) that communicates with the network node (a base station 504, such as a gNB or other type of base station, by way of example, as shown) , in various aspects. Aspects described for the base station 504 may be performed by the base station in aggregated form and / or by one or more components of the base station in disaggregated form. Additionally, or alternatively, the aspects may be performed by the UE 502 autonomously, in addition to, and / or in lieu of, operations of the base station 504.
[0087] In the illustrated aspect, the UE 502 may be configured to receive, and the base station 504 may be configured to transmit / provide, a configuration 506. The configuration 506 may be received by the UE 502, and transmitted / provided by the base station 504, prior to the provision of a channel auto-correlation measurement pilot (s) from the UE 502 to the base station 504. In aspects, the configuration 506 may be associated with a periodicity for the channel auto-correlation measurement pilot (s) transmission (s) , and the configuration may be indicative of an activation for the UE 502 to provide the channel auto-correlation measurement pilot (s) to the base station 504. The configuration 506 may be indicative of the periodicity for channel auto-correlation measurement pilot (s) transmission (s) being based on a time period length or a period of one or more slots, in aspects, and the channel auto-correlation measurement pilot (s) may comprise at least one demodulation reference signal (DMRS) symbol for the UE 502 or at least one symbol having a length that is longer than a DMRS symbol for the UE 502. In aspects, the configuration 506 may be indicative of the channel auto-correlation measurement pilot (s) including multiple slots, and the channel auto-correlation measurement pilot (s) may include the multiple slots. In aspects, the configuration 506 may be indicative of the periodicity for the channel auto-correlation measurement pilot (s) transmission (s) being based on a distance interval traversed by the UE 502. The distance interval traversed by the UE 502 may be based on a measurement by the UE 502 of the distance interval, and the UE 502 may be configured to provide the channel auto-correlation measurement pilot (s) with a provision of a speed experienced by the UE 502. In aspects, the UE 502 may be configured to receive, and the base station 504 may be configured to transmit / provide, the configuration 506 associated with the periodicity for the channel auto-correlation measurement pilot (s) transmission (s) based on at least one of:(i) a channel auto-correlation map update indication, (ii) an establishment of a connection with the network node (e.g., the base station 504) by the UE 502, or (iii) location information associated with the UE 502 being associated with a selected roadway area of a roadway.
[0088] The UE 502 may be configured to identify (at 508) channel information of a communication channel and location information associated with the UE 502 based on the configuration 506. In aspects, the channel information of a communication channel may be identified (at 508) by performing channel measurements on communication channels between the UE 502 and the base station 504. From such channel measurements, characteristics of the channel may be identified (at 508) as the channel information (e.g., quality statistics, energy, power, SNR / SINR, etc. ) . In aspects, the location information associated with the UE 502 may be identified (at 508) as further being associated with at least one portion of an area of the channel auto-correlation map, and the location information associated with the UE 502 may include a zone identifier, a GNSS location, a segment identifier of a roadway, a lane identifier of the roadway, vehicle information associated with the UE 502 (e.g., make, model, year, etc. ) , or a set of transmission parameters of the UE 502 (e.g., an RF chain) . In aspects, the location information associated with the UE 502 may exclude additional location information that corresponds to at least one area outside of a boundary of the roadway. That is, aspects herein, such as for vehicle communications, may utilize location information associated a UE that includes information within roadway boundaries of the roadway.
[0089] The UE 502 may be configured to transmit / provide, and the base station 504 may be configured to receive, at least one channel auto-correlation measurement pilot (s) 510 (e.g., channel auto-correlation measurement pilot (s) ) by corresponding channel auto-correlation measurement pilot (s) transmission (s) . The at least one channel auto-correlation measurement pilot (s) 510 may be transmitted / provided periodically by the UE 502 and correspondingly received by the base station 504 based on the configuration 506. For instance, as noted above, the at least one channel auto-correlation measurement pilot (s) 510 may be transmitted / provided via a channel auto-correlation measurement pilot (s) transmission (s) with a periodicity of a time period length and / or a number of slots, as multiple slots, with a periodicity associated with a distance traveled by the UE 502 (e.g., a distance interval traversed by the UE 502, and in such configurations, the at least one channel auto-correlation measurement pilot (s) 510 may include or be accompanied by a speed experienced by the UE 502) , and / or the like. In aspects, the at least one channel auto-correlation measurement pilot (s) 510 may be transmitted / provided as a DMRS symbol (s) for the UE 502 or as a symbol (s) having a length that is longer than the DMRS symbol for the UE 502.
[0090] The base station 504 may be configured to generate a channel auto-correlation map based at least on a performance of at least one channel auto-correlation measurement using at least one antenna pair of the base station 504. In aspects, the performance of at least one channel auto-correlation measurement may be based on the at least one channel auto-correlation measurement pilot (s) 510. The UE 502 may be configured to receive, and the base station 504 may be configured to transmit / provide, at least one channel auto-correlation value of the channel auto-correlation map, where the channel auto-correlation map may be based on the at least one channel auto-correlation measurement pilot (s) 510 that indicates the channel information of the communication channel and the location information associated with the UE 502 that was identified (at 508) .
[0091] The UE 502 and the base station 504 may be configured to communicate, e.g., as communications 512, based on the channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot (s) 510 that indicates the channel information of the communication channel and the location information associated with the UE 502. The communications 512 between the UE 502 and the base station 504 may be based on the channel auto-correlation map being associated with the at least one channel auto-correlation measurement pilot (s) 510. In aspects, the communications 512 between the UE 502 and the base station 504 may be based on a value (s) of / from the channel auto-correlation map that are transmitted / provided by the base station 504 and received by the UE 502. In aspects, the communications 512 between the UE 502 and the base station 504 may be based on the channel auto-correlation map and further based on adaptive rate transmissions.
[0092] Accordingly, aspects herein for channel auto-correlation in radio coverage maps enable the generation of channel auto-correlation coverage maps that improve communications with high Doppler UEs, e.g., increased data rates, by collecting channel auto-correlation information and adding such information to radio coverage maps. Aspects include performance of channel measurements to collect auto-correlation information, crowdsourced channel auto-correlation information, channel auto-correlation requests by the vehicle / UE and response messages from the network, and / or the like, as further described herein. privacy
[0093] FIG. 6 is a diagram 600 illustrating examples of channel auto-correlation measurement pilot periodicity for channel auto-correlation in radio coverage maps, in various aspects. Diagram 600 shows example configurations for such aspects as a configuration 650, a configuration 660, a configuration 670, and a configuration 680. In aspects, the periodicity may be based on one or more of the various configurations in diagram 600. In aspects, a network node, e.g., a base station 604, a gNB, etc., and a vehicle / UE (e.g., a “UE 602” that may be in or may comprise a vehicle 603) may be configured to communicate with each other.
[0094] In the example illustrated for the configuration 650, a network node, e.g., a base station 604, a gNB, etc., may be configured to signal a vehicle / UE (e.g., a “UE 602” that may be in or may comprise a vehicle 603) with an instance of a configuration 618 (e.g., may configure the UE 602) to send / transmit / provide channel auto-correlation measurement pilots (via channel auto-correlation measurement pilot (s) transmission (s) 608) periodically to the network node (e.g., the base station 604) , and the configuration 618 may be based on one or more of (i) a channel auto-correlation map update indication 624, (ii) an establishment of a connection 622 with the network node (e.g., the base station 604) by UE 602, and / or (iii) location information (described in further detail herein) associated with the UE 602 being associated with a selected roadway area of a roadway 616. In aspects, the base station 604 may be configured to randomly / pseudo-randomly select the vehicle / UE (e.g., the UE 602 in and / or comprising the vehicle 603) , among the UEs which are connected to the base station 604. In aspects, the configuration 618 may be indicative of the periodicity 620 for the at least one channel auto-correlation measurement pilot (s) transmission (s) 608 being based on a time period length or a period of one or more slots 606. In such aspects, the at least one channel auto-correlation measurement pilot of a given one of the channel auto-correlation measurement pilot (s) transmission (s) 608 may comprise at least one DMRS symbol for the UE 602 or at least one symbol having a length that is longer than a DMRS symbol for the UE 602 to increase measurement precision. In some aspects, the configuration 618 may be preconfigured at the UE 602.
[0095] In the example illustrated for the configuration 660, the periodicity 620 may be as small as one slot, or as small as the time period of one slot, as shown for the channel auto-correlation measurement pilot (s) (via channel auto-correlation measurement pilot (s) transmission (s) 610) .
[0096] In the example illustrated for the configuration 670, the periodicity 620 may be indicated by the configuration 618, which may be based on one or more of (i) the channel auto-correlation map update indication 624, (ii) the establishment of the connection 622 with the network node (e.g., the base station 604) by UE 602, and / or (iii) the location information (described in further detail herein) associated with the UE 602 being associated with the selected roadway area of the roadway 616. In the configuration 670, the configuration 618 may indicate the UE 602 to send / transmit / provide the channel auto-correlation measurement pilot (s) (via channel auto-correlation measurement pilot (s) transmission (s) 612) periodically, as described above, to the network node (e.g., the base station 604) , according to the periodicity 620, where each the channel auto-correlation measurement pilot (s) (via channel auto-correlation measurement pilot (s) transmission (s) 612) includes more than one slot / multiple slots. That is, the configuration 618 may be indicative of the at least one channel auto-correlation measurement pilot (s) via channel auto-correlation measurement pilot (s) transmission (s) 612) including multiple slots, and the at least one channel auto-correlation measurement pilot (s) (via channel auto-correlation measurement pilot (s) transmission (s) 612) may include the multiple slots. Accordingly, having multiple slots for the at least one channel auto-correlation measurement pilot (s) via channel auto-correlation measurement pilot (s) transmission (s) 612) may result in the obtained channel correlation being more precise, and it may also change with the number of slots. In aspects, the number of slots may be preconfigured at the UE 602 by the configuration 618.
[0097] In the example illustrated for the configuration 680, the periodicity 620 may be indicated by the configuration 618, which may indicate the UE 602 to send / transmit / provide the channel auto-correlation measurement pilot (s) (via channel auto-correlation measurement pilot (s) transmission (s) using the connection 622) periodically to the network node (e.g., the base station 604) , according to the periodicity 620. In such a configuration, the periodicity 620 may be based on a distance interval d traversed by the UE 602 (e.g., as in and / or as comprising the vehicle 603) , where the distance interval d traversed by the UE 602 may be based on a measurement by the UE 602 of the distance interval d. The UE 602 may be configured to send / transmit / provide the at least one channel auto-correlation measurement pilot (s) with an instant speed 614 experienced by the UE 602. In aspects, the periodicity 620 that is based on the distance interval d may be every few meters, or some other distance value / length. As vehicles / UEs may be configured to realize computing the distance moved / traversed, a vehicle / UE may thus send / transmit / provide the channel auto-correlation measurement pilot (s) based on the periodicity 620 being the distance interval d. In aspects, the distance interval d may be preconfigured at the UE 602 by the configuration 618.
[0098] FIG. 7 is a diagram 700 illustrating examples of location information for channel auto-correlation in radio coverage maps, in various aspects. Diagram 700 is shown in the context of a UE 702 and a network node (e.g., a base station 704, a gNB, etc. ) .
[0099] In aspects, the UE 702 may be in, or may comprise, a vehicle 722 as shown for a UE 703. The vehicle 722 may be traveling / traversing a roadway 720 at a velocity or a speed 726. In aspects, the location information may be associated with the UE 702. In some aspects, the location information may also be associated with the roadway 720 which the UE 702 traverses. The location information may be location information 716 (associated with the UE 702) that is inside of the roadway boundary of the roadway 720, and in some aspects, the location information may exclude additional location information 718 outside of the roadway boundary of the roadway 720.
[0100] The location information 716 may be further associated with at least one portion of an area of a channel auto-correlation map. In aspects, the location information 716 associated with the UE 702 may include at least one of a zone identifier (ID) 706, a GNSS location 708 associated with a GNSS, a segment identifier 710 of the roadway 720, a lane identifier 712 and / or a lane identifier 714 of the roadway 720, vehicle information 724 associated with the UE 702 and / or the vehicle 722 (e.g., make, model, year, etc. ) , and / or a set of transmission parameters 728 (e.g., an RF chain, etc. ) of the UE 702.
[0101] FIG. 8 is a diagram 800 illustrating examples of configurations for channel auto-correlation in radio coverage maps, in various aspects. Diagram 800 shows various example configurations for such aspects in the context of a UE 802, an additional UE 803, and a network node (e.g., a base station 804, gNB, etc. ) : a configuration 850, a configuration 860, and a configuration 870. The configurations shown in diagram 800 may be further aspects of the call flow diagram 500 in FIG. 5. As noted, aspects may provide for a channel auto-correlation map 818 shown in the configuration 860.
[0102] In the configuration 850, the UE 802 may be configured to transmit / provide, and the base station 804 may be configured to receive, at least one channel auto-correlation pilot (s) 806 (e.g., as similarly described in FIG. 5 (510) ) . The base station 804 may be configured to generate (at 808) a channel auto-correlation map 818 based at least on a performance of at least one channel auto-correlation measurement using at least one antenna pair of the base station 804. In aspects, the performance of at least one channel auto-correlation measurement may be based on the at least one channel auto-correlation measurement pilot (s) 806. In aspects, the channel auto-correlation map 818 may be stored locally near the base station 804 or globally on a server at a different geographic location than the base station 804.
[0103] The UE 802 may be configured to receive, and the base station 804 may be configured to transmit / provide, at least one channel auto-correlation value (s) 810 of the channel auto-correlation map 818 that is generated (at 808) . In aspects, the channel auto-correlation map 818 and / or the at least one channel auto-correlation value (s) 810 may be based on the at least one channel auto-correlation measurement pilot (s) 806 that indicates the channel information of the communication channel and the location information associated with the UE 802 that was identified (e.g., in FIG. 5 (at 508) ) .
[0104] In the configuration 860, the base station 804 may be configured to select multiple UEs, e.g., the UE 802, the additional UE 803, and / or other UEs, for provision of channel auto-correlation measurement pilot (s) thereby. In the configuration 860, the base station 808 may be configured to perform crowdsourcing for reception of at least one channel auto-correlation measurement (s) .
[0105] The base station 804 may be configured to select the multiple UEs, e.g., the UE 802, the additional UE 803, and / or other UEs, via signaling 824. In aspects, the transmitting / providing of the signaling 824 for UE selection may be triggered when the base station 804 computes that a channel auto-correlation update is desired or scheduled, e.g., for a certain location, which may be associated with an indication thereof (e.g., the channel auto-correlation map update indication 624 shown in FIG. 6) . In aspects, transmitting / providing of the signaling 824 for UE selection may be triggered when a vehicle / UE (e.g., the UE 802, the additional UE 803, and / or other UEs) builds a connection (e.g., the connection 622 in FIG. 6) with the base station 804, and the base station 804 randomly / pseudo-randomly selects the vehicles / UEs (e.g., the UE 802, the additional UE 803, and / or other UEs) that should send the channel auto-correlation measurement pilot (s) . In aspects, transmitting / providing of the signaling 824 for UE selection may be triggered when the base station 804 obtains the location information associated with the UE (e.g., the location information 716 in FIG. 7) that the vehicle / UE is in a certain area.
[0106] In aspects, the transmitting / providing of the signaling 824 for UE selection may include a configuration (e.g., the configuration 506 in FIG. 5; the configuration 618 in FIG. 6; or other activation signaling) , and may be based on one or more of (i) a channel auto-correlation map update indication, (ii) an establishment of a connection with the network node (e.g., the base station 804) by UE 802, and / or (iii) location information (described above with respect to FIG. 7) associated with the UE 802 being associated with a selected roadway area of a roadway.
[0107] As noted above for the configuration 860, the base station 808 may be configured to perform crowdsourcing for reception of at least one channel auto-correlation measurement (s) 816. The base station 808 may be configured to broadcast signaling that includes a broadcast auto-correlation measurement pilot (s) 812. In aspects, a header of the broadcast auto-correlation measurement pilot pilot (s) 812 may include an index indicative of a performance of at least one channel auto-correlation measurement (s) 816.
[0108] The UE 802 and / or the additional UE 803 may be configured to receive the broadcast auto-correlation measurement pilot (s) 812 and to perform (at 814) , based on a measurement configuration, the at least one channel auto-correlation measurement (s) 816 based on the broadcast auto-correlation measurement pilot (s) 812. In aspects, vehicles / UEs (e.g., the UE 802, the additional UE 803, and / or other UEs) may volunteer to compute the at least one channel auto-correlation measurement (s) 816 based on the broadcast auto-correlation measurement pilot (s) 812 and be configured to report the at least one channel auto-correlation measurement (s) 816, together with an indication of respective location information, back to the base station 804.
[0109] Accordingly, based on the described aspects, the base station 804 may be configured to generate (e.g., as described at 808 in the configuration 850) a local channel auto-correlation map, over a period of time, that indicates the channel auto-correlation within the cell of the base station 804. In some aspects, for generation (at 808) of the channel auto-correlation map, the base station 804 may be configured to utilize interpolation for locations where channel auto-correlation has not been measured.
[0110] In the configuration 870, the UE 802 may be configured to request a channel auto-correlation value (s) (e.g., 810 as described in the configuration 850) . The UE 802 may be configured to transmit / provide, and the base station 804 may be configured to receive, a request message 820 indicative of a request by the UE 802 for at least one channel auto-correlation value from the channel auto-correlation map. In aspects, the request message 820 may include the location information associated with the UE 802, and the location information associated with the UE may include at least one of a zone identifier, a GNSS location, a segment identifier of a roadway, and / or a lane identifier of the roadway, as described herein with respect to FIG. 7) . The location information associated with the UE 802 may be included in at least one of a BSR, a header of the request message 820, a first communication via a control channel, or a second communication via a unicast data channel.
[0111] The UE 802 may be configured to receive, and the base station 804 may be configured to transmit / provide, based on the request message 820, a request response message 822 that may be indicative of the at least one channel auto-correlation value of the channel auto-correlation map. The request response message may be included in the control channel or the unicast data channel, and the request response message 822 may include at least one of an index indicative of a statistical trustworthiness of the at least one channel auto-correlation value, a quantized statistical distribution of the at least one channel auto-correlation value, and / or the like.
[0112] FIG. 9 is a flowchart 900 of a method of wireless communication. The method may be performed by a UE (e.g., the UE 104, 502, 602, 702, 703, 802, 803; the apparatus 1304) . In some aspects, the method may include aspects described in connection with the communication flow in FIG. 5 and / or aspects described in FIGs. 6, 7, 8. The method may be for channel auto-correlation in radio coverage maps that enables channel measurements to collect auto-correlation information to be performed by network nodes and / or UEs (e.g., in and / or comprising vehicles or other conveyances) , based on measurement pilots, for generation of channel auto-correlation maps to be utilized in communications therebetween. Accordingly, the method may provide for generation of channel auto-correlation coverage maps that improve communications with high Doppler UEs, e.g., increased data rates, by collecting channel auto-correlation information, such as from individual UEs or via crowdsourcing of multiple UEs, and adding such information to radio coverage maps.
[0113] At 902, the UE provides, to a network node, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE based on a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission. As an example, the provision may be performed by one or more of the component 198, the transceiver (s) 1322, and / or the antenna 1380 in FIG. 13. FIG. 5 illustrates, in the context of FIGs. 6, 7, 8, an example of the UE 502 providing such a channel auto-correlation measurement pilot (s) for a network node (e.g., the base station 504) .
[0114] The UE 502 may be configured to receive, and the base station 504 may be configured to transmit / provide, a configuration 506 (e.g., 618 in FIG. 6) . The configuration 506 (e.g., 618 in FIG. 6) may be received by the UE 502, and transmitted / provided by the base station 504, prior to the provision of a channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) from the UE 502 to the base station 504. In aspects, the configuration 506 (e.g., 618 in FIG. 6) may be associated with a periodicity (e.g., 620 in FIG. 6) for the channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) , and the configuration may be indicative of an activation for the UE 502 to provide the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) to the base station 504. The configuration 506 (e.g., 618 in FIG. 6) may be indicative of the periodicity (e.g., 620 in FIG. 6) for channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) being based on a time period length or a period of one or more slots (e.g., 606, 610, 660 in FIG. 6) , in aspects, and the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may comprise at least one demodulation reference signal (DMRS) symbol for the UE 502 or at least one symbol having a length that is longer than a DMRS symbol for the UE 502. In aspects, the configuration 506 (e.g., 618 in FIG. 6) may be indicative of the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) including multiple slots (e.g., 606, 612, 670 in FIG. 6) , and the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6;806 in FIG. 8) may include the multiple slots (e.g., 606, 612, 670 in FIG. 6) . In aspects, the configuration 506 (e.g., 618 in FIG. 6) may be indicative of the periodicity (e.g., 620 in FIG. 6) for the channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) being based on a distance interval (e.g., 620 (d) in FIG. 6) traversed by the UE 502. The distance interval (e.g., 620 (d) in FIG. 6) traversed by the UE 502 may be based on a measurement by the UE 502 of the distance interval (e.g., 620 (d) in FIG. 6) , and the UE 502 may be configured to provide the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) with a provision of a speed (e.g., 614 in FIG. 6; 726 in FIG. 7) experienced by the UE 502. In aspects, the UE 502 may be configured to receive, and the base station 504 may be configured to transmit / provide, the configuration 506 (e.g., 618 in FIG. 6) associated with the periodicity (e.g., 620 in FIG. 6) for the channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) based on at least one of: (i) a channel auto-correlation map (e.g., 818 in FIG. 8) update indication (e.g., 624 in FIG. 6) , (ii) an establishment of a connection (e.g., 622 in FIG. 6) with the network node (e.g., the base station 504) by the UE 502, or (iii) location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 being associated with a selected roadway area of a roadway (e.g., 622 in FIG. 6; 720 in FIG. 7) .
[0115] The UE 502 may be configured to identify (at 508) channel information of a communication channel and location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 based on the configuration 506 (e.g., 618 in FIG. 6) . In aspects, the channel information of a communication channel may be identified (at 508) by performing channel measurements on communication channels between the UE 502 and the base station 504. From such channel measurements, characteristics of the channel may be identified (at 508) as the channel information (e.g., quality statistics, energy, power, SNR / SINR, etc. ) . In aspects, the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 may be identified (at 508) as further being associated with at least one portion of an area of the channel auto-correlation map (e.g., 818 in FIG. 8) , and the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 may include a zone identifier, a GNSS location, a segment identifier of a roadway (e.g., 622 in FIG. 6; 720 in FIG. 7) , a lane identifier of the roadway (e.g., 622 in FIG. 6;720 in FIG. 7) , vehicle information associated with the UE 502 (e.g., make, model, year, etc. ) , or a set of transmission parameters of the UE 502 (e.g., an RF chain) . In aspects, the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 may exclude additional location information (e.g., 718 in FIG. 7) that corresponds to at least one area outside of a boundary of the roadway (e.g., 622 in FIG. 6; 720 in FIG. 7) . That is, aspects herein, such as for vehicle communications, may utilize location information associated a UE that includes information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) within roadway boundaries of the roadway (e.g., 622 in FIG. 6; 720 in FIG. 7) .
[0116] The UE 502 may be configured to transmit / provide, and the base station 504 may be configured to receive, at least one channel auto-correlation measurement pilot (s) 510 (e.g., channel auto-correlation measurement pilot (s) ) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) by corresponding channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) . The at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may be transmitted / provided periodically by the UE 502 and correspondingly received by the base station 504 based on the configuration 506 (e.g., 618 in FIG. 6) . For instance, as noted above, the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may be transmitted / provided via a channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) with a periodicity (e.g., 620 in FIG. 6) of a time period length and / or a number of slots (e.g., 606, 608, 610, 612 in FIG. 6) , as multiple slots (e.g., 606, 612, 670 in FIG. 6) , with a periodicity (e.g., 620 in FIG. 6) associated with a distance traveled by the UE 502 (e.g., a distance interval (e.g., 620 (d) in FIG. 6) traversed by the UE 502, and in such configurations, the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may include or be accompanied by a speed (e.g., 614 in FIG. 6; 726 in FIG. 7) experienced by the UE 502) , and / or the like. In aspects, the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may be transmitted / provided as a DMRS symbol (s) for the UE 502 or as a symbol (s) having a length that is longer than the DMRS symbol for the UE 502.
[0117] At 904, the UE communicates with the network node based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE. As an example, the communication may be performed by one or more of the component 198, the transceiver (s) 1322, and / or the antenna 1380 in FIG. 13. FIG. 5 illustrates, in the context of FIGs. 6, 7, 8, an example of the UE 502 so communicating with a network node (e.g., the base station 504) .
[0118] The base station 504 may be configured to generate a channel auto-correlation map (e.g., 818 in FIG. 8) based at least on a performance of at least one channel auto-correlation measurement using at least one antenna pair of the base station 504. In aspects, the performance of at least one channel auto-correlation measurement may be based on the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) . The UE 502 may be configured to receive, and the base station 504 may be configured to transmit / provide, at least one channel auto-correlation value (e.g., 810 in FIG. 8) of the channel auto-correlation map (e.g., 818 in FIG. 8) , where the channel auto-correlation map (e.g., 818 in FIG. 8) may be based on the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) that indicates the channel information of the communication channel and the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 that was identified (at 508) .
[0119] The UE 502 and the base station 504 may be configured to communicate, e.g., as communications 512, based on the channel auto-correlation map (e.g., 818 in FIG. 8) associated with the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) that indicates the channel information of the communication channel and the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502. The communications 512 between the UE 502 and the base station 504 may be based on the channel auto-correlation map (e.g., 818 in FIG. 8) being associated with the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) . In aspects, the communications 512 between the UE 502 and the base station 504 may be based on a value (s) (e.g., 810 in FIG. 8) of / from the channel auto-correlation map (e.g., 818 in FIG. 8) that are transmitted / provided by the base station 504 and received by the UE 502. In aspects, the communications 512 between the UE 502 and the base station 504 may be based on the channel auto-correlation map (e.g., 818 in FIG. 8) and further based on adaptive rate transmissions.
[0120] FIG. 10 is a flowchart 1000 of a method of wireless communication. The method may be performed by a UE (e.g., the UE 104, 502, 602, 702, 703, 802, 803; the apparatus 1304) . In some aspects, the method may include aspects described in connection with the communication flow in FIG. 5 and / or aspects described in FIGs. 6, 7, 8. The method may be for channel auto-correlation in radio coverage maps that enables channel measurements to collect auto-correlation information to be performed by network nodes and / or UEs (e.g., in and / or comprising vehicles or other conveyances) , based on measurement pilots, for generation of channel auto-correlation maps to be utilized in communications therebetween. Accordingly, the method may provide for generation of channel auto-correlation coverage maps that improve communications with high Doppler UEs, e.g., increased data rates, by collecting channel auto-correlation information, such as from individual UEs or via crowdsourcing of multiple UEs, and adding such information to radio coverage maps.
[0121] At 1002, the UE receives, from the network node prior to the provision of the at least one channel auto-correlation measurement pilot, the configuration associated with the periodicity for the at least one channel auto-correlation measurement pilot transmission, where the configuration is indicative of an activation for providing the at least one channel auto-correlation measurement pilot. As an example, the reception may be performed by one or more of the component 198, the transceiver (s) 1322, and / or the antenna 1380 in FIG. 13. FIG. 5 illustrates, in the context of FIGs. 6, 7, 8, an example of the UE 502 receiving such a configuration from a network node (e.g., the base station 504) .
[0122] The UE 502 may be configured to receive, and the base station 504 may be configured to transmit / provide, a configuration 506 (e.g., 618 in FIG. 6) . The configuration 506 (e.g., 618 in FIG. 6) may be received by the UE 502, and transmitted / provided by the base station 504, prior to the provision of a channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) from the UE 502 to the base station 504. In aspects, the configuration 506 (e.g., 618 in FIG. 6) may be associated with a periodicity (e.g., 620 in FIG. 6) for the channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) , and the configuration may be indicative of an activation for the UE 502 to provide the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) to the base station 504. The configuration 506 (e.g., 618 in FIG. 6) may be indicative of the periodicity (e.g., 620 in FIG. 6) for channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) being based on a time period length or a period of one or more slots (e.g., 606, 610, 660 in FIG. 6) , in aspects, and the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may comprise at least one demodulation reference signal (DMRS) symbol for the UE 502 or at least one symbol having a length that is longer than a DMRS symbol for the UE 502. In aspects, the configuration 506 (e.g., 618 in FIG. 6) may be indicative of the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) including multiple slots (e.g., 606, 612, 670 in FIG. 6) , and the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6;806 in FIG. 8) may include the multiple slots (e.g., 606, 612, 670 in FIG. 6) . In aspects, the configuration 506 (e.g., 618 in FIG. 6) may be indicative of the periodicity (e.g., 620 in FIG. 6) for the channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) being based on a distance interval (e.g., 620 (d) in FIG. 6) traversed by the UE 502. The distance interval (e.g., 620 (d) in FIG. 6) traversed by the UE 502 may be based on a measurement by the UE 502 of the distance interval (e.g., 620 (d) in FIG. 6) , and the UE 502 may be configured to provide the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) with a provision of a speed (e.g., 614 in FIG. 6; 726 in FIG. 7) experienced by the UE 502. In aspects, the UE 502 may be configured to receive, and the base station 504 may be configured to transmit / provide, the configuration 506 (e.g., 618 in FIG. 6) associated with the periodicity (e.g., 620 in FIG. 6) for the channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) based on at least one of: (i) a channel auto-correlation map (e.g., 818 in FIG. 8) update indication (e.g., 624 in FIG. 6) , (ii) an establishment of a connection (e.g., 622 in FIG. 6) with the network node (e.g., the base station 504) by the UE 502, or (iii) location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 being associated with a selected roadway area of a roadway (e.g., 622 in FIG. 6; 720 in FIG. 7) .
[0123] At 1004, the UE determines if a network broadcast of there is a broadcast auto-correlation measurement pilot. As an example, the determination may be performed by one or more of the component 199, the transceiver (s) 1446, and / or the antenna 1480 in FIG. 14, the network interface 1580 in FIG. 15. If so, flowchart 1000 may continue to 1006; if not, flowchart 1000 may continue to 1012.
[0124] At 1006, the UE receives, from the network node, a broadcast auto-correlation measurement pilot, where a header of the broadcast auto-correlation measurement pilot includes an index indicative of a performance of at least one channel auto-correlation measurement. As an example, the reception may be performed by one or more of the component 198, the transceiver (s) 1322, and / or the antenna 1380 in FIG. 13.FIG. 8 illustrates, in the context of FIGs. 5, 6, 7, an example of the UE 802 receiving such a broadcast auto-correlation measurement pilot from a network node (e.g., the base station 804) .
[0125] As noted above for the configuration 860, the base station 808 may be configured to perform crowdsourcing for reception of at least one channel auto-correlation measurement (s) 816. The base station 808 may be configured to broadcast signaling that includes a broadcast auto-correlation measurement pilot (s) 812. In aspects, a header of the broadcast auto-correlation measurement pilot pilot (s) 812 may include an index indicative of a performance of at least one channel auto-correlation measurement (s) 816.
[0126] The UE 802 and / or the additional UE 803 may be configured to receive the broadcast auto-correlation measurement pilot (s) 812 and to perform (at 814) , based on a measurement configuration, the at least one channel auto-correlation measurement (s) 816 based on the broadcast auto-correlation measurement pilot (s) 812. In aspects, vehicles / UEs (e.g., the UE 802, the additional UE 803, and / or other UEs) may volunteer to compute the at least one channel auto-correlation measurement (s) 816 based on the broadcast auto-correlation measurement pilot (s) 812 and be configured to report the at least one channel auto-correlation measurement (s) 816, together with an indication of respective location information, back to the base station 804.
[0127] At 1008, the UE performs, based on a measurement configuration, the at least one channel auto-correlation measurement based on the broadcast auto-correlation measurement pilot. As an example, the channel auto-correlation measurement (s) may be performed by one or more of the component 198, the transceiver (s) 1322, and / or the antenna 1380 in FIG. 13. FIG. 8 illustrates, in the context of FIGs. 5, 6, 7, an example of the UE 802 performing such a channel auto-correlation measurement (s) based on a broadcast auto-correlation measurement pilot from a network node (e.g., the base station 804) .
[0128] The UE 802 and / or the additional UE 803 may be configured to receive the broadcast auto-correlation measurement pilot (s) 812 and to perform (at 814) , based on a measurement configuration, the at least one channel auto-correlation measurement (s) 816 based on the broadcast auto-correlation measurement pilot (s) 812. In aspects, vehicles / UEs (e.g., the UE 802, the additional UE 803, and / or other UEs) may volunteer to compute the at least one channel auto-correlation measurement (s) 816 based on the broadcast auto-correlation measurement pilot (s) 812.
[0129] At 1010, the UE provides, to the network node, the at least one channel auto-correlation measurement and an indication of the location information associated with the UE. As an example, the provision may be performed by one or more of the component 198, the transceiver (s) 1322, and / or the antenna 1380 in FIG. 13. FIG. 8 illustrates, in the context of FIGs. 5, 6, 7, an example of the UE 802 providing such a channel auto-correlation measurement (s) for a network node (e.g., the base station 804) .
[0130] In aspects, vehicles / UEs (e.g., the UE 802, the additional UE 803, and / or other UEs) may volunteer to compute the at least one channel auto-correlation measurement (s) 816 based on the broadcast auto-correlation measurement pilot (s) 812 and be configured to report the at least one channel auto-correlation measurement (s) 816, together with an indication of respective location information, back to the base station 804.
[0131] At 1012, the UE provides, to the network node, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE based on a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission. As an example, the provision may be performed by one or more of the component 198, the transceiver (s) 1322, and / or the antenna 1380 in FIG. 13. FIG. 5 illustrates, in the context of FIGs. 6, 7, 8, an example of the UE 502 providing such a channel auto-correlation measurement pilot (s) for a network node (e.g., the base station 504) .
[0132] The UE 502 may be configured to identify (at 508) channel information of a communication channel and location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 based on the configuration 506 (e.g., 618 in FIG. 6) . In aspects, the channel information of a communication channel may be identified (at 508) by performing channel measurements on communication channels between the UE 502 and the base station 504. From such channel measurements, characteristics of the channel may be identified (at 508) as the channel information (e.g., quality statistics, energy, power, SNR / SINR, etc. ) . In aspects, the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 may be identified (at 508) as further being associated with at least one portion of an area of the channel auto-correlation map (e.g., 818 in FIG. 8) , and the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 may include a zone identifier, a GNSS location, a segment identifier of a roadway (e.g., 622 in FIG. 6; 720 in FIG. 7) , a lane identifier of the roadway (e.g., 622 in FIG. 6;720 in FIG. 7) , vehicle information associated with the UE 502 (e.g., make, model, year, etc. ) , or a set of transmission parameters of the UE 502 (e.g., an RF chain) . In aspects, the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 may exclude additional location information (e.g., 718 in FIG. 7) that corresponds to at least one area outside of a boundary of the roadway (e.g., 622 in FIG. 6; 720 in FIG. 7) . That is, aspects herein, such as for vehicle communications, may utilize location information associated a UE that includes information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) within roadway boundaries of the roadway (e.g., 622 in FIG. 6; 720 in FIG. 7) .
[0133] The UE 502 may be configured to transmit / provide, and the base station 504 may be configured to receive, at least one channel auto-correlation measurement pilot (s) 510 (e.g., channel auto-correlation measurement pilot (s) ) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) by corresponding channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) . The at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may be transmitted / provided periodically by the UE 502 and correspondingly received by the base station 504 based on the configuration 506 (e.g., 618 in FIG. 6) . For instance, as noted above, the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may be transmitted / provided via a channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) with a periodicity (e.g., 620 in FIG. 6) of a time period length and / or a number of slots (e.g., 606, 608, 610, 612 in FIG. 6) , as multiple slots (e.g., 606, 612, 670 in FIG. 6) , with a periodicity (e.g., 620 in FIG. 6) associated with a distance traveled by the UE 502 (e.g., a distance interval (e.g., 620 (d) in FIG. 6) traversed by the UE 502, and in such configurations, the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may include or be accompanied by a speed (e.g., 614 in FIG. 6; 726 in FIG. 7) experienced by the UE 502) , and / or the like. In aspects, the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may be transmitted / provided as a DMRS symbol (s) for the UE 502 or as a symbol (s) having a length that is longer than the DMRS symbol for the UE 502.
[0134] At 1014, the UE determines if a request message is to be provided. As an example, the determination may be performed by one or more of the component 199, the transceiver (s) 1446, and / or the antenna 1480 in FIG. 14, the network interface 1580 in FIG. 15. If so, flowchart 1000 may continue to 1016; if not, flowchart 1000 may continue to 1020.
[0135] At 1016, the UE provides, to the network node, a request message indicative of a request by the UE for at least one channel auto-correlation value of the channel auto-correlation map. As an example, the provision may be performed by one or more of the component 198, the transceiver (s) 1322, and / or the antenna 1380 in FIG. 13. FIG. 8 illustrates, in the context of FIGs. 5, 6, 7, an example of the UE 802 providing such a request message for a network node (e.g., the base station 804) .
[0136] In the configuration 870, the UE 802 may be configured to request a channel auto-correlation value (s) (e.g., 810 as described in the configuration 850) . The UE 802 may be configured to transmit / provide, and the base station 804 may be configured to receive, a request message 820 indicative of a request by the UE 802 for at least one channel auto-correlation value from the channel auto-correlation map. In aspects, the request message 820 may include the location information associated with the UE 802, and the location information associated with the UE may include at least one of a zone identifier, a GNSS location, a segment identifier of a roadway, and / or a lane identifier of the roadway, as described herein with respect to FIG. 7) . The location information associated with the UE 802 may be included in at least one of a BSR, a header of the request message 820, a first communication via a control channel, or a second communication via a unicast data channel.
[0137] At 1018, the UE receives, from the network node and based on the request message, a request response message indicative of the at least one channel auto-correlation value of the channel auto-correlation map. As an example, the reception may be performed by one or more of the component 198, the transceiver (s) 1322, and / or the antenna 1380 in FIG. 13. FIG. 8 illustrates, in the context of FIGs. 5, 6, 7, an example of the UE 802 receiving such a request response message for a network node (e.g., the base station 804) .
[0138] The UE 802 may be configured to receive, and the base station 804 may be configured to transmit / provide, based on the request message 820, a request response message 822 that may be indicative of the at least one channel auto-correlation value of the channel auto-correlation map. The request response message may be included in the control channel or the unicast data channel, and the request response message 822 may include at least one of an index indicative of a statistical trustworthiness of the at least one channel auto-correlation value, a quantized statistical distribution of the at least one channel auto-correlation value, and / or the like.
[0139] At 1020, the UE receives, from the network node, at least one channel auto-correlation value of the channel auto-correlation map, where the channel auto-correlation map is based on the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE. As an example, the communication may be performed by one or more of the component 198, the transceiver (s) 1322, and / or the antenna 1380 in FIG. 13. FIG. 5 illustrates, in the context of FIGs. 6, 7, 8, an example of the UE 502 receiving such a channel auto-correlation value (s) from a network node (e.g., the base station 504) .
[0140] The base station 504 may be configured to generate a channel auto-correlation map (e.g., 818 in FIG. 8) based at least on a performance of at least one channel auto-correlation measurement using at least one antenna pair of the base station 504. In aspects, the performance of at least one channel auto-correlation measurement may be based on the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) . The UE 502 may be configured to receive, and the base station 504 may be configured to transmit / provide, at least one channel auto-correlation value (e.g., 810 in FIG. 8) of the channel auto-correlation map (e.g., 818 in FIG. 8) , where the channel auto-correlation map (e.g., 818 in FIG. 8) may be based on the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) that indicates the channel information of the communication channel and the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 that was identified (at 508) .
[0141] At 1022, the UE communicates with the network node based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE. As an example, the communication may be performed by one or more of the component 198, the transceiver (s) 1322, and / or the antenna 1380 in FIG. 13. FIG. 5 illustrates, in the context of FIGs. 6, 7, 8, an example of the UE 502 so communicating with a network node (e.g., the base station 504) .
[0142] The base station 504 may be configured to generate a channel auto-correlation map (e.g., 818 in FIG. 8) based at least on a performance of at least one channel auto-correlation measurement using at least one antenna pair of the base station 504. In aspects, the performance of at least one channel auto-correlation measurement may be based on the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) . The UE 502 may be configured to receive, and the base station 504 may be configured to transmit / provide, at least one channel auto-correlation value (e.g., 810 in FIG. 8) of the channel auto-correlation map (e.g., 818 in FIG. 8) , where the channel auto-correlation map (e.g., 818 in FIG. 8) may be based on the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) that indicates the channel information of the communication channel and the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 that was identified (at 508) .
[0143] The UE 502 and the base station 504 may be configured to communicate, e.g., as communications 512, based on the channel auto-correlation map (e.g., 818 in FIG. 8) associated with the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) that indicates the channel information of the communication channel and the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502. The communications 512 between the UE 502 and the base station 504 may be based on the channel auto-correlation map (e.g., 818 in FIG. 8) being associated with the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) . In aspects, the communications 512 between the UE 502 and the base station 504 may be based on a value (s) (e.g., 810 in FIG. 8) of / from the channel auto-correlation map (e.g., 818 in FIG. 8) that are transmitted / provided by the base station 504 and received by the UE 502. In aspects, the communications 512 between the UE 502 and the base station 504 may be based on the channel auto-correlation map (e.g., 818 in FIG. 8) and further based on adaptive rate transmissions.
[0144] FIG. 11 is a flowchart 1100 of a method of wireless communication. The method may be performed by a network node such as a base station or gNB (e.g., the base station 102, 504, 704, 804; the network entity 1302, 1402, 1560) ) . In some aspects, the method may include aspects described in connection with the communication flow in FIG. 5 and / or aspects described in FIGs. 6, 7, 8. The method may be for channel auto-correlation in radio coverage maps that enables channel measurements to collect auto-correlation information to be performed by network nodes and / or UEs (e.g., in and / or comprising vehicles or other conveyances) , based on measurement pilots, for generation of channel auto-correlation maps to be utilized in communications therebetween. Accordingly, the method may provide for generation of channel auto-correlation coverage maps that improve communications with high Doppler UEs, e.g., increased data rates, by collecting channel auto-correlation information, such as from individual UEs or via crowdsourcing of multiple UEs, and adding such information to radio coverage maps.
[0145] At 1102, the network node configures a UE with a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission. As an example, the configuration may be performed by one or more of the component 199, the transceiver (s) 1446, and / or the antenna 1480 in FIG. 14, the network interface 1580 in FIG. 15. FIG. 5 illustrates, in the context of FIGs. 6, 7, 8, an example of the base station 504 so configuring a UE (e.g., the UE 502) .
[0146] The UE 502 may be configured to receive, and the base station 504 may be configured to transmit / provide, a configuration 506 (e.g., 618 in FIG. 6) . The configuration 506 (e.g., 618 in FIG. 6) may be received by the UE 502, and transmitted / provided by the base station 504, prior to the provision of a channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) from the UE 502 to the base station 504. In aspects, the configuration 506 (e.g., 618 in FIG. 6) may be associated with a periodicity (e.g., 620 in FIG. 6) for the channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) , and the configuration may be indicative of an activation for the UE 502 to provide the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) to the base station 504. The configuration 506 (e.g., 618 in FIG. 6) may be indicative of the periodicity (e.g., 620 in FIG. 6) for channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) being based on a time period length or a period of one or more slots (e.g., 606, 610, 660 in FIG. 6) , in aspects, and the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may comprise at least one demodulation reference signal (DMRS) symbol for the UE 502 or at least one symbol having a length that is longer than a DMRS symbol for the UE 502. In aspects, the configuration 506 (e.g., 618 in FIG. 6) may be indicative of the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) including multiple slots (e.g., 606, 612, 670 in FIG. 6) , and the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may include the multiple slots (e.g., 606, 612, 670 in FIG. 6) . In aspects, the configuration 506 (e.g., 618 in FIG. 6) may be indicative of the periodicity (e.g., 620 in FIG. 6) for the channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) being based on a distance interval (e.g., 620 (d) in FIG. 6) traversed by the UE 502. The distance interval (e.g., 620 (d) in FIG. 6) traversed by the UE 502 may be based on a measurement by the UE 502 of the distance interval (e.g., 620 (d) in FIG. 6) , and the UE 502 may be configured to provide the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) with a provision of a speed (e.g., 614 in FIG. 6; 726 in FIG. 7) experienced by the UE 502. In aspects, the UE 502 may be configured to receive, and the base station 504 may be configured to transmit / provide, the configuration 506 (e.g., 618 in FIG. 6) associated with the periodicity (e.g., 620 in FIG. 6) for the channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) based on at least one of: (i) a channel auto-correlation map (e.g., 818 in FIG. 8) update indication (e.g., 624 in FIG. 6) , (ii) an establishment of a connection (e.g., 622 in FIG. 6) with the network node (e.g., the base station 504) by the UE 502, or (iii) location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 being associated with a selected roadway area of a roadway (e.g., 622 in FIG. 6; 720 in FIG. 7) .
[0147] At 1104, the network node receives, from the UE and based on the configuration, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE.As an example, the reception may be performed by one or more of the component 199, the transceiver (s) 1446, and / or the antenna 1480 in FIG. 14, the network interface 1580 in FIG. 15. FIG. 5 illustrates, in the context of FIGs. 6, 7, 8, an example of the base station 504 receiving such a channel auto-correlation measurement pilot (s) from a UE (e.g., the UE 502) .
[0148] The UE 502 may be configured to identify (at 508) channel information of a communication channel and location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 based on the configuration 506 (e.g., 618 in FIG. 6) . In aspects, the channel information of a communication channel may be identified (at 508) by performing channel measurements on communication channels between the UE 502 and the base station 504. From such channel measurements, characteristics of the channel may be identified (at 508) as the channel information (e.g., quality statistics, energy, power, SNR / SINR, etc. ) . In aspects, the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 may be identified (at 508) as further being associated with at least one portion of an area of the channel auto-correlation map (e.g., 818 in FIG. 8) , and the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 may include a zone identifier, a GNSS location, a segment identifier of a roadway (e.g., 622 in FIG. 6; 720 in FIG. 7) , a lane identifier of the roadway (e.g., 622 in FIG. 6;720 in FIG. 7) , vehicle information associated with the UE 502 (e.g., make, model, year, etc. ) , or a set of transmission parameters of the UE 502 (e.g., an RF chain) . In aspects, the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 may exclude additional location information (e.g., 718 in FIG. 7) that corresponds to at least one area outside of a boundary of the roadway (e.g., 622 in FIG. 6; 720 in FIG. 7) . That is, aspects herein, such as for vehicle communications, may utilize location information associated a UE that includes information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) within roadway boundaries of the roadway (e.g., 622 in FIG. 6; 720 in FIG. 7) .
[0149] The UE 502 may be configured to transmit / provide, and the base station 504 may be configured to receive, at least one channel auto-correlation measurement pilot (s) 510 (e.g., channel auto-correlation measurement pilot (s) ) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) by corresponding channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) . The at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may be transmitted / provided periodically by the UE 502 and correspondingly received by the base station 504 based on the configuration 506 (e.g., 618 in FIG. 6) . For instance, as noted above, the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may be transmitted / provided via a channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) with a periodicity (e.g., 620 in FIG. 6) of a time period length and / or a number of slots (e.g., 606, 608, 610, 612 in FIG. 6) , as multiple slots (e.g., 606, 612, 670 in FIG. 6) , with a periodicity (e.g., 620 in FIG. 6) associated with a distance traveled by the UE 502 (e.g., a distance interval (e.g., 620 (d) in FIG. 6) traversed by the UE 502, and in such configurations, the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may include or be accompanied by a speed (e.g., 614 in FIG. 6; 726 in FIG. 7) experienced by the UE 502) , and / or the like. In aspects, the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may be transmitted / provided as a DMRS symbol (s) for the UE 502 or as a symbol (s) having a length that is longer than the DMRS symbol for the UE 502.
[0150] At 1106, the network node communicates with the UE based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE. As an example, the communication may be performed by one or more of the component 199, the transceiver (s) 1446, and / or the antenna 1480 in FIG. 14, the network interface 1580 in FIG. 15. FIG. 5 illustrates, in the context of FIGs. 6, 7, 8, an example of the base station 504 so communicating with a UE (e.g., the UE 502) .
[0151] The base station 504 may be configured to generate a channel auto-correlation map (e.g., 818 in FIG. 8) based at least on a performance of at least one channel auto-correlation measurement using at least one antenna pair of the base station 504. In aspects, the performance of at least one channel auto-correlation measurement may be based on the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) . The UE 502 may be configured to receive, and the base station 504 may be configured to transmit / provide, at least one channel auto-correlation value (e.g., 810 in FIG. 8) of the channel auto-correlation map (e.g., 818 in FIG. 8) , where the channel auto-correlation map (e.g., 818 in FIG. 8) may be based on the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) that indicates the channel information of the communication channel and the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 that was identified (at 508) .
[0152] The UE 502 and the base station 504 may be configured to communicate, e.g., as communications 512, based on the channel auto-correlation map (e.g., 818 in FIG. 8) associated with the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) that indicates the channel information of the communication channel and the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502. The communications 512 between the UE 502 and the base station 504 may be based on the channel auto-correlation map (e.g., 818 in FIG. 8) being associated with the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) . In aspects, the communications 512 between the UE 502 and the base station 504 may be based on a value (s) (e.g., 810 in FIG. 8) of / from the channel auto-correlation map (e.g., 818 in FIG. 8) that are transmitted / provided by the base station 504 and received by the UE 502. In aspects, the communications 512 between the UE 502 and the base station 504 may be based on the channel auto-correlation map (e.g., 818 in FIG. 8) and further based on adaptive rate transmissions.
[0153] FIG. 12 is a flowchart 1200 of a method of wireless communication. The method may be performed by a network node such as a base station or gNB (e.g., the base station 102, 504, 704, 804; the network entity 1302, 1402, 1560) ) . In some aspects, the method may include aspects described in connection with the communication flow in FIG. 5 and / or aspects described in FIGs. 6, 7, 8. The method may be for channel auto-correlation in radio coverage maps that enables channel measurements to collect auto-correlation information to be performed by network nodes and / or UEs (e.g., in and / or comprising vehicles or other conveyances) , based on measurement pilots, for generation of channel auto-correlation maps to be utilized in communications therebetween. Accordingly, the method may provide for generation of channel auto-correlation coverage maps that improve communications with high Doppler UEs, e.g., increased data rates, by collecting channel auto-correlation information, such as from individual UEs or via crowdsourcing of multiple UEs, and adding such information to radio coverage maps.
[0154] At 1202, the network node configures a UE with a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission. As an example, the configuration may be performed by one or more of the component 199, the transceiver (s) 1446, and / or the antenna 1480 in FIG. 14, the network interface 1580 in FIG. 15. FIG. 5 illustrates, in the context of FIGs. 6, 7, 8, an example of the base station 504 so configuring a UE (e.g., the UE 502) .
[0155] The UE 502 may be configured to receive, and the base station 504 may be configured to transmit / provide, a configuration 506 (e.g., 618 in FIG. 6) . The configuration 506 (e.g., 618 in FIG. 6) may be received by the UE 502, and transmitted / provided by the base station 504, prior to the provision of a channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) from the UE 502 to the base station 504. In aspects, the configuration 506 (e.g., 618 in FIG. 6) may be associated with a periodicity (e.g., 620 in FIG. 6) for the channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) , and the configuration may be indicative of an activation for the UE 502 to provide the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) to the base station 504. The configuration 506 (e.g., 618 in FIG. 6) may be indicative of the periodicity (e.g., 620 in FIG. 6) for channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) being based on a time period length or a period of one or more slots (e.g., 606, 610, 660 in FIG. 6) , in aspects, and the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may comprise at least one demodulation reference signal (DMRS) symbol for the UE 502 or at least one symbol having a length that is longer than a DMRS symbol for the UE 502. In aspects, the configuration 506 (e.g., 618 in FIG. 6) may be indicative of the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) including multiple slots (e.g., 606, 612, 670 in FIG. 6) , and the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6;806 in FIG. 8) may include the multiple slots (e.g., 606, 612, 670 in FIG. 6) . In aspects, the configuration 506 (e.g., 618 in FIG. 6) may be indicative of the periodicity (e.g., 620 in FIG. 6) for the channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) being based on a distance interval (e.g., 620 (d) in FIG. 6) traversed by the UE 502. The distance interval (e.g., 620 (d) in FIG. 6) traversed by the UE 502 may be based on a measurement by the UE 502 of the distance interval (e.g., 620 (d) in FIG. 6) , and the UE 502 may be configured to provide the channel auto-correlation measurement pilot (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) with a provision of a speed (e.g., 614 in FIG. 6; 726 in FIG. 7) experienced by the UE 502. In aspects, the UE 502 may be configured to receive, and the base station 504 may be configured to transmit / provide, the configuration 506 (e.g., 618 in FIG. 6) associated with the periodicity (e.g., 620 in FIG. 6) for the channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) based on at least one of: (i) a channel auto-correlation map (e.g., 818 in FIG. 8) update indication (e.g., 624 in FIG. 6) , (ii) an establishment of a connection (e.g., 622 in FIG. 6) with the network node (e.g., the base station 504) by the UE 502, or (iii) location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 being associated with a selected roadway area of a roadway (e.g., 622 in FIG. 6; 720 in FIG. 7) .
[0156] At 1204, the network node determines if a network broadcast of a broadcast auto-correlation measurement pilot is performed. As an example, the provision of the broadcast may be performed by one or more of the component 199, the transceiver (s) 1446, and / or the antenna 1480 in FIG. 14, the network interface 1580 in FIG. 15. If so, flowchart 1200 may continue to 1206; if not, flowchart 1200 may continue to 1210.
[0157] At 1206, the network node provides, for the UE, a broadcast auto-correlation measurement pilot, where a header of the broadcast auto-correlation measurement pilot includes an index indicative of a performance of at least one channel auto-correlation measurement. As an example, the provision may be performed by one or more of the component 199, the transceiver (s) 1446, and / or the antenna 1480 in FIG. 14, the network interface 1580 in FIG. 15. FIG. 8 illustrates, in the context of FIGs. 5, 6, 7, an example of the base station 804 providing such a broadcast auto-correlation measurement pilot for a UE (e.g., the UE 802) .
[0158] As noted above for the configuration 860, the base station 808 may be configured to perform crowdsourcing for reception of at least one channel auto-correlation measurement (s) 816. The base station 808 may be configured to broadcast signaling that includes a broadcast auto-correlation measurement pilot (s) 812. In aspects, a header of the broadcast auto-correlation measurement pilot pilot (s) 812 may include an index indicative of a performance of at least one channel auto-correlation measurement (s) 816.
[0159] The UE 802 and / or the additional UE 803 may be configured to receive the broadcast auto-correlation measurement pilot (s) 812 and to perform (at 814) , based on a measurement configuration, the at least one channel auto-correlation measurement (s) 816 based on the broadcast auto-correlation measurement pilot (s) 812. In aspects, vehicles / UEs (e.g., the UE 802, the additional UE 803, and / or other UEs) may volunteer to compute the at least one channel auto-correlation measurement (s) 816 based on the broadcast auto-correlation measurement pilot (s) 812 and be configured to report the at least one channel auto-correlation measurement (s) 816, together with an indication of respective location information, back to the base station 804.
[0160] At 1208, the network node receives, from the UE, the at least one channel auto-correlation measurement, based on the broadcast auto-correlation measurement pilot, and an indication of the location information associated with the UE. As an example, the reception may be performed by one or more of the component 199, the transceiver (s) 1446, and / or the antenna 1480 in FIG. 14, the network interface 1580 in FIG. 15. FIG. 8 illustrates, in the context of FIGs. 5, 6, 7, an example of the base station 804 receiving such a channel auto-correlation measurement (s) from a UE (e.g., the UE 802) .
[0161] The UE 802 and / or the additional UE 803 may be configured to receive the broadcast auto-correlation measurement pilot (s) 812 and to perform (at 814) , based on a measurement configuration, the at least one channel auto-correlation measurement (s) 816 based on the broadcast auto-correlation measurement pilot (s) 812. In aspects, vehicles / UEs (e.g., the UE 802, the additional UE 803, and / or other UEs) may volunteer to compute the at least one channel auto-correlation measurement (s) 816 based on the broadcast auto-correlation measurement pilot (s) 812 and be configured to report the at least one channel auto-correlation measurement (s) 816, together with an indication of respective location information, back to the base station 804.
[0162] Accordingly, based on the described aspects, the base station 804 may be configured to generate (e.g., as described at 808 in the configuration 850) a local channel auto-correlation map, over a period of time, that indicates the channel auto-correlation within the cell of the base station 804. In some aspects, for generation (at 808) of the channel auto-correlation map, the base station 804 may be configured to utilize interpolation for locations where channel auto-correlation has not been measured.
[0163] At 1210, the network node receives, from the UE and based on the configuration, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE.As an example, the reception may be performed by one or more of the component 199, the transceiver (s) 1446, and / or the antenna 1480 in FIG. 14, the network interface 1580 in FIG. 15. FIG. 5 illustrates, in the context of FIGs. 6, 7, 8, an example of the base station 504 receiving such a channel auto-correlation measurement pilot (s) from a UE (e.g., the UE 502) .
[0164] The UE 502 may be configured to identify (at 508) channel information of a communication channel and location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 based on the configuration 506 (e.g., 618 in FIG. 6) . In aspects, the channel information of a communication channel may be identified (at 508) by performing channel measurements on communication channels between the UE 502 and the base station 504. From such channel measurements, characteristics of the channel may be identified (at 508) as the channel information (e.g., quality statistics, energy, power, SNR / SINR, etc. ) . In aspects, the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 may be identified (at 508) as further being associated with at least one portion of an area of the channel auto-correlation map (e.g., 818 in FIG. 8) , and the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 may include a zone identifier, a GNSS location, a segment identifier of a roadway (e.g., 622 in FIG. 6; 720 in FIG. 7) , a lane identifier of the roadway (e.g., 622 in FIG. 6; 720 in FIG. 7) , vehicle information associated with the UE 502 (e.g., make, model, year, etc. ) , or a set of transmission parameters of the UE 502 (e.g., an RF chain) . In aspects, the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 may exclude additional location information (e.g., 718 in FIG. 7) that corresponds to at least one area outside of a boundary of the roadway (e.g., 622 in FIG. 6; 720 in FIG. 7) . That is, aspects herein, such as for vehicle communications, may utilize location information associated a UE that includes information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) within roadway boundaries of the roadway (e.g., 622 in FIG. 6; 720 in FIG. 7) .
[0165] The UE 502 may be configured to transmit / provide, and the base station 504 may be configured to receive, at least one channel auto-correlation measurement pilot (s) 510 (e.g., channel auto-correlation measurement pilot (s) ) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) by corresponding channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) . The at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may be transmitted / provided periodically by the UE 502 and correspondingly received by the base station 504 based on the configuration 506 (e.g., 618 in FIG. 6) . For instance, as noted above, the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may be transmitted / provided via a channel auto-correlation measurement pilot (s) transmission (s) (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) with a periodicity (e.g., 620 in FIG. 6) of a time period length and / or a number of slots (e.g., 606, 608, 610, 612 in FIG. 6) , as multiple slots (e.g., 606, 612, 670 in FIG. 6) , with a periodicity (e.g., 620 in FIG. 6) associated with a distance traveled by the UE 502 (e.g., a distance interval (e.g., 620 (d) in FIG. 6) traversed by the UE 502, and in such configurations, the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may include or be accompanied by a speed (e.g., 614 in FIG. 6; 726 in FIG. 7) experienced by the UE 502) , and / or the like. In aspects, the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) may be transmitted / provided as a DMRS symbol (s) for the UE 502 or as a symbol (s) having a length that is longer than the DMRS symbol for the UE 502.
[0166] At 1212, the network node generates the channel auto-correlation map based at least on a performance, based on the at least one channel auto-correlation measurement pilot, of at least one channel auto-correlation measurement using at least one antenna pair. As an example, the generation may be performed by one or more of the component 199, the transceiver (s) 1446, and / or the antenna 1480 in FIG. 14, the network interface 1580 in FIG. 15. FIG. 8 illustrates, in the context of FIGs. 5, 6, 7, an example of the base station 804 generating such a channel auto-correlation map based on a channel auto-correlation measurement pilot (s) from a UE (e.g., the UE 802) .
[0167] The base station 504 may be configured to generate a channel auto-correlation map based at least on a performance of at least one channel auto-correlation measurement using at least one antenna pair of the base station 504. In aspects, the performance of at least one channel auto-correlation measurement may be based on the at least one channel auto-correlation measurement pilot (s) 510. The UE 502 may be configured to receive, and the base station 504 may be configured to transmit / provide, at least one channel auto-correlation value of the channel auto-correlation map, where the channel auto-correlation map may be based on the at least one channel auto-correlation measurement pilot (s) 510 that indicates the channel information of the communication channel and the location information associated with the UE 502 that was identified (at 508) .
[0168] In the configuration 850, the UE 802 may be configured to transmit / provide, and the base station 804 may be configured to receive, at least one channel auto-correlation pilot (s) 806 (e.g., as similarly described in FIG. 5 (510) ) . The base station 804 may be configured to generate (at 808) a channel auto-correlation map 818 based at least on a performance of at least one channel auto-correlation measurement using at least one antenna pair of the base station 804. In aspects, the performance of at least one channel auto-correlation measurement may be based on the at least one channel auto-correlation measurement pilot (s) 806. In aspects, the channel auto-correlation map 818 may be stored locally near the base station 804 or globally on a server at a different geographic location than the base station 804.
[0169] The UE 802 may be configured to receive, and the base station 804 may be configured to transmit / provide, at least one channel auto-correlation value (s) 810 of the channel auto-correlation map 818 that is generated (at 808) . In aspects, the channel auto-correlation map 818 and / or the at least one channel auto-correlation value (s) 810 may be based on the at least one channel auto-correlation measurement pilot (s) 806 that indicates the channel information of the communication channel and the location information associated with the UE 802 that was identified (e.g., in FIG. 5 (at 508) ) .
[0170] At 1214, the network node determines if a UE request for a channel auto-correlation value (s) is to be processed. As an example, the determination may be performed by one or more of the component 199, the transceiver (s) 1446, and / or the antenna 1480 in FIG. 14, the network interface 1580 in FIG. 15. If so, flowchart 1200 may continue to 1216; if not, flowchart 1200 may continue to 1220.
[0171] At 1216, the network node receives, from the UE, a request message indicative of a request by the UE for at least one channel auto-correlation value of the channel auto-correlation map. As an example, the reception may be performed by one or more of the component 199, the transceiver (s) 1446, and / or the antenna 1480 in FIG. 14, the network interface 1580 in FIG. 15. FIG. 8 illustrates, in the context of FIGs. 5, 6, 7, an example of the base station 804 receiving such a request message from a UE (e.g., the UE 802) .
[0172] In the configuration 870, the UE 802 may be configured to request a channel auto-correlation value (s) (e.g., 810 as described in the configuration 850) . The UE 802 may be configured to transmit / provide, and the base station 804 may be configured to receive, a request message 820 indicative of a request by the UE 802 for at least one channel auto-correlation value from the channel auto-correlation map. In aspects, the request message 820 may include the location information associated with the UE 802, and the location information associated with the UE may include at least one of a zone identifier, a GNSS location, a segment identifier of a roadway, and / or a lane identifier of the roadway, as described herein with respect to FIG. 7) . The location information associated with the UE 802 may be included in at least one of a BSR, a header of the request message 820, a first communication via a control channel, or a second communication via a unicast data channel.
[0173] At 1218, the network node provides, for the UE and based on the request message, a request response message indicative of the at least one channel auto-correlation value of the channel auto-correlation map. As an example, the provision may be performed by one or more of the component 199, the transceiver (s) 1446, and / or the antenna 1480 in FIG. 14, the network interface 1580 in FIG. 15. FIG. 8 illustrates, in the context of FIGs. 5, 6, 7, an example of the base station 804 providing such a request response message for a UE (e.g., the UE 802) .
[0174] The UE 802 may be configured to receive, and the base station 804 may be configured to transmit / provide, based on the request message 820, a request response message 822 that may be indicative of the at least one channel auto-correlation value of the channel auto-correlation map. The request response message may be included in the control channel or the unicast data channel, and the request response message 822 may include at least one of an index indicative of a statistical trustworthiness of the at least one channel auto-correlation value, a quantized statistical distribution of the at least one channel auto-correlation value, and / or the like.
[0175] At 1220, the network node provides, for the UE, at least one channel auto-correlation value of the channel auto-correlation map, where the channel auto-correlation map is based on the at least one channel auto-correlation measurement. As an example, the provision may be performed by one or more of the component 199, the transceiver (s) 1446, and / or the antenna 1480 in FIG. 14, the network interface 1580 in FIG. 15. FIG. 5 illustrates, in the context of FIGs. 6, 7, 8, an example of the base station 504 providing such a channel auto-correlation value (s) for a UE (e.g., the UE 502) .
[0176] The base station 504 may be configured to generate a channel auto-correlation map (e.g., 818 in FIG. 8) based at least on a performance of at least one channel auto-correlation measurement using at least one antenna pair of the base station 504. In aspects, the performance of at least one channel auto-correlation measurement may be based on the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) . The UE 502 may be configured to receive, and the base station 504 may be configured to transmit / provide, at least one channel auto-correlation value (e.g., 810 in FIG. 8) of the channel auto-correlation map (e.g., 818 in FIG. 8) , where the channel auto-correlation map (e.g., 818 in FIG. 8) may be based on the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) that indicates the channel information of the communication channel and the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502 that was identified (at 508) .
[0177] At 1222, the network node communicates with the UE based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE. As an example, the communication may be performed by one or more of the component 199, the transceiver (s) 1446, and / or the antenna 1480 in FIG. 14, the network interface 1580 in FIG. 15. FIG. 5 illustrates, in the context of FIGs. 6, 7, 8, an example of the base station 504 so communicating with a UE (e.g., the UE 502) .
[0178] The UE 502 and the base station 504 may be configured to communicate, e.g., as communications 512, based on the channel auto-correlation map (e.g., 818 in FIG. 8) associated with the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) that indicates the channel information of the communication channel and the location information (e.g., 706, 708, 710, 712, 714, 716, 724 in FIG. 7) associated with the UE 502. The communications 512 between the UE 502 and the base station 504 may be based on the channel auto-correlation map (e.g., 818 in FIG. 8) being associated with the at least one channel auto-correlation measurement pilot (s) 510 (e.g., 608, 610, 612 in FIG. 6; 806 in FIG. 8) . In aspects, the communications 512 between the UE 502 and the base station 504 may be based on a value (s) (e.g., 810 in FIG. 8) of / from the channel auto-correlation map (e.g., 818 in FIG. 8) that are transmitted / provided by the base station 504 and received by the UE 502. In aspects, the communications 512 between the UE 502 and the base station 504 may be based on the channel auto-correlation map (e.g., 818 in FIG. 8) and further based on adaptive rate transmissions.
[0179] FIG. 13 is a diagram 1300 illustrating an example of a hardware implementation for an apparatus 1304. The apparatus 1304 may be a UE, a component of a UE, or may implement UE functionality. In some aspects, the apparatus 1304 may include at least one cellular baseband processor 1324 (also referred to as a modem) coupled to one or more transceivers 1322 (e.g., cellular RF transceiver) . The cellular baseband processor (s) 1324 may include at least one on-chip memory 1324'. In some aspects, the apparatus 1304 may further include one or more subscriber identity modules (SIM) cards 1320 and at least one application processor 1306 coupled to a secure digital (SD) card 1308 and a screen 1310. The application processor (s) 1306 may include on-chip memory 1306'. In some aspects, the apparatus 1304 may further include a Bluetooth module 1312, a WLAN module 1314, an SPS module 1316 (e.g., GNSS module) , one or more sensor modules 1318 (e.g., barometric pressure sensor / altimeter; motion sensor such as inertial measurement unit (IMU) , gyroscope, and / or accelerometer (s) ; light detection and ranging (LIDAR) , radio assisted detection and ranging (RADAR) , sound navigation and ranging (SONAR) , magnetometer, audio and / or other technologies used for positioning) , additional memory modules 1326, a power supply 1330, and / or a camera 1332. The Bluetooth module 1312, the WLAN module 1314, and the SPS module 1316 may include an on-chip transceiver (TRX) (or in some cases, just a receiver (RX) ) . The Bluetooth module 1312, the WLAN module 1314, and the SPS module 1316 may include their own dedicated antennas and / or utilize the antennas 1380 for communication. The cellular baseband processor (s) 1324 communicates through the transceiver (s) 1322 via one or more antennas 1380 with the UE 104 and / or with an RU associated with a network entity 1302. The cellular baseband processor (s) 1324 and the application processor (s) 1306 may each include a computer-readable medium / memory 1324', 1306', respectively. The additional memory modules 1326 may also be considered a computer-readable medium / memory. Each computer-readable medium / memory 1324', 1306', 1326 may be non-transitory. The cellular baseband processor (s) 1324 and the application processor (s) 1306 are each responsible for general processing, including the execution of software stored on the computer-readable medium / memory. The software, when executed by the cellular baseband processor (s) 1324 / application processor (s) 1306, causes the cellular baseband processor (s) 1324 / application processor (s) 1306 to perform the various functions described supra. The cellular baseband processor (s) 1324 and the application processor (s) 1306 are configured to perform the various functions described supra based at least in part of the information stored in the memory. That is, the cellular baseband processor (s) 1324 and the application processor (s) 1306 may be configured to perform a first subset of the various functions described supra without information stored in the memory and may be configured to perform a second subset of the various functions described supra based on the information stored in the memory. The computer-readable medium / memory may also be used for storing data that is manipulated by the cellular baseband processor (s) 1324 / application processor (s) 1306 when executing software. The cellular baseband processor (s) 1324 / application processor (s) 1306 may be a component of the UE 350 and may include the at least one 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 apparatus 1304 may be at least one processor chip (modem and / or application) and include just the cellular baseband processor (s) 1324 and / or the application processor (s) 1306, and in another configuration, the apparatus 1304 may be the entire UE (e.g., see UE 350 of FIG. 3) and include the additional modules of the apparatus 1304.
[0180] As discussed supra, the component 198 may be configured to provide, to a network node, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE based on a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission. The component 198 may also be configured to communicate with the network node based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE. The component 198 may be configured to receive, from the network node prior to the provision of the at least one channel auto-correlation measurement pilot, the configuration associated with the periodicity for the at least one channel auto-correlation measurement pilot transmission, where the configuration is indicative of an activation for providing the at least one channel auto-correlation measurement pilot. The component 198 may be configured to receive, from the network node, at least one channel auto-correlation value of the channel auto-correlation map, where the channel auto-correlation map is based on the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE. The component 198 may be configured to receive, from the network node, a broadcast auto-correlation measurement pilot, where a header of the broadcast auto-correlation measurement pilot includes an index indicative of a performance of at least one channel auto-correlation measurement. The component 198 may be configured to perform, based on a measurement configuration, the at least one channel auto-correlation measurement based on the broadcast auto-correlation measurement pilot. The component 198 may be configured to provide, to the network node, the at least one channel auto-correlation measurement and an indication of the location information associated with the UE. The component 198 may be configured to provide, to the network node, a request message indicative of a request by the UE for at least one channel auto-correlation value from the channel auto-correlation map. The component 198 may be configured to receive, from the network node and based on the request message, a request response message indicative of the at least one channel auto-correlation value of the channel auto-correlation map. The component 198 may be further configured to perform any of the aspects described in connection with the flowcharts in any of FIGs. 9, 10, 11, 12 and / or any of the aspects performed by a UE for any of FIGs. 4-8. The component 198 may be within the cellular baseband processor (s) 1324, the application processor (s) 1306, or both the cellular baseband processor (s) 1324 and the application processor (s) 1306. The component 198 may be one or more hardware components specifically configured to carry out the stated processes / algorithm, implemented by one or more processors configured to perform the stated processes / algorithm, stored within a computer-readable medium for implementation by one or more processors, or some combination thereof. When multiple processors are implemented, the multiple processors may perform the stated processes / algorithm individually or in combination. As shown, the apparatus 1304 may include a variety of components configured for various functions. In one configuration, the apparatus 1304, and in particular the cellular baseband processor (s) 1324 and / or the application processor (s) 1306, may include means for providing, to a network node, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE based on a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission. In the configuration, the apparatus 1304, and in particular the cellular baseband processor (s) 1324 and / or the application processor (s) 1306, may include means for communicating with the network node based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE. In one configuration, the apparatus 1304, and in particular the cellular baseband processor (s) 1324 and / or the application processor (s) 1306, may include means for receiving, from the network node prior to the provision of the at least one channel auto-correlation measurement pilot, the configuration associated with the periodicity for the at least one channel auto-correlation measurement pilot transmission, where the configuration is indicative of an activation for providing the at least one channel auto-correlation measurement pilot. In one configuration, the apparatus 1304, and in particular the cellular baseband processor (s) 1324 and / or the application processor (s) 1306, may include means for receiving, from the network node, at least one channel auto-correlation value of the channel auto-correlation map, where the channel auto-correlation map is based on the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE. In one configuration, the apparatus 1304, and in particular the cellular baseband processor (s) 1324 and / or the application processor (s) 1306, may include means for receiving, from the network node, a broadcast auto-correlation measurement pilot, where a header of the broadcast auto-correlation measurement pilot includes an index indicative of a performance of at least one channel auto-correlation measurement. In one configuration, the apparatus 1304, and in particular the cellular baseband processor (s) 1324 and / or the application processor (s) 1306, may include means for performing, based on a measurement configuration, the at least one channel auto-correlation measurement based on the broadcast auto-correlation measurement pilot. In one configuration, the apparatus 1304, and in particular the cellular baseband processor (s) 1324 and / or the application processor (s) 1306, may include means for providing, to the network node, the at least one channel auto-correlation measurement and an indication of the location information associated with the UE. In one configuration, the apparatus 1304, and in particular the cellular baseband processor (s) 1324 and / or the application processor (s) 1306, may include means for providing, to the network node, a request message indicative of a request by the UE for at least one channel auto-correlation value from the channel auto-correlation map. In one configuration, the apparatus 1304, and in particular the cellular baseband processor (s) 1324 and / or the application processor (s) 1306, may include means for receiving, from the network node and based on the request message, a request response message indicative of the at least one channel auto-correlation value of the channel auto-correlation map. The means may be the component 198 of the apparatus 1304 configured to perform the functions recited by the means. As described supra, the apparatus 1304 may include the TX processor 368, the RX processor 356, and the controller / processor 359. As such, in one configuration, the means may be the TX processor 368, the RX processor 356, and / or the controller / processor 359 configured to perform the functions recited by the means.
[0181] FIG. 14 is a diagram 1400 illustrating an example of a hardware implementation for a network entity 1402. The network entity 1402 may be a BS, a component of a BS, or may implement BS functionality. The network entity 1402 may include at least one of a CU 1410, a DU 1430, or an RU 1440. For example, depending on the layer functionality handled by the component 199, the network entity 1402 may include the CU 1410; both the CU 1410 and the DU 1430; each of the CU 1410, the DU 1430, and the RU 1440; the DU 1430; both the DU 1430 and the RU 1440; or the RU 1440. The CU 1410 may include at least one CU processor 1412. The CU processor (s) 1412 may include on-chip memory 1412'. In some aspects, the CU 1410 may further include additional memory modules 1414 and a communications interface 1418. The CU 1410 communicates with the DU 1430 through a midhaul link, such as an F1 interface. The DU 1430 may include at least one DU processor 1432. The DU processor (s) 1432 may include on-chip memory 1432'. In some aspects, the DU 1430 may further include additional memory modules 1434 and a communications interface 1438. The DU 1430 communicates with the RU 1440 through a fronthaul link. The RU 1440 may include at least one RU processor 1442. The RU processor (s) 1442 may include on-chip memory 1442'. In some aspects, the RU 1440 may further include additional memory modules 1444, one or more transceivers 1446, antennas 1480, and a communications interface 1448. The RU 1440 communicates with the UE 104. The on-chip memory 1412', 1432', 1442' and the additional memory modules 1414, 1434, 1444 may each be considered a computer-readable medium / memory. Each computer-readable medium / memory may be non-transitory. Each of the processors 1412, 1432, 1442 is responsible for general processing, including the execution of software stored on the computer-readable medium / memory. The software, when executed by the corresponding processor (s) causes the processor (s) to perform the various functions described supra. The computer-readable medium / memory may also be used for storing data that is manipulated by the processor (s) when executing software.
[0182] As discussed supra, the component 199 may be configured to configure a UE with a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission. The component 199 may also be configured to receive, from the UE and based on the configuration, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE. The component 199 may also be configured to communicate with the UE based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE. The component 199 may be configured to generate the channel auto-correlation map based at least on performing, based on the at least one channel auto-correlation measurement pilot, at least one channel auto-correlation measurement using at least one antenna pair. The component 199 may be configured to provide, for the UE, at least one channel auto-correlation value of the channel auto-correlation map, where the channel auto-correlation map is based on the at least one channel auto-correlation measurement. The component 199 may be configured to provide, for the UE, a broadcast auto-correlation measurement pilot, where a header of the broadcast auto-correlation measurement pilot includes an index indicative of a performance of at least one channel auto-correlation measurement. The component 199 may be configured to receive, from the UE, the at least one channel auto-correlation measurement, based on the broadcast auto-correlation measurement pilot, and an indication of the location information associated with the UE. The component 199 may be configured to receive, from the UE, a request message indicative of a request by the UE for at least one channel auto-correlation value of the channel auto-correlation map. The component 199 may be configured to provide, for the UE and based on the request message, a request response message indicative of the at least one channel auto-correlation value. The component 199 may be further configured to perform any of the aspects described in connection with the flowcharts in any of FIGs. 9, 10, 11, 12 and / or any of the aspects performed by a network node (e.g., a base station, gNB, etc. ) for any of FIGs. 4-8. The component 199 may be within one or more processors of one or more of the CU 1410, DU 1430, and the RU 1440. The component 199 may be one or more hardware components specifically configured to carry out the stated processes / algorithm, implemented by one or more processors configured to perform the stated processes / algorithm, stored within a computer-readable medium for implementation by one or more processors, or some combination thereof. When multiple processors are implemented, the multiple processors may perform the stated processes / algorithm individually or in combination. The network entity 1402 may include a variety of components configured for various functions. In one configuration, the network entity 1402 may include means for configuring a UE with a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission. In the configuration, the network entity 1402 may include means for receiving, from the UE and based on the configuration, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE. In the configuration, the network entity 1402 may include means for communicating with the UE based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE. In one configuration, the network entity 1402 may include means for generating the channel auto-correlation map based at least on performing, based on the at least one channel auto-correlation measurement pilot, at least one channel auto-correlation measurement using at least one antenna pair. In one configuration, the network entity 1402 may include means for providing, for the UE, at least one channel auto-correlation value of the channel auto-correlation map, where the channel auto-correlation map is based on the at least one channel auto-correlation measurement. In one configuration, the network entity 1402 may include means for providing, for the UE, a broadcast auto-correlation measurement pilot, where a header of the broadcast auto-correlation measurement pilot includes an index indicative of a performance of at least one channel auto-correlation measurement. In one configuration, the network entity 1402 may include means for receiving, from the UE, the at least one channel auto-correlation measurement, based on the broadcast auto-correlation measurement pilot, and an indication of the location information associated with the UE. In one configuration, the network entity 1402 may include means for receiving, from the UE, a request message indicative of a request by the UE for at least one channel auto-correlation value of the channel auto-correlation map. In one configuration, the network entity 1402 may include means for providing, for the UE and based on the request message, a request response message indicative of the at least one channel auto-correlation value. The means may be the component 199 of the network entity 1402 configured to perform the functions recited by the means. As described supra, the network entity 1402 may include the TX processor 316, the RX processor 370, and the controller / processor 375. As such, 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.
[0183] FIG. 15 is a diagram 1500 illustrating an example of a hardware implementation for a network entity 1560. In one example, the network entity 1560 may be within the core network 120. The network entity 1560 may include at least one network processor 1512. The network processor (s) 1512 may include on-chip memory 1512'. In some aspects, the network entity 1560 may further include additional memory modules 1514. The network entity 1560 communicates via the network interface 1580 directly (e.g., backhaul link) or indirectly (e.g., through a RIC) with the CU 1502 and / or the UE 104. The on-chip memory 1512' and the additional memory modules 1514 may each be considered a computer-readable medium / memory. Each computer-readable medium / memory may be non-transitory. The network processor (s) 1512 is responsible for general processing, including the execution of software stored on the computer-readable medium / memory. The software, when executed by the corresponding processor (s) causes the processor (s) to perform the various functions described supra. The computer-readable medium / memory may also be used for storing data that is manipulated by the processor (s) when executing software.
[0184] As discussed supra, the component 199 may be configured to configure a UE with a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission. The component 199 may also be configured to receive, from the UE and based on the configuration, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE. The component 199 may also be configured to communicate with the UE based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE. The component 199 may be configured to generate the channel auto-correlation map based at least on performing, based on the at least one channel auto-correlation measurement pilot, at least one channel auto-correlation measurement using at least one antenna pair. The component 199 may be configured to provide, for the UE, at least one channel auto-correlation value of the channel auto-correlation map, where the channel auto-correlation map is based on the at least one channel auto-correlation measurement. The component 199 may be configured to provide, for the UE, a broadcast auto-correlation measurement pilot, where a header of the broadcast auto-correlation measurement pilot includes an index indicative of a performance of at least one channel auto-correlation measurement. The component 199 may be configured to receive, from the UE, the at least one channel auto-correlation measurement, based on the broadcast auto-correlation measurement pilot, and an indication of the location information associated with the UE. The component 199 may be configured to receive, from the UE, a request message indicative of a request by the UE for at least one channel auto-correlation value of the channel auto-correlation map. The component 199 may be configured to provide, for the UE and based on the request message, a request response message indicative of the at least one channel auto-correlation value. The component 199 may be further configured to perform any of the aspects described in connection with the flowcharts in any of FIGs. 9, 10, 11, 12 and / or any of the aspects performed by a network node (e.g., a base station, gNB, another network entity, etc. ) for any of FIGs. 4-8. The component 199 may be within the network processor (s) 1512. The component 199 may be one or more hardware components specifically configured to carry out the stated processes / algorithm, implemented by one or more processors configured to perform the stated processes / algorithm, stored within a computer-readable medium for implementation by one or more processors, or some combination thereof. When multiple processors are implemented, the multiple processors may perform the stated processes / algorithm individually or in combination. The network entity 1560 may include a variety of components configured for various functions. In one configuration, the network entity 1560 may include means for configuring a UE with a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission. In the configuration, the network entity 1560 may include means for receiving, from the UE and based on the configuration, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE. In the configuration, the network entity 1560 may include means for communicating with the UE based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE. In one configuration, the network entity 1560 may include means for generating the channel auto-correlation map based at least on performing, based on the at least one channel auto-correlation measurement pilot, at least one channel auto-correlation measurement using at least one antenna pair. In one configuration, the network entity 1560 may include means for providing, for the UE, at least one channel auto-correlation value of the channel auto-correlation map, where the channel auto-correlation map is based on the at least one channel auto-correlation measurement. In one configuration, the network entity 1560 may include means for providing, for the UE, a broadcast auto-correlation measurement pilot, where a header of the broadcast auto-correlation measurement pilot includes an index indicative of a performance of at least one channel auto-correlation measurement. In one configuration, the network entity 1560 may include means for receiving, from the UE, the at least one channel auto-correlation measurement, based on the broadcast auto-correlation measurement pilot, and an indication of the location information associated with the UE. In one configuration, the network entity 1560 may include means for receiving, from the UE, a request message indicative of a request by the UE for at least one channel auto-correlation value of the channel auto-correlation map. In one configuration, the network entity 1560 may include means for providing, for the UE and based on the request message, a request response message indicative of the at least one channel auto-correlation value. The means may be the component 199 of the network entity 1560 configured to perform the functions recited by the means.
[0185] A network node and a UE in a wireless communication network may communicate in various configurations utilizing coverage maps. Coverage maps may enable various applications, such as UE positioning, route selection, remote driving, emergency vehicles services / management, etc. The communication quality statistics of coverage maps may include uplink and downlink rates per user (which may be computed, e.g., by the packet TBS and the packet decoding error rate) , packet latency, an RSSI for each Tx-Rx antenna pair, and / or the like. Channel auto-correlation may also be a factor that has impacts in wireless communications, such as channel prediction and mobile communications. Channel auto-correlation information may depend on the environment, and thus, may be related to a location, e.g., of a UE. Additionally, for vehicular communication, adaptive-rate transmission may be based on channel auto-correlation, such as for MIMO scenarios. If channel auto-correlation is known, using adaptive rate transmission may achieve data rates for MU-MIMO vehicular communications up to 10 times higher than without adaptive rate transmission, and such high data rates may be used for relevant applications, e.g., video streaming, etc. However, while channel auto-correlation information may allow adaptive-rate transmissions to enhance the performance of vehicular communication in high Doppler MIMO scenarios, radio coverage maps lack enhancements from channel auto-correlation information.
[0186] Aspects herein provide for channel auto-correlation in radio coverage maps. Channel measurements to collect auto-correlation information may be performed by network nodes (e.g., base stations, gNBs, etc. ) and / or UEs / vehicles, based on measurement pilots, for generation of channel auto-correlation maps to be utilized in communications therebetween. Crowdsourced channel auto-correlation information may be obtained by a network node from multiple UEs / vehicles. In some examples, a channel auto-correlation information / values from a channel auto-correlation map may be requested by a UE / vehicle, and a network node may provide / transmit a corresponding response message. For UE / vehicle communications, the collection of auto-correlation information in areas outside the boundary (ies) of the roadway may be excluded, and a channel auto-correlation map (s) may be stored locally near the network node or globally on a server at a different geographic location. Aspect provide for the generation of channel auto-correlation coverage maps that improve communications with high Doppler UEs, e.g., increased data rates, by collecting channel auto-correlation information and adding such information to radio coverage maps.
[0187] It is understood that the specific order or hierarchy of blocks in the processes / flowcharts disclosed is an illustration of example approaches. Based upon design preferences, it is understood that the specific order or hierarchy of blocks in the processes / flowcharts may be rearranged. Further, some blocks may be combined or omitted. The accompanying method claims present elements of the various blocks in a sample order, and are not limited to the specific order or hierarchy presented.
[0188] The previous 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 readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects. Thus, the claims are not limited to the aspects described herein, but are to be accorded the full scope consistent with the language claims. Reference to an element in the singular does not mean “one and only one” unless specifically so stated, but rather “one or more. ” Terms such as “if, ” “when, ” and “while” do not imply an immediate temporal relationship or reaction. That is, these phrases, e.g., “when, ” do not imply an immediate action in response to or during the occurrence of an action, but simply imply that if a condition is met then an action will occur, but without requiring a specific or immediate time constraint for the action to occur. The word “exemplary” is used herein to mean “serving as an example, instance, or illustration. ” Any aspect described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects. Unless specifically stated otherwise, 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, and may include multiples of A, multiples of B, or multiples of C. 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 A only, B only, C only, A and B, A and C, B and C, or A and B and C, where any such combinations may contain one or more member or members of A, B, or C. Sets should be interpreted as a set of elements where the elements number one or more. Accordingly, for a set of X, X would include one or more elements. When at least one processor is configured to perform a set of functions, the at least one processor, individually or in any combination, is configured to perform the set of functions. Accordingly, each processor of the at least one processor may be configured to perform a particular subset of the set of functions, where the subset is the full set, a proper subset of the set, or an empty subset of the set. A processor may be referred to as processor circuitry. A memory / memory module may be referred to as memory circuitry. If a first apparatus receives data from or transmits data to a second apparatus, the data may be received / transmitted directly between the first and second apparatuses, or indirectly between the first and second apparatuses through a set of apparatuses. A device configured to “output” data or “provide” data, such as a transmission, signal, or message, may transmit the data, for example with a transceiver, or may send the data to a device that transmits the data. A device configured to “obtain” data, such as a transmission, signal, or message, may receive, for example with a transceiver, or may obtain the data from a device that receives 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 known or later come to be known to those of ordinary skill in the art are expressly incorporated herein by reference and are encompassed by the claims. Moreover, nothing disclosed herein is dedicated to the public regardless of whether such disclosure is explicitly recited in the claims. The words “module, ” “mechanism, ” “element, ” “device, ” and the like may not be a substitute for the word “means. ” As such, no claim element is to be construed as a means plus function unless the element is expressly recited using the phrase “means for. ”
[0189] As used herein, the phrase “based on” shall not be construed as a reference to a closed set of information, one or more conditions, one or more factors, or the like. In other words, the phrase “based on A” (where “A” may be information, a condition, a factor, or the like) shall be construed as “based at least on A” unless specifically recited differently.
[0190] The following aspects are illustrative only and may be combined with other aspects or teachings described herein, without limitation.
[0191] Aspect 1 is a method of wireless communication at a user equipment (UE) , comprising: providing, to a network node , at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE based on a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission; and communicating with the network node based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE.
[0192] Aspect 2 is the method of aspect 1, further comprising: receiving, from the network node prior to the provision of the at least one channel auto-correlation measurement pilot, the configuration associated with the periodicity for the at least one channel auto-correlation measurement pilot transmission, wherein the configuration is indicative of an activation for providing the at least one channel auto-correlation measurement pilot.
[0193] Aspect 3 is the method of any of aspects 1 and 2, wherein the configuration is indicative of the periodicity for the at least one channel auto-correlation measurement pilot transmission being based on a time period length or a period of one or more slots, wherein the at least one channel auto-correlation measurement pilot comprises at least one demodulation reference signal (DMRS) symbol for the UE or at least one symbol having a length that is longer than a DMRS symbol for the UE.
[0194] Aspect 4 is the method of any of aspects 1 to 3, wherein the configuration is indicative of the at least one channel auto-correlation measurement pilot including multiple slots, and wherein the at least one channel auto-correlation measurement pilot includes the multiple slots.
[0195] Aspect 5 is the method of any of aspects 1 to 4, wherein the configuration is indicative of the periodicity for the at least one channel auto-correlation measurement pilot transmission being based on a distance interval traversed by the UE, wherein the distance interval traversed by the UE is based on a measurement by the UE of the distance interval, wherein providing the at least one channel auto-correlation measurement pilot includes providing a speed experienced by the UE.
[0196] Aspect 6 is the method of any of aspects 1 to 5, wherein receiving the configuration associated with the periodicity for the at least one channel auto-correlation measurement pilot transmission includes receiving the configuration based on at least one of: (i) a channel auto-correlation map update indication, (ii) an establishment of a connection with the network node by the UE, or (iii) the location information associated with the UE being associated with a selected roadway area.
[0197] Aspect 7 is the method of any of aspects 1 to 6, further comprising: receiving, from the network node, at least one channel auto-correlation value of the channel auto-correlation map, wherein the channel auto-correlation map is based on the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE.
[0198] Aspect 8 is the method of any of aspects 1 to 7, wherein the location information associated with the UE is further associated with at least one portion of an area of the channel auto-correlation map, wherein the location information associated with the UE includes at least one of a zone identifier, a Global Navigation Satellite System (GNSS) location, a segment identifier of a roadway, a lane identifier of the roadway, vehicle information associated with the UE, or a set of transmission parameters of the UE.
[0199] Aspect 9 is the method of aspect 8, wherein the location information associated with the UE excludes additional location information that corresponds to at least one area outside of a boundary of the roadway.
[0200] Aspect 10 is the method of any of aspects 1 to 9, further comprising: receiving, from the network node, a broadcast auto-correlation measurement pilot, wherein a header of the broadcast auto-correlation measurement pilot includes an index indicative of a performance of at least one channel auto-correlation measurement; performing, based on a measurement configuration, the at least one channel auto-correlation measurement based on the broadcast auto-correlation measurement pilot; and providing, to the network node, the at least one channel auto-correlation measurement and an indication of the location information associated with the UE.
[0201] Aspect 11 is the method of any of aspects 1 to 10, further comprising: providing, to the network node, a request message indicative of a request by the UE for at least one channel auto-correlation value from the channel auto-correlation map; and receiving, from the network node and based on the request message, a request response message indicative of the at least one channel auto-correlation value of the channel auto-correlation map.
[0202] Aspect 12 is the method of aspect 11, wherein the request message includes the location information associated with the UE, wherein the location information associated with the UE includes at least one of a zone identifier, a Global Navigation Satellite System (GNSS) location, a segment identifier of a roadway, or a lane identifier of the roadway, wherein the location information associated with the UE is included in at least one of a buffer status report (BSR) , a header of the request message, a first communication via a control channel, or a second communication via a unicast data channel; wherein the request response message is included in the control channel or the unicast data channel, wherein the request response message includes at least one of an index indicative of a statistical trustworthiness of the at least one channel auto-correlation value or a quantized statistical distribution of the at least one channel auto-correlation value.
[0203] Aspect 13 is the method of any of aspects 1 to 12, wherein communicating with the network node based on the channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot includes communicating with the network node based on the channel auto-correlation map and further based on adaptive rate transmissions.
[0204] Aspect 14 is the method of any of aspects 1 to 13, wherein the UE comprises a vehicle.
[0205] Aspect 15 is a method of wireless communication at a network node, comprising: configuring a user equipment (UE) with a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission; receiving, from the UE and based on the configuration, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE; and communicating with the UE based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE.
[0206] Aspect 16 is the method of aspect 15, further comprising: generating the channel auto-correlation map based at least on performing, based on the at least one channel auto-correlation measurement pilot, at least one channel auto-correlation measurement using at least one antenna pair; and providing, for the UE, at least one channel auto-correlation value of the channel auto-correlation map, wherein the channel auto-correlation map is based on the at least one channel auto-correlation measurement.
[0207] Aspect 17 is the method of any of aspects 15 and 16, wherein the configuration is indicative of the periodicity for the at least one channel auto-correlation measurement pilot transmission being based on a time period length or a period of one or more slots, wherein the at least one channel auto-correlation measurement pilot comprises at least one demodulation reference signal (DMRS) symbol for the UE or at least one symbol having a length that is longer than a DMRS symbol for the UE.
[0208] Aspect 18 is the method of any of aspects 15 to 17, wherein the configuration is indicative of the at least one channel auto-correlation measurement pilot including multiple slots, and wherein the at least one channel auto-correlation measurement pilot includes the multiple slots.
[0209] Aspect 19 is the method of any of aspects 15 to 18, wherein the configuration is indicative of the periodicity for the at least one channel auto-correlation measurement pilot transmission being based on a distance interval traversed by the UE, wherein the distance interval traversed by the UE is based on a measurement by the UE of the distance interval, wherein receiving the at least one channel auto-correlation measurement pilot includes receiving a speed experienced by the UE.
[0210] Aspect 20 is the method of any of aspects 15 to 19, wherein the location information associated with the UE is further associated with at least one portion of an area of the channel auto-correlation map, wherein the location information associated with the UE includes at least one of a zone identifier, a Global Navigation Satellite System (GNSS) location, a segment identifier of a roadway, a lane identifier of the roadway, vehicle information associated with the UE, or a set of transmission parameters of the UE.
[0211] Aspect 21 is the method of any of aspects 15 to 20, wherein configuring the UE with the configuration associated with the periodicity for the at least one channel auto-correlation measurement pilot transmission is based on at least one of: (i) a channel auto-correlation map update indication at the network node, (ii) an establishment of a connection with the network node by the UE and a random or pseudo-random selection of the UE, or (iii) the location information associated with the UE being associated with a selected roadway area.
[0212] Aspect 22 is the method of aspect 21, wherein the location information associated with the UE excludes additional location information that corresponds to at least one area outside of a boundary of a roadway.
[0213] Aspect 23 is the method of any of aspects 21 and 22, further comprising: providing, for the UE, a broadcast auto-correlation measurement pilot, wherein a header of the broadcast auto-correlation measurement pilot includes an index indicative of a performance of at least one channel auto-correlation measurement; and receiving, from the UE, the at least one channel auto-correlation measurement, based on the broadcast auto-correlation measurement pilot, and an indication of the location information associated with the UE.
[0214] Aspect 24 is the method of any of aspects 21 to 23, wherein configuring the UE with the configuration associated with the periodicity for the at least one channel auto-correlation measurement pilot transmission includes configuring at least one additional UE with the configuration associated with the periodicity for at least one additional channel auto-correlation measurement pilot via crowdsourcing; wherein receiving, from the UE and based on the configuration, the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE includes receiving, from the at least one additional UE and based on the configuration, the at least one additional channel auto-correlation measurement pilot that indicates additional channel information of the communication channel and additional location information associated with the at least one additional UE; wherein the channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE is also associated with the at least one additional channel auto-correlation measurement pilot that indicates the additional channel information of the communication channel and the additional location information associated with the at least one additional UE.
[0215] Aspect 25 is the method of any of aspects 15 to 24, further comprising: receiving, from the UE, a request message indicative of a request by the UE for at least one channel auto-correlation value of the channel auto-correlation map; and providing, for the UE and based on the request message, a request response message indicative of the at least one channel auto-correlation value.
[0216] Aspect 26 is the method of aspect 25, wherein the request message includes the location information associated with the UE, wherein the location information associated with the UE includes at least one of a zone identifier, a Global Navigation Satellite System (GNSS) location, a segment identifier of a roadway, or a lane identifier of the roadway, wherein the location information associated with the UE is included in at least one of a buffer status report (BSR) , a header of the request message, a first communication via a control channel, or a second communication via a unicast data channel; wherein the request response message is included in the control channel or the unicast data channel, wherein the request response message includes at least one of an index indicative of a statistical trustworthiness of the at least one channel auto-correlation value or a quantized statistical distribution of the at least one channel auto-correlation value.
[0217] Aspect 27 is the method of any of aspects 15 to 26, wherein communicating with the UE based on the channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot includes communicating with the UE based on the channel auto-correlation map and further based on adaptive rate transmissions.
[0218] Aspect 28 is the method of any of aspects 15 to 27, wherein the UE comprises a vehicle.
[0219] Aspect 29 is an apparatus for wireless communication at a user equipment (UE) , comprising: at least one memory; and at least one processor coupled to the at least one memory, the at least one processor, individually or in any combination, is configured to perform the method of any of aspects 1 to 14.
[0220] Aspect 30 is an apparatus for wireless communication at a user equipment (UE) , comprising means for performing each step in the method of any of aspects 1 to 14.
[0221] Aspect 31 is the apparatus of any of aspects 29 and 30, further comprising a transceiver configured to receive or to transmit in association with the method of any of aspects 1 to 14.
[0222] Aspect 32 is a computer-readable medium (e.g., a non-transitory computer-readable medium) storing computer executable code at a user equipment (UE) , the code when executed by at least one processor causes the at least one processor to perform the method of any of aspects 1 to 14.
[0223] Aspect 33 is an apparatus for wireless communication at a network entity, comprising: at least one memory; and at least one processor coupled to the at least one memory, the at least one processor, individually or in any combination, is configured to perform the method of any of aspects 15 to 28.
[0224] Aspect 34 is an apparatus for wireless communication at a network entity, comprising means for performing each step in the method of any of aspects 15 to 28.
[0225] Aspect 35 is the apparatus of any of aspects 33 and 34, further comprising a transceiver configured to receive or to transmit in association with the method of any of aspects 15 to 28.
[0226] Aspect 36 is a computer-readable medium (e.g., a non-transitory computer-readable medium) storing computer executable code at a network entity, the code when executed by at least one processor causes the at least one processor to perform the method of any of aspects 15 to 28.
Claims
1.An apparatus for wireless communication at a user equipment (UE) , comprising:at least one memory; andat least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to:provide, to a network node, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE based on a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission; andcommunicate with the network node based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE.2.The apparatus of claim 1, wherein the at least one processor, individually or in any combination, is further configured to:receive, from the network node prior to the provision of the at least one channel auto-correlation measurement pilot, the configuration associated with the periodicity for the at least one channel auto-correlation measurement pilot transmission, wherein the configuration is indicative of an activation for providing the at least one channel auto-correlation measurement pilot.3.The apparatus of claim 2, wherein the configuration is indicative of the periodicity for the at least one channel auto-correlation measurement pilot transmission being based on a time period length or a period of one or more slots, wherein the at least one channel auto-correlation measurement pilot comprises at least one demodulation reference signal (DMRS) symbol for the UE or at least one symbol having a length that is longer than a DMRS symbol for the UE.4.The apparatus of claim 2, wherein the configuration is indicative of the at least one channel auto-correlation measurement pilot including multiple slots, and wherein the at least one channel auto-correlation measurement pilot includes the multiple slots.5.The apparatus of claim 2, wherein the configuration is indicative of the periodicity for the at least one channel auto-correlation measurement pilot transmission being based on a distance interval traversed by the UE, wherein the distance interval traversed by the UE is based on a measurement by the UE of the distance interval, wherein providing the at least one channel auto-correlation measurement pilot includes providing a speed experienced by the UE.6.The apparatus of claim 2, wherein to receive the configuration associated with the periodicity for the at least one channel auto-correlation measurement pilot transmission, the at least one processor, individually or in any combination, is configured to receive the configuration based on at least one of: (i) a channel auto-correlation map update indication, (ii) an establishment of a connection with the network node by the UE, or (iii) the location information associated with the UE being associated with a selected roadway area.7.The apparatus of claim 1, wherein the at least one processor, individually or in any combination, is configured further to:receive, from the network node, at least one channel auto-correlation value of the channel auto-correlation map, wherein the channel auto-correlation map is based on the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE.8.The apparatus of claim 1, wherein the location information associated with the UE is further associated with at least one portion of an area of the channel auto-correlation map, wherein the location information associated with the UE includes at least one of a zone identifier, a Global Navigation Satellite System (GNSS) location, a segment identifier of a roadway, a lane identifier of the roadway, vehicle information associated with the UE, or a set of transmission parameters of the UE.9.The apparatus of claim 8, wherein the location information associated with the UE excludes additional location information that corresponds to at least one area outside of a boundary of the roadway.10.The apparatus of claim 1, wherein the at least one processor, individually or in any combination, is further configured to:receive, from the network node, a broadcast auto-correlation measurement pilot, wherein a header of the broadcast auto-correlation measurement pilot includes an index indicative of a performance of at least one channel auto-correlation measurement;perform, based on a measurement configuration, the at least one channel auto-correlation measurement based on the broadcast auto-correlation measurement pilot; andprovide, to the network node, the at least one channel auto-correlation measurement and an indication of the location information associated with the UE.11.The apparatus of claim 1, wherein the at least one processor, individually or in any combination, is further configured to:provide, to the network node, a request message indicative of a request by the UE for at least one channel auto-correlation value from the channel auto-correlation map; andreceive, from the network node and based on the request message, a request response message indicative of the at least one channel auto-correlation value of the channel auto-correlation map.12.The apparatus of claim 11, wherein the request message includes the location information associated with the UE, wherein the location information associated with the UE includes at least one of a zone identifier, a Global Navigation Satellite System (GNSS) location, a segment identifier of a roadway, or a lane identifier of the roadway, wherein the location information associated with the UE is included in at least one of a buffer status report (BSR) , a header of the request message, a first communication via a control channel, or a second communication via a unicast data channel;wherein the request response message is included in the control channel or the unicast data channel, wherein the request response message includes at least one of an index indicative of a statistical trustworthiness of the at least one channel auto-correlation value or a quantized statistical distribution of the at least one channel auto-correlation value.13.The apparatus of claim 1, further comprising a transceiver coupled to the at least one processor, wherein to communicate with the network node based on the channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot, the at least one processor, individually or in any combination, is configured to communicate with the network node, via the transceiver, based on the channel auto-correlation map and further based on adaptive rate transmissions.14.The apparatus of claim 1, wherein the UE comprises a vehicle.15.An apparatus for wireless communication at a network node, comprising:at least one memory; andat least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to:configure a user equipment (UE) with a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission;receive, from the UE and based on the configuration, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE; andcommunicate with the UE based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE.16.The apparatus of claim 15, wherein the at least one processor, individually or in any combination, is further configured to:generate the channel auto-correlation map based at least on performing, based on the at least one channel auto-correlation measurement pilot, at least one channel auto-correlation measurement using at least one antenna pair; andprovide, for the UE, at least one channel auto-correlation value of the channel auto-correlation map, wherein the channel auto-correlation map is based on the at least one channel auto-correlation measurement.17.The apparatus of claim 15, wherein the configuration is indicative of the periodicity for the at least one channel auto-correlation measurement pilot transmission being based on a time period length or a period of one or more slots, wherein the at least one channel auto-correlation measurement pilot comprises at least one demodulation reference signal (DMRS) symbol for the UE or at least one symbol having a length that is longer than a DMRS symbol for the UE.18.The apparatus of claim 15, wherein the configuration is indicative of the at least one channel auto-correlation measurement pilot including multiple slots, and wherein the at least one channel auto-correlation measurement pilot includes the multiple slots.19.The apparatus of claim 15, wherein the configuration is indicative of the periodicity for the at least one channel auto-correlation measurement pilot transmission being based on a distance interval traversed by the UE, wherein the distance interval traversed by the UE is based on a measurement by the UE of the distance interval, wherein receiving the at least one channel auto-correlation measurement pilot includes receiving a speed experienced by the UE.20.The apparatus of claim 15, wherein the location information associated with the UE is further associated with at least one portion of an area of the channel auto-correlation map, wherein the location information associated with the UE includes at least one of a zone identifier, a Global Navigation Satellite System (GNSS) location, a segment identifier of a roadway, a lane identifier of the roadway, vehicle information associated with the UE, or a set of transmission parameters of the UE.21.The apparatus of claim 15, wherein the configuration associated with the periodicity for the at least one channel auto-correlation measurement pilot transmission, the at least one processor, individually or in any combination, is configured to is based on at least one of: (i) a channel auto-correlation map update indication at the network node, (ii) an establishment of a connection with the network node by the UE and a random or pseudo-random selection of the UE, or (iii) the location information associated with the UE being associated with a selected roadway area.22.The apparatus of claim 21, wherein the location information associated with the UE excludes additional location information that corresponds to at least one area outside of a boundary of a roadway.23.The apparatus of claim 21, wherein the at least one processor, individually or in any combination, is further configured to:provide, for the UE, a broadcast auto-correlation measurement pilot, wherein a header of the broadcast auto-correlation measurement pilot includes an index indicative of a performance of at least one channel auto-correlation measurement; andreceive, from the UE, the at least one channel auto-correlation measurement, based on the broadcast auto-correlation measurement pilot, and an indication of the location information associated with the UE.24.The apparatus of claim 21, wherein to configure the UE with the configuration associated with the periodicity for the at least one channel auto-correlation measurement pilot transmission, the at least one processor, individually or in any combination, is configured to configure at least one additional UE with the configuration associated with the periodicity for at least one additional channel auto-correlation measurement pilot via crowdsourcing;wherein to receive, from the UE and based on the configuration, the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE, the at least one processor, individually or in any combination, is configured to receive, from the at least one additional UE and based on the configuration, the at least one additional channel auto-correlation measurement pilot that indicates additional channel information of the communication channel and additional location information associated with the at least one additional UE;wherein the channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE is also associated with the at least one additional channel auto-correlation measurement pilot that indicates the additional channel information of the communication channel and the additional location information associated with the at least one additional UE.25.The apparatus of claim 15, wherein the at least one processor, individually or in any combination, is further configured to:receive, from the UE, a request message indicative of a request by the UE for at least one channel auto-correlation value of the channel auto-correlation map; andprovide, for the UE and based on the request message, a request response message indicative of the at least one channel auto-correlation value.26.The apparatus of claim 25, wherein the request message includes the location information associated with the UE, wherein the location information associated with the UE includes at least one of a zone identifier, a Global Navigation Satellite System (GNSS) location, a segment identifier of a roadway, or a lane identifier of the roadway, wherein the location information associated with the UE is included in at least one of a buffer status report (BSR) , a header of the request message, a first communication via a control channel, or a second communication via a unicast data channel;wherein the request response message is included in the control channel or the unicast data channel, wherein the request response message includes at least one of an index indicative of a statistical trustworthiness of the at least one channel auto-correlation value or a quantized statistical distribution of the at least one channel auto-correlation value.27.The apparatus of claim 15, further comprising a transceiver coupled to the at least one processor, wherein to communicate with the UE based on the channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot, the at least one processor, individually or in any combination, is configured to communicate with the UE, via the transceiver, based on the channel auto-correlation map and further based on adaptive rate transmissions.28.The apparatus of claim 15, wherein the UE comprises a vehicle.29.A method of wireless communication at a user equipment (UE) , comprising:providing, to a network node, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE based on a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission; and communicating with the network node based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE.30.A method of wireless communication at a network node, comprising:configuring a user equipment (UE) with a configuration associated with a periodicity for at least one channel auto-correlation measurement pilot transmission;receiving, from the UE and based on the configuration, at least one channel auto-correlation measurement pilot that indicates channel information of a communication channel and location information associated with the UE; andcommunicating with the UE based on a channel auto-correlation map associated with the at least one channel auto-correlation measurement pilot that indicates the channel information of the communication channel and the location information associated with the UE.
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