Methods, apparatuses, and media for adapting radar transmissions based on congestion levels

Abstract

The present disclosure provides systems, devices, apparatuses, and methods for adapting radar transmissions based on a congestion level, including computer programs encoded on storage media. A wireless device, such as a radar device, UE, base station, vehicle, and / or the like can detect a congestion level of a wireless communication environment including the wireless device. The wireless device can have at least one of a first FOV or a first range within the wireless communication environment. The wireless device can transmit a radar signal corresponding to the wireless device having at least one of a second FOV or a second range in the wireless communication environment based on the congestion level exceeding a threshold, the at least one of the second FOV or the second range being less than the at least one of the first FOV or the first range.

Description

[0001] Cross-reference of related applications

[0002] This application claims the benefit and priority of U.S. Provisional Application Serial No. 63 / 081,837, filed September 22, 2020, entitled “Adapting a Radar Transmission based on a Congestion Level,” and U.S. Patent Application No. 17 / 476,448, filed September 15, 2021, entitled “ADAPTING A RADAR TRANSMISSION BASED ON A CONGESTION LEVEL,” both of which are expressly incorporated herein by reference in their entirety. Technical Field

[0003] This disclosure generally relates to radar equipment, and more specifically, to the adjustment of radar transmissions. Background Technology

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunications services, such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies that enable 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.

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

[0006] The following provides a brief overview of one or more aspects to offer a basic understanding of them. This overview is not a comprehensive summary of all anticipated aspects, nor is it intended to identify key or important elements of all aspects, nor to describe 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 descriptions that follow.

[0007] In one aspect of this disclosure, a method for wireless communication at a wireless device is provided. The method may include: detecting a congestion level in a wireless communication environment including the wireless device, the wireless device having at least one of a first field of view (FOV) or a first range within the wireless communication environment; and, based on the congestion level exceeding a threshold, transmitting a radar signal corresponding to the wireless device having at least one of a second FOV or a second range in the wireless communication environment, the second FOV or the second range being smaller than the first FOV or the first range.

[0008] In another aspect of this disclosure, an apparatus for wireless communication at a wireless device is provided. The apparatus includes a memory and at least one processor coupled to the memory, the memory and the at least one processor being configured to: detect a congestion level in a wireless communication environment including the wireless device, the wireless device having at least one of a first field of view (FOV) or a first ranging distance within the wireless communication environment; and, based on the congestion level exceeding a threshold, transmit a radar signal corresponding to the wireless device having at least one of a second FOV or a second ranging distance in the wireless communication environment, the second FOV or the second ranging distance being less than the first FOV or the first ranging distance.

[0009] In another aspect of this disclosure, an apparatus for wireless communication at a wireless device is provided. The apparatus may include: a unit for detecting a congestion level in a wireless communication environment including the wireless device, the wireless device having at least one of a first field of view (FOV) or a first ranging within the wireless communication environment; and a unit for transmitting a radar signal corresponding to the wireless device having at least one of a second FOV or a second ranging in the wireless communication environment, based on the congestion level exceeding a threshold, wherein the second FOV or the at least one of the second ranging is less than the first FOV or the at least one of the first ranging.

[0010] In another aspect of this disclosure, a computer-readable medium is provided for storing computer-executable code for wireless communication at a wireless device. For example, the computer-readable medium may be non-transitory. When executed by a processor, the code causes the processor to: detect a congestion level in a wireless communication environment including the wireless device, the wireless device having at least one of a first field of view (FOV) or a first ranging within the wireless communication environment; and, based on the congestion level exceeding a threshold, transmit a radar signal corresponding to the wireless device having at least one of a second FOV or a second ranging in the wireless communication environment, the second FOV or the second ranging being less than the first FOV or the first ranging.

[0011] In one aspect of this disclosure, a method for wireless communication at a wireless device is provided. The method may include: measuring a congestion level of a wireless communication environment including a first wireless device, the first wireless device having at least one of a first field of view (FOV) or a first ranging within the wireless communication environment; and sending a message to the first wireless device based on the congestion level, the message being associated with the first wireless device having at least one of a second FOV or a second ranging within the wireless communication environment, the second FOV or the second ranging being less than the first FOV or the first ranging.

[0012] In another aspect of this disclosure, an apparatus for wireless communication at a wireless device is provided. The apparatus includes a memory and at least one processor coupled to the memory, the memory and the at least one processor being configured to: measure a congestion level of a wireless communication environment including a first wireless device, the first wireless device having at least one of a first field of view (FOV) or a first ranging within the wireless communication environment; and send a message to the first wireless device based on the congestion level, the message being associated with the first wireless device having at least one of a second FOV or a second ranging within the wireless communication environment, the second FOV or the second ranging being less than the first FOV or the first ranging.

[0013] In another aspect of this disclosure, an apparatus for wireless communication at a wireless device is provided. The apparatus may include: a unit for measuring a congestion level in a wireless communication environment including a first wireless device, the first wireless device having at least one of a first field of view (FOV) or a first ranging within the wireless communication environment; and a unit for sending a message to the first wireless device based on the congestion level, the message being associated with the first wireless device having at least one of a second FOV or a second ranging within the wireless communication environment, the second FOV or the second ranging being less than the first FOV or the first ranging.

[0014] In another aspect of this disclosure, a computer-readable medium is provided for storing computer-executable code for wireless communication at a wireless device. For example, the computer-readable medium may be non-transitory. When executed by a processor, the code causes the processor to: measure a congestion level in a wireless communication environment including a first wireless device, the first wireless device having at least one of a first field of view (FOV) or a first distance within the wireless communication environment; and send a message to the first wireless device based on the congestion level, the message being associated with the first wireless device having at least one of a second FOV or a second distance in the wireless communication environment, the second FOV or the second distance being less than the first FOV or the first distance.

[0015] To achieve the foregoing and related objectives, the one or more aspects include the features fully described below and specifically pointed out in the claims. Certain illustrative features of the one or more aspects are set forth in detail in the following description and drawings. However, these features indicate only a few of the various ways in which the principles of the aspects can be employed, and this description is intended to include all such aspects and their equivalents. Attached Figure Description

[0016] Figure 1 This is a schematic diagram illustrating an example of radar equipment and a wireless communication system.

[0017] Figure 2 This is a schematic diagram showing radar signals transmitted by a vehicle and reflected from the target and false targets.

[0018] Figure 3 This is a schematic diagram showing the radar's transmitted and returned signals.

[0019] Figure 4 This is a schematic diagram illustrating an example of a wireless device capable of sensing radar signals.

[0020] Figures 5A-5B An example ranging spectrum is shown.

[0021] Figure 6 An example of reducing the maximum range of a radar is shown.

[0022] Figures 7A-7B Example diagrams are shown corresponding to different ranging methods with the radar's field of view.

[0023] Figure 8 This is a flowchart of a wireless communication method at a wireless device, based on an example.

[0024] Figure 9 This is a flowchart of a wireless communication method at a wireless device, based on an example.

[0025] Figure 10 This is a flowchart of a wireless communication method at a second wireless device, based on an example.

[0026] Figure 11 This is a flowchart of a wireless communication method at a wireless device, based on an example.

[0027] Figure 12 This is a schematic diagram illustrating an example of a hardware implementation for an example device. Detailed Implementation

[0028] The specific embodiments described below with reference to the accompanying drawings are intended as descriptions of various configurations and are not intended to represent the only configuration in which the concepts described herein can be practiced. Specific details are included in the specific embodiments for the purpose of providing a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring these concepts.

[0029] Several aspects of a telecommunications system will now be described with reference to various apparatuses and methods. These apparatuses and methods will be described in the following detailed embodiments and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively, “elements”). These elements can be implemented using electronic hardware, computer software, or any combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the system as a whole.

[0030] As an example, an element, or any part of an element, or any combination of elements, can be implemented as a "processing system" including one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, system-on-a-chip (SoCs), 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 functions described throughout this disclosure. One or more processors in a processing system can execute software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other terms, software should be interpreted broadly as meaning instructions, instruction sets, code, code segments, program code, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc.

[0031] Therefore, in one or more exemplary examples, the described functionality can be implemented in hardware, software, or any combination thereof. If implemented in software, the functionality can be stored or encoded as one or more instructions or code on a computer-readable medium. A computer-readable medium includes a computer storage medium. The storage medium can be any available medium accessible to a computer. By way of example and not limitation, such a computer-readable medium can include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of computer-readable media of the foregoing types, or any other medium that can be used to store computer-executable code in the form of instructions or data structures accessible to a computer.

[0032] While aspects and implementations have been described herein through the illustration of some examples, those skilled in the art will understand that other implementations and use cases can be implemented in many different arrangements and scenarios. The aspects described herein can be implemented across many different platform types, devices, systems, shapes, sizes, and package arrangements. For example, implementations and / or uses can be implemented through integrated chip implementations and other devices based on non-modular components (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 specific to a particular use case or application, a wide variety of applicability to the described aspects is possible. Implementations can range from chip-level or modular components to non-modular, non-chip-level implementations, and further to aggregated, distributed, or original equipment manufacturer (OEM) devices or systems that incorporate one or more of the described aspects. In some practical settings, devices incorporating the described aspects and features may also include additional components and features for implementing and practicing the declared and described aspects. For example, the transmission and reception of wireless signals must involve multiple components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders / summers, etc.). The aspects described herein are intended to be implemented in a wide variety of devices, chip-level components, systems, distributed arrangements, aggregated or deaggregated components, end-user equipment, etc., of different sizes, shapes, and constructions.

[0033] Ranging radar can be integrated into devices or equipment used to perform collision avoidance and other related sensing technologies. As an example, ranging radar can be provided in vehicles, industrial equipment, environmental sensing devices, and so on. The radar can be configured to transmit radar signals / pulses and receive a return signal based on the reflection of the radar signal from an object / target. The radar device can determine the time delay between the transmission of the radar signal and the reception of the return signal in order to calculate the distance between the radar device and one or more physical objects reflecting the return signal. In some respects, the physical object reflecting the radar signal can be referred to as a target. In some cases, the radar device may detect an erroneous target based on the received signal not being an accurate reflection of the radar signal from the target, or may incorrectly detect the target's location. Such interference can interfere with the radar signal and may at least partially obscure the target from accurate detection by the radar device. For example, the radar device may receive a signal that is not a reflection of its own signal and has a shortened distance / time offset and increased power compared to the actual reflection of the radar signal. If the radar device assumes that the signal is a reflection of its own signal, it will incorrectly detect the target. An erroneous target can refer to the radar device's inaccurate detection of the target.

[0034] In some examples, multiple devices in an area may operate ranging radars or may transmit other sensing signals. As an example, other sensing devices may perform similar object detection based on the transmission and reflection of signals similar in type to radar signals. These other sensing devices may use signals that are at least slightly different from radar signals. The transmission of multiple radar signals or other signals from other sensing devices near the radar device may increase interference with accurate radar detection at the radar device. Each sensing device or radar device may transmit signals independently, for example, without coordinated control. The radar device may receive return signals (e.g., reflected signals) based on its own signals, and / or may receive different signals as interference from different radar devices or different sensing devices. The reception of interfering signals may lead to inaccurate radar detection at the radar device. For example, when multiple radar sources operate within a specific range of the radar device, these other radar sources may interfere with the radar device's reception and object determination.

[0035] This paper presents a radar device for adjusting radar transmission or detection parameters based on a current congestion level. In one or more aspects, the radar / device may determine the congestion level based on the content and quantity of messages received by the radar (e.g., via a Uu link or sidelink), or based on interference determined by the radar device according to false peaks or increased background noise on the ranging spectrum associated with the radar image at the radar device. "Congestion" refers to interference to / from the radar device caused by one or more other radar signals in the wireless communication environment. "Congestion level" refers to the amount of one or more spurious radar signals generating interference in the wireless communication environment. In one example, the radar may determine the congestion level within its range based on the number of detected devices and / or the amount of signals detected by the radar. The range may refer to the area surrounding the radar or the distance to the radar. According to one or more aspects, if the congestion level exceeds a threshold, the radar may reduce the sweeping-up time (T0). up It also provides a greater discontinuous transmission (DTX) time between radar pulses to reduce the radar's maximum detection range.

[0036] In one example, a radar device can reduce its transmit power to decrease its maximum detection range. By reducing the radar's maximum detection range, closer objects can be prioritized for detection without affecting the radar device's ability to detect the velocity and / or direction of these closer objects. In another example, the radar's range can be reduced to decrease interference with the radar. Reducing the radar's range can also reduce interference to other devices in the wireless communication environment (e.g., other devices near the radar). While objects at a greater physical distance can still be detected in some cases, the radar device can be configured to reduce the priority of detecting more distant objects or not prioritize detecting more distant objects as the congestion level of the radar signal in the current environment increases. For example, as the congestion level increases, the radar device can prioritize detecting objects closer to the radar device (e.g., those at a closer physical distance). Adjusting the radar signal based on the congestion level in the surrounding area (e.g., reducing transmit power and / or decreasing detection range) allows the radar device to reduce potential interference to other nearby devices. Since the adjustment is based on the congestion level, transmit power and / or detection range can be increased when there is a lower congestion level and a lower probability of interference.

[0037] Figure 1This is a schematic diagram 100 illustrating an example of a wireless communication system and access network in which base station 102 or 180 can wirelessly communicate with user equipment (UE) 104 (such as roadside unit (RSU) 117 or other devices that can transmit / receive side-link communication). Some wireless devices can perform radar signal sensing. For example, radar device 103 can transmit a wireless signal 105 and use information about that signal to image the environment, or determine information about a target 107 based on ranging, Doppler, and / or angular information determined from the wireless signal. The signal may include defined waveforms such as frequency modulated continuous wave (FMCW), pulse waveforms, or chirped waveforms, and other examples of defined waveforms.

[0038] In some examples, radar device 103 may transmit radar signals to determine information about a target or environment. Radar signal sensing component 198 in radar device 103 may transmit radar signals. Radar signal sensing component 198 may be configured to: detect a congestion level in a wireless communication environment including a wireless device having at least one of a first field of view (FOV) or a first ranging in the wireless communication environment; and, based on the congestion level exceeding a threshold, transmit a radar signal corresponding to at least one of a second FOV or a second ranging in the wireless communication environment, wherein the second FOV or the second ranging is smaller than the first FOV or the first ranging. Figure 7A and 7B Example aspects of radar signal transmission associated with different FOVs are illustrated. In some aspects, UE 104 may include a congestion indicator component 199 configured to: measure the congestion level of a wireless communication environment including a first wireless device having at least one of a first FOV or a first ranging in the wireless communication environment; and send a message to the first wireless device based on the congestion level, the message corresponding to the first wireless device having at least one of a second FOV or a second ranging in the wireless communication environment, the second FOV or the second ranging being smaller than the first FOV or the first ranging.

[0039] Radar device 103 can compare received signals with transmitted signals to determine information about target 107 or the environment. Radar signal sensing can be used in automotive radar, for example, to detect the environment around a vehicle, nearby vehicles or objects, for detection information in smart cruise control, collision avoidance, etc. Radar signal sensing can be used for gesture recognition, such as human activity recognition, hand movement recognition, facial expression recognition, keystroke detection, sign language detection, etc. Radar signal sensing can be used to acquire contextual information, such as position detection, tracking, orientation determination, range estimation, etc. Radar signal sensing can be used to image the environment, for example, to provide three-dimensional (3D) maps for virtual reality (VR) applications. Radar devices can be used to provide high-resolution positioning, for example, for industrial Internet of Things (IIoT) applications. In some examples, radar device 103 can provide advanced detection capabilities for consumer-grade radar. Radar signal sensing can provide touchless or device-free interaction with devices or systems. For example, a wireless device can detect user gestures to trigger an operation at the wireless device.

[0040] In some examples, radar signal sensing can be based on a wireless communication system (such as...) for signal 105. Figure 1 The wireless communication system shown overlaps with the frequency range. Radar device 103 can use the waveform of signal 105 associated with the communication system. As a non-limiting example, radar signal sensing can be based on signals in the mmW frequency range, such as frequency range 2 (FR2), frequency range 2x (FR2x), and / or frequency range 4 (FR4) signals, which can provide improved ranging for radar signal detection. In some examples, radar device 103 can have the capability to perform both radar signal sensing and wireless communication. In some examples, radar device 103 can be... Figure 1 The radar device 103 is a component of the UE 104, base station 102 or 180, or other access point in the communication system. In some examples, the radar device 103 may be a wireless communication device that supports radar transmission and detection (e.g., UE 104, base station 102 / 180, or other access point). In other examples, the radar device 103 may perform radar signal transmission and sensing without wireless communication capabilities. Figure 1 As shown, radar device 103 can use a directional beam to transmit radar signal 105. For example, radar device 103 can transmit radar signal in a specific direction relative to the radar device. Radar device 103 can be within or outside the coverage area 110 of base station 102 or 180.

[0041] Figure 1The wireless communication system shown (also known as a wireless wide area network (WWAN)) includes base station 102, UE 104, evolved packet core (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)). Base station 102 may include macro cells (high-power cellular base stations) and / or small cells (low-power cellular base stations). Macro cells include base stations. Small cells include femtocells, picocells, and microcells.

[0042] Base station 102 configured for 4G LTE (collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interface with EPC 160 via a first backhaul link 132 (e.g., S1 interface). Base station 102 configured for 5G NR (collectively referred to as Next Generation RAN (NG-RAN)) can interface with core network 190 via a second backhaul link 184. Among other functions, base station 102 can also perform one or more of the following functions: user data delivery, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), user and equipment tracking, RAN information management (RIM), paging, location, and delivery of warning messages. Base station 102 can communicate directly or indirectly with each other (e.g., via EPC 160 or core network 190) via third backhaul link 134 (e.g., X2 interface). First backhaul link 132, second backhaul link (e.g., Xn interface) and third backhaul link 134 can be wired or wireless.

[0043] In some respects, base station 102 or 180 may be referred to as a RAN and may include aggregation components or deaggregation components. As an example of a deaggregation RAN, the base station may include a central unit (CU) 106, one or more distributed units (DU) 115, and / or one or more remote units (RU) 119, such as... Figure 1As shown. A de-aggregated RAN can be achieved by partitioning between RU 119 and aggregated CU / DU. A de-aggregated RAN can be achieved by partitioning between CU 106, DU 115, and RU 119. A de-aggregated RAN can be achieved by partitioning between CU 106 and aggregated DU / RU. CU 106 and one or more DU 115 can be connected via F1 interfaces. DU 115 and RU 119 can be connected via fronthaul interfaces. The connection between CU 106 and DU 115 can be referred to as midhaul, and the connection between DU 115 and RU 119 can be referred to as fronthaul. The connection between CU 106 and the core network can be referred to as backhaul. The RAN can be based on functional partitioning between the various components of the RAN (e.g., between CU 106, DU 115, or RU 119). CU 106 can be configured to execute one or more aspects of a wireless communication protocol, such as processing one or more layers of a protocol stack, and DU 115 can be configured to process other aspects of the wireless communication protocol, such as other layers of the protocol stack. In different implementations, the division between layers processed by CU 106 and layers processed by DU 115 can occur at different layers of the protocol stack. As a non-limiting example, DU 115 can be provided as a logical node for accommodating the Radio Link Control (RLC) layer, the Media Access Control (MAC) layer, and at least a portion of the Physical (PHY) layer based on functional partitioning. RU 119 can be provided as a logical node configured to accommodate at least a portion of the PHY layer and radio frequency (RF) processing. CU 106 can accommodate higher-level functions, such as the Serving Data Adaptation Protocol (SDAP) layer and the Packet Data Convergence Protocol (PDCP) layer, for example, above the RLC layer. In other implementations, the partitioning between layer functions provided by the CU, DU, or RU can be different.

[0044] The access network may include one or more Integrated Access and Backhaul (IAB) nodes 111, which exchange wireless communications with UE 104 or other IAB nodes 111 to provide access and backhaul to the core network. In an IAB network with multiple IAB nodes, the anchor node may be referred to as an IAB donor. The IAB donor may be a base station 102 or 180, which provides access to the core network 190 or EPC 160 and / or control over one or more IAB nodes 111. The IAB donor may include CU 106 and DU 115. IAB node 111 may include DU 115 and a mobile terminal (MT). DU 115 of IAB node 111 may operate as a parent node, and the MT may operate as a child node.

[0045] Base station 102 can wirelessly communicate with UE 104. Each of base stations 102 can provide communication coverage for a corresponding geographic coverage area 110. Overlapping geographic coverage areas 110 may exist. For example, small cell 102' may have a coverage area 110' that overlaps with the coverage areas 110 of one or more macro base stations 102. A network that includes both small cells and macro cells can be referred to as a heterogeneous network. The heterogeneous network may also include evolved home node B (eNB) (HeNB), which can provide services to restricted groups referred to as closed subscriber groups (CSG). The communication link 120 between base station 102 and UE 104 may include uplink (UL) (also known as reverse link) transmission from UE 104 to base station 102 and / or downlink (DL) (also known as forward link) transmission from base station 102 to UE 104. The communication link 120 may use multiple-input multiple-output (MIMO) antenna technologies, including spatial multiplexing, beamforming, and / or transmit diversity. The communication link may use one or more carriers. Base station 102 / UE 104 can use a total of up to [number] for transmission in each direction. Yx MHz ( x In carrier aggregation (of component carriers), each carrier allocated up to [number] carriers can [number] times. Y A spectrum with a bandwidth of MHz (e.g., 5, 10, 15, 20, 100, 400 MHz, etc.). Carriers may be adjacent to each other or not. Carrier allocation relative to DL and UL can be asymmetrical (e.g., more or fewer carriers may be allocated to DL than to UL). Component carriers may include primary component carriers and one or more secondary component carriers. The primary component carrier may be referred to as the primary cell (PCell), and the secondary component carrier may be referred to as the secondary cell (SCell).

[0046] A specific UE 104 can communicate with each other using a device-to-device (D2D) communication link 158. The D2D communication link 158 can use DL / UL WWAN spectrum. The D2D communication link 158 can use one or more sideline channels, such as the Physical Sideline Broadcast Channel (PSBCH), Physical Sideline Discovery Channel (PSDCH), Physical Sideline Shared Channel (PSSCH), and Physical Sideline Control Channel (PSCCH). D2D communication can be conducted through various wireless D2D communication systems, such as WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE 802.11 standard, LTE, or NR.

[0047] Examples of sidelink communication may include vehicle-based communication devices that can communicate and / or communicate with other devices via vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I) (e.g., from a vehicle-based communication device to a road infrastructure node such as RSU 117), vehicle-to-network (V2N) (e.g., from a vehicle-based communication device to one or more network nodes such as a base station), vehicle-to-pedestrian (V2P), cellular vehicle-to-everything (C-V2X), and / or combinations thereof, collectively referred to as vehicle-to-everything (V2X) communication. Sidelink communication can be based on V2X or other D2D communication, such as Proximity Services (ProSe), etc. Besides the UE, sidelink communication can also be sent and received by other sending and receiving devices (such as RSU 117, etc.). In some examples, the PC5 interface can be used to exchange sidelink communication.

[0048] The wireless communication system may also include a Wi-Fi access point (AP) 150 that communicates with a Wi-Fi station (STA) 152 via a communication link 154 (e.g., in an unlicensed spectrum such as 5 GHz). When communicating in unlicensed spectrum, the STA 152 / AP 150 may perform a free channel assessment (CCA) before communication to determine whether the channel is available.

[0049] Small cell 102' can operate in licensed and / or unlicensed spectrum. When operating in unlicensed spectrum, small cell 102' can employ NR and use the same unlicensed spectrum (e.g., 5 GHz, etc.) as the Wi-Fi AP 150. Small cell 102' employing NR in unlicensed spectrum can improve coverage of the access network and / or increase the capacity of the access network.

[0050] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc., based on frequency / wavelength. In 5G NR, two initial operating bands have been designated as frequency range names FR1 (410 MHz — 7.125 GHz) and FR2 (24.25 GHz — 52.6 GHz). The frequencies between FR1 and FR2 are generally referred to as the intermediate frequency band. Although a portion of FR1 is greater than 6 GHz, in various documents and articles, FR1 is often referred to as the (interchangeably) "sub-6 GHz" band. Similar naming issues sometimes arise regarding FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, although this differs from the extremely high frequency (EHF) band (30 GHz – 300 GHz) designated as "millimeter wave" by the International Telecommunication Union (ITU).

[0051] The frequencies between FR1 and FR2 are generally referred to as intermediate frequency (IF) bands. Recent 5G NR research has designated the operating bands of these IF bands as the frequency range name FR3 (7.125 GHz — 24.25 GHz). Bands falling within FR3 can inherit FR1 and / or FR2 characteristics, and thus can effectively extend the features of FR1 and / or FR2 into the IF band frequencies. Furthermore, higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz. For example, three higher operating bands have been designated as the frequency range names FR4-a or FR4-1 (52.6 GHz — 71 GHz), FR4 (52.6 GHz — 114.25 GHz), and FR5 (114.25 GHz — 300 GHz). Each of these higher frequency bands falls within the EHF band.

[0052] In light of the foregoing, unless otherwise specifically stated, it should be understood that the term "sub-6 GHz" etc. (if used herein) can broadly refer to frequencies that may be less than 6 GHz, frequencies that may be within FR1, or frequencies that may include intermediate frequency band frequencies. Furthermore, unless otherwise specifically stated, it should be understood that the term "millimeter wave" etc. (if used herein) can broadly refer to frequencies that may include intermediate frequency band frequencies, frequencies that may be within FR2, FR4, FR4-a or FR4-1 and / or FR5, or frequencies that may be within the EHF band.

[0053] Base station 102 (whether a small cell 102' or a large cell (e.g., a macro base station)) may include and / or be referred to as an eNB, gNodeB (gNB), or another type of base station. Some base stations 180 (such as gNBs) may operate in conventional sub-6 GHz spectrum, millimeter wave frequencies, and / or near-millimeter wave frequencies in communication with UE 104. When a gNB operates in millimeter wave or near-millimeter wave frequencies, it may be referred to as a millimeter wave base station. Millimeter wave base station 180 may utilize beamforming 182 with UE 104 to compensate for path loss and short ranging. Base station 180 and UE 104 may each include multiple antennas (such as antenna elements, antenna panels, and / or antenna arrays) to facilitate beamforming.

[0054] Base station 180 may transmit beamforming signals to UE 104 in one or more transmit directions 182'. UE 104 may receive beamforming signals from base station 180 in one or more receive directions 182''. UE 104 may also transmit beamforming signals to base station 180 in one or more transmit directions. Base station 180 may receive beamforming signals from UE 104 in one or more receive directions. Base station 180 / UE 104 may perform beamforming training to determine the optimal receive direction and optimal transmit direction for each of base station 180 / UE 104. The transmit direction and receive direction of base station 180 may be the same or different. The transmit direction and receive direction of UE 104 may be the same or different.

[0055] EPC 160 may include Mobility Management Entity (MME) 162, other MMEs 164, Serving Gateway 166, Multimedia Broadcast Multicast Service (MBMS) Gateway 168, Broadcast Multicast Service Center (BM-SC) 170, and Packet Data Network (PDN) Gateway 172. MME 162 can communicate with Home Subscriber Server (HSS) 174. MME 162 is the control node that handles signaling between UE 104 and EPC 160. Typically, MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are delivered through Serving Gateway 166, which is itself connected to PDN Gateway 172. PDN Gateway 172 provides UE IP address allocation and other functions. PDN Gateway 172 and BM-SC 170 are connected to IP Service 176. IP Service 176 may include the Internet, intranet, IP Multimedia Subsystem (IMS), PS streaming service, and / or other IP services. The BM-SC 170 provides functionality for MBMS user service provisioning and delivery. It can serve as an entry point for content provider MBMS transmissions, authorize and initiate MBMS bearer services within a Public Land Mobile Network (PLMN), and schedule MBMS transmissions. The MBMS gateway 168 can distribute MBMS services to base stations 102 belonging to Multicast-Broadcast Single Frequency Network (MBSFN) areas belonging to broadcast-specific services, and can be responsible for session management (start / stop) and collecting billing information related to eMBMS.

[0056] The core network 190 may include Access and Mobility Management Functions (AMF) 192, other AMFs 193, Session Management Functions (SMF) 194, and User Plane Functions (UPF) 195. AMF 192 may communicate with Unified Data Management (UDM) 196. AMF 192 is the control node that handles signaling between UE 104 and the core network 190. Typically, AMF 192 provides QoS flow and session management. All user Internet Protocol (IP) packets are transmitted through UPF 195. UPF 195 provides UE IP address allocation and other functions. UPF 195 connects to IP services 197. IP services 197 may include the Internet, intranets, IP Multimedia Subsystem (IMS), Packet Switched (PS) Streaming (PSS) services, and / or other IP services.

[0057] Base stations may include and / or be referred to as gNB, Node B, eNB, access point, base transceiver station, radio base station, radio transceiver, transceiver function, Basic Services Set (BSS), Extended Services Set (ESS), Transmitter Receiver Point (TRP), or some other suitable term. Base station 102 provides UE 104 with access to EPC 160 or core network 190. Examples of UE 104 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, GPS devices, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablets, smart devices, wearable devices, vehicles, meters, air pumps, large or small kitchen appliances, healthcare devices, implants, sensors / actuators, displays, or any other similarly functional devices. Some UE 104 devices may be referred to as IoT devices (e.g., parking timers, air pumps, toasters, vehicles, heart monitors, etc.). UE 104 may also be referred to as a station, mobile station, user station, mobile unit, user unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile user station, access terminal, mobile terminal, radio terminal, remote terminal, mobile phone, user agent, mobile client, client, or any other suitable term.

[0058] Figure 2This is a schematic diagram 200 illustrating radar signals transmitted by radar device 204 associated with vehicle 202 and reflected from target 206 or vehicle 210, and the signals that cause a false target to be detected at radar device 204 (which may also be referred to as a false detection of the target). Radar device 204 may be a component of vehicle 202, or may be removably located at vehicle 202. Radar device 204 may be a separate device that may be associated with vehicle 202. A ranging radar (e.g., radar device 204) may be incorporated into vehicle 202 for performing collision avoidance and other related techniques. Vehicle 210 may similarly include a ranging radar. Although Figure 2 An example of radar application for vehicles is shown, but combined with Figure 2 The aspects described similarly apply to non-vehicle-mounted radar equipment. Radar equipment 204 at vehicle 202 can be configured to transmit a radar signal / pulse (e.g., 230) corresponding to FOV 250 and receive a return signal (e.g., reflected signal 232) based on the reflection of the radar signal from an object (which may be referred to as a target). Radar equipment 204 at vehicle 202 can measure the time delay between the transmission of the radar signal and the reception of the return signal (e.g., the reflected signal) to determine the distance to the object reflecting the return signal. In some cases, radar equipment 204 may detect a false target or may mistakenly detect a target based on interfering radar signals from another radar device. A false target or false detection of a target refers to detecting a target at a location that is not the actual presence of the target but due to interference. Figure 2 A vehicle 210 is shown that has another radar device capable of transmitting similar radar signals (e.g., direct transmission 234) to radar device 204. Figure 2As illustrated in the example, radar signal 230 from radar device 204 can be reflected from one or more targets (e.g., 206 and / or 210). Radar device 204 can also receive interference, such as direct signals (e.g., 234) from vehicle 210 or device 208, which causes radar device 204 at vehicle 202 to detect false targets based on shortened range / time offsets and with higher power, or to detect targets at inaccurate locations. For example, if radar device 204 receives a direct signal from device 208 and interprets it as a reflection of its own signal, radar device 204 will falsely detect a target closer than device 208. In some aspects, false target detection may be based on reflections of signals from another device rather than direct signals. For example, radar device 204 may receive a reflection of a signal from a radar device at vehicle 210, which is a reflection from device 208. If the radar device 204 at vehicle 202 cannot distinguish the radar reflection of signals transmitted by other devices from its own radar signal, vehicle 202 may misinterpret the received signals and incorrectly measure the distance to target 206a. Vehicle 202 may then determine the presence of an incorrect target 206b at an incorrect location based on this signal.

[0059] As the number of vehicles equipped with sensing devices (such as ranging radar) in a given area increases, so does the interference. There may be little or no coordination between sensing devices / radars. For example, vehicle 210 and device 208 may transmit radar signals or other signals independently of the conditions associated with radar device 204 of vehicle 202. Therefore, the signal received by radar device 204 of vehicle 202 may include not only the return / reflection of its own signal, but also different signals (e.g., interference) transmitted from radar (e.g., 214) associated with another vehicle (such as vehicle 210) or another signal from one or more additional devices (such as device 208). If radar device 204 interprets these additional signals as reflections of its own radar signal, the added signals may lead to the detection of false targets. Thus, multiple radar sources operating close to each other may cause significant interference to the other radars of those multiple radar sources. Since a particular radar waveform (such as frequency modulated continuous wave (FMCW)) received by radar device 204 of vehicle 202 may be unsigned, the radar return signal may not be distinguishable from the different radar signals transmitted from those multiple radar sources.

[0060] Vehicle 202 and / or radar equipment 204 can be configured to perform actions related to... Figure 1 The radar signal sensing component 198 is related to various aspects. Furthermore, the erroneous target 206b can be configured to perform actions related to... Figure 1 The congestion indicator component 199 is related to various aspects.

[0061] Figure 3 This demonstrates what can be achieved by radar equipment (such as...) Figure 1 Radar equipment 103 and / or Figure 2 A schematic diagram 300 shows the waveforms of the transmitted signal 302 and the corresponding return signal 304 transmitted and received by the radar device 204 or 214 in the radar system. For example, Figure 2 It shows the result of Figure 2 The signal 230 transmitted by the radar device 204 can correspond to the transmitted signal 302, and Figure 2 The reflected signal 232 can correspond to the return signal 304. Signals 302-304 can be associated with the FMCW waveform used by the radar for frequency scanning. The transmitted signal 302 can correspond to an instantaneous frequency that increases from zero to a higher frequency based on sinusoidal operation and then decreases from the higher frequency back to zero. Each up and down scan can correspond to a single pulse or chirp of the FMCW. The chirp time can be determined by T. c The indication, and the upward scan time can be determined by T. up Indication. For example, the frequency can be scanned up from 77 GHz to 78 GHz to provide a 1 GHz scan bandwidth. The time period elapsed for scanning up 1 GHz of bandwidth can correspond to T. up After the radar scans upward to 78 GHz, the downward scan and return to 77 GHz can take an additional non-zero time length. This additional non-zero time length can correspond to T. down Therefore, T up +T down It can be equal to T c (For example, the duration of the chirp / pulse). In the example, it can be based on a specific T. c Parameters are used to configure the radar.

[0062] The radar can receive a series of chirps via a return signal 304 matched with the transmitted signal 302, although delayed based on the location of the object reflecting the return signal. As the distance between the radar and the object increases, the corresponding delay may become larger. The distance to the object can be determined based on this delay. For example, instead of directly measuring the delay time, the frequency increment between the transmitted signal 302 and the return signal 304 can be determined, where the frequency increment can be proportional to the delay. The distance to the object can be further determined based on the proportionality between the delay and the distance. The frequency increment can be compared with the beat frequency (F) determined based on the Fast Fourier Transform (FFT). b This is associated with the ranging spectrum. The beat frequency can correspond to the mixed output of the transmitted signal 302 and the returned signal 304. The slope used for the upward scanning frequency (e.g., per T) can be defined. up(1 GHz per second), so that the rate of change of the slope can correspond to the beta (β) parameter.

[0063] The parameters of the transmitted signal 302 and the returned signal 304 can indicate the maximum (e.g., theoretical) detectable range of the radar's FMCW receiver. For radars with longer ranges, 100-300 m may be the maximum detectable range. The parameters can also indicate the maximum detectable velocity / rate (e.g., 30-40 m / s). For example, the velocity of an object can be determined based on the Doppler spectrum based on multiple received chirps, and the orientation of the object can be determined based on the direction of arrival (DoA) spectrum. In the example, parameters such as x(t) = e^(-t / t) can be determined based on the parameters of the FMCW waveform. jβt^2 ; y(t) = x(t – τ) = e jβ(t – τ)^2 ; and / or y(t)x (t) = e -j2πβτt e jβτ^2 The output is given by , where x corresponds to the transmitted chirp signal, y corresponds to the received chirp signal, t corresponds to time, and j corresponds to . And τ corresponds to the delay between the transmitted chirp and the received chirp. That is, three different frequency analyses can be performed to determine ranging, rate, and / or direction.

[0064] Figure 4 This is a block diagram of a first wireless device 410 having components for wireless transmission. Wireless device 410 may be a radar device configured to perform the aspects set forth herein (e.g., similar to radar device 103), or the wireless device may include radar device 103. For example, the first wireless device 410 may support wireless communication as well as the transmission and reception of radar signals. In some examples, wireless device 410 is capable of communicating with another wireless device 450, for example, via a side link and / or access link, such as in combination with... Figure 1 As described. Wireless device 410 may include one or more antennas 420 and may include a transmitter / receiver 418 having a corresponding transmit processor 416 and a receive processor 470 configured to perform radar transmission and measurement, such as in combination. Figure 2-3 As described. The one or more antennas 420, transmitter / receiver 418, transmit processor 416, and receive processor 470 can transmit radar signals and receive reflections of radar signals. Controller / processor 475 can determine radio frequency (RF) sensing information about a target based on the received signals. Transmit processor 416 and receive processor 470 can communicate with channel estimator 474.

[0065] In some examples, in addition to RF sensing, the wireless device 410 is also capable of wireless communication. For communication, packets can be provided to the controller / processor 475. The controller / processor 475 implements Layer 3 and Layer 2 functions. The transmit (TX) processor 416 and the receive (RX) processor 470 implement Layer 1 functions associated with various signal processing functions. Different spatial streams can be provided to different antennas 420 via individual transmitters TX. Each transmitter TX can use the corresponding spatial stream to modulate an RF carrier for transmission.

[0066] At wireless device 450, each receiver 454 RX receives signals through its respective antenna 452. Each receiver 454 RX recovers the information modulated onto the RF carrier and provides this information to the receive (RX) processor 456. TX processor 468 and RX processor 456 implement Layer 1 functions associated with various signal processing functions. RX processor 456 can perform spatial processing on this information to recover any spatial streams destined for wireless device 450. If multiple spatial streams are destined for wireless device 450, RX processor 456 can combine them into a single stream, such as an OFDM symbol stream. RX processor 456 can use a Fast Fourier Transform (FFT) to transform the OFDM symbol stream from the time domain to the frequency domain. The frequency domain signal can include a separate OFDM symbol stream for each subcarrier of the OFDM signal. Symbols and reference signals on each subcarrier are recovered and demodulated by determining the most probable signal constellation points transmitted by wireless device 410. These soft decisions can be based on channel estimates calculated by channel estimator 458. The soft decision is then decoded and deinterleaved to recover the data and control signals originally transmitted by the wireless device 410 on the physical channel. The data and control signals are then provided to the controller / processor 459, which implements Layer 3 and Layer 2 functions.

[0067] The controller / processor 459 may be associated with a memory 460 that stores program code and data. The memory 460 may be referred to as a computer-readable medium. The controller / processor 459 provides demultiplexing, packet reassembly, decryption, header decompression, and control signal processing between transport and logical channels to recover IP packets from the EPC 160. The controller / processor 459 may also be responsible for error detection using ACK and / or NACK protocols to support HARQ operation.

[0068] The TX processor 468 can use channel estimates derived by the channel estimator 458 from reference signals or feedback transmitted by the wireless device to select appropriate coding and modulation schemes, and to facilitate spatial processing. The spatial stream generated by the TX processor 468 can be provided to different antennas 452 via individual transmitters 454TX. Each transmitter 454TX can use the corresponding spatial stream to modulate an RF carrier for transmission.

[0069] The received transmissions can be processed at wireless device 410 in a manner similar to that described in conjunction with the receiver function at wireless device 450. Each receiver RX receives the signal through its respective antenna 420. Each receiver RX recovers the information modulated onto the RF carrier and provides that information to the RX processor 470.

[0070] Controller / processor 475 may be associated with memory 476, which stores program code and data. Memory 476 may be referred to as a computer-readable medium. In UL, controller / processor 475 provides demultiplexing, packet reassembly, decryption, header decompression, and control signal processing between transport and logical channels to recover packets from wireless device 450. Controller / processor 475 may also be responsible for error detection using ACK and / or NACK protocols to support HARQ operation.

[0071] At least one of the TX processor 416, RX processor 470, or controller / processor 475 can be configured to perform and Figure 1 The radar signal sensing component 198 is related to various aspects of adjusting radar transmission based on the congestion level in the wireless communication environment.

[0072] At least one of the TX processor 468, RX processor 456, or controller / processor 459 can be configured to perform and Figure 1 The congestion indicator component 199 relates to various aspects of reducing congestion in wireless communication environments.

[0073] Figures 5A-5BSchematic diagrams of the ranging spectrum are shown in diagrams 500-550. If the transmitted signals from the radar and the jamming source (e.g., radar components associated with vehicle 202 and separate radar device 204) scan frequencies in the same direction, the jamming received by the radar may cause false peaks (e.g., "phantom targets") to be indicated on the ranging spectrum. For example, a target may be indicated as a peak on diagram 500 based on the received signal reflected from the target (of the radar device's own radar signal). False peaks may occur when the radar device receives signals that are not reflected from different devices (e.g., different radar devices, sensing devices, etc.) that are not its own reflected signals. However, because the jamming source signal may be indistinguishable from the signal of the intended target, the peak may correspond to a jamming source / false target.

[0074] If the radar and the jamming source transmit signals scanning frequencies in opposite directions, the jamming received by the radar may result in broadband noise being indicated on the ranging spectrum. For example, the jamming source might utilize different chirps, such as those used to scan frequencies upwards while simultaneously scanning downwards in opposite scanning directions. In such cases, the jamming source might be indicated as broadband noise, as illustrated in schematic diagram 550. Regardless of whether the jamming is indicated as peak or broadband noise, it can be severe enough to make the intended target potentially undetectable. For example, a broadband noise level might correspond to -85 dB, while the intended target might correspond to a lower dB level, such as -100 dB.

[0075] A radar can transmit a series of pulses into an environment that may already contain information indicating anticipated targets and / or clutter within its field of view (FOV). For example, a radar may have this information for performing tracking operations. By identifying spurious peaks and / or measuring noise levels, a radar can determine a portion of the received power that is not correlated with its return signal. The congestion level can also be determined based on this portion of the received power that is not correlated with the radar's return signal. Alternatively, a radar can pause operation and "listen" for signals from other radar transmitters. Radar signals received during the radar's pause (e.g., from other radar transmitters) can indicate the congestion level.

[0076] Figure 6This is a schematic diagram 600 illustrating parameter adjustments for reducing radar ranging according to an example. Vehicles can utilize radar to perform collision avoidance techniques based on the detection of objects (such as other vehicles, pedestrians, etc.) near the radar / vehicle. In congested environments (e.g., environments with other radar devices emitting interfering radar signals), the detection of closer objects / targets can have a higher priority than the detection of farther objects / targets. For example, vehicle navigation technology in urban environments may prioritize the detection of an object 20m away over the detection of an object 200m away, because driving speeds may be slower in such environments. While distant objects can still be detected in some cases, the radar / vehicle can be configured to determine that the priority of detecting distant objects decreases as the level of radar signal congestion in the environment increases. That is, the priority of detecting objects closer to the radar / vehicle can increase as the level of congestion increases.

[0077] Congestion sensing for radar / vehicles can be performed based on the content and quantity of detected messages. In one example, a radar device associated with a vehicle can determine the congestion level based on the content and / or quantity of vehicle-to-vehicle (V2V) messages, vehicle-to-infrastructure (V2I) messages, and / or vehicle-to-everything (V2X) messages. In another example, the radar device can determine the congestion level based on the content or quantity of lateral link messages. In other examples, the detected messages can be lateral link messages not associated with a vehicle, or they can be non-lateral link messages providing information about other radar devices and / or radar congestion. These messages can be configured for other vehicles and devices to communicate with the radar / vehicle. The congestion level can be determined based on the quantity of messages received by the radar, which can further indicate the number of target objects near the radar / vehicle. For example, a UE carried by a pedestrian can be configured to periodically transmit location information that can be received by the vehicle and indicates the pedestrian's position relative to the vehicle.

[0078] Infrastructure such as base stations can also communicate with radar / vehicles based on vehicle message channels. In the example, communication received from the base station could be based on messages sent by other devices, such as UEs carried by pedestrians. When the infrastructure determines that a threshold congestion level exists near the vehicle, it can provide the vehicle with an indication of the congestion level.

[0079] Additionally, congestion sensing can be performed by radar based on interference determined from spurious peaks or increased noise floor in the ranging spectrum. In the example, position tracking information can be used together with interference information to perform congestion sensing. In less congested environments, radar images can be correlated with nominal noise floor. For example, some targets can be identified based on radar images, which may or may not include nominal amounts of interference. However, in more congested environments, noise floor may increase, which may correspond to more targets and / or higher levels of interference in the radar image. Therefore, the level of congestion in the environment can be determined by radar / vehicle based on radar images.

[0080] The techniques used to determine congestion levels can vary as long as the radar signal transmission is configured to be adapted based on congestion measurements or congestion indicators. After determining that the congestion level exceeds a defined threshold based on congestion sensing techniques, the detection range of the radar waveform can be reduced, thereby providing reduced interference. A congestion level exceeding the defined threshold can indicate that the detection of objects with longer ranges within the field of view may have a lower priority, and the radar's detection range can be reduced to prioritize the detection of objects with shorter ranges.

[0081] It can be based on factors such as the speed of light (c), the bandwidth (B) of the radar scan (e.g., 1 GHz, 500 MHz, etc.), and the upscan time (T). up ) and sampling frequency (f s Parameters such as ) are used to determine the maximum detectable distance (R) max That is, R max = (c / 2B)T up f s This can be achieved by reducing T. up This reduces the maximum detectable distance. For example, as shown in diagram 600, if T is reduced without adjusting the bandwidth or sampling frequency... up If R is halved, then max It can also be halved.

[0082] In a field of view with a shortened detection range, the radar can be configured to detect the same velocity as it would be detectable in a field of view with a longer detection range. That is, V max = c / (4f c T c Carrier frequency (f) c ) and chirping time (T c ) can remain unchanged. By decreasing T up This can shorten the duration of the transmitted pulse, but the radar can be based on T. cContinue sending more chirps. As a result, discontinuous transmissions (DTX) between chirps increase, and based on the increased DTX, the likelihood of interference can be reduced, thereby reducing the interference level.

[0083] Furthermore, the path loss used to overcome radar signals can be reduced by using shorter field-of-view ranging to achieve a defined receive power (P). rx The transmit power (P) tx That is, as the ranging distance of the field of view decreases, the maximum path loss can decrease. Therefore, reducing the transmit power can provide reduced interference. For example, P rx = P tx + G tx + G rx + RCS – 30log 10 (4π) –40log 10 R, where G tx Corresponding to the transmit gain, G rx Corresponding to the receiver gain, RCS corresponds to the radar cross section, and R corresponds to the radar ranging.

[0084] Figures 7A-7B Schematic diagrams 700-750 show different ranging methods with respect to the radar's field of view. For example, schematic diagram 700 corresponds to a longer ranging method with the field of view, and schematic diagram 750 corresponds to a shorter ranging method with the field of view. Figure 7B The shorter duration of each chirp or pulse corresponds to a shorter range in the radar device's field of view. The radar can detect congestion levels based on the number of devices / transmitting signals near the radar. If the congestion level exceeds a threshold, the radar can reduce the upscan time (T0). up This can be used to reduce (e.g., the maximum detection range in schematic 700). Therefore, a larger DTX can be provided between pulses (e.g., to provide schematic 750). The transmit power can also be reduced based on the reduction in maximum detection range.

[0085] By shortening the range of the radar's field of view, radar can prioritize the detection of closer objects without affecting the detection of their speed or direction. In other words, it simply reduces the radar's range to minimize interference and increase the detection of closer objects. Shortening the range of the radar's field of view also reduces interference with other equipment in the vicinity.

[0086] Therefore, radar signals can be adapted based on the detection of congestion in wireless communication environments. For example, short-range radar may be more reliable in congested environments. Thus, radar nodes can adjust one or more parameters of the radar signal for short-range sensing, for example, by reducing the chirp length and / or transmit power.

[0087] Figure 8This is a flowchart 800 of a method for wireless communication at a wireless device. The wireless device may be radar devices 103, 204; a vehicle 202; and / or a device 1202 (e.g., vehicle-mounted radar or non-vehicle-mounted radar). This method can be performed to reduce interference at the wireless device or interference caused by the wireless device.

[0088] At point 802, the wireless device can detect the congestion level of the wireless communication environment including the wireless device—the wireless device has at least one of a first FOV or a first ranging within the wireless communication environment. For example, refer to Figure 1 In connection with 7, radar device 103 can detect congestion via communication with UE 104 (which may be an RSU or another radar device), measuring the wireless communication environment (e.g., via radio signal 105), etc. Schematic diagram 700 illustrates a longer FOV ranging (e.g., the first FOV and first ranging of radar devices 103 / 204). Detection at 802 can be achieved by... Figure 12 The detection component 1240 of the device 1202 in the middle is used to perform the operation.

[0089] At point 804, the wireless device can, based on a congestion level exceeding a threshold, transmit a radar signal corresponding to at least one of a second FOV or a second ranging within the wireless communication environment, wherein the second FOV or at least one of the second ranging is less than the first FOV or at least one of the first ranging. For example, refer to... Figure 1-2 And 7, radar devices 103 / 204 can transmit radar signal 105 corresponding to the shorter range FOV shown in schematic diagram 750 instead of the longer range FOV shown in schematic diagram 700. A second FOV or at least one of the first FOV or first range (e.g., shown in schematic diagram 700) smaller than at least one of the first FOV or first range (e.g., shown in schematic diagram 750) can increase the detection accuracy of radar devices 103 / 204 for one or more targets 107 / 206a in a wireless communication environment. Transmission at 804 can be by Figure 12 The transmission component 1234 of the device 1202 in the middle is used to perform the operation.

[0090] Figure 9 This is a flowchart 900 of a method for wireless communication at a wireless device. The wireless device may be radar devices 103, 204; a vehicle 202; and / or a device 1202 (e.g., vehicle-mounted radar or non-vehicle-mounted radar). This method can be performed to reduce interference at the wireless device or interference caused by the wireless device.

[0091] At 902a, a wireless device can receive one or more sidelink messages from one or more sidelink devices, wherein the congestion level is detected based on the amount of sidelink messages received by the wireless device. For example, refer to Figure 1A specific UE 104 (which may include radar device 103) can communicate with each other via one or more side-link channels using D2D communication link 158. Reception at 902a can be achieved by... Figure 12 The receiving component 1230 of the device 1202 in the middle performs the operation.

[0092] At 902b, the wireless device may additionally or alternatively measure the congestion level based on one or more other received radar signals that do not correspond to the transmitted radar signal sent by the wireless device. For example, refer to Figure 2 Radar device 204 can measure interference at half-range / time offset with high power. The interference measured by radar device 204 can indicate the congestion level. Measurements at 902b can be performed by… Figure 12 The measurement component 1246 of the device 1202 is used to perform the measurement.

[0093] At 902c, the wireless device may additionally or alternatively receive a message indicating the congestion level of the wireless communication environment—the wireless device uses this message to detect the congestion level. For example, see reference... Figure 1 A specific UE 104 (which may include radar device 103) can communicate with each other via one or more sidelink channels using D2D communication link 158. In each respect, the message can be received from at least one of the base station 102 or a sidelink device (such as UE 104 / RSU). Reception at 902a can be performed by... Figure 12 The receiving component 1230 of the device 1202 in the middle performs the operation.

[0094] At 904, the wireless device can (e.g., based on any of 902a-902c) detect the congestion level of the wireless communication environment including the wireless device—the wireless device having at least one of a first FOV or a first ranging within the wireless communication environment. For example, refer to Figure 1 In connection with 7, radar device 103 can detect congestion via communication with UE 104 (which may be an RSU or another radar device), measuring the wireless communication environment (e.g., via wireless signal 105), etc. Schematic diagram 700 illustrates a longer range of FOV (e.g., the first FOV and first range of radar devices 103 / 204). The wireless device (e.g., radar device 103) can be a vehicle-mounted radar or a non-vehicle-mounted radar. Detection at 904 can be performed by... Figure 12 The detection component 1240 of the device 1202 performs this action. A second FOV or at least one of the first FOV or the first range may correspond to at least one of a first reduction in interference associated with the transmitted radar signal or a second reduction in interference associated with the reflection of the received radar signal.

[0095] At 906, the wireless device can adjust one or more parameters of the radar signal to transmit a radar signal corresponding to at least one of a second FOV or a second range, wherein the second FOV or the second range is smaller than the first FOV or the first range. For example, the wireless device can reduce the first FOV or the first range to at least one of the second FOV or the second range. The wireless device can increase the DTX time between the chirp, pulse, or transmission of the radar signal. For example, refer to... Figure 1-2 Figures 6-7, and 600, illustrate parameter adjustments for reducing the ranging of radar device 103. Figure 750 shows a shorter ranging of FOV (e.g., the second FOV and second ranging of radar device 103 / 204), which is smaller than the longer ranging of FOV shown in Figure 700 (e.g., the first FOV and first ranging of radar device 103 / 204). Based on Figure 600, a wireless device can reduce the upscan time (T) of the radar signal transmitted by radar device 103 / 204. up Wireless devices can reduce the transmission power (P) of radar signals 105 transmitted by radar devices 103 / 204. tx P tx This can correspond to the reduced path loss of the radar signal 105 transmitted by radar devices 103 / 204. The adjustment at 906 can be achieved by... Figure 12 The transmission component 1234 of the device 1202 in the middle is used to perform the operation.

[0096] At point 908, the wireless device can, based on a congestion level exceeding a threshold, transmit a radar signal corresponding to at least one of a second FOV or a second ranging in the wireless communication environment, wherein the second FOV or at least one of the second ranging is less than the first FOV or at least one of the first ranging. For example, refer to... Figure 1-2 And 7, radar devices 103 / 204 can transmit radar signal 105 corresponding to the shorter range FOV shown in schematic diagram 750 instead of the longer range FOV shown in schematic diagram 700. A second FOV or at least one of the first FOV or first range (e.g., shown in schematic diagram 700) smaller than at least one of the first FOV or first range (e.g., shown in schematic diagram 750) can increase the detection accuracy of radar devices 103 / 204 for one or more targets 107 / 206a in a wireless communication environment. Transmission at 908 can be by Figure 12 The transmission component 1234 of the device 1202 in the middle is used to perform the operation.

[0097] At point 910, the wireless device can receive the reflection of the radar signal based on one or more parameters. For example, refer to... Figure 1-2And 6, radar devices 103 / 204 can receive reflected signals from target 206a (e.g., based on the parameters shown in schematic diagram 600). A second FOV or at least one of the first FOV or the first range (e.g., shown in schematic diagram 700) less than at least one of the first FOV or the first range (e.g., shown in schematic diagram 700) can correspond to at least one of a first reduction in interference with radar signal 105 transmitted by radar devices 103 / 204 or a second reduction in interference with the reflection of radar signal received at radar device 204. Interference can be reduced based on an increase in the DTX time between chirps of radar devices 103 / 204. Reception at 910 can be achieved by Figure 12 The receiving component 1230 of the device 1202 in the middle performs the operation.

[0098] Figure 10 This is a flowchart 1000 of a method for wireless communication at a second wireless device. The second wireless device may be a UE 104, a base station 102, an erroneous target 206b; and / or a device 1202 (e.g., vehicle / non-vehicle radar, roadside unit (RSU), etc.). This method can be implemented to reduce congestion in the wireless environment.

[0099] At point 1002, the second wireless device can measure the congestion level of the wireless communication environment including the first wireless device—the first wireless device having at least one of a first field of view (FOV) or a first ranging within the wireless communication environment. For example, refer to... Figure 1 In step 7, UE 104 measures radar signals (such as radar signal 105 of radar device 103) to determine the congestion level in the wireless communication environment. Schematic diagram 700 shows that radar device 103 may have a longer range with a field of view (FOV) (e.g., a first FOV and a first range of radar device 103). The measurement at 1002 can be performed by... Figure 12 The measurement component 1246 of the device 1202 is used to perform the measurement.

[0100] At point 1004, the second wireless device can send a message to the first wireless device based on a congestion level. This message is associated with the first wireless device having at least one of a second field of view (FOV) or a second ranging in the wireless communication environment, where the second FOV or the second ranging is less than the first FOV or the first ranging. For example, refer to... Figure 1 UE 104 (which may correspond to an RSU or other side-link device) can communicate with radar device 103 via one or more side-link channels using D2D communication link 158. This communication can be associated with a second FOV or at least one of a second range (e.g., shown in schematic 750) smaller than at least one of a first FOV or a first range (e.g., shown in schematic 700). Transmission at 1004 can be performed by… Figure 12The transmission component 1234 of the device 1202 is used to perform this operation. For example, the message may include one or more parameters related to at least one FOV or first ranging decreasing to a second FOV or second ranging.

[0101] Figure 11 This is a flowchart 1100 of a method for wireless communication at a wireless device. The wireless device may be radar devices 103, 204; a vehicle 202; and / or a device 1202 (e.g., vehicle-mounted radar or non-vehicle-mounted radar). This method may be performed to reduce interference at the wireless device or interference caused by the wireless device.

[0102] At 1102, the wireless device can receive one or more sidelink messages from one or more sidelink devices within the radar detection range of the wireless device to determine the congestion level corresponding to the amount of sidelink messages received by the wireless device. This reception can be performed, for example, by the receiving component 1230 of the RF baseband processor 1204 in device 1202. For example, refer to... Figure 1 A specific UE 104 (which may include radar device 103) may communicate with each other via one or more side-link channels using D2D communication link 158. The level of interference / congestion within the range of the radio signal 105 can be determined based on the amount of communication received by UE 104 / radar device 103 on D2D communication link 158.

[0103] At point 1104, the wireless device can receive radar signal information that does not correspond to the wireless device's radar signal, in order to determine the congestion level based on the radar signal information. For example, refer to... Figure 1 5. Radar device 103 can determine the interference / congestion level based on peak values ​​and / or broadband noise in the ranging spectrum (e.g., ranging spectrum schematics 500-550), where the peak values ​​and / or broadband noise can be correlated with radar signals from other radar signal transmitters. This reception can be performed, for example, by the receiving component 1230 of the RF baseband processor 1204 of device 1202.

[0104] At 1106, the wireless device can receive a message indicating the congestion level to determine the congestion level based on that message. For example, refer to... Figure 1 A specific UE 104 (which may include radar device 103) can receive messages from another device via Uu communication link 120 and / or D2D communication link 158. UE 104 / radar device 103 can determine the congestion level based on the received messages. In this example, the message can be received from base station 102 / 180 or a sidelink device (e.g., a second UE 104). This reception can be performed, for example, by the receiving component 1230 of the RF baseband processor 1204 of device 1202.

[0105] At point 1108, the wireless device can determine the congestion level of the wireless communication environment surrounding it, which is associated with a first region. For example, refer to... Figure 1 5. Radar device 103 can determine the interference / congestion level in at least a first portion of the access network environment surrounding radar device 103, for example, based on peak values ​​and / or broadband noise in ranging spectrum diagrams 500-550. This determination can be performed, for example, by the detection component 1240 of the RF sensing manager 1232 of device 1202.

[0106] At 1110, if the congestion level exceeds a threshold, the wireless device can reduce its radar detection range, with the reduced range associated with a second region smaller than the first region. This reduction can be performed, for example, by the ranging reduction component 1242 of the RF sensing manager 1232 of device 1202. For example, refer to... Figure 1 In conjunction with 5-6, radar device 103 can shorten the ranging of its field of view according to diagram 750 based on the fact that the peak values ​​and / or broadband noise in ranging spectrum diagrams 500-550 exceed a threshold dB indicating a congestion level. The reduced ranging of diagram 750 can correspond to at least a second portion of the access network environment surrounding radar device 103. This can be based on reducing the upscan time (T) of the radar signal 105 transmitted by wireless / radar device 103. up (e.g., as indicated by diagrams 600 and 750) to reduce the detection range of a wireless device (e.g., radar device 103). The reduced radar detection range (e.g., as indicated by diagrams 600 and 750) can reduce interference caused by one or more sensor signals 105 emitted by one or more other devices (e.g., UE 104 and / or base station 102 / 180). This can be based on the increased DTX time (T) between chirps of the wireless device / radar device 103. c To reduce interference, as shown in schematic diagram 750. A reduced detection range (e.g., associated with schematic diagram 750) can increase the detection of target objects in a second region of the access network that is smaller than the first region of the access network.

[0107] At position 1112, the wireless device can reduce the transmission power of the radar signal (P). tx This is used for reduced detection ranging in wireless devices. This reduction can be performed, for example, by the transmit power reduction component 1244 of the RF sensing manager 1232 of device 1202. For example, refer to... Figure 1 and 6 -7, Radar device 103 can reduce the P of radar signal 105 based on schematic diagram 600. txThis reduces the ranging capability of the radar device 103 by decreasing its field of view, as indicated by diagrams 700-750. For the radar signal 105 transmitted by the wireless / radar device 103, the P-value is reduced. tx This can be associated with reduced path loss, as indicated by schematic diagram 600.

[0108] At 1114, the wireless device can transmit radar signals with one or more adjusted parameters based on reduced radar detection ranging. For example, refer to... Figure 1 and 6 -7. Radar device 103 can transmit wireless signal 105 to shorten the field of view for ranging based on parameters indicated via schematic diagram 600, as shown via schematic diagram 750. This transmission can be performed, for example, by transmission component 1234 of device 1202.

[0109] At position 1116, the wireless device can receive reflections of radar signals to perform radar detection. For example, refer to... Figure 2 Vehicle 202 can receive reflected signals to detect target 206a. This reception can be performed, for example, by the receiving component 1230 of the RF baseband processor 1204 of device 1202.

[0110] Figure 12This is a schematic diagram 1200 illustrating an example of a hardware implementation of device 1202. Device 1202 is a radar signal sensing device and includes an RF baseband processor 1204 (also referred to as a modem) coupled to an RF transceiver 1222 and a radar component 1224 (such as a radar transceiver). In some examples, in addition to radar signal sensing, the device is also capable of wireless communication. For example, the device may be a radar device, a UE, a base station, or another access point capable of radar signal sensing. If the radar signal sensing device is a UE, the processor may be coupled to: one or more Subscriber Identity Module (SIM) cards 1220, an application processor 1206 coupled to a Secure Digital Card (SD) card 1208 and a screen 1210, a Bluetooth module 1212, a Wireless Local Area Network (WLAN) module 1214, a Global Positioning System (GPS) module 1216, and a power supply 1218. The RF baseband processor 1204 communicates with the UE 104 and / or BS 102 / 180 via the RF transceiver 1222 and / or radar component 1224. The RF baseband processor 1204 may include computer-readable media / memory. The computer-readable media / memory may be non-transitory. The RF baseband processor 1204 is responsible for general processing, including executing software stored on the computer-readable media / memory. The software, when executed by the RF baseband processor 1204, causes the RF baseband processor 1204 to perform the various functions described above. The computer-readable media / memory may also be used to store data manipulated by the RF baseband processor 1204 during software execution. The RF baseband processor 1204 also includes a receiving component 1230, an RF sensor manager 1232, and a transmitting component 1234. The RF sensor manager 1232 includes one or more of the components shown. The components within the RF sensor manager 1232 may be stored in computer-readable media / memory and / or configured as hardware within the RF baseband processor 1204. The RF baseband processor 1204 may be a component of the wireless device 450 and may include a memory 460 and / or at least one of a TX processor 468, an RX processor 456, and a controller / processor 459. In one configuration, the device 1202 may be a modem chip and may only include the RF baseband processor 1204, while in another configuration, the device 1202 may be an entire RF sensing device (e.g., radar device 103) and may include additional modules for the device 1202.

[0111] For example, as described in conjunction with 1102, 1104, 1106, and 1116, receiving component 1230 may be configured to: receive one or more sidelink messages from one or more sidelink devices within the radar detection range of the wireless device to determine a congestion level corresponding to the amount of sidelink messages received by the wireless device; receive radar signal information not corresponding to the radar signal of the wireless device to determine the congestion level based on the radar signal information; receive a message indicating the congestion level to determine the congestion level based on the message; and receive reflections of radar signals to perform radar detection. RF sensing manager 1232 may include detection component 1240 configured (e.g., as described in conjunction with 1108) to determine the congestion level of the wireless communication environment surrounding the wireless device, which is associated with a first area. The RF sensing manager 1232 may further include a ranging reduction component 1242 configured (e.g., as described in conjunction with 1110) to reduce the radar detection ranging of the wireless device if the congestion level exceeds a threshold, the reduced detection ranging being associated with a second region smaller than the first region. The RF sensing manager 1232 may also include a transmit power reduction component 1244 configured (e.g., as described in conjunction with 1112) to reduce the transmit power (P) of the radar signal. tx This is used for reduced detection ranging of wireless devices. The transmission component 1234 can be configured (e.g., as described in conjunction with 1114) to transmit radar signals with one or more adjusted parameters based on reduced radar detection ranging.

[0112] In another aspect, the receiving component 1230 may be configured (e.g., as described in conjunction with 902a, 902c, and 910) to: receive one or more sidelink messages from one or more sidelink devices—the wireless device detects the congestion level based on the amount of sidelink messages received by the wireless device; receive a message indicating the congestion level of the wireless communication environment to the wireless device—the wireless device detects the congestion level based on the message; and receive reflections of radar signals based on one or more parameters. The RF sensing manager 1232 may also include a measurement component 1246 configured (e.g., as described in conjunction with 902b) to: measure the congestion level based on one or more other radar signals received by the wireless device that do not correspond to the radar signals transmitted by the wireless device—the wireless device detects the congestion level based on the measurement of one or more other radar signals. The RF sensing manager 1232 may further include a detection component 1240 configured (e.g., as described in conjunction with 802 and 904) to: detect the congestion level of a wireless communication environment including a wireless device—the wireless device having at least one of a first field of view (FOV) or a first range within the wireless communication environment. The transmission component 1234 may be configured (e.g., as described in conjunction with 804, 906, and 908) to: adjust one or more parameters of a radar signal to transmit a radar signal corresponding to the wireless device having at least one of a second FOV or a second range, where the second FOV or second range is less than the first FOV or first range; and, based on a congestion level exceeding a threshold, transmit a radar signal corresponding to the wireless device having at least one of a second FOV or second range in the wireless communication environment, where the second FOV or second range is less than the first FOV or first range.

[0113] In another aspect, the RF sensing manager 1232 may also include a measurement component 1246 configured (e.g., as described in conjunction with 1002) to measure the congestion level of a wireless communication environment including a first wireless device—the first wireless device having at least one of a first field of view (FOV) or a first distance within the wireless communication environment. The transmission component 1234 may be configured (e.g., as described in conjunction with 1004) to send a message to the first wireless device based on the congestion level—the message being associated with the first wireless device having at least one of a second FOV or a second distance within the wireless communication environment, the second FOV or the second distance being less than the first FOV or the first distance.

[0114] The device may include execution Figure 8-11 The additional components of each block of the algorithm in the aforementioned flowchart. Thus, Figure 8-11Each block in the aforementioned flowchart can be executed by a component, and the device can include one or more of those components. A component can be: one or more hardware components specifically configured to execute the process / algorithm, implemented by a processor configured to execute the process / algorithm, stored in a computer-readable medium for processor implementation, or some combination thereof.

[0115] In one configuration, device 1202 (specifically, RF baseband processor 1204) includes: units for determining a congestion level in a wireless communication environment surrounding a wireless device, the wireless communication environment being associated with a first region (e.g., at least the detection component 1240 of RF sensor manager 1232); and units for reducing the radar detection range of the wireless device if the congestion level exceeds a threshold, the reduced detection range being associated with a second region smaller than the first region (e.g., at least the range reduction component 1242). Device 1202 may further include: units for transmitting a radar signal having one or more adjusted parameters based on the reduced radar detection range (e.g., at least the transmission component 1234 and / or RF transceiver); and units for receiving reflections of the radar signal to perform radar detection (e.g., at least the receiving component 1230, RF transceiver 1222, and / or radar component 1224). Device 1202 may also include: units for reducing the transmit power (P) of the radar signal. tx The apparatus 1202 may further include units for reducing detection ranging for wireless devices (e.g., at least transmit power reduction component 1244). The apparatus 1202 may also include units for receiving one or more sidelink messages from one or more sidelink devices in radar detection ranging of the wireless device, wherein the wireless device determines a congestion level corresponding to the amount of sidelink messages received by the wireless device (e.g., at least receiving component 1230). The apparatus 1202 may further include units for transmitting radar signals, wherein the wireless device determines the congestion level based on one or more reflected return signals from the radar signals (e.g., at least transmitting component 1234). The apparatus 1202 may further include units for receiving a message indicating a congestion level, wherein the wireless device determines the congestion level based on the message (e.g., at least receiving component 1230).

[0116] In another configuration, device 1202 (specifically, RF baseband processor 1204) includes: units for detecting a congestion level in a wireless communication environment including a wireless device having at least one of a first field of view (FOV) or a first range within the wireless communication environment; and units for transmitting a radar signal corresponding to at least one of a second FOV or a second range within the wireless communication environment, where the congestion level exceeds a threshold, wherein the second FOV or the second range is less than the first FOV or the first range. Device 1202 may further include: units for adjusting one or more parameters of the radar signal to transmit a radar signal corresponding to at least one of a second FOV or a second range, where the second FOV or the second range is less than the first FOV or the first range; and units for receiving reflections of the radar signal based on one or more parameters. Device 1202 may further include: units for receiving one or more sidelink messages from one or more sidelink devices, wherein the wireless device detects the congestion level based on the amount of sidelink messages received by the wireless device. The apparatus 1202 may further include: a unit for measuring a congestion level based on one or more other radar signals received by the wireless device that do not correspond to radar signals transmitted by the wireless device, wherein the wireless device detects the congestion level based on the measurement of the one or more other radar signals. The apparatus 1202 may further include: a unit for receiving a message indicating a congestion level of the wireless communication environment to the wireless device, wherein the wireless device detects the congestion level based on the message.

[0117] In another configuration, device 1202 (specifically RF baseband processor 1204) includes: a unit for measuring the congestion level of a wireless communication environment including a first wireless device having at least one of a first field of view (FOV) or a first ranging within the wireless communication environment; and a unit for sending a message to the first wireless device based on the congestion level, the message being associated with the first wireless device having at least one of a second FOV or a second ranging within the wireless communication environment, the second FOV or the second ranging being less than the first FOV or the first ranging.

[0118] The aforementioned unit may be one or more of the aforementioned components of device 1202 configured to perform the functions described by the aforementioned unit. As described above, device 1202 may include TX processor 468, RX processor 456, and controller / processor 459. Therefore, in one configuration, the aforementioned unit may be TX processor 468, RX processor 456, and controller / processor 459 configured to perform the functions described by the aforementioned unit.

[0119] It should be understood that the specific order or hierarchy of boxes in the disclosed process / flowchart is an illustration of exemplary methods. It should be understood that the specific order or hierarchy of boxes in the process / flowchart may be rearranged based on design preferences. Furthermore, some boxes may be combined or omitted. The appended method claims present the elements of the individual boxes in a sample order and are not intended to limit one to the specific order or hierarchy presented.

[0120] The preceding description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects. Therefore, the claims are not intended to be limited to the aspects shown herein, but should be given the full scope consistent with the language of the claims, wherein, unless specifically stated otherwise, references to singular elements are not intended to mean “one and only one,” but rather “one or more.” Terms such as “if,” “when,” and “at the time of” should be interpreted as indicating “under the condition of,” rather than implying a direct temporal relationship or reaction. That is, these phrases (e.g., “when”) do not imply an immediate action in response to the occurrence of an action or during the occurrence of an action, but simply imply that an action will occur if the condition is met, without requiring a specific or immediate temporal constraint on the occurrence of the action. 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” means 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 multiple A, multiple B, or multiple 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 only A, only B, only C, A and B, A and C, B and C, or A and B and C, wherein any such combination may include one or more members of A, B, or C. All structural and functional equivalents of elements throughout the various aspects described in this disclosure that are known to or will be known hereafter by those skilled in the art are expressly incorporated herein by reference and are intended to be covered by the claims. Furthermore, nothing disclosed herein is intended to be offered to the public, whether or not such disclosure is explicitly stated in the claims. Terms such as “module,” “mechanism,” “element,” “device,” etc., are not necessarily substitutes for the term “means.” Therefore, no element of a claim should be interpreted as a unit plus a functional unit unless the element is explicitly stated using the phrase “means for.”

[0121] The examples below are illustrative only and may be combined with, but are not limited to, other examples or aspects of the teachings described herein.

[0122] The following aspects are illustrative only and may be combined with, but are not limited to, other aspects or teachings described herein.

[0123] Aspect 1 is a method for wireless communication at a wireless device, comprising: detecting a congestion level of a wireless communication environment including the wireless device, the wireless device having at least one of a first field of view (FOV) or a first ranging within the wireless communication environment; and, based on the congestion level exceeding a threshold, transmitting a radar signal corresponding to the wireless device having at least one of a second FOV or a second ranging within the wireless communication environment, the second FOV or the at least one of the second ranging being smaller than the first FOV or the at least one of the first ranging.

[0124] Aspect 2 may be combined with aspect 1 and further includes: performing adjustments to one or more parameters associated with the radar signal to transmit the radar signal corresponding to the wireless device having a lower than the first FOV or the first ranging, and the second FOV or the second ranging.

[0125] Aspect 3 may be combined with any of aspects 1-2, and further includes: receiving the reflection of the radar signal based on the one or more parameters.

[0126] Aspect 4 can be combined with any of aspects 1-3, and includes: reducing the upscan time (T) of the radar signal based on one or more of the parameters. up ).

[0127] Aspect 5 can be combined with any of aspects 1-4, and includes: reducing the transmit power (P) of the radar signal transmitted by the wireless device. tx ).

[0128] Aspect 6 can be combined with any one of aspects 1-5, and includes: the P tx This corresponds to the reduced path loss of the radar signal.

[0129] Aspect 7 may be combined with any of aspects 1-6 and includes: a second FOV or the at least one of the first FOV or the first ranging, which is less than the first FOV or the at least one of the first ranging, corresponding to at least one of a first reduction in interference associated with the transmitted radar signal or a second reduction in interference associated with the reflection of the received radar signal.

[0130] Aspect 8 may be combined with any of aspects 1-7 and includes: increasing the DTX time between chirps of the wireless device.

[0131] Aspect 9 may be combined with any of aspects 1-8 and includes: reducing at least one of the first FOV or the first ranging to the second FOV or the second ranging.

[0132] Aspect 10 may be combined with any of aspects 1-9, and further includes: receiving one or more sidelink messages from one or more sidelink devices, wherein the congestion level is detected based on the amount of sidelink messages received by the wireless device.

[0133] Aspect 11 may be combined with any of aspects 1-10 and includes: the wireless device detecting the congestion level based on the amount of side link messages received by the wireless device.

[0134] Aspect 12 may be combined with any of aspects 1-11, and further includes: measuring the congestion level based on one or more other received radar signals that do not correspond to the transmitted radar signals transmitted by the wireless device.

[0135] Aspect 13 may be combined with any of aspects 1-12 and includes: the wireless device detecting the congestion level based on measuring the one or more other radar signals.

[0136] Aspect 14 may be combined with any of aspects 1-13, and further includes: receiving a message indicating the congestion level of the wireless communication environment, and detecting the congestion level based on the message.

[0137] Aspect 15 may be combined with any of aspects 1-14 and includes: the wireless device detecting the congestion level based on the message.

[0138] Aspect 16 may be combined with any of aspects 1-15 and includes: the message is received from at least one of the base station or the side link device.

[0139] Aspect 17 may be combined with any of aspects 1-16 and includes: the wireless device is a vehicle-mounted radar or a non-vehicle-mounted radar.

[0140] Aspect 18 may be combined with any of aspects 1-17, and further includes performing the method based on at least one of an antenna or a transceiver.

[0141] Aspect 19 is a method of wireless communication at a second wireless device, comprising: measuring a congestion level of a wireless communication environment including a first wireless device, the first wireless device having at least one of a first field of view (FOV) or a first distance within the wireless communication environment; and sending a message to the first wireless device based on the congestion level, the message being associated with the first wireless device having at least one of a second FOV or a second distance within the wireless communication environment, the second FOV or the second distance being less than the first FOV or the first distance.

[0142] Aspect 20 may be combined with aspect 19 and includes: the message includes one or more parameters for reducing at least one of the first FOV or the first ranging to the second FOV or the second ranging.

[0143] Aspect 21 may be combined with any of aspects 19-20, and further includes performing the method based on at least one of an antenna or a transceiver.

[0144] Aspect 22 is an apparatus for wireless communication, comprising: a memory and at least one processor, the memory and the at least one processor being configured to perform the method of any one of aspects 1-18.

[0145] In aspect 23, the apparatus of aspect 22 further includes: at least one antenna and a transceiver coupled to the at least one antenna and the at least one processor.

[0146] Aspect 24 is an apparatus for wireless communication, including a unit for performing the method of any one of aspects 1-18.

[0147] In aspect 25, the apparatus of aspect 24 further includes: at least one antenna and a transceiver coupled to said at least one antenna.

[0148] Aspect 26 is a non-transitory computer-readable storage medium storing computer-executable code that, when executed by at least one processor, causes the at least one processor to perform any one of aspects 1-18.

[0149] Aspect 27 is an apparatus for wireless communication, comprising: a memory and at least one processor, the memory and the at least one processor being configured to perform the method of any one of aspects 19-21.

[0150] In aspect 28, the apparatus of aspect 27 further includes: at least one antenna and a transceiver coupled to the at least one antenna and the at least one processor.

[0151] Aspect 29 is an apparatus for wireless communication, including a unit for performing the method of any one of aspects 19-21.

[0152] In aspect 30 and aspect 29, the apparatus further includes: at least one antenna and a transceiver coupled to said at least one antenna.

[0153] Aspect 31 is a non-transitory computer-readable storage medium storing computer-executable code, which, when executed by at least one processor, causes the at least one processor to perform any one of aspects 19-21.

Claims

1. An apparatus for wireless communication at a wireless device, comprising: Memory; as well as At least one processor is coupled to the memory and configured to: The detection includes the congestion level of a wireless communication environment comprising the wireless device, wherein the wireless device is or includes a radar device and has at least one of a first field of view (FOV) or a first ranging within the wireless communication environment, and wherein the detection of the congestion level of the wireless communication environment is based at least in part on the number of detected wireless devices and / or the number of signals detected by the wireless devices; and Based on the congestion level exceeding a threshold, a radar signal corresponding to at least one of a second FOV or a second ranging in the wireless communication environment is transmitted, wherein the second FOV or the at least one of the second ranging is less than the first FOV or the at least one of the first ranging.

2. The apparatus according to claim 1, wherein, In order to transmit the radar signal based on the congestion level, the at least one processor is further configured to: Perform adjustments to one or more parameters associated with the radar signal to correspond to at least one of the second FOV or the second ranging; and The reflection of the radar signal is received based on one or more of the parameters.

3. The apparatus according to claim 2, wherein, The adjustment of one or more parameters reduces the upscan time (T) associated with the transmitted radar signal. up ).

4. The apparatus according to claim 2, wherein, The adjustment of one or more parameters reduces the transmit power (P) associated with the transmitted radar signal. tx ).

5. The apparatus according to claim 4, wherein, Reduce the P tx The adjustment of the one or more parameters corresponds to a reduced path loss associated with the transmitted radar signal.

6. The apparatus according to claim 2, wherein, The second FOV or the at least one of the first FOV or the first ranging is less than the first FOV or the first ranging, corresponding to at least one of a first reduction in first interference associated with the transmitted radar signal or a second reduction in second interference associated with the reflection of the received radar signal.

7. The apparatus according to claim 6, wherein, The at least one processor is also configured to increase the discontinuous transmission (DTX) time between the chirps of the radar signal.

8. The apparatus according to claim 1, wherein, The at least one processor is further configured to reduce the first FOV or the first ranging to the second FOV or the second ranging.

9. The apparatus according to claim 1, wherein, The at least one processor is further configured to: Receive one or more sidelink messages from one or more sidelink devices, and The congestion level is detected based on the amount of one or more sidelink messages received from the one or more sidelink devices.

10. The apparatus according to claim 1, wherein, The at least one processor is further configured to measure the congestion level based on one or more other received radar signals that do not correspond to the transmitted radar signal.

11. The apparatus according to claim 1, wherein, The at least one processor is further configured to: Receive a message indicating the congestion level of the wireless communication environment, and The congestion level is detected based on the message.

12. The apparatus according to claim 11, wherein, The message originates from at least one of the base station or the sidelink device.

13. The apparatus according to claim 1, wherein, The wireless device is either vehicle-mounted radar or non-vehicle-mounted radar, and also includes: At least one antenna; and A transceiver coupled to the at least one antenna and the at least one processor.

14. An apparatus for wireless communication at a second wireless device, comprising: Memory; as well as At least one processor, coupled to the memory, is configured to: The measurement includes the congestion level of a wireless communication environment comprising a first wireless device, wherein the first wireless device is or includes a radar device and has at least one of a first field of view (FOV) or a first ranging within the wireless communication environment, and wherein the measurement of the congestion level of the wireless communication environment is based at least in part on the number of detected wireless devices and / or the number of signals detected by the radar device; and A message is sent to the first wireless device based on the congestion level, the message indicating an adjustment from at least one of the first FOV or the first ranging to at least one of the second FOV or the second ranging, wherein the second FOV or the at least one of the second ranging is smaller than the first FOV or the at least one of the first ranging.

15. The apparatus according to claim 14, wherein, The message includes one or more parameters indicating the adjustment from at least one of the first FOV or the first ranging to the second FOV or the second ranging.

16. A method for wireless communication at a wireless device, comprising: The detection includes the congestion level of a wireless communication environment comprising the wireless device, wherein the wireless device is or includes a radar device and has at least one of a first field of view (FOV) or a first ranging within the wireless communication environment, and wherein the detection of the congestion level of the wireless communication environment is based at least in part on the number of detected wireless devices and / or the number of signals detected by the wireless devices; and Based on the congestion level exceeding a threshold, a radar signal corresponding to at least one of a second FOV or a second ranging in the wireless communication environment is transmitted, wherein the second FOV or the at least one of the second ranging is less than the first FOV or the at least one of the first ranging.

17. The method of claim 16, further comprising: Adjust one or more parameters associated with the radar signal to transmit the radar signal corresponding to a second FOV or the second range that is less than the first FOV or the first range of the wireless device; as well as The reflection of the radar signal is received based on one or more of the parameters.

18. The method of claim 17, further comprising: The upward scan time (T) of the radar signal is reduced based on one or more of the parameters mentioned above. up ).

19. The method of claim 17, further comprising: Based on one or more of the parameters, reduce the transmit power (P) of the radar signal. tx ).

20. The method according to claim 19, wherein, The P tx This corresponds to the reduced path loss of the radar signal.

21. The method according to claim 17, wherein, The second FOV or the second ranging corresponds to at least one of a first reduction in a first interference associated with the transmitted radar signal or a second reduction in a second interference associated with the reflection of the received radar signal.

22. The method of claim 21, further comprising: Increase the discontinuous transmission (DTX) time between the chirps of the radar signal.

23. The method of claim 16, further comprising: Reduce at least one of the first FOV or the first ranging to the second FOV or the second ranging.

24. The method of claim 16, further comprising: One or more sidelink messages are received from one or more sidelink devices, wherein the congestion level is detected based on the amount of sidelink messages received by the wireless device.

25. The method of claim 16, further comprising: The congestion level is measured based on one or more other received radar signals that do not correspond to the transmitted radar signal sent by the wireless device.

26. The method of claim 16, further comprising: Receive a message indicating the congestion level of the wireless communication environment, and detect the congestion level based on the message.

27. The method according to claim 26, wherein, The message originates from at least one of the base station or the sidelink device.

28. The method according to claim 16, wherein, The wireless device is either a vehicle-mounted radar or a non-vehicle-mounted radar.

29. A method for wireless communication at a second wireless device, comprising: The measurement includes the congestion level of a wireless communication environment comprising a first wireless device, wherein the first wireless device is or includes a radar device and has at least one of a first field of view (FOV) or a first ranging within the wireless communication environment, and wherein the measurement of the congestion level of the wireless communication environment is based at least in part on the number of detected wireless devices and / or the number of signals detected by the radar device; and A message is sent to the first wireless device based on the congestion level, the message being associated with the first wireless device having at least one of a second FOV or a second ranging in the wireless communication environment, wherein the second FOV or the at least one of the second ranging is smaller than the first FOV or the at least one of the first ranging.

30. The method of claim 29, further comprising: Reduce at least one of the first FOV or the first ranging to the second FOV or the second ranging.

31. A non-transitory computer-readable storage medium storing computer-executable code, said code, when executed by at least one processor, causing said at least one processor to perform the method according to any one of claims 16-28.

32. A non-transitory computer-readable storage medium storing computer-executable code, said code, when executed by at least one processor, causing said at least one processor to perform the method according to any one of claims 29-30.

33. An apparatus for wireless communication at a wireless device, comprising a unit for performing the method according to any one of claims 16-28.

34. An apparatus for wireless communication at a second wireless device, comprising a unit for performing the method according to any one of claims 29-30.

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