Auxiliary Radar Congestion Mitigation

Abstract

A method for managing the operation of a first radar system (150) performed by a processor (131) of a first user equipment (UE) (130) of a first vehicle (110a) having the first radar system (150). In various embodiments, the processor (131) of the first UE (130) of the first vehicle (110a) may receive a wireless communication control message at the first UE (130) from a base station (105), the wireless communication control message including radar transmission configuration information or radar reception interference information regarding a radar signal (162b) from a second radar system of a second vehicle (110b) having a second UE (130). Some embodiments may use the radar transmission configuration information or the radar reception interference information received from the base station (105) to manage the operation of the first radar system (150).

Description

Background Art

[0001] Vehicles (such as motor vehicles) using and / or including a user equipment (UE) that uses radar for navigation assistance and / or control typically encounter other UEs that also use radar. In the case where both vehicles transmit radar signals, each vehicle may observe reflections of its own signal, plus the radar beam transmitted by the other vehicle or sidelobes from those directly transmitted beams, which may result in radar interference. Traditional systems employ countermeasures to reduce and / or avoid this type of radar interference. While such countermeasures generally help reduce interference, they do not completely avoid interference and are often ineffective. Summary of the Invention

[0002] Aspects include a method for transmitting information for managing the operation of a first radar system, implemented by a processor of a first UE of a first vehicle, a user equipment, and a computing device implementing the method. Aspects may include the processor of the first UE performing the following operations: receiving a wireless communication control message from a base station, the wireless communication control message including radar transmission configuration information or radar reception interference information regarding a radar signal from a second radar system of a second vehicle having a second UE; and using the radar transmission configuration information or the radar reception interference information received from the base station to manage the operation of the first radar system.

[0003] In some aspects, the wireless communication control message may include one of the following: a radio resource control (RRC) message, a media access control - control element (MAC-CE), downlink control information (DCI), or sidelink control information (SCI). In some aspects, the DCI or the SCI may be carried by one of the following: a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical sidelink control channel (PSCCH), or a physical sidelink shared channel (PSSCH).

[0004] In some aspects, the wireless communication control message may include radar transmission configuration information, the radar transmission configuration information including: a modified radar transmission configuration for use in operating the first radar system to avoid interference with the radar signal from the second radar system of the second vehicle. In some aspects, the wireless communication control message may include radar transmission configuration information for use in operating the first radar system, the radar transmission configuration information including at least one of the following: time or frequency resources; waveform, duty cycle, or starting point; transmission power; spatial, time, or frequency precoding information; or beam scanning pattern.

[0005] In some aspects, the wireless communication control message may include an indication that the first vehicle should immediately terminate radar transmission.

[0006] In some aspects, the wireless communication control message may be one of DCI or SCI, and the DCI or the SCI includes radar transmission configuration information for use in managing radar transmission by a first radar system to minimize interference with a plurality of radar components. The plurality of radar components may be at least one of the following cases: the radar components of the second radar system are installed at different positions on the second vehicle; transmitted using different polarization types; transmitted using different waveforms for radar transmission by the radar components of the second radar system; or transmitted using different support levels of the maximum transmission power of the radar components of the second radar system.

[0007] In some aspects, the wireless communication control message may be transmitted through a plurality of RRC configurations or MAC-CE messages or a set of DCI or SCI, including at least one of the following: different sets of DCI or SCI are distinguished by different synchronization signals (SS), radio network temporary identifiers, or other control information formats, where each format in the formats corresponds to different radar components of the second radar system; different sets of DCI or SCI are carried by different ones of the following: physical downlink control channel (PDCCH), physical downlink shared channel (PDSCH), physical sidelink control channel (PSCCH), or physical sidelink shared channel (PSSCH); or different sets of DCI or SCI specify semi-persistent radar signal transmission parameters for use by the first radar system of the first vehicle until the next set of DCI or SCI is received.

[0008] In some aspects, the plurality of RRC configurations or MAC-CE messages or sets of DCI or SCI are respectively associated with different radar components of the first radar system, and the different radar components include: radar components installed at different positions on the second vehicle; transmitted using different polarization types; transmitting different waveforms for radar transmission by the radar components of the second radar system; or transmitting at different transmit power levels.

[0009] In some aspects, the wireless communication control message is one of DCI or SCI, and the DCI or the SCI includes radar reception interference information for use when processing signals received by the first radar system corresponding to more than one radar component of the second radar system. The radar reception interference information includes at least one of the following: different mounting positions of the radar components of the second radar system on the second vehicle; different polarization types of the radar components of the second radar system; different waveforms for radar transmissions performed by the radar components of the second radar system; or different supported levels of the maximum transmission power of the radar components of the second radar system.

[0010] In some aspects, the wireless communication control message can be DCI or SCI, and using the radar transmission configuration information or the radar reception interference information received from the base station to manage the operation of the first radar system can include: pausing radar transmission in response to not receiving DCI or SCI until the next DCI or SCI is received.

[0011] In some aspects, the wireless communication control message can include radar transmission configuration information, and the radar transmission configuration information is part of group common downlink control information (GC-DCI) for a group of UEs including the first UE in a group of vehicles. A field within the GC-DCI can correspond to a specific UE within the group of UEs and identify radar signal transmission parameters to be used to manage the radar system of the corresponding vehicle within the group of vehicles. The GC-DCI can include a common field that identifies radar signal transmission parameters to be used to manage all radar systems in the group of vehicles.

[0012] In some aspects, the wireless communication control message can include radar reception interference information, and the radar reception interference information includes radar reception parameters configured such that the radar coupled to the first UE can mitigate radar reception interference from the radar signals of the second radar system from the second vehicle. The radar reception parameters include at least one of the position of the second vehicle or the radar signal parameters of the second radar system.

[0013] Further aspects may include a computing device acting as a UE or a base station, the computing device including a processor configured with processor-executable instructions to perform operations of any of the methods outlined above. Further aspects include a non-transitory processor-readable storage medium having processor-executable software instructions stored thereon, the processor-executable software instructions configured to cause a processor of a UE to perform operations of any of the methods outlined above. Further aspects include a processing device for use in a UE of a vehicle having a radar system and configured to perform operations of any of the methods outlined above. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings incorporated herein and constituting a part of this specification illustrate exemplary embodiments and, together with the general description given above and the detailed description given below, serve to explain the features of the various embodiments.

[0015] Figure 1A and 1B is a schematic diagram showing an example traffic control system suitable for implementing any of the various embodiments.

[0016] Figure 2 is a block diagram of components of an example system-in-package suitable for implementing any of the various embodiments.

[0017] Figure 3 is a block diagram of components of a software architecture including radio protocol stacks for a user equipment and a base station in wireless communication suitable for implementing any of the various embodiments.

[0018] Figure 4 is a block diagram of components of a system configured for radar interference management according to various embodiments.

[0019] Figure 5 is a process flow diagram of a method for vehicle radar interference management executed by a processor of a UE according to various embodiments.

[0020] Figure 6A and 6B is a process flow diagram of a method for vehicle radar interference management executed by a processor of a base station according to various embodiments.

[0021] Figure 7A and 7B is a schematic diagram showing an example traffic control system using a bistatic radar suitable for implementing any of some embodiments.

[0022] Figure 7C is a timing diagram showing an example timing of a communication signal and a bistatic radar signal according to some embodiments.

[0023] Figure 8A and / or 8B is a process flow diagram of an example method for vehicle radar interference management using bistatic radar transmission, executed by a processor of a computing device according to various embodiments.

[0024] Figure 9 is a process flow diagram of an example method for vehicle radar interference management using bistatic radar, executed by a processor of a computing device according to various embodiments.

[0025] Figure 10 is a component block diagram of a base station server computing device adapted to be used with various embodiments.

[0026] Figure 11 is a component block diagram of a user equipment adapted to be used with various embodiments. Detailed Description

[0027] Various embodiments will be described in detail with reference to the accompanying drawings. Where possible, the same reference numerals will be used throughout the drawings to refer to the same or like parts. References to specific examples and embodiments are for illustrative purposes only and are not intended to limit the scope of the various aspects or claims.

[0028] Various embodiments provide methods and systems that enable a vehicle radar system to avoid and / or tune out radar signals transmitted by one or more other vehicles, which can mitigate and / or reduce inter-vehicle radar interference. The base station can use control messages to send radar signal configuration information to the vehicle's UE, and such control messages can be carried on any of the various control channels in a wireless communication system. Compared to sending information in data messages, control message signaling for such information enables lower latency for transmitting such information. Various forms of radar signal configuration information and / or radar interference mitigation information can be sent to the vehicle UE, enabling the vehicle to reduce the incidence and / or mitigate interference by processing the radar interference that does occur.

[0029] The ground transportation industry increasingly hopes to leverage the growing capabilities of cellular and wireless communication technologies through the adoption of intelligent transportation system (ITS) technologies to improve the interoperability and safety of vehicles for driver operations and autonomous vehicles. Vehicle-to-everything (V2X) protocols (including vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-network communication (V2N), and vehicle-to-pedestrian (V2P) protocols) and in particular the cellular V2X (C-V2X) protocol and 5G new radio (NR)-based C-V2X (NR-V2X) defined by the 3rd Generation Partnership Project (3GPP) support ITS technologies and serve as the basis for vehicles to communicate directly with communication devices in their vicinity.

[0030] C-V2X and NR-V2X define two transmission modes that together provide 360° non-line-of-sight perception and a higher level of predictability to enhance road safety and autonomous driving. The first transmission mode includes direct V2X, which includes V2V, V2I, and V2P, and provides enhanced communication range and reliability in a dedicated ITS 5.9 gigahertz (GHz) spectrum independent of the cellular network. The second transmission mode includes V2N communication in mobile broadband systems and technologies such as 3rd generation wireless mobile communication technology (3G) (e.g., Global System for Mobile Communications (GSM) Evolution (EDGE) system, Code Division Multiple Access (CDMA) 1350 system, etc.), 4th generation wireless mobile communication technology (4G) (e.g., Long-Term Evolution (LTE) system, enhanced LTE system, Mobile WiMAX system, etc.), 5th generation wireless mobile communication technology (5G) (e.g., 5G new radio (5G NR) system, etc.).

[0031] As used herein, the term "vehicle" refers to one of various types of autonomous or semi-autonomous vehicles that can operate without an on-board human commander / driver (e.g., land vehicles (including cars, trucks, buses, etc.), airplanes, water vehicles, or combinations thereof). A vehicle may include an on-board computing device configured to operate and / or maneuver the vehicle without remote operation instructions (such as from a human operator or a remote computing device) (i.e., autonomously). Alternatively or additionally, according to various embodiments, the computing device on-board the vehicle may be configured to receive radar operation instructions and / or updates to the instructions from a base station via communication.

[0032] As used herein, the term "user equipment" refers to an electronic device that is at least equipped with a processor, a communication system, and a memory (i.e., an electronic storage device) located within or built into a vehicle for communicating with a wireless communication network. As defined in 3GPP specifications, European Telecommunications Standards Institute (ETSI) specifications, or other similar specifications, the user equipment may be equipped with a mobile broadband adapter and / or any similar device configured to connect to a base station (e.g., Node B / eNodeB).

[0033] As used herein, the term "base station" refers to an entity that communicates with wireless devices (e.g., UEs), and may also be referred to as NodeB, Node B, LTE evolved Node B (eNB), access point (AP), radio head, transmission reception point (TRP), new radio base station (NR BS), 5G Node B (NB), next generation Node B (gNB), etc. Each base station may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to the coverage area of a base station, the base station subsystem serving that coverage area, or a combination thereof, depending on the context in which the term is used. The base station may provide a connection between communication vehicles and / or communicate directly with one or more vehicles. The base station may operate as a hub for communication to and / or from one or more vehicles. The base station may provide communication coverage for macro cells, pico cells, femto cells, another type of cell, or a combination thereof. A macro cell may cover a relatively large geographic area (e.g., with a radius of several kilometers) and may allow unrestricted access by mobile devices with a service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by mobile devices with a service subscription. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by mobile devices associated with the femto cell (e.g., mobile devices in a closed user group (CSG)). The base station may support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "Node B", "5G NB", and "cell" may be used interchangeably herein.

[0034] As used herein, the term "system on a chip" (SOC) refers to a single integrated circuit (IC) chip that includes multiple resources and / or processors integrated on a single substrate. A single SOC can include circuitry for digital, analog, mixed-signal, and radio frequency functions. A single SOC can also include any number of general and / or dedicated processors (such as digital signal processors, modem processors, video processors, etc.), memory blocks (such as ROM, RAM, flash memory, etc.), and resources (such as timers, voltage regulators, oscillators, etc.). The SOC can also include software for controlling the integrated resources and processors and for controlling peripheral devices.

[0035] As used herein, the term "system in package" (SIP) can refer to a single module or package that includes multiple resources, computing units, cores, and / or processors on two or more IC chips, substrates, or SOCs. For example, a SIP can include a single substrate on which multiple IC chips or semiconductor dies are stacked in a vertical configuration. Similarly, a SIP can include one or more multi-chip modules (MCMs) in which multiple ICs or semiconductor dies are packaged into a unified substrate. A SIP can also include multiple independent SOCs that are coupled together via high-speed communication circuitry and are tightly packaged, for example, on a single motherboard or within a single wireless device. The proximity of the SOCs facilitates high-speed communication as well as sharing of memory and resources.

[0036] As used herein, the terms "component", "system", "unit", "module", etc. are intended to include computer-related entities, such as but not limited to hardware, firmware, combinations of hardware and software, software, or software in execution, which are configured to perform particular operations or functions. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and / or a computer. By way of illustration, both an application running on the processor of a communication device and the communication device can be referred to as components. One or more components can be located within a process and / or thread of execution, and a component can be located on one processor or core and / or distributed between two or more processors or cores. Additionally, these components can execute from various non-transitory computer-readable media having various instructions and / or data structures stored thereon. Components can communicate in ways such as local and / or remote procedure, function, or process calls, electronic signals, data packets, memory reads / writes, and other known communication methods related to networks, computers, processors, and / or processes.

[0037] Various embodiments can be implemented within various traffic control systems, examples of which are shown as traffic control system 100 in Figure 1A which is shown in Figure 1A, the transportation control system 100 may include at least one base station 105 configured to communicate with vehicles, such as a first vehicle 110a and a second vehicle 110b traveling on road 11. Additionally, one or both of the first vehicle 110a and the second vehicle 110b may be configured to use a radar system to measure distances, for navigation, proximity alerts, and other vehicle functions. Conventionally, the radar system from one vehicle (e.g., the first vehicle 110a) is prone to interfering with the radar system from another vehicle (e.g., the second vehicle 110b), but various embodiments provide systems for a vehicle (e.g., 110a) to avoid and / or tune out radar signals transmitted by another vehicle (e.g., 110b) and / or multiple other vehicles.

[0038] The base station 105 may include a control unit 140, which may include various circuits and devices for controlling its operation. In Figure 1A the example shown, the control unit 140 includes a processor 141, a memory 143, an input module 147, and an output module 149. Additionally, the control unit 140 may be coupled to a transceiver 145 for sending and / or receiving wireless communications and one or more sensors 160.

[0039] Each of the first vehicle 110a and the second vehicle 110b may include a user equipment (UE) 130, and the UE 130 may include various circuits and devices for controlling its operation. In Figure 1A the example shown, the UE 130 includes a processor 131, a memory 133, a radio module 135, an input module 137, and an output module 139. Additionally, the UE 130 may be coupled to a drive control component 154, a navigation component 156 of the vehicle 110a, and one or more sensors 150 (e.g., a radar system) and is configured to control the above-mentioned components.

[0040] Figure 1AIt shows that the first vehicle 110a coordinates with the base station 105 to reduce the radar interference of the radar emission 162b from the second vehicle 110b that the first vehicle 110a might otherwise encounter. The first radar system 150 of the first vehicle 110 can emit radar signals 162a and process the received reflected signals to identify objects in the path of the vehicle. However, other vehicles such as the second vehicle 110b are also emitting radar signals 162b, which may interfere with the ability of the first radar system 150 to detect and locate objects. To reduce such radar interference, the processor 141 of the base station 105 can determine radar transmission configuration information or radar reception interference information useful for the first radar system of the first vehicle 110a. Using the transceiver 145, the processor 141 of the base station 105 can then send a wireless communication control message to the UE 130 of the first vehicle 110a via the wireless signal 115, which includes the determined radar transmission configuration information or radar reception interference information. The UE 130 of the first vehicle 110a can receive the wireless communication control message, which includes radar transmission configuration information or radar reception interference information regarding the radar signals 162b from the second radar system of the second vehicle 110b. The processor 131 of the first vehicle 110a can then use the radar transmission configuration information or radar reception interference information received from the base station 105 to manage the operation of the first radar system.

[0041] The radio module 135 and / or the transceiver 145 can be configured to perform wireless communication by exchanging signals (e.g., command signals for controlling maneuvers, messages for optimizing the radar system, signals from navigation facilities, etc.) with the base station 105 and / or other network transceivers in the wireless communication link 115. The wireless communication link 115 can include multiple carrier signals, frequencies, or frequency bands, each of which can include multiple logical channels. In addition, the wireless communication link 115 can utilize one or more radio access technologies (RATs). Examples of RATs that can be used in the wireless communication link include 3GPP LTE, 3G, 4G, 5G (e.g., NR), GSM, code division multiple access (CDMA), wideband code division multiple access (WCDMA), worldwide interoperability for microwave access (WiMAX), time division multiple access (TDMA), and other mobile phone communication technologies (cellular RATs). Further examples of RATs that can be used in one or more of the various wireless communication links 115 within the communication system can include medium-range protocols such as Wi-Fi, LTE-U, LTE direct, LAA, MuLTEfire, and relatively short-range RATs such as ZigBee, Bluetooth, and Bluetooth low energy (LE).

[0042] Although the description of some embodiments may use terms and examples associated with LTE technology, the various embodiments may be applicable to other wireless communication systems, such as New Radio (NR) or 5G networks. NR may utilize Orthogonal Frequency Division Multiplexing (OFDM) with Cyclic Prefix (CP) on both the uplink (UL) and downlink (DL), and may include support for half-duplex operation using Time Division Duplexing (TDD). A single component carrier bandwidth of 100 MHz may be supported. An NR resource block may span 12 subcarriers with a subcarrier bandwidth of 75 kHz within a 0.1 ms duration. Each radio frame may consist of 50 subframes, having a length of 10 ms. Thus, each subframe may have a length of 0.2 ms. Each subframe may indicate the link direction for data transmission (i.e., DL or UL), and may dynamically switch the link direction for each subframe. Each subframe may include DL / UL data as well as DL / UL control data. Beamforming may be supported and the beam direction may be dynamically configured. Multi-Input Multi-Output (MIMO) transmission with precoding may also be supported. The MIMO configuration in the DL may support up to eight transmit antennas, where multi-layer DL transmission is up to eight streams and up to two streams per wireless device. Multi-layer transmission with up to two streams per wireless device may be supported. Aggregation of multiple cells with up to eight serving cells may be supported. Alternatively, NR may support different air interfaces in addition to the OFDM-based air interface.

[0043] In general, any number of communication systems and any number of wireless networks may be deployed in a given geographical area. Each communication system and wireless network may support a specific Radio Access Technology (RAT) and may operate on one or more frequencies. The RAT may also be referred to as radio technology, air interface, etc. The frequency may also be referred to as carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographical area to avoid interference between communication systems of different RATs. In some cases, an NR or 5G RAT network may be deployed.

[0044] The radio module 135 and / or transceiver 145 may provide the wireless communication link 115 to the processors 131, 141 and / or their other components, respectively. In some embodiments, the wireless communication link 115 may be a bi-directional or uni-directional communication link and may use one or more communication protocols. In some embodiments, the radio module 135 may enable the vehicle 110a to communicate with another vehicle 110b via another wireless communication link, which may also be a bi-directional or uni-directional communication link and may use one or more communication protocols.

[0045] The input modules 137 can receive sensor data from one or more vehicle sensors 150 (e.g., radar systems), as well as electronic signals from other components, including the drive control component 154 and the navigation component 156. Similarly, the input module 147 can receive sensor data from one or more station sensors 160 (e.g., radar systems) and electronic signals from other components. The sensors 150, 160 can detect the presence, direction, distance, and / or speed of other vehicles, individuals, and / or objects by emitting high-frequency electromagnetic wave pulses (e.g., radar signals 162a, 162b, 162c) that reflect back to the source from the objects.

[0046] The output modules 139, 149 can be used to communicate with or activate various components of the vehicle 110a and / or the base station 105, including the transceiver 145, the drive control component 154, the navigation component 156, and the sensors 150, 160.

[0047] The UE 130 can be coupled to the drive control component 154 to control the physical elements of the vehicle 110a related to the maneuvering and navigation of the vehicle, such as the engine, electric motor, throttle, steering elements, braking or decelerating elements, and so on. The drive control component 154 can also include components that control other devices of the vehicle, including environmental control (e.g., air conditioning and heating), external and / or internal lighting, internal and / or external information displays (which can include display screens or other devices for displaying information), safety devices (e.g., tactile devices, audible alarms, etc.), and other similar devices.

[0048] UE 130 may be coupled to the navigation component 156, and may receive data from the navigation component 156 and be configured to use such data to determine the current position and orientation of the vehicle 110a, as well as a suitable route towards a destination. In various embodiments, the navigation component 156 may include or be coupled to a Global Navigation Satellite System (GNSS) receiver system (e.g., one or more Global Positioning System (GPS) receivers), such that the vehicle 110a can use GNSS signals to determine its current position. Alternatively or additionally, the navigation component 156 may include a radio navigation receiver for receiving navigation beacons or other signals from radio nodes (e.g., base station 105) (such as Wi-Fi access points, cellular network sites, radio stations, remote computing devices, other vehicles, etc.). Under the control of the drive control component 154, the processor 131 may control the vehicle 110a to navigate and maneuver. The processor 131 and / or the navigation component 156 may be configured to communicate with a remote computing device (e.g., a server) over a network (e.g., the Internet) using a wireless communication link to receive commands for controlling maneuvers, receive data useful for navigation, provide real-time position reports, and evaluate other data.

[0049] Although the UE 130 is described as including separate components, in some embodiments, some or all of the components (e.g., the processor 131, the memory 133, the radio module 135, the input module 137, and / or the output module 139) may be integrated in a single device or module (such as a System-on-Chip (SOC) processing device). Such an SOC processing device may be configured to be used in a vehicle and be configured to, for example, have processor-executable instructions executed in the processor 131 to perform the operations of various embodiments.

[0050] In various embodiments, the control unit 140 of the base station 105 and the UE 130 of the vehicle 110a may use Vehicle-to-Everything (V2X) communication to exchange radar-available vehicle information. The radar-available vehicle information may include:

[0051] · Location / speed / travel direction / lane index;

[0052] · Transmission direction / polarity / power, reception sensitivity / polarity / post-processing capability of each radar system;

[0053] · Waveforms and related parameters (e.g., duty cycle, frequency range, and / or chirp type) supported by each radar system; and /

[0054] or

[0055] · Radar spatio-temporal-frequency precoding capability.

[0056] V2X is a technology that allows a vehicle to communicate with the moving parts around it in a transportation system. By using different waveforms, duty cycles, frequency ranges, chirp types, timing, and other techniques, providing radar-available vehicle information to other vehicles can help these vehicles avoid interference. In this way, other vehicles can adopt more effective countermeasures.

[0057] Various embodiments relate to how the UE 130 can send and / or indicate a radar signal configuration for other vehicles to avoid and / or better mitigate interference. Specifically, the UE 130 can be configured to send radar signal information including one or more parameters, and the one or more parameters include:

[0058] · Time / frequency resources;

[0059] · Waveform, duty cycle, and start point;

[0060] · Transmission power;

[0061] · Space / time / frequency precoding information;

[0062] · Beam scanning pattern (e.g., clockwise / counterclockwise / selected beam); and / or

[0063] · Indication regarding immediate termination of transmission.

[0064] In addition, various embodiments can be configured to separately send the above radar signal information for different components via different RRC, MAC-CE, DCI, or SCI. For example:

[0065] · Different radar sensors installed on different sides (left / right / front / rear / top / bottom) of vehicles 110a, 110b.

[0066] · Different polarization types.

[0067] · Different waveforms (pulse / FCW / PMCW) used / supported by the radar.

[0068] o This can further depend on the supported duty cycle and start point.

[0069] o For pulses, it can further depend on the duty cycle and the inter-pulse interval.

[0070] o For FMCW, it can further depend on different chirp types (up / down).

[0071] · Different supported levels of the maximum transmission power.

[0072] Furthermore, each embodiment may be configured to transmit the above radar signal information based on more than one set of DCI or SCI. The DCI is sent by the base station to the UE and may be used to schedule downlink / uplink data transmission and convey necessary configurations. Different DCI formats may correspond to different transmission modes. In contrast, the SCI may carry information that the receiving UE needs to receive and demodulate transmissions on the physical side link control channel (PSCCH).

[0073] The different DCI / SCI sets may also include:

[0074] · Different DCIs / SCIs identified by different synchronization signals (SS), radio network temporary identifiers, or other control information formats, where each of these formats corresponds to a different radar component of the second radar system, and the different radar components may be associated with the different components discussed above;

[0075] · The DCI / SCI may be carried by PDCCH / PDSCH / PSCCH / PSSCH;

[0076] · The DCI / SCI may specify radar signal transmission parameters until the next DCI / SCI is detected; and

[0077] · The PxCCH / PxSCH for detecting such DCI / SCI may be semi-persistent scheduling (SPS) configured, and additionally, if the UE does not receive such DCI / SCI, radar signal transmission associated with the DCI / SCI should be avoided until the next DCI / SCI is successfully detected.

[0078] Each embodiment may be implemented within various traffic control systems, another example of which is shown in Figure 1B as traffic control system 101. Referring to Figure 1B , the first vehicle 110a1 is shown traveling on road 11 as part of the first small group of vehicles 110a2, 110a3. In addition, the second small group B is traveling on the same road 11, a certain distance in front of the first small group A.

[0079] In some embodiments, the base station 105 may be configured to send the above radar signal information based on DCI / SCI in group common (GC) communication (GC-DCI / GC-SCI). For example, different UEs (e.g., 110a1, 110a2, 110a3) may be configured to monitor different fields in the same GC-DCI / GC-SCI to identify their respective radar signal transmission parameters. Thus, the GC-DCI / GC-SCI may include UE-specific fields (e.g., ID#1, ID#2, ID#3), which may indicate starting point offset, frequency range, precoding information, etc. In addition, the GC-DCI / GC-SCI (e.g., GC-DCI / GC-SCI#1, GC-DCI / GC-SCI#2) may include a common information field, which indicates common information (e.g., duty cycle, waveform, power) for all UEs that monitor group common communication for the information. Further, the GC-DCI / GC-SCI may include a radio network temporary indicator field index (i.e., RNTI / field index), where groups A and B may use this index to identify the GC-xCI designated for the group.

[0080] Various embodiments relate to which radar signal interference information a UE can send and / or indicate to other vehicles, which can help mitigate inevitable radar signal interference. The UE may be configured to send radar signal information including one or more parameters for improving radar signal reception. Such parameters may include:

[0081] · Physical information of the interfering vehicle / radar, such as:

[0082] o Location (e.g., GPS information / grid index),

[0083] o Location of the interfering radar on the vehicle (e.g., left / right / front / rear), and / or

[0084] o Polarization of the interfering radar; and / or

[0085] · Interfering radar signal parameters, including:

[0086] o Waveform (pulse / FMCW / PMCW),

[0087] o Time domain: duty cycle, starting point, pulse / scan duration,

[0088] o Frequency domain: frequency range, FH mode,

[0089] o Spatial domain: QCL information / TCI status, PMI, RS information; and / or

[0090] o Code domain: code length or code width.

[0091] Each embodiment may use one or more conventional countermeasures to reduce and / or avoid this type of radar interference. Such countermeasures include:

[0092] · Constant false alarm rate (CFAR) monitoring for interference mitigation;

[0093] · Detecting interference and changing the transmit frequency range of the chirp;

[0094] · Using random length pauses between chirps or pulses;

[0095] · Applying predefined frequency band separation specific to the direction of travel;

[0096] · Detecting interference and fixing the received (Rx) result (time domain);

[0097] · Using a random sequence of chirp types (up chirp, down chirp, CW chirp);

[0098] · Digital beamforming;

[0099] · Detecting interference and changing the timing of the transmit chirp or pulse; and / or

[0100] · Following a specific polarization for the radar position (front, back, side).

[0101] Figure 2 is a component block diagram showing an example UE 130 suitable for implementing any of the various embodiments. Each embodiment may be implemented on a number of single-processor and multi-processor computer systems including a system-on-chip (SOC) or a system-in-package (SIP).

[0102] Refer to Figure 1A-2 As shown, the example SIP 200 includes: two SOCs 202, 204, which are coupled to a clock 206; a voltage regulator 208; and a radio module 135. In some embodiments, the first SOC 202 operates as a central processing unit (CPU) of the wireless device, which executes the instructions by performing arithmetic, logical, control, and input / output (I / O) operations specified by the instructions of the software application. In some embodiments, the second SOC 204 may operate as a dedicated processing unit. For example, the second SOC 204 may operate as a dedicated 5G processing unit, which is responsible for managing high-capacity, high-speed (e.g., 5 Gbps, etc.) and / or extremely high-frequency short-wavelength (e.g., 28 GHz millimeter wave spectrum, etc.) communications.

[0103] The first SOC 202 may include a digital signal processor (DSP) 210, a modem processor 212, a graphics processor 214, an application processor 216, one or more coprocessors 218 (e.g., vector coprocessors) connected to one or more of these processors, a memory 220, custom circuitry 222, system components and resources 224, an interconnect / bus module 226, one or more temperature sensors 230, a thermal management unit 232, and a thermal power envelope (TPE) component 234. The second SOC 204 may include a 5G modem processor 252, a power management unit 254, an interconnect / bus module 264, multiple millimeter wave transceivers 256, a memory 258, and various additional processors 260 (such as application processors, packet processors, etc.).

[0104] Each of the processors 210, 212, 214, 216, 218, 252, 260 may include one or more cores, and each processor / core may perform operations independently of other processors / cores. For example, the first SOC 202 may include a processor that executes a first type of operating system (e.g., FreeBSD, LINUX, OS X, etc.) and a processor that executes a second type of operating system (e.g., MICROSOFT WINDOWS10). Additionally, any one or all of the processors 210, 212, 214, 216, 218, 252, 260 may be included as part of a processor cluster architecture (e.g., a synchronous processor cluster architecture, an asynchronous or heterogeneous processor cluster architecture, etc.).

[0105] The first SOC 202 and the second SOC 204 may include various system components, resources, and custom circuitry for managing sensor data, analog-to-digital conversion, wireless data transmission, and for performing other specialized operations such as decoding data packets and processing encoded audio and video signals for rendering in a web browser. For example, the system components and resources 224 of the first SOC 202 may include power amplifiers, voltage regulators, oscillators, phase-locked loops, peripheral bridges, data controllers, memory controllers, system controllers, access ports, timers, and other similar components for supporting processors and software clients operating on a wireless device. The system components and resources 224 and / or the custom circuitry 222 may also include circuitry for interfacing with peripheral devices such as cameras, electronic displays, wireless communication devices, external memory chips, etc.

[0106] The first SOC 202 and the second SOC 204 can communicate via the interconnect / bus module 250. The various processors 210, 212, 214, 216, 218 can be interconnected via the interconnect / bus module 226 to one or more memory elements 220, system components and resources 224, as well as custom circuits 222, and the thermal management unit 232. Similarly, the processor 252 can be interconnected via the interconnect / bus module 264 to the power management unit 254, the millimeter-wave transceiver 256, the memory 258, and various additional processors 260. The interconnect / bus modules 226, 250, 264 can include an array of reconfigurable logic gates and / or implement a bus architecture (e.g., CoreConnect, AMBA, etc.). Communication can be provided via a high-level interconnect such as a high-performance on-chip network (NoC).

[0107] The first SOC 202 and / or the second SOC 204 may also include an input / output module (not shown) for communicating with resources external to the SOC, such as the radio module 135, the sensor 150, the clock 206, and the voltage regulator 208. Resources external to the SOC (e.g., the clock 206, the voltage regulator 208) can be shared by two or more of the internal SOC processors / cores.

[0108] In addition to the example UE 130 discussed above, various embodiments can be implemented in a wide variety of computing systems, which can include a single processor, multiple processors, multi-core processors, or any combination thereof.

[0109] Figure 3 is a software architecture diagram showing a software architecture 300 suitable for implementing any of the various embodiments. The software architecture 300 includes a radio protocol stack for the user and control planes in wireless communication. Refer to Figure 1A-3, the UE 130 may implement a software architecture 300 to facilitate communication between the UE 130 and the base station 105 in a traffic control system (e.g., 100). In various embodiments, the layers in the software architecture 300 may form logical connections with corresponding layers in the software of the base station 105. The software architecture 300 may be distributed among one or more processors (e.g., processors 212, 214, 216, 218, 252, 260). Although described with respect to one radio protocol stack, in a multi-SIM (Subscriber Identity Module) wireless device, the software architecture 300 may include multiple protocol stacks, where each protocol stack may be associated with a different SIM (e.g., two protocol stacks respectively associated with two SIMs in a dual-SIM wireless communication device). Although described below with reference to LTE communication layers, the software architecture 300 may support any one of various standards and protocols for wireless communication, and / or may include additional protocol stacks that support any one of various standards and protocols for wireless communication.

[0110] The software architecture 300 may include a Non-Access Stratum (NAS) 302 and an Access Stratum (AS) 304. The NAS 302 may include functions and protocols for supporting packet filtering, security management, mobility control, session management, and services and signaling between the SIM (e.g., SIM 204) of the UE 130 and its vehicle. The AS 304 may include functions and protocols for supporting communication between the SIM (e.g., SIM 204) and entities (e.g., base stations) of the supported access network. Specifically, the AS 304 may include at least three layers (Layer 1, Layer 2, and Layer 3), where each layer may contain various sub-layers.

[0111] In the user and control planes, Layer 1 (L1) of the AS 304 may be the Physical Layer (PHY) 306, which may oversee functions for implementing transmission and / or reception over the air interface. Examples of such Physical Layer 306 functions may include Cyclic Redundancy Check (CRC) attachment, coding blocks, scrambling and descrambling, modulation and demodulation, signal measurement, MIMO, etc. The physical layer may include various logical channels (including PDCCH and PDSCH), or sidelink channels (such as PSCCH and PSSCH).

[0112] In the user and control planes, Layer 2 (L2) of the AS 304 may be responsible for the link between the UE 130 and the base station 105 above the Physical Layer 306. In various embodiments, Layer 2 may include a Medium Access Control (MAC) sub-layer 308, a Radio Link Control (RLC) sub-layer 310, and a Packet Data Convergence Protocol (PDCP) 312 sub-layer, where each forms a logical connection that terminates at the base station 105.

[0113] In the control plane, the layer 3 (L3) of AS 304 may include an RRC sub-layer 3. Although not shown, the software architecture 300 may include additional layer 3 sub-layers and various upper layers above layer 3. In various embodiments, the RRC sub-layer 313 may provide functions including broadcasting system information, paging, and establishing and releasing an RRC signaling connection between the UE 130 and the base station 105.

[0114] In various embodiments, the PDCP sub-layer 312 may provide uplink functions including multiplexing between different radio bearers and logical channels, sequence number addition, handover data handling, integrity protection, encryption, and header compression. In the downlink, the PDCP sub-layer 312 may provide functions including in-sequence delivery of data packets, duplicate data packet detection, integrity verification, decryption, and header decompression.

[0115] In the uplink, the RLC sub-layer 310 may provide segmentation and concatenation of upper layer data packets, retransmission of lost data packets, and automatic repeat request (ARQ). In the downlink, the RLC sub-layer 310 functions may include reordering of data packets to compensate for out-of-order reception, reassembly of upper layer data packets, and ARQ.

[0116] In the uplink, the MAC sub-layer 308 may provide functions including multiplexing between logical channels and transport channels, random access procedures, logical channel prioritization, and hybrid ARQ (HARQ) operations. In the downlink, the MAC layer functions may include channel mapping within a cell, demultiplexing, discontinuous reception (DRX), and HARQ operations.

[0117] Although the software architecture 300 may provide functions for sending data over a physical medium, the software architecture 300 may also include at least one host layer 314 to provide data transfer services to various applications in the UE 130. In some embodiments, the application-specific functions provided by the at least one host layer 314 may provide an interface between the software architecture and the general-purpose processor 206.

[0118] In other embodiments, the software architecture 300 may include one or more higher logical layers (e.g., transport, session, presentation, application, etc.) that provide host layer functionality. For example, in some embodiments, the software architecture 300 may include a network layer (e.g., Internet Protocol (IP) layer) where logical connections terminate at a Packet Data Network (PDN) Gateway (PGW). In some embodiments, the software architecture 300 may include an application layer where logical connections terminate at another device (e.g., an end-user device, a server, etc.). In some embodiments, the software architecture 300 may also include a hardware interface 316 between the physical layer 306 and communication hardware (e.g., one or more Radio Frequency (RF) transceivers) in the AS 304.

[0119] Figure 4 is a component block diagram showing a system 400 configured for radar interference management according to various embodiments. In some embodiments, the system 400 may include a UE 130 and / or one or more base station control units 140. The system 300 may also include a base station control unit 140, which may be part of a traffic management system configured to assist the UE 130 in improving radar interference mitigation and / or avoidance.

[0120] The UE 130 may also include a memory 133 (i.e., an electronic storage device), one or more processors 131, and / or other components such as a radar system 444. The UE 130 may also include communication lines or ports (such as a radio module 135) to enable information exchange with a network and / or other computing platforms (such as the base station control unit 140). Figure 1A The illustration of the UE 130 in is not intended to be limiting. The UE 130 may include multiple hardware, software, and / or firmware components that operate together to provide the functionality attributed to the UE 130 herein. For example, the UE 130 may be coupled to a vehicle radar system 444, which is configured to generate radar transmissions and receive the resulting returned radar signals.

[0121] The base station control unit 140 may include a memory 143 (i.e., an electronic storage device), one or more processors 141, and / or other components such as a sensor 160. The UE 130 may also include communication lines or ports (such as a transceiver 145) to enable information exchange with a network and / or other computing platforms (such as the UE 130). Figure 4The illustration of control unit 140 in [description] is not intended to be limiting. Control unit 140 may include multiple hardware, software, and / or firmware components that operate together to provide the functionality attributed to base station control unit 140 herein. For example, control unit 140 may be coupled to station radar system 454, which is configured to generate radar transmissions and receive the resulting returned radar signals.

[0122] External resource 420 includes a remote server that may receive, such as via communication network 50 in a download manner, radar transmission configuration information or radar reception interference information regarding radar signals from a radar system of a vehicle having a UE. External resource 420 may receive radar transmission configuration information or radar reception interference information of various vehicles via multiple UEs.

[0123] Memories 133, 143 may include non-transitory computer-readable media that electronically store information. The electronic storage media of memories 133, 143 may include one or both of the following: system storage devices provided integrally (i.e., substantially non-removably) with UE 130 or base station control unit 140, respectively; and / or removable storage devices removably connected thereto. For example, ports (e.g., universal serial bus (USB) ports, FireWire ports, etc.) or drives (e.g., disk drives, etc.). Memories 133, 143 may include one or more of the following: optically readable storage media (e.g., optical discs, etc.), magnetically readable storage media (e.g., magnetic tapes, magnetic hard disk drives, floppy disk drives, etc.), charge-based storage media (e.g., EEPROM, RAM, etc.), solid-state storage media (e.g., flash drives, etc.), and / or other electronically readable storage media. Memories 133, 143 may include one or more virtual storage resources (e.g., cloud storage, virtual private networks, and / or other virtual storage resources). Memories 133, 143 may store software algorithms, information determined by processors 131, 141, and information received from UE 130 or base station control unit 140, respectively, that enable UE 130 or base station control unit 140 to operate as described herein.

[0124] The processors 131 and 141 may be configured to provide information processing capabilities in the UE 130 or the base station control unit 140, respectively. Accordingly, the processors 131 and 141 may include one or more of the following: a digital processor, an analog processor, a digital circuit designed to process information, an analog circuit designed to process information, a state machine, and / or other mechanisms for electronically processing information. Although the processors 131 and 141 are shown as a single entity, this is for illustrative purposes only. In some implementations, the processors 131 and 141 may include multiple processing units. These processing units may be physically located within the same device, or the processors 131 and 141 may represent the processing functions of multiple devices that are remote and / or local relative to each other and operate in coordination.

[0125] The UE 130 may be configured by machine-readable instructions 435, which may include one or more instruction modules. The instruction modules may include computer program modules. Specifically, the instruction modules may include one or more of the following: a wireless communication control message receiving module 440, a radar transmission configuration information or radar reception interference information usage module 442 (i.e., a radar Tx configuration information or radar Rx interference information usage module 442), and / or other instruction modules.

[0126] The wireless communication control message receiving module 440 may be configured to receive, at the UE 130, a wireless communication control message from the control unit 140 of the base station, the wireless communication control message including radar transmission configuration information or radar reception interference information regarding a radar signal from a radar system of another vehicle having another UE. The wireless communication control message may include one of the following: a radio resource control (RRC) message, a media access control-control element (MAC-CE), downlink control information (DCI), or sidelink control information (SCI). The DCI or SCI may be carried by one of the following: a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical sidelink control channel (PSCCH), or a physical sidelink shared channel (PSSCH). In addition, the wireless communication control message may include radar transmission configuration information, which includes a modified radar transmission configuration for use in operating a first radar system to avoid interference with radar signals from a second radar system of a second vehicle. The wireless communication control message may include radar transmission configuration information for use in operating a first radar system, which may include at least one of the following:

[0127] · Time or frequency resources,

[0128] · Waveform, duty cycle, or start point,

[0129] · Transmission power,

[0130] · Spatial, temporal, or frequency precoding information, and / or

[0131] · Beam scanning pattern.

[0132] In some embodiments, the wireless communication control message may include an indication that the first vehicle should immediately terminate radar transmission.

[0133] In some embodiments, the wireless communication control message may be one of a DCI or an SCI, where the DCI or the SCI includes radar transmission configuration information for use in managing radar transmissions by the first radar system to minimize interference with multiple radar components. The multiple radar components may be at least one of the following cases:

[0134] · Radar components of the second radar system are mounted at different positions on the second vehicle,

[0135] · Transmissions are made using different polarization types,

[0136] · Transmissions are made using different waveforms for radar transmissions by radar components of the second radar system, and / or

[0137] · Transmissions are made using different support levels of the maximum transmission power of radar components of the second radar system.

[0138] In some embodiments, the wireless communication control message may be transmitted via multiple RRC configurations or MAC-CE messages or a set of DCIs or SCIs, including at least one of the following:

[0139] · Different sets of DCIs or SCIs are distinguished using different synchronization signals (SSs), radio network temporary identifiers, or other control information formats, where each of these formats corresponds to a different radar component of the second radar system,

[0140] · Different sets of DCIs or SCIs are carried by different ones of the following: Physical Downlink Control Channel (PDCCH), Physical Downlink Shared Channel (PDSCH), Physical Sidelink Control Channel (PSCCH), or Physical Sidelink Shared Channel (PSSCH), and / or

[0141] · Different sets of DCIs or SCIs specify semi-persistent radar signal transmission parameters for use by the first radar system of the first vehicle until the next set of DCI or SCI is received.

[0142] In some embodiments, multiple RRC configurations or MAC-CE messages or DCI or SCI sets are respectively associated with different radar components of the first radar system, including:

[0143] · being installed at different positions on a second vehicle of the radar component;

[0144] · being transmitted using different polarization types;

[0145] · transmitting different waveforms for radar transmissions by radar components of the second radar system; and / or

[0146] · being transmitted at different transmit power levels.

[0147] In some embodiments, the wireless communication control message is one of DCI or SCI, and DCI or SCI includes radar reception interference information for use when processing signals received by the first radar system corresponding to more than one radar component of the second radar system. The radar reception interference information includes at least one of the following:

[0148] · different installation positions of the radar components of the second radar system on the second vehicle;

[0149] · different polarization types of the radar components of the second radar system;

[0150] · different waveforms for radar transmissions by radar components of the second radar system; and / or

[0151] · different supported levels of the maximum transmission power of the radar components of the second radar system.

[0152] In some embodiments, the wireless communication control message may include radar transmission configuration information, which is part of group common communication to a group of UEs (including UE 130) in a group of vehicles. The fields within the group common communication may correspond to a specific UE in the group of UEs and identify the radar signal transmission parameters of the radar system to be used to manage the corresponding vehicle within the group of vehicles. Additionally, the group common communication may include common fields that identify the radar signal transmission parameters to be used to manage all radar systems in the group of vehicles.

[0153] In some embodiments, the wireless communication control message may include radar reception interference information, which includes radar reception parameters configured such that the radar coupled to UE 130 can mitigate radar reception interference from radar signals of a radar system of another vehicle. The radar reception parameters include at least one of the position of a UE of the other vehicle or the radar signal parameters of a UE of the other vehicle.

[0154] By way of non-limiting example, the unit of machine-readable instructions 435 for implementing the wireless communication control message receiving module 440 may include a processor (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a processing device (e.g., 130, 140), which may use the memories 133, 143, external resources 420, and / or one or more sensors (e.g., vehicle radar system 444).

[0155] The radar transmission configuration information or radar reception interference information usage module 442 may be configured to manage the operation of the first radar system using the radar transmission configuration information or radar reception interference information received from the base station control unit 140. The radar transmission configuration information or radar reception interference information usage module 442 may manage the operation of the first radar system using the radar transmission configuration information or radar reception interference information received from the base station control unit 140, such as pausing radar transmission until the next DCI or SCI is received in response to not receiving a DCI or SCI. For example, the radar transmission configuration information or radar reception interference information usage module 442. By way of non-limiting example, the unit of machine-readable instructions 435 for implementing the radar transmission configuration information or radar reception interference information module 442 may include a processor (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a processing device (e.g., 130, 140), which may use the memories 133, 143, external resources 420, and / or one or more sensors (e.g., radar system 444).

[0156] The base station control unit 140 may be configured by machine-readable instructions 436, which may include one or more instruction modules. The instruction modules may include computer program modules. Specifically, the instruction modules may include one or more of a radar transmission configuration information or radar reception interference information determination module 450 (i.e., a radar Tx configuration information or radar Rx interference information determination module 450), a wireless communication control message sending module 452, and / or other instruction modules.

[0157] The radar transmission configuration information or radar reception interference information determination module 450 may be configured to determine radar transmission configuration information or radar reception interference information useful for a radar system of a vehicle in which the UE 130 is located or incorporated. In some embodiments, the radar transmission configuration information or radar reception interference information may include one of the following: a radio resource control (RRC) message, a media access control - control element (MAC - CE), downlink control information (DCI), or sidelink control information (SCI). The DCI or SCI may be carried by one of the following: a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical sidelink control channel (PSCCH), or a physical sidelink shared channel (PSSCH). Additionally, the radar transmission configuration information or radar reception interference information may include radar transmission configuration information, which includes a modified radar transmission configuration for use in operating a first radar system to avoid interference with radar signals from a second radar system of a second vehicle. The radar transmission configuration information or radar reception interference information may include radar transmission configuration information for use in operating a first radar system, which may include at least one of the following:

[0158] · Time or frequency resources,

[0159] · Waveform, duty cycle, or starting point,

[0160] · Transmission power,

[0161] · Spatial, temporal, or frequency precoding information, and / or

[0162] · Beam scanning pattern.

[0163] Alternatively or additionally, the radar transmission configuration information or radar reception interference information may include an indication that the first vehicle should immediately terminate radar transmission.

[0164] In some embodiments, the radar transmission configuration information or radar reception interference information may be one of DCI or SCI, and the DCI or SCI includes radar transmission configuration information for use in processing signals received by the first radar system corresponding to more than one radar component of the second radar system. The radar transmission configuration information or radar reception interference information may include at least one of the following:

[0165] · Different installation positions of the radar components of the second radar system on the second vehicle,

[0166] · Different polarization types of the radar components of the second radar system,

[0167] · Different waveforms for radar transmissions by radar components of a second radar system, and / or

[0168] · Different supported levels of the maximum transmission power of the radar components of the second radar system.

[0169] In some embodiments, radar transmission configuration information or radar reception interference information may be conveyed by multiple sets of DCI or SCI, including at least one of the following:

[0170] · Different sets of DCI or SCI are differentiated using different synchronization signals (SS), radio network temporary identifiers, or other control information formats, where each of these formats corresponds to a different radar component of the second radar system,

[0171] · Different sets of DCI or SCI are carried by different ones of the following: Physical Downlink Control Channel (PDCCH), Physical Downlink Shared Channel (PDSCH), Physical Sidelink Control Channel (PSCCH), or Physical Sidelink Shared Channel (PSSCH), and / or

[0172] · Different sets of DCI or SCI specify semi-persistent radar signal transmission parameters for a first radar system of a first vehicle to be used until the next set of DCI or SCI is received.

[0173] In some embodiments, radar transmission configuration information or radar reception interference information may include radar transmission configuration information that is part of group common communication to a group of UEs (including UE 130) in a group of vehicles. Fields within the group common communication may correspond to specific UEs in the group of UEs and identify radar signal transmission parameters for the radar system of the corresponding vehicle to be used to manage the corresponding vehicle within the group of vehicles. Additionally, the group common communication may include common fields that identify radar signal transmission parameters to be used to manage all radar systems in the group of vehicles.

[0174] In some embodiments, radar transmission configuration information or radar reception interference information may include radar reception interference information that includes radar reception parameters configured such that a radar coupled to UE 130 can mitigate radar reception interference from radar signals of a radar system of another vehicle, the radar reception parameters including at least one of the location of a UE of the other vehicle or the radar signal parameters of a UE of the other vehicle.

[0175] By way of non - limiting example, the units of machine - readable instructions 436 for implementing the radar transmission configuration information or radar reception interference information determination module 450 can include processors (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a processing device (e.g., 130, 140), which can use memories 133, 143, external resources 420, and / or one or more sensors (e.g., the station radar system 454).

[0176] The wireless communication control message sending module 452 can be configured to send a wireless communication control message including the determined radar transmission configuration information or radar reception interference information to the UE 130 of the vehicle. By way of non - limiting example, the units of machine - readable instructions 436 for implementing the wireless communication control message sending module 452 can include processors (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a processing device (e.g., 130, 140), which can use memories 133, 143, external resources 420, and / or one or more sensors (e.g., the station radar system 454).

[0177] The UE 130 can include one or more processors configured to execute computer program modules similar to the computer program modules in the machine - readable instructions 436 of the above - mentioned base station control unit 140. Similarly, a given base station control unit 140 can include one or more processors configured to execute computer program modules similar to the computer program modules in the machine - readable instructions 435 of the above - mentioned UE 130.

[0178] The processors 131, 141 can be configured to execute modules 440, 442, 450, and / or 452 and / or other modules. The processors 131, 141 can be configured to execute modules 440, 442, 450, and / or 452 and / or other modules by software; hardware; firmware; some combination of software, hardware, and / or firmware; and / or other mechanisms for configuring the processing capabilities on the processors 131, 141. As used herein, the term "module" can refer to any component or collection of components that performs the functions attributed to that module. This can include one or more physical processors, processor - readable instructions, circuits, hardware, storage media, or any other component during the execution of processor - readable instructions.

[0179] The following description of the functions provided by different modules 440, 442, 450, and / or 452 is for illustrative purposes and is not intended to be limiting, because any one of modules 440, 442, 450, and / or 452 may provide more or fewer functions than those described. For example, one or more of modules 440, 442, 450, and / or 452 may be removed, and some or all of their functions may be provided by the other ones of modules 440, 442, 450, and / or 452. As another example, processors 131, 141 may be configured to execute one or more additional modules, which may execute some or all of the functions attributed to one of modules 440, 442, 450, and / or 452 below.

[0180] Figure 5 Operations of a method 500 for radar interference management executed by a processor of a UE according to various embodiments are shown. In some embodiments, method 500 may be implemented using one or more additional operations not described, and / or may be implemented without one or more of the operations discussed. Referring Figure 1A-5 to, the operations of method 500 may be implemented in one or more processors (e.g., a digital processor, an analog processor, a digital circuit designed to process information, an analog circuit designed to process information, a state machine, and / or other mechanisms for electronically processing information) in response to instructions stored electronically on an electronic storage medium of the UE. The one or more processors may include one or more devices configured by hardware, firmware, and / or software to be specifically designed to execute one or more operations of method 500. For example, the operations of method 500 may be performed by a processor (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a UE (e.g., 130).

[0181] In block 521, the processor of the UE may perform operations including: receiving, at a first UE, a wireless communication control message from a base station, the wireless communication control message including radar transmission configuration information or radar reception interference information about a radar signal from a second radar system of a second vehicle having a second UE. In block 521, the processor of the UE may use a wireless communication control message receiving module (e.g., 440). For example, the processor may receive one or more of the above wireless communication control messages. In some embodiments, the unit for performing the operations of block 521 may include a processor (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a processing device (e.g., 130, 140), which may use a memory 133, 143, an external resource 420, and / or a radio module 135.

[0182] In some embodiments, the wireless communication control message received in block 521 may be or include one of an RRC message, a MAC-CE, a DCI, or an SCI.

[0183] In some embodiments, the wireless communication control message received in block 521 may be a DCI or SCI message carried by one of a PDCCH, a PDSCH, a PSCCH, or a PSSCH.

[0184] In some embodiments, the wireless communication control message received in block 521 may include radar transmission configuration information and include a modified radar transmission configuration for use in operating the first radar system to avoid interference with radar signals from a second radar system of a second vehicle.

[0185] In some embodiments, the wireless communication control message received in block 521 may include radar transmission configuration information that includes a modified radar transmission configuration for use in operating the first radar system to avoid interference with radar signals from a second radar system of a second vehicle.

[0186] In some embodiments, the wireless communication control message received in block 521 may include radar transmission configuration information for use in operating the first radar system, which includes at least one of the following: time or frequency resources; waveform, duty cycle, or start point; transmission power; spatial, temporal, or frequency precoding information; or beam scanning pattern.

[0187] In some embodiments, the wireless communication control message received in block 521 may include an indication that the first vehicle should immediately terminate radar transmission.

[0188] In some embodiments, the wireless communication control message received in block 521 may be one of a DCI or an SCI that includes radar transmission configuration information for use in processing signals received by the first radar system corresponding to more than one radar component of a second radar system. The radar transmission configuration information or radar reception interference information may include at least one of the following: different mounting positions of the radar components of the second radar system on the second vehicle; different polarization types of the radar components of the second radar system; different waveforms for radar transmission by the radar components of the second radar system; and / or different supported levels of the maximum transmit power of the radar components of the second radar system.

[0189] In some embodiments, the wireless communication control message received in block 521 may be transmitted via multiple DCI or SCI sets, including at least one of the following: different DCI or SCI sets are differentiated using different synchronization signals (SS), radio network temporary identifiers, or other control information formats, where each of these formats corresponds to a different radar component of the second radar system; different DCI or SCI sets are carried via different ones of the following: physical downlink control channel (PDCCH), physical downlink shared channel (PDSCH), physical sidelink control channel (PSCCH), or physical sidelink shared channel (PSSCH); and / or different DCI or SCI sets specify semi-persistent radar signal transmission parameters for a first radar system of a first vehicle to use until a next DCI or SCI set is received.

[0190] In some embodiments, the wireless communication control message received in block 521 may include radar transmission configuration information that is part of group common downlink control information (GC-DCI) destined for a group of UEs including a first UE in a group of vehicles. Fields within the GC-DCI may correspond to a particular UE within the group of UEs and identify radar signal transmission parameters for a radar system of the corresponding vehicle to be used to manage the corresponding vehicle within the group of vehicles. In some embodiments, the GC-DCI may include a common field that identifies radar signal transmission parameters to be used to manage all radar systems within the group of vehicles.

[0191] In some embodiments, the wireless communication control message received in block 521 may include radar reception interference information that includes radar reception parameters configured such that a radar coupled to a first UE can mitigate radar reception interference from a radar signal of a second radar system of a second vehicle, the radar reception parameters including at least one of a position of the second vehicle or radar signal parameters of the second radar system.

[0192] In block 523, a processor of the UE may perform operations including the following: manage the operation of the first radar system using radar transmission configuration information or radar reception interference information received from the base station. In block 523, a processor of the user equipment may use a module (e.g., 442) with the radar transmission configuration information or radar reception interference information. In some embodiments, the unit for performing the operations of block 523 may include a processor (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a processing device (e.g., 130, 140), which may use memories 133, 143, external resources 420, and / or one or more sensors (e.g., vehicle radar system 444).

[0193] In some embodiments, the wireless communication control message may be one of DCI or SCI, and in block 523, the processor may suspend radar transmission in response to not receiving DCI or SCI in block 521 until the next DCI or SCI is received in block 521.

[0194] In some embodiments, the processor may repeat any or all of the operations in blocks 521 and 523 to perform radar interference management repeatedly or continuously.

[0195] In Figure 6A and 6B illustrate operations of methods 600 and 601 for radar interference management performed by a processor of a base station UE according to various embodiments. In some embodiments, method 600 may be implemented with one or more additional operations not described, and / or may be implemented without one or more of the operations discussed. Referring to Figure 1A-6A 、6B、6C, may be implemented in one or more processors (e.g., digital processors, analog processors, digital circuits designed to process information, analog circuits designed to process information, state machines, and / or other mechanisms for processing information electronically) of the base station in response to instructions stored electronically on an electronic storage medium. For example, referring to Figure 1A-6A 、6B、6C, the operations of methods 600、601 may be performed by a processor (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a base station (e.g., 140).

[0196] Referring to Figure 6A, in block 621, a processor of the base station may perform operations including the following: determining radar transmission configuration information or radar reception interference information useful for a first radar system of a first vehicle having a first UE. In block 621, the processor of the base station may use a radar transmission configuration information or radar reception interference information determination module (e.g., 450). In some embodiments, the unit for performing the operations of block 621 may include a processor (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a processing device (e.g., 130, 140), which may use a memory 133, 143, an external resource 420, and / or a station radar system (e.g., 454).

[0197] In some embodiments, the processor of the base station may determine radar reception interference information including radar reception parameters configured such that the first radar system can mitigate radar reception interference from radar signals of a second radar system of a second vehicle, the radar reception parameters including at least one of the position of the second vehicle or the radar signal parameters of the second radar system.

[0198] In some embodiments, the processor of the base station may determine radar transmission configuration information for use in operating the first radar system, including at least one of the following: time or frequency resources; waveform, duty cycle, or start point; transmission power; spatial, temporal, or frequency precoding information; or beam scanning pattern.

[0199] In some embodiments, the processor of the base station may determine that the radar system associated with a particular vehicle should stop radar transmission for some reason, and generate radar reception interference information in the form of an indication that the first vehicle should immediately terminate radar transmission.

[0200] In some embodiments, the processor of the base station may determine radar transmission configuration information for use in processing signals received by the first radar system corresponding to more than one radar component of a second radar system of a second vehicle. In such embodiments, the processor may determine at least one of the following: different mounting positions of the radar components of the second radar system on the second vehicle; different polarization types of the radar components of the second radar system; different waveforms for radar transmission by the radar components of the second radar system; and / or different supported levels of the maximum transmit power of the radar components of the second radar system.

[0201] In some embodiments, a processor of a base station may determine radar reception interference information including radar reception parameters, where the radar reception parameters are configured such that a first radar system can mitigate radar reception interference from radar signals of a second radar system of a second vehicle, and the radar reception parameters include at least one of a position of the second vehicle or radar signal parameters of the second radar system.

[0202] In block 623, a processor of a base station may perform operations including: sending a wireless communication control message to a first UE of a first vehicle, the wireless communication control message including the determined radar transmission configuration information or radar reception interference information. In block 623, the processor of the base station may use a wireless communication control message sending module (e.g., 452). In some embodiments, the unit for performing the operations of block 623 may include a processor (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a processing device (e.g., 130, 140), which may use memories 133, 143, external resources 420, and / or a transceiver (e.g., 145).

[0203] In some embodiments, a processor of a base station may send the wireless communication control message as one of an RRC message, a MAC-CE, a DCI, or an SCI.

[0204] In some embodiments, a processor of a base station may send a DCI or an SCI in one of a PDCCH, a PDSCH, a PSCCH, and / or a PSCCH.

[0205] In some embodiments, a processor of a base station may send the determined radar transmission configuration information or radar reception interference information in multiple DCI or SCI sets, including at least one of the following: different DCI or SCI sets are differentiated by different synchronization signals (SSs), radio network temporary identifiers, or other control information formats, where each of these formats corresponds to a different radar component of the second radar system; different DCI or SCI sets are carried by different ones of the following: a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical sidelink control channel (PSCCH), or a physical sidelink shared channel (PSSCH); and / or different DCI or SCI sets specify semi-persistent radar signal transmission parameters for a first radar system of a first vehicle to use until a next DCI or SCI set is received.

[0206] In some embodiments, the processor may repeat any or all of the operations in blocks 621 and 623 to perform radar interference management repeatedly or continuously.

[0207] Figure 6B Method 601 is shown that can be performed together with method 600 or as an enhancement to method 600, and is used to provide radar transmission configuration information or radar reception interference information to a group of vehicles traveling together.

[0208] In block 624, the processor of the base station may perform operations including the following: determining radar transmission configuration information or radar reception interference information for a group of vehicles. As in block 621, the processor may determine radar transmission configuration information or radar reception interference information for each vehicle in the group (i.e., individually).

[0209] In block 626, the processor of the base station may reduce wireless traffic by: using group common control communication to send the radar transmission configuration information or radar reception interference information determined for each vehicle in the group, and the group common control communication is a single control message including a field for information for each UE in the group of vehicle UEs. Each UE-specific field may include radar signal transmission parameters for use when managing the radar system of the corresponding vehicle within the group of vehicles. Similar to method 600, the processor of the base station control unit may use a radar transmission configuration information or radar reception interference information determination module (e.g., 450) in block 624, and use a wireless communication control message sending module (e.g., 452) in block 626. In some embodiments, the unit for performing the operations of block 626 may include a processor (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a processing device (e.g., 130, 140), which may use a memory 133, 143, an external resource 420, a radio module 135, and / or a vehicle radar system 444. After the operation in block 626, in block 624, the processor may determine radar transmission configuration information or radar reception interference information useful for the first radar system of the first vehicle having the first UE.

[0210] The processor may repeat the operations in blocks 624 and 626 to repeatedly or continuously perform radar interference management.

[0211] In some embodiments, the processor of the base station may configure the group common control communication to include a common field that identifies radar signal transmission parameters to be used for managing all radar systems in the group of vehicles.

[0212] Each embodiment may also be useful in applications where the vehicle radar system does not transmit radar pulses but instead receives radar signals transmitted by a separate and spatially removed transmitter. In a configuration known as bistatic radar, the bistatic radar receiver detects objects in its vicinity by receiving and analyzing radar signals that have been transmitted by a bistatic radar transmitter. Unlike conventional radar, where object detection is accomplished by transmitting RF energy pulses and recording the time at which the reflection of that energy is received, the bistatic radar receiver detects objects by analyzing the received signals while monitoring the RF signals transmitted by a different transmitter.

[0213] The radio waves traveling between the transmitter and the receiver interact with the environment, including bouncing off nearby objects between the transmitter and the receiver. Thus, the bistatic radar receiver will receive the direct transmission signal (i.e., the signal that travels directly between the transmitter and the receiver without passing through or reflecting from an object) as well as signals that have been reflected from an object at an angle to the direct path. The radar signal received after reflection from an object will arrive later than the direct transmission signal due to the longer path link that the radio wave follows. The path lengths of the reflected and refracted radar signals can be determined by dividing the time interval between the reception of the direct path signal and the reflected signal by the speed of light. Then, trigonometry and analysis of the received waveform can be used to determine the approximate location of such an object. Since the process of reflecting and refracting RF signals can affect the signals observed by the bistatic radar receiver, further information can be obtained by analyzing the received waveform. By enabling multiple vehicle radar systems to perform object detection by receiving radar signals transmitted by a single bistatic radar transmitter, bistatic radar technology offers the advantage of minimizing the amount of radar RF radiation transmitted within a given area.

[0214] A vehicle radar system using bistatic radar technology can be equipped with a bistatic radar receiver configured to detect objects based on processing of radar signals received from a roadside bistatic radar transmitter. For example, the bistatic radio transmitter can be positioned at various locations along a road, enabling a motor vehicle to detect objects along the road by analyzing the received bistatic radar signals and reflected signals.

[0215] Interference with bistatic radars can occur in a hybrid deployment where some vehicles are equipped with monostatic radars and some vehicles are equipped with bistatic radar receivers. Such interference can occur when a vehicle bistatic radar receiver receives and processes both bistatic radar signals and direct radar pulses from vehicles equipped with monostatic radars. The pulses transmitted by a monostatic radar can be powerful because such a radar needs to detect objects that do not strongly reflect RF energy (e.g., people, trees, concrete barriers, etc.), and thus needs to transmit pulses with sufficient energy to distinguish the reflected signal from background RF noise. Thus, conventional radar pulses can travel long distances and generate large signals on bistatic radar receivers within the transmitted beam.

[0216] This is shown in Figure 7A wherein Figure 7A a scenario is shown where a first vehicle 110a equipped with a bistatic radar receiver attempts to distinguish an object (e.g., a person 5) in front of the vehicle based on analyzing signals received from a bistatic radar transmission 710 from a remote bistatic radar transmitter (i.e., base station 105), while the first vehicle 110a is being irradiated with radar pulses from a conventional radar of a second vehicle 110b that may cause interference 720. In a hybrid deployment, this interference would be undesirable if it cannot be avoided.

[0217] Some embodiments can utilize the infrastructure and communication methods described herein and the listen-before-talk techniques used in some 5G applications to enable a bistatic radar transmitter to generate radar signals that can compensate for interference that may be received by a nearby bistatic radar receiver. Despite direct radar interference, a bistatic radar transmitter can use various methods to generate radar signals that can be received and provide useful information as long as accurate information about characteristics (e.g., RF frequency, waveform, polarity, signal pattern, pulse rate, etc.) and received power levels is known. These embodiments use the concepts of listen-before-talk and listen-before-respond to provide this information to the bistatic radar transmitter. Specifically, the bistatic radar transmitter and the vehicle bistatic radar receiver can use the listen-before-talk concept to provide the bistatic radar transmitter of the device with direct measurements of the radar signals by the vehicle bistatic radar receiver, such that such information can be used to adjust and / or time the transmission of direct radar signals, enabling the vehicle radar system to detect objects (regardless of or in the presence of such interference).

[0218] As Figure 7B and Figure 7CAs shown, the bistatic radar transmitter transmits a listen-before-talk (LBT in these figures) trigger signal 730 that the bistatic radar receiver is configured to detect. This trigger signal indicates to the bistatic radar receiver that the receiver should monitor received RF signals during a listen-before-respond (LBR) interval 730 to measure the RF environment and in particular measure the reception of RF signals (such as direct radar pulses 760 from a second vehicle 110b) that will interfere with the processing of the received bistatic radar signal, and report information characterizing the received detected interfering RF signals to the bistatic radar transmitter in an LBR feedback message 740 sent at a fixed time after the trigger signal (e.g., at the LBR interval shown in Figure 7C . Thus, this trigger-monitor-report sequence enables the vehicle bistatic radar receiver to provide the bistatic radar transmitter with the information it needs to adjust the radar signals it transmits. After receiving and processing interference information messages from one or more vehicle radar systems, the bistatic radar transmitter may transmit continuous wave or pulsed radar signals 750 that the vehicle bistatic radar receiver may receive and process for object detection purposes.

[0219] In some deployments, the bistatic radar transmitter may be collocated with and / or include the functionality of a base station that performs signaling operations (i.e., transmits the listen-before-talk trigger and receives the interference information message). Thus, in such deployments, the base station and the transmitter may be the same device or system. In other deployments, the bistatic radar transmitter may be located at various positions optimized for radar purposes, while a base station along the road provides signaling operations (i.e., transmits the listen-before-talk trigger and receives the interference information message) and passes the interference information as well as the radar transmission timing to the appropriate bistatic radar transmitter (i.e., the transmitter positioned to direct the radar signal towards the vehicle radar system that sent a given interference information message).

[0220] In the timing of bistatic radar signal transmission, the timing and sequence of listen-before-talk triggering, the duration of monitoring interfering RF signals, and the timing of transmitting interference information in listen-before-answer messages can all be defined via protocols and information messages, which can be sent via control messages (such as RRI, MAC-CE, DCI, SCI, etc.) on a wireless communication control channel (e.g., PDCCH, PDSCH, PSCCH, or PSCCH) as described above. Control channel signaling can be very beneficial for coordinating the timing of various operations involved in a bistatic radar system for mobile vehicles. Considering the short time intervals between bistatic radar transmissions required for effective localization of objects in front of a fast-moving vehicle, precise timing is needed to ensure that the bistatic radar receiver monitors interfering RF signals and transmits interference information in a timely manner to allow adjustment of the directly transmitted radar signals (when the bistatic radar receiver is configured to monitor and process such signals). The low latency and short signal structure of wireless communication control signals are adapted to the requirements for transmitting the information and interference information messages required for triggering and coordinating the timing of such events.

[0221] Figure 8A and / or FIG. 8B illustrates operations of methods 800 and / or 801 for radar interference management performed by a processor of a UE according to various embodiments. Refer to Figure 1A-8A and / or FIG. 8B, the operations of methods 800 and / or 801 presented below are intended to be illustrative. In some embodiments, methods 800 and / or 801 may be implemented using one or more additional operations not described, and / or may be implemented without one or more of the operations discussed.

[0222] In some embodiments, methods 800 and / or 801 may be implemented in one or more processors (e.g., a digital processor, an analog processor, a digital circuit designed to process information, an analog circuit designed to process information, a state machine, and / or other mechanisms for electronically processing information) in response to instructions stored electronically on an electronic storage medium of the UE. The one or more processors may include one or more devices configured by hardware, firmware, and / or software to be specifically designed to perform one or more operations of methods 800 and / or 801. For example, refer to Figure 1A-8A and / or FIG. 8B, the operations of methods 800 and / or 801 may be performed by a processor (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a UE (e.g., 130).

[0223] Figure 8A FIG. 8A illustrates method 800 according to one or more implementations.

[0224] In block 821, the processor of the UE may perform operations including the following: receive a listen-before-talk trigger from the base station before a bistatic radar transmission. In block 821, the processor of the user equipment may use a radio module (e.g., 135). For example, the processor may receive one or more of the above wireless communication control messages. In some embodiments, the unit for performing the operations of block 821 may include a processor (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a processing device (e.g., 130, 140), which may use the memories 133, 143, external resources 420, and / or the radio module 135.

[0225] In block 823, the processor of the UE may perform operations including the following: instruct the bistatic radar receiver to monitor for radar interference signals during a listening interval. In block 823, the processor of the user equipment may use a vehicle radar system (e.g., 444). In some embodiments, the unit for performing the operations of block 823 may include a processor (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a processing device (e.g., 130, 140), which may use the memories 133, 143, external resources 420, and / or one or more sensors (e.g., the vehicle radar system 444).

[0226] In block 825, the processor of the UE may perform operations including the following: send radar signal interference information detected during the listening interval to the base station. In block 825, the processor of the user equipment may use a radio module (e.g., 135). In some embodiments, the unit for performing the operations of block 825 may include a processor (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a processing device (e.g., 130, 140), which may use the memories 133, 143, external resources 420, and / or the radio module 135.

[0227] In block 827, a processor of the UE may perform operations including the following: instructing a bistatic radar receiver to receive and process a bistatic radar signal after transmitting radar signal interference information. In block 827, a processor of the user equipment may use a radio module (e.g., 135) and / or a vehicle radar system (e.g., 444). In some embodiments, the unit for performing the operations of block 827 may include a processor (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a processing device (e.g., 130, 140), which may use memories 133, 143, external resource 420, radio module 135, and / or one or more sensors (e.g., vehicle radar system 444).

[0228] In some embodiments, the processor may repeat any or all of the operations in blocks 821, 823, 825, and 827 to perform radar interference management repeatedly or continuously.

[0229] Figure 8B A method 801 is shown that may be performed in conjunction with method 500 or as an enhancement to method 500.

[0230] In block 828, a processor of the UE may perform an operation after the operation in block 821 of method 800 such that the received listen-before-talk trigger provides at least one of the following: (a) instructing the bistatic radar receiver of the duration for which radar interference should be monitored; or (b) the time to transmit radar signal interference information to a base station. In block 828, a processor of the user equipment may use a radio module (e.g., 135). In some embodiments, the unit for performing the operations of block 523 may include a processor (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a processing device (e.g., 130, 140), which may use memories 133, 143, external resource 420, and / or radio module 135. After the operation in block 828, in block 823, the processor may instruct the bistatic radar receiver to monitor for radar interference signals during a listening interval.

[0231] In some embodiments, the processor may repeat any or all of the operations in blocks 821, 823, 825, 827, and 828 to perform radar interference management repeatedly or continuously.

[0232] Figure 9 Operations of a method 900 for radar interference management performed by a processor of a UE according to various embodiments are shown. Refer to Figure 1A-9, the operations of method 900 presented below are intended to be illustrative. In some embodiments, method 900 may be implemented using one or more additional operations not described, and / or may be implemented without one or more of the operations discussed.

[0233] In some embodiments, method 900 may be implemented in one or more processors (e.g., a digital processor, an analog processor, a digital circuit designed to process information, an analog circuit designed to process information, a state machine, and / or other mechanisms for electronically processing information) in response to instructions stored electronically on an electronic storage medium of a base station. The one or more processors may include one or more devices configured by hardware, firmware, and / or software to be specifically designed to perform one or more operations of method 900. For example, referring Figure 1A-9 , the operations of method 900 may be performed by a processor (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a base station control unit (e.g., 140).

[0234] In block 921, a processor of the base station control unit may perform operations including: sending a listen-before-talk trigger to a UE of a vehicle configured with a bistatic radar receiver, where the listen-before-talk trigger is configured to cause the UE to control the bistatic radar receiver to monitor for radar interference. In block 921, the processor of the base station control unit may use a wireless communication control message sending module (e.g., 452). In some embodiments, the unit for performing the operations of block 621 may include a processor (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a processing device (e.g., 130, 140), which may use memories 133, 143, external resource 420, and / or a transceiver (e.g., 145).

[0235] In block 923, a processor of the base station control unit may perform operations including: receiving radar signal interference information from the UE. In block 923, the processor of the base station control unit may use a transceiver (e.g., 145). In some embodiments, the unit for performing the operations of block 923 may include a processor (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a processing device (e.g., 130, 140), which may use memories 133, 143, external resource 420, and / or a transceiver (e.g., 145).

[0236] In block 925, a processor of the base station control unit may perform operations including the following: causing the bistatic radar transmitter to transmit a bistatic radar signal configured based on the received radar signal interference information, so that the bistatic radar receiver of the vehicle can detect an object regardless of radar interference. In block 923, a processor of the base station control unit may use a transceiver (e.g., 145) and / or the station radar system 454. In some embodiments, the unit for performing the operations of block 923 may include a processor (e.g., 210, 212, 214, 216, 218, 252, 260, 131, 141) of a processing device (e.g., 130, 140), which may use the memories 133, 143, the external resource 420, the transceiver (e.g., 145) and / or the station radar system (e.g., 454).

[0237] In some embodiments, the processor may repeat any or all of the operations in blocks 921, 923, and 925 to perform radar interference management repeatedly or continuously.

[0238] Each embodiment (including but not limited to the embodiments discussed above with reference to Figure 1A-9 can be implemented on various remote computing devices, examples of which are shown in Figure 10 in the form of a base station server. Referring to Figure 1A-10 , the base station server 1000 may include a processor 1001, which is coupled to a volatile memory 1002 and a large-capacity non-volatile memory (such as a disk drive 1003). The base station server 1000 may also include a peripheral memory access device coupled to the processor 1001, such as a floppy disk drive, a compact disc (CD) or a digital video disc (DVD) drive 1006. The base station server 1000 may also include a network access port 1004 (or interface) coupled to the processor 1001, which is used to establish a data connection with a network (such as the Internet and / or a local area network coupled to other system computers and servers). The base station server 1000 may include one or more antennas 1007, which are used to transmit and receive electromagnetic radiation that can be connected to a wireless communication link. The base station server 1000 may include additional access ports for coupling to peripheral devices, external memories or other devices, such as USB, Firewire, Thunderbolt, etc.

[0239] Each aspect (including but not limited to the embodiments discussed above with reference to Figure 1A-9 can be implemented on various UE systems, examples of which are shown in Figure 11 in the form of a computing device suitable for use in a vehicle. Referring to Figure 1A-11, the UE 1100 may include a first SoC 202 (e.g., SoC CPU), which is coupled to a second SoC 204 (e.g., a 5G-capable SoC) and a third SoC 1106 (e.g., a C-V2X SoC, which is configured to manage V2V, V2I, and V2P communications on a D2D link (such as a D2D link established in dedicated ITS 5.9 GHz spectrum communication)). The first SoC 202, the second SoC 204, and / or the third SoC 1106 may be coupled to an internal memory 1116 and a radio module 135. Additionally, the UE 1100 may include a radio module 135 (e.g., a wireless data link and / or a cellular transceiver, etc.), which is coupled to one or more processors in the first SoC 202, the second SoC 204, and / or the third SoC 1106. The radio module 135 may be connected to an antenna interface 1104 for connecting to a vehicle antenna to transmit and receive electromagnetic radiation.

[0240] The processors implementing the various embodiments can be any programmable microprocessor, microcomputer, or one or more multiprocessor chips, which can be configured by software instructions (applications) to perform various functions, including the functions of the various aspects described in this application. In some communication devices, multiple processors may be provided, such as one processor dedicated to wireless communication functions and one processor dedicated to running other applications. Generally, before accessing software applications and loading them into the processor, they can be stored in the internal memory. The processor may include an internal memory sufficient to store the software application instructions.

[0241] As used in this application, the terms "component", "module", "system", etc. are intended to include computer-related entities, such as but not limited to hardware, firmware, combinations of hardware and software, software, or software in execution, which are configured to perform specific operations or functions. For example, a component can be, but is not limited to: a process running on a processor, a processor, an object, an executable file, an executing thread, a program, and / or a computer. By way of illustration, both an application running on a processor of a communication device and the communication device can be referred to as components. One or more components can be located in a process and / or an executing thread, and the components can be located on one processor or core and / or distributed between two or more processors or cores. Additionally, these components can execute from various non-transitory computer-readable media having various instructions and / or data structures stored thereon. The components can communicate in ways such as local and / or remote procedure, function, or process calls, electronic signals, data packets, memory read / writes, and other known communication methods related to networks, computers, processors, and / or processes.

[0242] In the future, a variety of different cellular and mobile communication services and standards may be available or expected, all of which can be implemented and benefit in various aspects. Such services and standards may include, for example, the Third Generation Partnership Project (3GPP), Long Term Evolution (LTE) systems, Third Generation Wireless Mobile Communication Technology (3G), Fourth Generation Wireless Mobile Communication Technology (4G), Fifth Generation Wireless Mobile Communication Technology (5G), Global System for Mobile Communications (GSM), Universal Mobile Telecommunication System (UMTS), 3GSM, General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA) systems (e.g., cdmaOne, CDMA1020TM), EDGE, Advanced Mobile Phone System (AMPS), Digital AMPS (IS-136 / TDMA), Evolution-Data Optimized (EV-DO), Digital Enhanced Cordless Telecommunications (DECT), Worldwide Interoperability for Microwave Access (WiMAX), Wireless Local Area Network (WLAN), Wi-Fi Protected Access I and II (WPA, WPA2), Integrated Digital Enhanced Network (iden), C-V2X, V2V, V2P, V2I, and V2N, etc. Each of these technologies involves, for example, the transmission and reception of voice, data, signaling, and / or content messages. It should be understood that any reference to terms and / or technical details related to a particular telecommunications standard or technology is for illustrative purposes only and is not intended to limit the scope of the claims to a specific communication system or technology, unless specifically recited in the language of the claims.

[0243] The various aspects shown and described are provided only as examples to illustrate the various features of the claims. However, the features shown and described with respect to any given aspect are not necessarily limited to the associated aspect and may be used or combined with other aspects shown and described. Additionally, the claims are not intended to be limited by any one example aspect. For example, one or more operations of these methods may be replaced or combined with one or more operations of these methods.

[0244] The foregoing method descriptions and process flow diagrams are provided only as illustrative examples and are not intended to require or imply that the operations of the various aspects must be performed in the order given. As will be apparent to those skilled in the art, the order of the operations in the foregoing aspects may be performed in any order. Words such as "thereafter," "subsequently," "then," etc. are not intended to limit the order of the operations; these words are used to guide the reader through the description of the method. Additionally, any reference to a claim element in the singular form (e.g., using the articles "a," "an," or "the") should not be construed as limiting that element to the singular.

[0245] The various illustrative logical blocks, modules, components, circuits, and algorithmic operations described in connection with the aspects disclosed herein can be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and operations have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the claims.

[0246] Hardware for implementing the various illustrative logics, logic blocks, modules, and circuits described in connection with the aspects disclosed herein can be implemented or performed using a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration. Alternatively, some operations or methods may be performed by circuitry that is specific to a given function.

[0247] In one or more aspects, the functionality may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functionality may be stored as one or more instructions or code on a non-transitory computer-readable medium or a non-transitory processor-readable storage medium. Operations of a method or algorithm disclosed herein may be embodied in a processor-executable software module or processor-executable instructions, which may reside on a non-transitory computer-readable or processor-readable storage medium. A non-transitory computer-readable or processor-readable storage medium may be any storage medium that can be accessed by a computer or a processor. By way of example and not limitation, such non-transitory computer-readable or processor-readable storage medium may include RAM, ROM, EEPROM, flash memory, CD-ROM or other optical disk storage, disk storage or other magnetic storage devices, or any other medium that can be used to store the desired program code in the form of instructions or data structures and that can be accessed by a computer. As used herein, disk and optical disks include compact disk (CD), laser disk, optical disk, digital versatile disk (DVD), floppy disk, and Blu-ray disk, where disks typically reproduce data magnetically, while optical disks utilize lasers to optically reproduce data. Combinations of the above are also included within the scope of non-transitory computer-readable and processor-readable media. Additionally, operations of a method or algorithm may reside as code and / or instructions in one or any combination of a non-transitory processor-readable storage medium and / or a computer-readable storage medium, which may be incorporated into a computer program product.

[0248] The foregoing description of the disclosed aspects enables any person skilled in the art to make or use the claims. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the claims. Thus, the present disclosure is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the claims and the principles and novel features disclosed herein.

Claims

1. A method executed by a processor of a first user equipment of a first vehicle having a first radar system, comprising: Receiving, at the first user equipment, a wireless communication control message from a base station, the wireless communication control message including radar transmission configuration information or radar reception interference information regarding a radar signal from a second radar system of a second vehicle having a second user equipment, wherein the radar transmission configuration information or the radar reception interference information is separately sent via different wireless communication control messages for different radar components installed at different positions of the first vehicle and / or the second vehicle; and Using the radar transmission configuration information or the radar reception interference information received from the base station to manage the operation of the first radar system.

2. The method according to claim 1, wherein The wireless communication control message includes one of the following: a radio resource control (RRC) message, a media access control - control element (MAC-CE), a downlink control information (DCI), or a sidelink control information (SCI).

3. The method according to claim 2, wherein The DCI or the SCI is carried via one of the following: a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical sidelink control channel (PSCCH), or a physical sidelink shared channel (PSSCH).

4. The method according to claim 1, wherein, The wireless communication control message includes radar transmission configuration information, the radar transmission configuration information including: A modified radar transmission configuration for use in operating the first radar system to avoid interference with the radar signal from the second radar system of the second vehicle.

5. The method according to claim 1, wherein The wireless communication control message includes radar transmission configuration information for use in operating the first radar system, the radar transmission configuration information including at least one of the following: time or frequency resources; waveform, duty cycle, or starting point; transmission power; spatial, time, or frequency precoding information; or beam scanning pattern.

6. The method according to claim 1, wherein The wireless communication control message includes an indication that the first vehicle should immediately terminate radar transmission.

7. The method according to claim 1, wherein The wireless communication control message is one of a downlink control information (DCI) or a sidelink control information (SCI), the DCI or the SCI including radar transmission configuration information for use in managing radar transmission performed by the first radar system including a plurality of radar components, wherein the plurality of radar components are: Radar components installed at different positions of the second vehicle; Transmitting using different polarization types; Transmitting different waveforms for radar transmission by the radar components of the second radar system; or Transmitting at different transmit power levels.

8. The method according to claim 7, wherein The wireless communication control message is transmitted via a plurality of RRC configurations or MAC-CE messages or a set of DCI or SCI, including at least one of the following: Different sets of DCI or SCI are distinguished using different synchronization signals (SS), radio network temporary identifiers, or other control information formats, wherein each format in the formats corresponds to a different radar component of the second radar system; Different DCI or SCI sets are carried by different items among the following: Physical Downlink Control Channel (PDCCH), Physical Downlink Shared Channel (PDSCH), Physical Sidelink Control Channel (PSCCH), or Physical Sidelink Shared Channel (PSSCH); or The different DCI or SCI sets specify semi-persistent radar signal transmission parameters for the first radar system of the first vehicle to use until the next DCI or SCI set is received.

9. The method according to claim 8, wherein, The multiple RRC configurations or MAC-CE messages or DCI or SCI sets are respectively associated with different radar components, and the different radar components are at least one of the following cases: The radar components are installed at different positions on the second vehicle; Transmissions are made using different polarization types; Transmit different waveforms for radar transmission by the radar components of the second radar system; or Transmissions are made at different transmit power levels.

10. The method according to claim 1, wherein The wireless communication control message is one of Downlink Control Information (DCI) or Sidelink Control Information (SCI), and the DCI or the SCI includes radar reception interference information for use when processing signals received by the first radar system corresponding to more than one radar component of the second radar system. The radar reception interference information includes at least one of the following: The different installation positions of the radar components of the second radar system on the second vehicle; The different polarization types of the radar components of the second radar system; The different waveforms for radar transmission by the radar components of the second radar system; Or The different supported levels of the maximum transmission power of the radar components of the second radar system.

11. The method according to claim 10, wherein, The wireless communication control message is transmitted through multiple DCI or SCI sets, including at least one of the following: The different DCI or SCI sets are distinguished by different Synchronization Signals (SS), Radio Network Temporary Identifiers, or other control information formats, where each format in the formats corresponds to a different radar component of the second radar system; The different DCI or SCI sets are carried by different items among the following: Physical Downlink Control Channel (PDCCH), Physical Downlink Shared Channel (PDSCH), Physical Sidelink Control Channel (PSCCH), or Physical Sidelink Shared Channel (PSSCH); or The different DCI or SCI sets specify semi-persistent radar signal transmission parameters for the first radar system of the first vehicle to use until the next DCI or SCI set is received.

12. According to the method of claim 1, wherein: The wireless communication control message is one of Downlink Control Information (DCI) or Sidelink Control Information (SCI); And Managing the operation of the first radar system using the radar transmission configuration information or the radar reception interference information received from the base station includes: suspending radar transmission in response to not receiving DCI or SCI until the next DCI or SCI is received.

13. The method according to claim 1, wherein, The wireless communication control message includes radar transmission configuration information, and the radar transmission configuration information is a part of group common downlink control information (GC-DCI) for a group of user equipments including the first user equipment in a group of vehicles, wherein fields within the GC-DCI correspond to specific user equipments within the group of user equipments and identify radar signal transmission parameters of a radar system to be used for managing a corresponding vehicle within the group of vehicles.

14. The method according to claim 13, wherein, The GC-DCI includes a common field, and the common field identifies radar signal transmission parameters to be used for managing all radar systems in the group of vehicles.

15. The method according to claim 1, wherein The wireless communication control message includes radar reception interference information, and the radar reception interference information includes: radar reception parameters configured such that a radar coupled to the first user equipment can mitigate radar reception interference from a radar signal of the second radar system from the second vehicle, and the radar reception parameters include at least one of a position of the second vehicle or radar signal parameters of the second radar system.

16. A method for reducing radar interference in a vehicle radar, executed by a processor of a base station, includes: determining radar transmission configuration information or radar reception interference information useful for a first radar system of a first vehicle having a first user equipment; and sending a wireless communication control message to the first user equipment of the first vehicle, the wireless communication control message including the determined radar transmission configuration information or radar reception interference information, wherein the radar transmission configuration information or the radar reception interference information is separately sent by different wireless communication control messages for different radar components installed at different positions of the first vehicle.

17. The method according to claim 16, wherein, The wireless communication control message includes one of the following: a radio resource control (RRC) message, a media access control - control element (MAC-CE), a downlink control information (DCI), or a sidelink control information (SCI).

18. The method according to claim 17, wherein, The DCI or the SCI is carried by one of the following: a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical sidelink control channel (PSCCH), or a physical sidelink shared channel (PSSCH).

19. The method according to claim 16, wherein, Determining radar transmission configuration information or radar reception interference information useful for the first radar system of the first vehicle having the first user equipment includes determining radar transmission configuration information, and the radar transmission configuration information includes: a modified radar transmission configuration for use in operating the first radar system of the first vehicle to avoid interference from a radar signal of a second radar system from a second vehicle having a second user equipment.

20. The method according to claim 16, wherein, Determining radar transmission configuration information or radar reception interference information useful for the first radar system of the first vehicle having the first user equipment includes: radar transmission configuration information for use when operating the first radar system, the radar transmission configuration information including at least one of the following: time or frequency resources; waveform, duty cycle, or start point; transmission power; spatial, time, or frequency precoding information; or beam scanning pattern.

21. The method according to claim 16, wherein Determining radar transmission configuration information or radar reception interference information useful for the first radar system of the first vehicle having the first user equipment includes: an indication that the first vehicle should immediately terminate radar transmission.

22. The method according to claim 16, wherein: The wireless communication control message is one of downlink control information DCI or sidelink control information SCI; And Determining radar transmission configuration information or radar reception interference information useful for the first radar system of the first vehicle includes: determining radar transmission configuration information for use in managing radar transmissions performed by the first radar system including a plurality of radar components, wherein the plurality of radar components of the second radar system of the second vehicle are as follows: The radar components are installed at different positions on the second vehicle; Transmitting using different polarization types; Transmitting different waveforms for radar transmissions performed by the radar components of the second radar system; or Transmitting at different transmit power levels.

23. The method according to claim 22, wherein, The wireless communication control message is transmitted by a plurality of RRC configurations or MAC-CE messages or DCI or SCI sets, including at least one of the following: The different DCI or SCI sets are distinguished by different synchronization signals, radio network temporary identifiers, or other control information formats, wherein each format in the formats corresponds to a different radar component of the second vehicle; The different DCI or SCI sets are transmitted in different ones of the following: physical downlink control channel PDCCH, physical downlink shared channel PDSCH, physical sidelink control channel PSCCH, or physical sidelink shared channel PSSCH; or The different DCI or SCI sets specify radar signal transmission parameters for use by the first radar system of the first vehicle until the next DCI or SCI set is received.

24. The method according to claim 23, wherein: The plurality of RRC configurations or MAC-CE messages or DCI or SCI sets are respectively associated with different radar components of the first radar system, the different radar components including: The radar components of the second radar system are installed at different positions on the second vehicle; Transmitting using different polarization types; Transmitting different waveforms for radar transmissions performed by the radar components of the second radar system; or Transmitting at different transmit power levels.

25. The method according to claim 16, wherein: Determining radar transmission configuration information or radar reception interference information useful for the first radar system of the first vehicle includes: determining radar transmission configuration information for a group of vehicles; and Transmitting the wireless communication control message including the determined radar transmission configuration information or radar reception interference information includes: transmitting group common downlink control information GC-DCI to user equipment in the group of vehicles, the GC-DCI including a field therein corresponding to a specific user equipment within a group of user equipment and identifying radar signal transmission parameters for use in managing the radar system of the corresponding vehicle within the group of vehicles.

26. The method according to claim 25, wherein, The GC-DCI includes a common field that identifies radar signal transmission parameters for use in managing all radar systems in the group of vehicles.

27. The method according to claim 16, wherein Determining radar transmission configuration information or radar reception interference information useful for the first radar system of the first vehicle includes: determining radar reception interference information including radar reception parameters configured such that the first radar system can mitigate radar reception interference from radar signals of a second radar system of a second vehicle, the radar reception parameters including at least one of the position of the second vehicle or the radar signal parameters of the second radar system.

28. A method for managing radar interference, performed by a processor of a first user equipment of a first vehicle equipped with a bistatic radar receiver, includes: Receiving a listen-before-talk trigger from a base station prior to bistatic radar transmission; Instructing the bistatic radar receiver to monitor for radar interference signals during a listening interval; Sending radar signal interference information detected during the listening interval to the base station; and And Instructing the bistatic radar receiver to receive and process bistatic radar signals after transmitting the radar signal interference information.

29. The method according to claim 28, wherein, The received listen-before-talk trigger provides at least one of the following: Instructing the duration for which the bistatic radar receiver should monitor for radar interference; or The time to send the radar signal interference information to the base station.

30. A method performed by a processor of a base station associated with a bistatic radar transmitter, includes: Sending a listen-before-talk trigger to a user equipment of a vehicle configured with a bistatic radar receiver, wherein the listen-before-talk trigger is configured such that the user equipment controls the bistatic radar receiver to monitor for radar interference; Receiving radar signal interference information from the user equipment; and Causing the bistatic radar transmitter to send a bistatic radar signal configured based on the received radar signal interference information such that the bistatic radar receiver of the vehicle can detect an object regardless of the radar interference.

31. A user equipment configured for use in a vehicle equipped with a radar system, includes: A wireless transceiver; And A processor coupled to the wireless transceiver and configured with processor-executable instructions to perform the following operations: Receive a wireless communication control message from a base station, the wireless communication control message including radar transmission configuration information or radar reception interference information regarding a radar signal from a second radar system of a second vehicle, wherein the radar transmission configuration information or the radar reception interference information is separately sent for different radar components installed at different positions of the vehicle and / or the second vehicle via different wireless communication control messages; And Use the radar transmission configuration information or the radar reception interference information received from the base station to manage the operation of the radar system.

32. A base station, comprising: A wireless transceiver; And A processor coupled to the wireless transceiver and configured with processor-executable instructions to perform the following operations: Determine radar transmission configuration information or radar reception interference information useful for a radar system of a vehicle having a user equipment; And Send a wireless communication control message to the user equipment of the vehicle, the wireless communication control message including the determined radar transmission configuration information or radar reception interference information, wherein the radar transmission configuration information or the radar reception interference information is separately sent for different radar components installed at different positions of the vehicle via different wireless communication control messages.

33. A user equipment configured for use in a vehicle equipped with a bistatic radar receiver, comprising: A wireless transceiver; And A processor coupled to the wireless transceiver and configured with processor-executable instructions to perform the following operations: Receive a listen-before-talk trigger from a base station prior to bistatic radar transmission; Instruct the bistatic radar receiver to monitor for radar interference signals during a listening interval; Send radar signal interference information detected during the listening interval to the base station; And Instruct the bistatic radar receiver to receive and process a bistatic radar signal after sending the radar signal interference information.

34. A base station associated with a bistatic radar transmitter, comprising: A wireless transceiver; And A processor coupled to the wireless transceiver and configured with processor-executable instructions to perform the following operations: Send a listen-before-talk trigger to a user equipment of a vehicle configured with a bistatic radar receiver, wherein the listen-before-talk trigger is configured to cause the user equipment to control the bistatic radar receiver to monitor for radar interference; Receive radar signal interference information from the user equipment; and Cause the bistatic radar transmitter to send a bistatic radar signal configured based on the received radar signal interference information such that the bistatic radar receiver of the vehicle can detect an object regardless of the radar interference.

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