Aircraft beam muting for multi-aircraft emergency message relay

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, an air node may determine, among a set of beams, one or more beams to be muted to mitigate potential interference associated with a plurality of air nodes transmitting to a terrestrial user equipment (UE). The air node may silence the one or more beams while sending at least one of a discovery signal or feedback related to an emergency message relay service to the terrestrial UE. Numerous other aspects are described.

Description

[0001] Cross-references to related applications

[0002] This patent application claims priority to U.S. Patent Application No. 18 / 295,502, filed April 4, 2023, entitled "AIRCRAFT BEAM MUTING FORMULTI-AIRCRAFT EMERGENCY MES SAGE RELAYING", which is assigned to the assignee of this application. The disclosure of the earlier application is considered part of this patent application and is incorporated herein by reference. Technical Field

[0003] All aspects of this disclosure relate to wireless communication in general, and to techniques and apparatus associated with aircraft beam silence for multi-aircraft emergency message relay. Background Technology

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunications services, such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies that enable communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE / LTE-Advanced is an enhanced set of the Universal Mobile Telecommunications System (UMTS) mobile standard issued by the 3rd Generation Partnership Project (3GPP).

[0005] A wireless network may include one or more base stations that support communication for user equipment (UE) or multiple UEs. UEs may communicate with base stations via downlink and uplink communication. "Downlink" (or "DL") refers to the communication link from the base station to the UE, and "uplink" (or "UL") refers to the communication link from the UE to the base station.

[0006] The aforementioned multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that enables different UEs to communicate at the city, country, region, and / or global levels. New Radio (NR) (which may be referred to as 5G) is an enhancement set to the LTE mobile standard issued by 3GPP. NR is designed to better support mobile broadband internet access by: improving spectrum efficiency; reducing costs; improving service; utilizing new spectrum; and better integrating with other open standards by using Orthogonal Frequency Division Multiplexing (OFDM) with Cyclic Prefix (CP) on the downlink (CP-OFDM), and CP-OFDM and / or Single Carrier Frequency Division Multiplexing (SC-FDM) (also known as Discrete Fourier Transform Extended OFDM (DFT-s-OFDM)) on the uplink; and supporting beamforming, Multiple-Input Multiple-Output (MIMO) antenna technologies and carrier aggregation. Further improvements to LTE, NR, and other radio access technologies remain useful as the demand for mobile broadband access continues to increase. Summary of the Invention

[0007] Some aspects described herein relate to an air node for wireless communication. The air node may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to determine, within a beam set, one or more beams to be silenced to mitigate potential interference associated with transmissions from multiple air nodes to ground user equipment (UE). The one or more processors may be configured to silence one or more beams while transmitting at least one of a discovery signal or feedback related to emergency message relay service to the ground UE.

[0008] Some aspects described herein relate to a method for wireless communication performed by an air node. This method may include identifying one or more beams from a beam set to be silenced to mitigate potential interference associated with transmissions from multiple air nodes to a terrestrial UE. The method may include silencing one or more beams while transmitting at least one of a discovery signal or feedback related to an emergency message relay service to the terrestrial UE.

[0009] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication. When executed by one or more processors of an air node, this set of instructions enables the air node to determine, within a beam set, one or more beams to be silenced to mitigate potential interference associated with transmissions from multiple air nodes to a ground-based UE. When executed by one or more processors of an air node, this set of instructions enables the air node to silence one or more beams while simultaneously transmitting at least one of a discovery signal or feedback related to an emergency message relay service to the ground-based UE.

[0010] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include components for determining one or more beams within a beam set to be silenced to mitigate potential interference associated with transmissions from multiple air nodes to a terrestrial UE. The apparatus may also include components for silencing one or more beams while transmitting at least one of a discovery signal or feedback related to an emergency message relay service to the terrestrial UE.

[0011] The entirety of the categories includes methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, nodes, and / or processing systems as fully described herein with reference to the accompanying drawings and description and illustrated as illustrated in the drawings and description.

[0012] The features and technical advantages of the examples according to this disclosure have been summarized rather extensively above in order to provide a better understanding of the detailed description that follows. Additional features and advantages will be described below. The disclosed concepts and specific examples can be readily used as the basis for modifying or designing other structures for achieving the same purpose as this disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, in both their organization and manner of operation, and the associated advantages, will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the drawings provided is for illustrative and descriptive purposes and not as a definition of limitation of the claims.

[0013] While aspects are described herein by way of example, those skilled in the art will understand that such aspects can be implemented in many different arrangements and scenarios. The techniques described herein can be implemented using different platform types, devices, systems, shapes, sizes, and / or package arrangements. For example, some aspects can be implemented via integrated chip implementations or other devices based on non-modular components (e.g., end-user equipment, vehicles, communication equipment, computing devices, industrial equipment, retail / shopping devices, medical devices, and / or artificial intelligence devices). Aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, and / or system-level components. Devices incorporating the described aspects and features may include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals may include one or more components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, and / or summers). The aspects described herein are intended to be practiced in a wide variety of devices, components, systems, distributed arrangements, and / or end-user equipment of various sizes, shapes, and configurations. Attached Figure Description

[0014] To gain a full understanding of the foregoing features of this disclosure, a more specific description of the invention, briefly outlined above, can be obtained by referring to various aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the drawings illustrate only certain typical aspects of this disclosure and are therefore not to be considered as limiting its scope, as the description may acknowledge other equally valid aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0015] Figure 1 This is a diagram illustrating an example of a wireless network according to the present disclosure.

[0016] Figure 2 This is a diagram illustrating an example of communication between a base station and a user equipment (UE) in a wireless network according to the present disclosure.

[0017] Figure 3 This is a diagram illustrating an example of air-to-ground (ATG) communication according to this disclosure.

[0018] Figure 4 This is an illustration of an example related to the use of ATG communication to relay emergency messages for terrestrial UEs outside coverage, according to this disclosure.

[0019] Figures 5A to 5D This is an illustration illustrating an example of how aircraft beam silence is associated with multi-aircraft emergency message relay according to this disclosure.

[0020] Figure 6 This is a diagram illustrating an example process associated with aircraft beam silence for multi-aircraft emergency message relay according to this disclosure.

[0021] Figure 7 This is a diagram of an example device for wireless communication according to the present disclosure. Detailed Implementation

[0022] Various aspects of this disclosure are described more fully below with reference to the accompanying drawings. However, this disclosure may be embodied in many different forms and should not be construed as limited to any particular structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be comprehensive and complete, and will fully convey the scope of this disclosure to those skilled in the art. Those skilled in the art will appreciate that the scope of this disclosure is intended to cover any aspect of this disclosure disclosed herein, whether implemented independently or in combination with any other aspect of this disclosure. For example, any number of aspects set forth herein may be used to implement an apparatus or practice. Furthermore, the scope of this disclosure is intended to cover such apparatuses or methods practiced using structures, functions, or structures and functions other than or different from the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure herein may be embodied by one or more elements of the present claims.

[0023] Various devices and techniques will now be used to illustrate several aspects of a telecommunications system. These devices and techniques will be described in detail below and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, or algorithms (collectively, “elements”). These elements can be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the system as a whole.

[0024] Although terms generally associated with 5G or New Radio (NR) Radio Access Technology (RAT) may be used herein to describe aspects, aspects of this disclosure may be applied to other RATs, such as 3G RAT, 4G RAT and / or 5G and later (e.g., 6G) RATs.

[0025] Figure 1This is a diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be a 5G (e.g., NR) network and / or a 4G (e.g., LTE) network, or may include elements of a 5G (e.g., NR) network and / or elements of a 4G (e.g., LTE) network, etc. The wireless network 100 may include one or more base stations 110 (shown as BS110a, BS110b, BS110c, and BS110d), user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE120b, UE 120c, UE 120d, and UE 120e), and / or other network entities. Base station 110 is the entity that communicates with UE 120. Base station 110 (sometimes referred to as BS) may include, for example, an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, and / or a Transmit / Receive Point (TRP). Each base station 110 can provide communication coverage for a specific geographic area. In the 3rd Generation Partnership Project (3GPP), the term "cell" may refer to the coverage area of ​​base station 110 and / or the base station subsystem serving that coverage area, depending on the context in which the term is used.

[0026] Base station 110 can provide communication coverage for macro cells, pico cells, femtocells, and / or another type of cell. A macro cell can cover a relatively large geographic area (e.g., a radius of several kilometers) and can allow unrestricted access by UE 120 with a service subscription. A pico cell can cover a relatively small geographic area and can allow unrestricted access by UE 120 with a service subscription. A femtocell can cover a relatively small geographic area (e.g., a home) and can allow restricted access by UE 120 associated with the femtocell (e.g., UE 120 in a Closed Subscriber Group (CSG)). Base station 110 for macro cells can be referred to as a macro base station. Base station 110 for pico cells can be referred to as a pico base station. Base station 110 for femtocells can be referred to as a femtocell or a home base station. Figure 1 In the example shown, BS110a can be a macro base station for macro cell 102a, BS110b can be a pico base station for pico cell 102b, and BS110c can be a femto base station for femto cell 102c. A base station can support one or more (e.g., three) cells.

[0027] In some examples, the cell may not necessarily be fixed, and the geographical area of ​​the cell may move depending on the location of the mobile base station 110 (e.g., a mobile base station). In some examples, base station 110 may interconnect with each other and / or interconnect to one or more other base stations 110 or network nodes (not shown) in the wireless network 100 using any suitable transport network through various types of backhaul interfaces (such as direct physical connections or virtual networks).

[0028] Wireless network 100 may include one or more relay stations. A relay station is an entity that can receive data transmissions from an upstream station (e.g., base station 110 or UE 120) and transmit data to a downstream station (e.g., UE 120 or base station 110). A relay station may be a UE 120 that can relay transmissions for other UE 120s. Figure 1 In the example shown, BS110d (e.g., a relay base station) can communicate with BS110a (e.g., a macro base station) and UE 120d to facilitate communication between BS110a and UE 120d. The base station 110 for relay communication may be referred to as a relay station, relay base station, relay, etc.

[0029] Wireless network 100 can be a heterogeneous network, comprising different types of base stations 110, such as macro base stations, pico base stations, femto base stations, relay base stations, etc. These different types of base stations 110 may have different transmit power levels, different coverage areas, and / or different effects on interference in wireless network 100. For example, macro base stations may have high transmit power levels (e.g., 5 watts to 40 watts), while pico base stations, femto base stations, and relay base stations may have lower transmit power levels (e.g., 0.1 watts to 2 watts).

[0030] Network controller 130 may be coupled to or communicate with a set of base stations 110, and may provide coordination and control for these base stations 110. Network controller 130 may communicate with base stations 110 via a backhaul communication link. Base stations 110 may also communicate directly with each other, or indirectly via a wireless or wired backhaul communication link.

[0031] UE 120 may be distributed throughout the wireless network 100, and each UE 120 may be stationary or mobile. UE 120 may include, for example, access terminals, terminals, mobile stations, and / or subscriber units. UE 120 may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smartwatch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or smart bracelet)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a GPS device, and / or any other suitable device configured to communicate via a wireless medium.

[0032] Some UEs 120 may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs. MTC UEs and / or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags that can communicate with a base station, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (Narrowband IoT) devices. Some UEs 120 may be considered customer premises equipment. UE 120 may be included within a housing that houses the components of UE 120, such as processor components and / or memory components. In some examples, the processor components and memory components may be coupled together. For example, the processor components (e.g., one or more processors) and memory components (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0033] Generally, any number of wireless networks 100 can be deployed in a given geographical area. Each wireless network 100 can support a specific RAT and can operate on one or more frequencies. A RAT may be referred to as a radio technology, air interface, etc. A frequency may be referred to as a carrier, frequency channel, etc. Each frequency in a given geographical area can support a single RAT to avoid interference between wireless networks using different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0034] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary to communicate with each other). For example, UEs 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols) and / or mesh networks. In such examples, UEs 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.

[0035] Devices in Wireless Network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, devices in Wireless Network 100 can communicate using one or more operating frequency bands. In 5G NR, two initial operating frequency bands have been designated as frequency ranges FR1 (410MHz to 7.125GHz) and FR2 (24.25GHz to 52.6GHz). It should be understood that although a portion of FR1 is greater than 6GHz, FR1 is often (interchangeably) referred to as the "sub-6GHz" band in various documents and articles. Similar naming issues sometimes occur with FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, although this is different from the Extremely High Frequency (EHF) band (30GHz to 300GHz) designated as "millimeter wave" by the International Telecommunication Union (ITU).

[0036] The frequencies between FR1 and FR2 are generally referred to as intermediate frequency (IF) bands. Recent 5G NR studies have designated the operating bands for these IF bands as the frequency range designation FR3 (7.125 GHz to 24.25 GHz). Bands falling within FR3 can inherit FR1 and / or FR2 characteristics, thus effectively extending the features of FR1 and / or FR2 to IF band frequencies. Additionally, higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz. For example, three higher operating bands have been designated as the frequency range designations FR4a or FR4-1 (52.6 GHz to 71 GHz), FR4 (52.6 GHz to 114.25 GHz), and FR5 (114.25 GHz to 300 GHz). Each of these higher frequency bands falls within the EHF band.

[0037] Considering the examples above, unless otherwise specifically stated, it should be understood that if the term "below 6 GHz" is used herein, it can broadly refer to frequencies below 6 GHz, within FR1, or including intermediate frequency bands. Furthermore, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" is used herein, it can broadly refer to frequencies that can include intermediate frequency bands, within FR2, FR4, FR4-a, or FR4-1 and / or FR5, or within the EHF band. Modifications to frequencies included in these operating frequency bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) are contemplated, and the techniques described herein are applicable to those modified frequency ranges.

[0038] In some aspects, the terms "base station" (e.g., base station 110), "network node," or "network entity" may refer to an aggregated base station, a decomposed base station (e.g., described in conjunction with Figure 9), an integrated access and backhaul (IAB) node, a relay node, and / or one or more components thereof. For example, in some aspects, "base station," "network node," or "network entity" may refer to a central unit (CU), a distributed unit (DU), a radio unit (RU), a near real-time (near RT) RAN intelligent controller (RIC), or a non-real-time (non-RT) RIC, or a combination thereof. In some aspects, the terms "base station," "network node," or "network entity" may refer to a device configured to perform one or more functions (such as those described herein in conjunction with base station 110). In some aspects, the terms "base station," "network node," or "network entity" may refer to multiple devices configured to perform one or more functions. For example, in some distributed systems, each of several different devices (which may be located in the same geographical location or in different geographical locations) may be configured to perform at least a portion of a function, or to repeat the execution of at least a portion of that function, and the terms "base station," "network node," or "network entity" may refer to any one or more of these different devices. In some aspects, the terms "base station," "network node," or "network entity" may refer to one or more virtual base stations and / or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device. In some aspects, the terms "base station," "network node," or "network entity" may refer to one base station function and not another. In this way, a single device may include more than one base station.

[0039] In some respects, UE 120 may correspond to an air node including communication manager 140. As described in more detail elsewhere herein, communication manager 140 may: determine, within a beam set, one or more beams to be silenced to mitigate potential interference associated with transmissions from multiple air nodes to the land UE 120; and silence one or more beams while transmitting at least one of a discovery signal or feedback related to emergency message relay service to the land UE 120. Additionally or alternatively, communication manager 140 may perform one or more other operations described herein.

[0040] As indicated above, Figure 1 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 1 The examples described are different.

[0041] Figure 2 This is a diagram illustrating example 200 of communication between base station 110 and UE 120 in wireless network 100 according to the present disclosure. Base station 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T≥1). UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R≥1).

[0042] At base station 110, transmitting processor 220 can receive data from data source 212 intended for use by UE 120 (or a set of UEs 120). Transmitting processor 220 can select one or more modulation and decoding schemes (MCS) for UE 120, at least in part, based on one or more Channel Quality Indicators (CQIs) received from UE 120. Base station 110 can process (e.g., encode and modulate) the data for UE 120, at least in part, based on the MCS selected for UE 120, and can provide data symbols for UE 120. Transmitting processor 220 can process system information (e.g., for Semi-Static Resource Partitioning Information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper-layer signaling), and provide overhead symbols and control symbols. Transmitting processor 220 can generate reference symbols for reference signals (e.g., Cell-Specific Reference Signal (CRS) or Demodulation Reference Signal (DMRS)) and synchronization signals (e.g., Primary Synchronization Signal (PSS) or Secondary Synchronization Signal (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., pre-decoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and can provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) (shown as modems 232a to 232t). For example, each output symbol stream can be provided to a modulator component (shown as MOD) of modem 232. Each modem 232 can use a corresponding modulator component to process the corresponding output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modem 232 can also use a corresponding modulator component to process the output sample stream (e.g., convert to analog, amplify, filter, and / or up-convert) to obtain a downlink signal. Modems 232a to 232t can transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) (shown as antennas 234a to 234t).

[0043] At UE 120, an array of antennas 252 (shown as antennas 252a to 252r) can receive downlink signals from base station 110 and / or other base stations 110, and can provide an array of received signals (e.g., R received signals) to an array of modems 254 (e.g., R modems) (shown as modems 254a to 254r). For example, each received signal can be provided to a demodulator component (shown as DEMOD) of modem 254. Each modem 254 can use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain an input sample. Each modem 254 can use the demodulator component to further process the input sample (e.g., for OFDM) to obtain a received symbol. MIMO detector 256 can obtain the received symbols from modem 254, perform MIMO detection on the received symbols where applicable, and provide the detected symbols. The receiver processor 258 can process (e.g., demodulate and decode) the detected symbols, provide the decoded data for UE 120 to data sink 260, and provide the decoded control information and system information to controller / processor 280. The term "controller / processor" can refer to one or more controllers, one or more processors, or a combination thereof. The channel processor can determine Reference Signal Received Power (RSRP) parameters, Received Signal Strength Indicator (RSSI) parameters, Reference Signal Received Quality (RSRQ) parameters, and / or CQI parameters, etc. In some examples, one or more components of UE 120 may be included in housing 284.

[0044] Network controller 130 may include communication unit 294, controller / processor 290, and memory 292. Network controller 130 may include one or more devices, such as those in a core network. Network controller 130 may communicate with base station 110 via communication unit 294.

[0045] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and / or one or more antenna arrays, etc., or may be included within one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and / or one or more antenna arrays, etc. Antenna panels, antenna groups, sets of antenna elements, and / or antenna arrays may include one or more antenna elements (within a single housing or multiple housings), sets of coplanar antenna elements, sets of non-coplanar antenna elements, and / or be coupled to one or more transmitting and / or receiving components (such as...). Figure 2 One or more antenna elements (one or more components in the process).

[0046] On the uplink, at UE 120, transmit processor 264 can receive and process data from data source 262 and control information from controller / processor 280 (e.g., for reporting including RSRP, RSSI, RSRQ, and / or CQI). Transmit processor 264 can generate reference symbols for one or more reference signals. Symbols from transmit processor 264 may be pre-decoded by TX MIMO processor 266 where applicable, further processed by modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In some examples, modem 254 of UE 120 may include modulator and demodulator. In some examples, UE 120 includes transceiver. Transceiver may include antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, and / or TX MIMO processor 266, any combination of these components. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to execute this document (e.g., reference). Figure 4 , Figures 5A to 5D and / or Figures 6 to 7 ( ) aspects of any of the methods described in the method.

[0047] At base station 110, uplink signals from UE 120 and / or other UEs may be received by antenna 234, processed by modem 232 (e.g., a demodulator component of modem 232 shown as DEMOD), detected by MIMO detector 236 where applicable, and further processed by receive processor 238 to obtain decoded data and control information transmitted by UE 120. Receive processor 238 may provide the decoded data to data sink 239 and the decoded control information to controller / processor 240. Base station 110 may include communication unit 244 and may communicate with network controller 130 via communication unit 244. Base station 110 may include scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communication. In some examples, modem 232 of base station 110 may include modulator and demodulator. In some examples, base station 110 includes transceiver. The transceiver may include any combination of antenna 234, modem 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to execute this document (e.g., references). Figure 4 , Figures 5A to 5D and / or Figures 6 to 7 ( ) aspects of any of the methods described in the method.

[0048] The controller / processor 240 of base station 110, the controller / processor 280 of UE 120 and / or Figure 2 Any other component may perform one or more techniques associated with aircraft beam silence for multi-aircraft emergency message relay, as described in more detail elsewhere herein. In some respects, the air node described herein is UE 120, is included in UE 120, or includes Figure 2 One or more components of the UE 120 shown. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component can execute or direct, for example Figure 6 The operation of process 600 and / or other processes as described herein. Memory 242 and memory 282 may store data and program code for base station 110 and UE 120, respectively. In some examples, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, the one or more instructions, when executed by one or more processors of base station 110 and / or UE 120 (e.g., directly, or after compilation, transformation, and / or interpretation), may cause one or more processors, UE 120, and / or base station 110 to perform or direct, for example... Figure 6 The operation of process 600 and / or other processes as described herein. In some examples, the execution instructions may include run instructions, transform instructions, compile instructions and / or interpret instructions, etc.

[0049] In some aspects, the air node includes: components for determining one or more beams in a beam set to be silenced to mitigate potential interference associated with transmissions from multiple air nodes to the land UE 120; and / or components for silencing one or more beams while transmitting at least one of a discovery signal or feedback related to emergency message relay service to the land UE. In some aspects, components for the air node to perform the operations described herein may include, for example, one or more of a communications manager 140, antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, controller / processor 280, or memory 282.

[0050] Although Figure 2The boxes in the diagram are illustrated as different components, but the functions described above with respect to these boxes may be implemented in a single hardware, software, or combined component, or in various combinations of components. For example, the functions described with respect to transmit processor 264, receive processor 258, and / or TX MIMO processor 266 may be performed by or under the control of controller / processor 280.

[0051] As indicated above, Figure 2 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 2 The examples described are different.

[0052] Figure 3 This is a diagram illustrating an example of air-to-ground (ATG) communication according to this disclosure.

[0053] like Figure 3 As shown, an ATG network may include one or more ATG UEs and one or more ATG base stations. Each ATG UE may be, may include, an onboard terminal and / or Customer Premises Equipment (CPE) on an air node, or may be included in such an air node, which may be an aircraft (e.g., an airplane), an unmanned vehicle (UAV), a High Altitude Platform Station (HAPS), or another suitable manned or unmanned aerial device. An ATG UE may include one or more components of UE 120 as described elsewhere herein. Thus, as used herein, the term "air node" may refer to an ATG UE, one or more components of an ATG UE, or an aircraft (e.g., an aircraft, UAV, HAPS, etc.) that includes an ATG UE. Each ATG base station (shown as an ATG-BS) may be a terrestrial base station (e.g., a 5G / NR gNB) that transmits signals to and receives signals from an ATG UE. Each ATG-BS may include one or more components of a base station as described elsewhere herein. In some respects, the cell associated with the ATG-BS can have a very wide coverage range, such as up to 300 kilometers (km). In some cases, ATG communication between the ATG-UE and the ATG-BS can use the same frequency band as the terrestrial UE and terrestrial base station in the terrestrial network. For example, as used herein, the term "terrestrial UE" can refer to any suitable UE on the ground that is not an ATG-UE, and the term "terrestrial base station" can refer to any cellular base station that is not an ATG-BS. In some respects, the ATG-UE can be more powerful than the terrestrial UE. For example, the ATG-UE can transmit with a higher effective isotropic radiated power (EIRP) than the terrestrial UE via a higher transmit power and / or a higher onboard antenna gain.

[0054] Therefore, as described herein, ATG communication generally allows a ground-based ATG-BS to communicate with aircraft and onboard equipment (e.g., UEs carried by passengers on the aircraft) connected to a CPE associated with the aircraft. For example, in an ATG network, a ground-based ATG-BS may be equipped with an upward-tilted antenna to communicate with an ATG-UE, and an airborne ATG-UE may use one or more antennas located at the bottom of the aircraft and / or one or more antennas located on the sides of the aircraft to communicate with the ATG-BS (e.g., an ATG-4 antenna configuration may include two antennas at the bottom of the aircraft and one antenna on each side of the aircraft). In some aspects, the aircraft may include a CPE, such as an onboard server and one or more wireless local area network (WLAN) antennas, to communicate with other onboard equipment connected to or traveling on the aircraft. ATG communications can support a variety of service types, such as in-flight passenger communications (e.g., in-flight connectivity during commercial and / or business aviation flights, en route passenger communications, takeoff / landing communications, climb / descent communications, etc.), airline operational communications (e.g., aircraft monitoring and maintenance, flight planning and / or weather), and / or air traffic control communications (e.g., using ATG communications as a backup for systems in aviation-licensed frequency bands).

[0055] like Figure 3 As shown, ATG networks can be deployed in inland (e.g., which may include disaster areas) and / or coastal areas. As further shown, ATG networks can act as primary or secondary connections for airborne nodes. For example, in… Figure 3 In this context, an ATG-UE provided on an aircraft or airborne node (e.g., traveling at an altitude of up to approximately 13 km) may have a primary connection to a first ATG-BS and a secondary connection to a second ATG-BS based on the direction of travel of the airborne node. Alternatively, one or more ATG-UEs may (e.g., when traveling over coastal areas) have a primary connection to an ATG-BS and a secondary connection to a satellite, or (e.g., when traveling over the ocean) have a primary connection to a satellite without a connection to an ATG-BS. Alternatively, as... Figure 3 As shown, HAPS (e.g., airborne nodes traveling at altitudes between approximately 13 km and 22 km) communicating with terrestrial UEs in disaster areas can have a primary connection to satellites and a secondary connection to ATG-BS. ATG communication offers various advantages over satellite communication, such as lower cost, higher throughput, and lower latency.

[0056] As indicated above, Figure 3 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 3 The examples described are different.

[0057] Figure 4 These are illustrations of examples 400 and 450 related to the use of ATG communication to relay emergency messages for terrestrial UEs outside coverage, according to this disclosure.

[0058] As described herein, ATG communication can occur between one or more ATG-BSs located on the ground and one or more aircraft in the air to support various service types, such as in-flight passenger communication, airline operational communication, and / or air traffic control. Furthermore, another potential use case for ATG communication could include relaying emergency messages (sometimes referred to as SOS messages, SOS distress signals, etc.) to terrestrial UEs in areas outside coverage (e.g., in disaster areas where terrestrial cellular communication is disrupted and / or in remote locations where no terrestrial cellular base stations are deployed), as ATG communication can offer various advantages over existing technologies for delivering emergency messages from terrestrial UEs. For example, one existing method for delivering emergency messages is to use satellite services, where mobile satellite phones (sometimes referred to as satellite phones) connect to other telephones or telephone networks via orbiting satellites (e.g., rather than terrestrial cellular sites). While satellite phones can be used to communicate with satellites already in operation, which can reduce time-to-market and / or deployment costs, satellite phones are associated with disadvantages such as stringent antenna and transmit power requirements that necessitate skilled human-assisted operation to point the antenna at the satellite to avoid obstruction. In addition, satellite phones typically lack the ability to send MTC-like messages, and their stringent hardware requirements are often incompatible with the form factor of modern mobile devices.

[0059] Therefore, a potential alternative for satellite service is to deliver emergency messages via a non-terrestrial network (NTN), where a terrestrial UE communicates with a satellite in a regenerative NTN deployment or a transparent NTN deployment. For example, in a regenerative NTN deployment, the terrestrial UE is served by a satellite via a serving link, and the satellite includes a base station or gNB configured to provide coverage of the terrestrial UE's cell. Alternatively, in a transparent NTN deployment (sometimes referred to as a bend-tube NTN deployment), the terrestrial UE communicates with the satellite via a serving link, and the satellite communicates with the gateway via a feeder link to relay communication between the terrestrial UE and the gateway. In general, using NTN to deliver emergency messages sent by a terrestrial UE could potentially address some or all of the drawbacks of satellite telephony, such as the stringent antenna and transmit power requirements requiring skilled human assistance. However, NTN has very high deployment costs (e.g., for launching satellites and deploying gateways), which may limit its widespread deployment.

[0060] Therefore, in some aspects described herein, ATG communication can be used to deliver emergency messages to address the drawbacks associated with satellite phones and / or NTN communication. For example, existing ATG networks have been deployed in various regions, ATG network deployments are underway to increase the areas where ATG communication is enabled, and modified aircraft designs to support ATG communication have been developed and approved by certain aviation authorities. Furthermore, current and ongoing efforts are underway to develop wireless communication standards to define ATG communication protocols, including ATG spectrum requirements and / or technologies to enable coexistence between ATG and terrestrial cellular networks. Therefore, based on current trends, the widespread deployment of globally interoperable ATG networks is anticipated, thereby enabling some aspects described herein to utilize commercial aircraft and / or other airborne nodes to provide emergency message relay services, extending coverage to terrestrial UEs outside of coverage (e.g., in areas without terrestrial base stations and / or in areas where terrestrial base stations are not operational due to disasters, network outages, or other circumstances). For example, as... Figure 4 As shown, an air node providing emergency message relay service can send a discovery signal toward a terrestrial UE located on the ground (e.g., to indicate the availability of the emergency message relay service), can make every effort to relay emergency messages received from the terrestrial UE to the ATG-BS, and / or can send feedback related to the relay of emergency messages to the terrestrial UE.

[0061] In this way, at a typical cruising altitude of approximately 10 km, using aircraft or other airborne nodes and ATG communication enables emergency message relay services over 200 km via line-of-sight (LOS) propagation. Furthermore, although commercial aircraft density may vary by region, commercial aircraft operations are generally quite dense, at least during the day, meaning at least one aircraft will typically be within 50 km to 100 km of the terrestrial UE in the furthest out-of-coverage area. Compared to satellite phone services, ATG communication may require less human assistance to operate the terrestrial UE used to transmit emergency messages and provides the ability to transmit emergency messages using MTC or MTC-like communication. Moreover, compared to NTN, ATG communication avoids the need to launch new satellites, reducing deployment costs and allowing ATG-based emergency message relay services to be deployed more quickly, as only software upgrades are required to configure the ATG CPE to relay emergency messages. However, despite the many benefits of using ATG communication for emergency message relay, ATG communication presents challenges, such as interference experienced at the terrestrial UE when multiple airborne nodes are simultaneously or using the same resources to transmit to the terrestrial UE.

[0062] For example, because aircraft density can be high depending on the region and / or time of day, there are many scenarios where multiple aircraft cover the same or intersecting out-of-coverage areas. For instance, Example 450 depicts a scenario where two relay aircraft are associated with intersecting ground coverage areas, which could lead to interference at the terrestrial UE when both aircraft simultaneously and / or use the same communication resources to transmit to the terrestrial UE. For example, an ATG-based emergency message relay service can be enabled via aircraft-initiated discovery, where the aircraft uses one or more transmit beams to send a wake-up signal, synchronization signal block, or another suitable discovery signal to indicate the ability to relay emergency messages to out-of-coverage terrestrial UEs. Alternatively, an ATG-based emergency message relay service can be enabled via UE-initiated discovery, where an out-of-coverage terrestrial UE sends a discovery signal or emergency message, and the aircraft that detects the discovery signal transmits feedback (e.g., acknowledging the terrestrial UE's transmission of the discovery signal or emergency message) to the terrestrial UE. Therefore, one or more aircraft can be configured to silence one or more beams to mitigate potential interference at the land UE that might otherwise arise when multiple aircraft simultaneously and / or use the same communication resources to transmit discovery signals or feedback related to emergency message relay services. Specifically, as described herein, an aircraft can silence a beam by disabling or configuring one or more components in the transmission chain to prevent signal transmission in the beam-associated direction (e.g., one or more antennas are configured not to transmit signals in the beam-associated direction, or the transmission chain is configured to generate destructive interference to prevent signal transmission in the beam-associated direction).

[0063] However, determining which beams to silence and / or when to silence one or more beams presents further challenges, as aircraft trajectories may intersect, and errors in the aircraft's estimated Global Navigation Satellite System (GNSS) positioning can lead to complex and / or frequent changes to the on / off beam control managed by the ATG-BS. For example, to meet performance-based navigation (PBN) requirements, an aircraft must meet area navigation (RNAV) requirements and / or required navigation performance (RNP) for a certain percentage of the total flight time. For instance, RNAV 1 requirements, applicable to departure procedures (DP) and / or standard destination arrival (STAR), specify that the aircraft must maintain a total systematic error (TSE) below one nautical mile (or 1.8 km) for 95% of the total flight time, and RNAV 2 requirements, applicable en route, specify that the aircraft must maintain a TSE below two nautical miles (or 3.6 km) for 95% of the total flight time. Alternatively, where the aircraft is only subject to RNP, it may need to maintain a TSE below two nautical miles for 99.999% of the total flight time. Generally, TSE can be determined as the sum of Navigation System Error (NSE) (e.g., defining the maximum difference between the estimated and true positions of an aircraft), Flight Technology Error (FTE) (e.g., the distance between the estimated position and the defined path for the aircraft), and Path Definition Error (PDE) (e.g., the distance between the defined path and the desired path for the aircraft). Therefore, signaling is needed in ATG networks to transmit aircraft position reports because NSE, FTE, and / or PDE can generate navigation routes with kilometer-level TSEs, which can lead to difficulties in determining the interference that might occur at a land-based UE at any given time and / or location.

[0064] Therefore, as described herein, potential interference may exist at ground-based UEs in dense aircraft scenarios where multiple airborne nodes share common or intersecting coverage areas on the ground (e.g., due to multiple airborne nodes transmitting discovery signals and / or feedback related to emergency message relay services within these common or intersecting coverage areas). One way to mitigate this potential interference is for airborne nodes to perform beam switching against the beam used to transmit discovery signals or feedback related to emergency message relay services. However, performing beam switching against a ground-based UE while relaying emergency messages to it outside its coverage area may be impractical (e.g., because emergency messages are one-off, very short messages transmitted without a Radio Resource Control (RRC) connection). For example, assuming an aircraft travels at a rate of approximately 250 meters per second, where the ground coverage area is defined as a circle with a diameter of 50 km, the maximum service time for an aircraft against a ground-based UE would be approximately 400 seconds.

[0065] In some respects, when multiple airborne nodes provide emergency message relay services in dense aircraft scenarios, aircraft beam silence can therefore be used to mitigate potential interference at ground-based UEs. For example, when multiple airborne nodes have common or intersecting ground coverage, a potential approach could be to use coordination techniques, similar to inter-cell and / or inter-UE coordination processes performed in an IAB network or another suitable wireless network, to enable transmission by only one aircraft within a common coverage area and / or to configure different aircraft to transmit using different resources. However, due to the very high mobility of aircraft, determining which aircraft to enable and / or which transmission resources to configure can be challenging. Therefore, as referenced herein... Figures 5A to 5D As described in further detail, one or more dynamic aircraft beam muting techniques can be used to avoid or otherwise mitigate interference caused by multiple airborne nodes transmitting discovery signals or feedback to terrestrial UEs outside coverage. In this way, terrestrial UEs outside coverage can more reliably receive and decode discovery signals or feedback related to emergency message relay services.

[0066] As indicated above, Figure 4 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 4 The examples described are different.

[0067] Figures 5A to 5D These are illustrations illustrating various examples of aircraft beam silence associated with multi-aircraft emergency message relay according to this disclosure. For example, as described further in detail herein, Figure 5A Example 500 illustrates an air node providing emergency message relay services that silences only one or more beams that share or intersect with one or more beams of another (adjacent) air node in a ground coverage area. Figure 5B Examples 510-1 and 510-2 illustrate beam silence coordination procedures that can be used to determine which beam to silence in common or intersecting ground coverage areas. Figure 5C Example 520 is illustrated, in which an air node providing emergency message relay service silences any beam directed toward ground coverage areas outside of one or more ground coverage areas mapped to the air node, and Figure 5D Example 530 is illustrated, in which an air node is selected to perform UE-directed transmission behavior specifically related to emergency message relay service, and all other aircraft in the area silence all transmission beams in their transmission beams.

[0068] In some respects, as described in this article, Figures 5A to 5D The various examples shown can be applied to situations where multiple air nodes in an ATG network are providing emergency message relay services and (in Figures 5A to 5DMultiple airborne nodes (shown as relay aircraft) will send discovery signals or feedback related to the emergency message relay service to ( Figures 5A to 5D (Not explicitly shown in the text) Scenarios involving terrestrial UEs outside the coverage area. Specifically, it will be understood that when there are multiple aircraft receiving emergency message transmissions from a terrestrial UE, the terrestrial UE outside the coverage area may not experience interference, and when there is only one aircraft transmitting discovery signals or feedback related to the emergency message relay service, the terrestrial UE outside the coverage area will also not experience interference.

[0069] In some aspects, such as in Figure 5A As illustrated in Example 500, one or more air nodes may silence one or more beams associated with a ground coverage area that is common to or otherwise intersects with the ground coverage area of ​​a beam associated with another air node. For example, in Example 500, a first air node (shown as relay aircraft i) includes a first set of beams, and a second air node (shown as relay aircraft j) includes a second set of beams, wherein the first set and the second set of beams each include one or more beams associated with common or intersecting ground coverage areas. In this case, as described herein, one or more air nodes may silence one or more beams associated with common or intersecting ground coverage areas, such that only one air node is transmitting discovery signals or feedback related to emergency message relay services within the common or intersecting ground coverage area. Furthermore, because the ground UE does not experience interference when only one air node is transmitting to the ground UE, the air node does not silence any beams associated with ground coverage areas that do not intersect with the beams of any adjacent air node. For example, when multiple adjacent air nodes exist in a given area or region, some beams from different air nodes may intersect in their ground coverage, while other beams from different air nodes may not intersect. Therefore, in Example 500, the air node providing emergency message relay service only needs to silence beams that might potentially cause interference at terrestrial UEs, where such beams are those with common or intersecting ground coverage areas. In this way, silencing only beams with common or intersecting ground coverage areas can provide a large coverage area for discovery signals or feedback transmitted using other beams that do not potentially cause interference at terrestrial UEs.

[0070] In some respects, as described herein, the determination of which beams to silence in common or intersecting ground coverage areas can be highly dynamic due to the high mobility of airborne nodes providing emergency message relay services. Therefore, in some respects, various techniques can be used to determine whether potential interference is possible at the terrestrial UE, and if so, to further determine which beams should be silenced to mitigate the potential interference. For example, in some respects, a control node (e.g., an ATG-BS, satellite, and / or an airborne node designated as the aircraft leader) can (e.g., based on the aircraft route) analyze planned trajectories for different airborne nodes to determine when and where the beams of different airborne nodes are predicted to have intersecting ground coverage areas. The control node can then send information related to time- and location-based triggering to the airborne nodes during their flight, where one or more beams will be silenced. For example, in the case where a first beam of a first airborne node and a second beam of a second airborne node are predicted to have intersecting ground coverage areas during a specific time period, the control node can determine the projected location of the corresponding airborne node during the time period during which the first and second beams are predicted to have intersecting ground coverage areas. The control node can then be configured with time- and location-based triggering to silence either the first or second beam during the time period in which the first and second beams are predicted to have intersecting ground coverage areas, and at the projected location where the first and second beams are predicted to have intersecting ground coverage areas.

[0071] For example, in some aspects, the control node can determine which beam to silence (such that only one air node performs transmission toward the terrestrial UE within any given coverage area on the ground) based on one or more beam priority rules. For example, in some aspects, one or more beam priority rules can specify that when a first beam associated with a first air node and a second beam associated with a second air node have intersecting ground coverage areas, the beam associated with the air node at a lower altitude has higher priority (e.g., the beam associated with the air node at a higher altitude is silenced). In this way, the radio channel from the air node at a lower altitude can have minimal impact from atmospheric absorption or attenuation. Alternatively or additionally, one or more beam priority rules can specify that when a first beam associated with a first air node and a second beam associated with a second air node have intersecting ground coverage areas, the beam associated with the air node having a shorter line-of-sight path to the ground or lower path loss has higher priority (e.g., the beam with a longer line-of-sight path or higher path loss is silenced). In this manner, a terrestrial UE can receive discovery signals or feedback transmitted using an unsilenced beam with the maximum RSRP. Alternatively, one or more beam priority rules can be specified such that, when a first beam associated with a first air node and a second beam associated with a second air node have intersecting ground coverage areas, the beam associated with the air node with the lower speed has higher priority (e.g., the beam associated with the air node with the higher speed is silenced). This reduces the Doppler shift of discovery signals or feedback transmitted using the unsilenced beam, which improves decoding performance for receiving terrestrial UEs. Alternatively, one or more beam priority rules can be specified such that, when a first beam associated with a first air node and a second beam associated with a second air node have intersecting ground coverage areas, the beam associated with the air node with lower turbulence has higher priority (e.g., the beam associated with the air node with higher turbulence is silenced). This maximizes the stability of discovery signals or feedback transmitted using the unsilenced beam, which also improves decoding performance for receiving terrestrial UEs.

[0072] Furthermore, as described herein, airborne nodes in an ATG network may be associated with significant positioning errors, where the actual positioning of an airborne node at any given time may deviate from its planned trajectory by up to 3.6 km (e.g., because an aircraft can have a TSE of up to two (2) nautical miles and still satisfy any applicable PBN, RNAV, and / or RNP parameters). Therefore, in addition to the control node configuration of time / location-based triggering to define when and where an airborne node should silence one or more beams and which beams should be silenced during such times and locations, the beams to be silenced can also be determined or modified during a beam silence coordination process that can be triggered when one or more conditions are met. For example, as in Figure 5B As illustrated in Example 510-1, air nodes can communicate during a distributed beam silence coordination process to determine, based on real-time coordination information related to the motion state of the air nodes, whether an air node includes a beam with intersecting ground coverage areas and which of the intersecting beams should be silenced. Alternatively, Example 510-2 illustrates a centralized beam silence coordination process in which multiple air nodes communicate with a control node, which then determines whether these air nodes include beams with intersecting ground coverage areas and which of the intersecting beams should be silenced.

[0073] For example, in some aspects, a distributed and / or centralized beam-silent coordination process can be triggered when one or more conditions related to the real-time positioning of airborne nodes indicate a need to improve the accuracy of time / location-based triggering of planned trajectories based on airborne nodes. For example, in some aspects, the distributed and / or centralized beam-silent coordination process can be triggered based on a control node (e.g., an ATG-BS, satellite, or aircraft leader) performing the following: calculating the distance between airborne nodes in the same three-dimensional region (e.g., the same airspace) based on a real-time positioning report indicating the three-dimensional positioning of the airborne nodes, and determining that the distance between at least one pair of airborne nodes meets (e.g., is below) a threshold. In this case, the control node can notify the airborne nodes that the condition is met, which can trigger the distributed and / or centralized beam-silent coordination process. Alternatively or additionally, the distributed and / or centralized beam-silent coordination process can be triggered based on a first airborne node receiving a signal (e.g., an inter-aircraft discovery signal, a detection signal, or another suitable signal) from a second airborne node that has an RSRP that meets (e.g., equals and / or exceeds) a threshold. Alternatively, the beam silence coordination process may be triggered based on a first air node detecting a second air node using radar equipped on the first air node and determining that the distance between the first and second air nodes meets (e.g., is below) a threshold. Alternatively, in the case where multiple air nodes are covered by the same satellite beam, the beam silence coordination process can be triggered, which can be determined by inter-vehicle communication indicating which satellite beam covers each air node and / or by the satellite sending appropriate instructions to air nodes communicating with the satellite using the same beam.

[0074] In some aspects, as illustrated in Examples 510-1 and 510-2, determining whether two or more beams with intersecting ground coverage areas exist and / or which beams should be silenced can be based on coordination information provided by one or more air nodes. For example, in some aspects, the coordination information may include information related to the motion state of the air node providing the coordination information, where motion state generally refers to information describing positioning, orientation, and / or motion status. For example, the coordination information provided by the air node during a distributed and / or centralized beam silencing coordination process may include the air node's positioning, orientation or (e.g., attitude angles about pitch, roll, and yaw axes), direction of travel of the air node, rate or velocity of travel of the air node, and / or turbulence conditions associated with the air node, etc.

[0075] Therefore, in the distributed beam silence coordination process illustrated in Example 510-1, the first air node (shown as relay aircraft i) can send coordination information to the second air node (shown as relay aircraft i) (e.g., as sidelink control information via the PC5 interface when the distributed beam silence coordination process is configured for inter-UE sidelink coordination, or as downlink control information via the Uu interface when the distributed beam silence coordination process is configured for inter-cell coordination). The second air node can then identify any beams of the second air node that have intersecting coverage areas with one or more beams of the first air node, and the second air node can determine one or more beams of the second air node to be silenced based on the priority rules described herein (e.g., if the second air node has a higher altitude, longer line-of-sight path, higher path loss, higher speed, and / or higher turbulence conditions than the first air node, then the intersecting beams of the second air node are silenced). Furthermore, in the distributed beam silence coordination process, a similar determination can be made by the first air node based on the coordination information provided by the second air node.

[0076] Alternatively or concurrently, in the centralized beam silence coordination process illustrated in Example 510-2, the control node can determine which aircraft beams should be silenced based on coordination information provided by multiple air nodes. For example, as shown, different air nodes can send coordination information to the control node (e.g., via the PC5 or Uu interface when the control node is the aircraft leader and the coordinating air node is configured as a UE-type or IAB node, or via the Uu interface when the control node is an ATG-BS or satellite). Therefore, in the centralized beam silence coordination process, the control node can identify beams of different air nodes with intersecting coverage areas among the air nodes that have reported coordination information to the control node, and the control node can determine one or more beams to be silenced for each air node based on the priority rules described herein (e.g., among multiple beams with intersecting ground coverage areas, silence all intersecting beams except those of the air node with the lowest altitude, shortest line-of-sight path, lowest path loss, lowest speed, and / or lowest turbulence state). Therefore, the control node can send an instruction to each air node to indicate which beams should be silenced, and the air node that receives the instruction can then silence the indicated beams.

[0077] Generally, as described herein, beam silencing only those beams associated with intersecting ground coverage areas can provide a large coverage area for discovery signals and / or feedback, which the air node transmits to the ground UE to enable emergency message relay service (e.g., by enabling transmission via all beams that do not intersect with the beams of another air node). However, due to the kilometer-level positioning errors and high mobility of air nodes in ATG networks, determining whether, when, and / or where to silence intersecting beams, and which intersecting beams to silence, is highly dynamic and subject to complex decision rules (e.g., using planned trajectory-based triggering and additional coordination procedures to improve accuracy due to aircraft mobility and / or positioning errors). Furthermore, when using distributed and / or centralized beam silencing coordination procedures, the beam silencing coordination procedures introduce additional signaling and indications that may lead to congestion, interference, or other adverse conditions. Therefore, some aspects described herein can simplify the techniques used to determine whether to silence one or more beams and / or which beams to silence.

[0078] For example, refer to Figure 5CExample 520 relates to aircraft beam silencing configuration, where ground area identifier mapping is used to assist air nodes in determining which beams to silence. Specifically, each air node in an ATG network can be mapped to one or more ground area identifiers, where each ground area identifier can correspond to an area outside cellular coverage (e.g., such that any terrestrial UE in that area will be outside coverage). Alternatively or concurrently, ground area identifiers can correspond to areas associated with poor cellular coverage (e.g., LTE-only coverage, poor NR coverage, etc.) and / or can overlap with one or more cellular coverage areas. In any case, each air node can be mapped to one or more ground areas, and each air node can silence any beam directed outside the one or more ground areas mapped to the air node. In some aspects, the mapping between air nodes and one or more ground areas can be performed via inter-aircraft coordination (e.g., where each air node indicates location or provides other coordination information to neighboring air nodes via a Uu or PC5 interface, and each air node computes the mapping locally using one or more configuration algorithms). Alternatively, the mapping between air nodes and ground areas can be controlled by a control node (e.g., ATG-BS, satellite, or aircraft leader), where different air nodes indicate their location or provide other coordination information to the control node, which then calculates a ground area mapping for each air node and indicates the calculated ground area mapping to each corresponding air node. Alternatively, the initial ground area mapping can be configured based on predictions based on the planned trajectories of the air nodes and can be dynamically updated based on aircraft location reports in a manner similar to that described herein. In this way, ground area mapping can ensure that only one air node is performing UE-directed transmission actions (e.g., transmitting discovery signals or feedback) related to emergency message relay services within any ground area. Furthermore, using ground area mapping to determine which beams to silence and which beams to use for UE-directed transmissions can have lower complexity and require less signaling compared to simply dynamically silencing beams with intersecting ground coverage areas.

[0079] Alternatively or at another location, please refer to Figure 5DExample 530 relates to an aircraft beam silence configuration, in which an air node can be configured to exclusively perform UE-oriented transmission behavior related to emergency message relay services within a given area, and any other nearby air nodes silence all beams in their beams to avoid interference at terrestrial UEs within the given area. For example, in some aspects, the air node designated to exclusively perform UE-oriented transmission behavior in a given area can be determined by air nodes in a distributed process, where air nodes exchange coordination information (e.g., positioning, attitude angles, orientation, speed, etc.) and apply one or more priority rules to determine which air node has the highest priority. Alternatively or concurrently, the air node designated to exclusively perform UE-oriented transmission behavior in a given area can be determined by a control node in a centralized process based on coordination information provided by different air nodes and based on one or more priority rules.

[0080] For example, among multiple air nodes in the same three-dimensional airspace, one or more priority rules can specify that the air node with the shortest distance, lowest path loss to the land UE, and / or lowest altitude has the highest priority. In this example, the location of the land UE can be roughly estimated based on the direction of the received beam (e.g., indicating the orientation of the land UE relative to the air node) and the location of the air node. In this way, configuring the air node to have the shortest distance, lowest path loss to the land UE, and / or lowest altitude can provide higher received power to the land UE. Alternatively, one or more priority rules can specify that among multiple aircraft in the same three-dimensional airspace, the air node with the lowest speed has the highest priority, which can provide a smaller possible Doppler shift to improve reception and decoding performance at the land UE. Alternatively, one or more priority rules can specify that among multiple aircraft in the same three-dimensional airspace, the air node that enters the area outside the coverage of the land UE earlier has the highest priority, which can reduce the latency associated with emergency message relay services by initiating relay communication earlier. Alternatively, one or more priority rules may be specified that, among multiple aircraft in the same three-dimensional airspace, the airborne node with the longest remaining time in the area outside the coverage of the land UE has the highest priority. This can increase the amount of time that the emergency message relay service can be used for land UEs outside the coverage.

[0081] As indicated above, Figures 5A to 5D This is provided as an example. Other examples are available with reference to [the relevant information]. Figures 5A to 5D The examples described are different.

[0082] Figure 6This is a diagram illustrating an example procedure 600 performed, for example, by an air node according to this disclosure. Example procedure 600 is where an air node (e.g., referred to above) is... Figures 3 to 4 and Figures 5A to 5D The described air node is an example of an operation associated with aircraft beam silence for multi-aircraft emergency message relay.

[0083] like Figure 6 As shown, in some aspects, process 600 may include identifying one or more beams (box 610) within a beam set to be silenced to mitigate potential interference associated with transmissions from multiple air nodes to a land-based UE. For example, air nodes (e.g., using...) Figure 7 The communication manager 140 and / or beam muting component 708 described herein can identify one or more beams in the beam set to be muted to mitigate potential interference associated with multiple air nodes transmitting to the ground UE, as described above.

[0084] like Figure 6 The diagram further illustrates that, in some aspects, process 600 may include muting one or more beams (box 620) while sending at least one of a discovery signal or feedback related to emergency message relay service to a terrestrial UE. For example, an air node (e.g., using...) Figure 7 The communication manager 140 and / or beam silencing component 708 described herein can silence one or more beams while sending at least one of a discovery signal or feedback related to the emergency message relay service to a land UE, as described above.

[0085] Process 600 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0086] In the first aspect, one or more silent beams are directed toward the ground coverage area that intersects with one or more beams of adjacent air nodes.

[0087] In a second aspect, either alone or in combination with the first aspect, process 600 includes receiving one or more triggers from a control node, the one or more triggers being used to define one or more times for one or more beams to be silenced or one or more locations for one or more beams of an air node to be silenced.

[0088] In the third aspect, either alone or in combination with one or more of the first and second aspects, one or more beams to be silenced are determined during a beam silence coordination process that is triggered at least in part based on a message from the control node indicating that the distance between the air node and its neighboring air nodes meets a threshold.

[0089] In the fourth aspect, individually or in combination with one or more of the first to third aspects, one or more beams to be silenced are determined during a beam silence coordination process that is triggered at least in part based on a reference signal received power measurement from a neighboring air node that satisfies a threshold.

[0090] In the fifth aspect, individually or in combination with one or more of the first to fourth aspects, one or more beams to be silenced are determined during a beam silence coordination process that is triggered at least in part based on radar detection that the distance between an air node and its neighboring air nodes meets a threshold.

[0091] In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, one or more beams to be silenced are determined during a beam silence coordination process that is triggered at least in part based on the fact that air nodes and adjacent air nodes are covered by a common satellite beam.

[0092] In the seventh aspect, determining one or more beams to be silenced, either alone or in combination with one or more of the first to sixth aspects, includes: receiving coordination information from a neighboring air node indicating one or more parameters related to the motion state of the neighboring air node; determining, at least in part based on the coordination information, a subset of beams in the beam set oriented toward a ground coverage area intersecting with one or more beams of the neighboring air node; and determining, at least in part based on one or more priority rules, one or more beams to be silenced in the beam subset.

[0093] In the eighth aspect, either alone or in combination with one or more of the first to seventh aspects, one or more priority rules indicate that, among the first and second beams oriented toward intersecting ground coverage areas, the beam with the lower-altitude air node has higher priority.

[0094] In the ninth aspect, either alone or in combination with one or more of the first to eighth aspects, one or more priority rules indicate that, among the first and second beams oriented toward intersecting ground coverage areas, the beam with a shorter line-of-sight path to the land UE or a lower path loss has a higher priority.

[0095] In the tenth aspect, either alone or in combination with one or more of the first to ninth aspects, one or more priority rules indicate that, among the first and second beams oriented toward intersecting ground coverage areas, the beam with the lower speed of the airborne node has higher priority.

[0096] In the eleventh aspect, either alone or in combination with one or more of the first to tenth aspects, one or more priority rules indicate that, among the first and second beams oriented toward intersecting ground coverage areas, the beam with the air node having a lower turbulence state has a higher priority.

[0097] In the twelfth aspect, determining one or more beams to be silenced, either alone or in combination with one or more of the first to eleventh aspects, includes: sending coordination information to a control node indicating one or more parameters related to the motion state of an air node; and receiving information from the control node indicating one or more beams to be silenced, at least in part based on the coordination information.

[0098] In the thirteenth aspect, either alone or in combination with one or more of the first to twelfth aspects, determining one or more beams to be silenced includes determining one or more ground areas mapped to an air node, wherein the one or more beams to be silenced are oriented toward one or more ground areas outside the one or more ground areas mapped to the air node.

[0099] In the fourteenth aspect, either alone or in combination with one or more of the first to thirteenth aspects, determining one or more beams to be silenced includes receiving coordinated information from adjacent air nodes indicating one or more parameters related to the motion state of adjacent air nodes, wherein one or more ground areas mapped to air nodes are determined at least in part based on the coordinated information.

[0100] In the fifteenth aspect, determining one or more beams to be silenced, either alone or in combination with one or more of the first to fourteenth aspects, includes: sending coordination information to a control node indicating one or more parameters relating to the motion state of the air node; and receiving from the control node information indicating one or more ground areas of the air node that are mapped at least in part based on the coordination information.

[0101] In the sixteenth aspect, determining one or more beams to be silenced, either alone or in combination with one or more of the first to fifteenth aspects, includes: receiving coordination information from a neighboring air node indicating one or more parameters related to the motion state of the neighboring air node; and determining, at least in part, based on the coordination information and one or more priority rules, that the neighboring air node should specifically perform transmission behavior toward a land UE for the Emergency Message Relay Service, wherein the one or more beams to be silenced include each beam in the beam set at least in part based on the determination that the neighboring air node should specifically perform transmission behavior toward a land UE for the Emergency Message Relay Service.

[0102] In the seventeenth aspect, either alone or in combination with one or more of the first to sixteenth aspects, one or more priority rules indicate that among the first and second air nodes supporting emergency message relay services, the air node with lower altitude, shorter distance to the land UE, or lower path loss to the land UE has higher priority.

[0103] In the eighteenth aspect, alone or in combination with one or more of the first to seventeenth aspects, one or more priority rules indicate that among the first and second air nodes supporting the emergency message relay service, the air node with the lower speed has a higher priority.

[0104] In the nineteenth aspect, either alone or in combination with one or more of the first to eighteenth aspects, one or more priority rules indicate that, among the first and second air nodes supporting emergency message relay services, the air node that enters the ground coverage area of ​​the terrestrial UE earlier has a higher priority.

[0105] In the twentieth aspect, either alone or in combination with one or more of the first to nineteenth aspects, one or more priority rules indicate that among the first and second air nodes supporting emergency message relay services, the air node with a longer remaining time within the ground coverage area of ​​the terrestrial UE has a higher priority.

[0106] In the twenty-first aspect, individually or in combination with one or more of the first to twentieth aspects, one or more beams to be silenced are at least partially based on messages from the control node instructing adjacent air nodes to specifically perform transmission behavior toward the land UE for the emergency message relay service to include each beam in the beam set.

[0107] although Figure 6 An example box of process 600 is shown, but in some respects, process 600 may include... Figure 6 The boxes depicted in the diagram may be compared to additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner. Alternatively, two or more boxes in the process 600 may be executed in parallel.

[0108] Figure 7This is a diagram of an example device 700 for wireless communication. Device 700 may be an air node, or an air node may include device 700. In some aspects, device 700 includes a receiving component 702 and a transmitting component 704 that can communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, device 700 can use the receiving component 702 and the transmitting component 704 to communicate with another device 706 (such as a UE, a base station, or another wireless communication device). As further shown, device 700 may include a communication manager 140. Communication manager 140 may include a beam silence component 708, etc.

[0109] In some respects, device 700 can be configured to perform the functions described herein. Figures 5A to 5D The described one or more operations. Additionally or alternatively, the apparatus 700 may be configured to perform one or more processes described herein, such as Figure 6 The process is 600. In some respects, Figure 7 The device 700 and / or one or more components shown may include a combination Figure 2 One or more components of the described UE. Additionally or alternatively, Figure 7 One or more components shown can be combined Figure 2 Implemented within one or more of the described components. Alternatively or additionally, one or more components of the set of components may be implemented at least partially as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of the component.

[0110] Receiver 702 may receive communications from device 706, such as reference signals, control information, data communications, or combinations thereof. Receiver 702 may provide the received communications to one or more other components of device 700. In some aspects, receiver 702 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding), and may provide the processed signals to one or more other components of device 700. In some aspects, receiver 702 may include combinations of... Figure 2 The described air node includes one or more antennas, modems, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0111] Transmitting component 704 can transmit communications to device 706, such communications as reference signals, control information, data communications, or combinations thereof. In some aspects, one or more other components of device 700 can generate communications and provide the generated communications to transmitting component 704 for transmission to device 706. In some aspects, transmitting component 704 can perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding) on ​​the generated communications and can transmit the processed signals to device 706. In some aspects, transmitting component 704 may include combinations of... Figure 2 The described air node includes one or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. In some aspects, the transmit component 704 may be co-located with the receive component 702 in a transceiver.

[0112] Beam silencing component 708 can identify one or more beams in a beam set to be silenced to mitigate potential interference associated with transmissions from multiple air nodes to a land-based UE. Beam silencing component 708 can silence one or more beams while transmitting at least one of a discovery signal or feedback related to emergency message relay service to a land-based UE.

[0113] The receiving component 702 can receive one or more triggers from the control node, which define one or more times when one or more beams are to be silenced or one or more locations where one or more beams of an air node are to be silenced.

[0114] Figure 7 The number and arrangement of components shown are provided as an example. In reality, they can exist in combination with... Figure 7 The components shown are compared to additional components, fewer components, different components, or components arranged in a different manner. Furthermore, Figure 7 The two or more components shown can be implemented within a single component, or Figure 7 The single component shown can be implemented as multiple distributed components. Alternatively, Figure 7 The collection of (one or more) components shown can perform actions described as being performed by Figure 7 Another set of components shown performs one or more functions.

[0115] The following provides an overview of some aspects of this disclosure:

[0116] Aspect 1: A wireless communication method performed by an air node, comprising: determining, within a beam set, one or more beams to be silenced to mitigate potential interference associated with transmissions from multiple air nodes to a terrestrial UE; and silencing the one or more beams while transmitting at least one of a discovery signal or feedback related to an emergency message relay service to the terrestrial UE.

[0117] Aspect 2: According to the method of aspect 1, wherein the one or more beams to be silenced are oriented toward a ground coverage area that intersects with one or more beams of an adjacent air node.

[0118] Aspect 3: The method according to any one of Aspects 1 to 2 further includes: receiving one or more triggers from a control node, the one or more triggers being used to define one or more times for the one or more beams to be silenced or one or more locations of the air node where the one or more beams are to be silenced.

[0119] Aspect 4: The method according to any one of Aspects 1 to 3, wherein the one or more beams to be silenced are determined during a beam silence coordination process, which is triggered at least in part based on a message from a control node indicating that the distance between the air node and its neighboring air nodes meets a threshold.

[0120] Aspect 5: The method according to any one of Aspects 1 to 4, wherein the one or more beams to be silenced are determined during a beam silence coordination process, said beam silence coordination process being triggered at least in part based on a signal received from a neighboring air node having a reference signal received power measurement that satisfies a threshold.

[0121] Aspect 6: The method according to any one of Aspects 1 to 5, wherein the one or more beams to be silenced are determined during a beam silence coordination process, said beam silence coordination process being triggered at least in part based on radar detection that the distance between the air node and its neighboring air nodes meets a threshold.

[0122] Aspect 7: The method according to any one of Aspects 1 to 6, wherein the one or more beams to be silenced are determined during a beam silence coordination process that is triggered at least in part based on the fact that the air node and adjacent air nodes are covered by a common satellite beam.

[0123] Aspect 8: The method according to any one of Aspects 1 to 7, wherein determining the one or more beams to be silenced comprises: receiving from a neighboring air node coordination information indicating one or more parameters related to the motion state of the neighboring air node; determining, at least in part based on the coordination information, a subset of beams oriented toward a ground coverage area intersecting with one or more beams of the neighboring air node; and determining, at least in part based on one or more priority rules, the one or more beams to be silenced in the subset of beams.

[0124] Aspect 9: According to the method of aspect 8, wherein the one or more priority rules indicate that, among the first and second beams oriented toward intersecting ground coverage areas, the beam of the air node with the lower altitude has a higher priority.

[0125] Aspect 10: The method according to any one of Aspects 8 to 9, wherein the one or more priority rules indicate that, among the first and second beams oriented toward the intersecting ground coverage areas, the beam of the air node having a shorter line-of-sight path or lower path loss to the land UE has a higher priority.

[0126] Aspect 11: The method according to any one of Aspects 8 to 9, wherein the one or more priority rules indicate that, among the first and second beams oriented toward intersecting ground coverage areas, the beam of the air node with lower speed has higher priority.

[0127] Aspect 12: The method according to any one of Aspects 8 to 9, wherein the one or more priority rules indicate that, among the first and second beams oriented toward intersecting ground coverage areas, the beam of the air node having a lower turbulence state has a higher priority.

[0128] Aspect 13: The method according to any one of Aspects 1 to 7, wherein determining the one or more beams to be silenced comprises: sending coordination information to a control node indicating one or more parameters relating to the motion state of the air node; and receiving from the control node information indicating the one or more beams to be silenced at least in part based on the coordination information.

[0129] Aspect 14: According to the method of aspect 1, wherein determining the one or more beams to be silenced comprises: determining one or more ground areas mapped to the air node, wherein the one or more beams to be silenced are oriented toward one or more ground areas outside the one or more ground areas mapped to the air node.

[0130] Aspect 15: According to the method of aspect 14, determining the one or more beams to be silenced includes: receiving coordination information from a neighboring air node indicating one or more parameters related to the motion state of the neighboring air node, wherein the one or more ground areas mapped to the air node are determined at least in part based on the coordination information.

[0131] Aspect 16: According to the method of aspect 14, determining the one or more beams to be silenced includes: sending coordination information to a control node indicating one or more parameters related to the motion state of the air node; and receiving from the control node information indicating that the one or more ground areas of the air node are mapped at least in part based on the coordination information.

[0132] Aspect 17: According to the method of Aspect 1, wherein determining the one or more beams to be silenced comprises: receiving from a neighboring air node coordination information indicating one or more parameters related to the motion state of the neighboring air node; and determining, at least in part, based on the coordination information and one or more priority rules, that the neighboring air node should specifically perform a transmission action toward the land UE for the Emergency Message Relay Service, wherein the one or more beams to be silenced include each beam in the beam set based at least in part on determining that the neighboring air node should specifically perform a transmission action toward the land UE for the Emergency Message Relay Service.

[0133] Aspect 18: According to the method of aspect 17, wherein the one or more priority rules indicate that among the first and second air nodes supporting the emergency message relay service, the air node with lower altitude, shorter distance to the land UE, or lower path loss to the land UE has higher priority.

[0134] Aspect 19: The method according to any one of Aspects 17 to 18, wherein the one or more priority rules indicate that, among the first and second air nodes supporting the emergency message relay service, the air node with a lower speed has a higher priority.

[0135] Aspect 20: The method according to any one of Aspects 17 to 19, wherein the one or more priority rules indicate that, among the first and second air nodes supporting the emergency message relay service, the air node that enters the ground coverage area of ​​the land UE earlier has a higher priority.

[0136] Aspect 21: The method according to any one of Aspects 17 to 20, wherein the one or more priority rules indicate that, among the first and second air nodes supporting the emergency message relay service, the air node with a longer remaining time in the ground coverage area of ​​the terrestrial UE has a higher priority.

[0137] Aspect 22: According to the method of aspect 1, wherein the one or more beams to be silenced are at least partially based on a message from the control node instructing adjacent air nodes to specifically perform transmission behavior toward the land UE for the emergency message relay service to include each beam in the beam set.

[0138] Aspect 23: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to one or more of aspects 1 to 22.

[0139] Aspect 24: A device for wireless communication, comprising: a memory; and one or more processors coupled to the memory, the one or more processors being configured to perform the method according to one or more of aspects 1 to 22.

[0140] Aspect 25: An apparatus for wireless communication, comprising at least one component for performing the method according to one or more of aspects 1 to 22.

[0141] Aspect 26: A non-transitory computer-readable medium storing code for wireless communication, said code including instructions executable by a processor to perform the methods described in one or more of aspects 1 to 22.

[0142] Aspect 27: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method according to one or more of aspects 1 to 22.

[0143] While the foregoing disclosure provides examples and descriptions, it is not intended to be exhaustive or to limit aspects to the precise form disclosed. Modifications and variations can be made based on the foregoing disclosure, or from various aspects of practice.

[0144] As used herein, the term "component" is intended to be interpreted broadly as hardware and / or a combination of hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, "software" should be interpreted broadly as meaning instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, and / or functions, etc. As used herein, a "processor" is implemented in hardware and / or a combination of hardware and software. It will be apparent to those skilled in the art that the systems and / or methods described herein can be implemented in various forms of hardware and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods is not limiting in any way. Therefore, no specific software code is referred to in this document to describe the operation and behavior of the systems and / or methods, as those skilled in the art will understand that the software and hardware can be designed, at least in part, based on the descriptions herein, to implement the systems and / or methods.

[0145] As used in this article, depending on the context, "meets the threshold" can mean a value greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc.

[0146] Although specific combinations of features are set forth in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. Many of these features may be combined in ways not specifically set forth in the claims and / or not disclosed in the specification. The disclosure of various aspects includes each dependent claim in combination with each other claim in the set of claims. As used herein, the phrase “at least one of” in the list of items refers to any combination of these items (including a single member). As an example, “at least one of a, b, or c” is intended to cover a, b, c, a+b, a+c, b+c, and a+b+c, as well as any combination with multiple of the same element (e.g., a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c, and c+c+c, or any other ordering of a, b, and c).

[0147] No element, action, or instruction used herein should be construed as essential or necessary unless explicitly stated otherwise. Furthermore, as used herein, the articles “a” and “an” are intended to include one or more items and are interchangeable with “one or more”. Furthermore, as used herein, the article “described” is intended to include one or more items mentioned in connection with the article “described” and is interchangeable with “one or more”. Furthermore, as used herein, the terms “set” and “group” are intended to include one or more items and are interchangeable with “one or more”. If only one item is desired, the phrase “only one” or similar terminology will be used. Furthermore, as used herein, the terms “have,” “possess,” “have,” etc., are intended to be open-ended terms that do not limit the elements they modify (e.g., “having” an element of A may also have B). Furthermore, the phrase “based on” is intended to mean “at least partially based on” unless otherwise explicitly stated. Furthermore, as used herein, the term “or” is intended to be open-ended when used in a series and is interchangeable with “and / or” unless otherwise expressly stated (e.g., if used in conjunction with “any” or “only one”).

Claims

1. An air node for wireless communication, comprising: Memory; and One or more processors, said one or more processors being coupled to the memory and configured to: One or more beams in the beam set are identified to be silenced to mitigate potential interference associated with transmissions from multiple air nodes to terrestrial user equipment (UE). as well as While sending at least one of the discovery signals or feedback related to the emergency message relay service to the land UE, the one or more beams are silenced.

2. The air node of claim 1, wherein the one or more beams to be silenced are oriented toward a ground coverage area that intersects with one or more beams of an adjacent air node.

3. The air node of claim 1, wherein the one or more processors are further configured to: Receive one or more triggers from the control node, the one or more triggers being used to define one or more times when the one or more beams are to be silenced or one or more locations of the air node where the one or more beams are to be silenced.

4. The air node of claim 1, wherein the one or more beams to be silenced are determined during a beam silence coordination process, said beam silence coordination process being triggered at least in part based on one or more of the following: A message from the control node indicating that the distance between the air node and its neighboring air nodes meets a threshold. The signal received from the adjacent air node, which has a reference signal that meets the threshold, is used for power measurement. The radar detects that the distance between the air node and its neighboring air nodes meets a threshold, or The air nodes and adjacent air nodes are covered by a common satellite beam.

5. The air node of claim 1, wherein, in order to determine the one or more beams to be silenced, the one or more processors are configured to: Receive coordination information from neighboring air nodes that indicates one or more parameters related to the motion state of the neighboring air nodes; At least in part based on the coordination information, a subset of beams oriented toward ground coverage areas that intersect with one or more beams of the adjacent air node is determined from the beam set; as well as The one or more beams to be silenced in the subset of beams are determined, at least in part, based on one or more priority rules.

6. The air node of claim 5, wherein the one or more priority rules indicate that, among the first and second beams oriented toward the intersecting ground coverage area, the beam of the air node having lower altitude, shorter line-of-sight path to the land UE or lower path loss, lower speed or lower turbulence state has higher priority.

7. The air node of claim 1, wherein, in order to determine the one or more beams to be silenced, the one or more processors are configured to: Sending coordination information to the control node, indicating one or more parameters related to the motion state of the air node; and The control node receives information indicating, at least in part, which of the one or more beams should be silenced based on the coordination information.

8. The air node of claim 1, wherein, in order to determine the one or more beams to be silenced, the one or more processors are configured to: One or more ground areas are identified that are mapped to the air node, wherein the one or more beams to be silenced are directed toward one or more ground areas outside the one or more ground areas mapped to the air node.

9. The air node of claim 8, wherein, in order to determine the one or more beams to be silenced, the one or more processors are configured to: Coordination information is received from neighboring air nodes, indicating one or more parameters related to the motion state of the neighboring air nodes, wherein the one or more ground areas mapped to the air nodes are determined at least in part based on the coordination information.

10. The air node of claim 8, wherein, in order to determine the one or more beams to be silenced, the one or more processors are configured to: Sending coordination information to the control node, indicating one or more parameters related to the motion state of the air node; and The control node receives information indicating that it is mapped to one or more ground zones of the air node, at least in part, based on the coordination information.

11. The air node of claim 1, wherein, in order to determine the one or more beams to be silenced, the one or more processors are configured to: Receive coordination information from neighboring air nodes indicating one or more parameters related to the motion state of the neighboring air nodes; and The neighboring air nodes are determined to perform transmissions toward the terrestrial UE specifically for the Emergency Message Relay Service based at least in part on the coordination information and one or more priority rules, wherein the one or more beams to be silenced include each beam in the beam set based at least in part on the determination that the neighboring air nodes are to perform transmissions toward the terrestrial UE specifically for the Emergency Message Relay Service.

12. The air node of claim 11, wherein the one or more priority rules indicate that, among the first and second air nodes supporting the emergency message relay service, the air node with lower altitude, shorter distance to the land UE, lower path loss to the land UE, or lower speed has higher priority.

13. The air node of claim 11, wherein the one or more priority rules indicate that, among the first and second air nodes supporting the emergency message relay service, the air node that enters the ground coverage area of ​​the land UE earlier or the air node that has a longer remaining time in the ground coverage area of ​​the land UE has a higher priority.

14. The air node of claim 1, wherein the one or more beams to be silenced are at least partially based on a message from the control node instructing neighboring air nodes to specifically perform transmission behavior toward the land UE for the emergency message relay service to include each beam in the beam set.

15. A method for wireless communication performed by an air node, comprising: One or more beams in the beam set are identified to be silenced to mitigate potential interference associated with transmissions from multiple air nodes to terrestrial user equipment (UE). And while sending at least one of the discovery signals or feedback related to the emergency message relay service to the land UE, the one or more beams are silenced.

16. The method of claim 15, wherein the one or more beams to be silenced are oriented toward a ground coverage area that intersects with one or more beams of an adjacent air node.

17. The method of claim 15, further comprising: Receive one or more triggers from the control node, the one or more triggers being used to define one or more times when the one or more beams are to be silenced or one or more locations of the air node where the one or more beams are to be silenced.

18. The method of claim 15, wherein the one or more beams to be silenced are determined during a beam silence coordination process, said beam silence coordination process being triggered at least in part based on one or more of the following: A message from the control node indicating that the distance between the air node and its neighboring air nodes meets a threshold. The signal received from the adjacent air node, which has a reference signal that meets the threshold, is used for power measurement. The radar detects that the distance between the air node and its neighboring air nodes meets a threshold, or The air nodes and adjacent air nodes are covered by a common satellite beam.

19. The method of claim 15, wherein determining the one or more beams to be silenced comprises: Receive coordination information from neighboring air nodes that indicates one or more parameters related to the motion state of the neighboring air nodes; At least in part based on the coordination information, a subset of beams oriented toward ground coverage areas that intersect with one or more beams of the adjacent air node is determined from the beam set; as well as The one or more beams to be silenced in the subset of beams are determined, at least in part, based on one or more priority rules.

20. The method of claim 19, wherein the one or more priority rules indicate that, among the first and second beams oriented toward the intersecting ground coverage area, the beam of the air node having lower altitude, shorter line-of-sight path or lower path loss to the land UE, lower speed or lower turbulence state has higher priority.

21. The method of claim 15, wherein determining the one or more beams to be silenced comprises: Send coordination information to the control node indicating one or more parameters related to the motion state of the air node; as well as The control node receives information indicating, at least in part, which of the one or more beams should be silenced based on the coordination information.

22. The method of claim 15, wherein determining the one or more beams to be silenced comprises: One or more ground areas are identified that are mapped to the air node, wherein the one or more beams to be silenced are directed toward one or more ground areas outside the one or more ground areas mapped to the air node.

23. The method of claim 22, wherein determining the one or more beams to be silenced comprises: Coordination information is received from neighboring air nodes, indicating one or more parameters related to the motion state of the neighboring air nodes, wherein the one or more ground areas mapped to the air nodes are determined at least in part based on the coordination information.

24. The method of claim 22, wherein determining the one or more beams to be silenced comprises: Send coordination information to the control node indicating one or more parameters related to the motion state of the air node; as well as The control node receives information indicating that it is mapped to one or more ground zones of the air node, at least in part, based on the coordination information.

25. The method of claim 15, wherein determining the one or more beams to be silenced comprises: Receive coordination information from neighboring air nodes that indicates one or more parameters related to the motion state of the neighboring air nodes; as well as The neighboring air nodes are determined to perform transmissions toward the terrestrial UE specifically for the Emergency Message Relay Service based at least in part on the coordination information and one or more priority rules, wherein the one or more beams to be silenced include each beam in the beam set based at least in part on the determination that the neighboring air nodes are to perform transmissions toward the terrestrial UE specifically for the Emergency Message Relay Service.

26. The method of claim 25, wherein the one or more priority rules indicate that, among the first and second air nodes supporting the emergency message relay service, air nodes with lower altitude, shorter distance to the land UE, lower path loss to the land UE, or lower speed have higher priority.

27. The method of claim 25, wherein the one or more priority rules indicate that, among the first and second air nodes supporting the emergency message relay service, the air node that enters the ground coverage area of ​​the land UE earlier or the air node that has a longer remaining time in the ground coverage area of ​​the land UE has a higher priority.

28. The method of claim 15, wherein the one or more beams to be silenced are included in the beam set at least in part based on a message from the control node instructing neighboring air nodes to specifically perform transmission behavior toward the land UE for the emergency message relay service.

29. A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising: One or more instructions, which, when executed by one or more processors of the air node, cause the air node to: One or more beams in the beam set are identified to be silenced to mitigate potential interference associated with transmissions from multiple air nodes to terrestrial user equipment (UE). as well as While sending at least one of the discovery signals or feedback related to the emergency message relay service to the land UE, the one or more beams are silenced.

30. An apparatus for wireless communication, comprising: A component for identifying one or more beams in a beam set to be silenced to mitigate potential interference associated with transmissions from multiple air nodes to land user equipment (UE). and A component for silencing one or more beams while sending at least one of a discovery signal or feedback related to emergency message relay service to the land UE.

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