Anti-interference of altimeter

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a network node may detect signals within a frequency band associated with an altimeter. The network node may perform measurements associated with the signal. The network node may identify whether the measurement satisfies a threshold. The network node may selectively transmit based at least in part on identifying whether the measurement satisfies the threshold. Numerous other aspects are described.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims the priority of Indian Patent Application No. 202241037312 filed on June 29, 2022, entitled “PREVENTINGALTIMETER INTERFERENCE” and assigned to the assignee of this application. The disclosure of the prior application is considered to be a part of this patent application and is incorporated into this patent application by reference. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications, and to techniques and apparatus for preventing altimeter jamming. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support 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 a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0005] A wireless network may include one or more network nodes that support communications for wireless communication devices, such as user equipment (UE) or multiple UEs. A UE may communicate with a network node via downlink communications and uplink communications. A "downlink" (or "DL") refers to a communication link from a network node to a UE, and an "uplink" (or "UL") refers to a communication link from a UE to a network node. Some wireless networks may support device-to-device communications, such as via a local link (e.g., a side link (SL), a wireless local area network (WLAN) link, and / or a wireless personal area network (WPAN) link, etc.).

[0006] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate at a city, country, region and / or global level. New Radio (NR) (which may be referred to as 5G) is a set of enhancements to the LTE mobile standard promulgated by 3GPP. NR is designed to better support mobile broadband Internet access by using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with a cyclic prefix (CP) on the downlink, using CP-OFDM and / or single carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink, and supporting beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation to improve spectrum efficiency, reduce costs, improve services, utilize new spectrum, and better integrate with other open standards. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR and other radio access technologies remain useful. Summary of the invention

[0007] Some aspects described herein relate to a method of wireless communication performed by a network node. The method may include detecting a signal within a frequency band associated with an altimeter. The method may include performing a measurement associated with the signal. The method may include identifying whether the measurement satisfies a threshold. The method may include selectively transmitting based at least in part on identifying whether the measurement satisfies the threshold.

[0008] Some aspects described herein relate to an apparatus for wireless communication performed by a network node. The apparatus may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to detect a signal within a frequency band associated with an altimeter. The one or more processors may be configured to perform measurements associated with the signal. The one or more processors may be configured to identify whether the measurement meets a threshold. The one or more processors may be configured to selectively send based at least in part on identifying whether the measurement meets the threshold.

[0009] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a network node. The instruction set, when executed by one or more processors of the network node, may cause the network node to detect a signal within a frequency band associated with an altimeter. The instruction set, when executed by one or more processors of the network node, may cause the network node to perform measurements associated with the signal. The instruction set, when executed by one or more processors of the network node, may cause the network node to identify whether the measurement meets a threshold. The instruction set, when executed by one or more processors of the network node, may cause the network node to selectively transmit based at least in part on identifying whether the measurement meets the threshold.

[0010] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for detecting a signal within a frequency band associated with an altimeter. The apparatus may include means for performing a measurement associated with the signal. The apparatus may include means for identifying whether the measurement satisfies a threshold. The apparatus may include means for selectively transmitting based at least in part on identifying whether the measurement satisfies the threshold.

[0011] Aspects collectively include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, network entities, network nodes, wireless communication devices and / or processing systems as fully described herein with reference to and as illustrated in the accompanying drawings.

[0012] The features and technical advantages of examples according to the present disclosure have been outlined quite extensively above so that the following specific embodiments may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be easily used as a basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, and the associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description and not as a definition of limitations to the claims.

[0013] Although various aspects are described in the present disclosure by illustrating some examples, it will be understood by those skilled in the art that such aspects can be implemented in many different arrangements and scenarios. The technology described herein can be implemented using different platform types, devices, systems, shapes, sizes and / or packaging arrangements. For example, some aspects can be implemented via integrated chip implementations or other devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / shopping equipment, medical equipment and / or artificial intelligence devices). Various 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. The device in combination with 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 (e.g., hardware components, including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders and / or summers) for analog and digital purposes. The various aspects described herein are intended to be practiced in various devices, components, systems, distributed arrangements and / or end-user devices of different sizes, shapes and compositions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to fully understand the above-mentioned features of the present disclosure, a more specific description of the invention briefly summarized 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 accompanying drawings only illustrate certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope thereof, as the specification may admit of other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

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

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

[0017] Figure 3 is a diagram illustrating an example decomposed base station architecture according to the present disclosure.

[0018] Figure 4 is a diagram illustrating an example of altimeter interference according to the present disclosure.

[0019] Figure 5 is a diagram illustrating an example of preventing altimeter interference according to the present disclosure.

[0020] Figure 6 is a diagram illustrating an example of a power backoff component according to the present disclosure.

[0021] Figure 7 is a diagram illustrating an example of an operation mode for preventing altimeter interference according to the present disclosure.

[0022] Figure 8 is a diagram illustrating an example process, for example, performed by a network node, according to the present disclosure.

[0023] Fig. 9 is a diagram of an example apparatus for wireless communications according to the present disclosure. DETAILED DESCRIPTION

[0024] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms, and should not be interpreted as being limited to any specific structure or function presented throughout the present disclosure. On the contrary, these aspects are provided so that the present disclosure will be thorough and complete, and the scope of the present disclosure will be fully conveyed to those skilled in the art. It should be understood by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the disclosure disclosed herein, whether it is implemented independently or in combination with any other aspect of the disclosure. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such a device or method implemented using other structures, functionality, or structure and functionality in addition to or different from the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims.

[0025] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "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 overall system.

[0026] Although various aspects may be described herein using terms generally associated with 5G or new radio (NR) radio access technologies (RATs), various aspects of the present disclosure may be applicable to other RATs, such as 3G RATs, 4G RATs, and / or post-5G RATs (e.g., 6G).

[0027] Figure 11 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., Long Term Evolution (LTE)) network, or may include elements of a 5G (e.g., NR) network and / or elements of a 4G (e.g., Long Term Evolution (LTE)) network, etc. The wireless network 100 may include one or more network nodes 110 (shown as network node 110a, network node 110b, network node 110c, and network node 110d), user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other entities. The network node 110 is a network node that communicates with the UE 120. As shown in the figure, the network node 110 may include one or more network nodes. For example, the network node 110 may be a converged network node, which means that the converged network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single radio access network (RAN) node (e.g., within a single device or unit). As another example, the network node 110 may be a decomposed network node (sometimes referred to as a decomposed base station), which means that the network node 110 is configured to utilize a protocol stack that is physically or logically distributed between two or more nodes (such as one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs)).

[0028] In some examples, the network node 110 is or includes a network node that communicates with the UE 120 via a radio access link, such as an RU. In some examples, the network node 110 is or includes a network node that communicates with other network nodes 110 via a fronthaul link or a midhaul link, such as a DU. In some examples, the network node 110 is or includes a network node that communicates with other network nodes 110 via a midhaul link or communicates with the core network via a backhaul link, such as a CU. In some examples, the network node 110 (such as an aggregated network node 110 or a decomposed network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. For example, the network node 110 may include 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, a transmit receive point (TRP), a DU, a RU, a CU, a mobility element of a network, a core network node, a network element, a network equipment, a RAN node, or a combination thereof. In some examples, network nodes 110 may be interconnected to each other or to one or more other network nodes 110 in wireless network 100 via various types of fronthaul, midhaul, and / or backhaul interfaces (such as direct physical connections, air interfaces, or virtual networks) using any suitable transport network.

[0029] In some examples, the network node 110 may provide communication coverage for a particular geographic area. In the Third Generation Partnership Project (3GPP), the term "cell" may refer to the coverage area of ​​the network node 110 and / or the network node subsystem serving the coverage area, depending on the context in which the term is used. The network node 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by a UE 120 with a service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by a UE 120 with a service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by a UE 120 associated with the femto cell (e.g., a UE 120 in a closed subscriber group (CSG)). A network node 110 for a macro cell may be referred to as a macro network node. A network node 110 for a pico cell may be referred to as a pico network node. The network node 110 for a femto cell may be referred to as a femto network node or a home network node. Figure 1 In the example shown, network node 110a may be a macro network node for macro cell 102a, network node 110b may be a pico network node for pico cell 102b, and network node 110c may be a femto network node for femto cell 102c. The network node may support one or more (e.g., three) cells. In some examples, the cells may not necessarily be stationary, and the geographic area of ​​the cells may move depending on the location of the mobile network node 110 (e.g., a mobile network node).

[0030] In some aspects, the term "base station" or "network node" may refer to a converged base station, a decomposed base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof. For example, in some aspects, a "base station" or "network node" may refer to a CU, a DU, a 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 term "base station" or "network node" may refer to a device configured to perform one or more functions (such as those described herein in conjunction with the network node 110). In some aspects, the term "base station" or "network node" may refer to multiple devices configured to perform one or more functions. For example, in some distributed systems, each of a number of different devices (which may be located in the same geographic location or in different geographic locations) may be configured to perform at least a portion of a function, or to repeat the execution of at least a portion of the function, and the term "base station" or "network node" may refer to any one or more of these different devices. In some aspects, the term "base station" or "network node" may refer to one or more virtual base stations 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 term "base station" or "network node" may refer to one of the base station functions but not another base station function. In this way, a single device may include more than one base station.

[0031] The wireless network 100 may include one or more relay stations. A relay station is a network node that can receive transmissions of data from an upstream node (e.g., a network node 110 or a UE 120) and transmit transmissions of data to a downstream node (e.g., a UE 120 or a network node 110). A relay station may be a UE 120 that can relay transmissions for other UEs 120. Figure 1 In the example shown, a network node 110d (e.g., a relay network node) may communicate with a network node 110a (e.g., a macro network node) and a UE 120d to facilitate communications between the network node 110a and the UE 120d. A network node 110 that relays communications may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, etc.

[0032] The wireless network 100 may be a heterogeneous network that includes different types of network nodes 110, such as macro network nodes, pico network nodes, femto network nodes, relay network nodes, etc. These different types of network nodes 110 may have different transmit power levels, different coverage areas, and / or different impacts on interference in the wireless network 100. For example, a macro network node may have a high transmit power level (e.g., 5 watts to 40 watts), while a pico network node, a femto network node, and a relay network node may have a lower transmit power level (e.g., 0.1 watt to 2 watts).

[0033] The network controller 130 may be coupled to or in communication with a set of network nodes 110 and may provide coordination and control for the network nodes 110. The network controller 130 may communicate with the network nodes 110 via a backhaul communication link or a midhaul communication link. The network nodes 110 may also communicate directly with each other or indirectly via a wireless backhaul link or a wired backhaul link. In some aspects, the network controller 130 may be or may include a CU or a core network device.

[0034] UE 120 can be spread throughout the wireless network 100, and each UE 120 can be stationary or mobile. UE 120 can include, for example, access terminals, terminals, mobile stations and / or subscriber units. UE 120 can be a cellular phone (e.g., a smart phone), 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 smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or a 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, an industrial manufacturing equipment, a global positioning system device, a UE function of a network node and / or any other suitable device configured to communicate via a wireless or wired medium.

[0035] Some UEs 120 may be considered as 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 may communicate with a network node, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered as Internet of Things (IoT) devices and / or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered as customer premises equipment. UE 120 may be included inside a housing that houses components of UE 120, such as a processor component and / or a memory component. In some examples, the processor component and the memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) may be operably coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0036] In general, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a specific RAT and may operate on one or more frequencies. RAT may be referred to as a radio technology, air interface, etc. Frequency may be referred to as a carrier, frequency channel, etc. In a given geographic area, each frequency may support a single RAT to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0037] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using network node 110 as an intermediary to communicate with each other) using one or more side link channels. For example, UE 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, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by network node 110.

[0038] The devices of the wireless network 100 may communicate using an electromagnetic spectrum that may be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, the devices of the wireless network 100 may communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). It should be understood that, although a portion of FR1 is greater than 6 GHz, FR1 is often (interchangeably) referred to as the "below 6 GHz" band in various documents and articles. A similar naming problem sometimes occurs with respect to FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, although different from the extremely high frequency (EHF) band (30 GHz-300 GHz) identified as the "millimeter wave" band by the International Telecommunication Union (ITU).

[0039] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands for these mid-band frequencies as frequency range designation FR3 (7.125GHz-24.25GHz). The bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and therefore the features of FR1 and / or FR2 can be effectively extended to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations to more than 52.6GHz. For example, three higher operating bands have been identified as frequency range designation FR4a or FR4-1 (52.6GHz-71GHz), FR4 (52.6GHz-114.25GHz) and FR5 (114.25GHz-300GHz). Each of these higher frequency bands falls within the EHF band.

[0040] In view of the above examples, unless otherwise specifically stated, it should be understood that if the term "below 6 GHz" or the like is used herein, the term may broadly refer to frequencies that may be lower than 6 GHz, may be within FR1, or may include mid-band frequencies. In addition, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" or the like is used herein, the term may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a or FR4-1, and / or FR5, or may be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) may be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0041] In some aspects, the network node 110 may include a communication manager 150. As described in greater detail elsewhere herein, the communication manager 150 may detect a signal within a frequency band associated with an altimeter; perform a measurement associated with the signal; identify whether the measurement satisfies a threshold; and selectively transmit based at least in part on identifying whether the measurement satisfies the threshold. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

[0042] As indicated above, Figure 1 are provided as examples. Other examples can be found in the Figure 1 Described differently.

[0043] Figure 2 2 is a diagram illustrating an example 200 of a network node 110 communicating with a UE 120 in a wireless network 100 according to the present disclosure. The network node 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T≥1). The UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R≥1). The network node 110 of example 200 includes one or more radio frequency components, such as an antenna 234 and a modem 254. In some examples, the network node 110 may include an interface, a communication component, or another component that facilitates communication with the UE 120 or another network node. Some network nodes 110 may not include a radio frequency component that facilitates direct communication with the UE 120, such as one or more CUs or one or more DUs.

[0044] At the network node 110, a transmit processor 220 may receive data intended for a UE 120 (or a set of UEs 120) from a data source 212. The transmit processor 220 may select one or more modulation and coding schemes (MCS) for the UE 120 based at least in part on one or more channel quality indicators (CQIs) received from the UE 120. The network node 110 may process (e.g., encode and modulate) the data for the UE 120 based at least in part on the MCS selected for the UE 120, and provide data symbols for the UE 120. The transmit processor 220 may process system information (e.g., for semi-static resource allocation information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling), and provide overhead symbols and control symbols. The transmit processor 220 may generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., pre-coding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modulators) (shown as modems 232a to 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of the modem 232. Each modem 232 may process a corresponding output symbol stream (e.g., for OFDM) using a corresponding modulator component to obtain an output sample stream. Each modem 232 may also process (e.g., convert to analog, amplify, filter, and / or upconvert) the output sample stream using a corresponding modulator component to obtain a downlink signal. The modems 232a through 232t may transmit a set of downlink signals (eg, T downlink signals) via a corresponding set of antennas 234 (eg, T antennas) (shown as antennas 234a through 234t).

[0045] At the UE 120, a set of antennas 252 (shown as antennas 252a to 252r) may receive downlink signals from the network node 110 and / or other network nodes 110 and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a to 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain input samples. Each modem 254 may use a demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from the modem 254, may perform MIMO detection on the received symbols where applicable, and may provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data destined for the UE 120 to the data sink 260, and may provide decoded control information and system information to the controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a CQI parameter, among other things. In some examples, one or more components of the UE 120 may be included in the housing 284.

[0046] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the network node 110 via the communication unit 294.

[0047] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include, 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 (in a single housing or multiple housings), sets of coplanar antenna elements, sets of non-coplanar antenna elements, and / or may be coupled to one or more transmit and / or receive components (such as, Figure 2 One or more antenna elements of one or more components in.

[0048] On the uplink, at the UE 120, the transmit processor 264 may receive and process data from the data source 262 and control information from the controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI). The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be pre-decoded by the TX MIMO processor 266, where applicable, further processed by the modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and sent to the network node 110. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, and / or a TX MIMO processor 266. The transceiver may be used by a processor (eg, controller / processor 280) and memory 282 to perform the functions described herein (eg, with reference to Figures 5 to 9 ) or any aspect of any of the methods described herein.

[0049] At the network node 110, uplink signals from the UE 120 and / or other UEs may be received by the antenna 234, processed by the modem 232 (e.g., a demodulator component of the modem 232 shown as DEMOD), detected by the MIMO detector 236 (where applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The network node 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communications. In some examples, the modem 232 of the network node 110 may include a modulator and a demodulator. In some examples, the network node 110 includes a 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 perform operations described herein (e.g., with reference to Figures 5 to 9 ) or any aspect of any of the methods described herein.

[0050] The controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other components of the controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the Figure 8 800 and / or operations of other processes as described herein. Memory 242 and memory 282 may store data and program codes for network node 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 network node 110 and / or UE 120 (e.g., directly, or after compilation, conversion, and / or interpretation), may cause the one or more processors, UE 120, and / or network node 110 to perform or direct, for example, Figure 8 The process 800 and / or operations of other processes as described herein. In some examples, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0051] In some aspects, the network node 110 includes: a component for detecting a signal within a frequency band associated with the altimeter; a component for performing a measurement associated with the signal; a component for identifying whether the measurement satisfies a threshold; and / or a component for selectively transmitting based at least in part on identifying whether the measurement satisfies the threshold. In some aspects, the components for the network node to perform operations described herein may include, for example, one or more of the communication manager 150, the transmit processor 220, the TX MIMO processor 230, the modem 232, the antenna 234, the MIMO detector 236, the receive processor 238, the controller / processor 240, the memory 242, or the scheduler 246.

[0052] Although Figure 2 The blocks in the 2000 and 2010 are illustrated as distinct components, but the functionality described above for these blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described with respect to the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0053] In some aspects, a single processor may perform all of the functions described as being performed by the one or more processors. In some aspects, the one or more processors may perform a set of functions together. For example, a first set of (one or more) of the one or more processors may perform a first function described as being performed by the one or more processors, and a second set of (one or more) of the one or more processors may perform a second function described as being performed by the one or more processors. The first set of processors and the second set of processors may be the same set of processors or may be different sets of processors. References to "one or more processors" should be understood to refer to the combination Figure 2 References to "one or more memories" should be understood to refer to any one or more memories of the corresponding device, such as in conjunction with Figure 2 For example, functions described as being performed by one or more memories may be performed by the same subset of the one or more memories or by different subsets of the one or more memories.

[0054] As indicated above, Figure 2 are provided as examples. Other examples can be found in the Figure 2 Described differently.

[0055] The deployment of a communication system (such as a 5G NR system) can be arranged in a variety of ways with various components or constituent parts. In a 5G NR system or network, a network node, a network entity, a mobility element of a network, a RAN node, a core network node, a network element, a base station or network equipment can be implemented in an aggregated or decomposed architecture. For example, a base station (such as a node B (NB), an evolved NB (eNB), an NR BS, a 5G NB, an access point (AP), a TRP or a cell, etc.) or one or more units (or one or more components) performing base station functionality can be implemented as an aggregated base station (also referred to as an independent base station or a monolithic base station) or a decomposed base station. "Network entity" or "network node" may refer to a decomposed base station or one or more units of a decomposed base station (such as one or more CUs, one or more DUs, one or more RUs, or a combination thereof).

[0056] An aggregated base station (e.g., an aggregated network node) may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). A decomposed base station (e.g., a decomposed network node) may be configured to utilize a protocol stack that is physically or logically distributed between two or more units (such as one or more CUs, one or more DUs, or one or more RUs). In some examples, a CU may be implemented within a network node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed across one or more other network nodes. A DU may be implemented to communicate with one or more RUs. Each of a CU, a DU, and a RU may also be implemented as a virtual unit, such as a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU).

[0057] Base station type operations or network designs may take into account the aggregated nature of base station functionality. For example, a decomposed base station may be utilized in an IAB network, an open radio access network (O-RAN (such as a network configuration initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)) to facilitate the scaling of a communication system by separating base station functionality into one or more units that can be deployed separately. A decomposed base station may include functionality implemented across two or more units at various physical locations, as well as functionality implemented virtually for at least one unit, which may enable flexibility in network design. Individual units of a decomposed base station may be configured for wired or wireless communication with at least one other unit of the decomposed base station.

[0058] Figure 3 3 is a diagram illustrating an example disaggregated base station architecture 300 according to the present disclosure. The disaggregated base station architecture 300 may include a CU 310 that may communicate directly with a core network 320 via a backhaul link, or indirectly with the core network 320 through one or more disaggregated control units, such as a near-RT RIC 325 via an E2 link, or a non-RT RIC 315 associated with a service management and orchestration (SMO) framework 305, or both. The CU 310 may communicate with one or more DUs 330 via respective midhaul links, such as via an F1 interface. Each of the DUs 330 may communicate with one or more RUs 340 via respective fronthaul links. Each of the RUs 340 may communicate with one or more UEs 120 via respective radio frequency (RF) access links. In some implementations, a UE 120 may be served simultaneously by multiple RUs 340.

[0059] Each of the units (including CU 310, DU 330, RU 340) and the near-RT RIC 325, non-RT RIC 315, and SMO framework 305 may include or be coupled to one or more interfaces configured to receive or send signals, data, or information (collectively referred to as signals) via a wired or wireless transmission medium. Each of these units or an associated processor or controller that provides instructions to one or more communication interfaces of the corresponding unit may be configured to communicate with one or more of the other units via a transmission medium. In some examples, each of these units may include a wired interface and a wireless interface, the wired interface being configured to receive signals via a wired transmission medium or to send signals to one or more of the other units, the wireless interface being configured to receive signals via a wireless transmission medium or to send signals to one or more of the other units, or both.

[0060] In some aspects, CU 310 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC) functions, packet data convergence protocol (PDCP) functions, or service data adaptation protocol (SDAP) functions, etc. Each control function may be implemented using an interface that is configured to communicate signals with other control functions hosted by CU 310. CU 310 may be configured to handle user plane functionality (e.g., central unit-user plane (CU-UP) functionality), control plane functionality (e.g., central unit-control plane (CU-CP) functionality), or a combination thereof. In some specific implementations, CU310 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface (such as an E1 interface). As needed, CU 310 may be implemented to communicate with DU 330 for network control and signaling.

[0061] Each DU 330 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 340. In some aspects, the DU 330 may host one or more of a radio link control (RLC) layer, a MAC layer, and one or more high physical (PHY) layers, at least in part, according to a functional partitioning (such as that defined by 3GPP). In some aspects, the one or more high PHY layers may be implemented by one or more modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc. In some aspects, the DU 330 may also host one or more low PHY layers, such as one or more modules for fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming or physical random access channel (PRACH) extraction and filtering. Each layer (also referred to as a module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by the DU 330 or with control functions hosted by the CU 310.

[0062] Each RU 340 may implement lower layer functionality. In some deployments, the RU 340 controlled by the DU 330 may correspond to a logical node that hosts RF processing functions or low PHY layer functions based on functional split (e.g., functional split defined by 3GPP) (such as lower layer functional split), such as performing FFT, performing iFFT, digital beamforming, or PRACH extraction and filtering. In this architecture, each RU 340 may be operated to handle over-the-air (OTA) communications with one or more UEs 120. In some specific implementations, real-time and non-real-time aspects of control plane and user plane communications with the RU 340 may be controlled by the corresponding DU 330. In some scenarios, this configuration may enable each DU 330 and CU 310 to be implemented in a cloud-based RAN architecture (such as a vRAN architecture).

[0063] The SMO framework 305 may be configured to support RAN deployment and provisioning of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 305 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 305 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) platform 390) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 310, DU 330, RU 340, non-RT RIC 315, and near-RT RIC 325. In some specific implementations, the SMO framework 305 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 311) via the O1 interface. Additionally, in some implementations, the SMO framework 305 can communicate directly with each of the one or more RUs 340 via a corresponding O1 interface. The SMO framework 305 can also include a non-RT RIC 315 configured to support the functionality of the SMO framework 305.

[0064] The non-RT RIC 315 may be configured to include logic functions that implement non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 325. The non-RT RIC 315 may be coupled to or communicate with the near-RT RIC 325 (such as via an A1 interface). The near-RT RIC 325 may be configured to include logic functions that implement near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 310, one or more DUs 330, or both, and the O-eNB with the near-RT RIC 325.

[0065] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 325, the non-RT RIC 315 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 325 and may be received from a non-network data source or from a network function at the SMO framework 305 or the non-RT RIC 315. In some examples, the non-RT RIC 315 or the near-RT RIC 325 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 315 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 305 (such as via reconfiguration of the O1 interface) or via the creation of RAN management policies (such as A1 interface policies).

[0066] As indicated above, Figure 3 are provided as examples. Other examples can be found in the Figure 3 Described differently.

[0067] Figure 4 4 is a diagram illustrating an example 400 of altimeter interference according to the present disclosure. A network node 110 may communicate with a UE 120 and an aircraft 405. The UE 405 may include some or all of the features of the UE 120. In some cases, the aircraft 405 may be any device that includes an altimeter or is capable of including an altimeter. In some cases, the aircraft 405 may be an airplane, a helicopter, or a drone, etc. In some cases, the aircraft 405 may include an altimeter 410. The altimeter 410 may be used by the aircraft 405 to measure the height of the aircraft 405 relative to a fixed level, such as the height of the aircraft 405 relative to an airport runway or other terrain. In some cases, the network node 110 may be located within a specific distance of the aircraft 405, such as within a specific distance of an airport runway used by the aircraft 405 for landing purposes. In some cases, the network node 110 communicating with the aircraft 405 may include the network node 110 detecting one or more signals on the RA frequency band associated with the altimeter 420.

[0068] As shown in example 400, network node 110 may operate within a communication band 415. For example, network node 110 may communicate with UE 120 using communication band 415. Communication band 415 may be a 5G communication band and / or may include a first set of frequencies, such as frequencies between 3700 MHz and 3980 MHz. In contrast, altimeter 410 may operate within an altimeter band 420 including a second set of frequencies, such as frequencies between 4200 MHz and 4400 MHz. Note that the above frequencies are provided for example only. For example, communication band 415 may include any frequency that can be used by network node 110 for communication and / or any frequency that may interfere with altimeter band 420. In some cases, such as when network node 110 is within a certain distance of an airport runway, altimeter 410 may receive energy sent in communication band 415. This may cause interference to altimeter 410. For example, although buffer zones have been created around some airports, certain situations such as emergency landings and drones for medical assistance may require highly sensitive use of altimeter 410. Interference with altimeter 410 may have negative consequences, such as increasing operational (e.g., landing) difficulties, causing physical damage to aircraft 405, and / or causing injury or loss of life to passengers of aircraft 405.

[0069] Techniques and apparatus for preventing altimeter interference are described herein. In some aspects, a network node may detect a signal within a frequency band associated with an altimeter. The network node may perform a measurement associated with the signal, such as determining an energy level associated with the signal. The network node may identify whether the measurement satisfies a threshold, such as an energy threshold. The network node selectively sends a communication based at least in part on identifying whether the measurement satisfies the threshold. For example, the network node may send a communication based at least in part on identifying that the measurement does not satisfy the threshold. Alternatively, based at least in part on identifying that the measurement satisfies the threshold, the network node may refrain from sending the communication, or may send the communication in a selected portion of the communication frequency band.

[0070] As described above, a network node may operate within a communication band that includes a first set of frequencies, and an altimeter may operate within an altimeter band that includes a second set of frequencies. In some cases, such as when the network node is within a specific distance of an airport runway, the altimeter may receive energy sent in the communication band. This may cause interference to the altimeter. Using the techniques and devices described herein, a network node may selectively send communications based at least in part on whether a signal measurement associated with the altimeter satisfies a threshold. For example, a network node may determine that an altimeter (or an aircraft including an altimeter) is within a specific distance of the network node based at least in part on whether the signal measurement satisfies a threshold. Therefore, the network node may refrain from sending communications that may interfere with the operation of the altimeter, or may send communications in a portion of the communication band that is less likely to interfere with the altimeter. This may reduce interference with the altimeter, thereby reducing the possibility of physical damage to the aircraft and / or injury or death to passengers of the aircraft.

[0071] As indicated above, Figure 4 are provided as examples. Other examples can be found in the Figure 4 Described differently.

[0072] Figure 5 is a diagram illustrating an example 500 of preventing altimeter interference according to the present disclosure. The network node 110 may communicate with one or more UEs, such as the UE 120 and / or the aircraft 405 .

[0073] As shown in conjunction with reference numeral 505, the network node 110 may detect signals within a frequency band associated with the altimeter. As described herein, the network node 110 may operate within a frequency band (such as the communication frequency band 415) that includes a first set of frequencies (such as frequencies between 3700 MHz and 3980 MHz). Conversely, the altimeter 410 may operate within another frequency band (such as the altimeter frequency band 420) that includes a second set of frequencies (such as frequencies between 4200 MHz and 4400 MHz). In some aspects, the network node 110 may be configured to monitor the altimeter frequency band for detecting one or more signals within the altimeter frequency band. In this case, the network node 110 may detect the signal within the altimeter frequency band based at least in part on monitoring the second set of frequencies and detecting the signal within the second set of frequencies.

[0074] As shown in conjunction with reference numeral 510, the network node 110 may perform a measurement associated with the signal. In some aspects, the measurement may be an energy measurement. For example, the network node 110 may measure an energy level associated with the signal. In some aspects, the network node 110 may be configured to perform frequency modulation (FM) detection and / or pulse detection. For example, the network node 110 may detect the signal based at least in part on performing FM detection. Additionally or alternatively, the network node 110 may detect the signal based at least in part on performing pulse detection. In some aspects, the network node 110 may perform energy measurements and may perform at least one of FM detection and pulse detection. In conjunction with Figure 6 Additional details regarding these features are described.

[0075] As shown in conjunction with reference numeral 515, the network node 110 may identify whether the measurement satisfies a threshold. In some aspects, the threshold may be an energy threshold. For example, the network node 110 may perform an energy measurement associated with the signal and may compare the energy measurement to the energy threshold. In some aspects, the measurement may satisfy the threshold based at least in part on the measurement being greater than or greater than or equal to the threshold. Alternatively, the measurement may not satisfy the threshold based at least in part on the measurement being less than or less than or equal to the threshold.

[0076] As shown in conjunction with reference numeral 520, the network node 110 may selectively transmit based at least in part on identifying whether the measurement satisfies the threshold. In some aspects, the network node 110 may determine to transmit the communication and / or may transmit the communication based at least in part on identifying that the measurement does not satisfy the threshold. In some aspects, the measurement not satisfying the threshold may indicate that the aircraft 405 is not within a specific distance (e.g., a threshold distance) of the network node 110. For example, the network node 110 may determine that the aircraft 405 is not within a specific distance of the network node 110 based at least in part on an energy measurement associated with the signal not satisfying an energy threshold. In this case, the communication of the network node 110 is unlikely to interfere with the altimeter 410 associated with the aircraft 405. Therefore, the network node 110 may transmit the communication based at least in part on the communication having a reduced likelihood (or no likelihood) of interfering with the altimeter 410.

[0077] In some aspects, network node 110 may determine not to send a communication and / or may refrain from sending a communication based at least in part on identifying that the measurement satisfies the threshold. In some aspects, the measurement satisfying the threshold may indicate that aircraft 405 is within a specific distance (e.g., a threshold distance) of network node 110. For example, network node 110 may determine that aircraft 405 is within a specific distance of network node 110 based at least in part on an energy measurement associated with a signal satisfying an energy threshold. In this case, the communication of network node 110 may be more likely to interfere with altimeter 410 associated with aircraft 405. Therefore, network node 110 may refrain from sending (e.g., may not send) the communication based at least in part on the increased likelihood that the communication has an interference with altimeter 410. In some aspects, network node 110 may refrain from sending a communication for a period of time, such as until another measurement associated with the signal (or another measurement associated with another signal) does not satisfy the threshold. For example, network node 110 may perform another measurement, may compare the other measurement to the threshold, and may send a communication based at least in part on the other measurement not satisfying the threshold. In some aspects, another measurement failing to satisfy the threshold may indicate that aircraft 405 is no longer within a certain distance of network node 110 and that communications are unlikely to interfere with altimeter 410 .

[0078] In some aspects, the network node 110 may use a portion of the communication band to send communications. For example, the network node 110 may use only the portion of the communication band to send communications based at least in part on identifying that the measurement meets the threshold. In some aspects, the portion of the communication band may include a portion of frequencies associated with the communication band that are not close to frequencies associated with the altimeter band. For example, the communication band may include frequencies from 3700 MHz to 3980 MHz, while the portion of the communication band may only include frequencies from 3700 MHz to 3900 MHz. In this case, the network node 110 may not transmit within frequencies from 3901 MHz to 3980 MHz because these frequencies may be more likely to interfere with the altimeter band.

[0079] In some aspects, the portion of the communication band may be based at least in part on an energy measurement. For example, the network node 110 may adjust the portion of the communication band based at least in part on an energy measurement. In one example, the network node 110 may send communications within a first portion of the communication band (e.g., 3700 MHz to 3900 MHz) based at least in part on the measurement being a first energy measurement, or may send communications within a second portion (e.g., a smaller portion) of the band (e.g., 3700 MHz to 3800 MHz) based at least in part on the measurement being a second energy measurement greater than the first energy measurement. In some aspects, the network node 110 may gradually reduce the frequency range associated with the portion of the communication band based at least in part on the energy measurement being a higher energy measurement, and / or may gradually increase the frequency range associated with the portion of the communication band based at least in part on the energy measurement being a lower energy measurement.

[0080] In some aspects, network node 110 may send communications based at least in part on a combination of FM detection, pulse detection, and energy measurement. For example, network node 110 may determine that aircraft 405 is within a certain area (e.g., a threshold distance) of network node 110 based at least in part on using FM detection and / or pulse detection. If FM detection or pulse detection does not detect that aircraft 405 is within the area of ​​network node 110, network node 110 may send one or more communications. However, if FM detection or pulse detection detects that aircraft 405 is within the area of ​​network node 110, network node 110 may not send communications and / or may adjust the portion of the communication frequency band based at least in part on energy measurement, as described herein.

[0081] In some aspects, the network node 110 can operate in a standalone mode. For example, based at least in part on detecting a signal within the altimeter frequency band and comparing a measurement of the signal to a threshold value, the network node 110 can send a communication, can refrain from sending a communication, or can send a communication within a selected portion of the communication frequency band, as described herein. The network node 110 can perform these functions without receiving any input from other network nodes.

[0082] In some aspects, network node 110 may operate in a collaborative mode. In this case, network node 110 may receive input from one or more other network nodes. The input from one or more other network nodes may include another signal, another measurement associated with another signal, and / or may be an indication of whether to send a communication. In some aspects, network node 110 may determine a trajectory of aircraft 405 based at least in part on input from one or more other network nodes. For example, network node 110 may receive a first input from a first other network node and may receive a second input from a second other network node. Network node 110 may determine a trajectory of aircraft 405 based at least in part on the first input and the second input. In combination Figure 7 Additional details regarding these features are described.

[0083] In some aspects, the network node 110 may send the communication based at least in part on the trajectory indicating that the aircraft 405 is not within the area of ​​the network node 110 and / or that the aircraft 405 is moving in a direction away from the network node 110. Alternatively, based at least in part on the trajectory indicating that the aircraft 405 is within the area of ​​the network node 110 and / or that the aircraft 405 is moving in a direction toward the network node 110, the network node 110 may refrain from sending the communication, or may only send the communication within the portion of the communication frequency band. In some aspects, the network node 110 may selectively send the communication based at least in part on identifying whether the measurement meets the threshold and at least in part on input from the one or more other network nodes. For example, the network node 110 may send the communication based at least in part on the measurement not meeting the threshold and / or at least in part on the trajectory indicating that the aircraft 405 is not within the area of ​​the network node 110 or that the aircraft 405 is moving in a direction away from the network node 110. Alternatively, network node 110 may refrain from sending communications, or may send communications only within that portion of the communications band, based at least in part on the measurement satisfying a threshold and / or based at least in part on a trajectory indicating that aircraft 405 is within the area of ​​network node 110 or that aircraft 405 is moving in a direction toward network node 110.

[0084] In some aspects, the network node 110 may send an output to one or more other network nodes that may enable the one or more other network nodes to determine whether to send a communication. For example, the output may include an indication of a signal, an indication of a measurement associated with the signal, and / or an indication of whether to perform a transmission. In some aspects, the network node 110 (and / or other network nodes) may selectively transmit based at least in part on a beam direction. For example, the network node 110 may transmit based at least in part on the network node 110 having a beam pointing away from the aircraft 405, or may not transmit based at least in part on the network node 110 having a beam pointing to the aircraft 405. In some aspects, the precoding matrix may indicate the beam directions of multiple network nodes and / or whether each of the multiple network nodes should be able to transmit at a given time.

[0085] As described above, the network node 110 may operate within a communication band that includes a first set of frequencies, and the altimeter 410 may operate within an altimeter band that includes a second set of frequencies. In some cases, such as when the network node 110 is located within a certain distance of an airport runway, the altimeter 410 may receive energy sent in the communication band. This may cause interference to the altimeter 410. Using the techniques and devices described herein, the network node 110 may selectively send communications based at least in part on identifying whether a signal measurement associated with the altimeter 410 meets a threshold. For example, the network node 110 may determine that the altimeter (or an aircraft 405 including the altimeter) is within a certain distance of the network node 110 based at least in part on the signal measurement meeting the threshold. Therefore, the network node 110 may refrain from sending communications that may interfere with the operation of the altimeter 410, or may send communications in a portion of the communication band that is less likely to interfere with the altimeter 410. This may reduce interference with altimeter 410 , thereby reducing the likelihood of physical damage to aircraft 405 and / or injury or loss of life to passengers of aircraft 405 .

[0086] As indicated above, Figure 5 are provided as examples. Other examples can be found in the Figure 5 Described differently.

[0087] Figure 66 is a diagram illustrating an example of a power backoff component 600 according to the present disclosure. The power backoff component 600 may include, among others, an RF analog and digital component 605, an FM receiver 610, a pulse detector 615, an energy estimator 620, and / or a power distribution component 625. In some aspects, the power backoff component 600 may be included in a network node, such as a wireless network node 110. The RF analog and digital component 605 may be configured to monitor (e.g., sample) an aviation frequency band, such as an altimeter frequency band 420, for detecting one or more signals associated with an altimeter, such as an altimeter 410 associated with an aircraft 405. The FM receiver 610 may be configured to perform frequency demodulation, such as frequency modulated continuous wave (FMCW) demodulation. In some aspects, the FM receiver 610 may be configured to determine the altitude of the aircraft 405 with a small fixed error, but may not be as accurate as other components, such as the pulse detector 615, at higher altitudes. The pulse detector 615 may be configured to detect one or more pulses and may determine the altitude of the aircraft 405 using the following example formula: t0=(2*h) / c0, where t0 is the delay time, h is the altitude above the ground, and c0 is a constant such as the speed of light. In some aspects, the pulse detector 615 may calculate the altitude of the aircraft 405 with lower overall accuracy (e.g., compared to the FM receiver 610), but may be more accurate from a higher altitude. The energy estimator 620 may be configured to estimate (e.g., measure) the energy level of a signal (e.g., a signal received within the altimeter band 420). In some aspects, the power backoff component 600 may include one or more of the FM receiver 610, the pulse detector 615, and the energy estimator 620. In one example, the power backoff component 600 may include only the energy estimator 620. In another example, the power backoff component 600 may include the energy estimator 620 and one of the FM receiver 610 or the pulse detector 615. In another example, the power back-off component 600 may include all three of the FM receiver 610 , the pulse detector 615 , and the energy estimator 620 .

[0088] In some aspects, as shown by reference numeral 630, the power allocation component 625 can be configured to selectively transmit communications. For example, the power allocation component 625 can transmit communications based at least in part on the signal measurement not satisfying a threshold, as described herein. Alternatively, based at least in part on the signal measurement satisfying the threshold, the power allocation component 625 can refrain from transmitting communications, or can transmit communications only within a selected portion of a communications frequency band.

[0089] In some aspects, as shown by reference numeral 635, power allocation component 625 may receive input from one or more other network nodes. In some aspects, power allocation component 625 may determine the trajectory of aircraft 405 based at least in part on input from one or more other network nodes. Power allocation component 625 may selectively send communications based at least in part on the trajectory of aircraft 405 (and / or based at least in part on signal measurements satisfying a threshold). In some aspects, the input may include another signal, another measurement associated with another signal, and / or may be an indication of whether to send communications. In some aspects, as shown by reference numeral 640, power allocation component 625 may send outputs to one or more other network nodes. The output may include an indication of a signal, an indication of a measurement associated with a signal, and / or an indication of whether to perform transmission, etc.

[0090] As indicated above, Figure 6 are provided as examples. Other examples can be found in the Figure 6 Described differently.

[0091] Figure 7 are diagrams illustrating examples 700 and 705 of operating modes for preventing altimeter interference according to the present disclosure. One or more network nodes 110, such as network node 110-1, network node 110-2, and / or network node 110-3, may be configured to determine a distance of aircraft 405 from a respective network node.

[0092] As shown in example 700, one or more network nodes 110 may operate in a standalone mode. As described herein, one or more network nodes 110 may receive a signal within an altimeter frequency band, perform a measurement associated with the signal, compare the measurement to a threshold, and selectively send a communication (e.g., to a UE 120) based at least in part on the measurement satisfying the threshold. For example, the network node 110 may send a communication based at least in part on an identification that the measurement does not satisfy the threshold. Alternatively, based at least in part on an identification that the measurement satisfies the threshold, the network node 110 may refrain from sending the communication, or may send the communication in a selected portion of the communication frequency band. In some aspects, one or more of the network nodes 110 may determine a distance of the aircraft 405 from the respective network node 110 based at least in part on the signal. For example, the network node 110-1 may determine a distance of the aircraft 405 from the network node 110-1 based at least in part on an energy measurement associated with the signal.

[0093] As shown in example 705, one or more network nodes 110 may operate in a collaborative mode. In the collaborative mode, each of the network nodes 110 may be configured to determine the distance of the aircraft 405 from the corresponding network node 110. Additionally or alternatively, one or more of the network nodes 110 may be configured to determine the trajectory of the aircraft 405. For example, the network node 110-1 may receive input from other network nodes. The input from the other network nodes may include another signal, another measurement associated with another signal, and / or may be an indication of whether to send a communication. In some aspects, the network node 110-1 may determine the trajectory of the aircraft 405 based at least in part on the input from the other network nodes. For example, the network node 110 may receive a first input from a first other network node 110-2, and may receive a second input from a second other network node 110-3. The network node 110-1 may determine the trajectory of the aircraft 405 based at least in part on the first input and the second input. For example, network node 110 - 1 may determine a trajectory of aircraft 405 based at least in part on a combination of signals (or signal measurements) detected at network node 110 - 1 , the first input, and the second input.

[0094] As indicated above, Figure 7 are provided as examples. Other examples can be found in the Figure 7 Described differently.

[0095] Figure 8 is a diagram illustrating an example process 800 performed, for example, by a network node in accordance with the present disclosure. The example process 800 is an example of a network node (eg, the network node 110) performing operations associated with preventing altimeter interference.

[0096] like Figure 8 As shown, in some aspects, process 800 may include detecting a signal within a frequency band associated with an altimeter (block 810). For example, a network node (e.g., using Fig. 9 The communications manager 150 and / or detection component 908 depicted may detect (e.g., using antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) signals within a frequency band associated with the altimeter, as described above.

[0097] like Figure 8 As further shown, in some aspects, process 800 may include performing measurements associated with the signal (block 820). For example, a network node (e.g., using Fig. 9The depicted communications manager 150 and / or measurement component 910) can perform (eg, using controller / processor 240, controller / processor 280, etc.) measurements associated with the signals, as described above.

[0098] like Figure 8 As further shown, in some aspects, process 800 may include: identifying whether the measurement satisfies a threshold (block 830). For example, a network node (e.g., using Fig. 9 The communications manager 150 and / or identification component 912 (depicted) can identify (eg, using the controller / processor 240, the controller / processor 280, etc.) whether the measurement satisfies a threshold, as described above.

[0099] like Figure 8 As further shown, in some aspects, process 800 may include: selectively transmitting based at least in part on identifying whether the measurement satisfies the threshold (block 840). Fig. 9 The depicted communication manager 150 and / or transmit component 904) may selectively transmit (e.g., using the controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, etc.) based at least in part on whether the identification measurement satisfies a threshold, as described above.

[0100] Process 800 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.

[0101] In a first aspect, selectively transmitting based at least in part on identifying whether the measurement satisfies the threshold includes transmitting a communication based at least in part on identifying that the measurement does not satisfy the threshold.

[0102] In a second aspect, alone or in combination with the first aspect, selectively transmitting based at least in part on identifying whether the measurement satisfies the threshold comprises refraining from transmitting the communication based at least in part on identifying that the measurement satisfies the threshold.

[0103] In a third aspect, alone or in combination with one or more of the first and second aspects, refraining from transmitting the communication comprises delaying transmission of the communication until another measurement associated with another signal detected within the frequency band satisfies a threshold.

[0104] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the threshold is an energy threshold, and performing the measurement includes determining an energy level associated with the signal.

[0105] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, detecting the signal includes performing frequency modulation detection or pulse detection.

[0106] In a sixth aspect, either alone or in combination with one or more of aspects 1 to 5, process 800 comprises identifying (e.g., using controller / processor 240, controller / processor 280, etc.) a transmission band associated with a network node, wherein selectively transmitting comprises transmitting within a selected portion of the transmission band based at least in part on an identified measurement satisfying a threshold.

[0107] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, transmitting within a selected portion of a transmission frequency band comprises transmitting within a first portion of the transmission frequency band that is farther away from a frequency band associated with an altimeter, and suppressing transmission within a second portion of the transmission frequency band that is closer to a frequency band associated with the altimeter.

[0108] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the transmission frequency band is 3.7 gigahertz (GHz) to 3.98 GHz.

[0109] In a ninth aspect, either alone or in combination with one or more of the first to eighth aspects, a frequency band associated with the altimeter is 4.2 gigahertz (GHz) to 4.4 GHz.

[0110] In a tenth aspect, alone or in combination with one or more of aspects one to nine, process 800 includes receiving (e.g., using antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) an input based at least in part on the signal or another signal associated with the altimeter, and identifying a trajectory of an aircraft including the altimeter based at least in part on the input, and selectively sending includes selectively sending based at least in part on identifying whether the measurement satisfies the threshold and at least in part on identifying the trajectory of the aircraft.

[0111] In an eleventh aspect, either alone or in combination with one or more of the first to tenth aspects, selectively transmitting comprises transmitting the communication based at least in part on identifying that the measurement does not satisfy the threshold and based at least in part on identifying that the trajectory of the aircraft indicates that the communication will not interfere with the altimeter.

[0112] In a twelfth aspect, either alone or in combination with one or more of the first to eleventh aspects, selectively transmitting includes refraining from transmitting communications or transmitting communications in a selected portion of a transmit frequency band based at least in part on the measurement satisfying the threshold and at least in part on the trajectory of the aircraft indicating that the communication will interfere with the altimeter.

[0113] In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, receiving input from another network node includes: receiving a first input from a first another network node and receiving a second input from a second another network node, and identifying the trajectory of the aircraft includes: identifying the trajectory of the aircraft based at least in part on the first input and the second input.

[0114] In a fourteenth aspect, either alone or in combination with one or more of the first to thirteenth aspects, the input comprises another signal associated with the altimeter, another measurement based at least in part on another signal associated with the altimeter, or an indication of whether to send a communication.

[0115] In a fifteenth aspect, either alone or in combination with one or more of the first to fourteenth aspects, process 800 includes sending to another network node (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, etc.) an indication of the signal, an indication of a measurement associated with the signal, or an indication of whether to send a communication based at least in part on a measurement associated with the signal.

[0116] In a sixteenth aspect, either alone or in combination with one or more of aspects one to fifteen, process 800 includes determining (using controller / processor 240, controller / processor 280, etc.) that an aircraft associated with the altimeter is within a distance of a network node based at least in part on an identification measurement satisfying a threshold, or determining that an aircraft associated with the altimeter is not within the distance of the network node based at least in part on an identification measurement not satisfying a threshold.

[0117] although Figure 8 An example block diagram of process 800 is shown, but in some aspects, process 800 may include Figure 8 The depicted blocks may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner. Additionally or alternatively, two or more of the blocks of process 800 may be performed in parallel.

[0118] Fig. 9900 is a diagram of an example apparatus 900 for wireless communication according to the present disclosure. The apparatus 900 may be a network node, or the network node may include the apparatus 900. In some aspects, the apparatus 900 includes a receiving component 902 and a sending component 904, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, the apparatus 900 may communicate with another apparatus 906 (such as a UE, a base station, or another wireless communication device) using the receiving component 902 and the sending component 904. As further shown, the apparatus 900 may include a communication manager 150. The communication manager 150 may include one or more of a detection component 908, a measurement component 910, an identification component 912, or a determination component 914, etc.

[0119] In some aspects, the apparatus 900 may be configured to perform Figures 5 to 7 Additionally or alternatively, the apparatus 900 may be configured to perform one or more processes described herein, such as Figure 8 The process 800. In some aspects, Fig. 9 The device 900 and / or one or more components shown may include a combination of Figure 2 One or more components of the network node. Additionally or alternatively, Fig. 9 One or more of the components shown may be combined with Figure 2 Additionally or alternatively, one or more components in the component set may be at least partially implemented as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or codes stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of the component.

[0120] The receiving component 902 may receive communications from the device 906, such as reference signals, control information, data communications, or combinations thereof. The receiving component 902 may provide the received communications to one or more other components of the device 900. In some aspects, the receiving component 902 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding) on ​​the received communications and may provide the processed signals to one or more other components of the device 900. In some aspects, the receiving component 902 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receiving processors, controllers / processors, memories or combinations thereof of the network node.

[0121] Transmit component 904 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 906. In some aspects, one or more other components of device 900 may generate communications and may provide the generated communications to transmit component 904 for transmission to device 906. In some aspects, transmit component 904 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to device 906. In some aspects, transmit component 904 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the network node. In some aspects, the transmit component 904 can be co-located with the receive component 902 in a transceiver.

[0122] Detection component 908 can detect a signal within a frequency band associated with the altimeter. Measurement component 910 can perform measurements associated with the signal. Identification component 912 can identify whether the measurement satisfies the threshold. Transmission component 904 can selectively transmit based at least in part on identifying whether the measurement satisfies the threshold.

[0123] Identifying component 912 can identify a transmission band associated with the network node, wherein selectively transmitting includes transmitting within a selected portion of the transmission band based at least in part on identifying that the measurement satisfies the threshold.

[0124] Receiving component 902 can receive input from another network node based at least in part on the signal or another signal associated with the altimeter. Identifying component 912 can identify a trajectory of an aircraft including the altimeter based at least in part on the input, wherein selectively transmitting includes selectively transmitting based at least in part on identifying whether the measurement satisfies the threshold and based at least in part on identifying the trajectory of the aircraft. Transmitting component 904 can transmit to another network node an indication of the signal, an indication of the measurement associated with the signal, or an indication of whether to transmit a communication based at least in part on the measurement associated with the signal.

[0125] Determining component 914 can determine that an aircraft associated with the altimeter is within the distance of the network node based at least in part on identifying that the measurement satisfies the threshold. Determining component 914 can determine that an aircraft associated with the altimeter is not within the distance of the network node based at least in part on identifying that the measurement does not satisfy the threshold.

[0126] Fig. 9 The number and arrangement of components shown are provided as examples. In practice, there may be Fig. 9Additional components, fewer components, different components, or components arranged in a different manner than those shown. Fig. 9 Two or more components shown may be implemented in a single component, or Fig. 9 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Fig. 9 The illustrated set of component(s) may be described as being executable by Fig. 9 Another collection of components shown performs one or more functions.

[0127] The following provides an overview of some aspects of the disclosure:

[0128] Aspect 1: A method of wireless communication performed by a network node, the method comprising: detecting a signal within a frequency band associated with an altimeter; performing measurements associated with the signal; identifying whether the measurement meets a threshold; and selectively transmitting based at least in part on identifying whether the measurement meets the threshold.

[0129] Aspect 2: The method of aspect 1, wherein selectively transmitting based at least in part on identifying whether the measurement satisfies the threshold comprises transmitting a communication based at least in part on identifying that the measurement does not satisfy the threshold.

[0130] Aspect 3: The method of any one of aspects 1 to 2, wherein selectively transmitting based at least in part on identifying whether the measurement satisfies the threshold comprises refraining from transmitting a communication based at least in part on identifying that the measurement satisfies the threshold.

[0131] Aspect 4: The method of aspect 3, wherein refraining from sending the communication comprises delaying sending the communication until another measurement associated with another signal detected within the frequency band satisfies the threshold.

[0132] Aspect 5: The method according to any one of aspects 1 to 4, wherein the threshold is an energy threshold, and wherein performing the measurement comprises: determining an energy level associated with the signal.

[0133] Aspect 6: The method according to any one of aspects 1 to 5, wherein detecting the signal comprises: performing frequency modulation detection or pulse detection.

[0134] Aspect 7: According to any one of Aspects 1 to 6, the method also includes: identifying a transmission band associated with the network node, wherein selectively transmitting includes: transmitting within a selected portion of the transmission band based at least in part on identifying that the measurement meets the threshold.

[0135] Aspect 8: A method according to Aspect 7, wherein transmitting within the selected portion of the transmission frequency band includes: transmitting within a first portion of the transmission frequency band that is farther away from the frequency band associated with the altimeter, and suppressing transmission within a second portion of the transmission frequency band that is closer to the frequency band associated with the altimeter.

[0136] Aspect 9: The method according to aspect 7, wherein the transmission frequency band is 3.7 gigahertz (GHz) to 3.98 GHz.

[0137] Aspect 10: The method according to any one of aspects 1 to 9, wherein the frequency band associated with the altimeter is 4.2 gigahertz (GHz) to 4.4 GHz.

[0138] Aspect 11: According to the method described in any one of Aspects 1 to 10, the method further includes: receiving an input from another network node that is at least partially based on the signal or another signal associated with the altimeter; and identifying a trajectory of an aircraft including the altimeter based at least partially on the input, wherein selectively sending includes: selectively sending based at least partially on identifying whether the measurement satisfies the threshold and at least partially on identifying the trajectory of the aircraft.

[0139] Aspect 12: The method of aspect 11, wherein selectively transmitting comprises transmitting the communication based at least in part on the measurement not satisfying the threshold and at least in part on the trajectory of the aircraft indicating that the communication will not interfere with the altimeter.

[0140] Aspect 13: The method of aspect 11, wherein selectively transmitting comprises: refraining from transmitting the communication or transmitting the communication in a selected portion of a transmission frequency band based at least in part on the measurement satisfying the threshold and at least in part on the trajectory of the aircraft indicating that the communication will interfere with the altimeter.

[0141] Aspect 14: A method according to Aspect 11, wherein receiving the input from the other network node includes: receiving a first input from a first other network node and receiving a second input from a second other network node, and wherein identifying the trajectory of the aircraft includes: identifying the trajectory of the aircraft based at least in part on the first input and the second input.

[0142] Aspect 15: The method of aspect 11, wherein the input comprises: another signal associated with the altimeter, another measurement based at least in part on the another signal associated with the altimeter, or an indication of whether to send a communication.

[0143] Aspect 16: According to the method described in any one of Aspects 1 to 15, the method also includes: sending an indication of the signal, an indication of the measurement associated with the signal, or an indication of whether to send communication based at least in part on the measurement associated with the signal to another network node.

[0144] Aspect 17: According to the method described in any one of Aspects 1 to 16, the method further includes: determining that the aircraft associated with the altimeter is within the distance of the network node based at least in part on identifying that the measurement satisfies the threshold; or determining that the aircraft associated with the altimeter is not within the distance of the network node based at least in part on identifying that the measurement does not satisfy the threshold.

[0145] Aspect 18: An apparatus for performing wireless communications at a device, the apparatus 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 one or more of the methods described in Aspects 1 to 17.

[0146] Aspect 19: A device for wireless communication, the device comprising: a memory and one or more processors coupled to the memory, the one or more processors configured to execute the method according to one or more of aspects 1 to 17.

[0147] Aspect 20: An apparatus for wireless communication, the apparatus comprising: at least one component for performing the method according to one or more of aspects 1 to 17.

[0148] Aspect 21: A non-transitory computer-readable medium storing a code for wireless communication, the code comprising: instructions executable by a processor to perform the method according to one or more of aspects 1 to 17.

[0149] Aspect 22: 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 a device, cause the device to perform one or more of the methods described in aspects 1 to 17.

[0150] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the various aspects.

[0151] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware and / or hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language or other names, "software" should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, 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 a combination of hardware and / or hardware and software. It will be apparent that the systems and / or methods described herein can be implemented by a combination of hardware and / or hardware and software in different forms. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit various aspects. Therefore, there is no reference to a specific software code herein to describe the operation and behavior of the system and / or method, because those skilled in the art will understand that software and hardware can be designed to implement the system and / or method based at least in part on the description herein.

[0152] As used herein, "satisfying a threshold" may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0153] Although the specific combination of features is described 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 can be combined in a manner that is not specifically described in the claims and / or is not disclosed in the specification. The disclosure of various aspects includes each dependent claim combined with each other claim in the claim set. As used herein, the phrase "at least one of" the item list refers to any combination of these items (it includes 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, and any combination with multiple identical elements (for example, 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 sorting of a, b and c).

[0154] Any element, action or instruction used herein should not be interpreted as critical or necessary unless explicitly described as such. In addition, as used herein, the article "one" is intended to include one or more items, and can be used interchangeably with "one or more". In addition, as used herein, the article "said" is intended to include one or more items connected to the article "said", and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items, and can be used interchangeably with "one or more". If you want to refer to only one item, the phrase "only one" or similar terms will be used. Moreover, as used herein, the term "having" etc. is intended to be an open term, which does not limit the elements they modify (for example, "having" A elements can also have B). In addition, the phrase "based on" is intended to mean "based at least in part on", unless otherwise explicitly stated. Furthermore, as used herein, the term "or" when used in a series is intended to be open-ended and used interchangeably with "and / or" unless expressly stated otherwise (e.g., if used in conjunction with "either" or "only one of").

Claims

1. An apparatus for wireless communication at a network node, the apparatus comprising: Memory; and one or more processors coupled to the memory, the one or more processors configured to: detecting signals in a frequency band associated with an altimeter; performing measurements associated with the signal; identifying whether the measurement satisfies a threshold; and The transmitting is selectively performed based at least in part on identifying whether the measurement satisfies the threshold.

2. The apparatus of claim 1 , wherein to selectively transmit based at least in part on identifying whether the measurement satisfies the threshold, the one or more processors are configured to transmit the communication based at least in part on identifying that the measurement does not satisfy the threshold.

3. The apparatus of claim 1 , wherein to selectively transmit based at least in part on identifying whether the measurement satisfies the threshold, the one or more processors are configured to refrain from transmitting the communication based at least in part on identifying that the measurement satisfies the threshold.

4. The apparatus of claim 3, wherein to refrain from sending the communication, the one or more processors are configured to delay sending the communication until another measurement associated with another signal detected within the frequency band satisfies the threshold.

5. The apparatus of claim 1 , wherein the threshold is an energy threshold, and wherein performing the measurement comprises: An energy level associated with the signal is determined. 6 . The apparatus of claim 1 , wherein to detect the signal, the one or more processors are configured to perform frequency modulation detection or pulse detection.

7. The apparatus of claim 1, wherein the one or more processors are further configured to identify a transmission frequency band associated with the network node, wherein selectively transmitting comprises: Transmitting within a selected portion of the transmit frequency band is performed based at least in part on identifying that the measurement satisfies the threshold.

8. The apparatus of claim 7, wherein to transmit within the selected portion of the transmit frequency band, the one or more processors are configured to transmit within a first portion of the transmit frequency band that is further away from the frequency band associated with the altimeter, and to refrain from transmitting within a second portion of the transmit frequency band that is closer to the frequency band associated with the altimeter.

9. The apparatus of claim 1, wherein the frequency band associated with the altimeter is 4.2 gigahertz (GHz) to 4.4 GHz.

10. The apparatus of claim 1, wherein the one or more processors are further configured to: receiving an input from another network node based at least in part on the signal or another signal associated with the altimeter; and identifying a trajectory of an aerial vehicle including the altimeter based at least in part on the input, Wherein to selectively transmit, the one or more processors are configured to selectively transmit based at least in part on identifying whether the measurement satisfies the threshold and based at least in part on identifying the trajectory of the aircraft.

11. The apparatus of claim 10, wherein to selectively transmit, the one or more processors are configured to transmit the communication based at least in part on the measurement not satisfying the threshold and at least in part on the trajectory of the aircraft indicating that the communication will not interfere with the altimeter.

12. The apparatus of claim 10, wherein to selectively transmit, the one or more processors are configured to refrain from transmitting the communication or to transmit the communication in a selected portion of a transmit frequency band based at least in part on the measurement satisfying the threshold and at least in part on the trajectory of the aircraft indicating that the communication will interfere with the altimeter.

13. The apparatus of claim 10, wherein receiving the input from the other network node comprises: A first input is received from a first another network node and a second input is received from a second another network node, and wherein identifying the trajectory of the aircraft includes identifying the trajectory of the aircraft based at least in part on the first input and the second input.

14. The apparatus of claim 10, wherein the input comprises: Another signal associated with the altimeter, another measurement based at least in part on the another signal associated with the altimeter, or an indication of whether to send a communication.

15. The apparatus of claim 1, wherein the one or more processors are further configured to send, to another network node, an indication of the signal, an indication of the measurement associated with the signal, or an indication of whether to send a communication based at least in part on the measurement associated with the signal.

16. The apparatus of claim 1, wherein the one or more processors are further configured to: determining that an aircraft associated with the altimeter is within a range of the network node based at least in part on identifying that the measurement satisfies the threshold; or The aircraft associated with the altimeter is determined to be not within the distance of the network node based at least in part on identifying that the measurement does not satisfy the threshold.

17. A method of wireless communication performed by a network node, the method comprising: detecting signals in a frequency band associated with an altimeter; performing measurements associated with the signal; identifying whether the measurement satisfies a threshold; as well as The transmitting is selectively performed based at least in part on identifying whether the measurement satisfies the threshold.

18. The method of claim 17, wherein selectively transmitting based at least in part on identifying whether the measurement satisfies the threshold comprises: sending a communication based at least in part on identifying that the measurement does not satisfy the threshold; or Refraining from sending the communication based at least in part on identifying that the measurement satisfies the threshold.

19. The method of claim 18, wherein refraining from sending the communication comprises: Sending of the communication is delayed.

20. The method of claim 17, wherein the threshold is an energy threshold, and wherein performing the measuring comprises: An energy level associated with the signal is determined.

21. The method according to claim 17, further comprising: A transmission frequency band associated with the network node is identified, wherein selectively transmitting includes transmitting within a selected portion of the transmission frequency band based at least in part on identifying that the measurement satisfies the threshold.

22. The method according to claim 17, further comprising: receiving an input from another network node based at least in part on the signal or another signal associated with the altimeter; as well as identifying a trajectory of an aerial vehicle including the altimeter based at least in part on the input, Wherein selectively transmitting includes selectively transmitting based at least in part on identifying whether the measurement satisfies the threshold and based at least in part on identifying the trajectory of the aircraft.

23. The method of claim 22, wherein selectively transmitting comprises: transmitting the communication based at least in part on the measurement not satisfying the threshold and based at least in part on the trajectory of the aircraft indicating that the communication will not interfere with the altimeter; or The communication is refrained from being transmitted or is transmitted in a selected portion of a transmission frequency band based at least in part on the measurement satisfying the threshold and based at least in part on the trajectory of the aircraft indicating that the communication will interfere with the altimeter.

24. The method of claim 22, wherein receiving the input from the other network node comprises: A first input is received from a first another network node and a second input is received from a second another network node, and wherein identifying the trajectory of the aircraft includes identifying the trajectory of the aircraft based at least in part on the first input and the second input.

25. The method of claim 17, further comprising: An indication of the signal, an indication of the measurement associated with the signal, or an indication of whether to send a communication based at least in part on the measurement associated with the signal is sent to another network node.

26. The method of claim 17, further comprising: determining that an aircraft associated with the altimeter is within a range of the network node based at least in part on identifying that the measurement satisfies the threshold; or The aircraft associated with the altimeter is determined to be not within the distance of the network node based at least in part on identifying that the measurement does not satisfy the threshold.

27. A non-transitory computer readable medium storing an instruction set for wireless communication, the instruction set comprising: One or more instructions that, when executed by one or more processors of a network node, cause the network node to: detecting signals in a frequency band associated with an altimeter; performing measurements associated with the signal; identifying whether the measurement satisfies a threshold; and The transmitting is selectively performed based at least in part on identifying whether the measurement satisfies the threshold.

28. The non-transitory computer-readable medium of claim 27, wherein the one or more instructions that cause the network node to selectively transmit based at least in part on identifying whether the measurement satisfies the threshold cause the network node to: sending a communication based at least in part on identifying that the measurement does not satisfy the threshold; or Refraining from sending the communication based at least in part on identifying that the measurement satisfies the threshold.

29. An apparatus for wireless communication, the apparatus comprising: means for detecting signals in a frequency band associated with an altimeter; means for performing measurements associated with said signal; means for identifying whether the measurement satisfies a threshold; and Means for selectively transmitting based at least in part on identifying whether the measurement satisfies the threshold.

30. The apparatus of claim 29, wherein the means for selectively transmitting based at least in part on identifying whether the measurement satisfies the threshold comprises means for: sending a communication based at least in part on identifying that the measurement does not satisfy the threshold; or Refraining from sending the communication based at least in part on identifying that the measurement satisfies the threshold.

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