Abstract: An auxiliary wireless personal area network system installable in a vehicle includes a plurality of line replaceable units each associated with an avionics subsystem and installable in prescribed locations in the aircraft. At least a subset of the line replaceable units are interconnectable over a dedicated subsystem network. A plurality of network node devices are each associated with a respective one of the plurality of line replaceable units. Each of the network node devices has a microcontroller, an onboard power source independent of any aircraft power source, a local interface connectible the corresponding one of the plurality of line replaceable units, and a wireless network interface connectible to a personal area network independent of the dedicated subsystem network for relaying operational data from the line replaceable unit to the network node device.

Abstract: Techniques are described to detect and/or prevent malicious wireless attacks and/or suspicious wireless activity related to a wireless network in a commercial passenger vehicle. For example, an access point located in the commercial passenger vehicle receives a set of wireless beacon frames from a first wireless device, makes a first determination of a first beacon frame rate of the set of wireless beacon frames, receives a second beacon frame after a first beacon frame, makes a second determination of a second beacon frame rate of the second beacon frame relative to the first beacon frame, makes a third determination that a second wireless device is impersonating the first wireless device upon comparing the first beacon frame rate to the second beacon frame rate, and sends, upon making the third determination, a security alert message to an external input/output (I/O) device in the commercial passenger vehicle.

Abstract: An auxiliary wireless personal area network system installable in a vehicle includes a plurality of line replaceable units each associated with an avionics subsystem and installable in prescribed locations in the aircraft. At least a subset of the line replaceable units are interconnectible over a dedicated subsystem network. A plurality of network node devices are each associated with a respective one of the plurality of line replaceable units. Each of the network node devices has a microcontroller, an onboard power source independent of any aircraft power source, a local interface connectible the corresponding one of the plurality of line replaceable units, and a wireless network interface connectible to a personal area network independent of the dedicated subsystem network for relaying operational data from the line replaceable unit to the network node device.

Abstract: Systems, methods, and computer-readable media for automated detection of relative position among a plurality of wireless access points (WAPs) deployed in service area. An exemplary service area is the passenger cabin of a commercial airplane. The method can include transmitting a signal on a wireless channel at a fixed power level across the service area. Each WAP can measure a signal strength of the signal received from all other WAPs of the plurality of WAPs. The plurality of WAPs can share reports including signal strengths of the signal transmitted from all of the other WAPs. Each WAP can then form a matrix of measured signal strengths and measuring WAPs including the signal strength of signals transmitted by each WAP as received by all other WAPs as the measuring WAPs. The matrix can be used to determine a relative position of the plurality of WAPs based on the first matrix.

Abstract: An in-flight entertainment and communications (IFEC) system configured to stream vehicle operational parameters from avionics systems connected thereto. An avionics interface defines a node of an avionics bus, and the avionics systems are connectible to the avionics interface over the avionics bus to transmit aircraft operational parameters thereto as a raw stream of chronologically sequenced data elements. A data processor is connected to the avionics interface and a network interface, and is receptive to the aircraft operational parameters from the avionics interface. The data processor applies a variable filter that selectively passes a filtered data stream of aircraft operational parameters derived from the raw stream to a data storage device. The variable filter is defined by one or more filter parameters dynamically adjustable in response to changing conditions derived from the aircraft operational parameters. The filtered data stream is transmitted to the remote monitoring station.

Abstract: Techniques are described to detect and/or prevent malicious wireless attacks and/or suspicious wireless activity related to a wireless network in a commercial passenger vehicle. For example, an access point located in the commercial passenger vehicle receives a set of wireless beacon frames from a first wireless device, makes a first determination of a first beacon frame rate of the set of wireless beacon frames, receives a second beacon frame after a first beacon frame, makes a second determination of a second beacon frame rate of the second beacon frame relative to the first beacon frame, makes a third determination that a second wireless device is impersonating the first wireless device upon comparing the first beacon frame rate to the second beacon frame rate, and sends, upon making the third determination, a security alert message to an external input/output (I/O) device in the commercial passenger vehicle.

Abstract: Systems, methods, and computer-readable media for automated detection of relative position among a plurality of wireless access points (WAPs) deployed in service area. An exemplary service area is the passenger cabin of a commercial airplane. The method can include transmitting a signal on a wireless channel at a fixed power level across the service area. Each WAP can measure a signal strength of the signal received from all other WAPs of the plurality of WAPs. The plurality of WAPs can share reports including signal strengths of the signal transmitted from all of the other WAPs. Each WAP can then form a matrix of measured signal strengths and measuring WAPs including the signal strength of signals transmitted by each WAP as received by all other WAPs as the measuring WAPs. The matrix can be used to determine a relative position of the plurality of WAPs based on the first matrix.

Abstract: An in-flight entertainment and communications (IFEC) system configured to stream vehicle operational parameters from avionics systems connected thereto. An avionics interface defines a node of an avionics bus, and the avionics systems are connectible to the avionics interface over the avionics bus to transmit aircraft operational parameters thereto as a raw stream of chronologically sequenced data elements. A data processor is connected to the avionics interface and a network interface, and is receptive to the aircraft operational parameters from the avionics interface. The data processor applies a variable filter that selectively passes a filtered data stream of aircraft operational parameters derived from the raw stream to a data storage device. The variable filter is defined by one or more filter parameters dynamically adjustable in response to changing conditions derived from the aircraft operational parameters. The filtered data stream is transmitted to the remote monitoring station.