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Interface Supports Multiple Broadcast Transceivers for Flight ApplicationsA wireless avionics interface provides a mechanism for managing multiple broadcast transceivers. This interface isolates the control logic required to support multiple transceivers so that the flight application does not have to manage wireless transceivers. All of the logic to select transceivers, detect transmitter and receiver faults, and take autonomous recovery action is contained in the interface, which is not restricted to using wireless transceivers. Wired, wireless, and mixed transceiver technologies are supported. This design s use of broadcast data technology provides inherent cross strapping of data links. This greatly simplifies the design of redundant flight subsystems. The interface fully exploits the broadcast data link to determine the health of other transceivers used to detect and isolate faults for fault recovery. The interface uses simplified control logic, which can be implemented as an intellectual-property (IP) core in a field-programmable gate array (FPGA). The interface arbitrates the reception of inbound data traffic appearing on multiple receivers. It arbitrates the transmission of outbound traffic. This system also monitors broadcast data traffic to determine the health of transmitters in the network, and then uses this health information to make autonomous decisions for routing traffic through transceivers. Multiple selection strategies are supported, like having an active transceiver with the secondary transceiver powered off except to send periodic health status reports. Transceivers can operate in round-robin for load-sharing and graceful degradation.
Document ID
20110003006
Acquisition Source
Jet Propulsion Laboratory
Document Type
Other - NASA Tech Brief
Authors
Block, Gary L.
(California Inst. of Tech. Pasadena, CA, United States)
Whitaker, William D.
(California Inst. of Tech. Pasadena, CA, United States)
Dillon, James W.
(California Inst. of Tech. Pasadena, CA, United States)
Lux, James P.
(California Inst. of Tech. Pasadena, CA, United States)
Ahmad, Mohammad
(California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 25, 2013
Publication Date
January 1, 2011
Publication Information
Publication: NASA Tech Briefs, January 2011
Subject Category
Man/System Technology And Life Support
Report/Patent Number
NPO-46317
Report Number: NPO-46317
Distribution Limits
Public
Copyright
Public Use Permitted.
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