Rockwell Collins, Inc.

Robert W Hartney

Tj T Kwon

T J T Kwon

Dayton G Smith

A system and method for hybrid any-cast (unicast, multicast and anycast) routing in a mobile ad hoc communication network (MANET) is disclosed. In embodiments, each communication node of the MANET may implement on-demand routing functions whereby the node does not establish or maintain routes to destination nodes unless there is active communication, discovering routes via flooding of data packets in transit. Each communication node may select, or may transition from on-demand to, proactive routing functions. Proactive nodes first establish routes to clusters of other proactive nodes by flooding, and receiving acknowledgments from, the other proactive nodes. Each cluster of proactive nodes maintains routes within the cluster and establishes communication routes outside the cluster by flooding and relaying of routing status messages via clusterhead and gateway nodes. A single MANET can support clusters of proactive nodes within a network of on-demand nodes and dynamic transitions between proactive and on-demand status.

Zero overhead efficient flooding (ZOEF) oriented hybrid any-cast routing for mobile ad hoc networks (MANET)

A method of performing error recovery of encrypted data frames is disclosed. A data packet is received, and a decryption operation is performed on the data packet. The data packet is compared with one or more data packets stored in a recovery buffer to identify a duplicate of the data packet when the decryption operation fails. One or more bits affected by one or more bit errors are identified based on a comparison between the data packet and the duplicate of the data packet. Different combinations of bit values for the one or more bits are determined. The decryption operation is performed on the data packet with the different combinations to identify a correct combination of bit values for the one or more bits. The data packet is recovered (e.g., corrected so that it can be decrypted and consumed) based on the correct combination of bit values.

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Cedar Rapids, IA, United States of America

Robert W Hartney