US 12,137,064 B2
Communication terminal for addressed messaging within an automated identification system arrangement using aid to navigation transponder
Lynne A. Tablewski, San Diego, CA (US); John Clark Stastny, San Diego, CA (US); Sparta Cheung, San Diego, CA (US); Vladimir Y. Matveyev, San Diego, CA (US); and Bryan David Bagnall, Menlo Park, CA (US)
Assigned to United States of America as represented by the Secretary of the Navy, Washington, DC (US)
Filed by The United States of America, as represented by the Secretary of the Navy, San Diego, CA (US)
Filed on Aug. 24, 2022, as Appl. No. 17/894,987.
Claims priority of provisional application 63/399,447, filed on Aug. 19, 2022.
Prior Publication US 2024/0063960 A1, Feb. 22, 2024
Int. Cl. H04L 5/00 (2006.01); H04L 9/40 (2022.01); H04K 1/00 (2006.01)
CPC H04L 5/0044 (2013.01) [H04L 5/0055 (2013.01); H04L 63/1475 (2013.01); H04K 1/00 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A communication terminal for addressed messaging within an Automated Identification System (AIS) arrangement, the communication terminal comprising:
a processor;
a user interface for facilitating the addressed messaging, which includes chat messaging addressed between the communication terminal and a participant terminal of the AIS arrangement, automatic position messaging addressed from the communication terminal to a monitoring terminal of the AIS arrangement, and situational report messaging addressed from the communication terminal to a situational awareness terminal of the AIS arrangement; and
an Aid to Navigation (AtoN) transponder of the AIS arrangement coupled to the user interface for transmitting and receiving that achieves the addressed messaging;
wherein the AIS complies with a standard denoted Recommendation ITU-R M.1371-5 Technical characteristics for an automatic identification system using time division multiple access in the VHF maritime mobile frequency band;
the communication terminal further comprising a computer coupled to the AtoN transponder and supporting the user interface, the computer programmed to:
display a configuration template of the communication terminal at the user interface, the configuration template for specifying an alert condition and a specified guard area, the alert condition selected from the group consisting of a current local Global Positioning System (GPS) position of the AtoN transponder of the communication terminal entering into the specified guard area and a current remote GPS position of an AIS transponder of a remote terminal entering into the specified guard area;
continuously listen for the AtoN transponder to provide the current local GPS position of the AtoN transponder;
repeatedly accept receipt from the AtoN transponder of an incoming position message from the remote terminal that includes the current remote GPS position of the AIS transponder of the remote terminal; and
raise the alert condition at the user interface in response to the current local GPS position of the AtoN transponder of the communication terminal entering into the specified guard area or the current remote GPS position of the AIS transponder of the remote terminal entering into the specified guard area.