Methods for communicating between elements in a hierarchical floating car data network
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 1, 2005
Grant Date -
Nov 18, 2004
app pub date -
May 12, 2003
filing date -
May 12, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Participating vehicles and egress points communicate with each other according to an infrastructure mode. Participating vehicles communicate with other participating vehicles according to an ad-hoc mode. In an infrastructure mode packet transmitting method for a participating vehicle, beacon service table packets, vehicle service table packets, or packet bursts are created and transmitted. In an infrastructure mode packet receiving method for a participating vehicle, beacon service table packets, vehicle service table packets, packet bursts, or negative acknowledgement packets are received. In an infrastructure mode packet transmitting method for an egress point, an enhanced beacon packet or a negative acknowledgement packet is created and transmitted. In an infrastructure mode packet receiving method for an egress point, beacon service table packets, vehicle service table packets, or packets bursts are received. In an ad-hoc mode packet transmitting method for a participating vehicle, beacon service table packets, vehicle service table packets, packet bursts, or positive acknowledgement packets are created and transmitted. In an ad-hoc mode packet receiving method for a participating vehicle, beacon service table packets, vehicle service table packets, packet bursts, or positive acknowledgement packets are received.
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