Patent ID: 9300423
Filing Date: 2016-03-29
CPC Classification: G08G,H04J,H04L,H04W

Claim Text:
1. A device of manufacture for sending and receiving vehicle-to-vehicle (V2V) safety messages, in a V2V communication system, comprising a transceiver in a subject vehicle wherein the transceiver is configured to wirelessly broadcast and receive messages comprising a protocol comprising: a synchronized time base used by all V2V transceivers in the V2V communication system; a basic time interval, of a predetermined duration, repeating continuously and contiguously, responsive to the synchronized time base; n contiguous time slots, of a predetermined duration, enumerated from 1 to n, wherein the basic time interval comprises the n time slots; wherein at least some messages are transmitted in a time-division, multiple-access (TDMA) protocol comprising the basic time interval and the time slots; an algorithm for self-selecting a selected time slot by the V2V transceiver; an internal time base synchronization function; wherein the time base synchronization function is responsive to (i) a global positioning satellite transmission; (ii) an internal clock; and (iii) a plurality of valid transmissions received from a plurality of similar transceivers in other vehicles within wireless communication range; and wherein the time base synchronization function adjusts the synchronized time base such that it is synchronized with the V2V transceivers in the V2V communication system.