MULTIPLE ACCESS COMMUNICATION SYSTEM FOR MOVEABLE OBJECTS
First Claim
1. A communication system on the same RF frequency with several moving participants (20, 21, 22, 23, 24, 25) that are each equipped with a communication device (10) for exchanging information having a transmitter and receiver (1, 2) characterized by a method, for detecting free transmission periods (8) which control the transmission of the transmitter (1).
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Accused Products
Abstract
A non-complex low cost communication, navigation and identification system and method for use with moveable or stationery objects on the same frequency without interference. The present invention listens before each transmission and transmits only when there are no other protocols transmitting, thus avoiding communication collisions and supporting high channel load scenarios.
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Citations
21 Claims
- 1. A communication system on the same RF frequency with several moving participants (20, 21, 22, 23, 24, 25) that are each equipped with a communication device (10) for exchanging information having a transmitter and receiver (1, 2) characterized by a method, for detecting free transmission periods (8) which control the transmission of the transmitter (1).
Specification