Patent ID: 6711139
Filing Date: 2004-03-23
Classification: H04B

Abstract:
A satellite communication system with random access processing of packet data, comprising:a first external terminal and an associated first random access controller that transmits packet data received from said first external terminal and that performs random access processing of the packet data when receipt of the packet data from the first random access controller is not confirmed; a second external terminal and an associated second random access controller that transmits packet data received from said second external terminal and that performs random access processing of the packet data when receipt of the packet data from the second random access controller is not confirmed; a selector connected to said first and second random access controllers for transmitting packet data received from said first and second random Access controllers; a collision detector connected to said first and second random access controllers and to said selector for detecting a collision between packet data transmitted from said first and second random access controllers, wherein when said collision detector detects a collision between packet data transmitted from said first and second random access controllers, said collision detector informs said second random access controller and in response said second random access controller delays transmission of packet data from said second random access controller; and a transmitter and antenna for transmitting the packet data from said selector as a radio wave signal.