Method and system of frame timing synchronization in TDMA based

Details Method and system of frame timing synchronization in TDMA based Method and system of frame timing synchronization in TDMA based

1995-06-29

1998-08-04

Mullen, Jr., Thomas J.

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

370324, H04B 719

Patent

active

057909393

ABSTRACT:
A method and system for synchronizing transmission TDMA frames in a mobile satellite communication system are disclosed herein. The method of synchronizing a transmitted frame timing in a mobile satellite communication system comprises the steps of broadcasting a frame timing offset from a satellite to a mobile terminal having a timer, receiving the frame timing offset information transmitted by the satellite in the mobile terminal, and adjusting the timer in the mobile terminal based on the timing offset information. The system includes a plurality of mobile terminals; a satellite adapted to communicate with each of the mobile terminals, the satellite having a satellite reference frame timing; at least one gateway in communication with the satellite, the gateway having a digital processor, the digital processor including a routine for calculating a frame timing offset; with the gateway transmitting the timing offset to at least one of the mobile terminals, the at least one mobile terminal receiving the timing offset and adjusting the mobile terminal transmit frame timing to compensate for the timing offset.

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