Enhanced data link communication over iridium

摘要

A method to reduce latency in a data link communication is provided. The method includes compressing a data packet to be uplinked from a ground station to an aircraft communications addressing and reporting system (ACARS) in an aircraft and determining a packet size of the data packet. The aircraft communications addressing and reporting system is configured to receive packets having a packet size less than or equal to a first threshold packet size. An Iridium router based unrestricted digital inter-working connectivity solution data service is implemented to uplink the compressed data packet if the packet size exceeds a second threshold packet size. A short burst data service is implemented to uplink the compressed data packet if the packet size is less than or equal to the second threshold packet size.

主权项

1. A method to reduce latency in a data link communication, the method comprising:
compressing a first data packet to be uplinked from a ground station to an aircraft-data-link device in an aircraft, the aircraft-data-link device configured to receive packets having a packet size less than or equal to a first threshold packet size; determining a packet size of the compressed first data packet; when the packet size exceeds a second threshold packet size, transmitting the compressed first data packet over an uplink via a SATCOM communication link over a circuit switched data service that keeps a first connection open between the ground station and a transceiver onboard the aircraft, until the last bit of data for a session between the ground station and the aircraft-data-link device is sent, to transfer the compressed first data packet having the packet size exceeding the second threshold packet size, wherein a circuit is defined for the first connection before the first connection is made; and when the packet size is less than or equal to the second threshold packet size, transmitting the compressed first data packet over the uplink via the SATCOM communication link via a packet switched data service that keeps a second connection between the ground station and the transceiver open long enough to send only the compressed first data packet having the packet size less than or equal to the second threshold packet size and then closes the second connection.