Patent ID: 7929482
Filing Date: 2011-04-19
Classification: H04B,H04L

Abstract:
1. A method for selecting a forward link data rate and a return link data rate for a mobile satellite communications link, the method comprising the steps of: determining a forward link retransmission margin value and a return link retransmission margin value; calculating, by a processor, a total forward link margin and a total return link margin, wherein the total forward link margin comprises a sum of the forward link retransmission margin value, a forward link priority margin, a forward link message type margin, and a forward link balance margin; computing a last known forward link carrier power to noise power spectral density ratio and a last known return link carrier power to noise power spectral density ratio; subtracting the total forward link margin from the last known forward link carrier power to noise power spectral density ratio to obtain an estimated forward link carrier power to noise power spectral density ratio; subtracting the total return link margin from the last known return link carrier power to noise power spectral density ratio to obtain an estimated return link carrier power to noise power spectral density ratio; and selecting the forward link data rate and the return link data rate from the estimated forward link carrier power to noise power spectral density ratio and the estimated return link carrier power to noise power spectral density ratio.