Patent ID: 8493877
Filing Date: 2013-07-23
Classification: H04W

Abstract:
1. A method for determining a maximum symbol rate of a return communication link from a user terminal to a satellite, the method comprising: assigning transmission opportunities at a current symbol rate to the user terminal, the current symbol rate equal to a first symbol rate; receiving a plurality of messages during the assigned transmission opportunities at the current symbol rate from the user terminal; first determining if a number of the plurality of messages incorrectly received is less than a threshold number of incorrect messages and second determining if a power amplifier of the user terminal is operating in a linear region; if the number of the plurality of messages first determined to be incorrectly received is less than the threshold number of incorrect messages and if the power amplifier is second determined to be operating in the linear region, assigning a channel at the current symbol rate to the user terminal as a home channel for the user terminal; if the power amplifier is second determined to be operating in a compression region, repeating the transmission opportunities assigning, receiving, and first determining at the current symbol rate equal to a second symbol rate; and if the number of the plurality of messages first determined to be incorrectly received is greater than or equal to the threshold number of incorrect messages and if not all messages of the plurality of messages are third determined to be incorrectly received, repeating the receiving and first determining at the current symbol rate until a number of a latest plurality of messages first determined to be incorrectly received is less than the threshold number of incorrect messages or a number of instances of the receiving and first determining at the current symbol rate is fourth determined to be equal to a maximum number of instances.