Method to eliminate frequency offset introduced in a network

A remote that communicates in a star/mesh communication system with another remote via a repeater and also communicates with a hub, the remote comprising:

• a transceiver configured to transmit a first signal to the hub via a repeater, the first signal being received at the hub with a frequency offset of RHOffset, as follows
• RHOffset=TxTDMAOffset(1)+RUCOffset+SatelliteOffset+HDCOffset
• wherein TxTDMAOffset(1) is a frequency offset from a nominal frequency used by the remote, RUCOffset is a frequency offset introduced during an up-conversion in the remote, SatelliteOffset is a frequency offset introduced at the repeater during Uplink/Downlink conversion, and HDCOffset is a frequency offset introduced at the hub during a down conversion;
• the remote further configured to receive a command from the hub to change the value of TxTDMAOffset(1) to TxTDMAOffset(2) so that RHOffset=0, as follows
• TxTDMAOffset(2)=−(SatelliteOffset+HDCOffset)−RUCOffset;
• the remote is further configured to periodically receive a frequency offset value HHOffset from the hub, which is calculated by the hub in a loopback mode, as follows
• HHOffset=HUCOffset+SatelliteOffset+HDCOffset
• wherein HUCOffset is a frequency offset introduced during an up-conversion in the hub, and HDCOffset is a frequency offset introduced during a down-conversion in the hub;
• the remote is further configured to receive a second signal from the hub via the repeater, and configured to measure a frequency offset of the second signal HROffset, as follows
• HROffset=HUCOffset+SatelliteOffset+RDCOffset
• wherein RDCOffset is a frequency offset introduced during down-conversion in the remote;
• the transceiver further configured to receive, via the repeater, a third signal from the another remote, and prior to receiving the third signal, estimate a frequency offset RROffset of the third signal, as follows
• RROffset=HROffset−HHOffset.

A non-transitory computer readable media storing computer program instructions, which when executed by a computer in a remote cause the remote to communicate in a star/mesh communication system with another remote via a repeater and also with a hub via the repeater, including steps comprising:

• transmitting a first signal to the hub via a repeater, the first signal being received at the hub with a frequency offset of RHOffset, as follows RHOffset=TxTDMAOffset(1)+RUCOffset+SatelliteOffset+HDCOffset wherein TxTDMAOffset(1) is a frequency offset from a nominal frequency used by the remote, RUCOffset is a frequency offset introduced during an up-conversion in the remote, SatelliteOffset is a frequency offset introduced at the repeater during Uplink/Downlink conversion, and HDCOffset is a frequency offset introduced at the hub during a down conversion;
• receiving a command from the hub to change the value of TxTDMAOffset(1) to TxTDMAOffset(2) so that RHOffset=0, as follows TxTDMAOffset(2)=−(SatelliteOffset+HDCOffset)−RUCOffset;
• periodically receiving a frequency offset value HHOffset from the hub, which is calculated by the hub in a loopback mode, as follows HHOfset=HUCOffset+SatelliteOffset+HDCOffset wherein HUCOffset is a frequency offset introduced during an up-conversion in the hub, and HDCOffset is a frequency offset introduced during a down-conversion in the hub;
• receiving a second signal from the hub via the repeater;
• measuring a frequency offset of the second signal HROffset, as follows HROffset=HUCOffset+SatelliteOffset+RDCOffset wherein RDCOffset is a frequency offset introduced during down-conversion in the remote;
• receiving, via the repeater, a third signal from the another remote;
• and prior to receiving the third signal, estimating a frequency offset RROffset of the third signal, as follows RROffset=HROffset−HHOffset.

A method for peer remote communications in a star/mesh communication system between a first remote and a second remote via a repeater, the method comprising:

• transmitting a first signal to the hub via a repeater, the first signal being received at the hub with a frequency offset of RHOffset, as follows
• RHOffset=TxTDMAOffset(1)+RUCOffset+SatelliteOffset+HDCOffset
• wherein TxTDMAOffset(1) is a frequency offset from a nominal frequency used by the remote, RUCOffset is a frequency offset introduced during an up-conversion in the remote, SatelliteOffset is a frequency offset introduced at the repeater during Uplink/Downlink conversion, and HDCOffset is a frequency offset introduced at the hub during a down conversion;
• receiving a command from the hub to change the value of TxTDMAOffset(1) to TxTDMAOffset(2) so that RHOffset=0, as follows
• TxTDMAOffset(2)=−(SatelliteOffset+HDCOffset)−RUCOffset;
• periodically receiving a frequency offset value HHOffset from the hub, which is calculated by the hub in a loopback mode, as follows
• HHOfset=HUCOffset+SatelliteOffset+HDCOffset
• wherein HUCOffset is a frequency offset introduced during an up-conversion in the hub, and HDCOffset is a frequency offset introduced during a down-conversion in the hub;
• receiving a second signal from the hub via the repeater;
• measuring a frequency offset of the second signal HROffset, as follows
• HROffset=HUCOffset+SatelliteOffset+RDCOffset
• wherein RDCOffset is a frequency offset introduced during down-conversion in the remote;
• receiving, via the repeater, a third signal from the another remote;
• and
• prior to receiving the third signal, estimating a frequency offset RROffset of the third signal, as follows
• RROffset=HROffset−HHOffset.