Orbital base station filtering of interference from terrestrial-terrestrial communications of devices that use protocols in common with orbital-terrestrial communications

A multiple access transceiver adapted for operation in Earth orbit and configured for communication with terrestrial mobile devices, the terrestrial mobile devices also capable of communicating with terrestrial base stations, the multiple access transceiver comprising:

• a transceiver capable of receiving an inbound signal comprising a plurality of device signals, each sent from a terrestrial mobile device of some of the terrestrial mobile devices comprising a first plurality of the terrestrial mobile devices that are communicating with terrestrial base stations and a particular mobile device that is distinct from the first plurality of the terrestrial mobile devices;
• a filtering module, installed as part of the multiple access transceiver, that performs the steps of:
• (a) computing a counterpart signal of device signals received by the transceiver during a sounding period, the sounding period being a time when the multiple access transceiver is known to not be receiving from the particular mobile device;
• and
• (b) applying the counterpart signal to a first portion of the inbound signal received during a signaling period to produce a filtered signal comprising a particular device signal from the particular mobile device, wherein the particular device signal is distinct from signals transmitted by the first plurality of the terrestrial mobile devices during the signaling period;
• and
• a signal demodulator that demodulates the filtered signal to produce a demodulated signal corresponding to the particular device signal from the particular mobile device.