System and method for beam directional nulling for SRS-based data beams

A method comprising:

• configuring a data beam to be transmitted to a user equipment (UE) to have a null area in a direction of a satellite earth station (ES), the null area defining a space within a coverage area of the data beam in which a signal from the data beam is suppressed, wherein configuring the data beam further comprises:
• generating a steering vector to the ES;
• obtaining a UE channel matrix via a sounding reference signal (SRS);
• determining a rank value;
• determining a beamforming vector based on increasing a received signal power at the UE without exceeding a power leakage constraint in the direction of the ES, wherein the power leakage constraint is a function of (i) a threshold parameter associated with a nulling level in the direction of the ES and (ii) the steering vector to the ES;
• and
• generating, based on the beamforming vector, a beamforming precoder configured to directional null the data beam in the direction of the ES;
• and
• transmitting, via a transceiver, the generated data beam to the UE.

A non-transitory computer readable medium comprising instructions that, when executed by at least one processor, cause the at least one processor to:

• configure a data beam to be transmitted to a user equipment (UE) to have a null area in a direction of a satellite earth station (ES), the null area defining a space within a coverage area of the data beam in which a signal from the data beam is suppressed, wherein to configure the data beam, the processor is further configured to:
• generate a steering vector to the ES;
• obtain a UE channel matrix via a sounding reference signal (SRS);
• determine a rank value;
• determine a beamforming vector based on increasing a received signal power at the UE without exceeding a power leakage constraint in the direction of the ES, wherein the power leakage constraint is a function of (i) a threshold parameter associated with a nulling level in the direction of the ES and (ii) the steering vector to the ES;
• and
• generate, based on the beamforming vector, a beamforming precoder configured to directional null the data beam in the direction of the ES;
• and
• transmit, via a transceiver, the generated data beam to the UE.