System and method of adaptive interference avoidance in multi-beam satellite communications network

A system for mitigation of interference local to remote terminals, comprising:

• a memory, configured to store a local interference data indicating, for a remote terminal, a local interference at the remote terminal to reception of one or more among a plurality of sub-carriers;
• a sub-carrier assignment logic, configured to determine the remote terminal being a destination terminal for a packet and, in response, to
• select for the remote terminal, based at least in part on the local interference data, a sub-carrier among the sub-carriers not indicated as having local interference to reception at the remote terminal, and
• generate a sub-carrier assignment data, addressed to the destination terminal, identifying the sub-carrier selected for the remote terminal;
• an encapsulation logic, configured to encapsulate the packet in an encapsulation frame;
• a modulation-coding logic, configured to generate a modulation symbol stream based at least in part on the content of the packet;
• a modulated signal generator, configured to generate a local modulated sub-carrier signal based at least in part on the modulation symbol stream;
• and
• a wireless transmitter, configured to wirelessly transmit, for receipt at least at the destination terminal, a sub-carrier assignment notice carrying the sub-carrier assignment data, and an amplified modulated wireless sub-carrier signal, based at least in part on the modulated sub-carrier signal,
• wherein:
• the packet is a first packet,
• the local interference data indicates:
• for the first remote terminal, a local interference to reception of a given one of the sub-carriers, and
• for a second remote terminal, a local interference to reception of the given one of the sub-carriers,
• the sub-carrier assignment logic is further configured to determine the second remote terminal being a destination for a second packet,
• the encapsulation logic is further configured to encapsulate the second packet and the first packet in the encapsulation frame, based at least in part on the local interference data indicating reception of at least one of the sub-carriers at both the first remote terminal and the second remote terminal, and
• the sub-carrier assignment logic is further configured to assign to the encapsulation frame a sub-carrier other than the given one of the sub-carriers.

A method for mitigation of interference local to remote terminals, comprising:

• receiving a packet indicating any of the remote terminals as a destination terminal;
• accessing a given local interference data to determine whether any sub-carriers among a given plurality of sub-carriers are indicated as having local interference to reception at the destination terminal;
• loading a content of the packet into the queue associated with the selected sub-carrier;
• detecting a current fill depth of the queues;
• selecting, for the remote terminal, a sub-carrier for sending the packet to the remote terminal, from among the sub-carriers indicated by the local interference data as not having local interference to reception at the destination terminal, wherein selecting the sub-carrier is based, at least in part, on the current fill depth of the queues;
• transmitting to the destination terminal a sub-carrier assignment data, identifying the sub-carrier selected for the remote terminal;
• and
• wireless transmitting, for receipt by at least at the destination terminal, a wireless modulation of the selected sub-carrier, the modulation carrying an information from which a content of the packet can be extracted, wherein the wireless transmitting includes de-queueing the content of the packet as an input to the wireless transmitting.

A method for mitigation of interference local to remote terminals, comprising:

• receiving a packet indicating any of the remote terminals as a destination terminal;
• assigning to the packet a modulation-coding pair, the modulation-coding pair indicating a particular coding to be applied to the packet, and a particular modulation to be applied to a result of the coding;
• loading the packet into a modulation-coding queue associated with the assigned modulation-coding pair;
• de-queuing the packet from the modulation-coding queue, in an ordering relative to modulation-coding queues associated with the other modulation-coding pairs, based at least in part on relative priorities of the packets in the modulation-coding queues
• accessing a given local interference data to determine whether any sub-carriers among a given plurality of sub-carriers are indicated as having local interference to reception at the destination terminal;
• selecting, for the remote terminal, a sub-carrier for sending the packet to the remote terminal, from among the sub-carriers indicated by the local interference data as not having local interference to reception at the destination terminal;
• encapsulating the packet in the encapsulation frame;
• generating a modulation symbol stream based at least in part on the content of the packet in the encapsulation frame;
• transmitting to the destination terminal a sub-carrier assignment data, identifying the sub-carrier selected for the remote terminal;
• and
• wireless transmitting, for receipt by at least at the destination terminal, a wireless modulation of the selected sub-carrier, the wireless modulation of the sub-carrier being based, at least in part, on the modulation symbol stream, and the wireless modulation carrying an information from which a content of the packet can be extracted.