Methods, systems and computer program products for slotted-ALOHA collision improvement by population density timeslot selection per radio frequency propagation pathloss

An endpoint in a communications network implementing a modified slotted ALOHA protocol the endpoint comprising a processor configured to:

• receive an ALOHA message having a received downlink strength at the endpoint;
• self-determine an uplink strength derived by measurement of the downlink strength;
• and
• allocate a timeslot for uplink transmission from the endpoint based on the self-determined uplink strength,
• wherein the communications network implementing a modified slotted ALOHA protocol includes a plurality of timeslots;
• and
• wherein a spacing between each of the plurality of timeslots is from about 5 to about 30 dB and wherein each of the plurality of timeslots has a duration from about 30 seconds to about 1 minute.

A computer program product for determining a transmission timeslot at an endpoint in a communications network implementing a slotted ALOHA protocol, the computer program product comprising:

• a non-transitory computer readable storage medium having computer readable program code embodied in the medium, the computer readable program code comprising:
• computer readable program code to receive an ALOHA message having a received downlink strength at an endpoint;
• computer readable program code to determine an uplink strength for the endpoint based on information in the received message;
• and
• computer readable program code to allocate a timeslot for uplink transmission from the endpoint based on the determined uplink strength,
• wherein the communications network implementing a modified slotted ALOHA protocol includes a plurality of timeslots;
• and
• wherein a spacing between each of the plurality of timeslots is from about 5 to about 30 dB and wherein each of the plurality of timeslots has a duration from about 30 seconds to about 1 minute.