US Patent 11395107 Multicast assisted parking lot management

A point-to-multipoint retransmit of the parking availability data is performed with a predefined update period. A quantity of unicast requests for parking availability is received via one or more cellular towers. If the quantity of unicast requests received within the predefined update period exceeds a ratio of point-to-multipoint bandwidth to unicast messaging bandwidth of the one or more cellular towers, a transition is made to use of the point-to-multipoint messaging for sending the parking availability data via the one or more cellular towers; and otherwise, a transition is made to use of the unicast messaging for sending the parking availability data via the one or more cellular towers.