DeviceQueueSchedulerLoop starts an infinit loop calling the scheduler loop for Class-B and Class-C sheduling.

MulticastQueueSchedulerLoop starts an infinit loop calling the multicast scheduler loop.

ScheduleDeviceQueueBatch schedules a downlink batch (Class-B or Class-C).

ScheduleMulticastQueueBatch schedules a donwlink multicast batch (Class-B & -C).

Setup sets up the downlink.