A method and system for providing time division multiple access communications is disclosed. The disclosure includes sending a first message in a time slot. The time slot has a slot length. The first message has a first time associated therewith. The first time includes the time required to send the first message and the propagation delay associated with the reception of the first message by a second transceiver. The disclosure also includes determining time remaining in the time slot for sending a second message. The time remaining is based on the first time and the slot length. The disclosure also relates to sending a second message in the time slot if the length of the second message plus the length of the propagation delay associated with the second message is less than the time remaining in the time slot.