Patent ID: 11924756
Assignee: ONEEVENT TECHNOLOGIES, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A method comprising:
determining by a first node in a communications network, a predicted battery life of the first node;
determining by the first node, a listening schedule to be used by the first node, the listening schedule of the first node is a selection of a time slot from within a frame length comprising a first number of time slots, the first number of time slots determined by the first node using at least the predicted battery life of the first node;
determining by a second node in a communications network, a predicted battery life of the second node;
determining by the second node, a listening schedule to be used by the second node, the listening schedule of the second node is a selection of a time slot from within a frame length comprising a second number of time slots, the second number of time slots determined by the second node using at least the predicted battery life of the second node;
the first node receiving a synchronizing time signal from a plurality of other nodes, the first node averaging the received synchronizing time signals and adjusting its own timing signal to correspond to the averaged synchronizing time signal;
the first node communicating its listening schedule to the second node;
the second node broadcasting a message to the first node at a time corresponding to the listening schedule transmitted by the first node to the second node, the broadcast message comprising sensor information from the second node representing an evacuation condition and a location of the second node;
the first node transmitting information from the message to a third node using a listening schedule of the third node; and
repeating the transmission of the message to a plurality of nodes using the listening schedule for each of the plurality of nodes until the message is received by a decision node.