Patent ID: 7496059

Claim:
A method of waking up sensor nodes in a wireless mobile ad hoc sensor network, comprising: a. initiating formation of a wireless mobile ad hoc sensor network by wirelessly broadcasting a single wake-up signal one time by a first sensor node with at least one parameter that increases a processing gain of the wake-up signal to make it more likely to be received by other sensor nodes which prior to reception of the wake-up signal in an isolated state unaware of other sensors nodes or the existence of a network; b. receiving the wake-up signal from the first sensor node at at least a second sensor node, and in response thereto, the second node entering a wake-up state; and c. in response to the second node entering the wake-up state, said second sensor node rebroadcasting the wake-up signal to wake-up other isolated sensor nodes prior to the second sensor node switching to a higher power consumption receiver to receive a synchronization message from the first sensor node.