Patent ID: 8295196

Claim:
A method for transmitting an information packet from a first node to a second node within an asynchronous wireless communication network, wherein said nodes use respective clock signals for timing operation thereof, wherein at least said second node comprises a radio transceiver having an intermittent operation, said intermittent operation corresponding to a periodic sequence of awake intervals and sleep intervals, wherein the method comprises, when said information packet is ready to be transmitted by said first node: estimating by said first node a start time of an awake interval of said second node through at least one previous transmission of an information packet from said first node to said second node; determining by said first node a transmission time based on at least one estimated start time; and starting by said first node transmission of said information packet to said second node at the determined transmission time, said first node estimating said start time based on at least time offset information and clock drift information transmitted from said second node to said first node on occasion of said at least one previous transmission.