Patent ID: 7702284

Claim:
A method of controlling a multicast transmission, comprising: transmitting a data packet to a plurality of devices across an ultra wideband (UWB) wireless network; detecting the reception of any acknowledgement transmissions, wherein each acknowledgement transmission indicates reception of the data packet by a respective one of the plurality of devices; generating a correlation signal based on correlating received signals with a predetermined acknowledgment sequence; retransmitting the data packet to at least one of the plurality of devices when an acknowledgement is not detected for each of the plurality of devices; counting the number of consecutive times an acknowledgement packet is not received from a particular one of the plurality of devices; and forgoing retransmission of the data packet when said number of consecutive times exceeds a first predetermined threshold and when the correlation signal fails to exceed a second predetermined threshold during each of a plurality of time slots allocated to respective ones of the plurality of devices.