Patent ID: 7849391

Claim:
A method in a receiver comprising: wirelessly receiving a packet, the packet including a header, the header including if the packet conforms to a wireless network standard reserved bit locations set to respective correct values or correct combinations of values; receiving a start-of-packet (SOP) trigger that indicates that the packet may have been received; and checking one or more of the bit locations to ascertain whether bit location contents have their respective correct values or combinations of values, wherein the header includes, if conforming to the wireless network standard, at least a first field modulated at a known rate that includes an indication of the data rate of one or more other parts of the packet, wherein the checking includes checking the contents of the first field and one or more other locations in the packet, and wherein the checking the one or more other locations in the packet includes ascertaining whether or not an error detecting code is included, and in the case it is ascertained that such an error detecting code is included, checking the included error detecting code.