g alternate zeros and ones followed by a start symbol the receiver node 102 sets its local time to the predetermined time when the tone ends i e when the start symbol is received the transmitted tone may be brief since additional overhead of bytes for time information and error correction are not required this may result in a desired savings in transmission time and energy consumption by contrast time synchronization packets in other communication networks may require a preamble and start symbol followed by a header and payload data however according to an exemplary embodiment and or exemplary method of the present invention the tone may be sufficient to convey the time information and therefore the exemplary embodiment and or exemplary method may be more efficient using tones instead of packets may be also desired because in certain instances the tones may be heard from a much further distance as compared to data packets for example at greater distances from the transmitter a data packet may not be discernable to a receiver as to the information contained therein whereas a tone which may barely audible at these greater distances is still detectable by the receiver hence at these greater distances where the transmission of the data packet or tone is detectable but the content of the data packet is not discernable the tone may provide an advantage since the tone need only be detected and examined for its content like a data packet an exemplary method according to the present invention may be.