Hi Wang, to my knowledge, the most accredited definitions for network's lifetime are: - the time when the first node is dead - the time when there is a partition in the network (i.e. the network is disconnected)
In general, these are the most interesting values when studying for example energy conservative techniques. Some authors also give times when a certain percentage of nodes in the network is dead (i.e. 20% or 50%). I hope that helps. Regards, Michele Battelli [EMAIL PROTECTED] wrote: > Hi Wang, > I dont know any authoritative definition for the lifetime of a network. > But in my opinion is that depends on the application/scenario. Some > authors claim that it is the time till the last/first node is > alive/dead, or even half network is dead. But i guess that it is > important to register the time when the network is no longer performing > its goal, this meatric can be a % of monitored phenomenos. > > Regard, > Tiago Camilo > > > Quoting Weixing Wang <[EMAIL PROTECTED]>: > > >> Hello, >> >> I'm confused with the lifetime of sensor network. Is it the time until the >> last or the first node uses out of energy. Or, is it the time before a >> small fraction of nodes die, and how exact is the fraction. I want the >> AUTHORITATIVE definition, e.g. by IEEE. Any one can help? Thanks in >> advance. >> >> Best regards, >> Weixing Wang >> >> >> >> >> >> >> > > > > ---------------------------------------------------------------- > This message was sent using IMP, the Internet Messaging Program. > > >
