[Smac-users] synchronization question 2

[John Heidemann]

On Tue, 17 Aug 2004 21:57:34 +0800, =?gb2312?q?=FFffffd5=FFfffff7=20=FFffffba=FFffffe9?= wrote: 
>As we know, timer synchronization is a common issue in sensor network. I am
>not quite sure of the difference between timer synchronization and schedule
>synchronization in SMAC.
>
>Some people tell me that timer synchronization technology is mature in sensor
>networks. There are many ways to synchronize timer, such as RBS ( reference
>broadcast synchronization ). In my opinion, timer synchronization and schedule
>synchronization have much in common. They all deal with the concept of time.
>
>Can we perform timer synchronization and schedule synchronization at the same
>time? It seems we can save energy in this way. So why should we perform them
>separately?

Yes, in principle you could integrate those services, although S-MAC
does not currently export the relevant APIs.  It also doesn't do the
statistical kinds of processing to get RBS-level time synchronization.

   -John Heidemann