[Tinyos-devel] Re: [Tinyos Core WG] time sync interfaces

[Janos Sallai]

> In what cases is a few-millisecond time synchronization useful? An
> application that does occasional temperature and light sensing
> probably can just use the time of arrival at the base station as time.
> Phil, is this the class of application you were thinking of when you
> said 90% cases?

In 90% of the cases, a sensor network is homogeneous: all devices are
identical and programmed with the same program image. That is, the issue
of interoperability of different timestamping implementations simply does
not exist.

Prescribing a common "network time precision" would put extra burden on
the implementer of a radio stack, and could require "extensive"
computation in time-critical code.

Janos 
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