[Smac-users] smac and 802.11 DCF
weiye at ISI.EDU
Wed Aug 18 12:51:48 PDT 2004
S-MAC in TinyOS is NOT compatible with an 802.11 access point, because
1) Motes and 802.11 hardware have completely different radios that don't
talk to each other -- you can easily find out details.
2) S-MAC's contention mechanism is similar to 802.11, but it doesn't
mean the implementation is compatible with 802.11. All the parameters
are chosen for Motes, not for the high-speed 802.11 radio.
3) An 802.11 access point runs in PCF (infrastructure mode), which is
even not considered by S-MAC. S-MAC only borrows basic DCF contention
mechanism from 802.11 with some changes, such as the fixed contention
window, rather than the binary exponential backoff.
On Tue, 2004-08-17 at 22:59, ramakris at nmsu.edu wrote:
> Hello All,
> Is a heterogenous network with sensor nodes running on SMAC and Access Points
> that run 802.11b compatible?
> Smac-users mailing list
> Smac-users at mailman.isi.edu
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