802.11g - Max speed in ad-hoc mode ?

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According to a friend of mine, the fastest speed that can be attained using
802.11g equipment
in Ad-hoc mode (Peer to peer) is 11Mbps.

I understand, even though `g` equipment has a theoretical max of 54 Mbps,
the 802.11 standard
only ever required Ad-hoc connection to be max 11 Mbps.

Can anyone confirm if this is fact ?

Andy M Moore

Re: 802.11g - Max speed in ad-hoc mode ?

tubaman@tiscali.co.uk wrote:
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Depends.. If you do ad-hoc between two g cards, it does the max speed for
g.. If you go between b and g, it will only set itself for the lowest common
denominator speed (in this case b at 11). I used to have one set up as one b
one g and it ran at 11, changed to two g's, and now it's about 54.

Re: 802.11g - Max speed in ad-hoc mode ?

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Nope, but I can see where your friend is coming from.  The 802.11g
specification does not include any requirement to support Ad-Hoc mode
at 802.11g speeds.  A company could supply a radio that only does
11Mbits/sec in ad-hoc mode and still be 802.11g compliant.  I just
setup several WPC54G and WMP54G PCI cards in an ad-hoc (gaming)
network.  Works at greater than 11Mbits/sec but I didn't bother to
check how much faster.

One catch is that the WPC54GS "speed boost" technology does NOT work
in Ad-Hoc mode.  That's why we bought the cheaper cards.

There's no guarantee that all manufacturers will work at 802.11g
speeds in ad-hoc.  For example, D-Link doesn't officially support it.

I guess you're just going to have to disclose what equipment you have
and deal with the issue individually by manufacturer and product.

Jeff Liebermann    jeffl@comix.santa-cruz.ca.us
150 Felker St #D   http://www.LearnByDestroying.com">http://www.LearnByDestroying.com
Santa Cruz CA 95060    AE6KS  831-336-2558

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