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[STDS-802-11-TGM] Do STAs inherit or aggregate PHYs?



--- This message came from the IEEE 802.11 Task Group M Technical Reflector ---

Hello Mark,

You asked me to explain why it's not clear to me whether the ERP
includes the DSSS PHYs' functionality or adds to them (and ditto the
HT PHY and the HR/DSSS PHY w.r.t. their predecessors).

I think the problem is wording like:

- "The ERP builds on [DSSS/CCK]" in 19.1.  "builds on" to me suggests
to me that the foundations are owned by someone else -- think of it
as freehold v. leasehold!

- "[HR/DSSS] builds on [DSSS]" in 17.1 (ditto)

- "In addition to [Clause 20], an HT STA shall be capable of
transmitting and receiving frames that are compliant with [Clause 18
and/or 17 and 19]" in 20.1.  Note the HT *STA* is capable, but is
this done by the HT *PHY* or by having multiple PHYs?

Mark

-- 
Mark RISON, Systems Architect, Wi-Fi    English/Esperanto/Français
Samsung Cambridge Solution Centre       Tel: +44 1223  434600
Innovation Park, Cambridge CB4 0ZT      Fax: +44 1223  TBCTBC
ROYAUME UNI                             WWW: http://www.samsung.com/uk

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