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Carl, I
guess I am a little confused about your concern. 802.16h is going to
develop coexistence mechanisms to enhance coexistence with other wireless
systems, be it primary or secondary users of the band. That seems like a
good thing to me (course I am the 802.19 chair). I guess the title could be
more accurate if they want to make sure they don’t interfere with primary
users of the band. I sure hope they don’t plan to interfere with the
primary users; that is typically frowned upon. This
new PAR is not for the development of a new MAC and PHY so I can’t see
how it conflicts with 802.22. Clearly, 802.22 is also intended to coexist
with primary users in the band but it does not seem like we should prevent
802.16 from being a good citizen also. Regards, Steve From: owner-stds-802-sec@listserv.ieee.org
[mailto:owner-stds-802-sec@listserv.ieee.org] On
Behalf Of Carl R. Stevenson Roger (and EC members), While 802.22 believes that coexistence is a good thing (in
fact, as you know, the scope of our PAR requires coexistence with the primary
TV broadcast service and other licensed users in spectrum allocated to the TV
broadcast service), 802.22 does have some comments and a request for
clarification/modification of the .16h PAR. While the title mentions only unlicensed coexistence, and it
was my understanding that the scope was to be limited to unlicensed vs.
unlicensed coexistence, the PAR (attached) indicates in its scope: 13. Scope of Proposed
Project: This amendment specifies improved mechanisms, as policies and
medium access control enhancements, to enable coexistence among license-exempt systems based on IEEE Standard
802.16 and to facilitate the
coexistence of such systems with primary users. It is unclear to us what primary users in what band(s) are
being referred to in the scope. We are concerned that there is an ambiguity in the scope
that would potentially create a situation where 802.16 might assert that the
scope of this PAR enables it to develop systems designed to operate on an
unlicensed basis in the TV bands, which is clearly the scope of the 802.22
PAR and would, in our view, create a situation that would run afoul of
"distinct identity" and the principle of not duplicating work. One .16 member indicated to me that the reference to
"primary users" was intended to refer to radars and other primary users
in the 5 GHz unlicensed bands ... if this is the intent, clarification in the
scope to that effect would mitigate our concerns. Additionally, section 16 (16. Are there other documents or projects with a similar
scope?) is answered "No" and we believe that a mention of
the scope of the 802.22 PAR and a statement that the 802.16h PAR would not
conflict with our scope would be appropriate. Regards, Carl R. Stevenson Interim Chair, IEEE802.22 WG Chair, IEEE 802.18 RR-TAG |