40 Middlesex Turnpike, Bedford, MA 01730-1432 July 2004 TGn Questions for 802.18 Colin Lanzl Aware, Inc. 40 Middlesex Turnpike, Bedford, MA 01730-1432 +1-781-687-0578 clanzl@aware.com Colin Lanzl, Aware

March 2004 doc.: IEEE 802.11-04/xxxr0 July 2004 Colin Lanzl, Aware Is the use of MIMO legal in all the important radio regulatory domains (North America, EU, Japan, China)? Are extended channels (multiples of 20MHz 802.11a/g) legal in all the important radio regulatory domains (ATIRRD)? Are the 802.11a/g/h radio emission rules applicable in ATIRRD (Tx power; DFS/TPC; channels, channel mask,; ...)? What is the process for engaging the regulatory bodies (with some history on how that has worked in the past)? Is beamforming legal in ATIRRD? If so, how is this regulated/measured? If the regulatory domains do not have uniform rules, how should we address the problem? If TGn discovers that the Functional requirements do not meet the requirements in one of the ATIRRD, how can 802.18 help? How is output power measured: per antenna or aggregate? Will DFS/TPC become US regulatory requirements for all bands? If so, when? Will that have any effect on current 802.11a/g equipment? When will the test procedures be in place to allow certification to happen? How does TGn equipment handle radar detection and channel avoidance? Has the FCC widened the 2.4GHz ISM band or does it have plans to do so? What are the specifications across ATIRRD: will they enforce the spectral mask as well as the out-of-band emission across the band and beyond the bands? For the extended channels, what is the allowed output power and what is the PSD mask? Does 802.18 think that worldwide regulatory bodies will restrict waveforms / modulation in addition to PSD spectral mask? Does 802.18 think that worldwide regulatory bodies will restrict access methods (TDMA, OFDMA, ...)? Colin Lanzl, Aware Colin Lanzl, Aware