have concluded that co-existence with legacy equipment over the same area is not feasible, so traditional mobile licensing approaches are not practical. Yet academic studies have shown that at any give time, even in dense urban environment, there is ample unused spectrum across the candidate bands. The problem is that usage by the primary services in these bands may change over time (as is the case with some radar systems) or vary by sub-channel based on location (as is the case in the TV bands "white spaces") 802.11y, along with the continued advances in multi-band radio technology, may provide a solution to this problem by granting channel access dynamically to users based on primary user avoidance techniques, location and time. It is of note that the US has not been able to adopt a single position on the suitability of the 3650–3700 band for IMT-advanced, and that neither of the proposed positions seem to recognize the FCC's rules, or the standardization work that has been done to date. Applications Back haul for Municipal Wi-Fi networks Industrial automation and controls Campus and enterprise networking Last Mile Wireless Broadband Access Fixed Point to point links Fixed point to mobile links Public safety and security networks Wireless community networks or Wireless User Groups Regulatory & 802.11y time-line In 1995, NTIA (as per an OMB report) suggests the "transfer" of the 3650 MHz to 3700 MHz frequency band to "mixed use" status Dec 1998: FCC's "3650 Allocation" press release announces this "primary" to "mixed use" transition, Dec 17 1998 (Kennard's FCC.. see FCC 98-337) Jan 1999: The spectrum from 3650 to 3700 is given "mixed-use status" and becomes available for non-federal use Apr 2004: Original NPRM dated 04/23/2004 (FCC-04-100) from Powell's FCC.. Titled "Unlicensed Operation in the Band 3650–3700 MHz et al.". This is the proposed rules to maximize the efficient use of the 3650–3700 band and foster the introduction of new and advanced services Mar 2005: FCC releases R&O (from EOT) dated 03/16/2005, (FCC-05-56) which describes in detail the use of the 3650 band and is titled "Wireless Operations in the 3650–3700 MHz Band; Rules for Wireless Broadband Services in the 3650–3700 MHz Band" Mar 2005: 802.11's WNG requests that a CBP study group be formed (CBP-SG) to examine the opportunities afforded by FCC's 3650 MHz Report and Order and Memorandum Opinion and Order (FCC 05-56). Nov 2005: The PAR and Five Criteria