1. doc.: IEEE 802.19-14/0045r0 Submission July 2014 Hyunduk Kang et al, ETRISlide 1 Status of ISM Bands Notice: This document has been prepared to assist IEEE 802.19. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.19. Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and Procedures, including the statement "IEEE standards may include the known use of patent(s), including patent applications, provided the IEEE receives assurance from the patent holder or applicant with respect to patents essential for compliance with both mandatory and optional portions of the standard." Early disclosure to the TAG of patent information that might be relevant to the standard is essential to reduce the possibility for delays in the development process and increase the likelihood that the draft publication will be approved for publication. Please notify the Chair as early as possible, in written or electronic form, if patented technology (or technology under patent application) might be incorporated into a draft standard being developed within the IEEE 802.19 TAG. If you have questions, contact the IEEE Patent Committee Administrator at.http:// ieee802.org/guides/bylaws/sb-bylaws.pdfpatcom@ieee.org Date: 2014-07-16 Authors:

2. doc.: IEEE 802.19-14/0045r0 Submission 2.4GHz is already overcrowded The 2.4 GHz band only has only 3 or 4 (depending on region) non- overlapping channels There are 11 channels in North America for the 2.4 GHz band. 3 non- overlapping channels are designed long before Wi-Fi and can support other wireless technologies, such as Bluetooth (5 MHz wide) July 2014 Hyunduk Kang et al, ETRISlide 2

3. doc.: IEEE 802.19-14/0045r0 Submission 5GHz looks like good but might not enough 5 GHz band offers up to 21 separate channels (Originally 24 available channels in North America) Comparing to 2.4 GHz, 5GHz offers 7x more available channels. 802.11n and 802.11ac allow bonding of channels to get high data rates 802.11ac operate only in the 5GHz. July 2014 Hyunduk Kang et al, ETRISlide 3

4. doc.: IEEE 802.19-14/0045r0 Submission 5GHz: Expansion and new comers FCC officially proposed to add up to 195 megahertz of additional spectrum in the 5 GHz band (a 35% increase) available to unlicensed wireless devices. The Notice of Proposed Rulemaking would open up 195 MHz of additional spectrum at 5350-5470 MHz (120 MHz) and 5850-5925 (75 MHz), with the use of spectrum-sharing technologies. July 2014 Hyunduk Kang et al, ETRISlide 4 1 Channel 120, 124 and 128 (5.6-5.65 GHz) currently not permitted in the US. 2 5725MHz-5850MHz has been assigned to ISM services in China 3 Study of 5350MHz-5470MHz and 5725MHz- 5925MHz use for license exempt is being planned in EU’. 4 Feasibility studies directed by the Middle Class Relief & Job Creation Act of 2012., in 5350-5470 MHz and 5850-5925 MHz. 4 5470- 5650 MHz in Korea * These 5GHz channels typically require DFS, Dynamic Frequency Selection

5. doc.: IEEE 802.19-14/0045r0 Submission Players in ISM bands Different players using different access technologies! Coexistence problems might occur due to different access technologies July 2014 Hyunduk Kang et al, ETRISlide 5 2.4GHz5GHz 802.11b/g/n Bluetooth (802.15.1) 802.15.4, ZigBee 802.15.3 (high rate WPAN) 802.15.4a (low rate WPAN) Radio-frequency identification (RFID) New comer: 802.11ax (operations in frequency bands between 1 GHz and 6 GHz) … 802.11a/h/n/ac HIPERLAN New comer: LTE-U (TBD: e.g., 5725- 5850 MHz in USA: UNI-3) New comer: 802.11ax (operations in frequency bands between 1 GHz and 6 GHz) …

6. doc.: IEEE 802.19-14/0045r0 Submission References http://www.xirrus.com/blog/June-2012/2-4GHz-vs- 5GHz http://www.dailywireless.org/2013/02/21/fcc-moves-to- add-195-mhz-to-unlicensed-5-ghz-band/ http://www.fiercewireless.com/tech/story/fcc-charges- ahead-5-ghz-wi-fi-spectrum-plan/2013-02-20 http://www.qualcomm.com/media/documents/files/exte nding-the-benefits-of-lte-advanced-to-unlicensed- spectrum.pdf July 2014 Hyunduk Kang et al, ETRISlide 6