Media Independent Coexistence for Devices in TV White Spaces June 2009 Media Independent Coexistence for Devices in TV White Spaces Date: 2009-06-16 Authors: Name Company Address Phone E-mail Haiguang Wang Hisilicon, Huawei KuiKe Building, No.9 Xinxi Rd. Shang-Di, Hai-Dian District, Beijing P.R.China +86 10 82336600 wanghaiguang@huawei.com Shulan Feng fengsl@huawei.com Jinnan Liu liujinnan@huawei.com 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 <http:// ieee802.org/guides/bylaws/sb-bylaws.pdf>, 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 <shellhammer@ieee.org> 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 <patcom@ieee.org>. Haiguang Wang, Shulan Feng, Jinnan Liu Apurva N Mody (BAE Systems), Ranga Reddy (US Army)

June 2009 Abstract This contribution propose a to use Media Independent Coexistence mechanism to solve the coexistence of the heterogeneous devices in TV White Spaces. We also propose to consider the possibility of further dividing the 6MHz TV Channels into more sub-channels. Heterogeneous devices can be put in different sub-channels. This can avoid the interference among heterogeneous devices in TV White Space efficiently. It is suitable for the coexistence of fixed and portable devices. Haiguang Wang, Shulan Feng, Jinnan Liu Apurva N Mody (BAE Systems), Ranga Reddy (US Army)

Possible Networks/Devices in TV White Space June 2009 Possible Networks/Devices in TV White Space WRAN 4W with database access 802.22/802.16/non-802 Cellular 100mW to 4W with database access 802.16/non-802 Wi-Fi/Femto cell equipment 100mW or 40mW with database access 802.11/non-802 PAN/BAN 50mW with spectrum sensing only capability. 802.15/non-802 Wireless Microphone May use white space Slide 3 Haiguang Wang, Shulan Feng, Jinnan Liu

A generic co-existence scenarios for TV White Space Networks/Devices June 2009 A generic co-existence scenarios for TV White Space Networks/Devices Slide 4 Haiguang Wang, Shulan Feng, Jinnan Liu

June 2009 Observations The coexistence issue is quite complex in the TV White Spaces as so many devices may co-located in the same places. Proposed mechanism should at least be able to solve the generic coexistence scenario specified in previous slides. An extreme case is that only one spare TV channel is available. Slide 5 Haiguang Wang, Shulan Feng, Jinnan Liu

Classifications of the Coexistence Issues Coexistence among fixed and portable devices. Fixed and portable type II devices can access the database via Internet They can also provide geo-location information. Portable type I devices are under the control of portable type II/fixed devices. Coexistence among devices only with spectrum sensing capability. Coexistence among fixed, portable and spectrum sensing only devices. Slide 6 Haiguang Wang, Shulan Feng, Jinnan Liu

Classify the Possible Coexistence Mechanisms Time Division Multiplexing (TDM) 802.16h: coexist of 802.16 and 802.11 Spectrum may not be full utilized as different standard has different spectrum policy. 802.16: minimum bandwidth 1.25 MHz 802.11: minimum bandwidth 5 MHz Frequency Division Multiplexing (FDM) A possible direction. Should we consider further divide the 6 MHz channels into narrow bands such as 1MHz or 1.25 MHz? Code Division Multiplexing (CDM) Seems not a applicable as significant changes are required at physical layer. Slide 7 Haiguang Wang, Shulan Feng, Jinnan Liu

Media Independent Coexistence (MIC) Proposed by in March Manages the spectrum via higher layer transport protocols. Suitable for the coexistence of fixed and portable devices. Consider the possibility of adding in a spectrum manager and helping the spectrum allocation. Accept spectrum request from TVBDs. Allocate spectrums according to the request and information from database. The information can be geo-location, interference range of devices etc. Consider to further divide a TV channel into more sub-channels Devices belong to the same standard can use the same sub-channel. Devices belong to different standard use the different sub-channels. No interference among heterogeneous devices Slide 8 Haiguang Wang, Shulan Feng, Jinnan Liu

Month Year doc.: IEEE 802.22-yy/xxxxr0 June 2009 Conclusions In this proposal, we propose to use Media Independent Coexistence and Frequency Division Multiplexing mechanism to solve the coexistence issue in the TV White Spaces. The advantages of this method is the interference among heterogeneous devices can be fully avoided. Haiguang Wang, Shulan Feng, Jinnan Liu John Doe, Some Company

Month Year doc.: IEEE 802.22-yy/xxxxr0 June 2009 References [1] Richard Paine, Mark Cummings, Alex Reznik, “White Space Coexistence Use Cases”, https://mentor.ieee.org/802.19/dcn/09/19-09-0026-01-tvws-whitespace-coexistence-use-cases.doc, June 6, 2009. [2] Juan Carlos Zunija, Joseph Kwak, “802.21 Media Independent Coexistence”, https://mentor.ieee.org/802-sg-whitespace/dcn/09/sg-whitespace-09-0032-04-0000-802-21-media-independent-coexistence.ppt, March 12, 2009 Haiguang Wang, Shulan Feng, Jinnan Liu John Doe, Some Company