Extended 802.22 Network Topologies January 2006 doc.: IEEE 802.22-06/0006r0 Extended 802.22 Network Topologies Author: Abstract This contribution summarizes graphically different network topologies and use cases that can exist with the inclusion of personal/portable devices in the operation of WRAN systems in view of defining what can be considered in an extended 802.22 PAR and a new 802.22.3 PAR. Notice: This document has been prepared to assist IEEE 802.22. 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 802.11. Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and Procedures <http://standards.ieee.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 Working Group 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 Carl R. Stevenson <wk3c@wk3c.com> 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 802.11 Working Group. If you have questions, contact the IEEE Patent Committee Administrator at <patcom@ieee.org>. Gerald Chouinard, CRC Gerald Chouinard, CRC

“Regional Area Network” Multipath absorption Window (Cyclic prefix ) January 2006 doc.: IEEE 802.22-06/0006r0 IEEE Standards IEEE 802.22 RAN “Regional Area Network” 30 km 37 μsec Multipath absorption Window (Cyclic prefix ) 0.25 2.2 μsec 0.8 The IEEE 802.22 Working Group which is developing the WRAN standard is adding anotherr layer to the set of licensed-exempt wireless systems. It will be able to operate in the low-VHF (ch. 2-6), high-VHF (ch. 7-13) and UHF (ch. 14 to 51 and 69 where possible). It will use the standard TV channels, 6, 7 and 8 MHz wide. Each channel can carry some 20 Mbit/s capacity and its modulation (2000 carriers OFDMA) will be robust to long echoes (up to about 25 usec) found on these longer paths. 23 Mbit/s BW= 6,7,8 MHz 54 - 862 MHz Gerald Chouinard, CRC Gerald Chouinard, CRC

Long round-trip delays January 2006 doc.: IEEE 802.22-06/0006r0 - Cable-modem / ADSL Rural Broadband: - WiFi hot-spots in ISM bands - Medium power wireless systems 5 km - Higher power, lower frequency broadband access system 30 km 23 km 16 km MAC Long round-trip delays QPSK 16-QAM 64-QAM PHY Adaptive modulation Example of a progressive coverage of a rural town/village and its surrounding. A higher power, lower frequency broadband access system such as the 802.22 WRAN is needed to extend the coverage to some 30 km (limited by NLOS propagation). The actual limit in extent of coverage allowed by the 802.22 standard will be up to 100 km. Gerald Chouinard, CRC Gerald Chouinard, CRC

WRAN edge of coverage: up to 30 km WRAN BS 4 Watt 30 m WRAN edge of coverage: up to 30 km WRAN CPE 4 Watt 10 m outdoors Gerald Chouinard, CRC

802.22 WRAN augmented with portable devices (Extended PAR) WRAN BS 4 Watt 30 m Portable 100 mW Portable 50 mW Portable 100 mW WRAN edge of coverage: up to 30 km WRAN CPE 4 Watt 10 m outdoors Gerald Chouinard, CRC

802.22 WRAN augmented with portable devices (new PAR) Interoperability Relaying Hand-off Portable 100 mW WRAN BS 4 Watt 30 m Portable 100 mW Portable 50 mW Portable 100 mW WRAN edge of coverage: up to 30 km WRAN CPE 4 Watt 10 m outdoors Gerald Chouinard, CRC

January 2006 doc.: IEEE 802.22-06/0006r0 References IEEE P802.22™/ DRAFTv2.0 Draft Standard for Wireless Regional Area Networks Part 22: Cognitive Wireless RAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: Policies and procedures for operation in the TV Bands, April 2008 sg-whitespace-09-0007-07-0000-ecsg-adhoc-use-case-slide-deck.ppt 22-09-0159-02-0000-PAR extension for portable CPEs.doc Gerald Chouinard, CRC Gerald Chouinard, CRC