1. Submission doc.:IEEE 802.22-07/0257r6 June 2007 Kyutae Lim, GEDC, Georgia Tech Slide 1 MAC-SM-SSF Interface IEEE P802.22 Wireless RANs Date: 2007-06-25 Authors: 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 802.22. 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 Chairhttp://standards.ieee.org/guides/bylaws/sb-bylaws.pdf Carl R. StevensonCarl R. Stevenson 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 802.22 Working Group. If you have questions, contact the IEEE Patent Committee Administrator at patcom@iee.org.patcom@iee.org >

2. Submission doc.:IEEE 802.22-07/0257r6 June 2007 Kyutae Lim, GEDC, Georgia Tech Slide 2 Abstract The presentation describes the overall system architecture and interfaces between the Spectrum Manager, MAC, Spectrum Sensing Function, Database and Geo-location Database based on IEEE P802.22 working draft. It is updated based on the conference call of June 18, 2007. –In slide 3 : Incumbent database and Regulation and operation are now connected to BS via upper layer –In slide 3 : Bring Geo-location into the BS entity as ﾊ Winston requested. –Added slide 9 : Defining when sensing occurred.

3. Submission doc.:IEEE 802.22-07/0257r6 June 2007 Kyutae Lim, GEDC, Georgia Tech Slide 3 Overall System Architecture (Sensing Info Flow Only) Incumbent Database Spectrum Manager SSF … Regulation and Operational considerations Higher Layers (IP, ATM, 1394 etc) PHY Convergence Sub-layer/Bridge MAC Common part PHY MAC SM SSF CPE#1 PHY MAC SM SSF PHY MAC SM SSF CPE#2CPE#N Geo- Location (?)

4. Submission doc.:IEEE 802.22-07/0257r6 June 2007 Kyutae Lim, GEDC, Georgia Tech Slide 4 Sensing Information Flaw Geo-location Incumbent Database PHY Regulation and Operational considerations CPE CH Set #N Active Set Occupied Set Candidate/ Backup Set Null Set Disallowed set Spectrum Manager CPE CH Set #1 Active Set Occupied Set Candidate/ Backup Set Null Set Disallowed set BS CH Set #1 Active Set Occupied Set Candidate/ Backup Set Null Set Disallowed set... PHY SSF Base-station CPE #N SM (CPE) CPE CH Set #N Active Set Occupied Set Candidate/ Backup Set Null Set Disallowed set MAC SSF

5. Submission doc.:IEEE 802.22-07/0257r6 June 2007 Kyutae Lim, GEDC, Georgia Tech Slide 5 MAC - SM Interface ** CH parameters includes Signal power, SNR, Noise power, Noise variance Base station PHY MAC SM SSF CPE# PHY MAC SM SSF Sensing report @CH# WRAN Incumbent #1... CH parameters** Incumbent #N Vacant CH1 info... CH-N info CH Set DB @ CPE# Request CH# for sensing Request CH# for sensing CPE # for DB Sensing report @CH# WRAN Incumbent #1... CH parameters** Incumbent #N Vacant Request CH# for sensing

6. Submission doc.:IEEE 802.22-07/0257r6 June 2007 Kyutae Lim, GEDC, Georgia Tech Slide 6 (Candidate) Functions of SM SM in BSManagement functionalities in CPE Channel Set Information - Maintain/Updated Channel sets based on information collected from its sensing function, its associated CPEs, Incumbent database and Geolocation database. -Inform CPEs of changes in Channel sets -Maintain a local copy of channel set info -Update channel set information as directed by the BS and as a result of in- band/out-of-band sensing Control Spectrum sensing related message - Send commands to its SSF and to CPEs’ SSFs (Sensing Request Command) -Receive sensing reports from the MAC (local reports and reports from CPEs) -Control the scheduling of the quiet periods -Request SSF in the CPE to sense out-of- band channels, when not explicitly requested by the BS. Channel Management - Channel management commands - Controls the selection of operating and backup channels based on information collected from its sensing function, from its associated CPEs, and from Incumbent and Geolocation databases. Rest of FunctionCap of TPC DFS management Inter network communication Adaptive modulation Spectrum sharing Adaptive beamforming

7. Submission doc.:IEEE 802.22-07/0257r6 June 2007 Kyutae Lim, GEDC, Georgia Tech Slide 7 MAC-SM Interface (BS) Generic Management Primitives –GET/SET/RESET primitives are defined in the MLME and PLME with the SM to enable: Initialization, access, and reset of MAC/PHY attributes (i.e. PHY/MAC MIB attributes) MLME SAP Interface with the SM –Spectrum Sensing Primitives: MLME-SpectrumSensing.Request (…) MLME-SpectrumSensing.Confirm (…) –Channel Management MLME-ChannelSwitch.Request (…) MLME-ChannelSwitch.Confirm (…) MLME-ChannelTerminate.Request (…) MLME-ChannelTerminate.Confirm (…) MLME-ChannelQuiet.Request (…) MLME-ChannelQuiet.Confirm(…)

8. Submission doc.:IEEE 802.22-07/0257r6 June 2007 Kyutae Lim, GEDC, Georgia Tech Slide 8 MAC-SM Interface (Cont.) –Channel Sets Information: MLME-CHOccupancy-Update.Request (…) –Result: BS sends updated channel set information to CPE(s) MLME-CHOccupancy-Update.Confirm (…) ???

9. Submission doc.:IEEE 802.22-07/0257r6 June 2007 Kyutae Lim, GEDC, Georgia Tech Slide 9 When does sensing? Start-up Controlled by Self To establish initial link In-band (Quiet-time) Controlled by SM BS To detect incumbent Out-of-band Controlled by BS For distribute sensing Out-of-band Controlled by BS (or Self ) For distribute sensing Out-of-band Controlled by Self To update candidate CH

10. Submission doc.:IEEE 802.22-07/0257r6 June 2007 Kyutae Lim, GEDC, Georgia Tech Slide 10 (Candidate) SM Interfaces With the MAC With the SSF With the PHY With the Spectrum Policy / Geolocation / Spectrum Database With the Higher-layer (Bridges, routers, hosts, etc.)

11. Submission doc.:IEEE 802.22-07/0257r6 June 2007 Kyutae Lim, GEDC, Georgia Tech Slide 11