1. doc.: IEEE 802.19-10/129r0 Submission September 2010 Junho Jo/Jihyun Lee, LG ElectronicsSlide 1 IEEE 802.19.1 System description 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. Date: 2010-09-14 Authors:

2. doc.: IEEE 802.19-10/129r0 Submission Abstract This presentation based on LG Proposal on the system description clause and reference model clause In this presentation, We suggest additional functional roles of CDIS; Coexistence Whitespace Map(CWM), Master CM Selection and its reference model September 2010 Junho Jo/Jihyun Lee, LG ElectronicsSlide 2

3. doc.: IEEE 802.19-10/129r0 Submission Hierarchical topology September 2010 Junho Jo/Jihyun Lee, LG ElectronicsSlide 3 CM CE AP Packet based network TVWS DB Core network CM CE AP Core network CM CE AP CM CE AP CDIS

4. doc.: IEEE 802.19-10/129r0 Submission September 2010 Junho Jo/Jihyun Lee, LG ElectronicsSlide 4 CDIS functionalities Centralized resource (spectrum) manager –Control CMs/operators in management related to TVWS coexistence Get information from TVWS DB –Available TVWS channel set at specific geological points Computes Coexistence contour –Especially for neighbor discovery between different systems willing to operate on TVWS Makes Coexistence Whitespace Map (CWM) –For efficient frequency resource sharing between different systems Master CM Selection –To solve coexistence problems and reduce communication overhead between CMs

5. doc.: IEEE 802.19-10/129r0 Submission September 2010 Junho Jo/Jihyun Lee, LG ElectronicsSlide 5 Coexistence Contour To discover neighbor systems, computes coexistence contour between different systems/networks willing to operate on TVWS Calculated by CDIS identifying neighbor network devices for coexistence Coexistence contour will be decided by its own each network’s TX power, other physical parameters and propagation models that might be considered simultaneously

6. doc.: IEEE 802.19-10/129r0 Submission September 2010 Junho Jo/Jihyun Lee, LG ElectronicsSlide 6 Coexistence Whitespace Map(CWM) Channel allocation by CDIS –Each representative of networks/devices is connected to CDIS making the information of each open to public CWM from CDIS to each CM’s TVWS DB CDIS CM1 CM2 CWM

7. doc.: IEEE 802.19-10/129r0 Submission Master CM Selection September 2010 Junho Jo/Jihyun Lee, LG ElectronicsSlide 7 To solve coexistence problems and reduce communication overhead between CMs Master CM serves all the neighboring networks CDIS selects master CM and notifies information to CMs

8. doc.: IEEE 802.19-10/129r0 Submission Reference model COEX_NET_SAP –Support COEX information and message with the remote 19.1 Entity. It may support interface B1, B2, B3, C, D COEX_LINK_SAP –Media dependent interface of COEX function with the lower layers of the media specific protocol stacks. It may support interface A September 2010 Junho Jo/Jihyun Lee, LG ElectronicsSlide 8

9. doc.: IEEE 802.19-10/129r0 Submission Conclusion In this presentation, we review our proposal on system description and reference model Our proposal focus on CDIS functionalities –Coexistence Whitespace Map(CWM) –Master CM Selection Design reference model September 2010 Junho Jo/Jihyun Lee, LG ElectronicsSlide 9