1. Coexistence Decision Making Topologies
Month Year
doc.: IEEE yy/xxxxr0
July 2010
Coexistence Decision Making Topologies
Date:
Authors:
Notice: This document has been prepared to assist IEEE 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.
Junho Jo/Jihyun Lee, LG Electronics
John Doe, Some Company

2. Month Year
doc.: IEEE yy/xxxxr0
July 2010
Abstract
In this slide set, we review the possible coexistence topologies and its according possible system architectures
We also point out some information to be considered while decision making
Junho Jo/Jihyun Lee, LG Electronics
John Doe, Some Company

3. Introduction Logical entities Possible topologies
July 2010
Introduction
Logical entities
CDIS (Coexistence Discovery and Information Server)
Collect, aggregate and provide information facilitating coexistence
CM (Coexistence Manager)
Decision making
Possible topologies
Centralized
Super(Master) CM
Distributed
Information exchange between CMs
Autonomous
Junho Jo/Jihyun Lee, LG Electronics

4. Centralized Topology CDIS CM
Month Year
doc.: IEEE yy/xxxxr0
July 2010
Centralized Topology
CDIS
Mainly for data storage, data processing, etc. CM
Super(Master) CM serves all the neighboring networks
One of the TVBD within interfering networks could be a Super(Master) CM CE CM
Decision maker
CDIS
Junho Jo/Jihyun Lee, LG Electronics
John Doe, Some Company

5. Distributed Topology CDIS CM Facilitate opening interfaces between CMs
July 2010
Distributed Topology
CDIS
Facilitate opening interfaces between CMs CM
Exchange information required for coexistence
Hierarchical and/or peer-to-peer decision making CM
Decision maker
CDIS
Interface between CMs
Interface B3[2]
Junho Jo/Jihyun Lee, LG Electronics

6. Decision Making Algorithm
July 2010
Decision Making Algorithm
System requirement R5, R6 and R7 in [2]
system
Shall analyze obtained information
Shall be capable of making coexistence decisions
Shall support different topologies
Information may include, regardless the topology,
Bandwidth of each TVWS network/device
Available channel list seen from each TVWS network/device and its according power constraint on each TVWS channel
Others such as regulatory classes, system parameters, neighborhood information analyzed in advance and so on
Junho Jo/Jihyun Lee, LG Electronics

7. Comparison July 2010 Centralized topology Distributed topology
Month Year
doc.: IEEE yy/xxxxr0
July 2010
Comparison
Centralized topology
Distributed topology
Super CM allocates independent resources to different CEs
- Prioritize and classify CMs with a certain policy
- CMs may report/send its preference on its operating channels to other CMs/CDIS
Junho Jo/Jihyun Lee, LG Electronics
John Doe, Some Company

8. References [1] IEEE 802.19.1 document PAR P802.19.1
July 2010
References
[1] IEEE document PAR P
[2] IEEE document system-design-document
[3] IEEE document July Tutorial – Possible Solutions
Junho Jo/Jihyun Lee, LG Electronics