1. July Tutorial – Possible Solutions
June 2010
doc.: IEEE /0080r1
June 2010
July Tutorial – Possible Solutions
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.
Mika Kasslin, Nokia
Mika Kasslin, Nokia

2. June 2010
doc.: IEEE /0080r1
June 2010
Introduction
This slide set contains draft material for tutorial on possible solutions to different aspects of the architecture
The slide set is intended to be discussed in the TG1 and reviewed by the group
The slide set will be updated as needed
Mika Kasslin, Nokia
Mika Kasslin, Nokia

3. June 2010
Disclaimer
“At lectures, symposia, seminars, or educational courses, an individual presenting information on IEEE standards shall make it clear that his or her views should be considered the personal views of that individual rather than the formal position, explanation, or interpretation of the IEEE.”
IEEE-SA Standards Board Operation Manual (subclause 5.9.3)
Mika Kasslin, Nokia

4. June 2010
Possible Approach
TVBD networks and devices have mechanisms that are designed for e.g. interference management purposes
CM and CE can and should use those mechanisms for coexistence purposes
builds upon existing mechanisms in the radio systems and has control functions for that purpose
Mika Kasslin, Nokia

5. Possible Control Parameters
June 2010
doc.: IEEE /0080r1
June 2010
Possible Control Parameters
Possible reconfiguration parameters in the TVBD networks
Operating channel
Maximum transmit power
Modulation and coding rate
Bandwidth
OFDMA uplink client sub-band
Transmit scheduling
CSMA parameters
Transmit duty cycle limit
Antenna configurations
Mika Kasslin, Nokia
Mika Kasslin, Nokia

6. Possible Control Functions
June 2010
Possible Control Functions
CM’s tool box in coexistence management comprises of tools in three main domains that form the main control functions
Time domain control
Recommendations, commands related to e.g. Transmit scheduling, Transmit duty cycle limit, Modulation and coding rate
Frequency domain control
Recommendations, commands related to e.g. Operating channel, Bandwidth, OFDMA uplink client sub-band
Spatial control
Recommendations, commands related to e.g. Antenna configuration, Maximum transmit power
The system uses those tools to configure TVBD operations
Mika Kasslin, Nokia

7. Possible Decision Making Topologies
June 2010
Possible Decision Making Topologies
Not sure whether we can rely on one decision making model that can be applied in all the situations and deployments
We need to be prepared to provide means for all three topologies
Centralized
One CM serves all the neighboring networks and provides coexistence services for them
Distributed
Neighboring networks are served by different CMs
Autonomous
Information related to coexistence management is exchanged but that’s all
Mika Kasslin, Nokia

8. Possible Decision Making Topologies (cont.)
June 2010
Possible Decision Making Topologies (cont.)
All the topologies have common solution elements
Information exchange between entities is needed
We need to provide security and trust
The few main differences are
Is there information exchange between CMs?
In centralized case the CMs have less need if any to exchange information while in the other two cases it is essential for the CMs to exchange information about environment, resource usage, etc.
What is the role of CM?
Centralized and Distributed
CMs are true coexistence managers that run coexistence control functions
In a distributed case the CM may have power over a CM of a neighboring network
Distributed vs. Autonomous
In autonomous case the CM may be only facilitating communication between CEs
Mika Kasslin, Nokia

9. Guiding Questions for the System Development
June 2010
doc.: IEEE /0080r1
June 2010
Guiding Questions for the System Development
CE as defined in the SDD
Request and obtain information, required for coexistence, from TVBD network or device
What information we need from TVBD networks and devices?
How do we get the information?
Translate reconfiguration requests/commands and control information received from the CM into TVBD-specific reconfiguration requests/commands and send them to the TVBD network or device
What are the possible coexistence mechanisms?
How they are used in various TVBD networks?
How do we interface to various TVBD networks?
Mika Kasslin, Nokia
Mika Kasslin, Nokia

10. Guiding Questions for the System Development (cont.)
June 2010
doc.: IEEE /0080r1
June 2010
Guiding Questions for the System Development (cont.)
CM as defined in the SDD
Coexistence decision making
What are the control functions?
What’s needed to support different decision making topologies?
Support exchange of information required for coexistence among CMs
How to exchange coexistence information between decision making entities?
Mika Kasslin, Nokia
Mika Kasslin, Nokia