June 2010
doc.: IEEE 802.19-10/0080r2
July Tutorial – Possible Solutions
Date: 2010-06-30
Authors:
Name
Company
Address
Mika Kasslin
Nokia
Itamerenkatu 11-13, 00180
Helsinki, Finland
Phone
email
mika.kasslin@nokia.com
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.
Submission
Slide 1
Mika Kasslin, Nokia
June 2010
doc.: IEEE 802.19-10/0080r2
Introduction
• This slide set contains draft material for 802.19 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
Submission
Slide 2
Mika Kasslin, Nokia
June 2010
doc.: IEEE 802.19-10/0080r2
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)
Submission
Slide 3
Mika Kasslin, Nokia
June 2010
doc.: IEEE 802.19-10/0080r2
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
– 802.19.1 builds upon existing
mechanisms in the radio
systems and has control
functions for that purpose
Submission
Slide 4
Mika Kasslin, Nokia
June 2010
doc.: IEEE 802.19-10/0080r2
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
Submission
Slide 5
Mika Kasslin, Nokia
June 2010
doc.: IEEE 802.19-10/0080r2
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 802.19.1 system uses those tools to configure TVBD
operations
Submission
Slide 6
Mika Kasslin, Nokia
June 2010
doc.: IEEE 802.19-10/0080r2
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
Submission
Slide 7
Mika Kasslin, Nokia
June 2010
doc.: IEEE 802.19-10/0080r2
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
Submission
Slide 8
Mika Kasslin, Nokia
June 2010
doc.: IEEE 802.19-10/0080r2
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?
Submission
Slide 9
Mika Kasslin, Nokia
June 2010
doc.: IEEE 802.19-10/0080r2
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?
Submission
Slide 10
Mika Kasslin, Nokia