1. Channel Classification for 802.19.1 Logical Entities
May 2010
Channel Classification for Logical Entities
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Hyunduk Kang et al, ETRI

2. Contents Introduction Proposed Channel Classification
May 2010
Contents
Introduction
Proposed Channel Classification
Definitions of Channel Classification
Hierarchy of TV Channels
Venn diagram of TV Channels
Logical Entities with Channel Sets
Hyunduk Kang et al, ETRI

3. May 2010
Introduction (1/3)
system architecture consists of three logical entities and six logical interfaces
system architecture
Hyunduk Kang et al, ETRI

4. May 2010
Introduction (2/3)
In order to start theirs operation, TVBDs or networks should select a proper operating channel among allowed channels
Allowed channels that may be used by TVBDs or networks at a given location will be given by TVWS database. For example, in the U.S. allowed channels are as follows;
However, status of given allowed channels will be dynamically changed based on incumbent activities, other TVBDs or networks activities, relocation of TVBDs, and so on.
Hyunduk Kang et al, ETRI
Hyunduk Kang, ETRI

5. May 2010
Introduction (3/3)
To facilitate coexistence between compliant TVBDs or networks, each logical entities should know status of TV channels at a given location such as;
Which channel is available for TVBDs or networks
Which channel is disallowed by regulation, or by the request of incumbents
Which channel should be protected due to incumbent activity
Which channel should be restricted with limitations in order to use by TVBDs or networks
Which channel is already being used by other TVBDs or networks
Etc.
Using status of TV channels at a given location, a CM shall select a proper operating channel to mitigate coexistence problems among compliant TVBDs and networks
Hyunduk Kang et al, ETRI

6. Proposed Channel Classification
May 2010
Proposed Channel Classification
Disallowed channels
Allowed channels
Available channels
Protected channels
Restricted channels
Unclassified channels
Operating channels
Coexistent channels
Hyunduk Kang et al, ETRI

7. Definitions of Channel Classification (1/3)
May 2010
Definitions of Channel Classification (1/3)
Disallowed set
A set of channels disallowed for any TVBDs or networks by regulation, or by the request of incumbents
E.g., in the U.S. TV channel 3,4, and 37 are disallowed by regulation
E.g., in the U.S. a TV channel registered at TVWS database by a licensed wireless microphone is disallowed for any TVBDs or networks
Might be provided by TVWS database and will be updated if necessary
Allowed set
A set of channels allowed for TVBDs or networks
Should be provided by TVWS database and will be updated if necessary
All TVBDs or networks should first obtain a list of the available channels before operating.
Slide 7
Hyunduk Kang et al, ETRI

8. Definitions of Channel Classification (2/3)
May 2010
Definitions of Channel Classification (2/3)
Available set
A set of free channels available for TVBDs or networks
Restricted set
A set of channels restricted to use with limitations due to regulation
Can be used by TVBDs or networks under limited conditions predefined by regulation
E.g., in the U.S. a portable/personal TVBD can use “the first adjacent channel of the incumbent activating channel” with limited transmit power (≤ 40mW EIRP) by FCC regulation
E.g., in the U.S. channel 36 and 38 need more stringent emission mask to protect incumbents in channel 37 by FCC regulation
Protected set
A set of channels occupied by incumbents to be protected
Can NOT be used by any TVBDs or networks
Unclassified set
A set of channels has not been classified as one of listed above three sets
Slide 8
Hyunduk Kang et al, ETRI

9. Definitions of Channel Classification (3/3)
May 2010
Definitions of Channel Classification (3/3)
Operating set
A set of operating channels being used by one TVBD or network
Can be selected from available set or restricted set only if there are no incumbent activities on it
If each TVBD or network has its own operating channel, spectrum etiquette with FDM (frequency division multiplexing) is achievable.
Coexistent set
A set of channels being shared by two or more TVBDs or networks
If two or more TVBDs or networks compete the same channel, spectrum etiquette with FDM is NOT achievable.
Slide 9
Hyunduk Kang et al, ETRI

10. Hierarchy of TV Channels
May 2010
Hierarchy of TV Channels
TV channels
managed by
TVWS
database
Disallowed channel(s)
Allowed channel(s)
a.k.a., TVWS channel(s)
Available
channel(s)
Restricted
channel(s)
Protected
channel(s)
Unclassified
channel(s)
managed by
Logical
entities
Operating
channel(s)
Coexistent
channel(s)
Hyunduk Kang et al, ETRI

11. Venn diagram of TV Channels
May 2010
Venn diagram of TV Channels
TV channels
Available
channel(s)
Restricted
channel(s)
Operating channel(s)
Disallowed
channel(s)
Coexistent channel(s)
Allowed
channel(s)
Protected
channel(s)
Unclassified
channel(s)
Hyunduk Kang et al, ETRI

12. Venn diagram of TV Channels (2/2)
May 2010
Venn diagram of TV Channels (2/2)
Disallowed set
A subset of a TV channel set
A complementary set of the allowed set
Allowed set
A complementary set of the disallowed set
Available/Restricted/Protected/Unclassified set
A subset of the allowed set
Two different channel sets are a complementary set each other
Operating set
A subset of the available set or the restricted set or union of both
A subset of a complementary set of the coexistent set
Coexistent set
A subset of the operating set
Hyunduk Kang et al, ETRI

13. 802.19.1 Logical Entities with Channel Sets
May 2010
Logical Entities with Channel Sets
Coexistence Discovery and Information Server
Get list of disallowed set and allowed set from TVWS database
Manage channel sets among multiple CMs at given location to facilitate coexistence among them
Coexistence Manager
Get list of disallowed set and allowed set from TVWS database or channel sets from CDIS
Manage channel sets among multiple CEs belongs to CM to facilitate coexistence among them
Decide a proper operating channel to facilitate coexistence among TVBDs or networks
Coexistence Enabler
Request and obtain information from TVBDs or networks to update channel sets
Hyunduk Kang et al, ETRI