1. 802.19.1 Procedures Date: 2010-11-10 Authors: November 2010
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Hyunduk Kang, et al, ETRI

2. Contents Introduction CM operating procedures CE operating procedures
November 2010
Contents
Introduction
CM operating procedures
CE operating procedures
CDIS operating procedures
Hyunduk Kang, et al, ETRI

3. Introduction (1/2) Modified 802.19.1 system architecture November 2010
Hyunduk Kang, et al, ETRI

4. November 2010
Introduction (2/2)
After the interface setup has been made between two entities, each entity starts its operating stage.
Each entity at operating stage is described by a number of designated procedures and events that triggers them.
There are mainly three entities needed to be considered:
Coexistence manger (CM)
Coexistence enabler (CE)
Coexistence discovery and information server (CDIS)
Hyunduk Kang, et al, ETRI

5. CM Operating Procedures
November 2010
CM Operating Procedures
10 procedures:
CM_Channel_Classification
CM_Channel_Allocation
CM_TVWS_Channel_Update
CM_Registered_CE_Discovery
CM_Registered_CE_Discovery_Update
CM_Neighbor_CM_Discovery
CM_Neighbor_CM_Discovery_Update
CM_Initiate_Registered_CE_Channel_Move
CM_Initiate_Channel_Reallocation
CM_Channel_Identification
CM_Inform_Event
Hyunduk Kang, et al, ETRI

6. CM_Channel_Classification (1/3)
November 2010
CM_Channel_Classification (1/3)
Triggered if flag ‘Initiate_Channel_Classification’ is set to be 1.
This flag is set to be 1 if the CM has been initialized after power on or TVWS channels from TVWS DB have been updated.
The CM executes the procedure CM_Registered_CE_ Discovery in order to find out context information of registered CEs belong to the CM.
Hyunduk Kang, et al, ETRI

7. CM_Channel_Classification (2/3)
November 2010
CM_Channel_Classification (2/3)
After getting context information from registered CEs, the CM accesses TVWS DB to get the list of allowed channels such as the available channel and the restricted channel that can be used by TVBD networks or devices.
To do that, the CM might send FCC identifier of each TVBD as required by FCC regulation.
In case, TVWS DB is not available within a certain time limit, the CM requests each registered CE to send disconnection request to the CM.
Hyunduk Kang, et al, ETRI

8. CM_Channel_Classification (3/3)
November 2010
CM_Channel_Classification (3/3)
After getting available or restricted channel lists from TVWS DB, the CM executes the procedure CM_ Neighbor_CM_Discovery to get context information of neighbor CMs from the CDIS.
Once neighbor CM discovery is accomplished, the CM executes the procedure CM_Channel_Identification
Finally the CM sets flag ‘Initiate_Channel_Allocation’ to be 1, in order to initiate the procedure CM_Channel _Allocation.
Hyunduk Kang, et al, ETRI

9. CM_Channel_Identification (1/2)
November 2010
CM_Channel_Identification (1/2)
The CM shall identify the available channel, the restricted channel, the operating channel already taken by the registered CE of the neighbor CM among allowed channels from TVWS DB.
Hyunduk Kang, et al, ETRI

10. CM_Channel_Identification (2/2)
November 2010
CM_Channel_Identification (2/2)
Hyunduk Kang, et al, ETRI

11. CM_Channel_Allocation (1/3)
November 2010
CM_Channel_Allocation (1/3)
Triggered if flag ‘Initiate_Channel_Allocation’ is set to be 1. This flag is set to be 1 if the following occurs:
If the CM has done the procedure CM_Channel_Classification
If the neighbor CM discovery has been updated
If the registered CE discovery has been updated
If the registered CE requests channel move and there are no available channels or restricted channels to allocate
The CM checks if Timer TRefresh_TVWS_DB is expired.
If it is expired, the CM executes the procedure CM_TVWS_ Channel_Update.
If not, the CM enters the channel allocation process and checks current channel classification.
Hyunduk Kang, et al, ETRI

12. CM_Channel_Allocation (2/3)
November 2010
CM_Channel_Allocation (2/3)
Based on current channel classification, the CM shall decide if individual channel assignment is possible for all registered CEs considering its neighbor CM.
If possible, i.e., in individual channel assignment mode, the CM shall allocate an exclusive operating channel to each registered CE
If not possible, i.e., in co-channel sharing mode, the CM shall apply a proper operating channel selection algorithm and/or a co-channel sharing mechanism to each registered CE.
Negotiation might be needed if a negotiation with its neighbor CM is needed.
Hyunduk Kang, et al, ETRI

13. CM_Channel_Allocation (3/3)
November 2010
CM_Channel_Allocation (3/3)
The CM sends reconfiguration request to registered CEs.
If a registered CE does not accept the CM’s reconfiguration request, the CM discards that registered CEs.
The CM updates channel classification again to reflect channel allocation, and sets flag ‘Initiate_Registered_ CM_Channel_Classification_Discovery’ to be 1.
Finally the CM sends context information to CDIS.
Hyunduk Kang, et al, ETRI

14. CM_TVWS_Channel_Update
November 2010
CM_TVWS_Channel_Update
The CM periodically executes during the CM operation.
If TVWS DB is updated, the CM executes the procedure CM_Initiate_Channel_Reallocation notifying channel shutdown to all registered CEs, and goes back to the procedure CM_Channel_Classification.
In case, TVWS DB is not available within a certain time limit, the CM notifies shutdown of all operating channels to all registered CEs, and requests each registered CE to send disconnection request to the CM.
Hyunduk Kang, et al, ETRI

15. CM_Registered_CE_Discovery_Update
November 2010
CM_Registered_CE_Discovery_Update
Triggered if registered CE list of the CM has been changed.
The CM executes the procedure CM_Registered_CE_ Discovery and the procedure CM_Channel_Allocation one by one.
Hyunduk Kang, et al, ETRI

16. CM_Neighbor_CM_Discovery_Update
November 2010
CM_Neighbor_CM_Discovery_Update
Triggered if neighbor CM list has been changed.
The CM executes the procedure CM_Neighbor_CM_ Discovery and the procedure CM_Channel_Allocation by turns.
Hyunduk Kang, et al, ETRI

17. CM_Initiate_Registered_CE_Channel_ Move (1/2)
November 2010
CM_Initiate_Registered_CE_Channel_ Move (1/2)
Triggered if a registered CE of the CM requests channel move due to failure of required quality of service (QoS) with allocated operating channel from the CM.
If there are available channels or restricted channels, the CM shall allocate a new operating channel to the CE requesting channel move.
The CM shall update channel classification, and send context information to the CDIS.
If there are no available channels or restricted channels to allocate, the CM shall execute the procedure CM_ Channel_Allocation.
Hyunduk Kang, et al, ETRI

18. CM_Initiate_Registered_CE_Channel_ Move (1/2)
November 2010
CM_Initiate_Registered_CE_Channel_ Move (1/2)
Hyunduk Kang, et al, ETRI

19. November 2010
CM_Inform_Event
Triggered if the CM received an event request from the CDIS or its neighbor CMs.
Hyunduk Kang, et al, ETRI

20. CE Operating Procedures (1/3)
November 2010
CE Operating Procedures (1/3)
4 procedures:
CE_Inform_Context_Information
CE_Inform_Event
CE_TVBD_Reconfiguration
CE_Request_Channel_Move
Hyunduk Kang, et al, ETRI

21. CE Operating Procedures (2/3)
November 2010
CE Operating Procedures (2/3)
The procedure CE_TVBD_Reconfiguration
Triggered if the CE receives reconfiguration request from the CM.
The CE shall check the validity of allocated operating channel from the CM by asking TVWS DB.
The CE shall reconfigure TVBD as the CM requested.
The procedure CE_Inform_Context_Information is triggered if the CE receives context information request from the CM.
Hyunduk Kang, et al, ETRI

22. CE Operating Procedures (3/3)
November 2010
CE Operating Procedures (3/3)
The procedure CE_Request_Channel_Move
Triggered if the CE detects failure of required quality of service (QoS) with allocated operating channel from the CM.
The CE shall request a new operating channel to the CM.
The procedure CE_Inform_Event is triggered if the CE received an event request from the CM.
Hyunduk Kang, et al, ETRI

23. CDIS Operating Procedures (1/3)
November 2010
CDIS Operating Procedures (1/3)
4 procedures:
CDIS_Registered_CM_Channel_Classification_Discovery
CDIS_TVWS_Channel_Update
CDIS_Neighbor_CM_Discovery
CDIS_Inform_Event
Hyunduk Kang, et al, ETRI

24. CDIS Operating Procedures (2/3)
November 2010
CDIS Operating Procedures (2/3)
The procedure CDIS_TVWS_Channel_Update is periodically executed during the CDIS operation.
The procedure CDIS_Neighbor_CM_Discovery
Triggered if flag ‘Initiate_Neighbor_CM_Discovery’ is set to be 1. This flag is set to be 1 if the registered CM list or context information of the registered CM has been updated.
The CDIS shall find neighbor CMs and its corresponding CEs that might cause harmful co-channel interference between them
Hyunduk Kang, et al, ETRI

25. CDIS Operating Procedures (3/3)
November 2010
CDIS Operating Procedures (3/3)
The procedure CDIS_Registered_CM_Channel_ Classification_Discovery
Triggered if flag ‘Initiate_CDIS_Registered_CM_Channel_ Classification_Discovery’ is set to be 1. This flag is set to be 1 if channel classification of the registered CM has been updated.
The CDIS shall gather information on channel classification of each registered CM.
The procedure CDIS_Inform_Event is triggered if the CDIS received an event request from the registered CM.
Hyunduk Kang, et al, ETRI