June 2007
Kyutae Lim, GEDC, Georgia Tech
Slide 1Submission
doc.:IEEE 802.22-07/0257r6
MAC-SM-SSF Interface
IEEE P802.22 Wireless RANs Date: 2007-06-25
Authors:
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Name Company Address Phone email
Kyutae Lim GEDC Georgia Tech
85 5th Street NW, Atlanta, GA
+1-404-385-6008
Dave Cavalcanti Philips Research North America
345 Scarborough Road Briarcliff Manor, NY
+1-914)-945 6083
Gwang-Zeen Ko ETRI Korea +82-42-860-4862
Chang-Joo Kim ETRI Korea +82-42-860-1230
Wengdong Hu STMicroelectronics
1060 East Brokaw Road, San Jose, CA 95131
1-408-467-8410 [email protected]
Kihong Kim Samsung Electro-Mechanics
Korea +82-31-210-5332
June 2007
Kyutae Lim, GEDC, Georgia Tech
Slide 2Submission
doc.:IEEE 802.22-07/0257r6
Abstract
The presentation describes the overall system architecture and interfaces between the Spectrum Manager, MAC, Spectrum Sensing Function, Database and Geo-location Database based on IEEE P802.22 working draft.
It is updated based on the conference call of June 18, 2007.–In slide 3 : Incumbent database and Regulation and operation are now connected to BS via upper layer
–In slide 3 : Bring Geo-location into the BS entity as ハWinston requested.
–Added slide 9 : Defining when sensing occurred.
June 2007
Kyutae Lim, GEDC, Georgia Tech
Slide 3Submission
doc.:IEEE 802.22-07/0257r6
Overall System Architecture (Sensing Info Flow Only)
Incumbent Database
SpectrumManager
SSF
…
Regulation and Operational
considerations
Higher Layers (IP, ATM, 1394 etc)
PHY
ConvergenceSub-layer/Bridge
MAC Common part
PHY
MAC
SM SSF
CPE#1
PHY
MAC
SM SSF
PHY
MAC
SM SSF
CPE#2 CPE#N
Geo-Location
(?)
June 2007
Kyutae Lim, GEDC, Georgia Tech
Slide 4Submission
doc.:IEEE 802.22-07/0257r6
Sensing Information Flaw
Geo-locationIncumbent Database
PHY
Regulation and Operational
considerations
CPE CH Set #N
Active Set
Occupied Set
Candidate/Backup Set
Null Set
Disallowed set
Spectrum Manager
CPE CH Set #1
Active Set
Occupied Set
Candidate/Backup Set
Null Set
Disallowed set
BS CH Set #1
Active Set
Occupied Set
Candidate/Backup Set
Null Set
Disallowed set
...PHY
SSF
Base-station CPE #N
SM (CPE)
CPE CH Set #N
Active Set
Occupied Set
Candidate/Backup Set
Null Set
Disallowed set
MAC
MAC
SSF
June 2007
Kyutae Lim, GEDC, Georgia Tech
Slide 5Submission
doc.:IEEE 802.22-07/0257r6
MAC - SM Interface
** CH parameters includes Signal power, SNR, Noise power, Noise variance
Base station
PHY
MAC
SMSSF
CPE#
PHY
MAC
SM SSF
Sensing report @CH#
WRAN
Incumbent #1
...
CH parameters**
Incumbent #N
Vacant
CH1 info
...
CH-N info
CH Set DB @ CPE#
Request
CH# for sensing
Request
CH# for sensing
CPE # for DB
Sensing report @CH#
WRAN
Incumbent #1
...
CH parameters**
Incumbent #N
Vacant
Request
CH# for sensing
June 2007
Kyutae Lim, GEDC, Georgia Tech
Slide 6Submission
doc.:IEEE 802.22-07/0257r6
(Candidate) Functions of SMSM in BS Management
functionalities in CPEChannel Set Information
- Maintain/Updated Channel sets based on information collected from its sensing function, its associated CPEs, Incumbent database and Geolocation database.
-Inform CPEs of changes in Channel sets
-Maintain a local copy of channel set info
-Update channel set information as directed by the BS and as a result of in-band/out-of-band sensing
Control Spectrum sensing related message
- Send commands to its SSF and to CPEs’ SSFs (Sensing Request Command)
-Receive sensing reports from the MAC (local reports and reports from CPEs)
-Control the scheduling of the quiet periods
-Request SSF in the CPE to sense out-of-band channels, when not explicitly requested by the BS.
Channel Management
- Channel management commands
- Controls the selection of operating and backup channels based on information collected from its sensing function, from its associated CPEs, and from Incumbent and Geolocation databases.
Rest of Function Cap of TPC
DFS management
Inter network communication
Adaptive modulation
Spectrum sharing
Adaptive beamforming
June 2007
Kyutae Lim, GEDC, Georgia Tech
Slide 7Submission
doc.:IEEE 802.22-07/0257r6
MAC-SM Interface (BS)
• Generic Management Primitives– GET/SET/RESET primitives are defined in the MLME and PLME with the SM to
enable:• Initialization, access, and reset of MAC/PHY attributes (i.e. PHY/MAC MIB attributes)
• MLME SAP Interface with the SM – Spectrum Sensing Primitives:
• MLME-SpectrumSensing.Request (…)• MLME-SpectrumSensing.Confirm (…)
– Channel Management• MLME-ChannelSwitch.Request (…)• MLME-ChannelSwitch.Confirm (…)• MLME-ChannelTerminate.Request (…)• MLME-ChannelTerminate.Confirm (…)• MLME-ChannelQuiet.Request (…)• MLME-ChannelQuiet.Confirm(…)
June 2007
Kyutae Lim, GEDC, Georgia Tech
Slide 8Submission
doc.:IEEE 802.22-07/0257r6
MAC-SM Interface (Cont.)
– Channel Sets Information:• MLME-CHOccupancy-Update.Request (…)
– Result: BS sends updated channel set information to CPE(s)
• MLME-CHOccupancy-Update.Confirm (…)
• ???
June 2007
Kyutae Lim, GEDC, Georgia Tech
Slide 9Submission
doc.:IEEE 802.22-07/0257r6
When does sensing?
Start-upControlled by Self
To establish initial link
In-band (Quiet-time)Controlled by SM BSTo detect incumbent
Out-of-bandControlled by BS
For distribute sensing
Out-of-bandControlled by BS (or Self)
For distribute sensing
Out-of-bandControlled by Self
To update candidate CH
June 2007
Kyutae Lim, GEDC, Georgia Tech
Slide 10Submission
doc.:IEEE 802.22-07/0257r6
(Candidate) SM Interfaces
• With the MAC
• With the SSF
• With the PHY
• With the Spectrum Policy / Geolocation / Spectrum Database
• With the Higher-layer (Bridges, routers, hosts, etc.)
June 2007
Kyutae Lim, GEDC, Georgia Tech
Slide 11Submission
doc.:IEEE 802.22-07/0257r6