1. Annex on TG1 detection for 802.22 draft
April 2008
doc.: IEEE /xxxxr0
April 2008
Annex on TG1 detection for draft
IEEE P Wireless RANs 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.
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Carl R. Stevenson as early as possible, in written or electronic form, if patented technology (or technology under patent application) might be incorporated into a draft standard being developed within the IEEE Working Group. If you have questions, contact the IEEE Patent Committee Administrator at
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2. Outline Background information (IEEE 802.22.1)
April 2008
doc.: IEEE /xxxxr0
April 2008
Outline
Background information (IEEE )
Receiver Reference Diagram
Synch Burst Detection
Scheduling Long-Quiet Period
Decision Flow Chart
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3. 802.22.1: Parameters Chip period: 13. µs PN sequence: 104.1 µs
April 2008
: Parameters
Chip period: 13. µs
PN sequence: µs
Symbol period: µs
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4. 802.22.1: Superframe Logical Format
April 2008
: Superframe Logical Format
Chip period: 13 µs
Symbol period: µs
Slot: 3.3 ms (32 symbols)
Superframe: ms (31 slots)
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5. 802.22.1: Beacon Frame Structure
April 2008
: Beacon Frame Structure
Chip period: 13 µs
Symbol period: µs
Slot: 3.3 ms
Superframe: ms
MSF1: 28.4 ms
MSF1-2: 70.9 ms
MSF1-3: 98.2 ms
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6. 802.22.1: Synch Burst Chip period: 13 µs
April 2008
: Synch Burst
Chip period: 13 µs
Symbol period: µs (8 chips)
Slot: 3.3 ms (32 symbols)
Superframe: ms (31 slots)
MSF1: 28.4 ms
MSF1-2: 70.9 ms
MSF1-3: 98.2 ms
Synch sequence: 1.6 ms (15 symbols)
Synch burst: 3.1 ms (30 symbols)
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7. April 2008
: Modulation
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8. TG1 Detection: Reference Block Diagram
April 2008
TG1 Detection: Reference Block Diagram
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9. April 2008
Sensing Time: TBD
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Slide 9

10. Initi. Period: 0.8328 ms (8* PN sequences)
April 2008
Sensing Time:
Initi. Period: ms (8* PN sequences)
Worst case: 2.8 ms (19 idle symbols + 8 PN sequences)
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Slide 10

11. April 2008
Sensing Time: 5.1 ms
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Slide 11

12. April 2008
Sensing Time: 28.4 ms
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Slide 12

13. April 2008
Sensing Time: 70.9 ms
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Slide 13

14. April 2008
Sensing Time: 98.3 ms
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Slide 14

15. TG1 Detection: Sensing Time
April 2008
TG1 Detection: Sensing Time
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16. Synch Burst Detection in Initialization Period
April 2008
Synch Burst Detection in Initialization Period
symbols
46-Symbol window
46-Symbol window
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17. Synch Burst Detection out of Initialization Period (1/5)
April 2008
Synch Burst Detection out of Initialization Period (1/5)
Cognitive Receiver (a decision block)
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18. Synch Burst Detection out of Initialization Period (2/5)
April 2008
Synch Burst Detection out of Initialization Period (2/5)
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19. Synch Burst Detection out of Initialization Period (3/5)
April 2008
Synch Burst Detection out of Initialization Period (3/5)
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20. Synch Burst Detection out of Initialization Period (4/5)
April 2008
Synch Burst Detection out of Initialization Period (4/5)
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21. Synch Burst Detection out of Initialization Period (5/5)
April 2008
Synch Burst Detection out of Initialization Period (5/5)
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22. Synch Burst Detection out of Initialization Period
April 2008
Synch Burst Detection out of Initialization Period
Other options
Use two 5.1-ms windows
Use one 8.4-ms window
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23. TG1 Detection: Scheduling Long-Quiet Period
April 2008
TG1 Detection: Scheduling Long-Quiet Period
length of required quiet period ms
(MSF1) ms
(MSF1+MSF2) ms
(MSF1+MSF2+MSF3)
mean latency before scheduling a long period
32 ms
(<1 superframe)
88 ms
145 ms
max latency before scheduling a long period
160 ms
(1 superframe,)
320 ms
(2 superframes)
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24. TG1 Detection: Decision Flow Chart during a 5.1-ms Period (1/2)
April 2008
TG1 Detection: Decision Flow Chart during a 5.1-ms Period (1/2)
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25. TG1 Detection: Decision Flow Chart during a 5.1-ms Period (2/2)
April 2008
TG1 Detection: Decision Flow Chart during a 5.1-ms Period (2/2)
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26. TG1 Detection: Decision Flow Chart during a long quiet Period
April 2008
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27. TG1 Detection: Conclusions
April 2008
TG1 Detection: Conclusions
More details found in document 07/0491r4
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