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doc.: IEEE /0507r1 Submission David Wong, Xiaoming Peng et al., I2R May 2010 Slide 3 Spectrum measurement in MAC Structure Beacon interval m Beacon interval m+1Beacon interval m-1 …… Service Period 2 Service Period 1 Contention Based Period 2 Beacon Period Contention Based Period 1 Announceme nt Time Association Beamforming Training Station #1 sensingr eport … Quasi-omni Quiet Period Quasi-omni Reporting Period Dir. #1 …Dir. #n Dir. #1 …Dir. #n Station #m sensingr eport Mini-slots for sensing reports by all stations in direction #1.
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doc.: IEEE 802.11-10/0507r1
Submission David Wong, Xiaoming Peng et al., I2R
May 2010
Slide 1
Spectrum Measurement for TGadDate: 2010-05-19
Authors:
Name Affiliations Address Phone emailDavid Tung Chong
WongInstitute for
Infocomm Research (I2R), A*STAR
1 Fusionopolis Way, #21-01
Connexis, Singapore
65-6408-2258 [email protected]
Xiaoming Peng I2R, A*STAR Same as above 65-6408-2429 [email protected]
Francois Chin I2R, A*STAR Same as above 65-6408-2530 [email protected]
Xuhong Qu I2R, A*STAR Same as above 65-6408-2477 [email protected]
Raymond Jararaj s/o Jayabal
I2R, A*STAR Same as above 65-6408-2226 [email protected]
doc.: IEEE 802.11-10/0507r1
Submission David Wong, Xiaoming Peng et al., I2R
May 2010
Slide 2
Abstract• We propose a spectrum measurement technique
– Allow the existing TGad network to detect another TGad network or other 60GHz network.
• Our scenario covers the case when both TGad network and another TGad network or other 60GHz network are in operations and the other TGad/60GHz network move into the vicinity of the existing TGad network under consideration.
– The spectrum measurement will be carried out in every N beacon interval based on demand
• Low complexity
doc.: IEEE 802.11-10/0507r1
Submission David Wong, Xiaoming Peng et al., I2R
May 2010
Slide 3
Spectrum measurement in MAC StructureBeacon interval m Beacon interval m+1Beacon interval m-1 ……
Service Period 2
Service Period 1
Contention Based Period 2
Beacon Period
Contention Based Period 1
Announcement Time
Association Beamforming
Training
Station #1 sensingreport
…
Quasi-omni Quiet Period
Quasi-omni Reporting
Period
Dir. #1
… Dir. #n
Dir. #1
… Dir. #n
Station #m sensingreport
Mini-slots for sensing reports by all stations in direction #1.
doc.: IEEE 802.11-10/0507r1
Submission David Wong, Xiaoming Peng et al., I2R
May 2010
Slide 4
Main Additions (1/3)
• The main additions to the MAC structures are the quasi-omni quiet period and the quasi-omni reporting period.
• There are multiple sub-quiet periods under the Quiet Period. Each sub-quiet period is used by the AP or STA to sense for the other network in their particular direction out of the n possible directions.
Quasi-omni Quiet Period
Quasi-omni Reporting
Period
Example of collaborative multi-direction sensing in
the quiet period
doc.: IEEE 802.11-10/0507r1
Submission David Wong, Xiaoming Peng et al., I2R
May 2010
Slide 5
Main Additions (2/3)
• Note that the initial direction of sensing by each STA should be in such a way that all stations in that sector cover different directions.– This can be assigned to the STA by the AP when it associates with the
AP. – Another way is to use the STA’s MAC address and compute it.
• Thus, the AP and the STAs are sensing collaboratively in multiple directions as whole during the quiet period.
• There are also multiple mini-slots in the different directions for the STAs to report their sensing outcomes.
doc.: IEEE 802.11-10/0507r1
Submission David Wong, Xiaoming Peng et al., I2R
May 2010
Slide 6
Main Additions (3/3)
• The mini-slots in different direction can be dynamically assigned to STAs by the AP when the STAs associate with the AP and indicated in a new field in the beacon period in that direction.
• The particular mini-slot for a STA will be removed when the STA disassociates from the AP.
• The AP can decide if the other TGad network is present or not, based on the data fusion rules.
doc.: IEEE 802.11-10/0507r1
Submission David Wong, Xiaoming Peng et al., I2R
May 2010
Slide 7
Summary• We propose a spectrum measurement technique to
detect other TGad/60GHz network(s).– The TGad network could then move to another band.– The options for spectrum measurement cater for the case when the
TGad network and another TGad/60GHz network, both in operations, come into contact.
– These options can be used in every beacon interval, or once in a number of beacon intervals.
doc.: IEEE 802.11-10/0507r1
Submission David Wong, Xiaoming Peng et al., I2R
May 2010
Slide 8
References1. 11-10-0249-02-00ad-Basic-TGad-MAC-Layer-Proposals-
and-Options-for-Coexistence2. 11-09-1160-03-00ad-proposed-evaluation methodology-
additions3. 11-09-0796-00-00contention-based directional MAC
protocols: a survey4. 11-10-0432-02-00 ad-cp-presentation5. 11-10-0433-02-00 ad-cp-specification
doc.: IEEE 802.11-10/0507r1
Submission David Wong, Xiaoming Peng et al., I2R
May 2010
Slide 9
Straw Poll• Do you support inclusion of the technique,
- Spectrum Measurement as described in 11-10/0507r1 in the TGad draft amendment?– Y:– N:– A:
Slide 9
