1. IMT.Advanced aligned scope proposal
January 2008
doc.: IEEE /0081r2
January 2008
IMT.Advanced aligned scope proposal
Date:
Authors:
Courville (Motorola), Krammer (Marvell), Engwer (Nortel)
Marc de Courville, Motorola

2. Where should we focus our energy: differentiate!
January 2008
Where should we focus our energy: differentiate!
Fact: there will be always overlapping usage models between WLAN/WPAN/WMAN standards
In name of the KISS principle perhaps it would be simpler to de-prioritize from WFA usage models the ones already covered by other groups to gain focus
Exercise proposal: identify what usage models already captured by 15.3c and focus the energy/innovation of the 11VHT group on what is not being solved yet
Logical Venn diagram (not overlapping BSSs)
Mobility
16m
11n
11VHT
15.3c
Courville (Motorola), Krammer (Marvell), Engwer (Nortel)

3. IMT.Advanced aligned scope proposal for VHT (condensed version)
January 2008
IMT.Advanced aligned scope proposal for VHT (condensed version)
Design new PHY and MAC features supporting:
A multi-user BSS peak aggregated throughput of at least 1Gbps
Robust and flexible bandwidth management: native support for simultaneous multiple bandwidth operation
Add outdoor compatible delay spread resistance
Below 6GHz carrier frequency operation and
Backward compatibility with legacy IEEE802.11a devices in the 5.2GHz unlicensed band
Hooks for interworking with IMT-Advanced technologies in the licensed spectrum
Courville (Motorola), Krammer (Marvell), Engwer (Nortel)

4. Intent & rationale for the proposed scope
January 2008
Intent & rationale for the proposed scope
A multi-user BSS peak aggregated throughput of at least 1Gbps
Introduces a sum rate criterion instead of the individual link performance indicator to capture the multi-user space
Introduces simultaneous conversations support (being P2P or not)
Robust and flexible bandwidth management: native support for multiple bandwidth operation
It is important for coverage sake to be able to trade bandwidth for range from a link budget standpoint
Might be wise to introduce this right at the start and avoid the 11n coexistence difficulties
Add outdoor compatible delay spread resistance
Wi-Fi is already operating outdoor (Hotspots, 4.9GHz)
Coincides with VHT environment of interest highlighted by WFA
Below 6GHz carrier frequency operation and
Land of the IMT.Advanced sprectrum
Backward compatibility with legacy IEEE802.11a devices in the 5.2GHz unlicensed band
Hooks for interworking with IMT-Advanced technologies in the licensed spectrum
This is captured as a requirement in WP5C IMT.TECH IMT.EVAL documents: global solving of this issue might be out of the scope of 11 WG but still hooks to ease this interworking might be required to lead to a unified IMT.Adv solution
Courville (Motorola), Krammer (Marvell), Engwer (Nortel)

5. Initial alignment assessment with WFA categories
January 2008
Initial alignment assessment with WFA categories
WFA category of usage models coverage
Proposed scope alignement
Comments
Wireless Docking NO
WPAN arena .15.3c
In Home Distribution of HDTV and other content OK
P2P exchange between devices desirable
Rapid Upload and Download of large files to/from server
Depends
Can be accommodated in some cases, range issues
Backhaul Traffic (e.g. Meshing, Enterprise, Small Office) ?
Campus / Auditorium deployments
Need for increased delay spread resistance
Manufacturing Floor Automation
Courville (Motorola), Krammer (Marvell), Engwer (Nortel)

6. Still alpha version stage
January 2008
Still alpha version stage
This proposal is there to stimulate discussions and highlights a possible focus for 11VHT: please submit any constructive modifications. It consists in an open framework.
Recommendation: collectively we need to come up with
Refined analytical framework: metrics
Agreed upon terminology
Courville (Motorola), Krammer (Marvell), Engwer (Nortel)

7. January 2008
References
07/2988r0: Liaison from Wi-Fi Alliance to regarding WFA VHT Study Group Consolidation of Usage Models
07/0081r2: Mobile cooperation usage models
Courville (Motorola), Krammer (Marvell), Engwer (Nortel)