1. May 2007
doc.: IEEE c
doc.: IEEE /0783r0
July 2007
Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: Liaison Report – WNG San Francisco.
Date Submitted: 18 July,. 2007, Michael D. McInnis, The Boeing Company
P.O. Box 3707, M/S 7M-CA
Seattle, WA, USA, 98124
Voice: ,
Abstract:.This document is a subset of document wng for the purpose of explaining the status of that group.
Purpose: Update the WG on the WNG status.
Notice: This document has been prepared to assist the IEEE P 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.
Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P
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Mike McInnis, The Boeing Company
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Mike McInnis, The Boeing Company

2. Some Information in this document was respectfully copied from:
May 2007
doc.: IEEE /0783r0
July 2007
Some Information in this document was respectfully copied from:
Presentation Slides and Minutes of IEEE WNG SC July 2007 Session
Mike McInnis, The Boeing Company
Mike McInnis, The Boeing Company

3. May 2007
doc.: IEEE /0783r0
July 2007
Tuesday 17 July 2007, 08:00 – 10:00
WNG Opening Report, IEEE P /2147r0
Presentations
Segregated Data Services in , 11-07/2161r1
Rotated and Scaled Alamouti Coding, 11-07/2114r0.
WPAN-WLAN-WWAN Multi-Radio Coexistence, 11-07/2117r0.
Attendance was approximately 50 people.
Mike McInnis, The Boeing Company
Mike McInnis, The Boeing Company

4. Segregated Data Services in 802.11 IEEE P802.11-07/2161r1
July 2007
Segregated Data Services in IEEE P /2161r1
Abstract
Scenarios and requirements for adding segregated services / VLANs to IEEE are presented along with some comments on existing or prospective mechanisms.
Motivation
Segregating traffic for “visitors” who should only have access to the Internet and limited facilities, from “insider” traffic.
Provision of different services for free and subscriptions services in Hot Zone or Municipal systems. (May also segregate subscription service through different carriers.)
In mesh environments, ability to safely forward data through nodes with limited trust.
To enable aggregation of traffic over a single infrastructure for efficient deployment.
Dedicated traffic segregation by type, such as VoIP
Straw Poll Results
Should the WNG SC proceed at this time to vote on a motion to set up a Study Group? Yes: 6 No: Abstain: 18
Should receive further presentations on the topic of segregated data services? Yes: 46 No: 0 Abstain: 1
Mike McInnis, The Boeing Company

5. Rotated and Scaled Alamouti Coding 11-07/2114r0
July 2007
Rotated and Scaled Alamouti Coding /2114r0
Abstract
This presentation introduces a new space-time coding scheme for 2 transmit antenna systems to the community.
Alamouti-coding [1998] used in 11n for 2x2 MIMO systems is based on repetition- retransmission.
Shown to be suboptimum for multiple receive antennas (Diversity-Multiplexing Tradeoff) [Tse-2004]
We propose to use instead of ordinary repetition so-called "scaled repetition" together with rotation.
Motivation
Is there any better space-time block code for 2x2 MIMO systems?
Golden codes [Belfiore-2005]
Tilted QAM [Wornell-2003]
What about decoding complexity?
Exhaustive ML search
Is there any better space-time block code for 2x2 MIMO systems with low decoding complexity?
Conclusion
ROTATED and SCALED ALAMOUTI CODING PROVIDES
Better Message-Error-Rate performance than the ALAMOUTI CODE for systems with multiple receive antennas.
Good Message-Error-Rate performance close to the GOLDEN CODE.
Mike McInnis, The Boeing Company

6. WPAN/WLAN/WWAN Multi-Radio Coexistence 11-07/2117r0
July 2007
WPAN/WLAN/WWAN Multi-Radio Coexistence /2117r0
Abstract
This presentation gives an overview on multi-radio coexistence, covering usage model, problem, analysis, and solution.
It shows that coexistence has to consider both proximity and collocation. Collocation imposes big challenges due to limited isolation and various interference sources.
Today’s solutions are neither effective , nor scalable with number of radios and number of vendors.
Standardization efforts are needed to provide information service, command, and air-interface support necessary for addressing coexistence issues.
Conclusion
Multi-radio simultaneous operation is becoming the norm, and coexistence interference is the limiting factor
Proximity & collocation
Existing approaches are ineffective
lack of standard support in information service, commands, air-interface, etc. , and often less optimal use of resources or spectrum
solutions forced to be pair-wise, vendor-specific, component-specific and NOT scale with number of radios, and number of vendors (inter-op)
Call-for-discussion
Mike McInnis, The Boeing Company