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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: WNG Liaison Report, Nov 2007 Date Submitted: 11/15/2007 Source: Kursat Kimyacioglu, Philips Research Address 540 Alder Drive, Milpitas, CA 95010 Voice: 1-408-468-3916, FAX: 1-408-468-3998,

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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

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  1. Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title:WNG Liaison Report, Nov 2007 Date Submitted: 11/15/2007 Source: Kursat Kimyacioglu, Philips Research Address 540 Alder Drive, Milpitas, CA 95010 Voice: 1-408-468-3916, FAX: 1-408-468-3998, E-Mail: Kursat.Kimyacioglu@philips.com Abstract: This document highlights the actions taken by the IEEE 802.11 WNG SC during the Nov. 2007 Plenary Meeting in Atlanta, GA Purpose: Liaison report Notice: This document has been prepared to assist the IEEE P802.15. 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 P802.15.

  2. IEEE 802.11 WNG Liaison Report for Nov. ’07 Atlanta Plenary Kursat Kimyacioglu

  3. 802.11 WNG Liason ReportA Summary • Only one session was held at Tue. AM1 • Three presentations were made • Extreme BW Wireless Area Networks Utilizing THz Frequencies • Current Status of THz Spectrum Allocation • CP Support in 802.11 • 802.11 WG members are urged to participate in regulatory activities to allow active communications and networking solutions operating over THz spectrum • Action: .11 WNG will draft a letter for .11 chair to write to.18 chair to be sent to ITU as a contribution

  4. Presentation 1: Extreme BW Wireless Area NetworksUtilizing THz FrequenciesDavid Britz/AT&T • Doc No: IEEE 802.11-07/2068r0 • We are running out of Radio spectrum, Where do we go next? • TeraHertz (is 300 GHz and above) • Attenuation at/around 60 GHz is terrible • THz is photonic in characteristics • Could be attractive for femtocells for broadband networking • Low cost w/o DSP • Potential applications • In-Home THz Networks • HD Video Projection • Airplane Area Networks • WPANs along pedestrian paths backboned by free space optical carriers and fiber • A lot of publications and groups in action • Challenges: Atmospheric attenuation, no wall penetration • Advantages: Enormous BW (can satisfy the needs till the end of century) • License exempt • Starts from 300 GHz (not far from 90-100 GHz)

  5. Presentation 2:Current Status of THz Spectrum AllocationDavid Britz AT&T • US delegation to ITU/WRC have managed to delay THz spectrum allocations to the conference in 2011 • A letter is being drafted to .11 chair to write to 18 chair for a letter to be sent to ITU • Move to define and dominate THz spectrum is well underway –outside USA • THz spectrum is being carved up among science, satellite and amateur radio interests • Commercial interests in Terahertz spectrum utilization appear to be actively excluded by ITU/WRC decision policies • Does 802/802.11 VHT need to pay attention or push back via FCC on these proposed exclusive ITU spectrum allocations? 2007 IARU document implies ITU/WRC-2000 conference had extended a mandate that states freq bands “above” 275 GHz should be avoided by active radio communication services. • Delay to deal with the THz spectrum by ITU?WRC may allow involvement of 802.11.There is a need for broader industry input. • Arab States have understood the value and have proposals at WRC to have active comms systems • Going forward • Due to the intervention of the US Delegation and others, the allocation of terahertz spectrum has been put off to 2011 or beyond • This reprieve is short lived and requires the demonstration of active service utilization • Passive systems (bands) will be protected, and bands protected could possibly be extended without active service utilization • The ITU recommends “investigation of the potential uses of the bands between 275 and 3000 GHz by suitable applications • Now we have the time to address the issue more thoroughly what part in active service research or utilization will 802xx play?

  6. Presentation 3:CP Support in 802.11Sandra Qin et al/Samsung • Document No: IEEE 802.11-07/2778r0 • CP is considered as an application level (L7) only issue • WLAN/WPAN A/V applications are becoming more popular • CP need is becoming ubiquitous • CP support from PHY & MAC • Proximity control (Content needs to be constrained to a limited range)DTCP: Round Trip Time (RTT less than 7 ms) New work in accurate ranging is required. • Packet level link protection (DTCP & HDCP for stream based apps, packet based CP is more appropriate with copy right control bits and cipher suite negotiation. TGi & TGw works New work in m MAC layer support is required • Fading channel support (Bit error can cause false alerts , retransmission causes delayNew work: Error propagation prevention • Roaming support:

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