Service Provider Requirements Tutorial

1. Service Provider Requirements Tutorial Authors: Date: 2005-03-14 Notice:This document has been prepared to assist IEEE 802.11. 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 grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.11. Patent Policy and Procedures:The contributor is familiar with the IEEE 802 Patent Policy and Procedures <http:// ieee802.org/guides/bylaws/sb-bylaws.pdf>, including the statement "IEEE standards may include the known use of patent(s), including patent applications, provided the IEEE receives assurance from the patent holder or applicant with respect to patents essential for compliance with both mandatory and optional portions of the standard." Early disclosure to the Working Group of patent information that might be relevant to the standard is essential to reduce the possibility for delays in the development process and increase the likelihood that the draft publication will be approved for publication. Please notify the Chair <stuart.kerry@philips.com> 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 802.11 Working Group. If you have questions, contact the IEEE Patent Committee Administrator at <patcom@ieee.org>. Charles Cook, Qwest

2. Abstract This tutorial introduces Service Provider concerns over the impact an 802.11 standard would have due to weaknesses in definition. An 802.11 standard that does not address these concerns results in negative Service Provider impact Not resolving issues leads to proprietary solutions promoted into the market, the opposite goal of a standards effort Resolving weaknesses should be considered a major part of achieving “Broad Market Potential” for 802.11n and 802.11 in general See “11-05-0109-03-000n SP Requirements Detailed” for specifics and details. Will be presented Wed 16 March in WNG SC meeting Charles Cook, Qwest

3. List of Contributors/Supporters • John Egan, Infineon, egan.external@infineon.com Charles Cook, Qwest

4. The 802.11n consumer “food chain” Sell… no service provisioning, typically • Provide the service • Help drive demand • Get most of the complaints Have need for high rate broadband link for high rate/quality content and access, otherwise why have 802.11n? In-home applications that will require the high data rates of 802.11n, can be mixed wired and wireless LAN We create innovations, it’s users that create the impact and applications 802.11 TGn “sees” currently Charles Cook, Qwest

5. DSL/Cable Modem Evolution • First modems deployed: Link in Ethernet out • Second generation modems now defined as Gateways: Link in Ethernet ports out DSL Router • Third generation modems deployed: Gateway with WLAN AP DSL Router w/ WLAN Charles Cook, Qwest

6. Some Facts… • Majority of SPs provide modem or gateway as part of service • Modem/Gateway varies by SP, service type, monthly cost, and by geographic market • Original Modem was simple DSL/Cable to Ethernet port, bridge function • Gateways replacing modems • Gateway is modem with Router/switch • Gateway with AP is option for some SPs, mandatory for others • In 2003, the number of: • APs sold in NA (all types): 6,111,016 • Wireless BB Gateways (DSL/Cable w/ Router/switch, AP) sold NA: 4,284,148 • Percentage ratio based on above: 70% • Market data from Infonetics Research Charles Cook, Qwest

7. Worldwide is similar to NA Infonetics Research Chart (actual to date (Q3 04) and forecasts) Wireless broadband gateways are Access Points with integrated router/switch capabilities and Cable/DSL uplinks that enable a group of users to share a broadband connection; can also have integrated security features such as VPN pass-through, firewalls, etc. Charles Cook, Qwest

8. 802.11n Service Provider drivers Service Provider, not the in-premises incumbent, has following options to provide in-home services • Run cable • Costs for truck roll plus time and cable, if consumer pays is a negative = new service cost too high versus existing • Fixed termination points counter-intuitive • Use existing coax (if a Telco), twisted pair (if Cable MSO), or power lines • Truck roll with related expenses • Cost versus 802.11n • Fixed termination points counter-intuitive • Use 802.11n • Enables “connectivity anywhere” marketing by SP & consumer electronics companies • No fixed point connections needed • Embedded Stations are consumer’s cost… reducing SP overhead • The possibility of using 802.11n depends on consumer’s ‘experience,’ QoS, BW, coverage, and encryption Charles Cook, Qwest

9. Additional SP drivers • High Throughput WLAN must support video, voice, and data • Video requires substantial QoS, low error rate/jitter, encryption, and WLAN management • Video session may be mobile, various rates • Voice requires QoS, low jitter, mobile sessions, service area • Data must be prioritized versus other types • Dual mode handsets allow for shifting between public cell network and WLAN. Better to have a long term technology definition and standard that does not reduce WLAN air throughput and quality. 15-20% (industry estimate) of handsets sold in US starting 2006 will be dual mode WLAN and Mobile/Cellular Charles Cook, Qwest

10. What do Service Providers need (in priority order) Highest possible consumer satisfaction… if WLAN doesn’t work faultlessly consumers blame Service Provider or set provider • QoS - primary requirement – video and high throughput data sessions (possibly pedestrian-speed mobile) • Streaming, high data rate video delivery, error free, with WLAN bandwidth priority • Management capability of WLAN resources/bandwidth • Reach versus rate, surrender some rate to get best reach • Longer Range with high data rate to enable extended range applications • Target reach/rates ~150m@45 Mbps and ~300m@25 Mbps • Mobility support • Reduce Doppler Effect – ex. support for WLAN sets in pedestrian speed sessions • Handoff • Mesh • Tight integration with mobile services to support IMS/MMS • Validate Encryption meets Content Provider requirements • Testability of any functionality to ensure qualification and certification ► 802.11 action eliminates the need for proprietary solutions, boosts the market Charles Cook, Qwest

11. TG/Standards that Impact Service Providers Charles Cook, Qwest

12. Example of Requested Evaluation Points Signal Distance & Drop - Interior Up to 6 walls? Charles Cook, Qwest

13. What this all nets out to… • To meet Broadest Market Potential • Need to meet Service Provider needs, as they… • Face the consumer in a high % of deployments • Will drive up mass Station deployments through AP deployments • Provide highest consumer satisfaction experience • Plug the holes regarding mobile sessions, including hand-offs between APs and Mesh Charles Cook, Qwest

14. Will this require a new TGn PAR? • No, see excerpts from PAR • 12. Scope of Proposed Project: • The scope of this project is to define an amendment that shall define standardized modifications to both the 802.11 physical layers (PHY) and the 802.11 Medium Access Control Layer (MAC) so that modes of operation can be enabled that are capable of much higher throughputs, with a maximum throughput of at least 100Mbps, as measured at the MAC data service access point (SAP). • 13. Purpose of Proposed Project: • The purpose of the project is to improve the 802.11 wireless local area network (LAN) user experience by providing significantly higher throughput for current applications and to enable new applications and market segments. Charles Cook, Qwest

15. Conclusion Service Providers of all types represent a substantial driver for achieving 802.11n broad market acceptance and success. Meet SP’s needs and we achieve Criteria 1 as well as eliminate the need for some future 802.11 effort to plug the holes… Need WNG to assess needs and react SPs’ position is that TGn must resolve several high priority issues before work completed Charles Cook, Qwest