March 2005
doc.: IEEE 802.11-05/0208r1
Service Provider Requirements Tutorial
Date: 2005-03-14
Authors:
Name
Company Address
Charles Cook
Qwest
Brian Ford
BellSouth
1801 California Street
26th Floor
Denver, CO 80027
725 West Peachtree
Roo m 7A43
Atlanta, GA 30308
Phone
email
(303) 896-5652
charles.cook2@qwest
.com
Brian.ford@bellsouth
.com
(404) 986-9631
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>.
Submission
Slide 1
Charles Cook, Qwest
March 2005
doc.: IEEE 802.11-05/0208r1
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
Submission
Slide 2
Charles Cook, Qwest
March 2005
doc.: IEEE 802.11-05/0208r1
List of Contributors/Supporters
•
John Egan, Infineon, egan.external@infineon.com
Submission
Slide 3
Charles Cook, Qwest
March 2005
doc.: IEEE 802.11-05/0208r1
The 802.11n consumer “food chain”
Sell… no service
provisioning, typically
Retailers
Service Provider
MP3 Client
HD TV
VoIP Phone
iMac
SD TV
PDA
•Provide the service
•Help drive demand
•Get most of the complaints
Consumer
802.11n AP
Media Server
Laptop computer
Have need for high rate
broadband link for high
rate/quality content and access,
otherwise why have 802.11n?
802.11 TGn
“sees” currently
Submission
802.11n standard
In-home applications that will
require the high data rates of
802.11n, can be mixed wired
We create innovations, and wireless LAN
it’s users that create
the impact and
applications
Technologists (TGn)
Slide 4
Charles Cook, Qwest
March 2005
doc.: IEEE 802.11-05/0208r1
DSL/Cable Modem Evolution
Modem
Modem
•First modems deployed: Link in Ethernet out
Router
•Second generation modems now
defined as Gateways: Link in
Ethernet ports out
DSL Router
Modem
Router
WLAN
•Third generation modems
deployed: Gateway with
WLAN AP
DSL Router w/ WLAN
Submission
Slide 5
Charles Cook, Qwest
March 2005
doc.: IEEE 802.11-05/0208r1
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
Submission
Slide 6
Charles Cook, Qwest
March 2005
doc.: IEEE 802.11-05/0208r1
Worldwide is similar to NA
Infonetics Research Chart (actual to date (Q3 04) and forecasts)
Worldwide Access Point Unit Breakdown
80%
76%
76%
76%
77%
Standalone
SOHO/consumer
60%
60%
Standalone
SP/enterprise
40%
20%
Wireless bb gateways
WLAN bridges
18%
14%
8%
0%
CY03
14%
14%
14%
14%
9%
9%
9%
9%
5%
4%
4%
CY05
CY06
4%
CY04
CY07
Calendar Year
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.
Submission
Slide 7
Charles Cook, Qwest
March 2005
doc.: IEEE 802.11-05/0208r1
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
Submission
Slide 8
Charles Cook, Qwest
March 2005
doc.: IEEE 802.11-05/0208r1
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
Submission
Slide 9
Charles Cook, Qwest
March 2005
doc.: IEEE 802.11-05/0208r1
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
1. QoS - primary requirement – video and high throughput data sessions
(possibly pedestrian-speed mobile)
1. Streaming, high data rate video delivery, error free, with WLAN bandwidth priority
2. Management capability of WLAN resources/bandwidth
3. Reach versus rate, surrender some rate to get best reach
1. Longer Range with high data rate to enable extended range applications
•
Target reach/rates ~150m@45 Mbps and ~300m@25 Mbps
4. Mobility support
1.
2.
3.
4.
Reduce Doppler Effect – ex. support for WLAN sets in pedestrian speed sessions
Handoff
Mesh
Tight integration with mobile services to support IMS/MMS
5. Validate Encryption meets Content Provider requirements
6. Testability of any functionality to ensure qualification and certification
► 802.11 action eliminates the need for proprietary solutions, boosts the market
Submission
Slide 10
Charles Cook, Qwest
March 2005
doc.: IEEE 802.11-05/0208r1
TG/Standards that Impact Service Providers
.11i enhanced
security
.11v network
management
.11s Mesh
Networking
.11k radio resource
measurement
Service Provider
Requirements .11n
High Throughput
.11r fast roaming
.11w Security
Management
Frames
.11e QOS MAC
enhancements
.11t performance
testing
Submission
Slide 11
Charles Cook, Qwest
March 2005
doc.: IEEE 802.11-05/0208r1
Example of Requested Evaluation Points
Signal Distance & Drop - Interior
Width = D2
Width = D2
Room 2
Distance = D2
Distance = D1
Distance = D1
Distance = D2
Measuring
device
Internal AP
Internal AP
Interior Wall
Room 1
Room 2
Room 1
Interior AP Landscape
Submission
Up to 6 walls?
Interior AP Overhead
Slide 12
Charles Cook, Qwest
March 2005
doc.: IEEE 802.11-05/0208r1
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
Submission
Slide 13
Charles Cook, Qwest
March 2005
doc.: IEEE 802.11-05/0208r1
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.
Submission
Slide 14
Charles Cook, Qwest
March 2005
doc.: IEEE 802.11-05/0208r1
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
Submission
Slide 15
Charles Cook, Qwest