January 2003

Joe Houle, AT&TSlide 1

doc.: IEEE 802.11-03/001r0

Submission

A Service Provider View ofA Service Provider View of QoS Needs for QoS Needs for

Hot Spot and Public Venues Hot Spot and Public Venues

Joe HouleJoe Houle

AT&T Business ServicesAT&T Business Services

Managed ServicesManaged Services

January 2003

Joe Houle, AT&TSlide 2

doc.: IEEE 802.11-03/001r0

Submission

Talk Outline

• A Look at Hot Spots (HSs) and Public Venues (PV)

• Perception of Market and Growth• QoS and Capacity Issues• Needs of QoS Based Services• Recommendations

January 2003

Joe Houle, AT&TSlide 3

doc.: IEEE 802.11-03/001r0

Submission

A Look at Hot Spots and Public Venues

• Services not sold directly to the public but rely on ISPs and telecommunications providers to market, bill, and support

• WLANs are proliferating and are reaching higher speeds but at a penalty of reduced range

• Devices used in the enterprise space will likely be the same devices used for the HS and PV spaces

• Quality of Service will be required for bandwidth tiered service, IP Telephony, Gaming and Streaming services

• Access network devices will require 5 years of useful economic life• Desire to upgrade reliability, reduce management overhead,

increase utility

January 2003

Joe Houle, AT&TSlide 4

doc.: IEEE 802.11-03/001r0

Submission

Perception of Market and Growth• Research firm In-Stat/MDR estimates users will snap up about 16

million Wi-Fi devices, which typically plug into laptops and other computers, this year.

• A company has been created to deploy a nationwide wireless data network in coffee shops, hotels and other public venues.

• Many analysts initially predicted that Wi-Fi would undercut the expensive effort of major carriers to build out new cellphone networks capable of delivering video and other streams of data to hand-held devices.

• Now some are arguing that Wi-Fi and cellphone technologies may complement one another and spur demand for such services and cut the costs of delivering them.

• Goal is to provide wireless access within five minutes of anyone in the top 50 U.S. metropolitan areas.

• This means deploying a network with “tens of thousands of access points" by 2004

January 2003

Joe Houle, AT&TSlide 5

doc.: IEEE 802.11-03/001r0

Submission

QoS, Capacity, Inter-Op Needs• Businesses view telephony quality as part of company image• Hot Spots and Public Venues must run with substantial loading to

maximize return on capital expenditure • Radio networks will remain throughput-challenged due to spectrum, range

and power constraints (can’t raise speed like Ethernet)• MAC QoS guarantees are necessary to preserve end-to-end connection

quality under heavy/overload conditions…QoS must be scaleable• “Parameterized” QoS simplifies interface with corporate and backbone

networks, tiered services, supports end-to-end concatenation of links• Increasing use of IP Telephony, multimedia (audio, video) and gaming for

customer requires QoS “future-proofing”• QoS option must be common to all QOS-enabled clients to maximize

utility regardless of location • The wired network behind the Access Point is already QOS-enabled, it is

standardization in the wireless space that is in the critical path

January 2003

Joe Houle, AT&TSlide 6

doc.: IEEE 802.11-03/001r0

Submission

Radio Resource Management Needs

• Reporting of condition of the wireless link and status is required– Signal Strength (AP and Client)

– Error rate

– Loading of the wireless link

– Capabilities of the client

• QoS(EDCF-HCF-Legacy)

• security

• Provide mechanisms for client assisted handoff, remotely control channel/power, security for signaling/managed access

January 2003

Joe Houle, AT&TSlide 7

doc.: IEEE 802.11-03/001r0

Submission

PWLAN Service Provider - Hot Issues -

Network Access Point

Authentication Network-based authentication infrastructure (for Dial access and secure tunnels)

Need small number of approaches that dove-tails with network approaches.

Security By nature of wires and feature set, there is network security, End-to-End (ie IPSec) is an option

Need standard approach to secure Client to AP communication.

Access Control Functionality already in network, plans to enforce QOS classes

Need scalable and efficient mechanism to tie together user authentication with network-based access control

Manageability Extensive vendor requirements for centralized manageability

Equipment needs carrier-class manageability features

QoS Network enabled for QOS today Need carrier class QoS in the standard for unified service

January 2003

Joe Houle, AT&TSlide 8

doc.: IEEE 802.11-03/001r0

Submission

QOS-related Recommendations

• Facilitate managed-service, QoS-dependent market via required network-grade mode

• Make 802.11 more user friendly by migrating from “connectivity” standard to “access” standard

• Provide service providers options for QoS and Radio Resource Management as service rolls out