october 4-7, 2004 los angeles, ca vowlan trends and opportunities kamal anand vice president...

October 4-7, 2004 • Los Angeles, CA • www.itexpo.com

VoWLANTrends and Opportunities

Kamal AnandVice President Marketing

Meru [email protected]


Wireless LAN Evolution

Number of Clients and Coverage

Applications

Products /Technology

• Email, Web

• Stand-aloneAccess Points

Stand Alone Multi-site

• Email, Web from different locations

• Centralized security and management

• High Density, Application QoS, Transparent mobility

• Voice and Data• Business applications• Primary connectivity

Pervasive


Why Voice Over Wireless LAN?Compelling Business Case for Enterprises

ReducedCell Bills

Total BenefitsOf WLANs that

carry Voice + Data

Lower costs for computer moves,

adds, changes (MAC)

ProductivityImprovement from

on-campus voice mobility

Lower wiring costs for data and voice

+Lower Phone

Move/Change costs

Email, Web access

Mobility

Enterprise Benefits from WLANs

TotalBenefits

of Data-only WLANs


Industry Moving to Support Enterprise Voice over Wi-Fi

Wireless Built-into Compute Devices

Laptops PDAs

VoIP Has Achieved Momentum

Strong growth in VoIP Lines and VoIP traffic

Good Quality & Features Available in Softphones

Laptops, Desktops PDAs

802.11 Voice Devices Coming to Market

802.11 only Phones Dual mode (Cellular, W-iFi) Custom devices

Source: In-Stat; IDC

VoWLANVoWLAN


Where is Wi-Fi Voice Getting Considered?

Traditional Deployments• Hospitals with phones and “hands-free” badges• Manufacturing / Warehouses

Emerging Applications• Remote Offices

– Complete “Unwired” offices reduce costs

• Enterprise-Campus– Reduced on-campus cell bills with dual-mode phones

– Improved availability on campus and on remote sites

• Hotels / hospitality– For staff communications

• Carrier Offerings for Enterprises – In conjunction with IP-Centrex based services


Why Don’t we See Much More Widespread Deployment Today?

1. Not Many Handsets Available

2. Handsets are Expensive

3. Wi-Fi Infrastructure Does Not Support Enterprise-Grade Voice


Phone Pricing Becoming AttractiveFor General Applications

• About 10 WiFi Phones on market in 2004

• Dual mode (WiFi and Cellular in the market in 2H, 2004)

• Overall solution pricing and choices becoming very attractive

Price Decline of WiFi Phone

0100200300400500600700800

2002 2003 2004 2005

$ P

er

Phone


Key Requirements For Enterprise–Grade Voice over WLAN

SecuritySecurity

Easy Deployment & Management

Easy Deployment & Management

Transparent MobilityTransparent Mobility

High DensityHigh Density

QoSQoSRecently Addressed

Focus of Today’sDiscussion

With Standard WiFi Clients

Widely Getting Addressed in

Industry

Enables Voice over WLAN

Higher ROI WLANs


Requirement: Support for High Density Even in Wireless “Hub”

20-25

Tot

al B

andw

idth

at

Pea

k (M

bps) 5

8

11

1

3

Baseband + Protocol Overhead

ContentionLoss

ContentionLoss

Today’s APPerformance

Desired, PredictablePerformance

Active Users Per AP

2003AP’s

DesiredAnd

Available Now

10-20

50-100+

Number of Active Users

Peak Aggregate Throughput in Single Cell Environment


• Unpredictable channel access, latency, jitter

• AP gets proportional share of channel as one of the clients

No over-the-air QoS

• Predictable channel access, latency, jitter

• AP gets the right amount of channel access (50%)

MS

I D

5.56

AP

6

4

8

10

12

5.36 5.38 5.4 5.44 5.46 5.48 5.5 5.52 5.545.42

Channel Access with Meru AP for QoS

Time (Sec)

Over-the-air QoS

Over-the Air QoS Technology Near-Deterministic Channel Access

5.46 5.48 5.5 5.52 5.54 5.56Time (Sec)

Channel Access with Today’s 802.11 APChannel Access with Today’s 802.11 AP

AP

6

4

8

10

12

5.36 5.38 5.4 5.445.42


Some Proprietary Solutions

2003 AP + Standard Client

AP with Over-The-Air QoSStandard Client

Requirement: Over-The-Air QoS High Voice Calls & With Landline Quality

Dynamic mix of voiceand data on same channels

Typically on separatechannels/network

20-30

7-10< 5

APWired QoS

Wired QoS

Over-the-air QoS

AP

Voice Quality

MOS ScoreHigher than

4.0

Over-the-air QoS


Requirement: Loss-less Handoff

50ms – 1 sec between handoffDisruptive for Voice

WLAN’s Prior To 2003

New WLANs

Virtual AP Architecture

Less than 2ms for Voice

BSSID = M BSSID = M

00:00

BSSID = XX BSSID = YY

01:00


Summary: What to Look for In an Enterprise WLAN System To Support Voice

1. Over-the-Air QoS Handle Mix of Voice and Data Over Same

Channels/Network High Number of Voice Calls Per AP Landline-quality (MOS Score of >4.0)

2. Support for High Density of Clients

3. Handoff Times of Less than 10ms Even with Security and across subnets

4. Should work with Standard WiFi Clients no proprietary technology on client/handset side


Enterprise Voice over Wi-FIImproved Productivity, Lower Costs

• Voice, Video, and Data over same WiFi network - with Dynamic Over-the-Air QoS

• Seamless integration to existing data network and voice devices

Floor 1Floor 1

Data CenterData Center

Floor 1Floor 1


Floor 1Floor 1


Floor 1Floor 1


Floor 1Floor 1


Floor 1Floor 1


iO

1 2 3

4 5 6

7 8 9

* 8 #

VoI Phone

WirelessLAN

Controller

SIP Server /VoIP Call Mgr

WiFI Phone

Wireless VideoConferenceWiFi Phone Laptop


• VoWLAN handsets used for internal staff communications

– Improved service

– Lower costs vs. cellular or paging system

• Plan to replace in-room phones with VoWLAN

• PDAs used for staff applications & soft-phone

• IP-Centrex Service

Hotel VoWLAN Deployment

MeruController


WAN

Virtual APVirtual AP

WiFiPhones

PDAs

Floor 2Floor 2

Floor 3Floor 3

Floor 4Floor 4

Floor 5Floor 5

Floor 6Floor 6

Floor 7Floor 7

ManagedIP Centrex

Service

Hosted IP PBX


Thank You!

Kamal AnandVice President Marketing

Meru [email protected]

october 4-7, 2004 los angeles, ca vowlan trends and opportunities kamal anand vice president...

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