october 4-7, 2004 los angeles, ca vowlan trends and opportunities kamal anand vice president...
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October 4-7, 2004 • Los Angeles, CA • www.itexpo.com
VoWLANTrends and Opportunities
Kamal AnandVice President Marketing
Meru Networkskamal@merunetworks.com
October 4-7, 2004 • Los Angeles, CA • www.itexpo.com
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
October 4-7, 2004 • Los Angeles, CA • www.itexpo.com
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
October 4-7, 2004 • Los Angeles, CA • www.itexpo.com
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
October 4-7, 2004 • Los Angeles, CA • www.itexpo.com
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
October 4-7, 2004 • Los Angeles, CA • www.itexpo.com
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
October 4-7, 2004 • Los Angeles, CA • www.itexpo.com
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
October 4-7, 2004 • Los Angeles, CA • www.itexpo.com
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
October 4-7, 2004 • Los Angeles, CA • www.itexpo.com
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
October 4-7, 2004 • Los Angeles, CA • www.itexpo.com
• 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
October 4-7, 2004 • Los Angeles, CA • www.itexpo.com
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
October 4-7, 2004 • Los Angeles, CA • www.itexpo.com
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
October 4-7, 2004 • Los Angeles, CA • www.itexpo.com
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
October 4-7, 2004 • Los Angeles, CA • www.itexpo.com
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
Data CenterData Center
Floor 1Floor 1
Data CenterData Center
Floor 1Floor 1
Data CenterData Center
Floor 1Floor 1
Data CenterData Center
Floor 1Floor 1
Data CenterData Center
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
October 4-7, 2004 • Los Angeles, CA • www.itexpo.com
• 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
Data CenterData Center
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
October 4-7, 2004 • Los Angeles, CA • www.itexpo.com
Thank You!
Kamal AnandVice President Marketing
Meru Networkskamal@merunetworks.com
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