may 2000 deploying the optimal bwa architecture ptp vs. ptmp broadband wireless world forum 2001...
Post on 17-Jan-2016
214 Views
Preview:
TRANSCRIPT
May 2000
Deploying the OptimalDeploying the OptimalBWA ArchitectureBWA Architecture
PTP vs. PTMPPTP vs. PTMP
Broadband Wireless
World Forum 2001
Rami HadarRami HadarExecutive Vice PresidentExecutive Vice PresidentMarketing & Business DevelopmentMarketing & Business Development
Point to PointPoint to Point
Star ConfigurationStar Configuration
Ring ConfigurationRing Configuration
Point to PointPoint to Point
Advantages Proven Technology High Capacity Lower Up-front Investment
Disadvantages Dedicated bandwidth to a single location . Star configuration: emulates PMP, but antenna
placement becomes an issue and business case fails after 8-10 links
Ring configuration: emulates a fiber ring. Adding new nodes takes 3 building climbs
2 x #subscribers network componentsOptimal for high bandwidth to aOptimal for high bandwidth to a single location single location
Point to Multipoint ConfigurationPoint to Multipoint Configuration
Advantages Real-time allocation of bandwidth based on user
demand Oversubscribe equipment and frequency = Lower
CapEx Central base stations aggregates & concentrates
traffic from many subscribers. Smaller hub roof space used No need for external concentration device Roof climbs = # subscribers + 1
# of subscribers +1 network elements
Disadvantages Higher upfront cost than PTP Bandwidth to a single building < 45Mbps
Point to MultipointPoint to Multipoint
Optimal access method to small and Optimal access method to small and medium sized buildingsmedium sized buildings
Cost Comparisons: CapExCost Comparisons: CapEx CapEx Required to deliver identical Services/Revenue
Point to Point (based on industry averages)
Equipment DS3 Radio: $20,000 IAD (needed for each link): $5,000 ATM Switch (needed for each “Hub” Building): $30,000
Install Each link (two buildings, cover ATM as well): $10,000
Point to Multipoint (based on industry averages)
Equipment Base Station: $200,000 CPE: $6,750 ADM (needed for Fiber Connection) : $15,000
Install Base Station: $20,000 CPE: $5,000
Confidential and Proprietary
$0.0
$100.0
$200.0
$300.0
$400.0
$500.0
$600.0
$700.0
$800.0
1 3 5 7 9 11 13 15 17 19
Building On-Net (Links)
Co
st (
Th
ou
san
ds)
Point to Point Point to MultiPoint
CapEx Cost CurveCapEx Cost Curve
9 Link Cross9 Link CrossOver PointOver Point
Semi-Urban Mid Size CitySemi-Urban Mid Size City
Cell Coverage: 150 km2 Rain Region: D Population: 380,000 117 buildings* with 25,000 ft2 or
more (requiring >3Mbps Access ) Average of 4 Business per
Building 9% Penetration Rate of
Addressable Market (Businesses) by the End of year 3
Average 2 ports per customer 5% price decline every year 10% customer churn rate
30 Buildings Serviced by end of year 3
Confidential and Proprietary
* U.S. Department of Energy
Year 1 Year 2 Year 3 TotalBuildings Added 15 5 10 30
PTP* $585,000 $175,000 $380,000 $1,140,000
PTMP $400,000 $60,000 $120,000 $580,000
Large Urban DowntownLarge Urban Downtown
Multiple Cell coverage: 500 km2 Rain Region: N Population: 14,000,000 1250 buildings averaging 50,000 ft2 or more (requiring 4 Mbps
of Bandwidth or more) Average of 20 Business per Building 6% Penetration Rate of Addressable Market (Businesses) by
the End of Year 3 Average 1 ports per customer 10% price decline every year 10% customer churn rate
306 Buildings Serviced by end of year 3
Confidential and Proprietary
* United Nations/Private Commercial Study
Year 1 Year 2 Year 3 Total
Buildings Added 136 119 51 306
PTP* $5.1M $4.5M $1.9M $11.5M
PTMP $4.2M $0.2M $0.1M $4.5M
0369
1215182124
1 3 5 7 9 11 13 15 17 19 21 23
Months
Num
ber
of Bld
s O
n-N
et
Semi-Urban Mid-Size City Suburban Office ParkLarge Urban Downtown
Buildings On-Net by MonthBuildings On-Net by Month
9 Link Cross9 Link CrossOver PointOver Point
DSL, Cable Modem, MMDS2 Mbs
10 Mbs
20 Mbs
45 Mbs
155 Mbs
Point-Multipoint BWA
Point-Point BWA
Fiber
BWA: Filling the Gap Between Copper & FiberBWA: Filling the Gap Between Copper & Fiber
BandwidthBandwidth DensityDensity
HighHigh
MediuMediumm
LowLow
top related