w&m 2009 – building cost-efficient next generation microwave backhaul networks
TRANSCRIPT
Slide 1
Cost Effective Microwave Backhaul for Mobile OperatorsMobile and Wireless 09
May 2009
Slide 2Confidential Cambridge Broadband Networks Ltd.
The Company
Headquarters in Cambridge UK
Market-driven, world class technology
Research and product design in Cambridge
Manufacture by Benchmark in China
Delivering VectaStar solutions since 2001
Largest carrier-class PMP vendor, four-fold increase in sales 2007 to 2008
More than 50 customers in 35 countries
First Backhaul vendor sponsor to join NGMN Alliance
Slide 3Confidential Cambridge Broadband Networks Ltd.
Slide 4Confidential Cambridge Broadband Networks Ltd.
we are living in
exponential times
Slide 5Confidential Cambridge Broadband Networks Ltd.
Slide 6Confidential Cambridge Broadband Networks Ltd.
the number of text messages sent and received every day exceeds the total population
of the planet
Slide 7Confidential Cambridge Broadband Networks Ltd.
Mobile Data is Everywhere‘Hutchison-Whampoa’s 3 have seen their mobile broadband subscriber base increase by 305% in one year but their ARPU is down 16%!’
‘Network capacity is the issue, not the iPhone’
‘T-Mobile Ramps Up Backhaul In Readiness
for 3G HSDPA’
‘Mobile data right now is not a completely scalable model. When people use more data, we the operators incur enormous costs on backhaul.’ FranceTelecom/Orange
‘IPhone Influx Pushes AT&T to the Limit’
‘BlackBerry Storm Launch Crashes Verizon Network’
Slide 8Confidential Cambridge Broadband Networks Ltd.
Did you know
Slide 9Confidential Cambridge Broadband Networks Ltd.
Mobile operators want backhaul solutions
that cost less
Slide 10Confidential Cambridge Broadband Networks Ltd.
6 out of 10 cell sites in Europe will be backhauled by microwave in
2014
Slide 11Confidential Cambridge Broadband Networks Ltd.
the cost of microwave backhaul seems like a good place to start
reducing backhaul costs
Slide 12Confidential Cambridge Broadband Networks Ltd.
Alternatives are expensive $11.8B will be spent on leased backhaul in 2014
Slide 13Confidential Cambridge Broadband Networks Ltd.
Did you know
Slide 14Confidential Cambridge Broadband Networks Ltd.
There are two flavors of microwave backhaul
Slide 15Confidential Cambridge Broadband Networks Ltd.
Point-to-Point microwave networks require aggregation hubs to manage the traffic from multiple
links
Tree and branch architecture applied to reduce antenna count at hub: Link multiplier 1.38 radios to backhaul 3 sites (last link redundant)
Alternative is more hub sites
Site 3
Hub Site 1
Site 2
Hub
Point to Point provides a dedicated
link between two points
Slide 16Confidential Cambridge Broadband Networks Ltd.
It ends-up looking like
thisnumerous
links aggregated
into one place
Slide 17Confidential Cambridge Broadband Networks Ltd.
It was a good idea22 years ago
Slide 18Confidential Cambridge Broadband Networks Ltd.
Less than half the radios compared to PtP microwave, no requirement for
tree-branch complexity.Backhaul Spectrum is dynamically allocated to terminals as required
improving efficiency
Point to MultipointA single point
manages several points
Slide 19Confidential Cambridge Broadband Networks Ltd.
clearly Point to Multipoint must be a more cost effective way
to build a backhaul network
Slide 20Confidential Cambridge Broadband Networks Ltd.
It definitely uses fewer radios
0
10
20
30
40
50
60
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Number of Cell Sites
Num
ber o
f Rad
ios
Number of PtP radios Tree & Branch PtP Point to MultiPoint
Slide 21Confidential Cambridge Broadband Networks Ltd.
Point to Point is the dominant form of microwave backhaul in Europe and the world.
(someone needs to wake up and smell the coffee)
Slide 22Confidential Cambridge Broadband Networks Ltd.
Mobile operators want backhaul solutions that cost less,
deliver higher performance and reduce the complexity of
their networks
Slide 23Confidential Cambridge Broadband Networks Ltd.
2005 2006 2007 2008 2009 2010 2011 2012 and onwards
LTE
DL: ~384KbpsUL: ~384Kbps
DL: ~14.4MbpsUL: ~5.76Mbps
DL: ~42MbpsUL: ~11Mbps
DL: ~141Mbps+UL: ~50Mbps
HSPA+~100 ms
~70 ms
~45 ms
~15ms
HSPA (HSDPA then HSUPA)
*Increasing Bandwidth *Decreasing LatencyHSPA+ and LTE Drive High Data Rate Capability
Note: Data rates shown are Peak per BTS sector – Not Achieved Uniformly In Practice
3G W-CDMA
Slide 24Confidential Cambridge Broadband Networks Ltd.
LTE Data Rates – What is Real – LTE Trial Data Says:
LTE Trial Initiative (LSTI) Data validates 150Mb/sec peak with 2X2 MIMO LTE SystemBut in the real world….1) There will be some level of interference from other cells2) The user will not always be close to the base station3) Cell throughput will be shared amongst several usersFor 10 users LSTI trial data concludes average throughput of 3Mb/s, cell edge 1Mb/s
1 user can obta
in Peak
rate near the BTS
Backhaul demands for LTE cell will vary between 30 Mb/s 150Mb/s
Slide 25Confidential Cambridge Broadband Networks Ltd.
Each Point-to-Point link needs individual planning. Cellsite links must be provisioned for peak traffic. LTE data rates put pressure on Spectrum requirements.
Site 3
Hub Site 1
Site 2
Point to Point requires traffic and bandwidth planning for each link
Site 5
Site 6
Site 4
Point-to-Point microwave networks require multiple aggregation points requiring additional hardware to manage the traffic from multiple links
Slide 26Confidential Cambridge Broadband Networks Ltd.
RNC-or-
BTS
Ethernet- or -SDH
Step 2: Each sector is an aggregation section using statistical multiplexingTraffic is aggregated over the air without additional hardware or complexity
Step 3: PMP base station acts as second, multi-sector aggregation pointExample: statistical multiplexing of multiple sectors further reduces bandwidth demand at the core network interface
Point to Multipoint reduces complexity; significantly improves efficiency
Step 1:Peak bandwidth is available to each cell site in the sector. Spectrum is shared in the sector reducing planning, eliminating wasteCapacity in the sector is dynamically allocated as required
Step 4: Transport capacity was saved by carrying aggregated traffic
Point to Multipoint simplifies mobile backhaul
Slide 27Confidential Cambridge Broadband Networks Ltd.
Statistical multiplexing and aggregation over the air
Traffic measurements from 4 Node Bs on HSDPA network
Point-to-Point backhaul provisioning would have to plan for peaks, i.e. 3 x E1 per NodeB: 3 x 2.048Mbps = 6.144Mbps per NodeB
4 x 6.144Mbps = 24.576Mbps
Up to 5x increase in available capacity
VectaStar stat-mux of optimised E1 traffic reduces peak backhaul requirement from 24.5Mbps down to 8Mbps
VectaStar PMP backhaul is highly suited to Node Bs with bursty traffic offering up to:
6Mbps
6Mbps
6Mbps
6Mbps
8Mbps
Slide 28Confidential Cambridge Broadband Networks Ltd.
Coverage – Flexibility
VectaStar is cost effective for new and overlay backhaul networks
Site a VectaStar PMP Ethernet Hub where there is a need to provide backhaul coverage
Add sectors as demand increasesHub economics enable variable sector sizes/capacitiesNew sites require one radio – deployment time halvedSingle platform handles high density and high traffic sites
Slide 29Confidential Cambridge Broadband Networks Ltd.
Clearly the next generation in microwave backhaul
LTE PMP Backhaul solution for London:•145 Cell sites•8 Hub sites•150Mb/s Peak•30Mb/s Mean
Utilises overlapping sectors to increase capacity in dense, high traffic areas
Slide 30Confidential Cambridge Broadband Networks Ltd.
Point to Multipoint microwave backhaul
costs lesshigh performance
reduces complexity
Slide 31Confidential Cambridge Broadband Networks Ltd.
Summary
Point to Multipoint is the lowest cost way to build dense microwave backhaul networks
On some vendors systems – the benefits become evident from 3 links onwards
Point to Multipoint delivers significant statistical multiplexing gainsIt is ideally suited for handling the nature of packet data traffic
Significant spectrum efficiency gainsTypically, PMP uses 50% less spectrum to cover a geographical area28MHz of microwave carrier bandwidth is utilised by many assets – not just one
Point to Multipoint reduces backhaul network complexity and planningNew zero-footprint vision is a paradigm shift in microwave network planning
Point to Multipoint delivers performance for today with capacity for tomorrow
