Alcatel-Lucent 9500 MPR Brochure page 4

The Need for IP Transformation
The growing demand for new
broadband services requires more
connectivity and additional ports at
cell sites. Packet traffic growth from
these new broadband services drives
bandwidth requirements higher —
up to 20 Mb/s to 30 Mb/s per cell site.
This increase is driven by packet traffic
rather than voice traffic, so capacity
and quality constraints are different.
As mobile network infrastructure
evolves, IP-native base stations will
have Ethernet interfaces rather than
E1 or T1. This change in physical
interfaces brings new challenges to
backhaul networks; and because the
transition will not happen overnight,
backhaul networks must migrate
gracefully while supporting a mixed
payload of legacy TDM and growing
packet traffic.
IP TRAnSFoRMATIon DRIvERS
• The need for additional
connectivity (ports) to
introduce new broadband
technologies and services
(HSDPA, EV-DO, Wi-Fi
hotspots, WiMAX)
• Increased bandwidth
requirements for new packet-
based services (20 Mb/s to 30
Mb/s per cell site)
• Physical interface changes
(Ethernet base stations) which
avoid the need for separate
overlay networks to support
Ethernet connectivity and
backhaul
4 Alcatel-Lucent 9500 MPR – Microwave Packet Radio
The evolution of microwave radio from TDM to packet
technologies enables data–aware transport — which can
support new high–bandwidth services while leveraging
existing technologies. IP transformation typically seeks
to achieve four major goals:
• Gradual transformation of the network — focusing
on areas where compelling events force investment
in a solution
• Return on these investments in less than two years,
as a result of OPEX savings
• Minimized OPEX, despite capacity increases —
which requires optimizing the use of scarce
resources and aggregating all services over a
single pipe, with no overlays
• Use of a multi-vendor model, with standard protocols
and no proprietary equipment
Figure 2. Traffic and Revenue Evolution with a Massive Introduction of
Broadband Services. Data traffic is growing fast but revenues are not
increasing at the same pace. You need more efficient ways to transport
the additional packet traffic generated by broadband services.
Voice Era
Packet
Traffic
Data Era
Traffic and
Revenue
Divergence
Revenues
Time