HSPDA Trend

The volume of IP-based traffic has already exceeded that for circuitswitched traffi c in most fixed networks. The same change will happen in mobile networks as new IP-based mobile services become available and are used by more people in their daily communications.
Current estimates show that, in advanced mobile communication markets, packet-switched traffi c will overtake circuit-switched traffic in the near future. Delivery of digital content over mobile networks as well as IP-based person-to-person communication that combines
different media and services into a single session, will generate additional traffi c and revenue. The growth in data bits used in communications will exceed the growth in revenue, driving
operators to optimize their networks to support the dominant traffic type.

HSDPA, High Speed Downlink Packet Access, offers breakthrough data speeds – up to five times (10 Mbps) higher than is possible in the most advanced 3G networks – as well as
two-fold base station capacity. For end-users this means shorter service response times and less delay.

Meanwhile, operators will be able to offer advanced services at lower costs and with increased profitability. As the Nokia HSDPA solution is fully backwards compatible with current
Nokia WCDMA networks, it is a costeffective way to upgrade existing infrastructure. By providing higher quality and capacity it will help to drive up the consumption of dataintensive
services, bringing operators more revenue. HSDPA offers by far the highest performance at the lowest cost, enabling real mass-market mobile IP multimedia. HSDPA is based on WCDMA evolution, standardized as part of 3GPP Release 5 WCDMA specifi cations. The new
modulation method of HSDPA greatly improves the peak data rate and throughput, which enhances spectral effi ciency. In addition to these benefits, users will perceive faster connections
to services through shorter round trip times.

As a result of these enhancements, operators using HSDPA will be able to support considerably higher numbers of high data rate users on a single radio carrier than is possible with any
existing 3G technology.