Broadband strategy

Mobile Broadband Strategy,
T-Mobile Macedonia’s perspective
Viktor Nastev
NT Development & Strategy Director, TMMK

8th SEEITA – 7th SEE ICT Forum Meeting & 7th MASIT Open Days Conference
14-15 October 2010, Ohrid www.seeita.org

Mobile Broadband; WHY ???
New services, new applications, new clients, new networking technologies and
new forms of communication, such as peer-to-peer, and media/content-to-
person are key drivers for implementation of Mobile broadband.
Data utilization is quickly increasing on smartphones and laptops. In addition,
newer mobile devices such as Mobile Internet Devices and mobile consumer
electronics devices are starting to appear, which further drive up data traffic on
mobile wireless networks.
Mobile broadband network technology has many aspects, e.g. users, politics,
regulations, financing, and there are many parties involved, e.g. operators,
network builders, IT developers, device makers.
In such a complex case, it is pragmatic to assume that in the coming 5 to 10
years there will be a need for a number of mobile broadband services, and that
it is necessary to start specifying and building the network technology that will
enable and exploit these services.


Mobile DATA Services “T-Mobile MK perspective”
– T–Mobile recognized the need of mobile data and started to build its
mobile data core network.

– Mobile Data services in T-Mobile network were implemented in 2003, as
basic R99 GPRS implementation. At that time CS1 and CS2 coding
schemes were introduced enabling data speeds of 35 – 50 kbps DL
and 20 – 25 kbps UL.

– Recognizing the need for greater data throughput and lower latency T-
Mobile started implementing EDGE in its 2G network from 2005 and is
constantly increasing its EDGE capable BTS’s in order to enable as wider
EDGE coverage as possible. Implementation of EDGE in GSM network
requires replacement of old with new HW in BTS and by using 8PSK
modulation offers speeds of 100 – 200 kbps in DL and 50 – 100 kbps
in UL.



– Recognizing the need for mobile broadband T- Mobile MK started
searching for adequate solution.

– In parallel with implementing of EDGE in the T-Mobile network, process
for finding of suitable wireless broadband technology has started. Several
trial tests with WiMAX technology were conducted during 2005 and
several other broadband alternatives were analyzed in order to acquire
and offer best broadband technology that can serve costumers needs.

– As a normal evolution step from GSM/EDGE towards broadband services
WCDMA as a leading technology has been chosen.


– Considering the acquisition of 3G (WCDMA) frequencies T-Mobile started
building its 3G network in order to provide as wider 3G coverage as
possible and as much capacity as possible, not just to cover the license
requirements but to offer good quality and 3G signal to all of its
costumers.

– Implementation of 3G wireless technology is not solely related to new
RADIO implementation, never the less it needs consolidation in operators
core network and transmission network as well.

– Considering the fact that in 2009 speaking of 3G network that has
already reached its maturity and having in mind the volume of traffic and
data speed demanded by mobile subscribers pushed T-Mobile to start
immediately with implementation of (3.5G) network with HSPA support of
7,2 Mbps DL and 2.0 Mbps UL which will be followed in short time by
upgrade to speeds of 14.4 Mbps DL and 5,8 Mbps UL.


UMTS Evolution in larger context
– Implementation of new radio technology (WCDMA) in context of 3G
network needs changes in the providers core network as well. First step
in this change is moving from monolithic architecture towards split
architecture in Circuit Switch core. Example of 3GPP release 4
architecture is presented on the picture bellow.


UMTS Evolution in larger context
– Increasing the speed of always ‚hungry for bandwidth‛ applications played
by the end user, must be followed by reducing the latency of data traffic,
especially if service provider aims to introduce first class real time
services. Providing appropriate packet architecture that can cope with this
requirements is in constant scope of interest of 3GPP.

– Changes in radio access technologies in order to provide space for grater
bandwidth and lower latency are usually followed by changes in the core
architecture, as well as in transport network. Considering the fact that IP
is playing major role in communication industry especially having in mind
that all network based services and application are IP based its
introducing in UTMS networks from end to end (from terminal to
terminal thru core network) is crucial for providing needed service quality
.


Mobile broadband impact on Packet Core Network
GGSN SAE
GW
IP

SGSN
Layer 3 IP MME

IP IP

Drift
RNC Enhanced
Node B

Node B

Direct I-HSPA+ SAE/LTE
Today
tunnel Direct tunnel
3GPP/WCDMA Evolution


Mobile Broadband impact on Transmission Network
E1 Based Transport
ATM IMA over n*E1
RNC

Node B

Split Architecture:
-R99 Traffic over E1
-HSPA Traffic over xDSL/Metro Ethernet

NodeB RNC
E1 E1
PDH / SDH

FE
Metro E / DSL over MPLS GE

All IP - Architecture
NodeB RNC
FE GE
Metro E/DSL over MPLS


What is LTE ???
– Long Term Evolution (LTE) describes standardization work by the Third
Generation Partnership Project (3GPP) to define a new high-speed radio
access method for mobile communications systems.

– LTE is the next step on a clearly-charted roadmap to so-called ‘4G’
mobile systems that starts with today’s 2G and 3G networks. Building on
the technical foundations of the 3GPP family of cellular systems that
embraces GSM, GPRS and EDGE as well as WCDMA and now HSPA
(High Speed Packet Access), LTE offers a smooth evolutionary path to
higher speeds and lower latency.

Choice of upgrade path

What is LTE ???
– In parallel with its advanced new radio interface, realizing the full potential
of LTE requires an evolution from today’s hybrid packet/circuit switched
networks to a simplified, all-IP (Internet Protocol) environment. From an
operator’s point of view, the pay-off is reduced delivery costs for rich,
blended applications combining voice, video and data services plus
simplified interworking with other fixed and wireless networks.
– By creating new value-added service possibilities, LTE promises long-term
revenue stability and growth for around two hundred mobile operators that
are already firmly committed to the UMTS/HSPA family of 3G systems.
Just as importantly, it provides a powerful tool to attract customers who
are provided with an increasing number of technology options for
broadband connectivity on the move.
– Based on the UMTS/HSPA family of standards, LTE will enhance the
capabilities of current cellular network technologies to satisfy the needs of
a highly demanding customer accustomed to fixed broadband services. As
such, it unifies the voice-oriented environment of today’s mobile networks
with the data-centric service possibilities of the fixed Internet.


LTE Key Features
– From a technical point of view, a fundamental objective of the LTE project is to
offer higher data speeds, for both down- and uplink transmission. Apart from
this increase in raw data rates, LTE is characterized by reduced packet latency;
the restriction that determines the responsiveness of gaming, VoIP,
videoconferencing and other real-time services.
– From an operator’s perspective, the flexible channel bandwidths and harmonized
FDD/TDD modes of LTE provide a more efficient use of carriers’ existing and
future spectrum resources. LTE also provides a more robust platform for
operators to offer compelling value-added services in the mobile domain.
– High spectral efficiency: LTE’s greater spectral efficiency allows operators to
support increased numbers of customers within their existing and future spectrum
allocations, with a reduced cost of delivery per bit.
– Flexible radio planning: LTE can deliver optimum performance in a cell size of
up to 5 km. It is still capable of delivering effective performance in cell sizes of
up to 30 km radius, with more limited performance available in cell sizes up to
100 km radius.


LTE Key Features

– Reduced latency: By reducing round-trip times to 10ms or even less
(compared with 40–50ms for HSPA), LTE delivers a more responsive user
experience. This permits interactive, real-time services such as high-quality
audio/videoconferencing and multi-player gaming.
– An all-IP environment: One of the most significant features of LTE is its transition to
a ‘flat’, all-IP based core network with a simplified architecture and open interfaces.
Indeed, much of 3GPP’s standardization work targets the conversion of existing core
network architecture to an all-IP system. Within 3GPP, this initiative has been
referred to as Systems Architecture Evolution (SAE)
– Spectral Flexibility Means Wider Deployment Options


LTE Time Scale
– A number of companies have already demonstrated various elements at public
events. With 3GPP Release 8 now being consolidated, many industry players
and observers anticipate the commercial launch of the first LTE networks and
terminal devices in 2010. Several operators have already started the commercial
LTE networks with few operators planning to start commercial 4G networks in
the next months.

– There is widespread industry consensus that operator’s revenues from LTE will
gradually replace those generated by WCDMA and HSPA. By way of example, a
study by ABI Research suggests that LTE will dominate the world's mobile
infrastructure markets after 2011.


Challenges facing the Mobile Broadband Strategy

– Price of spectrum and licensees

– Spectrum reframing (Possibility to offer different radio technology on the
spectrum defined for certain technology)

– Change in Transmission backhaul, introducing all-IP concept increasing the
bandwidth

– Site acquisitions – Procedures, Legal issues, Permits for conducting of
civil work etc.

– Need for Public – Private partnership with the Government in order to
move forward and offer broadband to every customers in Macedonia


Broadband strategy

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