Chapter
Two: Understanding Telecommunication Network Trends
The origins of the mobile communications industry date from
the licensing of analogue cellular communications services in the early 1980s.
As recently as 1990, there were only 11 million subscribers worldwide, but the
introduction of digital services in the early 1990s, combined with competitive
service provision and a shift to prepaid billing, spurred rapid growth in
demand. At the end of 2003, there were over 1.35 billion mobile subscribers
worldwide, compared with 1.2 billion fixed-line users (see Section 2.7).
The origins of the Internet go back to 1969, but it was in
the early 1990s, with the development of the World Wide Web and graphical
browsers, that the Internet really took off as a commercial undertaking. By the
end of 2001, the Internet had passed the half billion user mark. Although the
“dot.com” boom of the late 1990s proved to be short-lived, the Internet itself
has continued to grow, adding more users and new applications.
As Figure
2.1 shows, the mobile and Internet industries have exhibited remarkably similar
growth patterns since the start of the 1990s, but with a lag of about two
years. The level of penetration of the Internet at the end of 2001 (8.2 users
for every 100 inhabitants, worldwide) is almost identical to the penetration of
mobile phones at the end of 1999. This two year lag might be explained by the
fact that the formative moments in the growth of these industries occurred just
under two years apart: digital cellphones were launched commercially on 1 July
1991 (by Radiolinja, in Finland), while graphical web browsers were launched
commercially in April 1993.
Major stages in the technological development of mobile
telecommunications are commonly described in terms of “generations”.
“First-generation” (1G) mobile technology refers to the analogue cellular
systems that first appeared in the late 1970s and early 1980s. This phase of
development was characterized by a wide range of different systems, many of
which became popular in one or two countries only. “Second generation” (2G)
technology refers to today’s digital cellular systems (first deployed at the
start of the 1990s), such as GSM (Global System for Mobile Communications), PDC
(personal digital communications), TDMA (time division multiple access), and
CDMA (code division multiple access).
While 2G networks were developed under a number of
proprietary, regional and national standards, “third-generation systems (3G),
were developed from the outset on the global stage, during the 1990s, under the
leadership of the International Telecommunication Union (ITU) under the
IMT-2000 (International Mobile
Telecommunications) banner. Much effort has gone into the development of
a single interoperable global standard for 3G systems, in order to avoid the
market fragmentation that had very much characterized the 1G and 2G worlds.
It was in the mid-1980s that ITU began its work on IMT-2000.
ITU’s 1992 World Radio Conference (WRC) identified the 2 GHz band for the
global deployment of IMT-2000. Eight years later, the 2000 WRC allocated
additional spectrum for 3G services in three frequency bands: one below 1 GHz,
another at 1.7 GHz (where many second-generation systems currently
operate) and a third band in the 2.5 GHz range.
This effectively gave a green light to the mobile industry
worldwide to start deploying IMT-2000 networks and services. Many economies,
such as Australia, Hong Kong, China, and most European countries, have
allocated spectrum for 3G, although, still in 2004, few services have been made
commercially available. The countries that have begun deploying 3G services
include Brazil, Canada, Japan, the Republic of Korea, the United States and the
United Kingdom.
Despite concerted global efforts at standardization, there
remain different approaches to 3G technology. The major industrialized
economies were unable to agree on a single standard. The result was an IMT-2000
standard with a number of “flavours”, that is to say five possible radio
interfaces based on three different access technologies (FDMA, TDMA and CDMA).
Thus far, the vast majority of industry attention has been directed towards the
CDMA technology, and in particular Wideband CDMA or W-CDMA (known in Europe as
UMTS) and CDMA2000 (including CDMA2000 1x). Thus far, national licence
allocation has been limited to these two radio technologies, although China is
licensing a third technology, TDSCDMA.
The Internet has also been under significant transformation,
particularly since the early 1990s. Fifteen years ago, prior to the Web, the
Internet was primarily focused on academic and research use, was primarily
North American-based, not for profit, and used mostly for e-mail and file
transfer. With the invention of the World Wide Web in Geneva at CERN[1] in the early 1990’s, the Internet became accessible to a
much wider range of users. During the early and mid-1990’s there was
significant growth throughout OECD countries and increasing privatization of
its backbone. The mid- to late-1990’s witnessed the rise and fall of “dot.com”
mania and with it the belief that the Internet was a suitable platform to
subsume all existing telecommunication networks and services.
Despite the boom and bust (which is surprisingly common with
most new communication technologies),[2] digital convergence will continue,
albeit not as fast as many of us had imagined. For example, there is ongoing
standardization to provide integration and interoperability of IP-based and
PSTN network services and applications. The telephone
network (both fixed and mobile) and the Internet are likely to converge into
what some people refer to as “next generation networks” or “NGN”. The NGN is characterized by the following fundamental
characteristics:[3]
-
Packet-based transfer;
-
Separation of control functions among bearer
capabilities, call/session, and application/ service;
-
Decoupling of service provision from network, and
provision of open interfaces;
-
Support for a wide range of services, applications and
mechanisms based on service building blocks (including real time/ streaming/ non-real
time services and multi-media);
-
Broadband capabilities with end-to-end QoS and
transparency;
-
Interworking with legacy networks via open interfaces;
-
Generalized mobility;
-
Unrestricted access by users to different service
providers;
-
A variety of identification schemes which can be
resolved to IP addresses for the purposes of routing in IP networks;
-
Unified service characteristics for the same service as
perceived by the user;
-
Converged services between fixed/mobile;
-
Independence of service-related functions from
underlying transport technologies;
-
Compliant with national regulatory requirements, for
example concerning emergency communications, security and privacy.
When ITU started publishing statistical indicator reports on the
development of telecommunications in different regions of the world in 1993,
Asia-Pacific accounted for just one-quarter of the world’s fixed telephone
lines and around one-sixth of mobile users. In last few years, the region has
emerged as the world’s largest telecommunication market (see Figure 2.2). It is
also the only region to have increased its market share significantly, adding
more than one new telephone user every second for the last decade.
The Asia-Pacific region now has the largest share of Internet and mobile
users as well as leading in advanced Internet technologies such as broadband
access and mobile data. The Republic of Korea and Hong Kong, China, are the top
two economies in the world in terms of broadband Internet penetration. In
mobile Internet technologies, Japan and the Republic of Korea were the first
two nations to launch third-generation cellular networks commercially. These
exploits combined with a large potential for growth based on population
demographics corroborate the view that the global telecommunications epicentre
has shifted from North America and Western Europe to the Asia-Pacific region.
Figure 2.2 also demonstrates that Africa
still very much lags the rest of the world in both mobile and Internet penetration.
Large disparities in access to the Internet exist, particularly for developing
countries. One widely recognized reason
for this is the high costs of international circuits for Internet connectivity
between least developed countries and Internet backbone networks. A number of
initiatives are under way to address this problem. These include consideration
of new models for financial exchanges among operators as well as efforts to
facilitate the creation of traffic aggregation within localities, countries or
regions in developing countries in order to avoid the sending of this traffic
over satellite or cable links used for intercontinental traffic—for example
between Africa and Europe or North America. The latter would aim to maximise
the retention of local and national traffic within these regions and thus
reduce the dependence on international communications links. To give a sense of
the scale of the problem, over 75 per cent of Internet traffic in Europe
remains intra-regional compared with only 1 per cent in regions like Africa
(see Figure 2.3). ITU’s Telecommunication Standardization Sector Study Group 3
(see Section 4.9)
and ITU Telecommunication Development Sector (see Chapter Five) are particularly active in
exploring solutions.
The year 2002 marked an historic turning
point in the history of telephony, for it was the year when mobile subscribers
overtook fixed-line subscribers worldwide (see Figure 2.4).[4] The rise
of mobile telephony to overtake fixed lines has brought with it many
implications, but perhaps the most significant impact is on access, both to
basic telecommunication services, and to information and communication
technologies (ICT), as a tool for economic and social development. This is
partly because cellular networks can be built faster than fixed-line networks
and can cover geographically challenging areas. Mobile services have served to
boost competition, and prepaid models have opened access to mobile cellular for
those who would otherwise not qualify for telephone subscription plans.
In countries where mobile communications
constitute the primary form of access, increased exchange of information on
trade or health services is contributing to development goals; in countries
where people commonly use both fixed-line and mobile communications, the
personalized traits of the mobile phone are changing social interaction.
Increasingly, mobile is not only overtaking
fixed, but also substituting for it: in such cases, users have a mobile phone
only and have no fixed-line subscription. In developed countries, this may be
through choice. In developing ones, it may be the only possibility for
individuals to have their own phone. This has created a whole new set of
paradigms for users, regulators and providers alike. It is important to note
that while there may be a similar percentage of mobile-only users in countries
as diverse as, for example, Finland and Uganda, the reasons for this are very
different and so are the implications.
As most of the legislative foundations of
today’s telecom regulatory frameworks were articulated and predicated on the
concept of increasing basic fixed line telephony density and dealing with
incumbent monopolies, the growth of mobile has significant impact on policy and
regulation outlooks. Issues include of the areas of spectrum and numbering
management, universal service policies, competition policy and interconnection
for mobile communications, international roaming, pricing and billing models,
privacy, and consumer and data protection.
Source: ITU World Telecommunication
Development Report, 2002.
It requires no great leap of the imagination
to believe that the convergence of mobile communications and the Internet will
produce something big, perhaps even the mythical “sum that is bigger than its
parts”. If this view is accepted, the convergence of mobile communications and
the Internet (as well as with RFID type technologies – see Section 2.9) is likely to produce major innovations.
The major Asian economies are the clear first
movers, with Japan and Korea being the first to actually deploy mobile Internet
services (see Figure 2.5). Although the experience of Japan and Korea would
suggest the huge potential of the mobile Internet, the high hopes for 3G have
been somewhat dampened by the slump of recent years in the telecommunication
sector as a whole, as well as evidence that some mobile markets are reaching
saturation. Many operators in countries that have yet to initiate 3G
deployments are taking a more gradual or cautious approach, concentrating their
efforts on new multimedia-type applications over existing 2G platforms. Many
are choosing to upgrade their systems to support higher data transmission
speeds needed for images. This approach may be a useful way to “test the
waters” for 3G, or to exploit more fully the potential of 2.5G technologies
without the need to invest heavily in new 3G networks.
Source: ITU, Asia Pacific Telecom
Indicators 2002.
The next trend over the horizon beyond mobile
Internet is called “ubiquitous networking” or “pervasive
networks”. This involves the use of radio frequency identification (RFID) technologies
and their integration with other information and communications technologies,
which has dramatically accelerated in the last few years with rapid reductions
in microchip size and cost. This portents the possibility of a new totally new
class of computing and communications recognized in the national IT strategies
of Japan and Korea; two clear conceptual leaders in the field.
This development, aided by rapid advances in
antennae technologies, will enable tiny microchips to be implanted in physical
objects and from these conditions in the real world to be perceived, including
the ability to detect a diverse range of real world information such as, inter
alia, the identity of a person, current location, temperature and humidity
levels, when and by whom a product was made. Some suggest this is a new
revolution, which might be called the “Internet of things”. While much
activity, particularly in Europe and the United States, has concentrated on
RFID technologies in the context of product management or a replacement for
Universal Product Codes (the familiar bar codes),[5] the
Asia-Pacific vision of ubiquitous is very much broader. A glimpse of what a
future ubiquitous networking environment might look like is the communications
environment portrayed in the recent film “Minority Report” (albeit a somewhat
negative one).
At the recent ITU TELECOM World 2003,
Professor Ken Sakamura of Tokyo University, widely considered to be one of the
“godfathers” of the concepts behind ubiquitous networking, said that while he
was delighted to see the growing interest in the technology, there were a
significant number of policy and regulatory issues that must be first
addressed. He cited examples of companies with plans to insert RFID tags into
millions of products that they distribute and manage. There has given rise to
increasing concerns about the security, privacy and the societal aspects of
this technology. As an example, at a recent workshop on RFID privacy issues at
the Massachusetts Institute of Technology (MIT) in the United States,[6] a
large number of civic organizations jointly issued a statement[7] of
their deep concerns about the rapid application of RFID chip technology to
consumer products, which they see as a potential invasion of privacy.
In 2002, wireless
LAN technology became a bright spot in the beleaguered telecommunication
market. Wireless LANs can effectively be used to share Internet access from a
broadband connection over 100 metres, although they are also being used
increasingly as methods of providing broadband access over longer distances in
rural areas. This is accomplished by increasing power levels of the equipment,
using specialized antennae, and ensuring line-of-sight access. Of all WLAN
technologies, the most popular and widely known is IEEE 802.11b, commonly
referred to as “Wi-Fi”.
Several factors have
contributed to what is becoming the phenomenal growth of wireless LANs: a steep
drop in prices, the mobility benefits of wireless connectivity, off-the-shelf
availability, and easy installation. The combination of inexpensive equipment
and easy installation has also made wireless LANs particularly attractive for
rural connectivity. Many projects around the world are looking for ways to use
wireless LAN technology to bridge the last mile. The ITU Telecommunications
Development Sector (see Chapter five), to cite just one example, is in the
process of implementing three pilot projects to determine the performance of
WLANs for provision of community access for rural areas of Bulgaria, Uganda and
Yemen. Wireless LAN is also being
rolled out in many rural areas of other developed economies.
One fast-growing use
of WLANs is the provision of wireless hotspots in public areas such as
airports, conference halls, and cafés, offering high-speed wireless Internet
connections to users. Beyond the “hotspot” concept, several businesses are even
looking into ambitious plans to develop a patchwork network of wireless LAN
connections across entire countries. Zamora, a Spanish town with a population
of 65 000, already boasts 75 per cent Wi-Fi coverage.
The IEEE also
recently standardized 802.16, commonly known as WiMAX, as a new fixed-wireless
standard that uses a point-to-multipoint architecture. The initial version
(802.16) was developed to meet the requirements for broadband wireless access
systems operating between 10 and 66 GHz. A recent amendment (802.16a) does the
same for systems operating between 2 and 11 GHz. WiMAX equipment should be able
to transmit between 32-56 km with maximum data rates close to 70 Mbit/s.
While other fixed
wireless technologies have had great difficulty with interoperability, the
WiMAX technical working group is seeking to replicate the success of Wi-Fi by
following its development and certification processes. First, the WiMAX working
group included leading companies in many industries whose clout in their
individual markets would help promote a common standard.[8] Second, the WiMAX Forum is similar to the
very successful Wi-Fi forum which offers a “stamp of approval” that equipment
will interoperate with other certified products, further helping to create a
single common standard.[9]
Another technology
is emerging that promises to provide a unifying platform for three converging
industrial sectors: computing, communications and broadcasting. That technology
is “broadband”. Because of the nature of broadband (you have to use it to
understand the benefits it offers), market take-off typically requires a
critical mass of users. Currently, around one in every ten Internet subscribers
worldwide has a dedicated broadband connection (see Figure 2.6, top chart),
though many more share the benefits of high-speed Internet access, for
instance, through a local area network (LAN), at work or at school. The world
leader for broadband is the Republic of Korea (Figure 2.6, lower chart), which
is around three years ahead of the global average in terms of converting
Internet users to broadband. There, a critical mass was attained as early as
2000, when prices fell below USD 25 per month; from which point onwards
take-off was rapid (see Figure 2.6, bottom chart). Currently, over 93 per cent
of Internet subscribers in Korea use broadband.
Around the world,
there were around 63 million “broadband” subscribers at the start of 2003
compared with 1.13 billion fixed-line users and 1.16 billion mobile phone
users. Broadband users enjoy a range of service speeds from 256 kbit/s up to
100 Mbit/s. The number of subscribers is growing rapidly, with a 72 per
cent increase during 2002. Digital subscriber line (DSL) is currently the most
commonly deployed platform, followed by cable modems, Ethernet local area
networks (LAN), fixed-wireless access, wireless LANs (WLAN), satellite and
other technologies. The overwhelming majority of today’s users are in the
developed world. However, even among the 30 member countries of the
Organisation for Economic Co-operation and Development (OECD), there remain
large disparities, not only in service availability but also in terms of
quality of access and price per Mbit/s. In developing countries, as broadband
becomes cheaper, and wireless technologies evolve, broadband adoption may help
countries to “leapfrog” traditional telephony technologies, as already has been
proven in a number of development initiatives.
Chapter Seven: Case Study—How ITU’s Broadband
Standards Improve Access to the Internet provides a practical example of how ITU
standards for broadband are improving access to the Internet, in particular,
using digital subscriber line (DSL) and cable modem technologies.
Source: ITU World Telecommunication Indicators Database.
A vast majority of countries
worldwide have reformed, or are in the process of reforming, their
telecommunication sectors through the review and adoption of new legislation to
adapt to the rapidly changing communication environment. They have done so by
opening some market segments, if not all, to competition, allowing private
participation, and establishing a national regulatory authority. As of
mid-2003, 123 countries worldwide recognized the importance of establishing a
regulatory authority to foster competition in the information and communication
(ICT) sectors in a fair and transparent fashion. As the development of ICTs is
making the convergence of different types of network platforms and services a
reality, more and more countries are responding either by merging their
telecommunication and broadcasting regulatory authorities or improving
coordination between various agencies involved in the ICT sector. Additional
functions and tasks are required from regulators as a result of convergence,
liberalization and market growth, including dispute resolution and consumer
protection. At the same time, regional initiatives are taking place worldwide
to harmonize national ICT legislative frameworks and work together toward the
ultimate goal of providing universal access if not universal service to all
citizens of the world.
This liberalization
of telecommunication markets through the introduction of competition is also
changing the way countries approach universal access and service policies. This
is due, in part, to the fact that services are being provisioned at a more
rapid pace, prices are falling and new and innovative services are being
introduced.
Today a robust national telecommunication infrastructure
has become much more important than a platform for voice: it is the fundamental
underpinning layer of networked economies and information societies. As a
result, the development of advanced ICT networks is now a key policy objective
for most governments around the world. Not only are these networks seen as an
important determinant of national competitiveness in an increasingly globalized
knowledge economy, they are also seen as offering new opportunities in areas
such as education, health and social advancement.
All policy-makers and regulators, both established
and new, are struggling to address changes resulting from convergence of the
information and communication (ICT) sectors. One result is a serious re‑examination
of existing regulatory models and new approaches to convergence regulation. For
example, the European Union’s new telecommunication regulatory framework,
adopted in March 2002, represents an attempt to move away from
technology-specific and service-specific legislation. It attempts to
proactively address convergence regulation issues by focusing more on market
definitions related to competition law rather than embedding
technology-specific definitions in legislation. It will be an interesting model
to watch evolve as it is implemented by EU member states and tested by
real-world issues.
Those familiar with
the history of telecommunications know that predicting the future is
notoriously difficult: technologies take time to mature and business models
take time to evolve. For example, Alexander Graham Bell originally thought the
telephone would be used for broadcasting. The reality is that it took over
thirty years to find the “killer application” for the telephone:
person-to-person communications.
We also forget that
history tends to repeat itself. The invention of the telegraph was perceived,
in many ways, as far more of a revolution than the Internet was during the last
10-15 years. Although it is hard to believe now, it was a technology that
gripped the imagination of the mid-19th century. That’s because for
the first time in history, a communication means was available that was
divorced from physical transportation. Exchanging messages suddenly took
minutes instead of months. It was an invention that was described in the same
glowing terms as the Internet: it was the “annihilation of space and time”.[10] And it had to be built from scratch. While
the Internet was essentially built on top of the global telephone network
infrastructure, the physical infrastructure for the telegraph was built from
nothing. This required massive business investments and there were a great
number of technical and business failures along the way. One example is
demonstrated by the early days of submarine cables. According to one historian:
“Of the 17 700 kilometers of cable laid by 1861, only 4 800 worked
and the rest were lost”. However, eventually the problems were solved and 20
years later, about 150 000 kilometers of submarine telegraph cables were
in place and working.
Mobile
communications and the Internet were the two major demand drivers for
telecommunication services in the last decade of the twentieth century.
Combining the two—mobile Internet—and this may suggest the major demand driver
of the first decades of the twenty-first century. It is easy to envision a migration of
traditional PSTNs to combined mobile and IP-based networks, and the potential
integration of telecommunications, broadcasting, publishing and other media
functions into these networks. This view suggests a future in which past
divisions between “vertical” network structures would progressively be
transformed into “horizontal” divisions between different network layers; in
which everything ultimately would be connected through mobile broadband
ubiquitous networks.
[4] At the end of 2003, the ITU estimated that there were over 1.35
billion mobile subscribers worldwide, compared with only 1.2 billion fixed-line
users. A recent workshop examined the social and human considerations relating
to the rapid development of mobile technology. See http://www.itu.int/osg/spu/ni/futuremobile/index.html.
[9] The ITU recently approved Sector Membership for the IEEE in its
Radiocommunication Sector (ITU-R) which means that the IEEE can be a direct
contributor to standards and other documents developed by ITU‑R.
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