24-11-2012, 06:20 PM
Introduction of 4G Activities in Korea
[attachment=41104]
Abstract
In Korea, the development of 4G mobile system
technologies is very actively carried on. The activities of 4G
development in Korea will be introduced in this paper. In the
first part, the current status of preparing the commercial WiBro
service will be presented. The WiBro Service (Portable Internet
Service for 2.3GHz), as the low mobility data service, has been
defined as a pre-4G service and the development of the system
for 30 ~ 50Mbps is on the way for deploying the commercial
service in 2006. In the second part, the direction of the
technology development for the 4G mobile system will be
introduced. The 4G system will support 100Mbps data rate for
high mobility and 1Gbps for low mobility based on the ITU-R
recommendation. In the last part, various collaborative activities
in Asia area, such as the NGMC forum in Korea and CJK
collaboration, will be introduced in the paper.
INTRODUCTION
Korea is one of the world's most concentrated markets for
high-speed Internet connections. There are also about
36.6 million mobile phones users, or 75 percent of the
population. Broadband service providers have recently been
hit by slow growth, saturation in the market and weak
consumption caused by an economic downturn that has put
the emphasis on the need for new services. We hope the
WiBro service would create a new source of revenue for the
country's saturated fixed-line and mobile telecommunication
markets.
Mobile communications have evolved from the first
generation analog system to the second generation systems
such as code division multiple access (CDMA) [1], [2] and
global system for mobile (GSM). Now the third generation
(3G) International Mobile Telecommunication-2000 (IMT-
2000) has begun to provide a variety of services with almost
the same quality as integrated service digital network (ISDN)
services provided in the wired-network realm. Despite the
delay in the commercialization of IMT-2000 services due to
the worldwide economic recession, the next generation mobile
communications and services are being watched with keen
interest.
THEWIBRO SYSTEM AND ITS SERVICES
The WiBro system, an official name of portable Internet
system in Korea and a stepping stone toward fourthgeneration
mobile communications, is ready to launching its
services in 2006. The WiBro is a homegrown variant standard
of IEEE802.16e which has, apparently, now been folded into
WiMAX so there will be international harmonization. It's
expected to cost about $30 a month for getting Wibro services.
Current portable Internet specification is mainly based on
IEEE802.16 [4] with additionally requests to support TDD
mode and the seamless service over 60 km/h. TDD system has
been proved to provide a good solution for high-speed packet
transmission which has the specific features such as the
discontinuous data transmission and the traffic asymmetry
between uplink and downlink. Due to the spectral efficiency
and the robustness against the inter-symbol interference (ISI)
and multi-path fading, OFDM is also considered as an
effective technique in high speed digital communication
systems. In addition, it is shown that OFDM/TDMA TDD
systems offer good performance [5].
THE HIGH-SPEEDMOBILEMULTIMEDIA (HMM) SYSTEM
It is expected that the standardization for beyond 3G mobile
system will take concrete shape after 2007. Hence the
standardization process for beyond 3G mobile system will be
a de facto standardization process in which a system is
developed and commercialized before standardization.
Therefore, ETRI is developing basic unit core technologies for
beyond 3G mobile system not only for co-existence with the
IMT-2000 system in the high speed packet data market, but
also for taking initiative on standardization and development
of the system.
With related to these activities on standardization and
system development of beyond 3G mobile communications,
ETRI is developing the HMm testbed as a pilot research
testbed for investigating feasibility of the derived next
generation mobile services under the proposed conceptual
reference network architecture shown in figure 3.
R&D ACTIVITIES IN KOREA FOR BEYOND 3GMOBILE
COMMUNICATIONS
1) R&D Strategies for B3G in Korea: Beyond 3G mobile
communications including next generation mobile
communications are being developed in Korea through a
cooperative research work among various organizations
including Electronics and telecommunications Research
Institute (ETRI), universities, mobile service operators, and
domestic manufacturers. This cooperative activity is led by
ETRI with contributions from many participating
organizations and collaborative work via international
partnership. Goals of Korea’s R&D activities on beyond 3G
mobile communications are to take global leadership in
wireless telecommunications, to achieve a 30 percent share of
the world market, and to establish the world’s first Broadband
Convergence Network (BcN) based infrastructure that can
unify wired, wireless and broadcasting systems.
[attachment=41104]
Abstract
In Korea, the development of 4G mobile system
technologies is very actively carried on. The activities of 4G
development in Korea will be introduced in this paper. In the
first part, the current status of preparing the commercial WiBro
service will be presented. The WiBro Service (Portable Internet
Service for 2.3GHz), as the low mobility data service, has been
defined as a pre-4G service and the development of the system
for 30 ~ 50Mbps is on the way for deploying the commercial
service in 2006. In the second part, the direction of the
technology development for the 4G mobile system will be
introduced. The 4G system will support 100Mbps data rate for
high mobility and 1Gbps for low mobility based on the ITU-R
recommendation. In the last part, various collaborative activities
in Asia area, such as the NGMC forum in Korea and CJK
collaboration, will be introduced in the paper.
INTRODUCTION
Korea is one of the world's most concentrated markets for
high-speed Internet connections. There are also about
36.6 million mobile phones users, or 75 percent of the
population. Broadband service providers have recently been
hit by slow growth, saturation in the market and weak
consumption caused by an economic downturn that has put
the emphasis on the need for new services. We hope the
WiBro service would create a new source of revenue for the
country's saturated fixed-line and mobile telecommunication
markets.
Mobile communications have evolved from the first
generation analog system to the second generation systems
such as code division multiple access (CDMA) [1], [2] and
global system for mobile (GSM). Now the third generation
(3G) International Mobile Telecommunication-2000 (IMT-
2000) has begun to provide a variety of services with almost
the same quality as integrated service digital network (ISDN)
services provided in the wired-network realm. Despite the
delay in the commercialization of IMT-2000 services due to
the worldwide economic recession, the next generation mobile
communications and services are being watched with keen
interest.
THEWIBRO SYSTEM AND ITS SERVICES
The WiBro system, an official name of portable Internet
system in Korea and a stepping stone toward fourthgeneration
mobile communications, is ready to launching its
services in 2006. The WiBro is a homegrown variant standard
of IEEE802.16e which has, apparently, now been folded into
WiMAX so there will be international harmonization. It's
expected to cost about $30 a month for getting Wibro services.
Current portable Internet specification is mainly based on
IEEE802.16 [4] with additionally requests to support TDD
mode and the seamless service over 60 km/h. TDD system has
been proved to provide a good solution for high-speed packet
transmission which has the specific features such as the
discontinuous data transmission and the traffic asymmetry
between uplink and downlink. Due to the spectral efficiency
and the robustness against the inter-symbol interference (ISI)
and multi-path fading, OFDM is also considered as an
effective technique in high speed digital communication
systems. In addition, it is shown that OFDM/TDMA TDD
systems offer good performance [5].
THE HIGH-SPEEDMOBILEMULTIMEDIA (HMM) SYSTEM
It is expected that the standardization for beyond 3G mobile
system will take concrete shape after 2007. Hence the
standardization process for beyond 3G mobile system will be
a de facto standardization process in which a system is
developed and commercialized before standardization.
Therefore, ETRI is developing basic unit core technologies for
beyond 3G mobile system not only for co-existence with the
IMT-2000 system in the high speed packet data market, but
also for taking initiative on standardization and development
of the system.
With related to these activities on standardization and
system development of beyond 3G mobile communications,
ETRI is developing the HMm testbed as a pilot research
testbed for investigating feasibility of the derived next
generation mobile services under the proposed conceptual
reference network architecture shown in figure 3.
R&D ACTIVITIES IN KOREA FOR BEYOND 3GMOBILE
COMMUNICATIONS
1) R&D Strategies for B3G in Korea: Beyond 3G mobile
communications including next generation mobile
communications are being developed in Korea through a
cooperative research work among various organizations
including Electronics and telecommunications Research
Institute (ETRI), universities, mobile service operators, and
domestic manufacturers. This cooperative activity is led by
ETRI with contributions from many participating
organizations and collaborative work via international
partnership. Goals of Korea’s R&D activities on beyond 3G
mobile communications are to take global leadership in
wireless telecommunications, to achieve a 30 percent share of
the world market, and to establish the world’s first Broadband
Convergence Network (BcN) based infrastructure that can
unify wired, wireless and broadcasting systems.