mansoor2
2008-10-05, 08:52 AM
<a style="color: Red; font-family: Arial;" href="mailto:digitronics@fsmail.net"></a><a href="mailto:digitronics@fsmail.net">WiBro (Wireless Broadband) is a </a><a title="Wireless broadband" href="http://en.wikipedia.org/wiki/Wireless_broadband">wireless broadband</a> <a title="Internet" href="http://en.wikipedia.org/wiki/Internet">Internet</a> technology being developed by the <a title="South Korea" href="http://en.wikipedia.org/wiki/South_Korea">South Korean</a> telecoms industry. WiBro is the South Korean service name for <a title="Institute of Electrical and Electronics Engineers" href="http://en.wikipedia.org/wiki/Institute_of_Electrical_and_Electronics_Engineers">IEEE</a> <a class="mw-redirect" title="802.16e" href="http://en.wikipedia.org/wiki/802.16e">802.16e</a> (mobile <a title="WiMAX" href="http://en.wikipedia.org/wiki/WiMAX">WiMAX</a>) international standard.
WiBro adopts <a title="Duplex (telecommunications)" href="http://en.wikipedia.org/wiki/Duplex_%28telecommunications%29">TDD</a> for duplexing, <a class="mw-redirect" title="OFDMA" href="http://en.wikipedia.org/wiki/OFDMA">OFDMA</a>
for multiple access and 8.75 MHz as a channel bandwidth. WiBro was
devised to overcome the data rate limitation of mobile phones (for
example <a title="Code division multiple access" href="http://en.wikipedia.org/wiki/Code_division_multiple_access">CDMA</a> 1x) and to add mobility to broadband Internet access (for example <a title="Asymmetric Digital Subscriber Line" href="http://en.wikipedia.org/wiki/Asymmetric_Digital_Subscriber_Line">ADSL</a> or <a title="Wireless LAN" href="http://en.wikipedia.org/wiki/Wireless_LAN">Wireless LAN</a>). In February 2002, the Korean government allocated 100 MHz of <a title="Electromagnetic spectrum" href="http://en.wikipedia.org/wiki/Electromagnetic_spectrum">electromagnetic spectrum</a> in the 2.3 - 2.4 GHz band, and in late 2004 WiBro Phase 1 was standardized by the <a title="Telecommunications Technology Association (page does not exist)" class="new" href="http://en.wikipedia.org/w/index.php?title=Telecommunications_Technology_Association&action=edit&redlink=1">TTA</a> of Korea and in late 2005 <a title="International Telecommunication Union" href="http://en.wikipedia.org/wiki/International_Telecommunication_Union">ITU</a> reflected WiBro as <a title="Institute of Electrical and Electronics Engineers" href="http://en.wikipedia.org/wiki/Institute_of_Electrical_and_Electronics_Engineers">IEEE</a> <a class="mw-redirect" title="802.16e" href="http://en.wikipedia.org/wiki/802.16e">802.16e</a> (mobile <a title="WiMAX" href="http://en.wikipedia.org/wiki/WiMAX">WiMAX</a>). Two South Korean Telco (<a title="KT (telecommunication company)" href="http://en.wikipedia.org/wiki/KT_%28telecommunication_company%29">KT</a>, <a title="SK Telecom" href="http://en.wikipedia.org/wiki/SK_Telecom">SKT</a>) launched commercial service in June 2006, and the tariff is around US$30.
WiBro <a title="Base station" href="http://en.wikipedia.org/wiki/Base_station">base stations</a>
will offer an aggregate data throughput of 30 to 50 Mbit/s and cover a
radius of 1-5 km allowing for the use of portable internet usage. In
detail, it will provide mobility for moving devices up to 120 km/h
(74.5 miles/h) compared to Wireless LAN having mobility up to walking
speed and Mobile Phone having mobility up to 250 km/h. From testing
during the APEC Summit in <a title="Busan" href="http://en.wikipedia.org/wiki/Busan">Busan</a> in late 2005, the actual range and bandwidth were quite a bit lower than these numbers. The technology will also offer <a class="mw-redirect" title="Quality of Service" href="http://en.wikipedia.org/wiki/Quality_of_Service">Quality of Service</a>.
The inclusion of QoS allows for WiBro to stream video content and other
loss-sensitive data in a reliable manner. These all appear to be (and
may be) the stronger advantages over the fixed <a title="WiMAX" href="http://en.wikipedia.org/wiki/WiMAX">WiMAX</a>
standard (802.16a). Some Telcos in many countries are trying to
commercialize this Mobile WiMAX (or WiBro). For example, TI (Italia), <a title="Televisão Abril" href="http://en.wikipedia.org/wiki/Televis%C3%A3o_Abril">TVA</a>
(Brazil), Omnivision (Venezuela), PORTUS (Croatia), and Arialink
(Michigan) will provide commercial service after test service around
2006-2007. While WiBro is quite exacting in its requirements from
spectrum use to equipment design, WiMAX leaves much of this up to the
equipment provider while providing enough detail to ensure
interoperability between designs.<br><h2 style="color: Red; font-family: Arial;">Network deployment</span></h2><br style="color: Red; font-family: Arial;"><a title="SK Telecom" href="http://en.wikipedia.org/wiki/SK_Telecom">SK Telecom</a> and <a class="mw-redirect" title="Hanaro Telecom" href="http://en.wikipedia.org/wiki/Hanaro_Telecom">Hanaro Telecom</a> have announced a partnership to roll out WiBro nationwide in Korea, excluding <a title="Seoul" href="http://en.wikipedia.org/wiki/Seoul">Seoul</a> and six provincial cities, where independent networks will be rolled out.
In November 2004, <a class="mw-redirect" title="Intel" href="http://en.wikipedia.org/wiki/Intel">Intel</a> and <a title="LG Electronics" href="http://en.wikipedia.org/wiki/LG_Electronics">LG Electronics</a> executives agreed to ensure compatibility between WiBro and <a title="WiMAX" href="http://en.wikipedia.org/wiki/WiMAX">WiMAX</a> technology.</span>
In September 2005, <a title="Samsung Electronics" href="http://en.wikipedia.org/wiki/Samsung_Electronics">Samsung Electronics</a> signed a deal with <a class="mw-redirect" title="Sprint Nextel Corporation" href="http://en.wikipedia.org/wiki/Sprint_Nextel_Corporation">Sprint Nextel Corporation</a> to provide equipment for a WiBro trial.
In November 2005, <a class="mw-redirect" title="KT Corporation" href="http://en.wikipedia.org/wiki/KT_Corporation">KT Corporation</a>(aka <a class="mw-redirect" title="Korea Telecom" href="http://en.wikipedia.org/wiki/Korea_Telecom">Korea Telecom</a>) showed off WiBro trial services during the Asia-Pacific Economic Cooperation (<a class="mw-redirect" title="APEC" href="http://en.wikipedia.org/wiki/APEC">APEC</a>) summit in Busan.
February 10th 2006: <a title="Telecom Italia" href="http://en.wikipedia.org/wiki/Telecom_Italia">Telecom Italia</a>,
the dominant telephony and internet service provider in Italy, together
with Korean Samsung Electronics, has demonstrated to the public a WiBro
network service on the occasion of the <a title="2006 Winter Olympics" href="http://en.wikipedia.org/wiki/2006_Winter_Olympics">2006 Winter Olympics</a>, held in <a title="Turin" href="http://en.wikipedia.org/wiki/Turin">Turin</a>, with downspeed of 10 Mbit/s and upspeed of some hundreds of kbit/s even in movement up to 120 km/h.
In the same event Samsung tlc div. president Kitae Lee assured a
future of 20-30 Mbit/s by the end of this year (2006) and 100+ Mbit/s
down / 1+ Mbit/s up in 2008 .
<a class="mw-redirect" title="KT Corporation" href="http://en.wikipedia.org/wiki/KT_Corporation">KT Corporation</a> launched commercial WiBro service in mid-2006 as reported.
Sprint (US), BT (UK), KDDI (JP), and TVA (BR) have or are trialing WiBro.
<a class="mw-redirect" title="KT Corporation" href="http://en.wikipedia.org/wiki/KT_Corporation">KT Corporation</a> and <a title="SK Telecom" href="http://en.wikipedia.org/wiki/SK_Telecom">SK Telecom</a> launched WiBro around Seoul on June 30, 2006. More about the KT launch.</span>
On April 3, 2007, KT launched WiBro coverage for all areas of <a title="Seoul" href="http://en.wikipedia.org/wiki/Seoul">Seoul</a> including all <a title="Seoul Metropolitan Subway" href="http://en.wikipedia.org/wiki/Seoul_Metropolitan_Subway">subway lines</a>.<br style="color: Red; font-family: Arial;">
WiBro adopts <a title="Duplex (telecommunications)" href="http://en.wikipedia.org/wiki/Duplex_%28telecommunications%29">TDD</a> for duplexing, <a class="mw-redirect" title="OFDMA" href="http://en.wikipedia.org/wiki/OFDMA">OFDMA</a>
for multiple access and 8.75 MHz as a channel bandwidth. WiBro was
devised to overcome the data rate limitation of mobile phones (for
example <a title="Code division multiple access" href="http://en.wikipedia.org/wiki/Code_division_multiple_access">CDMA</a> 1x) and to add mobility to broadband Internet access (for example <a title="Asymmetric Digital Subscriber Line" href="http://en.wikipedia.org/wiki/Asymmetric_Digital_Subscriber_Line">ADSL</a> or <a title="Wireless LAN" href="http://en.wikipedia.org/wiki/Wireless_LAN">Wireless LAN</a>). In February 2002, the Korean government allocated 100 MHz of <a title="Electromagnetic spectrum" href="http://en.wikipedia.org/wiki/Electromagnetic_spectrum">electromagnetic spectrum</a> in the 2.3 - 2.4 GHz band, and in late 2004 WiBro Phase 1 was standardized by the <a title="Telecommunications Technology Association (page does not exist)" class="new" href="http://en.wikipedia.org/w/index.php?title=Telecommunications_Technology_Association&action=edit&redlink=1">TTA</a> of Korea and in late 2005 <a title="International Telecommunication Union" href="http://en.wikipedia.org/wiki/International_Telecommunication_Union">ITU</a> reflected WiBro as <a title="Institute of Electrical and Electronics Engineers" href="http://en.wikipedia.org/wiki/Institute_of_Electrical_and_Electronics_Engineers">IEEE</a> <a class="mw-redirect" title="802.16e" href="http://en.wikipedia.org/wiki/802.16e">802.16e</a> (mobile <a title="WiMAX" href="http://en.wikipedia.org/wiki/WiMAX">WiMAX</a>). Two South Korean Telco (<a title="KT (telecommunication company)" href="http://en.wikipedia.org/wiki/KT_%28telecommunication_company%29">KT</a>, <a title="SK Telecom" href="http://en.wikipedia.org/wiki/SK_Telecom">SKT</a>) launched commercial service in June 2006, and the tariff is around US$30.
WiBro <a title="Base station" href="http://en.wikipedia.org/wiki/Base_station">base stations</a>
will offer an aggregate data throughput of 30 to 50 Mbit/s and cover a
radius of 1-5 km allowing for the use of portable internet usage. In
detail, it will provide mobility for moving devices up to 120 km/h
(74.5 miles/h) compared to Wireless LAN having mobility up to walking
speed and Mobile Phone having mobility up to 250 km/h. From testing
during the APEC Summit in <a title="Busan" href="http://en.wikipedia.org/wiki/Busan">Busan</a> in late 2005, the actual range and bandwidth were quite a bit lower than these numbers. The technology will also offer <a class="mw-redirect" title="Quality of Service" href="http://en.wikipedia.org/wiki/Quality_of_Service">Quality of Service</a>.
The inclusion of QoS allows for WiBro to stream video content and other
loss-sensitive data in a reliable manner. These all appear to be (and
may be) the stronger advantages over the fixed <a title="WiMAX" href="http://en.wikipedia.org/wiki/WiMAX">WiMAX</a>
standard (802.16a). Some Telcos in many countries are trying to
commercialize this Mobile WiMAX (or WiBro). For example, TI (Italia), <a title="Televisão Abril" href="http://en.wikipedia.org/wiki/Televis%C3%A3o_Abril">TVA</a>
(Brazil), Omnivision (Venezuela), PORTUS (Croatia), and Arialink
(Michigan) will provide commercial service after test service around
2006-2007. While WiBro is quite exacting in its requirements from
spectrum use to equipment design, WiMAX leaves much of this up to the
equipment provider while providing enough detail to ensure
interoperability between designs.<br><h2 style="color: Red; font-family: Arial;">Network deployment</span></h2><br style="color: Red; font-family: Arial;"><a title="SK Telecom" href="http://en.wikipedia.org/wiki/SK_Telecom">SK Telecom</a> and <a class="mw-redirect" title="Hanaro Telecom" href="http://en.wikipedia.org/wiki/Hanaro_Telecom">Hanaro Telecom</a> have announced a partnership to roll out WiBro nationwide in Korea, excluding <a title="Seoul" href="http://en.wikipedia.org/wiki/Seoul">Seoul</a> and six provincial cities, where independent networks will be rolled out.
In November 2004, <a class="mw-redirect" title="Intel" href="http://en.wikipedia.org/wiki/Intel">Intel</a> and <a title="LG Electronics" href="http://en.wikipedia.org/wiki/LG_Electronics">LG Electronics</a> executives agreed to ensure compatibility between WiBro and <a title="WiMAX" href="http://en.wikipedia.org/wiki/WiMAX">WiMAX</a> technology.</span>
In September 2005, <a title="Samsung Electronics" href="http://en.wikipedia.org/wiki/Samsung_Electronics">Samsung Electronics</a> signed a deal with <a class="mw-redirect" title="Sprint Nextel Corporation" href="http://en.wikipedia.org/wiki/Sprint_Nextel_Corporation">Sprint Nextel Corporation</a> to provide equipment for a WiBro trial.
In November 2005, <a class="mw-redirect" title="KT Corporation" href="http://en.wikipedia.org/wiki/KT_Corporation">KT Corporation</a>(aka <a class="mw-redirect" title="Korea Telecom" href="http://en.wikipedia.org/wiki/Korea_Telecom">Korea Telecom</a>) showed off WiBro trial services during the Asia-Pacific Economic Cooperation (<a class="mw-redirect" title="APEC" href="http://en.wikipedia.org/wiki/APEC">APEC</a>) summit in Busan.
February 10th 2006: <a title="Telecom Italia" href="http://en.wikipedia.org/wiki/Telecom_Italia">Telecom Italia</a>,
the dominant telephony and internet service provider in Italy, together
with Korean Samsung Electronics, has demonstrated to the public a WiBro
network service on the occasion of the <a title="2006 Winter Olympics" href="http://en.wikipedia.org/wiki/2006_Winter_Olympics">2006 Winter Olympics</a>, held in <a title="Turin" href="http://en.wikipedia.org/wiki/Turin">Turin</a>, with downspeed of 10 Mbit/s and upspeed of some hundreds of kbit/s even in movement up to 120 km/h.
In the same event Samsung tlc div. president Kitae Lee assured a
future of 20-30 Mbit/s by the end of this year (2006) and 100+ Mbit/s
down / 1+ Mbit/s up in 2008 .
<a class="mw-redirect" title="KT Corporation" href="http://en.wikipedia.org/wiki/KT_Corporation">KT Corporation</a> launched commercial WiBro service in mid-2006 as reported.
Sprint (US), BT (UK), KDDI (JP), and TVA (BR) have or are trialing WiBro.
<a class="mw-redirect" title="KT Corporation" href="http://en.wikipedia.org/wiki/KT_Corporation">KT Corporation</a> and <a title="SK Telecom" href="http://en.wikipedia.org/wiki/SK_Telecom">SK Telecom</a> launched WiBro around Seoul on June 30, 2006. More about the KT launch.</span>
On April 3, 2007, KT launched WiBro coverage for all areas of <a title="Seoul" href="http://en.wikipedia.org/wiki/Seoul">Seoul</a> including all <a title="Seoul Metropolitan Subway" href="http://en.wikipedia.org/wiki/Seoul_Metropolitan_Subway">subway lines</a>.<br style="color: Red; font-family: Arial;">