WiBro

WiBro (Wireless Broadband) is a wireless broadband Internet technology developed by the South Korean telecoms industry. WiBro is the South Korean service name for IEEE 802.16e (mobile WiMAX) international standard. By the end of 2012, the Korean Communications Commission intends to increase WiBro broadband connection speeds to 10Mbit/s, around ten times the current speed, which will complement their 1Gbit/sec fibre-optic network.^[1]

WiBro adopts TDD for duplexing, OFDMA for multiple access and 8.75/10.00 MHz as a channel bandwidth. WiBro was devised to overcome the data rate limitation of mobile phones (for example CDMA 1x) and to add mobility to broadband Internet access (for example ADSL or Wireless LAN). In February 2002, the Korean government allocated 100 MHz of electromagnetic spectrum in the 2.3–2.4 GHz band, and in late 2004 WiBro Phase 1 was standardized by the TTA of Korea and in late 2005 ITU reflected WiBro as IEEE 802.16e (mobile WiMAX). Two South Korean Telcom (KT, SKT) launched commercial service in June 2006, and the tariff is around US$30.

WiBro base stations will offer an aggregate data throughput of 30 to 50 Mbit/s per carrier 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 mi/h) compared to Wireless LAN having mobility up to walking speed and mobile phone technologies having mobility up to 250 km/h. From testing during the APEC Summit in Busan in late 2005, the actual range and bandwidth were quite a bit lower than these numbers. The technology will also offer Quality of Service. 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 WiMAX standard (802.16a). Some Telcos in many countries are trying to commercialize this Mobile WiMAX (or WiBro). For example, TI (Italy), TVA (Brazil), Omnivision (Venezuela), PORTUS (Croatia), and Arialink (Michigan) will provide commercial service after test service around 2006–2007. While WiBro is quite precise 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.

Contents [hide] 1 Current service 2 Network deployment 3 Road Map 4 See also 5 References 6 External links

[edit] Current service

In Korea, KT (Korea Telecom) offers Wave 2 (18.4 Mbit/s, 4 Mbit/s) for $22 a month with 30 GB data usage. The service coverage is nationwide, including Seoul, Incheon, Gyeonggi-do, and Daegu. SK Telecom offers Wave 2 WiBro Service for $18.87 a month with 30 GB data usage. Service coverage is nationwide but very limited.

For Korea visitors and travelers who wants Internet access for 1 month or less. Just look out for Show Stand in Incheon Airport. Information from October 2010. In Incheon Airport you can rent a Wibro USB Stick for 5,000 Won per day. This is around US$4.5. Or pay 100,000 Won or around US$90 for one month. Short time rent starts with 5,000 Won and you get up to 50% discount if you use it longer than 2 weeks. Important, standard version will only work in Seoul, Incheon and the surrounds of Seoul. If you want to use it anywhere in Korea you had to use the "advanced" service, which cost 8,000 Won per day or around US$7. Deposit. You had to deposit 100.000 Won for renting the stick. This will be given back in return of the stick. So far I know, you can also rent in inside Seoul, but in case of, rent in the Incheon Airport. Also it was working in Daejon, which is almost 2 hours from Seoul away by bus.

Tikona (Independent services provider) offers WiBro service for up to 2 Mbit/s in many cities in India. 2 MBit/s Unlimited for Rs. 3,499 (roughly $75).

[edit] Network deployment

This article is in a list format that may be better presented using prose. You can help by converting this article to prose, if appropriate. Editing help is available. (September 2009)

In November 2004, Intel and Samsung Electronics executives agreed to ensure compatibility between WiBro and Mobile WiMAX technology.^[2]

KT Corporation, SK Telecom and Hanaro Telecom(acquired by SK Telecom and renamed to SK Broadband) had selected as Wibro operators in January, 2005. However, Hanaro Telecom has cancelled its plan for the WiBro and returned WiBro licence in April 2005.

In September 2005, Samsung Electronics signed a deal with Sprint Nextel Corporation to provide equipment for a WiBro trial.^[3]

In November 2005, KT Corporation(aka Korea Telecom) showed off WiBro trial services during the Asia-Pacific Economic Cooperation (APEC) summit in Busan.

February 10, 2006: Telecom Italia, 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 2006 Winter Olympics, held in Turin, with downlink speed of 10 Mbit/s and uplink speed of some hundreds of kbit/s even in movement up to 120 km/h.^[4]

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.^[4]

KT Corporation launched commercial WiBro service on June 2006.^[5]

Sprint (US), BT (UK), KDDI (JP), and TVA (BR) have or are trialing WiBro.

KT Corporation and SK Telecom launched WiBro around Seoul on June 30, 2006. More about the KT launch.^[6]

On April 3, 2007, KT launched WiBro coverage for all areas of Seoul including all subway lines.

As of March, 2011, KT's WiBro coverage is expanded nationwide covering 85% of Koreans.

[edit] Road Map

• KT

KT will continually build and upgrade WiBro. KT has formerly upgraded its network bandwidth to 10Mhz form 8.75Mhz. KT promised to expand coverages and maintain their WiBro network as 3W (WiBro, Wi-Fi, WCDMA) plan.

• SK

SK is not interested in WiBro. Their coverage is limited to Seoul area and few hot spots over the nation. SK still uses 8.75Mhz bandwidth on 2.3Ghz frequency. However, in 2012 - when license for 2.3Ghz expires, there is a rumor that SK will dump WiBro system and move on to LTE. 

http://en.wikipedia.org/wiki/WiBro