It has been over a year since KT Chairman Hwang Chang Kyu’s declaration of his vision GiGAtopia on May 20, last year. The main idea of GiGAtopia was that the company would make both of its wired and wireless networks giga-class, through investment of KRW4.5 trillion for three years to come. We thought it would be a good time to check how they did for the past one year, and what innovation...

손장우 (Harrison J. Son) 넷매니아즈 | (주)엔앰씨컨팅그룹 대표이사 son@netmanias.com 기가토피아라는 비전을 선언한지 1년이 넘은 지금, 그 동안 KT가 어떠한 혁신들을 이루어 냈는 지 정리해보자. 무엇을 하겠다고 했나? 작년 5월 KT가 제시한 기가토피아: 속도전 선포 - 빠른 것은 여전히 옳다. • 기가 인터넷: 기존 100Mbps인 가정에 기가급 인터넷 접속 속도를 제공하겠다 - 기가 FTTH: 광케이블이나 UTP가 인입되어 있는 가구는 1Gbps, 500Mbps를 제공하겠다. - 기가 와이어: 전화선만 인입되어 있는 가구도 대략 300Mbps를 제공하겠다...

Table of Content LG U+ achieved 600 Mbps in its Second LTE-U Demonstration We had a chance to discuss with a member of LG U+ Access Network Development Team who conducted the LTE-U demonstration last month. Below we will briefly review what we learned from him about their LTE-U demonstration, target areas, and commercialization plan, one at a time....

Quick Guide to OSPF 1. Building Shortest Path Tree Topology ► 2. Redistributing External Network Routes into OSPF Network In the previous post, we explained the procedure of how routers create their network topology maps using Router-LSA messages in an OSPF network, and build the shortest path trees based on link costs. Below, we will see how OSPF routers learn the routing informat...

KT IPTV (4K UHD) Service (1) UHD Live TV (2) 'Most Popular Channels Now' (9-Channel View) (3) 4-channel View (4) UHD VoD Success or failure of UHD service lies in how much UHD contents the service provided can offer. Being well aware of that, KT has gradually secured more contents, for example, through upscaling of Full HD movies to UHD quality (e.g. 'The Admiral: Roarin...

넷매니아즈에서 이란의 4대 이통사(MCI, MTN Irancell, Rightel and Taliya)를 대상으로 이란 테헤란에서 발표한 자료입니다. 우리나라가 전세계 이동 통신 서비스와 기술을 선도하고 있는 현실을 한 시간 동안 이란 통신사들/이란 정부의 고위직 분들에게 전달했습니다. pdf 파일은 여기서 다운로드 받으세요. 손장우 (son@netmanias.com)

For the rest of the Q3 2015 issue of Korea Communication Review magazine please click here Hear from CTO of Korean Telcos 1. Dr. Dongmyun Lee, CTO of KT: Leading 5G through wired/wireless Integration 2. Mr. Changwoo Lee, CTO of LG U+: LG U+'s Mobile Network Evolution Strategies ► 3. Dr. Jingsung Choi, CTO of SK Telecom: SK Telecom's 5G Evolution Strategies Dr....

For the rest of the Q3 2015 issue of Korea Communication Review magazine please click here In its second demonstration of LTE in Unlicensed spectrum ("LTE-U", LAA in 3GPP term) conducted last month - 7 months after its first demonstration where it showed 300 Mbps through CA of 20 MHz at 2.6 GHz and another 20 MHz at 5.8 GHz, LG U+ successfully achieved 600 Mbps through carrier aggregation (C...

지난 5월, LG U+는 작년 10월에 이어 두 번째로 600 Mbps급 LTE-U 기술을 시연하였다. 첫 번째 시연에서는 2.6 GHz 20 MHz와 5.8 GHz 20 MHz를 묶어 300 Mbps급 속도를 보여주었고, 이번 시연에서는 2.6 GHz 20 MHz와 5.8 GHz 60 MHz (3 x 20 MHz)를 묶어 600 Mbps급 속도를 보여주었다. LTE-U (LAA in 3GPP term)는 표준화도 완료되지 않은 상태지만, 국내에서는 LG U+를 선두로 이미 통신 3사 (SK Telecom, KT, LG U+) 모두 LTE-U를 시연하며 관련 기술을 확보해나가고 있다. SK Telecom은 올 2월 Ericsson/Qualcomm과 협력하여, 또 KT는 올 3월 MWC에서 삼성전...

KT IPTV (4K UHD) Service (1) UHD Live TV (2) 'Most Popular Channels Now' (9-Channel View) (3) 4-channel View (4) UHD VoD KT also offers 4-channel view service. This service is pretty similar to LG U+'s and has the following two options: Operator-selected channels: Offers a set of 4 channels selected by operator (sports, shopping, over-the-air and movies). User-selected...

KT IPTV (4K UHD) Service (1) UHD Live TV (2) 'Most Popular Channels Now' (9-Channel View) (3) 4-channel View (4) UHD VoD You probably have been switching channels, looking for something interesting to watch, until you finally settle down for one. For viewers like you, KT offers a new way of selecting channels through a service called "Most Popular Channels Now". At the company...

KT IPTV (4K UHD) Service (1) UHD Live TV (2) 'Most Popular Channels Now' (9-Channel View) (3) 4-channel View (4) UHD VoD KT launched the world's first UHD IPTV service in September 2014. Now it has over 100,000 subscribers as of April 2015, closing trailing LG U+ who has attracted around 125,000 UHD subscribers over the same period of time. What differentiates KT's UHD...

LG U+'s IPTV service 1. Live TV 1.1 Basic channel 1.2 Multiview: operator-selected channels 1.3 Personalized Multiview: user-selected channels ► 2. VoD 2.1 UHD VoD: Encoding rate and streaming of 4K UHD VoD content LG U+ began UHD (3840x2160) VoD service in October 2014 (no UHD channel available yet, though). When it comes to UHD service,...

KT IPTV (olleh GiGA UHD tv) 서비스 (1): 실시간 방송 서비스 KT IPTV (olleh GiGA UHD tv) 서비스 (2): 실시간 인기채널 KT IPTV (olleh GiGA UHD tv) 서비스 (3): 4 채널 동시 시청 ► KT IPTV (olleh GiGA UHD tv) 서비스 (4): 4K UHD VoD KT는 2014년 9월에 UHD(3840x2160) IPTV 서비스를 시작하면서 국내 IPTV 사업자로는 유일하게 UHD 방송과 UHD VoD 서비스를 함께 제공하고 있다. 본 블로그에서는 UHD VoD에 관해 살펴보자. UHD 서비스의...