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...

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...

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...

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,...

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+, with its competitors KT and SK Broadband, presented Live TV service (real-time retransmission of broadcast channels ov...

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...

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...

Quick Guide to OSPF ► 1. Building Shortest Path Tree Topology 2. Redistributing External Network Routes into OSPF Network This time, we will discuss how routers discover IP network topologies and build shortest path trees by using OSPF protocols. Certainly, routing protocols like OSPF are based on operating principles that are hard to understand if you are not a routing expert. Man...

For the rest of the Q2 2015 issue of Korea Communication Review magazine please click here SK Telecom at the Mobile World Congress (MWC) 2015 demonstrated its newest network operation platform for 5G called “Fast Data Platform”, using two big data-based intelligent operation platforms: T-Packet Analytics & Network Intelligence (T-PANI) and Analytics Platform for Intelligent O...

For the rest of the Q2 2015 issue of Korea Communication Review magazine please click here At Mobile World Congress (MWC) 2015, SK Telecom showcased Quantum Cryptography System (QCS) it had developed for secure data transmission in ultra-capacity, ultra-high-speed networks of 5G era. SK Telecom presented Quantum Cryptography System (QCS) at MWC 2015 Unlike the traditional crypto...

For the rest of the Q2 2015 issue of Korea Communication Review magazine please click here As a sequel to the previous post (KT's demonstration of LTE-H and LTE-U), this post will introduce another pre-5G/5G technology, LTE-TDD, showcased by KT at MWC 2015, covering three relevant demonstrations: 9-carrier CA, LTE-UL/DL CA, and triple mode cell. 3. LTE-B (LTE-Beyond) Figure...

For the rest of the Q2 2015 issue of Korea Communication Review magazine please click here At Barcelona's Mobile World Congress (MWC) 2015, KT demonstrated a variety of new 5G, Hetnet and IoT technologies and services. Of all those presented, below we will focus on our most interested topics, WiFi-related pre-5G technology, LTE-Hetnet (LTE-H) and LTE-Unlicensed (LTE-U), and see how t...

For the rest of the Q2 2015 issue of Korea Communication Review magazine please click here SKT and LG U+ to create more customer value, and KT to lead technology innovation through standardization...

For the rest of the Q2 2015 issue of Korea Communication Review magazine please click here Contela, a leading Smallcell solution provider based in Korea, introduced its new Smallcell solutions at MWC 2015. The company has provided SK Telecom, a Korean network operator, with LTE Femtocell solutions through years of cooperation with SK Telecom. At MWC, Contela presented three wire...

For the rest of the Q2 2015 issue of Korea Communication Review magazine please click here 6 things you should know about enterprise WLAN IEEE 802.11 wireless LAN (“WLAN”) technology, commonly...