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...

As noted in the previous post, currently there are two types of user authentication in the Wi-Fi networks operated by Korean operators: IEEE 802.1X-based and captive portal-based authentication. 802.1X-based authentication targets primarily mobile devices with an operator's USIM card, whereas captive portal-based authentication to be discussed here is used to attract users without a permane...

We will talk about call flow in IEEE 802.1X-based user authentication used in Korean network operators' Wi-Fi networks. Before we continue, let's take a look at what Korean operators' current Wi-Fi authentication are like first. KT provides the following SSIDs in its Wi-Fi Hotspots: ollehWiFi (with lock icon): Users are authenticated based on the IMSI stored in USIM of their...

For the rest of the Q1 2015 issue of Korea Communication Review magazine please click here 2. 5G Strategies by SK Telecom Immediately after KT announced its new vision GiGAtopia in May, 2014, SK Telecom, the No. 1 mobile operator in Korea, also presented ICTnomics (ICT + Economics) designed to integrate ICT into a wide range of industries as the core concept of its 30-year growth plan....

This article was published in Korea Communication Review magazine (KCR Q1 2015). For the rest of the Q1 2015 issue of Korea Communication Review magazine please click here The 'giga Internet era' has just begun, finally offering speeds of 1 Gbps - 10 times faster than the 100Mbps. For the past 7 ~ 8 years, the maximum Internet speeds for all access networks (FTTH, LAN and XDS...

This article was published in Korea Communication Review magazine (KCR Q1 2015). For the rest of the Q1 2015 issue of Korea Communication Review magazine please click here 1. What is "LTE-Unlicensed"? And what's the big deal about it? 2. Korean Operators' Position (KT, SK Telecom and LG U+) 3. Discussion on Regulatory Requirements 4. LTE Advocates vs. Wi-Fi Advocates 1. W...

SK Broadband & SK Telecom (SK) introduced various gigabit Internet access network solutions at the World IT Show 2014 held in Busan on October 20th. SK noted that the new solutions will be able to provide a bidirectional Internet speed of 1 Gbps per user. The company has been offering Internet services including LAN, FTTH, HFC and XDSL to its 4.7 million subscribers. At the show, the compan...

3. RAN Architecture Evolution Strategies SK Telecom introduced C-RAN right from the very early stages of the LTE service commercialization (January 2012) as an effort to achieve higher mobile network operation efficiency and more cost savings. As a result, most of the company's RAN is now in C-RAN architecture, where macro BBUs are separated from RRHs, and moved to centralized locations...

2. Inter-cell Coordination Evolution Strategies CA improves network capacity by broadening frequency bandwidth, whereas inter-cell coordination technologies do the same task by enhancing frequency efficiency. Inter-cell coordination is designed to manage radio resources more efficiently by having cells in different sites share user and/or cell information with each other. Inter-cell coo...

SK Telecom is the #1 mobile operator in Korea, with sales of KRW 16.6 trillion (USD 15.3 billion) in 2013, and with 50.1% of a mobile mobile subscription market share in 2Q 2014. It launched LTE service back in July 2011, and now more than half of its subscribers are LTE service subscribers, with 55.8% of LTE penetration as of 2Q 2014. Due to LTE subscription growth, more advanced device feat...

In the past two years, some new technologies have been introduced in Korea, apparently increasing broadband Internet speeds 3~5 times faster, from 100 Mbps to 300~500 Mbps, instantly. It certainly is fascinating in that such speed improvement was achieved without the hassle of re-cabling construction in apartment buildings. Because 100 Mbps had seemed unbeatable for almost a decade, this sure w...

HFR is probably most known as a vendor of wired/wireless network equipment like Mobile fronthaul, Carrier Ethernet, FTTx, etc. Today, we are going to hear from Dr. J.H. Lee (jongheonlee@hfrnet.com), CTO of HFR about one of its most popular solutions, flexiHaulTM, a mobile optical access solution. 1. Welcome! Thank you for being with us. Can you tell us a little bit about HFR first?...

1. Traditional RAN Architecture and Issues 1.1 Issue No. 1: Degraded service quality and network performance due to inter-cell interference 1.2 Issue No. 2: Increased costs of building and operating cell sites 2. Degradation of service quality and network performance due to inter-cell interference: Prevented by reducing X2 distance 3. Costs of building and operating cell sites: Reduced...

SK Telecom, the Korean No. 1 telecom operator, launched Btv Mobile service (in SD/HD) offering a variety of live broadcasting and VoD contents for mobile devices in around July 2012. And a year later in July 2013, boosted by the commercialization of LTE-A, it began a "Full HD" streaming service with drastically enhanced video quality. The following is the press release by SK Telecom about its n...