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A case study of building an enterprise private network using Starlink LEO satellites in Japan: ① Starlink + Local 5G ② Starlink + Wi-Fi ③ Starlink + 4G/5G Base Station
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Documents
1,245
Reports
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Technical Documents
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Tech-Blog
327
One-Shot Gallery
185
Korea ICT News
609
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3,027
CoMP (1): CoMP Types - CS, CB, JT and DPS
Today, we will learn about CoMP, an inter-cell cooperation technology in LTE-A, since we learned about ICIC and eICIC in the previous posts. At an early stage of LTE/LTE-A, offering high speed is the most important marketing point for operators. However, as LTE subscribers and traffic grow, satisfying users with high Quality of Experience (QoE), for example, by improving user throughputs at cel...
08/12/2014
67,039
Tech-Blog
Interference Coordination in LTE/LTE-A (2): eICIC (enhanced ICIC)
Enhanced Inter-Cell Interference Coordination (eICIC) As noted in the previous post about ICIC, we will find out about enhanced Inter-Cell Interference Coordination (eICIC), an interference control technology in LTE-A in this post. In LTE/LTE-A, one key challenge for operators is that they have to increase network capacity to keep up with fast-growing traffic. Especially, crowded areas in m...
08/06/2014
66,324
Tech-Blog
LTE RAN Architecture: Cell site and LTE BS, B/F-Hauling, Coordination, Comparison and C...
08/06/2014
43,572
Reports
Switching and Routing - Part 4. IP Forwarding by L3 Switch
Switching and Routing 1. Switching and Routing for Dummies - Ethernet Switching 2. Switching and Routing for Dummies - IP Routing 3. Switching and Routing - Part 1. Router Architecture 4. Switching and Routing - Part 2. Packet Forwarding by IP Router 5. Switching and Routing - Part 3. L2 (Ethernet) Switching by L3 Switch 6. Switching...
08/01/2014
70,626
Tech-Blog
HFR's Mobile Fronthaul Solutions for LTE-A Era
08/01/2014
44,585
Reports
Switching and Routing - Part 3. L2 (Ethernet) Switching by L3 Switch
Switching and Routing 1. Switching and Routing for Dummies - Ethernet Switching 2. Switching and Routing for Dummies - IP Routing 3. Switching and Routing - Part 1. Router Architecture 4. Switching and Routing - Part 2. Packet Forwarding by IP Router 5. Switching and Routing - Part 3. L2 (Ethernet) Switching by L3 Switch 6. Switching...
07/11/2014
105,407
Tech-Blog
Broadband Access Network Architecture in Korea
07/06/2014
33,418
One-Shot Gallery
Korea Communication Review, July 2014
07/04/2014
68,443
Reports
Why should jitter be minimized in CPRI fronthaul? - frequency accuracy
In this post, we will talk about “jitter” introduced in the fronthaul network of LTE C-RAN. As shown in the figure on the right, jitter refers to the skew or variation in time or phase of a digital signal exchanged between communication systems. This jitter can eventually cause errors during the data and clock recovery process at RRH. Then, why should we be worried about jitter...
07/04/2014
55,102
Tech-Blog
What's GiGAtopia envisioned by Chairman Chang-gyu Hwang of KT? (GiGa FTTH, GiGA Wire, G...
KT’s Vision: GiGAtopia Source: KT What? Chairman Chang-gyu Hwang of KT (with sales of KRW 23.8 trillion in 2013), at a press conference held at KT Olleh Square in Gwanghwamun, Seoul on May 20, announced that "KT will open up a new age of GiGAtopia by investing KRW 4.5 trillion (USD 4.4 billion) in GiGA FTTH, GiGA Path (heterogeneous networks convergence technology that combines...
06/26/2014
80,587
Tech-Blog
Switching and Routing - Part 2. Packet Forwarding by IP Router
Switching and Routing 1. Switching and Routing for Dummies - Ethernet Switching 2. Switching and Routing for Dummies - IP Routing 3. Switching and Routing - Part 1. Router Architecture 4. Switching and Routing - Part 2. Packet Forwarding by IP Router 5. Switching and Routing - Part 3. L2 (Ethernet) Switching by L3 Switch 6. Switching...
06/18/2014
67,822
Tech-Blog
EMM Procedure 10 & 11. Move to Another City and Attach
Table of Contents 1. Introduction 2. EMM Case 10. Move to Another City 3. EMM Case 11. Initial Attach in Another City 4. EPS Entity Information 5. Closing 1. Introduction UE attempts a handover or cell reselection when the received signal strength from its serving cell becomes weak as it moves. If there is no neighbor cell at all near the travelling UE,...
06/11/2014
103,616
Technical Documents
Interference Coordination in LTE/LTE-A (1): Inter-Cell Interference Coordination (ICIC)
As mobile communication technology has evolved dramatically, from LTE (10 MHz) to LTE-A (10+10 MHz), and then to wideband LTE (20 MHz), South Korea's mobile market is hotter than ever with its big 3 operators competing fiercely in speed and quality (see Netmanias Report, LTE in Korea UPDATE - May 1, 2014). Operators can offer different maximum speeds depending on how wide frequency bandwidt...
06/05/2014
85,305
Tech-Blog
Broadband & IPTV in Korea UPDATE - May 1, 2014
06/04/2014
28,314
Reports
IPTV subscribers in Korea UPDATE - May 1, 2014
06/04/2014
23,507
One-Shot Gallery
Broadband Subscribers in Korea UPDATE - May 1, 2014
06/04/2014
25,455
One-Shot Gallery
LTE subscribers in Korea UPDATE - May 1, 2014
06/04/2014
27,180
One-Shot Gallery
LTE in Korea UPDATE - May 1, 2014
06/02/2014
35,377
Reports
Netmanias Interview with HFR - Fronthaul Solutions for LTE/LTE-A C-RAN (Cloud RAN)
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?...
05/27/2014
89,046
Tech-Blog
LTE in Korea Update - May 1, 2014
• LTE/LTE-A Commercialization by South Korea’s Big 3 Operators as of April 2014
05/27/2014
32,431
One-Shot Gallery
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