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SK Telecom's Network Evolution Strategies (2) - Inter-cell Coordination Evolution Strategy

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...

10/13/2014

34,099

Tech-Blog

DASAN Networks Showcases the Worlds fastest 10G Internet Service at ITU-PP

DASAN Networks has put on display its future Internet technology, developed in South Korea, which is capable of downloading a Full-HD movie in a blink of an eye (0.8 seconds.) DASAN Networks has announced that it has successfully presented its 10G Internet service using SK Broadband’s service network at BEXCO, Busan in front of the ICT Ministers and field experts on the 20th of Octobe...

10/10/2014

9,265

Korea ICT News

KT to Initiate Cooperation with Leading ICT Companies in Asia for IoT Project

KT as Korea’s national telecommunications provider, has embarked on cooperating with mobile carriers in Asia on the Internet of Things (IoT). KT announced on October 10th that KT has signed a memorandum of understanding (MOU) for IoT with eight member companies of Conexus, the Asian alliance of mobile carriers, to jointly develop technologies and provide services at the Conexus general m...

10/08/2014

5,426

Korea ICT News

SK Telecom's Network Evolution Strategies (1): Carrier Aggregation Evolution Strategy

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...

10/07/2014

44,099

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

97,266

Technical Documents

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

82,036

Tech-Blog

Evolution of Mobile RAN Architecture in LTE/LTE-A Era (C-RAN)

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...

04/16/2014

63,520

Tech-Blog

CPRI (1): Emergence of C-RAN/Fronthaul and CPRI overview

Emergence of C-RAN (Separation of Baseband and Radio, and Baseband Centralization) Today, global LTE operators are competing with one another more fiercely than ever, under the pressure to provide better service quality and higher speed. Conventional Internet traffic has been increasing steadily. What's more, mobile traffic resulting from OTT video services, such as YouTube, Mobile IPT...

03/04/2014

77,158

Tech-Blog

Understanding the Detailed Operations of DHCP

Table of Contents I. Introduction II. Procedures for Detecting IP Address Conflicts III. DHCP Offer/ACK Messages: Broadcast or Unicast ? IV. State Transition of DHCP Clients I. Overview Dynamic Host Configuration Protocol (DHCP) has been widely adopted as a protocol for allocating network configuration data, including an IP address, dynamically to...

10/30/2013

83,969

Technical Documents

LTE QoS (Part 1) - EPS Bearers and SDF

We will talk about LTE QoS this time. QoS functions provided by any network, whether wired or wireless, are all based on standards (IETF RFC, IEEE 802, 3GPP TS, etc.). They may work differently using different standards depending on whether the network is wired (Ethernet/IP/MPLS) or wireless (LTE/WiBro/Wi-Fi). But, basically what the QoS is about is that traffic quality is guaranteed (i) if...

10/01/2013

80,121

Tech-Blog

LTE Identification I: UE and ME Identifiers

Table of Contents 1. Introduction 2. Classification of LTE Identification 3. Identifiers for User Equipment (UEI IDs) 4. Identifiers for Mobile Equipement (ME IDs) 5. Closing and References 1. Introduction In LTE network, different IDs are used to identify each entity depending on their relationship with other IDs just like different names and titles ar...

08/20/2013

166,648

Technical Documents

LTE Security I: Concept and Authentication

Table of Contents 1. Introduction 2. LTE Security Concept 3. LTE Authentication Procedure 4. Closing and References 1. Introduction Wireless communication, in its nature, is always at a risk of eavesdropping or manipulation because data originally sent from/to a user may be received and unlawfully used by an unintended user. Locations or traveling routes...

07/31/2013

230,932

Technical Documents

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