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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

82,561

Broadband & IPTV in Korea UPDATE - May 1, 2014

06/04/2014

27,121

Reports

IPTV subscribers in Korea UPDATE - May 1, 2014

06/04/2014

22,779

Broadband Subscribers in Korea UPDATE - May 1, 2014

06/04/2014

24,497

LTE subscribers in Korea UPDATE - May 1, 2014

06/04/2014

26,221

LTE in Korea UPDATE - May 1, 2014

06/02/2014

33,917

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

86,018

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

31,268

Switching and Routing - Part 1. Router Architecture

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...

05/23/2014

67,519

Switching and Routing for Dummies - IP Routing

05/08/2014

68,320

EMM Procedure 8 & 9. Handover and Cell Reselection with TAU

Table of Contents 1. Introduction 2. EMM Case 8. Handover with TAU 3. EMM Case 9. Cell Reselection without TAU 4. EPS Entity Information 5. Closing 1. Introduction When UE accesses the network, a group of Tracking Areas (TAs) is assigned by the network (MME) through the Tracking Area Identity (TAI) list. The UE then can move within these TAs without hav...

05/07/2014

118,407

Switching and Routing for Dummies - Ethernet Switching

04/28/2014

72,890

EMM Procedure 7. Cell Reselection without TAU

Table of Contents 1. Introduction 2. Cell Reselection: Required System Information and Criteria 2.1 Overview of Cell Reselection Procedure 2.2 System Information 2.3 Cell Reselection Criteria 3. Cell Reselection without TAU 4. EPS Entity Information: Before/After Cell Reselection without TAU 5. Closing 1. Introduction Through the three compa...

04/23/2014

111,029

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

65,597

EMM Procedure 6. Handover without TAU - Part 3. S1 Handover

Table of Contents 1. Introduction 2. Concept of S1 Handover 2.1 S1 Protocol Stacks 2.2 S1AP Procedures and Messages Relating to Handover 2.3 S1 Handover Procedure at a Glance 2.4 UE State and Connection Information Before and After S1 handover 3. Procedure of S1 Handover 4. EPS Entity Information: Before/After S1 Handover 5. Closing 1. Intro...

04/08/2014

139,487

Fronthaul Size: Calculation of maximum distance between RRH and BBU

In C-RAN (Centralized/Cloud RAN), the more RRHs are covered by one CO (BBU hostelling site), i) the fewer COs are required, and ii) the more BBUs can be centralized at one CO. This allows for the most efficient utilization of BBU resources, thereby significantly reducing CAPEX/OPEX. For this reason, the maximum separation distance between RRH and BBU should be secured. This distance is cons...

04/01/2014

70,864

C-RAN Classification (1): Coverage-based

C-RAN Classification (1): Coverage-based 1. City-wide C-RAN: Thousands of RRHs (cell) 2. CO-based C-RAN: Hundreds of RRHs (cell) 3. Master Macro site-based C-RAN: Tens of RRHs (cell) 4. Local C-RAN (C-RAN over D-RAN): A few RRHs (cell)

03/26/2014

27,088

Required CPRI link capacity in function of radio technologies

03/24/2014

36,142

EMM Procedure 6. Handover without TAU - Part 2. X2 Handover

Table of Contents 1. Introduction 2. Concept of X2 Handover 2.1 X2 Protocol Stacks 2.2 X2AP Functions 2.3 X2 Messages Relating to Mobility Management Function 2.4 X2 Handover Procedure at a Glance 2.5 UE State and Connection Information Before and After X3 handover 3. Procedure of X2 Handover 4. EPS Entity Information: Before/After X2 Handover 4.1 Before...

03/21/2014

143,654