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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

98,031

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

80,711

Broadband & IPTV in Korea UPDATE - May 1, 2014

06/04/2014

26,146

Reports

IPTV subscribers in Korea UPDATE - May 1, 2014

06/04/2014

21,987

Broadband Subscribers in Korea UPDATE - May 1, 2014

06/04/2014

23,529

LTE subscribers in Korea UPDATE - May 1, 2014

06/04/2014

25,193

LTE in Korea UPDATE - May 1, 2014

06/02/2014

32,663

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

82,961

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

30,099

Switching and Routing - Part 1. Router Architecture

05/23/2014

65,358

Switching and Routing for Dummies - IP Routing

05/08/2014

66,047

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

115,498

Switching and Routing for Dummies - Ethernet Switching

04/28/2014

70,627

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

108,822

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

63,986

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

136,717

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

68,826

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

26,308

Required CPRI link capacity in function of radio technologies

03/24/2014

35,309