3G IP Architecture

3G IP Architecture

1. 3G IP Architecture
MuhamadYopan, MBA, CCIE
Ericsson IndonesiaDec 21, 2013

2. GSM Node Definitions
MS: Mobile Subscriber
The subscriber and the mobile device.
BTS: Base Station Transceiver
Mobile wireless transceiver used to aggregate discrete mobile systems in the BSS.
BSC: Base Station Controller
BTS aggregator and controller. Termination point for the Abisinterface.
BSS: Base Station Subsystem
The MS, BTS and BSC.
MSC: Mobile Switching Center
Main call processing element in the mobile wireless network. Equivalent to a Class 5
switch.
VLR: Visitor Location Register
A database that stores information related to the MSsassociated with the MSC to
which it is attached.
HLR: Home Location Register
A central database that stores the subscriber information for all mobile subscribers
authorized to use a given GSM network.

3. UMTS Node Definitions
UE
User Equipment (the mobile device).
NodeB
Analogous to the BTS in the GSM/GPRS BSS, the NodeBis responsible for Ue
aggregation. Uses W-CDMA for the air interface.
Radio Access Controller (RNC)
Analogous to the BSC in the GSM/GPRS BSS, the RNC aggregates Iubtraffic from
the NodeBsin a particular region of the RAN.
Responsible for air encryption, mobility management (handover), and voice/data
transmission to the circuit-switched and packet-switched core.
Media Gateway (MGW)
The element responsible for interworking voice traffic between and among formats
(e.g. ATM AAL2 RTP/IP).

4. SGSN/GGSN
SGSN: Serving GPRS Support Node
An interworking element responsible for providing packet access between the RAN
and the Packet Switched Network (PSN). Encapsulates subscriber traffic in GTP for
transmission across the Gninterface.
GGSN: Gateway GPRS Support Node
An IP element responsible for de-encapsulating GTP traffic from the Gninterface and
interfacing with external networks (such as the Internet).

5. GSM
MS
MS
BTS
BTS
MSS
CS CORE
Um
Um
Abis
Abis
A
Nb
Mc
MSS
Mc
Nc
F
E C,D
gsmSSF-
gsmSCF
GRAN
BSC
IN EIR SMS-C HLR
MSC-S
M-MGW
MSC-S
M-MGW

6. PS CORE
IP PDN
Gb
Gi
Gn
GPRS
MS
MS
BTS
BTS
MSS
CS CORE
Um
Um
Abis
Abis
A
Nb
Mc
MSS
Mc
Nc
F
E C,D
gsmSSF-
gsmSCF
GRAN
BSC
IN EIR SMS-C HLR
MSC-S
M-MGW
MSC-S
M-MGW
SGSN GGSN

7. IuPS
IuCS
IP PDN
Gb
Gi
Gn
3G
MSS
A
Nb
Mc
MSS
Mc
Nc
F
E C,D
gsmSSF-
gsmSCF
IN EIR SMS-C HLR
MSC-S
M-MGW
MSC-S
M-MGW
SGSN GGSN
MS
BTS
Um
Abis
UE
UE
Uu
Uu
Iub
Iub
IurUTRAN
BSC
RNC
RNC
NodeB
NodeB

8. Network Schematic
RNC
PE-1
PE-2
SW-1
SW-2
P-1P-2
SGSN
PE-1
MPLS
RAN
MPLS
CORE
CE
Gi Network
TATA
Google
EquinixIX
Internet
Gateway
GGSN
BSC
MetroE
SW-1
SW-2
PE-2
IN
PE-1
SW-1
SW-2PE-2
HLRMSCMGW
P-1
P-2
PCRFRADIUS
Facebook

9. IuB& Abis
MetroE
BTS
BTS
BTS
RNC
BSC

10. Vendors

11. Telecommunication companies

12. Sample Careers
•http://www.ericsson.com/careers

13. Network Engineer
• Apply now
• Date: Dec 2, 2013
• Ericsson Overview
• Ericsson is world’s leading provider of communications technology and services. Our offerings include services, consulting, software and
infrastructure within Information and Communications Technology.
Using innovation to empower people, business and society, Ericsson is working towards the Networked Society: a world connected in real
time that will open up opportunities to create freedom, transform society and drive solutions to some of our planet’s greatest challenges.
We are truly a global company, operating across borders in over 180 countries, offering a diverse, performance-driven culture and an
innovative and engaging environment. As an Ericsson employee, you will have freedom to think big and the support to turn ideas into
achievements. Continuous learning and growth opportunities allowyou to acquire the knowledge and skills necessary to progress and
reach your career goals. We invite you to join our team.
• Job Summary
• The Network Engineer performs design, optimization and audit of a network to meet the customer requirements. The Network Engineer
role is applicable for design & optimization of RAN, Transmission, Core, OM and Services Networks. The Network Engineer can be
engaged in the whole process from pre-sales of services and networks to service delivery and acceptance.
The role is focused on executing design, audit and optimization services, where the network engineer is responsible for part of the
solution and part of the service process. Hereby, the Network Engineer is responsible to keep time, performance and quality according to
Ericsson requirements and Customer contract.
• Responsibilities & Tasks:
• Identify add-on sales opportunities
• Participate in knowledge sharing activities
• Assist in development of a service proposal
• Collect and document customer requirements
• Position Qualifications
• Core Competences
• Ericsson Portfolio Knowledge
• Creating & Innovating
• Entrepreneurial & Commercial Thinking
• Applying Expertise & Technology
• Analyzing
• Learning & Researching
• Delivering Results & Meeting Customer Expectations
Minimum Qualififcation& Experience Requirements
•
Preferred Qualification & Experience Requirements
• Planning, organization and executing skills.
• Good communication and documentation skills.
• Ability to handle customer meetings and discussions.

14. Open Positions for:
•RNC Network Design
•Radio Network Optimization
•Field Project Coordination (SACME)
•Document Controller
•Field Project Management
•Field Project Coordination (TI)
•Commissioning and Integration
•BSC Connectivity Design
Work Location : Sumatera & Kalimantan
Experience > 1 year

15. IP RAN System Integration Engineer
Tangent International are currently seeking a IP RAN System Integration Engineer for a 3 month rolling contract
based in Singapore
Summary:
- Looking for a IPRAN SI (system integrator) working on routers modernization in the IPRAN from Cisco
7609 to Cisco ASR9K.
- Duration is 3 months from Jan 2014. Extendable
Responsibilities:
- To start up, test, configure, integrate and commission two CiscoASR9K routers customers exchange
- To install Cisco ASR9K at customers exchange complete with cabling works, power, signal and fibers
- To actively involved in POC, perform all the required test casesin UAT document
- To assist IPRAN SA in producing MOP and UAT document
- To work on router side for RBS and Core nodes migration to CiscoASR9K
- Shutdown of old Cisco 7609 router
Competence:
- In-depth knowledge of IP networks, features and functions.
- Must have an onsite IP integration experience from previous project/assignments
- Requires Cisco ASR experience
- Cisco certification (eg: CCIE) is added advantage
- Strong customer engagement & communication skills
Please note we will not be able to consider candidate who are currently permanent at Ericsson or that have been
permanent within the last 2 years