GSM TOWARDS LTE NETWORKS

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GSM TOWARDS LTE NETWORKS

• Lecture 5

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MOBILE TRAFFIC VOICE AND DATA
Exabyte Giga Giga Byte
Source Internal Ericsson DVB-H, Mobile WiMax,
M2M and WiFi traffic not included This slide
contains forward looking statements
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THE 3G VISION

• Global Seamless Roaming
• Common Worldwide Spectrum
• Multiple Radio Environments
• Wide Range of Services -Voice Data Equally
• Flexible, Spectrum Efficient Technologies
• Wireless - Wireline Integration
• Enhanced Security and Performance
• Wireline Services and Quality Levels
• Rapid Introduction of New Technology

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3G VISION - APPLICATION

• Application
• Multimedia Message Service (MMS)
• Email
• Video phone
• Video streaming
• Any service from the Internet

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3G VAS APPLICATIONS

• Video SMS
• Video Portal
• Mobile TV
• Video IVR
• Video CRBT
• Mobile Video Marketing
• YouTube upload
• Video conferencing
• Video greeting
• Dial TV service
• 3G Music Station with full track song download
• Video Contact Center

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2G TOWARDS 3G

• Higher data bandwidth requirement
• Anticipated subscriber demand for
• Audio/Video streaming
• Other multimedia services
• Collaborative services
• Location services

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3G - PRINCIPLE REQUIREMENT

• Support for voice quality comparable with fixed
  line networks
• Support for both circuit-switched and
  packet-switched data services
• Support for greater capacity and improved
  spectrum efficiency

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3GPRINCIPAL REQUIREMENT

• A data rate of 144 kb/s for users moving quickly
  e.g. moving vehicles
• A data rate of 384 kb/s for pedestrians
• A data rate of 2 Mb/s in a low mobility or office
  environment.
• Note how a network using GPRS and EDGE meets most
  of these criteria!

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Example 3G SERVICES (UMTS)

• Universal Mobile Telephone System (UMTS)
• Four QoS classes of services
• Conversational Class
• Voice, video telephony,video gaming
• Streaming Class
• multimedia, video on demand, webcast
• Interactive Class
• WWW browsing, database access, online gaming
• Background Class
• email, SMS, file downloading

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2.5 GPRS VOICE / data ARCHITECTURE
Voice Calls Path
Data Calls Path
Packet Data14.4 Kp/s
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3G NETWORK
LTE/SAE Architecture
IP networks
Only PS Domain shown
HLR/HSS
Gi
Gr
Gn
Gn
GGSN
SGSN
Iu
Gb
BSC
RNC
Iur
Node B
BTS
2G
3G
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HSPA (High Speed Packet Access)
LTE/SAE Architecture
IP networks
Only PS Domain shown
HLR/HSS
Gi
PCRF
Gr
Gx
Gn
GGSN
SGSN
Optimizing the 3G/HSPA payload plane for
Broadband traffic
Iu CP
Iu UP
Gb
BSC
RNC
Iur
Node B
BTS
2G
3G
Release 7 Direct Tunnel
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STEPS TOWARDS 3G

• 1- Backbone Roll Out (Packet Network)
• All the backend traffic transfer on IP
  (Packets) /Passport/ATM/MPBN
• 2- Data Network
• 3- Core Network
• 4- RAN Network

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1-BACKBONE ROLL OUT (Packet Network) Migration
Steps
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2-DATA NETWORK MIGRATION
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2nd GENERATION NETWORK
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3rd GENERATION NETWORK
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2G 3G NETWORK
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TOWARDS IP NETWORK
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3-CORE NETWORK MIGRATION
Classical MSC Architecture (old name Non-Layered
Mobile Core Network/ Monolitic Architecture)
Mobile Softswitch Solution (old name Layered
Mobile Core Network Architecture)
MSC Server (Control)
Classic MSC(Control and Switching)
Mobile Media Gateway (Switching)
Control Layer
IP/ATM/TDM
TDM
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INCREMENTAL MIGRATION

• In Pakistan, Most operators have incrementally
  Migrated.
• Two strategies have been adapted
• GPRS adapted by Warid Telecom.
• EDGE adapted by Ufone.

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MOBILE SOFT SWITCH SOLUTION FOR 3G CORE NETWORK

• One of the most efficient way to upgrade for 3G
  core networks.
• Layered architecture for ease
• MSS is only for Mobile core networks

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LAYERED ARCHITECTURE

• The benefit of layered architecture is from
  research and development purpose.
• In communication there are two main recourses
  i.e. controlling and connectivity.

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MSS LAYERS

• 1. Control Layer
• 2. Connectivity Laye
• 3. Application Layer

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(No Transcript)
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CONTROL LAYER

• This layer is refer to the logical layer as it
  performs logical operations of the MSS
• this node provides the analysis and control
  functions required for circuit switched traffic
  and using standardized signaling
• controlling the allocation of required resources
  in the connectivity layer

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CONNECTIVITY LAYER

• This layer is based on ATM (Asynchronous Transfer
  Mode) and IP protocols.
• Providing end-to-end connection throughout the
  core network.
• This layer provide standard interfaces for the
  connectivity with other legace networks.

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APPLICATION LAYER

• In this layer all the application are added and
  managed.
• Like if Warid want to provide CBRT (Caller Back
  Ring Tone) service then it add server that
  provide this service to the user in the
  application layer.
• Recourses of such servers are controlled by MSC-S.

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MSS ARCHITECTURE
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MSS NODES

1. MSC-S (Mobile Switching Server)
2. M-MGW (Mobile Media Gateway)

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MSC-SERVER

• MSC-S is the control layer device of the 3G
  network.
• It contains all call and control service logic
  such as
• ? Charging analysis
• ? Bearer selection
• ? Route analysis
• ? Media Gate way selection

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MSC-SERVER

• It provides efficient and centralized control of
  the distributed switching provided by the Mobile
  Media Gateway (M-MGw), ensuring flexible,
  cost-effective network design, and a smooth
  evolution to an all-IP core network.

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MSC-SERVER
Data Base nodes
Other MSC-S
Radio Sites
MSC-S
M-MGW
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M-MGW

• M-MGW is the connectivity layer device.
• M-MGW connects the MSS core network with the
  external networks such as WCDMA and GSM radio
  access networks, PSTN networks, PABXs, IMS/VoIP
  network, or other mobile networks.
• This node controlled by MSC-S.

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SIGNALING AND PROTOCOLS
Data Base Nodes
MAP
MAP
T-MSC Server 1
MSC Server 1
BSSAP
BSC
BICC / MAP
ISUP SIP
RANAP
GCP
GCP
PSTN/ISDN/PLMN
RNC
M-MGW 1
M-MGW 2
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INTERFACE PROTOCOLS
MSC Server 1
T-MSC Server 1
BSC
Nc
Mc
Mc
PSTN/ISDN/PLMN
A
RNC
Nb
Lu CS
M-MGW 1
M-MGW 2
POI
Control Plane
User Plane
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3G CALL SETUP
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CALL SETUP
Call Setup Scenario Subscriber A is a calling
party from PTML and Subscriber B is called
party that is related to PSTN
'A Mobile Station CALLS
'B Mobile Station ANSWERS
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
1. SETUP
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
2. RNC send SETUP message to MSC-S
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
3. SEIZE RESOURCES
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
4. M-MGW reply by ACK message
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
5. MSC-S inform RNC that call is in progress by
CALL PROCESSED message
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
6. MSC-S send ASSIGNMENT message
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
7. RNC send ERQ message to selected M-MGW
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
8. M-MGW setup virtual connection with RNC and
reply by ECF message
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
9. RNC send ASSIGNMENT COMPLETE message
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
10.MSC-S 1 send IAM message to MSC-S 2
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
11.T-Server send SEIZE RESOURCE message to
selected M-MGW
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
12. M-MGW send reply by ACK
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
13. T-Server forward IAM to terminating end i.e.
PSTN
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
14. PSTN reply by ACM
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
15. T-Server forward ACM to MSC-S
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
16. MSC-S order M-MGW to through connection back
to party A
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
17. MSC-S alert party A by sending ring back
tone and party B by ring tone
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
18. As B party answer the call and send ANM to
T-Server
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
19. T-Server inform ANM to MSC-S
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
20. MSC-S order to through both way speech path
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
21. MSC-S order to RNC to connect call to traffic
channel by CONNECT message
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
22. RNC send ACK
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MSC Server 1
T-MSC Server 1
RNC
PSTN/ISDN/PLMN
M-MGW 2
M-MGW 1
IP
BS
23. The UMTS call path has been established
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GSM Toward LTE Networks
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LTE/SAE Architecture Product dimension
LTE/SAE Architecture
PA/DU Core IMS
IP networks
HLR/HSS
HLR/HSS
SGi
PCRF
HLR/HSS
PCRF
Gr
S6a
EPC
PDN GW Serving GW
S7
S4
PDN GWServing GW
MME
SGSN
MME
SGSN
S2a/b
S11
S3
Gateway
Mobility Server
S10
Iu CP
Iu UP
Gb
S1-MME
S1-U
PA/DU Radio
RBS
BSC
RNC
Iur
eNodeB
eNode B
X2
Node B
BTS
Non-3GPP access
2G
3G
LTE
OSS
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Lecture link
www.lte.yolasite.com
www.lte.yolasite.com