GSM TOWARDS LTE NETWORKS
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Transcript GSM TOWARDS LTE NETWORKS
GSM TOWARDS LTE
NETWORKS
Lecture # 5
MOBILE TRAFFIC VOICE
AND DATA
07-14
Subscriber traffic in mobile access networks
30
Yearly Exabytes
25
Exabyte = Giga Giga Byte
20
Data
15
10
Voice
5
0
2007
2008
2009
2010
Source: Internal Ericsson
DVB-H, Mobile WiMax, M2M and WiFi traffic not included
This slide contains forward looking statements
2011
2012
2013
2014
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
3G VISION - APPLICATION
Application
Multimedia Message Service (MMS)
Email
Video phone
Video streaming
Any service from the Internet
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
2G TOWARDS 3G
Higher data bandwidth requirement
Anticipated subscriber demand for
Audio/Video streaming
Other multimedia services
Collaborative services
Location services
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
3G–PRINCIPAL 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!
Example: 3G SERVICES (UMTS)
Universal Mobile Telephone System (UMTS)
Four QoS classes of services
Conversational Class
Streaming Class
multimedia, video on demand, webcast
Interactive Class
Voice, video telephony,video gaming
WWW browsing, database access, online gaming
Background Class
email, SMS, file downloading
2.5 GPRS VOICE / data
ARCHITECTURE
Voice Calls Path
Data Calls Path
Packet Data14.4 Kp/s
LTE/SAE Architecture
3G NETWORK
IP networks
Only
PS Domain
shown
Gi
HLR/HSS
Gr
Gn
Gn
GGSN
SGSN
Gb
Iu
BSC
RNC
BTS
Node B
2G
3G
Iur
LTE/SAE Architecture
HSPA (High Speed Packet Access)
IP networks
Only
PS Domain
shown
Gi
HLR/HSS
PCRF
Gr
Gx
Gn
GGSN
SGSN
Gb
Iu CP
Iu UP
BSC
RNC
BTS
Node B
2G
Optimizing the 3G/HSPA
payload plane for
Broadband traffic
Iur
3G
Release 7 ”Direct Tunnel”
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
1-BACKBONE ROLL OUT
(Packet Network) Migration Steps
2-DATA NETWORK MIGRATION
2nd GENERATION NETWORK
rd
3
GENERATION NETWORK
2G & 3G NETWORK
TOWARDS IP NETWORK
3-CORE NETWORK MIGRATION
Classical MSC Architecture
(old name: Non-Layered Mobile Core Network/
’Monolitic’ Architecture)
MSC Server
Classic MSC
MSC
Mobile Softswitch Solution
(old name: Layered Mobile Core Network
Architecture)
(Control and Switching)
MSC-S
(Control)
Mobile Media Gateway
MGw
(Switching)
Control Layer
MSC-S
MSC
MGw
MSC
MSC
TDM
MSC
MSC
MGw
IP/ATM/TDM
MGw
MGw
MGw
INCREMENTAL MIGRATION
In Pakistan, Most operators have incrementally
Migrated.
Two strategies have been adapted
GPRS adapted by Warid Telecom.
EDGE adapted by Ufone.
MOBILE SOFT SWITCH SOLUTION
FOR 3G CORE NETWORK
One
of the most efficient way to upgrade for
3G core networks.
Layered
MSS
architecture for ease
is only for Mobile core networks
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.
MSS LAYERS
1. Control Layer
2. Connectivity Laye
3. Application Layer
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
resources in the connectivity layer
required
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.
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.
MSS ARCHITECTURE
MSS NODES
1.
MSC-S (Mobile Switching Server)
2.
M-MGW (Mobile Media Gateway)
MSC-SERVER
MSC-S
is the control layer device of the 3G
network.
It contains all call and control service logic
such as:
ѣ Charging analysis
ѣ Bearer selection
ѣ Route analysis
ѣ Media Gate way selection
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.
MSC-SERVER
Data Base
nodes
Radio Sites
Other MSC-S
MSC-S
M-MGW
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.
SIGNALING AND PROTOCOLS
MAP
BSC
BSSAP
MSC
Server 1
Data Base
Nodes
BICC /
MAP
MAP
T-MSC
Server 1
RANAP
GCP
GCP
RNC
M-MGW 1
M-MGW 2
ISUP
SIP
PSTN/ISDN/PL
MN
INTERFACE & PROTOCOLS
MSC
Server 1
BSC
A
RNC
Lu CS
Nc
Mc
M-MGW 1
T-MSC
Server 1
Mc
Nb
PSTN/ISDN/PLMN
M-MGW 2
Control Plane
User Plane
POI
3G CALL SETUP
Call Setup Scenario : Subscriber “A” is a calling
party from PTML and Subscriber “B” is called
party that is related to PSTN
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
1. SETUP
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
2. RNC send SETUP message to MSC-S
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
3. SEIZE RESOURCES
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
4. M-MGW reply by ACK message
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
5. MSC-S inform RNC that call is in
progress by CALL PROCESSED message
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
6. MSC-S send ASSIGNMENT message
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
7. RNC send ERQ message to selected
M-MGW
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
8. M-MGW setup virtual connection
with RNC and reply by ECF message
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
9. RNC send ASSIGNMENT
COMPLETE message
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
10.MSC-S 1 send IAM message to
MSC-S 2
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
11.T-Server send SEIZE RESOURCE
message to selected M-MGW
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
12. M-MGW send reply by ACK
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
13. T-Server forward IAM to
terminating end i.e. PSTN
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
14. PSTN reply by ACM
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
15. T-Server forward ACM to MSC-S
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
16. MSC-S order M-MGW to through
connection back to party “A”
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
17. MSC-S alert party “A” by sending
ring back tone and party “B” by ring
tone
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
18. As “B” party answer the call and
send ANM to T-Server
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
19. T-Server inform ANM to MSC-S
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
20. MSC-S order to through both way
speech path
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
21. MSC-S order to RNC to connect call
to traffic channel by CONNECT
message
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
22. RNC send ACK
MSC
Server 1
T-MSC
Server 1
PSTN/ISDN/PLM
N
RNC
M-MGW 1
M-MGW 2
IP
BS
23. The UMTS call path has been
established
GSM Toward LTE Networks
LTE/SAE Architecture
LTE/SAE Architecture
Product dimension
PA/DU Core & IMS
IP networks
SGi
HLR/HSS
HLR/HSS
”HLR/HSS”
Gr
PCRF
PCRF
S6a
S7
EPC
S4
SGSN
SGSN
S3
MME
MME
S11
”Mobility Server”S10
Gb
Iu CP
PDN
GW
PDN GW
Serving GW
Serving
GW
”Gateway”
Iu UP
S1-MME
BSC
RNC
Iur
S1-U
RBS
eNodeBB
eNode
BTS
2G
S2a/b
PA/DU Radio
X2
Node B
3G
LTE
OSS
Non-3GPP access
Lecture link
www.lte.yolasite.com