GPRS & EDGE
Presented by
M.V.SATISH KUMAR, SDE
Madurai.
GPRS
(General Packet radio service)
General Packet Radio Service
(GPRS) - Background
• Data rate on GSM network is 9.6 Kbps.
• Data rate on GPRS is max of 20 Kbps per
timeslot. Data rate can be increased by using
more than one timeslot by a user.
• GSM Circuit switch data is normally billed on
time basis.
• GPRS packet switch data is normally billed on
volume basis.
GPRS Network Architecture
HLR
BTS
SCP
SIG
PSPDN
BSC
SGSN GGSN
PCUSN
SGSN of
CGF other
PLMN
Packet Control Unit Support Node
(PCUSN) functions
Provide the interworking function
between two interfaces
Agprs interface between BSC & PCUSN
(Synchronous)
Gb interface between PCUSN & SGSN
(Asynchronous)
Serving GPRS Support Node
(SGSN) functions
LIG
DNS
SGSN
GGSN
HLR
MS
CGF
GMLC
PCUSN
Gateway GPRS Support Node
(GGSN) functions
Charging
Gateway
Function
DHCP Radius
GGSN
SGSN Internet
GPRS Attach Procedure
MS SGSN
PCUSN
HLR
GPRS Attach Request
Update Location
Security Functions ( Auth Request <-, Auth Response ->)
Insert Sub Data
Insert Sub data Ack
Update Location Ack
GPRS Attach Accept
GPRS Attach complete
8
Packet Data Protocol (PDP) Context
Activation DHCP
DNS
MS SGSN
BSS GGSN
Tunnel
Activate PDP Context Request
Security Functions
Create PDP Context Request
Create PDP Context Response
Activate PDP Context Accept
(PDP type, PDP address, QoS Negotiated)
9
Packet Data Protocol Context Activation
3. @ GGSN IP
DNS
DHCP
SGSN
@GGSN IP
@ MS Internet
@ MS www.yaho
GGSN Y o.com
GGSN X
wapsouth.
cellone.in
Mobile
portalsouth. @ SGSN
Subscribed
cellone.in PDP @ MS
gprssouth. contexts CGF
cellone.in
In this diagram, @ represents
“the IP address of”
GPRS Mobile
• Class A
– MS supports simultaneous operation of
GPRS and GSM services
• Class B
– MS able to register with the n/w for both
GPRS & GSM services simultaneously.
It can only use one of the two services
at a given time.
• Class C
- MS can attach for either GPRS or GSM
services
Conclusions FOR GPRS
• GPRS is a part in the transition from 2G to
3G
• With little cost & major benefits, GPRS
provides easy solution to ISPs
• Will pave the way for EDGE & UMTS
EDGE
(Enhanced Data rate for GSM
Evoution)
What is EDGE ?
GPRS
CS-1 8 kbps EDGE is an extension of GPRS.
CS-2 12 kbps The 4 GPRS Coding Schemes are extended with
CS-3 14.4 kbps
9 new EDGE Modulation and Coding Schemes
CS-4 20 kbps EDGE
MCS-1 8.8 kbps
MCS-2 11.2 kbps
MCS-3 14.8 kbps
Maximum Throughput is
increased from 20 kbps MCS-4 17.6 kbps
to 59.2 kbps per TS MCS-5 22.4 kbps
MCS-6 29.6 kbps
EDGE = Enhanced Data rate for GSM
Evolution MCS-7 44.8 kbps
MCS-8 54.4 kbps
GPRS = General Packet Radio Service
MCS-9 59.2 kbps MCS-9
Improving GPRS Performance with 8-
PSK Modulation Coding Schemes
GMSK Modulation 8-PSK Modulation
GPRS EDGE
8 CS-1 8.8 MCS-1
12 CS-2 GMSK 11.2 MCS-2
14.4 CS-3 14.8 MCS-3
20 CS-4 17.6 MCS-4
22.4 MCS-5
Header + Protection MCS-6
29.6
User Payload 8-PSK 44.8 MCS-7
54.4 MCS-8
Maximum Throughput per TS is increased
from 20 kbps to 59.2 kbps. 59.2 MCS-9 MCS-9
Header + Protection
User Payload
Nortel EDGE Software Solutions
Throughput highly depends on radio quality
• Measurement
MS measures the signal quality of
each received block.
• Report
MS reports the signal measurement
to PCU.
• Adaptation
PCU selects the accurate MCS
based on MS measurements.
GPRS Settings & Services
Places where GPRS network
elements available
– Nortel PCUSN at Madurai, Coimbatore and
Vellore in TamilNadu Circle.
– Motorola PCUs & Huawei PCUs are inbuilt
with respective BSCs in TamilNadu Circle.
– SGSN at Madurai & Coimbatore for
TamilNadu Circle.
– GGSN at Chennai for the South Zone.
– MMSC & WAP server at Chennai for South
Zone
Settings to be configured in the
handset
– WAP setting
– Portal setting
– GPRS setting (For browsing with
computer)
– MMSC setting
Procedure for downloading the settings
– Send SMS “ make model “ to 58355.
– Ex. Send SMS
sonyericsson T610
to 58355.
Settings will be downloaded from OTA.
(PIN is 1111)
WAP setting in the handset
Access Point Name : bsnlwap
IP address : 10.220.67.131
Port : 8080
User name :
Password :
Homepage :
http://wap.cellone.in
.
Portal setting in the handset
Access Point Name : bsnlportal
IP address : 10.220.67.131
Port : 8080
User name :
Password :
Homepage : http://wap.cellone.in
GPRS settings for browsing
through PC
Access Point Name : bsnlnet
User name :
Password :
Dialling digits in Computer : *99***1# or *99#
MMS setting
Access Point Name : bsnlmms
IP address : 10.210.10.11
Port : 8080
User name :
Password :
Homepage : http://bsnlmmsc.in:8514
BSNL live settings
Same like bsnlwap
Access Point Name : bsnllive
IP address : 10.220.67.131
Port Number : 8080
User name :
Password :
Homepage : http://bsnllive.net
Connecting mobile with
computer
• Using Infrared (IR) port
• Using Bluetooth.
• Using data cable.
GPRS services through content
providers
Services offered by the content providers
through GPRS
Wallpapers & Animations
Polytones
Truetone
Video
Javagames
Themes
Charging for the services offered
by the content providers
The content providers send the charging
SMS through SMSC for the GPRS
services.
Downloading of GPRS services from CPs
Mobile sub WAP
SGSN GGSN
(with GPRS) Gateway or SDP
Internet
cloud
charging
SMSC GPRS
Internet cloud Content
Providers
GPRS service request (downloading of wallpaper,etc)
Service offered by the content provider
Data card
• To find speed
1.www.speedtest.net
2.www.abeltronica.com
• To find Balance
• Send “data 3g” to 53733
• Send “data 2g” to 53733(for 2g)
3G Data card (Teracom)settings
• Open BSNL 3G Appln.
• Go to settings>connections>profile
• Two profiles will be displayed
• 1.BSNL 3G
• 2.BSNL3GSOUTH
• Select BSNL 3G Profile and click set
default button then apply
• Now go to internet and connect
3G Data card (Micromax) settings
• Open USB modem appln.>click
settings>select connection profile >add
• Under new connection profile check new
profile>click next and type as below under
profile menu
• Profile name : bsnlnet
• Dial no :*99#
• Apn : bsnlnet
• Auth type :none
Thank you
