Seminar Presentation on Enhanced Data Rates for GSM Evolution(EDGE). 19 slides. Complete coverage on edge technology. Description using schematic diagram and graphs.

1. Enhanced Data Rates For GSM
Evolution(EDGE)
Presented By : Sidharth Mahapatra
Guided By : Prof. Smita Mohanty

2. Free Powerpoint Templates
Page 2
 Enhanced data rates for GSM Evolution (EDGE)
or Enhanced GPRS (EGPRS).
 It is a digital mobile phone technology that allows
improved data transmission rates and reliability.
 EDGE is considered as pre-3G radio technology
and was deployed on GSM networks beginning in
2003 – initially by Cingular (now AT&T) in the
United States.
 EDGE can function on any network with GPRS
deployed on it, provided the carrier implements the
necessary upgrades.

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 It is a technology that gives GSM the capacity to
handle services for the third generation of mobile
network.
 It enables services like multimedia file transfer, web
browsing and video conferencing to be easily
accessible from wireless terminals.
 Using EDGE, operators can handle triple
subscribers than GPRS, triple their data rate and add
extra capacity to their voice communications.
 EDGE is capable of offering data rates of 384 kbps
and theoretically, up to 473.6 kbps.

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 EDGE provides an evolutionary migration path
from GPRS to UMTS.
 Broadband-like speed is achievable on the current
200 kHz GSM radio carrier.
 Easy to offer global service to subscribers – 82% of
global market is GSM. Hence easy roaming and
billing.
 Economic forces - less costly than upgrading to third
generation technology.

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Voice
SMS
Internet
Access
MMS
Streaming
Bandwidth
Services

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PC or
LAPTO
P
MOBIL
E MS
C
BSC
GGS
N
SGS
NBT
S
BT
S

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Powerpoint Templates
No hardware or software changes to be made in GSM core
networks, only base stations must be modified.
EDGE compatible transceiver units must be installed in
Base Station Subsystem hardware.
Software upgrades to the Base Station Controller (BSCs)
and Base Stations (BS). EDGE is just an “add-on” to the
BSS.
A new modulation scheme “8-PSK” is introduced to
provide high data rate and high spectral efficiency.

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To achieve higher bit rates than that of GPRS, the existing
GMSK modulation technique must be modified.
EDGE is specified to reuse the channel structure, width,
coding and existing mechanism of GPRS.
The modulation technique used for EDGE i.e. “8-PSK”
fulfills all those requirements.
This makes it possible to integrate new EDGE channels
into an existing frequency plan of GSM network.

9. Page 9
I/Q Diagram showing EDGE Modulation Benefits
Q
P
Q
P
(000)
(001)
(010)
(011)
(111)
(110)
(101)
(100)
1
0

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The 8-PSK modulation is a method in which 1 symbol carries 3
bits of information.
The total data rate is therefore increased by a factor of three.
The distance between the symbols are shorter than that of
GMSK. Hence increase the risk of misinterpretation of symbols.
Each set of bits is just one bit different from its neighbor. So if
the radio receiver makes an error in reading the symbol, most
likely this will result in only one bit being misinterpreted.

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MIA HSCSD GPRS EDGE UMTSD. C.FAX / DATA
/SMS
9.6
Kbps
19
Kbps
22.8
Kbps
57.6
Kbps
170
Kbps
473.6
Kbps
2000
Kbps

12. Powerpoint Templates
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Technical Difference Between GPRS and EDGE
EDGE is a subsystem within the GSM standard. But
GPRS has introduced Packet-Switched Data into GSM
networks.
EDGE is an “add-on” to GPRS and can not work alone.
EDGE can transmit three times as many bits as GPRS
during the same period of time.
EDGE requires less number of radio resources to support
the same traffic, thus freeing up capacity for more data and
voice services.

13. Technical Difference Between GPRS and EDGE
GPRS uses 4 coding schemes whereas EDGE uses 9
coding schemes.
GPRS and EDGE have different protocols and behavior on
the base station system side.
GPRS allows average data rates of 115 Kbps and
theoretically up to 160 Kbps whereas EDGE offers average
data rate of 384 Kbps and theoretically up to 473.6 Kbps.
GPRS and EDGE share the same symbol rate but the
modulation bit rate differs.

14. Powerpoint Templates
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0
10
20
30
40
50
60
70
CS1
CS2
CS3
CS4
MCS1
MCS2
MCS3
MCS4
MCS5
MCS6
MCS7
MCS8
MCS9
GPRS EDGE
Coding Schemes for GPRS and EDGE
Kbps

15. Powerpoint Templates
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 User Benefits
1. Speed
2. An “always-on” connection
3. Value
4. Coverage
5. Phone selection

16.  Operator Benefits
1. Spectrally efficient and flexible
2. Ease of upgrade
3. Compatibility
4. Cost-efficiency
5. Volumes

17. EDGE filling the gap between GPRS and 3G.
EDGE evolution can satisfy increased data demand and
produce increased revenue.
EDGE Evolution will improve performance and coverage
even further, with bit-rates of up to 1 Mbit/s.
EDGE will provide the solution for operators wanting to
increase the data capacity in their GSM network prior to
UMTS deployment.

18.  Operator Benefits
1. Spectrally efficient and flexible
2. Ease of upgrade
3. Compatibility
4. Cost-efficiency
5. Volumes
Any Questions ?