EDGE Technology: Evolutionary path to 3G services.ppt

7/30/2019 EDGE Technology: Evolutionary path to 3G services.ppt

1/17

Prepared byGyanaraj DasFinal Year Student

Orissa Enginering College

ORISSA ENGINEERING COLLEGE


2/17

[2]

Evolutionary path to 3G services for GSM and TDMA

operators

Builds on General Packet Radio Service (GPRS) air

interface and networks

Phase 1 (Release99 & 2002 deployment) supports best

effort packet data at speeds up to about 384 kbps

Phase 2 (Release2000 & 2003 deployment) will add

Voice over IP capability


3/17

[3]

GPRS Air link

General Packet Radio Service (GPRS)

Same GMSK modulation as GSM

4 channel coding modes

Packet-mode supporting up to about 144 kbps

Flexible time slot allocation (1-8)

Radio resources shared dynamically between speech

and data services

Independent uplink and downlink resource allocation


4/17

[4]

EDGE Airlink

Extends GPRS packet data with adaptive

modulation/coding

2x spectral efficiency of GPRS for best effort data

8-PSK/GMSK at 271 ksps in 200 KHz RF channelssupports 8.2 to 59.2 kbps per time slot

Supports peak rates over 384 kbps

Requires linear amplifiers with < 3 dB peak to average

power ratio using linearized GMSK pulses Initial deployment with less than 2x 1 MHz using 1/3

reuse with EDGE Compact as a complementary data

service


5/17

[5]

Conversion of GPRS to EGPRS

EGPRS introduces changes to GPRS only on the base station system part of the

network.


6/17

[6]

GPRS and EDGE: A comparison of technical data.


7/17[7]

EDGE Modulation Techniques


8/17[8]

Coding schemes for GPRS and EGPRS


9/17[9]


10/17

[10

]

Addressing Window

Protocol stalling. (Legend: MAC, Mobile allocation channel; PCU,

Packet control unit; RLC, Radio link control)


11/17

[11

]

(Legend: CS, coding scheme; EGPRS, enhanced GPRS; MCS,

modulation coding scheme)

Interleaving


12/17

[12

]

Requirements on EDGE

EDGE- and non-EDGE-capable mobile stations should be able toshare one and the same time slot.

EDGE- and non-EDGE-capable transceivers should be deployable

in the same spectrum.

A partial introduction of EDGE should be possible.

It was so decided that two classes of terminals should be

supported by the EDGE standard:

A terminal that provides 8PSK capability in the downlink only,

and

A terminal that provides 8PSK in the uplink and downlink.


13/17

[13

]

EDGE Benefits

Short-term benefits: Capacity and performance

Mid-term benefits: Complementary technology

Long-term benefit: Harmonization with WCDMA

For Operator:

Migration to wireless multimedia services

Improved customer satisfaction

Quick network implementation

Optimized network investment as GSM enhancement


14/17

[14

]

Benefits to End Users

Improved quality of service

Personal multimedia services

Potentially lower price per bit


15/17

[15

]

Conclusion

EDGE is a 3G technology offering a commonmigration path and convergence for GSM and

TDMA operators

EDGE Compact can be deployed with < 2x 1 MHz

of spectrum EDGE supports IP packet data at peak rates > 384

kbps

Voice over IP is planned for EDGE R2000

standards


16/17

[1] http://www.mobileipworld.com. [2] Data capabilities for GSM Evolution to UMTS,

November19, 2002. http://www.rysavy.com [3] Nokia, A comparison between EDGE and

Alternative Technologies, June 5,2001.

http://www.3Gamericas.org [4] Enhanced Data Rates for GSM Evolution EDGE;

Nokias vision for a service platform supportinghigh-speed data applications.http://www.nokia.com

[5] EDGE;Introduction of high-speed data inGSM/GPRS networks.http://ericsson.com. [6]IEEE Personal Communications June 1999 [7] http://gsmworld.com

[16

]


17/17

[17

]

Thank You!

Documents

EDGE Technology: Evolutionary path to 3G services.ppt