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GPRS AND EDGE

GPRS AND EDGE. BADAL ACHARYA(040-257) SANTOSH KUMAR NIMALA(040-259). WHAT IS GPRS. TE. MT. MS=TE+MT. The terminal equipment and the mobile terminal combinedly known as mobile station. As per ETSI standard document for GPRS TE and MT terms are not used.

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GPRS AND EDGE

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  1. GPRSANDEDGE BADAL ACHARYA(040-257) SANTOSH KUMAR NIMALA(040-259)

  2. WHAT IS GPRS

  3. TE

  4. MT

  5. MS=TE+MT • The terminal equipment and the mobile terminal combinedly known as mobile station. • As per ETSI standard document for GPRS TE and MT terms are not used. • By saying MS in GPRS ,it is assumed that TE is available.

  6. TYPES OF MS

  7. CONTD…..

  8. Evolution from GSM to 3G The GSM Growth Phases 3G EDGE GPRS 2.5G HSCSD GSM 2G

  9. GSM Evolution 2G 2.5G 3G UMTS GSM GPRS EDGE UMTS 5 MHz carrier 2 Mbps peak data rates New IMT-2000 2 GHz spectrum GSM 200 KHz carrier 8 full-rate time slots 16 half-rate time slots GPRS 200 KHz carrier 115 Kbps peak data rates EDGE 200 KHz carrier Data rates up to 384 Kbps 8-PSK modulation Higher symbol rate HSCSD HSCSD Circuit-switched data 64 Kbps peak data rates

  10. MAIN ADVANTAGES FOR OPERATORS • More Revenue : • By providing more than a mobile connection. • Also operator can charge on the basis of type and amount of content accessed. • Huge Potential Market for Data Sevices : • Mobile Phone and Internet, both are fastest growing technologies and GPRS is the merger of two. • Fast Roll-out and Continuous Network Expansion : • GPRS is an integral part of GSM. • GPRS uses excess voice capacity for data : • GPRS Packets are transmitted in short, free periods between busy hour calls.

  11. GPRS Vs GSM GPRS Vs GSM 1. SUPPORTS BOTH CKT. Only circuit switched. SWITCHED as well as packet switched service. 2. MS Utilizes Automatic No re-transmission is retransmission (ARQ) at provided. data link layer to re-transmit error frames. 3. Multiple time slots can be Single time slot per user. allotted to a single user 4. One time slot can be allotted Single time slot per user. to several users. 5. Charging/ billing more complex Simple time-based billing. (Volume based, Q.O.S. based)

  12. TYPICAL GPRS SERVICES * Communications-E-mail, fax, intranet/ internet access. * Value added services -Information services, games, e-commerce. * Location-based applications -Navigation, traffic conditions, airline/rail schedule, location finder. * Vertical applications -Freight delivery, fleet management, sales-force automation * Location sensitiveA user nearing a cinema hall or Advertising -a restaurant receives flashes of advertisement

  13. GPRS Interface

  14. Different GPRS Capacity Types Circuit Switched TRX 1 CCCH TS TS TS TS TS TS TS Territory Packet TRX 2 TS TS TS TS TS TS TS TS TS TS TS TS Switched Territory Additional Dedicated GPRS GPRS GPRS Capacity Capacity Capacity Territory border moves based on Circuit Switched traffic load

  15. Routing Area • RAI = MCC+MNC+LAC+RAC

  16. GPRS Mobility Management • Routing Area : • The RA is a new concept for tracing the MS location. • Cell =< RA =< LA served by one SGSN • RAI = MCC + MNC + LAC + RAC • Every time the MS sees the new RAI is has to initiate the RA • update procedure.

  17. SECURITY IN GPRS • Authentication of the subscriber • IMEI Checking • User Identity Confidentiality (TMSI in GSM, P-TMSI in GPRS) • Ciphering of the data traffic between MS and SGSN • Private IP Addressing in the GPRS backbone. • Ciphered links and authentication between nodes in the GPRS Backbone. • Screening of packets coming from the external networks (Firewall). (P-TMSI is used to derive the Temp Logical Link Identity (TLLI))

  18. The Abbreviation GPRS = General Packet Radio System EGPRS = GPRS + EDGE modulation

  19. EDGE – Provide3Gservicestoday • Provide 3G services with existing licenses • New modulation optimized for wireless data services • Link adaptation: Take highest possible rate • Covered by existing GSM licenses • Same channel structure, network infrastructure, frequency planning and protocol as today’s GSM

  20. Evolution to EDGE SMS G/IW MSC HLR Gd AUC M S PUC BTS BSC MSC/VLR Gr ISP Network Gs Gb EDGE TRU Gi M S SGSN GGSN Gn CorporateNetwork Gn Backbone Network

  21. EDGEincreasescapacity voice voice voice voice voice Standard GSM Transceiver voice voice voice Data voice voice Free TS Free TS EDGE Transceiver

  22. SystemupgradeforEDGE EDGE TRU B S C R B S BSC Software Upgrade EDGE enabled RBS

  23. WhatEDGEwouldmeantosubscribers • Streaming Applications • Very high speed downloads • Corporate Intranet connections • Quicker MMS • Video Phone • Vertical corporate applications – Video • Conference, Remote presentations

  24. THANKYOU

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