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Comparative Study on GSM,GPRS & CDMA Technology

Comparative Study on GSM,GPRS & CDMA Technology. Global System for Mobile Communications (GSM). INTRODUCTION. GSM is a mobile telephony network based on the cellular concept. Users can place and receive calls without being fixed to a

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Comparative Study on GSM,GPRS & CDMA Technology

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  1. Comparative Study on GSM,GPRS & CDMA Technology

  2. Global System for Mobile Communications (GSM) INTRODUCTION GSM is a mobile telephony network based on the cellular concept. Users can place and receive calls without being fixed to a specific location or wired to a physical connection. To supply this capability, a GSM network consists of four Basic components: •The Mobile Station (MS). •The Base Station Subsystem (BSS). •The Network and Switching Subsystem (NSS). •The Operation and Support Subsystem (OSS).

  3. ARCHITECTURE PSDN AUC NSS ISDN VLR HLR EIR PSTN MSC PLMN A Interface BSC OSS Abis interface BTS UM interface MS SIM

  4. 1)Mobile Station-A Mobile Station consists of two main elements i.e mobile equipment or terminal and Subscriber Identity Module (SIM). • 2)The Base Station Subsystem -The BSS connects the Mobile Station and the NSS. • 3)The Network and Switching Subsystem-Its main role is to manage the communications between the mobile users and other users, such as mobile users, ISDN users etc. • 4) The Operation and Support Subsystem (OSS)-The OSS is connected to the different components of the NSS and to the BSC, in order to control and monitor the GSM system.

  5. FUNCTIONS • 1)Transmission. • 2)Radio Resources management (RR). • 3)Mobility Management (MM). • 4)Communication Management (CM). • 5)Operation, Administration and Maintenance (OAM). • SERVICES • 1) Teleservices. • 2) Bearer services. • 3) Supplementary Services

  6. GENERAL PACKET RADIO SERVICE (GPRS) INTRODUCTION General Packet Radio Services (GPRS) is a standardized packet switched data service for GSM. The GPRS provides us with: 1) Fast coverage rollout, adding packet switching nodes to an existing GSM network. 2) Efficient use of scarce radio resources

  7. GPRS design is to support burst data transfer. Two new elements are added to keep packet data traffic separated from traditional GSM voice and data. i.e. a) The Serving GPRS Support Node (SGSN) b) The Gateway GPRS Support Node (GGSN). The migration path from GSM to GPRS requires: a) Additional packet switching nodes b) Software upgrades in the base station subsystem c) Transmission links can be reused d) Station Controllers (BSCs) for both GSM and GPRS.

  8. PSTN/SST BTS MSC Internet IP Network BSC IP BASED GPRS BACKBONE Notebook SGSN BTS Cisco GGSN ARCHITECTURE

  9. Data Transfer Time { in seconds} GSM {9.6 Kbps} GPRS {56 Kbps} E-mail 25 4 Web Page 42 7 Photo 83 14 Microsoft Word 250 43 Microsoft PowerPoint 833 143 Audio clip 1,667 286 Video clip 3,333 571 Data Transfer Comparison

  10. ADVANTAGES • Faster Data Transfer Rates • Always-On Connection • Robust Connectivity • Broad Application Support • Security Support

  11. CODE DIVISION MULTIPLE ACCESS (CDMA) INTRODUCTION CDMA is a "spread spectrum" technology, allowing many users to occupy the same time and frequency allocations in a given band/space. The spectral spreading of the transmitted signal gives to CDMA its multiple access capability. CDMA is a form of Direct Sequence Spread Spectrum communications

  12. Public Wired Phone network (PSTN) Wireline Telephone Base Stations Switch MobileStation Base Stations Controller Other Cellular Switches Intelligent Add on Functions & Databases ARCHITECTURE

  13. BENEFITS Outstanding Voice and Call Quality Greatest Coverage for Lower Cost Packet Data Longer Talk Time, Longer Battery Life and Smaller Phones Fewer Dropped Calls Improved Security and Privacy Contd…

  14. Greater Capacity Reduced Background Noise and Interference Rapid Deployment

  15. CONCLUSION GSM has been the catalyst in the tremendous shift in traffic volume from fixed networks to mobile networks. GPRS cost is less than circuit- switched services since communication channels are being used on a shared basis and also the packets are need-based rather than dedicated only to one user. CDMA, for Code Division Multiple Access, is different than those traditional ways in that it does not allocate frequency or time in user slots but gives the right to use both to all users simultaneously.

  16. Thank you!!!

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