King Saud University College of Engineering Electrical Engineering Department EE 424

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King Saud UniversityCollege of
EngineeringElectrical Engineering DepartmentEE
424

• Semester Project
• GPRS

InstructorDr. Adel A. AliWritten by
Thamer Al-Dawood Anwar Alomar 422004801
421008061
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• Outlines
• Introduction.
• Key Features of GPRS.
• Advantages of GPRS.
• Overview of GPRS service.
• How GPRS Works?
• Summary.

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• Introduction
• Need for GPRS
• Now, there has been an impressive growth in
  the mobile telephony, new
  technologies are being introduced. There
  is going to be a tremendous need for wireless
  data service with high performance.
• What is GPRS?
• Generalized Packet Radio Services was
  introduced in 2001and standardized in ETSI.
• GPRS is based on a digital wireless technology
  called GSM.

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• Key Features of GPRS
• User Specific Features
• Speed data transmission speed171.2 kbps
• Immediacy GPRS is referred as always connected
  service. No dial up connection needed.

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Continue

• Network Specific Features
• Packet Switching GPRS implements this technology
  overlying the circuit switched of GSM.
• Spectrum Efficiency The actual number of users
  supported depends on the application used.
• GPRS should improve the peak time capacity of
  GSM network.

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• Advantages of GPRS
• Changing of the trend from circuit switched
  transmission to the packet switched transmission.
• GPRS provides very high speed of data
  transmission.
• Packet switching of GPRS helps in the immediacy.
• GPRS improving the peak time capacity of the GSM
  network.

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• Overview of GPRS Service
• New GPRS radio channel are allocation of these
  channels is flexible.
• GPRS allows SMS transfer over GPRS radio
  channels.
• With GPRS enable mobile phones, services are
  received faster than GSM phones.
• Three classes of of GPRS MSs are supported
• Class A MS.
• Class B MS.
• Class C MS.

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• How GPRS Works?
• Define the main component of GPRS.
• GSN (GPRS Support Node).
• SGSN (Serving GPRS Support Node).
• GGSN (Gateway GPRS Support Node).

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• Sending data from MS to host
• SGSN check the MS authorization
• GPRS attach
• PDP address
• Session information PDP type,PDPaddress,

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• Sending packet from MS to SGSN
• SGSN makes the following
• Packet encapsulate
• Examined the PDP address
• Sending the packet to GGSN

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• GGSN receives the packet and makes the following
• De-capsulate
• Route the packet to IP network
• IP routing mechanism
• By the same manner we can sending data from host
  to MS

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Summary

• GPRS is a new technology of wireless system
• GPRS provide immediacy of service implementation
• GPRS support time division multiple access
• GPRS phase 2 more advanced phase 1

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• Knowledge is power