GPRS General Packet Radio Service

1
GPRS (General Packet Radio Service)

• Melike Pinar Ata
• Ayse Altunkaynak
• Hasan Sezer

2
ROADMAP

• What is GPRS?
• Why GPRS?
• What are the usage areas?
• Advantages of GPRS
• GPRS technology provides the benefits
• The Speed of GPRS
• GPRS Network

3
ROADMAP

• Main Components of GPRS Network
• GPRS Communication problems
• One of the using place (Vehicle Tracking System)
• Video Conference
• 3GSM
• 3GSM Network
• What is Edge?

4
ROADMAP

• Edge Technology
• Modulation Algorithm
• Measurement for Edge
• Conclusion

5
What is GPRS?

• General Packet Radio Switching Service(GPRS) is a
  packet-switched wireless technology
• Introduced as a bearer service for Global System
  for Mobile Communications (GSM)
• -circuit switched technology
• -bandwidth 900 MHz 1800 MHz(Europe Asia),
  1900 MHz(Nort America)

6
Continue with what is GPRS

• Used for mobile phones
• From the beginning of 2001
• Offer the possibility to charge by amount of data
  sent rather than connect time
• exYou arent charged when you are reading a
  page

7
Why GPRS?

• GPRS is the world's most wide wireless data
  service
• Available now with almost every GSM networks
• It is a connectivity solution based on Internet
  Protocols that supports a wide range of
  enterprise and consumer applications

8
What are the usage areas?

• Surf on Internet
• Sending/receiving e-mails
• Video conference
• Connection with PCs and other devices
• Multimedia messages
• Location-based services

9
The advantages of GPRS?

• Spectral efficiency Through the shared use of
  radio channels, GPRS allows a better traffic
  management,service access to a higher number of
  users
• Web Browsing access to the World Wide Web

10
Cont...

• Email access to mailboxes without protocol
  conversions
• Remote LAN Access network access to applications
  with the same desktop environment
• Chat end of SMS limitations (160 characters)
• Audio Stream audio capability with commercial
  quality

11
Cont...

• File transfer using FTP, HTTP or other protocols
  without restrictions.
• Speed With a theoretical maximum of 171,2 Kbps
  (using all of the GSM 8 timeslots simultaneously)
  high gains can be achieved in the data
  transmission speed.

12
GPRS Technology Provides the Benefits

• Enables the use of a packet-based air interface
  over the existing circuit-switched GSM network,
  which allows greater efficiency in the radio
  spectrum because the radio bandwidth is used only
  when packets are sent or received.

13
Cont.. Benefits

• Supports minimal upgrades to the existing GSM
  network infrastructure for those network service
  providers who want to add GPRS services on top of
  GSM, which is currently widely deployed.
• Supports virtual private network (VPN)/Internet
  service provider (ISP) corporate site access.

14
Cont Benefits

• Supports larger message lengths than Short
  Message Services (SMS).
• Supports data rates of about 56 Kbps, which is
  greater than the traditional 14.4 Kbps rate
  available in a circuit-switched connection.

15
The speed of GPRS

• Because of the technology that is been using
  there is not an exact speed number.
• We can say as an avg. in teoritical 171.2
  kilobit/sec but in our day of tech. in our
  country it is 56 kilobit/sec
• Mostly the speed of GPRS communication is about
  with the sites speed

16
GPRS Network

17
Main components of a GPRS network

• Mobile Station (MS)
• Base Station Subsystem (BSS)
• Serving GPRS Support Node (SGSN)
• Gateway GPRS Support Node (GGSN)
• Packet Data Network (PDN)
• Equipment Identity Register (EIR)
• Visitors Location Register (VLR)
• Home Location Register (HLR)

18
Cont..

• The mobile station (MS)comprises all user
  equipment and software needed for communication
  with a Wireless telephone network.
• The Base Station Subsystem (BSS) is the section
  of a traditional cellular telephone network which
  is responsible for handling traffic and signaling
  between a mobile phone and the Network Switching
  Subsystem.

19
Cont..

• Visitor Location Register (VLR) is a database -
  part of the GSM mobile phone system - which
  stores information about all the mobiles that are
  currently under the jurisdiction of the MSC
  (Mobile Switching Center) which it serves.
• Gateway GPRS Support Node (GGSN) The General
  Packet Radio Service (GPRS) provides packet radio
  access for mobile Global System for Mobile
  Communications (GSM).

20
GPRS Communication Problems

• communication / synching problems
• Web surfing over GPRS
• You can forget to close it pop ups and viruses

21
One of the using place

• Equipments of The Vehicle Tracking System

22
Cont.. Vehicle Tracking System
23
Cont.. Vehicle Tracking System

• Q Why it uses GPRS for vehicle tracking?
• A Because it is cheap and more efficent than
  other system (e.g SMS). You pay only that you
  used.
• Q How it works?
• A your receiver take you wave signals to the
  sattelite. By the help of GPRS it sends data to
  the map system that placed in Central Station.
  Customer connected to the system and tracking
  started.

24
Video Conference

• For operators, the adoption of GPRS is a fast and
  cost-effective strategy that not only supports
  the real first wave of mobile Internet services,
  but also represents a big step towards 3GSM (or
  wideband-CDMA) networks and services.

25
3 GSM

26
What is the 3 GSM

• understood as third generation
• latest addition to the GSM family
• is a collective term for new procedures in
  communication, new standards, and new devices
• will enhance the quality and speed of services in
  mobile telephony.

27
Cont 3GSM

• enables the provision of mobile multimedia
  services such as music, TV and video, rich
  entertainment content and Internet access
• The technology on which 3GSM services are
  delivered is based on a GSM network enhanced with
  a Wideband-CDMA (W-CDMA) air interface - the
  over-the-air transmission element.

28
3GSM Network

• ITU has approved, as official 3G standards, a set
  of systems that have arisen from agreement
  between various companies, grouped under the
  general name International Mobile
  Telecommunication 2000 (IMT2000), including five
  radio-transmission technologies

29
Cont.. 3GSM Network

• IMT 2000 radio-transmision technologies
• IMT-DS Direct Sequence (referred to as UTRA-FDD,
  W-CDMA, UMTS-FDD)
• IMT-MC Multi-Carrier (referred to as CDMA2000)
• IMT-TC Time Code (referred to as UTRA-TDD) and
  China's TD-SCDMA
• IMT-SC Single Carrier (referred to as
  UWC-136/EDGE)
• IMT-FT Frequency Time (referred to as DECT)

30
Cont..

• Of these five standards, basically three
  technologies have been popularized, namely
• CDMA20004
• WCDMA5
• EDGE

31
What is Edge ?

• Enhanced Data rates for GSM Evolution (EDGE) or
  Enhanced GPRS (EGPRS) is a digital mobile phone
  technology that allows increased data
  transmission rates and improved data transmission
  reliability.
• EDGE has been introduced into GSM networks around
  the world since 2003

32
Cont..

• EDGE can be used for any packet switched
  application, such as internet. High-speed data
  applications such as video services

33
Cont..
34
Technology

• Although EDGE requires no hardware or software
  changes to be made in GSM core networks, base
  stations must be modified. EDGE compatible
  transceiver units must be installed and the base
  station subsystem (BSS) needs to be upgraded to
  support EDGE.

35
Cont

• New mobile terminal hardware and software is also
  required to decode/encode the new modulation and
  coding schemes and carry the higher user data
  rates to implement new services.

36
Cont..
37
Cont..

• Further enhancements to GSM networks are provided
  by EDGE technology. EDGE provides up to three
  times the data capacity of GPRS.
• Triple their data rate per subscriber, or add
  extra capacity to their voice communications.
  EDGE uses the same TDMA (Time Division Multiple
  Access) frame structure.

38
Cont..

• EDGE is a simple software upgrade
• Due to very small incremental cost of including
  EDGE capability in GSM network deployment,all new
  GSM infrastructure deployments are also EDGE
  capable and nearly all new mid- to high-level GSM
  devices also include EDGE radio technology.

39
Cont..

• EDGE allows the delivery of advanced mobile
  services such as the downloading of video and
  music clips, full multimedia messaging,
  high-speed color Internet access and e-mail on
  the move.

40
Cont..
41
Modulation Algorithm

• 8PSK (8 Phase Shift Keying) is a phase modulation
  algorithm
• Phase modulation is a version of frequency
  modulation where the phase of the carrier wave is
  modulated to encode bits of digital information
  in each phase change.

42
Cont..

• The "PSK"in 8PSK refers to the use of Phased
  Shift Keying which is a form of phase modulation
  which is accomplished by the use of a discrete
  number of states. 8PSK refers to PSK with 8
  sates. With half that number of states, you will
  have QPSK (Quadrature Phase Shift Keying). With
  twice the number of states as 8PSK, you will have
  16PSK.

43
Cont..

• Because QPSK has 8 possible states 8PSK is able
  to encode three bits per symbol.
• 8PSK is less tolerant of link degradation than
  QPSK, but provides more data capacity.

44
Measurement for Edge

• Provides a solution for measuring non-constant
  amplitude signals
• EVM Error Vector Magnitude
• A new measurement has been defined for EDGE. This
  new measurement is the
• EVM is a measure used to quantify the performance
  of a digital radio transmitter or receiver. 

45
Cont..

• The HP 8944x was the first instrument to
  prototype the EVM measurement and will probably
  be the first to support the standardized
  measurement.

46
Conclusion

• Its new technology and very speed
• Changing our life in good way with the growth
  wireless of the technology
• We can connect to the internet with this device
  in anywhere
• WE LOVE GPRS

47
Questions

• Do you prefer using GPRS why?
• What are the differences between 3G and GPRS?
• What usage areas has GPRS?

48
FOUNTAIN

• http//www.google.com.tr/search?hltrdeflenqde
  fineGPRSsaXoiglossary_definitioncttitle
• http//www.comtechm2m.com/m2m-technology/gprs-tuto
  rial.htm
• http//abonelik.tnn.net/gprs_faq.asp
• http//www.gsmworld.com/services/index.shtml