what is gprs?architecture, subsystem, module, application.

What is GPRS? 

GPRS  full form (general packet radio service).  It is a wireless communication network.  In a mobile network, through GPRS we can send or receive data or information from one place to another.  GPRS is a 2.5G network (GPRS network) as it is a network between 2nd generation and 3rd generation.  Data rates in GPRS range from 56 kb / s to 114 kb / s but in reality, the speed (speed) of GPRS is very low.  It is used to access internet from mobile phones and it can also be used to access video conferencing and multimedia websites.
What is GPRS?

GPRS Network Architecture:

GPRS is usually an attempt to use existing GSM network elements as much as possible.  There are new entities called GPRS that support nodes (GSNs) that are responsible for the distribution and routing of data packets between mobile stations and external packet networks.  
There are two types of GSNs,
  • Service of GPRS Support Node (SGNS)
  • Gateway GPRS Support Node (GGNS) 
These are two modare in comparison to MD-IS in CPDP.  There is also a new database called GPRS Register which is located with HLR.  It stores routing informations and maps the IMSI to the PDN address.  Thus, the GPRS reference architecture is shown as-
GPRS architecture

GPRS Architecture Subsystem:

 Mobile Station:

GPRS services require new mobile stations because existing GSM phones are not capable of handling enhanced air interfaces or packet data.  A wide variety of mobile stations exist which include a high speed version of the current phone to support high speed data access such as PC cards for laptop computers.  These mobile stations are in backward compatibility mode for making voice calls which GSM is used.

Base Station Subsystem:

Each BSC requires the installation of packet control units in addition to a software upgrade.  They provide a physical and logical data interface to the BSS to estimate packet data traffic.  BTS also requires software upgrades, but typically does not have hardware enhancements.

When traffic originates on the subscriber mobile, it is transported over the air interface from BTS and then BTS to BSC, in the same way as in standard GSM calls.  But traffic is separated into the output of the BSC, voice is sent to the mobile switching center per standard GSM, and data is sent through the PCU to a new device called SGSN.

GRPS Support Nodes:

SSGN: GPRS Supporting Node GPRS is responsible for collecting information for authentication of mobiles, registration of mobiles in the network, mobility management and charging for use of air interfaces.

GGSN: The gateway GPRS support node acts as an interface and a router for external networks. The GGSN contains routing information for GPRS mobiles, which is done for the correct servicing GPRS support node using tunnel packets via an IP based internal backbone.

Internal Back Network:

An internal backbone is an IP-based network used to carry new packets between different GSNs.  The tunneling process is used between SGSN and GGSN for secure exchange to inform the internal backbone with domain back up outside the GPRS network.

Mobility Support:

In a similar way to GSM and CDPD, GPRS has mechanisms to support mobility.  There are two types of mobility support in GPRS networks-

  • Attachment process
  • Location and Handoff Management

Short Message Service in GSM:

Enable the introduction of SMS for the spread of GSM, similar to peer-to-peer instant messaging over the Internet.  Users of SMS can exchange alphanumeric messages up to 160 char.  Within seconds of presenting the message.

Gprs module:

GPRS module.

GPRS Application:

  • Common packet radio service, commonly known as GPRS, is a new non-voice, value-added, high-speed, packet-switching technology for GSM (Global System for Mobile Communications) networks. This enables short bursts, sending and receiving of data such as email and web browsing, as well as large volumes of data on mobile telephone networks. GPRS provides fast data transmission through the GSM network within a range of 9.6Kbit to 115Kbits.

  • This new technology makes it possible for users to make telephone calls and transmit data at the same time. (For example, if you have a mobile phone using GPRS, you will be able to make simultaneous calls and receive e-mail massages.)

  • With GPRS, you are able to access e-mail and internet through your pocket PC or portable PC.

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Satish jagtap

Hello iam Satish jagtap Electrical engineer. From: Aurangabad, Maharashtra. Edu: MIT college of Engineering.

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