This research paper summarizes the principles and use of GPRS (General Packet Radio Service) as a 2.5G mobile data system and transition technology towards 3G networks. It describes how GPRS allows packet data transmission within existing 2G GSM infrastructure at moderate bit rates. It also discusses GPRS limitations and security aspects. Finally, it introduces EDGE as an enhanced version of GPRS that achieves higher speeds and concludes that GPRS/EDGE serves as an important transition technique towards 3G networks like UMTS since existing GSM infrastructure can be reused.
GPRS Architecture and its components are covered extensively.
The slides give a little information about gprs and also gets into deeper explanation of its architecture.
General Packet Radio Service (GPRS) is a new bearer service for GSM that greatly improves and simplifies wireless access to packet data networks.General Packet Radio Service (GPRS) is a new bearer service for GSM that greatly improves and simplifies wireless access to packet data networks
GPRS applies packet radio principal to transfer user data packets in an efficient way b/w MS & external packet data network
GPRS applies packet radio principal to transfer user data packets in an efficient way b/w MS & external packet data network
GPRS Architecture and its components are covered extensively.
The slides give a little information about gprs and also gets into deeper explanation of its architecture.
General Packet Radio Service (GPRS) is a new bearer service for GSM that greatly improves and simplifies wireless access to packet data networks.General Packet Radio Service (GPRS) is a new bearer service for GSM that greatly improves and simplifies wireless access to packet data networks
GPRS applies packet radio principal to transfer user data packets in an efficient way b/w MS & external packet data network
GPRS applies packet radio principal to transfer user data packets in an efficient way b/w MS & external packet data network
Introduction of GPRS
QoS in GPRS
GPRS Network Architecture
GPRS Network Operation
Data Service,
Application,
Limitation In GPRS
Billing and Charging In GPRS
Introduction of GPRS
QoS in GPRS
GPRS Network Architecture
GPRS Network Operation
Data Service,
Application,
Limitation In GPRS
Billing and Charging In GPRS
General packet radio services (GPRS) is step to efficiently transport high-speed data over the current GSM and TDMA-based wireless network infrastructures.
Deployment of GPRS networks allows a variety of new applications ranging from mobile e-commerce to mobile corporate VPN access
Deployments of GPRS network has already taken place in several countries in Europe and the far east.
Mobile phone generations (Protocols, Terminology,interfaces)AliVahedifar
A great power point about : 2G/3G/4G/5g/OSI/SS7/GSM/UMTS/SCCP(protocols,stack,interface)
with emphasis on the protocols and interfaces and communication.
We tried to make a regular list of the information provided.
and we tried to make mobile networks easier to train.
EVOLUTION OF WIRELESS MOBILE COMMUNICATION NETWORKS AND FUTURE OF CELLULAR MA...cscpconf
In this paper, we discuss the evolution of the mobile communication systems from GSM to LTE (2G to 4G)
and the trends in the mobile communication industry. The Global System for Mobile Communication
(GSM) is a well established cellular system targeted here due to its engineering success and the large
number of users currently using the services. The flexibility of wireless networks over voice and data
transmission makes it one of the most popular modes of communication. Evolution to next generation
services depends on an addition of new services and new features to the existing networks or even an
integration of different communication technologies. With the invention of the devices such as tablets and
smart phones the need to improve the data transmission rates and transmission efficiency has increased to
higher than ever before. In this paper, we focus at some of the important issues pertaining to the evolution
of mobile communication networks and predict the future of the networks based on the analysis of the
cellular market in India. Since GSM networks accounts for more than 75% of the world wide cellular network, only the evolution of GSM network has been discussed in this paper.
A presentation made at A 2-day Annual Symposium, organized by Electrical/Electronic Engineering Department, FUTO, at School of Engineering and Engineering Technology (SEET) Complex Auditorium, FUTO, Imo State. (August 18, 2016)
3GPP Standardisation & Evolution for Digital Infrastucture.pdf
GPRS
1. Research Paper # 1
ON THE WAY TO 3G NETWORKS:
“THE GPRS/EDGE CONCEPT”
Vasil P. Pribylov , Member ,IEEE, Ivan I.Rezvan
Siberia State University of Telecommunications & Informatics
Email: v.pribylov@ieee.org
1
3. Introduction
Growing interest in mobile data applications lead a cause of GSM to
GPRS
GPRS a 2.5 G system allows the transmission of packet data at
moderate bit rates using random access channels within the 2G
infrastructure.
Mobile applications contain several characteristics that enhance the
value to the customers Like
mobility(constant voice & data services while on the move)
immediacy (obtaining connectivity when needed, regardless of
location and without a lengthy login session).
localization (allows subscribers to obtain information on
their current location) 3
4. Introduction cont….
GPRS Protocol Stack is important as a migration step
toward third-generation (3G) networks.
When GSM operators start to offer GPRS services, they
can use their existing networks and gradually assign
part of their resources from circuit-switched voice
services to packet-switched data services.
This allows a smooth transition from voice-only to
multimedia service networks.
4
5. GPRS BACKGROUND
Enable new & existing applications onto GSM
Enhancement of GSM’s functional & QoS parameter.
GPRS shall support both connectionless & connection oriented
services.
Offer flexible service at low cost to the user.
Use scarce network resources as efficiently as possible
5
6. GPRS BACKGROUND cont……
Required to efficiently use network resources for packet mode
applications.
New mechanisms are required in order to provide highly standardized,
feature rich services.
Three types of service request were distinguished:
1-Broadcast:A point to multipoint message sent to “all service
subscribers” within an area defined by the service requester.
2-Multicast:A point to multipoint message sent to “”an identical
subset of all service subscribers” within the area defined by the
service requester.
3-Singlecast:A point to point message sent to “a unique subscriber”.6
7. GPRS BACKGROUND cont……
The GPRS operator shall be responsible for
transferring data between the service access points
at the fixed side and at the mobile side. The flow of
data shall be possible in three scenarios.
1. Packets sent from a mobile access point to a
fixed network access point.
2. Packets sent from a fixed network access point
to a mobile access point.
3. Packets sent from a mobile access point to a
mobile access point via the GSM operator
infrastructure
7
8. Principles of GPRS
Users specifically need a mobile phone or terminal supporting GPRS ,
subscription to a network.
GPRS network resources accessed only when data actually need to be
transmitted between the GPRS user and the network.
Data are divided into packets and then transmitted via the radio & core
GPRS network.
Packet switched traffic is separated from circuit switched traffic at
BSC & diverted to GPRS core network.
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9. Principles of GPRS (Cont.)
GPRS use GMSK modulation scheme.
Information is coded in the increase(+ve shift) or (-ve shift) of the
carrier phase.
In GMSK ,initially signal passed through pre-modulation Gaussian
filter for pulse-shaping.
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11. Link Layer Performance of GPRS Network
Frequency reuse factor
Error coding scheme(CS)
Data packet delay
Strong channel coding: convolutional code recovers most of the
transmission errors. However , the effective throughput of data packets
is small due to the low code rate.
Weak channel coding: Each RLC block carries a high payload & the
whole RLC block has to be retransmitted.
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12. GPRS Limitations & Security Aspects
Theoretical maximum GPRS data transmission speed only when a user
utilize eight timeslots without any protection.
Bandwidth available to a GPRS user is severely limited.
Misuse of their resources by unauthorized persons using manipulated
mobile stations.
Eaves-dropping the information being exchanged on the radio path.
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13. GPRS Limitations & Security
MS authentication: Protection of GPRS subscribers by denying
intruders the ability to impersonate authorized users
Access Control: Network can support restrictions on access by or to
different subscriber e.g. location, screening lists etc.
User Identity Confidentiality: User identity is not disclosed to
unauthorized individuals, entities or processes.
User Information Confidentiality: the property that the user
information is not made available or disclosed to unauthorised
individuals, entities or processes. The purpose is to provide for
confidentiality of user data. 13
14. EXPERIMENT
experimented with the Eriksson R580m mobile phone
(using “4+1” time slots four slots in “downlink” for
receiving and one slot in “uplink” for requesting the
information
GPRS connection with one of Novosibirsk GPRS
operators – Siberia Cellular Systems network of Russia.
web-site www.nsk.mts.ru
14
16. INTRODUCING EDGE
EDGE is an enhanced version of GPRS
using a different modulation technique, eight-level
Phase Shift Keying (8PSK), that has a spectral
efficiency of 3bits/s/Hz in comparison of GMSK’s
1bit/s/Hz.
For this reason EDGE requires a hardware upgrade of
the RF part in the base stations.
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17. Conclusion and Future Work
GPRS allows network operators to implement an IP-based core
architecture for data applications, which continues to be used and
expanded upon in 3G services for integrated voice and data
applications
Speed is still not fulfilling the demand of customers.
Advancement in GPRS system will be the use of improved coding
techniques.
GPRS proves to be a testing & development area for new services &
application which will be used for 3G services.
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18. Conclusion and Future Work
,GPRS/EDGE acts as transition technique towards 3G
& a great need of UMTS/GSM dual-mode.
But UMTS operators can not start planning from zero
since the best solution is that the existing GSM base
station sites are to be the primary sites for UMTS base
stations.
18
19. REFERENCES
[1] GPRS Overview,
http://www.vocal.com/data_sheets/gprs1.html.
[2] GSM World: GPRS Platform,
http://www.gsmworld.com/technology/gprs/index.sht
ml.
[3] ETSI TR 101.186 V6.0.0 (1998-04): “General Packet
Radio Service (GPRS)”, 19 p.
[4] Cellular System Solutions for GSM/GPRS Wireless
Terminals, 21 March 2003,
http://www.3g.co.uk/PR/March2003/5070.htm.
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