Présentation
GPRS is a packet based wireless communication
service that offers data rates from 9.05 up to 171.2 Kbps and
continuous connection to the Internet for mobile phone and computer users. GPRS
is based on GSM communications and complements existing services such as
circuit switched cellular phone connections and the Short Message Service
(SMS).
GPRS represents the bridge between 2G and 3G mobile telecommunications and is commonly referred to as 2.5G.
GPRS represents the bridge between 2G and 3G mobile telecommunications and is commonly referred to as 2.5G.
Implementation of GPRS
requires modification of the existing GSM networks in that GSM is a circuit
switched technology while GPRS is packet oriented. GPRS enables packet data
(the same as is used by an Ethernet LAN, WAN or the Internet) to be sent to and
from a mobile station - e.g. mobile phone, PDA or Laptop.
WAP and SMS can also be sent
using GPRS and individuals working with GPRS need to learn and understand how
the mobile stations, the air interface, network architecture, protocol
structures and signalling procedures must be modified.
GPRS offers much higher data rates than GSM and can be combined with 3G technologies such as EDGE to give even higher bit-rates. It offers many benefits for customers and network operators: such as volume (rather then time) dependent billing and more efficient use of network resources.
GPRS offers much higher data rates than GSM and can be combined with 3G technologies such as EDGE to give even higher bit-rates. It offers many benefits for customers and network operators: such as volume (rather then time) dependent billing and more efficient use of network resources.
Due to the worldwide delay in
implementing 3G solutions such as CDMA and UMTS the demand for GPRS is still
growing.
GPRS
Networks:
·
Offers detailed information ranging from standards to practical
implementation
·
Answers 'how' and 'why' rather than just simply re-stating GPRS
specifications
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Provides comprehensive coverage in a single volume
Essential reading for all
telecommunications project managers, field engineers, technical staff in
network operator and manufacturing organisations, GPRS application and service
developers, Datacoms/IT engineers.
The comprehensive coverage
also makes this a superb reference for students of computer science,
telecommunications and electrical engineering
