Information about GPRS (General Packet Radio Service).

Information about GPRS

Introduction

• GPRS protocol is a packet-switch protocol; define for web applications in GSM network.
• In other words Internet on GSM network is standardized as GPRS network.
• GPRS has digital structure and this structure based on Time Division Multiple Access (TDMA) technique.
• One TDMA frame has 8 time slots (TSs).
• These TSs can be allocated to users, and single TS can be shared by several active users for uplink and downlink purposes.
• General Packet Radio Services (GPRS) is a packet-based wireless communication service that promises data rates from 56 up to 114 Kbps and continuous connection to the Internet for mobile phone and computer users.

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How Does GPRS Work?

• In GSM cell phone systems, there will always be idle radio capacity.
• This is the capacity of a network provider that is not being used and it stays unused until other cell phone users decide to make phone calls.
• GPRS uses this idle radio capacity to establish a data network to be used for data transmission.
• If a network provider's idle radio capacity decreases, which means a lot of phone calls are being serviced, data transmission and speed decreases as well.
• Cell phone calls have a higher priority than Internet data transmission in cell phone network providers

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