Main
Contact
Feedback
Download
Directory
Search
Shopping
VoIP
Mobile
GSM
GPRS
EDGE
3GSM
MMS
SMS
HSCSD
WAP
Bluetooth
M services
Mobile applications
Spectrum Allocation
Glossary
GSM News

 

 

 

 
GPRS Class Types

The class of the device determines the speed at which GPRS can be used.

For example, the majority of GPRS terminals will be able to download data at speeds of up to 24Kbps (kilobytes per second). At the higher end, speeds are theoretically possible up to 171.2 kbit/sec when 8 slots are assigned at the same time to a single user. In reality 40-50Kbps.

PC cards capable of GPRS will send data up to speeds of 48Kbps.

Compare this to current data speeds available:

Type 
Uplink (Sending)
Downlink (Receiving)
GPRS
14 kbps
28-64 kbps
GSM CSD
9.6-14 kbps
9.6-14 kbps
HSCSD
28 kbps
28 kbps
Dial-UP
56 kbps
56 kbps
ISDN Standard
64 kbps
64 kbps
ADSL
256 kbps
512 kbps
Broadband
2 Mbps
2 Mbps


GPRS Multislot Classes

Multislot classes are product dependant, and determine the maximum achievable data rates in both the uplink and downlink directions.

Written as (for example) 3+1 or 2+2, the first number indicates the amount of downlink timeslots (what the mobile phone is able to receive from the network).
The second number indicates the amount of uplink timeslots (how many timeslots the mobile phone is able to transmit).

The active slots determine the total number of slots the GPRS device can use simultaneously for both uplink and downlink communications.

Multislot Class Downlink Slots Uplink Slots Active Slots
1
1
1
2
2
2
1
3
3
2
2
3
4
3
1
4
5
2
2
4
6
3
2
4
7
3
3
4
8
4
1
5
9
3
2
5
10
4
2
5
11
4
3
5
12
4
4
5

Futher Examples:

Class 2 Class 4
One Up, Two Down - (2+1) One Up, Three Down - (3+1)
8-12Kbps Send - 16-24Kbps Receive 8-12Kbps Send - 24-36Kbps Receive
Mororola Accompli A008
Trium Mondo, Sirius
Motorola TimeportT260
Class 6 - Configurable between Class 8
Two Up, Three Down One Up, Four Down
16-24Kbps Send - 24-36Kbps Receive 8-12Kbps Send - 32-40Kbps Receive
Or Three Up, Two Down Ericsson T39, R520
Motorola v60i, v66i
Samsung Q200, S100
Siemens S45, ME45, M50
Trium Eclipse
24-36Kbps Send - 16-24Kbps Receive
Nokia 6310, 6510, 8310
Class 10- Configurable between Class 12- Configurable between
One Up, Four Down One Up, Four Down
8-12Kbps Send - 32-48Kbps Receive 8-12Kbps Send - 32-48Kbps Receive
Or Two Up, Three Down Or Two Up, Three Down
16-24Kbps Send - 24-36Kbps Receive 16-24Kbps Send - 24-36Kbps Receive
Philips Fisio 820 Or Three Up, Two Down
24-36Kbps Send - 16-24Kbps Receive
Or Four Up, One Down
32-48Kbps Send - 8-12Kbps Receive
Sierra Wireless Aircard 750
GSM/GPRS PC Card


Class A, Class B & Class C?

The class indicates the mobile phone capabilities.

Class A
Class A mobile phones can be connected to both GPRS and GSM services simultaneously.


Class B

Class B mobile phones can be attached to both GPRS and GSM services, using one service at a time. Class B enables making or receiving a voice call, or sending/receiving an SMS during a GPRS connection. During voice calls or SMS, GPRS services are suspended and then resumed automatically after the call or SMS session has ended.


Class C
Class C mobile phones are attached to either GPRS or GSM voice service. You need to switch manually between services.

 

More Info
GPRS Class types        

GPRS Operators 

Links
Mobile GPRS
Details of GSM Packet Radio Service (GPRS) on mobile networks.

GPRS Resource Center from Palowireless
A comprehensive web guide and further links to information on GPRS

Mobile Applications Initiative
Brought to you by Ericsson



 Nasaco.info | Nasaco.net | Tripoli-Lebanon.com | Tripoli.tv | 123Tripoli.com | Satdx.com | OD5SK.com | Nouha.com | Basma.info

Copyrightę1999-2003 LibanPhone.com , Samir Saadi KHAYAT. All rights reserved