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GPRS Mobile Multislot classes

This page covers GPRS mobile multislot classes and mention no. of maximum slots supported in uplink and downlink. It covers GPRS class 12,class 32 and class 33.

Multislot class Maximum number of slots Type of GPRS Mobile
Rx Tx Sum
1 1 1 2 1
2 2 1 3 1
3 2 2 3 1
4 3 1 4 1
5 2 2 4 1
6 3 2 4 1
7 3 3 4 1
8 4 1 5 1
9 3 2 5 1
10 4 2 5 1
11 4 3 5 1
Class 12 4 4 5 1
13 3 3 NA 2
14 4 4 NA 2
15 5 5 NA 2
16 6 6 NA 2
17 7 7 NA 2
18 8 8 NA 2
19 6 2 NA 1
20 6 3 NA 1
21 6 4 NA 1
22 6 4 NA 1
23 6 6 NA 1
24 8 2 NA 1
25 8 3 NA 1
26 8 4 NA 1
27 8 4 NA 1
28 8 6 NA 1
29 8 8 NA 1
30 5 1 6 1
31 5 2 6 1
Class 32 5 3 6 1
Class 33 5 4 6 1
34 5 5 6 1
35 5 1 6 1
36 5 2 6 1
37 5 3 6 1
38 5 4 6 1
39 5 5 6 1
40 6 1 7 1
41 6 2 7 1
42 6 3 7 1
43 6 4 7 1
44 6 5 7 1
45 6 6 7 1

The multislot classes are characterized by following useful parameters.
Tx: It indicates maximum number of timeslots allowed in the uplink(i.e.transmit direction).

Rx: It indicates maximum number of timeslots allowed in the downlink(i.e.receive direction).

Sum: It indicates maximum number of combined timeslots allowed in Tx+Rx.

Type of GPRS mobile: There are two types of mobiles available in GPRS.
Type 1 mobile can not transmit and receive at the same time. This type of mobile supports both GMSK and 8-PSK modulation scheme in downlink. It supports only GMSK in the uplink.

Type 2 mobile can transmit and receive at the same time. It supports 8PSK in both downlink and uplink direction.

RELATED LINKS

GSM Tutorial
GPRS tutorial
BER vs BLER vs DBLER
Test Mode A vs Test Mode B
GPRS RxQUAL vs BER
GPRS protocol stack
GPRS Modem vendors
GSM versus GPRS
EDGE/EGPRS Basics
What is GPRS
GPRS measurements

RF and Wireless Terminologies


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