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Reply To: System info type 5 and 5ter

#56356
Asif
Guest

Idle mode is also showing discrepency.

We know that SI type 2 contains BA list (ARFCN’s) from the same band as the serving cell,

i.e

if Serving cell is 900: SI type 2 contain 900 Frequencies

if Serving cell is 1800: SI type 2 contain 1800 Frequencies

SI type 2ter contains frequencies from the other band i.e

if Serving cell is 900: SI type 2ter contain 1800 Frequencies

if Serving cell is 1800: SI type 2ter contain 900 Frequencies

and SI Type 2bis is used if SI type 2 is incomplete.

Below are the SI messages received during Drive test. and clearly they show stuff that is against what the standard says(may be i hav lack of knowledge about the standard, in that case you people can correct me)

#############################
MS2
System Information Type 2

Time: 13:19:00.70
Frame number: 24659997

ARFCN : 624 (GSM 1800)
L2 Pseudo Length : 22
Skip indicator : 0
Protocol discriminator : (6) Radio resources management messages
Message type : 26
Neighbour Cell Description
EXT IND : (1) The information element carries only a part of the BA
BA IND : 1
1024 Range
Channels : 63 64 65 66 68 69 70 71 72 73 74 75 77 78 79
NCC permitted
NCC permitted values : 0 1 2 3 4 5 6 7
RACH control parameters
Max retransmission : (2) Maximum 4 retransmissions
Tx-integer : (7) 10 slots used
Cell bar access : (0) Not barred
Call reestablishment : (1) Not allowed
Access control
Emergency Call allowed : (0) All MSs
Barred classes :

Header dump (Hex):
E6 00 1B 00 00 00 04 1B 00 01
19 02 70 59

Message dump (Hex):
06 1A B0 47 FD 81 3F BF 80 C0
FF FF FF FC 08 10 20 40 FF 9D
00 00
##################################

************************
MS2
System Information Type 2bis

Time: 13:19:03.48
Frame number: 24660703

ARFCN : 624 (GSM 1800)
L2 Pseudo Length : 21
Skip indicator : 0
Protocol discriminator : (6) Radio resources management messages
Message type : 2
Neighbour Cell Description
EXT IND : (1) The information element carries only a part of the BA
BA IND : 1
1024 Range
Channels : 622 624
RACH control parameters
Max retransmission : (2) Maximum 4 retransmissions
Tx-integer : (7) 10 slots used
Cell bar access : (0) Not barred
Call reestablishment : (1) Not allowed
Access control
Emergency Call allowed : (0) All MSs
Barred classes :
rest
spare

Header dump (Hex):
E6 00 1B 00 00 00 04 1B 00 01
19 02 70 55

Message dump (Hex):
06 02 B2 70 FF 00 00 00 00 00
00 00 00 00 00 00 00 00 9D 00
00 2B
**********************************

SI Type 2ter is not received :S

Help me out!!!