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Reply To: System info type 5 and 5ter

#56354
Asif
Guest

Thank you all.

I am having a problem i hav a DCS only site (i.e it has BCCH on 1800 and no 900 TRX) Its not making outgoing handovers.

During the Drive test i have found that its SI 5 contains a strange thing which i am posting below.

MS1
System Information Type 5

Time: 13:22:52.18
Frame number: 61147634

L2 Header (Hex) : 0x00 0x00 0x03 0x03 0x49
Skip indicator : 0
Protocol discriminator : (6) Radio resources management messages
Message type : 29
Neighbour Cell Description
EXT IND : (0) The information element carries the complete BA
BA IND : 0
1024 Range
Channels : 63 64 65 66 68 69 70 71 72 73 74 75 77 78 79 622

Header dump (Hex):
EB 00 19 00 00 00 04 19 00 01
17 00 00 03 03 49

Message dump (Hex):
06 1D 80 47 FE 81 3F 7F 80 80
FF FF FF FC 08 15 00 7F

Now if you see the BA list in this message its containing Frequencies from 900 + 1800 also there is no SI 5ter message, which is against the standard as the standard say :-

SI 5 : one band
SI 5ter: other band

I have drive tested some other DCS only sites, they are not showing this discrepecy and are working fine.

Can any tell whats the problem? why is the message like this? is there any parameter that controls this?

Thanks.