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sekit
2010-11-20, 11:22 PM
What can be the reason for 'deactivate PDP context request' in WCDMA PS domain?CPICH Ec/No=-3, RSCP=-84, pls help!

chamen
2010-11-21, 12:49 AM
as I have noticed, this could be due to two reasons;
1. UE wants to go Idle mode (due to inactivity)
2. Disconnection of data connection
Cheers

sekit
2010-11-21, 01:18 AM
UE isn't inactive, i'm constantly downloading large documents from the net. I've no idea what the problem is.

sala70vic
2010-11-21, 01:28 AM
Dear chamen,

UE is not asking for DEA PDP Context in Inactivity mode, thanks.;)
regards,

sala70vic
2010-11-21, 01:33 AM
Dears,

If credit is not enough DEA PDP Context request could be occurred, thanks.
regards,

imran5911
2010-11-21, 06:13 PM
Hello

Deactivate PDP context can occur due to different reasons
1. the file you are trying to download has finished downloading
2.there are too many users on the cell and there is some kind of inactivity ( due to user inactivity)

sala70vic
2010-11-21, 06:20 PM
Hi Imran,

Inactivity mode is not a reason for DEA PDP CONTEXT REQ, only release the RRC and IU resources but PDP will not be activated, so that it is called always online user till the user disconnects the session.

To be sure, open user trace and check signaling.
thanks.
regards,

sekit
2010-11-22, 06:01 PM
Here is the report from UE before PDP context deactivation request !


MS3
General HSDPA Report

Time: 11:38:17.37

Length : 46
Protocol Version nr : 5.0
SeqNo : 634276
Type of Message : (3) Report(from Phone to PC)
Report Id : General HSDPA Report
Time Stamp : 6937012
Number of HSDPA Frames : 5
HSDPA Frames :
[0 ] :
CFN : 255
Timeslot of HS-PDSCH Decoding : 0
CQI : 23
Part 1 BFI : (1) HS-SCCH Decoded Incorrect
Part 2 BFI : (1) HS-SCCH Decoded Incorrect
PDSCH BFI : (1) PDSCH Block Decoded Incorrect
[1 ] :
CFN : 255
Timeslot of HS-PDSCH Decoding : 1
CQI : 23
Part 1 BFI : (1) HS-SCCH Decoded Incorrect
Part 2 BFI : (1) HS-SCCH Decoded Incorrect
PDSCH BFI : (1) PDSCH Block Decoded Incorrect
[2 ] :
CFN : 255
Timeslot of HS-PDSCH Decoding : 2
CQI : 23
Part 1 BFI : (1) HS-SCCH Decoded Incorrect
Part 2 BFI : (1) HS-SCCH Decoded Incorrect
PDSCH BFI : (1) PDSCH Block Decoded Incorrect
[3 ] :
CFN : 0
Timeslot of HS-PDSCH Decoding : 3
CQI : 23
Part 1 BFI : (1) HS-SCCH Decoded Incorrect
Part 2 BFI : (1) HS-SCCH Decoded Incorrect
PDSCH BFI : (1) PDSCH Block Decoded Incorrect
[4 ] :
CFN : 0
Timeslot of HS-PDSCH Decoding : 4
CQI : 23
Part 1 BFI : (1) HS-SCCH Decoded Incorrect
Part 2 BFI : (1) HS-SCCH Decoded Incorrect
PDSCH BFI : (1) PDSCH Block Decoded Incorrect
Stop Sync Pattern : 0x1234 (Correct pattern)