Uplink Sync Drop

[9waves.9waves]

What could be the reason for Drop due to Uplink Sync in E******* ?Network?
We have number of drop due to Uplink Sync?

Whats Solution?

[sabila]

just copy from WCDMA optimization
Out of synch drops are found through the function Radio
connection supervision.
The aim of this function is to monitor the status of the radio
connection and to initiate the release of signaling connection in
case of radio connection is lost.
Three different supervision algorithms can trigger the condition of
“radio connection lost”:
• Supervision of radio link synchronization status
• Supervision of RLC protocol (Layer 2 failures)
• Supervision of connections on common channels

for further info may u check training e*******
LZT1238297 at page118

[fon909]

You may want to check following items to analyse drops due to UL Sync;


1. UL/DL imbalance
2. Ue issues
3. Poor coverage
4. Pilot pollution
5. Node B - RNC sync issues

[plannerguy]

Hi

Check timers T313 and counter N315


Regards
Plannerguy

[kryptonic]

You may want to check :

Alarms
Alarms on Neighboring Cell
CPICH Power
CPICH Delta (~3dB neighbors)
UL RSSI
Terrain profile
electricalUlDelay
Neighbor Count

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