Require Name of NSN UMTS Radio Link Supervision Timers

[Osman Nayeem]

Dear NSN Experts

Would you please share name of NSN UMTS Uplink Radio Link Supervision Timers? For downlink, timers are T313 and N313. I need the name of corresponding uplink timers (for example, uplink timers in E// are noutsyncind, dchRcLostT & rlFailureT).


Secondly, there is a layer 3 timer in E/// - tRrcActiveSetUpdate (After sending an rrc active set update, if the RNC doesn’t receive an active set update complete by the UE within this timer, the call will be dropped). Can anyone please share the name of same timer in NSN?





Thanks!

[Khush]

Hi,

It is same noutsyncind and rlFailureT but it is system constant. you cannot change.
refer attached sheet

[marcengo]

First Question:
From: WCDMA RAN RRM Packet Scheduler (RU40)

The RNC starts the operator configurable timer T314 when it receives the Radio Link Failure message from the BTS(s). If the Cell Update message is received from the UE before T314 expires, the RRC connection is re-established.

During the RRC re-establishment procedure the AMR speech or CS data connection is moved back to the
Cell_DCH state with a Cell Update Confirm message.

If timer T314 expires, the RNC releases all RABs and the Iu connection to the core network.

From: WCDMA RAN Packet Data Transfer States (RU40)

When all the radio links in the active set are in the "out of sync" state, the RNC starts the corresponding time supervision and starts to wait for an NBAP: Radio Link Restore Indication (or RNSAP: Radio Link Restore Indication) procedure from the BTS(s) (or DRNS).

Once the time supervision ends, the RNC checks the timers T315 and T314, and, depending on their values and the used service (RT, NRT or both), an RRC connection re-establishment or an RRC: RRC Connection Release procedure.

Second Question:
All L3 timers are hardcoded/hidden in NOKIA. I have no access to them :(