RNTI not found in eNB with cellId

[Pham Quoc Viet]

Hello everyone,

I am doing the simulation about manual handover, but I have a unsolved question :(.

In the script, automatic handover is not allowable, and UE do handover if and only if one specific condition is satisfied.
In details: at time t1, UE do handover from cellId1 to cellId2 and from cellId2 to cellId3 at time t2. Unfortunately, the first handover is ok, the second handover is not done with an error message as follows:
"assert failed. cond="it != m_ueMap.end ()", msg="RNTI 2 not found in eNB with cellId 2", file=../src/lte/model/lte-enb-rrc.cc, line=1563
terminate called without an active exception"

Now, I do not know exactly why this message is displayed because the handover from cellID2 to cellId3 has been already done (see the following messages)
"
/NodeList/10/DeviceList/0/LteEnbRrc/HandoverStart eNB CellId 2: start handover of UE with IMSI 1 RNTI 2 to CellId 3
/NodeList/2/DeviceList/0/LteUeRrc/HandoverStart UE IMSI 1: previously connected to CellId 2 with RNTI 2, doing handover to CellId 3
/NodeList/2/DeviceList/0/LteUeRrc/HandoverEndOk UE IMSI 1: successful handover to CellId 3 with RNTI 2
/NodeList/11/DeviceList/0/LteEnbRrc/HandoverEndOk eNB CellId 3: completed handover of UE with IMSI 1 RNTI 2
"

Please help me to solve this problem. Any advice or comment is appreciated.

[Budiarto Herman]

Hi,

Your simulation script sounds similar to the simulation in src/lte/test/test-lte-x2-handover.cc. You could try to check this file and compare it with your script.

I also think that there's not enough information to tell the cause of your problem. How about posting your script for others to see?

-budi-

[Pham Quoc Viet]

Dear Budiarto Herman,

Thanks so much for your time.

It is very simple, but may be, it is quite hard for me to utilize the source of the problem.

Please find simulation code in the appended file.

[Pham Quoc Viet]

Dear Budiarto Herman,

I am still stuck in this error, it remains unsolved.

Despite a new simulation code, there are two serious erros that:
1. Once the handover condition is satisfied, it not do instantly and be delayed a long time. After that, the handover will be done; nevertheless, it do two times, not one time.
2. Error message msg="RNTI 2 not found in eNB with cellId2". I think this message is due to UE do handover two times and the handover is not done well.

I attached my simulation code below, please find them and help me to solve errors.

Thanks for your time and your response.

On Tuesday, March 18, 2014 6:32:57 AM UTC+9, Budiarto Herman wrote:

[Pham Quoc Viet]

Hi all,

Are there any comment on my problem.

I also would like to express my purpose. In the simulation scenario, at time t1 UE handover manually from cellID1 to cellId2. Similarly, this UE manually handover to cellId3 from cellId2 at time t2.

Thank you all.

[Tanu Goyal]

Hi Pham,

I am also getting the same error.. can u plz suggest me something??