IRATHO Fail du to Physical Channel Failure

[dah.]

hi,

can you help me ( Idea or Documents ...) to solve the problem of high IRATHO fail ( 3G to 2G) caused by physical Channel Failure.
which parametr, Timer ... must be optimised

[Muhammad Imran Rafique]

Can you please dig out up to worst cells, we doubt you have some Co-BCCH/BSIC issues mainly.

BR/
Imran

[mobilink999]

Hi, Can you kindly furnish some more detail of problem you are facing. You can tune InterRatPhyChFailNum and penalty timer. Feel free to carry this discussion further and share your findings.

[Matulpagla]

Hi,
HO fail due to Physical channel failure could happen due to different reason. Most improtantly you are requested to do the following-

1. Check the thresholds value/trigger timers for 3G to 2G HO based on the eqipment vendor.
2. Neighbor 2G BCCH/BSIC, LAC & quality.


Thanks

[javierinfante]

hi:
I also has the same problem, but I have checked everything and I cant find a reason.
Question: does anyone knows how to find which is the 2G cell where the handover fail??. I have checked the performance of all the 2G neighbors of the 3G cell and the counters for fail incomming handover from 3G are 0, the 3G cell has a ISHO to 2G failure rate around 25% but the 2G neighbors counters are perfect.

[rfnubs]

check the source 3G cell if its no resource available to HO 2G sites

[ironheart]

Hi,

IRATHO fail here is RT or NRT? and fail from 2G -> 3G or 3G -> 2G?


hi:
I also has the same problem, but I have checked everything and I cant find a reason.
Question: does anyone knows how to find which is the 2G cell where the handover fail??. I have checked the performance of all the 2G neighbors of the 3G cell and the counters for fail incomming handover from 3G are 0, the 3G cell has a ISHO to 2G failure rate around 25% but the 2G neighbors counters are perfect.

[vivero]

Hi guys!

Here's a document that instruct how to optimize IRAT HO.
Because of the volume limitation, so I must divide it to 2 parts.
I hope it can help you. Please remember thanks and reps!
3309433095

Regards!

[faithhund]

@ Vivero!
Can you send me the doc?
My email is faithhund@yahoo.com.
@ Javier!
You can check IRAT HO cell2cell. Which vendor do you work with? If the target 2G neighbors don't have incoming fail HO, maybe your source cell HO to a fake neighbor, because you declare wrong some fake neighbors.
Thanks!

[rfsupp]

Javier,

To check the HO failures from 3G to 2G, you have to ways: By tracing (very easy at Huawei - webLMT) or counters (usually the counters cell2cell at Huawei is a little bit to query)

And if you are checked the neighbor relation issues(BCCH,LAC,BSIC and etc) try to talk to Core Team, because there exist some problem there as I already faced.
With a lot of rehoming some times they forgot to declare that a LAC e etc.

[silverstayne]

Hi guys!

Here's a document that instruct how to optimize IRAT HO.
Because of the volume limitation, so I must divide it to 2 parts.
I hope it can help you. Please remember thanks and reps!
3309433095

Regards!

@ Vivero,

Hoping you could send this to me danlloydcruz@gmail.com

Thanks!

[finetopicbooks]

IOS7 has helped improve IRAT Handover Failure due to Physical Channel Failure(I Don't the exact fix which has been applied).

Also, check the ciphering algorithm which is being configured on 2G side(Cell Level).