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I think it is called side-long antenna installation

If you can tell how are the CS KPIs performing than it will help us investigate the issue.

What are the values of MAXPDCHRATE, UPDYNCHNTRANLEV, DWNDYNCHNTRANLEV, PDCHUPLEV & PDCHDWNLEV?

Inter-layer handover works only from higher layer to lower layer e.g., layer 3 to layer 2. To handover from lower layer to higher layer the MS has to perform EDGE handover.

The equation for inter-layer HO is

Filtered downlink RX level of the target cell ≥ Inter-layer HO Threshold + Adjacent Cell Inter-layer HO Hysteresis - 64

Where "Inter-layer HO Threshold" is...

AFP = Automatic Frequency Planning

There are two categories of AFP tools, one uses coverage prediction to generate interference matrix e.g., ILSA (part of aicom enterprise suite) and the other...

Adjacent is always better than Co-BCCH. However you should avoid assigning Co/Adj-BCCH to cells that are overlapping too much (serving the same area).
Do you have access to some AFP tool?

It is the combination of Co-BCCH/Co-BSIC (also Co-BCCH/Co-BCC) that creates the problem. If the BCCH are different than BSIC doesn't make any difference.

This is normal and MS will have no difficulty distinguishing between these two neighbours.

For a detailed discussion please visit this link

http://gsmfordummies.com/timing/timing.shtml

Different antenna models have different horizontal and vertical beam-width meaning you will need to change the antennas.

MS stores BSIC for each BCCH and it is not updated as frequently as BCCH is scanned so if a cell has two neighbors with same BCCH and different BSIC there is a possibility of wrong handover decision.

TA is calculated from RACH message. There is no way to stop a mobile from sending RACH message so the access is controlled by not sending Immediate Assignment command on AGCH if the TA calculated...

If "Intracell F-H HO Allowed" is set to YES and the RQI/2 is smaller than "H2F HO Threshold", and the proportion of half-rate TCHs in the cell is smaller than "Ratio of AMR-HR" (usually set to 100,...

Small correction, actually "Intracell F-H HO Allowed" must be set to YES.

Are you using flex-abis or legacy abis technique?

These interference band threshold are atleast tunable in huawei, not sure about other vendors.

If this problem happened on a new commisioned BSC, re-homed BSC, BSC on which Ater were added recently than most probable it is caused by CIC mismatch or cross patching on A-interface.

You can ask...

Vendor is Huawei

Which parameters are used to make sure that data traffic is carried on UMTS and voice traffic is carried on GSM.

Hi

I am glad you shared these docs again but when you are copying you should atleast have the decency to link to the original post.
...

Hi Jukreew

No offense but I know you want to make it to 200 posts as quickly as possible but it would be nice if you could post these manuals in a single thread. And we would much appreciate if...

Does anyone got the password for the attachment in this thread?

Thanks for pointing out but not all the manuals are available in that thread apart from the fact that they are scattered in many posts.

Attached are very good huawei internal GSM optimization manuals. Don't have the the parts from 17-49 or most probably the indexing is wrong.

Below are the contents of attached archive. I tried...

Hi Jan74

Were you using flex-abis in this case or normal abis without LAPD concentration?