How to Disable 2G to 3G HO for NSN

[makeev]

Dear All,

Can someone share how to disable 2G to 3G handovers in NSN. I have already retuned the QSearch parameters to discourage 2g to 3G HO but still IRAT handovers are happening. I need to disable them completely.

[alb_elezi]

Delete all ADJW in 2G Network or disable ISHO (ZWOS:2,739:;)

[ltecity]

If you delete all ADJW 2G to 3G than How can you reselect the 3G network in idle mode?

[alb_elezi]

The reselection process is related to QSRI parameter (7 always search, 15 never search). To be sure try with one Site/CELL to delete ADJW and set QSRI=7, so you will have reselection to 3G but no HO. If you try please reply the results.

[makeev]

Thanks for the feedback, but how about changing minEcnoThreshold to 0.5dbm.

The value 0.5 dB of this parameter means that the BSC is never allowed to initiate a handover attempt from the serving GSM cell towards the WCDMA RAN cell because a CPICH Ec/Io level measured by mobiles can be maximum 0 dB.

[alb_elezi]

Yes I agree, minEcnoThreshold is ADJW parameter, If you want to have ADJW you set the value to 0.5 to all ADJW.