Handover Delay

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2014-02-11, 05:56 PM
justdream

Handover Delay

Dears,

What could be the reason and of having noticable handover delay
while
Neighbor cell RxLev is much better than serving cell by
RxLev difference greater than PBGT HO threshold and for time duration greater than watch/ valid time

What could be the Technical cause?
2014-02-11, 07:15 PM
samuraial

Re: Handover Delay

RxQual maybe???

Regards.
2014-02-11, 08:16 PM
electron

Re: Handover Delay

Hi,

U need to check your layer and layerthr strategy. In GSM networks ad you may have 900Mhz and 1800Mhz in different layers due to balancing traffic between sub-bands generally they will be put in different layers to avoid overloading 900Mhz band! consider your 1800Mhz layer having higher priority in this case mostly during DT ur call will be dragged on 1800Mhz thus you will se this phenomena as delayed HO. selectively u need to decrease layerthr (Have no idea in Huaweii what is the exact parameter name)

BR

Quote:

Originally Posted by justdream

Dears,

What could be the reason and of having noticable handover delay
while
Neighbor cell RxLev is much better than serving cell by
RxLev difference greater than PBGT HO threshold and for time duration greater than watch/ valid time

What could be the Technical cause?
2014-02-11, 10:25 PM
justdream

Re: Handover Delay

Quote:

Originally Posted by electron

Hi,

U need to check your layer and layerthr strategy. In GSM networks ad you may have 900Mhz and 1800Mhz in different layers due to balancing traffic between sub-bands generally they will be put in different layers to avoid overloading 900Mhz band! consider your 1800Mhz layer having higher priority in this case mostly during DT ur call will be dragged on 1800Mhz thus you will se this phenomena as delayed HO. selectively u need to decrease layerthr (Have no idea in Huaweii what is the exact parameter name)

BR

All cells are in same Layer and majority of them are Concentric GSM
2014-02-14, 06:56 AM
gunpowder

Re: Handover Delay

check handover penalty / congetion
2014-02-14, 11:57 AM
electron

Re: Handover Delay

Hi,

Increase quality triggered handover, In E******* the name of parameter is QLIMDL , Find related parameter in Huaweii.

Cheers

Quote:

Originally Posted by justdream

All cells are in same Layer and majority of them are Concentric GSM
2014-02-18, 08:47 PM
johnny.shahin

Re: Handover Delay

It may be the hysteresis has a very large value.