Huawei PS IRAT setting to cope fast fading

[kentck86]

Hi Experts,

Needed your comment on the UcellinterratHocov setting as follows:

Are the setting sets on left side able to tackle on fast fading users? From statistic it is seems there were too many PSUTRAN attempt and many failure pegged under IRATHO.FailOutPSUTRAN.PhyChFail.

Can anyone comment or share on the strategy for improving fast fading PSinterRAT case? thank you





Default Setting: RNC Setting




UCELLINTERRATHOCOV












CELLID

xxxx





INTERRATPERIODREPORTINTERVAL

D1000

INTERRATPERIODREPORTINTERVAL

D1000



HYSTFORINTERRAT


HYSTFORINTERRAT




TIMETOTRIGFORNONVERIFY


TIMETOTRIGFORNONVERIFY




TIMETOTRIGFORVERIFY


TIMETOTRIGFORVERIFY




INTERRATFILTERCOEF

D3

INTERRATFILTERCOEF

D3



INTERRATCSTHD2DECN0

-12

INTERRATCSTHD2DECN0

-12



INTERRATCSTHD2FECN0

-10

INTERRATCSTHD2FECN0

-10



INTERRATCSTHD2DRSCP

-90

INTERRATCSTHD2DRSCP

-100



INTERRATCSTHD2FRSCP

-90

INTERRATCSTHD2FRSCP

-97



INTERRATHTHD2DECN0

-20

INTERRATHTHD2DECN0

-20



INTERRATR99PSTHD2DECN0

-20

INTERRATR99PSTHD2DECN0

-20



INTERRATHTHD2FECN0

-18

INTERRATHTHD2FECN0

-18



INTERRATR99PSTHD2FECN0

-18

INTERRATR99PSTHD2FECN0

-18



INTERRATHTHD2DRSCP

-90

INTERRATHTHD2DRSCP

-105



INTERRATR99PSTHD2DRSCP

-90

INTERRATR99PSTHD2DRSCP

-105



INTERRATHTHD2FRSCP

-87

INTERRATHTHD2FRSCP

-102



INTERRATR99PSTHD2FRSCP

-87

INTERRATR99PSTHD2FRSCP

-102



INTERRATREPORTMODE

PERIODICAL_REPORTING

INTERRATREPORTMODE

PERIODICAL_REPORTING



FILTERCOEFOF2D2F

D3

FILTERCOEFOF2D2F

D3



WEIGHTFORUSEDFREQ


WEIGHTFORUSEDFREQ




HYSTFOR2D

4

HYSTFOR2D

4



HYSTFOR2F

4

HYSTFOR2F

4



TRIGTIME2D

D320

TRIGTIME2D

D320



TRIGTIME2F

D1280

TRIGTIME2F

D1280



BSICVERIFY

REQUIRED

BSICVERIFY

REQUIRED



TARGETRATCSTHD

16

TARGETRATCSTHD

16



TARGETRATR99PSTHD

16

TARGETRATR99PSTHD

30



TARGETRATHTHD

16

TARGETRATHTHD

30



INTERRATMEASTIME

60

INTERRATMEASTIME

60



INTERRATPINGPONGTIMER


INTERRATPINGPONGTIMER




INTERRATPINGPONGHYST


INTERRATPINGPONGHYST




INTERRATPHYCHFAILNUM

3

INTERRATPHYCHFAILNUM

3



PENALTYTIMEFORPHYCHFAIL

30

PENALTYTIMEFORPHYCHFAIL

30

[RF-JFJ]

Hi

I think you can try to modify the trigger time delay for 2D, make the value smaller to make the IRAT faster
( D0, D10, D20, D40, D60, D80, D100, D120, D160, D200, D240, D320, )

since the setting for IRAT 2G threshold is already in good value.i suggest to check also if the number of 2g site if enough and no congestion

to optimized "IRATHO.FailOutPSUTRAN.PhyChFail. " Please read the discription & recommendation below

After receiving the CCO message, the UE starts the T309 timer. The T309 timer is stopped if the UE sets up a connection in a new cell. Once the T309 timer times out, the original 3G cell is returned and the CCO failure message is sent.
− Check the configuration of the GSM neighboring cell parameters. If the parameters are not configured correctly, the access is initiated in an incorrect target cell.
− Check whether the status and KPIs of the target cell are normal.
− Check the resource utilization of the target cell, and determine whether the access failure is caused by the insufficiency of resources.
− Check whether there exists strong interference in the GSM radio environment.

[jayk]

Left side settings are very aggressive. These will not help in PSIRAT case. Suggest to revert to default or loose further because PS works fine at -105 level.

[kentck86]

Left side settings are very aggressive. These will not help in PSIRAT case. Suggest to revert to default or loose further because PS works fine at -105 level.

The left side setting were causing alot of IRATHO.FailOutPSUTRAN.PhyChFail. btw, any idea how to cope fast fading ? thank you

[jayk]

Fast Fading locations be identified by cell basis and parameter settings be done as per spots.