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paulus
2014-09-18, 10:29 PM
Hi Expert,

I just tried activate State transition from DCH to FACH, in order to save network resource.

But then FACH congestion seems happen..


36404

3640536406

TImer F2D is slower (delayed) but D2F is faster to keep network resource.

I have tried to activate BE_4A_THD_ADJ_FOR_FACH_CONG_SWITCH in whole cells under related RNC in order to reduce FACH congestion.

What I want to ask are : 1. I just activated F2D, but there is increasing attempt D2C (DCH to CCH) and viceversa. Is it due to activation

of DRASWITCH_DRA_PS_NON_BE_STATE_TRANS_SWITCH?

2. Although FACH congestion increased, but seems no customer complain triggered (not increased) and no issue in user experience
Any idea the impact of FACH congestion?
3. What other counters to see the impacts of state transistion activation?

Attached is execution list. Hope smb can explain it to me, that would be great.

Thanks

BR//Paul

samuraial
2014-09-19, 04:08 PM
Hi m8,

To reduce fach add another SCCPCH channel(you divide FACH and PCH).
Fach congestion can affect PCH also as they share the same channel so do the action above.
Try to activate "FACH Allowed Max 60 Users Switch::ON" in ucacalgoswitch.

B/R

paulus
2014-09-19, 08:06 PM
Hi m8,

To reduce fach add another SCCPCH channel(you divide FACH and PCH).
Fach congestion can affect PCH also as they share the same channel so do the action above.
Try to activate "FACH Allowed Max 60 Users Switch::ON" in ucacalgoswitch.

B/R

Hi samuraial,

Already activate "FACH Allowed Max 60 Users Switch::ON"..

By the way, with high FACH congestion like that, what's the impact to customer coz seems no complain increased after this activation?

Do you know how to add SCCPCH? I'm still figuring out, but not yet found.

Thanks
BR//Paul

P.T.E.
2014-09-20, 04:17 AM
Hi samuraial,

Already activate "FACH Allowed Max 60 Users Switch::ON"..

By the way, with high FACH congestion like that, what's the impact to customer coz seems no complain increased after this activation?

Do you know how to add SCCPCH? I'm still figuring out, but not yet found.

Thanks
BR//Paul






Dear,

to add another SCCPCH you have to go through many steps, I suggest to check Huawei support or ask internally for the script.

BR,

P.T.E.
2014-09-21, 06:40 PM
Hi m8,

To reduce fach add another SCCPCH channel(you divide FACH and PCH).
Fach congestion can affect PCH also as they share the same channel so do the action above.
Try to activate "FACH Allowed Max 60 Users Switch::ON" in ucacalgoswitch.

B/R



Dear samuraial,

did you try ever to open FACH_USER_NUM_NOT_CTRL, if yes did it relieve FACH congestion ? did you face any drawbacks ?

BR,

samuraial
2014-09-23, 05:47 PM
Dear Paul,

The script to add another SCCPCH is the one below:

//Remove an SCCPCH.
DEA CELL: CellId=26861;
DEA SCCPCH: CellId=26861, PhyChId=8;
RMV PCHDYNTFS: CellId=26861, TrChId=3, RLCSize=240;
RMV PCH: CellId=26861, TrChId=3;
RMV PICH: CellId=26861, PICHId=10;
RMV FACHLOCH: CellId=26861, TrChId=4;
RMV FACHDYNTFS: CellId=26861, TrChId=4, RLCSize=168;
RMV FACHDYNTFS: CellId=26861, TrChId=5, RLCSize=360;
RMV FACH: CellId=26861, TrChId=4;
RMV FACH: CellId=26861, TrChId=5;
RMV SCCPCH: CellId=26861, PhyChId=8;
//Add an SCCPCH for the PCH.
ADD SCCPCHBASIC:CellId=26861, PHYCHID=8, SCCPCHOFFSET=50, SCRAMBCODE=0, STTDIND=FALSE, CTFCSIZE=BIT4, SLOTFORMAT=D8, TFCIPRESENCE=EXISTS, MBMSCHIND=COMMON;
ADD SCCPCHTFC:CellId=26861, PHYCHID=8, CTFC=0;
ADD SCCPCHTFC:CellId=26861, PHYCHID=8, CTFC=1;

ADD PICH:CellId=26861, PHYCHID=8, PICHID=10, PICHMODE=V36, STTDIND=FALSE;
ADD PCH:CellId=26861, PHYCHID=8, TRCHID=3, RATEMATCHINGATTR=230, TOAWS=35, TOAWE=10, PCHPOWER=-20;
ADD PCHDYNTFS:CellId=26861, TRCHID=3, RLCSIZE=240, TFSNUMBER=D2, TBNUMBER1=0, TBNUMBER2=1;
ACT SCCPCH:CellId=26861, PHYCHID=8;
//Add an SCCPCH for the FACH.
ADD SCCPCHBASIC:CellId=26861, PHYCHID=9, SCCPCHOFFSET=100, SCRAMBCODE=0, STTDIND=FALSE, CTFCSIZE=BIT4, SLOTFORMAT=D8, TFCIPRESENCE=EXISTS, MBMSCHIND=COMMON;
ADD SCCPCHTFC:CellId=26861, PHYCHID=9, CTFC=0;
ADD SCCPCHTFC:CellId=26861, PHYCHID=9, CTFC=1;
ADD SCCPCHTFC:CellId=26861, PHYCHID=9, CTFC=2;
ADD SCCPCHTFC:CellId=26861, PHYCHID=9, CTFC=3;

ADD FACH:CellId=26861, PHYCHID=9, TRCHID=4, MBMSMTCHIND=COMMON, RATEMATCHINGATTR=220, TOAWS=35, TOAWE=10, MAXFACHPOWER=15, MAXCMCHPI=D15, MINCMCHPI=D14, SIGRBIND=TRUE, CHCODINGTYPE=CONVOLUTIONAL;
ADD FACH:CellId=26861, PHYCHID=9, TRCHID=5, MBMSMTCHIND=COMMON, RATEMATCHINGATTR=130, TOAWS=35, TOAWE=10, MAXFACHPOWER=15, MAXCMCHPI=D13, MINCMCHPI=D0, SIGRBIND=FALSE, CHCODINGTYPE=TURBO;
ADD FACHDYNTFS:CellId=26861, TRCHID=4, RLCSIZE=168, TFSNUMBER=D3, TBNUMBER1=0, TBNUMBER2=1, TBNUMBER3=2;
ADD FACHDYNTFS:CellId=26861, TRCHID=5, RLCSIZE=360, TFSNUMBER=D2, TBNUMBER1=0, TBNUMBER2=1;
ADD FACHLOCH:CellId=26861, TRCHID=4;
ACT SCCPCH:CellId=26861, PHYCHID=9;
ACT CELL: CellId=26861;

Please verify it with Huawei if you want. :)
You can try to increase a little the counter for users to pass on FACH also.

@P.T.E

No i didn't try FACH_USER_NUM_NOT_CTRL m8.

B/R

P.T.E.
2014-09-24, 02:16 AM
Dear,

My recommendation to add also

ADD SCCPCHTFC:CellId=26861, PHYCHID=9, CTFC=4;
ADD SCCPCHTFC:CellId=26861, PHYCHID=9, CTFC=5;
ADD SCCPCHTFC:CellId=26861, PHYCHID=9, CTFC=6;

and change

ADD FACHDYNTFS:CellId=26861, TRCHID=4, RLCSIZE=168, TFSNUMBER=D3, TBNUMBER1=0, TBNUMBER2=1, TBNUMBER3=2;
ADD FACHDYNTFS:CellId=26861, TRCHID=5, RLCSIZE=360, TFSNUMBER=D2, TBNUMBER1=0, TBNUMBER2=1;

To

ADD UFACHDYNTFS:CELLID=XXXXX, TRCHID=4, RLCSIZE=168, TFSNUMBER=D3, TBNUMBER1=0, TBNUMBER2=1, TBNUMBER3=2;
ADD UFACHDYNTFS:CELLID=XXXXX, TRCHID=5, RLCSIZE=360, TFSNUMBER=D3, TBNUMBER1=0, TBNUMBER2=1, TBNUMBER3=2;


BR,


Dear Paul,

The script to add another SCCPCH is the one below:

//Remove an SCCPCH.
DEA CELL: CellId=26861;
DEA SCCPCH: CellId=26861, PhyChId=8;
RMV PCHDYNTFS: CellId=26861, TrChId=3, RLCSize=240;
RMV PCH: CellId=26861, TrChId=3;
RMV PICH: CellId=26861, PICHId=10;
RMV FACHLOCH: CellId=26861, TrChId=4;
RMV FACHDYNTFS: CellId=26861, TrChId=4, RLCSize=168;
RMV FACHDYNTFS: CellId=26861, TrChId=5, RLCSize=360;
RMV FACH: CellId=26861, TrChId=4;
RMV FACH: CellId=26861, TrChId=5;
RMV SCCPCH: CellId=26861, PhyChId=8;
//Add an SCCPCH for the PCH.
ADD SCCPCHBASIC:CellId=26861, PHYCHID=8, SCCPCHOFFSET=50, SCRAMBCODE=0, STTDIND=FALSE, CTFCSIZE=BIT4, SLOTFORMAT=D8, TFCIPRESENCE=EXISTS, MBMSCHIND=COMMON;
ADD SCCPCHTFC:CellId=26861, PHYCHID=8, CTFC=0;
ADD SCCPCHTFC:CellId=26861, PHYCHID=8, CTFC=1;

ADD PICH:CellId=26861, PHYCHID=8, PICHID=10, PICHMODE=V36, STTDIND=FALSE;
ADD PCH:CellId=26861, PHYCHID=8, TRCHID=3, RATEMATCHINGATTR=230, TOAWS=35, TOAWE=10, PCHPOWER=-20;
ADD PCHDYNTFS:CellId=26861, TRCHID=3, RLCSIZE=240, TFSNUMBER=D2, TBNUMBER1=0, TBNUMBER2=1;
ACT SCCPCH:CellId=26861, PHYCHID=8;
//Add an SCCPCH for the FACH.
ADD SCCPCHBASIC:CellId=26861, PHYCHID=9, SCCPCHOFFSET=100, SCRAMBCODE=0, STTDIND=FALSE, CTFCSIZE=BIT4, SLOTFORMAT=D8, TFCIPRESENCE=EXISTS, MBMSCHIND=COMMON;
ADD SCCPCHTFC:CellId=26861, PHYCHID=9, CTFC=0;
ADD SCCPCHTFC:CellId=26861, PHYCHID=9, CTFC=1;
ADD SCCPCHTFC:CellId=26861, PHYCHID=9, CTFC=2;
ADD SCCPCHTFC:CellId=26861, PHYCHID=9, CTFC=3;

ADD FACH:CellId=26861, PHYCHID=9, TRCHID=4, MBMSMTCHIND=COMMON, RATEMATCHINGATTR=220, TOAWS=35, TOAWE=10, MAXFACHPOWER=15, MAXCMCHPI=D15, MINCMCHPI=D14, SIGRBIND=TRUE, CHCODINGTYPE=CONVOLUTIONAL;
ADD FACH:CellId=26861, PHYCHID=9, TRCHID=5, MBMSMTCHIND=COMMON, RATEMATCHINGATTR=130, TOAWS=35, TOAWE=10, MAXFACHPOWER=15, MAXCMCHPI=D13, MINCMCHPI=D0, SIGRBIND=FALSE, CHCODINGTYPE=TURBO;
ADD FACHDYNTFS:CellId=26861, TRCHID=4, RLCSIZE=168, TFSNUMBER=D3, TBNUMBER1=0, TBNUMBER2=1, TBNUMBER3=2;
ADD FACHDYNTFS:CellId=26861, TRCHID=5, RLCSIZE=360, TFSNUMBER=D2, TBNUMBER1=0, TBNUMBER2=1;
ADD FACHLOCH:CellId=26861, TRCHID=4;
ACT SCCPCH:CellId=26861, PHYCHID=9;
ACT CELL: CellId=26861;

Please verify it with Huawei if you want. :)
You can try to increase a little the counter for users to pass on FACH also.

@P.T.E

No i didn't try FACH_USER_NUM_NOT_CTRL m8.

B/R

paulus
2014-09-24, 10:18 AM
Hi Samuraial & PTE,


Really appreciate for your recommendation and script.

I just want to know, it seems that ADD SCCPCH is implemented on cell level, not RNC level, am I correct?

So I just need trial to set it in highest FACH congestion cell?

I hope it will not impact globally under 1 RNC (degradation) coz here I'm working alone, no directions from HUawei HQ regarding this implementation trial.

Please kindly confirm this point as I want to try it soon, as this fach congestion is starting trigger more complaints.

2nd point is, what is the counter performance to show management that activated FACH state will reduce DCH resource? Is it XPU load?

Thanks
BR//Paul






Dear,

My recommendation to add also

ADD SCCPCHTFC:CellId=26861, PHYCHID=9, CTFC=4;
ADD SCCPCHTFC:CellId=26861, PHYCHID=9, CTFC=5;
ADD SCCPCHTFC:CellId=26861, PHYCHID=9, CTFC=6;

and change

ADD FACHDYNTFS:CellId=26861, TRCHID=4, RLCSIZE=168, TFSNUMBER=D3, TBNUMBER1=0, TBNUMBER2=1, TBNUMBER3=2;
ADD FACHDYNTFS:CellId=26861, TRCHID=5, RLCSIZE=360, TFSNUMBER=D2, TBNUMBER1=0, TBNUMBER2=1;

To

ADD UFACHDYNTFS:CELLID=XXXXX, TRCHID=4, RLCSIZE=168, TFSNUMBER=D3, TBNUMBER1=0, TBNUMBER2=1, TBNUMBER3=2;
ADD UFACHDYNTFS:CELLID=XXXXX, TRCHID=5, RLCSIZE=360, TFSNUMBER=D3, TBNUMBER1=0, TBNUMBER2=1, TBNUMBER3=2;


BR,

paulus
2014-09-26, 08:53 PM
Hi P.T.E & Samuraial,

FACH congestion decreased after execute

SET UUESTATETRANS: D2FTvmTimeToTrig=D5000, BeH2FTvmTimeToTrig=D5000, BeF2DHTvmThdForFACHCong=D128;

3643936440


But I really want to try adding SCCPCH. Is it only on cell level?

Thanks
BR//Paul

samuraial
2014-09-26, 09:22 PM
As you see in the commands all of them are cell level.

you can try on one cell if you want.

B/R

P.T.E.
2014-09-27, 03:57 AM
@Paul go for it and let us know the results. but you should be aware after you test the adding of 2nd SCCPCH and you want to deploy it on a large scale, you should at least deploy it on RNC level or LAC level (it is recommended to be on the whole network) since it will cause reselection issues for some UEs when the reselection is done between cells that have different number of SCCPCHs (from cell with 1SCCPCH to cell 2SCCPCH and vice versa) especially for ip4.

BR,

sabila
2014-09-29, 09:53 AM
Yes paul
1. 60 Fach user
2. 2nd sccpch
3. Upgrade BW Fach from 4500 to 9000 but will impact to Fach
4. parameter FACh CONG BeF2DHTvmThdForFACHCong=D128-->but you must aware to SPU DPU load also,i have tried this last week adn SPU load increase 10 %

paulus
2014-09-30, 11:14 AM
Hi P.T.E, Samuraial & Sabila,

Please kindly help.

I've followed the script to add sccpch in 1 cell, but when I try to activate USCCPCH, it's failed due to

The calculated transport format combination must be smaller than the product of the number of configured TFS of the FACH/PCH.

Below is the UFACH :
%%LST UFACH: CellId=38571;%%
RETCODE = 0 Execution succeeded.


List FACH
---------
Cell ID Cell Name FACH ID SCCPCH ID Transmission Time Interval Rate Matching Attribute Time of Arrival Window Startpoint Time of Arrival Window Endpoint Max Transmit Power of FACH Max Common Channel Priority Min Common Channel Priority Bearing Signal Indication Channel Code Type Coding Rate


38571 MD3G38571 4 9 T10 220 35 10 15 D15 D14 TRUE CONVOLUTIONAL D1/2
38571 MD3G38571 5 9 T10 130 35 10 15 D13 D0 FALSE TURBO <NULL>
(Number of results = 2)


List FACH
---------
Cell ID Cell Name FACH ID SDU Discard Time Max PDU Size


38571 MD3G38571 4 T10 20
(Number of results = 1)


List FACH
---------
Cell ID Cell Name FACH ID RLC Size Number of TFs TB Number of TF1 TB Number of TF2 TB Number of TF3


38571 MD3G38571 4 168 D3 0 1 2
38571 MD3G38571 5 360 D3 0 1 2
(Number of results = 2)




--- END


and sccpch :

%%LST USCCPCH: CellId=38571;%%
RETCODE = 0 Execution succeeded.


List SCCPCH
-----------
Cell ID Cell Name SCCPCH ID SCCPCH Offset Scrambling Code STTD Indicator Power Offset 1 Power Offset 3 CTFC Length of TFCS Pilot Symbol Exist Slot Format TFCI Existing Indicator Multiplex Position Mbms Channel Indicator Validation indication


38571 MD3G38571 8 50 0 FALSE 8 12 BIT4 NOT_EXISTS D8 EXISTS FLEXIBLE COMMON DEACTIVATED
38571 MD3G38571 9 100 0 FALSE 8 12 BIT4 NOT_EXISTS D8 EXISTS FLEXIBLE COMMON ACTIVATED
(Number of results = 2)


List SCCPCH
-----------
Cell ID Cell Name SCCPCH ID Calculated Transport Format Combination


38571 MD3G38571 8 0
38571 MD3G38571 8 1
38571 MD3G38571 8 2
38571 MD3G38571 8 3
38571 MD3G38571 8 4
38571 MD3G38571 8 6
38571 MD3G38571 9 0
38571 MD3G38571 9 1
38571 MD3G38571 9 2
38571 MD3G38571 9 3
(Number of results = 10)

What parameter should be changed in this case..? Really need help to soon activate this cell :(:(

Thanks
BR//Paul

P.T.E.
2014-10-04, 06:15 PM
Dear Paul,

Kindly try the script below

DEA UCELL: CELLID=XXXXX;
DEA USCCPCH: CELLID=XXXXX, PHYCHID=8;
DEA USCCPCH: CELLID=XXXXX, PHYCHID=9;
RMV UPCHDYNTFS: CELLID=XXXXX, TRCHID=3, RLCSIZE=240;
RMV UPCH: CELLID=XXXXX, TRCHID=3;
RMV UPICH: CELLID=XXXXX, PICHID=10;
RMV UFACHLOCH: CELLID=XXXXX, TRCHID=4;
RMV UFACHDYNTFS: CELLID=XXXXX, TRCHID=4, RLCSIZE=168;
RMV UFACHDYNTFS: CELLID=XXXXX, TRCHID=5, RLCSIZE=360;
RMV UFACH: CELLID=XXXXX, TRCHID=4;
RMV UFACH: CELLID=XXXXX, TRCHID=5;
RMV USCCPCH: CELLID=XXXXX, PHYCHID=8;
RMV USCCPCH: CELLID=XXXXX, PHYCHID=9;
ADD USCCPCHBASIC: CELLID=XXXXX, PHYCHID=8, SCRAMBCODE=0, SLOTFORMAT=D4;
ADD USCCPCHTFC: CELLID=XXXXX, PHYCHID=8, CTFC=0;
ADD USCCPCHTFC: CELLID=XXXXX, PHYCHID=8, CTFC=1;
ADD UPICH: CELLID=XXXXX, PHYCHID=8;
ADD UPCH: CELLID=XXXXX, PHYCHID=8;
ADD UPCHDYNTFS: CELLID=XXXXX, RLCSIZE=240, TFSNUMBER=D2;
ACT USCCPCH: CELLID=XXXXX, PHYCHID=8;
ADD USCCPCHBASIC: CELLID=XXXXX, PHYCHID=9, SCCPCHOFFSET=100, SCRAMBCODE=0, SLOTFORMAT=D10, TFCIPRESENCE=EXISTS;
ADD USCCPCHTFC: CELLID=XXXXX, PHYCHID=9, CTFC=0;
ADD USCCPCHTFC: CELLID=XXXXX, PHYCHID=9, CTFC=1;
ADD USCCPCHTFC: CELLID=XXXXX, PHYCHID=9, CTFC=2;
ADD USCCPCHTFC: CELLID=XXXXX, PHYCHID=9, CTFC=3;
ADD USCCPCHTFC: CELLID=XXXXX, PHYCHID=9, CTFC=4;
ADD USCCPCHTFC: CELLID=XXXXX, PHYCHID=9, CTFC=5;
ADD USCCPCHTFC: CELLID=XXXXX, PHYCHID=9, CTFC=6;
ADD UFACH: CELLID=XXXXX, PHYCHID=9, TRCHID=4, RATEMATCHINGATTR=220, TOAWS=35, TOAWE=10, CHCODINGTYPE=CONVOLUTIONAL;
ADD UFACH: CELLID=XXXXX, PHYCHID=9, TRCHID=5, RATEMATCHINGATTR=130, TOAWS=35, TOAWE=10, MAXCMCHPI=D13, MINCMCHPI=D0, SIGRBIND=FALSE, CHCODINGTYPE=TURBO;
ADD UFACHDYNTFS:CELLID=XXXXX, TRCHID=4, RLCSIZE=168, TFSNUMBER=D3, TBNUMBER1=0, TBNUMBER2=1, TBNUMBER3=2;
ADD UFACHDYNTFS:CELLID=XXXXX, TRCHID=5, RLCSIZE=360, TFSNUMBER=D3, TBNUMBER1=0, TBNUMBER2=1, TBNUMBER3=2;
ADD UFACHLOCH: CELLID=XXXXX, TRCHID=4;
ACT USCCPCH: CELLID=XXXXX, PHYCHID=9;
ACT UCELL: CELLID=XXXXX;

BR,

paulus
2014-10-17, 11:25 AM
Hi All,

Here is update report for UUEstateTrans.

Please add reputation if you find this helpful.

Thanks
BR//Paul