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Senior Member
Reputation: 379
NSN LTE RRC CSSR,ERAB SR,ERAB DCR
Hi All,
I am having the following highest failure counter for the respective KPI, does anyone knows does NSN RL40 having Timing advance counter available. Thus, i am able to found out whether the following failure are probably caused by cell overshooting? Or maybe there is any timer which is related to this?
LTE_5218c Total E-UTRAN RRC Connection Setup Success Ratio
Highest Failure cause counter: M8013C6-RRCCOMPL_Miss fails
LTE_5017a E-UTRAN E-RAB Setup Success Ratio
Highest Failure cause counter: M8006C2-Fails, RNL
LTE_5025d E-UTRAN E-RAB Drop Ratio, RAN View
Highest Failure cause counter: M8006C12-Fails,ENB rel, RNL
thank you
Default Password:finetopix
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2014-07-04 12:50 AM
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Member
Reputation: 86
Re: NSN LTE RRC CSSR,ERAB SR,ERAB DCR
Hi,
For M8013C6-RRCCOMPL_Miss fails increase t300.
For others check site basis, mostly sites with various alarms like GTPU path failure causes these issues.
Regards,
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Senior Member
Reputation: 379
Re: NSN LTE RRC CSSR,ERAB SR,ERAB DCR
Originally Posted by
4GExpert
Hi,For M8013C6-RRCCOMPL_Miss fails increase t300.For others check site basis, mostly sites with various alarms like GTPU path failure causes these issues.Regards,
Hi sir,Do we have timing advance parameter in NSN LTE, thus i can check if the cell is overshooting. As if the site is already overshooting, thus i believe by increasing T300 is not a better idea for this solution. Moreover, i checked the sites with others failure causes, there is no alarm.thank you
Default Password:finetopix
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Member
Reputation: 83
Re: NSN LTE RRC CSSR,ERAB SR,ERAB DCR
No TA counters until RL70 but you can use trace viewer to capture TA for limited number of cells at a time.
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VIP Member
Reputation: 897
Re: NSN LTE RRC CSSR,ERAB SR,ERAB DCR
For RRCCOMPL_MISS - Try changing the dlrsboost to 0, this may improve the Setup Session Success Rate.
For E-RAB Drop Ratio, try reducing the threshold 4. try to keep the Handover Measurement window to 3 db.
If 4G to 3G handover measurement window is too high then it is likely to drop.
Everyone is a genius at least once a year. The real geniuses simply have their bright ideas closer together.
Regards,
Venom
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Re: NSN LTE RRC CSSR,ERAB SR,ERAB DCR
Hi All, can anyone explain me why the overshooting degrades RRC CSSR - cause RRCCOMPL_MISS?
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