http://fr.scribd.com/doc/137526574/Ericsson-Features Offset____________________________________________ Offset with cong to cell high HO att and no cong cell high cong
cellr no cong high Ho attempt HOSR>99 RANKn = SS_DLn - OFFSETn,s - HYSTn
offsetN
CLS_______________________________________________ LSSTATE BSC ACTIVE check per neighbour handover success rate and only then optimise CLS settings nbr belonging same BSC nbr same Layer Idle TCH=CLSACC 25 GPRSPRIO in BSC if PDCH PDCH idle idle or busy busy For the cell with high load [TCH cong > 2% & DTHNAMR =100] CLSSTATE=Active CLSLEVEL =15 RHYST=100 CLSRAMP=8 and for the neighbour [TCH cong < 2% & DTHNAMR < 50] HOCLSACC=On CLSACC = 25. HCS -----------------------------------------------------------------------------------------HCSBANDTHR= -95 dbm 900 GSM Macro (Layer=8, LYTRH= -75 dBm) 900 GSM micro (Layer=6, LYTRH= -75 dBm) for coverage 1800 GSM macro (Layer=3, LYTRH= -75 dBm) 1800 GSM micro (Layer=1, LYTRH= -75 dBm) for capacity 1800 > 1 900 > 2 HCSTRAFDISSTATE Over BSC in HO allow tch avail>= HCSIN 30 out HO allow tch avail <= HCSOUT 50 FASTMSREG HO>NHO in THO MS Directed to to higher layer Assignment to other cell-------------------------------MSC: HNDSDCCHTCH:(1) controls whether an intra-MSC inter-BSC BSC: Assoc=ON IBHOASS=ON to other BSC Better cell (Quality)------------(Quality)-------------------------------------------Assoc=ON SSEVALSI=6 to 9 SSRAMPSI=1 Worse cell (Congestion)----------(Congestion)---------------------------------------Check per neighbour handover success rate before implementing this feature. AW=ON assignment to a worse cell is allowed from that cell AWOFFSET=3 ( no congestion) 5 congestion 20 no interference SS+AWOFFSET MS measures SS(serving) =-70,AWOFFSET=15 allows assignment to neighbour with SS=
-85 or stronger Relation CAND=BOTH IHO ------------------------------------------------------------------------------------------------MAXIHO=2 hop 3 no hop TMAXIHO=7 TIHO=10 rxqual-ul > QOFFSETUL + FQSS(RXLEV_UL + SSOFFSETUL) rxqual-dl > QOFFSETDL + FQSS(RXLEV_DL + SSOFFSETDL) QOFFSETULN=13 (due to bad uplink quality) increase nbr of UL att decrease nbr of DL att IRC ----------------------------------------------------------------------------------------------------ICM4&5_TCH TCH Drop Reason, Bad Quality Uplink TRX DTRU RXD=AB Power Control DL SSDESDL = 90 QDESDL = 30 LCOMPDL = 10 QCOMPDL = 60
------------------------------------------------------------------------------UL AMR 92 92 94 30 40 40 6 6 6 60 60 60
Half rate tuning -----------------------------------------------------------------------TCH Traffic Average Number of available TCH roundup TCONGSAS TCONGSHO TMSESTB wasted traffic=TCH Traffic*(TCONGSAS+TCONG Traffic*(TCONGSAS+TCONGSHO)/TMSESTB SHO)/TMSESTB Total Traffic=wasted Traffic+TCH traffic roundup Amended Traffic=if(Total traffic>=87,87,Total Traffic) TSreqforAmendedTraffic Erlang table HRRatio=((TSreq/average HRRatio=((TSreq/averag e nbr avail TCH)-1)*100 NewHRRatio=if(HRratio>100,100,HRRatio) omittingnegative=if(NewHRRatio<0,20,NewHRRatio omittingnegative=if(Ne wHRRatio<0,20,NewHRRatio) ) roundup left=if(omitting<10,0,if(omitting<100,left(omi left=if(omitting<10,0, if(omitting<100,left(omitting),omitting)) tting),omitting)) right=if(omitting<10,omitting,if(omitting<100,right(omitting),omitting)) Rounded Right=if(right=100,100 Right=if(right=100,100,if(right<=5,5,0) ,if(right<=5,5,0) Merged=if(rounded=100,100,if(rounded=5,left&ro Merged=if(rounded=100, 100,if(rounded=5,left&rounded,(left+1)&rounded)) unded,(left+1)&rounded)) finalHR=Merged Adaptive configuration of logical channel----------------channel-----------------Increased STIME (40) will lower the SDCCH congestion while decreased SLEVEL (2) will raise it. TRH Load distribution:-----------distribution:-----------------------------------------------------------------------------RAHDC:CAPHYST=10,CAPLIM=20,STIME=0300,INTERVAL=24; RAHPI:MP=0; rahlc:AVELIM=25,NOTRHLIM=30,TRHLIM=10; TRTSI:MP=0,TIME=0200,RPL=240,NDAYS=365,DATE=120710; Flexible Abis -------------------------------------------------------------------------------------------------------------------
int
1. TAB level -----------------Full Rate AMR on 8 kbps TAB=AXEPARS ,DAMRREDUCE=1. Abis Triggered HR Allocation TAB=AXEPARS, ATHAABIS=1. Flexible Abis TAB=AXEPARS,FLEXABIS=1 2.TG level : ---------------ABISALLOC=FLEXIBLE 3.CHGR0 level ----------------------NUMREQEGPRBPC =6 if possible, check EGPRBPCLIMIT 4.Cell level --------------FPDCH = 2 or 1 or 0 it depends on data volume and CS congestion SPDCH For save GSL utilusation FLEXHIGHGPRS = 0 Abis -----AbisCap = TS64 +TS16/4 + SigTS SigTS = #TRX / ConFactor TS16 = #TRX*8 #BCCH #SDCCH TS64 Flexible Priority Handling of Packet Packet Data ---AXEPARS, PDCHPREEMPT=2 Cell, PDCHPREEMPT = 4
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Queuing Feature:-------------Feature:-------------------------------------------------------------------------------------------------------------------DESCRIPTION SOURCE NE LEVEL PARAMETER Call Queuing BSCPROP BSC MSQUEUING Abis Optimization:-----------Optimization:------------------------------------------------------------------------------------------------------------------Requires PGW Packet Gateway Requires R06A Requires dTRU based BTS 18 TRXs are handled with 1E1 SCGR NUMDEV DCP SDAMRREDABISTHR SDHRAABISTHR SDFRMAABISTHR ATHABIS DAMRCRABIS JBPTA AMR ----------------------------------------------------------------------------------------------------------------------------------------------------------------Besides the pre-defined codec sets (1, 2 and 5 for AMR FR and1 and 2 for AMR HR)
, both AMR FR and AMR HR codec set 3and 4 are available. These codec sets can be configured by the operator giving the possibility to fin e tune AMR parameters AMRFRSUPPORT 2 AMRHRSUPPORT 2 SET FR3 FR3 FR3 FR3 FR4 FR4 FR4 FR4 HR3 HR3 HR3 HR3 HR4 HR4 HR4
MODE 1 3 4 7 1 3 6 8 1 3 4 5 1 3 5
MODE THR HYST DTHAMR>DTHNAMR 50 20 or 40 70 60 90 80 RLINK LINKUP UP 20 RLINKUPAFR 32 RLINKUPAHR 32 RLINKT 20 RLINKTAFR 32 RLINKTAHR 32
THR
HYST
12 21 21
2 3 3
12 17 25
2 3 3
23 28 32
3 4 4
23 31
3 4
