chapter 1 2g optimization and planning
DESCRIPTION
خحفهةهئفهخىTRANSCRIPT
2g optimization and planning
TK2313 Page 2
Table of Content
1. The optimization process cycle 3
2. Quality of service objectives 6
3. Quality of service evaluation 9
2. Data analysis 52
3. Network capacity optimization 66
4. BSS parameters optimization 83
5. Examples of optimization actions at network level 200
2g optimization and planning
TK2313 Page 5
QoS
objective
Monitoring and collection of
observation data :
OMC counters, radio interface
parameters
Data analysis Optimization action
Optimization action validation
QoS evaluation
Optimization cycle in a GSM network
2g optimization and planning
TK2313 Page 9
3. Quality of service evaluation
3.1. Monitoring techniques
2g optimization and planning
TK2313 Page 10
Collection and global analysis of counters and
alarms at all levels (from physical layer to layer 3)
from the OMC
OMC
Reports
2g optimization and planning
TK2313 Page 17
e.g. : Coverage map after a measurement campaign
This map corresponds to processed
measurements of signal level, performed on radio
interface over a determined area
Best server distribution gives on each
point the cell offering the best signal for the mobile
Example of coverage map after a measurement
campaign
2g optimization and planning
TK2313 Page 18
tri-sectorial site
area covered by cell 0020-2
Example of coverage map after a measurement
campaign
2g optimization and planning
TK2313 Page 21
Capture example of data performance measurements in
GPRS
LLC performance
RLC/MAC performance
2g optimization and planning
TK2313 Page 35
MOC Call setup reminder
…
MS BTS BSC MSC
L2 Immediate assignment command (IAM message)
CC Setup
BSSMAP Assignment request
CC Call proceeding
RR channel request Channel required
Channel activation (ref. SDCCH)
Channel activation ack
(UA) CM service request
RACH
SDCCH
AGCH
SDCCH
SDCCH
SDCCH
Assignment complete
(SABM) CM service request (Estab Ind) CM service request BSSMAP Complete L3 Info (CM service request)
Authentication and ciphering
SDCCH
Channel activation (ref. TCH)
Channel activation ack
RR Assignment command(TCH)
UA
FACCHSABM Establishment Indication
FACCH
FACCH
L2 Immediate Assignment command (reject)
Channel activation nack
RR Immediate assignment (SDCCH)
RR Immediate assignment rej
Estab Failure
BSSMAP Assignment failure
BSSMAP Assignment failureChannel activation nack
RR Assignment complete
2g optimization and planning
TK2313 Page 42
Call_estab_fail_ratioMS BTS BSC MSC
L3 Immediate assignment command (IAM message)
CC Setup
BSSMAP Assignment request
CC Call proceeding
RR channel request Channel required
Channel activation (ref. SDCCH)
Channel activation ack
UA
RACH
SDCCH
AGCH
SDCCH
SDCCH
SDCCH
Assignment complete
SABM( CM service request ) Estab Ind( CM service request )
Authentication and cipheringSDCCH
Channel activation (ref. TCH)
Channel activation ack
RR Assignment command(TCH)
UA
FACCHSABM Establish Indication
FACCH
RR Assignment completeFACCH
L3 Immediate Assignment command (reject)
Channel activation nack
RR Immediate assignment (SDCCH)
RR Immediate assignment rej
Estab Failure
BSSMAP Assignment failure (1)
BSSMAP Assignment failure (2)Channel activation nack
set T3107
stop T3107RF channel release(SDCCH)
set T3101
stop T3101
BSSMAP Assignment failure (3)
BSSMAP Complete L3 Info (CM service req.)
2g optimization and planning
TK2313 Page 53
Real case of SDCCH allocation failure monitoring
o m c N a m e B s c N a m e s e c to rN a m e D a te
S D _ A L L O C
(C 1 0 3 4 )
TC H _ O V E R
( C 1 0 5 1 /2 )
S D _ A L L O C _ F A IL
(C 1 0 3 6 )
S D _ A L L O C _ F A IL _ R A TIO
(C 1 0 3 6 / (C 1 0 3 6 + C 1 0 3 4 +
C 1 0 5 1 /2 )
n e tw o rk x x x x x x 1 5 /4 /0 1 4 8 8 1 5 6 2 1 0 7 2 0 ,2 2 %
O M C 1 D N B S C 0 1 c e ll_ 0 1 1 5 /4 /0 1 6 8 6 2 0 2 6 4 3 ,7 0 %
O M C 1 D N B S C 0 4 c e ll_ 0 2 1 5 /4 /0 1 2 8 7 0 1 1 3 ,6 9 %
O M C 1 D N B S C 0 4 c e ll_ 0 3 1 5 /4 /0 1 6 6 4 3 0 2 1 2 3 ,0 9 %
O M C 1 D N B S C 0 3 c e ll_ 0 4 1 5 /4 /0 1 3 5 7 5 0 5 3 1 ,4 6 %
O M C 1 D N B S C 0 3 c e ll_ 0 5 1 5 /4 /0 1 4 8 9 3 0 5 7 1 ,1 5 %
O M C 1 D N B S C 0 1 c e ll_ 0 6 1 5 /4 /0 1 5 4 2 0 0 6 2 1 ,1 3 %
O M C 1 D N B S C 0 1 c e ll_ 0 7 1 5 /4 /0 1 4 9 3 5 0 5 6 1 ,1 2 %
O M C 1 D N B S C 0 1 c e ll_ 0 8 1 5 /4 /0 1 6 0 6 0 6 0 ,9 8 %
O M C 1 D N B S C 0 1 c e ll_ 0 9 1 5 /4 /0 1 5 3 5 1 0 3 8 0 ,7 1 %
O M C 1 D N B S C 0 5 c e ll_ 1 0 1 5 /4 /0 1 1 7 1 0 1 0 ,5 8 %
O M C 1 D N B S C 0 3 c e ll_ 1 1 1 5 /4 /0 1 2 5 7 2 0 1 5 0 ,5 8 %
O M C 1 D N B S C 0 3 c e ll_ 1 2 1 5 /4 /0 1 1 9 1 7 0 1 1 0 ,5 7 %
O M C 1 D N B S C 0 4 c e ll_ 1 3 1 5 /4 /0 1 2 5 6 0 0 1 4 0 ,5 4 %
O M C 1 D N B S C 0 4 c e ll_ 1 4 1 5 /4 /0 1 9 2 3 0 5 0 ,5 4 %
O M C 1 D N B S C 0 2 c e ll_ 1 5 1 5 /4 /0 1 3 5 3 4 0 1 6 0 ,4 5 %
O M C 1 D N B S C 0 1 c e ll_ 1 6 1 5 /4 /0 1 8 9 9 0 4 0 ,4 4 %
O M C 1 D N B S C 0 1 c e ll_ 1 7 1 5 /4 /0 1 4 1 2 4 0 1 8 0 ,4 3 %
O M C 1 D N B S C 0 3 c e ll_ 1 8 1 5 /4 /0 1 2 8 4 5 0 1 2 0 ,4 2 %
O M C 1 D N B S C 0 2 c e ll_ 1 9 1 5 /4 /0 1 4 0 8 2 0 1 5 0 ,3 7 %
O M C 1 D N B S C 0 1 c e ll_ 2 0 1 5 /4 /0 1 2 5 9 9 0 9 0 ,3 5 %
O M C 1 D N B S C 0 2 c e ll_ 2 1 1 5 /4 /0 1 3 5 7 5 0 1 2 0 ,3 3 %
O M C 1 D N B S C 0 3 c e ll_ 2 2 1 5 /4 /0 1 2 9 8 4 0 1 0 0 ,3 3 %
O M C 1 D N B S C 0 1 c e ll_ 2 3 1 5 /4 /0 1 9 0 4 0 3 0 ,3 3 %
O M C 1 D N B S C 0 2 c e ll_ 2 4 1 5 /4 /0 1 9 3 3 0 3 0 ,3 2 %
O M C 1 D N B S C 0 2 c e ll_ 2 5 1 5 /4 /0 1 3 0 2 7 0 9 0 ,3 0 %
O M C 1 D N B S C 0 5 c e ll_ 2 6 1 5 /4 /0 1 4 0 7 0 0 1 2 0 ,2 9 %
O M C 1 D N B S C 0 1 c e ll_ 2 7 1 5 /4 /0 1 3 8 2 0 1 0 ,2 6 %
O M C 1 D N B S C 0 2 c e ll_ 2 8 1 5 /4 /0 1 2 4 6 0 0 6 0 ,2 4 %
O M C 1 D N B S C 0 2 c e ll_ 2 9 1 5 /4 /0 1 2 5 7 2 0 6 0 ,2 3 %
O M C 1 D N B S C 0 5 c e ll_ 3 0 1 5 /4 /0 1 4 3 1 0 1 0 ,2 3 %
2g optimization and planning
TK2313 Page 54
Real case of SDCCH allocation failure monitoring
SDCCH_alloc_fail
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30 w orst ce lls
SD
CC
H a
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ca
tio
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SD_alloc
SD_alloc_fail
2g optimization and planning
TK2313 Page 56
Real case of TCH allocation failure monitoring
o m c N a m e B s c N a m e s e c to rN a m e D a te
TC H _ A L L O C
(C 1 0 5 1 /0 )
TC H _ R E E S
( C 1 0 5 1 /1 )
TC H _ O V E R
(C 1 0 5 1 /2 )
TC H _ F A IL
(C 1 0 3 9 )
TC H _ A L L O C _ F A IL _ R A TIO
(C 1 0 3 9 / (C 1 0 3 9 + C 1 0 5 1 /0 +
C 1 0 5 1 /1 + C 1 0 5 1 /2 )
n e tw o rk x x x x x x 1 5 /4 /0 1 1 8 2 0 8 1 3 3 3 3 9 5 1 6 4 3 1 6 4 9 9 5 8 ,0 8 %
O M C 1 D N B S C 0 1 c e ll_ 0 1 1 5 /4 /0 1 1 1 9 2 4 1 7 1 0 5 4 2 0 4 5 4 6 1 ,1 5 %
O M C 1 D N B S C 0 4 c e ll_ 0 2 1 5 /4 /0 1 1 2 2 9 8 2 7 8 4 3 1 6 8 9 5 5 6 ,2 0 %
O M C 1 D N B S C 0 4 c e ll_ 0 3 1 5 /4 /0 1 2 2 9 7 4 1 4 4 4 1 7 1 8 9 2 6 4 0 ,8 5 %
O M C 1 D N B S C 0 3 c e ll_ 0 4 1 5 /4 /0 1 1 8 2 2 1 6 1 1 1 6 1 2 8 9 1 3 9 ,9 9 %
O M C 1 D N B S C 0 3 c e ll_ 0 5 1 5 /4 /0 1 4 8 5 3 1 6 4 6 6 3 2 2 6 6 0 2 9 ,8 7 %
O M C 1 D N B S C 0 1 c e ll_ 0 6 1 5 /4 /0 1 1 6 7 4 2 7 8 1 3 6 8 7 4 9 5 2 9 ,1 8 %
O M C 1 D N B S C 0 1 c e ll_ 0 7 1 5 /4 /0 1 2 0 6 2 9 3 8 1 8 7 8 4 4 4 2 8 ,8 2 %
O M C 1 D N B S C 0 1 c e ll_ 0 8 1 5 /4 /0 1 2 9 0 7 4 7 7 5 0 8 4 6 3 2 2 ,1 0 %
O M C 1 D N B S C 0 1 c e ll_ 0 9 1 5 /4 /0 1 2 7 0 5 9 0 7 0 3 2 0 ,5 7 %
O M C 1 D N B S C 0 5 c e ll_ 1 0 1 5 /4 /0 1 7 8 5 1 3 6 1 1 8 3 6 1 8 ,8 3 %
O M C 1 D N B S C 0 3 c e ll_ 1 1 1 5 /4 /0 1 8 1 5 2 6 1 0 5 1 6 6 0 1 6 ,7 3 %
O M C 1 D N B S C 0 3 c e ll_ 1 2 1 5 /4 /0 1 1 4 0 3 2 1 1 1 8 1 2 5 2 5 1 5 ,0 8 %
O M C 1 D N B S C 0 4 c e ll_ 1 3 1 5 /4 /0 1 4 9 0 7 8 2 8 1 4 8 7 6 0 0 7 1 0 ,6 1 %
O M C 1 D N B S C 0 4 c e ll_ 1 4 1 5 /4 /0 1 4 1 3 0 6 1 6 8 0 8 4 5 6 9 9 ,7 8 %
O M C 1 D N B S C 0 2 c e ll_ 1 5 1 5 /4 /0 1 4 2 8 5 9 2 7 8 3 0 7 4 9 4 5 8 ,8 1 %
O M C 1 D N B S C 0 1 c e ll_ 1 6 1 5 /4 /0 1 3 8 9 0 3 3 9 8 1 9 3 4 1 9 7 ,9 2 %
O M C 1 D N B S C 0 1 c e ll_ 1 7 1 5 /4 /0 1 4 4 2 0 0 6 8 2 6 0 6 3 8 4 5 7 ,5 8 %
O M C 1 D N B S C 0 3 c e ll_ 1 8 1 5 /4 /0 1 6 5 7 6 1 8 2 0 5 2 0 7 ,2 9 %
O M C 1 D N B S C 0 2 c e ll_ 1 9 1 5 /4 /0 1 7 2 8 8 1 3 3 2 5 6 7 7 ,1 8 %
O M C 1 D N B S C 0 1 c e ll_ 2 0 1 5 /4 /0 1 1 8 6 7 9 8 1 0 4 2 1 4 7 2 6 ,9 4 %
O M C 1 D N B S C 0 2 c e ll_ 2 1 1 5 /4 /0 1 3 6 0 6 1 1 0 5 6 1 4 2 9 1 1 6 ,5 3 %
O M C 1 D N B S C 0 3 c e ll_ 2 2 1 5 /4 /0 1 3 4 5 8 9 1 7 2 0 9 9 2 2 0 3 5 ,6 6 %
O M C 1 D N B S C 0 1 c e ll_ 2 3 1 5 /4 /0 1 4 5 8 2 5 1 2 4 9 5 ,1 5 %
O M C 1 D N B S C 0 2 c e ll_ 2 4 1 5 /4 /0 1 5 7 6 8 6 0 1 0 3 1 4 5 ,1 0 %
O M C 1 D N B S C 0 2 c e ll_ 2 5 1 5 /4 /0 1 3 1 6 6 0 7 4 7 9 1 6 8 3 4 ,9 8 %
O M C 1 D N B S C 0 5 c e ll_ 2 6 1 5 /4 /0 1 4 4 8 5 4 4 2 0 9 4 ,4 4 %
O M C 1 D N B S C 0 1 c e ll_ 2 7 1 5 /4 /0 1 1 7 9 2 2 3 9 6 5 6 8 2 1 4 ,2 2 %
O M C 1 D N B S C 0 2 c e ll_ 2 8 1 5 /4 /0 1 2 4 2 3 3 1 4 8 2 9 1 1 0 2 4 ,2 1 %
O M C 1 D N B S C 0 2 c e ll_ 2 9 1 5 /4 /0 1 1 0 0 6 2 9 6 1 4 3 9 4 ,1 5 %
O M C 1 D N B S C 0 5 c e ll_ 3 0 1 5 /4 /0 1 4 5 5 4 1 6 5 1 9 6 4 ,1 1 %
2g optimization and planning
TK2313 Page 57
Real case of TCH allocation failure monitoringT C H _a llo c_ fa il
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30 worst ce lls
TC
H a
llo
ca
tio
n
TC H_ALLO C
TC H_ALLO C _FAIL
2g optimization and planning
TK2313 Page 59
Real case of call assignment failure monitoring
o m c N a m e B s c N a m e s e c t o rN a m e D a t e
A S S IG N C M D
(C 1 0 4 9 )
A S S IG N
C O M P
(C 1 0 5 0 ) A S S IG N F A IL A S S IG N _ F A IL _ R A T IO
n e t w o rk x x x x x x 1 5 / 4 / 0 1 1 2 1 8 9 4 4 1 1 8 7 8 8 3 2 3 6 0 3 2 , 5 5 %
O M C 2 S W B S C 0 1 c e l l_ 0 1 1 5 / 4 / 0 1 4 6 6 0 4 0 2 5 5 1 3 1 3 , 6 3 %
O M C 2 S W B S C 0 4 c e l l_ 0 2 1 5 / 4 / 0 1 6 7 4 4 5 8 6 0 6 7 5 1 3 , 1 1 %
O M C 2 S W B S C 0 4 c e l l_ 0 3 1 5 / 4 / 0 1 1 1 5 3 4 1 0 1 2 3 1 3 0 2 1 2 , 2 3 %
O M C 2 S W B S C 0 3 c e l l_ 0 4 1 5 / 4 / 0 1 2 0 6 7 1 8 2 1 2 0 3 1 1 , 9 0 %
O M C 2 S W B S C 0 3 c e l l_ 0 5 1 5 / 4 / 0 1 7 9 4 6 7 0 9 0 7 8 8 1 0 , 7 7 %
O M C 2 S W B S C 0 1 c e l l_ 0 6 1 5 / 4 / 0 1 8 3 8 2 7 5 9 7 7 2 9 9 , 3 7 %
O M C 2 S W B S C 0 1 c e l l_ 0 7 1 5 / 4 / 0 1 2 1 3 7 1 9 6 1 1 4 3 8 , 2 4 %
O M C 2 S W B S C 0 1 c e l l_ 0 8 1 5 / 4 / 0 1 6 1 1 6 5 6 4 9 4 1 4 7 , 6 4 %
O M C 2 S W B S C 0 1 c e l l_ 0 9 1 5 / 4 / 0 1 5 5 6 8 5 1 6 1 3 0 1 7 , 3 1 %
O M C 2 S W B S C 0 5 c e l l_ 1 0 1 5 / 4 / 0 1 5 3 1 5 4 9 2 9 3 3 4 7 , 2 6 %
O M C 2 S W B S C 0 3 c e l l_ 1 1 1 5 / 4 / 0 1 2 4 2 3 2 2 5 4 1 2 6 6 , 9 7 %
O M C 2 S W B S C 0 3 c e l l_ 1 2 1 5 / 4 / 0 1 2 7 3 3 2 5 6 1 1 4 5 6 , 2 9 %
O M C 2 S W B S C 0 4 c e l l_ 1 3 1 5 / 4 / 0 1 4 0 3 3 7 9 1 4 5 , 9 6 %
O M C 2 S W B S C 0 4 c e l l_ 1 4 1 5 / 4 / 0 1 2 7 3 3 2 5 7 3 1 3 4 5 , 8 5 %
O M C 2 S W B S C 0 2 c e l l_ 1 5 1 5 / 4 / 0 1 5 8 8 8 5 5 4 6 1 7 8 5 , 8 1 %
O M C 2 S W B S C 0 1 c e l l_ 1 6 1 5 / 4 / 0 1 4 3 7 7 4 1 2 3 1 8 8 5 , 8 0 %
O M C 2 S W B S C 0 1 c e l l_ 1 7 1 5 / 4 / 0 1 5 1 9 4 8 9 1 6 5 , 7 8 %
O M C 2 S W B S C 0 3 c e l l_ 1 8 1 5 / 4 / 0 1 1 9 4 7 1 8 3 6 7 6 5 , 7 0 %
O M C 2 S W B S C 0 2 c e l l_ 1 9 1 5 / 4 / 0 1 5 5 9 4 5 2 7 9 2 6 0 5 , 6 3 %
O M C 2 S W B S C 0 1 c e l l_ 2 0 1 5 / 4 / 0 1 1 1 1 1 5 1 0 4 9 1 5 1 3 5 , 6 1 %
O M C 2 S W B S C 0 2 c e l l_ 2 1 1 5 / 4 / 0 1 7 8 3 6 7 4 0 0 3 7 0 5 , 5 6 %
O M C 2 S W B S C 0 3 c e l l_ 2 2 1 5 / 4 / 0 1 7 6 0 0 7 2 0 9 2 9 6 5 , 1 4 %
O M C 2 S W B S C 0 1 c e l l_ 2 3 1 5 / 4 / 0 1 3 9 0 7 3 7 0 9 1 4 8 5 , 0 7 %
O M C 2 S W B S C 0 2 c e l l_ 2 4 1 5 / 4 / 0 1 3 2 2 3 0 6 1 3 4 , 9 7 %
O M C 2 S W B S C 0 2 c e l l_ 2 5 1 5 / 4 / 0 1 4 8 8 7 4 6 4 9 1 9 8 4 , 8 7 %
O M C 2 S W B S C 0 5 c e l l_ 2 6 1 5 / 4 / 0 1 3 3 5 3 3 1 9 1 1 3 2 4 , 8 3 %
O M C 2 S W B S C 0 1 c e l l_ 2 7 1 5 / 4 / 0 1 6 5 5 0 6 2 4 0 2 0 1 4 , 7 3 %
O M C 2 S W B S C 0 2 c e l l_ 2 8 1 5 / 4 / 0 1 5 1 6 4 4 9 2 3 1 8 0 4 , 6 7 %
O M C 2 S W B S C 0 2 c e l l_ 2 9 1 5 / 4 / 0 1 8 1 0 8 7 7 3 9 3 2 6 4 , 5 5 %
O M C 2 S W B S C 0 5 c e l l_ 3 0 1 5 / 4 / 0 1 4 0 6 7 3 8 8 8 1 2 6 4 , 4 0 %
2g optimization and planning
TK2313 Page 60
Real case of call assignment failure monitoring
ca ll_ass ig n _ fa ilu re
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30 worst ce lls
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AS S IGN C MD
AS S IGN_FAIL
2g optimization and planning
TK2313 Page 62
Real case of handover failure monitoring
o m c N a m e B s c N a m e s e c t o rN a m e D a t e IN C _ H O _ IN TR A _ R E Q
IN C _ H O _ IN TR A
_ C M D
IN C _ H O _ IN TR A _
C O M P
IN C _ H O _ IN TR A _
R E T_ o n O L D IN C _ H O _ IN TR A _ F A IL _ R A TIO
n e t w o rk x x x x x x 1 5 / 4 / 0 1 7 7 4 9 9 7 5 7 9 3 7 1 3 2 1 3 9 7 2 5 , 9 0 %
O M C 1 D N B S C 0 1 c e l l_ 0 1 1 5 / 4 / 0 1 3 3 0 3 1 0 0 , 0 0 %
O M C 1 D N B S C 0 4 c e l l_ 0 2 1 5 / 4 / 0 1 8 4 5 8 4 5 1 4 1 6 9 4 8 3 , 3 1 %
O M C 1 D N B S C 0 4 c e l l_ 0 3 1 5 / 4 / 0 1 1 2 9 1 2 9 3 9 8 8 6 9 , 7 7 %
O M C 1 D N B S C 0 3 c e l l_ 0 4 1 5 / 4 / 0 1 3 6 3 6 1 3 2 3 6 3 , 8 9 %
O M C 1 D N B S C 0 3 c e l l_ 0 5 1 5 / 4 / 0 1 1 1 9 1 1 9 6 2 5 5 4 7 , 9 0 %
O M C 1 D N B S C 0 1 c e l l_ 0 6 1 5 / 4 / 0 1 9 9 5 4 4 4 , 4 4 %
O M C 1 D N B S C 0 1 c e l l_ 0 7 1 5 / 4 / 0 1 4 4 4 4 2 6 1 8 4 0 , 9 1 %
O M C 1 D N B S C 0 1 c e l l_ 0 8 1 5 / 4 / 0 1 3 3 2 1 3 3 , 3 3 %
O M C 1 D N B S C 0 1 c e l l_ 0 9 1 5 / 4 / 0 1 1 7 1 7 1 2 5 2 9 , 4 1 %
O M C 1 D N B S C 0 5 c e l l_ 1 0 1 5 / 4 / 0 1 1 5 6 1 5 6 1 1 2 4 4 2 8 , 2 1 %
O M C 1 D N B S C 0 3 c e l l_ 1 1 1 5 / 4 / 0 1 1 9 1 9 1 4 5 2 6 , 3 2 %
O M C 1 D N B S C 0 3 c e l l_ 1 2 1 5 / 4 / 0 1 1 4 6 1 4 6 1 0 8 3 5 2 6 , 0 3 %
O M C 1 D N B S C 0 4 c e l l_ 1 3 1 5 / 4 / 0 1 2 7 2 7 2 0 7 2 5 , 9 3 %
O M C 1 D N B S C 0 4 c e l l_ 1 4 1 5 / 4 / 0 1 2 4 2 4 1 8 6 2 5 , 0 0 %
O M C 1 D N B S C 0 2 c e l l_ 1 5 1 5 / 4 / 0 1 3 7 3 7 2 8 8 2 4 , 3 2 %
O M C 1 D N B S C 0 1 c e l l_ 1 6 1 5 / 4 / 0 1 6 6 6 6 5 0 1 6 2 4 , 2 4 %
O M C 1 D N B S C 0 1 c e l l_ 1 7 1 5 / 4 / 0 1 6 6 6 6 5 0 1 4 2 4 , 2 4 %
O M C 1 D N B S C 0 3 c e l l_ 1 8 1 5 / 4 / 0 1 1 7 1 7 1 3 3 2 3 , 5 3 %
O M C 1 D N B S C 0 2 c e l l_ 1 9 1 5 / 4 / 0 1 1 8 4 1 8 4 1 4 1 4 2 2 3 , 3 7 %
O M C 1 D N B S C 0 1 c e l l_ 2 0 1 5 / 4 / 0 1 1 3 1 3 1 0 3 2 3 , 0 8 %
O M C 1 D N B S C 0 2 c e l l_ 2 1 1 5 / 4 / 0 1 2 7 2 7 2 1 6 2 2 , 2 2 %
O M C 1 D N B S C 0 3 c e l l_ 2 2 1 5 / 4 / 0 1 5 1 5 1 4 0 1 0 2 1 , 5 7 %
O M C 1 D N B S C 0 1 c e l l_ 2 3 1 5 / 4 / 0 1 8 5 8 5 6 8 1 7 2 0 , 0 0 %
O M C 1 D N B S C 0 2 c e l l_ 2 4 1 5 / 4 / 0 1 2 5 2 5 2 0 5 2 0 , 0 0 %
O M C 1 D N B S C 0 2 c e l l_ 2 5 1 5 / 4 / 0 1 5 0 2 5 0 2 4 0 5 9 2 1 9 , 3 2 %
O M C 1 D N B S C 0 5 c e l l_ 2 6 1 5 / 4 / 0 1 1 6 1 6 1 3 2 1 8 , 7 5 %
O M C 1 D N B S C 0 1 c e l l_ 2 7 1 5 / 4 / 0 1 2 7 2 7 2 2 3 1 8 , 5 2 %
O M C 1 D N B S C 0 2 c e l l_ 2 8 1 5 / 4 / 0 1 6 5 6 5 5 3 1 1 1 8 , 4 6 %
O M C 1 D N B S C 0 2 c e l l_ 2 9 1 5 / 4 / 0 1 2 2 2 2 1 8 4 1 8 , 1 8 %
O M C 1 D N B S C 0 5 c e l l_ 3 0 1 5 / 4 / 0 1 2 8 2 8 2 3 5 1 7 , 8 6 %
2g optimization and planning
TK2313 Page 63
Real case for handover failure monitoringin c _ in tra _ H O _ fa il
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ll_
19
ce
ll_
20
ce
ll_
21
ce
ll_
22
ce
ll_
23
ce
ll_
24
ce
ll_
25
ce
ll_
26
ce
ll_
27
ce
ll_
28
ce
ll_
29
ce
ll_
30
30 w o rst ce lls
ha
nd
ov
er f
ail
ure
s
INC _HO _INT R A_C MD
INC _HO _INT R A_C O MP
2g optimization and planning
TK2313 Page 80
Overall capacity optimization processcapacity audit
-load distribution on relevant boards
-CPU activity analysis
-capacity forecast
capacity audit
-load distribution on relevant boards
-CPU activity analysis
-capacity forecast
local optimization
-LAPD load balancing
-CPU activity troubleshooting
-capacity forecast
local optimization
-LAPD load balancing
-CPU activity troubleshooting
-capacity forecast
overall optimization
-site reparenting : BTS-BSC and BSC-MSC
-LAC repartitioning
-capacity forecast
overall optimization
-site reparenting : BTS-BSC and BSC-MSC
-LAC repartitioning
-capacity forecast
New equipment introduction
-HW and SW upgrade planning
-New equipment dimensioning
New equipment introduction
-HW and SW upgrade planning
-New equipment dimensioning
Forecasts
meet service
expectancies ?
Forecasts
meet service
expectancies ?
Forecasts
meet service
expectancies ?
END
END
END
NO
NO
NO
2g optimization and planning
TK2313 Page 86
• Here is a part of the bts object, it contains
different kinds of parameters as specified
previously :
design parameter
system parameter
optimization parameter
operating parameter
product parameter
• During the optimization process, we will
essentially deal with changes on
optimization parameters
• note : many features in the system are
vendor-dependent and some of them may
affect the system performances the better we know the vendor equipments,
the better we can optimize
Example of a MOC with its parameters
2g optimization and planning
TK2313 Page 99
6.2. Radio procedures optimization
6.2.1. Cell selection
Reminder on cell selection procedureList of frequencies of the
selected PLMN
Eligible cell ? Selection of another
PLMN
C1 computation for best eligible cells
Suitable cell ?
Look for the cell with the best C1 in the suitable cells
IMSI Attach
Rejected ? PLMN set in the forbidden
PLMN listEnd of cell selection
no
no
no
yes
yes
yes
-cell of selected PLMN-cell not barred
-eligible cell with C1>0
C1 = rxLev-rxLevAccessMin-MAX [(msTxPwrMaxCCH - P),0]
rxLecAccessMin : min rxlev to
access to the cell
rxLev : signal level received by
the mobile from the cell
msTxPwrMaxCCH : max power
that MS can use to access on
RACH
P : max of MS power according to
its classmark
rxLecAccessMin : min rxlev to
access to the cell
rxLev : signal level received by
the mobile from the cell
msTxPwrMaxCCH : max power
that MS can use to access on
RACH
P : max of MS power according to
its classmark
2g optimization and planning
TK2313 Page 197
One shot algorithm
no path compensation
partial path compensation
full path compensation
K = 0
0 <K < 1
K = 1
rxLev virtual
RXLEV
lRxLevXXP
transmitter receiver
Pmax
P
Pmin
2g optimization and planning
TK2313 Page 203
Activating BS power control
handover evolution
0
2000
4000
6000
8000
10000
12000
14000
16000
16/1
1/04
17/1
1/04
18/1
1/04
19/1
1/04
20/1
1/04
21/1
1/04
22/1
1/04
23/1
1/04
24/1
1/04
25/1
1/04
26/1
1/04
27/1
1/04
28/1
1/04
29/1
1/04
time
ha
nd
ov
er
nu
mb
er
incoming intra BSC4
outgoing inter BSC3
outgoing inter BSC4
2g optimization and planning
TK2313 Page 209
Hardware failure detectionincoming handover intra failure ratio
0%
10%20%
30%
40%
15
/05
/04
22
/05
/04
29
/05
/04
05
/06
/04
12
/06
/04
19
/06
/04
26
/06
/04
03
/07
/04
time
ha
nd
ov
er
fail
ure
incoming handover intra fai lure
ratio
in c o m in g h a n d o v e r in tr a f a ilu r e r a t io
0 %
1 0 %
2 0 %
3 0 %
4 0 %
5 0 %
15
/05
/04
22
/05
/04
29
/05
/04
05
/06
/04
12
/06
/04
19
/06
/04
26
/06
/04
03
/07
/04
t im e
ha
nd
ov
er f
ail
ure
han dove r fa ilu re
cell 308-1
cell 308-2