Ch.04 Performance Management
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Transcript of Ch.04 Performance Management
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Performance Management
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Proprietary and Confidential
Radio Normal Propagation Conditions
Receiver
Threshold
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Radio Transmission Rain Attenuation
Nominalthreshold
Receiver
threshold
Applies to high
frequencies
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Radio Transmission Mutli-Path Reflections
Nominal
threshold
Receiver
threshold
Applies to all
frequencies
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RST MSTMSTMST RST RST RSTRST
RS RSRS RS
MS
RSRSRS
MS
Path layer
Higher order path
C-! "!# M$%s&
C-# "'#( M$%s&
Mapped ATM % )P
Section % Path layers in S*H Net+or,s
o+er order path
C-'. ".M$%s&
Mapped ATM % )P
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/( A. A A A' A' A' A. A. A
0' 1' 2' N N
*' *. *!
H. H. H. H! H! H!H'
0. 0. 0. 3' 3.
*# *4 *5
*6
*'(
S' 7' 7' 7. 7. M' 1. N
*8
*'.
*9
*''
N
STM-'RS:H
P:)NT1R
STM-'
MS:H
H'
A' A'
H'
A'MS
.M$%s
Media Specif ic$ytes
. M$%s asynchronous
;
MS .
S)
S) = Stuffing for .M$%s >ayside
MS '?. = Radio Protection S+itching
control
MS ! = R2-)d
Remote reset
ATPC1%M for $ytes@ 1' 2' 1.
N
S:H - Section :verhead
0' 0.= Parity $ytes; 1rror calculation; 0)P
M'= Remote 1rror )dentifier "MS-R1)&
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Performance= *efinitions and calculation
0loc,= A $loc, is defined as a group of successive $its that can $e allocated to the path
under test; 1ach $it $elong to a single $loc,; Monitoring ta,es advantage of theerror monitoring equipment $uilt into todayBs transmission systems such as CRC
"Cycling Redundancy Chec,& and $it parity techniques; 1rrors must $e detected
+ith at least 8( pro$a$ility +hich is met +ith CRC-# and 0)P-9 "0it )nterleaved
Parity&; )n S*H one $loc, is defined to $e one STM-' frame "'8 4'. $its&; )n P*H
other definitions apply; Refer to )TD-T E;9.9 for more info;
Principle of radio performance calculations
NE
1volution= 0'%0.%M' R1) RA*):1volution= 0'%0.%M' R1) )N1
Algorithm for
calculating E;9.5
performance for
'4 min; ' day and
' month period using
0' 0. and M' $ytes
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Performance parameters definitions
F 1rrored 0loc, 10=F A $loc, +hich one or more $its in error;
F 1rrored Second 1SF A one-second period +ith one or more errored $loc,s or at least one defect "path alarm&;
F Severely 1rrored Second S1SF A one-second period +hich contains ≥ !( errored $loc,s or at least one defect "path alarm&;
F 0ac,ground 0loc, 1rror 001F An errored $loc, not occurring as part of an S1S
F 1rrored second Ratio "1SR&F The ratio of 1S to a total seconds in availa$le time during a fiGed measurement interval;
F Severely 1rrored Second Ratio "S1SR&
F The ratio of S1S to total seconds in availa$le time during a fiGed measurement interval;
F 0ac,ground 0loc, 1rror Ratio "001R&F The ratio of 0ac,ground 0loc, 1rrors "001& to total $loc,s in availa$le time during a fiGedF measurement interval;
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Availa$ility
•The Performance Parameters are valid only +hen the system is in the Availa$ility state;
• Start of availa$ility= At start of time interval consisting of at least ten seconds that are
not severely errored;
• 1nd of availa$ility= At start of time interval containing at least ten consecutive S1S;
1Gample
'( sec; 9 sec; '( sec;
Dnavaila$ility detected Availa$ility detected
Dnavaila$le period Availa$le period
Time
Severely 1rrored Second "S1S&
1rrored Second "Non S1S&
1rror free Second
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•1na$le Performancecollection from element
menu in ED)
• :pen Historical Performance data
from element menu in ED)
Performance Measurements
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ie+ Performance Measurement Results
Time series
graph
F Ta$ular form
*istri$ution graph
Configura$le graph properties
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1rror counters
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Performance Reports
The reporting functionality ena$les a quic,
overvie+ as +ell as detailed analysis of theperformance of the
managed net+or,;
T+o graphical charts are displayed
Measurement types over time "G-
aGis= time y-aGis= measurement
value&
Measurement types over sourceNetwork Element "G-aGis= Net+or,
1lements y-aGis= measurement
value&
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Performance Reports; 1Gamples
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*etailed PM report
All collected PM data from all Net+or, 1lements matching the
filter is displayed in a ta$ular form
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Net+or, Time Synchroniation
• 1na$ling
synchroniation
from system
preferences
• Selecting N1s to $e
synchronied
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Thank You
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