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GPRS QoS in B7/B8 releases :General Presentation
December 2003
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Agenda
> OMC-R QoS indicators
> End user QoS
> GPRS QoS follow-up method
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OMC-R QoS indicators
> BSC and MFS counters allow the monitoring of 3 interfaces
OMC-R QoS indicators
Radio interface Gb interface Ater interface
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OMC-R QoS indicators - Radio interface
> Radio interface indicators : DL and UL TBF establishment
DL and UL TBF release
DL and UL TBF progress
DL and UL TBF : RLC statistics Sessions and transfers
GPRS radio resources = PDCH
GPRS radio resources = MPDCH
GPRS service and CCCH load
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OMC-R QoS indicators - Radio interfaceDL and UL TBF establishment
> DL and UL TBF establishment : introduction
TBF establishmentNumber of requests
Number of successes
Success rate
Failure causes
time
TBF end
Congestion
Radio
BSS
Gb
Distribution of number of TS requested/obtained
Radio
Ater
GPU
Different cases :
DL/UL : idle & transfer mode
DL/UL : MPDCH or not
DL : DRX & non-DRX
DL : T3192 runningAllocation rate
Overall
description
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OMC-R QoS indicators - Radio interfaceDL and UL TBF establishment
> DL and UL TBF establishment : indicators = f(counters)
Transfer phase Fast DL TBF re-establishment T3192 Non-DRX mode DRX mode
time
DL TBF establishment requests DL TBF establishment successes
Transfer mode P91b Transfer mode P90b
While T3192 running P91e While T3192 running P90eIdle mode + non-DRX mode + MPDCH P91d Idle mode + non-DRX mode + MPDCH P90d
Idle mode + non-DRX mode + no MPDCH P91f Idle mode + non-DRX mode + no MPDCH P90f
Idle mode + DRX mode + MPDCH P91a Idle mode + DRX mode + MPDCH P90a
Idle mode + DRX mode + no MPDCH P91c Idle mode + DRX mode + no MPDCH P90c
Idle mode + with / without MPDCH P91g Idle mode + with / without MPDCH P90g
UL TBF establishment requests UL TBF establishment successesIdle mode + MPDCH P62a Idle mode + MPDCH P30a
Idle mode + no MPDCH P62c Idle mode + no MPDCH P30c
Transfer mode P62b Transfer mode P30b
Idle mode + with / without MPDCH P62g Idle mode + with / without MPDCH P30g
GPRS/EGPRS
request/success
GPRS/EGPRS
request/success
Only
EGPRS
Only
EGPRS
TBF
request&success
B7/B8
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OMC-R QoS indicators - Radio interfaceDL and UL TBF establishment
> DL and UL TBF establishment : indicators = f(counters)
% TBF establishment failures
Downlink Uplink
Congestion rate (radio-Ater-
GPU)
(P14 + P105g + P105c + P105e) / (P91a +P91b+ P91c +
P91d + P91e + P91f)
Congestion (radio-Ater-GPU)
rate
(P27 + P105h + P105d + P105f) / (P62a + P62b + P62c)
Radio congestion rate P14 / (P91a + P91b + P91c + P91d + P91e + P91f) Radio congestion rate P27 / (P62a + P62b + P62c)
% of time during which
PDCH allocation for DL TBFis not possible due to
congestion
(P13 / 10) / GP % of time during which
PDCH allocation for UL TBFis not possible due to
congestion
(P26 / 10) / GP
ATer congestion rate P105g / (P91a + P91b + P91c + P91d + P91e + P91f) ATer congestion rate P105h / (P62a + P62b + P62c)
DSP congestion rate P105c / (P91a + P91b + P91c + P91d + P91e + P91f) DSP congestion rate P105d / (P62a + P62b + P62c)
CPU congestion rate P105e / (P91a + P91b + P91c + P91d + P91e + P91f) CPU congestion rate P105f / (P62a + P62b + P62c)
Radio problem rate P15 / (P91a + P91b + P91c + P91d + P91e + P91f) Radio problem rate P28 / (P62a + P62b + P62c)
Gb problem rate P65 / (P91a + P91b + P91c + P91d + P91e + P91f) Gb problem rate P66 / (P62a + P62b + P62c)
BSS problem rate (P91a + P91b + P91c + P91d + P91e + P91f - P14 - P15
- P90a - P90b - P90c- P90d - P90e - P90f - P65 - P105e
- P105c - P105g) / (P91a + P91b + P91c + P91d + P91e+ P91f)
BSS problem rate ((P62a + P62b + P62c - P27 - P28 - P30a - P30b - P30c
- P66 - P105h - P105f - P105d) / (P62a + P62b + P62c)
TBF
establishment
failures
B7/B8
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OMC-R QoS indicators - Radio interfaceDL and UL TBF establishment
> DL and UL TBF establishment : indicators = f(counters)TS distribution
DL TBF establishment UL TBF establishment
Number of TBF establishments requesting 1 slotwhich are satisfied at once by the initialallocation
P160 Number of TBF establishments requesting 1 slotwhich are satisfied at once by the initialallocation
P161
Number of TBF establishments requesting 2 or 3slots which are satisfied at once by the initial
allocation
P162 Number of TBF establishments requesting 2 or 3slots which are satisfied at once by the initial
allocation allocation
P163
Number of TBF establishments requesting 4 or 5
slots which are satisfied at once by the initialallocation
P164 Number of TBF establishments requesting 4 or 5
slots which are satisfied at once by the initialallocation
P165
Number of TBF establishments requesting 2 or 3slots which are partially satisfied by the initial
allocation
P166 Number of TBF establishments requesting 2 or 3slots which are partially satisfied by the initial
allocation
P167
Number of TBF establishments requesting 4 or 5slots which are partially satisfied by the initial
allocation
P168 Number of TBF establishments requesting 4 or 5slots which are partially satisfied by the initial
allocation
P169
TBF establishments requesting 2 or 3 slots partialsuccess rate
P166 /(P162 + P166)
TBF establishments requesting 2 or 3 slots partialsuccess rate
P167 /(P163 + P167)
TBF establishments requesting 4 or 5 slots partial
success rate
P168 /
(P164 + 168)
TBF establishments requesting 4 or 5 slots partial
success rate
P169 /
(P165 + P169)
TBF
establishment
per MS types
B7/B8
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OMC-R QoS indicators - Radio interfaceDL and UL TBF establishment
Downlink TBF establishment per MS type
0%
20%
40%
60%
80%
100%
14/08/200
3
16/08/200
3
18/08/200
3
20/08/200
3
22/08/200
3
24/08/200
3
26/08/200
3
28/08/200
3
30/08/200
3
01/09/200
3
03/09/200
3
05/09/200
3
07/09/200
3
09/09/200
3
11/09/200
3
13/09/200
3
91
92
93
94
95
96
97
98
99
4-5 partially
2-3 partially
4 or 5 TS
2 or 3 TS
1 TS
Uplink TBF establishment per MS type
0%
20%
40%
60%
80%
100%
14/08/200
3
16/08/200
3
18/08/200
3
20/08/200
3
22/08/200
3
24/08/200
3
26/08/200
3
28/08/200
3
30/08/200
3
01/09/200
3
03/09/200
3
05/09/200
3
07/09/200
3
09/09/200
3
11/09/200
3
13/09/200
3
96.5
97
97.5
98
98.5
99
99.5
4-5 partially
2-3 partially
4 or 5 TS
2 or 3 TS
1 TS
RNO
reports
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OMC-R QoS indicators - Radio interfaceDL and UL TBF establishment
> DL and UL TBF establishment : indicators = f(counters)
KPI
KPI
TBF establishment requests and successes
Downlink Uplink
Total number of TBF
establishment
requests
P91a+P91b+P91c+P91d+P91e
+P91fTotal number of
TBF
establishment
requests
P62a+P62b+P62c
Total number of TBF
establishmentsuccesses
P90a+P90b+P90c+P90d+P90e
+P90f
Total number of
TBF establishmentsuccesses
P30a+P30b+P30c
TBF establishment
success rate
(P90a+P90b+P90c+P90d+P90
e+P90f) /
(P91a+P91b+P91c+P91d+P91e+P91f)
TBF
establishment
success rate
(P30a+P30b+P30c) /
(P62a+P62b+P62c)
TBF establishmentallocation rate
( (P91a + P91b + P91c + P91d+ P91e + P91f) - (P105c +P105e + P14 + P105g)) /
(P91a + P91b + P91c + P91d
+ P91e + P91f)
TBF establishmentallocation rate
((P62a + P62b + P62c) -(P105f + P27 +P105h +P105d)) / (P62a + P62b
+ P62c)
TBF
request&success
KPI
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OMC-R QoS indicators - Radio interfaceDL and UL TBF establishment
> Thresholds :
Significant traffic is reached for 2000 DL TBF requests/cell/day
(less when Delayed downlink TBF release is activated)
UL/DL TBF establishment success rate is seen as good above 95%
(except if CS2 is used at beginning of DL TBF)
Downlink TBF Establishment
0
2000
4000
6000
8000
10000
12000
14000
16000
14/08
/200
3
16/08
/200
3
18/08
/200
3
20/08
/200
3
22/08
/200
3
24/08
/200
3
26/08
/200
3
28/08
/200
3
30/08
/200
3
01/09
/200
3
03/09
/200
3
05/09
/200
3
07/09
/200
3
09/09
/200
3
11/09
/200
3
13/09
/200
3
90
92
94
96
98
100
102 BSS fail
Gb fail
Radio fail
Congestion
Request
% Allocated
% Success
B7
Thresholds
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OMC-R QoS indicators - Radio interfaceDL and UL TBF release
>DL and UL TBF release : introduction
TBF establishment
time
TBF end Normal release rate
Acceptable release rate
Drop causes
PDCH fast pre-emption
Suspend procedure
Flush messageRadio
Radio fail during resource realloc exec
BSS
Gb
Other problems : blocking situation +
N_stagnating window
Overall
description
Cell reselection (B8)
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OMC-R QoS indicators - Radio interfaceDL and UL TBF release
> DL and UL TBF release : indicators = f(counters)
TBF
release
KPI
TBF releases and drops
Downlink Uplink
Normal release rate P9 / (P90a + P90b + P90c +P90d + P90e + P90f)
Normal release rate P22 / (P30a + P30b + P30c)
Acceptable release rate (P146 + P98a + P396a - (
(P434b + P434d) - (P396a))) /
(P90a + P90b + P90c + P90d
+ P90e + P90f)
Acceptable release rate (P147 + P98b +P396b -
(P434a + P434c) - (P396b))) /
(P30a + P30b + P30c)
Drop rate (P90a + P90b + P90c + P90d+ P90e + P90f - P9 - P146 -
P98a - ( (P434b + P434d) -
(P396a))) / (P90a + P90b +
P90c + P90d + P90e + P90f)
Drop rate (P30a + P30b + P30c - P22 -P147 - P98b - (P434a +
P434c) - (P396b))) / (P30a +
P30b + P30c)
Release rate due to PDCHfast pre-emption
P146 / (P90a + P90b + P90c
+P90d + P90e)
Release rate due to PDCHfast pre-emption
P147 / (P30a + P30b + P30c)
Release rate due tosuspend procedure
P98a / (P90a + P90b + P90c +P90d + P90e + P90f)
Release rate due tosuspend procedure
P98b / (P30a + P30b + P30c)
Release rate due to Flush
messageP396a / (P90a + P90b + P90c
+ P90d + P90e + P90f)
Release rate due to Flush
messageP396b / (P30a + P30b + P30c)
KPI
KPI
KPI
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OMC-R QoS indicators - Radio interfaceDL and UL TBF release
Downlink Data Transfer
050
100150200250300350400450500
14/08/200
3
16/08/200
3
18/08/200
3
20/08/200
3
22/08/200
3
24/08/200
3
26/08/200
3
28/08/200
3
30/08/200
3
01/09/200
3
03/09/200
3
05/09/200
3
07/09/200
3
09/09/200
3
11/09/200
3
13/09/200
3
0
20
40
60
80
100
120
BSS pb
Gb drop
Blocking
dropStagnat drop
Radio pb
% Acc
Release% Norm
Release
Uplink Data Transfer
0
50100
150
200
250
300
350
14/08/200
3
16/08/200
3
18/08/200
3
20/08/200
3
22/08/200
3
24/08/200
3
26/08/200
3
28/08/200
3
30/08/200
3
01/09/200
3
03/09/200
3
05/09/200
3
07/09/200
3
09/09/200
3
11/09/200
3
13/09/200
3
0
20
40
60
80
100
120
BSS pb
Gb drop
Blocking pb
Stagnat pb
Radio pb
% Acc
Release% Norm
Release
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OMC-R QoS indicators - Radio interfaceDL and UL TBF release
> DL and UL TBF release : indicators = f(counters)TBF drop causes
DL TBF UL TBF
Radio problem : realradio pb + reselections
P302b / (P90a + P90b + P90c +
P90d + P90e + P90f)
Radio problem : realradio pb + reselections
P302c / (P30a + P30b + P30c)
Real radio drop rate (P302b-( - (P434b + P434d -P396a)) / (P90a + P90b + P90c +
P90d + P90e + P90f)
Real radio drop rate (P302c - (P434a + P434c -P396b)) / (P30a + P30b + P30c)
Radio failure duringradio resource realloc
execution
(P407a + P407b + P407c +P407d) / (P90a + P90b + P90c +
P90d + P90e + P90f)
Radio failure duringradio resource realloc
execution
(P408a + P408b + P408c +P408d) / (P30a + P30b + P30c)
Gb problem P11 / (P90a + P90b + P90c +P90d + P90e + P90f )
Gb problem P24 / ( P30a + P30b + P30c)
N_StagnatingWindow P385a / (P90a + P90b + P90c +P90d + P90e + P90f)
N_StagnatingWindow P385b / (P30a + P30b + P30c)
Blocking situation P303a / (P90a + P90b + P90c +
P90d + P90e + P90f)
Blocking situation P303b / (P30a + P30b + P30c)
BSS problem (P90a + P90b + P90c + P90d +P90e + P90f - P146 - P98a -
P396a - P9 - P302b - P11 - P385a- P303a - P407a - P407b - P407c) / (P90a + P90b + P90c + P90d +
P90e + P90f)
BSS problem (P30a + P30b + P30c - P22 -P147 - P98b - P396b - P24 -
P385b - P303b - P408a - P408b -P408c - P302c) / ( P30a + P30b +P30c)
TBF
abnormal release
B7/B8
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OMC-R QoS indicators - Radio interfaceDL and UL TBF release
> Thresholds : When Delayed DL TBF release is not activated and CS2 is not
used at the beginning of TBF :
UL/DL TBF normal release rate is seen as good above 98 %
When Delayed DL TBF release is activated or CS2 is used atbeginning of TBF (without optimisation of the coding schemeadaptation) :
Threshold of DL TBF normal release rate should be lower.
B7
Thresholds
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OMC-R QoS indicators - Radio interfaceDL and UL TBF progress
> DL and UL TBF progress : introduction
TBF establishmentTBF statistics : duration, number, throughpu
time
TBF release
DL TBF : delayed DL TBF release
TBF resources re-allocation
Triggers T1, T2, T3,T4
Number of candidate TBF
Number of successes and success rate
Failures : congestion, radio, BSS,
external request
Overall
presentation
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OMC-R QoS indicators - Radio interfaceDL and UL TBF progress
> DL and UL TBF progress : indicators = f(counters)
TBF statisticsDownlink Uplink
Average TBF duration (P16 / 10) / (P90a + P90b + P90c+ P90d + P90e + P90f)
Average TBF duration (P29/ 10) / (P30a + P30b + P30c)
Maximum number of TBFsimultaneously established
p35 Maximum number of TBFsimultaneously established
p39
Average number of TBFsimultaneously established
p36 / 10 Average number of TBFsimultaneously established
p40 / 10
Average useful throughputin kbit/s at RLC level perTBF
(P55a * N1 + P55b * N2) /((P16a/10) * 1000)
Average useful throughputin kbit/s at RLC level perTBF
(P57a * N1 + P57b * N2) /((P29/10) * 1000)
TBF
follow-up
B7
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> DL and UL TBF progress : indicators = f(counters)
OMC-R QoS indicators - Radio interfaceDL and UL TBF progress
TBF
follow-up
B7/B8
TBF statistics
Downlink Uplink
Average GPRS TBF
duration in ack mode
(P52a / 10) / (P90a + P90b +
P90c + P90d + P90e + P90f)
Average TBF duration (P29a / 10) / (P30a + P30b +
P30c)
Average EGPRS TBF
duration in ack mode
(P52c / 10) / (P90a + P90b +
P90c + P90d + P90e + P90f)
Average TBF duration (P29c / 10) / (P30a + P30b +
P30c)
Maximum number of TBF
simultaneously established
p35 Maximum number of TBF
simultaneously established
p39
Average number of TBF
simultaneously established
p36 / 10 Average number of TBF
simultaneously established
p40 / 10
Average useful throughput
in kbit/s at RLC level per
GPRS TBF
(P55a * N1 + P55b * N2 + P55c
* N3 + P55d * N4) / ((P16a/10) *
1000)
Average useful throughput
in kbit/s at RLC level per
GPRS TBF
(P57a * N1 + P57b * N2 + P55c
* N3 + P55d * N4) / ((P29a/10) *
1000)
Average useful throughput
in kbit/s at RLC level per
EGPRS TBF
(P55e*176 + P55f*224 +
P55g*296 + P55h*352 +
P55i*448 + P55j*592 +
(P55k*896 + P55l*1088 +
P55m*1184)/2) / (P38c*1000)
Average useful throughput
in kbit/s at RLC level per
EGPRS TBF
(P57e*176+ P57f*224 +
P57g*296 + P57h*352) /
(P38c*1000)
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OMC-R QoS indicators - Radio interfaceDL and UL TBF progress
> DL and UL TBF progress : indicators = f(counters)Delayed DL TBF release
Cumulated time of active DL TBF connections
(not available in B8)
P16a / 10
Cumulated time of active DL GPRS TBF
connections
P52a
Cumulated time of active DL EGPRS TBF
connections
P52c
Percentage of time during which the DL TBF
connections are in the active state (B7
indicator)
P16a / P16
Percentage of time during which the DL
TBF connections are in the active state
P52a / P16
Percentage of time during which the DL
TBF connections are in the active state
P52c / P16
Number of DL TBF transfer resumptions in
delayed release state
P422
Rate of DL TBF transfer resumptions per
established DL TBF
P422 / (P90a + P90b + P90c + P90d + P90e + P90f)
Number of DL RLC blocks containing only
dummy LLC UI Command PDU on PDTCH
P421
Number of DL RLC blocks sent on PDTCH
(B7 indicator)
P20a + P20b + P72a + P72b + P55a + P55b + P421
Rate of RLC blocks containing only dummy
LLC UI commands on DL PDTCH (B7
indicator)
P421 / (P20a + P20b + P72a + P72b + P55a + P55b +
P421)
Load rate induced by DL RLC blocks
containing dummy LLC PDU (B7 indicator)
P421 / (12 * (P38/10) * (1/0.240))
TBF
follow-up
B7/B8
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OMC-R QoS indicators - Radio interfaceDL and UL TBF progress
Detailed throughputs on Downlink
0
1
2
3
4
5
6
7
8
14/08/200
3
16/08/200
3
18/08/200
3
20/08/200
3
22/08/200
3
24/08/200
3
26/08/200
3
28/08/200
3
30/08/200
3
01/09/200
3
03/09/200
3
05/09/200
3
07/09/200
3
09/09/200
3
11/09/200
3
13/09/200
3
kbit/s per TBF
kbit/s per
PDCHkbit/s per cell
Detailed throughputs on uplink
0
24
6
8
10
12
14/08/200
3
16/08/200
3
18/08/200
3
20/08/200
3
22/08/200
3
24/08/200
3
26/08/200
3
28/08/200
3
30/08/200
3
01/09/200
3
03/09/200
3
05/09/200
3
07/09/200
3
09/09/200
3
11/09/200
3
13/09/200
3
kbit/s per TBF
kbit/s perPDCH
kbit/s per cell
RNO
reports
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OMC-R QoS indicators - Radio interfaceDL and UL TBF progress
DL TBF state
05000
100001500020000250003000035000400004500050000
14/08
/200
3
16/08
/200
3
18/08
/200
3
20/08
/200
3
22/08
/200
3
24/08
/200
3
26/08
/200
3
28/08
/200
3
30/08
/200
3
01/09
/200
3
03/09
/200
3
05/09
/200
3
07/09
/200
3
09/09
/200
3
11/09
/200
3
13/09
/200
3
0
10
20
30
40
50
60
70
80Delay-
>ActiveSuccess
% Efficiency
% Active
> On RNO graphs :
% Efficiency = Rate of DL TBF resumptions per DL TBF
establishments % Active = Percentage of time during which the DL TBF
connections are in the active state
RNO
reports
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OMC-R QoS indicators - Radio interfaceDL and UL TBF progress
> TBF resource re-allocation for each trigger
time
Preparation of the
resource reallocation
Failures cause : no PDCH can be found
Execution of the
resource reallocationFailures causes
Nb of TBF candidate resource reallocation
Drop cause
Radio problems
Preparation efficiency rate
External requests
BSS problems
Drop cause
Execution efficiency rate
Nb of TBF resource reallocation successes
Ratio of triggers
Success rate
TBF
resource
reallocation
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OMC-R QoS indicators - Radio interfaceDL and UL TBF progress
> DL and UL TBF progress : indicators = f(counters)TBF resources re-allocation : trigger T1Downlink Uplink
Nb of TBF candidate for resource realloc P403a Nb of TBF candidate for resource realloc P404a
Resource realloc ratio due to trigger T1 P403a / (P403a + P403b +P403c + P403d)
Resource realloc ratio due to trigger T1 P404a / (P404a + P404b +P404c + P404d)
Nb of resource realloc successes P405a Nb of resource realloc successes P406a
Resource realloc success rate P405a / P403a Resource realloc success rate P406a / P404a
Nb of resource realloc exec fail due to
radio problems
P407a Nb of resource realloc exec fail due to
radio problems
P408a
Resource realloc exec fail rate due to radioproblems
P407a / P403a Resource realloc exec fail rate due to radioproblems
P408a / P404a
Nb of resource realloc preparation failures
because no PDCH could be found
P423a Nb of resource realloc preparation failures
because no PDCH could be found
P424a
Resource realloc preparation fail rate due
to lack of radio resources
P423a / P403a Resource realloc preparation fail rate due
to lack of radio resources
P424a / P404a
Resource realloc prep efficiency rate (P403a - P423a) / P403a Resource realloc prep efficiency rate (P404a - P424a) / P404a
Nb of resource realloc failures due external
request (suspension request or Flush
message) during exec of the realloc
procedure
P425a Nb of resource realloc failures due external
request (suspension request or Flush
message) during exec of the realloc
procedure
P426a
Nb of resource realloc failures due to BSS
pb during exec of the realloc procedure
P403a - P423a - P425a -
P407a - P405a
Nb of resource realloc failures due to BSS
pb during exec of the realloc procedure
P404a - P424a - P426a -
P408a - P406a
Exec fail rate due to BSS pb (P403a - P423a - P425a -
P407a - P405a) / P403a
Exec fail rate due to BSS pb (P404a - P424a - P426a -
P408a - P406a) / P404a
Resource realloc exec efficiency rate P405a / (P403a - P423a) Resource realloc exec efficiency rate P406a / (P404a - P424a)
Trigger T1
B7 / B8
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OMC-R QoS indicators - Radio interfaceDL and UL TBF progress
> DL and UL TBF progress : indicators = f(counters)TBF resources re-allocation : trigger T2
Downlink Uplink
Nb of TBF candidate for resource realloc P403b Nb of TBF candidate for resource realloc P404b
Resource realloc ratio due to trigger T1 P403b/ (P403a + P403b +
P403c + P403d)
Resource realloc ratio due to trigger T1 P404b / (P404a + P404b +
P404c + P404d)
Nb of resource realloc successes P405b Nb of resource realloc successes P406b
Resource realloc success rate P405b / P403b Resource realloc success rate P406b / P404b
Nb of resource realloc exec fail due toradio problems P407b Nb of resource realloc exec fail due toradio problems P408b
Resource realloc exec fail rate due to radio
problems
P407b / P403b Resource realloc exec fail rate due to radio
problems
P408b / P404b
Nb of resource realloc preparation failures
because no PDCH could be found
P423b Nb of resource realloc preparation failures
because no PDCH could be found
P424b
Resource realloc preparation fail rate due
to lack of radio resources
P423b / P403b Resource realloc preparation fail rate due
to lack of radio resources
P424b / P404b
Resource realloc prep efficiency rate (P403b - P423b) / P403b Resource realloc prep efficiency rate (P404b - P424b) / P404b
Nb of resource realloc failures due external
request (suspension request or Flushmessage) during exec of the realloc
procedure
P425b Nb of resource realloc failures due external
request (suspension request or Flushmessage) during exec of the realloc
procedure
P426b
Nb of resource realloc failures due to BSS
pb during exec of the realloc procedure
P403b - P423b - P425b -
P407b - P405b
Nb of resource realloc failures due to BSS
pb during exec of the realloc procedure
P404b - P424b - P426b -
P408b - P406b
Exec fail rate due to BSS pb (P403b - P423b - P425b -
P407b - P405b) / P403b
Exec fail rate due to BSS pb (P404b - P424b - P426b -
P408b - P406b) / P404b
Resource realloc exec efficiency rate P405b / (P403b - P423b) Resource realloc exec efficiency rate P406b / (P404b - P424b)
Trigger T2
B7 / B8
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OMC-R QoS indicators - Radio interfaceDL and UL TBF progress
> DL and UL TBF progress : indicators = f(counters)TBF resources re-allocation : trigger T3
Downlink Uplink
Nb of TBF candidate for resource realloc P403c Nb of TBF candidate for resource realloc P404c
Resource realloc ratio due to trigger T1 P403c / (P403a + P403b +
P403c + P403d)
Resource realloc ratio due to trigger T1 P404c / (P404a + P404b +
P404c + P404d)
Nb of resource realloc successes P405c Nb of resource realloc successes P406c
Resource realloc success rate P405c / P403c Resource realloc success rate P406c / P404c
Nb of resource realloc exec fail due toradio problems
P407c Nb of resource realloc exec fail due toradio problems
P408c
Resource realloc exec fail rate due to radio
problems
P407c / P403c Resource realloc exec fail rate due to radio
problems
P408c / P404c
Nb of resource realloc preparation failures
because no PDCH could be found
P423c Nb of resource realloc preparation failures
because no PDCH could be found
P424c
Resource realloc preparation fail rate due
to lack of radio resources
P423c / P403c Resource realloc preparation fail rate due
to lack of radio resources
P424c / P404c
Resource realloc prep efficiency rate (P403c - P423c) / P403c Resource realloc prep efficiency rate (P404c - P424c) / P404c
Nb of resource realloc failures due external
request (suspension request or Flushmessage) during exec of the realloc
procedure
P425c Nb of resource realloc failures due external
request (suspension request or Flushmessage) during exec of the realloc
procedure
P426c
Nb of resource realloc failures due to BSS
pb during exec of the realloc procedure
P403c - P423c - P425c -
P407c - P405c
Nb of resource realloc failures due to BSS
pb during exec of the realloc procedure
P404c - P424c - P426c -
P408c - P406c
Exec fail rate due to BSS pb (P403c - P423c - P425c -
P407c - P405c) / P403c
Exec fail rate due to BSS pb (P404c - P424c - P426c -
P408c - P406c) / P404c
Resource realloc exec efficiency rate P405c / (P403c - P423c) Resource realloc exec efficiency rate P406c / (P404c - P424c)
Trigger T3
B7 / B8
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OMC-R QoS indicators - Radio interfaceDL and UL TBF progress
Trigger T4
B8
> DL and UL TBF progress : indicators = f(counters)TBF resources re-allocation : trigger T4
Downlink Uplink
Nb of TBF candidate for resource realloc P403d Nb of TBF candidate for resource realloc P404d
Resource realloc ratio due to trigger T4 P403d / (P403a + P403b +P403c +P403d)
Resource realloc ratio due to trigger T4 P404d / (P404a + P404b +P404c + P404d)
Nb of resource realloc successes P405d Nb of resource realloc successes P406d
Resource realloc success rate P405d / P403d Resource realloc success rate P406d / P404d
Nb of resource realloc exec fail due to
radio problems
P407d Nb of resource realloc exec fail due to
radio problems
P408d
Resource realloc exec fail rate due to radio
problems
P407d / P403d Resource realloc exec fail rate due to radio
problems
P408d / P404d
Nb of resource realloc preparation failures
because no PDCH could be found
P423d Nb of resource realloc preparation failures
because no PDCH could be found
P424d
Resource realloc preparation fail rate due
to lack of radio resources
P423d / P403d Resource realloc preparation fail rate due
to lack of radio resources
P424d / P404d
Resource realloc prep efficiency rate (P403d - P423d) / P403d Resource realloc prep efficiency rate (P404d - P424d) / P404d
Nb of resource realloc failures due external
request (suspension request or Flush
message) during exec of the reallocprocedure
P425d Nb of resource realloc failures due external
request (suspension request or Flush
message) during exec of the reallocprocedure
P426d
Nb of resource realloc failures due to BSS
pb during exec of the realloc procedure
P403d - P423d - P425d -
P407d - P405d
Nb of resource realloc failures due to BSS
pb during exec of the realloc procedure
P404d - P424d - P426d -
P408d - P406d
Exec fail rate due to BSS pb (P403d - P423d - P425d -
P407d - P405d) / P403d
Exec fail rate due to BSS pb (P404d - P424d - P426d -
P408d - P406d) / P404d
Resource realloc exec efficiency rate P405d / (P403d - P423d) Resource realloc exec efficiency rate P406d / (P404d - P424d)
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OMC-R QoS indicators - Radio interfaceDL and UL TBF progress
> Distribution of triggers and total success rate :
DL ressource realloc
0
20000
40000
60000
80000
100000
120000
140000
160000
180000
01/09/2003 02/09/2003 03/09/2003 04/09/2003 05/09/2003 06/09/2003 07/09/2003
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
T3 RequestT2 Request
T1 Request
% Success
RNO V3
reports
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OMC-R QoS indicators - Radio interfaceDL and UL TBF progress
DL ressource realloc T1
0
5
10
15
20
25
01/09/2003 02/09/2003 03/09/2003 04/09/2003 05/09/2003 06/09/2003 07/09/2003
80
82
84
86
88
90
92
94
96
98
100
102
External stop
Fail radio
Fail BSS
Prep fail
Success
% Success
DL ressource realloc T2
0
10000
20000
30000
40000
50000
60000
70000
01/09/2003 02/09/2003 03/09/2003 04/09/2003 05/09/2003 06/09/2003 07/09/2003
0
0.2
0.4
0.6
0.8
1
1.2
1.4
External stop
Radio fail
BSS fail
Prep fail
Success
% Success
DL ressource realloc T3
0
10000
20000
30000
40000
50000
60000
70000
80000
90000
100000
01/09/2003 02/09/2003 03/09/2003 04/09/2003 05/09/2003 06/09/2003 07/09/2003
0
1
2
3
4
5
6
7
8
External stop
Radio fail
BSS fail
Prep fail
Success
% Success
RNO V3
reports
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OMC-R QoS indicators - Radio interfaceDL and UL TBF : RLC statistics
> DL and UL TBF : RLC statistics : introductionPDTCH
RLC blocks
PACCH
RLC blocks
Number useful, re-transmitted, lost blocks
for GPRS CS1,2,3,4
Retransmission rate, lost rate
Throughput per cell, per PDCH, per TBF
PDTCH occupancy
Useful CSx and MCSx distribution
PACCH occupancy
Coding Scheme transitionsCS1->CS2
CS2 -> CS1
LT
STGPRS Coding Scheme
increase and decrease
Overall
description
B7 / B8
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OMC-R QoS indicators - Radio interfaceDL and UL TBF : RLC statistics
>DL and UL TBF : RLC statistics : indicators = f(counters)
KPI
KPI
RLC statistics
Downlink Uplink
Number of usefulPDTCH RLC blocks
CS1 : P55aCS2 : P55bCS3 : P55cCS4 : P55e
Number of usefulPDTCH RLC
CS1 : P57aCS2 : P57bCS3 : P57cCS4 : P57e
Number of
retransmitted PDTCH
RLC blocks inAcknowledged mode
CS1 : P20a
CS2 : P20b
CS3 : P20cCS4 : P20d
Number ofretransmitted PDTCH
RLC blocks inAcknowledged mode
CS1 : P21a
CS2 : P21b
CS3 : P20cCS4 : P20d
Number of lost PDTCHRLC blocks in CS1 and
CS2Unacknowledged mode
CS1 : P72aCS2 : P72b
CS3 : P72cCS4 : P72d
Number of lost PDTCHRLC blocks in CS1 and
CS2Unacknowledged mode
CS1 : P73aCS2 : P73b
CS3 : P73cCS4 : P73d
PDTCH RLC block
retransmission rate(P20a + P20b + P20c+ P20d) / (P55a +P55b + P55c + P55d+ P20a + P20b +P20c + P20d)
PDTCH RLC block
retransmission rate(P21a + P21b + P21c+ P21d) / (P57a +P57b + P57c + P57d+ P21a + P21b +P21c + P21d)
PDTCH RLC block
CS2 / (CS1 + CS2)
ratio
(P20b + P55b + P72b) /(P20a + P55a + P72a +
P20b + P55b + P72b)
PDTCH RLC block
CS2 / (CS1 + CS2)
ratio
(P21b + P57b + P73b) /(P21a + P57a + P73a +
P21b + P57b + P73b)
GPRS
RLC traffic
B7/B8
GPRS
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OMC-R QoS indicators - Radio interfaceDL and UL TBF : RLC statistics
> DL and UL TBF : RLC statistics : indicators = f(counters)
RLC statistics
Maximum number ofuseful PDTCH RLC
blocks in CS1 and CS2
CS1 : P56aCS2 : P56b
Maximum number ofuseful PDTCH RLC
blocks in CS1 and CS2
CS1 : P58aCS2 : P58b
CS1 peak usefulthroughput in kbit/s atRLC level
(P56a * N1) / (gp *1000)
CS1 peak usefulthroughput in kbit/s atRLC level
(P58a * N1) / (gp *1000)
CS2 peak useful
throughput in kbit/s atRLC level
(P56b * N2) / (gp *
1000)
CS2 peak useful
throughput in kbit/s atRLC level
(P58b * N2) / (gp *
1000)
Average usefulthroughput in kbit/s atRLC level per PDCH
(P55a*N1 + P55b*N2)/ ((P38/10) * 1000)
Average usefulthroughput in kbit/s atRLC level per PDCH
(P57a * N1 + P57b *N2) / ((P38/10) * 1000)
Average usefulthroughput in kbit/s atRLC level per cell
((P55a * N1 + P55b *N2) * (P149/10)) /((P38/10) * 1000)
Average usefulthroughput in kbit/s atRLC level per cell
((P57a * N1 + P57b *N2) * (P149/10)) /((P38/10) * 1000)
PACCH occupancy P59 / (12 *((P38/10)*(1/0.240))
PACCH occupancy P60 / (12 *((P38/10)*(1/0.240))
PDTCH occupancy (P20a + P20b + P55a +P55b + P72a + P72b +P421) / (12*(P38/10)*(1/0.240))
PDTCH occupancy (P21a + P21b + P57a +P57b + P73a + P73b) /(12*(P38/10)*(1/0.240))
AverageTX_EFFICIENCY
P336 AverageTX_EFFICIENCY
P335
GPRS
RLC traffic
B7
GPRS
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OMC-R QoS indicators - Radio interfaceDL and UL TBF : RLC statistics
> DL and UL TBF : RLC statistics : indicators = f(counters)Coding scheme adaptation
Downlink Uplink
Coding Schemeadaptation from CS1 toCS2 (long term)
P355a Coding Schemeadaptation from CS1 toCS2 (long term)
P356a
Coding Schemeadaptation from CS2 toCS1 (short term)
P353a Coding Schemeadaptation from CS2 toCS1 (short term)
P354a
Coding Schemeadaptation from CS2 toCS1 (long term)
P357a Coding Schemeadaptation from CS2 toCS1 (long term)
P358a
Ratio of coding schemeadaptation from CS2 toCS1 over all codingscheme adpatations
(P353a + P357a) /(P353a + P357a +P355a)
Ratio of coding schemeadaptation from CS2 toCS1 over all codingscheme adpatations
(P354a + P358a) /(P354a + P358a +P356a)
Ratio of short termcoding schemeadaptation from CS2 to
CS1 over all codingscheme adpatationsfrom CS2 to CS1
P353a / (P353a +P357a)
Ratio of short termcoding schemeadaptation from CS2 to
CS1 over all codingscheme adpatationsfrom CS2 to CS1
P354a / (P354a +P358a)
GPRS
RLC traffic
B7 (only)
RNO V3
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OMC-R QoS indicators - Radio interfaceDL and UL TBF : RLC statistics
Downlink Traffic Load
0
50000
100000
150000
200000
250000
300000
350000
400000
14/08/200
3
16/08/200
3
18/08/200
3
20/08/200
3
22/08/200
3
24/08/200
3
26/08/200
3
28/08/200
3
30/08/200
3
01/09/200
3
03/09/200
3
05/09/200
3
07/09/200
3
09/09/200
3
11/09/200
3
13/09/200
3
0
10
20
30
40
50
60
70
Blocks CS2
Blocks CS1
%io CS2
RLC Efficiency on downlink
0
50000
100000
150000
200000
250000
300000
350000
400000
14/08/200
3
16/08/200
3
18/08/200
3
20/08/200
3
22/08/200
3
24/08/200
3
26/08/200
3
28/08/200
3
30/08/200
3
01/09/200
3
03/09/200
3
05/09/200
3
07/09/200
3
09/09/200
3
11/09/200
3
13/09/200
3
0
0.5
1
1.5
2
2.5
CS2 useful
CS1 useful
% CS2retrans% CS1retrans
RNO V3
reports
RNO V3
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OMC-R QoS indicators - Radio interfaceDL and UL TBF : RLC statistics
Uplink Traffic Load
0
50000
100000
150000
200000
250000
14/08/200
3
16/08/200
3
18/08/200
3
20/08/200
3
22/08/200
3
24/08/200
3
26/08/200
3
28/08/200
3
30/08/200
3
01/09/200
3
03/09/200
3
05/09/200
3
07/09/200
3
09/09/200
3
11/09/200
3
13/09/200
3
0
510
152025
30
354045
Blocks CS2
Blocks CS1
%io CS2
RLC Efficiency on uplink
0
50000
100000
150000
200000
250000
14/08/200
3
16/08/200
3
18/08/200
3
20/08/200
3
22/08/200
3
24/08/200
3
26/08/200
3
28/08/200
3
30/08/200
3
01/09/200
3
03/09/200
3
05/09/200
3
07/09/200
3
09/09/200
3
11/09/200
3
13/09/200
3
0
0.5
1
1.5
2
2.5
CS2 useful
CS1 useful
% CS2retrans% CS1
retrans
RNO V3
reports
EGPRS
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OMC-R QoS indicators - Radio interfaceDL and UL TBF : RLC statistics
EGPRS
RLC traffic
B8
> DL and UL TBF : RLC statistics : indicators = f(counters)
RLC statistics
Downlink Uplink
Number of useful RLCblocks sent in RLCacknowledged mode onPDTCH encoded inMCS-1/2//9.
MCS1 : P55eMCS2 : P55f
MCS9 : P55m
Number of useful RLCblocks sent in RLCacknowledged mode onPDTCH encoded inMCS-1/2/3/4.
MCS1 : P57eMCS2 : P57fMCS3 : P57gMCS4 : P57h
MCSx, retransmitted
data bytes
P20e MCSx, retransmitted
data bytes
P21e
MCS-x lost bytes P72d MCS-x lost bytes P73d
In RLC ack mode,rate of RLCretransmitted data
bytes sent on PDTCHand encoded in CS-x
(P20a*160+P20b*240+P20c*288+P20d*400)/(P20a*160+P20b*240+P20c*288+P20d*400+P55a*160+P55b*240+P55c*288+P55d*400)
In RLC ack mode,rate of RLCretransmitted data
bytes sent on PDTCHand encoded in CS-x
(P21a*160+P21b*240+P21c*288+P21d*400)/(P21a*160+P21b*240+P21c*288+P21d*400+P57a*160+P57b*240+P57c*288+P57d*400)
In RLC ack mode,
rate of RLCretransmitted databytes sent on PDTCHand encoded in MCS-x
P20e/(P20e+(P55e*176+P55f*224+P55g*296+P55h*352+P55i*448+P55j*592+(P55k*896+P55l*1088+P55m*1184)/2)/ 8))
In RLC ack mode,
rate of RLCretransmitted databytes sent on PDTCHand encoded in MCS-x
(p21e) / ((p21e)+( ((P57e)*176+(P57f)*224+(P57g)*296+(P57h)*352) / 8))
EGPRS
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Coding scheme adaptation
Downlink Uplink
Number of CSadaptions from a givencoding scheme to a lessrobust coding scheme.Does not apply to
EGPRS TBFs
P351a Number of CSadaptions from a givencoding scheme to a lessrobust coding scheme.Does not apply to
EGPRS TBFs
P352a
Number of CSadaptions from a givencoding scheme to amore robust coding
scheme. Does not applyto EGPRS TBFs
P351b Number of CSadaptions from a givencoding scheme to amore robust coding
scheme. Does not applyto EGPRS TBFs
P352b
Average number of CSincrease per TBF
P351a / (P90a + P90b +P90c + P90d + P90e +
P90f)
Average number of CSincrease per TBF
P352a / (P30a + P30b +P30c)
Average number of CSadaptions decrease perTBF
P351b/ (P90a + P90b +P90c + P90d + P90e +P90f)
Average number of CSadaptions decrease perTBF
P352b / (P30a + P30b +P30c)
> DL and UL TBF : RLC statistics : indicators = f(counters)
EGPRS
RLC traffic
B8OMC-R QoS indicators - Radio interfaceDL and UL TBF : RLC statistics
Overall
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OMC-R QoS indicators - Radio interfaceSessions and transfers
> Sessions and transfers : introduction
Session
Transfer
Number of sessions
Average duration
Cumulative time MS engaged in DL/UL biased transfers
% of time DL/UL TBF are granted the max nb of PDCH they suppo
and the corresponding MS are engaged in DL/UL biased transfers
Average number of DL/UL TBF per session
Overall
description
B7 / B8
GPRS/EGPRS
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OMC-R QoS indicators - Radio interfaceSessions and transfers
> Sessions and transfers : indicators = f(counters)
GPRS sessions
Number of GPRS sessions P413
Average duration of a session ((P419 + P420) / 10) / P413
Downlink Uplink
Average number of
DL TBF establishedper session
(P90a +P90b + P90c +
P90d + P90e + P90f) /P413
Average number of
UL TBF establishedper session
(P30a + P30b +P30c) /
P413
sessions
B7/B8
Session : a session corresponds to a mobile station and the BSS
exchanging packet data using downlink TBFs, uplink TBFs or both
Bias : For each MS, the MFS counts the number of bytes exchanged
in each direction and then determines the main direction of the application
EGPRS
GPRS/EGPRS
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OMC-R QoS indicators - Radio interfaceSessions and transfers
> Sessions and transfers : indicators = f(counters)Bias of the ongoing transfers
Downlink Uplink
Cumulative time MS
are engaged in DL
biased transfers
P419 / 10 Cumulative time MS
are engaged in UL
biased transfers
P420 / 10
Donwlink biaised ratio P419 / (P419 + P420) Uplink biaised ratio P420 / (P419 + P420)
Cumulative time MS
are served by DL TBFand engaged in DL
biased transfers
P411/10 Cumulative time MS
are served by UL TBFand engaged in UL
biased transfers
P412/10
Cumulative time DL
TBF are granted the
maximum number of
PDCH they support and
the corresponding MS
are engaged in DL
biased transfers
P409/10 Cumulative time UL
TBF are granted the
maximum number of
PDCH they support and
the corresponding MS
are engaged in UL
biased transfers
P410/10
% of time DL TBF aregranted the maximum
number of PDCH they
support and the
corresponding MS are
engaged in DL biased
transfers
P409 / P411 % of time UL TBF aregranted the maximum
number of PDCH they
support and the
corresponding MS are
engaged in UL biased
transfers
P410 / P412
EGPRS
RLC traffic
B8
sessions
B7/B8
RNO
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OMC-R QoS indicators - Radio interfaceSessions and transfers
DL session
0
50000
100000
150000
200000
250000
14/08/200
3
16/08/200
3
18/08/200
3
20/08/200
3
22/08/200
3
24/08/200
3
26/08/200
3
28/08/200
3
30/08/200
3
01/09/200
3
03/09/200
3
05/09/200
3
07/09/200
3
09/09/200
3
11/09/200
3
13/09/200
3
86
88
90
92
94
96
98
100
102
Time Opt alloc
DL Time bias
Time bias
%Time Opt
Alloc
UL session
0
1000
2000
3000
4000
5000
6000
14/08/200
3
16/08/200
3
18/08/200
3
20/08/200
3
22/08/200
3
24/08/200
3
26/08/200
3
28/08/200
3
30/08/200
3
01/09/200
3
03/09/200
3
05/09/200
3
07/09/200
3
09/09/200
3
11/09/200
3
13/09/200
3
0
20
40
60
80
100
120
Time Opt alloc
UL Time bias
Time bias
%Time Opt
Alloc
Reports
Overall
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OMC-R QoS indicators - Radio interfaceGPRS radio resources : PDCH
> GPRS radio resources = PDCH : introduction
PDCH usageAverage , max, min number of established PDCH
Cumulative time PDCH :
- allocated
- allocated with EGPRS traffic
- degraded
Smooth PDCH adaptation to cell load variation
EN_DYN_PDCH_ADAPTATION = enable
MAX_PDCH_DYN
variable follow-up
PDCH dynamic establishment success rate
% time during which the cell is in high load situation
Soft pre-emption
Overall
description
B7 / B8
PDCH
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OMC-R QoS indicators - Radio interfaceGPRS radio resources : PDCH
> GPRS radio resources = PDCH : indicators = f(counters)
Soft pre-emption
Number of PDCH released after having been
marked by the soft pre-emption procedure
P417
Number of times the soft pre-emption procedure
is called
P418
Average number of UL+DL TBF candidates to a
T1 reallocation per PDCH released after havingbeen marked
(P403a + P404a) / P417
PDCH usageAverage number of established PDCH in the cell (not in B8) P149 / 10
Maximum number of established PDCH in the cell (not in B8) P150
Maximum number of established PDCH in the cell P150b
Minimum number of established PDCH in the cell(not in B8) P427
Minimum number of established PDCH in the cell P150c
Cumulated time during which the PDCH are established for the cell P38 / 10
Cumulated time during which the PDCH is used for data traffic P38b / 10
Cumulated time during which the PDCH is used for EGPRS datatraffic
P38c / 10
Cumulated time during which the PDCH is degraded P38c / 10
PDCH dynamic establishment success rate P19 / P54
% of time during which the cell is in high load situation (P1 / 10) / GP
PDCH
usage
B7 / B8
MAX PDCH Dyn
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OMC-R QoS indicators - Radio interfaceGPRS radio resources : PDCH
> GPRS radio resources = PDCH : indicators = f(counters)
MIN_PDCH
MAX_PDCH_HIGH_LOAD
MAX_PDCH_DYN
MAX_PDCH
number of timeslots in the cell
MAX_PDCH_DYN variable follow-up
MAX_PDCH_DYN value integrated over time P414 / 10
Average value of MAX_PDCH_DYN (P414 / 10) / GP
Maximum value of MAX_PDCH_DYN P415
Minimum value of MAX_PDCH_DYN P416
MAX_PDCH_DYN maximum range P415 - P416MAX_PDCH_DYN reduction rate (PERIOD*(MAX_PDCH - P414/10)) /(PERIOD*MAX_PDCH)
MAX_PDCH_Dyn
follow-up
B7 / B8
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OMC-R QoS indicators - Radio interfaceGPRS radio resources : PDCH
PDCH dynamic allocation load report
012
3456
789
14/08/200
3
16/08/200
3
18/08/200
3
20/08/200
3
22/08/200
3
24/08/200
3
26/08/200
3
28/08/200
3
30/08/200
3
01/09/200
3
03/09/200
3
05/09/200
3
07/09/200
3
09/09/200
3
11/09/200
3
13/09/200
3
00.10.20.30.40.50.60.70.80.91
Alloc max
% BSC High
load
Dyn dealloc procedure
0
1
2
3
4
5
6
14/08/200
3
16/08/200
3
18/08/200
3
20/08/200
3
22/08/200
3
24/08/200
3
26/08/200
3
28/08/200
3
30/08/200
3
01/09/200
3
03/09/200
3
05/09/200
3
07/09/200
3
09/09/200
3
11/09/200
3
13/09/200
3
0
510
15
20
25
30
35
T1 Success
RR Soft
preempt
% Reduction
MPDCH
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OMC-R QoS indicators - Radio interfaceGPRS radio resources : PDCH
> GPRS radio resources = MPDCH : introduction
MPDCH usage
MPDCH signalling traffic
Average, max number of established MPDCH (prim + sec)
Cumulative establishment time (primary)
MPDCH establishment requests (primary)MPDCH alloc and de-alloc requests (secondary)
Time during which a MPDCH cannot be established
(prim + sec)
PPCHPRACH
PACCH
PAGCH
Overall
description
MPDCH
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OMC-R QoS indicators - Radio interfaceGPRS radio resources : MPDCH
> GPRS radio resources = MPDCH : indicators = f(counters)
MPDCH allocation
Average number of established MPDCH (primary and secondary) P93 / 10
Maximum number of established MPDCH (primary and secondary) P94
Cumulative time during which primary MPDCH is established P37 / 10Primary MPDCH time occupancy ((P37 / 10)* 60) / GP
Number of primary MPDCH establishment requests P51a
Number of secondary MPDCH dynamic allocation and deallocation requests P51b
Time during which a primary MPDCH cannot be established P395a / 10
% of time during which a primary MPDCH cannot be established (P395a / 10) / GP
Time during which a secondary MPDCH cannot be established P395b / 10
% of time during which a secondary MPDCH cannot be established (P395b / 10) / GP
MPDCH
allocation
B7 (only)
MPDCH
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OMC-R QoS indicators - Radio interfaceGPRS radio resources : MPDCH
> GPRS radio resources = MPDCH : indicators = f(counters)
MPDCH signalling traffic
Dedicated PPCH signalling load on all the existing MPDCH P61
Number of PACKET PAGING REQUEST for PS paging sent
to the MS on PPCH
P61a
Number of PACKET PAGING REQUEST for CS paging sent
to the MS on PPCH
P61b
Number of Packet DL assignment messages on PPCH P61 - 0.5*P61a - 0.5*P61bOccupancy rate of PS paging messages on PPCH load 0.5 * P61a / P61
Occupancy rate of Packet DL assignment messages on PPCH (P61 - 0.5*P61a - 0.5*P61b) / P61
PRACH signalling load on all the existing MPDCH P399
PRACH signalling load due to NC2 feature P438d
Dedicated PAGCH signalling load on all the existing MPDCH P400
UL PACCH signalling load on all the existing MPDCH P401
MPDCH
signaling traffic
B7/B8
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OMC-R QoS indicators - Radio interface
> GPRS service and CCCH load : introduction
CCCH load RACH
PCH : PS paging, CS paging, Immediate assignment
AGCH
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OMC-R QoS indicators - Radio interfaceGPRS service and CCCH load
> GPRS service and CCCH load : indicators = f(counters)
CCCH load
Paging usage rate due to GPRS P53a / MC8A
PCH use due to GPRS Immediat Assignment P53c
Ratio PS/CS paging through SGSN P53a / (P53a+P53b)
RACH usage rate due to GPRS P62c / MC8CAGCH usage rate due to GPRS (P49 + P27) / (MC8B + P49 + P27)
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OMC-R QoS indicators - Radio interfaceGPRS service and CCCH load
GPRS/GSM AGCH breakdown
050000
100000
150000
200000250000300000
350000400000450000
14/08/200
3
16/08/200
3
18/08/200
3
20/08/200
3
22/08/200
3
24/08/200
3
26/08/200
3
28/08/200
3
30/08/200
3
01/09/200
3
03/09/200
3
05/09/200
3
07/09/200
3
09/09/200
3
11/09/200
3
13/09/200
3
00.51
1.5
22.53
3.544.5
PS AGCH
Tot AGCH
% PS AGCH
GPRS/GSM RACH breakdown
050000
100000
150000200000
250000300000
350000400000450000
14/08/20
03
16/08/20
03
18/08/20
03
20/08/20
03
22/08/20
03
24/08/20
03
26/08/20
03
28/08/20
03
30/08/20
03
01/09/20
03
03/09/20
03
05/09/20
03
07/09/20
03
09/09/20
03
11/09/20
03
13/09/20
03
0
0.5
1
1.5
2
2.5
3
3.54
Tot RACH
% PS RACH
GPRS/GSM PCH breakdown
02000000400000060000008000000
100000001200000014000000160000001800000020000000
14/08/200
3
16/08/200
3
18/08/200
3
20/08/200
3
22/08/200
3
24/08/200
3
26/08/200
3
28/08/200
3
30/08/200
3
01/09/200
3
03/09/200
3
05/09/200
3
07/09/200
3
09/09/200
3
11/09/200
3
13/09/200
3
00.10.20.30.40.50.60.70.80.91
CS PAging
PS Imm. As
PS PAging
%io PS Pag
CS AGCH
Overall
d i i
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OMC-R QoS indicatorsGPU object
> GPU object : introduction
GPU counters Overall traffic
MS capabilities breakdown
Processing limitation, GCH interface
description
B7/B8
GPU traffic
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GPU traffic
Number of LLC PDU transferred (UL+ DL) P104
Number of UL+DL TBF establishment requests
per GPU
P107
Number of UL+DL TBF establishment successes
per GPU
P106
Number of PS PAGING request per GPU P391a
Number of CS PAGING request per GPU P391b
MS capabilities
Number of MS contexts created for Releases1997 or 1998 mobile stations.
P450a
Number of MS contexts created for non-EGPRScapable Release 1999 onwards mobile stations
P450b
Number of MS contexts created for EGPRScapable Release 1999 onwards mobile stations.
450c
Ratio of MS contexts created for Releases 1997or 1998 mobile stations.
P450a / ( P450a+P450b+P450c)
Ratio of MS contexts created for non-EGPRScapable Release 1999 onwards mobile stations
P450b / ( P450a+P450b+P450c)
Ratio of MS contexts created for EGPRS capableRelease 1999 onwards mobile stations.
P450c / ( P450a+P450b+P450c)
OMC-R QoS indicatorsGPU object
> GPU object : traffic follow-up
GPU traffic
B7/B8
GPU
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OMC-R QoS indicatorsGPU object
G U
processing
& Ater interface
> GPU object : processing and GCH interfaceGPU processing
DSP congestion duration (in seconds). P384
Percentage of time during which the DSP is incongestion
P384 / PERIOD
Cumulative time during which the GPU stays inthe PMU CPU overload state due to PMU CPU
power limitations.
450c
Percentage of time during which the GPU staysin the PMU CPU overload state due to PMU
CPU power limitations.
P450a / ( P450a+P450b+P450c)
Ater interface - GCH
DSP congestion duration (in seconds) (not B8). P100
Cumulative time (in seconds) during which a
GCH (16k channel) is busy in the GPU
P100a
Maximum number of busy GCH (16k channel) in
the GPU
P100b
Cumulative time (in seconds) during which a
GCH resource (16k channel) is available in the
GPU
P101
Atermux congestion duration (in seconds) due to
a lack of GCH transmission resources on the
Atermux interface
P383a
Time (cumulated over a granularity period)
during which the GPU remains in "high" Ater
usage
P383b
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OMC-R QoS indicators - Gb interface
> Gb interface indicators : BVC
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OMC-R QoS indicators - Gb interface
> BVC : introduction
BVC Number of DL LLC bytes
Number of UL LLC bytes
Received from SGSN
Discarded due to congestion
Discarded due to Suspend procedur
Received from MS
Rerouted
Not rerouted
Well received from SGSN
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OMC-R QoS indicators - Gb interface
> BVC : indicators = f(counters)BVC (cell)
Downlink Uplink
Number of DL LLCbytes received fromSGSN
P43 Number of UL LLCbytes received fromMS
P44
Number of DL LLCbytes discarded due to
congestion
P10
Average DL useful
throughput in kbit/s
((P43 - P10) * 8) / (GP
* 1000)DL LLC congestion
rate
P10 / P43
Number of DL LLC
bytes discarded due tosuspend procedure
P99
% of DL LLC bytesdiscarded due to
suspend procedure
P99 / P43
Downlink LLC bytes
well rerouted
P95
DL LLC bytes notrerouted
P96
DL LLC bytes wellreceived
P43 - P10 - P96
DL LLC bytes wellreceived rate
(P43 - P10 - P96) /P43
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OMC-R QoS indicators - Gb interface
Details of downlink LLC traffic
010000002000000
3000000400000050000006000000
700000080000009000000
14/08/20
03
16/08/20
03
18/08/20
03
20/08/20
03
22/08/20
03
24/08/20
03
26/08/20
03
28/08/20
03
30/08/20
03
01/09/20
03
03/09/20
03
05/09/20
03
07/09/20
03
09/09/20
03
11/09/20
03
13/09/20
03
98.498.698.8
9999.299.499.6
99.8100100.2 Blocked bytes
Discarded
bytesNot rerouted
Rerouted
bytesReceived
bytes%Well receiv
Details of uplink LLC traffic
0
5000001000000
1500000
2000000
2500000
3000000
3500000
4000000
14/08/200
3
16/08/200
3
18/08/200
3
20/08/200
3
22/08/200
3
24/08/200
3
26/08/200
3
28/08/200
3
30/08/200
3
01/09/200
3
03/09/200
3
05/09/200
3
07/09/200
3
09/09/200
3
11/09/200
3
13/09/200
3
UL sent bytes
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EDGE Demo telecom reports
> For the first EDGE experimentation some RNO reportsare available :
EDGE_trial_GPRS_Telecom
DL/UL TBF establishments
DL/UL data transfers Qos
DL/UL sessions
EDGE_trial_GPRS_ThroughputDL/UL GPRS throughput : cell,PDCH,TBF
DL/UL EGPRS throughput : PDCH, TBF
EDGE_trial_GPRS_global_rlc_traffic
EDGE_trial_GPRS_rlc_ack_traffic
DL/UL RLC traffic : CSx/MCSx usage...
DL/UL CS transitions (only for GPRS)
EDGE_trial_GPRS_dl_resource_reallocEDGE_trial_GPRS_ul_resource_realloc
DL/UL T1,T2,T3,T4 triggers
Request,success,prep fail...
EDGE_trial_GPRS_PDCH_dyn_alloc Allocation, de-allocation,PDCH usage
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Agenda
> OMC-R QoS indicators> End user QoS
> GPRS QoS follow-up method
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End user QoS
> Different data applications are multiplexed over the GPRSradio layers : FTP, WEB/HTTP, WAP, MMS,
> Data applications have very different traffic characteristics
(amount of data, duration between LLC PDU) leading todifferent ways of triggering of the radio layers algorithms
> This has a direct impact on the follow-up of some OMC-R QoSindicators :
number of DL/UL TBF establishment requests
DL/UL TBF duration
coding scheme distribution
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End user QoS
> Data applications use TCP/IP protocol layers which have agreat impact on the end user QoS
(*)
First IP router Last IP ro
GTP
relay
SNDCP
BSSGPRLC BSSGP
relay
relay
SNDCPPPP
FTP
TCP
IP
PPP
LLC
RLC
MAC
RF
MAC
RF
NS
L1
NS
L1
LLC UDP
IP-Gn
L2
L1
UDP
IP-Gn
L2
L1
IP
relay
IP
GTP
IP
relay
IP
relay
IP
UmR
Gb
Gn Gi
TE (PC,PDA )
MS
BSS
SGSN
GGSN
Possible repartition on the end to end path of the TCP flight size
TCP data segment
TCP acknowledgement
(*) this graphical representation is used toexpress the fact that many data segments arecurrently waiting to be transmitted on the
represented link and are stored in buffers of thedevice handling the link . It doesnt mean thatsimultaneous segments are being transmitted.
FTP above TCP/IP layers
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End user QoS
> Several upper layers parameters and algorithms have a greatimpact on the end user QoS :
MTU size at sender side
TCP window size at receiver side
TCP slow start algorithm at sender side
TCP algorithms to handle congestion situations
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End user QoS
> Example coming from the labs :
FTP download of a 1 MB file considering different MTU and TCPwindow size values
MS used : Sagem OT190 (3+1)Max. throughput obtained for a TCP
window size ~ 8*1460 bytes
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End user QoS
> Contrary to the CS service, the follow-up of radio layers QoSindicators (from drive tests or OMC-R) is not sufficient to havea complete status of the end user QoS
> Good QoS at radio layers level does not necessarily meangood end user QoS.
> Inversely, trying to improve QoS at end user side can haveside effect on QoS at radio layers.
Starting TBF in CS2 allows better throughput during FTP transferbut QoS at radio layers shows that it can degrade the DL TBFestablishment success rate.
Enabling delayed downlink TBF release allows better responsetime from mobiles but it leads to more risks to drop DL TBF.
Radio and End user QoS are both part of GPRS optimisation.
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End user QoS
> End user performances are obtained through different end user
services : Ping
FTP
WAP
WEB/HTTP
> These performances must be interpreted with a maximum ofinformation concerning the context of the measurements.
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End user QoS
> Ping Test results in two different European networks
First network : with Sagem OT190, local server, T3192 = 1 s. Testresults come from series of 300 pings with first ping not taken intoaccount
Second network : with Siemens S45, server not local, T3192 = 500ms. Test results come from series of 100 pings with first ping taken
into account For both : Ericsson core network
B7 iso B6 : w/o Non DRX mode
with Delayed emission of final PUAN
B7 Full : with Non-DRX modewith Delayed DL TBF release
with Delayed emission of final PUAN
Ping size Ping separation B7 iso B6 B7 full
First network 32 bytes 0 second 1045.44 698.62
32 bytes 3 second 1271.73 1240.53
1400 bytes 0 second 3944.14 3102.371400 bytes 3 second 3211.71 3030.93
Second network 32 bytes 0 second 2113.34 756.31
32 bytes 3 second 1245.39 956.16
1400 bytes 0 second 3523.45
1400 bytes 3 second 3102.86
Average Ping duration
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End user QoS
> FTP test results in European network :
Performed with Siemens S45 and Samsung Q100 and a local server
Motorola core network
PC with Windows 98 (MTU = 1500 bytes, TCP window size = 16384bytes) and with Windows 2000 (default TCP parameter values)
> Qualitative WAP test results in European network :
Performed with Motorola T280 / Ericsson core network
WAP access time reduced in B7 release from 10 seconds to lessthan 6 seconds with activation of Non-DRX mode and Downlinkdelayed TBF release
However, these tests are not statistically reliable
In B6 (with Non-DRX mode) In B7 full
DL FTP with (4+ 1) MS 5.3 Kbytes/s 5.4 Kbytes/s
UL FTP (1 TS on UL) 1.3 Kbytes/s 1.3 Kbytes/s
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End user QoS
> WEB test results in two European networks :
First network : Web server on intranet. Total page size : 185kbytes with 46 images of average size = 2.87 kbytes
Second network : Web server on internet. Total page size : 60kbytes with 45 images of average size = 0.99 kbytes and with Javascripts
For both : Ericsson core network, Siemens S45 and PC withWindows 2000 (MTU = 1500 bytes, TCP window size : Firstnetwork = 14600 bytes, Second network = 11680 bytes)
B6 : w/o Non DRX mode
B7 iso B6 : w/o Non DRX mode, with Delayed emission of final PUAN, new coding scheme
adaptation, ...
B7 Full : with Non DRX mode, Delayed DL TBF release, Delayed emission of final PUAN,
new coding scheme adaptation, ...
B6 B7 iso B6 B7 full
First network 82 61
Second network 123.45 69.3 56
Average Page download duration (s) Average WEB Throughput (kbit/s)
B6 B7 iso B6 B7 full
First network 18.05 24.26
Second network 3.89 6.93 8.57
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Agenda
> OMC-R QoS indicators> End user QoS
> GPRS QoS follow-up method
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GPRS QoS follow-up method
> Despite the OMC-R QoS follow-up is not sufficient to have acomplete status of the end user QoS, following domains mustbe followed :
radio resources availability and sharing
DL/UL TBF establishment success rate
DL/UL TBF normal and acceptable release rate DL/UL RLC re-transmission rate
CS2/(CS1 +CS2) ratio
To ensure that
GPRS radio
layersare working
properly
To ensure that
enough PDCH
are available for
GPRS and thatthere is no impact
on the GSM
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GPRS QoS follow-up method
> Radio resources availability and sharing : TCH blocking rate
CCCH load, CCCH load due to GPRS
TBF establishment failures due to radio congestion
TBF establishment : TS distribution
% of time DL/UL TBF are granted the max nb of PDCH theysupport and the corresponding MS are engaged in DL/UL biasedtransfers
PDCH usage
Smooth PDCH adaptation to cell load variation :MAX_PDCH_DYN variable
MPDCH usage if Master channel activated
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GPRS QoS follow-up method
> Other OMC-R QoS indicators are interesting to follow theefficiency of some features :
Delayed DL TBF release
TBF resources re-allocation