3G RAN Key Performance
Indicators
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3G RAN Key Performance Indicators
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Contents
Contents
1
1.1
1.2
1.2.1
1.2.2
1.2.3
1.3
Introduction .......................................................................................... 6
The structure of listed Key Performance Indicators ................................ 6
Viewpoints of the Key Performance Indicators ....................................... 6
KPI classification .................................................................................... 7
Network or user KPI ............................................................................... 7
Summary of KPI viewpoints.................................................................... 8
Call Setup Success Rates (CSSR)......................................................... 9
2
Defined targets for WCDMA RAN Key Performance
Indicators............................................................................................ 11
3
3.1
3.1.1
3.1.2
3.1.3
Available Key Performance Indicators in RAN1.5............................ 16
High Level Indicators for Accessibility................................................... 16
RRC Setup and Access Complete Ratio [%] ........................................ 16
RAB Setup and Access Complete Ratio, Voice [%] .............................. 18
RAB Setup and Access Complete Ratio, RT Service Other
Than Voice [%]..................................................................................... 18
High Level Indicators for Retainability................................................... 19
RRC Drop Ratio [%] ............................................................................. 19
RAB Drop Ratio, Voice [%]................................................................... 20
RAB Drop Ratio, RT Services Other Than Voice [%]............................ 21
RAB Drop Ratio, NRT Services [%] ...................................................... 23
High Level Indicators for Usage............................................................ 24
Cell Availability [%] ............................................................................... 24
Average Uplink Load [dBm].................................................................. 24
Average Downlink Load [dBm] ............................................................. 26
Average RACH Throughput [kbit/s] ...................................................... 27
Average FACH Throughput [kbit/s]....................................................... 28
Average PCH Throughput [kbit/s] ......................................................... 28
High Level Indicators for Mobility.......................................................... 29
Soft Handover Overhead [%]................................................................ 29
3.2
3.2.1
3.2.2
3.2.3
3.2.4
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.4
3.4.1
4
4.1
4.1.1
4.1.2
4.1.3
4.1.4
4.2
4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.3
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Available Key Performance Indicators in RAN04............................. 31
High Level Indicators for Accessibility................................................... 31
RRC Setup and Access Complete Ratio [%] ........................................ 31
RAB Setup and Access Complete Ratio, NRT Services [%] ................. 32
RAB Setup and Access Complete Ratio, Multi RAB Services
[%]........................................................................................................ 33
LCS Setup [%]...................................................................................... 36
High Level Indicators for Retainability................................................... 37
RRC Drop Ratio [%] ............................................................................. 37
RAB Drop Ratio, Voice [%]................................................................... 39
RAB Drop Ratio, RT Services Other Than Voice [%]............................ 41
RAB Drop Ratio, NRT Services [%] ...................................................... 44
RAB Drop Ratio, Multi RAB Services [%] ............................................. 45
High Level Indicators for Usage............................................................ 49
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3G RAN Key Performance Indicators
4.3.1
4.3.2
4.3.3
4.3.4
4.4
4.4.1
4.4.2
4.4.3
4.4.4
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Noise floor of the System [dBm] ...........................................................49
Average SAB Throughput [kbit/s]..........................................................50
Allocated UL Dedicated Channel Capacity [kbit/s] ................................51
Allocated DL Dedicated Channel Capacity [kbit/s] ................................53
High Level Indicators for Mobility ..........................................................56
Soft Handover Success Rate [%]..........................................................56
Soft Handover Overhead [%]................................................................56
Intra System Hard Handover Success Ratio [%]...................................57
Inter System Hard Handover Success Ratio [%]...................................58
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Summary of changes
Summary of changes
This is the fifth draft issue of this document.
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3G RAN Key Performance Indicators
Introduction
This document defines various Key Performance Indicators (KPIs) for Nokia
3G Networks. The main focus is on formulas. However, some numerical target
values for KPIs are listed.
Currently only Radio Access Network KPIs are covered.
The document includes the following chapters:
•
Introduction
•
Targets of the KPIs
•
RAN1.5 KPIs
•
RAN04 KPIs (new and modified KPIs from earlier RAN releases)
•
Appendices (KPI template)
•
References
NOTE! Some of the KPIs are not yet available in our official reporting tools.
These are marked separately in each KPI description.
1.1
The structure of listed Key Performance
Indicators
All listed items for each KPI are based on a common template. The template is
found in Appendix A.
1.2
Viewpoints of the Key Performance Indicators
When creating KPIs the following issues have been considered:
•
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What is the common classification of each KPI
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Introduction
1.2.1
•
Does the KPI indicate the Network or User view of the calculated
outcome
•
What should each KPI tell the operator
•
What kind of target values can there be for each KPI
KPI classification
The KPIs follow the commonly used classification:
•
Accessibility
•
Retainability
•
Usage
•
Mobility
•
Integrity
The classification is visible in subchapters for a KPI Class for each release.
Each KPI description also includes the KPI Class.
Inside the class there can be certain KPIs that include an additional
classification:
Usage
•
Resource availability based KPIs
•
Resource allocation KPIs
•
Load based KPIs
•
Throughput based KPIs
Mobility
•
1.2.2
KPI is related to the Source and/or Target Cell
Network or user KPI
In order to distinguish if the KPI indicates the network or user viewpoint, the
following information is added to the KPI definition:
•
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KPI IDs ending with an A means that the KPI is created from the user
viewpoint for example RAN_KPI_0001A
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3G RAN Key Performance Indicators
1.2.3
Summary of KPI viewpoints
The following picture illustrates the items described in Chapter 1.2:
KPI
Class
KPI
Outcome
RAN_KPI containing A = USER KPIs
Accessibility
LCS [7]
RAB Success or
Failure Rate
Retainability
Service Level [2]
RAB Success or
Failure Rate
PS, RM related to a UE
PC related to a UE
HC related to a UE
RRC signaling related to a UE
L3 signaling related to a UE
L3 Signaling Measurements
RRC Signaling Measurement
Mobility
Source
Cell
Intra System HHO [4], Soft HO [5], Inter System HHO [6]
Radio Connection Performance
Integrity
Availability
Load
Usage
Retainability
Cell Resource [1]
Traffic [3]
Service Level [2]
LCS [7]
Accessibility
KPI Class
Figure 1.
Target
Cell
HO Success or
Failure Rate
RB Quality
Allocations RB Allocations
Throughput Cell Traffic/Power
RAB Success or
Failure Rate
RAB Success or
Failure Rate
RAN_KPI = NETWORK KPIs
Summary of KPI Viewpoints
The picture includes the viewpoints previously described in the introduction
chapter:
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•
To the left: The classification of the KPIs (KPI Class)
•
In the middle: The separation of the user and network defined KPIs
(RAN_KPI vs. RAN_KPI_xxx_A)
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Introduction
•
To the right: What each KPI should indicate (KPI Outcome)
The pyramids illustrate:
•
The upper pyramid: RAN functionalities and related RAN statistical
measurements from the user equipment (UE) perspective.
•
The lower (reversed) pyramid: RAN functionalities and related RAN
statistical measurements from the network perspective.
RAN measurements are listed inside the pyramids. The KPIs are based on the
counters found in the RAN measurements. The reference mark for a
measurement, for example Cell Resource [1] indicates that a KPI(s) has been
defined for the measurement. The KPI with the required information is
described in this document, but the counter (and detailed measurement)
description is found in the given reference document.
•
The amounts of the statistical data related to the defined KPIs (and
classes)
−
•
The importance of each KPI (class)
−
•
When you go down the pyramid the number of data increases
(there are more bricks in a pyramid in the lower layers than in the
upper layers)
The tops of the pyramids represent the most essential data (the top
layers of a pyramid becomes visible before the lower layers)
The contradictions inside the KPI classes (the different angles to a
pyramid layer)
−
−
Usage
−
The availability of resources vs. the allocations of the
available resources
−
The load of allocated resources vs. the gain (=throughput)
Mobility
−
1.3
The HO in the Source Cell vs. the Target Cell
Call Setup Success Rates (CSSR)
In the GSM world, the Call Setup Success Rates (CSSR) are the most followed
up KPIs. It is natural to think that this is the same in the WCDMA world. But
when we move to WCDMA, the call setup is not done exactly the same way as
in GSM.
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3G RAN Key Performance Indicators
In GSM, the UE first seizes the SDDCH channel and after that – if the user
needs to establish a call – the network allocates a TCH channel for the user and
the call can be established.
Therefore, in GSM we are able to calculate the CSSR based upon the moment
that the network starts to allocate a TCH (or more than one) for call
establishment. The reason is that we know that every time we start to allocate a
TCH we know that a call setup starts.
In WCDMA, the UE asks for an RRC channel and after that the network sends
the RRC configuration to the UE. After the UE has successfully established the
RRC connection, further signalling can take place. Depending on the received
RRC setup cause, the network expects a call establishment (=RAB) next.
Therefore, in WCDMA we are not able to calculate the CSSR reliably. The
reason is that an RRC can be asked for a cause (for example, registration) that
does not specify everything what will happen. Therefore, if the UE asks the
RRC for the registration cause it is possible that during the time the RRC is up
the user decides to start a call. When the RRC is up and running, the call request
is going in the NAS (Non Access Stratum) layer which is not visible to RAN
part of the 3G network.
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Defined targets for WCDMA RAN Key Performance Indicators
Defined targets for WCDMA RAN Key
Performance Indicators
Tables 1 and 2 (RAN 1.5 and RAN04 Key Performance Indicators) contain a
summary of the current understanding of KPIs to be followed in 3G RAN. The
KPI development work is still ongoing, and the finalisation of used formulas
and their target values can be done only with practical knowledge of the 3G
networks and measured performance data.
It should be noted that the listed targets are not Nokia guarantee values.
Any change in measurements, calculation formula and/or used counters will
effect to the listed goals.
This document does not cover network acceptance targets. If a KPI listed in
this document is part of an acceptance agreement, the acceptance target for the
KPI depends on the acceptance agreement.
The performance goals in the table below are the average goals for a cell
cluster. The performance of individual cells may differ from the listed values.
The KPIs listed in the table are explained separately in corresponding
subchapters.
Note 1: The listed targets are obsolete if and when the load in the network is too
low. The load is considered to be too low if the average number of calls per cell
is lower than 300 calls during busy hour.
Note 2: The listed targets are obsolete if and when the load in the network is
higher than the planned target load of the network or if the actual traffic mix
differs considerably from the planned assumptions.
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3G RAN Key Performance Indicators
Table 1. RAN 1.5 Key Performance Indicators
KPI ID
KPI Class
Indicates
Live Network
Target
RAN_KPI_0001
Accessibility
(Network)
RRC Accessibility > 97 %
Rates
RAN_KPI_0001A Accessibility
(User)
RRC Accessibility N/A
Rates
(some of the
counters are not
available at the
document
delivery)
RAN_KPI_0002
Accessibility
RAB (AMR)
Accessibility
Rates
> 98.5 %
RAN_KPI_0003
Accessibility
RAB (RT)
Accessibility
Rates
> 98 %
RAN_KPI_0004
Accessibility
RAB (NRT)
Accessibility
Rates
> 98 %
RAN_KPI_0005
Retainability
(Network)
RRC Retainability N/A (Use RAB
Rates
Retainability
instead)
(drop rate)
RAN_KPI_0006
Retainability
(Network)
RAB (AMR)
Retainability
Rates
<4%
RAB (RT)
Retainability
Rates
<4%
RAB (NRT)
Retainability
Rates
<4%
Total Uplink
Inteference
N/A (depends on
PrxNoise and
Traffic)
(drop rate)
RAN_KPI_0007
Retainability
(Network)
(drop rate)
RAN_KPI_0008
Retainability
(drop rate)
RAN_KPI_0009
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Usage
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Defined targets for WCDMA RAN Key Performance Indicators
RAN_KPI_0010
Usage
Total Downlink
Power
N/A (depends on
Traffic)
RAN_KPI_0011
Usage
RACH
Throughput
Depends on
Traffic and CCH
capacity.
RAN_KPI_0012
Usage
FACH
Throughput
Depends on
Traffic and CCH
capacity.
RAN_KPI_0013
Usage
PCH Throughput
Depends on
Traffic and CCH
capacity.
RAN_KPI_0018
Usage
WCELL
Availability
> 99 %
RAN_KPI_0019
Mobility
Soft Handover
Overhead for One
Cell
40 % (Average
AS size = 1.4)
Table 2.
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RAN04 Key Performance Indicators
KPI ID
KPI Class
Indicates
Live Network
Target
RAN_KPI_0026
Accessibility
MultiRAB
(AMR+NRT)
Accessibility
Rates
N/A (Not enough
experience yet)
RAN_KPI_0027
Accessibility
MultiRAB
(RT+NRT)
Accessibility
Rates
N/A (Not enough
experience yet)
RAN_KPI_0028
Accessibility
MultiRAB
(NRT+NRT)
Accessibility
Rates
N/A (Not enough
experience yet)
RAN_KPI_0005
Retainability
(Network) (drop
rate)
RRC Retainability
Rates
N/A (Use RAB
Retainability
instead)
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3G RAN Key Performance Indicators
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RAN_KPI_0005A Retainability
(User) (drop
rate)
RRC Retainability N/A (Use RAB
Rates
Retainability
instead)
RAN_KPI_0006
RAB (AMR)
Retainability
Rates
N/A (Use the
0006A KPI
instead)
RAN_KPI_0006A Retainability
(User) (drop
rate)
RAB (AMR)
Retainability
Rates
< 4%
RAN_KPI_0007
RAB (RT)
Retainability
Rates
N/A (Use the
0007A KPI
instead)
RAN_KPI_0007A Retainability
(User) (drop
rate)
RAB (RT)
Retainability
Rates
<4%
RAN_KPI_0008
Retainability
(drop rate)
RAB (NRT)
Retainability
Rates
<4%
RAN_KPI_0029
Retainability
(drop rate)
MultiRAB
(AMR+NRT)
Retainability
Rates
N/A (Not enough
experience yet)
RAN_KPI_0030
Retainability
(drop rate)
MultiRAB
(RT+NRT)
Retainability
Rates
N/A (Not enough
experience yet)
RAN_KPI_0031
Retainability
(drop rate)
MultiRAB
(NRT+NRT)
Retainability
Rates
N/A (Not enough
experience yet)
RAN_KPI_0032
Usage
Noise floor of the <
System
-102 dBm
RAN_KPI_0014
Usage
Allocated Uplink Depends on
Dedicated
Traffic and DCH
Channel Capacity capacity.
for CS Voice
RAN_KPI_0015
Usage
Allocated
Downlink
Dedicated
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Retainability
(Network) (drop
rate)
Retainability
(Network) (drop
rate)
Depends on
Traffic and DCH
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Channel Capacity
for CS Voice
capacity.
RAN_KPI_0016
Usage
Allocated Uplink
Dedicated
Channel Capacity
for Data Calls
Depends on
Traffic and DCH
capacity.
RAN_KPI_0017
Usage
Allocated
Downlink
Dedicated
Channel Capacity
for Data Calls
Depends on
Traffic and DCH
capacity.
RAN_KPI_0025
Usage
SAB Throughput
N/A (Not enough
experience yet)
RAN_KPI_0020
Mobility
Soft Handover
Success Rate
> 98 %
RAN_KPI_0021
Mobility
Intra System Hard
Handover Success
Rate
N/A (Not enough
experience yet)
RAN_KPI_0022
Mobility
Inter System Hard
Handover Success
Rate
N/A (Not enough
experience yet)
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3G RAN Key Performance Indicators
Available Key Performance Indicators in
RAN1.5
3.1
High Level Indicators for Accessibility
3.1.1
RRC Setup and Access Complete Ratio [%]
KPI NAME: RRC Setup and Access Complete Ratio from the network point of
view
Published: 20.04.2004
KPI ID: RAN_KPI_0001
KPI version: 1.0u
Description: RRC Setup and Access Complete Ratio [%] over the reporting
period. Covers RRC Setup and Access phases (From RRC Connection Request
to RRC Connection Setup Complete).
This KPI is based on Service Level Measurement [2].
Note 1: RRC connection is needed also for other purposes than a call (SMS,
LU, Detach, etc.).
KPI Formula:
100 *
sum ( M1001C8)
%
sum ( M1001C0)
KPI Class: Accessibility
Target values: See Chapter 2.
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Available Key Performance Indicators in RAN1.5
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
KPI NAME: RRC Setup and Access Complete Ratio from end user perspective
Published: 20.04.2004
KPI ID: RAN_KPI_0001A
KPI version: 1.0u
Description: RRC Setup and Access Complete Ratio [%] over the reporting
period. Covers RRC Setup and Access phases (From RRC Connection Request
to RRC Connection Setup Complete).
This KPI is based on Service Level Measurement [2].
Note 1: RRC connection is needed also for other purposes than a call (SMS,
LU, Detach, etc.).
KPI Formula:
100 *
sum ( M1001C8)
%
sum ( M1001C0 - M1001C242 - M1001C241)
KPI Class: Accessibility
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
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3G RAN Key Performance Indicators
3.1.2
RAB Setup and Access Complete Ratio, Voice [%]
KPI NAME: RAB Setup and Access Complete Ratio for AMR Voice
Published: 20.04.2004
KPI ID: RAN_KPI_0002.
KPI version: 1.0u
Description: RAB Setup and Access Complete Ratio [%] for voice calls over
the reporting period. Covers RAB Setup and Access phases (From RAB
Assignment Request to Radio Bearer Setup Complete).
This KPI is based on Service Level Measurement [2].
Note 1: RRC connection is needed before RAB setup in order to make a call.
KPI Formula:
100 *
sum ( M1001C115)
%
sum ( M1001C66)
KPI Class: Accessibility
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
3.1.3
RAB Setup and Access Complete Ratio, RT Service Other Than
Voice [%]
KPI NAME: RAB Setup and Access Complete Ratio for RT Service Excluding
Voice
Published: 20.04.2004
KPI ID: RAN_KPI_0003.
KPI version: 1.0u
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Available Key Performance Indicators in RAN1.5
Description: RAB Setup and Access Complete Ratio [%] for RT service
excluding voice over the reporting period. Covers RAB Setup and Access
phases (From RAB Assignment Request to Radio Bearer Setup Complete).
This KPI is based on Service Level Measurement [2].
Note 1: RRC connection is needed before RAB setup in order to make a call.
KPI Formula:
sum ( M1001C116 +
M1001C117 +
M1001C118 +
100 *
M1001C119)
%
sum ( M1001C67 +
M1001C68 +
M1001C69 +
M1001C70)
KPI Class: Accessibility
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
3.2
High Level Indicators for Retainability
3.2.1
RRC Drop Ratio [%]
KPI NAME: RRC Drop Ratio from network perspective
Published: 20.04.2004
KPI ID: RAN_KPI_0005.
KPI version: 1.0u
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3G RAN Key Performance Indicators
Description: RRC Drop Ratio [%] over the reporting period. Covers RRC
Active Phase of a call.
This KPI is based on Service Level Measurement [2].
Note 1: In this KPI, RRC Releases due to pre-emption are considered as
successful case.
Note 2: In RAN1.5 and RAN04 the CN related RAB releases due to failure is
included in the counter M1001C12.
KPI Formula:
sum ( M1001C12 +
M1001C13 +
100 - 100 *
M1001C14)
%
sum ( M1001C8)
KPI Class: Retainability
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes: Note that the best active set cell may change
during the call. Therefore, the object of the measurement can be different for
connection establishment (setup and access phases) and release counters (active
phase) of the same call.
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes: Note that an established call can be started and
ended in two separate measurement intervals. Therefore, the RAB Active and
RAB and DCH holding time counters stating the RAB active releases and
durations are recorded in the measurement interval during which the call was
released.
3.2.2
RAB Drop Ratio, Voice [%]
KPI NAME: RAB Drop Ratio, AMR Voice from Network Perspective
Published: 20.04.2004
KPI ID: RAN_KPI_0006.
KPI version: 1.0u
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Available Key Performance Indicators in RAN1.5
Description: RAB Drop Ratio for AMR Voice [%] over the reporting period.
Covers RAB Active Phase of a call.
This KPI is based on Service Level Measurement [2].
Note 1: In this KPI, RAB Releases due to pre-emption are considered as
successful case.
KPI Formula:
sum ( M1001C136 +
M1001C143
100 - 100 *
+ M1001C144)
%
sum ( M1001C115)
KPI Class: Retainability
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes: Note that the best active set cell may change
during the call. Therefore, the object of the measurement can be different for
connection establishment (setup and access phases) and release counters (active
phase) of the same call.
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes: Note that an established call can be started and
ended in two separate measurement intervals. Therefore, the RAB Active and
RAB and DCH holding time counters stating the RAB active releases and
durations are recorded in the measurement interval during which the call was
released.
3.2.3
RAB Drop Ratio, RT Services Other Than Voice [%]
KPI NAME: RAB Drop Ratio, RT Services Excluding Voice
Published: 20.04.2004
KPI ID: RAN_KPI_0007.
KPI version: 1.0u
Description: RAB Drop Ratio for AMR Voice [%] over the reporting period.
Covers RAB Active Phase of a call.
This KPI is based on Service Level Measurement [2].
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Note 1: In this KPI, RAB Releases due to pre-emption are considered as
successful case.
KPI Formula:
sum ( M1001C137
+ M1001C138
+ M1001C139
+ M1001C140)
+ sum ( M1001C151
+ M1001C152
+ M1001C153
+ M1001C154
+ M1001C167
+ M1001C168
+ M1001C169
+ M1001C170 )
%
100 - 100 *
sum ( M1001C116
+ M1001C117
+ M1001C118
+ M1001C119 )
KPI Class: Retainability
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes: Note that the best active set cell may change
during the call. Therefore, the object of the measurement can be different for
connection establishment (setup and access phases) and release counters (active
phase) of the same call.
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes: Note that an established call can be started and
ended in two separate measurement intervals. Therefore, the RAB Active and
RAB and DCH holding time counters stating the RAB active releases and
durations are recorded in the measurement interval during which the call was
released.
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3.2.4
RAB Drop Ratio, NRT Services [%]
KPI NAME: RAB Drop Ratio, NRT Services, from Network Perspective
Published: 20.04.2004
KPI ID: RAN_KPI_0008.
KPI version: 1.0u
Description: RAB Drop Ratio for AMR Voice [%] over the reporting period.
Covers RAB Active Phase of a call.
This KPI is based on Service Level Measurement [2].
Note 1: For NRT RABs pre-emption is not possible.
KPI Formula:
sum ( M1001C141
+ M1001C142)
+ sum ( M1001C171
100 - 100 *
+ M1001C172)
%
sum ( M1001C120
+ M1001C121)
KPI Class: Retainability
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes: Note that the best active set cell may change
during the call. Therefore the object of the measurement can be different for
connection establishment (setup and access phases) and release counters (active
phase) of the same call.
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes: Note that an established call can be started and
ended in two separate measurement intervals. Therefore, the RAB Active and
RAB and DCH holding time counters stating the RAB active releases and
durations are recorded in the measurement interval during which the call was
released.
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3.3
High Level Indicators for Usage
3.3.1
Cell Availability [%]
KPI NAME: Cell Availability
Published: 20.04.2004
KPI ID: RAN_KPI_0018
KPI version: 1.0u
Description: The availability of the WCELLs under a Controlling RNC
(CRNC).
This KPI is based on Cell Resource Measurement [1].
KPI Formula:
100 * ( ( M1000C73 * 20 ) / " PERDIOD DURATION" *60) )%
(Where PERIOD DURATION measurement interval in minutes.)
KPI Class: Usage
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour
Time Summary Level notes:
3.3.2
Average Uplink Load [dBm]
KPI NAME: Average Uplink Load
Published: 20.04.2004
Published: (internal information)
KPI ID: RAN_KPI_0009
KPI version: 1.0u
Description: Average received uplink power [dBm] shows the uplink loading
of a cell over the reporting period.
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This measurement is based on Cell Resource Measurement [1], where the total
uplink interference (RSSI) of a cell is measured.
Note: Calculation notes
The counter values are given in standardised RSSI values (0…621). This means
that the values must be converted to dBm values (-112.1 … -50.0) before the
KPI can be calculated.
It is possible that the counter in the formula is not updated during the
measurement period, meaning that the denominator counter is not updated.
These samples should be filtered out.
When using the formula, linear scale has to be used with calculations. This
means that the dBm values in the counters must be converted to Watts and, after
the calculation is done, the result must be converted back to dBms.
KPI Formula:
average ( (M1000C0 * M1000C1
+ M1000C2 * M1000C3
+ M1000C4 * M1000C5
+ M1000C6 * M1000C7
+ M1000C8 * M1000C9 ) /
(M1000C1
+ M1000C3
+ M1000C5
+ M1000C7
+ M1000C9 )) dBm
KPI Class: Usage
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
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3.3.3
Average Downlink Load [dBm]
KPI NAME: Average Downlink Load
Published: 20.04.2004
Published: (internal information)
KPI ID: RAN_KPI_0010
KPI version: 1.0u
Internal KPI ID (only for internal use): rnc_102a
Description: Average transmitted downlink power [dBm] shows the downlink
loading of a cell over the reporting period.
This measurement is based on Cell Resource Measurement [1], where the total
transmitted power of a cell is measured.
Note: Calculation notes
When using the formula, linear scale has to be used with calculations. This
means that the dBm values in the counters must be converted to Watts and, after
the calculation is done, the result must be converted back to dBms.
It is possible that the counter in the formula is not updated during the
measurement period, meaning that the denominator counter is not updated.
These samples should be filtered out.
The calculation must also include a division by 100 in order to take out the raw
counter unit value multiplication by 100.
KPI Formula:
average ( (M1000C14 *M1000C15
+ M1000C16 *M1000C17
+ M1000C18 *M1000C19
+ M1000C620 *M100021
+ M1000C22 *M100023 ) /
(M1000C15
+M1000C17
+M1000C19
+ M100021
+ M100023 )
)/100 dBm
(The number 100 in the formula represents the raw counter dBm value
correction.)
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KPI Class: Usage
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
3.3.4
Average RACH Throughput [kbit/s]
KPI NAME: Average RACH Throughput
Published: 20.04.2004
KPI ID: RAN_KPI_0011
KPI version: 1.0u
Description: Average RACH Throughput [kbit/s] over the reporting period.
Includes both the user and signalling data.
This measurement is based on Cell Resource Measurement [1], where the
average RACH Throughput of a cell is measured.
KPI Formula:
average (
M1000C60
) kbit/s
M1000C61
KPI Class: Usage
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
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3.3.5
Average FACH Throughput [kbit/s]
KPI NAME: Average FACH Throughput
Published: 20.04.2004
KPI ID: RAN_KPI_0012
KPI version: 1.0u
Description: Average FACH Throughput [kbit/s] over the reporting period.
Includes both the user and signalling data.
This measurement is based on Cell Resource Measurement [1], where the
average FACH Throughput of a cell is measured.
KPI Formula:
average (
M1000C66
) kbit/s
M1000C67
KPI Class: Usage
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
3.3.6
Average PCH Throughput [kbit/s]
KPI NAME: Average PCH Throughput
Published: 20.04.2004
KPI ID: RAN_KPI_0013.
KPI version: 1.0u
Description: Average PCH Throughput [kbit/s] over the reporting period.
Includes both the user and signalling data.
This KPI is based on Cell Resource Measurement [1], where the average PCH
Throughput of a cell is measured.
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KPI Formula:
average (
M1000C70
) kbit/s
M1000C71
KPI Class: Usage
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
3.4
High Level Indicators for Mobility
3.4.1
Soft Handover Overhead [%]
KPI NAME: Soft Handover Overhead for One Cell
Published: 20.04.2004
KPI ID: RAN_KPI_0019
KPI version: 1.0u
Description: Soft Handover Overhead [%] over the reporting period for One
Cell.
This KPI is based on Soft Handover (SHO) Measurement [5] where Active Set
sizes are measured.
Note 1: In the SHO Measurement, the counters are both for RNC and WCELL.
This formula is purely using the cell level counters.
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KPI Formula:
sum ( M1007C0 + M1007C19) * 1
+ sum ( M1007C1 + M1007C20 ) * 2
+ sum ( M1007C2 + M1007C21 ) * 3
+ sum ( M1007C3 + M1007C22 ) * 4
+ sum (M1007C4 + M1007C23 ) * 5
+ sum (M1007C5 + M1007C24 ) * 6
(
− 1 ) * 100 %
sum ( M1007C0 + M1007C1
+ M1007C2 + M1007C3
+ M1007C4 + M1007C5
+ M1007C19 + M1007C20
+ M1007C21 + M1007C22
+ M1007C23 + M1007C24 )
KPI Class: Mobility
Target values: See Chapter 2.
Object Summary Levels: Cell
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
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RAN04
4.1
High Level Indicators for Accessibility
4.1.1
RRC Setup and Access Complete Ratio [%]
KPI NAME: RRC Setup and Access Complete Ratio from end user
perspective.
Published: This KPI is approved.
KPI ID: RAN_KPI_0001A
KPI version: 2.0a
KPI Formula:
100 *
sum ( M1001C8)
%
sum ( M1001C0 - M1001C242 - M1001C241 + M1001C259 - M1001C260)
KPI Class: Accessibility
Target values: See also Chapter 2.
Description: RRC Setup and Access Complete Ratio [%] over the reporting
period. Covers RRC Setup and Access phases (From RRC Connection Request
to RRC Connection Setup Complete).
This KPI is based on Service Level Measurement [2].
Note 1: RRC connection is needed also for other purposes than a call (SMS,
LU, Detach, etc.).
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
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Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
4.1.2
RAB Setup and Access Complete Ratio, NRT Services [%]
KPI NAME: RAB Setup and Access Complete Ratio for NRT Service from
Network perspective
Published: This KPI is accepted
KPI ID: RAN_KPI_0004.
KPI version: 1.0a
Description: RAB Setup and Access Complete Ratio [%] for NRT services
over the reporting period. Covers RAB Setup and Access phases (From RAB
Assignment Request to Radio Bearer Setup Complete).
This KPI is based on Service Level Measurement [2].
Note 1: RRC connection is needed before RAB setup in order to make a call.
Note 2: The RAB reject due to a previous anchoring case is taken into account.
KPI Formula:
sum ( M1001C120 +
100 *
M1001C121)
%
sum ( M1001C71 +
M1001C72
- M1001C118 M1001C113)
KPI Class: Accessibility
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
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KPI NAME: RAB Setup and Access Complete Ratio for NRT Service from
User perspective
Published: This KPI is accepted
KPI ID: RAN_KPI_0004A
KPI version: 1.0a
Description: RAB Setup and Access Complete Ratio [%] for NRT services
over the reporting period. Covers RAB Setup and Access phases (From RAB
Assignment Request to Radio Bearer Setup Complete).
This KPI is based on Service Level Measurement [2].
Note 1: RRC connection is needed before RAB setup in order to make a call.
KPI Formula:
sum ( M1001C120 +
100 *
M1001C121)
%
sum ( M1001C71 +
M1001C72)
KPI Class: Accessibility
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
4.1.3
RAB Setup and Access Complete Ratio, Multi RAB Services [%]
Multi RAB AMR+NRT Service
KPI NAME: RAB Setup and Access Complete Ratio for Multi RAB
AMR+NRT Service
Published: This KPI is approved
KPI ID: RAN_KPI_0026.
KPI version: 1.0a
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Description: RAB Setup and Access Complete Ratio [%] for Multi RAB
AMR+NRT Service services over the reporting period. Covers RAB Setup and
Access phases (From RAB Assignment Request to Radio Bearer Setup
Complete).
This KPI is based on Service Level Measurement [2].
Note 1: RRC connection is needed before RAB setup in order to make a call.
KPI Formula:
sum ( M1001C287 + M1001C288
+ M1001C289 + M1001C290
+ M1001C291 + M1001C292
+ M1001C299 + M1001C300
+ M1001C301 + M1001C302
100 *
+ M1001C303 + M1001C304 )
%
sum (M1001C281 + M1001C282
+ M1001C283 + M1001C284
+ M1001C285 + M1001C286
+ M1001C293 + M1001C294
+ M1001C295 + M1001C296
+ M1001C297 + M1001C298)
KPI Class: Accessibility
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
RT (excluding AMR) + NRT
KPI NAME: RAB Setup and Access Complete Ratio for Multi RAB
containing RT +NRT Service
Published: This KPI is approved.
KPI ID: RAN_KPI_0027
KPI version: 1.0a
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Description: RAB Setup and Access Complete Ratio [%] for Multi RAB
containing RT+NRT Services over the reporting period. Covers RAB Setup and
Access phases (From RAB Assignment Request to Radio Bearer Setup
Complete).
This KPI is based on Service Level Measurement [2].
Note 1: RRC connection is needed before RAB setup in order to make a call.
KPI Formula:
sum ( M1001C319
+ M1001C320
+ M1001C321
+ M1001C322
+ M1001C323
100 *
+ M1001C324 )
%
sum (M1001C313
+ M1001C314
+ M1001C315
+ M1001C316
+ M1001C317
+ M1001C318 )
KPI Class: Accessibility
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
More than one NRT service
KPI NAME: RAB Setup and Access Complete Ratio for Multi RAB with more
than one NRT Service
Published: This KPI is approved.
KPI ID: RAN_KPI_0028
KPI version: 1.0a
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Description: RAB Setup and Access Complete Ratio [%] for Multi RAB with
more than one NRT Service over the reporting period. Covers RAB Setup and
Access phases (From RAB Assignment Request to Radio Bearer Setup
Complete).
This KPI is based on Service Level Measurement [2].
Note 1: RRC connection is needed before RAB setup in order to make a call.
KPI Formula:
sum ( M1001C308
+ M1001C309
+ M1001C310
100 *
+ M1001C312)
%
sum (M1001C305
+ M1001C306
+ M1001C307
+ M1001C311)
KPI Class: Accessibility
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
4.1.4
LCS Setup [%]
KPI NAME: LCS Setup and Complete Ratio
Published: This KPI is approved.
KPI ID: RAN_KPI_0024
KPI version: 1.0a
Description: LCS Setup and Access Complete Ratio [%] over the reporting
period. Covers the phase from Location Reporting Request to Location Control
Report.
This KPI is based on Location Services Measurement [7].
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KPI Formula:
100 *
sum ( M1011C0 - M1011C2)
%
sum ( M1011C0)
KPI Class: Accessibility
Target values: See Chapter 2.
Object Summary Levels: RNC and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
4.2
High Level Indicators for Retainability
4.2.1
RRC Drop Ratio [%]
KPI NAME: RRC Drop Ratio from network perspective
Published: This KPI is approved.
KPI ID: RAN_KPI_0005.
KPI version: 2.0a
Description: RRC Drop Ratio [%] over the reporting period. Covers RRC
Active Phase of a call.
This KPI is based on Service Level Measurement [2].
Note 1: In this KPI RRC Releases due to pre-emption are considered as
successful case.
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KPI Formula:
sum ( M1001C15 + M1001C16 + M1001C17
+ M1001C18 + M1001C19
100 *
+ M1001C20 + M1001C21)
sum ( M1001C12 + M1001C13
%
+ M1001C14 + M1001C15
+ M1001C16 + M1001C17
+ M1001C18 + M1001C19
+ M1001C20 + M1001C21)
KPI Class: Retainability
Target values: See Chapter 2.
Note 2: In RAN1.5 and RAN04, the CN related RAB releases due to failure are
included in the counter M1001C12.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes: Note that an established call can be started and
ended in two separate measurement intervals. Therefore, the RAB Active and
RAB and DCH holding time counters stating the RAB active releases and
durations are recorded in the measurement interval during which the call was
released.
KPI NAME: RRC Drop Ratio from User perspective
Published: This KPI is approved.
KPI ID: RAN_KPI_0005A
KPI version: 1.0a
Description: RRC Drop Ratio [%] over the reporting period. Covers RRC
Active Phase of a call.
This KPI is based on Service Level Measurement [2].
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KPI Formula:
sum ( M1001C14 + M1001C15 + M1001C16 + M1001C17
+ M1001C18 + M1001C19
100 *
+ M1001C20 + M1001C21)
sum ( M1001C12 + M1001C13
%
+ M1001C14 + M1001C15
+ M1001C16 + M1001C17
+ M1001C18 + M1001C19
+ M1001C20 + M1001C21)
KPI Class: Retainability
Target values: See Chapter 2.
Note 2: In RAN1.5 and RAN04, the CN related RAB releases due to failure are
included in the counter M1001C12.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes: Note that an established call can be started and
ended in two separate measurement intervals. Therefore, the RAB Active and
RAB and DCH holding time counters stating the RAB active releases and
durations are recorded in the measurement interval during which the call was
released.
4.2.2
RAB Drop Ratio, Voice [%]
KPI NAME: RAB Drop Ratio, AMR Voice from Network Perspective
Published: This KPI is approved
KPI ID: RAN_KPI_0006.
KPI version: 2.0a
Description: RAB Drop Ratio for AMR Voice [%] over the reporting period.
Covers RAB Active Phase of a call.
This KPI is based on Service Level Measurement [2].
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Note 1: In this KPI, RAB Releases due to pre-emption are considered as
successful case.
KPI Formula:
sum ( M1001C145 + M1001C146 + M1001C147
+ M1001C148 + M1001C149
100 *
+ M1001C150)
sum ( M1001C142 + M1001C143
%
+ M1001C144 + M1001C145 + M1001C146 + M1001C147
+ M1001C148 + M1001C149
+ M1001C150)
KPI Class: Retainability
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes: Note that an established call can be started and
ended in two separate measurement intervals. Therefore, the RAB Active and
RAB and DCH holding time counters stating the RAB active releases and
durations are recorded in the measurement interval during which the call was
released.
KPI NAME: RAB Drop Ratio, AMR Voice from User perspective
Published: This KPI is approved
KPI ID: RAN_KPI_0006A
KPI version: 1.0a
Description: RAB Drop Ratio for AMR Voice [%] over the reporting period.
Covers RAB Active Phase of a call.
This KPI is based on Service Level Measurement [2].
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KPI Formula:
sum ( M1001C144 + M1001C145 + M1001C146 + M1001C147
+ M1001C148 + M1001C149
100 *
+ M1001C150)
sum ( M1001C142 + M1001C143
%
+ M1001C144 + M1001C145 + M1001C146 + M1001C147
+ M1001C148 + M1001C149
+ M1001C150)
KPI Class: Retainability
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes: Note that an established call can be started and
ended in two separate measurement intervals. Therefore, the RAB Active and
RAB and DCH holding time counters stating the RAB active releases and
durations are recorded in the measurement interval during which the call was
released.
4.2.3
RAB Drop Ratio, RT Services Other Than Voice [%]
KPI NAME: RAB Drop Ratio, RT Services Excluding Voice, Network
Perspective
Published: This KPI is approved
KPI ID: RAN_KPI_0007.
KPI version: 2.0a
Description: RAB Drop Ratio for AMR Voice [%] over the reporting period.
Covers RAB Active Phase of a call.
This KPI is based on Service Level Measurement [2].
Note 1: In this KPI, RAB Releases due to pre-emption are considered as
successful case.
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KPI Formula:
sum ( M1001C155 + M1001C156 + M1001C157
+ M1001C158 + M1001C159 + M1001C160
+ M1001C161 + M1001C162 + M1001C163
+ M1001C164 + M1001C165 + M1001C166
+ M1001C179 + M1001C180 + M1001C181
100 *
+ M1001C182 + M1001C183 + M1001C184)
sum ( M1001C137 + M1001C151
%
+ M1001C138 + M1001C153
+ M1001C140 + 1001C169
+ M1001C155 + M1001C156 + M1001C157
+ M1001C158 + M1001C159 + M1001C160
+ M1001C161 + M1001C162 + M1001C163
+ M1001C164 + M1001C165 + M1001C166
+ M1001C179 + M1001C180 + M1001C181
+ M1001C182 + M1001C183 + M1001C184)
KPI Class: Retainability
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes: Note that an established call can be started and
ended in two separate measurement intervals. Therefore, the RAB Active and
RAB and DCH holding time counters stating the RAB active releases and
durations are recorded in the measurement interval during which the call was
released.
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KPI NAME: RAB Drop Ratio, RT Services Excluding Voice, User Perspective
Published: This KPI is approved
KPI ID: RAN_KPI_0007A.
KPI version: 1.0a
Description: RAB Drop Ratio for AMR Voice [%] over the reporting period.
Covers RAB Active Phase of a call.
This KPI is based on Service Level Measurement [2].
KPI Formula:
sum ( M1001C155 + M1001C156 + M1001C157
+ M1001C158 + M1001C159 + M1001C160
+ M1001C161 + M1001C162 + M1001C163
+ M1001C164 + M1001C165 + M1001C166
+ M1001C179 + M1001C180 + M1001C181
100 *
+ M1001C182 + M1001C183 + M1001C184)
sum ( M1001C137 + M1001C151
%
+ M1001C138 + M1001C153
+ MM1001C140 + 1001C169
+ M1001C155 + M1001C156 + M1001C157
+ M1001C158 + M1001C159 + M1001C160
+ M1001C161 + M1001C162 + M1001C163
+ M1001C164 + M1001C165 + M1001C166
+ M1001C179 + M1001C180 + M1001C181
+ M1001C182 + M1001C183 + M1001C184)
KPI Class: Retainability
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes: Note that an established call can be started and
ended in two separate measurement intervals. Therefore, the RAB Active and
RAB and DCH holding time counters stating the RAB active releases and
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durations are recorded in the measurement interval during which the call was
released.
4.2.4
RAB Drop Ratio, NRT Services [%]
KPI NAME: RAB Drop Ratio, NRT Services
Published: This KPI is approved.
KPI ID: RAN_KPI_0008.
KPI version: 2.0a
Description: RAB Drop Ratio for AMR Voice [%] over the reporting period.
Covers RAB Active Phase of a call.
This KPI is based on Service Level Measurement [2].
Note 1: For NRT RABs pre-emption is not possible.
KPI Formula:
sum ( M1001C185 + M1001C186 + M1001C187
+ M1001C188 + M1001C189 + M1001C190
+ M1001C191 + M1001C192 + M1001C193
100 *
+ M1001C194 + M1001C195 + M1001C196)
sum ( M1001C141 + M1001C171
%
+ M1001C142 + M1001C172
+ M1001C185 + M1001C186 + M1001C187
+ M1001C188 + M1001C189 + M1001C190
+ M1001C191 + M1001C192 + M1001C193
+ M1001C194 + M1001C195 + M1001C196)
KPI Class: Retainability
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes: Note that an established call can be started and
ended in two separate measurement intervals. Therefore, the RAB Active and
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RAB and DCH holding time counters stating the RAB active releases and
durations are recorded in the measurement interval during which the call was
released.
4.2.5
RAB Drop Ratio, Multi RAB Services [%]
Multi RAB AMR+NRT Service
KPI NAME: RAB Drop Ratio, Multi RAB AMR+NRT Service from Network
Perspective
Published: This KPI is approved
KPI ID: RAN_KPI_0029
KPI version: 1.0a
Description: RAB Drop Ratio for Multi RAB AMR+NRT Service [%] over the
reporting period. Covers RAB Active Phase of a call.
This KPI is based on Service Level Measurement [2].
Note 1: In this KPI RAB Releases due to pre-emption are NOT considered.
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KPI Formula:
sum ( M1001C341
+ M1001C342
+ M1001C343
+ M1001C344
+ M1001C345
+ M1001C346
+ M1001C347
+ M1001C348
+ M1001C349
+ M1001C350
+ M1001C351
100 *
+ M1001C352 )
%
sum (M1001C287 + M1001C288
+ M1001C289 + M1001C290
+ M1001C291 + M1001C292
+ M1001C299 + M1001C300
+ M1001C301 + M1001C302
+ M1001C303 + M1001C304)
KPI Class: Retainability
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes: Note that the best active set cell may change
during the call. Therefore, the object of the measurement can be different for
connection establishment (setup and access phases) and release counters (active
phase) of the same call.
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes: Note that an established call can be started and
ended in two separate measurement intervals. Therefore, the RAB Active and
RAB and DCH holding time counters stating the RAB active releases and
durations are recorded in the measurement interval during which the call was
released.
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Multi RAB RT + NRT Service
KPI NAME: RAB Drop Ratio, Multi RAB containing RT +NRT Service from
Network Perspective
Published: This KPI is approved.
KPI ID: RAN_KPI_0030
KPI version: 1.0a
Description: RAB Drop Ratio for Multi RAB containing RT +NRT Service
[%] over the reporting period. Covers RAB Active Phase of a call.
This KPI is based on Service Level Measurement [2].
Note 1: In this KPI RAB Releases due to pre-emption are NOT considered.
KPI Formula:
sum ( M1001C357
+ M1001C358
+ M1001C359
+ M1001C360
+ M1001C361
100 *
+ M1001C362)
%
sum (M1001C319
+ M1001C320
+ M1001C321
+ M1001C322
+ M1001C323
+ M1001C324 )
KPI Class: Retainability
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes: Note that the best active set cell may change
during the call. Therefore, the object of the measurement can be different for
connection establishment (setup and access phases) and release counters (active
phase) of the same call.
Time Summary Levels: Hour, Day, Week.
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Time Summary Level notes: Note that an established call can be started and
ended in two separate measurement intervals. Therefore, the RAB Active and
RAB and DCH holding time counters stating the RAB active releases and
durations are recorded in the measurement interval during which the call was
released.
Multi RAB AMR + NRT Service
KPI NAME: RAB Drop Ratio, Multi RAB containing more than one NRT
Services, from Network Perspective
Published: This KPI is approved.
KPI ID: RAN_KPI_0031.
KPI version: 1.0a
Description: RAB Drop Ratio, Multi RAB containing more than one NRT
Services, [%] over the reporting period. Covers RAB Active Phase of a call.
This KPI is based on Service Level Measurement [2].
Note 1: For NRT RABs pre-emption is not possible.
KPI Formula:
sum ( M1001C353
+ M1001C354
+ M1001C355
100 *
+ M1001C356 )
%
sum (M1001C308
+ M1001C309
+ M1001C310
+ M1001C312)
KPI Class: Retainability
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes: Note that the best active set cell may change
during the call. Therefore, the object of the measurement can be different for
connection establishment (setup and access phases) and release counters (active
phase) of the same call.
Time Summary Levels: Hour, Day, Week.
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Time Summary Level notes: Note that an established call can be started and
ended in two separate measurement intervals. Therefore, the RAB Active and
RAB and DCH holding time counters stating the RAB active releases and
durations are recorded in the measurement interval during which the call was
released.
4.3
High Level Indicators for Usage
4.3.1
Noise floor of the System [dBm]
KPI NAME: Noise floor of the System [dBm]
Published: This KPI is approved.
KPI ID: RAN_KPI_0032
KPI version: 1.0a
Description: Average PrxNoise [dBm] of a cell over the reporting period.
This measurement is based on Cell Resource Measurement [1], where the
PrxNoise of a cell is measured.
Note: Calculation notes
When using the formula, linear scale has to be used with calculations. This
means that the dBm values in the counters must be converted to Watts and after
the calculation is done, the result must be converted back to dBms.
It is possible that the counter in the formula is not updated during the
measurement period, that is, the denominator counter is not updated. These
samples should be filtered out.
The calculation must also include a division by - 100 in order to take out the
raw counter unit value multiplication by -100.
Note 2: Pre-calculated values
The counter M1000C10 already shows the average dBm level. Therefore, the
denom counter M1000C11 is not used in the formula.
KPI Formula:
M1000C10' / - 100 dBm
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(The number - 100 in the formula represents the raw counter dBm value
correction.)
KPI Class: Usage
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
4.3.2
Average SAB Throughput [kbit/s]
KPI NAME: Average SAB Throughput.
Published: This KPI is approved.
KPI ID: RAN_KPI_0025
KPI version: 1.0a
Description: Average SAB Throughput [kbit/s] over the reporting period.
Includes both the user and signalling data.
This measurement is based on Cell Resource Measurement [1], where the
average SAB Throughput of a cell is measured.
KPI Formula:
average (
M1000C130
) kbit/s
M1000C131
KPI Class: Usage
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
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4.3.3
Allocated UL Dedicated Channel Capacity [kbit/s]
CS Voice Call
KPI NAME: Allocated UL Dedicated Channel Capacity for CS Voice
Published: This KPI is approved.
KPI ID: RAN_KPI_0014.
KPI version: 1.0a
Description: Allocated Uplink Dedicated Channel Capacity [kbit/s] for CS
Voice in Serving RNC for the reporting period. These throughput calculations
are based on resource allocation counters and do not show as such the actual
throughput but allocated capacity.
The KPI is based on Traffic Measurement [3].
Note 1: The counters in the formula include soft handover overheads.
KPI Formula:
average (4.75 * M1002C34 +
4.75 * M1002C270
+ 5.15 * M1002C35
+ 5.15 * M1002C271
+ 5.9 * M1002C36
+ 5.9 * M1002C272
+ 6.7 * M1002C37
+ 6.7 * M1002C273
+ 7.4 * M1002C38
+ 7.4 * M1002C274
+ 7.95 * M1002C39
+ 7.95 * M1002C275
+ 10.2 * M1002C40
+ 10.2 * M1002C276
+ 12.2 * M1002C41
+ 12.2 * M1002C277 ) / 360000 kbit/s
KPI Class: Usage
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
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Object Summary Level notes:
Time Summary Levels: Hour.
Time Summary Level notes:
•
The defined formula is valid for one-hour measurement periods.
•
The allocation duration counters are updated when the DCH is released.
Data Calls
KPI NAME: Allocated UL Dedicated Channel Capacity for Data Calls
Published: This KPI is approved.
KPI ID: RAN_KPI_0016
KPI version: 1.0p
Description: Allocated Uplink Dedicated Channel Capacity [kbit/s] for Data
Calls in Controlling RNC over the reporting period. These throughput
calculations are based on resource allocation counters and do not show as such
the actual throughput but allocated capacity.
These KPIs are based on Traffic Measurement [3].
Note 1: The counters in the formula include soft handover overheads.
KPI Formula:
average (56.7 * M1002C78
+ 56.7 * M1002C297
+ 64 * M1002C69
+ 64 * M1002C209
+ 64 * M1002C225
+ 64 * M1002C298
+ 128 * M1002C70
+ 128 * M1002C210
+ 128 * M1002C226
+ 128 * M1002C299
+ 384 * M1002C73
+ 384 * M1002C213
+ 384 * M1002C229
+ 384 * M1002C302 ) / 360000 kbit/s
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KPI Class: Usage
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes.
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
4.3.4
•
The defined formula is valid for one-hour measurement periods.
•
The allocation duration counters are updated when the DCH is released.
Allocated DL Dedicated Channel Capacity [kbit/s]
CS Voice Call
KPI NAME: Allocated DL Dedicated Channel Capacity for CS Voice
Published: This KPI is approved.
KPI ID: RAN_KPI_0015.
KPI version: 1.0u
Description: Allocated Downlink Dedicated Channel Capacity [kbit/s] for CS
Voice in Serving RNC for the reporting period. These throughput calculations
are based on resource allocation counters and do not show as such the actual
throughput but allocated capacity.
These KPIs are based on Traffic Measurement [3].
Note 1: The counters in the formula include soft handover overheads.
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KPI Formula:
average (4.75 * M1002C42 +
4.75 * M1002C278
+ 5.15 * M1002C43
+ 5.15 * M1002C279
+ 5.9 * M1002C44
+ 5.9 * M1002C280
+ 6.7 * M1002C45
+ 6.7 * M1002C281
+ 7.4 * M1002C46
+ 7.4 * M1002C282
+ 7.95 * M1002C47
+ 7.95 * M1002C283
+ 10.2 * M1002C48
+ 10.2 * M1002C284
+ 12.2 * M1002C49
+ 12.2 * M1002C285 ) / 360000 kbit/s
KPI Class: Usage
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes.
Time Summary Levels: Hour.
Time Summary Level notes:
•
The defined formula is valid for one-hour measurement periods.
•
The allocation duration counters are updated when the DCH is released
Data Calls
KPI NAME: Allocated DL Dedicated Channel Capacity for Data Calls
Published: This KPI is approved.
KPI ID: RAN_KPI_0017.
KPI version: 1.0p
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Description: Allocated Downlink Dedicated Channel Capacity [kbit/s] for Data
Calls in Controlling RNC over the reporting period. These throughput
calculations are based on resource allocation counters and as such are not
showing actual throughput but allocated capacity.
These KPIs are based on Traffic Measurement [3].
Note 1: The counters in the formula include soft handover overheads.
KPI Formula:
average (56.7 * M1002C81
+ 56.7 * M1002C333
+ 64 * M1002C69
+ 64 * M1002C217
+ 64 * M1002C233
+ 64 * M1002C334
+ 128 * M1002C218
+ 128 * M1002C234
+ 128 * M1002C335
+ 384 * M1002C221
+ 384 * M1002C237
+ 384 * M1002C338 ) / 360000 kbit/s
KPI Class: Usage
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes.
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
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4.4
High Level Indicators for Mobility
4.4.1
Soft Handover Success Rate [%]
KPI NAME: Soft Handover Success Ratio
Published: This KPI is approved.
KPI ID: RAN_KPI_0020
KPI version: 1.0a
Description: Soft Handover Success Rate meaning branch addition, branch
deletion or branch replacement over the reporting period in the Source Cell of
the Soft Handover.
This KPI is based on Soft Handover Measurement [5] where Active Set sizes
are measured.
KPI Formula:
sum (M1007C15
100 *
+ M1007C32)
%
sum (M1007C10 + M 1007C11 + M1007C12
+ M1007C27 + M1007C28 M100729)
KPI Class: Mobility
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
4.4.2
Soft Handover Overhead [%]
KPI NAME: Soft Handover Overhead for Area level
Published: This KPI is approved.
KPI ID: RAN_KPI_0023
KPI version: 1.0a
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Description: Soft Handover Overhead [%] on area level over the reporting
period.
This KPI is based on Soft Handover Measurement [5] where Active Set sizes
are measured.
Note 1: In the SHO Measurement the counters are both for RNC and WCELL.
This formula is purely using the cell level counters.
KPI Formula:
sum ( M1007C0 + M1007C19) *1
+ sum ( M1007C1 + M1007C20 ) * 2
+ sum ( M1007C2 + M1007C21 ) * 3
+ sum ( M1007C3 + M1007C22 ) * 4
+ sum (M1007C4 + M1007C23 ) * 5
+ sum (M1007C5 + M1007C24 ) * 6
(
− 1 ) *100 %
sum ( (M1007C0 + M1007C19)
+ (M1007C1 + M1007C20)/2
+ (M1007C2 + M1007C21) /3
+ (M1007C3 + M1007C22)/4
+ (M1007C4 + M1007C23 )/5
+ (M1007C5 + M1007C24 )/6)
KPI Class: Mobility
Target values: See Chapter 2.
Object Summary Levels: Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
4.4.3
Intra System Hard Handover Success Ratio [%]
KPI NAME: Intra System Hard Handover Success Ratio
Published: This KPI is approved
KPI ID: RAN_KPI_0021.
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KPI version: 1.0a
Description Intra System Hard Handover Success Ratio [%] for the reporting
period in the Source Cell of the Hard Handover.
This KPI is based on Intra System Handover Measurement [4] where Intra
System HHO triggering and outcome is measured.
KPI Formula:
sum ((M1008C6 + M1008C15) +
(M1008C55 + M1008C59 + M1008C63) +
100 *
(M1008C103 + M1008C107 + M10008C111))
%
sum ((M1008C4 + M1008C5)
+ (M1008C13 + M1008C14)
+ (M1008C54 + M1008C58 + M1008C62)
+ (M1008C102 + M1008C106 + M1008C110))
KPI Class: Mobility
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
4.4.4
Inter System Hard Handover Success Ratio [%]
KPI NAME: Inter System Hard Handover Success Ratio
Published: This KPI is approved.
KPI ID: RAN_KPI_0022.
KPI version: 1.0a
Description: Inter System Hard Handover Success Ratio [%] for the reporting
period in the Source Cell of the Hard Handover.
This KPI is based on Inter System Handover Measurement [6] where Inter
System HHO triggering and outcome is measured.
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KPI Formula:
sum (M1010C19 + M1010C23
+ M1010C27 + M1010C31
+ M1010C35 + M1010C57
+ M1010C61 + M1010C65
+ M1010C69 + M1010C73)
100 *
%
sum (M1010C18 + M1010C22
+ M1010C26 + M1010C30
+ M1010C34 + M1010C56
+ M1010C60 + M1010C64
+ M1010C68 + M1010C72)
KPI Class: Mobility
Target values: See Chapter 2.
Object Summary Levels: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes:
Time Summary Levels: Hour, Day, Week.
Time Summary Level notes:
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Appendix
Official KPI template
KPI NAME: Official name of the KPI.
Published: The date of publishing. If not given, then the status of the KPI is
visible. The status of the KPI is also visible in the KPI version field.
KPI ID: RAN ID of the KPI. The form is the following ”RAN_KPI_number”.
If the given value is not “RAN_KPI_number”, then the KPI is not recognised
by RAN.
KPI version: Version of the KPI.
The version includes also the “maturity mark”, that is, u mark:
1.0a = a stands for accepted KPI, meaning that it is accepted but not found in
any reporting tool.
1.0f = f stands for frozen KPI, meaning that it is accepted and found in reporting
tools but not verified.
1.0u = u stands for published KPI, meaning that it is found in a reporting tool
and verified in RAN.
Description: The official description of the KPI. The description includes also
the measurement reference Example: This KPI is based on Service Level
Measurement [2].
Note1-n: Official note fields for customer documentation.
KPI Formula: The formula given in counter numbers. This version of the
formula is the one that is used in customer documentation.
KPI Class: The KPI must belong to a KPI Class.
The Classes are: Accessibility, Retainability, Usage, Integrity, and Mobility.
Target values: See Chapter 2.
Object Summary Levels: Summary levels on reporting object scale. Based on
the target(s) for the RAN measurement(s) that provides the counters belonging
to the KPI.
Possible values: Cell, Cluster of Cells, RNC, City, and Network.
Object Summary Level notes: This field states the possible problems for a given
Object Summary level.
Time Summary Levels: Summary levels on reporting timescale. Based on the
collection periods for the RAN measurement(s).
Possible values: Hour, Day, Week.
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Time Summary Level notes: This field states the possible problems for a given
Time Summary level.
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References
[1] RNC Performance Counters: Cell Resource Measurement (dn99581291,
RN1.5.2 ed2, version 3.0; RN2.0)
[2] RNC Performance Counters: Service Level Measurement (dn99581291,
version 3.0)
[3] RNC Performance Counters: Traffic Measurement (dn99581291, version
3.0)
[4] RNC Performance Counters: Intra System Hard Handover Measurement
(dn99581291, version 3.0)
[5] RNC Performance Counters: Soft Handover Measurement (dn99581291,
version 3.0)
[6] RNC Performance Counters: Inter System Hard Handover Measurement
(dn99581291, version 3.0)
[7] RNC Performance Counters: Location Services Measurement (dn99581291
RN2.0 version)
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