Radio Measurement Statistics

8/11/2019 Radio Measurement Statistics

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y i n g o f t h i s

d o c u m e n t , u s e a n d c o m m u n i c a t i o n o f i t s c o n t e n t s

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FUNCTIONAL FEATURE DESCRIPTION

Radio Measurement Statistics (RMS) - MAFA in Release B7

This document covers the following features:

62 60 84 Radio Measurement Statistics (RMS)

62 60 86 Mobile Assisted Frequency Allocation (MAFA)



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Contents

1. FOREWORD ...................................................................................................................................3

2. REFERENCES.................................................................................................................................3

3. ACRONYMS ....................................................................................................................................3

4. INTRODUCTION .............................................................................................................................4

5. ABSTRACT......................................................................................................................................5

5.1 Need for Radio Measurements.............................................................................................. 5

5.2 Alcatel implementation of the need in BSS release B7 .........................................................6

5.3 Benefits of the RMS...............................................................................................................7

5.4 Hardware coverage ...............................................................................................................8

6. RMS DETAILED FEATURE DESCRIPTION...................................................................................9

6.1 Introduction............................................................................................................................ 9

6.2 Templates ............................................................................................................................10

6.3 RMS jobs outputs ................................................................................................................11

6.3.1 Matrixes ..................................................................................................................11

6.3.2 Vectors....................................................................................................................12

6.3.3 Simple indicators.....................................................................................................12

6.4 RMS jobs activation process ...............................................................................................14

6.4.1 RMS with the OMC-R .............................................................................................15

6.4.2 RMS with the OMC-R and NPA.............................................................................. 16

6.4.3 RMS with the OMC-R, NPA and RNO....................................................................17

7. RMS REPORTS.............................................................................................................................18

7.1 Presentation......................................................................................................................... 18

7.2 File format............................................................................................................................ 19

8. USING RMS OUTPUTS FOR OPERATORS DAILY JOB.............................................................20

8.1 Usage for Radio Network Planning...................................................................................... 20

8.2 Usage for Radio Network Optimization................................................................................208.3 Usage for Network troubleshooting ..................................................................................... 21

9. CONCLUSION...............................................................................................................................21



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1. FOREWORD

It is assumed that the reader has basic knowledge of radio measurements defined in GSM 5.08.

2. REFERENCES

[1] TS GSM 04.08 V6.2.0 Mobile radio interface; Layer 3 specification

[2] TS GSM 08.58 V5.3.0 BSC-BTS interface; Layer 3 specification

[3] 3DC 21076 0005 TQZZA EVOLIUM™ Radio Solutions - A1353 RA OMC-RProduct Description

[4] 3DC 21119 0001 TQZZA EVOLIUM™ Radio Solutions - A956 RNO ProductDescription

3. ACRONYMS

A-bis Telecommunication Interface between BSC and BTS

ARFCN Absolute Radio Frequency Channel Number

BCCH Broadcast Control Channel

BFI Bad Frame Indicator

BS Base Station

BSC Base Station Controller

BSS Base Station System

BTS Base Transceiver StationFER Frame Erasure Rate

GPRS General Packet Radio Service

GSM Global System for Mobile communication

HO Handover

HW Hardware

MAFA Mobile Assisted Frequency Allocation

MS Mobile Station

MSC Mobile services Switching Center

NPA Network Performance Analyzer tool (OMC-R option)

O&M Operation and MaintenanceOMC-R Operation and Maintenance Center-Radio

PDCH Packet Data Channel

QoS Quality Of Service

RMS Radio Measurement Statistics

RNO Radio Network Optimization tool (A956)

RNP Radio Network Planning

RXLEV Reception Level

RXQUAL Reception Quality

SACCH Slow Associated Control Channel



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SDCCH Stand Alone Dedicated Control Channel

SW Software

TA Timing Advance

TCH Traffic Channel

TRX Transceiver

4. INTRODUCTION

This document deals with the features “Radio Measurement Statistics (RMS)" and "Mobile Assisted

Frequency Allocation (MAFA)" introduced in the BSS release B7.

The scope of the present document is hereafter detailed :

• In section 5, an abstract shows the benefits brought by the feature,

• In section 6, the services brought by the RMS feature are highlighted. Section 6 also details the

RMS job activation process. Impacts on the ALCATEL tools (NPA and RNO) are also described,

• In section 7, the RMS output file format and possible reports are described,

• In section 8, examples of RMS usage in the operators organization are given,

• Section 9 is the document conclusion.



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5. ABSTRACT

Radio Measurements are of prime importance for operators, allowing them to constantly check the

Quality of Service (QoS) and then tune the various network parameters to optimize this QoS.

Traditionally, these measurements were obtained through measurement campaigns realized on the

field by teams of technicians using appropriate tools: trace mobiles, protocol analyzers,...

With the proposed feature, most of these measurements are now available directly from the network

itself, providing instantly the following advantages:

• exhaustiveness: measurements are constantly available for any area in the network, for any

period of time; no need to decide a priori which area has to be measured;

• flexibility: no need to plan in advance measurement campaigns depending on measurement

equipment or staff availability; results are available at any time; it is possible to focus on demand

on any aspect of measurement results

This feature relies on:

• appropriate software in the BTSs and OMC-R, part of release B7 delivery

• use of MAFA (Mobile Assisted Frequency Allocation) feature on mobile: this ETSI standardized

feature, will progressively be implemented in new generations of commercial mobile phones,

allowing each mobile in the network to report measurements corresponding to real operation

conditions.

5.1 Need for Radio Measurements

Each and every mobile operator needs to assess the Quality of Service (QoS) of his network. A good

QoS is not just a differentiating element for one operator compared to its competitors, it is also a way

to ensure maximum airtime duration.

Ensuring a good QoS is made on 3 main keys following:

• Call accessibility to ensure optimal coverage

• Call retainability to ensure a minimum number of call drops

• Voice quality to ensure a good MS user perception



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In order to measure these different factors, different sources of measurements are available for

operators:

• Air interface measurements, with trace mobiles and GPS positioning. These measures are very

exhaustive, but they are limited to a reduce set of cells. They are more dedicated to

troubleshooting issues or benchmarking issues, but cannot be reasonably performed on the

whole network every day.

• Abis measurements. By using protocol analyzers connected physically on one or more Abis

interfaces (depending on the protocol analyzer performances), the operator can retrieve useful

statistics to ensure good radio conditions and calls behavior. It is however not imaginable that

these kind of measurements could be performed every day, on the whole network, due to the big

number of protocol analyzers that would be required and the corresponding number of post-

processing tools.

The result of these statistics are usually dedicated to planning and optimization teams, they have a

limited interest for exploitation teams which more focus on supervision aspects.

These statistics measure the radio conditions of the calls (RxLev, RxQual, Power control settings,

path balance, interferences, etc…). As good the frequency planning of a GSM network has a direct

impact on the QoS, operators have to look particularly at radio interferences and check how to

optimize the frequency plan in order to limit them. This means looking at the radio spectrum in order

to find "clean" frequencies that could be used to replace interfered ones, for each and potentially

every cell of the network.

5.2 Alcatel implementation of the need in BSS release B7

Raw information corresponding to these measurements is in fact naturally available in the BTSs:

handover, power control and various other algorithms are using information on radio conditions. This

information is present in the measurement reports exchanged between the Mobile Station (MS) and

the BTS.

The principle of the proposed feature is then to collect this information from the system in order to

avoid the need for external HW (protocol analyzer, drive tests systems, etc…).

This information will be collected in the OMC-R. Considering the huge amount of data generated by

all individual calls, statistics will be computed at the BTS level and then sent through the BSC to the

OMC-R, according to the generic process used for PM reporting, this is why the Radio Measurement

Statistics (RMS) will appear as a new PM type in B7.



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Moreover, the statistics can be used as is, meaning no further post-processing (designed by an

expert) would be needed.

In order to help also the operator find "clean" frequencies for better frequency planning, the RMS will

also provide information based on the MAFA feature. MAFA is a standardized GSM feature that

provides a way for the system to ask each MS to measure extra-frequencies (frequencies of non-

neighbor cells). MAFA mobiles are foreseen in mid-2001. MAFA can also be used to check

interferences from non-neighbor cells.

The RMS measurements are triggered at the OMC-R level, with some preconditions that inform the

BTS how to compute the different statistics. A RMS job can be defined at cell level (punctual job,

limited to 40 cells per BSC), or for the whole BSC (permanent job, no limit in terms of number of

cells). The job parameters are stored through a template. The operator can define up to 16

templates, and apply its preferred template for each cell. For example, RMS measurements could

have different parameters for dense urban cells and rural cells.

A template is composed of 54 parameters. The OMC-R provides all facilities to tune these different

parameters, for each template. These parameters are usually called thresholds; they are described

later in the present document.

5.3 Benefits of the RMS

As written previously, this feature is designed to make far easier the network radio planning and

optimization by providing the operator with useful statistics on reported radio measurements.

In fact these statistics give directly the real cell characteristics by taking into account the MS

distribution.

Thanks to this feature, the operator is able to:

• detect interfered frequencies,

• assess the quality of the cell coverage,

• detect and quantify cell unexpected propagation,

•

assess the traffic distribution in the cell from statistics on reported neighbor cells,• evaluate the voice quality in the cell,

• etc.

It shall be noted that this measurement type could replace the current Type 11

(RTCH Measurements Observation). It brings the following advantages:

• smaller report files,

• report files have always the same maximum length whatever the measurement duration is,

• permanent job facility.



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Availability of these statistics bring cost savings for the operator due to less needed manpower to

collect the data, in combination with ease for daily network wide collection.

5.4 Hardware coverage

The statistics are based on the measurements performed at the BTS and the MS side, only on TCH

channels. They are supported by all the BTS generations, except BTS G1.

Every existing Mobile Station (MS) is able to provide RMS whereas, for MAFA, specific mobiles

supporting this standardized GSM feature are needed. It is thus the responsibility of the operator to

push for a good penetration of MAFA mobiles in its network to benefit from this feature.



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6. RMS DETAILED FEATURE DESCRIPTION

6.1 Introduction

A new BSS raw measurement type is defined: “Radio Measurements Statistics” (RMS).

The operator can trigger this measurement type from the OMC-R on a per cell basis for a given

duration (normally more than one hour). Reporting period shall be provided from one hour to 24

hours.

During the observation period, the BTS stores all the requested statistics results reported by the

mobiles or measured by the BTS on TCH. At the end of the observation period, the BTS builds a

report (binary files) and sends it to the OMC-R.

In addition to this, it is possible during the observation period to apply the “Mobile Assisted Frequency

Allocation” (also called MAFA or “Extended Measurement Reporting”).

This procedure consists in sending only once per mobile an “Extended Measurement Order” (also

called EMO) so that they take one SACCH multiframe to perform measurements on specific

frequencies and that they report these measurements via the EXTENDED MEASUREMENT

REPORT message.

The MAFA procedure is totally included in the RMS job. The statistics related to MAFA will be

collected in the BTS and integrated to the RMS results.

The RMS can be classified in the following way :

• Radio related statistics reported per TRX

• on neighbor cells (C/I)

• on MAFA frequencies (C/I)

• on downlink and uplink quality & level

• on number of consecutive bad speech frames (BFI)

• on Radio Link Counter (UpLink only)

• on Path Balance

• on Timing Advance

• on Power and number of channel seizures

• Voice quality statistics reported per TRX

• 9 Voice quality indicators, computed from analysis of RxLev, RxQual and FER.



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6.2 Templates

The template contains the job parameters. It tells the system how to compute the statistics by

defining thresholds. For example, RMS provides a facility to obtain the distribution of the RxLev (in

uplink or downlink). This vector represents the number of measurement reports for which the value

of the RxLev is within different intervals (also called RxLev bands), for each TRX. The interval

bounds are defined by thresholds, which are themselves defined in a template. Depending on the cell

characteristics, the operator could apply different thresholds. For example, it is interesting to

associate to a rural cell in coverage limit, intervals that would provide an accurate computation of the

number of measurements in low values of the RxLev, whereas, for a micro cell, it would make more

sense to look accurately at higher levels distribution.

Template contents (each template is composed of 54 parameters):

Parameter Name Based on Ranges / Number of Values

MEAS_STAT_LEV RxLev 9 values from -109 dBm to -47 dBm (1 dB

step)

MEAS_STAT_BFI Bad Frame Indicator (BFI) 9 values from 1 to 24 (step 1)

MEAS_STAT_CI C/I (difference vs. RxLev serving and

RxLev neighbor)

9 values from -63 dB to 63 dB (1 dB step)

MEAS_STAT_S Radio Link Counter S 9 values from 1 to 127 SACCH multiframes

(step 1)

MEAS_STAT_PATH_BALANCE Path balance 9 values from -109 dBm to 109 dBm (1 dBstep)

EN_BALANCED_CI boolean to take care of Power Control

for C/I computation

0 or 1

Voice Quality Configuration

VQ_AVERAGE See1

one value from 1 to 128 SACCH

multiframes

VQ_RXLEV RxLev one value from -47 dBm to -110 dBm (1 dB

step)

VQ_RXQUAL RxQual one value from 0.0 to 7.0 (step 0.1)

VQ_RXQUAL_VS_RXFER RxQual, FER one value from 0.0 to 7.0 (step 0.1)

VQ_GOOD_RXFER FER one value from 0.0% to 20.0% (step 0.1%)

VQ_BAD_RXFER FER one value from 0.0% to 20.0% (step 0.1%)

1 Voice Quality statistics are based on non-sliding averages of RxQual, RxLev measurements on both paths

and FER measurements on uplink, the VQ_AVERAGE parameter correspond to the averaging window size.



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Parameter Name Based on Ranges / Number of Values

VQ_INTF_THRESHOLD one value from 0% to 100% (step 1%)

VQ_FER_THRESHOLD one value from 0% to 100% (step 1%)

6.3 RMS jobs outputs

RMS jobs outputs can have different forms (matrixes, vectors or simple indicators). They correspond

to the statistics extracted from the MS (downlink) and BTS (uplink) measurement reports. They are

computed according to the template parameters associated to each cell.

6.3.1 Matrixes

• RxQual/RxLev matrix in uplink (reported per TRX)

Number of measurement reports per RxLev interval (MEAS_STAT_LEV ) and RxQual interval2,

the average value of the MS Power level and the average Timing Advance (TA) are also

provided

• RxQual/RxLev matrix in downlink (reported per TRX)

Number of measurement reports per RxLev interval (MEAS_STAT_LEV ) and RxQual interval

(see note2), the average value of the BS_TXPWR level and the average Timing Advance (TA)

are also provided

• BFI/RxLev matrix in uplink (reported per TRX)

Number of measurement reports per BFI interval (MEAS_STAT_BFI ) and RxLev interval

(MEAS_STAT_LEV )

2 Since only 8 values (from 0 to 7) of RxQual are available through the GSM system, the intervals correspond

to integer values with a step of 1 (0 to 1, 1 to 2, …, 6 to 7).



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6.3.2 Vectors

• C/I3 vectors (reported per TRX)

Neighbor cell based C/I vector (number of measurement reports per C/I interval(MEAS_STAT_CI )

• EMO (MAFA frequencies) based C/I vector (reported per TRX)

Same definition as above, frequencies identified by their ARFCN

• Radio Link Counter S vector (reported per TRX)

Number of measurement reports per Counter S interval (MEAS_STAT_S )

•

Path Balance vector (reported per TRX)

Number of measurement reports per Path Balance interval (MEAS_STAT_PATH_BALANCE )

PathBal = (RxLev_UL - MS_TXPWR) - [ RxLev_DL + (BTS_Max_Output_Power - 2*BS_TXPWR) ]

6.3.3 Simple indicators

• Voice Quality indicators (reported per TRX)

• Number of calls with DL/UL interference (good RxLev, bad RxQual)

• Number of calls with DL/UL bad coverage (bad RxLev, bad RxQual)

• Number of calls with DL/UL undefined (no major cause)

• Number of calls with UL bad/good FER

• Number of calls with Abnormal bad FER (good RxQual & bad FER)

A single call is identified at its end or after an intracell or intercell handover. Then, the corresponding

number of measurement reports is identified for this call in order to compute the above indicators.

3 C/I stands for Carrier over Interferer. It corresponds to the difference between a serving cell RxLev and each

of its neighbor RxLev. This difference is used for frequency plan computation, to limit the interferences by

constraining a frequency gap between a cell and its neighbors BCCH. The mobile receives the signal from

many BCCH frequencies. On a given geographical position, it will be connected to a serving cell and will report

the RxLev of the 6 best neighbors. For a given neighbor, the assumption is that the received RxLev would be

the same whatever the neighbor BBCH frequency is. Thus, depending on the difference between the serving

cell RxLev and the considered neighbor (C/I), a minimum frequency gap between the 2 cells BCCH would be

needed. This gap could be 0 (both cells can use the same BCCH frequency because the difference value is

very high), it could be 1 because there is a medium interference (difference value is medium) or it should be 2

because there is a high interference ( difference value is too small).



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6.4 RMS jobs activation process

Depending on which optional elements of the Alcatel BSS offer the operator owns, different

possibilities are available to configure and use RMS.

The job activation process consists in the following phases:

1. Define the job measurement period, which is a contiguous period of the day (for example, from

7:00 to 14:00). During the job period, no modification can be done on the job parameters.

2. Assign per cell:

• the template to be used (facility are offered by the OMC-R or RNO for massive assignment)

• whether MAFA measurements should be performed

• the MAFA frequencies if previous bullet is true

At the end of the job, the data is available in the OMC-R through binary files, as for any other

permanent PM job. The OMC-R does not provide any display of the job results, such display is

available through NPA4 and RNO

5, as explained in the following chapters.

4 NPA is the Alcatel Network Performance Analyzer. NPA is an option of the A1353 RA OMC-R

5 RNO is the Alcatel Radio Network Optimization tool, for Alcatel BSS equipment



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6.4.1 RMS with the OMC-R

The OMC-R operator defines the RMS job parameters (i.e. the 54 parameters) from the OMC-R

MMI. There is one job per day and per BSC and all the BSC of the OMC-R can have a job activated

at the same time in order to compute full network statistics. The OMC-R operator has all the facility to

configure:

• the template definitions (different thresholds). Up to 16 different templates can be used,

• the preferred template to be used for each cell,

• the frequencies to monitor through MAFA measurements for each cell.

The output of the job is a binary file per BSC. Its structure is described in paragraph 7.1.

Figure 1- RMS with the OMC-R



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6.4.2 RMS with the OMC-R and NPA

Since RMS measurements are available as new PM, they can be stored in NPA, avoiding the need

for the operator to write a post-processing tool of RMS outputs. NPA is able to store RMS jobs for 5

consecutive days. NPA provides reports based on the RMS results, as well as warning reports on the

Path Balance.

Figure 2 - RMS with the OMC-R and NPA

See paragraph 7.1 for report samples.



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6.4.3 RMS with the OMC-R, NPA and RNO

If RNO is used in the operator’s GSM network, it will deal directly with templates definitions, MAFA

frequencies definitions, and all the RMS outputs will benefit to RNO.

RNO provides powerful reports based on RMS results (See paragraph 7.1 for report samples),

facility to correlate RMS results and other QoS indicators or to correlate them with changes on the

network (new frequency or neighborhood plan, parameters tuning, etc...).

RNO can generate an experience matrix from RMS measurements for the frequency planning tool,

and can recommend frequency changes thanks to MAFA results availability. The experience matrix

is mandatory for frequency plan computation, since it is measured in the real network and not issued

from theoretical propagation algorithms that are not always valid, especially in dense urban areas.

Interference detection is empowered in RNO diagnosis module thanks to RMS C/I matrixes.

RNO is able to export RMS reports in Microsoft Excel for further post-processing.

Q u a l 0

Q u a l 2

Q u a l 4

Q u a l 6

-47<x <-53

-53<x <-60

-60<x <-66

-66<x <-72

-72<x <-79

-79<x <-85

-85<x <-91

-91<x <-97

-97<x <-104

-104<x<-110

ULRxQual

ULRxLev

DL-TimingAdvance

7.5-9.0

6.0-7.5

4.5-6.0

3.0-4.5

1.5-3.0

0.0-1.5

Figure 3 - RMS with the OMC-R, NPA and RNO



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7. RMS REPORTS

After notification on availability of RMS result reports, the OMC-R collects them from the BSSs. The

reports are provided in form of one binary file per BSC. Reports are then collected by NPA for

presentation and access by RNO. They could also be used by any other in-house post-processing

system.

7.1 Presentation

RMS reports are provided by NPA and RNO. Some report examples are shown in the figures below.

Q u a l 0

Q u a l 2

Q u a l 4

Q u a l 6

-47 < x < -53

-53 < x < -60

-60 < x < -66

-66 < x < -72

-72 < x < -79

-79 < x < -85

-85 < x < -91

-91 < x < -97

-97 < x < -104

-104 < x < -110

UL RxQual

UL RxLev

DL - Timing Advance

7.5 -9.0

6.0 -7.5

4.5 -6.0

3.0 -4.5

1.5 -3.0

0.0 -1.5

This report represents a matrix

report that provides the

average Timing Advance per

RxLev band and RxQual

interval. Such a report could

highlight resurgences for

example.

<DL RxQual>

0

20

40

60

80

100

120

140

-47 <

x < -

53

-53 <

x < -

60

-60 <

x < -

66

-66 <

x < -

72

-72 <

x < -

79

-79 <

x < -

85

-85 <

x < -

91

-91 <

x < -

97

-97 <

x < -

104

-104

< x <

-110

0

0.5

1

1.5

2

2.5

Samples

Average

This report shows the

distribution of the RxQual per

RxLev band (number of

samples on the left and

RxQual average on the right).



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This report is an example of a

3D representation that could

be obtained from a RMS

matrix. It shows the BS power

per RxLev band and RxQual

interval.

7.2 File format

Reports are provided in a directory of the OMC-R. External applications can read the report files or

retrieve them by ftp transfer.

RMS results are composed of one binary file per BSC (PM Type 31). The file contains one block per

cell, the following figure summarize the different blocks contents.

Neighbor cells Block Neighbor cells Block

EMO freq. Block EMO freq. Block

TRX Block TRX Block

.

.

.

Cell Block Cell Block

Neighbor cells Block Neighbor cells Block

EMO freq. Block EMO freq. Block

TRX Block TRX Block RMS job

parameters

repetition

+ cell Id.

TRX Id. +

TRE Band +

job validity flags

+ measurements

TRX Id. +

Neighbor cell Id. +

C/I values

TRX Id. +

MAFA freq. ARFCN +

C/I values

Figure 4 - RMS file structure



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8. USING RMS OUTPUTS FOR OPERATORS DAILY JOB

8.1 Usage for Radio Network Planning

The Radio Network Planning activity needs a lot of Radio Measurements coming from the field.

Firstly, they are used to calibrate the propagation models, secondly, RNP databases (topographic

and morphostructure databases) are not adapted to very dense areas. Those measurements are

essential for an optimal network planning and thus, an optimal frequency planning.

Thanks to C/I measurements provided by RMS, it is possible to compute an "experience matrix" by

deducting recommended frequency gaps between 2 cells from the RMS outputs in order to constraint

efficiently the frequency planning tool which disposes, usually, only of a theoretical "interference

matrix".

Thanks to EMO (MAFA) C/I matrixes, it is possible for the frequency planning tool to find "clean"

frequencies directly from the field. Every Mobile Station supporting MAFA acts as a potential

spectrum analyzer and provides outstanding information on the radio conditions, for each single cell.

8.2 Usage for Radio Network Optimization

The RMS outputs are especially designed for network optimization activities. The following table

shows some example of usage of the different RMS outputs.

RMS output type Usage for optimization

RxQual/RxLev matrixes • Identify resurgences, coverage holes and

interferences

• Assess Power Control algorithms tuning

• Assess HO on quality tuning

• Assess HO on distance tuning

C/I vectors (neighbors and MAFA) • Identify interferences from neighbor and

non-neighbor cells

• Correlate standard QoS indicators (call

drop rate) with interference on the field

• Ask the system to help you to find clean

frequencies

Radio Link Counter S stats • Identify coverage holes and correlate this

with standard QoS indicators

• Identify very strong interference that



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0 0 0 1 4 0 0 0 4 ( 9 0 0 7 ) A 4

RMS output type Usage for optimization

prevents the BTS to talk to the MS

Path Balance vector Ensure good setting of BTS power

transmission level and power control settings

BFI and voice quality indicators Ensure good QoS with an end user

perception

Aggregations and correlations of the different outputs provided through RMS will also provide

indication on the network radio quality.

8.3 Usage for Network troubleshooting

Although not designed especially for network troubleshooting, some RMS outputs could pinpoint

system problems.

For example, a bad path balance vector could result from cable or antenna problems, or from a bad

cable plugging (inversion of TX/RX or inversion of sectors).

Coverage hole or interferences can be due to bad antenna azimuth (extracted from various

observations; ex: sudden decrease of average downlink level over a period of time).

9. CONCLUSION

RMS is the ultimate feature for optimization that could be expected from a BSS system. Thanks to

results availability each day on the whole network, Abis traces could be limited to troubleshooting,

and drive tests could be limited to troubleshooting and benchmarking. There is no more need to use

these costly (in terms of manpower and equipment) traces for regular network monitoring.

MAFA is also an outstanding feature for frequency planning and interference detection, which are

critical steps to obtain a good network, for the total satisfaction of the subscribers and for an optimal

Airtime consumption.

End of Document

Documents

Radio Measurement Statistics