03802_31_RNO
Short Description
RNO...
Description
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Radio Network Optimization Applications FAS NCS
FOX NOX MRR
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RNO – Radio Network Optimization applications
FOX FAS
NOX TET NCS
MRR
FAS – Frequency Allocation Support NCS – Neighbouring Cell Support FOX – Frequency Optimization eXpert NOX – Neighbouring Cell List Optimization eXpert MRR – Measurement Result Recording TET – Traffic Estimation Tool 03813-LZU 108 3704 Uae Rev C
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Frequency Allocation Support (FAS)
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Objectives • Improve quality of the frequency plan • Find suitable frequencies for new cells/TRXs • Uplink interference statistics
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FAS Faster frequency planning
Shorter time to market
Less effort for frequency planning
Higher C/I rate
Less dropped calls
Better speech quality
Customer satisfaction
Increased revenue
Lower O&M cost
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Work Flow using FAS
100 0
1s 3r
East West North
4 different reports
Presentation on map
OSS suggests suitable change Collects data and sends it to OSS Initiates recording
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FAS is Operated from OSS OSS initiates the BSC function Radio Interference Recording (RIR) The activities in FAS can be divided into four parts: - The recording configuration - The recording procedure - The recording evaluation - Sending data to CNA with the FAS change order.
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Recording Configuration The recording configuration consists of: • The recording session defined by a time schedule.
• The cell set, defining in which cells to record. • One or more frequency sets specifying which frequencies to measure.
• A yes/no indicator if intermediate results shall be reported after each recording period.
• A percentile value that specifies which RXLEV value to report from the recorded interference distribution.
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Recording Procedure • The measurements are made with the same resolution and range as normal RXLEV measurements • For each frequency a sample is taken once every 15 seconds. • One sample represents the signal strength during one burst. • Each frequency will be sampled on a randomly chosen (possible) channel. • Samples will only be taken on the following logical channel combinations:
• Maximum four bursts on the same channel during one SACCH period (480ms) are used for FAS measurements, irrespective of whether the channel is idle or not. • During the 15 second cycle, the first 10 seconds are used for measurements on idle channels only. • If the measurements are not completed after that, busy channels will also be used the remaining 5 seconds. The measurements are not distributed uniformly in time, but performed as fast as possible.
1TCH/F + FACCH/F + SACCH/TF 2TCH/H(0.1) + FACCH/H(0.1) + SACCH/TH(0,1)
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Recording Evaluation The results will contain: • The number of samples per measured frequency • The median interference, in RXLEV, per measured frequency • The Xth percentile value (in RXLEV) of the interference distribution per measured frequency, where X is given in the recording configuration If traffic load statistics are fetched, there will be two validity counters per cell: • The average traffic load during the recording periods. • The lowest quotient between the traffic load of an two recording periods. 03813-LZU 108 3704 Uae Rev C
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Recording configuration Parameters Parameter name
Default value
Recommended value
Value range
Unit
Percentile Value 90
90
1-100
per cent
Start Date
-
-
-
YYMMDD
Hours
-
-
00.00 - 23.59 (Maximum four intervals)
hh.mm
Repeat
Start Date Only
-
Start Date Only / Daily / Weekly / Every Two Weeks
Days
All
-
Sun - Sat
Result
Get Result After each Recording Period
-
After each Recording Period / When the Recording is Finished
Cell Set
-
-
May include cell names and/ or BSC names
Frequencies
Operator's Full Set -
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Operator’s Full Set / Cell’s Configured Freqs. / Frequency Set Slide
-
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Interaction with other functions - MRR & NCS
Useful information - Finding a new frequency - The cell set - Troubleshooting of a cell - Statistics
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Recording Capacity Resource
Capacity Description
Number of simultaneous recordings under one OSS 10/BSC Number of simultaneous recordings in one BSC
10
Number of cells in one Cell Set
2000
Number of frequencies in one recording
150
Number of stored recording results per OSS
100
Number of frequencies in a Frequency Set
150
Number of Cell Sets that can be defined
100
Number of Frequency Sets that can be defined
100
Length of one recording
273 hours
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Recordings are simultaneous if their recording Sessions overlap
After 273 hours overflow will occur for certain counters
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FAS, Enhancements
• Downlink measurements Inter Cell Dependency Matrix, ICDM • Percentage Interfered Traffic, PIT • Cell Frequency Interference Report • Two new reports for checking the validity of the measurements. One for ICDM and one for uplink measurements.
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FAS - Recording Activities
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FAS - Recording Result
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New Concepts •
ICDM - Inter Cell Dependency Matrix – Interference matrix – Shows how much one specific cell interferes other cells – Adjacent and co-channel interference
•
PIT - Percentage Interfered Traffic – Estimate of downlink interference – Calculated for all frequencies in all cells
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FAS - ICDM Settings
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FAS - ICDM Report
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FAS - PIT Settings
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FAS - System Parameters (1/3)
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FAS - System Parameters (2/3)
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FAS - System Parameters (3/3)
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FAS - Validity Reports
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Frequency Optimization Expert (FOX)
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Objectives • Improve quality of the frequency plan • Find suitable frequencies for new cells/TRXs • Uplink interference statistics
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FOX Faster frequency planning Shorter time to market
Less effort for frequency planning
Higher C/I rate
Less dropped calls
Better speech quality
Customer satisfaction
Increased revenue
Lower O&M cost
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FOX can be run in Three Different Modes
• Recording Mode Uplink and Downlink recordings, the result is presented to the user. This mode is called FAS. • Recommendation Mode FOX suggest a number of frequency reallocations, the suggestions must be accepted or discarded by the user. • Automatic Mode The reallocations will be carried out without confirmation by the user. 03813-LZU 108 3704 Uae Rev C
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FOX Main Activities
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Recording Configuration A recording configuration consists of: • A cell set • A frequency set • A time schedule • A specification if the recording should be performed on UL/DL/BL
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Recording Configuration For the Uplink measurements: • A percentile value that specifies which RXLEV to report. For the Downlink measurements: • A relative signal strength threshold for C/I. • A relative signal strength threshold for C/A. • The maximum number of test frequencies that may be added to the active mode BA lists at one time. • BA list change interval, i.e. how often the test frequencies should be changed in the active BA list.
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Recording Procedure, Uplink • The measurements are made with the same resolution and range as normal RXLEV measurements • For each frequency a sample is taken once every 15 seconds. • One sample represents the signal strength during one burst. • Each frequency will be sampled on a randomly chosen (possible) channel. • Samples will only be taken on the following logical channel combinations:
• Maximum four bursts on the same channel during one SACCH period (480ms) are used for FAS measurements, irrespective of whether the channel is idle or not. • During the 15 second cycle, the first 10 seconds are used for measurements on idle channels only. • If the measurements are not completed after that, busy channels will also be used the remaining 5 seconds. The measurements are not distributed uniformly in time, but performed as fast as possible.
1TCH/F + FACCH/F + SACCH/TF 2TCH/H(0.1) + FACCH/H(0.1) + SACCH/TH(0,1)
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Recording Procedure, Downlink The Downlink recording result is produced by the BSC function BA-list recording (BAR) A counter is incremented every time SS f,BSIC > SSserv + Relative SS Threshold for C/I
(1)
Another counter is incremented every time SS f,BSIC > SSserv + Relative SS Threshold for C/A
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ARFCN/BSIC 50/41 Serving Cell
“C”
“I” Cell B
Cell A
Parameters
Measurement Report ARFCN/BSIC - Serving Cell - 50/41
rxlev 60 54
Relative SS Threshold for C/I = -9 Relative SS Threshold for C/A = 3
Check equation (1) and (2): (1): SSBSIC = 54 > SSserv + Relative SS Threshold for C/I = 60 + (-9) = 51 => true, increment C/I counter (2): SSBSIC = 54 > SSserv + Relative SS Threshold for C/A = 60 + 3 = 63 => not true, do not increment C/A counter
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Probable Cell Name When OSS receives the recorded ARFCN/BSIC combinations FOX tries to interpret them to probable cell names. The area for which FOX searches for Probable Cell names is set by the parameter Bounding Box
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Inter Cell Dependency Matrix (ICDM) The result of the Downlink Recording is logically two ICDMs. Interfering Cells Cell A
Cell Set
Cell B
....
Cell X
Cell A
Element (C, B) contains three values: - Ne/Ntot - Na/Ntot - Ntot
Cell B Cell C
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Percentage Interfered Traffic (PIT) For a given frequency f in a given cell A, PIT is estimated by adding: a) The sum of all (non-zero) ICDM-C (A,X) matrix elements, for all cells X where f is used, where X is a cell within the same OSS as A and for which the number of counts indication is equal to or larger than Minimum number of DL samples. b) Plus the sum of all (non-zero) ICDM-A (A,X) matrix elements, multiplied with a factor, Adjacent Frequency Interference Contribution, for all cells X where an adjacent frequency to f is used, where X is a cell within the same OSS as A and for which the number of counts indication is equal to or larger than Minimum number of DL samples.
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Percentage Interfered Traffic, Compensated The ICDM element should be reduced to cater for: a) Lower traffic load in the interfering cells. b) DTX (downlink) usage in the interfering cells. c) BTS Power Control usage in the interfering cells. d) Frequency load, when synthesizer frequency hopping is used the interfering cells.
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Percentage of Interfered Traffic Cell A f1
Cell B f1
Cell C
ICDM(C,A) = 5%
ICDM(C,B) = 7%
PIT for f1 in C = 5 + 7 = 12%
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Recording Evaluation In FAS recording mode •FAS Overview Report •FAS Cell Report •FAS Cell Report Chart •FAS Overview Comparison Report •FAS Cell Comparison Report •FAS UL Data Validity Report •FAS Interference Report •FAS ICDM Probable Interfering Cell Report •FAS ICDM Report •FAS ICDM Validity Report •FAS Change Order
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In FOX Recommendation / Automatic mode • FOX Change Order Evaluation • FOX Change Order Recommendation • FOX Reallocation Log
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Reallocation Search • Find tentative Reallocation Suggestions • Reduce the set of tentative Reallocation Suggestions by removing those for which the uplink interference estimate for the candidate frequency, or the reallocating frequency, is not based on enough samples. • Reduce the set of tentative Reallocation Suggestions by removing those for which the candidate frequency does not belong to the correct Frequency Set.
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Reallocation Search (2) • Reduce the set of tentative Reallocation Suggestions by removing those for which the measured uplink interference is affected by halted cells. • Prioritize the remaining Reallocation Suggestions. • Compile the Recommendation List.
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Find Tentative Reallocation suggestions • Improve Own Uplink • Improve Own Downlink • Change Interferer
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RNO - What does FOX do? • Gives recommendation on suitable frequency reallocations (optimization) • Can automatically update the network (implementation)
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RNO - Relation between FOX and other appl. FOX
Cellular network
FAS Export Recording Definition Data Collection
FOX Algorithm
FAS Result
FOX Result
FAS Reports
FOX Reports
Change Order CNA
Implementation
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CNA Update Job
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CNA Planned Area
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RNO - FOX Overview
Result Uplink + Downlink
FOX Reallocation search
Measurements in live network
Automatic mode Suggested frequency changes
Implementation
Recommendation mode 03813-LZU 108 3704 Uae Rev C
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FOX - Reallocation Search
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FOX New Recording ICDM When Type Frequencies
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FOX - Change Order Recommendation
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FOX - Change Order Evaluation
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Table 1 Recording configuration parameters Parameter name BA List Change Interval (minutes) No. of Test Freqs. to Add at Each Interval Start Date Repeat
Default value 10
Recommended value -
Value range 10 to 1440 (24h)
Unit Minutes
5
-
1 to 32
-
Start Date Only
-
YYMMDD -
Times Days Hours
All -
-
Type
-
-
Evaluation Period
-
-
Cell Set Frequencies
user’s Full Set
-
Percentile Relative SS Threshold for C/I Relative SS Threshold for C/A Co-Freq. Interference contributors Adjacent-Freq. Interference contributors Do not Require PIT Contrib… Average Traffic Load
90 -9
-
Start Date Only / Daily / Weekly / Every Two Weeks Mon-Sun 00.00-23.59 (Maximum four intervals) FOX Recommendation / FOX Automatic After Each Day / Each recorded Week / When Recording Ready Cell names user’s Full Set / Cell’s Configured Freqs. / Frequency Set 1 to 100 -
3
-
-
dB
1st and 2nd Order Neighbours 1st Order Neighbours
-
1st Order Neighbours, 1st and 2nd Order Neighbours None, 1st Order Neighbours
-
NO
-
YES, NO
-
-
-
0 to 100
percent
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hh.mm percent dB
-
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Table 2 System parameters Parameter name Spacing Matrix Adjacent Frequency Interference Contribution Base Station Power Control Reduction DTX Interference Reduction Minimum number of UL samples Minimum number of DL samples Min. Considered ICDM element Bounding Box Path loss Per Dist Decade Sector Antenna Gain Offset Sector Antenna Gain Amplitude
Default value
Recommended value
Value range
Unit
100
-
0, 1, 2, Comb-space 0 to 100
percent
100
-
0 to 100
percent
50 500
-
0 to 100 -
percent samples
10000
-
-
samples
0.1
-
-
percent
30 31 -5 14
-
-
km dB/decade dB dB
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Table 3 Reallocation Search parameters Parameter name Reallocation Set
-
Recommended value -
Maximum Accepted DL PIT Minimum Required DL PIT Improvement Maximum Accepted DL PIT Impairment Minimum Required UL Interference Improvement Maximum Accepted UL Interference Impairment Minimum Required UL Interference Improvement when DL PIT Estimate is Incomplete Exclude BCCH Frequencies from the Reallocation Search Give Priority to Reallocation Candidates on:
5.0
-
Cell names that are included in the Cell Set 0 to 100
2.0
-
0 to 100
percent
1.0
-
0 to 100
percent
5.0
-
-
dB
2.0
-
-
dB
7.0
-
-
dB
YES
-
YES, NO
-
UL Interference
-
UL Interference Improvement, UL Interference, DL Interference Improvement first and UL Interference Improvement second, UL Interference
-
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Default value
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Value range
Unit percent
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Neighboring Cell Support (NCS).
BA-list 03813-LZU 108 3704 Uae Rev C
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Background • Handover decisions are based to measurements on neighboring cells, performed by the Mobile Station (MS) in active mode. • A list of frequencies, the active mode BCCH Allocation (BA) list, is throughout a call repeatedly sent to the MSs on the Slow Associated Control Channel (SACCH). • The MS measures signal strength and tries to decode the Base Station Identity Code (BSIC) on each frequency in the list. • The six strongest of the frequencies for which the BSIC was decoded successfully are reported back to the system in a Measurement Report. • Such a report is sent on the SACCH (uplink) once every 480 ms.
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Why NCS? • Gives the operator the support needed for optimizing cell relation data in the network in minim effort. – – – –
Needs for improvements can easily be identified Decision support is given Cells can be removed/added from/to the BA-list easily Cell relation data is optimized
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NCS Benefits Less effort to determine optimal cell relation data
High successful HO rate
Less dropped calls
Better speech quality
Customer satisfaction
Increased revenues
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Lower O&M cost
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Work Flow using NCS
• NCS is operated via OSS • Analyzes measurement reports and handover statistics •
Can add BCCHs to BA list
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Neighboring Cell Support is operated from OSS. OSS initiates the Base Station Controller (BSC) function Active BA List Recording according to the user's settings. The activities in Neighboring Cell Support can be divided into four parts: 1 the recording configuration, when the user schedules a recording, 2 the recording procedure, when the system carries out the activities specified in the recording configuration, 3 the recording evaluation, when the user requests a presentation of recording data. 4 the creation of change orders, when the user exports a change order to a planned area in CNA.
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Recording Configuration The recording configuration consists of: • A cell set, defining where to record. A cell set may contain cells from more than one BSC. • A list of test frequencies, called a frequency set, specifying what frequencies to add to the active mode BA lists. • A time schedule that defines when recordings should be made. • A relative signal strength threshold. • An absolute signal strength threshold. • The length of recording segments • The maximum number of test frequencies that may be added to the active mode BA lists at one time. 03813-LZU 108 3704 Uae Rev C
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Recording Configuration The relative signal strength threshold is related to a counter that is incremented every time SSf,BSIC > SSserv + Θrel is fulfilled. The absolute signal strength threshold is related to a counter that during the recording is incremented every time SSf,BSIC > Θabs is fulfilled.
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Recording Procedure During a recording, some general data is logged: • total recording time • total number of Measurement Reports received • average signal strength of serving cell (downlink)
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Recording Procedure The following data is recorded for each combination of frequency and BSIC: • number of times the combination occurred in Measurement Reports • average signal strength of all occurrences • number of times it was reported above the signal strength of serving cell plus the relative signal strength threshold • number of times it was reported above the absolute threshold • number of times it was the only one in the Measurement Report • number of times it was reported as the strongest, second strongest, etc. up to sixth strongest frequency/BSIC • average signal strength when reported as strongest, second strongest, etc. up to sixth strongest frequency/BSIC 03813-LZU 108 3704 Uae Rev C
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In addition, the following is recorded for each test frequency: • Total recording time with this frequency in the active mode BA list (This may differ from total recording time, because of the segmentation of the recording). • Total number of Measurement Reports with this frequency in the active mode BA list.
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Recording Evaluation Overview report • Highest percentage of undefined • Lowest percentage of defined
Detailed cell report • All data from recording
Cell report • Cell names • # reports above relative threshold • # of reports as strongest • Average SS when strongest • handover statistics (defined neighbors only)
Cell report chart
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•
Displays a group of the occurence of the ordinary BA list frequencies (or test frequencies) for a selected cell.
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Recording Configuration Parameters Parameter name
Default value
Recommended value
Value range
Unit
Relative Signal Strength
3
-
-63 to 63
dB
Absolute Signal -75 Strength
-
-110 to -48
dBm
Number of test freq. to add
-
1 to 32
-
How often BA 10 list shall change
-
10 to 1440 (24 h)
minutes
Start Date
-
-
-
YYMMDD
Hours
-
-
00.00 - 23.59 (Maximum four intervals)
hh.mm
Repeat
Daily
-
Start Date Only / Daily / Weekly / Every Two Weeks
Days
All
-
Sun - Sat
Call Set
-
-
May include cell names and/ or BSC names
Frequencies
All BCCH frequencies
-
All BCCH Frequencies / Each cell using its BA-list freq. + Neighbors Neighbors freq. / BA-list freq. + free Selection
5
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Recording Capacity Resource
Capacity Description
Number of simultaneous recordings under one OSS
64 /BSC
-
Number of simultaneous recordings in one BSC
64
-
Number of cells in one Cell Set
2000
-
Number of frequencies in one recording
No limit
It is possible to include all ARFCNs in the system
Number of Cell Sets that can be defined
100
-
Number of Frequency Sets that can be defined
100
-
Number of stored results
100
-
Duration of one recording
31 days
The time schedule in one recording configuration may be 31 days long. The recording in the BSC can not be longer than one day, which means that new BSC recordings are started each day.
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NCS Detailed Cell Report (example) (R7)
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Neighboring Cell List Optimization Expert (NOX)
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NOX - What can it be used for To find neighboring cell relations to add and remove (Optimization) To see how good the test frequency is (Supervision)
To automatically update the network (Implementation)
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NOX - Function modes • Recording level Present result in reports (NCS)
• Recommendation level Give recommendations on neighboring cell relations based on the recording result
• Automatic level Based on the recordings, NOX will decide about neighbor cell relations and implement the changes automatic
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Algorithm • • • • •
Active BA list recordings Handover statistics Network configuration data Control parameters Inputs specified by the user
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Active BA list recordings • The minimum required measurement reports for a cell in order for it to be regarded as a candidate for evaluation of additions, MinCountsDL. • The total number of measurement reports received in a cell when a certain frequency was included in the BA list, MRtot. • The number of measurement reports received when a certain frequency/BSIC combination was reported stronger than the sum of the serving cell signal strength and the relative signal strength threshold. This is denoted MRrel
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Statistics (1) • The number of handover attempts from one cell to another, HOVERCNT. • The number of successful handovers, HOVERSUC . • The number of reversed handovers. This indicates the number of times the MS has been put back on the old channel during the recording period, HORTTOCH.
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Statistics (2) • The number of dropped TCH/fullrate connections, TFNDROP. • The number of dropped TCH/halfrate connections, THNDROP.
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Network Configuration Data • Current contents of the active mode BA list and neighboring cell relations. • The BSIC of each cell. • The system type of cells within the network (GSM 900, GSM 1800 or GSM 1900). • The cell type, either omni cell or sector cell. • The geographical location of the base station. • The output power of the base station.
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Control Parameters • Thresholds in the algorithm • Limitations of the maximum number of frequencies in the BA list.
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Inputs Specified by the user • The user can specify whether removals, additions or both shall be allowed. • The barring matrix. The user can specify which cell relations that are allowed to be modified in the network.
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Algorithm Output • Change Order Recommendation • Change Order Evaluation • Reallocation Log
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Recording Mode • The recording configuration, when the user schedules a recording. • The recording procedure, when the system carries out the activities specified in the recording configuration. • The recording evaluation, when the user requests a presentation of recording data. • The creation of change orders, when the user exports a change order to a planned area in CNA.
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NOX, Recommendation Report
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NOX, Reallocation Log
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Main Controlling Parameters Parameter name stsCollectionPeriod pathLossPerDistDecade sectorAntennaGainOffset sectorAntennaGainAmplitude networkUpdateTime
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Installation default 15 31 -5 14 00:45
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Unit days dB/decade dB dB hh:mm
84 (104)
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Recording Configuration Parameters Parameter name Relative Signal Strength Absolute Signal Strength Number of test freq. to add Change intervall of BA list Start date Hours Repeat
Default Value 3
Value Range -63 to 63
Unit dB
-75
-110 to –48
dBm
5
1 to 32
-
10
10 to 1440
minutes
Start date only
yymmdd 00.00 – 23.59 hh.m Start Date Only/Daily/Weekly/ Every Two weeks Mon-Sun May include cell names and/or BSC names All BCCH frequencies/Each Cell using its BAlist freq./ BA-list freq + Neighbours Neighbours freq./BA-list frequency+ free Selection
Days Cell Set
All -
Frequencies
All BCCH frequencies
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Algorithm Parameters Parameter Name AddShort AddLong AddShortDB AddLongDB RmvShort RmvLong RmvShortDB RmvLongDB Length LengthDB MaxBAList MinCoutsDL CellHOVERCNT
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Default Value 500 1000 100 200 10 100 5 50 15 5 32 10000 1000
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Value Range 0-100.000 per 0-100.000 per 0-100.000 per 0-100.000 per 0-100.000 per 0-100.000 per 0-100.000 per 0-100.000 per 0-32 0-32 32 0-100.000 per 0-100.000 per
100.000 100.000 100.000 100.000 100.000 100.000 100.000 100.000
100.000 100.000
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Measurement Result Recording (MRR)
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Purpose of MRR • Supervision of the network performance • Troubleshooting of the network • Comparison of the network performance before and after a change is made to the network
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The measured radio characteristics are: • • • •
Signal strength in both Uplink (UL) and Downlink (DL). Signal Quality in both UL and DL. Timing Advance (TA). Power level used by the MS and Power reduction of the BTS. • UL and DL Pathloss.
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Recordings can be controlled in the BSC or in OSS. • In BSC MRR is operated directly by BSC commands. • In OSS MRR is an application in the Radio Network Optimization (RNO) framework. Cell names and cell data are fetched from Cellular Network Administration (CNA)
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MRR collects data from Measurement Results • • • • • • •
UL RxLev (0,...,63 GSM or -110,...,-47dBm). DL RxLev (0,...,63 GSM or -110,...,-47dBm). UL RxQual (0,...,7 GSM). DL RxQual (0,...,7 GSM). TA (0,...,219 GSM). MS Power level (0,...,39 dBm). BTS Power reduction (0,-2,...,-28,-30 dB).
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MRR separately calculates and accumulates counters for two other radio characteristics • UL Pathloss in dB (30,...,153 dB) • DL Pathloss in dB(30,...,190 dB)
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MRR Reports • • • • • • • •
Overview Report Top Ten Chart Overview Histogram Cell Histogram Comparison Report Comparison Chart Cell Comparison Histograms Trend Report
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GPRS Impact
The introduction of GPRS in a network has no effect on MRR. MRR records Measurement Results received from conventional circuit switched MS connections only. No data are recorded for GPRS connections.
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Flow start
Creating a cell set Performing an MRR recording Map Overview Report Top Ten Chart Overview Histogram Cell Histogram
Analyzing the result using MRR reports Changing something in the Network (not performed by MRR) Performing an MRR recording
Map Comparison Report Comparison Chart Cell Comp. Histogram
Verifying that the change increased the quality 03813-LZU 108 3704 Uae Rev C
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Perform regular recordings for a part of the network that includes up to 200 cells, and run the recordings during busy hour everyday for a few days. Get the results after the recording is done.
General Overview
Detailed Analysis
Open an MRR Overview Histogram to get a general overview of speech quality.
Open an MRR Overview Report to show the UL and DL quality in the cells. Open an MRR Top Ten Chart to show the 10 best or 10 worst cells. Open an MRR Cell Histogram for cells that require further investigation
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Value ranges and default values Parameter name Start date Repeat Record Times Days Hours Cell Set Getting Results Recording Thresholds
Default value
Value Range
Unit
Start day only Start Date Only / Daily / Weekly / Every Two Weeks 1 to 9999 Free selection Mon-Sun / Weekends / Working days 00.00-23.59 (Maximum four intervals) May include cell names and /or BSC names When all When all periods are done / After periods are each period, Save results done separately / After each period, Accumulate Results None None / Rxqual UL 0-7 / Rxqual DL 0-7 / Rxlev UL – 110 to – 47 / Rxlev DL –110 to –47 / TA / Type 1 / Type 2 / Type 3
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yymmdd hh.mm -
GSM and / or dBm
97 (104)
Recording Capacity Resource Number of simultaneous Recordings under one OSS Number of simultaneous Recording Individuals in one BSC Number of cells per Recording Individual Number of Recording Individuals active in 1 cell Number of cells in one cell set Number of cell sets defined Number of cells per Recording Activity Number of cell sets per Recording Activity Number of stored results Number of Recording Periods per day Minimum separation between adjacent Recording Periods Duration of one Recording Period Duration of one Recording Individual in BSC
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Capacity 10/BSC 10 512 1 2000 100 2000 1 100 at least 4 15 min 24 hours from 1 min to 168 hours (1 week)
98 (104)
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MRR - Data correlation • •
Two recording thresholds - to achieve correlation of radio characteristics Examples: – RxLev_DL > -85 dBm and RxQual_DL > 5 – Find at which distance from the BTS interference occurs – Detection of too high BS power – Poor coverage (shadowing)
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MRR - Correlation (1/4)
UL, DL, UL/DL
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MRR - Correlation (2/4)
UL, DL, UL/DL
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=, =
101 (104)
MRR - Correlation (3/4)
UL, DL, UL/DL
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=, =
102 (104)
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MRR - Correlation (4/4)
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Table 4 Recording capacity Resource Number of simultaneous Recordings under one OSS Number of simultaneous Recordings in one BSC Number of cells in one Cell Set Number of frequencies in one Recording Number of stored Recording results per OSS Number of frequencies in one Cell Set Number of Cell Sets that can be defined Number of Frequency Sets that can be defined Length of one Recording
Capacity 10/BSC
Description Recordings are simultaneous if their Recording Sessions overlap
10 2000 150 100 150 100 100 273 hours
After 273 hours overflow may occur for certain counters
Length of an Evaluation Period 31 days Number of rows in an ICDM 2000 Number of elements in a given row of an 2000 ICDM Number of stored ICDM 5 Number of possible elements in a Barring 1000 Matrix Number of simultaneous FAS/FOX 1 Recordings in a cell (1) Note that if NCS, NOX or TET is used in a cell, it is not possible to run FAS/FOX at the same time
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