Doc #: E/ANPD/RFO/002 E/ANPD/RFO/002
Issue # 1
Title: Paging analysis, LAC designing, BSCCommissioning, Site re-parenting from Optimization Perspective Date of Initial Issue: 01/09/2005 01/09/2005
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STANDARD OPERATING PROCEDURE BSS Planning Issue ssu es from f rom Optimiza pti mizatio tion n Perspective
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Doc #: E/ANPD/RFO/002
Issue # 1
Title: Paging analysis, LAC designing, BSCCommissioning, Site re-parenting from Optimization Perspective Date of Initial Issue: 01/09/2005
Rev:
Document Name
Document
Versio n #
BSS Parameters
Draft 1
Version 001
PTML Confidential
Optimization
Date of Rev:
Prepared by
Ahmed Kamran
Date of Issue 01-09-2005
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1.
Doc #: E/ANPD/RFO/002
Issue # 1
Title: Paging analysis, LAC designing, BSCCommissioning, Site re-parenting from Optimization Perspective Date of Initial Issue: 01/09/2005
Rev:
Date of Rev:
Document Approval Matrix:
Ap pr ov ed b y Ali Ahmed
Rehan Ahmed Jafar Khalid Aslam Khan
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Desig nat io n National Manager RF Optimization National Manager BSS Planning GM Access Network Planning & Development VP Engineering
Sig nat ur e
Date of Ap pr ov al
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Doc #: E/ANPD/RFO/002
Issue # 1
Title: Paging analysis, LAC designing, BSCCommissioning, Site re-parenting from Optimization Perspective Date of Initial Issue: 01/09/2005
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Doc #: E/ANPD/RFO/002
Issue # 1
Title: Paging analysis, LAC designing, BSCCommissioning, Site re-parenting from Optimization Perspective Date of Initial Issue: 01/09/2005
Rev:
Date of Rev:
Introduction:
The purpose of this document is to standardize the procedure involved in “BSS Planning from Optimization Perspective”. 3.
Scope:
BSS level Optimization involves certain key parameters that involve BSS Planning inputs. The Scope of this document is to highlight various BSS related parameters that have an impact on Network Performance. Performing paging analysis. 1. Performing LAC optimization. 2. Site Re-Parenting. 3. BSC Re-parenting. 4.
Procedure:
Following is the step-wise procedure to cater for BSS Planning related issues from optimization perspective. Paging Analysis:
1. 2. 3. 4. 5. 6. 7.
8. 9. 10. 11. 12.
Paging stats from NSS are being monitored on monthly basis. LACs having paging success rate less then 80% are filtered for further analysis. LAC boundary areas with coverage issues are separated as paging success rate is less for low coverage areas. Cell level analysis are carried out initially and if required database parameter changes related to channel configuration are carried out based on Traffic analysis. Page related stats from the BSS are verified. (No. of repeats, time between multiframes and Max Retrans Duration etc are fine tuned). If no database discrepancy is being observed, then C7 signaling links are being monitored for link occupancy and utilization. NSS send the link utilization for each BSC on weekly basis. If the Link Occupancy & Utilization is greater then 40%, immediate request is sent to NSS-Planning for increased C7 links. OMCR send the BSC CPU Utilization report weekly for Load Calculations. If Radio parameters are already fine tuned & Links have proper utilization then issue is raised with BSS/NSS teams. For certain cases where pages per second is exceeding the Hardware defined limits, a red flag is raised with the BSS planning. Regular stats are being shared mutually between BSS Planning & Optimization to have optimized pages per second and to have better paging success rate. To prepare a benchmark report for the analysis and future reference.
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Doc #: E/ANPD/RFO/002
Issue # 1
Title: Paging analysis, LAC designing, BSCCommissioning, Site re-parenting from Optimization Perspective Date of Initial Issue: 01/09/2005
Rev:
Date of Rev:
LAC Optimization:
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15.
Update the vector file of the entire central region and add a column of BSC name in that file. Plot it in MapInfo and create a thematic map based on the LAC values by using contrasting colors. Open a copy of the same vector file in Map Info and cerate a thematic map based on BSC Names. Search for any discontinuity in the color codes. In such areas propose an appropriate LAC and BSC and update the vector field according to your proposals and then plot it again to verify your recommendations. To check the existing subscriber per LAC basis. If the subscriber exceeds 90K per LAC, a new LAC is proposed within the same location. Pages per second analysis are to be carried out. These should not exceed the BSS hardware Limitations. No ill logical LAC boundary should be assigned. To monitor the SDCCH blocking and SDCCH usage due to location update on regular intervals. To monitor the impact of LU on the BSS performance and load evolution stats on per BSC basis. C7 links utilization per LAC to be monitored. If any of the issues appear, NSS & BSS planning are informed for New LAC. New LAC is re-designed based on Optimized signaling distribution while keeping in mind subscriber mobility, Subscriber density & radio signaling resources. An Optimization plan is sent to BSS-Planning for approval and implementation. To prepare a benchmark report for the analysis and future reference.
Site Re-parenting:
1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
Verify the BSC boundaries accordingly. The boundary should be in the form of a cluster of sites for that BSC. Perform LAC analysis and report for any discrepancies. Create a thematic map on basis of LAC/BSC and point out the ill-logical BSC Boundary or LAC boundary as justification for site re-parenting. Pre-Post predictive traffic analysis for parent and target BSC. Pre/Post count of TRX for parent/target BSCs. Predictive count of Handover Analysis. A-ter & Signalling load of the target BSC. Target BSC Load evaluation analysis On basis of LAC and BSC boundary analysis, forward any proposed re-parenting of the sites. The request to BSS-Planning for site re-parenting should follow the following form. Site Site
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Current L A C
Proposed LA C
Current B S C
Proposed B S C
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Doc #: E/ANPD/RFO/002
Issue # 1
Title: Paging analysis, LAC designing, BSCCommissioning, Site re-parenting from Optimization Perspective Date of Initial Issue: 01/09/2005
Rev:
Date of Rev:
Necessary approvals are: a. NSS Operations (Cell ID and necessary Database verification) b. BSS Planning for BSC related tasks. c. Optimization for optimal performance during the post activity & intimations to CS. d. BSS Operations for support during activity (in case of outages) & Field confirmations regarding execution. BSS-planning then coordinates with NSS/Billing/BSS-Operation for smooth activity.
BSC Re-parenting & Commissioning:
1. 2. 3. 4. 5. 6. 7. 8.
. o N
1
Verify the BSC boundaries accordingly. The boundary should be in the form of a cluster of sites for that BSC. Offloaded traffic analysis for parent and target MSCs. LAC re-designing justification (for different LAC) Predictive Handover Analysis Predictive Subscriber management and Mobilibity analysis. A-ter & Signalling load of the target BSC. Target BSC Load evaluation analysis Once BSC-Reparenting or commissioned is planned/endorsed, Optimization to float the required Optimization plan as a ttached. s e i t i v i t c A
PreShifting An aly si s
2
3
s k s a T
Stats health check for Sites being re-parented along with BSC-reparent actrivity. Neighbor Verification
During BSC Split
4
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Site Busy Status
Location Update timer for Re-parented/Newly commissioned BSC-X sites shall be changed
l b i n s o n s o r p e s P e e R
n o i t p i r c s e D
BSC-X split Plan based on Optimization requirements. To check for all the neighbors defined as to have the Pre Split Idea for proper Benchmark analysis during the DT. To verify and confirm that all the sites have been made busy after the BSC-X has been commissioned/Re-parent to Target MSC
Lac verifcation from the DT and to check for proper LAC update in both directions.
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e n s i u L t a e t m S i T
Doc #: E/ANPD/RFO/002
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Title: Paging analysis, LAC designing, BSCCommissioning, Site re-parenting from Optimization Perspective Date of Initial Issue: 01/09/2005
Rev:
Date of Rev:
to force the subscribers on new LAC/MSC
5
Call Initialization Verification
6
Key stats
7
Post BSCShifting An aly si s
Comprehensive Drive Test
8
Generic Drive Test
9
BSC-X Health Report during this duration is to be prepared
9.
Check from the OMC-R/NSS that the site is taking calls as per normal behaviour To check for the Initial Key stats of the sites after BSC-X Commissioning/Re-parent activity. To check for the problematic sectors having abnormal KPIs to takle them on top priority. Comprehensive Drive test of BSC-X will be carried Out. No Audios status to be also confirmed during the Drive test. During the Drive test, Inter-BSS boundaries will be worked out and verified.Inter-MSC Handovers and Location Update shall also be tested. Generic Drive test of BSC-X will be carried out. This team will suggest any DB Parameters on the Spot. A consolidated report on the actions (if required) along with the health report of BSC-x to be Presented
Necessary approvals are: a. NSS Operations (Cell ID and necessary Database verification) b. BSS Planning for BSC related tasks. c. Optimization for optimal performance during the post activity & intimations to CS. d. BSS Operations for support during activity (in case of outages) & Field confirmations regarding execution.
10. 11.
BSS-planning then coordinates with NSS/Billing/BSS-Operation for smooth activity. As part of Benchmark Optimization report, BSC re-parenting Post activity report must contains the following: a. Handover analysis (Inter BSC, Inter MSC) and impact after the BSC reparenting using DT analysis. b. Site connectivity checks in terms of Key stats including Call Attempts, CSSR & HSR. c. Datafill & neighbor verification after BSC re-parenting.
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Doc #: E/ANPD/RFO/002
Issue # 1
Title: Paging analysis, LAC designing, BSCCommissioning, Site re-parenting from Optimization Perspective Date of Initial Issue: 01/09/2005
Rev:
4.
Date of Rev:
FLOW CHARTS:
Site Re-parenting Flow Chart:
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Technical justification may include the following: 5.
6.
7. 8.
9.
Pre-Post predictive traffic analysis for parent and target BSCs. Pre/Post count of TRX for parent/target BSCs. Predictive count of Handover Analysis. A-ter & Signalling load of the target BSC. Target BSC Load
Doc #: E/ANPD/RFO/002
Issue # 1
Title: Paging analysis, LAC designing, BSCCommissioning, Site re-parenting from Optimization Perspective Date of Initial Issue: 01/09/2005
Rev:
Date of Rev:
Necessary approval/confirmation: 5. NSS Operations (Cell ID and necessary Database verification) 6. BSS Planning for BSC related tasks 7. Optimization for optimal performance during the post activity & intimations to CS. 8. BSS Operations for support during activity (in case of outages) & Field confirmations regarding execution.
LAC justification
1.
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Parent/Target BSC LAC justification in terms of: a. Signalling Load. b. Logical BSC Boundary. c. Impact on InterMSC Handovers.
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Doc #: E/ANPD/RFO/002
Issue # 1
Title: Paging analysis, LAC designing, BSCCommissioning, Site re-parenting from Optimization Perspective Date of Initial Issue: 01/09/2005
Rev:
Date of Rev:
BSC Re-parenting Flow Chart:
Necessary approval/confirmation:
Technical justification may include the following:
Offloaded traffic analysis for parent and target MSCs. 2. LAC re-designing justification (for different LAC) 3. Predictive Handover Analysis 4. Predictive Subscriber management and mobilibity analysis. 1.
1. NSS Operations (Cell ID and necessary Database verification) 2. BSS Planning for BSC related tasks 3. Optimization for optimal performance during the post activity & intimations to CS. 4. BSS Operations for support during activity (in case of outages) & Field confirmations regarding execution.
BSC re-parenting Post activity report must contains the following: 1. 2. 3.
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Handover analysis (Inter BSC, Inter MSC) and impact after the BSC-reparenting using DT analysis. Site connectivity checks in terms of Key stats including Call Attempts, CSSR & HSR. Datafill & neighbor verification after BSC re-parenting.
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Doc #: E/ANPD/RFO/002
Issue # 1
Title: Paging analysis, LAC designing, BSCCommissioning, Site re-parenting from Optimization Perspective Date of Initial Issue: 01/09/2005
Rev:
Date of Rev:
LAC & Pagging Optimization Flow Chart: BSS Planning from Optimization perspective
Paging Analysis
LAC Optimization
Monitor NSS paging stats
Update the Vector file and create a thematic map in MAPINFO
Filter LAC’s having paging success rate <70%
Filter out LAC boundary areas with no coverage issues
Carry out cell level analysis and traffic analysis and take appropriate actions
Verify paging stats with BSS
Check Link Utilization and take appropriate actions if it’s high
In case paging/Sec exceeds hardware limits raise red flag with BSS-Planning
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Search for discontinuity in color and propose an appropriate lac
Check subscriber per LAC and propose a new LAC where needed
Carry out cell level analysis and traffic analysis and take appropriate actions
Carry out pages per second analysis
Monitor Link Utilization and SDCCH Blocking and inform BSS/NSS incase of an issue
In case paging/Sec exceeds hardware limits raise red flag with BSS
Re-design new LAC based on Optimized signaling distribution and send a report to BSS for approval
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Doc #: E/ANPD/RFO/002
Issue # 1
Title: Paging analysis, LAC designing, BSCCommissioning, Site re-parenting from Optimization Perspective Date of Initial Issue: 01/09/2005
Rev:
Date of Rev:
Actions to be taken:
The recommendations made should be followed up with the respective departments. Benchmarking report shall be submitted by Optimization to present the overall Network element performance if required/requested.
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Doc #: E/ANPD/RFO/002
Issue # 1
Title: Paging analysis, LAC designing, BSCCommissioning, Site re-parenting from Optimization Perspective Date of Initial Issue: 01/09/2005
Rev:
Date of Rev:
End of Document
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