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NSN NOKIA 3G KPI for Network planning and optimization

NSN NOKIA 3G Network planning and optimization KPI Key Performance Indicators, Nokia, NSN,Nokia Siemens Network

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WCDMA
KPIANALYSIS
&
OPTIMIZATION
Network Planning & Optimization
Nokia 3G Technology
By:Yogender Rana
(Ref: Nokia/web/www)
KPI Definition
Cell availability
Call Setup Success Rate (CSSR)
Call Drop rate
SHO/ISHO/HSPA SCC success rate
Packet Session setup/success rate (NRT, HSDPA, HSUPA)
In NOLS:
RNC counter description
NetAct DB description for RNC measurements
WCDMA RAN Key Performance Indicators
Key Indicator Changes
Measurement Changes
KPI Definition
Accessibility
RRC Setup & Access Rate
RAB Setup & Access Rate
Call Setup Success Rate
PS Setup Success Rate (NRT, HSDPA, HSUPA)
KPI Definition
Retainability
RRC Drop Rate
RAB Drop Rate
PS Success Rate (NRT, HSDPA, HSUPA)
KPI Definition
Mobility
SHO/ISHO Success Rate
SHO Overhead
HDSPA/HSUPA SUCC success Rate
KPI Definition
Usage
Cell Availability
Ave. Uplink Load
Ave. Downlink Load
HSDPAThroughput
CellThroughput
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NSN NOKIA 3G KPI for Network planning and optimization

  • 1. WCDMA KPIANALYSIS & OPTIMIZATION Network Planning & Optimization Nokia 3G Technology By:Yogender Rana (Ref: Nokia/web/www)
  • 2. KPI Definition Cell availability Call Setup Success Rate (CSSR) Call Drop rate SHO/ISHO/HSPA SCC success rate Packet Session setup/success rate (NRT, HSDPA, HSUPA) In NOLS: RNC counter description NetAct DB description for RNC measurements WCDMA RAN Key Performance Indicators Key Indicator Changes Measurement Changes
  • 3. KPI Definition Accessibility RRC Setup & Access Rate RAB Setup & Access Rate Call Setup Success Rate PS Setup Success Rate (NRT, HSDPA, HSUPA)
  • 4. KPI Definition Retainability RRC Drop Rate RAB Drop Rate PS Success Rate (NRT, HSDPA, HSUPA)
  • 5. KPI Definition Mobility SHO/ISHO Success Rate SHO Overhead HDSPA/HSUPA SUCC success Rate
  • 6. KPI Definition Usage Cell Availability Ave. Uplink Load Ave. Downlink Load HSDPAThroughput CellThroughput
  • 8. GenuineCallSetup FailureScenarios RF issue  Interference / Dominance / Coverage  Missing neighbor System Issue – BTS  No response to “RRC Connection Request”  “RRC Connection Reject” to “RRC Connection Request” System issue – RNC  “CC Disconnect” after “Call Proceeding” due to “DL RRC Connection Release” Core NW  “CM Service Abort” after “CM Service Request” System issue (test number)  “CC Disconnect” after “CC Progress”
  • 9. Genuine DropCall scenarios RF issue  Interference / Dominance / Coverage  Missing neighbor System Issue – BTS  Sudden “CC Disconnect” due to “DL RRC Connection Release””  Sudden drop to idle, no disconnect messaging. System issue – RNC  Sudden “CC Disconnect” due to “DL RRC Connection Release”
  • 14. Call setup failures – Missing Neighbor Missing neighbor analysis over the whole route(3G-3G, 3G- 2G) Search for failures due to missing 3G-3G neighbors Search for failures due to missing 3G –2G neighbors It is suggested to place 2G scanner to the test vehicle
  • 15. CallSetup Failure Analysis- Block B The purpose of this activity is to check the Random Access Process is working adequately by investigating whether AI (Acquisition Indicator) has been received through DL AICH If AICH was not received by UE, the cause of the problem can be classified into: Inadequate RAN parameter related to Random Access: RAN parameter settings for pre-amble transmission or open loop power control information is not correct. UL Coverage limit: UL coverage of UE is smaller compared to serving cells DL coverage so that UE’s Tx power cannot reach serving cell.