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Philadelphia CL01 Initial Cluster Report
11/19/2014
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Table of Contents Drive route Overall cluster overview
LTE signal overview/throughput Bandwise analysis LTE Maps Voice overview Voice Maps Suggestions Summary of the report Appendix
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Cascade on air (Green)/off air (Red)
Drive Route Cluster Name Philadelphia CL01 Miles Driven 300 Date 11/18/2014 – 11/19/2014 State NJ Cascade on air (Green)/off air (Red) PL13XC300 PL70XC056 PL03XC088 PL13XC301 PL13XC302 PL13XC318 PL13XC363 PL13XC364 PL13XC377 PL33XC456 PL54XC657 PL54XC817 PL54XC823 PL54XC855 PL73XC098 PL97XC005
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Philadelphia CL01 Overview
DL throughput, % time on LTE, RRC Drops and Fail is derived from M2; UL throughput and Latency is derived from M4, Voice Drops and Voice Blocks is derived from M1 The above chart represents the current standing of the cluster. Signal overview, Bandwise distribution, PRB etc… are found in the following slides.
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LTE signal overview Overall Band 41 Band 25 Band 26 M2 (LTE Locked DL)
M3 (Global DL) M4 (Global UL) Avg RSRP (dBm) Avg SINR (dBm) Overall Band 41 Band 25 Band 26 The black line is an approximation of in car threshold for 1900 band; i.e RSRP of -108dBm and SINR of 0dB
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SINR vs RSRP device wise
The black line is an approximation of in car threshold for 1900 band; i.e RSRP of -108dBm
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SINR vs RSRP Bandwise
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Average Throughput (Mbps)
M2 (LTE Locked DL) M3 (Global DL) M4 (Global UL) LTE only Overall (LTE +EVDO) NA
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Bandwise Throughput Note:
Bar chart represents the throughput per device per band and color of bar corresponds to the pie chart where the pie chart represents time on band per device.
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Average PRB distribution
M2 (LTE Locked DL) M3 (Global DL) Overall Average Band 41 Average (Maximum 100) Band 25 Average (Maximum 25) Band 26 Average (Maximum 25)
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RRC connection Stats Event M2 (LTE Locked DL) M3 (Global DL)
M4 (Global UL) RRC Connection Attempt RRC Connection Failure RRC Connection Successful RRC Connection Drop HO Failures % RRC Connection Setup Failure % RRC Connection Drop % RRC Connection Setup Failure = RRC Connection Failure/RRC Connection Attempt; % RRC Connection Drop = RRC Connection Drop/RRC Connection Successful All HO failures does not lead to connection drop
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Preliminary Drops Categorization
Condition Coverage RSRP < -110 dBm Interference SINR < 0 dB and RSRP < -110 dBm HO failures Drops due to HO failures Others Neither of the above condition
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Preliminary Drops Categorization; Scatter plot
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Modulation Scheme (M2)
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Modulation Scheme (M3)
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EVDO signal overview Ec EcIo Average
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Voice Signal Overview Parameter Average Value Average Ec (dBm)
Average Ec/Io (dB) Average Rx power (dBm) Average FER Average Setup time (s)
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Voice Call Overview Event Count Call attempt Block
Successful connect call Drop Call Normal call end % Voice Call Failure % Voice Call Drop
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Voice Maps: Signal Strength with events (drops and setup failures) Signal Quality PN plot
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Suggestions/market specific requests
Low hanging suggestions like sector swap, site down, top offender etc…. Or as per the request of your corresponding market.
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Summary Most of the sites were not on Air
Average throughput for B41 is good LTE coverage as well as throughput should increase as the new LTE sites come on air Voice performance is good with only about .1% failure rate and no drop rate
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Appendix
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Test Setup
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Assumptions Drive Routes
Detailed routes built on top of T-Mobile baseline route expanded to cover majority of the roads especially in the Downtown, Urban areas & AGOOP worst performing meshes. Test Configuration Drive test configuration proposed in the following slides is based on: Measure accessibility & retainability of Voice calls, this will also help us measure eCSFB performance LTE Locked mode to provide performance on LTE & also compare LTE only mode vs. Global mode Global Mode is to measure how end user will perceive the performance Multi-streaming is done to squeeze the best performance of the network, it will identify problem areas where throughputs are low Ping & Uploads case is there to measure latency and upload throughputs. Scanner will provide RF footprint information for the sectors and will help in physical optimization efforts.
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Drive Test Configuration
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Notes Post processing tool used was Windcatcher 3.2.2.1
Area wise analysis will be presented in detailed report
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