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Smart Repeater Phase 1 Trial

Smart Repeater Phase 1 Trial. Feb. 12, 2004. Contents. Phase 1 Trial Objectives Test Environment Test Scenario & Procedure Test Result Error Cases Types of Errors Solutions for Error Cases Error-prone Raw Data Case Virtual PN Solution for Triangle Measurement Support

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Smart Repeater Phase 1 Trial

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  1. Smart Repeater Phase 1 Trial Feb. 12, 2004

  2. Contents • Phase 1 Trial Objectives • Test Environment • Test Scenario & Procedure • Test Result • Error Cases • Types of Errors • Solutions for Error Cases • Error-prone Raw Data Case • Virtual PN Solution for Triangle Measurement Support • Smart Repeater Solution • Repeater Analysis System (RAS) & TAM • EMS Display Window • Conclusion • Action Items and Q&A

  3. Phase 1 Trial Objectives • Verify PSRF Algorithm for E911 Services • Introduce Concept & Functionality of Smart Repeater

  4. Test Environment STIC Lab. Area Nortel BS At Craig, Technique, and College Park 7/8” Cable (100m) CDMA Serving One Way Delay 2 & Pilot PN Phase EMS Repeater Antenna (Yaggi Ant.) Repeater PDE Repeater O&M RAS Main (PSRF , Call Traffic) ANSI-41 Network E3 MSC MPC Repeater Mobile Station E5 Helical Antenna WATERSIDE ONE Building E12 PDE CDMASOWD2 & PILOT_PN_PHASE

  5. Test Scenario Case 1 No Repeater Configuration Number of Call Setups – 50 Case 2 Repeater ON, PSRF OFF Configuration Number of Call Setups – 50 Case 3 Repeater ON, PSRF ON Configuration Number of Call Setups – 50 Test Procedure Make a mobile-originated call. Gather the log at MS, PDE, and MPC MS Side REF_PN, TIMESTAMP, PILOT_PN_PHASE PDE Position Determination Coordinates (Long, Lat) and other parameters MPC CDMASOWD, SMSBearerdata, MIN, and other parameters Post-processing & Analysis Test Scenario & Procedure

  6. PDE Positioning Result Source: PFxxxxxx.CSV

  7. Test Case 2: Repeater=ON, PSRF=OFF EMS Calculation Excel Calculation

  8. Test Case 3: Repeater=ON, PSRF=ON EMS Calculation Excel Calculation

  9. Error Case 1 - System Delay Estimation Test Case #1 – No Repeater Configuration System Delay Estimation = 120 GPS Measurement Position CDMASOWD : 169 x 1/16 PN Chips TIME_REF_MS(24) : 0x090DD1 OFFSET_INCL(1) : 0 REF_PN(9) : 20 REF_PILOT_STRENGTH(6): 20 BAND_CLASS(5) : 0x01 CDMA_FREQ(11) : 249 BASE_ID(16) : 7089 SID(15) : 993 NID(16) : 1 TOTAL_RX_PWR(5) : 0x04 PART_NUM(3) : 0x0 TOTAL_PARTS(3) : 0x0 NUM_PILOTS_P(6) : 0x05 PILOT_PN_PHASE(19) : PN 28 +24chipsX16(28696) PILOT_STRENGTH(6) : 27 RMS_ERR_PHASE(6) : 011110 PILOT_PN_PHASE(19) : PN 20 -1chipsX16(20479) PILOT_STRENGTH(6) : 20 RMS_ERR_PHASE(6) : 011011 PILOT_PN_PHASE(19) : PN 12 -150chipsX16(12138) PILOT_STRENGTH(6) : 58 RMS_ERR_PHASE(6) : 111011 PILOT_PN_PHASE(19) : PN 16 -6chipsX16(16378) PILOT_STRENGTH(6) : 49 RMS_ERR_PHASE(6) : 101110 PILOT_PN_PHASE(19) : PN 32 +28chipsX16(32796) PILOT_STRENGTH(6) : 45 RMS_ERR_PHASE(6) : 101011 ADD_PILOTS_INCL(1) : 0 RESERVED(4) : 0x00 After system delay estimation Before system delay estimation

  10. Error Case 2 – Air Environment Estimation Pilot Strength: -100dBm 60 ~ 75% Average: 60% Error Rate of Position Determination By SnapTrack PDE 10 ~ 20% -100dBm Pilot Strength 11.2 ~ 30% area of BTS coverage can occur to decrease position accuracy.

  11. BS#1 BS#2 BS#3 BS#2 Error Case 3 - Others • System tuning is required for increasing accuracy. • According to system variation, CDMASOWD is variable. • BS Almanac Database Update • Estimation of MS Delay by handsets • Appropriate Pilot Provisioning

  12. Types of Errors

  13. Solutions for Error Cases • Error1: an error by fading effect • Error2: an error at the repeater installation area • Error3: an error by fading effect at the repeater coverage BS#1 – Repeater Coverage • Error 1 can be estimated with image matching and telematics module. • Error 2 can be estimated with PSRF Solution. • Error 3 can be fixed with Virtual PN and TAM (Traffic Analysis Module). Error3 BS#1 Coverage Error2 Repeater Error1

  14. Error-prone Raw Data Case GPS Measurement Position Measurement Position with Repeater ON PSRF Compensation Position Measurement Position without system delay estimation

  15. Virtual PN Solution for Triangle Measurement Support -100dBm Large Virtual PN Small Virtual PN

  16. Smart Repeater Solution • PSRF Support for Location Compensation • Built-in TAM (Traffic Analysis Module) and RAS (Repeater Analysis System) • Easy Installation & Remote Control • System Tuning & Optimization • Performance Measurement • Call Capacity Measurement • Dynamic Gain Control

  17. Repeater Analysis System (RAS) & TAM – Example Display Window

  18. EMS Display Window

  19. Conclusion • For the various error cases, estimation is required to fix them. • For Sprint PCS, positioning algorithm tuning is required and new various positioning algorithm is required to develop for more accuracy. • In the case of repeater installation, position compensation algorithm is required. • The detailed study is required for decreasing error cases.

  20. Action Items and Q&A Thank You!

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