Pilot Channel Failure
3
PILOT CHANNEL FAILURE - HIGH DOWNLINK INTERFERENCE 3.1 SYMPTOMS 3.2 REASON 1 – NO DOMINANT CELL 3.3 REASON 2 – DOMINANT INTERFERER 3.4 REASON 3 – LOW BEST SERVING PPILOT/PTOT 4 PILOT CHANNEL FAILURE - OUT OF PILOT COVERAGE 4.1 REASON 1 – LOW PILOT CHANNEL POWER. 5 PILOT POLLUTION 5.1 SYMPTOMS 5.2 REASON – NO DOMINANT CELL 6 UPLINK AND PILOT COVERAGE IMBALANCE 6.1 SYMPTOMS 6.2 REASON 1 – LARGE PILOT CHANNEL POWER 6.3 REASON 2 – HIGH UE TX POWER RESTRICTION 7 TRANSMITTING MAX DL CODE POWER – FULL COVERAGE 7.1 SYMPTOMS 7.2 REASON – LOW MAXIMUM ALLOWED DL CODE POWER 8 TRANSMITTING MAX DL CODE POWER – NOT FULL COVERAGE 8.1 SYMPTOMS 8.2 REASON – DOWNLINK POWER DRIFT 9 INSUFFICIENT RECEIVED UL DPCH POWER 9.1 SYMPTOMS 9.2 REASON – LOW MAXIMUM ALLOWED UL SIR TARGET 10 RAPIDLY CHANGING RADIO ENVIRONMENT 10.1 REASON – UL OUTER LOOP POWER CONTROL PROBLEM 11 UNEVEN LOAD DISTRIBUTION 11.1 REASON 1 – HOMOGENOUS PILOT SETTING IN AN IRREGULAR NETWORK 11.2 REASON 2 – UNWANTED LARGE CELL COVERAGE 11.3 REASON 3 – UNEVEN PILOT POWER 12 HIGH DOWNLINK TX POWER. 12.1 SYMPTOMS. 12.2 REASON – MANY USERS IN SOFT/SOFTER HANDOVER. 13 HIGH UPLINK RSSI 13.1 SYMPTOMS. 13.2 REASON – HIGH MINIMUM ALLOWED UL SIR TARGET. 14 MANY DOWN-SWITCHES DUE TO COVERAGE TRIGGERING. 14.1 SYMPTOMS. 14.2 REASON – DOWNLINK DPCH AND PILOT COVERAGE IMBALANCE. 15 HIGH FACH USAGE 15.1 SYMPTOMS. 15.2 REASON 1 – IMPROPER UP-SWITCH THRESHOLDS. 15.3 REASON 2 - IMPROPER DOWN-SWITCH TIMER SETTING. 16 HIGH SWITCHING RATES BETWEEN DEDICATED AND COMMON CHANNELS 16.1 SYMPTOMS.
description
Pilot Channel Failure
Transcript of Pilot Channel Failure
PILOT CHANNEL FAILURE - HIGH DOWNLINK INTERFERENCE3.1 SYMPTOMS 3.2 REASON 1 – NO DOMINANT CELL3.3 REASON 2 – DOMINANT INTERFERER 3.4 REASON 3 – LOW BEST SERVING PPILOT/PTOT 4 PILOT CHANNEL FAILURE - OUT OF PILOT COVERAGE 4.1 REASON 1 – LOW PILOT CHANNEL POWER.5 PILOT POLLUTION5.1 SYMPTOMS5.2 REASON – NO DOMINANT CELL 6 UPLINK AND PILOT COVERAGE IMBALANCE6.1 SYMPTOMS6.2 REASON 1 – LARGE PILOT CHANNEL POWER6.3 REASON 2 – HIGH UE TX POWER RESTRICTION7 TRANSMITTING MAX DL CODE POWER – FULL COVERAGE7.1 SYMPTOMS7.2 REASON – LOW MAXIMUM ALLOWED DL CODE POWER8 TRANSMITTING MAX DL CODE POWER – NOT FULL COVERAGE8.1 SYMPTOMS8.2 REASON – DOWNLINK POWER DRIFT9 INSUFFICIENT RECEIVED UL DPCH POWER9.1 SYMPTOMS9.2 REASON – LOW MAXIMUM ALLOWED UL SIR TARGET10 RAPIDLY CHANGING RADIO ENVIRONMENT10.1 REASON – UL OUTER LOOP POWER CONTROL PROBLEM11 UNEVEN LOAD DISTRIBUTION11.1 REASON 1 – HOMOGENOUS PILOT SETTING IN AN IRREGULAR NETWORK11.2 REASON 2 – UNWANTED LARGE CELL COVERAGE11.3 REASON 3 – UNEVEN PILOT POWER12 HIGH DOWNLINK TX POWER.12.1 SYMPTOMS.12.2 REASON – MANY USERS IN SOFT/SOFTER HANDOVER.13 HIGH UPLINK RSSI13.1 SYMPTOMS.13.2 REASON – HIGH MINIMUM ALLOWED UL SIR TARGET.14 MANY DOWN-SWITCHES DUE TO COVERAGE TRIGGERING.14.1 SYMPTOMS.14.2 REASON – DOWNLINK DPCH AND PILOT COVERAGE IMBALANCE.15 HIGH FACH USAGE15.1 SYMPTOMS.15.2 REASON 1 – IMPROPER UP-SWITCH THRESHOLDS.15.3 REASON 2 - IMPROPER DOWN-SWITCH TIMER SETTING.16 HIGH SWITCHING RATES BETWEEN DEDICATED AND COMMON CHANNELS 16.1 SYMPTOMS.16.2 REASON 1 - IMPROPER UP-SWITCH THRESHOLDS.16.3 REASON 2 - IMPROPER DOWN-SWITCH THRESHOLD17 LOW DATA THROUGHPUT.17.1 SYMPTOMS..17.2 REASON 1 – POOR RADIO LINK QUALITIES17.3 REASON 2 – MANY DOWN-SWITCHES DUE TO COVERAGE TRIGGERING17.4 REASON 3 - HIGH FACH USAGE
17.5 REASON 4 - HIGH SWITCHING RATES BETWEEN DEDICATED AND COMMON CHANNELS.18 HANDOVER EVENT DETECTION FAILURE.18.1 REASON 1 – POOR UPLINK QUALITY18.2 REASON 2 – INCORRECT HANDOVER SERIES18.3 REASON 3 - MISSING NEIGHBORING RELATIONSHIP.18.4 REASON 4 – IMPROPER CELL INDIVIDUAL OFFSET SETTING.18.5 REASON 5 – SMALL SOFT HANDOVER AREA19 HANDOVER FUNCTION FAILURE19.1 SYMPTOMS19.2 REASON 1 – NO RBS RESPONSE. 19.3 REASON 2 – POOR DOWNLINK QUALITY19.4 REASON 3 – POOR UPLINK QUALITY19.5 REASON 4 – UE TRANSMITS WRONG CONTENTS IN THE MESSAGE.19.6 REASON 5 – ACTIVE SET UPDATE FAILURE.19.7 REASON 6 – UPLINK IN-SYNCHRONIZATION AT HANDOVER19.8 REASON 7 – DOWNLINK IN-SYNCHRONIZATION AT HANDOVER20 HIGH ACTIVE SET UPDATE RATE20.1 SYMPTOMS.20.2 REASON 1 – PING-PONG CAUSED DUE TO IMPROPER HANDOVER PARAMETER SETTINGS.20.3 REASON 2 – PILOT POLLUTION IN DEDICATED MODE.20.4 REASON 3 – MANY UNNECESSARY HANDOVER RELATIONSHIPS.21 NO SUITABLE CELL.21.1 SYMPTOM.21.2 REASON – HIGH RESTRICTION ON CELL (RE)-SELECTION PARAMETERS22 CELL RE-SELECTION FAILURE - UE IN IDLE OR CELL_FACH MODE.22.1 SYMPTOMS.22.2 REASON 1 - INCORRECT CELL RE-SELECTION SERIES.22.3 REASON 2 - MISSING NEIGHBORING RELATIONSHIP.22.4 REASON 3 – PILOT POLLUTION IN IDLE OR CELL_FACH MODE.22.5 REASON 4 – IMPROPER CELL RE-SELECTION OFFSET SETTING23 RANDOM ACCESS PROCEDURE PROBLEM23.1 SYMPTOMS.23.2 REASON 1 – IMPROPER PARAMETER SETTINGS FOR POWER RAMPING ON RACH23.3 REASON 2 – PRACH AND PILOT COVERAGE IMBALANCE23.4 REASON 3 – INSUFFICIENT AICH POWER23.5 REASON 4 – INSUFFICIENT POWER FOR RACH MESSAGE.24 MANY INTRA-FREQUENCY CELL RE-SELECTIONS24.1 SYMPTOMS.24.2 REASON 1 – IMPROPER RE-SELECTION HYSTERESIS SETTING.24.3 REASON 2 – INCONSISTENT CELL RE-SELECTION OFFSET SETTING.25 MANY INTER-FREQUENCY CELL RE-SELECTIONS25.1 SYMPTOMS.25.2 REASON – PING-PONG IN INTER-FREQUENCY CELL RE-SELECTIONS26 UPLINK DEDICATED RADIO LINK SYNCHRONIZATION FAILURE – CALL SETUP26.1 SYMPTOMS.26.2 REASON 1 – IMPROPER CELL RE-SELECTION OFFSET SETTING26.3 REASON 2 – INCORRECT INITIAL POWER CALCULATION FOR DEDICATED CHANNEL..50 26.4 REASON 3 - UPLINK AND DOWNLINK COVERAGE IMBALANCE..51 27 DOWNLINK DEDICATED RADIO LINK SYNCHRONIZATION FAILURE – CALL SETUP..52 27.1 SYMPTOMS..52 27.2 REASON 1 – IMPROPER BACKOFF CONSTANT SETTING..52
27.3 REASON 2 – IMPROPER CELL RE-SELECTION OFFSET SETTING52 27.4 REASON 3 - INTENDED DL DPCH AND PILOT COVERAGE IMBALANCE.53 27.5 REASON 4 - TOO LOW INITIAL DOWNLINK SIR TARGET5328 POOR QUALITY IN UPLINK..54 28.1 SYMPTOMS..54 28.2 REASON 1 – PILOT CHANNEL FAILURE54 28.3 REASON 2 – POOR QUALITY IN DOWNLINK..54 28.4 REASON 3 - UPLINK AND PILOT COVERAGE IMBALANCE..54 29 POOR QUALITY IN DOWNLINK.55 29.1 SYMPTOMS..55 29.2 REASON 1 – PILOT CHANNEL FAILURE55 29.3 REASON 2 – TRANSMITTING MAX DL CODE POWER55 29.4 REASON 3 – POOR QUALITY IN UPLINK..55 30 DISCLAIMER.56
![Distributed Channel Estimation and Pilot Contamination Analysis … · 2015-07-30 · arXiv:1507.08150v1 [cs.IT] 29 Jul 2015 1 Distributed Channel Estimation and Pilot Contamination](https://static.fdocuments.net/doc/165x107/5f56867cfe57a2634b321589/distributed-channel-estimation-and-pilot-contamination-analysis-2015-07-30-arxiv150708150v1.jpg)
