2G & 3G Planning and Optimization - Part-4 [GSM Parameter Configuration and Adjustment ]
This part is very important and contains detailed description of parameters and timers.
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Contents
4 GSM Parameter Configuration and Adjustment. 5
4.1 Network and Cell ID.. 5
4.1.1 Cell Global ID.. 5
4.1.2 Base Station Identity Code. 7
4.2 Paging and Access Control Parameters. 8
4.2.1 Number of Access Grant Reserved Blocks (BS_AG_BLK_RES or AG). 8
4.2.2 Frame Number Coding Between Identical Paging. 9
4.2.3 Common Control Channel Configuration (CCCH-CONF). 10
4.2.4 Extended Transmission Slots (TX_INTEGER). 12
4.2.5 Minimum Access Level of RACH.. 13
4.2.6 Random Access Error Threshold. 14
4.2.7 Access Control Class (ACC). 15
4.2.8 Maximum Retransmission Times (RET). 16
4.2.9 Control Class of MS Maximum Transmit Power (MS-TXPWR-MAX-CCH). 17
4.2.10 Power Offset (POWEROFFSET). 18
4.2.11 IMSI Attach/Detach Allowed. 18
4.2.12 Direct Retry (DR). 19
4.3 Serial Parameters of Cell Selection and Reselection. 20
4.3.1 cell_bar_access. 20
4.3.2 cell_bar_qualify. 20
4.3.3 Minimum Received Level Allowing MS to Access (RXLEV_ACCESS_MIN). 22
4.3.4 Additional Reselection Parameter Indicator. 22
4.3.5 Cell Reselection Parameter Indicator. 23
4.3.6 Cell Reselection Offset, Temporary Offset, and Penalty Time. 23
4.3.7 Cell Reselection Hysteresis (CRH). 25
4.4 Parameters Affecting Network Functions. 26
4.4.1 Newly Established Cause Indicator (NECI). 26
4.4.2 Power Control Indicator (PWRC). 27
4.4.3 Discontinuous Transmit of Uplink. 28
4.4.4 Discontinuous Transmit of Downlink. 28
4.4.5 Call Resetup Allowed. 29
4.4.6 Emergency Call Allowed. 29
4.4.7 Early Classmark Sending Control30
4.5 Frequency Hopping Parameters. 31
4.5.1 Frequency Hopping Sequence Number. 31
4.5.2 Mobile Allocation. 32
4.5.3 Mobile Allocation Index Offset. 32
4.6 Distance Control Parameters. 33
4.6.1 Call Clearing. 33
4.6.2 TA Handover Threshold (MSRANGEMAX). 33
4.6.3 TA Restriction (MS_BS_DIST_USED). 34
4.7 Radio Link Failure Process and Parameters. 34
4.7.1 Radio Link Failure Counter (RLC or Radio Link Timeout). 35
4.7.2 SACCH Multiframe (RLTO_BS). 36
4.8 Handover and Related Parameters. 37
4.8.1 PBGT Handover Threshold (HoMargin). 37
4.8.2 Minimum Downlink Power of Handover Candidate Cells (rxLevMinCell). 37
4.8.3 Handover Threshold at Uplink Edge. 38
4.8.4 Handover Threshold at Downlink Edge. 38
4.8.5 Downlink Quality Restriction of Emergency Handover. 39
4.8.6 Uplink Quality Restriction of Emergency Handover. 39
4.8.7 Uplink Quality Threshold of Interference Handover. 40
4.8.8 Downlink Quality Threshold of Interference Handover. 40
4.8.9 Uplink Received Power Threshold of Interference Handover. 41
4.8.10 Downlink Received Power Threshold of Interference Handover. 41
4.8.11 Maximum Repeated Times of Physical Messages (NY1). 42
4.8.12 Multiband Indicator (multiband_reporting). 43
4.8.13 Permitted Network Color Code (ncc permitted). 44
4.9 Power Control and Related Parameters. 45
4.9.1 Maximum Transmit Power of MS (MSTXPWRMX). 45
4.9.2 Received Level Threshold of Downlink Power Increment (LDR). 46
4.9.3 Received Level Threshold of Uplink Power Increment (LUR). 47
4.9.4 Received Quality Threshold of Downlink Power Increment (LDR). 47
4.9.5 Received Quality Threshold of Uplink Power Increment (LUR). 48
4.9.6 Received Level Threshold of Downlink Power Decrement (UDR). 49
4.9.7 Received Level Threshold of Uplink Power Decrement (UUR). 50
4.9.8 Received Quality Threshold of Downlink Power Decrement (UDR). 50
4.9.9 Received Quality Threshold of Uplink Power Decrement (UUR). 51
4.9.10 Power Control Interval (INT). 52
4.9.11 Power Increment Step (INC). 52
4.9.12 Power Decrement Step (RED). 53
4.10 Systematic Important Timers. 53
4.10.1 T3101. 53
4.10.2 T3103. 54
4.10.3 T3105. 54
4.10.4 T3107. 55
4.10.5 T3109. 55
4.10.6 T3111. 56
4.10.7 Parameter T3212. 56
4.10.8 T3122. 58
4.10.9 T3124. 58
4.10.10 T11. 59
4.10.11 T200. 60
4.10.12 N200. 61
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