60185198 BTS Parameter

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RACHBT ( rachBusy Threshold): This attribute defines a threshold for the received

signal level during network access and handover access. A signal level exceeding this

threshold is interpreted as a busy RACH or a busy FACCH (When transmittingCHANEL REQUEST (RACH) or Handover ACCESS (FACCH).

Range: 0...127 (-1 dBm step size)Default: 109

aMRFullRateCodec1: This parameter indicates the first AMR (Adaptive MultiRate)

active codec in case of Full rate codec. Following bit rate can be set:

RATE_01 4.75 kbps

RATE_02 5.15 kbps

RATE_03 5.90 kbps

RATE_04 6.70 kbps

RATE_05 7.40 kbpsRATE_06 7.95 kbps

RATE_07 10.2 kbps

RATE_08 12.2 kbps

Default: RATE_01

aMRFullRateCodec2: Default: RATE_03



aMRFullRateInitialCodec: This parameter defines the Initial Codec Mode. I.e. the Fullrate active codec mode which must be sent at first during a call.

Default: START_MODE_FR.

aMRFullRateThresholds12:This parameter defines the couple threshold-Hysteresis

related to the active codec specified in the AMRFRC1 and AMRFRC2 attributes in caseof Full rate code.

Default: Threshold: 7 equivalent to 6 dB (rang0. to 63dB step size .5)

Hysteresis:4 equivalent to 2 dB(range0 to 15dB step size .5)

aMRFullRateThresholds23:Default: Threshold:12 equivalent to 6 dB (rang0. to 63.5dB step size .5)


aMRFullRateThresholds34:

Default: Threshold:12 equivalent to 6 dB (rang0. to 63dB step size .5)


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aMRHalfRateCodec1: Default: RATE_01




aMRLinkAdapTuning: This parameter is used by the AMR Uplink Code modeAdaptation in the BTS . It tunes the transition between ode modes determined by internal

thresholds. A value higher than the default shifts the transition towards higher carrier to

interferer ratios. A value lower than the default has the opposite effect. AMP Half rate

and Full rate is affected simultaneously. Default is the optimum setting and normallyrequires no modification.

Default: 0dB equivalent to 100

antennaHoppingMode: This parameter specifies whether the BCCH TRX has to be

included in the hopping sequence for Antenna hopping or not.

Default: NOBCCHTRX (range: ALLTRX, NOBCCHTRX)

antennaHoppingPeriod: This parameter is used for Antenna hopping and specifies how

many frames are transmitted over each antenna before the next one is used to send the

frames.

Meaning of value:EVERY_FRAME: Antenna hopping is performed every frame

EVERY_SECOND_FRAME: Antenna hopping is performed every two frame

EVERY_FOURTH_FRAME: Antenna hopping is performed every four frame

Default: EVERY_SECOND_FRAME

CellBarQualify: This attribute is used by the network to control mobile station GSM

phase 2 cell selections and reselection.

Default: 0 (0-high priority, 1-priority)

Cell Reselect Hysteresis: This parameter indicates the value of the received RF powerlevel hysteresis required for cell reselection.

Range: 0 t 7. Step size 2dB

Default: 2

Cell Reselection paramId: This value indicates presence of C2 cell reselection

parameter

Range: 1=present, 0=absent

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Default: 1

Cell Type: STDCELL (standard cell), maximum MS distance 35 km.EXTCELL (extended cell), maximum MS distance 100 km

Default: STDCELL

enableAntennaHopping:

Default: False

Enable EOTD: This parameter represents the flag to enable the setting of TSC (Training

Sequence Code) equal to BCC for all channels transmitting on BCCH.

Range: True, False

Default: False

Enhanced Pairing Threshold1: This parameter is the threshold that indicates when the

enhanced pairing for TCH/H channels feature is enabled, the percentage of busy TCH in

case of standard cell or complete area of a concentric cell.Range: 0 to 10000

Default: 6000

RXLevMinCell: This attribute holds the minimum received signal strength in a cell for aMS to be handed over to that cell. It is the minimum RXLEV required from an MS to

perform the handover to adjacent cell . This parameter is used in the handover pre-

processing function.

Range: 063 dB

Default: 12Range: 0 (-110dBm)...63 (-47dBm)Step Size: 1Unit: dBrDefault: 12

backHoForbiddenTimer: Timer to inhibit back handover .This parameter represents the timer used to establish the time for which a backhandover due to traffic reason or PBGT (Power Budget) has to be avoid.

Range: 1...120Step Size: 1Unit: s

Default: 100s

fastULHoCell: Indicates whether the adjacent cell is a predefined fast uplink handover

cellWhen searching a target cell for fast uplink handover, cells that have the attributeFULHOC set to TRUE will be preferred to cells that have this attribute set to FALSERange: 0, 1 (0=FALSE, 1=TRUE)Step Size:Unit:

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Default: FALSE

fastULRxLevMinOffset : Determines the margin for fored handover or directed retry.The value of this parameter is used to select a target cell for fast uplink handoverRange: 0...126 (-63...+63 dB)Step Size: 1

Unit: dBDefault: 69

gprsSupported: Indicates if the GPRS services are supported for the cell

hoMargin: The value of this attribute is used as a threshold to prevent repetitive hand

over between adjacent cells, should the handover be caused by received signal level or

the power budget process.

Range: -63 to +63 dB by steps of 1 dB (Equivalent to 0...126)

Default: 69 (6 dB)

hoMarginDelayTime: Specifies the time an immediate handover request is delayedwhen a power budger handover to a microcell is requested.

hoMarginDynamicOffset: Specifies the dynamic offset by which the handover marginis reduced after expiry of the timer hoMarginDelayTime

hoMarginStaticOffset: Specifies the static offset by which the handover margin is

increased as long as the timer hoMargirnDelayTime runs..

Handover Margin Static Offset; specifies the value to increase the HO_MARGINHO_STATIC_OFFSET is added to the handover margin of those neighbour cells of alower layer structure whose timer has not yet been startet or is still running. A high valueof HO_STATIC_OFFSET effectively prevents a handover into the respective cell duringthe runtime of the timer for that cell.

levelHOMargin: This parameter represents a threshold to guarantee a handover to a

target cell with a higher level than the serving cell, without altering the behaviour of the

other handover types.

Range: -63 to +63 dB by steps of 1 dB (Equivalent to 0...126)

Default: 69 (6 dB)

LevelOffsetNCell: The attribute defines the level offset that is added to the minimum

receive level of an adjacent cell to become a target cell in case the ranking method 1 is

specified in the hierarchical Cell Rank Flang .

Range: 0 to +63 dB by steps of 1 dB (Equivalent to 0...63

Default: 0

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PenaltyPriorityLayerNCell: Determines if speed sensitive handover and ranking of

target cells on the basis of priority are used for handover.

priorityLayerNCell: The attribute defines the priority layer of the neighbour cell (0

highest priority , 15 lowest priority)

Range: 0...15

Default: 0

LevelOffsetNcell: Level offset that is added to the minimum receive level of an adjacent

cell to become a target cell in case the ranking method 1 specified in the hierarchical Cell

Rank flag (HAND object)

Microcell: Determines whether the adjacent cell is regarded as a micro cell

timerFHO: Timer for forced handover started after a directed retry procedure.Timer back handover controls the duration how long a former serving cell from whichforced HO was performed to the new serving cell may not be considered in the HOdecision algorithm of the new serving cell and may not be contained in the target cell list.The timer is started at the reception of a Channel Activation message containing a CellIdenifier (no target) .Range: 1...320Step Size: 1Unit: 10 secondsDefault : 12

TimerInhibitBackHo: Timer to inhibit back handover.This timer is used to control the Prevention of Back Handover feature.This mechanism inhibits back handovers (power budget) to the old serving cell byexcluding this cell (adjacent cell) from the target cell list generation for a this time.

Range: 1...254Step Size: 1Unit: 1 secDefault :30

TimerInhibitFailHo: Timer to inhibit handover failure repetition.

This feature avoids consecutive handover failures towards the same cell (adjacent cell).For this the BSC sends the message HO_FAILURE_IND (containing the CI of theadjacent cell) to the BTS, if a defined number of handover failures is reached (seeMAXFAILHO 18.2.41). The BTS will exclude this cell from a target cell list in case of anykind of handover request for this specific time

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Range: 1...254Step Size: 1Unit: 1 secDefault: 7

TrafficHandoverMargin: Nominal cell border between cells

Range: 0...126 (-63...+63 dB)Step Size: 1Unit: dBDefault: 67

trafficHoRxLevMinOffset: Represents an additional offset which is added to the

handover minimum criterion to qualitfy an adjacent cell as a target cell for traffic

handover.

60185198 BTS Parameter

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