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BSSPAR1: Chapter 1Introduction to Parameter Planning

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At the end of the module, the participant will be able to:

• Sketch a BSS Managed Object Hierarchy

• Look up the parameters at each level, in the parameter dictionary

• Identify parameter value ranges and default settings

• Find the changes to objects and parameters, that occur with each BSS software release

Module Objectives

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Managed Object (MO) Hierarchy

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Example from Parameter Dictionary

Parameter name Rxlev Access Min

Abbreviated name rxLevAccessMin

Managed object BTS

Multiplicity 1

DescriptionWith this parameter you define the minimum power level an MS has to receive before it is allowed to access the cell.

Additional information -

Range and step -110...-47 dBm, step 1 dBm

Formula for getting internal value internal_value = (gui_value + 110)

Default value -105 dBm

Default value notes -

Required on Creation optional

Related functions -

Modification Online

Modified -

Related parameters -

Parameter relationships -

Related options -

Related features -

Interfaces•RACApp <-> RAC•Planner <-> RAC•RAC <-> Optimizer•RAC <-> BSC

References •3GPP Reference: 44.018, 45.008

MML Commands EQG, EQO

MML Abbreviated Name RXP

MML Full Name rxlev access min

Segment Level Parameter true

File Based Provisioning supported true

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PRFILE, FIFILE and PAFILE parameters

• PRFILE (General Parameter File)– Standard features

– Optional features

– Interrogate with MML command ZWOS

• FIFILE (Feature Information Control File)– Stores optional parameters from the PRFILE

– Interrogate with MML command ZWOI

• PAFILE (BSC Control Parameter File)– GSM-BSC parameters

– GSM Timers

– Interrogate with MML command ZEGO

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Features & Activation status

ZWOS command

ZWOI command

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GSM-BSC Parameters & Timers

ZEGO command

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Viewing parameters Using NetAct CM Editor

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Viewing parameterswith MML Commands in BSC

ZEQO Output

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Exporting parametersUsing NetAct CM Ops Manager

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New objects & parameters

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Call Phases (MOC case)

MS BTS BSC

AUTHENTICATION (SDCCH)Phase 2 : MM signalling

CIPHERING MODE (SDCCH)Phase 8 : Ciphering

TMSI REALLOCATION (SDCCH)

SETUP (SDCCH)

Phase 2 : MM signalling

CH. REQUEST (RACH)

IMMEDIATE ASSIGN(AGCH)

SERVICE REQUEST (SDCCH)

Phase 1 : Paging, initial MS

CH.RELEASEPhase 4 : Release

ALERTING & CONNECT (FACCH)

Phase 2 : MM signalling

CONN. ACK. and MEASUREMENTPhase 15 : Conversation

DISCONNECT & RELEASE (FACCH)

Phase 4 : Release

ASSIGNMENT (SDCCH-FACCH)Phase 3 : Basic assignment

• Signalling procedures are used during the 15 phases in a basic call

• Certain parameters influence the setting up and the release of a call