rne basics
DESCRIPTION
GSM BASICTRANSCRIPT
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GSM NETWORK
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BTS ARCHITECTURE
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SMALL CONFIGURATIONS
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LARGE CONFIGURATIONS
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Antennas & Accessories
ANCG
BPFBPF
ANCD
DBC DBC
AA = Antenna
DBC = Dual Band Combiner
BPF = Band Pass Filter
ANCG = Antenna Network Combiner GSM
ANCD = Antenna Network Combiner DCS
CONCENTRIC CELL CASE
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GSM Frequency Band
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SWAP Activity
TEAMS INVOLVED & RESPOSIBILITIES
BSS Team : Installation & Commissioning of the BTS & making it On-Air
OMCR Team : Creation of the Site Hardware & Definition of Logical Radio Parameters
RNE Team : Preparation of Work Order for the Definition of Logical Radio Parameters & Validation of the Site Coverage, Quality , Radio Parameters after the site is On-Air
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SWAP Activity
SITE CLEARANCE
1 SITE FUNCTIONALITY : OMCR Team Responsibility
OMCR Team should check the alarms appearing in OMCR after the site is created & made On-Air by the BSS Team
OMCR Team should be available at OMCR until the site is finally cleared by RNE team
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SWAP Activity
SITE CLEARANCE
2 CALL SETUP TEST : BSS Team Responsibility
Case A: Call cannot be established Signal Level should be verified by checking VSWR Creation of LAC/CI should be verified at BSS & NSS ends
Case B: Call is established but NO AUDIO / VOICELESS calls Mainly Transmission problem
Case C: Call is established but voice quality is not good Mainly Radio Link problem
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SWAP Activity
SITE CLEARANCE
3 RADIO PARAMETERS VERIFICATION : RNE Team Responsibility
Radio Parameters are checked using the Drive Test tool for all the cells of the site so as to verify the implementation of the Work Order
Important Radio Parameters include: LAC, CI, BSIC, BCCH FREQ, TCH FREQs, MA LIST, HSN, MAIO
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SWAP Activity
SITE CLEARANCE
4 COVERAGE TEST : RNE Team Responsibility
RNE Team conducts Drive Test to check the DL Signal Level of all the sectors of the site
If Signal Level is not good ! Path Loss is occurring due to problem in Antenna,
Feeders, Lighting Arrestors, Dual Band Combiners & Band Pass Filters.
Jumpers are wrongly connected to the Feeders resulting in Cross-Sector or Cross-Feeder
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SWAP Activity
SITE CLEARANCE
5 QUALITY TEST : RNE Team Responsibility
RNE Team conducts Drive Test to check the DL Quality of all the sectors of the site
If Signal Quality is not good ! DL Level is not good DL Interference exists
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SWAP Activity
SITE CLEARANCE
6 HANDOVER TEST : RNE Team Responsibility
RNE Team conducts Drive Test to check the Neighbor Definition & execution of Handovers from all the cells of the site to neighboring cells & vice versa.
If Handovers are not occurring ! Neighbors Definition is not done by OMCR Team Site Hardware (mainly SUMA board) is malfunctioning
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SWAP Activity
SITE CLEARANCE
7 CSSR / CDR TEST : RNE Team Responsibility
RNE Team conducts Drive Test to check the CSSR (Call Setup Success Rate) and CDR (Call Drop Rate)
Automatic Call Setup feature of the Drive Test tool is activated and multiple calls are made for a certain duration (normally 1 minute) in all the 3 sectors.
Then the log file is analyzed for computing the CSSR & CDR
CSSR should not be less than 95% CDR should not be more than 2%
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SWAP Activity
SITE CLEARANCE
8 FINAL CLEARANCE : RNE Team Responsibility
RNE Team has to inform the BSS Team & OMCR Team that the site is properly integrated into the ALCATEL network.
IMPORTANT !!!
BSS Team & OMCR Team should not leave until the clearance is given by RNE Team
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