Senin, 30 Maret 2009
Reverse Link Test Tool and Equipments
It is possible to analyze the system performance and trouble using above forward link analysis tool. It is important to check the logging mask according to the test objectives when collecting the data.
Reverse Link Test Tool and Equipments
Generally, SYSCAM is used to collect and monitor the reverse link data. Analyzing the SYSCAM Logging data, we can check the reverse FER, Measured Eb/No, Eb/No setpoint, FDCH/SCH Digital Gain.
| Tool/Equipments | Company | Main Functions |
| SYSCAM | Samsung | Collecting and monitoring the reverse link data for 1x |
| SCAT2000 | Samsung | Analyzing the logged data for 1x |
| SYSCAM_DO | Samsung | Collecting and monitoring the reverse link data for EVDO |
| SCAT2000_DO | Samsung | Analyzing the logged data for EVDO |
| Attenuator Box | - | Load reverse link by attenuating MS Tx pwr. |
| PC with LAN card | - | Test tool setup Interface between PC and System |
Single Cell Function Test (SCFT)
1.1 Test Tool and Equipments Descriptions
There are two types of test tool when performing the field test. It is composed of Forward Link Analysis tool and Reverse Link Analysis tool. The specification, manufacturer, quantity of each equipment will be provided in detail in separated document.
Forward Link test tool and equipment descriptions
Test tool and equipment are as follows when analyzing the data on the forward link.
| Tool/Equipments | Company | Main Functions |
| BlueRose | Will’ Tek | Mobile station monitoring and Data Logging tool on the forward link for 1x and EVDO. |
| IDA | Will’ Tek | Analyzing the logged data for 1x and EVDO. |
| Test Van | - | Test Tool setup and mobility |
| PC | - | Test Tool setup and Parameter change |
| Data cable | - | The interface cable between mobile and PC |
| Spectrum Analyzer | | BTS Transmit power measurement |
| Angle Detector compass | - | Antenna Installation Check |
Optimization Procedures
This document presents in detail optimization procedure for assuring effectively network quality. This procedure is based on Voice/Data call in cdma2000-1X and Data call in EVDO.
Optimization procedure shall be performed, when installation of BTS is completed and BTS is inter-worked with MSC. Commercial service shall be provided, after completion and trial service is offered, at the result of optimization procedure.
Optimization Procedures are divided into the following stages based on operational stage.
Ÿ Stage 1 : Single Cell Function Test
Ÿ Stage 2 : Cluster Optimization
Ÿ Stage 3 : System Optimization
Stage 1 : Single Cell Function test
Stage 1 is for verifying whether individual BTS works well or not, by making a single cell function test of BTS hardware and software.
Essential items to be tested are as follows:
1) BTS Transmitter Output Measurement Test
2) Initial parameter establishment (Pilot PN/System ID/Site ID/Frequency, Neighbor List)
3) Call Origination and Termination Test
4) Softer Handoff Test/Antenna installation check (Direction, Tilt, Transmission Line)
5) Single Cell Coverage Test
6) Noise Floor Test
Stage 2 : Cluster Optimization
Stage 2 is for testing several BTSs in cluster, in order to verify the inter-work and performance between BTSs. Stage 2 is aimed at checking basic field functions and performance in mobile communication system, assuring primary safety in system and network, and verifying conditions for maintaining the best quality of call and optimization in service aspects.
1) Basic Service Area Establishment
2) Voice Coverage Optimization
3) Data Coverage Optimization
4) FER optimization
5) Voice Handoff Optimization
6) Data Handoff Optimization
7) Shadow Area Optimization(if needed)
8) Pilot Pollution Area Optimzation(if needed)
Stage 3 : System Optimization Completion
Stage 3 is for verifying finally comprehensive performance in network.
Essential tests to be performed at stage 3 are as follows:
1) Call Quality Optimization
2) System Capacity test
