BSS Testing and Commissioning – GSM and WCDMA

Course Contents

Day 1 (7 hours) • GSM/WCDMA RAN Basic Principle • Network Architecture of GSM and WCDMA • Common Hardware Knowledge of BSC/RNC and BTS/NodeB

Day 2 (7 hours) Hands on BTS • Negotiation parameter for BTS/NodeB and BSC/RNC Commissioning • Hands on BTS integration using CDMA BSC and BTS • Verification BTS integration

Course Objectives • Explain GSM/WCDMA Principle • Understand Network Architecture of GSM/WCDMA • Understand common hardware function in BTS/NodeB and BSC/RNC • Explain RAN Commissioning process • Identify negotiation parameters for BTS/NodeB integration • Verify service after integration

Network Architecture GSM and WCDMA

WCDMA GSM

Carrier spacing 5 MHz 200 KHz

Frequency reuse coefficient 1 1-18

Power control frequency 1500 Hz 2 Hz or lower

QoS control Through the RRM algorithm Through network planning (frequency planning)

Frequency diversity The 3.84 MHz bandwidth enables the air interface to use the rake receiver for multipath diversity.

Frequency hopping

Packet data Load-based packet scheduling Timeslot-based scheduling in GPRS

Downlink transmit diversity Supported by the protocol to improve downlink capacity

Not supported by the standard but can be applied.

Differences between GSM and WCDMA

LTE Key Feature

• Data Rate - Up to 100 Mbps downlink - Up to 50 Mbps uplink

• Packet Data - Low Latency (real time services) - User Plane < 5ms, control plane <50ms

• Flexible Frequency - FDD-TDD-Variable bandwidth (Scalable bandwidth of 20, 15, 10, 5, 3 and 1.4MHz)

• All IP backbone (Flat, scalable IP based architecture) • Multibeam Transmission

RAN Commissioning Procedure

Preparation

Global Configuration

Synchronization configuration

Interface configuration

NodeB/BTS and RF Parameters configuration

Service Verification

End

Hardware Definition

Data collection, pre-commissioning.

MNC, MCC, RNC ID, BSC ID, LAC Etc

Subrack, Frame, Slot, Board, cable connection, etc

Synchronization source configuration

A interface, Iub, IuCS, IuPS, IuR, Abis, etc

Sector, Cell, power, Arfcn, Relation/neighbor, scrambling code, etc

Voice call, GPRS, HSDPA, Video call, sms, etc

To be happy in this world, first you need a cell phone and then you need an airplane. Then you’re truly wireless. Ted Turner www.systema.co.id