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