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Huawei H31-421-ENU Exam Syllabus Topics:

Section	Weight	Objectives
eNodeB Configuration and Maintenance	13%	- eNodeB Operations 1. Parameter Planning 2. Routine Maintenance 3. Performance Monitoring 4. Configuration Management
LTE Air Interface	30%	- Radio Interface Protocols 1. Cell Search Procedures 2. LTE Radio Interface Protocols 3. Uu Interface - LTE Physical Layer 1. Channel Structure 2. Physical Channels 3. Reference Signals 4. Physical Signals 5. Frame Structure - Radio Interface Techniques 1. SC-FDMA Principles 2. Spectrum Usage 3. Transmission Modes 4. OFDM Principles
LTE Advanced Troubleshooting	30%	- Fault Analysis 1. Radio Network Problem Diagnosis 2. Interworking with 2G/3G Networks 3. Troubleshooting Procedures - Network Optimization 1. Capacity Optimization 2. Coverage Optimization 3. KPI Analysis 4. Radio Network Performance Optimization
LTE Signaling and Protocols	27%	- Protocol Layers 1. X2AP Functions and Procedures 2. RRC Structure and States 3. RLC Functions and Modes 4. MAC Functions and Architecture 5. PDCP Operations - EPS Architecture 1. EPS Network Elements 2. EPS Protocols 3. EPS Signaling 4. EPS Interfaces - Radio Bearers and Channels 1. E-UTRAN Channel Mapping 2. E-UTRA Radio Bearers 3. EPS Bearer Services