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Huawei H31-421-ENU Exam Syllabus Topics:

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