2.1 Overall network architecture2.2 EPC architecture2.3 Roaming architecture and interworking with other networks2.4 E-UTRAN architecture2.5 E-MBMS architecture2.6 Positioning network architecture2.7 Mobility management2.8 Radio resource management2.9 Quality of service/quality of experience2.10 Security in E-UTRAN2.11 Support of voice and messaging services in LTE/LTE-Advanced2.12 LIPA, selected IP traffic offload, and IP flow mobility2.13 Mobile IP2.14 Network architecture evolution and small cellsReferences