LTE Tutorials and Call Flows
Long Term Evolution signaling flows and tutorials for LTE protocol layers
LTE Call Flows
LTE Tutorial Presentation LTE presentation with audio narration. OFDM basics, LTE channels, signaling procedures and MIMO are covered.
LTE Identifiers Presentation LTE signaling protocol define a large number of identifiers for UEs, RABs and signaling endpoints.
The presentation covers the IMSI, GUTI, GUMMEI, IMEISV, RNTI, TAI and APN.
LTE Medium Access Control (MAC) Presentation Learn about the MAC layer. The logical, transport and physical channels are described. Signaling flows for
random access and data transfer are also covered.
LTE Radio Link Control (RLC) Presentation Covers Transparent Mode (TMD), Unacknowledged Mode (UMD) and Acknowledged Mode (AMD).
RLC state variables and PDU formats are also described.
LTE Packet Data Convergence Protocol (PDCP) Presentation Robust Header Compression (ROHC) and PDCP PDU formats are covered.
LTE Security Presentation Authentication, Integrity Protection and Encryption. Generation of keys during LTE signaling procedures.
LTE RRC Connection Setup Messaging Presentation Describes the RRC connection signaling procedure with detailed description of the RRC message contents.
Attach and Default Bearer Setup Messaging Presentation Messages involved in LTE attach and default bearer setup are described in detail.
X2 Handover Messaging Presentation Messages involved in LTE X2 Handover are explored in detail.
LTE/EPC Medium Blog Posts