Prashant Panigrahi

The STATUS PDU is used to exchange status information between two RLC AM entities.

In this tutorial following topics are discussed:

• What is SUFI RLIST?
• Different fields in the SUFI RLIST
• Example with encoding details

This tutorial describes the UMTS RLC SUFI LIST.

In this tutorial following topics are discussed:

• What is SUFI LIST?
• Different fields in the SUFI
• Example with encoding details

The STATUS PDU is used to exchange status information between two RLC AM entities.

In this tutorial following topics are discussed:

• Why STATUS PDU is required?
• Status PDU Parameters
• Different type of SUFIs
• SUFI ACK described with an example

Entity authentication is the procedure of mutual authentication of UE or USIM and the network.

In this tutorial following topics are discussed:

• What is Entity Authentication?
• Authentication Vectors Generation
• Authentication Procedure
• Message sequence from UE point of view

This tutorial describes about the MAC PDU structure when HS-DSCH and E-DCH transport channel are not used.

MAC PDUs are also called the MAC Transport Blocks (TB). MAC PDU is a bit string. The MAC PDU is consists of the MAC header and the MAC SDU (RLC PDU)

The Length Indicator is used to indicate, each time, the end of an SDU occurs in the PDU. The Length Indicator points out the number of octets between the end of the last Length Indicator field and up to and including the octet at the end of an SDU segment.

This tutorial gives detail description about RLC AM and UM data PDU encoding.

The security architecture in UMTS is divided into four main parts:

1. User identity confidentiality
2. Entity authentication
3. Data integrity
4. Ciphering or confidentiality

In this tutorial User identity confidentiality is covered.