Flexible RLC PDU Size was interdicted in Release 7 in order to decrease RLC protocol overhead and to avoid sequence number stalling

Flexible RLC is used with MAC-ehs in Release 7. Mac-ehs is a new feature interdicted in Release 7 to increase the downlink throughput.

UMTS-RLCDecoder is small but powerful tool for decoding RLC header information both for Acknowledged Mode RLC PDUs and Unacknowledged Mode RLC PDUs.

It Can decode the following

• RLC AMD PDU Header and Length Indicator
• RLC Control PDUs including SUFIs
• RLC UMD PDU header and Length Indicator

Whenever PLMN has been selected by NAS, the UE shall attempt to camp on the selected cell. This tutorial tells how a particular cell is selected.

High Speed Uplink Packet Access (HSUPA) is introduced in 3GPP Release 6 standards to improve the uplink UE data rate which was significantly low up to Release 5. To improve the uplink data rate some new functionality are added:

1. New MAC entities: MAC-e/es in UE and MAC-e in NodeB and MAC-es in RNC.
2. Transport channel: E-DCH
3. Physical channels: E-DPDCH/DPCCH, E-HICH, E-RGCH, E-AGCH
4. Transmission Time Interval: 2 ms or 10 ms
5. SF = 2 can be used
6. Fast Layer 1 transmission and retransmission
7. Hybrid- ARQ using soft combining and incremental redundancies
8. NodeB control grants or data rate
9. New Frame Protocol in Iub/Iur interface (E-DCH FP)

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

SRNS relocation is a procedure used during mobility scenarios when Control of the Serving Radio Network Subsystem (SRNS) is changed to another Radio Network Subsystem (RNS)

In this tutorial following topics are discussed:

• Relocation Procedure
• Serving RNS Relocation Procedure
• Combined Hard Handover and SRNS Relocation Procedure

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)