E-UTRAN

Signalling in E-UTRAN: X2 Interface

in Tutorial, presentation, E-UTRAN, LTE

“Signalling in E-UTRAN/LTE” course focuses on signalling between EPS/LTE nodes within E-UTRAN. During the course all protocols and signalling procedures on all interfaces (i.e. Uu, X2 and S1) within E-UTRAN are presented in details. The course also describes overview of EPS architecture and system wide signalling procedures, including EPC - E-UTRAN interworking.

Evolution of Single Radio Voice Call Continuity (SRVCC)

in Blog, aSRVCC, eSRVCC, GERAN, rSRVCC, SRVCC, vSRVCC, E-UTRAN, UTRAN, LTE
SRVCC

Along with LTE introduction, 3GPP also standardized Single Radio Voice Call Continuity (SRVCC) in Release 8 specifications to provide seamless continuity when an UE handovers from LTE coverage (E-UTRAN) to UMTS/GSM coverage (UTRAN/GERAN).

Network Sharing in LTE

in Blog, E-UTRAN, 4G, eNB, LTE, MME

3GPP network sharing architecture allows different core network operators to connect to a shared radio access network.

X2 Application Protocol (X2AP)

in eNodeB, Specification, E-UTRAN, LTE, X2, X2AP

The X2AP protocol is used to handle the UE mobility within E-UTRAN and provides the following functions:

LTE UE Classes

in Blog, UE, E-UTRAN, GPRS, LTE, UMTS

UE class determines the speed at which data can be transferred in uplink and downlink directions. For GPRS & UMTS, most of us already are aware of it.

3GPP Release 11 Features and Study Items

in Blog, 3GPP, IMS, E-UTRAN, LTE

3GPP has already started work on Release 11. See objectives of features & study items from 3GPP Work Items below.

LTE Handovers - Intra E-UTRAN Handover

in Blog, Handover, Intra, Intra E-UTRAN Handover, SGW, E-UTRAN, eNB, LTE, MME

Intra E-UTRAN Handover is used to hand over a UE from a source eNodeB to a target eNodeB using X2 when the MME is unchanged. In the scenario described here Serving GW is also unchanged.

Measurements in LTE E-UTRAN

in Blog, ARFCN, Inter-frequency, Intra-frequency, Measurement, E-UTRAN, RRC, LTE

In LTE E-UTRAN measurements to be performed by a UE for mobility are classified as below

LTE UE positioning in E-UTRAN

in Blog, E-UTRAN, LTE, LteWorld

UE Positioning function is required to provide the mechanisms to support or assist the calculation of the geographical position of a UE.

LTE RAN architecture aspects

in Whitepaper, E-UTRAN, eHNB, LTE, LTE Advanced, MME, S1, X2

Presented by Dino Flore: RAN WG3 Chair, Qualcomm at a recent IMT-Advanced workshop, in Beijing, China

It has following contents

  • EPS architecture