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Timing Advance (TA) in LTE

Posted on 01. Sep, 2010 by agaur in Blog, Timing Advance, LTE

In GSM system MS sends its data three time slots after it received the data from the BTS.

Understanding CS Fallback in LTE

Posted on 27. Sep, 2009 by LteWorld in Blog, 3G, GSM, LTE, LteWorld

LTE technology supports packet based services only, however 3GPP does specifies fallback for circuit switched services as well.

LTE Handovers - Intra E-UTRAN Handover

Posted on 10. Apr, 2010 by LteWorld 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

Posted on 26. Mar, 2010 by LteWorld 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

Automatic Neighbour Relation in LTE

Posted on 20. Apr, 2010 by LteWorld in Blog, 3GPP, 2G, ANR, NR, 3G, LTE

Manually provisioning and managing neighbor cells in traditional mobile network is challenging task and it becomes more difficult as new mobile technologies are being rolled out while 2G/3G cells a

Carrier Aggregation for LTE-Advanced

Posted on 11. Dec, 2010 by agaur in Blog, 3GPP, LTE-Advanced, LTE

To meet LTE-Advanced requirements, support of wider transmission bandwidths is required than the 20 MHz bandwidth specified in 3GPP Release 8/9.

Evolution of Single Radio Voice Call Continuity (SRVCC)

Posted on 23. Dec, 2012 by agaur in Blog, aSRVCC, eSRVCC, GERAN, rSRVCC, SRVCC, vSRVCC, E-UTRAN, UTRAN, LTE

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).

LCS Architecture for LTE EPS

Posted on 07. Aug, 2010 by jai in Blog, E-SMLC, eNodeB, EPS, GMLC, SMLC, UE, EPC, LTE, MME

3GPP considered 5 architecture alternatives for LCS during study and selected the one explained further according to 3GPP Release 9.

LTE Security Principles

Posted on 18. Jul, 2009 by LteWorld in Blog, 3GPP, E-UTRAN, LTE, LteWorld, Security

The following are some of the principles of 3GPP E-UTRAN security based on 3GPP Release 8 specifications:

5GNR Reference Signals Measurement

Posted on 22. Jan, 2019 by Vivek in 5G NR, RSRP, RSRQ, RSSI

In 5G new radio (NR) system, reference signal measurement are used to perform cell selection, cell reselection and handover etc. Reference Signal (RS) measurements are further classified into three measurement parameters as given

Lawful Interception Architecture for LTE Evolved Packet System

Posted on 04. May, 2010 by LteWorld in Blog, EPS, HSS, Lawful Interception, PDN-GW, S-GW, LTE, MME

Lawful Interception is a legally sanctioned official access to private communications.

Introduction of Relay Nodes in LTE-Advanced

Posted on 18. Nov, 2012 by agaur in Blog, LTE-Advanced, Relay Node, LTE

For efficient heterogeneous network planning, 3GPP LTE-Advanced has introduced concept of Relay Nodes (RNs). The Relay Nodes are low power eNodeBs that provide enhanced coverage and capacity at cell edges. One of the main benefits of relaying is to provide extended LTE coverage in targeted areas at low cost.

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