SAE-LTE Interfaces

If we refer to the figure we can see the following interfaces in the SAE- LTE architecture. A basic description of all the interfaces are provided in this post. Refer to  TS – 23401 for more details. S1-MME : Interface between the control plane protocol between E-UTRAN and MME. S1-U …

SGW – Serving Gateway

The SGW routes and forwards user data packets, while also acting as the mobility anchor for the user plane during inter-eNB handovers and as the anchor for mobility between LTE and other 3GPP technologies (terminating S4 interface and relaying the traffic between 2G/3G systems and PDN GW). For idle  state …

Handovers in LTE

In LTE the handover is carried out over the X2 interface. In case the X2 link is unavailable the S1 interface comes into picture for the handover. The handovers in the LTE have a new concept. Here is how the handover occurs in LTE The involved eNBs starts by agreeing …

SON-Self Organizing Network

The vision of self-organizing networks (SON) is that future radio access networks needs to be easier to plan, configure, manage, optimize and heal. This vision is in line with the views of 3GPP (3rd Generation Partnership Project) and the NGMN (Next Generation Mobile Networks) group.Ideally it means that just add …