Next Generation Network (NGN)
In the NGN Architecture, it has two major parts namely WCS (Wireless Call Server) and MGW (Media Gateway). The real intelligent or call processing part is WCS. Different types of …
MPLS (Multi-Protocol Label Switching)
MPLS is a mechanism in high-performance telecommunications networks that directs data from one network node to the next based on short path labels rather than long network addresses, avoiding complex…
Why MPLS
For describing purposes lets divide Internet Service Providers into three categories. They are: · Layer 1 (e.g.: SLT) · Layer 2 (e.g.: Etisalat, Mobitel, Dialog) · Layer 3 (not present in Sri Lanka)…
Drive Test
Drive Test will ensure the network performance and it is directly related to the QoS of the network. Normally drive tests are conducted by Technical Officers (TO) under the guidance…
Abbreviations used in Telecommunication Industry
Here I have listed few Abbreviations that I came across during my training. · ANC - Antenna Network Combiner · ARFCN - Absolute Radio Frequency Channel Number · BBH - Base Band Hopping…
Software Defined Networking (SDN)
Moving the control function out of data plane elements is the main concept behind Software Defined Networking (SDN). Features · Decoupled Data and Control plane Can Evolve Independently · Can have…
Mobile Call Flow (Timing) Diagram
A timing diagram of a Call Flow is shown below. And a small description is also included after the image. Consider a situation where in a mobile telecommunication network Mobile…
Planning New Sites
Before setting up a new site RAN Engineers examine the area using Planning Tools and Maps (Google Map and Google Earth). They will obtain coverage predictions with the aid of…
Site Survey
Roof Top Site Survey Few steps involved in this process and they are listed below. · Visibility/Availability Due to nearby buildings some areas may not get covered. When signals gone through…
Network Statistics/ Quality of Service (QoS)
Categories of QoS are shown in the following Figure: QoS Categories. All the services provided to the subscribers through network are associated with the quality of service of the network. …
