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Analyzing Coverage with Propagation Delay – PD and Timing Advance – TA (GSM-WCDMA-LTE)

One of the biggest challenges in Planning, Designing and even Optimization of Mobile Networks is to identify where the users are, or how they are distributed. Although this information is essential, it is not so easy to be obtained. But if we have and know how to use some counters related to this kind of analysis, everything is easier. For GSM, we have seen that we can have a good idea of the location... 

LCS (and LBS)

Probably you have already heard of LBS and LCS, but perhaps you did not associate those ‘names’ to the topic. And if you still do not work or deal with LCS/LBS, you will certainly do some day. Especially if you work in IT or Telecommunications area, where this subject is increasingly present. We’re talking about location services.   With the advance of services such M2M (Machine... 

Various Modes, States and Transitions in GSM, UMTS and LTE

Hello friends. Today we will talk about a very important issue for those working with mobile communications: what are the different modes and states that a mobile phone can take, as well as how the transitions occurs between each of them. The concept is simple, but the great amount of detail can end up making the topic an extensive or complex task. This ends up causing many people simply give up trying... 

RRC and RAB

To work with modern wireless networks such as UMTS and LTE, it is essential that the telecom professional has full understanding of its basic concepts, such as those that control the call establishment and maintenance, whether it is voice (CS) or data (PS). n this scenario, RAB and RRC are two of the most important concepts because they are responsible for all the negotiation involved in those calls. In...