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Kiola nata
Kiola nata
Handset that you are holding is just a tip of iceberg. Network side is what enables you to call and browse. It enables operators to fine tune the network and the plans, they are also named BSS and OSS.
We enable users to make calls ( voice and data). Sounds simple but it's immensely complex. I will give an example of 2G network. (3G, LTE are similar networks but different)
I will give an example of 2G network to make it simple.
How are nodes connected in the network?
- Mobile->Base station-> Base station controller -> Mobile switching centre
Below is network diagram from wiki
How do they look in reality?
Base station looks like this, this is what you call 'tower' this node which covers particular geographical area, antennas are placed high above and the specialised computers which operate on raw data received by antennas are placed below or some far away location. There are other variations too. Typically it can cover about 30-35 kilometres.
Base station controller looks like this (this is about 6 feet): These BSCs control the behaviour of BTS above. BSC plays role in call handling. BSC knows from where call has come and where to redirect, finally receiver is also under coverage of another BTS. BSC 'establishes' and 'releases' calls (voice/data).
MSC and other nodes like HLR, VLR etc. looks similar to BSC but they do different things. They are just computers specially tailored to handle and manage calls (voice and data).
You can read more on each node's functionality on net. It's amazing and complex at same time.
At networks, we make these nodes mentioned above enable users to make calls ( voice and data). Apart from building these, challenges are how do we make different technologies (2G, 3G, LTE) work together, inter-operability, network planning, power optimization, operations and management.
Hence, as Krystel Arriane Cortez rightly said: we are expanding the human possibilities of the connected world.
Thank you for reading.
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