I'm new to telecommunication, and from what I understand, an user equipement is either connected to a LAN router or an eNodeB, and a LAN router is connected to a WAN router, and routers send the packets to the correct destination with a routing table. The part that I don't understand is how does all this work with IP/TCP? Let's say UE1 is a stationary device connected to a LAN router and sends a message to UE2, which is a mobile device connected to an eNodeB, how would that work? As far as I understand :
- UE1 sends a message to the LAN router
- the LAN router sees that the message is not intended for the local network, and sends the message to the corresponding WAN router.
- the WAN router sends that message to the corresponding eNodeB
- the eNodeB sends the message to UE2
Is this correct? Also, is I understand correctly, an eNodeB is basically a bounch of antennas with some software that can send/receive data from UEs in it's covered area, and a router does pretty much the same thing, so what are the differences between the 2 in terms of functionality (except that the eNodeB covers a wider area)?