[TBD]Understand 4g LTE

LTE Attach

It talks about flow for establishing internet connection from mobile device to internet

• It talks about establishing tunnel between tower (e-NS) and S-GW.

• First time tower asks the MME for getting route to internet. It is called control channel

• After tunnel establish, data packet goes via this tunnel

• IP address once assigned to mobile device remain same until mobile internet is made of. It is for ensuring that TCP connection remains on mobility

  • IP address assigned to mobile device must be in the same subnet of P-GW. It is because there is a static route between tower and the P-GW and this ask is based on the requirement of this route.

Ref: https://youtu.be/5yZDbg5iKM8?list=PLgQvzsPaZX_bimBc5Wu4m6-cVD4bZDav9

Reference

Madhu