Is mobility in 5G different from 4G?
My friend: Hi Ibrahim, I have a question for you.
Me: Please, go ahead.
My friend: I was wondering if mobility in 5G differs from 4G or they are the same?
Me: Actually, it is different little a bit.
My friend: But, how are they different?
Me: In 4G we have mainly mobility between cells, while in 5G we’ve mobility between cells and beams which is called beam switching as well. So, both the 5G BTS and UE must be capable of changing beams as the radio conditions change.
My friend: But, how beam and cell mobility are done in 5G?
Me: Beam switching is done inside each cell which is called intra-cell mobility which requires layer 1 and layer 2 procedures. While, mobility between cells or what is called inter-cell mobility involves a handover which requires layer 3 procedures. Cell level measurements can be the average of different beams measurement or the value of the strongest beam depending on the algorithm used by each vendor.
My friend: Thanks a lot. You made it clear.
Me: You are most welcome.
From Ibrahim Sayed
URL = https://www.linkedin.com/in/ibrahim-sayed-88a7747-5g/