What is the difference between seamless and lossless handover ?

Question

I came through these terms like seamless and lossless handover, what is the significance's in these type of handovers and when these thing happens?

Answer 1

The names are not very intuitive :(.

seamless handover is used for bearers transporting traffic that is very sensitive to delay and jitter and would rather accept packet loss/retransmission than delay, like VoIP.
While the lossless handover is used for bearers that transport traffic that does not care too much about delay but is sensitive to retransmissions, like FTP and HTTP.

Answer 2

As per my knowledge, seamless and lossless handover depends on the type bearer.
For example: Bearer used for FTP, uses lossless whereas bearer used for VoIP uses seamless handover.
Since FTP packet are large and it consumes more radio resources in case of re-transmission. where as VoiP packet are small and re-transmission of those small packet will not consume more radio resource.