LTE has a concept of default bearer while UMTS is not, want to know the details why the default bearer concept been added to LTE and what is the value it is adding to the overall system.
Default bearer is used in lte to provide IP connectivity even if UE is in RRC Idle state when UE and enodeb doesn't have radio connection. Default bearer in a Non-GBR(non guaranteed bit rate) I means there is no radio resource reservation is required in case when no data is flowing through default bearer. one more advantage of keeping default bearer wrt network if default bearer is going to be deleted then all the dedicated bearer associated with that default bearer would be removed at a one shot.
what is difference between scheduling resource concepts and algorithms in LTE and UMTS HSPA+?
what is scheduling scenario for of nodeb-RNC and enode if you provide us with signalling message and mapping channels
I am looking at some document for interoperability between WLAN and LTE/UMTS. Any pointer would be good.