For carrier aggregation, Scell(s) need to be configured through RRC signaling. This may be done statically or dynamically (e.g. based on measurements of the SCell)
Scell activation/deactivation may be done dynamically by scheduler.
In case of Rel 10 supported(Carrier Aggregation) eNodeb, how does the enodeb decide as to through PDCCH of which cell UL Grant is sent ?
while performing carrier aggregation what parametes we need to configure at eNB side