I have a 3 part question
1) How does the EnodeB know if the user equipment supports carrier aggregation or not?
2) If a UE does not support carrier aggregation does it mean it’s a Release 9 or lesser compliant UE?
3) If the answer to question 2 is yes , then how does the UE not supporting carrier aggregation(release 9 or lesser UE) decode a DCI message sent from a EnodeB that is currently supporting LTE A(Release10) , as the DCI message (say DCI format 0) contains extra bits?