Hi,
Single LC BSR will leads to more signalling than the actual data transfer, to avoid more control information transfer LCG BSR is used. LCG grouping is based on the priority of those LC's, so same range priority LC's will have same LCG.
What could be the reason for defining logical channel grouping concept in LTE ? Why logical channels can't be used independently ?
If UE gets more than enough grant to send BSR and enough to send the data , then will UE sends BSR in the SR grant or not ?