After expiry is it mandatory to send BSR in next SF or can it be delayed for some reason ?
Once the BSR timer retxBSR-Timer expires & if UE has still data available for transmission, a new BSR(regular) is triggered, otherwise UE will wait for the new transmission.
If SR Resource is not configured then UE triggers RACH to acquire UL grant, but if RACH fails or fails to receive UL grant?
In normal case HARQ re- transmission will be 4 in UL, But What should be the ideal value if TTI bundling is enabled?