| CPC H04W 28/0278 (2013.01) [H04L 1/1812 (2013.01); H04W 56/0045 (2013.01); H04W 72/56 (2023.01); H04W 74/0833 (2013.01); H04W 76/11 (2018.02); H04W 76/27 (2018.02)] | 12 Claims | 

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               1. A user equipment (UE) in a wireless communication system, the UE comprising: 
            a transceiver; and 
                a controller coupled with the transceiver, and configured to: 
                identify that a padding buffer status report (BSR) is triggered for padding bits, 
                  identify that a number of the padding bits is larger than a size of a short BSR medium access control (MAC) control element (CE) plus a first subheader of the short BSR MAC CE and the number of the padding bits is smaller than a size of a long BSR MAC CE plus a second subheader of the long BSR MAC CE, 
                  identify that more than one logical channel group has data available for transmission, and 
                  transmit, to a base station, a long truncated BSR MAC CE for at least one logical channel group among the more than one logical channel group, in case that the number of the padding bits is larger than the size of the short BSR MAC CE plus the first subheader of the short BSR MAC CE and the number of the padding bits is smaller than the size of the long BSR MAC CE plus the second subheader of the long BSR MAC CE, 
                wherein the at least one logical channel group is identified by following a decreasing order of a highest priority logical channel in each of the more than one logical channel group and an increasing order of logical channel group identifier in case of an equal priority. 
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