TB size mismatch during a random-access procedure

A method performed by a UE, the method comprising:

• receiving, via a receiver, a random access response message from a base unit during a random-access procedure, wherein the random access response message grants an uplink resource allocation;
• determining whether there is a size mismatch between a stored transport block (“TB”) and the uplink resource allocation, wherein the stored TB comprises at least one radio link control (“RLC”) protocol data unit (“PDU”);
• transmitting, via a transmitter, the stored TB in response to determining no size mismatch;
• and
• generating a new TB that matches the size of the uplink resource allocation in response to determining that there is a size mismatch,
• wherein generating the new TB comprises triggering, from the transmitter, autonomous radio link control (“RLC”) retransmission of each RLC PDU (“PDU”) contained in the stored TB, wherein the new TB contains at least a portion of the RLC retransmissions.

An apparatus comprising:

• a transceiver that receives a random access response message from a base unit during a random-access procedure, wherein the random access response message grants an uplink resource allocation;
• and
• a processor that:
• determines whether there is a size mismatch between a stored transport block (“TB”) and the uplink resource allocation;
• transmits the stored TB in response to determining no size mismatch;
• and
• ignores the random access response message in response to determining a size mismatch,
• wherein the transceiver transmits a random-access preamble in response to the size mismatch between the stored TB and the uplink resource allocation.