User equipment, network node and methods therein for determining transport block size in downlink transmissions in a telecommunications system

A user equipment for determining a transport block size, which transport block size is used by the user equipment in receiving downlink data transmissions from a network node which are frequency multiplexed with an enhanced Control CHannel, eCCH, the user equipment and the network node being comprised in a telecommunications system, which user equipment has access to a table of predetermined transport block sizes for different number of allocated radio resource blocks, PRBs, the user equipment comprising:

• processing circuitry configured to determine the transport block size from the table of predetermined transport block sizes based on at least an indicator NPRB defined based on a total number of PRBs allocated to the downlink data transmission N′PRB and based on a positive PRB offset value OPRB.

A method in a network node for determining a transport block size, which transport block size is used by the network node in transmitting downlink data transmissions to the user equipment which are multiplexed in frequency with an enhanced control channel, eCCH, the network node being comprised in a telecommunications system, which network node has access to a table of predetermined transport block sizes for a number of allocated radio resource blocks, PRBs, the method comprising

• determining, by the network node, the transport block size from the table of predetermined transport block sizes based on at least an indicator NPRB defined based on a total number of PRBs allocated to the downlink data transmission N′PRB and based on a positive PRB offset value OPRB.

A network node for determining a transport block size, which transport block size is used by the network node in transmitting downlink data transmissions to the user equipment which are multiplexed in frequency with an enhanced control channel, eCCH, the network node being comprised in a telecommunications system, which network node has access to a table of predetermined transport block sizes for a number of allocated radio resource blocks, PRBs, the network node comprising:

• processing circuitry configured to determine the transport block size from the table of predetermined transport block sizes based on at least an indicator NPRB defined by a total number of PRBs allocated to the downlink data transmission N′PRB and on a positive PRB offset value OPRB.