Method and device for selecting the radio connection control protocol data unit size.
A method and device are used to create RLC PDUS ahead of the E-TFS selection for the MAC PDU which will include this, or these, RLC PDU (s). The device can be configured to pre-generate RLC PDUs for transmission at a later TTI. This approach avoids the need for large processing spikes, due to the requirement of extreme delay if any RLC PDU should be included in a MAC PDU should be created after determining the size of that MAC PDU, that is, after selecting E- TFS. The method and the device maintains an approximate equality between the size of an RLC PDU and the size of the MAC PDU in which it is included. Maintaining this next equality ensures that PDU RLC errors due to residual H-ARQ errors remain low. This approach can be called semi-radio aware or delayed radio aware.