Transmission controlling method, sender apparatus and receiver apparatus for wireless communication system

A transmission controlling method for a wireless communication method wherein a plurality of data blocks can be transmitted from a sender apparatus having a plurality of sending antennas to a receiver apparatus, wherein:

• the sender apparatus determines to perform a decrease control decreasing the number of transmission sequences, and
• delays, when the decrease control is determined, a timing of performing the decrease control based on an amount of unsent data in a transmission sequence not to be used after performing the decrease control.

A receiver apparatus for a wireless communication system wherein a plurality of data blocks can be transmitted from a sender apparatus having a plurality of sending antennas to the receiver apparatus, wherein:

• a reception section adapted to receive a data block with which data block identification information is associated for each of the plural data blocks by the sender apparatus and which is sent from the sender apparatus, wherein the data block identification information is based on a predetermined rule shared between the sender apparatus and the receiver apparatus, by which the data block identification information is not competitive between the data blocks;
• and
• a combining section adapted to carry out, based on the data block identification information associated with the received data block received by said reception section, a combining process for the data block received already and a re-sent data block with both of which the same data block identification information is associated.