Configured grant based multi-TRP

An apparatus comprising:

• at least one processor;
• and
• at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to:
• receive at least one configuration message;
• determine at least a first uplink resource associating to a first configured grant configuration and a second uplink resource associating to a second configured grant configuration based on the at least one configuration message;
• generate a transport block;
• transmit the transport block on the first uplink resource associating to the first configured grant configuration via a first channel;
• and
• transmit the transport block on the second uplink resource associating to the second configured grant configuration via a second channel, wherein the first configured grant configuration is different to the second configured grant configuration, and wherein the first channel is different to the second channel,
• wherein one or more timers reserve first uplink resources associating to a first configured grant configuration for re-transmission of the transport block via the first channel and reserve second uplink resources associating to a second configured grant configuration for re-transmission of the transport block via the second channel,
• wherein separate buffers are available for each timer for storing the transport block, and
• wherein where more than one buffer is used to store the transport block, the buffers are cleared independently in dependence upon their respective timers or the buffers are cleared together in dependence upon one of the respective timers.