Control of Reliability Target based Transmissions on LBT Carriers

A wireless device for operation in a wireless communication network, the wireless device comprising:

• at least one processor, and
• a memory containing program code executable by the at least one processor, the program code being configured such that execution of the program code by the at least one processor causes the wireless device to:
• determine a set of carriers, the carriers each requiring a listen-before-talk (LBT) procedure before transmitting on the carrier;
• determine a reliability target for a wireless transmission from the wireless device to the wireless communication network;
• depending on the reliability target, control aggregation of carriers from the set for redundantly performing the wireless transmission on the aggregated carriers.

An access node for a wireless communication network, the access node comprising:

• at least one processor, and
• a memory containing program code executable by the at least one processor, the program code being configured such that execution of the program code by the at least one processor causes the access node to:
• determine a reliability target for a wireless transmission from a wireless device to the wireless communication network;
• and
• determine a set of carriers, the carriers each requiring a listen-before-talk (LBT) procedure before transmitting on the carrier, to enable the wireless device to meet the reliability target by redundantly performing the wireless transmission on aggregated carriers from the set of carriers.