Wireless telecommunications network nodes, methods and computer program products are disclosed. A wireless telecommunications network node method, comprises determining a cause of a radio link failure which occurred when a user equipment is in proximity to an uplink-downlink imbalance region; and in response to the cause of the radio link failure, initiating action to optimize control of user equipment uplink-downlink decoupling-recoupling when in proximity to the uplink-downlink imbalance region. In this way, by establishing the cause of the radio link failure, it is possible to take action to alter the user equipment uplink-downlink decoupling-recoupling procedure in order to help prevent such radio link failures occurring in the future.