A network device , comprising: means for determining a set of metrics, each metric being related to quality of service, QoS, performance for a plurality of services in a cell in a measurement period; and means for determining access control barring, ACB, configuration in the cell based on comparison of the set of metrics with a set of thresholds; wherein the measurement period comprises a plurality of time intervals, and the means for determining the set of metrics is further configured for : determining at least a subset of metrics in the set of metrics at the end of a time interval of the plurality of time intervals; and comparing at least the subset of metrics with thresholds associated with at least the subset of metrics in the set of thresholds; wherein the means for determining the ACB configuration is further configured for: determining, based on the comparison of the at least one subset of metrics and the associated thresholds, whether requested QoS is achieved in the cell in the time interval; in response to determining that the requested QoS is unachieved, counting the time interval into a time period in which the requested QoS is unachieved in the cell ; and determining the ACB configuration based on the time period. means for determining a set of metrics, each metric being related to quality of service, QoS, performance for a plurality of services in a cell in a measurement period; and means for determining access control barring, ACB, configuration in the cell based on comparison of the set of metrics with a set of thresholds; wherein the measurement period comprises a plurality of time intervals, and the means for determining the set of metrics is further configured for : determining at least a subset of metrics in the set of metrics at the end of a time interval of the plurality of time intervals; and comparing at least the subset of metrics with thresholds associated with at least the subset of metrics in the set of thresholds; wherein the means for determining the ACB configuration is further configured for: determining, based on the comparison of the at least one subset of metrics and the associated thresholds, whether requested QoS is achieved in the cell in the time interval; in response to determining that the requested QoS is unachieved, counting the time interval into a time period in which the requested QoS is unachieved in the cell ; and determining the ACB configuration based on the time period. determining at least a subset of metrics in the set of metrics at the end of a time interval of the plurality of time intervals; and comparing at least the subset of metrics with thresholds associated with at least the subset of metrics in the set of thresholds; wherein the means for determining the ACB configuration is further configured for: determining, based on the comparison of the at least one subset of metrics and the associated thresholds, whether requested QoS is achieved in the cell in the time interval; in response to determining that the requested QoS is unachieved, counting the time interval into a time period in which the requested QoS is unachieved in the cell ; and determining the ACB configuration based on the time period. determining, based on the comparison of the at least one subset of metrics and the associated thresholds, whether requested QoS is achieved in the cell in the time interval; in response to determining that the requested QoS is unachieved, counting the time interval into a time period in which the requested QoS is unachieved in the cell ; and determining the ACB configuration based on the time period. <EOS>