Apparatus and method for communication network

A method performed by a control apparatus, comprising:

• determining a control value to be supplied to a node in a communication network so as to achieve a setpoint of Quality of Service (QoS) performance required by a traffic flow transferred through the communication network, the control value causing the node to adjust allocation of network resources to the traffic flow,
• wherein the QoS performance is end-to-end latency between a sender end node and a receiver end node of the traffic flow, target throughput of the traffic flow, or an acceptable delay for the communication network, and
• wherein the setpoint is a target value of the end-to-end latency, target throughput, or acceptable delay;
• monitoring a traffic-related parameter regarding the traffic flow, wherein the traffic-related parameter is a size of data to be sent per communication event or a parameter that changes as the size of data to be sent per communication event changes;
• acquiring a control delay between the control apparatus and the node;
• and
• correcting the control value based on the control delay and on a trend in changes in the traffic-related parameter.

A non-transitory computer readable medium storing a program for causing a computer to perform a method performed by a control apparatus, the method comprising:

• determining a control value to be supplied to a node in a communication network so as to achieve a setpoint of Quality of Service (QoS) performance required by a traffic flow transferred through the communication network, the control value causing the node to adjust allocation of network resources to the traffic flow,
• wherein the QoS performance is end-to-end latency between a sender end node and a receiver end node of the traffic flow, target throughput of the traffic flow, or an acceptable delay for the communication network, and
• wherein the setpoint is a target value of the end-to-end latency, target throughput, or acceptable delay;
• monitoring a traffic-related parameter regarding the traffic flow, wherein the traffic-related parameter is a size of data to be sent per communication event or a parameter that changes as the size of data to be sent per communication event changes;
• acquiring a control delay between the control apparatus and the node;
• and
• correcting the control value based on the control delay and on a trend in changes in the traffic-related parameter.