Method and apparatus for controlling service quality in communication system, and communication apparatus

A control apparatus in a communication system in which a logical path is established over a network to perform communication, comprising:

• a storage section that retains a control policy indicating an association between the logical path and service quality information;
• and
• a controller that is configured to sends a control policy change message to a communication apparatus that establishes the logical path, wherein the control policy change message indicates a change of the service quality information corresponding to the logical path to which a packet belongs, wherein the communication apparatus provides a packet to be transmitted with the changed service quality information in accordance with the control policy change message.

A communication apparatus in a communication system in which a logical path is established over a network to perform communication, comprising:

• a first section that is configured to receive a control policy change message from a control apparatus that retains a control policy indicating an association between the logical path and service quality information, wherein the control policy change message indicates a change of the service quality information;
• and
• a second section that is configured to provide a packet to be transmitted with the changed service quality information corresponding to the logical path to which the packet belongs in accordance with the control policy change message.

A method for controlling service quality in a communication system in which a logical path is established over a network to perform communication, comprising:

• retaining a control policy indicating an association between the logical path and service quality information;
• and
• sending a control policy change message to a communication apparatus that establishes the logical path, wherein the control policy change message indicates a change of the service quality information corresponding to the logical path to which a packet belongs, wherein the communication apparatus provides a packet to be transmitted with the changed service quality information in accordance with the control policy change message.

A non-transitory medium storing a program causing a control apparatus in a communication system in which a logical path is established over a network to perform communication, to execute the processing of:

• retaining a control policy indicating an association between the logical path and service quality information;
• and
• sending a control policy change message to a communication apparatus that establishes the logical path, wherein the control policy change message indicates a change of the service quality information corresponding to the logical path to which a packet belongs, wherein the communication apparatus provides a packet to be transmitted with the changed service quality information in accordance with the control policy change message.

A control method for a communication apparatus in a communication system in which a logical path is established over a network to perform communication, comprising:

• receiving a control policy change message from a control apparatus that retains a control policy indicating an association between the logical path and service quality information, wherein the control policy change message indicates a change of the service quality information;
• and
• providing a packet to be transmitted with the changed service quality information corresponding to the logical path to which the packet belongs in accordance with the control policy change message.

A non-transitory medium storing a program causing a communication apparatus in a communication system in which a logical path is established over a network to perform communication, to execute the processing of:

• receiving a control policy change message from a control apparatus that retains a control policy indicating an association between the logical path and service quality information, wherein the control policy change message indicates a change of the service quality information;
• and
• providing a packet to be transmitted with the changed service quality information corresponding to the logical path to which the packet belongs in accordance with the control policy change message.