QoS control middleware in integrated network, QoS control method, and the program for the same

A QoS control middleware, said QoS control middleware stored on a computer readable medium, executable by a computer, in an integrated network QoS control system including a bandwidth-guaranteed network, and a bandwidth-not-guaranteed network, said Qos control middleware comprising:

• a use bandwidth registration table for recording a remaining bandwidth of said integrated network including remaining bandwidths for each of said bandwidth-guaranteed network and said bandwidth-not-guaranteed network, and for comprehensively managing a bandwidth of said integrated network;
• a remaining bandwidth table capturer for capturing data representing a usable remaining bandwidth of said bandwidth-guaranteed network from a remaining bandwidth table on said bandwidth-guaranteed network;
• and
• a network status monitor for monitoring a traffic status of said bandwidth-not-guaranteed network and issuing the traffic information;
• a traffic candidate table for recording a candidate value for a traffic parameter which is stepwise decreased;
• and
• a QoS manager performing operations for:
• recording the remaining bandwidth of said bandwidth-guaranteed network captured by said remaining bandwidth table capturer and the remaining bandwidth of said bandwidth-not-guaranteed network calculated with traffic information notified by said network status monitor said use bandwidth registration table,
• mathematically converting a QoS parameter received from an application via a QoS request receiver into a traffic parameter,
• notifying said application of said traffic parameter,
• controlling the value of said traffic parameter so as to adapt a service quality required by said application, and
• controllably stepwise decreasing the value of a traffic parameter, by referring to said traffic candidate table, when the service quality required by said application cannot be provided in a current remaining bandwidth of said integrated network under control of the value of said traffic parameter.

A QoS control method in an integrated network including a bandwidth-guaranteed network and a bandwidth-not-guaranteed network, comprising the steps of:

• capturing a remaining bandwidth of said bandwidth-guaranteed network;
• obtaining a remaining bandwidth of said bandwidth-not-guaranteed network based on traffic information of said bandwidth-not-guaranteed network;
• managing and controlling the bandwidth and QoS of said integrated network based on a remaining bandwidth of said bandwidth-guaranteed network and the remaining bandwidth of said bandwidth-not-guaranteed network, using a use bandwidth registration table, said use bandwidth registration table being used to comprehensively manage the bandwidth of said integrated network;
• and
• controlling the value of a traffic parameter so as to adapt a service quality required by an application.

A computer-readable medium tangibly embodying a program of computer readable instructions executable by a bandwidth-not-guaranteed network terminal, on an integrated network including a bandwidth-guaranteed network and a bandwidth-not-guaranteed network, to have the functions of:

• a use bandwidth registration table for recording a remaining bandwidth of said integrated network including remaining bandwidths for each of said bandwidth-guaranteed network and said bandwidth-not-guaranteed network, and for comprehensively managing a bandwidth of said integrated network;
• a remaining bandwidth table capturer for capturing data representing a usable remaining bandwidth of said bandwidth-guaranteed network from a remaining bandwidth table on said bandwidth-guaranteed network;
• a network status monitor for monitoring a traffic status of said bandwidth-not-guaranteed network and issuing the traffic information;
• and
• a QoS manager performing operations for:
• recording the remaining bandwidth of said bandwidth-guaranteed network captured by said remaining bandwidth table capturer and the remaining bandwidth of said bandwidth-not-guaranteed network calculated with traffic information notified by said network status monitor to said use bandwidth registration table,
• mathematically converting a QoS parameter received from an application via a QoS request receiver into a traffic parameter,
• notifying said application of said traffic parameter,
• controlling the value of said traffic parameter so as to adapt a service quality required by said application, and
• controllably decreasing the value of the traffic parameter so as to obtain a necessary and minimum quality allowed by said application when the service quality required by said application cannot be provided in a current remaining bandwidth of said integrated network under control of the value of said traffic parameter.

A computer-readable medium tangibly embodying a program of computer readable instructions executable for brin in a bandwidth-not-guaranteed network terminal, on an integrated network including a bandwidth-guaranteed network and a bandwidth-not-guaranteed network, to have the functions of:

• a use bandwidth registration table for recording a remaining bandwidth of each of said bandwidth-guaranteed network, said bandwidth-not-guaranteed network, and said integrated network and comprehensively managing a bandwidth of said integrated network;
• a remaining bandwidth table capturer for capturing data representing a usable remaining bandwidth of said bandwidth-guaranteed network from a remaining bandwidth table on said bandwidth-guaranteed network;
• and
• a network status monitor for monitoring a traffic status of said bandwidth-not-guaranteed network and issuing the traffic information;
• a traffic candidate table for recording a candidate value for a traffic parameter which is stepwise decreased;
• and
• a QoS manager performing operations for:
• recording the remaining bandwidth of said bandwidth-guaranteed network captured by said remaining bandwidth table capturer and the remaining bandwidth of said bandwidth-not-guaranteed network calculated with traffic information notified by said network status monitor to said use bandwidth registration table mathematically converting a QoS parameter received from an application via a QoS request receiver into a traffic parameter,
• notifying said application of said traffic parameter,
• controlling the value of said traffic parameter so as to adapt a service quality required by said application, and
• controllably stepwise decreasing the value of the traffic parameter, by referring to said traffic candidate table, when the service quality required by said application cannot be provided in a current remaining bandwidth of said integrated network under control of the value of said traffic parameter.

A computer-readable medium tangibly embodying a program of computer readable instructions executable for bringing a bandwidth-not-guaranteed network terminal, in an integrated network including a bandwidth-guaranteed network and a bandwidth-not-guaranteed network, to have the function of a QoS control middleware including:

• capturing a remaining bandwidth of said bandwidth-guaranteed network;
• computing a remaining bandwidth of said bandwidth-not-guaranteed network based on traffic information of said bandwidth-not-guaranteed network;
• managing and controlling the bandwidth and QoS of said integrated network based on a remaining bandwidth of said bandwidth-guaranteed network and the bandwidth of said bandwidth-not-guaranteed network, using a use bandwidth registration table, said use bandwidth registration table being used to comprehensively manage the bandwidth of said integrated network;
• and
• controlling the value of a traffic parameter so as to adapt a service quality required by an application.