摘要:
A transmission system, having a plurality of delivery server side routers which communicate with a plurality of delivery servers for delivering a content; and a client side router which communicates with a client device for receiving the content, is configured to include: a database for storing server load states of the plurality of delivery servers, and respective individual link load states for a plurality of delivery paths between the plurality of delivery server side routers and the client side router; and a path control unit for determining a minimum load state delivery path having a minimum load state among the plurality of delivery paths, based on sums of the server load states and the respective individual link load states stored in the database.
摘要:
A statistical value update unit calculates the fluctuation of measurement data. A filtering processing unit extracts a normal white noise component from the fluctuation of the measurement data using an adaptive lattice filter. A statistical test unit determines whether or not the variance of the normal white noise component is out of a predetermined scope in reference distribution. A change decision unit detects a stationary change of the status of a target system based on a detection ratio of an outlier.
摘要:
A statistical value update unit calculates the fluctuation of measurement data. A filtering processing unit extracts a normal white noise component from the fluctuation of the measurement data using an adaptive lattice filter. A statistical test unit determines whether or not the variance of the normal white noise component is out of a predetermined scope in reference distribution. A change decision unit detects a stationary change of the status of a target system based on a detection ratio of an outlier.
摘要:
Disclosed is a QoS guaranteeing method on a network path across a plurality of domains, among QoS servers linking the domains included in each of a plurality of domains, the QoS server included in the domain defined as a QoS guaranteeing resource request source performing the steps of generating a QoS guaranteeing resource request message; sending the generated QoS guaranteeing resource request message to the QoS server managing the next domain on the path; and if resources can be reserved in all the domains on the path as a result of the QoS guaranteeing resource request of the QoS guaranteeing resource request message, managing the resources for the obtained QoS guarantee on the path from the next domain to the domain where a destination network address belongs.
摘要:
A transmission system, having a plurality of delivery server side routers which communicate with a plurality of delivery servers for delivering a content; and a client side router which communicates with a client device for receiving the content, is configured to include: a database for storing server load states of the plurality of delivery servers, and respective individual link load states for a plurality of delivery paths between the plurality of delivery server side routers and the client side router; and a path control unit for determining a minimum load state delivery path having a minimum load state among the plurality of delivery paths, based on sums of the server load states and the respective individual link load states stored in the database.
摘要:
A QoS information notification method for transmitting QoS information over a multi-domain network includes steps of: (a) a first inter-domain signaling apparatus 11A transmitting QoS information to a first communication apparatus 13A; (b) the first communication apparatus 13A transmitting the received QoS information to a second communication apparatus 13B; (c) the second communication apparatus 13B transmitting to a second inter-domain signaling apparatus 11B the received QoS information and a route through which the received QoS information has passed; and (d) the second inter-domain signaling apparatus 11B associating the received QoS information with the received route.
摘要:
A QoS information notification method for transmitting QoS information over a multi-domain network includes steps of: (a) a first inter-domain signaling apparatus 11A transmitting QoS information to a first communication apparatus 13A; (b) the first communication apparatus 13A transmitting the received QoS information to a second communication apparatus 13B; (c) the second communication apparatus 13B transmitting to a second inter-domain signaling apparatus 11B the received QoS information and a route through which the received QoS information has passed; and (d) the second inter-domain signaling apparatus 11B associating the received QoS information with the received route.
摘要:
A service quality management device, preventing deterioration of a quality of a communication service provided on a network while effectively utilizing network resources by managing the quality of the communication, comprises an information acquiring unit acquiring service information containing information about each of sessions for the communication service and the network configuration information, an information generation unit generating a traffic volume of each of the sessions, a route determination unit determining a packet route for each of the sessions based on the respective information, a calculation unit calculating a traffic volume and a load of each of the links based on the traffic volume of each of the sessions and the packet route for each of the sessions, and a quality judging unit judging a quality of service actualized by each of the sessions based on the calculated load of each of the links.
摘要:
When receiving a streaming service from a service provision server, a user terminal wants QoS assurance and issues a QoS request to a QoS control server together with a communicate request to a network. In this case, by including information about a plurality of access networks that the user terminal can access in a QoS request message, a QoS control server can optimally allocate resources in the current environment of the user terminal and assure. QoS. In this case, the format of this QoS request can accompany a communicate request from the user terminal or be independent of the communicate request.
摘要:
A service quality management device, preventing deterioration of a quality of a communication service provided on a network while effectively utilizing network resources by managing the quality of the communication, comprises an information acquiring unit acquiring service information containing information about each of sessions for the communication service and the network configuration information, an information generation unit generating a traffic volume of each of the sessions, a route determination unit determining a packet route for each of the sessions based on the respective information, a calculation unit calculating a traffic volume and a load of each of the links based on the traffic volume of each of the sessions and the packet route for each of the sessions, and a quality judging unit judging a quality of service actualized by each of the sessions based on the calculated load of each of the links.