Service combination reconstruction method under dynamic network environment

Abstract

The invention discloses a service combination reconstruction method under a dynamic network environment. According to the invention, at a phase of execution of service combination, a family of cost functions is combined and real-time tracking is carried out on a suboptimal path by a client node by a low-flow pseudo service flow mode; and on the basis that a reason of a service failure is determined by a detection method during interruption of a service, a crosslevel decision algorithm decides to execute route restoration at a substrate network or / and execute service replacement in a service network. The concrete process is as follows: a reason on service combination interruption is detected and identified at full speed; a link interruption module is detected by an IEEE802.11ACK frame module at a mechanism substrate, a route interruption module is detected by a handshake mechanism module at a route layer and a service interruption module is detected by a node time efficient module at a service layer; service combination reconstruction is divided into two levels; on the condition that the service combination is failed, a cross level service combination reconstruction module decides to execute route restoration at a substrate network or / and to execute service replacement in a service network.

Description

technical field [0001] The invention belongs to the technical field of network services, and in particular relates to a method suitable for providing continuous, high-quality services for the network when the network topology is highly unstable, when the network topology changes rapidly and nodes and links fail frequently. Service Composition Reconstruction Method in Dynamic Network Environment of Service Composition. Background technique [0002] With the rapid development of computer technology and network technology, the widespread popularization of dynamic network has brought great changes to human life style, and opened up a new research field of service science based on dynamic network. In contrast, the more core service composition technology in service science has not been deeply studied due to its strong interdisciplinary nature, and has become a bottleneck hindering the development of service science in a dynamic network environment. Different from the traditional...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for rebuilding service composition in a dynamic network environment, which overcomes the above-mentioned shortcoming of low service composition reconstruction speed and solves the service composition failure problem caused by the dynamic network environment; it can quickly and accurately identify Under the premise of service combination interruption reasons, quickly select the optimal method to rebuild the service combination

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