Tsinghua University

Youjian Zhao

Ke Xu

Wenlong Chen

Yuchao Zhang

Meng Shen

Fan Yang

Yi Qu

Yifeng Zhong

The present disclosure provides a method and system for detecting normalization of forwarding behavior of a router in a core routing area. The method includes: obtaining data flow received by ports of a core router; performing matching check to the data flow according to the data flow state table; if the data flow does not match the data flow state table, checking state of the data flow to calculate a state check result S(i); determining whether the data flow state table needs to be updated, if yes, updating the data flow state table; and determining whether the state check result S(i) is a trigger state, if yes, calculate state r of the forwarding behavior of the core router, and determining whether the forwarding behavior of the core router is abnormal according to the state r of the forwarding behavior of the core router, if yes, generating an alert log.

Method and system for detecting normalization of forwarding behavior of router in core routing area

A programming method and a programming apparatus for a core routing and switching system are provided. The method includes: obtaining a number of routing nodes and a number of resource types in each routing node in the core routing and switching system; judging whether a first requirement for resources in the routing nodes is changed to a second requirement; judging whether resources in a first routing node group corresponding to the first requirement meet the second requirement if the first requirement is changed; searching for a plurality of second routing node groups with resources meeting the second requirement if the resources in the first routing node group do not meet the second requirement; calculating a plurality of migration overheads corresponding to the plurality of second routing node groups; selecting a second routing node group corresponding to a smallest migration overhead from the plurality of second routing node groups.

Programming method and apparatus for core routing and switching system

A channel allocation method based on Shapley value in wireless networks is provided. The method comprises: disclosing by a PU (primary user) some idle channels denoted by serial numbers, a utilization rate threshold, a lowest selling price, and an increment between two bidding prices; SUs (secondary users) reporting the corresponding numbers of required channels to the PU; calculating a plurality of legal teams satisfying the utilization rate threshold; classifying the plurality of SUs; calculating the Shapley value of each SU in each legal team; calculating an estimated price of each multi-user in each legal team; determining the retained legal teams; performing an ascending auction process by the retained legal teams; and allocating the channels to the SUs in the winning team.

Channel allocation method based on shapley value in wireless networks

A method for saving energy for a wireless sensor network is provided, comprising: introducing a high energy device; defining a sensor node within a coverage of the high energy device as a source node or a forwarding node by the high energy device based on a routing relationship; sending sensed data to the high energy device by the source node at any time; and selecting a forwarding node at a working time to forward the data by the high energy device while making the other forwarding nodes at a dormancy time.

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Beijing, China

Youjian Zhao