7 results about "Virtual network mapping" patented technology

The invention relates to a virtual network mapping method based on double-agent reinforcement learning in a space division multiplexing elastic optical network, belongs to the technical field of communication, and aims to solve the problems of multidimensional resource allocation complexity, fiber core crosstalk and spectrum fragmentation in the space division multiplexing elastic optical network. According to the technical scheme, collaborative optimization mapping is carried out on virtual network requests by setting a link fiber core mapping agent and a frequency spectrum mapping agent, and the collaborative optimization mapping comprises the steps of initializing an underlying optical network topology and a virtual network topology, sorting virtual network sets according to the total bandwidth of the requests, embedding virtual links in a descending order, and executing physical node embedding and path searching. And the intelligent agent selects a link fiber core and spectrum allocation based on the network state feature matrix, and a model is trained through a reward mechanism to realize efficient resource matching. The technical effects are that the real-time performance and efficiency of virtual network mapping are obviously improved, the service blocking rate is reduced, the spectrum resource utilization rate is optimized, and the overall load capacity of the network is enhanced.

The application discloses a method, device and electronic equipment for virtual network mapping. The method comprises the following steps: receiving a virtual network mapping request for virtual network resource deployment, wherein the virtual network mapping request comprises resource requirement information of a virtual network; determining first physical resources matched with the resource requirement information from physical resources of a physical network; determining mapping costs corresponding to the first physical resources, wherein the mapping costs are used for quantitatively representing costs of mapping the virtual network to the first physical resources; determining second physical resources from the first physical resources according to the mapping costs, taking the second physical resources as target mapping points of the virtual network; and mapping the virtual network to the target mapping points. The application solves the technical problem of low resource utilization rate of an underlying device in a virtual network mapping request processing process.

The invention discloses an intelligent efficient virtual network mapping algorithm based on an attention mechanism, and relates to the technical field of network virtualization, and the algorithm comprises the following steps: extracting feature vectors of physical nodes by using a GCN model, and enhancing node feature representation by aggregating neighbor node features; a Transfomer architecture is adopted to form an encoder system, a GRU model forms a decoder system, and an encoder model comprises an embedded layer, a multi-head attention layer, a connection layer, a feedforward network layer, a connection layer and a linear transformation layer; according to the method, a Transfomer model is used for forming an encoder, more comprehensive feature vectors are generated for all physical nodes through multiple composition structures in the Transfomer model, in the GRU decoding process, in combination with the attention mechanism thought, attention weight is calculated, node mapping is selected, in the link mapping stage, link pruning is adopted firstly, links which do not meet the requirement are removed, and then a GRU decoding process is carried out. And then link mapping is carried out, so that the success rate of link mapping is improved.

The cloud network system and the interaction method of the cloud network system provided by the application belong to the technical field of communication network. The cloud network system comprises a cloud virtual machine, an Internet data center and a controller. The cloud virtual machine comprises a layer 2 gateway, a virtual gateway and a point-of-presence switch. The Internet data center comprises a tunnel switch, a router and a virtual network switch. The controller is used for mapping the virtual network of the Internet data center to a virtual network tunnel, so as to allocate tunnel configurations for each virtual network tunnel in the cloud network system. A layer 2 virtual network tunnel is constructed between the tunnel switch and the layer 2 gateway based on the tunnel configurations. The layer 2 virtual network tunnel comprises an inner layer virtual network tunnel between the tunnel switch and the layer 2 gateway, an outer layer virtual network tunnel between the layer 2 gateway and the virtual gateway, an outer layer virtual network tunnel between the point-of-presence switch and the virtual gateway, and a dedicated line virtual network tunnel between the router and the point-of-presence switch.

The application belongs to the field of virtual network mapping of space-ground integration, discloses a virtual network mapping method based on request pre-segmentation in a space-ground integrated network, designs a hierarchical mapping architecture based on a space-time resource tree, and completes the mapping process of the request based on the same; when the request arrives, if the resource amount of the sub-domain where the request access point is located cannot meet the required resource of the request, an improved body mapping label propagation algorithm is used to extract the high-order characteristics of the request, the low-order characteristics are combined for label propagation, so that the request is pre-segmented, and a suitable sub-domain for the pre-segmentation result is found for mapping. The application realizes the space controllability of the request mapping result, and can also reduce the remapping of the mapping result along the time dimension as much as possible, improve the resource utilization rate and the mapping success rate.

There is provided a network apparatus comprising: means for storing a mapping, the mapping comprising an indication of a first virtual network and at least one other virtual network configured to provide a service at a lower quality than the first virtual network; means for receiving, from another network apparatus, a request to provide a service using the first virtual network; and means for using the mapping and the indication of the first virtual network to select a virtual network to provide the requested service.

This invention discloses a cloud-edge-device virtualized zero-configuration network interconnection method and system for heterogeneous links, relating to the field of cloud-edge-device network interconnection technology. The method includes the following steps: acquiring state parameters and traffic characteristics of heterogeneous links between cloud-edge-device nodes and constructing a first link set; sending probe payloads to the first link set and performing monitoring and identification to obtain an address change set, and performing network topology migration based on the address change set to obtain a virtual network mapping set; identifying the initial scope of the address change set based on the virtual network mapping set to obtain an address disturbance set; performing adjacency expansion on the address disturbance set within a preset network topology connectivity domain to obtain an address update domain set; generating virtual network configuration instructions and distributing the virtual network configuration instructions to the corresponding cloud-edge-device virtual network elements. This solves the problem that in a heterogeneous link environment between cloud-edge-device nodes, the lack of real-time and accurate identification of address changes makes it difficult to automatically restore virtual network connectivity.