51 results about "Traffic grooming" patented technology

A method includes determining a line rate selection for a flexible optical wavelength-division-multiplexing WDM network, determining a traffic routing in said network, and determining simultaneously a channel routing, wavelength assignment and spectrum allocation in said network based on an auxiliary graph.

Methods and systems for optical signal grooming that include providing one or more input signals, each having one or more modulated subcarriers, to a grooming processor; and grooming the input signals at a subcarrier level with the grooming processor to produce one or more output signals by arranging the modulated subcarriers in the output signals according to a grooming operation such that the modulated subcarriers are not demodulated or decoded prior to grooming.

The invention provides a subtree-based multicasting traffic grooming method in a WDM (Wavelength Division Multiplex) optical network, belonging to the technical field of network communication. The method comprises the steps of: initializing, searching an optimal subtree, grooming by using the optimal subtree, adding a subtree, newly building a subtree, allocating resources, and releasing corresponding resources. Under the condition of multiple restrains, the method is used for carrying out service grooming by using the existing optical tree and the optical path in the network, has wider applicable range, low requirement on functions of network nodes in the WDM optical network, and has strong dynamic configuration traffic grooming capability due to no need of the network nodes compared with the virtual topology based traffic grooming method, and a relatively simple structure of the needed node.

A method includes determining a line rate selection for a flexible optical wavelength-division-multiplexing WDM network, determining a traffic routing in said network, and determining simultaneously a channel routing, wavelength assignment and spectrum allocation in said network based on an auxiliary graph.

An Ethernet-based next generation optical transport network apparatus and a traffic grooming method in the apparatus are disclosed to provide a traffic grooming function to simultaneously transmit Ethernet data and a TDM signal through the same wavelength and provide a differentiated protection switching function by the flows to effectively support an Ethernet service in an optical transport network.

The invention discloses a path optimizing selection method and system based on a route reflector, and relates to the field of data communication. The method comprises the following steps: a first route reflector acquires the whole network topology information and receives the whole network complete BGP route information sent by a second route reflector; the first route reflector collects and analyzes the whole network traffic flow direction data and link utilization factor data, and formulates a traffic grooming and optimizing strategy; according to the whole network topology information, the whole network complete BGP route information, the whole network traffic flow direction data and the link utilization factor data, the first route reflector reflects an optimized BGP route to a to-be-optimized path router according to the traffic grooming and optimizing strategy. The multipath load balancing of the traffic can be realized, and the problem of the production of the suboptimum route caused by the lack of the whole network topology visual angle is avoided. Furthermore, the processing burden of the first route reflector can be reduced since the first route reflector only needs to establish IBGP connection with the router referring to path optimization.

The invention discloses a dynamic traffic grooming method in an IP / WDM network. The dynamic traffic grooming method mainly solves the problems of dynamic traffic routing and resource allocation in the IP / WDM network. The method specifically includes the first step of IP / WDM network topological information input and initial resource allocation, the second step of searching for a candidate path for each node pair according to a k-shortest-path algorithm based on a tabu search method, the third step of utilizing the advantage and disadvantage evaluation criteria to select the optimal candidate path for traffic routing, and the fourth step of utilizing an adjacent node extension method to reselect a path when traffic routing fails. According to the method, the k-shortest-path algorithm based on the tabu search method, the candidate path advantage and disadvantage evaluation criteria and the adjacent node extension method are introduced, the network resource utilization rate is improved, and the traffic blocking rate is reduced.

The invention discloses a traffic grooming and distinction importance protection method based on clustering, and belongs to the technical field of communication networks. The method includes the following steps that a network is divided into clusters, and services in the clusters are directly groomed through a layered auxiliary picture; the shortest paths between the clusters are looked for by means of a cluster convergence layer for the services between the clusters and then are mapped onto the layered auxiliary picture for grooming; according to the situation of multiple priority services in an independent wavelength after grooming, importance of wavelength links is distinguished; by means of an intelligent telescopic P ring, grading protection is effectively carried out. By means of the method, dynamic services are quickly and efficiently groomed, and the utilization rate of network resources is greatly improved; meanwhile, different service quality guarantees are achieved through distinction of the importance of the link wavelengths, the situation that resources are seriously wasted due to the fact that the services are protected one by one in a traditional method is avoided by means of P-Cycle comprehensive protection, arriving and leaving of the services can be perceived, the P ring is dynamically extended and retracted, current network intelligent requirements are met, protection resource cost is greatly reduced, and the network capacity of bearing the services is improved.

The invention provides a software defined network for the power data communication and a traffic grooming method thereof, which belongs to the technical field of communication session technology. The network comprises a client terminal, a centralized controller and a plurality of switches compatible with the OpenFlow protocol. The application of the software defined network realizes the global network view of the power data communication, and the service quality is ensured to be high. The message interaction is conducted between the centralized controller and the switches compatible with the OpenFlow protocol. Based on the dynamic flow statistical information provided by the switches, the centralized controller dynamically adjusts the idle_timeout value. When the number of s data packets in the mated flow entry exceeds a given threshold, the value of the idle_timeout value in the flow entry is increased to be larger than the interval time of the data packets. Therefore, the data packets can be matched with the flow entry without the need of reconstructing the flow entry. The processing delay of communication data packets is shortened. Meanwhile, the power data communication efficiency of large data communication amount is increased.

The invention discloses a method and system for realizing traffic grooming, which can be used for determining a link with least business number as a link to be optimized and reestablishing business to be optimized on the link to be optimized on a link with least residual bandwidth. The method and system disclosed by the invention achieves the purposes of causing less influence of a traffic grooming technology on the existing network, reducing the influenced business number during business optimization, reducing the network risk and not influencing the traditional of the network business as possible. In addition, because the link which occupies smaller bandwidth can be released and the business is reestablished on the link which occupies larger bandwidth, the bandwidth utilization rate of the link is improved, and therefore energy sources are saved.

The invention provides a deep reinforcement learning traffic grooming method in a cloud-fog elastic optical network. The method comprises the steps: calculating a shortest path of a service request through a shortest path algorithm; converting a service path and the network topology sliced according to the wavelength into a picture form; extracting features of all the pictures through a convolutional neural network, carrying out the classification through a softmax classifier, and distributing the service requests to corresponding wavelengths; if the allocated wavelengths have available resources, successfully allocating the service requests, otherwise, traversing all the wavelengths according to a first adaptation method to allocate the service requests; evaluating by using a reinforcement learning algorithm, updating the network state of the topology, and generating a shortest path topological graph of the next service request; and updating the convolutional neural network after theallocation of the at least three service requests is completed each time. According to the method, the network is continuously updated through reinforcement learning, so all services can fully utilizeports, transceivers and amplifiers in the network, and the total energy consumption of the network is reduced.

Methods and systems for optical signal grooming that include providing one or more input signals, each having one or more modulated subcarriers, to a grooming processor; and grooming the input signals at a subcarrier level with the grooming processor to produce one or more output signals by arranging the modulated subcarriers in the output signals according to a grooming operation such that the modulated subcarriers are not demodulated or decoded prior to grooming.

The invention provides a virtual network embedded system and method for cloud rendering in an optical data center network. The virtual network embedded system for cloud rendering in the optical data center network includes an optical backbone network, a rendering data center, an image storage data center and an image packed data center. The virtual network embedded method for cloud rendering in the optical data center network comprises the following steps: sending a virtual network embedded request to the optical data center network by a cloud rendering user; describing the virtual network embedded request in a modeling manner; sorting all cloud rendering tasks; performing virtual network embedding to current clouding rendering tasks; updating bottom layer optical data center network resource; counting consumed wave length amount and server amount; obtaining lower bound value ranges of consumed wave length amount and server amount of all cloud rendering tasks and verifying whether a current virtual network embedded operation is the optimal or not. Methods of server integration and traffic grooming are combined for node mapping and link mapping of the virtual network embedded request for real cloud rendering tasks and unreal cloud rendering tasks and the purpose of reducing rendering cost effectively is achieved.

The invention provides a multi-domain optical network traffic grooming method based on matching game, which comprises the following steps of: for a known multicast traffic request, performing a matching game by taking a source node and a destination node as game players to form optimal matching meeting preferences, and combining a game result with an optimized heuristic method, routing the trafficrequests on the constructed virtual topology, and finally obtaining a topological structure which meets all the traffic requests and enables the number of transceivers in the multi-domain optical network to be minimum. Under the condition of a multi-domain optical network, for the problem of processing a dynamic multicast flow request, especially under the conditions that the optical network structure is relatively complex, the multicast flow request is relatively large and the network cost needs to be reduced as much as possible, the smoothness of multi-domain optical network services can beeffectively guaranteed, and the resource utilization rate is improved.

The invention discloses a method for quickly grabbing electric power communication network service in the field of communication technology, which comprises the following steps: 1) establishing a service bearing model; 2) assessing the damage to the serivce; 3) generating a service dredging scheme; 4) executing the traffic grooming scheme. The invention can quickly analyze and evaluate the real damage situation of the service after the failure of the electric power communication network and formulate a reasonable corresponding service connection scheme, and finally connection is realized in time, so as to avoid causing great negative impact on the safe and stable operation of the primary system of the electric power network.

The invention provides a method for grooming multilayer multi-granularity traffic in waveband switching optical network, belonging to the technical field of communication network. The method comprises the following steps: constructing a waveband switching optical network supporting multilayer multi-granularity traffic grooming; deploying MG-OXC+DXC for all optical nodes in the network; using an ML-MG-IAG method for grooming the IP layer low-speed traffic of the local upper route into light paths; grooming the traffic into the light path directly if the excess bandwidth of the light path is not zero; grooming the traffic in a cascade light path if no transceiver can be used at the two end points of the light path, otherwise, blocking the light path. The invention relates to the IP layer, awavelength plane layer, a wave band plane layer and the like and uses wavelength conversion technology in a wave band, thus saving the number of all-optical cross transmission ports and lowering traffic blocking rate.

The invention discloses a method and system for dynamically adjusting P2P (Peer-to-peer) nodes to reduce P2P traffic outside a domain. The method comprises the steps of: establishing a link for requesting downloading by a node inside the domain and a Peer corresponding to a file block having a P2P file after a user submits a request for downloading the P2P file; deleting a corresponding file block in a file block queue by the node inside the domain according to the file block currently obtained by the node inside the domain after a period of file block downloading time; and obtaining file blocks which are obtained by other nodes by the node inside the domain to complete the downloading of the P2P file. According to the method and system disclosed by the invention, the corresponding file block in the node inside the domain and a request queue link is correspondingly deleted by utilizing network topology information provided by an operator and by firstly choosing file block resources downloaded by the node inside the domain, so as to realize effective traffic grooming and control of the P2P traffic outside the domain, the bandwidth resource is effectively saved, and the bandwidth utilization rate is improved.

One or more embodiments of the present specification provide a forward transmission network resource allocation method, the method comprising the steps of: acquiring current traffic data in a forward transmission network, and inputting the current traffic data into a trained traffic type prediction model to obtain a traffic type of predicted traffic data corresponding to the current traffic data; determining a request queue priority (RQP) value corresponding to the predicted traffic data according to the traffic type of the predicted traffic data; and determining a resource allocation mode corresponding to the predicted traffic data according to the traffic type and the RQP value corresponding to the predicted traffic data. Visibly, the accuracy of the flow prediction type can be improved through flow carding, resource allocation is carried out according to the flow type, the resource utilization rate of the forward transmission network can be effectively improved, and the network congestion rate is reduced, so that targeted resource allocation can be carried out according to different flow types, the resource utilization rate of the forward transmission network is further improved, and the transmission latency is reduced.

A method and apparatus for grooming traffic demands according to mileage based tariffs. An Integer Linear Program (ILP) that captures the traffic grooming problem is defined, and such a linear program can in principle be solved by conventional linear program application systems which are fully familiar to those of ordinary skill in the art. However, the time required to solve such an ILP is fairly large, even for the moderately sized networks we are interested in. That is, there are many possible routes to consider, and hence many integer variables in the ILP. Therefore, further in accordance with the principles of the present invention, the ILP is advantageously run on the Delaunay Triangulation of the network rather than on the completely connected network graph.

The invention discloses an IP over wavelength division multiplexing (WDM) network energy saving method for a router card under protection of SBPP. The method comprises the steps of performing traffic grooming on an IP over WDM network of the router card under the protection of SBPP, thus acquiring work light channels and protection light channels; and distributing each work light channel and each protection light channel to the router card, wherein a traffic grooming algorithm comprises respectively building idle virtual topologies Gw and Gp for a work virtual link and a protection virtual link in an IP layer, and then acquiring a business request DR from a request list; building a work path in the Gw; and building a protection path in the Gp until the protection channel meets all protection business requirements. The steps of distributing each work light channel and each protection light channel to the router card comprises distributing each working light channel and each protection light channel to the router card in a mixed mode and a dedicated mode. According to the method provided by the invention, sharing of united standby resources of an optical layer and the IP layer is achieved, and maximization of energy saving is achieved.

An embodiment of the present invention relates to the field of Internet technologies and discloses a traffic grooming method and a server. In the embodiment of the present invention, the traffic grooming method includes a step of receiving a transmission control protocol (TCP) connection data packet sent by a device in a local area network to an external network, a step of determining whether theTCP connection data packet is an uplink traffic or not, a step of forwarding the TCP connection packet based on a preset routing policy if not. The embodiment of the invention also provides the server. With the embodiment of the present invention, a user outside the network can normally browse a webpage of a self-built website in the network or access the application service of equipment in the network.

The invention discloses a service data transmission method and system, belonging to the technical field of data transmission. The method comprises the steps that a traffic grooming device receives a service request and determines a target access address of the service request; the traffic grooming device determines a target transmission route corresponding to the target access address according tocorrespondence between a an access address prestored locally and a transmission route, wherein the higher the visit heat of the access address in the correspondence, the higher the quality of serviceof the corresponding transmission route; and the traffic grooming device transmits service data based on the target transmission route. Through adoption of the method and system, the total quality ofservice of the network system is improved.

The invention provides an ROADM (Reconfigurable Optical Add / Drop Multiplex) switching node device and method having a traffic grooming function. The device comprises a wavelength switching colorless directionless ROADM unit and a sub-wavelength traffic grooming unit. The method comprises the following steps: (1) broadcasting wavelength traffic to all wavelength selection switches by an optical divider; (2) selecting a wavelength channel carrying the traffic by the wavelength selection switches; and (3) if the wavelength traffic is direct forwarding traffic, transmitting the wavelength traffic to a corresponding output port through a specified wavelength selection switch, and allowing other wavelength selection switches to discard the wavelength traffic; and if the wavelength traffic is traffic requiring traffic grooming, transmitting the wavelength traffic to a traffic grooming sub-module through the specified wavelength selection switch for performing wavelength traffic grooming, and allowing other wavelength selection switches to discard the wavelength traffic. Through adoption of the ROADM switching node device and method, electric domain traffic grooming and optical domain wavelength switching functions are integrated, and wavelength-level traffic grooming and flexible scheduling are realized on an electric layer for the uplink and downlink of user side traffic and forwarding traffic.

The embodiment of the invention relates to the technical field of wireless communication, and discloses a service-oriented traffic grooming method and device, computing equipment and a storage medium.The method comprises the following steps: enabling a controller to receive traffic data which is transmitted by a convergence router and is subjected to traffic strategy configuration through the core router; carrying out application feature analysis on the flow data and setting a service group; and sending back the traffic data of the service packet to the core router and then dredging the traffic data through an exit corresponding to the service packet. By means of the mode, distinguishing of different service levels and different service requirements and shunting optimization of specific applications can be achieved, different exit routing of different internet applications by various important special lines can be flexibly achieved by configuring multiple strategy groups, efficiency is high, and accuracy is high.

The invention discloses a dynamic service grooming method in an IP / WDM network, which mainly solves the problem of routing and resource allocation of the dynamic service in the IP / WDM network. The specific steps include: inputting IP / WDM network topology information and initial resource configuration; using k shortest paths algorithm based on tabu search method to search for candidate paths for each node pair; When the service routing fails, the neighbor node expansion method is used to re-route the service. The invention improves the utilization rate of network resources and reduces the service blocking rate by introducing the k shortest path method based on the tabu algorithm, the evaluation criterion of candidate paths, and the adjacent node expansion method.

The present invention provides a virtual network embedding system and method for cloud rendering in an optical data center network. The system includes: an optical backbone network, a rendering data center, an image storage data center, and an image compression data center; and the method includes: a cloud rendering user transmits data to the optical network. The data center network issues a virtual network embedding request; models the virtual network embedding request; sorts all cloud rendering tasks; performs virtual network embedding of the current cloud rendering task; updates the underlying optical data center network resources; and counts the total number of wavelengths consumed. and the total number of servers; obtain the lower bound value interval of the total number of wavelengths consumed by all cloud rendering tasks and the lower bound value interval of the total number of servers; verify whether the current virtual network embedding operation is optimal. The present invention combines server integration and traffic grooming methods to perform node mapping and link mapping for virtual network embedding requests of real cloud rendering tasks and non-real cloud rendering tasks, thereby achieving the purpose of effectively reducing rendering overhead.

The embodiment of the present invention relates to the technical field of the Internet, and discloses a flow grooming method and a server. In the embodiment of the present invention, the flow grooming method includes: receiving a transmission control protocol TCP connection data packet sent by a device in the local area network to the external network; judging whether the TCP connection data packet is uplink traffic; if the judging result is no, then based on the preset The routing policy forwards TCP connection packets. The embodiment of the present invention also provides a server. By adopting the embodiment of the present invention, users outside the network can normally browse the web pages of the self-built website in the network or access the application services of the equipment in the network.