685 results about "Route" patented technology

There is provided a user equipment apparatus registered with a first wireless communication network, the first wireless communication network identified by a first network identity. The user equipment apparatus comprises a receiver and a processor. The receiver is arranged to receive a route selection policy rule, the route selection policy rule including: an application descriptor, and a route selection descriptor, the route selection descriptor comprising a network identity. The processor is arranged to detect application traffic that matches the application descriptor and determine the network identity of the route selection descriptor matches an identity of the first wireless communication network. The processor is further arranged to apply the route selection descriptor to the detected application traffic upon determining the network identity of the route selection descriptor matches the identity of the first wireless communication network.

The invention provides a dynamic routing optimization method and system based on an ad hoc network. The method comprises the following steps: constructing a state space of the ad hoc network in routing switching through performance characteristics of each routing node in the ad hoc network and interaction density characteristics in neighbor node information; the method comprises the following steps: acquiring response time delay information of a route switching request in a route switching process in an ad hoc network, determining path stability of each route node in the ad hoc network in the route switching process through the response time delay information, and further determining a route working condition index of the ad hoc network in a current network according to all the path stability; when the routing working condition index is lower than a preset working condition threshold value, real-time updating of a routing table in the ad hoc network is triggered, and then incremental updating is carried out on the routing table in the ad hoc network based on the reward function in the state space. Based on the above scheme, topology dynamic sensing and intelligent routing optimization in the ad hoc network can be realized, so that the routing switching stability in the ad hoc network can be improved.

There is provided a network node in a first wireless communication network. The network node comprises a receiver, a processor and a transmitter. The receiver is arranged to receive, from an application function in a second wireless communication network, application guidance on route selection policy rule determination. The processor is arranged to construct a route selection policy rule using the application guidance, the route selection policy rule including: an application descriptor, and a route selection descriptor comprising a network identity, wherein the network identity identifies the second wireless communication network, and the route selection policy rule defines a route for application traffic when a user equipment apparatus is registered in the second wireless communication network. The transmitter is arranged to transmit the route selection policy rule to the user equipment apparatus.

The invention provides a distributed data transmission optimization method, device and equipment, and belongs to the technical field of wireless communication, and the method comprises the steps: carrying out the strategy optimization of each node of a Mesh network based on a near-end strategy optimization algorithm, and obtaining an optimization strategy result, the optimization strategy result comprises a route selection optimization strategy and a node dormancy and wake-up optimization strategy of the Mesh network; performing fragmentation and routing planning on the to-be-transmitted data according to an optimization strategy result to obtain fragmentation information and a routing path; performing data transmission on the to-be-transmitted data according to the fragment information and the routing path; and in the data transmission process, optimizing the routing path based on a preset routing optimization strategy until the data transmission is finished. According to the method, intelligent decisions of routing selection, node dormancy and wakeup can be realized, the fragment size and the transmission path are dynamically adjusted, uniform distribution and efficient scheduling of data fragments in the network are ensured, single-point overload is avoided, and the data storage and transmission efficiency of the whole network is improved.

Systems and methods are provided for rapid user equipment route selection policy rule processing. A method includes determining an applicable routing policy based on user equipment route selection policy (URSP) rules for an established protocol data unit (PDU) session and storing PDU session information with the established uplink PDU session in a cache. The method further includes examining subsequent uplink packets for PDU session information and checking the cache for an established PDU session with matching uplink PDU session information. The method additionally includes routing the subsequent uplink packets to the established PDU session having the matching PDU session information, causing the subsequent uplink packet to be processed in accordance with the applicable routing policy as previously determined based on the URSP rules.

The present disclosure relates to a 5G or 6G communication system for supporting higher data transmission rates, and pertains to an operation method of a user equipment (UE). The operation method comprises the steps of transmitting a registration request message including a traffic category support indication to an access and mobility management function (AMF) via an access node, receiving, from the AMF via the access node, a UE configuration update message including UE route selection policy (URSP) rules determined on the basis of the traffic category support indication and first traffic category mapping information, and determining a protocol data unit (PDU) session for application traffic on the basis of the URSP rules and pre-stored second traffic category mapping information.

The invention provides a hierarchical deep reinforcement learning routing protocol method based on a multi-link ad hoc network, relates to the technical field of communication routing, and solves the problem that the calculation efficiency in the current multi-link ad hoc network is degraded. The method comprises the following steps: firstly, constructing and dynamically updating a global network view for all nodes in a network, and further constructing a route selection model which is divided into a high-level controller and a low-level controller; a high-level controller plans a route from a global perspective and balances a global load, and a low-level controller selects a target node according to a planning result of the high-level controller and distributes an optimal communication link for the target node in combination with link state information; training and optimization of the network of each controller are carried out independently, external rewards are introduced to a high-level controller, and internal rewards are introduced to a low-level controller; the external reward is used for optimizing the overall performance of the high-level controller; the internal reward is used as an index value of the low-level controller for feeding back the link state in real time, and collaborative optimization of the high-level controller and the low-level controller is achieved.

A request is received from a first function, identifying a list of allowed traffic to a user plane connection, the request indicating to identify a device that routes traffic via the user plane connection that is not included in the list of allowed traffic. A request to a second function to be notified when the device establishes a user plane connection to network resources defined in a route selection policy rule. A third function is determined with which the device has established a user plane connection. A request is sent to the third function to report, for the device, traffic sent via the user plane connection that is not included in the list of allowed traffic. A report is received from the third function indicating, for the device, the traffic sent via the user plane connection that is not included in the list of allowed traffic.

The invention discloses a time-varying routing method and system for a satellite internet, and mainly solves the problems that an existing satellite network routing method is difficult to support satellite high-quality communication, the topology is frequently changed, and the information communication load between satellites is heavy. According to the scheme, the method comprises the following steps: initializing orbit parameters of satellite nodes and an inter-satellite link set; obtaining a link on-off timetable through simulation, and sending the link on-off timetable to a satellite node by a ground station; the satellite node generates a topology prediction message according to the link on-off time table, determines the sending time of the message according to the difference value between the link change moment and the sending time of the routing control message, and floods the message in the limited area; and after receiving the message, the satellite node analyzes the link information to calculate a virtual route, arranges a route updating sequence of the satellite node, replaces the route table with the virtual route table at the link change moment, and issues the route to the basic network layer. According to the method, the transmission load of the network can be effectively reduced, the probability of outdated routing and packet loss is reduced, the method can be used for establishing the satellite internet, and the communication quality between satellites is guaranteed.

Various embodiments discussed herein relate to route optimization and query understanding for route and / or direction queries with complex user preferences. Each route candidate, for example, is treated as a richly annotated document. The routing engine, in addition to performing route optimization, acts as a retriever and ranker of route documents according to user intent. Various embodiments rank routes not just based on a simple cost model, but based on many more or alternative factors according to user preferences, user intent, and / or contextual data.

A system and associated methods provide solutions for end-to-end privacy and per-hop routing and policy decision in multi-hop and Software-Defined Wide Area Networks (SD-WANs) by leveraging unique SDWAN edge identities of edge devices. The system enables end-to-end encryption between traffic source and destination sites using IPsec ESP tunnel mode, with System IPs as the outer IP addresses. The system further enables per-hop integrity protection using IPsec AH transport mode, with WAN IPs as the outer IP addresses. By having some information encrypted between a source device and a destination device and other information encapsulated between hops (e.g., between source device and an intermediate device), the system enables route and policy lookup based on destination site System-IP, along with integrity protection based on SLA-class in packet metadata for independent path selection at intermediate hops.

In response to a programmatic request, configuration information representing a multi-network-segment gateway established on behalf of a customer is stored at a networking service. In response to another programmatic request, a communication session is established between a route signaling node of the gateway and a routing information source located at a customer premise. In response to additional programmatic input, the networking service stores an indication that the gateway is to be used to transfer packets between a cloud-side virtual network and a customer-side virtual network. The routing information exchanged in the session pertains to the cloud-side and customer-side virtual network, and is used to transfer data packets between the two virtual networks.

The invention relates to a dynamic routing and flow balancing method and system for a regionalized network topology, and the method comprises the steps: dividing a satellite network into a plurality of partitions, and distributing a core node for traffic scheduling and routing calculation for each partition; each core satellite node responds to each traffic demand, and bandwidth and traffic distribution in each partition are adjusted through a multi-anchor-segment routing method and a preset linear programming model; and each satellite node dynamically adjusts the route of each traffic demand through a probability forwarding scheduling method based on geometric topology according to the relative position of the satellite node and the target node. According to the method, low delay, high bandwidth utilization rate, load balance and efficient fault recovery of the satellite network are realized through network partitioning, a multi-anchor-segment routing method and probability forwarding based on geometric topology.

The invention relates to multi-path routing of a switch fabric. The switching fabric uses traffic congestion information to notify it of timely use of non-minimum routing. An ingress port of a network switch collects traffic congestion information from an egress port of the network switch. The traffic congestion information includes minimum and non-minimum routing congestion metrics for the egress port. A candidate egress port is identified for forwarding the data packet to the destination node. And selecting one of the candidate exit ports according to the traffic congestion information. The selection process is biased to select some candidate egress ports rather than other ports. In particular, a candidate egress port providing non-minimum routing to a destination node and having a high minimum routing congestion metric is not sponsored by a selection process.

The invention relates to a dynamic routing method for an underwater acoustic communication network, and the method comprises the steps: each node obtains the three-dimensional coordinates of the node in real time through a positioning module, and periodically broadcasts an enhanced neighbor discovery control packet comprising the node position, the node residual energy and the available bandwidth; the physical layer of each node determines a signal-to-noise ratio, a propagation delay and a packet loss rate according to the received enhanced neighbor discovery control packet, and updates a link state table through a shared memory; the network layer of each node reads the link state, position information and node residual energy of a neighbor node from the link state table of the shared memory, and constructs a neighbor table; when the source node sends underwater acoustic communication data to the destination node based on the neighbor table and there is no available route, route discovery is triggered to obtain a target route path; and sending the underwater acoustic communication data based on the target routing path.

The invention relates to the technical field of internet routing security, in particular to a routing leakage detection method, device, equipment, medium and program, and the method comprises the steps: obtaining routing table data, business relation data of an autonomous system and routing declaration data; constructing a triple set of the autonomous system according to the routing table data, and calculating the legal probability of the corresponding triple according to the observation data of each triple in the triple set; and extracting an autonomous system path in the route declaration data, detecting whether the autonomous system path is a valley path according to the business relation data, and generating a route leakage detection result according to a valley ternary combination method probability in the valley path. Therefore, the problem that a valley path-based routing leakage detection method in the related technology is difficult to meet the requirements of a complex internet environment due to high false alarm rate and static rule limitation is solved.

The present disclosure relates to a routing control method, a system, and a BGP Peer. The method of the present disclosure can be executed by a first BGP Peer, including: receiving information of adding a new VPN route sent from a second BGP Peer, wherein the information of adding the new VPN route comprises: the new VPN route and an identifier of a first VPN instance; determining whether a number of VPN routes corresponding to the identifier of the first VPN instance reaches or exceeds a limit value after adding the new VPN route; and sending first instruction information to the second BGP Peer to instruct the second BGP Peer, in a case that the number of VPN routes corresponding to the identifier of the first VPN instance reaches or exceeds the limit value, wherein the first BGP Peer is an iBGP Peer inside a first AS.

The invention relates to the technical field of network communication, in particular to a route issuing method and device and related equipment. The method is applied to network equipment, and comprises the following steps: generating original next hop information based on a standard routing protocol; on the basis of a predefined rule, the generated original next-hop information is divided into at least one equivalent next-hop group, and one equivalent next-hop group comprises at least two next-hop interfaces; and for each equivalent next hop group, generating a corresponding routing table item, and issuing the generated routing table item to a hardware forwarding table.

A router is configured to send an advertisement of selective Ethernet Virtual Private Network (VPN) (EVPN) routes based on the Route Types. The router is configured to determine a requirement for a route refresh from a Border Gateway Protocol (BGP) peer for a subset of Route Types of all of the Route Types, send a route refresh message to the BGP peer with an indication of the subset of Route Types, and receive updated routes from the BGP peer only for the subset of Route Types. The indication can be included in a reserved field and payload of the route refresh message. The route refresh message can be defined in RFC 2918.

A technique is described herein for reliably comparing a first route produced by a first routing system with a second route produced by a second routing system. In some implementations, the technique includes: generating an envelope that encloses second-route data associated with the second route; identifying a segment of the first route having first-route data points that lie outside the envelope; classifying a cause of a deviation associated with the segment based on segment data that describes the segment; and performing an action based on classification of the deviation. The technique is fast, resource efficient, accurate, and resilient to the fact that the first and second routing systems potentially use different rules and / or map data to produce their routes. The results of the technique can be leveraged to improve the performance of the first routing system.

The present technology intelligently selects routes to be distributed to edge network device from SD-WAN controllers. Rather than indiscriminately distributing routes, the present technology utilizes logic to account for route viability conditions to determine whether a route between a first edge network device and a second edge network device is likely to be usable between the edge network devices.

The invention relates to the technical field of communication, and discloses a route synchronization method, device, system and equipment among multiple SDN clusters and a medium, and the method comprises the steps: obtaining neighbor configuration information issued by a central controller based on a target BGP service; establishing a neighbor relationship between the target BGP service and other BGP services according to the neighbor configuration information; obtaining first node address information of a target SDN cluster collected by the target SDN controller based on the target BGP service, and generating first routing information; and sending the first routing information to other BGP services which establish the neighbor relationship. According to the invention, the BGP service and the SDN controller are utilized to realize the coordination of the control planes, the BGP service and the SDN controller form a double-layer control plane, and the double-layer control plane is utilized to issue the routing forwarding strategy, so that flooding on the data plane is effectively avoided, and the routing synchronization efficiency is improved.

The invention provides an SDH (Synchronous Digital Hierarchy) end-to-end route restoration method and device, computer equipment and a medium. The method comprises the following steps: acquiring first discrete route information; performing port protection group complement on a source end port and a sink end port in the first discrete routing information to obtain a plurality of port protection groups; performing connection relationship updating on the first discrete routing information based on the plurality of port protection groups to obtain second discrete routing information; determining third discrete routing information based on the second discrete routing information; and performing route search on a source end port and a sink end port in the third discrete route information to obtain target route information so as to perform route restoration on a transmission route of the service data from the starting node to the ending node. Therefore, the port protection groups are complemented in advance, the number of the port protection groups is reduced, the routing search is carried out after the cascade cross relation is removed, the routing search path can be optimized, and the routing search efficiency is effectively improved.

A method performed by an ingress router of an edge cloud data center to optimize mass switching triggered by site failures or degradation at the data center. The method includes receiving a Border Gateway Protocol (BGP) UPDATE message that includes a site-reference identifier (ID) and operating capacity information, where the site-reference ID corresponds to a group of routes within a site of the cloud data center; attaching the site-reference ID to the group of routes in a routing table; selecting a path for forwarding traffic corresponding to the group of routes based on the operating capacity information; and forwarding traffic for selected services along the path.

The invention discloses a route determination method, system and device and a storage medium. The method comprises the steps of obtaining route notification data and a candidate route set; constructing a knowledge graph based on the route notification data, and calculating a reputation value of each autonomous domain node based on the knowledge graph; and based on the reputation value of each autonomous domain node, screening out a credible route set from the candidate route set, performing reputation weighted scoring on paths in the credible route set, and selecting the path with the highest score as the optimal route. Semantic organization is carried out on the autonomous domain, the routing prefix and the strategy relation through the knowledge graph, the data availability and analysis efficiency are improved, dynamic evaluation of the autonomous domain reputation is achieved in combination with neighbor recommendation, and the accuracy of credibility judgment is improved; a reputation evaluation result is directly applied to path selection, untrusted nodes and paths are effectively filtered, potential attack risks are reduced, and the overall security and stability of a routing system are improved.

The present invention provides network access to network nodes (e.g., Zigbee nodes) without route discovery by combined reading of neighbor tables and source routing. By repeatedly reading neighbor tables of all nodes in the network, powered nodes can be found. Neighbor tables of neighbors listed in the neighbor table of the first node are read by providing a source route which may be obtained by tracking from which node the neighbor table was read. Route selection may be controlled based on a route quality (e.g., path cost). The result of this process is a list of source routes to all nodes. It is then possible to communicate with all nodes in the network using source routing (e.g., to read the light state).

The invention provides an unmanned aerial vehicle network routing method based on candidate route pre-calculation and dynamic preferential selection, which comprises the following steps that: a network layer executes topology perception and route pre-calculation to generate a candidate route set; the link layer implements a real-time signal-to-noise ratio monitoring mechanism to generate link quality evaluation parameters; based on a dynamic preferential decision model, selecting an optimal next hop node from the candidate routing set; and the data stream is forwarded to the selected optimal next hop node through cross-layer collaboration. According to the method, a cross-layer cooperation mechanism is added in a table-driven routing protocol, a traditional routing decision is divided into network layer pre-calculation and link layer dynamic optimization selection, a candidate routing set is constructed in a network layer, and the link layer selects an optimal next hop by sensing channel quality parameters, so that dynamic optimization and interference avoidance of a routing path are realized; and the packet delivery rate and throughput performance of the unmanned aerial vehicle network are effectively improved.

An optimal route can be determined for delivering an item through a logistics system where vehicles have multiple stops when traveling along routes. The optimal route is determined using a hybrid system employing a classical computing device and a quantum annealer. The classical device reduces the search space that allows the quantum annealer to determine a more optimal solution. In an aspect, a routing graph comprising nodes and edges is populated from routes of vehicles, where the nodes identify locations and the edges represent routing data. At least a portion of the nodes and edges is removed to form a refined routing graph. For an origin-destination input, the refined routing graph can be filtered according to a first set of routing constraints to form a reduced route search space. A quantum annealer is invoked according to an objective and a different second set of routing constraints.

The invention relates to the technical field of intelligent calculation centers, in particular to a traffic forwarding method and device, electronic equipment and a storage medium. The method is applied to Spine equipment in a Spine-Leaf network, each ingress port, connected to first Leaf equipment, of the Spine equipment forms a port group, and a mapping relation between each ingress port and each equivalent route included in each equivalent route group is constructed on the Spine equipment; the method comprises the following steps: receiving a message sent by first Leaf equipment; determining a target ingress port for receiving the message, and determining a target equivalent routing group which can be used for routing and forwarding the message based on the destination address of the message; determining a target equivalent route corresponding to the target ingress port from the target equivalent route group according to the target ingress port and the mapping relationship between each ingress port and each equivalent route included in the target equivalent route group; and forwarding the message based on the target equivalent route.

The invention provides a large-scale constellation network semi-physical simulation test system and method, the system comprises a constellation simulator, a satellite-borne router, ground detection equipment and a protocol conversion network bridge, a Mininet simulation platform is deployed, and dynamic topology adjustment, an OSPF dynamic routing protocol and a multi-scene test function are supported; a user can observe network topology change, route updating time and key performance indexes in real time. A semi-physical simulation architecture is realized through unified IP subnet interconnection and the same routing protocol, a space-time synchronization engine ensures that virtual and real node routing tables take effect at an appointed moment, and in combination with a protocol consistency sandbox, hidden faults caused by inconsistent behaviors of hardware and software protocol stacks are solved, and the service life of the virtual and real node routing tables is prolonged. A plurality of real nodes are accessed in a large-scale network environment, and end-to-end data transmission test, security policy verification and protocol compatibility analysis are carried out; the invention provides an efficient, flexible and reliable solution for the design, verification and optimization of the satellite network, and has a wide application prospect.