132 results about "Multi path routing" patented technology

A system for delivering streamed content over a large digital network such as the Internet. Distributed functionality executes on nodes in the network to achieve functions such as assigning partner nodes for transfer of content to or from a target node, scheduling transfer operations among nodes, adding or removing nodes from the network, maintaining security, and other operations. Different embodiments may use one or more of the functional features. In a preferred embodiment, video content is segmented and streamed through multi-path routing. An overlay network uses nodes in partnership groups so that a target node can obtain segments from multiple sources. Partner nodes can provide the segments within a given time window, including simultaneous delivery from multiple partner nodes, so that a more reliable data stream is supported.

The invention discloses a quality of service-based (QoS) Ad Hoc network adaptive node speed on-demand multi-path distance vector routing (AOMDV) algorithm. Four constraint conditions including bandwidth, time delay, hop count and priority are added into a QoS constraint-based routing algorithm; judgment is made and multi-path routing is selected by using an on-demand filtering method; thus the selected route has certain QoS guarantee; and the route is adaptively adjusted according to the change of network topology on the basis of adaptively using the movement speed of a node as a periodic standby route updating rule, so that the problem of failed route maintenance in the conventional signal strength-based route updating mode of an Ad Hoc network is solved. The novel QoS-based Ad Hoc network adaptive node speed multi-path routing algorithm of the invention can be simply and flexibly implemented, and can effectively improve the QoS level of a selected path and the success rate of the selection of the high-priority service routing and improve the validity of the route maintenance and the utilization rate of the network resource.

The invention discloses an SDN-based high-volume data stream load balancing system and method, which mainly solve the problems of uneven loads and link congestion in a network core layer of the conventional data center. The system comprises a Fat-Tree underlying network and an SDN controller, wherein a topological information module, a high-volume data stream routing table module, and a high-volume data stream routing computation module are additionally arranged in the SDN controller; the high-volume data stream routing computation module computes paths for high-volume data streams according to information maintained by the topological information module and the high-volume data stream routing table module; a source aggregation layer switch adopts a packet-level multi-path routing strategy, and the scheduling processing of disordered packets is completed at a destination aggregation layer switch. The SDN-based high-volume data stream load balancing system and method provided by the invention have the advantages that a Fat-Tree network core layer adopts the multi-path routing strategy for the high-volume data streams, so as to solve the problems of uneven loads and link congestion in the network core layer of the data center; a scheduling mechanism for high-volume data stream data packets is introduced to overcome the problem of packet disordering. The SDN-based high-volume data stream load balancing system and method can be used for data forwarding.

The invention discloses a wireless network multi-path routing network transmission method aiming to solve the problem that the existing network coding transmission methods need many time slots, and have too many data transmission times and too high demand for nodes. The main steps of the method are network initialization and data transmission; the network initialization is mainly to determine the level of each node and the neighbor node information and complete networking; the data transmission is that a node judges the zone bits of message packets to perform different treatments to different kinds of message packets, judges the zone bits of the levels of message packets to selectively receive the desired information, judges the local information pool and neighbor information list to select the optimal network coding and performs primary data transmission to complete information transmission and the information transmission of the node. The invention has the advantage of less time slots and data transmission times and lower demand of nodes for network and can be used for multi-user wireless data transmission.

The invention belongs to the technical field of satellite network communications and discloses a hierarchical multi-path routing method for a satellite network. A static topology is adopted in a routing mechanism to divide an operation cycle, and the real-time update of the network routing is realized in each time slice; a dual-path routing algorithm is adopted in LEO layer satellites, the satellite nodes in a GEO layer are maintained to the minimum hop count routing of other nodes, a congestion control mechanism and a data distribution method are adopted; and data packets transmitted in a network are transmitted through the LEO layer, and when the network is congested, the data packets with higher delay requirements are transmitted through the GEO layer satellite nodes. The hierarchical multi-path routing algorithm of the invention can achieve higher data delivery rate and reduce the average delay of data transmission when the network is congested; and slightly reduces the data packet delivery rate but increases the transmission delay when a fault occurs to the nodes.

The invention discloses a constant degree interconnection structure, which provides interconnection structures with nondestructive and continuous extensible capability, simple and feasible unicast single-path routing methods, and parallel efficient unicast multi-path routing methods for a great amount of common servers and low-end switches, which are respectively provided with two network adapter ports. The interconnection of all servers and switches is completed according to the scale of the data center, the port number of the switches, the layer number of the data center and other requirements, so as to form the nondestructive continuous extensible interconnection structure; the address of a target server is identified according to the data transmission requirement, and a complete path is generated by adopting the unicast single-path routing method, so as to transmit data to the target server; and the address of the target server is identified according to the data transmission requirement, and a plurality of parallel paths are generated by adopting the unicast multi-path routing method, so as to parallelly transmit data to the target server along the multiple paths.

Techniques for providing routing information of a first router device supporting multi-path routing from a second router device to a destination node. In an embodiment, multiple egress ports of the first router device are coupled to a second router device, where port groups of the second router device correspond to multiple network paths to the destination node. A routing engine of the first router device may forward packets to the destination node based on a set of entries in a routing table. In another embodiment, the set of entries defines for each of the multiple egress ports of the first router device a correspondence to only a respective one of the port groups of the second router device.

A system for delivering streamed content over a large digital network such as the Internet. Distributed functionality executes on nodes in the network to achieve functions such as assigning partner nodes for transfer of content to or from a target node, scheduling transfer operations among nodes, adding or removing nodes from the network, maintaining security, and other operations. Different embodiments may use one or more of the functional features. In a preferred embodiment, video content is segmented and streamed through multi-path routing. An overlay network uses nodes in partnership groups so that a target node can obtain segments from multiple sources. Partner nodes can provide the segments within a given time window, including simultaneous delivery from multiple partner nodes, so that a more reliable data stream is supported.

A method and apparatus for controlling and managing a flow. The apparatus classifies a flow management space into a plurality of spaces, detects a heavy load-flow in the classified flow management space, and adjusts variably the flow management space due to a control traffic processing overhead, transmits the detected heavy load-flow according to a weight of each forwarding path through multi-path routing, and balances traffic.

The invention designs a Ad Hoc network multipath route technology based on label exchange, which includes sending opposite label when sending route request information, sending positive label when sending route reply information and establishing a plurality of bidirectional label exchange routes and local node repair based on label exchange route. The protocol brings MPLS label exchange technology into Ad Hoc network and can improve the network throughput, transmission time delay and service quality and realize traffic engineering in Ad Hoc network.

The invention relates to a wireless sensor network data collection method applied to real-time monitoring, which comprises two processes of routing building and data transmission. In the router building process, a common coding mode is adopted, the data packet is subjected to cyclic redundancy check and then multipath routing meeting the requirements is built according to the load, link channel quality, hop number and other indexes; and in the data transmission process, a common coding mode or an enhanced type coding mode can be adopted, when the wireless channel conditions are poor, the enhanced type coding mode is adopted, that is, the data packet is subjected to segmentation, cyclic redundancy check, channel coding and bit interleave, whether the routing is switched is judged according to the current load of a father node in a routing list at the same time, when data packet is retransmitted, a physical layer, a data link layer and a routing layer are needed to be combined, multipath routing of the neighbor node of the father node is started for coordinated transmission, and a receiving node adopts a data packet receiving pooling technique. The wireless sensor network data collection method has the advantages of high routing building speed, low routing maintaining expense, high data transmission reliability and low time delay.

A routing system rapidly determines whether messages received by a data transaction processing system related to data objects in a computing system should be routed through or bypass integrity modules designed to detect and mitigate undesirable object conditions. The routing system may, in one embodiment, rely upon previous decisions made by the integrity modules. The routing system may also access data structures storing information about a current environment state to determine whether a message should be routed through the time consuming integrity modules. The routing system may additionally determine and specify which values associated with a message should be checked against integrity module logic.