176 results about "Traffic optimization" patented technology

A method includes provisioning joint bandwidth in a software defined passive optical network PON based mobile backhaul MBH and cache management on base stations for video delivery across the network, the provisioning in each time unit includes grouping bandwidth utilization in the network into a first category used to support video requests which cannot directly be served by caches on base stations, the first category video requests being high priority, and if bandwidth remains after the high priority requests remaining bandwidth being used to deliver some videos that are low priority to caches.

The invention discloses an optimal control method for intersection group traffic flow, which resolves the defect that the smallest unit of current urban traffic control is a single intersection, which cannot satisfy the needs of actual traffic control, can realize the optimization of local traffic flow, and provides helps for micro control of traffic flow. The steps of the method are:(1) real time acquiring actual traffic flow of ''intersection group'' on roads through a ground induction coil which has been paved in a city; (2) constructing an optimal control model with a smart approach and inferring and optimizing the parameters of a controller according to real-time traffic information;(3) the controller carrying out optimal control for traffic flow according to the control model.

The invention discloses a distributed gateway, a message processing method and a message processing device based on the distributed gateway, which aim at improving the flexibility and expandability of network deployment, realizing load sharing and traffic optimization, and improving efficiency. The distributed gateway comprises a plurality of network virtualization endpoints (NVE). Each NVE has the same virtual internet protocol (VIP) address and the same virtual media access control (VMAC) address. Each NVE establishes interconnecting tunnels with other NVEs through the IP address of an outer layer tunnel. Each NVE is configured with a routing protocol for releasing a network segment route of a corresponding subnet.

The invention discloses a comprehensive energy-saving control method and method for integrating optimized manipulation and traffic scheduling for urban rail transit. The method comprises the following steps of collecting train scheduling information, train operation parameters and train road condition information according to a train operation line; partitioning and dividing the train operation line into a plurality of segments, and obtaining an accelerating stage and a regenerated brake stage according to the train road condition information of each segment; establishing N traffic scheduling control sequences according to accelerating points and regenerated brake points in the segments, train departure intervals and train operation number, and constructing N traffic scheduling control models according to the N traffic scheduling control sequences; calculating the total energy consumption of each traffic scheduling control model so as to obtain the traffic scheduling control model corresponding to the lowest total energy consumption; and obtaining a traffic scheduling control timetable according to the traffic scheduling control model corresponding to the lowest total energy consumption. The timetable has the advantages of being capable of coordinating the balanced relation among the train number, the operation parameters and regenerated brake in a self-adapting manner, high in calculating efficiency, precise in computation and the like.

The invention provides a traffic control optimization method and device. The method comprises the following steps: obtaining traffic data of a road intersection, wherein the traffic data comprises data for expressing geometric features and dynamic features of the intersection road, the dynamic features comprising a traffic signal control scheme and traffic conditions under the traffic signal control scheme; obtaining road traffic saturation degree of the intersection according to the traffic data; then, comparing the road traffic saturation degree and a preset judgment threshold range, determining a final traffic optimization objective according to the comparison result, and obtaining an intersection channelization design and traffic signal control integrated optimization plan according to the traffic data and the final traffic optimization objective. The traffic control optimization method and system can carry out integrated optimization on intersection channelization design and traffic signal control simultaneously, thereby improving matching degree between the two and alleviating traffic congestion degrees.

A method for transmitting signals, consisting of receiving a plurality of signals generated in an isolated region, the signals encoding respective individual payloads and payload envelopes. At least two of the signals operate under different protocols. The method includes deriving information from the signals on respective connections of the signals, and aggregating the payloads into one or more aggregated payloads. The method further includes transmitting the one or more aggregated payloads and the information via a satellite link to a receiver outside the region, the one or more aggregated payloads and the information amounting to less data than an aggregated amount of data in the individual payloads and payload envelopes. The method also includes reconstituting the plurality of signals at the receiver using the one or more aggregated payloads and the information.

A method of optimizing network traffic includes, in part, measuring amounts of traffic exchange between each of a multitude of hosts disposed in the network, identifying a network domain to which each of the multitude of hosts is connected, calculating a net increase or decrease in inter-domain traffic associated with moving each of the multitude of hosts among the network domains in order to generate a list, and ranking the list of moves by net saving in the inter-domain traffic. The highest ranked move may be automatically applied so as to change the network domain to which the host associated with the highest ranked move is connected. The hosts may be virtual machines. Optionally, a change in the inter-domain traffic as a result of moving a first host in accordance with the list occurs only if one or more conditions are met.

The invention discloses a Storm task deployment and configuration platform with cluster adaptability, and belongs to the field of real-time streaming data computing and processing. Through the platform, a Storm cluster can sense internal communication traffic among nodes and remaining resources, and perform running process number configuration self-adjustment according to a topology task demand published by a user and the cluster remaining resources, so that the limitation of the need of artificially specifying a process number in a conventional Storm scheduling method is broken through. A friendly centralized communication traffic monitoring interface is provided for the user by the platform, and is convenient for the user to call in a task program, so that load and resource awareness is realized. Moreover, a one-phase commitment scheduling method which is different from a conventional Storm two-phase commitment scheduling method is implemented on the platform in an embedding way, and communication traffic optimization among different processes at the same node is realized. Through adoption of the Storm task deployment and configuration platform, optimal scheduling can be realized by setting of basic optimization threshold parameters, and great convenience is brought to a cluster user and a manager.

The invention provides a traffic signal global control method and system based on the radio frequency identification technology. The method comprises the steps that traffic information in all directions of a traffic light road junction is collected, wherein the traffic information is used for reflecting the traffic jam situation in the directions; traffic coordination information sent by an adjacent traffic light road junction is received, and used for indicating the current situation of control of the adjacent traffic light road junction over traffic jams; working conditions of traffic lights in all the directions of the traffic light road junction are controlled according to the collected traffic information and the received traffic coordination information. The traffic signal global control method and system based on the radio frequency identification technology can achieve comprehensive traffic optimal control, and traffic jams can be further relieved compared with a scheme which carries out traffic light control only with consideration of the traffic jam on the current road junction.

An enhanced push to talk (PTT) method, a network, and a PTT server provide floor control and media traffic optimization for push to talk over cellular (PoC). Specifically, multiple Session Initiation Protocol (SIP) sessions are contemplated between controlling and participating servers while only requiring a single Real Time Protocol (RTP) session for media and a single Real Time Control Protocol (RTCP) session for floor control. In the single RTP and RTCP session, the synchronization source identifier (SSRC) can be used to differentiate between users equipment (UEs) at the controlling and participating servers.

The present invention provides a system and method for providing global traffic optimization for a mix of applications running at multiple locations connected by a WAN Various means are provided via WAN accelerator, edge shapers, and WAN bandwidth, route, QoS, and packet control to maximize application performance while minimizing cost, in accordance with customer policy.

The invention discloses an online evaluation method and system of the control effect of a traffic signal controller. A detector arranged at a signal intersection carries out real-time traffic flow data collection; a traffic signal controller collects signal light data in real time and uploads the collected data to a road detector database and a traffic signal controller database at a server side;and real-time extraction and processing are carried out on the collected data at the server side, basic traffic parameters are calculated, software calculates an evaluation index of a traffic signal controller control effect based on the parameters and stores the result into a control effect evaluation database so as to complete online evaluation. Therefore, traffic signal optimization can be carried out based on the evaluation data and the optimization information is fed back to the traffic signal controller to realize dynamic traffic signal control.

The invention discloses a single-intersection traffic signal optimization control method based on public transport priority, and the method comprises the steps: S1, building a single-intersection traffic signal timing optimization model based on the public transport priority, and calculating a target function; S2, initializing the position and speed of each particle in a particle swarm through employing a chaotic strategy, calculating the adaptability value of the particles according to the target function, and setting the overall initial optimal solution of the current particle swarm and the initial optimal solution of the particle individuals; S3, judging whether the position and speed of each particle in a solution space of the target function are convergent or not according to the concentration degree of the particle swarm: outputting the optimal solution in the solution space if the position and speed of each particle in the solution space of the target function are convergent; S4, updating the position and speed of each particle according to an adaptive inertia weight if the position and speed of each particle in the solution space of the target function are not convergent, carrying out the iterative updating of the overall optimal solution of the current particle swarm and the initial optimal solution of the particle individuals, returning to and carrying out step S3 till the position and speed of each particle in the solution space of the target function are convergent, and outputting the optimal solution; S5, carrying out the single-intersection traffic optimization control based on public transport priority according to the priority. The method enables the delay of a bus to be minimized.

A message traffic optimization system for reducing the size and quantity of messages is provided. The message traffic optimization system comprises a message traffic analysis module for analyzing message headers belonging to a plurality of messages, and a message traffic grouping module for grouping the messages into a bundle.

A system and method for the implementation of fine-grained quality of service in a mobile telecommunications environment uses an Auto-IP Policy Decision Point (PDP) to determine what traffic optimizations actions should be taken in reaction to various network conditions. The Auto-IP PDP uses as inputs information from a Gb interface probe to determine the user identification of an IP data flow, information from the radio access network (RAN) network management system (NMS) regarding network congestion. The cell traffic information is passed onto a traffic analysis and processing engine, the Auto-IP PDP which maps the real-time traffic information into an n-dimensional traffic model. An automated policy decision guiding algorithm is executed on the n-dimensional traffic model and selects policy based on the traffic and cell congestion conditions, without human intervention. Additionally, a consistency check is performed to ensure that new policies are consistent with existing policies. The policy decision outcome is forwarded to the Auto-IP Traffic Optimizer that acts on the network at a point in the network (Gi) that is different from where traffic problem occurs in the RAN. The Auto-IP Traffic Optimizer implements the decisions of the Auto IP-PDP by performing traffic shaping, TCP window clamping or other traffic optimization procedures on a cell-by-cell basis.

The invention discloses a method and a system for realizing traffic optimization in a peer-to-peer network. The method comprises the following steps of: performing linear weighing on bottom characteristic parameters affecting communication overhead to obtain a total overhead value of links among different nodes; and determining a network priority sequence containing node information according to the obtained total overhead value, wherein the node information indicates nodes of a client for communication interaction. Compared with the prior art, the method and the system for realizing traffic optimization in the peer-to-peer network do not need to restrain P2P traffic, have no problems or defects of complex deployment equipment and the like, localize the P2P traffic to reduce cross-domain traffic, can process different P2Ps, coordinate diversity and particularity of P2P services, and optimize user experience of the P2P.

The invention discloses a city traffic optimization service method and system based on swarm intelligence; the method comprises the following steps: simulating local traffic situations according to swarm intelligence, and selecting a local scheduling strategy allowing each vehicle driving time and the local traffic situations to reach balance according to the simulation result and a local trafficoptimization target; using swarm intelligence to simulate the global traffic situation, and selecting a global scheduling strategy allowing the local traffic situation and the global traffic situationto reach balance according to the simulation result and a global traffic optimization target; recommending optical routes for each participating vehicle according to the swarm intelligence calculation result, thus realizing city traffic optimization services; finally, using the method to realize the city traffic optimization service system based on swarm intelligence. The system comprises a vehicle mounted platform, a situation cognition system and a swarm intelligence decision and control system, and aims to improve the city traffic optimization service decision enforceability and validity.

The invention provides an MD (multicast domain) based multicast VPN (virtual private network) traffic optimization method and equipment. The technical scheme includes that the control equipment acquires multicast tunnel resource information configured by a source PE (provider edge) device for a VPN and private network multicast streams needing to be received by each PED device, when a multicast distribution tree switching request sent by the source PE device aiming for the private network multicast streams is received, data multicast group addresses are allocated to the private network multicast streams according to the acquired information, and the source PE device switches the private network multicast streams to Data-MDTs (multicast distribution trees) corresponding to the private network multicast streams. By the method and equipment, multicast tunnel resources on the PE devices can be saved, consumption of public network multicast routing table items and invalid flooding of public network multicast traffic are reduced.

The invention discloses an automatic analysis method for traffic performance of a PTN (Packet Transport Network) ring network. Point-line-surface comprehensive analysis is carried out on device port traffic, service tunnel traffic and ring network traffic. The method aims at PTN devices of different manufacturers such as Huawei/ZTE/FiberHome, and the point-line-surface comprehensive analysis is carried out on the device port traffic, service tunnel traffic and ring network traffic. Centralized and three-dimensional control is carried out on the traffic of the PTN devices of different manufacturers. The important support significance is provided for traffic operation and traffic plan optimization.

The invention discloses a traffic organization and signal control method facing a left-and-right type staggered intersection. The basic principle of the invention is to, by targeting the left-to-right type staggered intersection, optimally use the intersection staggering space and the optimally design the signal timing of the intersection on the basis of the traditional intersection design. The traffic organization and signal control method fully uses the time space resource of the intersection, reduces the purging time in a signal period, and improves the traffic capacity of the left-to-right type staggered intersection. In order to achieve that, the traffic organization and signal control method disclosed by the invention comprises steps of performing data collection on the related parameters of the intersection, performing intersection traffic organization design, performing the intersection signal optimization timing, and determining whether the intersection satisfies the preset condition and chooses the corresponding scheme.

Improvement method for traffic organization of three-lane road and crossing belongs to city road design and traffic management field, applying the road sectional distribution type of footway, automobile way and bicycle way, regulating the order of the automobile way and bicycle way, optimizing the crossing traffic organization with the method that laeotropic automobile turns around the block and the bicycles are lead farther, improving the capacity of the city grade crossing and the road average speed in the condition of two-phase crossing signal control in the crossing. The invention can be used for city road network modification and road network construction.

The invention discloses an urban traffic signal optimization method and an urban traffic signal optimization system. The method comprises the following steps of judging whether a current urban fragmented region is reasonable or not according to the signal period duration, the spatial position and the traffic flow of an intersection on a trunk; judging whether an urban fragmented region control strategy is reasonable or not when the current urban fragmented region is judged to be reasonable; if the urban fragmented region control strategy is judged to be reasonable, determining whether an optimized space exists in the coordination of road sections or not; if no optimized space exists in the coordination of road sections, judging whether the intersection needs to be optimized or not; if theintersection needs to be optimized, carrying out the signal control, the traffic organization and the traffic order optimization on the intersection. In this way, the traffic signal optimization is carried out on the whole city level. The traffic jam can be relieved. Meanwhile, the signal optimization can be performed specifically. The optimization efficiency of the optimal technical personnel isimproved, and the ordered development of signal optimization work is guaranteed.