88 results about "Network coordinates" patented technology

Systems and methods that improve predictions of network latency in network coordinate systems (NCS) based on combining Internet topology information therewith. Topology information can be incorporated into the NCS by system/methodologies represented by geographic bootstrapping; autonomous system (AS) correction; history prioritization; symmetric updates or a combination thereof. Such can improve latency estimation between nodes when using a virtual coordinate system based on latency measurements between nodes.

In a method of mapping peers in a peer-to-peer network to an overlay network, network coordinates are determined for a selected peer. The logical coordinates in the overlay network are determined based on the network coordinates. A zone is determined based on the logical coordinates. The network coordinates, a network address of the selected peer and the zone is stored as an object at a peer owning the zone, where associated information is stored in the peer that has the network coordinate and using the network coordinate as a key.

The invention discloses a wireless network, which comprises wireless communication systems of different standards. In addition, the wireless network comprises a different network coordinating device which is used for the coordination and switching between wireless communication systems of different standards or the coordination and process of a plurality of attachments to user equipment. The invention further discloses a corresponding user equipment switching and attachment method, which can provide convenient intersystem intercommunication, attachment, and optimized switch performance on the premise of keeping the access system standards developing independently and reducing the cross linkage.

The invention relates to the field of electric automobile charging pile monitoring and management, in particular to an electric automobile charging pile time sharing monitoring and management system.The electric automobile charging pile time sharing monitoring and management system comprises a commutation control and management device, a power distribution monitoring and management device, an alternating current charging pile, a direct current charging pile, a network operation management platform and a mobile phone APP client side. The commutation control and management device and the powerdistribution monitoring and management device are connected with a transformer and conduct Ethernet communication with the network operation management platform through communication units, the network operation management platform is connected with main control units of the alternating current charging pile and the direct current charging pile in an Ethernet communication mode, and the network operation management platform communicates with the mobile phone APP client side. The electric automobile charging pile time sharing monitoring and management system has the beneficial effects that vehicle-pile-network coordinated dispatching of a community power grid is achieved, the vehicle and pile management capacity of a charging station can be improved, and higher charging service benefits areobtained.

The invention discloses a network coordinate-based server deployment method and a network coordinate-based server deployment device, which are used for avoiding limit to an alternative node during network server deployment and improving the flexibility and expandability of network server deployment. The method comprises the following steps of: determining network coordinate reference points based on a plurality of preset detection nodes; determining a network coordinate system according to the network coordinate reference points; mapping target clients to the network coordinate system, wherein each target client corresponds to a coordinate point in the network coordinate system; saving the mapping relation between each coordinate point and the network address of each target client; gathering the coordinate points acquired by mapping of the target clients in the network coordinate system to a plurality of mass centers respectively; and determining the deployment position of a server according to plurality of mass centers, wherein the mass centers are used for representing the central positions of the plurality of target clients in the network coordinate system. The invention also discloses a network coordinate-based server deployment device.

The invention discloses a method and device for determining physical location information. The method comprises the following steps: selecting preset quantity of reference IP addresses, and establishing a network coordinate system comprising the reference IP addresses and to-be-processed IP addresses, wherein physical location information of the reference IP addresses is determined; delimiting an identifiable area of the to-be-processed IP addresses in the network coordinate system; and determining the physical location information of the to-be-processed IP addresses according to the physical location information of the reference IP addresses in the identifiable area. By adopting the scheme, the dependency level on third party data when the physical location of the to-be-processed IP addresses is determined can be reduced or even removed, and the accuracy of determining the physical location is improved. Meanwhile, compared with an existing mode of deducing the physical location information according to the search result of the third party, the method has the advantage that the accuracy of the physical location is improved.

The invention discloses a method for selecting transfer nodes in a P2P system. The method comprises the following steps: a source node calculates the sum of the Euclidean distance between each neighbor node in a neighbor list and the source node and the Euclidean distance between the neighbor node and a target node according to coordinates of nodes; the source node sends a routing inquiry request to the neighbor nodes having the minimum sum of the Euclidean distances; the nodes receiving the routing inquiry request execute the same steps as the source node; and the source node sets the Nth node receiving the routing inquiry request as a transfer node. As network coordinates can reflect the delay conditions between nodes more accurately, the gradually approaching inquiry mode which has good astringency can select a better transfer node without support from a special inquiry server, is free from limitation of the processing capacity of a server and is easy to expand, low in cost and good in effect. The invention also discloses a P2P node.

A system and method for providing mobile assisted, fixed line communication. A device connectable to a mobile network coordinates with a session gateway device that is connected to a fixed line network in order to establish a connection to another gateway device. Signaling over a cellular or other non-fixed line network is used to establish connection parameters relating to a fixed line session. The established connection parameters are transmitted to the respective session gateway devices. Based upon these parameters, the session gateway devices can directly communicate with each other over the Internet or other fixed line network.

The invention relates to a source network coordinated scheduling method for improving wind electricity admitting ability of power grid. Aiming at problems existing in large-scale wind electricity networking operation in China that transmittability of the power grid is limited and wind turbine generator preparing to enter network can not be scheduled to enter network. Steps are adopted that confirming transmit electricity space of a path of transmitting wind electricity, confirming relationship between the max generated power of wind electricity and installed capacity of wind electricity, ensuring that scheduling scheme of safe operation of the power grid is disposed conservatively and the like, so that under the condition of ensuring grid security, the transmittability of the power grid is used to the maximum, generated energy of wind turbine generator is increased obviously, and waste wind of the wind electricity is reduced. Economic benefit and environmental benefit of utilizing wind energy are improved.

The invention provides a method for aggregating a security situation of a hierarchic network, which is used for calculating a total security situation value of the hierarchic network comprising a plurality of subordinate subnets and master subnets. The method comprises the following steps of: acquiring network security situation values of all the subnets and network security events influencing the network security situation values; determining the distribution degree of each network security event in the hierarchic network according to each acquired hierarchic network event, and determining the influence of all the network security events on a network coordinated attack of the hierarchic network, namely a total coordinated attack factor; and determining the weight of each subnet and the network coordinated attack to the hierarchic network, and calculating the total security situation value of the hierarchic network according to the determined weight, the acquired network security situation values of the subnets and the determined total coordinated attack factor. By the method, the rationality and the accuracy of aggregation of the network security situation can be improved effectively.

Embodiments of the invention provide systems and methods for orchestrating or coordinating interactions between different types of networks such as a legacy network and a next generation network. According to one embodiment, a method for coordinating interactions between different types of networks can comprise receiving at a service layer component a communication in a communication session from a first communication network. The communication can be in a first protocol. The communication can be translated from the first protocol to a second protocol with the service layer component, wherein the first protocol is different from the second protocol. One or more additional service layer components for providing at least one service in the communication session can be identified with an application dispatcher of the service layer component. The translated communication can be dispatched to the one or more additional service layer components from the application dispatcher.

The invention relates to a railway existing line control measuring system based on a satellite navigation and positioning reference station network. The railway existing line control measuring systemis divided into a primary stage and a secondary stage; on the one hand, a data centre acquires precise primary stage network coordinate time series through automatic global navigation satellite systemdata processing, precise coordinates of a frame point are updated according to coordinate change difference, and in this way the dynamic updating maintenance of a primary stage network coordinates iscompleted; and on the other hand, when a primary stage network cannot meet a service requirement, a global navigation satellite system receiver is installed on the nearest secondary stage network control pile point of an operation point, observation data is transmitted to a data process centre in real time, the data process centre then acquires precise coordinates of the secondary stage network control point through the quick automatic global navigation satellite system data processing, and the precise coordinates are updated according to the coordinate change difference, so that periodical updating maintenance of coordinates of the control point of the secondary stage network is achieved.

The embodiment of the invention provides a method and device for pairing wave beams among devices, wherein the method for pairing the wave beams among devices comprises the steps: the devices send first wave beam pairing requests to a network coordinating device, wherein the first wave beam pairing requests are used for obtaining the number of an optimal wave beam zone of opposite-end devices of the devices in the network coordinating device, the opposite-end devices are used for communicating with the device, and the coordinate system of the devices and the coordinate system of the network coordinating device are aligned; according to the number of the optimal wave beam zone of the opposite-end device in the network coordinating device, sent by the network coordinating device, the devices determine the minimum wave beam zone set of the opposite-end devices in the optimal wave beam zone of the network coordinating device in the wave beam zone set of the devices; and in each wave beam zone in the minimum wave beam zone set, the devices send a training sequence to the opposite-end devices or receive the training sequence sent by the opposite-end devices. According to the embodiment of the invention, the devices can be avoided sending or receiving training sequences in unnecessary wave beam zones, thus delay in pairing of the wave beams among the devices is reduced, and the power consumption of the devices is decreased.

The invention relates to the technical field of communication, and discloses a method and a system for determining the deployment scheme of service nodes. The method comprises the steps: changing a target network into a network coordinate space; determining network coordinates of each user in the network coordinate space; clustering all users, and taking the network coordinates of center points of N classes obtained through clustering as the network coordinates of N service nodes which need to be deployed, wherein N is equal to the number of the service nodes which need to be deployed; reversely changing the network coordinates of the service nodes to a physical space; and determining the physical location of each service node and an ISP (Internet service provider). Through the execution of the embodiment of the invention, candidate points for the deployment of the service nodes are extended to the whole network, and the suitable positions in the whole network are searched for the deployment of the service nodes according to the distribution of users in the network.

The embodiment of the invention discloses a method for measuring network time delay. The method comprises the steps of looking up available basic facilities for network time delay measurement in a network and establishing network coordinates for the available basic facilities and all network device terminals to be measured, determining available basic facilities closest to the network device terminals based on the network coordinates of the available basic facilities and the network device terminals to be measured, measuring network time delay between any two available basic facilities by transmitting a message for measurement between the two available basic facilities, and determining that the network time delay between the available basic facilities closest to any two network device terminals to be measured is the network time delay between the two network device terminals to be measured. By means of the method for measuring the network time delay, accurate network time delay measurement can be achieved under the condition of smaller network load. In addition, the embodiment of the invention further discloses a device for measuring network time delay.

The invention provides an SVM (Support Vector Machine)-based Web partitioning method, which comprises the steps of: partitioning all Websites into N groups; taking K=1, 2, 3, ......,N, for the value of each K, selecting Website samples in the 1st-(K-1)th, (K+1)th-Nth groups, and initializing LibSvm training; training LibSvm; storing a trained SVM model; selecting a Website sample in a Kth group to perform a Web partitioning test; and saving the Web partitioning test result. According to the method provided by the invention, the generalization capability of the SVM is strong, fault tolerance and classification can be better performed when louder noise data are processed. The accuracy rate of coordinates established by a network coordinate system is approximately 80 percent, the problem of nonlinear classification can be solved by the SVM, the number of classification by the SVM is fixed, the extreme condition that no crawler crawls on a website is avoided, and the uncertainty of partitioning the number of a set in the clustering algorithm is overcome by using the classification algorithm.

The embodiment of the invention discloses a method and device for coordinating neighbor network interference, wherein the method comprises the following steps: confirming a first station in every coordinating network in a coordinating group, and a second station in a requesting network outside the coordinating group, wherein disturbance exists between the a first station and the second station; obtaining a first pre-scheduling information of the first station and a second pre-scheduling information of the second station in the same beacon period; judging whether collision exists between the first pre-scheduling information and the second pre-scheduling information or not, if yes, adjusting the first pre-scheduling information or the second pre-scheduling information; and if not, maintaining the first pre-scheduling information and the second pre-scheduling information. By adopting the method provided by the invention, the problem of network resource wastage emerged during the process of neighbor network coordinating in the prior art is solved.

The invention discloses a drilled well target hitting status assessing method and device and belongs to the field of oil drilling. The method comprises obtaining the position of the mouth of a drilled well to be assessed; dividing the well track of the drilled well to be assessed into multiple measuring sections from the well bottom to the well mouth, and obtaining the depth of every measuring section as well as the azimuth angle and the inclination of the final point of every measuring section relative to the start point of the measuring section in a geological coordinate system; viewing the azimuth angle of the final point of every measuring section relative to the start point of the measuring section in the geological coordinate system as the azimuth angle of the measuring section in a network coordinate system, calculating the position of the bottom of the drilled well to be assessed; calculating correcting values through formulas; correcting the position of the well bottom though the correcting values; comparing the corrected position of the well bottom with the preset position of the well bottom of the drilled well to be assessed. The device comprises a first obtaining module, a second obtaining module, a first calculating module, a second calculating module, a correcting module and an assessing module. The drilled well target hitting status assessing method and device can overcome deviation due to the fact that the azimuth angle of the geological coordinate system serves as the azimuth angle of the network coordinate system for calculation.