117results about How to "Reduce the amount of interaction" patented technology

A non-supervision clustering-based distributed cooperative spectrum sensing method for a cognitive self-organizing network relates to the field of cognitive radio in wireless communication technology. Aiming at solving the problems of difficult distributed cooperation of the cognitive self-organizing network and large overhead of whole-network cooperation, the method adopts the latest achievements of a non-supervision clustering theory and a co-recognition theory to achieve fully-distributed, steady and reliable distributed cooperative spectrum sensing under the condition of simplifying the overhead of network sensing; and users with potential optimal detection performance spontaneously gather only via information interaction between neighbors, further the users carry out cooperation spectrum sensing by utilizing an average co-recognition protocol, and a sensing result is broadcast to the whole network users. The method does not require local users to receive apriori information of noise-signal ratio, and does not need any central controllers, thereby greatly lowering sensing overhead and acquiring detection performances similar to optimal soft combination solution.

The invention provides a user identification method and device, wherein the user identification method comprises the steps of: selecting messages from network access log messages, wherein the messages are same with a user identification within a set time period and are in one-to-one correspondence to website COOKIEs of a set website; obtaining tetrad information from the obtained messages, wherein the tetrad information comprises domain names of user access websites indicated by the user identification, the user identification, COOKIE fields of the user access websites, and values of the COOKITE fields; performing statistics on the tetrad information to obtain access information of each user access website; filtering the access information of each user access website to obtain the COOKIE filed of the identification user of each user access website; and establishing the correspondence of the obtained COOKIE field and the user identification, and identifying the user according to the correspondence. According to the invention, the effect of accurately identifying the user is achieved.

The invention discloses a video image pickup method with consistent time and space domains, of digit video process, which comprises that (1), interactive disperse that user interacts on a three-dimension video element, and obtains a shield via disperse calculation, and divides video element into foreground area, background area, and unknown area, (2), picking iterated video image that calculating out the alpha value of each point on the three-dimension video element as non-transparency, (3), foreground reconstruction with consistent time and space domains that according to the alpha value, calculating out the foreground color value with continuity at time and space domains. The inventive method can quickly, effectively, and high-quality pickup image of video, which can resolve the problems of prior video pickup method as discontinuous result and long process time, with high practicality.

The invention aims to provide a data storage method, apparatus and system. According to the data storage method, apparatus and system, data is stored by cooperation of a data storage device and a distributed data storage system, wherein the data storage device is used for obtaining to-be-stored data and locally storing the data; the data storage device is further used for sending local verification information and identifier information of the data determined according to the content of the data to the distributed data storage system for updating global verification information of the data according to the identifier information and the local verification information of the data sent by at least one data storage device; when a data access request is received, the data storage device is used for obtaining the global verification information of the data from the distributed data storage system; and when the local verification information and the global verification information of the data are consistent, the data storage device is used for providing the locally stored data.

The invention provides a method and a device for user identification. The method includes acquiring users' visiting information; inquiring first relation tables according to users' IP (internet protocol) addresses, and judging whether corresponding relations exist between the IP addresses and relation pairs or not; and if yes, returning corresponding user identifications according to the users' IP addresses, and identifying users according to the returned user identifications. The visiting information includes the users' IP addresses, domain names of websites visited by the users and the relation pairs of cookie information of the websites visited by the users. User information and information of website domain names and website cookie information relation pairs corresponding to the user information are stored in the first relation tables. The user information includes the IP addresses and the user identifications. By aids of the method and the device, servers can accurately identify client sides and users.

The invention provides a host discovery method and system based on an SDN. The method comprises steps that 1) a controller obtains switch topology information of a whole network; 2) the controller generates a switch-level broadcast tree based on the switch topology information of the whole network and a tree establishment tree, and configures and distributes related flow tables for each switch according to the generated broadcast tree; and 3) each switch forwards ARP host searching information according to the distributed flow tables, the ARP host searching information is enabled to be broadcasted in the whole network along the broadcast tree, and a target host can be found in an effective manner. The controller is freed from the tedious host discovery task which is handled by each switch, and thus the workload of the controller is lowered, and the controller is enabled to have more functions to deal with other management and control work in the SDN. The host searching information is enabled to be broadcasted in the whole network along the switch-level broadcast tree in a radiating mode, and thus the effective host discovery is achieved.

The invention discloses a distributed nonequilibrium edge cloud network access and resource allocation mechanism and belongs to the field of mobile cloud computing and mobile edge computing. Accordingto the mechanism, when each round of resource allocation is carried out, for multiuser multitasks, service requests are sent to radio access base stations and edge cloud servers in the optimum pathsbased on available radio access base stations and edge cloud servers; if resources required by the service requests of the edge cloud servers exceed the maximum available resources, the tasks are reserved, and the other user tasks are refused; and the edge cloud servers update current service user task sets according to refuse information, and for the refused user tasks, the steps are repeatedly carried out based on updated data, until all user tasks are unloaded completely or all tasks have no accessible radio access base stations and edge cloud servers. According to the mechanism, total multiuser multitask unloading delay-energy consumption-cost weighted sum can be clearly reduced.

The invention aims at reducing the energy consumption problem resulting from network reconstruction and providing an expandable wireless sensor network clustering method. In a selection process of candidate cluster heads, the residual energy of nodes in the network is taken into consideration; and in the selection process of cluster heads, factors such as the residual energy of candidate nodes, the number of neighbor nodes of the candidate cluster heads and the value degree from each node to the candidate cluster heads are taken into consideration, so a life cycle of the network can be prolonged. When the average energy in clusters is greater than certain threshold, re-clustering does not need to be carried out in a whole network range, and the new cluster heads are only selected in the clusters. When new nodes add the network, network access permission values are introduced, the clusters to which the nodes need to add are selected by taking position distribution of the nodes, the energy of the cluster head nodes and load values of corresponding clusters into consideration.

The invention discloses an energy-saving transmission self-adaption recursive least squares (RLS) distributed-type detection method of a wireless sensor network. Through the updating process of an increment of a distributed-type RLS weight number, the situation that measurement data of all-network nodes are utilized to train the distributed-type RLS weight number of a medium bridge of a bridge node set is achieved, convergence performance of an RLS algorithm is ensured, and the convergence performance is equivalent with that of an existing all-network distributed-type RLS algorithm. Distributed-type RLS weight number estimation is conducted on bridge nodes, adjacent transmission of the weight number is conducted on a sub-network of the bridge nodes, transmission updating of the weight number is achieved, and distributed-type detection is achieved. The energy-saving transmission self-adaption RLS distributed-type detection method of the wireless sensor network has the advantages that all-network parameter calculation and transmission in the prior art are avoided, communication traffic and node operation quantity are reduced, energy consumption is saved, and stability is high. In addition, the RLS weight number is calculated on the bridge nodes, all-network node data information is utilized, and performance of the algorithm is ensured. Under conditions of less energy consumption and lower network communication traffic, all-network detection performance can be achieved, and performance of the wireless sensor network is improved.

The embodiment of the invention provides a service provider determining method, a service provider determining device and a service provider determining system. The method comprises the steps of: determining a public account of a network public platform corresponding to service to be concerned; sending request information of the public account to a platform server; receiving business server address information which is returned by the platform server and corresponds to the public account; according to the address information, sending condition information for determining a target service provider to the business server; and after the business server receives the condition information, according to a corresponding relation between the preset condition information and the service provider, determining the target service provider corresponding to the condition information. In a process of determining the target service provider, information interaction amount between the network and user equipment is reduced, and consumption of network traffic is reduced.

The invention relates to the technical field of MIPI liquid crystal display modules, and in particular relates to a device and method for realizing parallel multi-channel MIPI (Mobile Industry Processor Interface) module screen touch adjustment based on a FPGA (Field Programmable Gate Array). An upper software interface sends data including same data and different data to a parameter processing module; the parameter processing module respectively stores and processes the data and sends the data to a multi-channel control module; the multi-channel control module respectively outputs the same data to each MIPI screen touch adjustment module, and simultaneously transmits the different data to the corresponding MIPI screen touch adjustment module according to a corresponding channel number; and the MIPI screen touch adjustment module realizes module screen touch, conversion from RGB (Red Green Blue) image data to data in the MIPI format and MIPI parameter adjustment of the module. According to the invention, the data interaction amount can be reduced; the number of software and hardware interactive interfaces can be reduced; the transmission rate is increased; the FPGA resource utilization rate and the power consumption thereof are reduced; the time sequence stability of the system is facilitated; subsequent function integration is convenient; parallel screen touch adjustment of a plurality of MIPI modules can be really realized; and furthermore, the plurality of MIPI modules are not interfered with each other and independent respectively.

This invention discloses a method and a system for operating net elements synchronously by a net management, in which, the method includes: the management updates corresponding data in a database based on the changed service data recorded in the service data alteration registration when operating synchronously, in this way, it is not necessary to poll all data on the net elements in each time of synchronous operation so as to reduce the interaction volume of data between net elements and management and time.

The invention provides a precoding method based on interference alignment, which comprises the steps of calculating decoding matrixes of a plurality of cells by using channel state information between a receiver and a base station, acquiring and calculating a precoding matrix of a transmitter according to up channel state information of the cell where the receiver is located, and a decoding matrix of the cell where the receiver is located, and precoding down data according to the precoding matrix of the transmitter. The method obtains the decoding matrixes of the cells, calculates the precoding matrix of the transmitter according to the decoding matrixes of the cells and precodes the down data according to the precoding matrix, so that the interactive quantity of channel information and the antenna quantity of a client are effectively reduced, and the system complexity is reduced.

The invention discloses a train comprehensive dispatching system, a dispatching method and a train signal control system. The dispatching system comprises a comprehensive dispatching non-security network, a dispatching control terminal, a comprehensive dispatching server and a security gateway, wherein the comprehensive dispatching non-security network is used for establishing connection between the dispatching control terminal and the comprehensive dispatching server and establishing connection between the comprehensive dispatching server and the security gateway; the dispatching control terminal is used for receiving control information configured by a user in a corresponding target application according to a preset control demand and sending the control information to the comprehensivedispatching server; the comprehensive dispatching server is used for generating a corresponding control instruction according to the control information and sending the control instruction to the security gateway through the comprehensive dispatching non-security gateway; and the security gateway is used for establishing connection with controlled equipment and sending the control instruction sentby the comprehensive dispatching server to the controlled equipment so as to enable the controlled equipment to execute a corresponding operation according to the control instruction.

The invention discloses a VSF-based link fault detection method and a device. The method comprises the steps of receiving a heartbeat message sent by an opposite terminal from a port where link negotiation of a network device succeeds; acquiring destination port information of the heartbeat message, and setting the timeout duration of a port corresponding to the destination port information to bezero; traversing ports of the network equipment according to a first preset period, and determining whether the timeout duration of the ports exceeds a preset duration threshold; and if the timeout duration of the first port exceeds the preset duration threshold, determining a link fault corresponding to the first port. According to the method of the invention, rapid detection of the fault link can be realized without depending on an acknowledgement message, the process is simple, and the message interaction amount is reduced.